Inflammation IV
Transcription
Inflammation IV
General Pathology Basic Principles of Cellular and Organ Pathology Inflammation - IV CD3 Immune Disorders Diseases Jaroslava Dušková Inst. Pathol. ,1st Med. Faculty, Charles Univ. Prague Immune Disorders Diseases – table of contents Immune Deficiency Diseases primary – inborn NG disorders thymic hypoplasia T-lymphopenia Bruton´s agamaglobulinemia isolated IgA deficiency complement deficiency secondary – acquired Increased – Hypersensitivity – Allergy HIV-AIDS neutropenia leukemia vascular - DM, ischemia – atherosclerosis malnutrition aging I. II. III. IV. anaphylactic cytotoxic immune complexes cell mediated (delayed) Tcell mediated cytotoxicity Self oriented – Autoimmune Diseases Autoimmunity – definition, function Mechanisms of autoimmune reaction prevention Autoimmune diseases – representatives systemic organ related Defenses Against Infection – 1/3 Surface barriers: skin, conjunctiva, mucous membranes mechanical removal: shedding, tears, mucus, ciliary action, coughing, salivation, swallowing, urination, defecation normal bacterial flora chemical inhibitors: gastric acid, lactic acid, fatty acids,bile salts.. antimicrobial substances: lysozym, secretory IgA Defenses Against Infection – 2/3 Nonspecific resistance factors Inflammation- soluble factors fever, interferon, complement, lysozyme, C-reactive protein, lactoferrin, α1- antitrypsin clotting system –Hageman fc. (XII) complement system: chemotactic fc, anaphylatoxins kinin system: bradykinin Inflammation- phagocytes circulating: neutrophils, eosinophils, monocytes, macrophages fixed: alveoli, spleen, liver, bone marow, brain Defenses Against Infection – 3/3 Immune response humoral: B-cells, plasma cells, immunoglobulins cell-mediated: T-cells, lymphokins Immune Deficiency Diseases Primary – inborn - genetically determined NG disorders Thymic hypoplasia – Di George syndrome T-lymphopenia Bruton´s agamaglobulinemia (X-linked, BTK) Isolated IgA deficiency Complement deficiency Secondary – acquired HIV-AIDS Neutropenia Leukemia - DM, ischemia – atherosclerosis Malnutrition Aging Vascular Immune Deficiency Diseases - clinical manifestations Primary – inborn - genetically determined NG disorders Thymic hypoplasia – Di George syndrome T-lymphopenia Bruton´s agamaglobulinemia (X-linked, BTK) Isolated IgA deficiency Complement deficiency Secondary – acquired Increased susceptibility to • infections • tumours HIV-AIDS Neutropenia Leukemia Vascular - DM, ischemia – atherosclerosis Malnutrition Aging Hypersensitivity - types I. anaphylactic astma II. cytotoxic III. immune complexes SLE, GN, Ag+AB+C IV. cell mediated (delayed) tbc, contact erythroblastosis IgE IgG, IgM dermatitis – T-cell mediated cytotoxicity Hypersensitivity - types I. anaphylactic (astma) Th2 activationproduction of IgE – degranulation of mast cells – vasoactive amins- hypersensitivity reaction Hypersensitivity - types II. cytotoxic erythroblastosis, pemphigus vulgaris, myasthenia gravis, DM I, pernicious anemia… IgG, IgM target antigens on cell surface destruction of cells, derangement of function Hypersensitivity - types III. immune complexes SLE, GN, polyarteritis nodosa… Ag+AB+C depositions in blood vesels vascular complications Hypersensitivity - types IV. T -cell mediated (delayed) tbc, contact dermatitis, RA, MS, DM I, HT, cytokine mediatd inflammation - CD4 T cells – delayed response, macrophages ar the main effectors direct cytolysis CD8 T cells Contact stomatitis unknown allergen Autoimmunity lack of self-tolerance Autoimmunity constant activity in organogenesis regeneration metalaxia Autoimmune Diseases Def.: loss of self-tolerance resulting into damage of organ /tissue Self x non-self Mechanisms Preventing Antiself Reactivity: clonal deletion - thymus clonal anergy – APC „off signal“ peripheral suppresion – Ts CD8+ Protection from protectors…. Activation of Apoptosis Inflammation – autoimmune Systemic autoimmune diseases DISEASE SLE RA Sjögren dis. Syst. sclerodermia Dermato–polymyositis Prim. vasc. syndromes ANTIBODY ANA, ENA collag. II, Fc –Ig (rheum. factor) ANA,ENA ENA (Scl–70) ENA (Jo–1) ANCA SLE - Lupus erytematodes disseminatus Lupus erytematodes disseminatus VASCULITIS skin – butterfly rash, discoid erythema mucose membranes ulcers heart- Libman-Sacks endocarditis arthritis serositis hemopoietic disorders – hemolytic anemia, leuco-lympho- thrombocyto- penia kidney – glomerulonephritis CNS – seizures, psychosis (vascular etiology?) SLE SLE. Papillary necroses – vasculitis (Bilddatenbank Basel) SLE GN . Man 29. (Bilddatenbank Basel) Rheumatoid arthritis Rheumatoid arthritis - polyarthritis progressiva primaria chronica adult women mainly small joints morning stiffness dysfigering, pain, ankylosis + tendovaginitis, iridocyclitis, vasculitis, lung fibrosis serum rheumatoid factor – IgM x Fc IgG – immunocomplexes complication (potentially killing) Amyloidosis renis Amyloid Diagnosis Immunohistochemistry Sjögren´s syndrome Def.: a group of autoimmune conditions characterized by T-lymphocyte mediated sialo- & dacryoadenitis ---------women predilection sicca (dry) syndrome Sjögren´s syndrome Classification: primary: keratoconjunctivitis sicca, sialoadenitis, no co-existing systemic a-i diseases secondary: accompanying rheumatoid arthritis, SLE, dermatomyositis…. T.E.Daniels, Th.B. Aufdemorte, J.S.Greenspan: Histopathology of Sjögren´s syndrome. s. 41-52, in: N. Talal, H.M. Moutsopoulos, S.S.Kassan: Sjögren´s syndrome. Clinical and immunological aspects. Springer Vrlg, Berlin, Heidelberg, New York, London, Paris, Tokyo 1987, 299ss. Focus Score Morphometric representation of focally accented chronic sialoadenitis – agregate of 50 and more lymphocytes (defined 1968) focus Sicca syndrome meandr scaning FS ≥ 1 Focus Score morphometry result table Lichen planus fibrinogen Ab in BM Mucous Membrane Pemphigoid IgG, C3 along BM Pemphigus vulgaris IgG Erythema multiforme IgM,C3 deep dermis - perivascular J.P.Sapp et al. Contemporary maxillofacial pathology. 2nd ed. Mosby 2004 Inflammation – autoimmune: Organ autoimmune diseases Skin (& mucous membranes) ANTIBODY DISEASE intercel. epith. matrix pemphigus (desmoglein 3) basal membrane of epidermis pemphigoid Pemphigus vulgaris Pemphigus vulgaris Systemic Sclerosis SS Sclerodermia SS Sclerodermia Inflammation – autoimmune Organ autoimmune diseases – GIT ANTIBODY against DISEASE mitochondrie primary billiary cirrhosis membr. hct., cytosol CAH gliadin gluten enteropathy Celiac Sprue man 27 yrs 4 pieces from D3 announced 3 pieces diam. 1-2mm found clin. dg. susp. celiakia, diff. dg. lambliasis CD 3 CD 3 CD 3 Histopathology Report mild shortening & widening of villi intraepit. lymphocytes > 40/100 enterocytes lamblie not found Conclusion: histopathology changes supporting clinical dg. suggested - celiac sprue - type 3a of Marsh´ - Oberhuber´s classification Marks, DJB, Harbord, MWN, Mac Allister R. et al.: Impotent immune System: An Underlying Problem in Crohn´s Disease. Lancet 2006, 367, 668-78 in patients with Crohn´s an impaired acute inflammatory response – 79% reduction in the number of neutrophils and interleukin 8 in ulcerative colitis initiation of inflammation normal, resolution delayed m. Crohn m. Crohn Inflammation – autoimmune Organ autoimmune diseases – endocrine ANTIBODY DISEASE TGB, microsomes pancreas cells insulin ins. receptors adrenal microsomes TSH rec. GB, HT DM I I–res. DM I–res. DM Adison dis. GB Thyroid m.G-B Hashimoto Thyroiditis Hashimoto Thyroiditis Epinephritis chronica Inflammation – autoimmune Organ autoimmune diseases – CNS ANTIBODY DISEASE acetylcholin rec. myasthenia gravis disseminated sclerosis basic myelin protein Sclerosis cerebrospinalis multiplex disseminata – multiple sclerosis - MS chronic autoimmune demyelinating encephalitis Sclerosis cerebrospinalis multiplex disseminata - virus infection influence (morbilli, herpes, EB) …bacteria?... Pathogenesis interaction of the macroorganism and virus – limited antibody production (only 10-20% produced viruses are virulent) virus mutation & immunosupresion (age, pregnancy, stress, other diseases….) Sclerosis cerebrospinalis multiplex disseminata - virusinfluence infection influence 2. MS – viral (2) Pathogenesis infection of endothelia – microangiitis blood-brain- barrier disorder serum & CSF CD4, CD8 (miror image to AIDS) Pons Varoli – lux. modř Sclerosis cerebrospinalis multiplex disseminata immobility/spasticity anesthesia sight disorders incontinence cognitive dysfunction pain depresssion Immune Disorders Diseases Morphology alteration up to necrosis NG + lymphoplasmocellular infiltration fibrosis Prognosis important in terms of both morbidity and mortality – possible lethal outcome Rejection of Transplants - pathways Allografts – MHC molecules recognized mainly on the graft DCs: direct recognition by the host CD8+T cells – endothelial damage - acute fibrinoid necrosis- thrombosisischemia indirect recognition by the host CD4+ T cells – AB mediated Rejection of Transplants - effectors hyperacute - hours – pre-existing ABs acute – days to weeks CD4+ and CD8+ T cells chronic – months – productive endarteritis – T cell secretion of cytokins acute chronic Graft Versus Host Disease - GVHD cause - immunocompetent donor T cells in: hematopoietic stem cell transplantation organs rich in lymphoid cells – liver non-irradiated blood transfusion manifestation: acute – days to weeks – epithelial necroses – GIT, skin – potentially lethal chronic – months - syst. sclerosis - like skin lesions, autoimmune disorders