In these cats this study tried to identify would in the exonic and splice site regions of 1 of 8 genes associated with human familial HCM.
Three affected BSH, NWF, Siberians, Sphynx, 2 MC (without the known MC mutation), and 2 Domestic Shorthair cats (controls) were studied.
Exonic and splice site regions of the genes encoding the proteins cardiac troponin I, troponin T, MYBPC3, cardiac essential myosin light chain, cardiac regulatory myosin light chain, á tropomyosin, actin, and â–myosin heavy chain were sequenced.
Sequences were compared for nucleotide changes between affected cats, the published DNA sequences, and control cats.
Changes were considered to be causative for HCM if they involved a conserved amino acid and changed the amino acid to a different polarity, acid-base status, or structure.
Results: A causative mutation for HCM was not identified, although several single nucleotide polymorphisms were detected.
Conclusions and Clinical Importance: Mutations within these cardiac genes do not appear to be the only cause of HCM in these breeds. Evaluation of additional cardiac genes is warranted to identify additional molecular causes of this feline cardiac disease.
Source: K.M. Meurs, M.M. Norgard, M. Kuan, J. Haggstrom, M. Kittleson (2009): Analysis of 8 Sarcomeric Candidate Genes for Feline Hypertrophic Cardiomyopathy Mutations in Cats with Hypertrophic Cardiomyopathy. In: Journal of Veterinary Internal Medicine
Volume 23 Issue 4, Pages 840 - 843
Published Online: 26 Jun 2009
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