N-butanol combined with turpentine instead of xylene for paraffin embeddin / 解剖学报

Objective To look for a tissue paraffin embedding method that can replace xylene transparent agent. Methods The mixture of N-butanol and turpentine was used to replace the role of anhydrous ethanol and xylene in the process of conventional paraffin embedding. The brain, kidney, stomach, liver and duodenum of multiple cerebral infarction model rats were embedded in paraffin. Finally, the new dehydration procedure was evaluated according to the effect of paraffin section, HE staining and immunohistochemical result . Results The mixture of N-butanol and turpentine could replace not only the dehydration effect of anhydrous ethanol but also the transparency effect of xylene in the conventional paraffin embedding process. The tissue sections treated with the mixture of N-butanol and turpentine were smooth, and the tissue did not become brittle or hard; After HE staining, the nucleus and cytoplasm of the new dehydrated tissue were distinct, and the chromaticity, color and transparency of the tissue were not different from those of the conventional dehydration procedure; Immunohistochemical staining was performed on different tissues of rats, and the comparison result were no different from conventional embedded tissue immunohistochemical staining. Conclusion N-butanol combined with turpentine for tissue dehydration can not only avoid the toxic effect of xylene on human, but also reduce the tissue damage caused by excessive dehydration of anhydrous alcohol.

Investigation on the differentially expressed circular RNAs in myocardium of mice with diabetic cardiomyopathy / 中华心血管病杂志

Objective: To identify the differentially expressed circular RNA (circRNA) in the myocardium of diabetic cardiomyopathy (DCM) mice, and analyze their possible biological functions and related regulatory network. Methods: C57BL/6 mice, aged 8 weeks, and weighing were 21-27 g. Eight mice were selected as the control group and 15 mice were selected as the experimental group. The diabetic mice model was established by intraperitoneal injection of streptozotocin in the experimental group. One week after injection, the fasting blood glucose level of mice was measured, and 12 diabetic mice were included in the final experimental group. All mice were fed for 12 weeks under the same laboratory conditions. The cardiac structure and function were detected by echocardiography. Diabetic mice with the left ventricular ejection fraction less than 60% and the E/A less than 1.6 were selected as DCM group (n=3). Mice in DCM group and control group were then sacrificed under deep anesthesia. RNA was extracted from myocardial tissue. High-throughput RNA sequencing technology was used to sequence and identify the RNA in the myocardial tissue of DCM group and normal control group, and the difference was analyzed by DeSeq2. The analysis results were verified at the tissue level by RT-qPCR, and the differential circRNA were analyzed by GO and KEGG pathway analysis. The differentially expressed circRNA-microRNA(miRNA) interaction was predicted by the miRNA target gene prediction software. Results: A total of 63 differentially expressed circRNAs were found in the myocardium of DCM mice. The results of RT-qPCR showed that the tissue level expression of 8 differentially expressed circRNAs was consistent with the sequencing results, of which 7 were up-regulated and 1 was down-regulated. KEGG pathway analysis showed that the up-regulated circRNAs was mainly related to AMPK signal pathway and intercellular adhesion junction pathway, and the down-regulated circRNA was mainly related to cardiomyopathy. Go analysis showed that the up-regulated circRNA was mainly related to the binding process of ions, proteins, kinases and other factors in terms of molecular function, and was involved in regulating the intracellular structure, especially the composition of organelles in terms of cell components. The functional analysis of molecular function and cell components showed that the up-regulated circRNA were related to the cell component origin, recruitment and tissue, and thus participated in the regulation of cell biological process. The down regulated circRNA was related to catalytic activity in terms of molecular function, protein kinase binding process, transferase and calmodulin activity, and was closely related to the components of contractile fibers and the composition of myofibrils. These differentially expressed circRNAs were also related to biological processes such as lysine peptide modification, sarcomere composition, myofibril assembly, morphological development of myocardial tissue, myocardial hypertrophy and so on. Conclusions: In this study, we detected the novel differentially expressed circRNAs in the myocardium of DCM mice, and bioinformatics analysis confirmed that these circRNAs are related to oxidative stress, fibrosis and death of cardiomyocytes, and finally participate in the pathophysiological process of DCM.

Analysis on the expression profile of circRNAs in hypertrophic myocardium mice / 中华心血管病杂志

Objective: To explore the differential expression of circRNAs and their potential impact on the pathophysiological process in cardiac hypertrophy. Methods: Six SPF C57BL/6J male mice, aged 8 to 10 weeks, were randomly divided into transverse aortic constriction (TAC) group (n=3) or sham operation(sham) group (n=3) according to random number table method. TAC mouse model was used to induce cardiac hypertrophy. Four weeks after surgery, high-throughput sequencing analysis was performed to detect differentially expressed circRNA in left myocardial tissues of mice between TAC group and sham group, and principal component analysis of circRNA was performed by R language software. Enrichment analysis was performed by GO and KEGG databases to predict the basic functions of differentially expressed circRNA-derived genes and their biological pathways. The differentially expressed circRNAs in the sequencing results were verified by real-time fluorescence quantitative polymerase chain reaction. Cytoscape software was used to construct circRNA-microRNA (miRNA) network maps to predict their interactions by combining differentially expressed circRNA and TargetScan predicted miRNA sites. Results: Principal component analysis was performed on 4 580 circRNAs detected from 6 samples of mice in TAC group and sham group. The results of R language software indicated that the variance contribution rate of the first 3 principal components, namely the first, second and third principal components, was 91.01%, 3.19% and 2.01%, respectively, and the cumulative variance contribution rate of the 3 components was 96.21%. Among the differentially expressed circRNAs, 6 (19%) were up-regulated and 25 (81%) were down-regulated in the TAC group. GO analysis showed that differentially expressed circRNA was closely related to the occurrence and development of cardiac hypertrophy, and KEGG pathway analysis suggested that downregulated circRNA expression was involved in the regulation of actin cytoskeleton. Fifteen out of the 31 differentially expressed circRNAs were selected for real-time fluorescence quantitative polymerase chain reaction verification, and the results showed that 8 circRNAs were consistent with sequencing results. circRNA-miRNA co-expression network analysis results showed that chr11:65218529-65233184-interacts with mmu-miRNA-30e-3p and mmu-miRNA-30a-3p. Conclusions The differential expression of circRNA in hypertrophic myocardium mice is evidenced in TAC mouse model. circRNA may interact with the corresponding miRNA to influence the occurrence and development of cardiac hypertrophy through autophagy-related cellular hypertrophy pathway or apoptosis-related pathological phenotypes.

Diagnostic Value of Cerebrospinal Fluid T-SPOT.TB for Tuberculousis Meningitis in China / 生物医学与环境科学（英文）

The aim of this study was to evaluate the diagnostic value of the cerebrospinal fluid (CSF) T-SPOT.TB test for the diagnosis of TB meningitis (TBM). A retrospective analysis of 96 patients with manifested meningitis was conducted; T-SPOT.TB test was performed for diagnosing TBM to determine the diagnostic sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV). A receiver operating characteristic (ROC) curve was also drawn to assess the diagnostic accuracy. The sensitivity, specificity, PPV, and NPV of CSF T-SPOT.TB test were 97.8%, 78.0%, 80.3%, and 97.5%, respectively, for 52 patients (54.2%) of the 96 enrolled patients. The area under the curve (AUC) was 0.910, and the sensitivities of CSF T-SPOT.TB for patients with stages I, II, and III of TBM were 96.7%, 97.2%, and 98.9%, respectively. CSF T-SPOT.TB test is a rapid and accurate diagnostic method with higher sensitivity and specificity for diagnosing TBM.

Effect evaluation of over 5 year follow up of unilateral pedicle screw fixation with transforaminal lumbar interbody fusion for lumbar degenerative diseases / 中国骨伤

<p><b>OBJECTIVE</b>To evaluate the clinical effects of over 5 year follow up of unilateral pedicle screw fixation with transforaminal lumbar interbody fusion(TLIF) in treating lumbar degenerative diseases.</p><p><b>METHODS</b>The clinical data of 24 patients with lumbar degenerative disease underwent unilateral pedicle screw fixation with transforaminal lumbar interbody fusion from March 2007 to October 2009, were retrospectively analyzed. There were 13 males and 11 females, aged from 34 to 68 years old with an average of 52 years. Postoperative pain and functional results were analyzed by the visual analogue scale(VAS) and Oswestry Disability Index(ODI). Radiological examination was obtained for each patient to assess the height of intervertebral space, postoperative intervertebral fusion conditions and general complications.</p><p><b>RESULTS</b>All patients were followed up from 5 to 8 years with an average of 6.7 years. VAS scores of low back pain and leg pain decreased from preoperative 7.82±0.71, 8.42±1.24 to postoperative 1.87±0.81, 2.23±1.62, respectively(<0.05). ODI decreased from preoperative(53.42±8.26)% to postoperative(12.45±7.67)%(<0.05). Postoperative intervertebral space height in different segments were improved than preoperative(<0.05), but in final follow up it was decreased than 3 months after operation(<0.05). There was no significant difference in the postoperative intervertebral space height between the operated side and non operated side. But at final follow up, the intervertebral space height of non operated side was obviously loss. At final follow up, the fusion rate was 95.8%. The incidence of adjacent segment degeneration was 45.8%. The paraspinal muscle fibrosis incidence was 8.3%. No complications such as secondary scoliosis, intervertebral height loss, cage slippage, screw loosening and internal fixation breakage were found.</p><p><b>CONCLUSIONS</b>Unilateral pedicle screw fixation with TLIF is a satisfactory method and can obtain good effects in treating lumbar degenerative diseases according to over 5 year follow up, however, its indications should be well considered. But the problems such as intervertebral space height of operated side loss and adjacent segment degeneration after unilateral pedicle screw fixation need further clinical study.</p>

A pilot study on the correlation of tongue manifestation with the site of cerebral infarction in patients with stroke / 中国结合医学杂志

<p><b>OBJECTIVE</b>To discuss the correlation of tongue manifestation with the site of cerebral infarction in patients with acute cerebral infarction.</p><p><b>METHODS</b>From March 2008 to February 2009, 200 cases of hospitalized patients with first unilateral cerebral infarction were chosen in the Department of Neurology, Xuanwu Hospital. The correlation of different tongue color, fur texture, fur color with the site of cerebral infarction was analyzed.</p><p><b>RESULTS</b>The site of cerebral infarction in patients were compared between different tongue color by Chisquare test (P=0.314), and further correspondence analysis demonstrated that there was correlation between red tongue and cortical-subcortical infarction group. The site of cerebral infarction in patients were compared between thick fur group and thin fur group, cortical-subcortical infarction occurred more frequently in the former (P=0.0008). The site of cerebral infarction in patients were compared between dry fur group, moist fur group and smooth fur group, correspondence analysis demonstrated there was correlation between dry fur and cortical-subcortical group. The site of cerebral infarction in the patients were compared between white fur group, white-yellow fur group and yellow fur group (P=0.010), and correspondence analysis demonstrated there was correlation between white fur and brainstem infarction; white-yellow fur has relationship with cortical infarction; subcortical infarction was weakly related with white-yellow fur; there was closer relationship between yellow fur and cortical-subcortical infarction.</p><p><b>CONCLUSION</b>The change of tongue manifestation was associated with the site of cerebral infarction in patients, providing a new combining site for diagnosing cerebrovascular diseases by integrative medicine.</p>

A pilot study on the relationship between tongue manifestation and the degree of neurological impairment in patients with acute cerebral infarction / 中国结合医学杂志

<p><b>OBJECTIVE</b>To discuss the relationship between tongue manifestation and the degree of neurological impairment in the patients with acute cerebral infarction.</p><p><b>METHODS</b>Two hundred patients with first unilateral cerebral infarction were recruited. The relationship between different tongue manifestation and National Institute of Health Stroke Scale (NIHSS) were analyzed.</p><p><b>RESULTS</b>NIHSS scores in the patients from different tongue color groups were analyzed and further analysis demonstrated that the NIHSS score was higher in the patients with red or bluish-purple tongue than that of those with the pink (P <0.01). On tongue fur, the NIHSS score in the patients with thick fur was higher than that of those with the thin (P=0.003). NIHSS score in patients with slippery, moist or dry fur was significant different (P=0.003), Further analysis demonstrated that the NIHSS score was higher in the patients with dry fur than that of those with moist fur, and had statistical significance (P=0.01). The NIHSS score was higher in patients from greasy fur group than that of the non-greasy (P=0.002). There was significant difference of NHISS score in the patients with different fur color (P=0.000), and further analysis demonstrated that the NHISS score in white-yellow, yellow fur group were higher than that of the white (P=0.06 or 0.000).</p><p><b>CONCLUSION</b>The changes of tongue manifestation might be associated with the degree of neurological impairment in the patients with acute cerebral infarction.</p>

A cohort study on mortality and risk of death among population diagnosis as dementia, at base-line survey, in Beijing / 中华流行病学杂志

Objective To study the mortality and risk of death on dementia among ageing population.Methods A random sample including 2788 elderly residents was studied.Dementia was diagnosed under the two-phase procedure in 1997.In phase 1,questionnaire was administered,including the Mini-Mental State Examination (MMSE) tested.In phase 2,all the elderly who showed low MMSE score and some with normal MMSE score,were examined by neurologists.The clinical diagnosis of dementia was set up by two neurologists according to the criteria of DSM- Ⅲ -R and NINCDS-ADRDA.The same sample was followed up in 2000 and 2004 the same way and data on deaths and causes was gathered.The overall time for follow-up was 7.25 years.Results 171 cases with dementia were diagnosed from 2788 subjects in 1997,with a crude death rate(CDR) of dementia was 7.8 per 1000 person-years and age-standardized CDR as 5.5 per 1000 person-years.The death rate was increased exponentially with age.In the dementia group,the total number of deaths was 133,with the CDR as 236 per 1000 person-years and the age-standardized CDR as 206 per 1000 person-years,in the end of the survey.In the non-dementia group,the total number of deaths was 680,with CDR as 40 per 1000 person-years and the age-standardized CDR as 31 per 1000 person-years.The difference in the two groups was statistically significant.The hazard ratio (HR) of dementia death appeared to be the biggest in the 60-74-year group than the other groups.Data was analyzed with the Cox proportional hazards model after making necessary adjustment on potential covariates with the HR of dementia as 2.181 (95％CI:1.751-2.717).The HRs were 2.524 (95％CI:1.964-3.243) in Alzheimer's disease and 1.859 (95％ CI:1.213-2.850) in vascular dementia.Conclusion The CDR and HR of dementia were higher than the non-dementia group in the aging population,showing that dementia was one of the most important risk factors on death in the aging population.

Study on the incidence and risk factors of dementia in elderly residents from communities in Beijing / 中华流行病学杂志

Objective To study the incidence of dementia and its risk factors among the elderly living in the community of Beijing. Methods A sample of 2788 elderly residents from Beijing were investigated regarding the incidence of dementia which was diagnosed using two-stage method in 1997. In the first stage, questionnaire was filled, including MMSE checked up. In the second stage, all the elderly who had lower MMSE score and some with normal MMSE score were examined by neurologists. The clinical diagnosis of dementia was set up by two neurologists according to the criteria of DSM- Ⅲ -R and NINCDS-ADRDA. The same sample was followed up on 2000 and 2004 by the same way, with the overall time for following-up as 7.25 years. Results 171dementias cases were diagnosed among the 2788 elderly in 1997. At the end of the survey, another 180 new cases developed. The average weighted incidence was 0.84/100 person year, adjusted by age (it's same followed), with 0.64/100 person year in males and 1.01/100 person years in females. The incidence of vascular dementia was 0.35/100 person years, with male as 0.39/100 person year and female as 0.32/100 person years. The incidence of dementia was increasing with age, but decreasing with time of education by Multinomial Logistic Regression Analysis. Old age and illiterate appeared to be the risk factors for dementia. People with stroke history and elevated systolic blood pressure were risk factors for vascular dementia. Conclusion The incidence of dementia in the elderly in Beijing was higher than in other areas of China. Old age and illiterate were risk factors for dementia. Being male, illiterate, with stroke history and elevated systolic blood pressure were risk factors for vascular dementia.

Role of enzyme-linked immunospot assay and tuberculin skin test in the auxiliary diagnosis of initial pulmonary tuberculosis / 中国医学科学院学报

<p><b>OBJECTIVE</b>To compare enzyme-linked immunospot assay (ELISPOT) and tuberculin skin test (TST) and explore their roles in the auxiliary diagnosis of initial pulmonary tuberculosis.</p><p><b>METHODS</b>Totally 123 patients with initial pulmonary tuberculosis (tuberculosis group) and 102 patients with non-tuberculosis pulmonary disease (control group) were enrolled. The peripheral blood mononuclear cells of all participants were co-cultured with early secretiny antigen target-6/culture filtrate protein-10 fusion protein (ESAT-6/CFP-10), and spot forming cells (SFCs) were enumerated by ELISPOT (ESAT-6/CFP-10-ELISPOT). TST was also performed simultaneously.</p><p><b>RESULTS</b>ESAT-6/CFP-10-ELISPOT showed significantly higher numbers of SFCs after stimulation in tuberculosis group than in control group (P = 0.000). The sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, positive predictive value, and negative predictive value of ESAT-6/CFP-10-ELISPOT were 91.1% (111/123), 81.4% (82/102), 4.60, 0.12, 0.85, and 0.87 respectively, while the above values of TST were 65.6% (59/90), 45.1% (46/102), 1.31, 0.76, 0.51, and 0.60, respectively. The sensitivity and specificity of ESAT-6/CFP-10-ELISPOT were significantly higher than those of TST (all P = 0.000). The number of SFCs were not significantly different between smear-positive tuberculosis subgroup and smear-negative tuberculosis subgroup (P = 0.166). The sensitivities were 91.8% (67/73) and 88.0% (44/50) in these two subgroups, respectively, (P = 0.448).</p><p><b>CONCLUSIONS</b>ESAT-6/CFP-10-ELISPOT may be a more accurate approach for the auxiliary diagnosis of initial pulmonary tuberculosis; meanwhile, it offers certain diagnostic evidences for smear-negative tuberculosis. However, its specificity may be affected by latent tuberculosis infection. On the contrary, TST has poor value in the auxiliary diagnosis of initial pulmonary tuberculosis.</p>

Study on the relationship between somatic health and incidence of depression in the elderly / 中华流行病学杂志

<p><b>OBJECTIVE</b>In order to explore the risk factors of geriatric depression, a longitudinal follow-up study was conducted on elderly population living in the community so as to provide evidence for the development of depression prevention and control.</p><p><b>METHODS</b>A sampled population consisting 2506 elderly was selected from urban and rural communities in Beijing, using well-established sampling techniques as cluster, stratification and random selection. Data was collected by trained staff members, using standard survey instruments in 2000 and 2004.</p><p><b>RESULTS</b>Longitudinal study showed that the four-year cumulative incidence of the geriatric depression in Beijing was 10.58%. Difference on were evident intelligence/education, with the rates for illiteracy (15.2%) and primary school (10.5%) significantly higher than that of junior high school and above (5.1%) (chi2 = 26.587, P = 0.000). Rates also varied substantially with place of residence, individuals living in rural areas had a substantially higher rate of depression (15.4%) than those individuals dwelling in urban district (6.1%) (chi2 = 31.163, P = 0.000). Poor self-rated health condition (chi2 = 23.385, P = 0.000), cognitive impairment (chi2 = 11.947, P = 0.001) and limitations in physical functioning (ADL: chi2 = 15.930, P = 0.000; IADL: chi2 = 9.501, P = 0.002) were related to the worsening of depressive symptoms. Results from logistic regression analysis indicated that education level, dwelling area, self-rated health condition and ADL were the independent risk factors.</p><p><b>CONCLUSION</b>Lower educational level, dwelling situation, poor self-rated health condition as well as ADL damage might increase the incidence of depression, suggesting more attention needs to be paid to improve somatic function of elderly in order to decrease the incidence of geriatric depression and to improve the prognosis of the disease and the quality of life.</p>

Effect of Hypertension on Life Quality in Elderly / 中华高血压杂志

Objective To explore the effect of hypertension on the life quality in elderly.Methods A cohort of 1847 elderly in community in Beijing was recruited.Blood pressur,body structural and mental heath,cognition, activity and life satisfaction were evaluated by physical examination,CES-D scale,MMSE,and ADL,IADL scale.Results The life quality of the elderly hypertension was worse than those of normotensive;the morbidi- ties of chronic disease related to hypertension were higher and the cognitive ability worse with the duration of hy- pertension.The prevalence of depression was higher and the vitality was decreased as the rising of blood pres- sure.Conclusion Prevention and control hypertension improve life quality in elderly hypertension.

The relationship between coronary atherosclerotic stenosis and cerebral atherosclerotic stenosis / 中华心血管病杂志

<p><b>OBJECTIVE</b>To observe the relationship between coronary and carotid/cerebral atherosclerotic stenosis.</p><p><b>METHODS</b>Carotid/aortocranial angiography and coronary angiography were performed in 34 CAD patients complicated with symptomatic cerebral ischemia. Patients were divided into 3 subgroups according to the extent of arterial stenosis determined by angiography. There were 5 light, 4 moderate and 25 severe stenosis determined by coronary angiography and there were 6 light, 6 moderate and 24 severe stenosis determined by carotid/aortocranial angiography.</p><p><b>RESULTS</b>The extent of coronary artery stenosis was parallel to the carotid artery or vertebral artery stenosis. Twenty-four patients out of 25 patients with severe coronary stenosis had severe cerebrovascular stenosis (P = 0.873). The coincident rate was as high as 92% for patients with moderate or severe cerebrovascular stenosis whose Califf risk scores of coronary artery were more than or equal to 2. The follow-up study showed the incidence of cardiovascular event and cerebrovascular event increased significantly in the patients with moderate to severe coronary and cerebral arteries stenosis and 3 patients with severe stenosis found in both coronary and cerebral arteries died during follow up.</p><p><b>CONCLUSION</b>The incidence and severity of coronary artery stenosis is parallel with carotid artery or vertebral artery stenosis.</p>

Study on the isolated systolic hypertension and its prognosis among 2866 elderly residents at the community level in Beijing / 中华流行病学杂志

<p><b>OBJECTIVE</b>We followed a group of community residents above 60 years old to investigate how isolated systolic hypertension (ISH) could influence the prognosis in the long run among the elderly.</p><p><b>METHODS</b>A selected sample of 60 year olds and over from the Beijing residential communities was randomized ascertained to a longitudinal study. Baseline data was collected in 1993 and 11 years later in 2004, the all-cause death, mortality of cardiovascular and cerebrovascular diseases were observed and analyzed.</p><p><b>RESULTS</b>(1) The morbidity of hypertension(HT) was 61.7% and ISH was 27.8% seen in baseline survey while the SBP was increasing with age. (2) The longitudinal study showed that the total mortality and the mortality of cardiovascular and cerebrovascular diseases in HT group were higher than in the normal blood pressure(BP) group. The total mortality in the group ISH was higher than in normal BP group (55.2%: 46.2%; P < 0.01). The mortality OR for group ISH/group normal BP was 1.4 and group DSH/group normal BP was 1.6. The level of SBP was related to prognosis too which showed that the mortality appeared the lowest in 120-139 mm Hg group, and increased when the level of SBP was above 140 mm Hg.</p><p><b>CONCLUSION</b>SBP was an independent risk factor on the all-cause mortality and the mortality of cerebrovascular diseases in eldevly. ISH also appeared a risk factor on the prognosis among the elderly, suggesting that more attention should be paid to it and treatment be carefully addressed.</p>

Study on Depression of Hypertension and Associated Factors in Elderly Population in the Community of Beijing / 中华高血压杂志

Objective To explore the depression status of hypertension and analyze the associated factors in the elderly population in a community of Beijing.Methods This cohort of 1064 elderly people in the community were screened with Centerfor Epidemiology Scale(CES-D). Results Those who lived in rural(21.6% vs city 7.3%),illiterate(19.9% vs literate 11.2%),mateless(19.7% vs mate 12.4%),lower income(21.9% vs high in- come 9.8%),life accidents(23.2% vs without life accidents 8.6%),sleep disorder(31.0% vs sleep good 8.7%) and lower living abilities(26.7% vs high living ability 9.0%)had higher incidence of depression(all P

A comprehansive evaluation on stroke prevalence among elderly in urban and rural areas of Beijing, 2002 / 中华流行病学杂志

<p><b>OBJECTIVE</b>To describe the prevalence and disability of stroke as well as the stroke-related diseases among elderly in urban and rural regions of Beijing.</p><p><b>METHODS</b>In 2002, three communities were selected from urban, suburb and rural regions from Beijing areas, respectively. Twenty percent of the elderly were randomly selected from three communities. The information about history of stroke, hypertension, heart diseases and diabetes, self-rated health (SRH), activity of daily living (ADL) and instrumental ADL (IADL), smoking and drinking habits, knowledge about cardiovascular diseases prevention were collected.</p><p><b>RESULTS</b>A total of 2487 elderly were interviewed and the prevalence of stroke was 12.9% (321/2481). Eighty-seven of the stroke patients were diagnosed by CT/MRI. 19.9% of stroke patients had experienced 2 or more attacks. The highest prevalence of stroke was in the urban region and the lowest in the rural region (16.9% vs. 8.5%, P for trend < 0.01) while it was higher in males than in females (P < 0.05). The prevalence of stroke tended to increase with age in urban and 34.6% of the stroke patients had recovered completely. The proportions of poor SRH, ADL and IADL dependence, as well as the prevalences of hypertension, heart diseases and diabetes were higher among the elderly with stroke than those without. Although rates of awareness and treatment of hypertension were at the high levels among the elderly with stroke , the control rate was low, especially in the rural region (as low as 4.3%). The level of knowledge on the prevention of cardiovascular diseases, and the rates of smoking and drinking were similar between the elderly with or without stroke.</p><p><b>CONCLUSION</b>The prevalence of stroke had increased dramatically during the past decade in Beijing. The proportion of poor SHR, ADL and IADL dependence, prevalence rates of stroke related diseases were higher among the elderly with stroke than those without. Secondary prevention of stroke among Beijing elderly called for urgent action.</p>

Evaluation of predictive effect of some health-related indices on deaths among ageing residents through a 8-years' follow-up study in Beijing / 中华流行病学杂志

<p><b>OBJECTIVE</b>To study the predictive effects of some health status indicators to deaths in the elderly population.</p><p><b>METHODS</b>In 1992, a cohort of 3257 people older than 55 years old was formed from Beijing urban and suburb area. Demographic and information of activity of daily living (ADL), self-rated health (SRH), chronic diseases history and other related variables were collected at baseline survey in 1992. MMSE and CES-D were studied in 2101 on 3257 elderly people. Follow-up surveys were conducted in 1994, 1997 and 2000, to find that a total number of or= 75), resident place (suburb) and education level (illiteracy). The functional disability, poor self-rated health status, history of chronic diseases and abnormal cognition function were the major predictors of deaths. Multinomial logistic regression analysis showed that after adjustment for sex, age, residential place, education level and history of chronic diseases, functional disability, poor self-rated health status and abnormal cognition function remained as significant independent predictors to death.</p><p><b>CONCLUSIONS</b>Functional disability, poor self-rated health status and abnormal cognition function were the most valuable indicators of death. Not only they had joined predictive effects to death, but also remained relatively independent. They had important value in the evaluation on healthy prognosis and the life quality of the elderly.</p>

Study on the relationship between self-rated health situation and health status in the elderly-an 8-year follow-up study from Multidimentional Longitudinal Study of Aging in Beijing / 中华流行病学杂志

<p><b>OBJECTIVE</b>To study the relationship between self-rated health (SRH) and prevalence of chronic diseases, and all-cause mortality in the elderly population.</p><p><b>METHODS</b>In 1992, a cohort of 3257 people > or = 55 years old was selected from Beijing, the information of SRH and other related variables were collected from 3 157 subjects at the baseline survey. Three follow-up surveys were conducted in 1994, 1997 and 2000, respectively.</p><p><b>RESULTS</b>The SRH was influenced by age, gender, marriage status and satisfaction on their own economic condition. Comparing the subjects with excellent SRH, the prevalence rates of chronic diseases, stroke, heart diseases and respiratory system diseases were almost doubled among those with average and poor SRH. By 2000, 993 death occurred. All-cause mortality was negatively associated with SRH, i.e. the risk of death was 12% which was 53% higher for the subjects with average SRH (HR = 1.12, 95% CI: 0.93 - 1.35) and poor SRH (HR = 1.53, 95% CI: 1.25 - 1.88) than those with excellent SRH, respectively. The risks of death from stroke and heart disease were 2.25 (HR = 2.25, 95% CI: 1.67 - 3.04) and 2.22 (HR = 2.22, 95% CI: 1.61 - 3.07) times higher among the subjects with poor SRH than those with excellent SRH respectively. After adjustment for age, gender, resident place, marriage status, education, satisfaction on their own economic condition, seeing doctors or hospitalized within the last 1 year, history of chronic disease, cognition function, body mass index, activities of daily living and depression, as well as deleted the subjects died within first or third year of the baseline survey respectively, poor SRH remained a significantly independent predictor to all-cause death as well as to the death of stroke and heart diseases.</p><p><b>CONCLUSIONS</b>The frequency of poor SRH was influenced by age, gender, marriage status and satisfaction on their own economic condition. Poor SRH was associated with the prevalence of chronic conditions and mortality among the elderly. The findings suggested that SRH might have served as an important indicator in the evaluation on health status among the elderly.</p>