scholarly journals Total Antioxidant Capacity and Frailty in Older Men

2020 ◽  
Vol 14 (5) ◽  
pp. 155798832094659
Author(s):  
Monica C. Tembo ◽  
Kara L. Holloway-Kew ◽  
Chiara C. Bortolasci ◽  
Sophia X Sui ◽  
Sharon L. Brennan-Olsen ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Sensitivity Analysis ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Positive Association ◽  
Older Men ◽  
Clinical Syndrome ◽  
Colorimetric Determination ◽  
Cross Sectional ◽  
Total Antioxidant

Frailty, a clinical syndrome characterized by multisystem dysregulation, has been associated with high levels of oxidative stress. We investigated the association between serum total antioxidant capacity (TAC) and frailty in older men. This cross-sectional study included 581 men (age 60–90 years) enrolled in the Geelong Osteoporosis Study. Frailty comprised at least three of unintentional weight loss, exhaustion, low physical activity, slowness, and weakness. Serum TAC was measured by quantitative colorimetric determination and expressed as uric acid equivalents (mM). Relationships between TAC (in SD units) and frailty were explored using multivariable logistic regression models. Sociodemographic, anthropometric, and lifestyle variables were tested as potential confounders and effect modifiers. A sensitivity analysis excluded participants ( n = 145) in the upper quartile of TAC, who were likely to have hyperuricemia. Fifty (8.6%) men were frail. There was evidence that higher TAC levels were associated with increased likelihood of frailty ( OR 1.34, 95% confidence interval [CI; 0.99, 1.80]), and this was attenuated after adjustment for age and body mass index (BMI; OR 1.26, 95% CI [0.93,1.71]). No effect modifiers or other confounders were identified. The sensitivity analysis revealed a positive association between TAC and frailty, before and after accounting for age and BMI (adjusted OR 1.79, 95% CI [1.01, 3.17] p = .038). These results suggest a positive association between TAC levels and frailty, supporting the hypothesis that this biomarker could be useful in identifying individuals at risk of frailty. We speculate that a milieu of heightened oxidative stress in frailty may elevate the oxidative stress regulatory set point, raising antioxidant activity. This warrants further investigation.

scholarly journals COMPARISON OF TOTAL ANTIOXIDANT CAPACITY (TAC)’S PATIENTS OF CHRONIC KIDNEY DISEASE UNDERGOING HEMODIALYSIS AND NON-HEMODIALYSIS

2020 ◽  
Vol 30 (2) ◽  
pp. 59
Author(s):  
Zaky Firmawan El-Hakim ◽  
Mochammad Thaha ◽  
Yetti Hernaningsih
Keyword(s):  
Oxidative Stress ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Colorimetric Method ◽  
Health Condition ◽  
Study Data ◽  
Cross Sectional ◽  
Total Antioxidant

Background: Total antioxidant capacity (TAC) is one of the biomarkers to determine a person's health condition through antioxidant and oxidant activity or oxidative stress so that it can help in determining the therapy needed. However, currently, TAC levels in patients with chronic kidney disease (CKD) undergoing hemodialysis (HD) and non-hemodialysis (non-HD) are still controversial, so further research is needed. Objective: To analyze the comparison of TAC in HD and non-HD CKD patient. Material and Method: This was an analytical cross-sectional study with clinical observation in CKD patient. A total of 71 CKD patients consisting of 28 CKD HD patients and 43 non-HD CKD patients were enrolled in this study. Data about the characteristics of the subjects were taken using the anamnesis method, while data about TAC were taken using the colorimetric method with COBAS C-501 0837-19 series and 0835-13 series to measure TAC levels in the serum of CKD patients. The data that has been obtained were analyzed using independent sample t-tests. Result: TAC levels were significantly higher in CKD patients undergoing HD compared to non-HD CKD patients (p <0.05). There are data on albumin as an antioxidant and MDA as an oxidative stress biomarker that affects TAC levels. Conclusion: TAC levels found to be higher in hemodialysis CKD patient compared to non-hemodialysis CKD patient.

scholarly journals COMPARISON OF TOTAL ANTIOXIDANT CAPACITY (TAC)’S PATIENTS OF CHRONIC KIDNEY DISEASE UNDERGOING HEMODIALYSIS AND NON-HEMODIALYSIS

2020 ◽  
Vol 30 (2) ◽  
pp. 52
Author(s):  
Zaky Firmawan El-Hakim ◽  
Mochammad Thaha ◽  
Yetti Hernaningsih
Keyword(s):  
Oxidative Stress ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Colorimetric Method ◽  
Health Condition ◽  
Study Data ◽  
Cross Sectional ◽  
Total Antioxidant

Background: Total antioxidant capacity (TAC) is one of the biomarkers to determine a person's health condition through antioxidant and oxidant activity or oxidative stress so that it can help in determining the therapy needed. However, currently, TAC levels in patients with chronic kidney disease (CKD) undergoing hemodialysis (HD) and non-hemodialysis (non-HD) are still controversial, so further research is needed. Objective: To analyze the comparison of TAC in HD and non-HD CKD patient. Materials and Methods: This was an analytical cross-sectional study with clinical observation in CKD patient. A total of 71 CKD patients consisting of 28 CKD HD patients and 43 non-HD CKD patients were enrolled in this study. Data about the characteristics of the subjects were taken using the anamnesis method, while data about TAC were taken using the colorimetric method with COBAS C-501 0837-19 series and 0835-13 series to measure TAC levels in the serum of CKD patients. The data that has been obtained were analyzed using independent sample t-tests. Results: TAC levels were significantly higher in CKD patients undergoing HD compared to non-HD CKD patients (p <0.05). There are data on albumin as an antioxidant and MDA as an oxidative stress biomarker that affects TAC levels. Conclusion: TAC levels found to be higher in hemodialysis CKD patient compared to non-hemodialysis CKD patient.

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Male Smokers

2019 ◽  
Vol 22 (7) ◽  
pp. 496-501
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Parisa Falsafi ◽  
Hamidreza Abolsamadi ◽  
Mohammad T. Goodarzi ◽  
Jalal Poorolajal
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Cigarette Smoke ◽  
Total Antioxidant Capacity ◽  
The Body ◽  
Total Antioxidant ◽  
The Mean ◽  
And Oxidative Stress

Background: Cigarette smoke free radicals can cause cellular damage and different diseases. All the body fluids have antioxidants which protect against free radicals. Objective: The aim of this study was to evaluate salivary total antioxidant capacity and peroxidase, uric acid and malondialdehyde levels in smokers and a nonsmoking control group. Methods: Unstimulated saliva was collected from 510 males. A total of 259 subjects were current smokers and 251 were non-smokers. The levels of salivary total antioxidant capacity, uric acid, peroxidase and malondialdehyde were measured using standard procedures. Data were analyzed with t test and ANOVA. Results: The smokers were younger and dental hygiene index was higher than healthy nonsmoking controls. The mean total antioxidant capacity in smokers and nonsmokers was 0.13±0.07 and 0.21±011, respectively (P=0.001). Smokers had significantly lower peroxidase and uric acid levels than healthy controls. In addition, the mean malondialdehyde levels in the smokers and nonsmokers were 4.55 ±2.61 and 2.79 ±2.21, respectively (P=0.001). Conclusion: Cigarette smoke produces free radical and oxidative stress, causing many side effects. Salivary antioxidant levels decreased and malondialdehyde levels increased in smokers, indicating the high oxidative stress among smokers compared to nonsmokers. Cigarette smoke had deleterious effects on main salivary antioxidants levels.

scholarly journals Total Antioxidant Capacity in HBV Carriers, a Promising Biomarker for Evaluating Hepatic Fibrosis: A Pilot Study

Antioxidants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 77
Author(s):  
Jing-Hua Wang ◽  
Sung-Bae Lee ◽  
Dong-Soo Lee ◽  
Chang-Gue Son
Keyword(s):  
Oxidative Stress ◽  
Chronic Hepatitis ◽  
Liver Fibrosis ◽  
Hepatitis B ◽  
Antioxidant Capacity ◽  
Chronic Hepatitis B ◽  
Hepatic Fibrosis ◽  
Total Antioxidant Capacity ◽  
Hbv Dna ◽  
Total Antioxidant

Oxidative stress plays a pivotal role in the progression of chronic hepatitis B; however, it is unclear whether the status of blood oxidative stress and antioxidant components differs depending on the degree of hepatic fibrosis. To explore the relationship between oxidative stress/antioxidant capacity and the extent of hepatic fibrosis, fifty-four subjects with liver fibrosis (5.5 ≤ liver stiffness measurement (LSM) score ≤ 16.0 kPa) by chronic hepatitis B virus (HBV) were analyzed. From the analysis of eight kinds of serum oxidative stress/antioxidant profiles and liver fibrosis degrees, the level of total antioxidant capacity (TAC) reflected a negative correlation with the severity of hepatic fibrosis (Pearson correlation, r = −0.35, p = 0.01). Moreover, TAC showed higher sensitivity (73.91%) than the aspartate transaminase (AST) to platelet ratio index (APRI, 56.52%) in the receiver operating characteristic (ROC) curves. Interestingly, the TAC level finely reflected the fibrosis degree in inactive carriers (HBV DNA < 2000 IU/mL), while the APRI did in active carriers (HBV DNA > 2000 IU/mL). In conclusion, TAC is a promising biomarker for evaluating the progression of liver fibrosis in patients with HBV, and this finding may indicate the involvement of TAC-composing factors in the pathogenesis of hepatic fibrosis in chronic HBV carriers.

scholarly journals Total Antioxidant Capacity and Lipid Peroxidation Status in Cervical Cancer Patients Compared with Women Without Cervical Cancer in Bangladesh

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
Taslima Nigar ◽  
Annekathryn Goodman ◽  
Shahana Pervin
Keyword(s):  
Oxidative Stress ◽  
Cervical Cancer ◽  
Lipid Peroxidation ◽  
Ascorbic Acid ◽  
Antioxidant Capacity ◽  
Cancer Patients ◽  
Total Antioxidant Capacity ◽  
Stress Index ◽  
Oxidative Stress Index ◽  
Total Antioxidant

Abstract Purpose Over the past several decades, research has suggested reactive oxygen species act as cofactors for cervical cancer development. The aim of this study is to evaluate the antioxidant and lipid peroxidation status in cervical cancer patients in Bangladesh. Methods From December 2017 to 2018, a cross-sectional observational study was conducted on 50 cervical cancer patients and 50 controls. Plasma levels of lipid peroxidation and total antioxidant capacity were measured. The Student’s t test was used for statistical analysis. P values less than 0.05 were taken as a level of significance. Results There was a significant reduction in total antioxidant levels in patients with cervical cancer, 972.77 ± 244.22 SD µmol equivalent to ascorbic acid/L, compared to normal controls, 1720.13 ± 150.81 SD µmol equivalent to ascorbic acid/L (P < 0.001). Levels of lipid peroxidation were found to be significantly higher in cervical cancer, 7.49 ± 2.13 SD µmol/L, than in women without cervical cancer, 3.28 ± 0.58 SD µmol/L (P < 0.001). The cervical cancer patients had significantly higher levels of oxidative stress index (0.83 ± 0.31) in comparison to controls (0.19 ± 0.04) (P < 0.001). Conclusion There was an increased oxidative stress index due to imbalance between lipid peroxidation generation and total antioxidant capacity in cervical cancer patients. Further studies are needed to explore the role of oxidative stress as a cofactor for cervical carcinogenesis.

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