Effect of prenatal exposure of alcohol in the morphology of developing rat embryo.

The objective this study was to observe the morphological changes in developing rat embryo exposed to alcohol in utero. Virgin female Wistar rats in experimental group (n=15) were given 20% (v/v) alcohol two weeks before mating and throughout the gestational period through oral route. The controls (n=15) were also maintained and were given the tap water. On gestational day 15 (GD15) and 19 (GD19), five rats from each group were sacrificed by cervical dislocation and the abdomen was incised to expose the uterine horn. The number of implantation sites and resorptions were counted and recorded. The body weight and length of the fetuses were also recorded. The litter size and body weight of the newborn were also recorded at the time of birth from the remaining dam. The incidence of resorption was higher in alcohol treated group than in control which was found to be 25% and 8.7% at days 15 and 19 respectively. The body weight and length of fetuses were found to be decreased and was significant at GD15 (p<0.001 for weight and p<0.05 for length). Similarly, the litter size and body weight of newborn were also found to be decreased significantly (p<0.05 for litter size and p<0.01 for body weight). The present study shows that the maternal consumption of alcohol during pregnancy has adverse effect on fetal viability and development of growing embryo.

Knowledge about human genetics among school students of eastern Nepal.

School students from 10 to 19 years of age are adolescents. Adolescent girls are usually exposed to consequences of early marriage, pregnancy and increased responsibility. Genetic disorders are important issues to persons of the reproductive age group. History-taking and screening-tests could uncover risk factors that require diagnostic testing during pregnancy. Therefore, the present survey was conducted among 707 school students (55.6% males, 44.4% females) to find out their knowledge about human genetics. Data were collected as written responses to a close-ended questionnaire. The knowledge of students about human genetic was found to be poor. The majority of students was not aware of the prevalence of genetic disorders in the community. Many students (75%) felt that genetic laboratory facilities and counseling services are necessary in this country. More than half of the students did not know the name of a hospital where genetic laboratory services are available. The study indicates that there is a need to introduce the basics of human genetics in the school curriculum and to implement strategies for awareness programs about genetic disorders and their early detection for possible intervention.

Effect of methotrexate (MTX) administration on spermatogenesis: an experimental on animal model.

An experiment was conducted to observe histomorphometric and cellular toxicity on rat testes after sixty days of methotrexate administration intraperitoneally (ip). Total 30 adult male rats were divided into one control and two experimental groups containing 10 rats in each group. Experimental groups received methotrexate in two different doses i.e 25 ig and 50 ig, whereas control one received normal saline intraperitoneally. At the end of the experiment, animals were sacrificed and testes were processed for paraffin sectioning and stained in haematoxylin and eosin. Further microscopic study of seminiferous tubules, interstitial spaces, primary spermatocytes and spermatids were carriedout. Results revealed decreased diameter of seminiferous tubules, increased interstiial spaces in experimental groups in dose dependent manner and found to be statistically significant (p < 0.05) as well as distortion of morphology of Leydig cells in experimental group. Therefore, it can be concluded that these qualitative and quantitative changes in male gonads may alter the reproductive performance of animals.

Can homemade alcohol (Raksi) be useful for preserving dead bodies? An experiment on wistar albino rats.

INTRODUCTION: Embalming is the through disinfection and art of preserving bodies after death using chemical substances. It keeps a body life like in appearance during the time it lies in a state prior to funeral. OBJECTIVE: This study was undertaken to investigate the effectiveness of Raksi in sacrificed rats in arresting postmortem changes and establishing scientific fact whether Raksi can be an alternative to standard embalming constituent if it is not available. MATERIAL AND METHODS: 50 albino rats were systematically randomized into control and experiment groups. Raksi and distilled water were injected for embalming purpose intraventricularly in experiment and control groups of rats respectively and kept for 48 to 96 hours for observation for postmortem changes. RESULT: Observations made at 48 and 72 hours of embalming revealed that Raksi can arrest postmortem changes in the rats up to 72 hours (3rd day) successfully in the experimental group whereas moderate to severe postmortem changes were seen in the control group. The experimental group showed mild degree of putrefactive changes, liberation of gases and liquefaction of tissues only at 96 hours (4th day) of embalming. DISCUSSION: The Raksi used in this experiment contained 34% of alcohol, which was determined by an alcohol hydrometer. Experiment clearly demonstrated from its result that raksi can be utilised temporarily for embalming since it contains alcohol and has preservative, bactericidal and disinfectant properties. CONCLUSION: It is concluded from the study that this knowledge if applied to dead human subjects, may preserve dead bodies temporarily allowing delayed funeral.