bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identification of adipocytes as target cells for Leishmania infantum parasites
Authors: Schwing Aurélie , Pisani Didier F. , Pomares Christelle , Majoor Alissa , Lacas-Gervais Sandra , Lemichez Emmanuel , Marty Pierre , Boyer Laurent , Michel Grégory 
Published: March 2021

Abstract
Leishmania infantum is the causative agent of visceral leishmaniasis transmitted by the bite of female sand flies. According to the WHO, the estimated annual incidence of leishmaniasis is one million new cases, resulting in 30 000 deaths per year. The recommended drugs for treating leishmaniasis include Amphotericin B. But over the course of the years, several cases of relapses have been documented. These relapses cast doubt on the efficiency of actual treatments and raise the question of potential persistence sites. Indeed, Leishmania has the ability to persist in humans for long periods of time and even after successful treatment. Several potential persistence sites have already been identified and named ‘safe targets’. As adipose tissue has been proposed as a sanctuary of persistence for several pathogens, we investigated whether Leishmania infantum could be found in this tissue. We demonstrated both in cell cultures and in vivo that Leishmania infantum was able to infect adipocytes. Altogether our results suggest adipocytes as a ‘safe target’ for Leishmania infantum parasites.
Assessing the performance of a Northeast Asia Japan-cantered 3-D ionosphere specification technique during the 2015 St. Patrick’s day solar storm
Authors: Ssessanga Nicholas , Yamamoto Mamoru , Saito Susumu 
Published: March 2021

Abstract
This paper demonstrates and assesses the capability of the advanced three- dimensional (3-D) ionosphere tomography technique, during severe conditions. The study area is northeast Asia and quasi-Japan-centred. Reconstructions are based on Total electron content data from a dense ground-based global navigation satellite system receiver network and parameters from operational ionosondes. We used observations from ionosondes, Swarm satellites and radio occultation (RO) to assess the 3-D picture. Specifically, we focus on St. Patrick’s day solar storm (17–19 March 2015), the most intense in solar cycle 24. During this event, the energy ingested into the ionosphere resulted in Dst and Kp and reaching values ~-223 nT and 8, respectively, and the region of interest, the East Asian sector, was characterized by a ~ 60% reduction in electron densities. Results show that the reconstructed densities follow the physical dynamics previously discussed in earlier publications about storm events. Moreover, even when ionosonde data were not available, the technique could still provide a consistent picture of the ionosphere vertical structure. Furthermore, analyses show that there is a profound agreement between the RO profiles/in-situ densities and the reconstructions. Therefore, the technique is a potential candidate for applications that are sensitive to ionospheric corrections.
Impaired Function of PD-1+ Follicular Regulatory T Cells in Systemic Lupus Erythematosus
Authors: Kurata Izumi , Mikami Natsuko , Ohyama Ayako , Osada Atsumu , Kondo Yuya , Tsuboi Hiroto , Sumida Takayuki , Matsumoto Isao 
Published: March 2021

Abstract
Objective:
Aberrant autoantibody production is characteristic of systemic lupus erythematosus (SLE) but follicular regulatory T (TFR) cells potentially can suppress this abnormality. Here, we investigate functional changes in TFR cells from SLE patients.
Methods:
Circulating TFR cells were collected from 19 SLE patients and 14 healthy controls to compare molecular expression and in vitro suppressive capacity of follicular helper T (TFH) cell proliferation. We then tested IL-2 in SLE-TFR cells to check restoration of suppressor function.
Results:
Programmed death-1 (PD-1) expression in SLE-TFR cells was positively correlated with anti-DNA antibody levels and disease activity. These cells had impaired suppressive function for TFH cells with decreased expression of suppression mediators forkhead box p3 (Foxp3), cytotoxic T-lymphocyte antigen 4 (CTLA4), and IL-2 receptor alpha (IL2Rα). In vitro IL-2 stimulation restored expression of these molecules.
Conclusion:
SLE-TFR cells have functional TFH suppression defects but low-dose IL-2 therapy could be useful to restore this ability.
Risk Factors for Colonization and Infection With Resistant Pseudomonas Aeruginosa in Intensive Care Unit: Protocol for a Systematic Review and Meta-analysis
Authors: Eyebe Serge , Nana-Djeunga Hugues , Guewo-Fokeng Magellan , Wafeu Guy Sadeu , Wouking Marius , Massoda Salomon , Evina Danielle , Zoumabo Aurelia Condomat , Zogo Pierre Ongolo , Zahar Jean Ralph 
Published: March 2021

Abstract
Background: Infection with resistant Pseudomonas aeruginosa (RPA) in Intensive Care Unit (ICU) is known to be either endogenous or exogenous or both, but the roles of each of these contamination routes is yet to be clarified. Data regarding prevalence, risk factors and environmental factors associated with RPA in ICU are very scanty and even when they exist, they seem to be contradictory. So, there is a strong interest in understanding both individual and environmental factors associated with RPA infection. This systematic review aims to investigate individual and environmental factors associated with the colonization and infection with RPA in ICU.Methodology: MEDLINE (Pubmed), EMBASE (OVID), the Cochrane Library (Wiley), Web of Science, CINAHL (EBSCOHost) and LILACS (BIREME) will be searched from inception onwards. Grey literature will be identified through Google Scholar and open Grey. Two reviewers will independently screen all citations, abstracts and full-text articles. Potential conflicts will be resolved through discussion. Methodological quality including bias will be appraised using appropriate approaches. A narrative synthesis will describe quality and content of the epidemiological evidence. Prevalence, Odds ratio, Relative Risk, Hazard radio with their respective 95% confidence intervals will be calculated. A meta-analysis of data extracted from eligible studies with similar population and RPA testing will be performed. The analysis will evaluate factors influencing the estimates. A random effect model will be used to summarize effect sizes.Discussion: Two contrasting hypotheses on risk factors of acquisition, colonisation, and infection of RPA are being debated, especially in a context where available data are scanty or exhibit high discrepancy. Indeed, most of the reviews have been focalized on hospitalised patients, and not in ICU, and few of them really address the environmental factors issue. To fill that gap, this review will combine both analysis of individual and environmental risk factors using prevalence study in ICU and evaluation of different methodologies. These two hypotheses will be tested and challenged, and could serve as a basis for a more in-depth studies to fill the methodological gaps that will be identified as part of this current review.Systematic review registration: This protocol has been submitted registered with Prospective Register of Systematic Reviews (PROSPERO) on 07 march 2021 under number CRD42021233832
Characteristics of CT Hounsfield Unit Values in Lumbar Vertebrae and Lumbar Pedicle – A comparative Study Based on CT Scans and Dual-Energy X-ray Absorptiometry (DEXA)
Authors: Nguyen Viet Anh , Sun Chi , Xu Haocheng , Wang Hongli , Ma Xiaosheng , Lu Feizhou , Jiang Jianyuan 
Published: March 2021

Abstract
PurposesThe purpose of this study was to evaluate CT HU value in specific regions of the Lumbar Spine and investigate the correlation between their CT HU values and the corresponding bone quality index provided by Dual-Energy X-ray Absorptiometry (DEXA). MethodsA total of 32 Chinese adults with lumbar degenerative disc disease requiring diagnostic lumbar CT and DEXA at our hospital were retrospectively reviewed in this study. The HU value of medial cortical area (mHU), lateral cortical area (lHU) and trabecular area (tpHU) of the pedicle and superior part, middle part, inferior part of the vertebral body (sHU, mbHU, iHU, respectively) were measured on CT images. T score and BMD score of each vertebra were also measured by DEXA. The HU value was compared between sex groups, vertebra and the correlations of HU value with DEXA T-score, DEXA BMD-score were analyzed. ResultsIn vertebral body, the value of mHU is the lowest (p<0.001) while mbHU and iHU are not significantly different. The tpHU had the lowest HU value compared to mHU and lHu. mHU had significantly higher value than lHU at all levels (p<0.001). The value of mHU and lHU is found correlated with T-scores(p<0.01) at all lumbar levels. The value of tpHU is not correlated with either T-scores or BMD(p>0.05). The HU values of all vertebral body regions at all lumbar levels (sHU,mbHU,iHU) correlate strongly with T-scores and BMD(r>0.6, p<0.01). ConclusionsCT HU value could be a reliable indicator for regional bone quality, especially in people with lumbar degenerative changes. The superior portion of the lumbar vertebra had the lowest bone density in comparison with other regions of the vertebra at L1-L4. In lumbar pedical, the medial lateral cortical bone area had higher bone density than the lateral cortical bone and trabecula bone area.
Ticagrelor versus Clopidogrel in Stent-assisted Coil Embolization of Unruptured Intracranial Aneurysms
Authors: Chien Shuo-Chi , Chen Ching-Chang , Chen Chun-Ting , Wang Alvin Yi-Chou , Hsieh Po-Chuan , Yeap Mun-Chun , Liu Zhuo-Hao , Wang Yu-Chi , Liu Yu-Tse 
Published: March 2021

Abstract
Background: In order to prevent thromboembolic events, dual antiplatelet therapy (DAPT) is widely used in stent-assisted coil embolization (SACE) for unruptured intracranial aneurysms (UIAs). Compared to clopidogrel associated with aspirin, knowledge of the safety and efficacy of ticagrelor are lacking in large studies to this date.Methods: A retrospective cohort study from January 2016 to December 2018 with at least one year follow in a single institution and systemic review.Results: Altogether 153 patients with UIA receiving SACE were separated into two groups: 113 patients receiving clopidogrel plus aspirin and 40 patients receiving ticagrelor plus aspirin. Acute in-stent thrombosis events were noted in 2 patients in the clopidogrel group (1.77%) and none in the ticagrelor group (0%). Another 1 patient (0.88%) in the clopidogrel group had an early ischemic stroke (<3 months). Delayed ischemic stroke was noted in 6 patients (5.31%) in the clopidogrel group and 3 patients (7.50%) in the ticagrelor group. There was no major hemorrhagic event in either group. The two groups had no significant differences with regard to ischemic stroke or hemorrhagic stroke.Conclusion: Compared to the clopidogrel based regimen, ticagrelor can reduce thromboembolic events without increasing bleeding tendency for stent-assisted coil embolization of unruptured intracranial aneurysms. Ticagrelor plus aspirin is a safe and effective alternative option for SACE.
Biomarkers and prevalence of cardiometabolic syndrome among people living with HIV/AIDS, Addis Ababa, Ethiopia: a hospital-based, observational study.
Authors: Woldu Minyahil , Minzi Omary , Shibeshi Workineh , Shewamare Aster , Engidawork Ephrem 
Published: March 2021

Abstract
Background
Although marked improvements in life expectancy have been observed with the rapid expansion of Antiretroviral Therapy (ART), Cardiometabolic Syndrome (CMetS) is becoming a serious challenge for People Living with HIV/AIDS (PLWHA). The present study aimed in determining biomarkers and prevalence of CMetS in PLWHA.
Methods
A hospital-based, observational study was carried out between January 2019 & February 2020 among HIV infected adults (n = 288). Binary logistic regression was used to estimate odds ratio (OR) and corresponding 95% confidence interval (CI) for the association between the outcomes against the predictor variables.
Results
The current study revealed that the prevalence of CMetS was 28.5% (82/288) using the National Cholesterol Education Program (NCEP)-2005 definition; and it was 43.5% (126/288) using the International Diabetes Federation (IDF)-2005. Male gender was less likely to be associated with CMetS (OR = .086, C.I. 0.025–0.292, p < 0.001) using the NCEP-2005 definition. Individuals with longer duration on ART have an increased odds of CMetS using both the NCEP-2005 (OR = 1.024, C.I. 1.005–1.043, p = 0.014) and the IDF-2005 (OR = 1.251, C.I. 1.061–1.472, p = 0.007) definitions. The age at which ART initiated yet have an impact on the outcomes of CMetS (NCEP-2005: OR = 1.27, C.I. 1.031–1.564, p = 0.025), indicating that individuals who started ART treatment at older age are more likely to have CMetS than their younger counterparts. The study further verified that, individuals with increased waist-grid (central adiposity) were more likely to have CMetS using both the NCEP-2005 (OR = 1.21, C.I. 1.029–1.418, p = 0.021) and the IDF-2005 (OR = 1.730 C.I. 1.454–2.058, p < 0.001) definitions. PLWHA with increased in DBP (OR = 1.164, C.I.1.080–1.254, p < 0.001), Triglyceride (OR = 1.027, C.I. 0.015–0.039, p < 0.001), and low density lipoproteins (OR = 1.075, C.I. 0.020–0.134, p = 0.007) were more likely to have CMetS using the NCEP-2005 definition. PLWHA without comorbidity were less likely to have CMetS (NCEP-2005: OR = 0.086, C.I. 0.025–0.292, p < 0.001).
Conclusions
The prevalence of CMetS in the study area was high. Risk factors associated with CMetS were waist circumference, gender, duration on ART; ART initiated age, waist-grid, and comorbidity. Biomarkers that were more likely contributed to the prevalence of CMetS include triglyceride, low density lipoproteins, and systolic blood pressure.
Design and synthesis of novel pyrazole-benzofuran hybrids: in vitro α-glucosidase inhibitory activity, kinetic and molecular modeling study
Authors: Azimi Fateme , Azizian Homa , Najafi Mohammad , khodarahmi Ghadamali , hassanzadeh Motahareh , Saghaei Lotfollah , Ghasemi Jahan B. , Sadeghi-aliabadi Hojjat , Faramarzi Mohammad Ali , Larijani Bagher , Hassanzadeh Farshid , Mahdavi Mohammad 
Published: March 2021

Abstract
In this work, new derivatives of biphenyl pyrazole-benzofuran hybrids designed, synthesized and evaluated in vitro through enzymatic assay for inhibitory effect against α-glucosidase activity. Newly identified inhibitors were found to be four to eighteen folds more active with IC50 values in the range of 40.6 ± 0.2–164.3 ± 1.8 µM, as compared to the standard drug acarbose (IC50 = 750.0 ± 10.0 µM). Limited Structure-activity relationship was established. A kinetic binding study indicated that most active compound 8e acted as the competitive inhibitors of α-glucosidase with Ki = 38 µM. Molecular docking has also been performed to find the interaction modes responsible for the desired inhibitory activity. As expected, all pharmacophoric features used in the design of the hybrid, are involved in the interaction with the active site of the enzyme. In addition, molecular dynamic simulations showed compound 8e oriented vertically into the active site from mouth to the bottom and stabilized the enzyme domains by interacting with the interface of domain A and domain B and the back side of the active site while acarbose formed non-binding interaction with the residue belong to the domain A of the enzyme.
Predictors of Glycemic Control Among Patients With Type 2 Diabetes in North West Ethiopia: A Longitudinal Study
Authors: Shita Nigusie Gashaye , Iyasu Ashagrie Sharew 
Published: March 2021

Abstract
Background

Type 2 diabetes mellitus patients with hyperglycemia for a long period of time are significant causes of mortality and morbidity worldwide. Studying the predictors of glycemic control help to minimize deaths and the development of acute and chronic diabetes complication. Hence, the aim of this study is to asses’ predictors of glycemic control among patients with Type 2 diabetes in Ethiopia.
Methods

A retrospective cohort study was conducted among Type 2 Diabetes mellitus (T2DM) patients enrolled between December 2011 and December 2012 at Debre Markos and Felege Hiwot Referral Hospital. A total of 191 T2DM patients was included in the study who meets the eligibility criteria. Generalized linear mixed model was employed.
Results

The prevalence of good glycemic control among type 2 diabetes patients was 58.4% where as 23.25% of variation was explained in the fitted model due to adding the random effects. The significance predictors of glycemic control among patients with Type 2 diabetes at 95% confidence level were reside in rural(0.454, 0.614)), patients age 38–50, 51–59 and 60–66 years(1.267,1.776), (1.057,1.476) and (1.004, 1.403), respectively, Proteinuria positive(1.211,1.546), diastolic blood pressure ≥ 90 (1.101, 1.522), systolic blood pressure ≥ 140 (1.352, 1.895), creatinine (0.415, 0.660), duration per visit (0.913, 0.987), duration since diagnosis (0.985, 0.998), weight 78–88(0.603, 0.881).
Conclusion

Level of glycemic control among type 2 diabetes patients was poor. Resident, age, weight, duration of T2DM since diagnosis, duration of type 2 DM per visit, follow up time, protein urea, diastolic blood pressure, systolic blood pressure and creatinine were significant predictors of glycemic control among type 2 DM patients. During diabetic patients follow up, clinicians should give appropriate attention to these significant variables for good glycemic control since it is the main goal of diabetes management.
Synthesis and Evaluation of Benzohydrazide Derivative as a Corrosion Protector for Magnesium Alloy in 3%Nacl
Authors: KALIYAPERUMAL RAJA , - T.KASILINGAM 
Published: March 2021

Abstract
Inhibition action of 4-Chloro-N(3,4,5-trimethoxybenzilidene) benzohydrazide on the corrosion of magnesium alloy in alkaline medium was investigated by weight-loss technique, Nyquist spectra, Tafel plot, scanning electron microscope and energy dispersive x-ray analysis. Tafel curves of magnesium alloy showed both anodic and cathodic process suppressed. Nyquist plots, scanning electron microscope and energy dispersive x-ray analysis studies provide the confirmatory evidence for the protection of magnesium alloy by the studied inhibitor.
Machine Learning Methods for Predicting Conversion from Mild Cognitive Impairment to Alzheimer's Disease. A Systematic Review.
Authors: Grueso Sergio , Viejo-Sobera Raquel 
Published: March 2021

Abstract
Background: Increase in life-span in our society is a double-edged sword that entails a growing number of patients with neurocognitive disorders, Alzheimer’s disease being the most prevalent. Advances in medical imaging and computational power, enable new methods for early detection of neurocognitive disorders with the goal of preventing or reducing cognitive decline. Computer-aided image analysis and early detection of changes in cognition is a promising approach for patients with mild cognitive impairment, sometimes a prodromal stage of Alzheimer’s disease.Methods: We conducted a systematic review following PRISMA guidelines of studies where Machine Learning was applied to neuroimaging data in order to predict the progression from Mild Cognitive Impairment to Alzheimer’s disease. After removing duplicates, we screened 159 studies and selected 47 for a qualitative analysis. Results: Most studies used Magnetic Resonance Image and Positron Emission Tomography data but also Magnetoencephalography. The datasets were mainly extracted from the Alzheimer’s disease Neuroimage Initiative (ADNI) database with some exceptions. Regarding the algorithms used, the most common were support vector machines, but more complex models such as Deep Learning, combined with multimodal and multidimensional data (neuroimaging, clinical, cognitive, biological, and behavioral) achieved the best performance. Conclusions: Although performance of the different models still has room for improvement, the results are promising and this methodology has a great potential as a support tool for clinicians and healthcare professionals.
Exploring the relationship between depression and different multimorbidity patterns among older people covered by long-term care insurance in Shanghai, China
Authors: Li Cancan , Peng Wenjia , Li Mengying , Li Xinghui , Yang Tingting , Yan Huosheng , Wang Zijing , Jia Xianjie , Hu Zhi , Wang Ying 
Published: March 2021

Abstract
Background: Depression is common in patients with multimorbidity, but little is known about the relationship between depression and multimorbidity. The purpose of our research was to investigate multimorbidity patterns and their association with depression in a sample of older people covered by long-term care insurance in Shanghai, China.Method: This was a population-based cross-sectional study, and participants included older people covered by long-term care insurance in Shanghai. We collected information on chronic conditions using a self-reported medical history, and we used the 30-item Geriatric Depression Scale to evaluate depressive symptoms. Patterns of multimorbidity were identified with exploratory factor analysis, using oblimin rotation. Logistic regression was used to estimate the relationship between multimorbidity patterns and depressive symptoms.Results: Hypertension, cardiovascular disease, cerebrovascular disease (CVD), and cataract showed strong associations with depression when co-occurring with other conditions. Three patterns of multimorbidity were identified: a musculoskeletal pattern, cardiometabolic pattern, and degenerative disease pattern. Among these, the cardiometabolic (adjusted odds ratio [AOR] 1.223; 95% confidence interval [CI] 1.102, 1.357) and degenerative disease (AOR 1.185; 95% CI 1.071, 1.311) patterns were associated with a higher risk of depressive symptoms.Conclusion: Two of three multimorbidity patterns were found to be associated with depression. Physical and psychological dimensions require greater attention in the care of older adults who are covered by long-term care insurance.