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Choi SH, Ochirpurev B, Toriba A, Won JU, Kim H. Exposure to Benzo[a]pyrene and 1-Nitropyrene in Particulate Matter Increases Oxidative Stress in the Human Body. Toxics 2023; 11:797. [PMID: 37755807 PMCID: PMC10534303 DOI: 10.3390/toxics11090797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/23/2023] [Accepted: 09/17/2023] [Indexed: 09/28/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) have been reported to cause oxidative stress in metabolic processes. This study aimed to evaluate the relationship between exposure to PAHs, including benzo[a]pyrene (BaP) and 1-nitropyrene (1-NP), in the atmosphere and oxidative stress levels in the human body. This study included 44 Korean adults who lived in Cheongju, Republic of Korea. Atmospheric BaP and 1-NP concentrations and urinary 6-hydroxy-1-nitropyrene (6-OHNP), N-acetyl-1-aminopyrene (1-NAAP), and 1-hydroxypyrene (1-OHP) concentrations were measured. The oxidative stress level was assessed by measuring urinary thiobarbituric acid-reactive substances (TBARS) and 8-hydroxydeoxyguanosine (8-OHdG) concentrations. Urinary TBARS and 6-OHNP concentrations significantly differed between winter and summer. BaP exposure was significantly associated with urinary 8-OHdG concentrations in summer. However, atmospheric 1-NP did not show a significant correlation with oxidative stress marker concentrations. Urinary 1-NAAP concentration was a significant determinant for urinary 8-OHdG concentration in summer. Oxidative stress in the body increases in proportion to inhalation exposure to BaP, and more 8-OHdG is produced in the body as the amount of 1-NP, which is metabolized to 1-AP or 1-NAAP, increases.
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Affiliation(s)
- Sun-Haeng Choi
- Department of Occupational and Environmental Medicine, Chungbuk National University Hospital, Cheongju 28644, Republic of Korea
- Department of Public Health, Graduate School, Yonsei University, Seoul 03722, Republic of Korea
| | - Bolormaa Ochirpurev
- Department of Preventive Medicine, College of Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Akira Toriba
- Department of Hygienic Chemistry, Graduate School of Biomedical Science, Nagasaki University, Nagasaki 852-8521, Japan
| | - Jong-Uk Won
- Department of Public Health, Graduate School, Yonsei University, Seoul 03722, Republic of Korea
| | - Heon Kim
- Department of Occupational and Environmental Medicine, Chungbuk National University Hospital, Cheongju 28644, Republic of Korea
- Department of Preventive Medicine, College of Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
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Varga-Visi É, Jócsák I, Kozma V, Lóki K, Ali O, Szabó A. Effects of Surface Treatment with Thymol on the Lipid Oxidation Processes, Fatty Acid Profile and Color of Sliced Salami during Refrigerated Storage. Foods 2022; 11:foods11233917. [PMID: 36496725 PMCID: PMC9737663 DOI: 10.3390/foods11233917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
The oxidation of unsaturated fatty acids and the adverse transformation of pigments from meat and spices are the primary causes of chemical degradation in processed meat products. Thymol is found in a variety of plant extracts that have been proven to effectively inhibit or slow down oxidative processes. The objective of our study was to determine whether thymol treatment of the surface of sliced paprika salami could be applied to inhibit lipid oxidation and color change during refrigerated storage. During eight weeks of storage, the malondialdehyde (MDA) levels and the ratios of saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), polyunsaturated fatty acids (PUFAs), and n6/n3 in thymol-treated salami remained unchanged (p ≥ 0.05), whereas in the controls, the MDA levels increased by approximately twelvefold and the ratio of SFAs in the lipid fraction increased (p < 0.001), while the ratio of PUFAs decreased (p < 0.001). The application of thymol prevented decrease in yellowness (b*) of the slices and reduced decreases in redness (a*) and brightness (chroma).
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Affiliation(s)
- Éva Varga-Visi
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
- Correspondence:
| | - Ildikó Jócsák
- Department of Agronomy, Institute of Agronomy, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Vanda Kozma
- Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Katalin Lóki
- Department of Chemistry, Institute of Mathematics and Basic Science, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - Omeralfaroug Ali
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
| | - András Szabó
- Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Department of Physiology and Animal Health, Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Guba Sándor Street 40, H-7400 Kaposvár, Hungary
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Palacka P, Kucharská J, Obertová J, Rejleková K, Slopovský J, Mego M, Světlovská D, Kollárik B, Mardiak J, Gvozdjáková A. Changes in CoQ 10/Lipids Ratio, Oxidative Stress, and Coenzyme Q 10 during First-Line Cisplatin-Based Chemotherapy in Patients with Metastatic Urothelial Carcinoma (mUC). Int J Mol Sci 2022; 23:ijms232113123. [PMID: 36361913 PMCID: PMC9657286 DOI: 10.3390/ijms232113123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 11/07/2022] Open
Abstract
Oxidative stress plays an important role in cancer pathogenesis, and thiobarbituric acid-reactive substance level (TBARS)—a parameter of lipid peroxidation—has prognostic significance in chemotherapy-naive patients with metastatic urothelial carcinoma (mUC). However, the effect of cisplatin (CDDP)-based chemotherapy on oxidative stress, coenzyme Q10, and antioxidants remains unknown. The objective of this prospective study was to determine possible changes in the CoQ10 (coenzyme Q10)/lipids ratio, antioxidants (α-tocopherol, γ-tocopherol, β-carotene, CoQ10), total antioxidant status (TAS), and TBARS in plasma at baseline and during first-line chemotherapy based on CDDP in mUC subjects. In this prospective study, 63 consecutive patients were enrolled. The median age was 66 years (range 39−84), performance status according to the Eastern Cooperative Oncology Group (ECOG) was 2 in 7 subjects (11.1%), and visceral metastases were present in 31 (49.2%) patients. Plasma antioxidants were determined by HPLC and TAS and TBARS spectrophotometrically. After two courses of chemotherapy, we recorded significant enhancements compared to baseline for total cholesterol (p < 0.0216), very low-density lipoprotein (VLDL) cholesterol (p < 0.002), triacylglycerols (p < 0.0083), α-tocopherol (p < 0.0044), and coenzyme Q10-TOTAL (p < 0.0001). Ratios of CoQ10/total cholesterol, CoQ10/HDL-cholesterol, and CoQ10/LDL-cholesterol increased during chemotherapy vs. baseline (p < 0.0048, p < 0.0101, p < 0.0032, respectively), while plasma TBARS declined (p < 0.0004). The stimulation of antioxidants could be part of the defense mechanism during CDDP treatment. The increased index of CoQ10-TOTAL/lipids could reflect the effect of CDDP protecting lipoproteins from peroxidation.
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Affiliation(s)
- Patrik Palacka
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
- Correspondence:
| | - Jarmila Kucharská
- Pharmacobiochemical Laboratory of the 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, 813 72 Bratislava, Slovakia
| | - Jana Obertová
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Katarína Rejleková
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Ján Slopovský
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Michal Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Daniela Světlovská
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Boris Kollárik
- Department of Urology, University Hospital in Bratislava, 851 07 Bratislava, Slovakia
| | - Jozef Mardiak
- 2nd Department of Oncology, Faculty of Medicine, Comenius University, 833 10 Bratislava, Slovakia
- National Cancer Institute, 833 10 Bratislava, Slovakia
| | - Anna Gvozdjáková
- Pharmacobiochemical Laboratory of the 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, 813 72 Bratislava, Slovakia
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Bhagat S, Singh P, Parihar AS, Kaur G, Takkar H, Rela R. Assessment of Levels of Plasma Oxidative Stress in Patient Having Aggressive Periodontitis before and after Full Mouth Disinfection. J Pharm Bioallied Sci 2021; 13:S432-S435. [PMID: 34447127 PMCID: PMC8375814 DOI: 10.4103/jpbs.jpbs_599_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 01/14/2023] Open
Abstract
Aim: The primary purpose of the study was to evaluate the levels of oxidative stress in plasma in patients with aggressive periodontitis (AgP) before and after full-mouth disinfection. Materials and Methods: Twenty-five healthy controls and 25 participants with aggressive periodontal were assessed for plaque index, probing pocket depth, papillary bleeding index, and clinical attachment level. Periodontal bone support was assessed by taking full mouth periapical radiographs. Full-mouth disinfection of the patient was done within 24 h of clinical assessment of AgP. These parameters were assessed at the baseline and after 8 weeks of initial periodontal therapy. Plasma samples were taken and evaluated for various oxidative stress markers. Results: Strong positive correlation was observed among periodontal parameters and levels of enzymatic/nonenzymatic biomarkers for oxidative stress (thiobarbituric acid-reactive substances [TBARS], glutathione peroxidase [GPX], and catalase [CAT]) (P < 0.05), before and after periodontal management. The patients with AgP had high levels of TBARS, GPX, and CAT levels in the plasma matched to the healthy individuals (P < 0.05). Conclusion: Enzymatic and nonenzymatic oxidative stress may have a role in the pathogenesis AP. Initial periodontal treatment can lead to the reduction of these stresses.
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Affiliation(s)
- Sachin Bhagat
- Department of Periodontics, D.Y. Patil Dental School, Pune, Maharashtra, India
| | - Parthivi Singh
- Department of Conservative Dentistry and Endodontics, People's Dental Academy, Bhopal, Madhya Pradesh, India
| | - Anuj Singh Parihar
- Department Periodontics, People's Dental Academy, Bhopal, Madhya Pradesh, India
| | - Gurpreet Kaur
- Dental Assistant Clinical Instructor, At Brookline College, Tempe, Arizona, USA
| | - Harsh Takkar
- Department of Conservative Dentistry and Endodontics, Rajasthan Dental College and Hospital, Jaipur, Rajasthan, India
| | - Rathi Rela
- Department of Dentistry, Nalanda Medical College and Hospital, Patna, Bihar, India
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Wang HC, Lin YT, Huang CC, Lin MC, Liaw MY, Lu CH. Effects of Respiratory Muscle Training on Baroreflex Sensitivity, Respiratory Function, and Serum Oxidative Stress in Acute Cervical Spinal Cord Injury. J Pers Med 2021; 11:377. [PMID: 34062971 DOI: 10.3390/jpm11050377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/30/2021] [Accepted: 04/30/2021] [Indexed: 11/24/2022] Open
Abstract
Background: respiratory complications are a leading cause of morbidity and mortality in individuals with spinal cord injury (SCI). We examined the effects of respiratory muscle training (RMT) in patients with acute cervical SCI. Methods: this prospective trial enrolled 44 adults with acute cervical SCI, of which twenty received RMT and twenty-four did not receive RMT. Respiratory function, cardiovascular autonomic function, and reactive oxidative species (ROS) were compared. The experimental group received 40-min high-intensity home-based RMT 7 days per week for 10 weeks. The control group received a sham intervention for a similar period. The primary outcomes were the effects of RMT on pulmonary and cardiovascular autonomic function, and ROS production in individuals with acute cervical SCI. Results: significant differences between the two groups in cardiovascular autonomic function and the heart rate response to deep breathing (p = 0.017) were found at the 6-month follow-up. After RMT, the maximal inspiratory pressure (p = 0.042) and thiobarbituric acid-reactive substances (TBARS) (p = 0.006) improved significantly, while there was no significant difference in the maximal expiratory pressure. Significant differences between the two groups in tidal volume (p = 0.005) and the rapid shallow breathing index (p = 0.031) were found at 6 months. Notably, the SF-36 (both the physical (PCS) and mental (MCS) component summaries) in the RMT group had decreased significantly at the 6-month follow-up, whereas the clinical scores did not differ significantly (p = 0.333) after RMT therapy. Conclusions: High-intensity home-based RMT can improve pulmonary function and endurance and reduce breathing difficulties in patients with respiratory muscle weakness after injury. It is recommended for rehabilitation after spinal cord injury.
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Craig A, Mels CMC, Kruger R. Thiobarbituric acid-reactive substances relate to arterial stiffness and blood pressure in 6 to 8-year-old boys stratified by maternal risk. Free Radic Res 2018; 52:180-187. [PMID: 29350093 DOI: 10.1080/10715762.2017.1421314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Early cardiovascular disease (CVD) onset can be inflicted by familial cardiovascular and lifestyle risk factors. We aimed to compare phenotypic characteristics and explore associations between oxidative stress and vascular function in boys stratified by maternal cardiovascular and lifestyle risk. We included 40 Black and 41 White boys (ages 6-8 years), along with the biological mother of each child. The study population was divided into two groups (nonmaternal risk vs. maternal risk) according to maternal risk predetermined by their selfreported cardiovascular and lifestyle risk factors. Pulse wave velocity (PWV) was measured at various sites and blood pressures were recorded. Urine samples were collected for analyses of thiobarbituric acid-reactive substances (TBARS), 8-hydroxy-2-deoxy guanosine (8-OHdG), albumin, and creatinine. Higher levels of urinary albumin to creatinine ratio (uACR) were found in the maternal risk group compared to the nonmaternal risk group (p = .038). Multiple regression analysis in the maternal risk group revealed diastolic blood pressure (R2 = 0.159; β = 0.293; p = .050), carotid femoral PWV (R2 = 0.158; β = 0.297; p = .038) and carotid dorsalis pedis PWV (adj R2 = 0.322; β = 0.505; p < .001) to be positively associated with TBARS, while an inverse association of uACR (R2 = 0.161; β = -0.261; p = .046) with TBARS was observed. Also, in the maternal risk group, independent associations of DBP (R2 = 0.273; β = 0.289; p = .040) and uACR (R2 = 0.283; β = 0.268; p = .027) with 8-OHdG were indicated. In boys, as young as 6 years of age, oxidative stress related to arterial stiffness and diastolic blood pressure was observed. This association was only evident in boys with linked maternal lifestyle and cardiovascular risk factors, suggesting potential family-related early onset of cardiovascular risk.
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Affiliation(s)
- Ashleigh Craig
- a Hypertension in Africa Research Team (HART), North-West University, Potchefstroom Campus , Potchefstroom , South Africa
| | - Catharina M C Mels
- a Hypertension in Africa Research Team (HART), North-West University, Potchefstroom Campus , Potchefstroom , South Africa.,b MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University , Potchefstroom , South Africa
| | - Ruan Kruger
- a Hypertension in Africa Research Team (HART), North-West University, Potchefstroom Campus , Potchefstroom , South Africa.,b MRC Research Unit for Hypertension and Cardiovascular Disease, North-West University , Potchefstroom , South Africa
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Caverzan A, Bonifacio A, Carvalho FEL, Andrade CMB, Passaia G, Schünemann M, Maraschin FDS, Martins MO, Teixeira FK, Rauber R, Margis R, Silveira JAG, Margis-Pinheiro M. The knockdown of chloroplastic ascorbate peroxidases reveals its regulatory role in the photosynthesis and protection under photo-oxidative stress in rice. Plant Sci 2014; 214:74-87. [PMID: 24268165 DOI: 10.1016/j.plantsci.2013.10.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/12/2013] [Accepted: 10/01/2013] [Indexed: 05/26/2023]
Abstract
The inactivation of the chloroplast ascorbate peroxidases (chlAPXs) has been thought to limit the efficiency of the water-water cycle and photo-oxidative protection under stress conditions. In this study, we have generated double knockdown rice (Oryza sativa L.) plants in both OsAPX7 (sAPX) and OsAPX8 (tAPX) genes, which encode chloroplastic APXs (chlAPXs). By employing an integrated approach involving gene expression, proteomics, biochemical and physiological analyses of photosynthesis, we have assessed the role of chlAPXs in the regulation of the protection of the photosystem II (PSII) activity and CO2 assimilation in rice plants exposed to high light (HL) and methyl violagen (MV). The chlAPX knockdown plants were affected more severely than the non-transformed (NT) plants in the activity and structure of PSII and CO2 assimilation in the presence of MV. Although MV induced significant increases in pigment content in the knockdown plants, the increases were apparently not sufficient for protection. Treatment with HL also caused generalized damage in PSII in both types of plants. The knockdown and NT plants exhibited differences in photosynthetic parameters related to efficiency of utilization of light and CO2. The knockdown plants overexpressed other antioxidant enzymes in response to the stresses and increased the GPX activity in the chloroplast-enriched fraction. Our data suggest that a partial deficiency of chlAPX expression modulate the PSII activity and integrity, reflecting the overall photosynthesis when rice plants are subjected to acute oxidative stress. However, under normal growth conditions, the knockdown plants exhibit normal phenotype, biochemical and physiological performance.
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Affiliation(s)
- Andréia Caverzan
- Department of Genetics, Federal University of Rio Grande do Sul, Brazil; Biotechnology Center, Federal University of Rio Grande do Sul, Brazil
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Sales CRG, Ribeiro RV, Silveira JAG, Machado EC, Martins MO, Lagôa AMMA. Superoxide dismutase and ascorbate peroxidase improve the recovery of photosynthesis in sugarcane plants subjected to water deficit and low substrate temperature. Plant Physiol Biochem 2013; 73:326-36. [PMID: 24184453 DOI: 10.1016/j.plaphy.2013.10.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 10/10/2013] [Indexed: 05/18/2023]
Abstract
The physiological responses of C4 species to simultaneous water deficit and low substrate temperature are poorly understood, as well as the recovery capacity. This study investigated whether the effect of these abiotic stressors is cultivar-dependent. The differential responses of drought-resistant (IACSP94-2094) and drought-sensitive (IACSP97-7065) sugarcane cultivars were characterized to assess the relationship between photosynthesis and antioxidant protection by APX and SOD isoforms under stress conditions. Our results show that drought alone or combined with low root temperature led to excessive energetic pressure at the PSII level. Heat dissipation was increased in both genotypes, but the high antioxidant capacity due to higher SOD and APX activities was genotype-dependent and it operated better in the drought-resistant genotype. High SOD and APX activities were associated with a rapid recovery of photosynthesis in IACSP94-2094 plants after drought and low substrate temperature alone or simultaneously.
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Affiliation(s)
- Cristina R G Sales
- Laboratório de Fisiologia Vegetal "Coaracy M. Franco", Instituto Agronômico, CP 28, CEP 13012-970 Campinas, SP, Brazil
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D’Amico E, Factor-Litvak P, Santella RM, Mitsumoto H. Clinical perspective on oxidative stress in sporadic amyotrophic lateral sclerosis. Free Radic Biol Med 2013; 65:509-527. [PMID: 23797033 PMCID: PMC3859834 DOI: 10.1016/j.freeradbiomed.2013.06.029] [Citation(s) in RCA: 216] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 06/14/2013] [Accepted: 06/14/2013] [Indexed: 12/12/2022]
Abstract
Sporadic amyotrophic lateral sclerosis (ALS) is one of the most devastating neurological diseases; most patients die within 3 to 4 years after symptom onset. Oxidative stress is a disturbance in the pro-oxidative/antioxidative balance favoring the pro-oxidative state. Autopsy and laboratory studies in ALS indicate that oxidative stress plays a major role in motor neuron degeneration and astrocyte dysfunction. Oxidative stress biomarkers in cerebrospinal fluid, plasma, and urine are elevated, suggesting that abnormal oxidative stress is generated outside of the central nervous system. Our review indicates that agricultural chemicals, heavy metals, military service, professional sports, excessive physical exertion, chronic head trauma, and certain foods might be modestly associated with ALS risk, with a stronger association between risk and smoking. At the cellular level, these factors are all involved in generating oxidative stress. Experimental studies indicate that a combination of insults that induce modest oxidative stress can exert additive deleterious effects on motor neurons, suggesting that multiple exposures in real-world environments are important. As the disease progresses, nutritional deficiency, cachexia, psychological stress, and impending respiratory failure may further increase oxidative stress. Moreover, accumulating evidence suggests that ALS is possibly a systemic disease. Laboratory, pathologic, and epidemiologic evidence clearly supports the hypothesis that oxidative stress is central in the pathogenic process, particularly in genetically susceptive individuals. If we are to improve ALS treatment, well-designed biochemical and genetic epidemiological studies, combined with a multidisciplinary research approach, are needed and will provide knowledge crucial to our understanding of ALS etiology, pathophysiology, and prognosis.
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Affiliation(s)
- Emanuele D’Amico
- Eleanor and Lou Gehrig MDA/ALS Research Center, The Neurological Institute of New York, Columbia University Medical Center, 710 West 168th Street (NI-9), New York, NY 10032, ;
| | - Pam Factor-Litvak
- Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032,
| | - Regina M. Santella
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, 722 West 168th Street, New York, NY 10032,
| | - Hiroshi Mitsumoto
- Eleanor and Lou Gehrig MDA/ALS Research Center, The Neurological Institute of New York, Columbia University Medical Center, 710 West 168th Street (NI-9), New York, NY 10032
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Ceron CS, Rizzi E, Guimarães DA, Martins-Oliveira A, Gerlach RF, Tanus-Santos JE. Nebivolol attenuates prooxidant and profibrotic mechanisms involving TGF-β and MMPs, and decreases vascular remodeling in renovascular hypertension. Free Radic Biol Med 2013; 65:47-56. [PMID: 23806385 DOI: 10.1016/j.freeradbiomed.2013.06.033] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 05/31/2013] [Accepted: 06/17/2013] [Indexed: 01/13/2023]
Abstract
Nebivolol and metoprolol are β1-adrenergic receptor blockers with different properties. We hypothesized that nebivolol, but not metoprolol, could attenuate prooxidant and profibrotic mechanisms of hypertension and therefore protect against the vascular remodeling associated with hypertension. Hypertension was induced in male Wistar rats by clipping the left renal artery. Six weeks after surgery, hypertensive and sham rats were treated with nebivolol (10 mg kg(-1) day(-1)) or metoprolol (20 mg kg(-1) day(-1)) for 4 weeks. Systolic blood pressure was monitored weekly. Morphologic changes in the aortic wall were studied in hematoxylin/eosin and picrosirius red sections. Aortic NAD(P)H activity and superoxide production were evaluated by luminescence and dihydroethidium, respectively, and TBARS levels were measured in plasma. Aortic nitrotyrosine staining was evaluated to assess peroxynitrite formation. TGF-β levels and p-ERK 1/2 expression were determined by immunofluorescence and Western blotting, respectively. Matrix metalloproteinase (MMP) activity and expression were determined by in situ zymography, gel zymography, Western blotting, and immunofluorescence, and TIMP-1 was assessed by immunohistochemistry. Both β1-receptor antagonists exerted very similar antihypertensive effects. However, while metoprolol had no significant effects, nebivolol significantly attenuated vascular remodeling and collagen deposition associated with hypertension. Moreover, nebivolol, but not metoprolol, attenuated hypertension-induced increases in aortic NAD(P)H oxidase activity, superoxide production, TBARS concentrations, nitrotyrosine levels, TGF-β upregulation, and MMP-2 and -9 expression/activity. No effects on p-ERK 1/2 and TIMP-1 expression were found. These results show for the first time that nebivolol, but not metoprolol, attenuates prooxidant and profibrotic mechanisms involving TGF-β and MMP-2 and MMP-9, which promote vascular remodeling in hypertension.
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Affiliation(s)
- Carla S Ceron
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Elen Rizzi
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Danielle A Guimarães
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Alisson Martins-Oliveira
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Raquel F Gerlach
- Department of Morphology, Estomatology, and Physiology, Dental School of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, Brazil, 14049-900
| | - Jose E Tanus-Santos
- Department of Pharmacology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes, 3900, 14049-900 Ribeirao Preto, SP, Brazil.
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Barros MP, Hollnagel HC, Glavina AB, Soares CO, Ganini D, Dagenais-Bellefeuille S, Morse D, Colepicolo P. Molybdate:sulfate ratio affects redox metabolism and viability of the dinoflagellate Lingulodinium polyedrum. Aquat Toxicol 2013; 142-143:195-202. [PMID: 24036534 DOI: 10.1016/j.aquatox.2013.08.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 06/02/2023]
Abstract
Molybdenum is a transition metal used primarily (90% or more) as an additive to steel and corrosion-resistant alloys in metallurgical industries and its release into the environment is a growing problem. As a catalytic center of some redox enzymes, molybdenum is an essential element for inorganic nitrogen assimilation/fixation, phytohormone synthesis, and free radical metabolism in photosynthesizing species. In oceanic and estuarine waters, microalgae absorb molybdenum as the water-soluble molybdate anion (MoO4(2-)), although MoO4(2-) uptake is thought to compete with uptake of the much more abundant sulfate anion (SO4(2-), approximately 25 mM in seawater). Thus, those aspects of microalgal biology impacted by molybdenum would be better explained by considering both MoO4(2-) and SO4(2-) concentrations in the aquatic milieu. This work examines toxicological, physiological and redox imbalances in the dinoflagellate Lingulodinium polyedrum that have been induced by changes in the molybdate:sulfate ratios. We prepared cultures of Lingulodinium polyedrum grown in artificial seawater containing eight different MoO4(2-) concentrations (from 0 to 200 μM) and three different SO4(2-) concentrations (3.5 mM, 9.6 mM and 25 mM). We measured sulfur content in cells, the activities of the three major antioxidant enzymes (superoxide dismutase, catalase, and ascorbate peroxidase), indexes of oxidative modifications in proteins (carbonyl content) and lipids (thiobarbituric acid-reactive substances, TBARS), the activities of the molybdenum-dependent enzymes xanthine oxidase and nitrate reductase, expression of key protein components of dinoflagellate photosynthesis (peridinin-chlorophyll a protein and ribulose-1,5-biphosphate carboxylase/oxidase) and growth curves. We find evidence for Mo toxicity at relatively high [MoO4(2-)]:[SO4(2-)] ratios. We also find evidence for extensive redox adaptations at Mo levels well below lethal levels.
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Affiliation(s)
- M P Barros
- Postgraduate Program in Health Science (Environmental Chemistry), CBS, Universidade Cruzeiro do Sul, 08060070 São Paulo, SP, Brazil.
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12
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Wang X, Wu D, Yang L, Gan L, Cederbaum AI. Cytochrome P450 2E1 potentiates ethanol induction of hypoxia and HIF-1α in vivo. Free Radic Biol Med 2013; 63:175-86. [PMID: 23669278 PMCID: PMC3729858 DOI: 10.1016/j.freeradbiomed.2013.05.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/03/2013] [Accepted: 05/03/2013] [Indexed: 12/20/2022]
Abstract
Ethanol induces hypoxia and elevates HIF-1α in the liver. CYP2E1 plays a role in the mechanisms by which ethanol generates oxidative stress, fatty liver, and liver injury. This study evaluated whether CYP2E1 contributes to ethanol-induced hypoxia and activation of HIF-1α in vivo and whether HIF-1α protects against or promotes CYP2E1-dependent toxicity in vitro. Wild-type (WT), CYP2E1-knock-in (KI), and CYP2E1 knockout (KO) mice were fed ethanol chronically; pair-fed controls received isocaloric dextrose. Ethanol produced liver injury in the KI mice to a much greater extent than in the WT and KO mice. Protein levels of HIF-1α and downstream targets of HIF-1α activation were elevated in the ethanol-fed KI mice compared to the WT and KO mice. Levels of HIF prolyl hydroxylase 2, which promotes HIF-1α degradation, were decreased in the ethanol-fed KI mice in association with the increases in HIF-1α. Hypoxia occurred in the ethanol-fed CYP2E1 KI mice as shown by an increased area of staining using the hypoxia-specific marker pimonidazole. Hypoxia was lower in the ethanol-fed WT mice and lowest in the ethanol-fed KO mice and all the dextrose-fed mice. In situ double staining showed that pimonidazole and CYP2E1 were colocalized to the same area of injury in the hepatic centrilobule. Increased protein levels of HIF-1α were also found after acute ethanol treatment of KI mice. Treatment of HepG2 E47 cells, which express CYP2E1, with ethanol plus arachidonic acid (AA) or ethanol plus buthionine sulfoximine (BSO), which depletes glutathione, caused loss of cell viability to a greater extent than in HepG2 C34 cells, which do not express CYP2E1. These treatments elevated protein levels of HIF-1α to a greater extent in E47 cells than in C34 cells. 2-Methoxyestradiol, an inhibitor of HIF-1α, blunted the toxic effects of ethanol plus AA and ethanol plus BSO in the E47 cells in association with inhibition of HIF-1α. The HIF-1α inhibitor also blocked the elevated oxidative stress produced by ethanol/AA or ethanol/BSO in the E47 cells. These results suggest that CYP2E1 plays a role in ethanol-induced hypoxia, oxidative stress, and activation of HIF-1α and that HIF-1α contributes to CYP2E1-dependent ethanol-induced toxicity. Blocking HIF-1α activation and actions may have therapeutic implications for protection against ethanol/CYP2E1-induced oxidative stress, steatosis, and liver injury.
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Affiliation(s)
- Xiaodong Wang
- Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Defeng Wu
- Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Lili Yang
- Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
| | - Lixia Gan
- Department of Biochemistry and Molecular Biology, The Third Military Medical University, Chongqing, 400038, China
- Co-corresponding author,
| | - Arthur I Cederbaum
- Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
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13
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Bernasinska J, Duchnowicz P, Koter-Michalak M, Koceva-Chyla A. Effect of safeners on damage of human erythrocytes treated with chloroacetamide herbicides. Environ Toxicol Pharmacol 2013; 36:368-377. [PMID: 23732483 DOI: 10.1016/j.etap.2013.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/28/2013] [Accepted: 04/21/2013] [Indexed: 05/18/2023]
Abstract
Chloroacetamides are used as pre-emergent substances for growth control of annual grasses and weeds. Since they can be harmful for crop plants, protective compounds (safeners) are used along with herbicides. So far, their effects on human blood cells have not been evaluated, and this study is the very first one devoted to this subject. We examined the harmful effects of chloroacetamides, their metabolites and safeners, used alone or in combination with herbicides, on human erythrocytes measuring the extent of hemolysis, lipid peroxidation and catalase activity. Higher impact of herbicides than their metabolites on all of the investigated parameters was found. Safeners alone did not produce any damage to erythrocytes and did not elicit any changes in oxidative stress parameters. Combination of safener with herbicide did not attenuate hemolysis of erythrocytes compared to the herbicide alone. Safeners reduced lipid peroxidation induced by herbicides, which suggest the role of safeners as antioxidants.
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Affiliation(s)
- Joanna Bernasinska
- Department of Thermobiology, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska St., 90-237 Lodz, Poland.
| | - Piotr Duchnowicz
- Department of Environmental Pollution Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska St., 90-237 Lodz, Poland
| | - Maria Koter-Michalak
- Department of Environmental Pollution Biophysics, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska St., 90-237 Lodz, Poland
| | - Aneta Koceva-Chyla
- Department of Thermobiology, Institute of Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska St., 90-237 Lodz, Poland
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14
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Kaya Y, Sarikcioglu L, Yildirim FB, Aslan M, Demir N. Does circadian rhythm disruption induced by light-at-night has beneficial effect of melatonin on sciatic nerve injury? J Chem Neuroanat 2013; 53:18-24. [PMID: 23969081 DOI: 10.1016/j.jchemneu.2013.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/29/2013] [Accepted: 08/09/2013] [Indexed: 12/21/2022]
Abstract
Melatonin stimulates peripheral nerve regeneration. However, the precise effect of Melatonin on nerve repair in dark period have not been clarified. The aim of the present study was to investigate the effect of melatonin on sciatic nerve injury after melatonin was given to rats in the morning or evening by means of combined analysis. This is the first study to investigate the influence of melatonin on sciatic nerve in cut injury two different times of the day. 60 adult female Wistar rats were divided into 4 groups: control (Group 1), sham-operated (Group 2), sciatic nerve cut+melatonin treatment in light (Group 3), sciatic nerve cut+melatonin treatment in dark (Group 4). Melatonin was administered intraperitoneally at dose of 50 mg/kg/day for six weeks. Recovery of function was analyzed by structural (biochemical properties of the antioxidant levels and ultrastructural analysis) and functional analyses (Sciatic function index, pinch test). The data demonstrated beneficial effect of melatonin in light period. However significant beneficial effect of melatonin was detected on the recovery of the cut sciatic nerve in dark period. Melatonin treatment was unable to influence on the recovery of the cut sciatic nerve in dark period. This means that the effect of melatonin the recovery of the cut injured sciatic nerve depends on the time of treatment may be attributed to its circadian rhythm.
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Affiliation(s)
- Yasemin Kaya
- Department of Anatomy, Akdeniz University Faculty of Medicine, 07070 Antalya, Turkey.
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15
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Jung KJ, Jang HS, Kim JI, Han SJ, Park JW, Park KM. Involvement of hydrogen sulfide and homocysteine transsulfuration pathway in the progression of kidney fibrosis after ureteral obstruction. Biochim Biophys Acta Mol Basis Dis 2013; 1832:1989-97. [PMID: 23846016 DOI: 10.1016/j.bbadis.2013.06.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 05/22/2013] [Accepted: 06/26/2013] [Indexed: 12/16/2022]
Abstract
Hydrogen sulfide (H2S) produced by cystathionine β-synthase (CBS) and cystathionine γ-lyase (CSE) in the transsulfuration pathway of homocysteine plays a number of pathophysiological roles. Hyperhomocysteinemia is involved in kidney fibrosis. However, the role of H2S in kidney fibrosis remains to be defined. Here, we investigated the role of H2S and its acting mechanism in unilateral ureteral obstruction (UO)-induced kidney fibrosis in mice. UO decreased expressions of CBS and CSE in the kidney with decrease of H2S concentration. Treatment with sodium hydrogen sulfide (NaHS, a H2S producer) during UO reduced UO-induced oxidative stress with preservations of catalase, copper-zinc superoxide dismutase (CuZnSOD), and manganese superoxide dismutase (MnSOD) expression, and glutathione level. In addition, NaHS mitigated decreases of CBS and CSE expressions, and H2S concentration in the kidney. NaHS treatment attenuated UO-induced increases in levels of TGF-β1, activated Smad3, and activated NF-κB. This study provided the first evidence of involvement of the transsulfuration pathway and H2S in UO-induced kidney fibrosis, suggesting that H2S and its transsulfuration pathway may be a potential target for development of therapeutics for fibrosis-related diseases.
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Affiliation(s)
- Kyong-Jin Jung
- Department of Anatomy, Kyungpook National University School of Medicine, Daegu 700-422, Republic of Korea
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16
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Fujii Y, Segawa R, Kimura M, Wang L, Ishii Y, Yamamoto R, Morita R, Mitsumori K, Shibutani M. Inhibitory effect of α-lipoic acid on thioacetamide-induced tumor promotion through suppression of inflammatory cell responses in a two-stage hepatocarcinogenesis model in rats. Chem Biol Interact 2013; 205:108-18. [PMID: 23830814 DOI: 10.1016/j.cbi.2013.06.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/31/2013] [Accepted: 06/17/2013] [Indexed: 11/25/2022]
Abstract
To investigate the protective effect of α-lipoic acid (a-LA) on the hepatocarcinogenic process promoted by thioacetamide (TAA), we used a two-stage liver carcinogenesis model in N-diethylnitrosamine (DEN)-initiated and TAA-promoted rats. We examined the modifying effect of co-administered a-LA on the liver tissue environment surrounding preneoplastic hepatocellular lesions, with particular focus on hepatic macrophages and the mechanism behind the decrease in apoptosis of cells surrounding preneoplastic hepatocellular lesions during the early stages of hepatocellular tumor promotion. TAA increased the number and area of glutathione S-transferase placental form (GST-P)(+) liver cell foci and the numbers of proliferating and apoptotic cells in the liver. Co-administration with a-LA suppressed these effects. TAA also increased the numbers of ED2(+), cyclooxygenase-2(+), and heme oxygenase-1(+) hepatic macrophages as well as the number of CD3(+) lymphocytes. These effects were also suppressed by a-LA. Transcript levels of some inflammation-related genes were upregulated by TAA and downregulated by a-LA in real-time RT-PCR analysis. Outside the GST-P(+) foci, a-LA reduced the numbers of apoptotic cells, active caspase-8(+) cells and death receptor (DR)-5(+) cells. These results suggest that hepatic macrophages producing proinflammatory factors may be activated in TAA-induced tumor promotion. a-LA may suppress tumor-promoting activity by suppressing the activation of these macrophages and the subsequent inflammatory responses. Furthermore, a-LA may suppress tumor-promoting activity by suppressing the DR5-mediated extrinsic pathway of apoptosis and the subsequent regeneration of liver cells outside GST-P(+) foci.
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Key Words
- 8-OHdG
- 8-hydroxydeoxyguanosine
- Aldh1a1
- Apoptosis
- B-cell CLL/lymphoma 2
- BNF
- Bax
- Bcl2
- Bcl2-associated X protein
- Bcl2-like 1
- Bcl2l1
- CMD
- Casp
- Cd4
- Cd4 molecule
- Cd8a
- Cd8a molecule
- Col1a1
- Cox-2
- Cu
- Cx3cl1
- Cxcl10
- DAB
- DEN
- DR5
- Death receptor 5 (DR5)
- EMIQ
- Fadd
- Fas (TNFRSF6)-associated via death domain
- Fe
- GST-P
- Gpx2
- Gstm1
- HO-1
- Hprt
- Il1b
- Il4
- Inflammation
- Liver tumor promotion
- Mapk
- Mmp
- N-diethylnitrosamine
- NAD(P)H dehydrogenase, quinone 1
- Nfe2l2
- Nqo1
- PBS
- PCNA
- Ptgs2
- ROS
- Serpine1
- TAA
- TBARS
- TRAIL
- TUNEL
- Tgfb2
- Thioacetamide (TAA)
- Tnf
- Tnfrsf10b
- Tnfsf10
- Txn1
- a-LA
- aldehyde dehydrogenase family 1 member A1
- caspase
- chemokine (C-X-C motif) ligand 10
- chemokine (C-X3-C motif) ligand 1
- choline-methionine-deficient diet
- collagen, type I, alpha 1
- copper
- cyclooxygenase 2
- death receptor 5
- diaminobenzidine
- enzymatically modified isoquercitrin
- glutathione S-transferase mu 1
- glutathione S-transferase placental form
- glutathione peroxidase 2
- heme oxygenase-1
- hypoxanthine guanine phosphoribosyl transferase
- interleukin 1 beta
- interleukin 4
- iron
- matrix metalloproteinase
- mitogen activated protein kinase
- nuclear factor, erythroid derived 2, like 2
- phosphate buffered solution
- proliferating cell nuclear antigen
- prostaglandin-endoperoxide synthase 2
- reactive oxygen species
- serine (or cysteine) peptidase inhibitor, clade E, member 1
- terminal deoxynucleotidyl transferase-mediated nick end labeling
- thioacetamide
- thiobarbituric acid-reactive substances
- thioredoxin 1
- transforming growth factor, beta 2
- tumor necrosis factor
- tumor necrosis factor (ligand) superfamily, member 10
- tumor necrosis factor receptor superfamily, member 10b
- tumor necrosis factor-related apoptosis-inducing ligand
- α-Lipoic acid (a-LA)
- α-lipoic acid
- β-naphthoflavone
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Affiliation(s)
- Yuta Fujii
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan
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17
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Costa P, Gonçalves S, Valentão P, Andrade PB, Almeida C, Nogueira JMF, Romano A. Metabolic profile and biological activities of Lavandula pedunculata subsp. lusitanica (Chaytor) Franco: studies on the essential oil and polar extracts. Food Chem 2013; 141:2501-6. [PMID: 23870987 DOI: 10.1016/j.foodchem.2013.05.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 04/08/2013] [Accepted: 05/09/2013] [Indexed: 11/15/2022]
Abstract
We investigated the metabolic profile and biological activities of the essential oil and polar extracts of Lavandula pedunculata subsp. lusitanica (Chaytor) Franco collected in south Portugal. Gas chromatography-mass spectrometry (GC-MS) analysis revealed that oxygen-containing monoterpenes was the principal group of compounds identified in the essential oil. Camphor (40.6%) and fenchone (38.0%) were found as the major constituents. High-performance liquid chromatography with diode array detection (HPLC-DAD) analysis allowed the identification of hydroxycinnamic acids (3-O-caffeoylquinic, 4-O-caffeoylquinic, 5-O-caffeoylquinic and rosmarinic acids) and flavones (luteolin and apigenin) in the polar extracts, with rosmarinic acid being the main compound in most of them. The bioactive compounds from L. pedunculata polar extracts were the most efficient free-radical scavengers, Fe(2+) chelators and inhibitors of malondialdehyde production, while the essential oil was the most active against acetylcholinesterase. Our results reveal that the subspecies of L. pedunculata studied is a potential source of active metabolites with a positive effect on human health.
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Affiliation(s)
- Patrícia Costa
- IBB-CGB, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
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18
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Karapetsa M, Pitsika M, Goutzourelas N, Stagos D, Tousia Becker A, Zakynthinos E. Oxidative status in ICU patients with septic shock. Food Chem Toxicol 2013; 61:106-11. [PMID: 23542126 DOI: 10.1016/j.fct.2013.03.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/12/2013] [Accepted: 03/19/2013] [Indexed: 02/07/2023]
Abstract
The aim of this pilot study was to investigate variability of oxidative stress during sepsis evolution. ICU patients with the diagnosis of septic shock were included. Thiobarbituric-acid reactive substances, total antioxidant capacity, protein carbonyls in plasma, reduced, oxidized glutathione and catalase activity in erythrocyte lysate were assessed in the 1st, 3rd, 5th and 8th day after sepsis appearance. A total of 17 patients were divided in two groups: survivors (n=7) and non-survivors (n=10). APACHE II was 11.5 ± 5.4 and 19.9 ± 4.97 in survivors and non-survivors respectively (p=0.005), while mean age and SOFA score at sepsis diagnosis, were similar between the two groups. GSH levels, catalase activity and protein carbonyls presented significant different course in time between survivors and non-survivors (p<0.05). Catalase activity was significantly higher in survivors (238.8 ± 51.5) than non-survivors (166.4 ± 40.2; p=0.005), while protein carbonyls levels were significantly lower in survivors (0.32 ± 0.09) than non-survivors (0.48 ± 0.16; p=0.036) on the 1st day. Yet, non-survivors exhibited a declining course in GSH levels during time, while GSH levels were maintained in survivors. Conclusively, a longstanding antioxidant deficiency in non-surviving patients was noted. This phenomenon was clearly prominent in patients' erythrocytes.
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Affiliation(s)
- Maria Karapetsa
- Intensive Care Department, University Hospital of Thessaly Biopolis, Larissa 41110, Greece.
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Alhamdan AA, Alsaif AA. The nutritional, glutathione and oxidant status of elderly subjects admitted to a university hospital. Saudi J Gastroenterol 2011; 17:58-63. [PMID: 21196655 PMCID: PMC3099083 DOI: 10.4103/1319-3767.74474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 04/09/2010] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND/AIM Malnutrition in elderly patients is common in hospitals, and many of the age associated chronic diseases have a common factor, which is oxidative stress. The aim of the study was to evaluate the nutritional status, glutathione, and oxidant status of elderly patients. PATIENTS AND METHODS The mini-nutritional assessment (MNA) was used to determine the nutritional status of elderly patients. Glutathione concentration in the whole blood, plasma albumin, and thiobarbituric acid-reactive substances (TBARS) levels was measured spectrophotometrically by the enzymatic recycling method. In addition, length of hospital stay was estimated. All measurements were taken within 48 h after admission. RESULTS The results showed that more than two-thirds of the elderly were classified as at risk of malnutrition and malnourished. About 45% and 53% elevation in the TBARS was found in at risk of being malnourished and in the malnourished groups, respectively, compared to the well-nourished group, but the elevation did not reach the significant level. No significant differences in the glutathione concentration and in the length of hospital stay were found among the three mini-nutritional assessment categories. CONCLUSIONS The study indicated the necessity of performing the MNA test for elderly upon admission to hospitals, and more attention needs to be paid to this vulnerable group of people.
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Affiliation(s)
- Adel A Alhamdan
- Clinical Nutrition Program, Community Health Sciences Department, College of Applied Medical Sciences, King Saud University, Saudi Arabia.
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