Publications by authors named "McGuirk S"

Article Synopsis
  • Hepatic artery complications (HACs) after pediatric liver transplantation can lead to significant health issues, and this study aims to understand how common they are, how they are managed, and what outcomes arise from these complications.
  • The research utilizes the international HEPATIC Registry, collecting data on pediatric patients under 18 who experienced HAC within the last 20 years, focusing on survival rates and treatment success.
  • Ethical approval will be obtained from all participating sites, and findings will be shared at conferences and in academic journals, with the study registered on ClinicalTrials.gov (NCT05818644).
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Background: Liver transplantation is the state-of-the-art curative treatment for end-stage liver disease. Imaging is a key element in the detection of postoperative complications. So far, limited data is available regarding the best radiologic approach to monitor children after liver transplantation.

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Article Synopsis
  • Liver transplantation is the primary treatment for end-stage liver disease, but there's limited information on the best imaging practices for monitoring children during the procedure.
  • A survey conducted by the European Society of Pediatric Radiology gathered feedback from 22 centers across 11 countries regarding their intraoperative imaging techniques.
  • Results showed that all centers use intraoperative ultrasound (US), mainly relying on color Doppler, but there's significant variation in how the ultrasound is conducted, including who operates the equipment and how often imaging is performed.
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Background: Liver transplantation is the state-of-the-art curative treatment in end-stage liver disease. Imaging is a key element for successful organ-transplantation to assist surgical planning. So far, only limited data regarding the best radiological approach to prepare children for liver transplantation is available.

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Article Synopsis
  • In solid tumors, the amount of medicine decreases the further you get from blood vessels, making it harder to treat cancer effectively.
  • Researchers found that when cancer cells are slowly exposed to low levels of drugs, they adapt and become resistant to stronger doses over time.
  • They discovered two specific proteins, SLC38A7 and SLC46A1, that help these resistant cancer cells grow; targeting these proteins could help improve cancer treatments and patient survival.
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Article Synopsis
  • - The study investigates portal vein obstruction (PVO) in pediatric liver transplant patients, focusing on its prevalence, treatment practices, and outcomes through a global collaboration of 25 medical centers.
  • - It utilizes a registry to gather data from patients diagnosed with PVO between 2001 and 2021, aiming to measure factors like treatment success and complications following interventions.
  • - Approved by an ethics board, the study plans to share findings in academic journals and conferences, contributing to the understanding of PVO management post-liver transplantation.
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Pediatric Budd-Chiari syndrome (BCS) is a rare cause of portal hypertension and liver disease in Europe and North America. In order to understand the long-term effect of radiological intervention on BCS we performed a single center retrospective review. Fourteen cases were identified; 6 of 14 (43%) had a congenital thrombophilia with many having multiple prothrombotic mutations.

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Skin plays central roles in systemic physiology, and it undergoes significant functional changes during aging. Members of the peroxisome proliferator-activated receptor-gamma coactivator (PGC-1) family (PGC-1s) are key regulators of the biology of numerous tissues, yet we know very little about their impact on skin functions. Global gene expression profiling and gene silencing in keratinocytes uncovered that PGC-1s control the expression of metabolic genes as well as that of terminal differentiation programs.

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Article Synopsis
  • * The study involved 100 youths (ages 5-30) with CKD to analyze changes in BMD and vascular health over time using various imaging techniques.
  • * Results indicated a decrease in trabecular BMD and a slight increase in vascular measurements, suggesting that despite potential BMD increase, young individuals with CKD can still develop vascular calcification.
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Aim: Ultrasound-guided (USG) percutaneous insertion of Broviac lines (cuffed tunnelled silastic central venous catheters, TCVC) has increasingly been adopted throughout the UK. However, vascular access remains a challenge in small babies and in some units is still performed by open cutdown. Our vascular access team, established in 2004, consists of consultant surgeons, anaesthetists and interventional radiologists, who provide all permanent vascular access by the USG technique.

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Background: Cardiovascular disease (CVD) is a common cause of morbidity and mortality even in young people with chronic kidney disease (CKD). We examined structural and functional CV changes in patients ˂30 years of age with CKD Stages 4 and 5 and on dialysis.

Methods: A total of 79 children and 21 young adults underwent cardiac computed tomography for coronary artery calcification (CAC), ultrasound for carotid intima-media thickness (cIMT), carotid-femoral pulse wave velocity (cfPWV) and echocardiography.

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Transmembrane glycoprotein NMB (GPNMB) is a prognostic marker of poor outcome in patients with triple-negative breast cancer (TNBC). Glembatumumab Vedotin, an antibody drug conjugate targeting GPNMB, exhibits variable efficacy against GPNMB-positive metastatic TNBC as a single agent. We show that GPNMB levels increase in response to standard-of-care and experimental therapies for multiple breast cancer subtypes.

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Background: Management algorithms of paediatric blunt abdominal solid organ injury (BASOI) are evolving to include interventional radiology, but there are few studies documenting the application and clinical outcomes of cases in children.

Methods: A retrospective case note review of all paediatric BASOI at a single Paediatric Major Trauma Centre was completed. CT scans and injuries have been retrospectively graded according to AAST guidelines.

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Chemotherapy resistance is a critical barrier in cancer treatment. Metabolic adaptations have been shown to fuel therapy resistance; however, little is known regarding the generality of these changes and whether specific therapies elicit unique metabolic alterations. Using a combination of metabolomics, transcriptomics, and functional genomics, we show that two anthracyclines, doxorubicin and epirubicin, elicit distinct primary metabolic vulnerabilities in human breast cancer cells.

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In a male neonate with bilateral hydroureteronephrosis, the most common surgical diagnosis is posterior urethral valves. This case report describes a male infant with the same presentation, but caused by a very uncommon congenital anomaly. The summation of different imaging modalities allowed a multidisciplinary team of colleagues to define the anatomy: bilateral duplex kidneys draining into separate urinary bladders.

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An adult male from Missouri sought care for fever, fatigue, and gastrointestinal symptoms. He had leukopenia and thrombocytopenia and was treated for a presumed tickborne illness. His condition deteriorated with respiratory and renal failure, lactic acidosis, and hypotension.

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Purpose: Craniosynostosis is the premature and pathological fusion of calvarial sutures. One modality of surgical treatment of syndromic craniosynostosis is posterior calvarial distraction (PCD). This can be either supratentorial or infratentorial.

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Congenital intrahepatic arterio-portal fistulae (cIAPF) are rare, high-flow vascular malformations that usually present with portal hypertension. They almost never cause heart failure, unless there is associated congenital heart disease or the ductus venosus in patent. We present an unusual case of IAPF in an 11-day-old boy, who presented with features of cardiac failure associated with increased N-terminal pro-brain natriuretic peptide (NT pro-BNP).

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Diagnostic and therapeutic innovations have changed the way we now approach liver tumours in children and adolescents. Novel imaging tools, increasing awareness, and surveillance has led to early diagnosis of benign and malignant liver tumours. Multidisciplinary interventions have favourably altered the natural course in some liver tumours.

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Article Synopsis
  • - The study investigated the anatomical characteristics of aortic arch anomalies linked to vascular rings, focusing on those that may lead to symptoms and require surgery.
  • - Conducted at a cardiac unit, the research included patients with diagnosed aortic arch anomalies between 2014 and 2018, using various imaging techniques to analyze conditions like Kommerell diverticulum.
  • - Findings indicated a significant number of patients with double aortic arch or aberrant subclavian arteries from a Kommerell diverticulum required surgical intervention, emphasizing the need for ongoing monitoring and further research on the implications of these conditions.
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Mitochondria are highly dynamic organelles. Alterations in mitochondrial dynamics are causal or are linked to numerous neurodegenerative, neuromuscular, and metabolic diseases. It is generally thought that cells with altered mitochondrial structure are prone to mitochondrial dysfunction, increased reactive oxygen species generation and widespread oxidative damage.

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DNA methylation is implicated in the acquisition of malignant phenotypes, and the use of epigenetic modulating drugs is a promising anti-cancer therapeutic strategy. 5-aza-2'deoxycytidine (decitabine, 5-azadC) is an FDA-approved DNA methyltransferase (DNMT) inhibitor with proven effectiveness against hematological malignancies and more recently triple-negative breast cancer (BC). Herein, genetic or pharmacological studies uncovered a hitherto unknown feedforward molecular link between DNMT1 and the estrogen related receptor α (ERRα), a key transcriptional regulator of cellular metabolism.

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