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Sohn JT. Lipid Emulsion-Mediated Alterations in Blood Pressure Caused By Acute Tramadol Toxicity. J Emerg Med 2024; 66:e738-e739. [PMID: 38839133 DOI: 10.1016/j.jemermed.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/04/2024] [Indexed: 06/07/2024]
Affiliation(s)
- Ju-Tae Sohn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, Jinju-si, Gyeongsangnam-do, Republic of Korea; Institute of Medical Science, Gyeonsang National University, Jinju-si, Gyeongsangnam-do, Republic of Korea.
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Behnoush AH, Alizadeh N, Emami M, Bazmi E, Alimohamadi Y, Behnoush B. Effects of Intravenous Lipid Emulsion Administration in Acute Tramadol Poisoning: A Randomized Controlled Trial. J Emerg Med 2024; 66:154-162. [PMID: 38309983 DOI: 10.1016/j.jemermed.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/30/2023] [Accepted: 11/05/2023] [Indexed: 02/05/2024]
Abstract
BACKGROUND As the prevalence of tramadol toxicity is increasing, managing these patients with the aim of treatment and complete recovery has become a major challenge for health care professionals. OBJECTIVE This study evaluated the short-term effects of IV lipid emulsion (ILE) administration in cases of tramadol poisoning. METHODS In this double-blind, randomized controlled trial, 120 patients with pure tramadol poisoning and a Glasgow Coma (GCS) score ≤ 12 referred to a poisoning center in Tehran, Iran were selected and randomly assigned 1:1 to receive ILE 20% (intervention) or 0.9% saline (control) after admission and primary stabilization. The patient's vital signs, GCS score, hospitalization duration, and rate of seizure occurrence were recorded and compared between the two groups. RESULTS Mean (SD) age of participants was 25.3 (5.4) years and 84 (70%) were male. Mean (SD) ingested dose of tramadol was 3118 (244) mg, which was not different between the groups. Compared with controls, the ILE group had a higher level of consciousness after treatment (median [interquartile range] GCS score 12 [10-13] vs. 10 [8-12]; p = 0.03). In addition, length of hospitalization (median [interquartile range] (2 [1-3] days vs. 4 [4-6] days; p < 0.01) and rate of seizure occurrence were lower in the intervention group (16/60 vs. 30/60; p < 0.01). CONCLUSIONS In the setting of tramadol poisoning with a decreased level of consciousness and based on our study's findings, administration of ILE is suggested to help manage patients in hospital emergency departments. However, larger trials might be needed to confirm these findings before entering the guidelines.
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Affiliation(s)
| | - Nafiseh Alizadeh
- Department of Pharmaceutical Care, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Emami
- Department of Clinical Pharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Bazmi
- Legal Medicine Research Center, Legal Medicine Organization, Tehran, Iran
| | - Yousef Alimohamadi
- Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Behnam Behnoush
- Department of Forensic Medicine and Toxicology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Park KE, Lee SH, Bae SI, Hwang Y, Ok SH, Ahn SH, Sim G, Chung S, Sohn JT. Lipid Emulsion Inhibits Amlodipine-Induced Nitric Oxide-Mediated Vasodilation in Isolated Rat Aorta. Int J Mol Sci 2023; 24:8741. [PMID: 37240087 PMCID: PMC10218685 DOI: 10.3390/ijms24108741] [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: 04/17/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
This study aimed to examine the effect of lipid emulsion on the vasodilation induced by a toxic dose of amlodipine in isolated rat aorta and elucidate its mechanism, with a particular focus on nitric oxide. The effects of endothelial denudation, NW-nitro-L-arginvine methyl ester (L-NAME), methylene blue, lipid emulsion, and linolenic acid on the amlodipine-induced vasodilation and amlodipine-induced cyclic guanosine monophosphate (cGMP) production were examined. Furthermore, the effects of lipid emulsion, amlodipine, and PP2, either alone or combined, on endothelial nitric oxide synthase (eNOS), caveolin-1, and Src-kinase phosphorylation were examined. Amlodipine-induced vasodilation was higher in endothelium-intact aorta than in endothelium-denuded aorta. L-NAME, methylene blue, lipid emulsion, and linolenic acid inhibited amlodipine-induced vasodilation and amlodipine-induced cGMP production in the endothelium-intact aorta. Lipid emulsion reversed the increased stimulatory eNOS (Ser1177) phosphorylation and decreased inhibitory eNOS (Thr495) phosphorylation induced via amlodipine. PP2 inhibited stimulatory eNOS, caveolin-1, and Src-kinase phosphorylation induced via amlodipine. Lipid emulsion inhibited amlodipine-induced endothelial intracellular calcium increase. These results suggest that lipid emulsion attenuated the vasodilation induced via amlodipine through inhibiting nitric oxide release in isolated rat aorta, which seems to be mediated via reversal of stimulatory eNOS (Ser1177) phosphorylation and inhibitory eNOS (Thr495) dephosphorylation, which are also induced via amlodipine.
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Affiliation(s)
- Kyeong-Eon Park
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
| | - Soo Hee Lee
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Changwon Hospital, Changwon-si 51472, Gyeongsangnam-do, Republic of Korea (S.-H.O.)
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
| | - Sung Il Bae
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
| | - Yeran Hwang
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
| | - Seong-Ho Ok
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Changwon Hospital, Changwon-si 51472, Gyeongsangnam-do, Republic of Korea (S.-H.O.)
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
- Institute of Health Sciences, Gyeongsang National University, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
| | - Seung Hyun Ahn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
- Institute of Health Sciences, Gyeongsang National University, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
| | - Gyujin Sim
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
- Institute of Health Sciences, Gyeongsang National University, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
| | - Soonghee Chung
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea (S.I.B.); (S.H.A.)
| | - Ju-Tae Sohn
- Institute of Health Sciences, Gyeongsang National University, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si 52727, Gyeongsangnam-do, Republic of Korea
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Hegde V, Dalia T, Tayeb T, Vidic A. Reply to the letter to the editor. Eur Heart J Case Rep 2023; 7:ytad241. [PMID: 37252203 PMCID: PMC10212576 DOI: 10.1093/ehjcr/ytad241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Vishwajit Hegde
- Resident, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Tarun Dalia
- Fellow, Department of Cardiovascular Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Taher Tayeb
- Fellow, Department of Cardiovascular Medicine, University of Kansas Medical Center, Kansas City, KS, USA
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Sohn JT. Lipid Emulsion-Mediated Improvement of Hemodynamic Depression Caused by Amlodipine Toxicity. Pediatr Emerg Care 2023; 39:205-206. [PMID: 36083186 DOI: 10.1097/pec.0000000000002842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ju-Tae Sohn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, Jinju-si, Republic of Korea; and Institute of Health Sciences, Gyeongsang National University, Jinju-si, Republic of Korea
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Wang L, Wiedmann TS, Kandimalla KK. Modulating insulin signaling and trafficking at the blood-brain barrier endothelium using lipid based nanoemulsions. Int J Pharm 2022; 622:121823. [PMID: 35605891 PMCID: PMC9881744 DOI: 10.1016/j.ijpharm.2022.121823] [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: 11/14/2021] [Revised: 05/01/2022] [Accepted: 05/08/2022] [Indexed: 01/31/2023]
Abstract
The compositionally distinct lipid rafts present in the plasma membrane regulate the restrictive trafficking and signal transduction in the blood-brain barrier (BBB) endothelium. Several metabolic and neurodegenerative diseases are associated with lipid homeostasis disruption within the BBB endothelium. Here, we hypothesized that the delivery of lipid triglyceride based nanoemulsions containing unsaturated fatty acids (UFAs) provides a novel non-pharmacological approach to modulate lipid raft integrity and rectify the aberrant trafficking and signal transduction. The current study has shown that soybean oil nanoemulsions (SNEs) altered the morphology of lipid rafts that are stained by Alex Fluor 647 labelled cholera toxin (AF647-CTX) in polarized human cerebral microvascular endothelial (hCMEC/D3) cell monolayers. Moreover, western blot and flow cytometry analysis showed that SNEs containing polyunsaturated fatty acids (PUFAs) increased phospo-AKT (p-AKT) expression, a marker for the stimulation of metabolic arm of insulin signaling, and insulin uptake in hCMEC/D3 monolayers. However, olive oil nanoemulsions (ONEs) containing monounsaturated fatty acids (MUFAs) had no detectable impact on lipid raft integrity, AKT phosphorylation, or insulin uptake. These findings provided direct evidence that SNEs containing PUFAs can upregulate insulin-pAKT pathway, facilitate insulin trafficking at the BBB, and potentially address cerebrovascular dysfunction in metabolic and neurodegenerative diseases.
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Affiliation(s)
- Lushan Wang
- Department of Pharmaceutics, University of Minnesota, College of Pharmacy, Minneapolis, MN 55455, United States,Brain Barriers Research Center, University of Minnesota, College of Pharmacy, Minneapolis, MN 55455, United States
| | - Timothy S. Wiedmann
- Department of Pharmaceutics, University of Minnesota, College of Pharmacy, Minneapolis, MN 55455, United States
| | - Karunya K. Kandimalla
- Department of Pharmaceutics, University of Minnesota, College of Pharmacy, Minneapolis, MN 55455, United States,Brain Barriers Research Center, University of Minnesota, College of Pharmacy, Minneapolis, MN 55455, United States,Corresponding author. (K.K. Kandimalla)
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Sakata K, Kito K, Tanabe K, Fukuoka N, Nagase K, Iida H. Propofol But Not Desflurane Maintains Rat Cerebral Arteriolar Responses to Acetylcholine During Acute Hyperglycemia. J Neurosurg Anesthesiol 2021; 33:177-182. [PMID: 31306261 DOI: 10.1097/ana.0000000000000632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 06/19/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Acute hyperglycemia causes vascular endothelial dysfunction in various organs including the cerebral vessels. It is associated with increased mortality and morbidity in the perioperative period. The impact of anesthetic agents on cerebral vasodilatory responses during hyperglycemia remains unclear. We investigated endothelial function in rat cerebral arterioles during acute hyperglycemia, under propofol or desflurane anesthesia. MATERIALS AND METHODS A closed cranial window preparation was used to measure changes in pial arteriole diameter induced by topical application of acetylcholine (ACh), an endothelium-dependent vasodilator, in rats anesthetized with propofol or desflurane. Pial arteriole responses to ACh were measured during normoglycemia and hyperglycemia. We then investigated whether the response of cerebral arterioles to acute hyperglycemia under propofol anesthesia were related to propofol or its vehicle, intralipid. RESULTS ACh resulted in a dose-dependent dilation of cerebral arterioles during propofol and desflurane anesthesia under normoglycemic conditions. The vasodilatory effects of ACh were also maintained under hyperglycemic conditions during propofol anesthesia, but the vasodilator response to ACh was significantly impaired during hyperglycemia compared with normoglycemia with desflurane anesthesia. The vasodilatory effects of ACh were maintained during normoglycemia and hyperglycemia in rats receiving propofol or intralipid. CONCLUSIONS Rat pial arteriole responses to ACh are maintained during conditions of acute hyperglycemia with propofol anesthesia but suppressed compared with normoglycemia with desflurane anesthesia.
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Affiliation(s)
- Koji Sakata
- Department of Anesthesiology and Pain Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
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Lipid Emulsion Enhances Vasoconstriction Induced by Dexmedetomidine in the Isolated Endothelium-Intact Aorta. Int J Mol Sci 2021; 22:ijms22073309. [PMID: 33804982 PMCID: PMC8038020 DOI: 10.3390/ijms22073309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/16/2021] [Accepted: 03/20/2021] [Indexed: 11/16/2022] Open
Abstract
This study aimed to examine the effect of lipid emulsion (LE) on the vasoconstriction induced by dexmedetomidine (DMT) in the isolated rat aorta and elucidate the associated cellular mechanism. The effect of LE, NW-nitro-L-arginine methyl ester (L-NAME), and methyl-β-cyclodextrin (MβCD) on the DMT-induced contraction was examined. We investigated the effect of LE on the DMT-induced cyclic guanosine monophosphate (cGMP) formation and DMT concentration. The effect of DMT, LE, 4-Amino-3-(4-chlorophenyl)-1-(t-butyl)-1H-pyrazolo[3,4-d]pyrimidine,4-Amino-5-(4-chlorophenyl)-7-(t-butyl)pyrazolo[3,4-d]pyrimidine (PP2), and rauwolscine on the phosphorylation of endothelial nitric oxide synthase (eNOS), caveolin-1, and Src kinase was examined in the human umbilical vein endothelial cells. L-NAME, MβCD, and LE (1%, standardized mean difference (SMD): 2.517) increased the DMT-induced contraction in the endothelium-intact rat aorta. LE (1%) decreased the DMT (10−6 M) concentration (SMD: −6.795) and DMT-induced cGMP formation (SMD: −2.132). LE (1%) reversed the DMT-induced eNOS (Ser1177 and Thr496) phosphorylation. PP2 inhibited caveolin-1 and eNOS phosphorylation induced by DMT. DMT increased the Src kinase phosphorylation. Thus, LE (1%) enhanced the DMT-induced contraction by inhibition of NO synthesis, which may be caused by the decreased DMT concentration. DMT-induced NO synthesis may be caused by the increased eNOS (Ser1177) phosphorylation and decreased eNOS (Thr495) phosphorylation potentially mediated by Src kinase-induced caveolin-1 phosphorylation.
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Lee SH, Sohn JT. Potential mechanisms underlying the effects of lipid emulsion against theophylline-induced toxicity. Am J Emerg Med 2020; 45:629-630. [PMID: 33261948 DOI: 10.1016/j.ajem.2020.11.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 11/18/2020] [Indexed: 11/15/2022] Open
Affiliation(s)
- Soo Hee Lee
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 beon-gil, Jinju-si, Gyeongsangnam-do 52727, Republic of Korea
| | - Ju-Tae Sohn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 beon-gil, Jinju-si, Gyeongsangnam-do 52727, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju-si, 52727, Republic of Korea.
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Lee SH, Kwon SC, Ok SH, Ahn SH, Bae SI, Hwang Y, Park KE, Sohn JT. Linolenic acid enhances contraction induced by phenylephrine in isolated rat aorta. Eur J Pharmacol 2020; 890:173662. [PMID: 33131719 DOI: 10.1016/j.ejphar.2020.173662] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/12/2020] [Accepted: 10/20/2020] [Indexed: 11/19/2022]
Abstract
This study examined the effect of linolenic acid on the contraction of isolated endothelium-intact and -denuded rat aorta induced by phenylephrine and its underlying mechanism. This was conducted in the presence or absence of NW-nitro-L-arginine methyl ester (L-NAME), 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), methylene blue, and calmidazolium. The effects of linolenic acid on contraction induced by calcium chloride in calcium-free Krebs solution containing 60 mM potassium chloride were also examined. Moreover, the effect of linolenic acid on the association between intracellular calcium level ([Ca2+]i) and tension induced by phenylephrine was examined. Finally, we examined the effects of linolenic acid on cGMP formation and endothelial nitric oxide synthase (eNOS) phosphorylation induced by phenylephrine. Linolenic acid (5 × 10-5 M) increased phenylephrine-induced contraction in endothelium-intact aorta (standardized mean difference [SMD] of log ED50: 2.23), whereas it decreased this contraction in endothelium-denuded aorta (SMD: 1.96). L-NAME, ODQ, methylene blue, and calmidazolium increased phenylephrine-induced contraction in endothelium-intact aorta. Linolenic acid decreased contraction induced by calcium chloride in calcium-free Krebs solution containing 60 mM potassium chloride in endothelium-denuded aorta. Linolenic acid caused an increase in [Ca2+]i (SMD at 3 × 10-7 M phenylephrine: 1.63) and calcium sensitivity induced by phenylephrine in endothelium-intact aorta. Conversely, linolenic acid decreased [Ca2+]i (SMD: 0.99) induced by phenylephrine in endothelium-denuded aorta. Linolenic acid decreased cGMP formation and eNOS phosphorylation induced by phenylephrine. These results suggest that linolenic acid increases phenylephrine-induced contraction, which is attributed to linolenic acid inhibition of endothelial NO release rather than its decrease of [Ca2+]i in vascular smooth muscle.
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Affiliation(s)
- Soo Hee Lee
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea
| | - Seong-Chun Kwon
- Department of Physiology, Institute of Clinical and Translational Research, Catholic Kwandong University, College of Medicine, Gangneung, 25601, Republic of Korea
| | - Seong-Ho Ok
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Changwon Hospital 11, Samjeongja-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, 51472, Republic of Korea; Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju-si, 52727, Republic of Korea
| | - Seung Hyun Ahn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea
| | - Sung Il Bae
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea
| | - Yeran Hwang
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea
| | - Kyeong-Eon Park
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea
| | - Ju-Tae Sohn
- Department of Anesthesiology and Pain Medicine, Gyeongsang National University College of Medicine, Gyeongsang National University Hospital, 15 Jinju-daero 816 Beon-gil, Jinju-si, Gyeongsangnam-do, 52727, Republic of Korea; Institute of Health Sciences, Gyeongsang National University, Jinju-si, 52727, Republic of Korea.
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Lipofundin MCT/LCT Inhibits Levcromakalim-Induced Vasodilation by Inhibiting Endothelial Nitric Oxide Release. Int J Mol Sci 2020; 21:ijms21051763. [PMID: 32143531 PMCID: PMC7084418 DOI: 10.3390/ijms21051763] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 11/17/2022] Open
Abstract
The goal of this study was to examine the effect of lipid emulsion on the vasodilation induced by ATP-sensitive potassium (KATP) channels in isolated rat aortae and the underlying mechanism. The effects of Intralipid, containing 100% long-chain fatty acids, and Lipofundin MCT/LCT, containing 50% long-chain fatty acids plus 50% medium-chain fatty acids, on the vasodilation induced by levcromakalim in endothelium-intact aorta with or without NW-nitro-L-arginine methyl ester (L-NAME) and in endothelium-denuded aorta were examined. The effects of L-arginine, L-NAME, glibenclamide, and Lipofundin MCT/LCT, alone or combined, on the levcromakalim-induced vasodilation were examined. Lipofundin MCT/LCT inhibited the levcromakalim-induced vasodilation of isolated endothelium-intact aortae, whereas Intralipid did not. In addition, Lipofundin MCT/LCT had no effect on the levcromakalim-induced vasodilation of endothelium-denuded rat aortae and endothelium-intact aortae with L-NAME. L-arginine and Lipofundin MCT/LCT produced more levcromakalim-induced vasodilation than Lipofundin MCT/LCT alone. Glibenclamide inhibited levcromakalim-induced vasodilation. Levcromakalim did not significantly alter endothelial nitric oxide synthase phosphorylation, whereas Lipofundin MCT/LCT decreased cyclic guanosine monophosphate. Lipofundin MCT/LCT did not significantly alter levcromakalim-induced membrane hyperpolarization. Taken together, these results suggest that Lipofundin MCT/LCT inhibits the vasodilation induced by levcromakalim by inhibiting basally released endothelial nitric oxide, which seems to occur through medium-chain fatty acids.
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Bupropion Overdose Complicated by Cardiogenic Shock Requiring Vasopressor Support and Lipid Emulsion Therapy. J Emerg Med 2020; 58:e47-e50. [PMID: 31911020 DOI: 10.1016/j.jemermed.2019.11.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 11/08/2019] [Accepted: 11/23/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND Bupropion overdose is a commonly encountered presentation in the emergency department (ED). While the majority of cases resolve with supportive care, serious adverse effects, including seizures, cardiogenic shock, and death, can occur. Intravenous lipid emulsion (ILE) therapy has been utilized for a multitude of poisonings with varying levels of success. Although a number of cases suggest the value of ILE therapy in cases of bupropion overdose, more recent data propose that its role may be overstated. CASE REPORT A young woman presented to the ED with altered mental status complicated by seizure after bupropion overdose. She subsequently developed cardiogenic shock requiring vasopressor support. Bedside echocardiogram revealed a decreased left ventricular ejection fraction (LVEF). She received ILE therapy with significant improvement in both hemodynamic status and LVEF by bedside ultrasound. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Although the majority of patients presenting with bupropion overdose improve with supportive care, life-threatening sequelae are possible. ILE therapy has shown promise in a variety of different overdose situations, although the evidence in cases of bupropion poisoning has been varied, and it has traditionally been utilized as a last-line rescue modality. Based on hemodynamic parameters and bedside ultrasound, this case suggests that early initiation of ILE therapy should be considered in these cases, as the potential benefits likely outweigh the theoretical risks.
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Local anesthetic systemic toxicity: proposed mechanisms for lipid resuscitation and methods of prevention. J Anesth 2019; 33:569-571. [DOI: 10.1007/s00540-019-02648-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 04/24/2019] [Indexed: 10/26/2022]
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Liu H, Zhou X, Wang Y, Yang M, Xu X, Wu A. Mixed micelle as nanocarrier for etomidate: Development, in vitro characterizations, and in vivo study on toxicity and anesthetic effects. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2018.10.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
The experimental use of lipid emulsion for local anesthetic toxicity was originally identified in 1998. It was then translated to clinical practice in 2006 and expanded to drugs other than local anesthetics in 2008. Our understanding of lipid resuscitation therapy has progressed considerably since the previous update from the American Society of Regional Anesthesia and Pain Medicine, and the scientific evidence has coalesced around specific discrete mechanisms. Intravenous lipid emulsion therapy provides a multimodal resuscitation benefit that includes both scavenging (eg, the lipid shuttle) and nonscavenging components. The intravascular lipid compartment scavenges drug from organs susceptible to toxicity and accelerates redistribution to organs where drug (eg, bupivacaine) is stored, detoxified, and later excreted. In addition, lipid exerts nonscavenging effects that include postconditioning (via activation of prosurvival kinases) along with cardiotonic and vasoconstrictive benefits. These effects protect tissue from ischemic damage and increase tissue perfusion during recovery from toxicity. Other mechanisms have diminished in favor based on lack of evidence; these include direct effects on channel currents (eg, calcium) and mass-effect overpowering a block in mitochondrial metabolism. In this narrative review, we discuss these proposed mechanisms and address questions left to answer in the field. Further work is needed, but the field has made considerable strides towards understanding the mechanisms.
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Atashkhoei S, Abri R, Naghipour B, Hatami Marandi P, Fazeli Danesh MT. Effect of Glucose Containing Crystalloid Infusion on Maternal Hemodynamic Status After Spinal Anesthesia for Cesarean Section. Anesth Pain Med 2018; 8:e80184. [PMID: 30271752 PMCID: PMC6150926 DOI: 10.5812/aapm.80184] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/14/2018] [Accepted: 08/17/2018] [Indexed: 12/22/2022] Open
Abstract
Background Despite preventive strategies, hypotension is the most common complication of spinal anesthesia in cesarean section. Objectives The aim of this study was to assess the effect of glucose-containing crystalloid infusion on maternal hemodynamic status after spinal anesthesia for cesarean section. Methods In this prospective, randomized, double-blind clinical trial, 80 parturients undergoing elective cesarean section with spinal anesthesia were studied. In group A (n = 40) ringer with 1% glucose solution (10 gr glucose in 1000 mL ringer) and in group B (n = 40) only ringer solution infused before and after spinal anesthesia. Demographic data, hemodynamic change, complications and their treatments, maternal blood sugar level and neonatal APGAR (appearance, pulse, grimace, activity and respiration) score, intraoperative fluid, duration of surgery, and anesthesia were recorded in the two groups. Results The incidence of hypotension in group A was significantly lower than group B (27.5% vs 75%) (P = 0.002). Other complications (sustained hypotension, nausea, pallor, and shivering were significantly lower in parturients of the group A (P < 0.05). Maternal blood sugar (BS), before and after surgery, was not significantly different in the two groups (P = 0.207 and P = 0.239, respectively). There was no statistically significant difference in the APGAR score of neonates at the 1st and 5th minutes of the birth between the two groups (P = 0.076). Conclusions It seems that adding 1% glucose to crystalloid solution improves the hemodynamic status and decreases post-spinal anesthesia complications without significant changes in the maternal blood sugar level and APGAR score of neonates.
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Affiliation(s)
- Simin Atashkhoei
- Department of Anesthesiology and Critical Care, Alzahra Hospital, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reyhaneh Abri
- Department of Anesthesiology and Critical Care, Alzahra Hospital, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Corresponding Author: Assistant professor, Department of Anesthesiology and Critical Care, Alzahra Hospital, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran. Tel/Fax:: +98-4135539163,
| | - Bahman Naghipour
- Department of Anesthesiology and Critical Care, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mohammad Taher Fazeli Danesh
- Department of Anesthesiology and Critical Care, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Lipid Emulsions Containing Medium Chain Triacylglycerols Blunt Bradykinin-Induced Endothelium-Dependent Relaxation in Porcine Coronary Artery Rings. Lipids 2017; 52:235-243. [PMID: 28044232 DOI: 10.1007/s11745-016-4225-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 12/14/2016] [Indexed: 01/23/2023]
Abstract
Lipid emulsions for parenteral nutrition are used to provide calories and essential fatty acids for patients. They have been associated with hypertriglyceridemia, hypercholesterolemia, and metabolic stress, which may promote the development of endothelial dysfunction in patients. The aim of the present study was to determine whether five different industrial lipid emulsions may affect the endothelial function of coronary arteries. Porcine coronary artery rings were incubated with lipid emulsions 0.5, 1, or 2% (v/v) for 30 min before the determination of vascular reactivity in organ chambers and the level of oxidative stress using electron paramagnetic resonance. Incubation of coronary artery rings with either Lipidem®, Medialipid® containing long- and medium-chain triacylglycerols (LCT/MCT), or SMOFlipid® containing LCT, MCT, omega-9, and -3, significantly reduced the bradykinin-induced endothelium-dependent relaxation, affecting both the nitric oxide (NO) and endothelium-dependent hyperpolarization (EDH) components, whereas, Intralipid® containing LCT (soybean oil) and ClinOleic® containing LCT (soybean and olive oil) did not have such an effect. The endothelial dysfunction induced by Lipidem® was significantly improved by indomethacin, a cyclooxygenase (COX) inhibitor, inhibitors of oxidative stress (N-acetylcysteine, superoxide dismutase, catalase) and transition metal chelating agents (neocuproine, tetrathiomolybdate, deferoxamine and L-histidine). Lipidem® significantly increased the arterial level of oxidative stress. The present findings indicate that lipid emulsions containing LCT/MCT induce endothelial dysfunction in coronary artery rings by blunting both NO- and EDH-mediated relaxations. The Lipidem®-induced endothelial dysfunction is associated with increased vascular oxidative stress and the formation of COX-derived vasoconstrictor prostanoids.
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Postprandial lipids accelerate and redirect nitric oxide consumption in plasma. Nitric Oxide 2016; 55-56:70-81. [PMID: 27021272 DOI: 10.1016/j.niox.2016.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 03/16/2016] [Accepted: 03/17/2016] [Indexed: 02/03/2023]
Abstract
Nitric oxide (NO) and O2 are both three-to four-fold more soluble in biological lipids than in aqueous solutions. Their higher concentration within plasma lipids accelerates NO autoxidation to an extent that may be of importance to overall NO bioactivity. This study was undertaken to test the hypothesis that increased plasma lipids after a high-fat meal appreciably accelerate NO metabolism and alter the byproducts formed. We found that plasma collected from subjects after consumption of a single high-fat meal had a higher capacity for NO consumption and consumed NO more rapidly compared to fasting plasma. This increased NO consumption showed a direct correlation with plasma triglyceride concentrations (p = 0.006). The accelerated NO consumption in postprandial plasma was reversed by removal of the lipids from the plasma, was mimicked by the addition of hydrophobic micelles to aqueous buffer, and could not be explained by the presence of either free hemoglobin or ceruloplasmin. The products of NO consumption were shifted in postprandial plasma, with 55% more nitrite (n = 12, p = 0.002) but 50% less SNO (n = 12, p = 0.03) production compared to matched fasted plasma. Modeling calculations indicated that NO autoxidation was accelerated by about 48-fold in the presence of plasma lipids. We conclude that postprandial triglyceride-rich lipoproteins exert a significant influence on NO metabolism in plasma.
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Tampakakis E, Tabit CE, Holbrook M, Linder EA, Berk BD, Frame AA, Bretón‐Romero R, Fetterman JL, Gokce N, Vita JA, Hamburg NM. Intravenous Lipid Infusion Induces Endoplasmic Reticulum Stress in Endothelial Cells and Blood Mononuclear Cells of Healthy Adults. J Am Heart Assoc 2016; 5:e002574. [PMID: 26755554 PMCID: PMC4859375 DOI: 10.1161/jaha.115.002574] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 10/27/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND Endoplasmic reticulum (ER) stress and the subsequent unfolded protein response may initially be protective, but when prolonged, have been implicated in atherogenesis in diabetic conditions. Triglycerides and free fatty acids (FFAs) are elevated in patients with diabetes and may contribute to ER stress. We sought to evaluate the effect of acute FFA elevation on ER stress in endothelial and circulating white cells. METHODS AND RESULTS Twenty-one healthy subjects were treated with intralipid (20%; 45 mL/h) plus heparin (12 U/kg/h) infusion for 5 hours. Along with increased triglyceride and FFA levels, intralipid/heparin infusion reduced the calf reactive hyperemic response without a change in conduit artery flow-mediated dilation consistent with microvascular dysfunction. To investigate the short-term effects of elevated triglycerides and FFA, we measured markers of ER stress in peripheral blood mononuclear cells (PBMCs) and vascular endothelial cells (VECs). In VECs, activating transcription factor 6 (ATF6) and phospho-inositol requiring kinase 1 (pIRE1) proteins were elevated after infusion (both P<0.05). In PBMCs, ATF6 and spliced X-box-binding protein 1 (XBP-1) gene expression increased by 2.0- and 2.5-fold, respectively (both P<0.05), whereas CHOP and GADD34 decreased by ≈67% and 74%, respectively (both P<0.01). ATF6 and pIRE1 protein levels also increased (both P<0.05), and confocal microscopy revealed the nuclear localization of ATF6 after infusion, suggesting activation. CONCLUSIONS Along with microvascular dysfunction, intralipid infusion induced an early protective ER stress response evidenced by activation of ATF6 and IRE1 in both leukocytes and endothelial cells. Our results suggest a potential link between metabolic disturbances and ER stress that may be relevant to vascular disease.
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Affiliation(s)
- Emmanouil Tampakakis
- Division of CardiologyDepartment of MedicineJohns Hopkins Medical InstitutionsBaltimoreMD
| | - Corey E. Tabit
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Monika Holbrook
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Erika A. Linder
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Brittany D. Berk
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Alissa A. Frame
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Rosa Bretón‐Romero
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Jessica L. Fetterman
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Noyan Gokce
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Joseph A. Vita
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
| | - Naomi M. Hamburg
- Evans Department of Medicine and Whitaker Cardiovascular InstituteBoston University School of MedicineBostonMA
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Lipid Emulsion Attenuates Acetylcholine-Induced Relaxation in Isolated Rat Aorta. BIOMED RESEARCH INTERNATIONAL 2015; 2015:871545. [PMID: 26273653 PMCID: PMC4530220 DOI: 10.1155/2015/871545] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/20/2015] [Accepted: 07/08/2015] [Indexed: 11/17/2022]
Abstract
We investigated the effect of Lipofundin MCT/LCT and Intralipid on acetylcholine-induced nitric oxide- (NO-) mediated relaxation in rat aorta to determine which lipid emulsion (LE) is more potent in terms of inhibition of NO-induced relaxation. Dose-response curves of responses induced by acetylcholine, the calcium ionophore A23187, and sodium nitroprusside were generated using isolated rat aorta with or without LE. The effect of Lipofundin MCT/LCT on acetylcholine-induced endothelial nitric oxide synthase (eNOS) phosphorylation in human umbilical vein endothelial cells (HUVECs) was investigated using western blotting. Lipofundin MCT/LCT (0.1 and 0.2%) attenuated acetylcholine-induced relaxation in endothelium-intact aorta with or without tiron, whereas 0.2% Intralipid only inhibited relaxation. Lipofundin MCT/LCT inhibited relaxation induced by the calcium ionophore A23187 and sodium nitroprusside in endothelium-intact aorta, but Lipofundin MCT/LCT had no effect on sodium nitroprusside-induced relaxation in the endothelium-denuded aorta. Combined pretreatment with l-arginine plus Lipofundin MCT/LCT increased acetylcholine-induced maximal relaxation in endothelium-intact aorta compared with Lipofundin MCT/LCT alone. l-Arginine attenuated Lipofundin MCT/LCT-mediated inhibition of acetylcholine-induced eNOS phosphorylation in HUVECs. Taken together, Lipofundin MCT/LCT attenuated acetylcholine-induced NO-mediated relaxation via an inhibitory effect on the endothelium including eNOS, which is proximal to activation of guanylyl cyclase.
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Fettiplace MR, Akpa BS, Rubinstein I, Weinberg G. Confusion About Infusion: Rational Volume Limits for Intravenous Lipid Emulsion During Treatment of Oral Overdoses. Ann Emerg Med 2015; 66:185-8. [PMID: 25737211 DOI: 10.1016/j.annemergmed.2015.01.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 01/25/2023]
Affiliation(s)
- Michael R Fettiplace
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, IL; Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL.
| | - Belinda S Akpa
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL
| | - Israel Rubinstein
- Section of Pulmonary, Critical Care, Sleep and Allergy Medicine, Department of Medicine, University of Illinois College of Medicine, Chicago, IL; Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL
| | - Guy Weinberg
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, IL; Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL
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Zheng L, Feng Y, Shi Y, Zhang J, Mu Q, Qin L, Berggren-Söderlund M, Nilsson-Ehle P, Zhang X, Luo G, Xu N. Intralipid decreases apolipoprotein M levels and insulin sensitivity in rats. PLoS One 2014; 9:e105681. [PMID: 25144649 PMCID: PMC4140822 DOI: 10.1371/journal.pone.0105681] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 07/22/2014] [Indexed: 11/26/2022] Open
Abstract
Background Apolipoprotein M (ApoM) is a constituent of high-density lipoproteins (HDL). It plays a crucial role in HDL-mediated reverse cholesterol transport. Insulin resistance is associated with decreased ApoM levels. Aims To assess the effects of increased free fatty acids (FFAs) levels after short-term Intralipid infusion on insulin sensitivity and hepatic ApoM gene expression. Methods Adult male Sprague-Dawley (SD) rats infused with 20% Intralipid solution for 6 h. Glucose infusion rates (GIR) were determined by hyperinsulinemic-euglycemic clamp during Intralipid infusion and plasma FFA levels were measured by colorimetry. Rats were sacrificed after Intralipid treatment and livers were sampled. Human embryonic kidney 293T cells were transfected with a lentivirus mediated human apoM overexpression system. Goto-Kakizaki (GK) rats were injected with the lentiviral vector and insulin tolerance was assessed. Gene expression was assessed by real-time RT-PCR and PCR array. Results Intralipid increased FFAs by 17.6 folds and GIR was decreased by 27.1% compared to the control group. ApoM gene expression was decreased by 40.4% after Intralipid infusion. PPARβ/δ expression was not changed by Intralipid. Whereas the mRNA levels of Acaca, Acox1, Akt1, V-raf murine sarcoma 3611 viral oncogene homolog, G6pc, Irs2, Ldlr, Map2k1, pyruvate kinase and RBC were significantly increased in rat liver after Intralipid infusion. The Mitogen-activated protein kinase 8 (MAPK8) was significantly down-regulated in 293T cells overexpressing ApoM. Overexpression of human ApoM in GK rats could enhance the glucose-lowering effect of exogenous insulin. Conclusion These results suggest that Intralipid could decrease hepatic ApoM levels. ApoM overexpression may have a potential role in improving insulin resistance in vivo and modulating apoM expression might be a future therapeutic strategy against insulin resistance in type 2 diabetes.
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Affiliation(s)
- Lu Zheng
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Yuehua Feng
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Yuanping Shi
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Jun Zhang
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Qinfeng Mu
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Li Qin
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Maria Berggren-Söderlund
- Division of Clinical Chemistry and Pharmacology, Department of Laboratory Medicine, Lunds University, Lund, Sweden
| | - Peter Nilsson-Ehle
- Division of Clinical Chemistry and Pharmacology, Department of Laboratory Medicine, Lunds University, Lund, Sweden
| | - Xiaoying Zhang
- Department of Cardiothoracic Surgery, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Guanghua Luo
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Ning Xu
- Division of Clinical Chemistry and Pharmacology, Department of Laboratory Medicine, Lunds University, Lund, Sweden
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