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Objective To observe the effect of excess oxygen supply for different time periods on the mitochondrial energy metabolism in alveolar epithelial type Ⅱ cells. Methods Rat RLE-6TN cells were assigned into a control group (21% O2 for 4 h) and excess oxygen supply groups (95% O2 for 1,2,3,and 4 h,res-pectively).The content of adenosine triphosphate (ATP),the activity of mitochondrial respiratory chain complex V,and the mitochondrial membrane potential were determined by luciferase assay,micro-assay,and fluorescent probe JC-1,respectively.Real-time fluorescence quantitative PCR was employed to determine the mRNA levels of NADH dehydrogenase subunit 1 (ND1),cytochrome b (Cytb),cytochrome C oxidase subunit I (COXI),and adenosine triphosphatase 6 (ATPase6) in the core subunits of mitochondrial respiratory chain complexes Ⅰ,Ⅲ,Ⅳ,and Ⅴ,respectively. Results Compared with the control group,excess oxygen supply for 1,2,3,and 4 h down-regulated the mRNA levels of ND1 (q=24.800,P<0.001;q=13.650,P<0.001;q=9.869,P<0.001;q=20.700,P<0.001),COXI (q=16.750,P<0.001;q=10.120,P<0.001;q=8.476,P<0.001;q=14.060,P<0.001),and ATPase6 (q=22.770,P<0.001;q=15.540,P<0.001;q=12.870,P<0.001;q=18.160,P<0.001).Moreover,excess oxygen supply for 1 h and 4 h decreased the ATPase activity (q=9.435,P<0.001;q=11.230,P<0.001) and ATP content (q=5.615,P=0.007;q=5.029,P=0.005).The excess oxygen supply for 2 h and 3 h did not cause significant changes in ATPase activity (q=0.156,P=0.914;q=3.197,P=0.116) and ATP content (q=0.859,P=0.557;q=1.273,P=0.652).There was no significant difference in mitochondrial membrane potential among the groups (F=0.303,P=0.869). Conclusion Short-term excess oxygen supply down-regulates the expression of the core subunits of mitochondrial respiratory chain complexes and reduces the activity of ATPase,leading to the energy metabolism disorder of alveolar epithelial type Ⅱ cells.
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Animals , Rats , Energy Metabolism , Adenosine Triphosphate , Adenosine Triphosphatases , RNA, Messenger , OxygenABSTRACT
Objective:To assess the validity and reliability of the depression and somatic symptoms scale among patients with coronary heart disease.Methods:Totally 246 patients with coronary heart disease were assessed with depression and somatic symptoms scale (DSSS), Hamilton depression rating scale for depression (HAMD) and patients’ health questionnaire depression scale-9 item (PHQ-9). The structural validity was evaluated with exploratory factor analysis and confirmatory factor analysis. The validity as a screening tool was evaluated with the gold standard diagnosed by psychiatrists who were trained with the mini international neuropsychological interview (MINI) according to ICD-10. Receiver operating characteristic (ROC) curve was used to identify cutoff scores for depression. Cronbach α coefficient was used to evaluate the internal consistency.Results:Exploratory factor analysis yielded two factors: depression factor and somatic factor, and the cumulative variance was 51.8%. The fitting indexes of confirmatory factor analysis were as follows: χ2/ df=3.636, RMR=0.077, RMSEA=0.104, IFI=0.804, TLI=0.781, CFI=0.802. The intraclass correlation coefficient of DSSS and HAMD was 0.54. The area under ROC curve (AUC) was 0.828, and the best boundary value was 17 points (sensitivity and specificity: 81% and 75%, respectively). The total scores and subscale scores for internal consistency of DSSS were higher in the depression group than those in the non-depression group ( P<0.01). Cronbach α coefficient for internal consistency of DSSS was 0.917. Conclusion:The DSSS has good validity and reliability among patients with coronary heart disease for screening depression, and can be used to screen depression among patients with coronary heart disease in general hospital.
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Meridians and Acupoints Science is a basic course and important component of acupuncture and Tuina science. This course contains considerable theoretical and basic knowledge to be memorized, which causes some difficulties for students to study and inevitably influences the learning effect. In view of that, the authors implemented reforms in interest teaching practice in teaching of Meridians and Acupoints Science. Reforms including the use of interesting memory method, string comparison of acupoints, interspersed discussion of cases, presentation of famous doctors' experience in acupoint application and development of the second class activities have achieved some success. That has aroused the students' enthusiasm for learning and improved the quality of teaching.
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To discuss the risk factors of developing cardiovascular disease [CVD] after the kidney transplantation. Retrospective analysis on the data of 1106 patients who had been underwent kidney allotransplantation in People's Hospital of Zhengzhou from July, 2010 to Dec, 2014 and conformed to the inclusion criteria was taken. Cox proportional hazard model was used to analyze the risk factors of developing CVD after the kidney transplantation. 7 days, 1 month, 3 months, 6 months and 12 months before and after the operation, the data collection and following-up visits were respectively arranged. 12 months after the operation, the following-up visits were arranged once a half year until the end of March, 2014. 216 [19.5%] patients developed CVD after the kidney transplantation. Among them, 47 [4.2%] patients developed CVD within the first three months after the operation, which accounted for 26.8% in the CVD patients; 125 [11.3%] patients developed CVD within the first one year after the operation, which accounted for 47.9% in the CVD patients. 51 [4.6%] patients died after the operation. Among them, 19 [2.7%] patients died of CVD, which accounted for 37.3% in the whole died patients. Multiple factors analysis revealed that the following were the risk factors to develop CVD after the kidney transplantation: The age of receptors was greater than 50 [OR=2.39, 95%CI 1.15-3.60]; The receptors had diabetes before the surgery [OR=3.18, 95%CI 1.56-6.42]; The receptors had CVD medical history before the surgery [OR=3.85, 95%CI 2.15-7.54]; The primary diseases of receptors were diabetic nephropathy [DN] [OR=2.12, 95%CI 1.14-3.98]; The preoperative dialysis time was greater than 12 months[OR=1.27, 95%CI 0.98-1.38]; The postoperative serum creatinine of the receptors was greater than 200 micro mol/L [OR=2.78, 95%CI 1.35[tilde]4.53]; The delayed graft failure [DGF] occurred [OR=1.24, 95%CI 1.02[tilde]1.42]; Acute rejection appeared[AR][OR=2.98, 95%CI 1.56[tilde]5.72]; Renal allograft dysfunction appeared [OR=4.86, 95%CI 3.15[tilde]7.78]. The morbidity of CVD is high after the kidney transplantation and the risk factors are diversified. That revising or excluding relevant risk factors may lower the morbidity of developing CVD and is in favor of the long-term survival for the transplanted kidney
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Objective:To determine the effects of cognitive-behavioral therapy (CBT) on resting-state brain functional changes in adults with attention-deficit/hyperactivity disorder (ADHD).Methods:Participants including 10 adults with ADHD aged 18-65 years,diagnosed with the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition (DSM-Ⅳ) and 12 age-and gender-matched healthy controls.The ADHD symptoms and executives functions were assessed using the ADHD Rating Scale (ADHD-RS) and Behavior Rating Inventory of Executive Function (BRIEF) respectively and resting-state functional magnetic resonance imaging were acquired before and after 12-session,CBT for ADHD patients.The healthy controls were also scanned.We used the regional homogeneity (ReHo) to capture the changes of regional brain function between pre-and post-CBT in ADHD for measuring the effects of CBT.Results:After CBT,the total scores of ADHD-RS [(43 ± 7) vs.(31 ± 7),P ＜ 0.01],the subscale of inattention and subscale of hyperactivity/impulsivity were decreased in ADHD adults.As for the executive functions,the subs cales of monitor [(15 ± 2) vs.(11 ± 2),P ＜ 0.01] and organization [(19 ± 5) vs.(14 ± 4),P ＜ 0.01] in BRIEF were reduced significantly in adults with ADHD after CBT training.The ReHo was increased in the regions involved in default mode network and fronto-parietal network,i.e.,right parahippocampa gyrus,fight precentral gyms,fight postcentral gyms and left postcentral gyrus (Voxels with P ＜ 0.05 and cluster size ＞3051mm3,which resulted in a corrected threshold of P ＜ 0.01 determined by AlphaSim).Conclusion:These findings support that CBT could selectively modulate the regional brain function in the default mode network and fronto-parietal network which may contribute to the improvement of ADHD symptoms and executive functions.
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Objective:Using a diagnostic test research,to explore the reliability and validity of the Patient Health Questionnaire (PHQ-9)on screening of depressive disorders in general hospital,and to determine the cut points for depressions with different severities.Methods:Three hundred and nineteen help-seekers (n =319)con-sulting the outpatient department of psychiatry in a general hospital were collected continuously.Among them,80 were people without any psychiatric diagnosis,239 were patients with mental disorders.All of subjects were asked to fulfill PHQ-9,and were assessed by psychiatrist with Mini-International Neuropsychiatric Interview (M.I.N.I.) and Hamilton rating scale for depression.M.I.N.I.was gold standard to diagnose depressive disorder,HRSD was used to assess the illness severity.Result:Factor analysis showed good structure validity of PHQ-9.46 patients were diagnosed depressive disorders.The area under the receiver operator characteristic analysis (ROC)of PHQ-9 was 0.94 (95%CI:0.91 -0.97)for depressive disorders.With 15 as the critical value for depression screening,the sen-sitivity was 0.83 and specificity was 0.90,respectively.By the result of HRSD as the standard to rank different lev-els of depression,the cut points of PHQ-9 for mild,moderate,and severe depression was 6,12,and 15.The consis-tency between results of PHQ-9 (with cut points of 6,12,15)and HRSD was moderate (with kappa =0.49).The kappa between results of PHQ-9 (with recommended cut points of 5,10,and 15)and HRSD was 0.46.Cronbach αcoefficient of PHQ-9 was 0.892.Conclusion:It suggests that PHQ-9 has satisfying reliability and validity,and is applicable for screening depression and assessment of its severity of outpatients in general hospital.The recommen-ded cut points of PHQ-9 are applicable to depressive outpatients in general hospital in China.
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To investigate the protective effects and possible mechanism of pomegranate flowers polyphenols (PFP) on liver function of rats with diabetes combining non-alcoholic fat liver diseases, diabetes combining nonalcoholic fat liver disease model rats were established with high calorie feeding and small dose intraperitoneal injection of streptozotocin (STZ). Model rats were randomly divided into: model group, metformin group, pomegranate flowers polyphenols low, medium and high dose group (75, 150 and 300 mg x kg(-1)). After four weeks treatment, the levels of FPG, blood fat profiles and serum insulin, ALT, AST levels, SOD and MDA in the liver and serum separately were analyzed with biochemical methods. Paraoxonase (PON1 and PON3) mRNA and protein expression in liver were checked by RT-PCR and immunohistochemical method. Pathological changes of the liver were observed. FPG, IRI, non-HDL-C and transaminase significantly reduced and HDL-C raised in the each PFP dose group; Furthermore, compared with model group, fat drops in liver cells significantly reduced, antioxidant ability enhanced, PON1 mRNA and protein expression level in liver increased significantly. The protective effects of PFP against diabetes combining non-alcoholic fat liver diseases rats might through the increase liver PON1 mRNA and protein expression further enhanced the body antioxidant capacity and reduced IRI so as to ameliorate the rat hepatic steatosis.
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Animals , Male , Rats , Alanine Transaminase , Blood , Aryldialkylphosphatase , Genetics , Metabolism , Aspartate Aminotransferases , Blood , Blood Glucose , Metabolism , Diabetes Mellitus, Experimental , Metabolism , Pathology , Fatty Liver , Metabolism , Pathology , Flowers , Chemistry , Insulin , Blood , Liver , Metabolism , Pathology , Malondialdehyde , Blood , Metabolism , Non-alcoholic Fatty Liver Disease , Plants, Medicinal , Chemistry , Polyphenols , Pharmacology , Lythraceae , Chemistry , RNA, Messenger , Metabolism , Random Allocation , Rats, Sprague-Dawley , Superoxide Dismutase , Blood , MetabolismABSTRACT
Mr. ZENG Tian-zhi, one of the first generation students of CHENG Dan-an in Chengjiang School of acupuncture and Moxibustion, integrated traditional Chinese medicine and western medicine even if just began to study medicine from his mid-life. He has practiced medicine in Guangdong, Guangxi and Hong Kong. He founded the Medical School of Science Acupuncture and Moxibustion in Hong Kong to teach students, impart professional knowledge, write and publish monographs, and carried forward acupuncture with all his life. The medical learning way, medical ethics, medical achievement and experience of Mr. ZENG, and the Scientific Acupuncture Therapeutics will bring a light to the inheritance and development of Chengjiang School and can be reference for the modern medical physicians.