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排序方式: 共有660条查询结果,搜索用时 15 毫秒
1.
Treatment for inflammation of the tonsils has taken a variety of therapeutic forms over the years, ranging from the application of iodine and massage in the preantibiotic era to the tonsillectomy, which prevails today. The architecture of the cryptic tonsil, its clinical implications, and the rationale for a conservative, yet effective treatment modality focusing on the tonsillar crypts are addressed in this article. Also described are the procedures and results of a retrospective clinical study in which conventional tonsillectomy was compared with CO2 SwiftLase cryptolysis. Although our observations are not based on a prospective, controlled study, the information disseminated here may be useful to otolaryngologists who routinely perform tonsillectomy in their practice, using conventional surgical dissection methods or the CO2 laser. According to our experience with a population of 120 patients, cryptolysis offers some clear advantages, particularly when performed with the SwiftLase apparatus. The procedure can be performed safely in an ambulatory surgery or office setting under local anesthesia. The cooperative patient avoids the cost and risks of general anesthesia. Limited tissue destruction significantly reduces operative and postoperative complications, discomfort, and recovery time. To conclude, CO2 SwiftLase cryptolysis is a safe and cost-effective method of treating tonsil pathology without unnecessary sacrifice of the organ, and undue risks and expenses to the patient.11,12 相似文献
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Nelson Rhodes Theresa DSouza Christine D. Foster Yael Ziv David G. Kirsch Yosef Shiloh Michael B. Kastan Peter H. Reinhart Tona M. Gilmer 《Genes & development》1998,12(23):3686-3692
Similarities exist between the progressive cerebellar ataxia in ataxia telangiectasia (AT) patients and a number of neurodegenerative diseases in both mouse and man involving specific mutations in ion channels and/or ion channel activity. These relationships led us to investigate the possibility of defective ion channel activity in AT cells. We examined changes in the membrane potential of AT fibroblasts in response to extracellular cation addition and found that the ability of AT fibroblasts to depolarize in response to increasing concentrations of extracellular K+ is significantly reduced when compared with control fibroblasts. Electrophysiological measurements performed with a number of AT cell lines, as well as two matched sets of primary AT fibroblast cultures, reveal that outward rectifier K+ currents are largely absent in AT fibroblasts in comparison with control cells. These K+ current defects can be corrected in AT fibroblasts transfected with the full-length ATM cDNA. These data implicate, for the first time, a role for ATM in the regulation of K+ channel activity and membrane potential. 相似文献
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The complete sequence of the coding region of the ATM gene reveals similarity to cell cycle regulators in different species 总被引:30,自引:3,他引:30
Savitsky Kinneret; Sfez Sharon; Tagle Danilo A.; Ziv Yael; Sartiel Adam; Collins Francis S.; Shiloh Yosef; Rotman Gallt 《Human molecular genetics》1995,4(11):2025-2032
Ataxia-telangiectasia (A-T) is an autosomal recessive disorderinvolving cerebellar degeneration, immunodeficiency, radiationsensitivity, and cancer predisposition. A-T heterozygotes aremoderately cancer prone. The A-T gene, designated ATM, was recentlyidentified in our laboratory by positional cloning, and a partialcDNA clone was found to encode a polypeptide with a PI-3 kinasedomain. We report here the molecular cloning of a cDNA contigspanning the complete open reading frame of the ATM gene. Thepredicted protein of 3056 amino acids shows significant sequencesimilarities to several large proteins in yeast, Drosophilaand mammals, all of which share the PI-3 kinase domain. Manyof these proteins are involved in the detection of DNA damageand the control of cell cycle progression. Mutations in theirgenes confer a variety of phenotypes with features similar tothose observed in human A-T cells. The complete sequence ofthe ATM gene product provides useful clues to the function ofthis protein, and furthers understanding of the pleiotropicnature of the A-T mutations. 相似文献
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Michael Heming Xiaolin Li Saskia Räuber Anne K. Mausberg Anna-Lena Börsch Maike Hartlehnert Arpita Singhal I-Na Lu Michael Fleischer Fabian Szepanowski Oliver Witzke Thorsten Brenner Ulf Dittmer Nir Yosef Christoph Kleinschnitz Heinz Wiendl Mark Stettner Gerd Meyer zu Hörste 《Immunity》2021,54(1):164-175.e6
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The response of ataxia-telangiectasia homozygous and heterozygous skin fibroblasts to neocarzinostatin 总被引:4,自引:0,他引:4
Skin fibroblast strains from patients with ataxia-telangiectasia(A-T) were recently reported to be hypersensitive to the antitumorantibiotic neocarzinostatin (NCS). In this study, the distinctintermediate degree of NCS sensitivity previously shown withtwo strains of A-T heterozygous fibroblasts was extended andconfirmed in an additional eight strains. A sensitivity baselinefor A-T heterozygous cells has thus been established and mayserve for the laboratory diagnosis of A-T heterozygotes, a cancer-pronepopulation. The response of A-T homozygous and heterozygouscells to NCS was further characterized by two molecular parameters,DNA repair synthesis and inhibition of DNA replication. Thepattern of dose response with regard to DNA repair synthesis,as assayed by the benzoylated naphthoylated DEAE cellulose chromatographymethod, was similar in normal, A-T homozygous and A-T heterozygouscells, although certain variability between strains was observedwith regard to the amount of repair incorporation. This findingcorrelates with a similar observation made with the same cellstrains following -irradiation. Inhibition of DNA synthesisfollowing NCS treatment was reduced in A-T homozygous cells,as compared to normal cells, but the "Inhibition resistant"component of DNA synthesis typically observed following treatmentwith low doses of X-rays or bleomycin was not observed withNCS. A-T heterozygous cells showed somewhat less inhibitionof DNA synthesis than normal cells following NCS treatment,although this difference was small and was not significant enoughto serve as an additional laboratory diagnostic aid. It is concludedthat the reduced inhibition of DNA synthesis, rather than reducedextent of DNA repair synthesis, correlates with the cellularhypersensitivity of A-T homozygous cells. This hypersensitivityseems to be observed primarily, if not exclusively, with DNAbreaking agents. 相似文献
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Aviva Beit Yosef Talia Maeir Fatena Khalailh Yafit Gilboa 《Hong Kong Journal of Occupational Therapy》2022,35(1):62
AimsOur study explored the perceived feasibility of using a home-based telerehabilitation service for older adults with chronic health conditions in Israel.MethodThis mixed-methods study included two focus groups of registered occupational therapists (n = 10) working in rehabilitation wards in Israel. Participants completed an open-ended questionnaire and Likert scale items so that data could be gathered on their perspectives regarding using an in-home telerehabilitation service for older adults after discharge from rehabilitation units. Thematic analysis with an a priori coding approach was applied to the data.ResultsPerceived advantages included transfer to the natural environment and the overcoming of geographical distance. Caregiver support and patient motivation were recognized as enabling factors. Perceived barriers included lack of hands-on contact and the concern that safety could be impeded by technological challenges and the patients’ cognitive status.ConclusionsFindings from this study can potentially contribute to facilitating the implementation of a home-based telerehabilitation service as a practical alternative for elderly patients after discharge from rehabilitation units in Israel. 相似文献
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