Objective To find out the factors that influence the mental health of the rural junior middle school students (JMSS).Methods 2406 JMSS in rural areas in Hunan province were assessed,using self-designed Demographic Data Recording Form, Adolescent Self-Rating Life Events Check List, Scale of APGAR, Perceived Social Support Scale,Simplified Coping Style Questionnaire,Eysenck Personality Questionnaire,Self-Esteem Scale and Scale of Mental Health.Results There were no significant difference between JMSS with different gender(P = 0.509 ), family income (P = 0.267 ), occupation of their fathers (P = 0.473 ), occupation of their mothers (P=0.105 ), education background of their mothers (P = 0.266 ).There were statistically significant difference between JMSS of different age (P = 0.000 ), grade (P = 0.000 ), whether their parents going out to work (P = 0.000 ),whether their parents divorced(P = 0.001 ) and education background of their fathers (P = 0.000 ); whether their parents going out to work (r = 0.095 ), life events (r = 0.522 ), family care (r =-0.146 ), the perceived social support (r =-0.186 ), positive coping style (r =-0.020 ), negative coping style (r = 0.369 ) and psychoticism (r = 0.322 ),internal and external(r =-0.132), emotional stability (r = 0.555 ), lie (r =-0.293 ) and self-esteem (r =-0.329)were significantly corrected with psychological health( P ＜ 0.01 ).Except age, grade, whether their parents going out to work and the education background and occupation of their parents,the remaining variables entered the regression equation,which could explained 51.2% of changes of the psychological health(F=227.809, P=0.000).Conclusion In order to promote the development of J MSS mental health, we can give then more care to reduce negative life events in their life,guide them to culture health personality and use active coping styles when encounter difficulties and setbacks through a series of health education, promote the healthy development of their personality.

Liver transplantation is an essential treatment of primary liver cancer,but the postoperative high risk of recurrence and metastasis has seriously affected the effect of liver transplantation.With the development of molecular biology,researchers have found numerous molec-ular markers potentially related to the recurrence and metastasis of liver cancer after liver transplantation.These markers,including genes, proteins,tumor markers,and serum viruses,are summarized,and their predictive values for tumor recurrence and metastasis after liver transplantation are analyzed.A growing number of molecular markers have been found,but which is not enough for clinical guidance.There-fore,more studies are needed to identify appropriate molecular markers of tumor recurrence and metastasis after liver transplantation.

Objective Leucine -rich repeat (LRR) -containing G protein -coupled receptor 6 (Lgr6) is glycoprotein hormone receptor and a part of G protein -coupled receptors (GPCRs).Lgr6 is composed of 977 amino acid residues of a polypeptide chain.Having 17 leucine -rich repeats and seven transmembrane domain.In the N -and C -termini are connected with cysteine -rich sequences.It is highest homologous to Lgr4 and Lgr5,but less relationship with thyroid stimulating hormone receptor,progesterone receptor,and follicle -stimulating hormone recep-tor.Research found out that Lgr6 marks in the hair follicles of stem cells can differentiate into all cells in the skin and Lgr6 expression in tumor also has important biological significance.

Objective To investigate the relationship of thyroid hormones and serum lipid profile during Pregnancy. Methods 30 cases of healthy pregnant women were recruited in the study. The thyrotropin (TSH), free triiodothyronine (FT3), free thyroxine (FT4) and serum lipid profile were examined at 9 ~ 12, 14 ~ 17, 23 ~ 26 and 37 ~ 40 weeks of gestation and the correlations between them were analyzed. Results Positive correlation could be found between serum TSH and total cholesterol (CHOL), triglyceride (TRIG), low density lipoprotein cholesterol (LDL-C), ApolipoproteinA-I (APOA-I), ApolipoproteinB (APOB). Negative correlations could be found between serum FT3, FT4 and total cholesterol (CHOL), triglyceride (TRIG), low density lipoprotein cholesterol (LDL-C), ApolipoproteinA-I (APOA-I), ApolipoproteinB (APOB). And no correlation was found between serum thyroid hormones and high density lipoprotein cholesterol (HDL-C). Conclusion The thyroid hormones were closely related to serum lipid profile except of HDL-C.

Objective:To study the metabolism of high density lipoprotein cholesterol ( HDL-C ) and apolipoprotein A-Ⅰ( ApoA-Ⅰ) in different thyroid function status during pregnancy. Methods:This study re-cruited thirty cases of euthyroid, with nineteen cases of subclinical hypothyroid and eight cases of subclini-cal hyperthyroid pregnancy. The concentrations of fasting serum HDL-C and ApoA-Ⅰwere detected and ana-lyzed from 9-12, 14-17, 23-26, and 37-40 gestational weeks. Friedman repeated measures ANOVA on ranks was adopted to analyze the changes of serum HDL-C and ApoA-Ⅰat different stages. General line-ar model ( GLM) was adopted to analyze the differences of serum HDL-C and ApoA-Ⅰin different thyroid function status during pregnancy. Results:There were no significant differences of maternal serum HDL-C among different stages (χ2 =5. 428,P=0. 143,χ2 =2. 027,P=0. 567,χ2 =2. 885,P=0. 410). There were significant differences of serum ApoA-Ⅰduring euthyroid and subclinical hypothyroid pregnancies (χ2 =46. 343, P<0. 001,χ2 =35. 984, P<0. 001), and no significant difference during subclinical hyperthy-roid pregnancy (χ2 =6. 750, P=0. 080). There were significant differences of serum HDL-C and ApoA-Ⅰbetween euthyroid and subclinical hyperthyroid pregnancies (P=0. 025,P=0. 027), and no significant differences between euthyroid and subclinical hypothyroid pregnancies (P=0. 378,P=0. 549). Conclu-sion:Subclinical hyperthyroidism affected the metabolism of maternal serum HDL-C and ApoA-Ⅰ, which could affect the fetal growth and development. Subclinical hypothyroidism ( after treatment with drugs) had no obvious effect on the metabolism of maternal serum HDL-C and ApoA-Ⅰ.

Objective To find out the differences between left -behind and non left-behind junior middle school students (JMSS) on Coping Style,Personality and Self-Esteem,and to analysis the influence of coping style,personality and self-esteem on mental health of left-behind JMSS.Methods 2406 JMSS in rural areas in Hunan were assessed,using self-designed Demographic Data Recording Form,Simplified Coping Style Question-naire,Eysenek Personality Questionnaire,Self-Esteem Scale and Scale of Mental Health for Chinese Middle-school Student.Results Score of positive coping style was lower(1.58±0.45 vs 1.64±0.46,P=0.011),while the score of negative coping style was higher(1.14±0.49 vs 1.09±0.48,P=0.022) for left-behind JMSS than for non-left-behind JMSS;the there were no significant differences on Pschoticism (P) (4.96±3.26 vs 4.83±3.23,P=0.357) ,Extraversion(E) (16.39±3.87 vs 16.61±4.06,P=0.592)and Lie(L) (2.77±3.76 vs12.84±3.71,P=0.447),while score of Neuroticism(N) (10.94±4.83 vs 10.46±5.03,P=0.020)for left-behind JMSS was higher than non-left-behind JMSS;score of self-esteem was loweR 26.67±3.55 vs 27.27±3.56,P=0.001)for left-behind JMSS than non-left-behind JMSS.Mental health of left-behind JMSS was signifi-candy correlated with positive coping style(r=-0.044),negative coping style(r=0.383),P(r=0.331),E(r=-0.113),N(r=0.548),L(r=-0.292) and self-esteem(r=-0.315) ;N (β=0.396),negative coping style (β=0.220),P(β=0.118),aelf-esteem (β=-0.146),positive coping style(β=0.074) and L(β=-0.071)entered the multiple linear regression equation,which can explained 41.1% of the changes on mental health of left-behind JMSS(F=150.602,P=0.000).Conclusion With parents going to cities to work,rural left-behind JMSS used negative coping styles to solve difficulties more,their developments of personality were un-healthier and their score of self-esteem were lower than non-left-behind JMSS,that interfered the development of their mental health.

Objective To find out the differences between left-behind and non left-behind junior middle school students (JMSS) on life events.Methods 2406 JMSS in rural areas were assessed in Hunan,using self-designed Demographic Data Recording Form ,Adolescent Self-Rating Life Events Check List and Scale of Mental Health for Chinese Middle-school Student.Results Stress from studying and interpersonal relationship were the major life events for rural JMSS,scores of the total score and all the factors of life event for left-behind JMSS were higher than non-left-behind JMSS' ;with the exception of the loss factor (5.13±2.56 vs 4.94±2.33,P=0.095),the difference on the total score of life events (49.22±13.25 vs 46.42±12.67,P=0.000),relation-ships(10.28±3.74 vs 9.86±3.49,P=0.009) ,learning pressure(11.52±3.66 vs 11.03±3.66,P=0.014),being published (11.84±4.47 vs 11.28±4.12,P=0.005),health adaption (6.18±2.19 vs 5.36±1.82,P=0.000)and other factor(6.12±2.26 vs 5.73±2.09,P=0.000) were significant;Scores of mental health for left-behind JMSS were higher than non left-behind JMSS,the difference was significant(2.18±0.56 vs 2.07±0.57,P=0.000);scores of international relationships (r=0.437) ,learning pressure (r=0.373),being published (r=0.345),less(r=0.199),health adaption(r=0.338),other factors(r=0.380) were significantly correlated with mental health of left-behind JMSS,relationships(β=0.229),learning pressure(β=0.177),health adap-tion (β=0.152) and other factor(β=0.117) entered the multiple linear regression equation,which can ex-plained 26.4% of the changes on mental health of left-behind JMSS.Conclusion Compared with the non-left-be-hind JMSS,the negative life events of left-behind JMSS were more frequently,with greater negative impact,lesse-ning the occurrence of negative life events in life of left-behind JMSS was one of the effective way to develop their mental health.

Objective To find out the differences between left-behind and non left-behind junior middle school students (JMSS) on family APGAR index (APGAR),perceived social support (PSSS) and mental health (MH);and to analysis the relationship among APGAR,PSSS and MH of left-behind JMSS.Methods 2406 JMSS in rural areas were assessed in Hunan,using self-designed Demographic Data Recording Form,Family AP-GAR Index,Perceived Social Support Scale and Scale of Mental Health for Chinese Middle-school Student.Results Left-behind JMSS' PSSS(59.27±11.78 vs 60.55±11.88,P=0.009),family support (19.12±4.69 vs 19.72±4.59,P=0.012),other support (20.29±4.59 vs 20.69±4.57,P=0.033) were lower;APGAR ((4.79±2.32 vs 5.08±2.46,P=0.014) and Adaptation (0.77±0.62 vs 0.87±0.62,P=0.001) lower;mental health status score higher (2.18±0.56 vs 2.07±0.57,P=0.000) than non-left-behind JMSS.APGAR was signifi-cantly correlated with PSSS(r=0.368,P<0.000) ;APGAR (r=-0.098),in which Adapt;on (r=-0.123),Growth (r=-0.074) and qmidu (r=-0.080,PSSS (r=-0.149),in which family support (r=-0.151),friend support(r=-0.089) and other support (r=-0.137)were significantly correlated with MH of left-behind JMSS(P<0.01),family support (β=-0.126) and adaption (β=-0.086)entered the multiple linear regression equation,which can explained 16.2% of the changes on mental health(F=20.049,P=0.000).Conclusion In order to improve mental health of JMSS,parents,caregivers,should give them more family care,schools and soci-ety should pay more attention to left-behind JMSS,and give them more help and a health environment in life,teach them to find social support and solve problems in life by them through a series of mental health education.

Objective To analysis the relationship among stressors,stress medi-factors and mental health of left-behind junior middle school students( JMSS) ,and to built a structural equation model on psychological stress of left-behind JMSS. Methods 1309 left-behind JMSS in rural areas in Hunan were assessed,using self-designed Demographic Data Recording Form , Adolescent Self-Rating Life Events Check List, Scale of APGAR,Perceived Social Support Scale,Simplified Coping Style Questionnaire,Eysenck Personality Questionnaire,Self-Esteem Scale and Scale of Mental Health for Chinese Middle-school Student. Results Life events (r = 0.08) influenced mental health directly,and it influenced mental health indirectly by acting on negative coping styles(r=0.01) and APGAR (r= -0.02). Social support(r= -0.02) ,self-esteem(r = 0.03) ,negative coping styles(r=0.07) ,positive coping styles (r= -0.04),P (r = 0.03) and N (r = 0.04) also influenced mental health directly. E(r = 0. 21) ,N(r = -1.87) and P(r= -0.83) and APGAR(r=0. 10) influenced mental health indirectly by the mediation of self-esteem; APGAR(r = 4. 89) influenced mental health by the mediation of social support. Conclusion Personality (P,N),life events, social support, APGAR, positive and negative coping styles, self-esteem impact on mental health of rural junior middle school students in different ways.

Plastic bronchitis is a rare condition characterized by bronchial casts, that may result in respiratory failure, suffocation and even death.Therefore, early diagnosis and treatment are of great significance.This article summarizes the imaging characteristics of plastic bronchitis, in order to further improve the understanding of the disease among pediatricians, radiologists, and emergency physicians.