背景:大量的研究发现雌激素与肌腱病具有一定的相关性,但长期以来雌激素在肌腱病中的实验研究成果与总结较少,不方便专科从业者及相关领域学者全面了解研究近况。目的:综述目前临床或临床前原始研究,以期对雌激素在肌腱病中的作用进行总...背景:大量的研究发现雌激素与肌腱病具有一定的相关性,但长期以来雌激素在肌腱病中的实验研究成果与总结较少,不方便专科从业者及相关领域学者全面了解研究近况。目的:综述目前临床或临床前原始研究,以期对雌激素在肌腱病中的作用进行总结,并对未来雌激素在肌腱病中的评估和管理进行一定的展望。方法:通过计算机对PubMed、Web of Science、中国知网、万方和维普数据库中的相关文献进行检索。检索时间为2008年1月至2023年9月,英文检索词为“Oestrogen,Estrogen,Estrogen receptor,Tendinopathy,Tendonopathy,Sinew,Tendon,Tendons,Myotenositis”;中文检索词为“雌激素,雌激素受体,肌腱病,肌腱,肌腱炎”。依据入选标准对检索结果进行筛选排除,最终纳入60篇文献进行综述分析。结果与结论:①体内研究表明,雌激素可促进肌腱的合成代谢。也有体外实验证明多种雌激素对肌腱能够起到促进肌腱细胞增殖、减轻炎症反应和细胞凋亡的作用,但实验大都局限于动物模型。②雌激素受体β更多的在肌腱损伤和修复过程起作用,而雌激素受体α暂未发现能够在肌腱损伤过程中产生主要影响。雌激素受体β的表达通过影响脂肪形成、Ⅰ型胶原蛋白的沉积和减少肌腱细胞凋亡来修复肌腱,而其过度表达则可能会促进炎症和血管生成,从而推进炎症进程,在肌腱损伤中发挥作用。③动物研究显示,雌激素缺乏可能会降低肌腱的胶原合成效率,肌腱弹性下降,抑制肌腱的合成代谢,不利于肌腱损伤修复,而正常水平的雌激素可能对肌腱中Ⅰ型胶原合成有刺激作用,促进肌腱细胞增殖和代谢。④目前雌激素在肌腱损伤中作用的分子机制尚未完全阐释,更多实验围绕肌腱胶原合成、细胞增殖凋亡,仅有少量文献研究了雌激素受体β缺陷调控干扰素调节因子5-趋化因子配体3轴、E2调控雌激素受体α和PI-3K-Akt信号通路以及高水平雌二醇降低游离循环胰岛素样生长因子水平3方面的分子机制。⑤包括内源性雌激素和植物雌激素在内的多种雌激素在正常水平时有益于肌腱病的修复,其主要通过雌激素受体β影响脂肪形成、Ⅰ型胶原蛋白的沉积和减少肌腱细胞凋亡发挥作用,这为未来不同亚型雌激素用于在体肌腱病的治疗以及关于雌激素膜性受体种类对肌腱病的影响打下了基础。展开更多
Objective The effect of dietary restriction, intense exercise and menstrual dysfunction on bone mineral density remains controversial. The aim of this study was to assess the skeletal health status and relationship be...Objective The effect of dietary restriction, intense exercise and menstrual dysfunction on bone mineral density remains controversial. The aim of this study was to assess the skeletal health status and relationship between bone mineral density and nutrient intake, menstrual status, estrogen level and other factos in Chinese adolescent dancers. Methods Sixty dancers and 77 healthy controls underwent measurements of bone density, body composition, and estrogen level. Nutrient intake, menstrual status and physical activity were assessed with questionnaires. The correlation between these factors were analyzed. Results The dancers under study had a significantly lean body mass index （18.3±1.4 kg/m^2 vs. 21.7±3.1 kg/m^2）, lower percentage of body fat （0.25±0.05 vs. 0.34±0.04） and later age at menarche （14.0±0.9 y vs. 13.0±1.3 y）, and the estrogen level, daily calorie and fat intake in them were also lower than in the controls. All the dancers undertook intensive physical activity every day and up to 69% of them suffered from irregular menarche. Yet they had relatively high BMD and BMC of the total body and legs than the controls after adjusting for BM1 and age. Site-specific BMD was positively correlated to BMI, body composition and training hours per week and negatively correlated to the age at menarche and menstrual frequency. Conclusions The relatively high BMD and BMC of the dancers at the total body and legs were probably caused by high levels of weight-bearing physical activity. To ameliorate disordered eating, especially low energy intake might be helpful to prevent the Triad and to improve the bone health in adolescent dancers.展开更多
文摘背景:大量的研究发现雌激素与肌腱病具有一定的相关性,但长期以来雌激素在肌腱病中的实验研究成果与总结较少,不方便专科从业者及相关领域学者全面了解研究近况。目的:综述目前临床或临床前原始研究,以期对雌激素在肌腱病中的作用进行总结,并对未来雌激素在肌腱病中的评估和管理进行一定的展望。方法:通过计算机对PubMed、Web of Science、中国知网、万方和维普数据库中的相关文献进行检索。检索时间为2008年1月至2023年9月,英文检索词为“Oestrogen,Estrogen,Estrogen receptor,Tendinopathy,Tendonopathy,Sinew,Tendon,Tendons,Myotenositis”;中文检索词为“雌激素,雌激素受体,肌腱病,肌腱,肌腱炎”。依据入选标准对检索结果进行筛选排除,最终纳入60篇文献进行综述分析。结果与结论:①体内研究表明,雌激素可促进肌腱的合成代谢。也有体外实验证明多种雌激素对肌腱能够起到促进肌腱细胞增殖、减轻炎症反应和细胞凋亡的作用,但实验大都局限于动物模型。②雌激素受体β更多的在肌腱损伤和修复过程起作用,而雌激素受体α暂未发现能够在肌腱损伤过程中产生主要影响。雌激素受体β的表达通过影响脂肪形成、Ⅰ型胶原蛋白的沉积和减少肌腱细胞凋亡来修复肌腱,而其过度表达则可能会促进炎症和血管生成,从而推进炎症进程,在肌腱损伤中发挥作用。③动物研究显示,雌激素缺乏可能会降低肌腱的胶原合成效率,肌腱弹性下降,抑制肌腱的合成代谢,不利于肌腱损伤修复,而正常水平的雌激素可能对肌腱中Ⅰ型胶原合成有刺激作用,促进肌腱细胞增殖和代谢。④目前雌激素在肌腱损伤中作用的分子机制尚未完全阐释,更多实验围绕肌腱胶原合成、细胞增殖凋亡,仅有少量文献研究了雌激素受体β缺陷调控干扰素调节因子5-趋化因子配体3轴、E2调控雌激素受体α和PI-3K-Akt信号通路以及高水平雌二醇降低游离循环胰岛素样生长因子水平3方面的分子机制。⑤包括内源性雌激素和植物雌激素在内的多种雌激素在正常水平时有益于肌腱病的修复,其主要通过雌激素受体β影响脂肪形成、Ⅰ型胶原蛋白的沉积和减少肌腱细胞凋亡发挥作用,这为未来不同亚型雌激素用于在体肌腱病的治疗以及关于雌激素膜性受体种类对肌腱病的影响打下了基础。
基金supported by key projects of the national science & technology pillar program during the eleventh five-year plan period (2008BAI58B02)danone institute China diet nutrition & comunication grant proposal 2006(DIC 2006-4)
文摘Objective The effect of dietary restriction, intense exercise and menstrual dysfunction on bone mineral density remains controversial. The aim of this study was to assess the skeletal health status and relationship between bone mineral density and nutrient intake, menstrual status, estrogen level and other factos in Chinese adolescent dancers. Methods Sixty dancers and 77 healthy controls underwent measurements of bone density, body composition, and estrogen level. Nutrient intake, menstrual status and physical activity were assessed with questionnaires. The correlation between these factors were analyzed. Results The dancers under study had a significantly lean body mass index （18.3±1.4 kg/m^2 vs. 21.7±3.1 kg/m^2）, lower percentage of body fat （0.25±0.05 vs. 0.34±0.04） and later age at menarche （14.0±0.9 y vs. 13.0±1.3 y）, and the estrogen level, daily calorie and fat intake in them were also lower than in the controls. All the dancers undertook intensive physical activity every day and up to 69% of them suffered from irregular menarche. Yet they had relatively high BMD and BMC of the total body and legs than the controls after adjusting for BM1 and age. Site-specific BMD was positively correlated to BMI, body composition and training hours per week and negatively correlated to the age at menarche and menstrual frequency. Conclusions The relatively high BMD and BMC of the dancers at the total body and legs were probably caused by high levels of weight-bearing physical activity. To ameliorate disordered eating, especially low energy intake might be helpful to prevent the Triad and to improve the bone health in adolescent dancers.
