Sur la résistance deRickettsiella melolonthae Krieg aux antibiotiques

Zusammenfassung Rickettsiella melolonthae Krieg unterscheidet sich deutlich von den andern Rickettsien durch seine Verh?ltnis mit Beziehung zu Antibiotika und zwar durch seine Resistenz gegen Tetracycline.

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Je remercie vivement le professeurP. Giroud de l'Institut Pasteur pour ses conseils et l'intérêt qu'il a manifesté à ces rechereches.     

La teneur en proline et la résistance des plantes aux sels

Application of sodium chloride to crop plants in the culture medium leads to an increase in their endogenous content of free proline. There is a certain concentration of sodium chloride above which the proline content of the plants strongly rises (critical point). A relationship between endogenous sodium and proline contents could be found. In salt-sensitive plants (wheat) the critical point lies below that of salt-tolerant plants (barley). The critical concentration is not changed by certain alterations of the culture medium. The determination of the critical point by means of measurement of the proline concentration served as a basis for the analysis of the salt tolerance of crop plants.      

Scintigraphie de perfusion cérébrale positionnelle : résultats physiologiques et applications cliniques

To assess the impact of standing on brain perfusion, 125 brain perfusion scans in the upright and supine position were performed, including 108 patients. Perfusion values were compared using a relative quantitative approach and a segmentation of vascular territories with the help of an atlas of brain perfusion. We found a change in the distribution of the perfusion in favor of the vertebro-basilar system in the upright position. We discuss the case of a patient whose symptoms could be explained with the help of the comparison of brain perfusion scans in the upright and supine position. Atheromatous and post-dissection stenosis and their influence on perfusion are also discussed.     

Quelques considérations sur l'enseignement de la médecine physique et de la réhabilitation

Particularly since World War II physical medicine and rehabilitation have assumed a growing importance. The efforts of the Canadian Association of Physical Medicine and Rehabilitation, following a survey of Canadian universities, to increase the theoretical and practical teaching of physiatrics are emphasized. It is considered important that the teaching of physical medicine and rehabilitation should be carried out concurrently with other medical and surgical teaching programs. Paramedical and auxiliary rehabilitation personnel should participate in the teaching program. The number of hours devoted to physiatrics should be increased, and the medical student should be permitted to choose physical medicine and rehabilitation as a part of his internship program.     

Observations sur la spécificité de la coloration aux acides phosphotungstique et phosphomolybdique

Résumé Les Auteurs ont démontré que, en conditions histochimiques sur du matériel fixé au formol, les acides phosphotungstique et phosphomolybdique ont une double action: 1. une action oxydative à la charge des radicaux PAS-positifs (vic-glycols et éthyleniques) en milieu aqueux, et à la charge des radicaux aminiques en milieu anhydre; cette action entraine la transformation de ces radicaux en aldéhydes; 2. la formation d'une liaison chimique entre les aldéhydes et les molécules des acides phosphomolybdique et phosphotungstique. — La coloration du collagène, au contraire, n'est pas due ni aux radicaux aminiques ni vic-glycols et implique un mécanisme encore inconnu.

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Observations about the specificity of staining of phosphotungstic and phosphomolybdic acid

Summary The authors demonstrated that phosphotungstic and phosphomolybdic acid applied to formol-fixed tissues explete two following actions: 1. An oxidative action on the PAS-positive radicals (double bonds, vic-glycols groups) if in water solution and on aminogroups if in anhydrous solution. This oxidation results in a production of aldehydic radicals 2. The formation of chemical bonds between the aldehydic new-formed groups and the molecules of phosphotungstic or phosphomolybdicacid.— However, the above mentioned mechanism of action is not applicable to the collagen staining for which a different explanation has to be supposed.

     

Sélection dépendant de la fréquence et durée de développement embryonnaire chez Drosophila melanogaster

Sans résuméEquipe de Recherche Associée du C.N.R.S. N^o 406 Analyse et mécanismes de maintien du polymorphisme.     

Résultats fonctionnels de la radiofréquence par Prostiva? dans le traitement de l’hypertrophie bénigne de la prostate (HBP) non compliquée résistante aux traitements médicamenteux

Objective

To assess prospectively on objective and subjective parameters functional outcomes of prostatic thermotherapy by radiofrequency (Prostiva?) on urinary discomfort and sexual life in the treatment of uncomplicated symptomatic and resistant to drug treatment benign prostatic hypertrophy (BPH).

Patients and methods

Patients with eligibility criteria for this treatment published by HAS have been treated in our urology unit. They were called at one month for a clinical examination and analysis of objective data (maximum urine flow [Qmax], post-voiding residual, international prostate score symptom [IPSS]). They were contacted in December 2009 and submitted to a questionnaire on urinary symptoms (IPSS), quality of life (question 8 of IPSS), assessment of sexual function (IIEF, DAN SEX) and subjective assessment of treatment (Likert score).

Results

From December 2006 to January 2009, 20 patients (median age: 63 years) were treated with Prostiva?. Four patients had acute retention of urine in the immediate postoperative needing a urinary catheterization in emergency. We made a systematic evaluation of all patients at one month and in December 2009. The median follow-up was 20.6 months (12?C37 months). There was a significant improvement of IPSS (?6.7 points; IC95= [?10.3; ?3.1]), an improvement of sexuality functions, quality of life data, and a sense of global improvement of urinary symptoms (+ 1.8 = improved on the Likert score). Four patients were considered as failures: three patients resumed drug therapy, one patient received a prostate resection.

Conclusion

Our single centre study performed in selected patients according to the criteria of HAS consolidated the results of published studies. Results were positive on urinary symptoms, with a low morbidity and a positive subjective evaluation on symptoms. It demonstrated the safety of thermotherapy on patients?? sexuality and even better, the positive impact of the treatment on erections and satisfaction relations.