Low-dose cytarabine combined with differentiating or DNA hypomethylating agents,such as vitamin D compounds,is a potential regimen to treat acute myeloid leukemia（AML） patients who are unfit for high-intensity chemo...Low-dose cytarabine combined with differentiating or DNA hypomethylating agents,such as vitamin D compounds,is a potential regimen to treat acute myeloid leukemia（AML） patients who are unfit for high-intensity chemotherapy.The present study aimed to determine which subset of AML would be most responsive to low-dose cytarabine with the differentiating agent 1,25-dihydroxyvitamin D3（1,25-D3）.Here,firstly,c Bio Portal database was used and we found out that vitamin D receptor（VDR） was highly expressed in acute monocytic leukemia（M5） and high VDR expression was associated with a poor survival of AML patients.Then,we confirmed that 1,25-D3 at clinical available concentration could induce more significant differentiation in acute monocytic leukemia cell lines（U937,MOLM-13,THP-1） and blasts from M5 patients than in non-monocytic cell lines（KG1 a and K562） and blasts from M2 patient.Finally,it was shown that the combination of 1,25-D3 and low-dose cytarabine further increased the differentiating rate,growth inhibition and G0/G1 arrest,while mild changes were found in the apoptosis in acute monocytic leukemia cell lines.Our study demonstrates that the enhanced response of acute monocytic leukemia cells to low-dose cytarabine by 1,25-D3 might indicate a novel therapeutic direction for patients with acute monocytic leukemia,especially for elderly and frail ones.展开更多
Vitamin D levels have been linked to various health outcomes including reproductive disorders. The purpose of this study was to explore the association between serum vitamin D level （25-hydroxy-vitamin D, or 250HD） ...Vitamin D levels have been linked to various health outcomes including reproductive disorders. The purpose of this study was to explore the association between serum vitamin D level （25-hydroxy-vitamin D, or 250HD） and semen and hormonal parameters. This is a cross-sectional study that included 170 healthy men recruited for the study of spermatogenesis from the general population. Men completed general and reproductive health questionnaires, and donated blood and semen samples. The main measures were hormonal （total and free testosterone, sex hormone-binding globulin, estradiol, follicle-stimulating hormone and luteinizing hormone） and semen parameters, adjusted （n= 147） for age, body mass index （BMI）, season, alcohol intake and smoking, in relation to categories of vitamin D levels, determined apriori. The mean age of the study population was 29.0±8.5 years and mean BMI was 24.3±3.2 kg m-2. The mean 250HD was 34.1± 15.06 ng m1-1. BMI showed a negative association with 250HD. Sperm concentration, sperm progressive motility, sperm morphology, and total progressively motile sperm count were lower in men with ‘250HD ≥ 50 ng ml-1＇ when compared to men with‘20 ng ml-1 ≤ 250H D〈 50 ng ml-1,. Total sperm count and total progressive motile sperm count were lower in men with ‘250HD〈20 ng ml-1＇ when compared to men with‘20 ng ml-1≤250HD〈50 ng ml-1＇. The adjusted means of various hormonal parameters did not show statistical difference in the different categories of 250HD. In conclusion, serum vitamin D levels at high and low levels can be negatively associated with semen parameters.展开更多
Objectives: To study the prevalence of vitamin D deficiency among newly diagnosed multiple sclerosis patients. Patients and Methods: It is a case control cross matching age related study done on totally 40 subjects (2...Objectives: To study the prevalence of vitamin D deficiency among newly diagnosed multiple sclerosis patients. Patients and Methods: It is a case control cross matching age related study done on totally 40 subjects (20 patients are newly diagnosed as MS;patients don’t start any medication for MS (naive patients) and 20 subjects are controls with the same age and sex). Base line vitamin D level was measured (i.e. vitamin D, 25-OH (total)) and MRI brain with contrast was done for all patients. Results: Low total vitamin D level was seen among 65% of patients with MS (13/20);however, this was only 20% of normal controls (4/20). Conclusion: Hypovitaminosis D is common in MS patients.展开更多
目的探讨慢性下腰痛(chronic low back pain,CLBP)患者与肌肉减少症及维生素D之间的相互关系。明确CLBP的发病机制。方法选取我院在2015年10月至2018年12月收治的疑似CLBP患者341例。根据CLBP诊断标准将疑似CLBP患者分为无CLBP组(n=235)...目的探讨慢性下腰痛(chronic low back pain,CLBP)患者与肌肉减少症及维生素D之间的相互关系。明确CLBP的发病机制。方法选取我院在2015年10月至2018年12月收治的疑似CLBP患者341例。根据CLBP诊断标准将疑似CLBP患者分为无CLBP组(n=235)及CLBP组(n=106)。根据肌肉减少症诊断标准将确诊的CLBP患者分为无肌肉减少症组(n=62)及肌肉减少症组(n=44)。24 h内收集患者临床资料[年龄、性别、体质指数(BMI)、危险因素(吸烟、心血管疾病、呼吸系统疾病)、微型营养评估精法(MNA-SF)];血液指标[总蛋白(TP)、C-反应蛋白(CRP)];采用VAS评分评估CLBP疼痛程度。采用酶联免疫吸附试验(ELISA)来测定血清中25-羟维生素D[25(OH)D]水平。结果CLBP组患者的年龄、CRP高于无CLBP组(P<0.05);BMI、MNA-SF、25(OH)D、GS、CC低于无CLBP组(P<0.05)。CLBP组患者中的25(OH)D不足、25(OH)D缺乏及肌肉减少症比例高于无CLBP组(P<0.05)。CLBP组患者VAS与25(OH)D、握力(GS)、小腿围(CC)呈现负相关性(r=-0.523、-0.343、-0.584,P均<0.05)。年龄(OR:1.640,95%CI:1.008~2.147)、肌肉减少症(OR:3.575,95%CI:2.196~5.819)、维生素D不足(OR:2.034,95%CI:1.228~4.352)、维生素D缺乏(OR:6.969,95%CI:3.702~13.120)是CLBP发生的独立危险因素,MNA-SF(OR:0.349,95%CI:0.211~0.578)是CLBP发生的独立保护因素。肌肉减少症组患者年龄、吸烟比例、CRP、维生素D不足、维生素D缺乏高于无肌肉减少症组(P<0.05);MNA-SF低于无肌肉减少症组(P<0.05)。维生素D不足(OR:2.070,95%CI:1.009~3.861)、维生素D缺乏(OR:7.122,95%CI:3.776~13.434)是肌肉减少症发生的独立危险因素,MNA-SF(OR:0.257,95%CI:0.135~0.487)是CLBP发生的独立保护因素。结论通过临床观察发现维生素D水平降低可能是肌肉减少症导致CLBP发生的潜在机制。该研究强化了常规评估CLBP患者的维生素D水平并补充至正常的重要。展开更多
目的分析急性脑梗死患者血清25-羟维生素D [25-hydroxy vitamin D,25(OH)D]、高敏C反应蛋白(high sensitivity C-reactive protein,hs-CRP)、低密度脂蛋白(low density lipoprotein,LDL)水平变化与TOAST(trial of org 10172 in acute st...目的分析急性脑梗死患者血清25-羟维生素D [25-hydroxy vitamin D,25(OH)D]、高敏C反应蛋白(high sensitivity C-reactive protein,hs-CRP)、低密度脂蛋白(low density lipoprotein,LDL)水平变化与TOAST(trial of org 10172 in acute stroke treatment)分型的关系。方法选取2014年8月至2017年10月本院收治的120例急性脑梗死患者纳入病例组,并进行TOAST分型,选择同期于本院体检的40例健康者纳入对照组,采集两组研究对象空腹肘静脉血测定血清25(OH)D、hs-CRP、LDL水平,分析上述指标与急性脑梗死患者TOAST分型的关系。结果病例组患者血清25(OH)D水平显著低于对照组(P <0.05),hs-CRP、LDL水平均显著高于对照组(P_均<0.05);心源性脑梗死组和其他原因脑梗死组患者25(OH)D水平均显著高于动脉脑梗死组(P_均<0.05),LDL水平显著低于动脉脑梗死组(P <0.05),其他原因脑梗死组患者hs-CRP水平均显著低于动脉脑梗死组和心源性脑梗死组(P_均<0.05);心源性脑梗死组和其他原因脑梗死组患者NIHSS评分均显著低于动脉脑梗死组(P_均<0.05)。急性脑梗死患者血清25(OH)D水平与美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分呈负相关(r=-0.476,P <0.05),其hs-CRP、LDL水平与NIHSS评分均呈正相关(r=0.501、0.301,P_均<0.05)。结论不同TOAST分型的急性脑梗死患者血清25(OH)D、hs-CRP、LDL水平存在一定差异,且患者血清25(OH)D水平与神经功能损伤程度呈负相关,hs-CRP、LDL水平与神经功能损伤程度呈正相关。展开更多
基金supported by grants from the National Natural Science Foundation of China(No.81400172 and No.81470330)
文摘Low-dose cytarabine combined with differentiating or DNA hypomethylating agents,such as vitamin D compounds,is a potential regimen to treat acute myeloid leukemia（AML） patients who are unfit for high-intensity chemotherapy.The present study aimed to determine which subset of AML would be most responsive to low-dose cytarabine with the differentiating agent 1,25-dihydroxyvitamin D3（1,25-D3）.Here,firstly,c Bio Portal database was used and we found out that vitamin D receptor（VDR） was highly expressed in acute monocytic leukemia（M5） and high VDR expression was associated with a poor survival of AML patients.Then,we confirmed that 1,25-D3 at clinical available concentration could induce more significant differentiation in acute monocytic leukemia cell lines（U937,MOLM-13,THP-1） and blasts from M5 patients than in non-monocytic cell lines（KG1 a and K562） and blasts from M2 patient.Finally,it was shown that the combination of 1,25-D3 and low-dose cytarabine further increased the differentiating rate,growth inhibition and G0/G1 arrest,while mild changes were found in the apoptosis in acute monocytic leukemia cell lines.Our study demonstrates that the enhanced response of acute monocytic leukemia cells to low-dose cytarabine by 1,25-D3 might indicate a novel therapeutic direction for patients with acute monocytic leukemia,especially for elderly and frail ones.
文摘Vitamin D levels have been linked to various health outcomes including reproductive disorders. The purpose of this study was to explore the association between serum vitamin D level （25-hydroxy-vitamin D, or 250HD） and semen and hormonal parameters. This is a cross-sectional study that included 170 healthy men recruited for the study of spermatogenesis from the general population. Men completed general and reproductive health questionnaires, and donated blood and semen samples. The main measures were hormonal （total and free testosterone, sex hormone-binding globulin, estradiol, follicle-stimulating hormone and luteinizing hormone） and semen parameters, adjusted （n= 147） for age, body mass index （BMI）, season, alcohol intake and smoking, in relation to categories of vitamin D levels, determined apriori. The mean age of the study population was 29.0±8.5 years and mean BMI was 24.3±3.2 kg m-2. The mean 250HD was 34.1± 15.06 ng m1-1. BMI showed a negative association with 250HD. Sperm concentration, sperm progressive motility, sperm morphology, and total progressively motile sperm count were lower in men with ‘250HD ≥ 50 ng ml-1＇ when compared to men with‘20 ng ml-1 ≤ 250H D〈 50 ng ml-1,. Total sperm count and total progressive motile sperm count were lower in men with ‘250HD〈20 ng ml-1＇ when compared to men with‘20 ng ml-1≤250HD〈50 ng ml-1＇. The adjusted means of various hormonal parameters did not show statistical difference in the different categories of 250HD. In conclusion, serum vitamin D levels at high and low levels can be negatively associated with semen parameters.
文摘Objectives: To study the prevalence of vitamin D deficiency among newly diagnosed multiple sclerosis patients. Patients and Methods: It is a case control cross matching age related study done on totally 40 subjects (20 patients are newly diagnosed as MS;patients don’t start any medication for MS (naive patients) and 20 subjects are controls with the same age and sex). Base line vitamin D level was measured (i.e. vitamin D, 25-OH (total)) and MRI brain with contrast was done for all patients. Results: Low total vitamin D level was seen among 65% of patients with MS (13/20);however, this was only 20% of normal controls (4/20). Conclusion: Hypovitaminosis D is common in MS patients.
文摘目的探讨慢性下腰痛(chronic low back pain,CLBP)患者与肌肉减少症及维生素D之间的相互关系。明确CLBP的发病机制。方法选取我院在2015年10月至2018年12月收治的疑似CLBP患者341例。根据CLBP诊断标准将疑似CLBP患者分为无CLBP组(n=235)及CLBP组(n=106)。根据肌肉减少症诊断标准将确诊的CLBP患者分为无肌肉减少症组(n=62)及肌肉减少症组(n=44)。24 h内收集患者临床资料[年龄、性别、体质指数(BMI)、危险因素(吸烟、心血管疾病、呼吸系统疾病)、微型营养评估精法(MNA-SF)];血液指标[总蛋白(TP)、C-反应蛋白(CRP)];采用VAS评分评估CLBP疼痛程度。采用酶联免疫吸附试验(ELISA)来测定血清中25-羟维生素D[25(OH)D]水平。结果CLBP组患者的年龄、CRP高于无CLBP组(P<0.05);BMI、MNA-SF、25(OH)D、GS、CC低于无CLBP组(P<0.05)。CLBP组患者中的25(OH)D不足、25(OH)D缺乏及肌肉减少症比例高于无CLBP组(P<0.05)。CLBP组患者VAS与25(OH)D、握力(GS)、小腿围(CC)呈现负相关性(r=-0.523、-0.343、-0.584,P均<0.05)。年龄(OR:1.640,95%CI:1.008~2.147)、肌肉减少症(OR:3.575,95%CI:2.196~5.819)、维生素D不足(OR:2.034,95%CI:1.228~4.352)、维生素D缺乏(OR:6.969,95%CI:3.702~13.120)是CLBP发生的独立危险因素,MNA-SF(OR:0.349,95%CI:0.211~0.578)是CLBP发生的独立保护因素。肌肉减少症组患者年龄、吸烟比例、CRP、维生素D不足、维生素D缺乏高于无肌肉减少症组(P<0.05);MNA-SF低于无肌肉减少症组(P<0.05)。维生素D不足(OR:2.070,95%CI:1.009~3.861)、维生素D缺乏(OR:7.122,95%CI:3.776~13.434)是肌肉减少症发生的独立危险因素,MNA-SF(OR:0.257,95%CI:0.135~0.487)是CLBP发生的独立保护因素。结论通过临床观察发现维生素D水平降低可能是肌肉减少症导致CLBP发生的潜在机制。该研究强化了常规评估CLBP患者的维生素D水平并补充至正常的重要。
文摘目的分析急性脑梗死患者血清25-羟维生素D [25-hydroxy vitamin D,25(OH)D]、高敏C反应蛋白(high sensitivity C-reactive protein,hs-CRP)、低密度脂蛋白(low density lipoprotein,LDL)水平变化与TOAST(trial of org 10172 in acute stroke treatment)分型的关系。方法选取2014年8月至2017年10月本院收治的120例急性脑梗死患者纳入病例组,并进行TOAST分型,选择同期于本院体检的40例健康者纳入对照组,采集两组研究对象空腹肘静脉血测定血清25(OH)D、hs-CRP、LDL水平,分析上述指标与急性脑梗死患者TOAST分型的关系。结果病例组患者血清25(OH)D水平显著低于对照组(P <0.05),hs-CRP、LDL水平均显著高于对照组(P_均<0.05);心源性脑梗死组和其他原因脑梗死组患者25(OH)D水平均显著高于动脉脑梗死组(P_均<0.05),LDL水平显著低于动脉脑梗死组(P <0.05),其他原因脑梗死组患者hs-CRP水平均显著低于动脉脑梗死组和心源性脑梗死组(P_均<0.05);心源性脑梗死组和其他原因脑梗死组患者NIHSS评分均显著低于动脉脑梗死组(P_均<0.05)。急性脑梗死患者血清25(OH)D水平与美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分呈负相关(r=-0.476,P <0.05),其hs-CRP、LDL水平与NIHSS评分均呈正相关(r=0.501、0.301,P_均<0.05)。结论不同TOAST分型的急性脑梗死患者血清25(OH)D、hs-CRP、LDL水平存在一定差异,且患者血清25(OH)D水平与神经功能损伤程度呈负相关,hs-CRP、LDL水平与神经功能损伤程度呈正相关。
