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Roca M, Pérez-Gálvez A. Application of EFSA EU menu database and R computing language to calculate the green chlorophyll intake in the European population. Food Chem 2024; 461:140912. [PMID: 39181052 DOI: 10.1016/j.foodchem.2024.140912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 08/08/2024] [Accepted: 08/16/2024] [Indexed: 08/27/2024]
Abstract
The growing evidence of the health benefits of chlorophyll pigments and the claims that could arise from industry and academia require data on their common dietary intakes. This study presents data on the chronic intake of green chlorophyll in 23 European countries using standardised methodologies to manage food consumption data within the EU Menu methodology. A mean intake of 207.12 mg of green chlorophylls/(d × person) for the adult population was calculated, considering significant covariates. The hierarchical cluster and partial least squares discriminant analysis (PLS-DA) techniques were applied to analyse intake disparities by region and age groups, identifying common food sources of green chlorophylls, such as olive oil, kale, and spinach. This paper presents a modern mathematical approach for obtaining novel information from existing databases of food composition data. Future challenges include building a comprehensive chlorophyll composition database for foods and extending the estimation to non-green chlorophyll pigments and metallo-chlorophyll food colourants.
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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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2
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Xing JJ, Cheng LL, Feng S, Guo XN, Zhu KX. Humidity-controlled heat treatment of fresh spinach noodles for color preservation and storage quality improvement. Food Chem X 2023; 20:101042. [PMID: 38144827 PMCID: PMC10740017 DOI: 10.1016/j.fochx.2023.101042] [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: 08/21/2023] [Revised: 11/17/2023] [Accepted: 11/29/2023] [Indexed: 12/26/2023] Open
Abstract
The high sensitivity to color browning during room-temperature storage was a significant factor in limiting the development of fresh spinach noodles (FSN). The practice of humidity-controlled heat treatment (HCHT) at varying temperatures, relative humidity, and time was carried out to limit enzyme activity and improve the quality of FSN. Results showed that HCHT could maximize the color preservation of fresh spinach noodle quality while effectively inactivating polyphenol oxidase and the yeasts, and mold count in FSN during storage was almost undetectable after mild conditions (80 °C). The hardness and chewiness of HCHT noodles were significantly increased, but the free sulfhydryl content was reduced. At 80 °C, 90 %, 5 min, protein structural aggregation was found in the microstructure of HCHT fresh spinach noodles. HCHT also caused partial gelatinization, as evidenced by the decrease in starch gelatinization enthalpy from 5.49 to 4.77 J/g, although the gelatinization degree of FSN was comparatively low.
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Affiliation(s)
- Jun-jie Xing
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, PR China
| | - Ling-ling Cheng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, PR China
| | - Shuai Feng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, PR China
| | - Xiao-na Guo
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, PR China
| | - Ke-xue Zhu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, PR China
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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: 12] [Impact Index Per Article: 12.0] [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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Rivenbark KJ, Wang M, Lilly K, Tamamis P, Phillips TD. Development and characterization of chlorophyll-amended montmorillonite clays for the adsorption and detoxification of benzene. WATER RESEARCH 2022; 221:118788. [PMID: 35777320 PMCID: PMC9662585 DOI: 10.1016/j.watres.2022.118788] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
After disasters, such as forest fires and oil spills, high levels of benzene (> 1 ppm) can be detected in the water, soil, and air surrounding the disaster site, which poses a significant health risk to human, animal, and plant populations in the area. While remediation methods with activated carbons have been employed, these strategies are limited in their effectiveness due to benzene's inherent stability and limited retention to most surfaces. To address this problem, calcium and sodium montmorillonite clays were amended with a mixture of chlorophyll (a) and (b); their binding profile and ability to detoxify benzene were characterized using in vitro, in silico, and well-established ecotoxicological (ecotox) bioassay methods. The results of in vitro isothermal analyses indicated that chlorophyll-amended clays showed an improved binding profile in terms of an increased binding affinity (Kf = 668 vs 67), increased binding percentage (52% vs 11%), and decreased rates of desorption (28% vs 100%), compared to the parent clay. In silico simulation studies elucidated the adsorption mechanism and validated that the addition of the chlorophyll to the clays increased the adsorption of benzene through Van der Waals forces (i.e., aromatic π-π stacking and alkyl-π interactions). The sorbents were also assessed for their safety and ability to protect sensitive ecotox organisms (Lemna minor and Caenorhabditis elegans) from the toxicity of benzene. The inclusion of chlorophyll-amended clays in the culture medium significantly reduced benzene toxicity to both organisms, protecting C. elegans by 98-100% from benzene-induced mortality and enhancing the growth rates of L. minor. Isothermal analyses, in silico modeling, and independent bioassays all validated our proof of concept that benzene can be sequestered, tightly bound, and stabilized by chlorophyll-amended montmorillonite clays. These novel sorbents can be utilized during disasters and emergencies to decrease unintentional exposures from contaminated water, soil, and air.
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Affiliation(s)
- Kelly J Rivenbark
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Meichen Wang
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Kendall Lilly
- Department of Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Phanourios Tamamis
- Department of Materials Science and Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA; Artie McFerrin Department of Chemical Engineering, College of Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Timothy D Phillips
- Interdisciplinary Faculty of Toxicology, Department of Veterinary Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.
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Vázquez-Durán A, Téllez-Isaías G, Hernández-Rodríguez M, Ruvalcaba RM, Martínez J, Nicolás-Vázquez MI, Aceves-Hernández JM, Méndez-Albores A. The Ability of Chlorophyll to Trap Carcinogen Aflatoxin B 1: A Theoretical Approach. Int J Mol Sci 2022; 23:6068. [PMID: 35682746 PMCID: PMC9181093 DOI: 10.3390/ijms23116068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/19/2022] [Accepted: 05/26/2022] [Indexed: 01/27/2023] Open
Abstract
The coordination of one and two aflatoxin B1 (AFB1, a potent carcinogen) molecules with chlorophyll a (chl a) was studied at a theoretical level. Calculations were performed using the M06-2X method in conjunction with the 6-311G(d,p) basis set, in both gas and water phases. The molecular electrostatic potential map shows the chemical activity of various sites of the AFB1 and chl a molecules. The energy difference between molecular orbitals of AFB1 and chl a allowed for the establishment of an intermolecular interaction. A charge transfer from AFB1 to the central cation of chl a was shown. The energies of the optimized structures for chl a show two configurations, unfolded and folded, with a difference of 15.41 kcal/mol. Chl a appeared axially coordinated to the plane (α-down or β-up) of the porphyrin moiety, either with the oxygen atom of the ketonic group, or with the oxygen atom of the lactone moiety of AFB1. The complexes of maximum stability were chl a 1-α-E-AFB1 and chl a 2-β-E-AFB1, at -36.4 and -39.2 kcal/mol, respectively. Additionally, with two AFB1 molecules were chl a 1-D-2AFB1 and chl a 2-E-2AFB1, at -60.0 and -64.8 kcal/mol, respectively. Finally, biosorbents containing chlorophyll could improve AFB1 adsorption.
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Affiliation(s)
- Alma Vázquez-Durán
- Unidad de Investigación Multidisciplinaria L14 (Alimentos, Micotoxinas, y Micotoxicosis), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de Mexico 54714, Mexico; (A.V.-D.); (J.M.A.-H.); (A.M.-A.)
| | | | - Maricarmen Hernández-Rodríguez
- Laboratorio de Cultivo Celular, Sección de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de Mexico 11340, Mexico;
| | - René Miranda Ruvalcaba
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán Campo 1, Universidad Nacional Autónoma de México, Avenida 1o de Mayo s/n, Colonia Santa María las Torres, Cuautitlán Izcalli, Estado de Mexico 54740, Mexico;
| | - Joel Martínez
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosi 78210, Mexico
| | - María Inés Nicolás-Vázquez
- Departamento de Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán Campo 1, Universidad Nacional Autónoma de México, Avenida 1o de Mayo s/n, Colonia Santa María las Torres, Cuautitlán Izcalli, Estado de Mexico 54740, Mexico;
| | - Juan Manuel Aceves-Hernández
- Unidad de Investigación Multidisciplinaria L14 (Alimentos, Micotoxinas, y Micotoxicosis), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de Mexico 54714, Mexico; (A.V.-D.); (J.M.A.-H.); (A.M.-A.)
| | - Abraham Méndez-Albores
- Unidad de Investigación Multidisciplinaria L14 (Alimentos, Micotoxinas, y Micotoxicosis), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, Estado de Mexico 54714, Mexico; (A.V.-D.); (J.M.A.-H.); (A.M.-A.)
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Vázquez-Durán A, Nava-Ramírez MDJ, Hernández-Patlán D, Solís-Cruz B, Hernández-Gómez V, Téllez-Isaías G, Méndez-Albores A. Potential of Kale and Lettuce Residues as Natural Adsorbents of the Carcinogen Aflatoxin B 1 in a Dynamic Gastrointestinal Tract-Simulated Model. Toxins (Basel) 2021; 13:771. [PMID: 34822555 PMCID: PMC8617829 DOI: 10.3390/toxins13110771] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/26/2021] [Accepted: 10/29/2021] [Indexed: 11/17/2022] Open
Abstract
Adsorption of the carcinogen aflatoxin B1 (AFB1) onto agro-waste-based materials is a promising alternative over conventional inorganic binders. In the current study, two unmodified adsorbents were eco-friendly prepared from kale and lettuce agro-wastes. A dynamic gastrointestinal tract-simulated model was utilized to evaluate the removal efficiency of the sorptive materials (0.5%, w/w) when added to an AFB1-contaminated diet (100 µg AFB1/kg). Different characterization methodologies were employed to understand the interaction mechanisms between the AFB1 molecule and the biosorbents. Based on adsorption results, the biosorbent prepared from kale was the best; its maximum adsorption capacity was 93.6%, which was significantly higher than that of the lettuce biosorbent (83.7%). Characterization results indicate that different mechanisms may act simultaneously during adsorption. Non-electrostatic (hydrophobic interactions, dipole-dipole interactions, and hydrogen bonding) and electrostatic interactions (ionic attractions) together with the formation of AFB1-chlorophyll complexes appear to be the major influencing factors driving AFB1 biosorption.
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Affiliation(s)
- Alma Vázquez-Durán
- Unidad de Investigación Multidisciplinaria (UIM) L14 (Alimentos, Micotoxinas, y Micotoxicosis), Facultad de Estudios Superiores Cuautitlán (FES-C), Universidad Nacional Autónoma de México (UNAM), Mexico City 54714, Mexico; (A.V.-D.); (M.d.J.N.-R.)
| | - María de Jesús Nava-Ramírez
- Unidad de Investigación Multidisciplinaria (UIM) L14 (Alimentos, Micotoxinas, y Micotoxicosis), Facultad de Estudios Superiores Cuautitlán (FES-C), Universidad Nacional Autónoma de México (UNAM), Mexico City 54714, Mexico; (A.V.-D.); (M.d.J.N.-R.)
| | | | - Bruno Solís-Cruz
- UIM L5 (LEDEFAR), FES-C, UNAM, Mexico City 54714, Mexico; (D.H.-P.); (B.S.-C.)
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Dashwood RH. Cancer interception by interceptor molecules: mechanistic, preclinical and human translational studies with chlorophylls. Genes Environ 2021; 43:8. [PMID: 33676582 PMCID: PMC7937315 DOI: 10.1186/s41021-021-00180-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 02/18/2021] [Indexed: 01/14/2023] Open
Abstract
Before 'cancer interception' was first advocated, 'interceptor molecules' had been conceived as a sub-category of preventive agents that interfered with the earliest initiation steps in carcinogenesis. Three decades ago, a seminal review cataloged over fifty synthetic agents and natural products that were known or putative interceptor molecules. Chlorophylls and their derivatives garnered much interest based on the potent antimutagenic activity in the Salmonella assay, and the subsequent mechanistic work that provided proof-of-concept for direct molecular complexes with planar aromatic carcinogens. As the 'interceptor molecule' hypothesis evolved, mechanistic experiments and preclinical studies supported the view that chlorophylls can interact with environmental heterocyclic amines, aflatoxins, and polycyclic aromatic hydrocarbons to limit their uptake and bioavailability in vivo. Support also came from human translational studies involving ultralow dose detection in healthy volunteers, as well as intervention in at-risk subjects. Antimutagenic and antigenotoxic effects of natural and synthetic chlorophylls against small alkylating agents also highlighted the fact that non-interceptor mechanisms existed. This gave impetus to investigations broadly related to free radical scavenging, anti-inflammatory effects, immune modulation and photodynamic therapy. Therapeutic aspects of chlorophylls also were investigated, with evidence for cell cycle arrest and apoptosis in human cancer cells. As the science has evolved, new mechanistic leads continue to support the use and development of chlorophylls and their porphyrin derivatives for cancer interception, beyond the initial interest as interceptor molecules.
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Affiliation(s)
- Roderick H Dashwood
- Center for Epigenetics & Disease Prevention, Texas A&M Health, 2121 West Holcombe Blvd, Houston, TX, 77030, USA.
- Department of Translational Medical Sciences, Texas A&M College of Medicine, Houston, TX, USA.
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Pan D, Gong X, Wang X, Li M. Role of Active Components of Medicinal Food in the Regulation of Angiogenesis. Front Pharmacol 2021; 11:594050. [PMID: 33716724 PMCID: PMC7944143 DOI: 10.3389/fphar.2020.594050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 11/10/2020] [Indexed: 11/16/2022] Open
Abstract
Angiogenesis refers to the formation of new blood vessels from the endothelial cells of existing arteries, veins, and capillaries. Angiogenesis is involved in a variety of physiological and pathological processes, such as the formation of malignant and development of atherosclerosis and other diseases. In recent years, many studies have shown that the active components of food have a certain regulatory effect on angiogenesis and negligible clinical limitations. With the increasing attention being paid to medicine and food homology, exploring the effect of active food components on angiogenesis is of great significance. In this review, we discuss the source, composition, pharmacological activity, and mechanism of action of certain active components of medicinal foods in detail. These could help prevent angiogenesis-related complications or provide a basis for healthier dietary habits. This review can provide a theoretical basis for the research and development of highly efficient anti-angiogenic drugs with low toxicity.
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Affiliation(s)
- Dezhi Pan
- Department of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Xue Gong
- Department of Pharmacy, Baotou Medical College, Baotou, China
| | - Xiaoqin Wang
- Department of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Minhui Li
- Department of Pharmacy, Inner Mongolia Medical University, Hohhot, China
- Department of Pharmacy, Baotou Medical College, Baotou, China
- Pharmaceutical Laboratory, Inner Mongolia Institute of Traditional Chinese Medicine, Hohhot, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
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Fernandes AS, Nascimento TC, Pinheiro PN, de Rosso VV, de Menezes CR, Jacob-Lopes E, Zepka LQ. Insights on the intestinal absorption of chlorophyll series from microalgae. Food Res Int 2020; 140:110031. [PMID: 33648259 DOI: 10.1016/j.foodres.2020.110031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/10/2020] [Accepted: 12/13/2020] [Indexed: 12/22/2022]
Abstract
The bioaccessibility and subsequent uptake by Caco-2 human intestinal cells of chlorophyll pigments from Scenedesmus obliquus were determined for the first time. In order to evaluate the impact of different types of the matrix on bioaccessibility of chlorophyll from microalgae, three different products were evaluated: isolated chlorophyll extract (ICE); wet ultrasonicated biomass (WUB); and whole dried biomass (WDB). The samples were submitted to in vitro digestion model according to the INFOGEST protocol, and Caco-2 cells determined the intestinal uptake. Chlorophyll pigments were determined by HPLC-PDA-MS/MS. A total of ten chlorophyll pigments (8,318.48 µg g-1) were separated in S. obliquus biomass, with chlorophyll a (3,507.76 µg g-1) and pheophytin a' (1,598.09 µg g-1) the major ones. After in vitro digestion, all tested products showed bioaccessible chlorophylls. However, the total bioaccessibility results were as follows: ICE (33.45%), WUB (2.65%), WDB (0.33%). Five compounds were bioaccessible in ICE, three in WUB, and one in WDB. The hydroxypheophytin a showed the highest bioaccessibility (212%) in ICE, while pheophytin a' in WUB (11%) and WDB (2%). As a result, bioavailability estimates of ICE using the Caco-2 cell showed hydroxypheophytin a (102.53%), followed by pheophytin a' (64.69%) as the chlorophyll pigments most abundant in intestinal cells. In summary, from a nutritional perspective, these three types of the matrix (WDB, WUB, and ICE) influence the promotion of chlorophyll bioaccessibility. In this way, the data suggest that chlorophylls bioaccessibility from ICE is greater than that in WDB and WUB. Therefore, ICE should be considered a product that provides bioavailable chlorophyll and could be the best choice, such as ingredients in the development of functional foods chlorophyll-based.
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Affiliation(s)
- Andrêssa S Fernandes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Tatiele C Nascimento
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Pricila N Pinheiro
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Veridiana V de Rosso
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Rua Silva Jardim 136, Santos 11015-020, Brazil
| | - Cristiano R de Menezes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Eduardo Jacob-Lopes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Leila Q Zepka
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil.
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Cabrera‐Guzmán E, Díaz‐Paniagua C, Gomez‐Mestre I. Differential effect of natural and pigment‐supplemented diets on larval development and phenotype of anurans. J Zool (1987) 2020. [DOI: 10.1111/jzo.12827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E. Cabrera‐Guzmán
- Ecology Evolution and Development Group Department of Wetland Ecology Estación Biológica de Doñana CSIC Seville Spain
- Department of Integrative Biology Oklahoma State University Stillwater OK USA
| | - C. Díaz‐Paniagua
- Ecology Evolution and Development Group Department of Wetland Ecology Estación Biológica de Doñana CSIC Seville Spain
| | - I. Gomez‐Mestre
- Ecology Evolution and Development Group Department of Wetland Ecology Estación Biológica de Doñana CSIC Seville Spain
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11
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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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12
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Benkerroum N. Retrospective and Prospective Look at Aflatoxin Research and Development from a Practical Standpoint. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E3633. [PMID: 31569703 PMCID: PMC6801849 DOI: 10.3390/ijerph16193633] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 09/24/2019] [Accepted: 09/26/2019] [Indexed: 12/19/2022]
Abstract
Among the array of structurally and toxicologically diverse mycotoxins, aflatoxins have attracted the most interest of scientific research due to their high toxicity and incidence in foods and feeds. Despite the undeniable progress made in various aspects related to aflatoxins, the ultimate goal consisting of reducing the associated public health risks worldwide is far from being reached due to multiplicity of social, political, economic, geographic, climatic, and development factors. However, a reasonable degree of health protection is attained in industrialized countries owing to their scientific, administrative, and financial capacities allowing them to use high-tech agricultural management systems. Less fortunate situations exist in equatorial and sub-equatorial developing countries mainly practicing traditional agriculture managed by smallholders for subsistence, and where the climate is suitable for mould growth and aflatoxin production. This situation worsens due to climatic change producing conditions increasingly suitable for aflatoxigenic mould growth and toxin production. Accordingly, it is difficult to harmonize the regulatory standards of aflatoxins worldwide, which prevents agri-foods of developing countries from accessing the markets of industrialized countries. To tackle the multi-faceted aflatoxin problem, actions should be taken collectively by the international community involving scientific research, technological and social development, environment protection, awareness promotion, etc. International cooperation should foster technology transfer and exchange of pertinent technical information. This review presents the main historical discoveries leading to our present knowledge on aflatoxins and the challenges that should be addressed presently and in the future at various levels to ensure higher health protection for everybody. In short, it aims to elucidate where we come from and where we should go in terms of aflatoxin research/development.
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Affiliation(s)
- Noreddine Benkerroum
- Department of Food Science and Agricultural Chemistry, Macdonald-Stewart Building, McGill University, Macdonald Campus, 21,111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada.
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Abdel-Latif MS, Elmeleigy KM, Aly TAA, Khattab MS, Mohamed SM. Pathological and biochemical evaluation of coumarin and chlorophyllin against aflatoxicosis in rat. ACTA ACUST UNITED AC 2017; 69:285-291. [PMID: 28190563 DOI: 10.1016/j.etp.2017.01.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
Abstract
Aflatoxin contamination of animal diet has adverse effects on animal health and productivity. This study was performed to investigate the effect of using coumarin and/or chlorophyllin in rat diet against aflatoxicosis. Fifty-four rats were assigned into 7 groups (6 rats each). G1 was a negative control. G2 received water with coumarin 0.5%. G3 received water with chlorophyllin 0.5%. G4 received water with coumarin 0.5% and chlorophyllin 0.5%. G5-8 fed aflatoxin B1 1000ppb in diet. Group 6-8 were administered similar treatments as G2-4. The experiment ended after 8 weeks. Random glucose, total lipid, total cholesterol, total triglycerides, total protein, serum ALT, AST, creatinine, and urea were measured. Histopathology of liver, kidney and pancreas and immunohistochemical staining of placental glutathione-S-transferase (GST-P) in liver were performed. The glucose serum level, cholesterol, AST, and ALT were elevated in G5 compared to G6-8. The liver and kidney lesions in G5 included vacuolation and necrosis which subsided in G6-8. The necrosis and inflammatory cells infiltration in the pancreas of G5 were absent in G6-8. GST-P positive hepatocytes were abundant in G5, few in G6 and absent in G7 and G8. In conclusion, the chlorophyllin and coumarin possessed protective and anti-carcinogenic effect against aflatoxicosis in rats.
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Affiliation(s)
| | - Khaled M Elmeleigy
- Regional Center For Food and Feed, Agriculture Research Center, Ministry of Agriculture, Giza, Egypt
| | - Tahany A A Aly
- Regional Center For Food and Feed, Agriculture Research Center, Ministry of Agriculture, Giza, Egypt
| | - Marwa S Khattab
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza Square, Giza, 12211, Egypt.
| | - Sara M Mohamed
- Regional Center For Food and Feed, Agriculture Research Center, Ministry of Agriculture, Giza, Egypt
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Liu JD, Goodspeed D, Sheng Z, Li B, Yang Y, Kliebenstein DJ, Braam J. Keeping the rhythm: light/dark cycles during postharvest storage preserve the tissue integrity and nutritional content of leafy plants. BMC PLANT BIOLOGY 2015; 15:92. [PMID: 25879637 PMCID: PMC4396971 DOI: 10.1186/s12870-015-0474-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/16/2015] [Indexed: 05/05/2023]
Abstract
BACKGROUND The modular body structure of plants enables detached plant organs, such as postharvest fruits and vegetables, to maintain active responsiveness to environmental stimuli, including daily cycles of light and darkness. Twenty-four hour light/darkness cycles entrain plant circadian clock rhythms, which provide advantage to plants. Here, we tested whether green leafy vegetables gain longevity advantage by being stored under light/dark cycles designed to maintain biological rhythms. RESULTS Light/dark cycles during postharvest storage improved several aspects of plant tissue performance comparable to that provided by refrigeration. Tissue integrity, green coloration, and chlorophyll content were generally enhanced by cycling of light and darkness compared to constant light or darkness during storage. In addition, the levels of the phytonutrient glucosinolates in kale and cabbage remained at higher levels over time when the leaf tissue was stored under light/dark cycles. CONCLUSIONS Maintenance of the daily cycling of light and dark periods during postharvest storage may slow the decline of plant tissues, such as green leafy vegetables, improving not only appearance but also the health value of the crops through the maintenance of chlorophyll and phytochemical content after harvest.
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Affiliation(s)
- John D Liu
- Department of BioSciences, Rice University, Houston, TX, 77005, USA.
| | - Danielle Goodspeed
- Department of BioSciences, Rice University, Houston, TX, 77005, USA.
- Current Address: Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Zhengji Sheng
- Department of BioSciences, Rice University, Houston, TX, 77005, USA.
| | - Baohua Li
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
| | - Yiran Yang
- Department of BioSciences, Rice University, Houston, TX, 77005, USA.
| | - Daniel J Kliebenstein
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
- DynaMo Centre of Excellence, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.
| | - Janet Braam
- Department of BioSciences, Rice University, Houston, TX, 77005, USA.
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15
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Nagini S, Palitti F, Natarajan AT. Chemopreventive potential of chlorophyllin: a review of the mechanisms of action and molecular targets. Nutr Cancer 2015; 67:203-11. [PMID: 25650669 DOI: 10.1080/01635581.2015.990573] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Chlorophyllin (CHL), a water soluble semisynthetic derivative of the ubiquitous plant pigment chlorophyll used as a food additive, is recognized to confer a wide range of health benefits. CHL has been shown to exhibit potent antigenotoxic, anti-oxidant, and anticancer effects. Numerous experimental and epidemiological studies have demonstrated that dietary supple-mentation of CHL lowers the risk of cancer. CHL inhibits cancer initiation and progression by targeting multiple molecules and pathways involved in the metabolism of carcinogens, cell cycle progression, apoptosis evasion, invasion, and angiogenesis. The modulatory effects of CHL on the hallmark capabilities of cancer appear to be mediated via abrogation of key oncogenic signal transduction pathways such as nuclear factor kappa B, Wnt/β-catenin, and phosphatidylinositol-3-kinase/Akt signaling. This review provides insights into the molecular mechanisms of the anticancer effects of dietary CHL.
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Affiliation(s)
- Siddavaram Nagini
- a Department of Biochemistry and Biotechnology, Faculty of Science , Annamalai University , Tamil Nadu , India
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16
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Heterocyclic Aromatic Amines Heterocomplexation with Biologically Active Aromatic Compounds and Its Possible Role in Chemoprevention. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/740821] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Food-borne heterocyclic aromatic amines (HCAs) are known mutagens and carcinogens present especially in Western population diet, which contains large amount of meat and its products. HCAs are capable of interacting with DNA directly through the formation of covalent adducts, however this process requires biological activation in liver, mainly by cytochrome P450 enzymes. This process may produce mutations and in consequence may contribute to the development of cancer. However, there are many studies showing that several biologically active aromatic compounds (BACs) may protect against genotoxic effects of HCAs. Direct interactions and noncovalent heterocomplexes formation may be one of the most important mechanisms of such protection. This work describes several BACs present in human diet, which are capable of molecular complexes formation with HCAs and protect cells as well as whole organisms against HCAs action.
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Saha SK, Hayes J, Moane S, Murray P. Tagging of biomolecules with deuterated water (D2O) in commercially important microalgae. Biotechnol Lett 2013; 35:1067-72. [PMID: 23479414 DOI: 10.1007/s10529-013-1176-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 02/26/2013] [Indexed: 11/30/2022]
Abstract
To understand the effect of any biomolecules in specific metabolic pathways in humans, bioavailability and for other basic understanding, stable isotopically-labelled biomolecules (preferably deuterated) is the fundamental pre-requisite. Production of deuterated biomolecules such as, astaxanthin, β-carotene, lutein, chlorophyll-a, and eicosapentaenoic acid (EPA, 20:5n-3) by metabolic tagging have been shown in commercially important microalgae, Haematococcus pluvialis and Phaeodactylum tricornutum. These microalgae were grown in appropriate optimized medium supplemented with 25% (v/v) deuterated water. LC-MS analysis showed a maximum of 20, 25, 23, 24, and 27% replacement of hydrogen by deuterium atoms respectively in astaxanthin, β-carotene, lutein, chlorophyll-a, and EPA. To our knowledge, this is the first report on the production of deuterated astaxanthin, chlorophyll-a and EPA by these microalgae.
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Affiliation(s)
- Sushanta Kumar Saha
- Shannon Applied Biotechnology Centre, Limerick Institute of Technology, Moylish Park, Limerick, Ireland.
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18
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Keszei AP, Goldbohm RA, Schouten LJ, Jakszyn P, van den Brandt PA. Dietary N-nitroso compounds, endogenous nitrosation, and the risk of esophageal and gastric cancer subtypes in the Netherlands Cohort Study. Am J Clin Nutr 2013; 97:135-46. [PMID: 23193003 DOI: 10.3945/ajcn.112.043885] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Dietary N-nitroso compounds and endogenous nitrosation are important carcinogenic factors, but human evidence of their role is scarce for esophageal cancer and inconsistent for gastric cancer. OBJECTIVE We studied the relation between risks of esophageal and gastric cancer subtypes and dietary intake of N-nitrosodimethylamine, heme iron, nitrite, and nitrate in the Netherlands Cohort Study. DESIGN A total of 120,852 men and women aged 55-69 y were recruited in 1986, and diet, based on a 150-item food-frequency questionnaire, and other risk factors were assessed. The cohort was followed for 16.3 y, and 110 esophageal squamous cell carcinoma (ESCC), 151 esophageal adenocarcinoma, 166 gastric cardia adenocarcinoma, and 497 gastric noncardia adenocarcinoma (GNCA) cases were analyzed along with 4032 subcohort members in a case-cohort analysis. RESULTS Positive associations were observed between N-nitrosodimethylamine intake and ESCC risk (HR for 0.1-μg/d increase in intake: 1.15; 95% CI: 1.05, 1.25; P-trend = 0.01 based on tertiles of intake) and GNCA risk (1.06; 95% CI: 1.01, 1.10; P-trend = 0.09) in men. ESCC risk was associated with nitrite intake (HR for 0.1-mg/d increase: 1.19; 95% CI: 1.05, 1.36; P-trend = 0.06) and heme-iron intake (HR for 1-mg/d increase: 1.83; 95% CI: 0.98, 3.39; P-trend = 0.03). Among women, exposure levels were lower, and we found no convincing positive associations. CONCLUSION These results suggest that N-nitroso compounds may influence the risk of ESCC in men, but there are no clear associations for other esophageal and gastric subtypes.
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Affiliation(s)
- András P Keszei
- School for Oncology and Developmental Biology, Department of Epidemiology, Maastricht University, Maastricht, Netherlands.
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19
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Nagini S, Siddavaram N, Vidya Priyadarsini R, Ramamurthi VP, Veeravarmal V, Veeran V, Mishra R. Chlorophyllin abrogates canonical Wnt/β-catenin signaling and angiogenesis to inhibit the development of DMBA-induced hamster cheek pouch carcinomas. Cell Oncol (Dordr) 2012; 35:385-95. [PMID: 22983718 DOI: 10.1007/s13402-012-0099-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2012] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Chlorophyllin, a water soluble semi-synthetic food-grade derivative is reported to exhibit a wide range of beneficial health effects. We investigated the effect of chlorophyllin supplementation on Wnt/β-catenin and vascular endothelial growth factor (VEGF) signaling in the 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch (HBP) carcinogenesis model. METHODS AND RESULTS Hamsters were divided into 4 groups. The right buccal pouches of group 1 and 2 hamsters were painted with 0.5 % DMBA for 14 weeks. Group 2 animals received in addition chlorophyllin (4 mg/kg bw) in the diet. Group 3 animals received chlorophyllin alone and group 4 animals served as control. mRNA and protein expression of components of Wnt, VEGF, and PI3K/Akt signaling pathways were analyzed by RT-PCR and Western blot analysis. Dietary chlorophyllin administration suppressed the development of HBP carcinomas by altering the expression of several components of the Wnt/β-catenin signaling pathway. This was associated with inhibition of angiogenesis as evidenced by decreased expression of the proangiogenic factors HIF-1α, VEGF, and VEGFR2. Chlorophyllin administration also downregulated the expression of histone deacetylases involved in epigenetic regulation of tumor angiogenesis. CONCLUSION Dietary chlorophyllin that abrogates Wnt/β-catenin and VEGF signaling by targeting a multitude of key signaling molecules is an attractive candidate for preventing tumor progression.
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Affiliation(s)
- Siddavaram Nagini
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608 002, Tamil Nadu, India.
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20
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21
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Gene expression signature of DMBA-induced hamster buccal pouch carcinomas: modulation by chlorophyllin and ellagic acid. PLoS One 2012; 7:e34628. [PMID: 22485181 PMCID: PMC3317635 DOI: 10.1371/journal.pone.0034628] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 03/02/2012] [Indexed: 11/19/2022] Open
Abstract
Chlorophyllin (CHL), a water-soluble, semi-synthetic derivative of chlorophyll and ellagic acid (EA), a naturally occurring polyphenolic compound in berries, grapes, and nuts have been reported to exert anticancer effects in various human cancer cell lines and in animal tumour models. The present study was undertaken to examine the mechanism underlying chemoprevention and changes in gene expression pattern induced by dietary supplementation of chlorophyllin and ellagic acid in the 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch (HBP) carcinogenesis model by whole genome profiling using pangenomic microarrays. In hamsters painted with DMBA, the expression of 1,700 genes was found to be altered significantly relative to control. Dietary supplementation of chlorophyllin and ellagic acid modulated the expression profiles of 104 and 37 genes respectively. Microarray analysis also revealed changes in the expression of TGFβ receptors, NF-κB, cyclin D1, and matrix metalloproteinases (MMPs) that may play a crucial role in the transformation of the normal buccal pouch to a malignant phenotype. This gene expression signature was altered on treatment with chlorophyllin and ellagic acid. Our study has also revealed patterns of gene expression signature specific for chlorophyllin and ellagic acid exposure. Thus dietary chlorophyllin and ellagic acid that can reverse gene expression signature associated with carcinogenesis are novel candidates for cancer prevention and therapy.
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22
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McQuistan TJ, Simonich MT, Pratt MM, Pereira CB, Hendricks JD, Dashwood RH, Williams DE, Bailey GS. Cancer chemoprevention by dietary chlorophylls: a 12,000-animal dose-dose matrix biomarker and tumor study. Food Chem Toxicol 2012; 50:341-52. [PMID: 22079312 PMCID: PMC3486520 DOI: 10.1016/j.fct.2011.10.065] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 10/14/2011] [Accepted: 10/19/2011] [Indexed: 02/02/2023]
Abstract
Recent pilot studies found natural chlorophyll (Chl) to inhibit carcinogen uptake and tumorigenesis in rodent and fish models, and to alter uptake and biodistribution of trace (14)C-aflatoxin B1 in human volunteers. The present study extends these promising findings, using a dose-dose matrix design to examine Chl-mediated effects on dibenzo(def,p)chrysene (DBC)-induced DNA adduct formation, tumor incidence, tumor multiplicity, and changes in gene regulation in the trout. The dose-dose matrix design employed an initial 12,360 rainbow trout, which were treated with 0-4000ppm dietary Chl along with 0-225ppm DBC for up to 4weeks. Dietary DBC was found to induce dose-responsive changes in gene expression that were abolished by Chl co-treatment, whereas Chl alone had no effect on the same genes. Chl co-treatment provided a dose-responsive reduction in total DBC-DNA adducts without altering relative adduct intensities along the chromatographic profile. In animals receiving DBC alone, liver tumor incidence (as logit) and tumor multiplicity were linear in DBC dose (as log) up to their maximum-effect dose, and declined thereafter. Chl co-treatment substantially inhibited incidence and multiplicity at DBC doses up to their maximum-effect dose. These results show that Chl concentrations encountered in Chl-rich green vegetables can provide substantial cancer chemoprotection, and suggest that they do so by reducing carcinogen bioavailability. However, at DBC doses above the optima, Chl co-treatments failed to inhibit tumor incidence and significantly enhanced multiplicity. This finding questions the human relevance of chemoprevention studies carried out at high carcinogen doses that are not proven to lie within a linear, or at least monotonic, endpoint dose-response range.
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Affiliation(s)
- Tammie J McQuistan
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
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23
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Williams DE. The rainbow trout liver cancer model: response to environmental chemicals and studies on promotion and chemoprevention. Comp Biochem Physiol C Toxicol Pharmacol 2012; 155:121-7. [PMID: 21704190 PMCID: PMC3219792 DOI: 10.1016/j.cbpc.2011.05.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 05/20/2011] [Accepted: 05/24/2011] [Indexed: 02/01/2023]
Abstract
Rainbow trout (Oncorhynchus mykiss) are an outstanding model of liver cancer induction by environmental chemicals and development of strategies for chemoprevention. Trout have critical and unique advantages allowing for cancer studies with 40,000 animals to determine dose-response at levels orders of magnitude lower than possible in rodents. Examples of two promoters in this model, the dietary supplement dehydroepiandrosterone (DHEA) and industrial chemical perfluorooctanoic acid (PFOA), are presented. In addition, indole-3-carbinol (I3C) and chlorophyllin (CHL) inhibit initiation following exposure to potent human chemical carcinogens (e.g., aflatoxin B(1) (AFB(1))). Two "ED(001)" cancer studies have been conducted, utilizing approximately 40,000 trout, by dietary exposure to AFB(1) and dibenzo[d,e,f,p]chrysene (DBC). These studies represent the two largest cancer studies ever performed and expand the dose-response dataset generated by the 25,000 mouse "ED(01)" study over an order of magnitude. With DBC, the liver tumor response fell well below the LED(10) line, often used for risk assessment, even though the biomarker (liver DBC-DNA adducts) remained linear. Conversely, the response with AFB(1) remained relatively linear throughout the entire dose range. These contributions to elucidation of mechanisms of liver cancer, induced by environmental chemicals and the remarkable datasets generated with ED(001) studies, make important contributions to carcinogenesis and chemoprevention.
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Affiliation(s)
- David E Williams
- Department of Environmental and Molecular Toxicology, The Superfund Center and The Linus Pauling Institute, Oregon State University, Weniger 435, Corvallis, OR 97331-6503, USA.
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Thiyagarajan P, Senthil Murugan R, Kavitha K, Anitha P, Prathiba D, Nagini S. Dietary chlorophyllin inhibits the canonical NF-κB signaling pathway and induces intrinsic apoptosis in a hamster model of oral oncogenesis. Food Chem Toxicol 2011; 50:867-76. [PMID: 22210229 DOI: 10.1016/j.fct.2011.12.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 11/21/2011] [Accepted: 12/13/2011] [Indexed: 01/24/2023]
Abstract
Chlorophyllin, a water-soluble, semi-synthetic derivative of the ubiquitous green pigment chlorophyll is shown to exert potent anticarcinogenic effects. In the present study, we investigated the chemopreventive effects of chlorophyllin on 7,12-dimethylbenz(a)anthracene (DMBA)-induced hamster buccal pouch (HBP) carcinogenesis by analyzing the expression of NF-κB family members and markers of intrinsic apoptosis. Dietary administration of chlorophyllin (4 mg/kg bw) suppressed the development of HBP carcinomas by inhibiting the canonical NF-κB signaling pathway by downregulating IKKβ, preventing the phosphorylation of IκB-α, and reducing the expression of nuclear NF-κB. Inactivation of NF-κB signaling by chlorophyllin was associated with the induction of intrinsic apoptosis as evidenced by modulation of Bcl-2 family proteins, enforced nuclear localization of survivin, upregulation of apoptogenic molecules, activation of caspases, and cleavage of PARP. The results of the present study demonstrate that chlorophyllin inhibits the development of DMBA-induced HBP carcinogenesis by targeting NF-κB and the intrinsic apoptotic pathway. Thus, dietary agents such as chlorophyllin that simultaneously target divergent pathways of cell survival and cell death are novel candidates for cancer chemoprevention.
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Affiliation(s)
- P Thiyagarajan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
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Jubert C, Mata J, Bench G, Dashwood R, Pereira C, Tracewell W, Turteltaub K, Williams D, Bailey G. Effects of chlorophyll and chlorophyllin on low-dose aflatoxin B(1) pharmacokinetics in human volunteers. Cancer Prev Res (Phila) 2009; 2:1015-22. [PMID: 19952359 PMCID: PMC5314947 DOI: 10.1158/1940-6207.capr-09-0099] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Chlorophyll (Chla) and chlorophyllin (CHL) were shown previously to reduce carcinogen bioavailability, biomarker damage, and tumorigenicity in trout and rats. These findings were partially extended to humans, where CHL reduced excretion of aflatoxin B(1) (AFB(1))-DNA repair products in Chinese unavoidably exposed to dietary AFB(1). However, neither AFB(1) pharmacokinetics nor Chla effects were examined. We conducted an unblinded crossover study to establish AFB(1) pharmacokinetic parameters among four human volunteers, and to explore possible effects of CHL or Chla cotreatment in three of those volunteers. For protocol 1, fasted subjects received an Institutional Review Board-approved dose of 14C-AFB(1) (30 ng, 5 nCi) by capsule with 100 mL water, followed by normal eating and drinking after 2 hours. Blood and cumulative urine samples were collected over 72 hours, and 14C- AFB(1) equivalents were determined by accelerator mass spectrometry. Protocols 2 and 3 were similar except capsules also contained 150 mg of purified Chla or CHL, respectively. Protocols were repeated thrice for each volunteer. The study revealed rapid human AFB(1) uptake (plasma k(a), 5.05 + or - 1.10 h(-1); T(max), 1.0 hour) and urinary elimination (95% complete by 24 hours) kinetics. Chla and CHL treatment each significantly impeded AFB(1) absorption and reduced Cmax and AUCs (plasma and urine) in one or more subjects. These initial results provide AFB(1) pharmacokinetic parameters previously unavailable for humans, and suggest that Chla or CHL co-consumption may limit the bioavailability of ingested aflatoxin in humans, as they do in animal models.
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Affiliation(s)
- Carole Jubert
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
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26
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Benati FJ, Lauretti F, Faccin LC, Nodari B, Ferri DV, Mantovani MS, Linhares REC, Nozawa C. Effects of chlorophyllin on replication of poliovirus and bovine herpesvirus in vitro. Lett Appl Microbiol 2009; 49:791-5. [PMID: 19843214 DOI: 10.1111/j.1472-765x.2009.02744.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS Chlorophyllin (CHLN), a synthetic derivative of chlorophyll, was assayed in the replication of poliovirus (PV-1) and bovine herpesvirus (BoHV-1) in HEp-2 cell cultures. METHODS AND RESULTS Virucidal activity of CHLN was evaluated and the time-of-addition assay was performed as follows: before the infection (-1 and -2 h), at the time of the infection (0 h) and after the infection (1 and 2 h). Plaque reduction assay (PRA) showed that CHLN inhibited BoHV-1 and PV-1 infection and the 50% inhibitory concentrations (IC(50)) against BoHV-1 and PV-1 infection were 8.6 and 19.8 microg ml(-1), respectively. The time-of-addition study demonstrated that the CHLN was effective inhibiting viral replication in 51% and 66.5% for PV-1 and BoHV-1, respectively, at the highest concentration of 20.0 microg ml(-1), when added during the infection. The directed effect of CHLN on viral strains demonstrated an inhibition of 62% and 66.4% for PV-1 and BoHV-1, respectively, by PRA. CONCLUSIONS These results demonstrated that CHLN could be used as an antiviral suggesting directed activity on virus particles and on virus-receptor sites to BoHV. For poliovirus, CHLN also demonstrated virucide activity, moreover, showed to inhibit early steps of the replication cycle. SIGNIFICANCE AND IMPACT OF THE STUDY CHLN demonstrated promising selectivity index for both virus strains; therefore, it can be used for the development of an antiviral agent.
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Affiliation(s)
- F J Benati
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, CEP, Brasil
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Friedman M, Levin CE, Choi SH, Lee SU, Kozukue N. Changes in the Composition of Raw Tea Leaves from the Korean Yabukida Plant during High-Temperature Processing to Pan-Fried Kamairi-Cha Green Tea. J Food Sci 2009; 74:C406-12. [DOI: 10.1111/j.1750-3841.2009.01185.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Castro DJ, Lohr CV, Fischer KA, Waters KM, Webb-Robertson BJM, Dashwood RH, Bailey GS, Williams DE. Identifying efficacious approaches to chemoprevention with chlorophyllin, purified chlorophylls and freeze-dried spinach in a mouse model of transplacental carcinogenesis. Carcinogenesis 2008; 30:315-20. [DOI: 10.1093/carcin/bgn280] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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