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1.
维生素D的主要作用是维持骨健康,自20世纪70年代以来,大量研究发现,维生素D可作用于多种组织器官,与癌症、自身免疫性疾病、糖尿病、高血压、结核的发生密切相关。补充维生素D可增加骨密度,降低结肠癌、部分自身免疫性疾病及糖尿病等的风险。也有部分研究未发现维生素D与2型  相似文献   

2.
随着对维生素D研究的深入,发现它不仅有经典的对钙、磷和骨代谢的重要作用,而且对骨外作用——免疫系统、细胞增殖和分化以及与其他内分泌腺体之间都有紧密联系。近期揭示了维生素D缺少是一全球性问题,维生素D和健康、适宜维生素D摄入量和理想维生素D水平等,都是我们面临的重要课题。  相似文献   

3.
维生素D不仅对人体钙、磷代谢平衡重要,而且近些年研究发现VitD受体广泛存在于人体的多种组织细胞中,活性维生素D还具有重要生物学功能.VitD缺乏与多种慢性疾病发生相关,包括骨质疏松、骨折、跌倒风险增加;增加心血管风险,包括高血压、缺血性心脏病、心力衰竭;而且影响胰腺β细胞分泌及胰岛素抵抗,从而增加2型糖尿病风险.活性VitD调节人体固有免疫和获得性免疫,调控细胞生长,促进细胞分化,抑制细胞增殖及免疫平衡,从而影响免疫系统疾病和肿瘤发生、发展.应适量补充VitD对人体许多组织器官发挥最佳功能,有益于老年慢性疾病防治和健康.  相似文献   

4.
随着对维生素D研究的深入,发现它不仅有经典的对钙、磷和骨代谢的重要作用,而且对骨外作用--免疫系统、细胞增殖和分化以及与其他内分泌腺体之间都有紧密联系.近期揭示了维生素D缺少是一全球性问题,维生素D和健康、适宜维生素D摄入量和理想维生素D水平等,都是我们面临的重要课题.  相似文献   

5.
维生素D最重要的功能是维持人体钙离子代谢的平衡。随着研究的深入,维生素D在炎性反应、自身免疫性疾病、胰岛素分泌及胰岛素抵抗等方面的作用已经成为研究的热点。维生素D缺乏或不足与糖尿病发病相关。维生素D可通过抑制炎性反应、促进胰岛素释放、减轻胰岛素抵抗等机制参与糖尿病的发病。大量的临床研究发现补充足量的维生素D不仅可以减少1型糖尿病和2型糖尿病的发病,而且还可以改善糖代谢,控制糖尿病相关症状。因此,维生素D可能在预防和控制糖尿病中起重要作用。  相似文献   

6.
维生素D最重要的功能是维持人体钙离子代谢的平衡.随着研究的深入,维生素D在炎性反应、自身免疫性疾病、胰岛素分泌及胰岛素抵抗等方面的作用已经成为研究的热点.维生素D缺乏或不足与糖尿病发病相关.维生素D可通过抑制炎性反应、促进胰岛素释放、减轻胰岛素抵抗等机制参与糖尿病的发病.大量的临床研究发现补充足量的维生素D不仅可以减少...  相似文献   

7.
长期以来,人们对维生素D的认识主要集中在对钙磷骨代谢的调节。自1980年,人们在钙磷骨代谢相关细胞外,如甲状旁腺细胞、淋巴细胞、胸腺及前髓细胞等发现了维生素D受体后,对维生素D的认识进一步开阔,后期的研究结果显示维生素D除了调节钙磷骨代谢之外,还具有更广泛的生理功能,其作用主要包括:参与免疫调节;参与炎性反应;糖、脂代谢的调节等病理生理过程。近年来,维生素D对免疫系统的调节作用备受关注。本文就维生素D对免疫系统的调节作用作一综述。  相似文献   

8.
越来越多证据表明,维生素D与支气管哮喘(简称哮喘)发病有关,主要机制包括维生素D和环境危险因素等共同作用导致免疫系统的失衡.以及维生素D影响胚胎肺发育等.本文主要综述维生素D、维生素D受体和免疫系统之间的关系,以及维生素D如何通过免疫学机制影响哮喘发病方面的研究进展.深入研究维生素D、维生素D受体在哮喘发病中所起的作用及作用机制,有助于进一步阐明哮喘的发病机制.从而为哮喘的预防和治疗提供新的途径.  相似文献   

9.
维生素D、维生素D受体与支气管哮喘   总被引:1,自引:0,他引:1  
越来越多证据表明,维生素D与支气管哮喘(简称哮喘)发病有关,主要机制包括维生素D和环境危险因素等共同作用导致免疫系统的失衡,以及维生素D影响胚胎肺发育等。本文主要综述维生素D、维生素D受体和免疫系统之间的关系,以及维生素D如何通过免疫学机制影响哮喘发病方面的研究进展。深入研究维生素D、维生素D受体在哮喘发病中所起的作用及作用机制,有助于进一步阐明哮喘的发病机制,从而为哮喘的预防和治疗提供新的途径。  相似文献   

10.
11.
Vitamin D has been reported to have a variety of non-skeletal actions, including on glucose metabolism. There has been increasing evidence from animal and human studies, to suggest that vitamin D may be important in modifying risk of type 2 diabetes. Vitamin D is thought to have both direct (through activation of the vitamin D receptor) and indirect (via regulation of calcium homeostasis) effects on various mechanisms related to the pathophysiology of type 2 diabetes, including pancreatic beta-cell dysfunction, impaired insulin action, and systemic inflammation. The evidence from human studies comes primarily from cross-sectional and a few prospective observational studies showing an inverse association between vitamin D status and prevalence or incidence of type 2 diabetes. While there is paucity of trials that have specifically examined the role of vitamin D in prevention or treatment of type 2 diabetes, vitamin D therapy is emerging as a feasible and cost-effective potential intervention for type 2 diabetes.  相似文献   

12.

Aim

The prevalence of diabetes in the French West Indies is three times higher than in mainland France. We aimed to assess the associations between vitamin D deficiency, vitamin D receptor (VDR) gene polymorphisms and cardiovascular risk factors in Caribbean patients with type 2 diabetes (T2D).

Methods

In this cross-sectional study of 277 patients, 25-hydroxyvitamin D was measured by radioimmunoassay. FokI, BsmI, ApaI and TaqI single nucleotide polymorphisms (SNPs) of the VDR gene were genotyped. Analysis of covariance and logistic regression were performed.

Results

The study included 76 patients of Indian descent and 201 patients of African descent. The prevalence of vitamin D deficiency (< 20 ng/mL) was 42.6%. When patients were classified into groups with (G1) and without (G2) vitamin D deficiency, there were no significant differences in age, systolic blood pressure, low-density lipoprotein cholesterol and HbA1c, although body mass index was significantly higher in G1. Vitamin D deficiency was significantly associated with increased diastolic blood pressure and triglyceride levels, and reduced high-density lipoprotein cholesterol (P < 0.05). Prevalence of vitamin D deficiency was decreased in patients carrying the f allele of FokI (OR: 0.52; P = 0.02) and the aa genotype of ApaI (OR: 0.46; P = 0.05). BsmI and TaqI SNPs were not associated with vitamin D deficiency.

Conclusion

The rate of vitamin D deficiency was high in our T2D patients, and was associated with the VDR gene FokI and ApaI polymorphisms and cardiovascular risk profile. Measurements of vitamin D may help to detect T2D patients with cardiovascular risk, and VDR polymorphisms might explain why vitamin D deficiency is so frequently seen in some T2D patients.  相似文献   

13.
14.
目的 探讨2型糖尿病合并视网膜病变(DR)患者血清维生素D水平变化及意义,为DR的早期防治提供诊断依据.方法 选取2012年1月—2019年1月于该院内分泌科住院的2型糖尿病患者219例进行研究,分为T2DM不伴DR(NDR)组73例、T2DM伴非增殖期DR(BDR)组69例和T2DM伴增殖期DR(PDR)组77例.收...  相似文献   

15.

Introduction

Besides its role in calcium homeostasis, vitamin D (VD) has an important immuno-mudulation effect. However, its role in autoimmune diseases such as type 1 diabetes is under discussion. This study designed to investigate serum VD status in children and adolescents with and without diabetes.

Materials and methods

In a case-control study, 85 diabetic and 85 non-diabetic control (total 170) aged 1–15 yr. were enrolled. History of breast feeding and vitamin supplementation was obtained; growth indices and serum levels of Calcium, phosphorous, Alkaline-Phosphatase (ALP), Hemoglobin-A1c and VD were measured and analyzed.

Results

The mean values for VD in case and control groups were 12.80?±?10.59 and 15.85?±?9.92?nmol/L, respectively (p?=?0.057). Serum VD status in these two groups was sufficient in 5.88% and 9.41%, insufficient in 18% and 14%, and deficient in 75.29% and 76.74%, respectively. Compared to the controls, diabetics had more history of breast-feeding (62.35% vs. 42.35%; p?=?0.017) and higher serum ALP levels (772.34?±?309.89 vs. 657.99?±?395.11?U/L; p?=?0.032).

Conclusion

More frequency of breast-feeding, higher serum ALP and mildly lower serum level of VD in diabetics suggests a significant difference in VD status in diabetics compared to the healthy peers indicating a potential role of this deficiency in the disease process.  相似文献   

16.
陈伟伟  蔡栩栩 《国际呼吸杂志》2011,31(20):1561-1563
维生素D作为一种免疫调节剂,在肺部微环境的免疫中发挥重要作用.维生素D可以在肺组织中激活并与相应的受体结合而发挥免疫作用,本文将从维生素D的代谢及生理作用、活性维生素D在肺内的产生及免疫作用、维生素D与哮喘的关系等方面进行综述.  相似文献   

17.
维生素D与肺内免疫研究进展   总被引:1,自引:0,他引:1  
维生素D作为一种免疫调节剂,在肺部微环境的免疫中发挥重要作用。维生素D可以在肺组织中激活并与相应的受体结合而发挥免疫作用,本文将从维生素D的代谢及生理作用、活性维生素D在肺内的产生及免疫作用、维生素D与哮喘的关系等方面进行综述。  相似文献   

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