14 research outputs found

    [Evaluation of the cytotoxicity of antiseptics used in current practice on cultures of fibroblasts and keratinocytes]

    No full text
    International audienceInfection is the greatest problem in burn patients and topical antiseptics must be chosen with great care especially when cultured skin is grafted. We examined the cytotoxicity of 6 antiseptics commonly used on cultured human fibroblasts and keratinocytes. Cultured cells were exposed for 15 min to Hibitane (chlorhexidine), Biseptine (chlorhexidine + benzalkonium chloride + benzylic alcool), dermic Betadine (polvidone iodine + nonoxinol), scrub Betadine (polyvidone iodine + quaternary ammonium) and gynecologic Betadine (polyvidone iodine). The cell viability was determined using the MTT test. At therapeutic concentration all the antiseptics were cytotoxic for fibroblasts and keratinocytes. The data suggest that the antiseptics must be used in function of the time of the grafting of the cultured epithelium.Infection is the greatest problem in burn patients and topical antiseptics must be chosen with great care especially when cultured skin is grafted. We examined the cytotoxicity of 6 antiseptics commonly used on cultured human fibroblasts and keratinocytes. Cultured cells were exposed for 15 min to Hibitane (chlorhexidine), Biseptine (chlorhexidine + benzalkonium chloride + benzylic alcool), dermic Betadine (polvidone iodine + nonoxinol), scrub Betadine (polyvidone iodine + quaternary ammonium) and gynecologic Betadine (polyvidone iodine). The cell viability was determined using the MTT test. At therapeutic concentration all the antiseptics were cytotoxic for fibroblasts and keratinocytes. The data suggest that the antiseptics must be used in function of the time of the grafting of the cultured epithelium

    Les maladies du bois de la vigne : recherches pour apporter des solutions de lutte aux Professionnels

    No full text
    Les travaux rĂ©alisĂ©s sur deux maladies du bois de la vigne (esca, BDA) ont montrĂ© leur effet sur la rĂ©colte et la croissance de la pousse printaniĂšre qui Ă©tait annulĂ© deux annĂ©es aprĂšs l’apparition des symptĂŽmes. Ces maladies ont aussi conduit Ă  des modifications des propriĂ©tĂ©s analytiques des moĂ»ts et des vins. Les vins issus de raisins collectĂ©s sur des ceps symptomatiques n’étaient pas toujours les plus dĂ©prĂ©ciĂ©s. Les Ă©tudes effectuĂ©es sur le cycle biologique ont permis de mettre au point des outils pour diffĂ©rencier les individus de deux espĂšces de Botryosphaeriaceae et des outils d’hybridation in situ qui permettront de les localiser prĂ©cisĂ©ment dans les tissus. Elles ont aussi identifiĂ© la pĂ©riode de sensibilitĂ© de la plante face Ă  ces champignons et montrĂ© l’importance de deux facteurs (stade phĂ©nologique, charge) pour leur dĂ©veloppement. Les organes porteurs de leurs sources d’inoculum ont Ă©tĂ© identifiĂ©s et une mĂ©thode a Ă©tĂ© mise au point pour les quantifier. Parmi les pratiques agronomiques testĂ©es (taille, densitĂ©, amĂ©nagement de coteaux), aucunes n’influaient sur leur expression dans le vignoble, la situation semblait avoir plus d’importance que les pratiques testĂ©es. Enfin, la production de plants totalement exempts de champignons pathogĂšnes ou moins porteurs n’a pas Ă©tĂ© efficace dans la lutte contre ces maladies
    corecore