1
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Zhong S, Kopec RE. Bioaccessibility and Caco-2 cell uptake of iron chlorophyllin using a biologically relevant digestion model. J Nutr Biochem 2024; 132:109698. [PMID: 38969147 DOI: 10.1016/j.jnutbio.2024.109698] [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: 02/13/2024] [Revised: 05/08/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
Iron deficiency remains a top nutrient deficiency worldwide. Iron chlorophyllin (IC), a compound structurally analogous to heme, utilizes the protoporphyrin ring of chlorophyll to bind iron. IC has previously been shown to deliver more iron to Caco-2 cells than FeSO4, the most common form prescribed for supplementation. However, previous test conditions used digestive conditions outside of those observed in humans. This study sought to assess IC bioaccessibility and Caco-2 cell uptake using physiologically relevant digestive solutions, pH, and incubation time, as compared to other iron sources (i.e., FeSO4, and hemoglobin (Hb)). Co-digestion with ascorbic acid (AA) and albumin was also investigated. Following gastric, duodenal, and jejunal digestion, IC-bound iron was less bioaccessible than iron delivered as FeSO4, and IC-bound iron was less bioaccessible than Hb-bound iron. IC-bound iron bioaccessibility was not affected by AA and was enhanced 2x when co-digested with a low dose of albumin. However, Caco-2 cell incubation with IC-containing digesta increased cell ferritin 2.5x more than FeSO4 alone, and less than Hb. IC with AA or with 400 mg albumin also increased cell ferritin more than IC alone, with the greatest increases observed following incubation of digesta containing IC + AA + 400 mg albumin. These results suggest IC can serve as an improved source of iron for supplementation as compared to FeSO4. These results also support further in vivo investigations of IC-based iron delivery in populations at risk of iron deficiency.
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Affiliation(s)
- Siqiong Zhong
- Department of Human Sciences, OSU Interdisciplinary Nutrition Program, The Ohio State University, Columbus, Ohio, USA
| | - Rachel E Kopec
- Department of Human Sciences, OSU Interdisciplinary Nutrition Program, The Ohio State University, Columbus, Ohio, USA; Foods for Health Discovery Theme, The Ohio State University, Columbus, Ohio, USA.
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2
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Feye KM, Rasmussen MA, Yeater KM, Anderson RC, Crippen TL, Harvey RB, Poole TL, Ricke SC. Chlorophyllin Supplementation of Medicated or Unmedicated Swine Diets Impact on Fecal Escherichia coli and Enterococci. Animals (Basel) 2024; 14:1955. [PMID: 38998066 PMCID: PMC11240447 DOI: 10.3390/ani14131955] [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: 05/20/2024] [Revised: 06/12/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024] Open
Abstract
Considering that certain catabolic products of anaerobic chlorophyll degradation inhibit efflux pump activity, this study was conducted to test if feeding pigs a water-soluble chlorophyllin product could affect the antibiotic resistance profiles of select wild-type populations of fecal bacteria. Trial 1 evaluated the effects of chlorophyllin supplementation (300 mg/meal) on fecal E. coli and enterococcal populations in pigs fed twice daily diets supplemented without or with ASP 250 (containing chlortetracycline, sulfamethazine and penicillin at 100, 100 and 50 g/ton, respectively). Trial 2, conducted similarly, evaluated chlorophyllin supplementation in pigs fed diets supplemented with or without 100 g tylosin/ton. Each trial lasted 12 days, and fecal samples were collected and selectively cultured at 4-day intervals to enumerate the total numbers of E. coli and enterococci as well as populations of these bacteria phenotypically capable of growing in the presence of the fed antibiotics. Performance results from both studies revealed no adverse effect (p > 0.05) of chlorophyllin, antibiotic or their combined supplementation on average daily feed intake or average daily gain, although the daily fed intake tended to be lower (p = 0.053) for pigs fed diets supplemented with tylosin than those fed diets without tylosin. The results from trial 1 showed that the ASP 250-medicated diets, whether without or with chlorophyllin supplementation, supported higher (p < 0.05) fecal E. coli populations than the non-medicated diets. Enterococcal populations, however, were lower, albeit marginally and not necessarily significantly, in feces from pigs fed the ASP 250-medicated diet than those fed the non-medicated diet. Results from trial 2 likewise revealed an increase (p < 0.05) in E. coli and, to a lesser extent, enterococcal populations in feces collected from pigs fed the tylosin-medicated diet compared with those fed the non-medicated diet. Evidence indicated that the E. coli and enterococcal populations in trial 1 were generally insensitive to penicillin or chlortetracycline, as there were no differences between populations recovered without or with antibiotic selection. Conversely, a treatment x day of treatment interaction observed in trial 2 (p < 0.05) provided evidence, albeit slight, of an enrichment of tylosin-insensitive enterococci in feces from the pigs fed the tylosin-medicated but not the non-medicated diet. Under the conditions of the present study, it is unlikely that chlorophyllin-derived efflux pump inhibitors potentially present in the chlorophyllin-fed pigs were able to enhance the efficacy of the available antibiotics. However, further research specifically designed to optimize chlorophyll administration could potentially lead to practical applications for the swine industry.
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Affiliation(s)
- Kristina M. Feye
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA
| | - Mark A. Rasmussen
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA;
| | - Kathleen M. Yeater
- United States Department of Agriculture/Agricultural Research Service, Plains Area Office of the Director, Fort Collins, CO 80521, USA;
| | - Robin C. Anderson
- Southern Plains Agricultural Research Center, United States Department of Agriculture/Agricultural Research Service, College Station, TX 77845, USA; (R.C.A.); (T.L.C.); (R.B.H.); (T.L.P.)
| | - Tawni L. Crippen
- Southern Plains Agricultural Research Center, United States Department of Agriculture/Agricultural Research Service, College Station, TX 77845, USA; (R.C.A.); (T.L.C.); (R.B.H.); (T.L.P.)
| | - Roger B. Harvey
- Southern Plains Agricultural Research Center, United States Department of Agriculture/Agricultural Research Service, College Station, TX 77845, USA; (R.C.A.); (T.L.C.); (R.B.H.); (T.L.P.)
| | - Toni L. Poole
- Southern Plains Agricultural Research Center, United States Department of Agriculture/Agricultural Research Service, College Station, TX 77845, USA; (R.C.A.); (T.L.C.); (R.B.H.); (T.L.P.)
| | - Steven C. Ricke
- Meat Science and Animal Biologics Discovery Program, Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706, USA
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3
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Roca M, Pérez-Gálvez A. Absolute chlorophyll composition of commercial green food colorants and coloring foodstuff by HPLC-ESI-QTOF-MS/MS: Copper chlorophyllins. Food Chem 2024; 436:137728. [PMID: 37857195 DOI: 10.1016/j.foodchem.2023.137728] [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: 05/15/2023] [Revised: 09/15/2023] [Accepted: 10/08/2023] [Indexed: 10/21/2023]
Abstract
Sodium copper chlorophyllins (SCC) are used worldwide to brightly color green foods as authorized food colorants, although their composition is only partially known. This study applied a combination of experimental and in silico techniques to describe the SCC profile in commercial colorant products and coloring foods. Different approaches have allowed identifying five new chlorophyll compounds in the food colorants besides the description of unique product ions able to distinguish among different chlorophyll isomers for the first time. In addition, a detailed isotope cluster analysis has revealed the formation of two new structures of copper chlorophyllins, featuring the copper in peripheral positions instead of the central pocket. Finally, a computational study of thermodynamic parameters and molecular descriptors has determined the factors responsible for the formation of the two main copper chlorophyllins present in the food colorants. This information will sustain alternative processing leading to SCC products with tailored composition.
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Affiliation(s)
- María Roca
- Group of Chemistry and Biochemistry of Pigments. Food Phytochemistry Department, Instituto de la Grasa (CSIC), Campus Universitario, Building 46, 41013 Sevilla, Spain
| | - Antonio Pérez-Gálvez
- Group of Chemistry and Biochemistry of Pigments. Food Phytochemistry Department, Instituto de la Grasa (CSIC), Campus Universitario, Building 46, 41013 Sevilla, Spain.
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4
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Martins T, Barros AN, Rosa E, Antunes L. Enhancing Health Benefits through Chlorophylls and Chlorophyll-Rich Agro-Food: A Comprehensive Review. Molecules 2023; 28:5344. [PMID: 37513218 PMCID: PMC10384064 DOI: 10.3390/molecules28145344] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 06/23/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Chlorophylls play a crucial role in photosynthesis and are abundantly found in green fruits and vegetables that form an integral part of our diet. Although limited, existing studies suggest that these photosynthetic pigments and their derivatives possess therapeutic properties. These bioactive molecules exhibit a wide range of beneficial effects, including antioxidant, antimutagenic, antigenotoxic, anti-cancer, and anti-obesogenic activities. However, it is unfortunate that leafy materials and fruit peels often go to waste in the food supply chain, contributing to the prevailing issue of food waste in modern societies. Nevertheless, these overlooked materials contain valuable bioactive compounds, including chlorophylls, which offer significant health benefits. Consequently, exploring the potential of these discarded resources, such as utilizing them as functional food ingredients, aligns with the principles of a circular economy and presents exciting opportunities for exploitation.
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Affiliation(s)
- Tânia Martins
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro (CITAB), 5000-801 Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), 5000-801 Vila Real, Portugal
| | - Ana Novo Barros
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro (CITAB), 5000-801 Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), 5000-801 Vila Real, Portugal
| | - Eduardo Rosa
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro (CITAB), 5000-801 Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), 5000-801 Vila Real, Portugal
| | - Luís Antunes
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes and Alto Douro (CITAB), 5000-801 Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), 5000-801 Vila Real, Portugal
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5
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Chlorophyllin sodium copper salt in hydrogel formulations: spectrophotometric stability studies and in vitro release. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-022-02653-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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6
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Zhao L, Ckurshumova W, Fefer M, Liu J, Hoare T. Fabrication, Characterization and In Planta Uptake of Engineered Surfactant Nanovesicles for the Delivery of the Biostimulant Sodium Copper Chlorophyllin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:15028-15037. [PMID: 36414271 DOI: 10.1021/acs.jafc.2c05279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Effective delivery of agrochemicals requires control over bioactive release kinetics coupled with effective penetration of the bioactive into plants. Herein, we demonstrate the fabrication of hybrid nanovesicles based on sodium dodecylbenzenesulfonate (SDBS) and cetyltrimethylammonium bromide (CTAB) for enabling effective delivery of the biostimulant sodium copper chlorophyllin (Cu-chl) into plants. SDBS-CTAB nanovesicles exhibited a particle size of 107 nm with a well-defined spherical morphology, while modified formulations that included small fractions of the unsaturated dopant Span 80 yielded larger nanovesicles that were softer and more irregular in shape. All nanovesicles maintained high colloidal stability over >4 weeks and enabled sustained Cu-chl release, with the incorporation of Span 80 into the membranes enabling controllable acceleration of the release rate. Nanovesicle encapsulation improved the photostability of Cu-chl bioactive 3-4 × relative to that of free Cu-chl and enabled significant penetration of Cu-chl into the plant root without inducing any significant phytotoxicity.
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Affiliation(s)
- Lisha Zhao
- Department of Chemical Engineering, 1280 Main Street West, Hamilton, Ontario, CanadaL8S 4L7
| | - Wenzi Ckurshumova
- Suncor AgroScience, 2489 North Sheridan Way, Mississauga, Ontario, CanadaL5K 1A8
| | - Michael Fefer
- Suncor AgroScience, 2489 North Sheridan Way, Mississauga, Ontario, CanadaL5K 1A8
| | - Jun Liu
- Suncor AgroScience, 2489 North Sheridan Way, Mississauga, Ontario, CanadaL5K 1A8
| | - Todd Hoare
- Department of Chemical Engineering, 1280 Main Street West, Hamilton, Ontario, CanadaL8S 4L7
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7
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Tianshu B, Lixuan Z, Chunhong W. The Synthesis of Thermostable, Strongly Basic Anion-Exchange Resins Using Cross-Linked Biguanide and Its Application in the Extraction of Sodium Copper Chlorophyllin. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1211:123436. [DOI: 10.1016/j.jchromb.2022.123436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/29/2022]
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8
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Chen G, Che L, Cai X, Zhu P, Ran J. Bioinformatic Analysis Identifies Biomarkers and Treatment Targets in Primary Sjögren's Syndrome Patients with Fatigue. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7697558. [PMID: 35075430 PMCID: PMC8783724 DOI: 10.1155/2022/7697558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/23/2021] [Indexed: 11/17/2022]
Abstract
We aim to identify the common genes, biological pathways, and treatment targets for primary Sjögren's syndrome patients with varying degrees of fatigue features. We select datasets about transcriptomic analyses of primary Sjögren's syndrome (pSS) patients with different degrees of fatigue features and normal controls in peripheral blood. We identify common differentially expressed genes (DEGs) to find shared pathways and treatment targets for pSS patients with fatigue and design a protein-protein interaction (PPI) network by some practical bioinformatic tools. And hub genes are detected based on the PPI network. We perform biological pathway analysis of common genes by Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway. Lastly, potential treatment targets for pSS patients with fatigue are found by the Enrichr platform. We discovered that 27 DEGs are identified in pSS patients with fatigue features and the severe fatigued pSS-specific gene is RTP4. DEGs are mainly localized in the mitochondria, endosomes, endoplasmic reticulum, and cytoplasm and are involved in the biological process by which interferon acts on cells and cells defend themselves against viruses. Molecular functions mainly involve the process of RNA synthesis. The DEGs of pSS are involved in the signaling pathways of viruses such as hepatitis C, influenza A, measles, and EBV. Acetohexamide PC3 UP, suloctidil HL60 UP, prenylamine HL60 UP, and chlorophyllin CTD 00000324 are the four most polygenic drug molecules. PSS patients with fatigue features have specific gene regulation, and chlorophyllin may alleviate fatigue symptoms in pSS patients.
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Affiliation(s)
- Guangshu Chen
- Department of Endocrinology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou 510220, China
| | - Li Che
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Xingdong Cai
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Ping Zhu
- Department of Endocrinology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou 510220, China
| | - Jianmin Ran
- Department of Endocrinology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou 510220, China
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9
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Viera I, Herrera M, Roca M. In Vitro Bioaccessibility Protocol for Chlorophylls. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:8777-8786. [PMID: 34328725 PMCID: PMC8389804 DOI: 10.1021/acs.jafc.1c02815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/09/2021] [Accepted: 07/16/2021] [Indexed: 05/24/2023]
Abstract
The daily ingestion of chlorophylls has been estimated at 50 g, but the knowledge about their bioaccessibility is limited. Different in vitro models have been utilized to estimate their potential bioavailability, but among other factors, the diversity of structures, chemical properties, and lability of chlorophylls hamper the investigations. By the first time, three extreme food matrices, one rich in fiber (vegetable puree), one rich in fat (virgin olive oil), and one liquid (fruit juice), have been assayed for chlorophyll bioaccessibility, controlling crucial variables. Chlorophyll polarity and food matrix were the determining factors, but surprisingly, chlorophyll bioaccessibility was affected during the application of the in vitro standardized protocol. Therefore, the present research has identified the reactions that can be biased during the estimation of chlorophyll bioaccessibility, defining a specific protocol in the function of chlorophyll structures.
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Affiliation(s)
- Isabel Viera
- Group of Chemistry and Biochemistry
of Pigments. Food Phytochemistry Department, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas
(CSIC), University Campus, Building 46, Carretera de Utrera km. 1, Sevilla 41013, Spain
| | - Marta Herrera
- Group of Chemistry and Biochemistry
of Pigments. Food Phytochemistry Department, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas
(CSIC), University Campus, Building 46, Carretera de Utrera km. 1, Sevilla 41013, Spain
| | - María Roca
- Group of Chemistry and Biochemistry
of Pigments. Food Phytochemistry Department, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas
(CSIC), University Campus, Building 46, Carretera de Utrera km. 1, Sevilla 41013, Spain
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10
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Pucci C, Martinelli C, Degl'Innocenti A, Desii A, De Pasquale D, Ciofani G. Light-Activated Biomedical Applications of Chlorophyll Derivatives. Macromol Biosci 2021; 21:e2100181. [PMID: 34212510 DOI: 10.1002/mabi.202100181] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/06/2021] [Indexed: 02/01/2023]
Abstract
Tetrapyrroles are the basis of essential physiological functions in most living organisms. These compounds represent the basic scaffold of porphyrins, chlorophylls, and bacteriochlorophylls, among others. Chlorophyll derivatives, obtained by the natural or artificial degradation of chlorophylls, present unique properties, holding great potential in the scientific and medical fields. Indeed, they can act as cancer-preventing agents, antimutagens, apoptosis inducers, efficient antioxidants, as well as antimicrobial and immunomodulatory molecules. Moreover, thanks to their peculiar optical properties, they can be exploited as photosensitizers for photodynamic therapy and as vision enhancers. Most of these molecules, however, are highly hydrophobic and poorly soluble in biological fluids, and may display undesired toxicity due to accumulation in healthy tissues. The advent of nanomedicine has prompted the development of nanoparticles acting as carriers for chlorophyll derivatives, facilitating their targeted administration with demonstrated applicability in diagnosis and therapy. In this review, the chemical and physical properties of chlorophyll derivatives that justify their usage in the biomedical field, with particular regard to light-activated dynamics are described. Their role as antioxidants and photoactive agents are discussed, introducing the most recent nanomedical applications and focusing on inorganic and organic nanocarriers exploited in vitro and in vivo.
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Affiliation(s)
- Carlotta Pucci
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Chiara Martinelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan, 20133, Italy
| | - Andrea Degl'Innocenti
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Andrea Desii
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Daniele De Pasquale
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
| | - Gianni Ciofani
- Istituto Italiano di Tecnologia, Smart Bio-Interfaces, Viale Rinaldo Piaggio 34, Pontedera, Pisa, 56025, Italy
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Rao MVV, Juneja A, Maulik M, Adhikari T, Sharma S, Gupta J, Panchal Y, Yadav N. Emerging trends from COVID-19 research registered in the Clinical Trials Registry - India. Indian J Med Res 2021; 153:26-63. [PMID: 33818466 PMCID: PMC8184082 DOI: 10.4103/ijmr.ijmr_2556_20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Since the beginning of the year, the deadly coronavirus pandemic, better known as coronavirus disease 2019 (COVID-19), brought the entire world to an unprecedented halt. In tandem with the global scenario, researchers in India are actively engaged in the conduct of clinical research to counter the pandemic. This review attempts to provide a comprehensive overview of the COVID-19 research in India including design aspects, through the clinical trials registered in the Clinical Trials Registry - India (CTRI) till June 5, 2020. One hundred and twenty two registered trials on COVID-19 were extracted from the CTRI database. These trials were categorized into modern medicine (n=42), traditional medicine (n=67) and miscellaneous (n=13). Of the 42 modern medicine trials, 28 were on repurposed drugs, used singly (n=24) or in combination (n=4). Of these 28 trials, 23 were to evaluate their therapeutic efficacy in different severities of the disease. There were nine registered trials on cell- and plasma-based therapies, two phytopharmaceutical trials and three vaccine trials. The traditional medicine trials category majorly comprised Ayurveda (n=45), followed by homeopathy (n=14) and others (n=8) from Yoga, Siddha and Unani. Among the traditional medicine category, 31 trials were prophylactic and 36 were therapeutic, mostly conducted on asymptomatic or mild-to-moderate COVID-19 patients. This review would showcase the research being conducted on COVID-19 in the country and highlight the research gaps to steer further studies.
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Affiliation(s)
| | - Atul Juneja
- ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Mohua Maulik
- Clinical Trials Registry-India, ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Tulsi Adhikari
- ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Saurabh Sharma
- ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Jyotsna Gupta
- Clinical Trials Registry-India, ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Yashmin Panchal
- Clinical Trials Registry-India, ICMR-National Institute of Medical Statistics, New Delhi, India
| | - Neha Yadav
- Clinical Trials Registry-India, ICMR-National Institute of Medical Statistics, New Delhi, India
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12
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Clark NF, Taylor-Robinson AW. COVID-19 Therapy: Could a Copper Derivative of Chlorophyll a Be Used to Treat Lymphopenia Associated With Severe Symptoms of SARS-CoV-2 Infection? Front Med (Lausanne) 2021; 8:620175. [PMID: 33777973 PMCID: PMC7994343 DOI: 10.3389/fmed.2021.620175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Nicole F. Clark
- Institute for Applied Ecology, University of Canberra, Bruce, ACT, Australia
- Centre for Marine Bioproducts Development, College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Andrew W. Taylor-Robinson
- Infectious Diseases Research Group, School of Health, Medical and Applied Sciences, Central Queensland University, Brisbane, QLD, Australia
- College of Health and Human Sciences, Charles Darwin University, Casuarina, NT, Australia
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13
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Zhong S, Bird A, Kopec RE. The Metabolism and Potential Bioactivity of Chlorophyll and Metallo‐chlorophyll Derivatives in the Gastrointestinal Tract. Mol Nutr Food Res 2021; 65:e2000761. [DOI: 10.1002/mnfr.202000761] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/08/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Siqiong Zhong
- OSU Interdisciplinary Nutrition Graduate Program, Department of Human Sciences The Ohio State University Columbus OH 43214 USA
| | - Amanda Bird
- OSU Interdisciplinary Nutrition Graduate Program, Department of Human Sciences The Ohio State University Columbus OH 43214 USA
- Department of Molecular Genetics The Ohio State University Columbus OH 43214 USA
| | - Rachel E. Kopec
- OSU Interdisciplinary Nutrition Graduate Program, Department of Human Sciences The Ohio State University Columbus OH 43214 USA
- Foods for Health Discovery Theme The Ohio State University Columbus OH 43214 USA
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14
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Janik-Zabrotowicz E, Arczewska M, Prochniewicz P, Świetlicka I, Terpiłowski K. Stability of Chlorophyll a Monomer Incorporated into Cremophor EL Nano-Micelles under Dark and Moderate Light Conditions. Molecules 2020; 25:E5059. [PMID: 33143338 PMCID: PMC7672595 DOI: 10.3390/molecules25215059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 01/10/2023] Open
Abstract
In this paper, stability of chlorophyll a monomers encapsulated into the Cremophor EL nano-micelles was studied under dark and moderate light conditions, typical of a room with natural or artificial lighting, in the presence of oxygen. The pigment stability against visible light was determined using the dynamic light scattering and molecular spectroscopy (UV-Vis absorption and stationary fluorescence) methods. Chlorophyll a, at the molar concentration of 10-5 M, was dissolved in the 5 wt% Cremophor emulsion for comparison in the ethanolic solution. The stability of such a self-assembly pigment-detergent nano-system is important in the light of its application on the commercial-scale. The presented results indicate the high stability of the pigment monomeric molecular organization in the nano-emulsion. During the storage in the dark, the half-lifetime was calculated as about 7 months. Additionally, based on the shape of absorption and fluorescence emission spectra, chlorophyll aggregation in the Cremophor EL aqueous solution along with the time was excluded. Moreover, the average size of detergent micelles as chlorophyll carriers was not affected after 70 days of the nano-system storage. Pigment stability against the moderate white light (0.1 mW) did not differ significantly from storage conditions in the dark. The photooxidation products, detected by occurrence of new absorption and fluorescence emission bands, was estimated on the negligible level. The stability of such a self-assembly pigment-detergent nano-system would potentially broaden the field of chlorophyll a (chl a) application in the food industry, medicine or artificial photosynthesis models.
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Affiliation(s)
- Ewa Janik-Zabrotowicz
- Department of Cell Biology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20–033 Lublin, Poland;
| | - Marta Arczewska
- Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20–950 Lublin, Poland;
| | - Patrycja Prochniewicz
- Department of Cell Biology, Institute of Biological Sciences, Maria Curie-Sklodowska University, Akademicka 19, 20–033 Lublin, Poland;
| | - Izabela Świetlicka
- Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20–950 Lublin, Poland;
| | - Konrad Terpiłowski
- Department of Physical Chemistry-Interfacial Phenomena, Maria Curie-Sklodowska University, 3, 20–031 Lublin, Poland;
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15
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Hayes M, Ferruzzi MG. Update on the bioavailability and chemopreventative mechanisms of dietary chlorophyll derivatives. Nutr Res 2020; 81:19-37. [DOI: 10.1016/j.nutres.2020.06.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/24/2020] [Accepted: 06/11/2020] [Indexed: 12/30/2022]
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16
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Liu Z, Xia S, Wang X, Lan Q, Li P, Xu W, Wang Q, Lu L, Jiang S. Sodium Copper Chlorophyllin Is Highly Effective against Enterovirus (EV) A71 Infection by Blocking Its Entry into the Host Cell. ACS Infect Dis 2020; 6:882-890. [PMID: 32233455 DOI: 10.1021/acsinfecdis.0c00096] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Human enteroviruses (HEVs) pose an ongoing threat to global public health. Particularly, enterovirus-A71 (EV-A71), the main pathogen causing hand-foot-and-mouth disease (HFMD), has caused ongoing outbreaks globally in recent years associated with severe neurological manifestations and several deaths. Currently, no effective antivirals are available for the prevention or treatment of EV-A71 infection. In this study, we found that sodium copper chlorophyllin (CHL), a health food additive and an over-the-counter anticancer medicine or treatment to reduce the odor of urine or feces, exhibited potent inhibitory activity against infection by divergent EV-A71 and coxsackievirus-A16 (CV-A16) isolates at a low micromolar concentration with excellent safety. The antiviral activity of each was confirmed by colorimetric viral infection and qRT-PCR assays. A series of mechanistic studies showed that CHL did not target the host cell but blocked the entry of EV-A71 and CV-A16 into the host cell at the postattachment stage. In the mouse model, CHL could significantly reduce the viral titer in the lungs and muscles. Since CHL has been used in clinics for many years with excellent safety, it has the potential to be further developed into a prophylactic or therapeutic to prevent or treat HFMD caused by EV-A71 or CV-A16 infection.
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Affiliation(s)
- Zezhong Liu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Shuai Xia
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Xinling Wang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qiaoshuai Lan
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Peiyu Li
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wei Xu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qian Wang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Lu Lu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Shibo Jiang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, New York 10065, United States
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17
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Wang F, Terazono Y, Liu J, Fefer M, Pelton RH. Adsorption of aqueous copper chlorophyllin mixtures on model surfaces. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Mendel M, Karlik W, Chłopecka M. The impact of chlorophyllin on deoxynivalenol transport across jejunum mucosa explants obtained from adult pigs. Mycotoxin Res 2019; 35:187-196. [PMID: 30710317 PMCID: PMC6478627 DOI: 10.1007/s12550-019-00342-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 01/08/2023]
Abstract
Regardless of the efforts put into preventing or reducing fungal growth, extensive mycotoxin contamination has been reported in animal feeds. In the case of pigs, one of the mycotoxins of major concern is deoxynivalenol (DON). The use of adsorbents as feed additives represents one of the strategies to control mycotoxins' contamination in feedstuff. Therefore, the aim of the study was to verify the ability of chlorophyllin (CHL) to reduce the absorption rate of DON in swine mucosa explants. Intestine was obtained from routinely slaughtered adult pigs. The mucosa explants were studied by means of Ussing chamber technique. The effect of DON (10 and 30 μg/ml) on mucosa viability and permeability and CHL (100 μg/ml) impact on DON (30 μg/ml) absorption was verified. The results revealed that mucosa explants isolated from adult animals remained unaffected for 90 min in the presence of DON in the lower concentration (10 μg/ml). Mycotoxin in the higher dose (30 μg/ml) increased mucosa permeability (decreased transepithelial electrical resistance value) and enhanced paracellular transport of lucifer yellow and mannitol but did not affect lactate dehydrogenase leakage. The introduction of CHL neither diminished the absorption rate of DON across swine mucosa explants nor prevented the toxic effects of DON on intestine. In conclusion, the results confirm the negative effect of DON on pig jejunum mucosa. However, the toxic effect of DON was observed only when it was used in relatively high doses. A promising adsorbent agent, CHL, failed to reduce the intensity of DON transport across intestine under in vitro conditions.
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Affiliation(s)
- Marta Mendel
- Division of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, 8 Ciszewskiego St, Warsaw, Poland.
| | - Wojciech Karlik
- Division of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, 8 Ciszewskiego St, Warsaw, Poland
| | - Magdalena Chłopecka
- Division of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, 8 Ciszewskiego St, Warsaw, Poland
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19
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Abstract
Although there is no legal and clear definition of the term “natural food colorant”, the market trends, and consequently industrial and commercial interest, have turned to foods with added natural pigments. This progressive substitution of artificial colorants has faced chemical complications with some colors, with a lack of stable green hues being one of them. Several strategies have been applied for green color stabilization in processed foods, from the formation of metallochlorophylls to the microencapsulation of green pigments. However, at present, the utilization of green coloring foodstuffs, which are considered an ingredient in the EU, seems to be the more successful solution for the market. Besides those topics, the present review aims to clarify the current confusion between the different chlorophyll compounds that form part of the authorized green food colorants. In this sense, legislations from different countries are compared. Finally, and in line with current concerns, the knowledge gathered so far in relation to the absorption, distribution, metabolism and excretion of all green natural food colorants is reviewed.
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21
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Norman M, Bartczak P, Zdarta J, Tomala W, Żurańska B, Dobrowolska A, Piasecki A, Czaczyk K, Ehrlich H, Jesionowski T. Sodium Copper Chlorophyllin Immobilization onto Hippospongia communis Marine Demosponge Skeleton and Its Antibacterial Activity. Int J Mol Sci 2016; 17:ijms17101564. [PMID: 27690001 PMCID: PMC5085623 DOI: 10.3390/ijms17101564] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/05/2016] [Accepted: 09/09/2016] [Indexed: 01/31/2023] Open
Abstract
In this study, Hippospongia communis marine demosponge skeleton was used as an adsorbent for sodium copper chlorophyllin (SCC). Obtained results indicate the high sorption capacity of this biomaterial with respect to SCC. Batch experiments were performed under different conditions and kinetic and isotherms properties were investigated. Acidic pH and the addition of sodium chloride increased SCC adsorption. The experimental data were well described by a pseudo-second order kinetic model. Equilibrium adsorption isotherms were determined and the experimental data were analyzed using both Langmuir and Freundlich isotherms. The effectiveness of the process was confirmed by 13C Cross Polarization Magic Angle Spinning Nuclear Magnetic Resonance (13C CP/MAS NMR), Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS) and thermogravimetric analysis (TG). This novel SCC-sponge-based functional hybrid material was found to exhibit antimicrobial activity against the gram-positive bacterium Staphylococcus aureus.
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Affiliation(s)
- Małgorzata Norman
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Przemysław Bartczak
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Jakub Zdarta
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Wiktor Tomala
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Barbara Żurańska
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
| | - Anna Dobrowolska
- Department of Biotechnology and Food Microbiology, Poznan University of Life Sciences, 60627 Poznan, Poland.
| | - Adam Piasecki
- Institute of Materials Science and Engineering, Faculty of Mechanical Engineering and Management, Poznan University of Technology, Jana Pawla II 24, 60965 Poznan, Poland.
| | - Katarzyna Czaczyk
- Department of Biotechnology and Food Microbiology, Poznan University of Life Sciences, 60627 Poznan, Poland.
| | - Hermann Ehrlich
- Institute of Experimental Physics, TU Bergakademie Freiberg, Leipziger 23, 09599 Freiberg, Germany.
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland.
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22
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CHENG XIN, YU GUOJUN, HU JIANGPING, XU XUEFENG, LUO FANG, SHEN PING, ZHANG GUOSHENG, YANG NING. Clinical study of Shengxuening tablet combined with rHuEPO for the treatment of renal anemia of maintenance hemodialysis patients. Exp Ther Med 2016; 12:157-160. [PMID: 27347032 PMCID: PMC4906941 DOI: 10.3892/etm.2016.3307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 04/28/2016] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to investigate the clinical effects of Shengxuening tablet (silkworm excrement) combined with recombinant human erythropoietin (rHuEPO) for the treatment of renal anemia of maintenance hemodialysis (MHD) patients. Seventy-two MHD patients with renal anemia were included in the study and randomly divided into the control (n=34) and observation (n=38) groups. Patients in the control group were treated by hypodermic injection of 100-150 U/(kg·w) rHuEPO and patients in the observation group were treated by rHuEPO + 1.0 g t.i.d. p.o. Shengxuening tablet. The two groups were assisted by conventional treatments including iron, folic acid, vitamin B12 and L-carnitine. After 3 and 6 months, improvement of anemia was compared. After 3 months, the hemoglobin, hematocrit, serum ferritin and transferrin saturation levels of the observation group were significantly higher than those of the control group (p<0.05). In addition, C-reactive protein and superoxide dismutase levels of the observation group were significantly lower than those of the control group (p<0.05). After 6 months, indices of the observation group were ameliorated while the improvement of control group was not obvious, and indices of the observation group were significantly higher than those of the control group (p<0.05). Consumption of rHuEPO in the observation group was significantly less than that of the control group, and the total effective rate was significantly higher than that of the control group (p<0.05). In conclusion, Shengxuening tablet combined with rHuEPO was safe and effective for the treatment of renal anemia of MHD patients.
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Affiliation(s)
- XIN CHENG
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - GUOJUN YU
- Division of Nephrology, The Affiliated Hospital of Henan Province Chinese Medicine Research Institute, Zhengzhou, Henan 450004, P.R. China
| | - JIANGPING HU
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - XUEFENG XU
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - FANG LUO
- Division of Endocrinology, Zhengzhou Central Hospital, Zhengzhou, Henan 450007, P.R. China
| | - PING SHEN
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - GUOSHENG ZHANG
- Division of Nephrology, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
| | - NING YANG
- Department of Science and Education, Zhengzhou TCM Hospital, Zhengzhou, Henan 450000, P.R. China
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23
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Kachenpukdee N, Santerre CR, Ferruzzi MG, Oonsivilai R. Modified Dietary Fiber from Cassava Pulp and Assessment of Mercury Bioaccessibility and Intestinal Uptake Using anIn VitroDigestion/Caco-2 Model System. J Food Sci 2016; 81:T1854-63. [DOI: 10.1111/1750-3841.13336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 02/19/2016] [Accepted: 04/16/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Natta Kachenpukdee
- School of Food Technology, Inst. of Agricultural Technology; Suranare Univ. of Technology; Nakhon Ratchasima Thailand
| | | | | | - Ratchadaporn Oonsivilai
- School of Food Technology, Inst. of Agricultural Technology; Suranare Univ. of Technology; Nakhon Ratchasima Thailand
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24
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Experimental application of Lactobacillus fermentum CCM 7421 in combination with chlorophyllin in dogs. Appl Microbiol Biotechnol 2015; 99:8681-90. [DOI: 10.1007/s00253-015-6724-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/20/2015] [Accepted: 05/25/2015] [Indexed: 12/31/2022]
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25
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Scientific Opinion on re‐evaluation of copper complexes of chlorophylls (E 141(i)) and chlorophyllins (E 141(ii)) as food additives. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.4151] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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26
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Serpeloni JM, Almeida MR, Mercadante AZ, Bianchi MLP, Antunes LMG. Effects of lutein and chlorophyll b on GSH depletion and DNA damage induced by cisplatin in vivo. Hum Exp Toxicol 2014; 32:828-36. [PMID: 23821640 DOI: 10.1177/0960327112468911] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recent studies have proposed the use of low concentrations of phytochemicals and combinations of phytochemicals in chemoprevention to reduce cytotoxicity and simulate normal ingestion through diet. The purpose of the present study was to evaluate whether the DNA damage, chromosome instability, and oxidative stress induced by cisplatin (cDDP) are modulated by a combination of the natural pigments lutein (LT) and chlorophyll b (CLb). The protective effects observed for synergism between phytochemicals have not been completely investigated. The comet assay and micronucleus test were performed and the catalase activities and glutathione (GSH) concentrations were measured in the peripheral blood, bone marrow, liver, and kidney cells of mice. The comet assay and micronucleus test results revealed that the pigments LT and CLb were not genotoxic or mutagenic and that the pigments presented antigenotoxic and antimutagenic effects in the different cell types evaluated. This protective effect is likely related to antioxidant properties in peripheral blood cells through the prevention of cDDP-induced GSH depletion. Altogether our results show that the combination of LT and CLb, which are both usually present in the same foods, such as leafy green vegetables, can be used safely.
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Affiliation(s)
- J M Serpeloni
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo. Avenida do Café, s/n, Ribeirão Preto, São Paulo, Brasil.
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27
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Pimentel E, Cruces MP, Zimmering S. A Further Study of the Role of Copper in Regard to the Antimutagenic Action of Sodium Copper Chlorophyllin (SCC) in Somatic Cells of Drosophila melanogaster. Biomark Insights 2013; 8:29-33. [PMID: 23531495 PMCID: PMC3603386 DOI: 10.4137/bmi.s11081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Previous findings suggest that copper plays a crucial role in the antimutagenic effect of sodium copper chlorophyllin (SCC). The objective of the current research was to compare the antimutagenic effects of two SCC compounds with different amounts of copper (3.7% and 5.4%, respectively) on the genetic damage induced by gamma rays in somatic cells of Drosophila. Data indicate that an increase in copper content of 31.5% in SCC-5.4 resulted in a greater inhibition of gamma ray genetic damage of 49% whereas only a 2% inhibition with SCC-3.7 occurred. Of greater interest is the association of SCC with a variety of uses in humans, such as a chemo preventive agent and food supplement. A greater attention to the concentration of copper in the SCC product in use should be required.
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Affiliation(s)
- Emilio Pimentel
- Departamento de Biología, Instituto Nacional de Investigaciones Nucleares (ININ), Carretera México-Toluca S/N, La Marquesa, Ocoyoacac, México CP, México
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28
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Hou X, Yang R, Xu H, Yang Y. Adsorption Kinetic and Thermodynamic Studies of Silk Dyed with Sodium Copper Chlorophyllin. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300201j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiuliang Hou
- Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu, 214122, China
- Jiangsu Sunshine Group, Sunshine Industrial Park, Jiangyin, Jiangsu,
214126, China
| | - Ruiling Yang
- Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu, 214122, China
| | | | - Yiqi Yang
- Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu, 214122, China
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29
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30
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Roca M. In vitro digestive stability and uptake by Caco-2 human intestinal cells of nonfluorescent chlorophyll catabolites. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.07.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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31
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Serpeloni JM, Grotto D, Aissa AF, Mercadante AZ, Bianchi MDLP, Antunes LMG. An evaluation, using the comet assay and the micronucleus test, of the antigenotoxic effects of chlorophyll b in mice. Mutat Res 2011; 725:50-6. [PMID: 21763449 DOI: 10.1016/j.mrgentox.2011.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 06/28/2011] [Accepted: 06/29/2011] [Indexed: 02/06/2023]
Abstract
We investigated the effects of the dietary pigment chlorophyll b (CLb) on cisplatin (cDDP)-induced oxidative stress and DNA damage, using the comet assay in mouse peripheral blood cells and the micronucleus (MN) test in bone marrow and peripheral blood cells. We also tested for thiobarbituric acid reactive substances (TBARS) and reduced glutathione (GSH) in liver and kidney tissues, as well as catalase (CAT) activity and GSH in total blood. CLb (0.2 and 0.5mg/kg b.w.) was administrated by gavage every day for 13 days. On the 14th day of the experiment, 6 mg/kg cDDP or saline was delivered intraperitoneally. Treatment with cDDP led to a significant decrease in DNA migration and an increase in MN frequency in both cell types, bone marrow and peripheral blood cells. In the kidneys of mice treated with cDDP, TBARS levels were increased, whereas GSH levels were depleted in kidney and liver. In mice that were pre-treated with CLb and then treated with cDDP, TBARS levels maintained normal concentrations and GSH did not differ from cDDP group. The improvement of oxidative stress biomarkers after CLb pre-treatment was associated with a decrease in DNA damage, mainly for the highest dose evaluated. Furthermore, CLb also slightly reduced the frequency of chromosomal breakage and micronucleus formation in mouse bone marrow and peripheral blood cells. These results show that pre-treatment with CLb attenuates cDDP-induced oxidative stress, chromosome instability, and lipid peroxidation.
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Affiliation(s)
- Juliana Mara Serpeloni
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, Brazil.
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32
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Lagerqvist A, Håkansson D, Frank H, Seidel A, Jenssen D. Structural requirements for mutation formation from polycyclic aromatic hydrocarbon dihydrodiol epoxides in their interaction with food chemopreventive compounds. Food Chem Toxicol 2010; 49:879-86. [PMID: 21172398 DOI: 10.1016/j.fct.2010.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/26/2010] [Accepted: 12/13/2010] [Indexed: 01/28/2023]
Abstract
Chinese hamster V79 cells were used to investigate the protective effect of four known antimutagens present in food, chlorophyllin (CHL), ellagic acid (EA), epigallocathechingallate (EGCG) and benzylisothiocyanate (BITC), against potent mutagenic polycyclic aromatic hydrocarbon diol epoxides (PAH-DE) derived from benzo[a]pyrene (BP), dibenzo[a,h]anthracene (DBA), dibenzo[a,l]pyrene (DBP), and benzo[c]phenanthrene (BPh) known to be deposited on crops from polluted ambient air or formed during food processing. As fjord-region PAH-DE are more toxic and mutagenic than bay-region PAH-DE, we adjusted the concentrations of PAH-DE to induce approximately the same levels of adducts. The studies were performed using an assay indicating toxicity in terms of reduced cell proliferation together with the V79 Hprt assay for monitoring mutant frequencies. CHL significantly increased the survival and showed a protective effect against the mutagenicity of all PAH-DE. A significant protective effect of EA was found towards the mutagenicity of BPDE, DBPDE and BPhDE and with EGCG for BPDE and BPhDE. BITC had a slight positive effect on the mutagenicity of DBADE and BPhDE. Taken together, a novel and unexpected finding was that the antimutagenic activity could differ as much as by a factor of 7 towards four carcinogenic PAH metabolites being relatively similar in structure and genotoxic activity.
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Affiliation(s)
- Anne Lagerqvist
- Department of Genetics, Microbiology and Toxicology, Arrhenius Laboratories of Natural Sciences, Stockholm University, S-106 91 Stockholm, Sweden.
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33
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SHIM SOONMI, KWON HOONJEONG. ASSESSING ABSORBABILITY OF BIOACTIVE COMPONENTS IN ALOE USINGIN VITRODIGESTION MODEL WITH HUMAN INTESTINAL CELL. J Food Biochem 2010. [DOI: 10.1111/j.1745-4514.2009.00289.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Yamada H, Shirai A, Kato K, Kimura J, Ichiba H, Yajima T, Fukushima T. Development of a Quinazoline-Based Chelating Ligand for Zinc Ion and Its Application to Validation of a Zinc-Ion-Coordinated Compound. Chem Pharm Bull (Tokyo) 2010; 58:875-8. [DOI: 10.1248/cpb.58.875] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiroshi Yamada
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Akina Shirai
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Keisuke Kato
- Department of Organic Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Junko Kimura
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Hideaki Ichiba
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Takehiko Yajima
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
| | - Takeshi Fukushima
- Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Toho University
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35
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Shim SM, Ferruzzi MG, Kim YC, Janle EM, Santerre CR. Impact of phytochemical-rich foods on bioaccessibility of mercury from fish. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.05.030] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gallardo-Guerrero L, Gandul-Rojas B, Mínguez-Mosquera MI. Digestive stability, micellarization, and uptake by Caco-2 human intestinal cell of chlorophyll derivatives from different preparations of pea (Pisum sativum L.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:8379-86. [PMID: 18759438 DOI: 10.1021/jf8013684] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The digestive stability, efficiency of micellarization, and cellular accumulation of the chlorophyll pigments of different preparations of pea were investigated, using an in vitro digestion procedure coupled with human intestinal Caco-2 cells. Fresh pea (FP), cooked fresh pea (CFP), frozen pea (FZP), cooked frozen pea (CFZP), and canned pea (CP) were subjected to simulated digestion. Although after digestion the pigment profile was modified for all samples, except CP, allomerization reactions and greater destruction of chlorophylls were observed in only FP, which should be due to enzymes in FP that were denaturalized in the rest of the test foods. A pigment extract of CFZP was also subjected to in vitro digestion, showing a positive effect of the food matrix on the pigment digestive stability. The transfer of the chlorophyll pigments from the digesta to the micellar fraction was significantly more efficient in CFZP (57%, p < 0.0001), not significantly ( p > 0.05) different between CFP, FZP, and CP (28-35%), and lowest in FP (20%). Pheophorbide a stood out as the most-micellarized chlorophyll derivative in all of the samples, reaching levels of up to 98%. Incubation of Caco-2 cells with micellar fractions at the same concentration prepared from each test food showed that pigment absorption was considerably lower ( p < 0.006) in cells incubated with FP, whereas there were no differences among the rest of the preparations. Therefore, factors associated with the food matrix could inhibit or mediate the chlorophyll pigment absorption. These results demonstrated that the industrial preservation processes of peafreezing and canningas well as the cooking have a positive effect on the bioaccessibility and bioavailability of the chlorophyll pigments with respect to the FP sample, emphasizing CFZP with greater bioaccesibilty degree.
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Affiliation(s)
- Lourdes Gallardo-Guerrero
- Chemistry and Biochemistry Pigment Group, Department of Food Biotechnology, Instituto de la Grasa, CSIC, Avenida Padre García Tejero 4, 41012 Sevilla, Spain
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Nelson R, Ferruzzi M. Synthesis and Bioaccessibility of Fe-Pheophytin Derivatives from Crude Spinach Extract. J Food Sci 2008; 73:H86-91. [DOI: 10.1111/j.1750-3841.2008.00783.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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House PG, Schnitzer CS. SERRS and visible extinction spectroscopy of copper chlorophyllin on silver colloids as a function of pH. J Colloid Interface Sci 2008; 318:145-51. [DOI: 10.1016/j.jcis.2007.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Revised: 10/04/2007] [Accepted: 10/06/2007] [Indexed: 11/17/2022]
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Simonich MT, McQuistan T, Jubert C, Pereira C, Hendricks JD, Schimerlik M, Zhu B, Dashwood RH, Williams DE, Bailey GS. Low-dose dietary chlorophyll inhibits multi-organ carcinogenesis in the rainbow trout. Food Chem Toxicol 2007; 46:1014-24. [PMID: 18069110 DOI: 10.1016/j.fct.2007.10.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2007] [Revised: 10/09/2007] [Accepted: 10/27/2007] [Indexed: 01/30/2023]
Abstract
We recently reported that chlorophyll (Chl) strongly inhibits aflatoxin B(1) preneoplasia biomarkers in rats when administered by co-gavage (Simonich et al., 2007. Natural chlorophyll inhibits aflatoxin B1-induced multi-organ carcinogenesis in the rat. Carcinogenesis 28, 1294-1302.). The present study extends this by examining the effects of dietary Chl on tumor development, using rainbow trout to explore ubiquity of mechanism. Duplicate groups of 140 trout were fed diet containing 224 ppm dibenzo[a,l]pyrene (DBP) alone, or with 1000-6000 ppm Chl, for 4 weeks. DBP induced high tumor incidences in liver (51%) and stomach (56%), whereas Chl co-fed at 2000, 4000 or 6000 ppm reduced incidences in stomach (to 29%, 23% and 19%, resp., P<0.005) and liver (to 21%, 28% and 26%, resp., P<0.0005). Chlorophyllin (CHL) at 2000 ppm gave similar protection. Chl complexed with DBP in vitro (2Chl:DBP, K(d1)=4.44+/-0.46 microM, K(d2)=3.30+/-0.18 microM), as did CHL (K(d1)=1.38+/-0.32 microM, K(d2)=1.17+/-0.05 microM), possibly explaining their ability to inhibit DBP uptake into the liver by 61-63% (P<0.001). This is the first demonstration that dietary Chl can reduce tumorigenesis in any whole animal model, and that it may do so by a simple, species-independent mechanism.
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Affiliation(s)
- Michael T Simonich
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
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41
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Nosaka Y, Tokunaga E. Development of photoacoustic spectroscopy with a piezofilm. APPLIED OPTICS 2007; 46:4289-93. [PMID: 17579684 DOI: 10.1364/ao.46.004289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We have developed photoacoustic spectroscopy with a piezofilm. A piezofilm is a piezoelectric element made from plastic polyvinylidene fluoride having piezoelectrical effect. Photoacoustic spectra (375-675 nm) of water, dye aqueous solution, and benzene, are measured with a xenon lamp. The piezofilm is directly immersed in the liquid samples for sensitive detection of the signal. The sensitivity of the method is shown to be as high as for photothermal deflection spectroscopy. Compared with the conventional methods such as photoacoustic spectroscopy with a piezoceramic and photothermal spectroscopy with a double beam configuration, the present method is favorable from its handy and simpler experimental setup.
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Affiliation(s)
- Yugo Nosaka
- Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601 [corrected] Japan
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42
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Ferruzzi MG, Blakeslee J. Digestion, absorption, and cancer preventative activity of dietary chlorophyll derivatives. Nutr Res 2007. [DOI: 10.1016/j.nutres.2006.12.003] [Citation(s) in RCA: 295] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Scotter MJ, Castle L, Roberts D. Method development and HPLC analysis of retail foods and beverages for copper chlorophyll (E141[i]) and chlorophyllin (E141[ii]) food colouring materials. ACTA ACUST UNITED AC 2005; 22:1163-75. [PMID: 16356879 DOI: 10.1080/02652030500306885] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
An analytical method using high performance liquid chromatography with photodiode array and fluorescence detection has been developed and applied to the determination of the food colour additives copper chlorophylls and copper chlorophyllins (E141[i] and [ii]) in foods and beverages. The analytical procedures from previously reported methods have been refined to cover a range of food colour formulations and retail foods. The method was single-laboratory validated. Recoveries of the polar copper chlorophyllins from spiked samples (at 14.5 mg/kg in all but one case) were in the range 79-109%, except for jelly sweets (49%). Recoveries of relatively non-polar copper chlorophylls were in the range 77-107% (except for 'made' jelly at 50%). The %RSD for recoveries was generally below 12%. Quantitative estimates of the total copper chlorophyll/chlorophyllin content of a small range of food commodities are reported, based on the use of trisodium copper chlorophyllin as a surrogate standard. The majority of E141-containing foods and colour formulations analysed exhibited a multiplicity of components due to the various extraction and purification processes that are used to obtain these colour additives. This was confounded by the presence of overwhelming amounts of native chlorophylls in certain samples (e.g. mint sauce). Food commodities containing significant amounts of emulsifiers (i.e. ice cream), gelatine or fats were problematic during extraction hence further development of extraction regimes is desirable for such products. All of the samples analysed with added E141, had estimated total copper chlorophyllin contents of below 15 mg/kg (range 0.7-13.0).
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Affiliation(s)
- Michael J Scotter
- Central Science Laboratory, Department for Environment, Food and Rural Affairs, Keelung, York, UK.
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Ferruzzi MG, Schwartz SJ. Thermal degradation of commercial grade sodium copper chlorophyllin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:7098-102. [PMID: 16131116 DOI: 10.1021/jf051010s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Sodium copper chlorophyllin (SCC), a water-soluble commercial derivative of chlorophyll, has gained importance as a food colorant and dietary supplement with apparent chemopreventive activities. The thermal stability of SCC was studied to assess the potential application of this chlorophyll derivative for use in thermally processed foods and supplements. Thermal degradation of an aqueous 500 ppm SCC solution was monitored between 25 and 100 degrees C by a loss of absorbance at 627 nm. Decomposition was also followed by reversed phase C18 HPLC with photodiode array detection to monitor the loss of Cu(II)Chlorin e4, the major component of commercial grade SCC. The rate of thermal degradation of SCC was found to follow first-order reaction kinetics. HPLC analysis confirmed the ultraviolet and visible absorbance data and also demonstrated loss of the major SCC component, Cu(II)Chlorin e4, at a rate faster than that of overall SCC. The activation energy was estimated using the Arrhenius equation and found to be 13.3 +/- 0.8 and 16.0 +/- 2.1 kcal/mol for the thermal degradation of SCC and Cu(II)Chlorin e4, respectively. The observed temperature sensitivity of SCC was determined to be similar to that of natural chlorophyll and raises the possibility of color deterioration when used in food products where mild to severe thermal treatment is applied. Furthermore, the implication of rapid loss of Cu(II)Chlorin e4, a reported bioactive component of SCC, upon heating may result in alteration of potential dietary benefits such as antimutagenic and antioxidant activity.
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Affiliation(s)
- Mario G Ferruzzi
- Department of Food Science, Purdue University, West Lafayette, Indiana 47907-2009, USA.
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Mata JE, Yu Z, Gray JE, Williams DE, Rodriguez-Proteau R. Effects of chlorophyllin on transport of dibenzo(a, l)pyrene, 2-amino-1-methyl-6-phenylimidazo-[4,5-b]pyridine, and aflatoxin B1 across Caco-2 cell monolayers. Toxicology 2004; 196:117-25. [PMID: 15036761 DOI: 10.1016/j.tox.2003.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 10/30/2003] [Accepted: 11/18/2003] [Indexed: 01/28/2023]
Abstract
Chlorophyllin (CHL) is a sodium copper derivative of chlorophyll that is capable of forming strong non-covalent complexes with several known carcinogens. Antimutagenic and anticarcinogenic effects, including reduced DNA adduct and tumor formation have been demonstrated for CHL against aflatoxin B(1) (AFB(1)), dibenzo(a,l)pyrene (DBP) and 2-amino-1-methyl-6-phenylimidazo-[4,5-b]pyridine (PhIP). Alterations in uptake and/or metabolism of planar molecules with at least partial ring structure have been proposed as mechanisms of action for CHL chemoprevention. The Caco-2 cell model of intestinal epithelial transport was used to evaluate the absorption of 1 microM DBP, AFB(1) and PhIP across cell monolayers in the presence of 0, 1, 10, and 100 microM CHL. No significant differences were observed in the permeability (P(e)) of DBP and AFB(1) from the basolateral-to-apical (BL --> AP) compared to apical-to-basolateral (AP --> BL) compartments for DBP and AFB(1), however, the P(e) of PhIP from BL --> AP, 1.26 x 10(5) +/- 2.10 x 10(6) cm/s, was significantly higher than AP --> BL, 5.83 x 10(6) +/- 7.56 x 10(7) cm/s, (P<0.001) suggesting an active efflux pathway. Transport of DBP from AP --> BL compartments was significantly reduced at all CHL concentrations (P<0.05). AP --> BL transport of AFB(1) was significantly reduced by the addition of 100 microM CHL (P<0.05) while 1 microM or 10 microM CHL had no effect. Complexation studies revealed a higher binding affinity (K(b)) for DBP to CHL compared to AFB(1) to CHL in transport buffer. AP --> BL transport of PhIP, which has a lower binding affinity for CHL than AFB(1) or DBP, was not significantly altered by the addition of CHL. These data suggest that the transport of AFB(1) and DBP can be inhibited by CHL, which supports a model of direct binding in the intestinal tract of CHL to these carcinogens with resultant reduction of bioavailability as one mechanism of action as a cancer chemopreventive agent.
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Affiliation(s)
- John E Mata
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR 97331, USA.
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46
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Sudakin DL. Dietary aflatoxin exposure and chemoprevention of cancer: a clinical review. JOURNAL OF TOXICOLOGY. CLINICAL TOXICOLOGY 2003; 41:195-204. [PMID: 12733859 DOI: 10.1081/clt-120019137] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Exposure to dietary aflatoxins is considered to be an important risk factor for the development of hepatocellular carcinoma in certain regions of the world. Significant advances have recently been made in understanding the clinical toxicology of aflatoxins. These include the development and validation of biomarkers of exposure and genotoxic effect. These biomarkers are currently being utilized to explore the potential that pharmaceutical interventions may have in modifying the toxicokinetics of dietary aflatoxin exposure. Preliminary results of clinical trials with the drug oltipraz suggest that it may modify the genotoxic effects of aflatoxin B1 by inhibiting bioactivation pathways and stimulating detoxification pathways. More recent results of a clinical trial with chlorophyllin suggest that this drug may have a role in preventing dietary exposure to aflatoxin B1 by reducing its oral bioavailability. The preliminary results of these chemoprevention studies may ultimately have implications for cancer prevention in high-risk populations in the future.
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Affiliation(s)
- Daniel L Sudakin
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331-6502, USA.
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