Exp Clin Endocrinol Diabetes 2020; 128(08): 540-547
DOI: 10.1055/a-0754-1956
Article

Doxercalciferol Alleviates Bone Deteriorations and Cartilage Degeneration in Aging Mice

Jian Li
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Nan Li
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Shuangtong Yan
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Minyan Liu
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Banruo Sun
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Yanhui Lu
1   Department of Geriatric Endocrinology, Chinese PLA General Hospital, National Clinical Center of Geriatric Medicine, Beijing, China
,
Yinghong Shao
Department of Outpatient, Chinese PLA General Hospital, Beijing, China
› Author Affiliations

Abstract

Background Age-related bone deteriorations are the common endocrine disorders in the elderly population, leading to an increased risk of fractures. Therefore, effective treatment strategies provide a way to prevent bone loss and improve the quality of life in the elderly population. The present study aimed to investigate the anti-osteoporotic effects of doxercalciferol (DOX) in aging mice.

Methods Bone metabolism-related markers were measured by ELISA assay. The expression of bone formation and resorption-related genes was performed by RT-qPCR analysis. Hematoxylin and eosin (H&E) and Safranin O staining were performed to analyze the trabecular bone and cartilage degeneration.

Results Aging resulted in urine ca2+ excretion, a decrease in bone ca2+ content and reduction of biomechanical strength in mice. We also found that the level of PTH was increased in aging mice, while DOX administration markedly down-regulated serum PTH in aging mice. H&E and Safranin O staining showed that DOX protected against aging-induced bone loss and cartilage regeneration in the tibia from aging mice. Furthermore, DOX treatment resulted in an increase in Runx2, osterix and Col1a1 mRNA expression and a decrease in Ctsk, MMP-9 and CAII mRNA expression in the tibia from aging mice.

Conclusion These findings indicated that DOX had a beneficial effect on age-related bone deteriorations in aging mice by promoting osteoblast activity and cartilage regeneration and inhibiting osteoclast-specific genes expression.



Publication History

Received: 03 July 2018
Received: 27 July 2018

Accepted: 03 October 2018

Article published online:
31 October 2018

© Georg Thieme Verlag KG
Stuttgart · New York

 
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