Objective To analyze the role of sleep quality (SQ) in quality of life (QOL) ofheroin addicts receiving methadone maintenance treatment (MMT).Methods A total of 603 heroin addicts completed the socio-demographic questionnaire,Pittsburgh Sleep Quality Index (PSQI),and the World Health Organization'sQuality of Life Questionnaire-Brief Version (WHOQOL-BREF).Hierarchical Multiple Linear Regression was used to examine the unique contribution of SQ in the explanation of QOL.Results The overall unique contributions of the seven components in PSQI,measured by △R2,ranged from 0.139 to 0.216,which could account for 41.3％ ～55.7％ of the total explainable variance in the four domains of WHOQOL-BREF.Conclusion SQ is an important predictor of Q0L in heroin addicts receiving MMT.QOL can be improved through the intervention of low SQ.

Objective To analyze the family and clinical characteristics of talking about killing self (TAKS) among children and adolescents and its relationship with social competency.Methods One thousand nine hundred and seventy-five 7-17-year-old students from 12 schools (each four for primary,middle and high schools) of Wuhan area,were approached through multistage random cluster sampling,and administered with a self-designed general information questionnaire and the Chinese version of Children' s Depression Inventory.In addition,subjects' parents completed Achenbach' s Child Behavior Checklist (CBCL).TAKS was judged based on item 91 (talk about killing self) of CBCL.Multiple Logistic Regression was used to identify factors associated with TAKS.Results The half-year prevalence rate (95％ CI) of parent-reported TAKS was 4.1％ (3.2％,5.0％).TAKS was significantly associated with bad marital status of parents (OR=2.29),unemployment of fathers (OR=2.07),frequently jangling between father and mother (OR=2.23),parents ever having fought with each other intensely (OR=2.00),being frequently bullied by classmates (OR=2.11),internal behavior problem (OR=2.28),external behavior problem (OR=2.50) and depressive symptoms (OR=4.83).TAKS subjects had significantly lower social compctency score than non-TAKS subjects((18.8±7.6) vs.(20.9±6.9),P=0.007).Conclusion The prevalence of TAKS is higher among children and adolescents with several disadvantaged family factors,behavior problems and depression.Children and adolescents with TAKS also have worse social competency.More close clinical attention should be paid to such phenomenon.

Objective To explore the relationship between smoking and pain intensity in heroin-dependent patients (HDPs) receiving methadone maintenance treatment (MMT).Methods A total of 603 HDPs from MMT outpatients completed a socio-demographic and clinical characteristics questionnaire,a smoking questionnaire,Heaviness of Smoking Index,and Zung's Self-rating Depression Scale.Five-point Verbal Rating Scale was used to assess pain intensity.Results After adjustment for the confounding effects of socio-demographics,clinical characteristics,and depressive symptoms in the analysis of covariance,smokers had significantly higher pain intensity score compared with non-smokers (F=1 1.836,P=0.002).Multiple comparisons showed that the pain intensity level of patients with moderate-to-severe nicotine dependence was the highest,patients with mild nicotine dependence took the second place,and patients with no nicotine dependence was the lowest [(3.11±1.04) vs.(2.67±1.13) vs.(2.47± 1.15),all P＜0.05].Conclusion Smoking is significantly associated with pain in HDPs receiving MMT.The more severe the nicotine dependence that a HDP has,the intense the pain he/she has.

Objective To explore the relationship between depression and anxiety and peripheral blood cell counts ( white blood cell ( WBC) ,neutrophil ( NEU) ,lymphocyte ( LYM) ,red blood cell ( RBC) and hemoglobin ( HGB) ) of heroin?dependent patients receiving methadone maintenance treatment ( MMT) . Methods Two hundred and fifty?two MMT heroin addicts, who had received peripheral blood tests within the week prior to the study,were administered with a general information questionnaire,SDS and SAS. The results of blood tests of these patients were compared with those of 109 healthy people in physical examina?tion. Multiple linear regression was used to analyze associations between indicators of peripheral blood cell counts and depressive and anxiety symptoms. Results Compared with healthy controls,MMT patients had significantly higher proportions of elevated WBC(14.7%vs 3.7%),NEU(12.7% vs 2.8%) and LYM(9.9%vs 2.8%) counts (all P<0.05),and low RBC(10.3%vs 4.6%) counts and HGB(11.5%vs 4.6%) concentra?tion (both P<0.05). Multivariate linear regression analysis showed that blood cell counts of WBC ( β=0.261, P<0.01),NEU ( β=0.264, P<0.01),LYM ( β=0.196, P=0.003) and RBC ( β=-0.144, P=0.021) were independently associated with depression;and blood cell counts of WBC ( β=0.298, P<0.01) and LYM ( β=0.269, P<0.01) were independently associated with anxiety. Conclusion Improving the in?flammatory and malnutrition status may be helpful for reducing depressive and anxiety symptoms of MMT her?oin addicts.

Objective Based on the principles of laser radiation protection, medical metroiogy and photoelectron technology, an automatic verification device and testing technology to provide verification and performance evaluation for laser protective spectacles and equipments which have the various functions in laser protection have been developed and established. Methods The current system comprises laser source, laser measuring instruments, software of computer detection and control and modules of optics and mechanics used in auxiliary equipment. By use of the verification device and the special test-recording method to be designed and studied by us, the measured data can be automatically acquired, processed, recorded, saved and printed and, furthermore, many parameters on protective performance of the measured laser protective spectacles can be tested and given. Results Laser wavelength of the verification apparatus are 1 064 nm and 532 nm, response range of wavelength is from 0.4 m to 1.1 μm, measuring range of laser energy is from 10-8 J to 0.3 J, measuring range of optical density for laser protective spectacles is from 0.1 to 8.0, stability is 0.21%, measuring uncertainty is 5%(k=2). Conclusion The automatic verification device is steady and reliable. The achieved performance indexes accord with the requirement of national standard on laser protection.

Objective To establish a patient-derived xenografts (PDX) mouse model of liver cancer (LC) and to explore its role in precision medicine.Methods PDX model was established by subcutaneous implantation of tumor tissues in NCG mice.The morphological structure of tumor tissue was exaimed using HE staining.Fifteen BALB/c nude mice were subcutaneously inoculated with tumor cell suspension from the PDX models.The xenograft mice were randomly divided into 5-fluorouracil (5-FU) group, sorafenib group and negative control group.The tumor volume and body weight of the tumor-bearing mice were measured regularly, the tumor inhibition rate was calculated and the curative effect was evaluated.Results The success rate was 33.3% (6/18) in the establishment of liver cancer PDX mouse model, and the model well retained the characteristics of the primary tumor.In one case of PDX mouse model, the tumor inhibition rates of 5-FU and sorafenib group were 63.7% and 29.6%, with a statistically significant differece between them (P< 0.05), and there was no significant difference between the sorafenib group and negative control group, consistent with clinical observation.Conclusions The PDX mouse model of liver cancer can maintain the histological structure of primary tumor, and can be applied to precision medicine for patients with liver cancer.

Objective To explore the protective effect of erythropoietin(EPO) administrated by intranasal on cerebral ischemia reperfusion in rats with acute cerebral infarction reperfusion.Methods Total of 100 SD rats were divided into model control group,sham operation group,intraperitoneal administration group ([PEPO group),nasal saline group (INNS group) group,and nasal drug delivery group (INEPO group) with 20 in each group.The middle cerebral artery occlusion model of rat was established by thread embolism method and the NSS method was used to evaluate the neural behavior of rats.The expression of EPO in peripheral blood,cerebrospinal fluid and brain regions of rats were detected by Elisa.The vascular endothelial growth factor(VEGF) in brain was detected by immunofluorescence and then the density of newborn blood vessels in the brain was measured.Results Fifteen days after the operation,the NSS score of INEPO group(3.80± 1.61) was significantly lower than that of IPEPO group (11.53±2.11),and the difference was statistically significant(P＜0.01).And the levels of EPO in blood,cerebrospinal fluid and different brain regions of rats in INEPO group were higher than that of INNS group(all P＜0.01).Compared with IPE-PO group,the level of EPO cerebrospinal fluid and different brain regions of rats in INEPO group increased obviously,the difference was statistically significant (all P＜0.01),and the EPO concentration of the olfactory bulb was the most obvious (INEPO group:(1 456.90 ± 128.22) pg/ml,IPEPO group:(426.11 ± 36.68)pg/ml,P＜0.01).Seventy-two hours after operation,the expression of CD31 in ischemic penumbra of rats of model control group (18.21 ± 3.45),INNS group (18.54 ± 2.58),IPEPO group (27.01 ± 2.13) and INEPO group(35.52±2.79)was increased compared with sham operation group (5.14± 1.28),and the difference was statistically significant (all P＜0.05).The expression of CD31 in IPEPO group and INEPO group was significantly higher than that in INNS group (P＜0.05).In INEPO group,the expression of CD31 increased significantly compared with that of IPEPO group (P＜0.05).Conclusion Nasal administration of EPO can effectively improve the neurological function of rats with ischemia-reperfusion,and increase the expression of CD31 in the brain tissue of rats.The effect of nasal administration is better than that of intraperitoneal administration.

Hair loss is a common problem encountered by both male and female in social life. A variety of systemic diseases, skin diseases, trauma, etc. can lead to hair loss, but androgenetic alopecia is its main cause. Hair loss can cause a series of influences, such as affecting one's self-esteem and emotional health. Healthy and beautiful hair is very important for a person's external image, and the external image can affect a person's work and life to some extent. Hair transplantation surgery has gradually evolved, and its surgical effect is remarkable. However, hair transplantation technology is still not perfect and still faces many challenges, including the supply of hair, the survival rate of the hair, the length of the operation and the concealment of marks after the operation. In this paper, the current status of hair transplant surgery and some important challenges and possible solutions were discussed.

Objective To explore the application of Plan-Do-Check-Act(PDCA)cycle management to continuously im-prove the service quality of outpatient pharmacy and enhance patient satisfaction.Methods To address the problem of long wait-ing time for patients in outpatient pharmacy,we applied PDCA cycle to investigate the factors affecting patients'waiting time in the process of medicine collection,analyze the current situation,determine the expected goals,formulate the service quality im-provement plan of outpatient pharmacy,implement the improvement plan,follow up and supervise,and summarize and analyse the problems regularly until it was solved.Results After implementing the PDCA cycle in the management,the service quality of outpatient pharmacy was improved,the waiting time was significantly shortened and the satisfaction of medical treatment was in-creased.Conclusion The application of PDCA cycle method is effective in improving the service quality of outpatient pharmacy.Therefore,it is recommended for broader implementation.

Hydration status refers to the balance between the intake and discharge of water in the body. When the ingested and discharged water are roughly equal and the body is in water balance, it is the normal hydration status, and when the water intake is too little or too much, it is the "dehydration" or "overhydration status". The hydration status of the body not only affects metabolism, but also affects the functions of the urinary system, cardiovascular system, nervous system, etc. In order to further clarify the relationship between body hydration status and decompression sickness (DCS), this paper reviewed relevant studies and analyzed the interaction between hydration and decompression safety during diving. The primary causes of dehydration in diving are "hyperbaric diuresis", "immersion diuresis", breathing dry gas, heat, and cold. Dehydration not only promotes the occurrence of DCS but also reduces the aerobic work efficiency and athletic performance of divers, as well as affects cognition and mood. A study found that appropriate rehydration before and during diving can reduce the risk of DCS, which possibly associates with the increase of blood volume, plasma surface tension, and vasoconstriction. Fluid therapy is also important for those who already have DCS. This paper analyzed the amount, nature, timing, and effect of rehydration involved in the above links, comprehensively sorted out the relationship between hydration and diving safety, summarized the existing problems, and provided reference for practical application and future research.