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Ruamyod K, Watanapa WB, Kakhai C, Nambundit P, Treewaree S, Wongsanupa P. Ferulic acid enhances insulin secretion by potentiating L-type Ca 2+ channel activation. JOURNAL OF INTEGRATIVE MEDICINE 2023; 21:99-105. [PMID: 36481247 DOI: 10.1016/j.joim.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 10/26/2022] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of ferulic acid, a natural compound, on pancreatic beta cell viability, Ca2+ channels, and insulin secretion. METHODS We studied the effects of ferulic acid on rat insulinoma cell line viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide viability assay. The whole-cell patch-clamp technique and enzyme-linked immunosorbent assay were also used to examine the action of ferulic acid on Ca2+ channels and insulin secretion, respectively. RESULTS Ferulic acid did not affect cell viability during exposures up to 72 h. The electrophysiological study demonstrated that ferulic acid rapidly and concentration-dependently increased L-type Ca2+ channel current, shifting its activation curve in the hyperpolarizing direction with a decreased slope factor, while the voltage dependence of inactivation was not affected. On the other hand, ferulic acid have no effect on T-type Ca2+ channels. Furthermore, ferulic acid significantly increased insulin secretion, an effect inhibited by nifedipine and Ca2+-free extracellular fluid, confirming that ferulic acid-induced insulin secretion in these cells was mediated by augmenting Ca2+ influx through L-type Ca2+ channel. Our data also suggest that this may be a direct, nongenomic action. CONCLUSION This is the first electrophysiological demonstration that acute ferulic acid treatment could increase L-type Ca2+ channel current in pancreatic β cells by enhancing its voltage dependence of activation, leading to insulin secretion.
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Affiliation(s)
- Katesirin Ruamyod
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Wattana B Watanapa
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
| | - Chanrit Kakhai
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pimchanok Nambundit
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sukrit Treewaree
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Parin Wongsanupa
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Angelovski M, Hadzi-Petrushev N, Mitrokhin V, Kamkin A, Mladenov M. Myocardial infarction and oxidative damage in animal models: objective and expectations from the application of cysteine derivatives. Toxicol Mech Methods 2023; 33:1-17. [PMID: 35450505 DOI: 10.1080/15376516.2022.2069530] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Reactive oxygen species (ROS) and associated oxidative stress are the main contributors to pathophysiological changes following myocardial infarction (MI), which is the principal cause of death from cardiovascular disease. The glutathione (GSH)/glutathione peroxidase (GPx) system appears to be the main and most active cardiac antioxidant mechanism. Hence, enhancement of the myocardial GSH system might have protective effects in the setting of MI. It follows that by increasing antioxidant capacity, the heart will be able to reduce the damage associated with MI and even prevent/weaken the occurrence of oxidative stress, which is highly ranked among the factors responsible for the occurrence of acute MI. For these reasons, the primary goal of future investigations should be to address the effects of different antioxidative compounds and especially cysteine derivatives like N-acetyl cysteine (NAC) and L-2-oxothiazolidine-4-carboxylic acid (OTC) as precursors responsible for the enhancement of the GSH-related antioxidant system's capacity. It is assumed that this will lay down the basis for elucidation of the mechanisms throughout which applicable doses of OTC will manifest a potentially positive impact in the reduction of adverse effects of acute MI. The inclusion of OTC in the models for prediction of the distribution of oxygen in infarcted animal hearts can help to upgrade existing computational models. Such a model would be based on computational geometries of the heart, but the inclusion of biochemical redox features in addition to angiogenic therapy, despite improvement of the post-infarcted oxygenated outcome could enhance the accuracy of the predictive values of oxygenation.
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Affiliation(s)
- Marija Angelovski
- Institute of Biology, Faculty of Natural Science and Mathematics, Ss Cyril and Methodius University, Skopje, North Macedonia
| | - Nikola Hadzi-Petrushev
- Institute of Biology, Faculty of Natural Science and Mathematics, Ss Cyril and Methodius University, Skopje, North Macedonia
| | - Vadim Mitrokhin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Andre Kamkin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Mitko Mladenov
- Institute of Biology, Faculty of Natural Science and Mathematics, Ss Cyril and Methodius University, Skopje, North Macedonia.,Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
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Mitrokhin V, Gorbacheva L, Vachrushev N, Hadzi-Petrushev N, Kamkin A, Mladenov M. Cardiomyocytes' prolonged IL-2 incubation induces enhancement in L-type Ca 2+ channels mediated by inhibitory-kappaB kinase/nuclear factor-kappaB signalling. Basic Clin Pharmacol Toxicol 2021; 128:234-240. [PMID: 32946663 DOI: 10.1111/bcpt.13491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/18/2020] [Accepted: 09/08/2020] [Indexed: 11/30/2022]
Abstract
The main objective of this study was to determine the primary intracellular signalling pathway affected by prolonged (2 hours) incubation in interleukin-2 (IL-2). Based on the inflammatory nature of IL-2, priority was given to the involvement of inhibitory-kappaB kinase/nuclear factor-kappaB (IKK/NF-κB) signalling. All of the experiments were performed on freshly prepared cardiomyocytes isolated from rat left ventricles. After isolation, the whole-cell voltage-clamp recordings were performed on single cells. After 2 hours of incubation in IL-2, the current at 0 mV was approximately 100% higher than at the start of the incubation. ACHP, a highly specific kinase β inhibitor, in a concentration of 10 nmol/L, caused significant reduction in the ICa,L . IL-2 (2 ng/mL) in the presence of 0.1 μmol/L IMD-0354 as a specific inhibitor of IKKβ, caused nearly no changes in the ICa,L . IL-2 (3 ng/mL) induced a significant increase in phosphorylated NF-κB p65. The cardiomyocytes incubated in a Kraftbrühe solution containing IL-2 plus PDTC as a specific inhibitor of inducible nitric oxide synthase (iNOS) for 2 hours had a similar ICa,L increase compared to the cells incubated only in IL-2. IL-2-induced enhancement in L-type Ca2+ channels was mediated by IKK/NF-κB signalling, but not via iNOS-mRNA signalling.
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Affiliation(s)
- Vadim Mitrokhin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Lyubov Gorbacheva
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Nikita Vachrushev
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Nikola Hadzi-Petrushev
- Faculty of Natural Sciences and Mathematics, Institute of Biology "Saints Cyril and Methodius" University, Skopje, Macedonia
| | - Andre Kamkin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
| | - Mitko Mladenov
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia
- Faculty of Natural Sciences and Mathematics, Institute of Biology "Saints Cyril and Methodius" University, Skopje, Macedonia
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Mitrokhin MV, Kalsin V, Kamkina O, Babkina I, Zotov A, Troitskiy VA, Mladenov MI, Kamkin GA. Participation of PKG and PKA-related pathways in the IFN-γ induced modulation of the BK Ca channel activity in human cardiac fibroblasts. J Pharmacol Sci 2019; 141:25-31. [PMID: 31533896 DOI: 10.1016/j.jphs.2019.08.006] [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: 02/20/2019] [Revised: 07/31/2019] [Accepted: 08/20/2019] [Indexed: 01/19/2023] Open
Abstract
This study was devoted to elucidating the interferon (IFN)-γ-induced signaling pathway and the interaction between protein kinase G (PKG) and protein kinase A (PKA) through large-conductance Ca(2+)-activated K(+) channels in human cardiac fibroblasts. The IK currents were recorded using a whole-cell patch clamp method. A large depolarization (+50 mV) and a high Ca2+ concentration (pCa 6.0) were used in the internal pipette solution to activate only the KCa channels. Iberiotoxin (Ibtx), which selectively inhibits BKCa channels at a concentration of 100 nmol/l, caused a significant reduction of basal IK. Adding IFN-γ in the presence of Ibtx had no effect on IK. Application of the IFN-γ caused a significant reduction in total K+ current amplitude, recorded with a 500 ms depolarizing pulse duration, to +50 mV from a holding potential of -80 mV. We tested the involvement of the sGC/cGMP/PKG signaling pathway by using specific PKG inhibitor KT 5823, potent sGC inhibitor NS 2028, and specific sGC agonist BAY 41-8543. The obtained data confirmed that only sGC participated in the IFN-γ-mediated BKCa channel modulation, which was mediated further by PKA. This study represents first evidence about the participation of the IFN-γ in the mechanisms responsible for BKCa modulation in HCFs. We also believe that this process occurs via negative crosstalk between the PKG- and PKA-associated pathways.
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Affiliation(s)
- M V Mitrokhin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Ostrovitjanova 1, Moscow 117997, Russia
| | - V Kalsin
- Federal Scientific Clinical Center for Specialized Types of Medical Assistance and Medical Technologies for the Federal Medical and Biological Agency, Orekhoviy Boulevard 28, Moscow 115682, Russia
| | - O Kamkina
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Ostrovitjanova 1, Moscow 117997, Russia
| | - I Babkina
- Federal Scientific Clinical Center for Specialized Types of Medical Assistance and Medical Technologies for the Federal Medical and Biological Agency, Orekhoviy Boulevard 28, Moscow 115682, Russia
| | - A Zotov
- Federal Scientific Clinical Center for Specialized Types of Medical Assistance and Medical Technologies for the Federal Medical and Biological Agency, Orekhoviy Boulevard 28, Moscow 115682, Russia
| | - V A Troitskiy
- Federal Scientific Clinical Center for Specialized Types of Medical Assistance and Medical Technologies for the Federal Medical and Biological Agency, Orekhoviy Boulevard 28, Moscow 115682, Russia
| | - M I Mladenov
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Ostrovitjanova 1, Moscow 117997, Russia; Faculty of Natural Sciences and Mathematics, Institute of Biology, "Ss. Cyril and Methodius" University, P.O. Box 162, 1000 Skopje, Macedonia.
| | - G A Kamkin
- Department of Fundamental and Applied Physiology, Russian National Research Medical University, Ostrovitjanova 1, Moscow 117997, Russia
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Mitrokhin V, Filatova T, Shim A, Bilichenko A, Abramochkin D, Kamkin A, Mladenov M. L-type Ca2+ channels’ involvement in IFN-γ-induced signaling in rat ventricular cardiomyocytes. J Physiol Biochem 2019; 75:109-115. [DOI: 10.1007/s13105-019-00662-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 01/22/2019] [Indexed: 12/31/2022]
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Mitrokhin V, Gorbacheva L, Mladenov M, Kamkin A. IL-2-induced NF-κB phosphorylation upregulates cation nonselective conductance in human cardiac fibroblasts. Int Immunopharmacol 2018; 64:170-174. [DOI: 10.1016/j.intimp.2018.08.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/18/2018] [Accepted: 08/30/2018] [Indexed: 12/30/2022]
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