Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Frog  (1)
  • Hypothalamo-hypophyseal control  (1)
  • Methallibure effects  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The function of fat bodies in relation to the hypothalamo-hypophyseal-gonadal axis in the frog, Rana esculenta (1975)
    Springer
    Cell & tissue research 161 (1975), S. 157-165 
    Details
    ISSN: 1432-0878
    Keywords: Fat bodies ; Frog ; Hypothalamo-hypophyseal control ; Testes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In this study the authors have tried to furnish experimental support for the importance of fat bodies in the normal functioning of the hypothalamo-hypophyseal-gonadal system of the male frog, Rana esculenta. These experiments have shown a hypothalamohypophyseal control of the mobilization of fat body contents, directly involved in the control of testicular activity. Furthermore it is proposed that the fat body contents are released into the testis through direct vascular contacts between the two organs. We suggest that the A1 cells (lactotrophs) and/or B2 cells (FSH-gonadotrops) of the pars distalis contain a factor responsible for the mobilization of fat body contents, and that the pars distalis gonadotropins are incapable of stimulating the testis in the absence of fat bodies. In the light of these results a scheme has been put forward showing the position of fat bodies in the hypothalamohypophyseal-gonadal axis of the frog.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220364
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effects of Methallibure (ICI 33,828) on the pars distalis of pituitary, testis and thumb pad of the green frog, Rana esculenta L. (1972)
    Springer
    Cell & tissue research 123 (1972), S. 430-440 
    Details
    ISSN: 1432-0878
    Keywords: Pars distalis ; Testis ; Thumb pad ; Rana esculenta ; Methallibure effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The influence of ICI compound 33,828 (1-α-methylallylthiocarbamoyl-2-methylthiocarbamoylhydrazine = Methallibure) on the pars distalis of pituitary, testes and thumb pads was investigated in the intact adult male green frog, Rana esculenta. Methallibure affected the gonadotropic basophils (particularly the B2 cells) of the pars distalis, which showed varying degrees of degranulation and underwent a notable decrease in their percentage. Within the testis this compound caused the arrest of spermatogenesis. The most uniform effect of Methallibure was observed in the thumb pads, which invariably showed regression of the epidermis and glandular epithelium. No histological changes occurred in the thyroid and adrenal glands and the B1 and A1 cells of the pars distalis remained unchanged cytologically. It is concluded, in concordance with the available data, that Methallibure is a non-steroidal antigonadotropic compound. The important question about its mode of action has been brought into discussion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335642
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...