How to Build CHD@ZJU

CHD related Articles were retrieved from Pubmed, by entering keywords "coronary heart disease" and constrict the publish date from 2000/1/1 to now (2013/1/23). As a result, totally 115898 articles were found and their abstracts were downloaded for text mining. Since some articles didn't contain abstracts, only 88396 abstracts remained.
The text-mining process to get CHD related genes could be divided in to 5 following steps:

  • 1) Extracting all keywords from abstracts and ignoring those keywords start with numbers. 101402 keywords were extracted.

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  • 2) Input these keywords into Gene library in ArrayTrack and find possible related genes. 4674 genes were then found.

  • 3) Put these 4674 genes again into pubmed abstracts to find related aticles. Only genes which offical name or there keyword description (such as prolactin for gene PRL) could be found in the abstract would be remained. As a result, 1247 genes were remained.

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  • 4) Manually examined on the 1247 genes to validate it was acutally related to CHD. Some genes would be filtered if it represents other meanings (such as gene CAD, Entrez ID:790, carbamoyl-phosphate synthetase 2, is mostly meant coronary arterial disease in articles). 681 genes were then validated with at least one reference.

  • 5) All genes was compared with 1078 CHD genes in RGD database, and 370 genes were overlapped. These 370 genes were labels as "RGD_Supported" and the other 293 genes were labels as "REFERED". All 663 genes had supported references in CHD@ZJU which were examined by step 4.

    • How To contact Us

    Collaboration Information: Prof. Xiaohui Fan (fanxh@zju.edu.cn)

    Website using assistance : Leihong Wu (11019004@zju.edu.cn)




    The relationship between the insertion/deletion polymorphism of the ACE gene and hypertension in Iranian patients with type 2 diabetes.
  • Author:"Nakhjavani, Manouchehr;Esfahanian, Fatemeh;Jahanshahi, Alireza;Esteghamati, Alireza;Nikzamir, Abdol Rahim;Rashidi, Armin;Zahraei, Mahin"

  • Published Year:2007

  • Journal:"Nephrology, dialysis, transplantation : official publication of the European"

  • Abstract:"BACKGROUND: Observations on the association between the ACE gene polymorphism and hypertension have been inconsistent, which might be due to ethnic and geographical variations. Moreover, the relationship between insertion/deletion (I/D) polymorphism and hypertension in the diabetic population has not been sufficiently studied. The aim of this study was to evaluate for the first time the possible association between I/D polymorphism and hypertension in an Iranian diabetic adult population. METHODS: A total of 82 consecutive patients with type 2 diabetes and hypertension (Group A) and 87 patients with type 2 diabetes but without hypertension (Group B) were included. Patients who had a history of hypertension before the onset of diabetes and those with findings suggesting secondary hypertension were excluded. The following variables were determined for each patient: age, sex, body mass index (BMI), diabetes duration and the drugs used, history of coronary artery disease and its complications, blood pressure (systolic and diastolic), fasting blood sugar (FBS), haemoglobin A1c (HbA1c), total cholesterol (Chol), low-density lipoproteins (LDL), high-density lipoproteins (HDL), triglycerides (TG), plasma creatinine (Crt) and 24 h urine albumin excretion. Polymerase chain reaction (PCR) was used to detect the I/D alleles. Univariate (chi-squared and t-test) and multivariate (multivariate binary logistic regression with adjusted odds ratios) analyses were applied to determine the association between I/D polymorphism (with genotype II as reference) and hypertension. P<0.05 was considered statistically significant. RESULTS: In univariate analysis, the groups were statistically similar in all variables except for diabetes duration (156.05+/-73.54 months in Group A vs 121.74+/-65.53 months in Group B; P=0.002), Crt (1.04+/-0.25 mg/dl in Group A vs 0.93+/-0.23 mg/dl in Group B; P=0.003), albuminuria (486.25+/-484.60 mg/d in Group A vs 316.50+/-459.56 mg/d in Group B; P=0.021) and the frequency of DD genotype (27 cases in Group A vs 11 cases in Group B; P=0.026). Multivariate logistic regression (using age, sex and BMI as clinically significant variables and diabetes duration, Crt, albuminuria and genotype as statistically significant variables) was then used to determine independent associations and adjusted odds ratios (OR). The DD genotype was the strongest independent predictor of hypertension [P=0.029, OR=3.122, 95% confidence interval (CI)=1.127-8.647], followed by log (albuminuria) (P=0.042, OR=1.183, 95% CI=1.006-1.391). Considering albuminuria as a categorical variable did not change the results significantly. CONCLUSION: The DD polymorphism in the ACE gene is independently associated with hypertension in the diabetic population."

  • 10.1093/ndt/gfm252

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