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排序方式: 共有217条查询结果,搜索用时 15 毫秒
1.
Takeshiro Fujii Yoshinori Watanabe Noritsugu Shiono Muneyasu Kawasaki Hiroki Yokomuro Tsukasa Ozawa Satoshi Hamada Hiroshi Masuhara Tetsuo Teramoto Masanori Hara Tomonori Katayanagi Yuki Sasaki Nobuya Koyama 《Annals of thoracic and cardiovascular surgery》2006,12(5):324-332
OBJECTIVE: To clarify the position of on-pump beating coronary artery bypass (CAB) and to define preoperative indicators of intentional conversion to the procedure in the era of advancement of off-pump CAB (OPCAB), we assessed on-pump beating CAB performed after the introduction of OPCAB. SUBJECTS AND METHODS: We assessed 130 patients who underwent single CAB [117 (90%) with OPCAB and 13 (10%) with on-pump beating CAB] between August 1999 (when OPCAB was selected as the first-line surgical procedure) and December 2004. RESULTS: No significant differences were seen between the groups in the number of coronary lesions or the prevalence of left main trunk (LMT) lesion. Reduced left cardiac function, cardiac dilatation, and mitral regurgitation (MR) were more remarkable in the on-pump beating CAB group. Preoperative ischemic condition was generally unstable in the both groups. A conversion to on-pump beating CAB occurred at anastomosis for the left anterior descending (LAD) branch in 61% and for the left circumflex (LCX) branch in 15%. LAD patients had more severe left cardiac dysfunction and cardiac dilatation than LCX patients. CONCLUSION: To perform safe and reliable CAB surgery, cardiovascular surgeons should define preoperative indicators of difficult OPCAB and convert OPCAB to on-pump beating CAB intentionally without hesitation when unstable hemodynamics is detected. 相似文献
2.
Hidekazu Shigematsu Noritsugu Irabu Toyonobu Ishii Hideo Shishido 《Pathology international》1979,29(4):607-613
Lupus nephritis in a sister and brother pair was histologically analyzed. The 12-year-old sister showed clinically progressive renal failure and her renal pathology disclosed segmental necrotizing and disorganizing glomeru-lonephritis. On the contrary, the 14-year-old brother exhibited nephrotic syndrome and his renal biopsy showed diffuse exudative and proliferative glomerulonephritis with segmental membraneous changes. Although the familial incidence of SLE suggests both genetic and environmental factors existing in the background of SLE of identical twins and siblings, the differences of clinical manifestation and histopathological findings imply that there might be little direct genetic and environmental control on determining the expression of the disease. ACTA PATH. JAP. 29: 607–613, 1979. 相似文献
3.
Dr. Kazuo Hase M.D. Hideki Ueno M.D. Noritsugu Kuranaga M.D. Katsuyuki Utsunomiya M.D. Sumio Kanabe M.D. Hidetaka Mochizuki M.D. 《Diseases of the colon and rectum》1998,41(9):1134-1140
PURPOSE: The aims of this study were to evaluate potential predictors of exfoliated free cancer cells in the peritoneal cavity and to assess intraoperative peritoneal lavage cytology as a prognostic indicator in patients with colorectal cancer. METHODS: From 1985 to 1987, intraoperative peritoneal lavage cytology was performed in 140 patients with colorectal cancer. Among them, 88 patients underwent curative resection and 52 patients had noncurative surgery. Cytology was examined twice,i.e., immediately after opening the peritoneal cavity (precytology) and just before closing the abdomen (postcytology). One hundred milliliters of saline was poured into the peritoneal cavity and it was retrieved by suction after irrigation. Cytologic examination was performed after staining with Papanicolaou, Giemsa, periodic acid-Schiff, and Alcian blue stains. RESULTS: Among the 140 patients examined, the incidence of positive cytology in the prelavage was 15 percent, and that in the postlavage was 9 percent, although it was 16 percent in either lavage. Among patients with curative resection, 10 percent had positive cytology. Seven characteristics were identified as features of tumors which are prone to exfoliate cells into the peritoneal cavity: 1) macroscopic peritoneal dissemination, 2) liver metastasis, 3) more than 20 ml of ascites, 4) ulcerated tumors without definite borders, 5) invasion of the serosal surface or beyond, 6) semiannular or annular shape, and 7) moderate or marked lymphatic invasion. In patients undergoing curative surgery, among these features, circumferential involvement was the only one correlated closely with positive cytology (P<0.02). Positive cytology was associated with a worse outcome. In patients who were resected curatively, the postcytology had a stronger influence on local recurrence than the precytology; the local recurrence rate in patients with positive postcytology was higher than in those with negative postcytology, regardless of the precytology. All patients with cancer cells in the peritoneal cavity at the end of surgery had recurrence. CONCLUSIONS: Seven characteristics were identified as risk factors for exfoliation of cancer cells into the peritoneal cavity in patients with colorectal cancer. These findings may be helpful for the choice of laparoscopic surgery in this era of increasing port-site metastases after laparoscopic procedure. The results of peritoneal lavage cytology at the end of surgery were correlated with the long-term postoperative outcome of colorectal cancer. Thus, meticulous follow-up and possibly adjuvant chemotherapy may be beneficial for patients with free cancer cells in lavage fluid, even after curative surgery. 相似文献
4.
Chang-Chun Chen Noritsugu Morishige Munetaka Masuda Wei Lin Werner Wieland Fed Thon Kanigula Mubagwa Marcel Borgers Willem Flameng 《Journal of molecular and cellular cardiology》1993,25(12)
The cardioprotective effects of R56865 were studied in isolated rabbit hearts, blood-perfused with a support rabbit system. The effect on ischemic injury was evaluated by comparing myocardial contracture and contents of ATP catabolites and of lactate during 60 min of normothermic ischemia in untreated hearts (group I) and in hearts treated with 0.63 mg/kg of R56865 starting 20 min before ischemia (group II; n = 5 in each group). R56865 delayed the onset, and decreased the extent of ischemic contracture, but had no effect on the myocardial content of ATP, of its catabolites or of lactate. The effect on reperfusion injury was studied by monitoring left ventricular function during 80-min reperfusion after the 60-min ischemia in three groups (n = 6 in each): an untreated group (group I) and two groups treated with R56865 given either before (group II) or after ischemia (group III). Ultrastructural changes and cellular calcium distribution after reperfusion were also studied. R56865 improved the recovery of function and prevented contracture during reperfusion. Left ventricular end-diastolic pressure was 13.2 ± 2.8 mmHg in group II and 31.3 ± 8.1 mmHg in group III vs 45.0 ± 2.6 mmHg in group I (P < 0.0001 for II vs I; P > 0.05 for III vs I). Left ventricular developed pressure, maximum dP/dt and minimum dP/dt recovered to 71.0 ± 5.4%, 98.9 ± 6.1%, 85.3 ± 4.8% of baseline values, respectively, in group II, to 64.5 ± 3.0% (P > 0.05), 76.8 ± 3.0%, 70.2 ± 4.0% in group III, vs 52.0 ± 6.5%, 58.9 ± 6.9% and 53.6 ± 5.8% in untreated hearts (P < 0.05 for II or III vs I). Coronary flow was 24.5 ± 2.2 ml/min and 19.8 ± 1.8 ml/min in groups II and III vs 14.8 ± 0.7 ml/min (P < 0.05) in the untreated group. On histology the myocardium in hearts treated either before after ischemia was well protected and calcium distribution was almost normal after reperfusion, while in untreated hearts, most of the myocardium displayed irreversible damage accompanied by massive intracellular calcium accumulation. We conclude that R56865 could attenuate Ca2+-overload, thereby reducing myocardial ischemia-reperfusion injury after an extended period of ischemia. 相似文献
5.
In the early (3-day) stage of development, long-lasting openings of the L-type Ca2+ channels (mode 2) occur in embryonic chick heart cells. Since mode-2 behavior is infrequently observed in adult heart cells of other species, in the present study, developmental change in behavior of the Ca2+ channel was examined in young (3-day) and old (17-day) embryonic chick heart cells. In the whole-cell voltage clamp, the L-type Ca2+ current carried by Ca2+ ions was smaller in amplitude and had a faster inactivation in 17-day cells than in 3-day cells. The peak current density was 8.1 +/- 0.2 microA/cm2 (mean +/- SEM, n = 5) and 5.1 +/- 0.3 microA/cm2 (n = 5) in 3-day and 17-day cells, respectively. When the charge carrier was Ba2+, the L-type Ca2+ channel current density was also smaller in 17-day cells (22.7 +/- 1.8 microA/cm2) than in 3-day cells (28.3 +/- 2.1 microA/cm2). In single-channel recordings, the mode-2 behavior was infrequent in 17-day cells compared with 3-day cells. High-open probability sweeps (with an open probability of greater than 0.25), reflecting mode-2 behavior, accounted for 20.2% and 3.7% in 3-day and 17-day cells, respectively. The ensemble-averaged currents in 17-day cells was 37% of that current in 3-day cells. In addition, decay of the averaged current appeared to be faster in 17-day cells than in 3-day cells. All data from the single-channel analysis agreed with the data from the whole-cell voltage clamp.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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Low‐grade intraductal carcinoma of the salivary gland with prominent oncocytic change: a newly described variant
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10.
Comparative analysis of Helicobacter DNAs and biliary pathology in patients with and without hepatobiliary cancer 总被引:8,自引:0,他引:8
Fukuda K Kuroki T Tajima Y Tsuneoka N Kitajima T Matsuzaki S Furui J Kanematsu T 《Carcinogenesis》2002,23(11):1927-1931
Several Helicobacter species have recently been isolated from the bile and hepatobiliary systems of murine species, and are well recognized as a pathogen of the hepatobiliary disorder. This study was planned to investigate whether Helicobacter species possess a causative potential for human hepatobiliary disease, especially for hepatobiliary carcinogenesis. Bile and hepatobiliary tissue samples from 19 patients with hepatobiliary cancer and 19 patients with benign biliary diseases were subjected to polymerase chain reaction analyses for the detection of Helicobacter DNAs. Using a proliferating cell nuclear antigen (PCNA) staining technique, we also investigated the biliary epithelial cell kinetics with special reference to the presence of Helicobacter DNAs in the hepatobiliary system. We found that Helicobacter DNAs were positive in 10 (52.6%) of the 19 patients with hepatobiliary cancer. The incidence was significantly higher than that (15.7%) in the benign cases (P = 0.03). The PCNA labeling index in the biliary epithelium in Helicobacter DNA-positive patients was statistically higher than that in Helicobacter DNA-negative ones, regardless of whether the patient was suffering from hepatobiliary cancer and/or biliary inflammation. A close correlation between the presence of Helicobacter DNAs and an elevation of the PCNA labeling index in the biliary epithelium was demonstrated by multiple regression analysis. Our findings suggest that Helicobacter species may play a role in the pathogenesis of hepatobiliary cancer through an acceleration of biliary cell kinetics. 相似文献