Acute pancreatitis (AP) is a familiar emergency of digestive system characterized by pancreatic inflammation. Lonicerin (LCR) has been reported to exert anti-inflammatory and immunomodulatory characteristics in several inflammatory diseases. Nevertheless, its role and mechanism involved in AP are still unknown. This study was designed to explore the protective effect and potential mechanism of LCR in AP. In this study, LCR and ferrostatin-1 alleviated, but erastin aggravated caerulein (CAE) exposure-induced cytotoxicity and reduction of cell viability in AR42J cells. LCR exhibited a protective role in CAE-treated AR42J cells, as evidenced by alleviation of apoptosis, inflammation, and ferroptosis. Mechanistically, LCR decreased the phosphorylation level of nuclear factor-kappa B p65 and increased the levels of silent information regulator 1 (SIRT1) and glutathione peroxidase 4 (GPX4) in CAE-treated AR42J cells. Furthermore, functional rescue experiments manifested that knockdown of SIRT1 partially negated the inhibitory action of LCR against CAE-induced apoptosis, inflammation, and ferroptosis in AR42J cells. Overall, LCR mitigates apoptosis, inflammation, and ferroptosis in CAE-exposed AR42J cells, which is related to the activation of the SIRT1/GPX4 signaling pathway.
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http://dx.doi.org/10.1016/j.taap.2024.117136 | DOI Listing |
EJNMMI Radiopharm Chem
December 2024
Department of Nuclear Engineering, University of Tennessee, Knoxville, Knoxville, TN, 37996, USA.
Background: Neuroendocrine tumors (NETs) are clinically diverse types of tumors that can arise anywhere in the body. Previous studies have shown that somatostatin receptors (SSTRs) are overexpressed on NET cell membranes relative to healthy tissue, allowing for tumor targeting through radiolabeled somatostatin analogs (SSAs). This work aims to develop a novel Zr-labeled tracer incorporating the SSA, octreotide (TOC), for positron emission tomography (PET) imaging of SSTR + NETs and predictive dosimetry calculations, leveraging the excellent nuclear (t = 3.
View Article and Find Full Text PDFInflammation
December 2024
Department of Emergency Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China.
Acute pancreatitis (AP) is a common acute inflammatory abdominal condition. Severe acute pancreatitis (SAP) can provoke a systemic inflammatory response and lead to multiple organ failure. The S100A9 protein, recognized as a major inflammatory biomarker, plays a significant role in both infection and inflammatory responses.
View Article and Find Full Text PDFEur J Nucl Med Mol Imaging
December 2024
Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, 8093, Switzerland.
Purpose: With the growing interest in exploring radiolanthanides for nuclear medicine applications, the question arises as to whether they are generally interchangeable without affecting a biomolecule's pharmacokinetic properties. The goal of this study was to investigate similarities and differences of four (radio)lanthanides simultaneously applied as complexes of biomolecules or in ionic form.
Methods: Inductively coupled plasma mass spectrometry (ICP-MS) was employed for the simultaneous detection of four lanthanides (Ln = lutetium, terbium, gadolinium and europium) in biological samples.
FASEB J
December 2024
The Second Department of General Surgery, Yunnan University Affiliated Hospital, Kunming, Yunnan, P.R. China.
As a common digestive disease, acute pancreatitis (AP) often threatens the life of patients. Bone marrow mesenchymal stem cells (BMSCs) derived exosomes have exhibited some benefits for AP. However, the mechanism remains unclear and deserves to be further investigated.
View Article and Find Full Text PDFKaohsiung J Med Sci
November 2024
Emergency Department, Zhongshan Hospital of Xiamen University, Xiamen, Fujian, China.
Pancreatitis is a severe inflammatory condition characterized by damage to the pancreas. Sterol o-acyltransferase 2 (SOAT2) has been reported to aggravate acute pancreatitis, however, the underlying mechanism remains to be elucidated. Rat pancreatic exocrine cells (AR42J) were treated with caerulein to induce pancreatitis-like cellular injury.
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