期刊
JOURNAL OF SHOULDER AND ELBOW SURGERY
卷 22, 期 8, 页码 1019-1029出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.jse.2012.11.004
关键词
Animal model; vervet monkey; shoulder; rotator cuff; osteoarthritis; aging; degeneration
资金
- National Institute of Health [RR019963/OD010965]
- Department of Veterans Affairs [VA 247-P-0447]
- Wake Forest University Claude D. Pepper Older Americans Independence Center [P30-AG21332]
- Center for Biomolecular Imaging, Wake Forest School of Medicine
Background: Nonhuman primates have similar shoulder anatomy and physiology compared to humans, and may represent a previously underutilized model for shoulder research. This study sought to identify naturally occurring bony and muscular degeneration in the shoulder of nonhuman primates and to assess relationships between structural and functional aspects of the shoulder and measures of physical function of the animals. We hypothesized that age-related degenerative changes in the shoulders of nonhuman primates would resemble those observed in aging humans. Methods: Middle-aged (n = 5; ages 9.4-11.8 years) and elderly (n = 6; ages 19.8-26.4 years) female vervet monkeys were studied for changes in mobility and shoulder function, and radiographic and histologic signs of age-related degeneration. Results: Four out of 6 (4/6) elderly animals had degenerative changes of the glenoid compared to 0/5 of the middle-aged animals (P = .005). Elderly animals had glenoid retroversion, decreased joint space, walked slower, and spent less time climbing and hanging than middle-aged vervets (P < .05). Physical mobility and shoulder function correlated with glenoid version angle (P < .05). Supraspinatus muscles of elderly animals were less dense (P = .001), had decreased fiber cross-sectional area (P < .001), but similar amounts of nuclear material (P = .085). Degenerative rotator cuff tears were not observed in any of the eleven animals. Discussion and conclusion: The vervet monkey naturally undergoes age-related functional, radiographic and histological changes of the shoulder, and may qualify as an animal model for selected translational research of shoulder osteoarthritis. Level of evidence: Basic Science Study, in-vivo Animal Model. (C) 2013 Journal of Shoulder and Elbow Surgery Board of Trustees.
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