Effects of physical training on length of the sarcommers and muscle-tendon interface in the cervical region in experimental model of menopause

• Grant number: 17/21764-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2018
• End date: December 31, 2018
• Field of knowledge: Biological Sciences - Morphology - Anatomy
• Principal Investigator: Adriano Polican Ciena
• Grantee: Carolina dos Santos Jacob
• Host Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil

Abstract

The process of aging promote several changes to the human organism through sarcopenia, resulting from the physical inactivity associated to menopause, triggers many morphological changes in the area of muscle-tendon interaction denominated myotendinous junction (MTJ). Physical exercise attenuate the effects of muscle atrophy and lead to benefits in the region of the myotendinous junction and bring a new description of the lengths of sarcomeres. The aim of the present study will be describe the development of structures, ultrastructure and morphometric of sarcomeres and myotendinous junction of sternomastoid of Wistar aged rats, submitted to the experimental model of menopause and swimming training. There, will be used 40 rats with 1 year and 2 months of age randomly divided into four groups (n=10): Sedentary Group (S); Trained Group (T); Menopause Group (M) and Trained Menopause Group (TM) from the Animal Facility - Campus de Botucatu-SP. The training protocol will consist of 5 weekly sessions of 60 minutes for a period of 8 weeks, totalizing 40 sessions and 5% overload of the animals body mass. With the results obtained the morphological images will be analyzed qualitatively and quantitatively through light microscopy (n=5), revealing their morphometric characteristics by Axiovision Rel. 4.6 (Carl Zeiss) software and transmission electron microscopy (n=5), which will show the ultrastructural characteristics. Measurement of the lengths and thicknesses of sarcoplasmic invaginations and evaginations, as well as the lengths of sarcomeres will be mensurated using ImageJ software. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

JACOB, CAROLINA DOS SANTOS; ROCHA, LARA CAETANO; PIMENTEL NETO, JURANDYR; WATANABE, II-SEI; CIENA, ADRIANO POLICAN. Effects of physical training on sarcomere lengths and muscle-tendon interface of the cervical region in an experimental model of menopause. EUROPEAN JOURNAL OF HISTOCHEMISTRY, v. 63, n. 3, p. 131-135, 2019. (17/12525-1, 17/21764-0)