The biological characters of Sindbis virus strain of Yunnan(YN87448 strain) were studied by the test of the filtration, acid-resistant, ether-resistant, CPE, susceptibility of animal, HA, plague, determination of virus titres, and the cross-HI, cross-IFAT and PRNT as well.The results indicated that YN87448 strain belongs to Sindbis virus, Alphavirus, Togaviridae. YN87448 strain virus was plaque purified(PYN87448). The biological character of PYN87448 strain virus was studied too. PYN87448 strain virus will be used in the molecule biological test.

OBJECTIVEThis study was to identify the post-traumatic stress disorder (PTSD) changes and the relative risk factors within one year after Wenchuan earthquake among middle school students in the disaster area.

METHODSA total of 1966 students from 3 schools in Wenchuan earthquake region were selected as the target population. For each student, personal basic information and standard psychological scale (PCL-C, PSSS) were investigated by a self-administrated questionnaire in the 3rd, the 6th, the 9th and the 12th month after the earthquake, respectively. PTSD trends over the time and the associated risk factors were analyzed through the establishment of multi-level random coefficient model.

RESULTSThere were 1677 middle school students fully participated in the PTSD follow-up study by turning in the valid questionnaires. The averaged scores of PTSD at the time of the 3rd, the 6th, the 9th and the 12th month after the earthquake were 35.14 ± 11.08, 32.90 ± 11.03, 30.67 ± 11.28 and 29.75 ± 11.22, respectively. Meanwhile, the general incidences of PTSD were 36.6% (613/1677), 30.7% (515/1677), 24.8% (416/1677)and 22.2% (373/1677), respectively. The median score of perceived social support system was 60.00 and the general incidences of PSS was 17.20% (289/1677). The PTSD scores for the students had a decreasing trend during the period of our observation (β(time) = -1.879, χ(2) = 47.03, P < 0.05). The averaged scores for boys for the 4 follow-up studies were 33.71, 31.61, 29.66, 28.83; for girls were 36.33, 33.98, 31.51, 30.52; for junior school students were 35.46, 33.28, 30.18, 29.22; for senior school students were 34.89, 32.62, 31.04, 30.15. Moreover, two factors, gender and grade, were related with the decreasing trend (the trend for girls and senior school students was sharper than that for boys and junior school students) (β(gender-time) = -0.354, χ(2) = 4.83, P < 0.05; β(grade-time) = 0.622, χ(2) = 11.30, P < 0.05).

CONCLUSIONSThe prevalence of PTSD was high. Meanwhile, there was a trend of self-recovery for adolescent's PTSD during the first year of post-earthquake, but boys and junior school students recovered more slowly.

Adolescent ; Child ; China ; epidemiology ; Disasters ; Earthquakes ; Female ; Follow-Up Studies ; Humans ; Incidence ; Life Change Events ; Male ; Stress Disorders, Post-Traumatic ; epidemiology ; psychology ; Students ; psychology ; Surveys and Questionnaires ; Young Adult

OBJECTIVETo explore a suitable model regarding community-based case management of hypertension in the urban areas.

METHODSBased on the guidelines set by the Chinese Hypertension League (CHL), the goal of case management of hypertension was set as: to maintain blood pressure at the normal range. Family doctors were guided to take care of case management. Hypertension patients who had been contracted to the family doctors were followed by a team of family doctors for half a year.

RESULTSAfter the 6-month intervention, the rate of hypertension under control had increased from 50.44% to 69.84% (P < 0.0001) while the means of systolic blood pressure decreased by 3.72 mm Hg and diastolic blood pressure decreased by 2.67 mm Hg (P < 0.0001) respectively. The means of SBP decreased by 8.59 mm Hg and diastolic blood pressure decreased by 5.26 mm Hg in patients whose baseline blood pressure were not under control. The rates of smoking, higher salt intake and no physical exercise had significantly decreased (P < 0.05). The mean number of hospital visits in the six-month follow-up period was 7.69 +/- 2.37. The "rate of control" among those who had followed schedule was higher than that of those who were not on schedule (P < 0.0001). The rate among those who had followed the schedule tended to have increased with aging and the level of education (P < 0.001).

CONCLUSIONThe community-based case management program on hypertension played an important and effective role in the control of hypertension in urban areas. Patients received great benefit when following the guidance from their doctors.

Aged ; Case Management ; organization & administration ; China ; epidemiology ; Community Health Services ; organization & administration ; Evaluation Studies as Topic ; Female ; Humans ; Hypertension ; epidemiology ; Male ; Middle Aged ; Urban Health

Aim To investigate the effect of dietary intake of o)-3 poly unsaturated fatty acids ( u>-3 PUFAs) on the immune function of chronic graft versus host disease (cGVH) lupus model mice.Methods A single intraperitoneal injection of bml2 mice lymphocytes was used to establish a cGVH mouse model.On the day of modeling, 90% cd-3 PUFAs and 97% EPA were given by gavage for 14 days.The immune indexes of mice were evaluated by flow cytometry, and the serum total J J J ∗ IgG levels were measured by ELISA.Results Compared with control group, cGVH group significantly down-regulated Treg subsets, and up-regulated the Tfh , GC B and plasma subsets in the lupus mice.Comparer] with model control group, u>-3 PUFAs could significantly elevate Treg subsets, and decrease TFH, (X] B, and plasma subsets; serum total IgG levels in the 97% EPA group were significantly reduced.Conclusion In the cGVH lupus mouse model, co-3 PUFAs can suppress some immune functions by increasing Treg cells, reducing TFH, GC B, plasma cells and inhibiting the secretion of IgG.Such immunomodulatory effect provides new sights into the development of a potentially novel treatment modality for cGVH.

Objective:To observe the clinical efficacy of modified Qiaohetang and Xiehuangsan in the treatment of acne due to dampness-heat accumulation and its influence on the levels of inflammatory factors and sex hormones. Method:One hundred and sixty-eight eligible patients were divided into an observation group （84 cases） and a control group （84 cases） according to the random number table. Adapalene gel was applied externally in both groups， one time per day. In the control group， Jinhua Xiaocuo pills was taken orally， 4 g per time， three times a day. In the observation group， the modified Qiaohetang and Xiehuangsan was provided for oral administration， one bag per day. The treatment lasted for eight weeks. The Global Acne Grading System （GAGS） score， skin lesion count， dampness-heat accumulation syndrome score， and Dermatology Life Quality Index （DLQI） score were recorded before and after treatment， followed by the detection of interleukin-8 （IL-8）， IL-10， IL-17， interferon-γ （IFN-γ）， free testosterone （FT）， estradiol （E₂） and sex hormone binding globulin （SHBG） before and after treatment as well as the safety evaluation. Result:The GAGS， dampness-heat accumulation syndrome， and DLQI scores of the observation group were lower than those of the control group （P<0.01）. The counts of inflammatory skin lesions （papule and pustule）， non-inflammatory skin lesions， and total skin lesions in the observation group declined in contrast to those in the control group （P<0.01）. The IL-8， IL-17， IFN-γ and FT levels of the observation group were decreased as compared with those of the control group （P<0.05， P<0.01）， while the IL-10， E₂， and SHBG levels were increased （P<0.01）. The overall response rate in clinical symptom alleviation of the observation group was 93.67%（74/79）， which was higher than 81.82%（63/77） of the control group （χ²=5.121， P<0.05）. The overall response rate in dampness-heat accumulation syndrome relief of the observation group was 92.41% （73/79）， still higher than 79.22% （61/77） of the control group （χ²=5.595， P<0.05）. No adverse reactions occurred after the oral administration of Chinese medicinal preparations. Conclusion:The modified Qiaohetang and Xiehuangsan combined with adapalene gel can reduce the skin lesion count and severity， relieve both clinical symptoms and dampness-heat accumulation syndrome， regulate the inflammatory response and sex hormones， and improve the quality of life of patients with acne of dampness-heat accumulation syndrome without inducing side effects.

OBJECTIVE: To analyze the rules of acupoint and medication selection of acupoint application therapy for functional constipation (FC) by data mining technology. METHODS: The clinical research literature regarding acupoint application therapy for FC from published to February 26, 2020 was searched in CNKI, VIP, Wanfang, SinoMed and PubMed. The prescriptions were extracted, and by using SPSS24.0 and SPSS Modeler14.0 software, the use of high-frequency acupoints and medication was summarized. The association rule analysis, cluster analysis and core prescription analysis of acupoints and medication were analyzed. RESULTS: A total of 122 prescriptions of acupoint application therapy were included, involving 32 acupoints. The core prescription of acupoints was Tianshu (ST 25), Dachangshu (BL 25), Shenque (CV 8) and Guanyuan (CV 4). The high-frequency meridians mainly included conception vessel, CONCLUSION The use of local acupoint and regulating-
Acupuncture Points ; Acupuncture Therapy ; Constipation/drug therapy* ; Data Mining ; Humans ; Meridians

In this study, untargeted metabolomics technology based on ultra-high-performance liquid chromatography-quadrupole/time of flight mass spectrometry (UPLC-Q-TOF-MS/MS) was used to analyze and identify the overall chemical components of Juniperri Caulis et Folium. Chemical markers for the identification of different Juniperri Caulis et Folium species were screened by integrated principal component analysis and partial least squares discriminant analysis. A total of 58 chemical components were detected and 46 of them were identified, including 26 flavonoids, 8 organic acids and their derivatives, 4 phenylpropanoids, 3 terpenoids, and 5 other components. Among them, methylsyringin and ekersenin were identified for the first time. In the positive ion mode, 12 markers were screened, and in the negative ion mode, 13 markers were screened for species identification. In summary, UPLC-Q-TOF-MS/MS metabonomics technology combined with chemometrics method can effectively reveal the chemical composition differences of different Juniperri Caulis et Folium species, and provide reference for its species identification and quality control.

Objective To investigate the effect of Angelica Sinensis polysaccharide (ASP) on proliferation, differentiation and transplantation of human leukemia stem cells (LSCs) . Methods 1. Effect of angelica sinensis polysaccharides on proliferation of CD34

Objective:To study the clinical medication regulation for the prevention and treatment of new coronavirus pneumonia with traditional Chinese medicine（TCM），especially prescriptions，on the basis of "treatment in accordance with seasonal conditions". Method:The guidelines and suggestions on novel coronavirus pneumonia formulated and published by national，provincial and municipal governments and experts before February 17，2020, were retrieved and summarized. Data was recorded in stages according to "prevention period，clinical observation period，pre-clinical period，middle clinical period，late clinical period and recovery period". The frequency analysis of TCM and its efficacy，prescription and proprietary Chinese medicine was carried out，and then the factor analysis and cluster analysis of TCM were carried out to obtain rational drug combinations. Result:Totally 172 suggestions on combined structure of drugs，50 suggestions on prescriptions and 31 suggestions on proprietary Chinese medicine were involved in the study，and provided by 24 official agencies and 24 medical experts， 147 kinds of herbs，44 prescriptions and 16 proprietary Chinese medicines were collected. No matter for the drug category or for the specific drug selection，the law of drug use in different stages was not the same. Huoxiang Zhengqi capsule，Shufeng Jiedu capsule，Lianhua Qingwen capsule and Jinhua Qinggan capsule can be used in the observation period. Xuanbai Chengqitang can be used in the middle of the disease. Angong Niuhuangwan，Suhexiangwan or Zixuedan, and Angong Niuhuangwan can be selected in the middle of the disease. And Qingfei Paidu decoction can be used in all stages of the disease. Conclusion:Doctors need to adjust their prescriptions along with the progress of the disease，because the law of medication in each stage of the new coronavirus pneumonia is different.