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Dybos SA, Brustad ÅW, Rolfseng T, Kvam S, Olsen OE, Halgunset J, Skogseth H. RNA-Integrity and 8-Isoprostane Levels Are Stable in Prostate Tissue Samples Upon Long-Term Storage at -80°C. Biopreserv Biobank 2020; 19:2-10. [PMID: 32865438 PMCID: PMC7892308 DOI: 10.1089/bio.2019.0136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Sampling of prostate tissue (n = 97) was performed in conjunction with planned radical prostatectomies, in collaboration with Biobank1®. The tissue used in this study was collected during the period 2003-2016, quickly frozen, and kept at -80°C until assayed in 2018. RNA extraction was performed with two different protocols (miRNeasy and mirVana™), and RNA quality was determined by measuring the RNA Integrity Number (RIN). The level of isoprostanes is widely recognized as a specific indicator of lipid peroxidation both in vitro and in vivo. The level of 8-isoprostane was measured because it is the main oxidation product of arachidonic acid, the most abundant phospholipid fatty acid. The level of 8-isoprostane was measured using enzyme immunoassay. There was no statistically significant difference in yield between the samples isolated with the mirVana protocol compared to the miRNeasy protocol. Average RIN was 2.8 units higher with the mirVana extraction protocol compared to the miRNeasy protocol (p < 0.001). For miRNeasy extractions, RINs were 7.1 for prostatectomies in 2005-2007 and 6.2 for those in 2018 (p < 0.001). For mirVana extractions, the difference in RIN score between the two groups regarding years of collection was not statistically significant. There was no significant increase in the levels of 8-isoprostane between the 2005-2007 samples and the 2018. The conclusion is that there is no oxidation of phospholipids with increasing storage time up to 15 years.
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Affiliation(s)
- Sandra Amalie Dybos
- Department of Research and Development, Biobank1, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.,Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Åge Winje Brustad
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Toril Rolfseng
- Department of Research and Development, Biobank1, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Solveig Kvam
- Department of Research and Development, Biobank1, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Oddrun Elise Olsen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Hematology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Jostein Halgunset
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Haakon Skogseth
- Department of Research and Development, Biobank1, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.,Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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2
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Visacri MB, Quintanilha JCF, de Sousa VM, Amaral LS, de F. L. Ambrósio R, Calonga L, Curi SFBB, de T. Leme MF, Chone CT, Altemani JMC, Mazzola PG, Malaguti C, Vercesi AE, Lima CSP, Moriel P. Can acetylcysteine ameliorate cisplatin-induced toxicities and oxidative stress without decreasing antitumor efficacy? A randomized, double-blind, placebo-controlled trial involving patients with head and neck cancer. Cancer Med 2019; 8:2020-2030. [PMID: 30977273 PMCID: PMC6536930 DOI: 10.1002/cam4.2072] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/13/2019] [Accepted: 02/14/2019] [Indexed: 01/22/2023] Open
Abstract
The protective antioxidant activity of acetylcysteine (NAC) against toxicity due to cisplatin has been reported in experimental models; however, its efficacy in patients has not been elucidated. The aim of this study was to investigate the possible protective effect of NAC on cisplatin-induced toxicity and the effect of NAC on clinical response and oxidative stress in patients treated for head and neck cancer. This was a randomized, double-blind, placebo-controlled trial conducted in patients receiving high-dose cisplatin chemotherapy concomitant to radiotherapy. Patients were randomly assigned to groups and received: (a) 600 mg NAC syrup, orally once daily at night for 7 consecutive days or (b) placebo, administered similarly to NAC. Nephro-, oto-, hepato-, myelo-, and gastrointestinal toxicities, clinical responses, and plasma and cellular markers of oxidative stress were evaluated. Fifty-seven patients were included (n = 28, NAC arm; and n = 29, placebo arm). A high prevalence of most types of toxicities was observed after cisplatin chemotherapy; however, the parameters were similar between the two groups. There was a predominance of partial response to treatment. In the cellular and plasmatic oxidative stress analyses, minor differences were observed. Overall, there was no statistically significant difference between the groups for all outcomes. These findings show that low-dose oral NAC does not protect patients with head and neck cancer from cisplatin-induced toxicities and oxidative stress. The antitumor efficacy of cisplatin was apparently not impaired by NAC.
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Affiliation(s)
| | | | | | - Laís S. Amaral
- School of Medical SciencesUniversity of CampinasCampinasBrazil
| | | | | | | | | | | | | | | | - Carina Malaguti
- School of Medical SciencesUniversity of CampinasCampinasBrazil
| | | | | | - Patricia Moriel
- Faculty of Pharmaceutical SciencesUniversity of CampinasCampinasBrazil
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3
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Wu C, Chen HC, Chen ST, Chiang SY, Wu KY. Elevation in and persistence of multiple urinary biomarkers indicative of oxidative DNA stress and inflammation: Toxicological implications of maleic acid consumption using a rat model. PLoS One 2017; 12:e0183675. [PMID: 29073142 PMCID: PMC5658196 DOI: 10.1371/journal.pone.0183675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 08/09/2017] [Indexed: 01/20/2023] Open
Abstract
Maleic acid (MA), an intermediate reagent used in many industrial products, instigated public health concerns in Taiwan when it was used to adulterate an array of starch-based delicacies to improve texture and storage time. Established studies reported that exposure to high concentrations of MA induce renal injury; little is known whether oxidative stress is induced at a relative low dose. This study aims to investigate the effect of oral single dose exposure of MA on the status of oxidative stress and inflammation. Single dose of MA at 0, 6 and 60 mg/kg (control, low- and high-dose groups, respectively) were orally administered to adult male and female rats. Urine samples were collected and analyzed to measure 8-hydroxy-2’-deoxyguanosine (8-OHdG), 8-iso-prostaglandin F2α (8-IsoPGF2α), 8-nitroguanine (8-NO2Gua) and N-acetyl-S-(tetrahydro-5-hydroxy-2-pentyl-3-furanyl)-L-cysteine (HNE-MA) using LC-MS/MS. Results revealed that oral consumption of MA induced oxidative DNA damage and lipid peroxidation, as demonstrated by the statistically significant increases in urinary levels of 8-NO2Gua, 8-OHdG, and 8-isoPGF2α, in high-dosed male rats within 12 h of oral gavage (p < 0.05). Additionally, increases in concentration of these biomarkers persist for days after consumption; male rats appear to be more sensitive to oxidative burden compared to their counterparts. The aforementioned findings could help elucidate the mechanisms through which nephrotoxicity occur.
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Affiliation(s)
- Charlene Wu
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Hsin-Chang Chen
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Shu-Ting Chen
- National Environmental Health Research Center, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Su-Yin Chiang
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- * E-mail: (KYW); (SYC)
| | - Kuen-Yuh Wu
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei, Taiwan
- * E-mail: (KYW); (SYC)
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4
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Wu C, Chen CH, Chen HC, Liang HJ, Chen ST, Lin WY, Wu KY, Chiang SY, Lin CY. Nuclear magnetic resonance- and mass spectrometry-based metabolomics to study maleic acid toxicity from repeated dose exposure in rats. J Appl Toxicol 2017; 37:1493-1506. [PMID: 28691739 DOI: 10.1002/jat.3500] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/16/2017] [Accepted: 05/21/2017] [Indexed: 01/11/2023]
Abstract
Maleic acid (MA), a chemical intermediate used in many consumer and industrial products, was intentionally adulterated in a variety of starch-based foods and instigated food safety incidents in Asia. We aim to elucidate possible mechanisms of MA toxicity after repeated exposure by (1) determining the changes of metabolic profile using 1 H nuclear magnetic resonance spectroscopy and multivariate analysis, and (2) investigating the occurrence of oxidative stress using liquid chromatography tandem mass spectrometry by using Sprague-Dawley rat urine samples. Adult male rats were subjected to a 28 day subchronic study (0, 6, 20 and 60 mg kg-1 ) via oral gavage. Urine was collected twice a day on days 0, 7, 14, 21 and 28; organs underwent histopathological examination. Changes in body weight and relative kidney weights in medium- and high-dose groups were significantly different compared to controls. Morphological alterations were evident in the kidneys and liver. Metabolomic results demonstrated that MA exposure increases the urinary concentrations of 8-hydroxy-2'-deoxyguanosine, 8-nitroguanine and 8-iso-prostaglandin F2α ; levels of acetoacetate, hippurate, alanine and acetate demonstrated time- and dose-dependent variations in the treatment groups. Findings suggest that MA consumption escalates oxidative damage, membrane lipid destruction and disrupt energy metabolism. These aforementioned changes in biomarkers and endogenous metabolites elucidate and assist in characterizing the possible mechanisms by which MA induces nephro- and hepatotoxicity.
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Affiliation(s)
- Charlene Wu
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Chi-Hung Chen
- Institute of Environmental Health, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Hsin-Chang Chen
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Hao-Jan Liang
- Institute of Environmental Health, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Shu-Ting Chen
- National Environmental Health Research Center, National Health Research Institutes, No. 35, Keyan Rd., Zhunan, Miaoli County, 35053, Taiwan
| | - Wan-Yu Lin
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Kuen-Yuh Wu
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
| | - Su-Yin Chiang
- School of Chinese Medicine, China Medical University, Taichung, 404, Taiwan
| | - Ching-Yu Lin
- Institute of Environmental Health, College of Public Health, National Taiwan University, No. 17, ShiuJou Rd., Taipei, 10055, Taiwan
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Mohan A, Poulose R, Gupta T, Luthra K, Pandey RM, Madan K, Hadda V, Guleria R. Impact of chemotherapy on symptom profile, oxidant-antioxidant balance and nutritional status in non-small cell Lung Cancer. Lung India 2017; 34:336-340. [PMID: 28671164 PMCID: PMC5504890 DOI: 10.4103/0970-2113.209230] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Lung cancer is associated with an oxidant-antioxidant imbalance that is implicated in tumor progression. However, the association of this imbalance on disease burden and treatment response is unclear. The effect of chemotherapy on oxidative stress, antioxidant status, and nutritional profile in patients with advanced nonsmall cell lung cancer (NSCLC) was prospectively evaluated. SUBJECTS AND METHODS Patients with confirmed cytological/histological diagnosis of NSCLC were recruited. Performance status was determined using the Eastern Cooperative Oncology Group grading and the Karnofsky Performance Scale. Skin fold anthropometry was done for nutritional assessment. All patients received chemotherapy with intravenous carboplatin and paclitaxel at three-weekly intervals. Response was assessed after four cycles by repeat imaging. Plasma levels of total antioxidant status (TAS), malondialdehyde (MDA), and glutathione peroxidase (GPx) levels were estimated using commercially available kits, and the change was correlated with clinical outcome, response to chemotherapy, performance status, and nutritional profile. RESULTS Thirty-five cases were studied (92% males), with a mean (SD) age of 56.2 (9.3) years. Following treatment, majority of patients demonstrated stable disease (n = 15 [42%]), followed by partial response (29%), progressive disease (22%), and complete remission (6%). Significant improvement occurred in respiratory symptoms. Body fat declined while subscapular skinfold thickness and 6-min walk distance increased. Spirometric values and performance status remained unchanged. GPx levels declined significantly while no notable change was observed in MDA and TAS levels. CONCLUSIONS Chemotherapy for NSCLC improves symptoms, nutritional status, and exercise capacity but worsens the antioxidant status.
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Affiliation(s)
- Anant Mohan
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
| | - Rosemary Poulose
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
| | - Tarang Gupta
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
| | | | | | - Karan Madan
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
| | - Vijay Hadda
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
| | - Randeep Guleria
- Department of Pulmonary Medicine and Sleep Disorders, AIIMS, New Delhi, India
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Krawczyk A, Nowak D, Nowak PJ, Padula G, Kwiatkowska S. Elevated exhalation of hydrogen peroxide in patients with non-small cell lung cancer is not affected by chemotherapy. Redox Rep 2016; 22:308-314. [PMID: 27611345 DOI: 10.1080/13510002.2016.1229885] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVES Reactive oxygen species, which are implicated in the process of carcinogenesis, are also responsible for cell death during chemotherapy (CHT). Therefore, the aim of the study was to evaluate exhaled H2O2 levels in non-small cell lung cancer (NSCLC) patients before and after CHT. METHODS Thirty patients (age 61.3 ± 9.3 years) with advanced NSCLC (stage IIIB-IV) and 15 age-matched healthy cigarette smokers were enrolled into the study. Patients received four cycles of cisplatin or carboplatin with vinorelbine every three weeks. Before and after the first, second, and fourth cycle, the concentration of H2O2 in exhaled breath condensate was measured with respect to treatment response. RESULTS At the baseline, NSCLC patients exhaled 3.8 times more H2O2 than the control group (0.49 ± 0.14 vs. 0.13 ± 0.03 µmol/L, P < 0.05); this difference persisted throughout the study. CHT had no noticeable effect on exhaled H2O2 levels independent of the treatment response (partial remission vs. progressive disease). Pre- and post-CHT cycles of H2O2 levels generally correlated positively. DISCUSSION The study demonstrated the occurrence of oxidative stress in the airways of advanced NSCLC patients. Exhaled H2O2 level was not affected by CHT and independent of treatment results and changes in the number of circulating neutrophils.
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Affiliation(s)
| | - Dariusz Nowak
- b Department of Clinical Physiology , Medical University of Lodz , Lodz , Poland
| | - Piotr Jan Nowak
- c Department of Nephrology, Hypertension and Kidney Transplantation , Medical University of Lodz , Lodz , Poland
| | - Gianluca Padula
- d DynamoLab Academic Laboratory of Movement and Human Physical Performance , Medical University of Lodz , Lodz , Poland
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Ribeiro SMDF, Braga CBM, Peria FM, Domenici FA, Martinez EZ, Feres O, da Rocha JJR, da Cunha SFDC. Effect of Zinc Supplementation on Antioxidant Defenses and Oxidative Stress Markers in Patients Undergoing Chemotherapy for Colorectal Cancer: a Placebo-Controlled, Prospective Randomized Trial. Biol Trace Elem Res 2016; 169:8-16. [PMID: 26066525 DOI: 10.1007/s12011-015-0396-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/02/2015] [Indexed: 12/13/2022]
Abstract
The study aimed to investigate the effect of oral zinc supplementation on antioxidant defenses and oxidative stress markers during chemotherapy for colorectal cancer. Twenty-four patients who had undergone surgical resection of colorectal cancer participated in this placebo-controlled, prospective randomized study. The supplementation was started in the perioperative period, in which 10 patients received 70 mg of zinc (zinc group, n = 10) and 14 patients received placebo (placebo group, n = 14) for 16 weeks. Approximately 45 days after surgical resection of tumor, all patients received a chemotherapeutic regimen (capecitabine, capecitabine combined with oxaliplatin or 5-fluorouracil). Vitamin C, vitamin E, antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GPx), and lipid peroxidation markers malondialdehyde (MDA) and 8-isoprostane were determined before the first, second, third, and fourth chemotherapy cycles. Compared with the placebo group, the zinc group presented higher SOD values before the first, second, and fourth chemotherapy cycles and lower GPx values before the third cycle. There were no statistical differences between the study groups in vitamin C, vitamin E, MDA, or 8-isoprostane plasma values. Longitudinal analysis revealed decreased vitamin E concentration in the placebo group before the second and fourth cycles as compared with the initial values. Zinc supplementation during chemotherapy cycles increased SOD activity and maintained vitamin E concentrations. Although no effect of zinc supplementation on oxidative stress markers was observed, the increase in SOD activity indicates a production of stable free radicals, which may have a positive effect in cancer treatment.
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Affiliation(s)
- Sofia Miranda de Figueiredo Ribeiro
- Division of Nutrology, Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Camila Bitu Moreno Braga
- Division of Nutrology, Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Maris Peria
- Division of Clinical Oncology, Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Aparecida Domenici
- Division of Nutrology, Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Edson Zangiacomi Martinez
- Department of Social Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Omar Feres
- Department of Surgery, School of Medicine of RibeirãoPreto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - José Joaquim Ribeiro da Rocha
- Department of Surgery, School of Medicine of RibeirãoPreto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Selma Freire de Carvalho da Cunha
- Division of Nutrology, Department of Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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8
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Santos JM, Jurban M, Kim H. Could sewage epidemiology be a strategy to assess lifestyle and wellness of a large scale population? Med Hypotheses 2015; 85:408-11. [PMID: 26146131 DOI: 10.1016/j.mehy.2015.06.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 06/19/2015] [Indexed: 10/23/2022]
Abstract
The use of sewage epidemiology to estimate the behavior of a large scale population has mainly been used to assess illicit drug use within a community. The systemic oxidative stress marker, 8-isoprostane, is a wildly accepted biomarker for various diseases such as diabetes, and cardiovascular and renal diseases. 8-Isoprostane is detected in urine and, as with illicit drugs, is excreted into urban sewer networks. Initially, we tested the hypothesis that differential 8-isoprostane levels are detected in wastewater of different communities and that 8-isoprostane values adjusted for the flow rate and population size will remain constant over a 2 months period. Sewage samples were collected from three sewage collection points supplied by different communities located in the Detroit metropolitan area and concentration of 8-isoprostane and synthetic plastic component, bisphenol A (BPA), were measured. Levels of 8-isoprostane were constant during the two measured months at each collection point in oppose to BPA levels. When the levels were compared among communities, 8-isoprostane levels in 24h flow and their concentrations per capita in each community varied by more than 5-fold among them. Considering the fact that 8-isoprostane is a biomarker of several diseases, we hypothesize that measurement of 8-isoprostane levels in sewage may serve as a risk assessment tool of oxidative stress-related diseases in a large scale population. Thus, sewage epidemiology can be utilized to obtain an early warning in a community to facilitate intervention for improvement of the community health.
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Affiliation(s)
- Julia M Santos
- Federal University of Goias, Physiology Department, Campus Jatai, Goias, Brazil
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9
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Zheng XN, Wang XW, Li LY, Xu ZW, Huang HY, Zhao JS, Zhang D, Yin X, Sheng J, Tang JT. Pu-erh tea powder preventive effects on cisplatin-induced liver oxidative damage in Wistar rats. Asian Pac J Cancer Prev 2015; 15:7389-94. [PMID: 25227847 DOI: 10.7314/apjcp.2014.15.17.7389] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chemotherapy is one of the major means for control of malignancies, with cisplatin (CDDP) as one of the main agents, widely used for the treatment of various malignant solid tumors. However, prevention of hepatotoxicity from cisplatin is one of the urgent issues in cancer chemotherapy. In this study, we aimed to investigate the effects of pu-erh tea on hepatotoxicity through body weight and tissue antioxidant parameters like, liver coefficient, serum alanine aminotransferase (ALT), serum aspartate aminotransferase (AST), superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), malondialdehyde(MDA) and glutathione (GSH) levels, and light microscopic evaluation by histological findings. MATERIALS AND METHODS The rats were randomly divided into five groups: Control (n=10), cisplatin (3 mg/kg p.i., n=10), cisplatin+pu-erh (0.32 g/kg/day i.g., n=10), cisplatin+pu-erh (0.8 g/kg/day i.g., n=10) and cisplatin+pu-erh (1.6 g/kg/day i.g., n=10). Pu-erh tea powder was administrated for 31 consecutive days. The rats were sacrificed at the end on the second day after a single dose of cisplatin treatment for measuring indices. RESULTS Pu-erh tea powder exhibited a protective effect by decreasing MDA and GSH and increasing the SOD and GSH-PX levels and GSH-PX/MDA ratio in comparison with the control group. Besides, pu-erh tea was also able to alleviate the pathological damage to some extent. CONCLUSION Pu-erh tea powder is protective against cisplatin-induced liver oxidative damages, especially at the medium dosage (0.8 g/kg/d).
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Affiliation(s)
- Xiao-Nan Zheng
- Graduate School of Tianjin University of Traditional Chinese Medicine, Tianjin, China E-mail :
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He YZ, Gu XF, Lu LH, Liang LL. The oxidative molecular regulation mechanism of NOX in children with phenylketonuria. Int J Dev Neurosci 2014; 38:178-83. [PMID: 25256805 DOI: 10.1016/j.ijdevneu.2014.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/12/2014] [Accepted: 09/12/2014] [Indexed: 11/28/2022] Open
Abstract
Phenylketonuria (PKU) is the most frequent inherited disorder of amino acid metabolism. In our previous work, we investigated the role of NADPH oxidase (NOX) in a Pahenu2-BTBR PKU mouse model, and an in vitro cell culture model of PKU. In the current study, we evaluated various oxidative stress parameters, namely total antioxidant capacity (T-AOC), glutathione (GSH) and maleic dialdehyde (MDA) in the plasma of 40 PKU children, for further investigating the oxidative molecular regulation mechanism of NOX in PKU. It was observed that T-AOC and GSH markedly decreased in PKU as compared with the control group (P<0.01), and seemed to correlate negatively with Phe level. However, there was no statistical difference in MDA level among the three groups. And 8-isoprostane in the blood samples of PKU2 groups was slightly higher than control group (P<0.05). Additionally, mRNA levels of subunits of NOX included p47(phox) and p67(phox) significantly increased in PKU group (P<0.01). These results reflected that NOX is the important source of reactive oxygen species and is involved in the oxidative molecular regulation mechanism in PKU, which shows a new perspective toward understanding the biological underpinnings of PKU.
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Affiliation(s)
- Ying-Zhong He
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute for Pediatric Research, 1665 Kongjiang Road, Shanghai 200092, China
| | - Xue-Fan Gu
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute for Pediatric Research, 1665 Kongjiang Road, Shanghai 200092, China.
| | - Li-Hua Lu
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute for Pediatric Research, 1665 Kongjiang Road, Shanghai 200092, China
| | - Li-Li Liang
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Institute for Pediatric Research, 1665 Kongjiang Road, Shanghai 200092, China
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