223 research outputs found

    Effet antihypertensif d\'un extrait aqueux d\'écorce de tronc de Parkia biglobosa (mimosaceae) sur la pression artérielle de lapin.

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    Un extrait aqueux des écorces de tronc de Parkia biglobosa (EAPB), à des concentrations comprises entre 1,18 et 18, 93 mg/kg de poids corporel, induit une hypotension dose dépendante sur la pression artérielle de lapin. L'interaction Adrénaline - EAPB a révélé une réduction significative (

    INSECTS IN THE COMMODITIES STORED IN THE ABIDJAN PORT AUTHORITY AND THE RISKS OF ACCIDENTAL INTRODUCTION OF NEW SPECIES IN COTE D’IVOIRE

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    The inventory and the identification of the insects in the commodities stocked at the abidjan port authority (apa), one of the most popular in west africa, have been carried out in order to know the flow of insect fauna in the inbound and outbound farm products. Three (3) kilogramme samples have been selected and kept in polypropylene bags and labelled. In order to identify the insects, the selected sample has been poured into a sieve exposed to a 100 watt lamp to incite the insect to come out of the grains. The insects have been selected and examined by means of a magnifying glass in the insectary of the laboratory of zoology and animal biology of félix houphouët-boigny university. Overall, 924 insects were inventoried. They were of three natures (coleoptera, lepidoptera and heteroptera). The coleoptera were 985 individuals; they are predominant with 11 families encompassing 15 species. The lepidoptera that have been listed represent 18 individuals and grouped into 2 families and consist of 3 species. Then, the heteroptera composed of 33 individuals within the same family and represented by only one species. At the export, a total of 924 have been recorded with a slight predominance of coleoptera (95.1%), followed by the heteroptera (3.1%) then the lepidoptera (1.7%). By the time of export, the proportion of coleoptera recorded was 91.04%. The insects in all the inbound commodities such as s. Ozyzae (linné) curculionidae, s. Zeamais (motchulsky) curculionidae, s. Cerealella (oliver) gelechiidae, p. Flavipes (review) anthocoridae, have been noted, thus confirming the potential risks of introducing new species in the commercial exchanges

    INSECTS IN THE COMMODITIES STORED IN THE ABIDJAN PORT AUTHORITY AND THE RISKS OF ACCIDENTAL INTRODUCTION OF NEW SPECIES IN COTE D’IVOIRE

    Get PDF
    The inventory and the identification of the insects in the commodities stocked at the abidjan port authority (apa), one of the most popular in west africa, have been carried out in order to know the flow of insect fauna in the inbound and outbound farm products. Three (3) kilogramme samples have been selected and kept in polypropylene bags and labelled. In order to identify the insects, the selected sample has been poured into a sieve exposed to a 100 watt lamp to incite the insect to come out of the grains. The insects have been selected and examined by means of a magnifying glass in the insectary of the laboratory of zoology and animal biology of félix houphouët-boigny university. Overall, 924 insects were inventoried. They were of three natures (coleoptera, lepidoptera and heteroptera). The coleoptera were 985 individuals; they are predominant with 11 families encompassing 15 species. The lepidoptera that have been listed represent 18 individuals and grouped into 2 families and consist of 3 species. Then, the heteroptera composed of 33 individuals within the same family and represented by only one species. At the export, a total of 924 have been recorded with a slight predominance of coleoptera (95.1%), followed by the heteroptera (3.1%) then the lepidoptera (1.7%). By the time of export, the proportion of coleoptera recorded was 91.04%. The insects in all the inbound commodities such as s. Ozyzae (linné) curculionidae, s. Zeamais (motchulsky) curculionidae, s. Cerealella (oliver) gelechiidae, p. Flavipes (review) anthocoridae, have been noted, thus confirming the potential risks of introducing new species in the commercial exchanges

    Next-generation mitogenomics: A comparison of approaches applied to caecilian amphibian phylogeny

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    Mitochondrial genome (mitogenome) sequences are being generated with increasing speed due to the advances of next-generation sequencing (NGS) technology and associated analytical tools. However, detailed comparisons to explore the utility of alternative NGS approaches applied to the same taxa have not been undertaken. We compared a 'traditional' Sanger sequencing method with two NGS approaches (shotgun sequencing and non-indexed, multiplex amplicon sequencing) on four different sequencing platforms (Illumina's HiSeq and MiSeq, Roche's 454 GS FLX, and Life Technologies' Ion Torrent) to produce seven (near-) complete mitogenomes from six species that form a small radiation of caecilian amphibians from the Seychelles. The fastest, most accurate method of obtaining mitogenome sequences that we tested was direct sequencing of genomic DNA (shotgun sequencing) using the MiSeq platform. Bayesian inference and maximum likelihood analyses using seven different partitioning strategies were unable to resolve compellingly all phylogenetic relationships among the Seychelles caecilian species, indicating the need for additional data in this case

    Cognitive subtypes of probable Alzheimer's disease robustly identified in four cohorts

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    INTRODUCTION: Patients with Alzheimer's disease (AD) show heterogeneity in profile of cognitive impairment. We aimed to identify cognitive subtypes in four large AD cohorts using a data-driven clustering approach. METHODS: We included probable AD dementia patients from the Amsterdam Dementia Cohort (n = 496), Alzheimer's Disease Neuroimaging Initiative (n = 376), German Dementia Competence Network (n = 521), and University of California, San Francisco (n = 589). Neuropsychological data were clustered using nonnegative matrix factorization. We explored clinical and neurobiological characteristics of identified clusters. RESULTS: In each cohort, a two-clusters solution best fitted the data (cophenetic correlation >0.9): one cluster was memory-impaired and the other relatively memory spared. Pooled analyses showed that the memory-spared clusters (29%-52% of patients) were younger, more often apolipoprotein E (APOE) ɛ4 negative, and had more severe posterior atrophy compared with the memory-impaired clusters (all P < .05). CONCLUSIONS: We could identify two robust cognitive clusters in four independent large cohorts with distinct clinical characteristics

    Height and body-mass index trajectories of school-aged children and adolescents from 1985 to 2019 in 200 countries and territories: a pooled analysis of 2181 population-based studies with 65 million participants

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    Summary Background Comparable global data on health and nutrition of school-aged children and adolescents are scarce. We aimed to estimate age trajectories and time trends in mean height and mean body-mass index (BMI), which measures weight gain beyond what is expected from height gain, for school-aged children and adolescents. Methods For this pooled analysis, we used a database of cardiometabolic risk factors collated by the Non-Communicable Disease Risk Factor Collaboration. We applied a Bayesian hierarchical model to estimate trends from 1985 to 2019 in mean height and mean BMI in 1-year age groups for ages 5–19 years. The model allowed for non-linear changes over time in mean height and mean BMI and for non-linear changes with age of children and adolescents, including periods of rapid growth during adolescence. Findings We pooled data from 2181 population-based studies, with measurements of height and weight in 65 million participants in 200 countries and territories. In 2019, we estimated a difference of 20 cm or higher in mean height of 19-year-old adolescents between countries with the tallest populations (the Netherlands, Montenegro, Estonia, and Bosnia and Herzegovina for boys; and the Netherlands, Montenegro, Denmark, and Iceland for girls) and those with the shortest populations (Timor-Leste, Laos, Solomon Islands, and Papua New Guinea for boys; and Guatemala, Bangladesh, Nepal, and Timor-Leste for girls). In the same year, the difference between the highest mean BMI (in Pacific island countries, Kuwait, Bahrain, The Bahamas, Chile, the USA, and New Zealand for both boys and girls and in South Africa for girls) and lowest mean BMI (in India, Bangladesh, Timor-Leste, Ethiopia, and Chad for boys and girls; and in Japan and Romania for girls) was approximately 9–10 kg/m2. In some countries, children aged 5 years started with healthier height or BMI than the global median and, in some cases, as healthy as the best performing countries, but they became progressively less healthy compared with their comparators as they grew older by not growing as tall (eg, boys in Austria and Barbados, and girls in Belgium and Puerto Rico) or gaining too much weight for their height (eg, girls and boys in Kuwait, Bahrain, Fiji, Jamaica, and Mexico; and girls in South Africa and New Zealand). In other countries, growing children overtook the height of their comparators (eg, Latvia, Czech Republic, Morocco, and Iran) or curbed their weight gain (eg, Italy, France, and Croatia) in late childhood and adolescence. When changes in both height and BMI were considered, girls in South Korea, Vietnam, Saudi Arabia, Turkey, and some central Asian countries (eg, Armenia and Azerbaijan), and boys in central and western Europe (eg, Portugal, Denmark, Poland, and Montenegro) had the healthiest changes in anthropometric status over the past 3·5 decades because, compared with children and adolescents in other countries, they had a much larger gain in height than they did in BMI. The unhealthiest changes—gaining too little height, too much weight for their height compared with children in other countries, or both—occurred in many countries in sub-Saharan Africa, New Zealand, and the USA for boys and girls; in Malaysia and some Pacific island nations for boys; and in Mexico for girls. Interpretation The height and BMI trajectories over age and time of school-aged children and adolescents are highly variable across countries, which indicates heterogeneous nutritional quality and lifelong health advantages and risks

    Rising rural body-mass index is the main driver of the global obesity epidemic in adults

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    Body-mass index (BMI) has increased steadily in most countries in parallel with a rise in the proportion of the population who live in cities(.)(1,2) This has led to a widely reported view that urbanization is one of the most important drivers of the global rise in obesity(3-6). Here we use 2,009 population-based studies, with measurements of height and weight in more than 112 million adults, to report national, regional and global trends in mean BMI segregated by place of residence (a rural or urban area) from 1985 to 2017. We show that, contrary to the dominant paradigm, more than 55% of the global rise in mean BMI from 1985 to 2017-and more than 80% in some low- and middle-income regions-was due to increases in BMI in rural areas. This large contribution stems from the fact that, with the exception of women in sub-Saharan Africa, BMI is increasing at the same rate or faster in rural areas than in cities in low- and middle-income regions. These trends have in turn resulted in a closing-and in some countries reversal-of the gap in BMI between urban and rural areas in low- and middle-income countries, especially for women. In high-income and industrialized countries, we noted a persistently higher rural BMI, especially for women. There is an urgent need for an integrated approach to rural nutrition that enhances financial and physical access to healthy foods, to avoid replacing the rural undernutrition disadvantage in poor countries with a more general malnutrition disadvantage that entails excessive consumption of low-quality calories.Peer reviewe

    Repositioning of the global epicentre of non-optimal cholesterol

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    High blood cholesterol is typically considered a feature of wealthy western countries(1,2). However, dietary and behavioural determinants of blood cholesterol are changing rapidly throughout the world(3) and countries are using lipid-lowering medications at varying rates. These changes can have distinct effects on the levels of high-density lipoprotein (HDL) cholesterol and non-HDL cholesterol, which have different effects on human health(4,5). However, the trends of HDL and non-HDL cholesterol levels over time have not been previously reported in a global analysis. Here we pooled 1,127 population-based studies that measured blood lipids in 102.6 million individuals aged 18 years and older to estimate trends from 1980 to 2018 in mean total, non-HDL and HDL cholesterol levels for 200 countries. Globally, there was little change in total or non-HDL cholesterol from 1980 to 2018. This was a net effect of increases in low- and middle-income countries, especially in east and southeast Asia, and decreases in high-income western countries, especially those in northwestern Europe, and in central and eastern Europe. As a result, countries with the highest level of non-HDL cholesterol-which is a marker of cardiovascular riskchanged from those in western Europe such as Belgium, Finland, Greenland, Iceland, Norway, Sweden, Switzerland and Malta in 1980 to those in Asia and the Pacific, such as Tokelau, Malaysia, The Philippines and Thailand. In 2017, high non-HDL cholesterol was responsible for an estimated 3.9 million (95% credible interval 3.7 million-4.2 million) worldwide deaths, half of which occurred in east, southeast and south Asia. The global repositioning of lipid-related risk, with non-optimal cholesterol shifting from a distinct feature of high-income countries in northwestern Europe, north America and Australasia to one that affects countries in east and southeast Asia and Oceania should motivate the use of population-based policies and personal interventions to improve nutrition and enhance access to treatment throughout the world.Peer reviewe
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