Objective:To explore the relationship between blood urea nitrogen (BUN) levels and the risk of all-in-hospital mortality in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) complicated with pneumonia.Methods:This study was a secondary analysis of a multicenter, retrospective cohort study, with data sourced from the DATADRYAD database of five hospitals in Japan (Kameda Hospital, Hyogo Hospital, Awa Hospital, Saiseikai Hospital, and Ichinomiyanishi Hospital). The database included 1 237 cases of AECOPD with pneumonia hospitalized from April 2008 to August 2019, aged≥40 years. After excluding 11 cases with missing BUN level data at admission, a total of 1 226 patients were included in this secondary analysis. BUN level at admission was used as the target independent variable, and all-cause in-hospital mortality during hospitalization was the dependent variable. Risk ratio regression analysis was used to assess the independent correlation between BUN level and the risk of in-hospital mortality due to AECOPD complicated with pneumonia; generalized additive models and smoothing curve fitting methods were applied to explore nonlinear relationships, followed by subgroup analyses to evaluate the consistency of the association across different subgroups and further validate the reliability of the findings.Results:After adjusting for potential confounding factors such as gender and age, BUN levels were positively correlated with the risk of all-cause in-hospital mortality [ OR=1.09(95% CI: 1.01-1.17), P=0.032]. There was a relationship between BUN levels and the risk of all-cause in-hospital mortality, with a turning point at 43.3 mg/dl. The sizes and 95% CI on either side of the turning point were 1.04(0.93-1.16) and 1.08(1.05-1.12), respectively. When BUN>43.3 mg/dl, BUN was correlated with the risk of all-cause in-hospital mortality, with an 8.0% increase in the risk of death for every 1.0 mg/dl increase in BUN ( P<0.05); when BUN<43.3 mg/dl, there was no significant relationship between BUN and the risk of all-cause in-hospital mortality ( P=0.534). Subgroup analysis indicated that in each subgroup of gender, age, source hospital, fever, respiratory, heart rate, crackles in the lungs, change in mental status, corticosteroid therapy, intubation, complete assistance with activities of daily living, medical insurance, and length of hospital stay, the OR value of BUN level had good stability (all OR>1.00) with the risk of all-cause mortality in AECOPD patients with pneumonia. Conclusions:BUN levels are associated with the risk of all-cause in-hospital mortality in patients with AECOPD complicated with pneumonia. When BUN>43.3 mg/dl, BUN levels are positively correlated with the risk of all-cause in-hospital mortality in these patients.

End-stage dilated cardiomyopathy belongs to the irreversible cardiac decompensation stage,and neither drugs nor cardiac resynchronization therapy can improve the symptoms of heart failure in patients.Orthotopic heart transplantation is a surgical procedure that involves removing the diseased heart of the recipient and implanting the donor heart in its original position.With the advancements in surgical transplantation techniques and immunosuppressive therapy,it has become an effective treatment for end-stage heart disease.Coronary artery disease after heart transplantation is one of the issues that need attention after heart transplantation.This article reports a 68-year-old male who suffered from recurrent heart failure and ventricular tachycardia due to"dilated cardiomyopathy"and underwent allogeneic orthotopic heart transplantation 5 years ago.The patient underwent coronary angiography and intravascular ultrasound examination under local anesthesia.This case has certain guiding significance for studying the progression of coronary artery disease in heart transplant patients.

Objective To explore the effect of aerobic exercise on the activity of mammalian target of rapamycin(mTOR)signaling pathway in hippocampus of mice with different ages and its relation-ship with cognitive function.Methods Ninety one-month-old C57BL/6 male mice were randomly divid-ed into an aerobic exercise group(E,n=45)and a quiet control group(C,n=45).Group E was sub-jected to aerobic treadmill exercise with 75%VO2max intensity,while group C kept quiet.When they grew to 3,12 and 20 months,15 of them underwent Morris water maze test to test the cognitive func-tion before they were executed for their brain and hippocampus.Then,Western blotting was employed to detect the expression of mTOR,p-mTOR(Ser2448),p-S6K1(Thr389),p-4EBP1(Ser65)and brain-derived neurotrophic factor(BDNF),while immunohistochemical staining was used to detect BDNF pro-tein positive cells in the hippocampus and the integrated optical density was calculated.Results From day 3,the escape latencies in water maze navigation test of 12-month and 20-month mice were signif-icantly higher than the 3-month ones(P<0.05 or P<0.01),with those of the 20-month significantly higher than the 12-month(P<0.05 or P<0.01).Moreover,the distance in target quadrant and number of platform location crossing of the 12-month were significantly lower compared with the 3-month(P<0.05),while those of the 20-month mice were significantly lower than the 3-and 12-month(P<0.01).For 3-month old mice,p-mTOR(Ser2448),p-S6K1(Thr389),and p-4EBP1(Ser65)expressions in group E were significantly higher than group C(P<0.05 or P<0.01);but for the 12-and 20-month-old mice,p-mTOR(Ser2448),p-S6K1(Thr389),and p-4EBP1(Ser65)expressions in group E were significantly lower than those of the age-matched C groups(P<0.05 or P<0.01).Meanwhile,the ex-pression of BDNF in hippocampus of group E was significantly higher than the age-matched C groups(P<0.01).Conclusion Aerobic exercise can promote the development of cognitive function in young mice and delay the age-related degeneration in older mice,which may be realized by activating the hippocampal mTOR signaling pathway in young mice but inhibiting it in adult mice.It is suggested that the activity of mTOR signaling pathway is necessary for hippocampal memory in developing mice,but its overactivity may have adverse effects on cognition in elderly ones.

End-stage dilated cardiomyopathy belongs to the irreversible cardiac decompensation stage,and neither drugs nor cardiac resynchronization therapy can improve the symptoms of heart failure in patients.Orthotopic heart transplantation is a surgical procedure that involves removing the diseased heart of the recipient and implanting the donor heart in its original position.With the advancements in surgical transplantation techniques and immunosuppressive therapy,it has become an effective treatment for end-stage heart disease.Coronary artery disease after heart transplantation is one of the issues that need attention after heart transplantation.This article reports a 68-year-old male who suffered from recurrent heart failure and ventricular tachycardia due to"dilated cardiomyopathy"and underwent allogeneic orthotopic heart transplantation 5 years ago.The patient underwent coronary angiography and intravascular ultrasound examination under local anesthesia.This case has certain guiding significance for studying the progression of coronary artery disease in heart transplant patients.

Objective To explore the effect of aerobic exercise on the activity of mammalian target of rapamycin(mTOR)signaling pathway in hippocampus of mice with different ages and its relation-ship with cognitive function.Methods Ninety one-month-old C57BL/6 male mice were randomly divid-ed into an aerobic exercise group(E,n=45)and a quiet control group(C,n=45).Group E was sub-jected to aerobic treadmill exercise with 75%VO2max intensity,while group C kept quiet.When they grew to 3,12 and 20 months,15 of them underwent Morris water maze test to test the cognitive func-tion before they were executed for their brain and hippocampus.Then,Western blotting was employed to detect the expression of mTOR,p-mTOR(Ser2448),p-S6K1(Thr389),p-4EBP1(Ser65)and brain-derived neurotrophic factor(BDNF),while immunohistochemical staining was used to detect BDNF pro-tein positive cells in the hippocampus and the integrated optical density was calculated.Results From day 3,the escape latencies in water maze navigation test of 12-month and 20-month mice were signif-icantly higher than the 3-month ones(P<0.05 or P<0.01),with those of the 20-month significantly higher than the 12-month(P<0.05 or P<0.01).Moreover,the distance in target quadrant and number of platform location crossing of the 12-month were significantly lower compared with the 3-month(P<0.05),while those of the 20-month mice were significantly lower than the 3-and 12-month(P<0.01).For 3-month old mice,p-mTOR(Ser2448),p-S6K1(Thr389),and p-4EBP1(Ser65)expressions in group E were significantly higher than group C(P<0.05 or P<0.01);but for the 12-and 20-month-old mice,p-mTOR(Ser2448),p-S6K1(Thr389),and p-4EBP1(Ser65)expressions in group E were significantly lower than those of the age-matched C groups(P<0.05 or P<0.01).Meanwhile,the ex-pression of BDNF in hippocampus of group E was significantly higher than the age-matched C groups(P<0.01).Conclusion Aerobic exercise can promote the development of cognitive function in young mice and delay the age-related degeneration in older mice,which may be realized by activating the hippocampal mTOR signaling pathway in young mice but inhibiting it in adult mice.It is suggested that the activity of mTOR signaling pathway is necessary for hippocampal memory in developing mice,but its overactivity may have adverse effects on cognition in elderly ones.

Objective:To describe the prevalence of anxiety disorders and its distribution in Inner Mongolia Autonomous Region,and to explore the relevant factors of anxiety disorders.Methods:From June 2019 to Decem-ber 2019,representative multi-stage disproportionate stratified sampling procedure was used to sample in residents aged 18 and over in the Inner Mongolia Autonomous Region.All respondents were face-to-face interviewed by trained interviewers.Composite International Diagnostic Interview-3.0(CIDI-3.0)was used to diagnose anxiety disorders according to the criteria and definition of the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition(DSM-Ⅳ).Chi-square test and multivariate logistic regression analysis were used for statistical anal-ysis.Results:Totally 12 315 people were interviewed in the survey.The weighted 12-mouth prevalence rate of any anxiety disorder was 4.64％,and the lifetime prevalence rate was 6.25％.The weighted 12-month prevalence rate of anxiety disorders was higher in female than that in male(5.38％vs.3.92％).The rate was higher in rural resi-dents than that in urban residents(5.67％vs.3.95％).The rate was higher in people with chronic diseases than that in people without chronic diseases(6.81％vs.2.29％).Logistic regression analysis showed that unmarried(OR=2.32,95％CI:1.31-4.10),separated/divorced(OR=2.49,95％CI:1.33-4.67),in debt(OR=1.55,95％CI:1.04-2.32),chronic disease(OR=2.22,95％CI:1.39-3.53),family history of anxiety disorders(OR=12.05,95％CI:8.78-16.53),poor sleep(OR=2.64,95％CI:1.97-3.54)were risk factors of occurrence of anxiety disorders,while junior high school(OR=0.65,95％CI:0.44-0.96)was protective factor of anxiety disor-ders.Conclusion:Adults with chronic diseases,poor sleep,unmarried or separated/divorced,family history of anxi-ety disorders,and financial debt are at higher risk groups of anxiety disorder in Inner Mongolia Autonomous Re-gion.

Objective:To describe the prevalence and distributions of mood disorder in Inner Mongolia Au-tonomous Region,and analyze the related risk factors.Methods:The multistage stratified sampling method with un-equal probability was used to select permanent residents aged 18 years and over in Inner Mongolia Autonomous Re-gion.The Composite International Diagnostic Interview 3.0 was used as a diagnostic tool.Mood disorders were di-agnosed according to the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition(DSM-Ⅳ).Single and multivariate analyses were used to investigate the related factors of mood disorders.Results:Totally,12 315 community residents were interviewed in the survey.The weighted 12-month prevalence and lifetime prevalence of mood disorder were 5.4％and 8.7％,respectively.Weighted 12-month prevalence of depressive disorder was 4.9％,and that of bipolar disorder was 0.3％.Among all subtypes of mood disorder,the 12-month prevalence rate of major depressive disorder(3.1％)was the highest.Multivariate logistic regression analysis showed that female,unmarried,separated or divorced,unemployment,family history,other mental disorders,sleep disorders and chronic diseases(OR=1.56,2.80,2.07,1.42,13.46,7.97,3.23,2.13)were risk factors of mood disorder,while aged 65 years and over(OR=0.44)was protective factor of mood disorders.The lifetime consultation rate in patients with mood disorders was 15.5％,the rate of psychiatric consultation was 3.7％,the rate of medication was 1.8％.Con-clusion:It indicates that female residents and people who are unmarried,separated and divorced,unemployed,with family history,suffering from other mental disorders,suffering from sleep disorders,and suffering from chronic dis-eases may be high risk groups of mood disorders,and the utilization rate of health services is rather low in Inner Mongolia Autonomous Region.

Objective:To describe the prevalence of anxiety disorders and its distribution in Inner Mongolia Autonomous Region,and to explore the relevant factors of anxiety disorders.Methods:From June 2019 to Decem-ber 2019,representative multi-stage disproportionate stratified sampling procedure was used to sample in residents aged 18 and over in the Inner Mongolia Autonomous Region.All respondents were face-to-face interviewed by trained interviewers.Composite International Diagnostic Interview-3.0(CIDI-3.0)was used to diagnose anxiety disorders according to the criteria and definition of the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition(DSM-Ⅳ).Chi-square test and multivariate logistic regression analysis were used for statistical anal-ysis.Results:Totally 12 315 people were interviewed in the survey.The weighted 12-mouth prevalence rate of any anxiety disorder was 4.64％,and the lifetime prevalence rate was 6.25％.The weighted 12-month prevalence rate of anxiety disorders was higher in female than that in male(5.38％vs.3.92％).The rate was higher in rural resi-dents than that in urban residents(5.67％vs.3.95％).The rate was higher in people with chronic diseases than that in people without chronic diseases(6.81％vs.2.29％).Logistic regression analysis showed that unmarried(OR=2.32,95％CI:1.31-4.10),separated/divorced(OR=2.49,95％CI:1.33-4.67),in debt(OR=1.55,95％CI:1.04-2.32),chronic disease(OR=2.22,95％CI:1.39-3.53),family history of anxiety disorders(OR=12.05,95％CI:8.78-16.53),poor sleep(OR=2.64,95％CI:1.97-3.54)were risk factors of occurrence of anxiety disorders,while junior high school(OR=0.65,95％CI:0.44-0.96)was protective factor of anxiety disor-ders.Conclusion:Adults with chronic diseases,poor sleep,unmarried or separated/divorced,family history of anxi-ety disorders,and financial debt are at higher risk groups of anxiety disorder in Inner Mongolia Autonomous Re-gion.

Objective:To describe the prevalence and distributions of mood disorder in Inner Mongolia Au-tonomous Region,and analyze the related risk factors.Methods:The multistage stratified sampling method with un-equal probability was used to select permanent residents aged 18 years and over in Inner Mongolia Autonomous Re-gion.The Composite International Diagnostic Interview 3.0 was used as a diagnostic tool.Mood disorders were di-agnosed according to the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition(DSM-Ⅳ).Single and multivariate analyses were used to investigate the related factors of mood disorders.Results:Totally,12 315 community residents were interviewed in the survey.The weighted 12-month prevalence and lifetime prevalence of mood disorder were 5.4％and 8.7％,respectively.Weighted 12-month prevalence of depressive disorder was 4.9％,and that of bipolar disorder was 0.3％.Among all subtypes of mood disorder,the 12-month prevalence rate of major depressive disorder(3.1％)was the highest.Multivariate logistic regression analysis showed that female,unmarried,separated or divorced,unemployment,family history,other mental disorders,sleep disorders and chronic diseases(OR=1.56,2.80,2.07,1.42,13.46,7.97,3.23,2.13)were risk factors of mood disorder,while aged 65 years and over(OR=0.44)was protective factor of mood disorders.The lifetime consultation rate in patients with mood disorders was 15.5％,the rate of psychiatric consultation was 3.7％,the rate of medication was 1.8％.Con-clusion:It indicates that female residents and people who are unmarried,separated and divorced,unemployed,with family history,suffering from other mental disorders,suffering from sleep disorders,and suffering from chronic dis-eases may be high risk groups of mood disorders,and the utilization rate of health services is rather low in Inner Mongolia Autonomous Region.