Journal of cardiology. Supplement最新文献_第5页

Proceedings of the 38th scientific session, Japanese College of Cardiology. Hiroshima, October 4-6, 1990. Abstracts. 日本心脏病学会第38届科学会议论文集。广岛，1990年10月4日至6日。摘要。

Journal of cardiology. Supplement Pub Date : 1991-01-01

引用次数: 0

[Collagen remodeling of a mitral periannular cardiac muscle lesion in experimental mitral regurgitation rabbits induced by vagus stimulation]. [迷走神经刺激诱导实验性二尖瓣返流兔二尖瓣周围心肌病变的胶原重塑]。

Journal of cardiology. Supplement Pub Date : 1991-01-01

S Naito, K Imataka, Y Seko, J Fujii

{"title":"[Collagen remodeling of a mitral periannular cardiac muscle lesion in experimental mitral regurgitation rabbits induced by vagus stimulation].","authors":"S Naito, K Imataka, Y Seko, J Fujii","doi":"","DOIUrl":"","url":null,"abstract":"A peculiar mitral periannular cardiac muscle lesion was developed in experimental mitral regurgitation rabbits induced by vagus stimulation. In this model, a pansystolic murmur was heard during one week after vagus stimulation, and it disappeared thereafter. We investigated the periannular cardiac muscle lesion one week (MR-1 group, N = 30) and four weeks (MR-4 group, N = 15) after vagus stimulation using pathohistological, immunohistochemical and biochemical techniques, and found that the lesion had regressed in four weeks. Non-treated rabbits (C-1 group and C-4 group) were used as controls. The periannular cardiac muscle lesion in MR-1 group was characterized by swelling and increased stiffness which corresponded to swelling and degeneration of the myocardial cells and interstitial fibrosis on microscopic observation. On the other hand, in MR-4 group, the swelling and degeneration of the myocardial cells restored and an increase of interstitial collagen was regressed. The hydroxyproline content of the periannular cardiac muscle lesion in MR-1 group was significantly abundant compared with that in C-1 group (10.5 +/- 1.6 mg/g. wet wt, vs 7.8 +/- 0.9, mean +/- SD, p less than 0.01). In MR-4 group, the hydroxyproline content was significantly decreased compared with that in MR-1 group (8.8 +/- 1.4 vs 10.5 +/- 1.6, p less than 0.05). Immunohistochemical study clearly indicated that the increased collagen in the periannular cardiac muscle lesion in MR-1 group was type III collagen, and that the increased type III collagen regressed in MR-4 group.(ABSTRACT TRUNCATED AT 250 WORDS)","PeriodicalId":77193,"journal":{"name":"Journal of cardiology. Supplement","volume":"25 ","pages":"53-9, discussion 60-1"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12992887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Four boys with multiple floppy valves involving all cardiac valves and hyperextensive joints]. [4名男孩有多个软瓣，包括所有心脏瓣膜和过度扩张关节]。

Journal of cardiology. Supplement Pub Date : 1991-01-01

K Suzuki, Y Murakami, K Mori, S Mimori

引用次数: 0

[Estimation of atherosclerotic lesions in the thoracic aorta by transesophageal echocardiography]. [经食管超声心动图评估胸主动脉动脉粥样硬化病变]。

Journal of cardiology. Supplement Pub Date : 1991-01-01

S Ono, M Matsuzaki, H Michishige, Y Wasaki, Y Tomochika, K Murata, I Tokisawa, Y Nishimura, F Okuda, R Kusukawa

{"title":"[Estimation of atherosclerotic lesions in the thoracic aorta by transesophageal echocardiography].","authors":"S Ono, M Matsuzaki, H Michishige, Y Wasaki, Y Tomochika, K Murata, I Tokisawa, Y Nishimura, F Okuda, R Kusukawa","doi":"","DOIUrl":"","url":null,"abstract":"The thoracic aorta is one of the portions frequently involved with atherosclerotic lesions. We estimated atherosclerotic lesions in the thoracic aorta in consecutive 137 patients (59 +/- 10 years old) using transesophageal echocardiography. The study population consisted of 60 with coronary artery disease (CAD), 36 with hypertension (HT), 28 with hypercholesterolemia (HC, total cholesterol greater than or equal to 230 mg/dl), eight with dissecting aneurysm, nine with true aneurysm and two with aortitis syndrome. We used a single transverse scan-plane probe with ultrasound frequency of 5 MHz. We could obtain satisfactory echograms of whole thoracic aorta except upper portion of the ascending aorta. We defined atherosclerotic lesions as an increased echo-density of the intima, protruded plaque, ulceration or aneurysm. Atherosclerotic lesions were observed in 71 of 137 patients (52%). High incidence of the atherosclerotic lesions was seen in patients with HT (72%), HC (57%) and CAD (57%), whereas incidence of atherosclerotic lesions was low (15%) in patients without HT, HC, CAD or aortic aneurysm. Atherosclerotic lesions were observed more frequently in patients aged greater than or equal to 60 years (69% vs 34%, p less than 0.001). In patients with HT or HC, atherosclerotic lesions were frequently observed even in patients younger than 60 years old (HT: 58%, HC: 53%). We concluded that HT, HC and aging were important risk factors for the atherosclerotic process in the thoracic aorta, and transesophageal echocardiography was a useful approach for the detailed estimation of atherosclerotic lesions in the thoracic aorta.","PeriodicalId":77193,"journal":{"name":"Journal of cardiology. Supplement","volume":"26 ","pages":"57-67"},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13090726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Usefulness of high resolution transesophageal echocardiography for diagnosis of ruptured chordae tendineae of the mitral valve: clinical and echocardiographic characteristics]. [高分辨率经食管超声心动图诊断二尖瓣腱索断裂的临床和超声心动图特征]。

Journal of cardiology. Supplement Pub Date : 1991-01-01

S Yoshida, O Iimura, K Hirata, M Fukuda

引用次数: 0

[Progression of idiopathic mitral valve prolapse estimated by echocardiography]. 超声心动图估计特发性二尖瓣脱垂的进展。

Journal of cardiology. Supplement Pub Date : 1990-01-01

Y Okano, S Nagata, F Ishikura, N Asaoka, S Beppu, F Ohmori, J Tamai, K Miyatake

{"title":"[Progression of idiopathic mitral valve prolapse estimated by echocardiography].","authors":"Y Okano, S Nagata, F Ishikura, N Asaoka, S Beppu, F Ohmori, J Tamai, K Miyatake","doi":"","DOIUrl":"","url":null,"abstract":"To evaluate the progression of idiopathic mitral valve prolapse (MVP), a long time follow-up study (mean 7.1 years) was performed using echocardiography in 27 cases (11 males, 16 females, mean age: 50.4 years). Morphological changes, the degree of prolapse of the mitral valve, left atrial dimension (LAD) and left ventricular end-diastolic dimension (LVDd) were estimated at the first and last examinations. The degree of prolapse was assessed by measuring the distance of the dislocation between the anterior and posterior leaflets at the area of coaptation (degree I:5 mm or less, degree II: 6 to 10 mm, degree III: 11 mm or greater). The results were as follows: 1. The degree of prolapse did not progress in all 27 cases. 2. LAD increased with an advance of age. A remarkable increase of LAD was recorded in cases older than 45 years with atrial fibrillation or prolapse of degree II and III or with ruptured chordae tendineae. 3. The mitral ring was enlarged over 5 mm in six of 15 cases with prolapse of degree II and III. 4. Mitral regurgitation evaluated by Doppler echocardiography in patients with posterior leaflet prolapse was more severe than that in patients with anterior leaflet prolapse in the last examination. 5. LVDd increased gradually. In the present study, LAD was increased in most cases of MVP and it seemed to depend on complications (atrial fibrillation and ruptured chordae tendineae) or severity of regurgitation rather than the degree of prolapse.","PeriodicalId":77193,"journal":{"name":"Journal of cardiology. Supplement","volume":"23 ","pages":"73-9; discussion 80-3"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13546760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Morphological observation of the mitral annulus fibrosus in patients with mitral valve prolapse]. [二尖瓣脱垂患者二尖瓣纤维环的形态学观察]。

Journal of cardiology. Supplement Pub Date : 1990-01-01

M Sugiura, S Ohkawa, C Watanabe, A Toku, T Imai, K Kuboki, H Shimada

引用次数: 0

[The Fifth Conference on Mitral Valve Prolapse. Tokushima, July 15-16, 1989]. 第五届二尖瓣脱垂会议。德岛，1989年7月15-16日]。

Journal of cardiology. Supplement Pub Date : 1990-01-01

引用次数: 0

Mitral valve prolapse vs mitral valve prolapse syndrome: what is the difference? 二尖瓣脱垂与二尖瓣脱垂综合征:有什么区别?

Journal of cardiology. Supplement Pub Date : 1990-01-01

P M Shah

引用次数: 0

[Peculiar mitral periannular cardiac muscle lesion in rabbits with experimentally-induced mitral regurgitation by vagus stimulation: investigation of a collagen increase and a myosin heavy chain isozyme change]. [迷走神经刺激实验诱导二尖瓣反流兔二尖瓣周围特殊心肌病变:胶原蛋白增加和肌球蛋白重链同工酶改变的研究]。

Journal of cardiology. Supplement Pub Date : 1990-01-01

S Naito, K Imataka, Y Seko, J Fujii

{"title":"[Peculiar mitral periannular cardiac muscle lesion in rabbits with experimentally-induced mitral regurgitation by vagus stimulation: investigation of a collagen increase and a myosin heavy chain isozyme change].","authors":"S Naito, K Imataka, Y Seko, J Fujii","doi":"","DOIUrl":"","url":null,"abstract":"A peculiar mitral periannular cardiac muscle lesion was developed in rabbits with experimentally-induced mitral regurgitation by vagus stimulation. We investigated the cardiac muscle lesion of mitral regurgitation rabbits (MR group, N = 30) using pathohistological, immunohistochemical and biochemical methods. Control group consisted of 21 non-treated rabbits. The periannular cardiac muscle lesion in the MR group was characterized by swelling and increased stiffness of the muscle which were observed as swelling and degeneration of the myocardial cells and interstitial fibrosis on the microscopic observation, and increase in the amount and dimension of collagen tendon, strands, and struts on the scanning electron microscopic study. Hydroxyproline content of the periannular cardiac muscle lesion in the MR group was significantly abundant compared with that in the control group (10.5 +/- 1.6 vs 7.8 +/- 0.9 mg/g.wet wt, mean +/- SD, p less than 0.01) and that of the cardiac muscle in the left ventricular free wall in the MR group (10.5 +/- 1.6 vs 7.1 +/- 0.9, p less than 0.01). Furthermore, the immunohistochemical study clearly indicated that the increased collagen in the periannular cardiac muscle lesion in the MR group was type III collagen. A significant myosin heavy chain isozyme change from V1 myosin to V3 myosin on pyrophosphate gel electrophoresis was observed at the periannular cardiac muscle lesion in the MR group compared with that in the control group (%V1: %V3, 4.2: 92.7 vs 15.4: 74.7, p less than 0.01) and that of the cardiac muscle in the left ventricular free wall in the MR group (4.2: 92.7 vs 14.1: 75.4, p less than 0.01). These results suggested that the mitral periannular cardiac muscle in experimental mitral regurgitation rabbits induced by vagus stimulation suffers a strong mechanical load compared with the cardiac muscle in the left ventricular free wall.","PeriodicalId":77193,"journal":{"name":"Journal of cardiology. Supplement","volume":"23 ","pages":"31-45; discussion 46"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13298419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0