Social interactions can have pronounced effects on reproductive physiology and behavior in a wide range of species. Much less is known about the effects of social interactions on immunity. The goal of the present study was to test the effects of social interactions on both reproductive and immune responses in Siberian hamsters (Phodopus sungorus). Male and female hamsters were housed alone, in ...

Among the small group of species (e.g., some temperate zone turtles, snakes, and bats) that exhibit a dissociated reproductive pattern, the red-sided garter snake (Thamnophis sirtalis parietalis) is probably the most well studied. For these species, courtship and mating occur immediately upon emergence from winter dormancy; the gonads remain essentially inactive. Male red-sided garter snakes ar...

of the Lancet and the British Medical Journal. When issues were at stake, the former generally expressed the views of the specialists, the whole-time internists and surgeons, and the latter took a stand for the general practitioner and family physician. Some of the statistical data will make strange reading for people whose horizons of the structure of medical care are those of the United State...

The role of prostaglandins in reproductive physiology is reviewed with particular emphasis on their possible importance in ovulation in humans. A possible interaction between gonadal steroids, biogenic amines and prostaglandins at hypothalamic-pituitary level, in relation to the release of luteinizing hormone releasing factor, and LH, is discussed. Anomalies regarding the role of oestrogens in ...

Two studies investigated the effect of a thermo-tolerant E.coli-derived phytase (QuantumTM) on performance and bone parameters of broilers fed diets varying in content of available phosphorus (AP), metabolizable energy (ME) and total lysine (TLYS). A 48-day floor pen trial used 80 pens of 16 male broilers fed corn/soya/meat-bone meal based diets formulated to commercial averages (AS) or below. ...

The reproductive physiology of nine Galápagos tortoises (Geochelone nigra) was studied from February 1988 to May 1989. The study encompassed the annual reproductive cycle to include complete mating and nesting sequences. Male (n = 4) and female (n = 5) seasonal reproductive changes were determined throughout the study with endocrine analysis and ultrasonographic examinations. Males displayed a ...

The expression patterns of folate receptor (FR) isoforms, alpha and beta, in normal and malignant male and female reproductive tissues is described. The significance of the receptor in reproductive and developmental physiology is discussed. The potential value of the receptor expressed in malignant tissues including ovarian and endometrial cancers as a diagnostic marker and a therapeutic target...

Steroid hormone action during brain development exerts profound effects on reproductive physiology and behavior that last into adulthood. A variety of in vitro studies indicate that steroid receptors require nuclear receptor coactivators for efficient transcriptional activity. To determine the functional significance of the nuclear receptor coactivator SRC-1 in developing brain, we investigated...