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Differentiation,cell fusion,and nuclear fusion during ex vivo repair of epithelium by human adult stem cells from bone marrow stroma 总被引:61,自引:0,他引:61
Spees JL Olson SD Ylostalo J Lynch PJ Smith J Perry A Peister A Wang MY Prockop DJ 《Proceedings of the National Academy of Sciences of the United States of America》2003,100(5):2397-2402
To investigate stem cell differentiation in response to tissue injury, human mesenchymal stem cells (hMSCs) were cocultured with heat-shocked small airway epithelial cells. A subset of the hMSCs rapidly differentiated into epithelium-like cells, and they restored the epithelial monolayer. Immunocytochemistry and microarray analyses demonstrated that the cells expressed many genes characteristic of normal small airway epithelial cells. Some hMSCs differentiated directly after incorporation into the epithelial monolayer but other hMSCs fused with epithelial cells. Surprisingly, cell fusion was a frequent rather than rare event, in that up to 1% of the hMSCs added to the coculture system were recovered as binucleated cells expressing an epithelial surface epitope. Some of the fused cells also underwent nuclear fusion. 相似文献
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Wei-Chih Liao Phonthep Angsuwatcharakon Hiroyuki Isayama Vinay Dhir Benedict Devereaux Christopher J.L. Khor Ryan Ponnudurai Sundeep Lakhtakia Dong-Ki Lee Thawee Ratanachu-ek Ichiro Yasuda Frederick T. Dy Shiaw-Hooi Ho Dadang Makmun Huei-Lung Liang Peter V. Draganov Rungsun Rerknimitr Hsiu-Po Wang 《Gastrointestinal endoscopy》2017,85(2):295-304
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Purpose of Review
Phalloplasty may be performed in patients with acquired or congenital penile insufficiency or transgender individuals who desire phallic construction. Demand for neophallus creation and prosthesis placement has increased in recent years with growing coverage for gender affirming surgery among transgender patients. This report describes consideration of prosthetic implantation in neophallic reconstruction.Recent Findings
Prosthesis implantation in a neophallus requires special consideration regarding avoidance of critical structures, proximal prosthesis anchoring, and distal cushioning in patients without native corpora cavernosa. Neophallus prostheses are associated with increased risk of infection, extrusion, erosion, and device migration relative to standard prostheses, with a high revision rate.Summary
Implanters should have a thorough understanding of neophallic reconstructive technique prior to proceeding with device placement. Current literature on this subject consists predominantly of retrospective reviews and case reports with variable outcome measures. The creation of validated assessment tools will provide more meaningful data to inform provider counseling and patient expectations.45.
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Karl A. Lorenz MD MSHS Sydney M. Dy MD MPH Arash Naeim MD PhD Anne M. Walling MD Homayoon Sanati MD Patricia Smith MS Roberta Shanman MS Carol P. Roth RN MPH Steven M. Asch MD MPH 《Journal of pain and symptom management》2009,37(6):943-964
Patients and physicians often cite symptom control as one of their most important goals in cancer care. Despite this, a previous systematic review found few tools for evaluating the quality of supportive cancer management. We developed a comprehensive set of quality indicators for evaluating pain and nonpain symptom management as well as care planning needs in cancer patients. Based on the prevalence and quality-of-life data, clinician-researchers prioritized pain, psychosocial distress, dyspnea, nausea and vomiting, fatigue and anorexia, treatment-associated toxicities, and information and care planning for quality-indicator development. Using search terms and selection criteria, we identified English-language documents from Medline (1997–2007) and Internet-based searches. Based on this evidence, clinician-reviewers proposed process quality indicators. We then used the VA Health Services Research and Development (VA HSR & D) appropriateness methods to compile the ratings of a multidisciplinary, international expert panel of the validity and feasibility of each indicator. The panel judged 92 out of 133 (69%) proposed quality indicators valid and feasible (15 out of 23 pain, 5 out of 6 depression, 8 out of 11 dyspnea, 15 out of 19 nausea and vomiting, 13 out of 26 fatigue and anorexia, 23 out of 32 other treatment-associated toxicities, and 13 out of 16 information and care planning). Of the final indicators, 67 are potentially useful for inpatient and 81 for outpatient evaluation, and 26 address screening, 12 diagnostic evaluation, 20 management, and 21 follow-up. These quality indicators provide evidence-explicit tools for measuring processes critical to ensuring high-quality supportive cancer care. Research is needed to characterize adherence to recommended practices and to evaluate the use of these measures in quality improvement efforts. 相似文献
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Rafael Scaf de Molon Erica Dorigatti de Avila Joni Augusto Cirelli 《Journal of investigative and clinical dentistry》2013,4(4):211-218
Periodontitis is an infectious disease characterized by chronic inflammation of the periodontium, and it is mediated and modulated by the host immune system. In the presence of microorganisms or other antigens, immune cells (macrophages/monocytes, dendritic cells, lymphocytes, neutrophils), endothelial cells and fibroblasts secrete cytokines and trigger immune and inflammatory reactions. However, when synthesized at high levels, cytokines modify the pattern of cellular response, participating substantially in the development of chronic inflammatory pathologies, such as periodontal disease. Understanding the origin and progression of bone resorption is one of the primary goals of the field of periodontics, aiming to arrest the disease progression and to optimize future treatments. For this purpose, the development of experimental models is an important and necessary step before entering into clinical trials with new therapies. The purpose of this study is to characterize/evaluate the tissue changes induced by various models of experimental periodontitis through a literature review. 相似文献
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