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Les cicatrices hypochromiques sont la source d’un préjudice esthétique avec retentissement psycho-social parfois important. Les greffes de mélanocytes pourraient constituer une thérapeutique intéressante dans cette indication, possible en cabinet avec le kit Viticell®permettant la réalisation d’une greffe autologue d’une suspension de mélanocytes. Dans le vitiligo stable, segmentaire ou focal, cette technique permet une repigmentation significative chez plus de 70 % des patients. Cette étude préliminaire a pour objectif d’évaluer le kit Viticell®dans la repigmentation de cicatrice hypochromiques.

L’enseignement de la chirurgie cutanée par de la vidéo est à notre avis incontournable. Véritables tutoriels, de courtes séquences vidéos permettent d’objectiver les points clés d’une chirurgie faite de nombreux détails techniques.

An approach to the quantification of national exposure to price shocks in agricultural commodities is presented, as well as exposure to shocks in the prices of specific goods in the nation's trade bundle. This bundle is treated as a portfolio, and the risk is measured on this basis. These measures involve the variances and covariances of price shocks and net import/export weights. In order to characterize the price uncertainty, ARIMA models are fitted to the price series, and the associated residuals are used to obtain the required variances and covariances. This approach is implemented for the agricultural balance of trade in nine major international commodities for seventeen countries. The countries were chosen to represent a mix of development levels and strategies: industrialized, low income with industrial base, low income primary exporters and non-market economies. We find that low income primary exporters are subject to risk which is dramatically higher than the other participants in the system. For the remaining countries, no clear pattern emerges between, for example, North and South or market economies versus non-market economies.