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Preparation and evaluation of ascorbyl glucoside and ascorbic acid solid in oil nanodispersions for corneal epithelial wound healing. Int J Pharm 2022; 627:122227. [PMID: 36155791 DOI: 10.1016/j.ijpharm.2022.122227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/03/2022] [Accepted: 09/18/2022] [Indexed: 11/20/2022]
Abstract
The objective of this study was to develop and evaluate an effective topical formulation to promote corneal epithelial wound healing. Ascorbyl glucoside (AA-2G), a stable prodrug of AA, was formulated in solid in oil (S/O) nanodispersions by emulsifying AA-2G solutions in cyclohexane using Span 85 as an emulsifying agent and freeze-drying emulsions to produce AA-2G - surfactant complex. The complexes were then dispersed in castor oil to produce S/O nanodispersions which were evaluated in terms of their particle size, polydispersity index, encapsulation efficiency, morphology, physical stability as well as the transcorneal permeation and accumulation of AA-2G. The same preparation procedure was used to prepare S/O nanodispersions of AA. S/O nanodispersions of AA and AA-2G were formulated into oily drops that were tested for efficacy in promoting wound healing after corneal epithelial depredation. AA-2G was loaded efficiently in S/O nanodispersions (EE > 99%) in the form of spherical nanoparticles. S/O nanodispersions were physically stable and resulted in improved permeation (18x) and accumulation (7x) of AA-2G in transcorneal diffusion experiments in comparison to AA-2G solutions. Oily eye drops of AA-2G and AA showed no irritation and significant improvement in epithelial healing in vivo in comparison to AA-2G and AA solutions.
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Preparation and Characterization of a Hybrid Complex of Cyclodextrin-Based Metal-Organic Frameworks-1 and Ascorbic Acid Derivatives. MATERIALS 2021; 14:ma14237309. [PMID: 34885460 PMCID: PMC8658738 DOI: 10.3390/ma14237309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 12/05/2022]
Abstract
Cyclodextrin-based metal–organic frameworks-1 (CD-MOF-1) prepared using potassium hydroxide, ethanol, and γ-cyclodextrin (γ-CD) has been reported as a new type of MOF for the development of pharmaceutical formulations. The present study aimed to investigate the physicochemical properties of ascorbic acid derivatives (L-ascorbyl 6-palmitate (ASCP); L-ascorbyl 2,6-palmitate (ASCDP)) complexed with CD-MOF-1 by a solvent evaporation method. Powder X-ray diffraction revealed that the crystal diffraction pattern of CD-MOF-1 changed from α-type to β-type when prepared by a solvent evaporation method. For ASCP/CD-MOF-1 = 1/2 and ASCDP/CD-MOF-1 = 1/4 evaporated samples, the crystal diffraction peaks derived from ASCP and ASCDP disappeared, indicating a β-like behavior. Differential scanning calorimetry results revealed that the endothermic peaks of evaporated samples (ASCP/CD-MOF-1 = 1/2 and ASCDP/CD-MOF-1 = 1/4) were not detected due to melting. Furthermore, intermolecular interactions were observed in the hydrogen bonds between the CH groups of the side chains of ASCP and ASCDP and the OH group of CD-MOF-1 in (ASCP/CD-MOF-1 = 1/2) and EVP (ASCDP/CD-MOF-1 = 1/4), based on the near-infrared absorption spectroscopy analysis. CD-MOF-1 did not form inclusion complexes with the lactone rings of ASCP and ASCDP, but with the lipophilic side chains. These results suggested that CD-MOF-1 may be useful in preparing novel drug carriers for ASCP and ASCDP.
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Kawakami K, Yamada K, Takeshita H, Yamada T, Nomura M. Antihypertensive effect of lemon juice squeezed residue on spontaneously hypertensive rats. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2021. [DOI: 10.3136/fstr.27.521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kohei Kawakami
- Department of Experimental Animals, Interdisciplinary Center for Science Research, Organization for Research and Academic Information, Shimane Univ
| | - Kazuo Yamada
- Department of Legal Medicine, School of Medicine, Shimane Univ
| | - Haruo Takeshita
- Department of Legal Medicine, School of Medicine, Shimane Univ
| | - Takaya Yamada
- Department of Experimental Animals, Interdisciplinary Center for Science Research, Organization for Research and Academic Information, Shimane Univ
| | - Masato Nomura
- Department of Biotechnology and Chemistry, Faculty of Engineering, Kinki Univ
- Tech Corporation Co., Ltd
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Onoda H, Inoue Y, Ezawa T, Murata I, Chantadee T, Limmatvapirat S, Oguchi T, Kanamoto I. Preparation and characterization of triamterene complex with ascorbic acid derivatives. Drug Dev Ind Pharm 2020; 46:2032-2040. [PMID: 33104388 DOI: 10.1080/03639045.2020.1842439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to prepare solid dispersions of triamterene (TRT) with ascorbic acid (AA) or ascorbic acid 2 glucoside (AA2G) and to evaluate their physical properties. Solid dispersions were prepared by dissolving each sample in an organic solvent and evaporation (EVP). Powder X-ray diffraction (PXRD) revealed a halo pattern for EVP1 (AA/TRT = 1/1) and EVP2 (AA2G/TRT = 1/1). In differential scanning calorimetry (DSC), endothermic peaks due to the melting of TRT and AA disappeared for EVP1 (AA/TRT = 1/1), and the melting peaks of TRT and AA2G disappeared for EVP2 (AA2G/TRT = 1/1). Fourier transform infrared (FT-IR) spectroscopy revealed broadened peaks for EVP1 (AA/TRT = 1/1) and EVP2 (AA2G/TRT = 1/1) due to the hydroxyl groups (-OH) of AA and the amino groups (-NH2) of TRT and also revealed a peak shift due to the pteridine skeleton (C = N) of TRT. In near-infrared absorption (NIR) spectroscopy, peaks due to the hydroxyl groups (-OH) of AA and AA2G were found for EVP1 (AA/TRT = 1/1) and EVP2 (AA2G/TRT = 1/1), respectively. A peak due to the amino groups (-NH2) was evident. This suggested the formation of an evaporation, in which TRT interacted with AA or AA2G. In the dissolution test, the dissolved fraction of TRT alone after 3 min was 30%, whereas the fractions were enhanced to approximately 90% for EVP1 (AA/TRT = 1/1) and EVP2 (AA2G/TRT= 1/1). Results confirmed that dissolution properties were improved as a result of complex formation. The above findings indicated improvement the dissolution properties of TRT.
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Affiliation(s)
- Hirotaka Onoda
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Yutaka Inoue
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Toshinari Ezawa
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Isamu Murata
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Takron Chantadee
- Faculty of Pharmacy, Silpakorn University, Nakhon Pathom, Thailand
| | | | - Toshio Oguchi
- Graduate School of Medicine, University of Yamanashi, Chuo-city, Japan
| | - Ikuo Kanamoto
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
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Therapeutic Perspective of Vitamin C and Its Derivatives. Antioxidants (Basel) 2019; 8:antiox8080247. [PMID: 31357509 PMCID: PMC6721080 DOI: 10.3390/antiox8080247] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/18/2019] [Accepted: 07/20/2019] [Indexed: 01/03/2023] Open
Abstract
l-Ascorbic acid (ASA), vitamin C, is a ubiquitous carbohydrate-like compound that has an essential role in a number of cellular processes, such as collagen synthesis, cellular oxidation, and various hydroxylation reactions. ASA is a biomolecule of critical importance for protection of cellular components against oxidative damage caused by toxic free radicals and other reactive oxygen species (ROS) that are involved in the development of various types of chronic diseases. Vitamin C has a switchover role from being an antioxidant in physiological conditions to a prooxidant under pathologic conditions. Moreover, some l-ascorbic acid derivatives exhibit strong and selective antitumor and antiviral activity. This review emphasizes the advances on diverse and potent biological profiles of l-ascorbic acid and its derivatives, and their perspective in the development of new bioactive chemical entities in the future. The work is primarily addressed at antioxidant, anticancer, and antiviral potencies of l-ascorbic acid and compounds containing its butenolide structural motif.
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Nomura S, Lee WJ, Konishi M, Saitoh T, Murata M, Ohtsu N, Shimotori Y, Kohari Y, Nagata Y, Chiou TY. Characteristics of Japanese Mint Extracts Obtained by Subcritical-water Treatment. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2019. [DOI: 10.3136/fstr.25.695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Shiori Nomura
- Department of Biotechnology and Environmental Chemistry, Kitami Institute of Technology
| | - Wei-Ju Lee
- School of Food Safety, Taipei Medical University
| | - Masaaki Konishi
- School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
| | - Tohru Saitoh
- School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
| | - Miki Murata
- School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
| | - Naofumi Ohtsu
- School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
| | - Yasutaka Shimotori
- School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
| | - Yoshihito Kohari
- School of Earth, Energy and Environmental Engineering, Kitami Institute of Technology
| | | | - Tai-Ying Chiou
- School of Regional Innovation and Social Design Engineering, Kitami Institute of Technology
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Sampaio BFB, Nogueira BG, Souza MIL, Silva EVDCE, Zúccari CESN. Effects of ascorbic acid 2-glucoside and alpha-tocopherol on the characteristics of equine spermatozoa stored at 5°C. Anim Sci J 2018; 89:1415-1423. [DOI: 10.1111/asj.12944] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/27/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Breno Fernandes Barreto Sampaio
- Animal Science Post Graduate Program; School of Veterinary Medicine and Animal Science; Federal University of Mato Grosso do Sul; Campo Grande Brazil
| | - Bruno Gomes Nogueira
- Animal Science Post Graduate Program; School of Veterinary Medicine and Animal Science; Federal University of Mato Grosso do Sul; Campo Grande Brazil
| | - Maria Inês Lenz Souza
- Biological Science and Health Center; Federal University of Mato Grosso do Sul; Campo Grande Brazil
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Usefulness of Urea as a Means of Improving the Solubility of Poorly Water-Soluble Ascorbyl Palmitate. INTERNATIONAL JOURNAL OF MEDICINAL CHEMISTRY 2017; 2017:4391078. [PMID: 29234526 PMCID: PMC5695080 DOI: 10.1155/2017/4391078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/12/2017] [Accepted: 10/19/2017] [Indexed: 11/20/2022]
Abstract
The aim of this study was to evaluate complexes of L-ascorbyl palmitate (ASCP) and urea (UR). This evaluation involved differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), near-infrared spectroscopy (NIR), a solubility test, a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging test, and a mushroom tyrosinase inhibition assay. Physicochemical evaluation revealed that ASCP/UR complexes form at a molar ratio of 1/12. The solubility test revealed that ASCP/UR complexes had increased solubility compared to ASCP. The DPPH radical scavenging test and mushroom tyrosinase inhibition assay revealed that the activity of ASCP/UR complexes was not impaired by complex formation. These results are probably due to the tetragonal crystal system of UR changing to a hexagonal crystal system and interaction with the alkyl group of ASCP.
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Qin Y, Yang S, Xu J, Xia C, Li X, An L, Tian J. Deep insemination with sex-sorted Cashmere goat sperm processed in the presence of antioxidants. Reprod Domest Anim 2017; 53:11-19. [PMID: 29205543 DOI: 10.1111/rda.13045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 07/05/2017] [Indexed: 11/28/2022]
Abstract
Flow cytometrically sex-sorted sperm have been widely used for improving reproductive management in the dairy industry. However, the industrial application of this technology in other domestic species is largely limited by the lower fertility after insemination. The aim of this study was to investigate effects of antioxidant supplementation during the sex-sorting and freezing process on the quality and functions of sorted sperm from Liaoning Cashmere goats. We tested the effects of antioxidant supplementation during sex-sorting and freezing process, including ascorbic acid-2-glucoside AA-2G, glutathione, melatonin and vitamin C (VC), on the quality and functions of sex-sorted fresh and frozen-thawed sperm. Based on these experiments, we performed deep insemination with sex-sorted sperm using our improved strategy, in comparison to unsorted sperm. In Experiment 1, compared with control group and other antioxidants, AA-2G supplementation significantly alleviated the degradation of motility and viability of fresh sperm after sorting and showed the highest percentage of sperm with normal morphology. In addition, AA-2G supplementation showed an evident protection against the sorting process-induced membrane and acrosome damage. In Experiment 2, AA-2G supplementation was most effective in protecting motility, while melatonin supplementation appears to facilitate the degradation of quality of frozen-thawed sex-sorted sperm. In Experiment 3, we performed deep insemination with sperm that were sorted and frozen in the presence of AA-2G and obtained a satisfying pregnancy rate comparable to that from unsorted sperm. The results showed that AA-2G supplementation efficiently protects quality and function of both fresh and frozen-thawed sex-sorted sperm of Cashmere goats, thus obtaining a satisfying pregnancy outcome.
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Affiliation(s)
- Y Qin
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - S Yang
- College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China
| | - J Xu
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - C Xia
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,College of Life Science, Jilin Agricultural University, Changchun, China
| | - X Li
- Research Center for Animal Genetic Resources of Mongolia Plateau, College of Life Science, Inner Mongolia University, Hohhot, China
| | - L An
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - J Tian
- College of Animal Science and Technology, China Agricultural University, Beijing, China
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Structural evidence for the DPPH radical-scavenging mechanism of 2-O-α-d-glucopyranosyl-l-ascorbic acid. Bioorg Med Chem 2017; 25:5303-5310. [DOI: 10.1016/j.bmc.2017.07.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 11/27/2022]
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11
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Effects of palmitoyl-KVK-L-ascorbic acid on skin wrinkles and pigmentation. Arch Dermatol Res 2017; 309:397-402. [DOI: 10.1007/s00403-017-1731-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 02/23/2017] [Accepted: 03/01/2017] [Indexed: 10/20/2022]
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12
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Nematbakhsh M, Pezeshki Z, Eshraghi Jazi F, Mazaheri B, Moeini M, Safari T, Azarkish F, Moslemi F, Maleki M, Rezaei A, Saberi S, Dehghani A, Malek M, Mansouri A, Ghasemi M, Zeinali F, Zamani Z, Navidi M, Jilanchi S, Shirdavani S, Ashrafi F. Cisplatin-Induced Nephrotoxicity; Protective Supplements and Gender Differences. Asian Pac J Cancer Prev 2017; 18:295-314. [PMID: 28345324 PMCID: PMC5454720 DOI: 10.22034/apjcp.2017.18.2.295] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cisplatin (CDDP) has been widely used as a chemotherapeutic agent for solid tumors. The most common side effect of CDDP is nephrotoxicity, and many efforts have been made in the laboratory and the clinic to employ candidate adjuvants to CDDP to minimize this adverse influence. Many synthetic and herbal antioxidants as well as trace elements have been investigated for this purpose in recent years and a variety of positive and negative results have been yielded. However, no definitive supplement has so far been proposed to prevent CDDP-induced nephrotoxicity; however, this condition is gender related and the sex hormone estrogen may protect the kidney against CDDP damage. In this review, the results of research related to the effect of different synthetic and herbal antioxidants supplements are presented and discussed with suggestions included for future work.
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Affiliation(s)
- Mehdi Nematbakhsh
- Water and Electrolytes Research Center, Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran. *
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Guan J, Takai R, Toraya K, Ogawa T, Muramoto K, Mohri S, Ishikawa D, Fujii T, Chi H, Cho SJ. Effects of Alkaline Deamidation on the Chemical Properties of Rice Bran Protein. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2017. [DOI: 10.3136/fstr.23.697] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jingtao Guan
- Graduate School of Life Sciences, Tohoku University
| | | | - Kohei Toraya
- Graduate School of Life Sciences, Tohoku University
| | | | | | - Satoshi Mohri
- School of Food, Agricultural and Environmental Sciences, Miyagi University
| | | | - Tomoyuki Fujii
- Graduate School of Agricultural Science, Tohoku University
| | - Hyun Chi
- Life Ingredient & Material Research Institute
| | - Seong-Jun Cho
- Life Ingredient & Material Research Institute
- College of Agriculture and Life Sciences, Kangwon National University
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New Aminonaphthoquinone from the Sea Urchins Strongylocentrotus pallidus and Mesocentrotus nudus. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100631] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The aminonaphthoquinone, spinamine E (5), was isolated for the first time from the sea urchins Strongylocentrotus pallidus (Sars G.O., 1872) and Mesocentrotus nudus (A. Agassiz, 1864). The structure of 5 was elucidated as 2-amino-3,5,6,7,8-pentahydroxy-l,4-naphthoquinone using 1D 1H-, 13C- and 2D NMR procedures, and HR-ESI mass-spectrometric data of 5 and its trimethyl ether. Spinamine E, as well as two other aminonaphthoquinones of sea urchins, echinamines A (2) and B (3), along with their hydroxylated analogues, spinochrome E (4) and echinochrome A (1), were tested for their ability to scavenge the stable DPPH radical and to inhibit lipid peroxidation. All investigated naphthoquinones obtained from the sea urchins showed a high antiradical activity, which was up to 1.5 times higher than that of α-tocopherol. Echinamine B showed the highest scavenging effect (EC50 = 6.5-10−6 M); this effect decreases in the series 3>5>1>2>4>α-tocopherol. In a lipid peroxidation inhibition testing model, echinamine B and spinamine E showed the highest inhibitory effect. The stability of compounds 1-5 in weakly alkaline solutions was evaluated.
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Sverdlov RL, Khrishchanovich AV, Brinkevich SD, Shadyro OI. Interaction of tryptophan and its derivatives with oxygen- and nitrogen-centered radicals. HIGH ENERGY CHEMISTRY 2015. [DOI: 10.1134/s0018143915020101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Tai A, Fukunaga K, Ohno A, Ito H. Antioxidative properties of ascorbigen in using multiple antioxidant assays. Biosci Biotechnol Biochem 2014; 78:1723-30. [PMID: 25273138 DOI: 10.1080/09168451.2014.932668] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The antioxidative properties of ascorbigen, one of the major indole-derived compounds of Brassica vegetables, were systematically evaluated using multiple assay systems with comparison to the well-known antioxidants ascorbic acid and Trolox. We first performed assays using model radicals, DPPH radical, galvinoxyl radical, and ABTS radical cation (ABTS(•+)). Ascorbigen showed stronger activity than that of ascorbic acid in the ABTS(•+)-scavenging assay but showed no activity in the DPPH radical- and galvinoxyl radical-scavenging assays. In the ABTS(•+)-scavenging assay, the indole moiety of ascorbigen contributed to scavenging of the radicals to produce indole-3-aldehyde as one of the final reaction products. The activity of ascorbigen was then evaluated by an oxygen radical absorbance capacity assay and an oxidative hemolysis inhibition assay using physiologically relevant peroxyl radicals, AAPH-derived radicals. Ascorbigen showed much stronger antioxidant activity than did ascorbic acid and Trolox. Therefore, antioxidant activity of ascorbigen might be more beneficial than has been thought for daily health care.
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Affiliation(s)
- Akihiro Tai
- a Faculty of Life and Environmental Sciences , Prefectural University of Hiroshima , Shobara , Japan
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Tangkhavanich B, Kobayashi T, Adachi S. Effects of repeated treatment on the properties of rice stem extract using subcritical water, ethanol, and their mixture. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.10.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Extraction of Defatted Rice Bran with Subcritical Aqueous Acetone. Biosci Biotechnol Biochem 2014; 76:1535-9. [DOI: 10.1271/bbb.120286] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Antioxidative Properties of Vanillic Acid Esters in Multiple Antioxidant Assays. Biosci Biotechnol Biochem 2014; 76:314-8. [DOI: 10.1271/bbb.110700] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Characteristics and Antioxidative Activity of the Acetone-Soluble and -Insoluble Fractions of a Defatted Rice Bran Extract Obtained by Using an Aqueous Organic Solvent under Subcritical Conditions. Biosci Biotechnol Biochem 2014; 77:624-30. [DOI: 10.1271/bbb.120858] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hanada Y, Iomori A, Ishii R, Gohda E, Tai A. Protection of free radical-induced cytotoxicity by 2-O-α-D-glucopyranosyl-L-ascorbic acid in human dermal fibroblasts. Biosci Biotechnol Biochem 2014; 78:301-6. [PMID: 25036685 DOI: 10.1080/09168451.2014.882756] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The stable ascorbic acid (AA) derivative, 2-O-α-D-glucopyranosyl-L-ascorbic acid (AA-2G), exhibits vitamin C activity after enzymatic hydrolysis to AA. The biological activity of AA-2G per se has not been studied in detail, although AA-2G has been noted as a stable source for AA supply. The protective effect of AA-2G against the oxidative cell death of human dermal fibroblasts induced by incubating with 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH) for 24 h was investigated in this study. AA-2G showed a significant protective effect against the oxidative stress in a concentration-dependent manner. AA-2G did not exert a protective effect during the initial 12 h of incubation, but had a significant protective effect in the later part of the incubation period. Experiments using a α-glucosidase inhibitor and comparative experiments using a stereoisomer of AA-2G confirmed that AA-2G had a protective effect against AAPH-induced cytotoxicity without being converted to AA. Our results provide an insight into the efficacy of AA-2G as a biologically interesting antioxidant and suggest the practical use of AA-2G even before being converted into AA as a beneficial antioxidant.
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Affiliation(s)
- Yukako Hanada
- a Division of Pharmaceutical Sciences , Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama 700-8530 , Japan
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Properties of rice stem extracts obtained by using subcritical fluids. Biosci Biotechnol Biochem 2013; 77:2112-6. [PMID: 24096678 DOI: 10.1271/bbb.130485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rice stems were subjected to a subcritical fluid treatment at 230 °C, using ethanol or acetone at a dilution of 0-100% in water. The obtained extracts were determined for their yield, carbohydrate content, phenolic content, DPPH radical scavenging ability, and color. The highest yield and carbohydrate content were achieved with the subcritical 20% (v/v) organic solvent, while the highest phenolic content was obtained with subcritical 80% (v/v) acetone. The highest radical scavenging ability was achieved with subcritical 60% (v/v) ethanol and 80% (v/v) acetone. The lightness of the extracts obtained with subcritical ethanol and acetone was negatively correlation with their radical scavenging ability (R=-0.85). The relationship between the lightness and phenolic content of the extracts was not significant, suggesting that other substances in the extract could also possess radical scavenging ability.
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Li F, Chen B, Ping Z, Jia X, Guo X, Xiao L, Liu L. Synthesis of 6-O-poly(ϵ-caprolactone)-L-ascorbic acid and its controlled release from supramolecular polymer micelles. Macromol Biosci 2013; 14:280-8. [PMID: 23966285 DOI: 10.1002/mabi.201300197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/21/2013] [Indexed: 12/20/2022]
Abstract
Lipophilic 6-O-poly (ϵ-caprolactone)-L-ascorbic acid (AA-6-PCL) is synthesized through ROP of ϵ-caprolactone (CL). The number of repeating CL units in the polymer chain varies from 6 to 19. AA-6-PCL loaded supramolecular polymer micelles (SMPMs) are constructed with β-cyclodextrin (β-CD) and PCL as blocks. Transmission electron microscopy images show a nanospheric morphology of the micelles with a size range of 43.3 ± 5.0 nm. The drug loading contents are 22.53-39.23% for AA-6-PCL. AA-6-PCL exhibits high radical scavenging capacity (93.96-96.73%) and efficient scavenging potency, and a cytotoxicity study proves the excellent cytocompatibility of AA-6-PCL loaded β-CD/PCL SMPMs, which altogether herald their potential application in the study of the induced pluripotent stem cells.
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Affiliation(s)
- Feifei Li
- Department of Polymer Science, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
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Stability studies of ascorbic acid 2-glucoside in cosmetic lotion using surface response methodology. Bioorg Med Chem Lett 2013; 23:1583-7. [DOI: 10.1016/j.bmcl.2013.01.111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 01/12/2013] [Accepted: 01/23/2013] [Indexed: 11/23/2022]
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26
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Kang S, Moon Y, Ji T, Ha S, Lim DH, Ham SW. Orally Applied Novel Organogermanium Improves Skin Inflammation in NC/Nga Mice with Atopic Dermatitis. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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TANGKHAVANICH B, OISHI Y, KOBAYASHI T, ADACHI S. Properties of Rice Stem Extracts Obtained by Subcritical Water/Ethanol Treatment. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2013. [DOI: 10.3136/fstr.19.547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Xia C, Xia W, Yang S, An L, Li X, Wu Z, Zhang J, Wang Z, Tian J. Effect of antioxidant supplementation on function and fertility of sex-sorted boar spermatozoa. Anim Reprod Sci 2012; 136:108-14. [DOI: 10.1016/j.anireprosci.2012.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 10/12/2012] [Accepted: 10/20/2012] [Indexed: 10/27/2022]
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29
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Functions, applications and production of 2-O-d-glucopyranosyl-l-ascorbic acid. Appl Microbiol Biotechnol 2012; 95:313-20. [DOI: 10.1007/s00253-012-4150-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 05/01/2012] [Accepted: 05/02/2012] [Indexed: 02/04/2023]
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SHA Y, CHIOU TY, KOBAYASHI T, ADACHI S. Evaluation of Antioxidative Activity for Extracts from Defatted Rice Bran Using 5-Axe Cobweb Chart. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2012. [DOI: 10.3136/fstr.18.789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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CHIOU TY, NEOH TL, KOBAYASHI T, ADACHI S. Properties of Extract Obtained from Defatted Rice Bran by Extraction with Aqueous Ethanol under Subcritical Conditions. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2012. [DOI: 10.3136/fstr.18.37] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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32
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Properties of Rice Straw Extract after Subcritical Water Treatment. Biosci Biotechnol Biochem 2012; 76:1146-9. [DOI: 10.1271/bbb.110983] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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VIRIYA-EMPIKUL N, WIBOONSIRIKUL J, KOBAYASHI T, ADACHI S. Effects of Temperature and Flow Rate on Subcritical-water Extraction from Defatted Rice Bran. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2012. [DOI: 10.3136/fstr.18.333] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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34
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Wang R, Neoh TL, Kobayashi T, Adachi S. Antioxidative Capacity of the Degradation Products of Glucuronic and Galacturonic Acid from Subcritical Water Treatment. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201000533] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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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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Chandrasekharan DK, Khanna PK, Kagiya TV, Nair CKK. Synthesis of Nanosilver Using a Vitamin C Derivative and Studies on Radiation Protection. Cancer Biother Radiopharm 2011; 26:249-57. [DOI: 10.1089/cbr.2010.0862] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Nandi S, Altenbach HJ, Jakob B, Lange K, Ihizane R, Schneider MP. A Novel Class of Organo- (Hydro-) Gelators Based on Ascorbic Acid. Org Lett 2011; 13:1980-3. [DOI: 10.1021/ol2003622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sukhendu Nandi
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Hans-Josef Altenbach
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Bernd Jakob
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Karsten Lange
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Rachid Ihizane
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
| | - Manfred P. Schneider
- FB C - Organische Chemie, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
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Evaluation of antioxidant activity of vanillin by using multiple antioxidant assays. Biochim Biophys Acta Gen Subj 2011; 1810:170-7. [DOI: 10.1016/j.bbagen.2010.11.004] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/10/2010] [Accepted: 11/12/2010] [Indexed: 12/28/2022]
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WANG R, KOBAYASHI T, ADACHI S. Degradation of N-Acetyl-D-glucosamine and D-Glucosamine in Subcritical Water and Properties of the Degradation Products. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2011. [DOI: 10.3136/fstr.17.273] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Oh CW, Li M, Kim EH, Park JS, Lee JC, Ham SW. Antioxidant and Radical Scavenging Activities of Ascorbic Acid Derivatives Conjugated with Organogermanium. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.12.3513] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Tai A, Mori T, Urushihara M, Ito H, Kawasaki D, Yamamoto I. Intramolecular acyl migration and enzymatic hydrolysis of a novel monoacylated ascorbic acid derivative, 6-O-dodecanoyl-2-O-α-d-glucopyranosyl-l-ascorbic acid. Bioorg Med Chem 2010; 18:6179-83. [DOI: 10.1016/j.bmc.2010.06.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 06/05/2010] [Accepted: 06/08/2010] [Indexed: 11/15/2022]
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Cheng LX, Jin XL, Teng QF, Chang J, Yao XJ, Dai F, Qian YP, Tang JJ, Li XZ, Zhou B. Antioxidant activity of α-pyridoin and its derivatives: possible mechanism. Org Biomol Chem 2010; 8:1058-63. [DOI: 10.1039/b922673g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Chandrasekharan DK, Kagiya TV, Nair CKK. Radiation protection by 6-palmitoyl ascorbic acid-2-glucoside: studies on DNA damage in vitro, ex vivo, in vivo and oxidative stress in vivo. JOURNAL OF RADIATION RESEARCH 2009; 50:203-212. [PMID: 19384055 DOI: 10.1269/jrr.08090] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A palmitoyl derivative of ascorbic acid 2-glucoside, 6-palmitoyl ascorbic acid-2-glucoside (PAsAG), which possess good antioxidant properties, is examined for radioprotection in vitro, ex vivo and in vivo models. PAsAG protected plasmid DNA from gamma-radiation induced damages under in vitro conditions. Presence of 1.6 mM PAsAG inhibited the disappearance of ccc (covalently closed circular) form of plasmid pBR322 with a dose modifying factor of 1.5. Comet assay studies on mouse spleen cells exposed to 6 Gy gamma-radiation (ex vivo) in presence and absence of PAsAG revealed that cellular DNA was effectively protected by this compound from radiation induced damages. Oral administration of 80 mg/kg body weight of PAsAG to mice 1 hour prior to 6 Gy whole body gamma-radiation exposure, efficiently protected cellular DNA in tissues such as spleen, bone marrow and blood, from radiation induced damages as indicated by alkaline comet assay. Oxidative stress in tissues such as liver and brain of mice, following whole body exposure to various doses of gamma-radiation (2-8 Gy), monitored as levels of GSH and peroxidation of lipids, were found considerably reduced when PAsAG was orally administered (80 mg/kg body weight) to the mice one hour prior to the radiation exposure. PAsAG administration improved the per cent survival of mice following exposure to 10 Gy whole body gamma-radiation. Thus PAsAG could act as a radioprotector under in vitro, ex vivo and in vivo conditions of ionizing-radiation exposure.
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Kaji H, Inukai Y, Maiguma T, Ono H, Teshima D, Hiramoto K, Makino K. Radical scavenging activity of bisbenzylisoquinoline alkaloids and traditional prophylactics against chemotherapy-induced oral mucositis. J Clin Pharm Ther 2009; 34:197-205. [DOI: 10.1111/j.1365-2710.2008.00993.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Watanabe Y, Nagai M, Yamanaka K, Jose K, Nomura M. Synthesis of lauroyl phenolic glycoside by immobilized lipase in organic solvent and its antioxidative activity. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2008.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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46
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Promotion of IL-4- and IL-5-dependent differentiation of anti-mu-primed B cells by ascorbic acid 2-glucoside. Immunol Lett 2009; 122:219-26. [PMID: 19201381 DOI: 10.1016/j.imlet.2009.01.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 01/05/2009] [Accepted: 01/18/2009] [Indexed: 11/23/2022]
Abstract
The stable ascorbic acid derivative 2-O-alpha-D-glucopyranosyl-L-ascorbic acid (AA-2G) was used to investigate the role of ascorbic acid (AA) in B cell differentiation in vitro. AA-2G is stable in a solution unlike AA but is hydrolyzed by cellular alpha-glucosidase to release AA. Mouse spleen B cells were primed for 2 days with an anti-mu antibody in the presence of interleukin (IL)-4 and IL-5 and then washed and recultured with AA-2G in the presence of IL-4 and IL-5. AA-2G, but not AA, dose-dependently increased IgM production, the greatest enhancement being 150% at concentrations of more than 0.5mM. In the absence of IL-4 and IL-5, primed B cells produced a negligible amount of IgM, and AA-2G had no effect. AA-2G-induced IgM production in the presence of IL-4 and IL-5 was inhibited by the alpha-glucosidase inhibitor castanospermine. Intracellular AA content, depleted during the priming period, increased by adding AA-2G at the start of reculture. Treatment of B cells with AA-2G resulted in an increase in the number of IgM-secreting cells, CD138-positive cells and CD45R/B220-negative cells. The number of viable cells in untreated cultures decreased gradually, but the decrease was significantly attenuated by AA-2G, resulting in about 70% more viable cells in AA-2G-treated cultures. AA-2G caused a slight but reproducible enhancement of DNA synthesis and a slight decrease in the number of cells with a sub-G1 DNA content. These results demonstrated that AA released from AA-2G enhanced cytokine-dependent IgM production in anti-mu-primed B cells and suggest that its effect is caused through promoting the differentiation of B cells to plasma cells and attenuating the gradual decrease in the number of viable cells.
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MURAYAMA Y, NEOH TL, KOBAYASHI T, ADACHI S. Production of Emulsifying and Antioxidative Substances from Defatted Rice Bran by Two-step Subcritical Water Treatment. ACTA ACUST UNITED AC 2009. [DOI: 10.11301/jsfe.10.107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yusuke MURAYAMA
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University
| | - Tze Loon NEOH
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University
| | - Takashi KOBAYASHI
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University
| | - Shuji ADACHI
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University
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Maliakel DM, Kagiya TV, Nair CKK. Prevention of cisplatin-induced nephrotoxicity by glucosides of ascorbic acid and alpha-tocopherol. ACTA ACUST UNITED AC 2008; 60:521-7. [PMID: 18644706 DOI: 10.1016/j.etp.2008.04.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Revised: 04/21/2008] [Accepted: 04/22/2008] [Indexed: 12/23/2022]
Abstract
BACKGROUND Cisplatin is one of the most widely used cytotoxic therapeutic agents for the treatment of cancer. This drug, at effective higher doses, causes many physiological adverse effects such as nephrotoxicity and genotoxicity. The toxicity of the drug has been attributed to the induction of oxidative free radicals. METHODS Following intraperitoneal administration of cisplatin and ascorbic acid monoglucoside (AsAG) or alpha-tocopherol monoglucoside (TMG), investigations were conducted on levels of serum urea and creatinine, peroxidation of lipids in renal tissues, renal antioxidants and histopathology of renal tissue. RESULTS Administration of cisplatin to mice induced a marked renal failure, characterized by significant increase in serum urea and creatinine levels in addition to severe alterations in renal tissue architecture. Cisplatin also induced oxidative stress as indicated by increased lipid peroxidation and decreased levels of reduced glutathione (GSH), glutathione peroxidase (GPx), superoxide dismutase (SOD) and catalase in renal tissues. Administration of AsAG or TMG markedly reduced the cisplatin-induced higher plasma creatinine and urea levels and counteracted the deleterious effects of cisplatin on oxidative stress markers and protected the tissues from the cisplatin-induced lipid peroxidation. CONCLUSION These results indicated that AsAG or TMG has a protective effect against cisplatin-induced renal damage in mice. The protection is mediated by preventing the decline of antioxidant status. The results have implications in use of AsAG or TMG in human application for protecting against drug-induced nephrotoxicity.
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Antioxidant properties of 2-O-beta-D-glucopyranosyl-L-ascorbic acid. Biosci Biotechnol Biochem 2008; 72:1558-63. [PMID: 18540110 DOI: 10.1271/bbb.80063] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The antioxidant activity of a provitamin C agent, 2-O-beta-D-glucopyranosyl-L-ascorbic acid (AA-2betaG), was compared to that of 2-O-alpha-D-glucopyranosyl-L-ascorbic acid (AA-2G) and ascorbic acid (AA) using four in vitro methods, 1,1-diphenyl-picrylhydrazyl (DPPH) radical-scavenging assay, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical cation (ABTS(*+))-scavenging assay, oxygen radical absorbance capacity (ORAC) assay, and 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH)-induced erythrocyte hemolysis inhibition assay. AA-2betaG slowly and continuously scavenged DPPH radicals and ABTS(*+) in roughly the same reaction profiles as AA-2G, whereas AA quenched these radicals immediately. In the ORAC assay and the hemolysis inhibition assay, AA-2betaG showed similar overall activities to AA-2G and to AA, although the reactivity of AA-2betaG against the peroxyl radical generated in both assays was lower than that of AA-2G and AA. These data indicate that AA-2betaG had roughly the same radical-scavenging properties as AA-2G, and a comprehensive in vitro antioxidant activity of AA-2betaG appeared to be comparable not only to that of AA-2G but also to that of AA.
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Hata S, Wiboonsirikul J, Maeda A, Kimura Y, Adachi S. Extraction of defatted rice bran by subcritical water treatment. Biochem Eng J 2008. [DOI: 10.1016/j.bej.2007.11.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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