Improving the quality of newborns is a health development strategy, which has attracted global attention. Adverse pregnancy outcomes, including preterm birth, low birth weight and small for gestational age, are major causes of perinatal mortality and disability. Based on review of international and national publications pertaining to associations between stressful life events during pregnancy and adverse pregnancy outcomes from 2007 to 2023, this review summarizes the correlation between stressful life events during pregnancy and adverse pregnancy outcomes, including preterm birth, low birth weight and small for gestational age, and describes the underlying biological mechanisms. Previous studies have demonstrated the associations between maternal stressful life events during pregnancy and adverse pregnancy outcomes, and the underlying mechanisms mainly include neuroendocrine regulation, inflammation and microbiota pathways; however, the exact mechanisms remain unclear until now. Further studies to identify the critical window period for the association between stressful life events and adverse pregnancy outcomes, and unravel the pathogenesis of adverse pregnancy outcomes are warranted, so as to provide insights into reduction of adverse pregnancy outcomes.

Objective To analyze the relationship between family factors and learning motivation of students in Xinjiang Medical University so as to provide scientific basis for promoting the medical undergraduates' learning motivation in the future.Method From April to June in 2014,using stratified cluster random sampling,2 000 college students from Xinjiang Medical University were surveyed by family factors and learning motivation questionnaire,and 1954 effective questionnaire were recycled.SPSS 17.0 was used to analyze the data,T test and variance analysis were conducted to the single factor and multiple linear regression analysis was made to multiple factors.Results All dimensions of 1 954 medical students' learning motivation shown were average,and the score of fear of failure was the lowest (2.82 ± 1.01).There were statistically significant differences in the scores of multiple dimensions of learning motivation of the medical students of different gender,nationality and grade (P＜0.05).And the scores in learning motivation in multiple dimensions of the medical students of different types of accounts,different family relationships,and different parental education level and whether they were the only child also had statistically significant difference (P＜0.05).Multi factor analysis showed that learning motivation,family account type,grade,gender,race,whether they were poor students and family relationships were the factors influencing the learning motivation of medical students.Conclusion Family factors have a great influence on the generation and maintenance of medical students' learning motivation,and it is necessary to change the poor education environment of the family,so as to interfere the students' learning motivation.

Objective To explore occupational stress level and chronic illnesses prevalence of nurses in Xinjiang first-class hospital and provide scientific basis of reducing the nurses' occupational stress and improving health interventions.Methods Using stratified cluster sampling method,1 585 nurses were investigated occupational stress level and the chronic diseases who were from Xinjiang around the five states 3 armour hospital.Results Compared with national norm,the nurses had high professional task scored 177.79±29.85 and tension scored 102.46±22.18,individual coping scores from resources scored 119.84±24.06 were lower.The propotion of low,moderate,high tension nurse respectively was 6.1％ (97/1 585),47.1％ (746/1 585),46.8％ (742/1 585).Night shift frequency,nationality,title and average monthly income difference were statistically significant in terms of occupational stress level (x2=1.28-37.96,all P＜0.05).Joint disease,neck lumbar disease,chronic digestive system disease prevalence of nurse were higher,its morbidity rates were 10.9％(172/1 585),24.9％(394/1 585) and 22.1％(350/1 585) respectively.Presence of chronic diseases of the digestive system in high,medium and low tension was statistically difference (x2=9.558,P ＜ 0.01).Conclusions Occupational stress level of nurse is higher,and chronic diseases occurences are associated with occupational stress level.So the nurses occupational stress need to control so as to reduce chronic diseases.

Objective To investigate the effect of continuous blood purification (CBP) on pro-or anti-inflammatory immune function and prognosis in patients with sepsis. Methods One hundred and two patients with sepsis were randomized into the CBP group (60 cases) and the control group (42 cases). The patients in the control group were treated with conventional therapy, and the patients in the CBP group received at least 72 h CBP treatment additionally. The APACHEⅡ score, SOFA score, the 28 day survival rate and ICU length of stay were recorded and levels of spleen Th1, Th2 were assessed by FACS flow cytometry. Enzyme linked immunoadsordent assay (ELISA) was used to determine the levels of serum IL-1, IL-10 and TNF-α before and at 24, 48, 72 h after the treatment. Results The APACHEⅡscore and SOFA score decreased markedly in the CBP group after the treatment (Р <0.05). The period of staying in ICU of patients in the CBP group was shorter than that of patients in the control group (Р < 0.05). There was no significant difference of the 28 day survival rate between the two groups (91.6% vs 71.2%, Р > 0.05). Compared with the control group, levels of IL-1, IL-10 and TNF-α were decreased markedly, and the ratio of Th1 / Th2 was increased significantly at 72 h after the treatment in the CBP group (Р < 0.05). Conclusion CBP can eliminate inflammatory mediators, and help to enhance the immune function, and restore the balance of Th1 / Th2 in patients with severe sepsis.

Objective To explore the influence of family factors on the social adaptability of post-graduate students in clinical medicine, and to provide scientific basis for training medical personnel with high social adaptability. Methods From September to November 2016, using stratified random sampling method, a questionnaire survey was conducted to investigate the family environment and social adaptability of 210 clinical professional postgraduates from three grades of a medical college in Xinjiang, the question-naire included the basic situation, family factors and the revised diagnostic questionnaire of social adapt-ability of Professor Zheng Richang. T test, ANOVA and multiple linear regression were carried out by using SPSS 17.0 software package. Results 201 valid questionnaires were returned with an effective recovery rate of 95.71％. The average value of the social adaptability of 201 clinical postgraduates was (17.00±11.12), so social adaptation ability of them was general. There were significant differences in the social adaptation ability of clinical professional master's degree between different genders, grades and working experience (P<0.05). The student was in difference family sources, length of life and father/mother master's degree had statistical significance difference in social adaptation ability (P<0.05). The score of graduate students from rural areas [(19.59±11.77)] was higher than that of urban students [(15.34±10.78)] and and city students (15.14±10.92). The postgraduates who left their homes for more than 10 years scored higher than those whose departure time was less than 10 years. Multi factor analysis found that gender, grade, mother's educa-tion, family sources, the number of home years and whether the work had a major impact on the social adaptability of clinical professionals. Conclusion The family factors of postgraduates in clinical medicine have an influence on their social adjustment ability. From the perspective of family environment, we should carry out the characteristics of intervention education to the students with poor social adaptation ability, in order to constantly improve the level of social adaptability of medical students.

OBJECTIVE: To assess the value of copy number variation sequencing (CNV-seq) and karyotyping in the prenatal diagnosis for carriers of balanced translocations. METHODS: Clinical records of 135 amniocentesis samples of balanced translocation carriers undergoing simultaneous CNV-seq and karyotyping were analyzed. Chromosomal aberrations were defined as those can definitely lead to birth defects definitely, which included chromosomal numerical abnormality, large deletion/duplication and pathogenic copy number variations (pCNVs). RESULTS: The detection rates for karyotyping and CNV-seq were 4.44% (6/135) and 5.93% (8/135) respectively, and the latter had a detection rate of 1.48(2/135) higher than the former. A total of 68 fetal chromosomal translocations were detected by karyotying analysis. CONCLUSION For couples carrying a balanced translocation, simultaneous CNV-seq and karyotyping is conducive to the detection of fetal chromosomal abnormalities and genetic counseling.
Chromosome Aberrations ; Chromosome Disorders/genetics* ; DNA Copy Number Variations ; Female ; Humans ; Karyotyping ; Pregnancy ; Prenatal Diagnosis ; Translocation, Genetic

Background Studies have shown that stress during pregnancy can affect the growth and development of fetuses and offspring, and this effect has sex differences, but the results are controversial, and there are few studies on the emotional damage of offspring of different sexes caused by stress during pregnancy. Objective This experiment is designed to observe the effect of chronic stress during pregnancy on emotional damage of offspring of different sexes. Methods Thirty-two SD female rats were randomly divided into a model group and a control group (16 rats in each group), 24 male rats were divided into a model mating group (n=16) and a control mating group (n=8). Each rat of the model group was reared in a single cage and received chronic unpredictable mild stress (CUMS) for 28 d, including hot water swimming for 5 min, cold water swimming for 5 min, tail pinching for 2 min, crowding for 24 h, moist bedding for 24 h, cage shaking for 30 min, and space restriction for 2 h. One stressor was administered daily and the same stressor did not repeat within 7 d. Blood was collected from the endocanthal vein of the two groups of female rats 1 d before and 1, 7, 14, 21, and 28 d after stress, the plasma was separated by centrifugation, and ¹³¹I radioimmunoassay was used to measure plasma corticosterone concentration. On postnatal day 21 (PND21), 16 offspring rats (half male and half male) were randomly selected from each group, their plasma corticosterone concentration was measured on PND28 and PND42, and their emotional damage was measured on PND42. Results The plasma corticosterone levels of dams in the model group on the 14th, 21th, and 28th days of stress [(394.02±97.40), (444.12±90.43), and (463.71±107.75) μg·L⁻¹] were higher than those in the control group [(285.63±81.64), (341.78±48.39), and (320.42±84.76) μg·L⁻¹] (all P< 0.05). On PND28 and PND42, the plasma corticosterone levels in the female model offspring group [(543.30±90.21) and (530.76±83.10) μg·L⁻¹] were higher than those in the female control offspring group [(397.77±64.27) and (325.78±61.03) μg·L⁻¹] (both P<0.05). In the sugar water preference test, the total fluid consumption [(10.74±1.28) mL], sugar water consumption [(5.50±1.30) mL], and 1% sucrose preference percentage [(20.36±3.41) %] in the female model offspring group were lower than those in the female control offspring group [(13.74±2.06) mL, (8.56±2.04) mL, and (62.11±8.05) %] (all P<0.05). In the open field test, the horizontal score, vertical score, and cleaning times of the male model offspring group were lower than those of the male control offspring group (all P<0.05). In the tail suspension test, the immobility time of the female and male model offspring groups [(126.95±39.88) and (70.24±28.98) s] was longer than the control offspring groups of the same sex [(54.30±24.99) and (38.63±18.91) s] (both P<0.05), and the duration of immobility time in the female model offspring group was longer (t=3.253, P=0.006). In the forced swimming test, the immobility time of the female model offspring group [(7.97±6.66) s] was longer than that of the female control offspring group [(1.85±2.12) s] (t=2.478, P=0.037). On PND42, the plasma corticosterone level of female offspring was negatively correlated with total fluid consumption, sugar water consumption, and 1% sucrose preference percentage (r=−0.621, r=−0.728, r=−0.699; P<0.05), and positively correlated with immobility time in the tail suspension test and immobility time in the forced swimming test (r=0.571, r=0.712; P<0.05), However, there was no correlation between plasma corticosterone and emotional indicators on PND42 in male offspring (P>0.05). Conclusion Chronic stress during pregnancy causes emotional damage to the offspring, and female offspring show depression-like behaviors.

Objective To investigate the association between 5-hydroxytryptamine 2A(5-HT2A) receptor gene polymorphisms and occupational stress in oilfield workers.Methods Cluster sampling was used to select 826 oilfield workers from January to August,2013.The SNaPshot single nucleotide polymorphism (SNP) genotyping method was used to determine the genotypes of rs6313,rs1923884,and rs2070040 in 5-HT2A receptor gene,and the Occupational Stress Inventory-Revised Edition was used to analyze occupational stress in these workers.Results There were no significant differences in occupational stress between groups with different individual characteristics (P＞0.05).As for the comparison of occupational stress scores between workers with different genotypes of each SNP of 5-HT2A receptor gene,the workers with CC and CT genotypes of rs6313 had significantly higher role boundary scores than those with TT genotype (P＜O.05),and the workers with CC genotype had a significantly higher vocational stress score than those with CT genotype (P＜0.05);the workers with CT genotype of rs1923884 had a significantly higher occupational role score than those with CC genotype (P＜ 0.05) and a significantly higher coping resources score than those with CC and TT genotypes (P＜0.05);the workers with AG genotype of rs2070040 had a significantly higher vocational stress score than those with AA genotype (P＜0.05).The ordinal multinomial logistic regression analysis showed that workers with CT genotype of rs1923884 were susceptible to occupational stress (OR=1.56,95％CI 1.10～2.20).Conclusion CT genotype of rs1923884 in 5-HT2A receptor gene may be associated with the susceptibility to occupational stress in oilfield workers.

Objective To investigate the association between 5-hydroxytryptamine 2A(5-HT2A) receptor gene polymorphisms and occupational stress in oilfield workers.Methods Cluster sampling was used to select 826 oilfield workers from January to August,2013.The SNaPshot single nucleotide polymorphism (SNP) genotyping method was used to determine the genotypes of rs6313,rs1923884,and rs2070040 in 5-HT2A receptor gene,and the Occupational Stress Inventory-Revised Edition was used to analyze occupational stress in these workers.Results There were no significant differences in occupational stress between groups with different individual characteristics (P＞0.05).As for the comparison of occupational stress scores between workers with different genotypes of each SNP of 5-HT2A receptor gene,the workers with CC and CT genotypes of rs6313 had significantly higher role boundary scores than those with TT genotype (P＜O.05),and the workers with CC genotype had a significantly higher vocational stress score than those with CT genotype (P＜0.05);the workers with CT genotype of rs1923884 had a significantly higher occupational role score than those with CC genotype (P＜ 0.05) and a significantly higher coping resources score than those with CC and TT genotypes (P＜0.05);the workers with AG genotype of rs2070040 had a significantly higher vocational stress score than those with AA genotype (P＜0.05).The ordinal multinomial logistic regression analysis showed that workers with CT genotype of rs1923884 were susceptible to occupational stress (OR=1.56,95％CI 1.10～2.20).Conclusion CT genotype of rs1923884 in 5-HT2A receptor gene may be associated with the susceptibility to occupational stress in oilfield workers.

OBJECTIVE: To study the current status of musculoskeletal disorders( MSDS) among medical staffs,and to analyze the relationship of MSDS,sleep quality and occupational stress. METHODS: Four hundred and fourteen medical staffs from a tertiary hospital were selected as research subjects by using judgment sampling method. The questionnaires of Nordic Musculoskeletal Questionnaire,Pittsburgh Sleep Quality Index and Core Questionnaire of Occupational Stress were answered and analyzed. RESULTS: The annual prevalence and week prevalence of MSDS were 67. 9%( 281/414) and 58. 5%( 242/414) in the study group. The neck,waist and shoulder were areas of high incidence of MSDS in the medical staffs,and the annual prevalence was 67. 9%,67. 6% and 54. 6%,while the week prevalence was 56. 5%,58. 5% and 47. 8% respectively. There were 58. 9%( 244/414) medical staffs who had sleep problems. The MSDS annual prevalence,week prevalence of neck and shoulder for poor sleep quality in medical staffs were higher than that of good sleep quality group( P < 0. 05). There were 30. 2%( 125/414) medical staffs who had occupation stress. The annual prevalence,week prevalence of neck and shoulder MSDS in the occupation stress group of medical staffs were higher than the non-occupation stress group( P < 0. 05). Multivariate logistic regression analysis showed that length of service,sleep duration,sleep quality and work requirements were the risk factors of MSDS( P < 0. 05). CONCLUSION: The incidence of MSDS is higher in medical staffs with poor sleep quality and high occupational stress.