Implication of oestrogen in the development of breast cancer: a brief narrative review

The presence of hormones in milk and dairy foods was discussed decades ago but more concerns were with respect to finding hormones as biomarkers in milk for diseases and pregnancy diagnosis. Considerable amount of studies demonstrated that milk is essential for infants growing and immunity, while increasing body of evidence are indicating possible negative impact on human health including the role of some estrogens in the initiation and provoking of breast cancer. In this brief narrative, we reviewed recent data on oestrogens and breast cancer risk including comparative levels of hormones in cow milk, risk of breast cancer attributable to intake of different foods and lifestyle factors. Empirical findings indicate that consumption of cow milk is probably being over-emphasized as source of exogenous oestrogen, whereas control of alcohol as well as obesity and physical activity are under-emphasized in discourses on preventive protocols.

Evaluation of utilization of insecticide treated nets among pregnant women in Bayelsa State of Nigeria: a case study of Sagbama community

Background: There has been a roll back mosquito (RBM) program in Nigeria. This study was carried out to determine the effectiveness and utilization of insecticide treated nets (ITNs) among pregnant women in Bayelsa State, Nigeria.Methods: A descriptive survey design was used to assess usage and patient experience. A total of 250 completed survey were returned out of 260 questionnaires distributed. Statistical analysis was in frequency counts and percentages.Results: Over 55% of respondents are aware that the best way to prevent malaria in pregnancy is to always sleep in ITNs. 20% of the respondents lack ITNs due to non-availability in the clinic or unaffordability in the market. Among those that own ITNs, only 31% utilize it every day. Suffocation and skin irritation were reasons for non-utilization. On effectiveness, among those who use their ITNs, 24.3% never suffered malaria or mosquito bite.Conclusions: ITNs utilization seems to have reached the RBM target. However, the study shows patient experience that use of ITNs seems to have limited effectiveness in prevention of malaria during pregnancy, while affordances and quality are barriers to utility. Ministry of Health and especially antenatal and community healthcare workers need to intensify health education campaign to improve attitude and practice of ITNs utility among pregnant mothers. Manufacturers of ITNs also need to improve on the quality of ITNs to reduce skin irritation or suffocation in order to encourage usage among pregnant mothers

Bacterial Contamination of Vhuswa - A Local Weaning Food and Stored Drinking-water in Impoverished Households in the Venda Region of South Africa

Bacterial contaminants of Vhuswa, a traditional maize-based weaning food, and domestic drinking-water stored in impoverished rural households in Venda of Limpopo province, South Africa, were determined. One hundred and twenty-five samples of Vhuswa fed to children aged less than five years were assessed for Escherichia coli , Campylobacter jejuni , Salmonella , and Shigella . The microbiological quality of 125 drinking-water samples was also evaluated using total coliforms, faecal coliforms, and faecal streptococci as indicators. The frequency of isolation of E. coli, Salmonella, Shigella, and C. jejuni from the Vhuswa samples was 70%, 5%, 5%, and 2% respectively. The geometric mean counts of total coliforms, faecal coliforms, and faecal streptococci in tap-water stored in household containers ranged from 4.9x102 to 5.8x103 cfu 100 mL-1 , 2.6x102 to 3.7x103 cfu 100 mL-1 , and 3.1x103 to 5.8x103 cfu 100 mL-1 respectively, and for stored spring water it was 5.1x103 cfu 100 mL-1 , 3.2x103 cfu 100 mL-1 , and 5.1x103 cfu 100 mL-1 respectively. The frequent contamination of water and food samples in this study has important implications for the health of children from impoverished communities

In vitro activity of three selected South African medicinal plants against human immunodeficiency virus type 1 reverse transcriptase

Crude extracts of three ethnobotanically selected medicinal plants were screened for activity against two functions of human immunodeficiency type 1 reverse transcriptase. Inhibition of the RNA-dependent DNA polymerase activity was evaluated by measuring the degree of incorporation of methyl-3H thymidine triphosphate using polyadenylic acid.oligodeoxythymidylic acid as a template primer. Ribonuclease H activity was evaluated by measuring the extent of degradation of a radiolabelled RNA in an RNA/DNA hybrid by reverse transcriptase in the presence of test substance. The methanol extract of the leaves of Terminalia sericea (Combretaceae) was found to strongly inhibit the polymerase (IC50 = 7.2 μg/ml) and the ribonuclease H (IC50 = 8.1 μg/ml) activities. Isolation and characterization of a possible active molecule is warranted