bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimating Ideal Points of Newspapers from Editorial Texts
Authors: Kaneko Tomoki , Asano Taka-aki , Miwa Hirofumi
Published: July 2020

Although measuring the ideal points of news media is essential for testing political communication theories based on spatial theory, prior methods of estimating ideal points of media outlets have various shortcomings, including high cost in terms of time and human resources and low applicability to different countries. We propose that unsupervised machine learning techniques for text data, specifically the combination of a text scaling method and latent topic modeling, can be applied to estimate ideal points of media outlets. We applied our proposed methods to editorial texts of ten national and regional newspapers in Japan, where prior approaches are not applicable because newspapers have never officially endorsed particular parties or candidates, and because high-quality training data for supervised learning are not available. Our two studies, one of which analyzed editorials on a single typically ideological topic while the other investigated all editorials published by the target papers in one year, confirmed the popular view of Japanese newspapers’ ideological slant, which validates the effectiveness of our proposed approach. We also illustrate that our methods allow scholars to investigate which issues are closely related to the respective ideological positions of media outlets. Furthermore, we use the estimated ideal points of newspapers to show that Japanese people partially tend to read ideologically like-minded newspapers and follow such newspapers’ Twitter accounts even though their slant is not explicit.
Forms of comprehension
Authors: McCormack Derek
Published: July 2020

This commentary addresses a series of questions that emerge from James Ash’s paper. In doing so it foregrounds issues of temporality, flatness, entities, worlds, and politics. It uses a consideration of these issues to reflect briefly on the relations between ontologies and on the question of comprehension as a particular form of relation.
Don’t forget ototoxicity during the SARS-CoV-2 (Covid-19) pandemic!
Authors: Ciorba Andrea , Corazzi Virginia , Skarżyński Piotr Henryk , Skarżyńska Magdalena B , Bianchini Chiara , Pelucchi Stefano , Hatzopoulos Stavros
Published: July 2020

Aim of this communication is to remind clinical professionals to be aware of ototoxic side effects of several specific drugs proposed for the treatment of the new virus SARS-CoV-2 (Covid-19). In particular, chloroquine and hydroxychloroquine, azithromycin, as well as antiviral drugs such as remdesivir, favipiravir and lopinavir can all present potential ototoxic side effects. The data in the literature do not offer specific information on their potential synergetic effects nor on their interactions.
Courage, Fortitude, and Effective Leadership of Surgical Teams During COVID-19
Authors: Stephens Elizabeth H. , Dearani Joseph A. , Guleserian Kristine J.
Published: July 2020

The world as we once knew it has been drastically altered secondary to coronavirus disease 2019 (COVID-19). The impact of these changes, particularly for those practicing in the medical profession, extends beyond the physical to the psychological, emotional, and spiritual. We discuss the factors that contribute to these stresses, way to manage them, and how we as leaders of our teams can inspire resilience and help our colleagues endure these most difficult times.
Resource Mobilization’s Effect on the Social Construction of Identity on Twitter: A Case Study of J.J. Watt’s Hurricane Harvey Relief
Authors: Kucek Jake Andrew
Published: July 2020

Social media provides an area for athletes to engage with a mass audience and, in turn, has users create a narrative about the athlete in a collaborative effort. Using a platform, such as Twitter, offers numerous affordances for network interactions, which result in the shaping of online identities. Gaining insight into how resource mobilization impacts dialog and identity construction of an athlete is essential as sports have the unique ability to reach and influence a broad audience. This article explores how J.J. Watt used resource mobilization on Twitter to aid the Hurricane Harvey relief, and how his identity was socially constructed over a 3-year period. Based on a textual analysis of 2,965 tweets, the results show that Watt was able to use his celebrity status and active involvement to achieve the largest crowdsourced fundraiser in history. Further, Watt’s actions transformed his identity as a football player into a humanitarian.
Escher-Trace: a web application for pathway-based visualization of stable isotope tracing data
Authors: Kumar Avi , Mitchener Jack , King Zachary A. , Metallo Christian M.
Published: July 2020

Background

Stable isotope tracing has become an invaluable tool for probing the metabolism of biological systems. However, data analysis and visualization from metabolic tracing studies often involve multiple software packages and lack pathway architecture. A deep understanding of the metabolic contexts from such datasets is required for biological interpretation. Currently, there is no single software package that allows researchers to analyze and integrate stable isotope tracing data into annotated or custom-built metabolic networks.

Results

We built a standalone web-based software, Escher-Trace, for analyzing tracing data and communicating results. Escher-Trace allows users to upload baseline corrected mass spectrometer (MS) tracing data and correct for natural isotope abundance, generate publication quality graphs of metabolite labeling, and present data in the context of annotated metabolic pathways. Here we provide a detailed walk-through of how to incorporate and visualize 13C metabolic tracing data into the Escher-Trace platform.

Conclusions

Escher-Trace is an open-source software for analysis and interpretation of stable isotope tracing data and is available at https://escher-trace.github.io/.
RNA-Seq transcriptome reveals different molecular responses during human and mouse oocyte maturation and fertilization
Authors: Zhao Zheng-Hui , Meng Tie-Gang , Li Ang , Schatten Heide , Wang Zhen-Bo , Sun Qing-Yuan
Published: July 2020

Background

Female infertility is a worldwide concern and the etiology of infertility has not been thoroughly demonstrated. Although the mouse is a good model system to perform functional studies, the differences between mouse and human also need to be considered. The objective of this study is to elucidate the different molecular mechanisms underlying oocyte maturation and fertilization between human and mouse.

Results

A comparative transcriptome analysis was performed to identify the differentially expressed genes and associated biological processes between human and mouse oocytes. In total, 8513 common genes, as well as 15,165 and 6126 uniquely expressed genes were detected in human and mouse MII oocytes, respectively. Additionally, the ratios of non-homologous genes in human and mouse MII oocytes were 37 and 8%, respectively. Functional categorization analysis of the human MII non-homologous genes revealed that cAMP-mediated signaling, sister chromatid cohesin, and cell recognition were the major enriched biological processes. Interestingly, we couldn’t detect any GO categories in mouse non-homologous genes.

Conclusions

This study demonstrates that human and mouse oocytes exhibit significant differences in gene expression profiles during oocyte maturation, which probably deciphers the differential molecular responses to oocyte maturation and fertilization. The significant differences between human and mouse oocytes limit the generalizations from mouse to human oocyte maturation. Knowledge about the limitations of animal models is crucial when exploring a complex process such as human oocyte maturation and fertilization.
Genome-wide epigenetic analyses in Japanese immigrant plantation workers with Parkinson’s disease and exposure to organochlorines reveal possible involvement of glial genes and pathways involved in neurotoxicity
Authors: Go Rodney C. P. , Corley Michael J. , Ross G. Webster , Petrovitch Helen , Masaki Kamal H. , Maunakea Alika K. , He Qimei , Tiirikainen Maarit I.
Published: July 2020

Background

Parkinson’s disease (PD) is a disease of the central nervous system that progressively affects the motor system. Epidemiological studies have provided evidence that exposure to agriculture-related occupations or agrichemicals elevate a person’s risk for PD. Here, we sought to examine the possible epigenetic changes associated with working on a plantation on Oahu, HI and/or exposure to organochlorines (OGC) in PD cases.

Results

We measured genome-wide DNA methylation using the Illumina Infinium HumanMethylation450K BeadChip array in matched peripheral blood and postmortem brain biospecimens in PD cases (n = 20) assessed for years of plantation work and presence of organochlorines in brain tissue. The comparison of 10+ to 0 years of plantation work exposure detected 7 and 123 differentially methylated loci (DML) in brain and blood DNA, respectively (p < 0.0001). The comparison of cases with 4+ to 0–2 detectable levels of OGCs, identified 8 and 18 DML in brain and blood DNA, respectively (p < 0.0001). Pathway analyses revealed links to key neurotoxic and neuropathologic pathways related to impaired immune and proinflammatory responses as well as impaired clearance of damaged proteins, as found in the predominantly glial cell population in these environmental exposure-related PD cases.

Conclusions

These results suggest that distinct DNA methylation biomarker profiles related to environmental exposures in PD cases with previous exposure can be found in both brain and blood.
Rescue therapy with rifabutin regimen for refractory Helicobacter pylori infection with dual drug-resistant strains
Authors: Kuo Chia-Jung , Lin Cheng-Yu , Le Puo-Hsien , Chang Pi-Yueh , Lai Chih-Ho , Lin Wey-Ran , Chang Ming-Ling , Hsu Jun-Te , Cheng Hao-Tsai , Tseng Chi-Nan , Lin Chun-Jung , Su Ming-Yao , Hsieh Sen-Yung , Chiu Cheng-Tang
Published: July 2020

Background

There is no current standard rescue treatment for dual drug-resistant strains of Helicobacter pylori (H. pylori). This aim of this study was to investigate the efficacy of rifabutin-based triple therapy for patients infected with dual drug-resistant strains to clarithromycin and levofloxacin.

Methods

After 2 or 3 H. pylori treatment failures, patients underwent upper endoscopy with tissue biopsies. Phenotypic and genotypic resistances were determined using agar dilution test and polymerase chain reaction with direct sequencing, respectively. Patients infected with dual drug-resistant (clarithromycin and levofloxacin) strains and receiving rifabutin-based triple therapy (rifabutin 150 mg bid, amoxicillin 1 g bid and esomeprazole 40 mg bid for 10 days) were enrolled. Eradication status was determined by 13C-urea breath test 4 weeks after treatment completion.

Results

A total of 39 patients infected with dual drug-resistant strains were enrolled in this study, with a mean age of 55.9 years. The eradication rate was 79.5% (31/39) (95% confidence intervals: 54.96% ~ 111.40%). Adverse event was reported in 23.1% (9/39) of patients but they were mild and tolerable. In univariate analysis, no factor was identified as an independent predictor of eradication failure.

Conclusions

Our current study demonstrated that rifabutin-based triple therapy was well tolerated and yielded an acceptable eradication rate for patients infected with dual drug-resistant strains of H. pylori.
Third follow-up of the Cardiovascular Risk Factors, Aging and Dementia (CAIDE) cohort investigating determinants of cognitive, physical, and psychosocial wellbeing among the oldest old: the CAIDE85+ study protocol
Authors: Barbera Mariagnese , Kulmala Jenni , Lisko Inna , Pietilä Eija , Rosenberg Anna , Hallikainen Ilona , Hallikainen Merja , Laatikainen Tiina , Lehtisalo Jenni , Neuvonen Elisa , Rusanen Minna , Soininen Hilkka , Tuomilehto Jaakko , Ngandu Tiia , Solomon Alina , Kivipelto Miia
Published: July 2020

Background

The oldest old is the fastest growing age group worldwide and the most prone to severe disability, especially in relation to loss of cognitive function. Improving our understanding of the predictors of cognitive, physical and psychosocial wellbeing among the oldest old can result in substantial benefits for the individuals and for the society as a whole.

The Cardiovascular Risk Factors, Aging and Dementia (CAIDE) study investigated risk factors and determinants of cognitive impairment in a population-based longitudinal cohort, which was first examined between 1972 and 1992, when individuals were in their midlife, and re-assessed in 1998 and 2005–2009. Most of the study participants are currently aged 85 years or older. We aim to re-examine the cohort’s survivors and gain further insights on the mechanisms underlying both cognitive and overall healthy ageing at old age.

Methods

CAIDE85+ is the third follow-up of the CAIDE study participants. All individuals still alive and living in the Kuopio and Joensuu areas of Eastern Finland, from the original CAIDE cohort (two random samples, N = 2000 + ~ 900), will be invited to a re-examination. The assessment includes self-reported data related to basic demographics and lifestyle, as well as psychosocial and physical health status. Cognitive and physical evaluations are also conducted. Blood biomarkers relevant for dementia and ageing are assessed.

Primary outcomes are the measurements related to cognition and daily life functioning (CERAD, Trail Making Test-A, Letter-Digit Substitution Test, Clinical Dementia Rating and Activities of Daily Living). Secondary endpoints of the study are outcomes related to physical health status, psychosocial wellbeing, as well as age-related health indicators.

Discussion

Through a follow-up of more than 40 years, CAIDE85+ will provide invaluable information on the risk and protective factors that contribute to cognitive and physical health, as well as ageing and longevity.

Study registration

The present study protocol has been registered at https://clinicaltrials.gov/ (registration nr NCT03938727, date 03.05.2019).
Farnesoid X receptor as marker of osteotropism of breast cancers through its role in the osteomimetism of tumor cells
Authors: Absil L. , Journé F. , Larsimont D. , Body J. J. , Tafforeau L. , Nonclercq D.
Published: July 2020

Background

The skeleton is the first and most common distant metastatic site for breast cancer. Such metastases complicate cancer management, inducing considerable morbidities and decreasing patient survival. Osteomimetism is part of the complex process of osteotropism of breast cancer cells. Recent data indicate that Farnesoid X Receptor (FXR) is involved in the transformation and progression of breast cancer.

Methods

The expression of FXR, Runt-related transcription factor 2 (RUNX2) and bone proteins were evaluated on two tumor cell lines (MCF-7 and MDA-MB-231) by immunohistochemistry, immunofluorescence and western blotting and quantified.

Results

In a series of 81 breast cancer patients who developed distant metastases, we found a strong correlation between FXR expression in primary breast tumors and the development of bone metastases, especially in patients with histological grade 3 tumors. In in vitro studies, FXR activation by Chenodeoxycholic acid (CDCA) increased the expression of numerous bone proteins. FXR inhibition by lithocholic acid and z-guggulsterone decreased bone protein expression. Short Hairpin RNA (ShRNA) against FXR validated the involvement of FXR in the osteomimetism of breast cancer cells.

Conclusion

Our experimental results point to a relationship between the expression of FXR in breast cancer cells and the propensity of these tumor cells to develop bone metastases. FXR induces the expression of RUNX2 which itself causes the synthesis of bone proteins by tumor cells.
Adjuvant Transarterial chemoembolization does not influence recurrence-free or overall survival in patients with combined hepatocellular carcinoma and Cholangiocarcinoma after curative resection: a propensity score matching analysis
Authors: Liu Wei-Ren , Tian Meng-Xin , Tao Chen-Yang , Tang Zheng , Zhou Yu-Fu , Song Shu-Shu , Jiang Xi-Fei , Wang Han , Zhou Pei-Yun , Qu Wei-Feng , Fang Yuan , Ding Zhen-Bin , Zhou Jian , Fan Jia , Shi Ying-Hong
Published: July 2020

Background

The prognosis of patients with combined hepatocellular carcinoma and intrahepatic cholangiocarcinoma (CHC) is usually poor, and effective adjuvant therapy is missing making it important to investigate whether these patients may benefit from adjuvant transarterial chemoembolization (TACE). We aimed to evaluate the efficiency of adjuvant TACE for long-term recurrence and survival after curative resection before and after propensity score matching (PSM) analysis.

Methods

In this retrospective study, of 230 patients who underwent resection for CHC between January 1994 and December 2014, 46 (18.0%) patients received adjuvant TACE. Univariate and multivariate regression analyses were used to identify the independent predictive factors of survival. Cox regression analyses and log-rank tests were used to compare overall survival (OS) and disease-free survival (DFS) between patients who did or did not receive adjuvant TACE.

Results

A total of 230 patients (mean age 52.2 ± 11.9 years; 172 men) were enrolled, and 46 (mean age 52.7 ± 11.1 years; 38 men) patients received TACE. Before PSM, in multivariate regression analysis, γ-glutamyl transpeptidase (γ-GT), tumour nodularity, macrovascular invasion (MVI), lymphoid metastasis, and extrahepatic metastasis were associated with OS. Alanine aminotransferase (ALT), MVI, lymphoid metastasis, and preventive TACE (HR: 2.763, 95% CI: 1.769–4.314, p < 0.001) were independent prognostic factors for DFS. PSM created 46 pairs of patients. Before PSM, adjuvant preventive TACE was not associated with an increased risk of OS (HR: 0.911, 95% CI: 0.545–1.520, p = 0.720) or DFS (HR: 3.345, 95% CI: 1.686–6.638, p = 0.001). After PSM, the 5-year OS and DFS rates were comparable in the TACE group and the non-TACE group (OS: 22.7% vs 14.9%, respectively, p = 0.75; DFS: 11.2% vs 14.4%, respectively, p = 0.06).

Conclusions

The present study identified that adjuvant preventive TACE did not influence DFS or OS after curative resection of CHC.
‘We all have the same right to have health services’: a case study of Namati’s legal empowerment program in Mozambique
Authors: Schaaf Marta , Falcao Joana , Feinglass Ellie , Kitchell Erin , Gomes Nadja , Freedman Lynn
Published: July 2020

Background

Legal empowerment and social accountability are two strategies that are increasingly used to address gaps in healthcare in low- and middle-income countries, including failure to provide services that should be available and poor clinical and interpersonal quality of care. This paper is an explanatory case study of a legal empowerment effort that employs community paralegals and trains Village Health Committees (VHCs) in Mozambique. The research objective was to explore how community paralegals solved cases, the impact paralegals had on health services, and how their work affected the relationship between the community and the health sector at the local level.

Methods

The case study had two components: (1) a retrospective review of 24 cases of patient/community grievances about the health system, and (2) qualitative investigation of the program and program context. The case reviews were accomplished by conducting structured in-depth interviews (IDIs) with those directly involved in the case. The qualitative investigation entailed semi-structured Key Informant Interviews (KIIs) with district, provincial, and national health managers and Namati staff. In addition, focus group discussions (FGDs) were held with Health Advocates and VHC members.

Results

Case resolution conferred a sense of empowerment to clients, brought immediate, concrete improvements in health service quality at the health facilities concerned, and seemingly instigated a virtuous circle of rights-claiming. The program also engendered incipient improvements in relations between clients and the health system. We identified three key mechanisms underlying case resolution, including: bolstered administrative capacity within the health sector, reduced transaction and political costs for health providers, and provider fear of administrative sanction.

Conclusions

This study contributes to the limited literature regarding the mechanisms of legal empowerment case resolution in health systems and the impact of hybrid legal empowerment and social accountability approaches. Future research might assess the sustainability of case resolution; how governance at central, provincial, and district level is affected by similar programs; and to what extent the mix of different cases addressed by legal empowerment influences the success of the program.
Three-dimensional printing of patient-specific plates for the treatment of acetabular fractures involving quadrilateral plate disruption
Authors: Wang Canbin , Chen Yuhui , Wang Liping , Wang Di , Gu Cheng , Lin Xuezhi , Liu Han , Chen Jiahui , Wen Xiangyuan , Liu Yuancheng , Huang Fuming , Yao Lufeng , Fan Shicai , Huang Wenhua , Dong Jianghui
Published: July 2020

Background

Complicated acetabular fractures comprise the most challenging field for orthopedists. The purpose of this study was to develop three-dimensional printed patient-specific (3DPPS) Ti-6Al-4 V plates to treat complicated acetabular fractures involving quadrilateral plate (QLP) disruption and to evaluate their efficacy.

Methods

Fifty patients with acetabular fractures involving QLP disruption were selected between January 2016 and June 2017. Patients were divided into a control group (Group A, 35 patients) and an experimental group (Group B, 15 patients), and were treated by the conventional method of shaping reconstruction plates or with 3DPPS Ti-6AL-4 V plates, respectively. The efficacy of Ti-6AL-4 V plates was evaluated by blood loss, operative time, reduction quality, postoperative residual displacement, and complications.

Results

The operative time and blood loss in Group B were reduced compared to Group A, and the difference was statistically significant (P < 0.05). There was no significant difference in reduction quality between the two groups (P > 0.05). Reduction quality in Group B was anatomic in 10 (66.7%), satisfactory in four (26.7%), and poor in one (6.7%). In Group A, they were anatomic in 18 (51.4%), satisfactory in 13 (37.1%), and poor in four (11.4%). Residual displacement in Group B was less than that in Group A, and the difference was statistically significant (P < 0.05). In Group B, one case exhibited loosening of the pubic screw postoperatively. In Group A, there was one case of wound infection, one of deep vein thrombosis (DVT) in the ipsilateral lower limb, one case of traumatic arthritis and two obturator nerve injuries.

Conclusions

The 3DPPS Ti-6AL-4 V plate is a feasible, accurate and effective implant for acetabular fracture treatment.
Nurses’ attitude towards oral care and their practicing level for hospitalized patients in Orotta National Referral Hospital, Asmara-Eritrea: a cross-sectional study
Authors: Dagnew Zewdi Amanuel , Abraham Isayas Afewerki , Beraki Ghirmay Ghebreigziabher , Tesfamariam Eyasu Habte , Mittler Sibyl , Tesfamichael Yobiel Zemhret
Published: July 2020

Background

Effective and routine mouth care is necessary for hospitalized patients as it helps to maintain the health of oral cavity and overall health. However, oral care is often overlooked and not prioritized in daily activity plan of nurses even when oral problems are apparent. Therefore, the aim of this study was to assess nurses’ attitude towards oral care and their practicing level for hospitalized patients.

Methods

A cross-sectional study design was conducted in adult medical-surgical department of Orotta hospital from December 2017 to January 2018. Data was collected from all (N = 73) diploma and associate nurses through face to face interview using a pretested and structured questionnaire. Kruskal-Wallis, Mann-Whitney U tests and spearman rank correlation coefficient tools were performed to analyze the data using SPSS (Version 22).

Results

Out of the 79 participants, 73 completed the interview successfully with a response rate of 92.4%. Of the total, 56.2% were diploma nurses and 43.9% were associate nurses. The median attitude score was 68.89/100 (IQR = 48.89). The majority (94.5%) of the nurses agreed that oral cavity assessment is nurse’s responsibility and 94.5% reported adequate training is needed to provide quality oral care. On the other hand, the median practice score was 50.00/100 (IQR = 17.86). Majority of the participants (76.7%) did not perform routine oral health assessment. Almost all (98.4%) used gauze and normal saline for oral care. Practice score was significantly different across the various wards (p < 0.001), however, it was not significantly correlated with attitude (p = 0.646).

Conclusions

The participants had poor level of oral care practice to hospitalized patients, nevertheless, they had favourable attitude. Therefore, Orotta National Referral Hospital needs to give further effort to train the nursing staff, ensure the availability of adequate oral care equipment and provide clear guidelines regarding oral care of hospitalized patients.
Evaluating the effectiveness of a CRSCE-based de-escalation training program among psychiatric nurses: a study protocol for a cluster randomized controlled trial
Authors: Ye Junrong , Xiao Aixiang , Wang Chen , Xia Zhichun , Yu Lin , Li Sijue , Lin Jiankui , Liao Yao , Xu Yu , Zhang Yun Lei
Published: July 2020

Background

The high incidence of workplace violence (WPV) in clinical mental health settings has caused a series of negative impacts on nurses, which has subsequently increased public concern. De-escalation (DE) is recommended as a training program which aims at providing nurses with skills and strategies to more effectively respond and manage WPV. Very few studies have examined the effectiveness of DE training, with current studies possessing various limitations due to their design and small sample sizes. By using a cluster randomized controlled design, the proposed study aims to evaluate the effectiveness of a CRCSE-based DE training programs among psychiatric nurses.

Method

A cluster randomized controlled trial, with a 6-month follow-up period after the end of the intervention, will be conducted among psychiatric hospitals in Guangdong, China. The randomization unit is each involved psychiatric hospital. Participants in the control group will be assigned to routine WPV management training, participants of the intervention group will undergo the same training while additionally receiving DE training. The DE training will include the following five modules: communication, response, solution, care, and environment (CRSCE). Primary outcomes are objective clinical indicators, which will be extracted from the information systems of the enrolled hospitals. These include the incidence of WPV, injuries caused by WPV, and the use of coercion (physical restraint and seclusion) by nurses. Secondary outcomes, aims at evaluating the effects of DE training on nurses, include the capacity of DE, DE confidence, level of job burnout, and professional quality of life. Data will be collected at baseline (T0), at 3 months (T1, intervention completed), and at 6 months after intervention (T2, follow-up).

Discussion

This study will offer trial-based evidence of the efficacy of a DE training program targeted at WPV among psychiatric nurses. DE training is expected to reduce both the total incidence and negative impacts of WPV, with additional improvements in psychiatric nurses’ coping skills.

Trial registration

Chinese Clinical Trial Registry, ChiCTR1900022211. Prospectively registered on 30 March 2019.
Circ_0000527 promotes the progression of retinoblastoma by regulating miR-646/LRP6 axis
Authors: Zhang Li , Wu Jie , Li Yujun , Jiang Yanxia , Wang Lili , Chen Yunqing , Lv Yalin , Zou Yuwei , Ding Xiaoyan
Published: July 2020

Background

Researches validate that circular RNAs (circRNAs) are dysregulated in a variety of malignancies and play an important role in regulating the malignant phenotype of tumor cells. Nevertheless, the role of circ_0000527 in retinoblastoma (RB) and its regulatory mechanisms remain largely unknown.

Methods

Real-time PCR (RT-PCR) was used to detect circ_0000527 and miR-646 expression in RB tissues and cells. The LRP6 expression in RB cells was detected by Western blot. The relationship between circ_0000527 expression and the clinicopathological parameters of RB patients was analyzed. Cell proliferation, apoptosis and metastasis were monitored by cell counting kit-8 (CCK-8), flow cytometry, and Transwell assay. The dual-luciferase reporter gene assay and RIP assay were employed to verify the targeting relationship between circ_0000527 and miR-646, miR-646 and LRP6.

Results

Circ_0000527 was highly expressed in both RB and RB cell lines, whose high expression level and degree of differentiation were significantly correlated with the increase in cTNM staging level. Overexpression of circ_0000527 contributed to RB cell proliferation, migration, invasion and suppressed cell apoptosis, while knocking down circ_0000527 inhibited the above malignant biological behavior. The underlying mechanism suggested that functioning as a endogenous competitive RNA, circ_0000527 directly targeted miR-646 and positively regulated LRP6 expression.

Conclusion

Circ_0000527 enhances the proliferation and metastasis of RB cells by modulating the miR-646/LRP6 axis.
Consumption of non-nutritive sweeteners by pre-schoolers of the food and environment Chilean cohort (FECHIC) before the implementation of the Chilean food labelling and advertising law
Authors: Venegas Hargous Carolina , Reyes Marcela , Smith Taillie Lindsey , González Carmen Gloria , Corvalán Camila
Published: July 2020

Background

Consumption of non-nutritive sweeteners (NNS) is becoming increasingly more frequent, particularly in the context of obesity prevention policies. The aim of this study was to describe the consumption of NNS in an ongoing cohort of pre-schoolers (4–6-year-old) before the implementation of the Chilean Food Labelling and Advertising Law, identify sociodemographic and anthropometric characteristics associated with their consumption, and describe the main dietary sources of each NNS sub-type.

Methods

In 959 low-medium income pre-schoolers from the Food and Environment Chilean Cohort (FECHIC), dietary data from a single 24-h recall was linked to NNS content information obtained from packaged foods (n = 12,233). The prevalence of NNS consumption was estimated by food source and characterized by child and maternal sociodemographic and anthropometric variables. Intakes and main dietary sources were described for the six most prevalent NNS in Chile: Sodium Cyclamate, Saccharin, Aspartame, Acesulfame Potassium, Sucralose, and Steviol glycosides.

Results

Sixty-eight percent of the pre-schoolers consumed at least one source of NNS on the day of the dietary recall; most of them consumed NNS from foods and beverages (n = 532), while only 12% (n = 119) also consumed table-top sweeteners. The prevalence of NNS consumption was significantly higher among children whose mothers had a high educational level compared to children whose mothers did not complete high school (p < 0.05); however, it did not differ by any other variable studied. The highest intakes of NNS were observed for Aspartame [2.5 (1.4–3.7) mg/kg per consumer], followed by Sodium Cyclamate [1.6 (1.3–2.6) mg/kg per consumer] and Steviol glycosides [1.2 (0.2–2.1) mg/kg per consumer]. Beverages were the only food group that contributed to the intake of the six NNS studied, accounting for 22% of the overall intake of Saccharine and up to 99% of Aspartame intake.

Conclusions

Before the implementation of the Food Labelling and Advertising Law, NNS consumption was highly prevalent among a cohort of low-middle income Chilean pre-schoolers. Continuous monitoring of NNS consumption is essential given potential food reformulation associated with the implementation of this set of obesity-prevention policies.
Assessing the psychometric properties of the French WHOQOL-HIV BREF within the ANRS CO3 Aquitaine Cohort’s QuAliV ancillary study
Authors: Barger Diana , Hessamfar Mojgan , Neau Didier , Vareil Marc-Olivier , Lazaro Estibaliz , Duffau Pierre , Rouanes Nicolas , Leleux Olivier , Le Marec Fabien , Erramouspe Marie , Wittkop Linda , Dabis François , Bonnet Fabrice
Published: July 2020

Background

Antiretroviral therapy has prolonged the lives of those with human immunodeficiency virus (HIV), but the effects of chronic infection on their health-related quality of life (HRQoL) remain a concern. Numerous instruments have been developed to measure HRQoL, yet evidence of their cross-cultural equivalence and continued applicability is limited. We adapted the WHOQOL-HIV BREF to French and assessed its psychometric properties in a sample of community-dwelling adults living with HIV who were mostly virally suppressed.

Methods

We conducted a cross-sectional study within the ANRS CO3 Aquitaine cohort from July 2018 to May 2019. Five hundred eighty-six participants were consecutively enrolled at their HIV-consultations and completed either a web-based (n = 406) or paper self-administered assessment (n = 180). The means and standard deviations for items and domains were computed and the presence of floor and ceiling effects assessed. We evaluated internal consistency by calculating Cronbach’s alpha coefficients per domain. We assessed construct validity by performing a Confirmatory Factor Analysis (CFA). Concurrent, convergent and discriminant validity were assessed with Pearson’s correlations and known-group validity was assessed according to CD4 cell count, viral load, Centers for Disease Control and Prevention clinical categories for HIV, and hospitalization of more than 48 h within 2 years of the most recent consultation using one-way analysis of variance and independent t-tests.

Results

Five hundred eighty-six PLWH were included in this analysis. Their median age was 55; 73% were male; 85% were of French descent; 99% were on ART and 93% were virally suppressed. We found floor effects for one and ceiling effects for 11 items. Four of the six domains showed good internal consistency (α range: 0.63–0.79). CFA showed that the WHOQOL-HIV BREF’s six-domain structure produced an acceptable fit (SRMR = 0.059; CFI = 0.834; RMSEA = 0.07; 90% CI: 0.06–0.08). It showed good concurrent, convergent and discriminant validity. There was some evidence of known-group validity. The personal beliefs domain had the highest score (15.04 ± 3.35) and the psychological health domain had the lowest (13.70 ± 2.78).

Conclusions

The French WHOQOL-HIV BREF has acceptable measurement properties. Its broad conceptualisation of HRQoL, going beyond physical and mental health, may be of particular value in our older, treatment-experienced and virally suppressed population.

Trial registration

ClinicalTrials.gov NCT03296202 (Archived by WebCite at http://www.webcitation.org/6zgOBArps).
The mediating role of perceived social support between anxiety symptoms and life satisfaction in pregnant women: a cross-sectional study
Authors: Yu Mingli , Qiu Tian , Liu Chunli , Cui Qi , Wu Hui
Published: July 2020

Background

Pregnancy can be stressful for women and families, so the life satisfaction of pregnant women may face significant challenges. This study aimed to identify the relationship among anxiety symptoms, perceived social support and life satisfaction, and to further explore whether perceived social support can play a mediating role.

Methods

This cross-sectional study was conducted from June to September in Shenyang City, China in 2019. 290 effective questionnaires were collected. The Satisfaction with Life Scale (SWLS), the Zung’s Self-Rating Anxiety Scale (SAS), the Multi-Dimensional Scale of Perceived Social Support (MSPSS) as well as demographic variables were included in each questionnaire. Hierarchical multiple regression was conducted to explore the mediating role of perceived social support in the relationship between anxiety symptoms and life satisfaction. Then the mediation model was examined by the PROCESS macro for SPSS.

Results

After adjusting control variables, anxiety symptoms were negatively associated with life satisfaction and explained 14.7% of the variance. Higher level of perceived social support was related to higher level of life satisfaction, explaining 21.0% of the variance. Perceived social support partly mediated the relationship between anxiety symptoms and life satisfaction for pregnant women.

Conclusions

Perceived social support played a mediating role between anxiety symptoms and life satisfaction among pregnant women. Strategies and measures to improve perceived social support may be expected to buffer the impact of anxiety symptoms on pregnant women’s life satisfaction.
Energetics and IC50 based epitope screening in SARS CoV-2 (COVID 19) spike protein by immunoinformatic analysis implicating for a suitable vaccine development
Authors: Banerjee Amrita , Santra Dipannita , Maiti Smarajit
Published: July 2020

Background

The recent outbreak by SARS-CoV-2 has generated a chaos in global health and economy and claimed/infected a large number of lives. Closely resembling with SARS CoV, the present strain has manifested exceptionally higher degree of spreadability, virulence and stability possibly due to some unidentified mutations. The viral spike glycoprotein is very likely to interact with host Angiotensin-Converting Enzyme 2 (ACE2) and transmits its genetic materials and hijacks host machinery with extreme fidelity for self propagation. Few attempts have been made to develop a suitable vaccine or ACE2 blocker or virus-receptor inhibitor within this short period of time.

Methods

Here, attempt was taken to develop some therapeutic and vaccination strategies with a comparison of spike glycoproteins among SARS-CoV, MERS-CoV and the SARS-CoV-2. We verified their structure quality (SWISS-MODEL, Phyre2, and Pymol) topology (ProFunc), motifs (MEME Suite, GLAM2Scan), gene ontology based conserved domain (InterPro database) and screened several epitopes (SVMTrip) of SARS CoV-2 based on their energetics, IC50 and antigenicity with regard to their possible glycosylation and MHC/paratope binding (Vaxigen v2.0, HawkDock, ZDOCK Server) effects.

Results

We screened here few pairs of spike protein epitopic regions and selected their energetic, Inhibitory Concentration50 (IC50), MHC II reactivity and found some of those to be very good target for vaccination. A possible role of glycosylation on epitopic region showed profound effects on epitopic recognition.

Conclusion

The present work might be helpful for the urgent development of a suitable vaccination regimen against SARS CoV-2.
Cross validated serum small extracellular vesicle microRNAs for the detection of oropharyngeal squamous cell carcinoma
Authors: Mayne G. C. , Woods C. M. , Dharmawardana N. , Wang T. , Krishnan S. , Hodge J. C. , Foreman A. , Boase S. , Carney A. S. , Sigston E. A. W. , Watson D. I. , Ooi E. H. , Hussey D. J.
Published: July 2020

Background

Oropharyngeal squamous cell carcinoma (OPSCC) is often diagnosed at an advanced stage because the disease often causes minimal symptoms other than metastasis to neck lymph nodes. Better tools are required to assist with the early detection of OPSCC. MicroRNAs (miRNAs, miRs) are potential biomarkers for early head and neck squamous cell cancer diagnosis, prognosis, recurrence, and presence of metastatic disease. However, there is no widespread agreement on a panel of miRNAs with clinically meaningful utility for head and neck squamous cell cancers. This could be due to variations in the collection, storage, pre-processing, and isolation of RNA, but several reports have indicated that the selection and reproducibility of biomarkers has been widely affected by the methods used for data analysis. The primary analysis issues appear to be model overfitting and the incorrect application of statistical techniques. The purpose of this study was to develop a robust statistical approach to identify a miRNA signature that can distinguish controls and patients with inflammatory disease from patients with human papilloma virus positive (HPV +) OPSCC.

Methods

Small extracellular vesicles were harvested from the serum of 20 control patients, 20 patients with gastroesophageal reflux disease (GORD), and 40 patients with locally advanced HPV + OPSCC. MicroRNAs were purified, and expression profiled on OpenArray™. A novel cross validation method, using lasso regression, was developed to stabilise selection of miRNAs for inclusion in a prediction model. The method, named StaVarSel (for Stable Variable Selection), was used to derive a diagnostic biomarker signature.

Results

A standard cross validation approach was unable to produce a biomarker signature with good cross validated predictive capacity. In contrast, StaVarSel produced a regression model containing 11 miRNA ratios with potential clinical utility. Sample permutations indicated that the estimated cross validated prediction accuracy of the 11-miR-ratio model was not due to chance alone.

Conclusions

We developed a novel method, StaVarSel, that was able to identify a panel of miRNAs, present in small extracellular vesicles derived from blood serum, that robustly cross validated as a biomarker for the detection of HPV + OPSCC. This approach could be used to derive diagnostic biomarkers of other head and neck cancers.
Adenosine deaminase 2 activity negatively correlates with age during childhood
Authors: Bowers Sarah M. , Gibson Kristen M. , Cabral David A. , Brown Kelly L.
Published: July 2020

Background

Human adenosine deaminase 2 (ADA2) is an extracellular enzyme that negatively regulates adenosine-mediated cell signaling by converting adenosine to inosine. Altered ADA2 enzyme activity has been associated with some viral infections and rheumatic diseases. The potential utility of ADA2 as a biomarker is, however, limited by the absence of established ranges of ADA2 concentration and enzyme activity in the healthy population. It is known that ADA2 enzyme activity is lower in adults, but when (and why) this decline happens is not known. The purpose of this study was to establish normative ranges of ADA2 enzyme activity and protein concentration in the healthy pediatric population.

Methods

We modified a commercially available ADA2 enzyme activity assay to enable higher throughput analysis of fresh, frozen and hemolyzed blood samples. With this assay and ADA2 protein immunoblotting, we analyzed ADA2 enzyme activity and protein concentration in blood plasma from a cohort of children and adolescents (n = 94) aged 5 months to 18 years. One-way ANOVA with subsequent Tukey multiple comparison test was used to analyze group differences. Reference intervals were generated using the central 95% of the population (2–97.5 percentiles).

Results

ADA2 enzyme activity was consistent in fresh, frozen, and hemolyzed sera and plasma as measured by our modified assay. Analysis of plasma samples from the healthy pediatric cohort revealed that ADA2 enzyme activity is significantly lower in older children than in younger children (p < 0.0001). In contrast, there was no significant correlation between ADA2 protein concentration and either age or ADA2 enzyme activity.

Conclusion

We observed that ADA2 enzyme activity, but not ADA2 protein concentration, negatively correlates with age in a cohort of children and adolescents. Our findings stress the importance of appropriate age-matched controls for assessing ADA2 enzyme activity in the clinical setting.
Factors associated with intimacy and sexuality among young women with multiple sclerosis
Authors: Mohammadi Khadijeh , Rahnama Parvin , Rafei Zahra , Ebrahimi-Aveh Seyedeh Mitra , Montazeri Ali
Published: July 2020

Background

Patients with multiple sclerosis (MS) especially those with younger age experience an alteration in physiological and emotional lifestyle that can affect intimacy and sexuality. The aim of this study was to determine demographic and disease related determinants of intimacy and sexuality in young women with MS.

Methods

This was a cross sectional study carried out in Tehran, Iran. A convenience sample of young women aged ≤35 years old with MS attending to outpatient clinics in a teaching hospital affiliated to Tehran University of Medical Sciences was entered into the study. The Multiple Sclerosis Intimacy and Sexuality Questionnaire-19 (MSISQ-19) was used to evaluate how the disease influences sexual function and satisfaction in these patients. Multivariable analysis using hierarchical method was performed to identify variables that are associated with intimacy and sexuality.

Results

In total 117 young women with confirmed diagnosis of MS were included in the study. Participants mean was 25.7 (SD = 8.07) years. A multivariable hierarchical regression analysis was performed using demographic variables entered in step one, relevant neurological variables in step two, and psychological variables in step three. Furthermore, we loaded antidepressant use in the last step. Overall, the seven variables accounted for 39% of total variance observed for the MSISQ score (P < 0.001). At step one the demographic variables accounted for 13% of the variance in the MSISQ score (P < 0.001). At step two the inclusion of relevant neurological variables increased the R2 significantly and explained 27% of variance for the MSISQ (P < 0.001). However in the third step the inclusion of psychological factors increased R2 significantly (adjusted R2 increased to 0.39, P < 0.001).

Conclusions

The findings indicated that psychological, disease-related and demographic factors (education and employment status) contributed to intimacy and sexuality in young women with multiple sclerosis. Appropriate interventions, especially psychological interventions, appear to be essential immediately following a definite MS diagnosis in young women.