5 results
Search Results
Now showing 1 - 5 of 5
Publication Metadata only Immunohistochemical detection of GnRH-like peptides in the neural ganglia and testis of Haliotis asinina(2014-02-01) Parinyaporn Nuurai; Jeerawan Primphon; Tawanchay Seangcharoen; Yotsawan Tinikul; Chaitip Wanichanon; Prasert Sobhon; Burapha University; Mahidol UniversityGonadotropin releasing hormone (GnRH) is a peptide that is conserved in both vertebrate and invertebrate species. In this study, we have demonstrated the distribution pattern of two isoforms of GnRH-like peptides in the neural ganglia and testis... of the pleuropedal ganglia. In the testis, only octGnRH-ir was found primarily in the granulated cell and central capillaries within the trabeculae. These results suggest that multiple GnRH-like peptides are present in the neural ganglia which could be the principalPublication Metadata only Distribution of abalone egg-laying hormone-like peptide in the central nervous system and reproductive tract of the male mud crab, Scylla olivacea(2019-02-01) Kanjana Khornchatri; Jirawat Saetan; Tipsuda Thongbuakaew; Thanyaporn Senarai; Thanapong Kruangkum; Napamanee Kornthong; Yotsawan Tinikul; Prasert Sobhon; Walailak University; Mahidol University; Thammasat University; Burapha University; Prince of Songkla Universitypelagicus. In this study, we have studied the histology of the male reproductive tract in Scylla olivacea which are comprised of anterior testis, posterior testis, early proximal spermatic duct (ePSD), proximal spermatic duct (PSD), middle spermatic duct... (MSD) and distal spermatic duct (DSD), by immunohistochemistry, detected an abalone ELH- immunoreactivity (aELH-ir) in epithelium of ducts in posterior testis and epithelium of all parts of spermatic duct. Furthermore, we could detect aELH-ir in neuronsPublication Metadata only Spermatogenesis and distinctive mature sperm in the giant freshwater prawn, Macrobrachium rosenbergii (De Man, 1879)(2010-08-01) Jaruwan Poljaroen; Rapeepun Vanichviriyakit; Yotsawan Tinikul; Ittipon Phoungpetchara; Vichai Linthong; Wattana Weerachatyanukul; Prasert Sobhon; Mahidol UniversityThe structures of differentiating male germ cells in the testis of the giant freshwater prawn, Macrobrachium rosenbergii, were studied by light and electron microscopy. Based on ultrastructural characteristics, the developing male germ cellsPublication Metadata only Spermatogenesis in the rock oyster, Saccostrea forskali (Gmelin, 1791)(2015-06-23) Parinyaporn Nuurai; Sasiporn Panasophonkul; Yotsawan Tinikul; Prasert Sobhon; Ratanasate Wanichanon; Burapha University; Mahidol University; Phramongkutklao College of Medicine© 2015 Elsevier Ltd Morphology of the differentiating spermatogenic cells of the rock oyster Saccostrea forskali (Bivalve: Ostreidae) was investigated by light and transmission electron microscopy. The testis is formed by several branching aciniPublication Metadata only The effects of biogenic amines, gonadotropin-releasing hormones and corazonin on spermatogenesis in sexually mature small giant freshwater prawns, Macrobrachium rosenbergii (De Man, 1879)(2011-11-16) Jaruwan Poljaroen; Yotsawan Tinikul; Ittipon Phoungpetchara; Wilairat Kankoun; Saowaros Suwansa-ard; Tanapan Siangcham; Prasert Meeratana; Scott F. Cummins; Prapee Sretarugsa; Peter J. Hanna; Prasert Sobhon; Mahidol University; Burapha University; University of the Sunshine Coast; Deakin University/gBW, at 4-day intervals from days 0 to 16. We found that prawns treated with 5-HT and GnRH isoforms exhibited significant increases in their testis-somatic index (TSI), seminiferous tubules at early maturation, i.e., stages I and III, with increased