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Structural and ultrastructural characteristics of the bone-tendon junction of the triceps surae of Wistar rat adults and elderly: Study in light microscopy, scanning electron microscopy and transmission electron microscopy.

Grant number: 12/03280-1
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2012
Effective date (End): December 31, 2013
Field of knowledge:Biological Sciences - Morphology - Anatomy
Principal researcher:II-Sei Watanabe
Grantee:Diego Pulzatto Cury
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Achilles tendon of triceps surae is constituted for dense connective tissue, which function is transmitting force of contraction of muscle proteins to osseous tissue. Tendons are fundamental to skeletal movements and stability of the ligament and joint due bone insertion. This interface region between tendinous and osseous tissue is called bone-tendon junction. Although described the way of the bone-tendon junction, little know about its ultrastructural characteristics, possible morphological changes and functional due to aging. Aim this study is analyze structural characteristics of the bone-tendon junction of triceps surae of the adult and aged Wistar rats. Will be used 30 Wistar rats, arranged in two groups, group A adults 4 months-old (n=15), and group B elderly 2 years-old (n=15). Samples will be dissected and processed to analyzes of the light microscopy, using the staining Hematoxylin-Eosin, Azo-Carmine and Picrosirius and methods of the scanning electron microscopy and transmission electron microscopy to ultrastructural analysis. Results of this study can contribute to clarify possible morphological and functional changes, thus prevent injuries and orientate therapeutic approaches.

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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)
CURY, DIEGO PULZATTO; JOSE DIAS, FERNANDO; MIGLINO, MARIA ANGELICA; WATANABE, II-SEI. Structural and Ultrastructural Characteristics of Bone-Tendon Junction of the Calcaneal Tendon of Adult and Elderly Wistar Rats. PLoS One, v. 11, n. 4, . (12/03280-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CURY, Diego Pulzatto. Structural characteristics of the bone-tendon junction of triceps surae muscle of the adult and old Wistar rats: Light microscope, scanning electron microscope and transmission electron microscope study. 2013. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) São Paulo.

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