To date, uterus transplantation is the only option for women with absolute uterine infertility, such as those with Rokitansky syndrome, to experience pregnancy and give birth. Despite the growing interest in uterus transplantation in recent years, several issues still require further research, including ischemia-reperfusion injury and its impact on graft quality and rejection. Recent literature has highlighted a thrombotic complication rate of up to 20% following uterus transplantation. This type of complication may result from hypoxia-induced endothelial cell damage, often leading to uterine graft rejection. Hypoxia is induced during static cold storage, which remains the gold standard for graft preservation in solid organ transplantation. Recently, dynamic preservation using machine perfusion has been shown to improve the long-term storage of conventional and marginal organs by reducing ischemic and hypoxic injury. In this protocol, we aim to describe every surgical step involved in porcine uterus procurement and dynamic preservation, based on both uterine pedicles, to enable the connection and initiation of the machine perfusion protocol.
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http://dx.doi.org/10.3791/67357 | DOI Listing |
During type 1 diabetes (T1D) progression, beta cells become dysfunctional and exhibit reduced first-phase insulin release. While this period of beta cell dysfunction is well established, its cause and underlying mechanism remain unknown. To address this knowledge gap, live human pancreas tissue slices were prepared from autoantibody- negative organ donors without diabetes (ND), donors positive for one or more islet autoantibodies (AAb+), and donors with T1D within 0-4 years of diagnosis (T1D+).
View Article and Find Full Text PDFBackground: Recent reports suggest increased myocardial iNOS expression leads to excessive protein -nitrosylation, contributing to the pathophysiology of HFpEF. However, the relationship between NO bioavailability, dynamic regulation of protein -nitrosylation by trans- and de-nitrosylases, and HFpEF pathophysiology has not been elucidated. Here, we provide novel insights into the delicate interplay between NO bioavailability and protein -nitrosylation in HFpEF.
View Article and Find Full Text PDFEur Spine J
January 2025
Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China.
Background: Spinal epidural arachnoid cysts (SEACs) are rare, non-neoplastic pathologies that can cause compressive myelopathy. Preoperative identification of the exact fistula location is crucial for minimally invasive management.
Methods: This single-center retrospective study included 27 patients with SEACs who underwent "double-needle puncture myelography" to precisely localize the fistula before minimally invasive surgery.
Sci Rep
January 2025
Scientific Affairs Department, Al-Mustaqbal University, Babylon, 51001, Iraq.
This study investigates the application of various neural network-based models for predicting temperature distribution in freeze drying process of biopharmaceuticals. For heat-sensitive biopharmaceutical products, freeze drying is preferred to prevent degradation of pharmaceutical compounds. The modeling framework is based on CFD (Computational Fluid Dynamics) and machine learning (ML).
View Article and Find Full Text PDFJ Med Internet Res
January 2025
Department of Primary Care Health Sciences, University of Oxford, Oxford, United Kingdom.
Background: The rapid shift to video consultation services during the COVID-19 pandemic has raised concerns about exacerbating existing health inequities, particularly for disadvantaged populations. Intersectionality theory provides a valuable framework for understanding how multiple dimensions of disadvantage interact to shape health experiences and outcomes.
Objective: This study aims to explore how multiple dimensions of disadvantage-specifically older age, limited English proficiency, and low socioeconomic status-intersect to shape experiences with digital health services, focusing on video consultations.
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