bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Toxic Effects of Lindane On Microcystis Aeruginosa And The Influence of pH And DOM Dependent Effects of Lindane On Microcystis Aeruginosa
Authors: Xiru Deng , Yingnan Jiang , Qiming Xian 
Published: August 2021

Abstract
The toxic effects of Lindane (γ-BHC) on Microcystis aeruginosa were studied under lab culture conditions. Total protein levels, as well as malondialdehyde (MDA) levels and superoxide dismutase (SOD) enzyme activity, in algal cells, were determined after exposure to different concentrations of Lindane. The bioaccumulation of Lindane, as well as the influence of pH and dissolved organic matter (DOM), on the toxic effects was also evaluated in algal cells. The growth of M. aeruginosa was inhibited by Lindane treatment (96 h), resulting in 50% of maximal effect (EC50) concentration of 442 μg/L. In addition the lowest observed effect concentration (LOEC) was found to be 120 μg/L, the no observed effect concentration (NOEC) 60 μg/L, and the maximum acceptable toxicant concentration (MATC) 85 μg/L. With increasing concentrations of Lindane and exposure time, M. aeruginosa growth was significantly inhibited; in addition, total protein levels and SOD activity significantly decreased. MDA concentration, however, showed an insignificant increase after 96 h. Lindane has the potential for bioaccumulation in algal cells with a bioconcentration factor (BCF) of 340. Furthermore, the toxic effects of Lindane on M. aeruginosa were influenced by environmental factors, such as pH and DOM. The toxic effects decreased with increasing pH and humic acid concentrations. Ultrastructure cell images were used to depict Lindane induced apoptosis.
IGF2BP2 Promotes Pancreatic Carcinoma Progression by Enhancing the Stability of B3GNT6 mRNA via m6A Methylation
Authors: Xue Xiaofeng , Cao Pei , Wu Yufan , Sun Ding , Zhang Weigang , Qiu Junyi , Tang Zuxiong , Qin Lei 
Published: August 2021

Abstract
BackgroundPancreatic carcinoma (PC) is a highly lethal cancer with an increasing mortality rate, its five-year survival rate is only approximately 4%. N6-methyladenosine (m6A) modification is the most common posttranscriptional modification of RNA. However, its role in PC remains unclear.MethodsWe combined bioinformatic analysis with in vitro and in vivo experiments to investigate the expression profile of methylation modulators and identify key m6A regulators in the progression of PC. Further study focused on exploring the target genes binding to the regulators through RIP and double fluorescence staining.ResultsTCGA and Gene Expression Omnibus (GEO) analyses revealed an overall increasing trend in the expression of m6A regulators in PC, and consensus clustering analysis of m6A showed that the expression of regulators was negatively correlated with the survival rate. LASSO-Cox regression analysis revealed that IGF2BP2, METTL3, ALKBH5 and KIAA1429 were associated with hazard ratios (HR), but only IGF2BP2 was sufficiently appropriate for the m6A survival prognosis model. The IHC and WB results verified high protein expression of IGF2BP2 in PC, and IGF2BP2 knockdown inhibited the proliferation and migration of PC cells. We predicted nine possible target mRNAs of IGF2BP2, and B3GNT6, which regulates three-dimensional serine or threonine structures to affect biosynthesis and metabolism, was verified via RIP and dual luciferase reporter assays to be observably methylated by IGF2BP2. In addition, IF staining confirmed the co-expression of IGF2BP2 and B3GNT6. The tumour-promoting effect of IGF2BP2 and its co-expression with B3GNT6 were verified in an animal model.Conclusions:Elevated m6A levels promote PC progression. IGF2BP2 is a credible marker and modulates B3GNT6 mRNA stability, indicating that IGF2BP2 is a potential prognostic marker and therapeutic target in PC progression.
Characterization and Genomic Analysis of an Efficient Dibutyl Phthalate-Degrading Bacterium Microbacterium sp. USTB-Y
Authors: Zhao ZhenZhen , Liu Chao , Xu Qianqian , Ahmad Shahbaz , Zhang Haiyang , Pang Yu , Aikemu Abudumukeyiti , Liu Yang , Yan Hai 
Published: August 2021

Abstract
A promising bacterial strain for biodegrading dibutyl phthalate (DBP) was successfully isolated from activated sludge and characterized as a potential novel Microbacterium sp. USTB-Y based on 16S rDNA sequence analysis and whole genome average nucleotide identity (ANI). Initial DBP of 50 mg/L could be completely removed by USTB-Y both in mineral salt medium and in DBP artificially contaminated soil within 12 h at the optimal culture conditions of pH 7.5 and 30℃, which indicates that USTB-Y has a strong ability in DBP biodegradation. Phthalic acid (PA) was identified as the end-product of DBP biodegraded by USTB-Y using GC/MS. The draft genome of USTB-Y was sequenced by Illumina NovaSeq, and 29 and 188 genes encoding for putative esterase/carboxylesterase and hydrolase/alpha/beta hydrolase were annotated based on NR (non redundant protein sequence database) analysis, respectively. Gene3781 and gene3780 from strain USTB-Y showed 100% identity with dpeH and mpeH from Microbacterium sp. PAE-1. But no phthalate catabolic gene (pht) cluster was found in the genome of strain USTB-Y. This information will be valuable for obtaining a more holistic understanding on diverse genetic mechanisms of PAEs-biodegrading Microbacterium sp. strains.
Estimation of The IMC Layer Thickness of Friction-Stir-Welded Aluminum/Copper Lap Joints By Using Temperature Simulation
Authors: Krutzlinger Markus , Kick Michael Karl , Kessler Manuel , Zaeh Michael Friedrich 
Published: August 2021

Abstract
Many studies demonstrated the suitability of Friction Stir Welding (FSW) for joining dissimilar materials. Especially the combination of aluminum and copper is of high interest for many applications. Intermetallic compounds (IMC) forming during FSW due to interdiffusion and the thickness of the IMC layers strongly influence the joint properties, e.g. the joint strength or the thermal and electrical conductivity. Therefore, it is important to predict the IMC layer thickness to tailor the joint properties to the individual application. For this purpose, a thermal-pseudo-mechanical model was built to simulate the temperature field during FSW of aluminum EN AW-1050 and copper CW008A in lap joint configuration. The simulated temperatures as well as the heat inputs corresponded well with experimental data for a wide range of parameter settings. In order to estimate the IMC layer thickness, the simulated temperatures close to the interface of the materials were used. Two approaches for calculating the layer thicknesses were compared. In the first approach, the thickness is calculated based on the peak temperature lasting for several seconds at the interfacial area. This approach was applied for constant feed rates, while the second approach also accounted for the cooling slope and could therefore be used for different feed rates.
Sweep Imaging with Fourier Transform as a Tool for Evaluating the Effect of Teriparatide on Cortical Bone Turnover in an Ovariectomized Rat Model
Authors: Yasutaka Sotozono , Ikoma Kazuya , Kido Masamitsu , Onishi Okihiro , Minami Masataka , Wada Hiroaki , Yamada Shunji , Matsuda Ken-ichi , Tanaka Masaki , Takahashi Kenji 
Published: August 2021

Abstract
Background: Teriparatide (TPTD) is a drug for osteoporosis that promotes bone formation and improves bone turnover. However, the specific effects of TPTD on cortical bone are not well understood. Sweep imaging with Fourier transform (SWIFT) has been reported as a useful tool for evaluating cortical bone, but it has yet to be used to investigate the effects of TPTD on cortical bone. This study aimed to evaluate the effects of TPTD on cortical bone turnover using SWIFT in rats. Methods: Twelve-week-old female Sprague-Dawley rats (n=36) were reared for 12 weeks after ovariectomy to create a postmenopausal osteoporosis model. They were divided into two groups: the TPTD and non-TPTD groups. Rats were euthanized at 4, 12, and 24 weeks after initiating TPTD treatment. Tibial bones were extracted and evaluated using magnetic resonance imaging (MRI) and bone histomorphometry. In MRI, proton density-weighted imaging (PDWI) and SWIFT imaging were performed. The signal-to-noise ratio (SNR) was calculated for each method. The same area evaluated by MRI was then used to calculate for the bone formation rate by bone histomorphometry . Measurements were compared using the Mann-Whitney U-test, and a P-value of <0.05 was considered significant. Results: PDWI-SNR was not significantly different between the two groups at any time point (P = 0.589, 0.394, and 0.394 at 4, 12, and 24 weeks, respectively). Contrarily, SWIFT-SNR was significantly higher in the TPTD group than in the non-TPTD group at 4 weeks after initiating treatment, but it was not significantly different at 12 and 24 weeks (P = 0.009, 0.937, and 0.818 at 4, 12, and 24 weeks, respectively). The bone formation rate was significantly higher in the TPTD group than in the non-TPTD group at all timepoints (P < 0.05, all weeks). In particular, at 4 weeks, the bone formation rate was markedly higher in the TPTD group than in the non-TPTD group (1.98±0.33 vs. 0.09±0.05 μm3/μm2/day).Conclusions: The marked increase of the bone formation rate in the cortical bone by TPTD could be measured using SWIFT. SWIFT could be an effective tool for evaluating the effects of TPTD on cortical bone turnover as images.
A Generalized Strain Approach to Anisotropic Elasticity
Authors: Shariff M.H.B.M. 
Published: August 2021

Abstract
This work proposes a generalized Lagrangian strain function fα (that depends on modified stretches) and a volumetric strain function gα (that depends on the determinant of the deformation tensor) to characterize isotropic/anisotropic strain energy functions. With the aid of a spectral approach, the single-variable strain functions enable the development of strain energy functions that are consistent with their infinitesimal counterparts, including the development of a strain energy function for the general anisotropic material that contains the general 4th order classical stiffness tensor. The generality of the single-variable strain functions sets a platform for future development of adequate specific forms of the isotropic/anisotropic strain energy function; future modellers only require to construct specific forms of the functions fα and gα to model their strain energy functions. The spectral invariants used in the constitutive equation have a clear physical interpretation, which is attractive, in aiding experiment design and the construction of specific forms of the strain energy. Some previous strain energy functions that appeared in the literature can be considered as special cases of the proposed generalized strain energy function. The resulting constitutive equations can be easily converted, to allow the mechanical influence of compressed fibres to be excluded or partial excluded and to model fibre dispersion in collagenous soft tissues. Implementation of the constitutive equations in Finite Element software is discussed. The suggested crude specific strain function forms are able to fit the theory well with experimental data and managed to predict several sets of experimental data.
Maternal Social Support and Determinants of Health Facility Delivery in Rural Ethiopia
Authors: Mamo Abebe , Abera Muluemebet , Abebe Lakew , Bergen Nicole , Asfaw Shifera , Bulcha Gebeyehu , Asefa Yisalemush , Erko Endale , Bedru Kunuz Haji , Lakew Mihiretu , Kurji Jaameeta , Kulkarni Manisha A. , Labonté Ronald , Birhanu Zewdie , Morankar Sudhakar 
Published: August 2021

Abstract
Background: Maternal mortality continues to decrease in the world but remains the most important health problems in low-income countries. Although evidence indicates that social support is important factor influencing health facility delivery, it has not been extensively studied in Ethiopia. Therefore, this study aimed to assess social support in influencing health facility childbirth in Ethiopia. Methods: A cross-sectional survey data on 3304 women aged 15–49 years from an Innovating for Maternal and Child Health in Africa project in three districts of Ethiopia, were analyzed, including data on social support and important factors. Using multivariate logistic regression, we examined the association between health facility birth, social support, and included variables. Adjusted odds ratios with 95% confidence intervals were used to identify statistically significant associations at 5% alpha level.Result: Overall, 46.9% of women delivered at health facility in their last pregnancy. Average travel time from closest health facility (AOR: 1.51, 95% CI 1.21 to 2.90), mean perception score of health facility use (AOR: 1.83, 95% CI 1.44 to 2.33), involvement in final decision to identify their place of childbirth (AOR: 2.12, 95% CI 1.73 to 2.58) had significantly higher odds of health facility childbirth. From social support variables, women who perceived there were family members and husband to help them during childbirth (AOR: 3.62, 95% CI 2.74 to 4.79), women who received continuous support (AOR: 1.97, 95% CI 1.20 to 3.23), women with companions for facility visits (AOR: 1.63, 95% CI 1.34 to 2.00) and women who received support from friends (AOR: 1.62, 95% CI 1.16 to 3.23) had significantly higher odds of health facility childbirth.Conclusions: Social support was critical to enhance health facility delivery, especially if women’s close ties help facility delivery. An intervention to increase facility delivery uptake should target not only the women’s general social supports, but also continuous support during childbirth from close ties including family members and close friends as these are influential in place of childbirth and also actions that increase women's healthcare decision could be effective in improving health facility delivery.
The triglyceride-glucose index played an important role in prognosis in critically ill patients with heart disease
Authors: Zhai Guangyao , Zhang Biyang , Wang Jianlong , Liu Yuyang , Zhou Yujie 
Published: August 2021

Abstract
Background

As an alternative method to evaluate insulin resistance (IR), triglyceride-glucose index (TyG) was shown to be related to the severity and prognosis of cardiovascular diseases. The main objective of this study was to explore the association between TyG and in-hospital mortality in critically ill patients with heart disease
Method:

TyG was calculated as previously reported: ln [fasting TGs (mg/dL) * FBG (mg/dL)/2]. All patients were divided into four different categories based on TyG quartiles. Primary outcome was in-hospital mortality. Binary logistic regression analysis was performed to determine the independent effect of TyG.
Result

4839 critically ill patients with heart disease were included. In-hospital mortality increased as TyG quartiles increased (Quartile 4 vs Quartile 1: 12.1 vs 5.3, P < 0.001). Even after adjusting for confounding variables, TyG was still independently associated with the increased risk of in-hospital mortality in critically ill patients with heart disease (Quartile 4 vs Quartile 1: OR, 95% CI: 2,43, 1.79–3.31, P < 0.001, P for trend < 0.001). However, we did not observe the association between increased TyG and the risk of mortality in patients with diabetes. Furthermore, as TyG quartiles increased, the length of intensive care unit (ICU) stay was prolonged (Quartile 4 vs Quartile 1: 2.3, 1.3–4.9 vs 2.1, 1.3–3.8, P = 0.007). And the significant interactions were not found in most subgroups.
Conclusion

TyG was independently correlated with in-hospital mortality in critically ill patients with heart disease.
Eating Behaviors Are Associated with Excessive Daytime Sleepiness among female adolescents
Authors: beigrezaei sara , Mazidi Mohsen , Ferns Gordon A , Ghayour-Mobarhan Majid , Shi Zumin , Khayyatzadeh Saeid 
Published: August 2021

Abstract
BackgroundExcessive daytime sleepiness (EDS) is a common sleep abnormality among adolescents, and it’s associated with increased risk of morbidity and mortality. We aimed to explore the relationships between eating behaviors and EDS among female adolscents.MethodsIn this cross-sectional study 988 Iranian adolescent girls aged between 12-18 years old were recruited. Presence of EDS was determined by the Epworth Sleepiness Scale, and eating behaviors was assessed by a pre-validated questionnaire. To investigate the association between dietary behaviors and the prevalence of EDS, we applied logistic regression analysis in crude and adjusted models (adjustments for age, physical activity, menstruation and second hand smoke and general obesity).ResultsThe prevalence of esccesive daytime sleepiness was obtained 24.3. The participants who consumed a major meal three times daily had a 0.56 lower odds for EDS compared to those who consumed a single major meal (OR: 0.46, 95% CI: 0.21- 0.91). Individuals with a ‘high-rate of food chewing’ were less likely to have EDS (OR: 0.55, 95% CI: 0.29 -1.04) compared with low and moderate rate of food chewing. Compared with those who consumed fried or spicy foods daily, individuals who never consumed fried (OR: 1.8, 95% CI: 0.55- 5.86) or spicy foods (OR: 1.71, 95% CI: 0.55- 5.29) had a greater risk for EDS. In addition, there were direct associations between lower meal regularity (OR: 0.53, 95% CI: 0.29- 0.95) and intra-meal fluid intake (OR: 3.00, 95% CI: 1.2- 7.3) with EDS in adjusted models. Neither in the crude nor in the adjusted models, were there significant associations between breakfast intake and frequency of snack consumption with EDS.Conclusion﻿The lowest frequency of main meal frequency, irregular meal consumption, breakfast skipping, low rate of food chewing, intra-meal fluid intake, and consumption of spicy and fried foods were associated with increased odds of EDS. Further prospective studies are required to confirm this finding.
Molecular characteristic of rifampin-sensitive and resistant isolates and characteristics of rpoB gene mutations in MRSA
Authors: Guo Yinjuan , Wang Bingjie , Rao Lulin , Wang Xinyi , Zhao Huilin , Li Meilan , Yu Fangyou 
Published: August 2021

Abstract
BackgroundMethicillin-resistant Staphylococcus aureus (MRSA) infections have become a leading cause of bacterial infections in both healthcare and community settings. Mutations in the rpoB gene cause resistance to rifampin (RIF R ), a critical antibiotic for treatment of multidrug-resistant S. aureus . The aim of this study was to detect the molecular characteristics of RIF R MRSA and analysis the rpoB gene mutations involved in RIF resistance. MethodsA total of 49 RIF R MRSA and 38 RIF S MRSA isolates collected from seven cities in China were analyzed by multilocus sequence typing, staphylococcus chromosomal cassette mec (SCC mec ) typing, spa typing, and rpoB gene mutations. ResultsST239-III-t030 (35/49, 71.4%), the major clone in RIF R MRSA isolates; ST45-IV-t116 (16/38, 42.1%), the major clone in RIF S MRSA isolates with rpoB mutations. RIF R MRSA isolates were resistance to erythromycin, ciprofloxacin, tetracycline, gentamicin, and clindamycin. By contrast, RIF S MRSA isolates with rpoB mutation were more susceptible to ciprofloxacin, tetracycline, and gentamicin. Forty-three (87.8%) isolates present the mutational change H481N and L466S, conferring 128-512 μg/ml RIF resistance. The four isolates with RIF MIC > 1024 μg/ml had additional amino acid substitution: H481N, L466S, A473T (n=2); H481Y (n=2), associated with a high-level RIF resistance. Of 38 RIF S MRSA isolates, two mutations were observed, including H481N (n=37) and A477D (n=1). ConclusionThe predominant RIF R MRSA clones in China were ST239III-t030. Molecular character, antibiotic resistant profiles, and rpoB mutations between RIF R MRSA and RIFS MRSA were diverse. Antibiotics for treating patients with MRSA infections can be selected based on molecular characteristics.
Analysis of Potential Hub Genes and Related Transcription Factors in Rosacea Patients using Bioinformatics Analysis
Authors: Wang Xin , Dong Wenfang , Wang Huan , You Jianjun , Zheng Ruobing , Xu Yihao , Fan Fei 
Published: August 2021

Abstract
Objective The aim of this study is to discover the adipocyte genes and pathways involved in rosacea using bioinformatics analysis.Methods The GSE65914 gene expression profile was obtained. The GEO2R tool was used to screen out differentially expressed genes (DEGs). It was further analyzed with Gene Ontology (GO) to explore functional annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) to explore cell signaling pathways. Protein-protein interaction (PPI) networks among the DEGs were found by STRING databases and visualized in Cytoscape software. The related transcription factors regulatory network of the DEGs were also constructed.Results A total of 254 DEGs, including 72 up-regulated genes and 182 down-regulated genes, were obtained in rosacea samples. The biological functions of DEGs are mainly involved in the inflammatory response and chemokine activity. A PPI network consisting of 217 nodes and 710 edges was constructed using STRING, and ten hub genes were identified with Cytoscape software. Some transcriptional factors were also found to interact with these hub DEGs.Conclusion In this study, we obtained ten hub genes, including CXCL8, CCR5, CXCR4, CXCL10, MMP9, CD2, CCL19, CXCL9, CCL5, CD3D, which play an essential role in the pathology of rosacea, and these genes may provide a basis for the screening of treatment biomarkers for rosacea in the future.
Teaching Medical Students to Choose Wisely Through Simulation
Authors: Morato Thayza Marcelly Rodrigues , Mendes Pedro Henrique Magalhães , Ghosn Danielle Saad Nemer Bou , Couto Thomaz Bittencourt , Mai Paulo Victor Ferreira , Farhat Sylvia Costa Lima , Schvartsman Claudio , Cavalcanti Nara Vasconcelos 
Published: August 2021

Abstract
The Choosing Wisely (CW) campaign aims to encourage dialog among physicians and patients about the costs and benefits of medical care. The purpose of the present study was to describe the implementation of the CW campaign among medical students in the pediatrics clerkship using different teaching strategies and to evaluate the students’ perception and performance. A prospective, interventionist, open study with a control group was conducted. All sixth-year undergraduate medical students that were on their pediatric clerkship at the Emergency Department during the study period were invited to participate. The study consisted of two strategies: a remote video class about the CW initiative and in situ simulation training. By the end of the rotation, all participants were evaluated through an Objective Structured Clinical Examination (OSCE). A total of 50 students were included, of which 24 watched only the online video (control group) and 26 were exposed to both the online video and the simulation scenarios (intervention group). Students in the intervention group had a statistically significant higher total score in the OSCE compared to students in the control group (median 90 vs 90; range 78-100 vs 50-100; p: 0.047). Median scores of behavioral items of the OSCE grouped together were statistically significant higher in the intervention group compared to the control group (median 60 vs 50; range 40-60 vs 20-60; p: 0.002).Conclusion: Simulation training about principles of the CW campaign had a greater impact on behavioral aspects of undergraduate students. This learning strategy was well accepted by participants.