bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increased salt tolerance in Zymomonas mobilis strain generated by adaptative evolution
Authors: Fuchino Katsuya , Bruheim Per 
Published: July 2020

Abstract
Background
Ethanologenic alphaproteobacterium Zymomonas mobilis has been acknowledged as a promising biofuel producer. There have been numerous efforts to engineer this species applicable for an industrial-scale bioethanol production. Although Z. mobilis is robustly resilient to certain abiotic stress such as ethanol, the species is known to be sensitive to saline stress at a mild concentration, which hampers its industrial use as an efficient biocatalyst. To overcome this issue, we implemented a laboratory adaptive evolution approach to obtain salt tolerant Z. mobilis strain.

Results
During an adaptive evolution, we biased selection by cell morphology to exclude stressed cells. The evolved strains significantly improved growth and ethanol production in the medium supplemented with 0.225 M NaCl. Furthermore, comparative metabolomics revealed that the evolved strains did not accumulate prototypical osmolytes, such as proline, to counter the stress during their growth. The sequenced genomes of the studied strains suggest that the disruption of ZZ6_1149 encoding carboxyl-terminal protease was likely responsible for the improved phenotype.

Conclusions
The present work successfully generated strains able to grow and ferment glucose under the saline condition that severely perturbs parental strain physiology. Our approach to generate strains, cell shape-based diagnosis and selection, might be applicable to other kinds of strain engineering in Z. mobilis.
EO771, the first luminal B mammary cancer cell line from C57BL/6 mice
Authors: Le Naour Augustin , Koffi Yvonne , Diab Mariane , Le Guennec Delphine , Rougé Stéphanie , Aldekwer Sahar , Goncalves-Mendes Nicolas , Talvas Jérémie , Farges Marie-Chantal , Caldefie-Chezet Florence , Vasson Marie-Paule , Rossary Adrien 
Published: July 2020

Abstract
Background
Despite decades of therapeutic trials, effective diagnosis, many drugs available and numerous studies on breast cancer, it remains the deadliest cancer in women. In order to choose the most appropriate treatment and to understand the prognosis of the patients, breast cancer is divided into different subtypes using a molecular classification. Just as there remains a need to discover new effective therapies, models to test them are also required.

Methods
The EO771 (also named E0771 or EO 771) murine mammary cancer cell line was originally isolated from a spontaneous tumour in C57BL/6 mouse. Although frequently used, this cell line remains poorly characterized. Therefore, the EO771 phenotype was investigated. The phenotype was compared to that of MCF-7 cells, known to be of luminal A subtype and to express estrogen receptors, as well as MDA-MB-231 cells, which are triple negative. Their sensitivity to hormonal treatment was evaluated by viability tests.

Results
The EO771 were estrogen receptor α negative, estrogen receptor β positive, progesterone receptor positive and ErbB2 positive. This phenotype was associated with a sensitivity to anti-estrogen treatments such as tamoxifen, 4-hydroxy-tamoxifen, endoxifen and fulvestrant.

Conclusions
On account of the numerous results published with the EO771 cell line, it is important to know its classification, to facilitate comparisons with corresponding types of tumours in patients. Transcriptomic and protein analysis of the EO771 cell line classified it within the luminal B subtype. Luminal B cancers correspond to one of the subtypes most frequently encountered in patients and associated with a poor prognosis.
The fabric of life: what if mosquito nets were durable and widely available but insecticide-free?
Authors: Okumu Fredros 
Published: July 2020

Abstract
Background
Bed nets are the commonest malaria prevention tool and arguably the most cost-effective. Their efficacy is because they prevent mosquito bites (a function of physical durability and integrity), and kill mosquitoes (a function of chemical content and mosquito susceptibility). This essay follows the story of bed nets, insecticides and malaria control, and asks whether the nets must always have insecticides.

Methods
Key attributes of untreated or pyrethroid-treated nets are examined alongside observations of their entomological and epidemiological impacts. Arguments for and against adding insecticides to nets are analysed in contexts of pyrethroid resistance, personal-versus-communal protection, outdoor-biting, need for local production and global health policies.

Findings
Widespread resistance in African malaria vectors has greatly weakened the historical mass mosquitocidal effects of insecticide-treated nets (ITNs), which previously contributed communal benefits to users and non-users. Yet ITNs still achieve substantial epidemiological impact, suggesting that physical integrity, consistent use and population-level coverage are increasingly more important than mosquitocidal properties. Pyrethroid-treatment remains desirable where vectors are sufficiently susceptible, but is no longer universally necessary and should be re-examined alongside other attributes, e.g. durability, coverage, acceptability and access. New ITNs with multiple actives or synergists could provide temporary relief in some settings, but their performance, higher costs, and drawn-out innovation timelines do not justify singular emphasis on insecticides. Similarly, sub-lethal insecticides may remain marginally-impactful by reducing survival of older mosquitoes and disrupting parasite development inside the mosquitoes, but such effects vanish under strong resistance.

Conclusions
The public health value of nets is increasingly driven by bite prevention, and decreasingly by lethality to mosquitoes. For context-appropriate solutions, it is necessary to acknowledge and evaluate the potential and cost-effectiveness of durable untreated nets across different settings. Though ~ 90% of malaria burden occurs in Africa, most World Health Organization-prequalified nets are manufactured outside Africa, since many local manufacturers lack capacity to produce the recommended insecticidal nets at competitive scale and pricing. By relaxing conditions for insecticides on nets, it is conceivable that non-insecticidal but durable, and possibly bio-degradable nets, could be readily manufactured locally. This essay aims not to discredit ITNs, but to illustrate how singular focus on insecticides can hinder innovation and sustainability.
Commentary in reply to a publication on Plasmodium falciparum pre-erythrocytic stage vaccine development
Authors: Roman François P. , Coccia Margherita , Schuerman Lode 
Published: July 2020

AbstractWe have read the publication of Molina-Franky and colleagues on Plasmodium falciparum pre-erythrocytic stage vaccine development (Malaria Journal, 2020;19:56). The commentary revises some of their statements on the RTS,S/AS01 vaccine that are considered either imprecise or incorrect.
Biodegradable hollow mesoporous organosilica nanotheranostics (HMON) for multi-mode imaging and mild photo-therapeutic-induced mitochondrial damage on gastric cancer
Authors: Guo Weihong , Chen Zhian , Chen Jiajia , Feng Xiaoli , Yang Yang , Huang Huilin , Liang Yanrui , Shen Guodong , Liang Yu , Peng Chao , Li Yanbing , Li Guoxin , Huang Wenhua , Zhao Bingxia , Hu Yanfeng 
Published: July 2020

Abstract
Background
CuS-modified hollow mesoporous organosilica nanoparticles (HMON@CuS) have been preferred as non-invasive treatment for cancer, as near infrared (NIR)-induced photo-thermal effect (PTT) and/or photo-dynamic effect (PDT) could increase cancer cells’ apoptosis. However, the certain role of HMON@CuS-produced-PTT&PDT inducing gastric cancer (GC) cells’ mitochondrial damage, remained unclear. Moreover, theranostic efficiency of HMON@CuS might be well improved by applying multi-modal imaging, which could offer an optimal therapeutic region and time window. Herein, new nanotheranostics agents were reported by Gd doped HMON decorated by CuS nanocrystals (called HMON@CuS/Gd).

Results
HMON@CuS/Gd exhibited appropriate size distribution, good biocompatibility, l-Glutathione (GSH) responsive degradable properties, high photo-thermal conversion efficiency (82.4%) and a simultaneous reactive oxygen species (ROS) generation effect. Meanwhile, HMON@CuS/Gd could efficiently enter GC cells, induce combined mild PTT (43–45 °C) and PDT under mild NIR power density (0.8 W/cm2). Surprisingly, it was found that PTT might not be the only factor of cell apoptosis, as ROS induced by PDT also seemed playing an essential role. The NIR-induced ROS could attack mitochondrial transmembrane potentials (MTPs), then promote mitochondrial reactive oxygen species (mitoROS) production. Meanwhile, mitochondrial damage dramatically changed the expression of anti-apoptotic protein (Bcl-2) and pro-apoptotic protein (Bax). Since that, mitochondrial permeability transition pore (mPTP) was opened, followed by inducing more cytochrome c (Cyto C) releasing from mitochondria into cytosol, and finally activated caspase-9/caspase-3-depended cell apoptosis pathway. Our in vivo data also showed that HMON@CuS/Gd exhibited good fluorescence (FL) imaging (wrapping fluorescent agent), enhanced T1 imaging under magnetic resonance imaging (MRI) and infrared thermal (IRT) imaging capacities. Guided by FL/MRI/IRT trimodal imaging, HMON@CuS/Gd could selectively cause mild photo-therapy at cancer region, efficiently inhibit the growth of GC cells without evident systemic toxicity in vivo.

Conclusion
HMON@CuS/Gd could serve as a promising multifunctional nanotheranostic platform and as a cancer photo-therapy agent through inducing mitochondrial dysfunction on GC.
An efficient method to isolate lemon derived extracellular vesicles for gastric cancer therapy
Authors: Yang Meng , Liu Xiaoyan , Luo Qingqiong , Xu Lili , Chen Fuxiang 
Published: July 2020

Abstract
Background
Plant-derived extracellular vesicles (PDEVs) have great potential for clinical applications. Ultracentrifugation, considered the gold standard method for the preparation of PDEVs, is efficacious but time-consuming and highly instrument-dependent. Thus, a rapid and handy method is needed to facilitate the basic researches and clinical applications of PDEVs.

Results
In this study, we combined electrophoretic technique with 300 kDa cut-off dialysis bag (named ELD) for the isolation of PDEVs, which was time-saving and needed no special equipment. Using ELD, lemon derived extracellular vesicles (LDEVs) could be isolated from lemon juice. Nanoparticle tracking analysis and transmission electron microscopy confirmed that the method separated intact vesicles with a similar size and number to the standard method-ultracentrifugation. LDEVs caused the gastric cancer cell cycle S-phase arrest and induced cell apoptosis. The anticancer activities of LDEVs on gastric cancer cells were mediated by the generation of reactive oxygen species. In addition, LDEVs were safe and could be remained in gastrointestinal organs.

Conclusions
ELD was an efficient method for the isolation of LDEVs, and could be carried out in any routine biological laboratory as no special equipment needed. LDEVs exerted anticancer activities on gastric cancer, indicating the great potentials for clinical application as edible chemotherapeutics delivery vehicle.
Mediating effects of depressive symptoms on social support and quality of life among rural older Chinese
Authors: Wang Jiayu , Xue Jiang , Jiang Yuxing , Zhu Tingfei , Chen Shulin 
Published: July 2020

AbstractBackgroundIt is not well clear how psychosocial factors like depressive symptoms, social support affect quality of life in rural elderly in China. This study aimed to investigate the mediating role of depressive symptoms in the association between social support and quality of life.MethodsCross-sectional data of 420 rural elderly were taken from four villages in Hangzhou City. They were interviewed with a demographic questionnaire, the Patient Health Questionnaire (PHQ-9) for depression, the Medical Outcomes Study Social Support Survey (MOS-SSS) for social support, and the short version of World Health Organization Quality of Life Assessment (WHOQOL-BREF) for quality of life. Mediation was examined by a nonparametric Bootstrapping method, controlling for socioeconomic variables.ResultsPoor quality of life was associated with low social support and increased depressive symptoms. A significant indirect effect of social support existed through depression in relation to quality of life (ab = 0.0213, 95% CI [0.0071, 0.0421]), accounting for 9.5% of the effect of social support on quality of life. Approximately 4.8% of the variance in QOL was attributable to the indirect effect of social support through depressive symptoms.ConclusionsDepressive symptoms mediated the impact of social support on quality of life among rural older adults.
Reliability and validity of the Thai pediatric quality of life inventory™ 3.0 neuromuscular module
Authors: Thongsing Apirada , Suksangkarn Yanin , Sanmaneechai Oranee 
Published: July 2020

Abstract
Background
Neuromuscular disorders (NMDs) are chronic illnesses that adversely impact the lives of patients and their families. The Pediatric Quality of Life™ 3.0 Neuromuscular Module (PedsQL™ 3.0 NMM) was designed to assess health-related quality of life (HRQoL) among children with NMDs. The objective of this cross-sectional study is to evaluate the reliability and validity of the PedsQL™ 3.0 NMM Thai version.

Methods
Formal permission to translate the PedsQL™ 3.0 NMM into Thai language was granted by the inventor, and the translation process followed linguistic translation guidelines. The PedsQL™ 3.0 NMM Thai version was administered to children with NMD and their parents/caregivers at the Division of Neurology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. Re-test was performed within 2–4 weeks after the initial test.

Results
One hundred and three children with NMD and their parents or caregivers were enrolled. Internal reliability as measured by Cronbach’s alpha was > 0.7 (total score: child α = 0.88, parent α = 0.91). Test-retest reliability showed good agreement with an intraclass correlation coefficient (ICC) of 0.69 and 0.82 for the total score of the child report and the parent report, respectively. The mean (SD) quality of life total score for the child self-report was 74.9 (13.9) among ambulatory patients, and 60.7 (15.2) among non-ambulatory patients (maximum quality of life score is 100). The mean total quality of life score for the parent proxy-report was 70 (14.5) among ambulatory patients, and 55.2 (18.3) among non-ambulatory patients. The child total score was in good agreement with the parent/caregiver total score.

Conclusions
PedsQL™ 3.0 NMM Thai version is a reliable and valid measure of HRQoL in Thai children with NMDs.
DCK is a promising prognostic biomarker and correlated with immune infiltrates in hepatocellular carcinoma
Authors: Song Danjun , Wang Yining , Zhu Kai , Tian Lingyu , Gao Qiang , Zhou Jian , Fan Jia , Wang Xiaoying 
Published: July 2020

Abstract
Background
Deoxycytidine kinase (DCK), an enzyme in the nucleoside biosynthetic pathway, can affect the development of immune cells. However, the relationships between the expression of DCK, patient prognosis, and tumor-infiltrating immune cells (TIICs) in hepatocellular carcinoma (HCC) are still unclear.

Methods
The expression of DCK in HCC was analyzed through the Oncomine and Tumor Immune Estimation Resource (TIMER) databases. The impact of DCK on clinical prognosis was investigated via the Kaplan-Meier plotter and verified in the Gene Expression Profiling Interactive Analysis (GEPIA) databases. The interrelationships between DCK expression and TIICs in HCC were analyzed by the TIMER database. Additionally, the relationship between DCK expression and immune cell gene markers was calculated through TIMER and GEPIA databases.

Results
Compared with the adjacent normal tissues, high expression of DCK was observed in HCC tissues. Also, the higher expression of DCK was correlated to poorer prognosis in HCC patients, and it was associated with decreased survival in those with early stage and grade. Moreover, DCK expression was positively correlated with TIICs, including CD4+ and CD8+ T cells, B cells, monocytes, tumor-associated macrophages (TAMs), M1 and M2 macrophages, neutrophils, natural killer cells, and dendritic cells. Specifically, DCK expression levels were significantly associated with diverse immune gene marker sets, including those of Tregs and exhausted T cells.

Conclusion
These findings suggest that DCK expression is correlated with patient outcomes and tumor infiltration cell levels in HCC patients. Additionally, the increased level of DCK was associated with marker genes of Tregs and exhaustion-related inhibitory receptors, suggesting the potential role of DCK in immunosuppression and immune escape. These findings suggest that DCK can function as a potential novel prognostic biomarker and reflect the immune infiltration status in HCC patients.
Preterm intraventricular hemorrhage in vitro: modeling the cytopathology of the ventricular zone
Authors: Castaneyra-Ruiz Leandro , McAllister James P. , Morales Diego M. , Brody Steven L. , Isaacs Albert M. , Limbrick David D. 
Published: July 2020

Abstract
Background
Severe intraventricular hemorrhage (IVH) is one of the most devastating neurological complications in preterm infants, with the majority suffering long-term neurological morbidity and up to 50% developing post-hemorrhagic hydrocephalus (PHH). Despite the importance of this disease, its cytopathological mechanisms are not well known. An in vitro model of IVH is required to investigate the effects of blood and its components on the developing ventricular zone (VZ) and its stem cell niche. To address this need, we developed a protocol from our accepted in vitro model to mimic the cytopathological conditions of IVH in the preterm infant.

Methods
Maturing neuroepithelial cells from the VZ were harvested from the entire lateral ventricles of wild type C57BL/6 mice at 1–4 days of age and expanded in proliferation media for 3–5 days. At confluence, cells were re-plated onto 24-well plates in differentiation media to generate ependymal cells (EC). At approximately 3–5 days, which corresponded to the onset of EC differentiation based on the appearance of multiciliated cells, phosphate-buffered saline for controls or syngeneic whole blood for IVH was added to the EC surface. The cells were examined for the expression of EC markers of differentiation and maturation to qualitatively and quantitatively assess the effect of blood exposure on VZ transition from neuroepithelial cells to EC.

Discussion
This protocol will allow investigators to test cytopathological mechanisms contributing to the pathology of IVH with high temporal resolution and query the impact of injury to the maturation of the VZ. This technique recapitulates features of normal maturation of the VZ in vitro, offering the capacity to investigate the developmental features of VZ biogenesis.
Comparisons of social and demographic determinants of tobacco use in the Democratic Republic of the Congo
Authors: Colwell Brian , Mosema Kizito B. A. , Bramble Matthew S. , Maddock Jay 
Published: July 2020

Abstract
Background
Worldwide, tobacco use has caused over 100 million deaths in the twentieth century and is projected to cause death in up to one billion people in the twenty-first century. It is a leading cause of early death and disability in over 100 countries and accounts for over 11% of global deaths, disproportionately affecting low- and middle-income countries. The purpose of the study was to examine a variety of social determinants of tobacco use in the Democratic Republic of the Congo, including region, sex, ethnicity, education, literacy, wealth index and place of residence, to gain insights with regard to tobacco use among sub-national groups.

Methods
This project was a secondary data analysis of the 2013–2014 Demographics and Health Survey (DHS) for the Democratic Republic of the Congo. Logistic regressions predicting smoking, use of snuff and smoking cigars or natural tobacco as dichotomous variables were conducted. Independent variables included age, educational level, religion, rurality, literacy, wealth index, occupation and ethnicity.

Results
Tobacco use is highest among those with less education and low literacy. It was also highest among the working poor. Older age and living in larger cities were predictive of smoking, although the relationship between age and smoking was not linear. There was a strong linear effect for wealth. Being in a professional, technical or managerial position was highly protective against smoking while being engaged in services, skilled and unskilled manual labor, and the army had significantly greater odds of smoking.

Conclusions
Data indicate that tobacco use in the DRC, as is common in the developing world, is heavily concentrated in the working poor with lower educational status. Higher educational status is consistently predictive of avoiding tobacco use. Additionally, examining only national-level data to ascertain tobacco use levels and patterns may lead to mistaken conclusions that can lead to inefficient and ineffective allocation of resources aimed at controlling tobacco use.
A review of the public sector substance use disorder treatment and prevention systems in Kenya
Authors: Jaguga Florence , Kwobah Edith 
Published: July 2020

Abstract
Background
The burden of substance use disorders in sub-Saharan Africa has been projected to increase by an estimated 130% by 2050. Despite this, little is known about the substance use disorder treatment and prevention systems in the region.

Objectives
The objective of this review is to describe the public sector substance use disorder treatment and prevention systems in Kenya guided by the World Health Organization health systems framework model, with the aim of informing decision-making.

Methods
We reviewed official government documents obtained from hand-searching the websites of relevant governmental organizations including: Ministry of Health, National Authority for the Campaign Against Alcohol and Drug Abuse, Parliament of Kenya, Ministry of Treasury & National Planning, National Law Reporting Council, Kenya National Bureau of Statistics, the National Non-Governmental Organization (NGO) Coordination Board and the 47 County Governments. We augmented those searches with official documents that the authors were aware of by virtue of being practitioners in the field. Draft and retired documents were excluded. The findings of the search are presented as a narrative review.

Discussion
The Mental Health Act 1989, the main legislative framework governing substance use disorder treatment and prevention, focuses on institutional care only. While there are only three public health facilities offering substance use disorder treatment in Kenya, several non-public sector actors are involved in SUD treatment and prevention activities. Unfortunately, there is limited cross-sector collaboration. The Ministry of Health has no specific budget for substance use disorder treatment and prevention, while the National Authority for the Campaign Against Alcohol and Drug Abuse has an annual resource gap of about US$ 5,000,000. The substance use disorder workforce in Kenya has not been characterized.

Conclusion
We propose five key strategies for strengthening substance use disorder treatment and prevention systems in Kenya including: (1) Enactment of the Mental Health (Amendment) bill 2018. (2) Integration of substance use disorder treatment and prevention into primary health care to increase access to care. (3) Utilization of money from taxation of alcohol, tobacco and betting to increase funding for substance use disorder treatment and prevention. (4) Characterization of the substance use disorder workforce to inform planning. (5) Enhanced collaboration between the government and non-state actors in order to increase access to SUD treatment and prevention.