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Reproductive Immunology

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Presentation on theme: "Reproductive Immunology"— Presentation transcript:

1 Reproductive Immunology
Prof. MUDr. Zdenka Ulcova-Gallova, DrSc. Genetics –Pilsen and Department of Gynecology and Obstetrics of Charles University, Pilsen, Czech Republic

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3 Screening for reproductive immunology (RI)
Sperm antibodies Zona pellucida antibodies Panel of various antiphospholipid antibodies (eight) Embryocytotoxic cytokines Intraacrosomal proteins Endometrial Ab Antitrophoblast antibodies aTSH, aTPO HLA-I a HLA II HLA-G AMH Inhibin (A, B) Local CD56+/CD16+ Detailed immunological profile according to basic dg.(CD56/CD16)

4 RI Men Women Both

5 Immunological origin in unknown/known cause of infertility
Repeated spontaneous abortion or missed abortion Repeated IVF failure Patients with autoimmune or oncological diseases Endometriosis, preeclampsia, PCO, POF, HELLP….. Andrological factor

6 Zona pellucida antibodies
Sperm antibodies

7 Anti-sperm antibodies (ASA)
History Incidence in men, women Methods of measurement „Treatment“

8 Rich history of ASA Animals: by Landsteiner and Metchnikoff Metalnikoff 1932 Baskin Human studies:Rumke 1954, Bronson, Shulman (1991), Dondero, Hendry, Fjallbrandt, Hjort, Isojima, Mori, Koyama,Kutteh, Moghissi, Nakov, Bratanov, Lenzi, Mathur, Ingerslev, Clark,Mettler, Ulcova-Gallova (1985), Bohring, etc. Multicentric study , comparison of various tests for detection of ASA

9 Origin of ASA in men Damage of blood testis-barrier
Genetic predisposition HLA A-28, B-22

10 Origin of ASA in women Ascendent immunisation
(but other way is possible)

11 Sperm antibodies inhibit from:
Sperm transport Bloking ZP penetration Sperm capacitation Acrosomal reaction Early fertilization Postfertilization effect

12 Examination Serum Semen OCM Peritoneal fluid Folicular fluid

13 Detection of free ASA Gelatin agglutination tests (GAT-Kibrick)
Tube-Slide Agglutination test Tray agglutination test (TAT-Friberg) Sperm-immobilization test(Isojima) Mixed reaction anti-immunoglobulin tests (MAR-test) Immunobead technique ELISA (poor correlation with infertility) RIA

14 ASA IgG IgM IgA, s IgA (i IgE)

15 ASA and significance Sperm-agglutinating Sperm-immobilising
Sperm-cytotoxic

16 Prof. Isojima S. Publication Science AJRI,

17 Kibrick test Shulman,1985

18 Capillary test (Fjallebrandt)
Shulman,1985

19 Sperm-agglutination head to head -TAT

20 Direct /indirect MAR test or immunobead test

21 OCM The Miller-Kurzrok Test) The Sperm Cervical Mucus Contact Test
Kremer test

22 Kremer test

23 Antizonal antibodies (aZP)
Block sperm adherention and sperm penetration into oocyte Postfertilization effect

24 Zona pellucida Animal models
(Oikawa, Yanagimachi, Kamada, Mori, Aitken, Hasegawa, Koyama, Isojima, Inoue, Yamasaki, Clark, et al.) Importance of ZP ZP epitopes

25 ZP Human ZP X porcine ZP (Sacco, 1977)

26 AJRI Ulcova-Gallova Z., Mardesic T.: Does In Vitro Fertilization ( IVF ) Influence the Levels of Sperm and Zona Pellucida ( ZP ) Antibodies in Infertile Women? Amer. J. Reprod. Immunol. 1996, 36, p Very important!!!

27 ZP antigens Porcine oocytes
ZP1 –ZP4 epitopes (60 kDa, Hasegawa et al. 1995) Mice –ZP 1- ZP3 Monoclonal antibodies

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29 Koyama, Hasegawa, Mochida, Colongos, 2005-2015
Induction of follicular dysfunction by ZP E.g. ↑aZP in POF Et al.

30 Examination of aZP antibodies
Passive haemmagglutination tests ELISA

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33 Antiphospholipid antibodies
Interference with membrane phospholipid 1. Prae-conceptionally 2 .Post-conceptionally

34 APA (IgG, IgA, IgM) Ph-L-serine ph-L-glycerol ph-L-inositol
ph-ethanolamine -annexin V ph-acid cardiolipin b2-GP

35 Criteria of APA sy - are not sufficiant for infertility In general:
aPls Thrombosis (thrombocytopenie?) Failure in reproduction

36 For instance

37 Analysis of 2965 infertile women (Ulcova-Gallova et al
Analysis of 2965 infertile women (Ulcova-Gallova et al.AJRI, 2005 Aug;54(2):112-7.) P < 0,001

38 For instance Immuno-histological detection a-annexin V Ab

39 Červeně: apoptotic.buňky
Zeleně: mrtvé buňky

40 Detection of intracrosomal enzymes
IF (monoclonal antibodies)

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42 Immunological tolerance
Mother X foetus

43 Dr. Peter Medawar a prof.Milan Hasek

44 Nidation and implantation

45 Mother -immunotolerance
Barier of decidua Blockade antibodies Immunotolerance to foetus antigens Pregnancy specific proteins (Bohn p.) HCG, E, P Anti-idiotype antibodies Immunosuppressive cells (spec., non-sp.) Other mechan.

46 Foetus -immunotolerance
Throphoblast bariere of placenta Sialomucinglycocalix layer Low expression of MHC Damping elements:e.g. α FP, PGE, … C system

47 Ab -detection Anti-foetus Anti-placental Anti-paternal

48 Development of a particular immune response which enhances embryo acceptance
? Th2 Th2 RESPONSE ΑΝΤΙΓΟΝΑ ΤΡΟΦΟΒΛΑΣΤΗΣ HLA-G; CD46; R80k; CD1; ; «ÔÇ2» Recognition by decidual cells Trophoblast antigens HLA-G? CD46? R80k? CD1? γδTcells? FACILITATION REACTION IMMUNOTROPHISM growth, maturation of the placenta Blocking antibodies BLOCKAGE of cytotoxic reactions Immunoabsorbent placenta Trophoblast resistant Local hormone-dependent immunosuppression to NK cell lysis

49 Rh-incompatibility (ery-C,D,E,c,d,e)
Rh negative mother Rh positive foetus Treatment: anti D (to 72 hours) ABO –incomp.very rare Keely, Lewin etc.

50 CAVE! - foetus erytroblastosis 1. Anaemia neonatorum
2. Icterus neonati gravis 3. Hydrops fetus universalis

51 15-20% of infertile couple Clear immunological cause of infertility or combine with other causes

52 FERTILITY and RI biologic aging of the hypothalamic-pituitary-ovarian axis in elder women →changes in endocrinology, immunity, psychology Tests in RI withe reason

53 Immunological screening for reproductive failure
Sperm antibodies Zona pellucida antibodies Panel of various antiphospholipid antibodies (eight) Embryocytotoxic cytokines Intraacrosomal proteins Endometrial Ab Inhibin (A, B) Antitrophoblast antibodies aTSH, aTPO HLA-I a HLA II HLA-G AMH Local CD56+/CD16+ Detailed immunological profile according to basic dg.(CD56/CD16)

54 Other future in RI Antigens of Sperm, ZP, beta HCG etc. - contraceptive vaccine Ways, means of influencing of fertility


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