17α-Hydroxyprogesterone induced ovarian growth and vitellogenesis in the freshwater rice field crab Oziotelphusa senex senex

Reddy, P. Ramachandra; Kiranmayi, P.; Kumari, Khushboo; Reddy, P. Sreenivasula

doi:10.1016/j.aquaculture.2005.11.023

Cited by 30 publications

(4 citation statements)

References 29 publications

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“…In the crayfish P. clarkii, both 17PG and 17β-estradiol administered at the end of the prereproductive period increased both GSI and oocyte diameter (Rodríguez et al 2002a). Similar effects have been reported in the crab O. senex senex by Reddy et al (2006) together with an increase in the circulating vitellogenin level. In adult females of N. granulata, either injecting or feeding 17PG increased GSI in the three periods of the reproductive cycle (Zapata et al 2003).…”

Section: Discussionsupporting

confidence: 87%

“…In vivo studies of Cherax albidus by Coccia et al (2010) showed that both estradiol and 17PG produce a higher synthesis of vitellogenin in the hepatopancreas and/or the hemolymph, depending on the reproductive cycle period. A direct effect of 17PG on oocyte growth was seen in vitro, in two crab species: N. granulata (Zapata et al 2003) and Oziotelphusa senex senex (Reddy et al 2006).…”

Section: Introductionmentioning

confidence: 95%

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Induction of vitellogenesis by 17-hydroxyprogesterone and methyl farnesoate during post-reproductive period, in the estuarine crabNeohelice granulata

Medesani

Ferré

Canosa

et al. 2015

Invertebrate Reproduction & Development

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Adult female crabs (Neohelice granulata) were treated during the post-reproductive period with both 17-hydroxyprogesterone (17PG) and methyl farnesoate (MF). During the 4-week in vivo assay, animals were fed hormone-enriched (17PG or MF) pellets twice a week, at a dose of 2 nmol/g of body weight. Additionally, at the middle of the in vivo experiment, ovarian explants were incubated in vitro with each hormone at a concentration of 15 μM for 24 h. At the end of the in vivo assay, both the gonadosomatic index and the vitellogenic protein content (Vg) of crabs treated with either 17PG or MF were significantly higher (p < 0.05) than the values of the concurrent controls. In addition, the hemolymphatic vitellogenin level of both hormonally treated groups was higher. At the end of the in vitro assay, ovary explants incubated with 17PG had a significantly higher (p < 0.05) protein synthesis and content of Vg proteins than controls. Ovary explants incubated with MF had similar levels to controls (p > 0.05). The involvement of these hormones in the regulation of ovarian growth during the reproductive cycle of N. granulata is discussed.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 95%

Induction of vitellogenesis by 17-hydroxyprogesterone and methyl farnesoate during post-reproductive period, in the estuarine crabNeohelice granulata

Medesani

Ferré

Canosa

et al. 2015

Invertebrate Reproduction & Development

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“…In contrast, feeding of artificial diets that lack steroid hormones may result in delayed ovarian maturation in pondreared crustaceans (Wouters et al, 2001;Meunpol et al, 2007). Reproductive hormones such as methyl farnesoate (Rodríguez et al, 2002), ecdysteroid (Dong et al, 2009), progesterone (Reddy et al, 2006), and gonad inhibition hormone (Urtgam et al, 2015) have been found to play a vital role in gonadal development and vitellogenesis of crustaceans. Among them, estradiol (E 2 ), whether endogenous or exogenous, is particularly important to promoting ovarian development and vitellogenesis (Warrier et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…How to promote ovarian development, vitellogenesis, and reproductive hormone expression, and to shorten gonad maturation time in crustaceans remain to be explored. Previous studies on crustacean ovarian development and vitellogenesis have focused mainly on the effects of various lipids and exogenous hormones (Reddy et al, 2006;Wu et al, 2007a;Zmora et al, 2009;Lu et al, 2010;Liu et al, 2018). However, the effects of Chinese herbal medicine additives on ovarian development and reproductive hormones in crustaceans are rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Dietary Supplementation With Icariin Affects Estrogen Synthesis, Vitellogenesis, and Oocyte Development in the Chinese Mitten Crab, Eriocheir sinensis

Zheng

Liu

et al. 2020

Front. Mar. Sci.

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In Eriocheir sinensis aquaculture, crabs feeding on an artificial diet without steroid hormones available in ice-fresh fish or snails show delayed ovarian maturation and late listing. Icariin (ICA), a safe plant-derived monomer compound, can effectively promote estradiol (E 2) synthesis and ovarian development in mammals, but its effect in crustaceans has not been reported. We investigated the effects of ICA on estrogen synthesis, vitellogenesis, and oocyte development in Chinese mitten crabs fed with one of four diets containing 0, 50, 100, and 200 mg/kg ICA, respectively, for 8 weeks. Results showed that vitellogenin (VTG) contents, gonadosomatic indexes (GSIs), and oocyte volumes in ICA50 and ICA 100 crabs were significantly higher than those in the control. The highest upregulated expression of VTG in hepatopancreases and ovaries was detected in ICA100 crabs. Hemolymph E 2 contents were also significantly increased in ICA100 crabs. Enzyme-linked immunosorbent assay (ELISA) and western blot analysis indicated that the increase in E 2 concentrations was attributable to an elevation in aromatase protein levels in ovaries through the cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA)/cAMP response element binding (CREB) protein pathway. These findings suggest that ICA could serve as a natural additive to resolve the problem of delayed ovarian maturation of crabs raised in ponds.

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Expression of RXR, EcR, E75 and VtG mRNA levels in the hepatopancreas and ovary of the freshwater edible crab, Oziothelphusa senex senex (Fabricius, 1798) during different vitellogenic stages

Girish

Swetha

Reddy

2015

Sci Nat

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The objective of the present study was to investigate the expression profile of retinoid X receptor (RXR), ecdysone receptor (EcR) and ecdysone inducible gene (E75) in the hepatopancreas and ovary of Oziothelphusa senex senex during different vitellogenic stages. RXR, EcR and E75 complementary DNAs (cDNAs) were isolated from the ovaries, while vitellogenin (VtG) cDNA was isolated from the hepatopancreas of vitellogenic female crab. Deduced amino acid sequence of the messenger RNAs (mRNAs) of RXR, EcR and E75 showed more than 80% identity with their respective mRNAs of other brachyurans. VtG mRNA was not detected in the ovary throughout vitellogenic stages. RXR and EcR were significantly increased in the ovaries during vitellogenic stage I. The levels of EcR, E75 and VtG in the hepatopancreas elevated significantly during vitellogenic stages I and II, whereas the levels of RXR elevated only in vitellogenic stage I. During vitellogenic stage III, the levels of RXR, EcR and VtG in the hepatopancreas were significantly decreased. Immunoprecipitation analysis revealed the presence of VtG in the haemolymph, hepatopancreas and ovary extracts from the females but absent in haemolymph and hepatopancreas extract of males. It can be inferred that RXR, EcR and E75 are involved in the regulation of synthesis of VtG in hepatopancreas, whereas in ovary, it is hypothesized that they play an important role in the uptake of VtG from the haemolymph, probably by regulating the levels of vitellogenin receptor. These are the first data showing an association between the expression levels of RXR, EcR and E75 and vitellogenesis and provide an alternative molecular intervention mechanism to the traditional eyestalk ablation to induce vitellogenesis and ovarian maturation in crustaceans.

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17α-Hydroxyprogesterone induced ovarian growth and vitellogenesis in the freshwater rice field crab Oziotelphusa senex senex

Cited by 30 publications

References 29 publications

Induction of vitellogenesis by 17-hydroxyprogesterone and methyl farnesoate during post-reproductive period, in the estuarine crabNeohelice granulata

Induction of vitellogenesis by 17-hydroxyprogesterone and methyl farnesoate during post-reproductive period, in the estuarine crabNeohelice granulata

Dietary Supplementation With Icariin Affects Estrogen Synthesis, Vitellogenesis, and Oocyte Development in the Chinese Mitten Crab, Eriocheir sinensis

Expression of RXR, EcR, E75 and VtG mRNA levels in the hepatopancreas and ovary of the freshwater edible crab, Oziothelphusa senex senex (Fabricius, 1798) during different vitellogenic stages

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