Evolution insolite d’une plaie complexe de la voie biliaire principale postcholécystectomie coelioscopique

Depuis l’avènement de la chirurgie coelioscopique de la lithiase biliaire le nombre  e plaies des voies biliaires a sensiblement augmenté dans la littérature en rapport avec la courbe d’apprentissage des opérateurs. Les plaies méconnues peuvent avoir des conséquences immédiates dramatiques et évoluer vers la péritonite  biliaire. Ailleurs la réparation des fistules biliaires externes au stade de dilatation des voies biliaires nécessite une anastomose bilio-digestive ou des résections  hépatiques réglées.Mots Clés : Plaies - voies biliaire.Since the advent of laparoscopic surgery of biliary stone, the number of wounds of the biliar tracthas increased significantly in the literature related to surgeons  experience. Unknown wound scan have dramatic immediate consequences and can progress to peritonitis. Moreover, the external biliary fistula repair at the stage of bile duct dilatation requires biliary digestive anastomosis or liver resections.Keys words : Wound - biliar tract

Antibacterial, Antioxidant and Physicochemical Properties of <i>Pipper nigram</i> Aided Copper Oxide Nanoparticles

The Pipper nigram (P. nigram) leaf extract was used for the biosynthesis of copper oxide nanoparticles (CuO NPs) and the successful formation of the resultant product was confirmed through several physicochemical techniques. The chemical structure and the elemental composition were analysed through Fourier transform infrared (FTIR) and energy dispersive X-ray (EDX) spectroscopies, respectively. The crystalline structure and crystallite size were investigated through an X-ray diffractometer (XRD) and a monoclinic crystallite with a size of 40.68 nm was reported. Even-distributed particles with an average particle size of 49.75 nm were seen in the scanning electron micrograph (SEM), whereas the thermal stability was checked during the thermogravimetric analysis (TGA). The ultra-violet and visible (UV-Visible) spectroscopy was operated to study the light absorbance phenomena and to determine the band gap energy from the absorption edge, which was found to be 1.47 eV. The CuO NPs were used as antibacterial agents against gram-negative bacteria (GNB) and gram-positive bacteria (GPB), and greater inhibition zones were seen against the former one. The antioxidant test was also carried out against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radicals and the antioxidant potential of CuO NPs was found to be higher than ascorbic acid