The peroxisome proliferator-activated receptor gamma(peroxisome proliferator-activated receptor gamma,coactivator 1 beta,PPARGC1B)gene is an intranuclear receptor transcription fac-tor responsible for regulating the expression of target genes.To comprehend the characteristics and mutations of the PPARGC1B gene within the Sichuan yak population,the SNP loci of the PPARGC1B gene were identified through direct sequencing of PCR products.Additionally,the cod-ing region of the PPARGC1B gene was obtained via PCR amplification and sequencing.Bioinforma-tics analyses were conducted to predict protein-coding and mRNA secondary structure.This study identified four exon SNP mutation sites(E9-189A→C,E9-387G→A,E9-542C→T,and E9-554T→C)based on the single nucleotide polymorphism analysis of the PPARGC1B gene in Sichuan yaks.Notably,the E9-387G→A and E9-554T→C loci exhibited significant correlations with shear force and backfat thickness in Sichuan yaks.Subsequently,bioinformatics analysis of the four mutation sites revealed that the PPARGC1B protein is an acidic,unstable,non-transmembrane,and non-secretory hydrophilic protein with a coiled helix structure.It lacks a signal peptide and transmembrane region,predominantly functions in the nucleus,and features 106 phosphorylation sites,one glycosylation site,and one conserved RRM structure.The secondary structure comprises mainly α-helix and random coils.Although the protein structure of the PPARGC1B gene remained unchanged post-mutation,there were significant differences in mRNA secondary structure.These findings suggest that the polymorphic loci of the PPARGC1B gene in Sichuan yaks could serve as a theoretical basis for enhancing meat quality traits through molecular biological methods,presen-ting practical applications in breeding.

Objective:To investigate the distribution characteristics of cognition-related lifestyles of elderly in communities and explore the integrated effects on early cognitive decline.Methods:The participants were from the Project of Prevention and Intervention of Neurodegenerative Disease for Elderly in China. A total of 2 537 older adults aged ≥60 years without dementia in the 2015 baseline survey and the 2017 follow-up survey were included. The information about their cognition-related lifestyles, including physical exercise, social interaction, leisure activity, sleep quality, smoking status, and alcohol consumption, were collected through questionnaire survey and the integrated scores were calculated. Multivariate logistic regression analysis was used to assess the association between integrated cognition-related lifestyle score and early cognitive decline.Results:In the 2 537 older adults surveyed, 28.7% had score of 5-6, while only 4.8% had high scores for all 6 healthy lifestyles. Significant differences in healthy lifestyle factor distributions were observed between men and women. Multivariate logistic regression model showed that the risks for early cognitive decline in the older adults who had lifestyle score of 4 and 5-6 were lower than that in those with lifestyle score of 0-3 ( OR=0.683, 95% CI: 0.457-1.019; OR=0.623, 95% CI: 0.398-0.976; trend P=0.030). In the women, the risks for early cognitive decline was lower in groups with score of 4 and 5-6 than in group with score of 0-3 ( OR=0.491, 95% CI: 0.297-0.812; OR=0.556, 95% CI: 0.332-0.929; trend P=0.024). Conclusion:Cognition-related healthy lifestyles are associated with significantly lower risk for early cognitive decline in the elderly, especially in women.

【Objective】 To explore the correlation between serum trace elements and systolic and diastolic blood pressure in healthy population and patients with hypertension. 【Methods】 The health examination data of the subjects from our hospital from September 2018 to May 2021 were selected. They consisted of 3430 healthy people with no history of chronic diseases and 216 patients with hypertension previously diagnosed. We measured the levels of serum zinc， iron， calcium， magnesium， lead， copper and cadmium and analyzed their correlation with systolic blood pressure （SBP） and diastolic blood pressure （DBP）. 【Results】 The incidence of low zinc （9.5%） and hypomagnesemia （1.8%） was relatively low， while hypomagnesemia （27.8%） was relatively common in the healthy population. Logistic regression analysis showed that age， BMI and serum albumin were associated with increased SBP and DBP. Fasting blood glucose （OR=1.095， 95% CI： 1.007-1.191） and blood lead （OR=1.006， 95% CI： 1.000-1.012） were risk factors for SBP. Serum total cholesterol （OR=1.244， 95% CI： 1.095-1.412）， serum iron （OR=1.275， 95% CI： 1.114-1.460） and blood lead （OR=1.010， 95% CI： 1.004-1.015） were risk factors， while serum magnesium （OR=0.488， 95% CI： 0.266-0.894） acted as a protective factor for DBP. After adjusting for age， gender， BMI， waist-hip ratio， and smoking history， there was no significant difference in serum trace element levels between the hypertension and healthy control groups. 【Conclusion】 SBP is correlated with serum lead， while DBP is positively correlated with serum iron and lead， but negatively correlated with serum magnesium in normal healthy population. There was no significant difference in serum trace element content between hypertensive patients and healthy control group， but the conclusion still needs to be further verified.

Objective:To design and implement a plan data archiving system (PDAS) for radiotherapy treatment, in order to improve the efficiency of plan archiving and avoid plan data loss.Methods:The original plan file in the treatment planning system (TPS) was read and parsed, and the record and verification (R&V) system database was accessed to obtain the patient′s treatment record. PDAS processed all parameters involved in the plan archiving and saved the structured data into a local database. PDAS included two major modules, the plan archiving module and the plan loss detection module. The former could be divided into four parts, data sorting, data compression, archiving check and plan recovery. For different modules, we designed corresponding logic rules and wrote programs to realize the system. Compared with the plan data of manual archiving, the clinical application effect of PDAS was evaluated.Results:Each module of PDAS was developed and implemented. During 31 months of clinical application, the system was stable, and 17 614 plans were archived. Compared with manual archiving, PDAS improved the archiving efficiency significantly and reduced the plan loss rate from 0.004 or so to 0.Conclusions:PDAS can improve the efficiency of plan archiving and ensure the security and integrity of plan data.

OBJECTIVE: To explore the clinical features and genetic diagnosis of two cases with rare diseases and X chromosome abnormalities. METHODS: Multiple ligation-dependent probe amplification (MLPA) and karyotype analysis were carried out on an 8-year-old girl who was diagnosed with Duchenne muscular dystrophy. Karyotype analysis and PCR assay for SRY and AZF genes were carried out for a-2-month-old male infant with short penis. RESULTS: The girl, who featured short stature and cubitus valgus, was diagnosed as Turner syndrome with a karyotype of 46,X,i(Xq). The male infant was detected with a karyotype of 45,X, with presence of SRY gene but absence of AZF gene. CONCLUSION Both cases may be associated with abnormalities of X chromosome. Genetic testing can facilitate early diagnosis and clinical intervention for such patients.
Chromosomes, Human, X ; Humans ; Infant ; Karyotyping ; Male ; Muscular Dystrophy, Duchenne ; genetics ; Rare Diseases ; Turner Syndrome ; genetics

Objective To understand the effects of salt iodine content adjustment on iodine nutritional status of residents in Fujian Province.Methods In 2009 (before the adjustment) and 2014 (after the adjustment),cross-sectional research methods and stratified cluster sampling methods were adopted,17 and 19 survey sites (residential committees and villages) were selected,respectively.At each survey site,20 adults,30 pregnant women,30 lactating women and 50 children (8-10 years old) were selected in 2009;50 adults,50 pregnant women,50 lactating women and 100 children (8-10 years old) were selected in 2014.Random urine samples in one day were collected,and the urinary iodine content was measured by "the Arsenic and Cerium Catalyzed Spectrophotometric Method" (WS/T 107-2006).The results of before and after the adjustment were compared and iodine nutrition was evaluated.Results Before and after adjustment of salt iodine content,the urinary iodine median of children and adults was 208.7,202.8,163.0 and 157.6 μg/L,respectively,and after the adjustment,the iodine nutrition was at the appropriate level (100-199 μg/L).The urinary iodine median of lactating women was 128.9 and 107.4 μg/L before and after the adjustment,iodine nutrition was at an appropriate level (≥ 100 μg/L).The urinary iodine median of pregnant women was 149.2 and 124.0 μg/L before and after the adjustment,which were deficient (＜ 150 μg/L).Conclusion After down-regulating the iodized salt content,the iodine nutrition of the general residents in Fujian Province is basically at an appropriate level,and pregnant women have different levels of iodine deficiency.

Objective To study the clinical application effect of X-ray computed tomography (DR) and spiral CT in the diagnosis of emergency thoracic and abdominal trauma. Methods A total of 174 patients with emergency thoracic and abdominal trauma admitted in our hospital from November 19, 2016 to November 19, 2017 were enrolled in this study. All patients underwent DR and spiral CT examinations. The pathological diagnosis coincidence rate between the two diagnostic methods and the satisfaction with the diagnostic methods between the two groups was compared. Results In terms of pathological diagnosis, the coincidence rate of spiral CT in subcutaneous emphysema, rib fractures, scapular fractures, clavicle fractures, pulmonary contusion, pleural effusion, pneumothorax, atelectasis, mediastinal emphysema, liver injury, spleen injury, kidney injury, pancreas injury, celiac hemorrhage, mesentery laceration and diaphragmatic injury was 100. 00％. Except for pulmonary contusion, mediastinal emphysema, hematoma and kidney injury and pancreatic injury, the pathological diagnosis coincidence rate of spiral CT in the other chest trauma was higher than that of DR diagnosis, and the difference was statistically significant (P＜0. 05). The patients' satisfaction score of spiral CT diag nosis was significantly higher than that of DR diagnosis(P＜0. 05). Conclusion The spiral CT in the diagnosis of emer gency thoracic and abdomen trauma is better, which can improve the clinical diagnosis of coincidence rate, and is worthy of further recommendation.

Objective To analyze the diagnostic value of multi-slice spiral CTin patients with emergency chest pain. Methods 81 patients with chest pain admitted in the Department of Emergency in our hospital from October 27, 2016 to October 27, 2017 were investigated. All patients underwent multi-slice spiral CTexamination. The examination results of multi-slice spiral CTexamination were compared with those of conventional coronary angiography. At the same time, the patient's heart rate and satisfaction during different examinations was compared. Results There were 64 patients with coronary artery stenosis, 9 patients with aortic dissection, 8 patients with pulmonary embolism were detected by multi-slice spiral CT, accounting for 79. 01％, 11. 11％ and 9. 88％ respectively. There were 64 cases of coronary artery stenosis, 10 cases of aortic dissection and 7 cases of pulmonary embolism detected by routine coronary angiography examination, accounting for 79. 01％, 12. 35％ and 8. 64％, respectively. There was no significant difference between the results of the two examination methods (P＞0. 05). There was no significant difference in the level of heart rate between patients with multi-slice spiral CTand those with conventional coronary angiography(P＞0. 05). The patient's satisfaction with multi-slice spiral CTwas 96. 30％, which was significantly higher (P＜0. 05). Conclusion For patients with emergency chest pain, the detection of multi-slice spiral CTis similar to that of routine coronary angiography in the cause of the disease, and has little influence on the patient's heart rate, which is an ideal method for clinical diagnosis of chest pain.

Objective To investigate the main risk factors induced to coronary artery stenosis in order to provide evidence for prevention of coronary heart disease in flying personnel. Methods By analyzing the computed tomography angiography (CTA) ,44 flying personnel clinically suspected as coronary heart disease were divided into coronary artery stenosis group and normal coronary artery group.The comparisons on age ,flying aircraft type ,flying duties ,body mass index (BMI) ,flying hours ,night flying hours , blood lipid level , serum glucose level , histories of hypertension and smoking were conducted between two groups.The Logistic multivariate regression analysis was used for determining risk factors. Results The CTA results indicated 25 cases (56.82%) of coronary artery stenosis and 19 normal cases.The univariate analysis showed the statistical differences on age , flight hours , night flight hours , and the incidences of hypercholesterolemia , hyper low-density lipoprotein cholesterolemia , Hypo high-density lipoprotein cholesterolemia and hypertriglyceridemia between coronary artery stenosis group and coronary artery normal group (χ2＝4.429-14.329 , P＜ 0.05 ).The Logistic multivariate regression analysis showed that hyper low-density lipoprotein cholesterolemia (OR＝7.026 ,95% CI :1.831-26.959 ,P＜0.05) and night flight hours (OR＝4.461 , 95% CI :1.694-11.746 , P ＜ 0.05) were the independent risk factors of coronary artery stenosis. Conclusions Hyper low-density lipoprotein cholesterolemia and night flying hours are the independent risk factors of coronary artery stenosis in pilots.These hint that the change of circadian rhythms would be an important factor to induce coronary artery stenosis besides the common risk factors.

Objective To investigate the main risk factors induced to coronary artery stenosis in order to provide evidence for prevention of coronary heart disease in flying personnel. Methods By analyzing the computed tomography angiography (CTA) ,44 flying personnel clinically suspected as coronary heart disease were divided into coronary artery stenosis group and normal coronary artery group.The comparisons on age ,flying aircraft type ,flying duties ,body mass index (BMI) ,flying hours ,night flying hours , blood lipid level , serum glucose level , histories of hypertension and smoking were conducted between two groups.The Logistic multivariate regression analysis was used for determining risk factors. Results The CTA results indicated 25 cases (56.82%) of coronary artery stenosis and 19 normal cases.The univariate analysis showed the statistical differences on age , flight hours , night flight hours , and the incidences of hypercholesterolemia , hyper low-density lipoprotein cholesterolemia , Hypo high-density lipoprotein cholesterolemia and hypertriglyceridemia between coronary artery stenosis group and coronary artery normal group (χ2＝4.429-14.329 , P＜ 0.05 ).The Logistic multivariate regression analysis showed that hyper low-density lipoprotein cholesterolemia (OR＝7.026 ,95% CI :1.831-26.959 ,P＜0.05) and night flight hours (OR＝4.461 , 95% CI :1.694-11.746 , P ＜ 0.05) were the independent risk factors of coronary artery stenosis. Conclusions Hyper low-density lipoprotein cholesterolemia and night flying hours are the independent risk factors of coronary artery stenosis in pilots.These hint that the change of circadian rhythms would be an important factor to induce coronary artery stenosis besides the common risk factors.