One hundred fifty-three patients with hypoxia of both sexes,underwent hip arthroplasty from January 2012 to January 2014,aged 65-97 yr,weighing 41-80 kg,living in areas at altitude above 1800 m,of American Society of Anesthesiologists physical status Ⅱ-Ⅵ,were selected.The hemoglobin (Hb) at 3-4 days after operation was collected,and the patients were divided into 3 groups depending on whether or not postoperative anemia occurred:no anemia group (Hb＞ 110 g/L);mild anemia group (90 g/L≤ Hb≤ 110 g/L);moderate anemia group (70 g/L ≤ H b＜ 90 g/L).The 36-item Short-Form Health Survey score and Harris Hip Score at 28 days after operation were collected.There was no significant difference between the three groups in the postoperative 36-item Short-Form Health Survey score and Harris Hip Score (P＞0.05).Postoperative mild and moderate anemia did not affect the short-term outcome after hip arthroplasty in elderly patients in high-altitude regions.

Objective To investigate the ED50 and ED9 5 of subarachnoid 0.375% bupivacaine in elderly patients undergoing elective total hip arthroplasty (THA ) in high altitude area. Methods Twenty-three elderly patients,aged 73-99 years old,ASA Ⅱ or Ⅲ,selected for total hip ar-throplasty (THA)under combined spinal-epidural (CSE)anesthesia were enrolled in this study and predose of 3.0 mg,0.375% (m/v)bupivacaine administered in subarachnoid,following dosage in-creased by ratio of 0.8.Calculate the ED50 and ED9 5 of subarachnoid 0.375% bupivacaine and 95%CI.Results Twenty of 23 underwent the test completely.The ED50 (95%CI)and ED9 5 (95%CI)of 0.375% (m/v)bupivacaine were 4.81 mg (3.98-5.81 )and 7.29 mg (6.03-8.81 ),respectively. Conclusion Subarachnoid 0.375% bupivacaine (7.5 mg)can be used effectively and safely in elderly patients undergoing total hip arthroplasty in high altitudes area.

Objective To investigate the relationship between 9p21 single nucleotide polymorphism (SNP) and myocardial infarction(MI) in Yunnan Yi nationality. Methods One hundred and ten patients with MI and 110 controls were enrolled. DNA sequencing was used to detect 9p21 gene locus and SNP typing and analysis. Results Hardy-Weinberg equilibrium was found in 9 sites of chromosome 9p21 in myocardial infarction group and control group.The frequency of rs1333049 GG genotype was 30.91% and 18.18% in case group and control group respectively, G The frequencies of rs2383206 GG genotype were 31.82% and 18.18%, respectively, and the frequencies of G allele were 55.3% and 41.1%, respectively. There were significant differences between the two groups 58.3% and 44.9%, The difference between the two groups was statistically significant(P<0.05). Conclusion This study demonstrates an association of rs1333049 polymorphism locus on chromosome 9p21 with risk for MI in in Yunnan Yi nationality.

【Objective】 To investigate the effects of miR-29b-3p on congenital heart disease and its mechanism. 【Methods】 The expression level of miR-29b-3p in serum from CHD patients and normal individuals， and in cells was detected by RT-qPCR. Dimethylsulfoxide （DMSO） was used to induce P19 cells to differentiate into cardiomyocytes. Western blot was used to measure the expression levels of cardiogenesis-associated genes， and phosphatase and tensin homolog （PTEN） level in cells. The proliferation and migration of cardiomyocytes were measured by CCK-8 and Transwell assay， respectively. Dual-luciferase gene reporter assay was used to verify the targeted relationship between miR-29b-3p and PTEN. 【Results】 Compared with that of normal individuals， the expression of miR-29b-3p in CHD patients was decreased. During differentiation， miR-29b-3p level was higher at late stage than that at early stage. Downregulated miR-29b-3p inhibited the differentiation of P19 cells into cardiomyocytes， and inhibited cell proliferation and migration. miR-29b-3p targeted PTEN. The increased PTEN level induced by miR-29b-3p knockdown inhibited the differentiation of P19 cells， and proliferation and migration of cardiomyocytes. 【Conclusion】 miR-29b-3p was downregulated in the serum of CHD patients. The downregulation of miR-29b-3p inhibited the differentiation of P19 cells， proliferation and migration of cardiomyocytes by targeting and regulating PTEN.