Role of vitamin D and vitamin D receptor in evaluation and treatment of liver cirrhosis / 临床肝胆病杂志

Vitamin D is mainly produced in the liver, and chronic liver injury caused by various reasons will affect the metabolism of vitamin D, lead to vitamin D deficiency, and accelerate disease progression. Recent studies have confirmed that in patients with liver cirrhosis, the degree of vitamin D deficiency is closely associated with the severity and complications of liver cirrhosis. This article introduces the role of vitamin D and vitamin D receptor in the evaluation and treatment of liver cirrhosis and points out that vitamin D helps to evaluate the severity of liver cirrhosis and may become a new point and an important drug for the treatment of liver cirrhosis.

The association of vitamin D receptor gene Apa Ⅰ and Bsm Ⅰ polymorphism with systemic lupus erythematosus / 中华内科杂志

ObjectiveTo determine the distribution of vitamin D receptor (VDR) gene Apa Ⅰ and Bsm Ⅰ polymorphism in systemic lupus erythematosus (SLE) and the association with SLE in Chinese Han patients.MethodsGenomic DNA from 244 Chinese SLE patients and 162 sex and ethnically matched controls were typed for VDR Apa Ⅰand Bsm Ⅰpolymorphism combination by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). Clinical characteristics were analyzed between different Apa ] and Bsm Ⅰ genotypes.ResultsThere was no significant difference between the distribution frequencies of allelic gene A and a in SLE patients and the controls,but the distribution frequency of genotypes heterozygote Aa in SLE patients was higher than that in the controls ( 38.9％ vs 22.2％,x2 =12.442,P =0.000).There was no significant difference between the distribution frequency of allelic gene and genotypes of Bsm Ⅰin SLE patients and the controls ( P ＞ 0.05 ).However,there was significant difference between the distribution frequencies of Apa Ⅰ and Bsm Ⅰ genotypes combination in SLE patients and the controls (x2 =18.226,P =0.006).The distribution frequency of genotypes Aa-bb in SLE patients was higher than that in the controls ( 32.4％ vs 17.9％,x2 =10.449 P =0.001 ),while the distribution frequency of genotypes Aa-bb in SLE patients was lower than that in the controls (30.3％ vs 42.0％,x2 =5.808,P =0.016). Furthermore,analyzing the effect of VDR Apa Ⅰand Bsm Ⅰ polymorphism combination to the symptoms of SLE,significant difference was observed in SLE patients carrying Aa-bb genotypes involved in serositis ( P =0.003 ),hematological system disorder ( P =0.021 ),and anti-Sm antibodies ( P =0.01 ) compared with other genotypes.ConclusionThere is significant association between Apa Ⅰ and Bsm Ⅰ gene polymorphism Aa-bb genotypes and the incidence of SLE in the Han population of China,and genotype Aa-bb is more involved in serositis,hematological system disorder and has a positive effect on production of antibodies.

The significance of the vitamin D anti vitamin D receptor In the initial systemic lupus erythematosus patients / 中华风湿病学杂志

Objective ① To investigate the level of the vitamin D endocrine system in peripheral relationships with bone mineral density (BMD) and the disease activity respectively. Methods The level of the 25-hydroxylate vitamin D3 (25OHD3) and 1,25-dihydroxyvitamin D3 [1,25(OH)D3] in plasma from 43 SLE patients and 44 normal controls were detected by enzyme linked immunosorbent assay. Vitamin D receptor (VDR) gene expression was determinied by real-time PCR in peripheral blood. BMD measurements in the lumbar spine (L1-4) and left proximal femur (femoral neck) were performed using dual X-ray absorptiometry before treatment. The relationship between the vitamin D endocrine system and the bone mass were studied. We also discussed the relationship between the vitamin D endocrine system and the disease activity. Results The levels of 25OHD3 and 1,25 (OH)2D3 were lower in the initial SLE patients than normal controls (P<0.01, P<0.01). The expressions of VDR gene were significantly increased in initial SLE compared with normal controls (P<0.01). The initial SLE patients had significantly lower BMD values, and higher frequency of osteopenia (35%) at both sites of measurement compared with matched healthy controls (P<0.01). The initial SLE patients were divided into two groups by BMD, abnormal group and normal group. There were no differences in 25OHD3, 1,25 (OH)D3 and VDR gene expression (P0.05). There was no correlation between the vitamin D endocrine system and BMD in initial SLE patients. There was no correlation between the vitamin D endocrine system and the disease activity either. Conclusion Vitamin D endocrine system may play an important role in SLE, but the level of VDR gene is not correlated with BMD and disease activity.

No relationship between single nucleotide polymorphisms of vitamin D receptor gene and bone mass in Tibetan women / 中华内分泌代谢杂志

The single nucleotide polymorphisms (SNP) of vitamin D receptor (VDR) gene were determined by BsmI restriction endonuclease analysis and quantitative ultrasonography indexes (QUI) of calcaneum were measured in Tibetan women. The results showed that there were no statistical differences between QUI of different genetypes and between distribution frequencies of gene types in young women and menopausal women. And it was found that the SNP of VDR by BsmI restriction endonuclease analysis was not relevant to bone mass acquisition and rate of bone mass loss.

The relationship between vitamin D receptor gene polymorphism and primary hyper parathyroidism / 中国普通外科杂志

Objective To investigate the polymorphism of the vitamin D receptor(VDR)gene in relation to primary hyperparathyroidism(PHPT). Method Polymerase chain reaction and restriction analysis were used to determine VDR genotypes in 30 patients with PHPT and in normal subjects.ResultsThe frequency distribution of VDR genotypes in PHPT patients was 0 in BB,1(3.3%) in Bb, 29(96.7%) in bb; and in normal persons was 2(3.3%) in BB, 11(18.4%) in Bb, and 47(78.3%) in bb. There was a significant difference between PHPT patients and normal persons in distribution of BB, Bb, bb genotypes (P≤0.05).ConclusionsThere is some distribution alterations of VDR gene polymorphism in PHPT patients.