Aimin Dang

Peking Union Medical College Hospital, Peping, Beijing, China

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Publications (8)17.03 Total impact

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    ABSTRACT: Increased levels of N-terminal pro-brain natriuretic peptide (NT-proBNP) are associated with cardiovascular morbidity and mortality. Inflammation may also affect levels of NT-proBNP. We investigated the relationship of NT-proBNP with inflammation, disease activity, disease severity, and progression of Takayasu arteritis (TA).
    The Journal of rheumatology. 07/2014;
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    ABSTRACT: Takayasu arteritis (TA) patients with active disease often have elevated serum C-reactive protein (CRP) levels, which usually decline with the disease remission. The serum CRP concentration has been showed to be related to CRP gene polymorphisms in previous studies. The present study aims to investigate the associations of serum level of CRP and CRP polymorphisms with TA. A total of 178 unrelated Chinese Han TA patients and 229 unrelated Chinese Han individuals without documented disease were enrolled in our studies. After a systemic search in the HapMap database, four single-nucleotide polymorphisms (SNPs) were selected, namely, rs1800947, rs3093077, rs1205, and rs2808630. The ligase detection reaction (LDR) was used in genotyping. CRP concentrations were determined using turbidimetric immunoassay. Genotype frequencies and allele frequencies of CRP variations were similar between TA patients and controls. CRP haplotype frequencies in patients were not significantly different from those of controls. No significant association between serum CRP concentrations and genotypes was found. Moreover, no association was found in CRP concentration between patients with types I, II, and III TA or between patients with or without pulmonary involvement. By contrast, serum CRP concentration was directly correlated with disease severity. In conclusion, CRP polymorphisms were not associated with TA susceptibility or serum CRP levels in the Chinese Han population. However, higher CRP level was correlated with a more serious disease status, which implies that CRP possibly contributes to the progression of TA.
    Clinical Rheumatology 06/2014; · 2.04 Impact Factor
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    ABSTRACT: OBJECTIVES: To assess the diagnosis value of 18FDG-PET in estimating disease activity in Takayasu arteritis. METHODS: A complete search of PubMed, EMBASE and The Cochrane Library was finished to July 25, 2012. Sensitivity and specificity as well as pooled estimates of positive and negative likelihood ratios (PLR and NLR) were calculated by Meta-Disc. We also calculated the area under the sROC curve (AUC) and the Q* index. RESULTS: The meta-analysis was finished with 6 study retrieved from the database search. The pooled sensitivity, and specificity with 95% confidence interval were 70.1% (95% CI, 58.6-80.0) and 77.2% (95% CI, 64.2-87.3). The PLR and NLR were 2.313 (95% CI 1.108-4.829) and 0.341 (95% CI 0.142-0.824). The AUC was 0.805(±0.084) and Q* index was 0.7402 (±0.0739). CONCLUSIONS: 18FDG-PET had moderate diagnosis value in assessing TA activity. It may add additional value to the current diagnosis methods.
    Clinical and experimental rheumatology 02/2013; · 2.66 Impact Factor
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    ABSTRACT: Tumor necrosis factor-α (TNF-α) is a multifunctional proinflammatory cytokine that influences the pathogenesis of Takayasu arteritis (TA). There is still no evidence of the relationship between TNF-α gene promoter polymorphisms and TA. We examined whether variations in the TNF-α promoter region may lead to TA susceptibility and disease progression. Five TNF-α gene promoter polymorphisms (-238G/A, -308G/A, -857C/T, -863C/A, and -1031C/T) were analyzed in 110 Chinese Han patients with TA, with a control group of 362 unrelated healthy individuals. Genotypes of TNF-α gene promoter polymorphisms were identified by direct sequencing. TNF-α plasma concentrations were determined by ELISA. Our results indicated that the frequency of the -863A allele was significantly lower in the patients with TA than in the controls (18.2% vs 25.7%; p = 0.011), but the significance was lost after Bonferroni correction (p(c) = 0.055). The frequency of -863CA/AA genotypes was significantly lower in the patients with refractory TA than in those with the 863CC genotype (22.4% vs 44.2%; p(c) < 0.01). The frequency of the GGCCT haplotype was significantly higher in patients than in the controls, while the frequencies of GGCAT and GGCCC haplotypes were significantly lower in patients than in controls. The plasma TNF-α concentrations were significantly lower in the subjects carrying the -863A allele than in those without. Patients with active TA had a significant increase in plasma levels of TNF-α compared with remission patients and the control group. Polymorphisms of the TNF-α promoter are not associated with TA in the Chinese Han population. The A allele of the -863C/A polymorphism is associated with decreased TNF-α expression, which might affect medical treatment.
    The Journal of Rheumatology 10/2011; 38(12):2602-7. · 3.26 Impact Factor
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    ABSTRACT: Previous case-control studies have suggested that the variations of the oxidized-lipoprotein receptor 1 (OLR1) gene (G501C, 3'-UTR-C188T) are associated with coronary artery disease (CAD). However, other studies have not confirmed this relationship. The objective of this study was to assess the relationship between OLR1 variations and CAD. We conducted a meta-analysis. Databases, including PubMed, EMbase, Chinese Biological Medical Literature Database (CBM), and China National Knowledge Infrastructure (CNKI), were searched to obtain genetic association studies. Data were extracted by two authors, and pooled odds ratios (OR) with 95% CI were calculated. The meta-analysis included 8 studies with 4,963 cases and 14,864 controls for 3'-UTR-C188T and 9 studies with 5,660 cases and 15,405 controls for G501C. The pooled OR for 3'-UTR-188T was 1.29 (95% CI 1.05-1.58, p = 0.02) compared to the C allele in the dominant model, and it was 1.38 (95% CI 1.09-1.74, p = 0.007) in the recessive model. The pooled OR for 501C was 0.79 (95% CI 0.57-1.10, p = 0.16) compared to the G allele in the dominant model, and it was 0.86 (95% CI 0.71-1.04, p = 0.12) in the recessive model. No publication bias was found in the present meta-analysis. The synthesis of available evidence supports that OLR1 3'-UTR-188T increases the susceptibility to CAD. However, G501C is not associated with CAD.
    Cardiology 09/2011; 119(2):90-5. · 1.52 Impact Factor
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    ABSTRACT: The role of the lipoprotein-associated phospholipase A(2) gene (PLA2G7) in atherosclerosis remains controversial. We investigated the frequency of single-nucleotide polymorphisms (SNPs) of PLA2G7 (rs16874954 and rs1051931) and their association with coronary artery disease (CAD) in a cohort of CAD patients (n= 806) and age-matched healthy controls (n= 482) in the Chinese Han population. The VF and FF genotype of rs16874954 was significantly more frequent in the CAD patients (13.5%) than in the controls (9.3%, P= 0.024). The association remained after adjustment for age, gender, body mass index, smoking status, history of diabetes, positive family history of CAD, high-density lipoprotein cholesterol, and triglyceride (OR = 1.922; 95% CI [1.146-3.224]; P= 0.013). There was no significant difference in the frequency of any genotype of rs1051931 between the two groups. However, the frequency of the allele V379 was significantly greater in CAD patients with a history of myocardial infarction (MI) than in those without a history of MI (18.7% and 14.8%, P= 0.038). We conclude that there is significant association between the rs16874954 mutation and CAD in the Chinese Han population. The expression of rs1051931 variant in CAD patients may entail increased risk of MI.
    Annals of Human Genetics 09/2011; 75(5):605-11. · 2.22 Impact Factor
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    ABSTRACT: Takayasu arteritis (TA) is a chronic large-vessel vasculitis of unknown etiology. Human leukocyte antigen (HLA) alleles play an important role in the development of TA. The association between HLA-DPB1 and TA in Chinese Han patients remains unclear. We examined the genotypes of 72 Chinese patients with TA and 180 healthy unrelated individuals who did not have any history of chronic disease. HLA-DPB1 genotypes were determined using polymerase chain reaction sequence-specific primer (PCR-SSP). The frequencies of DPB1*09 and DPB1*1701 among the TA patients were significant higher than among the controls. The mean age of the onset of TA in patients with DPB1*1701 alleles was significant earlier than the DPB1*1701 negative patients. Our results indicated that the HLA-DPB1*09 and DPB1*1701 alleles might increase the susceptibility to TA, and the individuals possessing DPB1*1701 had the earlier onset age of the disease. Further studies on the mechanism underlying are warranted.
    Human immunology 05/2011; 72(10):893-6. · 2.55 Impact Factor
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    ABSTRACT: Aortoarteritis is a chronic inflammatory disease mainly affecting the aorta and its major branches. Recent immunogenetic studies indicate that certain human leucocyte antigen (HLA) alleles are significantly associated with aortoarteritis in several populations. The purpose of the present study was to investigate the relationship between the HLA-DRB1 alleles and aortoarteritis in a Chinese Han population. HLA-DRB1 genotypes were identified by PCR-SSP and PCR-RFLP in 84 Chinese patients with aortoarteritis and 102 healthy Chinese controls. It was found that the HLA-DRB1*04 allele (38.1% in patients vs. 15.7% in controls, p<0.001, relative risk (RR)=2.43) and the HLA-DRB1*07 allele (47.6% vs. 10.8%, p<0.001, RR = 4.42) were significantly associated with aortoarteritis. Furthermore, there was no significant difference in the frequency of the DRB1*0405 subtype between the patient and control groups. Thus the susceptibility to aortoarteritis in this Chinese Han population was closely related with the HLA-DRB1*04 and DRB1*07 alleles. Thus individuals with the HLA-DRB1*04 and DRB1*07 alleles may be at higher risk for developing aortoarteritis.
    Hypertension Research 08/2002; 25(4):631-4. · 2.79 Impact Factor