Promotion of epithelial keratinization by N-methyl-N′-nitro-N-nitrosoguanidine in rat forestomach in organ culture

1979 ◽  
Vol 35 (5) ◽  
pp. 666-668 ◽  
Author(s):  
H. Fukamachi ◽  
S. Takayama
Keyword(s):  
Organ Culture ◽  
Epithelial Keratinization

Freeze-etch observations on the tight junctions of sertoli cells grown in organ culture with FSH

1978 ◽  
Vol 36 (2) ◽  
pp. 340-341
Author(s):  
Rita Meyer ◽  
Zoltan Posalaky ◽  
Dennis Mcginley
Keyword(s):  
Organ Culture ◽  
Tight Junctions ◽  
Sertoli Cell ◽  
Germ Cells ◽  
Sertoli Cells ◽  
Barrier Function ◽  
Cell Junction ◽  
Intramembranous Particles ◽  
Junctional Complexes ◽  
Oriented Parallel

The Sertoli cell tight junctional complexes have been shown to be the most important structural counterpart of the physiological blood-testis barrier. In freeze etch replicas they consist of extensive rows of intramembranous particles which are not only oriented parallel to one another, but to the myoid layer as well. Thus the occluding complex has both an internal and an overall orientation. However, this overall orientation to the myoid layer does not seem to be necessary to its barrier function. The 20 day old rat has extensive parallel tight junctions which are not oriented with respect to the myoid layer, and yet they are inpenetrable by lanthanum. The mechanism(s) for the control of Sertoli cell junction development and orientation has not been established, although such factors as the presence or absence of germ cells, and/or hormones, especially FSH have been implicated.

IN VITRO METHODS FOR THE STUDY OF THE ADENOHYPOPHYSIAL FUNCTIONS TO SECRETE GONADOTROPHIN

1971 ◽  
Vol 68 (1_Suppl) ◽  
pp. S27-S40 ◽  
Author(s):  
T. Kobayashi ◽  
T. Kigawa ◽  
M. Mizuno ◽  
T. Watanabe
Keyword(s):  
Cell Culture ◽  
Organ Culture ◽  
Cultured Cells ◽  
Cell Sheet ◽  
Short Term ◽  
Hypothalamic Extract ◽  
Numerous Cell ◽  
Single Cell Culture ◽  
Almost All

ABSTRACT There are several in vitro methods to analyse the function of the adenohypophysis or the mechanisms of its regulation. The present paper deals with single cell culture, organ culture and short term incubation techniques by which the morphology and gonadotrophin-secreting function of the adenohypophysis were studied. In trypsin-dispersed cell culture, the adenohypophysial cells showed extensive propagation to form numerous cell colonies and finally develop into a confluent monolayer cell sheet covering completely the surface of culture vessels. Almost all of the cultured cells, however, became chromophobic, at least at the end of the first week of cultivation, when gonadotrophin was detectable neither in the culture medium nor in the cells themselves. After the addition of the hypothalamic extract, gonadotrophin became detectable again, and basophilic or PAS-positive granules also reappeared within the cells, suggesting that the gonadotrophs were stimulated by the extract to produce gonadotrophin. In organ culture and short term incubation, the incorporation of [3H] leucine into the adenohypophysial cells in relation to the addition of hypothalamic extract was examined. It was obvious that the ability to incorporate [3H] leucine into the gonadotrophs in vitro was highly dependent upon the presence of the hypothalamic extract.

Calcium Ameliorates Renal Cyst Growth in Metanephric Organ Culture: A Morphological Study

2012 ◽  
Vol 31 (3) ◽  
pp. 285-293 ◽  
Author(s):  
Nidhi Mahajan ◽  
Tarundeep Kaur ◽  
Veena Puri ◽  
S.K. Singla ◽  
Vivekanand Jha ◽  
...  
Keyword(s):  
Organ Culture ◽  
Morphological Study ◽  
Renal Cyst ◽  
Cyst Growth

scholarly journals Influence of Cortisol on Glycogen Synthesis and Gluconeogenesis in Fetal Rat Liver in Organ Culture

1972 ◽  
Vol 247 (11) ◽  
pp. 3608-3617
Author(s):  
Carl Monder ◽  
Alena Coufalik
Keyword(s):  
Organ Culture ◽  
Rat Liver ◽  
Glycogen Synthesis ◽  
Fetal Rat ◽  
Fetal Rat Liver
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