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Banihani SA. Role of Lipoic Acid in Testosterone Production in Males. World J Mens Health 2024; 42:42.e52. [PMID: 38772537 DOI: 10.5534/wjmh.230291] [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: 10/11/2023] [Revised: 01/07/2024] [Accepted: 02/06/2024] [Indexed: 05/23/2024] Open
Abstract
Testosterone extends its impact beyond sexual function, playing a crucial role in shaping overall male health, including aspects such as muscle mass, bone density, mood regulation, and energy levels. Lipoic acid, a cofactor for specific enzymes, particularly dehydrogenases involved in cellular energy production, has been studied for its impact on testosterone. This comprehensive review systematically scoured PubMed and Scopus databases using the keywords "lipoic acid" and "testosterone." It encompassed all relevant English papers published from November 1971 to the present, including full texts and abstracts, along with research elucidating the biochemical mechanisms linking lipoic acid to testosterone. In summary, lipoic acid consistently restores testosterone levels, offering promise as an intervention in testicular health, especially in cases of testicular toxicity caused by various harmful agents. Its mechanisms encompass nitric oxide enhancement, fortification of testicular antioxidants, elevation of luteinizing hormone, enhancement of steroidogenesis, and the maintenance of energy production. These mechanisms underscore the therapeutic potential of lipoic acid for testicular health.
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Affiliation(s)
- Saleem Ali Banihani
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan.
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2
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Alpha-Lipoic Acid Plays a Role in Endometriosis: New Evidence on Inflammasome-Mediated Interleukin Production, Cellular Adhesion and Invasion. Molecules 2021; 26:molecules26020288. [PMID: 33430114 PMCID: PMC7826935 DOI: 10.3390/molecules26020288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 12/12/2022] Open
Abstract
Endometriosis is an estrogen-linked gynecological disease defined by the presence of endometrial tissue on extrauterine sites where it forms invasive lesions. Alterations in estrogen-mediated cellular signaling seems to have an essential role in the pathogenesis of endometriosis. Higher estrogen receptor (ER)-β levels and enhanced ER-β activity were detected in endometriotic tissues. It is well known that ER-β interacts with components of the cytoplasmic inflammasome-3 (NALP-3), the NALP-3 activation increases interleukin (IL)-1β and IL-18, enhancing cellular adhesion and proliferation. Otherwise, the inhibition of ER-β activity suppresses the ectopic lesions growth. The present study aims to investigate the potential effect of α-lipoic acid (ALA) on NALP-3 and ER-β expression using a western blot analysis, NALP-3-induced cytokines production by ELISA, migration and invasion of immortalized epithelial (12Z) and stromal endometriotic cells (22B) using a 3D culture invasion assay, and matrix-metalloprotease (MMPs) activity using gelatin zymography. ALA significantly reduces ER-β, NALP-3 protein expression/activity and the secretion of IL-1β and IL-18 in both 12Z and 22B cells. ALA treatment reduces cellular adhesion and invasion via a lower expression of adhesion molecules and MMPs activities. These results provide convincing evidence that ALA might inhibit endometriosis progression.
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Hajizadeh-Sharafabad F, Sharifi Zahabi E. Role of alpha-lipoic acid in vascular function: A systematic review of human intervention studies. Crit Rev Food Sci Nutr 2020; 62:2928-2941. [DOI: 10.1080/10408398.2020.1861425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Fatemeh Hajizadeh-Sharafabad
- Nutrition Research Center, Department of Clinical Nutrition, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Student Research Committee, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Sharifi Zahabi
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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Endothelial Nitric Oxide Mediates the Anti-Atherosclerotic Action of Torenia concolor Lindley var. Formosama Yamazaki. Int J Mol Sci 2020; 21:ijms21041532. [PMID: 32102326 PMCID: PMC7073175 DOI: 10.3390/ijms21041532] [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: 12/31/2019] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 12/29/2022] Open
Abstract
Torenia concolor Lindley var. formosama Yamazaki ethanolic extract (TCEE) is reported to have anti-inflammatory and anti-obesity properties. However, the effects of TCEE and its underlying mechanisms in the activation of endothelial nitric oxide synthase (eNOS) have not yet been investigated. Increasing the endothelium-derived nitric oxide (NO) production has been known to be beneficial against the development of cardiovascular diseases. In this study, we investigated the effect of TCEE on eNOS activation and NO-related endothelial function and inflammation by using an in vitro system. In endothelial cells (ECs), TCEE increased NO production in a concentration-dependent manner without affecting the expression of eNOS. In addition, TCEE increased the phosphorylation of eNOS at serine 635 residue (Ser635) and Ser1179, Akt at Ser473, calmodulin kinase II (CaMKII) at threonine residue 286 (Thr286), and AMP-activated protein kinase (AMPK) at Thr172. Moreover, TCEE-induced NO production, and EC proliferation, migration, and tube formation were diminished by pretreatment with LY294002 (an Akt inhibitor), KN62 (a CaMKII inhibitor), and compound C (an AMPK inhibitor). Additionally, TCEE attenuated the tumor necrosis factor-α-induced inflammatory response as evidenced by the expression of adhesion molecules in ECs and monocyte adhesion onto ECs. These inflammatory effects of TCEE were abolished by L-NG-nitroarginine methyl ester (an NOS inhibitor). Moreover, chronic treatment with TCEE attenuated hyperlipidemia, systemic and aortic inflammatory response, and the atherosclerotic lesions in apolipoprotein E-deficient mice. Collectively, our findings suggest that TCEE may confer protection from atherosclerosis by preventing endothelial dysfunction.
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Di Nicuolo F, D'Ippolito S, Castellani R, Rossi ED, Masciullo V, Specchia M, Mariani M, Pontecorvi A, Scambia G, Di Simone N. Effect of alpha-lipoic acid and myoinositol on endometrial inflammasome from recurrent pregnancy loss women. Am J Reprod Immunol 2019; 82:e13153. [PMID: 31148259 DOI: 10.1111/aji.13153] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 04/05/2019] [Accepted: 05/24/2019] [Indexed: 12/22/2022] Open
Abstract
PROBLEM A significant increased expression/activation of one of the most well-characterized inflammasomes, the NAcht leucine-rich-repeat protein-3 (NALP-3), in the endometrium from idiopathic recurrent pregnancy loss women (RPL) has been previously found by our research group. We therefore, suggested this event as being one of the molecular mechanisms altering endometrial inflammatory status during early pregnancy. In the present research, we attempt to investigate whether molecules with anti-inflammatory activity, alpha-lipoic acid (ALA), and/or myoinositol affect the endometrial NALP-3 expression and activation. METHOD OF STUDY Women with a history of idiopathic RPL (n = 30) were included in the study and compared to a control group (n = 15). Endometrial tissues were collected by hysteroscopy during the mid-luteal phase. RPL women underwent a three-month prescription of tablets containing ALA plus myoinositol (Sinopol® ). After treatment, hysteroscopic biopsies were repeated in RPL patients. Inflammasome expression was evaluated by immunohistochemical and Western blot analysis. NALP-3 activation was studied by quantifying the secretion of both caspase-1 and interleukin (IL)-1ß and IL-18 through ELISA. In ex vivo experiments, the effects of each molecule on endometrial inflammasome were studied. RESULTS Sinopol® significantly reduced the RPL endometrial inflammasome expression and activation. ALA, but not myoinositol, significantly reduced the endometrial inflammasome expression and activity. CONCLUSION Our data suggest a role for ALA on RPL inflammasome. Understanding the mechanisms involved in RPL and the observation that specific molecules are able to interfere with such complex at the endometrium might provide new rational design approaches to a personalized evaluation of endometrial status and, ultimately, a targeted medicine.
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Affiliation(s)
- Fiorella Di Nicuolo
- Paolo VI International Scientific Institute, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Silvia D'Ippolito
- U.O.C. di Ostetricia e Patologia Ostetrica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia.,Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Roberta Castellani
- Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Esther Diana Rossi
- U.O.C. di Anatomia Patologica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia
| | - Valeria Masciullo
- Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia.,U.O.C. di Ginecologia Oncologica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia
| | - Monia Specchia
- Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Marco Mariani
- Istituto di Sanità Pubblica, Sezione di Igiene, Università Cattolica Del Sacro Cuore, Roma, Italia
| | - Alfredo Pontecorvi
- Paolo VI International Scientific Institute, Università Cattolica del Sacro Cuore, Roma, Italia.,U.O.C di Endocrinologia e Diabetologia, Dipartimento di Scienze Gastroenterologiche, Endocrino-Metaboliche e Nefro-Urologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia.,Istituto di Patologia Medica, Università Cattolica del Sacro Cuore, Roma, Italia
| | - Giovanni Scambia
- Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia.,U.O.C. di Ginecologia Oncologica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia
| | - Nicoletta Di Simone
- U.O.C. di Ostetricia e Patologia Ostetrica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italia.,Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Roma, Italia
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Wajih N, Basu S, Ucer KB, Rigal F, Shakya A, Rahbar E, Vachharajani V, Guthold M, Gladwin MT, Smith LM, Kim-Shapiro DB. Erythrocytic bioactivation of nitrite and its potentiation by far-red light. Redox Biol 2019; 20:442-450. [PMID: 30423533 PMCID: PMC6230921 DOI: 10.1016/j.redox.2018.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/28/2018] [Accepted: 11/01/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Nitrite is reduced by heme-proteins and molybdenum-containing enzymes to form the important signaling molecule nitric oxide (NO), mediating NO signaling. Substantial evidence suggests that deoxygenated hemoglobin within red blood cells (RBCs) is the main erythrocytic protein responsible for mediating nitrite-dependent NO signaling. In other work, infrared and far red light have been shown to have therapeutic potential that some attribute to production of NO. Here we explore whether a combination of nitrite and far red light treatment has an additive effect in NO-dependent processes, and whether this effect is mediated by RBCs. METHODS AND RESULTS Using photoacoustic imaging in a rat model as a function of varying inspired oxygen, we found that far red light (660 nm, five min. exposure) and nitrite feeding (three weeks in drinking water at 100 mg/L) each separately increased tissue oxygenation and vessel diameter, and the combined treatment was additive. We also employed inhibition of human platelet activation measured by flow cytometry to assess RBC-dependent nitrite bioactivation and found that far red light dramatically potentiates platelet inhibition by nitrite. Blocking RBC-surface thiols abrogated these effects of nitrite and far-red light. RBC-dependent production of NO was also shown to be enhanced by far red light using a chemiluminescence-based nitric oxide analyzer. In addition, RBC-dependent bioactivation of nitrite led to prolonged lag times for clotting in platelet poor plasma that was enhanced by exposure to far red light. CONCLUSIONS Our results suggest that nitrite leads to the formation of a photolabile RBC surface thiol-bound species such as an S-nitrosothiol or heme-nitrosyl (NO-bound heme) for which far red light enhances NO signaling. These findings expand our understanding of RBC-mediated NO production from nitrite. This pathway of NO production may have therapeutic potential in several applications including thrombosis, and, thus, warrants further study.
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Affiliation(s)
- Nadeem Wajih
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Swati Basu
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Kamil B Ucer
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States.
| | - Fernando Rigal
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Aryatara Shakya
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States.
| | - Elaheh Rahbar
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Vidula Vachharajani
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States; Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Martin Guthold
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Mark T Gladwin
- Heart, Lung, Blood, and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, United States; Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15261, United States.
| | - Lane M Smith
- Department of Emergency Medicine, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Daniel B Kim-Shapiro
- Department of Physics,Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
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7
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Kim-Shapiro DB, Gladwin MT. Nitric oxide pathology and therapeutics in sickle cell disease. Clin Hemorheol Microcirc 2018; 68:223-237. [PMID: 29614634 PMCID: PMC5911689 DOI: 10.3233/ch-189009] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Sickle cell disease is caused by a mutant form of hemoglobin that polymerizes under hypoxic conditions which leads to red blood cell (RBC) distortion, calcium-influx mediated RBC dehydration, increased RBC adhesivity, reduced RBC deformability, increased RBC fragility, and hemolysis. These impairments in RBC structure and function result in multifaceted downstream pathology including inflammation, endothelial cell activation, platelet and leukocyte activation and adhesion, and thrombosis, all of which contribute vascular occlusion and substantial morbidity and mortality. Hemoglobin released upon RBC hemolysis scavenges nitric oxide (NO) and generates reactive oxygen species (ROS) and thereby decreases bioavailability of this important signaling molecule. As the endothelium-derived relaxing factor, NO acts as a vasodilator and also decreases platelet, leukocyte, and endothelial cell activation. Thus, low NO bioavailability contributes to pathology in sickle cell disease and its restoration could serve as an effective treatment. Despite its promise, clinical trials based on restoring NO bioavailability have so far been mainly disappointing. However, particular "NO donating" agents such as nitrite, which unlike some other NO donors can improve sickle RBC properties, may yet prove effective.
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Affiliation(s)
- Daniel B. Kim-Shapiro
- Department of Physics and the Translational Science Center, Wake Forest University, Winston-Salem NC 27109
| | - Mark T. Gladwin
- Heart, Lung, Blood and Vascular Medicine Institute and the Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA
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8
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Wajih N, Basu S, Jailwala A, Kim HW, Ostrowski D, Perlegas A, Bolden CA, Buechler NL, Gladwin MT, Caudell DL, Rahbar E, Alexander-Miller MA, Vachharajani V, Kim-Shapiro DB. Potential therapeutic action of nitrite in sickle cell disease. Redox Biol 2017; 12:1026-1039. [PMID: 28511346 PMCID: PMC5430577 DOI: 10.1016/j.redox.2017.05.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/07/2017] [Accepted: 05/08/2017] [Indexed: 12/26/2022] Open
Abstract
Sickle cell disease is caused by a mutant form of hemoglobin that polymerizes under hypoxic conditions, increasing rigidity, fragility, calcium influx-mediated dehydration, and adhesivity of red blood cells. Increased red cell fragility results in hemolysis, which reduces nitric oxide (NO) bioavailability, and induces platelet activation and inflammation leading to adhesion of circulating blood cells. Nitric Oxide inhibits adhesion and platelet activation. Nitrite has emerged as an attractive therapeutic agent that targets delivery of NO activity to areas of hypoxia through bioactivation by deoxygenated red blood cell hemoglobin. In this study, we demonstrate anti-platelet activity of nitrite at doses achievable through dietary interventions with comparison to similar doses with other NO donating agents. Unlike other NO donating agents, nitrite activity is shown to be potentiated in the presence of red blood cells in hypoxic conditions. We also show that nitrite reduces calcium associated loss of phospholipid asymmetry that is associated with increased red cell adhesion, and that red cell deformability is also improved. We show that nitrite inhibits red cell adhesion in a microfluidic flow-channel assay after endothelial cell activation. In further investigations, we show that leukocyte and platelet adhesion is blunted in nitrite-fed wild type mice compared to control after either lipopolysaccharide- or hemolysis-induced inflammation. Moreover, we demonstrate that nitrite treatment results in a reduction in adhesion of circulating blood cells and reduced red blood cell hemolysis in humanized transgenic sickle cell mice subjected to local hypoxia. These data suggest that nitrite is an effective anti-platelet and anti-adhesion agent that is activated by red blood cells, with enhanced potency under physiological hypoxia and in venous blood that may be useful therapeutically.
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Affiliation(s)
- Nadeem Wajih
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States; Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Swati Basu
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States; Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Anuj Jailwala
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Hee Won Kim
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States
| | - David Ostrowski
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Andreas Perlegas
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Crystal A Bolden
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States
| | - Nancy L Buechler
- Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States
| | - Mark T Gladwin
- Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15213, United States; Department of Medicine, Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213, United States
| | - David L Caudell
- Department of Pathology-Comparative Medicine, Section on Rheumatology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States
| | - Elaheh Rahbar
- Department of Biomedical Engineering, Section on Rheumatology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States
| | - Martha A Alexander-Miller
- Department of Microbiology and Immunology, Section on Rheumatology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States
| | - Vidula Vachharajani
- Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States; Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, United States.
| | - Daniel B Kim-Shapiro
- Department of Physics, Wake Forest University, Winston-Salem, NC 27109, United States; Translational Science Center, Wake Forest University, Winston-Salem, NC 27109, United States.
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9
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El-Gowelli HM, Saad EI, Abdel-Galil AGA, Ibrahim ER. Co-administration of α-lipoic acid and cyclosporine aggravates colon ulceration of acetic acid-induced ulcerative colitis via facilitation of NO/COX-2/miR-210 cascade. Toxicol Appl Pharmacol 2015; 288:300-12. [PMID: 26276312 DOI: 10.1016/j.taap.2015.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/22/2015] [Accepted: 08/05/2015] [Indexed: 02/07/2023]
Abstract
In this work, α-lipoic acid and cyclosporine demonstrated significant protection against acetic acid-induced ulcerative colitis in rats. We proposed that α-lipoic acid and cyclosporine co-administration might modulate their individual effects. Induction of ulcerative colitis in rats was performed by intra-rectal acetic acid (5% v/v) administration for 3 consecutive days. Effects of individual or combined used of α-lipoic acid (35 mg/kg ip) or cyclosporine (5mg/kg sc) for 6 days starting 2 days prior to acetic acid were assessed. Acetic acid caused colon ulceration, bloody diarrhea and weight loss. Histologically, there was mucosal atrophy and inflammatory cells infiltration in submucosa, associated with depletion of colon reduced glutathione, superoxide dismutase and catalase activities and elevated colon malondialdehyde, serum C-reactive protein (C-RP) and tumor necrosis factor-α (TNF-α). Colon gene expression of cyclooxygenase-2 and miR-210 was also elevated. These devastating effects of acetic acid were abolished upon concurrent administration of α-lipoic acid. Alternatively, cyclosporine caused partial protection against acetic acid-induced ulcerative colitis. Cyclosporine did not restore colon reduced glutathione, catalase activity, serum C-RP or TNF-α. Unexpectedly, co-administration of α-lipoic acid and cyclosporine aggravated colon ulceration. Concomitant use of α-lipoic acid and cyclosporine significantly increased nitric oxide production, cyclooxygenase-2 and miR-210 gene expression compared to all other studied groups. The current findings suggest that facilitation of nitric oxide/cyclooxygenase-2/miR-210 cascade constitutes, at least partially, the cellular mechanism by which concurrent use of α-lipoic acid and cyclosporine aggravates colon damage. Collectively, the present work highlights the probable risk of using α-lipoic acid/cyclosporine combination in ulcerative colitis patients.
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Affiliation(s)
- Hanan M El-Gowelli
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Egypt.
| | - Evan I Saad
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Egypt
| | | | - Einas R Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Egypt
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10
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Di Tomo P, Di Silvestre S, Cordone VGP, Giardinelli A, Faricelli B, Pipino C, Lanuti P, Peng T, Formoso G, Yang D, Arduini A, Chiarelli F, Pandolfi A, Di Pietro N. Centella asiatica and lipoic acid, or a combination thereof, inhibit monocyte adhesion to endothelial cells from umbilical cords of gestational diabetic women. Nutr Metab Cardiovasc Dis 2015; 25:659-666. [PMID: 26026207 DOI: 10.1016/j.numecd.2015.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIMS Diabetes mellitus is associated with inflammatory endothelial activation and increased vascular leukocyte adhesion molecule expression, both playing a prominent role in the development of vascular complications. Centella asiatica (CA) and Lipoic Acid (LA) have shown anti-inflammatory and anti-oxidant properties in a variety of experimental models; however, their action on human umbilical vein endothelial cells (HUVECs), chronically exposed to hyperglycemia and pro-inflammatory environment during pregnancy, is still unknown. METHODS AND RESULTS In HUVECs from umbilical cords of gestational diabetic (GD) or healthy (C) women, both CA and LA affected tumor necrosis factor-α (TNF-α)-induced inflammation, being associated with a significant decrease in vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) expression (western blot) and exposure (flow cytometry), as well as monocyte-HUVECs interaction (adhesion assay). Notably, this was associated with a significant reduction of an index of nitro-oxidative stress, such as the intracellular peroxynitrite levels (fluorescence detection by cytometric analysis), Mitogen-Activated Protein kinase (p44/42 MAPK) expression/phosphorylation levels and Nuclear Factor kappa-light-chain-enhancer of activated B cells (NF-κB p65) cytoplasm-nucleus translocation (flow cytometry). Overall our results indicate that both CA and LA used separately, and even better when combined, are effective to reduce the inflammatory response in TNF-α-treated HUVECs. Notably, this was more significant in GD than in C-HUVECs and also evident at baseline. CONCLUSION In conclusion, our in vitro study demonstrates that both CA and LA, or a combination thereof, are able to mitigate the potentially dangerous effects on the endothelium of chronic exposure to hyperglycemia in vivo.
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Affiliation(s)
- P Di Tomo
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - S Di Silvestre
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - V G P Cordone
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - A Giardinelli
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - B Faricelli
- Department of Medicine and Aging Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - C Pipino
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - P Lanuti
- Department of Medicine and Aging Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - T Peng
- Morningside Laboratory for Chemical Biology and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - G Formoso
- Department of Medicine and Aging Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - D Yang
- Morningside Laboratory for Chemical Biology and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - A Arduini
- CoreQuest Sagl, Manno, Ticino, Switzerland
| | - F Chiarelli
- Department of Medicine and Aging Sciences, "G. d'Annunzio" University, Chieti, Italy
| | - A Pandolfi
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy
| | - N Di Pietro
- Department of Medical, Oral and Biotechnological Sciences, "G. d'Annunzio" University, Chieti, Italy; Aging Research Center, Ce.S.I., "Gabriele d'Annunzio" University Foundation, Chieti, Italy.
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11
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Bozhokina E, Khaitlina S, Gamaley I. Dihydrolipoic but not alpha-lipoic acid affects susceptibility of eukaryotic cells to bacterial invasion. Biochem Biophys Res Commun 2015; 460:697-702. [PMID: 25817791 DOI: 10.1016/j.bbrc.2015.03.092] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 03/06/2015] [Indexed: 11/25/2022]
Abstract
Sensitivity of eukaryotic cells to facultative pathogens can depend on physiological state of host cells. Previously we have shown that pretreatment of HeLa cells with N-acetylcysteine (NAC) makes the cells 2-3-fold more sensitive to invasion by the wild-type Serratia grimesii and recombinant Escherichia coli expressing gene of actin-specific metalloprotease grimelysin [1]. To evaluate the impact of chemically different antioxidants, in the present work we studied the effects of α-Lipoic acid (LA) and dihydrolipoic acid (DHLA) on efficiency of S. grimesii and recombinant E. coli expressing grimelysin gene to penetrate into HeLa and CaCo cells. Similarly to the effect of NAC, pretreatment of HeLa and CaCo cells with 0.6 or 1.25 mM DHLA increased the entry of grimelysin producing bacteria by a factor of 2.5 and 3 for the wild-type S. grimesii and recombinant E. coli, respectively. In contrast, pretreatment of the cells with 0.6 or 1.25 mM LA did not affect the bacteria uptake. The increased invasion of HeLa and CaCo cells correlated with the enhanced expression of E-cadherin and β-catenin genes, whereas expression of these genes in the LA-treated cells was not changed. Comparison of these results suggests that it is sulfhydryl group of DHLA that promotes efficient modification of cell properties assisting bacterial uptake. We assume that the NAC- and DHLA-induced stimulation of the E-cadherin-catenin pathway contributes to the increased internalization of the grimelysin producing bacteria within transformed cells.
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Affiliation(s)
| | - Sofia Khaitlina
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia.
| | - Irina Gamaley
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
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12
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Ying Z, Xie X, Chen M, Yi K, Rajagopalan S. Alpha-lipoic acid activates eNOS through activation of PI3-kinase/Akt signaling pathway. Vascul Pharmacol 2014; 64:28-35. [PMID: 25460366 DOI: 10.1016/j.vph.2014.11.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/21/2014] [Accepted: 11/08/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Lipoic acid (LA) exerts therapeutic effects on cardiovascular diseases. However, the mechanisms underlying these therapeutic effects remain elusive. Endothelial nitric oxide synthase (eNOS) plays a critical role in cardiovascular homeostasis. LA was shown to potently activate PI3-kinase/Akt pathway, and the latter is critical in the regulation of eNOS activity. In the present study, we test the hypothesis that LA improves endothelial function through PI3-kinase/Akt-mediated eNOS activation. METHODS AND RESULTS Western blot analysis showed that LA time- and dose-dependently induced phosphorylation of Akt and eNOS in human umbilical vein endothelial cells (HUVECs). Both PI3-kinase and Akt inhibitors abolished LA-induced eNOS phosphorylation, indicating that LA induces eNOS phosphorylation through the PI3-kinase/Akt pathway. This increase in eNOS phosphorylation was paralleled by an increase in NO release by HUVECs, supporting its relevance in eNOS activity regulation. Myograph analysis revealed that LA relaxed phenylephrine-induced contraction. Endothelium removal and NOS inhibition by L-NAME abolished this vasodilator action of LA, and Akt but not AMPK inhibition significantly reduced the vasodilator action of LA, indicating that it is mediated by PI3-kinase/Akt pathway-dependent activation of eNOS. Consistent with in vitro results, intraperitoneal injection with LA significantly increased plasma nitrite and nitrate levels in C57Bl/6j mice. CONCLUSIONS LA activates eNOS through a PI3-kinase/Akt signaling pathway-dependent mechanism, offering a potential molecular basis for the therapeutic effects of LA on cardiovascular diseases.
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Affiliation(s)
- Zhekang Ying
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, PR China; Department of Medicine Cardiology Division, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
| | - Xiaoyun Xie
- Division of Geriatric Medicine, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, PR China
| | - Minjie Chen
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, PR China; Department of Medicine Cardiology Division, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Kevin Yi
- Department of Medicine Cardiology Division, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Sanjay Rajagopalan
- Department of Medicine Cardiology Division, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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