Non-sex specific genes associated with the secondary mitotic period of primordial germ cell proliferation in the gonads of embryonic rainbow trout (Oncorhynchus mykiss )

2011 ◽  
Vol 78 (3) ◽  
pp. 181-187 ◽  
Author(s):  
James J. Nagler ◽  
Tim Cavileer ◽  
Sam Hunter ◽  
Robert Drew ◽  
Tomoyuki Okutsu ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Germ Cell Proliferation

scholarly journals Inhibition of primordial germ cell proliferation by the medaka male determining gene Dmrt1bY

2007 ◽  
Vol 7 (1) ◽  
pp. 99 ◽  
Author(s):  
Amaury Herpin ◽  
Detlev Schindler ◽  
Anita Kraiss ◽  
Ute Hornung ◽  
Christoph Winkler ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Germ Cell Proliferation

Branchial chloride cell proliferation in the rainbow trout, Oncorhynchus mykiss: implications for gas transfer

1994 ◽  
Vol 72 (8) ◽  
pp. 1395-1402 ◽  
Author(s):  
Shawn D. Bindon ◽  
James C. Fenwick ◽  
Steve F. Perry
Keyword(s):  
Electron Microscopy ◽  
Cell Proliferation ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Surface Area ◽  
Chloride Cell ◽  
Gas Transfer ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Treated Fish ◽  
Fractional Surface

The effects of branchial chloride cell proliferation on ion transport capability and gill morphometry were evaluated in the rainbow trout, Oncorhynchus mykiss, to test the hypothesis that chloride cell (CC) proliferation benefits ionic regulation at the expense of efficient gas transfer. The extent of hormone-induced CC proliferation (using ovine growth hormone (oGH), cortisol, or a combination of both) on the gill filament epithelium was assessed by determining the fractional surface area of exposed cells using scanning electron microscopy. Cortisol and oGH were equally effective in increasing CC fractional surface area (~2×), owing to the enlargement of individual CCs. The combined cortisol/oGH treatment resulted in an even greater increase in CC fractional area (~6×), as both the size and number of CCs increased. Sham injections were without effect on CC surface area or number. Significant increases in Na+ (Jin Na+) and Cl− uptake (Jin Cl−) were observed after all hormone treatments and were correlated positively with the increases in the CC fractional surface area. These findings support the view that CC proliferation enhances branchial ion transport capability. Lamellar epithelial thickness (measured by transmission electron microscopy) was increased in hormone-treated fish, while lamellar surface area (measured using light microscopy) was unaffected. The area of the interlamellar water channels (calculated from light micrographs) was significantly reduced in hormone-treated fish. These results suggest that, in trout, a compromise is made between the efficiency of ion regulation and gas transfer in which the enlargement/proliferation of CCs may impede gas transfer.

scholarly journals Activin and TGFβ Limit Murine Primordial Germ Cell Proliferation

1999 ◽  
Vol 207 (2) ◽  
pp. 470-475 ◽  
Author(s):  
Ami J. Richards ◽  
George C. Enders ◽  
James L. Resnick
Keyword(s):  
Cell Proliferation ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Germ Cell Proliferation

Autocrine and paracrine mechanisms regulating primordial germ cell proliferation

2004 ◽  
Vol 68 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Eihachiro Kawase ◽  
Koichiro Hashimoto ◽  
Roger A. Pedersen
Keyword(s):  
Cell Proliferation ◽  
Germ Cell ◽  
Primordial Germ Cell ◽  
Germ Cell Proliferation
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