Searchable abstracts of presentations at key conferences on calcified tissues
Bone Abstracts (2016) 5 P217 | DOI: 10.1530/boneabs.5.P217

ECTS2016 Poster Presentations Chondrocytes and cartilage (14 abstracts)

Effect of combined sex hormone replacement on bone/cartilage turnover in a murine model of osteoarthritis

KwangJun Oh


Konkuk University Medical Center, Seoul, Republic of Korea.


Background: Estrogens act on estrogen receptors distributed in articular cartilages, synovial membrane, and ligaments, which are thought to be related with degenerative changes. Meanwhile, progesterone is known to have a weak anabolic action on bone formation. This study evaluates the effects of estrogen and progesterone hormone on bone/cartilage turnover in ovariectomized (OVX) rats.

Methods: Thirty-five 7-month-old female Sprague–Dawley rats were randomly divided into five groups and then ovariectomized bilaterally except the sham control group. The first and the second group acting as controls did not receive hormonal therapy, the third group received estrogen, the fourth group received progesterone, and the fifth group received combination of both hormones 10 weeks after surgery. Evaluations were done using the serum levels of cartilage oligomeric matrix protein (COMP) for cartilage turnover, collagen type I C-telopeptide (CTX-1) and osteocalcin (OC) for bone turnover at 11, 15, 19 weeks after OVX and histology using the Osteoarthritis Research Society International (OARSI) osteoarthritis (OA) cartilage histopathology assessment system.

Results: Significantly less cartilage degradation (decreased levels of COMP) was found in the combined hormone treated group in comparison with OVX group. Similarly, both hormonal treatment resulted in increased bone formation and decreased bone resorption, i.e., a low overall bone turnover status (decrease in the serum OC and CTX-1 levels).

Conclusions: Combined estrogen and progesterone therapy was found to be convincing in terms of reducing the severity of OA in this experimental model.

Volume 5

43rd Annual European Calcified Tissue Society Congress

Rome, Italy
14 May 2016 - 17 May 2016

European Calcified Tissue Society 

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