A case report is given of a 24 year old patient who had relapsing massive gastrointestinal bleeding from varices in the duodenum and jejunum, due to occlusion of the mesenterial vein. There is only one similar case described in the literature. 97 patients with varices of the small intestine have been described; in 41 of these cases there was extrahepatic, in 47 intrahepatic portal hypertension. In 60 of the 91 cases varices were found in the duodenum, less frequently in the ileum or jejunum too. In another 10 cases varices had formed around an ileostomy. In 1/3 of all cases abdominal surgery had preceded formation of varices in the small intestine. Pathogenesis, diagnosis and therapy are discussed.
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S Afr J Surg
December 2024
Division of Surgery, Tygerberg Hospital, Stellenbosch University, South Africa.
Background: Bowel trauma, encompassing injuries to the small and large intestine, represents a significant medical challenge due to its potential for morbidity and mortality. Management of bowel injuries remains surgical, but multiple factors influence the outcome in these patients. This study provides an in-depth analysis of the high-risk features of hollow visceral trauma in the ICU setting and the corresponding mortality rates, shedding light on the critical factors that influence outcomes in these cases.
View Article and Find Full Text PDFBMC Med Genomics
January 2025
Ultrasound Diagnosis Department, Maternal and Child Health Hospital of Hubei Province, Wuhan, 430070, China.
Background: The clinical manifestations of PI4KA-related disorders are characterized by considerable variability, predominantly featuring neurological impairments, gastrointestinal symptoms, and a combined immunodeficiency. The aim of this study was to delineate the novel spectrum of PI4KA variants detected prenatally and to assess their influence on fetal development.
Methods: A thorough fetal ultrasound screening was conducted, supplemented by both antenatal and post-abortion magnetic resonance imaging (MRI) studies.
Drug Metab Dispos
January 2025
Department of Pharmaceutics, School of Pharmacy, University of Washington, Seattle, Washington. Electronic address:
To further the development of an in vitro model that faithfully recapitulates drug disposition of orally administered drugs, we investigated the utility of human enteroid monolayers to simultaneously assess intestinal drug absorption and first-pass metabolism processes. We cultured human enteroid monolayers from 3 donors, derived via biopsies containing duodenal stem cells that were propagated and then differentiated atop permeable Transwell inserts, and confirmed transformation into a largely enterocyte population via RNA sequencing analysis and immunocytochemistry (ICC) assays. Proper cell morphology was assessed and confirmed via bright field microscopy and ICC imaging of tight junction proteins and other apically and basolaterally localized proteins.
View Article and Find Full Text PDFVet Pathol
January 2025
University of California, Davis, San Bernardino, CA.
Intoxication of sheep and cattle by recently occurred in Uruguay and Argentina in association with severe drought. Although the disease was experimentally reproduced in sheep in the 1970s, there is limited information on clinical and pathologic findings of sheep experimentally intoxicated by this beetle. Here, we described the clinical, gross, and microscopic findings in 3 sheep orally dosed with (treatment group, TG) and in 2 control sheep (control group, CG) dosed with distilled water.
View Article and Find Full Text PDFFront Cell Infect Microbiol
January 2025
College of Public Health, North China University of Science and Technology, Tangshan, China.
Enterohemorrhagic (EHEC) is a contagious foodborne pathogen that specifically colonizes the human large intestine, which is regulated by different environmental stimuli within the gut. Transcriptional regulation of EHEC virulence and infection has been extensively studied, while the posttranscriptional regulation of these processes by small RNAs (sRNAs) remains not fully understood. Here we present a virulence-regulating pathway in EHEC O157:H7, in which the sRNA EvrS binds to and destabilizes the mRNA of Z2269, a novel transcriptional regulator.
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