bluuebunny/crossref_metadata_2025_split huggingface dataset:
Supracricoid Partial Laryngectomy: Oncological and Functional Outcomes
Authors: Mesolella Massimo , Iorio Brigida , Buono Sarah , Cimmino Mariano , Motta Gaetano 
Published: July 2021

Abstract
Introduction In the present study, we have reviewed the outcomes of patients with supracricoid partial laryngectomy (SCPL) in our institution. Our results show that SCPL is a well-tolerated procedure with generally good functional outcomes for patients with advanced laryngeal cancer.
Objective We analyzed the oncological and functional results of a cohort of 35 patients who had undergone SCPL, and we highlighted the complications, identified the overall and disease-free survivals, demonstrating that the reconstructive laryngectomy guarantees the oncological safety and reproducibility of the oncological results, preserving the laryngeal functions and promoting an improvement in the patient's quality of life, favoring communication and interpersonal relationships.
Methods Between 2010 and 2018, 35 patients underwent SCPL for primary and recurrent laryngeal squamous cell carcinomas, and they were divided into two subgroups: in 16 cases, the cricohyoidoepiglottopexy according to the Mayer-Piquet technique was performed, while the remaining 19 cases were submitted to the cricohyoidopexy according to the Labayle technique. In addition to evaluating the oncological results of patients undergoing reconstructive laryngectomy, the present study also aimed to evaluate the functionality of the residual larynx and the quality of life.
Results The overall and disease-free survivals were of 83% and 76.3% respectively. All patients were able to swallow. The nasogastric tube was removed after a mean period of 21.8 days (range: 14 to 28 days). The mean decannulation time was of 23.4 days after surgery (range: 15 to 36 days).
Conclusion The curves for the overall and disease-free survivals show that SCPL can guarantee oncological safety comparable to that of total laryngectomies in diseases in the intermediate stage and in carefully-selected advanced stages.
The Clinical Profile, Early Warning Score, and Outcome of Children Aged 0–12 Years Referred to a Tertiary Care Hospital in North India
Authors: Eswaramoorthy Brinda , Gupta Ratan , Bhatt Meenakshi , Roy Manas Pratim 
Published: July 2021

AbstractPediatric patients are referred for multiple reasons, either for better therapeutic services or diagnostic purposes. The clinical condition of patients at the time of referral can significantly affect the outcome of such patients and there is not much data on this aspect. The overall objective of this study was to study the demographic and clinical profile, the causes for referral, and the outcome of pediatric patients being referred to a single tertiary care hospital. This was a prospective observational study done in the Department of Pediatrics of a single tertiary care hospital in North India over the course of 1 year. Patients referred from other health facilities in the age group 0 to 12 years who were admitted in the pediatric ward of the hospital were enrolled. The primary objective was to study the clinical profile and outcome (mortality) of these patients. The secondary objectives were to study the referral pattern of the referred patients, causes for referral, and the severity of illness at the time of admission as assessed by Irish Pediatric Early Warning Score (PEWS) and its correlation with the outcome. The outcomes were categorized as: discharge, death, left against medical advice, referred to other centers, others. Early warning scores are useful to measure the severity of disease and to follow patients' progress. The Irish PEWS score was used in this study to provide a rapid measure of the degree of sickness. Respiratory system disorders and neonatal illnesses were the most common illnesses observed. Most patients had low disease severity as per Irish PEWS score. The overall mortality rate among the referred patients was 19.25%. Patients with younger age, higher scores, neonatal illnesses, and neurological disorders had higher risk of mortality. Training of health personnel at primary and secondary levels in the commonly encountered illnesses will improve provision of care at the local level and decrease low risk referrals.
Knowledge, Attitudes, and Perceptions about Antibiotic Stewardship Programs among Neonatology Trainees
Authors: Kalu Ibukunoluwa C. , Mukhopadhyay Sagori , Dukhovny Dmitry , Young Rebecca , Guzman-Cottrill Judith A. 
Published: July 2021

Objective Antibiotic stewardship should be an essential component of neonatology training as neonatal intensive care units (NICU) have unique stewardship needs. Our aim was to assess neonatology fellowship trainees' knowledge, attitudes, and perceptions about antibiotic stewardship to inform sustainable curriculum development.
Study Design We distributed an electronic survey to neonatology fellows in the United States over 4 months (January–April 2018) via Accreditation Council for Graduate Medical Education program directors.
Results Of 99 programs in the United States with an estimated 700 fellows, 159 (23%) fellows from 52 training programs (53%) responded to the survey and 139 (87%) provided analyzed responses. Majority of respondents were training in southern (59; 42%) and northeastern (43; 31%) regions and were equally spread across all 3 years of training. One hundred (72%) respondents reported an antibiotic stewardship program (ASP) in their institution. While 86% (120/139) were able to identify the components of an ASP, 59% (82/139) either did not or were unsure if they had received antibiotic stewardship training during fellowship.Furthermore, while answering case studies, 124 (89%) respondents identified the optimal antibiotic for methicillin susceptible Staphylococcus aureus (MSSA) infection and 69 (50%) respondents chose appropriate empiric antibiotics for neonatal meningitis. Notably, fellowship training year was not significantly related to the proportion of incorrect knowledge responses (p = 0.40). Most survey respondents (81; 59%) identified small group sessions as the most useful teaching format, while others chose audit and feedback of individual prescribing behavior (52; 38%) and didactic lectures (52; 38%). Finally, ninety-five (69%) respondents preferred trainee-led ASP interventions targeting focal areas such as antifungal and surgical prophylaxis.
Conclusion Antibiotic stewardship is a critical part of neonatology training. Neonatology fellows report variation in access to ASP during their training. Fellows prefer dedicated trainee-led interventions and stewardship curriculum taught within small group settings to promote targeted NICU ASP.
Key Points
Predicting Adverse Outcomes in Monochorionic-Diamniotic Twins: The Role of Intertwin Discrepancy in Middle Cerebral Artery Doppler Measurements and the Cerebroplacental Ratio
Authors: Mok Thalia , Afshar Yalda , Platt Lawrence D. , Guo Rong , Rao Rashmi R. , Pluym Ilina D. , Silverman Neil S. , Han Christina S. 
Published: July 2021

Objective This study was aimed to evaluate the role of intertwin discrepancy in middle cerebral artery peak systolic velocity (MCA-PSV) and cerebroplacental ratio (CPR) for the prediction of adverse outcomes in monochorionic-diamniotic (MCDA) twin pregnancies.
Study Design A retrospective cohort study of MCDA pregnancies that underwent ultrasound surveillance at a perinatal referral center from 2007 to 2017. Intertwin MCA-PSV discrepancy (MCA-ΔPSV-MoM) was defined as the absolute difference of MCA-PSV multiple of the median (MoM) for gestational age between twins. Intertwin CPR discrepancy (CPR-Δ) was defined as the absolute difference of CPR between twins. The maximum MCA-ΔPSV-MoM and CPR-Δ before and after 26 weeks of gestation were assessed as predictors of pregnancy and neonatal outcomes through simple logistic regression models and Pearson's correlation coefficients. Receiver operating characteristic (ROC) curves were generated to determine the predictive value of maximum MCA-ΔPSV-MoM and CPR-Δ.
Results A total of 143 MCDA pregnancies met inclusion criteria. There was a significant association between MCA-ΔPSV-MoM at <26 weeks and the development of twin anemia-polycythemia sequence (TAPS; p = 0.007), intrauterine fetal demise (IUFD; p = 0.009), and neonatal intensive care unit (NICU) admission (p < 0.05). MCA-ΔPSV-MoM at ≥26 weeks was associated with the development of TAPS (p < 0.001). CPR-Δ at <26 weeks was associated with the development of twin-twin transfusion syndrome (TTTS; p = 0.03) and NICU admission (p = 0.02). MCA-ΔPSV-MoM at ≥26 weeks was highly predictive of TAPS (area under curve [AUC] = 0.92). A cut-off of 0.44 would identify TAPS with 100% sensitivity and 73% specificity.
Conclusion In MCDA pregnancies, intertwin MCA and CPR discrepancies are associated with adverse pregnancy and neonatal outcomes, including TAPS, TTTS, IUFD, and NICU admission. Evaluation of intertwin MCA and CPR differences demonstrated the potential for clinical predictive utility in the surveillance of MCDA twin pregnancies.
Key Points
Predicting Cardiac Anatomy, Physiology, and Surgical Management Based on Fetal Echocardiography in Heterotaxy Syndrome
Authors: Romanowicz Jennifer , Sinha Pranava , Donofrio Mary T. , Schidlow David N. 
Published: July 2021

Objective Heterotaxy syndrome (HS) is often associated with complex congenital heart disease (CHD). While fetal echocardiography (FE) permits accurate prenatal identification of most CHD, the high level of disease complexity in HS may pose challenges in predicting postnatal findings and outcomes. This study aimed to define the accuracy of FE in predicting postnatal anatomy, physiology, and surgical management of CHD in the setting of HS.
Study Design Retrospective single-center cohort study including all patients with a prenatal diagnosis of HS from 2003 to 2018. Anatomic diagnoses from FE reports were compared with postnatal echocardiogram, catheterization, and operative reports. Prenatal predictions were compared with postnatal outcomes with a focus on ductal dependence, time to first intervention (immediate, neonatal period, 1–6 months, or older than 6 months), and surgical approach (single or biventricular).
Results There were 102 pregnancies with fetal HS resulting in 21 terminations, 5 fetal losses, and 76 live births. Of the live births, 55 had significant CHD and available postnatal data for review. Among this group, survival to 1 year was 62% and was no different comparing single versus biventricular surgical approach. FE diagnostic accuracy varied by anatomic feature and was the lowest for diagnosis of venous anatomy. Determination of postnatal care was most accurate for predicting single versus biventricular surgical approach (91%), followed by ductal dependence (75%). Accuracy for predicting time to first intervention was the lowest at 69%. The most common reason for an incorrect prediction was difficulty in assessing the severity of pulmonary stenosis.
Conclusion FE permits accurate predictions regarding surgical approach. Characterizing systemic and pulmonary veins is challenging, as is predicting ductal dependence and time to first intervention. These data suggest that despite the high diagnostic accuracy of CHD in HS, a circumspect approach may be reasonable with regard to predicting some anatomic details and postnatal management decisions.
Key Points
The impact of water vapor on the OH reactivity toward CH3CHO at ultra-low temperatures (21.7–135.0 K): Experiments and theory
Authors: Neeman E. M. , González D. , Blázquez S. , Ballesteros B. , Canosa A. , Antiñolo M. , Vereecken L. , Albaladejo J. , Jiménez E. 
Published: July 2021

The role of water vapor (H2O) and its hydrogen-bonded complexes in the gas-phase reactivity of organic compounds with hydroxyl (OH) radicals has been the subject of many recent studies. Contradictory effects have been reported at temperatures between 200 and 400 K. For the OH + acetaldehyde reaction, a slight catalytic effect of H2O was previously reported at temperatures between 60 and 118 K. In this work, we used Laval nozzle expansions to reinvestigate the impact of H2O on the OH-reactivity with acetaldehyde between 21.7 and 135.0 K. The results of this comprehensive study demonstrate that water, instead, slows down the reaction by factors of ∼3 (21.7 K) and ∼2 (36.2–89.5 K), and almost no effect of added H2O was observed at 135.0 K.
Geodesic scattering on hyperboloids and Knörrer’s map
Authors: Veselov A P , Wu L H 
Published: July 2021

Abstract
We use the results of Moser and Knörrer on relations between geodesics on quadrics and solutions of the classical Neumann system to describe explicitly the geodesic scattering on hyperboloids. We explain the relation of Knörrer’s reparametrisation with projectively equivalent metrics on quadrics introduced by Tabachnikov and independently by Matveev and Topalov, giving a new proof of their result. We show that the projectively equivalent metric is regular on the projective closure of hyperboloids and extend Knörrer’s map to this closure.
Physical and mechanical characterization of sand replaced stone dust concrete
Authors: Humayun Muhammad , Ahad Muhammad Zeeshan , Rehman Ghori Ubaid ur , Naveed Amir , Ahmad Fawad , Arif Muhammad , Afridi Shaista , Sadiq Muhammad , Jan Saeed Ullah , Asif Muhammad 
Published: July 2021

Abstract
In this research work, physical, chemical, morphological, and mechanical behavior as partial replacement of fine aggregate in concrete. Stone dust was acquired from three different sources i.e. Nowshera, Dara, and Besai, while concrete was kept at a ratio of 1:2:4 and water to cement ratio at 0.5 as per ASTM standards for considerable workability. The compressive strength, ultrasonic pulse velocity (UPV), its correlation, density, durability test, x-ray fluorescence (XRF) analysis, and Scanning electron microscopy was carried out. Compressive strength at curing ages of 7, 14, and 28 days with 20%, 30%, and 40% replacement of sand was incorporated in concrete. The results indicated a slight increase in compressive strength at 20% replacement level for the Besai Concrete (BC), Nowshera Concrete (NC), and Dara Concrete (DC). For durability analysis; Rapid Chloride Permeability Test (RCPT) carried out on hardened stone dust-based concrete shows that with the addition of stone dust the voids between fine and coarse aggregates are filled up, less charge will pass, and ultimately durability is increased as per ASTM C 1202. The chemical composition of the stone dust samples, through XRF analysis, indicated that Silica dioxide (SiO2) compounds present in (NC), (DC), and (BC) were 13.34%, 12.339% & 11.593% respectively. The maximum compressive strength development in NC was possibly due to the presence of SiO2 compound in excess quantity in Nowshera stone dust as compared to other samples tested. Hence it can be recommended that locally available stone dust in Peshawar and its surrounding are suitable for a maximum of 40% replacement level.
MDContactCom: a tool to identify differences of protein molecular dynamics from two MD simulation trajectories in terms of interresidue contacts
Authors: Motono Chie , Yanagida Shunsuke , Sato Miwa , Hirokawa Takatsugu 
Published: July 2021

Abstract

Summary
Comparing results from multiple MD simulations performed under different conditions is essential during the initial stages of analysis. We propose a tool called MD Contact Comparison (MDContactCom) that compares residue-residue contact fluctuations of two MD trajectories, quantifies the differences, identifies sites that exhibit large differences and visualizes those sites on the protein structure. Using this method, it is possible to identify sites affected by varying simulation conditions and reveal the path of propagation of the effect even when differences between the 3D structure of the molecule and the fluctuation RMSF of each residue is unclear. MDContactCom can monitor differences in complex protein dynamics between two MD trajectories and identify candidate sites to be analyzed in more detail. As such, MDContactCom is a versatile software package for analyzing most MD simulations.

Availability and implementation
MDContactCom is freely available for download on GitLab. The software is implemented in Python3. https://gitlab.com/chiemotono/mdcontactcom.

Supplementary information
Supplementary data are available at Bioinformatics online.
Spicoid morphology of Mapanioideae (Cyperaceae): an evolutionary perspective
Authors: Monteiro Mariana M , Demarco Diego , Larridon Isabel , Prychid Christina J , Prenner Gerhard 
Published: July 2021

AbstractCyperaceae subfamily Mapanioideae have reproductive units called spicoids, which are interpreted alternatively as flowers or partial inflorescence, and little is known about morphological variation of spicoids from an evolutionary perspective. Combining morphological and evolutionary analyses, we aimed to assess variation in spicoid morphology and its evolutionary significance. Spicoid morphology of 48 species of Mapanioideae was analysed, and variable characters were selected for downstream analyses. The results showed that the general spicoid morphology is consistent within genera and that character states can vary within genera, supporting molecular phylogenetic relationships. The presence of lateral keeled scales, the number of lateral stamens, inner scales, inner stamens and pistil merosity were shown to be variable. Possible ancestral spicoid morphology was reconstructed as resembling the current morphology of Hypolytrum. Based on the most frequent evolutionary changes observed, the increase in the number of parts (number of inner scales, inner stamens and pistil merosity) seems to be a recurrent process in spicoid evolution, contradicting a previous hypothesis that assumed changes in spicoid morphology towards reduction. Combining molecular and morphological analyses allows us to refine our knowledge of the evolutionary history of Mapanioideae and enhances the understanding of the evolution of Cyperaceae.
Kv2.1 Potassium Channels Regulate Repetitive Burst Firing in Extratelencephalic Neocortical Pyramidal Neurons
Authors: Newkirk Greg S , Guan Dongxu , Dembrow Nikolai , Armstrong William E , Foehring Robert C , Spain William J 
Published: July 2021

Abstract
Coincidence detection and cortical rhythmicity are both greatly influenced by neurons’ propensity to fire bursts of action potentials. In the neocortex, repetitive burst firing can also initiate abnormal neocortical rhythmicity (including epilepsy). Bursts are generated by inward currents that underlie a fast afterdepolarization (fADP) but less is known about outward currents that regulate bursting. We tested whether Kv2 channels regulate the fADP and burst firing in labeled layer 5 PNs from motor cortex of the Thy1-h mouse. Kv2 block with guangxitoxin-1E (GTx) converted single spike responses evoked by dendritic stimulation into multispike bursts riding on an enhanced fADP. Immunohistochemistry revealed that Thy1-h PNs expressed Kv2.1 (not Kv2.2) channels perisomatically (not in the dendrites). In somatic macropatches, GTx-sensitive current was the largest component of outward current with biophysical properties well-suited for regulating bursting. GTx drove ~40% of Thy1 PNs stimulated with noisy somatic current steps to repetitive burst firing and shifted the maximal frequency-dependent gain. A network model showed that reduction of Kv2-like conductance in a small subset of neurons resulted in repetitive bursting and entrainment of the circuit to seizure-like rhythmic activity. Kv2 channels play a dominant role in regulating onset bursts and preventing repetitive bursting in Thy1 PNs.
Optogenetic Activation of Interneuron Subtypes Modulates Visual Contrast Responses of Mouse V1 Neurons
Authors: Shapiro Jared T , Michaud Nicole M , King Jillian L , Crowder Nathan A 
Published: July 2021

AbstractInterneurons are critical for information processing in the cortex. In vitro optogenetic studies in mouse primary visual cortex (V1) have sketched the connectivity of a local neural circuit comprising excitatory pyramidal neurons and distinct interneuron subtypes that express parvalbumin (Pvalb+), somatostatin (SOM+), or vasoactive intestinal peptide (VIP+). However, in vivo studies focusing on V1 orientation tuning have ascribed discrepant computational roles to specific interneuron subtypes. Here, we sought to clarify the differences between interneuron subtypes by examining the effects of optogenetic activation of Pvalb+, SOM+, or VIP+ interneurons on contrast tuning of V1 neurons while also accounting for cortical depth and photostimulation intensity. We found that illumination of the cortical surface produced a similar spectrum of saturating additive photostimulation effects in all 3 interneuron subtypes, which varied with cortical depth rather than light intensity in Pvalb+ and SOM+ cells. Pyramidal cell modulation was well explained by a conductance-based model that incorporated these interneuron photostimulation effects.
Prevention of Coronavirus Disease 2019 (COVID-19) by mRNA-Based Vaccines Within the General Population of California
Authors: Andrejko Kristin L , Pry Jake , Myers Jennifer F , Jewell Nicholas P , Openshaw John , Watt James , Jain Seema , Lewnard Joseph A ,   California COVID-19 Case-Control Study Team, Samani Helia , Li Sophia S , Barbaduomo Camilla M , Walas Nikolina , Wan Christine , Fang Anna T , Ho Timothy , Tran Vivian H , Xavier Erin , Javadi Mahsa H , Poindexter Diana J , Dabbagh Najla , Spinosa Michelle M , Birkett Nozomi , Frost Paulina M , Dong Zheng N , Saretha Shrey , Cornejo Adrian F , DeGuzman Jennifer L , Bermejo Miriam I , Park Hyemin , Lam Amanda 
Published: July 2021

Abstract

Background
Estimates of coronavirus disease 2019 (COVID-19) vaccine effectiveness under real-world conditions, and understanding of barriers to uptake, are necessary to inform vaccine rollout.

Methods
We enrolled cases (testing positive) and controls (testing negative) from among the population whose SARS-CoV-2 molecular diagnostic test results from 24 February to 29 April 2021 were reported to the California Department of Public Health. Participants were matched on age, sex, and geographic region. We assessed participants’ self-reported history of mRNA-based COVID-19 vaccine receipt (BNT162b2 and mRNA-1273). Participants were considered fully vaccinated 2 weeks after second dose receipt. Among unvaccinated participants, we assessed willingness to receive vaccination. We measured vaccine effectiveness (VE) via the matched odds ratio of prior vaccination, comparing cases with controls.

Results
We enrolled 1023 eligible participants aged ≥18 years. Among 525 cases, 71 (13.5%) received BNT162b2 or mRNA-1273; 20 (3.8%) were fully vaccinated with either product. Among 498 controls, 185 (37.1%) received BNT162b2 or mRNA-1273; 86 (16.3%) were fully vaccinated with either product. Two weeks after second dose receipt, VE was 87.0% (95% confidence interval: 68.6–94.6%) and 86.2% (68.4-93.9%) for BNT162b2 and mRNA-1273, respectively. Fully vaccinated participants receiving either product experienced 91.3% (79.3–96.3%) and 68.3% (27.9–85.7%) VE against symptomatic and asymptomatic infection, respectively. Among unvaccinated participants, 42.4% (159/375) residing in rural regions and 23.8% (67/281) residing in urban regions reported hesitancy to receive COVID-19 vaccination.

Conclusions
Authorized mRNA-based vaccines are effective at reducing documented SARS-CoV-2 infections within the general population of California. Vaccine hesitancy presents a barrier to reaching coverage levels needed for herd immunity.