To investigate the mutation site of pathogenic gene in patients with hypertrophic cardiomyopathy (HCM) and to analyze the relationship between the genotype and clinical phenotype. Methods: Targeted exon capture sequencing was conducted in a HCM proband for 30 coding exons related HCM gene by all exon amplification and high-throughput sequencing. Furthermore, Sanger sequencing was performed in other family member and in 200 healthy volunteers for verification. The familial investigation included in clinical presentation, physical examination, electrocardiogram and echocardiography. Results: There were 3/6 blood relatives carrying cardiac myosin-binding protein gene MyBPC3 G772A heterozygous mutation, the mutation site was at 258 amino acid of MyBPC3 as glutamic acid (Glu) was substitute to lysine (Lys), such mutation was not found in rest of family member and not in healthy volunteers. The onset of proband and her daughter was rather late, they had palpitation and chest tightness; echocardiography showed interventricular septum basal segment thickening (16-18) mm. Proband was complicating paroxysmal ventricular tachycardia, malignant arrhythmia and heart failure, the maximum pressure gradient of left ventricular outflow was 56 mmHg, which with the high risk for sudden death. Conclusion: Comprehensive gene test has been helpful for clinical stratification, early diagnosis and treatment. MYBPC3 site mutation c.G772A might be the pathogenic mutation in that specific HCM family.

Objective To explore the association between R611H(G/A,rs734312)variation of WFS1 gene and early-onset type 2 diabetes mellitus(T2DM).Methods A total of 181 Chinese patients with early-onset T2DM(T2DM group)and 196 non-diabetic controls(NC group)were enrolled in this study.The rs734312 variation was detected by PCR-direct sequencing.Genotypic and allelic frequencies of rs734312 and clinical variables were compared and analyzed between the two groups.Results Compared with the NC group,the frequencies of AA genotype and A allele in R611H(G→A)variation were significantly elevated in the early-onset T2DM group,AA vs GA+GG(OR 1.720,95%CI 1.100～2.680,P<0.05).A vs G(OR 1.500,95%CI 1.020～2.220,P<0.05).The remarkable differences of frequencies of genotype and allele in rs734312(G/A)were observed between Asians(China,Japan and Korea)and Caucasians(Denmark,Britain,Spain,France and Russia,P<0.01 for each).Compared with AA genotype,fasting and 2 hours postprandial insulin(FIns and 2 hIns)as well as HOMA-β were significantly rise in GG+GA genotype carriers of early-onset T2DM group(P<0.05).Conclusions The a allele of rs734312 in WFS1 may be a risk factor for early-onset T2DM in Chinese population,and the variation might be a potential genetic marker for predicting the islet β-cell dysfunction in early-onset T2DM in Chinese population.

OBJECTIVE：To establish a method for simultaneous determination of the contents of codonopatin ，syringin， atractylenolide Ⅰ，atractylenolide Ⅱ and atractylenolide Ⅲ，and to compare the contents of above 5 components in different varieties and harvesting periods of Codonopsis Radix. METHODS ：HPLC method was used. The column was Inertsil ODS- 3 with mobile phase consisted of acetonitrile-water （gradient elution ）at the flow rate of 0.8 mL/min. The detection wavelengths were 210 nm （codonopatin），220 nm （syringin，atractylenolide Ⅱ ，atractylenolide Ⅲ），276 nm （atractylenolide Ⅰ）. The column temperature was set at 30 ℃ ，and the sample size was 20 μ L. RESULTS：The linear range of codonopatin ，syringin， atractylenolide Ⅰ，atractylenolide Ⅱ and atractylenolide Ⅲ were 44.30-886.00 μg/mL（r＝0.999 7），6.50-130.03 μg/mL（r＝0.999 6）， 4.47-89.46 μg/mL（r＝0.999 5），2.53-50.50 μg/mL（r＝0.999 4），5.64-112.80 μg/mL（r＝0.999 5）；the limits of quantification were 2.446 0，0.168 0，0.248 1，0.065 7，0.099 8 μg/mL，and detection limits were 1.352 0，0.067 2，0.005 4，0.006 3，0.007 3 μ g/mL；RSDs of precision ，stability（24 h），repeatability and durability tests were all less than 2％；the recoveries were 98.87％-100.62％（RSD＝0.73％，n＝6），98.46％-101.54％ （RSD＝1.15％，n＝6），98.32％-101.12％（RSD＝1.19％，n＝ 96.83％-104.16％（RSD＝2.62％，n＝6），97.87％-100.99％ （RSD＝1.07％，n＝6）. The average contents were 33.78-431.82， 0-20.60，0.44-3.68，0-10.83，0.27-73.40 μ g/g. The content of 1271985629@qq.com codonopatin was in descending order was as follows as Codonopsis pilosula ＞C. tangshen ＞C. pilosula Nannf. var. modesta （Nannf.） L. T. Shen ＞ecotypic variety of C.·1677· tangshen. The content of syringin in descending order was C. pilosula ＞C. pilosula Nannf. var. modesta（Nannf.）L. T. Shen ＞C. tangshen，but it was not detected in ecotypic variety of C. tangshen . The content of atractylenolide Ⅰ in descending order was C. pilosula Nannf. var. modesta（Namf.）L. T. Shen ＞ecotypic variety of C. tangshen ＞C. pilosula ＞C. tangshen . The content of atractylenolide Ⅱ in C. pilosula was higher than C. pilosula Nannf. var. modesta（Nannf.）L. T. Shen ，but was no detected in C. tangshen and ecotypic variety of C. tangshen . The content of atractylenolide Ⅲ in descending order was C. pilosula ＞C. pilosula Nannf. var. modesta（Nannf.）L. T. Shen ＞ecotypic variety of C. tangshen ＞C. tangshen . In Codonopsis Radix collected from Jul. to Oct. ，the content of codonopatin was the highest ；the content of atractylenolide Ⅰ was lower in sample collected from Jun. to Oct.；atractylenolide Ⅱ was not detected in sample collected in Aug. ；the contents of atractylenolide Ⅰ and atractylenolide Ⅱ were the lower in sample collected in Sept. ，and syringin and atractylenolide Ⅱ were not detected in some samples. CONCLUSIONS ： The established HPLC method is simple ，accurate，highly sensitive and reproducible. It can be used to simultaneously determine 5 active ingredients contents of Codonopsis Radix ；there are great difference in contents of 5 active ingredients in different varieties and harvesting periods of Codonopsis Radix.