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排序方式: 共有1225条查询结果,搜索用时 453 毫秒
1.
Diego Dias da Silva Ana Helena da Rosa Paz Ciro Paz Portinho Elizabeth Obino Cirne Lima Lúcia Maria Kliemann Marcus Vinicius Martins Collares 《Acta cirúrgica brasileira / Sociedade Brasileira para Desenvolvimento Pesquisa em Cirurgia》2020,35(12)
Purpose:This study assessed the regeneration potential of mesenchymal stem cells (MSC) from adipose tissue associated with platelet-rich plasma (PRP) in bone regeneration.Methods:Thirty Wistar rats (Rattus norvegicus albinos) were divided into five groups (according to the grafting material and time to euthanasia): (1) autograft - 14 days (control), (2) autograft - 28 days (control), (3) MSC + PRP - 14 days, (4) MSC + PRP + papaverine - 14 days and (5) MSC + PRP + papaverine - 28 days. After euthanasia, the graft was removed and histological slides were prepared. They were assessed by a blinded pathologist using a previously published histological scale as parameter.Results:There was some degree of neoformed bone trabeculae (NBT) in 93.3% of the samples, as well as osteoblastic activity (OA). The autograft groups (14 and 28 days) had higher levels in the formation of bone trabeculae. Nonparametric data were analyzed using the Wilcoxon-Mann-Whitney test and proved not to be statistically significant at p < 0.05.Conclusions:Experimental parietal bone reconstruction, combining MSC, PRP and papaverine presented regeneration in all groups with no significant difference among them.Key words: Bone Regeneration, Platelet-Rich Plasma, Tissue Engineering, Rats 相似文献
2.
John Lennon Silva Cunha Amanda Almeida Leite Thamiris de Castro Abrantes Lorena Passoni Vervloet Thayn Melo de Lima Morais Gerson de Oliveira Paiva Neto Tatiana Nayara Librio Kimura Snia Maria Soares Ferreira Ricardo Luiz Cavalcanti de Albuquerque‐Júnior Aline Corrêa Abraho Mario Jos Romaach Bruno Augusto Benevenuto de Andrade Oslei Paes de Almeida Ciro Dantas Soares 《Journal of cutaneous pathology》2021,48(1):24-33
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The assessment, treatment, and prevention of pediatric pain pose a special challenge to surgeons and others involved in the care of children. The experience of pain is subjective, and infants and many children are unable to verbalize their level of discomfort. Therefore, it is the responsibility of physicians and nurses to be educated and trained to identify nonverbal signs of pain and discomfort, anticipate the experience of pain associated with specific procedures and diagnoses, and initiate the appropriate use of analgesics as well as nonmedicinal strategies to relieve this pain. 相似文献
5.
Giovanni Camussi Ciro Tetta Giuseppe Segoloni M. Chiara Deregibus Federico Bussolino 《Inflammation research》1981,11(6-7):550-553
Soluble and phagocytic stimuli released PAF-acether from PMN leucocytes, as determined by chromatography and bioassay by platelet aggregation. The same material caused aggregation of human and rabbit PMN leucocytesin vitro which was inhibited by ETYA and PGI2. PGI2 also inhibited PAF-acether release by PMN leucocytes and,in vivo, PGI2 abolished not only PAF-acether-induced, but also immune complex or C5a-induced thrombocytopenia and neutropenia in rabbits. These data suggest that PAF-acether may be involved in activation of both platelets and PMN leucocytesin vivo. 相似文献
6.
W T Shearer J Ritz M J Finegold I C Guerra H M Rosenblatt D E Lewis M S Pollack L H Taber C V Sumaya F C Grumet 《The New England journal of medicine》1985,312(18):1151-1159
A 12-year-old boy with severe combined immunodeficiency who had been kept in a gnotobiotic environment since birth received bone marrow from a histoincompatible sibling in an attempt to reconstitute immunologic function. To prevent graft versus host disease, the donor's marrow was treated in vitro with monoclonal antibody and complement to remove alloreactive T cells. Eighty days after transplantation, the patient had a systemic illness characterized by fever, thrombocytopenia, gastrointestinal pain, and bleeding; he died on the 124th post-transplantation day. Postmortem examination revealed multiple tumor-like B-cell proliferations, recipient in origin, in numerous organs. Epstein-Barr virus (EBV) was isolated from the patient's pharyngeal secretions; EBV nuclear antigen was found in spontaneously transformed peripheral-blood lymphocytes, inflammatory cells from peritoneal fluid, and bone marrow cells; and EBV genomes were discovered in all tumor tissues. The donor's serum showed evidence of past EBV infection. Analysis of cellular immunoglobulin and immunoglobulin gene DNA from the tumors indicated both monoclonal and oligoclonal B-cell proliferations. These findings provide evidence for the evolution of EBV-induced polyclonal activation of B cells to oligoclonal B-cell proliferation and finally to monoclonal B-cell lymphoma. 相似文献
7.
First evaluations of LPV/RTV (Kaletra) efficacy on HIV-positive patients treated with multiple drugs
Sabbatani S Legnani G Fulgaro C 《Le infezioni in medicina : rivista periodica di eziologia, epidemiologia, diagnostica, clinica e terapia delle patologie infettive》2003,11(1):18-24
At the current epidemic stage, characterized by the rise of antiretroviral drug resistance, it is necessary to administer to HIV-positive patients increasingly effective treatments. This is possible only by means of powerful drugs. In a retrospective study, the authors evaluate 78 patients: 76 pre-treated with multiple drugs and 2 na ves. The 78 patients received LPV/RTV, starting from the fourth 3-month period of 2000 until the first 3-month period of 2002. The average treatment duration was 6.5 ( 5.5) months; the median value 6 months. The efficacy of the LPV/RTV therapeutic regimen was evaluated by a cytofluorimetric count of CD4+ and determination of the HIV viral load. There were 14 drop-out patients (17.9%): 5 because of auto-suspension, 1 due to absence of clinical and virological efficacy, 5 due to side effects (3 hepatopathy, 1 allergy and 1 nausea); three patients were lost on follow-up. There were 64 (82.1%) patients on treatment. Forty patients responded (51.3%) and 13 (16.7%) had uncontrolled viraemia (over than 200 copies/ml). However, the treatment with LPV/RTV was not interrupted for these patients, because in the follow-up they showed an increase in CD4+ values. The authors conclude that the LPV/RTV combination confirms previous findings: it is a drug with a relatively low incidence of side effects, capable of powerful results even in the treatment of patients receiving multiple drugs and thus subjected to the risk of developing antiretroviral drug resistance. 相似文献
8.
Lopes Amanda Forster Machado Thais Costa Nascimento Viviane Gabriela Bertoli Ciro João Leone Claudio 《Maternal and child health journal》2022,26(6):1305-1311
Maternal and Child Health Journal - To study the relationship between cesarean Delivery (CD) and overweight in preschool children, considering the presence of birth aspects and demographic... 相似文献
9.
John Lennon Silva Cunha Carla Isabelly Rodrigues-Fernandes Ciro Dantas Soares Celeste Snchez-Romero Pablo Agustin Vargas Cleverson Luciano Trento Bruno Augusto Benevenuto de Andrade Sílvia Ferreira de Sousa Ricardo Luiz Cavalcanti de Albuquerque-Júnior 《Head and neck pathology》2021,15(1):303
Myofibroma (MF) is a benign mesenchymal myofibroblast-derived tumor, which occurs most frequently in children, and rarely affects the maxilla. We reported a case of an aggressive intraosseous lesion found in the maxilla of a 9-year-old female child. Intraorally, the swelling extended from tooth 12 to 16, causing displacement of teeth 13, 14, and 15. Computed tomography revealed a large osteolytic lesion causing thinning and cortical erosion. Microscopically, the lesion showed a proliferation of spindle-shaped cells, with elongated nuclei and eosinophilic cytoplasm, arranged in interlaced fascicles. The immunohistochemical analysis revealed cytoplasmic positivity for α-SMA and HHF-35, and negativity for desmin, laminin, S-100, β-catenin, and CD34. Ki-67 was positive in 8% of tumor cells. The diagnosis was MF. Herein, we describe an additional case of central MF arising in the maxilla, including clinical, imaging, microscopical, and immunohistochemical features, as well as a review of the literature. 相似文献
10.
Prognostic value of CD40 in adult soft tissue sarcomas. 总被引:4,自引:0,他引:4
Alessandro Ottaiano Anna De Chiara Francesco Perrone Gerardo Botti Flavio Fazioli Vincenzo De Rosa Nicola Mozzillo Vincenzo Ravo Brunello Morrica Ciro Gallo Carmela Pisano Maria Napolitano Paolo Antonio Ascierto Rosario Vincenzo Iaffaioli Gaetano Apice 《Clinical cancer research》2004,10(8):2824-2831
PURPOSE: The purpose is to evaluate the expression of CD40, a membrane protein predominantly expressed on B cells, dendritic cells, and macrophages, in a series of adult soft tissue sarcomas and to test its possible prognostic value. EXPERIMENTAL DESIGN: CD40 expression was studied by immunohistochemistry. Correlations with other baseline characteristics of patients and tumors were analyzed with chi(2) test. The prognostic value was studied with univariable and multivariable analysis adjusted by age, sex, tumor size, grade, location, and distant metastases. RESULTS: Eighty-two patients, between January 1994 and May 2001, were analyzed. Membrane or cytoplasmic staining for CD40 protein was absent in 30% of the tumors but present in <10% of cells in 22 (27%), in 10% to 50% in 23 (28%), and in >50% of cells in 12 (15%) tumors. There was no correlation between CD40 expression and age, sex, size, grade, and location of the primary tumor and distant metastases. With 61 patients (74.4%) progressed and 31 (37.8%) dead, CD40 expression was a significant prognostic factor for disease-free and overall survival at univariable and multivariable analysis. Patients with tumors expressing CD40 in >50% of cells had a dramatically unfavorable prognosis with median disease-free and overall survival of 7 and 17 months, respectively, and hazard ratios of relapse and death as compared with patients with CD40-negative tumors of 2.89 (95% confidence interval: 1.26-6.60) and 6.92 (95% confidence interval: 2.18-22.0), respectively. CONCLUSIONS: These data suggest that expression of CD40 protein in >50% of cells might indicate an unfavorable prognosis in adult soft tissue sarcomas. 相似文献