Objective:To observe the expression of RGMa and RhoA in the hippocampus of cognitive impairment rats induced by A?1-40. Methods:Morris water maze was used to study the cognitive function, and reverse transcription-polymerase chain reaction(RT-PCR)method was used to determine the changes of RGMa mRNA and RhoA mRNA expressions. mmunohistochemistry was used to detect the expression of RGMa protein. Results:Model group showed learning and memory impairment, the expression levels of RGMa mRNA and protein in the hippocampus decreased compared with control group(p

Objective To investigate the relatiouship between obsessive-compulsive symptoms and schizophreuia symptoms in schizo-obsessive patients, and to address the feature of insight. Methods Fifty-two cases of schizophrenia with obsessive-compulsive symptoms were assessed by Yale-Brown obsessive-compulsive scale( YBOCS) and positive and negative syndrome scale(PANSS). Results The Y-BOCS overall severity score(26.7 ±4.78)was not correlated with the PANSS total score(86.9 ± 13.4)( r=0. 191 , P＞0.05), there was significant association between the insight score( 2.65 ±0.81 )and the PANSS total score( 86. 9 ± 13.4 ) ( r = 0. 416, P＜0. 01 ),and the same between the insight score( 2.65 ± 0. 81 )and the Y-BOCS overall severity score(26.7 ±4.78 ) ( r = 0. 387, P ＜ 0. 01 ). Conclusion Obsessive-compulsive symptoms and schizophrenia symptoms in schizo-obsessive patients are not correlated, obsessive-compulsive symptoms are not inherent symptoms of schizophrenia. As insight is correlated with both obsessive-compulsive symptoms and schizophrenia symptoms, anti-psychotic along with anti-compulsive treatment should be able to effectively improve the insight of schizo-obsessive patients.

ObjectiveTo investigate the features of the cortisol ( COR),thyroid hormone and autonomic function of anxiety disorder,and to observe the relationships between clinical subtypes,insomnia,gender factors and the neuroendocrine and autonomic function.Methods60 anxiety disorder patients and 60 healthy controls were randomly selected from a three-grade class A hospital over the same period.Blood at 8:00am to test the plasma COR,T3,T4,TSH level and examined the heart rate variability (HRV) on the same day,the anxiety disorder patients also finish the self-rating anxiety scale (SAS).ResultsThe plasma COR,TSH level and LF/HF index were significantly higher( (531.58 ± 218.59 ) nmol/L,P＜ 0.0l ; (3.50 ± 1.35 ) MIU/L,P＜ 0.05 ;3.87 ± 3.37,P＜0.0l ),while the SDNN,LF,HF index were significantly lower in anxiety disorder than that in the control group (27.34±13.13,P＜0.01;338.72 ±396.34,P＜0.01;135.77 ±149.95,P＜0.01).The plasma COR,TSH level and LF/HF index were significantly higher(P ＜ 0.05,P＜0.01,P＜0.01 ),while the SDNN and HF index were significantly lower in panic disorder than that in the generalized anxiety disorder (P ＜ 0.01 ).The plasma COR,TSH level and LF/HF index were significantly higher,while the SDNN,LF,HF index were significantly lower in panic disorder than that in the control group (P＜0.01 ).The plasma COR was significantly higher,while the SDNN and HF index were significantly lower in generalized anxiety disorder than that of the control group (P＜0.01 ).The plasma COR level and LF/HF index were significantly higher (P＜0.01,P＜0.05),while the SDNN,LF,HF index were significantly lower in anxiety disorder with or without insomnia than that in the control group (P＜ 0.01 ).The plasma TSH level was significantly higher in anxiety disorder with insomnia than that in the control group (P＜ 0.05 ).There were no significant difference of the neuroendocrine and autonomic function between anxiety disorder with or without insomnia (P ＞ 0.05 ).The plasma COR,TSH level were significantly higher,while the SDNN,LF,HF index were significantly lower in the female group than that in the male group (P＜0.01).The total SAS scores were significantly positively correhted with plasma COR levels,and was significantly negatively correlated with SDNN,HF index in the anxiety group.ConclusionThere are neuroendocrine and autonomic nervous system dysfunctions in anxiety disorder,and these dysfunctions are related with clinical subtypes,insomnia,and gender.

Objective To investigate the impact of preload fasting and meal replacement in patients with metabolic syndrome.Methods A total of 92 subjects with metabolic syndrome were enrolled in the study.They were assigned into the preload fasting group (PFG),the meal replacement group (MRG),and the control group (CG) for 12-weeks intervention.Special dietary with 100 kcal was provided 30 min before each meal in the PFG,and while in the MRG the same dietary was taken just before each meal and the amount of meal was reduced appropriately.The subjects in CG took meals as usual.Body mass index,waist circumference,and insulin resistance were assessed.Satiety situation was investigated by the scale.Results After 12 weeks,improvement were found in fasting insulin(-3.29 mU/L) and waist circumference (-4.04 cm) in the PFG and significant difference was shown compared to the CG (P＜0.05).Satiety index in the PFG was the most significant among the three group.Conclusion Preload fasting is helpful in improving insulin resistance,reducing waist circumference,and enhancing satiety.

Objective To evaluate the influence of dosage,operation method,adverse reaction of endoscopic photodynamic therapy (EPDT) on its therapeutic efficacy in rabbit models of in-situ rectal cancer,so as to provide preclinical basis of photodynamic therapy for rectal cancer.Methods 20 rabbits with in-situ VX2 rectal cancer were randomly divided into control group,PDT low dose group,intermediate dose group,and high dose group.At 24 h before PDT,photosensitizer (hermimether) was intravenously injected into rabbits.630 nm semiconductor laser was used as light source.The growth of the tumor was observed by conventional endoscopy and endoscopic ultrasonography,and the survival time,general conditions and adverse reactions were recorded.The histopathological changes were observed by hematoxylin-eosin staining.Results At 7 d after PDT,the total response rates of low dose,intermediate dose and high dose group respectively were 40％ (slight),80％ (60％ remarkable and 20％ slight),100％ (20％ remarkable and 80％ slight).The average survival times of the three groups were 14 d,10 d and 5 d,respectively.The main adverse reactions were inflammation,intestinal obstruction,intestinal peristalsis loss and death.Conclusions The dosage of PDT is an important factor to influence the curative effect.The appropriate dose of PDT will have a better effect on the treatment of rectal cancer.A thorough study of these problems is helpful to the clinical application of PDT in the treatment of rectal cancer.

Objective:To investigate the predictive value of 18F-FDG PET-CT in the conversion from thoracoscopic lobectomy to thoracotomy for non-small cell lung cancer (NSCLC). Methods:The clinical data, CT and PET-CT images of 193 patients with primary NSCLC undergoing thoracoscopic surgery from January 2014 to June 2021 at China-Japan Friendship Hospital were retrospectively analyzed. All patients were divided into 45 cases who were converted to thoracotomy (the conversional group) and 148 cases who were not converted to thoracotomy (the non-conversional group). Univariate analysis was performed on clinicopathological characteristics and image parameters. Multivariate logistic regression was used to analyze the factors affecting the conversion to thoracotomy. Taking the final conversion to thoracotomy or not as the gold standard, the predictive effect of variables in the conversion to thoracotomy was analyzed through the receiver operating characteristic (ROC) curve. Delong test was used to compare the area under the curve (AUC) predicted by all variables.Results:In the conversional group, the proportion of peribronchial lymph node (PLN), peribronchial cuffs of soft (PCS), pleural calcification, pulmonary nodule calcification, PLN or PCS calcification or increased density on chest CT was higher than that in the non-conversional group (all P<0.05); and the maximum standardized uptake value (SUV max) of PET in the conversional group was higher compared with that in the non-conversional group ( P<0.001). Univariate logistic regression analysis suggested age ( OR = 4.663,95% CI 2.191- 9.923, P < 0.001) and PLN or PCS density of chest CT scan ( OR = 2.824, 95% CI 1.791-7.303, P < 0.001) were independent influencing factors of the conversion from thoracoscopic lobectomy to thoracotomy. ROC analysis showed that the effect of the conversion to thoracotomy predicted by the combination of 18F-FDG PET and chest CT [AUC = 0.891 (95% CI 0.831-0.951); the optimal cut-off value of SUV max and CT was 3.45, 70 Hu: the sensitivity was 84.4%, the specificity was 83.8%] was better than that by chest CT alone [AUC = 0.678 (95% CI 0.591-0.766); the optimal cut-off value of CT was 70 Hu: the sensitivity was 62.2%, the specificity was 62.8%; P < 0.001] and by age [AUC = 0.625 (95% CI 0.532-0.719); the optimal cut-off value was 65.5 years: the sensitivity was 75.6%, the specificity was 60.1%; P < 0.001]. Conclusions:PLN or PCS density on chest scan and age are valuable in predicting the conversion from thoracoscopic lobectomy to thoracotomy for NSCLC patients. The combination of PET and CT has an additional role in predicting the conversion to thoracotomy during thoracoscopic lobectomy.

Objective To investigate the metastasis and the prognosis of the axillary lymph nodes in triple-negative and invasive ductal breast cancer patients of different ages.Methods 321 female breast cancer patients diagnosed as triple-negative and invasive ductal carcinoma from Jan.1,2008 to Dec.31,2017 were selected as the samples,all of whom were treated with regular surgical treatment and postoperative radiotherapy and chemotherapy,and were divided into three groups according to their ages,including the younger group(＜40 years old),the middle age group (40 to 60 years old),and the elder group(≥60 years).We compared the metastasis of axillary lymph node,the disease-free survival rate after 1 to 5 years of the operations and the prognostic factors of the three groups.Results Among the 321 patients,there were 94 young patients,151 middle-aged patients and 76 elder patients.Among the three groups,the rate of axillary lymph nodes metastasis was the lowest in the elderly group(11.8％),the highest in the middle-aged group(17.2％)and middle in the young group(13.8％).The patients were followed up for 1 to 5 years.The recurrence rate of the young,middle-aged and elder groups was 56.4％,53.6％ and 17.1％ respectively.There was a significant difference between the three groups (P＜0.05).Conclusion ①he frequency of LN transfer in patients of TNBC is lower in the younger and the elder patients than in the middle-aged patients.②The younger patients of TNBC have a higher recurrence rate and poor prognosis,while the elder patients of TNBC have the lowest recurrence rate and good prognosis.(③The prognosis of TNBC may be related to metabolism,which,of course,needs to be further verified with the proof of blood and cell test.(④The younger patients of TNBC are more likely to suffer blood metastasis,and adjuvant systemic therapy in early period may be more beneficial than local radiotherapy and early axillary dissection.

Objective To validate the performance of six enzymatic glycated albumin reagents and evaluate their clinical application.Methods The performance of six enzymatic glycated albumin reagents(labled as A,B,C,D,E,F) from Beijing Jiuqiang Co, Beijing Lideman Co,Ningbomeikang Co, Beijing Haomai Co, Sichuan Maike Co and Asahi Kasei Co were assessed on Olympus AU5800 automatic biochemistry analyzer.According to the standard of CLSI,the precision,interference and linear correlation of these reagents were assessed.To assess the accuracy of GA% ,we used GA standard material whose value had been assigned using ID-LC/MS method provided by ReCCS.To do the method comparison and determine the consistency of assay, 50 fresh serum samples of T2DM outpatient and 80 fresh serum samples of apparently healthy people in Jan 2016 were tested using six kits.According to the EP28-A3C protocol, the reference range for GA%was validated in 122 apparently healthy individuals undertaking medical examination from January to February 2016 in PUMC.Results The precision,and the ability of anti-interference of the six reagents were good.The accuracy percentage deviation of six reagents was-19.3%-9.2%.The correlation coefficient of domestic reagents A to E and imported reagents F in the determination of GA% was 0.966-0.999, the average absolute bias was 7.0%-10.4%.The coincidence rate of A-E and F in determining abnormal GA% was between 88.5% and 96.9%.The coincidence rate was increased after switching to the reference range for preliminary clinical evaluation.Conclusion Six GA enzymatic kits used in automatic biochemical analyzer have high precision and strong anti-interference ability.Accuracy still needs to be improved.

Objective To investigate the effect of Liu-Shen-Wan on transplanted tumors in mice with colon cancer based on the polarization of M2 macrophages in the tumor microenvironment. Methods We established a subcutaneous transplantation tumor model of mice with CT26 colon cancer. Mice were randomly divided into vehicle, oxaliplatin, and oxaliplatin combined with Liu-Shen-Wan groups. Treatment was administered for three weeks, and tumor volume was measured. All mice were weighed during the administration. After the end of the treatment, the mice were dissected and tumors were photographed and weighed. Spleen index was calculated. The expression levels of IFN-γ and IL-12P40 in serum and related blood biochemical indices were measured. The expression levels of M2 macrophage polarization indices, namely, IL-10 and TGF-β, in serum and tumor tissues were detected. The infiltration degree of M2 macrophages in each group was observed by immunohistochemical experiments. Results The tumor volume and mouse weight in the oxaliplatin combined with Liu-Shen-Wan group significantly decreased compared with those in the vehicle group. The spleen index increased, and the expression levels of IFN-γ and IL-12P40 in serum also significantly increased. The mice had no obvious side effects after the drug treatment. In addition, the expression levels of IL-10 and TGF-β in the serum and tissues of mice in the oxaliplatin combined with Liu-Shen-Wan group significantly decreased. The expression levels of CD68 and CD206 in tumor tissues also decreased. Conclusion The anti-tumor effect of Liu-Shen-Wan on the transplanted tumors of mice with colon cancer is related to the inhibition of M2 macrophage polarization in the tumor microenvironment.

Objective To investigate the changes of prevalence of hyperuricemia ( HUA) and its correlations with blood glucose and lipid in healthy adults receiving physical examination at Peking Union Medical College Hospital (PUMCH) from 2012 to 2017. Meth-ods An observational approach was adopted for the data analysis.The test results of uric acid (UA),fasting blood glucose (FBG),to-tal cholesterol (TC),triacylglycerol (TG),low density lipoprotein cholesterol (LDL-C),high density lipoprotein cholesterol (HDL-C), creatinine (Cr) and Urea of 399 089 cases (206 881 males and 192 208 females) at PUMCH from January 2012 to December 2017 were collected and statistically analyzed.Results The total prevalence of HUA was 17.4% in which the prevalence of males was signif-icantly higher than that of females (25.6% vs 8.5%,χ2＝20 234.850,P＜0.01).During the years of 2012 to 2017,the prevalence of HUA was 26.5%,24.7%,28.6%,23.9%,24.8% and 24.5% in males,and 13.8%,6.3%,7.9%,6.1%,6.2% and 6.8% in females for each year respectively.The prevalence of HUA in males aged 18 to 64 years old was significantly higher than that in the age-matched fe-males (all P＜0.05).However, the prevalence of HUA in males aged≥65 years old was similar to the age-matched females.There was no statistically significant difference of HUA prevalence between males and females aged ≥65 in 2013,2015,2016 and 2017 ( χ2＝1.792,0.017,1.440 and 0.205 respectively;all P＞0.05).The percentages of hyperlipidemia in both males and females of HUA group were higher than those of non-HUA group respectively (all P＜0.01).The percentage of hyperglycemia in males of non-HUA group was higher than that of HUA group,but the percentage of hyperglycemia in females of non-HUA group was lower than that of HUA group ( all P＜0.01).High levels of TC,TG and FBG were risk factors of HUA with increased OR values in increased concentrations of TC,TG and FBG,respectively.Conclusion During the recent 6 years, in healthy adults receiving physiced examination at PVMCH, the preva-lence of male HUA diagnosed was at overall high level,but the prevalence of female HUA was in decreasing and relatively stable trend. Hyperlipidemia and hyperglycemia should be the risk factors of HUA.