Publications by authors named "Sanchez P"

Background: COVID-19 patients exhibit higher incidence of thrombosis in arteries and veins, including those in lungs. Vasa vasorum, which support large blood vessels, have shown involvement in these pathologic processes.

Methods: To further explore the extent of microvascular damage caused by COVID-19 infection, we examined resected main, right, or left pulmonary artery specimens from patients undergoing bilateral lung transplantation for COVID-19- or non-COVID-19-induced pulmonary fibrosis compared with organ donors by histologic and immunohistologic analyses.

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Firearm-related scenarios can be highly complex, involving multiple shooters, firearms, types of ammunition, victims, and various impact zones. Obtaining the maximum amount of information to connect each piece of the puzzle is crucial for resolving these cases. Currently, new tools are being developed in the forensic field that facilitate both fieldwork and laboratory analysis, enabling the estimation of trajectories, identification of shooters, and more.

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Lineage tracing has significantly advanced our comprehension in many areas of biology, such as development or immunity, by precisely measuring cellular processes like migration, division, or differentiation across labeled cells and their progeny. Traditional recombinase-based prospective lineage tracing is limited by the need for a priori cell type information and is constrained in the numbers of clones it can simultaneously track. In this sense, clonal lineage tracing with integrated random barcodes offers a robust alternative, enabling researchers to label and track a vast array of cells and their progeny over time.

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Aims: To develop and validate a screening tool to identify patients with cardiovascular disease at risk of poor oral health and requiring referrals.

Design: This study was part of a larger pilot study involving a cross-sectional survey and an oral health assessment conducted with patients with cardiovascular disease.

Methods: A four-item screening tool was developed by an expert panel and validated through a cross-sectional survey of patients with cardiovascular disease.

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Adolescent dating violence (ADV) research has neglected the environmental factors at play in contexts of perpetration. This study, conducted in Chile, investigated the socio-cognitive processes inherent to the relationship between child abuse and ADV perpetration by examining the association between child abuse, impulsivity, reactive aggression, proactive aggression, attitudes that rationalize or justify ADV, and actual ADV perpetration. Data were collected from 655 adolescents using self-reported measures of child abuse, impulsivity, reactive and proactive aggression, attitudes justifying ADV, and ADV perpetration using structural equation modeling.

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This work presents the first record of the family Mythicomyiidae from Peru, based on the descriptions of five new species of Mythicomyia Coquillett, 1893: Mythicomyia huk sp. nov. from Amazonas, Mythicomyia iskay sp.

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Recent research suggests that a polygeneric immunogen made from the venoms of the most medically important viperid and elapid snakes in sub-Saharan Africa could elicit a broader antibody response in horses compared to the current EchiTAb-plus-ICP antivenom, especially against neurotoxic elapid venoms. To test this, 25 horses that have been regularly immunized to produce this antivenom were reimmunized with an immunogen containing 22 venoms from various snake species from the genera , , , and both spitting and non-spitting . The plasma collected from these horses was processed using the caprylic acid method to produce an industrial-scale freeze-dried antivenom.

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 Association between global platelet function and the risk of venous thromboembolic disease (VTE) has been proposed, though the mechanisms do not involve increased platelet aggregation. However, platelet adhesiveness has not been systematically explored in VTE patients.  To evaluate platelet adhesive functions in VTE patients.

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Farnesoid X receptor α (FXRα, NR1H4) is a bile acid-activated nuclear receptor that regulates the expression of glycolytic and lipogenic target genes by interacting with the 9-cis-retinoic acid receptor α (RXRα, NR2B1). Along with cofactors, the FXRα proteins reported thus far in humans and rodents have been observed to regulate both isoform (α1-4)- and tissue-specific gene expression profiles to integrate energy balance and metabolism. Here, we studied the biological functions of an FXRα naturally occurring spliced exon 5 isoform (FXRαse5) lacking the second zinc-binding module of the DNA-binding domain.

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Purpose: Delayed chest closure (DCC) during lung transplantation (LTx) is a controversial surgical approach that lacks research in systemic sclerosis (SSc) patients. We investigated outcomes, clinical risk factors, and CT-based lung size-matching parameters associated with DCC in SSc recipients.

Methods: This retrospective study included 92 SSc recipients (age 51 years ± 10, 56/92 (61.

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Background: Donor-recipient heart size matching is crucial in heart transplantation; however, the often-used predicted heart mass (PHM) ratio may be inaccurate in the setting of obesity.

Objectives: In this study, the authors sought to investigate the association between echocardiographically measured donor left ventricular mass (LVM) for heart size matching and the risk of the primary 1-year composite outcome of death or retransplantation.

Methods: The Donor Heart Study was a prospective, multicenter, observational cohort study that collected echocardiograms from brain-dead donors.

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Article Synopsis
  • - The study investigates the effects of extracorporeal membrane oxygenation (ECMO) on airway complications in patients with severe primary graft dysfunction (PGD3) following lung transplantation, highlighting the potential benefits of early ECMO use.
  • - Results showed that patients on veno-venous ECMO (VV-ECMO) had lower instances of PGD3 and reduced risk of chronic allograft dysfunction compared to those solely on mechanical ventilation (MV).
  • - The findings suggest VV-ECMO may help prevent ischemic reperfusion injury and lower the severity of airway complications post-transplantation, indicating a need for further research to understand the underlying mechanisms.
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Multiorgan transplantation is offered to a selected group of patients every year. The sequence in which organs are transplanted depends on ischemic time graft tolerance and the sickest organ first strategy. In the case of Lung-Liver transplantation, lung allografts are usually implanted before the liver.

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Congenital CMV infection is the leading nongenetic cause of sensorineural hearing loss worldwide, yet most parents have never heard of it. The majority of infected newborns have no clinical signs of infection, although a substantial proportion may have hearing loss at birth or develop it later in life. As antiviral treatment with ganciclovir or valganciclovir initiated in the first month of age improves audiologic outcomes, there is an urgent need for timely identification of infected neonates.

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Localizing the exact pathological regions in a given medical scan is an important imaging problem that traditionally requires a large amount of bounding box ground truth annotations to be accurately solved. However, there exist alternative, potentially weaker, forms of supervision, such as accompanying free-text reports, which are readily available. The task of performing localization with textual guidance is commonly referred to as phrase grounding.

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This case study describes a female patient in her late 70s who developed autoimmune cholangitis a year after finishing 35 cycles of pembrolizumab for the treatment of her non-small cell lung cancer. The diagnosis was initially missed and delayed; the patient's agoraphobia and the COVID-19 pandemic were noted as contributing factors.

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Late-onset sepsis (LOS) in the neonatal intensive care unit (NICU) causes significant morbidity and mortality, yet guidance on empiric management is limited. We surveyed NICUs across Canada and the United States regarding their empiric antimicrobial regimens for LOS, thereby identifying large practice variations and high rates of empiric vancomycin use.

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Article Synopsis
  • The study analyzed outcomes of lung transplantation using ex vivo lung perfusion (EVLP) in high-risk recipients, defined by specific medical conditions.
  • Results indicated that high-risk candidates faced a significantly greater risk of dying on the waitlist, and EVLP was linked to higher rates of acute kidney injury, increased mortality on admission, and longer hospital stays compared to standard lung procurement.
  • Despite the associated complications and shorter survival rates for portable EVLP, the study suggests this technique remains a viable option due to the high mortality risk for patients on the transplant waitlist.
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Pneumatosis intestinalis (PI) and pneumoperitoneum are some of the complications after lung transplantation (LT). But only limited reports are published. The purpose of this study is to review our experience and perform a systematic review to discuss the possible causes, risk factors, and management.

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The endothelial glycocalyx (eGC) is a carbohydrate-rich layer on the vascular endothelium, and its damage can lead to endothelial and organ dysfunction. Heparanase (HPSE) degrades the eGC in response to cellular stress, but its role in organ dysfunction remains unclear. This study investigates HPSE's role in lung ischemia-reperfusion (I/R) injury.

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Objective: Lung transplantation is a complex surgical procedure performed by specialized teams. Practice changes to eliminate overnight lung transplants were implemented at our center and patient outcomes were evaluated.

Methods: Patient and donor organ selection were performed in the standard fashion.

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Article Synopsis
  • The study compares two anticoagulation protocols used during intraoperative VA-ECMO support in double lung transplant patients from 2016 to 2023.
  • One protocol used a high-target activated clotting time (ACT) while the other used a low-dose heparin approach with a TXA infusion.
  • Results showed that the low heparin group had shorter surgery times and less need for blood products, with no significant differences in post-operative complications or severe primary graft dysfunction rates.
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