The half-lives of biological activity of some pesticides in water

In the absence of analytical methods, the half-lives of biological activity of pesticides can be estimated by bioassays. To determine the half-lives of biological acivity of pesticides to fish, static bioassays were conducted in the laboratory with ten different formulations of pesticides using Labeo rohita as a bio-indicator. The half-lives of biological activity for ten different pesticides in soft water at pH 7.5 and 27°C, ranged from 4.6 days to 11.8 days. The half-life of biological activity of Sumithion 50% EC was only 4.6 days. In contrast, Dimecron 50% EC degraded very slowly and its half-life of biological activity on L. rohita was about 11.8 days. Sumithion 50% EC, Padan 50% SP, EPN 45% EC, Diazinon 40% EC and Diazinon 10 G degraded in less than five to seven days indicating that these pesticides are desirable for rice-fish culture. Contamination by pesticides with long-term residual toxicity in waters may eventually cause high levels of fish mortality

Safe use of pesticide in rice-fish culture

Results of the study on the relative safety of nine different pesticides: Diazinon 40% EC, Diazinon 10 G, Elsan 50% EC, Sumithion 50% EC, Furadan 3 G, Padan 50% SP, Kitazin 48% EC, Kitasin 17% G and EPN 45% EC for various fish species: Cyprinus carpio, Labeo rohita, Oreochromis mossambicus, Channa punctata, Clarias batrachus and Anabas testudineus used in rice-fish culture are presented and discussed

Safe use of pesticide in rice-fish culture

Pesticides, Rice field aquaculture, Integrated farming

Health literacy - is it useful in prevention of behavioral risk factors of NCDs?

Background: Health literacy means cognitive and social skills of a person that determine his or her ability to access, understand and use health information to maintain and promote health. People need to understand and use health information in order to choose a healthy lifestyle or to take advantage of preventive measures. The occurrence and consequences of NCDs are related to unhealthy life styles. Insight into the relationship between health literacy and modifiable behavioral risk factors of NCDs may support the prevention and control of these diseases.Methods: A cross-sectional study was conducted among 1367 adults. Multi-stage random sampling was used. Data entry and analysis was done using Stata 11.0 statistical package. Multiple logistic regression analysis was applied to assess the association between health literacy and behavioral risk factors.Results: The proportion of participants who reported ever smoking, ever alcohol drinking and not-practicing daily-exercise was 19.8%, 16.2% and 85.2%, respectively. The prevalence of satisfactory level of health literacy was 31.5%. Health literacy was significantly related to behavioral risk factors even if age, sex, education status and monthly household’s expenditure were adjusted. By improving the health literacy status of adults up to satisfactory level, the prevalence of ever smoking, ever drinking and not-practicing daily exercise among them would be reduced by 34%, 32.1% and 38.9%, respectively.Conclusions: Health literacy status of community should be assessed, monitored and improved. Health literacy may be an effective tool in prevention and control of NCDs because of its preventive effect on modifiable behavioral risk factors.

Investigation of Japanese Encephalitis Virus Infection in Bogalay Township, Myanmar in 1999

An investigation was in Nyi-naung-wa village, Bogalay township for Japanese encephalitis (JE) virus infection and the possibility of a JE outbreak. JE virus antibody was determined among the pigs and the people living near the pig farms in that village and at an adjacent village as a control. The known JE virus vector Culex mosquito species were also identified in both villages. Haemagglutination inhibition (HAI) methods were used for the detectioon of JE and dengue antibodies. Homotypic or monotypic JE antibodies were detected in 33% of the pigs tested. No homotypic nor monotypic JE antibodis was detected among the villagers. Although there was no JE virus infection among the people, because of the presence of JE virus infection among the pigs and the presence of Culex mosquito vector in that area, the possibility of a JE outbreak in humans in that area, if the number of pig breeding per household increase and the mosquito density become higher is discussed

Age Related Changes in Hematological Values of Myanmar Local Puppies

The hematological parameters were used to monitor the health status and its components also changed according to the ages. However, there were no reports for this issues in Myanmar local dogs. Thus, this study was carried out to investigate the age-related changes on the hematological parameters of local puppies in Myanmar. Ten local puppies with the age of 2-3 month old were used in this experiment, which was lasted for 8 weeks.The daily clinical examinations were conducted throughout the entire experimental period for general health check-up. Haematological parameters (Total WBC count and its differential counts, and RBC, HCT, MCV, HGB, MCH, MCHC and platelets) were measured bi-weekly with Abacus Vet-5 automate haematology analyser. According to the results, the total WBC and eosinophil counts were not significantly different (P>0.05), while lymphocytes, monocytes, neutrophils and basophils were significantly different (P<0.05) with the aging of experimental animals. The values of RBC, HGB, HCT, MCV, MCH, MCHC and platelets were not significantly different (P>0.05) throughout the experimental periods. Thus, the age-related changes were observed on cell counts of lymphocytes, monocytes, neutrophils, basophils in Myanmar local puppies

Determination of Oncogenic Human Papillomavirus (HPV) Genotypes in Anogenital Cancers in Myanmar

Molecular and epidemiologic investigations suggest a causal role for human papillomavirus (HPV) in anogenital cancers. This study identified oncogenic HPV genotypes in anogenital cancers among men and women in a 2013 cross-sectional descriptive study in Myanmar. In total, 100 biopsy tissues of histologically confirmed anogenital cancers collected in 2008-2012 were studied, including 30 penile and 9 anal cancers from Yangon General Hospital and 61 vulvar cancers from Central Women's Hospital, Yangon. HPV-DNA testing and genotyping were performed by polymerase chain reaction-restriction fragment length polymorphism. Overall, 34% of anogenital cancers were HPV-positive. HPV was found in 44.4% of anal (4/9), 36.1% of vulvar (22/61), and 26.7% of penile (8/30) cancers. The most frequent genotypes in anal cancers were HPV 16 (75%) and 18 (25%). In vulvar cancers, HPV 33 was most common (40.9%), followed by 16 (31.8%), 31 (22.7%), and 18 (4.6%). In penile cancers, HPV 16 (62.5%) was most common, followed by 33 (25%) and 18 (12.5%). This is the first report of evidencebased oncogenic HPV genotypes in anogenital cancers among men and women in Myanmar. This research provides valuable information for understanding the burden of HPV-associated cancers of the anus, penis, and vulva and considering the effectiveness of prophylactic HPV vaccination

Rare Influenza A (H3N2) Variants with Reduced Sensitivity to Antiviral Drugs

In 2007 and 2008 in Myanmar, we detected influenza viruses A (H3N2) that exhibited reduced sensitivity to both zanamivir and amantadine. These rare and naturally occurring viruses harbored a novel Q136K mutation in neuraminidase and S31N mutation in M2