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Λυρατζόπουλος Εμμανουήλ Βιολόγος 1 ΕΡΓΑΣΙΑ 4 η Θέμα 1 Ποιες από τις παρακάτω προτάσεις είναι σωστές; Οι λάθος να αναδιατυπωθούν στο σωστό. Να αναλυθούν συνοπτικά οι έννοιες των προτάσεων. Α. Η προλακτίνη παράγεται στο φλοιό των επινεφριδίων και ρυθμίζεται από την προλακτινοτρόπο ορμόνη της αδενοπόφυσης. ΛΑΘΟΣ Η προλακτίνη είναι ορμόνη (πρωτεΐνη) που παράγεται στα λακτοτρόφα κύτταρα της πρόσθιας υπόφυσης (αδενοϋπόφυση). Η έκκριση της βρίσκεται κάτω από τον έλεγχο του υποθαλάμου. Ο υποθάλαμος και η υπόφυση είναι τμήματα του εγκεφάλου, σε αντίθεση με τα επινεφρίδια που βρίσκονται στο οπισθοπεριτοναϊκό χώρο, στον άνω πόλο του σύστοιχου νεφρού. Εικόνα1. Η προλακτίνη (PRL) είναι μία ορμόνη (πρωτεΐνη) που στον άνθρωπο κωδικοποιείται από το γονίδιο PRL που βρίσκεται στο χρωμόσωμα 6. Παρουσιάζει παρόμοια χημική δομή με την αυξητική ορμόνη (GH) και την πλακουντική γαλακτογόνο ορμόνη (hPL). Ανακαλύφθηκε από τον Oscar Riddle και στη συνέχεια συνέβαλε στη μελέτη της και ο Henry Friesen. Αν και σήμερα είναι κυρίως γνωστή για τον ρόλο της στην γαλουχία, η προλακτίνη υπάρχει και σε άλλα σπονδυλωτά, όπως τα ψάρια, όπου από τις πιο σημαντικές της λειτουργίες είναι ο έλεγχος του νερού και η ισορροπία των αλάτων στον οργανισμό. Η προλακτίνη δρα με τρόπο παρόμοιο με μία κυτταροκίνη και ως ένας σημαντικός ρυθμιστής του ανοσοποιητικού συστήματος.

λυρατζοπουλος προλακτίνη - μεμβρανική μεταφορά - αναβολικές ουσίες - εξαρτησιογόνες ουσίες - καρδιακές

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1. 1 4 1 ; . . . . () (). . , , . 1. (PRL) () PRL 6. (GH) (hPL). Oscar Riddle Henry Friesen. , , , . . 2. 2 , ( ). , . 300 PRL , , , , , , . , . . . , . (TRH) . , , PIF (Prolactin Inhibiting Factor). , . . , . stress. 3. , . . 2. 3. 3 , . (.. ), , . , (.. ) , . (FSH LH) , . . , , (). , , ( , , , ). 1: . 4. 4 2: . 5. 5 3: . 6. 6 . . - , . : . . : , , . . 7. 7 . . , . - , , . , , . . . , , . . . 8. 8 (). (, , ) (). 4, 5, 6. 4: . 9. 9 5: . 6: . 10. 10 ( ). . 7. 7: . 1. . ( , ) . , . 2. . ( ), ) , ) . 2) - . , . 11. 11 2) () ( ) . GLUT2. 8, 9, 10. , . H , , . , . , . H ( ), . 1. , , . 2. : , , . . 3. : . , , . - . 12. 12 4. M . , , . . 5. . . , . , , . H , , . , , , . . , , Vmax . Km . 11, 12. . 13. 13 8: . . 9: . 14. 14 10: GLUT, . . 6- . 11: . 15. 15 12: . . , . , . . , . 14. . . Na+-K+ ( Na+-K+ ) , Na+ K+. 16. 16 , a+ + . K+ 10 20 , Na+. a+- + : + + . a+-+ a+-+-. a+- +- . - , 1 2. 1, a+ + . 2, + a+. , a+-+- 1 2 + a+ , . K a+-+- , . H . 15, 16. . 13. . , . 17. 17 , a+ a+-+- . a+ . , , a+, . , . , a+. 13: . Na+, . 18. 18 14: . . 15: Na+-K+ 19. 19 16: Na+ - K+. Molecular Biology of the Cell. 4th edition. Alberts B, Johnson A, Lewis J, et al. New York: Garland Science; 2002. 17: . 20. 20 1. . ( ). GLUT1. valinomycin . 2. . (). ( ) . . - Na+ () H+. 3. . "ping pong" . adenine nucleotide translocase 1:1 ADP ATP . ATP , (Na+, K+)- ATPase, . (H+, K+)-ATPase, H+ K+. Ca++-ATPase, Ca++ +. 21. 21 1. . 2. ATP- , ATP. 3. , , . . . () 12 . 75 (Asp75). Phe72 . (Ala145 Val148) van der Waals . 22. 22 2 , . . - (metabolism): , . 1 = + (anabolism): . (catabolism): , , ( ATP) / . , . . 23. 23 1: . [1] & doping 1. (AAS = androgen anabolic steroids) 2. 3. 4. (EPO) 5. (GH) 6. 7. 8. ACTH, 9. 10. 11. 12. , Selective androgen receptor modulators (SARMs) 24. 24 , , , , , , , . ( ). [2] (95% ) Leydig . , , (DHEA) (DHT). 2: 5- 5- DHT, AR . http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2439524/ 25. 25 5- 5. . 2. [3] 5-, . [4] . , , . 3 10 mg , 60 . , 1889, Charles-douard Brown-Squard ( 3) , " " (rejuvenating elixir), . (1817-1894) [5] 3: Charles-douard Brown-Squard 26. 26 1927, Fred Koch Lemuel McGee 20 mg 20 . . , Organon Gyula David, Dingemanse, Freud Laqueur. 1935, [6] " 'O ()", "testicle" (), "" "". , , Ruzicka Wettstein 1935. [7, 8, 9] : () (.. , , ) () , , , . , , , . 4 . 27. 27 4: . [10] () . . , , . , . , . , , , . "stacking" ( "") . 28. 28 , (relaxation) . ( bodybuilding), . ( ) , , " " . 5%, bodybuilding 50%. [11, 12, 13] , . . 2 . , . , nandrolone, stanozolol methandienone. . 29. 29 5: . 6: . [14] 30. 30 . methandienone, methyltestosterone, oxandrolone and stanozolol. nandrolone, mesterolone oxymetholone. 17 . . [15] . ', , : () , () , () , () , () , () . 1950 . , . , , (anabolic/androgenic ratio). . 31. 31 C-17 . , ( ), . , . [16] ' C-19 (.. , ). , C-17 , . C-1 C-2 . [17] . [18] (): 5- (5-androstane) 5- (5-estrane). (A-D) C-18 C-19. C-19. . / . "" "", "" "". ', "", C-5 "". 7. 32. 32 7: . : () , () (recovery time), , . , . , . -"" (steroid receptors) . , (androgen receptors AR). -, , DNA. . (membrane-bound sex hormone-binding globulin receptor), tyrosine kinase c-SRC. [19, 20, 21] 33. 33 8: . [22] . DNA zinc- fingers' ( ). [23] Hsp90 p23 ( ) TPR (co-chaperones utilizing tetratricopeptide repeat). [24] , Mr 288 , Hsp 90 . [25, 26] 34. 34 , : nandrolone>methenolone>testosterone>mesterolone. [27] . , (Dianabol) , (Anavar), . 9 9: dianabol anavar. 35. 35 . , , oxymetholone oxandrolone, AIDS, . [28, 29, 30] trestolone , oxandrolone . [31, 32] 1996 10 600 mg, , . [33] . [34] . [35] . [36] (enantanate) . [37] libido . [38] . [39] 36. 36 (AAS) 10 50 . . : , . , , , , , , , . 10 : , , , , (), , , , , , . : , , ( ). : , , , , , , , , LDL-. 37. 37 : , ( HDL/LDL), , , , ACTH, LH FSH, . : , , , . 11 ' : ( ), : , , , , , , . , , , , . AAS , . , AAS . , , . 38. 38 : 1) ( ) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18) 19) 20) , , . 39. 39 : , . [40-60] , bodybuilders , , . , . 30 . . [61] 40. 40 10. 30 . [62] 11: . 41. 41 Velluz, Nommne, Bucourt Mathieu 1963. o . ( ) , . 12 , . , (bodybuilding) ( ) . [63] 12:T (17---4,9,11--3-) . , (bodybuilding) , . 42. 42 . 2-. , . , , . . . , . SARMs - AR . [64, 65] (EPO) (85%) (15%): EPO . . , , . [66, 67] (hGH) , . GH . O IGF -1 , GH. 43. 43 GH, , IGF -1 . IGF -1 GH , GH . . , . , , . , , , , . . . , GH . GH 1980. Ben Johnson, GH . [68] (LH) (hCG). LH , . (GnRH) LH. (hCG) . hCG ( ). [69] 44. 44 - Langerhans . , . - . [70] ( , ACTH) . , (CRH), ACTH. [71] : , 2-, , , , , , . , , . , , , , . SARMs : : , , : 1 2 . 45. 45 : [72] 46. 46 1. Alberts B et al. . 1999 . 2. Mooradian AD, Morley JE, Korenman SG. Biological actions of androgens. Endocr Rev. 1987;8:128. 3. Zitzmann M, Nieschlag E. Androgens and bone metabolism Testosterone 2004. 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