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Bostancı H, Erel S, Küçük A, Kip G, Sezen ŞC, Gokgoz S, Atlı M, Aktepe F, Dikmen K, Arslan M, Kavutçu M. Dexmedetomidine's Effects on the Livers and Kidneys of Rats with Pancreatic Ischemia-Reperfusion Injury. Drug Des Devel Ther 2024; 18:1785-1797. [PMID: 38828020 PMCID: PMC11141764 DOI: 10.2147/dddt.s441773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 05/13/2024] [Indexed: 06/05/2024] Open
Abstract
Objective Pancreatic surgeries inherently cause ischemia-reperfusion (IR) injury, affecting not only the pancreas but also distant organs. This study was conducted to explore the potential use of dexmedetomidine, a sedative with antiapoptotic, anti-inflammatory, and antioxidant properties, in mitigating the impacts of pancreatic IR on kidney and liver tissues. Methods A total of 24 rats were randomly divided into four groups: control (C), dexmedetomidine (D), ischemia reperfusion (IR), and dexmedetomidine ischemia reperfusion (D-IR). Pancreatic ischemia was induced in the IR and D-IR groups. Dexmedetomidine was administered intraperitoneally to the D and D-IR groups. Liver and kidney tissue samples were subjected to microscopic examinations after hematoxylin and eosin staining. The levels of thiobarbituric acid reactive substances (TBARS), aryllesterase (AES), catalase (CAT), and glutathione S-transferase (GST) enzyme activity were assessed in liver and kidney tissues. The serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), blood urea nitrogen (BUN), and creatinine were measured. Results A comparison of the groups revealed that the IR group exhibited significantly elevated TBARS (p < 0.0001), AES (p = 0.004), and CAT enzyme activity (p < 0.0001) levels in the liver and kidney compared to groups C and D. Group D-IR demonstrated notably reduced histopathological damage (p < 0.05) and low TBARS (p < 0.0001), AES (p = 0.004), and CAT enzyme activity (p < 0.0001) in the liver and kidney as well as low AST and ALT activity levels (p < 0.0001) in the serum compared to the IR group. Conclusion The preemptive administration of dexmedetomidine before pancreatic IR provides significant protection to kidney and liver tissues, as evidenced by the histopathological and biochemical parameters in this study. The findings underscored the potential therapeutic role of dexmedetomidine in mitigating the multiorgan damage associated with pancreatic surgeries.
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Affiliation(s)
- Hasan Bostancı
- Gazi University Faculty of Medicine, Department of General Surgery, Ankara, Turkey
| | - Selin Erel
- Gazi University Faculty of Medicine Department of Anesthesiology and Reanimation, Ankara, Turkey
| | - Ayşegül Küçük
- Kutahya Health Sciences University Faculty of Medicine, Department of Physiology, Kutahya, Turkey
| | - Gülay Kip
- Gazi University Faculty of Medicine Department of Anesthesiology and Reanimation, Ankara, Turkey
| | - Şaban Cem Sezen
- Kırıkkale University Faculty of Medicine, Department of Histology and Embryology, Kırıkkale, Turkey
| | - Seda Gokgoz
- Gazi University Faculty of Medicine, Department of Medical Biochemistry, Ankara, Turkey
| | - Muharrem Atlı
- Kırıkkale University Faculty of Medicine, Department of Histology and Embryology, Kırıkkale, Turkey
| | - Feyza Aktepe
- Gazi University Faculty of Medicine Department of Anesthesiology and Reanimation, Ankara, Turkey
| | - Kursat Dikmen
- Gazi University Faculty of Medicine, Department of General Surgery, Ankara, Turkey
| | - Mustafa Arslan
- Gazi University Faculty of Medicine Department of Anesthesiology and Reanimation, Ankara, Turkey
- Gazi University, Life Sciences Application and Research Center, Ankara, Turkey
- Gazi University, Laboratory Animal Breeding and Experimental Research Center (GUDAM), Ankara, Turkey
| | - Mustafa Kavutçu
- Gazi University Faculty of Medicine, Department of Medical Biochemistry, Ankara, Turkey
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Tsentsevitsky AN, Khuzakhmetova VF, Bukharaeva EA, Petrov AM. The Mechanism of α2 adrenoreceptor-dependent Modulation of Neurotransmitter Release at the Neuromuscular Junctions. Neurochem Res 2024; 49:453-465. [PMID: 37897557 DOI: 10.1007/s11064-023-04052-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
α2-Adrenoreceptors (ARs) are main Gi-protein coupled autoreceptors in sympathetic nerve terminals and targets for dexmedetomidine (DEX), a widely used sedative. We hypothesize that α2-ARs are also potent regulators of neuromuscular transmission via G protein-gated inwardly rectifying potassium (GIRK) channels. Using extracellular microelectrode recording of postsynaptic potentials, we found DEX-induced inhibition of spontaneous and evoked neurotransmitter release as well as desynchronization of evoked exocytotic events in the mouse diaphragm neuromuscular junction. These effects were suppressed by SKF-86,466, a selective α2-AR antagonist. An activator of GIRK channels ML297 had the same effects on neurotransmitter release as DEX. By contrast, inhibition of GIRK channels with tertiapin-Q prevented the action of DEX on evoked neurotransmitter release, but not on spontaneous exocytosis. The synaptic vesicle exocytosis is strongly dependent on Ca2+ influx through voltage-gated Ca2+ channels (VGCCs), which can be negatively regulated via α2-AR - GIRK channel axis. Indeed, inhibition of P/Q-, L-, N- or R-type VGCCs prevented the inhibitory action of DEX on evoked neurotransmitter release; antagonists of P/Q- and N-type channels also suppressed the DEX-mediated desynchronization of evoked exocytotic events. Furthermore, inhibition of P/Q-, L- or N-type VGCCs precluded the frequency decrease of spontaneous exocytosis upon DEX application. Thus, α2-ARs acting via GIRK channels and VGCCs (mainly, P/Q- and N-types) exert inhibitory effect on the neuromuscular communication by attenuating and desynchronizing evoked exocytosis. In addition, α2-ARs can suppress spontaneous exocytosis through GIRK channel-independent, but VGCC-dependent pathway.
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Affiliation(s)
- Andrei N Tsentsevitsky
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky St, Kazan, 420111, RT, Russia
| | - Venera F Khuzakhmetova
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky St, Kazan, 420111, RT, Russia
| | - Ellya A Bukharaeva
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky St, Kazan, 420111, RT, Russia
| | - Alexey M Petrov
- Laboratory of Biophysics of Synaptic Processes, Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevsky St, Kazan, 420111, RT, Russia.
- Kazan State Medical University, 49 Butlerova St, Kazan, 420012, RT, Russia.
- Kazan Federal University, 18 Kremlyovskaya Street, Kazan, 420008, Russia.
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Chen QC, Zhang Y. The Role of NPY in the Regulation of Bone Metabolism. Front Endocrinol (Lausanne) 2022; 13:833485. [PMID: 35273572 PMCID: PMC8902412 DOI: 10.3389/fendo.2022.833485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Bone diseases are the leading causes of disability and severely compromised quality of life. Neuropeptide Y (NPY) is a multifunctional neuropeptide that participates in various physiological and pathological processes and exists in both the nerve system and bone tissue. In bone tissue, it actively participates in bone metabolism and disease progression through its receptors. Previous studies have focused on the opposite effects of NPY on bone formation and resorption through paracrine modes. In this review, we present a brief overview of the progress made in this research field in recent times in order to provide reference for further understanding the regulatory mechanism of bone physiology and pathological metabolism.
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Affiliation(s)
- Qing-Chang Chen
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yan Zhang
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Yan Zhang,
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Che J, Xu C, Wu Y, Jia P, Han Q, Ma Y, Wang X, Zheng Y. MiR-1290 promotes myoblast differentiation and protects against myotube atrophy via Akt/p70/FoxO3 pathway regulation. Skelet Muscle 2021; 11:6. [PMID: 33722298 PMCID: PMC7958887 DOI: 10.1186/s13395-021-00262-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/28/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Sarcopenia is a common skeletal disease related to myogenic disorders and muscle atrophy. Current clinical management has limited effectiveness. We sought to investigate the role of miR-1290 in myoblast differentiation and muscle atrophy. METHODS By transfecting miR-1290 into C2C12 cells, we investigated whether miR-1290 regulates myogenesis and myotube atrophy via AKT/P70 signaling pathway. MHC staining was performed to assess myoblast differentiation. Differentiation-related MHC, Myod, and Myog protein levels, and atrophy-related MuRF1 and atrogin-1 were explored by western blot. An LPS-induced muscle atrophy rat model was developed. RT-PCR was conducted to analyze miR-1290 serum levels in muscle atrophy patients and normal controls (NCs). RESULTS The miR-1290 transfection increased MHC-positive cells and MHC, Myod, and Myog protein levels in the miR-1290 transfection group, demonstrating that miR-1290 promoted C2C12 myoblast differentiation. Myotube diameter in the miR-1290 transfection group was higher than in the TNF-α-induced model group. Western blot analysis showed decreased MuRF1 and atrogin-1 levels in the miR-1290 transfection group compared with the model group, demonstrating that miR-1290 protected against myoblast cellular atrophy. Luciferase assay and western blot analysis showed that miR-1290 regulation was likely caused by AKT/p70/FOXO3 phosphorylation activation. In the LPS-induced muscle atrophy rat model, miR-1290 mimics ameliorated gastrocnemius muscle loss and increased muscle fiber cross-sectional area. Clinically, miR-1290 serum level was significantly decreased in muscle atrophy patients. CONCLUSIONS We found that miR-1290 enhances myoblast differentiation and inhibits myotube atrophy through Akt/p70/FoxO3 signaling in vitro and in vivo. In addition, miR-1290 may be a potential therapeutic target for sarcopenia treatment.
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Affiliation(s)
- Ji Che
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China
| | - Cuidi Xu
- Department of Osteoporosis and Bone Disease, Huadong Hospital, Research Section of Geriatric Metabolic Bone Disease, Shanghai Geriatric Institute, Shanghai, China
| | - Yuanyuan Wu
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China
| | - Peiyu Jia
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China
| | - Qi Han
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China
| | - Yantao Ma
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China
| | - Xiaolei Wang
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China.
| | - Yongjun Zheng
- Department of Pain, Huadong Hospital, Shanghai Key Laboratory of Clinical Geriatric Medicine, Fudan University, No. 221, West YanAn Rd, Shanghai, 200040, P.R. China.
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Zhai W, Yang L, Sun P, Li Y, Han J, Wang G. Effect of dexmedetomidine on hemodynamic changes and inflammatory responses in patients undergoing off-pump coronary-artery bypass grafting. Exp Ther Med 2020; 20:250. [PMID: 33178348 PMCID: PMC7651881 DOI: 10.3892/etm.2020.9380] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 07/07/2020] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to determine the effect of dexmedetomidine on hemodynamic changes and inflammatory responses in patients undergoing off-pump coronary artery bypass grafting (OPCABG). A total of 300 patients about to receive OPCABG were randomized evenly into the control group (n=116) and study group (n=123). Intravenous dexmedetomidine pump infusion was administered to patients in the study group at a rate of 0.4 µg.kg-1.h-1. The control group received physiological saline at the same infusion speed. Changes in hemodynamic parameters and inflammatory indices were compared between the two groups. Hemodynamic parameters, such as the heart rate and mean arterial pressure, were lower in patients from the study group, compared with that in the control group (both P<0.05). The levels of pro-inflammatory factors, such as interleukin (IL)-6, tumor necrosis factor-α and C-reactive protein, were also reduced in the study group (P<0.05). The observed levels of IL-10 were lower in the control group compared with that in the study group, although a statistically significant difference was not achieved. Thus, the administration of dexmedetomidine in patients undergoing OPCABG stabilized hemodynamics and reduced inflammation. The present study was registered at the Chinese Clinical Trial Registry, under the trial registration number ChiCTR-OOC-15005978 (2015).
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Affiliation(s)
- Wenqian Zhai
- Tianjin Medical University, Tianjin 300070, P.R. China.,Department of Anesthesiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Lieming Yang
- Department of Cardiovascular Surgery, General Hospital of Tianjin Medical University, Tianjin 300052, P.R. China
| | - Peng Sun
- Department of Anesthesiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Yunfei Li
- Tianjin Medical University, Tianjin 300070, P.R. China
| | - Jiange Han
- Department of Anesthesiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Guolin Wang
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin 300052, P.R. China
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Li SP, Zhou XL, Zhao Y. Sedation with midazolam worsens the diaphragm function than dexmedetomidine and propofol during mechanical ventilation in rats. Biomed Pharmacother 2019; 121:109405. [PMID: 31810122 DOI: 10.1016/j.biopha.2019.109405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/25/2019] [Accepted: 08/28/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Mechanical ventilation (MV) is identified as an independent contributor to diaphragmatic atrophy and contractile dysfunction. Appropriate sedation is also essential during MV, and anesthetics may have direct adverse effects on the diaphragm. However, there is a lack of research into the effects of different anesthetics on diaphragm function during MV. OBJECTIVES In the present study, we aim to examine the effect of midazolam, dexmedetomidine, and propofol on diaphragm function during MV. DESIGN Animal study. SETTING University research laboratory. SUBJECTS Male Wistar rats. INTERVENTIONS Animals were experienced 12 h of MV or spontaneous breathing (SB) with continuous anesthetics infusion. Diaphragm contractile properties, cross-sectional areas, microcirculation, oxidative stress, and proteolysis were examined. MEASUREMENTS AND MAIN RESULTS Diaphragmatic specific force was markedly reduced in the midazolam group compared with the dexmedetomidine (-60.4 ± 3.01%, p < 0.001) and propofol group (-58.3 ± 2.60%, p < 0.001) after MV. MV sedated with midazolam induced more atrophy of type II fibers compared with dexmedetomidine (-21.8 ± 2.11%, p = 0.0001) and propofol (-8.2 ± 1.53%, p = 0.003). No significant differences of these indices were found in the midazolam, dexmedetomidine, and propofol groups under SB condition (all p > 0.05, respectively). Twelve hours of MV resulted in a time dependent reduction in diaphragmatic functional capillary density (PB -25.1%, p = 0.0001; MZ -21.6%, p = 0.0003; DD -15.2%, p = 0.022; PP -24.8%, p = 0.0001, respectively), which did not occur in the gastrocnemius muscle. The diaphragmatic lipid peroxidation adducts 4-HNE and HIF-1α levels were significantly lower in dexmedetomidine group and propofol group compared to midazolam group (p < 0.05, respectively). Meanwhile, the catalase and SOD levels were also relatively lower (p < 0.05, respectively) in midazolam group compared to dexmedetomidine group and propofol group. CONCLUSIONS Twelve hours of mechanical ventilation during midazolam sedation led to a more severe diaphragm dysfunction than dexmedetomidine and propofol, possibly caused by its relative weaker antioxidant capacity.
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Affiliation(s)
- Shao-Ping Li
- 169 Donghu Road, Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
| | - Xian-Long Zhou
- 169 Donghu Road, Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China
| | - Yan Zhao
- 169 Donghu Road, Emergency Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, 430071, China.
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Dexmedetomidine Impairs Diaphragm Function and Increases Oxidative Stress but Does Not Aggravate Diaphragmatic Atrophy in Mechanically Ventilated Rats. Anesthesiology 2019; 128:784-795. [PMID: 29346133 DOI: 10.1097/aln.0000000000002081] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Anesthetics in ventilated patients are critical as any cofactor hampering diaphragmatic function may have a negative impact on the weaning progress and therefore on patients' mortality. Dexmedetomidine may display antioxidant and antiproteolytic properties, but it also reduced glucose uptake by the muscle, which may impair diaphragm force production. This study tested the hypothesis that dexmedetomidine could inhibit ventilator-induced diaphragmatic dysfunction. METHODS Twenty-four rats were separated into three groups (n = 8/group). Two groups were mechanically ventilated during either dexmedetomidine or pentobarbital exposure for 24 h, referred to as interventional groups. A third group of directly euthanized rats served as control. Force generation, fiber dimensions, proteolysis markers, protein oxidation and lipid peroxidation, calcium homeostasis markers, and glucose transporter-4 (Glut-4) translocation were measured in the diaphragm. RESULTS Diaphragm force, corrected for cross-sectional area, was significantly decreased in both interventional groups compared to controls and was significantly lower with dexmedetomidine compared to pentobarbital (e.g., 100 Hz: -18%, P < 0.0001). In contrast to pentobarbital, dexmedetomidine did not lead to diaphragmatic atrophy, but it induced more protein oxidation (200% vs. 73% in pentobarbital, P = 0.0015), induced less upregulation of muscle atrophy F-box (149% vs. 374% in pentobarbital, P < 0.001) and impaired Glut-4 translocation (-73%, P < 0.0005). It activated autophagy, the calcium-dependent proteases, and caused lipid peroxidation similarly to pentobarbital. CONCLUSIONS Twenty-four hours of mechanical ventilation during dexmedetomidine sedation led to a worsening of ventilation-induced diaphragm dysfunction, possibly through impaired Glut-4 translocation. Although dexmedetomidine prevented diaphragmatic fiber atrophy, it did not inhibit oxidative stress and activation of the proteolytic pathways.
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Rolfe M, Kamel A, Ahmed MM, Kramer J. Pharmacological management of cardiac cachexia: a review of potential therapy options. Heart Fail Rev 2019; 24:617-623. [DOI: 10.1007/s10741-019-09784-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Li Y, Pan Y, Gao L, Lu G, Zhang J, Xie X, Tong Z, Li B, Li G, Li W. Dexmedetomidine attenuates pancreatic injury and inflammatory response in mice with pancreatitis by possible reduction of NLRP3 activation and up-regulation of NET expression. Biochem Biophys Res Commun 2017; 495:2439-2447. [PMID: 29269298 DOI: 10.1016/j.bbrc.2017.12.090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 12/16/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Previous studies have shown that acute inflammation is associated with increased sympathetic activity, which in turn increases the inflammatory response and leads to organ damage. The present study aimed to investigate whether dexmedetomidine administration during acute pancreatitis (AP) lessens pancreatic pathological and functional injury and the inflammatory response, and to explore the underlying mechanisms. METHODS Mild pancreatitis was induced in mice with caerulein, and severe pancreatitis was induced with caerulein plus lipopolysaccharide (LPS). After pancreatitis induction, dexmedetomidine at 10 or 20 μg/kg was injected via the tail vein. Pancreatic pathological and functional injury was assessed by histology and serum levels of amylase and lipase, respectively. The inflammatory response was evaluated by determining serum levels of inflammatory factors. The expression of myeloperoxidase (MPO) was examined by immunohistochemistry. The expression of norepinephrine transporter (NET), NLRP3, pro-IL-1β, and interleukin (IL)-1β in pancreatic tissue was detected by Western blot and real-time PCR. RESULTS Dexmedetomidine at 20 μg/kg significantly attenuated pancreatic pathological injury, reduced serum levels of amylase, lipase, IL-1β, IL-6, and tumor necrosis factor (TNF)-α, and decreased the expression of MPO in pancreatic tissue in both mouse models of pancreatitis. In addition, dexmedetomidine at 20 μg/kg significantly down-regulated the expression of NLRP3, pro-IL-1β, and IL-1β in pancreatic tissue, but up-regulated the expression of NET in both mouse models. CONCLUSION Dexmedetomidine attenuates pancreatic injury and inflammatory response in mice with pancreatitis possibly by reducing NLRP3 activation and up-regulating NET expression.
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Affiliation(s)
- Yong Li
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Yiyuan Pan
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Lin Gao
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Guotao Lu
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China; Department of Gastroenterology, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China.
| | - Jingzhu Zhang
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Xiaochun Xie
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Zhihui Tong
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Baiqiang Li
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Gang Li
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China
| | - Weiqin Li
- Surgical Intensive Care Unit, Department of General Surgery, Jinling Clinical Medical College of Nanjing Medical University, No. 305 Zhongshan East Road, Nanjing 210002, Jiangsu Province, China.
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Cao C, Gao T, Cheng M, Xi F, Zhao C, Yu W. Mild hypothermia ameliorates muscle wasting in septic rats associated with hypothalamic AMPK-induced autophagy and neuropeptides. Biochem Biophys Res Commun 2017; 490:882-888. [PMID: 28647359 DOI: 10.1016/j.bbrc.2017.06.135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 11/21/2022]
Abstract
Sepsis, always developing muscle wasting, contributes to serious complications and mortality. Mild hypothermia has been reported to have protective effects on the prognosis of septic patients. However, the underlying mechanisms remain unclear. We therefore hypothesized that mild hypothermia could ameliorate muscle wasting during sepsis and whether it was associated with hypothalamus AMPK-induced autophagy and neuropeptides. Adult male Sprague-Dawley rats were intraperitoneally injected with lipopolysaccharide (LPS) (5 mg/kg) or saline. Mild hypothermia was instantly induced at 33 °C for 3h after LPS injected. Meanwhile, the control and sepsis groups were simultaneously placed on the thermal mattress to maintain the a normal temperature in control group whatever the changes induced by anesthesia. Twenty-four hours after injection, skeletal muscle and hypothalamus tissues were obtained. Muscle wasting was measured by the mRNA expression of two muscle atrophic genes, muscle ring finger 1 (MuRF-1) and muscle atrophy F-box (MAFbx), as well as 3-methylhistidine (3-MH) and tyrosine release. Hypothalamic AMPK-induced autophagy markers and neuropeptides expression were also detected. Results showed that LPS administration significantly decreased hypothalamic AMPK-induced autophagy together with muscle wasting. Also, increased hypothalamic neuropeptides, proopiomelanocortin (POMC), cocaine and amphetamine-related transcript (CART) and neuro-peptides Y (NPY) and decreased agouti-related protein (AgRP) were observed. Mild hypothermia significantly increased hypothalamic AMPK-induced autophagy and ameliorated LPS-induced muscle wasting, and attenuated the alteration of neuropeptides, POMC, CART and NPY. In conclusion, mild hypothermia could alleviate muscle wasting by LPS injection, which was associated with reversing the level of hypothalamic AMPK-induced autophagy and the alteration of neuropeptides. These results suggested that mild hypothermia could be a potential treatment concept and a novel mechanism in management of muscle wasting in critically ill patients.
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Affiliation(s)
- Chun Cao
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China
| | - Tao Gao
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China
| | - Minhua Cheng
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China
| | - Fengchan Xi
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China
| | - Chenyan Zhao
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China
| | - Wenkui Yu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, PR China.
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