Analysis of 111 cases of aristolochic acids nephropathy / 药学实践杂志

Objective To analyze the clinical characteristics and regularity of aristolochic acid nephropathy (AAN) induced by drugs containing aristolochic acid. Methods The clinical data of 111 patients with AAN induced by aristolochic acid were reviewed. The clinical features, medication and treatment of AAN were analyzed. Results Among 111 patients, there were more females than males (2.58∶1), 101 cases (90.99%) were over 50 years old； the mean age was (63.70±11.67) years old;the average duration of medication was (8.08±6.94) years. The drugs involved were Guanxinsuhe pill and Longdanxiegan pill in 106 cases (95.50%). Serum creatinine increased in 108 cases, urea nitrogen increased in 106 cases and hemoglobin decreased in 103 cases, most of which were hypogravity urine, mild to moderate proteinuria and occult blood. Ultrasonic examination revealed that the kidneys were damaged to varying degrees. Pathological biopsy of kidney showed renal tubular damage. Most patients had an insidious onset and varying degrees of progression, which were not proportional to the age and the duration of taking the medicine. In clinical, the renal function was progressively damaged, most of which were irreversible and with a poor prognosis. Conclusion Patients with renal impairment differed greatly individually, and the renal damage was not paralleled with the medication duration and dose of drugs containing aristolochic acid.AAN progressed rapidly, and the disease still progressed even after stopping taking drugs containing aristolochic acid. Strengthening pharmacovigilance, implementing early diagnosis and effective intervention could help to reduce the occurrence of AAN and attenuate its development.

RITA selectively inhibits proliferation of BAP1-deficient cutaneous melanoma cells in vitro / 南方医科大学学报

OBJECTIVE@#To screen for small molecular compounds with selective inhibitory activity against cutaneous melanoma cells with BAP1 deletion.@*METHODS@#Cutaneous melanoma cells expressing wild-type BAP1 were selected to construct a BAP1 knockout cell model using CRISPR-Cas9 system, and small molecules with selective inhibitory activity against BAP1 knockout cells were screened from a compound library using MTT assay. Rescue experiment was carried out to determine whether the sensitivity of BAP1 knockout cells to the candidate compounds was directly related to BAP1 deletion. The effects of the candidate compounds on cell cycle and apoptosis were detected with flow cytometry, and the protein expressions in the cells were analyzed with Western blotting.@*RESULTS@#The p53 activator RITA from the compound library was shown to selectively inhibit the viability of BAP1 knockout cells. Overexpression of wild-type BAP1 reversed the sensitivity of BAP1 knockout cells to RITA, while overexpression of the mutant BAP1 (C91S) with inactivated ubiquitinase did not produce any rescue effect. Compared with the control cells expressing wild-type BAP1, BAP1 knockout cells were more sensitive to RITA-induced cell cycle arrest and apoptosis (P < 0.0001) and showed an increased expression of p53 protein, which was further increased by RITA treatment (P < 0.0001).@*CONCLUSION@#Loss of BAP1 results in the sensitivity of cutaneous melanoma cells to p53 activator RITA. In melanoma cells, the activity of ubiquitinase in BAP1 is directly related to their sensitivity to RITA. An increased expression of p53 protein induced by BAP1 knockout is probably a key reason for RITA sensitivity of melanoma cells, suggesting the potential of RITA as a targeted therapeutic agent for cutaneous melanoma carrying BAP1-inactivating mutations.

Monitoring and analysis of endemic situation of schistosomiasis in Suzhou New District from 2004 to 2021 / 上海预防医学

ObjectiveTo analyze the monitoring data of schistosomiasis from 2004 to 2021 in Suzhou New District， Jiangsu Province， and to provide evidence for improving schistosomiasis elimination strategies. MethodsFollowing the Opinions on Prevention and Control of Schistosomiasis， Parasitic Diseases and Endemic Diseases in Suzhou and the Technical Plan for Prevention and Control of Schistosomiasis， Parasitic Diseases and Endemic Diseases in Suzhou， the monitoring of schistosomiasis in the population and snail habitats from 2004 to 2021 was conducted. The Mann-Kendall method and Joinpoint regression method were employed to analyze the trend of epidemic indicators （such as seropositive rate， prevalence of snail frames， etc.）. Time series analysis （exponential smoothing model） was conducted to predict snail occurrence. ResultsFrom 2004 to 2021， a total of 73 680 people were serologically tested for schistosomiasis， with a positive rate of 0.084%. The seropositivity rate showed statistically significant differences between different years （χ2=70.73， P<0.05）， but there was no significant trend over time. In addition， 3 053 fecal tests were conducted and no positive result was found. The snail habitats covered an area of 70.11 hm2 and showed a decreasing trend （Z=-1.97， P<0.05）. A total of 30 093 frames were surveyed， of which 19.038% contained snails. The difference in the prevalence of snail frames between different years was statistically significant （χ2=7 203.09， P<0.05）， with a decreasing trend in the prevalence of snail frames （Z=-2.05， P<0.05）. A total of 26 296 live snails were seized and density of live snails was 0.874 snails per frame， showing a decreasing trend in the density of live snails （Z=-2.35， P<0.05）. A total of 12 391 snails were dissected and no infected snail was found. The areas treated with molluscicides remained stable at 264.60 hm2. An area of 27.77 hm2 achieved the goal of snail eradication through environmental modification， with a decreasing trend （Z=-2.44， P<0.05）. It is estimated that the prevalence of snail frames and snail density will remain relatively stable from 2022 to 2026， but the snail habitat area will fluctuate significantly， showing an increasing trend. ConclusionNo indigenous cases of schistosomiasis and no infected snails are reported， indicating the successful consolidation of schistosomiasis prevention and control measures. However， the snail habitat area fluctuates greatly with an increasing trend， suggesting the need for long-term Oncomelania snail monitoring in local areas.

Comparative Study on Pharmacovigilance Signal Management System among the European Union ，the United States and Japan / 中国药房

OBJECTIVE：To provide reference for constructing and improving the pharmacovigilance signal management sys - tem in China by comparing signal management system among the European Union （EU），the United States （U. S. ）and Japan. METHODS：Literature analysis method was used to systematically compare the similarities and differences on definitions ，sources， detection methods and management process of pharmacovigilance signals among EU ，U. S. and Japan. Some suggestions were put forward for pharmacovigilance management in China. RESULTS & CONCLUSIONS ：Regulatory authorities of the EU ，U. S. and Japan did not have a uniform definition on signals ；EU drug administration adopted the definition of the eighth working group of Council for International Organizations of Medical Sciences ，FDA adopted its own definition ，while the Japanese regulatory agency had no clear definition. Currently ，post-marketing surveillance still relied mainly on spontaneous reporting systems ；EU，U. S. and Japan had carried out the signal detection based on the spontaneous reporting system ；EU mainly adopted the proportional reporting ratio method ，U. S. mainly adopts the multiple gamma Poisson Shrinker ，and Japan mainly adopted the reporting ratio method. EU had special guidelines for signal management process ，while the U. S. and Japan did not. It is recommended to accelerate the deve- lopment of the legal and regulatory framework on pharmacovigilance in China ，draw up guidelines on pharmacovigilance practices ， strengthen the active ADR surveillance and promote the application of data mining techniques in signal detection field ，for accelerat - ing the standardization and internationalization of China ’s pharmacovigilance work.

The protective effects of different dosages of curcumin on lung injury of rats in dry heat environment / 中华急诊医学杂志

Objective:To study the protective effects of different concentrations of curcumin on lung injury of rats in dry heat environment.Methods:Fifty Sprague-Dawley rats were randomly (random number) divided into five groups ( n = 10 each group): normal control group (NC), dry heat control group (DHC), and three different concentrations of curcumin pretreated dry-heat groups (50 mg/kg, 100 mg/kg, and 200 mg/kg). Rats in the NC and DHC groups were given a gavage of normal saline, and rats in the curcumin pretreatment groups were given a gavage of curcumin with different concentrations, once a day for 7 consecutive days. At 8th day, all groups except for the NC group were transferred to the climate cabin (The Simulated Climate Cabin for Special Environment of Northwest of China), with a temperature of (41 ± 0.5) and relative humidity of (10 ± 1)%. Rats in each group were anesthetized and sampled after reaching the state of heat stroke at 150 min, and same done to the NC group. Lung tissues were harvested and pathological changes were observed by HE staining. Lung wet/dry (W/D) weight ratio was detected and lung injury indicators such as total protein, white blood cell count and neutrophil count in bronchoalveolar lavage fluid (BALF) were also determined. Results:The lung injury pathology score, W/D weight ratio, total protein, white blood cell count and neutrophil count in BALF were the lowest in the NC group, and the highest in the DHC group, with significant difference ( P <0.01). With the increase of the concentration in the curcumin pretreatment groups, lung injury pathology score, W/D weight ratio, total protein, white blood cell count and neutrophil count in BALF were all declined. There were significant differences among the different concentration groups of curcumin and the NC and DHC groups ( P <0.01). Correlation analysis indicated that lung injury scores were correlated with W/D weight ratio of lung tissue, alveolar total protein content in BALF, white blood cell count, and neutrophil count (correlation coefficient r = 0.879, r = 0.935, r = 0.916, and r = 0.880, respectively, P <0.01). Conclusions:Pretreatment with different concentrations of curcumin can exert protective effects on lung injury of heat stroke rats in dry heat environment. Curcumin may have important clinical value in prevention and treatment of lung injury caused by heat stroke in dry heat environment.

Effect of curcumin on expressions of CD11b and CD19 in peripheral blood of heat stroke rats in a simulation dry-heat environment / 中华危重病急救医学

Objective? To?investigate?the?effects?of?different?doses?of?curcumin?on?the?levels?of?immune?factors?CD11b?and?CD19?in?peripheral?blood?of?heat?stroke?rats?in?a?simulation?dry-heat?environment.? Methods? 160?SPF??healthy?male?Sprague-Dawley?(SD)?rats?were?selected?and?divided?into?different?groups?according?to?random?number?table?method:?normal?saline?(NS)?control?group?(given?NS),?solvent?control?group?[given?sodium?carboxymethylcellulose?(CMCNa)],?and?curcumin?low,?medium?and?high?dose?pretreatment?group?(given?0.05,?0.10,?0.20?mg/g?of?curcumin+0.5%?CMCNa?solution).?There?were?32?rats?in?each?group,?and?were?challenged?only?by?10?mL·kg-1·d-1?lavage,?and?continuous?dosing?for?7?days.?On?the?8th?day,?rats?were?challenged?at?ambient?temperature?(41.0±0.5)?℃,?relative?humidity?(10±1)%?of?the?northwest?in?the?special?environment?of?artificial?lab,?placed?in?0?(normal?temperature),?50,?100?and??150?minutes?respectively.?The?levels?of?CD19?and?CD11b?in?peripheral?blood?of?each?rat?were?detected?by?flow?cytometry?instrument.? Results? With?the?extension?of?time?in?the?simulated?dry?and?heat?environment,?the?level?of?CD11b?in?peripheral?blood?was?gradually?increased?in?each?group,?and?the?peak?value?was?reached?at?150?minutes,?the?NS?control?group,?solvent?control?group?and?curcumin?low,?medium?and?high?dose?pretreatment?groups?were?0.346±0.013,?0.342±0.013,?0.342±0.012,?0.325±0.012,?and?0.281±0.012,?respectively.?In?each?group,?the?level?of?CD19?was? first?increased?and?then?decreased,?reaching?its?peak?value?at?100?minutes,?and?the?level?of?the?NS?control?group,?solvent?control?group?and?curcumin?low,?medium?and?high?dose?pretreatment?groups?were?0.586±0.010,?0.601±0.014,?0.684±0.009,?0.613±0.012?and?0.604±0.006,?respectively.?The?level?of?CD11b?in?the?curcumin?medium?and?high?dose?pretreatment?groups?were?significantly?lower?than?those?in?the?NS?control?group?and?solvent?control?group??(50?minutes:?0.237±0.011,?0.188±0.006?vs.?0.283±0.009,?0.289±0.012;?100?minutes:?0.260±0.010,?0.248±0.008?vs.?0.293±0.008,?0.290±0.007,?all?P?<?0.05),?and?after?placement?for?150?minutes,?the?level?of?CD11b?in?the?curcumin?high?dose?pretreatment?group?was?significantly?lower?than?that?in?the?NS?control?group,?solvent?control?group?and?curcumin?low?dose?pretreatment?group?(0.281±0.012?vs.?0.346±0.013,?0.342±0.013,?0.342±0.012,?all?P?<?0.05).?The?level?of?CD19?in?the?curcumin?low,?medium?and?high?dose?pretreatment?groups?were?significantly?higher?than?those?in?the?NS?control?group?and?solvent?control?group?at?50?minutes?in?the?dry?and?hot?environment?(0.394±0.001,?0.436±0.009,?0.553±0.011?vs.?0.205±0.005,?0.197±0.003,?all?P?<?0.05),?at?100?minutes,?the?level?of?CD19?in?the?curcumin?low?dose?pretreatment?group?was?significantly?higher?than?that?in?the?NS?control?group?and?solvent?control?group?(0.684±0.009?vs.?0.586±0.010,?0.601±0.014,?both?P?<?0.05),?there?was?no?significant?difference?in?CD19?level?between?the?other?dose?pretreatment?groups?and?NS?control?group;?at?150?minutes,?there?was?no?significant?difference?in?CD19?level?between?the?curcumin?pretreatment?groups,?the?NS?control?group,?and?the?solvent?control?group.?The?peripheral?blood?immune?factors?CD11b?and?CD19?levels?in?the?NS?control?group?and?solvent?control?group?were?not?significantly?changed,?and?there?was?no?significant?difference?between?two?groups.? Conclusion? Curcumin?pretreatment?can?reduce?the?level?of?CD11b?and?increase?the?level?of?CD19?in?peripheral?blood?of?rats?with?dry?heat?stroke?in?the?early?and?middle?stages,?which?may?enhance?the?heat?resistance?and?prevent?the?occurrence?of?multiple?organ?dysfunction?by?increasing?the?body?immunity,?and?this?effect?has?nothing?to?do?with?the?dose?of?curcumin.

Association of plasma albumin and hypersensitive C-reactive protein with 5-year all-cause mortality among Chinese older adults aged 65 and older from 8 longevity areas in China / 中华预防医学杂志

Objective@#To investigate the relationship of plasma albumin and hypersensitive C-reactive protein (Hs-CRP) with 5-year all-cause mortality among Chinese older adults aged 65 and older.@*Method@#Data was collected in 8 longevity areas of the Chinese Longitudinal Healthy Longevity Survey (CLHLS) study conducted by Chinese Center for Disease Control and Prevention and Peking University at baseline survey in 2012 and 2014, the participants enrolled in 2012 was followed-up in 2014 and 2017, the participants enrolled in 2014 was followed-up in 2017 only. Finally, 3 118 older adults aged 65 and older with complete information on albumin, Hs-CRP and body mass index (BMI) were included in this study. Plasma samples of older adults were collected for the detection of albumin and Hs-CRP at baseline survey. Survival status and follow-up time was recorded for all participants. All older adults were divided into 4 groups according to the levels of plasma albumin and Hs-CRP, and Cox proportional hazard models were constructed to assess their influence on the risk of all-cause mortality.@*Results@#Among 3 118 older adults included, the prevalence of hypoalbuminemia was 10.1% (316/3 118), and was 22.8% (711/3 118) for elevated Hs-CRP. During 10 132 person-years of follow-up, 1 212 participants died. Participants with hypoalbuminemia had increased risk of all-cause mortality, with an hazard ratio (HR) and 95% confidential interval (CI) of 1.18 (1.01-1.38), compared to participants with normal plasma albuminemia; participants with elevated Hs-CRP had increased risk of all-cause mortality, with an HR (95%CI) of 1.18 (1.04-1.35), compared to participants with normal plasma Hs-CRP. Participants with normal plasma albumin and elevated Hs-CRP, with hypoalbuminemia and normal Hs-CRP, with hypoalbuminemia and elevated Hs-CRP also had increased risk of all-cause mortality when compared to those with normal plasma albumin and normal Hs-CRP, the HR (95%CI) were 1.16 (1.01-1.34), 1.11 (0.91-1.37) and 1.43 (1.11-1.83), respectively.@*Conclusion@#Hypoalbuminemia and elevated Hs-CRP were responsible for increased risk of 5-year all-cause mortality among Chinese older adults from 8 longevity areas.

Short-term communication effects of the "Healthy Lifestyle for All" promotion workshops held during September 2018 in China / 中华健康管理学杂志

Objective@#To explore the short-term effects of communicated activities regarding the China Healthy Lifestyle for All workshop held during September 2018.@*Method@#"National action for three reductions and three health activities" and related content ( "salt reduction," "oil reduction," "sugar reduction," "oral health," "healthy bones," and "healthy weight" ) were used as keywords. Starting September 1, thematic publicity topics were launched and implemented throughout the month. The National Action Office issued promotional materials one day in advance through the WeChat Work Group known as the health promotion network in the mainland, which had been developed by members from different provinces, cities, and counties, to disseminate the materials for use both offline and online. Using search engines such as Baidu search and Sogou search, a third-party professional evaluation agency intelligently captured relevant information and texts from various organizations (including provinces, cities, and countries). The information was gathered and sorted according to different channels and forms; thereby, a database was formed for analysis. The content analysis method was used to quantitatively analyze the change trend of the release volume of related reports, and classified statistics were conducted according to different communication channels and forms. Baidu index, WeChat interactive volume, WeChat index, and Weibo hit times were used for evaluation. Researchers analyzed the difference of release volumes in different provinces (municipalities directly under the central government and autonomous regions), as well as in eastern and central regions.@*Results@#The daily communication trend increased significantly after September, with 42 176 reports on related topics, peaking on September 3 (2 703 reports in a single day); effects of the topic establishment and publicity were shown during the entire month. The Badu index showed the same tendency. The keywords "three reductions," "three health," "all-people action," "oil reduction," "sugar reduction," "salt reduction," "oral health," "healthy bones," and "healthy weight" had become high-frequency words. From the perspective of communication channels, there were 17 576, 11 453, and 8 034 reports by WeChat, the news, and Weibo, respectively, accounting for 41.76%, 27.16%, and 19.05% of the total; these report rates were obviously higher than those of other communication channels. WeChat’s interactions reached 4 064 699, and the WeChat index rose to a peak of 858 275 on September 1, which was 194.44 times higher than on August 10 (before the promotional month); additionally, the number of micro-blogging hits reached 130 907 879. Regarding the form of presentation, in descending order, the most frequent type was graphics, followed by star propaganda, radio drama, and health super material. In addition, the gap between the top five provinces ranked by each channel was large. The number of daily releases varied significantly among provinces (municipalities and autonomous regions), with Beijing taking the top spot with 81 articles, while the western provinces of Xinjiang, Ningxia Hui Autonomous Region, Qinghai Province, and Tibet had relatively low daily releases. Even the gap of rank among the top five in WeChat, news, and individual micro-blogs were larger: Beijing, Shandong Province, and Zhejiang Province were the country’s top three regions in WeChat publishing volume. The communication effect in the eastern, central, and western regions was considerably different, with the eastern region clearly responding better than the other two regions, and the western region had insufficient propaganda capacity as a whole.@*Conclusion@#The communication effect of the China Healthy Lifestyle for All month activities in 2018 was quite effective, but the gap in communication effect by provinces was large.

Evaluation on the effect of salt reduction intervention among fourth-grade primary school students and their parents in Shandong Province / 中华预防医学杂志

In order to evaluate the intervention effect of the school-based salt reduction model, 28 primary schools were selected in Shandong Province in September 2014 and randomly divided into intervention group (1 361 students, 1 306 parents) and control group (1 364 students,1 340 parents). A series of "small hands and big hands" salt reduction intervention activities were conducted in intervention group for 8 months. After the intervention, the total awareness rate of salt reduction knowledge, the total holding rate of related beliefs and the total reporting rate of related behaviors were 70.65%, 80.30% and 67.03% among students, and 85.66%, 93.77% and 87.93% among parents, in the intervention group, which were higher than those in the control group (37.12%, 66.52% and 50.07% among students; 55.11%, 87.52% and 57.96% among parents) (all P values <0.05). The school-based salt reduction model is effective and feasible.

The features of serum K+variation in swine with traumatic hemorrhagic shock within the dry-heat environment / 中华急诊医学杂志

Objective To observe the changes of potassium ion (K+), lactic acid (Lac) and glucose (Glu) in swine with traumatic hemorrhagic shock (THS) inside the dry-heat environment and to explore its possible mechanism. Methods A total of 40 local Landrace piglets were randomly(random number) divided equally into 4 groups: the normal temperature sham operation group (NS), the normal temperature traumatic hemorrhagic shock group (NTHS), the dry-heat sham operation group (DS group) and the dry-heat traumatic hemorrhagic shock group (DTHS). The experiment was carried out in the artifi cia climate cabin simulated the special environment of northwest of China. After exposed to their respective environment[dry-heat environment: (40.5±0.5), plus(10±2)% humidity; normal temperature environment: (25±0.5), plus(35±5)% humidity] for 3 h. Laparotomy were performed in swine of all groups, and then splenectomy and partial hepatectomy were performed only in NTHS and DTHS. The process of exsanguination from the external iliac artery was established to make the MAP reaching to 40-50 mmHg, and thus the traumatic hemorrhagic shock model of swine was successfully made. Blood samples were collected from external iliac artery at different intervals including the time just after exposure for 3 h and the successful establishment of traumatic hemorrhagic shock model (0 h) and then every 30 min after 0 h, serum levels of K+, Lac and Glu were detected. The features of varied serum K+, Lac and Glu were observed in each group. All data were statistically analyzed using One-way ANOVA and Pearson correlation analysis. Results After exposed , the level of serum K+inside the dry-heat environment was higher than that of swine inside the normal temperature group ( P<0.01), however the Glu level was lower in the swine inside dry-heat environment than that of swine inside the normal temperature ( P<0.01).The level of serum K+and Lac of DTHS group were rapidly increased from the establishment of the model to the death in about 3 h, while those of NTHS group were increased slowly. The level of K+and Lac were positively correlated in the two groups amd the correlation coeffi cient were rDTHS=0.927 (P<0.01) and rNTHS=0.539 (P<0.01),respectively. The level of Glu was progressively decrease in DTHS group, while in NTHS group, it was not noticeable. The level of K+and Glu were negatively correlated in the two group, the correlation coeffi cient were rDTHS=-0.804 (P<0.01) and rNTHS=0.420 (P<0.01),respectively. Conclusions The changes of serum K+, Lac and Glu occurred sooner and more obvious in traumatic hemorrhagic shock models inside dry heat environment (DTHS) group than those in NTHS group. The level of serum K+positively correlated with Lac, however, negatively correlated with Glu, which suggested that hyperkalemia and acidosis should be paid more attention to the treatment of traumatic hemorrhagic shock inside the dry heat environment, and the hypoglycemia should be treated at the same time.

Characteristics of Pathological Injury of Intestinal Tract in Rats under Hypobaric Hypoxia Environment at Different High Altitude / 现代生物医学进展

Objective:To study the characteristics of intestinal tract pathological injury of rats in hypobaric hypoxia at different high altitude.Methods:30 male SD rats were randomly divided into 5 groups:Plain group (n=6),High-altitude (HA) 5000 m for 10 day group(n=6),HA 5000 m for 21day group(n=6),HA 6500 m for 10day group(n=6),HA 6500 m for 21day group (n=6).Rats were raised normally either in plain or simulated high altitude environment,at the corresponding time point,rats were euthanized,small intestines were harvested,fixed tissues were processed routinely into paraffin and sections were stained routinely with hematoxylin and eosin.Morphologic parameters were measured by optical microscope and then the pathological injury score were evaluated.Results:The pathological injury scores ofjejunnm and ileum in the high altitude group were significantly higher than that of the plain group (P＜0.01),the pathological injury scores of jejunum,ileum and colon were significantly higher in the HA 5000 m for 21 day group than that of the HA 5000 m for 10 day group,but significant lower than that of the HA 6500 m for 21 day group,the pathological injury scores of jejunum,ileum and colon were significantly higher in the HA 6500 m for 10 day group than that of the HA 5000 m for 10 day group(P＜0.01,P＜0.05).The pathological injury scores of colon were significantly higher in the groups of the high altitude than the plain group except for the HA 5000 m for 10 day group (P＜0.01,P＜0.05).The pathological injury scores of jejunum had significant different with that of the colon in the HA 5000 m for 21 day group (P＜0.05);the pathological injury scores of both jejunum and ileum had significant different with that of the colon in the HA 6500 m for 21 day group(P＜0.05,P＜0.01).Conclusions:The injuries of the intestinal mucosa became serious with the with rising altitude and the stayed time,the intestinal injuries were more serious than that of colon at same situation,however there were no significant different between jejunum and ileum,the injuries of colon happened later than intestine,and they correlated with the stay time in the high altitude,which indicated that intestinal injury should be pay more attention in the early time of entering the hypobaric hypoxia environment of the high altitude.

A perspective cohort study on influence factors of survival outcome among the elderly aged ≥80 years old from longevity areas in China / 中华预防医学杂志

Objective@#To investigate the influence factors of survival outcome among elderly aged ≥80 years old.@*Methods@#In baseline survey in 2009, 930 participants aged ≥80 years old were enrolled from 7 longevity areas, to collect the information of socioeconomic factors, life style, cognitive function, activities of daily living and diseases, as well as physical examination to test biomarkers of blood and urine. The survival status was followed up at 2012 and 2014 survey. Stepwise Cox proportional hazards models were used to screen influence factors of 5-year survival.@*Results@#During 5 years of follow-up, 571 participants died, 133 participants were lost to follow up, and the all-cause mortality was 63.4%. In stepwise Cox proportional hazards models, male, unmarried, self-reported poor life quality, disability in daily life, cognitive impairment, cardiovascular and cerebrovascular diseases, chronic kidney diseases were risk factors for elderly survival outcome, with the HR (95%CI) at 1.75 (1.40-2.12), 1.49 (1.10-2.03), 1.40 (1.16-1.69), 1.37 (1.11-1.70), 1.51 (1.22-1.88), 1.62 (1.18-2.23) and 1.48 (1.23-1.77) respectively. Each 1 year increase in age corresponded to 4% increase in mortality risk (HR (95%CI)=1.04 (1.02-1.05)); each 1 kg/m2 increase in BMI corresponded to 5% increase in mortality risk (HR (95%CI)=0.95 (0.93-0.98)); each 1.0×109/L increase in total lymphocyte count (TLC) corresponded to 13% increase in mortality risk (HR (95%CI)=0.87 (0.76-0.99)). Additionally, the mortality risk decreased 19% (HR (95%CI)=0.81 (0.66-0.98)) in participants with regularly physical exercise compared to those without; and the mortality risk decreased 41% (HR (95% CI)=0.59 (0.40-0.88)) in participants with elevated triglycerides (TG, ≥2.26 mmol/L) compared to those without.@*Conclusion@#In Chinese longevity areas, some nutritional and immune indices such as relatively higher level of BMI, TLC and TG were independent protective factors for 5-year survival outcome, which was different from general adults and younger elderly.

Relationship between the successful aging and survival status among the elderly from longevity areas in China / 中华预防医学杂志

Objective@#To explore the relationship between successful aging (SA) index and the survival status among elderly from longevity areas of China.@*Methods@#A total of 2 296 old people aged ≥65 years old from 8 longevity areas were enrolled in our baseline survey in 2012. The information of demographics characteristic, life style, self-assessed health and mood or emotional state, cognitive function, abilities of daily living and physical activity were collected by questionnaire. There were 891 SA people in total, whose SA score was 4-5. 891 SA and 1 396 non-SA participated in the follow-up study in 2014. Finally, 860 SA and non-SA people were matched by orientation analysis. A Cox proportional hazards model was used to explore the relationship between successful aging index and survival status.@*Results@#After 2 years of follow-up, a total of 1 442 elderly survived, with an average baseline age at (83.69±10.81) years old and 278 elderly people died, with an average baseline age at (93.41±9.05) years old. The mortality rate was 16.16% (278/1 720) in total, and it was 13.14% (113/860) in SA group, which was lower than it in non-SA group (19.19%, 165/860), and the difference was statistically significant (P=0.001). The analysis of the multivariate Cox regression showed that SA was the protective factor of the survival of the elderly after age and sex adjusted. Compared to the non-SA group, the risk of mortality rate in SA group decreased by 38%, the HR (95% CI) was 0.62 (0.49-0.79).@*Conclusion@#The mortality rate in the SA group was low in the longevity areas in China; compared with non-SA group, the death rate in SA group reduced by 38%.

Follow-up study of body mass index and risk of cognitive impairment among elderly adults aged ≥65 years old from longevity areas of China / 中华预防医学杂志

Objective@#To discuss the relationship between body mass index (BMI) and cognitive impairment among elderly adults aged ≥65 years old from longevity areas of China.@*Methods@#A total of 2 439 elderly adults from 8 longevity areas were included in our baseline survey by answering questionnaire and taking body measurements and blood biochemical examinations in 2012. In the follow-up study in 2014, we studied the cognitive impairment status among the 1 135 elderly adults aging ≥65 years old. Multivariate logistic regression model was used to analyze the relationship between BMI and cognitive impairment risk.@*Results@#113 participants were defined as cognitive impairment, with a positive rate at 10.0%. The positive rate in group of underweight, normal weight, and overweight and obese elderly were 22.2% (51/230), 7.5% (47/629), 5.4% (15/276). The rate of cognitive impairment in groups of low BMI (<19.7 kg/m2), middle BMI (19.7-23.1 kg/m2) and high BMI (>23.1 kg/m2) were separately 17.7% (66/372), 7.1% (27/379) and 5.2% (20/384) (P<0.001). Every 1.0 kg/m2 increase in BMI, the risk of cognitive impairment would significantly decreased by 7% (RR(95%CI): 0.93(0.87-0.99)). Compared with participants with middle BMI level, the group of low BMI participants was associated with a significantly increased risk of cognitive impairment (RR (95% CI): 1.98(1.14-3.44)); while there was no significant association was observed in the high BMI group (RR(95%CI): 1.15(0.57-2.32)). Compared with elderly in normal weight, the elderly with under weight was in higher risk of cognitive impairment (RR (95%CI: 2.19(1.31-3.66)) and there was no significant association found between the elderly with overweight (RR(95%CI): 1.18(0.58-2.38)).@*Conclusion@#Among the elderly ≥65 years old from longevity area, low BMI level and underweight were associated with the increased risk of cognitive impairment.

Association between biomarkers and activities of daily living in the elderly ≥65 years old from longevity areas in China / 中华预防医学杂志

Objective@#To explore the association between biomarkers and activities of daily living (ADL) in the elderly over 65 years old from longevity areas in China.@*Methods@#A total of 2 439 people from 8 longevity areas were included in our baseline survey in 2012. Using questionnaires, body measurements, and blood biochemical examinations, information on demographics characteristic, life style, ADL, blood pressure and biomarkers were collected. Based on these six items of ADL (bathing, dressing, indoor activities, toileting, eating, bowel and bladder control), we constructed a dichotomous indicator for ADL. A respondent was defined as ADL disabled if any difficulty in one or more of the above six activities was reported. Information were collected in the follow-up in 2014 using the same questionnaires and examinations. We excluded information on the elderly who lacked ADL or biomarkers test results or with ADL disability at baseline study. Finally 938 elderly people over 65 years old were included in this analysis. Multivariate logistic regression model was used to analyze the influence factors of ADL disability.@*Results@#During the 2-year follow-up, 100 (10.7%) participants developed into ADL disability, with a rate at 10.7%. Multivariate logistic regression analysis indicated that each year increase in age or each 1 mmHg (1 mmHg=0.133 kPa) increase in systolic blood pressure (SBP) would cause the risk of ADL disability to increase 9% or 1%, whose OR (95%CI) were separately 1.09 (1.06-1.12), 1.01 (1.00-1.02). Han nationality or cognitive impairment increased the risk of ADL disability, whose OR (95%CI) values were separately 4.90 (1.13-21.24), 2.47 (1.44-4.25), while increased lymphocyte count (>1.60×109/L), being married, or participating in recreational activities decreased the risk of ADL disability, whose OR (95%CI) values were separately 0.51 (0.31-0.82), 0.52 (0.28-0.96), 0.43 (0.23-0.80).@*Conclusion@#In the elderly elevated lymphocyte count was associated with lower risk of ADL disability. In addition, incresed age, increased SBP, unmarried, Han nationality or cognitive impairment were associated with the increasing risk of ADL disability in older people, while participating in recreational activities would reduce the risk.

Study on handgrip strength of elderly ≥60 years old from longevity areas in China / 中华预防医学杂志

Objective@#To assess the status of handgrip strength of elderly population from longevity areas in China, and to analyze the correlative factors of handgrip strength of elderly people.@*Methods@#Data from Chinese Longitudinal Healthy Longevity Survey (CLHLS) in 2012 was used, from which1 967 participants aged ≥60 years old with valid data of grip strength value from 8 Chinese longevity areas were included. Information on demographics characteristic, life style and health status was collected using questionnaires. The handgrip strength of both left and right hands were measured by grip dynamometer. The different characteristics of group of participants with different grip strength were compared and then analyzed by adopting the Cumulative odds Logistic regression model to identify main factors associated with hand grip strength.@*Results@#The P50 (P25-P50) of hand grip strength of elderly people from the eight longevity areas was 20 (11-28) kg; The hand grip strength of males was 26 (18-34) kg, which was higher than that of females(14 (9-20) kg) (P<0.001). Cumulative odds Logistic regression model showed that the hand grip strength of females was lower than males, whose β value (95%CI) was-1.22 (-1.43--1.00). The elderly who was at a higher age, smoking, drinking or with anemia, had a comparatively lower handgrip strength, whose β (95%CI) value were separately-0.08(-0.09~-0.07),-0.29(-0.56~-0.02),-0.54(-0.80~-0.28), and-0.41(-0.62~-0.20). And the elderly who had a higher boby mass index, drinking tea and outdoor activities, had a comparatively higher handgrip strength, whose β(95%CI) value were separately 0.28 (0.15-0.40), 0.25(0.03-0.47) and 0.51(0.30-0.71).@*Conclusion@#Age and gender were the main correlative factors, lifestyles and physical conditions might also be correlative factors of hand grip strength of the elderly from longevity areas in China.

The expression and significance of circulating microRNA of rats with hypobaric hypoxia-induced pulmonary hypertension / 西安交通大学学报(医学版)

Objective To investigate the expression of circulating microRNA (miRNA) of rats with hypobaric hypoxia‐induced pulmonary hypertension (HPH) .Methods Commercial rat miRNA microarray was employed to detect and analyze the circulating miRNA profile in the serum samples of Sprague‐Dawley rats with hypobaric hypoxia‐induced HPH and controls .Furthermore ,differentially expressed candidate circulating miRNAs between HPH and control groups were validated by Real‐time quantitative PCR based on the case‐control study ,and receiver operating characteristic curve (ROC ) analysis was used to test the performance of four differentially expressed circulating miRNAs in discriminating HPH and control groups .Results Compared with those in the control group ,13 upregulated miRNAs and 10 downregulated miRNAs were identified in hypobaric hypoxia‐induced HPH rats by using miRNA microarray . And differentially expressed miR‐451 , miR‐505 , let‐7d and miR‐214 were validated by using RT‐PCR .ROC analysis showed that the area under the curve of miR‐451 ,miR‐505 and let‐7d was 0 .979 ,0 .938 and 0 .993 in discriminating HPH and control groups ,respectively .Conclusion The aberrant expression of circulating miR‐451 ,miR‐505 and let‐7d in serum may be correlated with the pathogenesis of HPH .

Several issues should be mentioned before pathological specimen processing / 中国比较医学杂志

Experimental pathology is an important part of life science research associated with animal experiment. Acquisition and fixation of optimum specimen and subsequent section of paraffin embedded tissue and dyeing are key factors playing important role in reliability, authenticity of pathological diagnosis.This paper summarizes the problems encountered in pathological section making of animal experiment and it correspond solutions.

Functional study of hENT1 on SKM-1 cell resistance to decitabine / 中华血液学杂志

<p><b>OBJECTIVE</b>To investigate the effect of human equilibrative nucleoside transporters 1 (hENT1) silencing on proliferation, apoptosis and demethylation of human myelodysplastic syndrome (MDS) derived cell line SKM-1 treated with 5-aza-2'-deoxycytidine (decitabine, DAC).</p><p><b>METHODS</b>hENT1 was silenced in SKM-1 cells mediated by lentivirus transfection. The infection efficiency was detected by flow cytometry, and the mRNA expression level of hENT1 was confirmed by qRT-PCR. The proliferation ratio of SKM-1 cells treated with different concentrations (0.5, 1, 5 mmol/L) of DAC for 24, 48 and 72 h was detected by CCK-8 method after hENT1 silencing. The apoptosis of SKM-1 cells was detected by Western blot for cleaved level of caspase-3 and evaluated by flow cytometry after staining with anti-Annexin V-PE and 7-AAD. The p15(INK4B) DNA methylation status was measured by methylation specific PCR using EZ DNA Methylation-Gold™ Kit.</p><p><b>RESULTS</b>The expression level of hENT1 silenced group (0.253±0.030) was statistically decreased compared with that in control group (1.000±0.091) (P<0.01). Compared with control, the proliferation inhibition rate of hENT1 silenced group was significantly decreased by different concentrations of DAC (0.5, 1, 5 μmol/L) treatment for 24, 48, 72 h (P<0.05), which was (49.41±4.02)% and (33.03±2.47)%, respectively (P=0.007) at 5 μmol/L DAC treatment for 72 h in hENT1 silenced group and the control group. Western blot showed that cleaved caspase3 of hENT1 silenced group was also significantly inhibited. The percentage of Annexin Ⅴ⁺ cells and demethylation status of p15(INK4B) were significantly decreased.</p><p><b>CONCLUSION</b>Apoptosis of hENT1 silenced SKM-1 cells induced by DAC was decreased, and the susceptibility of these cells to demethylation treatment was also decreased.</p>

Analysis on sleep duration of 6-12 years old school children in school-day in 8 provinces,China / 中华流行病学杂志

Objective To analyze the influencing factors for sleep duration of school children aged 6-12 years in school-day in 8 provinces in China.Methods The cross sectional study was conducted among 20 603 children aged 6-12 years and selected through stratified random cluster sampling in 8 provinces (municipality and autonomous region) with different geographic characteristics and economic development level in China from September to November,2010 to understand their sleep duration in school-day and related habits.t test and x2 test were used to compare the sleep duration of the children.Multivariate stepwise logistic regression analysis was conducted to identify the influencing factors.Results The survey indicated that the daily average sleep duration of the children in school days was 9.11 hours.The proportions of the children with serious insufficient sleep,insufficient sleep and sufficient sleep were 32.82％ (7 672/20 603),39.70％ (8 179/20 603) and 27.48％ (5 662/20 603),the children's sleep duration declined with age,so did proportion of children with serious insufficient sleep.There were no sex,urban or rural area and household income level specific significant differences in sleep duration among the children surveyed,and there were no sex specific differences in the proportion of children with serious insufficient sleep,insufficient sleep and sufficient sleep,however,these proportions were statistically different between urban area and rural area and among the regions with different economic level.The proportions of children with serious insufficient sleep and sufficient sleep was higher in rural area than in urban area (x2=59.96,x2=45.47,P＜ 0.05),while the proportion of children with insufficient sleep was lower in rural area than in urban area.In the economy developed region,the proportion of children with insufficient sleep was lowest,the difference was statistical significant.After adjusting for sex,weight,diet and exercise time,multivariate logistic regression analysis showed that the factors benefiting children to have 10 hours sleep every day included having high protein diet,exercise,high household economic status and living in urban area.Conclusion The problem of school children having insufficient sleep was serious in China,especially in the rural area.