Key result
Goat latissimus dorsi muscle most closely matches human morphology and biochemistry versus pigs and dogs.
Why the study?
Cardiomyoplasty requires an animal model with muscle characteristics resembling humans for experimental studies, but the optimal large mammal model was unclear.
Which large mammal's latissimus dorsi muscle most closely resembles that of humans for use in cardiomyoplasty experimental models?
Which large mammal's latissimus dorsi muscle most closely resembles that of humans for use in cardiomyoplasty experimental models?
The goat latissimus dorsi muscle most closely resembles human muscle morphologically and biochemically, making it the preferred animal model for cardiomyoplasty research.
Goat may be preferred for cardiomyoplasty models; leaves open translation to human applications.
Cardiomyoplasty has the potential to become an alternative therapy for congestive heart failure patients and is presently in Phase III clinical trials. In experimental studies, it is necessary to use an animal with muscle characteristics that resemble those of humans. Therefore, the purpose of this study was to compare morphological and biochemical characteristics of the latissimus dorsi muscle (LDM) of three common large mammals with those of human. Of the three mammals studied, the goat had the most overall similarities to the human when comparing mitochondrial capacity, percent fiber types, fiber areas, myofibrillar (MF)-AT-Pase activity, and 72-kDa heat shock protein (HSP) content. The pig was dissimilar to the human in its fiber-type arrangement, glycolytic capacity, percent fiber type, MF-ATPase activity, and HSP-72 content. The dog differed from the human in that it had high-mitochondrial enzyme activity, a fiber-type profile consisting of all high-aerobic fibers, and fiber cross-sectional areas that were nearly half those of humans. These findings show that the LDM of the goat most resembles that of the human.
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Lanuzzo et al. (1996) studied Congestive heart failure. Latissimus dorsi muscle characteristics of goat, pig, and dog vs. Human latissimus dorsi muscle was evaluated on Morphological and biochemical characteristics. The latissimus dorsi muscle of the goat most closely resembles that of the human in morphological and biochemical characteristics compared to the pig and dog.
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