Annual reproductive phase-related profile of sex steroids and their carrier, SHBG, in the Indian major carp, Labeo rohita

Suresh, D.V.N.S.; Baile, V. V.; Rao, P. D. Prasada

doi:10.1016/j.ygcen.2008.08.004

Cited by 14 publications

(6 citation statements)

References 32 publications

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“…Similarly, a peak in 17beta-estradiol plasma concentrations associated with the synthesis of vitellogenic proteins (vitellogenin) has been described in many other teleosts [2]. This result coincided with other studies such as study on Common carp [1], Acipenser Persicus [30], Rutilus firrsi kutum [31], Labeo rohita [32]. In these studies, levels of estradiol had difference during year and its peak was before spawning.…”

Section: Discussionsupporting

confidence: 86%

“…In female fish, levels of maturation-inducing steroids (usually progesterone) are elevated during final oocyte maturation and ovulation [35]. Progesterone increases in a short period, can indicate a limited role of this hormone on ovarian function and also indirectly involved in the final maturation ovary by hydroxyprogesterone [32]. Levels of progesterone increased with progression of gonadic stage in Huso huso [18].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal Fluctuations of Sex Steroid Hormones in Indian Major Carp Catla Catla in Khouzestan, Iran

Sehafii¹,

Khodadadi²

2014

J Environ Anal Toxicol

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Seasonal Fluctuations of Sex Steroid Hormones in Indian Major Carp Catla Catla in Khouzestan, Iran

Sehafii¹,

Khodadadi²

2014

J Environ Anal Toxicol

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“…Pavlidis et al (2000) recorded high peak in 17 beta-estradiol plasma concentrations associated with the synthesis of vitellogenic proteins (vitellogenin) in many other teleosts. This result coincided with other studies on Acipenser Persicus (Hosseinzade et al, 2012), Rutilus firrsi kutum (Heidari et al, 2018), Labeo rohita (Suresh et al, 2008). In these studies, levels of E 2 differed during the year and its peak was before spawning.…”

Section: Discussionsupporting

confidence: 92%

Comparison of some metabolic and sex hormones in selected vertebrates in different seasons

Ayad

El-orbany

Hydar

et al. 2020

African Journal of Biological Sciences

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Different environmental factors affect animal physiological status. Day length and temperature are the two main factors that have been proved to cause changes in different hormones. The current study aimed to compare seasonal changes of some hormones such as testosterone (T), estradiol-17-β (E 2) and thyroid hormones (T 4 , thyroxine; and T 3, triiodothyronine) in selected vertebrates (amphibians, fish and mammals). These hormones were assayed by enzyme-linked immunosorbent assay (ELISA). The present results indicated that; T 3 had the highest concentration in both sexes of amphibians during winter and the lowest one was found in the investigated mammals of both sexes during summer and autumn. Regarding, T 4 also showed the highest concentration in both sexes of amphibians during winter and the lowest one was recorded in male mammals during summer. In relation to E 2 , in females; the highest and detectable concentration was observed in fishes during summer and the lowest one was found in mammals during winter. On the other hand, in males, its highest concentration was found in birds during spring, and the lowest one was recorded in amphibians during winter. Testosterone showed the highest concentration in female birds during summer, while the lowest one was recorded in amphibians during summer. In males, the highest T level was observed in fishes during summer, while the lowest one was found in amphibians in the same season. According to the results, significant changes in levels of steroid hormones, as well as thyroids in the selected animals from different classes were closely correlated to the length of the day and seasons.

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“…Shbg-type binding fluctuated in blood in parallel to sex steroids levels in spotted weakfish (Laidley and Thomas, 1997) and Indian major carp, Labeo rohita (Suresh et al, 2008) but not in common carp (Chang and Chen, 1990) and brown trout, Salmo trutta (Pottinger, 1988). A direct relationship may be due to the stimulation of liver Shbg synthesis by E2 (Foucher et al, 1991).…”

Section: Protective and Transport Functions Of Shbgmentioning

confidence: 97%

Diversity and biological significance of sex hormone-binding globulin in fish, an evolutionary perspective

Bobe

Guiguen

Fostier

2010

Molecular and Cellular Endocrinology

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In fish, two different genes, shbga and shbgb, exist that encode for very different proteins. Shbga is the ortholog of mammalian Shbg and was found in all investigated teleosts. In contrast, Shbgb is highly divergent and appears to be a salmonid-specific protein. Here, we review existing data on fish Shbga and Shbgb that have been obtained in chondrichthyes and osteichtyes. Even though other significant expression sites exist, existing data indicate that Shbga is mainly expressed in liver and subsequently secreted into the blood as a homodimer. In contrast, Shbgb is mainly expressed in the ovary, probably secreted as a monomer, and could contribute to the regulation of local steroid action. Binding studies indicate a specialization of circulating Shbg during evolution towards the preferential binding of estradiol and testosterone in teleosts. In contrast, specific fish steroids such as 11-oxo-androgens and oocyte maturation-inducing steroids that are crucial for reproduction are poorly bound by either form of Shbg.

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Annual reproductive phase-related profile of sex steroids and their carrier, SHBG, in the Indian major carp, Labeo rohita

Cited by 14 publications

References 32 publications

Seasonal Fluctuations of Sex Steroid Hormones in Indian Major Carp Catla Catla in Khouzestan, Iran

Seasonal Fluctuations of Sex Steroid Hormones in Indian Major Carp Catla Catla in Khouzestan, Iran

Comparison of some metabolic and sex hormones in selected vertebrates in different seasons

Diversity and biological significance of sex hormone-binding globulin in fish, an evolutionary perspective

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