bluuebunny/crossref_metadata_2025_split huggingface dataset:
Energy efficiency of grazing Hereford heifers classified by paternal residual feed intake
Authors: Marín María F , Naya Hugo , Espasandin Ana C , Navajas Elly , Devincenzi Thais , Carriquiry Mariana 
Published: March 2024

Abstract
Residual feed intake (RFI) has become a widely spread index of feed efficiency. Although most of beef cattle systems in the world are pasture based, RFI evaluation and research is usually performed in confinement conditions. In this context, residual heat production (RHP) estimated as the difference between actual and expected heat production (HP), could allow to identify efficient animals. Thus, the aim of this work was to evaluate the relationship between paternal estimated breeding values (EBV) for RFI and beef heifer efficiency, measured as RHP, as well as its association with heifers’ productive and reproductive performance on grazing conditions. Seventy-one 25 ± 0.8-mo-old and seventy-four 24 ± 0.7-mo-old Hereford heifers were managed as contemporary groups in spring 2019 and 2020, respectively. Heifers were sired by 10 RFI-evaluated bulls and classified into three groups according to the paternal EBV for RFI: five bulls of low RFI (high efficiency, pHE), two bulls of medium RFI (medium efficiency), and three bulls of high RFI (low efficiency, pLE). The experimental period lasted 70 d prior to their first insemination where HP was determined by the heart rate-O2 pulse technique. In addition, reproductive performances during the first and second breeding and calving seasons were recorded. Heifers’ RHPs expressed as MJ/d and kJ/kg of body weight (BW)0.75/d were positively correlated with paternal RFI EBVs (P &lt; 0.05; r &gt; 0.60). Moreover, BW and average daily gain (ADG) were greater (P &lt; 0.01) for pHE than pLE heifers while expressed as units of BW0.75/d, neither total HP nor metabolizable energy (ME) intake differed between groups, but pHE heifers had greater retained energy (RE; P &lt; 0.01) and lower RHP (P &lt; 0.05) than pLE ones. Gross energy efficiency (RE/ME intake) was greater (P &lt; 0.001) for pHE than pLE heifers while the HP/ADG and RHP/ADG were reduced (P &lt; 0.05) and feed-to-gain ratio (ADG/DM intake) tended to be greater (P = 0.07) for pHE than pLE heifers. In addition, during the first breeding and calving seasons, small but significant (P &lt; 0.01) differences in reproductive responses between groups suggested an earlier pregnancy in pHE heifers than the pLE group, differences that disappeared during the second breeding and calving seasons. Thus, heifers sired by high-efficiency bulls measured as RFI were more efficient measured as RHP in grazing conditions, without significant differences in reproductive performance.
Mechanical memory based on chromatin and metabolism remodeling promotes proliferation and smooth muscle differentiation in mesenchymal stem cells
Authors: Na Jing , Shi Qiusheng , Yang Zhijie , Liu Yu , Chen Xinyuan , Wang Ziyi , Zheng Lisha , Fan Yubo 
Published: March 2024

AbstractStem cells respond and remember mechanical cues from the microenvironment, which modulates their therapeutic effects. Chromatin organization and energy metabolism regulate the stem cell fate induced by mechanical cues. However, the mechanism of mechanical memory is still unclear. This study aimed to investigate the effects of mechanical amplitude, frequency, duration, and stretch cycle on mechanical memory in mesenchymal stem cells. It showed that the amplitude was the dominant parameter to the persistence of cell alignment. F‐actin, paxillin, and nuclear deformation are more prone to be remolded than cell alignment. Stretching induces transcriptional memory, resulting in greater transcription upon subsequent reloading. Cell metabolism displays mechanical memory with sustained mitochondrial fusion and increased ATP production. The mechanical memory of chromatin condensation is mediated by histone H3 lysine 27 trimethylation, leading to much higher smooth muscle differentiation efficiency. Interestingly, mechanical memory can be transmitted based on direct cell–cell interaction, and stretched cells can remodel the metabolic homeostasis of static cells. Our results provide insight into the underlying mechanism of mechanical memory and its potential benefits for stem cell therapy.
Leaders need to look in the mirror
Authors: Koch Josh 
Published: March 2024

Purpose of review
There is commonly a discrepancy between optimal physician leader behavior and actual physician leader behavior. Identifying and addressing this discrepancy is essential to optimize culture in high-risk care units.

Recent findings
Unit culture is directly linked to improving well tolerated and effective care. Adoption of strategies to better address bad behavior is necessary.

Summary
To address a toxic culture in a high-risk unit, physician leaders must first look inwards and take personal responsibility for their actions and words. It is a much easier task to talk about healthy culture than it is to walk it.
Altered lipid metabolism and the development of metabolic-associated fatty liver disease
Authors: Foster Christy , Gagnon Charles A. , Ashraf Ambika P. 
Published: March 2024

Purpose of review
An increasing amount of research has underscored the significant role of lipoproteins in the pathogenesis of metabolic-associated fatty liver disease (MAFLD). This comprehensive review examines the intricate relationship between lipoprotein abnormalities and the development of MAFLD.

Recent findings
Atherogenic dyslipidemia seen in insulin resistance states play a significant role in initiating and exacerbating hepatic lipid accumulation. There are also specific genetic factors (PNPLA3, TM6SF2, MBOAT7, HSD17B13, GCKR-P446L) and transcription factors (SREBP-2, FXR, and LXR9) that increase susceptibility to both lipoprotein disorders and MAFLD. Most monogenic primary lipid disorders do not cause hepatic steatosis unless accompanied by metabolic stress. Hepatic steatosis occurs in the presence of secondary systemic metabolic stress in conjunction with predisposing environmental factors that lead to insulin resistance. Identifying specific aberrant lipoprotein metabolic factors promoting hepatic fat accumulation and subsequently exacerbating steatohepatitis will shed light on potential targets for therapeutic interventions.

Summary
The clinical implications of interconnection between genetic factors and an insulin resistant environment that predisposes MAFLD is many fold. Potential therapeutic strategies in preventing or mitigating MAFLD progression include lifestyle modifications, pharmacological interventions, and emerging therapies targeting aberrant lipoprotein metabolism.
Evaluating aortomesenteric parameters in a tertiary center of Nepal for superior mesenteric artery syndrome diagnosis and risk factors: cross-sectional study
Authors: Sapkota Diwas , Adhikari Bikash Bikram , Shrestha Aimandu , Katwal Shailendra 
Published: March 2024

Background and objectives:
This study examines aortomesenteric angle (AMA) and distance (AMD), which are critical in superior mesenteric artery (SMA) syndrome. Addressing the scarcity of SMA cases, the research explores potential links with lower BMI and aims to establish normative data for diagnostic and predictive purposes, using contrast-enhanced computed tomography (CT) scans across various BMI and sex categories.

Methodology:
A retrospective quantitative cross-sectional study was conducted on 189 patients undergoing abdominal contrast-enhanced CT scans between December 2019 and December 2020. Ethical clearance was obtained, and participants provided informed consent. Exclusion criteria targeted specific medical histories. Patient demographics, BMI categories, and imaging data were recorded. Helical 128-slice CT scans were employed, with sagittal-oblique multiplanar reconstructions for parameter assessments. Statistical analysis utilized SPSS 26.0, including Pearson correlation coefficients and mean calculations.

Results:
The study reveals a mean AMA of 54.07°±8.53° and a mean distance of 16.25±3.44 mm. Elevated BMI is found to positively correlate with AMA and distance, indicating that higher BMI values may augment these parameters, with an additional positive correlation observed between AMA and distance. No significant correlations are found with patient age or sex.

Conclusion:
The study concludes that decreased BMI may pose a potential risk for SMA syndrome, as evidenced by the observed correlations with aortomesenteric parameters. Understanding these normal values in the Nepalese population is critical for accurate diagnoses and predictions using CT scans. The research highlights the impact of demographic factors on these parameters and emphasizes their significance in clinical assessments related to SMA syndrome.
A multidimensional approach to identifying high-performing trauma centers across the United States
Authors: Hamad Doulia M. , Subacius Haris , Thomas Arielle , Guttman Matthew P. , Tillmann Bourke W. , Jerath Angela , Haas Barbara , Nathens Avery B. 
Published: March 2024

INTRODUCTION
The differentiators of centers performing at the highest level of quality and patient safety are likely both structural and cultural. We aimed to combine five indicators representing established domains of trauma quality and to identify and describe the structural characteristics of consistently performing centers.

METHODS
Using American College of Surgeons Trauma Quality Improvement Program data from 2017 to 2020, we evaluated five quality measures across several care domains for adult patients in levels I and II trauma centers: (1) time to operating room for patients with abdominal gunshot wounds and shock, (2) proportion of patients receiving timely venous thromboembolism prophylaxis, (3) failure to rescue (death following a complication), (4) major hospital complications, and (5) mortality. Overall performance was summarized as a composite score incorporating all measures. Centers were ranked from highest to lowest performer. Principal component analysis showed the influence of each indicator on overall performance and supported the composite score approach.

RESULTS
We identified 272 levels I and II centers, with 28 and 27 centers in the top and bottom 10%, respectively. Patients treated in high-performing centers had significant lower rates of death major complications and failure to rescue, compared with low-performing centers (p < 0.001). The median time to operating room for gunshot wound was almost half that in high compared with low-performing centers, and rates of timely venous thromboembolism prophylaxis were over twofold greater (p < 0.001). Top performing centers were more likely to be level I centers and cared for a higher number of severely injured patients per annum. Each indicator contributed meaningfully to the variation in scores and centers tended to perform consistently across most indicators.

CONCLUSION
The combination of multiple indicators across dimensions of quality sets a higher standard for performance evaluation and allows the discrimination of centers based on structural elements, specifically level 1 status, and trauma center volume.

LEVEL OF EVIDENCE
Therapeutic /Care Management; Level IV.
Using Chest X-Ray to Predict Tube Thoracostomy in Traumatic Pneumothorax: A Single-Institution Retrospective Review
Authors: Srinivas Shruthi , Henderson Katelyn , Bergus Katherine C. , Jacobs Ayanna , Baselice Holly , Donnelly Edwin , Valdez Carrie , Tracy Brett M. , Coleman Julia R. 
Published: March 2024

ABSTRACT

Introduction
Traumatic pneumothorax (PTX) is a common occurrence in thoracic trauma patients, with a majority requiring tube thoracostomy (TT) for management. Recently, the “35-mm” rule has advocated for observation of patients with PTX less than 35 mm on chest computed tomography (CT) scan. This rule has not been examined in chest x-ray (CXR). We hypothesize that a similar size cutoff can be determined in CXR predictive of need for tube thoracostomy.

Methods
We performed a single-institution retrospective review of patients with traumatic PTX from 2018 – 2022, excluding those who underwent TT prior to CXR. Primary outcomes were size of pneumothorax on CXR and need for TT; secondary outcome was failed observation, defined as TT more than four hours after presentation. To determine the size cutoff on CXR to predict TT need, area under the receiver operating curve (AUROC) analyses were performed and Youden’s index calculated (significance at p < 0.05). Predictors of failure were calculated using logistic regression.

Results
There were 359 pneumothoraces in 322 patients (94.4% blunt trauma, median injury severity score 14). Of these, 82 (22.8%) had a TT placed within the first four hours. Fifty-five of observed patients (21.2%) failed, and these patients had a larger PTX on CXR (8.6 mm [5.0 – 18.0 mm] versus 0.0 mm [0.0 – 2.3 mm] (p < 0.001)). CXR PTX size correlated moderately with CT size (r = 0.31, p < 0.001) and was highly predictive of need for TT insertion (AUC 0.75, p < 0.0001), with an optimal size cutoff predicting TT need of 38 mm.

Conclusion
CXR imaging size was predictive of need for TT, with an optimal size cutoff on CXR of 38 mm, approaching the “35-mm rule.” In addition to size, failed observation was predicted by presenting lactic acidosis and need for supplemental oxygen. This demonstrates this cutoff should be considered for prospective study in CXR.

Level of Evidence: III; Therapeutic/Care Management
Central nervous system adverse events of immune checkpoint inhibitors
Authors: Farina Antonio , Villagrán-García Macarena , Vogrig Alberto , Joubert Bastien 
Published: March 2024

Purpose of review
Immune checkpoint inhibitors (ICI) may trigger immune-related adverse events which rarely affect the central nervous system (CNS-irAEs). Over the past few years, cumulative data have led to the characterization of well defined syndromes with distinct cancer and antibody associations as well as different outcomes.

Recent findings
The most frequent CNS-irAE is encephalitis, which includes three main groups: meningoencephalitis, a nonfocal syndrome usually responsive to corticosteroids; limbic encephalitis, associated with high-risk paraneoplastic neurological syndromes (PNS) antibodies (e.g. anti-Hu, anti-Ma2) and neuroendocrine cancers, characterized by poor treatment response and outcomes; and cerebellar ataxia, with variable outcomes (worse when high-risk PNS antibodies are detected). Additionally, a diffuse encephalopathy without inflammatory findings, with poor response to corticosteroids and high mortality has been described. The spectrum of CNS-irAEs also includes meningitis, myelitis, and rarer presentations. A subset of CNS-irAEs (i.e. limbic encephalitis and/or rapidly progressive cerebellar ataxia) is undistinguishable from ICI-naïve PNS.

Summary
The clinical and outcomes diversity of CNS-irAEs suggests different pathogenic mechanisms, which need to be understood to establish more effective and specific treatment modalities. It is crucial to identify biomarkers able to predict which patients will experience severe CNS-irAEs, to anticipate their diagnosis, and to predict long-term outcomes.
Combined DeRitis ratio and alkaline phosphatase on the Prediction of Portal Vein Tumor Thrombosis in Patients with Hepatocellular Carcinoma
Authors: Miao Tong-Guo , Zhang Shi-Ya , Zhang Yun-Jing , Ma Dong , Nan Yuemin 
Published: March 2024

AbstractPortal vein tumor thrombus (PVTT) in hepatocellular carcinoma (HCC) represents a worse liver function, less treatment tolerance, and poor prognosis. Here, this study aims to explore whether a combination of the DeRitis ratio (AST/ALT) and alkaline phosphatase (ALP) index (briefly named DALP) availably predicts the occurrence risk of PVTT in patients with HCC. We performed a retrospective study enrolling consecutive patients with HCC from January 2017 to December 2020 in Hebei Medical University Third Hospital. ROC analysis was performed to estimate the predictive effectiveness and optimal cut-off value of DALP for PVTT occurrence in patients with HCC. Kaplan-Meier analysis revealed the survival probabilities in each subgroup according to the risk classification of DALP value. Univariate and multivariate Logistics regression analyses were applied to determine the independent risk for poor prognosis. ROC analysis revealed that the optimal cut-off value for DALP was 1.045, with an area under the curve (AUC) of 0.793 (95% CI: 0.697-0.888). Based on the DALP classification (three scores: 0-2) with distinguishable prognoses, patients in the score 0 group had the best prognosis with a 1-year overall survival (OS) of 100%, whereas score 2 patients had the worst prognosis with 1-year OS of 72.4%. Similarly, there was a statistically different recurrence-free survival among the three groups. Besides, this risk classification was also associated with PVTT progression in HCC patients (odds ratio [OR]:5.822, P < 0.0001). Pathologically, patients in the score 2 group had more advanced tumors considering PVTT, extrahepatic metastasis, and ascites than those in score 0, 1 groups. Moreover, patients with a score of 2 had more severe hepatic inflammation than other groups. Combination of DeRitis ratio and ALP index presented a better predictive value for PVTT occurrence in patients with HCC, contributing to the tertiary prevention.
Evaluation of the Multi-Cancer Early Detection (MCED) value of YiDiXie™-HS and YiDiXie™-SS
Authors: Sun Chen , Lu Chong , Zhang Yongjian , Wang Ling , Ge Zhenjian , Wen Zhenyu , Chen Wenkang , Li Yingqi , Wu Yutong , Lin Shengjie , Zhang Pengwu , Wang Wuping , Chen Siwei , Zhou Huimei , Li Xutai , Wang Shaobin , Xia Yong , Li Wei , Lan Wei , Cai Yongjiang , Ji Ling , Wang Haibo , Lai Yongqing 
Published: March 2024

BackgroundCancer is a serious threat to the whole of humanity. The Multi-Cancer Early Detection (MCED) test is expected to solve the problem of “Universal cancer screening”. The purpose of this study is to evaluate the MCED value of two MCED tests, YiDiXie™-HS and YiDiXie™-SS, in multiple cancer types.Patients and methods11094 subjects were finally included in this study (the malignant tumor group, n = 4405; the normal control group, n = 6689). The malignant tumor group included all major solid and hematological malignant tumor types. The sensitivity and specificity of YiDiXie™-HS and YiDiXie™-SS were evaluated, respectively.ResultsThe overall sensitivity of YiDiXie™-HS for different cancer types and stages was 90.1% (89.2% - 90.9%; 3971/4405), and its specificity was 89.7% (89.0% - 90.4%; 6002/6689). Its sensitivity increases with clinical stage: stage I, 85.6% (83.9% - 87.1%); stage II, 91.4% (89.6% - 93.0%); stage III, 93.9% (92.0% - 95.4%); and stage IV, 98.4% (96.9% - 99.2%). The overall sensitivity of YiDiXie™-SS for different cancer types and stages was 99.1% (98.8% - 99.3%; 4365/4405), and its specificity was 65.2% (64.0% - 66.3%; 4358/6689). Its sensitivity was basically comparable in each clinical stage: stage I, 98.6% (98.0% - 99.1%); stage II, 99.5% (98.9% - 99.8%); stage III, 99.5% (98.6% - 99.8%); stage IV, 99.8% (98.9% - 100.0%).ConclusionYiDiXie™-HS has a high sensitivity in all clinical stages of all cancer types. YiDiXie™-SS has an extremely high sensitivity in all clinical stages of all cancer types. YiDiXie™-HS and YiDiXie™-SS can replace existing cancer screening tests and are expected to solve the world problem of “Universal cancer screening”.Clinical trial numberChiCTR2200066840.
Pretrauma cognitive traits predict trauma-induced fear generalization and associated prefrontal functioning in a longitudinal model of posttraumatic stress disorder
Authors: Szente László , Aliczki Manó , Balla Gyula Y. , Maróthy Róbert D. , Varga Zoltán K. , Varga Bendegúz Á. , Borhegyi Zsolt , Biró László , Demeter Kornél , Miskolczi Christina , Balogh Zoltán , Szebik Huba , Szilvásy-Szabó Anett , Kurilla Anita , Tóth Máté , Mikics Éva 
Published: March 2024

AbstractPosttraumatic stress disorder (PTSD) is a chronic psychiatric condition that develops in susceptible individuals exposed to traumatic stress, challenging clinicians to identify risk factors and mechanisms for mitigating vulnerability. Here we investigated behavioral predictors of high fear generalization, a core PTSD symptom, and its neural correlates longitudinally in rats. In a comprehensive behavioral test battery of emotional and cognitive function, pretrauma lower operant learning performance emerged as high predictor of fear generalization following trauma. Posttrauma operant training facilitated fear extinction, suggesting an overlap in neural circuits governing operant learning and fear expression. Neuronal activity mapping revealed significant changes in the medial prefrontal cortex (mPFC) in high fear generalizers, with alterations in CRH/VIP+ interneuron functioning. Silencing prefrontalCrhexpression after fear memory consolidation enhanced mPFC activation and reduced fear expression, favoring resilience. These findings highlight operant learning and mPFC alterations as vulnerability markers and mediators of excessive fear generalization, with implications for prevention and targeted therapy in PTSD.
Comparing physiological impacts of positive pressure ventilation versus self-breathing via a versatile cardiopulmonary model incorporating a novel alveoli opening mechanism
Authors: Cabeleira MT , Anand DV , Ray S , Black C , Ovenden NC , Diaz-Zuccarini V 
Published: March 2024

ABSTRACTMathematical models can be used to generate high-fidelity simulations of the cardiopulmonary system. Such models, when applied to real patients, can provide valuable insights into underlying physiological processes that are hard for clinicians to observe directly. In this work, we propose a novel modelling strategy capable of generating scenario-specific cardiopulmonary simulations to replicate the vital physiological signals clinicians use to determine the state of a patient. This model is composed of a tree-like pulmonary system that features a novel, non-linear alveoli opening strategy, based on the dynamics of balloon inflation, that interacts with the cardiovascular system via the thorax. A baseline simulation of the model is performed to measure the response of the system during spontaneous breathing which is subsequently compared to the same system under mechanical ventilation. To test the new lung opening mechanics and systematic recruitment of alveolar units, a positive end-expiratory pressure (PEEP) test is performed and its results are then compared to simulations of a deep spontaneous breath. The system displays a marked decrease in tidal volume as PEEP increases, replicating a sigmoidal curve relationship between volume and pressure. At high PEEP, cardiovascular function is shown to be visibly impaired, in contrast to the deep breath test where normal function is maintained.