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Sztolsztener K, Chabowski A. Hepatic-Metabolic Activity of α-Lipoic Acid-Its Influence on Sphingolipid Metabolism and PI3K/Akt/mTOR Pathway in a Rat Model of Metabolic Dysfunction-Associated Steatotic Liver Disease. Nutrients 2024; 16:1501. [PMID: 38794739 PMCID: PMC11124255 DOI: 10.3390/nu16101501] [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: 04/25/2024] [Revised: 05/13/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Excessive lipid deposition affects hepatic homeostasis and contributes to the development of insulin resistance as a crucial factor for the deterioration of simple steatosis to steatohepatitis. So, it is essential to search for an effective agent for a new therapy for hepatic steatosis development before it progresses to the more advanced stages. Our study aimed to evaluate the potential protective effect of α-lipoic acid (α-LA) administration on the intrahepatic metabolism of sphingolipid and insulin signaling transduction in rats with metabolic dysfunction-associated steatotic liver disease (MASLD). The experiment was conducted on male Wistar rats subjected to a standard diet or a high-fat diet (HFD) and an intragastrically α-LA administration for eight weeks. High-performance liquid chromatography (HPLC) was used to determine sphingolipid content. Immunoblotting was used to measure the expression of selected proteins from sphingolipid and insulin signaling pathways. Multiplex assay kit was used to assess the level of the phosphorylated form of proteins from PI3K/Akt/mTOR transduction. The results revealed that α-LA decreased sphinganine, dihydroceramide, and sphingosine levels and increased ceramide level. We also observed an increased the concentration of phosphorylated forms of sphingosine and sphinganine. Changes in the expression of proteins from sphingolipid metabolism were consistent with changes in sphingolipid pools. Treatment with α-LA activated the PI3K/Akt/mTOR pathway, which enhanced the hepatic phosphorylation of Akt and mTOR. Based on these data, we concluded that α-lipoic acid may alleviate glucose intolerance and may have a protective influence on the sphingolipid metabolism under HFD; thus, this antioxidant appears to protect from MASLD development and steatosis deterioration.
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Affiliation(s)
- Klaudia Sztolsztener
- Department of Physiology, Medical University of Bialystok, Mickiewicz 2C Str., 15-222 Bialystok, Poland;
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Pagano G, Lyakhovich A, Pallardó FV, Tiano L, Zatterale A, Trifuoggi M. Mitochondrial dysfunction in Fragile X syndrome and Fragile X-associated tremor/ataxia syndrome: prospect use of antioxidants and mitochondrial nutrients. Mol Biol Rep 2024; 51:480. [PMID: 38578387 PMCID: PMC10997711 DOI: 10.1007/s11033-024-09415-7] [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: 12/03/2023] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Fragile X syndrome (FXS) is a genetic disorder characterized by mutation in the FMR1 gene, leading to the absence or reduced levels of fragile X Messenger Ribonucleoprotein 1 (FMRP). This results in neurodevelopmental deficits, including autistic spectrum conditions. On the other hand, Fragile X-associated tremor/ataxia syndrome (FXTAS) is a distinct disorder caused by the premutation in the FMR1 gene. FXTAS is associated with elevated levels of FMR1 mRNA, leading to neurodegenerative manifestations such as tremors and ataxia.Mounting evidence suggests a link between both syndromes and mitochondrial dysfunction (MDF). In this minireview, we critically examine the intricate relationship between FXS, FXTAS, and MDF, focusing on potential therapeutic avenues to counteract or mitigate their adverse effects. Specifically, we explore the role of mitochondrial cofactors and antioxidants, with a particular emphasis on alpha-lipoic acid (ALA), carnitine (CARN) and Coenzyme Q10 (CoQ10). Findings from this review will contribute to a deeper understanding of these disorders and foster novel therapeutic strategies to enhance patient outcomes.
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Affiliation(s)
- Giovanni Pagano
- Department of Chemical Sciences, Federico II Naples University, via Cintia, Naples, I-80126, Italy.
| | | | - Federico V Pallardó
- Department of Physiology, Faculty of Medicine and Dentistry, University of Valencia-INCLIVA, CIBERER, Valencia, E-46010, Spain
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnical University of Marche, Ancona, I-60121, Italy
| | | | - Marco Trifuoggi
- Department of Chemical Sciences, Federico II Naples University, via Cintia, Naples, I-80126, Italy
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Hosny EN, Sawie HG, Abou-Seif HS, Khadrawy YA. Effect of caffeine-chitosan nanoparticles and α-lipoic acid on the cardiovascular changes induced in rat model of obesity. Int Immunopharmacol 2024; 129:111627. [PMID: 38309094 DOI: 10.1016/j.intimp.2024.111627] [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: 10/21/2023] [Revised: 01/19/2024] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
The current research aims to study the therapeutic efficacy of alpha-lipoic acid (α-LA) and caffeine-loaded chitosan nanoparticles (Caf-CNs) against cardiovascular complications induced by obesity. Rats were divided randomly into: control, high fat diet (HFD) induced obesity rat model, obese rats treated with α-LA and/or Caf-CNs. Triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), Interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) as well as activities of lactate dehydrogenase (LDH) and creatine kinase-MB (CK-MB) significantly increased in the serum of obese rats. In addition, plasma atherogenic index, atherogenic coefficient and Castelli's risk indices I and II showed a significant increase. Additionally, levels of malondialdehyde (MDA) and nitric oxide (NO) and activity of monoamine oxidase (MAO) were significantly elevated in heart tissues of obese rats. However, cardiac Na+/K+-ATPase and acetylcholinesterase (AchE) activities and reduced glutathione (GSH), serotonin (5-HT), norepinephrine (NE) and dopamine (DA) as well as serum high-density lipoprotein cholesterol (HDL-C) were significantly reduced in obese rats. Treatment with α-LA and/or Caf-CNs ameliorated almost all the biochemical and histopathological alterations caused by obesity. In conclusion, the present data revealed that α-LA and/or Caf-CNs may be an effective therapeutic approach against cardiac complications caused by obesity through their antilipemic, anti-atherogenic, antioxidant, and anti-inflammatory activities.
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Affiliation(s)
- Eman N Hosny
- Medical Physiology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza, Egypt.
| | - Hussein G Sawie
- Medical Physiology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza, Egypt
| | - Howida S Abou-Seif
- Medical Physiology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza, Egypt
| | - Yasser A Khadrawy
- Medical Physiology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza, Egypt
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Xu L, Zhang C, Bao J, Han G, Wang C, Cai Y, Xu G, Sun H, Liu M. Alpha-lipoic Acid Prevents Bone Loss in Type 2 Diabetes and Postmenopausal Osteoporosis Coexisting Conditions by Modulating the YAP/Glut4 Pathway. Cell Biochem Biophys 2024:10.1007/s12013-024-01216-w. [PMID: 38261247 DOI: 10.1007/s12013-024-01216-w] [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: 12/14/2022] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
This study aims to characterize the bone-protecting effects of Alpha-lipoic acid (ALA), a potent antioxidant, against the detrimental effects of the coexistence of type 2 diabetes mellitus (T2DM) and postmenopausal osteoporosis (POP) and identify the possible mechanisms with particular reference to its modulation of YAP/Glut4 pathway. The T2DM and POP coexisting model was induced in mice by high fat diet (HFD) + Streptozocin (STZ) + ovariectomy (OVX). The mice in the treatment groups were given ALA for 10 weeks. In the in vitro study, MC3T3-E1 cells were induced with 500 μM methylglyoxal for 24 h with or without pretreatment with ALA for 24 h. The oxidative and antioxidative biomarkers, bone microarchitecture, histo-morphology, and related protein expression of apoptosis, osteogenic differentiation and the YAP/Glut4 pathway were detected. The results showed ALA could improve glucose tolerance, inhibit oxidative stress and apoptosis and alleviate bone loss. Further study by siRNA technology revealed that the YAP/Glut4 pathway was implicated in the pathogenesis of bone loss due to the coexistence of T2DM and POP. Taken together, the present study has demonstrated for the first time that ALA exerts potent protective effects against bone loss in T2DM and POP coexisting conditions by modulating the YAP/Glut4 pathway.
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Affiliation(s)
- Lei Xu
- Office of Ethics Committee, the First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Chunfang Zhang
- Department of Pathology, the First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Jiawu Bao
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Guozhu Han
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Changyuan Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Yuanqing Cai
- Department of Orthopaedics, the First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Gang Xu
- Department of Orthopaedics, the First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Huijun Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China.
| | - Mozhen Liu
- Department of Orthopaedics, the First Affiliated Hospital, Dalian Medical University, Dalian, China.
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Bossio S, Perri A, Gallo R, De Bartolo A, Rago V, La Russa D, Di Dio M, La Vignera S, Calogero AE, Vitale G, Aversa A. Alpha-Lipoic Acid Reduces Cell Growth, Inhibits Autophagy, and Counteracts Prostate Cancer Cell Migration and Invasion: Evidence from In Vitro Studies. Int J Mol Sci 2023; 24:17111. [PMID: 38069431 PMCID: PMC10707055 DOI: 10.3390/ijms242317111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Alpha-lipoic acid (ALA) is a natural antioxidant dithiol compound, exerting antiproliferative and antimetastatic effects in various cancer cell lines. In our study, we demonstrated that ALA reduces the cell growth of prostate cancer cells LNCaP and DU-145. Western blot results revealed that in both cancer cells, ALA, by upregulating pmTOR expression, reduced the protein content of two autophagy initiation markers, Beclin-1 and MAPLC3. Concomitantly, MTT assays showed that chloroquine (CQ) exposure, a well-known autophagy inhibitor, reduced cells' viability. This was more evident for treatment using the combination ALA + CQ, suggesting that ALA can reduce cells' viability by inhibiting autophagy. In addition, in DU-145 cells we observed that ALA affected the oxidative/redox balance system by deregulating the KEAP1/Nrf2/p62 signaling pathway. ALA decreased ROS production, SOD1 and GSTP1 protein expression, and significantly reduced the cytosolic and nuclear content of the transcription factor Nrf2, concomitantly downregulating p62, suggesting that ALA disrupted p62-Nrf2 feedback loop. Conversely, in LNCaP cells, ALA exposure upregulated both SOD1 and p62 protein expression, but did not affect the KEAP1/Nrf2/p62 signaling pathway. In addition, wound-healing, Western blot, and immunofluorescence assays evidenced that ALA significantly reduced the motility of LNCaP and DU-145 cells and downregulated the protein expression of TGFβ1 and vimentin and the deposition of fibronectin. Finally, a soft agar assay revealed that ALA decreased the colony formation of both the prostate cancer cells by affecting the anchorage independent growth. Collectively, our in vitro evidence demonstrated that in prostate cancer cells, ALA reduces cell growth and counteracts both migration and invasion. Further studies are needed in order to achieve a better understanding of the underlined molecular mechanisms.
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Affiliation(s)
- Sabrina Bossio
- Department of Experimental and Clinical Medicine, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy; (S.B.); (A.P.)
| | - Anna Perri
- Department of Experimental and Clinical Medicine, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy; (S.B.); (A.P.)
| | - Raffaella Gallo
- Laboratory of Immunology, Department of Experimental and Clinical Medicine, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy;
| | - Anna De Bartolo
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, University of Calabria, 87036 Rende, Italy;
| | - Vittoria Rago
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy;
| | - Daniele La Russa
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy;
| | - Michele Di Dio
- Division of Urology, Department of Surgery, Annunziata Hospital, 87100 Cosenza, Italy;
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, 95124 Catania, Italy; (S.L.V.); (A.E.C.)
| | - Aldo E. Calogero
- Department of Clinical and Experimental Medicine, University of Catania, 95124 Catania, Italy; (S.L.V.); (A.E.C.)
| | - Giovanni Vitale
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), University of Milan, 20133 Milan, Italy;
- Laboratory of Geriatric and Oncologic Neuroendocrinology Research, IRCCS Istituto Auxologico Italiano, 20145 Milan, Italy
| | - Antonio Aversa
- Department of Experimental and Clinical Medicine, University of Catanzaro “Magna Græcia”, 88100 Catanzaro, Italy; (S.B.); (A.P.)
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Alshangiti DM, Ghobashy MM, Alqahtani HA, El-Damhougy TK, Madani M. The energetic and physical concept of gold nanorod-dependent fluorescence in cancer treatment and development of new photonic compounds|review. RSC Adv 2023; 13:32223-32265. [PMID: 37928851 PMCID: PMC10620648 DOI: 10.1039/d3ra05487j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 10/10/2023] [Indexed: 11/07/2023] Open
Abstract
The optical features of gold nanorods (GNR) may be precisely controlled by manipulating their size, shape, and aspect ratio. This review explores the impact of these parameters on the optical tuning of (GNR). By altering the experimental conditions, like the addition of silver ions during the seed-mediated growth process, the aspect ratio of (GNR) may be regulated. The shape is trans from spherical to rod-like structures resulting in noticeable changes in the nanoparticles surface plasmons resonance (SPR) bands. The longitudinal SPR band, associated with electron oscillations along the long axis, exhibits a pronounced red shift into the (NIR) region as the aspect ratio increases. In contrast, the transverse SPR band remains relate unchanged. Using computational methods like the discrete dipole approximation (DDA) allows for analyzing absorption, scattering, and total extinction features of gold (G) nanoparticles. Studies have shown that increasing the aspect ratio enhances the scattering efficiency, indicating a higher scattering quantum yield (QY). These findings highlight the importance of size, shape, and aspect ratio in controlling the optical features of (GNR) providing valuable insights for various uses in nanophotonics and plasmonic-dependent fluorescence in cancer treatment and developing new photonic compound NRs.
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Affiliation(s)
- Dalal Mohamed Alshangiti
- College of Science and Humanities-Jubail, Imam Abdulrahman Bin Faisal University Jubail Saudi Arabia
| | - Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority P.O. Box 29, Nasr City Cairo Egypt
| | - Haifa A Alqahtani
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University Dammam 31441 Saudi Arabia
| | - Tasneam K El-Damhougy
- Department of Chemistry, Faculty of Science (Girls), Al-Azhar University P.O. Box 11754, Yousef Abbas Str., Nasr City Cairo Egypt
| | - Mohamed Madani
- College of Science and Humanities-Jubail, Imam Abdulrahman Bin Faisal University Jubail Saudi Arabia
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Álvarez-Córdoba M, Talaverón-Rey M, Povea-Cabello S, Cilleros-Holgado P, Gómez-Fernández D, Piñero-Pérez R, Reche-López D, Munuera-Cabeza M, Suárez-Carrillo A, Romero-González A, Romero-Domínguez JM, López-Cabrera A, Armengol JÁ, Sánchez-Alcázar JA. Patient-Derived Cellular Models for Polytarget Precision Medicine in Pantothenate Kinase-Associated Neurodegeneration. Pharmaceuticals (Basel) 2023; 16:1359. [PMID: 37895830 PMCID: PMC10609847 DOI: 10.3390/ph16101359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The term neurodegeneration with brain iron accumulation (NBIA) brings together a broad set of progressive and disabling neurological genetic disorders in which iron is deposited preferentially in certain areas of the brain. Among NBIA disorders, the most frequent subtype is pantothenate kinase-associated neurodegeneration (PKAN) caused by pathologic variants in the PANK2 gene codifying the enzyme pantothenate kinase 2 (PANK2). To date, there are no effective treatments to stop the progression of these diseases. This review discusses the utility of patient-derived cell models as a valuable tool for the identification of pharmacological or natural compounds for implementing polytarget precision medicine in PKAN. Recently, several studies have described that PKAN patient-derived fibroblasts present the main pathological features associated with the disease including intracellular iron overload. Interestingly, treatment of mutant cell cultures with various supplements such as pantothenate, pantethine, vitamin E, omega 3, α-lipoic acid L-carnitine or thiamine, improved all pathophysiological alterations in PKAN fibroblasts with residual expression of the PANK2 enzyme. The information provided by pharmacological screenings in patient-derived cellular models can help optimize therapeutic strategies in individual PKAN patients.
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Affiliation(s)
- Mónica Álvarez-Córdoba
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Marta Talaverón-Rey
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Suleva Povea-Cabello
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Paula Cilleros-Holgado
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - David Gómez-Fernández
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Rocío Piñero-Pérez
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Diana Reche-López
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Manuel Munuera-Cabeza
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Alejandra Suárez-Carrillo
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Ana Romero-González
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Jose Manuel Romero-Domínguez
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - Alejandra López-Cabrera
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
| | - José Ángel Armengol
- Department of Physiology, Anatomy and Cellular Biology, Pablo de Olavide University, 41013 Seville, Spain;
| | - José Antonio Sánchez-Alcázar
- Andalusian Centre for Developmental Biology (CABD-CSIC-Pablo de Olavide University), 41013 Seville, Spain; (M.Á.-C.); (M.T.-R.); (S.P.-C.); (P.C.-H.); (D.G.-F.); (R.P.-P.); (D.R.-L.); (M.M.-C.); (A.S.-C.); (A.R.-G.); (J.M.R.-D.); (A.L.-C.)
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Geng Y, Wang Z, Zhou J, Zhu M, Liu J, James TD. Recent progress in the development of fluorescent probes for imaging pathological oxidative stress. Chem Soc Rev 2023. [PMID: 37190785 DOI: 10.1039/d2cs00172a] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Oxidative stress is closely related to the physiopathology of numerous diseases. Reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS) are direct participants and important biomarkers of oxidative stress. A comprehensive understanding of their changes can help us evaluate disease pathogenesis and progression and facilitate early diagnosis and drug development. In recent years, fluorescent probes have been developed for real-time monitoring of ROS, RNS and RSS levels in vitro and in vivo. In this review, conventional design strategies of fluorescent probes for ROS, RNS, and RSS detection are discussed from three aspects: fluorophores, linkers, and recognition groups. We introduce representative fluorescent probes for ROS, RNS, and RSS detection in cells, physiological/pathological processes (e.g., Inflammation, Drug Induced Organ Injury and Ischemia/Reperfusion Injury etc.), and specific diseases (e.g., neurodegenerative diseases, epilepsy, depression, diabetes and cancer, etc.). We then highlight the achievements, current challenges, and prospects for fluorescent probes in the pathophysiology of oxidative stress-related diseases.
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Affiliation(s)
- Yujie Geng
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Zhuo Wang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Jiaying Zhou
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Mingguang Zhu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Jiang Liu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Tony D James
- Department of Chemistry, University of Bath, Bath BA2 7AY, UK.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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Rodella U, Honisch C, Gatto C, Ruzza P, D'Amato Tóthová J. Antioxidant Nutraceutical Strategies in the Prevention of Oxidative Stress Related Eye Diseases. Nutrients 2023; 15:nu15102283. [PMID: 37242167 DOI: 10.3390/nu15102283] [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: 04/14/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
This review aims to discuss the delicate balance between the physiological production of reactive oxygen species and the role of antioxidant nutraceutical molecules in managing radicals in the complex anatomical structure of the eye. Many molecules and enzymes with reducing and antioxidant potential are present in different parts of the eye. Some of these, such as glutathione, N-acetylcysteine, α-lipoic acid, coenzyme Q10, and enzymatic antioxidants, are endogenously produced by the body. Others, such as plant-derived polyphenols and carotenoids, vitamins B2, C, and E, zinc and selenium, and omega-3 polyunsaturated fatty acids, must be obtained through the diet and are considered essential nutrients. When the equilibrium between the production of reactive oxygen species and their scavenging is disrupted, radical generation overwhelms the endogenous antioxidant arsenal, leading to oxidative stress-related eye disorders and aging. Therefore, the roles of antioxidants contained in dietary supplements in preventing oxidative stress-based ocular dysfunctions are also discussed. However, the results of studies investigating the efficacy of antioxidant supplementation have been mixed or inconclusive, indicating a need for future research to highlight the potential of antioxidant molecules and to develop new preventive nutritional strategies.
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Affiliation(s)
- Umberto Rodella
- Fondazione Banca degli Occhi del Veneto Onlus (FBOV), 30174 Zelarino, Italy
- Research and Development, AL.CHI.MI.A. S.R.L., Viale Austria 14, 35020 Ponte San Nicoló, Italy
| | - Claudia Honisch
- Institute of Biomolecular Chemistry of CNR (ICB-CNR), Via F. Marzolo, 1, 35131 Padova, Italy
| | - Claudio Gatto
- Research and Development, AL.CHI.MI.A. S.R.L., Viale Austria 14, 35020 Ponte San Nicoló, Italy
| | - Paolo Ruzza
- Institute of Biomolecular Chemistry of CNR (ICB-CNR), Via F. Marzolo, 1, 35131 Padova, Italy
| | - Jana D'Amato Tóthová
- Research and Development, AL.CHI.MI.A. S.R.L., Viale Austria 14, 35020 Ponte San Nicoló, Italy
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Abdel-Megeed RM, Kadry MO. Amelioration of autophagy and inflammatory signaling pathways via α-lipoic acid, burdock and bee pollen versus lipopolysaccharide-induced insulin resistance in murine model. Heliyon 2023; 9:e15692. [PMID: 37139293 PMCID: PMC10149403 DOI: 10.1016/j.heliyon.2023.e15692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 05/05/2023] Open
Abstract
Lipopolysaccharide (LPS) has previously been implicated in insulin resistance by generating an innate immune response and activating inflammatory cascades. Many studies have discovered a relationship between high levels of serum LPS and the advancement of diabetic microvascular problems, indicating that LPS may play a role in the control of critical signaling pathways connected to insulin resistance. The current study focused on signaling pathways linked to insulin resistance and explored probable mechanisms of LPS-induced insulin resistance in a murine model. It next looked at the effects of burdock, bee pollen, and -lipoic acid on LPS-induced inflammation and autoimmune defects in rats. LPS intoxication was induced via ip injection for one week in a dose of 10 mg/kg followed by α-lipoic acid, Burdock and bee pollen in an oral treatment for one month. Following that, biochemical and molecular studies were performed. The RNA expression of the regulating genes STAT5A and PTEN was measured. In addition, ATF-4 and CHOP as autophagy biomarkers were also subjected to mRNA quantification. The results demonstrated a considerable improvement in the -lipoic acid, Burdock, and bee pollen treated groups via modifying oxidative stress indicators as well as molecular ones. Furthermore, glucose concentration in serum and α-amylase were also improved upon treatment with the superiority of α-lipoic acid for modulating all estimated parameters. In conclusion: the results declared in the current study suggested that α-lipoic acid could regulate insulin resistance signaling pathways induced by LPS intoxication.
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11
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Talaverón-Rey M, Álvarez-Córdoba M, Villalón-García I, Povea-Cabello S, Suárez-Rivero JM, Gómez-Fernández D, Romero-González A, Suárez-Carrillo A, Munuera-Cabeza M, Cilleros-Holgado P, Reche-López D, Piñero-Pérez R, Sánchez-Alcázar JA. Alpha-lipoic acid supplementation corrects pathological alterations in cellular models of pantothenate kinase-associated neurodegeneration with residual PANK2 expression levels. Orphanet J Rare Dis 2023; 18:80. [PMID: 37046296 PMCID: PMC10091671 DOI: 10.1186/s13023-023-02687-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 04/02/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND Neurodegeneration with brain iron accumulation (NBIA) disorders are a group of neurodegenerative diseases that have in common the accumulation of iron in the basal nuclei of the brain which are essential components of the extrapyramidal system. Frequent symptoms are progressive spasticity, dystonia, muscle rigidity, neuropsychiatric symptoms, and retinal degeneration or optic nerve atrophy. One of the most prevalent subtypes of NBIA is Pantothenate kinase-associated neurodegeneration (PKAN). It is caused by pathogenic variants in the gene of pantothenate kinase 2 (PANK2) which encodes the enzyme responsible for the first reaction on the coenzyme A (CoA) biosynthesis pathway. Thus, deficient PANK2 activity induces CoA deficiency as well as low expression levels of 4'-phosphopantetheinyl proteins which are essential for mitochondrial metabolism. METHODS This study is aimed at evaluating the role of alpha-lipoic acid (α-LA) in reversing the pathological alterations in fibroblasts and induced neurons derived from PKAN patients. Iron accumulation, lipid peroxidation, transcript and protein expression levels of PANK2, mitochondrial ACP (mtACP), 4''-phosphopantetheinyl and lipoylated proteins, as well as pyruvate dehydrogenase (PDH) and Complex I activity were examined. RESULTS Treatment with α-LA was able to correct all pathological alterations in responsive mutant fibroblasts with residual PANK2 enzyme expression. However, α-LA had no effect on mutant fibroblasts with truncated/incomplete protein expression. The positive effect of α-LA in particular pathogenic variants was also confirmed in induced neurons derived from mutant fibroblasts. CONCLUSIONS Our results suggest that α-LA treatment can increase the expression levels of PANK2 and reverse the mutant phenotype in PANK2 responsive pathogenic variants. The existence of residual enzyme expression in some affected individuals raises the possibility of treatment using high dose of α-LA.
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Affiliation(s)
- Marta Talaverón-Rey
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Mónica Álvarez-Córdoba
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Irene Villalón-García
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Suleva Povea-Cabello
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Juan M Suárez-Rivero
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - David Gómez-Fernández
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Ana Romero-González
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Alejandra Suárez-Carrillo
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Manuel Munuera-Cabeza
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Paula Cilleros-Holgado
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Diana Reche-López
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - Rocío Piñero-Pérez
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain
| | - José A Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD-CSIC-UPO), Universidad Pablo de Olavide, 41013, Seville, Spain.
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The effects of lipoic acid on respiratory diseases. Int Immunopharmacol 2023; 116. [PMCID: PMC9933494 DOI: 10.1016/j.intimp.2023.109713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Respiratory diseases, including lung cancer, pulmonary fibrosis, asthma, and the recently emerging fatal coronavirus disease-19 (COVID-19), are the leading causes of illness and death worldwide. The increasing incidence and mortality rates have attracted much attention to the prevention and treatment of these conditions. Lipoic acid (LA), a naturally occurring organosulfur compound, is not only essential for mitochondrial aerobic metabolism but also shows therapeutic potential via certain pharmacological effects (e.g., antioxidative and anti-inflammatory effects). In recent years, accumulating evidence (animal experiments and in vitro studies) has suggested a role of LA in ameliorating many respiratory diseases (e.g., lung cancer, fibrosis, asthma, acute lung injury and smoking-induced lung injury). Therefore, this review will provide an overview of the present investigational evidence on the therapeutic effect of LA against respiratory diseases in vitro and in vivo. We also summarize the corresponding mechanisms of action to inspire further basic studies and clinical trials to confirm the health benefits of LA in the context of respiratory diseases.
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Key Words
- lipoic acid
- respiratory diseases
- antioxidation
- anti-inflammatory effects
- mechanism of action
- akt, protein kinase b;
- aif, apoptosis-inducing factor;
- ampk, adenosine monophosphate-activated protein kinase;
- α-sma, alpha-smooth muscle actin;
- bcl-2, b-cell lymphoma 2;
- cox-2, cyclooxygenase-2;
- dna, deoxyribonucleic acid;
- er, endoplasmic reticulum;
- erk, extracellular-regulated kinase;
- egfr, epidermal growth factor receptor;
- gr, glutathione reductase;
- gpx, glutathione peroxidase;
- grb2, growth factor receptor-bound protein 2;
- gsh, reduced glutathione;
- gssg, oxidized glutathione;
- hif, hypoxia-inducible factor;
- ho-1, heme oxygenase 1;
- keap-1, kelch-like ech-associated protein 1;
- ig-e, immunoglobulin e;
- il, interleukin
- oct-4, octamer-binding transcription factor 4;
- parp-1, poly (adp-ribose) polymerase-1;
- pdk1, phosphoinositide-dependent kinase-1;
- pdh, pyruvate dehydrogenase;
- pi3k, phosphoinositide 3-kinase;
- pge2, prostaglandin e2;
- pgc1α, peroxisome proliferator-activated receptor‑γ co-activator 1α;
- p70s6k, p70 ribosomal protein s6 kinase;
- fak, focal adhesion kinase;
- sod, superoxide dismutase;
- mapk, mitogen-activated protein kinase;
- mtor, mammalian target of rapamycin;
- nf-κb, nuclear factor-kappa b;
- no, nitric oxide;
- nox-4, nicotinamide adenine dinucleotide phosphate (nadph) oxidase-4;
- nqo1, nadph quinone oxidoreductase 1;
- tnf-α, tumor necrosis factor-α;
- tgf-β1, transforming growth factor beta-1;
- vegf, vascular endothelial growth factor;
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Lv SY, He S, Ling XL, Wang YQ, Huang C, Long JR, Wang JQ, Qin Y, Wei H, Yu CY. Review of lipoic acid: From a clinical therapeutic agent to various emerging biomaterials. Int J Pharm 2022; 627:122201. [PMID: 36115465 DOI: 10.1016/j.ijpharm.2022.122201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/20/2022] [Accepted: 09/09/2022] [Indexed: 01/25/2023]
Abstract
Lipoic acid (LA), an endogenous small molecule in organisms, has been extensively used for the highly efficient clinical treatment of malignant diseases, which include diabetes, Alzheimer's disease, and cancer over the past seven decades. Tremendous progresses have been made on the use of LA in nanomedicine for the development of various biomaterials because of its unique biological properties and highly adaptable structure since the first discovery. However, there are few reviews thus far, to our knowledge, summarizing this hot subject of research of LA and its derived biomaterials. For this purpose, we present herein the first comprehensive summary on the design and development of LA and its derived materials for biomedical applications. This review first discusses the therapeutic use of LA followed by the description of synthesis and preclinical study of LA-derived-small molecules. The applications of various LA and poly (lipoic acid) (PLA)-derived-biomaterials are next summarized in detail with an emphasis on the use of LA for the design of biomaterials and the diverse properties. This review describes the development of LA from a clinical therapeutic agent to a building unit of various biomaterials field, which will promote the further discovery of new therapeutic uses of LA as therapeutic agents and facile development of LA-based derivates with greater performance for biomedical applications.
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Affiliation(s)
- Shao-Yang Lv
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Suisui He
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xiao-Li Ling
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Yue-Qin Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Cong Huang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Jin-Rong Long
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Jia-Qi Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Yang Qin
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Hua Wei
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Cui-Yun Yu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy & Pharmacology, School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang 421001, China.
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Pravda J. Evidence-based pathogenesis and treatment of ulcerative colitis: A causal role for colonic epithelial hydrogen peroxide. World J Gastroenterol 2022; 28:4263-4298. [PMID: 36159014 PMCID: PMC9453768 DOI: 10.3748/wjg.v28.i31.4263] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/19/2022] [Accepted: 07/22/2022] [Indexed: 02/06/2023] Open
Abstract
In this comprehensive evidence-based analysis of ulcerative colitis (UC), a causal role is identified for colonic epithelial hydrogen peroxide (H2O2) in both the pathogenesis and relapse of this debilitating inflammatory bowel disease. Studies have shown that H2O2 production is significantly increased in the non-inflamed colonic epithelium of individuals with UC. H2O2 is a powerful neutrophilic chemotactic agent that can diffuse through colonic epithelial cell membranes creating an interstitial chemotactic molecular “trail” that attracts adjacent intravascular neutrophils into the colonic epithelium leading to mucosal inflammation and UC. A novel therapy aimed at removing the inappropriate H2O2 mediated chemotactic signal has been highly effective in achieving complete histologic resolution of colitis in patients experiencing refractory disease with at least one (biopsy-proven) histologic remission lasting 14 years to date. The evidence implies that therapeutic intervention to prevent the re-establishment of a pathologic H2O2 mediated chemotactic signaling gradient will indefinitely preclude neutrophilic migration into the colonic epithelium constituting a functional cure for this disease. Cumulative data indicate that individuals with UC have normal immune systems and current treatment guidelines calling for the suppression of the immune response based on the belief that UC is caused by an underlying immune dysfunction are not supported by the evidence and may cause serious adverse effects. It is the aim of this paper to present experimental and clinical evidence that identifies H2O2 produced by the colonic epithelium as the causal agent in the pathogenesis of UC. A detailed explanation of a novel therapeutic intervention to normalize colonic H2O2, its rationale, components, and formulation is also provided.
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Affiliation(s)
- Jay Pravda
- Disease Pathogenesis, Inflammatory Disease Research Centre, Palm Beach Gardens, FL 33410, United States
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Lee Y, Lim JW, Kim H. α‑lipoic acid inhibits cerulein/resistin‑induced expression of interleukin‑6 by activating peroxisome proliferator‑activated receptor‑γ in pancreatic acinar cells. Mol Med Rep 2022; 26:264. [PMID: 35730599 PMCID: PMC9260878 DOI: 10.3892/mmr.2022.12780] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/09/2022] [Indexed: 11/06/2022] Open
Abstract
Cerulein‑induced pancreatitis resembles human acute pancreatitis in terms of pathological events, such as enzymatic activation and inflammatory cell infiltration in the pancreas. Cerulein is a cholecystokinin analog that increases levels of reactive oxygen species (ROS) and interleukin‑6 (IL‑6) expression level in pancreatic acinar cells. Serum levels of resistin, which is secreted from adipocytes, are reportedly higher in patients with acute pancreatitis than in healthy individuals. Previously, it was shown that the adipokine resistin can aggravate the cerulein‑induced increase in ROS levels and IL‑6 expression level in pancreatic acinar cells. Peroxisome proliferator‑activated receptor‑gamma (PPAR‑γ) is a key regulator of the transcription and expression of antioxidant enzymes, including heme oxygenase 1 (HO‑1) and catalase. α‑lipoic acid, a naturally occurring dithiol antioxidant, can prevent cerulein‑induced pancreatic damage in rats. In the present study, it was aimed to investigate whether α‑lipoic acid can attenuate the cerulein/resistin‑induced increase in IL‑6 expression and ROS levels via PPAR‑γ activation in pancreatic acinar AR42J cells. The anti‑inflammatory mechanism of α‑lipoic acid was determined using reverse transcription‑quantitative PCR, western blot analysis, enzyme‑linked immunosorbent assay, immunofluorescence staining and fluorometry. Treatment with cerulein and resistin increased ROS levels and IL‑6 expression level, which were inhibited by α‑lipoic acid in pancreatic acinar cells. α‑lipoic acid increased the nuclear translocation and expression level of PPAR‑γ and the expression levels of its target genes: HO‑1 and catalase. The PPAR‑γ antagonist GW9662 and HO‑1 inhibitor zinc protoporphyrin reversed the inhibitory effect of α‑lipoic acid on cerulein/resistin‑induced increase in ROS and IL‑6 levels. In conclusion, α‑lipoic acid inhibits the cerulein/resistin‑induced increase in ROS production and IL‑6 expression levels by activating PPAR‑γ and inducing the expression of HO‑1 and catalase in pancreatic acinar cells.
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Affiliation(s)
- Yujin Lee
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
| | - Joo Weon Lim
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyeyoung Kim
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
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16
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Dolinina ES, Parfenyuk EV. Silica Hydrogels as a Basis of Novel Soft Dosage Forms and Cosmetic Compositions. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622030068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Effect of Alpha-Lipoic Acid on Rat Ventricles and Atria under LPS-Induced Oxidative Stress. Antioxidants (Basel) 2022; 11:antiox11040734. [PMID: 35453419 PMCID: PMC9024801 DOI: 10.3390/antiox11040734] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/02/2022] [Accepted: 04/06/2022] [Indexed: 02/01/2023] Open
Abstract
Alpha-lipoic acid (α-LA) is a disulfide compound and one of the most effective antioxidants. Many studies have indicated positive effects of α-LA in the prevention of pathologic conditions mediated by oxidative stress, such as cardiovascular diseases. However, the therapeutic potential of α-LA for the heart has not been explored with regards to the ventricles and atria. The aim of our study was to evaluate the effects of α-LA on oxidative stress parameters and inflammation in the ventricles and atria of the heart in rats under LPS-induced oxidative stress. Wistar rats were divided into 4 groups: I—control (received 2 doses of 0.2 mL of 0.9% NaCl i.v., 0.5 h apart); II—α-LA (received 0.2 mL of 0.9% NaCl and 0.5 h later received α-LA 60 mg/kg b.w. i.v.); III—lipopolysaccharide (LPS) (received 0.2 mL of 0.9% NaCl and 0.5 h later received LPS 30 mg/kg b.w. i.v.); and IV—LPS + LA (received LPS 30 mg/kg b.w. i.v. and 0.5 h later received α-LA 60 mg/kg b.w. i.v.). Five hours later, the rats were euthanized. The hearts were surgically removed and weighed to estimate heart edema. The ventricular and atrium tissue was isolated to measure levels of TNF-α, IL-6, superoxide dismutase (SOD), thiobarbituric acid reactive substances (TBARS), hydrogen peroxide (H2O2), total sulfhydryl groups (-SH), total glutathione (tGSH), reduced glutathione (GSH), glutathione disulfide (GSSG), and the GSH/GSSG ratio. LPS significantly increased TNF-α, IL-6, TBARS, and H2O2 levels and decreased SOD, -SH groups, tGSH, the GSH/GSSG ratio, and GSH levels in rat ventricles and atria while α-LA administered after the injection of LPS significantly decreased TNF-α, IL-6, TBARS, and H2O2 levels. α-LA also increased SOD and -SH group levels and ameliorated the glutathione redox status when compared to the LPS group. Our data suggest that α-LA administration 30 min after LPS infusion may effectively prevent inflammation and oxidative stress in the ventricles and atria.
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Sindhu RK, Kaur P, Kaur P, Singh H, Batiha GES, Verma I. Exploring multifunctional antioxidants as potential agents for management of neurological disorders. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:24458-24477. [PMID: 35064486 DOI: 10.1007/s11356-021-17667-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 11/17/2021] [Indexed: 06/14/2023]
Abstract
Free radical or oxidative stress may be a fundamental mechanism underlying several human neurologic diseases. Therapy using free radical scavengers (antioxidants) has the potential to prevent, delay, or ameliorate many neurologic disorders. However, the biochemistry of oxidative pathobiology is complex, and optimum antioxidant therapeutic options may vary and need to be tailored to individual diseases. In vitro and animal model studies support the potential beneficial role of various antioxidant compounds in neurological disease. Antioxidants generally play an important role in reducing or preventing the cell damage and other changes which occur in the cells like mitochondrial dysfunction, DNA mutations, and lipid peroxidation in the cell membrane. Based on their mechanism of action, antioxidants can be used to treat various neurological disorders like Huntington's disease, Alzheimer's disease, and Parkinson's disease. Vitamin E has a scavenging action for reactive oxygen species (ROS) and also prevents the lipid peroxidation. Creatine generally reduces the mitochondrial dysfunction in Parkinson's disease (PD) patients. Various metal chelators are used in PD for the prevention of accumulation of the metals. Superoxidase dismutase (SOD), lipases, and proteases act as repair enzymes in patients with AD. Accordingly, the antioxidant defense system is found to be most useful for treating various neurological disorders.
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Affiliation(s)
- Rakesh K Sindhu
- Chitkara College of Pharmacy, Chitkara University, Punjab, 140401, India.
| | - Prabhjot Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, 140401, India
| | - Parneet Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, 140401, India
| | - Harmanpreet Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, 140401, India
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt
| | - Inderjeet Verma
- Department of Pharmacy Practice, M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, India
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Antioxidants Supplementation Reduces Ceramide Synthesis Improving the Cardiac Insulin Transduction Pathway in a Rodent Model of Obesity. Nutrients 2021; 13:nu13103413. [PMID: 34684414 PMCID: PMC8541644 DOI: 10.3390/nu13103413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 01/10/2023] Open
Abstract
Obesity-related disruption in lipid metabolism contributes to cardiovascular dysfunction. Despite numerous studies on lipid metabolism in the left ventricle, there is no data describing the influence of n-acetylcysteine (NAC) and α-lipoic acid (ALA), as glutathione precursors, on sphingolipid metabolism, and insulin resistance (IR) occurrence. The aim of our experiment was to evaluate the influence of chronic antioxidants administration on myocardial sphingolipid state and intracellular insulin signaling as a potential therapeutic strategy for obesity-related cardiovascular IR. The experiment was conducted on male Wistar rats fed a standard rodent chow or a high-fat diet with intragastric administration of NAC or ALA for eight weeks. Cardiac and plasma sphingolipid species were assessed by high-performance liquid chromatography (HPLC). The proteins expressed from sphingolipid and insulin signaling pathways were determined by Western blot. Antioxidant supplementation markedly reduced ceramide accumulation by lowering the expression of selected proteins from the sphingolipid pathway and simultaneously increased the myocardial sphingosine-1-phosphate level. Moreover, NAC and ALA augmented the expression of GLUT4 and the phosphorylation state of Akt (Ser473) and GSK3β (Ser9), which improved the intracellular insulin transduction pathway. Based on our results, we may postulate that NAC and ALA have a beneficial influence on the cardiac ceramidose under IR conditions.
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Petca A, Bot M, Maru N, Calo IG, Borislavschi A, Dumitrascu MC, Petca RC, Sandru F, Zvanca ME. Benefits of α-lipoic acid in high-risk pregnancies (Review). Exp Ther Med 2021; 22:1232. [PMID: 34539828 DOI: 10.3892/etm.2021.10666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 06/15/2021] [Indexed: 12/27/2022] Open
Abstract
α-Lipoic acid (ALA) is a natural molecule that is inconsistently synthesized by the human body and must be provided from exogenous sources, such as food and dietary supplements. Once absorbed, the oxidized form of ALA is transformed into its reduced form, dihydrolipoic acid (DHLA). ALA/DHLA exert direct and indirect antioxidant, anti-inflammatory and fine immunomodulatory effects. ALA/DHLA reduce the levels of pro-inflammatory cytokines (IL-1β, IL-6, IL-8 and IL-17), while increasing the secretion of anti-inflammatory cytokines (IL-10). They also inhibit cyclooxygenase 2, thereby decreasing the secretion of prostaglandin E2 and nitrogen oxide, and reducing the risk of miscarriage in the first trimester of pregnancy. In patients at risk of abortion, administration of ALA from the first trimester has shown efficacy by accelerating subchorionic hematoma resorption, with a significant decrease in the accompanying abdominal pain. ALA has been proven to be efficient in maintaining the length of the cervix and keeping it closed following one episode of premature labor. Preeclampsia is a dysfunction caused by abnormal placentation and an excessive maternal inflammatory response, leading to extreme hypoxia in the placental bed and exaggerated oxidative stress, with release of oxygen free radicals. Oxidative stress plays a key role in the development of preeclampsia and intrauterine growth restriction. The hypothesis of antioxidant supplementation may play an essential part in disease prevention and fetal neuroprotection.
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Affiliation(s)
- Aida Petca
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, Elias Emergency University Hospital, 011461 Bucharest, Romania
| | - Mihaela Bot
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, Elias Emergency University Hospital, 011461 Bucharest, Romania
| | - Nicoleta Maru
- Department of Anatomy, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Ioana Gabriela Calo
- Department of Obstetrics and Gynecology, Elias Emergency University Hospital, 011461 Bucharest, Romania
| | - Andreea Borislavschi
- Department of Obstetrics and Gynecology, Elias Emergency University Hospital, 011461 Bucharest, Romania
| | - Mihai Cristian Dumitrascu
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, University Emergency Hospital, 050098 Bucharest, Romania
| | - Razvan-Cosmin Petca
- Department of Urology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Urology, 'Prof. Dr. Th. Burghele' Clinical Hospital, 050659 Bucharest, Romania
| | - Florica Sandru
- Department of Dermatology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Dermatology, Elias Emergency University Hospital, 011461 Bucharest, Romania
| | - Mona Elena Zvanca
- Department of Obstetrics and Gynecology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Department of Obstetrics and Gynecology, Elias Emergency University Hospital, 011461 Bucharest, Romania
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Shchelkonogov VA, Inshakova AM, Shipelova AV, Baranova OA, Chekanov AV, Shastina NS, Solov'eva EY, Fedin AI. Nanoparticles of lipoic acid esters: preparation and antioxidant effect. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Martinelli I, Tomassoni D, Roy P, Di Cesare Mannelli L, Amenta F, Tayebati SK. Antioxidant Properties of Alpha-Lipoic (Thioctic) Acid Treatment on Renal and Heart Parenchyma in a Rat Model of Hypertension. Antioxidants (Basel) 2021; 10:antiox10071006. [PMID: 34201726 PMCID: PMC8300705 DOI: 10.3390/antiox10071006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 01/01/2023] Open
Abstract
Renal and cardiac impairments are frequent events in the presence of hypertension. Organ damage is mainly linked to oxidative stress due to high blood pressure and may be reduced by antioxidant supplementation. Alpha-lipoic acid (ALA) is one of most effective antioxidants. It is widely used as a nutritional supplement in a racemic mixture (+/–), even though the (+)-enantiomer is biologically active. This study was designed to investigate the effect of treatment with (+/–)-ALA and its enantiomers on renal and heart parenchyma in spontaneously hypertensive rats (SHR), using immunochemical and immunohistochemical techniques. The results confirmed that the oxidative mechanisms of organ alterations, due to hypertension, and characterized by glomerular and tubular lesions, left ventricular hypertrophy, and fibrosis but not by apoptosis were accompanied by proteins’ and nucleic acids’ oxidation. We found greater effectiveness of (+)-ALA compared to (+/−)-ALA in reducing oxidative stress, cardiac and renal damages in SHR. To conclude, these data propose (+)-ALA as one of the more appropriate antioxidant molecules to prevent renal and cardiac alterations associated with hypertension.
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Affiliation(s)
- Ilenia Martinelli
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (I.M.); (F.A.)
| | - Daniele Tomassoni
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (D.T.); (P.R.)
| | - Proshanta Roy
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (D.T.); (P.R.)
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Pharmaceutical and Child Health Area (NEUROFARBA), University of Florence, 50139 Florence, Italy;
| | - Francesco Amenta
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (I.M.); (F.A.)
| | - Seyed Khosrow Tayebati
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (I.M.); (F.A.)
- Correspondence:
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23
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Abdelrahman KA, Ibrahim AS, Osman AM, Aly MG, Ali AS, Farrag WS. Alpha lipoic acid with pulsed radiofrequency in treatment of chronic lumbosacral radicular pain: A prospective, randomized study. Medicine (Baltimore) 2021; 100:e26344. [PMID: 34128884 PMCID: PMC8213315 DOI: 10.1097/md.0000000000026344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 05/28/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The effect of adding alpha lipoic acid (ALA) to pulsed radiofrequency (PRF) for treatment of lumbar-sacral pain was evaluated. OBJECTIVE to evaluate the effect of using ALA as an adjuvant therapy with PRF for treatment of chronic lumbosacral radicular pain caused by herniated disc. METHODS One hundred twenty patients with lumbo-sacral radicular pain allocated into 2 groups. Group I: treated with PRF at 42°C for 120 seconds. Group II: treated as in group I, plus oral ALA 600 mg (Thiotacid 600 mg, EVA PHARMA, Egypt) three times per day (1800 mg/day) for 3 weeks then 600 mg once daily for 2 weeks. The lumbo-sacral radicular pain evaluated using the numerical rating pain score and Oswestry Disability Index. RESULTS Success rate was significantly higher in group II at 3 and 6 months after intervention. The median values of the numerical rating pain score and the Oswestry Disability Index were significantly lower in group II with no significant difference in Epworth Sleepiness Scale. No major complications were reported in both groups. CONCLUSION The current study supports the use of ALA with PRF on the dorsal root ganglion for treating lumbosacral radicular pain.
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Roy P, Tomassoni D, Traini E, Martinelli I, Micioni Di Bonaventura MV, Cifani C, Amenta F, Tayebati SK. Natural Antioxidant Application on Fat Accumulation: Preclinical Evidence. Antioxidants (Basel) 2021; 10:antiox10060858. [PMID: 34071903 PMCID: PMC8227384 DOI: 10.3390/antiox10060858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/24/2022] Open
Abstract
Obesity represents one of the most important challenges in the contemporary world that must be overcome. Different pathological consequences of these physical conditions have been studied for more than 30 years. The most nagging effects were found early in the cardiovascular system. However, later, its negative impact was also investigated in several other organs. Damage at cellular structures due to overexpression of reactive oxygen species together with mechanisms that cause under-production of antioxidants leads to the development of obesity-related complications. In this view, the negative results of oxidant molecules due to obesity were studied in various districts of the body. In the last ten years, scientific literature has reported reasonable evidence regarding natural and synthetic compounds' supplementation, which showed benefits in reducing oxidative stress and inflammatory processes in animal models of obesity. This article attempts to clarify the role of oxidative stress due to obesity and the opposing role of antioxidants to counter it, reported in preclinical studies. This analysis aims to clear-up different mechanisms that lead to the build-up of pro-oxidants during obesity and how various molecules of different origins hinder this phenomenon, behaving as antioxidants.
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Affiliation(s)
- Proshanta Roy
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (P.R.); (D.T.)
| | - Daniele Tomassoni
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (P.R.); (D.T.)
| | - Enea Traini
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (E.T.); (I.M.); (M.V.M.D.B.); (C.C.); (F.A.)
| | - Ilenia Martinelli
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (E.T.); (I.M.); (M.V.M.D.B.); (C.C.); (F.A.)
| | | | - Carlo Cifani
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (E.T.); (I.M.); (M.V.M.D.B.); (C.C.); (F.A.)
| | - Francesco Amenta
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (E.T.); (I.M.); (M.V.M.D.B.); (C.C.); (F.A.)
| | - Seyed Khosrow Tayebati
- School of Pharmacy, University of Camerino, 62032 Camerino, Italy; (E.T.); (I.M.); (M.V.M.D.B.); (C.C.); (F.A.)
- Correspondence:
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Anthony RM, MacLeay JM, Gross KL. Alpha-Lipoic Acid as a Nutritive Supplement for Humans and Animals: An Overview of Its Use in Dog Food. Animals (Basel) 2021; 11:ani11051454. [PMID: 34069383 PMCID: PMC8158713 DOI: 10.3390/ani11051454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary A review of human and animal studies involving alpha-lipoic acid supplementation was conducted to determine the utility of alpha-lipoic acid in dog food. The present literature shows that alpha-lipoic acid has utility as a nutritive additive at concentrations of 2.7–4.94 mg/kg body weight/day and improves antioxidant capacity in dogs. Abstract Alpha-lipoic acid (a-LA) is used as a nutritive additive in dog food. Therefore, we performed a systematic review of studies published to date in PubMed, Google Scholar, Cochrane Library and MedlinePlus involving alpha-lipoic acid supplementation, which included human clinical trials as well as animal studies, to evaluate its utility as a supplement in foods for healthy, adult dogs. While an upper limit of alpha-lipoic acid intake in humans has not been conclusively determined, the levels for oral intake of a-LA have been better defined in animals, and distinct differences based on species have been described. The maximum tolerated oral dose of a-LA in dogs has been reported as 126 mg/kg body weight and the LD50 as 400 to 500 mg/kg body weight. The antioxidant, anti-inflammatory and neuro-protective benefits of alpha-lipoic acid in dogs were observed at concentrations much lower than the maximum tolerated dose or proposed LD50. At concentrations of 2.7–4.94 mg/kg body weight/day, alpha-lipoic acid is well tolerated and posed no health risks to dogs while providing improved antioxidant capacity. This review thereby supports the utility of alpha-lipoic acid as an effective nutritive additive in dog food.
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Banik S, Halder S, Sato H, Onoue S. Self-emulsifying drug delivery system of (R)-α-lipoic acid to improve its stability and oral absorption. Biopharm Drug Dispos 2021; 42:226-233. [PMID: 33843079 DOI: 10.1002/bdd.2277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/02/2021] [Accepted: 03/04/2021] [Indexed: 02/03/2023]
Abstract
The present study was designed to develop a self-emulsifying drug delivery system (SEDDS) of (R)-α-lipoic acid (RLA) to improve the physicochemical and nutraceutical properties of RLA. RLA/SEDDS was prepared using medium-chain triglycerides, Tween 80, and polyethylene glycol 400 as oil, surfactant, and co-surfactant, respectively. The preferable composition of SEDDS was selected according to a pseudo-ternary phase diagram for improved emulsification properties, and its physicochemical and pharmacokinetic properties were evaluated. RLA/SEDDS showed the immediate formation of fine micelles with a mean droplet size of approximately 260 nm when introduced into aqueous media. In simulated gastric fluid, this system could significantly improve the dissolution behavior of RLA and prevent the degradation of RLA, possibly due to the encapsulation of RLA into the emulsion structure. Following the oral administration of RLA/SEDDS (10 mg RLA/kg) in rats, systemic exposure to RLA and dihydrolipoic acid (DHLA), a reduced form of RLA, increased by 7- and 3-fold, respectively. The improved dissolution and gastric stability of RLA could contribute to enhancing systemic exposure to RLA and DHLA after oral administration. From these findings, RLA/SEDDS might be an efficacious dosage option for improving the oral bioavailability as well as nutraceutical properties of RLA.
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Affiliation(s)
- Sujan Banik
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Shimul Halder
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Hideyuki Sato
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
| | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Japan
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Zaheer A, Zaheer F, Saeed H, Tahir Z, Tahir MW. A Review of Alternative Treatment Options in Diabetic Polyneuropathy. Cureus 2021; 13:e14600. [PMID: 34040901 PMCID: PMC8139599 DOI: 10.7759/cureus.14600] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2021] [Indexed: 11/05/2022] Open
Abstract
Currently there is no recognized curative treatment for diabetic polyneuropathy (DPN). Strict glucose control and symptomatic pain relief are the first line management routes. DPN is a common complication of diabetes and has a major detrimental influence on the quality of life (QOL) for many patients. Due to the scope of the problem, it is imperative that treatment options which impede DPN's progression and restore sensorineural function should be researched comprehensively and made available to the masses at an economical cost. We reviewed a multitude of atypical treatment options for DPN including capsaicin, lidocaine, acupuncture, electrical nerve stimulation, alpha lipoic acid, benfotiamine, and acetyl-l-carnitine and explored the evidence to date regarding their safety and efficacy. Most of these options have been around for a long time and have promising pilot studies or small-scale trials focused on DPN treatment.
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Affiliation(s)
| | - Faizan Zaheer
- Medicine, Fatima Memorial Hospital College of Medicine and Dentistry, Lahore, PAK
| | | | - Zoya Tahir
- Pathology, Shaikh Zayed Hospital, Lahore, PAK
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Shchelkonogov VA, Darnotuk ES, Chekanov AV, Baranova OA, Kazarinov KD, Shastina NS, Stvolinsky SL, Fedorova TN, Solov’eva EY, Fedin AI, Sorokoumova GM. Liposomal Drug with Carnosine and Lipoic Acid: Preparation, Antioxidant and Antiplatelet Properties. Biophysics (Nagoya-shi) 2021. [DOI: 10.1134/s0006350921020214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Hossain KFB, Akter M, Rahman MM, Sikder MT, Rahaman MS, Yamasaki S, Kimura G, Tomihara T, Kurasaki M, Saito T. Amelioration of Metal-Induced Cellular Stress by α-Lipoic Acid and Dihydrolipoic Acid through Antioxidative Effects in PC12 Cells and Caco-2 Cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18042126. [PMID: 33671655 PMCID: PMC7926869 DOI: 10.3390/ijerph18042126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/13/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022]
Abstract
α-Lipoic acid (ALA) and its reduced form dihydrolipoic acid (DHLA) are endogenous dithiol compounds with significant antioxidant properties, both of which have the potential to detoxify cells. In this study, ALA (250 μM) and DHLA (50 μM) were applied to reduce metal (As, Cd, and Pb)-induced toxicity in PC12 and Caco-2 cells as simultaneous exposure. Both significantly decreased Cd (5 μM)-, As (5 μM)-, and Pb (5 μM)-induced cell death. Subsequently, both ALA and DHLA restored cell membrane integrity and intracellular glutathione (GSH) levels, which were affected by metal-induced toxicity. In addition, DHLA protected PC12 cells from metal-induced DNA damage upon co-exposure to metals. Furthermore, ALA and DHLA upregulated the expression of survival-related proteins mTOR (mammalian target of rapamycin), Akt (protein kinase B), and Nrf2 (nuclear factor erythroid 2-related factor 2) in PC12 cells, which were previously downregulated by metal exposure. In contrast, in Caco-2 cells, upon co-exposure to metals and ALA, Nrf2 was upregulated and cleaved PARP-1 (poly (ADP-ribose) polymerase-1) was downregulated. These findings suggest that ALA and DHLA can counterbalance the toxic effects of metals. The protection of ALA or DHLA against metal toxicity may be largely due to an enhancement of antioxidant defense along with reduced glutathione level, which ultimately reduces the cellular oxidative stress.
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Affiliation(s)
- Kaniz Fatima Binte Hossain
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan; (K.F.B.H.); (M.A.); (M.S.R.); (M.K.)
| | - Mahmuda Akter
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan; (K.F.B.H.); (M.A.); (M.S.R.); (M.K.)
| | - Md. Mostafizur Rahman
- Department of Environmental Sciences, Jahangirnagar University, Savar 1342, Bangladesh
- Correspondence: (M.M.R.); (M.T.S.); Tel.: +88-02-7791045-51 (M.M.R. & M.T.S.); Fax: +88-02-7791052 (M.M.R. & M.T.S.)
| | - Md. Tajuddin Sikder
- Department of Public Health and Informatics, Jahangirnagar University, Savar 1342, Bangladesh
- Correspondence: (M.M.R.); (M.T.S.); Tel.: +88-02-7791045-51 (M.M.R. & M.T.S.); Fax: +88-02-7791052 (M.M.R. & M.T.S.)
| | - Md. Shiblur Rahaman
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan; (K.F.B.H.); (M.A.); (M.S.R.); (M.K.)
| | - Shojiro Yamasaki
- Faculty of Health Sciences, Hokkaido University, Sapporo 060-0810, Japan; (S.Y.); (G.K.); (T.T.); (T.S.)
| | - Goh Kimura
- Faculty of Health Sciences, Hokkaido University, Sapporo 060-0810, Japan; (S.Y.); (G.K.); (T.T.); (T.S.)
| | - Tomomi Tomihara
- Faculty of Health Sciences, Hokkaido University, Sapporo 060-0810, Japan; (S.Y.); (G.K.); (T.T.); (T.S.)
| | - Masaaki Kurasaki
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan; (K.F.B.H.); (M.A.); (M.S.R.); (M.K.)
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Takeshi Saito
- Faculty of Health Sciences, Hokkaido University, Sapporo 060-0810, Japan; (S.Y.); (G.K.); (T.T.); (T.S.)
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Kim K, Kim J, Kim H, Sung GY. Effect of α-Lipoic Acid on the Development of Human Skin Equivalents Using a Pumpless Skin-on-a-Chip Model. Int J Mol Sci 2021; 22:2160. [PMID: 33671528 PMCID: PMC7927099 DOI: 10.3390/ijms22042160] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 11/16/2022] Open
Abstract
Owing to the prohibition of cosmetic animal testing, various attempts have recently been made using skin-on-a-chip (SOC) technology as a replacement for animal testing. Previously, we reported the development of a pumpless SOC capable of drug testing with a simple drive using the principle that the medium flows along the channel by gravity when the chip is tilted using a microfluidic channel. In this study, using pumpless SOC, instead of drug testing at the single-cell level, we evaluated the efficacy of α-lipoic acid (ALA), which is known as an anti-aging substance in skin equivalents, for skin tissue and epidermal structure formation. The expression of proteins and changes in genotyping were compared and evaluated. Hematoxylin and eosin staining for histological analysis showed a difference in the activity of fibroblasts in the dermis layer with respect to the presence or absence of ALA. We observed that the epidermis layer became increasingly prominent as the culture period was extended by treatment with 10 μM ALA. The expression of epidermal structural proteins of filaggrin, involucrin, keratin 10, and collagen IV increased because of the effect of ALA. Changes in the epidermis layer were noticeable after the ALA treatment. As a result of aging, damage to the skin-barrier function and structural integrity is reduced, indicating that ALA has an anti-aging effect. We performed a gene analysis of filaggrin, involucrin, keratin 10, integrin, and collagen I genes in ALA-treated human skin equivalents, which indicated an increase in filaggrin gene expression after ALA treatment. These results indicate that pumpless SOC can be used as an in vitro skin model similar to human skin, protein and gene expression can be analyzed, and it can be used for functional drug tests of cosmetic materials in the future. This technology is expected to contribute to the development of skin disease models.
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Affiliation(s)
- Kyunghee Kim
- Interdisciplinary Program of Nano-Medical Device Engineering, Graduate School, Hallym University, Chuncheon 24252, Korea; (K.K.); (J.K.); (H.K.)
- Integrative Materials Research Institute, Hallym University, Chuncheon 24252, Korea
| | - Jisue Kim
- Interdisciplinary Program of Nano-Medical Device Engineering, Graduate School, Hallym University, Chuncheon 24252, Korea; (K.K.); (J.K.); (H.K.)
- Integrative Materials Research Institute, Hallym University, Chuncheon 24252, Korea
| | - Hyoungseob Kim
- Interdisciplinary Program of Nano-Medical Device Engineering, Graduate School, Hallym University, Chuncheon 24252, Korea; (K.K.); (J.K.); (H.K.)
- Integrative Materials Research Institute, Hallym University, Chuncheon 24252, Korea
| | - Gun Yong Sung
- Interdisciplinary Program of Nano-Medical Device Engineering, Graduate School, Hallym University, Chuncheon 24252, Korea; (K.K.); (J.K.); (H.K.)
- Integrative Materials Research Institute, Hallym University, Chuncheon 24252, Korea
- Major in Materials Science and Engineering, School of Future Convergence, Hallym University, Chuncheon 24252, Korea
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Natural Molecules and Neuroprotection: Kynurenic Acid, Pantethine and α-Lipoic Acid. Int J Mol Sci 2021; 22:ijms22010403. [PMID: 33401674 PMCID: PMC7795784 DOI: 10.3390/ijms22010403] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/19/2020] [Accepted: 12/29/2020] [Indexed: 02/06/2023] Open
Abstract
The incidence of neurodegenerative diseases has increased greatly worldwide due to the rise in life expectancy. In spite of notable development in the understanding of these disorders, there has been limited success in the development of neuroprotective agents that can slow the progression of the disease and prevent neuronal death. Some natural products and molecules are very promising neuroprotective agents because of their structural diversity and wide variety of biological activities. In addition to their neuroprotective effect, they are known for their antioxidant, anti-inflammatory and antiapoptotic effects and often serve as a starting point for drug discovery. In this review, the following natural molecules are discussed: firstly, kynurenic acid, the main neuroprotective agent formed via the kynurenine pathway of tryptophan metabolism, as it is known mainly for its role in glutamate excitotoxicity, secondly, the dietary supplement pantethine, that is many sided, well tolerated and safe, and the third molecule, α-lipoic acid is a universal antioxidant. As a conclusion, because of their beneficial properties, these molecules are potential candidates for neuroprotective therapies suitable in managing neurodegenerative diseases.
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Ozhogin IV, Zolotukhin PV, Mukhanov EL, Rostovtseva IA, Makarova NI, Tkachev VV, Beseda DK, Metelitsa AV, Lukyanov BS. Novel molecular hybrids of indoline spiropyrans and α-lipoic acid as potential photopharmacological agents: Synthesis, structure, photochromic and biological properties. Bioorg Med Chem Lett 2021; 31:127709. [PMID: 33242575 DOI: 10.1016/j.bmcl.2020.127709] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 11/18/2022]
Abstract
Organic photochromic compounds are attracting great interest as photoswitchable components of various bioconjugates for using in photopharmacology, targeted drug delivery and bio-imaging. Here we report on the synthesis of two novel molecular hybrids of indoline spiropyrans and alpha-lipoic acid via an esterification reaction. Preliminary photochemical studies revealed photochromic activity of 5-methoxy-substituted spirocompounds in their acetonitrile solutions. Both hybrid spiropyrans along with their parent substances in the hybrids were tested for the short-term cytotoxicity on HeLa cell cultures. The results of cytotoxicity studies showed unpredictable biocompatibility of the hybrids in comparison with the parent hydroxyl-substituted spiropyrans and α-lipoic acid, especially at the relatively high concentration of 2 mM. Using flow cytometry, we demonstrated that the both hybrids induced antioxidant response in the model cells. After the 24 h treatment, the hybrids administered at lower (500 µM) concentration caused suppressed cytosolic ROS and/or induced cellular thiols. At higher concentration, one of the hybrids demonstrated properties qualitatively similar to alpha-lipoic acid, yet far more strong. Together, flow cytometry results suggested that both hybrids of spiropyrans possess emergent biochemical and signaling antioxidant properties, exceeding those of alpha-lipoic acid.
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Affiliation(s)
- Ilya V Ozhogin
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation.
| | - Peter V Zolotukhin
- Academy of Biology and Biotechnology, Southern Federal University, 194/1 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Eugene L Mukhanov
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Irina A Rostovtseva
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Nadezhda I Makarova
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Valery V Tkachev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Akad. Semenova Ave., 142432 Chernogolovka, Moscow Region, Russian Federation
| | - Darya K Beseda
- Academy of Biology and Biotechnology, Southern Federal University, 194/1 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Anatoly V Metelitsa
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
| | - Boris S Lukyanov
- Institute of Physical and Organic Chemistry, Southern Federal University, 194/2 Stachka Ave., 344090 Rostov-on-Don, Russian Federation
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Trzciński JW, Morillas-Becerril L, Scarpa S, Tannorella M, Muraca F, Rastrelli F, Castellani C, Fedrigo M, Angelini A, Tavano R, Papini E, Mancin F. Poly(lipoic acid)-Based Nanoparticles as Self-Organized, Biocompatible, and Corona-Free Nanovectors. Biomacromolecules 2020; 22:467-480. [PMID: 33347750 PMCID: PMC8016167 DOI: 10.1021/acs.biomac.0c01321] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
![]()
Herein
we present an innovative approach to produce biocompatible,
degradable, and stealth polymeric nanoparticles based on poly(lipoic
acid), stabilized by a PEG-ended surfactant. Taking advantage of the
well-known thiol-induced polymerization of lipoic acid, a universal
and nontoxic nanovector consisted of a solid cross-linked polymeric
matrix of lipoic acid monomers was prepared and loaded with active
species with a one-step protocol. The biological studies demonstrated
a high stability in biological media, the virtual absence of “protein”
corona in biological fluids, the absence of acute toxicity in vitro
and in vivo, complete clearance from the organism, and a relevant
preference for short-term accumulation in the heart. All these features
make these nanoparticles candidates as a promising tool for nanomedicine.
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Affiliation(s)
- Jakub W Trzciński
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
| | - Lucía Morillas-Becerril
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
| | - Sara Scarpa
- Dipartimento di Scienze Biomediche, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy.,Centre for Innovative Biotechnological Research-CRIBI, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy
| | - Marco Tannorella
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
| | - Francesco Muraca
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
| | - Chiara Castellani
- Patologia Cardiovascolare e Anatomia Patologica, Dipartimento di Scienze Cardio-Toraco-Vascolari e Sanità Pubblica, Università di Padova, via Giustiniani 2, Padova, I-35128, Italy
| | - Marny Fedrigo
- Patologia Cardiovascolare e Anatomia Patologica, Dipartimento di Scienze Cardio-Toraco-Vascolari e Sanità Pubblica, Università di Padova, via Giustiniani 2, Padova, I-35128, Italy
| | - Annalisa Angelini
- Patologia Cardiovascolare e Anatomia Patologica, Dipartimento di Scienze Cardio-Toraco-Vascolari e Sanità Pubblica, Università di Padova, via Giustiniani 2, Padova, I-35128, Italy
| | - Regina Tavano
- Dipartimento di Scienze Biomediche, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy.,Centre for Innovative Biotechnological Research-CRIBI, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy
| | - Emanuele Papini
- Dipartimento di Scienze Biomediche, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy.,Centre for Innovative Biotechnological Research-CRIBI, Università di Padova, via U. Bassi 58/B1, Padova, I-35131, Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Padova, I-35131, Italy
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Bottani E, Lamperti C, Prigione A, Tiranti V, Persico N, Brunetti D. Therapeutic Approaches to Treat Mitochondrial Diseases: "One-Size-Fits-All" and "Precision Medicine" Strategies. Pharmaceutics 2020; 12:E1083. [PMID: 33187380 PMCID: PMC7696526 DOI: 10.3390/pharmaceutics12111083] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/11/2022] Open
Abstract
Primary mitochondrial diseases (PMD) refer to a group of severe, often inherited genetic conditions due to mutations in the mitochondrial genome or in the nuclear genes encoding for proteins involved in oxidative phosphorylation (OXPHOS). The mutations hamper the last step of aerobic metabolism, affecting the primary source of cellular ATP synthesis. Mitochondrial diseases are characterized by extremely heterogeneous symptoms, ranging from organ-specific to multisystemic dysfunction with different clinical courses. The limited information of the natural history, the limitations of currently available preclinical models, coupled with the large variability of phenotypical presentations of PMD patients, have strongly penalized the development of effective therapies. However, new therapeutic strategies have been emerging, often with promising preclinical and clinical results. Here we review the state of the art on experimental treatments for mitochondrial diseases, presenting "one-size-fits-all" approaches and precision medicine strategies. Finally, we propose novel perspective therapeutic plans, either based on preclinical studies or currently used for other genetic or metabolic diseases that could be transferred to PMD.
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Affiliation(s)
- Emanuela Bottani
- Department of Diagnostics and Public Health, Section of Pharmacology, University of Verona, 37134 Verona, Italy
| | - Costanza Lamperti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
| | - Alessandro Prigione
- Department of General Pediatrics, Neonatology, and Pediatric Cardiology, University Clinic Düsseldorf (UKD), Heinrich Heine University (HHU), 40225 Dusseldorf, Germany;
| | - Valeria Tiranti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
| | - Nicola Persico
- Department of Clinical Science and Community Health, University of Milan, 20122 Milan, Italy;
- Fetal Medicine and Surgery Service, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Dario Brunetti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20129 Milan, Italy
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XRD and ATR-FTIR techniques for integrity assessment of gamma radiation sterilized cortical bone pretreated by antioxidants. Cell Tissue Bank 2020; 22:305-321. [PMID: 33165827 DOI: 10.1007/s10561-020-09879-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/30/2020] [Indexed: 01/22/2023]
Abstract
Terminal sterilization of bone allograft by gamma radiation is required to reduce the risk of infection. Free radical scavengers could be utilized to minimize the deteriorating effects of gamma radiation on bone allograft mechanical properties. The objective of this research is to assess the changes in structural and chemical composition induced by hydroxytyrosol (HT) and alpha lipoic acid (ALA) free radical scavengers in gamma sterilized cortical bone. Bovine femurs specimens were soaked in different concentrations of HT and ALA for 7 and 3 days respectively before irradiation with 35 KGy gamma radiation. The attenuated total reflection-Fourier transform infrared spectroscopy and the X-ray diffraction techniques were utilized to analyze the changes in chemical composition induced by irradiation in the presence of free radical scavengers. A significant increase in the proportion of amide I and amide II to phosphate was noticed in the irradiated group, while in the pretreated groups with ALA and HT this effect was minimized. In addition, gamma radiation reduced the mature to immature cross links while ALA and HT alleviated this reduction. No significant changes were noticed in the mineral crystallinity or crystal size. Bone chemical structure has been changed due to gamma irradiation and these changes are mainly relevant to amide I, amide II proportions and collagen crosslinks. The deteriorating effects of gamma sterilization dose (35 kGy) on chemical structure of bone allograft can be alleviated by using (HT) and (ALA) free radical scavengers before irradiation.
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Watanabe M, Risi R, Masi D, Caputi A, Balena A, Rossini G, Tuccinardi D, Mariani S, Basciani S, Manfrini S, Gnessi L, Lubrano C. Current Evidence to Propose Different Food Supplements for Weight Loss: A Comprehensive Review. Nutrients 2020; 12:E2873. [PMID: 32962190 PMCID: PMC7551574 DOI: 10.3390/nu12092873] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023] Open
Abstract
The use of food supplements for weight loss purposes has rapidly gained popularity as the prevalence of obesity increases. Navigating through the vast, often low quality, literature available is challenging, as is providing informed advice to those asking for it. Herein, we provide a comprehensive literature revision focusing on most currently marketed dietary supplements claimed to favor weight loss, classifying them by their purported mechanism of action. We conclude by proposing a combination of supplements most supported by current evidence, that leverages all mechanisms of action possibly leading to a synergistic effect and greater weight loss in the foreseen absence of adverse events. Further studies will be needed to confirm the weight loss and metabolic improvement that may be obtained through the use of the proposed combination.
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Affiliation(s)
- Mikiko Watanabe
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Renata Risi
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Davide Masi
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Alessandra Caputi
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Angela Balena
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Giovanni Rossini
- Department of Endocrinology and Diabetes, University Campus Bio-Medico of Rome, 00128 Rome, Italy; (G.R.); (D.T.); (S.M.)
| | - Dario Tuccinardi
- Department of Endocrinology and Diabetes, University Campus Bio-Medico of Rome, 00128 Rome, Italy; (G.R.); (D.T.); (S.M.)
| | - Stefania Mariani
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Sabrina Basciani
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Silvia Manfrini
- Department of Endocrinology and Diabetes, University Campus Bio-Medico of Rome, 00128 Rome, Italy; (G.R.); (D.T.); (S.M.)
| | - Lucio Gnessi
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
| | - Carla Lubrano
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, 00161 Rome, Italy; (M.W.); (D.M.); (A.C.); (A.B.); (S.M.); (S.B.); (L.G.); (C.L.)
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AgNP/Alginate Nanocomposite hydrogel for antimicrobial and antibiofilm applications. Carbohydr Polym 2020; 251:117017. [PMID: 33142578 DOI: 10.1016/j.carbpol.2020.117017] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/23/2020] [Accepted: 08/27/2020] [Indexed: 02/07/2023]
Abstract
The synthesis and specific surface functionalization of antimicrobial silver nanoparticles (AgNPs) and their incorporation into an alginate hydrogel is described. Divalent cation-mediated ionic crosslinking was used to disperse the AgNPs throughout the gel, made possible by -COO- cross-linking sites provided by the surface-enhanced nanoparticles, inspired by the classic egg-box model crosslinking of calcium alginate. An AgNP concentration, 10-20 μg g-1 increased hygrogel elasticity, viscosity, and shear resistance by 45, 30, and 31% respectively. Cryo-TEM revealed evenly distributed AgNP assemblies of discrete AgNPs throughout the gel matrices. FTIR-ATR indicated AgNPs were involved in alginate carboxylate-Ca2+-COO-AgNP crossbridging, which was not achieved through mixing of AgNPs into preformed gels. Live/dead fluorometric assays determined a minimal bactericidal concentration of 25 μg g-1 Ag for 6 microorganisms. Anti-biofilm assays showed species-dependent cell death of 44 -61%, with limited silver ion release of 0.41% and 1.1% after 7 days for Gram positive and negative bacteria, respectively.
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Abbasi B, Molavi N, Tavalaee M, Abbasi H, Nasr-Esfahani MH. Alpha-lipoic acid improves sperm motility in infertile men after varicocelectomy: a triple-blind randomized controlled trial. Reprod Biomed Online 2020; 41:1084-1091. [PMID: 33032908 DOI: 10.1016/j.rbmo.2020.08.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 08/06/2020] [Accepted: 08/14/2020] [Indexed: 02/03/2023]
Abstract
RESEARCH QUESTION Does supplementation with alpha-lipoic acid (ALA) enhance sperm parameters and/or the status of sperm lipid peroxidation and DNA fragmentation in men who have undergone microsurgical repair of a varicocele? DESIGN Individuals with a varicocele who had undergone varicocelectomy were divided into two groups receiving either 600 mg of ALA or an identical placebo for 80 days. Semen samples obtained from the participants before surgery and after completion of the course of medication were analysed and compared. Participants, clinicians and data analysts were blinded to the randomization sequence. RESULTS In the ALA group, total motility (P = 0.01) and progressive motility (P = 0.002) of the spermatozoa were significantly higher compared with the placebo group after surgery. Sperm lipid peroxidation and DNA damage (assessed by sperm chromatin structure assay) showed significant decreases in both the ALA and placebo groups (P ≤ 0.02) after treatment. CONCLUSIONS An 80-day course of ALA medication after surgical repair improves total motility and progressive motility of the spermatozoa in individuals with a varicocele.
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Affiliation(s)
- Behzad Abbasi
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran; Isfahan Fertility and Infertility Center, Isfahan, Iran
| | - Newsha Molavi
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Marziyeh Tavalaee
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | | | - Mohammad H Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran; Isfahan Fertility and Infertility Center, Isfahan, Iran.
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El-Hansi NS, Sallam AM, Talaat MS, Said HH, Khalaf MA, Desouky OS. Biomechanical properties enhancement of gamma radiation-sterilized cortical bone using antioxidants. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2020; 59:571-581. [PMID: 32444954 DOI: 10.1007/s00411-020-00848-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
Gamma radiation sterilization is the method used by the majority of tissue banks to reduce disease transmission from infected donors to recipients through bone allografts. However, many studies have reported that gamma radiation impairs the structural and mechanical properties of bone via formation of free radicals, the effect of which could be reduced using free radical scavengers. The aim of this study is to examine the radioprotective role of hydroxytyrosol (HT) and alpha lipoic acid (ALA) on the mechanical properties of gamma-sterilized cortical bone of bovine femur, using three-point bending and microhardness tests. Specimens of bovine femurs were soaked in ALA and HT for 3 and 7 days, respectively, before being exposed to 35-kGy gamma radiation. In unirradiated samples, both HT and ALA pre-treatment improved the cortical bone bending plastic properties (maximum bending stress, maximum bending strain, and toughness) without affecting microhardness. Irradiation resulted in a drastic reduction of the plastic properties and an increased microhardness. ALA treatment before irradiation alleviated the aforementioned reductions in maximum bending stress, maximum bending strain, and toughness. In addition, under ALA treatment, the microhardness was not increased after irradiation. For HT treatment, similar effects were found. In conclusion, the results indicate that HT and ALA can be used before irradiation to enhance the mechanical properties of gamma-sterilized bone allografts.
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Affiliation(s)
- Naglaa S El-Hansi
- Biophysics Lab, Radiation Physics Department, (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt
| | - Abdelsattar M Sallam
- Biophysics Branch, Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Mona S Talaat
- Biophysics Branch, Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hoda H Said
- Biophysics Lab, Radiation Physics Department, (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt.
| | - Mahmoud A Khalaf
- Microbiology Department (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt
| | - Omar S Desouky
- Biophysics Lab, Radiation Physics Department, (NCRRT), Atomic Energy Authority (AEA), Nasr City, Cairo, Egypt
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Monreal-Corona R, Biddlecombe J, Ippolito A, Mora-Diez N. Theoretical Study of the Iron Complexes with Lipoic and Dihydrolipoic Acids: Exploring Secondary Antioxidant Activity. Antioxidants (Basel) 2020; 9:E674. [PMID: 32731543 PMCID: PMC7465238 DOI: 10.3390/antiox9080674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 12/19/2022] Open
Abstract
The thermodynamic stability of twenty-nine Fe(III) complexes with various deprotonated forms of lipoic (LA) and dihydrolipoic (DHLA) acids, with coordination numbers 4, 5 and 6, is studied at the M06(SMD)/6-31++G(d,p) level of theory in water under physiological pH conditions at 298.15 K. Even though the complexes with LA- are more stable than those with DHLA-, the most thermodynamically stable Fe(III) complexes involve DHLA2-. The twenty-four exergonic complexes are used to evaluate the secondary antioxidant activity of DHLA and LA relative to the Fe(III)/Fe(II) reduction by O2•- and ascorbate. Rate constants for the single-electron transfer (SET) reactions are calculated. The thermodynamic stability of the Fe(III) complexes does not fully correlate with the rate constant of their SET reactions, but more exergonic complexes usually exhibit smaller SET rate constants. Some Cu(II) complexes and their reduction to Cu(I) are also studied at the same level of theory for comparison. The Fe(III) complexes appear to be more stable than their Cu(II) counterparts. Relative to the Fe(III)/Fe(II) reduction with ascorbate, DHLA can fully inhibit the formation of •OH radicals, but not by reaction with O2•-. Relative to the Cu(II)/Cu(I) reduction with ascorbate, the effects of DHLA are moderate/high, and with O2•- they are minor. LA has minor to negligible inhibition effects in all the cases considered.
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Affiliation(s)
| | | | | | - Nelaine Mora-Diez
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada; (R.M.-C.); (J.B.); (A.I.)
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Makhova AA, Shikh EV, Bulko TV, Gilep AA, Usanov SA, Shumyantseva VV. No effect of lipoic acid on catalytic activity of cytochrome P450 3A4. Drug Metab Pers Ther 2020; 35:dmpt-2020-0105. [PMID: 32712589 DOI: 10.1515/dmpt-2020-0105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 05/13/2020] [Indexed: 01/10/2023]
Abstract
Objectives α-Lipoic acid is used as an antioxidant in multivitamin formulations to restore the normal level of intracellular glutathione after depletion caused by environmental pollutants or during physiological aging of the body, as a chelating agent, as a dietary supplement, in anti-aging compositions. Lipoic acid (LA) acts as a buffer in cancer therapy and in therapy of diseases associated with oxidative stress. The effect of LA on the catalytic functions of cytochrome P450 3A4 as the main enzyme of the biotransformation of drugs was studied. It was shown that LA in the concentration range of 50-200 μM affects the stage of electron transfer (stage of cytochrome P450 3A4 heme reduction), decreasing the cathodic reduction current by an average of 20 ± 5%. The kinetic parameters (k cat) of the N-demethylation reaction of erythromycin, the antibiotic of the macrolide group, used as a marker substrate for the comparative analysis of the catalytic activity of cytochrome P450 3A4, both in the presence of α-lipoic acid and in the cytochrome P450 3A4-erythromycin complex, amounted to comparable values of 3.5 ± 0.9 and 3.4 ± 0.9 min-1, respectively. Based on these experimental data, we can conclude that there is no significant effect of α-lipoic acid on the catalysis of cytochrome P450 3A4. These results can be projected on the possibility of using α-lipoic acid in complex therapy without negative impact on the enzymatic cytochrome P450 system. Methods The analysis was performed in electrochemical non-invasive model systems for recording the catalytic activity of cytochrome P450 3A4, using screen-printed electrodes, modified with membranous didodecyldimethylammonium bromide. Results It was shown that LA did not affect the N-demethylation of macrolide antibiotic erythromycin. Catalytic constant (k cat) of N-demethylation of erythromycin corresponds to 3.4 ± 0.9 min-1 and in the presence of LA corresponds to 3.5 ± 0.9 min-1. Conclusions Based on the obtained experimental data, we can conclude that there is no significant effect of α-lipoic acid on individual stages and processes of catalysis of cytochrome P450 3A4. LA can be recommended for inclusion in complex therapy as an antioxidant, antitoxic and chelating compound without negative impact on the enzymatic cytochrome P450 3A4 activity of the human body.
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Affiliation(s)
- Anna A Makhova
- Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Evgeniya V Shikh
- Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Tatiana V Bulko
- Institute of Biomedical Chemistry, Moscow, Russian Federation
| | | | | | - Victoria V Shumyantseva
- Institute of Biomedical Chemistry, Moscow, Russian Federation.,Pirogov Russian National Research Medical University, Moscow, Russian Federation
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Bobe G, Michels AJ, Zhang WJ, Purnell JQ, Woffendin C, Pereira C, Vita JA, Thomas NO, Traber MG, Frei B, Hagen TM. A Randomized Controlled Trial of Long-Term (R)-α-Lipoic Acid Supplementation Promotes Weight Loss in Overweight or Obese Adults without Altering Baseline Elevated Plasma Triglyceride Concentrations. J Nutr 2020; 150:2336-2345. [PMID: 32692358 PMCID: PMC7540064 DOI: 10.1093/jn/nxaa203] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/14/2020] [Accepted: 06/22/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND α-Lipoic acid (LA) is a dietary supplement for maintaining energy balance, but well-controlled clinical trials in otherwise healthy, overweight adults using LA supplementation are lacking. OBJECTIVES The primary objective was to evaluate whether LA supplementation decreases elevated plasma triglycerides in overweight or obese adults. Secondary aims examined if LA promotes weight loss and improves oxidative stress and inflammation. METHODS Overweight adults [n = 81; 57% women; 21-60 y old; BMI (in kg/m2) ≥ 25] with elevated plasma triglycerides ≥100 mg/dL were enrolled in a 24-wk, randomized, double-blind, controlled trial, assigned to either (R)-α-lipoic acid (R-LA; 600 mg/d) or matching placebo, and advised not to change their diet or physical activity. Linear models were used to evaluate treatment effects from baseline for primary and secondary endpoints. RESULTS R-LA did not decrease triglyceride concentrations, but individuals on R-LA had a greater reduction in BMI at 24 wk than the placebo group (-0.8; P = 0.04). The effect of R-LA on BMI was correlated to changes in plasma triglycerides (r = +0.50, P = 0.004). Improvement in body weight was greater at 24 wk in R-LA subgroups than in placebo subgroups. Women and obese participants (BMI ≥ 35) showed greater weight loss (-5.0% and -4.8%, respectively; both P < 0.001) and loss of body fat (-9.4% and -8.6%, respectively; both P < 0.005). Antioxidant gene expression in mononuclear cells at 24 wk was greater in the R-LA group (Heme oxygenase 1 [HMOX1] : +22%; P = 0.02) than in placebo. Less urinary F2-isoprostanes (-25%; P = 0.005), blood leukocytes (-10.1%; P = 0.01), blood thrombocytes (-5.1%; P = 0.03), and ICAM-1 (-7.4%; P = 0.04) at 24 wk were also observed in the R-LA group than in placebo. CONCLUSIONS Long-term LA supplementation results in BMI loss, greater antioxidant enzyme synthesis, and less potential for inflammation in overweight adults. Improved cellular bioenergetics is also evident in some individuals given R-LA.This trial was registered at clinicaltrials.gov as NCT00765310.
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Affiliation(s)
- Gerd Bobe
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | | | - Wei-Jian Zhang
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA,Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
| | - Jonathan Q Purnell
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Clive Woffendin
- Oregon Clinical and Translational Research Institute, Oregon Health & Science University, Portland, OR, USA
| | - Cliff Pereira
- Department of Statistics, Oregon State University, Corvallis, OR, USA
| | - Joseph A Vita
- Evans Department of Medicine and the Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Nicholas O Thomas
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Maret G Traber
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA
| | - Balz Frei
- Linus Pauling Institute, Oregon State University, Corvallis, OR, USA,Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA
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Effects of alpha-lipoic acid on skeletal muscle ischemia-reperfusion injury in mice. JOURNAL OF SURGERY AND MEDICINE 2020. [DOI: 10.28982/josam.764953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhu K, Chen H, Jin J, Wang N, Ma G, Huang J, Feng Y, Xin J, Zhang H, Liu H. Functional Identification and Structural Analysis of a New Lipoate Protein Ligase in Mycoplasma hyopneumoniae. Front Cell Infect Microbiol 2020; 10:156. [PMID: 32373550 PMCID: PMC7186572 DOI: 10.3389/fcimb.2020.00156] [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: 01/10/2020] [Accepted: 03/24/2020] [Indexed: 11/13/2022] Open
Abstract
Mycoplasma hyopneumoniae (M. hyopneumoniae) is the causative agent of pandemic pneumonia among pigs, namely, swine enzootic pneumonia. Although M. hyopneumoniae was first identified in 1965, little is known regarding its metabolic pathways, which might play a pivotal role during disease pathogenesis. Lipoate is an essential cofactor for enzymes important for central metabolism. However, the lipoate metabolism pathway in M. hyopneumoniae is definitely unclear. Here, we identified a novel gene, lpl, encoding a lipoate protein ligase in the genome of M. hyopneumoniae (Mhp-Lpl). This gene contains 1,032 base pairs and encodes a protein of 343 amino acids, which is between 7.5 and 36.09% identical to lipoate protein ligases (Lpls) of other species. Similar to its homologs in other species, Mhp-Lpl catalyzes the ATP-dependent activation of lipoate to lipoyl-AMP and the transfer of the activated lipoyl onto the lipoyl domains of M. hyopneumoniae GcvH (Mhp H) in vitro. Enzymatic and mutagenesis analysis indicate that residue K56 within the SKT sequence of Mhp H protein is the lipoyl moiety acceptor site. The three-dimensional structure showed typical lipoate protein ligase folding, with a large N-terminal domain and a small C-terminal domain. The large N-terminal domain is responsible for the full enzymatic activity of Mhp-Lpl. The identification and characterization of Mhp-Lpl will be beneficial to our understanding of M. hyopneumoniae metabolism. Summary Lipoic acid is an essential cofactor for the activation of some enzyme complexes involved in key metabolic processes. Lipoate protein ligases (Lpls) are responsible for the metabolism of lipoic acid. To date, little is known regarding the Lpls in M. hyopneumoniae. In this study, we identified a lipoate protein ligase of M. hyopneumoniae. We further analyzed the function, overall structure and ligand-binding site of this protein. The lipoate acceptor site on M. hyopneumoniae GcvH was also identified. Together, these findings reveal that Lpl exists in M. hyopneumoniae and will provide a basis for further exploration of the pathway of lipoic acid metabolism in M. hyopneumoniae.
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Affiliation(s)
- Kemeng Zhu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Huan Chen
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment and SUSTech-HKU Joint Laboratories for Matrix Biology and Diseases, Southern University of Science and Technology, Shenzhen, China.,School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jin Jin
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Ning Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Guixing Ma
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment and SUSTech-HKU Joint Laboratories for Matrix Biology and Diseases, Southern University of Science and Technology, Shenzhen, China
| | - Jiandong Huang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Youjun Feng
- Department of Pathogen Biology and Microbiology, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiuqing Xin
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongmin Zhang
- Department of Biology, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment and SUSTech-HKU Joint Laboratories for Matrix Biology and Diseases, Southern University of Science and Technology, Shenzhen, China
| | - Henggui Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, China
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Orally Administered Alpha Lipoic Acid as a Treatment for Geographic Atrophy: A Randomized Clinical Trial. Ophthalmol Retina 2020; 4:889-898. [PMID: 32418846 DOI: 10.1016/j.oret.2020.03.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/15/2020] [Accepted: 03/23/2020] [Indexed: 12/31/2022]
Abstract
PURPOSE Alpha lipoic acid (ALA) is a nutraceutical and potent antioxidant that has shown efficacy in the retina light damage mouse model and in humans for multiple sclerosis. Our objective was to evaluate the efficacy and safety of oral ALA for the treatment of geographic atrophy (GA). DESIGN Randomized, controlled, double-masked, multicenter phase 2 clinical trial of ALA versus placebo. PARTICIPANTS Participants with unilateral or bilateral GA from age-related macular degeneration. METHODS Participants were randomized to 1200 mg daily of ALA or placebo. Fundus autofluorescence, fundus color photography, and spectral-domain OCT were conducted and best-corrected visual acuity (BCVA) was obtained at baseline and every 6 months through month 18. MAIN OUTCOME MEASURES Annual rate of change over 18 months in square root-transformed area of GA in study eyes as measured on fundus autofluorescence. Secondary outcomes included the number of adverse events (AEs), change in BCVA, and annual rate of change in area of GA measured on color photographs. RESULTS Fifty-three participants (mean age, 80 years) were randomized (April 2016-August 2017). Twenty-seven participants (37 eyes) were in the placebo group, and 26 participants (36 eyes) were in the ALA group. Unadjusted mean (standard error) annual change in GA area was 0.28 (0.02) mm and 0.31 (0.02) mm for the placebo and ALA groups, respectively (difference, 0.04 mm; 95% confidence interval [CI], -0.03 to 0.11 mm; P = 0.30). Adjusting for baseline GA area, number of GA lesions, and presence of subfoveal GA, the mean annual change in GA area was 0.27 (0.04) mm and 0.32 (0.05) mm for the placebo and ALA groups, respectively (difference, 0.05 mm; 95% CI, -0.02 to 0.12 mm; P = 0.14). At 18 months, the percent of eyes losing 15 letters or more of BCVA was 22% (8 of 36) and 14% (5 of 36) in the placebo and ALA groups, respectively (P = 0.54). No difference was found in the percentage of participants with nonserious AEs (P = 0.96) or serious AEs (P = 0.28) between the placebo and ALA groups. CONCLUSIONS Results do not support ALA having beneficial effects on GA or BCVA. This trial design may be useful for other GA repurposing drug trials.
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Binte Hossain KF, Rahman MM, Sikder MT, Hosokawa T, Saito T, Kurasaki M. Regulatory effects of dihydrolipoic acid against inorganic mercury-mediated cytotoxicity and intrinsic apoptosis in PC12 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 192:110238. [PMID: 32036095 DOI: 10.1016/j.ecoenv.2020.110238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/15/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Mercury (Hg) is an extremely dangerous environmental contaminant, responsible for human diseases including neurological disorders. However, the mechanisms of inorganic Hg (iHg)-induced cell death and toxicity are little known. Dihydrolipoic acid (DHLA) is the reduced form of a naturally occurring compound lipoic acid, which act as a potent antioxidant through multiple mechanisms. So we hypothesized that DHLA has an inhibitory role on iHg-cytotoxicity. The purposes of this research were to investigate mechanism/s of cytotoxicity of iHg, as well as, the cyto-protection of DHLA against iHg induced toxicity using PC12 cells. Treatment of PC12 cells with HgCl2 (Hg2+) (0-2.5 μM) for 48 h resulted in significant toxic effects, such as, cell viability loss, high level of lactate dehydrogenase (LDH) release, DNA damage, cellular glutathione (GSH) level decrease and increased Hg accumulation. In addition, protein level expressions of akt, p-akt, mTOR, GR, NFkB, ERK1, Nrf2 and HO-1 in cells were downregulated; and cleaved caspase 3 and cytochrome c release were upregulated after Hg2+ (2.5 μM) exposure and thus inducing apoptosis. Hg2+induced apoptosis was also confirmed by flow cytometry. However, pretreatment with DHLA (50 μM) for 3 h before Hg2+ (2.5 μM) exposure showed inhibition against iHg2+-induced cytotoxicity by reversing cell viability loss, LDH release, DNA damage, GSH decrease and inhibiting Hg accumulation. Moreover, DHLA pretreatment reversed the protein level expressions of akt, p-akt, mTOR, GR, NFkB, ERK1, Nrf2, HO-1, cleaved caspase 3 and cytochrome c. In conclusion, results showed that DHLA could attenuate Hg2+-induced cytotoxicity via limiting Hg accumulation, boosting up of antioxidant defense, and inhibition of apoptosis in cells.
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Affiliation(s)
| | - Md Mostafizur Rahman
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, 060-0810, Japan; Department of Environmental Science, Jahangirnagar University, Dhaka, 1342, Bangladesh
| | - Md Tajuddin Sikder
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, 060-0810, Japan; Department of Public Health and Informatics, Jahangirnagar University, Dhaka, 1342, Bangladesh
| | - Toshiyuki Hosokawa
- Institute for the Advancement of Higher Education, Hokkaido University, Sapporo, 060-0817, Japan
| | - Takeshi Saito
- Faculty of Health Science, Hokkaido University, Sapporo, 060-0812, Japan
| | - Masaaki Kurasaki
- Graduate School of Environmental Science, Hokkaido University, Sapporo, 060-0810, Japan; Faculty of Environmental Earth Science, Hokkaido University, Sapporo, 060-0810, Japan.
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Shi M, Wang S, Zheng S, Hou P, Dong L, He M, Wu C, Zhang X, Zuo F, Xu K, Li J. Activatable MRI-monitoring gene delivery for the theranostic of renal carcinoma. Colloids Surf B Biointerfaces 2020; 185:110625. [DOI: 10.1016/j.colsurfb.2019.110625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/15/2019] [Accepted: 10/30/2019] [Indexed: 01/21/2023]
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Alpha-Lipoic Acid Protects Cardiomyocytes against Heat Stroke-Induced Apoptosis and Inflammatory Responses Associated with the Induction of Hsp70 and Activation of Autophagy. Mediators Inflamm 2019; 2019:8187529. [PMID: 31885498 PMCID: PMC6914879 DOI: 10.1155/2019/8187529] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/21/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022] Open
Abstract
Heat stroke (HS) is a life-threatening illness and defined as when body temperature elevates above 40°C accompanied by the systemic inflammatory response syndrome that results in multiple organ dysfunctions. α-Lipoic acid (ALA) acts as a cofactor of mitochondrial enzymes and exerts anti-inflammatory and antioxidant properties in a variety of diseases. This study investigates the beneficial effects of ALA on myocardial injury and organ damage caused by experimental HS and further explores its underlying mechanism. Male Wistar rats were exposed to 42°C until their rectal core temperature reached 42.9°C and ALA was pretreared 40 or 80 mg/kg (i.v.) 1.5 h prior to heat exposure. Results showed that HS-induced lethality and hypothermia were significantly alleviated by ALA treatment that also improved plasma levels of CRE, LDH, and CPK and myocardial injury biomarkers myoglobin and troponin. In addition, ALA reduced cardiac superoxide anion formation and protein expression of cleaved caspase 3 caused by HS. Proinflammatory cytokine TNF-α and NF-κB pathways were significantly reduced by ALA treatment which may be associated with the upregulation of Hsp70. ALA significantly increased the Atg5-12 complex and LC3B II/LC3B I ratio, whereas the p62 and p-mTOR expression was attenuated in HS rats, indicating the activation of autophagy by ALA. In conclusion, ALA ameliorated the deleterious effects of HS by exerting antioxidative and anti-inflammatory capacities. Induction of Hsp70 and activation of autophagy contribute to the protective effects of ALA in HS-induced myocardial injury.
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Martini ML, Neifert SN, Mocco J, Panov F, Tse W, Walker RH, Jin J, Gupta F. Recent Advances in the Development of Experimental Therapeutics for Levodopa-Induced Dyskinesia. J Mov Disord 2019; 12:161-165. [PMID: 31556261 PMCID: PMC6763722 DOI: 10.14802/jmd.19029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/09/2019] [Indexed: 01/05/2023] Open
Affiliation(s)
- Michael L Martini
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sean N Neifert
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - J Mocco
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Fedor Panov
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Winona Tse
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ruth H Walker
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,James J. Peters VA Medical Center, Bronx, NY, USA
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Fiona Gupta
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Pang L, Deng P, Liang YD, Qian JY, Wu LC, Yang LL, Yu ZP, Zhou Z. Lipoic acid antagonizes paraquat-induced vascular endothelial dysfunction by suppressing mitochondrial reactive oxidative stress. Toxicol Res (Camb) 2019; 8:918-927. [PMID: 32774841 DOI: 10.1039/c9tx00186g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/23/2019] [Indexed: 12/19/2022] Open
Abstract
Paraquat (PQ) is a widely used herbicide in the agricultural field. The lack of an effective antidote is the significant cause of high mortality in PQ poisoning. Here, we investigate the antagonistic effects of alpha lipoic acid (α-LA), a naturally existing antioxidant, on PQ toxicity in human microvascular endothelial cells (HMEC-1). All the doses of 250, 500 and 1000 μM α-LA significantly inhibited 1000 μM PQ-induced cytotoxicity in HMEC-1 cells. α-LA pretreatment remarkably diminished the damage to cell migration ability, recovered the declined levels of the vasodilator factor nitric oxide (NO), elevated the expression level of endothelial nitric oxide synthases (eNOS), and inhibited the upregulated expression of vasoconstrictor factor endothelin-1 (ET-1). Moreover, α-LA pretreatment inhibited reactive oxygen species (ROS) generation, suppressed the damage to the mitochondrial membrane potential (ΔΨ m) and mitigated the inhibition of adenosine triphosphate (ATP) production in HMEC-1 cells. These results suggested that α-LA could alleviate PQ-induced endothelial dysfunction by suppressing oxidative stress. In summary, our present study provides novel insight into the protective effects and pharmacological potential of α-LA against PQ toxicity in microvascular endothelial cells.
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Affiliation(s)
- Li Pang
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China .
| | - Ping Deng
- Department of Occupational Health , Third Military Medical University , Chongqing 400038 , China
| | - Yi-Dan Liang
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China .
| | - Jing-Yu Qian
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China .
| | - Li-Chuan Wu
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China .
| | - Ling-Ling Yang
- Department of Occupational Health , Third Military Medical University , Chongqing 400038 , China
| | - Zheng-Ping Yu
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China . .,Department of Occupational Health , Third Military Medical University , Chongqing 400038 , China
| | - Zhou Zhou
- Department of Cell Biology , School of Life Sciences and School of Medicine , Guangxi University , Nanning 530004 , China .
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