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Wang X, Guo Y, Cui T, Zhang T, Hu W, Liu R, Yin C. Telomerase reverse transcriptase restores pancreatic microcirculation profiles and attenuates endothelial dysfunction by inhibiting mitochondrial superoxide production: A potential target for acute pancreatitis therapy. Biomed Pharmacother 2023; 167:115576. [PMID: 37776643 DOI: 10.1016/j.biopha.2023.115576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/02/2023] Open
Abstract
BACKGROUND Acute pancreatitis (AP) is a potentially lethal disease related to prominent microcirculation dysfunction. Pancreatic microvascular endothelial dysfunction enhances oxidative stress with tissue damage. Increased superoxide production disrupts endothelial junction integrity and increases endothelial permeability. Endothelial mitochondrial ROS (mtROS) represent a major intracellular source of superoxide anions. The non-canonical function of telomerase reverse transcriptase (TERT) involves the maintenance of cellular redox homeostasis in somatic tissues. METHODS We investigated whether TERT restores microcirculation dysfunction and attenuates the endothelium injury by inhibiting superoxide production during AP progression. We established TERT transgenic and TERT knock-down mice and used cerulein (CER) and lipopolysaccharide (LPS) injections to induce AP models. In addition, we exposed HUVECs to LPS following TERT overexpression or silencing to explore the role of TERT in endothelial dysfunction. We also performed flow cytometry and confocal microscopy assays by using HUVECs. And a mtROS inhibitor, MitoTempo, was used to scavenge mitochondria superoxide and alkyl. RESULTS TERT transgenic mice were found to have restored pancreatic microcirculation profiles and microvascular endothelial morphology compared with wild-type mice under cerulein injection. In contrast, TERT silencing displayed the opposite effect in response to cerulein. Subsequently, we showed that TERT overexpression attenuates mtROS production and mitochondrial dysfunction during LPS-stimulated endothelial dysfunction. Furthermore, we found that TERT overexpression maintains the balance between mitochondrial contents and ATP level during endothelial dysfunction. In addition, the protective trend of MitoTempo is impeded after TERT silencing. CONCLUSION TERT restores pancreatic microcirculation dysfunction and attenuates microvascular endothelium lesions by inhibiting the increase of superoxide production and mitochondrial dysfunction.
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Affiliation(s)
- Xueyan Wang
- Department of Internal Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China; Peking University People's Hospital, Beijing 100044, China
| | - Yinan Guo
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Tianyu Cui
- Department of Internal Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Tingting Zhang
- Department of Internal Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Weikai Hu
- Department of Internal Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Ruixia Liu
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
| | - Chenghong Yin
- Department of Internal Medicine, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China; Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
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Vannier E, Dupont-Lucas C, Lagarde B, Menahem B, Chaigneau T, Piquet MA, Dupont B. Development of a Score for Predicting Severe Acute Pancreatitis at Admission. Pancreas 2022; 51:128-134. [PMID: 35404887 DOI: 10.1097/mpa.0000000000001984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES The identification of patients at risk of developing a severe form of acute pancreatitis is a major issue. The goal of this study was to identify parameters at admission associated with severe pancreatitis to develop a predictive severity score. METHODS We conducted a retrospective study at Caen University Hospital between January 2014 and December 2017, including 504 patients hospitalized for acute pancreatitis, of whom 74 had a severe form. We developed a predictive score named Admission Severe Acute Pancreatitis (ASAP) score based on parameters associated with a severe form in multivariate analysis. We validated our score in an independent validation cohort of 80 patients. RESULTS Hypothermia, low oxygen saturation or albumin levels, and high creatinine levels were significantly associated with severe pancreatitis. The ASAP score showed notable predictive accuracy (area under receiver operating characteristic, 0.82), which was significantly higher than Sequential Organ Failure Assessment, persistent Systemic Inflammatory Response Syndrome, and Balthazar. Using the -2.1742 threshold, the ASAP score had a sensitivity and specificity of 74% and a negative predictive value of 95%. These predictive performances for ASAP score were confirmed in the validation cohort. CONCLUSIONS The ASAP score demonstrates remarkable predictive accuracy in distinguishing severe forms of acute pancreatitis.
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Affiliation(s)
- Elise Vannier
- From the Departement d'Hepato-Gastroenterologie et Nutrition
| | | | - Benoît Lagarde
- From the Departement d'Hepato-Gastroenterologie et Nutrition
| | - Benjamin Menahem
- Service de Chirurgie Digestive, CHU de Caen Normandie, Normandie Université, UNICAEN, Caen, France
| | | | | | - Benoît Dupont
- From the Departement d'Hepato-Gastroenterologie et Nutrition
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Bálint ER, Fűr G, Kiss L, Németh DI, Soós A, Hegyi P, Szakács Z, Tinusz B, Varjú P, Vincze Á, Erőss B, Czimmer J, Szepes Z, Varga G, Rakonczay Z. Assessment of the course of acute pancreatitis in the light of aetiology: a systematic review and meta-analysis. Sci Rep 2020; 10:17936. [PMID: 33087766 PMCID: PMC7578029 DOI: 10.1038/s41598-020-74943-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022] Open
Abstract
The main causes of acute pancreatitis (AP) are biliary disease, alcohol consumption, hypertriglyceridaemia (HTG) and endoscopic retrograde cholangiopancreatography (ERCP). The aim of this meta-analysis was to evaluate the effects of these aetiological factors on the severity and outcome of AP. Pubmed and Embase were searched between 01/01/2012 and 31/05/2020. Included articles involved adult alcoholic, biliary, HTG- or post-ERCP AP (PAP) patients. Primary outcome was severity, secondary outcomes were organ failures, intensive care unit admission, recurrence rate, pancreatic necrosis, mortality, length of hospital stay, pseudocyst, fluid collection and systematic inflammatory response syndrome. Data were analysed from 127 eligible studies. The risk for non-mild (moderately severe and severe) condition was the highest in HTG-induced AP (HTG-AP) followed by alcoholic AP (AAP), biliary AP (BAP) and PAP. Recurrence rate was significantly lower among BAP vs. HTG-AP or AAP patients (OR = 2.69 and 2.98, 95% CI 1.55–4.65 and 2.22–4.01, respectively). Mortality rate was significantly greater in HTG-AP vs. AAP or BAP (OR = 1.72 and 1.50, 95% CI 1.04–2.84 and 0.96–2.35, respectively), pancreatic necrosis occurred more frequently in AAP than BAP patients (OR = 1.58, 95% CI 1.08–2.30). Overall, there is a potential association between aetiology and the development and course of AP. HTG-AP is associated with the highest number of complications. Furthermore, AAP is likely to be more severe than BAP or PAP. Greater emphasis should be placed on determining aetiology on admission.
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Affiliation(s)
- Emese Réka Bálint
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Gabriella Fűr
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Lóránd Kiss
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Dávid István Németh
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Alexandra Soós
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Clinical Medicine Doctoral School, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,MTA-SZTE Momentum Translational Gastroenterology Research Group, Szeged, Hungary
| | - Zsolt Szakács
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Benedek Tinusz
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Péter Varjú
- First Department of Medicine, University of Pécs, Pécs, Hungary
| | - Áron Vincze
- First Department of Medicine, University of Pécs, Pécs, Hungary
| | - Bálint Erőss
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - József Czimmer
- Institute for Translational Medicine and Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Zoltán Szepes
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Gábor Varga
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - Zoltán Rakonczay
- Department of Pathophysiology, University of Szeged, Szeged, Hungary.
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Smirnova E, Shulkina S, Loran E, Podtaev S, Antonova N. Relationship between skin blood flow regulation mechanisms and vascular endothelial growth factor in patients with metabolic syndrome. Clin Hemorheol Microcirc 2018; 70:129-142. [DOI: 10.3233/ch-170247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- E. Smirnova
- Perm State Medical University, Perm, Russia
- Institute of Continuous Media Mechanics, Russian Academy of Sciences Ural Branch, Korolyova str, Perm, Russia
| | - S. Shulkina
- Perm State Medical University, Perm, Russia
- Institute of Continuous Media Mechanics, Russian Academy of Sciences Ural Branch, Korolyova str, Perm, Russia
| | - E. Loran
- Perm State Medical University, Perm, Russia
- Institute of Continuous Media Mechanics, Russian Academy of Sciences Ural Branch, Korolyova str, Perm, Russia
| | - S. Podtaev
- Institute of Continuous Media Mechanics, Russian Academy of Sciences Ural Branch, Korolyova str, Perm, Russia
| | - N. Antonova
- Institute of Mechanics, Bulgarian Academy of Sciences, Sofia, Bulgaria
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Kodirov SA, Psyrakis D, Brachmann J, Zhuravlev VL. Limulus and heart rhythm. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2018; 331:61-79. [PMID: 30251467 DOI: 10.1002/jez.2235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 01/08/2023]
Abstract
Great interest in the comparative physiology of hearts and their functions in Animalia has emerged with classic papers on Limulus polyphemus and mollusks. The recurrent cardiac activity-heart rate-is the most important physiological parameter and when present the kardia (Greek) is vital to the development of entire organs of the organisms in the animal kingdom. Extensive studies devoted to the regulation of cardiac rhythm in invertebrates have revealed that the basics of heart physiology are comparable to mammals. The hearts of invertebrates also beat spontaneously and are supplied with regulatory nerves: either excitatory or inhibitory or both. The distinct nerves and the source of excitation/inhibition at the level of single neurons are described for many invertebrate genera. The vertebrates and a majority of invertebrates have myogenic hearts, whereas the horseshoe crab L. polyphemus and a few other animals have a neurogenic cardiac rhythm. Nevertheless, the myogenic nature of heartbeat is precursor, because the contraction of native and stem-cell-derived cardiomyocytes does occur in the absence of any neural elements. Even in L. polyphemus, the heart rhythm is myogenic at embryonic stages.
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Affiliation(s)
- Sodikdjon A Kodirov
- Department of General Physiology, Saint Petersburg University, Saint Petersburg, Russia.,Department of Neurobiology, Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia.,Department of Molecular Biology and Genetics, Almazov Federal Heart, Blood and Endocrinology Centre, Saint Petersburg, Russia.,Laboratory of Emotions' Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.,Department of Cardiology, University Hospital, Heidelberg, Germany
| | - Dimitrios Psyrakis
- Department of Cardiology and Angiology I, Heart Center Freiburg University, Freiburg, Germany
| | - Johannes Brachmann
- Department of Cardiology, Klinikum Coburg, Teaching Hospital of the University of Würzburg, Coburg, Germany.,Department of Cardiology, University Hospital, Heidelberg, Germany
| | - Vladimir L Zhuravlev
- Department of General Physiology, Saint Petersburg University, Saint Petersburg, Russia.,Department of Cardiology, University Hospital, Heidelberg, Germany
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