ANTIOESTRADIOL SERUM IN IMMATURE HAMSTERS

Elevated levels of serum S100 beta protein in scrapie hamsters.

Recently, immunoluminometric analysis revealed elevated levels of serum S100 beta protein in sporadic and genetic cases of Creutzfeldt-Jakob disease (CJD) as compared to demented and nondemented control patients (Otto et al, 1998). S100 beta protein is a well established marker for the activation of astrocytes and also shows enhanced histochemical presentation in Alzheimer's disease (Sheng et a...

Fine-structural changes in the nucleus of primordial oocytes in immature hamsters.

This study reports observations on fine-structural changes in the nucleus of the oocyte in hamsters during the establishment of the primordial (unilaminar) follicle at 7 to 12 days after birth. Following pachytene, the nuclei at early diplotene contain simple chromosomal cores surrounding by a sheath of fibrillo-granular material symmetrically disposed in the form of lateral projections and loo...

Intake of phosphatase-active plasma membrane into the cytoplasm of oocytes from sexually immature hamsters.

When thiamine pyrophosphate is used as substrate, heavily stained complexly branching cytoplasmic structures are seen in developing oocytes of the hamster between 8 and 12 days after birth. This coincides with the onset of the dictyate stage of first meiotic prophase. The structures appear to arise from the oocyte plasma membrane in two ways: (1) by proliferation and infolding of the membrane, ...

Pathogenesis of vaccine strains of measles virus in suckling hamsters

Effect of endotoxin on cholesterol biosynthesis and distribution in serum lipoproteins in Syrian hamsters.

Infection and inflammation increase serum triglyceride and cholesterol levels in rodents and rabbits. Endotoxin (LPS) has been used as a model of infection and its effects on triglyceride metabolism have been previously characterized. In the present study we demonstrate that both low (100 ng/100 g body weight) and high dose (100 micrograms/100 g body weight) LPS increase serum cholesterol level...