Objective To investigate the protective effect of Fas ligand (FasL) gene transfer to renal allografts in rats. Methods FasL recombinant adenovirus vector was contruccted and transduced into rat renal allografts by renal artery perfusion. RT-PCR and immunohistochemistry were use d to detect the expression of exogenous FasL gene. Electronic microscopy was use d to observe the changes in the ultra-structure. At the same time, mean surviva l of animals and the level of serum creatinine were observed. Results FasL mRNA and protein were positively expressed in FasL gene transduced renal al lografts. FasL protein mainly distributed in renal small artery, glomerular and proximal tubues. FasL transduced allografts had less renal graft rejection and c hange in the ultra-structure, and prolonged allograft survival and lower serum creatinine as compared to control animals (P

Objective To screen the mutation and analysis its characteristics of SPG4 and SPG3A in Chinese patients with hereditary spastic paraplegia (HSP).Methods Mutation and polymorphism of the SPG4 and SPG3A were screened in the index eases of 26 autesomal dominant families (AD-HSP) and 30 sporadic cases by combination of DHPLC and sequencing analysis, then the index cases of 26 AD-HSP were further confirmed with direct sequencing.Results One novel mutation of SPG4, 1616 + 1g→t, was identified in the index ease from an AD-HSP family.Three symptomatic patients and 2 pre-symptomatic patients were found in this family by sequencing analysis.No mutation of SPG3A was detected.In addition, 8 novel SPG4 polymorphisms and 3 novel SPG3A polymorphisms were identified.Conclusions The study has broadened the mutation and polymorphism spectrums of SPG4 and SPG3A.Mutation of these two genes is less common in this group of patients.

Objective To explore the basic biological characteristics of lncRNA -uc.1 67,and its spatial dis-tribution,temporal expression pattern during the mouse embryonic development.Methods The UCSC genome browser of ENCODE was used to analyze preliminary bioinformatics of lncRNAs.Real -time (RT)-PCR was applied to detect the expression of uc.1 67 and neighboring genes in the embryonic mouse heart in different stages (P7.5,P1 1 .5,P1 4.5, P1 8.5).Dimethyl sulphoxide was used to induce P1 9 cell differentiation into the cardiomyocytes.RT -PCR was applied to detect the expression changes in uc.1 67 and neighboring genes on differential day 0,4,6,8 and 1 0.Results Full -length of human uc.167 was 201 bp,and human uc.167 was located in the genome 5q14.3 (chr5:88179623 -881 79824,GRCh37 /hg1 9).uc.1 67 mainly expressed in the ventricular muscle tissue.The expression of uc.1 67 was gradually decreased in the mouse embryonic heart development process(P7.5:1 .000 ±0.1 00,P1 1 .5:0.71 4 ±0.1 07, P1 4.5:0.393 ±0.043,P1 8.5:0.1 25 ±0.01 3),while the expression of its neighboring Mef2c gene was gradually in-creased(P7.5:1 .081 ±0.1 1 8,P1 1 .5:2.340 ±0.351 ,P1 4.5:3.958 ±0.542,P1 8.5:9.361 ±0.722),which showed an opposite trend.The expression of uc.1 67 during P1 9 cell differentiation into cardiomyocytes showed a an increase at first and then a decreasepattern,and the highest level expression of uc.1 67 was on differential day 4(d0:1 .071 ± 0.1 1 7,d4:4.71 4 ±0.501 ,d6:3.572 ±0.41 4,d8:2.550 ±0.31 4,d1 0:0.786 ±0.085).The expression of neigh-boring gene Mef2c was in an opposite trend(d0:1 .01 2 ±0.041 ,d4:0.353 ±0.037,d6:2.470 ±0.329,d8:6.706 ± 0.682,d1 0:7.765 ±0.705).Conclusions It is suggested that uc.1 67 may take part in the process of embryonic heart development and may play a role through negatively regulating its neighboring gene Mef2c.

Objective To study the prevalence of hypertension in a Beijing urban population aged 6074 years and to analyze the characteristics of hypertension distribution. Methods A(cross-sectional) study was carried out in the population consisting of 1175 people,and data of blood pressure,glucose,lipid and obesity were analyzed. Results (1) The age-adjusted prevalence of hypertension was 60.5% in the Beijing elderly population.About two thirds of the hypertensive cases were taking prescribed medication(60.9%).Only one quarter of hypertension was controlled successfully(23.4%).(2)Compared with 60-64 age group,the prevalences of hypertension of 70-74 age group was increased by 30.3% in man and by 32.1% in women.(3) The prevalence of isolated systolic hypertension in the elderly was 25.0%,accounting for 42.3% of hypertension in the elderly population.(4) Eighty-six percent of all elder hypertensive patients had one and more cardiovascular risk factor and more in addition to hypertension itself. Conclusions High blood pressure is a popular disease of cardiovascular disorders in Beijing elderly population.Isolated systolic hypertension is the main hypertension subtype in the elderly.Most of the elderly hypertension patients combine other cardiovascular disease risk factors.

Objective To study the effects and security of umbilical cord mesenchymal stem cells transPlantation (UC-MSCs) for Patients with refractory systemic luPus erythematosus(SLE). Methods Forty Patients with refractory SLE were divided into two grouPs at random.All of Patients were treated for glucocorticoid and CTX, then Patients of the 2 grouP were transPlanted for UC-MSCs.All of Patients were observed before and 2 weeks after treatment,1 month,2 months,3 months,6 months,9 months and 12 months of clinical manifestations and laboratory Parameters . Results 2 weeks after treatment, 60%of the 1 grouP were SLEDAI<10 scores, and the 2 grouPs were 90%. There was statistically significant difference between the two grouPs (χ2=7.619, P=0.006). 1 year after treatment, PLT,ALB and C3 of the 2 grouPs were more than the 1 grouPs(P<0.05). SLEDAI,U-Pro,ESR and Hs-CRP of the 1 grouPs were more than the 2 grouPs(P<0.05). WBC,Cr and C4 of the two grouPs had not statistically significant difference(P﹥0.05). The recurrence rate of the 1 grouPs was 45%. Of the 2 grouPs was 15%.There was statistically significant difference between the two grouPs (χ2=4.286, P=0.038). Conclusion It is effective and safe for refractory SLE to transPlant UC-MSCs after using glucocorticoid and CTX. Further observation is required to evaluate long term efficacy and adverse reaction of UC-MSCs.

Objective:To explore whether sleep quality suffers in patients with mild Alzheimer's disease(AD)and mild cognitive impairment(MCI), and to further investigate the correlation between sleep disorders and cognitive function in these patients.Methods:In this study, 30 mild AD patients, 39 MCI patients and 43 demographically matched healthy controls were enrolled.Sleep quality was assessed by the Pittsburgh sleep quality index(PSQI), and cognitive function was assessed by the mini-mental state examination(MMSE), the Montreal cognitive assessment(MoCA)and a set of neuropsychological scales.The correlation of sleep quality with cognitive function was analyzed for the three groups.Results:Differences were significant in sleep time score[0.0(1.0), 1.0(2.0) vs.1.0(1.0), F=8.18, P=0.02]and daytime function score[1.0(1.0), 1.0(1.0) vs.0.0(1.0), F=8.73, P=0.01]between mild AD, MCI and health control groups.Spearman correlation analysis suggested that scores of sleep disorders were negatively correlated with DSB( r=-0.43, P=0.02)and scores of daytime function were positively correlated with ADL( r=0.39, P=0.03)in patients with mild AD.In addition, scores of sleep quality were negatively correlated with the DSB score( r=-0.40, P=0.01), scores of sleep disorders were positively correlated with ADL( r=0.45, P<0.01), scores of daytime function were negatively correlated with DSF( r=-0.42, P=0.01), DSB( r=-0.62, P<0.01)and VFT-S( r=-0.33, P=0.04), and the total PSQI score was negatively correlated with DSF( r=-0.45, P=0.01)and DSB( r=-0.44, P=0.01)in the MCI group. Conclusions:Patients with mild AD and MCI have longer sleep time and impaired daytime function than healthy people, and sleep quality is correlated with memory, attention and daily living ability in patients with mild AD and MCI.

OBJECTIVETo study the trends of incidence on acute intracerebral hemorrhage events and acute cerebral infarction events in the population aged 25 - 74 in urban areas of Beijing from 1984 to 1999.

METHODSIn monitoring the trends and determinants in the cardiovascular disease (MONICA) project and subsequent study, acute intracerebral hemorrhage events and acute cerebral infarction events were registered in a standardized way in men and women aged 25 to 74 years from 1984 - 1999.

RESULTSBoth intracerebral hemorrhage attack rates decreased but cerebral infarction attack rates increased significantly; The proportion of intracerebral hemorrhage events in stroke events decreased from 42.0% to 16.0% while the proportion of cerebral infarction events in stroke events increased from 55.8% to 81.6%, the changes in incidences of acute intracerebral hemorrhage events and acute cerebral infarction events in various age groups were different.

CONCLUSIONCerebral infarction was the most important risk causing stroke, so prevention of cerebral infarction should be strengthened in the area.

Acute Disease ; Adult ; Age Factors ; Aged ; Cerebral Hemorrhage ; epidemiology ; Cerebral Infarction ; epidemiology ; China ; epidemiology ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Sex Factors

Memory function is the core component of human brain cognition.Memory impairment significantly affects people's daily life and social ability,but existing cognitive training or drug therapy can not effectively improve memory function.In recent years,new techniques and methods have been emerging in brain science research,especially neural regulation techniques,such as transcranial electrical / magnetic stimulation,which can significantly regulate cognitive ability and effectively promote memory function.Transcranial direct current stimulation is a kind of noninvasive and safe technique.It can regulate cerebral cortex activity by changing the cerebral cortex excitability,and play a role in regulating brain function.At present,there have been reports at home and abroad that transcranial direct current stimulation can promote memory function and improve memory effectively.This technique is applied to the diagnosis and treatment of clinical diseases,but its mechanism is not clear.This article reviews the mechanism and application of transcranial direct current stimulation (TDCS) in promoting different types of memory function in order to provide evidence for early intervention and treatment of memory impairment.

OBJECTIVETo Study the temporal patterns of stroke onset, and to provide insights into the triggers which might cause the acute onset of stroke and to develop preventive strategies.

METHODSUsing a 10-year period of the SINO-MONICA-Beijing study cohort a total number of 700 000 people, aged 25 to 74 years was recruited. The diagnostic criteria exactly followed the WHO MONICA project. Date of the week, season and month occurrence of stroke were ascertained. Percentage of stroke onset on date in the week, season and month were calculated. chi(2) test was used to identify the deviation from expected frequencies. Multiple stepwise regression was carried out for multivariate analysis.

RESULTSMost stroke occurred and recurred (chi(2) = 7.02, P = 0.008 in male and chi(2) = 12.32, P = 0.000 4 in female) in winter. The most frequent occurrence on the dates of stroke events were Monday in the urbans and Saturday in the rurals. The finding were confirmed (the stroke occurrence and recurrence positively correlated with season, correlation coefficient 0.032, P = 0.01) by correlation and multiple stepwise regression.

CONCLUSIONIt was important to find out the circadian variation and the external triggering factors together with unhealthy behaviour of life that would contribute to the prevention and reduction of stroke onset.

Adult ; Aged ; China ; epidemiology ; Cohort Studies ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Seasons ; Stroke ; epidemiology

Objective:To explore the effect of visual processing patterns on emotional face processing in patients with Alzheimer's disease (AD).Methods:From June 2020 to August 2021, twenty-two AD patients (AD group) who met the conditions of this study were selected from the memory impairment clinic of the First Affiliated Hospital of Anhui Medical University, and demographically matched twenty-one elderly healthy people (control group) were selected from the patients' family members and community residents. The two groups of subjects performed emotional face visual scanning and facial recognition experiments after completing the evaluation of the cognitive scale and eye movement data were recorded in the emotional face visual scanning task. Statistical analysis of the obtained results was performed using SPSS 23.0 Windows version software. The data that conformed to the normal distribution were tested by independent samples t-test and variance analysis, and the data that did not conform to the normal distribution were tested by nonparametric test. Results:(1)In the emotional face recognition task, the total accuracy of facial emotion recognition of AD patients(0.52(0.42, 0.59)) was lower than that of the normal control group(0.67(0.64, 0.69)), and the difference was statistically significant( Z=-4.023, P<0.01), which was mainly manifested in recognizing complex facial emotion. (2) In the emotional face visual processing task, the saccade count ((1.96±0.97), (2.50±0.44)), fixation count ((3.93±2.58), (6.37±2.08))and fixation time ((1 205.89±727.32)s, (1 761.38±525.54)s)of AD patients were lower than those of the control group( t=-2.314, -3.402, -2.880, all P<0.05), and the surrounding facial fixation time (384.95 (276.51, 587.78)s, 276.06 (190.03, 384.55)s) was higher than that of the control group( Z=-2.478, P=0.013). Patients with AD had a lower fixation count than that in the control group on the eye area of surprise ((3.76±2.90), (6.25±2.19)), anger ((4.48±2.72), (7.06±2.55)) and disgust ((4.10±2.45), (6.67±2.45)), and the differences were statistically significant ( t=-3.164, -3.207, -3.436, all P<0.05). Patients with AD had a lower fixation time than those of the control group on the eye area of surprise ((1 150.26±753.22)s, (1 779.91±551.66)s), angry ((1 430.85±869.52)s, (1 944.51±612.63)s) and disgust ((1 266.14±765.67)s, (1 898.33±676.02)s), and the differences were statistically significant ( t=-3.115, -2.247, -2.865, all P<0.05). (3) Spearman correlation analysis showed that the accuracy of overall emotional face recognition was positively correlated with the fixation time in the eye area in AD patients ( r=0.429, P<0.05). Conclusion:The impaired visual processing of AD patients causes emotional face recognition disorders. Therefore, AD patients have different visual processing patterns in emotional face processing than age-matched normal controls, mainly manifested as the decreased fixation on the eye area.