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991.
J. Ruiz M. L. Núñez M. A. Sempere J. Díaz J. Gómez 《European journal of clinical microbiology & infectious diseases》1995,14(5):454-456
Three previously healthy children developed gastroenteritis which led within a few days to systemic infections, two cases of bacteremia and one of meningitis. A lactose-fermentingSalmonella virchow strain was isolated from cerebrospinal fluid and blood cultures. In one case, this strain was also isolated from stool cultures. All the children had been fed the same milk formula. There was no other relationship between them. The batch of dried-milk formula was confirmed as the source of the infection by isolation of an identical lactose-fermentingSalmonella virchow strain by the Centro Nacional de Alimentación. 相似文献
992.
Vasculogenesis and angiogenesis are involved in a coordinated program for the development of the mesonephric subcardinal venous
plexus of quail embryo. Vasculogenesis occurs between days 3 and 4 of incubation, while angiogenesis takes place from day
5 to day 7. Examination of vascular corrosion casts and whole mounts, and tissue sections labelled with specific markers to
hemangioblast lineage (QH1, LEP100 and AcPase activity), allowed us to distinguish six phases in the formation of subcardinal
plexus. (1) Appearance of isolated angioblast-like cells where the subcardinal plexus will form. (2) Alignment of angioblast-like
cells into cellular strands. (3) Formation of compact vascular cords by association of angioblast-like strands. (4) Polygonal
interconnection of vascular cords to constitute the primary subcardinal plexus. In this stage, isolated angioblast-like cells
were present inside inter-vascular spaces. (5) The splitting of primary inter-vascular spaces by angiogenic sprouts to form
secondary subcardinal plexus (outward angiogenesis). Isolated angioblast-like cells were not present in this stage. (6) Expansion
of the secondary subcardinal plexus by insertion of slender transcapillary tissue pillars (inward angiogenesis) and angiogenic
sprouts. We also describe three morphogenetic gradients during the development of the subcardinal plexus: ventral-to-dorsal,
cranial-to-caudal and lateral-to-medial.
Accepted: 9 November 2001 相似文献
993.
994.
We analyzed the kinetics of heart rate (HR) response during incremental treadmill exercise in thirteen master runners (62 +/- 1 yr). The HR/running speed (HR/S) relationship showed the existence of a point of downward deflection (HR(d)) in only approximately 31% of the subjects. Resting echocardiographic evaluations showed similar heart dimensions in all of the subjects. In conclusion, HR does not seem to show a curvilinear response (downward deflection) in most aged athletes. 相似文献
995.
996.
997.
Fluid was collected from cysts ofTaenia hydatigena in 60 adult sheep and fluid from each animal pooled separately. By double diffusion antigen 5 was demonstrated in all pools but one. The criteria are described for selection and standardization of these preparations for use as antigens for the immunodiagnosis of human hydatid disease. Sera from 50 persons harbouring hydatid cysts and from 50 patients with other disease conditions were examined by the arc-5 double-diffusion test, using two antigens prepared fromEchinococcus granulosus andT. hydatigena cyst fluids, respectively. The results showed that a higher diagnostic sensitivity was obtained with the hydatid antigen. The significance of the findings is discussed in terms of their application to human immunodiagnosis in areas where hydatidosis, but not cysticercosis, is rare in livestock. 相似文献
998.
999.
1000.
Katarina Mitić Stanislava Stanojević Nataša Kuštrimović Mirjana Dimitrijević 《Inflammation research》2007,56(3):S495-S498
The objective of the present study was to investigate the relevance of peripheral macrophage activity for the susceptibility to the induction of experimental allergic encephalomyelitis (EAE). Rats of EAE-susceptible Dark Agouti and EAEresistant Albino Oxford strain were immunized with guinea pig spinal cord homogenate (DAGPSC and AOGPSC), while non-immunized rats served as controls (DANIM, AONIM). On day 15 after immunization rats were sacrificed and their peritoneal macrophages tested for adherence capacity, zymosan phagocytosis and respiratory burst. Macrophages from AONIM rats exhibited lower adherence capacity and higher phagocytosis and H2O2 production when compared to macrophages from DANIM rats. Immunization with GPSC decreased adherence and phagocytosis and increased H2O2 production in macrophages from AO rats, but did not influence these activities in macrophages from DA rats. The results from the present study suggest that inflammatory activities of macrophages from AO rats could be considered as regulatory mechanisms connected with the resistance to EAE induction. 相似文献