[Scabies in 2012]. / La gale en 2012.

Scabies is a parasitic infection known all over the world and particularly in a low socioeconomic context and in institutions. The transmission is mainly direct from skin-to-skin. An increase of cases has been observed in Geneva since October 2011. To confirm the diagnosis, a precise clinical and microbiological examination is required and highly recommended before starting a treatment. Scabies management includes treatment of the patient and his close contacts with antiparasitic drugs as well as thorough cleaning of clothes and bed linen. When available, oral ivermectine is the treatment of choice, topical permethrine is prescribed when ivermectine cannot be used or in association with it in severe presentations. In Switzerland, ivermectine is not readily available, it is expensive and not reimbursed by insurances.

[Management of lice infestations, recommendations for 2012]. / Prise en charge des pédiculoses en 2012.

Pediculosis is the most frequent and contagious ectoparasitic infestation in human, particularly in children from 3 to 8 years of age. Epidemics are observed from time to time, in schools or in adults in prisons. Even though benign, these infections remain unpleasant and can have an important psyco-social impact. Since a few years, caregivers have to face increasing problems while treating lice: appearance of insecticide resistances, lindane's withdrawal from the market and the marketing of new products which are not always well evaluated. This article offers first recalls about pediculoses and then a sum up of the different available treatments with an evidence based management strategy.

Telepresence experienced in videoconference varies according to emotions involved in videoconference sessions.

Previous studies have linked telepresence to the strength of the therapeutic relationship experienced during telepsychotherapy. This finding comes as a surprise for many people who have been involved in a teleconference meeting, where telepresence is often considered weak. The aim of this study is to (re)evaluate the impact of emotional engagement on telepresence. Participants were randomly assigned to one of the two conditions: (a) emotionally charged verbal exchange first (followed by a more neutral verbal exchange), or (b) emotionally neutral verbal exchange first (followed by an emotionally charged verbal exchange). A distraction task was performed between the two verbal exchanges in videoconference. Results showed that verbal exchanges involving stronger emotions increase telepresence. These results may explain why telepresence is so high in telepsychotherapy.

[Provides a guide to self-treatment as ethically acceptable compensation for having participated in a psychiatry research project]. / Offrir un manuel d'auto-traitement en guise de compensation ethiquement acceptable pour avoir participé a un projet de recherche en psychiatrie.

Due to ethical constraints imposed by Research Ethics Board, it may be difficult to offer participants adequate compensations for their involvement in the study, or compensations that do not have a coercive impact on the participant's ability to refuse to participate. The current study aims at providing empirical data supporting an innovative solution: the provision of a self-help treatment manual. The samples consists of 33 adults (24 females, 9 males) aged between 20 and 59 and all suffering from pathological fear of heights. After participating in an experimental study, participants received a self-help manual to treat their acrophobia on their own. The severity of their claustrophobia was measured before and six months after participants were instructed on how to use the self-help book as a compensatory measure for their participation. Data also suggests that the participants were satisfied with the help provided in the self-treatment manual and that this is perceived in a positive way. To sum up, this study is not an outcome study for a new form of therapy; it simply offers researchers data supporting the use of an alternative compensatory measure. Indeed, using a self-help book represents an interesting solution.

Role of lipid composition and lipid peroxidation in the sensitivity of fungal plant pathogens to aluminum chloride and sodium metabisulfite.

Aluminum chloride and sodium metabisulfite have shown high efficacy at low doses in controlling postharvest pathogens on potato tubers. Direct effects of these two salts included the loss of cell membrane integrity in exposed pathogens. In this work, four fungal potato pathogens were studied in order to elucidate the role of membrane lipids and lipid peroxidation in the relative sensitivity of microorganisms exposed to these salts. Inhibition of mycelial growth in these fungi varied considerably and revealed sensitivity groups within the tested fungi. Analysis of fatty acids in these fungi demonstrated that sensitivity was related to high intrinsic fatty acid unsaturation. When exposed to the antifungal salts, sensitive fungi demonstrated a loss of fatty acid unsaturation, which was accompanied by an elevation in malondialdehyde content (a biochemical marker of lipid peroxidation). Our data suggest that aluminum chloride and sodium metabisulfite could induce lipid peroxidation in sensitive fungi, which may promote the ensuing loss of integrity in the plasma membrane. This direct effect on fungal membranes may contribute, at least in part, to the observed antimicrobial effects of these two salts.

The Pseudozyma flocculosa actin promoter allows the strong expression of a recombinant protein in the Pseudozyma species.

Fungi belonging to the recently classified genus Pseudozyma possess some unique properties such as biocontrol activity, production of rare antimicrobial glycolipids and production of recombinant proteins. In this work, we report the first cloning of a promoter endogenous to the multi-faceted yeast-like Pseudozyma flocculosa, that of the actin gene. The promoter region lacked typical TATA or CAAT box but displayed three putative GC box and two CT-rich regions. As in other related basidiomycetes, only one copy of the actin gene was present in the genome of P. flocculosa. The activity of the actin promoter was compared to that of the HSP70 promoter from Ustilago maydis in two Pseudozyma species. In P. flocculosa, the actin promoter allowed the expression of a very high amount of GFP protein (27.8 mg g(-1) total protein) compared to those obtained with the HSP70 promoter in liquid culture. By contrast, the levels of GFP expression obtained in liquid culture were similar with the actin or the HSP70 promoter in Pseudozyma antarctica. A similar pattern of GFP expression was observed in solid culture. The cloning of this new promoter offers a unique genetic tool to further exploit and study the unusual properties of fungi from the Pseudozyma genus.