Post-Coital Cytological Changes in the Adenohypophysis of the Non-Parous Rabbit

Foster, C. L.

doi:10.1677/joe.0.0270293

Cited by 6 publications

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References 6 publications

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“…Their results are not readily assessed since no distinction was made between zona tuberalis and pars distalis proper which, according to our results, reacts differently; the mucoid cells of the zona tuberalis increased in number during the earlier stages while those of the pars distalis proper decreased. The latter changes closely paralleled those observed in a much shorter time in the female following coitus (Foster, 1963). After castration for 3-4 months the pars distalis proper had virtually returned to normal and there¬ after probably passed into a state of moderate mucoid cell hyperplasia.…”

Section: Discussionsupporting

confidence: 77%

“…If changes produced by gonadectomy in the female follow a pattern generally similar to that in the male, this could have been due to a moderate mucoid cell hyperplasia of the pars distalis proper which probably develops at about this time in the male-the zona tuberalis having returned to normal. Such an interpretation would support the view, put forward in an earlier paper (Foster, 1963), that it is these mucoid cells which produce LH. If so, it might reasonably be suggested that FSH is produced by mucoid cells in the zona tuberalis.…”

Section: Discussionsupporting

confidence: 71%

“…The cytology of the adenohypophysis of the normal and post-coital female rabbit has been described in previous investigations (Allanson, Foster & Menzies, 1959;Foster, 1963). This report is concerned with the cytological changes in young adult male rabbits at varying times after castration.…”

Section: Introductionmentioning

confidence: 78%

“…5-7). Cell counts were not practicable because, as in the female rabbit (Foster, 1963), the distribution of the mucoid cells in normal and castrated males was very uneven. A return towards normal was observed in Group 2, but in Group 3 the zona tuberalis appeared to be considerably depleted of mucoid cells (Plate, fig.…”

Section: The Zona Tuberalis In Castrated Rabbitsmentioning

confidence: 99%

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Cytological Changes in the Adenohypophysis of the Rabbit After Castration

Foster¹,

Cameron²

1964

Journal of Endocrinology

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An early effect of castration on the cytology of the rabbit adenohypophysis was found to be a hyperplasia of the mucoid cells of the zona tuberalis occurring simultaneously with a degranulation and decrease in the numbers of such cells in the lateral regions of the pars distalis proper.A recovery from these changes was observed about 4 months after castration. There was then a moderate hyperplasia of the mucoid cells of the pars distalis proper and probably a depletion of mucoid cells in the zona tuberalis.The possible significance of these findings is briefly discussed.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 78%

Section: The Zona Tuberalis In Castrated Rabbitsmentioning

confidence: 99%

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Cytological Changes in the Adenohypophysis of the Rabbit After Castration

Foster¹,

Cameron²

1964

Journal of Endocrinology

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“…Dawson (1946) later identified the carmine cell of the cat with the secretion of prolactin. Pearse (1951Pearse ( , 1952 and Foster (1963) concluded that the mucoid cells were more active than the acidophils shortly after coitus and were the more probable source of gonadotrophic hormones. Gepts (1954) studied the gland of the lactat¬ ing rabbit and found widespread secretory activity of both carmine-and orangestained acidophils.…”

Section: Introductionmentioning

confidence: 99%

Observations on the Acidophil Cells of the Adenohypophysis in Pregnant and Lactating Rabbits

Allanson¹,

Cameron²,

Foster³

1966

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The pituitary gland of the musk shrew, Suncus murinus L. (insectivora), with special reference to the cytology of the adenohypophysis

Naik

Dominic

1972

Am. J. Anat.

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The pituitary gland of the musk shrew, Suncus murinus L. was studied with special reference to the cytology of the adenohypophysis. In addition to the agranular cells (chromophobes ), seven morphologically and tinctorially distinct Nchromophilic cell types (four mucoid and three acidophilic) were observed in the pars anterior. These cells have been tentatively named as types one to seven. On the basis of their morphology, topography and staining reactions, cells of types one to six were compared, respectively, with the TSH, FSH, ICSH (L,H), LTH (prolactin), STH and ACTH cells of other mammals. The identity of type 7 cells could not be determined. Although mucoid cells (types 1, 2) art: more concentrated in the rostroventral region of the pars anterior, a definite "zona tuberalis" seems to be lacking. Since the musk shrew is not a seasonal breeder, the gonadotropic cells (types 2, 3 ) of the adenohypophysis do not seem to fluctuate in structure during the different times of the year. However, conspicuous hypertrophy, hyperplasia and intense secretory activity of type 4 cells during pregnancy and lactation reinforces the postulation that these cells are lactotropic in function. Follicular cysts and colloid in the residual cleft were observed in a few instances. Their possible origin and significance are discussed.Knowledge cif the morphology and cytology of the hypophysis in several groups of mammals has been enriched immensely i n recent years. (Purves, '61, '66; Herlant, '64, '65; Hansi:rom, '66; Girod, '66; Allanson and Parkes, '66). However, only scanty inform ation is available on the order Insectivora, except for the mole (Herlant, '64; Holmes, '66), desman (Herlant, '64) and hedgehog (e.g., Girod et al., '66, '67). The family Soricidae of this order does not seem to have received any attention, the (only study having been confined to brief description of the hypophysis of the short-tailed shrew, Blarina (Dawson, '63; Hanstrom, '66). The present paper presents a detailed anatomical description of the hypophysis and a comprehensive account on the cytology of the adenohypophysis of the musk shrew, Suncus ,murinus L. Banaras Hindu University c a m m s and adjacent areas were used. Included were 50 females in different stages of gestation, 12 pregnant and concurrently lactating females, 8 lactating females, 90 non-pregnant females and nearly 100 males. Most of the animals were sacrificed within 12 hours of capture; some were maintained in the laboratory for varying periods before sacrifice. Conspicuous seminiferous tubules visible through the tunica albuginea of the testes, and the presence of spermatozoa in the testes and the genital tract, were taken as indicators of sexual maturity in the male. Since some animals weighing 28-35 gm were pregnant, females weighing 40 gm or more were regarded as being sexually mature. The condition of the mammary glands, uteri and ovaries were considered in assessing the sexual maturity of the female. Pregnant females were classified into three groups (those of early, ...

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Post-Coital Cytological Changes in the Adenohypophysis of the Non-Parous Rabbit

Cited by 6 publications

References 6 publications

Cytological Changes in the Adenohypophysis of the Rabbit After Castration

Cytological Changes in the Adenohypophysis of the Rabbit After Castration

Observations on the Acidophil Cells of the Adenohypophysis in Pregnant and Lactating Rabbits

The pituitary gland of the musk shrew, Suncus murinus L. (insectivora), with special reference to the cytology of the adenohypophysis

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