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Redox Regulation of Autophagy in Cancer: Mechanism, Prevention and Therapy. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010098. [PMID: 36676047 PMCID: PMC9863886 DOI: 10.3390/life13010098] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/18/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022]
Abstract
Reactive oxygen species (ROS), products of normal cellular metabolism, play an important role in signal transduction. Autophagy is an intracellular degradation process in response to various stress conditions, such as nutritional deprivation, organelle damage and accumulation of abnormal proteins. ROS and autophagy both exhibit double-edged sword roles in the occurrence and development of cancer. Studies have shown that oxidative stress, as the converging point of these stimuli, is involved in the mechanical regulation of autophagy process. The regulation of ROS on autophagy can be roughly divided into indirect and direct methods. The indirect regulation of autophagy by ROS includes post-transcriptional and transcriptional modulation. ROS-mediated post-transcriptional regulation of autophagy includes the post-translational modifications and protein interactions of AMPK, Beclin 1, PI3K and other molecules, while transcriptional regulation mainly focuses on p62/Keap1/Nrf2 pathway. Notably, ROS can directly oxidize key autophagy proteins, such as ATG4 and p62, leading to the inhibition of autophagy pathway. In this review, we will elaborate the molecular mechanisms of redox regulation of autophagy in cancer, and discuss ROS- and autophagy-based therapeutic strategies for cancer treatment.
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Leaves of Cedrela sinensis Attenuate Chronic Unpredictable Mild Stress-Induced Depression-like Behavior via Regulation of Hormonal and Inflammatory Imbalance. Antioxidants (Basel) 2022; 11:antiox11122448. [PMID: 36552656 PMCID: PMC9774296 DOI: 10.3390/antiox11122448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
This study aimed to evaluate the protective effects of ethyl acetate fraction from Cedrela sinensis (EFCS) against chronic unpredictable mild stress (CUMS)-induced behavioral dysfunction and stress response in C57BL/6 mice. The physiological compounds of EFCS were identified as rutin, isoquercitrin, ethyl gallate, quercitrin, kaempferol-3-O-rhamnoside, and ethyl digallate, using UPLC-Q-TOF/MSE. To evaluate the neuroprotective effect of EFCS, H2O2- and corticosterone-induced neuronal cell viability was conducted in human neuroblastoma MC-IXC cells. It was found that EFCS alleviated depression-like behavior by conducting the sucrose preference test (SPT), forced swimming test (FST), open field test (OFT), and tail suspension test (TST). EFCS inhibited mitochondrial dysfunction related to neuronal energy metabolism by regulating reactive oxygen species (ROS) levels, mitochondrial membrane potential (MMP), and ATP contents in brain tissue. In addition, the administration of EFCS regulated the stress hormones in serum. EFCS regulated stress-related indicators such as CRF, ACTH, CYP11B1, and BDNF. Moreover, EFCS downregulated the inflammatory responses and apoptosis proteins such as caspase-1, TNF-α, IL-1β, p-JNK, BAX, and p-tau in brain tissues. These results suggest that EFCS might be a potential natural plant material that alleviates CUMS-induced behavior disorder by regulating inflammation in brain tissue against CUMS-induced depression.
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Frantsiyants E, Neskubina I, Shikhlyarova A, Cheryarina N, Kaplieva I, Bandovkina V, Trepitaki L, Nemashkalova L, Lysenko I, Kachesova P, Sheiko E, Morozova M, Kotieva I. The effect of diabetes mellitus under tumor growth on respiratory function and free radical processes in heart cell mitochondria in rats. CARDIOMETRY 2021. [DOI: 10.18137/cardiometry.2021.18.5055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The aim is to study the effect of comorbid pathology, namely, diabetes mellitus, on free radical oxidation in the mitochondria in the heart cells in female rats with experimental Guerin carcinoma.
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Biganeh J, Ashtarinezhad A, Behzadipour D, Khanjani N, Tavakoli Nik A, Bagheri Hosseinabadi M. Investigating the relationship between job stress, workload and oxidative stress in nurses. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2021; 28:1176-1182. [PMID: 33464196 DOI: 10.1080/10803548.2021.1877456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objectives. Occupational stress and workload are common risk factors among nurses that increase absenteeism, reduce the quality and quantity of patient care, increase care costs and increase the patient safety risk. The relation between these risk factors and oxidative stress levels has not been clearly defined. Methods. This study was conducted with 258 participants (126 nurses as the case group and 132 healthy adults as the control group). Information was collected using a demographic questionnaire, the nurses' occupational stress scale and the NASA task load index workload questionnaire. Blood samples were taken from the participants and then the levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase and total antioxidant capacity (TAC) were measured in the serum samples. Independent t tests and one-way analysis of variance were used for statistical analysis. Results. SOD and TAC were significantly higher and MDA was significantly lower among the case group compared to the control group. TAC levels significantly decreased with increased stress. MDA levels showed negative associations with stress and workload. Nurses experience high levels of occupational stress and workload. Conclusion. Biomarkers such as SOD, TAC and MDA are the most important predictors of work stress and overwork in this study.
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Affiliation(s)
- Jamal Biganeh
- School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Azadeh Ashtarinezhad
- Air Pollution Research Centre, Department of Occupational Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Davood Behzadipour
- Department of Occupational Health Engineering, School of Public Health, Tarbiat Modares University, Tehran, Iran
| | - Narges Khanjani
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Atefeh Tavakoli Nik
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran
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Genome-Wide Functional Screen for Calcium Transients in Escherichia coli Identifies Increased Membrane Potential Adaptation to Persistent DNA Damage. J Bacteriol 2021; 203:JB.00509-20. [PMID: 33199283 DOI: 10.1128/jb.00509-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 11/07/2020] [Indexed: 12/12/2022] Open
Abstract
Calcium plays numerous critical roles in signaling and homeostasis in eukaryotic cells. Far less is known about calcium signaling in bacteria than in eukaryotic cells, and few genes controlling influx and efflux have been identified. Previous work in Escherichia coli showed that calcium influx was induced by voltage depolarization, which was enhanced by mechanical stimulation, which suggested a role in bacterial mechanosensation. To identify proteins and pathways affecting calcium handling in bacteria, we designed a live-cell screen to monitor calcium dynamics in single cells across a genome-wide knockout panel in E. coli The screen measured cells from the Keio collection of knockouts and quantified calcium transients across the population. Overall, we found 143 gene knockouts that decreased levels of calcium transients and 32 gene knockouts that increased levels of transients. Knockouts of proteins involved in energy production and regulation appeared, as expected, as well as knockouts of proteins of a voltage sink, F1Fo-ATPase. Knockouts of exopolysaccharide and outer membrane synthesis proteins showed reduced transients which refined our model of electrophysiology-mediated mechanosensation. Additionally, knockouts of proteins associated with DNA repair had reduced calcium transients and voltage. However, acute DNA damage did not affect voltage, and the results suggested that only long-term adaptation to DNA damage decreased membrane potential and calcium transients. Our work showed a distinct separation between the acute and long-term DNA damage responses in bacteria, which also has implications for mitochondrial DNA damage in eukaryotes.IMPORTANCE All eukaryotic cells use calcium as a critical signaling molecule. There is tantalizing evidence that bacteria also use calcium for cellular signaling, but much less is known about the molecular actors and physiological roles. To identify genes regulating cytoplasmic calcium in Escherichia coli, we created a single-cell screen for modulators of calcium dynamics. The genes uncovered in this screen helped refine a model for voltage-mediated bacterial mechanosensation. Additionally, we were able to more carefully dissect the mechanisms of adaptation to long-term DNA damage, which has implications for both bacteria and mitochondria in the face of unrepaired DNA.
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Curcumin, oxidative stress, and breast cancer. Cancer 2021. [DOI: 10.1016/b978-0-12-819547-5.00032-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Gao L, Liu Y, Wang Y, Chen W, Yang K, Li J, Lv B, Zhang X, Chi J, Liu N, Yin X, Zhang X. H2 relaxin ameliorates angiotensin II-induced endothelial dysfunction through inhibition of excessive mitochondrial fission. Biochem Biophys Res Commun 2019; 512:799-805. [PMID: 30928096 DOI: 10.1016/j.bbrc.2019.03.112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/18/2019] [Indexed: 11/16/2022]
Abstract
The physiological function of endothelial cells plays an important role in maintaining normal cardiovascular function. Endothelial dysfunction induced by AngII (angiotensin II) is the pathological mechanism of occurrence and development of cardiovascular diseases. Human recombinant relaxin-2 (H2 relaxin), which has protective effect on cardiovascular functions, ameliorates damage to endothelial cells induced by angiotensin II (AngII) treatment. However, the exact mechanisms remain unclear. In this study, we researched the mechanisms of H2 relaxin inhibiting AngII-induced endothelial dysfunction from the protective effect of H2 relaxin on endothelial function though inhibiting excessive mitochondrial fission. Here, we found that H2 relaxin increased eNOS, SOD1 expression, inhibited excessive mitochondrial fission and decreased ROS level in HUVECs treated with AngII. However, overexpression of fission protein 1 (Fis1) prevented H2 relaxin from protecting against AngII-induced low eNOS, SOD1 expression, excessive mitochondrial fission and increased ROS level in HUVECs. Our study indicated that excessive mitochondrial fission could be a target for H2 relaxin to treat endothelial dysfunction in angiocardiopathy.
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Affiliation(s)
- Lei Gao
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Yue Liu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Ying Wang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Wenjia Chen
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Kelaier Yang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Jiawen Li
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Bo Lv
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Xin Zhang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Jinyu Chi
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Na Liu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China
| | - Xinhua Yin
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China.
| | - Xiaohui Zhang
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang Province, China.
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Ferreira G, Costa C, Bassaizteguy V, Santos M, Cardozo R, Montes J, Settineri R, Nicolson GL. Incubation of human sperm with micelles made from glycerophospholipid mixtures increases sperm motility and resistance to oxidative stress. PLoS One 2018; 13:e0197897. [PMID: 29856778 PMCID: PMC5984032 DOI: 10.1371/journal.pone.0197897] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/10/2018] [Indexed: 12/31/2022] Open
Abstract
Membrane integrity is essential in maintaining sperm viability, signaling, and motility, which are essential for fertilization. Sperm are highly susceptible to oxidative stress, as they are rich in sensitive polyunsaturated fatty acids (PUFA), and are unable to synthesize and repair many essential membrane constituents. Because of this, sperm cellular membranes are important targets of this process. Membrane Lipid Replacement (MLR) with glycerophospholipid mixtures (GPL) has been shown to ameliorate oxidative stress in cells, restore their cellular membranes, and prevent loss of function. Therefore, we tested the effects of MLR on sperm by tracking and monitoring GPL incorporation into their membrane systems and studying their effects on sperm motility and viability under different experimental conditions. Incubation of sperm with mixtures of exogenous, unoxidized GPL results in their incorporation into sperm membranes, as shown by the use of fluorescent dyes attached to GPL. The percent overall (total) sperm motility was increased from 52±2.5% to 68±1.34% after adding GPL to the incubation media, and overall sperm motility was recovered from 7±2% after H2O2 treatment to 58±2.5%)(n = 8, p<0.01) by the incorporation of GPL into sperm membranes. When sperm were exposed to H2O2, the mitochondrial inner membrane potential (MIMP), monitored using the MIMP tracker dye JC-1 in flow cytometry, diminished, whereas the addition of GPL prevented the decrease in MIMP. Confocal microscopy with Rhodamine-123 and JC-1 confirmed the mitochondrial localization of the dyes. We conclude that incubation of human sperm with glycerolphospholipids into the membranes of sperm improves sperm viability, motility, and resistance to oxidizing agents like H2O2. This suggests that human sperm might be useful to test innovative new treatments like MLR, since such treatments could improve fertility when it is adversely affected by increased oxidative stress.
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Affiliation(s)
- Gonzalo Ferreira
- Departamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Carlos Costa
- Departamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Verónica Bassaizteguy
- Departamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Marcelo Santos
- Departamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Romina Cardozo
- Departamento de Biofísica, Laboratorio de Canales Iónicos y Señalización Celular, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | | | - Robert Settineri
- Sierra Productions Research, LLC, Irvine, California, United States of America
| | - Garth L. Nicolson
- Dept. of Molecular Pathology, The Institute for Molecular Medicine, Huntington Beach, California, United States of America
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Calaf GM, Urzua U, Termini L, Aguayo F. Oxidative stress in female cancers. Oncotarget 2018; 9:23824-23842. [PMID: 29805775 PMCID: PMC5955122 DOI: 10.18632/oncotarget.25323] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 04/06/2018] [Indexed: 12/16/2022] Open
Abstract
Breast, cervical and ovarian cancers are highly prevalent in women worldwide. Environmental, hormonal and viral-related factors are especially relevant in the development of these tumors. These factors are strongly related to oxidative stress (OS) through the generation of reactive oxygen species (ROS). The OS is caused by an imbalance in the redox status of the organism and is literally defined as "an imbalance between ROS generation and its detoxification by biological system leading to impairment of damage repair by cell/tissue". The multistep progression of cancer suggests that OS is involved in cancer initiation, promotion and progression. In this review, we described the role of OS and the interplay with environmental, host and viral factors related to breast, cervical and ovarian cancers initiation, promotion and progression. In addition, the role of the natural antioxidant compound curcumin and other compounds for breast, cervical and ovarian cancers prevention/treatment is discussed.
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Affiliation(s)
- Gloria M. Calaf
- Instituto de Alta Investigación (IAI), Universidad de Tarapacá, Arica, Chile
- Center for Radiological Research, Columbia University Medical Center, New York, NY, USA
| | - Ulises Urzua
- Departamento de Oncología Básico Clínica, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Lara Termini
- Instituto do Câncer do Estado de São Paulo, Centro de Investigação Translacional em Oncologia, Laboratório de Oncologia Experimental, São Paulo, SP, Brazil
| | - Francisco Aguayo
- Departamento de Oncología Básico Clínica, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Santiago, Chile
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Alak G, Ucar A, Parlak V, Yeltekin AÇ, Taş IH, Ölmez D, Kocaman EM, Yılgın M, Atamanalp M, Yanık T. Assessment of 8-hydroxy-2-deoxyguanosine activity, gene expression and antioxidant enzyme activity on rainbow trout (Oncorhynchus mykiss) tissues exposed to biopesticide. Comp Biochem Physiol C Toxicol Pharmacol 2017; 203:51-58. [PMID: 29111472 DOI: 10.1016/j.cbpc.2017.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 01/15/2023]
Abstract
The goal of this study was to determinate toxicity mechanism of biopesticide with antioxidant enzymes parameters such as superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase (CAT) and malondialdehyde (MDA) levels, oxidative DNA damage (8-hydroxy-2-deoxyguanosine (8-OHdG)), transcriptional changes of heat shock protein 70 (HSP70), and cytochromes P4501A (CYP1A), sod, cat, and gpx in liver and gill tissues of Oncorhynchus mykiss. For this aim, plant-based (natural pesticides, azadirachtin (AZA)) and synthetic pesticides (deltamethrin (DLM)) were exposed on the fish at different concentrations (0.0005 and 0.00025ppm of DLM; 0.24 and 0.12ppm of AZA) for 21 days. According to the results of the study, the activity of SOD, CAT and GPx decreased, but malondialdehyde (MDA) level and activity of 8-OHdG increased in the gill and liver of rainbow trout (p<0.05). Additionally sod, cat and gpx were down regulated; HSP70 and CYP1A were up regulated for transcriptional observation. The downwards regulation of antioxidant (sod, cat and gpx) and the upregulation of HSP70 and CYP1A was obvious with doses of AZA or DLM (p<0.05). The findings of this study suggest that biopesticide can cause biochemical and physiological effects in the fish gill and liver by causing enzyme inhibition, an increase in 8-OHdG levels and changes in both transcriptional parameters (sod, cat, gpx, HSP70 and CYP1A). We found that excessive doses of plant-based pesticide are nearly as toxic as chemical ones for aquatic organisms. Moreover, 8-OHdG, HSP70 and CYP1A used as a biomarker to determinate toxicity mechanism of biopesticide in aquatic environment.
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Affiliation(s)
- Gonca Alak
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey.
| | - Arzu Ucar
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Veysel Parlak
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey.
| | - Aslı Çilingir Yeltekin
- Department of Chemistry, Faculty of Science, University of Yuzuncu Yıl, TR-65080 Van, Turkey
| | | | - Doğukan Ölmez
- Graduate School of Natural and Applied Sciences, TR-25030 Erzurum, Turkey
| | - Esat Mahmut Kocaman
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Mustafa Yılgın
- Graduate School of Natural and Applied Sciences, TR-07070 Antalya, Turkey
| | - Muhammed Atamanalp
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Telat Yanık
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
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Topal A, Alak G, Ozkaraca M, Yeltekin AC, Comaklı S, Acıl G, Kokturk M, Atamanalp M. Neurotoxic responses in brain tissues of rainbow trout exposed to imidacloprid pesticide: Assessment of 8-hydroxy-2-deoxyguanosine activity, oxidative stress and acetylcholinesterase activity. CHEMOSPHERE 2017; 175:186-191. [PMID: 28219821 DOI: 10.1016/j.chemosphere.2017.02.047] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 06/06/2023]
Abstract
The extensive use of imidacloprid, a neonicotinoid insecticide, causes undesirable toxicity in non-targeted organisms including fish in aquatic environments. We investigated neurotoxic responses by observing 8-hydroxy-2-deoxyguanosine (8-OHdG) activity, oxidative stress and acetylcholinesterase (AChE) activity in rainbow trout brain tissue after 21 days of imidacloprid exposure at levels of (5 mg/L, 10 mg/L, 20 mg/L). The obtained results indicated that 8-OHdG activity did not change in fish exposed to 5 mg/L of imidacloprid, but 10 mg/L and 20 mg/L of imidacloprid significantly increased 8-OHdG activity compared to the control (p < 0.05). An immunopositiv reaction to 8-OHdG was detected in brain tissues. The brain tissues indicated a significant increase in antioxidant enzyme activities (superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx)) compared to the control and there was a significant increase in malondialdehyde (MDA) levels (p < 0.05). High concentrations of imidacloprid caused a significant decrease in AChE enzyme activity (p < 0.05). These results suggested that imidacloprid can be neurotoxic to fish by promoting AChE inhibition, an increase in 8-OHdG activity and changes in oxidative stress parameters. Therefore, these data may reflect one of the molecular pathways that play a role in imidacloprid toxicity.
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Affiliation(s)
- Ahmet Topal
- Department of Basic Sciences, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey.
| | - Gonca Alak
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Mustafa Ozkaraca
- Department of Pathology, Faculty of Veterinary, Ataturk University, TR-25030 Erzurum, Turkey
| | - Aslı Cilingir Yeltekin
- Department of Chemistry, Faculty of Science, Yuzuncu Yıl University, TR-65080 Van, Turkey
| | - Selim Comaklı
- Department of Pathology, Faculty of Veterinary, Ataturk University, TR-25030 Erzurum, Turkey
| | - Gurdal Acıl
- Department of Basic Sciences, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Mine Kokturk
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
| | - Muhammed Atamanalp
- Department of Aquaculture, Faculty of Fisheries, Ataturk University, TR-25030 Erzurum, Turkey
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Okudan N, Belviranli M. Effects of exercise training on hepatic oxidative stress and antioxidant status in aged rats. Arch Physiol Biochem 2016; 122:180-185. [PMID: 27424521 DOI: 10.1080/13813455.2016.1199574] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This study investigated the effects of exercise training on oxidative stress, and antioxidant defense markers in the liver tissues of young and aged rats. Two age groups of 4-(young) and 20-months-(aged) old male Wistar rats were performed exercise training program consisted of swimming exercise for 8 weeks. The biomarkers of pro/antioxidant status malondialdehyde (MDA), protein carbonyl (PC), 8-hydroxy-2'-deoxyguanosine (8-OHdG), total glutathione (GSH) and superoxide dismutase (SOD) were assessed by commercially available kits. PC levels were higher in the untrained aged rats compared to the young groups and exercise training decreased PC levels (p < 0.05). 8-OHdG levels were higher in the aged groups (p < 0.05). MDA and GSH levels and SOD activity did not differ significantly between the groups (p > 0.05). The present findings indicate that exercise training prevents aging-induced hepatic oxidative damage especially in the proteins.
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Affiliation(s)
- Nilsel Okudan
- a School of Medicine, Department of Physiology, Division of Sports Physiology, Selçuk University , Konya , Turkey
| | - Muaz Belviranli
- a School of Medicine, Department of Physiology, Division of Sports Physiology, Selçuk University , Konya , Turkey
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Al-Saleh I, Elkhatib R, Al-Rouqi R, Abduljabbar M, Eltabache C, Al-Rajudi T, Nester M. Alterations in biochemical markers due to mercury (Hg) exposure and its influence on infant's neurodevelopment. Int J Hyg Environ Health 2016; 219:898-914. [PMID: 27453562 DOI: 10.1016/j.ijheh.2016.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/26/2016] [Accepted: 07/01/2016] [Indexed: 01/04/2023]
Abstract
This study examined the role of oxidative stress due to mercury (Hg) exposure on infant's neurodevelopmental performance. A total of 944 healthy Saudi mothers and their respective infants (aged 3-12 months) were recruited from 57 Primary Health Care Centers in Riyadh City. Total mercury (Hg) was measured in mothers and infants urine and hair samples, as well as mother's blood and breast milk. Methylmercury (MeHg) was determined in the mothers and infants' hair and mother's blood. Urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), malondialdehyde (MDA), and porphyrins were used to assess oxidative stress. The infant's neurodevelopment was evaluated using Denver Developmental Screening Test II (DDST-II) and Parents' Evaluation of Developmental Status. The median total Hg levels in mother's urine, infant's urine, mother's hair, infant's hair, and mother's blood and breast milk were 0.995μg/l, 0.716μg/l, 0.118μg/g dw, 0.101μg/g dw, 0.635μg/l, and 0.884μg/l respectively. The median MeHg levels in mother's hair, infant's hair, and mother's blood were 0.132μg/g dw, 0.091μg/g dw, and 2.341μg/l respectively. A significant interrelationship between mothers and infants Hg measures in various matrices was noted. This suggests that mother's exposure to different forms of Hg (total and/or MeHg) from various sources contributed significantly to the metal body burden of their respective infants. Even though Hg exposure was low, it induced high oxidative stress in mothers and infants. The influence of multiplicative interaction terms between Hg measures and oxidative stress biomarkers was tested using multiple regression analysis. Significant interactions between the urinary Hg levels in mothers and infants and oxidative stress biomarkers (8-OHdG and MDA) were noted. The MeHg levels in mother-infant hair revealed similar interaction patterns. The p-values for both were below 0.001. These observations suggest that the exposure of our infants to Hg via mothers either during pregnancy and/or neonatal life, promoted oxidative stress that might have played a role in infant neurodevelopmental delays that we reported previously. The results confirmed that the interaction between infant's MeHg in hair and 8-OHdG and MDA levels was significantly associated with a delay in DDST-II performance (ß=-0.188, p=0.028). This finding provides an insight into the potential consequences of Hg-induced oxidative stress to infant's cognitive neurodevelopment for the first time. This observation still needs future studies to be validated. Given the low MeHg levels in our population, these findings are of particular importance.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
| | - Rola Elkhatib
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Reem Al-Rouqi
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Mai Abduljabbar
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Chafica Eltabache
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajudi
- Environmental Health Program, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Michael Nester
- Department of Neurosciences, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
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Baek MK, Kim KO, Kwon HJ, Kim YW, Woo JH, Kim DY. Age-Related Changes in Antioxidative Enzyme Capacity in Tongue of Fischer 344 Rats. Clin Exp Otorhinolaryngol 2016; 9:352-357. [PMID: 27334515 PMCID: PMC5115150 DOI: 10.21053/ceo.2015.01648] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 11/30/2015] [Accepted: 12/29/2015] [Indexed: 01/12/2023] Open
Abstract
Objectives Antioxidative enzyme efficiency changes in some organs with age. However, no study has been conducted on age-related antioxidant enzyme changes in tongue. In the present study, the authors investigated the activities of four antioxidative enzymes and their protein expressions in the tongues of young and old Fischer 344 rats. Methods Age-dependent changes in the enzyme activities of total superoxide dismutase (SOD), Mn-SOD, Cu/Zn-SOD, catalase (CAT), and glutathione peroxidase (GPx) were determined using chemical kits, and the protein expressions levels of these enzymes by Western blotting. The study was conducted using rats aged 7 months (the young group, n=8) and 22 months (the old group, n=8). Results Total SOD, Cu/Zn-SOD, and GPx activities in the tongues of old rats were lower than in young rats, and similarly, corresponding protein expressions were downregulated in old rats. On the other hand, although the protein expressions of Mn-SOD and CAT were lower in old rats, their enzyme activities were not. Conclusion The results of this study provide a possible mechanism for the tongue aging process, as in old Fischer 344 rats the antioxidant defense system was diminished with respect to enzyme activity levels and protein abundances.
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Affiliation(s)
- Min-Kwan Baek
- Department of Otolaryngology-Head and Neck Surgery, Gachon University Gil Hospital, Incheon, Korea
| | - Kyung-Ok Kim
- Medical Research Institute, Gachon University Gil Hospital, Incheon, Korea
| | - Hyun-Jin Kwon
- Medical Research Institute, Gachon University Gil Hospital, Incheon, Korea
| | - Yong-Woo Kim
- Department of Otolaryngology-Head and Neck Surgery, Gachon University Gil Hospital, Incheon, Korea
| | - Joo-Hyun Woo
- Department of Otolaryngology-Head and Neck Surgery, Gachon University Gil Hospital, Incheon, Korea
| | - Dong-Young Kim
- Department of Otolaryngology-Head and Neck Surgery, Gachon University Gil Hospital, Incheon, Korea
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Bjørge M, Hildrestrand G, Scheffler K, Suganthan R, Rolseth V, Kuśnierczyk A, Rowe A, Vågbø C, Vetlesen S, Eide L, Slupphaug G, Nakabeppu Y, Bredy T, Klungland A, Bjørås M. Synergistic Actions of Ogg1 and Mutyh DNA Glycosylases Modulate Anxiety-like Behavior in Mice. Cell Rep 2015; 13:2671-8. [DOI: 10.1016/j.celrep.2015.12.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 10/23/2015] [Accepted: 11/19/2015] [Indexed: 12/21/2022] Open
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Kang N, Cao SJ, Zhou Y, He H, Tashiro SI, Onodera S, Qiu F, Ikejima T. Inhibition of caspase-9 by oridonin, a diterpenoid isolated from Rabdosia rubescens, augments apoptosis in human laryngeal cancer cells. Int J Oncol 2015; 47:2045-56. [PMID: 26648189 PMCID: PMC4665153 DOI: 10.3892/ijo.2015.3186] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 09/11/2015] [Indexed: 12/26/2022] Open
Abstract
Rabdosia rubescens, a commonly used traditional Chinese medicine, has increasingly gained attention for its use as an antitumor herb. Oridonin, a bioactive diterpenoid isolated from Rabdosia rubescens, has been reported to induce apoptosis in human laryngeal cancer HEp-2 cells by our group. Here, we made unexpected observations that the caspase-9 inhibitor (C9i) enhanced apoptosis in response to selected stimuli, and HEp-2 cells which were made deficient in caspase-9 using siRNA exhibited no resistance to apoptotic signals and actually demonstrated increased apoptotic sensitivity to oridonin. The results were reversed by the transfection of an exogenous caspase-9 expression vector. Caspase-9 reduced sensitivity to apoptotic stimuli through reactive oxygen species (ROS)-suppressing and autophagy-promoting methods. ROS triggered the progression of apoptosis through activation of both the caspase-9-independent mitochondrial pathway and death receptor pathways, and the autophagy had an anti-apoptotic function in oridonin-treated HEp-2 cells. These collective results suggest that oridonin targets caspase-9 to alter ROS production and autophagy situation to promote HEp-2 cell apoptosis. Therefore, oridonin has the potential to be developed as an anticancer agent, and the combination of oridonin with those agents leading to reduction of caspase-9 expression in tumor cells could represent a novel approach to human laryngeal cancer treatment.
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Affiliation(s)
- Ning Kang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Shi-Jie Cao
- Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
| | - Yan Zhou
- Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
| | - Hao He
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
| | - Shin-Ichi Tashiro
- Institute for Clinical and Biomedical Sciences, Kyoto 603-8072, Japan
| | - Satoshi Onodera
- Department of Clinical and Biomedical Science, Showa Pharmaceutical University, Tokyo 194-8543, Japan
| | - Feng Qiu
- College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - Takashi Ikejima
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang 110016, P.R. China
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Łukasiewicz M, Puppel K, Kuczyńska B, Kamaszewski M, Niemiec J. β-Alanine as a factor influencing the content of bioactive dipeptides in muscles of Hubbard Flex chickens. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:2562-2565. [PMID: 25348487 DOI: 10.1002/jsfa.6970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 10/20/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND The aim of this study was to determine the effect of various doses of β-alanine administered in feed mixtures and of heat treatment on changes in the contents of dipeptides anserine and carnosine in meat of fast-growing Hubbard Flex chickens. RESULTS The study demonstrated a significant effect of dietary administration of β-alanine on anserine content in breast muscles and on carnosine content in leg muscles of the chickens. A successive increase in dipeptide content was observed with increasing β-alanine content in the feed mixture. As a result of heat treatment, a significant (P ≤ 0.01) increase was observed in the anserine content of both breast and leg muscles: over twofold higher anserine content was detected in heat-treated muscles compared with raw muscles. The study showed that interesting effects might occur during β-alanine administration to feed mixtures for chickens, especially including increased contents of anserine and carnosine in skeletal muscles of the birds. CONCLUSION Taking into account the well-documented health-promoting effect of histidine dipeptides and possibilities of increasing their contents in the body by supplementation with β-alanine, anserine and carnosine might be considered as potential components of functional foods.
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Affiliation(s)
- Monika Łukasiewicz
- Department of Poultry Breeding, Faculty of Animal Science, Warsaw University of Life Sciences, Warsaw, Poland
| | - Kamila Puppel
- Department of Cattle Breeding, Faculty of Animal Science, Warsaw University of Life Sciences, Warsaw, Poland
| | - Beata Kuczyńska
- Department of Cattle Breeding, Faculty of Animal Science, Warsaw University of Life Sciences, Warsaw, Poland
| | - Maciej Kamaszewski
- Department of Ichthyobiology and Fisheries, Faculty of Animal Science, Warsaw University of Life Sciences, Warsaw, Poland
| | - Jan Niemiec
- Department of Poultry Breeding, Faculty of Animal Science, Warsaw University of Life Sciences, Warsaw, Poland
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Abstract
SIGNIFICANCE The molecular mechanism of aging is still vigorously debated, although a general consensus exists that mitochondria are significantly involved in this process. However, the previously postulated role of mitochondrial-derived reactive oxygen species (ROS) as the damaging agents inducing functional loss in aging has fallen out of favor in the recent past. In this review, we critically examine the role of ROS in aging in the light of recent advances on the relationship between mitochondrial structure and function. RECENT ADVANCES The functional mitochondrial respiratory chain is now recognized as a reflection of the dynamic association of respiratory complexes in the form of supercomplexes (SCs). Besides providing kinetic advantage (channeling), SCs control ROS generation by the respiratory chain, thus providing a means to regulate ROS levels in the cell. Depending on their concentration, these ROS are either physiological signals essential for the life of the cell or toxic species that damage cell structure and functions. CRITICAL ISSUES We propose that under physiological conditions the dynamic nature of SCs reversibly controls the generation of ROS as signals involved in mitochondrial-nuclear communication. During aging, there is a progressive loss of control of ROS generation so that their production is irreversibly enhanced, inducing a vicious circle in which signaling is altered and structural damage takes place. FUTURE DIRECTIONS A better understanding on the forces affecting SC association would allow the manipulation of ROS generation, directing these species to their physiological signaling role.
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Affiliation(s)
- Maria Luisa Genova
- Dipartimento di Scienze Biomediche e Neuromotorie, Alma Mater Studiorum-Università di Bologna , Bologna, Italy
| | - Giorgio Lenaz
- Dipartimento di Scienze Biomediche e Neuromotorie, Alma Mater Studiorum-Università di Bologna , Bologna, Italy
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Ugur S, Ulu R, Dogukan A, Gurel A, Yigit IP, Gozel N, Aygen B, Ilhan N. The renoprotective effect of curcumin in cisplatin-induced nephrotoxicity. Ren Fail 2015; 37:332-6. [PMID: 25594614 DOI: 10.3109/0886022x.2014.986005] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The polyphenol curcumin has several pharmacological effects, including antioxidant, anti-inflammatory and anti-cancer features. In this study, we evaluated the effects of curcumin in cisplatin-induced nephrotoxicity in rats. Male Wistar rats were divided into four groups: (1) control; (2) cisplatin (7 mg/kg body weight, intraperitoneal as a single dose); (3) curcumin (100 mg/kg via gavage, for 10 days); and (4) cisplatin and curcumin. The cisplatin-treated rats exhibited kidney injury manifested by increased serum urea and creatinine (p<0.05). The kidney tissue from the cisplatin treated rats also exhibited a significant increase in the malondialdehyde (MDA) levels (p<0.05). The treatment with curcumin prevented a rise in the serum urea, creatinine and MDA levels when compared to the control group kidneys (p<0.05). The analysis the nicotinamide phosphoribosyltransferase (NAMPT) and sirtuin (SIRT) proteins (SIRT1, SIRT3 and SIRT4), which play important roles in the resistance to stress and the modulation of the threshold of cell death, showed similar trends (p<0.05). In the cisplatin-only treated rats, the induced renal injury decreased the levels of the NAMPT and SIRT proteins. Conversely, the curcumin increased the levels of the NAMPT and SIRT proteins in the cisplatin-treated rats (p<0.05). These data suggest that curcumin can potentially be used to reduce chemotherapy-induced nephrotoxicity, thereby enhancing the therapeutic window of cisplatin.
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Affiliation(s)
- Sıddık Ugur
- Department of Nephrology, Medical Faculty, Firat University , Elazig , Turkey and
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20
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Aydın AF, Çoban J, Doğan-Ekici I, Doğru-Abbasoğlu S, Uysal M, Koçak-Toker N. Carnosine and vitamin E - a promising pair in the combat against testicular oxidative stress in aged rats. Andrologia 2014; 47:1131-8. [DOI: 10.1111/and.12392] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2014] [Indexed: 02/01/2023] Open
Affiliation(s)
- A. F. Aydın
- Department of Biochemistry; İstanbul Medical Faculty; Istanbul University; Çapa İstanbul Turkey
| | - J. Çoban
- Department of Biochemistry; Yeditepe University Medical Faculty; Kayışdağı İstanbul Turkey
| | - I. Doğan-Ekici
- Department of Medical Pathology; Yeditepe University Medical Faculty; Kayışdağı İstanbul Turkey
| | - S. Doğru-Abbasoğlu
- Department of Biochemistry; İstanbul Medical Faculty; Istanbul University; Çapa İstanbul Turkey
| | - M. Uysal
- Department of Biochemistry; İstanbul Medical Faculty; Istanbul University; Çapa İstanbul Turkey
| | - N. Koçak-Toker
- Department of Biochemistry; İstanbul Medical Faculty; Istanbul University; Çapa İstanbul Turkey
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21
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Rane S, Das R, Ranganathan V, Prabhu S, Das A, Mattoo H, Durdik JM, George A, Rath S, Bal V. Peripheral residence of naïve CD4 T cells induces MHC class II-dependent alterations in phenotype and function. BMC Biol 2014; 12:106. [PMID: 25528158 PMCID: PMC4306244 DOI: 10.1186/s12915-014-0106-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 12/05/2014] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND As individual naïve CD4 T lymphocytes circulate in the body after emerging from the thymus, they are likely to have individually varying microenvironmental interactions even in the absence of stimulation via specific target recognition. It is not clear if these interactions result in alterations in their activation, survival and effector programming. Naïve CD4 T cells show unimodal distribution for many phenotypic properties, suggesting that the variation is caused by intrinsic stochasticity, although underlying variation due to subsets created by different histories of microenvironmental interactions remains possible. To explore this possibility, we began examining the phenotype and functionality of naïve CD4 T cells differing in a basic unimodally distributed property, the CD4 levels, as well as the causal origin of these differences. RESULTS We examined separated CD4hi and CD4lo subsets of mouse naïve CD4 cells. CD4lo cells were smaller with higher CD5 levels and lower levels of the dual-specific phosphatase (DUSP)6-suppressing micro-RNA miR181a, and responded poorly with more Th2-skewed outcomes. Human naïve CD4lo and CD4hi cells showed similar differences. Naïve CD4lo and CD4hi subsets of thymic single-positive CD4 T cells did not show differences whereas peripheral naïve CD4lo and CD4hi subsets of T cell receptor (TCR)-transgenic T cells did. Adoptive transfer-mediated parking of naïve CD4 cells in vivo lowered CD4 levels, increased CD5 and reactive oxygen species (ROS) levels and induced hyporesponsiveness in them, dependent, at least in part, on availability of major histocompatibility complex class II (MHCII) molecules. ROS scavenging or DUSP inhibition ameliorated hyporesponsiveness. Naïve CD4 cells from aged mice showed lower CD4 levels and cell sizes, higher CD5 levels, and hyporesponsiveness and Th2-skewing reversed by DUSP inhibition. CONCLUSIONS Our data show that, underlying a unimodally distributed property, the CD4 level, there are subsets of naïve CD4 cells that vary in the time spent in the periphery receiving MHCII-mediated signals and show resultant alteration of phenotype and functionality via ROS and DUSP activity. Our findings also suggest the feasibility of potential pharmacological interventions for improved CD4 T cell responses during vaccination of older people via either anti-oxidant or DUSP inhibitor small molecules.
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Affiliation(s)
- Sanket Rane
- National Institute of Immunology, New Delhi, 110067, India.
| | - Rituparna Das
- National Institute of Immunology, New Delhi, 110067, India. .,Current address: Yale Cancer Center, Sterling Hall of Medicine, New Haven, USA.
| | - Vidya Ranganathan
- National Institute of Immunology, New Delhi, 110067, India. .,Current address: Division of Genetics & Development, Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada.
| | - Savit Prabhu
- National Institute of Immunology, New Delhi, 110067, India. .,Current address: Pediatric Biology Centre, Translational Health Sciences and Technology Institute, Gurgaon, India.
| | - Arundhoti Das
- National Institute of Immunology, New Delhi, 110067, India.
| | - Hamid Mattoo
- National Institute of Immunology, New Delhi, 110067, India. .,Current address: MGH Cancer Center, Charlestown, USA.
| | - Jeannine Marie Durdik
- Department of Biological Sciences, University of Arkansas, Fayetteville, Arkansas, USA.
| | - Anna George
- National Institute of Immunology, New Delhi, 110067, India.
| | - Satyajit Rath
- National Institute of Immunology, New Delhi, 110067, India.
| | - Vineeta Bal
- National Institute of Immunology, New Delhi, 110067, India.
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Yang X, Xiang X, Xia M, Su J, Wu Y, Shen L, Xu Y, Sun L. Inhibition of JNK3 Promotes Apoptosis Induced by BH3 Mimetic S1 in Chemoresistant Human Ovarian Cancer Cells. Anat Rec (Hoboken) 2014; 298:386-95. [DOI: 10.1002/ar.22991] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/24/2014] [Accepted: 05/29/2014] [Indexed: 01/19/2023]
Affiliation(s)
- Xiaochun Yang
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
| | - Xiyan Xiang
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
| | - Meihui Xia
- Department of Obstetrics and Gynecology, First Hospital; Jilin University; Changchun 130021 People's Republic of China
| | - Jing Su
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
| | - Yao Wu
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
| | - Luyan Shen
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
| | - Ye Xu
- Medical Research Laboratory; Jilin Medical College; Jilin 132013 People's Republic of China
- Department of Histology and Embryology; Jilin Medical College; Jilin 132013 People's Republic of China
| | - Liankun Sun
- Department of Pathophysiology, Basic College of Medicine; Jilin University; Changchun 130021 People's Republic of China
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Gürler HŞ, Bilgici B, Akar AK, Tomak L, Bedir A. Increased DNA oxidation (8-OHdG) and protein oxidation (AOPP) by low level electromagnetic field (2.45 GHz) in rat brain and protective effect of garlic. Int J Radiat Biol 2014; 90:892-6. [DOI: 10.3109/09553002.2014.922717] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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24
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Çoban J, Öztezcan S, Doğru-Abbasoğlu S, Bingül I, Yeşil-Mizrak K, Uysal M. Olive leaf extract decreases age-induced oxidative stress in major organs of aged rats. Geriatr Gerontol Int 2014; 14:996-1002. [DOI: 10.1111/ggi.12192] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/10/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Jale Çoban
- Department of Biochemistry; Yeditepe University Medical Faculty; Istanbul Turkey
| | - Serdar Öztezcan
- Department of Biochemistry; Yeditepe University Medical Faculty; Istanbul Turkey
| | - Semra Doğru-Abbasoğlu
- Department of Biochemistry; Istanbul Medical Faculty; Istanbul University; Istanbul Turkey
| | - Ilknur Bingül
- Department of Biochemistry; Istanbul Medical Faculty; Istanbul University; Istanbul Turkey
| | - Kübra Yeşil-Mizrak
- Department of Biochemistry; Yeditepe University Medical Faculty; Istanbul Turkey
| | - Müjdat Uysal
- Department of Biochemistry; Istanbul Medical Faculty; Istanbul University; Istanbul Turkey
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The effect of sildenafil and udenafil on testicular damage following ischemia-reperfusion injury in rats. J Urol 2014; 192:1272-7. [PMID: 24742592 DOI: 10.1016/j.juro.2014.04.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2014] [Indexed: 11/21/2022]
Abstract
PURPOSE Ischemia-reperfusion injury can cause testicular damage and phosphodiesterase inhibitors are reported to regulate antioxidant activity. We investigated the prevention of ipsilateral and contralateral testicular damage using 2 phosphodiesterase inhibitors after testicular detorsion in rats. MATERIALS AND METHODS A total of 28 adult male rats were randomly divided into 4 groups of 7 each, including group 1-sham operation, group 2-testicular torsion and detorsion, group 3- testicular torsion and detorsion with sildenafil administration before detorsion and group 4- testicular torsion and detorsion with udenafil administration before detorsion. Tissue levels of malondialdehyde, total sulfhydryl and nitrite were evaluated, and histopathological changes in the groups were examined. RESULTS Compared to group 1 significantly increased tissue malondialdehyde (p = 0.001), significantly decreased total sulfhydryl (p = 0.038) and insignificantly increased nitrite were found in group 2. Compared to group 2 malondialdehyde decreased significantly and total sulfhydryl increased significantly in groups 3 and 4. The decrease in nitrite was insignificant in the latter 2 groups. Histopathology revealed increased hemorrhage, congestion and edema in group 2 rats. The testicular injury score was lower in groups 3 and 4. In group 2 grades II to IV injury was detected while most specimens in treated groups showed grade II injury. CONCLUSIONS This study indicates that intraperitoneal administration of sildenafil and udenafil efficiently suppresses radical production while decreasing histological changes after testicular ischemia-reperfusion injury.
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Sahin K, Orhan C, Tuzcu M, Muqbil I, Sahin N, Gencoglu H, Guler O, Padhye SB, Sarkar FH, Mohammad RM. Comparative in vivo evaluations of curcumin and its analog difluorinated curcumin against cisplatin-induced nephrotoxicity. Biol Trace Elem Res 2014; 157:156-63. [PMID: 24415068 DOI: 10.1007/s12011-014-9886-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 01/01/2014] [Indexed: 12/12/2022]
Abstract
Curcumin, a polyphenol, has pharmacological effects including antioxidant, anti-inflammatory and anti-cancer features. In this study, we have performed comparative in vivo evaluations of CDF (curcumin difluorinated) and curcumin in cisplatin-induced nephrotoxicity in rats. Male Wistar rats were divided into four groups: (1) Control; (2) Cisplatin (7 mg/kg body wt, intraperitoneal as a single dose); (3) Cisplatin and CDF (50 mg/rat/day; for 12 days); (4) Cisplatin and curcumin (50 mg/rat/day), for 12 days). Cisplatin treated rats exhibited kidney injury manifested by increased serum N-urea and creatinine (P < 0.001). Kidney from cisplatin treated rats also exhibited significant increase in malondialdehyde (MDA) and 8-isoprostane levels (P < 0.001). Treatment with CDF and curcumin prevented the rise in serum N-urea, creatinine, MDA and 8-isoprostane as compared to experimental control group in kidney (P < 0.05). Compared to curcumin, CDF had greater potential in suppressing cisplatin-induced pro-inflammatory factors NF-κB and COX-2 as well as downstream markers Nrf2 and HO-1 (P < 0.05) in kidney. The analysis on anion transport markers (OAT1 and OAT3) showed a similar trend (CDF > curcumin). CDF could reduce the expression of multi-drug resistance markers OCT1, OCT2, MRP2 and MRP4 to a much greater extent than curcumin (P < 0.05). We also demonstrate that CDF influenced the expression of p-mTOR, p-p70S6K1, p-4E-BP1 and p-Akt. These data suggest that CDF can potentially be used to reduce the chemotherapy induced nephrotoxicity thereby enhancing the therapeutic window of cisplatin. The results also proved that compared to curcumin, CDF has superior protective effect in nephrotoxicity.
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Affiliation(s)
- Kazim Sahin
- Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, Elazig, 23100, Turkey,
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Shen B, He PJ, Shao CL. Norcantharidin induced DU145 cell apoptosis through ROS-mediated mitochondrial dysfunction and energy depletion. PLoS One 2013; 8:e84610. [PMID: 24367681 PMCID: PMC3868658 DOI: 10.1371/journal.pone.0084610] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 11/15/2013] [Indexed: 11/19/2022] Open
Abstract
Norcantharidin (NCTD), a demethylated analog of cantharidin derived from blister beetles, has attracted considerable attentions in recent years due to their definitely toxic properties and the noteworthy advantages in stimulating bone marrow and increasing the peripheral leukocytes. Hence, it is worth studying the anti-tumor effect of NCTD on human prostate cancer cells DU145. It was found that after the treatment of NCTD with different concentrations (25-100 μM), the cell proliferation was significantly inhibited, which led to the appearance of micronucleus (MN). Moreover, the cells could be killed in a dose-/ time-dependent manner along with the reduction of PCNA (proliferating cell nuclear antigen) expression, destruction of mitochondrial membrane potential (MMP), down-regulation of MnSOD, induction of ROS, depletion of ATP, and activation of AMPK (Adenosine 5‘-monophosphate -activated protein kinase) . In addition, a remarkable release of cytochrome c was found in the cells exposed to 100 μM NCTD and exogenous SOD-PEG could eliminate the generation of NCTD-induced MN. In conclusion, our studies indicated that NCTD could induce the collapse of MMP and mitochondria dysfunction. Accumulation of intercellular ROS could eventually switch on the apoptotic pathway by causing DNA damage and depleting ATP.
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Affiliation(s)
- Bo Shen
- Institute of Radiation Medicine, Fudan University, Shanghai, China
- * E-mail: (C-LS); (BS)
| | - Pei-Jie He
- Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Chun-Lin Shao
- Institute of Radiation Medicine, Fudan University, Shanghai, China
- * E-mail: (C-LS); (BS)
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Al-Saleh I, Abduljabbar M, Al-Rouqi R, Elkhatib R, Alshabbaheen A, Shinwari N. Mercury (Hg) exposure in breast-fed infants and their mothers and the evidence of oxidative stress. Biol Trace Elem Res 2013; 153:145-54. [PMID: 23661328 DOI: 10.1007/s12011-013-9687-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 04/25/2013] [Indexed: 11/24/2022]
Abstract
The objective of this work was to assess exposure to mercury (Hg) and its induction of oxidative stress in 155 healthy lactating Saudi mothers and their infants. Samples of breast milk and blood were collected from the mothers, while urine was taken from both infants and mothers. Both urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) were measured in mothers and infants as biomarkers of oxidative stress. The mean concentration of Hg in breast milk was 1.19 μg/L (range 0.012-6.44 μg/L) with only one mother having Hg >4 μg/L, the upper limit established by the US Agency for Toxic Substance and Disease Registry. However, 57.4 % had Hg ≥1 μg/L, the background level for Hg in human milk. The mean urinary Hg corrected for creatinine (Hg-C) in mothers and infants was 1.47 and 7.90 μg/g creatinine, respectively, with a significant correlation between the two (p < 0.001). Urinary Hg levels over 5 μg/g creatinine (the background level in an unexposed population) were found in 3.3 % of mothers and 50.1 % of infants. None of the mothers had total blood Hg above the US Environmental Protection Agency's maximum reference dose of 5.8 μg/L. No correlation was noted between urinary Hg in infants and Hg in breast milk (p > 0.05). Hg in breast milk, though, was associated with Hg in blood (p < 0.001), suggesting the efficient transfer of Hg from blood to milk. Hg in the breast milk of mothers and in the urine of infants affected the excretion of urinary MDA and 8-OHdG, respectively, in a dose-related manner. These findings reveal for the first time lactational exposure to Hg-induced oxidative stress in breast-fed infants, which may play a role in pathogenesis, particularly during neurodevelopment. This will also contribute to the debate over the benefits of breast milk versus the adverse effects of exposure to pollutants. Nevertheless, breastfeeding should not be discouraged, but efforts should be made to identify and eliminate the source of Hg exposure in the population.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Section, Biological and Medical Research Department, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
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Agca CA, Tuzcu M, Gencoglu H, Akdemir F, Ali S, Sahin K, Kucuk O. Lycopene counteracts the hepatic response to 7,12-dimethylbenz[a]anthracene by altering the expression of Bax, Bcl-2, caspases, and oxidative stress biomarkers. PHARMACEUTICAL BIOLOGY 2012; 50:1513-1518. [PMID: 22978712 DOI: 10.3109/13880209.2012.688057] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
CONTEXT Lycopene is a carotenoid found in tomato, watermelon, pink grapefruit, and guava in high concentration. Dietary intake of lycopene has been proposed to inversely correlate with the risk of cancer. It has also been reported to provide protection against cellular damage caused by reactive oxygen species, which makes it worthwhile to study the effect of lycopene on liver damage in rat model. OBJECTIVE In this study, we report the effect of lycopene on 7,12-dimethylbenz[a]-anthracene (DMBA)-induced expression of Bax, Bcl-2, caspases, and oxidative stres biomarkers in the liver. MATERIALS AND METHODS Lycopene was administered orally at 20 mg/kg body weight for 20 weeks followed by the intraperitoneal injection of DMBA (50 mg/kg body weight) on day 1 and day 30 of the experiment. Control rats received vehicle (olive oil) or DMBA alone. Rats were sacrificed after completion of the treatment. RESULTS We observed that the levels of Bax, caspase-3, and caspase-9 decreased to 44, 67, and 43%, respectively, and Bcl-2 increased by 80% in DMBA-treated rats. Lycopene reversed the changes in the respective groups, and decreased the level of Bcl-2 to 25%, while increasing the Bax to 42% when compared to DMBA control. Lycopene increased the expression of caspase-3 (82.09%) and caspase-9 (58.96%), and attenuated the level of hepatic malondialdehyde (41%) and 8-isoprostane (40%) when compared to the respective controls. Glutathione (GSH) decreased significantly in DMBA group (15.89%), but reached the normal level in lycopene-treated animals. Hepatic lycopene concentration in treated rats was 8.2 nmol/g tissue. CONCLUSION The study reports that lycopene counteracts the hepatic response to DMBA by altering the expression of Bax, Bcl-2, caspases, and oxidative stress biomarkers in animal model.
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Affiliation(s)
- Can Ali Agca
- Department of Biology, Faculty of Science Firat University, Elazig, Turkey
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Dede FÖ, Ozden FO, Avcı B. 8-hydroxy-deoxyguanosine levels in gingival crevicular fluid and saliva in patients with chronic periodontitis after initial periodontal treatment. J Periodontol 2012; 84:821-8. [PMID: 22897655 DOI: 10.1902/jop.2012.120195] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND This study evaluates the effects of initial periodontal treatment on the gingival crevicular fluid (GCF) and salivary levels of 8-hydroxy-deoxyguanosine (8-OHdG) as a marker of oxidative deoxyribonucleic acid (DNA) damage in patients with chronic periodontitis (CP). METHODS At baseline, clinical parameters were determined and GCF and saliva samples were obtained from 24 patients with CP and 24 individuals with clinically healthy periodontium. GCF, saliva samples, and clinical periodontal measurements were repeated at day 10, 1 month, and 3 months following initial periodontal therapy in patients with CP. 8-OHdG levels of GCF and saliva samples were investigated by using an enzyme-linked immunosorbent assay. RESULTS Statistically significant higher 8-OHdG levels of GCF and a significant decrease after initial periodontal therapy were determined in the CP group (P <0.001). A significant positive correlation was found between 8-OHdG levels of GCF and clinical periodontal measurements (P <0.001). However, salivary levels of 8-OHdG did not differ between groups or during initial periodontal therapy (P >0.05). CONCLUSIONS This study reveals that DNA injury and oxidative stress increase in tissue cells and especially in periodontal pockets in patients with CP, and the periodontal treatment results in a significant decrease of 8-OHdG levels in the GCF samples. To the best of our knowledge, this study evaluates for the first time, 8-OHdG levels in GCF, which is shown to be more useful as a biomarker than saliva. 8-OHdG was found to be important and may reveal the severity of periodontal disease and the effect of periodontal therapy.
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Ulu R, Dogukan A, Tuzcu M, Gencoglu H, Ulas M, İlhan N, Muqbil I, Mohammad RM, Kucuk O, Sahin K. Regulation of renal organic anion and cation transporters by thymoquinone in cisplatin induced kidney injury. Food Chem Toxicol 2012; 50:1675-9. [DOI: 10.1016/j.fct.2012.02.082] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/22/2012] [Accepted: 02/26/2012] [Indexed: 12/24/2022]
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Peddireddy V, Siva Prasad B, Gundimeda SD, Penagaluru PR, Mundluru HP. Assessment of 8-oxo-7, 8-dihydro-2'-deoxyguanosine and malondialdehyde levels as oxidative stress markers and antioxidant status in non-small cell lung cancer. Biomarkers 2012; 17:261-8. [PMID: 22397584 DOI: 10.3109/1354750x.2012.664169] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The present investigation was taken up to evaluate the 8-oxo-7,8-dihydro-2'-deoxyguanosine and malondialdehyde as markers of oxidative stress, the levels of antioxidants and the correlations between these oxidative stress markers and antioxidants in lung cancer patients. METHODS The study included 222 patients (158 men and 64 women, age ranging from 32 to 85 years) and 207 control subjects (153 men and 54 women, aged 30-80 years) for the analysis of urinary excretion of 8-oxodG using an ELISA assay, plasma malondialdehyde using spectrophotometer and red cell Cu-Zn SOD and GPx activities by kit methods. RESULTS The levels of 8-oxodG and malondialdehyde were significantly higher (p < 0.001) and red cell superoxide dismutase and glutathione peroxidase activities (p < 0.001) were significantly lower in lung cancer patients than in controls. There was a significantly positive correlation between 8-oxodG and malondialdehyde (r=0.912, p < 0.001) and a negative correlation between 8-oxodG and antioxidants. CONCLUSIONS Our results demonstrate that an increased rate of oxidative stress might play a role in the pathogenesis of lung cancer as evidenced by a failure in the oxidant/antioxidant balance in favour of lipid peroxidation and DNA damage.
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Affiliation(s)
- Vidyullatha Peddireddy
- Institute of Genetics & Hospital for Genetic Diseases, Osmania University, Begumpet, Hyderabad, Andhra Pradesh, India
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Bondarenko TI, Maiboroda EA, Mikhaleva II, Prudchenko IA. Mechanism of geroprotective action of delta-sleep inducing peptide. ADVANCES IN GERONTOLOGY 2012. [DOI: 10.1134/s2079057011040035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Nikolaidis MG, Kyparos A, Vrabas IS. F2-isoprostane formation, measurement and interpretation: The role of exercise. Prog Lipid Res 2011; 50:89-103. [DOI: 10.1016/j.plipres.2010.10.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 10/02/2010] [Indexed: 01/14/2023]
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Tuzcu M, Sahin N, Dogukan A, Aslan A, Gencoglu H, Ilhan N, Kucuk O, Sahin K. Protective Role of Zinc Picolinate on Cisplatin-Induced Nephrotoxicity in Rats. J Ren Nutr 2010; 20:398-407. [DOI: 10.1053/j.jrn.2010.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2009] [Indexed: 12/24/2022] Open
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Effect of carnosine treatment on oxidative stress in serum, apoB-containing lipoproteins fraction and erythrocytes of aged rats. Pharmacol Rep 2010; 62:733-9. [DOI: 10.1016/s1734-1140(10)70331-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 11/19/2009] [Indexed: 12/31/2022]
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Kang N, Zhang JH, Qiu F, Tashiro SI, Onodera S, Ikejima T. Inhibition of EGFR signaling augments oridonin-induced apoptosis in human laryngeal cancer cells via enhancing oxidative stress coincident with activation of both the intrinsic and extrinsic apoptotic pathways. Cancer Lett 2010; 294:147-58. [PMID: 20202741 DOI: 10.1016/j.canlet.2010.01.032] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 01/09/2010] [Accepted: 01/24/2010] [Indexed: 12/14/2022]
Abstract
Oridonin, a bioactive diterpenoid isolated from Rabdosia rubescens, has been reported to have anti-tumor effects, while the epidermal growth factor receptor (EGFR) signal pathway has been reported to play a vital role in the biological progression of several tumors and to be a target for therapeutic intervention. In this work, we show that inhibition of EGFR with tyrphostin AG1478 enhances oridonin-induced cell death in human laryngeal cancer cells HEp-2, a cell line characterized by EGFR gene amplification. The enhanced apoptotic effect correlates with high expression and activation of Bax, FADD, caspase-8 as well as caspase-3 and decreased protein levels of Bcl(2) and SIRT1, suggesting that both the extrinsic and intrinsic apoptosis pathways are involved in the apoptotic processes. However, treatment with oridonin and AG1478 greatly enhances nuclear translocation of apoptosis inducing factor (AIF) without caspase-9 activation, indicating that the apoptosis occurs via a caspase-9-independent mitochondrial pathway. Here, it is the active form of caspase-8 but not caspase-9 that activates downstream effector caspase-3, resulting in the cleavage of critical cellular proteins and apoptosis. Furthermore, the combined use of AG1478 and oridonin augments the production of reactive oxygen species (ROS). Incubation of cells with N-Acetylcysteine (NAC) attenuates the apoptosis and the mitochondrial membrane potential (Deltapsim) disruption induced by the combination of oridonin and AG1478, which indicates that ROS plays a pivotal role in cell death. In conclusion, targeting EGFR combined with other conventional pro-apoptotic drugs should be a potentially very effective anti-neoplastic therapy for laryngeal cancer.
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Affiliation(s)
- Ning Kang
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, PR China.
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Dogukan A, Tuzcu M, Juturu V, Cikim G, Ozercan I, Komorowski J, Sahin K. Effects of chromium histidinate on renal function, oxidative stress, and heat-shock proteins in fat-fed and streptozotocin-treated rats. J Ren Nutr 2009; 20:112-20. [PMID: 19616452 DOI: 10.1053/j.jrn.2009.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE Chromium is an essential element for carbohydrate, fat, and protein metabolism. The therapeutic potential of chromium histidinate (CrHis) in the treatment of diabetes has been elucidated. The present study investigated the effects of CrHis on serum parameters of renal function, on oxidative stress markers (malondialdehyde [MDA] and 8-isoprostane), and on the expression of heat-shock proteins (HSPs) in rats. METHODS Male Wistar rats (n=60, 8 weeks old) were divided into four groups. Group 1 received a standard diet (12% of calories as fat). Group 2 received a standard diet, plus CrHis. Group 3 received a high-fat diet (40% of calories as fat) for 2 weeks, and was then injected with streptozotocin (STZ) on day 14 (STZ, 40 mg/kg intraperitoneally). Group 4 was treated in the same way as group 3 (HFD/STZ), but was supplemented with 110 microg CrHis/kg/body weight/day. Oxidative stress in the kidneys of diabetic rats was evidenced by an elevation in levels of MDA and 8-isoprostane. Protein concentrations of HSP60 and HSP70 in renal tissue were determined by Western blot analyses. RESULTS Chromium histidinate supplementation lowered kidney concentrations of MDA, 8-isoprostane levels, serum urea-N, and creatinine, and reduced the severity of renal damage in the STZ-treated group (i.e., the diabetes-induced group). The expression of HSP60 and HSP70 was lower in the STZ group that received CrHis than in the group that did not. No significant effect of CrHis supplementation was detected in regard to the overall measured parameters in the control group. CONCLUSIONS Chromium histidinate significantly decreased lipid peroxidation levels and HSP expression in the kidneys of experimentally induced diabetic rats. This study supported the efficacy of CrHis in reducing renal risk factors and impairment because of diabetes.
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Affiliation(s)
- Ayhan Dogukan
- Department of Nephrology, School of Medicine, Firat University, Elazig, Turkey
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Yang J, Wu LJ, Tashino SI, Onodera S, Ikejima T. Critical roles of reactive oxygen species in mitochondrial permeability transition in mediating evodiamine-induced human melanoma A375-S2 cell apoptosis. Free Radic Res 2009; 41:1099-108. [PMID: 17886031 DOI: 10.1080/10715760701499356] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Previous studies have shown that evodiamine could trigger apoptosis in human malignant melanoma A375-S2 cells within 24 h. To further investigate the biochemical basis of this activity, the roles of reactive oxygen species (ROS) and mitochondrial permeability transition (MPT) were evaluated. Exposure to evodiamine led to a rapid increase in intracellular ROS followed by an onset of mitochondrial depolarization. ROS scavenger rescued the DeltaPsim dissipation and cell death induced by evodiamine, whilst MPT inhibitor blocked the second-time ROS formation as well as cell death. Expressions of key proteins in Fas- and mitochondria-mediated pathways were furthermore examined. Both pathways were activated and regulated by ROS and MPT and were converged to a final common pathway involving the activation of caspase-3. These data suggested that a phenomenon termed ROS-induced ROS release (RIRR) was involved in evodiamine-treated A375-S2 cells and greatly contributed to the apoptotic process through both extrinsic and intrinsic pathways.
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Affiliation(s)
- Jia Yang
- China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang, PR China
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Wang Q, Zhao X, He S, Liu Y, An M, Ji J. Differential proteomics analysis of specific carbonylated proteins in the temporal cortex of aged rats: the deterioration of antioxidant system. Neurochem Res 2009; 35:13-21. [PMID: 19562484 DOI: 10.1007/s11064-009-0023-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Accepted: 06/15/2009] [Indexed: 01/02/2023]
Abstract
Oxidative stress plays a pivotal role in normal brain aging and various neurodegenerative diseases, including Alzheimer's disease (AD). Irreversible protein carbonylation, a widely used marker for oxidative stress, rises during aging. The temporal cortex is essential for learning and memory and particularly susceptible to oxidative stress during aging and in AD patients. In this study, we used 2-DE, MALDI-TOF/TOF MS, and Western blotting to analyze the differentially carbonylated proteins in the rat temporal cortex between 1-month-old and 24-month-old. We showed that the carbonyl levels of ten protein spots corresponding to six gene products: SOD1, SOD2, peroxiredoxin 1, peptidylprolyl isomerase A, cofilin 1, and adenylate kinase 1, significantly increased in the temporal cortex of aged rats. These proteins are associated with antioxidant defense, the cytoskeleton, and energy metabolism. Several oxidized proteins identified in aged rat brain are known to be involved in neurodegenerative disorders as well. Our findings indicate that these carbonylated proteins may be implicated in the decline of normal brain aging process and provide insights into the mechanisms underlying age-associated dysfunction of temporal cortex.
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Affiliation(s)
- Qingsong Wang
- The National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, 100871 Beijing, People's Republic of China.
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Aydın AF, Küçükgergin C, Özdemirler-Erata G, Koçak-Toker N, Uysal M. The effect of carnosine treatment on prooxidant–antioxidant balance in liver, heart and brain tissues of male aged rats. Biogerontology 2009; 11:103-9. [DOI: 10.1007/s10522-009-9232-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Accepted: 04/27/2009] [Indexed: 11/30/2022]
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Wong YT, Gruber J, Jenner AM, Ng MPE, Ruan R, Tay FEH. Elevation of oxidative-damage biomarkers during aging in F2 hybrid mice: protection by chronic oral intake of resveratrol. Free Radic Biol Med 2009; 46:799-809. [PMID: 19159678 DOI: 10.1016/j.freeradbiomed.2008.12.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 12/07/2008] [Accepted: 12/09/2008] [Indexed: 10/21/2022]
Abstract
Resveratrol (RSV), a naturally occurring phytoalexin that can be found in red wine, berries, and peanuts, has been shown to extend both mean and maximum life span in model organisms. RSV has also been reported to shift the physiology of middle-aged mice on a high-calorie diet toward that of mice on a standard diet. These beneficial effects of RSV have been suggested to resemble caloric restriction. Our study in F2 four-way cross-hybrid mice was the first to evaluate the effects of aging and long-term RSV treatment (14.09+/-3.4 mg/L in drinking water for 6 or 12 months) on biomarkers of oxidative damage to DNA, 8-hydroxy-2'-deoxyguanosine (8OHdG); lipid, 8-iso-prostaglandin(2 alpha) (8-iso-PGF(2 alpha)); and protein, protein carbonyl content (PCC). There was a significant age-dependent accumulation of oxidative damage to DNA, lipid, and protein as well as a clear increase in urine 8-iso-PGF(2 alpha) levels in the majority of mouse tissues. Rates of age-dependent increases in damage biomarkers varied between tissues. Chronic RSV treatment elevated total RSV plasma levels and reduced the observed age-dependent accumulation of (1) 8OHdG in liver and heart, (2) 8-iso-PGF(2 alpha) in heart and urine, and (3) PCC in liver and kidney. However, a 12-month RSV intake resulted in significant elevation of 8-iso-PGF(2 alpha) and PCC in kidney. Our studies demonstrate that RSV treatment consistently attenuated oxidative damage in tissues where age-related oxidative damage accumulation was prominent, but also suggested that chronic RSV treatment may induce nephrotoxicity.
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Affiliation(s)
- Yee Ting Wong
- Cancer and Ageing Research Group, Institute of Bioengineering and Nanotechnology, Singapore
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Limón-Pacheco J, Gonsebatt ME. The role of antioxidants and antioxidant-related enzymes in protective responses to environmentally induced oxidative stress. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2009; 674:137-47. [DOI: 10.1016/j.mrgentox.2008.09.015] [Citation(s) in RCA: 438] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Accepted: 09/18/2008] [Indexed: 01/05/2023]
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Kiray M, Bagriyanik HA, Ergur BU, Pekcetin C, Topcu A. Antioxidant and antiapoptotic activities of deprenyl and estradiol co-administration in aged rat kidney. ACTA BIOLOGICA HUNGARICA 2009; 60:69-77. [PMID: 19378925 DOI: 10.1556/abiol.60.2009.1.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Aging is a progressive degeneration process in living organisms. Deprenyl is an irreversible monoamine-oxidase B inhibitor which has antioxidant, antiapoptotic and neuroprotective effects. Estradiol is also a neuroprotective and antioxidant hormone. The objective of this study was to determine whether the antioxidative effects of deprenyl can suppress apoptotic activity, with or without estradiol, in aged female rat kidney. Wistar Albino female rats were divided into six groups as follows; young (3 months old) control, aged (24 months old) control, aged deprenyl treated, aged estradiol treated, aged deprenyl plus estradiol treated and sham. All rats except for the sham group were injected for 21 days. Determination of oxidative stress parameter was performed spectrophotometrically. To detect apoptotic cells, TUNEL staining and caspase-3 immunohistochemistry were performed. Deprenyl and estradiol administration, alone or in combination, decreased significantly the levels of lipid peroxidation relative to aged control and sham-injected rats. The number of TUNEL positive cells decreased significantly in deprenyl and estradiol-treated rats compared with aged control and sham rats. Deprenyl and estradiol replacement attenuated age-related changes in renal morphology. The results indicate that deprenyl treatment alone, or in combination with estradiol, may modulate age-related apoptotic changes in rat kidney by decreasing oxidative stress.
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Affiliation(s)
- Muge Kiray
- Department of Histology & Embryology, Dokuz Eylul University Medical School, Balcova, Izmir 35340, Turkey.
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Palaniyappan A. Cyclophosphamide induces premature senescence in normal human fibroblasts by activating MAP kinases. Biogerontology 2009; 10:677-82. [DOI: 10.1007/s10522-009-9215-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2008] [Accepted: 01/22/2009] [Indexed: 12/17/2022]
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Parildar H, Dogru-Abbasoglu S, Mehmetçik G, Ozdemirler G, Koçak-Toker N, Uysal M. Lipid peroxidation potential and antioxidants in the heart tissue of beta-alanine- or taurine-treated old rats. J Nutr Sci Vitaminol (Tokyo) 2008; 54:61-5. [PMID: 18388409 DOI: 10.3177/jnsv.54.61] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this study was to investigate the effect of the changes of taurine levels in the hearts of old rats on endogenous malondialdehyde (MDA) and diene conjugate (DC) levels and ascorbic acid (AA)- and NADPH-induced lipid peroxidation as well as non-enzymatic (glutathione, vitamin E and vitamin C) and enzymatic antioxidants (superoxide dismutase, glutathione peroxidase and glutathione transferase). Two groups of old (22 mo) rats were treated with beta-alanine (3%, w/v; in drinking water), a taurine depleting agent, or taurine (2% w/v; in drinking water) for 6 wk. Significant decreases were observed in taurine contents of hearts in old rats as compared to young (5 mo) rats. We found that MDA and DC levels and AA- and NADPH-induced lipid peroxidation increased, but non-enzymatic and enzymatic antioxidants did not alter in heart homogenates of aged rats. beta-Alanine administration resulted in significant decreases in heart taurine levels of old rats. This treatment did not cause further increases in MDA or DC levels or changes in antioxidants. However, AA- and NADPH-induced lipid peroxidation was higher than that of old rats. Taurine treatment caused significant increases in heart taurine levels of old rats. This treatment was found to decrease endogenous MDA and DC levels without affecting the antioxidant system in the heart homogenates of aged rats. AA- and NADPH-induced lipid peroxidation was also reduced in old rats when given taurine, although not statistically significantly. Our results indicate that the changes in heart taurine levels may influence the susceptibility of heart tissue to lipid peroxidation in aged rats and that taurine supplementation has protective effects on age-dependent oxidative stress in heart tissue.
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Affiliation(s)
- Hande Parildar
- Department of Biochemistry, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
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Filippin LI, Vercelino R, Marroni NP, Xavier RM. Redox signalling and the inflammatory response in rheumatoid arthritis. Clin Exp Immunol 2008; 152:415-22. [PMID: 18422737 DOI: 10.1111/j.1365-2249.2008.03634.x] [Citation(s) in RCA: 227] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Reactive oxygen species (ROS) are produced mainly during oxidative phosphorylation and by activated phagocytic cells during oxidative burst. The excessive production of ROS can damage lipids, protein, membrane and nucleic acids. They also serve as important intracellular signalling that enhances the inflammatory response. Many studies have demonstrated a role of ROS in the pathogenesis of inflammatory chronic arthropathies, such as rheumatoid arthritis. It is known that ROS can function as a second messenger to activate nuclear factor kappa-B, which orchestrates the expression of a spectrum of genes involved in the inflammatory response. Therefore, an understanding of the complex interactions between these pathways might be useful for the development of novel therapeutic strategies for rheumatoid arthritis.
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Affiliation(s)
- L I Filippin
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Calişkan-Can E, Firat H, Ardiç S, Simşek B, Torun M, Yardim-Akaydin S. Increased levels of 8-hydroxydeoxyguanosine and its relationship with lipid peroxidation and antioxidant vitamins in lung cancer. Clin Chem Lab Med 2008; 46:107-12. [PMID: 18194082 DOI: 10.1515/cclm.2008.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Reactive oxygen species produced either endogenously or exogenously can attack lipids, proteins and DNA in human cells and cause potentially deleterious consequences. In recent years, their role in the pathogenesis of lung cancer and the preventive effect of antioxidants have been studied extensively. In this study, our aim was to investigate the levels of 8-hydroxy-2'-deoxyguanosine (8OHdG) and malondialdehyde as a marker for the effects of reactive oxygen species on DNA and lipids, the levels of antioxidant vitamins and the correlations between these oxidative stress markers and antioxidants in lung cancer. METHODS Serum malondialdehyde, beta-carotene, retinol, and vitamins C and E were measured by high-performance liquid chromatography methods in fasting blood samples and 8OHdG was measured by gas chromatography-mass spectrometry in 24-h urine samples of patients with lung cancer (n=39) and healthy controls (n=31). RESULTS The levels of 8OHdG and malondialdehyde were significantly higher (p<0.05 and p<0.005, respectively) and beta-carotene, retinol, and vitamins C and E (p<0.0001, p<0.0001, p<0.0001, and p<0.05, respectively) were significantly lower in patients than in controls. There was a significantly positive correlation between 8OHdG and malondialdehyde (r=0.463, p=0.01) and a negative correlation between the levels of 8OHdG and retinol (r=-0.419, p=0.021) in the patient group. CONCLUSIONS Our results demonstrate that the oxidant/antioxidant balance was spoiled in favor of lipid peroxidation and DNA damage in lung cancer patients. Significant increases in the levels of malondialdehyde and 8OHdG and decreases in the levels of antioxidants suggest the possible involvement of oxidative stress in lung cancer.
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Affiliation(s)
- Emel Calişkan-Can
- Department of Biochemistry, Faculty of Pharmacy, Gazi University, Etiler, and Department of Chest Diseases, Social Insurance Educational Hospital of Ankara, Turkey
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Kiray M, Ergur BU, Bagriyanik A, Pekcetin C, Aksu I, Buldan Z. Suppression of apoptosis and oxidative stress by deprenyl and estradiol in aged rat liver. Acta Histochem 2007; 109:480-5. [PMID: 17698173 DOI: 10.1016/j.acthis.2007.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Revised: 04/25/2007] [Accepted: 04/26/2007] [Indexed: 11/24/2022]
Abstract
Aging is accompanied by significant structural and functional transformations of all organs and systems. Age-associated increase in apoptotic behavior may cause disease. Older cells are more susceptible to endogenous oxidative damage, and oxidative stress is a potent inducer of apoptosis. Deprenyl is an irreversible monoamine-oxidase B inhibitor which has anti-oxidant, anti-apoptotic and neuroprotective effects. Estrogen is also a neuroprotective and anti-oxidant hormone. The objectives of this study were to determine whether the anti-oxidative effects of deprenyl can suppress apoptotic activity, with or without estradiol, in aged female rat livers. In this study, ovariectomized female Wistar albino rats were divided into six groups as follows; young (3 months old) saline-treated control, aged (24 months old) saline-treated control, aged deprenyl treated, aged estradiol treated, aged deprenyl plus estradiol treated and aged sham controls. All rats except for the sham group were treated for 21 days. Determination of oxidative stress parameters was performed spectrophotometrically. To detect apoptotic cells, TUNEL staining was performed. The results were analyzed by one-way ANOVA post hoc Bonferroni test. Deprenyl and estradiol administration, alone or in combination, decreased significantly the levels of lipid peroxidation and increased superoxide dismutase activity in the liver relative to aged control and sham rats (P<0.05). The number of TUNEL positive cells decreased significantly in deprenyl and estradiol-treated rats compared with aged control and sham rats. The results indicate that deprenyl treatment alone, or in combination with estradiol, may modulate age-related apoptotic changes in rat liver by decreasing oxidative stress.
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Affiliation(s)
- Muge Kiray
- Department of Histology, Dokuz Eylul University Medical School, Balcova, Izmir 35340, Turkey.
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Youn HY, Bantseev V, Bols NC, Cullen AP, Sivak JG. In vitro assays for evaluating the ultraviolet B-induced damage in cultured human retinal pigment epithelial cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2007; 88:21-8. [PMID: 17566755 DOI: 10.1016/j.jphotobiol.2007.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Revised: 04/02/2007] [Accepted: 04/24/2007] [Indexed: 11/18/2022]
Abstract
The present study demonstrates broadband UV-B-induced damage of cultured human retinal pigment epithelial cells as an effort to develop an in vitro model that can be used, along with in vivo research and other in vitro efforts, to evaluate the need for retinal UV protection in humans after cataract removal. The human retinal pigment epithelial cell line, ARPE-19, was cultured in two groups: control and treated. Treated cells were irradiated with three broadband UVB radiations at energy levels of 0.05, 0.1 and 0.2J/cm(2). After irradiation, cells were incubated for 48h while cellular viability, morphology, and phagocytotic activity were analyzed using the Alamar blue assay, confocal microscopy, and fluorescent microspheres. Confocal analysis concentrated on the study of the cell nuclei and mitochondria. The Alamar blue assay of UV-B-exposed cells showed dose and time-dependent decreases in cellular viability in comparison to control cells. Loss of cell viability was measured at the two higher energy levels (0.2 and 0.1J/cm(2)), but the cell group exposed to 0.05J/cm(2) showed no significant viability change at 1-h time point. Morphological evaluation also showed dose and time-dependent degradation of mitochondria and nucleic acids. Cells exposed with 0.05J/cm(2) UVB did not show significant degradation of mitochondria and nucleic acids during the entire culture period. Phagocytotic activity assay data for UVB-exposed cells showed dose-dependent decreases in phagocytotic activity in comparison with the control cells. The control cells have significantly greater capacities for uptake than the 0.1 and 0.2J/cm(2) UV-B-exposed cells, while the 0.05J/cm(2) UV-B-exposed cell group showed no significant difference from the control cell group. The findings suggest that UVB radiation-induced cultured RPE cell damage can be evaluated by assays that probe cellular viability, morphological change, and phagocytotic activity, and that these assay methods together provide a valuable in vitro model for ultraviolet radiation-induced retinal toxicology research.
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Affiliation(s)
- Hyun-Yi Youn
- School of Optometry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1
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