Objective To explore the moderating and mediating roles of psychological capital in the associations of effort?reward imbalance and overcommitment with job burnout among iron?steel workers. Methods Totally 1 700 male iron?steel workers from an iron and steel company were enrolled for the study. A set of questionnaires that included demographic and working factors,the Maslach Burnout Inventory?General Survey,the Ef?fort?reward Imbalance Scale and the Psychological Capital Questionnaire,as well as perceived work environment was distributed to the subjects. A to?tal of 1 254 effective respondents(73.76%)were collected. Hierarchical linear regression analysis was performed to explore moderating role,and as?ymptotic and resampling strategies were used to detect mediating role. Results There was no moderating role of psychological capital on the associa?tion between effort?reward imbalance and job burnout. Psychological capital had significant and positive moderating roles on the associations of over?commitment with emotional exhaustion and cynicism. Psychological capital showed significant mediating role in the associations of effort?reward im?balance with emotional exhaustion and cynicism,and the proportion of mediating role was 5.84%and 18.75%,respectively. Conclusion In work?ers with high level of psychological capital,emotional exhaustion and cynicism would be significantly increased with overcommitment,and there is a weak increasing trend of emotional exhaustion and cynicism in workers with low level of psychological capital. Effort?reward imbalance could lead to emotional exhaustion and cynicism through the reduction of psychological capital of iron?steel workers.

Objective To evaluate the diagnostic accuracy of CMS50F for screening in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). Methods Sixty-four volunteers with suspected OSAHS underwent simultaneous noc?turnal polysomnography (PSG), micromovement sensitive mattress sleep monitoring system(MSMSMS)and CMS50F. The ap?nea-hypopnea index (AHI) detected by PSG and MSMSMS was used as the diagnostic standard for OSAHS. The reliability of CMS50F for monitoring sleep was assessed. Results There was no statistic difference in CMS50F-ODI3 and PSG-AHI be?tween normal, mild and moderate OSAHS groups(P>0.05). The CMS50F-ODI3 was smaller than the PSG-AHI in severe OSAHS patients(P < 0.05). There was a positive correlation between CMS50F-ODI3 and PSG-AHI(r=0.855, P < 0.05). PSG-AHI≥5 events per hour was used as the threshold value to diagnose OSAHS, the sensitivity and specificity of CMS50F were 94.5%and 88.9%. There were no significant differences in CMS50F-ODI3 and MSMSMS-AHI between normal, mild and moderate OSAHS patients(P>0.05). The value of CMS50F-ODI3 was smaller than MSMSMS-AHI in severe OSAHS patients (P < 0.05). There was also a significant correlation between CMS50F- ODI3 and MSMSMS-AHI (r=0.867,P <0.05). MSMSMS-AHI≥5 events per hour was used as the threshold value to diagnose OSAHS, the sensitivity and specificity of CMS50F were 94.5%and 88.9%. Conclusion CMS50F can be used as a portable and reliable device for screening of pa?tients suspected OSAHS.

Aimed at developing new formulation, amorphous solid dispersion of itraconazole was prepared via hot-melt extrusion technology and compared with sporanox for improving its dissolution. According to the solubility parameter and glass transition temperature, Soluplus, Kollidon VA64, HPMCAS and Eudragit EPO were used as carriers. After screening the carriers by modulated temperature-differential scanning calorimetry(MT-DSC), the amorphous solid dispersion was prepared successfully and characterized by MT-DSC, polarized light microscope(PLM), X-ray powder diffraction(XRPD)and Fourier Transform InfraRed(FT-IR). Results suggested that the amorphous form of ITZ solid dispersion and whether the interaction between polymer and ITZ was appeared. Using 30% and 50% drug loading, solid dispersion were tested by in vitro dissolution and kinetic solubility tests. When using Soluplus(3 ∶7)as carrier and extrusion temperature of 170 ℃, dissolution rate of itraconazole was improved significantly compared to Sporanox. In 40 ℃, 75% RH condition, itraconazole in the solid dispersion was amorphous for 30 d with no crystal observed. MT-DSC indicated the molecular level miscibility between Soluplus and amorphous itraconazole was probably the main cause of solubilization. The result from this research help understanding the solublization of amorphous itraconazole and future formulation development.

Objective: To analyze the prevalence of comorbidity of spinal curvature abnormality and malnutrition among primary and secondary school students aged 10-18 years in Tianjin in 2023, so as to provide scientific basis for the combined prevention of common diseases and multiple diseases among students and the construction of school health system. Methods: In September to October 2023, 31 884 primary and secondary school students aged 10 to 18 years in Tianjin were selected using stratified cluster random sampling. Abnormal spinal curvature in children and adolescents was assessed by Sereening of Spinal Curvature Abnormality of Children and Adolescents, while stunting, wasting, overweight, and obesity were determined according to the Screening for Malnutrition among Schoolage Children and Adolescents and Screening for Overweight and Obesity among Schoolage Children and Adolescents. The χ2 test was used to compare betweengroup differences in coprevalence, and multiple Logistic regression models were used to analyze the risk of different comorbidity types in different clusters. Results: The coprevalence of spinal curvature abnormality and malnutrition among primary and secondary school students in Tianjin was 1.6%, which was higher for girls than boys (1.8%, 1.4%), higher (2.5%) for senior high schools than for junior high schools and elementary schools (2.0%, 0.5%), and higher in rural than in urban areas (2.1%, 1.1%) (χ2=9.45, 141.92, 46.94, P<0.05). Multiple Logistic regression models showed that junior high school girls had a higher risk of incorrect posture comorbid with stunting and wasting (OR=4.52, 95%CI=1.84-11.06) and incorrect posture comorbid with overweight and obesity (OR=2.67, 95%CI=1.74-4.10) than boys, and that scoliosis/sagittal spinal abnormality comorbid with stunting and wasting (OR=0.10, 95%CI=0.02-0.44) risk was lower than that of boys, senior high school girls had a lower risk of scoliosis/sagittal spinal abnormality comorbid with overweight and obesity (OR=0.27, 95%CI=0.11-0.66) (P<0.05). Conclusions The coprevalence of spinal curvature abnormality and malnutrition is specific among primary and secondary school students in Tianjin, and the comorbidity type varies by gender and education stage. There is a need to increase prevention and control of spinal curvature abnormalities in school health working, intensive screening of key populations, and timely intervention.

Objective: To analyze the hotspots, frontiers, and future research trends related to puberty development among children and adolescents from 2013 to 2022, and to provide a reference for subsequent research related to puberty development. Methods: Data related to puberty development from 2013 to 2022 were retrieved from the Web of Science core collection with the search formula "puberty timing (title) OR puberty development (title) OR pubertal timing (title) OR pubertal development (title) OR puberty timing (abstract) OR puberty development (abstract) OR pubertal timing (abstract) OR pubertal development (abstract)". The CiteSpace was used for visual analysis. Results: A total of 6 684 publications were obtained and an upward trend could be seen in the number of publications in the field of puberty development in the last 10 years. Researchers with a high number of publications were Juul Anders, Brix Nis, and Ernst Andreas, in addition, the United States had the highest number of publications ( 2 125 ) and the highest betweenness centrality (0.23) in this field. In the last decade, research hotspots had focused on the timing of pubertal initiation, biological mechanisms of pubertal development, and sex differences in pubertal development. Research on environmental endocrine disruptors and the mechanisms of pubertal development were at the forefront of research and future research trends. Conclusion Scholars can refer to the research hotspots and research trends in this field and focus on the issues related to environmental endocrine disruptors and pubertal development mechanisms.

Objective:To explore the clinical profile and prognostic features of relapsing polychondritis (RP) with nervous system involvement.Methods:The clinical data of 28 RP patients with nervous system involvement admitted to Peking Union Medical College Hospital from December 2005 to November 2019 were collected and analyzed.Results:The median age of the patients was 50 years and 57.1% (16/28) were men. Patients with central nervous system involvement accounted for 92.9% (26/28) of the total. Common manifestations included headache (69.2%, 18/26), cognitive impairment (38.5%, 10/26), and mental disorders (38.5%, 10/26); only two cases had peripheral nervous system damage. Brain magnetic resonance imaging revealed that subcortical (13/18) and cortical (8/18) tissues were most affected. Cerebrospinal fluid tests showed that the median white blood cell count was 55×10 6/L, while the protein level was also slighted elevated ((0.54±0.17) g/L). All patients were treated with glucocorticoids, and 85.7% (24/28) of patients with immunosuppressants; 27 patients showed optimistic responses to the treatment, while 24 had recurrent courses. Cognitive dysfunction was the most common residual symptom. Follow-up data of 16 patients were available with an average follow-up time of 3.3 years. Ten of the patients were in stable condition and three patients died. Conclusions:Nervous system damage, especially limbic encephalitis and meningitis may present in course of RP. However, it is a challenge to diagnose for the non-specific clinical manifestations. Treatment with corticosteroids and immunosuppressants can lead to a favorable response.

Objective:To explore the feasibility and advantages of planned initiation of extracorporeal membrane oxygenation(ECMO)prior to liver transplantation.Methods:From November 2017 to July 2021, clinical data were retrospectively reviewed for 3 liver transplantation recipients assisted by ECMO.There were such preoperative symptoms of right ventricular dysfunction as fatigue, chest tightness and palpitations.In the first case, right heart catheterization was not performed due to patient refusal; another two patients were screened by transthoracic Doppler echocardiography(TDE)and diagnosed through right heart catheterization as portopulmonary hypertension(POPH)and pulmonary hypertension.Results:Three recipients with pulmonary hypertension received catheterization in right femoral artery and vein.After freeing of diseased liver and before blocking inferior vena cava, V-A ECMO support was performed.The dose of heparin was adjusted according to activated clotting time(ACT)and perioperative vital signs remained stable.They were ventilated for 54, 12 and 62 hours and supported by ECMO for 27, 61 and 14 hours.All were smoothly discharged.During a mean follow-up period of 26(9-22)months, liver functions were normal.Conclusions:Patients with end-stage liver disease with pulmonary hypertension should undergo routine TDE examinations during waiting period before liver transplantation.Those with pulmonary hypertension should undergo further right heart catheterization to confirm the diagnosis and severity of the disease.Planned application of ECMO through multidisciplinary consultations can expand surgical indications for liver transplantation, maintain intraoperative hemodynamic stability and facilitate smooth liver transplantation and postoperative patient recovery.

Diabetic peripheral neuropathy is a common diabetic complication.Presently,our understanding of its pathogenesis is incomplete,and there are no effective treatment options.In-depth research requires the use of animal experiments.The criteria for modeling success and the evaluation method for peripheral nerve function recovery are critical for carrying out animal experiments into type 2 diabetic peripheral neuropathy.However,but there has been a lack of systematic interrogation and analysis of the evaluation method used with type 2 diabetic peripheral neuropathy models.Therefore,the author reviewed the recent data,summarized and analyzed the evaluation method used for animal models of type 2 diabetic peripheral neuropathy of small and large nerve fibers,and proposed future directions for development,providing a reference for related research.

Objective:To investigate the correlation between immune function and age-related pulmonary fibrosis, as well as the potential impact of bacterial lysates on this condition.Methods:Twenty-four healthy male C57BL/6 mice, aged 24, were randomly divided into three groups: a control group(Group N), a pulmonary fibrosis group(Group M), and a pulmonary fibrosis+ bacterial lysis product intervention group(Group P). Mice in Groups M and P were intratracheally injected with bleomycin(5 mg/kg)to induce a mouse pulmonary fibrosis model, while mice in Group N were injected with saline.After modeling, mice in Group P were orally administered 0.4 ml of a bacterial lysis product once a day.After 28 days, lung tissue and blood samples were collected for analysis.Pathological changes in lung tissue were assessed using hematoxylin and tosin staining(HE)and Masson staining and the Ashcroft score.The expression of CD4+ and CD8+ in lung tissue was evaluated using immunohistochemistry.The levels of serum interferon-γ(INF-γ), interleukin-3(IL-13), and immunoglobulin A(IgA)protein were measured using Enzyme-linked Immuno Sorbent Assay(ELISA). The levels of INF-γ and IL-13 mRNA in lung tissue were determined using Real-Time Quantitative Transcription PCR(RT-qPCR). Additionally, the protein expression levels of matrix metalloprotein-9(MMP-9)and tissue inhibitor of metalloproteincise 1(TIMP-1)in lung tissue were assessed using blot analysis.Results:The degree of lung fibrosis was significantly reduced in mice in group P compared with group M when treated with bacterial lysis products.Group M showed a significant decrease in the expression of CD4+ T cells and an increase in the expression of CD8+ T cells( P<0.05)compared to group N. Additionally, the content of IgA was decreased( P<0.05)in group M. On the other hand, group P showed a significant increase in the expression of CD4+ T cells and a decrease in the expression of CD8+ T cells( P<0.05)compared to group M. Furthermore, the content of IgA was elevated( P<0.05)in group P. After bacterial lysis product intervention, mRNA and protein expression levels of IFN-γ were elevated( P<0.05), while mRNA and protein expression levels of IL-13 were reduced( P<0.05). Moreover, protein expression of MMP-9 and TIMP-1 was significantly up-regulated in group M compared with group N( P<0.05), and decreased after bacterial lysis product intervention( P<0.05). Conclusions:It is well-known that immune mechanisms play a crucial role in the development of pulmonary fibrosis.The use of bacterial lysates has been found to effectively regulate immune balance and mitigate the severity of pulmonary fibrosis in elderly mice.