Right Ventricular MR Abnormalities in Myotonic Dystrophy and Relationship with Intracardiac Electrophysiologic Test Findings: Initial Results

Radiology ◽  
2002 ◽  
Vol 224 (1) ◽  
pp. 231-235 ◽  
Author(s):  
Olivier Vignaux ◽  
Arnaud Lazarus ◽  
Jean Varin ◽  
Joel Coste ◽  
Pierre Carlier ◽  
...  
Author(s):  
Avril V. Somlyo ◽  
H. Shuman ◽  
A.P. Somlyo

This is a preliminary report of electron probe analysis of rabbit portal-anterior mesenteric vein (PAMV) smooth muscle cryosectioned without fixation or cryoprotection. The instrumentation and method of electron probe quantitation used (1) and our initial results with cardiac (2) and skeletal (3) muscle have been presented elsewhere.In preparations depolarized with high K (K2SO4) solution, significant calcium peaks were detected over the sarcoplasmic reticulum (Fig 1 and 2) and the continuous perinuclear space. In some of the fibers there were also significant (up to 200 mM/kg dry wt) calcium peaks over the mitochondria. However, in smooth muscle that was not depolarized, high mitochondrial Ca was found in fibers that also contained elevated Na and low K (Fig 3). Therefore, the possibility that these Ca-loaded mitochondria are indicative of cell damage remains to be ruled out.


Author(s):  
Xia Mingyu ◽  
Ma Wengshu ◽  
Wu Xiangh ◽  
Chen Dong

This paper describes morphological and cytochemistry changes of endomyocardial biopsy in 94 patients. The samples of myoicardium were taken from 32 patients with dilated cardiomyopathy, and sdudied with light and electron microscop. The cytochemical studies in some of these patients were performed at histological and ultrastructure level. This paper also reported the result of myocardial biopsy in 33 patients with serious dysrythmia.The result of this controlled study indicates that morphological assessment in both cardiomyopathy and congenital or rheumatic heart diseases showed no special changes. In patients of dilated cardiomyopathy, the decreased activity of myosin ATPase was secondary to cardial failure. The change of succinate dehydrogenase (SDHase) was not significant with light microscopy. But ultrastructural localization of SDHase activity is valuable. Its activity was found to be localized in endomembrane and ridge of the mitochondria, the activity of this enzyme was decrease, normal, or increase. SDHase activity was more intense in cardial myocytes well-functioning, or ultrastructurally well preserved hearts.


2001 ◽  
Vol 120 (5) ◽  
pp. A226-A226 ◽  
Author(s):  
W LAMMERS ◽  
S DHANASEKARAN ◽  
J SLACK ◽  
B STEPHEN

2007 ◽  
Vol 177 (4S) ◽  
pp. 364-364 ◽  
Author(s):  
Surena F. Matin ◽  
Christopher G. Wood ◽  
Shi-Ming Tu ◽  
Nizar M. Tannir ◽  
Eric Jonasch

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