Suppr超能文献

在非糖尿病的C57BL/6J小鼠中,卡格列净对骨骼的影响具有性别和年龄依赖性。

In nondiabetic C57BL/6J mice, canagliflozin affects the skeleton in a sex- and age-dependent manner.

作者信息

Chlebek Carolyn, McAndrews Casey, Costa Samantha N, DeMambro Victoria E, Yakar Shoshana, Rosen Clifford J

机构信息

Center for Molecular Medicine, MaineHealth Institute for Research, Scarborough, ME 04074, United States.

University of New England College of Osteopathic Medicine, Biddeford, ME 04005, United States.

出版信息

JBMR Plus. 2024 Oct 10;8(12):ziae128. doi: 10.1093/jbmrpl/ziae128. eCollection 2024 Dec.

Abstract

Canagliflozin (CANA) is a sodium glucose cotransporter-2 inhibitor that reduces blood glucose levels. Sodium glucose cotransporter-2 is primarily expressed in the kidney, but not in any bone cells, therefore effects on the skeleton are likely to be non-cell autonomous. Originally developed to treat type II diabetes, CANA use has expanded to treat cardiovascular and renovascular disease. Clinical trials examining CANA in diabetic patients have produced contradictory reports on fracture risk, but there are limited data of CANA in nondiabetic conditions. In nondiabetic preclinical models, short-term treatment with CANA negatively affected trabecular bone whereas long-term treatment reduced cortical bone mineralization in male but not female mice. To investigate the skeletal effects of an intermediate period of CANA treatment, we treated male and female C57BL/6 J mice with CANA (180 ppm) for 6 months. Age at treatment initiation was also evaluated, with cohorts starting CANA prior to skeletal maturity (3-months-old) or in adulthood (6-months-old). Longitudinal assessments of bone mineral density revealed early benefits of CANA treatment in female mice. At euthanasia, both trabecular and cortical bone morphology were improved by CANA treatment in males and females. Bone formation was reduced at the endosteal surface. CANA decreased osteoblast number in male mice and bone marrow adiposity in females. Overall, more skeletal benefits were recorded in CANA-treated females than males. Urinary calcium output increased with CANA treatment, but parathyroid hormone was not changed. Despite reduced fasting blood glucose, body composition and whole-body metabolism were minimally changed by CANA treatment. For all outcome measures, limited differences were recorded based on age at treatment initiation. This study demonstrated that in nondiabetic C57BL/6 J mice, an intermediate period of CANA treatment improved bone morphology, but reduced osteoblast and bone marrow adipocyte number as well as serum procollagen type 1 N-terminal pro-peptide in a sex-specific manner.

摘要

卡格列净(CANA)是一种可降低血糖水平的钠-葡萄糖协同转运蛋白2抑制剂。钠-葡萄糖协同转运蛋白2主要在肾脏表达,而不在任何骨细胞中表达,因此其对骨骼的影响可能是非细胞自主性的。CANA最初是开发用于治疗II型糖尿病的,目前其应用已扩展至治疗心血管和肾血管疾病。在糖尿病患者中进行的关于CANA的临床试验得出了关于骨折风险的相互矛盾的报告,但在非糖尿病情况下有关CANA的数据有限。在非糖尿病临床前模型中,短期给予CANA对雄性小鼠的小梁骨有负面影响,而长期治疗可降低雄性而非雌性小鼠的皮质骨矿化。为了研究CANA中期治疗对骨骼的影响,我们用CANA(180 ppm)对雄性和雌性C57BL/6 J小鼠进行了6个月的治疗。还评估了开始治疗时的年龄,一组在骨骼成熟前(3个月大)开始使用CANA,另一组在成年期(6个月大)开始使用。对骨密度的纵向评估显示,CANA治疗对雌性小鼠有早期益处。在安乐死时,CANA治疗改善了雄性和雌性小鼠的小梁骨和皮质骨形态。骨内膜表面的骨形成减少。CANA减少了雄性小鼠的成骨细胞数量和雌性小鼠的骨髓脂肪含量。总体而言,接受CANA治疗的雌性小鼠比雄性小鼠获得的骨骼益处更多。CANA治疗使尿钙排出量增加,但甲状旁腺激素未发生变化。尽管空腹血糖降低,但CANA治疗对身体成分和全身代谢的影响微乎其微。对于所有结局指标,根据开始治疗时的年龄记录到的差异有限。这项研究表明,在非糖尿病的C57BL/6 J小鼠中,CANA中期治疗改善了骨形态,但以性别特异性方式减少了成骨细胞和骨髓脂肪细胞数量以及血清I型前胶原N端前肽。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eedb/11532631/b49eb5eda1a0/ziae128ga1.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验