L'hygiène du syphilitique (2e édition revue et augmentée) / par le Dr H. Bourges,...

Collection : Bibliothèque d'hygiène thérapeutique ; [VI]

Late onset tacrolimus-induced life-threatening polyneuropathy in a kidney transplant recipient patient

A 59-year-old kidney recipient was diagnosed with a late onset of severe chronic inflammatory demyelinating polyradiculoneuropathy and almost fully recovered after stopping tacrolimus and one course of intravenous immunoglobulin treatment. Unique features of this patient are the unusually long time lapse between initiation of tacrolimus and the adverse effect (10 years), a strong causality link and several arguments pointing toward an inflammatory etiology. When facing new neurological signs and symptoms in graft recipients, it is important to bear in mind the possibility of a drug-induced adverse event. Discontinuation of the suspect drug and immunomodulation are useful treatment options.

Signal peptide and helical bundle domains of virulent canine distemper virus fusion protein restrict fusogenicity.

Persistence in canine distemper virus (CDV) infection is correlated with very limited cell-cell fusion and lack of cytolysis induced by the neurovirulent A75/17-CDV compared to that of the cytolytic Onderstepoort vaccine strain. We have previously shown that this difference was at least in part due to the amino acid sequence of the fusion (F) protein (P. Plattet, J. P. Rivals, B. Zuber, J. M. Brunner, A. Zurbriggen, and R. Wittek, Virology 337:312-326, 2005). Here, we investigated the molecular mechanisms of the neurovirulent CDV F protein underlying limited membrane fusion activity. By exchanging the signal peptide between both F CDV strains or replacing it with an exogenous signal peptide, we demonstrated that this domain controlled intracellular and consequently cell surface protein expression, thus indirectly modulating fusogenicity. In addition, by serially passaging a poorly fusogenic virus and selecting a syncytium-forming variant, we identified the mutation L372W as being responsible for this change of phenotype. Intriguingly, residue L372 potentially is located in the helical bundle domain of the F(1) subunit. We showed that this mutation drastically increased fusion activity of F proteins of both CDV strains in a signal peptide-independent manner. Due to its unique structure even among morbilliviruses, our findings with respect to the signal peptide are likely to be specifically relevant to CDV, whereas the results related to the helical bundle add new insights to our growing understanding of this class of F proteins. We conclude that different mechanisms involving multiple domains of the neurovirulent A75/17-CDV F protein act in concert to limit fusion activity, preventing lysis of infected cells, which ultimately may favor viral persistence.

Lésions de surcharge du membre inférieur chez le jeune footballeur

Résumé Le point de départ de ce travail est une passion pour le sport en général. L'intérêt s'est porté sur la répercussion du sport sur un organisme en croissance. Le football semble lié à une forte proportion de douleurs et de lésions des membres inférieurs. Après consultation de la littérature, il ressort qu'il n'existe pas d'étude spécifique sur les lésions de surcharge chez le jeune footballeur, bien que la mention du football comme facteur de risque des lésions de surcharge soit fréquente. Les lésions les plus souvent évoquées sont la maladie d'Osgood-Schlatter et la maladie de Sever. Un questionnaire a été élaboré, puis distribué aux juniors des clubs de football de Monthey et de Sion. Il comporte plusieurs volets tels que les données personnelles (poids, âge, taille, pied dominant), l'évolution de l'enfant au sein du club et les douleurs/lésions des membres inférieurs. Par la suite, les médecins traitants ont été contactés afin de préciser les diagnostics. 326 jeunes footballeurs ont participé à cette étude transversale. On recense 30 cas (9,7%) de pathologie de surcharge du membre inférieur dont 17 cas répondent au diagnostic d'ostéochondrose. 11 enfants ont été atteints de la maladie d'Osgood-Schlatter à un âge moyen de 12,3 ans (extrêmes 7 et 16 ans), elle est survenue après 4,7 ans d'entraînement en junior et la jambe de tir n'a pas d'influence sur le côté lésé. Dans ce groupe, 2 joueurs faisaient partie de la catégorie élite ce qui représente deux heures d'entraînement de plus par semaine que pour des jeunes d'âge équivalent. La maladie de Sever a affecté 6 jeunes entre 11 et 13 ans, soit à un âge moyen de 11,6 ans. Elle est apparue après une moyenne de 3,6 ans de football en junior. Le pied dominant n'a également que peu d'influence sur le côté lésé, par contre les lésions bilatérales sont plus fréquentes que dans le cadre de la maladie d'Osgood-Schlatter. Parmi ces joueurs, 4 sur 6 avaient un encadrement privilégié en élite avec une demi-heure d'entraînement supplémentaire par semaine par rapport à des jeunes d'âge équivalent. Le traitement de ces pathologies reste un arrêt ou du moins une modification de l'activité sportive. Il faut s'attacher à corriger les troubles statiques et reprendre l'entraînement en fonction des douleurs. Le moment où le jeune sportif concentre beaucoup d'espoirs correspond à une période de fragilité physique et psychologique. C'est pourquoi, il est important que les responsables des jeunes footballeurs, ainsi que les médecins qui les entourent soient conscients des facteurs de risque de chaque individu et inhérents à la pratique de ce sport.

Differential expression of 240 kDa ConA-binding glycoprotein in vitro and in vivo detected by immunochemical methods.

The expression of the 240 ConA-binding glycoprotein (240 kDa), a marker of synaptic junctions isolated from the rat cerebellum, was studied by immunocytochemical techniques in forebrain and cerebellum from rat and chicken, and in chick dorsal root ganglia. Parallel studies were carried out either on tissue sections or in dissociated cell cultures. In all cases non neuronal cells were not immunostained. The tissue sections of cerebellum from rat and chick exhibited 240 kDa glycoprotein immunoreactivity, especially in the molecular layer, while the forebrain sections from rat and chick did not show any significant immunostaining. In contrast, in dissociated forebrain cell cultures, all neuronal cells expressed 240 kDa glycoprotein immunoreactivity, while glial cells remained totally unlabelled. In tissue sections of dorsal root ganglion (DRG), sensory neurons expressed the 240 kDa only after the embryonic day (E 10). A large number of small neurons in the dorsomedial part of DRG were immunostained with 240 kDa glycoprotein antiserum, whereas only a small number of neurons in the ventrolateral part of the ganglia displayed 240 kDa immunoreactivity. In dissociated DRG cells cultures (mixed or neuron-enriched DRG cell cultures) all the neuronal perikarya but not their processes were stained. These studies indicate that 240 kDa glycoprotein expression is completely modified in cultures of neurons of CNS or PNS since the antigen becomes synthetized in high amount by all cells independent of synapse formation. This demonstrates that the expression of 240 kDa is controlled by the cell environment.

Anciens catalogues de la Bibliothèque du Roi et de différentes collections qui sont venues l'accroître aux XVIIe, XVIIIe et XIXe siècles. Catalogues de divers fonds orientaux.

« Notices sur quelques manuscrits arabes, par M. Woepke (fol. 1) ; — Notices sur quelques mss. sanscrits, par M. Fauriel (fol. 6) ; — Notices sur quelques mss. sanscrits (fol. 40) ; — Notices sur quelques mss. sanscrits en caractère bengali, par M. Loiseleur Deslongchamps (fol. 58) ; — Notices sur quelques mss. arabes, par M. Hassler (fol. 94) ; — Notices sur quelques mss. arabes, par M. Reinaud (fol. 99) ; — Catalogue des mss. orientaux de l'ancienne maison de la Sorbonne, par M. Reinaud (fol. 126) ; — Catalogue des mss. orientaux de l'ancien couvent de l'Oratoire, par M. Reinaud (fol. 136) ; — Catalogue des mss. orientaux des différentes bibliothèques publiques de Paris (fol. 146) ; — Liste des livres et des mss. orientaux venus d'Alger et adressés à la Bibliothèque royale, le 30 nov. 1832 (fol. 152) ; — Note de quelques mss. orientaux appartenant à M. Wahl (fol. 156) ; — Mss. orientaux provenant de feu M. Schultz (fol. 157 et 159) ; — Mss., papiers et autres objets provenant de feu M. Schultz (fol. 163) ; — Collection Asselin (fol. 165 et 270) ; — Lettres et pièces relatives au fonds Asselin (fol. 263) ; — Mss. arabes, persans, samskrits et hindous tanys, cédés à la Bibliothèque du Roi par M. de Polier (fol. 291 et 293) ; — Évaluation de 47 mss. arabes, persans, maures, bengalis, etc., provenant de feu Ouessant, interprète de la Compagnie de Pondichéry (fol. 295) ; — Mss. arabes, turcs et persans de M. Ducaurroy (fol. 298) ; — Collection des mss. orientaux appartenant à la succession de feu M. le baron Rousseau, consul général à Tripoly de Barbarie (fol. 303) ; — Liste des mss. tamouls cédés à la Bibliothèque du Roi par M. Ducler (fol. 309) ; — Liste des mss. tamouls donnés à la Bibliothèque du Roi par M. Reydelet (fol. 311) ; — Mss, arabes et berbères de M. Delaporte père, 4848 (fol. 314) ; — État sommaire de quelques mss. réputés venir de feu M. Huet,... trouvés dans la maison Kerboeuf (fol. 323) ; — Mss. orientaux distraits du fonds Renaudot (fol. 324) ; — Mss. arabes rapportés d'Égypte par le citoyen Raiye (fol. 325) ; — Cinq volumes arabes mss. offerts à la Bibliothèque royale par S. A. R. Mgr le duc de Nemours (fol. 326) ; — Liste des livres qu'on a envoyés à Mrs de la Compagnie, en tamoul, 14 déc. 1729 (fol. 327) ; — Catalogue des mss. indiens de la Bibliothèque du Roi (fol. 328) ; — « Mémoire concernant l'acquisition des mss. persiens qu'il conviendroit de faire aux Indes pour la Bibliothèque du Roy » (fol. 362) ; — Mémoire de livres à rechercher dans le Levant pour la Bibliothèque du Roy (fol. 366) ; — État des mss. à rechercher à Constantinople pour la Bibliothèque impériale (fol. 384) ; — Catalogue des mss. orientaux appartenant à M. R. Johnson, 1806 (fol. 386) ; — Liste des mss. orientaux de la bibliothèque de sir Thomas Phillipps à Middlehill, 1829 (fol. 396) ; — Indication des mss. arabes les plus importants de la bibliothèque d'Alger (fol. 398) ; — Liste des livres et mss. venus d'Alger (fol. 402) ; — Liste des bibliothèques turques de Constantinople, 1854 (fol. 404) ; — Bibliothèque du sultan Ahmet III, au vieux sérail : catalogue des livres d'histoire, 1854 (fol. 408) ; — Note des mss. orientaux extraits de la bibliothèque de Vienne, que le conservatoire de la Bibliothèque impériale juge entièrement inutiles (fol. 416) ; — Notice par Ascari de l'ancien ms. syriaque 13 (fol. 418) ; — Manuscrits persans historiques de l'Indoustan, et livres en langue samscretam, apportés à la Bibliothèque du Roi en 1778 » (fol. 420).

Persistence of Increased Eotaxin-1 (CCL11) Level in Tears of Patients Wearing Contact Lenses: A Long-Term Follow-Up Study.

BACKGROUND: Eotaxin-1 (CCL11) is a potent eosinophil chemotactic and activating peptide that may be implicated in the pathogenesis of chronic allergic eye disease and has been associated with the wearing of contact lenses (CL) in patients with contact lens papillary conjunctivitis (CLPC). The purpose of this study was to study eotaxin-1 expression in the tears of long-term CL wearers. PATIENTS AND METHODS: Tears were collected with glass capillaries from 15 patients (2 male, 13 female) with various degree of CLPC at 2-year intervals. CLPC severity was graded from 0 to 4 with reference to standard slit-lamp photographs of the superior tarsal conjunctiva. The eotaxin-1 level in the tears was measured by an ELISA, using mouse anti-human eotaxin monoclonal antibodies. RESULTS: The mean age was 32.5 ± 13.3 years (range: 17 - 69 years). The mean interval between the tear collections was 30 ± 4.8 months. The mean concentration of eotaxin was 2150 ± 477 pg/mL and 2486 ± 810 pg/mL for the first and second series, respectively. The difference was not statistically significant (paired Wilcoxon/Kruskal-Wallis, p = 0.803). The mean score of papilla grade was 1.26 ± 0.18 for the first sample and 1.40 ± 0.19 two years later. There was no significant difference of grading between the two time periods (paired Wilcoxon/Kruskal-Wallis, p = 0.751). CONCLUSIONS: the eotaxin-1 level remains up-regulated over a long time period in patients wearing CL, most of them with chronic CLPC. Eotaxin may play a role in the pathogenesis of contact lens intolerance.

Reference values and factors associated with renal resistive index in a family-based population study.

Increased renal resistive index (RRI) has been recently associated with target organ damage and cardiovascular or renal outcomes in patients with hypertension and diabetes mellitus. However, reference values in the general population and information on familial aggregation are largely lacking. We determined the distribution of RRI, associated factors, and heritability in a population-based study. Families of European ancestry were randomly selected in 3 Swiss cities. Anthropometric parameters and cardiovascular risk factors were assessed. A renal Doppler ultrasound was performed, and RRI was measured in 3 segmental arteries of both kidneys. We used multilevel linear regression analysis to explore the factors associated with RRI, adjusting for center and family relationships. Sex-specific reference values for RRI were generated according to age. Heritability was estimated by variance components using the ASSOC program (SAGE software). Four hundred women (mean age±SD, 44.9±16.7 years) and 326 men (42.1±16.8 years) with normal renal ultrasound had mean RRI of 0.64±0.05 and 0.62±0.05, respectively (P<0.001). In multivariable analyses, RRI was positively associated with female sex, age, systolic blood pressure, and body mass index. We observed an inverse correlation with diastolic blood pressure and heart rate. Age had a nonlinear association with RRI. We found no independent association of RRI with diabetes mellitus, hypertension treatment, smoking, cholesterol levels, or estimated glomerular filtration rate. The adjusted heritability estimate was 42±8% (P<0.001). In a population-based sample with normal renal ultrasound, RRI normal values depend on sex, age, blood pressure, heart rate, and body mass index. The significant heritability of RRI suggests that genes influence this phenotype.

Changes in nuclear 3,5,3'-triiodothyronine receptor expression in rat dorsal root ganglia and sciatic nerve during development: comparison with regeneration.

The action of the thyroid hormones on responsive cells in the peripheral nervous system requires the presence of nuclear triiodothyronine receptors (NT3R). These nuclear receptors, including both the alpha and beta subtypes of NT3R, were visualized by immunocytochemistry with the specific 2B3 monoclonal antibody. In the dorsal root ganglia (DRG) of rat embryos, NT3R immunoreactivity was first discretely revealed in a few neurons at embryonic day 14 (E14), then strongly expressed by all neurons at E17 and during the first postnatal week; all DRG neurons continued to possess clear NT3R immunostaining, which faded slightly with age. The peripheral glial cells in the DRG displayed a short-lived NT3R immunoreaction, starting at E17 and disappearing from the satellite and Schwann cells by postnatal days 3 and 7 respectively. In the developing sciatic nerve, Schwann cells also exhibited transient NT3R immunoreactivity restricted to a short period ranging from E17 to postnatal day 10; the NT3R immunostaining of the Schwann cells vanished proximodistally along the sciatic nerve, so that the Schwann cells rapidly became free of detectable NT3R immunostaining. However, after the transection or crushing of an adult sciatic nerve, the NT3R immunoreactivity reappeared in the Schwann cells adjacent to the lesion by 2 days, then along the distal segment in which the axons were degenerating, and finally disappeared by 45 days, when the regenerating axons were allowed to re-occupy the distal segment.(ABSTRACT TRUNCATED AT 250 WORDS)

[Sicile. Musées, fragments des temples de Sélinonte]

Référence bibliographique : Weigert, 326

[Pavie. Certosa di Pavia]

Référence bibliographique : Weigert, 326