Effect of psychological capital and social support on job satisfaction among workers in a natural gas field / 中国职业医学

@#To explore the effects of psychological capital social support and their interaction on job satisfaction in Methods natural gas field workers. A total of 1 473 workers from a natural gas field were selected as the research subjects ， using convenient sampling method. Job Satisfaction Questionnaire Psychological Capital Questionnaire and Social Support ， Results Scale were used to investigate the scores of job satisfaction psychological capital and social support level. The ， ， detection rates of job satisfaction psychological capital and social support in the high level group were 55.9% 52.5% and ， 48.1% respectively. The detection rates of job satisfaction of workers in the high level psychological capital group and high level （ social support group were higher than those in the low level psychological capital group and low level social support group 67.4% vs ， vs ， P ） 43.3% 71.9% 41.2% all <0.01 . The results of multivariate logistic regression analysis showed that psychological capital ［ （CI） （ - ） and social support had positive effects on job satisfaction odds ratio and 95% confidence interval were 1.58 1.17 2.41 （ - ）， ， P ］ ， and 2.53 1.82 3.52 respectively all <0.01 . Moreover the psychological capital and social support had additive effect on ［ CI （ - ）， CI job satisfaction relative excess risk of interaction and 95% was 3.07 1.02 5.12 attributable proportion and 95% was （ - ）， CI （ - ）］， 0.48 0.35 0.61 synergy index and 95% was 2.34 1.72 3.16 but there was no multiplication interaction between （P ）Conclusion psychological capital and social support >0.05 . Psychological capital and social support can positively affect job satisfaction of natural gas workers. There is an additive interaction between psychological capital and social support on job ， satisfaction but no multiplicative interaction is found. Keywords: ； ； ； ； ； Psychological capital Social support Job satisfaction Interaction Natural gas Worker

The value of oxygen index and base excess in predicting the outcome of neonatal acute respiratory distress syndrome

Abstract Objective This study aimed to identify the predictors and threshold of failure in neonatal acute respiratory distress syndrome. Methods Newborns with severe acute respiratory distress syndrome aged 0-28 days and gestational age ≥36 weeks were included in the study if their cases were managed with non-extra corporal membrane oxygenation treatments. Patients were divided into two groups according to whether they died before discharge. Predictors of non-extra corporal membrane oxygenation treatment failure were sought, and the threshold of predictors was calculated. Results A total of 103 patients were included in the study. A total of 77 (74.8%) survived hospitalization and were discharged, whereas 26 (25.2%) died. Receiver operating characteristic analysis of oxygen index, pH, base excess, and combinations of these indicators demonstrated the advantage of the combination of oxygen index and base excess over the others variables regarding their predictive ability. The area under the curve for the combination of oxygen index and base excess was 0.865. When the cut-off values of oxygen index and base excess were 30.0 and −7.4, respectively, the sensitivity and specificity for predicting death were 77.0% and 84.0%, respectively. The model with base excess added a net reclassification improvement of 0.090 to the model without base excess. Conclusion The combination of oxygen index and base excess can be used as a predictor of outcomes in neonates receiving non-extra corporal membrane oxygenation treatment for acute respiratory distress syndrome. In neonates with acute respiratory distress syndrome, if oxygen index >30 and base excess <−7.4, non-extra corporal membrane oxygenation therapy is likely to lead to death.

Differentiation of food protein-induced enterocolitis syndrome and necrotizing enterocolitis in neonates by abdominal sonography

Abstract Objectives: To summarize and differentiate abdominal ultrasound findings of necrotizing enterocolitis and food protein-induced enterocolitis syndrome. Methods: From January 2017 to December 2018, the abdominal ultrasound results of 304 cases diagnosed necrotizing enterocolitis or food protein-induced enterocolitis syndrome were retrospectively analyzed. The presence of pneumatosis intestinalis, portal venous gas, bowel wall thickening, intestinal motility, focal fluid collections and hypoechoic change of gallbladder wall were calculated, and the results were compared and analyzed. Results: Pneumatosis intestinalis, portal venous gas, bowel wall thickening, intestinal motility weakened/absent, focal fluid collections and hypoechoic change of gallbladder wall can be found in both necrotizing enterocolitis and food protein-induced enterocolitis syndrome infants. However, in infants with necrotizing enterocolitis, intestinal motility was weakened/absent in whole abdomen, and in food protein-induced enterocolitis syndrome, it only involved isolated segment of bowel. The positive rates of above signs in necrotizing enterocolitis infants were significantly higher than those in food protein-induced enterocolitis syndrome (p < 0.01). Moreover, it was observed that the rate of weakened intestinal motility besides the lesion segment of bowel in necrotizing enterocolitis infants was 100%, and in food protein-induced enterocolitis syndrome infants, it was 0%, which is supposed to be a main sign for identification. Conclusion: In the early stage, abdominal ultrasound can be used to differentiate necrotizing enterocolitis and food protein-induced enterocolitis syndrome.

Short Tandem Repeats in plants: genomic distribution and function prediction

BACKGROUND: Short Tandem repeats (STRs) existed as popular elements in both eukaryotic and prokaryotic genomes. RESULTS: In this study, we analyzed the characteristics, distributions, and motif features of STRs within whole-genomes of 140 plant species. The results showed that STR density was negatively correlated with the genome size. Hexanucleotide repeat was the most abundant type of STRs. The distribution of algae shows a preference different from that of other plants. By analyzing GC contents of STRs and genome, it was concluded that STR motif was influenced by GC contents. Analysis of the long STRs in genome (length 1000 bp) found that dicots have the more long STRs. For STR types, di- and tri-nucleotide accounted for the highest proportion. Analyzing and designing long STRs in CDS (length 500 bp) was to verify the role of long STRs in Gossypium hirsutum TM-1 and Solanum tuberosum. By comparing the long STRs found in Fragaria x ananassa with other species, some evolutionary characteristics of the long STRs were obtained. CONCLUSIONS: We got the characteristics, distribution, and motif features of STRs in the whole genome of 140 plants and obtained some evolutionary characteristics of long STRs. The study provides useful insights into STR preference, characteristics, and distribution in plants.

Comparison of different orthokeratology lenses in controlling the progression of low myopia in children / 中国学校卫生

Objective@#To compare the effect of different orthokeratology lenses in controlling the progression of low myopia in children, and to provide a reference for exploring effective prevention measures for eyesight of children.@*Methods@#A total of 175 cases (350 eyes) aged 8-12 years old who were fitted with orthokeratology lenses were collected in this retrospective study. The differences in the changes of the axis length (AL) and the spherical equivalent refraction (SER) were analyzed after wearing different orthokeratology lenses for one year, and the relationship between the change of AL, SER and gender, age was also analyzed.@*Results@#In the Mouldway group, Alpha group, Lucid group and CRT group, the Median ( P 25 , P 75 ) of AL changes were 0.23 ( 0.12 , 0.41), 0.30 (0.17, 0.45), 0.35 (0.16, 0.41) and 0.33 (0.23, 0.41)mm, and there were no statistical significant difference between four groups ( Z =7.70, P >0.05); The Median ( P 25 , P 75 ) of SER changes were -0.31 (-1.00, 0.28), -0.38 ( -1.22 , 0.13), -0.25 (-0.84, 0.13) and -0.63 (-1.13, 0.25)D, and there were no statistical significant difference between four groups ( Z =2.15, P >0.05). The age had negative correlation with the change of AL ( r =-0.26, P <0.05), but has nothing to do with the change of SER ( r =0.10, P >0.05). There was no statistically significant difference in the change of AL ( Z =2.25, P > 0.05 ) and SER ( Z =-1.50, P >0.05) among children of different genders.@*Conclusion@#Different orthokeratology lenses have no differences in controlling the growth of the AL and changing the SER.

Screening chronic periodontitis-related genes using whole-genome expression profiling / 中国组织工程研究

BACKGROUND: Whole-genome expression profiling is a technical method for gene expression research, with high sensitivity and specificity. This technique can be used to detect differential genes related to chronic periodontitis in the whole genome, therefore efficiently and quickly finding chronic periodontitis-related factors. OBJECTIVE: To screen genes related to chronic periodontitis by using the whole-genome expression profiling. METHODS: Normal periodontal ligament tissue of 15 patients with orthodontic extraction was selected as control group, and periodontal tissue of 21 patients with chronic periodontitis was selected as experimental group. To screen up-regulated and down-regulated genes. the genome-wide expression profile chips of four chronic periodontitis tissues and four healthy tissues were compared. The expression of the differential gene PI3K-Akt signal pathway was verified by real-time PCR (7 normal cases and 13 cases of chronic periodontitis) and western blot (4 normal cases and 4 cases of chronic periodontitis). The experimental protocol was approved by the Ethics Committee of the First Affiliated Hospital of Hainan Medical University (approval No. HNM20180034) and informed consent was obtained from each patient. RESULTS AND CONCLUSION: Analysis of the whole genome expression profile chip revealed that 1 565 up-regulated genes and 1 849 down-regulated genes were significantly differentially expressed in chronic periodontitis samples. The enrichment analysis revealed that the expression of PI3K-Akt signaling pathway was significantly different in chronic periodontitis (P < 0.001). Real-time PCR and western blot assay results indicated that PI3K and Akt expression was higher in the experimental group than in the control group (P < 0.05). All the findings indicate that the genome-wide expression profile chip is fast and highly sensitive to screen the changes in chronic periodontitis-related genes. Significantly differential expression of PI3K-Akt signal pathway in chronic periodontitis provides an experimental basis for the treatment of chronic periodontitis.

Effect of simulated geomagnetic activity on myocardial ischemia/reperfusion injury in rats

Abstract Objective: To study the response of myocardial ischemia/reperfusion injury (MI/RI) in rats to simulated geomagnetic activity. Methods: In a simulated strong geomagnetic outbreak, the MI/RI rat models were radiated, and their area of myocardial infarction, hemodynamic parameters, creatine kinase (CK), lactate dehydrogenase (LDH), melatonin, and troponin I values were measured after a 24-hour intervention. Results: Our analysis indicates that the concentrations of troponin I in the geomagnetic shielding+operation group were lower than in the radiation+operation group (P<0.05), the concentrations of melatonin in the shielding+operation group and normal+operation group were higher than in the radiation + operation group (P<0.01), and the concentrations of CK in the shielding + operation group were lower than in the radiation + operation group and normal + operation group (P<0.05). Left ventricular developed pressure (LVDP) and ± dP/dtmax in the radiation+operation group were lower than in the shielding + operation group and normal+operation group (P<0.01). Left ventricular end-diastolic pressure (LEVDP) in the shielding + operation group was higher than in the normal + operation group (P<0.05). There was no significant difference in area of myocardial infarction and LDH between the shielding + operation group and the radiation + operation group. Conclusion: Our data suggest that geomagnetic activity is important in regulating myocardial reperfusion injury. The geomagnetic shielding has a protective effect on myocardial injury, and the geomagnetic radiation is a risk factor for aggravating the cardiovascular and cerebrovascular diseases.

Polymorphism of the complement 5 gene is associated with large artery atherosclerosis stroke in Chinese patients / O polimorfismo do gene C5 do complemento está associado a acidentes vasculares cerebrais de grandes artérias com aterosclerose em pacientes chineses

ABSTRACT The complement system has been confirmed to play an increasingly important role in ischemic stroke (IS). This study aimed to determine whether the single-nucleotide polymorphism of the complement 5 (C5) gene independently influences the occurrence, severity, and long-term outcome of IS in Chinese patients. Methods C5 rs17611 genetic variants were investigated in 494 IS patients and 330 control individuals .Ischemic stroke was classified into subtypes and patients were assessed 90 days post-stroke with the modified Rankin Scale to determine stroke outcome. Results The presence of C5 polymorphism was associated with the incidence of large artery atherosclerosis (LAA)-subtype IS (n =2 00; p = 0.031), which even persisted after adjustment for covariates (OR = 1.518; 95%CI = 1.093–2.018; p = 0.013). However, no association was found between genotypes and the severity and outcome of stroke (p = 0.978; p = 0.296). Conclusions The C5 polymorphism might contribute to the risk of LAA-subtype IS independently of other known risk predictors.

RESUMO Já se confirmou que o sistema do complemento exerce um papel cada vez mais importante nos acidentes vasculares cerebrais isquêmicos. Este estudo teve o objetivo de determinar se o polimorfismo de nucleotídeo único (SNP) do gene codificador do componente 5 (C5) influencia de forma independente a ocorrência, a severidade e o desfecho em longo prazo do acidente vascular cerebral isquêmico (AVCI) em pacientes chineses. Métodos Variantes genéticas rs17611 do C5 foram investigadas em 494 pacientes com AVCI e em 330 indivíduos controles. O AVCI foi classificado em subtipos e os pacientes foram avaliados 90 dias após o acidente vascular, através da Escala Modificada de Rankin (mRS), para determinação do desfecho do acidente. Resultados A presença de polimorfismo do C5 foi associada à incidência de AVCI do subtipo com aterosclerose de grandes artérias (AGA) (n = 200; p = 0,031), que persistiu mesmo após os ajustes de covariáveis (RP = 1,518; 95% IC = 1,093–2,018; p = 0,013). Entretanto, nenhuma associação foi observada entre os genótipos e a severidade ou o desfecho do acidente vascular (p = 0,978; p = 0,296). Conclusões O polimorfismo do C5 pode contribuir para o risco de AVCI do tipo com AGA, independentemente de outros riscos preditores conhecidos.

Isolation and characteristics of lactic acid bacteria isolated from ripe mulberries in Taiwan

The objective of this study was to isolate, characterize, and identify lactic acid bacteria (LAB) from ripe mulberries collected in Taiwan. Ripe mulberry samples were collected at five mulberry farms, located in different counties of Taiwan. Eighty-eight acid-producing cultures were isolated from these samples, and isolates were divided into classes first by phenotype, then into groups by restriction fragment length polymorphism (RFLP) analysis and sequencing of 16S ribosomal DNA (rDNA). Phenotypic and biochemical characteristics led to identification of four bacterial groups (A to D). Weissella cibaria was the most abundant type of LAB distributed in four mulberry farms, and Lactobacillus plantarum was the most abundant LAB found in the remaining farm. Ten W. cibaria and one Lactococcus lactis subsp. lactis isolate produced bacteriocins against the indicator strain Lactobacillus sakei JCM 1157T. These results suggest that various LAB are distributed in ripe mulberries and W. cibaria was the most abundant LAB found in this study.