カイミジンコ毒性試験とTIE手法を用いた粒径分画した都市道路塵埃の毒性要因評価

学位の種別:課程博士University of Tokyo(東京大学

Factors associated with early initiation of breastfeeding in Western Nepal

The initiation of breastfeeding within one hour of birth has numerous nutritional and immunological benefits and has been found to reduce neonatal mortality. This community-based prospective cohort study aimed to report the rate of, and factors associated with, early initiation of breastfeeding in Western Nepal. The rate of early initiation of breastfeeding was reported, and associations between early initiation and independent variables were tested by Chi-square test, followed by multiple logistic regression. Of the 735 mother-infant pairs, a total of 310 (42.2%) reported early initiation. Mothers who were assisted by traditional attendants during childbirth, delivered by caesarean section, from ethnically disadvantaged families and had delivered low birth weight infants, were less likely to initiate breastfeeding early whereas the mothers who were from the poorest families and did not introduce prelacteal feeds to their infants were more likely to initiate breastfeeding within the first hour. Skills-training to support breastfeeding as part of the training of skilled birth attendants and other health workers is likely to promote recommended infant feeding practices

‘MATRI-SUMAN’ a capacity building and text messaging intervention to enhance maternal and child health service utilization among pregnant women from rural Nepal: study protocol for a cluster randomised controlled trial

Background Capacity development of health volunteers and text messaging to pregnant women through mobile phones have shown improved maternal and child health (MCH) outcomes and is associated with increased utilisation of MCH services. However, such interventions are uncommon in Nepal. We aim to carry out an intervention with the hypothesis that capacity building and text messaging intervention will increase the MCH service utilisation. Method/design MATRI-SUMAN is a 12-month cluster randomized controlled trial (RCT). The trial involves pregnant women from 52 clusters of six village development committees (VDCs) covering 66,000 populations of Dhanusha district of Nepal. In the intervention clusters, Female Community Health Volunteers (FCHVs) will receive capacity development skills through reinforcement training, supervision and monitoring skills for the promotion of health seeking behaviour among pregnant women and study participants will receive periodic promotional text messaging service about MCH components through mobile phones. A sample of 354with equal numbers in each study arm is estimated using power calculation formula. The primary outcomes of this study are the rate of utilization of skilled birth attendants and consumption of a specified diversified meal. The secondary outcomes are: four antenatal (ANC) visits, weight gain of women during pregnancy, delivery of a baby at the health facility, postnatal care (PNC) visits, positive changes in child feeding practices among mothers, performance of FCHVs in MCH service utilization. Discussion The intervention is designed to enhance the capacity of health volunteers for the promotion of health seeking behaviour among pregnant women and text messaging through a mobile phone to expecting mothers to increase MCH service utilization. The trial if proven effective will have policy implications in poor resource settings. Trial registration ISRCTN60684155, (https://doi.org/10.1186/ISRCTN60684155). The trial was registered retrospectively

Factors Associated with Exclusive Breastfeeding in Timor-Leste: Findings from Demographic and Health Survey 2009-2010

Exclusive breastfeeding is known to have nutritional and health benefits. This study investigated factors associated with exclusive breastfeeding among infants aged five months or less in Timor-Leste.The latest data from the national Demographic and Health Survey 2009-2010 were analyzed by binary logistic regression. Of the 975 infants included in the study, overall 49% (95% confidence interval 45.5% to 52.7%) were exclusively breastfed. The exclusive breastfeeding prevalence declined with increasing infant age, mothers with a paid occupation, who perceived their newborn as non-average size, and residence in the capital city Dili, was associated with a lower likelihood of exclusive breastfeeding. On the other hand, women who could decide health-related matters tended to breastfeed exclusively, which was not the case for others whose decisions were made by someone else. The results suggested the need of breastfeeding promotion programs to improve the exclusive breastfeeding rate. Antenatal counseling, peer support network, and home visits by health workers could be feasible options to promote exclusive breastfeeding given that the majority of births occur at home

Molecular dynamics study of structural properties of γ-aminobutyric acid (GABA)

The study of the structural conformation of Gamma-aminobutyric acid (GABA) exhibits its biological and chemical activities. The GABA molecule is responsible for neurotransmission from one neuron to another neuron and activates the ion channels to pass the chlorine and sodium ions in nerve cells. Its conformation in the solid-state and gas state are extremely different and it also shows five different conformations in an aqueous solution. The study of its structure in such an environment can reveal its activity in the cellular environment. We have performed the classical molecular dynamics study of this system of GABA in the aqueous medium to deal with its structure. Radial distribution function (RDF) has been used to study the structural properties of the system. BIBECHANA 18 (1) (2021) 67-7

Molecular dynamics study of structural properties of γ-aminobutyric acid (GABA)

The study of the structural conformation of Gamma-aminobutyric acid (GABA) exhibits its biological and chemical activities. The GABA molecule is responsible for neurotransmission from one neuron to another neuron and activates the ion channels to pass the chlorine and sodium ions in nerve cells. Its conformation in the solid-state and gas state are extremely different and it also shows five different conformations in an aqueous solution. The study of its structure in such an environment can reveal its activity in the cellular environment. We have performed the classical molecular dynamics study of this system of GABA in the aqueous medium to deal with its structure. Radial distribution function (RDF) has been used to study the structural properties of the system. BIBECHANA 18 (1) (2021) 67-7

A Review on Ayurvedic Medicinal Herbs as Remedial Perspective for COVID-19

Introduction: Recent outbreaks in a new type of coronavirus, novel coronavirus (COVID-19) disease causing respiratory infection have significantly hampered the public health. Medicinal plants used in traditional practices provide enormous scope to bring out viable alternatives against viral diseases, considering non-availability of suitable drug and increasing resistance to existing drug as well as re-emerging viral diseases. The present review on use of plants and related phytochemicals for the treatment of viral diseases particularly COVID-19, preclinical and clinical information is increased concern Methods: The methodological activities involved during a literature review were; (1) designing the review concept, (2) conducting the review on review papers, research papers, bulletins, official websites, (3) analysis of previous publications and (4) writing up the review paper. The integrative literature review and paper preparation process was done from our own practical experience and influenced by various standards and guidelines suggested in the publications. Results: Herbal medicines and their active phytochemicals against some viral pathogens including severe acute respiratory syndrome (SARS), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) the virus that causes COVID-19 pandemic, middle east respiratory syndrome (MERS-COV), rhinovirus, human herpes virus (HSV-I & II), human immunodeficiency virus (HIV), coxsackievirus (CV), enterovirus 71 (EV71), hepatitis B virus (HBV), hepatitis C virus (HCV), herpes simplex virus, influenza A/H1N1 virus, coronavirus (CoV) etc were extensively reviewed. Ayurvedic herbal products could be useful to select as an alternative and integrated approach to decrease the morbidity and mortality associated with coronavirus infection and enhance host immunity against viral attack in the context of treatment vaccine of COVID-19 could be years away. Conclusion: The traditional practices and scientific evidence of several medicinal herbs and their phytochemicals against lethal viral infections in-vivo and in-vitro studies could be useful for the future as a novel source of natural products in particular focus on COVID-19

Poor Thermal Care Practices among Home Births in Nepal: Further Analysis of Nepal Demographic and Health Survey 2011

Introduction - Hypothermia is a major factor associated with neonatal mortality in low and middle income countries. Thermal care protection of newborn through a series of measures taken at birth and during the initial days of life is recommended to reduce the hypothermia and associated neonatal mortality. This study aimed to identify the prevalence of and the factors associated with receiving ‘optimum thermal care’ among home born newborns of Nepal. Methods - Data from the Nepal Demographic and Health Surveys (NDHS) 2011 were used for this study. Women who reported a home birth for their most recent childbirth was included in the study. Factors associated with optimum thermal care were examined using Chi-square test followed by logistic regression. Results - A total of 2464 newborns were included in the study. A total of 57.6 % were dried before the placenta was delivered; 60.3% were wrapped; 24.5% had not bathing during the first 24 hours, and 63.9% were breastfed within one hour of birth. Overall, only 248 (10.7%; 95% CI (8.8 %, 12.9%)) newborns received optimum thermal care. Newborns whose mothers had achieved higher education (OR 2.810; 95% CI (1.132, 6.976)), attended four or more antenatal care visits (OR 2.563; 95% CI (1.309, 5.017)), and those whose birth were attended by skilled attendants (OR 2.178; 95% CI (1.428, 3.323)) were likely to receive optimum thermal care. Conclusion - The current study showed that only one in ten newborns in Nepal received optimum thermal care. Future newborn survival programs should focus on those mothers who are uneducated; who do not attend the recommended four or more attend antenatal care visits; and those who deliver without the assistance of skilled birth attendants to reduce the risk of neonatal hypothermia in Nepal

Low Compliance with Iron-Folate Supplementation Among Postpartum Mothers of Nepal: An Analysis of Nepal Demographic and Health Survey 2011

One in five maternal deaths are directly attributable to anaemia in the world. The World Health Organization recommends iron supplementation from the second trimester of pregnancy to 45 days after delivery. The aim of this study was to determine the compliance rate of iron-folate consumption and the factors associated with iron-folate consumption among post-natal mothers in Nepal. This study utilised the data of Nepal Demographic and Health Survey (NDHS) 2011. The NDHS 2011 is a cross sectional and nationally representative survey. Of the 4,148 respondents, only 20.7 % consumed iron throughout the post-natal period for 45 days. Mothers who had higher and secondary education [adjusted Odd ratio (aOR) 3.101; 95 % CI (2.268–4.240)]; had attended four or more antenatal care visits [aOR 9.406; 95 % CI (5.552–15.938)]; lived in Far-western development region [aOR 1.822; 95 % CI (1.387–2.395)]; delivered in health facility [aOR 1.335; 95 % CI (1.057–1.687)]; and attended postnatal care [aOR 2.348; 95 % CI (1.859–2.965)] were more likely to take iron for 45 days of postpartum. Intervention to increase the compliance with the postpartum iron-folate supplementation are required to avoid adverse pregnancy outcomes associated with poor iron status with especial focus on the mothers who delivered at homes and did not attend postnatal check up