Objective To find out about the current health situation of the elderly in the Beijing area and their health care needs so as to provide basis for the formulation of health care policies for the elderly by the government and relevant departments and for the development of health care programs for the elderly in accordance with their needs. Methods A sample survey, covering such topics as the health situation, medical treatment, nursing, rehabilitation and health care needs of the elderly and community health service, was made of 2 487 elderly people aged 60 and above in different parts of Beijing, including the city proper, the part linking city and country, and the suburbs. An analysis was then made of the difference in the health situation and health care needs of the elderly between various parts and populations. Results Chronic diseases constituted the major health problem for the elderly, with hypertension, coronary heart disease, osteoarthrosis, and cerebrovascular disease ranking in the first four places and the incidence of diabetes increasing rapidly. About 10 percent of the elderly, who suffered from somatic dysfunction, had reduced daily life skills and needed assistance from others. An increased number of elderly people also meant a greater demand for medical and nursing services. Community health service, the advantages of which bacame increasingly manifest, was thus popular with the elderly. Financial difficulty was the chief factor affecting the elderly in their seeking medical service. Conclusion The elderly is a weak population in health. With the aging of the general population, the health care needs of the elderly are on the rise. As health is the major factor affecting the life quality of the elderly, enhanced efforts in the prevention and treatment of chronic diseases ought to be taken as the central task in the health care of the elderly. They are also the key to improving the life quality of the elderly.

Objective To sum up effective measures to prevent complications of peripherally inserted central catheter (PICC) by applying evidence-based nursing in patients after PICC insertion.Methods From January 2011 to January 2013,1490 patients inserted with PICC in Hunan Provincial Tumor Hospital were selected by convenience sampling,whom were divided into control group (n =758) and observation group (n =732) with random number table.The control group received routine care,while the observation group received evidence-based nursing.Nursing program for the observation group was formed based on literature regarding the causes of and solutions for phlebitis,malposition of PICC,infection of insertion sites,and hemorrhage of insertion sites.Results The incidences of postoperative phlebitis,malposition of PICC,infection of insertion sites,and hemorrhage at insertion sites in the observation group were significantly lower than those in the control group (3.14％ vs.8.97％,P=0.023;4.23％ vs.11.74％,P=0.021;3.96％ vs.8.44％,P=0.001;4.92％vs.12.66％,P =0.011).Conclusions The application of evidence-based nursing in patients with PICC insertion could effectively reduce the complication,and improve the quality of clinical nursing care.

Objective To investigate the relationship between serum uric acid (SUA) and metabolism syndrome (MS) in community-based elderly population in Beijing.Methods A community-based and cross-sectional survey on 1821 elderly person was performed in Beijing in 2000.Questionnaire survey,physical examination and blood biochemical tests were conducted.Relationship of MS and its components with SUA was analyzed.Results Among 1821 subjects,there were 365 cases with MS (20.0％) and 1456 cases without MS (80.0％).SUA level was higher in MS group than in non-MS group [(5.20±2.27) μmol/L vs.(4.50±1.44) μmol/L,t=-7.34,P=0.000].All subjects were divided into 4 groups according SUA level:goup 1 (≤3.5μmol/L,n=443),group 2 (3.6 μmol/L-4.4 μmol/L,n=465),group 3 (4.5 μmol/L-5.4 μmol/L,n=446) and group 4 (≥5.5 μmol/L,n=467).SUA level was increased along with the increased BMI,TG,TC,LDL-C levels,and decreased along with the decreased HDL-C level,which had significant differences (F=43.07,9.32,22.36,8.19,9.39,all P＜0.001).There were significant distribution differences in MS components numbers in the 4 groups (x2=73.62,P=0.000).After adjusting for age,sex,residential,education level,marriage,smoking,drinking and exercise habits,logistic regression analysis showed that MS was related with SUA level,and the risk of MS was increased along with the increased SUA level.Conclusions MS is correlated with SUA level in elderly people.SUA level should be observed and controlled effectively in the elderly.

Objective To study the effect and its possible mechanism of p66shc on endothelial dysfunction induced by hydrogen peroxide(H2O2).Methods Human umbilical vein endothelial cells (HUVEC) were used and cultured.H UVEC cells were untreated(control group)or treated with four groups of H2O2,H2O2 plus protein kinase C (PKC) inhibitors,H2O2 plus PKC activator,H2O2 plus P38 inhibitor for 30 minutes respectively,and cells were collected after 24 hours.The apoptosis,viability,proliferation of HUVEC were detected with immune fluorescent staining,MTT and Ki-67 respectively.P66shc and ser36 p66shc (p-p66shc)protein expressions were assessed using Western blotting.P66shc mRNA expression was measured with real-time quantitative polymerase chain reaction (RT-PCR).Results H2O2 induced HUVEC dysfunction which decreased HUVEC proliferation and increased the apoptosis of HUVEC.The expressions of p66shc,p-p66shc protein and p66shc mRNA were significantly increased after treating with H2O2.PKC inhibitor inhibited a H2O2 induced HUVEC dysfunction through increasing HUVEC proliferation activity and reducing cell apoptosis.The expressions of p66shc,p-p66shc protein and p66shc mRNA were significantly decreased after treating with H2O2 plus PKC inhibitor.PKC activator enhanced H2O2-induced HUVEC dysfunction and increased the expressions of p66shc.P38 inhibitor had no obvious effect on H2O2-induced HUVEC dysfunction and the expressions of p66shc.Conclusions p66shc may play an important regulatory rote in endothelial dysfunction caused by H2O2.P66shc may regulate a H2O2-induced endothelial dysfunction through PKC signal pathway.

The suppression of spiral waves and spatiotemporal chaos in cardiac tissue was studied based on cardiac model. We proposed two strategies of suppressing spiral wave and spatiotemporal chaos. One was to elevate the extracellular potassium ion concentration suddenly. This method can effectively suppress spiral waves and spatiotemporal chaos when the elevated extracellular potassium ion concentration reaches a critical value, especially when the spiral wave pinned to defects also can be suppressed. The other was to let the extracellular potassium ion concentration varies periodically while the amplitude of concentration was limited. We found that the method could effectively suppress spiral waves and spatiotemporal chaos when the related parameters were properly chosen. But it can not suppress the pinned spiral waves. And the control mechanism is discussed in this paper.
Action Potentials ; physiology ; Arrhythmias, Cardiac ; complications ; physiopathology ; Computer Simulation ; Heart ; physiology ; Humans ; Models, Cardiovascular ; Potassium ; metabolism

Animal gastrointestinal tract contains a complex community of microbes, whose composition ultimately reflects the co-evolution of microorganisms with their animal host. The gut microbial community of humans and animals has received significant attention from researchers because of its association with health and disease. The application of metagenomics technology enables researchers to study not only the microbial composition but also the function of microbes in the gastrointestinal tract. In this paper, combined with our own findings, we summarized advances in studying gastrointestinal tract microorganism with metagenomics and the bioinformatics technology.
Animals ; Gastrointestinal Tract ; microbiology ; Humans ; Hyperglycemia ; etiology ; Inflammatory Bowel Diseases ; etiology ; Metagenome ; physiology ; Metagenomics ; methods ; Obesity ; etiology

BACKGROUND: The degradable poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) has superior mechanical property and biocompatibility.OBJECTIVE: To elucidate the intravascular biocompatibility of PHBHHx in vivo.METHODS: We developed hybrid materials based on decellularized xenogenic vascular scaffolds that were coated with PHBHHx and implanted it into the abdominal aorta of New Zealand rabbits. The decellularized xenogenic pulmonary artery patch without PHBHHx coating served as the control. The implanted patches were determined for the histology, immunofluorescence staining, scanning electron microscopy and calcium contents at 1, 4 and 12 weeks after the surgery.RESULTS AND CONCLUSION: Hybrid patches exhibited smooth lumen surface without thrombus, the intimal hyperplasia was mild and recellularization was complete; immunofluorescence staining showed that the endothelial cells in the neointima were positive for CD31, with continuous single-layer arrangement, interstitial cells were positive for smooth muscle actin; the calcium content in hybrid patches was obviously lower than that in uncoated patches. PHBHHx shows a remarkable intravascular biocompatibility in vivo and is believed as an ideal candidate for lumen coating of cardiovascular tissue engineering.

BACKGROUND:Previous studies have shown that kainic acid injected into hippocampus can significantly upregulate the expression of excitatory KA1 subunit of the kainate receptor in the hippocampus, and endoplasmic reticulum stress markers, phosphorylation of the alpha subunit of eukaryotic initiation factor 2, accompanied by celldeath. OBJECTIVE:To explore the mechanism of endoplasmic reticulum stress after kainic acid is injected into the hippocampus.METHODS:0.15 nmol kainic acid was injected into the hippocampal CA1 region of 32 adult male Kunming mice, the injection time was 60 seconds. At different time points (1, 2, 3, 4, 5, 6, 8 and 12 hours) after kainic acid was injected, the Bederson score analysis was performed, and then the brain was harvested after cerebral perfusion. FJB staining of brain sections and immunofluorescence double labeled observation were also performed. RESULTS AND CONCLUSION:(1) At 3, 4, 5, 6, 8 hours after kainic acid injection, Bederson score showed severe injury of central nervous system function, and FJB staining showed the increased of celldeath in the hippocampus (P<0.05);At 1, 2, 12 hours after injection, Bederson score showed no obvious injury of central nervous system function, and FJB staining showed unobvious celldeath in the hippocampus (P>0.05). (2) According to the results of FJB staining, the brain sections were selected at 3, 8 hours for immunohistochemistry. The expressionlevels of KA1 receptors and endoplasmic reticulum stress marker P-eIF2αwere up-regulated at the same time after kainic acid was injected into hippocampus. Two single-staining KA1 and P-eIF2αimmunofluorescence images were synthesized into one over-lapped double-stained image, and two images overlapped, indicating that the up-regulated expression of KA1 and endoplasmic reticulum stress occurred in the same nerve cells. Kainic acid first up-regulated the excitatory receptor KA1 expression, which may cause cellendoplasmic reticulum dysfunction and result in the endoplasmic reticulum stress response, further promoting neuronal celldeath.

In this research, X-ray photograph and kinescope were applied to observe the whole process of barium swallowing statically and dynamically before and after acupuncture treatment by the radiography of the upper alimentary tract (RART). The observation was made on the objective changes about the functional renovation of contractor muscle of pharynx and epiglottis muscle. Among 36 cases, function of speaking basically recovered in 3 cases, function of swallowing 16 cases,function of expectorating sputum 15 c ases, and for function of water drinking 13 cases. The total effective rate: 75.0% for function of speaking, 97.2% for function of swallowing, 75.0% for function of expectorating sputum, 97.2% for function of water drinking.

Objective To investigate the risks of self-rated health in the ≥55-year elderly in Beijing and the occurrence of stroke.Methods The subjects (n=2 101;aged ≥55) from Beijing longitudinal study of aging (BLSA) were collected by Xuanwu Hospital,Capital Medical University from January 1992 to December 2016.One hundred and twenty-one subjects with stroke at baseline and 92 with incomplete information were excluded,and finally,1 888 elderly patients without cerebrovascular disease at baseline were included in the analysis.Based on the actual situation,the self-rated health was to identify an item that matched their current state from good,general to poor.The deadline for the survey was December 31,2012.The competitive risk model was used to assess the health self-rated status and the risk of stroke.Non-stroke deaths,including cancer and car accidents were treated as competitive events.Results Of the 1 888 subjects enrolled,946 (50.1%) self-rated health were good,616 (32.6%) were general,and 326 (17.3%) were poor;438 (23.2%) had stroke,751 (37.8%) had non-stroke death,and 699 (37.0%) were right censored data.Using the competing risk model and adjusting the age,sex,living area,marital status,education level,smoking,alcohol consumption,physical exercise,hypertension,diabetes mellitus,coronary heart disease,and body mass index,the occurrence of stroke in patients with poor self-rated health was 1.44 times (95%CI 1.11-1.87,P<0.01) as good as those who were good.Conclusion In the self-rated health of the elderly ≥55 years old in Beijing,the people with poor self-rated health increased the occurrence of stroke after considering the competitive risks.