|
| |
| | Immune system - Wikipedia, the free encyclopedia |
 | | Higher vertebrates and all mammals have both an innate and an adaptive immune system. | | | Despite high hopes, there are no medications that directly increase the activity of the immune system. | | | Adaptive immunity, in which the responses to pathogens change and develop during the lifetime of an individual, seems to have appeared somewhat abruptly in evolutionary time, with the appearance of chondrichthyes (cartilaginous or jawed fish). |
|
http://en.wikipedia.org/wiki/Immune_system
(2519 words)
|
|
| |
| | MichaelPangburn |
| | C5 convertase of the alternative pathway of complement Kinetic analysis of the free and surface-bound forms of the enzyme. | | | We are using the knowledge gained about complement to develop drugs to stop the system when an attack is misdirected at our own tissues. | | | The main focus of the lab is the alternative pathway of complement activation. |
|
http://www.uthct.edu/BIRE/Faculty/MichaelPangburn.htm
(1011 words)
|
|
| |
| | Evolving Immunity |
| | It is clear that the origins of the complement system lie within one of these two activation pathways, so their function and history should be focused upon. | | | With the addition of the ancestral Factor B, the positive feedback loop that would be the hallmark of the complement pathway was born. | | | Aside from his typical complaint that this system is "too complex to have evolved", Behe does little to actually specify what makes the complement pathway irreducibly complex, and does not give a list of essential components. |
|
http://www.talkdesign.org/faqs/Evolving_Immunity.html
(13609 words)
|
|
| |
| | Complement system - Wikipedia, the free encyclopedia |
| | Three biochemical pathways activate the complement system: the classical complement pathway, the alternate complement pathway, and the mannan-binding lectin pathway. | | | The three pathways all generate homologous variants of the protease C3-convertase. | | | It is thought that the complement system might play a role in many diseases with an immune component, such as Alzheimer's disease, asthma, lupus erythematosus, various forms of arthritis, autoimmune heart disease and multiple sclerosis. |
|
http://en.wikipedia.org/wiki/Complement_system
(787 words)
|
|
| |
| | eMedicine - Complement Deficiencies : Article by R Krishna Chaganti, MD |
| | New studies point to the complex interplay between the complement cascade and adaptive immune response, and complement is also being studied in association with ischemic injury as a target of therapy. | | | Although the complement system is part of the body's innate, relatively nonspecific defense against pathogens, its role is hardly primitive or easily understood. | | | Patients with complement deficiencies of the classic pathway are predisposed to develop immune complex diseases. |
|
http://www.emedicine.com/med/topic419.htm
(4116 words)
|
|
| |
| | lymph and immunity |
| | The immune system is more effective than the nonspecific methods, and has a memory component that improves response time when an invader of the same type (or species) is again encountered. | | | The immune system is able to distinguish self from non-self. | | | The immune system also generates specific responses to specific invaders. |
|
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookIMMUN.html
(2964 words)
|
|
| |
| | The Innate Immune System: The Complement System - The Lectin Pathway |
| | There are 3 complement pathways that make up the complement system: the classical complement pathway, the lectin pathway, and the alternative complement pathway. | | | The Innate Immune System: The Complement System - The Lectin Pathway | | | The MBP is equivalent to C1q in the classical complement pathway. |
|
http://www.cat.cc.md.us/courses/bio141/lecguide/unit2/innate/lectin.html
(616 words)
|
|
| |
| | Is the Complement System Irreducibly Complex? |
| | Both systems have the ability to distinguish self but the specific immune system is imperfect in this respect, resulting in autoimmunity. | | | The lectin, sometimes called the lytic, pathway and the alternative pathway are part of the innate immune response and are thus thought to be evolutionarily older than the classical pathway (see below). | | | Moreover, the complement system of the lamprey consists only of the alternative and lectin pathways |
|
http://www.talkorigins.org/faqs/behe/icsic.html
(2897 words)
|
|
| |
| | CIDRAP >> Protein that foils complement system may be key to smallpox virulence |
| | This difference may be an important reason for the virulence of smallpox and may offer an avenue for research on treatments, they suggest. | | | Thus, the disabling of SPICE could represent an approach to the treatment of smallpox. | | | Protein that foils complement system may be key to smallpox virulence |
|
http://www.cidrap.umn.edu/cidrap/content/bt/smallpox/news/smpprotein.html
(621 words)
|
|
| |
| | The complement system in HIV disease. |
| | Different aspects of the relationship between the HIV infection and the complement system were studied. | | | Keywords: Complement/*IMMUNOLOGY/METABOLISM Complement Activation Complement Pathway, Alternative Complement Pathway, Classical Complement 3/ANALYSIS Complement 4/ANALYSIS Enzyme-Linked Immunosorbent Assay Human HIV Infections/*IMMUNOLOGY/METABOLISM Properdin Factor B/ANALYSIS JOURNAL ARTICLE | | | Using sensitive ELISA assays, a significant increase was observed in the levels of protein-protein complexes which are formed at the activation of the classical (C1r-C1s-C1-INH) and alternative (C3b-Bb-P) pathways, indicating that both complement pathways are activated in the HIV disease. |
|
http://www.aegis.com/aidsline/1991/nov/M91B0633.html
(426 words)
|
|
| |
| | Introduction |
| | The complement system can be activated by two different pathways: the classical complement pathway and the alternative complement pathway. | | | The role of complement in inflammation and tissue injury has become apparent through clinical investigations and discoveries that the pathogenesis of certain experimental inflammatory diseases is complement-dependent. | | | The role of complement in host defence has been established through genetic deficiencies of certain complement components, which may result in life-threatening recurrent bacterial infections or immune complex diseases. |
|
http://www-micro.msb.le.ac.uk/MBChB/Merralls/Intro.html
(501 words)
|
|
| |
| | Complement |
| | The complement system can be activated via two distinct pathways; the classical pathway and the alternate pathway. | | | Because both the classical and alternate pathways depend upon C3b, regulation of the complement cascade is mediated via 3 proteins that affect the levels and activities of this component. | | | The complement system found in the blood of mammals is composed of heat labile substances (proteins) that combine with antibodies or cell surfaces. |
|
http://www.cehs.siu.edu/fix/medmicro/cment.htm
(678 words)
|
|
| |
| | Complement |
| | The complement activation can be divided into three pathways: classical pathway, alternative pathway and membrane attack pathway. | | | Both classical and alternative pathways lead to the activation of C5 convertase and result in the production of C5b which is essential for the activation of the membrane attack pathway. | | | Complement deficiencies also occur in immune complex diseases (e.g. |
|
http://pathmicro.med.sc.edu/ghaffar/complement.htm
(1461 words)
|
|
| |
| | The Complement System |
| | The massive release of anaphylatoxins (C3a, C5a) may cause dangerous swelling (edema) of the airways, as well as of the skin and intestine. | | | A deficiency of C2 (or one of the other early components) is frequently found in patients with the autoimmune disorder system lupus erythematosus (SLE). | | | The binding of antibody to its antigen often triggers the complement system through the so-called classical pathway. |
|
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Complement.html
(1281 words)
|
|
| |
| | HIV and HIV-infected cells differentially activate the human complement system independent of antibody. |
| | An interaction between HIV and the complement system, however, has not been investigated in any detail. | | | The human retroviruses HTLV-I and HIV-I have previously been shown not to be lysed by human serum. | | | In the case of virus-infected cells this activation is mediated by the alternative pathway of complement, whereas the classical pathway seems to be in operation for the triggering of the complement system by purified virus and recombinant envelope glycoprotein (gp 160). |
|
http://www.aegis.com/aidsline/1989/dec/M89C0404.html
(436 words)
|
|
| |
| | The Complement System |
| | (At least, that's the way the system is supposed to work -- this experiment has not been done -- yet.) | | | c) The transplant survives the complement attack, and the immune system is cannot attack the graft. | | | Protective proteins appear on all human cells that are in contact with the blood stream. |
|
http://whyfiles.org/007transplant/complement_diag.html
(126 words)
|
|
| |
| | BioCarta - Charting Pathways of Life |
| | Most complement proteins exist in plasma as inactive precursors that cleave and activate each other in a proteolytic cascade in response to three different mechanisms by which the complement system is activated, the classical pathway, the alternative pathway and the lectin-induced pathway (see Pathways for each of these individually). | | | Deficiencies in components of the complement system have been identified in humans that cause a variety of immune related disorders. | | | While activation of the complement system is a key part of the immune system, it must also be kept in check to prevent inappropriate or exaggerated responses. |
|
http://www.biocarta.com/pathfiles/h_compPathway.asp
(373 words)
|
|
| |
| | Faculty - L. Courtney Smith |
| | The echinoderm immune system: characters chared with the vertebrate immune system, and characters arising later in deuterstome phylogeny. | | | Complement homologues and other putative immune response genes suggest immune system homology within the deuterostomes. | | | The echinoid immune system and the phylogenetic occurrence of immune mechanisms in deuterostomes. |
|
http://www.gwu.edu/~clade/faculty/smith
(1031 words)
|
|
| |
| | The Complement System and Diving |
| | Conversely, those with chronically 'used up' complement may be a lesser risk, as in the chronic asthmatic or the atopic patient. | | | Considerable research over the past 10 years has been directed toward elucidation of the complement system and it's effect on the body in association with bubbles. | | | Finally, there might be individual variation in the sensitivity to DCS. |
|
http://www.scuba-doc.com/cmplmnt.html
(599 words)
|
|
| |
| | Complement Molecules |
| | Complement is part of the innate immune system which means it is non-selective and will attack any invading bacteria. | | | There are two other ways that the complement system helps the immune system. | | | Lastly, complement proteins can bind to receptors on the macrophages of your immune system, enhancing their ability to phagocytose (basically, encircle and digest) the invading cell. |
|
http://www.newton.dep.anl.gov/askasci/mole00/mole00193.htm
(512 words)
|
|
| |
| | two's complement number system - Hutchinson encyclopedia article about two's complement number system |
| | Number system, based on the binary number system, that allows both positive and negative numbers to be conveniently represented for manipulation by computer. | | | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. | | | In the two's complement system the most significant column heading (the furthest to the left) is always taken to represent a negative number. |
|
http://encyclopedia.farlex.com/two%27s+complement+number+system
(130 words)
|
|
| |
| | MedlinePlus Medical Encyclopedia: Complement component 3 (C3) |
| | Complement activity is also measured to monitor how severe a disease is or to determine if treatment is working. | | | For example, patients with active lupus erythematosus may have low levels of C3 and C4, and these component levels may be watched as an indicator of disease activity. | | | Complement is a group of blood proteins that cause immune responses and inflammation. |
|
http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm
(783 words)
|
|
| |
| | The Complement System |
| | The difference between the humoral-mediated immune system and the cell-mediated system, says John Atkinson of the School of Medicine at Washington University in St. Louis, is "how the foreign cell is recognized, not in the final pathway of destruction." | | | Complement causes hyperacute rejection (defined) which kills foreign bodies much faster than a cell-mediated immune attack. | | | But there's another part of the immune system that's just as deadly -- and much quicker on the draw. |
|
http://whyfiles.org/007transplant/complement.html
(500 words)
|
|
| |
| | BioCarta - Charting Pathways of Life |
| | There are two branches of the complement system, the classical pathway that is initiated by antibody-antigen complexes on a cell and the alternative pathway that is antibody independent. | | | The complement system of plasma proteins is an important part of the immune system that forms a cascade of factors that lyses foreign cells. | | | At this point the alternative pathway proceeds in the same manner as the classical pathway, recruiting additional complement factors (C6, C7, C8 and C9) to ultimately form the membrane attack complex and lyse the associated cell. |
|
http://www.biocarta.com/pathfiles/h_alternativePathway.asp
(343 words)
|
|
| |
| | GLOSSARYC |
| | cardiovascular system The human circulatory system consisting of the heart and the vessels that transport blood to and from the heart. | | | circulatory system, open A system in which the circulating fluid is not enclosed in vessels at all times; found in insects, crayfish, some mollusks, and other invertebrates. | | | circulatory system, closed A system that uses a continuous series of vessels of different sizes to deliver blood to body cells and return it to the heart; found in echinoderms and |
|
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossC.html
(2109 words)
|
|
| |
| | Nature Biotechnology |
| | During and after the immune response, the complement system continues to participate through cell lysis of infected cells and the later clearance of immune complexes from the blood. | | | This blood-based system is composed of a series of enzymes and precursors that interact with each other in a series of steps--each of which yields a "gono go" commitment to recognizing and attacking a foreign invader. | | | The complement system is the immune system's first line of defense to invasion by foreign pathogens. |
|
http://www.nature.com/nbt/wilma/v16n9.904167719.html
(100 words)
|
|
| |
| | Complement System |
| | Name a molecule that activates the complement system as part of a specific immune response. | | | This can occur immediately and does not require prior exposure to the molecules. | | | The complement system can be activated in two main ways. |
|
http://courses.washington.edu/conj/inflammation/complement.htm
(475 words)
|
|
| |
| | Amazon.com: The Complement System: Books: K. Rother,Gerd O. Till,Gertrud M. Hänsch |
| | Describes the basic regulation of the serum complement system. | | | This book provides the present state-of-the-art of the theoretical fundamentals and basic biochemical features of the complement system, its activation and regulation. | | | This is a thorough revision of the 1988 edition, with additional chapters addressing the progress made in the understanding of the interconnection of the complement system and other mediator systems, especially with cellular receptors. |
|
http://www.amazon.com/exec/obidos/tg/detail/-/3540618945?v=glance
(546 words)
|
|
| |
| | Complement |
| | The Interaction of Micro-organisms with the Complement System: | | | THE ROLE OF COMPLEMENT IN THE ELIMINATION OF MICROORGANISMS |
|
http://www-micro.msb.le.ac.uk/MBChB/Merralls/Merralls.html
(17 words)
|
|
|
