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Comakli V, Adem S, Oztekin A, Demirdag R. Screening inhibitory effects of selected flavonoids on human recombinant aldose reductase enzyme: in vitro and in silico study. Arch Physiol Biochem 2022; 128:1368-1374. [PMID: 32463711 DOI: 10.1080/13813455.2020.1771377] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Aldose reductase (AR) is the first enzyme of the polyol pathway that has physiological importance under hyperglycaemic conditions. The article has been focussed on AR enzyme inhibition by selected compounds. For this purpose, the in vitro inhibitory effects of various compounds on commercially available recombinant human AR (rAR) enzyme activity were investigated. The IC50 values of compounds on rAR inhibition effect were found for 6-hydroxy flavone, syringic acid, diosmetin, 6-fluoroflavone, 7-hydroxy-4'-nitroisoflavone, myricetin as 2.05, 2.97, 15.75, 16.1, 49.5, and 63 µM, respectively. 6-Hydroxy flavone and syringic acid competitively inhibited rAR with respect to the NADPH with Ki values 0.509 ± 0.036 and 0.842 ± 0.012 µM. In addition, docking studies were performed to evaluate the potential enzyme binding positions of the compounds. Our in vitro and in silico results indicated that the 6-hydroxy flavone may be a good lead compound in the development of AR inhibitors to prevent diabetic complications.
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Affiliation(s)
- Veysel Comakli
- Nutrition and Dietetics Department, High School of Health, Agri Ibrahim Cecen University, Agri, Turkey
| | - Sevki Adem
- Department of Chemistry, Faculty of Science, Cankiri Karatekin University, Cankiri, Turkey
| | - Aykut Oztekin
- Medical Services and Techniques Department, Vocational School of Health Services, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ramazan Demirdag
- Nutrition and Dietetics Department, High School of Health, Agri Ibrahim Cecen University, Agri, Turkey
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Tas M, Senturk E, Ekinci D, Demirdag R, Comakli V, Bayram M, Akyuz M, Senturk M, Supuran CT. Comparison of blood carbonic anhydrase activity of athletes performing interval and continuous running exercise at high altitude. J Enzyme Inhib Med Chem 2019; 34:218-224. [PMID: 30560698 PMCID: PMC6292344 DOI: 10.1080/14756366.2018.1545768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 11/12/2022] Open
Abstract
The effects of high-intensity interval and continuous exercise on erythrocytes carbonic anhydrase (CA, EC 4.2.1.1) activity levels were scarcely investigated up until now. Here we present a study focused on the CA activity from erythrocytes of athletes experiencing interval and continuous training for 6 weeks, during cold weather and at high altitude (> 1600 m). We observed a 50% increase in the blood CA activity at the second week after initiation of the training in both interval and continuos running groups, whereas the control group did not experience any variation in the enzyme activity levels. In the trained individuals a mild decrease in their body mass, BMI and an increased [Formula: see text] were also observed. The CA activity returned at the basal values after 4-6 weeks after the training started, probably proving that a metabolic compensation occurred without the need of an enhanced enzyme activity. The unexpected 50% rise of activity for an enzyme which acts as a very efficient catalyst for CO2 hydration/bicarbonate dehydration, such as the blood CA, deserves further investigations for better understanding the physiologic basis of this phenomenon.
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Affiliation(s)
- Murat Tas
- Faculty of Sport Sciences, Manisa Celal Bayar University, Manisa, Turkey
| | - Esra Senturk
- School of Health Services, Agri Ibrahim Cecen University, Agri, Turkey
| | - Deniz Ekinci
- Faculty of Agriculture, Ondokuz Mayıs University, Samsun, Turkey
| | - Ramazan Demirdag
- School of Health Services, Agri Ibrahim Cecen University, Agri, Turkey
| | - Veysal Comakli
- School of Health Services, Agri Ibrahim Cecen University, Agri, Turkey
| | - Metin Bayram
- Physical Education Sports High School, Agri Ibrahim Cecen University, Agri, Turkey
| | - Murat Akyuz
- Faculty of Sport Sciences, Manisa Celal Bayar University, Manisa, Turkey
| | - Murat Senturk
- Faculty of Pharmacy, Agri Ibrahim Cecen University, Agri, Turkey
| | - Claudiu T. Supuran
- Section of Pharmaceutical Chemistry, Neurofarba Department, University of Florence, Firenze, Italy
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Sahin Z, Ozkaya A, Uckun M, Yologlu E, Kuzu M, Comakli V, Demirdag R, Tel AZ, Aymelek F, Yologlu S. Evaluation of the effects of Cyclotrichium niveum on brain acetylcholinesterase activity and oxidative stress in male rats orally exposed to lead acetate. Cell Mol Biol (Noisy-le-grand) 2019; 65:3-8. [PMID: 31304900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/09/2019] [Accepted: 03/13/2019] [Indexed: 06/10/2023]
Abstract
Cyclotrichium niveum is an endemic plant for Turkey and it appears to have in vitro antioxidant and acetylcholinesterase inhibition properties. To the best of our knowledge, there has been no study on the in vivo effects of this plant. Therefore, the purpose of this study was to evaluate the effects of C. niveum on lead (Pb)-acetate-induced potential alterations in brain acetylcholinesterase activity, as well as oxidative stress in male rats. The rats were randomly assigned to control, Pb-acetate, C. niveum and Pb-acetate+ C. niveum groups. Pb-acetate was provided in drinking water (500 ppm), and C. niveum was administered via orogastric gavage (4 ml/kg) for 30 days. The acetylcholinesterase activity in the brain significantly decreased only in the Pb-acetate group. The malondialdehyde level significantly increased, and the reduced glutathione activity decreased in the Pb-acetate group. The reduced glutathione and glutathione-S-transferase activities of the C. niveum group were higher than the control group. No Pb was detected on a ppb level in the brain tissue of the control and C. niveum groups, while it was detected in the brains of the rats in the Pb-acetate and Pb-acetate+ C. niveum groups (185+8.98 ppb and 206+56.65 ppb, respectively). The data collected in this study suggested that C. niveum may reduce inhibition of brain AChE activity and oxidative stress against Pb-acetate-induced alterations in the brain of male rats.
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Affiliation(s)
- Zafer Sahin
- Department of Physiology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Ahmet Ozkaya
- Department of Chemistry, Faculty of Science and Art, Adiyaman University, Adiyaman, Turkey
| | - Mirac Uckun
- Department of Food Engineering, Faculty of Engineering, Adiyaman University, Adiyaman, Turkey
| | - Ertan Yologlu
- Department of Science Education, Faculty of Education, Adiyaman University, Adiyaman, Turkey
| | - Muslum Kuzu
- Faculty of Pharmacy, Agri Ibrahim Cecen University, Agri, Turkey
| | - Veysel Comakli
- School of Health, Agri Ibrahim Cecen University, Agri, Turkey
| | | | - Ahmet Zafer Tel
- Department of Biology, Faculty of Science and Art, Adiyaman University, Adiyaman, Turkey
| | - Fatih Aymelek
- Central Research Laboratory, Adiyaman University, Adiyaman, Turkey
| | - Semra Yologlu
- Department of Chemistry, Faculty of Science and Art, Adiyaman University, Adiyaman, Turkey
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Sahin Z, Ozkaya A, Uckun M, Yologlu E, Kuzu M, Comakli V, Demirdag R, Tel AZ, Aymelek F, Yologlu S. Evaluation of the effects of Cyclotrichium niveum on brain acetylcholinesterase activity and oxidative stress in male rats orally exposed to lead acetate. Cell Mol Biol (Noisy-le-grand) 2019. [DOI: 10.14715/cmb/2019.65.5.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ozkaya A, Sahin Z, Kuzu M, Saglam YS, Ozkaraca M, Uckun M, Yologlu E, Comakli V, Demirdag R, Yologlu S. Role of geraniol against lead acetate-mediated hepatic damage and their interaction with liver carboxylesterase activity in rats. Arch Physiol Biochem 2018; 124:80-87. [PMID: 28817314 DOI: 10.1080/13813455.2017.1364772] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this study, the effect of geraniol (50 mg/kg for 30 d), a natural antioxidant and repellent/antifeedant monoterpene, in a rat model of lead acetate-induced (500 ppm for 30 d) liver damage was evaluated. Hepatic malondialdehyde increased in the lead acetate group. Reduced glutathione unchanged, but glutathione S-transferase, glutathione reductase, as well as carboxylesterase activities decreased in geraniol, lead acetate and geraniol + lead acetate groups. 8-OhDG immunoreactivity, mononuclear cell infiltrations and hepatic lead concentration were lower in the geraniol + lead acetate group than the lead acetate group. Serum aspartate aminotransferase and alanine aminotransferase activities increased in the Pb acetate group. In conclusion, lead acetate causes oxidative and toxic damage in the liver and this effect can reduce with geraniol treatment. However, we first observed that lead acetate, as well as geraniol, can affect liver carboxylesterase activity.
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Affiliation(s)
- Ahmet Ozkaya
- a Department of Chemistry, Faculty of Science and Art , Adiyaman University , Adiyaman , Turkey
| | - Zafer Sahin
- b Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences , Necmettin Erbakan University , Konya , Turkey
| | - Muslum Kuzu
- c Faculty of Pharmacy , Agri Ibrahim Cecen University , Agri , Turkey
| | - Yavuz Selim Saglam
- d Department of Pathology, Faculty of Veterinary Medicine , Ataturk University , Erzurum , Turkey
| | - Mustafa Ozkaraca
- d Department of Pathology, Faculty of Veterinary Medicine , Ataturk University , Erzurum , Turkey
| | - Mirac Uckun
- e Department of Food Engineering, Faculty of Engineering , Adiyaman University , Adiyaman , Turkey
| | - Ertan Yologlu
- f Department of Science Education, Faculty of Education , Adiyaman University , Adiyaman , Turkey
| | - Veysel Comakli
- g School of Health , Agri Ibrahim Cecen University , Agri , Turkey
| | - Ramazan Demirdag
- g School of Health , Agri Ibrahim Cecen University , Agri , Turkey
| | - Semra Yologlu
- a Department of Chemistry, Faculty of Science and Art , Adiyaman University , Adiyaman , Turkey
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Tchuente Tchuenmogne MA, Kammalac TN, Gohlke S, Kouipou RMT, Aslan A, Kuzu M, Comakli V, Demirdag R, Ngouela SA, Tsamo E, Sewald N, Lenta BN, Boyom FF. Compounds from Terminalia mantaly L. (Combretaceae) Stem Bark Exhibit Potent Inhibition against Some Pathogenic Yeasts and Enzymes of Metabolic Significance. Medicines (Basel) 2017; 4:E6. [PMID: 28930221 PMCID: PMC5597071 DOI: 10.3390/medicines4010006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/23/2016] [Accepted: 01/12/2017] [Indexed: 12/30/2022]
Abstract
Background: Pathogenic yeasts resistance to current drugs emphasizes the need for new, safe, and cost-effective drugs. Also, new inhibitors are needed to control the effects of enzymes that are implicated in metabolic dysfunctions such as cancer, obesity, and epilepsy. Methods: The anti-yeast extract from Terminalia mantaly (Combretaceae) was fractionated and the structures of the isolated compounds established by means of spectroscopic analysis and comparison with literature data. Activity was assessed against Candida albicans, C. parapsilosis and C. krusei using the microdilution method, and against four enzymes of metabolic significance: glucose-6-phosphate dehydrogenase, human erythrocyte carbonic anhydrase I and II, and glutathione S-transferase. Results: Seven compounds, 3,3'-di-O-methylellagic acid 4'-O-α-rhamnopyranoside; 3-O-methylellagic acid; arjungenin or 2,3,19,23-tetrahydroxyolean-12-en-28-oïc acid; arjunglucoside or 2,3,19,23-tetrahydroxyolean-12-en-28-oïc acid glucopyranoside; 2α,3α,24-trihydroxyolean-11,13(18)-dien-28-oïc acid; stigmasterol; and stigmasterol 3-O-β-d-glucopyranoside were isolated from the extract. Among those, 3,3'-di-O-methylellagic acid 4'-O-α-rhamnopyranoside, 3-O-methylellagic acid, and arjunglucoside showed anti-yeast activity comparable to that of reference fluconazole with minimal inhibitory concentrations (MIC) below 32 µg/mL. Besides, Arjunglucoside potently inhibited the tested enzymes with 50% inhibitory concentrations (IC50) below 4 µM and inhibitory constant (Ki) <3 µM. Conclusions: The results achieved indicate that further SAR studies will likely identify potent hit derivatives that should subsequently enter the drug development pipeline.
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Affiliation(s)
- Marthe Aimée Tchuente Tchuenmogne
- Laboratory of Natural Products and Organic Synthesis, Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon.
| | - Thierry Ngouana Kammalac
- Antimicrobial & Biocontrol Agents Unit, Laboratory for Phytobiochemistry and Medicinal Plants Studies, Department of Biochemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Sebastian Gohlke
- Chemistry Department, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, D-33501 Bielefeld, Germany.
| | - Rufin Marie Toghueo Kouipou
- Antimicrobial & Biocontrol Agents Unit, Laboratory for Phytobiochemistry and Medicinal Plants Studies, Department of Biochemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Abdulselam Aslan
- Faculty of Engineering, Department of Industrial Engineering, Giresun University, 28200 Giresun, Turkey.
| | - Muslum Kuzu
- Faculty of Pharmacy, Department of Basic Pharmaceutical Sciences, Agrı Ibrahim Cecen University, 04100 Agri, Turkey.
| | - Veysel Comakli
- School of Health, Department of Nutrition and Dietetics, Agrı Ibrahim Cecen University, 04100 Agri, Turkey.
| | - Ramazan Demirdag
- School of Health, Department of Nutrition and Dietetics, Agrı Ibrahim Cecen University, 04100 Agri, Turkey.
| | - Silvère Augustin Ngouela
- Laboratory of Natural Products and Organic Synthesis, Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon.
| | - Etienne Tsamo
- Laboratory of Natural Products and Organic Synthesis, Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon.
| | - Norbert Sewald
- Chemistry Department, Organic and Bioorganic Chemistry, Bielefeld University, P.O. Box 100131, D-33501 Bielefeld, Germany.
| | - Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé 1, Yaoundé, Cameroon.
| | - Fabrice Fekam Boyom
- Antimicrobial & Biocontrol Agents Unit, Laboratory for Phytobiochemistry and Medicinal Plants Studies, Department of Biochemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
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Kuzu M, Aslan A, Ahmed I, Comakli V, Demirdag R, Uzun N. Erratum to: Purification of glucose-6-phosphate dehydrogenase and glutathione reductase enzymes from the gill tissue of Lake Van fish and analyzing the effects of some chalcone derivatives on enzyme activities. Fish Physiol Biochem 2016; 42:493. [PMID: 26940468 DOI: 10.1007/s10695-016-0209-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Muslum Kuzu
- Faculty of Pharmacy, University of Ağrı İbrahim Çeçen, 04100, Ağrı, Turkey.
| | - Abdulselam Aslan
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
- Faculty of Engineering, Giresun University, Güre Yerleşkesi, 28200, Giresun, Turkey
| | - Ishtiaq Ahmed
- Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Veysel Comakli
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
| | - Ramazan Demirdag
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
| | - Naim Uzun
- Faculty of Pharmacy, University of Ağrı İbrahim Çeçen, 04100, Ağrı, Turkey
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Kuzu M, Aslan A, Ahmed I, Comakli V, Demirdag R, Uzun N. Purification of glucose-6-phosphate dehydrogenase and glutathione reductase enzymes from the gill tissue of Lake Van fish and analyzing the effects of some chalcone derivatives on enzyme activities. Fish Physiol Biochem 2016; 42:483-491. [PMID: 26676512 DOI: 10.1007/s10695-015-0153-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 10/26/2015] [Indexed: 06/05/2023]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) and glutathione reductase (GR) are metabolically quite important enzymes. Within this study, these two enzymes were purified for the first time from the gills of Lake Van fish. In the purifying process, ammonium sulfate precipitation and 2',5'-ADP Sepharose 4B affinity column chromatography techniques for glucose-6-phosphate dehydrogenase, temperature degradation and 2',5'-ADP Sepharose 4B affinity column chromatography for glutathione reductase enzyme were used. The control of the enzyme purity and determination of molecular weight were done with sodium dodecyl sulfate polyacrylamide gel electrophoresis. K(M) and V(max) values were determined with Lineweaver-Burk plot. Besides, the effects of some chalcone derivatives on the purified enzymes were analyzed. For the ones showing inhibition effect, % activity-[I] figures were drawn and IC50 values were determined. K(i) value was calculated by using Cheng-Prusoff equation.
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Affiliation(s)
- Muslum Kuzu
- Faculty of Pharmacy, University of Ağrı İbrahim Çeçen, 04100, Ağrı, Turkey.
| | - Abdulselam Aslan
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
| | - Ishtiaq Ahmed
- Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Veysel Comakli
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
| | - Ramazan Demirdag
- Department of Nutrition and Dietetics, University of Ağrı İbrahim Çeçen, Ağrı, Turkey
| | - Naim Uzun
- Faculty of Pharmacy, University of Ağrı İbrahim Çeçen, 04100, Ağrı, Turkey
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Adem S, Aslan A, Ahmed I, Krohn K, Guler C, Comaklı V, Demirdag R, Kuzu M. Inhibitory and Activating Effects of Some Flavonoid Derivatives on Human Pyruvate Kinase Isoenzyme M2. Arch Pharm (Weinheim) 2015; 349:132-6. [DOI: 10.1002/ardp.201500357] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 12/01/2015] [Accepted: 12/04/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Sevki Adem
- Department of Chemistry, Faculty of Science; Cankiri Karatekin University; Cankiri Turkey
| | | | - Ishtiaq Ahmed
- Institute for Biological Interfaces (IBG-1); Karlsruhe Institute of Technology (KIT); Eggenstein-Leopoldshafen Germany
- Department of Organic Chemistry; University of Paderborn; Paderborn Germany
| | - Karsten Krohn
- Department of Organic Chemistry; University of Paderborn; Paderborn Germany
| | - Caglar Guler
- Department of Chemistry, Faculty of Science; Cankiri Karatekin University; Cankiri Turkey
| | - Veysel Comaklı
- Faculty of Pharmacy; Agrı Ibrahim Cecen University; Agri Turkey
| | | | - Muslum Kuzu
- Faculty of Pharmacy; Agrı Ibrahim Cecen University; Agri Turkey
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Demirdag R, Comakli V, Kuzu M, Yerlikaya E, Şentürk M. Purification and Characterization of Carbonic Anhydrase from Ağrı Balık Lake Trout Gill (Salmo trutta labrax) and Effects of Sulfonamides on Enzyme Activity. J Biochem Mol Toxicol 2014; 29:123-8. [DOI: 10.1002/jbt.21675] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/11/2014] [Accepted: 09/14/2014] [Indexed: 11/07/2022]
Affiliation(s)
| | - Veysal Comakli
- School of Health; Agri Ibrahim Cecen University; Agri Turkey
| | - Muslum Kuzu
- Faculty of Pharmacy; Agri Ibrahim Cecen University; Agri Turkey
| | | | - Murat Şentürk
- Art and Science Faculty; Agri Ibrahim Cecen University; Chemistry Department; Agri Turkey
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Demirdag R, Comakli V, Ozkaya A, Sahin Z, Dag U, Yerlikaya E, Kuzu M. Examination of Changes in Enzyme Activities of Erythrocyte Glucose 6-Phosphate Dehydrogenase and 6-Phosphogluconate Dehydrogenase in Rats Given Naringenin and Lead Acetate. J Biochem Mol Toxicol 2014; 29:43-7. [DOI: 10.1002/jbt.21606] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/01/2014] [Indexed: 11/10/2022]
Affiliation(s)
| | - Veysel Comakli
- School of Health; Agri Ibrahim Cecen University; Agri Turkey
| | - Ahmet Ozkaya
- Science and Art Faculty; Adiyaman University; Adiyaman Turkey
| | - Zafer Sahin
- School of Health; Bitlis Eren University; Bitlis Turkey
- Department of Physiology; Faculty of Medicine; Firat University; Elazig Turkey
| | - Uzeyir Dag
- Science and Art Faculty; Adiyaman University; Adiyaman Turkey
| | | | - Muslum Kuzu
- Faculty of Pharmacy, Agri Ibrahim Cecen University; Ağrı Turkey
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Adem S, Comakli V, Kuzu M, Demirdag R. Investigation of the effects of some phenolic compounds on the activities of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase from human erythrocytes. J Biochem Mol Toxicol 2014; 28:510-4. [PMID: 25130191 DOI: 10.1002/jbt.21592] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 06/18/2014] [Indexed: 01/10/2023]
Abstract
Polyphenols are the important compounds that have various bioactivities. They constitute vital active agents of not only daily diet but also natural medicines that are used traditionally. It is generally considered that they are safe because they are natural. In some conducted studies, different negative effects of these compounds were mentioned. Twelve phenolic compounds have been assayed to determine the effect of inhibition on glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGD) enzymes activity. For in vitro studies, the enzymes were purified from human erythrocytes using 2',5'-ADP Sepharose 4B affinity chromatography. Naringenin, caffeic acid, ellagic acid, ferulic acid, and sinapic acid against two enzymes, hesperidin and polydatin, only on G6PD activity and chrysin solely against 6PGD showed inhibitory effect. Chlorogenic acid, p-coumaric acid, and syringic acid did not exhibit an effect on the activity of the two enzymes.
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Affiliation(s)
- Sevki Adem
- Cankırı Karatekın Unıversıty, Faculty of Science, Chemistry Department, Cankiri, Turkey.
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Demirdag R, Yerlikaya E, Kufrevioglu OI, Gundogdu C. Purification of glutathione S-transferase isoenzymes from tumour and nontumour human stomach and inhibitory effects of some heavy metals on enzymes activities. J Enzyme Inhib Med Chem 2012; 28:911-5. [PMID: 22803665 DOI: 10.3109/14756366.2012.694878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, glutathione S-transferase (GST) enzyme was purified from nontumour and tumour human gastric tissue and in vitro effects of heavy metals on the enzyme were examined. GST was purified 3089 fold with a specific activity of 20 U/mg and a yield of 78% from gastric tumour tissue; and 1185 fold with a specific activity of 5.69 U/mg and a yield of 50% from nontumour tissue by using glutathione-agarose affinity column, respectively. Enzyme purity was verified by SDS-PAGE and subunit molecular mass was calculated around 26 kDa. The molecular weight of the enzyme was calculated as 52 kDa by using Sephadex G-75 gel filtration column. Then, inhibitory effects of metal ions on the enzymes were investigated. Mg(2+) and Cd(2+) had inhibitory effect on the enzymes activities. Other kinetic properties of the enzymes were also determined.
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Affiliation(s)
- Ramazan Demirdag
- Agrı Ibrahim Cecen University , Vocational Training School, Agrı , Turkey
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Demirdag R, Yerlikaya E, Kufrevioglu OI. Purification of carbonic anhydrase-II from sheep liver and inhibitory effects of some heavy metals on enzyme activity. J Enzyme Inhib Med Chem 2011; 27:795-9. [DOI: 10.3109/14756366.2011.615744] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ramazan Demirdag
- Ataturk University, Science Faculty, Department of Chemistry,
Erzurum, Turkey
| | - Emrah Yerlikaya
- Ataturk University, Science Faculty, Department of Chemistry,
Erzurum, Turkey
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