Objective To explore the differences in inflammatory cytokine levels between adolescent patients with unipolar and bipolar depressive disorders.Methods A total of 32 patients aged 15-24 years with major depressive disorder(unipolar group),53 patients with bipolar depressive episodes(bipolar group),and 25 healthy controls(control group)were enrolled.The 17-item Hamilton depression scale(HAMD-17),Hamilton anxiety scale(HAMA),and 32-item hypomania checklist(HCL-32)were used to assess the clinical symptoms of the patients.The levels of inflammatory cytokines in all samples were measured using the enzyme-linked immunosorbent assay(ELISA)method.Results Compared with the unipolar group,the bipolar group had an earlier age of onset,a longer total disease duration,a shorter current episode duration,lower HAMD scores,and higher HCL-32 scores,with significant differences(P<0.05).There were significant differences in the levels of interleukin-1β(IL-1β),IL-6,interferon-γ(INF-γ),tumor necrosis factor-α(TNF-α),tumor necrosis factor receptor 2(TNFR2),IL-4,IL-10,and IL-13 among the three groups of subjects(P<0.05).Pairwise comparison showed that compared with the control group,both unipolar and bipolar groups exhibited the significant elevations in pro-inflammatory cytokines IL-1β,IL-6,and TNF-α(all P<0.05)and remarkable reductions in the anti-inflammatory cytokines IL-4,IL-10,and IL-13(all P<0.05).The levels of INF-γ and TNFR2 were significantly higher in the bipolar group than in the control group(P<0.05).Compared with the unipolar group,the levels of INF-γ[43.25(29.27,53.63)pg/mL vs.62.76(39.27,89.16)pg/mL]and IL-13[16.92(14.74,24.02)pg/mL vs.22.29(17.35,36.52)pg/mL]were significantly increased in the bipolar group.Multivariate logistic regression analysis showed that IL-13(OR=1.078,95％CI:1.011-1.150,P=0.022)was independently associated with bipolar depressive disorder.Conclusion Adolescents with unipolar and bipolar depressive disorders exhibit changes in inflammatory cytokines,and the IL-13 and INF-γ are higher in bipolar depressive episodes than in major depressive disorder.Higher levels of IL-13 are associated with bipolar depressive disorder.

Objective To explore the differences in inflammatory cytokine levels between adolescent patients with unipolar and bipolar depressive disorders.Methods A total of 32 patients aged 15-24 years with major depressive disorder(unipolar group),53 patients with bipolar depressive episodes(bipolar group),and 25 healthy controls(control group)were enrolled.The 17-item Hamilton depression scale(HAMD-17),Hamilton anxiety scale(HAMA),and 32-item hypomania checklist(HCL-32)were used to assess the clinical symptoms of the patients.The levels of inflammatory cytokines in all samples were measured using the enzyme-linked immunosorbent assay(ELISA)method.Results Compared with the unipolar group,the bipolar group had an earlier age of onset,a longer total disease duration,a shorter current episode duration,lower HAMD scores,and higher HCL-32 scores,with significant differences(P<0.05).There were significant differences in the levels of interleukin-1β(IL-1β),IL-6,interferon-γ(INF-γ),tumor necrosis factor-α(TNF-α),tumor necrosis factor receptor 2(TNFR2),IL-4,IL-10,and IL-13 among the three groups of subjects(P<0.05).Pairwise comparison showed that compared with the control group,both unipolar and bipolar groups exhibited the significant elevations in pro-inflammatory cytokines IL-1β,IL-6,and TNF-α(all P<0.05)and remarkable reductions in the anti-inflammatory cytokines IL-4,IL-10,and IL-13(all P<0.05).The levels of INF-γ and TNFR2 were significantly higher in the bipolar group than in the control group(P<0.05).Compared with the unipolar group,the levels of INF-γ[43.25(29.27,53.63)pg/mL vs.62.76(39.27,89.16)pg/mL]and IL-13[16.92(14.74,24.02)pg/mL vs.22.29(17.35,36.52)pg/mL]were significantly increased in the bipolar group.Multivariate logistic regression analysis showed that IL-13(OR=1.078,95％CI:1.011-1.150,P=0.022)was independently associated with bipolar depressive disorder.Conclusion Adolescents with unipolar and bipolar depressive disorders exhibit changes in inflammatory cytokines,and the IL-13 and INF-γ are higher in bipolar depressive episodes than in major depressive disorder.Higher levels of IL-13 are associated with bipolar depressive disorder.

Background Currently,the diagnosis of depressive disorder relies on symptomatology,which is greatly influenced by subjective factors such as clinicians' experience.Finding more accurate and reliable quantitative diagnostic methods is currently an urgent problem.Objective To explore the value of Fisher discriminant function based on inflammatory cytokines in the diagnosis of depressive disorder,so as to provide references for clinical diagnosis.Methods A total of 136 patients diagnosed with depressive disorder according to the Diagnostic and Statistical Manual of Mental Disorders,fifth edition(DSM-5)criteria,who underwent inpatient treatment at Hebei Mental Health Center from April 2020 to November 2020,were enrolled as study group.67 healthy participants matched for age and gender,was recruited during the same period.Serum levels of inflammatory cytokine were measured using enzyme-linked immunosorbent assay(ELISA).Fisher discriminant model was employed to establish a discriminant function for inflammatory cytokines exhibiting significant statistical differences between study group and control group,which was then validated.Results The levels of pro-inflammatory cytokines interleukin-1β(IL-1β),interleukin-6(IL-6),interferon-γ(INF-γ)and tumor necrosis factor-α(TNF-α)were higher in the study group compared with control group,with statistically significant differences(U=9.115,5.239,4.431,5.428,P<0.01).Conversely,the levels of anti-inflammatory cytokines interleukin-4(IL-4),interleukin-10(IL-10)and interleukin-13(IL-13)were lower in the study group compared with control group,with statistically significant differences(U=7.398,7.331,7.614,P<0.01).The retrospective test in Fisher discriminant function achieved a correct discrimination rate of 89.66%,and the cross validation achieved a correct discrimination rate of 88.67%.Conclusion The Fisher discriminant function developed in this study may serve as a valuable auxiliary method in the diagnosis of depressive disorder.

Objective:To investigate the reference ranges for thyroid function and its influencing factors in preterm infants at 14 d after birth.Methods:This retrospective study involved 514 preterm infants who met the inclusion criteria in Affiliated Hospital of Inner Mongolia Medical University from January 1, 2019 to December 31, 2021. They were divided into three group according to their gestational age [early premature group (26-31 +6 weeks, n=153), middle premature group (32-33 +6 weeks, n=129) and late premature group (34-36 +6 weeks, n=232)] or birth weight (BW) [<1 500 g group ( n=129), 1 500-2 000 g group ( n=120) and ≥2 000 g group ( n=265)]. Venous blood samples were collected from the infants at 14 d after birth and their thyroid function was determined by chemiluminescence immunoassay. The reference values of free triiodothyronine (FT 3), free thyroxine (FT 4) and thyroid stimulating hormone (TSH) were calculated based on the values of 95% confidence intervals ( CI) and expressed as percentiles in the range from P2.5 to P97.5. Mann-Whitney U test or Kruskal-Wallis H test was used to compare those thyroid hormone levels between groups. Spearman correlation analysis was used to study the correlation of gestational age or birth weight with FT 3, FT 4 and TSH levels. The factors influencing the levels of thyroid hormones were analyzed by multiple linear regression. Results:The reference ranges for FT 3, FT 4 and TSH were 1.53-3.72 pg/ml, 0.81-1.91 ng/dl and 1.32-7.80 μIU/ml in the early premature infants, 1.74-4.16 pg/ml, 0.90-2.82 ng/dl and 0.63-7.64 μIU/ml in middle prematures and 2.07-4.88 pg/ml, 1.09-2.27 ng/dl and 1.14-7.06 μIU/ml in late prematures. The reference ranges for the above three indexes were 1.53-4.06 pg/ml, 0.81-1.83 ng/dl and 1.14-7.84 μIU/ml in premature infants with BW<1 500 g, 1.67-3.98 pg/ml, 0.88-2.97 ng/dl and 0.94-7.64 μIU/ml in those whose BW between 1 500 g and 2 000 g and 1.91-4.75 pg/ml, 1.09-2.31 ng/dl and 1.14-6.32 μIU/ml in those whose BW≥2 000 g. Multiple linear regression showed that the level of FT 3 was positively correlated with gestational age ( β=0.119, P<0.05) and birth weight ( β=1.950×10 －4, P<0.05); that of FT 4 was positively correlated with gestational age only ( β=0.031, P<0.05); and TSH level was negatively correlated with birth weight ( β=－4.250×10 －4, P<0.05). Conclusions:Gestational age and birth weight are the factors influencing thyroid function in preterm infants at 14 d after birth. Evaluation of thyroid function with FT 4 and TSH should based on the references ranges of different gestational age and birth weight .

Objective:To investigate the inhibitory effect and molecular mechanism of microRNA-30d (miR-30d) in the process of proliferation, migration and invasion of malignant mesothelioma cell line MSTO-211H.Methods:In April 2017, the human MSTO-211H cells was used to establish miR-30d overexpressed MSTO-211H cell model by transfection of miR-30d mimics. The qRT-PCR was performed to detect the expression level of miR-30d in the cells transfected miR-30d mimics. The effects of miR-30d on the proliferation, apoptosis, migration and invasion of MSTO-211H cells were analyzed by CCK-8 experiment, flow cytometry, cell scratch experiment and Transwell method.Results:After transfection of miR-30d, the expression level of miR-30d in the MSTO-211H+miR-30d cells group was significantly higher than MSTO-211H+miR NC cells group ( P<0.01) . The cell activity of MSTO-211H+miR-30d group (105.13%±2.35%) was significantly lower than MSTO-211H+miR NC cells group (115.40%±1.35%) , and the level of apoptosis (3.97%±0.36%) was significantly higher than MSTO-211H+miR NC cells group (1.47%±0.10%) ( P<0.01) . The relative migration areas at 12 and 24 h of MSTO-211H+miR-30d cells group (9.35±3.16 μm 2 and 58.19±1.82 μm 2) were significantly lower than MSTO-211H+miR NC cells group (54.42 ±5.26 μm 2 and 88.32 ±1.96 μm 2) ( P<0.01) . Compared with the MSTO-211H+miR NC cells group, the numbers of cell migration and cell invasion were reduced in the MSTO-211H+miR-30d cells group ( P<0.01) . Conclusion:miR-30d can regulate the progression of malignant pleural mesothelioma by inhibiting the proliferation, apoptosis, migration and invasion of MSTO-211H cells.

Objective:To investigate the inhibitory effect and molecular mechanism of microRNA-30d (miR-30d) in the process of proliferation, migration and invasion of malignant mesothelioma cell line MSTO-211H.Methods:In April 2017, the human MSTO-211H cells was used to establish miR-30d overexpressed MSTO-211H cell model by transfection of miR-30d mimics. The qRT-PCR was performed to detect the expression level of miR-30d in the cells transfected miR-30d mimics. The effects of miR-30d on the proliferation, apoptosis, migration and invasion of MSTO-211H cells were analyzed by CCK-8 experiment, flow cytometry, cell scratch experiment and Transwell method.Results:After transfection of miR-30d, the expression level of miR-30d in the MSTO-211H+miR-30d cells group was significantly higher than MSTO-211H+miR NC cells group ( P<0.01) . The cell activity of MSTO-211H+miR-30d group (105.13%±2.35%) was significantly lower than MSTO-211H+miR NC cells group (115.40%±1.35%) , and the level of apoptosis (3.97%±0.36%) was significantly higher than MSTO-211H+miR NC cells group (1.47%±0.10%) ( P<0.01) . The relative migration areas at 12 and 24 h of MSTO-211H+miR-30d cells group (9.35±3.16 μm 2 and 58.19±1.82 μm 2) were significantly lower than MSTO-211H+miR NC cells group (54.42 ±5.26 μm 2 and 88.32 ±1.96 μm 2) ( P<0.01) . Compared with the MSTO-211H+miR NC cells group, the numbers of cell migration and cell invasion were reduced in the MSTO-211H+miR-30d cells group ( P<0.01) . Conclusion:miR-30d can regulate the progression of malignant pleural mesothelioma by inhibiting the proliferation, apoptosis, migration and invasion of MSTO-211H cells.

Objective:To explore the occupational stress status and influencing factors of workers in a textile factory in Zhejiang Provice.Methods:In October 2018, 505 workers from a textile factory in Zhejiang Province were selected as research objects by convenient sampling method. A total of 505 questionnaires were distributed, 495 of which were effective and the effective recovery rate was 98.0%. Job Content Questionnaire (JCQ) and Effort Reward Imbalance Questionnaire (REI) were used to investigate textile workers' occupational stress and analyze its influencing factors. The differences of the composition ratio of different groups were tested by χ 2 test. The influencing factors such as age, gender and occupation on occupational stress were analyzed by multivariate logistic regression. Results:ERI analysis results showed that the high and low occupational stress accounted for 30.1% and 69.9%, respectively. The differences of occupational stress among workers of different job types and working ages were statistically significant ( P<0.05) . The detection rates of high occupational stress of paper workers and spinners were 47.8% (11/23) and 44.8% (30/67) , respectively, higher than other jobs. The detection rate of high occupational stress for workers with more than 5 years of service was 46.4% (13/28) . The results of JCQ analysis showed that there was no statistical significance in the differences of daily working hours and length of service between different gender, education levels, types of work patterns, and occupational stress ( P>0.05) . Job types had significant effects on the occupational stress defined by ERI ( P<0.05) , the risk of occupational stress was 2.151 times than that of the coiler. Conclusion:There are significant differences in occupational stress risk among workers of different types of work in textile industry, so different measures should be taken to prevent and control occupational stress in different jobs.

Objective:To explore the occupational stress status and influencing factors of workers in a textile factory in Zhejiang Provice.Methods:In October 2018, 505 workers from a textile factory in Zhejiang Province were selected as research objects by convenient sampling method. A total of 505 questionnaires were distributed, 495 of which were effective and the effective recovery rate was 98.0%. Job Content Questionnaire (JCQ) and Effort Reward Imbalance Questionnaire (REI) were used to investigate textile workers' occupational stress and analyze its influencing factors. The differences of the composition ratio of different groups were tested by χ 2 test. The influencing factors such as age, gender and occupation on occupational stress were analyzed by multivariate logistic regression. Results:ERI analysis results showed that the high and low occupational stress accounted for 30.1% and 69.9%, respectively. The differences of occupational stress among workers of different job types and working ages were statistically significant ( P<0.05) . The detection rates of high occupational stress of paper workers and spinners were 47.8% (11/23) and 44.8% (30/67) , respectively, higher than other jobs. The detection rate of high occupational stress for workers with more than 5 years of service was 46.4% (13/28) . The results of JCQ analysis showed that there was no statistical significance in the differences of daily working hours and length of service between different gender, education levels, types of work patterns, and occupational stress ( P>0.05) . Job types had significant effects on the occupational stress defined by ERI ( P<0.05) , the risk of occupational stress was 2.151 times than that of the coiler. Conclusion:There are significant differences in occupational stress risk among workers of different types of work in textile industry, so different measures should be taken to prevent and control occupational stress in different jobs.

Objective:To investigate the reliability and validity of the Chinese Version of Dimensional Anhedonia Rating Scale (DARS).Methods:136 subjects who were diagnosed with depressive disorder and 30 healthy controls were selected to complete the Chinese version of DARS, Hamilton Depression Scale (HAMD 17), and Hospital Anxiety and Depression Scale (HADS). Cronbach’s alpha coefficient, test-retest reliability and confirmatory factor analysis were conducted. HADS and HAMD 17 were considered as the gold standard to investigate the criterion validity of the Chinese version of DARS. Results:The Cronbach’s α of the Chinese version of DARS was 0.97, the coefficient of the four domains ranged from 0.89 to 0.96. The intraclass correlation coefficient ( ICC) of test-retest reliability was 0.97， ICC of four domains ranged from 0.89 to 0.95 ( P<0.01)．The results of confirmation factor analysis of the Chinese version of DARS were as followed: χ 2/ df=2.02, GFI=0.88, RMSEA=0.08, CFI=0.96, and TLI=0.96. Validity: The total score and four domains of the Chinese version of DARS were significantly correlated with the seventh item of HAMD ( r=-0.38- -0.52, P<0.01) and all five items of HADS score ( r=-0.57- -0.75, P<0.01). There was significant difference between depression group and health control group. Conclusion:The Chinese version of DARS has good psychometric properties with adequate reliability and validity, and could be applied to assess the anhedonia of depression in China.

Objective:To investigate the reliability and validity of the Chinese Version of Dimensional Anhedonia Rating Scale (DARS).Methods:136 subjects who were diagnosed with depressive disorder and 30 healthy controls were selected to complete the Chinese version of DARS, Hamilton Depression Scale (HAMD 17), and Hospital Anxiety and Depression Scale (HADS). Cronbach’s alpha coefficient, test-retest reliability and confirmatory factor analysis were conducted. HADS and HAMD 17 were considered as the gold standard to investigate the criterion validity of the Chinese version of DARS. Results:The Cronbach’s α of the Chinese version of DARS was 0.97, the coefficient of the four domains ranged from 0.89 to 0.96. The intraclass correlation coefficient ( ICC) of test-retest reliability was 0.97， ICC of four domains ranged from 0.89 to 0.95 ( P<0.01)．The results of confirmation factor analysis of the Chinese version of DARS were as followed: χ 2/ df=2.02, GFI=0.88, RMSEA=0.08, CFI=0.96, and TLI=0.96. Validity: The total score and four domains of the Chinese version of DARS were significantly correlated with the seventh item of HAMD ( r=-0.38- -0.52, P<0.01) and all five items of HADS score ( r=-0.57- -0.75, P<0.01). There was significant difference between depression group and health control group. Conclusion:The Chinese version of DARS has good psychometric properties with adequate reliability and validity, and could be applied to assess the anhedonia of depression in China.