geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Parts tuberalis specific cells within the pars distalis of the adenohypophysis: An ontogenetic study


, : Parts tuberalis specific cells within the pars distalis of the adenohypophysis: An ontogenetic study. Annals of Anatomy 175(2): 171-176

Several types of secretory cells of the pars distalis (pd), especially gonadotrophs, are known to occur in the distal pars tuberalis (pt) of the rat. The distribution of the pt-specific cells, however, within the pd has not been investigated in detail and is the subject of this study. Pt and pd of the rat adenohypophysis were investigated at different stages of the peri- and postnatal development by light and electron microscopy using conventional and immunohistochemical staining. The distribution of pt-specific cells changes from a continuous strand of cells extending on the ventral surface to the centre of the pd perinatally to single clusters in the vicinity of the big portal vessels in adult rats. The secretory activity of pt-specific cells within the pd also varies with age. It is highest perinatally, declines in the young rat, and increases again in the adult animal. Functional implications of our observations are discussed especially in relation to the distribution of melatonin-binding pituitary cells.

US$29.90

PMID: 8489037


Other references

Vanhatalo, A.; Jones, A.M., 2008: Influence of prior sprint exercise on the parameters of the 'all-out critical power test' in men. We tested the hypothesis that a prior 30 s sprint exercise bout would significantly reduce the curvature constant (W') but not the power-asymptote (critical power, CP) of the power-duration relationship as assessed using a novel 3 min all-out...

Moulton, D.E.; Goriely, A., 2011: Possible role of differential growth in airway wall remodeling in asthma. Airway remodeling in patients with chronic asthma is characterized by a thickening of the airway walls. It has been demonstrated in previous theoretical models that this change in thickness can have an important mechanical effect on the properties...

Fipps, D.R.; Damato, J.J.; Burke, D.S., 1988: Effects of heat inactivation on HIV antibody screening and confirmatory test systems. In order to evaluate the effect of heat inactivation on serum undergoing testing for HIV antibody, 100 heat-inactivated and nonheat-inactivated serum samples were tested by two modifications of Abbott's screening assays for human T-cell lymph...

Ignatenko, Mm, 1981: Introduction of Siberian pine in the area around Leningrad Pinus sibirica.1. Lesnoe khoziaistvo: ) 64-67

Bannister, S.; Antonova, O.; Polo, A.; Lohs, C.; Hallay, N.; Valinciute, A.; Raible, F.; Tessmar-Raible, K., 2014: TALENs mediate efficient and heritable mutation of endogenous genes in the marine annelid Platynereis dumerilii. Platynereis dumerilii is a marine polychaete and an established model system for studies of evolution and development. Platynereis is also a re-emerging model for studying the molecular basis of circalunar reproductive timing: a biological phenome...

Selivanov L.S., 1938: Stony meteorite of Kainsaz. Nature (London) 142(3596): 623

Oriji, G.K.; Keiser, H.R., 1998: Role of nitric oxide in cyclosporine A-induced hypertension. Cyclosporine A (CsA) is an immunosuppressive agent that also causes hypertension. The effect of CsA on vascular responses was determined in Sprague-Dawley rats and isolated rat aortic rings. Male rats weighing 250 to 300 g were given either CsA (2...

Stump, A., 2010: Rules and regulations regarding osteopaths. Journal of the Indiana State Medical Association 39: 243-243

Ridge, D.; Dick, R., 1985: Factors affecting cane harvesting and transport costs. Proceedings of the Conference of the Australian Society of Sugar Cane Technologists: 39-145

Qiao, X.; Suri, C.; Yancopoulos, G.D.; Noebels, J.L.; Knusel, B., 1997: Absence of mossy fiber sprouting in transgenic mice overexpressing BDNF in the dentate gyrus. Society for Neuroscience Abstracts 23(1-2): 331