Synthetic analogues of L-enkephalin--tageflar and dalargin were studied for the treatment of experimentally-induced pancreatitis of rats. It was concluded that morphometric features of an intact part of the pancreas were not significantly changed with the use of tageflar. The intensity of 14C-leucine inclusion in the proteins of an intact part of the pancreas was strongly suppressed and the cytoplasm of exocrine pancreocytes was overloaded with zymogen granules. With the use of dalargin, a moderate hypertrophy of exocrine pancreocytes and intensification of 14C-leucine inclusion developed gradually. The number and disposition of zymogen granules were not significantly changed, as compared to acute pancreatitis. Both drugs disturbed the process of acinar reconstruction into tubular complexes in the marginal areas.
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J Magn Reson Imaging
January 2025
High Magnetic Field Laboratory, CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.
Background: Pancreatic damage is a common digestive system disease with no specific drugs. Static magnetic field (SMF), the key component of magnetic resonance imaging (MRI), has demonstrated prominent effects in various disease models.
Purpose: To study the effects of 0.
Mol Cell Biochem
January 2025
Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran.
Chronic/heavy exposure with ethanol is associated with risk of type 2 diabetes, due to β-cells dysfunction. It has been reported that ethanol can induce oxidative stress directly or indirectly by involvement of mitochondria. We aimed to explore the protective effects of the crocin/gallic acid/L-alliin as natural antioxidants separately on ethanol-induced mitochondrial damage.
View Article and Find Full Text PDFMetabolism
February 2025
Novo Nordisk Foundation Center for Basic Metabolic Research and Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. Electronic address:
Aims: A number of studies have suggested that pancreatic α cells produce intact GLP-1, thereby constituting a gut-independent paracrine incretin system. However, the debate on whether human α cells contain intact GLP-1 and whether this relates to the presence of diabetes is still ongoing. This study aimed to determine the presence of proglucagon-derived peptides, including GLP-1 isoforms, in pancreas biopsies obtained during partial pancreatectomy from metabolically profiled human donors, stratified according to pre-surgery glucose tolerance.
View Article and Find Full Text PDFClin Transl Gastroenterol
December 2024
Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran .
Introduction: The morphology of the major papilla plays a crucial role in the selection of the cannulation method for the common bile duct during endoscopic retrograde cholangiopancreatography. Nevertheless, there is limited evidence available that compares the efficacy and safety of cannulation approaches in certain papilla morphologies. The aim of this study was to assess the safety and effectiveness of 2 cannulation methods, including primary needle-knife fistulotomy (pNKF) and standard transpapillary (STP), in patients with long-size papilla.
View Article and Find Full Text PDFArXiv
October 2024
Medical University of Vienna, Center for physiology and pharmacology, Vienna, Austria.
Calcium signals in pancreatic cells collectives show a sharp transition from uncorrelated to correlated state resembling a phase transition as the slowly increasing glucose concentration crosses the tipping point. However, the exact nature or the order of this phase transition is not well understood. Using confocal microscopy to record the collective calcium activation of cells in an intact islet under changing glucose concentration in increasing and then decreasing way, we first show that in addition to the sharp transition, the coordinated calcium response exhibits a hysteresis indicating a critical, first order transition.
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