Polysaccharide storage myopathy in Cob Normand draft horses

被引:9
作者
Larcher, T. [1 ]
Herszberg, B. [2 ]
Molon-Noblot, S. [3 ]
Guigand, L. [1 ]
Chaffaux, S. [2 ]
Guerin, G. [2 ]
Cherel, Y. [1 ]
机构
[1] INRA, Ecole Natl Vet, UMR 703, F-44307 Nantes, France
[2] INRA, Lab Genet Biochem & Cyotogenet, F-78350 Jouy En Josas, France
[3] Ctr Rech Mirabel, MSD Chibret, F-63963 Clermont Ferrand, France
关键词
histopathology; horses; myopathy; polysaccharide storage;
D O I
10.1354/vp.45-2-154
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
Gluteus medius muscle was sampled from 53 Cob Normand horses for histologic evaluation. Twenty horses (38%) exhibited amylase-resistant material in myocytes consistent with polysaccharide storage myopathy. Diameter of affected type 11 fibers was increased (67.7 +/- 21.4 mu m) compared with normal ones (57.3 +/- 19.7 mu m). Two groups were distinguished by quantitative study. The first group (n = 14; 26%) was characterized by a low percentage of fibers (m = 0.98%) containing aggregates occurring singly or in perifascicular clusters without myopathic changes. The second group (n = 6; 11%) was characterized by a high percentage (in = 18.1%) of fibers containing aggregates scattered in biopsy with chronic myopathic changes. Rebiopsy of 4 horses showed an increase with time in the number of aggregate-containing fibers for horses of the first group only. In I necropsied horse, aggregates were observed in a wide range of muscles including smooth muscles. Ultrastructurally, granular material was found interspersed among arrays of filamentous material.
引用
收藏
页码:154 / 158
页数:5
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