ArticleVeterinary research communications2024
Ovarian hyperplasia linked to a mutation in MAN1A2 in a cow with excessive follicular growth and functional oocytes.
Article in Veterinary research communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Here we report the case of a cow with two ovaries that each exhibited hyperplasia but that otherwise had normal gross morphology. Both ovaries had a large number of tertiary follicles on the ovarian surface. Oocytes from one ovary were studied in more detail. The transcriptome was largely similar to other oocytes. Oocytes could undergo cleavage at a rate consistent with other oocytes and result in blastocyst-stage embryo formation after in vitro maturation and fertilization. Review of the literature from cattle and other species did not reveal reports of a similar type of spontaneous ovarian abnormality. Whole genome sequencing revealed many single nucleotide polymorphisms with predicted large effects on protein structure that could potentially be causative for the phenotype. The variant considered most likely to cause the observed alteration in ovarian function was a mutation in the glycoprotein-modifying enzyme MAN1A2.
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