Inhibin anti-peptide antibody macromolecule: An approach to improve fecundity in Clarias batrachus

Ahmad, Irshad; Jagtap, Dhanashree D.; Balasinor, Nafisa; Rani, Babitha; Bhat, Irfan Ahmad; Chadha, Narinder Kumar; Rawat, Kiran; Saharan, Neelam

doi:10.1016/j.ijbiomac.2018.08.075

Cited by 11 publications

(3 citation statements)

References 36 publications

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“…Inhibins and activins are dimeric glycoproteins secreted in the gonads which regulate the secretion of FSH from the pituitary gland by a classical feedback loop (Nagahama et al 1997;O'connor & De Kretser 2004;Ahmad et al 2018;Ahmad et al 2020). Inhibin and activin have an opposite role in regulating the hormonal levels in the testis in which the latter stimulates the secretion of FSH and is inhibited by the former (Ge 2000).…”

Section: Molecular Regulation Of Spermatogenesis In Fishmentioning

confidence: 99%

“…Fish treated with hCG enhanced the activin activity, that in turn induced spermatogenesis (Miura et al 1995). In female C. batrachus, the active immunization against inhibin sustained the FSH production with an increase in egg production and quality (Ahmad et al 2018). In male fish, inhibin secretion can be inhibited by the use of inhibitors or by knockout or knockdown approaches for the continuous secretion of FSH to improve spermatogenesis.…”

Section: Molecular Regulation Of Spermatogenesis In Fishmentioning

confidence: 99%

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Testicular development and spermatogenesis in fish: insights into molecular aspects and regulation of gene expression by different exogenous factors

Bhat

Dar

Ahmad

et al. 2021

Reviews in Aquaculture

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In fish, as in higher animals, the normal ontogenesis of the gonads is the basis for successful reproduction. Gonadal differentiation and development depend on the genetic cascade that programmes the events. Eventually, gonads become the sites for the maturation of gametes, which are originally derived from the primordial germ cells (PGCs) and form the cellular basis of reproduction. In fish hormones of the hypothalamic-pituitary-gonadal (HPG) axis regulate reproduction and fertility by promoting or inhibiting the production of gonadal sex steroids and their function. Gonadal sex steroids not only guide proper gonadal development and function but also play a key role in the activation and regulation of the HPG axis through two feedback control systems. In this review, we discuss the general outline and expression pattern of the major genes involved in testicular development and gonadal steroidogenesis in fish. The review attempts, for the first time, to collect and discuss recent information regarding the regulation of sex differentiation and steroidogenic genes during the stages of testicular development and in response to different external factors. Furthermore, clear insights into the important genes and their regulation involved in the HPG axis and spermatogenesis are presented briefly. This review can serve as a guide for fish breeders on the substances that have a positive impact on reproduction in males.

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Section: Molecular Regulation Of Spermatogenesis In Fishmentioning

confidence: 99%

Section: Molecular Regulation Of Spermatogenesis In Fishmentioning

confidence: 99%

Testicular development and spermatogenesis in fish: insights into molecular aspects and regulation of gene expression by different exogenous factors

Bhat

Dar

Ahmad

et al. 2021

Reviews in Aquaculture

Self Cite

View full text Add to dashboard Cite

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“…magur under threatened species with overexploitation, and due to introduction of alien species such as Clarias gariepinus (Roy et al, 2019) and without management strategies the stock might further decline (Majhi & Kumar, 2017). The bottlenecks for seed production are constraints of captive breeding (Sahoo et al, 2010), and the male fish have to be sacrificed for milt release from seminal vesicles despite GnRH induction (Ahmad et al, 2018). The gamete quality and vitellogenesis can be improved by dietary intervention (Izquierdo et al, 2001; Wiegand, 1996).…”

Section: Introductionmentioning

confidence: 99%

The modulation effects of dietary zinc on reproductive performance and gonadotropins’ (FSH and LH) expression in threatened Asian catfish, Clarias magur (Hamilton, 1822) broodfish

Gupta

Srivastava

Kumar

et al. 2021

Aquaculture Research

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The availability of zinc has been correlated with reproductive performance. To validate the hypothesis, a 60‐day feeding trial was conducted to evaluate the effect of dietary zinc on reproductive performance and gonadotropin gene (FSH and LH) expression in threatened Clarias magur brooder. Four isonitrogenous (35%) and iso‐energetic (372.18 ± 1.73 k cal/100 g) diets were prepared with zinc acetate as control (100 mg/kg diet normal requirement), T1 (50 mg/kg diet, low zinc), T2 (200 mg/kg diet, medium zinc) and T3 (300 mg/kg diet, high zinc). The weight gain % and specific growth rate were significantly (p < 0.05) decreased with the increased dietary zinc level. The pituitary mRNA levels of FSH were assessed during the reproductive cycle of female C. magur, and the FSH expression was increased which was significantly (p < 0.05) highest in T1 group. Similarly, LH expression was revealed to be highest. In all treatment groups except T1, GTH expression reduced significantly by increasing zinc inclusion in the diet. GSI and fecundity were lowest during initial sampling and start to increase was observed. The highest GSI and fecundity were recorded in the T1; however, GSI and fecundity significantly (p < 0.05) reduced with increasing the zinc level. Reproductive parameters like spawning fecundity, fertilization rate, hatching rate and larval survival were found to be dose‐dependent of zinc. This revealed that 50 mg/kg zinc was optimum for enhanced reproductive performance; therefore, the present study proposed that 50 mg/kg of zinc could be supplemented for flexible enhanced reproductive performance in threatened Asian catfish, C. magur.

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Study on the Flocculation Performance of a Cationic Starch‐Based Flocculant on Humic Substances in Textile Dyeing Wastewater

et al. 2022

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Dissolved organic matter is one of the difficult problems in the treatment of textile dyeing wastewater, among which humic substances are the most harmful to the environment and human health. Herein, cationic starch‐based flocculants are prepared by free radical polymerization of corn starch (St) and methacryloyloxyethyl trimethyl ammonium chloride (DMC) in a redox‐initiated system of ammonium persulfate and sodium bisulfite. Corn starch‐graft‐poly(methacryloyloxyethyl trimethyl ammonium chloride) is denoted as St‐g‐PDMC. The St‐g‐PDMC is comprehensively characterized in terms of structural (element analysis, Fourier transform infrared, X‐ray diffraction, proton nuclear magnetic resonance spectroscopy), morphological (scanning electron microscopy), and thermal (differential scanning calorimetry) properties. Humic acid (HA) solution is selected to simulate negatively charged dissolved organic matter. The flocculation performance and mechanism of St‐g‐PDMC, cationic polyacrylamide (CPAM), and polymerized aluminum chloride (PAC) are systematically investigated. The experimental results show that St‐g‐PDMC functions mainly through the electric neutralization and bridging effect as the flocculation mechanism, CPAM using its own structure and the colloid formed by PAC through hydrolysis is more in line with the bonded bridging and net roll sweep trapping. The combined formulation of St‐g‐PDMC and PAC shows advantages over a single flocculant in the treatment of textile dyeing wastewater, and its cost is evaluated.

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Inhibin anti-peptide antibody macromolecule: An approach to improve fecundity in Clarias batrachus

Cited by 11 publications

References 36 publications

Testicular development and spermatogenesis in fish: insights into molecular aspects and regulation of gene expression by different exogenous factors

Testicular development and spermatogenesis in fish: insights into molecular aspects and regulation of gene expression by different exogenous factors

The modulation effects of dietary zinc on reproductive performance and gonadotropins’ (FSH and LH) expression in threatened Asian catfish, Clarias magur (Hamilton, 1822) broodfish

Study on the Flocculation Performance of a Cationic Starch‐Based Flocculant on Humic Substances in Textile Dyeing Wastewater

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