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Neelofar K, Haneef J, Ahmad J, Alam K, Zaidi R. Anti-glycating and anti-cytotoxic effect of silibinin on albumin at early glycation: A physiochemical study. Arch Biochem Biophys 2024; 753:109916. [PMID: 38296016 DOI: 10.1016/j.abb.2024.109916] [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: 12/06/2023] [Revised: 01/27/2024] [Accepted: 01/28/2024] [Indexed: 02/26/2024]
Abstract
During persistent hyperglycaemia, albumin, one of the major blood proteins, can undergo fast glycation. It can be expected that timely inhibition of protein glycation might be add quality years to diabetic patients' life. Therefore, this study was designed to analyse the role of silibinin to reduced or delay amadori adduct formation at early glycation and its beneficial effect to improve the glycated albumin structure and conformation. We also analysed cytotoxic effect of amadori-albumin in the presence of silibinin on murine macrophage cell line RAW cells by MTT (3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide) assay. Formation of early glycated product (furosine) in all samples was confirmed by LCMS. Albumin incubated with glucose only showed presence of furosine like structure. Albumin treated with silibinin in the presence of glucose did not show such furosine like peak. This LCMS result showed the silibinin play a protective role in the formation of early glycated product. HMF contents were also reduced in the presence of silibinin, when albumin was incubated with increasing concentrations of silibinin (100 and 200 μM) in the presence of glucose. ANS binding fluorescence decrease by increasing silibinin concentrations with amadori-albumin. SDS-PAGE was also showed that no significant difference in the band mobility of albumin treated with silibinin as compared to native albumin. The secondary conformational alteration in amadori-albumin due to silibinin were confirmed by FTIR. This spectrum showed slight shift in amide I and Amide II band in albumin co-incubated with glucose and silibinin as compared to albumin incubated with glucose only. We further discussed about cytotoxic effect of amadori albumin and its prevention by silibinin. MTT assay results demonstrated that amadori-albumin showed cytotoxic effect on RAW cells but silibinin showed protective role and increased the cell viability. Moreover, the results showed that silibinin has anti-glycating potential and playing a role to prevent the formation of Amadori-albumin in-vitro. Silibinin possesses strong anti-glycating capacity and can improve albumin structure and function at early stage. It might be useful in delaying the progression of diabetes mellitus and its secondary complications at early stage.
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Affiliation(s)
- Km Neelofar
- Department of Biochemistry, School of Chemicals and life Sciences, Jamia Hamdard University, New Delhi, India.
| | - Jamshed Haneef
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Jamal Ahmad
- Formerly at Rajiv Gandhi Centre for Diabetes and Endocrinology, J. N. Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Khursheed Alam
- Department of Biochemistry, J. N. Medical College, Aligarh Muslim University, Aligarh, India
| | - Rana Zaidi
- Department of Biochemistry, School of Chemicals and life Sciences, Jamia Hamdard University, New Delhi, India
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Park JE, Han JS. HM-Chromanone Alleviates Hyperglycemia by Protecting Pancreatic Islet Cells in Streptozotocin-Induced Diabetic Mice. J Med Food 2023. [PMID: 37083465 DOI: 10.1089/jmf.2022.k.0084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
We examined the effects of HM-chromanone (HMC) on alleviating hyperglycemia and protecting pancreatic β-cells from streptozotocin (STZ)-induced damage in C57BL/6J mice. HMC was administered to STZ-induced diabetic mice at 10 or 30 mg/kg, for 14 days. Thereafter, changes in fasting blood glucose levels, insulin-secretion, histopathological examination of pancreas islet cell and apoptotic protein levels, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay were determined. The results revealed that HMC dose-dependently improved blood glucose concentrations and alleviated pancreatic islet cells damage. In diabetic mice, degeneration of the islet cells was observed wherein they appeared shrunken, with hyaline deterioration, nuclear dissolution, and condensation. However, morphology of the islet cell was restored, and nuclei were visibly rounded in the HMC (30 mg/kg)-administered diabetic mice. In addition, β-cell numbers were markedly increased in HMC mice compared to STZ-induced diabetic mice, and the number of cells stained with glucagon was decreased. HMC markedly decreased the expression of proapoptotic proteins and increased antiapoptotic proteins, and the number of apoptotic cells detected by TUNEL was elevated. HMC decreased expression of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α in diabetic mice. Moreover, HMC increased antioxidant-enzymes activity, and decreased reactive oxygen species generation. In conclusion, the results demonstrate the potential of HMC to alleviate hyperglycemia by protecting the pancreatic β-cells in diabetic mice.
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Affiliation(s)
- Jae Eun Park
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan, Korea
| | - Ji Sook Han
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan, Korea
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Mechanism Underlying Naringenin Hypocholesterolemic Effects: Involvement of Estrogen Receptor α Subtype. Int J Mol Sci 2022; 23:ijms232415809. [PMID: 36555447 PMCID: PMC9779308 DOI: 10.3390/ijms232415809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/08/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022] Open
Abstract
Naringenin (Nar) is one of major citrus flavonoids predominantly found in grapefruit and orange. In vivo studies have demonstrated Nar potential as a normolipidemic agent capable to reduce circulating cholesterol in hypercholesterolemic rabbits, rats, and patients, suggesting a new role for this molecule in cardiovascular disease prevention. Although Nar cholesterol-lowering effects are known, the underlying mechanisms have not yet been elucidated. Interestingly, Nar binds to the estrogen receptors (ERs), modulating both transcriptional and membrane-initiating signals. Although estrogen and ERs are deeply involved in lipid metabolism, no data are available regarding a putative role of these nuclear receptors as mediators of the hypocholesterolemic effect exerted by Nar. Thus, the aim of this work was to study the involvement of ERs in Nar-induced modulation of cholesterol metabolism. Results obtained in HepG2 cell line demonstrate that Nar can modulate the molecular network of cholesterol homeostasis. However, these effects were only partially dependent on the activity of estrogen receptor α. As a whole, our data highlight new molecular mechanisms by which Nar influences cholesterol metabolism, opening a new scenery about dietary impact on human health.
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Periferakis A, Periferakis K, Badarau IA, Petran EM, Popa DC, Caruntu A, Costache RS, Scheau C, Caruntu C, Costache DO. Kaempferol: Antimicrobial Properties, Sources, Clinical, and Traditional Applications. Int J Mol Sci 2022; 23:ijms232315054. [PMID: 36499380 PMCID: PMC9740324 DOI: 10.3390/ijms232315054] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/23/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Flavonoids are a category of plant-derived compounds which exhibit a large number of health-related effects. One of the most well-known and studied flavonoids is kaempferol, which can be found in a wide variety of herbs and plant families. Apart from their anticarcinogenic and anti-inflammatory effects, kaempferol and its associated compounds also exhibit antibacterial, antifungal, and antiprotozoal activities. The development of drugs and treatment schemes based on these compounds is becoming increasingly important in the face of emerging resistance of numerous pathogens as well as complex molecular interactions between various drug therapies. In addition, many of the kaempferol-containing plants are used in traditional systems all over the world for centuries to treat numerous conditions. Due to its variety of sources and associated compounds, some molecular mechanisms of kaempferol antimicrobial activity are well known while others are still under analysis. This paper thoroughly documents the vegetal and food sources of kaempferol as well as the most recent and significant studies regarding its antimicrobial applications.
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Affiliation(s)
- Argyrios Periferakis
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
| | - Konstantinos Periferakis
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
- Pan-Hellenic Organization of Educational Programs (P.O.E.P), 17236 Athens, Greece
- Orasis Acupuncture Institute, 11526 Athens, Greece
| | - Ioana Anca Badarau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Elena Madalina Petran
- Department of Biochemistry, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Toxicology, Grigore Alexandrescu Emergency Children’s Hospital, 011743 Bucharest, Romania
| | - Delia Codruta Popa
- Department of Biochemistry, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Hematology, Fundeni Clinical Institute, 022328 Bucharest, Romania
- Correspondence: (D.C.P.); (C.S.)
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, ‘Titu Maiorescu’ University, 031593 Bucharest, Romania
| | - Raluca Simona Costache
- Department of Gastroenterology, Gastroenterology and Internal Medicine Clinic, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Internal Medicine and Gastroenterology, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Correspondence: (D.C.P.); (C.S.)
| | - Constantin Caruntu
- Department of Physiology, The “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology, ‘Prof. N.C. Paulescu’ National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
| | - Daniel Octavian Costache
- Department of Dermatology, ‘Dr. Carol Davila’ Central Military Emergency Hospital, 010825 Bucharest, Romania
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Ali MY, Jannat S, Jung HA, Choi JS. Structural Bases for Hesperetin Derivatives: Inhibition of Protein Tyrosine Phosphatase 1B, Kinetics Mechanism and Molecular Docking Study. Molecules 2021; 26:molecules26247433. [PMID: 34946519 PMCID: PMC8705904 DOI: 10.3390/molecules26247433] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/26/2022] Open
Abstract
In the present study, we investigated the structure-activity relationship of naturally occurring hesperetin derivatives, as well as the effects of their glycosylation on the inhibition of diabetes-related enzyme systems, protein tyrosine phosphatase 1B (PTP1B) and α-glycosidase. Among the tested hesperetin derivatives, hesperetin 5-O-glucoside, a single-glucose-containing flavanone glycoside, significantly inhibited PTP1B with an IC50 value of 37.14 ± 0.07 µM. Hesperetin, which lacks a sugar molecule, was the weakest inhibitor compared to the reference compound, ursolic acid (IC50 = 9.65 ± 0.01 µM). The most active flavanone hesperetin 5-O-glucoside suggested that the position of a sugar moiety at the C-5-position influences the PTP1B inhibition. It was observed that the ability to inhibit PTP1B is dependent on the nature, position, and number of sugar moieties in the flavonoid structure, as well as conjugation. In the kinetic study of PTP1B enzyme inhibition, hesperetin 5-O-glucoside led to mixed-type inhibition. Molecular docking studies revealed that hesperetin 5-O-glucoside had a higher binding affinity with key amino residues, suggesting that this molecule best fits the PTP1B allosteric site cavity. The data reported here support hesperetin 5-O-glucoside as a hit for the design of more potent and selective inhibitors against PTP1B in the search for a new anti-diabetic treatment.
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Affiliation(s)
- Md Yousof Ali
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute and Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada;
| | - Susoma Jannat
- Department of Biochemistry and Molecular Biology, University of Calgary, AB T2N 1N4, Canada;
| | - Hyun-Ah Jung
- Department of Food Science and Human Nutrition, Jeonbuk National University, Jeonju 54896, Korea
- Correspondence: (H.-A.J.); (J.-S.C.); Tel.: +82-51-629-7547 (J.-S.C.)
| | - Jae-Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 48513, Korea
- Correspondence: (H.-A.J.); (J.-S.C.); Tel.: +82-51-629-7547 (J.-S.C.)
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Guo F, Yan D, Qin Z, Bais S. Prunin modulates the Expression of Cerebral Serotonin Induced by Anxiety-Like Behavior in Mice. Nat Prod Commun 2021. [DOI: 10.1177/1934578x21991664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Anxiety is a state that becomesa disorder when a person experiences disproportionate levels of anxiety on a regular basis. This disproportion is also accompanied by excessive nervousness and fear. This study aimed to determine the protective effect of prunin using different anxiety models. Three preclinical anxiety models, elevated plus maze, light/dark, and social interaction, were employed in the study. Albino mice were selected and treated with pruninand other drugs for 7 days to determine their anti-anxiety effect. Thereafter, their behavior was examined using the plus maze, light-dark chamber, and other stimulatory parameters, such asimmobility, sniffing, and crawling during experimentation. Two doses (50 mg/kg and 100 mg/kg, p.o.) of prunin were administered to two separate mice groups. Further, fluoxetine (10 mg/kg; p.o.) was administered to one of the mice groups for 7 days. Thereafter, the levels of neurotransmitters, such as serotonin and GABA, in brain samples were determined. Based on the results, prunin significantly improved the behavior and mobility of animals in all three anxiety models. Further, prunin modulated the release of serotonin and GABA, demonstrating the mechanistic approach it employs to interact with cellular receptors to mimic neurotransmission. The mRNA expression levels of tph2 (5-HT synthesizing enzyme) and slc6a4 (5-HT transporter) were also found to be downregulated in both prunin- and fluoxetine-treated mice brains. Collectively, our findings suggest that prunin could be administered to treat anxiety in mice. However, further studies should be carried out to explore its potential for clinical application.
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Affiliation(s)
- Feng Guo
- Department of Neurology, Hunan children’s Hospital, No.86 Ziyuan Road, Changsha City, Hunan Province,410007, China
| | - Dongtao Yan
- Department of Psychiatry, The Second People’s Hospital of Dezhou, Dezhou, China
| | - Zifu Qin
- Department of Health, Vertigo Examination Room, Central Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Souravh Bais
- ADINA Institute of Pharmaceutical Science, Sagar, 470002, India
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Kang E, Park JE, Seo Y, Han JS. ( E)-5-hydroxy-7-methoxy-3-(2'-hydroxybenzyl)-4-chromanone isolated from Portulaca oleracea L. suppresses LPS-induced inflammation in RAW 264.7 macrophages by downregulating inflammatory factors. Immunopharmacol Immunotoxicol 2021; 43:611-621. [PMID: 34388059 DOI: 10.1080/08923973.2021.1963271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
CONTEXT Portulaca oleracea L. is herbaceous succulent annual plant, which belongs to the Portulacaceae family. Many studies have shown its wide spectrum of pharmacological activities such as anti-cancer and anti-diabetic effects. OBJECTIVES The objective of this study was to identify the anti-inflammatory effects of HM-chromanone isolated from Portulaca oleracea L. in LPS-stimulated RAW 264.7 macrophages. MATERIALS AND METHODS LPS (1 μg/ml)-stimulated mouse RAW 264.7 macrophages were used to assess the anti-inflammatory effect of HM-chromanone (10-50 μM). Cell viability was evaluated by MTT assay. In addition, the production of intracellular ROS, superoxide anion, lipid peroxide, NO, and PGE2, and activity of antioxidant enzymes were analyzed. The expressions of iNOS, COX-2, IκB, NF-κB, TNF-α, IL-1β and IL-6 were evaluated by western blot analysis. RESULTS HM-chromanone has demonstrated that there is no significant cytotoxic effect on the viability of RAW 264.7 macrophages. In LPS-stimulated RAW 264.7 cells, HM-chromanone treatment was found to significantly inhibit the production of intracellular ROS, superoxide anion and lipid peroxide, while enhancing the activity of antioxidant enzymes such as SOD, catalase, and GSH-px. Additionally, HM-chromanone treatment was observed to inhibit NO and PGE2 production by inhibiting the expression of iNOS and COX-2. Subsequently, HM-chromanone was observed to significantly suppress LPS-induced expression of IκB, NF-κB, TNF-α, IL-1β and IL-6. DISCUSSION AND CONCLUSION Overall, our results suggested that HM-chromanone suppresses LPS-induced inflammation in RAW 264.7 macrophages by downregulating the expression of inflammatory factors.
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Affiliation(s)
- Eunji Kang
- Department of Food Science and Nutrition, Pusan National University, Busan, Republic of Korea
| | - Jae Eun Park
- Department of Food Science and Nutrition, Pusan National University, Busan, Republic of Korea
| | - Youngwan Seo
- Division of Marine Bioscience, Korea Maritime and Ocean University, Busan, Republic of Korea
| | - Ji Sook Han
- Department of Food Science and Nutrition, Pusan National University, Busan, Republic of Korea
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Osorio M, Carvajal M, Vergara A, Butassi E, Zacchino S, Mascayano C, Montoya M, Mejías S, Martín MCS, Vásquez-Martínez Y. Prenylated Flavonoids with Potential Antimicrobial Activity: Synthesis, Biological Activity, and In Silico Study. Int J Mol Sci 2021; 22:ijms22115472. [PMID: 34067346 PMCID: PMC8196815 DOI: 10.3390/ijms22115472] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022] Open
Abstract
Prenylated flavonoids are an important class of naturally occurring flavonoids with important biological activity, but their low abundance in nature limits their application in medicines. Here, we showed the hemisynthesis and the determination of various biological activities of seven prenylated flavonoids, named 7–13, with an emphasis on antimicrobial ones. Compounds 9, 11, and 12 showed inhibitory activity against human pathogenic fungi. Compounds 11, 12 (flavanones) and 13 (isoflavone) were the most active against clinical isolated Staphylococcus aureus MRSA, showing that structural requirements as prenylation at position C-6 or C-8 and OH at positions C-5, 7, and 4′ are key to the antibacterial activity. The combination of 11 or 12 with commercial antibiotics synergistically enhanced the antibacterial activity of vancomycin, ciprofloxacin, and methicillin in a factor of 10 to 100 times against drug-resistant bacteria. Compound 11 combined with ciprofloxacin was able to decrease the levels of ROS generated by ciprofloxacin. According to docking results of S enantiomer of 11 with ATP-binding cassette transporter showed the most favorable binding energy; however, more studies are needed to support this result.
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Affiliation(s)
- Mauricio Osorio
- Laboratorio de Productos Naturales, Departamento de Química, Universidad Técnica Federico Santa María, Valparaíso 2390123, Chile
- Correspondence: (M.O.); (Y.V.-M.)
| | - Marcela Carvajal
- Centro de Biotecnología CB-DAL, Universidad Técnica Federico Santa María, Valparaíso 2390136, Chile; (M.C.); (A.V.)
| | - Alejandra Vergara
- Centro de Biotecnología CB-DAL, Universidad Técnica Federico Santa María, Valparaíso 2390136, Chile; (M.C.); (A.V.)
| | - Estefania Butassi
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina; (E.B.); (S.Z.)
| | - Susana Zacchino
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina; (E.B.); (S.Z.)
| | - Carolina Mascayano
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 9170022, Chile;
| | - Margarita Montoya
- Laboratorio Bioquímica Celular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 9170022, Chile; (M.M.); (S.M.)
| | - Sophia Mejías
- Laboratorio Bioquímica Celular, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 9170022, Chile; (M.M.); (S.M.)
| | - Marcelo Cortez-San Martín
- Laboratorio de Virología Molecular y Control de Patógenos, Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 9170022, Chile;
| | - Yesseny Vásquez-Martínez
- Programa Centro de Investigaciones Biomédicas Aplicadas, Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Santiago 9170022, Chile
- Correspondence: (M.O.); (Y.V.-M.)
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Sheen YS, Huang HY, Liao YH. The efficacy and safety of an antiaging topical serum containing hesperetin and sodium cyclic lysophosphatidic acid: A single-center clinical trial. J Cosmet Dermatol 2021; 20:3960-3967. [PMID: 33690913 DOI: 10.1111/jocd.14063] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/08/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Skin aging is characterized by dehydration and degradation of the structural components in the dermis. It has been demonstrated that hesperetin possesses collagen synthesis and antioxidant properties and sodium cyclic lysophosphatidic acid (NcPA) increases skin moisture through upregulating the synthesis of hyaluronic acid. AIMS To evaluate the efficacy and safety of a serum containing hesperetin 0.1% and NcPA 0.1% for photoaged skin. PATIENTS/METHODS The trial consisted of a 12-week topical application of the test product twice daily. A total of 35 female subjects were enrolled. The primary outcome was the change of skin hydration and elasticity, which were determined by Corneometer and Cutometer measurements. Skin biopsy for histological evaluations and subject's self-assessment were conducted. RESULTS At week 12, a significant improvement of stratum corneum hydration (p = 0.015) and skin elasticity (p < 0.001) was detected comparing to baseline. The skin biopsy showed significantly improved scores of hyaluronic acid levels (p = 0.034) and elastic fiber structure (p = 0.023). Moreover, the test product resulted in a significant subject-reported overall satisfaction rate 94.3% after 12-week application (p = 0.005). CONCLUSION Skin care product containing hesperetin and NcPA showed significant antiaging effects on skin hydration and elasticity.
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Affiliation(s)
- Yi-Shaun Sheen
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsin-Yi Huang
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Tiliacora triandra (Colebr.) Diels Leaf Aqueous Extract Inhibits Hepatic Glucose Production in HepG2 Cells and Type 2 Diabetic Rats. Molecules 2021; 26:molecules26051239. [PMID: 33669133 PMCID: PMC7956658 DOI: 10.3390/molecules26051239] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/16/2021] [Accepted: 02/19/2021] [Indexed: 01/04/2023] Open
Abstract
This study investigated the effects of Tiliacora triandra (Colebr.) Diels aqueous extract (TTE) on hepatic glucose production in hepatocellular carcinoma (HepG2) cells and type 2 diabetic (T2DM) conditions. HepG2 cells were pretreated with TTE and its major constituents found in TTE, epicatechin (EC) and quercetin (QC). The hepatic glucose production was determined. The in vitro data were confirmed in T2DM rats, which were supplemented daily with 1000 mg/kg body weight (BW) TTE, 30 mg/kg BW metformin or TTE combined with metformin for 12 weeks. Results demonstrate that TTE induced copper-zinc superoxide dismutase, glutathione peroxidase and catalase genes, similarly to EC and QC. TTE decreased hepatic glucose production by downregulating phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) and increasing protein kinase B and AMP-activated protein kinase phosphorylation in HepG2 cells. These results correlated with the antihyperglycemic, antitriglyceridemic, anti-insulin resistance, and antioxidant activities of TTE in T2DM rats, similar to the metformin and combination treatments. Consistently, impairment of hepatic gluconeogenesis in T2DM rats was restored after single and combined treatments by reducing PEPCK and G6Pase genes. Collectively, TTE could potentially be developed as a nutraceutical product to prevent glucose overproduction in patients with obesity, insulin resistance, and diabetes who are being treated with antidiabetic drugs.
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11
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Isolation of Prunin From Bauhinia variegataand Its Antioxidant Activity in Rats Fed an Atherogenic Diet. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20967875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Atherosclerosis is no longer a disease attributed mainly to high cholesterol content in the body; it has come to be regarded as a chronic inflammatory disease with an autoimmune component. The purpose of this study was to investigate the effect of the prunin fraction (PF) isolated from the ethanolic extract of Bauhinia variegata against the release of various proinflammatory mediators in rats fed an atherogenic diet. The diet was administered orally to Sprague Dawley rats for 60 days to induce atherosclerosis. The blood serum of the rats was used to estimate the levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), thiobarbituric acid reactive substance, catalase, total cholesterol, triglyceride, low-density lipoprotein, and high-density lipoprotein using assay kits. Other physical parameters, such as body weight, feed intake, and systolic blood pressure, were also determined during the study. The results showed a significant protective effect of the PF against diet-induced atherosclerosis by decreasing the levels of proinflammatory mediators such as TNF-α and IL-6. Rats treated with PF (20 and 40 mg/kg) showed a change in systolic blood pressure and a reduction in oxidative stress induced by the atherogenic diet. Reduction in body weight and modulation of food intake were observed in PF-treated rats, which indicated atheroprotective, hypolipidemic, and antioxidant effects. The study concludes that the atheroprotective properties of PF are due to effects on the initial phase of plaque formation to thrombus formation. This study may help researchers to find a better alternative for selecting optimal therapies and preventing plaque formation. Future Significance: This article focuses on the molecular mechanisms involved in the evolution of atherosclerotic plaques and different targets that act at the starting stage of the plaque to thrombus formation. This may pave the way for selecting optimal therapies and preventing plaque complications.
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Flavanone glycosides inhibit β-site amyloid precursor protein cleaving enzyme 1 and cholinesterase and reduce Aβ aggregation in the amyloidogenic pathway. Chem Biol Interact 2019; 309:108707. [DOI: 10.1016/j.cbi.2019.06.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/24/2019] [Accepted: 06/10/2019] [Indexed: 12/16/2022]
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Diaz A, Treviño S, Pulido-Fernandez G, Martínez-Muñoz E, Cervantes N, Espinosa B, Rojas K, Pérez-Severiano F, Montes S, Rubio-Osornio M, Jorge G. Epicatechin Reduces Spatial Memory Deficit Caused by Amyloid-β25⁻35 Toxicity Modifying the Heat Shock Proteins in the CA1 Region in the Hippocampus of Rats. Antioxidants (Basel) 2019; 8:antiox8050113. [PMID: 31052185 PMCID: PMC6562866 DOI: 10.3390/antiox8050113] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/25/2019] [Accepted: 04/01/2019] [Indexed: 11/16/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by dementia and the aggregation of the amyloid beta peptide (Aβ). Aβ25-35 is the most neurotoxic sequence, whose mechanism is associated with the neuronal death in the Cornu Ammonis 1 (CA1) region of the hippocampus (Hp) and cognitive damage. Likewise, there are mechanisms of neuronal survival regulated by heat shock proteins (HSPs). Studies indicate that pharmacological treatment with flavonoids reduces the prevalence of AD, particularly epicatechin (EC), which shows better antioxidant activity. The aim of this work was to evaluate the effect of EC on neurotoxicity that causes Aβ25-35 at the level of spatial memory as well as the relationship with immunoreactivity of HSPs in the CA1 region of the Hp of rats. Our results show that EC treatment reduces the deterioration of spatial memory induced by the Aβ25-35, in addition to reducing oxidative stress and inflammation in the Hp of the animals treated with EC + Aβ25-35. Likewise, the immunoreactivity to HSP-60, -70, and -90 is lower in the EC + Aβ25-35 group compared to the Aβ25-35 group, which coincides with a decrease of dead neurons in the CA1 region of the Hp. Our results suggest that EC reduces the neurotoxicity induced by Aβ25-35, as well as the HSP-60, -70, and -90 immunoreactivity and neuronal death in the CA1 region of the Hp of rats injected with Aβ25-35, which favors an improvement in the function of spatial memory.
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Affiliation(s)
- Alfonso Diaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Guadalupe Pulido-Fernandez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Estefanía Martínez-Muñoz
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
| | - Nallely Cervantes
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Karla Rojas
- Departamento de Ciencias de la Salud, Psicologia. Universidad del Valle de México, sede Sur., Ciudad de Mexico, PC. 04910, Mexico.
| | - Francisca Pérez-Severiano
- Laboratorio de Neurofarmacología Molecular y Nanotecnología, Instituto Nacional de Neurología, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Moises Rubio-Osornio
- Laboratorio Experimental de Enfermedades Neurodegenerarivas, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Guevara Jorge
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
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Akbar IZ, Dewi FRP, Setiawan B. In Silico Interaction of the Active Compounds of Scurrula Atropurpurea with the RANK/RANKL/OPG System in Diabetoporosis. Acta Inform Med 2019; 27:8-11. [PMID: 31213736 PMCID: PMC6511270 DOI: 10.5455/aim.2019.27.8-11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Introduction: Diabetoporosis is a very complex health problem in Indonesia. One approach to the problem is through native Indonesian herbal medicine. The application of Scurrula atropurpurea in the treatment of diabetoporosis has not been revealed, so preliminary in silico study needs to be done. Aim: The purpose of the present study was to analyze the interaction between the active compound of Scurrula atropurpurea and the RANKL/RANK/OPG system in the pathomechanism of osteoporosis in diabetes mellitus. Methods: The procedures of the study included the search for the constituent amino acid of the RANK/RANKL/OPG system, the search for the structure of the active component of Scurrula atropurpurea, 3D modeling of protein structure, protein-ligand docking and visualization, and analysis of protein-ligand bonding interactions. Results: Those bond energies were RANKL-aviculin (–274.96 kJ/mol), RANKL-rutin (–263.12 kJ/mol), RANKL-quercitrin (–256.98 kJ/mol), RANKL-quercetin (–226,50 kJ/mol), RANKL-kaempferol (–221,65 kJ/mol), RANKL-catechin (–214,85 kJ/mol), RANKL-epicatechin (–211.66 kJ/mol), RANKL-caffeine (-171.73 kJ/mol), and RANKL-theobromine (-161.14 kJ/mol). The bond energies were RANK-rutin (-719.26 kJ/mol), RANK-catechin (-680.15 kJ/mol), RANK-caffeine (-654.48 kJ/mol), RANK-theobromine (-651.77 kJ/mol), RANK-quercitrin (-650.68 kJ/mol), RANK-kaempferol (-643.03 kJ/mol), RANK-epicatechin (-641.86 kJ/mol), RANK-quercetin (-641.76 kJ/mol), and RANK-aviculin (-628.62 kJ/mol). Those bond energies were OPG-epicatechin (-590.09 kJ/mol), OPG-theobromine (-578.08 kJ/mol), OPG-caffeine (-568.88 kJ/mol), RANKL-catechin (-560.63 kJ/mol), OPG-quercitrin (-554.50 kJ/mol), OPG-rutin (-547.91 kJ/mol), OPG-quercetin (-545.75 kJ/mol), OPG-kaempferol (-544.48 kJ/mol), and OPG-aviculin (-539.15 kJ/mol). Conclusion: The nine active ingredients of Scurrula atropurpurea do not interfere with the physiological function of RANKL to interact with RANK. The initial interaction of RANK with catechin or rutin will facilitate the bond of RANK to RANKL. When forming a complex with OPG, epicatechin will facilitate its interaction with RANKL.
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Affiliation(s)
- Izaak Zoelkarnain Akbar
- Department of Orthopaedics and Traumatology, Ulin General Hospital, Faculty of Medicine, Universitas Lambung Mangkurat, Banjarmasin, South Kalimantan, Indonesia.,Research Center for Osteoporosis, Faculty of Medicine, Universitas Lambung Mangkurat, Banjarmasin, South Kalimantan, Indonesia
| | | | - Bambang Setiawan
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Universitas Lambung Mangkurat, Banjarmasin, South Kalimantan, Indonesia.,Research Center for Osteoporosis, Faculty of Medicine, Universitas Lambung Mangkurat, Banjarmasin, South Kalimantan, Indonesia
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15
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Yuniwati C, Ramli N, Purwita E, Yusnaini Y, Nurdahliana N, Miko A, Liana I, Andriani A, Maharani M. Molecular Docking for Active Compounds of Scurrula Atropurpurea as Anti-inflammatory Candidate in Endometriosis. Acta Inform Med 2018; 26:254-257. [PMID: 30692709 PMCID: PMC6311116 DOI: 10.5455/aim.2018.26.254-257] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 11/25/2018] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION Endometriosis is still a problem for women all over the world. There are no studies that apply herbs, especially Scurrula atropurpurea to inhibit the development of inflammation in endometriosis. AIM The purpose of this study was to analyze the docking of active ingredient of Scurrula atropurpurea on NFkB-IkB complex with IKK in silico way. MATERIAL AND METHODS The nine active ingredients of Scurrula atropurpurea analyzed here were including aviculin (CID 10391477), caffeine (CID 2519), catechin (CID: 9064), epicatechin (CID: 72276), kaempferol (CID 5280863), quercetin (CID 5280343), quercitrin (CID 5280459)), rutin (CID 5280805), and theobromine (CID 5429). The sequence of study procedures included searching for amino acid sequences and active plant component structures, protein 3D structure modeling, docking and analysis of protein-ligand interaction. RESULTS Regarding the NFkB-IkB complex, it was found that all active ingredients can interact where the strongest interaction sequence was rutin (-314.35 kJ/mol). Regarding the interaction between IKK and NFkB-IkB, the nine active ingredients can reduce bond energy, except rutin. CONCLUSIONS the active ingredients of Scurrula atropurpurea having the potential effect as anti-inflammatory is rutin so that it can be isolated and used as an alternative ingredient in inhibiting inflammation in endometriosis.
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Affiliation(s)
- Cut Yuniwati
- Department of Midwifery, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Nurlaili Ramli
- Department of Midwifery, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Eva Purwita
- Department of Midwifery, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Yusnaini Yusnaini
- Department of Midwifery, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | | | - Ampera Miko
- Department of Pharmacy, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Intan Liana
- Department of Dentistry, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Andriani Andriani
- Department of Dentistry Nursing, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
| | - Maharani Maharani
- Department of Midwifery, Polytechnic of Health, Ministry of Health, Aceh, Indonesia
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16
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Na EJ, Ryu JY. Anti-inflammatory effects of prunin on UVB-irradiated human keratinocytes. BIOMEDICAL DERMATOLOGY 2018. [DOI: 10.1186/s41702-018-0024-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Light Emission from the Fe 2+-EGTA-H₂O₂ System: Possible Application for the Determination of Antioxidant Activity of Plant Phenolics. Molecules 2018; 23:molecules23040866. [PMID: 29642591 PMCID: PMC6017907 DOI: 10.3390/molecules23040866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 11/17/2022] Open
Abstract
Oxidative reactions can result in the formation of electronically excited species that undergo radiative decay depending on electronic transition from the excited state to the ground state with subsequent ultra-weak photon emission (UPE). We investigated the UPE from the Fe2+-EGTA (ethylene glycol-bis(β-aminoethyl ether)-N,N,N′,N′-tetraacetic acid)–H2O2 system with a multitube luminometer (Peltier-cooled photon counter, spectral range 380 to 630 nm). The UPE of 92.6 µmol/L Fe2+—185.2 µmol/L EGTA—2.6 mmol/L H2O2 reached 4319 ± 755 relative light units during 2 min measurement and was about seven times higher (p < 0.001) than the UPE of incomplete systems (Fe2+-H2O2, EGTA-H2O2) and medium alone. Substitution of Fe2+ with Cr2+, Co2+, Mn2+ or Cu2+ as well as of EGTA with EDTA (ethylenediaminetetraacetic acid) or citrate completely abolished UPE. Experiments with ROS scavengers revealed the dependence of UPE on hydroxyl radicals suggesting occurrence of oxidative attack and cleavage of the ether bond in EGTA backbone structure and formation of triplet excited carbonyl groups with subsequent light emission. Plant phenolics (ferulic, chlorogenic and caffec acids) at concentration 87 µmol/L and ascorbate at 0.46 mmol/L inhibited UPE by 90 ± 4%, 90 ± 5%, 97 ± 2% and 92 ± 1%, respectively. Quenching of UPE from Fe2+-EGTA-H2O2 system can be used for evaluation of antioxidant activity of phytochemicals.
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18
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Li L, Hwang E, Ngo HTT, Lin P, Gao W, Liu Y, Yi TH. Antiphotoaging Effect of Prunus yeonesis Blossom Extract via Inhibition of MAPK/AP-1 and Regulation of the TGF-βI/Smad and Nrf2/ARE Signaling Pathways. Photochem Photobiol 2018; 94:725-732. [PMID: 29421853 DOI: 10.1111/php.12894] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 12/22/2017] [Indexed: 01/08/2023]
Abstract
Cherry blossoms have attracted attention as an ingredient with potential for use in skincare products. However, no skin photoaging-related research has been performed with this plant. In this study, cherry blossom extract (CBE) at 1, 10 and 100 μg mL-1 was investigated for its skin antiphotoaging effects in UVB-irradiated normal human dermal fibroblasts (NHDF) cells in vitro. Our results showed that CBE markedly increased type-I procollagen during UVB exposure via two pathways. Firstly, transcription activator protein-1 expression and MAP kinases were downregulated, consequently reducing the production of matrix metalloproteinase (MMP)-1 and MMP-3. Secondly, transforming growth factor TGF-βI secretion was upregulated by Smads. Application of CBE facilitated the nuclear translocation of Nrf2 against reactive oxygen species (ROS)-induced damage, which is essential for the coordinated induction of cytoprotective enzymes. Together, our findings suggest that CBE may be a promising ingredient for skin aging therapy and provide a novel approach for alleviating cutaneous aging.
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Affiliation(s)
- Lu Li
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Eunson Hwang
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Hien T T Ngo
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Pei Lin
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Wei Gao
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Ying Liu
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
| | - Tae-Hoo Yi
- College of Life Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do, Korea
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Roychoudhury S, Agarwal A, Virk G, Cho CL. Potential role of green tea catechins in the management of oxidative stress-associated infertility. Reprod Biomed Online 2017; 34:487-498. [DOI: 10.1016/j.rbmo.2017.02.006] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 01/27/2017] [Accepted: 02/03/2017] [Indexed: 12/25/2022]
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20
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Bai X, Yang P, Zhou Q, Cai B, Buist‐Homan M, Cheng H, Jiang J, Shen D, Li L, Luo X, Faber KN, Moshage H, Shi G. The protective effect of the natural compound hesperetin against fulminant hepatitis in vivo and in vitro. Br J Pharmacol 2017; 174:41-56. [PMID: 27714757 PMCID: PMC5341490 DOI: 10.1111/bph.13645] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 09/21/2016] [Accepted: 09/23/2016] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Liver diseases are mostly accompanied by inflammation and hepatocyte death. Therapeutic approaches targeting both hepatocyte injury and inflammation are not available. Natural compounds are considered as potential treatment for inflammatory liver diseases. Hesperetin, a flavonoid component of citrus fruits, has been reported to have anti-inflammatory properties. The aim of this study was to evaluate the cytoprotective and anti-inflammatory properties of hesperetin both in vitro and in models of fulminant hepatitis. EXPERIMENTAL APPROACH Apoptotic cell death and inflammation were induced in primary cultures of rat hepatocytes by bile acids and cytokine mixture respectively. Apoptosis was quantified by caspase-3 activity and necrosis by LDH release. The concanavalin A (ConA) and D-galactosamine/LPS (D-GalN/LPS) were used as models of fulminant hepatitis. Liver injury was assessed by alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels, liver histology and TUNEL assay and inflammation by inducible NOS (iNOS) expression. KEY RESULTS Hesperetin blocked bile acid-induced apoptosis and cytokine-induced inflammation in rat hepatocytes. Moreover, hesperetin improved liver histology and protected against hepatocyte injury in ConA- and D-GalN/LPS-induced fulminant hepatitis, as assessed by TUNEL assay and serum AST and ALT levels. Hesperetin also reduced expression of the inflammatory marker iNOS and the expression and serum levels of TNFα and IFN-γ, the main mediators of cell toxicity in fulminant hepatitis. CONCLUSION AND IMPLICATIONS Hesperetin has anti-inflammatory and cytoprotective actions in models of acute liver toxicity. Hesperetin therefore has therapeutic potential for the treatment of inflammatory liver diseases accompanied by extensive hepatocyte injury, such as fulminant hepatitis.
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Affiliation(s)
- Xueting Bai
- Department of PharmacologyShantou University Medical CollegeShantouChina
- Department of Gastroenterology and HepatologyUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
| | - Peixuan Yang
- Health Care CenterThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Qiaoling Zhou
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Bozhi Cai
- Laboratory of Molecular CardiologyThe First Affiliated Hospital of Shantou University Medical CollegeShantouChina
| | - Manon Buist‐Homan
- Department of Gastroenterology and HepatologyUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
- Department of Laboratory MedicineUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
| | - He Cheng
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Jiyang Jiang
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Daifei Shen
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Lijun Li
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Xiajiong Luo
- Department of PharmacologyShantou University Medical CollegeShantouChina
| | - Klaas Nico Faber
- Department of Gastroenterology and HepatologyUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
- Department of Laboratory MedicineUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
| | - Han Moshage
- Department of Gastroenterology and HepatologyUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
- Department of Laboratory MedicineUniversity Medical Center Groningen, University of GroningenGroningenThe Netherlands
| | - Ganggang Shi
- Department of PharmacologyShantou University Medical CollegeShantouChina
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Effect of Selected Plant Phenolics on Fe 2+-EDTA-H₂O₂ System Mediated Deoxyribose Oxidation: Molecular Structure-Derived Relationships of Anti- and Pro-Oxidant Actions. Molecules 2016; 22:molecules22010059. [PMID: 28042856 PMCID: PMC6155846 DOI: 10.3390/molecules22010059] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 12/17/2016] [Accepted: 12/24/2016] [Indexed: 01/31/2023] Open
Abstract
In the presence of transition metal ions and peroxides, polyphenols, well-known dietary antioxidants, can act as pro-oxidants. We investigated the effect of 13 polyphenols and their metabolites on oxidative degradation of deoxyribose by an •OH generating Fenton system (Fe2+-ethylenediaminetetraacetic acid (EDTA)-H2O2). The relationship between phenolics pro-oxidant/anti-oxidant effects and their molecular structure was analyzed using multivariate analysis with multiple linear regression and a backward stepwise technique. Four phenolics revealed a significant inhibitory effect on OH-induced deoxyribose degradation, ranging from 54.4% ± 28.6% (3,4-dihydroxycinnamic acid) to 38.5% ± 10.4% (catechin) (n = 6), correlating with the number of –OH substitutions (r = 0.58). Seven phenolics augmented the oxidative degradation of deoxyribose with the highest enhancement at 95.0% ± 21.3% (quercetin) and 60.6% ± 12.2% (phloridzin). The pro-oxidant effect correlated (p < 0.05) with the number of –OH groups (r = 0.59), and aliphatic substitutes (r = −0.22) and weakly correlated with the occurrence of a catechol structure within the compound molecule (r = 0.17). Selective dietary supplementation with phenolics exhibiting pro-oxidant activity may increase the possibility of systemic oxidative stress in patients treated with medications containing chelating properties or those with high plasma concentrations of H2O2 and non-transferrin bound iron.
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Proshkina E, Lashmanova E, Dobrovolskaya E, Zemskaya N, Kudryavtseva A, Shaposhnikov M, Moskalev A. Geroprotective and Radioprotective Activity of Quercetin, (-)-Epicatechin, and Ibuprofen in Drosophila melanogaster. Front Pharmacol 2016; 7:505. [PMID: 28066251 PMCID: PMC5179547 DOI: 10.3389/fphar.2016.00505] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 12/07/2016] [Indexed: 12/15/2022] Open
Abstract
The modulation of longevity genes and aging-associated signaling pathways using pharmacological agents is one of the potential ways to prolong the lifespan and increase the vitality of an organism. Phytochemicals flavonoids and non-steroidal anti-inflammatory drugs have a large potential as geroprotectors. The goal of the present study was to investigate the effects of long-term and short-term consumption of quercetin, (-)-epicatechin, and ibuprofen on the lifespan, resistance to stress factors (paraquat, hyperthermia, γ-radiation, and starvation), as well as age-dependent physiological parameters (locomotor activity and fecundity) of Drosophila melanogaster. The long-term treatment with quercetin and (-)-epicatechin didn't change or decreased the lifespan of males and females. In contrast, the short-term treatment with flavonoids had a beneficial effect and stimulated the resistance to paraquat and acute γ-irradiation. The short-term ibuprofen consumption had a positive effect on the lifespan of females when it was carried out at the middle age (30–40 days), and to the survival of flies under conditions of oxidative and genotoxic stresses. However, it didn't change the lifespan of males and females after the treatment during first 10 days of an imago life. Additionally, quercetin, (-)-epicatechin, and ibuprofen decreased the spontaneous locomotor activity of males, but had no effect of stimulated the physical activity and fecundity of females. Revealed quercetin, (-)-epicatechin, and ibuprofen activity can be associated with the stimulation of stress response mechanisms through the activation of pro-longevity pathways, or the induction of hormesis.
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Affiliation(s)
- Ekaterina Proshkina
- Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences (RAS) Syktyvkar, Russia
| | - Ekaterina Lashmanova
- Laboratory of Genetics of Aging and Longevity, Moscow Institute of Physics and Technology (MIPT) Dolgoprudny, Russia
| | - Eugenia Dobrovolskaya
- Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences (RAS) Syktyvkar, Russia
| | - Nadezhda Zemskaya
- Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences (RAS)Syktyvkar, Russia; Department of Ecology, Institute of Natural Sciences, Syktyvkar State UniversitySyktyvkar, Russia
| | - Anna Kudryavtseva
- Engelhardt Institute of Molecular Biology (EIMB), Russian Academy of Sciences (RAS) Moscow, Russia
| | - Mikhail Shaposhnikov
- Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences (RAS)Syktyvkar, Russia; Department of Ecology, Institute of Natural Sciences, Syktyvkar State UniversitySyktyvkar, Russia
| | - Alexey Moskalev
- Institute of Biology, Komi Science Center, Ural Branch, Russian Academy of Sciences (RAS)Syktyvkar, Russia; Laboratory of Genetics of Aging and Longevity, Moscow Institute of Physics and Technology (MIPT)Dolgoprudny, Russia; Department of Ecology, Institute of Natural Sciences, Syktyvkar State UniversitySyktyvkar, Russia; Engelhardt Institute of Molecular Biology (EIMB), Russian Academy of Sciences (RAS)Moscow, Russia
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Prunin is a highly potent flavonoid from Prunus davidiana stems that inhibits protein tyrosine phosphatase 1B and stimulates glucose uptake in insulin-resistant HepG2 cells. Arch Pharm Res 2016; 40:37-48. [DOI: 10.1007/s12272-016-0852-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 10/24/2016] [Indexed: 12/20/2022]
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24
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Leyva-López N, Nair V, Bang WY, Cisneros-Zevallos L, Heredia JB. Protective role of terpenes and polyphenols from three species of Oregano (Lippia graveolens, Lippia palmeri and Hedeoma patens) on the suppression of lipopolysaccharide-induced inflammation in RAW 264.7 macrophage cells. JOURNAL OF ETHNOPHARMACOLOGY 2016; 187:302-12. [PMID: 27131433 DOI: 10.1016/j.jep.2016.04.051] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Mexican oregano infusions have been traditionally used in México for the treatment of inflammation-related diseases, such as respiratory and digestive disorders, headaches and rheumatism, among others. Nevertheless, there is limited information regarding the phenolic compounds, terpenes and composition as well as biological activity of Mexican oregano. AIM OF THE STUDY To determine the phenolic and terpene composition and to evaluate the anti-inflammatory potential of three species of Mexican oregano (Lippia graveolens (LG), Lippia palmeri (LP) and Hedeoma patens (HP)) in order to provide a scientific basis for their use. MATERIALS AND METHODS We obtained methanol and chloroform extracts from dried oregano leaves of each species. We used LC-DAD-ESI-MS/MS and GC-MS to determine the phenolic and terpene profiles of the leaves, respectively. We evaluated anti-inflammatory potential by measuring the effect of Mexican oregano extracts on some pro-inflammatory mediators, such as nitric oxide (NO) and reactive oxygen species (ROS) using lipopolysaccharide(LPS)-stimulated RAW 264.7 macrophage cells and evaluating cyclooxygenase activity (COX-1, COX-2). RESULTS Nine phenolic compounds (phenolic acids and flavonoids) and 22 terpenes (monoterpenes and sesquiterpenes) were detected in LG, LP and HP. We studied extracts from LG, LP and HP, and fractions from LG and LP in order to know their effect on some pro-inflammatory mediators. The phenolic and terpene extracts from LG, LP and HP exhibited significant inhibitory effect on ROS and NO production and mitochondrial activity in LPS-induced inflammation in RAW 264.7 macrophage cells. Nitric oxide production was also diminished by the terpene LG fraction LGF2 and the LP fractions LPF1, LPF2 and LPF3, confirming that both monoterpenes and sesquiterpenes are active compounds of oregano. Furthermore, the total extracts of LG, LP and HP exhibited non-selective inhibitions against the activity of the cyclooxygenases COX-1 and COX-2. CONCLUSIONS Our results suggest that Lippia graveolens, Lippia palmeri and Hedeoma patens extracts have the potential to treat inflammatory diseases; their activity is mediated by polyphenols and terpenes. These findings support the claim for their traditional use in the treatment of inflammation-related diseases.
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Affiliation(s)
- Nayely Leyva-López
- Centro de Investigación en Alimentación y Desarrollo A.C., Carretera a Eldorado km 5.5 Col. El Diez C.P. 80110, Culiacán, Sinaloa, México
| | - Vimal Nair
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133, USA
| | - Woo Young Bang
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133, USA
| | - Luis Cisneros-Zevallos
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133, USA; Department of Nutrition and Food Science, Texas A&M University, College Station, TX 77843-2133, USA.
| | - J Basilio Heredia
- Centro de Investigación en Alimentación y Desarrollo A.C., Carretera a Eldorado km 5.5 Col. El Diez C.P. 80110, Culiacán, Sinaloa, México.
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Kaempferol Inhibits Pancreatic Cancer Cell Growth and Migration through the Blockade of EGFR-Related Pathway In Vitro. PLoS One 2016; 11:e0155264. [PMID: 27175782 PMCID: PMC4866780 DOI: 10.1371/journal.pone.0155264] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 04/26/2016] [Indexed: 01/11/2023] Open
Abstract
Pancreatic cancer is one of the most appalling cancers with a pessimistic prognosis. Despite many therapies, there has been no improvement of survival rates. In this study, we assessed the anti-cancer effects of kaempferol, a well known flavonoid having functional bio-activity against various malignant tumors. Kaempferol had anti-cancer effects on Miapaca-2, Panc-1, and SNU-213 human pancreatic cancer cells. In a dose-dependent manner, kaempferol decreased viability of these pancreatic cancer cells by increasing apoptosis. In particular, kaempferol effectively inhibited the migratory activity of human pancreatic cancer cells at relatively low dosages without any toxicity. The anti-cancer effect of kaempferol was mediated by inhibition of EGFR related Src, ERK1/2, and AKT pathways. These results collectively indicate that kaempferol, a phytochemical ingredient reported to have anti-viability and anti-oxidant properties, can act as a safety anti-migration reagent in human pancreatic cancer cells, which provide the rationale for further investigation of kaempferol as a strong candidate for the potential clinical trial of malignant pancreatic cancers.
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Hesperetin Induces the Apoptosis of Gastric Cancer Cells via Activating Mitochondrial Pathway by Increasing Reactive Oxygen Species. Dig Dis Sci 2015; 60:2985-95. [PMID: 25972151 DOI: 10.1007/s10620-015-3696-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 04/29/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND Hesperetin, has been shown to exert biological activities on various types of human cancers. However, few related studies on gastric cancer are available. AIM In this study, we sought to investigate the effect of hesperetin on gastric cancer and clarify its specific mechanism. MATERIALS AND METHODS Cell Counting Kit-8, 2',7'-dichlorofluorescin diacetate, JC-1, Hoechst 33258 staining, and western bolt were used to detect cell viability, levels of intracellular reactive oxygen species (ROS), changes in mitochondrial membrane potential (△ψ m), cell apoptosis, and expressions of mitochondrial pathway proteins, respectively. Meanwhile, xenograft tumor models in nude mice were made to evaluate the effect of hesperetin on gastric cancer in vivo. RESULTS Compared with the control group, the proliferation of gastric cancer cells in hesperetin groups was significantly inhibited (P < 0.05), and dose- and time-dependent effects were observed. Pretreatment with H2O2 (1 mM) or N-acetyl-L-cysteine (5 mM) enhanced or attenuated the hesperetin-induced inhibition of cell viability (P < 0.05). Percentages of apoptotic cells, levels of intracellular ROS, and △ψ m varied with the dose and treatment time of hesperetin (P < 0.05), and hesperetin caused an increase in the levels of AIF, Apaf-1, Cyt C, caspase-3, caspase-9, and Bax and a decrease in Bcl-2 levels (P < 0.05). Meanwhile, hesperetin significantly inhibited the growth of xenograft tumors (P < 0.05). CONCLUSION Our study suggests that hesperetin could inhibit the proliferation and induce the apoptosis of gastric cancer cells via activating the mitochondrial pathway by increasing the ROS.
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Molecular Mechanisms and Therapeutic Effects of (-)-Epicatechin and Other Polyphenols in Cancer, Inflammation, Diabetes, and Neurodegeneration. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:181260. [PMID: 26180580 PMCID: PMC4477097 DOI: 10.1155/2015/181260] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 12/23/2014] [Accepted: 12/31/2014] [Indexed: 01/13/2023]
Abstract
With recent insight into the mechanisms involved in diseases, such as cardiovascular disease, cancer, stroke, neurodegenerative diseases, and diabetes, more efficient modes of treatment are now being assessed. Traditional medicine including the use of natural products is widely practiced around the world, assuming that certain natural products contain the healing properties that may in fact have a preventative role in many of the diseases plaguing the human population. This paper reviews the biological effects of a group of natural compounds called polyphenols, including apigenin, epigallocatechin gallate, genistein, and (-)-epicatechin, with a focus on the latter. (-)-Epicatechin has several unique features responsible for a variety of its effects. One of these is its ability to interact with and neutralize reactive oxygen species (ROS) in the cell. (-)-Epicatechin also modulates cell signaling including the MAP kinase pathway, which is involved in cell proliferation. Mutations in this pathway are often associated with malignancies, and the use of (-)-epicatechin holds promise as a preventative agent and as an adjunct for chemotherapy and radiation therapy to improve outcome. This paper discusses the potential of some phenolic compounds to maintain, protect, and possibly reinstate health.
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Adelli GR, Hingorani T, Punyamurthula N, Balguri SP, Majumdar S. Evaluation of topical hesperetin matrix film for back-of-the-eye delivery. Eur J Pharm Biopharm 2015; 92:74-82. [PMID: 25728824 DOI: 10.1016/j.ejpb.2015.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 02/05/2015] [Accepted: 02/07/2015] [Indexed: 12/20/2022]
Abstract
PURPOSE The goal of the present study was to develop a poly (ethylene oxide) N10 (PEO N10) based melt-cast matrix system for efficient and prolonged delivery of hesperetin (HT), a promising bioflavonoid, to the posterior segment of the eye through the topical route. METHODS HT film was prepared by melt-cast method using PEO N10 and cut into 4mm×2mm segments, each weighing 8mg. This film was evaluated with respect to in vitro release rates and also transmembrane delivery across Spectra/Por® membrane (MWCO: 10,000 Daltons) and isolated rabbit corneas. Ocular tissue concentrations were also determined postapplication of the film in ex vivo and in vivo models. RESULTS HT release from the film was determined to be about 95.3% within 2h. In vitro transcorneal flux was observed to be 0.58±0.05μg/min/cm(2) across the isolated rabbit cornea. High levels of HT were detected in the retina-choroid (RC) and vitreous humor (VH) in the ex vivo model following topical application of the film. Significant levels of HT were observed in both anterior and posterior segment ocular tissues 1h post topical application of the 10 and 20%w/w HT films on the rabbit eye. Moreover, HT was detected in the VH and RC even after 6h following topical application of the film in vivo. CONCLUSION The results from this study suggest that the melt-cast films can serve as a viable platform for sustained topical delivery of bioflavonoids, and other therapeutic agents, into the back-of-the eye tissues.
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Affiliation(s)
- Goutham R Adelli
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, MS, USA
| | - Tushar Hingorani
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, MS, USA
| | - Nagendra Punyamurthula
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, MS, USA
| | - Sai Prachetan Balguri
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, MS, USA
| | - Soumyajit Majumdar
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, MS, USA; Research Institute of Pharmaceutical Sciences, The University of Mississippi, MS, USA; National Center for Natural Product Research, The University of Mississippi, MS, USA.
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Jung HA, Park JJ, Min BS, Jung HJ, Islam MN, Choi JS. Inhibition of advanced glycation endproducts formation by Korean thistle, Cirsium maackii. ASIAN PAC J TROP MED 2015; 8:1-5. [DOI: 10.1016/s1995-7645(14)60178-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 11/10/2014] [Accepted: 12/22/2014] [Indexed: 10/23/2022] Open
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Hesperidin and Rutin, Antioxidant Citrus Flavonoids, Attenuate Cisplatin-Induced Nephrotoxicity in Rats. J Biochem Mol Toxicol 2014; 28:312-9. [DOI: 10.1002/jbt.21567] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 04/03/2014] [Indexed: 01/25/2023]
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Hesperidin inhibits inflammatory response induced by Aeromonas hydrophila infection and alters CD4+/CD8+ T cell ratio. Mediators Inflamm 2014; 2014:393217. [PMID: 24891765 PMCID: PMC4033591 DOI: 10.1155/2014/393217] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Accepted: 03/21/2014] [Indexed: 12/26/2022] Open
Abstract
Background. Aeromonas hydrophila is an opportunistic bacterial pathogen that is associated with a number of human diseases. Hesperidin (HES) has been reported to exert antioxidant and anti-inflammatory activities. Objectives. The aim of this study was to investigate the potential effect of HES treatment on inflammatory response induced by A. hydrophila infection in murine. Methods. A. hydrophila-infected mice were treated with HES at 250 mg/kg b.wt./week for 4 consecutive weeks. Phagocytosis, reactive oxygen species production, CD4+/CD8+ T cell ratio, and CD14 expression on intestinal infiltrating monocytes were evaluated. The expression of E-selectin and intercellular adhesion molecule 1 on stimulated HUVECs and RAW macrophage was evaluated. Results. Percentage of CD4+ T cells in the intestinal tissues of infected treated mice was highly significantly increased; however, phagocytic index, ROS production, CD8+ T cells percentage, and CD14 expression on monocytes were significantly reduced. On the other hand, HES significantly inhibited A-LPS- and A-ECP-induced E-selectin and ICAM-1 expression on HUVECs and ICAM-1 expression on RAW macrophage. Conclusion. Present data indicated that HES has a potential role in the suppression of inflammatory response induced by A. hydrophila toxins through downmodulation of ROS production and CD14 and adhesion molecules expression, as well as increase of CD4+/CD8+ cell ratio.
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Motawi TK, Teleb ZA, El-Boghdady NA, Ibrahim SA. Effect of simvastatin and naringenin coadministration on rat liver DNA fragmentation and cytochrome P450 activity: an in vivo and in vitro study. J Physiol Biochem 2013; 70:225-37. [PMID: 24264056 DOI: 10.1007/s13105-013-0296-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 10/15/2013] [Indexed: 01/05/2023]
Abstract
This study was designed to assess the effect of naringenin (NRG) on simvastatin (SV)-induced hepatic damage in rat and to investigate the effects of these drugs on cytochrome P450 (CYP) 2E1 and 3A1/2 isoforms in order to evaluate the possibility of their coadministration. Hepatic damage in rat was induced by SV (20 and 40 mg/kg/day, po for 30 days). The protective effect of NRG (50 mg/kg/day, po) was identified by estimating liver functions and oxidative stress markers such as lipid peroxidation, reduced glutathione, superoxide dismutase, glutathion s-transferase, and catalase as well as protein profile. DNA fragmentation and histopathological study were carried out to confirm the hepatic damage. An in vitro study was conducted to further evaluate the effect of SV and/or NRG administration on the activities of two microsomal CYP isoenzymes including CYP2E1 and CYP3A1/2. SV exerted an oxidative stress which may contribute to the hepatotoxicity. Administration of NRG in combination with SV significantly improved the liver functions, state of oxidative stress, protein profile, DNA fragmentation, and the histopathological changes. SV and/or NRG have a potential to inhibit CYP3A1/2 and CYP2E1. This study concluded that concurrent administration of NRG with SV provided a protection of liver tissue against the SV-induced hepatic damage. The inhibition of CYP2E1 and CYP3A1/2 by the SV and NRG should be taken into account in order to adjust doses to avoid interaction between SV and NRG and adverse effects of SV.
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Affiliation(s)
- T K Motawi
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Effect of simvastatin and naringenin coadministration on rat liver DNA fragmentation and cytochrome P450 activity: an in vivo and in vitro study. J Physiol Biochem 2013. [PMID: 24264056 DOI: 10.1007/s13105-103-0296-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
This study was designed to assess the effect of naringenin (NRG) on simvastatin (SV)-induced hepatic damage in rat and to investigate the effects of these drugs on cytochrome P450 (CYP) 2E1 and 3A1/2 isoforms in order to evaluate the possibility of their coadministration. Hepatic damage in rat was induced by SV (20 and 40 mg/kg/day, po for 30 days). The protective effect of NRG (50 mg/kg/day, po) was identified by estimating liver functions and oxidative stress markers such as lipid peroxidation, reduced glutathione, superoxide dismutase, glutathion s-transferase, and catalase as well as protein profile. DNA fragmentation and histopathological study were carried out to confirm the hepatic damage. An in vitro study was conducted to further evaluate the effect of SV and/or NRG administration on the activities of two microsomal CYP isoenzymes including CYP2E1 and CYP3A1/2. SV exerted an oxidative stress which may contribute to the hepatotoxicity. Administration of NRG in combination with SV significantly improved the liver functions, state of oxidative stress, protein profile, DNA fragmentation, and the histopathological changes. SV and/or NRG have a potential to inhibit CYP3A1/2 and CYP2E1. This study concluded that concurrent administration of NRG with SV provided a protection of liver tissue against the SV-induced hepatic damage. The inhibition of CYP2E1 and CYP3A1/2 by the SV and NRG should be taken into account in order to adjust doses to avoid interaction between SV and NRG and adverse effects of SV.
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Spoerlein C, Mahal K, Schmidt H, Schobert R. Effects of chrysin, apigenin, genistein and their homoleptic copper(II) complexes on the growth and metastatic potential of cancer cells. J Inorg Biochem 2013; 127:107-15. [PMID: 23973682 DOI: 10.1016/j.jinorgbio.2013.07.038] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 07/29/2013] [Accepted: 07/29/2013] [Indexed: 12/21/2022]
Abstract
The (iso-)flavonoids chrysin 1, apigenin 2, genistein 3 and their homoleptic copper(II) complexes 4-6 were compared for general cancer cell growth inhibition and for antimetastatic effects on rapidly proliferating and metastasizing 518A2 melanoma cells. The complexes 4-6 were three to five times more active than the free flavonoids in cytotoxicity assays with MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] against 518A2 melanoma, HCT-116 colon, KB-V1/Vbl cervix, and MCF-7/Topo breast carcinoma cells. This activity correlated with an arrest of the cell cycle of 518A2 melanoma cells at the G2/M transition. The complexes also diminished the migration propensity of these cells in wound healing assays more distinctly than the flavonoid ligands. By fluorescent staining of F-actin and beta-catenin the antimetastatic effects of the Cu(II) genistein complex 6 were shown to originate from a remodeling of the actin cytoskeleton and an increase in cadherin-catenin complex formation, factors that favor cell-cell adhesion. Complex 6 also attenuated the expression and secretion of the metastasis-relevant matrix metalloproteinases MMP-2 and MMP-9. In summary, coordination of apigenin and genistein to Cu(II) greatly enhances the antitumoral properties of these flavonoids and potentiates their mechanistic diversity.
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Affiliation(s)
- Cornelia Spoerlein
- Organic Chemistry Laboratory, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
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Hwang SL, Shih PH, Yen GC. Neuroprotective effects of citrus flavonoids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:877-85. [PMID: 22224368 DOI: 10.1021/jf204452y] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Recent attention has been given to the influence of dietary factors on health and mental well-being. Oxidative stress is associated with many diseases including neurodegenerative disorders. Dietary flavonoids exert cardioprotective, chemopreventive, and neuroprotective effects. The biological activities of flavonoids have been attributed to their antioxidant, anti-inflammatory, and signaling properties. A clear understanding of the mechanisms of action, as either antioxidants or signaling molecules, is crucial for the application of flavonoids as interventions in neurodegeneration and as brain foods. Citrus flavonoids exert little adverse effect and have low or no cytotoxicity to healthy, normal cells. The main citrus flavonoids can also traverse the blood-brain barrier; hence, they are promising candidates for intervention in neurodegeneration and as constituents in brain foods. In this review, we discuss the bioactivity, multiple neuroprotection mechanisms, and antioxidant and signaling properties of citrus flavonoids. Receptor-mediated neuroprotective actions and parallel signaling pathways are also explored. Finally, the induction of cellular defense proteins against oxidative stress and neurotoxicity by hesperetin, a main and widespread citrus flavonoid, are also discussed. It is suggested that citrus fruits, which are rich in abundant sources of hesperetin and other flavonoids, are promising for the development of general food-based neuroprotection and brain foods.
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Affiliation(s)
- Sam-Long Hwang
- Food Industry Research and Development Institute, Hsinchu, Taiwan
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Song JH, Shim JK, Choi HJ. Quercetin 7-rhamnoside reduces porcine epidemic diarrhea virus replication via independent pathway of viral induced reactive oxygen species. Virol J 2011; 8:460. [PMID: 21967756 PMCID: PMC3200163 DOI: 10.1186/1743-422x-8-460] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Accepted: 10/04/2011] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND On the base of our previous study we were observed relevant studies on the hypothesis that the antiviral activity of quercetin 7-rhamnoside (Q7R), a flavonoid, won't relate ability of its antioxidant. METHODS We were investigated the effects of Q7R on the cytopathic effects (CPE) by CPE reduction assay. Production of DNA fragment and reactive oxygen species (ROS) induced by PEDV infection were studied using DNA fragmentation assay and flow cytometry. RESULTS In the course of this study it was discovered that Q7R is an extremely potent compound against PEDV. The addition of Q7R to PEDV-infected Vero cells directly reduced the formation of a visible cytopathic effect (CPE). Also, Q7R did not induce DNA fragmentation. Furthermore, ROS increased the infection of PEDV, which was strongly decreased by N-acetyl-L-cysteins (NAC). However, the increased ROS was not decreased by Q7R. Antiviral activity of antioxidants such as NAC, pyrrolidine dithiocarbamate (PDTC), and the vitamin E derivative, trolox, were hardly noticed. CONCLUSIONS We concluded that the inhibition of PEDV production by Q7R is not simply due to a general action as an antioxidants and is highly specific, as several other antioxidants (NAC, PDTC, trolox) are inactive against PEDV infection.
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Affiliation(s)
- Jae Hyoung Song
- Department of Herbal Resources, Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan 570-749, South Korea
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Raza SS, Khan MM, Ahmad A, Ashafaq M, Khuwaja G, Tabassum R, Javed H, Siddiqui MS, Safhi MM, Islam F. Hesperidin ameliorates functional and histological outcome and reduces neuroinflammation in experimental stroke. Brain Res 2011; 1420:93-105. [DOI: 10.1016/j.brainres.2011.08.047] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 08/18/2011] [Accepted: 08/19/2011] [Indexed: 10/17/2022]
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Antioxidant effects of the ethanol extract from flower of Camellia japonica via scavenging of reactive oxygen species and induction of antioxidant enzymes. Int J Mol Sci 2011; 12:2618-30. [PMID: 21731461 PMCID: PMC3127137 DOI: 10.3390/ijms12042618] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 04/11/2011] [Accepted: 04/12/2011] [Indexed: 01/27/2023] Open
Abstract
The aim of this study was to investigate the antioxidant properties of the ethanol extract of the flower of Camellia japonica (Camellia extract). Camellia extract exhibited 1,1-diphenyl-2-picrylhydrazyl radical and intracellular reactive oxygen species (ROS) scavenging activity in human HaCaT keratinocytes. In addition, Camellia extract scavenged superoxide anion generated by xanthine/xanthine oxidase and hydroxyl radical generated by the Fenton reaction (FeSO4 + H2O2) in a cell-free system, which was detected by electron spin resonance spectrometry. Furthermore, Camellia extract increased the protein expressions and activity of cellular antioxidant enzymes, such as superoxide dismutase, catalase and glutathione peroxidase. These results suggest that Camellia extract exhibits antioxidant properties by scavenging ROS and enhancing antioxidant enzymes. Camellia extract contained quercetin, quercetin-3-O-glucoside, quercitrin and kaempferol, which are antioxidant compounds.
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Torres S, Ferraudi G, Aguirre MJ, Isaacs M, Matsuhiro B, Chandía NP, Mendoza L. On the Ligand-to-Metal Charge-Transfer Photochemistry of the Copper(II) Complexes of Quercetin and Rutin. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201000227] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Taguchi N, Uemura N, Goto Y, Sakura M, Hara K, Niwa M, Iida M, Yanagishita T, Watanabe D, Kato M. Antioxidative effects of cherry leaves extract on tert-butyl hydroperoxide-mediated cytotoxicity through regulation of thioredoxin-2 protein expression levels. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2011; 74:1240-1247. [PMID: 21797775 DOI: 10.1080/15287394.2011.570229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Components of cherry trees have been used as traditional herbal remedies for various diseases. These components are known to possess antioxidative effects. However, the mechanisms underlying cherry tree component-mediated antioxidative effects remain largely unknown. This study focused on cherry leaves extract (CLE) and examined the mechanism underlying the effect of CLE on tert-butyl hydroperoxide (t-BOOH)-induced melanocytic cell death with DNA damage. Interestingly, CLE prevented t-BOOH-induced cell death with reduction in DNA damage, p38 kinase activation, and reactive oxygen species (ROS) production. CLE-mediated suppression of cell death with reduction of DNA damage, p38 kinase activity and ROS production was prevented by a thioredoxin (Trx) system inhibitor but not by a glutathione (GSH) system inhibitor. Finally, data showed that CLE prevented t-BOOH-induced reduction of Trx2 but not Trx1 and Trx reductases (TrxR1 and TrxR2) protein expression. Thus, our results suggest that CLE prevents t-BOOH-induced reduction in Trx2 expression, promotion of ROS production, activation of p38 kinase, and increase in DNA damage and that it protects against cell death.
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Affiliation(s)
- Nobuhiko Taguchi
- Units of Environmental Health Sciences, Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai-shi, Aichi, Japan
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Shin TY, Park SB, Yoo JS, Kim IK, Lee HS, Kwon TK, Kim MK, Kim JC, Kim SH. Anti-allergic inflammatory activity of the fruit of Prunus persica: role of calcium and NF-kappaB. Food Chem Toxicol 2010; 48:2797-802. [PMID: 20633593 DOI: 10.1016/j.fct.2010.07.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 06/30/2010] [Accepted: 07/07/2010] [Indexed: 02/04/2023]
Abstract
Mast cell-mediated allergic symptoms are involved in many diseases, such as asthma and sinusitis. In this study, we investigated the effect of ethanol extract of fruits of Prunus persica (L) Batsch (FPP) on the mast cell-mediated allergic inflammation and studied the possible mechanism of action. FPP dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and immunoglobulin E-mediated local allergic reactions. Histamine releasing from mast cells was reduced by FPP, which was mediated by modulation of intracellular calcium. In addition, FPP attenuated the phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI)-stimulated expression and secretion of pro-inflammatory cytokines in human mast cells. The inhibitory effect of FPP on pro-inflammatory cytokines was nuclear factor (NF)-kappaB dependent. Our findings provide evidence that FPP inhibits mast cell-derived allergic inflammation and involvement of calcium and NF-kappaB in these effects.
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Affiliation(s)
- Tae-Yong Shin
- College of Pharmacy, Woosuk University, Jeonju 565-701, Republic of Korea
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42
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Ni Y, Wang S, Kokot S. Spectrometric study of the interaction between Alpinetin and bovine serum albumin using chemometrics approaches. Anal Chim Acta 2010; 663:139-46. [DOI: 10.1016/j.aca.2010.01.053] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Revised: 01/26/2010] [Accepted: 01/27/2010] [Indexed: 11/25/2022]
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43
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Jayaraman J, Veerappan M, Namasivayam N. Potential beneficial effect of naringenin on lipid peroxidation and antioxidant status in rats with ethanol-induced hepatotoxicity. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.10.0016] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Abstract
Objectives
The aim was to study the effect of naringenin, a biologically active compound, on tissue antioxidant status and lipid peroxidation in ethanol-induced hepatotoxicity in rats.
Methods
Rats were divided into four groups: Groups 1 and 2 received isocaloric glucose and 0.5% carboxymethyl cellulose; groups 3 and 4 received 20% ethanol equivalent to 6 g/kg daily for 60 days. In addition, groups 2 and 4 were given naringenin (50 mg/kg) daily for the last 30 days of the experiment.
Key findings
The results showed significantly elevated levels of serum aspartate and alanine transaminases, γ-glutamyl transpeptidase, tissue thiobarbituric acid reactive substances, conjugated dienes, lipid hydroperoxides and protein carbonyl content, and significantly lowered activities/levels of antioxidants such as superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glutathione-S-transferase, reduced glutathione and vitamins C and E in ethanol-treated rats compared with control rats. Administration of naringenin to rats with ethanol-induced liver injury significantly decreased the levels of serum aspartate and alanine transaminases, γ-glutamyl transpeptidase, tissue thiobarbituric acid reactive substances, conjugated dienes, lipid hydroperoxides and protein carbonyl content and significantly elevated the activities of superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and glutathione-S-transferase, and the levels of reduced glutathione and vitamins C and E in the tissues compared with unsupplemented ethanol-treated rats. Histological changes observed in the liver correlated with the biochemical findings.
Conclusions
Taken together these findings suggest that naringenin has a therapeutic potential in the abatement of ethanol-induced hepatotoxicity.
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Affiliation(s)
- Jayachitra Jayaraman
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, Tamilnadu, India
| | - Muniappan Veerappan
- Division of Anatomy, Faculty of Medicine, Annamalai University, Annamalainagar, Tamilnadu, India
| | - Nalini Namasivayam
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, Tamilnadu, India
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Abstract
Peroxynitrite (ONOO-) is a reactive oxidant formed from superoxide (*O2(-)) and nitric oxide (*NO), that can oxidize several cellular components, including essential protein, non-protein thiols, DNA, low-density lipoproteins (LDL), and membrane phospholipids. ONOO- has contributed to the pathogenesis of diseases such as stroke, heart disease, Alzheimer's disease, and atherosclerosis. Because of the lack of endogenous enzymes to thwart ONOO- activation, developing a specific ONOO- scavenger is remarkably important. In this study, the ability of hesperetin (3',5,7-trihydroxy-4-methoxyflavanone) to scavenge ONOO- and to protect cells against ONOO- and ROS was investigated. The data gained show that hesperetin can efficiently scavenge authentic ONOO- . In spectrophotometric analysis, the data revealed that hesperetin led to declined ONOO- -mediated nitration of tyrosine through electron donation. Hesperetin exhibited significant inhibition on the nitration of bovine serum albumin (BSA) by ONOO- in a dose-dependent manner. Hesperetin also manifested cytoprotection from cell damage induced by ONOO- and ROS. The present study suggests that hesperetin is a powerful ONOO- scavenger and promotes cellular defense activity in the protection against ONOO- involved diseases.
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Affiliation(s)
- Ji Young Kim
- College of Pharmacy, Aging Tissue Bank, Pusan National University, Gumjung-gu, Busan 609-735, South Korea
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45
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Flavonoids as anti-inflammatory agents: implications in cancer and cardiovascular disease. Inflamm Res 2009; 58:537-52. [PMID: 19381780 DOI: 10.1007/s00011-009-0037-3] [Citation(s) in RCA: 579] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 01/09/2009] [Accepted: 03/16/2009] [Indexed: 12/11/2022] Open
Abstract
Chronic inflammation is being shown to be increasingly involved in the onset and development of several pathological disturbances such as arteriosclerosis, obesity, diabetes, neurodegenerative diseases and even cancer. Treatment for chronic inflammatory disorders has not been solved, and there is an urgent need to find new and safe anti-inflammatory compounds. Flavonoids belong to a group of natural substances occurring normally in the diet that exhibit a variety of beneficial effects on health. The anti-inflammatory properties of flavonoids have been studied recently, in order to establish and characterize their potential utility as therapeutic agents in the treatment of inflammatory diseases. Several mechanisms of action have been proposed to explain in vivo flavonoid anti-inflammatory actions, such as antioxidant activity, inhibition of eicosanoid generating enzymes or the modulation of the production of proinflammatory molecules. Recent studies have also shown that some flavonoids are modulators of proinflammatory gene expression, thus leading to the attenuation of the inflammatory response. However, much work remains to be done in order to achieve definitive conclusions about their potential usefulness. This review summarizes the known mechanisms involved in the anti-inflammatory activity of flavonoids and the implications of these effects on the protection against cancer and cardiovascular disease.
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46
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Wu XQ, Zhu WJ, Lü ZR, Xia Y, Yang JM, Zou F, Wang XY. The effect of rutin on arginine kinase: Inhibition kinetics and thermodynamics merging with docking simulation. Int J Biol Macromol 2009; 44:149-55. [DOI: 10.1016/j.ijbiomac.2008.11.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2008] [Revised: 11/15/2008] [Accepted: 11/17/2008] [Indexed: 11/25/2022]
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El-Sayed ESM, Abo-Salem OM, Abd-Ellah MF, Abd-Alla GM. Hesperidin, an antioxidant flavonoid, prevents acrylonitrile-induced oxidative stress in rat brain. J Biochem Mol Toxicol 2008; 22:268-73. [PMID: 18752313 DOI: 10.1002/jbt.20237] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Acrylonitrile (ACN) is a volatile, toxic liquid used as a monomer in the manufacture of synthetic rubber, styrene plastics, acrylic fiber, and adhesives. ACN is a potent neurotoxin. A role for free radical mediated lipid peroxidation in the toxicity of ACN has been suggested. We examined the ability of hesperidin, an antioxidant flavonoid, to attenuate ACN-induced alterations in lipid peroxidation in rat brains. The daily oral administration of ACN to male albino rats in a dose of 50 mg/kg bwt for a period of 28 days produced a significant elevation in brain lipid peroxides measured as malondialdehyde (MDA) amounting to 107%, accompanied by a marked decrease in brain-reduced glutathione (GSH) content reaching 63%. In addition, ACN administration resulted in significant reductions in the enzymatic antioxidant parameters of brain; superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione-S-transferase (GST) recording 43%, 64%, 52%, and 43%, respectively. On the other hand, pretreatment with hesperidin and its coadministration with ACN once daily in a dose of 200 mg/kg bwt i.p. for 28 days ameliorated ACN-induced alterations in brain lipid peroxidation. These results suggest that hesperidin may have a beneficial role against ACN-induced oxidative stress in the brain; an effect that is mainly attributed to the antioxidant property of hesperidin.
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Affiliation(s)
- El-Sayed M El-Sayed
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.
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48
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Shimmyo Y, Kihara T, Akaike A, Niidome T, Sugimoto H. Three distinct neuroprotective functions of myricetin against glutamate-induced neuronal cell death: involvement of direct inhibition of caspase-3. J Neurosci Res 2008; 86:1836-45. [PMID: 18265412 DOI: 10.1002/jnr.21629] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The excitatory neurotransmitter glutamate can accumulate in the brain and is thought to be involved in the etiology of many neurodegenerative disorders, including ischemia and Alzheimer disease. Therefore, it is important to search for compounds that reduce glutamate neurotoxicity. This glutamate-mediated excitotoxicity is caused by intracellular Ca2+ overload via the N-methyl-D-aspartate receptor NMDAR), reactive oxygen species (ROS) generation, and caspase-3 activation. Here we show that the natural flavonoid myricetin inhibited glutamate-induced excitotoxicity and protected neurons by multiple, distinct pathways. First, myricetin affected modulation of the NMDAR by phosphorylation, causing a subsequent reduction in glutamate-induced intracellular Ca2+ overload. Second, myricetin inhibited the ROS production caused by glutamate. Finally, glutamate-induced activation of caspase-3 was reduced by myricetin treatment. Moreover, myricetin directly interacted with the active site of caspase-3 via three hydrogen bonds and inhibited its activity. We conclude that myricetin inhibited glutamate-induced neuronal toxicity by multiple biochemical pathways. These results show that myricetin is a potent antineurodegenerative compound and may contribute to the discovery of a drug with which to combat neurodegeneration.
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Affiliation(s)
- Yoshiari Shimmyo
- Department of Neuroscience for Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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49
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Spada PD, de Souza GGN, Bortolini GV, Henriques JA, Salvador M. Antioxidant, Mutagenic, and Antimutagenic Activity of Frozen Fruits. J Med Food 2008; 11:144-51. [DOI: 10.1089/jmf.2007.598] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Patrícia D.S. Spada
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | | | | | - João A.P. Henriques
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
- Universidade Luterana do Brasil, Canoas, Rio Grande do Sul, Brazil
| | - Mirian Salvador
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
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50
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Pulse radiolysis study of the formation and the reactivity of baicalin radical anion, and in comparison with rutin, quercetin and acyrlate ester radical anions in ethanol. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2006.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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