SHBG Immunoreactivity in male Labeo rohita.

Authors

  • Suresh V.N.S. Davuluri Department of Zoology, Dr Ambedkar College, Deekshabhoomi, Nagpur 440010, Maharashtra, India.

Keywords:

SHBG, androgens, immunoreactivity, testes, Labeo rohita

Abstract

SHBG acts as the main delivery protein for sex steroids within the blood of numerous mammals, different vertebrates, and fish varieties. Made chiefly by the liver, circulating SHBG manages how available its attached steroid hormones are and how quickly they are cleared metabolically. Nevertheless, in mammals, the SHBG gene is also active in various tissues outside the liver, suggesting SHBG might have functions separate from the bloodstream. Among aquatic animals, the particular way SHBG attaches to steroids is quite unlike that in mammals, since certain fish possess SHBG that binds androgens with greater affinity than oestrogens. This current research examined where the SHBG molecule is located in this specific vertebrate through immunohistochemistry. Precisely, we aimed to pinpoint the cellular location of SHBG within mature male Indian major carp (Labeo rohita). The results we have now suggest that the liver creates SHBG mainly when fish enter their reproductive period. This aligns with a possible function in assisting the release of steroids through bile. Since steroids are gradually used up and gone by the height of gonad development, the need for SHBG as a carrier protein might lessen, thus affecting how much steroid is present in the plasma or other tissue amounts.

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References

1. Borg B (1994) Androgens in teleost fishes. Comp Biochem Physiol C 109(3):219-245

2. Callard G, Mak P (1988) Characteristics and stage-dependent distribution of a novel steroid binding protein in the testis of Squalus acanthias. Steroids 52(4):359-360

3. Callard GV, Tchoudakova AV, Kishida M, Wood E (2001) Differential tissue distribution, developmental programming, estrogen regulation and promoter characteristics of Cyp19 genes in teleost fish. J Steroid Biochem Mol Biol 79(1-5):305-314

4. Foucher JL, Le Bail PY, Le Gac F (1992) Influence of hypophysectomy, castration, fasting, and spermiation on SBP concentration in male rainbow trout (Oncorhynchus mykiss). Gen Comp Endocrinol 85(1):101-110

5. Hammond GL (1995) Potential functions of plasma steroid-binding proteins. Trends Endocrinol Metab 6(9-10):298-304

6. Hammond GL, Bocchinfuso WP (1995) Sex hormone-binding globulin/androgen-binding protein: steroid-binding and dimerization domains. J Steroid Biochem Mol Biol 53(1-6):543-552

7. Hammond GL, Lähteenmäki PLA (1983) A versatile method for the determination of serum cortisol binding globulin and sex hormone binding globulin binding capacities. Clin Chim Acta 132(1):101-110

8. Hobby AC, Geraghty DP, Pankhurst NW (2000a) Differences in binding characteristics of sex steroid binding protein in reproductive and non reproductive female rainbow trout (Oncorhynchus mykiss), black bream (Acanthopagrus butcheri), and greenback flounder (Rhombosolea tapirina). Gen Comp Endocrinol 120(3):249-259

9. Hobby AC, Pankhurst NW, Geraghty DP (2000b) A comparison of sex steroid binding protein (SBP) in four species of teleost fish. Fish Physiol Biochem 23(3):245-256

10. Ikeuchi T, Todo T, Kobayashi T, Nagahama Y (1999) cDNA cloning of a novel androgen receptor subtype. J Biol Chem 274(36):25205-25209

11. Jänne M, Hogeveen KN, Deol HK, Hammond GL (1999) Expression and regulation of human sex hormone-binding globulin transgenes in mice during development. Endocrinology 140(9):4166-4174

12. Joseph DR (1994) Structure, function, and regulation of androgen-binding protein/sex hormone-binding globulin. Vitam Horm 49:197-280

13. Kishida M, Callard GV (2001) Distinct cytochrome P450 aromatase isoforms in Zebrafish (Danio rerio) brain and ovary are differentially programmed and estrogen regulated during early development. Endocrinology 142(2):740-750

14. Kloas W, Schrag B, Ehnes C, Segner H (2000) Binding of xenobiotics to hepatic estrogen receptor and plasma sex steroid binding protein in the teleost fish, the common carp (Cyprinus carpio). Gen Comp Endocrinol 119(3):287-299

15. Laidley CW, Thomas P (1994) Partial characterization of a sex-steroid binding protein in the spotted sea trout (Cynoscion nebulosus). Biol Reprod 51(5):982-992

16. Laidley CW, Thomas P (1997) Changes in plasma sex steroid-binding protein levels associated with ovarian recrudescence in the spotted sea trout (Cynoscion nebulosus). Biol Reprod 56(4):931-937

17. Mak P, Callard GV (1987) A novel steroid-binding protein in the testis of the dogfish Squalus acanthias. Gen Comp Endocrinol 68(1):104-112

18. Milligan SR, Khan O, Nash M (1998) Competitive binding of xenobiotic oestrogens to rat α-fetoprotein and to sex steroid binding proteins in human and rainbow trout (Oncorhynchus mykiss) plasma. Gen Comp Endocrinol 112(1):89-95

19. Ovrevik J, Stenersen J, Nilssen K, Tollefsen KE (2001) Partial characterization of a sex steroid-binding protein in plasma from Arctic char (Salvelinus alpinus L.). Gen Comp Endocrinol 122(1):31-39

20. Pasmanik M, Callard G (1986) Characteristics of a testosterone-estradiol binding globulin (TEBG) in goldfish serum. Biol Reprod 35(4):838-845

21. Pryce-Hobby AC, McMaster ME, Hewitt LM, Van Der Kraak G (2003) The effects of pulp mill effluent on the sex steroid binding protein in white sucker (Catostomus commersoni) and longnose sucker (C. catostomus). Comp Biochem Physiol C 134(2):241-250

22. Selva DM, Hogeveen KN, Seguchi K, Tekpetey F, Hammond GL (2002) A human sex hormone-binding globulin isoform accumulates in the acrosome during spermatogenesis. J Biol Chem 277(47):45291-45298

23. Siiteri PK, Murai JT, Hammond GL, Nisker JA, Raymoure WJ, Kuhn RW (1982) The serum transport of steroid hormones. Recent Prog Horm Res 38:457-510

24. Sperry TS, Thomas P (1999) Characterization of two nuclear androgen receptors in Atlantic croaker: comparison of their biochemical properties and binding specificities. Endocrinology 140(4):1602-1611

25. Sullivan PM, Petrusz P, Szpirer C, Joseph DR (1991) Alternative processing of androgen-binding protein RNA transcripts in fetal liver. J Biol Chem 266(1):143-154

26. Suresh DVNS (2007) Sex-hormone binding globulin and its influence on reproduction in an Indian major carp. PhD Thesis, RTM Nagpur University, Nagpur, India, pp 69-117

27. Suresh DVNS, Baile VV, Rao PP (2008) Annual reproductive phase-related profile of sex steroids and their carrier, SHBG, in the Indian major carp, Labeo rohita. Gen Comp Endocrinol 159(2-3):143-149

28. Suresh DVNS, Bagade RS, Baile VV (2021) Reproductive Phase-related Plasma Proteins in Labeo rohita. Int J Life Sci 9(4):443-448

29. Suresh DVNS, Bagade RS (2022) Partial Characterization of Sex Hormone-Binding Globulin (SHBG) In Labeo rohita. IJR B A T 10(1):111-120

30. Suresh VNS Davuluri (2023) Possible Immunolocalization of Sex-Hormone Binding Globulin (SHBG) in female Labeo rohita. Int J Life Sci (in press)

31. Takeo J, Yamashita S (1999) Two distinct isoforms of cDNA encoding rainbow trout androgen receptors. J Biol Chem 274(9):5674-5680

32. Tollefsen KE (2002) Interaction of estrogen mimics, singly and in combination, with plasma sex steroid-binding proteins in rainbow trout (Oncorhynchus mykiss). Aquat Toxicol 56(3):215-225

33. Tollefsen KE, Meys JF, Frydenlund J, Stenersen J (2002) Environmental estrogens interact with and modulate the properties of plasma sex steroid-binding proteins in juvenile Atlantic salmon (Salmo salar). Mar Environ Res 54(3-5):697-701

34. Van Der Kraak G, Biddiscombe S (1999) Polyunsaturated fatty acids modulate the properties of the sex steroid binding protein in goldfish. Fish Physiol Biochem 20(2):115-123

35. Westerfield M (2000) The zebrafish book: a guide for the laboratory use of zebrafish Danio (Brachydanio) rerio, 4th edn. University of Oregon Press, Eugene, OR

36. Westphal U (1986) Steroid-protein interactions II. Monographs on endocrinology. Springer-Verlag, Berlin, Heidelberg

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Published

2024-12-31

How to Cite

Suresh V.N.S. Davuluri. (2024). SHBG Immunoreactivity in male Labeo rohita. International Journal of Life Sciences, 12(4), 557–563. Retrieved from https://ijlsci.in/ls/index.php/home/article/view/1018