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Alaziqi B, Beckitt L, Townsend DJ, Morgan J, Price R, Maerivoet A, Madine J, Rochester D, Akien G, Middleton DA. Characterization of Olive Oil Phenolic Extracts and Their Effects on the Aggregation of the Alzheimer's Amyloid-β Peptide and Tau. ACS OMEGA 2024; 9:32557-32578. [PMID: 39100310 PMCID: PMC11292642 DOI: 10.1021/acsomega.4c01281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 06/17/2024] [Accepted: 06/28/2024] [Indexed: 08/06/2024]
Abstract
The dietary consumption of extra virgin olive oil (EVOO) is believed to slow the progression of Alzheimer's disease (AD) symptoms. Its protective mechanisms are unclear, but specific EVOO phenolic compounds can individually impede the aggregation of amyloid-β (Aβ) peptides and the microtubule-associated protein tau, two important pathological manifestations of AD. It is unknown, however, whether the numerous and variable phenolic compounds that are consumed in dietary EVOO can collectively alter tau and Aβ aggregation as effectively as the individual compounds. The activity of these complex mixtures against Aβ and tau may be moderated by competition between active and nonactive phenolic components and by extensive derivatizations and isomerization. Here, phenolic mixtures extracted from two different EVOO sources are characterized and tested for how they modulate the aggregation of Aβ40 peptide and tau peptides in vitro. The chromatographic and NMR analysis of Greek and Saudi Arabian EVOO phenolic extracts reveals that they have different concentration profiles, and over 30 compounds are identified. Thioflavin T fluorescence and circular dichroism measurements show that relatively low concentrations (<20 μg/mL) of the Greek and Saudi extracts reduce the rate of Aβ40 aggregation and fibril mass, despite the extracts having different phenolic profiles. By contrast, the Greek extract reduces the rate of tau aggregation only at very high phenolic concentrations (>100 μg/mL). Most compounds in the extracts bind to preformed Aβ40 fibrils and release soluble Aβ oligomers that are mildly toxic to SH-SY5Y cells. Much higher (500 μg/mL) extract concentrations are required to remodel tau filaments into oligomers, and a minimal binding of phenolic compounds to the preformed filaments is observed. It is concluded that EVOO extracts having different phenol profiles are similarly capable of modulating Aβ40 aggregation and fibril morphology in vitro at relatively low concentrations but are less efficient at modulating tau aggregation. Over 2 M tonnes of EVOO are consumed globally each year as part of the Mediterranean diet, and the results here provide motivation for further clinical interrogation of the antiaggregation properties of EVOO as a potential protective mechanism against AD.
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Affiliation(s)
- Bakri Alaziqi
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
- Department
of Chemistry, University College in Al-Qunfudah,
Umm Al-Qura University, Makkah
Al-Mukarramah 1109, Saudi
Arabia
| | - Liam Beckitt
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - David J. Townsend
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - Jasmine Morgan
- Department
of Biology, Edge Hill University, Ormskirk L39 4QP, United Kingdom
| | - Rebecca Price
- Department
of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular
and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
| | - Alana Maerivoet
- Department
of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular
and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
| | - Jillian Madine
- Department
of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular
and Integrative Biology, University of Liverpool, Liverpool L69 7ZB, United Kingdom
| | - David Rochester
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - Geoffrey Akien
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - David A. Middleton
- Department
of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom
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Zheng C, Wang Y, Bi B, Zhou W, Cao X, Zhang C, Lu W, Sun Y, Qu J, Lv W. Gallic acid ameliorates endometrial hyperplasia through the inhibition of the PI3K/AKT pathway and the down-regulation of cyclin D1 expression. J Pharmacol Sci 2024; 155:1-13. [PMID: 38553133 DOI: 10.1016/j.jphs.2024.02.015] [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: 10/14/2023] [Revised: 02/07/2024] [Accepted: 02/27/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Gallic acid (GA) is an organic compound with phenolic properties that occurs naturally and can be found in Guizhi Fuling capsules, showcasing a wide range of biological functionalities. PURPOSE The objective of this study was to examine the influence of GA on endometrial hyperplasia (EH) and elucidate its underlying mechanism. METHODS Initially, the induction of EH was achieved by administering estradiol to mice via continuous subcutaneous injection for a duration of 21 days. Concurrently, GA treatment was administered, and subsequently, the uterine tissue structure was assessed using hematoxylin and eosin (H&E) staining. Following this, the proliferation of human endometrial cells treated by GA was determined utilizing the CCK-8 method. Furthermore, network pharmacology and single-cell-RNA-seq data were employed to identify the target of GA action. In addition, we will employ immunofluorescence (IF), immunohistochemistry (IHC), flow cytometry, western blot and RT-qPCR methodologies to investigate the impact of GA on the expression level of cyclin D1, PI3K, p-PI3K, AKT, p-AKT. RESULTS GA treatment ameliorated histopathological alterations in the uterus and suppress proliferation. Estradiol stimulation can activate the PI3K/AKT pathway, leading to up-regulation of cyclin D1 expression, whereas GA treatment results in down-regulation of its expression. CONCLUSIONS The expression of cyclin D1 is down-regulated by GA through the inhibition of the PI3K/AKT pathway, effectively mitigating estradiol-induced EH in mice.
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Affiliation(s)
- Caijie Zheng
- The Second Clinical School of Zhejiang Chinese Medicine University, Hangzhou, 310053, China
| | - Yi Wang
- Colon and Rectal Surgery, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing, 210001, China
| | - Beilei Bi
- Department of Gynecology, Tongde Hospital of Zhejiang Province, 234 Gucui Road, Hangzhou, 310012, China
| | - Wencheng Zhou
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, 310006, China
| | - Xinran Cao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Chenyang Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Wentian Lu
- The First Clinical Medical College, Nanjing University of Chinese Medicine, 155 Hanzhong Road, Nanjing, Jiangsu, 210029, China
| | - Yang Sun
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China; Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor, Nanjing, Jiangsu, 210029, China.
| | - Jiao Qu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China.
| | - Wen Lv
- Department of Gynecology, Tongde Hospital of Zhejiang Province, 234 Gucui Road, Hangzhou, 310012, China.
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Dantas-Berto ILO, Viana RLS, de Medeiros MJC, Nobre LTDB, Luchiari AC, Medeiros VP, Paiva WS, Melo-Silveira RF, Rocha HAO. Toward Enhanced Antioxidant and Protective Potential: Conjugation of Corn Cob Xylan with Gallic Acid as a Novel Approach. Int J Mol Sci 2024; 25:2855. [PMID: 38474103 DOI: 10.3390/ijms25052855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 02/14/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
Maize ranks as the second most widely produced crop globally, yielding approximately 1.2 billion tons, with corn cob being its primary byproduct, constituting 18 kg per 100 kg of corn. Agricultural corn production generates bioactive polysaccharide-rich byproducts, including xylan (Xyl). In this study, we used the redox method to modify corn cob xylan with gallic acid, aiming to enhance its antioxidant and protective capacity against oxidative stress. The conjugation process resulted in a new molecule termed conjugated xylan-gallic acid (Xyl-GA), exhibiting notable improvements in various antioxidant parameters, including total antioxidant capacity (1.4-fold increase), reducing power (1.2-fold increase), hydroxyl radical scavenging (1.6-fold increase), and cupric chelation (27.5-fold increase) when compared with unmodified Xyl. At a concentration of 1 mg/mL, Xyl-GA demonstrated no cytotoxicity, significantly increased fibroblast cell viability (approximately 80%), and effectively mitigated intracellular ROS levels (reduced by 100%) following oxidative damage induced by H2O2. Furthermore, Xyl-GA exhibited non-toxicity toward zebrafish embryos, offered protection against H2O2-induced stress, and reduced the rate of cells undergoing apoptosis resulting from H2O2 exposure. In conclusion, our findings suggest that Xyl-GA possesses potential therapeutic value in addressing oxidative stress-related disturbances. Further investigations are warranted to elucidate the molecular structure of this novel compound and establish correlations with its pharmacological activities.
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Affiliation(s)
- Isabelle Luna Oliveira Dantas-Berto
- Graduate Program of Health Sciences, Federal University of Rio Grande do Norte (UFRN), Natal 59078-970, RN, Brazil
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
| | - Rony Lucas Silva Viana
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
| | - Mayara Jane Campos de Medeiros
- Coordination Chemistry and Polymers Laboratory (LQCPol), Department of Chemistry, Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN), Natal 59078-970, RN, Brazil
| | - Leonardo Thiago Duarte Barreto Nobre
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
| | - Ana Carolina Luchiari
- Laboratory of Ornamental Fish, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | | | - Weslley Souza Paiva
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
| | - Raniere Fagundes Melo-Silveira
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
| | - Hugo Alexandre Oliveira Rocha
- Graduate Program of Health Sciences, Federal University of Rio Grande do Norte (UFRN), Natal 59078-970, RN, Brazil
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Graduate Program of Biochemistry and Molecular Biology, Bioscience Center, Federal University of Rio Grande do Norte-UFRN, Natal 59078-970, RN, Brazil
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Morphological, immunohistochemical, and biochemical study on the ameliorative effect of gallic acid against bisphenol A-induced nephrotoxicity in male albino rats. Sci Rep 2023; 13:1732. [PMID: 36720896 PMCID: PMC9889795 DOI: 10.1038/s41598-023-28860-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/25/2023] [Indexed: 02/01/2023] Open
Abstract
This study aimed to determine the effect of gallic acid (GA) on ameliorating bisphenol A (BPA) nephrotoxicity in male rat kidneys. Forty rats were assigned randomly into two groups: control (ten animals) and BPA (40 mg/kg bwt) (thirty animals), the second group was divided into three subgroups: BPA alone, BPA + G50 (50 mg/kg bwt), and BPA + G200 (200 mg/kg bwt). The biochemical analysis included measurements of the contents of nitric oxide, lipid peroxidation, reactive oxygen species, and cytokines (interleukin-1α and interleukin-6) in the kidney. The antioxidant enzymes catalase and superoxide dismutase were also measured in the kidney. Kidney function was assessed by determining uric acid, urea, and creatinine levels. The morphological investigations included hematoxylin and eosin staining for assessing the general histology and determining the glomerular and corpuscular areas, the tubular cell degeneration mean area, and the mean leukocyte infiltration area. Also, collagen fiber intensity and polysaccharide content were analyzed. Furthermore, immunohistochemical, morphometric, and ultrastructural studies were carried out. The results revealed morphological, immunohistochemical, and biochemical alterations in the kidney. Most of these changes showed a satisfactory improvement of kidney damage when BPA-administered rats were treated with GA at both doses. In conclusion, GA exhibited a strong protective effect against BPA-induced nephrotoxicity.
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Antioxidant Activity of Fucoidan Modified with Gallic Acid Using the Redox Method. Mar Drugs 2022; 20:md20080490. [PMID: 36005493 PMCID: PMC9410456 DOI: 10.3390/md20080490] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/24/2022] [Accepted: 07/27/2022] [Indexed: 01/25/2023] Open
Abstract
Antioxidant compounds decrease the amount of intracellular reactive oxygen species (ROS) and, consequently, reduce the deleterious effects of ROS in osteoblasts. Here, we modified a 21 kDa fucoidan (FucA) with gallic acid (GA) using the redox method, to potentiate its antioxidant/protective capacity on pre-osteoblast-like cells (MC3T3) against oxidative stress. The 20 kDa FucA-GA contains 37 ± 3.0 mg GA per gram of FucA. FucA-GA was the most efficient antioxidant agent in terms of total antioxidant capacity (2.5 times), reducing power (five times), copper chelation (three times), and superoxide radical scavenging (2 times). Exposure of MC3T3 cells to H2O2 increased ROS levels and activated caspase-3 along with caspase-9. In addition, the cell viability decreased approximately 80%. FucA-GA also provided the most effective protection against oxidative damage caused by H2O2. Treatment with FucA-GA (1.0 mg/mL) increased cell viability (~80%) and decreased intracellular ROS (100%) and caspase activation (~80%). In addition, Fuc-GA (0.1 mg/mL) abolished H2O2-induced oxidative stress in zebra fish embryos. Overall, FucA-GA protected MC3T3 cells from oxidative stress and could represent a possible adjuvant for the treatment of bone fragility by counteracting oxidative phenomena.
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Khémiri I, Essghaier B, Sadfi-Zouaoui N, Bitri L. Antioxidant and Antimicrobial Potentials of Seed Oil from Carthamus tinctorius L. in the Management of Skin Injuries. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:4103418. [PMID: 33204394 PMCID: PMC7661123 DOI: 10.1155/2020/4103418] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/20/2020] [Indexed: 12/13/2022]
Abstract
Infection of skin injuries by pathogenic microbial strains is generally associated if not treated with a lasting wound bed oxidative stress status, a delay in healing process, and even wound chronicity with several human health complications. The aim of the current study was to explore the antioxidant and antimicrobial potentialities of safflower (Carthamus tinctorius L.) extracted oil from seeds by cold pressing which would be beneficial in the management of skin wounds. Antioxidant capacity of the oil was evaluated (scavenging ability against 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) and 2,2'-azino-bis 3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and ferric reducing antioxidant power (FRAP)). Total phenolic, total flavonoid, total carotenoid, and total chlorophyll contents were determined. Antimicrobial activities of safflower oil were tested against 10 skin pathogenic microorganisms: 4 bacterial strains (Escherichia coli, Enterobacter cloacae, Staphylococcus aureus, and Streptococcus agalactiae), 3 yeast species strains (Candida albicans, Candida parapsilosis, and Candida sake), and 3 fungi species (Aspergillus niger, Penicillium digitatum, and Fusarium oxysporum). A notable antioxidant capacity was demonstrated for the tested oil that exhibited moreover high antibacterial effects by both bacteriostatic and bactericidal pathways including lysozyme activity. An antifungal effect was further observed on the spore's germination. Safflower oil could be considered as a good natural alternative remedy in the management of skin wounds and their possible microbial infections.
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Affiliation(s)
- Ikram Khémiri
- Unité de Physiologie des Systèmes de Régulations et des Adaptations, Faculté des Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire, 2092 Tunis, Tunisia
| | - Badiaa Essghaier
- Laboratoire de Mycologie, Pathologies et Biomarqueurs, Faculté des Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire, 2092 Tunis, Tunisia
| | - Najla Sadfi-Zouaoui
- Laboratoire de Mycologie, Pathologies et Biomarqueurs, Faculté des Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire, 2092 Tunis, Tunisia
| | - Lotfi Bitri
- Unité de Physiologie des Systèmes de Régulations et des Adaptations, Faculté des Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire, 2092 Tunis, Tunisia
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El Hilali H, El Hilali F, Porter SEG, Ghali SA, Meyls HM, Ouazzani N, Laziri F, Barber A. Olive oil varieties cultivated in Morocco reduce reactive oxygen species and cell viability of human cervical cancer cells. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2020. [DOI: 10.3233/mnm-190390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hajar El Hilali
- Department of Biology, Moulay Ismail University, Meknès, Morocco
| | - Fatiha El Hilali
- Department of Biology, Moulay Ismail University, Meknès, Morocco
| | - Sarah E. G. Porter
- Department of Chemistry and Physics, Longwood University, Farmville, VA, USA
| | - Sarah A. Ghali
- Department of Chemistry and Physics, Longwood University, Farmville, VA, USA
| | - Hannah M. Meyls
- Department of Chemistry and Physics, Longwood University, Farmville, VA, USA
| | | | - Fatiha Laziri
- Department of Biology, Moulay Ismail University, Meknès, Morocco
| | - Amorette Barber
- Department of Biological and Environmental Sciences, Longwood University, Farmville, VA, USA
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Khalatbary AR, Ghabaee DNZ, Ahmadvand H, Amiri FT, Lehi ST. Deltamethrin-Induced Hepatotoxicity and Virgin Olive Oil Consumption: An Experimental Study. IRANIAN JOURNAL OF MEDICAL SCIENCES 2017; 42:586-592. [PMID: 29184267 PMCID: PMC5684380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Deltamethrin (DM) is a synthetic pyrethroid insecticide which can lead to pathological effects in mammals through oxidative stress. On the other hand, virgin olive oil (VOO) is a rich source of phenolic compounds with antioxidants. The aim of the present study was to determine the protective effects of VOO against DM-induced hepatotoxicity. METHODS Thirty-six mice were randomly separated into 4 groups: vehicle group, VOO group, DM group, and DM plus VOO group. Immunohistochemistry of PARP, COX-2, and caspase-3 with the biochemical analysis of malondialdehyde and total antioxidant capacity levels were performed in the liver samples 5 weeks after gavaging. Statistical analysis was performed using SPSS, version 15. The data were compared between the groups using the Tukey multiple comparison tests and the analysis of the variance. A P value <0.05 was considered significant. RESULTS The malondialdehyde level in the liver was increased in the DM group (71.18±0.01), whereas it was significantly (P=0.001) decreased after VOO administration in the DM plus VOO group (39.59±2.43). While the total antioxidant capacity level in the liver was decreased in the DM group (3.05±0.05), it was significantly increased (P=0.03) after VOO administration in the DM plus VOO group (3.95±0.04). A greater expression of caspase-3 (P=0.008), COX-2 (P =0.004), and PARP (P 0.006) could be detected in the DM group, while it was significantly (P=0.009) attenuated in the DM plus VOO group. Also, the degeneration of hepatocytes, which was detected in the DM group, was attenuated after VOO consumption. CONCLUSIONS VOO exerted protective effects against DM-induced hepatotoxicity, which might be associated with its anti-apoptotic, anti-inflammatory, and antioxidative properties.
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Affiliation(s)
- Ali Reza Khalatbary
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran,Correspondence: Ali Reza Khalatbary, PhD; Department of Anatomical Sciences, School of Medicine, Mazandaran University of Medical Sciences, 20th km of Khazar Abad Road, Sari, Iran Tel: +98 912 2490583 Fax: +98 33543087
| | | | - Hassan Ahmadvand
- Department of Biochemistry, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran,Razi Herbal Medicine Research Center, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Fereshteh Talebpour Amiri
- Molecular and Cell Biology Research Center, Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Somaieh Tadayoni Lehi
- Department of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Can ÖD, Turan N, Demir Özkay Ü, Öztürk Y. Antidepressant-like effect of gallic acid in mice: Dual involvement of serotonergic and catecholaminergic systems. Life Sci 2017; 190:110-117. [PMID: 28942286 DOI: 10.1016/j.lfs.2017.09.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/12/2017] [Accepted: 09/19/2017] [Indexed: 02/06/2023]
Abstract
AIMS This study was planned to examine the antidepressant potency of gallic acid (30 and 60mg/kg), a phenolic acid widely distributed in nature, together with its possible underlying monoaminergic mechanisms. MAIN METHODS Antidepressant-like activity was assessed using the tail suspension (TST) and the modified forced swimming tests (MFST). Locomotor activity was evaluated in an activity cage. KEY FINDINGS Administration of gallic acid at 60mg/kg reduced the immobility duration of mice in both the TST and MFST without any changes in the locomotor activity. The anti-immobility effect observed in the TST was abolished with pre-treatment of p-chlorophenylalanine methyl ester (an inhibitor of serotonin synthesis; 100mg/kg i.p. administered for 4-consecutive days), ketanserin (a 5-HT2A/2C antagonist; 1mg/kg i.p.), ondansetron (a 5-HT3 antagonist; 0.3mg/kg i.p.), α-methyl-para-tyrosine methyl ester (an inhibitor of catecholamine synthesis; 100mg/kg i.p.), phentolamine (non-selective alpha-adrenoceptor antagonist; 5mg/kg i.p.), SCH 23390 (a dopamine D1 antagonist; 0.05mg/kg s.c.), and sulpiride (a dopamine D2/D3 antagonist; 50mg/kg i.p.). However, NAN 190 (a 5-HT1A antagonist; 0.5mg/kg i.p.) and propranolol (a non-selective β-adrenoceptor antagonist; 5mg/kg i.p.) pre-treatments were ineffective at reversing the antidepressant-like effects of gallic acid. SIGNIFICANCE The results of the present study indicate that gallic acid seems to have a dual mechanism of action by increasing not only serotonin but also catecholamine levels in synaptic clefts of the central nervous system. Further alpha adrenergic, 5-HT2A/2C and 5-HT3 serotonergic, and D1, D2, and D3 dopaminergic receptors also seem to be involved in this antidepressant-like activity.
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Affiliation(s)
- Özgür Devrim Can
- Anadolu University, Faculty of Pharmacy, Department of Pharmacology, 26470 Eskişehir, Turkey.
| | - Nazlı Turan
- Anadolu University, Faculty of Pharmacy, Department of Pharmacology, 26470 Eskişehir, Turkey
| | - Ümide Demir Özkay
- Anadolu University, Faculty of Pharmacy, Department of Pharmacology, 26470 Eskişehir, Turkey
| | - Yusuf Öztürk
- Anadolu University, Faculty of Pharmacy, Department of Pharmacology, 26470 Eskişehir, Turkey
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Vergauwen H, Prims S, Degroote J, Wang W, Casteleyn C, van Cruchten S, de Smet S, Michiels J, van Ginneken C. In Vitro Investigation of Six Antioxidants for Pig Diets. Antioxidants (Basel) 2016; 5:antiox5040041. [PMID: 27845706 PMCID: PMC5187539 DOI: 10.3390/antiox5040041] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 10/03/2016] [Accepted: 11/02/2016] [Indexed: 12/26/2022] Open
Abstract
Oxidative stress in the small intestinal epithelium can lead to barrier malfunction. In this study, the effect of rosmarinic acid (RA), quercetin (Que), gallic acid (GA), lipoic acid (LA), ethoxyquin (ETQ) and Se-methionine (SeMet) pre-treatments using 2 mM Trolox as a control on the viability and the generation of intracellular reactive oxygen species (iROS) of oxidatively (H₂O₂) stressed intestinal porcine epithelial cells (IPEC-J2) was investigated. A neutral red assay showed that RA (50-400 µM), Que (12.5-200 µM), GA (50-400 µM), ETQ (6.25-100 µM), and SeMet (125-1000 µM) pre-treatments but not LA significantly increased the viability of H₂O₂-stressed IPEC-J2 cells (p < 0.05). A 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H₂DCFDA) fluorescent probe showed that RA (100-600 µM), Que (25-800 µM), ETQ (3.125-100 µM) and SeMet (500-2000 µM) pre-treatments significantly reduced iROS in IPEC-J2 monolayers (p < 0.05). Moreover, RA and Que were most effective in reducing iROS. Therefore, the effects of RA and Que on barrier functioning in vitro were examined. RA and Que pre-treatments significantly decreased fluorescein isothiocyanate (FITC)-conjugated dextran-4 (4 kDa) permeability and transepithelial electrical resistance (TEER) of an IPEC-J2 cell monolayer (p < 0.05). These in vitro results of RA and Que hold promise for their use as antioxidants in pig feed.
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Affiliation(s)
- Hans Vergauwen
- Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium.
| | - Sara Prims
- Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium.
| | - Jeroen Degroote
- Department of Applied Biosciences, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium.
| | - Wei Wang
- Department of Applied Biosciences, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium.
- Laboratory for Animal Nutrition and Animal Product Quality (LANUPRO), Department of Animal Production, Faculty of Bioscience Engineering, Ghent University, Melle 9090, Belgium.
| | - Christophe Casteleyn
- Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium.
| | - Steven van Cruchten
- Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium.
| | - Stefaan de Smet
- Laboratory for Animal Nutrition and Animal Product Quality (LANUPRO), Department of Animal Production, Faculty of Bioscience Engineering, Ghent University, Melle 9090, Belgium.
| | - Joris Michiels
- Department of Applied Biosciences, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium.
| | - Chris van Ginneken
- Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium.
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Virgin olive oil ameliorates deltamethrin-induced nephrotoxicity in mice: A biochemical and immunohistochemical assessment. Toxicol Rep 2016; 3:584-590. [PMID: 28959581 PMCID: PMC5616020 DOI: 10.1016/j.toxrep.2016.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/23/2016] [Accepted: 07/25/2016] [Indexed: 12/16/2022] Open
Abstract
Objective A major class of synthetic pyrethroid insecticide, deltamethrin (DM), can elicit pathophysiological effects through oxidative stress in non-targeted organisms such as mammals. There is accumulating evidence that virgin olive oil (VOO), a rich source of polyphenolic components, have anti-oxidant, anti-inflammatory, and anti-apoptotic properties. This study aimed to determine the protective and ameliorative effects of VOO against DM-induced nephrotoxicity. Methods & materials Mice were randomly divided into four equal groups: DM group, DM plus VOO group, VOO group, and vehicle group. Five weeks after gavaging, kidney samples were taken for biochemical assessment of malondialdehyde (MDA), glutathione (GSH) and catalase (CAT), and for immunohistochemical assessment of caspase-3, cyclooxygenase-2 (cox-2) and poly (ADP-ribose) polymerase (PARP). Results The MDA level in kidney was increased in the DM group, which was significantly decreased after VOO administration in the DM plus VOO group. The GSH level and CAT activiy in kidney were decreased in the DM group, which were significantly increased after VOO administration in the DM plus VOO group. Greater expression of caspase-3, cox-2, and PARP could be detected in the DM group, which was significantly attenuated in the DM plus VOO group. Also, the histopathological changes which were detected in the DM group attenuated after VOO consumption. Conclusion Virgin olive oil exerted protective effects against deltamethrin-induced nephrotoxicity, which might be associated with its anti-apoptotic, anti-inflammatory, and anti-oxidative properties.
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Khalatbary AR, Ghaffari E, Mohammadnegad B. Protective Role of Oleuropein against Acute Deltamethrin-Induced Neurotoxicity in Rat Brain. IRANIAN BIOMEDICAL JOURNAL 2015. [PMID: 26216399 PMCID: PMC4649861 DOI: 10.7508/ibj.2015.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Deltamethrin (DM) is a synthetic pyrethroid insecticide that can elicit neurotoxicity, leading to apoptosis. There is accumulating evidence that oleuropein (OE) has anti-apoptotic effect. The purpose of this study was to determine the anti-apoptotic effect of OE pretreatment in the neuronal cells of cerebral cortex. METHODS Rats were randomly divided into four groups each containing five rats: DM-treated group (12.5 mg/kg, a single dose), OE-treated group (20 mg/kg per day), DM + OE-treated group, and vehicle group. Sections of the brain were obtained 24 hours after DM injection and studied for histopathological and immunohistochemistry assessment. RESULTS The histopathological assessments showed lesser characteristics of neural degeneration in DM + OE group compared with DM group. Greater Bcl-2 and attenuated Bax expression could be detected in the DM + OE treated-mice compared with DM group. CONCLUSION The results suggested that DM-induced neurotoxicity can be subsided by OE.
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Affiliation(s)
- Ali Reza Khalatbary
- Molecular and Cell Biology Research Center, Dept. of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Elmira Ghaffari
- Dept. of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Behrooz Mohammadnegad
- Dept. of Anatomy, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Sevgi K, Tepe B, Sarikurkcu C. Antioxidant and DNA damage protection potentials of selected phenolic acids. Food Chem Toxicol 2015; 77:12-21. [PMID: 25542528 DOI: 10.1016/j.fct.2014.12.006] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 11/30/2014] [Accepted: 12/04/2014] [Indexed: 02/08/2023]
Abstract
In this study, ten different phenolic acids (caffeic, chlorogenic, cinnamic, ferulic, gallic, p-hydroxybenzoic, protocatechuic, rosmarinic, syringic, and vanillic acids) were evaluated for their antioxidant and DNA damage protection potentials. Antioxidant activity was evaluated by using four different test systems named as β-carotene bleaching, DPPH free radical scavenging, reducing power and chelating effect. In all test systems, rosmarinic acid showed the maximum activity potential, while protocatechuic acid was determined as the weakest antioxidant in β-carotene bleaching, DPPH free radical scavenging, and chelating effect assays. Phenolic acids were also screened for their protective effects on pBR322 plasmid DNA against the mutagenic and toxic effects of UV and H2O2. Ferulic acid was found as the most active phytochemical among the others. Even at the lowest concentration value (0.002 mg/ml), ferulic acid protected all of the bands in the presence of H2O2 and UV. It is followed by caffeic, rosmarinic, and vanillic acids. On the other hand, cinnamic acid (at 0.002 mg/ml), gallic acid (at 0.002 mg/ml), p-hydroxybenzoic acid (at 0.002 and 0.004 mg/ml), and protocatechuic acid (at 0.002 and 0.004 mg/ml) could not protect plasmid DNA.
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Affiliation(s)
- Kemal Sevgi
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Kilis 7 Aralık University, TR-79000 Kilis, Turkey
| | - Bektas Tepe
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Kilis 7 Aralık University, TR-79000 Kilis, Turkey.
| | - Cengiz Sarikurkcu
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Suleyman Demirel University, TR-32000 Isparta, Turkey
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Jia K, Sun D, Ling S, Tian Y, Yang X, Sui J, Tang B, Wang L. Activated δ‑opioid receptors inhibit hydrogen peroxide‑induced apoptosis in liver cancer cells through the PKC/ERK signaling pathway. Mol Med Rep 2014; 10:839-47. [PMID: 24912447 DOI: 10.3892/mmr.2014.2301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 04/14/2014] [Indexed: 11/06/2022] Open
Abstract
Apoptotic liver cancer cells have important roles in liver tumorigenesis and liver cancer progression. Recent studies have shown that δ‑opioid receptors are highly expressed in human liver and liver cancer cells. The present study aimed to investigate the role of activated δ‑opioid receptors on human liver cancer cell apoptosis and its interrelation with the mitochondria and the protein kinase C/extracellular‑signal‑regulated kinase (PKC/ERK) signaling pathway. H2O2 was used to induce apoptosis in human liver cancer cells. During apoptosis, mitochondrial transmembrane potentials were observed to decrease, cytochrome c expression was found to increase and B cell lymphoma 2 (Bcl‑2) expression decreased. These findings suggested that H2O2‑induced apoptosis was mediated through the mitochondrial pathway. Of note, activated δ‑opioid receptors were observed to inhibit H2O2‑induced apoptosis in human liver cancer cells. Following δ‑opioid receptor activation, the number of apoptotic liver cancer cells decreased, mitochondrial transmembrane potentials were restored, cytoplasmic cytochrome c and Bcl‑2‑associated X protein expression decreased and Bcl‑2 expression increased. These data suggested that δ‑opioid receptor activation inhibited mitochondria‑mediated apoptosis. In addition, activation of δ‑opioid receptors was observed to increase the expression of PKC and ERK in human liver cancer cells. Furthermore, upon inhibition of the PKC/ERK signaling pathway, the protective effect associated with the δ‑opioid receptor on liver cancer cell apoptosis was inhibited, which was not associated with the status of δ‑opioid receptor activation. These findings suggested that the PKC/ERK signaling pathway has an important role in δ‑opioid receptor‑mediated inhibition of apoptosis in human liver cancer cells.
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Affiliation(s)
- Kaiqi Jia
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Deguang Sun
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Sunbin Ling
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Yu Tian
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Xuejun Yang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Jidong Sui
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Bo Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi 541001, P.R. China
| | - Liming Wang
- Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
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Antiapoptotic actions of methyl gallate on neonatal rat cardiac myocytes exposed to H2O2. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:657512. [PMID: 24672637 PMCID: PMC3942100 DOI: 10.1155/2014/657512] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 10/15/2013] [Accepted: 11/11/2013] [Indexed: 11/18/2022]
Abstract
Reactive oxygen species trigger cardiomyocyte cell death via increased oxidative stress and have been implicated in the pathogenesis of cardiovascular diseases. The prevention of cardiomyocyte apoptosis is a putative therapeutic target in cardioprotection. Polyphenol intake has been associated with reduced incidences of cardiovascular disease and better overall health. Polyphenols like epigallocatechin gallate (EGCG) can reduce apoptosis of cardiomyocytes, resulting in better health outcomes in animal models of cardiac disorders. Here, we analyzed whether the antioxidant N-acetyl cysteine (NAC) or polyphenols EGCG, gallic acid (GA) or methyl gallate (MG) can protect cardiomyocytes from cobalt or H2O2-induced stress. We demonstrate that MG can uphold viability of neonatal rat cardiomyocytes exposed to H2O2 by diminishing intracellular ROS, maintaining mitochondrial membrane potential, augmenting endogenous glutathione, and reducing apoptosis as evidenced by impaired Annexin V/PI staining, prevention of DNA fragmentation, and cleaved caspase-9 accumulation. These findings suggest a therapeutic value for MG in cardioprotection.
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Frankel E, Bakhouche A, Lozano-Sánchez J, Segura-Carretero A, Fernández-Gutiérrez A. Literature review on production process to obtain extra virgin olive oil enriched in bioactive compounds. Potential use of byproducts as alternative sources of polyphenols. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:5179-5188. [PMID: 23656613 DOI: 10.1021/jf400806z] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This review describes the olive oil production process to obtain extra virgin olive oil (EVOO) enriched in polyphenol and byproducts generated as sources of antioxidants. EVOO is obtained exclusively by mechanical and physical processes including collecting, washing, and crushing of olives, malaxation of olive paste, centrifugation, storage, and filtration. The effect of each step is discussed to minimize losses of polyphenols from large quantities of wastes. Phenolic compounds including phenolic acids, alcohols, secoiridoids, lignans, and flavonoids are characterized in olive oil mill wastewater, olive pomace, storage byproducts, and filter cake. Different industrial pilot plant processes are developed to recover phenolic compounds from olive oil byproducts with antioxidant and bioactive properties. The technological information compiled in this review will help olive oil producers to improve EVOO quality and establish new processes to obtain valuable extracts enriched in polyphenols from byproducts with food ingredient applications.
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Affiliation(s)
- Edwin Frankel
- Olive Center, University of California, Davis, California, United States
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Erol Ö, Arda N, Erdem G. Phenols of virgin olive oil protects nuclear DNA against oxidative damage in HeLa cells. Food Chem Toxicol 2012; 50:3475-9. [PMID: 22877972 DOI: 10.1016/j.fct.2012.07.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 07/17/2012] [Accepted: 07/24/2012] [Indexed: 12/31/2022]
Abstract
Oxidative DNA damage is an inescapable consequence for cells constantly exposed to oxidative stress derived from normal metabolic processes and from environmental factors. Phenolic compounds, which have strong antioxidant activity, prevent DNA damage by protecting the cells against harmful effects of oxidative stress. In this study, the effect of virgin olive oil phenolic extract (OOPE) was investigated on H2O2-induced mitochondrial DNA (mtDNA) and nuclear DNA (nDNA) damage in HeLa cells. DNA damage was assessed in mitochondria and two nuclear regions by using quantitative PCR (QPCR) assay. The cells were pre-treated with non-cytotoxic doses of OOPE for 4 h, and DNA damage was determined. OOPE alone does not change the steady-state level of DNA damage. The oxidative stress generated with 750 μM H2O2 caused two times greater damages in mtDNA compared to nDNA, which included the nonexpressed β-globin region (1.507±0.110 lesions/10 kb) and the expressed APEX1 gene (1.623±0.243 lesions/10 kb) with respect to the control region. When cells were preincubated with OOPE for 4 h, nDNA damage under stress condition was completely inhibited; however, mtDNA damage was not affected by this procedure. These results suggest that OOPE has a protective effect against nDNA damage in HeLa cells.
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Affiliation(s)
- Özlem Erol
- Department of Biology, Faculty of Arts and Sciences, University of Çanakkale Onsekiz Mart, Terzioglu Campus, 17020 Çanakkale, Turkey.
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