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1.
N Engl J Med ; 383(26): 2514-2525, 2020 12 24.
Artículo en Inglés | MEDLINE | ID: mdl-33095526

RESUMEN

BACKGROUND: The safety and efficacy of antenatal glucocorticoids in women in low-resource countries who are at risk for preterm birth are uncertain. METHODS: We conducted a multicountry, randomized trial involving pregnant women between 26 weeks 0 days and 33 weeks 6 days of gestation who were at risk for preterm birth. The participants were assigned to intramuscular dexamethasone or identical placebo. The primary outcomes were neonatal death alone, stillbirth or neonatal death, and possible maternal bacterial infection; neonatal death alone and stillbirth or neonatal death were evaluated with superiority analyses, and possible maternal bacterial infection was evaluated with a noninferiority analysis with the use of a prespecified margin of 1.25 on the relative scale. RESULTS: A total of 2852 women (and their 3070 fetuses) from 29 secondary- and tertiary-level hospitals across Bangladesh, India, Kenya, Nigeria, and Pakistan underwent randomization. The trial was stopped for benefit at the second interim analysis. Neonatal death occurred in 278 of 1417 infants (19.6%) in the dexamethasone group and in 331 of 1406 infants (23.5%) in the placebo group (relative risk, 0.84; 95% confidence interval [CI], 0.72 to 0.97; P = 0.03). Stillbirth or neonatal death occurred in 393 of 1532 fetuses and infants (25.7%) and in 444 of 1519 fetuses and infants (29.2%), respectively (relative risk, 0.88; 95% CI, 0.78 to 0.99; P = 0.04); the incidence of possible maternal bacterial infection was 4.8% and 6.3%, respectively (relative risk, 0.76; 95% CI, 0.56 to 1.03). There was no significant between-group difference in the incidence of adverse events. CONCLUSIONS: Among women in low-resource countries who were at risk for early preterm birth, the use of dexamethasone resulted in significantly lower risks of neonatal death alone and stillbirth or neonatal death than the use of placebo, without an increase in the incidence of possible maternal bacterial infection. (Funded by the Bill and Melinda Gates Foundation and the World Health Organization; Australian and New Zealand Clinical Trials Registry number, ACTRN12617000476336; Clinical Trials Registry-India number, CTRI/2017/04/008326.).


Asunto(s)
Dexametasona/administración & dosificación , Glucocorticoides/administración & dosificación , Enfermedades del Prematuro/prevención & control , Muerte Perinatal/prevención & control , Atención Prenatal , Adulto , Países en Desarrollo , Femenino , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Recien Nacido Prematuro , Enfermedades del Prematuro/epidemiología , Inyecciones Intramusculares , Embarazo , Nacimiento Prematuro , Riesgo , Mortinato/epidemiología
2.
J Peripher Nerv Syst ; 28(4): 564-577, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37698165

RESUMEN

BACKGROUND AND AIMS: Considerable variation in clinical practice for management of Guillain-Barré syndrome (GBS) has been observed worldwide. Diagnosis and treatment are challenging in low- and middle-income countries (LMIC) due to lack of facilities and treatment availability. We aimed to evaluate current clinical practice and limitations and to provide recommendation for GBS management in low-resource settings. METHODS: We conducted an explanatory-sequential mixed-methods survey among neurologists and internists working in tertiary and secondary government hospitals in Bangladesh. There were two phases: (1) quantitative (cross-sectional survey to evaluate clinical practice and limitations); (2) qualitative (key informant interview to explain certain clinical practice and provide recommendations for GBS management in LMIC). Data were analyzed by frequencies, χ2 test and thematic analysis. RESULTS: Among 159 physicians (65 neurologists and 94 internists), 11% and 8% physicians used Brighton and NINDS criteria respectively to diagnose GBS. Specific treatment protocols of GBS were used by 12% physicians. Overcrowding of patients, inadequate diagnostic facilities, high costs of standard therapy, and inadequate logistics and trained personnel for intensive care unit and rehabilitation services were considered major challenges for GBS management. In qualitative part, respondents recommended regular training for the physicians, development of cost-effective treatment strategies and appropriate patients' referral and management guideline considering existing limitations in health service delivery and socio-economic status of the country. INTERPRETATION: Current study design and recommendations might be applied for other LMIC. Such data can assist policymakers to identify areas requiring urgent attention and take required action to improve GBS management in LMIC.


Asunto(s)
Síndrome de Guillain-Barré , Humanos , Síndrome de Guillain-Barré/diagnóstico , Síndrome de Guillain-Barré/epidemiología , Síndrome de Guillain-Barré/terapia , Países en Desarrollo , Bangladesh/epidemiología , Estudios Transversales , Neurólogos
3.
BMC Public Health ; 23(1): 405, 2023 02 28.
Artículo en Inglés | MEDLINE | ID: mdl-36855076

RESUMEN

BACKGROUND: This study developed and validated an integrated metric that enhances understanding of linkages between agro-ecological and socio-economic factors that are important for explaining nutritional wellbeing in relation to fish consumption; especially among adolescent girls who are at risk of nutritional deficiency in Bangladesh. Currently, there is no metric that takes account of environmental, cultural and economic contexts when considering fish consumption and dietary health from a policy perspective. METHODS: The study was designed as a bi-seasonal survey, repeated in the same population of adolescent girls recruited during the dry and wet seasons. Sampling was stratified by five settings (four aqua-agroecological zones and one processing plant community), with 60 girls recruited in each. Associations between candidate predictors (salinity, diet diversity, religion, socio-economic status and women's autonomy score) and dependent variables representing nutritional outcomes (anthropometry, omega-3 index and micronutrient levels) were explored in multivariable regressions. The fitted model with its predictors was validated, and a risk score derived from responses to a few short questions on religion, salinity zone, female autonomy, diet diversity and tilapia consumption. RESULTS: The omega-3 index showed the clearest distinction between seasons, by salinity and religion. Higher female autonomy, religion (being Hindu rather than Muslim), geographical location (living in a high or mid-saline area), and a higher dietary diversity were the strongest predictors of whole blood omega-3 index. The c-index for the prognostic model was 0.83 and 0.76 in the wet and dry season respectively, indicating good predictive accuracy. There appeared to be a clear trend in risk scores differentiating between those 'chronically at risk' and those 'never at risk'. CONCLUSIONS: Observational data on different aquaculture-ecozones defined by salinity enabled us to establish linkages between seasonal fish intake, religion, diet diversity, female autonomy and nutritional wellbeing. The purpose of the metric is to reveal these specific linkages in practice. This tool should improve targeting of timely, preventative and cost-effective nutritional interventions to adolescent girls most at-risk from low omega-3 levels in communities where seafood is produced.


Asunto(s)
Acuicultura , Islamismo , Femenino , Humanos , Animales , Bangladesh/epidemiología , Factores de Riesgo , Nutrientes
4.
J Peripher Nerv Syst ; 26(1): 83-89, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33555098

RESUMEN

Guillain-Barré syndrome (GBS) is the most common cause of acute flaccid paralysis in children. The objective of this study was to investigate the preceding infections, clinical, serological and electrophysiological characteristics and outcome of childhood GBS in Bangladesh. We included 174 patients with GBS aged <18 years from a prospective cohort in Bangladesh between 2010 and 2018. We performed multivariate logistic regression to determine the risk factors for poor outcome. Among 174 children with GBS, 74% (n = 129) were male. Around half of the patients (49%, n = 86) had severe muscle weakness, 65% (n = 113) were bedbound (GBS disability score 4) and 17% (n = 29) patients required mechanical ventilation at admission. Campylobacter jejuni serology and anti-GM1 IgG antibody were positive in 66% and 21% of the patients respectively. One hundred and forty-three (82%) patients did not receive standard treatment and half of them recovered fully or with minor deficits at 6-month. Twenty patients (11%) died throughout the study period. At 3-month of onset of weakness, complete recovery or recovery with minor deficit was significantly higher in demyelinating GBS patients compared to axonal GBS patients (86% vs 51%, P = .001). Cranial nerve palsy (OR = 4.00, 95%CI = 1.55-10.30, P = .004) and severe muscle weakness (OR = 0.16, 95%CI = 0.06-0.45, P = .001) were the important risk factors of poor outcome in children with GBS. Further large-scale studies are required for better understanding of factors associated with mortality and morbidity in childhood GBS.


Asunto(s)
Anticuerpos Antibacterianos/sangre , Autoanticuerpos/sangre , Enfermedades de los Nervios Craneales , Síndrome de Guillain-Barré , Debilidad Muscular , Adolescente , Bangladesh , Campylobacter jejuni/inmunología , Niño , Preescolar , Enfermedades de los Nervios Craneales/diagnóstico , Enfermedades de los Nervios Craneales/etiología , Enfermedades de los Nervios Craneales/fisiopatología , Femenino , Gangliósidos/inmunología , Síndrome de Guillain-Barré/sangre , Síndrome de Guillain-Barré/complicaciones , Síndrome de Guillain-Barré/diagnóstico , Síndrome de Guillain-Barré/fisiopatología , Humanos , Lactante , Masculino , Debilidad Muscular/diagnóstico , Debilidad Muscular/etiología , Debilidad Muscular/fisiopatología , Pronóstico , Estudios Prospectivos , Factores de Riesgo , Análisis de Supervivencia
5.
J Peripher Nerv Syst ; 25(4): 335-343, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33112450

RESUMEN

Several published reports have described a possible association between Guillain-Barré syndrome (GBS) and severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection. This systematic review aimed to summarize and meta-analyze the salient features and prognosis of SARS-CoV-2-associated GBS. We searched the PubMed (Medline), Web of Science and Cochrane databases for articles published between 01 January 2020 and 05 August 2020 using SARS-CoV-2 and GBS-related keywords. Data on sociodemographic characteristics, antecedent symptoms, clinical, serological and electrophysiological features, and hospital outcomes were recorded. We included 45 articles from 16 countries reporting 61 patients with SARS-CoV-2-associated GBS. Most (97.7%) articles were from high- and upper-middle-income countries. Forty-two (68.9%) of the patients were male; median (interquartile range) age was 57 (49-70) years. Reverse transcriptase polymerase chain reaction for SARS-CoV-2 was positive in 90.2% of patients. One report of SARS-CoV-2-associated familial GBS was found which affected a father and daughter of a family. Albuminocytological dissociation in cerebrospinal fluid was found in 80.8% of patients. The majority of patients (75.5%) had a demyelinating subtype of GBS. Intravenous immunoglobulin and plasmapheresis were given to 92.7% and 7.3% of patients, respectively. Around two-thirds (65.3%) of patients had a good outcome (GBS-disability score ≤ 2) on discharge from hospital. Two patients died in hospital. SARS-CoV-2-associated GBS mostly resembles the classical presentations of GBS that respond to standard treatments. Extensive surveillance is required in low- and lower-middle-income countries to identify and report similar cases/series. Further large-scale case-control studies are warranted to strengthen the current evidence. PROSPERO Registration Number CRD42020201673.


Asunto(s)
COVID-19/complicaciones , Síndrome de Guillain-Barré/virología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , SARS-CoV-2
6.
BMC Public Health ; 20(1): 1776, 2020 Nov 25.
Artículo en Inglés | MEDLINE | ID: mdl-33238946

RESUMEN

BACKGROUND: Undernutrition is strongly associated with poverty - levels of undernutrition are higher in poor countries than in better-off countries. Social protection especially cash transfer is increasingly recognized as an important strategy to accelerate progress in improving maternal and child nutrition. A critical method to improve nutrition knowledge and influence feeding practices is through behaviour change communication intervention. The Shonjibon Cash and Counselling study aims to assess the effectiveness of unconditional cash transfers combined with a mobile application on nutrition counselling and direct counselling through mobile phone in reducing the prevalence of stunting in children at 18 months. METHOD: The study is a longitudinal cluster randomised controlled trial, with two parallel groups, and cluster assignment by groups of villages. The cohort of mother-child dyads will be followed-up over the intervention period of approximately 24 months, starting from recruitment to 18 months of the child's age. The study will take place in north-central Bangladesh. The primary trial outcome will be the percentage of stunted children at 18 m as measured in follow up assessments starting from birth. The secondary trial outcomes will include differences between treatment arms in (1) Mean birthweight, percentage with low birthweight and small for gestational age (2) Mean child length-for age, weight for age and weight-for-length Z scores (3) Prevalence of child wasting (4) Percentage of women exclusively breastfeeding and mean duration of exclusive breastfeeding (5) Percentage of children consuming > 4 food groups (6) Mean child intake of energy, protein, carbohydrate, fat and micronutrients (7) Percentage of women at risk of inadequate nutrient intakes in all three trimesters (8) Maternal weight gain (9) Household food security (10) Number of events for child suffering from diarrhoea, acute respiratory illness and fever (11) Average costs of mobile phone BCC and cash transfer, and benefit-cost ratio for primary and secondary outcomes. DISCUSSION: The proposed trial will provide high-level evidence of the efficacy and cost-effectiveness of mobile phone nutrition behavior change communication, combined with unconditional cash transfers in reducing child undernutrition in rural Bangladesh. TRIAL REGISTRATION: The study has been registered in the Australian New Zealand Clinical Trials Registry ( ACTRN12618001975280 ).


Asunto(s)
Trastornos de la Nutrición del Niño/prevención & control , Consejo , Aplicaciones Móviles , Asistencia Pública , Salud Rural/estadística & datos numéricos , Adolescente , Adulto , Bangladesh/epidemiología , Teléfono Celular , Trastornos de la Nutrición del Niño/epidemiología , Preescolar , Femenino , Estudios de Seguimiento , Trastornos del Crecimiento/epidemiología , Trastornos del Crecimiento/prevención & control , Humanos , Lactante , Masculino , Persona de Mediana Edad , Embarazo , Adulto Joven
7.
Matern Child Nutr ; 16 Suppl 3: e13017, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33347719

RESUMEN

This narrative review aims to provide an interdisciplinary perspective on actors that link global aquatic food production systems with fish consumption and nutritional status, with a special focus on adolescent girls in Bangladesh. The writing of this narrative perspective was undertaken within the framework of the Aquatic Food for Health and Nutrition (AQN) project that aimed to develop a metric for assessing the impacts on nutrition and health of agroecosystems producing farmed seafood. Previous studies evaluating links between agricultural ecosystems, aquaculture, food security and human health have systemically ignored the importance of diet and nutrition. Such studies have also ignored the importance of local communities, cultural norms and household composition and behaviours to identify vulnerable groups such as adolescent girls. This narrative review presents our current understanding of the relationships between aquaculture, fish production and consumption patterns, food security, optimal nutrition and health. It also highlights the importance of research into aquaculture food systems, linking aquatic food production systems with nutritional status, health and socioeconomic prosperity, which would help to develop more integrated and relevant food policies.


Asunto(s)
Ecosistema , Estado Nutricional , Adolescente , Salud del Adolescente , Animales , Bangladesh , Femenino , Seguridad Alimentaria , Abastecimiento de Alimentos , Humanos , Alimentos Marinos/análisis
8.
BMC Public Health ; 19(1): 1437, 2019 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-31675943

RESUMEN

BACKGROUND: The period from birth to two years is the "critical window" for achieving optimal growth and development. An inadequate quality and quantities of complementary foods, poor child-feeding practices and infection negatively impact the growth of under-twos. Approximately one-third of under-fives in developing countries are stunted; many are also micronutrient deficient. An estimated 6% of mortalities among under-fives can be prevented by ensuring optimal complementary feeding. The objective of the study was to assess the ability of a 12-month integrated nutrition intervention to improve the nutritional status (length-for-age Z-score) of 6 to 12-month-old children in rural Bangladesh. METHODS: In this community-based randomized controlled trial, the intervention group received a package of interventions that includes, food vouchers; to prepare egg-based nutritious snacks (suji firni for < 1-year-olds, suji halwa for > 1-year-olds), micronutrient powder to fortify children's food at home, child feeding counselling and water, sanitation and hygiene (WASH), behaviour change communication. The control group received routine health messages provided by the government. Baseline and endline surveys were conducted; Data collection was performed monthly on children's growth, food voucher utilization, child feeding and morbidity. In addition, we assessed the cognitive development of the children after 12 months of intervention. CONCLUSION: This trial aims to explore whether an integrated nutrition intervention can mitigate childhood stunting during the critical window of opportunity in rural Bangladesh. The results may provide robust evidence to improve the linear growth of children in developing countries. TRIAL REGISTRATION: The study was retrospectively registered on August 17, 2018 and is available online at ClinicalTrials.gov (ID: NCT02768181).


Asunto(s)
Trastornos del Crecimiento/prevención & control , Promoción de la Salud/métodos , Fenómenos Fisiológicos Nutricionales del Lactante , Estado Nutricional , Población Rural/estadística & datos numéricos , Bangladesh , Humanos , Lactante , Evaluación de Programas y Proyectos de Salud , Proyectos de Investigación
9.
Matern Child Nutr ; 14(3): e12605, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29660858

RESUMEN

This study aimed to evaluate the impact of peer counselling on early initiation of breastfeeding (EIBF) and exclusive breastfeeding (EBF) rates for mother-infant pairs living in urban slums, Dhaka, Bangladesh. This randomized controlled trial enrolled 350 mother-infant pairs from selected slums between September 2014 and July 2016. The women assigned to intervention group received peer counselling from locally recruited, trained community female volunteers starting in third trimester of pregnancy until 6 months after delivery; control group received no intervention. EIBF, any liquids given after birth, and EBF were compared between groups. Follow-up was scheduled at enrolment, following childbirth, and every 2 months up to 6 months after delivery. Multiple logistic regressions were used to assess the effect peer counselling and other associated factors on EIBF and EBF practices. EIBF rate was higher in the intervention group than in the control group (89.1% vs. 77.4%, p = .005). More mothers in intervention group were exclusively breastfeeding at 5 months than mothers in the control group (73% vs. 27%, p < .005). Control mothers were twice as likely to not practice EIBF compared with intervention mothers (adjusted odds risk [aOR]: 2.53, CI [1.29, 4.97], p = .007). Overall, caesarean section was associated with an 8.9-fold higher risk of not achieving EIBF (aOR: 8.90, CI [4.05, 19.55], p < .001). Intervention mothers were 5.10-fold more likely to practice EBF compared with control mothers (aOR: 5.10, CI [2.89, 9.01], p < .001) at 5 months. This study demonstrates peer counselling can positively influence both EIBF and EBF among mothers living in urban area.


Asunto(s)
Lactancia Materna , Consejo , Grupo Paritario , Adolescente , Adulto , Bangladesh , Análisis por Conglomerados , Femenino , Educación en Salud , Conocimientos, Actitudes y Práctica en Salud , Humanos , Persona de Mediana Edad , Madres , Áreas de Pobreza , Embarazo , Tercer Trimestre del Embarazo , Estudios Prospectivos , Tamaño de la Muestra , Factores Socioeconómicos , Adulto Joven
10.
J Peripher Nerv Syst ; 22(2): 121-126, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-28447405

RESUMEN

Although Guillain-Barré syndrome (GBS) has higher incidence and poor outcome in Bangladesh, mortality from GBS in Bangladesh has never been explored before. We sought to explore the frequency, timing, and risk factors for deaths from GBS in Bangladesh. We conducted a prospective study on 407 GBS patients who were admitted to Dhaka Medical College Hospital, Dhaka, Bangladesh from 2010 to 2013. We compared deceased and alive patients to identify risk factors. Cox regression model was used to adjust for confounders. Of the 407 GBS patients, 50 (12%) died, with the median time interval between the onset of weakness and death of 18 days. Among the fatal cases, 24 (48%) were ≥40 years, 36 (72%) had a Medical Research Council sum score ≤20 at entry, 33 (66%) had a progressive phase <8 days, and 27 (54%) required ventilation support. Ten patients (20%) died due to unavailability of ventilator. The strongest risk factor for deaths was lack of ventilator support when it was required (HR: 11.9; 95% confidence interval [CI]: 4.6-30.7). Other risk factors for death included age ≥40 years (HR: 5.9; 95% CI: 2.1-16.7), mechanical ventilation (HR: 2.3; 95% CI: 1.02-5.2), longer progressive phase (>8 days) (HR: 2.06; 95% CI: 1.1-3.8), autonomic dysfunction (HR: 1.9; 95% CI: 1.05-3.6), and bulbar nerve involvement (HR: 5.4; 95% CI: 1.5-19.2). In Bangladesh, GBS is associated with higher mortality rates, which is related to lack of ventilator support, disease severity, longer progressive phase of the disease, autonomic dysfunction, and involvement of the bulbar nerves.


Asunto(s)
Síndrome de Guillain-Barré/epidemiología , Síndrome de Guillain-Barré/mortalidad , Adolescente , Adulto , Distribución por Edad , Bangladesh/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
11.
Pak J Pharm Sci ; 29(6): 1977-1983, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-28375113

RESUMEN

Staphylococcus aureus is a nosocomial pathogen that resides in the soft tissues causing many diseases. The current study was conducted to determine the prevalence of Methicillin Resistant S. aureus (MRSA) in ear discharge and pus of patients and antibacterial activity of crude methanolic extract (Cr. MeOH Ext.) and various fractions of M. Africana and V. agnus castus against clinical isolates of MRSA. A total of 40 samples were collected from ear, nose and throat (ENT) outpatient department and wards of Khyber Teaching Hospital (KTH), Peshawar. Out of 40 samples, 36 (90%) samples showed growth on Mannitol Salt Agar (MSA) media out of which 9(25%) were MRSA and the remaining 27(75%) were methicillin susceptible S. aureus (MSSA). A good antibacterial activity was observed for the Cr. MeOH Ext. (76.1%) and ethyl acetate (EtOAc) fraction of V. agnus castus against S11 (71.4%). The n-hexane fraction also showed good antibacterial effect (70%) against S26. The chloroform (CHCl3), butanol (BuOH) and aqueous fractions of M. africana showed good antibacterial activity against S11 (71.4%), S32 (70%) and S26 (75%), respectively. The above results revealed that the selected plants can be further utilized for isolation of the active ingredients as the crude extracts were found good for inhibition of MRSA.


Asunto(s)
Antibacterianos/farmacología , Medicamentos Herbarios Chinos/farmacología , Metanol/química , Staphylococcus aureus Resistente a Meticilina/efectos de los fármacos , Primulaceae/química , Solventes/química , Vitex/química , Acetatos/química , Antibacterianos/aislamiento & purificación , Butanoles/química , Cloroformo/química , Pruebas Antimicrobianas de Difusión por Disco , Medicamentos Herbarios Chinos/aislamiento & purificación , Hexanos/química , Hospitales de Enseñanza , Humanos , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación , Pakistán , Fitoterapia , Componentes Aéreos de las Plantas/química , Plantas Medicinales , Agua/química
12.
Heliyon ; 10(15): e34887, 2024 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-39170397

RESUMEN

The partial replacement of conventional natural coarse aggregate (NCA) with artificial light weight aggregate (LWA) manufactured from local clay and solid waste to develop a lightweight aggregate concrete (LWAC) for the structural use was studied in this paper. Red clay and Savar clay were used individually with solid wastes like rice husk ash (RHA) and waste glass to produce LWA. The suitability of raw materials and LWA was evaluated by investigating various properties. The mechanical, thermal and durability properties of manufactured LWAC were explored. The results of physical, chemical, thermal and geotechnical properties revealed that Red clay is better than Savar clay for the preparation of LWA. All the physical and mechanical properties of LWA prepared from Red clay are suitable for the preparation of LWAC compared to Savar clay. The test results demonstrated that the concrete manufactured by replacing 30 % of NCA with LWA produced a concrete of lightweight properties. The compressive strength of LWAC for 7 and 28 days was observed as 28 and 48 MPa, respectively. The results of modulus of elasticity, splitting tensile strength, flexural deformation, and creep test of LWAC revealed that these mechanical properties meet the requirements for the structural concrete. The RCP test proves that chlorine permeability of LWAC is comparable with NCA. It was observed that the superior performance of LWAC can be achieved only when the optimized mix designed is followed strictly. The suitability of the replacement of natural aggregate by LWA may be helpful for Bangladesh due to the scarcity of natural coarse aggregate and reusability of solid waste materials.

13.
PLoS One ; 19(7): e0306183, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38985720

RESUMEN

Anaemia is a major public health concern in developing countries, particularly among children, adolescents, and women of reproductive age. The study aimed to assess the anaemia status among adolescent girls, pregnant, and lactating women with their contributing factors in the southern rural regions of Bangladesh. This cross-sectional study was conducted among 400 adolescent girls, 375 pregnant, and 375 lactating women using a multistage cluster-random sampling technique. Anaemia was measured through haemoglobin concentration in blood capillaries collected with a Hemocue 301 machine. Multinomial logistic regression was used to determine the factors associated with anaemia. The average age of pregnant and lactating women was 24 years and 15.2 years for girls. Overall, the prevalence of anaemia was 50% among pregnant women, 46% among lactating women, and 38% among adolescent girls. The risk of anaemia among adolescent girls was higher among non-Muslim (aOR = 2.13, 95%CI:1.05-4.31), belonged to families having >5 members (aOR = 2.24, 95%CI:1.16-4.31) while exposure to media reduced their risk (aOR = 0.33, 95%CI:0.15-0.74). Pregnant women who consumed a diversified diet, washed their hands after toilet, and received ≥4 ANC visits had a lower likelihood of developing anaemia. Lactating women who were employed, consumed a diversified diet, washed their hands before preparing food, and after toilet, had been exposed to media, received ≥4 ANC visits, and consumed ≥90 IFA, had a lower risk of developing anaemia. However, anaemia was more likely to be associated with lactating women who were non-Muslim (aOR = 3.75; 95%CI:1.26-11.22). The high prevalence of anaemia emphasizes the need to reconsider the existing strategy for the prevention and control of micronutrient deficiencies in Bangladesh.


Asunto(s)
Anemia , Lactancia , Población Rural , Humanos , Femenino , Bangladesh/epidemiología , Adolescente , Embarazo , Anemia/epidemiología , Factores de Riesgo , Población Rural/estadística & datos numéricos , Prevalencia , Adulto Joven , Estudios Transversales , Adulto
14.
Curr Pharm Biotechnol ; 24(1): 118-144, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-34970950

RESUMEN

In recent years, nanomaterials as photocatalysts have gained much popularity for the removal of organic pollutants from tainted water using photodegradation, since the available chemical, physical, and biological methods are often time consuming, involve high cost and dumping complications, sometimes posing serious threat to both human health and environmental elements. The use of nanomaterials is less expensive and does not, in general, form aggregated macromolecules. In addition, nanotechnology for waste-water treatment demolishes or alters the risky chemical wastes to harmless end products like H2O and CO2. Nanomaterials synthesized from natural resources or prepared using green synthetic routes are receiving a surge of interest as our consciousness of the ecological environment and safety rises. 'Green' materials of this kind might also show unique strength features and exceptional biodegradability, along with their other notable advantageous properties like a minimum threat to the environment, efficient recyclability and low cost compared to synthetic nanomaterials. Such green nanomaterials can also serve as nanocatalysts to treat toxic organic pollutants in a safer way, including photodegradation to less or non-toxic products. This article reviews the latest developments on the synthesis of some promising green nanomaterials aiming towards their efficient uses as photocatalysts for the degradation of organic pollutants. Strategies to find new green materials as photocatalysts through the modification of technologies and the development of novel methodologies for the safer treatment of organic pollutants will also be discussed.


Asunto(s)
Contaminantes Ambientales , Nanoestructuras , Purificación del Agua , Humanos , Contaminantes Ambientales/toxicidad , Nanotecnología , Fotólisis , Catálisis
15.
Sci Rep ; 13(1): 6631, 2023 04 24.
Artículo en Inglés | MEDLINE | ID: mdl-37095307

RESUMEN

Inadequate intake of both macro and micronutrients is the major determinant of micronutrient deficiencies in adolescent girls. This study assessed multiple micronutrient status including vitamin D, iron, vitamin A, and urinary iodine concentration among adolescent girls through two seasonal cross-sectional surveys conducted during dry and wet seasons. Mixed-effects linear and logistic regression analysis were conducted to assess associations between micronutrient status, salinity and seasonality. The mean age of the girls was 14 years. Vitamin (OH)D insufficiency was significantly higher in freshwater areas in wet season compared to dry season (wet season: 58% and dry season: 30%, P < 0.001). In wet season, risk of vitamin (OH)D insufficiency was three times higher compared to dry season (AOR: 3.03, 95% CI 1.71, 5.37, P < 0.001). The odds of vitamin (OH)D insufficiency was 11 times higher in fresh water areas compared to high saline areas (AOR: 11.51, 95% CI 3.40, 38.93, P < 0.001). The girls had higher risk of iron deficiency in wet season. Despite the environment being enriched with micronutrient-contained aquatic food, adolescent girls in coastal areas experience different micronutrient deficiencies. The high prevalence of vitamin (OH)D insufficiency in freshwater locations and seasonal iron deficiency in high saline areas needs attention.


Asunto(s)
Deficiencias de Hierro , Desnutrición , Oligoelementos , Femenino , Humanos , Adolescente , Micronutrientes , Bangladesh/epidemiología , Estudios Transversales , Vitaminas , Prevalencia , Estado Nutricional
16.
Drug Chem Toxicol ; 35(2): 119-26, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21995272

RESUMEN

In India, natural preparations derived from the plants are widely use for the treatments of various diseases. Hence, it becomes necessary to assess the modulating action of the plant extract when associated with other substances. Potassium canrenoate (PC) is a synthetic steroid and is used in the treatment of hypertension. It is not only a genotoxic agent, but also a tumor-initiating agent. In the present study, the effect of various doses (i.e., 5, 10, 20, and 30 µM) of PC were studied for their genotoxic effects in the presence of S9 mix in cultured human lymphocytes, using mitotic index, chromosomal aberrations, sister chromatid exchanges, and replication index as parameters. PC was found to be genotoxic at 20 and 30 µM. Treatment of 30 µM of PC was given along with different doses of Plumbago zeylanica extract (i.e., 107.5, 212.5, 315, and 417 µg/mL) of the culture medium. A dose-dependent decrease in the genotoxic effects of PC was observed. The result suggested that the plant extract per se does not have genotoxic potential, but can modulate the genotoxicity of PC in cultured human lymphocytes.


Asunto(s)
Ácido Canrenoico/toxicidad , Leucocitos Mononucleares/efectos de los fármacos , Mutágenos/toxicidad , Extractos Vegetales/farmacología , Plumbaginaceae/química , Ácido Canrenoico/antagonistas & inhibidores , Ciclo Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Aberraciones Cromosómicas/inducido químicamente , Aberraciones Cromosómicas/efectos de los fármacos , Interacciones Farmacológicas , Humanos , India , Extractos Vegetales/aislamiento & purificación , Intercambio de Cromátides Hermanas/efectos de los fármacos
17.
J Insect Sci ; 12: 92, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23427921

RESUMEN

In the present study the effect of 0.1, 0.2, 0.4, 0.8, and 1.0 µL/mL of the steroid K-canrenoate was evaluated in the third instar larvae of transgenic Drosophila melanogaster (hsp70-lacZ) Bg(9) for 6, 24, and 48 hours of duration. The treatment of 0.1, 0.2, and 0.4 µL/mL of K-canrenoate did not induce the activity of hsp70 significantly compared to the control. The treatments of 0.8 and 1.0 µL/mL of K-canrenoate not only caused tissue damage but also induced a significant increase in the expression of hsp70 for the different durations of exposure. The results of the present study suggest that the K-canrenoate at 0.8 and 1.0 µL/mL is cytotoxic and caused tissue damage in the third instar larvae of transgenic D. melanogaster (hsp70-lacZ) Bg(9).


Asunto(s)
Ácido Canrenoico/farmacología , Drosophila melanogaster/efectos de los fármacos , Antagonistas de Receptores de Mineralocorticoides/farmacología , Animales , Animales Modificados Genéticamente/genética , Animales Modificados Genéticamente/metabolismo , Colorantes/metabolismo , Relación Dosis-Respuesta a Droga , Proteínas de Drosophila/genética , Proteínas de Drosophila/metabolismo , Drosophila melanogaster/genética , Drosophila melanogaster/crecimiento & desarrollo , Regulación de la Expresión Génica/efectos de los fármacos , Proteínas HSP70 de Choque Térmico/genética , Proteínas HSP70 de Choque Térmico/metabolismo , Larva/efectos de los fármacos , Larva/genética , Larva/crecimiento & desarrollo , Espectrofotometría Atómica , Estrés Fisiológico , Factores de Tiempo , Distribución Tisular , Azul de Tripano/metabolismo , beta-Galactosidasa/metabolismo
18.
Front Nutr ; 9: 959890, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35938103

RESUMEN

Objectives: Moringa oleifera has been used for centuries due to its medicinal properties and health benefits. The plant has antifungal, anti-viral, and anti-inflammatory properties. We aimed to evaluate the effect of consumption of Moringa leaves, along with a regular diet on serum hemoglobin and retinol and underweight status among rural Bangladeshi adolescent girls. Methods: This school-based quasi-experimental study involved 226 adolescent girls (12-14 years-old). Intervention group (n = 113) received a meal comprising rice, concentrated dal, and fried potato with Moringa pakora (oil-fried snack); the control group (at a different school in an adjacent area with similar population demographics) received calorie-matched meal without Moringa pakora for 6 months. We used generalized liner regression (GLM) analysis, to explore the effect of the intervention among the groups between baseline and endline. Results: Mean age of the intervention and control groups were 12.7 ± 0.7 and 13.3 ± 0.8 years, respectively. After adjusting for maternal education, absenteeism, asset index, BMI-for-age Z-score, GLM regression showed significant positive changes in hemoglobin (intervention vs. control: coef = 0.41, P = 0.010) and serum retinol (coef = 0.27, P = 0.00). No significant changes in weight was observed between groups. Conclusion: Consumption of Moringa leaves has the potential to improving hemoglobin and serum retinol level and should be encouraged as regular diet.

19.
Chem Biol Interact ; 366: 110120, 2022 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-36027948

RESUMEN

Alzheimer's disease (AD) is a progressive neurodegenerative disorder. The available drugs improve the symptoms but do not play role in modifying disease effects. Currently, the treatment strategies focus on inhibiting the production of Aß-42 aggregates and tau filaments. In this context the natural plant products could act as a potent candidate. Therefore, we decided to study the effect of apigenin on the transgenic Drosophila model of AD i.e., expressing Aß-42 in the neurons. The AD flies were allowed to feed on the diet having 25, 50, 75 and 100 µM of apigenin for 30 days. The exposure of AD flies to apigenin showed a dose dependent significant decrease in the oxidative stress and delay in the loss of climbing ability. Apigenin also inhibits the activity of acetylcholinesterase. The immunostaining and molecular docking studies suggest that apigenin inhibits the formation of Aß-42 aggregates. Apigenin is potent in reducing the AD symptoms being mimicked in the transgenic Drosophila model of AD.


Asunto(s)
Enfermedad de Alzheimer , Acetilcolinesterasa/genética , Enfermedad de Alzheimer/tratamiento farmacológico , Péptidos beta-Amiloides , Animales , Apigenina/farmacología , Apigenina/uso terapéutico , Modelos Animales de Enfermedad , Drosophila , Simulación del Acoplamiento Molecular
20.
JMIR Res Protoc ; 11(2): e31475, 2022 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-35129457

RESUMEN

BACKGROUND: The aim of this study is to assess if peer counseling of women improves breastfeeding, complementary feeding practices, and child growth, and thus reduces the prevalence of undernutrition in children up to 4 years of age. OBJECTIVE: Lack of exclusive breastfeeding and inappropriate complementary feeding are critical factors in reducing child undernutrition, morbidity, and mortality. There are reported trials of peer counseling to improve breastfeeding; however, they did not examine the efficacy of peer counseling to improve complementary feeding or the long-term impacts on child growth and development. METHODS: This study has used a community-based, cluster-randomized controlled trial with a superiority design and 2 parallel treatment arms. It is assessing the impact of peer counseling, starting in late pregnancy up to 1 year after delivery, on child feeding practices, growth, and development with follow-up until 48 months of age. The study site was Mirpur, a densely populated area in Dhaka. Using satellite maps and geographic information system mapping, we constructed 36 clusters with an average population of 5000 people. We recruited pregnant women in the third trimester aged 16-40 years, with no more than 3 living children. Trained peer counselors visited women at home twice before delivery, 4 times in the first month, monthly from 2 to 6 months, and again at 9 and 12 months. Trained research assistants collected anthropometric measurements. The primary outcome will be differences in child stunting and mean length for age at 6, 12, 15, and 18 months. Secondary outcomes will be differences in the percentage of women exclusively breastfeeding in the mean duration of any breastfeeding and in the percentage of children at 6 and 9 months of age who receive solid, semisolid, or soft foods; and the percentage of children consuming foods from 4 or more food groups at 9, 12, 15, and 18 months. We will assess the mean cognitive function scores from the Ages and Stages Questionnaire (9 and 18 months) and Bayley tests (24 and 36 months). RESULTS: We identified 65,535 people in mapped residences, from which we defined 36 clusters and randomly allocated them equally to intervention or control groups stratified by cluster socioeconomic status. From July 2011 to May 2013, we identified 1056 pregnant women and 993 births in the intervention group and 994 pregnancies and 890 births in the control group. At 18 months, 692 children remained in the intervention group and 551 in the control group. From January 2015 to February 2017, we conducted the long-term follow-up of the cohort. We have now completed the data collection and processing and have started analyses. CONCLUSIONS: This study will help fill the evidence gap about the short- and long-term impact of peer counseling on improving infant feeding, preventing childhood undernutrition, and enhancing child cognitive development. TRIAL REGISTRATION: ClinicalTrials.gov NCT01333995; https://clinicaltrials.gov/ct2/show/NCT01333995. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/31475.

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