A CYTOCHEMICAL STUDY OF LIPIDS IN SOWS’ OVARIES DURING THE ESTROUS CYCLE¹²

Effects of short-term injection of gonadotrophins on ovarian follicle development in hypogonadal (hpg) mice

“…They possess LH receptors (Charlton et al, 1982) and resemble typical steroid-secreting cells (Mutta, 1958;Fawcett et al, 1969). Their lipid droplets may contain precursors for steroidogenesis (Stegner, 1970) and changes in the number of lipid droplets have been correlated with gonadotrophic stimulation and steroidogenesis in several species (Barker, 1951;Rennels, 1951;Guraya & Greenwald, 1964;Nagai et al, 1967). …”

Histochemical study of the interstitial cells in the cattle ovary

“…Such epithelial cells, which have been overlooked by Rajakoski [ i960), persist indefinitely in the strom a of th e cattle ovary. Sim ilar epithelial cells have been described as " in terstitia l tissu e" by Barker [1951] in the sow's ovaries, as he states " M any of t he ovaries reveal sm all clusters of epithelioid cells in the stro m a of the cortex which resem ble th e in terstitia l cells so ab u n d a n t in the ro d e n t's ovaries. T hey contain large accum ulations of sudanophilic droplets ( fig.…”

Luteolysis in the pig: studies into the mechanism of action of prostaglandin F2[alpha]

“…Over the next several days (5)(6)(7)(8) of the estrous cycle the hypertrophied granulosa cells began to display some lipid inclusions and thecal-lutein cells migrated along the routes of invasion of capillaries into the parenchyma of the corpus luteum. Barker (1951) reported similar findings in his cytochemical investigation of lipids within the sow ovary, noting an almost identical pattern of theca-lutein cell invasion. These observations were based on the peculiar round bodies found within the granulosa-lutein cells, in combination with a greater abundance of lipid inclusions and a darker staining cytoplasm for theca cells.…”