bluuebunny/crossref_metadata_2025_split huggingface dataset:
Interference of functional dual-tasks on gait in untrained people with Parkinson’s disease and healthy controls: cross-sectional study
Authors: Valenzuela Constanza San Martín , Dueñas-Moscardó Lirios , López-Pascual Juan , Serra-Añó Pilar , Miguel José Manuel Tomás 
Published: June 2020

Abstract
Background: In Parkinson’s disease (PD) population, performing secondary tasks while walking further deteriorates gait and restrict mobility in functional contexts of daily life. This study (1) analyzed the interference of functional cognitive and motor secondary task on untrained people with PD and (2) compared their walking with healthy subjects. Methods: Forty people with PD (aged 66.72 [7.5] years, Hoehn and Yahr stage I-II-III, on-medication) composed the PD group (PDG) and 43 participants (aged 66.60 [8.75] years) formed the group of healthy counterparts (HG). Gait was evaluated through spatiotemporal, kinematic and kinetic outcomes in five conditions: single task (ST) and visual, verbal, auditory and motor dual-task (DT).Results: The velocity, stride length, and braking force performance of both groups was statistically higher in the ST condition than in verbal, auditory and motor DT (p < .05), and inferior in double support time and midstance force (p < .05). The same pattern was observed when compared the ST and visual DT condition, where participants showed a significantly higher stride length, double support time and braking force in the ST (p < .05). In addition, the PDG exhibited a significant shorter double support time and midstance force, and showed a higher braking force in the visual DT than in the verbal DT (p < .05). Similarly, the PDG showed a wider stride in the visual DT than in the motor DT condition (p < .05). PDG participants had a significantly lower performance than the HG in all the variables analyzed except for the maximum hip extension in the stance phase (p > .05). Conclusions: In untrained participants with PD, verbal and motor secondary tasks affect gait significantly, while auditory and visual tasks interfere to a lesser extent. Untrained people with PD have a poorer gait performance than their healthy counterparts, but in different grades according to the analyzed variables. Trial registration: The data in this paper are part of a single-blind, randomized, controlled trial and correspond to the evaluations performed before a physical rehabilitation program, retrospectively registered with the number at clinicaltrial.gov NCT04038866.
Integration of proteome and transcriptome refines key molecular processes underlying oil production in Nannochloropsis oceanica
Authors: You Wuxin , Wei Li , Gong Yanhai , Hajjami Mohamed El , Xu Jian , Poetsch Ansgar 
Published: June 2020

Abstract
Background: Under nitrogen deficiency situation, Nannochloropsis spp. accumulate large amounts of lipid in the form of triacylglycerides (TAG). Several researches have studied the mechanism of this process from the perspective of transcriptome and metabolome, yet proteome analysis on this process is still sparse and lacking the analysis of the dynamic adaption to nitrogen deficiency. Here, proteomes for 03h, 06h, 12h, 24h, 48h and 10th day of nitrogen deplete and replete conditions were compared. New proteome results were integrated with existing transcriptome and other data. Results: Obtained results illuminated physiological adaptations not deduced from previous transcriptome data: (a) Abundance of proteins related to photosynthesis only slightly decreased in the first 48h, indicating that photosynthesis is still working efficiently, and protein amounts adjust gradually with reduction in chloroplast size. (b) Most proteins related to the TCA cycle were strongly upregulated after 48h under nitrogen deficiency, suggesting that respiration is enhanced after 48h and that TCA cycle efflux supports the carbon required for lipid synthesis. (c) Proteins related to lipid accumulation via the Kennedy pathway increased their abundance at 48h, synchronous with the previously reported diversification of fatty acids after 48h. Conclusions: This study adds a proteome perspective on the major pathways for TAG accumulation by Nannochloropsis due to absence of nitrogen: photosynthesis, membrane lipid conversion, protein degradation, TCA cycle. By integrating existing transcriptome and other data, our research provided for Nannochloropsis oceanica a multi-layered description of adaptation to nitrogen limitation and lipid accumulation. Cluster analysis of this integrated dataset allowed inference of post-transcriptional regulation events.
Neuroprotective Effects of Magnesium L-threonate in a Hypoxic Zebrafish Model
Authors: Kim Young Sung , Won Young Ju , Lim Byung Gun , Min Too Jae , Kim Yeon-Hwa , Lee Il-Ok 
Published: June 2020

Abstract
Background: Hypoxia inhibits the uptake of glutamate (a major neurotransmitter in the brain closely related to cognitive function) into brain cells, and the initial response of cells to cortical hypoxia depends on glutamate. Previous studies have suggested that magnesium may have protective effects against hypoxic injuries. In particular, magnesium L-threonate (MgT) may increase magnesium ion concentrations in the brain better than MgSO4 and improve cognitive function. Methods: We evaluated cell viability under hypoxic conditions in the MgT- and MgSO4-treated human SH-SY5Y neurons, in vivo behavior using the T-maze test following hypoxia in MgT-treated zebrafish, activity of brain mitochondrial dehydrogenase by 2,3,5-triphenyltetrazolium chloride (TTC) staining, and protein expression of the excitatory amino acid transporter (EAAT) 4 glutamate transporter by western blotting.Results: Among the groups treated with hypoxia, cell viability significantly increased when pre-treated with 1 or 10 mM MgT (p=0.009 and 0.026, respectively). Despite hypoxic insult, MgT-treated zebrafish showed preferences for the red compartment (p=0.025 for distance and p=0.007 for frequency of entries), suggesting memory preservation. TTC staining showed reduced cerebral infarction and preserved absorbance in the MgT-treated zebrafish brain after hypoxia (p=0.010 compared to the hypoxia group). In addition, western blot showed upregulation of EAAT4 protein in the MgT treated group.Conclusions: Pre-treatment with MgT attenuated cell death and cerebral infarction due to hypoxia and protected cognitive function in zebrafish. In addition, MgT appeared to modulate expression of the glutamate transporter, EAAT4.
Mortality at the Pediatric Emergency Unit of the Mohammed VI Teaching Hospital of Marrakech
Authors: Lahmini Widad , bourrous mounir 
Published: June 2020

Abstract
Background: The death of a child at the emergency ward is one of the most difficult problems that the clinicians of these wards have to deal with. In our country the published data concerning the causes and the factors related to pediatric mortality especially in the pediatric emergency wards is very rare. This study aimed to study the epidemiology of the pediatric mortality in the pediatric emergency department (PED), to determine its rate and identify its most frequent causes. Methods: It is a retrospective and descriptive study, over five years (1st january 2012 and 31st december 2016) including all children aged from 0 to 15 years old who died at the PED in the Mohamed VI Hospital in Marrakech. Results: During the period of the study a total of 172.691 patients presented to the PED, among which 628 died (pediatric mortality rate : 3.63%). The masculine gender was predominant (n=383) with a gender ratio of 1.59. Two-thirds of the patients died in the first 24 hours (n=421). The median of time from admission to death was around 12 hours. Majority of the deceased children (n=471, 75%) were from a low socioeconomic status. The most frequent cause of admissions for deceased patients in the PED was respiratory distress (n=296, 47%) followed by neurological disorders (n=70, 11%). Neonatal mortality (≤ 1 month of age) was predominant (n=472, 75.1%), followed by postnatal mortality (1 month to 1 year old) (n=73, 11.6%). The most frequent causes of pediatric mortality, whatever the age range, were dominated by neonatal pathologies (n=391, 62.3%), followed by infecious causes bronchopulmonary infections included (n=49, 7.7%), birth deformities (n=46, 7.3%) while traumas were merely at 0.9% (n=6). The most frequent causes of neonatal mortality were neonatal infections (n=152, 32.2%), prematurity (n=115, 24.4%), perinatal asphyxia (n=71,15%) and neonatal respiratory distress (n=57, 12.1%). Conclusion: Our data once again underline the crucial importance of prevention. This requires correct follow-up of the pregnancies, an adequate assistance of births, and perfecting healthcare provision to newborns in order to attain proper assistance.
Demonstrating the presence of Ehrlichia canis DNA from different tissues of dogs with suspected subclinical ehrlichiosis
Authors: Rodríguez-Alarcón Carlos Arturo , Beristain-Ruiz Diana M. , Olivares-Muñoz Angélica , Quezada-Casasola Andrés , Pérez-Casio Federico , Álvarez-Martínez Jesús A. , Tapia-Alanís Jane , Lira-Amaya José J. , Rivera-Barreno Ramón , Cera-Hurtado Orlando S. , Ibancovichi-Camarillo José A. , Soon-Gómez Luis , Adame-Gallegos Jaime Raul , Figueroa-Millán Julio V. 
Published: June 2020

Abstract
Background: Nowadays, Ehrlichia canis receives more attention because of its great morbidity and mortality in animals. Dogs in the subclinical and chronic phases can be asymptomatic, and serologic tests show cross-reactivity and fail to differentiate between current and past infections. Moreover, there could be low parasitaemia, and E. canis might be found only in target organs, hence negative by PCR in blood. Methods: We evaluated by PCR the prevalence of E. canis in blood, liver, spleen, lymphatic nodules, and bone marrow in 59 recently euthanized dogs that had ticks but were clinically healthy. Results: In total, 52.55% of the blood PCRs for E. canis were negative, yet 61.30% yield positive results in tissue biopsies as follows: 63.15% from bone marrow, 52.63% from liver, 47.36% from spleen and 15.78% from lymphatic nodules. In addition, 33% had infection in three tissues (spleen, liver and bone marrow). Conclusions: Our results show prevalence of E. canis in tissue from dogs that were negative by PCR in blood. E. canis DNA in tissue was 30% lower in dogs that tested negative in blood samples by PCR, compared to those that were positive. However, it must be taken into account that some dogs with negative results were positive for E. canis in others tissues.
Evaluation of the association between presenteeism and perceived availability of social support among hospital doctors in Zhejiang, China
Authors: Xi Xiaoyu , Lu Qianni , Lu Mengqing , Xu Ailin , Hu Hao , Ung Carolina Oi Lam 
Published: June 2020

Abstract
Background: This study investigated the association between presenteeism and the perceived availability of social support among hospital doctors in China. Methods: A questionnaire was administered by doctors randomly selected from 13 hospital in Hangzhou China using stratified sampling. Logit model was used for data analysis. Results: The overall response rate was 88.16%. Among hospital doctors, for each unit increase of the perceived availability of social support, the prevalence of presenteeism was decreased by 8.3% (OR=0.91, P=0.000). In particular, if the doctors perceived availability of appraisal support, belonging support and tangible support as sufficient, the act of presenteeism was reduced by 20.2% (OR=0.806, P=0.000) 20.4% (OR=0.803, P=0.000) and 21.0% (OR=0.799, P=0.000) respectively with statistical differences. Conclusion: In China, appraisal support, belonging support and tangible support, compared to other social support, had a stronger negative correlation with presenteeism among hospital doctors. The benefits of social support in alleviating doctors’ presenteeism warrant further investigation.
Effect of Physical Exercise in Bariatric Surgery Patients: Protocol of a Randomized Controlled Clinical Trial
Authors: Herrera Andrea , Tabach Andrea , Andaur Karen , Zamunér Antonio 
Published: June 2020

Abstract
Background: Bariatric surgery is an effective approach to weight loss and long-term comorbidity resolution. Although recommended in several guidelines, supervised exercise has not been systematically prescribed after bariatric surgery. The aim of this study is to determine the effects of two types of exercise, moderate-intensity continuous training (MICT) and high-intensity interval training (HIIT), on body composition, cardiopulmonary function and perceived quality of life in bariatric surgery patients.Methods: This randomized controlled clinical trial will include 75 adults of both sexes scheduled for bariatric surgery. They will be randomly assigned to one of three groups: 1) MICT, 2) HIIT, or 3) a control group. The intervention will occur 2 days a week for 4 months. Outcomes will be assessed at four points: 1) one week before surgery; 2) 21 days after surgery (baseline before the exercise program); 3) 8 weeks after beginning the exercise program; and 4) one week after the end of intervention. Primary outcomes will include body composition, heart rate variability, and six-minute walk test and quality of life scores. Secondary outcomes will be maximal respiratory pressure, flowmeter, hand dynamometry, and 30-second sit-to-stand test results.Discussion: Both exercise protocols in this study were developed according to evidence-based practice. It is expected that, after 16 weeks of intervention, body composition (measured by electrical bioimpedance), cardiopulmonary function (measured by heart rate variability, maximal inspiratory pressure, maximal expiratory pressure, peak expiratory flow, handgrip strength, and the six-minute walk test) and perceived quality of life (measured by the Moorehead-Ardelt quality of life questionnaire II and bariatric analysis and reporting outcome system scores) will improve, especially in the HIIT group.Trial registration: ClinicalTrials.gov, NCT04235842, registered 22 January 2020.
Enhanced Sensitivity of VEGF Detection Using Catalase-Mediated Chemiluminescence Immunoassay Based on CdTe QD/H2O2 System
Authors: Ghavamipour Fahimeh , Rahmani Hossein , Shanehsaz Maryam , Khajeh Khosro , Mirshahi Manouchehr , Sajedi Reza 
Published: June 2020

Abstract
Background: Since vascular endothelial growth factor (VEGF) is a major regulator of cancer angiogenesis, it is essential to develop a technology for its sensitive detection. Herein, we sensitized a chemiluminescence (CL) immunoassay through the combination of H 2 O 2 -sensitive TGA-CdTe quantum dot (QD) as signal transduction, dextran system as a cross-linker to prepare enzyme-labeled antigen and the ultrahigh bioactivity of catalase (CAT) as reporter enzyme. Results: Under the optimized experimental conditions, the CL-ELISA method can detect VEGF in the excellent linear range of 2–35000 pg mL -1 , with a detection limit (S/N = 3) of 0.5 pg mL -1 which was approximately 10 times lower than the commercial colorimetric immunoassay. This proposed method has been successfully applied to the clinical determination of VEGF in the human serum samples and the results illustrated the excellent correlation with the conventional ELISA method (R 2 = 0.997). The suitable recovery rate of the method in the serum ranged from 97% to 107%, with a relative standard deviation of 1.2% to 13.4%. Conclusions: The novel immunoassay proposes a highly sensitive, specific and stable method for very low levels detection of VEGF that can be used in primary diagnosis of tumor. With the well-designed sensing platform, this approach has a broad potential to be applied for quantitative analysis of numerous disease-related protein biomarkers for which antibodies are available.
Efficacy and Safety of Traditional Chinese Medicine in COVID-2019: A Study Protocol for an Open-Label, Multicenter Randomized Controlled Trial
Authors: Zeng Congcong , Yuan Zhengzhong , Pan Xiaoqiong , Zhang Jizhou , Zhu Jiahui , Zhou Fan , Shan Zhuocheng , Yuan Ye , Ye Ren , Cheng Jinguo 
Published: June 2020

Abstract
Introduction: The outbreak of a novel coronavirus (SARS-CoV-2) and associated COVID-19 disease in late December 2019 has led to a global pandemic. It directly leads to high morbidity and mortality, but also results in a devastating effect on the global economy. Unfortunately, there are no effective therapies or vaccines for it. Hence, we designed a randomized trial to evaluate the efficacy and safety of Traditional Chinese Medicine for treating patients with COVID-19.Methods and analysis: This is an open-label, multicenter randomized controlled clinical trial. One hundred and twelve patients infected by SARS-CoV-2 will be randomly assigned to the experimental or the control group in an equal ratio. The patients in control group will accept routine supportive clinically care including the therapies of anti-viral, anti-bacterial and ameliorating the related symptoms, while patients in the experimental group will be asked to take traditional Chinese medicine depending on the different stages of the disease for consecutive 14 days in addition to supportive care. All data will be gathered at baseline and on days 3, 7, 10 and 14. The primary outcome measures will be the time of Reverse Transcription PCR testing of respiratory tract sample turns to be negative. Secondary outcome measures will include Murray lung injury score, MuLBSTA score and TCM ( Traditional Chinese Medicine ) Syndrome Scoring System. A laboratory test will be taken before and after treatment to assess the safety of TCM.Discussion: The study may help to identify the the efficacy and safety of Traditional Chinese Medicine in treating COVID-2019.Trial registration: Chinese Clinical Trial Registry, ChiCTR2000030759.Registered on March 13th 2020-Retrospectively registered, http://www.chictr.org.cn/.
A Structural Analysis of the Hypoxia Response Network
Authors: li jianjie , Gao Yuqi 
Published: June 2020

Abstract
Background: The hypoxia-inducible factor-1 (HIF-1) signaling pathway is an important topic in high-altitude medicine. Network analysis is a novel method for integrating information on different aspects and levels of biological networks. However, this method has not been used in research on the HIF-1 signaling pathway network. To introduce this method into HIF-1-related research fields and verify its feasibility and effectiveness, we used a network analytical method to explore the structural attributes of the HIF-1 signaling pathway network.Methods: First, we analyzed the overall network of the HIF-1 signaling pathway using information retrieved from the Kyoto Encyclopedia of Genes and Genomes (KEGG). We performed topology analysis, centrality analysis, and subgroup analysis of the network. Then, we analyzed the core network based on the overall network analysis. We analyzed the properties of the topology, the bow-tie structure, and the structural complexity of the core network.Results: We obtained topological structure diagrams and quantitative indicators of the overall and core networks of the HIF-1 signaling pathway. For the structure diagrams, we generated topology diagrams of the network and the bow-tie structure of the core network. As quantitative indicators, we identified topology, centrality, subgroups, the bow-tie structure, and structural complexity. The topology indicators were the number of nodes, the number of lines, the network diameter, and the network density. The centrality indicators were the degree, closeness, and betweenness. The cohesive subgroup indicator was the components of the network. The bow-tie structure indicators included the core, input, and tendril-like structures. The structural complexity indicators included a power-law fitting model and its scale parameter.Conclusions: The core network could be extracted based on the subgroup analysis of the overall network of the HIF-1 signaling pathway. The critical elements of the network could be identified in the centrality analysis. The results of the study show the feasibility and effectiveness of the network analytical method used to explore the network properties of the HIF-1 signaling pathway and provide support for further research.
Plasma Membrane Vesicles From Cauliflower Meristematic Tissue And Their Role In Water Passage
Authors: Garcia-Ibañez Paula , Nicolas-Espinosa Juan , Carvajal Micaela 
Published: June 2020

Abstract
Background
Cauliflower (Brassica oleracea L. var. botrytis) inflorescences are composed mainly of meristematic tissue, which has a high cellular proliferation. This considerable cellular density makes the inflorescence an organ with a large proportion of membranes. However, little is known about the specific role of the lipid and protein composition of the plasma membrane present in this organ.
Results
In this work, we analyzed the lipids and proteins present in plasma membrane from two different stages of development of cauliflower inflorescence and compared them with leaf plasma membrane. For this purpose, plasma membrane vesicles were obtained by centrifugation for each sample and the vesicular diameter and osmotic permeability (Pf) were analyzed by dynamic light scattering and the stopped-flow technique, respectively. In addition, fatty acids and sterols were analyzed by gas chromatography and HPLC, respectively. The protein composition of the inflorescences and leaves was characterized by HPLC-ESI-QTOF-MS and the data obtained were compared with Brassicaceae proteins present in the UniProt database in relation to the presence of aquaporins determined by western blot analysis. The highest Pf value was found in 90 day inflorescences-derived plasma membrane vesicles (61.4 ± 4.14 µms− 1). For sterols and fatty acids, the concentrations varied according to the organ of origin. The protein profile revealed the presence of aquaporins from the PIP1 and PIP2 subfamilies in both inflorescences and leaves.
Conclusion
This study shows that the composition of the sterols, the degree of unsaturation of the fatty acids, and the proteins present in the membranes analyzed give them high functionality for water passage. This represents an important addition to the limited information available in this field.