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排序方式: 共有435条查询结果,搜索用时 15 毫秒
51.
J K Trupiano B A Sebek J Goldfarb L R Levy G S Hall G W Procop 《Clinical infectious diseases》2001,33(1):131-134
We describe a patient with granulomatous mastitis due to Mycobacterium abscessus that presented as a mass lesion and was associated with a pierced nipple. To our knowledge, this is the first reported case of mastitis due to M. abscessus and the first association of this organism with body piercing. 相似文献
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U. Reischl M. J. Tuohy G. S. Hall G. W. Procop N. Lehn H. Linde 《European journal of clinical microbiology & infectious diseases》2007,26(2):131-135
In order to assess the speed and accuracy of a real-time PCR assay targeting the lukS-PV gene of Panton–Valentine leukocidin (PVL)-positive Staphylococcus aureus, 700 S. aureus strains were tested and the results were compared to those achieved with block cycler PCR. Cross-reactivity was tested with
166 other bacterial species. Using this homogeneous real-time PCR assay format, the presence or absence of genetic information
for PVL, which is also found in community-associated methicillin-resistant S. aureus, was correctly identified from pure culture and directly in various types of clinical specimens. 相似文献
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Plasticity of representational maps in adult cerebral cortex has been
documented in both sensory and motor cortex, but the anatomical basis for
cortical plasticity remains poorly understood. To investigate horizontal
connectivity in primary motor cortex (M1) as a putative anatomical
substrate for short-term, functional plasticity of adult motor cortical
representations, a combination of electrical stimulation and biocytin
labeling was used to examine pre-existing patterns of intrinsic connections
in adult rat M1 in relationship to the pattern of reorganization of the
motor movement may induced by transection of the contralateral facial
nerve. Two hours after nerve cut, small, circumscribed regions of the
forelimb representation expanded medially into territory previously devoted
to the vibrissae representation. Outside of this novel, expanded forelimb
region, no forelimb movement could be evoked from the former vibrissae
representation at any time over the period of hours tested, thus
representing silent cortex. Injections placed into vibrissae cortex
representing the newly expanded forelimb representation gave rise to
labeled axons and dense terminal fiber labeling which crossed the
forelimb/vibrissae border and extended up to 1.2 mm within the
low-threshold forelimb representation. In contrast, injections placed into
silent vibrissae cortex gave rise to labeled axons and terminal boutons
which remained mostly restricted to the original vibrissae representation,
with only sparse projections that crossed into the low-threshold forelimb
representation. Thus, these results suggest that the extent of short-term,
functional reorganization of M1 induced within the first several hours
following peripheral nerve cut is mediated, and constrained, by an
anatomical framework of pre-existing, horizontal projections which traverse
representation borders.
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One hundred fifty-one consecutive patients scheduled for double-contrast barium enema studies were assigned randomly to insufflation with either air or carbon dioxide (CO2) in a double-blind, prospective trial. Within 24 hours after the enema study, the patients were contacted by telephone by an interviewer, who completed a standard questionnaire. Radiographs from the enema studies were assessed for quality by two radiologists. Pain experienced after the procedure was graded from 0 (none) to 4 (severe). Clinically relevant (grades 2-4) pain was experienced by 30% of patients after insufflation with room air, compared with 11% of patients in whom CO2 was used for insufflation (P = .005). The mean pain score for CO2 was 0.4, and for room air, 1.2 (P less than .005). Although five patients experienced grade 4 pain after insufflation with air, no patient reported severe pain after CO2 insufflation. Post-evacuation films confirmed there was significantly less residual gas in the CO2 group. The quality of radiographs was equal in the two groups. CO2 has advantages for use in the double-contrast barium enema examination. 相似文献