Middle East respiratory syndrome coronavirus (MERS-CoV) is an emerged human coro-navirus causing serious respiratory syndrome. The etiological and epidemiological characteristics of MERS along with the recent advances in MERS will be briefly described in this review.

Well-differentiated primary human airway epithelial cell culture (HAE), an organotypic human airway culture system, has been increasingly used as a linkage between researches conducted on animal models and humans.In this review, we focus on progress in technological development and its application in virology.The following aspects are covered in this review: (1)Structure and function of the normal airway, (2)Role of respiratory epithelial cells in pulmonary innate immunity, (3)Development of primary human airway epithelial cell cultures, (4)Application of primary human airway epithelial cell cultures in virology.

BACKGROUND: The effect of cognitive therapy on psychological stress is not remarkable and optimal. Some psychocatharsis through physical activities cannot be accepted by many clients.OBJECTIVE: To explore an effective method to treat and relieve psychological stress.DESIGN: A controlled (the blank control and the self-control) observation study and single blind trial.SETTING: Department of Preventive Medicine, Medical College of Jinagsu University.PARTICIPANTS: Clients who suffered from emotional suppression or nervous stress would be tested with "psychological stress test". Forty clients, with scores over 5, were selected as the subjects. They were randomly divided into two groups matching of ages and scores: control group (n=20) and experimental group (n=20).METHODS: Clients in the control group were treated with common cognitive therapy by means of talking, and those in the experimental group accepted a sing a song loudly therapy. The song named as Qinghai-Tibet Plateau was selected for the treatment. The clients were requested to sing the song loudly in order to release their stress and vent their repression.The psychologist used the language introduction by background music to make a client under a special kind of psychological situation and emotional state when the music was played for one to two times. Then the psychologist would turn up gradually the volume of sound to the maximum when the music was played for the third time. The volume from the VCD would overwhelm that from the client's voice in order to cover up the singer's shyness. The client sung the song of Qinghai-Tibet Plateau loudly for four to five times. The therapeutic room was required to have a blanch curtain.The sound insulation also was required. The soundscape of the loudspeakers should be wide. The power magnifier should be strong. The loudspeaker should be high fidelity. The questionnaire of psychological stress test was adopted in both groups before and after therapy respectively. It had 30 items for the self-diagnosis of symptoms. The client was diagnosed as a low stress if his or her score reached 5, 11-20 as sever stress, and above 21 as adaptability disorder.MAIN OUTCOME MEASURES: Scores of stress level were observed before and after therapy in both groups.RESULTS: The scores in the control group before and after therapy were approximately the same (15.6±5.3 vs 14.7±4.8, t=1.739, P ＞ 0.05). The scores in the experimental group after therapy was significantly lower than those before therapy (11.6±5.8 vs 15.5±6.1, t=9.863, P ＜ 0.05). After therapy, the scores in the experimental group were significantly lower than those in the control group (11.6±5.8 vs 14.7±4.8, t=4.811, P ＜ 0.05).CONCLUSION: Sing a song loudly is an effective method that is easy to operate in treating psychological stress.

Melatonin holds a wide range of biological effects, its multi-channel and multi-target impacts on reproductive sys-tem are the basis of pregnancy related rhythm, including conception, the duration of pregnancy and delivery.This paper describes the synthesis of melatonin, the characteristics of melatonin receptors distribution and melatonin′s biological property.It also illuminates the influence of melatonin rhythm on the above-mentioned courses, hoping to provide theory basis for clinical suggestions to modulate rhythm around pregnancy.

Objective:To explore the prognosis of posttraumatic stress disorder (PTSD) in flood survivors 13 years after they had been diagnosed with PTSD symptoms,and investigate the relationship between their personality traits and the prognosis of PTSD.Method:In this cross-sectional study,the survivors of Dongting Lake flood in 1998-1999 in Hunan in China,who were investigated and screened as PTSD symptoms positive in 2000 were selected as the target population,from which a sample of 200subjects was drawn using amulti-stage random sampling method.The Posttraumatic Stress Disorder Scale Civilian Version (PCL-C) was used to examine and re-screen the participants of PTSD symptoms in order to explore the prognosis of PTSD.Participants whose PCL-C scores were equal to 44 or higher were classified as the PTSD symptoms positive group,while those with PCL-C scores less than 44 were classified as the recovered group.Personality traits were then assessed,using the Revised Eysenck Personality Questionnaire Short Scale for Chinese (EPQ-RSC),in both the recovered group and the PTSD symptoms positive group.Finally,the multivariate logistic regression analysis was used to investigate the relationship between the prognosis of PTSD and personality traits.Results:Totally 200 subjects were eligible for this study and completed the questionnaires,but 16 of them had their questionnaires excluded from data analysis because they provided incomplete information.Thus,the response rate was 92.0％.According to the PCL-C's cut-off score,22 participants were still screened as PTSD symptoms positive and were classified as the PTSD symptoms positive group,whereas the other 162 participants were screened as PTSD symptoms negative and were classified as the recovered group.Compared with the recovered group,the EPQ-RSC extroversion scores for the PTSD symptoms positive group were significantly lower [(51.8 ± 10.7) vs.(45.1 ± 13.2),P ＜ 0.05] and their neuroticism scores were significantly higher [(46.5 ± 10.1) vs.(58.3 ± 12.2),P ＜ 0.05].The multivariate logistic regression analysis showed,after adjusting for the variables such as gender and age,that higher neuroticism (OR ＝ 3.63,95％ CI:1.05 -12.54) was a risk factor for the persistent PTSD symptoms in the flood survivors.Conclusions:It suggests that neuroticism is associated with prognosis of PTSD in flood survivors,those with higher neuroticism scores appear to have problems to recover from PTSD.

Objective To sequence and analyze the complete genome of two human coronavirus NL63 (HCoV-NL63) strains collected from Beijing Children Hospital .Methods Eighteen pairs of primers were designed according to the gene sequences of HCoV-NL63 reference strain ( HCoV-NL63_Amsterdam 1) and used to amplify the target fragments covering the complete genome of HCoV-NL63 strains.Rapid ampli-fication of cDNA ends ( RACE) and RT-PCR assays were used to amplify the full length genome of HCoV-NL63 strains.Phylogenetic analysis was conducted by using Mega 5.0 software.Results The complete ge-nome sequences of the two HCoV-NL63 strains were 27 538 bp in length, showing a homology of 99.1%in nucleotide sequences .There were 15 consecutive bases deleted from 1a region.The systematic phylogenetic analysis demonstrated that four genotypes of NL 63 virus including A , B, C and D have been identified , and two domestic strains were belonged to the new genotype D .Conclusion The complete genome sequences of two domestic HCoV-NL63 isolates were identified for the first time .This study provided evidence for further investigation on molecular epidemiology of HCoV-NL63 in China .

Objective To prepare and screen out monoclonal antibodies against the receptor bind-ing domain (RBD) of Middle East respiratory syndrome coronavirus ( MERS-CoV) spike ( S) protein in mice. Methods The RBD of MERS-CoV S protein expressed in the insect-baculovirus system was purified and then used to immunize the female BALB/ c mice. The spleen cells collected from the mice were fused with myeloma Sp2 / 0 cells. The positive hybridoma cells were obtained by using limited dilution method. Enzyme-linked immunosorbent assay ( ELISA), Western blot assay and neutralization test based on the MERS-CoV pseudovirus were performed for further screening and identification. Results Twelve strains of hybridoma cells that produced the monoclonal antibodies against RBD of MERS-CoV S protein were screened out. All of the 12 monoclonal antibodies (McAbs) could have specific reaction with the RBD of MERS-CoV S protein as indicated by the results of ELISA. Of the 12 McAbs, two were identified as the immunoglobulin M (IgM) isotype and the rest were IgG1 isotype by using double antibodies sandwich ELISA. Four McAbs including 1F1, 2E4, 3C3 and 3E6 were identified as having neutralizing activity by the neutralization test based on MERS-CoV pseudovirus. Results of the Western blot assay showed that the four McAbs (1F1, 2E4, 3C3 and 3E6) could have specific reaction with the RBD of MERS-CoV S protein, but no cross-reac-tion with that of SARS-CoV S protein. Conclusion Twelve mouse-derived McAbs against the RBD of MERS-CoV S protein were obtained. The prepared hybridoma cells showed the characteristics of high speci-ficity and stability in antibody secretion. Four out of the 12 McAbs were proved to have neutralizing activity.

OBJECTIVE To find out the main commonly encountered pathogen and antibiotic resistance in hospital infection in Department of Neurosurgery. METHODS Clinic samples from Jun 2005 to Jun 2007 were collected and drug sensitive test was taken.RESULTS The most commonly encountered pathogens of infection were Gram-negative bacillI(83.1%),including Klebsiella pneumoniae(25.0%),Escherichia coli(19.1%),andAcinetobacter baumannii(10.3%). The three kinds of pathogens had heavy resistance to at least 8 kinds of antibiotics. The resistance rates to imipenem and ofloxacin were the lowest (6.8% and 32.4%). CONCLUSIONS The pathogens isolated from Departmentof Neurosurgery are Gram-negative bacilli which have multiple antibiotic resistance. The key prevention measures of infection are to control prophylatcic usage of the third generation cephalosporins,strengthen environmental microbial monitoring,hand sterilization and cleaning among the medical staff.

BACKGROUND:Pain after hip replacement is a difficulty for orthopedic surgeons,and revision surgery might result in severe wound for patients undergoing hip replacement.Extracorporeal shock wave(ESWT) is certificated effective for relieving pain.OBJECTIVE:To evaluate the effects of ESWT on the pain after hip replacement.DESIGN,TIME AND SETTING:Case self-control,double-blind evaluation.The experiment was performed at the Department of Orthopaedics,Zhongnan Hospital,Wuhan University between June 2004 and February 2008.PARTICIPANTS:Fifty-one cases(61 hips) undergoing total hip replacement with pain were selected,including prosthetic loosening(cemented:16 cases,20 hips;non-cement:12 cases,16 hips),ectopic ossification(8 cases,10 hips),acute infection(4 cases,4 hips),chronic infection(5 cases,5 hips),soft tissue aseprtic inflammation(4 cases,4 hips) and acetabulum dislocation(2 cases,2 hips).METHODS:These patients received sessions of ESWT(4 000 shocks,3 times/s),with an energy ranging from 0.54 to 1.06 MJ/mm2,once a week for 8-12 weeks.MAIN OUTCOME MEASURES:Visual analog scale(VAS),Harris hip scores,diversity of the sclerotin surrounding the prosthesis(X-ray).RESULTS:The 51 patients were followed up for 18-64 months(4.1years in average),and 2 died during this period.The scores of VAS in non-cement,chronic infection,ectopic ossification and soft tissue aseprtic inflammation groups were significantly decreased than before treatment(P

Objective To study the chemical constituents of Aeschynomene indica.Methods The constituents were isolated and purified by means of silica gel column chromatography and recrytallization,and the structures were elucidated by physicochemical properties and spectral analyses.Results Twelve compounds were obtained and elucidated as stigmasterol tritriacontanate (1),monotetracontane (2),taraxerol (3),stigmasterol (4),stearic acid (5),heptatriacontanoic acid (6),arachidic acid (7),ursolic acid acetate (8),quercetin (9),myricetin (10),myricetin-3-O-rhamnoside (11),and rutoside (12).Conclusion All the compounds are isolated from this plant for the first time and compound 1 is a new one.