Objective To explore the clinical effect of treatment on facial soft tissue depression by autologous fat granule mixed with adipose-derived stem ceils.Methods A lof of 36 patients with facial soft tissue depression from September 2011 to March 2013 in this clinic were as the research objects.The autologous fat granules were harvested from patients' lateral thigh.The autologous fat granules mixed with adipose-derived stem cells (ADSCs) which were harvested by separating and cleaning were injected into facial soft tissue depression.The standard was based on the subjective satisfaction of patients and the physicians' objective assessment;there were two unrelated doctors to reach an objective assessment of the clinical efficacy based on the comparison of preoperative and postoperative photographs.Results A lof of 36 patients were followed up for 5 16 months,low absorption rate of injec ted fat and significant improvement in shape filling areas were observed,and skin texture,pores,spots and wrinkles were significantly improved.Conclusions Autologous fat granule mixed with AD SCs in the treatment of facial soft tissue depression is a minimally injuried,easily-handled,cheap and safe procedure.It is an ideal treatment of facial soft tissue depression.All the patients have no complications such as infection,induration and fat liquefaction.

Objective To study genotypes in nonsyndromic hearing loss (NSHL ) patients from Guangxi Zhuang Autonomous Region hearing speech rehabilitation center using DNA microarray in combination with Sanger sequencing .Methods Deaf patients received routine physical and otorhinolaryngoloical examinations as well as pure tone autiometry .Brainstem auditory evoked potential test was performed in uncooperative children .Blood samples were obtained from a total of 136 patients ,male 81 ,female 55 ,age from one year five month to seventeen ,having nonsyndromic hearing loss .Genomic DNA was extracted and then 9 hot mutation spots in 4 susceptibility genes were detected by DNA microarray .GJB2 and SLC26A was further detected by Sanger sequencing in the patients with negative results and heterozygotes .Results Among the 136 patients with nonsyndromic hearing loss ,20 cases were positive for GJB2 gene ,SLC26A4 gene or mitochondrial 12SrRNA gene mutations .There were 14 .71% (20/136)patients were positive for hot mutation spots in the deafness related genes ,25% (34/136)patients carried muta‐tions of deafness related genes using DNA microarray in combination with Sanger sequencing .Six SLC26A4 rare mutations (c .259G> T ,c .754C> T ,c .1229C> T ,c .1548_1549insC ,c .1705+5A>G and c .2086C> T) were de‐tected by Sanger sequencing .c .235delC was the most common mutation in GJB2 gene .c .919-2A>G ,c .754C> T and c .1229C> T were the common mutations in SLC26A4 gene .The mutation rate of GJB2 and SLC26A4 was 38 . 24% .and 58 .82% ,respectively .Conclusion Prevalent deafness-associated gene mutations in the nine loci studied were less frequently detected in nonsyndromic hearing loss patients from Guangxi Zhuang Autonomous Region hear‐ing speech rehabilitation center .It can improve the detection rate of deafness gene mutations by using gene microar‐ray in combination with Sanger sequencing .GJB2 and SLC26A4 are the common causative genes .

Objective To investigate the optimal gamma passing rate of intensity-modulated radiotherapy (IMRT) dosimetric verification in the treatment of esophageal cancer using a three-dimensional dose verification system EDoseTM.Methods Twenty five esophageal cancer patients treated by 7-field IMRT were retrospectively reviewed.Measured dose distribution were reconstructed on CT image and evaluated by gamma analysis and DVH metrics using the EDoseTM system.Plans with DVH metrics dose difference ＜ 5％ or with gamma passing ＞ 90％ under 3％/3 mm criteria were accepted.The optimal gamma passing rate for criteria of 5％/3 mm,3％/3 mm,2％/2 mm were investigated by drawing the receiver operating characteristic (ROC) curves and calculating the Youden Index.The sensitivity and specificity of the these optimal thresholds in the plan verification were also analyzed.Results The optimal thresholds for global gamma indices with 5％/3 mm,3％/3 mm,2％/2 mm were 98.66％,94.84％,78.56％,respectively.In the 90％ common threshold,The sensitivity and specificity for common 90％ threshold and optimal threshold under 3％/3 mm criteria were 0.17 vs.0.85 and t 0.84 vs.0.27,respectively.The sensitivity and specificity were 0.89,0.65 and 0.23,0.47 for optimal thresholds under 5％/3 mm and 2％/2 mm criteria,respectively.Conclusions The sensitivity of optimal threshold gamma passing rate improved significantly compared with the common threshold (90％) at 3％/3 mm criteria.,The sensitivity and the specificity were more balanced at the 2％/2 mm criteria compared with those at 3％/3 mm criteria.