Distribution characteristics of body mass index among Chinese oldest-old aged 80 years and above / 中华流行病学杂志

Objective: To investigate body mass index (BMI) level, identify the main type of nutritional problem, and describe the population distribution characteristics of BMI among Chinese people aged 80 years or above. Methods: The data of 9 481 oldest-old individuals were obtained from the 2017-2018 Chinese Longitudinal Healthy Longevity Survey. The Lambda-Mu-Sigma method, weighted estimates of BMI, and comparisons by BMI quintiles were used to describe the BMI level and distribution characteristics among the oldest-old. Results: The average age of the participants was (91.9±7.7) years, with P50 of the weighted BMI at 21.9 (95%CI: 21.8-22.0) kg/m2. The result of BMI level showed a decreasing trend with age, with a rapid decline before age 100, and then the trend became slower. There are about 30% of the oldest-old classified as undernutrition, but the prevalence of overnutrition is only about 10%. The population distribution characteristics by BMI quintiles showed the oldest-old with lower BMI levels were likely to have the following characteristics: sociodemographically, to be older, female, ethnic minority, unmarried/divorced/widowed, rural residents, illiterate, with inadequate living expenses, located in Central, South, or Southwest China; regarding lifestyles, lower BMI levels were observed for participants who were smoking, not exercising, lack of leisure activities, or with poor dietary diversity; considering functional status, participants with lower BMI levels were those who have poor chewing ability, disability in activities of daily living, cognitive impairment, hearing loss, visual impairment, or poor self-rated health status. The oldest-old with higher BMI levels were likely to have heart disease, hypertension, cerebrovascular disease, and diabetes. Conclusions: The overall BMI level was low among the Chinese oldest-old and it showed a downward trend with age. Currently, the main nutritional problem among the Chinese oldest-old was undernutrition rather than overweight or obesity. Management of healthy lifestyles, functional status, and diseases would be helpful to reduce the risk of undernutrition among the oldest-old.

Prevalence, patterns and prognosis of multimorbidity among middle-aged and elderly inpatients with chronic obstructive pulmonary disease / 中华预防医学杂志

Objective: To explore the characteristics, patterns of multimorbidity and the impact on quality of life and the prognosis of middle-aged and elderly patients with chronic obstructive pulmonary disease (COPD). Methods: This is a cross-sectional study. From January 2012 to December 2021, 939 middle-aged and elderly COPD patients hospitalized in Beijing Hospital were selected by the convenient sampling method. The basic data of patients and the date of 16 common chronic diseases were collected. Patterns of multimorbidity were depicted by cluster analysis. Generalized linear regression model and logistic regression were used to evaluate the multimorbidity patterns and their prognosis. Results: At least one multimorbidity existed among 93.40% of COPD patients, and the median number of multimorbidity was 3. The top five multimorbidity among the patients were hypertension (57.93%, 544/939), coronary heart disease (33.76%,317/939), heart failure (31.95%,300/939), hyperlipidemia (31.63%,297/939) and arrhythmia (27.37%,257/939). Four multimorbidity patterns were identified, cardiometabolic and metabolic multimorbidity, kidney disease multimorbidity, respiratory-digestive-tumor multimorbidity and other multimorbidity. Cardiometabolic and metabolic multimorbidity was most common (590/939, 62.83%). Compared with non-cardiometabolic and metabolic multimorbidity, the incharge ADL score of patients with this multimorbidity decreased by 7 points (95%CI:-11.22- -3.34), Correspondingly, patients with kidney disease multimorbidity decreased by 14 points (95%CI:-24.12- -3.30) on the incharge score. The presence or absence of kidney disease multimorbidity had the greatest impact on discharge score, which was reduced by 12 points in comparison with patients without this multimorbidity (95%CI:-22.43- -2.40). ICU admission is mostly affected by the presence of cardiometabolic and metabolic multimorbidity (OR=2.44, 95%CI: 1.51-3.92) and kidney disease multimorbidity (OR=2.58, 95%CI: 1.01-6.60). The risk of death is the highest for cardiometabolic and metabolic multimorbidity (OR=2.24, 95%CI: 1.19-4.21). Conclusion: Multimorbidity is common in COPD patients. The most common pattern is cardiometabolic and metabolic multimorbidity. Cardiometabolic and metabolic multimorbidity and kidney disease multimorbidity significantly affect the quality of life and often associate with a poor prognosis.

Association of greenness, nitrogen dioxide with the prevalence of hypertension among the elderly over 65 years old in China / 中华预防医学杂志

Objective: To investigate the association of mixed exposure to greenness and nitrogen dioxide(NO2) and hypertension among the older adults aged 65 years and over in China. Methods: The study subjects were from the Chinese Longitudinal Healthy Longevity Survey from 2017 to 2018. A total of 15 423 older adults aged 65 years and over meeting the criteria were finally included in the study. A questionnaire survey was used to collect information on demographic characteristics, lifestyle habits and self-reported prevalence of hypertension. Blood pressure values were obtained through physical examination. The level of normalized difference vegetation index(NDVI) was measured by the Medium-resolution Imaging Spectral Radiator(MODIS) of the National Aeronautics and Space Administration(NASA). The concentration of NO2 was from China's surface air pollutant data set. Meteorological data was from NASA MERRA-2. The exposure to NDVI and NO2 for each study subject was calculated based on the area within a 1 km radius around their residence. The association between mixed exposure of NDVI and NO2 as well as their interaction and hypertension in older adults was analyzed by using the multivariate logistic regression model. The restrictive cubic spline(RCS) function was used to explore the exposure-response relationship between greenness and NO2 and the risk of hypertension in study subjects. Results: The mean age of 15 423 older adults were (85.6±11.6). Women accounted for 56.3%(8 685/15 423) and 55.6%(8 578/15 423) lived in urban areas. The mean time of residence was (60.9±28.5) years. 59.8% of participants were with hypertension. The mean NDVI level was 0.41±0.13, and the mean NO2 concentration was (32.18±10.36) μg/cm3. The results of multivariate logistic regression analysis showed that NDVI was inversely and linearly associated with the hypertension in older adults, with the OR(95%CI) value of 0.959(0.928-0.992). Compared with the T1 group of NDVI, the risk of hypertension was lower in the T3 group, with the OR(95%CI) value of 0.852(0.769-0.944), and the trend test was statistically significant(P<0.05). Compared with the T1 group of NO2, the risk of hypertension was higher in the T2 and T3 groups, with OR(95%CI) values of 1.160(1.055-1.275) and 1.244(1.111-1.393), and the trend test was statistically significant (P<0.05). The result of the RCS showed that NDVI was inversely and linearly associated with hypertension in older adults. NO2 was nonlinearly associated with hypertension in older adults. The interaction analysis showed that NDVI and NO2 had a negative multiplicative interaction on the risk of hypertension, with OR(95%CI) value of 0.995(0.992-0.997). Conclusion: Exposure to greenness and NO2 are associated with hypertension in older adults.

Association between Serum Uric Acid to HDL-Cholesterol Ratio and Nonalcoholic Fatty Liver Disease Risk among Chinese Adults / 生物医学与环境科学（英文）

OBJECTIVE@#The aim of this case-control study was to explore the association between serum uric acid to high density lipoprotein cholesterol ratio (UHR) and the risk of nonalcoholic fatty liver disease (NAFLD) in Chinese adults.@*METHODS@#A total of 636 patients with NAFLD and 754 controls were enrolled from the Affiliated Hospital of Qingdao University, China, between January and December 2016. All patients completed a comprehensive questionnaire survey and underwent abdominal ultrasound examination and a blood test. NAFLD was diagnosed using ultrasonography after other etiologies were excluded. Logistic regression and restricted cubic spline model were conducted to evaluate the relationship of UHR with NAFLD risk.@*RESULTS@#The multivariable adjusted odds ratio (95% confidence interval, CI) for NAFLD in the highest versus lowest quartile of UHR was 3.888 (2.324-6.504). In analyses stratified by sex and age, we observed significant and positive associations between UHR and the risk of NAFLD in each subgroup. In analyses stratified by body mass index (BMI), a significant and positive association was found only in individuals with a BMI of ≥ 24 kg/m2. Our dose-response analysis indicated a linear positive correlation between UHR and the risk of NAFLD.@*CONCLUSION@#UHR is positively associated with the risk of NAFLD and may serve as an innovative and noninvasive marker for identifying individuals at risk of NAFLD.

Association of greenness exposure with waist circumference and central obesity in Chinese adults aged 65 years and over / 中华预防医学杂志

Objective: To examine the association of greenness exposure with waist circumference (WC) and central obesity in older adults in China. Methods: Based on the cross-sectional data from the Chinese Longitudinal Healthy Longevity Survey in 2017-2018, 14 056 participants aged 65 years and over were included. Demographic characteristics, lifestyle, WC, and other information were collected through a questionnaire and physical examination. Based on the satellite monitoring data of moderate-resolution imaging spectroradiometer (MODIS) provided by NASA, the annual mean of normalized difference vegetation index (NDVI) within a radius of 1 000 meters was obtained as the measurement value of greenness exposure. Multivariate linear regression model, multivariate logistic regression model, and restricted cubic splines (RCS) model were used to analyze the association and dose-response relationship between greenness exposure and WC and central obesity in older adults in China. Results: A total of 14 056 participants were enrolled with a median age of 84.0 years [IQR: 75.0-94.0 years]. About 45.0% (6 330) of them were male and 48.6% (5 853) were illiterate. There were 10 964 (78.0%) participants from rural. The mean of WC was (84.4±10.8) cm. Central obesity accounted for 60.2% (8 465), and the NDVI range was (-0.06, 0.78). After adjusting for confounding factors, the multivariate linear regression model showed that the change value of WC in the urban group [β (95%CI):-0.49 (-0.93, -0.06)] was smaller than that in the rural [-0.78 (-0.98, -0.58)] for every 0.1 unit increase in NDVI (Pinteraction=0.022). Compared with the Q1 group in NDVI, WC of Q2 and Q3 groups in rural decreased, and the β (95%CI) values were-1.74 (-2.5, -0.98) and-2.78 (-3.55, -2.00), respectively. The multivariate logistic regression model showed that after adjusting for confounding factors, the risk of central obesity decreased for urban and rural older adults with an increase of 0.1 unit in NDVI, and the OR (95%CI) values were 0.87 (0.80, 0.95) and 0.86 (0.82, 0.89), respectively (Pinteraction=0.284). Compared with the Q1 group in NDVI, the risk of central obesity in the Q2 and Q3 groups in rural was lower, and the OR (95%CI) values were 0.68 (0.58, 0.80) and 0.57 (0.49, 0.68), respectively. The results of the multivariate regression model with RCS showed that there was a non-linear association of NDVI with WC (Pnonlinear=0.006) and central obesity (Pnonlinear=0.025). Conclusion: Greenness exposure is negatively associated with WC and central obesity in older adults in China.

Prevalence of osteoporosis and related factors in postmenopausal women aged 40 and above in China / 中华流行病学杂志

Objective: To understand the prevalence of osteoporosis and related factors in postmenopausal women aged ≥40 years in China and provide scientific evidence for osteoporosis prevention and control. Methods: Data of this study were from the 2018 China Osteoporosis Epidemiological Survey, covering 44 counties (districts) in 11 provinces in China. Related variables were collected by questionnaire survey and physical measurement, and the BMD of lumbar spine and proximal femur was measured by dual-energy X-ray absorption method. The prevalence of osteoporosis and its 95%CI in postmenopausal women aged ≥40 years were estimated with complex sampling weights. Results: A total of 5 728 postmenopausal women aged ≥40 years were included in the analysis and the prevalence of osteoporosis was 32.5% (95%CI: 30.3%-34.7%). The prevalence of osteoporosis in postmenopausal women aged 40-49 years, 50-59 years, 60-69 years, 70-79 years, and ≥80 years were 16.0% (95%CI:4.5%-27.5%), 18.4% (95%CI:15.9%-20.8%), 37.5% (95%CI:34.5%-40.4%), 52.9% (95%CI: 47.5%-58.3%), and 68.0% (95%CI:55.9%-80.1%) respectively. The prevalence of osteoporosis was higher (P<0.001) in those with education level of primary school or below (47.2%, 95%CI: 43.0%-51.3%) and in those with individual annual income less than 10 000 Yuan, (40.3%, 95%CI: 36.9%-43.7%). The prevalence of osteoporosis was 35.1% in rural areas (95%CI: 32.0%-38.1%), which was higher than that in urban areas (P<0.001). The prevalence of osteoporosis in low weight, normal weight, overweight and obese groups were 69.9% (95%CI: 59.0%-80.8%), 42.2% (95%CI: 38.7%-45.7%), 24.2% (95%CI: 21.3%-27.1%) and 14.6% (95%CI: 11.1%-18.0%), respectively. The prevalence of osteoporosis in those with menstrual maintenance years ≤30 years and in those with menopause years ≥11 years were 46.1% (95%CI:40.8%-51.3%) and 48.2% (95%CI:45.0%-51.3%), respectively. Multivariate logistic analysis showed that age ≥60 years, education level of primary school or below, annual household income per capita less than 10 000 Yuan, low body weight, menstrual maintenance years ≤30 years, menopause years ≥11 years were risk factors of osteoporosis in postmenopausal women in China. Conclusions: The prevalence of osteoporosis was high in postmenopausal women aged ≥40 years in China, and there were differences in osteoporosis prevalence among different socioeconomic groups. Effective interventions should be taken for the prevention and control of osteoporosis in key groups in the future.

Regulatory Effect of Huadu Sanyinfang on PI3K/Akt/NF-κB Pathway in Triple-negative Breast Cancer Patients with Qi-deficiency Constitution： An Exploration Based on Differential Expression of miRNA / 中国实验方剂学杂志

Objective:To explore the regulatory effect of Huadu Sanyinfang on phosphatidylinositol 3 kinase（PI3K）/protein kinase B（Akt）/transcription factor nuclear factor-<italic>κ</italic>B （NF-<italic>κ</italic>B） in triple-negative breast cancer （TNBC） patients with qi-deficiency constitution based on the differential expression of miRNA. Method:Based on previous research results， this study conducted the bioinformatics analysis to predict the target genes responsible for regulating the differential expression of miRNA between patients with qi-deficiency constitution and those with moderate constitution， which were intersected with TNBC target genes. The resulting intersection targets were then subjected to Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment analysis and protein-protein interaction （PPI） network analysis to obtain the key pathways and target genes for differentially expressed miRNA in regulating TNBC. TNBC patients with Qi-deficiency constitution were treated with Huadu Sanyinfang for three years after they completed the standard Western medical treatment. The peripheral blood of the patients was sampled before and after medication for detecting gene expression in the key pathways. Result:The comparison between patients with Qi-deficiency constitution and those with moderate constitution revealed 49 differentially expressed miRNAs （16 up-regulated and 33 down-regulated）， which regulated 1 445 TNBC target genes. As demonstrated by PPI and KEGG pathway enrichment analysis， the key genes were mainly tumor protein p53 （TP53）， Akt1， epidermal growth factor receptor （EGFR）， mitogen-activated protein kinase 3 （MAPK3）， vascular endothelial growth factor A （VEGRA）， and tumor necrosis factor （TNF）. The key pathways included PI3K/Akt， MAPK， and RAS signaling pathways. A total of 11 TNBC patients with qi-deficiency constitution were enrolled. Compared with the situations before treatment， the expression levels of p105 subunit of NF-κB （NF-<italic>κ</italic>B1） and Akt1 in the PI3K/Akt signaling pathway were down-regulated after medication， while the levels of catalytic subunit alpha of PI3K （PIK3CA） and B-cell lymphoma-xL （Bcl-xL） were up-regulated. The differences in NF-<italic>κ</italic>B1 and Akt1 expression were statistically significant. Conclusion:Huadu Sanyinfang is able to affect the gene expression of PI3K/Akt/NF-<italic>κ</italic>B signaling pathway in TNBC patients with Qi-deficiency constitution. Specifically， it down-regulates NF-<italic>κ</italic>B1 and Akt1 expression and up-regulates PIK3CA and Bcl-xL.

Preliminary analysis of efficacy and safety of intensity-modulated radiotherapy for stage ⅣA thymoma / 中华放射肿瘤学杂志

Objective To preliminarily evaluate the efficacy and safety of intensity-modulated radiotherapy (IMRT) in the treatment of inoperable stage ⅣA thymoma.Methods A retrospective analysis of 15 patients with inoperable stage ⅣA thymoma receiving IMRT from January 2010 to December 2017 was performed.Among them,9 patients were male and 6 female,aged 31-83 years with a medianof 59 years.The dose of radiotherapy was 50 Gy/60 Gy/70 Gy/ 15-20 fractions for PTV/CTV/GTV.The short-term efficacy,overall survival rate and adverse reactions were analyzed.Results The follow-up rate was 100％.The median follow-up time was 48 months.The short-term partial remission rate was 93％(14/15).The 1-,3-and 5-year overall survival rates were 100％,75％ and 75％,respectively.One patient presented with grade 3 hematological reaction.Four patients died of tumors.Conclusion Preliminary findings demonstrate that IMRT is an efficacious and safe treatment of stage ⅣA thymoma,which can be applied for patients with unresectable thymoma.

Intervention effect of family support services in Changning district of Shanghai on family members of patients with severe mental disorders / 中华疾病控制杂志

Objective To explore the effect of family support service intervention on improving the rehabilitation of patients with severe mental disorders in community and the mental health status and family burden of family members. Methods Using multi-stage random sampling method, 100 patients who met the diagnostic criteria of severe mental disorders were randomly selected from two communities, and then 100 patients who met the diagnostic criteria of severe mental disorders were randomly matched according to gender, age and diagnosis in other communities into the control group. The control group and intervention group were set up strictly according to the inclusion criteria of patients and their families. Results The average age of the 200 groups was (48.27±12.67) years, and the average age of the family members was (63.61±13.19) years. After intervention, the activity dailyliving scale (ADL) scores of the control group were higher than those of the intervention group at all time points (all P0.05). After intervention, the SCL-90(self-reporting inventory) scores of the mental health of the family members in the control group were higher than those in the intervention group at all times (all P<0.05). After intervention, the family burden scale of diseases (FBS) scores of the control group were higher than those of the intervention group at all time points (all P<0.05). Conclusions The intervention measures did improve the rehabilitation effect of severe mental disorder patients in community and the psychological and family burden of family members. A professional family support service team should be established.

Resource Investigation and Conservation of Medicinal Plants in Hasi Mountain Nature Reserve of Gansu Province / 中国实验方剂学杂志

Objective:To explore the wild medicinal plant species and utilization of Hasi mountain nature reserve,in order to provide the references for reasonable utilization and protection of the medicinal plant resources in this area. Method:The survey was conducted based on the technical scheme of the Fourth National Survey on Chinese Material Medica Resources. By consulting literature,collecting medicinal plants specimen and visiting survey area,researchers collected and summarized the wild medicinal plant species, and analyzed the results of reserves. Result:The results showed 7 varieties in 247 kinds of wild medicinal plants in Hasi mountain nature reserve,which belonged to 161 genera in 61 families;by the medicinal parts of all wild medicinal plants,the whole plant of a total of 124 species could be used,accounting for 48.82% of the total species,by traditional Chinese medicine efficacy, antipyretic herbs were the majority,accounting for 32.68% of the total. In addition,there were 8 kinds of rare and endangered wild medicinal plants,such as Ephedra sinica,Gentiana dahurica and Epipactis helleborine. Conclusion:Hasi mountain nature reserve has rich wild medicinal plant resources,and is an important part of medicinal plant resources and protection areas of Jingyuan county and Loess Plateau. However, because they are serious affected by incontinent excavation and insect pest,efforts shall be made in scientific protection and rational development.

Effect of different frequency hyperbaric oxygen preconditioning on ischemia-reperfusion injury of rat flap after transplantation / 中华整形外科杂志

Objective@#To explore the effect of hyperbaric oxygen preconditioning with different frequency on the survival rate of flap and ischemia-reperfusion injury in rats after transplantation, and to explore the best preconditioning conditions to improve the survival rate of rat flaps after transplantation.@*Methods@#Thirty-six Sprague Dawley rats were randomly divided into four groups according to the random number table method, 9 groups in each group.Four groups of rats were pretreated with hyperbaric oxygen pretreatment for 0, 2, 4, and 6 days before the operation, control group, pretreatment 2 d group, pretreatment 4 d group, and pretreatment 6 d group. Taking the midline of the back of the rat as the axis, an ultra-long random flap with a pedicle at the tail end and about 1 cm from the superior iliac spine was designed and cut to a size of 10.0 cm×2.5 cm. The survival of the flaps in each group was observed and the final survival area and survival rate of the flaps were measured on the 7th day after surgery. On the 7th day after operation, the tissue was taken at a distance of 5 cm from the pedicle, and the histopathology was observed; The content of superoxide dismutase (SOD) and malondialdehyde (MDA) in flap tissue was detected by immunohistochemistry, and the expression rate of positive cells in each group was calculated. Immunofluorescence was used to detect the expression of interleukin-6 (IL-6) in the flap tissue.@*Results@#On the 7th day after the operation, the survival area and survival rate of the transplanted flaps in the hyperbaric oxygen pretreatment group were significantly higher than those in the control group (P<0.05), and the pretreatment 4 d and 6 d groups were significantly higher than the pretreated 2 d group (P<0.05), but there was no significant difference between the pretreated 4 d group and the 6 d group (P=0.095). Pathological observation on the 7th day after operation showed that there was some necrosis in the control group, the vascular cells in the pretreated 2 d group had more vascular structures, and more neovascularization was observed in the pretreated 4 d group. The inflammatory cells were the least in the 6 d pretreatment group, and the neovascularization was the same as the pretreatment 4 d group. The absorbance A value of SOD in the control group was 0.009 7±0.000 3, and the positive expression rate was 20%, which was significantly lower than that in the hyperbaric oxygen pretreatment group. The difference was statistically significant (P<0.05). However, the absorbance A value of MDA in the control group was 0.055 1±0.003 0, and the positive expression rate was 55%, which was significantly higher than that in the hyperbaric oxygen pretreatment group. The difference was statistically significant (P<0.05). Among them, the SOD absorbance A value of the pretreated 2 d group was 0.023 8±0.003 0, and the positive expression rate was 30%, which was lower than the pretreatment 4 d group (absorbance A value 0.046 9±0.003 0, positive expression rate 35%) and 6 d group (absorbance A value 0.047 2±0.003 6, positive expression rate 40%), The MDA absorbance A value of the pretreated 2 d group was 0.037 2±0.003 2, and the positive expression rate was 30%, which was higher than the pretreatment 4 d group (absorbance A value 0.014 7±0.002 4, positive expression rate 5%) and 6 d group (absorbance A value 0.017 0±0.001 8, positive expression rate 10%), the difference was statistically significant (P<0.05). However, there was no significant difference in the expression of SOD and MDA between the pretreated 4 d group and the pretreated 6 d group (P>0.05). The expression of IL-6 in the hyperbaric oxygen pretreatment group was significantly lower than that in the control group (absorbance A value 44.937 0±0.594 0), the difference was statistically significant (P<0.05). The absorbance A value in the pretreated 2 d group was 41.698 0±0.724 0, which was significantly higher than the pretreatment 4 d group (absorbance A value 34.049 0±0.323 0) and 6 d group (absorbance A value 33.524 0±0.639 0). The difference was statistically significant (P<0.05). There was no significant difference in the expression of the pretreated 4 d group compared with the 6 d group (P=0.068).@*Conclusions@#Hyperbaric oxygen preconditioning can significantly promote the survival of rat flaps after transplantation. Preoperative hyperbaric oxygen preconditioning once daily for 4 consecutive days, can enhance the tolerance of flap tissue to ischemia and anoxia and reduce tissue ischemia-reperfusion injury.

Study on the Effects of 8-O-acetyl-shanzhiside Methylester on the Expression of HDAC 1-5 in the Spinal Dorsal Horn of Rats with Chronic Inflammatory Pain and Its Relationship with JAK 2-STAT3 Signaling Pathway / 中国药房

OBJECTIVE： To study the effects of 8-O-acetyl-shanzhiside methylester （8-OaS） on the expression of histone deacetylase 1-5 （HDAC1-5） in the spinal dorsal horn of chronic inflammatory pain model rats， and its relationship with Janus-activated kinase 2-signal transductions and activators of transcription 3 （JAK2-STAT3） signaling pathway. METHODS： SD rats were randomly divided into normal control group， sham operation group （normal saline）， complete Freund’s adjuvant （CFA） group （normal saline）， 8-OaS low-dose， medium-dose and high-dose groups （2， 20， 200 μg/kg）， with 6 rats in each group. Except for normal control group and sham operation group， chronic inflammatory pain model was induced by subcutaneous injection of CFA into the left hind toe of rats in other groups； after modeling， those groups were given relevant medicine intraperitoneally， once a day， for consecutive 7 d. Thermal radiation method was used to detect the latency of paw withdraw in rats on the 1st， 2nd， 3rd， 4th， 5th， 6th， 7th， 8th， 11th and 15th day of administration. Rats were grouped and given medicine according to the above method of the latter 5 groups. The protein expression of HDAC 1-5， phosphorylated JAK2 （pJAK2） and phosphorylated STAT3 （pSTAT3） in the spinal dorsal horn of lumbar enlargement segment in rats were detected by Western blot method after last medication. Rats were randomly divided into sham operation group （normal saline）， CFA group （normal saline）， 8-OaS group （20 μg/kg） and JAK2-STAT3 inhibtor AG490 group （8 mg/kg）， with 6 rats in each group； IP model was established by same method as above and then were given relevant medicine intraperitoneally， once a day， for consecutive 7 d. The expression of HDAC5 and glial fibrillary acidic protein （GFAP） in spinal dorsal horn of rats were detected by immunofluorescence histochemical staining. RESULTS： Compared with normal control group and sham operation group， the latency of paw withdraw was shortened significantly in other groups （P＜0.05）. Compared with CFA group， the latency of paw withdraw was prolonged significantly in 8-OaS low-dose， medium-dose and high-dose groups （P＜0.05）， in dose-dependent manner. Compared with sham operation group， the protein expression of HDAC 1-5， pJAK2 and pSTAT3 in spinal dorsal horn of rats were increased significantly in CFA group （P＜0.05）. Compared with CFA group， the protein expression of HDAC5， pJAK2 and pSTAT3 in spinal dorsal horn of rats were decreased significantly in 8-OaS low-dose， medium-dose and high-dose groups （P＜0.05）， but there was no statistical significance in the protein expression of HDAC 1-4 （P＞0.05）. HDAC5 was expressed on astrocytes in the spinal dorsal horn； compared with sham operation group， the expression of GFAP and HDAC 5 were increased significantly in spinal dorsal horn of rats in CFA group （P＜0.05）. Compared with CFA group， the expression of GFAP and HDAC5 in spinal dorsal horn of rats were decreased significantly in 8-OaS group and AG490 group （P＜0.05）. CONCLUSIONS： 8-OaS can effectively relieve CFA-induced chronic inflammatory pain， the mechanism of which may be associated with the down-regulation of HDAC5 expression and the phosphorylation levels of JAK2 and STAT3.

Optimization of the extraction process of main effective components in Lycii Fructus by central composite design-response surface method / 国际药学研究杂志

Objective: To optimize the extraction process of effective components in Lycii Fructus using central composite design(CCD)-response surface method(RSM). Methods: The yield of main effective components, polysaccharides, flavonoids, rutin and chlorogenic acid as well as the yield of total extract were used as indicator for evaluating the effect of extraction solvent, extraction time, solid- liquid ratio, extraction temperature and other factors. The single factor experiment was conducted to determine the range of various factor parameters, the factor design experiment was performed for the screening of the factors that had significant influence on the extraction efficiency of effective components, the maximum velocity rise experiment was carried out to determine the central value of the factors, and finally the optimal extraction process was optimized by the central composite design- response surface methodology. Results: The optimum extraction conditions of Lycii Fructus were obtained as follows: the extraction with 60% aqueous ethanol solution by ultrasound sonication at room temperature for 40.5 minutes, and the solid- liquid ratio was 1:27. Conclusion: The present optimal extraction process could effectively improve the extraction efficacy of effective components from Lycii Fructus, and the created CCD-RSM model and related conditions have good predictability and repeatability, which provides experimental and theoretical reference for further development and research of Lycii Fructus.

Effects of Drought Stress on Physiological Characteristics of Codonopsis Radix / 中国中医药信息杂志

Objective To study the physiological characteristics of Codonopsis Radix under drought stress; To reveal the physiological mechanism of Codonopsis Radix in response to drought stress. Methods Method of pot experiment was used to set up 4 water treatments: normal water supply, mild stress, moderate stress and severe stress. Through the determination of leaf relative water content, cell membrane permeability, osmotic adjustment contents and protective enzyme activity, the effects of drought stress on physiological characteristics of Codonopsis Radix were studied. Results With the drought stress increased, the chlorophyll a, total chlorophyll content and leaf relative water content of Codonopsis Radix decreased, but chlorophyll b had no obvious change; The conductivity increased first and then decreased; MDA contents increased first and then decreased and then increased; There was no significant change in the rate of superoxide anion production; POD and CAT activity increased; SOD had no significant change; The proline content increased first and then decreased; soluble sugar decreased; soluble protein had no significant change. Conclusion Under the condition of drought stress, by increasing the content of proline to regulate cell osmotic potential, Codonopsis Radixcan increase the antioxidant enzyme activity to reduce membrane lipid peroxidation damage to cells.

Expression and clinical significance of long non-coding RNA LINC00520 in laryngeal squamous cell carcinoma / 临床耳鼻咽喉头颈外科杂志

To investigate the expression of LINC00520 in laryngeal squamous cell carcinoma(LSCC),and analyze its relevance and roles in carcinogenesis and development of LSCC.The expression of LINC00520 in laryngeal squamous cell carcinoma tissue and paired adjacent normal tissue was determined by real-time PCR.The relationship between the expression of LINC00520 and the clinicopathological characteristics including clinical stage,pathological type,histological grade and lymph node metastasis of LSCC was analyzed.(1)The LINC00520 expression level was significantly upregulated in LSCC tissues compared to that of paired adjacent normal tissues(0.05).The LINC00520 expression level had no significant changes in poorly differentiated LSCC compared with that of well and moderately differentiated counterparts(>0.05).Moreover,the expression of LINC00520 had no significant difference between T1+T2 stage and T3+T4 stage LSCC tissues(>0.05).Interestingly,the LINC00520 level in LSCC with lymph node metastasis was significantly higher than that in patients without lymph node metastasis(<0.01).Upregulation of LINC00520 in LSCC may contribute to its metastasis.

Application of VL in combination with flipped classroom in teaching of virus infection diagnosis / 中华医学教育探索杂志

Objective To explore the effect of virtual laboratory (VL) + flipped classroom in teaching of virus infection diagnosis.Methods 40 students of Class One from clinical medical undergraduates of Grade 2014 were randomly taken as the experimental group,with 40 students of Class Two as the control group.The experiment group adopted flipped classroom teaching by virtual lab platform and classroom activities,while the control group adopted traditional classroom teaching such as watching video and lecturing.Finally post-test scores were compared by the independent samples t-test of SPSS 18.0 statistical software between the two groups.The teaching effects were evaluated through questionnaires survey in experimental group.Results The scores (82.73 ± 2.62) of comprehensive assessments were superior to the control scores (57.94 ± 4.65).Difference between the two groups was statistically significant (t=29.380,P=0.000).Students' satisfaction concerning the teaching methods and effects of the flipped classroom in experimental group was up to 85％.Conclusion Flipped classroom based on internet virtual lab platform in teaching of virus infection diagnosis can enhance the teaching quality and improve students' learning enthusiasm and thinking ability.

The preliminary exploration of evolution of nonspecific manifestations of pulmonary function in elderly people / 中华老年医学杂志

Objective To investigate the evolution of nonspecific manifestations of pulmonary function in elderly people.Methods Retrospective analysis of the data of nonspecific pulmonary function(NSPF) on the initial PF testing in elderly people from the same PFT apparatus in Beijing Hospital were collected from January 2004 to December 2012.All the patients with complete clinical data and reexamination at least one time were enrolled into this analysis.NSPF was defined as normal FEV1/FVC and TLC combined with a decreased FEV1 or FVC or both.All the patients with complete clinical data were divided into blocking group,restricted group,NFSP group and normal group according to their PF.The comparison was performed among these groups.Kaplan-Meier was used for analysis of the turnover and outcome of elderly NSPF patients,log-rank test was used for comparing the difference of turnover and outcome and COX regression was used for analyzing single and multiple factors of different turnover and outcome.Results Overall 59 patients were diagnosed as NSPF,with male:female ratio of 52:7,the average age of(71.8 ± 8.8)years and at a median follow-up of 4 years.The statistically significant differences in age,sex,body mass index(BMI),smoking status,both the clinical manifestations and chest CT performance at first visit and during the following-up were not found among the groups(all P ＞0.05).The pulmonary functions of NSPF patients were transformed into an obstructive pattern(19.6 ％),into a restrictive pattern(7.6 ％)and into a normal pattern(8.8 ％) in 4 years cumulative incidence rate,with statistically significant in differences(x2 =7.411,P =0.024).An invariant pulmonary function in NSPF patients accounted for 64.0％ in the most,and the second was obstructive ventilation function disability.Monomial and multinomial Cox regression analysis showed that emphysema and bulla in the initial CT scan was the predictor of the change to the obstructive pattern from NSPF during follow-up(HR=4.325,P=0.045),age was the predictor of the change to the restrictive pattern(HR=1.143,P=0.020).And pleural thickening and disappearing of pleural effusion were the predictor of change to the normal pattern (HR =8.889,P =0.018) respectively.Conclusions Most NSPF in elderly people could exist consistently.Obstructive pattern is the maximal likelihood of NSPF changing to the other pattern.Emphysema and bulla in the initial CT scan is the predictor of the obstructive pattern.The change is related with emphysema and bulla in the initial CT scan.

Production regionalization study of Isatidis Radix / 中国中药杂志

In this research, we collected information of eighty nine sampling points of Isatidis Radix nationwide through data query and field survey, and the medicinal component contents of samples were determined by HPLC. By using Maxent Model and ArcGIS, along with ecological factor data, the national habitat suitability distribution of Isatidis Radix was predicted. R-language was adopted to establish a model of the relationship between the medicinal component contents and ecological factors. The medicinal quality was divided by ArcGIS grid computing. The results indicated that the three main ecological factors affecting the distribution of Isatidis Radix were precipitation in the driest season, mean annual temperature and mean temperature in the wet season. The suitable cultivation region of Isatidis Radix is mainly distributed in the north of China, but the medicinal quality is quite different, Isatidis Radix in Xinjiang province has higher medicinal quality. This study provides a reference for rational selection of planting areas of Isatidis Radix.

Survey and protective utilization of Lycium ruthenicum resources distributed in middle and lower reaches of Heihe river / 中国中药杂志

This study was aimed to investigate the qualitative and quantitative distributions of Lycium ruthenicum resources in the middle and lower reaches of Heihe River, for providing scientific evidence for the protective utilization of the resources in the corresponding geographic region. The outdoor sample plot and quadrat survey, literature search, sample collection, in-house identification and classification were performed by route surveying and visiting to the local natives and/or herb farmers based on the current distribution data of the L. ruthenicum resources in the middle and lower reaches of Heihe River. The distributive pattern of the resources was analyzed using ArcGIS program. The data regarding the category/distributed area and the genetic resources of the L. ruthenicum were collected. The data collected in this study may provide the scientific evidence for the protective utilization of the L. ruthenicum resources in the corresponding geographic region, allowing for the avoidance of the ecological environment from being damaged by improper utilization.

Analysis of commercial grades of Schisandrae Sphenantherae Fructus based on schisantherin / 中国中药杂志

Schisandrae Sphenantherae Fructus, from different producing areas, were collected and divided into three grades. The moisture content and total ash were determined on the basis of the pharmacopoeia method, and schisantherin was determined by UPLC. The study is aimed to find the commercial specifications and grades of Schisandrae Sphenantherae Fructus based on schisantherin content. The results showed that the content of water, total ash and schisantherin of Schisandrae Sphenantherae Fructus from different producing areas qualified. There was no significant difference between different grades of schisandrin content, but the second-class were the highest, first-class and third-class were lower. It means that schisandrin content is not positive correlation to commercial grade. The study will be helpful to the production, management and clinical practice of Schisandrae Sphenantherae Fructus.