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Batcioglu K, Dogan T, Kustepe E, Uyumlu A, Yilmaztekin Y. Protective effect of Lycium barbarum on renal injury induced by acute pancreatitis in rats. Pharmacogn Mag 2022. [DOI: 10.4103/pm.pm_516_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Mauerhofer C, Grumet L, Schemmer P, Leber B, Stiegler P. Combating Ischemia-Reperfusion Injury with Micronutrients and Natural Compounds during Solid Organ Transplantation: Data of Clinical Trials and Lessons of Preclinical Findings. Int J Mol Sci 2021; 22:10675. [PMID: 34639016 PMCID: PMC8508760 DOI: 10.3390/ijms221910675] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/22/2021] [Accepted: 09/26/2021] [Indexed: 02/07/2023] Open
Abstract
Although extended donor criteria grafts bear a higher risk of complications such as graft dysfunction, the exceeding demand requires to extent the pool of potential donors. The risk of complications is highly associated with ischemia-reperfusion injury, a condition characterized by high loads of oxidative stress exceeding antioxidative defense mechanisms. The antioxidative properties, along with other beneficial effects like anti-inflammatory, antiapoptotic or antiarrhythmic effects of several micronutrients and natural compounds, have recently emerged increasing research interest resulting in various preclinical and clinical studies. Preclinical studies reported about ameliorated oxidative stress and inflammatory status, resulting in improved graft survival. Although the majority of clinical studies confirmed these results, reporting about improved recovery and superior organ function, others failed to do so. Yet, only a limited number of micronutrients and natural compounds have been investigated in a (large) clinical trial. Despite some ambiguous clinical results and modest clinical data availability, the vast majority of convincing animal and in vitro data, along with low cost and easy availability, encourage the conductance of future clinical trials. These should implement insights gained from animal data.
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Affiliation(s)
- Christina Mauerhofer
- Department of Science and Product Development, pro medico HandelsGmbH, Liebenauer Tangente 6, 8041 Graz, Austria; (C.M.); (L.G.)
| | - Lukas Grumet
- Department of Science and Product Development, pro medico HandelsGmbH, Liebenauer Tangente 6, 8041 Graz, Austria; (C.M.); (L.G.)
| | - Peter Schemmer
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
| | - Bettina Leber
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
| | - Philipp Stiegler
- Division of Transplant Surgery, Department of Surgery, Medical University, 8036 Graz, Austria; (P.S.); (B.L.)
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Dossi CG, Vargas RG, Valenzuela R, Videla LA. Beneficial effects of natural compounds on experimental liver ischemia-reperfusion injury. Food Funct 2021; 12:3787-3798. [PMID: 33977997 DOI: 10.1039/d1fo00289a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Liver ischemia-reperfusion injury (IRI) is a phenomenon inherent to hepatic surgery that severely compromises the organ functionality, whose underlying mechanisms involve cellular and molecular interrelated processes leading to the development of an excessive inflammatory response. Liver resident cells and those recruited in response to injury generate pro-inflammatory signals such as reactive oxygen species, cytokines, chemokines, proteases and lipid mediators that contribute to hepatocellular necrosis and apoptosis. Besides, dying hepatocytes release damage-associated molecular patterns that actívate inflammasomes to further stimulate inflammatory responses leading to massive cell death. Since liver IRI is a complication of hepatic surgery in man, extensive preclinical studies have assessed potential protective strategies, including the supplementation with natural compounds, with the objective to downregulate nuclear factor-κB functioning, the main effector of inflammatory responses. This can be accomplished by either the activation of peroxisome proliferator-activated receptor-α, G protein-coupled receptor 120 or antioxidant signaling pathways, the synthesis of specific pro-resolving mediators, downregulation of Toll-like receptor 4 activity or additional contributory mechanisms that are beginning to be understood. The latter aspect is a crucial issue to be accomplished in preclinical studies, in order to establish adequate conditions for the supplementation with natural products before major liver surgeries in man involving warm IR, such as hepatic trauma or resection of large intrahepatic tumors.
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Affiliation(s)
- Camila G Dossi
- Escuela de Medicina Veterinaria, Facultad Ciencias de La Vida, Universidad Andres Bello, Viña del Mar, Chile.
| | - Romina G Vargas
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Rodrigo Valenzuela
- Department of Nutrition, Faculty of Medicine, Uiversity of Chile, Santiago, Chile and Nutritional Sciences Department, Faculty of Medicine, University of Toronto, Toronto, ON M2J4A6, Canada
| | - Luis A Videla
- Molecular and Clinical Pharmacology Program, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
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WU IH, CHAN SM, LIN CT. The neuroprotective effect of submicron and blended Lycium barbarum for experiment retinal ischemia and reperfusion injury in rats. J Vet Med Sci 2020; 82:1719-1728. [PMID: 32921657 PMCID: PMC7719877 DOI: 10.1292/jvms.19-0646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 08/24/2020] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to investigate the neuroprotective potential of submicron (milled) and blended Lycium barbarum (LB) in glaucomatous retinal neuropathy using a rat model of high intraocular pressure (HIOP) induced retinal ischemia. The rats were treated with 500, 250, 100 mg/kg LB (submicron or blended form) orally once daily for 56 days respectively after 1 week of retinal ischemia induction. We conducted electroretinography (ERG), histopathological analysis in retina and antioxidative level assays, such as total glutathione (GSH (glutathione) + reduced glutathione) + GSSH (glutathione disulfide), catalase activity, SOD (superoxide dismutase) activity, and lipid peroxidant malondialdehyde (MDA) in the retina and plasma of test rats. The results indicated that the amplitudes of a and b wave of ERG were preserved in rats treated with submicron and blended LB groups, the best protective effect on ERG b wave amplitudes was observed at the dosage of 250 mg/kg of both forms of LB. Retinal thickness was best preserved, particularly significant in the retinal inner nuclear layer in submicron 250 mg/kg LB group. The levels of antioxidant GSSH+GSH, SOD and catalase activity in the retina were higher in blended 500 mg/kg and submicron 250 mg/kg groups than other groups, while the MDA level was lower in submicron LB groups than that in blended LB and non-LB IR group. In the plasma, there was no significant difference in the levels of GSSH+GSH and catalase activity between treated groups, but higher levels of SOD and lower levels of MDA were observed in 250 mg/kg submicron and 500 mg/kg submicron LB groups than the blended LB and non-LB IR groups. Generally better antioxidative effects were observed in the submicron LB than blended LB among treated groups, especially the 250 mg/kg submicron LB, providing good retinal neuroprotection by preserving retinal structure and function with improved antioxidative capacity. The submicron LB may have clinical implication as an adjuvant therapy of oxidative stress and retinal damage caused by HIOP induced retinal ischemia and reperfusion injury.
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Affiliation(s)
- I-Han WU
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, Taipei 106, Taiwan
| | - Sze-Min CHAN
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, Taipei 106, Taiwan
| | - Chung-Tien LIN
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, Taipei 106, Taiwan
- Department of Ophthalmology, National Taiwan University Veterinary Hospital, Taipei 106, Taiwan
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Kashiouris MG, L’Heureux M, Cable CA, Fisher BJ, Leichtle SW, Fowler AA. The Emerging Role of Vitamin C as a Treatment for Sepsis. Nutrients 2020; 12:nu12020292. [PMID: 31978969 PMCID: PMC7070236 DOI: 10.3390/nu12020292] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 12/26/2022] Open
Abstract
Sepsis, a life-threatening organ dysfunction due to a dysregulated host response to infection, is a leading cause of morbidity and mortality worldwide. Decades of research have failed to identify any specific therapeutic targets outside of antibiotics, infectious source elimination, and supportive care. More recently, vitamin C has emerged as a potential therapeutic agent to treat sepsis. Vitamin C has been shown to be deficient in septic patients and the administration of high dose intravenous as opposed to oral vitamin C leads to markedly improved and elevated serum levels. Its physiologic role in sepsis includes attenuating oxidative stress and inflammation, improving vasopressor synthesis, enhancing immune cell function, improving endovascular function, and epigenetic immunologic modifications. Multiple clinical trials have demonstrated the safety of vitamin C and two recent studies have shown promising data on mortality improvement. Currently, larger randomized controlled studies are underway to validate these findings. With further study, vitamin C may become standard of care for the treatment of sepsis, but given its safety profile, current treatment can be justified with compassionate use.
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Affiliation(s)
- Markos G. Kashiouris
- Department of Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980050, Richmond, VA 23298, USA; (M.L.); (C.A.C.); (B.J.F.); (A.A.F.)
- Correspondence: ; Tel.: +1-(804)-828-9893
| | - Michael L’Heureux
- Department of Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980050, Richmond, VA 23298, USA; (M.L.); (C.A.C.); (B.J.F.); (A.A.F.)
| | - Casey A. Cable
- Department of Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980050, Richmond, VA 23298, USA; (M.L.); (C.A.C.); (B.J.F.); (A.A.F.)
| | - Bernard J. Fisher
- Department of Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980050, Richmond, VA 23298, USA; (M.L.); (C.A.C.); (B.J.F.); (A.A.F.)
| | - Stefan W. Leichtle
- Department of Surgery, Division of Acute Care Surgical Services, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980454, Richmond, VA 23298, USA;
| | - Alpha A. Fowler
- Department of Internal Medicine, Division of Pulmonary Disease and Critical Care Medicine, Virginia Commonwealth University School of Medicine, 1200 E Broad St., P.O. Box 980050, Richmond, VA 23298, USA; (M.L.); (C.A.C.); (B.J.F.); (A.A.F.)
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Intravenous Vitamin C attenuates hemorrhagic shock-related renal injury through the induction of SIRT1 in rats. Biochem Biophys Res Commun 2018; 501:358-364. [PMID: 29673592 DOI: 10.1016/j.bbrc.2018.04.111] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 04/13/2018] [Indexed: 12/15/2022]
Abstract
To investigate the effect of intravenous Vitamin C (VC) on hemorrhagic shock (HS)-associated rat renal injury and the involved mechanism. Thirty SD rats were randomly assigned to the sham surgery (sham), hemorrhagic shock (HS), HS+100 mg/kg VC (H + VL), HS+500 mg/kg VC (H + VH) and HS+100 mg/kg VC + EX527 (H + VL + E) groups. Tissue and blood samples were collected 6 h after surgery. Kidney pathological changes were scored. Creatinine (CRE), blood urea nitrogen (BUN), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) levels in serum and Vitamin C levels and superoxide dismutase (SOD) activity and the ability to suppress hydroxyl radical (RAFHR) in plasma were measured. The expression of Sirtuin1 (SIRT1), Acetyl-NF-κB (Ace-NF-κB), heme oxygenase-1 (HO-1), TNF-α, and IL-1β in tissues was analyzed by ELISA or western-blot. In the HS group, the kidney pathological score and CRE, BUN, TNF-α, and IL-1β levels in serum were significantly higher than in the Sham group (P < 0.05), while SOD and RAFHR were significantly decreased in the plasma (P < 0.05). SOD activity and SIRT1 expression were remarkably lower in the kidney in the HS group than in the Sham group (P < 0.05), while MDA, TNF-α, and IL-1β concentrations and Acetyl-NF-κB andHO-1 expression in the kidney showed a noteworthy increase compared to the Sham group (P < 0.05). Compared to the HS group, VC treatment led to a remarkable reduction in the kidney pathological score and CRE,BUN,TNF-α, and IL-1β levels (P < 0.05), and a significant increase in Vitamin C, SOD, and RAFHR levels in the plasma (P < 0.05). Additionally, MDA, TNF-α, IL-1β and Acetyl-NF-κB expression levels were decreased in the kidney (P < 0.05), while SOD, SIRT1 and HO-1 levels were notably enhanced. There were no differences between the H + VL and H + VH groups aside from plasma Vitamin C levels. The effect of Vitamin C was decreased after the addition of EX527, which inhibits SIRT1. Intravenous Vitamin C might attenuate HS-related renal injury via the SIRT1 pathway, and it appears that there were no differences in the effects between the high and low doses.
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Bilgic Y, Harputluoglu MMM, Kutlu O, Demirel U, Gul M, Otlu B, Temel I, Gursoy S, Dertli R, Selcuk EB, Yilmaz I, Kilis T. Effects of Lycium barbarum on bacterial translocation in thioacetamide-induced liver injury in rats. EUR J INFLAMM 2015; 13:154-163. [DOI: 10.1177/1721727x15618413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
Background and study aim: The aim of the present study was to investigate the effects of Lycium barbarum (LB) on bacterial translocation (BT) frequency in thioacetamide (TAA)-induced liver injury in rats. Materials and methods: Group 1 was the control. In group 2 (TAA), rats received TAA daily for 3 days. In group 3 (TAA+LB), Lycium barbarum was administered orally 25 mg/kg for 21 days prior to the first TAA injection. In group 4 (LB), rats received only Lycium barbarum. Results: In our study, Lycium barbarum treatment did not attenuate liver damage. Lycium barbarum treatment decreased ileal E. coli counts and intestinal damage but it did not alter BT frequency. Conclusions: In conclusion, the effects of Lycium barbarum on BT may be related to ongoing severe liver damage in this model.
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Affiliation(s)
- Y Bilgic
- Department of Gastroenterology, Inonu University Medical Faculty, Malatya, Turkey
| | - MMM Harputluoglu
- Department of Gastroenterology, Inonu University Medical Faculty, Malatya, Turkey
| | - O Kutlu
- Department of Internal Medicine, Inonu University Medical Faculty, Malatya, Turkey
| | - U Demirel
- Department of Gastroenterology, Firat University Medical Faculty, Elazig, Turkey
| | - M Gul
- Department of Histology and Embryology, Inonu University Medical Faculty, Malatya, Turkey
| | - B Otlu
- Department of Microbiology, Inonu University Medical Faculty, Malatya, Turkey
| | - I Temel
- Department of Biochemistry, Inonu University Medical Faculty, Malatya, Turkey
| | - S Gursoy
- Department of Biochemistry, Inonu University Medical Faculty, Malatya, Turkey
| | - R Dertli
- Department of Internal Medicine, Inonu University Medical Faculty, Malatya, Turkey
| | - EB Selcuk
- Department of Family Medicine, Inonu University Medical Faculty, Malatya, Turkey
| | - I Yilmaz
- Department of Pharmacology, Inonu University Pharmacy Faculty, Malatya, Turkey
| | - T Kilis
- Department of Biochemistry, Inonu University Pharmacy Faculty, Malatya, Turkey
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Oudemans-van Straaten HM, Spoelstra-de Man AM, de Waard MC. Vitamin C revisited. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:460. [PMID: 25185110 PMCID: PMC4423646 DOI: 10.1186/s13054-014-0460-x] [Citation(s) in RCA: 190] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This narrative review summarizes the role of vitamin C in mitigating oxidative injury-induced microcirculatory impairment and associated organ failure in ischemia/reperfusion or sepsis. Preclinical studies show that high-dose vitamin C can prevent or restore microcirculatory flow impairment by inhibiting activation of nicotinamide adenine dinucleotide phosphate-oxidase and inducible nitric oxide synthase, augmenting tetrahydrobiopterin, preventing uncoupling of oxidative phosphorylation, and decreasing the formation of superoxide and peroxynitrite, and by directly scavenging superoxide. Vitamin C can additionally restore vascular responsiveness to vasoconstrictors, preserve endothelial barrier by maintaining cyclic guanylate phosphatase and occludin phosphorylation and preventing apoptosis. Finally, high-dose vitamin C can augment antibacterial defense. These protective effects against overwhelming oxidative stress due to ischemia/reperfusion, sepsis or burn seems to mitigate organ injury and dysfunction, and promote recovery after cardiac revascularization and in critically ill patients, in the latter partially in combination with other antioxidants. Of note, several questions remain to be solved, including optimal dose, timing and combination of vitamin C with other antioxidants. The combination obviously offers a synergistic effect and seems reasonable during sustained critical illness. High-dose vitamin C, however, provides a cheap, strong and multifaceted antioxidant, especially robust for resuscitation of the circulation. Vitamin C given as early as possible after the injurious event, or before if feasible, seems most effective. The latter could be considered at the start of cardiac surgery, organ transplant or major gastrointestinal surgery. Preoperative supplementation should consider the inhibiting effect of vitamin C on ischemic preconditioning. In critically ill patients, future research should focus on the use of short-term high-dose intravenous vitamin C as a resuscitation drug, to intervene as early as possible in the oxidant cascade in order to optimize macrocirculation and microcirculation and limit cellular injury.
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Mocan A, Vlase L, Vodnar DC, Bischin C, Hanganu D, Gheldiu AM, Oprean R, Silaghi-Dumitrescu R, Crișan G. Polyphenolic content, antioxidant and antimicrobial activities of Lycium barbarum L. and Lycium chinense Mill. leaves. Molecules 2014; 19:10056-73. [PMID: 25014533 PMCID: PMC6271913 DOI: 10.3390/molecules190710056] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 06/16/2014] [Accepted: 07/04/2014] [Indexed: 01/14/2023] Open
Abstract
This study was performed to evaluate the in vitro antioxidant and antimicrobial activities and the polyphenolic content of Lycium barbarum L. and L. chinense Mill. leaves. The different leave extracts contain important amounts of flavonoids (43.73 ± 1.43 and 61.65 ± 0.95 mg/g, respectively) and showed relevant antioxidant activity, as witnessed by the quoted methods. Qualitative and quantitative analyses of target phenolic compounds were achieved using a HPLC-UV-MS method. Rutin was the dominant flavonoid in both analysed species, the highest amount being registered for L. chinense. An important amount of chlorogenic acid was determined in L. chinense and L. barbarum extracts, being more than twice as high in L. chinense than in L. barbarum. Gentisic and caffeic acids were identified only in L. barbarum, whereas kaempferol was only detected in L. chinense. The antioxidant activity was evaluated by DPPH, TEAC, hemoglobin ascorbate peroxidase activity inhibition (HAPX) and inhibition of lipid peroxidation catalyzed by cytochrome c assays revealing a better antioxidant activity for the L. chinense extract. Results obtained in the antimicrobial tests revealed that L. chinense extract was more active than L. barbarum against both Gram-positive and Gram-negative bacterial strains. The results suggest that these species are valuable sources of flavonoids with relevant antioxidant and antimicrobial activities.
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Affiliation(s)
- Andrei Mocan
- Department of Pharmaceutical Botany, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania.
| | - Laurian Vlase
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania.
| | - Dan Cristian Vodnar
- Department of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Manăştur Street, Cluj-Napoca 400372, Romania.
| | - Cristina Bischin
- Department of Chemistry and Chemical Engineering Babeș-Bolyai University, 11 A. Janos Street, Cluj-Napoca 400028, Romania.
| | - Daniela Hanganu
- Department of Pharmacognosy, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania.
| | - Ana-Maria Gheldiu
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania.
| | - Radu Oprean
- Department of Analytical Chemistry and Instrumental Analysis, Iuliu Hațieganu University of Medicine and Pharmacy, 4 L. Pasteur Street, Cluj-Napoca 400010, Romania.
| | - Radu Silaghi-Dumitrescu
- Department of Chemistry and Chemical Engineering Babeș-Bolyai University, 11 A. Janos Street, Cluj-Napoca 400028, Romania.
| | - Gianina Crișan
- Department of Pharmaceutical Botany, Iuliu Hațieganu University of Medicine and Pharmacy, 12 I. Creangă Street, Cluj-Napoca 400010, Romania.
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Pierre JF, Heneghan AF, Lawson CM, Wischmeyer PE, Kozar RA, Kudsk KA. Pharmaconutrition Review. JPEN J Parenter Enteral Nutr 2013; 37:51S-65S. [DOI: 10.1177/0148607113493326] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Joseph F. Pierre
- Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
| | - Aaron F. Heneghan
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
| | - Christy M. Lawson
- Department of Surgery, University of Tennessee Medical Center, Knoxville
| | | | - Rosemary A. Kozar
- Department of Surgery, University of Texas–Houston Health Science Center, Houston
| | - Kenneth A. Kudsk
- Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
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Fouad AA, Jresat I. Therapeutic potential of cannabidiol against ischemia/reperfusion liver injury in rats. Eur J Pharmacol 2011; 670:216-23. [DOI: 10.1016/j.ejphar.2011.08.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Revised: 08/16/2011] [Accepted: 08/27/2011] [Indexed: 12/17/2022]
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A review of botanical characteristics, phytochemistry, clinical relevance in efficacy and safety of Lycium barbarum fruit (Goji). Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.03.027] [Citation(s) in RCA: 331] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang Z, Liu X, Zhang X, Liu J, Hao Y, Yang X, Wang Y. Comparative evaluation of the antioxidant effects of the natural vitamin C analog 2-O-β-D-glucopyranosyl-L-ascorbic acid isolated from Goji berry fruit. Arch Pharm Res 2011; 34:801-10. [PMID: 21656366 DOI: 10.1007/s12272-011-0514-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2010] [Revised: 09/06/2010] [Accepted: 09/30/2010] [Indexed: 11/24/2022]
Abstract
2-O-β-D-Glucopyranosyl-L-ascorbic acid (AA-2βG) is a natural derivative of vitamin C (Lascorbic acid, AA) isolated from Goji berry (Lycium barbarum L.) fruit. We evaluated the antioxidant activities of AA-2βG and AA using in vitro and in vivo model systems. In vitro radical scavenging assays demonstrated that AA-βG was capable of scavenging 1,1-diphenyl-2-picryl-hydrazyl and hydroxyl peroxide and inhibiting H(2)O(2)-induced hemolysis better than AA. AA-2βG and AA had similar hydroxyl radical scavenging capabilities, but AA-2βG was incapable of scavenging superoxide anion radicals, and its capacity to scavenge nitrite (NO(2) (-)) was lower than that of AA. The overall in vitro reduction capability of AA-2βG was also significantly lower than that of AA. Moreover, in vivo studies demonstrated that AA-2βG was capable of protecting the liver against carbon tetrachloride-induced acute liver injury in mice. These results suggest that AA-2βG is an important antioxidant component of Goji berry fruit, which may share similar but distinct antioxidant mechanistic properties with AA. This study furthers our understanding of the mechanisms of Goji berry fruit pharmacological activities on antiaging and antitumor properties as a traditional medicine and dietary supplement.
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Affiliation(s)
- Ziping Zhang
- College of Life Science, Ningxia University, Yinchuan, Ningxia 750021, China
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