上海地区成人维生素D水平与性别、年龄、季节的关系

目的 了解上海地区成人维生素D水平状况,探讨不同性别、年龄、季节对维生素D水平的影响.方法 将21864例在上海市第六人民医院体检中心进行健康体检者作为研究对象进行回顾性研究,包括男性10566人,女性11298人.结果 21864例研究对象的25(OH)D水平为19.68(15.12,25.48)ng/mL.其中维生...     

兰州地区22161例人群维生素D水平与性别、年龄、季节、日照时数和平均气温关系的回顾性研究

目的 基于临床数据分析甘肃省兰州市人群血清总25羟维生素D [25(OH)D]水平,并探讨其影响因素。方法 收集2016年10月到2021年10月在兰州大学第一医院检验科进行检测的22 161例受试者的血清25(OH)D的检测结果和相关临床资料,其中男性11 023例,女性11 138例。同时,调取《中国统计年鉴》官网上发布的兰州市日照时数和平均气温的数据。回顾性分析血清25(OH)D水平以及不同性别、年龄、季节、日照时数和平均气温对血清25(OH)D水平的影响。结果 (1)22 161例受试者的血清25(OH)D平均含量为13.72 (9.58,19.04) ng/mL,女性25(OH)D水平均低于男性;维生素D正常、不足和缺乏的检出率分别为22.08%、37.39%和40.53%;(2)不同性别、年龄的各组人群相比,0～6岁组血清25(OH)D含量最高,为24.30 (17.85,32.20) ng/mL,女性高于男性,但不存在差异(P>0.05);其他各个年龄组25(OH)D含量均是女性低于男性(P<0.05);18～29岁组25(OH)D含量最低,为12.00 (8...     

云南省某医院骨科门诊患者血清维生素D水平检测与分析

目的 检测骨科门诊患者血清总25-羟基维生素D[25(OH)D]水平,分析不同性别和年龄段患者血清维生素D营养状态.方法 纳入2018年12月至2020年12月就诊于昆明市第一人民医院骨科门诊并采用化学发光法(免疫法)检查血清25(OH)D水平的2500例患者,记录患者的性别、年龄、血清25(OH)D值,以血清25(O...     

维生素D、维生素B12和同型半胱氨酸水平与绝经后女性骨密度的相关性研究

目的探索绝经后非骨质疏松症和骨质疏松症女性患者高半胱氨酸、维生素D、维生素B_(12)和骨密度(bone mineral density,BMD)之间的关系。方法选取2017年8～12月在我院就诊的138名女性作为研究对象,根据骨密度将绝经后女性分为骨质疏松组(n=58)和非骨质疏松组(n=80)。记录两组患者的体质量指数(body mass index,BMI)、年龄、腰围等一般资料,检测腰椎L_(1～4)前后位、左侧股骨近端的BMD,测定血清同型半胱氨酸、维生素B_(12)、维生素D、碱性磷酸酶、钙、磷水平。分析两组患者不同指标的差异以及高半胱氨酸、维生素D、维生素B_(12)和BMD之间的相关性。结果两组患者的年龄、BMI、腰围、同型半胱氨酸、维生素D、维生素B_(12)、腰椎L_(1～4)和左股骨颈骨密度比较差异有统计学意义(P均0.05);Rho相关性和回归分析表明,同型半胱氨酸与维生素D和B_(12)在绝经后非骨质疏松症和同型半胱氨酸与维生素B_(12)在绝经后骨质疏松症女性中呈显著负相关。结论高水平同型半胱氨酸可以通过绝经后非骨质疏松症患者维生素D水平和绝经后骨质疏松症女性维生素B_(12)水平预测。     

A role for vitamin D and the vitamin D receptor in keloid disorder

Keloids are disfiguring fibroproliferative lesions that can occur in susceptible individuals following any skin injury. They are extremely challenging to treat, with relatively low response rates to current therapies and high rates of recurrence after treatment. Although several distinct genetic loci have been associated with keloid formation in different populations, there has been no single causative gene yet identified and the molecular mechanisms guiding keloid development are incompletely understood. Further, although it is well known that keloids are more commonly observed in populations with dark skin pigmentation, the basis for increased keloid risk in skin of colour is not yet known. Because individuals with dark skin pigmentation are at higher risk for vitamin D deficiency, the role of vitamin D in keloid pathology has gained interest in the keloid research community. A limited number of studies have found lower serum vitamin D levels in patients with keloids, and reduced expression of the vitamin D receptor (VDR) in keloid lesions compared with uninjured skin. Vitamin D has documented anti-inflammatory, anti-proliferative and pro-differentiation activities, suggesting it may have a therapeutic role in suppression of keloid fibrosis. Here we review the evidence supporting a role for vitamin D and VDR in keloid pathology.     

Vitamin D status in postmenopausal women living at higher latitudes in the UK in relation to bone health, overweight, sunlight exposure and dietary vitamin D

For 5 months a year the UK has insufficient sunlight for cutaneous synthesis of vitamin D and winter requirements are met from stores made the previous summer. Although there are few natural dietary sources, dietary intake may help maintain vitamin D status.

We investigated the relationship between 25-hydroxyvitamin D (25(OH)D), bone health, overweight, sunlight exposure and dietary vitamin D in 3113 women (age 54.8 [SD 2.3] years) living at latitude 57°N between 1998–2000. Serum 25(OH)D was measured by high performance liquid chromatography (HPLC), dietary intakes (food frequency questionnaire, n = 2598), sunlight exposure (questionnaire, n = 2402) and bone markers were assessed. Bone mineral density (BMD) was measured by dual x-ray absorptiometry in all women at the sampling visit and 6 years before. Seasonal variation in 25(OH)D was not substantial with a peak in the autumn (23.7 [9.9] ng/ml) and a nadir in spring (19.7 [7.6] ng/ml). Daily intake of vitamin D was 4.2 [2.5] μg from food only and 5.8 [4.0] μg including vitamin D from cod liver oil and multivitamins. The latter was associated with 25(OH)D at each season whereas vitamin D simply from food was associated with 25(OH)D in winter and spring only. Sunlight exposure was associated with 25(OH)D in summer and autumn. 25(OH)D was negatively associated with increased bone resorption and bone loss (P < 0.05) remaining significant after adjustment for confounders (age, weight, height, menopausal status/HRT use, physical activity and socio-economic status). Using an insufficiency cut-off of < 28 ng/ml 25(OH)D, showed lower concentrations of bone resorption markers in the upper category (fDPD/Cr 5.1 [1.7] nmol/mmol compared to 5.3 [2.1] nmol/mmol, P = 0.03) and no difference in BMD or bone loss. 25(OH)D was lower (P < 0.01) and parathyroid hormone higher (P < 0.01) in the top quintile of body mass index. In conclusion, low vitamin D status is associated with greater bone turnover, bone loss and obesity. Diet appears to attenuate the seasonal variation of vitamin D status in early postmenopausal women at northerly latitude where quality of sunlight for production of vitamin D is diminished.     

Serum 25-hydroxyvitamin D levels in vitamin D-insufficient hip fracture patients after supplementation with ergocalciferol and cholecalciferol

Vitamin D insufficiency is commonly associated with hip fracture. However, the equipotency of ergocalciferol and cholecalciferol supplementation in this patient group has not been studied in a randomized trial using high-performance liquid chromatography (HPLC) measurement of serum 25-hydroxyvitamin D (25OHD). The objective of this study was to determine if ergocalciferol and cholecalciferol are equipotent therapies in vitamin D-insufficient hip fracture patients.Ninety five hip fracture inpatients with vitamin D insufficiency (25OHD < 50 nmol/L) were randomized, double-blind, to treatment with ergocalciferol 1000 IU/day (n = 48) or cholecalciferol 1000 IU/day (n = 47) for three months. All participants were also given a placebo matching the alternative treatment to maintain blinding of treatment allocation. The primary endpoint was total serum 25OHD measured by HPLC. Secondary endpoints included 25OHD measured by radioimmunoassay (RIA), intact parathyroid hormone (iPTH), and bioactive (1–84) whole PTH (wPTH).Seventy patients (74%) completed the study with paired samples for analysis. Cholecalciferol supplementation resulted in a 31% greater increase in total HPLC-measured 25OHD (p = 0.010) and 52% greater rise in RIA-measured 25OHD (p < 0.001) than supplementation with an equivalent dose of ergocalciferol. Changes in iPTH and wPTH were not significantly different between calciferol treatments (p > 0.05).In vitamin D-insufficient hip fracture patients, supplementation with cholecalciferol 1000 IU/day for three months was more effective in increasing serum 25OHD than an equivalent dose of ergocalciferol. However, the lack of difference in PTH lowering between calciferol treatments raises questions about the biological importance of this observation.     

Changes in 25-Hydroxyvitamin D3 to oral treatment with vitamin D3 in postmenopausal females with osteoporosis

Summary  This study reports on oral treatment with different doses of vitamin D3 ranging from 25 to 200 μg in females with 25-hydroxyvitamin D3 levels < 60 nmol/L screened for participation in an osteoporosis trial. A guidance to safely and efficiently achieve 25-hydroxyvitamin D3 levels > 60 nmol/L is presented. Introduction  The importance of vitamin D for skeletal health has been implemented in clinical trials in osteoporosis. The threshold of 25-hydroxyvitamin D for inclusion has changed from 30 to 60 nmol/L. This study reports on oral treatment with different doses of vitamin D3 in females with 25-hydroxyvitamin D3 levels < 60 nmol/L. Methods  In 131 postmenopausal females screened for participation in an osteoporosis trial, the 25-hydroxyvitamin D3 concentration was < 60 nmol/L. They were treated with 25 (n = 22), 50 (n = 19), 75 (n = 19), 100 (n = 41) or 200 μg (n = 30) of vitamin D3 daily for at least 10 days. Results  In the females treated with 25, 50, 75, 100 and 200 μg of vitamin D3 daily the 25-hydroxyvitamin D3 concentrations increased significantly from 32.4 ± 2.7 (mean ± SEM) to 50.8 ± 2.9, from 46.7 ± 2.8 to 65.8 ± 2.6, from 41.6 ± 2.7 to 67.4 ± 2.9, from 46.7 ± 1.4 to 64.4 ± 2.2 and from 42.1 ± 2.0 to 71.2 ± 2.8 nmol/L, respectively (p < 0.001). S-calcium increased significantly but within the reference range (p < 0.006). Conclusion  Oral vitamin D3 safely increased 25-hydroxyvitamin D3 concentrations in all females above 60 nmol/L. This study demonstrates how to achieve the new recommended 25-hydroxyvitamin D concentrations within the screening period of a clinical trial.     

中老年腰椎间盘退变程度与椎旁肌退变及维生素D水平的相关性研究

目的:研究腰椎间盘退变程度与椎旁肌群退变及血清维生素D水平之间的关系。方法 :回顾性分析我院中老年腰椎间盘退变患者150例,其中女性105例,男性45例,年龄41～93(67.0±10.1)岁,所有患者行腰椎MRI检查和血清维生素D水平测定,按Pfirrmann标准,通过对髓核结构、髓核信号强度、髓核与纤维环界限及椎间盘高度等评估,对腰椎间盘退变程度分级,并根据Pfirrmann等级进行分组,纳入病例中无Ⅰ级患者,Ⅱ～Ⅴ级病例数分别为:L4/5节段,n=17、59、60及14;L5/S1节段,n=22、46、55及27。在MRI T2加权像上测量L4/5及L5/S1节段椎旁肌群(腰肌、竖脊肌及多裂肌)的标准横截面积值。根据Goutallier分级,通过评估椎旁肌脂肪浸润量多少,对椎旁肌脂肪浸润程度分级。根据内分泌学会临床实践指南将血清维生素D水平分为正常(30ng/ml)、不足(20～30ng/ml)及缺乏(20ng/ml)。分类数据的分析通过秩和检验,定量数据的分析通过单因素方差分析或Kruskal-Wallis检验,变量间相关性分析通过Spearman相关系数。结果:L4/5节段腰肌、竖脊肌及多裂肌的横截面积与腰椎间盘退变程度呈负相关(r=-0.294、-0.250及-0.182);L5/S1节段腰肌及多裂肌的横截面积与腰椎间盘退变程度呈负相关(r=-0.344及-0.346)。竖脊肌及多裂肌的脂肪浸润程度与腰椎间盘退变程度具有相关性(L4/5节段:r=0.174及0.188;L5/S1节段:r=0.193及0.283)。腰椎间盘退变分级Ⅲ～Ⅴ级患者中维生素D缺乏者与Ⅱ级患者比较,所占比例更高(Ⅱ～Ⅴ级:L4/5,47.06%、59.32%、60.00%及57.14%;L5/S1,45.45%、58.70%、56.36%及70.37%)。维生素D不足或缺乏者与正常者比较,竖脊肌及多裂肌的脂肪浸润Goutallier 2～4级所占比例更高。98%以上腰肌无或仅轻度脂肪浸润,几乎不受腰椎间盘退变程度及维生素D水平的影响。结论:椎旁肌横截面积随腰椎间盘退变程度加重而缩小,竖脊肌及多裂肌的脂肪浸润程度与腰椎间盘退变程度存在相关性。腰椎间盘退变程度较重者,维生素D缺乏的可能性更大。而维生素D缺乏者,竖脊肌及多裂肌的脂肪浸润程度可能更重。     

Association between vitamin D deficiency and diabetic foot ulcer wound in diabetic subjects: A meta‐analysis

A meta‐analysis was performed to evaluate the association between vitamin D deficiency and diabetic foot ulcer wounds in diabetic subjects. A systematic literature search up to March 2022 incorporated 7586 subjects with diabetes mellitus at the beginning of the study; 1565 were using diabetic subjects with foot ulcer wounds, and 6021 were non‐ulcerated diabetic subjects. Statistical tools like the dichotomous and contentious method were used within a random or fixed‐influence model to establish the odds ratio (OR) and mean difference (MD) with 95% confidence intervals (CIs) to evaluate the influence of vitamin D deficiency in managing diabetic foot ulcer wound. Diabetic subjects with foot ulcer wounds had significantly lower vitamin D levels (MD, −6.48; 95% CI, −10.84 to −2.11, P < .004), higher prevalence of vitamin D deficiency (<50 nmoL/L) (OR, 1.82; 95% CI, 1.32‐2.52, P < .001), and higher prevalence of severe vitamin D deficiency (OR, 2.53; 95% CI, 1.65‐3.89, P < .001) compared with non‐ulcerated diabetic subjects. Diabetic subjects with foot ulcer wounds had significantly lower vitamin D levels, higher prevalence of vitamin D deficiency, and higher prevalence of severe vitamin D deficiency compared with non‐ulcerated diabetic subjects. Further studies are required to validate these findings.     

血清维生素D和K水平和慢性胰腺炎患者骨质疏松症相关性研究

目的探索血清维生素D和K水平和慢性胰腺炎患者骨质疏松症相关性。方法通过双能X射线吸收测定法检测骨密度和粪弹性蛋白酶检测评估胰腺功能;检测患者血清维生素D和维生素K的水平;通过逻辑回归分析研究变量与骨密度之间的关联。结果共有211名CP患者,其中男性142例。有18%的患者有晚期CP,患有胰腺外分泌功能不全为43%。维生素D和K缺乏分别为56%和32%。骨量减少的诊断率为42%,骨质疏松症的诊断率为22%。在多变量分析中,女性、年龄和较高BMI与骨质疏松症存在相关性。在男性患者中,与骨质疏松症相关的唯一因素是维生素K缺乏症。结论 CP患者的骨病发生率很高,且维生素K缺乏作为男性骨质疏松症患者唯一的危险因素。     

活性维生素D3对2型糖尿病患者肾脏保护作用的Meta分析

目的系统评价活性维生素D3治疗2型糖尿病(type 2 diabetes,T2DM)的有效性和安全性以及其对肾脏的保护作用。方法计算机检索PubMed、EMBase、谷歌学术、中国知网、维普数据库、万方数据库和中国生物医学文献数据库,检索时间范围均从建库至2014年12月。收集以活性维生素D3为干预措施治疗T2DM的临床随机对照试验(randomized controlled trials,RCT),按照Cochrane系统评价方法,对纳入标准的RCT进行方法学质量评价和疗效指标合并分析。结果共纳入10个RCT。采用固定效应模型对尿白蛋白肌酐比值(urinary albumin creatinine ratio,UACR)进行比较,加权均数差(standardized mean difference,SMD)=-0.34(95%CI:-0.55,-0.12;P=0.002),治疗组较对照组明显降低;采用随机效应模型对血肌酐进行比较:SMD=-1.27(95%CI:-3.66,1.12;P=0.30),差异无统计学意义(P0.05);另外,治疗组在降低T2DM患者胰岛素抵抗、三酰甘油、总胆固醇、收缩压和升高高密度脂蛋白胆固醇(high-density lipoprotein cholesterol,HDL-C)等方面效果与对照组比较[SMD或加权均数差(weighted mean difference,WMD)(95%CI)分别为-2.69(-3.42,-1.97);-0.37(-0.63,-0.11);-0.30(-0.56,-0.05);-5.94(-9.08,-2.80);0.33(0.03,0.63)],差异有统计学意义(P0.05);但对糖化血红蛋白(glycosylated hemoglobin,HbA1c)和舒张压无明显影响[WMD(95%CI)分别为0.06(-0.08,0.19),-1.77(-3.65,-0.12);P0.05]。结论活性维生素D3可以改善T2DM患者糖代谢,降低血脂、血压及蛋白尿,具有一定的肾脏保护作用。     

Correlation of vitamin D,bone mineral density and parathyroid hormone levels in adults with low bone density

Background:

Bone mineral densiy (BMD) is known to be affected by serum 25-hydroxyvitamin D (25(OH) D) levels, intact parathyroid hormone (iPTH) levels. Indian data pertinent to above observation is scant. Our study aimed to investigate the relationships between serum 25-hydroxyvitamin D (25(OH) D) levels, intact parathyroid hormone (iPTH) levels and bone mineral density (BMD) in a cohort of Indian patients.

Materials and Methods:

Adults with or without fragility fractures with low BMD at the hip or lumbar spine were evaluated clinically along with laboratory investigations. T-scores of the hip and spine were derived from BMD-DEXA (dual-energy X-ray absorptiometry). Multivariate regression models were used to investigate the relationships between serum 25(OH) D, iPTH and BMD.

Results:

Total of 102 patients (male:female = 38:64) with a mean age of 62.5 ± 6.4 years were included in the study. Forty-four patients had osteopenia. Osteoporosis was present in 58 patients. The mean values for serum 25(OH) D and iPTH levels were 21.3 ± 0.5 ng/ml and 53.1 ± 22.3 pg/ml, respectively. In 84.3% of patients, serum 25(OH) D levels were below 30 ng/ml (Normal = 30-74 ng/ml), confirming vitamin D deficiency. There was no association between 25(OH) D levels and BMD at the hip or lumbar spine (P = 0.473 and 0.353, respectively). Both at the hip and lumbar spine; iPTH levels, male gender, body mass index (BMI) and age were found to be significant predictors of BMD. Patients with higher BMI had significantly lower BMD and T-score. At levels <30 ng/ml, 25(OH) D was negatively associated with iPTH (P = 0.041).

Conclusion:

Among our cohort of patients with low BMD, no direct relationship between serum 25(OH) D levels and BMD was observed. However, a negative correlation between iPTH and 25(OH) D at serum 25(OH) D concentrations <30 ng/ml. Serum iPTH levels showed a significant negative association with BMD at the hip and lumbar spine. Our findings underscore the critical role of parathyroid hormone in bone metabolism and health.     

Prevalence of anal incontinence according to age and gender: a systematic review and meta-regression analysis

Context Anal incontinence is increasingly being recognised as a significant cause of physical and psychological morbidity with implications for healthcare provision within the community. There is controversy about which population groups are most disadvantaged by this chronic condition.Objectives The aim of this study was to evaluate the prevalence of this condition in the community according to age and gender, a systematic review was performed. Data sources: Data were from Embase, Medline, bibliographies of known articles and contact with experts.Study selection Studies were selected if data on anal incontinence could be extracted for participants over 15 years of age and living in the community.Data extraction Data were extracted using a piloted form on participants' characteristics, study quality and incontinence rates.Data synthesis Meta-analysis was used to combine data from multiple studies, and meta-regression evaluated the variation in rates according to age and gender in an analysis adjusted for study quality.Results There were 29 studies (69,152 participants), of which 5 met over half of the high quality criteria. The rate of solid and liquid faecal incontinence among people aged 15–60 years was 0.8% [95% confidence interval (CI) 0.3–1.9] in men and 1.6% (95% CI 0.8–3.1) in women. In those aged over 60, this increased to 5.1% (95% CI 3.4–7.6) in men and 6.2% (95% CI 4.9–8.0) in women. Meta-regression showed that age had a significant influence on rates of solid and liquid faecal incontinence (p=0.007), but not gender (p=0.368) or study quality (p=0.085).Conclusions The rate of solid and liquid faecal incontinence in older people is significantly higher than their younger counterparts. Gender differences in rates did not reach statistical significance.Electronic Supplementary Material Supplementary material is available in the online version ofthis article at andis accessible for authorized users.     

Association between vitamin D deficiency and diabetic foot ulcer wound in diabetic subjects: A meta-analysis

A meta-analysis was performed to evaluate the association between vitamin D deficiency and diabetic foot ulcer wounds in diabetic subjects. A systematic literature search up to March 2022 incorporated 7586 subjects with diabetes mellitus at the beginning of the study; 1565 were using diabetic subjects with foot ulcer wounds, and 6021 were non-ulcerated diabetic subjects. Statistical tools like the dichotomous and contentious method were used within a random or fixed-influence model to establish the odds ratio (OR) and mean difference (MD) with 95% confidence intervals (CIs) to evaluate the influence of vitamin D deficiency in managing diabetic foot ulcer wound. Diabetic subjects with foot ulcer wounds had significantly lower vitamin D levels (MD, −6.48; 95% CI, −10.84 to −2.11, P < .004), higher prevalence of vitamin D deficiency (<50 nmoL/L) (OR, 1.82; 95% CI, 1.32-2.52, P < .001), and higher prevalence of severe vitamin D deficiency (OR, 2.53; 95% CI, 1.65-3.89, P < .001) compared with non-ulcerated diabetic subjects. Diabetic subjects with foot ulcer wounds had significantly lower vitamin D levels, higher prevalence of vitamin D deficiency, and higher prevalence of severe vitamin D deficiency compared with non-ulcerated diabetic subjects. Further studies are required to validate these findings.     

Vitamin D status and its relationship with bone mineral density in healthy Asian Indians

Synthesis of vitamin D takes place in the skin under the effect of sunlight. The Indian subcontinent is situated between 8.4° N and 37.6° N latitudes and has adequate sunshine throughout the year. Thus, it has been presumed that Indians are vitamin D sufficient. We measured serum 25-hydroxy vitamin D [25(OH)D] (n=92) and 1,25-dihydroxy vitamin D [1, 25(OH)₂D] (n=65) levels in healthy hospital staff, using ¹²⁵I radioimmunoassay. Serum intact parathyroid hormone (PTH) concentration was estimated by immunoradiometric assay. Bone mineral density was estimated using a dual energy X-ray absorptiometer (Hologic^R QDR 4500A). Using a serum 25(OH)D level of 15 ng/ml as a cutoff, 66.3% (61/92) of the subjects were found to be vitamin D deficient. Of these, 20.6% (19/92) subjects had severe vitamin D deficiency (<5 ng/ml), 27.2% (25/92) had moderate vitamin D deficiency (5–9.9 ng/ml), while 18.5% (17/92) had mild vitamin D deficiency (10–14.9 ng/ml). When a serum 25(OH)D level of 20 ng/ml was used as a cutoff, 78.3% subjects were diagnosed to be vitamin D deficient/insufficient. The serum 1,25(OH)₂D level was within the normal range (40.6±20.1 pg/ml; mean ± SD). Mean (±SD) serum intact PTH, estimated in a limited number of subjects (n=15), was 72.3 (±21.0) pg/ml (range 36–100 pg/ml). There was a significant correlation between daily sun exposure and 25(OH)D levels (r=0.731, P<0.001). The serum 25(OH)D level correlated with BMD at the femoral neck and Ward's triangle (r=0.50, P=0.020 and r=0.46, P=0.037, respectively). Our findings show that vitamin D deficiency is common in urban north Indian hospital staff. The possible reasons include inadequate sunlight exposure and skin pigmentation in Indians. The serum 1,25(OH)₂D level is not a good indicator of vitamin D deficiency. A low serum 25(OH)D level is possibly one of the reasons for lower bone mineral density among Indians.