Immunetolerance or immunological tolerance is the process by which the immune system does not attack an antigen . ref cite book last Pontell first Emile B. title Immunetolerance research developments ... or self tolerance , in which the body does not mount an immune response to self antigens, or induced tolerance , in which tolerance to external antigens can be created by manipulating the immune system. It occurs in three forms central tolerance, peripheral tolerance and acquired tolerance. Genetic ... section date May 2011 Acquired or induced tolerance refers to the immune system s adaptation to external ... important natural kinds of acquired tolerance is immunetolerance in pregnancy , where the fetus and the placenta must be tolerated by the maternal immune system . In adults, tolerance may be induced ... required for stimulation of an immune response. Fact date September 2011 Tolerance is most ... pmid 11297999 ref Oral tolerance, the specific suppression of cellular and or humoral immune reactivity ... colitis . Immunetolerance to allografts This section is linked from immunetolerance to allografts ... from immune surveillance.The second is when a state of tolerance has been induced biologically,usually by previous exposure to the antigen of the donor in a manner that cause immunetolerance ... ImmuneTolerance Network http www.immunetolerance.elsevier.com International Conference on ImmuneTolerance MeshName Immunetoleranceimmune system Category Immune system Category ... X linked syndrome IPEX . Central tolerance This section is linked from Self tolerance Central tolerance occurs during lymphocyte development and operates in the thymus and bone marrow. Here ... ref cite journal author Sprent J, Kishimoto H title The thymus and central tolerance journal Philos ... tolerance learning self control in the thymus journal Nat Rev Immunol volume 5 issue 10 pages ... of T cell central tolerance, additional sources of antigen are made available in the thymus by the action ... more details
Immunetolerance in pregnancy or gestational maternal immunetolerance is the absence of a maternal immune ... 0152.htm ref Insufficient tolerance Many cases of spontaneous abortion may be described in the same way as maternal transplant rejection , ref name clark and a chronic insufficient tolerance may cause infertility . Other examples of insufficient immunetolerance in pregnancy are Rh disease and pre eclampsia ... in egg donation may be caused by reduced immunetolerance from the mother. ref name van der Hoorn2010 ... DEFAULTSORT ImmuneTolerance In Pregnancy Category Health issues in pregnancy pl Tolerancja immunologiczna ... and the fetus, creating an Immune privilege immunologically privileged site . For this purpose, it uses ... mechanism used by parasitic nematode s to avoid detection by the immune system of their host biology ... of migratory immune cells between the developing embryo and the body of the mother something ... the immune system of the mother. ref cite journal url http cvr.bio.uci.edu downloads APS.pdf title ... barrier is not the sole means to evade the immune system, as foreign fetal cells also persist in the maternal ... thereby may pass through the human placenta, providing immune protection to the fetus against infectious diseases. One model for the induction of tolerance during the very early stages of pregnancy ... in the reproductive system and expressed on gametes , suppress any potential immune responses, and inhibit ... and act as functional groups that suppress the immune response. The major uterine and fetal ... fetal tolerance journal Nat. Immunol. volume 7 issue 3 pages 241 6 year 2006 month March pmid ... with each additional Rh incompatible pregnancy. One cause of pre eclampsia is an abnormal immune response ... immune modulating factors present in seminal fluid. ref name Robertson cite web author Sarah ..., they will be destroyed through the immune response and ultimately the fetus will not be able ... by inhibition of maternal immune responses aspirin has no effect in this case. ref cite pmid ... more details
Tolerance or toleration is the practice of permitting a thing of which one disapproves, such as social, ethnic, sexual, or religious practices. Tolerance , tolerant , or toleration may also refer to Engineering tolerance , permissible limit s of variation in an object Tolerance analysis , the study of accumulated variation in mechanical parts and assemblies Tolerance coning , a budget of all tolerances that affect a particular parameter Paradox of tolerance , the problem that a tolerant person is antagonistic toward intolerance, hence intolerant of it Tolerance group , a way to ensure employees do not exceed their authority in financial transactions in an ERP system Tolerance Monument , an outdoor sculpture near Goldman Promenade in Jerusalem, Israel Tolerance tax , a historic tax that was levied ... , a historic political party active in Connecticut Biology, medicine, physiology Desiccation tolerance , the ability of an organism to endure extreme dryness Drug tolerance or physiological tolerance, a decrease in the response to a substance due to previous exposure Alcohol tolerance Multidrug tolerance or antibiotic tolerance, the ability of a disease causing microorganism to resist killing by antimicrobials Immunetolerance or immunological tolerance, the process by which the immune system does not attack an antigen Central tolerance , a mechanism by which newly developing T cells and B cells are rendered non reactive to self Immunetolerance in pregnancy or gestational maternal immunetolerance Low frustration tolerance , a concept in Rational Emotive Behavioral Therapy Pain tolerance , the maximum level of pain that a person is able to tolerate Shade tolerance , a plant s abilities to tolerate low light levels Mathematics and statistics Tolerance, a measure of multicollinearity in statistics Tolerance interval , a type of statistical probability Tolerant sequence , in mathematical logic See also Intolerance disambiguation Ontario Consultants on Religious Tolerance Toleration ... more details
of Immunology 178 4276 4283. ref Placenta and Fetus Main Immunetolerance in pregnancy The mother ... in the induction of immunetolerance. Foxp3 and neuropillin are markers expressed by the regulatory ... first mature at puberty, after immunetolerance is established, therefore the body ...Immune privilege is a term used to describe certain sites in the body which are able to tolerate the introduction of antigen without eliciting an inflammation inflammatory immune response. Tissue biology ... by the immune system . However in immune privileged sites, tissue grafts can survive for extended ... Kaer, Luc 1999 . Immune Privilege Keeping an Eye on Natural Killer T Cells. The Journal of Experimental ... brain brain , but this is now known to be incorrect and indeed immune cells of the CNS contribute to the maintenance ... al 2006 . Nature Neuroscience, Immune cells contribute to the maintenance of neurogenesis and spatial ... s Immune privilege is thought to be an evolutionary adaptation to protect vital structures from the potentially damaging effects of an inflammatory immune response. Inflammation in the brain or eye can lead to loss of organ function, while immune responses directed against a fetus can lead ... advantage of this. Mechanisms Antigens from immune privileged regions have been found to interact with T cell s in an unusual way inducing tolerance as opposed to a destructive response. ref name Janeway Janeway, C. A.Jr., Travers, P., Walport, M., Shlomchik. M.J. 2005 . ImmunoBiology, the immune system in health and disease 6th Edition. Garland Science. ref Immune privilege has emerged as an active ... atic drainage, limiting the immune system s ability to enter the site. Other factors that contribute to the maintenance of immune privilege include low expression of classical Major histocompatibility ... from the rest of the body s immune system can cause them to become targets of autoimmune diseases ... Ocular immune system As well as the mechanisms that limit immune cell entry and induce immune suppression ... more details
Immune dysregulation is an unrestrained or unregulated immune response. An inappropriately robust, or weak immune response. Immune dysfunction. References reflist Category Immune system Category Medical terms medical stub ... more details
image of a single neutrophil yellow , engulfing anthrax bacteria orange . An immune system is a system ... disease . In order to function properly, an immune system must detect a wide variety of agents, from ... tissue . Pathogens can rapidly evolution evolve and adapt to avoid detection and destruction by the immune ... immune system, in the form of enzyme s which protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryote s and remain in their modern descendants, such as plants .... Adaptive immune system Adaptive or acquired immunity creates immunological memory after an initial ... pathogen. This process of acquired immunity is the basis of vaccination . Disorders of the immune ... F23 26, Retrieved Aug 13, 2010 ref ref http www.ncbi.nlm.nih.gov pmc articles PMC2364095 Chronic Immune ... occur when the immune system is less active than normal, resulting in recurring and life ... medication. In contrast, autoimmunity result from a hyperactive immune system attacking ... covers the study of all aspects of the immune system. History of immunology details History ... that examines the structure and function of the immune system. It originates from medicine and early ... that certain dogs and mice were immune to this venom. ref cite journal author Ostoya P title ... or Medicine 1908 Nobelprize.org Accessed 8 January 2007 ref Layered defense The immune system protects ... breaches these barriers, the innate immune system provides an immediate, but non specific response. Innate immune systems are found in all plant s and animal s. ref name Litman cite journal author Litman GW, Cannon JP, Dishaw LJ title Reconstructing immune phylogeny new perspectives journal Nature ... of protection, the adaptive immune system , which is activated by the innate response. Here, the immune ... memory , and allows the adaptive immune system to mount faster and stronger attacks each ... 2007 ref div align center class wikitable Components of the immune system style background ccccff Innate ... more details
Image Immune22.gif thumb right Immune Complex Diseases An immune complex is formed from the integral binding of an antibody to a soluble antigen . The bound antigen acting as a specific epitope , bound to an antibody is referred to as a singular immune complex. After an antigen antibody reaction, the immune complexes can be subject to any of a number of responses, including Complement system complement deposition, opsonization , phagocytosis , or processing by protease s. Red blood cell s carrying Complement receptor 1 CR1 receptors on their surface may bind C3b decorated immune complexes and transport them to phagocytes, mostly in liver and spleen, and return back to the general circulation. Immune complexes may themselves cause disease when they are deposited in organs, e.g. in certain forms of vasculitis . This is the third form of hypersensitivity in the Gell Coombs classification, called Type III hypersensitivity . Immune complex deposition is a prominent feature of several autoimmune diseases, including systemic lupus erythematosus , cryoglobulinemia , rheumatoid arthritis , scleroderma and Sj gren s syndrome . External links http www.immunecentral.com immune system iss20.cfm immunecentral.com http www.immune complex.ch www.immune complex.ch immunology stub Immune system Category Immunology Category Immune system ca Complex immunitari de Antigen Antik rper Reaktion es Complejo inmune fr Complexe immun nl Immuuncomplex pl Kompleks immunologiczny pt Complexo imune ... more details
Infobox Single See Wikipedia WikiProject Songs Name Immune Type Single music Single Artist Low band Low Cover Immune single.jpeg Cover size 200 Released 1999 Recorded Genre indie rock Length Label Tugboat Records Producer Last single Christmas Low album Christmas br 1999 This single Immune br 1999 Next single Bombscare EP br 2000 Immune is a 7 single by Duluth, Minnesota slowcore group Low band Low , released in 1999 . Track listing A. Immune 3 29 br AA. I Remember 3 16 Low band Category Low songs Category 1999 singles 1990s song stub ... more details
Infobox disease Name Immune disorder Image Caption DiseasesDB ICD10 ICD10 D 80 d 80 ICD10 D 89 d 80 ICD9 ICD9 273 , ICD9 279 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID D007154 An immune disorder is a dysfunction of the immune system . These disorders can be characterized in several different ways By the component s of the immune system affected By whether the immune system is overactive or underactive By whether the condition is congenital or acquired According to the International Union of Immunological Societies , more than 150 primary immunodeficiency diseases PIDs have been characterized ... cgi pmidlookup?view long&pmid 17673650 ref Due to redundancies in the immune system ... Immunodeficiencies main immunodeficiency Primary immunodeficiency Primary immune deficiency diseases are those caused by inherited genetic mutations. Secondary or acquired immune deficiencies are caused by something outside the body such as a virus or immune suppressing drugs. ref cite web url http www.niaid.nih.gov topics immunedeficiency understanding pages default.aspx title Primary Immune ... accessdate 31 August 2011 ref Primary immune diseases are at risk to an increased susceptibility to, and often ... ref Primary immune deficiencies Severe combined immunodeficiency SCID DiGeorge syndrome Hyperimmunoglobinemia ... primary immune disorder that presents onset in the late teens years. Chronic granulomatous disease ... disease XLP Ataxia telangiectasia Secondary immune deficiencies AIDS Allergies main allergy An allergy is an abnormal immune reaction to a harmless antigen. Seasonal allergy Mastocytosis Perennial allergy Anaphylaxis Food allergy Allergic rhinitis ref http www.merckmanuals.com home immune disorders.html ref Atopic dermatitis See also Immune system Disorders of human immunity Disorders ... Immune Disorders Medical conditions Immune disorders Immunoproliferative disorders Hypersensitivity and autoimmune diseases medicine stub Category Immune system disorders ... more details
Infobox single See Wikipedia WikiProject Songs Name Absolutely Immune Cover Absolutely Immune.jpg Border yes Caption UK 7 sleeve Artist Act band Act Album Laughter, Tears and Rage B side Bloodrush br States of Logic Released start date 1987 9 7 df yes Format 7 vinyl , 12 inch single 12 vinyl Recorded 1987 Genre Synthpop Length 3 21 Single Version br 4 37 Album Version br 5 34 Absolutely Immune II br 6 17 Extended Version Label ZTT Records ZTT Writer Thomas Leer , Claudia Br cken Producer Stephen Lipson Certification Last single Snobbery and Decay br 1987 This single Absolutely Immune br 1987 Next single Chance Act song Chance br 1988 Misc Absolutely Immune is the second single from Act band Act . It was released by ZTT Records on start date 1987 9 7 df yes . Unlike the previous single Snobbery and Decay and its myriad of release formats, Absolutely Immune was only released on one 7 and two 12 single formats. The song reached 97 in the UK Singles Chart ref cite web url http www.chartstats.com songinfo.php?id 14700 title Chart Stats Act Absolutely Immune accessdate Start date 2009 7 19 df yes ref . The band s 2004 box set Laughter, Tears and Rage The Anthology featured a number of previously unreleased tracks from this single. These include an instrumental version of Bloodrush entitled Bloodrush Silent , as well as an instrumental version of Absolutely Immune and a mix called Absolutely Immune Take 4 . Track listing All songs written and composed by Thomas Leer and Claudia Br cken , except where noted. 7 vinyl UK ZTT IMM 1 tracklist headline Side one title1 Absolutely Immune note1 Single Version length1 3 21 tracklist headline Side two title1 Bloodrush length1 4 07 12 vinyl UK ZTT TIMM 1 tracklist headline Side one writing credits yes title1 Absolutely Immune note1 Extended ... Side one title1 Absolutely Immune II length1 5 34 tracklist headline Side two title1 Bloodrush ... Absolutely Immune music video Uploaded by ZTT Records DEFAULTSORT Absolutely Immune Category 1987 ... more details
An immune receptor or immunologic receptor is a Receptor biochemistry receptor , usually on a cell membrane , which binds to a substance for example, a cytokine and causes a response in the immune system . Types The main receptors in the immune system are pattern recognition receptors PRRs , Toll like receptor s TLRs , killer activated receptor killer activated and killer inhibitor receptor s KARs and KIRs , complement receptor s, Fc receptors , B cell receptor s and T cell receptor s. ref name Immunology20Unless Lippincott s Illustrated Reviews Immunology. Paperback 384 pages. Publisher Lippincott Williams & Wilkins July 1, 2007 . Language English. ISBN 0781795435. ISBN 978 0781795432. Page 20 ref class wikitable Comparison Receptor Bind to ref name Immunology20Unless Function ref name Immunology20Unless align left pattern recognition receptors PRRs br e.g. Toll like receptor TLRs , NOD like receptor NLRs pathogen associated molecular pattern s PAMP Mediate cytokine production inflammation destroying pathogen killer activated receptor killer activated and killer inhibitor receptor s KARs and KIRs Avails NK cells to identify abnormal host cells KAR or inhibit inappropriate host cell destruction KIR complement receptor s complement proteins on e.g. microbes Allow phagocytic and B cells to recognize microbes and immune complexes Fc receptors epitope antibody complexes Stimulate phagocytosis B cell receptor s epitope s B cell differentiation into plasma cells and proliferation T cell receptor s linear epitopes bound to major histocompatibility complex MHC Activate T cells Cytokine receptor s cytokine s regulation and co ordination of immune responses See also antigen templates at bottom References references External links MeshName immunologic receptor Transmembrane receptors Immune receptors Category Immune system nl Immuunreceptor ar ... more details
Infobox VG title Immune Attack image caption developer Federation of American Scientists , Escape Hatch Entertainment publisher Federation of American Scientists designer Escape Hatch Entertainment, University of Southern California , Brown University engine Vicious Cycle Development Environment released May 23, 2008 genre Educational game Educational , Sci Fi Scientific Fiction modes Single player ratings platforms Personal computer PC media CD ROM , Download requirements DirectX 9.0c input Keyboard computing Keyboard and Mouse computing Mouse Immune Attack is an educational video game created by the Federation of American Scientists and Escape Hatch Entertainment. Early development of the game was done by Brown University , in collaboration with the University of Southern California , under a grant from the National Science Foundation . The game is designed to teach immunology to high school students, although later versions will cater to college aged students as well. The game was officially released in May of 2008 , and is freely available for download. Game summary Deleted image removed Image ImmuneAttackScanningRBC.JPG right thumb Scanning a red blood cell for information in Immune Attack The protagonist of Immune Attack is a teenaged prodigy in the near future with a unique immunodeficiency in which the immune system is present, yet non functional as if all the immune cells have forgotten what to do. The hero decides to take matters into her own hands, and allies herself with a team of scientists to create a nanobot with the abilities to teach cells how to fight bacterial and viral infections . The player assumes the role of a pilot remote controlling the nanobot Explorer ... in the human body in order to determine how to train the immune system. Visual and audio clues in the game provide the information needed to accomplish this goal. Each subsequent level of Immune Attack ... article.pl?sid 08 06 29 198238 External links http www.fas.org immuneattack Official Immune Attack ... more details
Refimprove date July 2011 The immune repertoire, is defined as, the number of different sub types an organism s immune system makes, of any of the 6 key types of protein, either immunoglobulin or T cell receptor. In most vertebrates, immune systems have 6 key types of proteins, which help the immune ... immune system is able to detect them depends on how many sub types of the proteins, it is able to produce. An immune system that produces a wide variety, will likely have one or two subtypes that recognise any germ we are exposed to. An immune system that produces just a few, will likely miss or not see certain germs or viruses and these could then go on, unchallenged, to cause disease. Immune repertoire is defined, as the number of sub types that exist in an organism s immune system, of one or other of the 6 key types of proteins, in a certain compartment of the immune system i.e. a certain set of cells from the immune system . How large is the immune repertoire? A few researchers have measured immune repertoires for humans, but as the task until recently was technically difficult, it was seldom attempted. Estimates will depend on the precise type or compartment of immune cells studied ... doi 10.1126 science.286.5441.958 ref How is the immune repertoire generated The repertoire is generated, by immune system cells lymphocytes cutting a bit of DNA from 2 or 3 parts of the genome, and joining ... sequences. Following that, the repertoire is edited. Cells whose protein would cause an immune .... And cells with new types, may be added Factors affecting immune repertoire age the immune system ... of proteins that recognise the virus, and thus fine tune the immune response. Also after the disease is gone, cells which recognised it, tend to hang around in the body. immune memory. generally after ... genetic diseases, people don t have the genes for the 6 immune proteins or don t have the genes to do the splicing. Thus they cant generate the immune repertoire, or have a reduced one Treatments that seriously ... more details
Infobox Album See Wikipedia WikiProject Albums Name Immune to Gravity Type Album Artist Moth band MOTH Cover Immune to Gravity.jpg Released March 26, 2006 Recorded 2005 Genre Alternative rock br Indie rock br Power pop Length 32 32 Label Hey Domingo Producer Todd Sullivan Reviews PopMatters Rating 7 10 http www.popmatters.com pm review 3006 moth immune to gravity link Allmusic Rating 2.5 5 Allmusic class album id r823231 pure url yes link Artistdirect rating 2.5 5 http www.artistdirect.com nad store artist album 0,,3552502,00.html link Last album Drop Deaf br 2004 This album Immune to Gravity br 2006 Next album Immune to Gravity is the fifth album by the United States American alternative rock band Moth band MOTH . Track listing Helpless 2 55 Revolution 2 50 Girl on Girl 2 18 Sticks and Stones 3 09 Perfect 3 07 Supermodel 2 59 Immune to Gravity 2 37 Constantly On 2 59 Put Her Down 2 52 Shock City 3 01 How Could You? 3 41 Recording process The album was recorded at The Mouse House in Altadena, California . The song Perfect features backing vocals from Inara George . Are You Really For Real? was cut from the album. Writing and composition This album is kind of paying homage to the late 70s pop stuff, like Wire band Wire and Television band Television and bands like that, Stenz said. I think the Virgin record was more of a collection of songs over a long period of time because it had been a while since we recorded. The next record after that was Drop Deaf, a very aggressive album. And this one is a very stripped down rock record, where there s no unnecessary bells and whistles. Credits Brad Stenz vocals, guitar Eric Diedrichs guitar Eli White bass Kevin Hogle drums Category 2006 albums Category Moth albums ... more details
Orphan date February 2009 Immune adherence was described by Nelson 1953 ref name Nelson53 cite journal last1 Nelson Jr first1 RA title The immune adherence phenomenon an immunologically specific reaction between microorganisms and erythrocytes leading to enhanced phagocytosis journal Science volume 118 issue 3077 pages 733 7 year 1953 pmid 13122009 doi 10.1126 science.118.3077.733 ref for an in vitro immunological reaction between normal erythrocyte s and a wide variety of microorganisms sensitization immunological sensitized with their individually specific antibody and Complement system complement erythrocytes were observed to adhere to microorganisms. ref name Nelson53 It was later recognized to occur in vivo. ref name Nelson56 cite journal last1 Nelson Jr first1 RA title The immune adherence phenomenon a hypothetical role of erythrocytes in defence against bacteria and viruses journal Proceedings of the Royal Society of Medicine volume 49 issue 1 pages 55 8 year 1956 pmid 13289834 pmc 1889026 ref The phenomenon is now resolved as a complement dependent binding reaction of erythrocytes ... & Wilkins, ISBN 0781721202 ref Function of the immune adherence in vivo Human erythrocytes express ... complement receptor type 1, immune complexes, and the rheumatic diseases journal Arthritis and rheumatism volume 31 issue 2 pages 153 8 year 1988 pmid 3279961 doi 10.1002 art.1780310201 ref Immune complexes ... immune complexes traverse sinusoids of the liver and spleen, where they encounter fixed phagocyte ... effect a transfer of the immune complexes to their surface. Then erythrocytes leave the liver and spleen bearing off immune complexes and work on the next round of transfer of immune complexes ... first2 G title The erythrocyte immune complex glomerulonephritis connection in man journal Kidney ... and its receptor in the elimination of immune complexes journal The New England journal of medicine ... References Reflist Category Immunology Category Immune system ... more details
Infobox album See Wikipedia WikiProject Albums Name Immune Type Studio album Artist Soul Embraced Cover Soul Embraced Immune.jpg Released February 25, 2003 Recorded Genre Alternative metal , ref name allmusic cite web author Henderson, Alex title Immune url Allmusic class album id r629195 pure url yes publisher Allmusic accessdate 2011 02 15 ref death metal black metal ref name allmusic Length Label Solid State Records Producer Last album This Is My Blood br 2002 This album Immune br 2003 Next album Dead Alive album Dead Alive br 2008 Album ratings rev1 Allmusic rev1score Rating 3 5 ref name allmusic Automatically generated by DASHBot Immune is the third studio album by Soul Embraced , released on February 25, 2003. Track listing tracklist title1 Immune to Emotion length1 3 47 title2 The Hero length2 4 33 title3 I Bury You length3 3 43 title4 Abandoned length4 4 32 title5 Someone Just Walked Across My Grave length5 3 26 title6 Someday length6 4 09 title7 Existence in Despair length7 4 05 title8 On Your Own length8 3 32 title9 Seems Like Forever length9 3 54 title10 Shadow World length10 3 19 References Reflist Soul Embraced Category Soul Embraced albums Category 2003 albums Category Solid State Records albums christian album stub 2000s death metal album stub ... more details
Pauci immune is a general term used to refer to a form of vasculitis that is associated with minimal evidence of hypersensitivity upon immunofluorescence . They can be associated with Anti neutrophil cytoplasmic antibody antineutrophil cytoplasmic antibodies ANCA . ref name pmid19084310 cite journal author Boll e G, No l LH, Suarez F, et al. title Pauci immune crescentic glomerulonephritis associated with ANCA of IgA class journal Am. J. Kidney Dis. volume 53 issue 6 pages 1063 7 year 2009 month June pmid 19084310 doi 10.1053 j.ajkd.2008.10.039 url http linkinghub.elsevier.com retrieve pii S0272 6386 08 01604 1 ref An example is Wegener s granulomatosis . ref name urlFinal Diagnosis Case 51 cite web url http path.upmc.edu cases case51 dx.html title Final Diagnosis Case 51 work accessdate 2009 06 08 ref See also Systemic vasculitis Pauci immune peak incidences in 50 60 year olds symptoms include intermittent fever weight loss dyspnea arthalagia External links wikt paucity References reflist Systemic vasculitis Category Vascular related cutaneous conditions medicine stub pt Pauci imune ... more details
Peripheral tolerance is Immunetolerance immunological tolerance developed after T and B cells mature and enter the periphery. These include the suppression of autoreactive cells by regulatory T cells and the generation of hyporesponsiveness anergy in lymphocytes which encounter antigen in the absence of the co stimulatory signals that accompany inflammation, or in the presence of co inhibitory signals. Ignorance Potentially self reactive T cells are not activated at immunoprivileged sites, where antigens are expressed in non surveillanced areas. This can occur in the testes, for instance. Anatomical barriers can separate the lymphocytes from the antigen, an example is the central nervous system the blood brain barrier . Naive T cells are not present in high numbers in peripheral tissue, but stay mainly in the circulation and lymphoid tissue. Some antigens are at too low a concentration to cause an immune response a subthreshold stimulation will lead to apoptosis in a T cell. Immunological privileged areas Includes the brain, the anterior chamber of the eye, the testis and the foetus. These areas are protected by several mechanisms Fas ligand expression bind Fas on lymphocytes, which dies in apoptosis, anti inflammatoric cytokines including TGF beta and IL 10 and blood tissue barrier with tight junctions between the endothelial cells. In the placenta Indoleamine 2,3 dioxygenase IDO indolamine 2,3 dioxygenase breaks down tryptophan, creating a tryptophan desert micro environment which inhibits lymphocyte proliferation. Split Tolerance As many pathways of immunity are interdependent, they do not all need to be tolerised. For example, tolerised T cells will not activate autoreactive B cells. Without this CD4 T cell help ,the B cells will not be activated. Induced anergy T cells can be made non responsive to antigens presented if the T cell engages an MHC molecule without ... to autoimmune reactions. Immune system Category Immune system Category Immunology immunology stub ... more details
of antigens by the immature B cell s in the bone marrow is critical to the development of Immunetolerance ... , they are also involved with immune regulation but are not directly involved in central tolerance ... Peripheral tolerance References Reflist 2 Immune system DEFAULTSORT Central Tolerance Category Immune ...Central tolerance is the mechanism by which newly developing T cell s and B cell s are rendered non reactive to self ref http www immuno.path.cam.ac.uk immuno part1 lec11 lec11 97.html Lecture 12. Tolerance Bot generated title ref . The concept of central tolerance was proposed in 1959 by Joshua Lederberg ... theory of immunity and tolerance, and is often mistakenly attributed to MacFarlane Burnet ref Wing K. and Sakaguchi S. 2010 Regulatory T cells exert checks and balances on self tolerance and autoimmunity ... that defines whether an antigen that is encountered will induce tolerance, with immature lymphocytes being tolerance sensitive. Lederberg s theory that self tolerance is learned during lymphocyte development ... in the late 1980s when tools to analyze lymphocyte development became available. Central tolerance is distinct from periphery tolerance in that it occurs while cells are still present in the primary lymphoid organs thymus and bone marrow , prior to export into the periphery, while peripheral tolerance ... tolerance and peripheral tolerance mechanisms, as they can be generated from self or foreign reactive T cells in the thymus during T cell differentiation, but they exert their immune suppression in the periphery on other self or foreign reactive T cells. Requirement for central tolerance cleanup section date May 2009 Central tolerance for T cells is induced in the thymus, where developing thymocytes .... For B cells the central tolerance is executed in the bone marrow the B cell receptor the membrane ... ref cite journal author Sprent J, Kishimoto H title The thymus and central tolerance journal Philos ... tolerance learning self control in the thymus journal Nat Rev Immunol volume 5 issue 10 pages 772 ... more details
distinguish multidrug resistance Multidrug tolerance or antibiotic tolerance is the ability of a disease causing microorganism to resist killing by antibiotic s or other antimicrobial s. It is mechanistically distinct from multidrug resistance ref name Lewis2007 cite journal author Lewis K title Persister cells, dormancy and infectious disease journal Nat Rev Microbiol. volume 5 issue 1 pages 48 56 year 2007 url http www.nature.com nrmicro journal v5 n1 abs nrmicro1557.html doi 10.1038 nrmicro1557 pmid 17143318 ref It is not caused by mutant microbes, but rather by microbial cells that exist in a transient, dormancy dormant , non dividing state. Microorganisms that display multidrug tolerance can be bacteria , pathogenic fungi fungi or protozoa parasites . Relevance to chronic infections Multidrug tolerance is caused by a small subpopulation of microbial cells termed persisters. ref name Bigger1944 cite journal author Bigger JW title Treatment of staphylococcal infections with penicllin by intermittent sterilization journal Lancet volume 244 issue 6320 pages 497 500 date 14 October 1944 ... cannot be eliminated by the immune system, they become a reservoir from which recurrence of infection ... Chronic infections can affect people of any age, health, or immune status. Medical importance Bacterial multidrug or antibiotic tolerance poses medically important challenges. ref name Lewis2007 It is largely ... from multidrug resistance Unlike resistance, multidrug tolerance is a wikt transient transient ..., multidrug tolerance is caused by a reversible physiological state in a small subpopulation of genetically ... mechanisms that underlie persister cell formation and multidrug tolerance are largely unknown ... Mediated Multidrug Tolerance and its Neutralization by HipB journal Science volume 323 issue ... In May 2011, it was reported by Nature.com that aminoglycosides can help suppress multidrug tolerance ... cells and mode of action of HipA DEFAULTSORT Multidrug Tolerance Category Antibiotics Category Bacteria ... more details
incomplete article date December 2011 Physiological tolerance or drug tolerance is commonly encountered in pharmacology , when a subject s reaction to a specific drug and concentration of the drug is progressively reduced, requiring an increase in concentration to achieve the desired effect ref MeshName Drug Tolerance ref . Drug tolerance can involve both psychological drug tolerance and Physiological tolerance physiological factors. Characteristics of drug tolerance it is reversible, the rate depends ... effects of the same drug. Physiological tolerance also occurs when an organism builds up a resistance ..., such as salt or pesticides. A rapid drug tolerance is termed tachyphylaxis . Tachyphylaxis Main Tachyphylaxis Tachyphylaxis is a sudden onset drug tolerance which is not dose dependant and is diffcult to reverse. Mechanisms Pharmacokinetic Tolerance Pharmacokinetic Tolerance Also known as Dispositional tolerance occurs because of a decreased quantity of the substance reaching the site it affects ... e.g. CYP450 enzymes. Pharmacodynamic Tolerance Pharmacodynamic Tolerance Also known as Reduced ... Professional isbn 0071347216 pages 17 ref Morphine as an Example Main Morphine Tolerance to the analgesic effects of morphine is fairly rapid. There are several hypotheses about how tolerance develops ... author Roshanpour M, Ghasemi M, Riazi K, Rafiei Tabatabaei N, Ghahremani MH, Dehpour AR title Tolerance ... tolerance and dependence journal Pharmacol. Ther. volume 117 issue 2 pages 199 206 year 2008 pmid ... responsible for opioid tolerance. CCK antagonist drugs, specifically proglumide , have been shown to slow the development of tolerance to morphine or any other kind of drug, including alcohol. See also ... tolerance Cross tolerance Drug resistance Tachyphylaxis Multidrug resistance References Reflist Pharmacology DEFAULTSORT Drug Tolerance Category Pharmacodynamics Category Drug addiction Pharma stub de Toleranzentwicklung fr Accoutumance he lv Tolerance farmakolo ija lt Tolerancija chemin ms ... more details
Unreferenced stub auto yes date December 2009 Cross tolerance refers to a pharmacological phenomenon, in which a patient being treated with a drug exhibits a physiological resistance to that medication as a result of tolerance to a pharmacologically similar drug. In other words, there is a decrease in response to one drug due to exposure to another drug. It is observed in treatment with antivirals, antibiotics, analgesics and many other medications. Cross tolerance is particularly frequent amongst users of illicit drugs. For example, users with a high tolerance to the stimulant amphetamine may also exhibit a high tolerance to the structurally similar methamphetamine or other amphetamine like stimulant s. The phenomenon is also observed in cigarette smokers, in whom there is a demonstrably lessened sensitivity to the effects of caffeine . Cross tolerance is also frequent in response to use of hallucinogens . General tolerance to the effects of tryptamines such as psilocybin , may be dramatic in response to repeated use, and this often translates into a tolerance to effects of other drugs such as Mescaline or Dimethyltryptamine DMT . This is also true of benzodiazepines such as Xanax and Klonopin, even opiates as well. DEFAULTSORT Cross Tolerance Category Pharmacology de Kreuztoleranz fr Accoutumance Tol rance crois e pl Tolerancja krzy owa ... more details
Intrusion tolerance is a Fault tolerant design approach to defending information systems against malicious attack. Abandoning the conventional aim of preventing all intrusions, intrusion tolerance instead calls for triggering mechanisms that prevent intrusions from leading to a system security failure. Projects in this area include the MAFTIA project Malicious and Accidental Fault Tolerance for Internet Applications , which developed concepts and prototyped architectures, and the http www.tolerantsystems.org OASIS program, which implemented several intrusion tolerant systems. See also Byzantine fault tolerance External links Article http hdl.handle.net 10455 2988 Intrusion Tolerance Concepts and Design Principles. A Tutorial. by http www.di.fc.ul.pt pjv Paulo Ver ssimo Category Fault tolerance Category Computer security ... more details
Inline date May 2009 Tolerance analysis is the general term for activities related to the study of accumulated variation in mechanical parts and assemblies. Its methods may be used on other types of systems subject to accumulated variation, such as mechanical and electrical systems. Engineers analyze tolerances for the purpose of evaluating geometric dimensioning and tolerancing GD&T . Methods include 2D tolerance stacks, 3D Monte Carlo simulation s, and datum conversions. Tolerance stackups or tolerance stacks are terms used to describe the problem solving process in mechanical engineering of calculating the effects of the accumulated variation that is allowed by specified dimensions and Engineering tolerance tolerances . Typically these dimensions and tolerances are specified on an engineering drawing. Arithmetic tolerance stackups use the worst case maximum or minimum values of dimensions and tolerances to calculate the maximum and minimum distance clearance or interference between two features or parts. Statistical tolerance stackups evaluate the maximum and minimum values based on the absolute ... engineering standard covers the process or format of tolerance analysis and stackups, these are essential components of good product design . Tolerance stackups should be used as part of the mechanical ... a tolerance stackup depend somewhat upon the engineering dimensioning and tolerancing standards that are referenced .... Tolerance stackups serve engineers by helping them study dimensional relationships within ... proposals. helping designers produce complete drawings. Concerns with tolerance stackups A safety ... of the stack what happens if the design conditions are not met . See also Tolerance coning References cite journal title Automation of Linear Tolerance Charts and Extension to Statistical Tolerance ... Alex Krulikowski 1994 , Tolerance Stacks using GD&T , ISBN 0 924520 05 1 Bryan R. Fischer 2004 , Mechanical Tolerance Stackup and Analysis , ISBN 0 8247 5379 8 Category Mechanical engineering ... more details
Unreferenced date December 2009 Orphan date February 2009 Position Tolerance is a Geometric Dimensioning and Tolerancing GD&T location control used on engineering drawings to specify desired location as well as allowed non conformity to the position of a feature on a part. Position tolerance must only be applied to feature of size features of size , which necessitates that the feature have at least two opposable points. See also Circle DEFAULTSORT Position Tolerance Category Technical drawing ... more details
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