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1.
Joret-Descout P. Dauger S. Bellaiche M. Bourdon O. Prot-Labarthe S. 《International journal of clinical pharmacy》2017,39(1):181-186
International Journal of Clinical Pharmacy - Background Stress ulcer prophylaxis (SUP) is recommended in some situations to prevent upper gastrointestinal bleeding and is a component of standard... 相似文献
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Hélène Marchand-Libouban Bernard Guillaume Norbert Bellaiche Daniel Chappard 《Clinical oral investigations》2013,17(4):1267-1272
Objective
Bone implants are now widely used to replace missing teeth. Bone grafting (sinus lift) is a very useful way to increase the bone volume of the maxilla in patients with bone atrophy. There is a 6- to 9-month delay for the receiver grafted site to heal before the implants can be placed. Computed tomography is a useful method to measure the amount of remaining bone before implantation and to evaluate the quality of the receiver bone at the end of the healing period. Texture analysis is a non-invasive method useful to characterize bone microarchitecture on X-ray images.Patients and methods
Ten patients in which a sinus lift surgery was necessary before implantation were analyzed in the present study. All had a bone reconstruction with a combination of a biomaterial (beta tricalcium phosphate) and autograft bone harvested at the chin. Computed tomographic images were obtained before grafting (t0), at mid-interval (t1, 4.2?±?0.7 months) and before implant placement (t2, 9.2?±?0.6 months). Texture analysis was done with the run-length method.Results
A significant increase of texture parameters at t1 reflected a gain of homogeneity due to the graft and the beginning of bone remodeling. At t2, some parameters remained high and corresponded to the persistence of bone trabeculae while the resorption of biomaterials was identified by other parameters which tended to return to pregraft values.Conclusion
Texture analysis identified changes during the healing of the receiver site.Clinical relevance
The method is known to correlate with microarchitectural changes in bone and could be a useful approach to characterized osseointegrated grafts. 相似文献3.
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Yuseff MI Reversat A Lankar D Diaz J Fanget I Pierobon P Randrian V Larochette N Vascotto F Desdouets C Jauffred B Bellaiche Y Gasman S Darchen F Desnos C Lennon-Duménil AM 《Immunity》2011,35(3):361-374
Engagement of the B cell receptor (BCR) by surface-tethered antigens (Ag) leads to formation of?a synapse that promotes Ag uptake for presentation onto major histocompatibility complex class II (MHCII) molecules. We have highlighted the membrane trafficking events and associated molecular mechanisms involved in Ag extraction and processing at the B cell synapse. MHCII-containing lysosomes are recruited to the synapse where they locally undergo exocytosis, allowing synapse acidification and the extracellular release of hydrolases that promote the extraction of the immobilized Ag. Lysosome recruitment and secretion results from the polarization of the microtubule-organizing center (MTOC), which relies on the cell division cycle (Cdc42)-downstream effector, atypical protein kinase C (aPKCζ). aPKCζ is phosphorylated upon BCR engagement, associates to lysosomal vesicles, and is required for their polarized secretion at the B cell synapse. Regulation of B lymphocyte polarity therefore emerges as?a central mechanism that couples Ag extraction to Ag processing and presentation. 相似文献
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C Heilbronner M Harzic F Ferchal A Pothier O Charara G Beal M Bellaiche C Lesca P Foucaud 《Archives de pédiatrie》2004,11(4):335-339
Although human cowpox virus infection is rare nowadays, an animal reservoir of this virus still exists. The general course of cowpox virus infections is usually benign but the diagnosis is difficult and often late. CASE REPORT: An 11-year-old boy, owner of two cats, presented with an infected sacral wound lesion associated with fever and lymph nodes. The wound became necrotic and other cutaneous and mucous membrane lesions developed secondarily. Blood tests did not show hyperleukocytosis or a systemic inflammatory response. Concurrently one of the cats was examined by a veterinary because of multifocal cutaneous lesions. Evocative skin biopsy specimens from the animal and, secondarily from the patient, allowed the identification of orthopoxvirus. Evolution was slowly favourable under symptomatic treatment. CONCLUSION: Poxviruses are responsible for many animal and human diseases, the most famous of them being smallpox which today is considered eradicated. Vaccination against smallpox is no longer performed since 1977. Whether the arrest of vaccinations against smallpox may induce the apparition of other poxviruses infections or alter their clinical expression is an open question. 相似文献
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J. Brenner M. Bellaiche E. Gross D. Elad Z. Oved M. Haimovitz A. Wasserman O. Friedgut Y. Stram V. Bumbarov H. Yadin 《Vaccine》2009,27(10):1500-1503
The ultimate goal of a vaccine is to protect vaccinated animals against re-exposure to the same pathogen and provide sterile immunity. However, a cutaneous clinical manifestation appeared, following re-exposure of cattle that had been vaccinated with the RM65 strain, to LSDV infection during an epidemic in 2006–2007. Four thousand six hundred and seven vaccinated cows entered the study after being re-exposed to LSDV infection. Of them, 513 (11%) presented lumps, and there was a marked difference between the proportions of dairy and feedlot animals that were affected: 146 out of 3517 and 367 out of 1090 (6.6 and 33.7%, respectively). This data suggests that the potency of the vaccine need to be re-assessed for beef cattle. 相似文献