Coenzyme Q10, Copper, Zinc, and Lipid Peroxidation Levels in Serum of Patients with Chronic Obstructive Pulmonary Disease (original) (raw)
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Background and objective: Oxidative stress has important role in pathogenesis of chronic obstructive pulmonary disease (COPD). There are studies suggesting the role of increased oxidative stress and decreased antioxidants in COPD patients. The aim of this study was to assess the levels of oxidative and anti-oxidant system elements, serum concentrations of trace elements and blood viscosity in COPD patients. Methods: Our study group consisted of 25 male patients with COPD, and 25 healthy non-smokers. The lipid peroxidation product malondialdehyde (MDA) and anti-oxidant system elements superoxide dismutase (SOD), Catalase (CAT) and Glutathione (GSH) were measured spectrophotometrically. Serum concentrations of Copper (Cu), Zinc (Zn) and Iron (Fe) were determined using an atomic absorption spectrophotometer. Additionally, we measured blood viscosity using a viscosimeter. Results: Lipid peroxidation product MDA levels were found to be higher in plasma and erythrocytes. However GSH level...
Trace elements as a component of oxidative stress in COPD
Respirology, 2004
The purpose of this study was to assess the serum concentrations of those trace elements that act as a component of oxidative stress in COPD patients. Clinically stable COPD outpatients (n = 26) and healthy controls (n = 24) were studied. Serum concentrations of copper (Cu) and zinc (Zn) were determined using a Varian Spectra AA220 flame atomic absorption spectrophotometer. Serum concentration of iron (Fe) was measured by the ferene assay, using a commercially available kit (IL Test Iron) with the ILAb 900 autoanalyser. The lipid peroxidation product malondialdehyde (MDA) in serum samples was measured spectrophotometrically in terms of TBARS (thiobarbituric acid reactive substances). The serum MDA concentration in COPD patients was found to be similar to the control group (0.68 +/- 0.15 nmol/mL vs 0.62 +/- 0.13 nmol/mL, respectively; P= 0.163). The serum concentrations of the trace elements in both study groups were in the normal reference range. There was no difference in Fe concentration between COPD patients and the control group (0.81 +/- 0.38 micro g/mL vs 0.92 +/- 0.41 micro g/mL; P= 0.360). Copper concentrations were higher (1.06 +/- 0.26 microg/mL vs 0.92 +/- 0.19 microg/mL; P <0.040); while zinc was lower in the COPD group compared to the controls (0.83 +/- 0.25 microg/mL vs 1.03 +/- 0.23 microg/mL; P= 0.006). Serum Zn concentrations were lower in the severe COPD patients compared to mild-moderate COPD patients (P = 0.038). The results of this study indicate that there are alterations in serum concentrations of trace elements in COPD patients, suggesting that they may play a role in the pathophysiology of this disease by virtue of their role in oxidative stress. We recommend further studies on the role of trace elements in the pathophysiology of COPD, their association with markers of oxidant/antioxidant status and on the clinical significance of their deficiency.
The Serum Levels of the Heavy Metals Cu, Zn, Cd, and Pb and Progression of COPD—A Preliminary Study
International Journal of Environmental Research and Public Health
There is evidence in previous studies that high levels of heavy metals may play a key role in the development of COPD due to the induction of chronic inflammation and oxidative stress. In this preliminary study, we used atomic absorption spectrophotometry to measure the levels of four heavy metals (Cu, Zn, Cd, and Pb) in blood serum of COPD patients and controls over 2 years. Clinical data on disease progression or absence were collected in patients living in the industrial region of Stara Zagora, Bulgaria. The mean values of Cu in the serum of patients with COPD and the control group were 374.29 ± 15.03 μg/l and 238.55 ± 175.31 μg/l, Zn—2010.435 ± 670.006 μg/l and 1672.78 ± 934.27 μg/l, Cd—0.334 ± 0.0216 μg/l and 0.395 ± 0.110 μg/l and Pb—0.0732 ± 0.009 μg/l and 0.075 ± 0.0153 μg/l. This is probably because these elements are biogenic and are used in the body for its anti-oxidant protection. In fact, it cannot be stated with certainty that elevated levels of Cu and Zn in the enviro...
Zanjan University of Medical Sciences, Zanjan, Iran., 2023
Background and Objective: Chronic inflammation, dyspnea and activity limitation are common phenomena in patients with chronic obstructive lung disease. Clinical studies suggest that Ubiquinone has anti-inflammatory and energetic properties. Here the beneficial effect of CoQ10 in patients with COPD will be studied. Materials and Methods: Baesd on the census method, 90 patients with moderate to severe COPD were divided into two identical placebo and CoQ10 groups. High sensitive-C-reactive protein (hs-CRP), Forced Expiratory Volume in 1 second, numerical rating breathlessness scale and "the time to get exhausted" were evaluated and recorded at baseline and the end of the study. The CoQ10 group received 120 mg of CoQ10 supplement per day versus the placebo group who also received a placebo (identical in look, size and taste to pharmaceutical sample) and were followed for 6 weeks. Data were analyzed using t-test, and nonparametric statistical tests. Qualitative variables were assessed by chi-square or Fisher exact tests. Results: The study included 49(53.6%) women and 41(46.4%) men, collectively 90 patients with moderate to severe COPD. The mean age was 66.97±12.59 years in the placebo and 64.21±11.78 years in the CoQ10 group (p=0.30). Breathlessness scale was improved in CoQ10 group (p<0.001). hs-CRP significantly declined after intervention in the CoQ10 compared to the placebo group (p<0.001).No serious side effects were observed as a result of CoQ10 consumption. Conclusion: Daily administration of CoQ10 in COPD patients increases hs-CRP and improves dyspnea and "the time to get exhausted” without side effect.
Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine, 2014
The chaperone to Zn-Cu superoxide dismutase (CCS) has been postulated as a candidate copper indicator, changing in a consistent manner in induced and recovered copper deficiency, in experimental cell and animal models. In real life people have various conditions that may modify molecules acting as acute phase proteins, such as serum ceruloplasmin and copper concentration and could alter CCS responses. With the hypothesis that CCS mRNA transcripts and protein would be different in individuals suffering inflammatory processes in comparison to healthy individuals, we assessed adult individuals who, although not ill had conditions known to induce variable degrees of inflammation. Screening of 600 adults resulted in two study groups, formed on the basis of their clinical history and levels of serum C reactive protein (CRP): Group 1 (n = 61, mean (range) CRP = 0.9 (0.3-2.0 mg/dL) and Group 2 (n = 150, mean (range) CRP = 6.1 (4.3-8.7 mg/dL). Results showed that mRNA transcripts relative ab...
Oxidative stress status and plasma trace elements in patients with asthma or allergic rhinitis
Allergologia et Immunopathologia, 2011
Introduction: This study was conducted to evaluate the oxidant/antioxidant balance (oxidative stress status) and plasma essential trace element levels in patients with bronchial asthma or allergic rhinitis. Methods: A total of 94 individuals consisting of 19 allergic asthmatics; 17 non-allergic asthmatics; 22 patients with allergic rhinitis; and 36 healthy control people were enrolled into this study. Superoxide dismutase (CuZnSOD) and glutathione peroxidase (GSH-Px) activity as antioxidant defence mechanism parameters, along with malondialdehyde (MDA) as a marker of lipid peroxidation, were determined in erythrocytes of patient groups and controls. Plasma copper and zinc levels were also determined in all groups. Results: CuZnSOD activity was significantly lower in all groups of patients (p<0.001 for allergic asthmatics, p=0.008 for allergic rhinitis patients, and p<0.001 for non-allergic asthmatics) when compared to those of controls. Erythrocyte GSH-Px enzyme activity was not different when compared to that of the control group. Similarly, the patient groups had no difference from those of the controls with respect to erythrocyte MDA levels. While plasma Cu levels in all asthmatic patients were not different from those of the controls, allergic rhinitis patients had significantly elevated (p<0.001) Cu levels compared to those of the controls. No statistically significant difference was established between patient groups and controls with respect to plasma zinc levels. Conclusion: While defective CuZnSOD activity observed in all patients groups was expected to cause an increase in lipid peroxidation indicated by high MDA levels in these patients groups, the fact that MDA levels were not different from those of controls in all patient groups indicates
Experimental Lung Research, 2010
Suboptimal intake of dietary zinc (Zn) is one of the most common nutritional problems worldwide. Previously, the authors have shown that zinc de ciency (ZD) produces oxidative and nitrosative stress in lung of male rats. The goal of this study is to test the effect of moderate ZD on insulin-like growth factor (IGF)-1, IGF-binding protein (IGFBP)-5, NADH oxidase (NOX)-2, tumor necrosis factor alpha (TNFα), as well as the effect of restoring zinc during the refeeding period. Adult male rats were divided into 3 groups: Zn-adequate control group, Znde cient group, and Zn-refeeding group. eNOS, metallothionein (MT) II, and NOX-2 was increased in ZD group. The authors observed an increased gene transcription of superoxide dismutase (SOD)-2 and gluthathione peroxidase (GPx)-1 in ZD group, as well as in ZD-refeeding group, but catalase (CAT) transcription did not change in the treated groups. Proin ammatory factors, such as TNFα and vascular cell adhesion molecular (VCAM)-1 increased in ZD, whereas it decreased in ZD refeeding. However, peroxisome proliferator-activated receptor gamma (PPARγ ) and IGF-1 gene transcription decreased in ZD, whereas IGFBP-5 decreased in the ZD group. These parameters are associated to alterations in the lung histoarchitecture. The zinc supplementation period is brief (only 10 days), but it is enough to inhibit some proin ammatory factors. Perhaps, zinc de ciency implications must be taken into account in health interventions because in ammation and prooxidant environment are associated with ZD in lung.
Kafkas Universitesi Veteriner Fakultesi Dergisi, 2009
Coenzyme Q10 (CoQ10) is an antioxidant and an electron carrier in the mitochondrial matrix. The aim of this study was to study the protective effect of CoQ10 on the levels of Fe, Cu, Zn and Mn in serum with bleomycin induced pulmonary fibrosis in rats. Thirty Wistar albino rats were randomly divided into three groups: bleomycin alone, bleomycin + CoQ10, and physiological saline alone (control group). The bleomycin group was given 7.5 mg/kg body weight (single dose) bleomycin hydrochloride intratracheally. The bleomycin + CoQ10 group was also instilled with bleomycin hydrochloride but received administrations of CoQ10 twice a week. The control group was treated with physiological saline alone. Animals were euthanized 14 d after intratracheal instillation of bleomycin. Fe, Cu, Zn and Mn were measured in the serum of rats. Atomic absorption spectroscopy was used to measure the Fe, Cu, Zn and Mn levels. Our data may suggest that bleomycin impairs the equilibrium of Fe, Cu, Zn and Mn which are important in the antioxidant system and CoQ10 tends to rechange the imbalance of some trace elements in pulmonary fibrosis.
Copper Deficiency in the Lungs of TNF-α Transgenic Mice
Frontiers in Physiology, 2016
Tumor necrosis factor (TNF)-α is a well-known pro-inflammatory cytokine. Increased expression of Tnf-α is a feature of inflammatory lung diseases, such as asthma, emphysema, fibrosis, and smoking-induced chronic obstructive pulmonary disease (COPD). Using a mouse line with lung-specific Tnf-α overexpression (SPC-TNF-α) to mimic TNF-α-associated lung diseases, we investigated the role of chronic inflammation in the homeostasis of lung trace elements. We performed a quantitative survey of micronutrients and biometals, including copper (Cu), zinc (Zn), and selenium (Se), in the transgenic mice tissues. We also examined the expression of Cu-dependent proteins in the inflammatory lung tissue to determine whether they were affected by the severe Cu deficiency, including cuproenzymes, Cu transporters, and Cu chaperones. We found consistent lung-specific reduction of the metal Cu, with a mean decrease of 70%; however, Zn and Se were unaffected in all other tissues. RT-PCR showed that two Cu enzymes associated with lung pathology were downregulated: amine oxidase, Cu containing 3 (Aoc3) and lysyl oxidase (Lox). Two factors, vascular endothelial growth factor (Vegf) and focal adhesion kinase (Fak), related with Cu deficiency treatment, showed decreased expression in the transgenic inflammatory lung. We concluded that Cu deficiency occurs following chronic TNF-α-induced lung inflammation and this likely plays an essential role in the inflammation-induced lung damage. These results suggest the restoration of lung Cu status as a potential strategy in both treatment and prevention of chronic lung inflammation and related disorders.