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Objective To realize the automated bone age assessment by applying deep learning to digital radiography(DR)image recognition of left wrist joint in Uyghur teenagers, and explore its practical ap-plication value in forensic medicine bone age assessment. Methods The X-ray films of left wrist joint after pretreatment, which were taken from 245 male and 227 female Uyghur nationality teenagers in Uygur Autonomous Region aged from 13.0 to 19.0 years old, were chosen as subjects. And AlexNet was as a regression model of image recognition. From the total samples above, 60% of male and fe-male DR images of left wrist joint were selected as net train set, and 10% of samples were selected as validation set. As test set, the rest 30%were used to obtain the image recognition accuracy with an error range in ±1.0 and ±0.7 age respectively, compared to the real age. Results The modelling results of deep learning algorithm showed that when the error range was in ±1.0 and ±0.7 age respectively, the accuracy of the net train set was 81.4% and 75.6% in male, and 80.5% and 74.8% in female, respectively. When the error range was in ±1.0 and ±0.7 age respectively, the accuracy of the test set was 79.5% and 71.2% in male, and 79.4% and 66.2% in female, respectively. Conclusion The combination of bone age research on teenagers' left wrist joint and deep learning, which has high accuracy and good feasi-bility, can be the research basis of bone age automatic assessment system for the rest joints of body.
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Objective To explore the expression levels of serum nitric oxide(NO)and nitric oxide synthase(NOS) between Han and Uyghur nationality patients with anti-tuberculosis drug-induced liver injury(ATDLI). Methods Patients with confirmed ATDLI in Chest Hospital of Xinjiang Uyghur Autonomous Region and First Affiliated Hos-pital of the Medical College of Shihezi University between January 2015 and May 2016 were chosen and divided into Han group and Uyghur group.By detecting the expression levels of NO and NOS in serum of ATDLI patients,ex-pression levels of serum NO and NOS in ATDLI patients of different gender,body mass index(BMI),and liver function injury were compared.Results 100 ATDLI patients in Han group and 135 in Uyghur group were recruited in study. Expression levels of NO and TNOS in Han group were(134.24±27.60)μmol/L and(33.01 ±4.23)U/mL respectively,in Uyghur groups were(97.10±17.41)μmol/L and(27.41 ±3.95)U/mL respectively,serum levels of NO,TNOS,iNOS,and eNOS in Han patients were all higher than Uyghur patients,difference was statistically significant(P<0.01). In Han ATDLI group,serum levels of NO and TNOS in male patients were both higher than female patients(P<0.05);in Uyghur ATDLI group,serum levels of NO,TNOS,and iNOS in male patients were all higher than female patients(P<0.01). The expression levels of serum NO,TNOS,and iNOS of Han group were all higher than the same gender in Uyghur group(P<0.001),difference in levels of NO and TNOS among different body mass index(BMI)groups in Han and Uyghur patients were both statistically significant(P<0.01). In both group,levels of NO and TNOS in obese patients were both higher than lean patients and normal weight patients(P<0.05). The correlation analysis showed that NO levels of Han and Uyghur groups were both positively correlated with BMI(r=0.444,0.677,respectively,P<0.01). There were significant differences in serum NO and NOS levels between Han and Uyghur patients with different degrees of liver injury(P<0.05);NO and NOS levels in both groups with mild liver injury were both lower than those with moderate and severe injury (P<0.001).Conclusion Serum NO and NOS levels between ATDLI Han group and Uyghur group are different,serum NO level is related to BMI,and it can increase with the degree of liver injury.
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Objective@#To explore the risk factors of diabetic foot ulcer (DFU) in diabetic patients of Uyghur nationality and Han nationality in the Xinjiang Uygur Autonomous Region.@*Methods@#Clinical data of 640 diabetic patients admitted to our ward from January 2015 to November 2016, conforming to the study criteria, were retrospectively analyzed. Patients were divided into DFU group (n=403) and non-DFU group (n=237) according to whether DFU occurred or not. The data of gender, age, nationality, body mass index (BMI), smoking, drinking, binge eating, triglyceride (TG), total cholesterol (TC), and high-density lipoprotein (HDL) of patients between two groups were compared with chi-square test and t test. Indexes with statistically significant differences between two groups were selected, and they were processed with non-conditional multivariate logistic regression analysis to screen the independent risk factors of DFU. The possible risk factors of DFU of patients of Uyghur nationality and Han nationality were further processed with non-conditional multivariate logistic regression analysis respectively to screen the independent risk factors of DFU of patients of Uyghur nationality and Han nationality.@*Results@#(1) There were no statistically significant differences in gender, age, TC, and HDL of patients between two groups (with χ2=0.149, t values respectively 1.163, 1.033, and 1.026, P values above 0.05). There were statistically significant differences in nationality, BMI, smoking, drinking, binge eating, and TG of patients between two groups (with χ2 values from 4.778 to 13.694, t values respectively 4.703 and 4.237, P<0.05 or P<0.01). (2) Nationality, BMI, smoking, drinking, binge eating, and TG were the independent risk factors of DFU(with odds ratios respectively 1.488, 1.527, 1.736, 1.738, 1.382, and 1.648, 95% confidence intervals respectively 1.315-3.175, 1.488-4.393, 1.834-4.675, 1.474-2.695, 1.342-4.678, and 1.105-6.747, P values below 0.05). (3) Smoking, drinking, binge eating, and TG were the independent risk factors of DFU in diabetic patients of Uyghur nationality (with odds ratios respectively 1.673, 1.387, 1.328, and 1.486, 95% confidence intervals respectively 1.384-1.765, 1.414-1.659, 1.423-1.687, and 1.150-1.670, P values below 0.05). BMI, smoking, and drinking were the independent risk factors of DFU in diabetic patients of Han nationality (with odds ratios respectively 2.442, 1.604, and 1.251, 95% confidence intervals respectively 2.223-2.699, 1.268-2.028, and 1.164-1.344, P<0.05 or P<0.01).@*Conclusions@#Smoking, drinking, binge eating, and TG were the independent risk factors of DFU in diabetic patients of Uyghur nationality. BMI, smoking, and drinking were the independent risk factors of DFU in diabetic patients of Han nationality.
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Background Exfoliation syndrome is a systemic disease with abnormal accumulation of extracellular matrix.Oxidative stress and imbalance between matrix metalloproteinases(MMPs) and tissue inhibitor of matrix metalloproteinases(TIMPs)may play an important role in the pathogenesis of exfoliation syndrome.Researches showed that the incidence of exfoliation syndrome is higher in Uyghur nationality than that in Han nationality.However,whether the imbalance of serum MMPs and TIMPs is associated with pathogenesis of different ethnic groups is unclear.Objective The aim of the study was to discuss the change of serum MMP-9 and TIMP-2 in Uyghur patients.Methods This study protocol was approved by Ethic Committee of Xinjiang Medical University and followed Declaration of Helsinki.A prospective cohort study was performed.Forty Uyghur nationality (46 eyes) with exfoliation syndrome were collected from March 2012 to May 2013 in Affiliated First Hospital of Xinjiang Medical University and First People Hospital of Kashi.Forty cases(40 eyes)age-and gender-matched normal volunteers were included in the same duration.The peripheral blood was collected under the informed consent.Serum MMP-9 and TIMP-2 levels were detected by ELISA,and the results between the two groups were compared using independent samples t test.Results Slit-lamp examination found that part of pigmentation was depigmented and white dandrufflike substance attached in the pupil margin in all the patients,and stripping white dandruff-like substance was deposited in the front surface of the lens capsule which distributed in 3 zones.The pupils were disk-shaped pupil,and the surrounding area was the ring granular and the middle was transparent area without ablative material after dilation.Serum MMP-9 levels were (57.88±18.63)μg/L in the exfoliation syndrome group and (9.35±2.78)μg/L in the normal control group;serum TIMP-2 levels were (17.36±4.66) μg/L in the exfoliation syndrome group and (25.73±3.59) μg/L in the control group.The ratios of MMP-9/TIMP-2 were 3.57± 1.45 in the exfoliation syndrome group and 0.37±0.11 in the control group,with statistically significant differences in serum MMP-9 and TIMP-2 levels as well as ratio of MMP-9/TIMP-2 between the two groups(t=11.52,-6.36,9.87,all at P=0.00).Conclusions The upregulation of serum MMP-9 and downregulation of serum TIMP-2 are found in Uyghur patients with exfoliation syndrome.It is verified that the imbalance of serum MMP-9 and TIMP-2 contributes to the pathogenesis of exfoliation syndrome in Uyghur patients.
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Objective To analyze the differences in urinary stone components between Uyghur and Han patients with urolithiasis in Xinjiang,and to explore the related factors contributing to the observed differences.Methods The data of urinary stone compo-nents in 317 adult patients with urolithiasis (152 cases of Uyghur nationality and 165 cases of Han nationality)admitted to Xinjiang Uygur Autonomous Region People′s Hospital from June 2009 to June 2011 were retrospectively analyzed.The urinary stone compo-nents were analyzed by the infrared spectroscopy.Results There were significant differences in thestone component proportions of calcium oxalate monohydrate (COD),COD+carbapatite (CA)and uric acid (UA)between Uyghur and Han patients(P <0.05). Conclusion The characteristics of the urinary stone comppnents have significant differences between Uyghur and Han patients with urolithiasis,which may be related with ethnicity and the different dietary habits.
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Objective To determine vascular endothelial growth factor(VEGF)-460 gene polymorphism in Uyghurs and its relationship to urolithiasis in south Xinjiang. Methods Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP),gene sequencing and genetic analysis methods were used in 200 urolithiasis patients of Uyghurs, and 200 healthy Uyghurs. Results The distribution of genotype and allele had no significant difference between urolithiasis patients and normal controls (P＞0. 05). The frequencies for the CC,TT and CT genotypes in patients with urolithiasis and normal controls were 1.5 %, 29.0 %, 69.5 % and 0. 5 %, 27.5 %, 72.0 %, respectively. The frequencies for C and T allele were 36.2%,63.7% and 36.9% ,63.1%, respectively. Conclusions The results of VEGF-460 gene polymorphisms indicate no significant relationship between patients with turolithiasis and normal controls in Uyghurs in south Xinjiang,which may not be urolithiasis susceptibility genetic locus.