Chemical and biological studies of Ribes nigrum L. buds essential oil.

Ribes nigrum buds are used in medicine for the diuretic and antiseptic properties of their volatile compounds. We present in this paper comparative data concerning the chemical composition of Ribes nigrum buds essential oils obtained from three blackcurrant varieties. Essential oils were isolated by steam distillation and were analyzed by gas chromatography coupled with mass spectrometry.

Comparative study of different methods for detection of toxic and other enzymatic factors in Vibrio cholerae strains.

The purpose of this work was to characterize the toxin profile and the presence of other virulence factors involved in the pathogenesis and biology of 13 V. cholerae O1 (11 clinical cases and 2 waters) and 6 V. cholerae non O1 strains (4 clinical cases and 2 waters) using genetic (PCR), immunological (RPLA), biochemical (NAD degradation, haemolysis, Kanagawa phenomenon, caseinase, lecithinase, mucinase, amylase, esculine hydrolysis) and cell culture (Vero E6, HEp-2) assays.

Aspects of constitutive and acquired antibioresistance in Aeromonas hydrophila strains isolated from water sources.

Over the last three decades, the literature pointed out the implications of Aeromonas species in human pathology. These species were described as being involved in intestinal (several outbreaks of acute gastroenteritis of choleric/dysenteric form or chronic diarrhoea, ulcerative colitis, etc.) in normal adults or children, as well as in extraintestinal infections in immunocompromised hosts.