Étude des facteurs associés à la supplémentation en vitamine A en routine à l'âge de six mois au centre de santé de Thiès en 2019-2020 (Sénégal) / NA

Introduction :La supplémentation en vitamine A (SVA) est une intervention à haut impact en matière de survie de l'enfant. Le Sénégal, conformément aux recommandations de l'Organisation mondiale de la santé, préconise la SVA dès six mois et tous les six mois jusqu'à cinq ans. Cependant, les données sur le délai de la SVA sont limitées. L'objectif était d'identifier les facteurs associés à la SVA en temps voulu, c'est-à- dire juste à l'âge de six mois. Méthodes : Cette étude transversale a eu lieu à Thiès, une ville située à 70 km de Dakar, capitale sénégalaise. La population d'étude était constituée de 400 enfants âgés de 06 à 11 mois et vus lors des séances de vaccination de routine au centre de santé de référence du district sanitaire de Thiès. La collecte des données a eu lieu du 02 décembre 2019 au 21 janvier 2020 à l'aide d'un entretien individuel avec les mères et du carnet de santé mère-enfant. Le délai de SVA est déterminé en faisant la différence entre la date de naissance et la date où l'enfant a reçu la capsule de vitamine A. Une régression logistique a été réalisée de sorte à identifier les facteurs qui influent sur ce délai ; estimant l'odds ratio ajusté et son intervalle de confiance à 95% (IC95%). Résultats : Les enfants sont nés de mères âgées en moyenne de 27,08±6,34 ans. La proportion de ceux ayant reçu les capsules de vitamine A était de 97,24%. En revanche, seuls 59,28% avaient bénéficié de cette supplémentation en temps voulu, c'est-à-dire juste à l'âge de six mois. Les facteurs positivement associés à la SVA en temps voulu étaient la résidence en zone périurbaine (ORa= 3,81 ; IC95%=1,63 ­ 10,1 ; p-value=0,004), le statut maternel sans emploi (ORa=1,75 ; IC95% =11,12 ­ 2,75 ; p-value=0,015), l'âge maternel supérieur ou égal à 35 ans (ORa=2,94 ; IC95%=1,41 ­ 6,48 ; p-value=0,005), le sexe féminin (ORa=1,77 ; IC95%=1,15 ­ 2,74, p-value=0,009), la vaccination par le PENTA 3 juste à l'âge de 14 semaines (ORa=13,5 ; IC95%=2,67 ­ 247, p-value=0,012). Conclusion : La couverture en SVA à l'âge approprié est faible. Beaucoup d'enfants ont bénéficié de la SVA avec un retard ; ce qui les expose à la malnutrition. Les interventions de promotion de la SVA devraient inclure la distribution des suppléments de vitamine A à l'aide des visites à domicile dans la zone urbaine de Thiès, l'aménagement du temps de travail des femmes, la sensibilisation des jeunes mères, l'intégration desservices de vaccination et de supplémentation en vitamine A. Ces efforts de promotion devraient prendre en compte la dimension genre

In vitro assessment of potential intestinal absorption of some phenolic families and carboxylic acids from commercial instant coffee samples.

Coffee is one of the most consumed beverages in the world, being a source of bioactive compounds as well as flavors. Hydroxycinnamic acids, flavonols, and carboxylic acids have been studied in the samples of instant coffee commercialized in Spain. The studies about contents of food components should be complemented with either in vitro or in vivo bioaccessibility studies to know the amount of food components effectively available for functions in the human body. In this sense, a widely used in vitro model has been applied to assess the potential intestinal absorption of phenolic compounds and organic acids. The contents of hydroxycinnamic acids and flavonols were higher in instant regular coffee samples than in the decaffeinated ones. Bioaccessible phenolic compounds in most analyzed samples account for 20-25% of hydroxycinnamic acids and 17-26% of flavonols. This could mean that a great part of them can remain in the gut, acting as potential in situ antioxidants. Quinic, acetic, pyroglutamic, citric and fumaric acids were identified in commercial instant coffee samples. Succinic acid was found in the coffee blend containing chicory. All carboxylic acids showed a very high bioaccessibility. Particularly, acetic acid and quinic acid were found in higher contents in the samples treated with the in vitro simulation of gastrointestinal processes, compared to the original ones, which can be explained by their cleavage from chlorogenic acid during digestion. This is considered as a positive effect, since quinic acid is considered as an antioxidant inducer.

Ethnomedical and ethnobotanical investigations on the response capacities of Guinean traditional health practioners in the management of outbreaks of infectious diseases: The case of the Ebola virus epidemic.

ETHNOPHARMACOLOGICAL RELEVANCE: The recent outbreak of Ebola virus infections has mostly remained confined to the West African countries Guinea-Conakry, Sierra-Leone and Liberia. Due to intense national and international mobilizations, a significant reduction in Ebola virus transmission has been recorded. While international efforts focus on new vaccines, medicines and diagnostics, no coherent national or international approach exists to integrate the potential of the traditional health practitioners (THPs) in the management of infectious diseases epidemics. Nevertheless, the first contact of most of the Ebola infected patients is with the THPs since the symptoms are similar to those of common traditionally treated diseases or symptoms such as malaria, hemorrhagic syndrome, typhoid or other gastrointestinal diseases, fever and vomiting. MATERIALS AND METHODS: In an ethnomedical survey conducted in the 4 main Guinean regions contacts were established with a total of 113 THPs. The socio-demographic characteristics, the professional status and the traditional perception of Ebola Virus Disease (EVD) were recorded. RESULTS: The traditional treatment of the main symptoms was based on 47 vegetal recipes which were focused on the treatment of diarrhea (22 recipes), fever (22 recipes), vomiting (2 recipes), external antiseptic (2 recipes), hemorrhagic syndrome (2 recipes), convulsion and dysentery (one recipe each). An ethnobotanical survey led to the collection of 54 plant species from which 44 identified belonging to 26 families. The most represented families were Euphorbiaceae, Caesalpiniaceae and Rubiaceae. Literature data on the twelve most cited plant species tends to corroborate their traditional use and to highlight their pharmacological potential. CONCLUSIONS: It is worth to document all available knowledge on the traditional management of EVD-like symptoms in order to evaluate systematically the anti-Ebola potential of Guinean plant species.

Pseudomonas aeruginosa Bacteremic Patients Exhibit Nonprotective Antibody Titers Against Therapeutic Antibody Targets PcrV and Psl Exopolysaccharide.

BACKGROUND: The type 3 secretion protein PcrV and Psl exopolysaccharide are promising therapeutic antibody targets against Pseudomonas aeruginosa. We examined P. aeruginosa bloodstream infection (BSI) isolates for the ability to express PcrV and Psl and evaluated corresponding patient serum for active titers to these targets. METHODS: We identified 114 patients with acute P. aeruginosa BSI; 56 cases were accompanied by acute sera. Serum was evaluated for PcrV- and Psl-specific immunoglobulin G (IgG) and for cytotoxicity and opsonophagocytosis. Isolates were evaluated for susceptibility to antibiotics, expression of PcrV and Psl, and susceptibility to the anti-PcrV/Psl bispecific antibody and clinical candidate MEDI3902. RESULTS: In-hospital mortality for patients with P. aeruginosa BSI was 39%. A total of 26% of isolates were resistant to ≥3 antibiotic classes. Although PcrV and/or Psl were detected in 99% of isolates, a majority of patients lacked active titers to PcrV (100%) and Psl (98%). In addition, MEDI3902 was active against all tested isolates. CONCLUSIONS: A vast majority of P. aeruginosa BSI isolates express PcrV and Psl; however, patient sera most often lacked IgG and functionally active responses to these targets. These results suggest that therapies directed at PcrV and Psl could be a promising approach for combating P. aeruginosa bloodstream infections.

Chemical characterization of a red raspberry fruit extract and evaluation of its pharmacological effects in experimental models of acute inflammation and collagen-induced arthritis.

Berries are an important dietary source of fibres, vitamins, minerals and some biologically active non-nutrients. A red raspberry fruit extract was characterized in terms of phenolic content and the anti-inflammatory properties and protective effects were evaluated in two experimental models of inflammation. The antioxidant potential of the extract, the cellular antioxidant activity and the effects over neutrophils' oxidative burst were also studied to provide a mechanistic insight for the anti-inflammatory effects observed. The extract was administered in a dose of 15 mg kg(-1), i.p. and significantly inhibited paw oedema formation in the rat. The same dose was administered via i.p. and p.o. routes in the collagen-induced arthritis model in the rat. The extract showed pharmacological activity and was able to significantly reduce the development of clinical signs of arthritis and markedly reduce the degree of bone resorption, soft tissue swelling and osteophyte formation, preventing articular destruction in treated animals.

[Management of pre-term labor: use of nifedipine in Conakry, Guinea]. / Menaces d'accouchement prématuré: utilisation de la nifédipine à Conakry, Guinée.

This purpose of this prospective and descriptive study was to evaluate the utility of a calcium-channel inhibitor, i.e. nifedipine, for management of preterm labor in our work setting in terms of safety and cost-effectiveness in comparison with betamimetics classically used for this indication. Study was carried out over a six-month period in the department of Gynecology-Obstetrics Department of Ignace Deen National Hospital in Conakry, Guinea. Pregnant women meeting the following criteria were included: 28 to 33 weeks of amenorrhea, six days of hospitalization either for preterm labor or for another diagnosis that was associated with the occurrence of preterm labor during hospitalization, and absence of contraindications for tocolysis using nifedipine. A total of 42 women were included. Pregnancy was extended for more than 48 hours after the first dose of nifedipine in 86.8% of cases. Administration of nifedipine failed in 5 cases including one case in which it was necessary to change the tocolytic and 4 cases in which delivery occurred less than 48 hours after the first dose of nifedipine. In 68% of cases, 90 mg of nifedipine were sufficient to stop uterine contractions within 48 hours. In 39.5% of cases, no side effects were observed. Adverse effects in the other cases were dizziness (39.5%) and headache (18.4%). The mean term of delivery was 36 weeks +/- 5 days of amenorrhea with a mean extension of 6.2 weeks. Apgar score was low in 30.5% of the newborns and normal in 69.5%. One newborn (2.8%) died. The results of this study indicate that nifedipine is an effective, economical and safe drug for tocolysis and that it can be used as an alternative to betamimetis in countries with limited resources. An information campaign is needed to promote use of nifedipine as a tocolytic in obstetrical facilities of our country.

Ethnobotanical survey and antibacterial activity of some plants used in Guinean traditional medicine.

A total of 418 healers have been interviewed in Guinea, a coastal country of West Africa, ranging between 7 degrees 30 and 12 degrees 30 of northern latitude and 8 degrees and 15 degrees of western longitude. Plant species used by the local inhabitants to treat infectious diseases were identified using ethnobotanical, ethnographic and taxonomic methods. During these investigations, 218 plants were registered, of which the following were the most frequently used: Erythrina senegalensis, Bridelia ferruginea, Crossopteryx febrifuga, Ximenia americana, Annona senegalensis, Cochlospermum tinctorium, Cochlospermum planchonii, Lantana camara, Costus afer, Psidium guajava, Terminalia glaucescens, Uapaca somon and Swartzia madagascariensis. Most plants, and especially the leaves, were essentially used as a decoction. In order to assess antibacterial activity, 190 recipes were prepared and biologically tested, among which six showed activity (minimal inhibitory concentration<125 microg/ml) against Bacillus cereus, Mycobacterium fortuitum, Staphylococcus aureus, or Candida albicans, i.e., Entada africana, Chlorophora regia, Erythrina senegalensis, Harrisonia abyssinica, Uvaria tomentosa, and a mixture of six plants consisting of Swartzia madagascariensis, Isoberlinia doka, Annona senegalensis, Gardenia ternifolia, Terminalia glaucescens and Erythrina senegalensis.

Soil and surface runoff phosphorus relationships for five typical USA midwest soils.

Excessively high soil P can increase P loss with surface runoff. This study used indoor rainfall simulations to characterize soil and runoff P relationships for five Midwest soils (Argiudoll, Calciaquaoll, Hapludalf, and two Hapludolls). Topsoil (15-cm depth, 241-289 g clay kg(-1) and pH 6.0-8.0) was incubated with five NH4H2PO4 rates (0-600 mg P kg(-1)) for 30 d. Total soil P (TPS) and soil-test P (STP) measured with Bray-P1 (BP), Mehlich-3 (M3P), Olsen (OP), Fe-oxide-impregnated paper (FeP), and water (WP) tests were 370 to 1360, 3 to 530, 10 to 675, 4 to 640, 7 to 507, and 2 to 568 mg P kg(-1), respectively. Degree of soil P saturation (DPS) was estimated by indices based on P sorption index (PSI) and STP (DPSSTP) and P, Fe, and Al extracted by ammonium oxalate (DPSox) or Mehlich-3 (DPSM3). Soil was packed to 1.1 g cm(-3) bulk density in triplicate boxes set at 4% slope. Surface runoff was collected during 75 min of 6.5 cm h(-1) rain. Runoff bioavailable P (BAP) and dissolved reactive P (DRP) increased linearly with increased P rate, STP, DPSox, and DPSM3 but curvilinearly with DPSSTP. Correlations between DRP or BAP and soil tests or saturation indices across soils were greatest (r > or = 0.95) for FeP, OP, and WP and poorest for BP and TPS (r = 0.83-0.88). Excluding the calcareous soil (Calciaquoll) significantly improved correlations only for BP. Differences in relationships between runoff P and the soil tests were small or nonexistent among the noncalcareous soils. Routine soil P tests can estimate relationships between runoff P concentration and P application or soil P, although estimates would be improved by separate calibrations for calcareous and noncalcareous soils.

N-(4-{[4-(1H-Benzoimidazol-2-yl)-arylamino]-methyl}-phenyl)-benzamide derivatives as small molecule heparanase inhibitors.

A novel class of N-(4-{[4-(1H-benzoimidazol-2-yl)-arylamino]-methyl}-phenyl)-benzamides are described as inhibitors of the endo-beta-glucuronidase heparanase. Among them are N-(4-{[4-(1H-benzoimidazol-2-yl)-phenylamino]-methyl}-phenyl)-3-bromo-4-methoxy-benzamide (15h), and N-(4-{[5-(1H-benzoimidazol-2-yl)-pyridin-2-ylamino]-methyl}- phenyl)-3-bromo-4-methoxy-benzamide (23) which displayed good heparanase inhibitory activity (IC(50) 0.23-0.29 microM), with the latter showing oral exposure in mice.

Resolución de un síndrome de Youssef mediante tratamiento con análogos de GnRH. Caso clínico / Resolution of Youssef's syndrome by treatment with GnRH analogues. Case report

El síndrome de Youssef o menuria tras una fístula vesicouterina ha sido raramente publicado. Este caso difiere de los previamente comunicados en que el tratamiento mediante análogos de la GnRH hizo posible el cese de la menuria y, por tanto, un éxito del tratamiento conservador (AU)

Experimental studies on the influence of surfactants on intestinal absorption of drugs. Cefadroxil as model drug and sodium lauryl sulfate as model surfactant: studies in rat duodenum.

The effect of sodium lauryl sulfate (CAS 151-21-3) on the duodenal absorption of cefadroxil (CAS 50370-12-2) has been investigated with the aid of a classical rat gut in situ preparation. Both compounds were entirely compatible in working solutions. Cefadroxil was found to be very stable and only slightly solubilized in the micellar phase. The apparent first-order absorption rate constants for the free antibiotic fraction were determined in free solution, and in the presence of variable surfactant concentration in luminal fluid. A functional interpretation of these data, based both on the law of mass action and the complete noncompetitive transport inhibition equations, showed that the surfactant acts as a nonspecific inhibitor of the carrier-mediated absorption of the antibiotic, but also as an enhancer of its passive absorption component. The net result was an outstanding reduction in the absorption capacity of cefadroxil when it was perfused at 0.1 mg/ml, i.e. far from its carrier saturation (from 3.0 h-1 in free solution to 2.0(-1) at high surfactant concentration, with a minimum of about 1.4 h-1 in the presence of the surfactant at 0.5 mg/mg in duodenal fluid). When cefadroxil was perfused at 10.0 mg/ml, i.e. with its carrier-mediated transport beyond the saturation, the net result was a progressively enhanced absorption (ranging from about 0.9 h-1 in free solution to 2.0 h-1 at high surfactant concentration).(ABSTRACT TRUNCATED AT 250 WORDS)

[Effects of dietary fats of vegetable and animal origin on lipid synthesis in pigs]. / Effets de matièrres grasses d'origines animale et végétale sur la synthèse des lipides chez le porc.

We have compared the effect of dietary fats, unsaturated (rapeseed oil: RO) or saturated (cow milk: CM), on growth performance, lipogenesis and fatty acid composition of backfat. Both group had the same food intake and growth performance. Nevertheless, the percentage of body fat increases with the diet RO (P < 0.05). Lipogenesis enzyme activities of backfat were greater with RO than with MC. Then, it appeared that pigs fed diets containing high level of unsaturated fat with long-chain fatty acids have both greater lipogenesis and carcass fatness as opposed to pigs fed diet containing saturated fat with medium-chain fatty acids. The fatty acids composition of lipids deposited with RO diet may alter the technological qualities of adipose tissues and that of meat.

Ginkgo biloba e radicais livres em camundongos / Ginkgo biloba and free radicals in mices

O extrato de Ginkgo biloba é um poderoso agente na terapia dos distúrbios vasculares (centrais ou apenas periféricos). É também um destruidor de radicais livres, em experiências com isquemia-reperfusäo intestinal, e um potente inibidor do PAF. No presente trabalho em camundongo normal, a sua açäo antilipoperoxidativa pode ser observada, quando ministrado com água

Disappearance of bromopropylate residues in artichokes, strawberries and beans.

Residues of Bromopropylate were determine in artichokes, strawberries and beans after foliar spray of acaricide at two rates. The rates used were 1 g/l formulated product (normal recommended) and 1.5 g/l. The residue levels of bromopropylate in the three crops after 14 days were lower than 0.7 ppm and did not exceed the Maximum Residual Level (MRL) recommended by FAO. In the artichokes and strawberries, the total concentration of residues decreased by 50% of the initial level after 2-3 days. Only trace levels of the bromopropylate residues (less than 0.01 ppm) were detected in the "hearts" of the artichokes. Bromopropylate residues in the green beans were also less than 0.8 ppm after the first day of foliar spraying. The kinetic of degradation occurred in two different steps. In the first step (4-6 days) the dissipation of bromopropylate was faster whereas in the second step (7-14 days) the loss of residues was much slower.

Hypoglycemic action of Salvia lavandulifolia Vahl. spp. oxyodon:a contribution to studies on the mechanism of action.

Having previously demonstrated the hypoglycemic action of Salvia lavandulifolia Vahl, subspecies oxyodon, the mechanism of action was further investigated. The hypoglycemic action may be the result of several synchronous mechanisms: a) potentiation of insulin release induced by glucose, b) increased peripheral uptake of glucose, c) decreased intestinal absorption of glucose and d) hyperplasia of the pancreatic islet beta cells (seen after chronic treatment).