Objective: To examine the relations among objective peer support, perceived peer support, perceived parent support, importance ratings of peer / parent support, and self- worth in adolescents. At the same time, peer acceptance of adolescents was examined. Methods: Sociometric techniques and self- report instrument were applied collectively to a sample of 285 adolescents. Results: ①Sociometric techniques show that adolescents can be divided into popular adoles- cents, rejected adolescents, controversial adolescents, and neglected adolescents; ②There are significant positive correla- tions between objective peer support and perceived peer support, between perceived peer / parent support and self- worth, but there is no significant correlation between objective peer support and self- worth; ③Importance ratings of peer / parent support can serve as a moderator between perceived peer / parent support and self- worth for the middle school students aged 15. Conclusion: Perceived peer / parent support can predict self- worth of adolescents; Importance ratings of peer / parent support can moderate perceived peer / parent support and self- worth for the middle school students aged 15.

Objective:To study the preparation and quality control of loxoprofen sodium patches and develop an HPLC method for the determination of loxoprofen sodium. Methods:Loxoprofen sodium patches were prepared with CMC-Na and PVP as the adjuvants, and an HPLC method was used to determine the content of loxoprofen sodium. Results:The linear range of loxoprofen sodium was 4-24μg·ml-1(r=0. 999 7), the average recovery was 99. 99%(RSD=0. 99%, n=6). Conclusion:The preparation method is reason-able, simple and stable. The developed HPLC method is specific to determine the content of loxoprofen.

Objective To investigate the therapeutic effects and adverse drug reactions of different doses of rosuvastatin in patients with acute ST segment elevation myocardial infarction (STEMI). Methods A total of 115 patients with STEMI were collected from Department of Cardiology, the Second Hospital of Tianjin Medical University. According to different oral doses of rosuvastatin, patients were divided into two groups including 5 mg/d rosuvastatin treatment group (low-dose group, n=44) and 10 mg/d Rosuvastatin treatment group (moderate-dose group, n=71). Patients of two groups were treated with Rosuvastatin at least 1 month after discharge. Data of total cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were analyzed and compared before and after treatment between two groups. The major cardiovascular adverse events (MACE) and adverse reactions were recorded in two groups of patients. Results There were no significant differences in blood lipid and liver function levels before and after one month treatment between the two groups. After one month treatment, levels of TC, LDL-C, ALT and AST were significantly decreased in both groups of patients compared with those before treatment (P<0.05). There were no significant differences in levels of TG, and HDL-C before and after treatment between two groups. The incidence of MACE (heart failure and angina pectoris) was significantly lower in moderate-dose group than that in low-dose group (P<0.05). There was no significant difference in the proportion of malignant arrhythmia between the moderate-dose group and the low-dose group (P<0.05). No target vessel repair and death were found in the two groups. No obvious adverse drug reactions were found during the follow-up period. Conclusion The hypolipidemic effects are epuivalent between 5 mg/d rosuvastatin and 10 mg/d on the basis of conventional treatment for STEMI patients, but the moderate dose can reduce the incidence of MACE and improve prognosis.

Objective:To determine the content of self-manufactured and imported lurasidone hydrochloride tablets in order to e-valuate their internal qualities. Methods:The determination of lurasidone hydrochloride tablets was performed by HPLC. The HPLC system consisted of a Waters C8 column (250 mm × 4. 6 mm, 3. 5 μm) and the mobile phase of 0. 05 mol·L-1 phosphate buffer solu-tion (pH 3. 0)-acetonitrile(60∶40), the detection wavelength was 230 nm, the flow rate was 1. 2 ml·min-1 and the column tempera-ture was 40℃, and the injection volume was 20μl. Results:The linear range of lurasidone hydrochloride was 0. 100 8-0. 806 4 mg· ml-1(r=0. 999 5). The average recovery was 99. 95% with RSD of 0. 31%(n=9). Conclusion:The method is simple, rapid, ac-curate, and reliable. The method can determine lurasidone hydrochloride tablets satisfactorily. According to the results, there are few differences among the self-manufactured and imported lurasidone hydrochloride tablets.

Objective To explore the abnormally functional brain regions of female patients with depression by resting state functional magnetic resonance imaging (fMRI),and analyze the correlation with the severity of depressive symptoms.Methods 32 female patients diagnosed with depressive disorder and 40 matched healthy controls completed resting state fMRI scans.The whole brain's regional homogeneity (ReHo) and amplitude of low-frequency fluctuation(ALFF) were calculated,and the correlation analysis be tween ReHo and ALFF of brain regions with significant difference and the severity of depressive symptoms was conducted.Results Compared with control group,the left precuneus/left cuneus (MNI:-18,-81,45),bilateral precentral gyrus (MNI:-58,-5,35 and 57,-6,33),left inferior parietal lobule (MNI:-42,-36,45) and right inferior temporal gyrus(MN1:60,-45,-18) (P＜0.05,corrected by AlphaSim)in the case group showed significantly decreased ReHo,with statistical significance.Compared with control group,the left cuneus(MNI:-3,-87,30),right inferior temporal gyrus(MNI:60,-48,-18) and left precentral gyrus(MNI:-63,-3,26) (P＜0.05,corrected by AlphasSim)in the case group showed significantly decreased ALFF.The ReHo in the right inferior temporal gyrus was negative correlated with the HAMD-17 total score and retarda tion factor(r=-0.484,P=0.017;r=-0.408,P=0.048),the ALFF in the right inferior temporal gyrus was positively correlated with weight factor(r=0.574,P=0.003),and negative correlated with the number of depressive episodes(r=-0.416,P=0.043).Conclusion Female with depression in resting state have several abnormally functional brain regions and the extent of damage is correlated with the severity of depressive symptoms.Combination of the two parameters may yield a more comprehensive pathophy-siological mechanism for depressive disorder.

Objectives To explore the prognostic factors of patients with pancreatic ductal adenocarcinoma and synchronous liver metastases ( PALM ) receiving palliative treatment .Methods The clinical characteristics , therapeutic approaches and survival outcomes of 108 consecutive patients with PALM who were pathologically diagnosed and received only palliative treatment at Tianjin Medical University Cancer Hospital from January 2001 to December 2015 .were retrospectively analyzed .Survival rates were calculated by Kaplan-Meier method, and factors influencing the survival were analyzed by univariate and multivariate Cox proportional hazard regression model .Results Of these patients, 68 were male and 40 were female, with an average age of 58 years old.Seventy-seven (71.3%) cases or their relatives refused to receive anticancer therapies.Palliative treatments included choledochojejunostomy and /or gastrojejunostomy after exploratory laparotomy for 5 (4.6%) cases, percutaneous transhepatic biliary drainage (n=22, 19.4%), drug analgesia (n=79, 73.1%), drug analgesia combined with percutaneous neurolytic coeliac plexus block (n=17, 15.7%).The median survival time (MS)was 94 days in all patients.Karnofsky performance score (KPS)<80, lymph node metastases, ascites, fasting blood glucose ≥6.1 mmol/L and lactate dehydrogenase ( LDH ) ≥250 U/L were independent risk factors influencing prognosis of PALM . Three groups were categorized according to the number of the above 5 risk factors for 0~1 in low risk group, 2~3 in middle risk group and 4~5 in high risk group, and the MS of 3 groups was 137, 95 and 48 days, respectively, with an extremely statistical significance (P<0.0001).Conclusions KPS, lymph node metastases, ascites, fasting blood glucose and LDH were the risk factors for prognosis of PALM .Patient stratification according to the above factors is more advantageous for judging individualized prognosis and can provide reference for making clinical decision .

Objective:To provide a potential platform for transferring specific antigen against fish bacterial diseases based on attenuated Lm (EGDe-ΔactA/ΔinlB).Methods: Attenuated Lm (EGDe-ΔactA/ΔinlB) was used to express outer membrane protein K (Ompk),a conserved and effective vaccine candidate in vibrio.The identification of recombinant strains and detection of antigen genes were operated with PCR and RT-PCR,respectively.Results: The results of PCR showed that Lm-Ompk (L-O),Lm-Lmo0576-Ompk (L-L-O) and Lm-P-Ompk (L-P-O) were constructed successfully.The identity of foreign gene was 100％ compared with sequence of NCBI.The analysis of transcription showed that the expressions of Ompk in L-O,L-L-O and L-P-O were significant (P<0.001).Moreover,the expression of Ompk in the condition of antibiotic was higher than that in the BHI without antibiotic (P<0.05).Conclusion: Lm-Ompk (L-O),Lm-Lmo0576-Ompk (L-L-O) and Lm-P-Ompk (L-P-O) were constructed successfully.

Objective To compare the effects of three kinds of Oncomelania hupensis RNA extraction methods,namely a modified SDS method,TRIzol reagent method,and CTAB method,so as to obtain an economical and efficient method for RNA extraction from O. hupensis. Methods The modified SDS method,TRIzol reagent method and CTAB method were applied to ex-tract the RNA from O. hupensis. A nucleic acid protein analyzer was used to measure the concentration and purity of RNA. The yields were calculated by the concentration of the products. The purity was indicated by A260/A280 and A260/A230. The quality of RNA was inspected by 1% agarose gel electrophoresis. The β-acting gene was selected as the target gene for RT-PCR analysis. Re-sults The RNA yields obtained by using the three kinds of extraction methods were significantly different(F = 16895.85,P <0.01)according to the analysis of variance. The LSD test showed that the yields obtained by using the modified SDS method were the highest,and those obtained by the CTAB method were the lowest. The purity of RNA extracted by the CTAB method was su-perior to that by the other two methods,and the A260/A280 and A260/A230 ratios of the CTAB method were in the range from 1.8-2.0 and 2.0-2.2. The A260/A230 ratios of the other two methods were both lower than 2.0. The RNA extracted by the modified SDS meth-od had the better integrity. The electrophoresis results showed that the 28S rRNA band,18S rRNA band and 5S rRNA band were clear,and there was no obvious smear between each band. The RNA obtained by the TRIzol reagent method had no 28S rRNA band,and that obtained by the CTAB method had no 28S rRNA and 5S rRNA bands. The β-acting gene of the RNA ex-tracted by all the three methods could be amplified by RT-PCR. The costs and time-consuming of the modified SDS method were less than those of the other two methods. Conclusion The modified SDS method is an economic and efficient method,and it is suitable for extracting the RNA of O. hupensis,especially for large sample preparation.

Objective: To investigate the status and influencing factors of disease uncertainty among caregivers of colorectal cancer patients receiving chemotherapy, so as to provide insights into psychological interventions among caregivers. Methods: Caregivers of colorectal cancer patients hospitalized in Hunan Cancer Hospital, the Third Xiangya Hospital and the Second Xiangya Hospital for chemotherapy from March 2020 to December 2021 were recruited. Caregivers' demographics, health status, medical and nursing support and social support, as well as patients' demographics, frequency of chemotherapy and disease stage were collected using questionnaire surveys. Caregivers' disease uncertainty was evaluated using Chinese version of the Uncertainty in Illness Scale for Family Members, and factors affecting caregivers' disease uncertainty were identified using a multivariable linear regression model. Results: A total of 318 caregivers were enrolled, including 115 men (36.16%) and 203 women (63.84%), with a mean age of (45.89±6.57) years, and there were 186 caregivers as patients' spouses (58.49%). The mean score of disease uncertainty was (86.65±10.82) points, and the scores of the unpredictability dimension, uncertainty dimension, complexity, and lack of information dimension were (3.21±0.35), (2.98±0.48), (2.84±0.49) and (2.36±0.59) points, respectively. There were 285 participants with a high level of disease uncertainty (89.62%), and multivariable linear regression analysis identified social support (β′=-0.199), medical and nursing support (β′=-0.118), patient's age (β′=-0.155) and stage Ⅲ and Ⅳ of colorectal cancer (β′=0.151) as factors affecting caregiver's disease uncertainty. Conclusion Caregivers of colorectal cancer patients with chemotherapy have a high level of disease uncertainty, which is affected by social support, medical and nursing support, patient's age and duration of disease.

Objective To investigate the frequency of JAK2 V617F mutation and JAK2 V617F mutation allele burden in patients with essential thrombocythemia (ET), and explore the relationship between mutation and hematological parameters and coagulation function. Methods The clinical and laboratory parameters of 90 ET patients were analyzed. JAK2 V617F mutation was detected by AS-PCR and the mutation allele burden of JAK2 V617F was detected by qPCR. The correlation between mutation frequency and mutation burden of JAK2 V617F and blood laboratory parameters were investigated in ET. Results JAK2 V617F mutation was found in 50 patients (55.6 %). RBC [(4.67±0.89)×109/L vs (4.04±0.99)×109/L, P =0.003], WBC (11.64±5.20)×109/L vs (9.11±4.11)×109/L, P = 0.014], HCT (0.41±0.07) vs (0.36±0.07), P =0.005) in the JAK2 V617F mutated group were higher than those in the wild-type group. PT in mutated patients was longer than that in wild-type group [(13.18±1.63) s vs (12.02±1.24) s, P = 0.000]. The JAK2 V617F mutation allele burden was (29.91 ±18.63) %. No significant correlation was found between JAK2 V617F mutation allele burden and hematological parameters such as WBC, RBC and Plt (all P>0.05), but the JAK2 V617F mutation allele burden had a significant correlation with FDP (r = 0.456, P = 0.001). Conclusions JAK2 V617F mutation occurs in significant percentage patients with ET. Detection of JAK2 V617F mutation allele burden at diagnosis may play an important role in the early prevention of vascular events.