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Paul BD, Pieper AA. Neuroprotective signaling by hydrogen sulfide and its dysregulation in Alzheimer's disease. Curr Opin Chem Biol 2024; 82:102511. [PMID: 39142018 DOI: 10.1016/j.cbpa.2024.102511] [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: 06/02/2024] [Revised: 07/04/2024] [Accepted: 07/21/2024] [Indexed: 08/16/2024]
Abstract
The ancient messenger molecule hydrogen sulfide (H2S) modulates myriad signaling cascades and has been conserved across evolutionary boundaries. Although traditionally known as an environmental toxin, H2S is also synthesized endogenously to exert modulatory and homeostatic effects in a broad array of physiologic functions. Notably, H2S levels are tightly physiologically regulated, as both its excess and paucity can be toxic. Accumulating evidence has revealed pivotal roles for H2S in neuroprotection and normal cognitive function, and H2S homeostasis is dysregulated in neurodegenerative conditions. Here, we review the normal neuroprotective roles of H2S that go awry in Alzheimer's disease, the most common form of neurodegenerative disease.
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Affiliation(s)
- Bindu D Paul
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Lieber Institute for Brain Development, Baltimore, MD, USA.
| | - Andrew A Pieper
- Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA; Department of Neurosciences, Case Western Reserve University, School of Medicine, Cleveland, OH, USA; Department of Pathology, Case Western Reserve University, School of Medicine, Cleveland, OH, USA; Institute for Transformative Molecular Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA; Brain Health Medicines Center, Harrington Discovery Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA; Geriatric Psychiatry, GRECC, Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA.
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2
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Kaur B, Kumar N, Kumari L, Gupta AP, Sharma R, Chopra K, Saxena S. In-vitro antioxidant and anti-inflammatory potential along with p.o. pharmacokinetic profile of key bioactive phytocompounds of Snow Mountain Garlic: a comparative analysis vis-à-vis normal garlic. Inflammopharmacology 2024; 32:1871-1886. [PMID: 38564091 DOI: 10.1007/s10787-024-01435-w] [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: 08/28/2023] [Accepted: 12/03/2023] [Indexed: 04/04/2024]
Abstract
Snow mountain garlic (SMG) is a trans-Himalayan medicinal plant used in the traditional medicine system for several ailments, including inflammatory arthritis. Research studies are insufficient to validate its folk medicinal applications. In the present study, the comparative abundance of its key bioactive phytocompounds, viz., S-allyl-L-cysteine (SAC), alliin, and S-methyl-L-cysteine (SMC) against normal garlic were assessed using the LC-MS/MS-MRM method. In addition, the study also explored the antioxidant and anti-inflammatory potency of crude extract of SMG and purified signature phytocompounds (i.e., SMC, SAC, and alliin) in comparison with normal garlic and dexamethasone in LPS-stimulated RAW264.7 macrophage cells. The LC-MS/MS-MRM study revealed significant differences among SMG and normal garlic, viz., alliin 22.8-fold higher in SMG, and SMC could be detected only in SMG. In the bioassays, SMG extract and purified signature phytocompounds significantly downregulated oxidative damage in activated macrophages, boosting endogenous antioxidants' activity. SMG extract-treated macrophages significantly suppressed NF-κB expression and related inflammatory indicators such as cytokines, COX-2, iNOS, and NO. Notably, the observed anti-inflammatory and antioxidant bioactivities of SMG extract were comparable to signature phytocompounds and dexamethasone. In addition, SAC being uniformly found in SMG and normal garlic, its comparative pharmacokinetics was studied to validate the pharmacodynamic superiority of SMG over normal garlic. Significantly higher plasma concentrations (Cmax), half-life (t1/2), and area under curve (AUC) of SAC following SMG extract administration than normal garlic validated the proposed hypothesis. Thus, the abundance of bioactive phytocompounds and their better pharmacokinetics in SMG extract might be underlying its medicinal merits over normal garlic.
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Affiliation(s)
- Bhupinder Kaur
- Medicinal and Aromatic Plant Division, Defence Institute of High Altitude Research (DIHAR), Defence R & D Organization (DRDO), Ministry of Defence, C/O 56 APO, Leh, Ladakh, 901205, India
- Faculty of Pharmaceutical Sciences, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Nitish Kumar
- Medicinal and Aromatic Plant Division, Defence Institute of High Altitude Research (DIHAR), Defence R & D Organization (DRDO), Ministry of Defence, C/O 56 APO, Leh, Ladakh, 901205, India
| | - Laxmi Kumari
- Faculty of Pharmaceutical Sciences, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Ajai P Gupta
- Director, Quality Assurance, Food Safety and Standards Authority of India, Ministry of Health and Family Welfare, New Delhi, 110002, India
| | - Rajni Sharma
- Medicinal and Aromatic Plant Division, Defence Institute of High Altitude Research (DIHAR), Defence R & D Organization (DRDO), Ministry of Defence, C/O 56 APO, Leh, Ladakh, 901205, India
| | - Kanwaljit Chopra
- Faculty of Pharmaceutical Sciences, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Shweta Saxena
- Medicinal and Aromatic Plant Division, Defence Institute of High Altitude Research (DIHAR), Defence R & D Organization (DRDO), Ministry of Defence, C/O 56 APO, Leh, Ladakh, 901205, India.
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Bautista-Perez SM, Silva-Islas CA, Sandoval-Marquez OU, Toledo-Toledo J, Bello-Martínez JM, Barrera-Oviedo D, Maldonado PD. Antioxidant and Anti-Inflammatory Effects of Garlic in Ischemic Stroke: Proposal of a New Mechanism of Protection through Regulation of Neuroplasticity. Antioxidants (Basel) 2023; 12:2126. [PMID: 38136245 PMCID: PMC10740829 DOI: 10.3390/antiox12122126] [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: 10/26/2023] [Revised: 12/02/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Stroke represents one of the main causes of death and disability in the world; despite this, pharmacological therapies against stroke remain insufficient. Ischemic stroke is the leading etiology of stroke. Different molecular mechanisms, such as excitotoxicity, oxidative stress, and inflammation, participate in cell death and tissue damage. At a preclinical level, different garlic compounds have been evaluated against these mechanisms. Additionally, there is evidence supporting the participation of garlic compounds in other mechanisms that contribute to brain tissue recovery, such as neuroplasticity. After ischemia, neuroplasticity is activated to recover cognitive and motor function. Some garlic-derived compounds and preparations have shown the ability to promote neuroplasticity under physiological conditions and, more importantly, in cerebral damage models. This work describes damage/repair mechanisms and the importance of garlic as a source of antioxidant and anti-inflammatory agents against damage. Moreover, we examine the less-explored neurotrophic properties of garlic, culminating in proposals and observations based on our review of the available information. The aim of the present study is to propose that garlic compounds and preparations could contribute to the treatment of ischemic stroke through their neurotrophic effects.
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Affiliation(s)
- Sandra Monserrat Bautista-Perez
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (S.M.B.-P.); (J.M.B.-M.); (D.B.-O.)
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City 14269, Mexico; (C.A.S.-I.); (O.U.S.-M.); (J.T.-T.)
| | - Carlos Alfredo Silva-Islas
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City 14269, Mexico; (C.A.S.-I.); (O.U.S.-M.); (J.T.-T.)
| | - Oscar Uriel Sandoval-Marquez
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City 14269, Mexico; (C.A.S.-I.); (O.U.S.-M.); (J.T.-T.)
| | - Jesús Toledo-Toledo
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City 14269, Mexico; (C.A.S.-I.); (O.U.S.-M.); (J.T.-T.)
- Servicio de Cirugía General, Hospital General de Zona #30, Instituto Mexicano del Seguro Social, Mexico City 08300, Mexico
| | - José Manuel Bello-Martínez
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (S.M.B.-P.); (J.M.B.-M.); (D.B.-O.)
- Departamento Cirugía General, Hospital Central Militar, Mexico City 11600, Mexico
| | - Diana Barrera-Oviedo
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (S.M.B.-P.); (J.M.B.-M.); (D.B.-O.)
| | - Perla D. Maldonado
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (S.M.B.-P.); (J.M.B.-M.); (D.B.-O.)
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City 14269, Mexico; (C.A.S.-I.); (O.U.S.-M.); (J.T.-T.)
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Colorectal Cancer Chemoprevention by S-Allyl Cysteine–Caffeic Acid Hybrids: In Vitro Biological Activity and In Silico Studies. Sci Pharm 2022. [DOI: 10.3390/scipharm90030040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Conventional chemotherapy for colorectal cancer (CRC) gives only a small increase in patient survival, since it is often diagnosed at late stages, when the tumor has disseminated to other organs. Moreover, it is common to observe that malignant cells may acquire resistance to conventional chemotherapies through different mechanisms, including reducing drug activation or accumulation (by enhancing efflux), inducing alterations in molecular targets, and inhibiting the DNA damage response, among other strategies. Considering these facts, the discovery of new molecules with therapeutic potential has become an invaluable tool in chemoprevention. In this context, we previously evaluated two hybrids (SAC-CAFA-MET and SAC-CAFA-PENT) that exhibited selective cytotoxicity against SW480 cells, with better results than the conventional chemotherapeutic agent (5-fluorouracil; 5-FU). Here, we investigated the possible mechanisms of these molecules in greater depth, to identify whether they could be valuable therapeutic scaffolds in the search for new molecules with chemopreventive potential for the treatment of CRC. Both compounds reduced ROS formation, which could be related to antioxidant effects. Further evaluations showed that SAC-CAFA-MET induces cell death independent of caspases and the tumor-suppressor protein p53, but probably mediated by the negative regulation of the pro-apoptotic Bcl-2. In addition, the lack of activation of caspase-8 and the positive regulation of caspase-3 induced by SAC-CAFA-PENT suggest that this compound acts through an apoptotic mechanism, probably initiated by intrinsic pathways. Furthermore, the downregulation of IL-6 by SAC-CAFA-PENT suggests that it also induces a significant anti-inflammatory process. In addition, docking studies would suggest caspase-3 modulation as the primary mechanism by which SAC-CAFA-PENT elicits apoptosis in SW480human colorectal adenocarcinoma cells. Meanwhile, density functional theory (DFT) calculations suggest that both hybrids would produce effects in the modulation of ROS in SW480 cells via the hydrogen atom transfer (HAT) pathway. The present work notes that SAC-CAFA-MET and SAC-CAFA-PENT could be potential candidates for further investigations in the search for potential chemopreventive agents.
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Ma G, Pan Z, Kong L, Du G. Neuroinflammation in hemorrhagic transformation after tissue plasminogen activator thrombolysis: Potential mechanisms, targets, therapeutic drugs and biomarkers. Int Immunopharmacol 2020; 90:107216. [PMID: 33296780 DOI: 10.1016/j.intimp.2020.107216] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/18/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022]
Abstract
Hemorrhagic transformation (HT) is a common and serious complication following ischemic stroke, especially after tissue plasminogen activator (t-PA) thrombolysis, which is associated with increased mortality and disability. Due to the unknown mechanisms and targets of HT, there are no effective therapeutic drugs to decrease the incidence of HT. In recent years, many studies have found that neuroinflammation is closely related to the occurrence and development of HT after t-PA thrombolysis, including glial cell activation in the brain, peripheral inflammatory cell infiltration and the release of inflammatory factors, involving inflammation-related targets such as NF-κB, MAPK, HMGB1, TLR4 and NLRP3. Some drugs with anti-inflammatory activity have been shown to protect the BBB and reduce the risk of HT in preclinical experiments and clinical trials, including minocycline, fingolimod, tacrolimus, statins and some natural products. In addition, the changes in MMP-9, VAP-1, NLR, sICAM-1 and other inflammatory factors are closely related to the occurrence of HT, which may be potential biomarkers for the diagnosis and prognosis of HT. In this review, we summarize the potential inflammation-related mechanisms, targets, therapeutic drugs, and biomarkers associated with HT after t-PA thrombolysis and discuss the relationship between neuroinflammation and HT, which provides a reference for research on the mechanisms, prevention and treatment drugs, diagnosis and prognosis of HT.
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Affiliation(s)
- Guodong Ma
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zirong Pan
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Linglei Kong
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Chen P, Hu M, Liu F, Yu H, Chen C. S-allyl-l-cysteine (SAC) protects hepatocytes from alcohol-induced apoptosis. FEBS Open Bio 2019; 9:1327-1336. [PMID: 31161729 PMCID: PMC6609569 DOI: 10.1002/2211-5463.12684] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 05/19/2019] [Accepted: 05/31/2019] [Indexed: 01/06/2023] Open
Abstract
Hepatocyte apoptosis is frequently observed in alcohol‐related liver disease (ARLD), which ranks among the 30 leading causes of death worldwide. In the current study, we explored the impact of S‐allyl‐l‐cysteine (SAC), an organosulfur component of garlic, on hepatocyte apoptosis induced by alcohol. Rat liver (BRL‐3A) cells were challenged by ethanol with or without SAC treatment. Cell death/viability, reactive oxygen species (ROS) generation, mitochondrial Cytochrome C release, and caspase 3 activity were then examined. We found that ethanol remarkably induced apoptosis of hepatocytes, while SAC treatment rescued ethanol‐induced hepatocyte injury, as demonstrated by cell counting kit‐8 (CCK8) assay, TUNEL assay, and annexin V/PI staining assay. Ethanol evoked ROS generation in BRL‐3A cells, and this was abated by SAC pretreatment, as indicated by 2′,7′‐dichlorofluorescin diacetate (DCFDA) staining assay. Moreover, ethanol suppressed cellular anti‐apoptotic protein B‐cell lymphoma‐2 (Bcl‐2) expression, increased pro‐apoptotic protein Bcl‐2‐associated X protein (Bax) expression, induced mitochondrial Cytochrome C release, and activated the caspase 3‐dependent apoptosis pathway in BRL‐3A cells. SAC was sufficient to abolish all these changes induced by ethanol, thereby revealing the molecular mechanisms underlying its protective effects. In conclusion, SAC protects hepatocytes from ethanol‐induced apoptosis and may be suitable for use as a novel anti‐apoptotic agent for treating ARLD.
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Affiliation(s)
- Peng Chen
- Department of Hepatopancreatobiliary Surgery, the Second Affiliated Hospital of Kunming Medical University, China
| | - Mingdao Hu
- Department of Hepatopancreatobiliary Surgery, the Second Affiliated Hospital of Kunming Medical University, China
| | - Feng Liu
- Department of Hepatopancreatobiliary Surgery, the Second Affiliated Hospital of Kunming Medical University, China
| | - Henghai Yu
- Department of Hepatopancreatobiliary Surgery, the Second Affiliated Hospital of Kunming Medical University, China
| | - Chen Chen
- Department of Ophthalmology, the Second People's Hospital of Yunnan Province, Kunming, China
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Chen H, Chen X, Luo Y, Shen J. Potential molecular targets of peroxynitrite in mediating blood–brain barrier damage and haemorrhagic transformation in acute ischaemic stroke with delayed tissue plasminogen activator treatment. Free Radic Res 2018; 52:1220-1239. [PMID: 30468092 DOI: 10.1080/10715762.2018.1521519] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hansen Chen
- School of Chinese Medicine, the University of Hong Kong, PR China
- Shenzhen Institute of Research and Innovation (HKU-SIRI), University of Hong Kong, Hong Kong, PR China
| | - Xi Chen
- Department of Core Facility, the People’s Hospital of Bao-an Shenzhen, Shenzhen, PR China
- The 8th People’s Hospital of Shenzhen, the Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, PR China
| | - Yunhao Luo
- School of Chinese Medicine, the University of Hong Kong, PR China
| | - Jiangang Shen
- School of Chinese Medicine, the University of Hong Kong, PR China
- Shenzhen Institute of Research and Innovation (HKU-SIRI), University of Hong Kong, Hong Kong, PR China
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Yang CT, Chen L, Xu S, Day JJ, Li X, Xian M. Recent Development of Hydrogen Sulfide Releasing/Stimulating Reagents and Their Potential Applications in Cancer and Glycometabolic Disorders. Front Pharmacol 2017; 8:664. [PMID: 29018341 PMCID: PMC5623001 DOI: 10.3389/fphar.2017.00664] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 09/06/2017] [Indexed: 12/24/2022] Open
Abstract
As an important endogenous gaseous signaling molecule, hydrogen sulfide (H2S) exerts various effects in the body. A variety of pathological changes, such as cancer, glycometabolic disorders, and diabetes, are associated with altered endogenous levels of H2S, especially decreased. Therefore, the supplement of H2S is of great significance for the treatment of diseases containing the above pathological changes. At present, many efforts have been made to increase the in vivo levels of H2S by administration of gaseous H2S, simple inorganic sulfide salts, sophisticated synthetic slow-releasing controllable H2S donors or materials, and using H2S stimulating agents. In this article, we reviewed the recent development of H2S releasing/stimulating reagents and their potential applications in two common pathological processes including cancer and glycometabolic disorders.
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Affiliation(s)
- Chun-Tao Yang
- Affiliated Cancer Hospital and Institute, Key Laboratory of Protein Modification and Degradation in School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.,Department of Chemistry, Washington State University, Pullman, WA, United States
| | - Li Chen
- Affiliated Cancer Hospital and Institute, Key Laboratory of Protein Modification and Degradation in School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Shi Xu
- Department of Chemistry, Washington State University, Pullman, WA, United States
| | - Jacob J Day
- Department of Chemistry, Washington State University, Pullman, WA, United States
| | - Xiang Li
- Affiliated Cancer Hospital and Institute, Key Laboratory of Protein Modification and Degradation in School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, WA, United States
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Kattaia AAA, Abd El-Baset SA, Mohamed EM, Abdul-Maksou RS, Elfakharany YM. Molecular mechanisms underlying histological and biochemical changes induced by nitrate in rat liver and the efficacy of S-Allylcysteine. Ultrastruct Pathol 2016; 41:10-22. [DOI: 10.1080/01913123.2016.1252821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Asmaa A. A. Kattaia
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Samia A. Abd El-Baset
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Eman M. Mohamed
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | | | - Yara M. Elfakharany
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Colín-González AL, Ali SF, Túnez I, Santamaría A. On the antioxidant, neuroprotective and anti-inflammatory properties of S-allyl cysteine: An update. Neurochem Int 2015; 89:83-91. [PMID: 26122973 DOI: 10.1016/j.neuint.2015.06.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 06/11/2015] [Accepted: 06/15/2015] [Indexed: 12/25/2022]
Abstract
Therapeutic approaches based on isolated compounds obtained from natural products to handle central and peripheral disorders involving oxidative stress and inflammation are more common nowadays. The validation of nutraceutics vs. pharmaceutics as tools to induce preventive and protective profiles in human health alterations is still far of complete acceptance, but the basis to start more solid experimental and clinical protocols with natural products has already begun. S-allyl cysteine (SAC) is a promising garlic-derived organosulfur compound exhibiting a considerable number of positive actions in cell models and living systems. An update, in the form of review, is needed from time to time to get access to the state-of-the-art on this topic. In this review we visited recent and refreshing evidence of new already proven and potential targets to explain the benefits of using SAC against toxic and pathological conditions. The broad spectrum of protective actions covered by this molecule comprises antioxidant, redox modulatory and anti-inflammatory activities, accompanied by anti-apoptotic, pro-energetic and signaling capacities. Herein, we detail the evidence on these aspects to provide the reader a more complete overview on the promising aspects of SAC in research.
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Affiliation(s)
- Ana Laura Colín-González
- Laboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, SSA, Mexico City, Mexico
| | - Syed F Ali
- Neurochemistry Laboratory, Division of Neurotoxicology, National Center for Toxicological Research/FDA, Jefferson, AR, USA.
| | - Isaac Túnez
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofia/Universidad de Córdoba, Cordoba, Spain; Red Temática de Investigación Cooperativa en Envejecimiento y Fragilidad (RETICEF), Spain
| | - Abel Santamaría
- Laboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, SSA, Mexico City, Mexico.
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Palencia G, Medrano JÁN, Ortiz-Plata A, Farfán DJ, Sotelo J, Sánchez A, Trejo-Solís C. Anti-apoptotic, anti-oxidant, and anti-inflammatory effects of thalidomide on cerebral ischemia/reperfusion injury in rats. J Neurol Sci 2015; 351:78-87. [DOI: 10.1016/j.jns.2015.02.043] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/06/2015] [Accepted: 02/24/2015] [Indexed: 11/28/2022]
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Shi H, Jing X, Wei X, Perez RG, Ren M, Zhang X, Lou H. S
-allyl cysteine activates the Nrf2-dependent antioxidant response and protects neurons against ischemic injury in vitro
and in vivo. J Neurochem 2015; 133:298-308. [DOI: 10.1111/jnc.12986] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/10/2014] [Accepted: 10/29/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Huanying Shi
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
| | - Xu Jing
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
| | - Xinbing Wei
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
| | - Ruth G. Perez
- Texas Tech University Health Science Center; El Paso; Paul L. Foster School of Medicine; El Paso Texas USA
| | - Manru Ren
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
| | - Xiumei Zhang
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
| | - Haiyan Lou
- Department of Pharmacology; School of Medicine; Shandong University; Jinan China
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Zhao Y, Pacheco A, Xian M. Medicinal Chemistry: Insights into the Development of Novel H2S Donors. Handb Exp Pharmacol 2015; 230:365-388. [PMID: 26162844 DOI: 10.1007/978-3-319-18144-8_18] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hydrogen sulfide (H2S) was traditionally considered as a toxic gas. However, recent studies have demonstrated H2S is an endogenously generated gaseous signaling molecule (gasotransmitter) with importance on par with that of two other well-known endogenous gasotransmitters, nitric oxide (NO) and carbon monoxide (CO). Although H2S's exact mechanisms of action are still under investigation, the production of endogenous H2S and the exogenous administration of H2S have been demonstrated to elicit a wide range of physiological responses including modulation of blood pressure and protection of ischemia reperfusion injury, exertion of anti-inflammatory effects, and reduction of metabolic rate. These results strongly suggest that modulation of H2S levels could have potential therapeutic values. In this regard, synthetic H2S-releasing agents (i.e., H2S donors) are not only important research tools, but also potential therapeutic agents. This chapter summarizes the knowledge of currently available H2S donors. Their preparation, H2S releasing mechanisms, and biological applications are discussed.
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Affiliation(s)
- Yu Zhao
- Department of Chemistry, Washington State University, Pullman, WA, 99164, USA
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14
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Lee HS, Lim WC, Choi JH, Yu HJ, Kim KH, Lee SH, Cho HY. Ameliorating Effects of Lactic Acid-fermented Garlic Extracts on Oleic Acid-induced Hepatic Steatosis. ACTA ACUST UNITED AC 2014. [DOI: 10.9721/kjfst.2014.46.6.762] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ahmad S, Elsherbiny NM, Haque R, Khan MB, Ishrat T, Shah ZA, Khan MM, Ali M, Jamal A, Katare DP, Liou GI, Bhatia K. Sesamin attenuates neurotoxicity in mouse model of ischemic brain stroke. Neurotoxicology 2014; 45:100-10. [PMID: 25316624 DOI: 10.1016/j.neuro.2014.10.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/02/2014] [Accepted: 10/02/2014] [Indexed: 11/30/2022]
Abstract
Stroke is a severe neurological disorder characterized by the abrupt loss of blood circulation into the brain resulting into wide ranging brain and behavior abnormalities. The present study was designed to evaluate molecular mechanism by which sesamin (SES) induces neuroprotection in mouse model of ischemic stroke. The results of this study demonstrate that SES treatment (30 mg/kg bwt) significantly reduced infarction volume, lipid per-oxidation, cleaved-caspase-3 activation, and increased GSH activity following MCAO in adult male mouse. SES treatment also diminished iNOS and COX-2 protein expression, and significantly restored SOD activity and protein expression level in the ischemic cortex of the MCAO animals. Furthermore, SES treatment also significantly reduced inflammatory and oxidative stress markers including Iba1, Nox-2, Cox-2, peroxynitrite compared to placebo MCAO animals. Superoxide radical production, as studied by DHE staining method, was also significantly reduced in the ischemic cortex of SES treated compared to placebo MCAO animals. Likewise, downstream effects of superoxide free radicals i.e. MAPK/ERK and P38 activation was also significantly attenuated in SES treated compared to placebo MCAO animals. In conclusion, these results suggest that SES induces significant neuroprotection, by ameliorating many signaling pathways activated/deactivated following cerebral ischemia in adult mouse.
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Affiliation(s)
- Saif Ahmad
- Department of Biological Sciences, Rabigh College of Science and Arts, King Abdulaziz University (Jeddah), P.O. Box 344, Rabigh 21911, Kingdom of Saudi Arabia.
| | - Nehal M Elsherbiny
- Department of Clinical Biochemistry, Mansoura University, Mansoura, Egypt
| | - Rizwanul Haque
- Centre for Biological Science (Biotechnology), Central University of Bihar, Patna, Bihar, India
| | | | - Tauheed Ishrat
- Department of Clinical and Administrative Pharmacy, University of Georgia, Augusta, GA, USA
| | - Zahoor A Shah
- Department of Medicinal and Biological Chemistry, The University of Toledo, Toledo, OH, USA
| | - Mohammad M Khan
- Department of Biochemistry, Faculty of Medicine, Zawia University, AZ-Zawia, Libya
| | - Mehboob Ali
- The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Arshad Jamal
- Department of Biological Sciences, Rabigh College of Science and Arts, King Abdulaziz University (Jeddah), P.O. Box 344, Rabigh 21911, Kingdom of Saudi Arabia
| | | | - Gregory I Liou
- Department of Ophthalmology, School of Medicine, Georgia Regents University, Augusta, GA, USA
| | - Kanchan Bhatia
- Department of Biological Sciences, Rabigh College of Science and Arts, King Abdulaziz University (Jeddah), P.O. Box 344, Rabigh 21911, Kingdom of Saudi Arabia.
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Chao HM, Chen IL, Liu JH. S-Allyl L-Cysteine Protects the Retina Against Kainate Excitotoxicity in the Rat. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2014; 42:693-708. [DOI: 10.1142/s0192415x14500451] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Excitotoxicity has been proposed to play a pivotal role in retinal ischemia. Retinal ischemia-associated ocular disorders are vision threatening. The aim was to also examine whether and how S-allyl L-cysteine (SAC) can protect the retina against kainate excitotoxicity. In vivo retinal excitotoxicity was induced by an intravitreous injection of 100 μM kainate into a Wistar rat eye for 1 day. The management and mechanisms involved in the processes were evaluated by electrophysiology, immunohistochemistry, histopathology, and various biochemical approaches. In the present study, the cultured retinal cells were shown to possess kainate receptors. The defined retinal excitotoxic changes were characterized by a decrease in electroretinogram (ERG) b-wave amplitudes, a loss of the fluorogold retrograde labeled retinal ganglion cells (RGCs), an increase in the apoptotic cells in the RGC layer, and an increase in vimentin or glial fibrillary acidic protein (GFAP) immunoreactivity, a marker for Müller cells. An up-regulation in the mRNA levels of inducible nitric oxide synthase (iNOS) and matrix metalloproteinases-9 (MMPs-9) was also detected in the retina subjected to kainate excitoxicity. Importantly, the excitotoxicity-induced alterations were significantly blunted when 100 μM SAC and/or the kainate receptor antagonist CNQX was applied. Conclusively, SAC would seem to protect the retina against kainate excitotoxicity via an inhibition of the up-regulation of iNOS and MMP-9 as well as a modulation of glial activation and apoptosis.
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Affiliation(s)
- Hsiao-Ming Chao
- Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan, R. O. C
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan, R.O.C
- Department of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan, R. O. C
| | - Ing-Ling Chen
- Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan, R. O. C
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan, R.O.C
- Department of Chinese Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan, R. O. C
| | - Jorn-Hon Liu
- Department of Ophthalmology, Cheng Hsin General Hospital, Taipei, Taiwan, R. O. C
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17
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Kim SR, Jung YR, An HJ, Kim DH, Jang EJ, Choi YJ, Moon KM, Park MH, Park CH, Chung KW, Bae HR, Choi YW, Kim ND, Chung HY. Anti-wrinkle and anti-inflammatory effects of active garlic components and the inhibition of MMPs via NF-κB signaling. PLoS One 2013; 8:e73877. [PMID: 24066081 PMCID: PMC3774756 DOI: 10.1371/journal.pone.0073877] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/23/2013] [Indexed: 12/04/2022] Open
Abstract
Skin aging is a multisystem degenerative process caused by several factors, such as, UV irradiation, stress, and smoke. Furthermore, wrinkle formation is a striking feature of photoaging and is associated with oxidative stress and inflammatory response. In the present study, we investigated whether caffeic acid, S-allyl cysteine, and uracil, which were isolated from garlic, modulate UVB-induced wrinkle formation and effect the expression of matrix-metalloproteinase (MMP) and NF-κB signaling. The results obtained showed that all three compounds significantly inhibited the degradation of type І procollagen and the expressions of MMPs in vivo and attenuated the histological collagen fiber disorder and oxidative stress in vivo. Furthermore, caffeic acid and S-allyl cysteine were found to decrease oxidative stress and inflammation by modulating the activities of NF-κB and AP-1, and uracil exhibited an indirect anti-oxidant effect by suppressing cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) expressions levels and downregulating transcriptional factors. These results suggest that the anti-wrinkle effects of caffeic acid, S-allyl cysteine, and uracil are due to anti-oxidant and/or anti-inflammatory effects. Summarizing, caffeic acid, S-allyl cysteine, and uracil inhibited UVB-induced wrinkle formation by modulating MMP via NF-κB signaling.
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Affiliation(s)
- So Ra Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Yu Ri Jung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Hye Jin An
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Dae Hyun Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Eun Ji Jang
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Yeon Ja Choi
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Kyoung Mi Moon
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Min Hi Park
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Chan Hum Park
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Ki Wung Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Ha Ram Bae
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Yung Whan Choi
- Department of Horticultural Bioscience, Pusan National University, Miryang, Republic of Korea
| | - Nam Deuk Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), College of Pharmacy, Pusan National University, Busan, Republic of Korea
- * E-mail:
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18
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Screening of various sources of phytochemicals for neuroprotective activity against oxygen-glucose deprivation in vitro. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s13765-013-3108-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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19
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Chang HJ, Kim JM, Lee JC, Kim WK, Chun HS. Protective effect of β-caryophyllene, a natural bicyclic sesquiterpene, against cerebral ischemic injury. J Med Food 2013; 16:471-80. [PMID: 23734999 DOI: 10.1089/jmf.2012.2283] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
β-Caryophyllene (trans-4,11,11-trimethyl-8-methylenebicyclo[7,2,0]undec-4-ene), found in various plants, is a natural bicyclic sesquiterpene with a low toxicity. Here, we show that a single intraperitoneal injection of β-caryophyllene (10 mg/kg) significantly reduced the cortical infarct volume by 67% when given immediately before middle cerebral artery occlusion (MCAO). Neurological deficits caused by MCAO were also significantly decreased by β-caryophyllene. β-Caryophyllene treatment of cortical cells exposed to oxygen-glucose deprivation revealed a significant protection in a dose-dependent manner. However, β-caryophyllene neither suppressed N-methyl-D-aspartate excitotoxicity in cultured cortical cells nor markedly decreased the oxidative stress measured in the cellular or acellular systems. By contrast, treatments with β-caryophyllene dose-dependently inhibited mRNA expression of inducible nitric oxide synthetase, interleukin (IL)-1β, IL-6, and cyclooxygenase 2 in C6 microglial cells, and decreased the level of nitric oxide and prostaglandin E₂ at a 100 μM concentration. All of these findings suggest that β-caryophyllene has a potent neuroprotective activity, and its neuroprotection may be partly related to the modulation of inflammatory mediators.
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Affiliation(s)
- Hyun-Joo Chang
- Korea Food Research Institute, Sungnam, Kyonggi-do, Republic of Korea
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20
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Hwang YP, Kim HG, Choi JH, Do MT, Chung YC, Jeong TC, Jeong HG. S-allyl cysteine attenuates free fatty acid-induced lipogenesis in human HepG2 cells through activation of the AMP-activated protein kinase-dependent pathway. J Nutr Biochem 2013; 24:1469-78. [PMID: 23465592 DOI: 10.1016/j.jnutbio.2012.12.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 12/03/2012] [Accepted: 12/12/2012] [Indexed: 12/21/2022]
Abstract
S-Allyl cysteine (SAC), a nontoxic garlic compound, has a variety of pharmacological properties, including antioxidant and hepatoprotective properties. In this report, we provide evidence that SAC prevented free fatty acid (FFA)-induced lipid accumulation and lipotoxicity in hepatocytes. SAC significantly reduced FFA-induced generation of reactive oxygen species, caspase activation and subsequent cell death. Also, SAC mitigated total cellular lipid and triglyceride accumulation in steatotic HepG2 cells. SAC significantly increased the phosphorylation of AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC) in HepG2 cells. Additionally, SAC down-regulated the levels of sterol regulatory element binding protein-1 (SREBP-1) and its target genes, including ACC and fatty acid synthase. Use of a specific inhibitor showed that SAC activated AMPK via calcium/calmodulin-dependent kinase kinase (CaMKK) and silent information regulator T1. Our results demonstrate that SAC activates AMPK through CaMKK and inhibits SREBP-1-mediated hepatic lipogenesis. Therefore, SAC has therapeutic potential for preventing nonalcoholic fatty liver disease.
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Affiliation(s)
- Yong Pil Hwang
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
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21
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Yang J, Wang T, Yang J, Rao K, Zhan Y, Chen RB, Liu Z, Li MC, Zhuan L, Zang GH, Guo SM, Xu H, Wang SG, Liu JH, Ye ZQ. S-allyl cysteine restores erectile function through inhibition of reactive oxygen species generation in diabetic rats. Andrology 2013; 1:487-94. [PMID: 23427186 DOI: 10.1111/j.2047-2927.2012.00060.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 11/13/2012] [Accepted: 12/19/2012] [Indexed: 01/01/2023]
Abstract
Excessive production of reactive oxygen species (ROS) by an overactive nicotinamide adenine dinucleotide phosphate (NADPH) oxidase system in penile tissue is an important mechanism of erectile dysfunction (ED). S-allyl cysteine (SAC), a bioactive component derived from garlic, was recently reported to exert versatile antioxidant properties. We hypothesized that SAC would be able to resolve diabetes-related ED by reducing ROS generation, and designed this study to investigate this possibility as well as to determine the related underlying mechanisms. A streptozotocin-induced diabetes rat model was established and used for comparative analysis of 4-week treatment regimens with insulin or SAC. The ratio of maximal intracavernous pressure (ICP) to mean arterial blood pressure (MAP) was measured to determine erectile function. Differential levels of ROS, NADPH oxidase subunits, nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) signalling pathway, and apoptosis were evaluated in cavernous tissues. Max ICP/MAP was found to be markedly decreased in untreated diabetic rats; SAC, but not insulin, treatment restored the ratio to baseline (in non-diabetic untreated controls). The corpus cavernosum of untreated diabetic rats showed increased p47(phox) and p67(phox) expression, ROS production and penile apoptotic index, and decreased phospho-endothelial nitric oxide synthase (phospho-eNOS, Ser1177) expression, cGMP concentration, B-cell lymphoma 2 (Bcl-2)/Bcl-2-associated X protein (Bax) ratio and smooth muscle cell number. SAC treatment normalized all the diabetes-induced effects, whereas insulin treatment partially normalized the alterations, but produced no effects on P47(phox) expression, penile ROS level, apoptotic index, Bcl-2/Bax ratio and smooth muscle cell number. Collectively, these data indicate that SAC treatment can restore erectile function in diabetic rats by preventing ROS formation through modulation of NADPH oxidase subunit expression. Furthermore, the poor efficacy of conventional insulin treatment for diabetic ED may be associated with an elevated level of ROS in penile tissue.
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Affiliation(s)
- J Yang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
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22
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Chao XD, Ma YH, Luo P, Cao L, Lau WB, Zhao BC, Han F, Liu W, Ning WD, Su N, Zhang L, Zhu J, Fei Z, Qu Y. Up-regulation of heme oxygenase-1 attenuates brain damage after cerebral ischemia via simultaneous inhibition of superoxide production and preservation of NO bioavailability. Exp Neurol 2012; 239:163-9. [PMID: 23059458 DOI: 10.1016/j.expneurol.2012.09.020] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 09/18/2012] [Accepted: 09/27/2012] [Indexed: 11/29/2022]
Abstract
Cerebral ischemia exacerbates neuronal death and neurological dysfunction. Evidence supports the involvement of oxidative/nitrative stress in the pathophysiology of cerebral ischemia. Heme oxygenase-1 (HO-1) is a rate-limiting enzyme in heme catabolism, possessing potent anti-oxidant and anti-apoptosis effects. In transgenic mice, HO-1 overproduction is neuroprotective against cerebral ischemia injury, but by unclear mechanisms. The present study determined whether treatment with adenoviral vector overexpressing HO-1 (Ad-HO-1) attenuates post-ischemic brain damage via reduction of oxidative/nitrative stress. After focal cerebral ischemia, Ad-HO-1 reduced lipid peroxidation and protein nitration, decreased infarct volume, and attenuated neurologic deficits. Zinc protoporphyrin IX (ZnPP IX, a specific HO-1 inhibitor) blocked Ad-HO-1 mediated effects against ischemic brain damage. Although Ad-HO-1 slightly reduced ischemic brain NO concentrations, Ad-HO-1 treatment significantly inhibited cerebral expression of iNOS protein expression, without significant effect upon nNOS or eNOS expression compared to vehicle after focal cerebral ischemia. Ad-HO-1 preserved NO bioavailability by increasing eNOS phosphorylation during ischemia compared to vehicle. Together, our results suggest that Ad-HO-1 attenuates post-ischemic brain damage via simultaneous reduction of oxidative/nitrative stress and preservation of NO bioavailability.
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Affiliation(s)
- Xiaodong D Chao
- The Department of Neurosurgery, Xinjiang Military General Hospital, Urumqi, 830000, China
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23
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The antioxidant mechanisms underlying the aged garlic extract- and S-allylcysteine-induced protection. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:907162. [PMID: 22685624 PMCID: PMC3363007 DOI: 10.1155/2012/907162] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Revised: 03/02/2012] [Accepted: 03/09/2012] [Indexed: 12/17/2022]
Abstract
Aged garlic extract (AGE) is an odorless garlic preparation containing S-allylcysteine (SAC) as its most abundant compound. A large number of studies have demonstrated the antioxidant activity of AGE and SAC in both in vivo--in diverse experimental animal models associated to oxidative stress--and in vitro conditions--using several methods to scavenge reactive oxygen species or to induce oxidative damage. Derived from these experiments, the protective effects of AGE and SAC have been associated with the prevention or amelioration of oxidative stress. In this work, we reviewed different antioxidant mechanisms (scavenging of free radicals and prooxidant species, induction of antioxidant enzymes, activation of Nrf2 factor, inhibition of prooxidant enzymes, and chelating effects) involved in the protective actions of AGE and SAC, thereby emphasizing their potential use as therapeutic agents. In addition, we highlight the ability of SAC to activate Nrf2 factor--a master regulator of the cellular redox state. Here, we include original data showing the ability of SAC to activate Nrf2 factor in cerebral cortex. Therefore, we conclude that the therapeutic properties of these molecules comprise cellular and molecular mechanisms at different levels.
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Ma Y, Su N, Chao X, Zhang Y, Zhang L, Han F, Luo P, Fei Z, Qu Y. Thioredoxin-1 attenuates post-ischemic neuronal apoptosis via reducing oxidative/nitrative stress. Neurochem Int 2012; 60:475-83. [DOI: 10.1016/j.neuint.2012.01.029] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 01/13/2012] [Accepted: 01/27/2012] [Indexed: 10/14/2022]
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25
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Shi GX, Andres DA, Cai W. Ras family small GTPase-mediated neuroprotective signaling in stroke. Cent Nerv Syst Agents Med Chem 2012; 11:114-37. [PMID: 21521171 DOI: 10.2174/187152411796011349] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 01/18/2011] [Accepted: 03/22/2011] [Indexed: 12/31/2022]
Abstract
Selective neuronal cell death is one of the major causes of neuronal damage following stroke, and cerebral cells naturally mobilize diverse survival signaling pathways to protect against ischemia. Importantly, therapeutic strategies designed to improve endogenous anti-apoptotic signaling appear to hold great promise in stroke treatment. While a variety of complex mechanisms have been implicated in the pathogenesis of stroke, the overall mechanisms governing the balance between cell survival and death are not well-defined. Ras family small GTPases are activated following ischemic insults, and in turn, serve as intrinsic switches to regulate neuronal survival and regeneration. Their ability to integrate diverse intracellular signal transduction pathways makes them critical regulators and potential therapeutic targets for neuronal recovery after stroke. This article highlights the contribution of Ras family GTPases to neuroprotective signaling cascades, including mitogen-activated protein kinase (MAPK) family protein kinase- and AKT/PKB-dependent signaling pathways as well as the regulation of cAMP response element binding (CREB), Forkhead box O (FoxO) and hypoxiainducible factor 1(HIF1) transcription factors, in stroke.
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Affiliation(s)
- Geng-Xian Shi
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, 741 S. Limestone St., Lexington, KY 40536-0509, USA.
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26
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Chen YQ, Pan WHT, Liu JH, Chen MM, Liu CM, Yeh MY, Tsai SK, Young MS, Zhang XM, Chao HM. The effects and underlying mechanisms of S-allyl l-cysteine treatment of the retina after ischemia/reperfusion. J Ocul Pharmacol Ther 2011; 28:110-7. [PMID: 22054242 DOI: 10.1089/jop.2011.0099] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
PURPOSE Retinal ischemia-associated ocular disorders are vision-threatening. The aim of the present study was to examine whether S-allyl l-cysteine (SAC) is able to protect against retina ischemia/reperfusion injury. METHODS In vivo, retinal ischemia in the rat was induced by raising intraocular pressure (IOP) to 120 mmHg for 60 min. In vitro, an ischemic-like insult, namely oxidative stress, was established by incubating retinal ganglion cell-5 (RGC-5) with 500 μM H(2)O(2) for 24 h. The mechanisms involved in these processes were evaluated by electrophysiology, immunohistochemistry, and molecular biological approaches. RESULTS The retinal changes caused by the high IOP were characterized by a decrease in electroretinogram b-wave amplitudes, a loss of choline acetyltransferase immunolabeling amacrine cell bodies/neuronal processes, and an upregulation of the mRNA levels of hypoxia-inducible factor-1α (HIF-1α), vascular endothelium growth factor (VEGF), and matrix metalloproteinase-9 (MMP-9). The increased protein levels of HIF-1α, VEGF, and MMP-9 were also seen in RGC-5 cells subjected to defined oxidative stress. Of clinical importance, the ischemic/ischemic-like detrimental effects were concentration-dependently (least effect at 25 μM) and/or significantly (50 and/or 100 μM) blunted when SAC was applied 15 min before retinal ischemia or ischemic-like insult, respectively. CONCLUSION SAC would seem to protect against retinal ischemia by acting as an antioxidant and inhibiting the upregulation of HIF-1α, VEGF, and MMP-9.
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Affiliation(s)
- Yan-Qing Chen
- Department of Pharmacology, School of Medicine, Shandong University, Jinan, Shandong, People's Republic of China
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27
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Maldonado PD, Alvarez-Idaboy JR, Aguilar-González A, Lira-Rocha A, Jung-Cook H, Medina-Campos ON, Pedraza-Chaverrí J, Galano A. Role of allyl group in the hydroxyl and peroxyl radical scavenging activity of S-allylcysteine. J Phys Chem B 2011; 115:13408-17. [PMID: 21995683 DOI: 10.1021/jp208233f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
S-Allylcysteine (SAC) is the most abundant compound in aged garlic extracts, and its antioxidant properties have been demonstrated. It is known that SAC is able to scavenge different reactive species including hydroxyl radical (•OH), although its potential ability to scavenge peroxyl radical (ROO•) has not been explored. In this work the ability of SAC to scavenge ROO• was evaluated, as well as the role of the allyl group (-S-CH(2)-CH═CH(2)) in its free radical scavenging activity. Two derived compounds of SAC were prepared: S-benzylcysteine (SBC) and S-propylcysteine (SPC). Their abilities to scavenge •OH and ROO• were measured. A computational analysis was performed to elucidate the mechanism by which these compounds scavenge •OH and ROO•. SAC was able to scavenge •OH and ROO•, in a concentration-dependent way. Such activity was significantly ameliorated when the allyl group was replaced by benzyl or propyl groups. It was shown for the first time that SAC is able to scavenge ROO•.
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Affiliation(s)
- Perla D Maldonado
- Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, México DF, Mexico.
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28
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NAM SM, YOO DY, KIM W, YOO M, KIM DW, WON MH, HWANG IK, YOON YS. Effects of S-Allyl-L-Cysteine on Cell Proliferation and Neuroblast Differentiation in the Mouse Dentate Gyrus. J Vet Med Sci 2011; 73:1071-5. [DOI: 10.1292/jvms.10-0557] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Sung Min NAM
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University
| | - Dae Young YOO
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University
| | - Woosuk KIM
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University
| | - Miyoung YOO
- Food Analysis Center, Korea Food Research Institute
| | | | - Moo-Ho WON
- Department of Neurobiology, School of Medicine, Kangwon National University
| | - In Koo HWANG
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University
| | - Yeo Sung YOON
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University
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29
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Asdaq SM, Inamdar MN. Potential of garlic and its active constituent, S-allyl cysteine, as antihypertensive and cardioprotective in presence of captopril. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 17:1016-1026. [PMID: 20739164 DOI: 10.1016/j.phymed.2010.07.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 06/08/2010] [Accepted: 07/15/2010] [Indexed: 05/29/2023]
Abstract
The purpose of the present study was to investigate the role of fresh garlic homogenate (FGH) and its bioactive sulphur compound S-allyl cysteine sulphoxide (SACS) in potentiating antihypertensive and cardioprotective activities of captopril in rats. SACS was extracted from the fresh garlic using ion exchange resins with yield of 890 mg/kg garlic. The dose of SACS was calculated based on the amount of SACS extracted from 125 to 250 mg of FGH. Albino rats weighing 150-200 g were fed with 10% fructose in fluid for 3 weeks for induction of hypertension and subsequently administered FGH (125 and 250 mg/kg, p.o.) or SACS (0.111 and 0.222 mg/kg/day, p.o.) for the next 3 weeks in their respective groups. In CAP alone and interactive groups (GH+CAP; SACS+CAP), captopril 30 mg/kg was given during sixth week of 10% fructose in fluid. At the end of drug treatment, animals were given isoproterenol 175 mg/kg subcutaneously for two consecutive days. Additionally, varying concentrations of SACS (4, 8, 16, 32 and 64 ng), CAP (1, 2, 4, 8 and 16 ng) and their combination (4:1) were checked for fall in blood pressure in hypertensive rats (10% fructose in fluid without pretreatment) as well as angiotensin-converting enzyme (ACE) inhibiting activity using guinea pig ileum. An isobolographic analysis was used to characterise the interaction between SACS and CAP for fall in blood pressure and ACE inhibiting evaluations. Administration of captopril, low and high doses of FGH (125, 250 mg/kg), either alone or together showed fall in fluid intake and body weight. The combined therapy of FGH 250 mg/kg and CAP was more effective in reducing systolic blood pressure, cholesterol, triglycerides and glucose. The SOD and catalase activities in heart tissue were significantly elevated in groups treated with FGH, SACS, CAP, FGH+CAP and SACS+CAP. Further, combined therapy of FGH 250 mg/kg and CAP caused significant fall in LDH and CK-MB activities in serum and elevation in heart tissue homogenate. SACS in low dose was less effective than low dose of FGH; similarly, high dose of FGH was more efficacious than high dose of SACS. Corroborating with this, combined therapy of garlic (250 mg/kg) with CAP demonstrated higher synergistic action than combination of SACS (0.222 mg/kg) with CAP suggesting the role of additional bioactive constituents apart from SACS, responsible for therapeutic efficacy of garlic. Moreover, combination of SACS and CAP exerted super-additive (synergistic) interaction with respect to fall in blood pressure and ACE inhibition. This study may represent an advertence on concomitant use of garlic or its bioactive constituent, SACS, with captopril.
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Affiliation(s)
- S M Asdaq
- Department of Phaarmacology, Krupanidhi College of Pharmacy, Varthur Hobli, Chikkabellandur Village, Carmalaram Post, Bangalore 560035, India.
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Aguilera P, Chánez-Cárdenas ME, Ortiz-Plata A, León-Aparicio D, Barrera D, Espinoza-Rojo M, Villeda-Hernández J, Sánchez-García A, Maldonado PD. Aged garlic extract delays the appearance of infarct area in a cerebral ischemia model, an effect likely conditioned by the cellular antioxidant systems. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 17:241-247. [PMID: 19577455 DOI: 10.1016/j.phymed.2009.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 06/02/2009] [Accepted: 06/03/2009] [Indexed: 05/28/2023]
Abstract
Experimental evidence has shown that some garlic-derived products have a protective effect against ischemic brain injury. The present study was designed to investigate the effect of aged garlic extract (AGE), establish the therapeutic window, and determine its protective mechanism in a cerebral ischemia model. Animals were subjected to middle cerebral artery occlusion (MCAO) for 2h and treated with 1.2ml/kg body wt.(i.p.) of AGE 30min before, at the beginning of (0R), or 1h after reperfusion. The 0R treatment significantly reduced the size of the infarct area after 2h of reperfusion. Repeated doses subsequent to the 0R treatment (at 1, 2, or 3h after reperfusion) had no effect on the temporal window of protection. The protective 0R treatment with AGE prevented the increase in nitrotyrosine and the decrease in total superoxide dismutase, glutathione peroxidase, and extracellular superoxide dismutase activities induced by MCAO. These data indicate that AGE delays the effects of ischemia/reperfusion-induced neuronal injury. However, this treatment itself was not associated with a noticeable improvement in the neurological outcome, or with an effect on the inflammatory response. We conclude that the neuroprotective effect of AGE in the 0R treatment might be associated with control of the free-radical burst induced by reperfusion, preservation of antioxidant enzyme activity, and the delay of other pathophysiological processes.
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Affiliation(s)
- P Aguilera
- Laboratorio de Patología Vascular Cerebral, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Av. Insurgentes Sur 3877, México DF. 14269, México
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31
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Elinos-Calderón D, Robledo-Arratia Y, Pérez-De La Cruz V, Maldonado PD, Galván-Arzate S, Pedraza-Chaverrí J, Santamaría A. Antioxidant strategy to rescue synaptosomes from oxidative damage and energy failure in neurotoxic models in rats: protective role of S-allylcysteine. J Neural Transm (Vienna) 2009; 117:35-44. [PMID: 19866339 DOI: 10.1007/s00702-009-0299-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Accepted: 08/20/2009] [Indexed: 11/28/2022]
Abstract
The functional preservation of nerve endings since the early stages of toxicity in a given damaging insult-either acute or chronic-by means of antioxidant and neuroprotective agents is a primary need to design therapeutic strategies for neurodegenerative disorders, with particular emphasis on those diseases with excitotoxic and depleted energy metabolism components. S-allylcysteine (SAC), a well-known antioxidant agent, was tested as a post-treatment in different in vitro and in vivo neurotoxic models. Quinolinic acid (QUIN) was used as a typical excitotoxic/pro-oxidant inducer, 3-nitropropionic acid (3-NP) was employed as a mitochondrial function inhibitor, and their combination (QUIN + 3-NP) was also evaluated in in vitro studies. For in vitro purposes, increasing concentrations of SAC (10-100 microM) were added to isolated brain synaptosomes at different times (1, 3 and 6 h) after the incubation with toxins (100 microM QUIN, 1 mM 3-NP or the combination of QUIN (21 microM) + 3-NP (166 microM). Thirty minutes later, lipid peroxidation (LP) and mitochondrial dysfunction (MD) were evaluated. For in vivo studies, SAC (100 mg/kg, i.p.) was given to QUIN- or 3-NP-striatally lesioned rats for 7 consecutive days (starting 120 min post-lesion). LP and MD were evaluated 7 days post-lesion in isolated striatal synaptosomes. Circling behavior was also assessed. Our results describe a differential pattern of protection achieved by SAC, mostly expressed in the 3-NP toxic model, in which nerve ending protection was found within the first hours (1 and 3) after the toxic insult started, supporting the concept that the ongoing oxidative damage and energy depletion can be treated during the first stages of neurotoxic events.
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Affiliation(s)
- Diana Elinos-Calderón
- Laboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Insurgentes Sur 3877, CP 14269, Mexico, D.F., Mexico
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Ding Q, Wang Q, Deng J, Gu Q, Hu S, Li Y, Su B, Zeng Y, Xiong L. Sevoflurane preconditioning induces rapid ischemic tolerance against spinal cord ischemia/reperfusion through activation of extracellular signal-regulated kinase in rabbits. Anesth Analg 2009; 109:1263-72. [PMID: 19762756 DOI: 10.1213/ane.0b013e3181b2214c] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The protective effect of sevoflurane preconditioning against spinal cord ischemia/reperfusion (I/R) is unclear. We designed this study to investigate whether sevoflurane preconditioning could induce rapid ischemic tolerance to the spinal cord in a rabbit model of transient spinal cord ischemia and how the role of extracellular signal-regulated kinase (ERK) is involved. METHODS To test whether preconditioning with sevoflurane induces rapid ischemic tolerance, New Zealand White male rabbits were randomly assigned to three groups. Animals in the Sev group received preconditioning with 3.7% sevoflurane (1.0 minimum alveolar anesthetic concentration) in 96% oxygen for 30 min, whereas animals in the O(2) group serving as controls inhaled only 96% oxygen for 30 min. The Sham group received the same anesthesia and surgical preparation but no preconditioning or spinal cord I/R. To evaluate the role of ERK activation in sevoflurane preconditioning, rabbits were randomly assigned to four groups. U0126, an ERK inhibitor, was administered IV 20 min before the beginning of preconditioning in the U0126 + O(2) and U0126 + Sev groups. Dimethylsulfoxide was administered IV at the same time in the vehicle + O(2) and vehicle + Sev groups. At 1 h after preconditioning, the animals were subjected to spinal cord I/R induced by infrarenal aorta occlusion. All animals were assessed at 48 h after reperfusion with modified Tarlov criteria, and the spinal cord segments (L5) were harvested for histopathological examination, TUNEL staining, and Western blot of phosphor-ERK1/2. RESULTS The animals in the Sev group had higher neurological scores and more normal motor neurons than those in the O(2) group (P < 0.01 for each comparison). Compared with vehicle + Sev group, the U0126 + Sev group had worse neurological outcomes, fewer viable neurons, more apoptotic neurons, and significantly decreased ERK1/2 phosphorylation (P <or= 0.01 for each comparison). There were no significant differences in the outcomes among vehicle + O(2), U0126 + O(2), and U0126 + Sev groups. CONCLUSIONS This study demonstrates that sevoflurane preconditioning induces rapid tolerance to spinal cord I/R in rabbits, and the tolerance is possibly mediated through the activation of ERK. These data suggest that sevoflurane preconditioning might provide a new practical method for protecting perioperative spinal cord I/R.
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Affiliation(s)
- Qian Ding
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
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Atif F, Yousuf S, Agrawal SK. S-allyl L-cysteine diminishes cerebral ischemia-induced mitochondrial dysfunctions in hippocampus. Brain Res 2009; 1265:128-37. [PMID: 19401183 DOI: 10.1016/j.brainres.2008.12.077] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Revised: 12/25/2008] [Accepted: 12/29/2008] [Indexed: 12/25/2022]
Abstract
Ischemic brain is highly vulnerable to free radicals mediated secondary neuronal damage especially mitochondrial dysfunctions. Present study investigated the neuroprotective effect of S-allyl L-cysteine (SAC), a water soluble compound from garlic, against cerebral ischemia/reperfusion (I/R)-induced mitochondrial dysfunctions in hippocampus (HIP). We used transient rat middle cerebral artery occlusion (MCAO) model of brain ischemia. SAC (300 mg/kg) was given twice intraperitoneally: 15 min pre-occlusion and 2 h post-occlusion at the time of reperfusion. SAC significantly restored ATP content and the activity of mitochondrial respiratory complexes in SAC treated group which were severely altered in MCAO group. A marked decrease in calcium swelling was observed as a result of SAC treatment. Western blot analysis showed a marked decrease in cytochrome c release as a result of SAC treatment. The status of mitochondrial glutathione (GSH) and glucose 6-phosphate dehydrogenase (G6-PD) was restored by SAC treatment with a significant decrease in mitochondrial lipid peroxidation (LPO), protein carbonyl (PC) and H2O2 content. SAC significantly improved neurological deficits assessed by different scoring methods as compared to MCAO group. Also, the brain edema was significantly reduced. The findings of this study suggest the ability of SAC in functional preservation of ischemic neurovascular units and its therapeutic relevance in the treatment of ischemic stroke.
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Affiliation(s)
- Fahim Atif
- Department of Surgery, Section of Neurosurgery, 6009 Poynter Hall, University of Nebraska Medical Center, Omaha, Nebraska 68198-6250, USA.
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Chun HS, Kim JM, Choi EH, Chang N. Neuroprotective effects of several korean medicinal plants traditionally used for stroke remedy. J Med Food 2008; 11:246-51. [PMID: 18598165 DOI: 10.1089/jmf.2007.542] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The neuroprotective effect of six aqueous extracts and one alcoholic extract prepared from seven medicinal plants that have been recorded as having therapeutic effects for stroke in Korean traditional medicine were studied using both in vitro and in vivo cerebral ischemia models. Among the extracts tested, the aqueous extracts of Acorus gramineus, Chrysanthemum indicum, and Pinus densiflora and the alcoholic extract of Vitis vinifera significantly increased the cell viability of SK-N-SH human neuroblastoma cells exposed to oxygen-glucose deprivation (P < .05). Following two-vessel occlusion in gerbils, extracts of P. densiflora and V. vinifera significantly increased the number of surviving cells/mm(2) of the CA1 region by 2.1-2.2-fold (P < .01). Oral or intraperitoneal administration of S-allyl cysteine, as a positive control, also markedly increased cell survival up to about 3.3-fold at the dosage of 300 mg/kg of body weight (P < .01). These results indicate that P. densiflora and V. vinifera exert neuroprotective effects against ischemic insults in both the in vitro and in vivo cerebral ischemia models and prompted us to further characterize the detailed mechanism of action and elucidate the active principles.
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Affiliation(s)
- Hyang Sook Chun
- Korea Food Research Institute, Sungnam, Seoul, Republic of Korea.
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Segoviano-Murillo S, Sánchez-González DJ, Martínez-Martínez CM, Cruz C, Maldonado PD, Pedraza-Chaverrí J. S-allylcysteine ameliorates ischemia and reperfusion induced renal damage. Phytother Res 2008; 22:836-40. [DOI: 10.1002/ptr.2396] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Medina-Campos ON, Barrera D, Segoviano-Murillo S, Rocha D, Maldonado PD, Mendoza-Patiño N, Pedraza-Chaverri J. S-allylcysteine scavenges singlet oxygen and hypochlorous acid and protects LLC-PK1 cells of potassium dichromate-induced toxicity. Food Chem Toxicol 2007; 45:2030-9. [PMID: 17576034 DOI: 10.1016/j.fct.2007.05.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2006] [Revised: 04/04/2007] [Accepted: 05/07/2007] [Indexed: 11/29/2022]
Abstract
It has been found that S-allylcysteine (SAC), a garlic-derived compound, has in vivo and in vitro antioxidant properties. In addition, it is known that SAC is able to scavenge different reactive oxygen or nitrogen species including superoxide anion (O(2)(-)), hydrogen peroxide (H(2)O(2)), hydroxyl radical (OH()), and peroxynitrite anion (ONOO(-)) although the IC(5O) values for each reactive species has not been calculated and the potential ability of SAC to scavenge singlet oxygen ((1)O(2)) and hypochlorous acid (HOCl) has not been explored. The purposes of this work was (a) to explore the potential ability of SAC to scavenge (1)O(2) and HOCl, (b) to further characterize the O(2)(-), H(2)O(2), OH(), and ONOO(-) scavenging ability of SAC by measuring the IC(50) values using in vitro assays, and (c) to explore the potential ability of SAC to ameliorate the potassium dichromate (K(2)Cr(2)O(7))-induced cytotoxicity in LLC-PK1 cells in which oxidative stress is involved. The scavenging activity was compared against the following reference compounds: N-acetylcysteine for O(2)(-), sodium pyruvate for H(2)O(2), dimethylthiourea for OH(), lipoic acid and glutathione for (1)O(2), lipoic acid for HOCl, and penicillamine for ONOO(-). It was found that SAC was able to scavenge concentration-dependently all the species assayed with the following IC(5O) (mean+/-SEM, mM): O(2)(-) (14.49+/-1.67), H(2)O(2) (68+/-1.92), OH() (0.68+/-0.06), (1)O(2) (1.93+/-0.27), HOCl (2.86+/-0.15), and ONOO(-) (0.80+/-0.05). When the ability of SAC to scavenge these species was compared to those of the reference compounds it was found that the efficacy of SAC (a) to scavenge O(2)(-), H(2)O(2), OH(), and ONOO(-) was lower, (b) to scavenge HOCl was similar, and (c) to scavenge (1)O(2) was higher. In addition, it was found that SAC was able to prevent K(2)Cr(2)O(7)-induced toxicity in LLC-PK1 cells in culture. It was showed for the first time that SAC is able to scavenge (1)O(2) and HOCl and to ameliorate the K(2)Cr(2)O(7)-induced toxicity.
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Affiliation(s)
- Omar Noel Medina-Campos
- Facultad de Química, Departamento de Biología, Edificio F, Sequndo Piso, Laboratorio 209, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, 04510, D.F., Mexico
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Chuah SC, Moore PK, Zhu YZ. S-allylcysteine mediates cardioprotection in an acute myocardial infarction rat model via a hydrogen sulfide-mediated pathway. Am J Physiol Heart Circ Physiol 2007; 293:H2693-701. [PMID: 17766469 DOI: 10.1152/ajpheart.00853.2007] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
S-allylcysteine (SAC) is an organosulfur-containing compound derived from garlic. Studies have shown that garlic is beneficial in the treatment of cardiovascular diseases. This study aims to elucidate if SAC is responsible for this cardioprotection using acute myocardial infarction (AMI) rat models. In addition, we hypothesized that SAC may mediate cardioprotection via a hydrogen sulfide (H(2)S)-related pathway. Rats were pretreated with saline, SAC (50 mg x kg(-1) x day(-1)), SAC + propagylglycine (PAG; 50 mg + 10 mg x kg(-1) x day(-1)) or PAG (10 mg x kg(-1) x day(-1)) for 7 days before AMI induction and killed 48 h after. Our results showed that SAC significantly lowered mortality (12.5% vs. 33.3%, P < 0.05) and reduced infarct size. SAC + PAG- and PAG-treated rats had larger infarct sizes than controls (60.9 +/- 0.01 and 62.0 +/- 0.03%, respectively, vs. 50.0 +/- 0.03%; P < 0.05). Pretreatment with SAC did not affect BP, but BP was significantly elevated in SAC + PAG and PAG-treated groups (P < 0.05). In addition, plasma H(2)S levels and left ventricular cystathionine-gamma-lyase (CSE) activities were analyzed to investigate the involvement of H(2)S. CSE is the enzyme responsible for H(2)S production in the heart. SAC increased left ventricular CSE activity in AMI rats (2.75 +/- 0.34 vs. 1.23 +/- 0.16 micromol x g protein(-1) x h(-1); P < 0.01). SAC + PAG-treated rats had significantly lower CSE activity compared with the SAC-treated group (1.22 +/- 0.27 vs. 2.75 +/- 0.34 micromol x g protein(-1) x h(-1); P < 0.05). Similarly, SAC-treated rats had higher plasma H(2)S concentration compared with controls and the SAC + PAG-treated group. Protein expression studies revealed that SAC upregulated CSE expression (1.1-fold of control; P < 0.05), whereas SAC + PAG and PAG downregulated its expression (0.88-fold of control in both groups; P < 0.005). In conclusion, our study provides novel evidence that SAC is protective in myocardial infarction via an H(2)S-related pathway.
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Affiliation(s)
- Shin Chet Chuah
- Cardiovascular Biology Research Group, Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, China
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Cruz C, Correa-Rotter R, Sánchez-González DJ, Hernández-Pando R, Maldonado PD, Martínez-Martínez CM, Medina-Campos ON, Tapia E, Aguilar D, Chirino YI, Pedraza-Chaverri J. Renoprotective and antihypertensive effects of S-allylcysteine in 5/6 nephrectomized rats. Am J Physiol Renal Physiol 2007; 293:F1691-8. [PMID: 17686953 DOI: 10.1152/ajprenal.00235.2007] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Progressive renal damage and hypertension are associated with oxidative and nitrosative stress. On the other hand, S-allylcysteine (SAC), the most abundant organosulfur compound in aged garlic extract (AG), has antioxidant properties. The effects of SAC and AG on blood pressure, renal damage, and oxidative and nitrosative stress were studied in five-sixths nephrectomized rats treated with SAC (200 mg/kg ip) and AG (1.2 ml/kg ip) every other day for 30 days. Proteinuria and serum creatinine and blood urea nitrogen concentrations were measured on days 0, 5, 10, 15, and 30, and systolic blood pressure was recorded on days 0, 15, and 30. The degree of glomerulosclerosis and tubulointerstitial damage, the immunostaining for inducible nitric oxide synthase, 3-nitrotyrosine, poly(ADP-ribose), and the subunits of NADPH oxidase p22phox and gp91phox, and the activity of SOD were determined on day 30. SAC and AG reduced hypertension, renal damage, and the abundance of inducible nitric oxide synthase, 3-nitrotyrosine, poly(ADP-ribose), p22phox, and gp91phox and increased SOD activity. Our data suggest that the antihypertensive and renoprotective effects of SAC and AG are associated with their antioxidant properties and that they may be used to ameliorate hypertension and delay the progression of renal damage.
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Affiliation(s)
- Cristino Cruz
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico
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Chang HJ, Kim HJ, Chun HS. Quantitative structure−activity relationship (QSAR) for neuroprotective activity of terpenoids. Life Sci 2007; 80:835-41. [PMID: 17166521 DOI: 10.1016/j.lfs.2006.11.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 10/12/2006] [Accepted: 11/03/2006] [Indexed: 10/23/2022]
Abstract
Neuroprotective activity of thirteen terpenoids on human neuroblastoma SH-SY5Y was evaluated in vitro by using a simulated ischemia model. The protective effects on ischemic damage ranged from 3.0% to 56.5%, and trans-4,11,11-trimethyl-8-methylenebicyclo[7,2,0]undec-4-ene (trans-caryophyllene) showed the highest neuroprotective activity. A quantitative structure-activity relationship (QSAR) model was developed for eleven terpenoids with significant neuroprotective activity using TSAR software. The QSAR study produced two equations with significant predictive values (r(2) and p value) and indicated that the activity was mainly governed by lipophilicity, shape index, and electrostatic property. This QSAR approach can contribute to a better understanding of structural properties of the terpenoids responsible for neuroprotection, and can be useful in predicting the neuroprotective activity of other terpenoids.
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Affiliation(s)
- Hyun-Joo Chang
- Korea Food Research Institute, San 46-1, Backhyun, Bundang-gu, Sungnam, Kyonggi-do 463-746, South Korea
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