bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inter-observer and intra-observer reliability of the myopic traction maculopathy staging system
Authors: Frisina Rino , Besozzi Gianluca , Finzi Alessandro , Pinackatt Sajish Joseph , Palmieri Michele , Parolini Barbara 
Published: June 2021

Aim: The aim of this study is to evaluate the inter-observer and intra-observer agreement of the myopic traction maculopathy (MTM) staging system (MSS). Methods: The agreement test for MSS was based on the evaluation of 104 optical coherence tomography (OCT) scans from 104 myopic eyes. According to the MSS, six observers were asked to identify, in each image, one among four retinal patterns and one among three foveal patterns of MTM, the presence of an outer lamellar macular hole (OLMH) and an epiretinal membrane (ERM). Each observer repeated the agreement test after a 60 days interval. Results: Inter-observer reliability: the agreement of the test for the retina pattern was substantial (0.724), for the fovea pattern was 0.821, for the OLMH was 0.656, and for the ERM was 0.463. When all the criteria are included in the validation test the agreement was 0.657. Regarding the weighted statistics (Gwet’s AC2, 95% CI), the validation test was statistically significant both when the variables were considered one by one, with an excellent agreement, respectively for the retina pattern (0.955) and the fovea pattern (0.963) and when all the variables were included in the tests (0.930). Intra-observer repeatability: all observers rerun the test after 2 months with a statistically significant percentage of confirmation of the previous test. Conclusion: The MSS offers in one Table information on diagnosis, natural history, function, prognosis, and management of MTM. The MSS is user-friendly and highly reproducible.
Ultrasound guidance versus conventional technique for radial artery puncture in septic shock patients: A pilot study
Authors: Seyhan Avni Uygar , Ak Rohat 
Published: June 2021

Background: Arterial puncture, for obtaining an analysis of blood gas, is an interventional procedure often performed in emergency departments and intensive care units. This study compares the ultrasound (US) guided method with the conventional digital palpation method in radial artery puncture (RAP) for blood gas analysis in septic shock patients. Methods: This is a prospective, single-centre study. Septic shock patients over 18 years of age who needed a RAP sample for blood gas analysis were included. Patients with local infection or trauma at the puncture site, arteriovenous fistula, vascular graft, coagulopathy, a positive Allen test, or did not want to participate were excluded. Patients were randomized into two groups and RAP was obtained with either the US-guided method or the conventional method. The main outcomes were success at first entry, the number of attempts before success, and the time to success. Results: The 50 eligible patients were randomized into two groups. First entry success rate for the US-guided group and the conventional group was 80% and 42%, respectively. The number of attempts before success and time to success was significantly higher in the conventional group. Conclusion: The US-guided method has been found to be more successful in terms of first entry success, the number of attempts before success, and the time to success when compared to the conventional method.
Madelung Deformity: Radioscapholunate Arthrodesis With a Neo-DRUJ
Authors: Piek Annelinde R. , Peymani Abbas , Dobbe Johannes G. G. , Buijze Geert A. , Chammas Michel , Streekstra Geert J. , Strackee Simon D. 
Published: June 2021

Background Madelung deformity is a rare wrist anomaly that causes considerable pain while restricting function. In this study, we describe a radioscapholunate (RSL) arthrodesis with a neo-distal radioulnar joint (DRUJ) in Madelung deformity patients with an abnormal sigmoid notch and compare results to patients after a reverse wedge osteotomy. Methods Six wrists underwent RSL arthrodesis with a neo-DRUJ in a two-phase approach: (1) modified RSL arthrodesis with triquetrectomy; and (2) distal scaphoidectomy. Seven wrists underwent a reverse wedge osteotomy procedure. Results There were no differences found in postoperative pain, grip strength, or range of motion (ROM), apart from extension, which was decreased after RSL arthrodesis with a neo-DRUJ. Quality of life and Michigan Hand Outcomes Questionnaire scores were similar. Conclusions Although clinical outcome parameters are not different among the two groups, the RSL arthrodesis with construction of a neo-DRUJ could prove a valid treatment option for a subset of patients with a severely affected sigmoid notch.
Sleep Disturbances in Individuals Quarantined Due to SARS-CoV-2 Pandemic in Poland: A Mixed Methods Design Study
Authors: Krupa Sabina , Paweł Witt , Mędrzycka-Dąbrowska Wioletta , Lintowska Agnieszka , Ozga Dorota 
Published: June 2021

Objectives The study aimed to assess sleep disturbances in patients subjected to home quarantine due to suspected SARS-CoV-2 infection. The study used a mixed methods design study as a research methodology. Methods A semi-structured interview and the scale for Insomnia Severity Index (ISI) were used to achieve the aim of the study. The survey was conducted from 16 to 20 April 2020 and 1 to 2 September 2020 in Poland, at the during of SARS-CoV-2 epidemic in this country. The data were coded and cross-processed. The (COREQ) checklist was followed. Results Interviews with patients and a thorough analysis of recordings revealed commonly used phrases in the following categories: “anxiety”, “ Am I going crazy?”, “Sleep problems”. 10 out of 11 respondents reported sleep disorders of varying severity according to the Insomnia Severity Index scale. Patients presented a fear related to the return to society and normal functioning after quarantine. Additionally, some study participants voiced concerns related to their mental health; some cases of hallucinations were reported. Conclusions Further global population studies should be conducted to analyse this phenomenon. Acute Stress Disorder should be understood as a threat to life and health of an isolated society in quarantine. Further research in this area should be promoted and the need for global guidelines for the entire population should be developed.
EpoR-tdTomato-Cre mice enable identification of EpoR expression in subsets of tissue macrophages and hematopoietic cells
Authors: Zhang Huan , Wang Shihui , Liu Donghao , Gao Chengjie , Han Yongshuai , Guo Xinhua , Qu Xiaoli , Li Wei , Zhang Shijie , Geng Jingyu , Zhang Linlin , Mendelson Avital , Yazdanbakhsh Karina , Chen Lixiang , An Xiuli 
Published: June 2021

Abstract
The erythropoietin receptor (EpoR) has traditionally been thought of as an erythroid-specific gene. Notably, accumulating evidence suggests that EpoR is expressed well beyond erythroid cells. However, the expression of EpoR in non-erythroid cells has been controversial. In this study, we generated EpoR-tdTomato-Cre mice and used them to examine the expression of EpoR in tissue macrophages and hematopoietic cells. We show that in marked contrast to the previously available EpoR-eGFPcre mice, in which a very weak eGFP signal was detected in erythroid cells, tdTomato was readily detectable in both fetal liver (FL) and bone marrow (BM) erythroid cells at all developmental stages and exhibited dynamic changes during erythropoiesis. Consistent with our recent finding that erythroblastic island (EBI) macrophages are characterized by the expression of EpoR, tdTomato was readily detected in both FL and BM EBI macrophages. Moreover, tdTomato was also detected in subsets of hematopoietic stem cells, progenitors, megakaryocytes, and B cells in BM as well as in spleen red pulp macrophages and liver Kupffer cells. The expression of EpoR was further shown by the EpoR-tdTomato-Cre–mediated excision of the floxed STOP sequence. Importantly, EPO injection selectively promoted proliferation of the EpoR-expressing cells and induced erythroid lineage bias during hematopoiesis. Our findings imply broad roles for EPO/EpoR in hematopoiesis that warrant further investigation. The EpoR-tdTomato-Cre mouse line provides a powerful tool to facilitate future studies on EpoR expression and regulation in various non-hematopoietic cells and to conditionally manipulate gene expression in EpoR-expressing cells for functional studies.
Dispersal and mating patterns determine the fate of naturally dispersed populations: evidence from Bombina orientalis
Authors: Yu Liqun , Zhao Shuai , Meng Fanbing , Shi Yanshuang , Xu Chunzhu 
Published: June 2021

Abstract
Background
In contrast to the explosive increase of a population following biological invasion, natural dispersal, i.e., when a population disperses from its original range into a new range, is a passive process that is affected by resources, the environment, and other factors. Natural dispersal is also negatively impacted by genetic drift and the founder effect. Although the fates of naturally dispersed populations are unknown, they can adapt evolutionarily over time to the new environment. Can naturally dispersed populations evolve beneficial adaptive strategies to offset these negative effects to maintain their population in a stable state?

Results
The current study addressed this question by focusing on the toad Bombina orientalis, the population of which underwent natural dispersal following the Last Glacial Maximum in Northeast Asia. Population genetic approaches were used to determine the genetic structure, dispersal pattern, and mating system of the population of B. orientalis in northeast China (Northern population). The results showed that this northern population of B. orientalis is a typical naturally dispersed population, in which the stable genetic structure and high level of genetic diversity of the population have been maintained through the long-distance biased dispersal behavior of males and the pattern of promiscuity within the population.

Conclusions
Our findings suggest that naturally dispersed populations can evolve effective adaptive strategies to maintain a stable population. Different species may have different strategies. The relevance of these maintenance mechanisms for naturally dispersed populations provide a new perspective for further understanding the processes of speciation and evolution.
Genome-wide characterization of microsatellite DNA in fishes: survey and analysis of their abundance and frequency in genome-specific regions
Authors: Lei Yi , Zhou Yu , Price Megan , Song Zhaobin 
Published: June 2021

AbstractBackgroundMicrosatellite repeats are ubiquitous in organism genomes and play an important role in the chromatin organization, regulation of gene activity, recombination and DNA replication. Although microsatellite distribution patterns have been studied in most phylogenetic lineages, they are unclear in fish species.ResultsHere, we present the first systematic examination of microsatellite distribution in coding and non-coding regions of 14 fish genomes. Our study showed that the number and type of microsatellites displayed nonrandom distribution for both intragenic and intergenic regions, suggesting that they have potential roles in transcriptional or translational regulation and DNA replication slippage theories alone were insufficient to explain the distribution patterns. Our results showed that microsatellites are dominant in non-coding regions. The total number of microsatellites ranged from 78,378 to 1,012,084, and the relative density varied from 4925.76 bp/Mb to 25,401.97 bp/Mb. Overall, (A + T)-rich repeats were dominant. The dependence of repeat abundance on the length of the repeated unit (1–6 nt) showed a great similarity decrease, whereas more tri-nucleotide repeats were found in exonic regions than tetra-nucleotide repeats of most species. Moreover, the incidence of different repeated types appeared species- and genomic-specific. These results highlight potential mechanisms for maintaining microsatellite distribution, such as selective forces and mismatch repair systems.ConclusionsOur data could be beneficial for the studies of genome evolution and microsatellite DNA evolutionary dynamics, and facilitate the exploration of microsatellites structural, function, composition mode and molecular markers development in these species.
Creatinine-lactate score predicts mortality in non-acetaminophen-induced acute liver failure in patients listed for liver transplantation
Authors: Figueira Estela Regina Ramos , Rocha-Filho Joel Avancini , Lanchotte Cinthia , Nacif Lucas Souto , de Paiva Haddad Luciana Bertocco , Assalin Adriana Rochetto , Shinkado Yumi Ricucci , Vintimilla Agustin Moscoso , Galvao Flavio Henrique Ferreira , D’Albuquerque Luiz Augusto Carneiro 
Published: June 2021

AbstractBackgroundThe aim of this study was to analyze prognostic indicators of in-hospital mortality among patients listed for urgent liver transplantation (LT) for non-acetaminophen (APAP)-induced acute liver failure (ALF).MethodsALF patients listed for LT according to the King’s College Criteria were retrospectively reviewed. Variables were recorded from medical records and electronic databases (HCMED and RedCap).ResultsThe study included 100 patients, of which 69 were subject to LT and 31 died while waiting for LT. Patients were 35.5 ± 14.73 years old, and 78% were females. The main etiologies were virus (17%), drug-induced (32%), autoimmune (15%), and indeterminate hepatitis (31%). The prioritization-to-LT time interval was 1.5 days (0–9). The non-LT patients showed higher lactate (8.71 ± 5.36 vs. 4.48 ± 3.33 mmol/L), creatinine (229 ± 207 vs. 137 ± 136 µm/L), MELD (44 ± 8 vs. 38 ± 8), and BiLE scores (15.8 ± 5.5 vs. 10.3 ± 4.1) compared to LT patients (p < 0.05). Multiple logistic regression analysis identified creatinine and lactate as independent prognostic factors, and a creatinine-lactate (CL) score was developed. ROC analysis showed that creatinine, lactate, MELD, BiLE, and CL scores had considerable specificity (71–88%), but only BiLE, lactate, and CL presented high sensitivities (70%, 80%, and 87% respectively). AUCs were 0.696 for creatinine, 0.763 for lactate, 0.697 for MELD, 0.814 for BiLE, and 0.835 for CL.ConclusionsCL and BiLE scores predict mortality with more accuracy than MELD in patients with ALF during prioritization time. Creatinine and lactate are independent prognostic factors for mortality.
Fear of falling is as important as multiple previous falls in terms of limiting daily activities: a longitudinal study
Authors: Liu Minhui , Hou Tianxue , Li Yuxiao , Sun Xiaocao , Szanton Sarah L. , Clemson Lindy , Davidson Patricia M. 
Published: June 2021

Abstract
Background
Fear of falling and previous falls are both risk factors that affect daily activities of older adults. However, it remains unclear whether they independently limit daily activities accounting for each other.

Methods
We used the data from Round 1 (Year 1) to Round 5 (Year 5) of the National Health and Aging Trends Study. We included a total of 864 community-dwelling participants who provided data on previous falls, fear of falling and limited activities from Year 1 to Year 5 and had no limited daily activities at Year 1 in this study. Previous falls and fear of falling were ascertained by asking participants how many falls they had in the past year and whether they had worried about falling in the last month. Limited daily activities included any difficulties with mobility (e.g., going outside), self-care (e.g., eating), and household activities (e.g., laundering). Generalized estimation equation models were used to examine whether previous falls and fear of falling independently predicted development of limited daily activities adjusting covariates.

Results
Participants were mainly between 65 and 79 years old (83 %), male (57 %), and non-Hispanic White (79 %). Among participants who had multiple falls in Year 1, 19.1-31 %, 21.4-52.4 %, and 11.9-35.7 % developed limitations in mobility, self-care, and household activities during Year 2 to Year 5, respectively. Among those who had fear of falling in Year 1, 22.5-41.3 %, 30.0-55.0 %, and 18.8-36.3 % developed limitations in mobility, self-care, and household activities during Year 2 to Year 4, respectively. Fear of falling independently predicted limitations in mobility (Incidence rate ratio [IRR]: 1.79, 95 % CI: 1.44, 2.24), self-care (IRR: 1.25, 95 % CI: 1.08, 1.44) and household activities (IRR: 1.39, 95 % CI: 1.08, 1.78) after adjusting for previous falls and covariates. Multiple previous falls independently predicted limitations in mobility (IRR: 1.72, 1.30, 2.27), self-care (IRR: 1.40, 95 % CI: 1.19, 1.66) and household activities (IRR: 1.36, 95 % CI: 1.01, 1.83) after adjusting fear of falling and covariates.

Conclusions
Fear of falling seems to be as important as multiple previous falls in terms of limiting older adults’ daily activities.
Pathogenesis-based preexposure prophylaxis associated with a low risk of SARS-CoV-2 infection in healthcare workers at a designated COVID-19 hospital: a pilot study
Authors: Dubina Michael V. , Gomonova Veronika V. , Taraskina Anastasia E. , Vasilyeva Natalia V. , Sayganov Sergey A. 
Published: June 2021

Abstract
Background
At present, no agents are known to be effective at preventing COVID-19. Based on current knowledge of the pathogenesis of this disease, we suggest that SARS-CoV-2 infection might be attenuated by directly maintaining innate pulmonary redox, metabolic and dilation functions using well-tolerated medications that are known to serve these functions, specifically, a low-dose aerosolized combination of glutathione, inosine and potassium.

Methods
From June 1 to July 10, 2020, we conducted a pilot, prospective, open-label, single-arm, single-center study to evaluate the safety and efficacy of preexposure prophylaxis (PrEP) with aerosolized combination medication (ACM) on the incidence of SARS-CoV-2 positivity in 99 healthcare workers (HCWs) at a hospital designated for treating COVID-19 patients. We compared SARS-CoV-2 positivity in ACM users to retrospective data collected from 268 untreated HCWs at the same hospital. Eligible participants received an aerosolized combination of 21.3 mg/ml glutathione and 8.7 mg/ml inosine in 107 mM potassium solution for 14 days. The main outcome was the frequency of laboratory-confirmed SARS-CoV-2 cases, defined as individuals with positive genetic or immunological tests within 28 days of the study period.

Results
SARS-CoV-2 was detected in 2 ACM users (2, 95% CI: 0.3 to 7.1%), which was significantly less than the incidence in nonusers, at 24 (9, 95% CI: 5.8 to 13.0%; P = 0.02). During the PrEP period, solicited adverse events occurred in five participants; all were mild and transient reactions.

Conclusions
Our findings might be used either to prevent SARS-CoV-2 infection or to support ongoing and new research into more effective treatments for COVID-19.

Trial registration
ISRCTN, ISRCTN34160010. Registered 14 September 2020 - Retrospectively registered.
Assessment of safety margin after microwave ablation of stage I NSCLC with three-dimensional reconstruction technique using CT imaging
Authors: Yan Peng , Tong An-na , Nie Xiu-li , Ma Min-ge 
Published: June 2021

Abstract
Objective
To assess the ablative margin of microwave ablation (MWA) for stage I non-small cell lung cancer (NSCLC) using a three-dimensional (3D) reconstruction technique.

Materials and methods
We retrospectively analyzed 36 patients with stage I NSCLC lesions undergoing MWA and analyzed the relationship between minimal ablative margin and the local tumor progression (LTP) interval, the distant metastasis interval and disease-free survival (DFS). The minimal ablative margin was measured using the fusion of 3D computed tomography reconstruction technique.

Results
Univariate and multivariate analyses indicated that tumor size (hazard ratio [HR] = 1.91, P < 0.01; HR = 2.41, P = 0.01) and minimal ablative margin (HR = 0.13, P < 0.01; HR = 0.11, P < 0.01) were independent prognostic factors for the LTP interval. Tumor size (HR = 1.96, P < 0.01; HR = 2.35, P < 0.01) and minimal ablative margin (HR = 0.17, P < 0.01; HR = 0.13, P < 0.01) were independent prognostic factors for DFS by univariate and multivariate analyses. In the group with a minimal ablative margin < 5 mm, the 1-year and 2-year local progression-free rates were 35.7% and 15.9%, respectively. The 1-year and 2-year distant metastasis-free rates were 75.6% and 75.6%, respectively; the 1-year and 2-year disease-free survival rates were 16.7% and 11.1%, respectively. In the group with a minimal ablative margin ≥ 5 mm, the 1-year and 2-year local progression-free rates were 88.9% and 69.4%, respectively. The 1-year and 2-year distant metastasis-free rates were 94.4% and 86.6%, respectively; the 1-year and 2-year disease-free survival rates were 88.9% and 63.7%, respectively. The feasibility of 3D quantitative analysis of the ablative margins after MWA for NSCLC has been validated.

Conclusions
The minimal ablative margin is an independent factor of NSCLC relapse after MWA, and the fusion of 3D reconstruction technique can feasibly assess the minimal ablative margin.
Prevalence and correlates of malnutrition among hemodialysis patients at hebron governmental hospital, Palestine: cross-sectional study
Authors: Badrasawi Manal , Zidan Souzan , Sharif Israa , Qaisiyha Juliana , Ewaida Sanabel , Jaradat Tala , Samamra Yasmeen 
Published: June 2021

Abstract
Background
Malnutrition is a usually observed condition among patients on hemodialysis and is considered one of sturdiest indicators of mortality and morbidity.

Objectives
The current study was performed to assess the prevalence of malnutrition, to verify whether functional status is associated with malnutrition, and to explore the probable factors related to malnutrition among a sample of hemodialysis patients at Hebron Governmental Hospital in West Bank, Palestine.

Methods
A cross-sectional study was conducted on hemodialysis patients in Hebron Governmental Hospital at Hebron city/Palestine. An interview-based questionnaire was used to obtain information related to socio-demographics, dialysis, medical history, lifestyle, anthropometric measurements, dietary data, and functional status. Renal inpatient screening tool (renal iNUT) was also utilized to screen hemodialysis patients for malnutrition. Furthermore, biochemical tests were obtained during the study period from medical files of the studied patients.

Results
A total of 153 patients, having a mean age of 50.1 ± 16.6 years, were involved in the final analysis. The results indicated that the prevalence of high risk of malnutrition (45.4 %). Moreover, high risk of malnutrition was significantly associated with occupation, and walking. It was further found that patients with high risk of malnutrition are more likely to had osteoporosis, unable to ambulate, didn’t feel that the amount of food they eat is enough. Our findings also figured out that some complications during hemodialysis session (e.g., headache, nausea, hypotension) and some hemodialysis side effects (e.g., itching, access site complication) were significantly correlated to malnutrition.

Conclusions
A high prevalence of malnutrition was revealed among hemodialysis using renal iNUT screening tool. Improving nutritional assessment methods for patients on hemodialysis is highly needed. Findings reveals that risk of malnutrition is associated with multiple factors such as osteoporosis, occupation, walking, ability to ambulate, certain complication during hemodialysis session, and some hemodialysis side effects. Further studies are highly recommended.