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Kwizera E, Wampande EM, Kato CD, Mujinya P, Wandera A, Bwambale F, Mpumbya JR, Siida R, Ssekatawa K. Hepatoprotective effect of methanol fruit extract of Punica granatum L in highly active antiretroviral therapy-induced toxicity in Wistar rats. Drug Chem Toxicol 2024; 47:243-251. [PMID: 38303124 DOI: 10.1080/01480545.2023.2298891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 11/01/2023] [Indexed: 02/03/2024]
Abstract
Prolonged use of Highly Active Antiretroviral Therapy (HAART) has been linked to toxicity, particularly hepatotoxicity. There are few effective drugs for HAART patients that promote hepatic cell regeneration and prevent liver injury. Therefore, the purpose of this study was to investigate the hepato-protective activity of Methanol fruit extract of Punica granatum (MFEPG) in HAART-administered rats. Thirty rats weighing between 150-200 g were randomly divided into six groups and each group comprised of five rats. Distilled water was given to the rats in group one. Only HAART was given to the rats in group two. MFEPG at doses of 100 and 400 mg/kg was given to the rats in groups three and four. MFEPG dosages of 100 and 400 mg/kg along with HAART were given to the rats in groups five and six, respectively. All treatments were via oral gavage daily for 40 days. Under halothane anesthesia, all rats were sacrificed on day 41. Liver tissues were utilized for lipid peroxidation marker; Malondialdehyde (MDA), antioxidant enzymes; Superoxide dismutase (SOD) and Catalase (CAT) and histological evaluation, while blood samples were examined for biochemical parameters (AST, ALT, ALP, Total cholesterol, Total protein, and Albumin). The HAART-treated group exhibited a significantly higher amount of the lipid peroxidation end product; MDA, and significantly lower levels of antioxidant enzymes; SOD, and CAT. Liver enzymes and total cholesterol were significantly increased with a significant reduction in Total protein and Albumin levels in the HAART-treated group. Conversely, the liver function biomarkers were returned to normal levels in the HAART and MFEPG-treated groups. Histopathological studies revealed that when HAART-exposed rats were treated with MFEPG, both the biochemical and histological results significantly improved. Thus, the antioxidant activity of MFEPG provides protection against HAART-induced liver oxidative damage. More research is needed to determine the safety of using MFEPG in humans.
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Affiliation(s)
- Eliah Kwizera
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Eddie M Wampande
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Charles D Kato
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Pastori Mujinya
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Allan Wandera
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Fred Bwambale
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Jackie Rachael Mpumbya
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Robert Siida
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Kenneth Ssekatawa
- Department of Science Technical and Vocational Education, Makerere University, Kampala, Uganda
- Africa Center Excellence in Materials Product Development and Nanotechnology (MAPRONANO ACE), College of Engineering Design Art and Technology, Makerere University, Kampala, Uganda
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Kwizera E, Ssekatawa K, Aja PM, Miruka CO, Wandera A, Mpumbya JR, Siida R, Shehu D, Salihu TS. Methanol Crude Peel Extract of P. granatum Prevents Oxidative Damage in Kidneys of Rats Exposed to Highly Active Antiretroviral Therapy. J Exp Pharmacol 2024; 16:1-11. [PMID: 38213945 PMCID: PMC10778224 DOI: 10.2147/jep.s438368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/17/2023] [Indexed: 01/13/2024] Open
Abstract
Background Highly Active Antiretroviral Therapy (HAART) has been linked to oxidative damage to kidney cells leading to renal disease in people living with HIV/AIDS on HAART treatment. The toxic effects of HAART affect the patients' quality of life leading to poor adherence to their regimen. Therefore, the purpose of this study was to investigate the nephron-protective activity of methanol crude peel extract of Punica granatum (MPEPG) in HAART-administered Wistar rats. Methods Thirty male albino Wistar rats weighing between 180-200g were randomly divided into six groups of five rats each. Group one served as normal control and was given distilled water only. Group two serves as a negative control and was given HAART at a dosage of 64 mg/kg. Groups 3 and 4 were given 100 and 400 mg/kg of MPEPG, respectively, while groups 5 and 6 were given MPEPG dosages of 100 and 400 mg/kg along with HAART, respectively, for 40 days. The rats were sacrificed under halothane anaesthesia, and the kidneys were removed for histological evaluation, while blood samples were analyzed for biochemical parameters. Results In the HAART (TLD) treated group, there was a significantly high amount of MDA and a lower level of the antioxidant enzymes SOD and CAT. Biochemical analysis revealed that animals treated with HAART (TLD) had significantly higher levels of urea and creatinine, which are biomarkers of kidney damage than the normal control animals. In contrast, all the kidney function markers were returned to normal levels in the HAART-treated group after administration of methanol crude peel extract of P. granatum. The kidney tissues of animals given HAART had considerable structural damage as revealed by histopathological studies. When HAART-exposed rats were treated with MPEPG, both the biochemical and histological results significantly improved. Conclusion Methanol crude peel extract of P. granatum provided effective protection against kidney oxidative injury brought on by HAART because of its anti-oxidant and free radical scavenging properties.
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Affiliation(s)
- Eliah Kwizera
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Kenneth Ssekatawa
- Department of Science, Technical and Vocational Education, Makerere University, Kampala, Uganda
- Africa Center Excellence in Materials Product Development and Nanotechnology (MAPRONANO ACE), Makerere University, Kampala, Uganda
| | - Patrick Maduabuchi Aja
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Conrad Ondieki Miruka
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Allan Wandera
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Jackie Rachael Mpumbya
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Robert Siida
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Dayyabu Shehu
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Tijjani Shinkafi Salihu
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
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Janetzki JL, Pratt NL, Ward MB, Sykes MJ. Application of an Integrative Drug Safety Model for Detection of Adverse Drug Events Associated With Inhibition of Glutathione Peroxidase 1 in Chronic Obstructive Pulmonary Disease. Pharm Res 2023; 40:1553-1568. [PMID: 37173537 PMCID: PMC10338407 DOI: 10.1007/s11095-023-03516-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/07/2023] [Indexed: 05/15/2023]
Abstract
BACKGROUND Chronic Obstructive Pulmonary Disease is characterised by declining lung function and a greater oxidative stress burden due to reduced activity of antioxidant enzymes such as Glutathione Peroxidase 1. OBJECTIVES The extent to which drugs may contribute to this compromised activity is largely unknown. An integrative drug safety model explores inhibition of Glutathione Peroxidase 1 by drugs and their association with chronic obstructive pulmonary disease adverse drug events. METHODS In silico molecular modelling approaches were utilised to predict the interactions that drugs have within the active site of Glutathione Peroxidase 1 in both human and bovine models. Similarities of chemical features between approved drugs and the known inhibitor tiopronin were also investigated. Subsequently the Food and Drug Administration Adverse Event System was searched to uncover adverse drug event signals associated with chronic obstructive pulmonary disease. RESULTS Statistical and molecular modelling analyses confirmed that the use of several registered drugs, including acetylsalicylic acid and atenolol may be associated with inhibition of Glutathione Peroxidase 1 and chronic obstructive pulmonary disease. CONCLUSION The integration of molecular modelling and pharmacoepidemological data has the potential to advance drug safety science. Ongoing review of medication use and further pharmacoepidemiological and biological analyses are warranted to ensure appropriate use is recommended.
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Affiliation(s)
- Jack L. Janetzki
- UniSA: Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001 Australia
- Quality Use of Medicines and Pharmacy Research Centre, Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, SA 5001 Australia
| | - Nicole L. Pratt
- Quality Use of Medicines and Pharmacy Research Centre, Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, SA 5001 Australia
| | - Michael B. Ward
- UniSA: Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001 Australia
- Quality Use of Medicines and Pharmacy Research Centre, Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, SA 5001 Australia
| | - Matthew J. Sykes
- UniSA: Clinical and Health Sciences, University of South Australia, GPO Box 2471, Adelaide, South Australia 5001 Australia
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Zhu H, Gao M, Sun W, Liu H, Xu S, Li X. ROS/ER stress contributes to trimethyltin chloride-mediated hepatotoxicity; Tea polyphenols alleviate apoptosis and immunosuppression. Comp Biochem Physiol C Toxicol Pharmacol 2023; 263:109505. [PMID: 36370998 DOI: 10.1016/j.cbpc.2022.109505] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/11/2022]
Abstract
Trimethyltin chloride (TMT) is an organotin-based contaminant present in the water environment that poses a great threat to aquatic organisms and humans. The liver is the detoxification organ of the body and TMT exposure accumulates in the liver. Tea polyphenol (TP) is a natural antioxidant extracted from tea leaves and has been widely used as a food and feed additive. To investigate the mechanism of toxicity caused by TMT exposure on grass carp hepatocytes (L8824 cells) and the mitigating effect of TP, we established a hepatocyte model of TMT toxicity and/or TP treatment. L8824 cells were treated with 0.5 μM of TMT and/or 4 μg/mL of TP for 24 h and assayed for relevant indices. The results showed that TMT exposure caused oxidative stress, resulting in increased intracellular ROS content, resulting in intracellular ROS accumulation and increased MDA content, and inhibiting the activities of T-AOC, SOD, CAT, and GSH. Meanwhile, TMT exposure activated the endoplasmic reticulum apoptotic signaling pathway, resulting in abnormal expression of GRP78, ATF-6, IRE1, PERK, Caspase-3 and Caspase-12. In addition, TMT exposure also led to up-regulation of cytokines IL-1β, IL-6, TNF-α, and decreased expression of IL-2, IFN-γ, and antimicrobial peptides Hepcidin, β-defensin, and LEAP2. However, the addition of TP could mitigate the above changes. In conclusion, TP can alleviate TMT exposure-mediated hepatotoxicity by inhibiting ROS/ER stress in L8824 cells. In addition, this trial enriches the cytotoxicity study of TMT and provides a new theoretical basis for the use of TP as a mitigating agent for TMT.
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Affiliation(s)
- Huijun Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Meichen Gao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Wenying Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Huanyi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China.
| | - Xiaojing Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, PR China.
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Zamani E, Ahmadi Shad A, Fatemi H, Mahboubi S, Motavallian A, Evazalipour M. Assessment of Protective Effects of Carvacrol on Haloperidol-Induced Oxidative Stress and Genotoxicity in Human Peripheral Blood Lymphocytes. J Toxicol 2022; 2022:9565881. [PMID: 36329925 PMCID: PMC9626238 DOI: 10.1155/2022/9565881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/14/2022] [Indexed: 08/24/2023] Open
Abstract
Haloperidol is a first-generation antipsychotic drug that has several indications in a wide range of mental conditions. The extensive prescription of haloperidol is correlated with some less-known adverse effects such as genotoxicity. Carvacrol is a monoterpenoid mainly found in oregano and thyme. It has the potential to scavenge free radicals in addition to increasing antioxidant defense enzyme activities and glutathione levels. In this study, we attempted to explore the possible potential of haloperidol in inducing genotoxicity in human peripheral lymphocytes as well as the protective role of carvacrol against this effect. The lymphocytes were divided into separate groups as follows: control group (cosolvent and NS); carvacrol group (5 μM); haloperidol group (25, 50, and 100 ng/ml); haloperidol (25, 50, and 100 ng/ml) + carvacrol (5 μM); positive control (0.8 μg/ml Cisplatin). After 24 hours of treatment, we conducted a cytokinesis-Block micronucleus test and an alkaline comet assay in order to determine genetic damage. Additionally, we measured glutathione and MDA levels as the biomarkers associated with oxidative stress. Significant increases in the levels of genotoxicity biomarkers (micronucleus frequency, DNA percentage in tail and tail moment) were observed in haloperidol-treated cells. The result of our oxidative stress tests also demonstrated that haloperidol had the potential to induce oxidative stress via reducing the levels of glutathione and increasing lipid peroxidation. Treatment with carvacrol significantly decreased the genotoxic events. It can be presumed that the induction of oxidative stress by haloperidol is the critical event associated with haloperidol-mediated genotoxicity. Therefore, using carvacrol as a natural antioxidant protected human lymphocytes against haloperidol genetic damage.
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Affiliation(s)
- Ehsan Zamani
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Alireza Ahmadi Shad
- Student Research Committee, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Hediye Fatemi
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
- Student Research Committee, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Saba Mahboubi
- Student Research Committee, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Azadeh Motavallian
- Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Mehdi Evazalipour
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
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Abdul-Hamid M, Abdel-Reheim ES, Hegazy W, Allam A, Othman SI, Alwaele MA, Abdel-Kawi SH. Effect of gervital in attenuating hepatotoxicity caused by methotrexate or azathioprine in adult albino rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:46788-46801. [PMID: 35169948 DOI: 10.1007/s11356-022-18903-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Methotrexate (MTX) and azathioprine (AZA) are chemotherapeutic, antimetabolic, and immunosuppressive agents with substantial risks such as oxidative lesions to the liver. This study examined the effect of grape seed extract (GSE; gervital) in attenuating hepatotoxicity caused by MTX or AZA treatment. Rats were divided into six groups (six rats per group): Group I, normal control group; Group II, GSE (150 mg/kg/day); Group III, MTX (8 mg/kg/week); Group IV, AZA (15 mg/kg/day); Group V, GSE (150 mg/kg/day) + MTX (8 mg/kg/week); and Group VI, GSE (150 mg/kg/day) + AZA (15 mg/kg/day). After 35-day experimental period, all rats were sacrificed and blood was collected for biochemical study and hemoglobin (Hb) assessment. The liver was weighed and triaged for histological, ultrastructural, and biochemical studies. MTX and AZA treatment decreased Hb levels, increased relative liver weight, increased the activity of glutamate pyruvate transaminase (ALT) and glutamate oxaloacetate transaminase (AST) aminotransferase (ALT) and aspartate aminotransferase (AST) values, and displayed histopathological and ultrastructural alterations. These changes included the disorganization of hepatocytes, pyknosis, karyolysis of some nuclei, and mononuclear leukocytic infiltration. The liver with significant oxidative stress (OS) showed decreased reduced glutathione (GSH), catalase (CAT), and superoxide dismutase (SOD) and increased malondialdehyde (MDA) levels. In contrast, GSE administration ameliorated ALT, AST, and all histopathological and ultrastructural changes. GSE treatment also reduced MDA levels but increased the antioxidant parameters. In conclusion, it was concluded that GSE supplementation could be considered as a promising antioxidant in reducing OS, histopathological and ultrastructural alterations induced by MTX and AZA.
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Affiliation(s)
- Manal Abdul-Hamid
- Histology and Cell Biology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni Suef, Egypt.
| | - Eman Salah Abdel-Reheim
- Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni Suef, Egypt
| | - Walaa Hegazy
- Basic Science Department, Faculty of Physical Therapy, Nahda University, Beni Suef, Egypt
| | - Ahmed Allam
- Developmental Biology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni Suef, Egypt
| | - Sarah I Othman
- Biology Department, Faculty of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Maha Abdulla Alwaele
- Biology Department, Faculty of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Samraa Hussein Abdel-Kawi
- Medical Histology & Cell Biology Department, Faculty of Medicine, Beni-Suef University, Beni Suef, Egypt
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Antioxidative, Anti-Inflammatory, Anti-Obesogenic, and Antidiabetic Properties of Tea Polyphenols-The Positive Impact of Regular Tea Consumption as an Element of Prophylaxis and Pharmacotherapy Support in Endometrial Cancer. Int J Mol Sci 2022; 23:ijms23126703. [PMID: 35743146 PMCID: PMC9224362 DOI: 10.3390/ijms23126703] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 02/01/2023] Open
Abstract
Endometrial cancer (EC) is second only to cervical carcinoma among the most commonly diagnosed malignant tumours of the female reproductive system. The available literature provides evidence for the involvement of 32 genes in the hereditary incidence of EC. The physiological markers of EC and coexisting diet-dependent maladies include antioxidative system disorders but also progressing inflammation; hence, the main forms of prophylaxis and pharmacotherapy ought to include a diet rich in substances aiding the organism’s response to this type of disorder, with a particular focus on ones suitable for lifelong consumption. Tea polyphenols satisfy those requirements due to their proven antioxidative, anti-inflammatory, anti-obesogenic, and antidiabetic properties. Practitioners ought to consider promoting tea consumption among individuals genetically predisposed for EC, particularly given its low cost, accessibility, confirmed health benefits, and above all, suitability for long-term consumption regardless of the patient’s age. The aim of this paper is to analyse the potential usability of tea as an element of prophylaxis and pharmacotherapy support in EC patients. The analysis is based on information available from worldwide literature published in the last 15 years.
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Glucocorticoids, Cyclosporine, Azathioprine, Chlorambucil, and Mycophenolate in Dogs and Cats. Vet Clin North Am Small Anim Pract 2022; 52:797-817. [DOI: 10.1016/j.cvsm.2022.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Wang D, Wang T, Li Z, Guo Y, Granato D. Green Tea Polyphenols Upregulate the Nrf2 Signaling Pathway and Suppress Oxidative Stress and Inflammation Markers in D-Galactose-Induced Liver Aging in Mice. Front Nutr 2022; 9:836112. [PMID: 35284456 PMCID: PMC8904921 DOI: 10.3389/fnut.2022.836112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
The beneficial effects of green tea polyphenols (GTPs) on D-galactose (D-Gal)-induced liver aging in male Kunming mice were investigated. For this purpose, 40 adult male Kunming mice were divided into four groups. All animals, except for the normal control and GTPs control, were intraperitoneally injected with D-galactose (D-Gal; 300 mg/kg/day for 5 days a week) for 12 consecutive weeks, and the D-Gal-treated mice were allowed free access to 0.05% GTPs (w/w) diet or normal diet for 12 consecutive weeks. Results showed that GTP administration improved the liver index and decreased transaminases and total bilirubin levels. Furthermore, GTPs significantly increased hepatic glutathione and total antioxidant levels, and the activities of superoxide dismutase, catalase, and glutathione S-transferase (GST). Furthermore, GTPs downregulated 8-hydroxy-2-deoxyguanosine, advanced glycation end products, and hepatic oxidative stress markers, such as malondialdehyde and nitric oxide. Additionally, GTPs abrogated dysregulation in hepatic Kelch-like ECH-associated protein 1 and nuclear factor erythroid 2-related factor 2 (Nrf2) and its downstream target gene expression [heme oxygenase 1, NAD(P)H:quinone oxidoreductase 1, and GST] and inhibited tumor necrosis factor-α, transforming growth factor-β, and interleukin (IL)-1β and IL-6 in the liver of treated mice. Finally, GTPs effectively attenuated D-Gal-induced edema, vacuole formation, and inflammatory cell infiltration. In conclusion, GTPs showed antioxidant and anti-inflammatory properties in D-Gal-induced aging mice, and may be considered a natural alternative to the effects of hepatic aging.
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Affiliation(s)
- Dongxu Wang
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
- *Correspondence: Dongxu Wang
| | - Taotao Wang
- Department of Clinical Nutrition, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhanming Li
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yuanxin Guo
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Daniel Granato
- Department of Biological Sciences, Faculty of Science and Engineering, University of Limerick, Limerick, Ireland
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Truong VL, Jeong WS. Cellular Defensive Mechanisms of Tea Polyphenols: Structure-Activity Relationship. Int J Mol Sci 2021; 22:ijms22179109. [PMID: 34502017 PMCID: PMC8430757 DOI: 10.3390/ijms22179109] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/13/2022] Open
Abstract
Tea is particularly rich in polyphenols, including catechins and theaflavins, thearubigins, flavonols, and phenolic acids, which are believed to contribute to the health benefits of tea. The health-promoting effects of tea polyphenols are believed to be related to their cellular defensive properties. This review is intended to briefly summarize the relationship between the chemical structures of tea polyphenols and their biological activities. Tea polyphenols appear as direct antioxidants by scavenging reactive oxygen/nitrogen species; chelating transition metals; and inhibiting lipid, protein, and DNA oxidations. They also act directly by suppressing “pro-oxidant” enzymes, inducing endogenous antioxidants, and cooperating with vitamins. Moreover, tea polyphenols regulate cellular signaling transduction pathways, importantly contributing to the prevention of chronic diseases and the promotion of physiological functions. Apparently, the features in the chemical structures of tea polyphenols are closely associated with their antioxidant potentials.
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Retrospecting the Antioxidant Activity of Japanese Matcha Green Tea–Lack of Enthusiasm? APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11115087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Matcha tea is a traditional Japanese tea that is said to possess ten times higher bioactive components and polyphenols than that of conventional green teas. Matcha is remotely popular among the global community and meagerly researched and infamous among the scientific population. It is the powdered form of green tea leaves that are directly suspended in hot water and drunk without filtration. Matcha is said to be one of the richest antioxidant sources naturally available. This review summarizes the available research publications related to matcha and compares the research accomplishments of green tea and matcha researchers. The fact that green tea is backed up by 35,000 publications while matcha has merely 54 publications to its credit is highlighted in this review for the first time. The future of matcha for tapping its enormous antioxidant activity and health potentials remains connected to the volume of scientific awareness and enhanced research attention in this area. If green tea has so much to offer towards human health and welfare, there is certainly room for more benefits from matcha, which is yet to be disclosed. As public awareness cannot be won without scientific approval, this review seeks that this gap may be bridged using essential knowledge gained from matcha applications and allied research.
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Ramez AM, Elmahallawy EK, Elshopakey GE, Saleh AA, Moustafa SM, Al-Brakati A, Abdo W, El-Shewehy DMM. Hepatosplenic Protective Actions of Spirulina platensis and Matcha Green Tea Against Schistosoma mansoni Infection in Mice via Antioxidative and Anti-inflammatory Mechanisms. Front Vet Sci 2021; 8:650531. [PMID: 33996977 PMCID: PMC8119902 DOI: 10.3389/fvets.2021.650531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/23/2021] [Indexed: 12/28/2022] Open
Abstract
Schistosomiasis, a major parasitic illness, has high morbidity and negative financial effects in subtropical and tropical countries, including Egypt. The present study investigated the therapeutic effects of Spirulina platensis (SP) and matcha green tea (MGT) in Schistosoma mansoni-infected mice combined with tracing their possible antioxidant and anti-inflammatory impacts and their protective potency. A total of 60 Swiss albino mice were randomly allocated into six groups (n = 10): control group (CNT, received normal saline); SP–MGT group [received oral SP (3 g/kg bodyweight/day) plus MGT (3 g/kg bodyweight/day)]; S. mansoni group (infected with S. mansoni cercariae, 100 ± 10/mouse, using the tail immersion method); SP-infected group (infected with S. mansoni and received oral SP); MGT-infected group (received oral MGT after S. mansoni infection); and SP–MGT-infected group (received combined treatment of SP and MGT after S. mansoni infection). Treatment with SP and MGT started 4 weeks after S. mansoni infection and ended 10 weeks after. SP and MGT treatment (SP-infected and MGT-infected groups) and the combined treatment (SP–MGT-infected group) minimized the hepatic damage induced by S. mansoni; circulating alanine aminotransferase and aspartate transaminase decreased, and total protein, albumin, and globulin serum levels increased. The serum level of malondialdehyde significantly declined, and catalase, glutathione peroxidase, superoxide dismutase, and total antioxidant capacity increased in SP-infected, MGT-infected, and SP–MGT-infected groups compared with the infected group. Co-administration of SP and MGT reduced serum cytokine levels (tumor necrosis factor-alpha, interferon-gamma, and interleukin-13) and increased interleukin-10 levels after S. mansoni infection compared with the infected group. Moreover, treatment with SP and/or MGT decreased the number of granulomas in hepatic and splenic tissues compared with the infected group. Collectively, our results suggest that combined SP and MGT treatment is effective for S. mansoni infection. Liver and spleen tissue alterations were improved, the antioxidant systems were stimulated, and the inflammatory response was suppressed. Further research is recommended to investigate the mechanisms of the combined SP and MGT treatment effects to facilitate the development of novel therapies against this disease.
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Affiliation(s)
- Amany M Ramez
- Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ehab Kotb Elmahallawy
- Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag, Egypt
| | - Gehad E Elshopakey
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Amira A Saleh
- Department of Medical Parasitology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Samar M Moustafa
- Department of Zoonses, Faculty of Veterinary Medicine, Benha University, Benha, Egypt
| | - Ashraf Al-Brakati
- Department of Human Anatomy, College of Medicine, Taif University, Taif, Saudi Arabia
| | - Walied Abdo
- Department of Pathology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt.,Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Dina M M El-Shewehy
- Zoology Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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13
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Lima Júnior JPD, Franco RR, Saraiva AL, Moraes IB, Espindola FS. Anacardium humile St. Hil as a novel source of antioxidant, antiglycation and α-amylase inhibitors molecules with potential for management of oxidative stress and diabetes. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113667. [PMID: 33301920 DOI: 10.1016/j.jep.2020.113667] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The substantial increase in diabetes cases worldwide has been a major public health problem, and the use of medicinal plants can be considered an interesting alternative to control the disease and its complications. Anacardium humile St. Hill. (Anacardiaceae) is a typical plant from the Brazilian savanna, popularly known for its antidiarrheal, expectorant, antidiabetic and anti-inflammatory properties, however, few studies have fully described its biological properties. This study aimed to investigate in vitro and ex vivo the antioxidant and antiglycation potential of A. humile ethanolic extract, its organic fractions and three isolated molecules (quercetin, catechin and gallic acid), their capacity to inhibit the glycolytic enzyme α-amylase, as well as their cytotoxic effects against RAW264.7 macrophages. MATERIAL AND METHODS The ethanolic extract of A. humile, its organic fractions and three isolated molecules (catechin, quercetin and gallic acid) were tested for their antioxidant (ORAC, FRAP and DPPH) and antiglycation (BSA/Fructose, BSA/Methylglyoxal, Arginine/Methylglyoxal and Lysine/Methylglyoxal) capacities, and also for its potential to inhibit the enzyme α-amylase. Additionally, bioactive compounds present in the A. humile leaves fractions were elucidated by an HPLC-ESIMS/MS analysis. RESULTS The analysis showed relevant antioxidant activity of DCM (1264.85 ± 76.90 μM Trolox eq/g ORAC; 216.71 ± 1.04 μM Trolox eq/g FRAP and 3.03 ± 0.08 IC50 μg/mL IC50 DPPH) and EtOAc (1300.11 ± 33.04 ORAC, 236.21 ± 23.86 FRAP and 3.03 ± 0.14 μg/mL IC50 DPPH) fractions and also of the isolated molecules, mainly gallic acid (1291.19 ± 8.41 μM Trolox eq/g ORAC, 1103.52 ± 31.48 μM Trolox eq/g FRAP and 0.78 ± 0.11 μg/mL IC50 DPPH). Concerning the antiglycation activity, all samples inhibited over 88% in the BSA-FRU method. In the BSA-MGO and ARG-MGO methods, the Hex, DCM, EtOAc fractions and the isolated molecule catechin stood out. However, in the LYS-MGO model, only the isolated molecules showed significant results. In α-amylase assay, all fractions, for exception Hex, presented notable inhibition capacity with low IC50 values, especially DCM, EtOAc, ButOH and H2O (IC50 0.56 ± 0.10, 0.84 ± 0.01, 0.74 ± 0.03 and 0.79 ± 0.06 μg/mL, respectively). Tests using hepatic tissue showed a notorious capacity of the DCM, AcOEt and ButOH fractions, as well as of the isolated molecules to inhibit lipid peroxidation and ROS production, and also to preserve thiol groups. Molecules of great antioxidant potential were found in our samples, such as kaempferol, quercetin, catechin, gallic acid and luteolin. CONCLUSION A. humile extract and its organic fractions showed promising antioxidant and antiglycation potential and a prominent capacity to inhibit the α-amylase enzyme. Hence, this study presents new results and stimulates further research to elucidate the biological properties of A. humile and its capacity to manage DM and its complications.
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Affiliation(s)
- Joed Pires de Lima Júnior
- Graduate Program in Cell Biology, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Rodrigo Rodrigues Franco
- Institute of Biotechnology (IBTEC), Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - André Lopes Saraiva
- Institute of Biotechnology (IBTEC), Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Izabela Barbosa Moraes
- Center of Biological Sciences and Health (CCBS), Federal University of Oeste da Bahia (UFOB), Barreiras, BA, Brazil
| | - Foued Salmen Espindola
- Graduate Program in Cell Biology, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil; Institute of Biotechnology (IBTEC), Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil.
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14
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Green tea polyphenols mitigate the plant lectins-induced liver inflammation and immunological reaction in C57BL/6 mice via NLRP3 and Nrf2 signaling pathways. Food Chem Toxicol 2020; 144:111576. [DOI: 10.1016/j.fct.2020.111576] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/22/2020] [Accepted: 07/01/2020] [Indexed: 12/16/2022]
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15
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Yan Z, Zhong Y, Duan Y, Chen Q, Li F. Antioxidant mechanism of tea polyphenols and its impact on health benefits. ACTA ACUST UNITED AC 2020; 6:115-123. [PMID: 32542190 PMCID: PMC7283370 DOI: 10.1016/j.aninu.2020.01.001] [Citation(s) in RCA: 262] [Impact Index Per Article: 65.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 12/18/2022]
Abstract
Tea trees have a long history of cultivation and utilization. People in many countries have the habit of drinking tea and choosing green tea, oolong tea, or black tea according to different regions and personal tastes. Tea polyphenols are a general term for polyphenol compounds in tea, and has been shown to have good effects on antioxidant, anti-inflammatory, cancer prevention and regulation of lipid metabolism. Tea polyphenols have been widely used as antioxidants in disease treatment and animal husbandry, but their specific mechanism of action needs to be further clarified and revealed. This review focuses on the definition, classification, antioxidant activity and the regulation of signaling pathways of tea polyphenols. This paper also aims to examine the application of tea polyphenols in human and animal health, providing a scientific basis for this application in addition to proposing future directions for the development of this resource.
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Affiliation(s)
- Zhaoming Yan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China.,Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture Chinese Academy of Sciences, Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha 410125, China
| | - Yinzhao Zhong
- College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Yehui Duan
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture Chinese Academy of Sciences, Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha 410125, China
| | - Qinghua Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Fengna Li
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Institute of Subtropical Agriculture Chinese Academy of Sciences, Key Laboratory of Agro-ecological Processes in Subtropical Region, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha 410125, China.,Hunan Co-Innovation Center of Animal Production Safety, Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients, Changsha 410128, China
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16
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Wang D, Gao Q, Wang T, Kan Z, Li X, Hu L, Peng CY, Qian F, Wang Y, Granato D. Green tea polyphenols and epigallocatechin-3-gallate protect against perfluorodecanoic acid induced liver damage and inflammation in mice by inhibiting NLRP3 inflammasome activation. Food Res Int 2019; 127:108628. [PMID: 31882076 DOI: 10.1016/j.foodres.2019.108628] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/02/2019] [Accepted: 08/17/2019] [Indexed: 12/11/2022]
Abstract
Perfluorodecanoic acid (PFDA) is a highly toxic food contaminant that is extensively used in food applications as surface antifouling agent. In this present study, we aimed to assess whether green tea polyphenols (GTPs) and epigallocatechin-3-gallate (EGCG) exert protective effects against PFDA-induced liver damage and inflammation in mice. A mouse model to evaluate liver toxicity was established by giving mice drinking water containing different concentrations of PFDA. GTPs or EGCG (0.32%, w/v) were co-administered to mice exposed to PFDA in drinking water. Overall, GTPs and EGCG extended the survival time and inhibited weight loss among mice who received a lower dose of PFDA. Moreover, GTPs and EGCG ameliorated hepatic oxidative stress, cell apoptosis, necrosis, steatosis, edema, and degeneration, reduced hepatic inflammation and NLRP3 inflammasome activation caused by a moderate dose of PFDA. Taken together, these results show that GTPs or EGCG (or green tea intake) supplements can be beneficial for people exposed to PFDA.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Qiang Gao
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Taotao Wang
- Department of Clinical Nutrition, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, PR China
| | - Zhipeng Kan
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Xin Li
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Lizhen Hu
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Chuan-Yi Peng
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China
| | - Frank Qian
- Pritzker School of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, Anhui 230036, PR China.
| | - Daniel Granato
- Food Processing and Quality, Production Systems Unit, Natural Resources Institute Finland, Luke, Maarintie 6, Open Innovation House, FI-02150 Espoo, Finland.
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17
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Wang D, Zhang M, Wang T, Cai M, Qian F, Sun Y, Wang Y. Green tea polyphenols prevent lipopolysaccharide-induced inflammatory liver injury in mice by inhibiting NLRP3 inflammasome activation. Food Funct 2019; 10:3898-3908. [DOI: 10.1039/c9fo00572b] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Inflammatory liver diseases present a significant public health problem.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Man Zhang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Taotao Wang
- Department of Clinical Nutrition
- Affiliated Hospital of Jiangsu University
- Zhenjiang
- PR China
| | - Min Cai
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Frank Qian
- Pritzker School of Medicine
- University of Chicago
- Chicago
- USA
| | - Yue Sun
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization
- School of Tea and Food Science & Technology
- Anhui Agricultural University
- Hefei
- PR China
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18
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Protective Effect of Phaleria macrocarpa Water Extract (Proliverenol) against Carbon Tetrachloride-Induced Liver Fibrosis in Rats: Role of TNF- α and TGF- β1. J Toxicol 2018; 2018:2642714. [PMID: 30631351 PMCID: PMC6304574 DOI: 10.1155/2018/2642714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/27/2018] [Accepted: 11/11/2018] [Indexed: 01/25/2023] Open
Abstract
Phaleria macrocarpa is one of the Indonesian herbal plants which has been shown to have a hepatoprotective effect. This study was conducted to evaluate the protective effect of water extract of mahkota dewa (Phaleria macrocarpa) in liver fibrosis and to elucidate its mechanism of action. Male Sprague-Dawley rats were treated with carbon tetrachloride (CCl4) for 8 weeks to induce liver fibrosis. Rats were randomly divided into 6 groups (n=5), i.e., control group, CCl4 group, CCl4 + NAC group, CCl4 + various doses of water extract of Phaleria macrocarpa (50, 100, and 150 mg/kg body weight). Aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), liver histopathology, malondialdehyde (MDA), ratio GSH/GSSG, Tumor Necrosis Factor- (TNF-) α, and Transforming Growth Factor- (TGF-) β 1 were analyzed. This study demonstrated that water extract of Phaleria macrocarpa and NAC significantly protected CCl4-induced liver injury as demonstrated by reduced AST, ALT, ALP, and fibrosis percentage compared with the CCl4-only group. In addition, water extract of Phaleria macrocarpa and NAC significantly reduced the levels of MDA, TNF-α, and TGF-β 1 as well as increasing the ratio of GSH/GSSG. Water extract of Phaleria macrocarpa prevents CCl4-induced fibrosis in rats. The prevention of liver fibrosis was at least in part through its antioxidant and anti-inflammatory activities and through its capacity to inhibit hepatic stellate cells (HSC) activation by reducing fibrogenic cytokine TGF-β 1.
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19
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Liu H, Su WW, Long CF, Zhang WJ, Li PB, Wu Z, Liao YY, Zeng X, Chen TB, Zheng YY, Yan ZH, Bi C, Yao HL. An experimental model for hypertensive crises emergencies: Long-term high-fat diet followed by acute vasoconstriction stress on spontaneously hypertensive rats. Exp Biol Med (Maywood) 2018; 243:481-495. [PMID: 29444597 PMCID: PMC5882032 DOI: 10.1177/1535370218759270] [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: 09/18/2017] [Accepted: 01/15/2018] [Indexed: 11/16/2022] Open
Abstract
Currently, the prevention and treatment of hypertensive crises especially when it occurs with serious adverse outcomes have led to worldwide controversy. Despite of clinical possibilities of multiple agents, clinical failures still occur frequently. Therefore, early evaluations and observations of different therapies on appropriate animals should be emphasized. In the present study, an animal model for hypertensive crises emergencies was firstly established and experimentally testified. Five-month-male spontaneously hypertensive rat was consecutively fed with 60%-Kcal fat diet for four, six, and eight weeks with body weight and blood pressure monitored every two weeks, and then followed by an acute vasoconstriction stress of 5-min ice-bath treatment in the 4-h time interval of two adrenaline injections (0.8 mg/kg). Forty-four biochemical parameters were detected, covering hepatic and renal function, blood glucose and lipid levels, myocardial enzymes and energy metabolisms, blood coagulative and anti-coagulative system, oxidative stress and anti-inflammatory cytokine, blood viscosity, and RAAS system. Six tissues including heart, brain, liver, kidney, coronary arteries, and mesenteries were removed for pathological observations with hematoxylin-eosin staining. As a result, multi-organ dysfunctions in the heart, brain, liver, kidney, vascular endothelium, and blood system were testified in the modeling rats at weeks 6 and 8. In conclusion, severe consequences of this animal model were highly similar to those in hypertensive crises emergencies, which could be further utilized in the early intervention of hypertensive crises emergencies including the possible risk factors control and efficient therapies assessment. Impact statement In the late 90s, numerous reports predicted that 1-2% of hypertensive individuals would undergo hypertensive crises (HPC) and figures reached as high as 7% when no antihypertensive therapies were administrated. Currently, clinical failures appear frequently due to the improper or excessive medication regimen instead of the illness itself. Therefore, early evaluations and observations of HPC on appropriate animal models ahead of patients should be discussed and emphasized more widely. In the present study, an appropriate animal model for HPC emergencies was firstly established, in which the consequences of long-term high-fat diet feeding followed by an acute vasoconstriction stress on the spontaneously hypertensive rats were experimentally testified. The proposed model would have a wide application prospects in early intervention of HPC emergencies including the controls of possible risk factors and assessments of efficient therapies.
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Affiliation(s)
- Hong Liu
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Wei-Wei Su
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Chao-Feng Long
- Guangdong Zhongsheng Pharmaceutical Co., Ltd, Dongguan 523325, P.R. China
| | - Wei-Jian Zhang
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Pei-Bo Li
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Zhong Wu
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Yin-Yin Liao
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Xuan Zeng
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Tao-Bin Chen
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Yu-Ying Zheng
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Zeng-Hao Yan
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Cong Bi
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Hong-Liang Yao
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
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Therapeutic dose of green tea extract provokes liver damage and exacerbates paracetamol-induced hepatotoxicity in rats through oxidative stress and caspase 3-dependent apoptosis. Biomed Pharmacother 2017; 96:798-811. [DOI: 10.1016/j.biopha.2017.10.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/02/2017] [Accepted: 10/10/2017] [Indexed: 12/12/2022] Open
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21
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Kumar M, Singh G, Bhardwaj P, Dhatwalia SK, Dhawan DK. Understanding the role of 3-O-Acetyl-11-keto-β-boswellic acid in conditions of oxidative-stress mediated hepatic dysfunction during benzo(a)pyrene induced toxicity. Food Chem Toxicol 2017; 109:871-878. [PMID: 28363852 DOI: 10.1016/j.fct.2017.03.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/23/2017] [Accepted: 03/27/2017] [Indexed: 01/14/2023]
Abstract
The present study was planned to see whether 3-O-Acetyl-11- keto-β-boswellic acid has any protective effects against benzo(a)pyrene (BaP) induced toxicity or not. In vitro studies show concentration dependent linear association of radical scavenging activity of AK which is comparable to ascorbic acid taken as reference compound. For in vivo studies, the animals were divided randomly into five groups which included a) normal control, b) vehicle treated (olive oil), c) BaP treated, d) AK treated and e) AK + BaP (combined treated). BaP was administered at a dose of 50mg/kg in olive oil twice a week orally for 4 weeks and AK (50mg/kg) was given in olive oil thrice a week for 4 weeks before and after BaP exposure. BaP treated animals showed a significant increase (p < 0.001) in lipid peroxidation (LPO) and protein carbonyl contents (PCC) in hepatic tissue. Further, a significant increase (p < 0.001) in the liver marker enzymes as well as citrulline and nitric oxide levels in the hepatic tissue was also observed. Interestingly, AK when supplemented to BaP treated animals ameliorated the above said biochemical indices appreciately. The histopathological observations also showed appreciable improvement when BaP treated animals were supplemented with AK, thus emphasing the protective potential of AK.
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Affiliation(s)
- Manoj Kumar
- Department of Biophysics, Panjab University Chandigarh, India
| | - Gurpreet Singh
- Department of Biophysics, Panjab University Chandigarh, India
| | - Priti Bhardwaj
- Department of Biophysics, Panjab University Chandigarh, India
| | | | - D K Dhawan
- Department of Biophysics, Panjab University Chandigarh, India.
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22
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Rameshrad M, Razavi BM, Hosseinzadeh H. Protective effects of green tea and its main constituents against natural and chemical toxins: A comprehensive review. Food Chem Toxicol 2016; 100:115-137. [PMID: 27915048 DOI: 10.1016/j.fct.2016.11.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 11/24/2016] [Accepted: 11/30/2016] [Indexed: 01/26/2023]
Abstract
Toxins are natural or chemical poisonous substances with severe side effects on health. Humans are generally exposed by widespread toxic contaminations via air, soil, water, food, fruits and vegetables. Determining a critical antidote agent with extensive effects on different toxins is an ultimate goal for all toxicologists. Traditional medicine is currently perceived as a safe and natural approach against toxins. In this regard, we focused on the protective effects of green tea (Camellia sinensis) and its main components such as catechin, epicatechin, epicatechin gallate, gallocatechin, epigallocatechin and epigallocatechin gallate as a principal source of antioxidants against both natural and chemical toxins. This literate review demonstrates that protective effects of green tea and its constituents were mainly attributed to their anti-oxidative, radical scavenging, chelating, anti-apoptotic properties and modulating inflammatory responses. Although, some studies reveal they have protective effects by increasing toxin metabolism and neutralizing PLA2, proteases, hyaluronidase and l-amino acid oxidase enzymes.
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Affiliation(s)
- Maryam Rameshrad
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Bibi Marjan Razavi
- Targeted Drug Delivery Research Center, Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Kulandaivelu K, Mandal AKA. Positive regulation of biochemical parameters by tea polyphenol encapsulated solid lipid nanoparticles at in vitro and in vivo conditions. IET Nanobiotechnol 2016; 10:419-424. [PMID: 27906144 PMCID: PMC8676672 DOI: 10.1049/iet-nbt.2015.0113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/21/2016] [Accepted: 03/29/2016] [Indexed: 11/20/2022] Open
Abstract
Tea polyphenols (TPPs) comprise preventive and therapeutic potentials against cancer, cardiovascular and neurological disorders. Chemical instability of TPP which leads to low bioavailability is the major constrain to its use as therapeutic agent. The authors prepared TPP encapsulated solid lipid nanoparticles (TPP-SLNs) to increase its stability and bioefficacy. Comparison of Fourier transformed infrared spectra of unloaded SLN, free TPP and TPP-SLN indicated encapsulation of TPP. Sustained release of TPP from TP-SLN was observed. TPP-SLN showed prolonged free radical scavenging activity compared with free TPP indicating protection of TPP. TPP-SLN showed activation of Caspases-9 and -3 cascades in breast cancer cell line (Michigan cancer foundation (MCF)-7) at in vitro conditions. Biochemical parameters were altered in Ehrlich ascetic carcinoma (EAC) cell bearing mice compared with normal (uninduced) mice which were ameliorated significantly by oral feeding of TPP-SLN. Oral administration (pre- and post-treated) of TPP-SLN in EAC bearing mice resulted in significant increase of plasma haemoglobin, glucose, superoxide dismutase and catalase when compared with EAC bearing control mice. Other biochemical parameters (cholesterol, bilirubin, triglyceride, urea, total protein, alanine aminotransferase, alkaline phosphatase and aspertate transaminase were significantly decreased on oral administration (pre- and post-treated) of TPP-SLN in EAC bearing mice.
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Affiliation(s)
- Karikalan Kulandaivelu
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Abul Kalam Azad Mandal
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India.
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Ramsaha S, Neergheen-Bhujun VS, Verma S, Kumar A, Bharty RK, Chaudhary AK, Sharma P, Singh RK, Huzar Futty Beejan P, Kyung-Sun K, Bahorun T. Modulation of hepatocarcinogenesis in N-methyl-N-nitrosourea treated Balb/c mice by mushroom extracts. Food Funct 2016; 7:594-609. [PMID: 26574664 DOI: 10.1039/c5fo00870k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The hepatoprotective potential of edible mushrooms from Mauritius, namely Pleurotus sajor-caju and Agaricus bisporus was evaluated using an N-methyl-N-nitrosourea (MNU)-induced hepatocarcinogenesis Balb/c mice model. Mushroom extracts restored normal weight in MNU treated mice over a 3 month supplementation period. Blood parameter analyses indicated a clear modulation of hemoglobin concentration, leukocyte, platelet, lymphocyte, neutrophil, monocyte and eosinophil counts in MNU-induced mice (p < 0.05). Mushroom extract supplementation effectively reduced oxidative damage in MNU-primed mice, which was marked by a significant decrease in the extent of lipid peroxidation (p < 0.05) and a concomitant increase in the enzymatic antioxidant levels, primarily catalase, superoxide dismutase, glutathione reductase and peroxidase, and FRAP values (p < 0.05). DNA protective effects of the extracts were confirmed by Raman spectroscopy, where, the MNU-DNA interaction, as evidenced by an intense peak at 1254 cm(-1), was normalized. The findings demonstrate hepatoprotective, immunomodulatory and anti-carcinogenic effects and suggest the use of mushrooms as potential dietary prophylactics in cancer chemoprevention.
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Affiliation(s)
- Srishti Ramsaha
- Department of Health Sciences, Faculty of Science, University of Mauritius, Réduit, Republic of Mauritius. and ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius.
| | - Vidushi S Neergheen-Bhujun
- Department of Health Sciences, Faculty of Science, University of Mauritius, Réduit, Republic of Mauritius. and ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius.
| | - Shalini Verma
- Institute of Biosciences and Biotechnology, Chhatrapati Shahuji Maharaj University, Kanpur, Uttar Pradesh, India
| | - Ashok Kumar
- Deen Dayal Upadhyay Gorakhpur University, Gorakhpur, Uttar Pradesh, India
| | - Rahul Kumar Bharty
- Institute of Biosciences and Biotechnology, Chhatrapati Shahuji Maharaj University, Kanpur, Uttar Pradesh, India
| | - Amit Kumar Chaudhary
- Institute of Biosciences and Biotechnology, Chhatrapati Shahuji Maharaj University, Kanpur, Uttar Pradesh, India
| | - Poornima Sharma
- Department of Physics, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ranjan Kumar Singh
- Department of Physics, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Priya Huzar Futty Beejan
- Mushroom Unit, Food and Agricultural Research and Extension Institute, La Brasserie, Republic of Mauritius
| | - Kang Kyung-Sun
- Department of Veterinary Public Health, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Theeshan Bahorun
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, CBBR, Building, MSIRI, University of Mauritius, Réduit, Republic of Mauritius.
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25
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Kujawska M, Ewertowska M, Adamska T, Ignatowicz E, Gramza-Michałowska A, Jodynis-Liebert J. Protective effect of yellow tea extract on N-nitrosodiethylamine-induced liver carcinogenesis. PHARMACEUTICAL BIOLOGY 2016; 54:1891-1900. [PMID: 26839940 DOI: 10.3109/13880209.2015.1137600] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/26/2015] [Accepted: 12/26/2015] [Indexed: 06/05/2023]
Abstract
Context Yellow tea containing the same catechins as other types of tea but in different proportions has been suggested to possess potent anticancer activities. Objective This study investigates the chemopreventive effect of yellow tea aqueous extract against N-nitrosodiethylamine (NDEA)-induced liver carcinogenesis in rats by employing histological and biochemical methods. Materials and methods Wistar rats were divided randomly into four groups: control (I), yellow tea (II), NDEA (III), and yellow tea + NDEA (IV). Groups II and IV were exposed via a diet to yellow tea extract in a concentration of 10 g/kg feed; groups III and IV received 0.01% NDEA in drinking water. The experiment lasted for 13 weeks. Results Daily intake of yellow tea in an average dose of 800 mg/kg b.w. alleviated the carcinogenic effect of NDEA as evidenced by reversed histopathological changes towards normal hepatocellular architecture and decreased lipid peroxidation, protein carbonyl formation, and DNA degradation by 64%, 37% and 15%, respectively, as compared with values obtained in NDEA alone-treated rats. Treatment with yellow tea extract caused protection of superoxide dismutase (SOD) and catalase (CAT); their activity was recovered by 47% and 12%, respectively, as compared with the NDEA-treated rats. Moreover, the extract normalized the NDEA-induced activity of paraoxonase 1 (PON1) and glutathione peroxidase (GPx), while a further increase in the level of reduced glutathione (GSH) was noticed. Conclusions On the basis of these findings, it can be concluded that treatment with yellow tea partially protected the livers of rats from NDEA-induced hepatocarcinogenesis and that its antioxidant activity contributed to this effect.
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MESH Headings
- Animals
- Anticarcinogenic Agents/isolation & purification
- Anticarcinogenic Agents/pharmacology
- Antioxidants/isolation & purification
- Antioxidants/pharmacology
- Biomarkers/blood
- Camellia sinensis/chemistry
- Cell Transformation, Neoplastic/chemically induced
- Cell Transformation, Neoplastic/drug effects
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- DNA Damage/drug effects
- Diethylnitrosamine
- Lipid Peroxidation/drug effects
- Liver/drug effects
- Liver/metabolism
- Liver/pathology
- Liver Neoplasms, Experimental/blood
- Liver Neoplasms, Experimental/chemically induced
- Liver Neoplasms, Experimental/pathology
- Liver Neoplasms, Experimental/prevention & control
- Male
- Oxidative Stress/drug effects
- Phytotherapy
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Plants, Medicinal
- Protein Carbonylation/drug effects
- Rats, Wistar
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Affiliation(s)
- Małgorzata Kujawska
- a Department of Toxicology , Poznan University of Medical Sciences , Poznań , Poland
| | - Małgorzata Ewertowska
- a Department of Toxicology , Poznan University of Medical Sciences , Poznań , Poland
| | - Teresa Adamska
- a Department of Toxicology , Poznan University of Medical Sciences , Poznań , Poland
| | - Ewa Ignatowicz
- b Department of Pharmaceutical Biochemistry , Poznan University of Medical Sciences , Poznań , Poland
| | - Anna Gramza-Michałowska
- c Faculty of Food Science and Nutrition , Poznań University of Life Sciences , Poznań , Poland
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26
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Dost K, Karaca G. Evaluation of Phytic Acid Content of Some Tea and Nut Products by Reverse-Phase High Performance Liquid Chromatography/Visible Detector. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0319-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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27
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Brewers' Rice: A By-Product from Rice Processing Provides Natural Hepatorenal Protection in Azoxymethane-Induced Oxidative Stress in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:539798. [PMID: 26257841 PMCID: PMC4516842 DOI: 10.1155/2015/539798] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 06/30/2015] [Indexed: 02/07/2023]
Abstract
Brewers' rice, which is known locally as temukut, is a mixture of broken rice, rice bran, and rice germ. Our present study was designed to identify the effect of brewers' rice on the attenuation of liver and kidney damage induced by azoxymethane (AOM). Alanine transaminase (ALT), alkaline phosphatase (ALP), aspartate transaminase (AST), creatinine, and urea were evaluated to understand potential hepatoprotective effects and the ability of brewers' rice to attenuate kidney pathology induced by AOM treatment. Liver and kidney tissues were evaluated by hematoxylin and eosin (H&E) staining. Overall analyses revealed that brewers' rice improved the levels of serum markers in a manner associated with better histopathological outcomes, which indicated that brewers' rice could enhance recovery from hepatocyte and kidney damage. Taken together, these results suggest that brewers' rice could be used in future applications to combat liver and kidney disease.
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28
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Zhao C, Li C, Liu S, Yang L. The galloyl catechins contributing to main antioxidant capacity of tea made from Camellia sinensis in China. ScientificWorldJournal 2014; 2014:863984. [PMID: 25243234 PMCID: PMC4163330 DOI: 10.1155/2014/863984] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 08/03/2014] [Indexed: 11/17/2022] Open
Abstract
Total polyphenol content, catechins content, and antioxidant capacities of green, dark, oolong, and black teas made from Camellia sinensis in China were evaluated. The total polyphenol content of 20 samples of tea was in the range of 7.82-32.36%. Total catechins content was in the range of 4.34-24.27%. The antioxidant capacity of tea extract was determined by the oxygen radical absorbance capacity (ORAC) test and the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging test. Total polyphenol content, catechins content, and antioxidant capacity decreased in the following order: green > oolong > black > dark tea. A positive correlation existed between the antioxidant capacity and total polyphenol content or catechins content (R (2) = 0.67-0.87). The antioxidant capacities of five major catechins (epigallocatechin gallate (EGCG), epicatechin gallate (ECG), epicatechin, epigallocatechin, and catechin) were determined by online HPLC DPPH radical-scavenging; the antioxidant activity of tea was mainly attributed to the esterified catechins (EGCG or ECG).
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Affiliation(s)
- Chunjian Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Chunying Li
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Shuaihua Liu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Lei Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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29
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Real-time monitoring of total polyphenols content in tea using a developed optical sensors system. J Pharm Biomed Anal 2014; 97:116-22. [DOI: 10.1016/j.jpba.2014.04.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/21/2014] [Accepted: 04/23/2014] [Indexed: 11/23/2022]
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30
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Zielinski AAF, Haminiuk CWI, Alberti A, Nogueira A, Demiate IM, Granato D. A comparative study of the phenolic compounds and the in vitro antioxidant activity of different Brazilian teas using multivariate statistical techniques. Food Res Int 2014. [DOI: 10.1016/j.foodres.2013.09.010] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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31
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Li M, Ma G, Han L, Li J. Regulating Effect of Tea Polyphenols on Endothelin, Intracellular Calcium Concentration, and Mitochondrial Membrane Potential in Vascular Endothelial Cells Injured by Angiotensin II. Ann Vasc Surg 2014; 28:1016-22. [DOI: 10.1016/j.avsg.2013.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 10/24/2013] [Accepted: 11/25/2013] [Indexed: 01/12/2023]
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32
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Ahmed WMS, Khalaf AA, Moselhy WA, Safwat GM. Royal jelly attenuates azathioprine induced toxicity in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:431-437. [PMID: 24444696 DOI: 10.1016/j.etap.2013.12.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 12/14/2013] [Accepted: 12/20/2013] [Indexed: 06/03/2023]
Abstract
In the present study, we investigated the potential protective effects of royal jelly against azathioprine-induced toxicity in rat. Intraperitoneal administration of azathioprine (50 mg/kgB.W.) induced a significant decrease in RBCs count, Hb concentration, PCV%, WBCs count, differential count and platelet count, hepatic antioxidant enzymes (reduced glutathione and glutathione s-transferase) and increase of serum transaminases (alanine aminotransferase and aspartate aminotransferase enzymes) activities, alkaline phosphatase and malondialdehyde formation. Azathioprine induced hepatotoxicity was reflected by marked pathological changes in the liver. Oral administration of royal jelly (200 mg/kgB.W.) was efficient in counteracting azathioprine toxicity whereas it altered the anemic condition, leucopenia and thrombocytopenia induced by azathioprine. Furthermore, royal jelly exerted significant protection against liver damage induced by azathioprine through reduction of the elevated activities of serum hepatic enzymes. Moreover, royal jelly blocked azathioprine-induced lipid peroxidation through decreasing the malondialdehyde formation. In conclusion, royal jelly possesses a capability to attenuate azathioprine-induced toxicity.
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Affiliation(s)
- Walaa M S Ahmed
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Egypt.
| | - A A Khalaf
- Department of Toxicology & Forensic Medicine, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Walaa A Moselhy
- Department of Toxicology & Forensic Medicine, Faculty of Veterinary Medicine, Beni-Suef University, Egypt
| | - Ghada M Safwat
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Egypt
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33
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Ingawale DK, Mandlik SK, Naik SR. Models of hepatotoxicity and the underlying cellular, biochemical and immunological mechanism(s): a critical discussion. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:118-133. [PMID: 24322620 DOI: 10.1016/j.etap.2013.08.015] [Citation(s) in RCA: 160] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 08/27/2013] [Accepted: 08/31/2013] [Indexed: 06/03/2023]
Abstract
Liver is a primary organ involved in biotransformation of food and drugs. Hepatic diseases are a major worldwide problem. Hepatic disorders are mainly caused by toxic chemicals (alcohol), xenobiotics (carbon tetrachloride, chlorinated hydrocarbons and gases CO₂ and O₂) anticancer (azathioprine, doxorubicin, cisplatin), immunosuppressant (cyclosporine), analgesic anti-inflammatory (paracetamol, thioacetamide), anti-tubercular (isoniazid, rifampicin) drugs, biologicals (Bacillus-Calmette-Guerin vaccine), radiations (gamma radiations), heavy metals (cadmium, arsenic), mycotoxin (aflatoxin), galactosamine, lipopolysaccharides, etc. Various risk factors for hepatic injury include concomitant hepatic diseases, age, gender, alcoholism, nutrition and genetic polymorphisms of cytochrome P450 enzymes have also been emphasized. The present review enumerates various in vivo animal models and in vitro methods of hepatic injury using diverse toxicants, their probable metabolic pathways, and numerous biochemical changes viz. serum biomarkers enzymes, liver function, oxidative stress associated events like free radicals formation, lipid peroxidation, enzyme antioxidants and participation of cytokines (tumour necrosis factor-α, transforming growth factor-β, tumour necrosis factor-related apoptosis inducing ligand), and other biomolecules (Fas and C-jun N-terminal kinase) are also discussed. The underlying cellular, molecular, immunological, and biochemical mechanism(s) of action responsible for liver damage (toxicity) are also been discussed. This review should be immensely useful for researchers especially for phytochemists, pharmacologists and toxicologists working on hepatotoxicity, hepatotoxic chemicals and drugs, hepatoprotective agents and drug research organizations involved especially in phytopharmaceuticals and other natural products.
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Affiliation(s)
- Deepa K Ingawale
- Sinhgad Technical Education Society's, Sinhgad Institute of Pharmaceutical Sciences, S. No. 309/310, Off Mumbai-Pune Expressway, Kusgaon (Bk.), Lonavala, Pune 410 401, Maharashtra, India
| | - Satish K Mandlik
- Sinhgad College of Pharmacy, S. No. 44/1, Vadgaon (Bk.), Off Sinhgad Road, Pune 411 041, Maharashtra, India
| | - Suresh R Naik
- Sinhgad Technical Education Society's, Sinhgad Institute of Pharmaceutical Sciences, S. No. 309/310, Off Mumbai-Pune Expressway, Kusgaon (Bk.), Lonavala, Pune 410 401, Maharashtra, India.
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34
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Involvement of oxidative stress and immune- and inflammation-related factors in azathioprine-induced liver injury. Toxicol Lett 2013; 224:215-24. [PMID: 24184165 DOI: 10.1016/j.toxlet.2013.10.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 10/23/2013] [Accepted: 10/23/2013] [Indexed: 11/21/2022]
Abstract
Drug-induced liver injury (DILI) is a growing concern in the fields of drug development and clinical drug therapy because numerous drugs have been linked to hepatotoxicity. However, it is difficult to predict DILI in humans due to the lack of experimental animal models. Although azathioprine (AZA), which is a widely used immunosuppressive drug, is generally well tolerated, a small number of patients prescribed AZA develop severe hepatitis. However, the mechanism underlying this process has not yet been elucidated. In this study, we developed a mouse model of AZA-induced liver injury and investigated the mechanisms responsible for the hepatotoxicity of AZA. Female BALB/c mice were orally administered AZA. After AZA administration, the plasma levels of alanine aminotransferase and aspartate aminotransferase were increased, and liver damage was confirmed through a histological evaluation. In addition, the hepatic glutathione levels and superoxide dismutase activity were significantly decreased. The plasma levels of reactive oxygen species were significantly increased during the early phase of AZA-induced liver injury, and the hepatic mRNA levels of immune- and inflammation-related factors were also significantly changed. In conclusion, oxidative stress and the subsequently activated immune- and inflammation-related factors are involved in AZA-induced liver injury.
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35
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Raghunandhakumar S, Paramasivam A, Senthilraja S, Naveenkumar C, Asokkumar S, Binuclara J, Jagan S, Anandakumar P, Devaki T. Thymoquinone inhibits cell proliferation through regulation of G1/S phase cell cycle transition in N-nitrosodiethylamine-induced experimental rat hepatocellular carcinoma. Toxicol Lett 2013; 223:60-72. [PMID: 24012840 DOI: 10.1016/j.toxlet.2013.08.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/16/2013] [Accepted: 08/22/2013] [Indexed: 01/12/2023]
Abstract
Dysregulated cell proliferation and tumorigenesis is frequently encountered in several cancers including hepatocellular carcinogenesis (HCC). Thus, agents that inhibit cell proliferation and restrain hepatic tumorigenesis through cell cycle regulation have a beneficial effect in the treatment of hepatocellular carcinogenesis. The present study was aimed to investigate the efficacy of thymoquinone (TQ), an active compound derived from the medicinal plant Nigella sativa, on N-nitrosodiethylamine (NDEA) [0.01% in drinking water for 16 weeks]-induced hepatocarcinogenesis in experimental rats. After experimental period, the hepatic nodules, liver injury markers and tumor markers levels were substantially increased in NDEA induced liver tumors in rats. However, TQ (20mg/kg body weight) treatment greatly reduced liver injury markers and decreased tumor markers and prevented hepatic nodule formation and reduced tumor multiplicity in NDEA induced hepatic cancer bearing rats and this was evident from argyrophilic nucleolar organizer region (AgNORs) staining. Moreover, the uncontrolled cell proliferation was assessed by specific cell proliferative markers [proliferating cell nuclear antigen (PCNA) and Ki67] by immunofluorescence, immunoblot and analysis of mRNA expression. Simultaneously, we assessed the activity of TQ on G1/S phase cell cycle regulation with specific cell cycle proteins (p21(WAF1/CIP1), CDK4, Cyclin D1 and Cyclin E) by immunoprecipitation in experimental rats. Treatment with TQ significantly reduced the detrimental alterations by abrogating cell proliferation, which strongly induced G1/S arrest in cell cycle transition. In conclusion, our results suggest that TQ has a potent anti proliferative activity by regulating the G1/S phase cell cycle transition and exhibit a beneficial role in the treatment of HCC.
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Abstract
Treatment of immune-mediated disease in dogs and cats continues to evolve as new therapies are introduced or adapted from human medicine. Glucocorticoids remain the first-line therapy for many of the immune-mediated or inflammatory diseases of cats and dogs. The focus of this article is to provide an update on some of the common immunosuppressive therapies used in small animal veterinary medicine. The goals of therapy are to induce disease remission through the inhibition of inflammation and the modulation of lymphocyte function.
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Affiliation(s)
- Katrina R Viviano
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA.
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37
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Quan W, Yin Y, Xi M, Zhou D, Zhu Y, Guan Y, Guo C, Wang Y, Duan J, Wen A. Antioxidant properties of magnesium lithospermate B contribute to the cardioprotection against myocardial ischemia/reperfusion injury in vivo and in vitro. J TRADIT CHIN MED 2013; 33:85-91. [DOI: 10.1016/s0254-6272(13)60106-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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38
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Antioxidant and hepatoprotective effect of aqueous extract of germinated and fermented mung bean on ethanol-mediated liver damage. BIOMED RESEARCH INTERNATIONAL 2012; 2013:693613. [PMID: 23484140 PMCID: PMC3591205 DOI: 10.1155/2013/693613] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 10/25/2012] [Accepted: 10/26/2012] [Indexed: 01/15/2023]
Abstract
Mung bean is a hepatoprotective agent in dietary supplements. Fermentation and germination processes are well recognized to enhance the nutritional values especially the concentration of active compounds such as amino acids and GABA of various foods. In this study, antioxidant and hepatoprotective effects of freeze-dried mung bean and amino-acid- and GABA-enriched germinated and fermented mung bean aqueous extracts were compared. Liver superoxide dismutase (SOD), malondialdehyde (MDA), ferric reducing antioxidant power (FRAP), nitric oxide (NO) levels, and serum biochemical profile such as aspartate transaminase (AST), alanine transaminase (ALT), triglycerides (TG), and cholesterol and histopathological changes were examined for the antioxidant and hepatoprotective effects of these treatments. Germinated and fermented mung bean have recorded an increase of 27.9 and 7.3 times of GABA and 8.7 and 13.2 times of amino acid improvement, respectively, as compared to normal mung bean. Besides, improvement of antioxidant levels, serum markers, and NO level associated with better histopathological evaluation indicated that these extracts could promote effective recovery from hepatocyte damage. These results suggested that freeze-dried, germinated, and fermented mung bean aqueous extracts enriched with amino acids and GABA possessed better hepatoprotective effect as compared to normal mung bean.
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39
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Effect of tea polyphenol on oxidative injury in S180 cells induced hepatocarcinoma mice. Int J Mol Sci 2012; 13:5571-5583. [PMID: 22754316 PMCID: PMC3382754 DOI: 10.3390/ijms13055571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 04/27/2012] [Accepted: 04/28/2012] [Indexed: 01/10/2023] Open
Abstract
The purpose of this study was to evaluate the antioxidant nature of tea polyphenol on S180 cells induced liver cancer in mice. In the present study, hepatocellular carcinoma was induced by tumor transplantation of liver in situ. The antitumor activity of tea polyphenol has been determined in vivo in hepatocellular carcinoma mice after treatment of drug (50, 100, 150 mg/kg body weight) by gavage for 20 days. Results showed that a significant increase in serum aspartate transaminase (AST), alkaline phosphatase (ALP), alanine aminotransfere (ALT), malondialdehyde (MDA) level, decrease in serum white blood cells (WBC), serum total protein (TP), albumin (ALB), A/G, tumor necrosis factor-α (TNF-α) and interferon-gamma (IFN-γ), liver reduced glutathione (GSH) levels were observed. In addition, the levels of enzymic and non-enzymic antioxidants were decreased when subjected to S180 cells induction. These altered enzyme levels were ameliorated significantly by administration of tea polyphenol at the concentration of 50, 100, 150 mg/kg body weight in drug-treated animals. These results indicate that the protective effect of tea polyphenol was associated with inhibition of MDA induced by S180 cells and to maintain the antioxidant enzyme levels.
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40
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Anand H, Misro MM, Sharma SB, Prakash S. Cytoprotective effects of fruit pulp of Eugenia jambolana on H 2 O 2 -induced oxidative stress and apoptosis in rat Leydig cells in vitro. Andrologia 2012; 45:145-57. [PMID: 22731239 DOI: 10.1111/j.1439-0272.2012.01323.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/02/2012] [Indexed: 11/30/2022] Open
Abstract
This study was undertaken to investigate the cytoprotective effect of the fruit pulp of Eugenia jambolana (50-250 μg ml(-1) ) against the damage induced by H 2 O 2 (100 μm) exposure to Leydig cells in vitro. Cell survival with extract was found comparable to similar effects by N-acetyl-l-cysteine. H 2 O 2 -induced rise in thiobarbituric acid reactive substance formation and decline in the activity and expression of antioxidant enzymes like superoxide dismutase, catalase and glutathione-s-transferase were effectively checked. Cellular glutathione and total antioxidant capacity demonstrated significant improvement. The increase in expression of inducible nitric oxide (NO) synthase leading to NO production was successfully countered. Co-treatment of the extract helped in the down-regulation of caspase-3 and poly-ADP-ribose polymerase resulting in a significant reduction in Leydig cell apoptosis induced by H 2 O 2 . Upstream marker proteins of extrinsic (caspase-8, Fas, FasL) and intrinsic (caspase-9) pathway of metazoan apoptosis were identically down-regulated. The Bcl-2 family of proteins, though, remained unaffected. The extract also positively modulated the other marker proteins like c-Jun NH 2 -terminal kinase, p38, Akt, nuclear factor-κB, c-Fos, cellular FLICE-inhibitory protein, cyclooxygenase-2 and p53. Taken together, the above-mentioned findings establish the anti-oxidative and anti-apoptotic potency of the extract that ameliorates the H 2 O 2 -induced adverse effects on rat Leydig cells in vitro.
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Affiliation(s)
- H Anand
- Department of Reproductive Biomedicine, National Institute of Health and Family Welfare, New Delhi- 110067, India
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Kumar M, Sharma VL, Sehgal A, Jain M. Protective effects of green and white tea against benzo(a)pyrene induced oxidative stress and DNA damage in murine model. Nutr Cancer 2012; 64:300-6. [PMID: 22243054 DOI: 10.1080/01635581.2012.648300] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In the current investigation, the ameliorative effect of green tea (GT) and white tea (WT) against benzo(a)pyrene (BaP) induced oxidative stress and DNA damage has been studied in the livers and lungs of Balb/c mice. A single dose of BaP (125 mg/kg, b.w. orally) increased the levels of lipid peroxidation (LPO) and decreased endogenous antioxidants such as superoxide dismutase (SOD), glutahione reductase (GR), catalase (CAT), and glutathione (GSH) significantly. Pretreatment with GT and WT for 35 days before a single dose of BaP elevated the decreased activity of GR, SOD, and CAT in liver tissue and also tended to normalize the levels of GSH and LPO in both hepatic and pulmonary tissues. The percentage of DNA in comet tail and 8-hydroxy-2'-deoxyguanosine levels reflected the decreasing pattern of DNA damage from the BaP-treated group to the groups that received pretreatment with GT and WT. Our study concludes that both GT and WT are effective in combating BaP induced oxidative insult and DNA damage. However, WT was found to be more protective than GT with respect to CAT (only in the liver), percentage of DNA in comet tail (only in the lungs), GST activity, and GSH content in both the tissues.
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Affiliation(s)
- Manoj Kumar
- Department of Zoology, Panjab University, Chandigarh, India
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Bin Dajem SM, Shati AA, Adly MA, Ahmed OM, Ibrahim EH, Mostafa OMS. Green tea (Camellia sinesis) ameliorates female Schistosoma mansoni-induced changes in the liver of Balb/C mice. Saudi J Biol Sci 2011; 18:361-8. [PMID: 23961148 DOI: 10.1016/j.sjbs.2011.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 06/12/2011] [Accepted: 06/15/2011] [Indexed: 01/24/2023] Open
Abstract
This study was designed to assess the effect of green tea, an aqueous extract of Camellia sinensis, on the oxidative stress, antioxidant defense system and liver pathology of Schistosoma mansoni-infected mice. Green tea at concentration of 3% (w/v) was given orally to treated mice as sole source of drinking water from the end of the 4th week to the end of 10th week post-infection; untreated mice were allowed to drink normal water. The data of the studied S. mansoni-infected mice exhibited a suppression of hepatic total antioxidant capacity, superoxide dismutase (SOD), catalase (CAT) activity and glutathione content. The liver lipid peroxidation was deleteriously elevated in S. mansoni-infected mice. The hepatic total protein content, AST and ALT activities were profoundly decreased in the S. mansoni-infected mice. Most hepatocytes were damaged and showed abnormal microscopic appearance with aggressive necrosis. Both total protein and glycogen levels have been greatly reduced as indicated by histochemical examination. The treatment of S. mansoni-infected mice with green tea succeeded to suppress oxidative stress by decreasing the lipid peroxides but failed to significantly enhance the antioxidant defense system and deteriorated changes owing to liver damage and necrosis. In consistence with biochemical data, histopathological and histochemical data indicated that treatment of S. mansoni-infected mice with green tea could ameliorate hepatocytes thus reduce cellular necrosis and partially restore both total protein and glycogen levels. Thus, the study concluded that the green tea suppresses the oxidative stress through its constituent with free radicals scavenging properties rather than through the endogenous antioxidant defense system.
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Affiliation(s)
- Saad M Bin Dajem
- Biology Department, Faculty of Science, King Khalid University, Abha, P.O. Box 9004, Saudi Arabia
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El-Beshbishy HA, Bahashwan SA. Hypoglycemic effect of basil (Ocimum basilicum) aqueous extract is mediated through inhibition of α-glucosidase and α-amylase activities. Toxicol Ind Health 2011; 28:42-50. [DOI: 10.1177/0748233711403193] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study investigated the in vitro hypoglycemic activity of basil ( Ocimum basilicum) aqueous extract. Preliminary phytochemical screening of the extract revealed the presence of reducing sugars, cardiac glycosides, tannins, saponins, glycosides, flavonoids and steroids. The total polyphenols content (TPC), flavonoids content (FC), percentage diphenylpicrylhydrazyl (DPPH·) radical inhibition and total antioxidant status (TAS) were estimated. The FC was 41 ± 2.2 rutin/g dry extract, the TPC was 146 ± 5.26 mg catechin/g dry extract and the TAS was 5.12 ± 0.7 mmol/L. The %DPPH· free radical inhibition was 60%, 54%, 49% and 43%, respectively, for different extract concentrations; 20, 18.2, 16.3 and 14.5 mg/ml, respectively. The extract elicited significant dose-dependent pattern against rat intestinal sucrase (RIS; IC50 = 36.72 mg/ml), rat intestinal maltase (RIM; IC50 = 21.31 mg/ml) and porcine pancreatic α-amylase (PPA; IC50 = 42.50 mg/ml) inhibitory activities. The inhibition was greater against maltase compared with sucrase. These effects may be attributed to the high TPC and FC levels. The linear regression analysis revealed strong significant positive correlations between %DPPH· radical inhibition and each of %RIS, %RIM and %PPA inhibiting activity. Also, strong significant positive correlations between %RIS and either %RIM or %PPA inhibition activity were observed. We concluded therefore that basil aqueous extract via antioxidant and possibly α-glucosidase and α-amylase inhibiting activities, offered positive benefits to control diabetes.
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Affiliation(s)
- HA El-Beshbishy
- Medical Laboratories Technology Department, Faculty of Applied Medical Sciences, Taibah University, Madinah, Saudi Arabia
- Biochemistry Department, Faculty of Pharmacy, Nasr City, Cairo, Egypt
| | - SA Bahashwan
- Pharmacy Section, College of Health Sciences, Taibah University, Madinah, Saudi Arabia
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