Inhibition of serotonin‐induced oocyte maturation by a <i>Spisula</i> factor

Kadam, Arjun L.; Koide, S. S.

doi:10.1002/jez.1402550212

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…In vertebrates, estradiol produced by ovarian follicle cells controls the production of vitellogenin for the oocyte by the liver. Additional ways to prevent premature ovulation in relation to seasonality include secreted inhibitors, either small peptides or proteins, originating from oocytes or somatic cells in the gonad or the central nervous system, as described in bivalve molluscs [209][210][211] and mammals [212,213]. Follicle cells and other cells in immediate contact with the oocyte are also, of course, important in breaking the prophase arrest though MIH secretion, but also contribute to its maintenance through gap junction communication.…”

Section: Discussionmentioning

confidence: 99%

Managing the Oocyte Meiotic Arrest—Lessons from Frogs and Jellyfish

Jessus

Munro

Houliston

2020

Cells

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During oocyte development, meiosis arrests in prophase of the first division for a remarkably prolonged period firstly during oocyte growth, and then when awaiting the appropriate hormonal signals for egg release. This prophase arrest is finally unlocked when locally produced maturation initiation hormones (MIHs) trigger entry into M-phase. Here, we assess the current knowledge of the successive cellular and molecular mechanisms responsible for keeping meiotic progression on hold. We focus on two model organisms, the amphibian Xenopus laevis, and the hydrozoan jellyfish Clytia hemisphaerica. Conserved mechanisms govern the initial meiotic programme of the oocyte prior to oocyte growth and also, much later, the onset of mitotic divisions, via activation of two key kinase systems: Cdk1-Cyclin B/Gwl (MPF) for M-phase activation and Mos-MAPkinase to orchestrate polar body formation and cytostatic (CSF) arrest. In contrast, maintenance of the prophase state of the fully-grown oocyte is assured by highly specific mechanisms, reflecting enormous variation between species in MIHs, MIH receptors and their immediate downstream signalling response. Convergence of multiple signalling pathway components to promote MPF activation in some oocytes, including Xenopus, is likely a heritage of the complex evolutionary history of spawning regulation, but also helps ensure a robust and reliable mechanism for gamete production.

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Section: Discussionmentioning

confidence: 99%

Managing the Oocyte Meiotic Arrest—Lessons from Frogs and Jellyfish

Jessus

Munro

Houliston

2020

Cells

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“…Both GTH and ovarian steroids modulate VT levels in catfish to influence follicular growth, ovulation, and spawning [ 174 , 175 , 179 ]. Incidentally, serotonin also induces oocyte maturation in fish and mollusks [ 180 , 181 , 182 , 183 , 184 , 185 ] which is yet to be explored in any catfish species. Despite these findings, MIH remains to be 17α,20β-DP in catfish too like some teleosts [ 176 ].…”

Section: Gamete Maturationmentioning

confidence: 99%

Advances in Reproductive Endocrinology and Neuroendocrine Research Using Catfish Models

Senthilkumaran

Kar

2021

Cells

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Catfishes, belonging to the order siluriformes, represent one of the largest groups of freshwater fishes with more than 4000 species and almost 12% teleostean population. Due to their worldwide distribution and diversity, catfishes are interesting models for ecologists and evolutionary biologists. Incidentally, catfish emerged as an excellent animal model for aquaculture research because of economic importance, availability, disease resistance, adaptability to artificial spawning, handling, culture, high fecundity, hatchability, hypoxia tolerance and their ability to acclimate to laboratory conditions. Reproductive system in catfish is orchestrated by complex network of nervous, endocrine system and environmental factors during gonadal growth as well as recrudescence. Lot of new information on the molecular mechanism of gonadal development have been obtained over several decades which are evident from significant number of scientific publications pertaining to reproductive biology and neuroendocrine research in catfish. This review aims to synthesize key findings and compile highly relevant aspects on how catfish can offer insight into fundamental mechanisms of all the areas of reproduction and its neuroendocrine regulation, from gametogenesis to spawning including seasonal reproductive cycle. In addition, the state-of-knowledge surrounding gonadal development and neuroendocrine control of gonadal sex differentiation in catfish are comprehensively summarized in comparison with other fish models.

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Chapter 7 Gametogenesis, Spawning, and Fertilization in Bivalves and Other Protostomes

Deguchi

Osada

2020

Reproduction in Aquatic Animals

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Inhibition of serotonin‐induced oocyte maturation by a Spisula factor

Cited by 8 publications

References 18 publications

Managing the Oocyte Meiotic Arrest—Lessons from Frogs and Jellyfish

Managing the Oocyte Meiotic Arrest—Lessons from Frogs and Jellyfish

Advances in Reproductive Endocrinology and Neuroendocrine Research Using Catfish Models

Chapter 7 Gametogenesis, Spawning, and Fertilization in Bivalves and Other Protostomes

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