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排序方式: 共有545条查询结果,搜索用时 7 毫秒
541.
542.
A case of secretory carcinoma of the breast in a 48-year-old woman studied by fine needle aspiration (FNA) cytology is presented. The prominent intracytoplasmic vacuolization and numerous signet-ring forms and the presence of sheets of neoplastic cells with large intercellular spaces should permit its diagnosis in FNA specimens. The differential diagnosis of this rare lesion from other breast neoplasms that show similar features is discussed. 相似文献
543.
Deiviane Aparecida Calegar Beatriz Coronato Nunes Kerla Joeline Lima Monteiro Jéssica Pereira dos Santos Helena Keiko Toma Tais Ferreira Gomes Marli Maria Lima Márcio Neves Bóia Filipe Anibal Carvalho-Costa 《Memórias do Instituto Oswaldo Cruz》2016,111(2):114-119
This study aimed to estimate the frequency, associated factors, and molecular
characterisation of Entamoeba histolytica, Entamoeba
dispar, Entamoeba moshkovskii, andEntamoeba
hartmanni infections. We performed a survey (n = 213 subjects) to obtain
parasitological, sanitation, and sociodemographic data. Faecal samples were processed
through flotation and centrifugation methods.E. histolytica,
E. dispar, E. moshkovskii, and E.
hartmanni were identified by nested-polymerase chain reaction (PCR). The
overall prevalence of infection was 22/213 (10.3%). The infection rate among subjects
who drink rainwater collected from roofs in tanks was higher than the rate in
subjects who drink desalinated water pumped from wells; similarly, the infection rate
among subjects who practice open defecation was significantly higher than that of
subjects with latrines. Out of the 22 samples positive for morphologically
indistinguishableEntamoeba species, the differentiation by PCR
was successful for 21. The species distribution was as follows: 57.1% to E.
dispar, 23.8% to E. histolytica, 14.3% toE.
histolytica and E. dispar, and 4.8% E.
dispar and E. hartmanni. These data suggest a high
prevalence of asymptomatic infection by the group of morphologically
indistinguishable Entamoeba
histolytica/dispar/moshkovskiicomplex
and E. hartmanni species. In this context of water scarcity, the
sanitary and socioenvironmental characteristics of the region appear to favour
transmission. 相似文献
544.
Cristina A. Taulescu Marian Taulescu Maria Suciu Liviu C. Bolunduț Petru Pășcuța Corina Toma Andrada Urda-Cîmpean Alexandra Dreanca Marin Șenilă Oana Cadar Răzvan Ștefan 《Biotechnology journal》2021,16(9):2100031
Wound healing is a highly dynamic process and innovative therapeutic approaches are currently developed to address challenges of providing optimal wound care. In this study, phosphate-based glasses in the (CuO)x·(KPO3)79.5-x·(ZnO)20·(Ag2O)0.5 system (CuKPO3ZnAg), with different CuO/ KPO3 ratios were prepared by melt-quenching technique. Constant Cu concentrations were released from the samples during immersion in Simulated Body Fluid (SBF), while Zn concentrations were slightly decreased over time. Glass surface phosphatation leading to formation of Zn crystalline salts was revealed through spectroscopic techniques. This finding was supported by SEM images that illustrated new compound formation. Subsequent cytotoxicity evaluation on HaCaT Keratinocytes using the indirect MTT cell viability assay revealed a CuO concentration-dependent cytotoxicity profile and excellent biocompatibility at low CuO concentrations, in all CuKPO3ZnAg glasses. Furthermore, the (CuO)5·(KPO3)74.5·(ZnO)20·(Ag2O)0.5 sample (5CuKPO3ZnAg), demonstrated superior antibacterial potency against S. aureus (ATCC 25923) strain compared to amoxicillin and ciprofloxacin. In vivo full-thickness wound healing evaluation showed a significantly higher regenerative effect of the 5CuKPO3ZnAg sample, in terms of angiogenesis, collagen synthesis and re-epithelialization compared to non-treated wounds. These findings advance our understanding of the therapeutic perspectives of phosphate-based glasses, showing promising potential for wound-healing applications. 相似文献
545.
Z. Borošková K. Reiterová P. Dubinský O. Tomašovičová B. Machnicka 《Folia microbiologica》1998,43(5):475-476
A high infective dose ofToxocara canis eggs (2 500 eggs per mouse) induced a partial immunosuppression in mice, manifested by inhibition of the proliferative response
of splenic T and B cells to polyclonal activators. A glucan immunomodulator given to infected animals at the beginning of
the experiment showed a marked stimulative and restorative effect on the parasite-suppressed lymphoproliferative response.
The ability ofT. canis to migrate in the host was reduced in glucan-treated animals by 27%. 相似文献