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Abdullah KM, Sharma G, Takkar S, Kaushal JB, Pothuraju R, Chakravarti B, Batra SK, Siddiqui JA. α-lipoic acid modulates prostate cancer cell growth and bone cell differentiation. Sci Rep 2024; 14:4404. [PMID: 38388663 PMCID: PMC10884017 DOI: 10.1038/s41598-024-54479-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 02/12/2024] [Indexed: 02/24/2024] Open
Abstract
Prostate cancer (PCa) progression leads to bone modulation in approximately 70% of affected men. A nutraceutical, namely, α-lipoic acid (α-LA), is known for its potent anti-cancer properties towards various cancers and has been implicated in treating and promoting bone health. Our study aimed to explore the molecular mechanism behind the role of α-LA as therapeutics in preventing PCa and its associated bone modulation. Notably, α-LA treatment significantly reduced the cell viability, migration, and invasion of PCa cell lines in a dose-dependent manner. In addition, α-LA supplementation dramatically increased reactive oxygen species (ROS) levels and HIF-1α expression, which started the downstream molecular cascade and activated JNK/caspase-3 signaling pathway. Flow cytometry data revealed the arrest of the cell cycle in the S-phase, which has led to apoptosis of PCa cells. Furthermore, the results of ALP (Alkaline phosphatase) and TRAP (tartrate-resistant acid phosphatase) staining signifies that α-LA supplementation diminished the PCa-mediated differentiation of osteoblasts and osteoclasts, respectively, in the MC3T3-E1 and bone marrow macrophages (BMMs) cells. In summary, α-LA supplementation enhanced cellular apoptosis via increased ROS levels, HIF-1α expression, and JNK/caspase-3 signaling pathway in advanced human PCa cell lines. Also, the treatment of α-LA improved bone health by reducing PCa-mediated bone cell modulation.
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Affiliation(s)
- K M Abdullah
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Gunjan Sharma
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Simran Takkar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jyoti B Kaushal
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Ramesh Pothuraju
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Cancer Research Program, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, 695014, India
| | - Bandana Chakravarti
- Department of Endocrinology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, 226014, India
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
| | - Jawed A Siddiqui
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Biochemistry and Molecular Biology, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
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Li X, Wang HY, Gao F, Guo FF, Wang XN, Pan YX, Bai GQ. Tenofovir alters the immune microenvironment of pregnant women with hepatitis B virus infection: Evidence from single-cell RNA sequencing. Int Immunopharmacol 2023; 119:110245. [PMID: 37163920 DOI: 10.1016/j.intimp.2023.110245] [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: 03/23/2023] [Revised: 04/16/2023] [Accepted: 04/23/2023] [Indexed: 05/12/2023]
Abstract
BACKGROUND Mother-to-child is the main route of the transmission of hepatitis B virus (HBV) infection. Tenofovir fumarate (TDF) antiviral treatment has become the most extensive choice worldwide. However, the effects of TDF treatment on the immune function of pregnant women remains unclear. Here we investigate the effect of TDF treatment on the immune microenvironment of pregnant women with HBV infection using single-cell RNA sequencing (scRNA-seq). METHODS Three HBV-infected pregnant women were treated with TDF and six samples were collected before and after the treatment. In total, 68,200 peripheral blood mononuclear cells (PBMCs) were extracted for 10 × scRNA-seq. The cells were clustered using t-distributed stochastic neighbor embedding (t-SNE) and unbiased computational informatics analysis. RESULTS The analysis identified four-cell subtypes, including T cells, monocytes, natural killer (NK) cells, and B cells, and unraveled the developmental trajectory and maturation of CD4+ T and CD8+ T cell subtypes. The cellular state and molecular features of the effector/memory T cells revealed a significant increase in the inflammatory state of CD4+ T cells and the cytotoxic characteristics of CD8+ T cells. Additionally, after TDF treatment, the monocytes showed a tendency for M1 polarization, and the cytotoxicity of NK cells was enhanced. Furthermore, the analysis of intercellular communication revealed the interaction of various subtypes of cells and the heterogeneous expression of key signal pathways. CONCLUSIONS The findings of this study reveal significant differences in cellular subtypes and molecular characteristics of PBMCs of pregnant women with HBV infection before and after TDF treatment and demonstrate the recovery of immune response after treatment. These findings could help develop immune intervention measures to control HBV during pregnancy and the puerperium period.
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Affiliation(s)
- Xia Li
- Gene Joint Laboratory, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hong-Yan Wang
- Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Fan Gao
- Clinical Research Center, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Fan-Fan Guo
- Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Xiao-Na Wang
- Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yi-Xia Pan
- Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Gui-Qin Bai
- Gene Joint Laboratory, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China; Department of Gynecology and Obstetrics, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Alpha lipoic acid reverses scopolamine-induced spatial memory loss and pyramidal cell neurodegeneration in the prefrontal cortex of Wistar Rats. IBRO Neurosci Rep 2022; 13:1-8. [PMID: 35664083 PMCID: PMC9157193 DOI: 10.1016/j.ibneur.2022.05.005] [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: 03/05/2021] [Accepted: 05/15/2022] [Indexed: 11/22/2022] Open
Abstract
Neurodegenerative disorders are linked to oxidative tissue damage characterized by gradual loss of cognitive functions and neuronal cells. Alpha-lipoic acid (AHA) has a strong antioxidant property. Scopolamine is an anti-muscarinic agent used to study the mechanism of memory loss in an animal model. This study is aimed at evaluating the antioxidant role of alpha lipoic acid in reversing scopolamine induced memory loss and neurodegenerative process in the prefrontal cortex of Wistar rats. Twenty adult male Wistar rats used were divided into four groups (n = 5): Group 1 received vehicle (Control), Group 2 had scopolamine (1 mg/kg, i.p) for 4 days, Group 3 received AHA (200 mg/kg, p.o) for 10 days while Group 4 were pretreated with scopolamine (1 mg/kg, i.p) for 4 days followed by oral administration of 200 mg/kg of AHA for 10 days. The rats were subjected to Y-maze test to assess their spatial memory. The rats were euthanized, the prefrontal area was excised and fixed in 10% formol-calcium and processed for Haematoxylin and Eosin, Cresyl fast violet for Nissl Bodies (Ribosome), and Glial Fibrillary Acidic Protein (GFAP) stains. Scopolamine caused a significant decline in spatial working memory, prefrontal neuron cell loss, and increased proliferation of reactive astrocytes (astrogliosis) when compared with the control and AHA treated group. AHA process of reversing scopolamine-induced memory deficit, prefrontal neuron cell loss, and generation of reactive astrocytes (astrogliosis) is mediated by its antioxidant mediated positive modulation of astrocyte-neuronal interaction during neuroinflammation in response to oxidative tissue damage.
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Abstract
Significance: Oxidative stress in moderation positively affects homeostasis through signaling, while in excess it is associated with adverse health outcomes. Both activities are generally attributed to reactive oxygen species (ROS); hydrogen peroxide as the signal, and cysteines on regulatory proteins as the target. However, using antioxidants to affect signaling or benefit health has not consistently translated into expected outcomes, or when it does, the mechanism is often unclear. Recent Advances: Reactive sulfur species (RSS) were integral in the origin of life and throughout much of evolution. Sophisticated metabolic pathways that evolved to regulate RSS were easily "tweaked" to deal with ROS due to the remarkable similarities between the two. However, unlike ROS, RSS are stored, recycled, and chemically more versatile. Despite these observations, the relevance and regulatory functions of RSS in extant organisms are generally underappreciated. Critical Issues: A number of factors bias observations in favor of ROS over RSS. Research conducted in room air is hyperoxic to cells, and promotes ROS production and RSS oxidation. Metabolic rates of rodent models greatly exceed those of humans; does this favor ROS? Analytical methods designed to detect ROS also respond to RSS. Do these disguise the contributions of RSS? Future Directions: Resolving the ROS/RSS issue is vital to understand biology in general and human health in particular. Improvements in experimental design and analytical methods are crucial. Perhaps the most important is an appreciation of all the attributes of RSS and keeping an open mind.
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Affiliation(s)
- Kenneth R Olson
- Department of Physiology, Indiana University School of Medicine-South Bend, South Bend, Indiana, USA
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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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Bellissimo MP, Roberts JL, Jones DP, Liu KH, Taibl KR, Uppal K, Weitzmann MN, Pacifici R, Drissi H, Ziegler TR, Alvarez JA. Metabolomic Associations with Serum Bone Turnover Markers. Nutrients 2020; 12:nu12103161. [PMID: 33081124 PMCID: PMC7602719 DOI: 10.3390/nu12103161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/21/2022] Open
Abstract
Bone is a dynamic tissue that is in a constant state of remodeling. Bone turnover markers (BTMs), procollagen type I N-terminal propeptide (P1NP) and C-terminal telopeptides of type I collagen (CTX), provide sensitive measures of bone formation and resorption, respectively. This study used ultra-high-resolution metabolomics (HRM) to determine plasma metabolic pathways and targeted metabolites related to the markers of bone resorption and formation in adults. This cross-sectional clinical study included 34 adults (19 females, mean 27.8 years), without reported illnesses, recruited from a US metropolitan area. Serum BTM levels were quantified by an ELISA. Plasma HRM utilized dual-column liquid chromatography and mass spectrometry to identify metabolites and metabolic pathways associated with BTMs. Metabolites significantly associated with P1NP (p < 0.05) were significantly enriched in pathways linked to the TCA cycle, pyruvate metabolism, and metabolism of B vitamins important for energy production (e.g., niacin, thiamin). Other nutrition-related metabolic pathways associated with P1NP were amino acid (proline, arginine, glutamate) and vitamin C metabolism, which are important for collagen formation. Metabolites associated with CTX levels (p < 0.05) were enriched within lipid and fatty acid beta-oxidation metabolic pathways, as well as fat-soluble micronutrient pathways including, vitamin D metabolism, vitamin E metabolism, and bile acid biosynthesis. P1NP and CTX were significantly related to microbiome-related metabolites (p < 0.05). Macronutrient-related pathways including lipid, carbohydrate, and amino acid metabolism, as well as several gut microbiome-derived metabolites were significantly related to BTMs. Future research should compare metabolism BTMs relationships reported here to aging and clinical populations to inform targeted therapeutic interventions.
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Affiliation(s)
- Moriah P. Bellissimo
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
- Emory Center for Clinical and Molecular Nutrition, Emory University, Atlanta, GA 30322, USA;
- Correspondence:
| | - Joseph L. Roberts
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA 30322, USA; (J.L.R.); (H.D.)
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033, USA
| | - Dean P. Jones
- Emory Center for Clinical and Molecular Nutrition, Emory University, Atlanta, GA 30322, USA;
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.H.L.); (K.U.)
| | - Ken H. Liu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.H.L.); (K.U.)
| | - Kaitlin R. Taibl
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
| | - Karan Uppal
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.H.L.); (K.U.)
| | - M. Neale Weitzmann
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033, USA
- Emory Microbiome Research Center, Emory University, Atlanta, GA 30322, USA
| | - Roberto Pacifici
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
- Emory Microbiome Research Center, Emory University, Atlanta, GA 30322, USA
| | - Hicham Drissi
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA 30322, USA; (J.L.R.); (H.D.)
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033, USA
| | - Thomas R. Ziegler
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
- Emory Center for Clinical and Molecular Nutrition, Emory University, Atlanta, GA 30322, USA;
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033, USA
- Emory Microbiome Research Center, Emory University, Atlanta, GA 30322, USA
| | - Jessica A. Alvarez
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (K.R.T.); (M.N.W.); (R.P.); (T.R.Z.); (J.A.A.)
- Emory Center for Clinical and Molecular Nutrition, Emory University, Atlanta, GA 30322, USA;
- Emory Microbiome Research Center, Emory University, Atlanta, GA 30322, USA
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Olson KR, Briggs A, Devireddy M, Xian M, Gao Y. Are the beneficial effects of 'antioxidant' lipoic acid mediated through metabolism of reactive sulfur species? Free Radic Biol Med 2020; 146:139-149. [PMID: 31676393 DOI: 10.1016/j.freeradbiomed.2019.10.410] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/08/2019] [Accepted: 10/21/2019] [Indexed: 12/28/2022]
Abstract
The health benefits of lipoic acid (LA) are generally attributed to mitigating the harmful effects of reactive oxygen species (ROS). ROS are chemically similar to reactive sulfur species (RSS) and signal through identical mechanisms. Here we examined the effects of LA on RSS in HEK293 cells using H2S and polysulfide (PS) specific fluorophores, AzMC and SSP4. We show that LA concentration-dependently increased both H2S and PS. Physioxia (5% O2) augmented the effects of LA on H2S production but decreased PS production. Thiosulfate, a known substrate for reduced LA, and an intermediate in the catabolism of H2S enhanced the effects of LA on H2S and PS production. Inhibiting peroxiredoxins with conoidin A and gluraredoxins with tiopronin augmented the effects of LA on PS and H2S, respectively while decreasing glutathione with buthionine-sulfoximine (BSO) or diethyl maleate (DEM) decreased the stimulatory effect of LA on H2S production but augmented LA's effect on PS. Aminooxyacetate (AOA) and propargylglycine (PPG), inhibitors of H2S production from cysteine partially inhibited LA augmentation of H2S production and further decreased the LA effect when applied concurrently with BSO and DEM. The selective and cell-permeable H2S scavenger, SS20, inhibited the effects of LA on cellular H2S. Estimates of single-cell H2S production suggest that 0.1-0.2% of O2 consumption is used to metabolize H2S and these requirements may increase to 1-2% with 1 mM LA. Collectively, these results suggest that LA rescues H2S from irreversible oxidation and that the effects of LA on RSS directly confer antioxidant, anti-inflammatory and cytoprotective responses. They also suggest that TS may be an effective supplement to increase the efficacy of LA in clinical settings.
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Affiliation(s)
- Kenneth R Olson
- Indiana University School of Medicine, South Bend Center, South Bend, IN, 46617, USA; Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA.
| | - Austin Briggs
- Indiana University School of Medicine, South Bend Center, South Bend, IN, 46617, USA
| | - Monesh Devireddy
- Indiana University School of Medicine, South Bend Center, South Bend, IN, 46617, USA
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, WA, 99164, USA
| | - Yan Gao
- Indiana University School of Medicine, South Bend Center, South Bend, IN, 46617, USA
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Mitochondrial Dysfunction and Alpha-Lipoic Acid: Beneficial or Harmful in Alzheimer's Disease? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8409329. [PMID: 31885820 PMCID: PMC6914903 DOI: 10.1155/2019/8409329] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/30/2019] [Indexed: 12/31/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterised by impairments in the cognitive domains associated with orientation, recording, and memory. This pathology results from an abnormal deposition of the β-amyloid (Aβ) peptide and the intracellular accumulation of neurofibrillary tangles. Mitochondrial dysfunctions play an important role in the pathogenesis of AD, due to disturbances in the bioenergetic properties of cells. To date, the usual therapeutic drugs are limited because of the diversity of cellular routes in AD and the toxic potential of these agents. In this context, alpha-lipoic acid (α-LA) is a well-known fatty acid used as a supplement in several health conditions and diseases, such as periphery neuropathies and neurodegenerative disorders. It is produced in several cell types, eukaryotes, and prokaryotes, showing antioxidant and anti-inflammatory properties. α-LA acts as an enzymatic cofactor able to regulate metabolism, energy production, and mitochondrial biogenesis. In addition, the antioxidant capacity of α-LA is associated with two thiol groups that can be oxidised or reduced, prevent excess free radical formation, and act on improvement of mitochondrial performance. Moreover, α-LA has mechanisms of epigenetic regulation in genes related to the expression of various inflammatory mediators, such PGE2, COX-2, iNOS, TNF-α, IL-1β, and IL-6. Regarding the pharmacokinetic profile, α-LA has rapid uptake and low bioavailability and the metabolism is primarily hepatic. However, α-LA has low risk in prolonged use, although its therapeutic potential, interactions with other substances, and adverse reactions have not been well established in clinical trials with populations at higher risk for diseases of aging. Thus, this review aimed to describe the pharmacokinetic profile, bioavailability, therapeutic efficacy, safety, and effects of combined use with centrally acting drugs, as well as report in vitro and in vivo studies that demonstrate the mitochondrial mechanisms of α-LA involved in AD protection.
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Markiewicz-Górka I, Pawlas K, Jaremków A, Januszewska L, Pawłowski P, Pawlas N. Alleviating Effect of α-Lipoic Acid and Magnesium on Cadmium-Induced Inflammatory Processes, Oxidative Stress and Bone Metabolism Disorders in Wistar Rats. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E4483. [PMID: 31739465 PMCID: PMC6888481 DOI: 10.3390/ijerph16224483] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 11/01/2019] [Accepted: 11/11/2019] [Indexed: 12/12/2022]
Abstract
Cadmium exposure contributes to internal organ dysfunction and the development of chronic diseases. The aim of the study was to assess the alleviating effect of α-lipoic acid and/or magnesium on cadmium-induced oxidative stress and disorders in bone metabolism, kidney and liver function, and hematological and biochemical parameters changes. Male rats were exposed to cadmium (30 mg Cd/kg of feed) for three months. Some animals exposed to Cd were supplemented with magnesium (150 mg Mg/kg of feed) and/or with α-lipoic acid (100 mg/kg body weight, four times a week). Cd intake inhibited body weight gain and lowered hemoglobin concentration, whereas it increased the activities of liver enzymes, as well as the level of oxidative stress, CTX-1 (C-terminal telopeptide of type I collagen, bone resorption marker), and CRP (C-reactive protein, marker of inflammation); it decreased vitamin D3, GSH (reduced glutathione), and the serum urea nitrogen/creatinine index. Mg and/or α-lipoic acid supplementation increased the antioxidant potential, and partially normalized the studied biochemical parameters. The obtained results show that both magnesium and α-lipoic acid decrease oxidative stress and the level of inflammatory marker, as well as normalize bone metabolism and liver and kidney function. Combined intake of α-lipoic acid and magnesium results in reinforcement of the protective effect; especially, it increases antioxidant defense.
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Affiliation(s)
- Iwona Markiewicz-Górka
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, Wroclaw, 50-345, Poland; (K.P.); (A.J.); (L.J.)
| | - Krystyna Pawlas
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, Wroclaw, 50-345, Poland; (K.P.); (A.J.); (L.J.)
| | - Aleksandra Jaremków
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, Wroclaw, 50-345, Poland; (K.P.); (A.J.); (L.J.)
| | - Lidia Januszewska
- Department of Hygiene, Wroclaw Medical University, Mikulicza-Radeckiego 7, Wroclaw, 50-345, Poland; (K.P.); (A.J.); (L.J.)
| | - Paweł Pawłowski
- Specialist Hospital dr Alfred Sokołowski, Sokołowskiego 4, Wałbrzych 58-309, Poland;
| | - Natalia Pawlas
- Department of Pharmacology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Jordana 38, Zabrze 41-808, Poland;
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Zhan J, Jiang Y, Zhu N, Fang W, Wang G. Administration of alpha-lipoic acid could maintain bone mass and bone strength in senile female rats with alcohol consumption. Z Gerontol Geriatr 2019; 53:679-686. [PMID: 31602508 DOI: 10.1007/s00391-019-01630-3] [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: 02/05/2019] [Accepted: 09/17/2019] [Indexed: 10/25/2022]
Abstract
Previous studies have demonstrated the damaging effect of alcohol (ALH) consumption on bone tissue and bone metabolism. Alpha-lipoic acid (ALA) promotes osteoblast proliferation and inhibits osteoclast proliferation, and positively affects bone regeneration; however, reports about effects of ALA on bone loss for aged female rats with ALH consumption are limited. This study was designed to investigate the impact of treatment with ALA on bone loss for aged female rats with ALH consumption. In this study 30 female Sprague-Dawley rats (22 months old), weighing approximately 520 g, were incorporated. The animals were randomly divided into three groups: group CON, group ALH and group ALH + ALA and received saline, ALH, ALH plus ALA treatment until death at 16 weeks, respectively. The results of maintaining bone mass and bone strength in senile female rats with ALH consumption were evaluated by histology, microcomputerized tomography, gene expression analysis and biomechanical tests. Results from this study indicated that ALH + ALA had stronger effects on the prevention and treatment of osteoporosis in senile female rats with ALH consumption. The ALH + ALA produced stronger effects on the bone volume ratio (BV/TV), trabecular thickness (Tb.Th), trabecular number (Tb.N) and trabecular separation (Tb.Sp), BMD and strength of distal femurs, and regulation of osteogenesis and bone resorption-related gene expression. These results seem to indicate that ALA intervention prevents bone loss in senile female rats with ALH consumption.
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Affiliation(s)
- Junfeng Zhan
- Department of orthopaedics Surgery, The Second Hospital of Anhui Medical University, Hefei, China
| | - Ya Jiang
- Department of Orthopaedics, Hefei Third People's Hospital, Hefei, China
| | - Nan Zhu
- Department of orthopaedics Surgery, The Second Hospital of Anhui Medical University, Hefei, China
| | - Wang Fang
- Department of orthopaedics Surgery, The Second Hospital of Anhui Medical University, Hefei, China
| | - Gang Wang
- Department of orthopaedics Surgery, Nanfang Hospital Southern Medical University, Guangzhou, China.
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Abuyassin B, Badran M, Ayas NT, Laher I. The antioxidant α-lipoic acid attenuates intermittent hypoxia-related renal injury in a mouse model of sleep apnea. Sleep 2019; 42:5382296. [DOI: 10.1093/sleep/zsz066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/08/2019] [Indexed: 12/25/2022] Open
Affiliation(s)
- Bisher Abuyassin
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mohammad Badran
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Najib T Ayas
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ismail Laher
- Departments of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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Torres MJ, Fierro A, Pessoa-Mahana CD, Romero-Parra J, Cabrera G, Faúndez M. Effect of alpha lipoic acid on leukotriene A 4 hydrolase. Eur J Pharmacol 2017; 799:41-47. [PMID: 28132911 DOI: 10.1016/j.ejphar.2017.01.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 01/25/2017] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
Abstract
Leukotriene A4 hydrolase is a soluble enzyme with epoxide hydrolase and aminopeptidase activities catalysing the conversion of leukotriene A4 to leukotriene B4 and the hydrolysis of the peptide proline-glycine-proline. Imbalances in leukotriene B4 synthesis are related to several pathologic conditions. Currently there are no available drugs capable to modulate the synthesis of leukotriene B4 or to block its receptors. Here we show the inhibitory profile of alpha lipoic acid on the activity of leukotriene A4 Hydrolase. Alpha lipoic acid inhibited both activities of the enzyme at concentrations lower than 10μM. The 5-lipoxygenase inhibitor zileuton, or the 5-lipoxygenase activating protein inhibitor MK-886, were unable to inhibit the activity of the enzyme. Acute promyelocytic leukaemia HL-60 cells were differentiated to leukotriene A4 hydrolase expressing neutrophil-like cells. Alpha lipoic acid inhibited the aminopeptidase activity of the cytosolic fraction from neutrophil-like cells but had no effect on the cytosolic fraction from undifferentiated cells. Docking and molecular dynamic approximations revealed that alpha lipoic acid participates in electrostatic interactions with K-565 and R-563, which are key residues for the carboxylate group recognition of endogenous substrates by the enzyme. Alpha lipoic acid is a compound widely used in clinical practice, most of its therapeutic effects are associated with its antioxidants properties, however, antioxidant effect alone is unable to explain all clinical effects observed with alpha lipoic acid. Our results invite to evaluate the significance of the inhibitory effect of alpha lipoic acid on the catalytic activity of leukotriene A4 hydrolase using in vivo models.
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Affiliation(s)
- María José Torres
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile; Laboratorio de Simulación Molecular, Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Angélica Fierro
- Laboratorio de Simulación Molecular, Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - C David Pessoa-Mahana
- Laboratorio de Diseño y Síntesis de Ligandos Cannabinoides, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Javier Romero-Parra
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile; Laboratorio de Diseño y Síntesis de Ligandos Cannabinoides, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile
| | - Gonzalo Cabrera
- Laboratorio de Biología Celular, Programa de Biología Celular y Molecular, Instituto de Ciencias Biomedicas, Facultad de Medicina, Universidad de Chile, Chile
| | - Mario Faúndez
- Laboratorio de Farmacología y Toxicología Molecular, Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Chile.
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Subramanian VS, Constantinescu AR, Benke PJ, Said HM. Mutations in SLC5A6 associated with brain, immune, bone, and intestinal dysfunction in a young child. Hum Genet 2016; 136:253-261. [PMID: 27904971 DOI: 10.1007/s00439-016-1751-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/20/2016] [Indexed: 01/13/2023]
Abstract
The human sodium-dependent multivitamin transporter (hSMVT) is a product of the SLC5A6 gene and mediates biotin, pantothenic acid, and lipoate uptake in a variety of cellular systems. We report here the identification of mutations R94X, a premature termination, and R123L, a dysfunctional amino acid change, both in exon 3 of the SLC5A6 gene in a child using whole genome-scanning. At 15 months of age, the child showed failure to thrive, microcephaly and brain changes on MRI, cerebral palsy and developmental delay, variable immunodeficiency, and severe gastro-esophageal reflux requiring a gastrostomy tube/fundoplication, osteoporosis, and pathologic bone fractures. After identification of the SLC5A6 mutations, he responded clinically to supplemental administration of excess biotin, pantothenic acid, and lipoate with improvement in clinical findings. Functionality of the two mutants was examined by 3H-biotin uptake assay following expression of the mutants in human-derived intestinal HuTu-80 and brain U87 cells. The results showed severe impairment in biotin uptake in cells expressing the mutants compared to those expressing wild-type hSMVT. Live cell confocal imaging of cells expressing the mutants showed the R94X mutant to be poorly tolerated and localized in the cytoplasm, while the R123L mutant was predominantly retained in the endoplasmic reticulum. This is the first reporting of mutations in the SLC5A6 gene in man, and suggests that this gene is important for brain development and a wide variety of clinical functions.
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Affiliation(s)
- Veedamali S Subramanian
- Departments of Medicine and Physiology/Biophysics, University of California, Irvine, CA 92697.,Department of Veterans Affairs Medical Center, Long Beach, CA 90822
| | - Alexandru R Constantinescu
- Divisions of Nephrology, Joe DiMaggio Children's Hospital and the Charles E Schmidt College of Medicine, Hollywood, FL 33021
| | - Paul J Benke
- Divisions of Genetics, Joe DiMaggio Children's Hospital and the Charles E Schmidt College of Medicine, Hollywood, FL 33021
| | - Hamid M Said
- Departments of Medicine and Physiology/Biophysics, University of California, Irvine, CA 92697.,Department of Veterans Affairs Medical Center, Long Beach, CA 90822
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