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1.
Cell Rep Med ; 5(1): 101359, 2024 01 16.
Artículo en Inglés | MEDLINE | ID: mdl-38232702

RESUMEN

Acute myeloid leukemia is a poor-prognosis cancer commonly stratified by genetic aberrations, but these mutations are often heterogeneous and fail to consistently predict therapeutic response. Here, we combine transcriptomic, proteomic, and phosphoproteomic datasets with ex vivo drug sensitivity data to help understand the underlying pathophysiology of AML beyond mutations. We measure the proteome and phosphoproteome of 210 patients and combine them with genomic and transcriptomic measurements to identify four proteogenomic subtypes that complement existing genetic subtypes. We build a predictor to classify samples into subtypes and map them to a "landscape" that identifies specific drug response patterns. We then build a drug response prediction model to identify drugs that target distinct subtypes and validate our findings on cell lines representing various stages of quizartinib resistance. Our results show how multiomics data together with drug sensitivity data can inform therapy stratification and drug combinations in AML.


Asunto(s)
Leucemia Mieloide Aguda , Proteogenómica , Humanos , Proteómica/métodos , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/metabolismo , Genómica/métodos , Mutación
2.
Annu Rev Pharmacol Toxicol ; 64: 455-479, 2024 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-37738504

RESUMEN

Proteogenomics refers to the integration of comprehensive genomic, transcriptomic, and proteomic measurements from the same samples with the goal of fully understanding the regulatory processes converting genotypes to phenotypes, often with an emphasis on gaining a deeper understanding of disease processes. Although specific genetic mutations have long been known to drive the development of multiple cancers, gene mutations alone do not always predict prognosis or response to targeted therapy. The benefit of proteogenomics research is that information obtained from proteins and their corresponding pathways provides insight into therapeutic targets that can complement genomic information by providing an additional dimension regarding the underlying mechanisms and pathophysiology of tumors. This review describes the novel insights into tumor biology and drug resistance derived from proteogenomic analysis while highlighting the clinical potential of proteogenomic observations and advances in technique and analysis tools.


Asunto(s)
Medicina de Precisión , Proteogenómica , Humanos , Proteómica , Genómica , Espectrometría de Masas
3.
J Dairy Res ; 90(4): 413-417, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38073537

RESUMEN

This Research Communication aims to compare the effect of A1A2 and A2A2 cow milk diets on the biochemical and histological parameters of rats. The rats were divided into four groups and fed with a normal diet, A2 milk powder, A1A2 or A2A2 cow milk diets for 90 d. Blood glucose, kidney function, liver function and lipid profile were examined during the experimental period. The study showed an increase in the body weight of the A1A2 group whereas a slight decrease in the A2A2 group, and blood glucose levels increased from d 0 to day 90 in all experimental groups. However, none of these changes were found to be statistically insignificant (P > 0.05). Moreover, no significant changes were recorded in other parameters (serum glutamic pyruvic transferase and serum glutamic-oxaloacetic transaminase for liver function, bilirubin direct, cholesterol, triglycerides, creatinine and uric acid). The histology of the liver, kidney and pancreas also showed no changes in all groups. Overall, this study revealed no significant difference in the nutritional values of A1A2 and A2A2 milk types and hence equally beneficial for health. Although the present study showed no significant difference in the effect of both milk types in 90 d, further studies might be conducted to evaluate their longer term effects.


Asunto(s)
Glucemia , Leche , Bovinos , Femenino , Ratas , Animales , Ratas Wistar , Dieta/veterinaria , Hígado
5.
PLoS One ; 18(10): e0287487, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37847700

RESUMEN

Unintentional injuries are one of the leading causes of ill health, disability & death among the children and young adults worldwide. As these injuries are strongly related to social determinants, the burden falls mainly upon the Low- and Middle-Income Countries (LMICs) like Nepal. Thus, the main objective was to explore the epidemiology of unintentional childhood injuries in urban and rural areas of Kavrepalanchok district. A cross sectional analytical study was done in Bethanchok rural municipality and Dhulikhel municipality of Kavrepalanchok district. The respondents were interviewed using a pretested semi-structured questionnaire. The details of injuries sustained within the past 12 months were included. A total of 667 children aged 1-16 years were surveyed, among which 26% from rural and 17.2% from urban areas had unintentional injuries in the past 12 months. Falls were the most common mode of injury in both the areas. Similarly, the proportion of burn was more in rural area (16.1%) whereas, Road Traffic Injuries were more in urban area (12.5%). Majority of the injuries occurred at home (54.5%) while the child was playing (64.1%). Factors like child's gender and place of residence affected the occurrence of unintentional injuries (p<0.05). Out of total injured children, 18 of them had not recovered and 11 were left with some form of permanent disability. As the rate and pattern of unintentional childhood injuries in the rural and urban area differ, the prevention strategies should focus on risk factors that apply to both the areas and awareness should be created among the parents and primary caregivers about the fact that childhood injuries are predictable and preventable.


Asunto(s)
Lesiones Accidentales , Quemaduras , Heridas y Lesiones , Humanos , Niño , Nepal/epidemiología , Estudios Transversales , Lesiones Accidentales/epidemiología , Padres , Población Rural , Heridas y Lesiones/epidemiología
6.
Blood Cancer Discov ; 4(6): 452-467, 2023 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-37698624

RESUMEN

The BCL2 inhibitor venetoclax combined with the hypomethylating agent azacytidine shows significant clinical benefit in a subset of patients with acute myeloid leukemia (AML); however, resistance limits response and durability. We prospectively profiled the ex vivo activity of 25 venetoclax-inclusive combinations on primary AML patient samples to identify those with improved potency and synergy compared with venetoclax + azacytidine (Ven + azacytidine). Combination sensitivities correlated with tumor cell state to discern three patterns: primitive selectivity resembling Ven + azacytidine, monocytic selectivity, and broad efficacy independent of cell state. Incorporation of immunophenotype, mutation, and cytogenetic features further stratified combination sensitivity for distinct patient subtypes. We dissect the biology underlying the broad, cell state-independent efficacy for the combination of venetoclax plus the JAK1/2 inhibitor ruxolitinib. Together, these findings support opportunities for expanding the impact of venetoclax-based drug combinations in AML by leveraging clinical and molecular biomarkers associated with ex vivo responses. SIGNIFICANCE: By mapping drug sensitivity data to clinical features and tumor cell state, we identify novel venetoclax combinations targeting patient subtypes who lack sensitivity to Ven + azacytidine. This provides a framework for a taxonomy of AML informed by readily available sets of clinical and genetic features obtained as part of standard care. See related commentary by Becker, p. 437 . This article is featured in Selected Articles from This Issue, p. 419.


Asunto(s)
Antineoplásicos , Leucemia Mieloide Aguda , Humanos , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/genética , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Azacitidina/farmacología , Azacitidina/uso terapéutico
7.
Cereal Res Commun ; : 1-11, 2023 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-37361482

RESUMEN

Wheat (Triticum aestivum L.) is the major global staple food crop that meets the food security demands of various nations across the continents. The recent reduction in wheat production is attributed to several biotic and abiotic factors especially, temperature and rainfall patterns, and pest occurrence. Among insect pests, aphid species are emerging as new pests of economic importance in India and elsewhere. The present investigation identified a new association of Macrosiphum euphorbiae Thomas with the wheat crop. Life table parameters were studied for M. euphorbiae and Rhopalosiphum padi fed on wheat foliage. The total nymphal duration and life cycle duration, respectively, of R. padi (4.76 ± 0.54 and 9.71 ± 1.38 days) and M. euphorbiae (5.84 ± 0.69 and 9.96 ± 1.31 days) were significantly different for these species. The fecundity of the two aphid species was 23.95 ± 8.67 and 11.6 ± 4.10 progeny/female, respectively. Age-specific survival rate (lx), age-specific fecundity (fx), and population age-specific fecundity (mx) were higher in R. Padi compared to M. euphorbiae. Reproductive value (Vxj) was high in R. padi and the duration of reproduction was less, while these parameters showed an opposite trend in M. euphorbiae. The gross reproduction rate (GRR) was found higher in R. Padi (29.17 offspring/adult lifetime) compared to M. euphorbiae (19.58 offspring/adult lifetime). The M. euphorbiae being a pest of solanaceous crops seems to have shifted to a new host, i.e., wheat. This new adaptation strategy to survive for long periods on a wheat crop might pose a serious threat to wheat crop cultivation in near future.

8.
Curr Drug Deliv ; 20(3): 250-260, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-35570558

RESUMEN

BACKGROUND: The development of drug delivery carriers is the key area of research in the field of novel drug delivery systems. To date, a long list of carriers has been identified for this purpose but the deliveries of poorly water-soluble active substances are still facing challenges and hence, such substances are pharmacologically unsafe and economically incompetent. OBJECTIVE: This article aims to review the applications of casein as a drug carrier and its potential for clinical use. METHODS: The relevant literature on the casein protein was collected from authentic online scientific databases like PubMed, Scopus and Google Scholar using different keywords including "casein", "drug delivery system", "drug carrier" and "bioavailability". The articles and books accessed online have been thoroughly reviewed and the most relevant reports on casein as a drug carrier have only been included in the present study. RESULTS: Casein is a milk protein that has many structural and physicochemical properties which facilitate its functionality in delivery systems. Moreover, its amphiphilic nature makes it the most suitable carrier for both hydrophobic and hydrophilic drugs without showing any toxic effects. The carriers obtained from natural sources are trustworthy over synthetic carriers and in the demand of the market due to their easy availability, low-cost factor, bio-friendly and nontoxic nature. CONCLUSION: Casein was found to be an effective natural drug carrier in various delivery systems due to its unique applications in improving the bioavailability and efficacy of a drug.


Asunto(s)
Caseínas , Portadores de Fármacos , Portadores de Fármacos/química , Caseínas/química , Caseínas/metabolismo , Sistemas de Liberación de Medicamentos , Micelas , Disponibilidad Biológica
9.
Zootaxa ; 5325(2): 239-250, 2023 Aug 08.
Artículo en Inglés | MEDLINE | ID: mdl-38220913

RESUMEN

A new species of scale insect in the genus Aulacaspis (Hemiptera: Coccomorpha: Diaspididae) is described and illustrated from Kerala, India. Aulacaspis elettaria Joshi & Nafeesa sp. n. was collected from the host plant Elettaria cardamomum (L.) Maton (Zingiberaceae). Biological notes on the species are provided, including information on the occurrence, spread and pest status of this species in Kerala. An identification key based on adult females is given to separate Indian species of Aulacaspis.


Asunto(s)
Elettaria , Hemípteros , Lepidópteros , Femenino , Animales , India
10.
J Nepal Health Res Counc ; 20(2): 339-346, 2022 Nov 02.
Artículo en Inglés | MEDLINE | ID: mdl-36550710

RESUMEN

BACKGROUND: Routinely collected injury data can help to identify populations at risk of injury, circumstances surrounding those injuries, and can be used to develop targeted interventions. However, routinely collected injury data in Nepal are at risk of being incomplete or poorly coded and are underutilised. Therefore, this study aimed to explore the strengths, and opportunities for improvement, of systems that routinely measure injury incidence in Nepal. METHODS: This study employed a qualitative design where data were collected through interviews with personnel working in four routine data systems; the Health Management Information System, the Road Accident Reporting System, the Daily Incident Reporting System, and the Civil Registration System. Interviews were conducted with front-line data collectors as well as strategic decision makers working in these data systems. Interviews were audio-recorded, transcribed, translated into English and analysed using framework analysis. RESULTS: A total of 32 interviews were completed, 19 interviews with front-line data collectors and 13 interviews with strategic decision makers. The data recording and reporting process of the four systems were identified and described. The analysis of data yielded 11 themes that described the strengths and limitations of the data collected through the four systems, challenges for effective data systems, and user recommendations for system improvement. CONCLUSIONS: This study identified the strengths, limitations, system challenges, and opportunities to improve data quality of each of the four routine data collection systems. These findings may be useful in engaging stakeholders in strengthening existing routine injury data collection systems or implementing alternative systems.


Asunto(s)
Sistemas de Información en Salud , Humanos , Nepal/epidemiología , Investigación Cualitativa
11.
BMC Public Health ; 22(1): 2005, 2022 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-36320057

RESUMEN

BACKGROUND: Gender inequality and violence are not mutually exclusive phenomena but complex loops affecting each other. Women in Nepal face several inequalities and violence. The causes are diverse, but most of these results are due to socially assigned lower positioning of women. The hierarchies based on power make women face subordination and violence in Nepal. The study aims to explore participants' understanding and experience to identify the status of inequality for women and how violence emerges as one of its consequences. Furthermore, it explores the causes of sex trafficking as an example of an outcome of inequality and violence. METHOD: The study formulated separate male and female groups using a purposive sampling method. The study used a multistage focus group discussion, where the same groups met at different intervals. Six focus group discussions, three times each with male and female groups, were conducted in a year. Thirty-six individuals, including sixteen males and twenty females, were involved in the discussions. The study used constructivist grounded theory for the data analysis. RESULTS: The study participants identify that a power play between men and women reinforce inequality and increases the likelihood of violence for women. The findings suggest that the subjugation of women occurs due to practices based on gender differences, constricted life opportunities, and internalization of constructed differences among women. The study identifies that interpersonal and socio-cultural violence can result due to established differences between men and women. Sex trafficking, as an example of the outcome of inequality and violence, occurs due to the disadvantageous position of women compounded by poverty and illiteracy. The study has developed a concept of power-play which is identified as a cause and consequence of women's subordination and violence. This power play is found operative at various levels with social approval for men to use violence and maintain/produce inequality. CONCLUSION: The theoretical concept of power play shows that there are inequitable power relations between men and women. The male-centric socio-cultural norms and practices have endowed men with privilege, power, and an opportunity to exploit women. This lowers the status of women and the power-play help to produce and sustain inequality. The power-play exposes women to violence and manifests itself as one of the worst expressions used by men.


Asunto(s)
Violencia de Género , Femenino , Masculino , Humanos , Nepal , Investigación Cualitativa , Grupos Focales , Violencia , Identidad de Género
12.
Zootaxa ; 5159(4): 593-600, 2022 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-36095529

RESUMEN

The male of Anagyrus almoriensis Shafee, Alam Agarwal (Hymenoptera: Encyrtidae) is described and illustrated from India along with notes on its associated hosts and types.


Asunto(s)
Hemípteros , Himenópteros , Rubus , Animales , Masculino
13.
J Tradit Complement Med ; 12(5): 477-487, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36081821

RESUMEN

Background and aim: The ingredients viz., Artemisia roxburghiana, Cissampelos pareira, Stephania glabra, Drimia indica, Roylea cinerea, Tinospora sinensis and Curcuma longa of the present formulation are used to treat diabetes in the Indian traditional medical system. Adopting the concept of multiple herbal mixtures for better therapeutic effects from the ancient Ayurvedic text Sarangdhar Samhita, the present study aimed to develop a polyherbal formulation (PHF) of seven herbs and to evaluate its sodium-glucose cotransporter protein-2 (SGLT2) inhibitory effect on type 2 diabetic rats. Experimental procedure: Streptozotocin (STZ) (60 mg/kg) and nicotinamide (NAM) (120 mg/kg) were intraperitoneally administered to induce type 2 diabetes in Wistar rats. The animals were divided into 5 groups viz. normal control, diabetic control, positive control (dapagliflozin at 0.1 mg/kg) and two test groups (PHF at 250 and 500 mg/kg). Various parameters including blood glucose, serum glutamic pyruvic transaminase (SGPT), serum glutamic-oxaloacetic transaminase (SGOT), bilirubin, triglycerides and creatinine were measured. Results and conclusion: The treatment with PHF (250 and 500 mg/kg) showed a significant (p < 0.05) decrease in blood glucose levels by 56.37% and 58.17%, respectively. The levels of SGOT, SGPT and bilirubin were significantly reduced in PHF-fed diabetic rats. Histopathological examination revealed no major changes in the treated groups as compared to the normal control. The molecular docking study showed strong binding of ß-sitosterol, insulanoline, warifteine, dehydrocorydalmine, taraxerol acetate, lupeol, corydalmine and luteolin to SGLT2 protein. The present study concludes that PHF has promising antidiabetic activity via inhibiting SGLT2 protein without showing any adverse effects.

14.
Artículo en Inglés | MEDLINE | ID: mdl-35886332

RESUMEN

BACKGROUND: Road traffic injuries are a significant and increasing public health burden in Nepal, but there is no national coverage of regulated and standardized emergency medical service systems. Therefore, this study was designed to develop a first responder trauma training program for the Nepal traffic police and to evaluate the feasibility of its delivery and follow up. METHODS: A training needs assessment with traffic-police officers in a single district of Nepal informed the development of a 3-day first-response course which was provided to officers in May 2019. Participants were supplied with a trauma-pack and asked to complete a report form when first-responder skills were used. Knowledge and confidence face-to-face surveys were used before and after training to assess learning, and were repeated at 6 months to assess retention of knowledge. The surveys at 6 months assessed the factors affecting application of first response skills. RESULTS: Most (97%) participants believed giving first-aid was part of their responsibilities and 95% had experience of transporting road crash victims to hospital with a range of injuries. Low levels of first-aid training and variable course content were reported. Knowledge and confidence scores improved post-intervention but were reduced at 6-months. During attendance at 303 road crashes in the 6-months follow-up period, 44% of the participants self-reported using at least one skill from the course; applying them on 92 occasions. Incident report-forms were frequently not completed. Barriers to providing treatment included: the patient already en-route to hospital when police arrived at scene; resistance to providing care from relatives or bystanders; and competing police duties (e.g., traffic management). CONCLUSIONS: Delivering a first-response training program for traffic-police in Nepal is feasible. Knowledge was retained and used, and skills were in frequent demand. A study of effectiveness and cost-effectiveness appears warranted to determine if extending the training to other districts can improve outcomes in road traffic injury patients in the absence of formal emergency medical services.


Asunto(s)
Policia , Heridas y Lesiones , Accidentes de Tránsito , Estudios de Factibilidad , Primeros Auxilios , Humanos , Nepal/epidemiología
15.
Cancer Cell ; 40(8): 850-864.e9, 2022 08 08.
Artículo en Inglés | MEDLINE | ID: mdl-35868306

RESUMEN

Acute myeloid leukemia (AML) is a cancer of myeloid-lineage cells with limited therapeutic options. We previously combined ex vivo drug sensitivity with genomic, transcriptomic, and clinical annotations for a large cohort of AML patients, which facilitated discovery of functional genomic correlates. Here, we present a dataset that has been harmonized with our initial report to yield a cumulative cohort of 805 patients (942 specimens). We show strong cross-cohort concordance and identify features of drug response. Further, deconvoluting transcriptomic data shows that drug sensitivity is governed broadly by AML cell differentiation state, sometimes conditionally affecting other correlates of response. Finally, modeling of clinical outcome reveals a single gene, PEAR1, to be among the strongest predictors of patient survival, especially for young patients. Collectively, this report expands a large functional genomic resource, offers avenues for mechanistic exploration and drug development, and reveals tools for predicting outcome in AML.


Asunto(s)
Leucemia Mieloide Aguda , Diferenciación Celular , Estudios de Cohortes , Humanos , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/genética , Receptores de Superficie Celular/genética , Transcriptoma
16.
Clin Proteomics ; 19(1): 30, 2022 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-35896960

RESUMEN

Acute Myeloid Leukemia (AML) affects 20,000 patients in the US annually with a five-year survival rate of approximately 25%. One reason for the low survival rate is the high prevalence of clonal evolution that gives rise to heterogeneous sub-populations of leukemic cells with diverse mutation spectra, which eventually leads to disease relapse. This genetic heterogeneity drives the activation of complex signaling pathways that is reflected at the protein level. This diversity makes it difficult to treat AML with targeted therapy, requiring custom patient treatment protocols tailored to each individual's leukemia. Toward this end, the Beat AML research program prospectively collected genomic and transcriptomic data from over 1000 AML patients and carried out ex vivo drug sensitivity assays to identify genomic signatures that could predict patient-specific drug responses. However, there are inherent weaknesses in using only genetic and transcriptomic measurements as surrogates of drug response, particularly the absence of direct information about phosphorylation-mediated signal transduction. As a member of the Clinical Proteomic Tumor Analysis Consortium, we have extended the molecular characterization of this cohort by collecting proteomic and phosphoproteomic measurements from a subset of these patient samples (38 in total) to evaluate the hypothesis that proteomic signatures can improve the ability to predict response to 26 drugs in AML ex vivo samples. In this work we describe our systematic, multi-omic approach to evaluate proteomic signatures of drug response and compare protein levels to other markers of drug response such as mutational patterns. We explore the nuances of this approach using two drugs that target key pathways activated in AML: quizartinib (FLT3) and trametinib (Ras/MEK), and show how patient-derived signatures can be interpreted biologically and validated in cell lines. In conclusion, this pilot study demonstrates strong promise for proteomics-based patient stratification to assess drug sensitivity in AML.

17.
BMC Psychiatry ; 22(1): 429, 2022 06 25.
Artículo en Inglés | MEDLINE | ID: mdl-35752774

RESUMEN

BACKGROUND: Suicide is a significant public health concern in Nepal and there is a need for an evidence-based suicide prevention programme to facilitate stakeholders working towards suicide prevention in Nepal. Collaborative research between stakeholders focussing on shared priorities can help to prevent and control suicide. Hence, we aimed to develop a consensus list of research priorities for suicide prevention in Nepal. METHODS: The Delphi expert consensus method was used to elicit the prioritized research questions for suicide prevention in Nepal. Participants comprised suicide prevention experts (psychologists, psychiatrists, psychiatric nurses, researchers and advocates) and people with lived experience. Three rounds of Delphi were conducted; round 1: one to one interviews involving open ended questions used to generate research questions; round 2: ranking of the research questions using a 5-point Likert scale, and round 3: re-ranking of research questions in light of individual and group responses. RESULTS: Forty-two participants participated in round 1 followed by 38 in round 2 and 39 in round 3 . 522 research questions were generated through round 1 which were grouped together and reduced to 33 research questions sent for ranking in round 2. Using a cut off of at least 70% of the panel ranking questions as 'very important' or 'important', 22 questions were retained. These research questions were sent for re-rating in round 3 resulting in a final list of prioritized questions. CONCLUSIONS: This is the first expert consensus study to identify the top research priorities for suicide prevention in Nepal, and used experts in suicide prevention and those with lived experience. A consensus was reached regarding the studies needed to improve suicide data quality, assess the burden and identify factors associated with suicide. A priority driven approach to suicide prevention research may ensure that the research endeavour provides the most useful information for those whose day-to-day work involves trying to prevent suicide.


Asunto(s)
Investigación sobre Servicios de Salud , Prevención del Suicidio , Consenso , Técnica Delphi , Humanos , Nepal
18.
J Nepal Health Res Counc ; 19(4): 814-819, 2022 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-35615843

RESUMEN

BACKGROUND: Healthy lifestyle behaviours have been consistently associated with reduced non-communicable disease related morbidity, mortality and wellbeing. Unhealthy behaviours are major contributors to the global burden of disease. The main aim of this study is to access lifestyle behaviours in adults during the corona virus disease-19 pandemic. METHODS: Cross sectional study was conducted among general population residing in Nepal. Online questionnaire was developed using Google Forms. Questionnaire comprised of three validated tools regarding the following lifestyle behaviours: Physical activity, Nutrition, Sleep. The collected data was analysed using SPSS version 20. To test the differences between changes in dietary and physical activity behaviours in relation to changes in body weight a Chi-square test was used. RESULTS: During Covid -19 lockdown, 124(42%) participants performed moderate level of physical activity. Of those participated, 127(43.1%) and 44(14.9%) reported an increase and decrease of weight, respectively. Among 110(37.3%) who reported snacking in lockdown led to weight gain in 68(61.8%). Availability of more time for meal preparation (24.1%) and feelings of boredom (17.4%) were the main reasons for changing dietary habits. The subjective sleep quality of participants was as follows: very good-40.3%; fairly good-45.4 %; fairly bad-11.2%; very bad 3.1%. There was significant positive correlation between sleep quality and sleep duration (R=0.261; P<0.001), sleep latency (R=0.362; P<0.001), sleeping medications (R=0.174; P<0.003) and daytime dysfunction (R=0.308; P<0.001). CONCLUSIONS: Life style behaviours were affected during lockdown period. Higher amounts of food intake and snaking were increased. Physical activity was at a moderate level, increased sedentary behaviour was reported by most participants during lockdown. However, sleep quality was not negatively affected.


Asunto(s)
COVID-19 , Adulto , COVID-19/epidemiología , Control de Enfermedades Transmisibles , Estudios Transversales , Humanos , Estilo de Vida , Nepal/epidemiología , Pandemias , SARS-CoV-2
19.
Carbohydr Res ; 516: 108560, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35483153

RESUMEN

In this study, the subcritical water hydrolysis of N-acetyl-d-glucosamine (NAG), a monomer of abundant renewable marine biopolymer chitin, for production of value-added chemicals is investigated. The enhanced ionization of water at subcritical conditions (200 °C; 50-100 bar), provides enough acidity for deacetylation of NAG resulting in 80% yield of acetic acid along with traces of formic acid, lactic acid, glucose, fructose, 5-hydroxymethylfurfural (5-HMF),etc. The significant humin formation indicates that the self-condensation and polymerisation of 5-HMF is favored in water at subcritical conditions. A catalyst p-toluenesulfonic acid (p-TsOH) was employed to selectively convert NAG to levulinic acid (LA) via ring opening of 5-HMF previously formed during hydrolysis. The maximum yield of 27.13 ± 1% and 53.46 ± 1% of 5-HMF and LA, respectively, was obtained at process conditions optimized using Box-Behnken design coupled with response surface methodology. Subcritical water enables greener conversion of NAG to platform chemicals wherein the selective production can be achieved by tuning the process conditions.


Asunto(s)
Acetilglucosamina , Agua , Furaldehído , Glucosamina , Hidrólisis , Ácidos Levulínicos
20.
BMJ Open ; 12(4): e059312, 2022 04 13.
Artículo en Inglés | MEDLINE | ID: mdl-35418439

RESUMEN

OBJECTIVE: To identify and prioritise the research needed to help Nepali agencies develop an improved road safety system. DESIGN: Delphi study. SETTING: Nepal. PARTICIPANTS: Stakeholders from government institutions, academia, engineering, healthcare and civil society were interviewed to identify knowledge gaps and research questions. Participants then completed two rounds of ranking and a workshop. RESULTS: A total of 93 participants took part in interviews and two rounds of ranking. Participants were grouped with others sharing expertise relating to each of the five WHO 'pillars' of road safety: (1) road safety management; (2) safer roads; (3) safer vehicles; (4) safer road users and (5) effective postcrash response. Interviews yielded 1019 research suggestions across the five pillars. Two rounds of ranking within expert groups yielded consensus on the important questions for each pillar. A workshop involving all participants then led to the selection of 6 questions considered the most urgent: (1) How can implementing agencies be made more accountable? (2) How should different types of roads, and roads in different geographical locations, be designed to make them safer for all road users? (3) What vehicle fitness factors lead to road traffic crashes? (4) How can the driver licensing system be improved to ensure safer drivers? (5) What factors lead to public vehicle crashes and how can they be addressed? and (6) What factors affect emergency response services getting to the patient and then getting them to the right hospital in the best possible time? CONCLUSIONS: The application of the Delphi approach is useful to enable participants representing a range of institutions and expertise to contribute to the identification of road safety research priorities. Outcomes from this study provide Nepali researchers with a greater understanding of the necessary focus for future road safety research.


Asunto(s)
Conducción de Automóvil , Accidentes de Tránsito/prevención & control , Técnica Delphi , Humanos , Concesión de Licencias , Nepal , Investigación , Seguridad
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