Infection with Helicobacter pylori (H. pylori) is common in developing countries such as Benin. This germ can cause several gastroduodenal diseases such as gastritis, ulcer, adenocarcinoma or gastric MALT lymphoma. This study aimed to determine the prevalence of H. pylori infection and gastric pre-neoplastic histological lesions in patients admitted for upper gastrointestinal endoscopy (UGE) and to identify factors associated with this infection.Methods: This was a cross-sectional descriptive and analytical study, with prospective data collection, conducted from October 2014 to December 2015. We included all patients admitted to Menontin Hospital for UGE in whom a gastric biopsy has been done. H. pylori research was conducted in anatomy-pathology, either in a medical laboratory in Cotonou or at the CERBA laboratory in Paris, France, depending on the patient's choice. The microscopic study was carried out after staining with Haematoxyline-Eosine-Safran (HES) and the search for H. pylori using Giemsa staining.Results: H. pylori was investigated in 137 patients, 67 men (48.9%) and 70 women (51.1%). The mean age was 48.3±14.6years with extremes of 10 and 83years. Some patients had had at least one previous H. pylori eradication treatment (63 cases or 46%). For the general population, the test was positive in 98 cases, i.e. a prevalence of 71.5%. Depending on whether or not patients had been pre-treated for H. pylori, the test was positive in 40 out of 63 (63.5%) pre-treated patients, versus 58 out of 74 (78.4%) patients who were naïve to any eradication treatment (p=0.057). The pre-neoplastic lesions noted were gastric atrophy in 35 patients (including 25 H. pylori positive), intestinal metaplasia in 13 patients (including 10 H. pylori positive) and low grade dysplasia in 14 patients (including 12 H. pylori positive); high grade dysplasia was found in one patient who was H. pylori negative. Only the type of prior eradicant treatment appeared to be associated with H. pylori infection (p=0.182). Conclusion:H. pylori infection is common in our patients admitted for upper gastrointestinal endoscopy. Gastric atrophy was the most common pre-neoplastic lesion.
Introduction l´hépatite C est un problème de santé publique dans le monde, et plus particulièrement en Afrique subsaharienne. L´objectif de ce travail était de déterminer la séroprévalence des anticorps anti-virus de l´hépatite C ainsi que les facteurs associés, à l´occasion d´un dépistage volontaire en population générale au Bénin. Méthodes il s´agissait d´une étude transversale descriptive et analytique qui s´était déroulée en juillet 2016 dans 4 grandes villes de 4 différents départements du Bénin. Etaient inclus tous les volontaires résidents dans ces villes ciblées, de tous âges, ayant donné leur consentement éclairé. Pour cette recherche, le test de diagnostic rapide HCV ImuMed (Healgen Scientific LLC, USA) avait été utilisé. Une analyse par régression logistique avait été utilisée afin d´identifier les facteurs associés à l´infection par le virus de l´hépatite C. Résultats au total, 2809 volontaires étaient inclus avec une moyenne d´âge de 25,9± 16,5 ans (les extrêmes: 0 et 86 ans), constitués de 53,9% (1514/2809) d´hommes et de 46,1% (1295/2809) de femmes. Plus de la moitié de la population d´étude était constituée de célibataires 59,1% (1612/2726). Il s´agissait principalement de 41,3% (1074/2809) d´élèves ou étudiants. La séroprévalence du VHC était de 1,5% (42/2809). En analyse multivariée, les variables significativement associées au portage des anti-VHC étaient: l´âge de 60 ans et plus (aOR: 46,9, IC 95% 10,2-216,0; p < 0,0001) et l´antécédent d´alcoolisme (aOR: 6,3, IC 95% 3,3-12,1; p < 0,0001). Conclusion la séroprévalence des anticorps anti-VHC était de 1,5% dans la population étudiée. L´infection par le VHC touchait volontiers les sujets âgés (de 60 ans et plus) et ceux ayant un antécédent d´alcoolisme.
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