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Alrouji M, Al-Kuraishy HM, Al-Gareeb AI, Alshammari MS, Alexiou A, Papadakis M, Bahaa MM, Batiha GES. Role of uric acid in neurodegenerative diseases, focusing on Alzheimer and Parkinson disease: A new perspective. Neuropsychopharmacol Rep 2024. [PMID: 39075837 DOI: 10.1002/npr2.12445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/19/2024] [Accepted: 04/07/2024] [Indexed: 07/31/2024] Open
Abstract
Neurodegenerative diseases (NDs) such as Alzheimer disease (AD) and Parkinson disease (PD) are group of diseases affecting the central nervous system (CNS) characterized by progressive neurodegenerations and cognitive impairment. Findings from different studies highlighted the beneficial and detrimental effects of serum uric acid on the development and progression of NDs. Therefore, this mini-review aims to discuss the beneficial and detrimental effects of uric on NDs. The neuroprotective effect of uric acid is mainly related to the antioxidant effect of uric acid which alleviates oxidative stress-induced neurodegeneration in AD and PD. However, long-term effect of hyperuricemia prompts for the development and progression of cognitive impairment. Hyperuricemia is associated with cognitive impairment and dementia, and gout increases dementia risk. In addition, hyperuricemia can cause cerebral vascular injury which is a risk factor for vascular dementia and cognitive impairment. Taken together, the relationship between uric acid and NDs risk remains conflicting. Hence, preclinical and clinical studies are indicated in this regard.
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Affiliation(s)
- Mohammed Alrouji
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia
| | - Hayder M Al-Kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | - Ali I Al-Gareeb
- Department of Clinical Pharmacology and Medicine, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | - Mohammed S Alshammari
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia
| | - Athanasios Alexiou
- University Centre for Research & Development, Chandigarh University, Mohali, Punjab, India
- Department of Research & Development, Funogen, Athens, Greece
- Department of Research & Development, AFNP Med, Wien, Austria
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, New South Wales, Australia
| | - Marios Papadakis
- Department of Surgery II, University Hospital Witten-Herdecke, University of Witten-Herdecke, Wuppertal, Germany
| | - Mostafa M Bahaa
- Faculty of Pharmacy, Pharmacy Practice Department, Horus University, New Damietta, Egypt
| | - Gaber El-Saber Batiha
- Faculty of Veterinary Medicine, Department of Pharmacology and Therapeutics, Damanhour University, Damanhour, Egypt
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Park SM, Gi MY, Cha JA, Sung HH, Park SY, Park CH, Yoon H. The relationship between anemia and hyperuricemia and hypertension in Korean adults: the Korea National Health and Nutrition Examination Survey 2016-2018. Curr Med Res Opin 2023; 39:819-825. [PMID: 37162320 DOI: 10.1080/03007995.2023.2213004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 05/02/2023] [Accepted: 05/09/2023] [Indexed: 05/11/2023]
Abstract
OBJECTIVE It is unclear whether uric acid (UA) has a negative or positive effect on anemia, and this may vary depending on the presence or absence of chronic disease such as hypertension (HTN). The present study was conducted to assess the relationship between anemia and hyperuricemia in Korean adults with or without hypertension. METHODS Data from 16,740 adults (age ≥20 years) in the Korean National Health and Nutrition Examination Survey (2016 - 2018) were analyzed. RESULTS Several key findings were identified. First, after adjusting for the related variables in the non-HTN group, the odds ratio (OR) of anemia (hemoglobin [Hb] ≥ 13.0 mg/dL in men and ≥12.0 mg/dL in women), using the normouricemia (UA < 7.0 mg/dL in men and UA < 6.0 mg/dL in women) as a reference, was inversely significant for the hyperuricemia (UA ≥ 7.0 mg/dL in men and ≥6.0 mg/dL in women) in the overall population (OR, 0.589; 95% confidence interval [CI], 0.409-0.848) and women (OR, 0.575; 95% CI, 0.363-0.909) but not in men (OR, 0.836; 95% CI, 0.441-1.586). Second, after adjusting for the related variables in the HTN group, the OR of anemia, using the normouricemia as a reference, was positively significant for the hyperuricemia in the overall population (OR, 1.501; 95% CI, 1.167-1.930), men (OR, 1.706; 95% CI, 1.154-2.523), and women (OR, 1.512; 95% CI, 1.079-2.210). CONCLUSIONS Hyperuricemia was positively associated with anemia in men and women with HTN. Hyperuricemia was inversely associated with anemia in women without HTN but not in men without HTN.
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Affiliation(s)
- Sang Muk Park
- Department of Biomedical Laboratory Science, Dongkang College, Gwangju, South Korea
| | - Mi Young Gi
- Department of Nursing, Christian College of Nursing, Gwangju, South Korea
| | - Ju Ae Cha
- Department of Nursing, Chunnam Technouniversity, Jeollanam-do, South Korea
| | - Hyun Ho Sung
- Department of Clinical Laboratory Science, Dongnam Health University, Gyeonggi-do, South Korea
| | - So Young Park
- Department of Dental Hygiene, Wonkwang Health Science University, Jeollabuk-do, South Korea
| | - Cho Hee Park
- Department of global Medical Beauty, Konyang University, Chungcheongnam-do, South Korea
| | - Hyun Yoon
- Department of Clinical Laboratory Science, Wonkwang Health Science University, Jeollabuk-do, South Korea
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Li K, Li K, Yao Q, Shui X, Zheng J, He Y, Lei W. The potential relationship of coronary artery disease and hyperuricemia: A cardiometabolic risk factor. Heliyon 2023; 9:e16097. [PMID: 37215840 PMCID: PMC10199191 DOI: 10.1016/j.heliyon.2023.e16097] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/03/2023] [Accepted: 05/05/2023] [Indexed: 05/24/2023] Open
Abstract
Coronary arterial disease (CAD) is the leading cause of mortality in the world. Hyperuricemia has recently emerged as a novel independent risk factor of CAD, in addition to the traditional risk factors such as hyperlipidemia, smoking, and obesity. Several clinical studies have shown that hyperuricemia is strongly associated with the risk, progression and poor prognosis of CAD, as well as verifying an association with traditional CAD risk factors. Uric acid or enzymes in the uric acid production pathway are associated with inflammation, oxidative stress, regulation of multiple signaling pathways and the renin-angiotensin-aldosterone system (RAAS), and these pathophysiological alterations are currently the main mechanisms of coronary atherosclerosis formation. The risk of death from CAD can be effectively reduced by the uric acid-lowering therapy, but the interventional treatment of uric acid levels in patients with CAD remains controversial due to the diversity of co-morbidities and the complexity of causative factors. In this review, we analyze the association between hyperuricemia and CAD, elucidate the possible mechanisms by which uric acid induces or exacerbates CAD, and discuss the benefits and drawbacks of uric acid-lowering therapy. This review could provide theoretical references for the prevention and management of hyperuricemia-associated CAD.
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Affiliation(s)
- Kaiyue Li
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Kongwei Li
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
- Cardiovascular Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Qingmei Yao
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Xiaorong Shui
- Laboratory of Vascular Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Jing Zheng
- Department of Obstetrics and Gynecology, University of Wisconsin, Madison, WI, USA
| | - Yuan He
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
- Laboratory of Cardiovascular Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Wei Lei
- Guangdong Provincial Engineering Technology Research Center for Molecular Diagnosis and Innovative Drugs Translation of Cardiopulmonary Vascular Diseases, University Joint Laboratory of Guangdong Province and Macao Region on Molecular Targets and Intervention of Cardiovascular Diseases, Department of Precision Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
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Sadowska-Bartosz I, Bartosz G. Peroxiredoxin 2: An Important Element of the Antioxidant Defense of the Erythrocyte. Antioxidants (Basel) 2023; 12:antiox12051012. [PMID: 37237878 DOI: 10.3390/antiox12051012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/14/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Peroxiredoxin 2 (Prdx2) is the third most abundant erythrocyte protein. It was known previously as calpromotin since its binding to the membrane stimulates the calcium-dependent potassium channel. Prdx2 is present mostly in cytosol in the form of non-covalent dimers but may associate into doughnut-like decamers and other oligomers. Prdx2 reacts rapidly with hydrogen peroxide (k > 107 M-1 s-1). It is the main erythrocyte antioxidant that removes hydrogen peroxide formed endogenously by hemoglobin autoxidation. Prdx2 also reduces other peroxides including lipid, urate, amino acid, and protein hydroperoxides and peroxynitrite. Oxidized Prdx2 can be reduced at the expense of thioredoxin but also of other thiols, especially glutathione. Further reactions of Prdx2 with oxidants lead to hyperoxidation (formation of sulfinyl or sulfonyl derivatives of the peroxidative cysteine). The sulfinyl derivative can be reduced by sulfiredoxin. Circadian oscillations in the level of hyperoxidation of erythrocyte Prdx2 were reported. The protein can be subject to post-translational modifications; some of them, such as phosphorylation, nitration, and acetylation, increase its activity. Prdx2 can also act as a chaperone for hemoglobin and erythrocyte membrane proteins, especially during the maturation of erythrocyte precursors. The extent of Prdx2 oxidation is increased in various diseases and can be an index of oxidative stress.
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Affiliation(s)
- Izabela Sadowska-Bartosz
- Laboratory of Analytical Biochemistry, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszow, 4 Zelwerowicza St., 35-601 Rzeszow, Poland
| | - Grzegorz Bartosz
- Department of Bioenergetics, Food Analysis and Microbiology, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszów, 4 Zelwerowicza St., 35-601 Rzeszow, Poland
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Seo HY, Mun CY, Park CY, Bin Choi S, Hwang JH, Lee JH, Yoon H. The relationship between hyperuricemia and anemia and metabolic syndrome in Korean adults: The Korea National Health and Nutrition Examination Survey 2019. Prim Care Diabetes 2023; 17:91-97. [PMID: 36456398 DOI: 10.1016/j.pcd.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022]
Abstract
AIM The present study was conducted to assess the relationship between hyperuricemia and anemia in Korean adults with or without metabolic syndrome (MetS). METHODS Data from 6073 adults (age ≥ 20 years) in the Eighth Korean National Health and Nutrition Examination Survey (2019) were analyzed. RESULTS Several key findings were identified. First, after adjusting for the related variables, the hemoglobin [Hb] level in the hyperuricemia subgroup (uric acid [UA] ≥ 7.0 mg/dL in men or ≥ 6.0 mg/dL in women) was higher than in the normouricemia subgroup (UA < 7.0 mg/dL in men or < 6.0 mg/dL in women) in subjects with non-MetS (p = 0.005), whereas it was lower than in the normouricemia subgroup in subjects with MetS (p = 0.032). Second, after adjusting for the related variables, the odds ratio (OR) of anemia (Hb < 13.0 g/dL in men or < 12 g/dL in women), using the normouricemia subgroup as a reference, was negatively significant for the hyperuricemia subgroup in subjects with non-MetS (OR, 0.478; 95 % CI, 0.300-0.761) but positively significant for the hyperuricemia subgroup in subjects with MetS (OR, 1.765; 95 % CI, 1.160-2.198). CONCLUSIONS Hyperuricemia was associated with a decrease in anemia in non-MetS but an increase in anemia in MetS.
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Affiliation(s)
- Ha Young Seo
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Chae Young Mun
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Chea Yeon Park
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Soo Bin Choi
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Ji Hye Hwang
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Jun Ho Lee
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea
| | - Hyun Yoon
- Department of Biomedical Laboratory Science, Wonkwang Health Science University, 345-13, Sinyong-dong, Iksan-si, Jeollabuk-do 54538, South Korea.
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Lin Y, Yang Y, Fu T, Lin L, Zhang X, Guo Q, Chen Z, Liao B, Huang J. Impairment of kidney function and kidney cancer: A bidirectional Mendelian randomization study. Cancer Med 2023; 12:3610-3622. [PMID: 36069056 PMCID: PMC9939186 DOI: 10.1002/cam4.5204] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 07/21/2022] [Accepted: 08/23/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Many observational epidemiology studies discovered that kidney cancer and impaired kidney function have a bidirectional relationship. However, it remains unclear whether these two kinds of traits are causally linked. In this study, we aimed to investigate the bidirectional causal relation between kidney cancer and kidney function biomarkers (creatinine-based estimated glomerular filtration rate (eGFRcrea), cystatin C-based estimated glomerular filtration rate (eGFRcys), blood urea nitrogen (BUN), serum urate, and urinary albumin-to-creatinine ratio (UACR)). METHODS For both directions, single-nucleotide polymorphisms (SNPs), as genetic instruments, for the five kidney function traits were selected from up to 1,004,040 individuals, and SNPs for kidney cancer were from 408,786 participants(1338 cases). In the main analysis, we applied two state-of-the-art MR methods, namely, contamination mixture and Robust Adjusted Profile Score to downweight the effect of weak instrument bias, pleiotropy, and extreme outliers. We additionally conducted traditional MR analyses as sensitivity analyses. Summary-level data of European ancestry were extracted from UK Biobank, Chronic Kidney Disease Genetics Consortium, and Kaiser Permanente. RESULTS Based on 99 SNPs, we found that the eGFRcrea had a significant negative causal effect on the risk of kidney cancer (OR = 0.007, 95% CI:2.6 × 10-4 -0.569, p = 0.041). After adjusting for body composition or diabetes, urate had a significant negative causal effect on kidney cancer (OR <1, p < 0.05). For UACR, it showed a strong causal effect on kidney cancer, after adjusting for body composition (OR = 14.503, 95% CI: 2.546-96.001, p = 0.032). Due to lacking significant signals and effect power for the reverse MR, further investigations are warranted. CONCLUSIONS Our study suggested a potential causal effect of damaged kidney function on kidney cancer. EGFRcrea and UACR might be causally associated with kidney cancer, especially when patients were comorbid with obesity or diabetes. We called for larger sample-size studies to further unravel the underlying causal relationship and the exact mechanism.
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Affiliation(s)
- Yifei Lin
- West China Hospital, Sichuan UniversityChengduPeople's Republic of China
- Program in Genetic Epidemiology and Statistical Genetics, Department of EpidemiologyHarvard T.H. Chan School of Public HealthBostonMassachusettsUSA
| | - Yong Yang
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
| | - Tingting Fu
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
| | - Ling Lin
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
| | - Xingming Zhang
- Department of UrologyInstitute of Urology, West China Hospital, Sichuan UniversityChengduPeople's Republic of China
| | - Qiong Guo
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
| | - Zhenglong Chen
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
| | - Banghua Liao
- Department of UrologyInstitute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan UniversityChengduPeople's Republic of China
| | - Jin Huang
- Medical Device Regulatory Research and Evaluation Centre, West China HospitalSichuan UniversityChengduPeople's Republic of China
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Roman Y. Pathway for ascertaining the role of uric acid in neurodegenerative diseases. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2022; 14:e12329. [PMID: 35769871 PMCID: PMC9211692 DOI: 10.1002/dad2.12329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/28/2022] [Accepted: 03/04/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Youssef Roman
- Department of Pharmacotherapy and Outcomes ScienceSchool of Pharmacy, Virginia Commonwealth UniversityRichmondVirginiaUSA
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8
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Chen WY, Fu YP, Zhou M. The bidirectional relationship between metabolic syndrome and hyperuricemia in China: A longitudinal study from CHARLS. Endocrine 2022; 76:62-69. [PMID: 35040045 DOI: 10.1007/s12020-022-02979-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 01/09/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE It has been reported that metabolic syndrome (MetS) has been associated with hyperuricemia. However, current findings have been inconclusive regarding the direction of this association. The objective of this study was to clarify the possible directional relationship between hyperuricemia and MetS. DESIGN This study used two waves of data from the China Health and Retirement Longitudinal Study (CHARLS) in 2011 and 2015 (N = 6,253, aged ≥40 years). Logistic regression and cross-lagged panel design were performed to evaluate the bidirectional association between uric acid with MetS. MetS score is defined as the number of MetS components present. RESULTS New-onset hyperuricemia and MetS were observed in a four-year follow-up study among 719 and 625 participants, respectively. A positive association was observed in the adjusted logistical regression model between baseline MetS score and new-onset hyperuricemia (P for trend <0.001), and also between baseline serum uric acid (SUA) and new-onset MetS (P for trend <0.001). Cross-lagged panel analysis indicated MetS score positively and prospectively predicted SUA, but not vice versa. After stratification by sex, we observed a strong, bidirectional relationship between MetS score and SUA indicating that diagnosis in one illness increased the risk of the other, both men and women. Moreover, this study also found that systolic blood pressure (P < 0.001) and triglycerides (P < 0.001) had a bidirectional relationship with SUA. CONCLUSIONS The results of this study indicated a bidirectional relationship between MetS and hyperuricemia.
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Affiliation(s)
- Wen-Yu Chen
- Department of Endocrinology and Metabolism, Nanchang University Second Affiliated Hospital, Nanchang, Jiangxi, 330006, China.
| | - Yan-Peng Fu
- Second Clinical Medical College of Nanchang University, Nanchang, Jiangxi, 330006, China
| | - Min Zhou
- Department of Endocrinology and Metabolism, Nanchang University Second Affiliated Hospital, Nanchang, Jiangxi, 330006, China
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Klichkhanov NK, Nikitina ER, Shihamirova ZM, Astaeva MD, Chalabov SI, Krivchenko AI. Erythrocytes of Little Ground Squirrels Undergo Reversible Oxidative Stress During Arousal From Hibernation. Front Physiol 2021; 12:730657. [PMID: 34690805 PMCID: PMC8529035 DOI: 10.3389/fphys.2021.730657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/07/2021] [Indexed: 12/30/2022] Open
Abstract
The hibernation of small mammals is characterized by long torpor bouts alternating with short periods of arousal. During arousal, due to a significant increase in oxygen consumption, tissue perfusion, and the launch of thermogenesis in cells, a large amount of reactive oxygen species (ROS) and nitrogen (RNS) can be formed, which can trigger oxidative stress in cells. To estimate this possibility, we studied the intensity of free-radical processes in the red blood cells (RBCs) of little ground squirrels (LGS; Spermophilus pygmaeus) in the dynamics of arousal from hibernation. We found that in the torpid state, the degree of generation of ROS and RNS (8.3%, p>0.09; 20.7%, p<0.001, respectively), the degree of oxidative modification of membrane lipids and RBC proteins is at a low level (47%, p<0.001; 82.7%, p<0.001, respectively) compared to the summer control. At the same time, the activity of superoxide dismutase (SOD) and catalase (CAT) in RBC is significantly reduced (32.8%, p<0.001; 22.2%, p<0.001, respectively), but not the level of glutathione (GSH). In the torpid state, SOD is activated by exogenous GSH in concentration-dependent manner, which indicates reversible enzyme inhibition. During the arousal of ground squirrels, when the body temperature reaches 25°C, RBCs are exposed oxidative stress. This is confirmed by the maximum increase in the level of uric acid (25.4%, p<0.001) in plasma, a marker of oxidative modification of lipids [thiobarbituric acid reactive substances (TBARS); 82%, p < 0.001] and proteins (carbonyl groups; 499%, p < 0.001) in RBC membranes, as well as the decrease in the level of GSH (19.7%, p < 0.001) in erythrocytes relative to the torpid state and activity of SOD and CAT in erythrocytes to values at the Tb 20°C. After full recovery of body temperature, the level of GSH increases, the ratio of SOD/CAT is restored, which significantly reduces the degree of oxidative damage of lipids and proteins of RBC membranes. Thus, the oxidative stress detected at Tb 25°C was transient and physiologically regulated.
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Affiliation(s)
| | - Elena R Nikitina
- Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
| | | | - Maria D Astaeva
- Department of Biochemistry, Dagestan State University, Makhachkala, Russia
| | - Shamil I Chalabov
- Department of Biochemistry, Dagestan State University, Makhachkala, Russia.,Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
| | - Aleksandr I Krivchenko
- Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
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Ahmad S, Tufail N, Parveen N, Mahmood R. Attenuation of Hg(II)-induced cellular and DNA damage in human blood cells by uric acid. Biochem Cell Biol 2021; 100:45-58. [PMID: 34653346 DOI: 10.1139/bcb-2021-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Mercury (Hg) is a widespread environmental pollutant and toxicant which induces multiple organ damage in humans and animals. Hg toxicity is mediated by the induction of oxidative stress in target cells. We have used uric acid (UA), a potent antioxidant found in biological fluids, to protect human red blood cells (RBC) and lymphocytes against Hg-mediated cell, organelle and genotoxicity. RBC were incubated with HgCl2, an Hg(II) compound, either alone or in presence of UA. Incubation of RBC with only HgCl2 increased production of nitrogen and oxygen radical species, enhanced methemoglobin levels, heme degradation, free ferrous iron, oxidation of proteins and membrane lipids and reduced antioxidant capacity of cells. UA enhanced the antioxidant capacity of RBC and restored metabolic, plasma membrane-bound and antioxidant enzyme activities. Scanning electron microscopy showed that UA prevented HgCl2-mediated morphological changes in RBC. HgCl2 dissipated the mitochondrial membrane potential and increased lysosomal membrane damage in lymphocytes, but UA pre-treatment attenuated these effects. Genotoxicity analysis by comet assay showed that UA protected lymphocyte DNA from HgCl2-induced damage. Importantly, UA itself did not exhibit any deleterious effects in either RBC or lymphocytes. Thus, UA protects human blood cells from Hg(II)-mediated oxidative damage reducing the harmful effects of this extremely toxic metal. We suggest that UA performs a similar protective role in the plasma against heavy metal toxicity.
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Affiliation(s)
- Shahbaz Ahmad
- Aligarh Muslim University Faculty of Life Sciences, 154014, Aligarh, Uttar Pradesh, India;
| | - Neda Tufail
- Aligarh Muslim University Faculty of Life Sciences, 154014, Aligarh, Uttar Pradesh, India;
| | - Nazia Parveen
- Aligarh Muslim University Faculty of Life Sciences, 154014, Aligarh, Uttar Pradesh, India;
| | - Riaz Mahmood
- Aligarh Muslim University, Department of Biochemistry, Department of Biochemistry, Faculty of Life Sciences, AMU, Aligarh, Aligarh, Uttar Pradesh, India, 202002;
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Tripolino C, Ciaffi J, Ruscitti P, Giacomelli R, Meliconi R, Ursini F. Hyperuricemia in Psoriatic Arthritis: Epidemiology, Pathophysiology, and Clinical Implications. Front Med (Lausanne) 2021; 8:737573. [PMID: 34631755 PMCID: PMC8492931 DOI: 10.3389/fmed.2021.737573] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/27/2021] [Indexed: 01/02/2023] Open
Abstract
Psoriatic arthritis (PsA) represents the articular component of the systemic psoriatic disease and the extra-cutaneous disorder most frequently found in patients with psoriasis. Besides the articular involvement, PsA is associated with several metabolic abnormalities such as insulin resistance, hypertension, diabetes and hyperuricemia. Uric acid is the final product of purine metabolism and the etiological substrate of gout. Accumulating evidence highlights the emerging role of hyperuricemia as a major cardiovascular risk factor. Moreover, different studies evaluated the interplay between hyperuricemia and psoriatic disease, suggesting that individuals affected by psoriasis or PsA might present higher serum levels of uric acid and that hyperuricemia might affect severity of clinical manifestations and degree of inflammation in PsA patients. In this review, we focus on the bidirectional relationship between uric acid and PsA, analyzing how uric acid may be involved in the pathogenesis of psoriasis/PsA and how clinical manifestations of PsA and inflammatory mediators are affected by uric acid concentrations. Finally, the effects of anti-rheumatic drugs on uric acid levels and the potential benefit of urate-lowering therapies on psoriasis and PsA were summarized.
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Affiliation(s)
- Cesare Tripolino
- Geriatric Medicine Unit, Department of Medical Functional Area, "San Giovanni di Dio" Hospital, Crotone, Italy
| | - Jacopo Ciaffi
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy
| | - Piero Ruscitti
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Roberto Giacomelli
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico Di Roma, Rome, Italy
| | - Riccardo Meliconi
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy.,Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Francesco Ursini
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy.,Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
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Pathophysiology of hyperuricemia and its clinical significance - a narrative review. Reumatologia 2020; 58:312-323. [PMID: 33227090 PMCID: PMC7667948 DOI: 10.5114/reum.2020.100140] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 10/12/2020] [Indexed: 01/07/2023] Open
Abstract
Hyperuricemia, i.e. increased serum uric acid (UA) concentration, is a common problem in clinical practice. While there are clear guidelines concerning management of symptomatic hyperuricemia in acute conditions such as gout, urolithiasis or acute urate nephropathy, less is known about their secondary prevention. Moreover, despite the ongoing debate on the role of UA in the pathogenesis of chronic kidney disease, hypertension, cardiovascular disease and heart failure, the management of asymptomatic hyperuricemia in patients with these chronic conditions is still mainly up to physicians' judgement. Individual considerations should always be taken into account when prescribing urate-lowering therapy. In this narrative review study, we attempt to present current trends concerning treatment of patients with either symptomatic or asymptomatic hyperuricemia in the light of the available knowledge on the role of hyperuricemia in the development of gout, renal, cardiovascular and other diseases.
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Mi S, Gong L, Sui Z. Friend or Foe? An Unrecognized Role of Uric Acid in Cancer Development and the Potential Anticancer Effects of Uric Acid-lowering Drugs. J Cancer 2020; 11:5236-5244. [PMID: 32742469 PMCID: PMC7378935 DOI: 10.7150/jca.46200] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/15/2020] [Indexed: 02/07/2023] Open
Abstract
In recent years, metabolic syndrome (Mets) has been a hot topic among medical scientists. Mets has an intimate relationship with the incidence and development of various cancers. As a contributory factor of Mets, hyperuricemia actually plays an inseparable role in the formation of various metabolic disorders. Although uric acid is classically considered an antioxidant with beneficial effects, mounting evidence indicates that a high serum uric acid (SUA) level may serve as a pro-oxidant to generate inflammatory reactions and oxidative stress. In this review, we describe the unrecognized role of hyperuricemia in cancer development and summarize major mechanisms linking uric acid to carcinogenesis. Furthermore, we also discuss the potential mechanism of liver metastasis of cancer and list some types of uric acid-lowering agents, which may exert anticancer effects.
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Affiliation(s)
- Shuyi Mi
- Department of Gastroenterology, The First People's Hospital of Yuhang District, Hangzhou, Zhejiang Province, China.,School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Liang Gong
- Department of Otolaryngology, Cixi People's Hospital, Ningbo, Zhejiang Province, China
| | - Ziqi Sui
- Department of Gastroenterology, The First People's Hospital of Yuhang District, Hangzhou, Zhejiang Province, China.,Department of Pathophysiology, College of Basic Medical Sciences, Jiamusi University, Jiamusi, Heilongjiang Province, China
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