Prenatal exposure to chronic stress during critical periods of foetal development produces depression, attention and learning deficits, hormonal imbalances and affects the brain. The effect of prenatal restraint-stress on the postnatal developmental milestones, anthropometric measurements, and the body, brain and adrenal gland weights of the pups were examined and compared with the unrestrained control and the restrained group under the pyramid at postnatal day 10 and 21. Pregnant rats were restrained (9h/day) from gestation day 7 until parturition. Results showed significant delay in the milestones by one day in the restraint control (RC) compared to the unrestrained normal control (NC), while pups of the restrained pyramid (RP) group did not show the delay. Significant decreases in the anthropometric measurements, body and brain weights in RC group were observed at both postnatal days, while the RP group results matched with the NC group. Significant increase in the adrenal weights was found in the RC group compared to NC group and not the RP group. Results suggest prenatal restraint-stress definitely hampers the developmental milestones, anthropometric measurements, and body and brain weights of the young offspring. Results suggest, pyramid environment counteracts and protects the deleterious effects of chronic prenatal stress.
The huge population of persuadable, active, healthy and young students is the potential as blood donors to meet safe blood donation. This study focused on the existing level of knowledge regarding voluntary blood donation among medical (Faculty of Medicine and Health Science) and nonmedical students with science background (Faculty of Engineering) at the Universiti Malaysia Sabah. Four hundred and fifty-five students consisting of medical (231) and nonmedical (224) were selected through stratified random sampling to participate in the study. Data was collected using validated structured questionnaire. Statistical analysis was performed by structural equation modelling using SPSS AMOS Graphics version 22 and SPSS version16. The results showed a significant (pp
Mother-offspring interaction begins before birth. The foetus is particularly vulnerable to environmental insults and stress. The body responds by releasing excess of the stress hormone cortisol, which acts on glucocorticoid receptors. Hippocampus in the brain is rich in glucocorticoid receptors and therefore susceptible to stress. The stress effects are reduced when the animals are placed under a model wooden pyramid. The present study was to first explore the effects of prenatal restraint-stress on the plasma corticosterone levels and the dendritic arborisation of CA3 pyramidal neurons in the hippocampus of the offspring. Further, to test whether the pyramid environment would alter these effects, as housing under a pyramid is known to reduce the stress effects, pregnant Sprague Dawley rats were restrained for 9 h per day from gestation day 7 until parturition in a wire-mesh restrainer. Plasma corticosterone levels were found to be significantly increased. In addition, there was a significant reduction in the apical and the basal total dendritic branching points and intersections of the CA3 hippocampal pyramidal neurons. The results thus suggest that, housing in the pyramid dramatically reduces prenatal stress effects in rats.