Kant s Categorical Imperative Essay - 1454 Words

In this paper, I will explain the concept of Kant’s Categorical Imperative, and show how he used it to justify why it is wrong to lie to an inquiring murderer. I will note how he arrived at this conclusion, and why I consider it to be the correct moral answer. According to Kant, the Categorical Imperative is the supreme law of morality by which a particular rule that an individual takes as a maxim must be accepted by all rational beings. This universal acceptance is what judges an action to be always good, provided that the agent’s impartiality and independence are maintained over self interest. Therefore, the Categorical Imperative is the only valid criterion by which to decide whether an action is permissible. It is an unconditional and absolute obligation (duty), which even desire (inclination) cannot override. Duty derives from reason, which only humans possess, and thus they are the only beings capable of judging right from wrong. Kant’s Categorical Imperative is a pure a priori form, that is, one that is based on theoretical as opposed to empirical deduction. It is a rational, voluntary choice derived from finality, instead of causality, where interests are put aside and moral duty is enforced. Take, for example, the challenge Benjamin Constant presented to the Categorical Imperative in the journal France for 1797, Part VI, No. 1, pages 123 124, in which he affirmed that Kant would not lie to a murderer if the latter asks you whether your friend, whom he isShow MoreRelatedKant s Categorical Imperative Essay1246 Words   |  5 Pagesutilitarianism, Kant was more focused on intent and action itself. This leads into one of Kantian ethics main ideals; you mustn’t treat another human being as a means to an end. Kant’s Categorical Imperative (CI) is a deontological theory, which relied heavily on his belief that humans are all capable of reason in the same manner, on the same level (A Brief Summary of Kant s Categorical Imperative, 2012). Kant recognized 2 kinds of moral ‘imperatives’, a hypothetical imperative (what must be doneRead MoreKant s Categorical Imperative Essay1190 Words   |  5 PagesIn section I of Immanuel Kant’s categorical im perative, Kant argues that every human being alive is subject to the categorical imperative. Kant came to this conclusion by arguing that the only thing that is good without needing qualification is a good will. Throughout this paper I will discuss Kant’s good will and his three propositions. A good will is an act done from duty and motivated by respect. If a person manifests a good will in action, the respect for duty determines that I do the actionRead MoreKant s Categorical Imperative Essay2239 Words   |  9 PagesKant’s Categorical Imperative An imperative is the linguistic form of a ‘command of reason’. In section II of the Fundamental Principles of the Metaphysics of Morals, German philosopher Immanuel Kant writes, â€Å"the conception of an objective principle, in so far as it is obligatory for a will, is called a command (of reason), and the formula of the command is called an imperative.† It is a rule telling us what we ought to do. He distinguishes between two types of imperatives: hypothetical and categoricalRead MoreKant s Categorical Imperative Essay1448 Words   |  6 PagesKant’s categorical imperative is a natural conclusion of reason when searching for a moral guideline that does not depend on previous expense but reason alone. The categorical imperative can be explained in many different ways. Kant offers five formulations in his work groundwork of the metaphysics of morals. The formulations of Kant’s categorical imperative can be considered a test. If your maxim passes th e test then your actions under that maxim will be good. The formulations that Kant offers,Read MoreKant s Categorical Imperative Essay983 Words   |  4 PagesImmanuel Kant is known for his absolute and idealistic approach to answering this question, with which he provides us a medium to answer it. Kant calls this his categorical imperative. Throughout this paper I will break down Kant’s view on ethics, explain one formulation of his categorical imperative, and evaluate his theory on an existential level. Kant was a firm believer that there are two different worlds. He called them the â€Å"World of Phenomena,† and the â€Å"World of the Noumena.† Kant describesRead MoreEssay about Kant ´s Theory: Categorical Imperative and its Rules827 Words   |  4 Pageswill benefit them at the end. The purpose of Kantianism is to tell us that morality is not to make us happy but the whole purpose is to do the right thing just for the sake of doing it. Eventually doing the right thing will lead us to our happiness. Kant said that we are determined to know what’s good or what’s bad through self- law and using ourselves as our own guidance’s. We as individuals will determine our own behavior than having someone telling us how we should act because of their expectationsRead MoreKant And The Moral Law1451 Words   |  6 PagesIntroduction: Kant argues that mere conformity with the moral law is not sufficient for moral goodness. I will argue that Kant is right. In this essay I will explain why Kant distinguishes between conforming with the moral law and acting for the sake of the moral law, and what that distinction means to Kant, before arguing why Kant was right. 2) Meaning of Kant’s Statement Why: According to Kant, we can control the will and meaning behind our actions. The morality of an action should be assessedRead MoreKant s Philosophy On Moral Philosophy Essay1519 Words   |  7 PagesAlthough Kant s philosophy, outlined in The Groundwork for the Metaphysics of Morals, has some value as a moral guide, it alone is not always sufficient. After analysing Kant s objective moral imperative, I will show that implementing his philosophy has the potential to permit what is considered to be immoral. This is due to its rigid conditions, which are formed on the basis that he believes in the existence of a perfect morality that always holds true. However, I will argue that there is notRead MoreKant And Mill On Animal Ethics Essay1365 Words   |  6 PagesIn this essay I will begin by explaining the overall views of Immanuel Kant and John Stuart Mill, then compare and contrast the ideas and philosophies of Kant and Mill on Animal Ethics. I believe that Kant, the deontologist, will not care as much about the duty/responsibility between humans and animals as Mill, the utilitarian, who will see the extreme importance of animal ethics. After studying and explaining the views and teachings of these two philosophers I will see if my thesis was correct,Read MoreThe Ones Who Walked Away from Omelas by Ursula Le Guin1424 Words   |  6 Pagesgreatest number of people. On the contrary, Kant would argue that using the child as a mere means is wrong and argue that the living conditions of the child are not universalizable. The citizens of Omelas must face this moral dilemma for all of their lives or instead choose to silently escape the city altogether. My central thesis is that Kant would give the child’s life inherent value and advocate that Omelas’ citizens abandon their practices. In this essay I aim to examine the story of Omelas through

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How Are Civil Liberties Better Protected Since 1997 Free Essays

To what extent have civil liberties become better protected since 1997 In comparison to countries such as France and the USA, the UK’s commitment to civil liberties was weak. During the US declaration of civil Independence the US made amendments to its constitution,; their bill of rights became largely made up of civil liberties, including the right to freedom of religion, speech etc. And the French Revolution led to the establishment of the Declaration of the Rights of Man and the Citizen (1789). We will write a custom essay sample on How Are Civil Liberties Better Protected Since 1997 or any similar topic only for you Order Now Whereas, the UK has traditionally been reluctant to give basic rights and freedoms explicit legal expression. Instead, it relied on the freedoms that were supposed to be embodied in the common Law belief that ‘everything is permitted that is not prohibited’. However, in recent years, the protection of civil liberties has increasingly fallen to the courts, due to the wider use of the power of judicial review and the introduction of the Human Rights Act. One of the roles of Judiciary is to ‘Defend Civil liberties’ though Judicial review, As one of the Human rights Act is Habeus corpus- the right to a fair trial. Judges can overrule government if they are going beyond Ulta-Vires, judges can decide that other political actors are acting beyond their proper power, in recent years, judges have been increasingly willing to use this power, particularly in relation to ministers, for example if police arrest you without given reason of arrest, they are acting beyond ultra-vires, because you have a right to be given a reason for arrest and can therefore take them to court. However, judges cannot overturn acts of Parliament because of Parliamentary sovereignty unlike in the USA, judges have very far-reaching powers of judicial review because of the existence of a codified constitution. If a law passed by congress goes against the constitution or the bill of rights – the Supreme Court can overrule that law. The Human Rights Act is a UK law passed in 1998. It means that you can defend your rights in the UK courts and that public organisations (including the Government, the Police and local councils) must treat everyone equally, with fairness, dignity and respect. ——————————————– [ 1 ]. Andrew Heywood – Essentials Of Politics- ’Protecting civil Liberties’ Pp. 287 How to cite How Are Civil Liberties Better Protected Since 1997, Essay examples

The aim of this research is, eventually, to Essay Example

The aim of this research is, eventually, to Essay Context of the intended research CRIT is a receptor that was foremost encountered on the surface of aSchistosomaspecies ; in theSchistosoma,it acts as a decoy C2-binding receptor in order to protect this parasite from complement onslaught by viing with C4 for the binding of C2 ( Inal and Schifferli, 2002 ) . Complement is, basically, an enzyme system that is triggered upon immune system onslaught: most of the enzymes in this system are identified through standardised labeling: they are labelled C followed by a figure and so a codification based on the cleavage merchandises when proteolysed, for illustration, C5b-9. Complement onslaught ( Carroll, 1998 ) plays a major function in supporting hosts from immune onslaught, in footings of extinguishing foreign encroachers, and involves a complex tract of interactions, in order that the procedure does non take to self devastation: so, unregulated complement action can take to autoimmune diseases ( Ohet al. ,2003 ) , and other conditions/diseases such as bosom onslaught ( K ilgoreet al. ,1994 ) , Alzheimer’s disease ( Bradtet al. ,1998 ) . We will write a custom essay sample on The aim of this research is, eventually, to specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on The aim of this research is, eventually, to specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on The aim of this research is, eventually, to specifically for you FOR ONLY $16.38 $13.9/page Hire Writer CRIT ( or Sh-TOR as it was antecedently known ) was found inSchistosoma,as a complement C2 protein, that could barricade complement activation, therefore bring oning bilharzia in worlds ; it was hypothesized that the CRIT blocked complement activation through its C2 binding site ; CRIT look in the parasite therefore acts as a steerer C2 binding receptor, protecting the parasite against complement onslaught by viing with C4 for the binding of C2, at the ed1 sphere ( Hui, 2005 ) . CRIT has later been found that other animate beings, that are suited as theoretical account systems for analyzing CRIT action besides express CRIT, for illustration, the rat andTrypanosoma.Recent work has besides shown that worlds have a CRIT factor, labeled ( Hu ) -CRIT which is expressed in a broad scope of human cells, particularly in hematopoietic cells ( Inalet al. ,2005 ) . Further elaborate surveies of CRIT have shown that it is a transmembrane receptor with two extracellular and two in intracellular spheres with an active 11 amino-acid peptide subdivision ( called CRIT-H17 ) which is hypothesized to be involved in the complement suppression activity of CRIT ( Hui, 2005 ) . Much work has been undertaken on clarifying the mechanism of action of CRIT, in footings of it being a potentially utile molecule in handling immunological diseases and other diseases, such as malignant neoplastic disease. For illustration, Inalet Al.( 2005 ) have shown that CRIT barricading can take to deprotection in CRIT-expressing human myeloid cell lines and in monocytes, ensuing in a greater susceptibleness to complement-mediated lysisin vitro. Other research, such as that by Mollet Al.( 2006 ) has shown that CRIT look is different in patients with kidney upsets, through assorted alterations in up- or down-regulation of CRIT look, taking to the suggestion that the upregulation of CRIT in activated podocytes might stand for a self-defense mechanism, stand foring a ‘last line’ of defense mechanism in membranous kidney disease of the kidney. Other surveies have looked at the existent mechanism of operation of the CRIT tract, for illustration Huiet Al.( 2005 ) looked at the look of a functional recombinant von Willebrand factor-A sphere from human complement C2, in footings of this being a possible binding site for C4 and CRIT. As we have seen, CRIT competes with C4b for the binding of C2, with the major adhering site on C2 being located on a short peptide sequence that was antecedently of unknown beginning ; Huiet al. ,( 2005 ) , nevertheless, looked at a part on C2 that was known to hold binding capacity, the von Willebrand Factor-A, and found that, so, this peptide sequence inhibits complement activity ; utilizing a cloned von Willebrand Factor-A sequence, Huiet Al.( 2005 ) were able to look in item at the interactions between C2 and CRIT and C4b. This pilot survey that is intended to be undertaken as portion of this reappraisal of CRIT is intended to take this work of Huiet Al.( 2005 ) farther. As will be seen, on adh ering the serum complement protein, C2, the CRIT peptide, H17 can cut down complement-mediated redness in vivo [ 7 ] and it is intended that CRIT-ed1 and H17 will be tested as possible distinction therapeutics peculiarly aiming monocytic leukemia. To better the efficaciousness of these peptides, structural information on the manner they interact with C2, such that this can be ‘tweaked’ to increase efficiency of binding. The CRIT-H17 peptide will be synthesized full length as an 11-mer, but besides as a 10-mer, 9-mer and 8-mer. We will besides mutate to alanine the amino acids believed to interact with the vWFA sphere of C2. CRIT-H17 will farther be synthesized as a head-to-toe cyclised version of H17 ( to mime the native CRIT molecule ) . Prior to the structural surveies, nevertheless, these peptides will be tested for their efficaciousness at cut downing complement activationin vitro. In add-on, interactions of these peptides with C2 vWFA sphere will be monitored for by a novel technique utilizing electrospray ionization mass spectroscopy ( developed within the Institute for Health Research A ; Policy at LMU by Dr. A. Bligh ) [ 8 ] . This technique can besides observe the presence of two adhering sites and if there are two ligands whether they bind competitively and with what affinity. To supervise conformational alterations on interaction, in add-on to working out dynamicss of interaction, we will utilize Double Polarisation Interferometry ( AnaLight Quantum ) through coaction with Dr. R.B. Sim ( MRC Immunochemistry Unit, Univ. of Oxford ) . Prof. Peter Gros ( Centre for Biomolecular Research, Utrecht ) has approached the applier for CRIT peptides for co-crystallisation with an available C2a ( von Willebrand Factor A [ vWFA ] and serine peptidase ) concept and we expect this coaction to continue and to finally demo the points of contact between CRIT-ed1 and C2 ( via the vWFA sphere ) . It is hoped that this methodological analysis will let a deeper apprehension of how CRIT binds with other molecules in the complement tract, and how this tract is regulated in footings of supplying a intervention option for some of the diseases/conditions that are known to develop following perturbation, or irregular operation of, this complement tract. Introduction The purpose of this research is, finally, to transport out a pilot survey to back up preliminary grounds that the complement receptor CRIT ( Complement C2 Receptor Inhibitor Trispanning ) plays a function in monocyte/macrophage terminal distinction. We aim to demo that by triping distinction through CRIT, it is possible to suppress the proliferation of myeloid leukemia cells. This could hold of import deductions for an alternate intervention agenda for monocytic leukemia. By the terminal of this survey we expect to demo the undermentioned: I ) that monocytes which can adhere C2 through CRIT maintain monocytic phenotypein vitroorin vivo ;II ) that monocytes can be induced to terminally distinguish by barricading the interaction of CRIT with its blood relation ligand, complement C2 or as monocytes move into an extravascular environment devoid of C2 ; that a knockdown of CRIT look in monocyte carcinoma cell lines or physical blocking of CRIT-C2 interaction induces them to terminally dis tinguish, and that, likewise, a blocking of CRIT-C2 interaction on leukaemic monocytes will halt proliferation and bring on distinction ; and, in conclusion, that, conversely, monocytes that are C2-/- , can non be induced to terminally distinguish by barricading the interaction of CRIT with its ligand, C2, nevertheless on traveling into an extravascular environment, other excess mechanisms, such as interaction of monocyte integrins with VCAM molecules on endothelial cells, may still bring on distinction. In consequence, basically, either barricading ligand interaction with CRIT or cut downing CRIT look should excite cell rhythm apprehension ( irreversible block at G1 ) and terminal distinction into cells with a macrophage phenotype. These conditions represent a fresh tract for monocyte/macrophage terminal distinction, based on the theoretical account proposed, and affecting the complement receptor, CRIT. In footings of monocyte leukemia, besides advancing cell rhythm apprehension, barricading CRIT with anti-CRIT-ed1 has the added benefit of rendering the cell more susceptible to complement-mediated cytolysis, as described antecedently for monocyte carcinoma cell lines ( U937 and THP-1 ) and primary monocytes showing CRIT [ 1 ] . It is intended that this research will lend to a deeper apprehension of how the complement tract works in worlds, in peculiar with respect to how abnormalities in the operation of the complement tract can do disease, and how CRIT look modulates the operation of the complement tract in human systems. The informations obtained from this pilot survey will be used to look into five chief issues: I ) The function of CRIT in myeloid distinction The function of CRIT in myeloid distinction has been studied with an antagonist CRIT-based peptide termed H17 ( NH2-HEVKIKHFSPY-CO2H ) consisting the 11aa C-terminus of CRIT-ed1. Preliminary work suggests that in adhering to C2 and therefore barricading the interaction of C2 with CRIT [ 1 ] , H17 may bring on the distinction of monocytes/promonocytic cell lines along the tract of macrophage distinction, and significantly, inhibit cell proliferation. The different curative attacks that are presently used in handling acute leukemia include cytotoxicity, programmed cell death and distinction. Differentiation therapy was developed over a decennary ago and Acts of the Apostless by bring oning cell rhythm apprehension and hence distinction in leukaemic monocytes [ 2 ] , therefore elegantly avoiding cytotoxicity effects. Retinoids, such as all-trans-retinoic acid ( ATRA ) are used to handle promyelocytic leukemia by specifically aiming neoplastic cells whilst non impacting normal mature ce lls. Many successes in the intervention of monocytic leukaemias have been reported since [ 3-5 ] . We suggest that a CRIT-based peptide ( H17 or an H17 derived function ) could finally offer an of import alternate intervention for monocytic leukemia by bring oning distinction of monocytic cells. The peptide will be tested entirely and in combination with ATRA in a mouse theoretical account of acute promyelocytic leukemia [ 6 ] . two ) The construction of CRIT peptides ( ed1 and H17 ) and of CRIT peptides interacting with the von Willebrand Factor A ( vWFA ) sphere of complement C2 On adhering the serum complement protein, C2, the CRIT peptide, H17 can cut down complement-mediated redness in vivo [ 7 ] and we will prove CRIT-ed1 and H17 as possible distinction therapeutics peculiarly aiming monocytic leukemia. To better the efficaciousness of these peptides, we aim to utilize structural information on the manner they interact with C2. The CRIT-H17 peptide will be synthesized full length as an 11-mer, but besides as a 10-mer, 9-mer and 8-mer. We will besides mutate to alanine the amino acids believed to interact with the vWFA sphere of C2. CRIT-H17 will farther be synthesized as a head-to-toe cyclised version of H17 ( to mime the native CRIT molecule ) . Prior to structural surveies, these peptides will be tested for their efficaciousness at cut downing complement activation in vitro. Interactions of these peptides with C2 vWFA sphere will be monitored for by a novel technique utilizing electrospray ionization mass spectroscopy ( developed within the Institute for Health Research A ; Policy at LMU by Dr. A. Bligh ) [ 8 ] . This technique can besides observe the presence of two adhering sites and if there are two ligands whether they bind competitively and with what affinity. To supervise conformational alterations on interaction, in add-on to working out dynamicss of interaction, we will utilize Double Polarisation Interferometry ( AnaLight Quantum ) through coaction with Dr. R.B. Sim ( MRC Immunochemistry Unit, Univ. of Oxford ) . Prof. Peter Gros ( Centre for Biomolecular Research, Utrecht ) has approached the applier for CRIT peptides for co-crystallisation with an available C2a ( von Willebrand Factor A [ vWFA ] and serine peptidase ) concept and we expect this coaction to continue and to finally demo the points of contact between CRIT-ed1 and C2 ( via the vWFA sphere ) . three ) Expression profile of CRIT in autoimmune disease and malignant neoplastic disease With a position to understanding the function of CRIT in autoimmune disease and malignant neoplastic disease, the applier is join forcesing on a Swiss National Foundation funded undertaking with Prof. J. Schifferli ( Univ. Hospital Basel ) to do a CRIT smasher mouse. To happen an association between CRIT look degrees and the disease procedure, a comparing of CRIT look ( messenger RNA and protein ) in normal tissue with that in autoimmune disease and malignant neoplastic disease will be made. In situ hybridization surveies every bit good as immunohistochemistry, utilizing dual staining and/or staining of consecutive subdivisions with anti-CRIT and cell specific markers, will be conducted to corroborate look in sertoli cells, podocyte cells, keratinocytes, encephalon [ 1 ] . The distribution of CRIT in normal and morbid tissue will be studied, peculiarly tissues injured by inflammatory or necrotic procedures: joints-synovium in arthritis, myocardial infarction etc. Previously, we carri ed out a survey along these lines, which looked at CRIT look in assorted kidney diseases [ 9 ] . This survey revealed CRIT upregulation in membranous kidney diseases on glomerular podocyte cells. Unlike CR1, hitherto the lone other complement regulator described on podocytes, and which is non upregulated in membranous nephropathy, we believe that CRIT on podocytes represents a last line of defense mechanism against onslaught by complement. Functional information back uping this was later obtained ( manuscript in Complement regulators are frequently upregulated in malignant neoplastic disease [ 10 ] and so expression degrees of CRIT in assorted human malignances will be assessed excessively. Critically, CRIT is upregulated in liver malignant neoplastic disease ( Fig. 4 ) and thyroid malignant neoplastic disease ( non shown ) . As obstruction of CRIT with antibody sensitises cells to complement lysis [ 1 ] , such findings may hold applications in malignant neoplastic disease. Already schemes to barricade complement regulators with specific antibodies have been used successfully with a position to developing fresh malignant neoplastic disease immunotherapies [ 11,12 ] . In a recent development, membrane-bound complement regulative proteins ( mCRP ) have been downregulated by siRNA to render tumour cells sensitive to complement [ 13 ] . Therefore we will bring forth vector-based shRNAs ( utilizing psiRNA vector [ In vivo Gen ] ) to stably strike hard down CRIT look and see the consequence on tumor cells. four ) CRIT extracellular peptide ( H17 ) and its usage in modulating complement-mediated redness in in vivo theoretical accounts of autoimmune disease With a position to therapeutically suppress redness due to classical tract activation in theoretical accounts of complement-mediated autoimmune disease, CRIT has been targeted to suppress the Reversed Passive Arthus Reaction in mice [ 7 ] . By disposal of an counter peptide, H17, which binds complement C2 and prevents its activation it was possible to significantly cut down complement-mediated redness. To prove this peptide as a curative against autoimmune diseases in which the classical tract is peculiarly of import we are join forcesing with labs that have the appropriate animate being theoretical accounts. Experimental autoimmune myasthenia gravis ( EAMG ) is an antibody-mediated autoimmune disease impacting the neuromuscular junction. The disease, which is besides T cell-dependent, is an accurate theoretical account in footings of its pathology and clinical result of human myasthenia gravis ( MG ) . We have been approached by Prof. P. Christadoss and Dr. E. Tuzun of the Universit y of Texas, Galveston to prove H17 in their mouse theoretical account of MG [ 14,15 ] and will continue with this coaction. 1.2.5 Does CRIT adhere other serum proteins through its extracellular spheres? In a collaborative survey with Prof. Marina Botto ( Imperial College ) we will look into whether CRIT is a receptor for any other proteins beside complement C2 and FB, with which it binds with high and low affinity, severally. To prove whether the extracellular spheres of CRIT have other adhering spouses, receptor affinity chromatography [ 16 ] will be used to see whether ed1 binds other proteins from the serum of a C2 deficient ( C2D ) patient or of a combined C2/FB smasher mouse [ 17,18 ] . As the function of the 2nd extracellular sphere, ed2 has non been established, normal serum will be used ab initio to place ed2-binding proteins adhering to ed2 affinity columns by standard mass-spec designation protocols. Further experiments will be conducted to see if CRIT binds integrins. The principle for this is that CRIT-ed1 binds the vWFA1 sphere of complement C2 [ 19 ] and vWFA spheres are typically found in integrins, such as Very Late Antigen 4 ( VLA-4 ) on monocytes. The interaction w ith vascular cell adhesion molecule-1 ( VCAM-1 ) molecules on the endothelium is believed to non merely intercede attachment [ 20 ] and transendothelial migration [ 21 ] but besides to excite distinction [ 22 ] . Methodology to be utilized in the survey of the purposes of the undertaking: I ) The function of CRIT in myeloid distinction As we have seen, the function of CRIT in myeloid distinction has been studied with an antagonist CRIT-based peptide termed H17 ( NH2-HEVKIKHFSPY-CO2H ) consisting the 11aa C-terminus of CRIT-ed1. Preliminary work suggests that in adhering to C2 and therefore barricading the interaction of C2 with CRIT [ 1 ] , H17 may bring on the distinction of monocytes/promonocytic cell lines along the tract of macrophage distinction, and significantly, inhibit cell proliferation. It is intended that this pilot survey will go on the work that has been started in this respect, and will lend original research findings to the intervention of diseases that are caused by failures in the proper operation of the complement tract in worlds. The different curative attacks that are presently used in handling acute leukemia include cytotoxicity, programmed cell death and distinction. Differentiation therapy was developed over a decennary ago and Acts of the Apostless by bring oning cell rhythm apprehension and hence distinction in leukaemic monocytes [ 2 ] , therefore elegantly avoiding cytotoxicity effects. Retinoids, such as all-trans-retinoic acid ( ATRA ) are used to handle promyelocytic leukemia by specifically aiming neoplastic cells whilst non impacting normal mature cells. Many successes in the intervention of monocytic leukaemias have been reported since [ 3-5 ] . We suggest that a CRIT-based peptide ( H17 or an H17 derived function ) could finally offer an of import alternate intervention for monocytic leukemia by bring oning distinction of monocytic cells. The peptide will be tested entirely and in combination with ATRA in a mouse theoretical account of acute promyelocytic leukemia [ 6 ] . This will take to cons equences which could be of great usage in developing alternate therapies for handling conditions that arise as a consequence of failure of the right operation of the complement tract in worlds. two ) The construction of CRIT peptides ( ed1 and H17 ) and of CRIT peptides interacting with the von Willebrand Factor A ( vWFA ) sphere of complement C2 As has been seen, Huiet Al.( 2005 ) looked at the look of a functional recombinant von Willebrand factor-A sphere from human complement C2, in footings of this being a possible binding site for C4 and CRIT. As we have seen, CRIT competes with C4b for the binding of C2, with the major adhering site on C2 being located on a short peptide sequence that was antecedently of unknown beginning ; Huiet al. ,( 2005 ) , nevertheless, looked at a part on C2 that was known to hold binding capacity, the von Willebrand Factor-A, and found that, so, this peptide sequence inhibits complement activity ; utilizing a cloned von Willebrand Factor-A sequence, Huiet Al.( 2005 ) were able to look in item at the interactions between C2 and CRIT and C4b. The current survey will take the work of Huiet Al.( 2005 ) further, by looking in item at the CRIT tract, in footings of adhering the serum complement protein, C2, the CRIT peptide, H17 can cut down complement-mediated rednessin vivo[ 7 ] and we will prove CRIT-ed1 and H17 as possible distinction therapeutics peculiarly aiming monocytic leukemia. To better the efficaciousness of these peptides, we aim to utilize structural information on the manner they interact with C2. The CRIT-H17 peptide will be synthesized full length as an 11-mer, but besides as a 10-mer, 9-mer and 8-mer. We will besides mutate to alanine the amino acids believed to interact with the vWFA sphere of C2. CRIT-H17 will farther be synthesized as a head-to-toe cyclised version of H17 ( to mime the native CRIT molecule ) . Prior to structural surveies, these peptides will be tested for their efficaciousness at cut downing complement activation in vitro. Interactions of these peptides with C2 vWFA sphere will be moni tored for by a novel technique utilizing electrospray ionization mass spectroscopy ( developed within the Institute for Health Research A ; Policy at LMU by Dr. A. Bligh ) [ 8 ] . This technique can besides observe the presence of two adhering sites and if there are two ligands whether they bind competitively and with what affinity. To supervise conformational alterations on interaction, in add-on to working out dynamicss of interaction, we will utilize Double Polarisation Interferometry ( AnaLight Quantum ) through coaction with Dr. R.B. Sim ( MRC Immunochemistry Unit, Univ. of Oxford ) . Prof. Peter Gros ( Centre for Biomolecular Research, Utrecht ) has approached the applier for CRIT peptides for co-crystallisation with an available C2a ( von Willebrand Factor A [ vWFA ] and serine peptidase ) concept and we expect this coaction to continue and to finally demo the points of contact between CRIT-ed1 and C2 ( via the vWFA sphere ) . three ) Expression profile of CRIT in autoimmune disease and malignant neoplastic disease With a position to understanding the function of CRIT in autoimmune disease and malignant neoplastic disease, the applier is join forcesing on a Swiss National Foundation funded undertaking with Prof. J. Schifferli ( Univ. Hospital Basel ) to do a CRIT smasher mouse. To happen an association between CRIT look degrees and the disease procedure, a comparing of CRIT look ( messenger RNA and protein ) in normal tissue with that in autoimmune disease and malignant neoplastic disease will be made. In situ hybridization surveies every bit good as immunohistochemistry, utilizing dual staining and/or staining of consecutive subdivisions with anti-CRIT and cell specific markers, will be conducted to corroborate look in sertoli cells, podocyte cells, keratinocytes, encephalon [ 1 ] . The distribution of CRIT in normal and morbid tissue will be studied, peculiarly tissues injured by inflammatory or necrotic procedures: joints-synovium in arthritis, myocardial infarction etc. Previously, we carri ed out a survey along these lines, which looked at CRIT look in assorted kidney diseases [ 9 ] . This survey revealed CRIT upregulation in membranous kidney diseases on glomerular podocyte cells. Unlike CR1, hitherto the lone other complement regulator described on podocytes, and which is non upregulated in membranous nephropathy, we believe that CRIT on podocytes represents a last line of defense mechanism against onslaught by complement. Functional information back uping this was later obtained ( manuscript in Complement regulators are frequently upregulated in malignant neoplastic disease [ 10 ] and so expression degrees of CRIT in assorted human malignances will be assessed excessively. Critically, CRIT is upregulated in liver malignant neoplastic disease ( Fig. 4 ) and thyroid malignant neoplastic disease ( non shown ) . As obstruction of CRIT with antibody sensitises cells to complement lysis [ 1 ] , such findings may hold applications in malignant neoplastic disease. Already schemes to barricade complement regulators with specific antibodies have been used successfully with a position to developing fresh malignant neoplastic disease immunotherapies [ 11,12 ] . In a recent development, membrane-bound complement regulative proteins ( mCRP ) have been downregulated by siRNA to render tumour cells sensitive to complement [ 13 ] . Therefore we will bring forth vector-based shRNAs ( utilizing psiRNA vector [ In vivo Gen ] ) to stably strike hard down CRIT look and see the consequence on tumor cells. four ) CRIT extracellular peptide ( H17 ) and its usage in modulating complement-mediated redness in in vivo theoretical accounts of autoimmune disease With a position to therapeutically suppress redness due to classical tract activation in theoretical accounts of complement-mediated autoimmune disease, CRIT has been targeted to suppress the Reversed Passive Arthus Reaction in mice [ 7 ] . By disposal of an counter peptide, H17, which binds complement C2 and prevents its activation it was possible to significantly cut down complement-mediated redness. To prove this peptide as a curative against autoimmune diseases in which the classical tract is peculiarly of import we are join forcesing with labs that have the appropriate animate being theoretical accounts. Experimental autoimmune myasthenia gravis ( EAMG ) is an antibody-mediated autoimmune disease impacting the neuromuscular junction. The disease, which is besides T cell-dependent, is an accurate theoretical account in footings of its pathology and clinical result of human myasthenia gravis ( MG ) . We have been approached by Prof. P. Christadoss and Dr. E. Tuzun of the Universit y of Texas, Galveston to prove H17 in their mouse theoretical account of MG [ 14,15 ] and will continue with this coaction. 1.2.5 Does CRIT adhere other serum proteins through its extracellular spheres? In a collaborative survey with Prof. Marina Botto ( Imperial College ) we will look into whether CRIT is a receptor for any other proteins beside complement C2 and FB, with which it binds with high and low affinity, severally. To prove whether the extracellular spheres of CRIT have other adhering spouses, receptor affinity chromatography [ 16 ] will be used to see whether ed1 binds other proteins from the serum of a C2 deficient ( C2D ) patient or of a combined C2/FB smasher mouse [ 17,18 ] . As the function of the 2nd extracellular sphere, ed2 has non been established, normal serum will be used ab initio to place ed2-binding proteins adhering to ed2 affinity columns by standard mass-spec designation protocols. Further experiments will be conducted to see if CRIT binds integrins. The principle for this is that CRIT-ed1 binds the vWFA1 sphere of complement C2 [ 19 ] and vWFA spheres are typically found in integrins, such as Very Late Antigen 4 ( VLA-4 ) on monocytes. The interaction w ith vascular cell adhesion molecule-1 ( VCAM-1 ) molecules on the endothelium is believed to non merely intercede attachment [ 20 ] and transendothelial migration [ 21 ] but besides to excite distinction [ 22 ] . CRIT is a receptor that was foremost encountered on the surface of aSchistosomaspecies ; in theSchistosoma,it acts as a decoy C2-binding receptor in order to protect this parasite from complement onslaught by viing with C4 for the binding of C2 ( Inal and Schifferli, 2002 ) . Complement is, basically, an enzyme system that is triggered upon immune system onslaught: most of the enzymes in this system are identified through standardised labeling: they are labelled C followed by a figure and so a codification based on the cleavage merchandises when proteolysed, for illustration, C5b-9. Complement onslaught ( Carroll, 1998 ) plays a major function in supporting hosts from immune onslaught, in footings of extinguishing foreign encroachers, and involves a complex tract of interactions, in order that the procedure does non take to self devastation: so, unregulated complement action can take to autoimmune diseases ( Ohet al. ,2003 ) , and other conditions/diseases such as bosom onslaught ( K ilgoreet al. ,1994 ) , Alzheimer’s disease ( Bradtet al. ,1998 ) . CRIT ( or Sh-TOR as it was antecedently known ) was found inSchistosoma,as a complement C2 protein, that could barricade complement activation, therefore bring oning bilharzia in worlds ; it was hypothesized that the CRIT blocked complement activation through its C2 binding site ; CRIT look in the parasite therefore acts as a steerer C2 binding receptor, protecting the parasite against complement onslaught by viing with C4 for the binding of C2, at the ed1 sphere ( Hui, 2005 ) . CRIT has later been found that other animate beings, that are suited as theoretical account systems for analyzing CRIT action besides express CRIT, for illustration, the rat andTrypanosoma.Recent work has besides shown that worlds have a CRIT factor, labeled ( Hu ) -CRIT which is expressed in a broad scope of human cells, particularly in hematopoietic cells ( Inalet al. ,2005 ) . Further elaborate surveies of CRIT have shown that it is a transmembrane receptor with two extracellular and two in intracellular spheres with an active 11 amino-acid peptide subdivision ( called CRIT-H17 ) which is hypothesized to be involved in the complement suppression activity of CRIT ( Hui, 2005 ) . Much work has been undertaken on clarifying the mechanism of action of CRIT, in footings of it being a potentially utile molecule in handling immunological diseases and other diseases, such as malignant neoplastic disease. For illustration, Inalet Al.( 2005 ) have shown that CRIT barricading can take to deprotection in CRIT-expressing human myeloid cell lines and in monocytes, ensuing in a greater susceptibleness to complement-mediated lysisin vitro. Other research, such as that by Mollet Al.( 2006 ) has shown that CRIT look is different in patients with kidney upsets, through assorted alterations in up- or down-regulation of CRIT look, taking to the suggestion that the upregulation of CRIT in activated podocytes might stand for a self-defense mechanism, stand foring a ‘last line’ of defense mechanism in membranous kidney disease of the kidney. Introduction The purpose of this research is, finally, to transport out a pilot survey to back up preliminary grounds that the complement receptor CRIT ( Complement C2 Receptor Inhibitor Trispanning ) plays a function in monocyte/macrophage terminal distinction. We aim to demo that by triping distinction through CRIT, it is possible to suppress the proliferation of myeloid leukemia cells. This could hold of import deductions for an alternate intervention agenda for monocytic leukemia. By the terminal of this survey we expect to demo the undermentioned: I ) that monocytes which can adhere C2 through CRIT maintain monocytic phenotypein vitroorin vivo ;II ) that monocytes can be induced to terminally distinguish by barricading the interaction of CRIT with its blood relation ligand, complement C2 or as monocytes move into an extravascular environment devoid of C2 ; that a knockdown of CRIT look in monocyte carcinoma cell lines or physical blocking of CRIT-C2 interaction induces them to terminally dis tinguish, and that, likewise, a blocking of CRIT-C2 interaction on leukaemic monocytes will halt proliferation and bring on distinction ; and, in conclusion, that, conversely, monocytes that are C2-/- , can non be induced to terminally distinguish by barricading the interaction of CRIT with its ligand, C2, nevertheless on traveling into an extravascular environment, other excess mechanisms, such as interaction of monocyte integrins with VCAM molecules on endothelial cells, may still bring on distinction. In consequence, basically, either barricading ligand interaction with CRIT or cut downing CRIT look should excite cell rhythm apprehension ( irreversible block at G1 ) and terminal distinction into cells with a macrophage phenotype. These conditions represent a fresh tract for monocyte/macrophage terminal distinction, based on the theoretical account proposed, and affecting the complement receptor, CRIT. In footings of monocyte leukemia, besides advancing cell rhythm apprehension, barricading CRIT with anti-CRIT-ed1 has the added benefit of rendering the cell more susceptible to complement-mediated cytolysis, as described antecedently for monocyte carcinoma cell lines ( U937 and THP-1 ) and primary monocytes showing CRIT [ 1 ] . Bradt, B.M.et al. ,1998. Complement-dependent proinflammatory belongingss of the Alzheimer’s disease B-peptide.J. Exp. Med.188, pp.431. Carroll, M.C. , 1998. The function of complement and complement receptors in initiation and ordinance of unsusceptibility.Ann Rev Immun16,pp.545-568. Hui, K-M. , 2005. Biochemical and functional surveies of a fresh complement inhibitor, CRIT, with its interaction spouses. Dissertation submitted to the University of Basel, 2005. Hui, K-M.et al. ,2005. Expression of functional recombinant von Willebrand factor-A sphere from human complement C2: a possible binding site for C4 and CRIT.Biochem J.389, pp.863-868. Inal, J.M. , 2005. Complement C2 receptor inhibitor trispanning: from adult male to schistosome.Springer Seminars in Immunology27 ( 3 ), pp.320-331. Inal, J.M.et al. ,2005. Complement C2 receptor inhibitor trispanning: a fresh human complement inhibitory receptor.Journal of Immunology74, pp.356-366. Inal, J.M. and Schifferli, J.A. , 2002. Complement C2 receptor inhibitor trispanning and the B-chain of C4 portion a binding site for complement C2.Journal of Immunology168, pp.5213-5221. Kilgore, K.S.et al. ,1994. The complement system in myocardial ischaemia/reperfusion hurt.Cardiovasc Research28, pp.437. Makrides, S.C.et al. ,1992. Cell surface look of the C3b/C4b receptor ( CR1 ) protects the hamster ovary cells from lysis by human complement.J.Biol.Chem.34, pp.24754-24761. Moll, S.et al. ,2006. CRIT is expressed on podocytes in normal human kidney and upregulated in membranous kidney disease.Kidney International69,pp.1961-1968. Oh, K-S.et al. ,2003. Inhibition of complement activation by recombinant Sh-CRIT-ed1 parallels.Immunology110, pp.73-79.

Representations of Australia and its Soldiers essays

Representations of Australia and its Soldiers essays Different people think differently of Australia and its soldiers in the First World War. They have been depicted differently by many sources. It is obvious that there is a general opinion that the Australian soldiers at Gallipoli were eager, determined and very brave. But some have described them in a very different way. In the film Gallipoli, the character of Archy is seen to be a determined and brave young man who lost his life in what seemed a useless attack on the Turks. Frank is a cautious and sometimes bad tempered man who is also very brave and had to run through places where snipers could easily get him. He doesnt die but did a lot to help the Australians. These two, though, also had some bad points. They scratched their names on the pyramids, Frank started to argue with a shopkeeper and Archy shouldnt have been at the war at all because he was underage. In a book called Australia and the Great War, one extract says that Australians were riotous, undisciplined, loutish and disobedient. They supposedly had wild donkey ides, riots in Brothels, threw drivers off trams, scratched their names on the pyramids and had fights with shop owners. In a newspaper article, Australian soldiers are said to have made an inspiring scene in which to make her European debut as a fighting unit of the Empire. They say that after already doing this they should get all the Australians back home. In Gallipoli, once again, you get the idea that it was the Britishs fault for the loss of so many lives in Gallipoli. The British were said to be drinking tea when the Australians were fighting. The officer who order the continuation of the assault at The Nek has a British accent in the movie when he was actually Australian. This shows that many people think that in was the British who killed the Australians. Most sources tell of Australia as a country with a red, barren and harsh environment. Most people then onl...

A Guide to Vertebrates and Invertebrates

A Guide to Vertebrates and Invertebrates Animal classification is a matter of sorting out similarities and differences, of placing animals in groups and then breaking those groups apart into subgroups. The whole endeavor creates a structure- a hierarchy in which the large high-level groups sort out bold and obvious differences, while the low-level groups tease apart subtle, almost imperceptible, variations. This sorting process enables scientists to describe evolutionary relationships, identify shared traits, and highlight unique characteristics down through the various levels of animal groups and subgroups. Among the most basic criteria by which animals are sorted is whether or not they possess a backbone. This single trait places an animal into one of just two groups: the vertebrates or the invertebrates and represents a fundamental division among all animals alive today as well as those that have long ago disappeared. If we are to know anything about an animal, we should first aim to determine whether it is an invertebrate or a vertebrate. Well then be on our way to understanding its place within the animal world. What are Vertebrates? Vertebrates (Subphylum Vertebrata) are animals that possess an internal skeleton (endoskeleton) that includes a backbone made up of a column of vertebrae (Keeton, 1986:1150). The Subphylum Vertebrata is a group within the Phylum Chordata (commonly called the chordates) and as such inherits the characteristics of all chordates: bilateral symmetrybody segmentationendoskeleton (bony or cartilaginous)pharyngeal pouches (present during some stage of development)complete digestive systemventral heartclosed blood systemtail (at some stage of development) In addition to the traits listed above, vertebrates possess one additional trait that makes them unique among chordates: the presence of a backbone. There are a few groups of chordates that do not possess a backbone (these organisms are not vertebrates and are instead referred to as invertebrate chordates). The animal classes that are vertebrates include: Jawless fish (Class Agnatha)Armored fish (Class Placodermi) - extinctCartilaginous fish (Class Chondrichthyes)Bony fish (Class Osteichthyes)Amphibians (Class Amphibia)Reptiles (Class Reptilia)Birds (Class Aves)Mammals (Class Mammalia) What are Invertebrates? Invertebrates are a broad collection of animal groups (they do not belong to a single subphylum like the vertebrates) all of which lack a backbone. Some (not all) of the animal groups that are invertebrates include: Sponges (Phylum Porifera)Jellyfish, hydras, sea anemones, corals (Phylum Cnidaria)Comb jellies (Phylum Ctenophora)Flatworms (Phylum Platyhelminthes)Mollusks (Phylum Mollusca)Arthropods (Phylum Arthropoda)Segmented worms (Phylum Annelida)Echinoderms (Phylum Echinodermata) In total, there are at least 30 groups of invertebrates that scientists have identified to date. A vast proportion, 97 percent, of animal species alive today are invertebrates. The earliest of all animals to have evolved were invertebrates and the various forms that have developed during their long evolutionary past is highly diverse. All invertebrates are ectotherms, that is they do not produce their own body heat but instead acquire it from their environment.

Diffusion and Osmosis Lab Report Example | Topics and Well Written Essays - 2500 words

Diffusion and Osmosis - Lab Report Example The cell and its extracellular environments are fluid in that concentrations of substances dissolved in it vary. Depending on varying concentration of the substances dissolved in water, be it extracellular or intracellular, dissolved substances or water move from one compartment to another directed by physical principles of gradients. To accomplish this, the cell utilizes the processes of osmosis and diffusion as appropriate. These phenomena can be visualized outside the cell by simulating these in vitro. Since cell membrane is a semipermeable membrane and exchanges occur through this, these experiments must utilize a construct of the semipermeable membrane that can be made with a commercially available dialysis tubing and bag. These membranes have microscopic pores through which small molecules like water can pass, but larger molecules, such as sugar cannot pass through them. Thus through this molecular net, solutions of different solute concentrations can be observed to pass in a m easurable fashion. This experiment has been designed to prove the hypothesis of the mechanisms of osmosis and diffusion through such a semipermeable membrane. Diffusion is defined as the movement of molecules from a site of higher concentration to that of a lower concentration. Technically speaking, this difference in concentration creates a concentration gradient, and the steepness of the gradient determines the rate of diffusion. In an attempt to find out the reason as to why it occurs, it can be attributed to a great deal of space between the molecules of all substances that are candidates for diffusion. Liquids have moderate intermolecular space. Moreover, all molecules are in a state of constant random movement so that they collide and intermingle. It is expected that in solids diffusion would occur slowly for tight packing of the molecules. Liquids and gases would diffuse freely because their molecules are spaced widely. Thus, it can be stated that any solute will tend to uniformly occupy the entire space available to it. This movement, known as diffusion, is due to the spontaneous Brownian random movement that all molecules experie nce. The net result of diffusion is the movement of substances according to their difference in concentrations, from regions of high concentration to regions of low concentration. Diffusion is an effective way for substances to move short distances. Diffusion across a membrane has no preferential direction; it can occur from the outside of the cell toward the inside or from the inside of the cell toward the outside. It is however determined the extend of permeability through a membrane, which in the case of a living cell is the protein-lipid-protein plasma membrane, and therefore, diffusion across the membrane usually implies that the diffusing solute enters the lipid bilayer to cross it, the solute's solubility in a lipid solvent compared with its solubility in water is important in determining its permeability through it. Hydrophilic substances, such as ions and sugars, do not interact well with the lipid component of the membrane, hence would diffuse across the membrane more slow ly. This is, however, not applicable in physical membrane such as a dialysis membrane (Campbell NA, Reece JB, Mitchell LG., 1999). If equal volumes of pure water and a strong sugar solution are taken, the pure water will have more water molecules and would have higher water concentration that a sugar