M
Mohammad Ashraful Alam
Researcher at University of the Ryukyus
Publications - 28
Citations - 478
Mohammad Ashraful Alam is an academic researcher from University of the Ryukyus. The author has contributed to research in topics: Biology & Honeycomb grouper. The author has an hindex of 10, co-authored 13 publications receiving 432 citations. Previous affiliations of Mohammad Ashraful Alam include Sylhet Agricultural University.
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Molecular cloning and quantitative expression of sexually dimorphic markers Dmrt1 and Foxl2 during female-to-male sex change in Epinephelus merra.
TL;DR: Real-time quantitative RT-PCR analyses showed that Foxl2 mRNA expression was significantly downregulated from the late transitional phase to the completion of sex change, whereas Dmrt1 expression increased with the progression of spermatogenesis and continued until the formation of the testis.
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Sexually Dimorphic Expression of Gonadotropin Subunits in the Pituitary of Protogynous Honeycomb Grouper (Epinephelus merra): Evidence That Follicle-Stimulating Hormone (FSH) Induces Gonadal Sex Change
Yasuhisa Kobayashi,Mohammad Ashraful Alam,Ryo Horiguchi,Akio Shimizu,Masaru Nakamura,Masaru Nakamura +5 more
TL;DR: The results suggest that FSH may trigger the female-to-male sex change in honeycomb grouper.
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Evidence that estrogen regulates the sex change of honeycomb grouper (Epinephelus merra), a protogynous hermaphrodite fish.
TL;DR: Results show that E2 plays an important role in maintaining female sex of hermaphrodite fishes, and that the inhibition of E2 synthesis causes oocyte degeneration leading to testicular differentiation in the ovary.
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Induction of female-to-male sex change in the honeycomb grouper (Epinephelus merra) by 11-ketotestosterone treatments
TL;DR: The results suggest that 11KT plays an important role in sex change in the honeycomb grouper, and whether the mechanism of 11KT-induced female-to-male sex change acts through direct stimulation of spermatogenesis in the ovary or via the inhibition of estrogen synthesis remains to be clarified.
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Immunohistochemical evidence identifying the site of androgen production in the ovary of the protogynous grouper Epinephelus merra
Mohammad Ashraful Alam,Hiroki Komuro,Ramji K. Bhandari,Shigeo Nakamura,Kiyoshi Soyano,Masaru Nakamura +5 more
TL;DR: The results of the present study suggest that two distinct steroid biosynthesis sites exist in the ovary and that cells at the two sites differ functionally.