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Effects of dairy products on bone mineral density in healthy postmenopausal women: a systematic review and meta-analysis of randomized controlled trials

乳制品对健康绝经后妇女骨密度的影响: 随机对照试验的系统评价和荟萃分析

  • 影响因子:2.23
  • DOI:10.1007/s11657-020-0694-y
  • 作者列表:"Shi, Yingjie","Zhan, Yongle","Chen, Yunli","Jiang, Yu
  • 发表时间:2020-03-18
Abstract

Purpose To investigate the effects of dairy products on bone mineral density (BMD) in healthy postmenopausal women. Methods The EMBASE, Cochrane Library, Medline, and Web of Science databases were systematically searched for relevant studies. The pooled standardized mean difference (SMD) with its 95% confidence interval (CI) was used as the effect size. Subgroup analysis and Begg’s test were conducted. Results Six studies with a total of 618 participants were included in the meta-analysis. Milk was the main dairy product used in the trials. There was a significant association between dairy product consumption and BMD of the lumbar spine (SMD 0.21, 95% CI 0.05–0.37, P  = 0.009), femoral neck (SMD 0.36, 95% CI 0.19–0.53, P  < 0.001), total hip (SMD 0.37, 95% CI 0.20–0.55, P  < 0.001), and total body (SMD 0.58, 95% CI 0.39–0.77, P  < 0.001). Subgroup analysis suggested that there was a positive effect of dairy product consumption on the BMD of the total hip starting from 12 months and the femoral neck starting from 18 months. There was also a positive association with the BMD in the four sites in people living in low-calcium intake countries. Conclusion This meta-analysis provides evidence that dairy products can increase BMD in healthy postmenopausal women. Dairy product consumption should be considered an effective public health measure to prevent osteoporosis in postmenopausal women.

摘要

目的探讨乳制品对健康绝经后妇女骨密度 (BMD) 的影响。方法系统检索 EMBASE 、 Cochrane Library 、 Medline 和 Web of Science 数据库中的相关研究。以合并的标准化平均差 (SMD) 及其 95% 置信区间 (CI) 作为效应量。进行亚组分析和 Begg's 检验。结果 6 项研究共 618 名参与者被纳入 meta 分析。牛奶是试验中使用的主要乳制品。乳制品消费量与腰椎 (SMD 0.21,95% CI 0.05-0.37,P = 0.009) 、股骨颈 (SMD 0.36, 95% CI 0.19-0.53,P <0.001),全髋 (SMD 0.37,95% CI 0.20-0.55,P <0.001),全身 (SMD 0.58,95% CI 0.39-0.77,P <0.001)。亚组分析表明,乳制品消费对 12 个月开始的全髋关节和 18 个月开始的股骨颈的 BMD 有积极影响。在低钙摄入国家的人群中,四个部位的 BMD 也呈正相关。结论本荟萃分析提供了乳制品可增加健康绝经后妇女 BMD 的证据。乳制品消费应被视为预防绝经后妇女骨质疏松的有效公共卫生措施。

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影响因子:3.59
发表时间:2020-01-29
来源期刊:Food &amp; function
DOI:10.1039/c9fo01817d
作者列表:["Galán MG","Weisstaub A","Zuleta A","Drago SR"]

METHODS::Apparent calcium absorption, total bone mineral content and density, and mineral contents of the right femur were studied using a growing rat model. Twenty-four male Wistar rats were fed with diets based on extruded whole grain red (RSD) or white sorghum (WSD), and control diet (CD) up to 60 days. The animals fed with sorghum diets consumed less and gained less weight compared to those fed with CD, but the efficiency of all diets was similar. Calcium intake was lower in animals fed with sorghum diets, related to the lower total intake of these animals. Apparent calcium absorption in animals fed with RSD was lower than in those fed with CD (CD: 72.7%, RSD: 51.0%, WSD: 64.8%). No significant differences in bone mineral density of total body, spin, femur, distal femur, tibia and proximal tibia were observed among the groups. However, Ca and P contents in the right femur of the rats consuming RSD were lower, indicating a certain imbalance in the metabolism of these minerals.

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影响因子:1.50
发表时间:2020-01-24
来源期刊:Skeletal radiology
DOI:10.1007/s00256-020-03378-z
作者列表:["Schaffler-Schaden D","Kneidinger C","Schweighofer-Zwink G","Flamm M","Iglseder B","Pirich C"]

METHODS:OBJECTIVE:Controversy exists about the impact of bone mineral density (BMD) and fracture risk in newly diagnosed patients with breast cancer (BC). It is presumed that there are differences in BMD between women with BC and healthy controls. BMD is therefore considered as a potential marker to predict BC risk. This study was conducted to investigate the association of BMD, trabecular bone score (TBS) and fracture risk in younger postmenopausal women with hormone responsive BC. METHODS:Overall, 343 women were examined. Women with BC were matched to a control group of the general population. Forty-nine women and fifty-nine controls were included in the final analysis. All subjects underwent dual energy x-ray absorptiometry (DXA) of the lumbar spine, femoral neck, and the total hip to evaluate bone mineral density. The 10-year fracture risk for a major osteoporotic fracture was assessed using the FRAX-score and the TBS-adjusted FRAX-Score, respectively. RESULTS:Lumbar and femoral neck BMD were similar in BC patients and controls. No difference was found for TBS of the spine (1.38 ± 0.1 vs.1.36 ± 0.09) in the BC and the control group, respectively (p = 0.19). The 10- year probability for a major osteoporotic fracture (MoF) or femoral neck (FN) fracture was 6.1 (± 2.6%) and 0.9 (± 1.2%) in the BC group vs. 6.7 (± 3.5%) (p = 0.33) and 0.9 (± 1.1%) (p = 0.73) in the control group. CONCLUSION:Postmenopausal women younger than 60 years with breast cancer do not show any differences in baseline BMD, TBS, or TBS adjusted FRAX in comparison to controls.

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影响因子:5.97
发表时间:2020-01-27
DOI:10.1002/adhm.201901385
作者列表:["Gurumurthy B","Tucci MA","Fan LW","Benghuzzi HA","Pal P","Bidwell GL","Salazar Marocho SM","Cason Z","Gordy D","Janorkar AV"]

METHODS::The goals of this study are to evaluate the ability of the multicomponent collagen-elastin-like polypeptide (ELP)-Bioglass scaffolds to support osteogenesis of rat mesenchymal stem cells (rMSCs), demonstrate in vivo biocompatibility by subcutaneous implantation in Sprague-Dawley rats, monitor degradation noninvasively, and finally assess the scaffold's ability in healing critical-sized cranial bone defects. The collagen-ELP-Bioglass scaffold supports the in vitro osteogenic differentiation of rMSCs over a 3 week culture period. The cellular (rMSC-containing) or acellular scaffolds implanted in the subcutaneous pockets of rats do not cause any local or systemic toxic effects or tumors. The real-time monitoring of the fluorescently labeled scaffolds by IVIS reveals that the scaffolds remain at the site of implantation for up to three weeks, during which they degrade gradually. Micro-CT analysis shows that the bilateral cranial critical-sized defects created in rats lead to greater bone regeneration when filled with cellular scaffolds. Bone mineral density and bone microarchitectural parameters are comparable among different scaffold groups, but the histological analysis reveals increased formation of high-quality mature bone in the cellular group, while the acellular group has immature bone and organized connective tissue. These results suggest that the rMSC-seeded collagen-ELP-Bioglass composite scaffolds can aid in better bone healing process.

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