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Expression of myosin heavy chain isoforms mRNA transcripts in the temporalis muscle of common chimpanzees (Pan troglodytes)

Ciurana, Neus, Artells, Rosa, Muñoz, Carmen, Arias-Martorell, Júlia, Bello-Hellegouarch, Gaëlle, Casado, Aroa, Cuesta, Elisabeth, Pérez-Pérez, Alejandro, Pastor, Juan Francisco, Potau, Josep Maria and others. (2017) Expression of myosin heavy chain isoforms mRNA transcripts in the temporalis muscle of common chimpanzees (Pan troglodytes). Annals of Anatomy - Anatomischer Anzeiger, 214 . pp. 80-85. ISSN 0940-9602. (doi:10.1016/j.aanat.2017.08.001)

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Abstract

Purpose The common chimpanzee (Pan troglodytes) is the primate that is phylogenetically most closely related to humans (Homo sapiens). In order to shed light on the anatomy and function of the temporalis muscle in the chimpanzee, we have analyzed the expression patterns of the mRNA transcripts of the myosin heavy chain (MyHC) isoforms in different parts of the muscle. Basic procedures We dissected the superficial, deep and sphenomandibularis portions of the temporalis muscle in five adult P. troglodytes and quantified the expression of the mRNA transcripts of the MyHC isoforms in each portion using real-time quantitative polymerase chain reaction. Main findings We observed significant differences in the patterns of expression of the mRNA transcripts of the MyHC-IIM isoform between the sphenomandibularis portion and the anterior superficial temporalis (33.6% vs 47.0%; P = 0.032) and between the sphenomandibularis portion and the anterior deep temporalis (33.6% vs 43.0; P = 0.016). We also observed non-significant differences between the patterns of expression in the anterior and posterior superficial temporalis. Principal conclusions The differential expression patterns of the mRNA transcripts of the MyHC isoforms in the temporalis muscle in P. troglodytes may be related to the functional differences that have been observed in electromyographic studies in other species of primates. Our findings can be applicable to the fields of comparative anatomy, evolutionary anatomy, and anthropology.

Item Type: Article
DOI/Identification number: 10.1016/j.aanat.2017.08.001
Uncontrolled keywords: Temporalis musclePan troglodytesMyosin heavy chainRT-qPCRSphenomandibularis
Subjects: Q Science
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation
Depositing User: Matthias Werner
Date Deposited: 25 Sep 2017 11:34 UTC
Last Modified: 29 May 2019 19:34 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/63551 (The current URI for this page, for reference purposes)
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