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排序方式: 共有155条查询结果,搜索用时 109 毫秒
41.
Hiroshi Imano Satoru Motoyama Reijiro Saito Yoshihiro Minamiya Yoshihisa Katayose Manabu Okuyama Masakatsu Nakamura Koichi Ishiyama Ryuji Sashi Jun-ichi Ogawa 《The Japanese Journal of Thoracic and Cardiovascular Surgery》2004,52(10):445-450
Objective: The purpose of this study was to detect lymphatic drainage into the superior mediastinum and neck in thoracic esophageal
cancer patients using ferumoxides-enhanced magnetic resonance imaging (MRI), and to have this information assist in determining
the appropriate extent of lymphadenectomy. Methods: Nine male patients with T2–T3 mid- and lower-thoracic esophageal cancer with lymph node metastasis were examined. The day
before surgery, ferumoxides was endoscopically injected into the submucosal layer of the peritumoral lesion. Thereafter, lymph
nodes in the superior mediastinum and neck, which were shown to be ferumoxides-enhanced on MRI, were harvested and evaluated;
magnetic force from all harvested lymph nodes was measured ex vivo. Results: MRI of the superior mediastinum and neck revealed l(median) ferumoxides-enhanced lymph nodes in eight (89%) patients, and
there was laterality in the lymphatic mapping in both areas. Of the 15 lymph nodes into which drainage was detected by enhanced
MRI, 12 (80%) were magnetite-positive. In six patients (67%), magnetic resonance enhanced lymph nodes corresponded completely
with the ex vivo magnetite examination, and in 3 patients (33%) there was partial agreement In 3 (60%) of the 5 patients that showed paratracheal
and/or supraclavicular lymph node metastases, all of the affected nodes were detected by MRI; in one patient some of the affected
nodes were detected. Conclusion: Ferumoxides-enhanced MRI is useful for visualizing lymphatic drainage to the superior mediastinum and neck in thoracic esophageal
cancer. It is an adequate procedure to form an estimate on the appropriate extent of lymphadenectomy.
Read at the Fifty-sixth Annual Meeting of the Japanese Association for Thoracic Surgery, Symposium, Tokyo, November 19–21,
2003. 相似文献
42.
Raj K Dorisetty Sashi G Kiran Malathi R Umrani Sesikeran Boindala Ramesh R Bhonde Vijayalakshmi Venkatesan 《World journal of gastroenterology : WJG》2008,14(46):7112-7116
AIM: To localize nestin positive cells (NPC) in pancreatic tissue of mice of different ages. METHODS: Paraffin sections of 6-8 um of fixed pancreatic samples were mounted on poly-L-lysine coated slides and used for Immunolocalization using appropriate primary antibodies (Nestin, Insulin, Glucagon), followed by addition of a fluorescently labeled secondary antibody. The antigen-antibody localization was captured using a confocal microscope (Leica SP 5 series). RESULTS: In 3-6 d pups, the NPC were localized towards the periphery of the endocrine portion, as evident from immunolocalization of insulin and glucagon, while NPC were absent in the acinar portion. At 2 wk, NPC were localized in both the exocrine and endocrine portions. Interestingly, in 4-wk-old mice NPC were seen only in the endocrine portion, towards the periphery, and were colocalised with the glucagon positive cells. In the pancreas of 8- wk-old mice, the NPC were predominantly localized in the central region of the islet clusters, where immunostaining for insulin was at a maximum. CONCLUSION: We report for the first time the immunolocalization of NPC in the pancreas of mice of different ages (3 d to 8 wk) with reference to insulin and glucagon positive cells. The heterogeneous localization of the NPC observed may be of functional and developmental significance and suggest(s) that mice pancreatic tissue can be a potential source of progenitor cells. NPC from the pancreas can be isolated, proliferated and programmed to differentiate into insulin secreting cells under the appropriate microenvironment. 相似文献
43.
44.
Sashi Nadanaciva Autumn Bernal Robert Aggeler Roderick Capaldi Yvonne Will 《Toxicology in vitro》2007,21(5):902-911
Mitochondrial dysfunction has been shown to be a pharmacotoxicological response to a variety of currently-marketed drugs. In order to reduce attrition due to mitochondrial toxicity, high throughput-applicable screens are needed for early stage drug discovery. We describe, here, a set of immunocapture based assays to identify compounds that directly inhibit four of the oxidative phosphorylation (OXPHOS) complexes: I, II, IV, and V. Intra- and inter-assay variation were determined and specificity tested by using classical mitochondrial inhibitors. Twenty drugs, some with known mitochondrial toxicity and others with no known mitochondrial liability, were studied. Direct inhibition of one or more of the OXPHOS complexes was identified for many of the drugs. Novel information was obtained for several drugs including ones with previously unknown effects on oxidative phosphorylation. A major advantage of the immunocapture approach is that it can be used throughout drug screening from early compound evaluation to clinical trials. 相似文献
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47.
Is carotid angioplasty and stenting more cost effective than carotid endarterectomy? 总被引:7,自引:0,他引:7
Kilaru S Korn P Kasirajan K Lee TY Beavers FP Lyon RT Bush HL Kent KC 《Journal of vascular surgery》2003,37(2):331-339
OBJECTIVE: Carotid angioplasty and stenting (CAS) has been advocated as a minimally invasive and inexpensive alternative to carotid endarterectomy (CEA). However, a precise comparative analysis of the immediate and long-term costs associated with these two procedures has not been performed. To accomplish this, a Markov decision analysis model was created to evaluate the relative cost effectiveness of these two interventions. METHODS: Procedural morbidity/mortality rate for CEA and costs (not charges) were derived from a retrospective review of consecutive patients treated at New York Presbyterian Hospital/Cornell (n = 447). Data for CAS were obtained from the literature. We incorporated into this model both the immediate procedural costs and the long-term cost of morbidities, such as stroke (major stroke in the first year = $52,019; in subsequent years = $27,336/y; minor stroke = $9419). We determined long-term survival rate in quality-adjusted life years and lifetime costs for a hypothetic cohort of 70-year-old patients undergoing either CEA or CAS. Our measure of outcome was the cost-effectiveness ratio. RESULTS: The immediate procedural costs of CEA and CAS were $7871 and $10,133 respectively. We assumed major plus minor stroke rates for CEA and CAS of 0.9% and 5%, respectively. We assumed a 30-day mortality rate of 0% for CEA and 1.2% for CAS. In our base case analysis, CEA was cost saving (lifetime savings = $7017/patient; increase in quality-adjusted life years saved = 0.16). Sensitivity analysis revealed major stroke and death rates as the major contributors to this differential in cost effectiveness. Procedural costs were less important, and minor stroke rates were least important. CAS became cost effective only if its major stroke and mortality rates were made equivalent to those of CEA. CONCLUSION: CEA is cost saving compared with CAS. This is related to the higher rate of stroke with CAS and the high cost of stents and protection devices. To be economically competitive, the mortality and major stroke rates of CAS must be at least equivalent if not less than those of CEA. 相似文献
48.
M. Neeraja V. lakshmi V. D. Teja Vanjari Lavanya E. N. Priyanka K. Subhada M. M. Parida P. K. Dash Sashi Sharma P. V. L. Rao Gopal Reddy 《Archives of virology》2014,159(7):1567-1573
Dengue is the most rapidly spreading mosquito-borne viral disease in the world, and as a larger proportion of the population is being affected, more unusual manifestations are being reported. Very few studies have documented unusual manifestations of dengue in South India. This prospective study was undertaken from July 2011 to June 2013 to document rare manifestations of dengue fever in 175 hospitalized patients. The clinical diagnosis was confirmed by the detection of NS1Ag, dengue IgM, or IgG by ELISA and/or a RT-PCR and CDC real-time PCR for dengue virus (DENV) RNA. The daily profiles of the hematological and biochemical investigations were followed and recorded. Unusual and rare manifestations of dengue were documented for 115 patients (66 %). Hepatitis was observed in 70 % of the cases. Pleural effusion was seen in 11 %, acute renal failure in 10 %, neurological complications such as encephalitis in 7.4 %, myocarditis in 9 %, and bleeding gastric ulcers in 3.4 % of the cases. DENV serotype 2 was more prevalent in patients with unusual manifestations of dengue in our study. The WHO classification system does not include unusual and rare manifestations; hence, it is essential to be aware of these manifestations and closely monitor them for better clinical management and outcome of patients. 相似文献
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50.
Sashi S. Kommu Peter Rimington Christopher Anderson Abhay Rané 《Journal of robotic surgery》2007,1(2):133-137
Although the advantages of laparoscopic surgery are well documented, one disadvantage is that, for optimum performance, an
experienced camera driver is required who can provide the necessary views for the operating surgeon. In this paper we describe
our experience with urological laparoscopic techniques using the novel EndoAssist robotic camera holder and review the current
status of alternative devices. A total of 51 urological procedures (25 using the EndoAssist device and 26 using a conventional
human camera driver) conducted by three experienced surgeons were studied prospectively, including nephrectomy (simple and
radical), pyeloplasty, radical prostatectomy, and radical cystoprostatectomy. The surgeon noted the extent of body comfort
and muscle fatigue in each case. Other aspects documented were ease of scope movement, i.e. usability, need to clean the telescope,
time of set-up, surgical performance, and whether it was necessary to change the position of the arm during the surgery. All
three surgeons involved in the evaluation felt comfortable throughout all procedures, with no loss of autonomy. It was, however,
obvious that the large arc generated whilst doing a nephrectomy led to more episodes of lens cleaning, and the arm had to
be relocated on some occasions. Clearer benefits were seen while performing pelvic surgery or pyeloplasty, perhaps because
the arc of movement was smaller. The EndoAssist is an effective, easy to use device for robotic camera driving which reduces
the constraint of having to have an experienced camera driver for optimum visualisation during laparoscopic urological procedures. 相似文献