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Golonko A, Pienkowski T, Swislocka R, Orzechowska S, Marszalek K, Szczerbinski L, Swiergiel AH, Lewandowski W. Dietary factors and their influence on immunotherapy strategies in oncology: a comprehensive review. Cell Death Dis 2024; 15:254. [PMID: 38594256 PMCID: PMC11004013 DOI: 10.1038/s41419-024-06641-6] [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: 11/23/2023] [Revised: 03/26/2024] [Accepted: 04/03/2024] [Indexed: 04/11/2024]
Abstract
Immunotherapy is emerging as a promising avenue in oncology, gaining increasing importance and offering substantial advantages when compared to chemotherapy or radiotherapy. However, in the context of immunotherapy, there is the potential for the immune system to either support or hinder the administered treatment. This review encompasses recent and pivotal studies that assess the influence of dietary elements, including vitamins, fatty acids, nutrients, small dietary molecules, dietary patterns, and caloric restriction, on the ability to modulate immune responses. Furthermore, the article underscores how these dietary factors have the potential to modify and enhance the effectiveness of anticancer immunotherapy. It emphasizes the necessity for additional research to comprehend the underlying mechanisms for optimizing the efficacy of anticancer therapy and defining dietary strategies that may reduce cancer-related morbidity and mortality. Persistent investigation in this field holds significant promise for improving cancer treatment outcomes and maximizing the benefits of immunotherapy.
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Affiliation(s)
- Aleksandra Golonko
- Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
- Clinical Research Center, Medical University of Bialystok, M. Skłodowskiej-Curie 24a, 15-276, Bialystok, Poland
| | - Tomasz Pienkowski
- Clinical Research Center, Medical University of Bialystok, M. Skłodowskiej-Curie 24a, 15-276, Bialystok, Poland.
| | - Renata Swislocka
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45 E, 15-351, Bialystok, Poland
| | - Sylwia Orzechowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Krakow, Poland
| | - Krystian Marszalek
- Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
| | - Lukasz Szczerbinski
- Clinical Research Center, Medical University of Bialystok, M. Skłodowskiej-Curie 24a, 15-276, Bialystok, Poland
| | - Artur Hugo Swiergiel
- Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
- Faculty of Biology, Department of Animal and Human Physiology, University of Gdansk, W. Stwosza 59, 80-308, Gdansk, Poland
| | - Wlodzimierz Lewandowski
- Prof. Waclaw Dabrowski Institute of Agricultural and Food Biotechnology State Research Institute, Rakowiecka 36, 02-532, Warsaw, Poland
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45 E, 15-351, Bialystok, Poland
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2
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Praditi C, Bozonet SM, Dachs GU, Vissers MCM. Ascorbate Uptake and Retention by Breast Cancer Cell Lines and the Intracellular Distribution of Sodium-Dependent Vitamin C Transporter 2. Antioxidants (Basel) 2023; 12:1929. [PMID: 38001782 PMCID: PMC10669237 DOI: 10.3390/antiox12111929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 11/26/2023] Open
Abstract
Ascorbate plays a vital role as a co-factor for a superfamily of enzymes, the 2-oxoglutarate dependent dioxygenases (2-OGDDs), which govern numerous pathways in cancer progression, including the hypoxic response and the epigenetic regulation of gene transcription. Ascorbate uptake into most cells is through active transport by the sodium-dependent vitamin C transporter 2 (SVCT2). The aims of this study were to determine the kinetics of ascorbate uptake and retention by breast cancer cell lines under various oxygen conditions, and to investigate the role of SVCT2 in mediating ascorbate uptake and intracellular trafficking. Human MDA-MB231 cells accumulated up to 5.1 nmol ascorbate/106 cells, human MCF7 cells 4.5 nmol/106 cells, and murine EO771 cells 26.7 nmol/106 cells. Intracellular ascorbate concentrations decreased rapidly after reaching maximum levels unless further ascorbate was supplied to the medium, and there was no difference in the rate of ascorbate loss under normoxia or hypoxia. SVCT2 was localised mainly to subcellular compartments, with the nucleus apparently containing the most SVCT2 protein, followed by the mitochondria. Much less SVCT2 staining was observed on the plasma membrane. Our data showed that careful management of the doses and incubation times with ascorbate in vitro allows for an approximation of in vivo conditions. The localisation of SVCT2 suggests that the distribution of ascorbate to intracellular compartments is closely aligned to the known function of ascorbate in supporting 2-OGDD enzymatic functions in the organelles and with supporting antioxidant protection in the mitochondria.
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Affiliation(s)
- Citra Praditi
- Mātai Hāora—Centre for Redox Biology and Medicine, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch 8011, New Zealand; (C.P.); (S.M.B.)
| | - Stephanie M. Bozonet
- Mātai Hāora—Centre for Redox Biology and Medicine, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch 8011, New Zealand; (C.P.); (S.M.B.)
| | - Gabi U. Dachs
- Mackenzie Cancer Research Group, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch 8011, New Zealand;
| | - Margreet C. M. Vissers
- Mātai Hāora—Centre for Redox Biology and Medicine, Department of Pathology and Biomedical Science, University of Otago Christchurch, Christchurch 8011, New Zealand; (C.P.); (S.M.B.)
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3
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Weng J, Zhou X, Wiriyasermkul P, Ren Z, Chen K, Gil-Iturbe E, Zhou M, Quick M. Insight into the mechanism of H +-coupled nucleobase transport. Proc Natl Acad Sci U S A 2023; 120:e2302799120. [PMID: 37549264 PMCID: PMC10438392 DOI: 10.1073/pnas.2302799120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 07/07/2023] [Indexed: 08/09/2023] Open
Abstract
Members of the nucleobase/ascorbic acid transporter (NAT) gene family are found in all kingdoms of life. In mammals, the concentrative uptake of ascorbic acid (vitamin C) by members of the NAT family is driven by the Na+ gradient, while the uptake of nucleobases in bacteria is powered by the H+ gradient. Here, we report the structure and function of PurTCp, a NAT family member from Colwellia psychrerythraea. The structure of PurTCp was determined to 2.80 Å resolution by X-ray crystallography. PurTCp forms a homodimer, and each protomer has 14 transmembrane segments folded into a transport domain (core domain) and a scaffold domain (gate domain). A purine base is present in the structure and defines the location of the substrate binding site. Functional studies reveal that PurTCp transports purines but not pyrimidines and that purine binding and transport is dependent on the pH. Mutation of a conserved aspartate residue close to the substrate binding site reveals the critical role of this residue in H+-dependent transport of purines. Comparison of the PurTCp structure with transporters of the same structural fold suggests that rigid-body motions of the substrate-binding domain are central for substrate translocation across the membrane.
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Affiliation(s)
- Jun Weng
- Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY10032
| | - Xiaoming Zhou
- Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY10032
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY10032
| | - Pattama Wiriyasermkul
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY10032
| | - Zhenning Ren
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX77030
| | - Kehan Chen
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX77030
| | - Eva Gil-Iturbe
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY10032
| | - Ming Zhou
- Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY10032
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX77030
| | - Matthias Quick
- Department of Physiology and Cellular Biophysics, Columbia University Irving Medical Center, New York, NY10032
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY10032
- Area Neuroscience - Molecular Therapeutics, New York State Psychiatric Institute, New York, NY10032
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Jung J, Ku M, Jeong S, Yoon N, Park JH, Youn HS, Yang J, Seo S. Antioxidative Impact of Phenolics-Loaded Nanocarriers on Cytoskeletal Network Remodeling of Invasive Cancer Cells. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37438323 PMCID: PMC10375430 DOI: 10.1021/acsami.3c04693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Natural phenolic compounds have antioxidant properties owing to their free radical-scavenging capability. The combined effect of a mixture of phenolic compounds has been studied; however, the detailed investigation for finding a correlation between single phenolic molecules and antioxidant activity has not been explored. Herein, we revealed that the number of phenolic hydroxyl groups in phenolics played a central role in their antioxidant capacity. Based on the finding, tannic acid showed the most effective antioxidant potential, e.g., 76% in tannic acid versus 22% in vitamin C as a standard antioxidant component. Because cancer progression is closely related to oxidative processes at the cellular level, we further applied the surface treatment of tannic acid drug-delivery nanocarriers. Tannic acid-loaded nanocarriers reduced reactive oxygen species of cancer cells as much as 41% of vehicle treatment and remodeled cytoskeletal network. By a gelatin degradation study, TA-loaded nanocarrier-treated cells induced 44.6% reduction of degraded area than vehicle-treated cells, implying a potential of blocking invasiveness of cancer cells.
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Affiliation(s)
- Jaewon Jung
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Minhee Ku
- Department of Radiology, College of Medicine, Seoul 03722, Republic of Korea
- Systems Molecular Radiology, Yonsei University, Seoul 03722, Republic of Korea
- Convergence Research Center for Systems Molecular Radiological Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Suhui Jeong
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Nara Yoon
- Department of Radiology, College of Medicine, Seoul 03722, Republic of Korea
- Systems Molecular Radiology, Yonsei University, Seoul 03722, Republic of Korea
- Convergence Research Center for Systems Molecular Radiological Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Jae Hyun Park
- Young Chemical Co. Ltd., 80-93, Golden Root-ro, Juchon-myeon, Gimhae 50969, Republic of Korea
| | - Han Sung Youn
- Young Chemical Co. Ltd., 80-93, Golden Root-ro, Juchon-myeon, Gimhae 50969, Republic of Korea
| | - Jaemoon Yang
- Department of Radiology, College of Medicine, Seoul 03722, Republic of Korea
- Systems Molecular Radiology, Yonsei University, Seoul 03722, Republic of Korea
- Convergence Research Center for Systems Molecular Radiological Science, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungbaek Seo
- Department of Biomaterials Science (BK21 FOUR Program), College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
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5
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Kietzmann T. Vitamin C: From nutrition to oxygen sensing and epigenetics. Redox Biol 2023; 63:102753. [PMID: 37263060 DOI: 10.1016/j.redox.2023.102753] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/09/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023] Open
Abstract
Vitamin C is unbeatable - at least when it comes to sales. Of all the vitamin preparations, those containing vitamin C sell best. This is surprising because vitamin C deficiency is extremely rare. Nevertheless, there is still controversy about whether the additional intake of vitamin C supplements is essential for our health. In this context, the possible additional benefit is in most cases merely reduced to the known effect as an antioxidant. However, new findings in recent years on the mechanisms of oxygen-sensing and epigenetic control underpin the multifaceted role of vitamin C in a biological context and have therefore renewed interest in it. In the present article, therefore, known facts are linked to these new key data. In addition, available clinical data on vitamin C use of cancer therapy are summarized.
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Affiliation(s)
- Thomas Kietzmann
- University of Oulu, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, P.O. Box 3000, 90014, Oulu, Finland.
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6
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Pezzotti G, Ofuji S, Imamura H, Adachi T, Yamamoto T, Kanamura N, Ohgitani E, Marin E, Zhu W, Mazda O, Togo A, Kimura S, Iwata T, Shiba H, Ouhara K, Aoki T, Kawai T. In Situ Raman Analysis of Biofilm Exopolysaccharides Formed in Streptococcus mutans and Streptococcus sanguinis Commensal Cultures. Int J Mol Sci 2023; 24:ijms24076694. [PMID: 37047667 PMCID: PMC10095091 DOI: 10.3390/ijms24076694] [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: 02/17/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
This study probed in vitro the mechanisms of competition/coexistence between Streptococcus sanguinis (known for being correlated with health in the oral cavity) and Streptococcus mutans (responsible for aciduric oral environment and formation of caries) by means of quantitative Raman spectroscopy and imaging. In situ Raman assessments of live bacterial culture/coculture focusing on biofilm exopolysaccharides supported the hypothesis that both species engaged in antagonistic interactions. Experiments of simultaneous colonization always resulted in coexistence, but they also revealed fundamental alterations of the biofilm with respect to their water-insoluble glucan structure. Raman spectra (collected at fixed time but different bacterial ratios) showed clear changes in chemical bonds in glucans, which pointed to an action by Streptococcus sanguinis to discontinue the impermeability of the biofilm constructed by Streptococcus mutans. The concurrent effects of glycosidic bond cleavage in water-insoluble α - 1,3-glucan and oxidation at various sites in glucans' molecular chains supported the hypothesis that secretion of oxygen radicals was the main "chemical weapon" used by Streptococcus sanguinis in coculture.
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Affiliation(s)
- Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Satomi Ofuji
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Hayata Imamura
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tetsuya Adachi
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Eriko Ohgitani
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
| | - Azusa Togo
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Satoshi Kimura
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tadahisa Iwata
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hideki Shiba
- Department of Biological Endodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Takashi Aoki
- Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Toshihisa Kawai
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3301 College Ave, Fort Lauderdale, FL 33314, USA
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Effect of liposomal formulation of ascorbic acid on corneal permeability. Sci Rep 2023; 13:3448. [PMID: 36859418 PMCID: PMC9977777 DOI: 10.1038/s41598-023-29290-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 02/02/2023] [Indexed: 03/03/2023] Open
Abstract
Ascorbic acid (AA) has a pivotal role in corneal wound healing via stimulating the biosynthesis of highly organized extracellular matrix components, but its rapid degradation and low corneal permeability limits its therapeutic effects. In this paper, we present the pharmacokinetic properties of a liposomal-based formulation of AA in terms of corneal permeation. Chemical stability, shelf-life, and drug release rate of lyophilized liposome (AA-LLipo) formulation was determined in comparison to free-form of AA solution using high-performance liquid chromatography (HPLC) and rapid equilibrium dialysis. In vitro transcorneal permeability was studied using a parallel artificial membrane permeability assay (PAMPA). Ex vivo permeation was examined on AA-LLipo-treated porcine cornea by determining the AA content on the ocular surface, in the cornea as well as in the aqueous humor using HPLC, and by Raman-mapping visualizing the AA-distribution. Our results showed that the liposomal formulation improved the chemical stability of AA, while drug release was observed with the same kinetic efficiency as from the free-form of AA solution. Both corneal-PAMPA and porcine corneal permeability studies showed that AA-LLipo markedly improved the corneal absorption kinetics of AA, thus, increasing the AA content in the cornea and aqueous humor. AA-LLipo formulation could potentially increase the bioavailability of AA in corneal tissues.
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Manzur-Valdespino S, Arias-Rico J, Ramírez-Moreno E, Sánchez-Mata MDC, Jaramillo-Morales OA, Angel-García J, Zafra-Rojas QY, Barrera-Gálvez R, Cruz-Cansino NDS. Applications and Pharmacological Properties of Cactus Pear ( Opuntia spp.) Peel: A Review. Life (Basel) 2022; 12:1903. [PMID: 36431039 PMCID: PMC9696565 DOI: 10.3390/life12111903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Nowadays, there is a growing interest in the exploitation of by-products from fruits and vegetables, generated from industrial processing or human feeding. Residues of popularly consumed fruits such as orange, lemon, banana, pomegranate, among others, have been widely described and studied; however, cactus pear (Opuntia spp.) residues, as a locally consumed product, have been forgotten. The whole fruit can be divided into the edible portion (pulp) and the non-edible portion (seeds and peel). Several studies mainly focus on the characteristics of the edible portion or in the whole fruit, ignoring by-products such as peels, which are rich in compounds such as phenols, flavonoids and dietary fiber; they have also been proposed as an alternative source of lipids, carbohydrates and natural colorants. Some uses of the peel have been reported as a food additives, food supplements, as a source of pectins and for wastewater treatment; however, there have not been any deep investigations of the characteristics and potential uses of the cactus pear peel (CPP). The aim of the present paper is to provide an overview of the current research on CPP. CPP has many bio-active compounds that may provide health benefits and may also be useful in pharmaceutical, food and manufacturing industries; however, greater research is needed in order to gain thorough knowledge of the possibilities of this by-product.
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Affiliation(s)
- Salvador Manzur-Valdespino
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - José Arias-Rico
- Área Académica de Enfermería, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - Esther Ramírez-Moreno
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - María de Cortes Sánchez-Mata
- Department of Nutrition and Food Sciences, Pharmacy Faculty, Universidad Complutense de Madrid, Plaza de Ramón y Cajal s/n, E-28040 Madrid, Spain
| | - Osmar Antonio Jaramillo-Morales
- Nursing and Obstetrics Department, Life Sciences Division, Campus Irapuato-Salamanca, University of Guanajuato, Ex Hacienda El Copal, Km. 9 Carretera Irapuato-Silao, A.P 311, Irapuato 36500, Guanajuato, Mexico
| | - Julieta Angel-García
- Área Académica de Enfermería, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - Quinatzin Yadira Zafra-Rojas
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - Rosario Barrera-Gálvez
- Área Académica de Enfermería, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
| | - Nelly del Socorro Cruz-Cansino
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado Hidalgo, Circuito Ex Hacienda La Concepción S/N, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42160, Mexico
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9
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Ascorbic acid-loaded gliadin nanoparticles as a novel nutraceutical formulation. Food Res Int 2022; 161:111869. [DOI: 10.1016/j.foodres.2022.111869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/07/2022] [Accepted: 08/22/2022] [Indexed: 11/15/2022]
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10
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α-Ketoglutarate Improves Meiotic Maturation of Porcine Oocytes and Promotes the Development of PA Embryos, Potentially by Reducing Oxidative Stress through the Nrf2 Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7113793. [PMID: 35237383 PMCID: PMC8885182 DOI: 10.1155/2022/7113793] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/31/2022] [Indexed: 12/30/2022]
Abstract
α-Ketoglutarate (α-KG) is a metabolite in the tricarboxylic acid cycle. It has a strong antioxidant function and can effectively prevent oxidative damage. Previous studies have shown that α-KG exists in porcine follicles, and its content gradually increases as the follicles grow and mature. However, the potential mechanism of supplementation of α-KG on porcine oocytes during in vitro maturation (IVM) has not yet been reported. The purpose of this study was to explore the effect of α-KG on the early embryonic development of pigs and the mechanisms underlying these effects. We found that α-KG can enhance the development of early pig embryos. Adding 20 μM α-KG to the in vitro culture medium significantly increased the rate of blastocyst formation and the total cell number. Compared with to that of the control group, apoptosis in blastocysts of the supplement group was significantly reduced. α-KG reduced the production of reactive oxygen species and glutathione levels in cells. α-KG not only improved the activity of mitochondria but also inhibited the occurrence of apoptosis. After supplementation with α-KG, pig embryo pluripotency-related genes (OCT4, NANOG, and SOX2) and antiapoptotic genes (Bcl2) were upregulated. In terms of mechanism, α-KG activates the Nrf2/ARE signaling pathway to regulate the expression of antioxidant-related targets, thus combating oxidative stress during the in vitro culture of oocytes. Activated Nrf2 promotes the transcription of Bcl2 genes and inhibits cell apoptosis. These results indicate that α-KG supplements have a beneficial effect on IVM by regulating oxidative stress during the IVM of porcine oocytes and can be used as a potential antioxidant for IVM of porcine oocytes.
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11
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Clergue-Duval V, Azuar J, Fonsart J, Delage C, Rollet D, Amami J, Frapsauce A, Gautron MA, Hispard E, Bellivier F, Bloch V, Laplanche JL, Questel F, Vorspan F. Ascorbic Acid Deficiency Prevalence and Associated Cognitive Impairment in Alcohol Detoxification Inpatients: A Pilot Study. Antioxidants (Basel) 2021; 10:antiox10121892. [PMID: 34942994 PMCID: PMC8750659 DOI: 10.3390/antiox10121892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/29/2022] Open
Abstract
Malnutrition has been reported in alcohol use disorder patients as having a possible influence on cognitive function. The aim of this study was to analyse the prevalence of ascorbic acid (AA) deficiency in inpatients admitted for alcohol detoxification and the associated factors, including cognitive impairment in the early period of abstinence. A retrospective chart review was conducted. The AA level was categorised into three groups: deficiency (AAD) (<2 mg/L), insufficiency (AAI) (2–5 mg/L) and normal level. The cognitive impairment was screened using the Montreal Cognitive Assessment (MoCA). Ninety-six patients were included (74 men; mean age 49.1 years (±11.5)). Twenty-seven AAD (28.1%) and twenty-two AAI (22.9%) were observed. In multivariate analysis, risk factors for AAD versus normal AA level were men (OR 17.8, 95%CI (1.63–194)), compensated cirrhosis (OR 9.35, 95%CI (1.60–54.6)) and street homelessness (OR 5.76, 95%CI (1.24–26.8) versus personal housing). The MoCA score was available for 53 patients (mean MoCA score: 25.7 (±3.3)). In multivariate analysis, the natural logarithm of AA (β = 1.18, p = 0.037) and sedative use disorder (β = −2.77, p = 0.046) were associated with the MoCA score. AAD and AAI are frequent in inpatients admitted for alcohol detoxification. A low level of AA was associated with cognitive impairment in the early period of abstinence.
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Affiliation(s)
- Virgile Clergue-Duval
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
- Correspondence:
| | - Julien Azuar
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
| | - Julien Fonsart
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Biochimie et Biologie Moléculaire, 75010 Paris, France;
| | - Clément Delage
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
| | - Dorian Rollet
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Jihed Amami
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Alexia Frapsauce
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
| | - Marie-Astrid Gautron
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- APHP GHU Nord, Site Beaujon, Unité de Traitement Ambulatoire des Maladies Addictives, 92110 Clichy, France
| | - Eric Hispard
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
| | - Frank Bellivier
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
| | - Vanessa Bloch
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Service de Pharmacie, 75010 Paris, France;
- UFR de Pharmacie, Université de Paris, 75006 Paris, France
| | - Jean-Louis Laplanche
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Biochimie et Biologie Moléculaire, 75010 Paris, France;
- UFR de Pharmacie, Université de Paris, 75006 Paris, France
| | - Frank Questel
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- Resalcog (Réseau Pour la Prise en Charge des Troubles Cognitifs Liés à L’alcool), 75017 Paris, France
| | - Florence Vorspan
- APHP GHU Nord, Site Lariboisière Fernand-Widal, Département de Psychiatrie et de Médecine Addictologique, 75010 Paris, France; (J.A.); (D.R.); (J.A.); (E.H.); (F.B.); (F.Q.); (F.V.)
- Inserm UMRS-1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, 75006 Paris, France; (C.D.); (V.B.); (J.-L.L.)
- FHU Network of Research in Substance Use Disorders (NOR-SUD), 75006 Paris, France;
- UFR de Médecine, Université de Paris, 75006 Paris, France
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12
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Jordan AC, Perry CGR, Cheng AJ. Promoting a pro-oxidant state in skeletal muscle: Potential dietary, environmental, and exercise interventions for enhancing endurance-training adaptations. Free Radic Biol Med 2021; 176:189-202. [PMID: 34560246 DOI: 10.1016/j.freeradbiomed.2021.09.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/06/2021] [Accepted: 09/16/2021] [Indexed: 12/17/2022]
Abstract
Accumulating evidence now shows that supplemental antioxidants including vitamin C, vitamin E and N-Acetylcysteine consumption can suppress adaptations to endurance-type exercise by attenuating reactive oxygen and nitrogen species (RONS) formation within skeletal muscle. This emerging evidence points to the importance of pro-oxidation as an important stimulus for endurance-training adaptations, including mitochondrial biogenesis, endogenous antioxidant production, insulin signalling, angiogenesis and growth factor signaling. Although sustained oxidative distress is associated with many chronic diseases, athletes have, on average, elevated levels of certain endogenous antioxidants to maintain redox homeostasis. As a result, trained athletes may have a better capacity to buffer oxidants during and after exercise, resulting in a reduced oxidative eustress stimulus for adaptations. Thus, higher levels of RONS input and exercise-induced oxidative stress may benefit athletes in the pursuit of continuous endurance training redox adaptations. This review addresses why athletes should be looking to enhance exercise-induced oxidative stress and how it can be accomplished. Methods covered include high-intensity interval training, hyperthermia and heat stress, dietary antioxidant restriction and modified antioxidant timing, dietary antioxidants and polyphenols as adjuncts to exercise, and vitamin C as a pro-oxidant.
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Affiliation(s)
- Adam C Jordan
- Muscle Health Research Centre, School of Kinesiology and Health Sciences, Faculty of Health, York University, M3J 1P3, Toronto, Canada
| | - Christopher G R Perry
- Muscle Health Research Centre, School of Kinesiology and Health Sciences, Faculty of Health, York University, M3J 1P3, Toronto, Canada
| | - Arthur J Cheng
- Muscle Health Research Centre, School of Kinesiology and Health Sciences, Faculty of Health, York University, M3J 1P3, Toronto, Canada.
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13
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Böttger F, Vallés-Martí A, Cahn L, Jimenez CR. High-dose intravenous vitamin C, a promising multi-targeting agent in the treatment of cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:343. [PMID: 34717701 PMCID: PMC8557029 DOI: 10.1186/s13046-021-02134-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/07/2021] [Indexed: 12/21/2022]
Abstract
Mounting evidence indicates that vitamin C has the potential to be a potent anti-cancer agent when administered intravenously and in high doses (high-dose IVC). Early phase clinical trials have confirmed safety and indicated efficacy of IVC in eradicating tumour cells of various cancer types. In recent years, the multi-targeting effects of vitamin C were unravelled, demonstrating a role as cancer-specific, pro-oxidative cytotoxic agent, anti-cancer epigenetic regulator and immune modulator, reversing epithelial-to-mesenchymal transition, inhibiting hypoxia and oncogenic kinase signalling and boosting immune response. Moreover, high-dose IVC is powerful as an adjuvant treatment for cancer, acting synergistically with many standard (chemo-) therapies, as well as a method for mitigating the toxic side-effects of chemotherapy. Despite the rationale and ample evidence, strong clinical data and phase III studies are lacking. Therefore, there is a need for more extensive awareness of the use of this highly promising, non-toxic cancer treatment in the clinical setting. In this review, we provide an elaborate overview of pre-clinical and clinical studies using high-dose IVC as anti-cancer agent, as well as a detailed evaluation of the main known molecular mechanisms involved. A special focus is put on global molecular profiling studies in this respect. In addition, an outlook on future implications of high-dose vitamin C in cancer treatment is presented and recommendations for further research are discussed.
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Affiliation(s)
- Franziska Böttger
- Department of Medical Oncology, Cancer Center Amsterdam, OncoProteomics Laboratory, Amsterdam UMC, Location VU University Medical Center, 1081 HV, Amsterdam, the Netherlands
| | - Andrea Vallés-Martí
- Department of Medical Oncology, Cancer Center Amsterdam, OncoProteomics Laboratory, Amsterdam UMC, Location VU University Medical Center, 1081 HV, Amsterdam, the Netherlands
| | - Loraine Cahn
- Department of Medical Oncology, Cancer Center Amsterdam, OncoProteomics Laboratory, Amsterdam UMC, Location VU University Medical Center, 1081 HV, Amsterdam, the Netherlands
| | - Connie R Jimenez
- Department of Medical Oncology, Cancer Center Amsterdam, OncoProteomics Laboratory, Amsterdam UMC, Location VU University Medical Center, 1081 HV, Amsterdam, the Netherlands.
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14
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Smith-Díaz CC, Magon NJ, McKenzie JL, Hampton MB, Vissers MCM, Das AB. Ascorbate Inhibits Proliferation and Promotes Myeloid Differentiation in TP53-Mutant Leukemia. Front Oncol 2021; 11:709543. [PMID: 34497762 PMCID: PMC8419345 DOI: 10.3389/fonc.2021.709543] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/02/2021] [Indexed: 11/26/2022] Open
Abstract
Loss-of-function mutations in the DNA demethylase TET2 are associated with the dysregulation of hematopoietic stem cell differentiation and arise in approximately 10% of de novo acute myeloid leukemia (AML). TET2 mutations coexist with other mutations in AML, including TP53 mutations, which can indicate a particularly poor prognosis. Ascorbate can function as an epigenetic therapeutic in pathological contexts involving heterozygous TET2 mutations by restoring TET2 activity. How this response is affected when myeloid leukemia cells harbor mutations in both TET2 and TP53 is unknown. Therefore, we examined the effects of ascorbate on the SKM-1 AML cell line that has mutated TET2 and TP53. Sustained treatment with ascorbate inhibited proliferation and promoted the differentiation of these cells. Furthermore, ascorbate treatment significantly increased 5-hydroxymethylcytosine, suggesting increased TET activity as the likely mechanism. We also investigated whether ascorbate affected the cytotoxicity of Prima-1Met, a drug that reactivates some p53 mutants and is currently in clinical trials for AML. We found that the addition of ascorbate had a minimal effect on Prima-1Met–induced cytotoxicity, with small increases or decreases in cytotoxicity being observed depending on the timing of treatment. Collectively, these data suggest that ascorbate could exert a beneficial anti-proliferative effect on AML cells harboring both TET2 and TP53 mutations whilst not interfering with targeted cytotoxic therapies such as Prima-1Met.
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Affiliation(s)
- Carlos C Smith-Díaz
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Nicholas J Magon
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Judith L McKenzie
- Haematology Research Group, Christchurch Hospital and Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Margreet C M Vissers
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Andrew B Das
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
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15
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Orekhov AN, Poznyak AV, Sobenin IA, Nikifirov NN, Ivanova EA. Mitochondrion as a Selective Target for the Treatment of Atherosclerosis: Role of Mitochondrial DNA Mutations and Defective Mitophagy in the Pathogenesis of Atherosclerosis and Chronic Inflammation. Curr Neuropharmacol 2021; 18:1064-1075. [PMID: 31744449 PMCID: PMC7709151 DOI: 10.2174/1570159x17666191118125018] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/21/2019] [Accepted: 11/16/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Atherosclerosis is a chronic inflammatory condition that affects different arteries in the human body and often leads to severe neurological complications, such as stroke and its sequelae. Affected blood vessels develop atherosclerotic lesions in the form of focal thickening of the intimal layer, so called atherosclerotic plaques. OBJECTIVES Despite the high priority of atherosclerosis research for global health and the numerous preclinical and clinical studies conducted, currently, there is no effective pharmacological treatment that directly impacts atherosclerotic plaques. Many knowledge gaps exist in our understanding of the mechanisms of plaque formation. In this review, we discuss the role of mitochondria in different cell types involved in atherogenesis and provide information about mtDNA mutations associated with the disease. RESULTS Mitochondria of blood and arterial wall cells appear to be one of the important factors in disease initiation and development. Significant experimental evidence connects oxidative stress associated with mitochondrial dysfunction and vascular disease. Moreover, mitochondrial DNA (mtDNA) deletions and mutations are being considered as potential disease markers. Further study of mtDNA damage and associated dysfunction may open new perspectives for atherosclerosis treatment. CONCLUSION Mitochondria can be considered as important disease-modifying factors in several chronic pathologies. Deletions and mutations of mtDNA may be used as potential disease markers. Mitochondria-targeting antioxidant therapies appear to be promising for the development of treatment of atherosclerosis and other diseases associated with oxidative stress and chronic inflammation.
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Affiliation(s)
- Alexander N Orekhov
- Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russian Federation,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russian, Federation,Institute of Human Morphology, Moscow 117418, Russian Federation
| | - Anastasia V Poznyak
- Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russian Federation
| | - Igor A Sobenin
- Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russian Federation,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russian, Federation,Laboratory of Medical Genetics, National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Str., 121552 Moscow, Russia
| | - Nikita N Nikifirov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, 125315 Moscow, Russian, Federation,Laboratory of Medical Genetics, National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Str., 121552 Moscow, Russia,Centre of Collective Usage, Institute of Gene Biology, Russian Academy of Sciences, 34/5 Vavilova Street, Moscow 119334, Russia
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16
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Galić L, Špoljarević M, Jakovac E, Ravnjak B, Teklić T, Lisjak M, Perić K, Nemet F, Lončarić Z. Selenium Biofortification of Soybean Seeds Influences Physiological Responses of Seedlings to Osmotic Stress. PLANTS 2021; 10:plants10081498. [PMID: 34451543 PMCID: PMC8400912 DOI: 10.3390/plants10081498] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 11/16/2022]
Abstract
Climate change poses a serious threat to agricultural production. Water deficit in agricultural soils is one of the consequences of climate change that has a negative impact on crop growth and yield. Selenium (Se) is known to be involved in plant defense against biotic and abiotic stress through metabolic, structural, and physiological activity in higher plants. The aim of this study was to investigate the physiological response of Se-biofortified soybean (Glycine max (L.) Merrill) seedlings under osmotic stress. For this research, we used biofortified soybean grain obtained after foliar Se biofortification in 2020. The experiment was conducted in a growth chamber with two cultivars (Lucija and Sonja) grown on filter paper in three replicates. The experiment was carried out with two watering treatments: distilled water (PEG-0) and 2.5% polyethylene glycol 6000 (PEG-2.5) on Se-biofortified seeds (Se) and nonbiofortified seeds (wSe). Contents of lipid peroxidation product (LP), free proline (PRO), total phenolic content (TP), ferric reducing antioxidant power (FRAP), and ascorbic acid (AA) were analyzed in 7-days-old seedlings. Significant differences were detected in the Se content of soybean grains between the two cultivars. A milder reaction to PEG-2.5 was observed in cultivar Lucija in both Se and wSe treatments, which might represent the mitigating effects of Se on osmotic stress in this cultivar. Contrarily, in cultivar Sonja, Se adversely affected all analyzed traits in the PEG-2.5 treatment. Ultimately, Se is a pro-oxidant in Sonja, whereas it represents an anti-oxidant in Lucija. In conclusion, different soybean cultivars show contrasting physiological reactions to both osmotic stress and Se. However, the activation of antioxidant pathways in Sonja can also be interpreted as added value in soybean seedlings as a functional food.
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Affiliation(s)
- Lucija Galić
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
- Correspondence:
| | - Marija Špoljarević
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Elizabeta Jakovac
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Boris Ravnjak
- Department of Plant Production and Biotechnology, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia;
| | - Tihana Teklić
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Miroslav Lisjak
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Katarina Perić
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Franjo Nemet
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
| | - Zdenko Lončarić
- Department of Agroecology and Environment Protection, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Vladimira Preloga 1, 31000 Osijek, Croatia; (M.Š.); (E.J.); (T.T.); (M.L.); (K.P.); (F.N.); (Z.L.)
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Collins BJ, Mukherjee MS, Miller MD, Delaney CL. Effect of Dietary or Supplemental Vitamin C Intake on Vitamin C Levels in Patients with and without Cardiovascular Disease: A Systematic Review. Nutrients 2021; 13:nu13072330. [PMID: 34371840 PMCID: PMC8308513 DOI: 10.3390/nu13072330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/30/2021] [Accepted: 07/04/2021] [Indexed: 12/25/2022] Open
Abstract
Atherosclerosis is a pro-oxidative and pro-inflammatory disease state, which is the underlying cause of most cardiovascular events, estimated to affect 5.2% of the Australian population. Diet, and specifically vitamin C, through its antioxidant properties can play a role in impeding the development and progression of atherosclerosis. This systematic review conducted comprehensive searches in Medline, Emcare, Scopus, PubMed, and Cochrane using key search terms for vitamin C, plasma vitamin C, supplementation, and cardiovascular disease (CVD). The results demonstrated that vitamin C supplementation resulted in a significant increase in vitamin C levels in populations with or without CVD, except for one study on the CVD population. It was also seen that the healthy population baseline and post-intervention vitamin C levels were high compared to the CVD population. However, further research is indicated for CVD population groups with varying baseline vitamin C levels, such as low baseline vitamin C, within a more representative elderly cohort in order to formulate and update vitamin C repletion guidelines.
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Affiliation(s)
- Bianca J. Collins
- Department of Nutrition and Dietetics, College of Nursing and Health Sciences, Flinders University, Bedford Park, SA 5042, Australia;
| | - Mitali S. Mukherjee
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Bedford Park, SA 5042, Australia;
| | - Michelle D. Miller
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Bedford Park, SA 5042, Australia;
- Correspondence:
| | - Christopher L. Delaney
- Department of Vascular Surgery, Flinders Medical Centre, Flinders University, Bedford Park, SA 5042, Australia;
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18
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Muñoz-Montesino C, Peña E, Roa FJ, Sotomayor K, Escobar E, Rivas CI. Transport of Vitamin C in Cancer. Antioxid Redox Signal 2021; 35:61-74. [PMID: 33607936 DOI: 10.1089/ars.2020.8166] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Significance: Vitamin C is a powerful antioxidant that has an intricate relationship with cancer and has been studied for more than 60 years. However, the specific mechanisms that allow malignant cells to uptake, metabolize, and compartmentalize vitamin C remain unclear. In normal human cells, two different transporter systems are responsible for its acquisition: glucose transporters (GLUTs) transport the oxidized form of vitamin C (dehydroascorbic acid) and sodium-coupled ascorbic acid transporters (SVCTs) transport the reduced form (ascorbic acid [AA]). In this study, we review the mechanisms described for vitamin C uptake and metabolization in cancer. Recent Advances: Several studies performed recently in vivo and in vitro have provided the scientific community a better understanding of the differential capacities of cancer cells to acquire vitamin C: tumors from different origins do not express SVCTs in the plasma membrane and are only able to acquire vitamin C in its oxidized form. Interestingly, cancer cells differentially express a mitochondrial form of SVCT2. Critical Issues: Why tumors have reduced AA uptake capacity at the plasma membrane, but develop the capacity of AA transport within mitochondria, remains a mystery. However, it shows that understanding vitamin C physiology in tumor survival might be key to decipher the controversies in its relationship with cancer. Future Directions: A comprehensive analysis of the mechanisms by which cancer cells acquire, compartmentalize, and use vitamin C will allow the design of new therapeutic approaches in human cancer. Antioxid. Redox Signal. 35, 61-74.
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Affiliation(s)
- Carola Muñoz-Montesino
- Departamento de Fisiología and Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Eduardo Peña
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Francisco J Roa
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Kirsty Sotomayor
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Elizabeth Escobar
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Coralia I Rivas
- Departamento de Fisiopatología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
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19
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Hwang JI, Kim JE. Removal of organochlorine insecticide endosulfan in water and soil by Fenton reaction with ascorbic acid and various iron resources. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:28479-28489. [PMID: 33543439 DOI: 10.1007/s11356-021-12439-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
An assortment of Fenton (or Fenton-like) reaction treatment systems using various iron resources such as ferrous sulfate, ferric nitrate, commercial zerovalent iron (mZVI), or self-made ZVI (Fe-nanowire) were evaluated to effectively remove α- and β-isomers of endosulfan (ED) from contaminated water and soil. Ascorbic acid (AA) was added as a chelation reagent to maintain the aqueous reaction of soluble iron. In the aqueous experiment, a combined treatment of 1% mZVI, 0.01 M AA, and 0.1 M H2O2 was determined to be the most effective method, showing 98-100% of ED removal within 24 h. The mZVI/AA/H2O2 treatment method was finally applied to ED-contaminated soil samples, and the application removed significant ED residues from both soil slurries (65-73%) and immobile soils containing small amount of moisture (64-66.2%). Overall results showed that the mZVI/AA/H2O2 treatment can be utilized as a potential technique to remediate both water and soil contaminated with ED.
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Affiliation(s)
- Jeong-In Hwang
- Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Jang-Eok Kim
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
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20
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Huff TC, Sant DW, Camarena V, Van Booven D, Andrade NS, Mustafi S, Monje PV, Wang G. Vitamin C regulates Schwann cell myelination by promoting DNA demethylation of pro-myelinating genes. J Neurochem 2021; 157:1759-1773. [PMID: 32219848 PMCID: PMC7530063 DOI: 10.1111/jnc.15015] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 03/17/2020] [Accepted: 03/18/2020] [Indexed: 12/12/2022]
Abstract
Ascorbic acid (vitamin C) is critical for Schwann cells to myelinate peripheral nerve axons during development and remyelination after injury. However, its exact mechanism remains elusive. Vitamin C is a dietary nutrient that was recently discovered to promote active DNA demethylation. Schwann cell myelination is characterized by global DNA demethylation in vivo and may therefore be regulated by vitamin C. We found that vitamin C induces a massive transcriptomic shift (n = 3,848 genes) in primary cultured Schwann cells while simultaneously producing a global increase in genomic 5-hydroxymethylcytosine (5hmC), a DNA demethylation intermediate which regulates transcription. Vitamin C up-regulates 10 pro-myelinating genes which exhibit elevated 5hmC content in both the promoter and gene body regions of these loci following treatment. Using a mouse model of human vitamin C metabolism, we found that maternal dietary vitamin C deficiency causes peripheral nerve hypomyelination throughout early development in resulting offspring. Additionally, dietary vitamin C intake regulates the expression of myelin-related proteins such as periaxin (PRX) and myelin basic protein (MBP) during development and remyelination after injury in mice. Taken together, these results suggest that vitamin C cooperatively promotes myelination through 1) increased DNA demethylation and transcription of pro-myelinating genes, and 2) its known role in stabilizing collagen helices to form the basal lamina that is necessary for myelination.
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Affiliation(s)
- Tyler C. Huff
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - David W. Sant
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Vladimir Camarena
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Derek Van Booven
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Nadja S. Andrade
- Department of Psychiatry & Behavioral Sciences, Center for Therapeutic Innovation, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sushmita Mustafi
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Paula V. Monje
- Department of Neurological Surgery, Indiana University, Indianapolis, IN, USA
| | - Gaofeng Wang
- John P. Hussman Institute for Human Genomics, Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
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21
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Open-Air Cold Plasma Device Leads to Selective Tumor Cell Cytotoxicity. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11094171] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The need for effective and safe therapies for cancer is growing as aging is modifying its epidemiology. Cold atmospheric plasma (CAP) has gained attention as a potential anti-tumor therapy. CAP is a gas with enough energy to ionize a significant fraction of its constituent particles, forming equal numbers of positive ions and electrons. Timely-resolved output voltage measurement, emission spectroscopy, and quantification of reactive species (RS) in plasma-activated media (PAM) were performed to characterize the physical and chemical properties of plasma. To assess the cytotoxicity of cold atmospheric plasma in human tumors, different cell lines were cultured, plated, and exposed to CAP, followed by MTT and SRB colorimetric assays 24 h later. Human fibroblasts, phenotypically normal cells, were processed similarly. Plasma cytotoxicity was higher in cells of breast cancer, urinary bladder cancer, osteosarcoma, lung cancer, melanoma, and endometrial cancer. Cytotoxicity was time-dependent and possibly related to the increased production of hydrogen peroxide in the exposed medium. Sixty seconds of CAP exposure renders selective effects, preserving the viability of fibroblast cells. These results point to the importance of conducting further studies of the therapy with plasma.
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22
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Pearson AG, Pullar JM, Cook J, Spencer ES, Vissers MC, Carr AC, Hampton MB. Peroxiredoxin 2 oxidation reveals hydrogen peroxide generation within erythrocytes during high-dose vitamin C administration. Redox Biol 2021; 43:101980. [PMID: 33905956 PMCID: PMC8099772 DOI: 10.1016/j.redox.2021.101980] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/23/2021] [Accepted: 04/13/2021] [Indexed: 12/14/2022] Open
Abstract
Intravenous infusion of high dose (>10 g) vitamin C (IVC) is a common alternative cancer therapy. IVC results in millimolar levels of circulating ascorbate, which is proposed to generate cytotoxic quantities of H2O2 in the presence of transition metal ions. In this study we report on the in vitro and in vivo effects of millimolar ascorbate on erythrocytes. Addition of ascorbate to whole blood increased erythrocyte intracellular ascorbate approximately 35-fold. Within 10 min of ascorbate addition, we detected increased oxidation of erythrocyte peroxiredoxin 2 (Prx2), a major thiol antioxidant protein and a sensitive marker of H2O2 production. Up to 50% of Prx2 was present in the oxidised form after 60 min. The presence of extracellular catalase, removal of plasma or the addition of a metal chelator did not prevent ascorbate-induced Prx2 oxidation, suggesting that the H2O2 responsible for Prx2 oxidation was generated within the erythrocyte. Ascorbate is known to increase the rate of haemoglobin autoxidation and H2O2 production. Through spectral monitoring of oxidised haemoglobin we estimated a generation rate of 15 μM H2O2/min inside erythrocytes. We also investigated changes in erythrocyte ascorbate concentration and Prx2 oxidation following IVC infusion in a cohort of patients with cancer. Plasma ascorbate levels ranged from 7.8 to 35 mM immediately post infusion, while erythrocyte ascorbate levels reached 1.5–3.4 mM 4 h after beginning infusion. Transient oxidation of erythrocyte Prx2 was observed. We conclude that erythrocytes accumulate ascorbate during IVC infusion, providing a significant reservoir of ascorbate, and this ascorbate increases H2O2 generation within the cells. The consequence of increased erythrocyte Prx2 oxidation warrants further investigation.
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Affiliation(s)
- Andree G Pearson
- Centre for Free Radical Research, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand.
| | - Juliet M Pullar
- Centre for Free Radical Research, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand
| | - John Cook
- New Brighton Health Care, Christchurch, New Zealand
| | - Emma S Spencer
- Nutrition in Medicine Research Group, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Margreet Cm Vissers
- Centre for Free Radical Research, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Anitra C Carr
- Nutrition in Medicine Research Group, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology & Biomedical Science, University of Otago, Christchurch, New Zealand.
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23
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Bochon K, Zielniok K, Gawlak M, Zawada K, Zarychta-Wiśniewska W, Siennicka K, Struzik S, Pączek L, Burdzińska A. The Effect of L-Ascorbic Acid and Serum Reduction on Tenogenic Differentiation of Human Mesenchymal Stromal Cells. Int J Stem Cells 2021; 14:33-46. [PMID: 33122467 PMCID: PMC7904532 DOI: 10.15283/ijsc20023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 08/02/2020] [Accepted: 08/17/2020] [Indexed: 12/19/2022] Open
Abstract
Background and Objectives Despite significant improvement in the treatment of tendon injuries, the full tissue recovery is often not possible because of its limited ability to auto-repair. The transplantation of mesenchymal stromal cells (MSCs) is considered as a novel approach in the treatment of tendinopathies. The question about the optimal culture conditions remains open. In this study we aimed to investigate if serum reduction, L-ascorbic acid supplementation or a combination of both factors can induce tenogenic differentiation of human adipose-derived MSCs (ASCs). Methods and Results Human ASCs from 3 healthy donors were used in the study. The tested conditions were: 0.5 mM of ascorbic acid 2-phosphate (AA-2P), reduced serum content (2% FBS) or combination of these two factors. The combination of AA-2P and 2% FBS was the only experimental condition that caused a significant increase of the expression of all analyzed genes related to tenogenesis (SCLERAXIS, MOHAWK, COLLAGEN_1, COLLAGEN_3, DECORIN) in comparison to the untreated control (evaluated by RT-PCR, 5th day of experiment). Moreover, this treatment significantly increased the synthesis of SCLERAXIS, MOHAWK, COLLAGEN_1, COLLAGEN_3 proteins at the same time point (evaluated by Western blot method). Double immunocytochemical staining revealed that AA-2P significantly increased the extracellular deposition of both types of collagens. Semi-quantitative Electron Spin Resonance analysis of ascorbyl free radical revealed that AA-2P do not induce harmful transition metals-driven redox reactions in cell culture media. Conclusions Obtained results justify the use of reduced content of serum with the addition of 0.5 mM of AA-2P in tenogenic inducing media.
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Affiliation(s)
- Karolina Bochon
- Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Zielniok
- Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
| | - Maciej Gawlak
- Department of Pharmacodynamics and Pathophysiology, Centre for Preclinical Research and Technology, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Zawada
- Department of Physical Chemistry, Faculty of Pharmacy with the Laboratory Medicine Division, Medical University of Warsaw, Warsaw, Poland
| | | | - Katarzyna Siennicka
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Sławomir Struzik
- Department of Orthopedics and Traumatology, Medical University of Warsaw, Warsaw, Poland
| | - Leszek Pączek
- Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland.,Department of Bioinformatics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Anna Burdzińska
- Department of Immunology, Transplantology and Internal Diseases, Medical University of Warsaw, Warsaw, Poland
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24
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Ivanov V, Goc A, Ivanova S, Niedzwiecki A, Rath M. Inhibition of ACE2 Expression by Ascorbic Acid Alone and its Combinations with Other Natural Compounds. Infect Dis (Lond) 2021; 14:1178633721994605. [PMID: 33642866 PMCID: PMC7890723 DOI: 10.1177/1178633721994605] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/23/2021] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Angiotensin-converting enzyme II or ACE2 is an integral membrane protein present on many types of cells, including vascular endothelial cells and lung alveolar epithelial cells. This receptor serves as the entry point for SARS-coronaviruses (SARS-CoVs), including a novel coronavirus 2019-nCoV. Limited availability of these receptors can thwart cellular entry of this virus. METHODS We tested the effects of ascorbic acid (vitamin C) on cellular expression of ACE2 at the protein and RNA levels in human small alveolar epithelial cells and microvascular endothelial cells. In addition, we investigated whether combinations of ascorbic acid with other natural compounds can affect ACE2 expression. RESULTS The results show that ascorbic acid itself has moderate but consistent lowering effects on ACE2 expression at the cellular, protein, and RNA levels. Some natural compounds were effective in lowering ACE2 cellular expression, with the highest inhibitory effects observed for baicalin (75%) and theaflavin (50%). Significantly, combinations of these and other test compounds with ascorbic acid further decreased ACE2 expression. The highest impact of ascorbate on ACE2 expression was noted when combined with theaflavin (decrease from 50% to 87%), zinc (decrease from 22% to 62%), and with 10-undecenoic acid (from 18% to 53%). Ascorbic acid showed moderate additional benefits in decreasing ACE2 expression when combined with N-acetylcysteine and baicalin. CONCLUSION Our study provides valuable experimental confirmation of the efficacy of micronutrients in controlling ACE2 expression-the coronavirus cellular "entry" point. It further validates the importance of nutrient interactions in various aspects of cellular metabolism and in considering potential therapeutic applications of nutrient-based approaches. The study shows that ascorbic acid and its combination with some natural compounds could be included in developing preventive and therapeutic approaches toward the current pandemic.
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Affiliation(s)
| | | | | | - Aleksandra Niedzwiecki
- Aleksandra Niedzwiecki, Department of Infectious Diseases, Dr. Rath Research Institute, 5941 Optical Ct, San Jose, CA 95138, USA.
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25
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Pullar JM, Vissers MC. Re: "Micronutrient Status in Diabetic Patients with Foot Ulcers" by Pena et al. Adv Wound Care (New Rochelle) 2021; 10:49-50. [PMID: 33103955 DOI: 10.1089/wound.2020.1184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Juliet M. Pullar
- Department of Pathology and Biomedical Sciences, Centre for Free Radical Research, University of Otago, Christchurch, Christchurch, New Zealand
| | - Margreet C.M. Vissers
- Department of Pathology and Biomedical Sciences, Centre for Free Radical Research, University of Otago, Christchurch, Christchurch, New Zealand
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26
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Vitamin C and Cardiovascular Disease: An Update. Antioxidants (Basel) 2020; 9:antiox9121227. [PMID: 33287462 PMCID: PMC7761826 DOI: 10.3390/antiox9121227] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023] Open
Abstract
The potential beneficial effects of the antioxidant properties of vitamin C have been investigated in a number of pathological conditions. In this review, we assess both clinical and preclinical studies evaluating the role of vitamin C in cardiac and vascular disorders, including coronary heart disease, heart failure, hypertension, and cerebrovascular diseases. Pitfalls and controversies in investigations on vitamin C and cardiovascular disorders are also discussed.
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27
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dos S. Baião D, da Silva DVT, Paschoalin VMF. Beetroot, a Remarkable Vegetable: Its Nitrate and Phytochemical Contents Can be Adjusted in Novel Formulations to Benefit Health and Support Cardiovascular Disease Therapies. Antioxidants (Basel) 2020; 9:antiox9100960. [PMID: 33049969 PMCID: PMC7600128 DOI: 10.3390/antiox9100960] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 02/06/2023] Open
Abstract
The cardioprotective effects of dietary nitrate from beetroot in healthy and hypertensive individuals are undeniable and irrefutable. Nitrate and nitrate-derived nitrite are precursors for nitric oxide synthesis exhibiting an effect on cardiomyocytes and myocardial ischemia/reperfusion, improving endothelial function, reducing arterial stiffness and stimulating smooth muscle relaxation, decreasing systolic and diastolic blood pressures. Beetroot phytochemicals like betanin, saponins, polyphenols, and organic acids can resist simulated gastrointestinal digestion, raising the hypothesis that the cardioprotective effects of beetroots result from the combination of nitrate/nitrite and bioactive compounds that limit the generation of reactive oxygen species and modulate gene expression. Nitrate and phytochemical concentrations can be adjusted in beet formulations to fulfill requirements for acute or long-term supplementations, enhancing patient adherence to beet intervention. Based on in vitro, in vivo, and clinical trials, beet nitrate and its bioactive phytochemicals are promising as a novel supportive therapy to ameliorate cardiovascular diseases.
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28
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KiwiC for Vitality: Results of a Randomized Placebo-Controlled Trial Testing the Effects of Kiwifruit or Vitamin C Tablets on Vitality in Adults with Low Vitamin C Levels. Nutrients 2020; 12:nu12092898. [PMID: 32971991 PMCID: PMC7551849 DOI: 10.3390/nu12092898] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 12/15/2022] Open
Abstract
Consumption of vitamin C-rich fruit and vegetables has been associated with greater feelings of vitality. However, these associations have rarely been tested in randomized controlled trials. The aim of the current study was to test the effects of eating a vitamin C-rich food (kiwifruit) on subjective vitality and whether effects are driven by vitamin C. Young adults (n = 167, 61.1% female, aged 18-35) with plasma vitamin C <40 µmol/L were randomized into three intervention conditions: kiwifruit (2 SunGold™ kiwifruit/day), vitamin C (250 mg tablet/day), placebo (1 tablet/day). The trial consisted of a two-week lead-in, four-week intervention, and two-week washout. Plasma vitamin C and vitality questionnaires (total mood disturbance, fatigue, and well-being) were measured fortnightly. Self-reported sleep quality and physical activity were measured every second day through smartphone surveys. Nutritional confounds were assessed using a three-day food diary during each study phase. Plasma vitamin C reached saturation levels within two weeks for the kiwifruit and vitamin C groups. Participants consuming kiwifruit showed significantly improved mood and well-being during the intervention period; improvements in well-being were sustained during washout. Decreased fatigue and increased well-being were observed following intake of vitamin C alone, but only for participants with consistently low vitamin C levels during lead-in. Diet records showed that participants consuming kiwifruit reduced their fat intake during the intervention period. Intervention effects remained significant when adjusting for age and ethnicity, and were not explained by sleep quality, physical activity, BMI, or other dietary patterns, including fat intake. There were no changes in plasma vitamin C status or vitality in the placebo group. Whole food consumption of kiwifruit improved subjective vitality in adults with low vitamin C status. Similar, but not identical, changes were found for vitamin C tablets suggesting that additional properties of kiwifruit may contribute to improved vitality.
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29
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Przybyło M, Langner M. On the physiological and cellular homeostasis of ascorbate. Cell Mol Biol Lett 2020; 25:32. [PMID: 32514268 PMCID: PMC7257198 DOI: 10.1186/s11658-020-00223-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 04/30/2020] [Indexed: 02/07/2023] Open
Abstract
Recent interest in the role of ascorbate in crucial metabolic processes is driven by the growing number of medical reports that show beneficial effects of ascorbate supplementation for maintaining general well-being and recovery from a variety of medical conditions. The effect of ascorbate on the local body environment highly depends on its local concentration; at low concentrations it can cause the reduction of reactive oxygen and facilitate activities of enzymes, while at high concentrations it generates free radicals by reducing ferric ions. Ascorbate serving as an electron donor assists the iron-containing proteins and the iron transfer between various aqueous compartments. These functions require effective and adjustable mechanisms responsible for ascorbate biodistribution. In the paper we propose a new biophysical model of ascorbate redistribution between various aqueous body compartments. It combines recent experimental evidence regarding the ability of ascorbate to cross the lipid bilayer by unassisted diffusion, with active transport by well-characterized sodium vitamin C transporter (SVCT) membrane proteins. In the model, the intracellular concentration of ascorbate is maintained by the balance of two opposing fluxes: fast active and slow passive transport. The model provides a mechanistic understanding of ascorbate flux across the epidermal barrier in the gut as well as the role of astrocytes in ascorbate recycling in the brain. In addition, ascorbate passive diffusion across biological membranes, which depends on membrane electric potentials and pH gradients, provides the rationale for the correlation between ascorbate distribution and the transfer of iron ions inside a cell. The proposed approach provides, for the first time, a mechanistic account of processes leading to ascorbate physiological and cellular distribution, which helps to explain numerous experimental and clinical observations.
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Affiliation(s)
- Magdalena Przybyło
- Faculty of Biomedical Engineering, Wrocław University of Sciences and Technology, 50-370 Wrocław, Poland
- Lipid Systems Ltd, Krzemieniecka 48C, 54-613 Wrocław, Poland
| | - Marek Langner
- Faculty of Biomedical Engineering, Wrocław University of Sciences and Technology, 50-370 Wrocław, Poland
- Lipid Systems Ltd, Krzemieniecka 48C, 54-613 Wrocław, Poland
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30
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Haas MJ, Jurado-Flores M, Hammoud R, Feng V, Gonzales K, Onstead-Haas L, D Mooradian A. Inhibition of Pro-Inflammatory Cytokine Secretion by Select Antioxidants in Human Coronary Artery Endothelial Cells. INT J VITAM NUTR RES 2020; 90:103-112. [DOI: 10.1024/0300-9831/a000520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Abstract. Inflammatory and oxidative stress in endothelial cells are implicated in the pathogenesis of premature atherosclerosis in diabetes. To determine whether high-dextrose concentrations induce the expression of pro-inflammatory cytokines, human coronary artery endothelial cells (HCAEC) were exposed to either 5.5 or 27.5 mM dextrose for 24-hours and interleukin-1β (IL-1β), interleukin-2 (IL-2), interleukin-6 (IL-6), interleukin-8 (IL-8), and tumor necrosis factor α (TNF α) levels were measured by enzyme immunoassays. To determine the effect of antioxidants on inflammatory cytokine secretion, cells were also treated with α-tocopherol, ascorbic acid, and the glutathione peroxidase mimetic ebselen. Only the concentration of IL-1β in culture media from cells exposed to 27.5 mM dextrose increased relative to cells maintained in 5.5 mM dextrose. Treatment with α-tocopherol (10, 100, and 1,000 μM) and ascorbic acid (15, 150, and 1,500 μM) at the same time that the dextrose was added reduced IL-1β, IL-6, and IL-8 levels in culture media from cells maintained at 5.5 mM dextrose but had no effect on IL-1β, IL-6, and IL-8 levels in cells exposed to 27.5 mM dextrose. However, ebselen treatment reduced IL-1β, IL-6, and IL-8 levels in cells maintained in either 5.5 or 27.5 mM dextrose. IL-2 and TNF α concentrations in culture media were below the limit of detection under all experimental conditions studied suggesting that these cells may not synthesize detectable quantities of these cytokines. These results suggest that dextrose at certain concentrations may increase IL-1β levels and that antioxidants have differential effects on suppressing the secretion of pro-inflammatory cytokines in HCAEC.
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Affiliation(s)
- Michael J. Haas
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Marilu Jurado-Flores
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Ramadan Hammoud
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Victoria Feng
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Krista Gonzales
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Luisa Onstead-Haas
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
| | - Arshag D Mooradian
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Florida Jacksonville College of Medicine, Jacksonville, FL 32209
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31
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Giblin L, Yalçın AS, Biçim G, Krämer AC, Chen Z, Callanan MJ, Arranz E, Davies MJ. Whey proteins: targets of oxidation, or mediators of redox protection. Free Radic Res 2019; 53:1136-1152. [PMID: 31510814 DOI: 10.1080/10715762.2019.1632445] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bovine whey proteins are highly valued dairy ingredients. This is primarily due to their amino acid content, digestibility, bioactivities and their processing characteristics. One of the reported bioactivities of whey proteins is antioxidant activity. Numerous dietary intervention trials with humans and animals indicate that consumption of whey products can modulate redox biomarkers to reduce oxidative stress. This bioactivity has in part been assigned to whey peptides using a range of biochemical or cellular assays in vitro. Superimposing whey peptide sequences from gastrointestinal samples, with whey peptides proven to be antioxidant in vitro, allows us to propose peptides from whey likely to exhibit antioxidant activity in the diet. However, whey proteins themselves are targets of oxidation during processing particularly when exposed to high thermal loads and/or extensive processing (e.g. infant formula manufacture). Oxidative damage of whey proteins can be selective with regard to the residues that are modified and are associated with the degree of protein unfolding, with α-Lactalbumin more susceptible than β-Lactoglobulin. Such oxidative damage may have adverse effects on human health. This review summarises how whey proteins can modulate cellular redox pathways and conversely how whey proteins can be oxidised during processing. Given the extensive processing steps that whey proteins are often subjected to, we conclude that oxidation during processing is likely to compromise the positive health attributes associated with whey proteins.
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Affiliation(s)
- Linda Giblin
- Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - A Süha Yalçın
- Department of Biochemistry, School of Medicine, Marmara University, İstanbul, Turkey
| | - Gökhan Biçim
- Department of Biochemistry, School of Medicine, Marmara University, İstanbul, Turkey
| | - Anna C Krämer
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Zhifei Chen
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Michael J Callanan
- Department of Biological Sciences, Cork Institute of Technology, Cork, Ireland
| | - Elena Arranz
- Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
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32
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El Banna N, Hatem E, Heneman-Masurel A, Léger T, Baïlle D, Vernis L, Garcia C, Martineau S, Dupuy C, Vagner S, Camadro JM, Huang ME. Redox modifications of cysteine-containing proteins, cell cycle arrest and translation inhibition: Involvement in vitamin C-induced breast cancer cell death. Redox Biol 2019; 26:101290. [PMID: 31412312 PMCID: PMC6831881 DOI: 10.1016/j.redox.2019.101290] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/28/2019] [Accepted: 07/31/2019] [Indexed: 12/13/2022] Open
Abstract
Vitamin C (VitC) possesses pro-oxidant properties at high pharmacologic concentrations which favor repurposing VitC as an anti-cancer therapeutic agent. However, redox-based anticancer properties of VitC are yet partially understood. We examined the difference between the reduced and oxidized forms of VitC, ascorbic acid (AA) and dehydroascorbic acid (DHA), in terms of cytotoxicity and redox mechanisms toward breast cancer cells. Our data showed that AA displayed higher cytotoxicity towards triple-negative breast cancer (TNBC) cell lines in vitro than DHA. AA exhibited a similar cytotoxicity on non-TNBC cells, while only a minor detrimental effect on noncancerous cells. Using MDA-MB-231, a representative TNBC cell line, we observed that AA- and DHA-induced cytotoxicity were linked to cellular redox-state alterations. Hydrogen peroxide (H2O2) accumulation in the extracellular medium and in different intracellular compartments, and to a lesser degree, intracellular glutathione oxidation, played a key role in AA-induced cytotoxicity. In contrast, DHA affected glutathione oxidation and had less cytotoxicity. A "redoxome" approach revealed that AA treatment altered the redox state of key antioxidants and a number of cysteine-containing proteins including many nucleic acid binding proteins and proteins involved in RNA and DNA metabolisms and in energetic processes. We showed that cell cycle arrest and translation inhibition were associated with AA-induced cytotoxicity. Finally, bioinformatics analysis and biological experiments identified that peroxiredoxin 1 (PRDX1) expression levels correlated with AA differential cytotoxicity in breast cancer cells, suggesting a potential predictive value of PRDX1. This study provides insight into the redox-based mechanisms of VitC anticancer activity, indicating that pharmacologic doses of VitC and VitC-based rational drug combinations could be novel therapeutic opportunities for triple-negative breast cancer.
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Affiliation(s)
- Nadine El Banna
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Elie Hatem
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Amélie Heneman-Masurel
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Thibaut Léger
- Institut Jacques Monod, CNRS UMR 7592, Mass Spectrometry Laboratory, Université Paris Diderot, Paris, France
| | - Dorothée Baïlle
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Laurence Vernis
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Camille Garcia
- Institut Jacques Monod, CNRS UMR 7592, Mass Spectrometry Laboratory, Université Paris Diderot, Paris, France
| | - Sylvain Martineau
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Corinne Dupuy
- Institut Gustave Roussy, CNRS UMR 8200, Université Paris-Sud, Villejuif, France
| | - Stéphan Vagner
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Jean-Michel Camadro
- Institut Jacques Monod, CNRS UMR 7592, Mass Spectrometry Laboratory, Université Paris Diderot, Paris, France
| | - Meng-Er Huang
- Institut Curie, PSL Research University, CNRS UMR 3348, Université Paris-Sud, Université Paris-Saclay, Orsay, France.
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Baudin A, Paul S, Su C, Pang J. Controlling large Boolean networks with single-step perturbations. Bioinformatics 2019; 35:i558-i567. [PMID: 31510648 PMCID: PMC6612811 DOI: 10.1093/bioinformatics/btz371] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Motivation The control of Boolean networks has traditionally focussed on strategies where the perturbations are applied to the nodes of the network for an extended period of time. In this work, we study if and how a Boolean network can be controlled by perturbing a minimal set of nodes for a single-step and letting the system evolve afterwards according to its original dynamics. More precisely, given a Boolean network (BN), we compute a minimal subset Cmin of the nodes such that BN can be driven from any initial state in an attractor to another ‘desired’ attractor by perturbing some or all of the nodes of Cmin for a single-step. Such kind of control is attractive for biological systems because they are less time consuming than the traditional strategies for control while also being financially more viable. However, due to the phenomenon of state-space explosion, computing such a minimal subset is computationally inefficient and an approach that deals with the entire network in one-go, does not scale well for large networks. Results We develop a ‘divide-and-conquer’ approach by decomposing the network into smaller partitions, computing the minimal control on the projection of the attractors to these partitions and then composing the results to obtain Cmin for the whole network. We implement our method and test it on various real-life biological networks to demonstrate its applicability and efficiency. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Alexis Baudin
- Department of Computer Science, École Normale Supérieure Paris-Saclay, Cachan, France
| | - Soumya Paul
- Faculty of Science, Technology and Communication, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Cui Su
- Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg, Luxembourg
| | - Jun Pang
- Faculty of Science, Technology and Communication, University of Luxembourg, Esch-sur-Alzette, Luxembourg.,Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg, Luxembourg
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34
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Łukawski M, Dałek P, Borowik T, Foryś A, Langner M, Witkiewicz W, Przybyło M. New oral liposomal vitamin C formulation: properties and bioavailability. J Liposome Res 2019; 30:227-234. [PMID: 31264495 DOI: 10.1080/08982104.2019.1630642] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Vitamin C is the exogenous compound necessary for a variety of metabolic processes; therefore, the efficient delivery is critical for the maintenance of body homeostasis. Vitamin C pharmacokinetics and low quantities in processed foodstuff, necessitates its continuous supplementation. In the paper, we present the new liposomal formulation of vitamin C free of harmful organic solvents. The formulation was quantitatively characterized with respect to its chemically composition and nano-structuring. The vitamin C accessibility to cells from the formulation was evaluated using evidence derived from experiments performed on cell cultures. Finally, the enhanced bioavailability of vitamin C from the formulation was demonstrated in the medical experiment.
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Affiliation(s)
- Maciej Łukawski
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
| | - Paulina Dałek
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland.,Lipid Systems Ltd, Wrocław, Poland
| | | | - Aleksander Foryś
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Marek Langner
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland.,Lipid Systems Ltd, Wrocław, Poland
| | - Wojciech Witkiewicz
- Research and Development Centre, Specialized Hospital in Wrocław, Wrocław, Poland
| | - Magdalena Przybyło
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland.,Lipid Systems Ltd, Wrocław, Poland
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35
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Improved Adipocyte Viability in Autologous Fat Grafting With Ascorbic Acid–Supplemented Tumescent Solution. Ann Plast Surg 2019; 83:464-467. [DOI: 10.1097/sap.0000000000001857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Leonard SW, Bobe G, Traber MG. Stability of antioxidant vitamins in whole human blood during overnight storage at 4°C and frozen storage up to 6 months. INT J VITAM NUTR RES 2019; 88:151-157. [PMID: 30747603 DOI: 10.1024/0300-9831/a000485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
To determine optimal conditions for blood collection during clinical trials, where sample handling logistics might preclude prompt separation of erythrocytes from plasma, healthy subjects (n=8, 6 M/2F) were recruited and non-fasting blood samples were collected into tubes containing different anticoagulants (ethylenediaminetetra-acetic acid (EDTA), Li-heparin or Na-heparin). We hypothesized that heparin, but not EDTA, would effectively protect plasma tocopherols, ascorbic acid, and vitamin E catabolites (α- and γ-CEHC) from oxidative damage. To test this hypothesis, one set of tubes was processed immediately and plasma samples were stored at -80°C, while the other set was stored at 4°C and processed the following morning (~30 hours) and analyzed, or the samples were analyzed after 6 months of storage. Plasma ascorbic acid, as measured using HPLC with electrochemical detection (LC-ECD) decreased by 75% with overnight storage using EDTA as an anticoagulant, but was unchanged when heparin was used. Neither time prior to processing, nor anticoagulant, had any significant effects upon plasma α- or γ-tocopherols or α- or γ-CEHC concentrations. α- and γ-tocopherol concentrations remained unchanged after 6 months of storage at -80°C, when measured using either LC-ECD or LC/mass spectrometry. Thus, refrigeration of whole blood at 4°C overnight does not change plasma α- or γ-tocopherol concentrations or their catabolites. Ascorbic acid is unstable in whole blood when EDTA is used as an anticoagulant, but when whole blood is collected with heparin, it can be stored overnight and subsequently processed.
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Affiliation(s)
- Scott W Leonard
- 1 Linus Pauling Institute, Oregon State University, Corvallis, USA
| | - Gerd Bobe
- 1 Linus Pauling Institute, Oregon State University, Corvallis, USA
| | - Maret G Traber
- 1 Linus Pauling Institute, Oregon State University, Corvallis, USA.,2 College of Public Health and Human Sciences, Oregon State University, Corvallis, USA.,3 Environmental Health Sciences Center; Oregon State University, Corvallis, USA
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Bober P, Tomková Z, Alexovič M, Ropovik I, Sabo J. The unfolded protein response controls endoplasmic reticulum stress-induced apoptosis of MCF-7 cells via a high dose of vitamin C treatment. Mol Biol Rep 2019; 46:1275-1284. [PMID: 30694453 DOI: 10.1007/s11033-019-04598-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 01/07/2019] [Indexed: 12/11/2022]
Abstract
Recent in vitro studies have shown that vitamin C (Vit C) with pro-oxidative properties causes cytotoxicity of breast cancer cells by selective oxidative stress. However, the effect of Vit C in itself at different concentration levels on MCF-7 breast cancer cell line after 24 h, has not yet been described. We aimed to examine the effect of Vit C on the viability and signalling response of MCF-7/WT (MCF-7 wild-type) cells that were exposed to various concentrations (0.125-4 mM) of Vit C during 24 h. The cytotoxic effect of Vit C on MCF-7/VitC (MCF-7/WT after added 2 mM Vit C) was observed, resulting in a decrease of cell index after 12 h. Also, the cytotoxicity of Vit C (2 mM) after 24 h was confirmed by flow cytometry, i.e., increase of dead, late apoptotic, and depolarized dead MCF-7/VitC cells compared to MCF-7/WT cells. Moreover, changes in proteomic profile of MCF-7/VitC cells compared to the control group were investigated via label-free quantitative mass spectrometry and post-translational modification. Using bioinformatics assessment (i.e., iPathwayGuide and SPIA R packages), a significantly impacted pathway in MCF-7/VitC was identified, namely the protein processing in endoplasmic reticulum. The semi-quantitative change (log2fold change = 4.5) and autophosphorylation at Thr-446 of protein kinase (PKR) (involved in this pathway) indicates that PKR protein could be responsible for the unfolded protein response and inhibition of the cell translation during endoplasmic reticulum stress, and eventually, for cell apoptosis. These results suggest that increased activity of PKR (Thr-446 autophosphorylation) related to cytotoxic effect of Vit C (2 mM) may cause the MCF-7 cells death.
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Affiliation(s)
- Peter Bober
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, Trieda SNP 1, 04011, Košice, Slovakia.
| | - Zuzana Tomková
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, Trieda SNP 1, 04011, Košice, Slovakia
| | - Michal Alexovič
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, Trieda SNP 1, 04011, Košice, Slovakia
| | - Ivan Ropovik
- Department of Pre-school and Elementary Education and Psychology, Faculty of Education, University of Presov, 17. novembra 15, 08001, Presov, Slovakia
| | - Ján Sabo
- Department of Medical and Clinical Biophysics, Faculty of Medicine, University of P.J. Šafárik in Košice, Trieda SNP 1, 04011, Košice, Slovakia
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38
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Blaszczak W, Barczak W, Masternak J, Kopczyński P, Zhitkovich A, Rubiś B. Vitamin C as a Modulator of the Response to Cancer Therapy. Molecules 2019; 24:E453. [PMID: 30695991 PMCID: PMC6384696 DOI: 10.3390/molecules24030453] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 01/24/2019] [Accepted: 01/26/2019] [Indexed: 01/04/2023] Open
Abstract
Ascorbic acid (vitamin C) has been gaining attention as a potential treatment for human malignancies. Various experimental studies have shown the ability of pharmacological doses of vitamin C alone or in combinations with clinically used drugs to exert beneficial effects in various models of human cancers. Cytotoxicity of high doses of vitamin C in cancer cells appears to be related to excessive reactive oxygen species generation and the resulting suppression of the energy production via glycolysis. A hallmark of cancer cells is a strongly upregulated aerobic glycolysis, which elevates its relative importance as a source of ATP (Adenosine 5'-triphosphate). Aerobic glycolysis is maintained by a highly increased uptake of glucose, which is made possible by the upregulated expression of its transporters, such as GLUT-1, GLUT-3, and GLUT-4. These proteins can also transport the oxidized form of vitamin C, dehydroascorbate, permitting its preferential uptake by cancer cells with the subsequent depletion of critical cellular reducers as a result of ascorbate formation. Ascorbate also has a potential to affect other aspects of cancer cell metabolism due to its ability to promote reduction of iron(III) to iron(II) in numerous cellular metalloenzymes. Among iron-dependent dioxygenases, important targets for stimulation by vitamin C in cancer include prolyl hydroxylases targeting the hypoxia-inducible factors HIF-1/HIF-2 and histone and DNA demethylases. Altered metabolism of cancer cells by vitamin C can be beneficial by itself and promote activity of specific drugs.
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Affiliation(s)
- Wiktoria Blaszczak
- Radiobiology Lab, The Greater Poland Cancer Centre, Garbary, 61-866 Poznan, Poland.
| | - Wojciech Barczak
- Radiobiology Lab, The Greater Poland Cancer Centre, Garbary, 61-866 Poznan, Poland.
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, Garbary, 61-866 Poznan, Poland.
| | - Julia Masternak
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 60-355 Poznan, Poland.
| | - Przemysław Kopczyński
- Centre for Orthodontic Mini-implants at the Department and Clinic of Maxillofacial Orthopedics and Orthodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland.
| | - Anatoly Zhitkovich
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI 02912, USA.
| | - Błażej Rubiś
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 60-355 Poznan, Poland.
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39
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Meshram RJ, Goundge MB, Kolte BS, Gacche RN. An in silico approach in identification of drug targets in Leishmania: A subtractive genomic and metabolic simulation analysis. Parasitol Int 2018; 69:59-70. [PMID: 30503238 DOI: 10.1016/j.parint.2018.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/17/2018] [Accepted: 11/28/2018] [Indexed: 12/26/2022]
Abstract
Leishmaniasis is one of the major health issue in developing countries. The current therapeutic regimen for this disease is less effective with lot of adverse effects thereby warranting an urgent need to develop not only new and selective drug candidates but also identification of effective drug targets. Here we present subtractive genomics procedure for identification of putative drug targets in Leishmania. Comprehensive druggability analysis has been carried out in the current work for identified metabolic pathways and drug targets. We also demonstrate effective metabolic simulation methodology to pinpoint putative drug targets in threonine biosynthesis pathway. Metabolic simulation data from the current study indicate that decreasing flux through homoserine kinase reaction can be considered as a good therapeutic opportunity. The data from current study is expected to show new avenue for designing experimental strategies in search of anti-leishmanial agents.
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Affiliation(s)
- Rohan J Meshram
- Bioinformatics Centre, Savitribai Phule Pune University, Pune 411007, India.
| | - Mayuri B Goundge
- Bioinformatics Centre, Savitribai Phule Pune University, Pune 411007, India
| | - Baban S Kolte
- Bioinformatics Centre, Savitribai Phule Pune University, Pune 411007, India; Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Rajesh N Gacche
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, India
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40
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Cantoni O, Guidarelli A, Fiorani M. Mitochondrial Uptake and Accumulation of Vitamin C: What Can We Learn from Cell Culture Studies? Antioxid Redox Signal 2018; 29:1502-1515. [PMID: 28699359 DOI: 10.1089/ars.2017.7253] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
SIGNIFICANCE The mitochondrial fraction of l-ascorbic acid (AA) is of critical importance for the regulation of the redox status of these organelles and for cell survival. Recent Advances: Most cell types take up AA by the high-affinity sodium-dependent vitamin C transporter 2 (SVCT2) sensitive to inhibition by dehydroascorbic acid (DHA). DHA can also be taken up by glucose transporters (GLUTs) and then reduced back to AA. DHA concentrations, normally very low in biological fluids, may only become significant next to superoxide-releasing cells. Very little is known about the mechanisms mediating the mitochondrial transport of the vitamin. CRITICAL ISSUES Information on AA transport is largely derived from studies using cultured cells and is therefore conditioned by possible cell culture effects as overexpression of SVCT2 in the plasma membrane and mitochondria. Mitochondrial SVCT2 is susceptible to inhibition by DHA and transports AA with a low affinity as a consequence of the restrictive ionic conditions. In some cells, however, high-affinity mitochondrial transport of AA is observed. Mitochondrial uptake of DHA may take place through GLUTs, an event followed by its prompt reduction to AA in the matrix. Intracellular levels of DHA are, however, normally very low. FUTURE DIRECTIONS We need to establish, or rule out, the role and significance of mitochondrial SVCT2 in vivo. The key question for mitochondrial DHA transport is instead related to its very low intracellular concentrations.
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Affiliation(s)
- Orazio Cantoni
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo ," Urbino, Italy
| | - Andrea Guidarelli
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo ," Urbino, Italy
| | - Mara Fiorani
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo ," Urbino, Italy
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41
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Ayromlou H, Pourvahed P, Jahanjoo F, Dolatkhah H, Shakouri SK, Dolatkhah N. Dietary and Serum Level of Antioxidants in the Elderly with Mild Impaired and Normal Cognitive Function: A Case-Control Study. IRANIAN RED CRESCENT MEDICAL JOURNAL 2018. [DOI: 10.5812/ircmj.64847] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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42
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Chappell AJ, Simper TN. Nutritional Peak Week and Competition Day Strategies of Competitive Natural Bodybuilders. Sports (Basel) 2018; 6:sports6040126. [PMID: 30352979 PMCID: PMC6315482 DOI: 10.3390/sports6040126] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/11/2018] [Accepted: 10/22/2018] [Indexed: 01/09/2023] Open
Abstract
Bodybuilders utilize peaking strategies in a bid to fine-tune their aesthetics for competition day. The most prevalent peaking strategies utilized by natural bodybuilders are unreported in the current literature. Eighty-one (M-59, F-22) natural bodybuilders were recruited from competitions during the 2016 and 2017 British Natural Bodybuilder Federation seasons. Competitors completed a 34-item questionnaire designed to investigate peaking and contest day strategies. The questionnaire listed commonly utilized peaking strategies and provided additional space for qualitative information. Analysis of the data indicated that carbohydrate (CHO), water, and sodium manipulation were the most commonly utilized peaking strategies. The consumption of high glycemic index CHO was the most common competition day strategy. Only 6.2% of competitors reported following their regular diet the week prior to competition. The CHO manipulation strategies followed were similar to classical CHO loading, whereby bodybuilders attempt to maximize muscle glycogen concentrations. Furthermore, bodybuilders attempted to remove superfluous water by exploiting the diuretic/polyuria effect associated with water loading/restriction. The potentially deleterious effects of peaking on bodybuilders' health is considered and the efficacy of these strategies to enhance appearance is discussed. The findings of the present investigation are likely to be of interest to bodybuilders and their coaches.
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Affiliation(s)
- Andrew J Chappell
- Food and Nutrition Group, Sheffield School of Business, Sheffield Hallam University, Howard St. Sheffield S1 1WB, UK.
| | - Trevor N Simper
- Food and Nutrition Group, Sheffield School of Business, Sheffield Hallam University, Howard St. Sheffield S1 1WB, UK.
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43
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Abstract
It is proposed that proteins/enzymes be classified into two classes according to their essentiality for immediate survival/reproduction and their function in long-term health: that is, survival proteins versus longevity proteins. As proposed by the triage theory, a modest deficiency of one of the nutrients/cofactors triggers a built-in rationing mechanism that favors the proteins needed for immediate survival and reproduction (survival proteins) while sacrificing those needed to protect against future damage (longevity proteins). Impairment of the function of longevity proteins results in an insidious acceleration of the risk of diseases associated with aging. I also propose that nutrients required for the function of longevity proteins constitute a class of vitamins that are here named "longevity vitamins." I suggest that many such nutrients play a dual role for both survival and longevity. The evidence for classifying taurine as a conditional vitamin, and the following 10 compounds as putative longevity vitamins, is reviewed: the fungal antioxidant ergothioneine; the bacterial metabolites pyrroloquinoline quinone (PQQ) and queuine; and the plant antioxidant carotenoids lutein, zeaxanthin, lycopene, α- and β-carotene, β-cryptoxanthin, and the marine carotenoid astaxanthin. Because nutrient deficiencies are highly prevalent in the United States (and elsewhere), appropriate supplementation and/or an improved diet could reduce much of the consequent risk of chronic disease and premature aging.
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Affiliation(s)
- Bruce N Ames
- Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute (CHORI), Oakland, CA 94609-1809
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44
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Vissers MCM, Das AB. Potential Mechanisms of Action for Vitamin C in Cancer: Reviewing the Evidence. Front Physiol 2018; 9:809. [PMID: 30018566 PMCID: PMC6037948 DOI: 10.3389/fphys.2018.00809] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/08/2018] [Indexed: 12/12/2022] Open
Abstract
Whether vitamin C (ascorbate) has a role to play as an anti-cancer agent has been debated for decades. Ascorbate has been used by cancer patients in an unregulated environment, either as a dietary supplement or in pharmacological doses administered by infusion, with numerous reports of clinical benefit, but in the absence of rigorous clinical trial data. The design of appropriate clinical trials has been hindered by a lack of understanding of the mechanism(s) of action that would inform the choice of effective dose, timing of administration and likely responsive cancer models. More recently, expanded understanding of the biological activities of ascorbate has led to a number of plausible hypotheses for mechanisms of anti-cancer activity. Prominent among these are the generation of significant quantities of hydrogen peroxide by the autoxidation of supra-physiological concentrations of ascorbate and stimulation of the 2-oxoglutarate-dependent dioxygenase family of enzymes (2-OGDDs) that have a cofactor requirement for ascorbate. Hydrogen peroxide generation is postulated to generate oxidative stress that preferentially targets cancer cells. The 2-OGDDs include the hydroxylases that regulate the hypoxic response, a major driver of tumor survival, angiogenesis, stem cell phenotype and metastasis, and the epigenetic histone and DNA demethylases. The latter are of particular interest, with recent studies suggesting a promising role for ascorbate in the regulation of the ten-eleven translocase (TET) DNA demethylases in hematological cancers. Support for these proposed mechanisms has come from many in vitro studies, and xenograft animal models have consistently shown an anti-cancer effect of ascorbate administration. However, decisive evidence for any particular mechanism(s) of action is not yet available from an in vivo setting. With a number of early phase clinical trials currently underway, evidence for potential mechanism(s) of action is required to inform the most appropriate study design and choice of cancer model. Hopefully such information will result in sound clinical data that will avert adding any further controversy to this already contentious debate.
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Affiliation(s)
- Margreet C M Vissers
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, Christchurch, New Zealand
| | - Andrew B Das
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, Christchurch, New Zealand
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45
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Smirnoff N. Ascorbic acid metabolism and functions: A comparison of plants and mammals. Free Radic Biol Med 2018; 122:116-129. [PMID: 29567393 PMCID: PMC6191929 DOI: 10.1016/j.freeradbiomed.2018.03.033] [Citation(s) in RCA: 303] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/15/2018] [Accepted: 03/17/2018] [Indexed: 02/07/2023]
Abstract
Ascorbic acid is synthesised by eukaryotes, the known exceptions being primates and some other animal groups which have lost functional gulonolactone oxidase. Prokaryotes do not synthesise ascorbate and do not need an ascorbate supply, so the functions that are essential for mammals and plants are not required or are substituted by other compounds. The ability of ascorbate to donate electrons enables it to act as a free radical scavenger and to reduce higher oxidation states of iron to Fe2+. These reactions are the basis of its biological activity along with the relative stability of the resulting resonance stabilised monodehydroascorbate radical. The importance of these properties is emphasised by the evolution of at least three biosynthetic pathways and production of an ascorbate analogue, erythroascorbate, by fungi. The iron reducing activity of ascorbate maintains the reactive centre Fe2+ of 2-oxoglutarate-dependent dioxygenases (2-ODDs) thus preventing inactivation. These enzymes have diverse functions and, recently, the possibility that ascorbate status in mammals could influence 2-ODDs involved in histone and DNA demethylation thereby influencing stem cell differentiation and cancer has been uncovered. Ascorbate is involved in iron uptake and transport in plants and animals. While the above biochemical functions are shared between mammals and plants, ascorbate peroxidase (APX) is an enzyme family limited to plants and photosynthetic protists. It provides these organisms with increased capacity to remove H2O2 produced by photosynthetic electron transport and photorespiration. The Fe reducing activity of ascorbate enables hydroxyl radical production (pro-oxidant effect) and the reactivity of dehydroascorbate (DHA) and reaction of its degradation products with proteins (dehydroascorbylation and glycation) is potentially damaging. Ascorbate status influences gene expression in plants and mammals but at present there is little evidence that it acts as a specific signalling molecule. It most likely acts indirectly by influencing the redox state of thiols and 2-ODD activity. However, the possibility that dehydroascorbylation is a regulatory post-translational protein modification could be explored.
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Affiliation(s)
- Nicholas Smirnoff
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK.
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Siasos G, Tsigkou V, Kosmopoulos M, Theodosiadis D, Simantiris S, Tagkou NM, Tsimpiktsioglou A, Stampouloglou PK, Oikonomou E, Mourouzis K, Philippou A, Vavuranakis M, Stefanadis C, Tousoulis D, Papavassiliou AG. Mitochondria and cardiovascular diseases-from pathophysiology to treatment. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:256. [PMID: 30069458 DOI: 10.21037/atm.2018.06.21] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mitochondria are the source of cellular energy production and are present in different types of cells. However, their function is especially important for the heart due to the high demands in energy which is achieved through oxidative phosphorylation. Mitochondria form large networks which regulate metabolism and the optimal function is achieved through the balance between mitochondrial fusion and mitochondrial fission. Moreover, mitochondrial function is upon quality control via the process of mitophagy which removes the damaged organelles. Mitochondrial dysfunction is associated with the development of numerous cardiac diseases such as atherosclerosis, ischemia-reperfusion (I/R) injury, hypertension, diabetes, cardiac hypertrophy and heart failure (HF), due to the uncontrolled production of reactive oxygen species (ROS). Therefore, early control of mitochondrial dysfunction is a crucial step in the therapy of cardiac diseases. A number of anti-oxidant molecules and medications have been used but the results are inconsistent among the studies. Eventually, the aim of future research is to design molecules which selectively target mitochondrial dysfunction and restore the capacity of cellular anti-oxidant enzymes.
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Affiliation(s)
- Gerasimos Siasos
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.,Division of Cardiovascular, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Vasiliki Tsigkou
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Marinos Kosmopoulos
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Dimosthenis Theodosiadis
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Spyridon Simantiris
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Nikoletta Maria Tagkou
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Athina Tsimpiktsioglou
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Panagiota K Stampouloglou
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Evangelos Oikonomou
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Konstantinos Mourouzis
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Anastasios Philippou
- Department of Experimental Physiology, Medical School, National and Kapodistrian University of Athens, Greece
| | - Manolis Vavuranakis
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | | | - Dimitris Tousoulis
- Department of Cardiology, "Hippokration" General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Athanasios G Papavassiliou
- Department of Biological Chemistry, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
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Amanullah A, Upadhyay A, Joshi V, Mishra R, Jana NR, Mishra A. Progressing neurobiological strategies against proteostasis failure: Challenges in neurodegeneration. Prog Neurobiol 2017; 159:1-38. [DOI: 10.1016/j.pneurobio.2017.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 06/01/2017] [Accepted: 08/25/2017] [Indexed: 02/07/2023]
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Boulos S, Nyström L. Complementary Sample Preparation Strategies for Analysis of Cereal β-Glucan Oxidation Products by UPLC-MS/MS. Front Chem 2017; 5:90. [PMID: 29164106 PMCID: PMC5673685 DOI: 10.3389/fchem.2017.00090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/17/2017] [Indexed: 11/18/2022] Open
Abstract
The oxidation of cereal (1→3,1→4)-β-D-glucan can influence the health promoting and technological properties of this linear, soluble homopolysaccharide by introduction of new functional groups or chain scission. Apart from deliberate oxidative modifications, oxidation of β-glucan can already occur during processing and storage, which is mediated by hydroxyl radicals (HO•) formed by the Fenton reaction. We present four complementary sample preparation strategies to investigate oat and barley β-glucan oxidation products by hydrophilic interaction ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), employing selective enzymatic digestion, graphitized carbon solid phase extraction (SPE), and functional group labeling techniques. The combination of these methods allows for detection of both lytic (C1, C3/4, C5) and non-lytic (C2, C4/3, C6) oxidation products resulting from HO•-attack at different glucose-carbons. By treating oxidized β-glucan with lichenase and β-glucosidase, only oxidized parts of the polymer remained in oligomeric form, which could be separated by SPE from the vast majority of non-oxidized glucose units. This allowed for the detection of oligomers with mid-chain glucuronic acids (C6) and carbonyls, as well as carbonyls at the non-reducing end from lytic C3/C4 oxidation. Neutral reducing ends were detected by reductive amination with anthranilic acid/amide as labeled glucose and cross-ring cleaved units (arabinose, erythrose) after enzyme treatment and SPE. New acidic chain termini were observed by carbodiimide-mediated amidation of carboxylic acids as anilides of gluconic, arabinonic, and erythronic acids. Hence, a full characterization of all types of oxidation products was possible by combining complementary sample preparation strategies. Differences in fine structure depending on source (oat vs. barley) translates to the ratio of observed oxidized oligomers, with in-depth analysis corroborating a random HO•-attack on glucose units irrespective of glycosidic linkage and neighborhood. The method was demonstrated to be (1) sufficiently sensitive to allow for the analysis of oxidation products also from a mild ascorbate-driven Fenton reaction, and (2) to be specific for cereal β-glucan even in the presence of other co-oxidized polysaccharides. This opens doors to applications in food processing to assess potential oxidations and provides the detailed structural basis to understand the effect oxidized functional groups have on β-glucan's health promoting and technological properties.
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Affiliation(s)
| | - Laura Nyström
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
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Cook CD, Hill AS, Guo M, Stockdale L, Papps JP, Isaacson KB, Lauffenburger DA, Griffith LG. Local remodeling of synthetic extracellular matrix microenvironments by co-cultured endometrial epithelial and stromal cells enables long-term dynamic physiological function. Integr Biol (Camb) 2017; 9:271-289. [PMID: 28317948 DOI: 10.1039/c6ib00245e] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mucosal barrier tissues, comprising a layer of tightly-bonded epithelial cells in intimate molecular communication with an underlying matrix-rich stroma containing fibroblasts and immune cells, are prominent targets for drugs against infection, chronic inflammation, and other disease processes. Although human in vitro models of such barriers are needed for mechanistic studies and drug development, differences in extracellular matrix (ECM) needs of epithelial and stromal cells hinder efforts to create such models. Here, using the endometrium as an example mucosal barrier, we describe a synthetic, modular ECM hydrogel suitable for 3D functional co-culture, featuring components that can be remodeled by cells and that respond dynamically to sequester local cell-secreted ECM characteristic of each cell type. The synthetic hydrogel combines peptides with off-the-shelf reagents and is thus accessible to cell biology labs. Specifically, we first identified a single peptide as suitable for initial attachment of both endometrial epithelial and stromal cells using a 2D semi-empirical screen. Then, using a co-culture system of epithelial cells cultured on top of gel-encapsulated stromal cells, we show that inclusion of ECM-binding peptides in the hydrogel, along with the integrin-binding peptide, leads to enhanced accumulation of basement membrane beneath the epithelial layer and more fibrillar collagen matrix assembly by stromal cells over two weeks in culture. Importantly, endometrial co-cultures composed of either cell lines or primary cells displayed hormone-mediated differentiation as assessed by morphological changes and secretory protein production. A multiplex analysis of apical cytokine and growth factor secretion comparing cell lines and primary cells revealed strikingly different patterns, underscoring the importance of using primary cell models in analysis of cell-cell communication networks. In summary, we define a "one-size-fits-all" synthetic ECM that enables long-term, physiologically responsive co-cultures of epithelial and stromal cells in a mucosal barrier format.
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Affiliation(s)
- Christi D Cook
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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Vitamin C Status and Cognitive Function: A Systematic Review. Nutrients 2017; 9:nu9090960. [PMID: 28867798 PMCID: PMC5622720 DOI: 10.3390/nu9090960] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/21/2017] [Accepted: 08/28/2017] [Indexed: 02/07/2023] Open
Abstract
Vitamin C plays a role in neuronal differentiation, maturation, myelin formation and modulation of the cholinergic, catecholinergic, and glutaminergic systems. This review evaluates the link between vitamin C status and cognitive performance, in both cognitively intact and impaired individuals. We searched the PUBMED, SCOPUS, SciSearch and the Cochrane Library from 1980 to January 2017, finding 50 studies, with randomised controlled trials (RCTs, n = 5), prospective (n = 24), cross-sectional (n = 17) and case-control (n = 4) studies. Of these, 36 studies were conducted in healthy participants and 14 on cognitively impaired individuals (including Alzheimer’s and dementia). Vitamin C status was measured using food frequency questionnaires or plasma vitamin C. Cognition was assessed using a variety of tests, mostly the Mini-Mental-State-Examination (MMSE). In summary, studies demonstrated higher mean vitamin C concentrations in the cognitively intact groups of participants compared to cognitively impaired groups. No correlation between vitamin C concentrations and MMSE cognitive function was apparent in the cognitively impaired individuals. The MMSE was not suitable to detect a variance in cognition in the healthy group. Analysis of the studies that used a variety of cognitive assessments in the cognitively intact was beyond the scope of this review; however, qualitative assessment revealed a potential association between plasma vitamin C concentrations and cognition. Due to a number of limitations in these studies, further research is needed, utilizing plasma vitamin C concentrations and sensitive cognitive assessments that are suitable for cognitively intact adults.
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