Study Design and Methods
We conducted a survey of 7635 presenting blood donors at three Brazilian blood centres from 15 October through 20 November 2009. Participants completed a questionnaire on HIV knowledge and attitudes about blood donation. Six questions about blood testing and HIV were evaluated using maximum likelihood chi-square and logistic regression. Test seeking was classified in non-overlapping categories according to answers to one direct and two indirect questions.
Results
Overall, respondents were male (64%) repeat donors (67%) between 18 and 49years old (91%). Nearly 60% believed blood centres use
better HIV tests than other places; however, Copanlisib 42% were unaware of the HIV window period. Approximately 50% believed it was appropriate to donate to be tested for HIV, but 67% said it was not acceptable to donate with risk factors even if blood is tested. Logistic regression found that less education, Hemope-Recife blood centre, replacement, potential and self-disclosed test-seeking were associated with less HIV knowledge.
Conclusion
HIV knowledge related to blood safety remains low among Brazilian blood donors. A subset finds it appropriate to be tested at blood centres and may be unaware of the HIV window period. These donations may impose a significant risk to Combretastatin A4 datasheet the safety
of the blood supply. Decreasing test-seeking and changing beliefs about the appropriateness of individuals with behavioural risk factors donating blood could reduce the risk of transfusing an infectious Ricolinostat unit.”
“Different Iris species are known as medicinal plants. The aim of this study was to evaluate the in vitro antioxidant and cytotoxic activities of different extracts from Iris pseudopumila Tineo flowers and rhizomes. The radical scavenging activity was assessed by means of DPPH assay. The antioxidant activity was assessed by means of two tests: bleaching of -carotene and lipid peroxidation of liposomes. Methanolic and chloroform extracts from the flowers of I. pseudopumila showed a significant
antiradical effect with IC50 of 101 and 83 g mL-1, respectively. As regards to lipid peroxidation, the best activity was showed by methanolic extract of flowers (IC50 of 18 g mL-1) and chloroformic extract of rhizomes (IC50 33 g mL-1). The cytotoxic activity was carried out using the SRB assay. The chloroform extract from rhizomes demonstrated a good cytotoxic activity against amelanotic melanoma cancer cell line (C32) with an IC50 of 57 g mL-1. The results obtained support the ethnomedical claims for the plant.”
“Contents The aim of this study was to determine whether postpartum variations of plasma IGF-1 and IGFBP concentrations, oocyte production and quality were related to parity and subsequent conception rate in Holstein dairy cows.