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Buchanan WW, Rainsford KD, Kean CA, Kean WF. Medical aspects of the tour by Martin Martin (c 1660-1719) of the Western and Northern Islands of Scotland, Circa 1695. Inflammopharmacology 2024; 32:83-92. [PMID: 37676413 DOI: 10.1007/s10787-023-01334-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 09/08/2023]
Abstract
This review is based investigations on the Western Isles, Scotland, by Martin Martin, a notable Scottish Highlander, academic and medical doctor, of the 17th-18th century. His extensive observations of the geography and peoples of these Isles were recorded in his books, "On the Description of the Western Islands of Scotland Circa 1695" and "A Late Voyage to St Kilda". In these books and subsequent papers there were some noteworthy observations on the occurrence (and as he says non-occurrence) of "epidemical" diseases and conditions afflicting the peoples of The Isle of Skye and the Western Isles of Scotland in this period, and these are discussed in this review. Martin also gives details of a wide variety of remedies that were observed or reported by inhabitants around that time. Some of these remedies are interesting for their relevance to the period but others are of doubtful merit. These are reviewed here more for their significance in the understanding of the diseases and conditions of humans and even in some cases animals at that time. Introductions by Charles Withers and R.W. Munro, 11 and re-assessments of the contributions of Martin and colleagues of that time have given insight into the health and condition of peoples of the Western Isles of Scotland(the Occidental) (Martin 1695; Martin 1716).
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Affiliation(s)
- W Watson Buchanan
- Department of Medicine, McMaster University, Hamilton, ON, L8P 1H6, Canada
| | | | - Colin A Kean
- Haldimand War Memorial Hospital, 400 Broad Street, Dunnville, ON, N1A 2P7, Canada
| | - Walter F Kean
- Department of Medicine, McMaster University, Hamilton, ON, L8P 1H6, Canada.
- Haldimand War Memorial Hospital, 400 Broad Street, Dunnville, ON, N1A 2P7, Canada.
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Soares NM, Pereira GM, Dutra ACL, Artigas NR, Krimberg JS, Monticelli BE, Schumacher-Schuh AF, Almeida RMMD, Rieder CRDM. Low serum uric acid levels and levodopa-induced dyskinesia in Parkinson's disease. ARQUIVOS DE NEURO-PSIQUIATRIA 2023; 81:40-46. [PMID: 36918006 PMCID: PMC10014208 DOI: 10.1055/s-0043-1761294] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/21/2022] [Indexed: 03/16/2023]
Abstract
BACKGROUND Levodopa is the most used and effective medication for motor symptoms of Parkinson disease (PD), its long-term use is associated with the appearance of levodopa-induced dyskinesia (LID). Uric acid (UA) is believed to play an important neuroprotective role in PD. OBJECTIVE To investigate if serum UA levels are related with the presence of LIDs in PD patients. Also, we investigated the associations among UA levels and clinical features of PD. METHODS We enrolled 81 PD patients (dyskinesia = 48; no dyskinesia = 33) in the present study. A blood sample was collected to evaluate serum UA levels, clinical evaluation included the following instruments: Montreal Cognitive Assessment (MoCA), Beck Depression Inventory II (BDI-II), MDS-Unified Parkinson's Disease Rating Scale (MDS-UPDRS), Hoehn and Yahr (HY), and the sub-item 4.1 of MDS-UPDRS IV (score ≥ 1). Additional relevant clinical information was obtained by a clinical questionnaire. RESULTS Serum UA levels were lower in the dyskinesia group when compared with the no dyskinesia group. The same result was found in the UA levels of both men and women. The multivariate analysis showed lower uric acid levels were significantly associated with having dyskinesia (odds ratio [OR] = 0.424; 95% confidence interval [CI]: 0.221-0.746; p = 0.005). Additional analysis verified that serum UA levels are inversely correlated with depressive symptoms, disease duration, MDS-UPDRS IV and time spent with dyskinesia. A positive correlation was found with age at onset of PD symptoms. CONCLUSIONS The present study provides a possible role of serum UA levels in LID present in PD patients.
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Affiliation(s)
- Nayron Medeiros Soares
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre RS, Brazil.
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
- Universidade Federal de Ciências da Saúde de Porto Alegre, Curso de Física Médica, Porto Alegre RS, Brazil.
| | - Gabriela Magalhães Pereira
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre RS, Brazil.
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
- Universidade Federal de Ciências da Saúde de Porto Alegre, Curso de Física Médica, Porto Alegre RS, Brazil.
| | - Ana Carolina Leonardi Dutra
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre RS, Brazil.
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
| | - Nathalie Ribeiro Artigas
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre RS, Brazil.
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
| | - Júlia Schneider Krimberg
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Porto Alegre RS, Brazil.
| | - Bruno Elkfury Monticelli
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
- Universidade Federal do Rio Grande do Sul, Instituto de Psicologia, Porto Alegre RS, Brazil.
| | - Artur Francisco Schumacher-Schuh
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre RS, Brazil.
- Hospital de Clínicas de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
| | | | - Carlos Roberto de Mello Rieder
- Irmandade Santa Casa de Misericórdia de Porto Alegre, Serviço de Neurologia, Porto Alegre RS, Brazil.
- Universidade Federal de Ciências da Saúde de Porto Alegre, Departamento de Clínica Médica, Porto Alegre RS, Brazil.
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Dório M, Benseñor IM, Lotufo P, Santos IS, Fuller R. Reference range of serum uric acid and prevalence of hyperuricemia: a cross-sectional study from baseline data of ELSA-Brasil cohort. Adv Rheumatol 2022; 62:15. [DOI: 10.1186/s42358-022-00246-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 04/21/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Most of the few studies that have established reference ranges for serum uric acid (SUA) have not taken into account factors which may interfere with its levels and followed rigorous laboratory quality standards. The aim of this study was to establish reference ranges for SUA and determine the prevalence of hyperuricemia.
Method
Cross-sectional study including 15,100 participants (all sample) aged 35 to 74 years from baseline data of the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), a multicentric cohort of volunteer civil servants from five universities and one research institute located in different regions of Brazil. It was established a reference sample excluding participants with factors that directly influence SUA levels: glomerular filtration rate lower than 60 ml/min, excessive alcohol intake, use of diuretics, aspirin, estrogen or urate-lowering therapy. SUA was measured using the uricase method and following rigorous international quality standards. Reference ranges were defined as values between percentiles 2.5 (P2.5) and 97.5 (P97.5) of SUA distribution in the reference sample, stratified by sex. Hyperuricemia was defined as SUA ≥ 7 mg/100 ml in the all sample.
Results
The reference sample was composed of 10,340 individuals (55.3% women, median age 50 years). Reference ranges (P2.5 to P97.5) for SUA were: 4.0 to 9.2 mg/100 ml for men and 2.8 to 6.9 mg/100 ml for women. Sex was a major determinant for SUA levels (median [IQR], mg/100 ml: 6.1 [5.3–7.0] for men versus 4.5 [3.9–5.3] for women, p < 0.001). Higher levels of SUA were found in patients with higher BMI. Higher age had (a modest) influence only for women. The prevalence of hyperuricemia for all sample (N = 15,100) was 31.9% (95% confidence interval [CI] 30.8–33.0%) in men and 4.8% (95% CI 4.3–5.3%) in women.
Conclusion
SUA reference ranges were 4.0 to 9.2 mg/100 ml for men and 2.8 to 6.9 mg/100 ml for women. Prevalence of hyperuricemia was 31.9% in men and 4.8% in women. Updated SUA reference ranges and prevalence of hyperuricemia are higher nowadays and might be used to guide laboratories and the screening for diseases related to SUA.
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Li Y, Liu X, Luo Y. Monocyte to high-density lipoprotein cholesterol ratio and serum uric acid in Chinese adults: a cross-sectional study. BMC Endocr Disord 2022; 22:48. [PMID: 35216583 PMCID: PMC8881867 DOI: 10.1186/s12902-022-00966-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/21/2022] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Previous studies have shown that the monocyte to high-density lipoprotein cholesterol (HDL-C) ratio (MHR) is a predictor of various diseases such as coronary heart disease, diabetic microangiopathy, and metabolic syndrome. However, there are few scientific reports on the correlation between MHR and serum uric acid. The objective of this report is to explore the relationship between MHR and serum uric acid in Chinese adults. METHODS This cross-sectional study included 646 participants from southwest China who underwent a health examination at the Health Management Center of Deyang People's Hospital. The examination included blood pressure readings, routine blood tests (lipid, fasting glucose, serum transaminase, and serum uric acid levels), and various standardized questionnaires. We employed a generalized additive model and smoothed curve fitting to explore the relationship between MHR and serum uric acid levels. We then performed subgroup analyses to investigate the robustness of this relationship. RESULTS After adjusting for confounders (age, sex, body mass index, systolic blood pressure, diastolic blood pressure, aspartate transaminase, alanine aminotransferase, fasting glucose, total cholesterol, low-density lipoprotein, smoking, drinking, and exercise status), MHR was found to be positively correlated with serum uric acid levels (P < 0.001). The smoothing curve showed an approximately linear correlation between MHR and serum uric acid levels, and the linear correlation coefficient was 146.74 (95% CI 96.16-197.33, P < 0.0001). The subgroup analyses showed that the effect of MHR on serum uric acid levels was smaller in occasional smokers and smokers than in nonsmokers (P = 0.0194). CONCLUSION MHR was significantly and positively correlated with serum uric acid levels. Additionally, the effect of MHR on serum uric acid levels was lower in the individuals who smoked more.
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Affiliation(s)
- Yuexi Li
- Health Management Center, Deyang People's Hospital, No. 173, Taishan North Road, Deyang City, Sichuan Province, China
| | - Xiaoqin Liu
- Health Management Center, Deyang People's Hospital, No. 173, Taishan North Road, Deyang City, Sichuan Province, China.
| | - Yuhan Luo
- Health Management Center, Deyang People's Hospital, No. 173, Taishan North Road, Deyang City, Sichuan Province, China
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Interaction of Alcohol Consumption and ABCG2 rs2231142 Variant Contributes to Hyperuricemia in a Taiwanese Population. J Pers Med 2021; 11:jpm11111158. [PMID: 34834509 PMCID: PMC8618280 DOI: 10.3390/jpm11111158] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/29/2021] [Accepted: 11/04/2021] [Indexed: 12/22/2022] Open
Abstract
Background: ABCG2 rs2231142 is an important genetic factor that contributes to the development of gout and hyperuricemia (HUA). Epidemiologic studies have demonstrated that lifestyle risk factors of HUA (e.g., alcohol consumption) and genetic predisposition (e.g., ABCG2 gene) together, contribute to enhanced serum uric acid levels. However, the interaction between ABCG2 rs2231142, alcohol consumption, and HUA in the Taiwanese population is still unclear. Therefore, this study investigated whether the risk of HUA is associated with ABCG2 rs2231142 variants and how this is affected by alcohol consumption. Method: study subjects were selected from the participants of the Taiwan Biobank database. Overall, 114,540 participants aged 30 to 70 years were enrolled in this study. The interaction between ABCG2 rs2231142, alcohol consumption, and serum uric acid (sUA) levels was analyzed by multiple logistic regression models. Results: the prevalence of HUA was 32.7% and 4.4 % in the male and female populations, respectively. In the whole study population, the minor T allele of ABCG2 rs2231142 was significantly associated with HUA risk, and the occurrence of HUA was high in TT genotype and TG genotype. The risk of HUA was significantly increased by the combined association of ABCG2 rs2231142 and alcohol consumption for TG/TT genotype compared to the GG genotype (wild-type genotype), especially among women. Conclusion: the ABCG2 rs2231142 is a crucial genetic locus for sUA levels in the Taiwanese population and our findings revealed that alcohol consumption combined with the ABCG2 rs2231142 risk allele contributes to increased HUA risk.
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Age difference in the combined effect of soda drinks consumption and body adiposity on hyperuricaemia in US adults. Public Health Nutr 2021; 24:5756-5768. [PMID: 33541468 DOI: 10.1017/s1368980021000513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To evaluate age-related differences in the independent/combined association of added sugar intake from soda and body adiposity with hyperuricaemia in gender-stratified US adults. DESIGN Consumption of added sugar from soda was calculated from 24-h dietary interviews and categorised into none, regular and excessive consumption. Hyperuricaemia was defined as serum uric acid levels >417 mmol/l in men and >357 mmol/l in women. Multiple regression models with interaction terms and logistic models adjusted for covariates were conducted under survey-data modules. SETTING National Health and Nutrition Examination Survey during 2007-2016. PARTICIPANTS 15 338 adults without gout, failing kidneys, an estimated glomerular filtration rate < 30 or diabetes were selected. RESULTS The age-stratified prevalence rate of hyperuricaemia was 18·8-20·4 % in males and 6·8-17·3 % in females. Hyperuricaemia prevalence of approximately 50 % was observed in young and middle age males who consumed excessive added sugar from soda. Excessive added sugar intake was observed to be associated with 1·5- to 2·0-fold and 2·0- to 2·3-fold increased risk of the probability of hyperuricaemia in young and middle age males and middle age females, respectively. Study participants, regardless of age or gender, who were obese and consumed excessive added sugar from soda had the highest risk of having hyperuricaemia. CONCLUSIONS Our study revealed that the association between hyperuricaemia and consumption of excessive added sugar from soda may vary by age and gender. Obese adults who consumed excessive added sugar from soda had the highest risk of hyperuricaemia, a finding that was found across all age-specific groups for both genders.
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Zitt E, Fischer A, Lhotta K, Concin H, Nagel G. Sex- and age-specific variations, temporal trends and metabolic determinants of serum uric acid concentrations in a large population-based Austrian cohort. Sci Rep 2020; 10:7578. [PMID: 32371883 PMCID: PMC7200724 DOI: 10.1038/s41598-020-64587-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 04/14/2020] [Indexed: 11/19/2022] Open
Abstract
Little is known about sex- and age-specific variations and temporal trends in serum uric acid (SUA) concentrations, the prevalence of hyperuricemia and its association with metabolic risk factors in the general population. Between January 1, 1985 and June 30, 2005 146,873 participants (42% women) were recruited. Prevalence of hyperuricemia was estimated applying a common (SUA > 360 µmol/L) and sex-specific cut-off points (women > 340 µmol/L, men > 420 µmol/L). At baseline, mean age was 41.2 years in men and 51.5 years in women, mean SUA concentration was 314.8 µmol/L and 243.6 µmol/L, respectively. Applying a common cut-off point, the prevalence of hyperuricemia was 18.5% in men and 4.4% in women and by sex-specific cut-off points it was 15.1% and 13.8%, respectively. SUA levels increased by 6.7 µmol/L per decade in men, but remained constant in women until the age of 50 years with a sharp increase by approximately 22 µmol/L per decade thereafter. In men and women, hyperuricemia was associated with obesity, hypertriglyceridemia and elevated gamma-glutamyl transferase. With increasing age SUA levels and the prevalence of hyperuricemia rise in a sex-specific manner. Above the age of 65 years, the sex-specific prevalence of hyperuricemia in women outreaches that in men.
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Affiliation(s)
- Emanuel Zitt
- Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT), Academic Teaching Hospital Feldkirch, Feldkirch, Austria.,Department of Internal Medicine III (Nephrology and Dialysis), Academic Teaching Hospital Feldkirch, Feldkirch, Austria.,Agency for Preventive and Social Medicine, Bregenz, Austria
| | - Anton Fischer
- Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT), Academic Teaching Hospital Feldkirch, Feldkirch, Austria.,Agency for Preventive and Social Medicine, Bregenz, Austria
| | - Karl Lhotta
- Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT), Academic Teaching Hospital Feldkirch, Feldkirch, Austria.,Department of Internal Medicine III (Nephrology and Dialysis), Academic Teaching Hospital Feldkirch, Feldkirch, Austria
| | - Hans Concin
- Agency for Preventive and Social Medicine, Bregenz, Austria
| | - Gabriele Nagel
- Agency for Preventive and Social Medicine, Bregenz, Austria. .,Institute for Epidemiology and Medical Biometry, Ulm University, Ulm, Germany.
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Serum Uric Acid Is Independently Associated with Coronary Calcification in an Asymptomatic Population. J Cardiovasc Transl Res 2018; 12:204-210. [PMID: 30414068 PMCID: PMC6611752 DOI: 10.1007/s12265-018-9843-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 10/24/2018] [Indexed: 12/16/2022]
Abstract
Detecting early-stage atherosclerosis is an important step towards cardiovascular disease prevention. Coronary artery calcium (CAC) score is a sensitive and non-invasive tool for detecting coronary atherosclerosis. Higher serum uric acid (SUA) levels are known to be associated with cardiovascular diseases. However, there is inconsistency regarding the independence of the association. The aim of our study was to assess the association of CAC and SUA in an asymptomatic population. CAC scans of 281 participants were analyzed in a voluntary screening program. A health questionnaire, physical examination, and laboratory tests were also performed. Participants with a history of cardiovascular disease were excluded from the analysis. 36.3% (n = 102) of the participants had no detectable CAC and 13.9% (n = 39) had a CAC score of > 300. SUA showed positive correlation with CAC score (0.175, p < 0.01). SUA was independently associated with Ca score > 300 (OR 5.17, p = 0.01) after the effects of conventional risk factors were eliminated.
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Mehmood A, Zhao L, Wang C, Nadeem M, Raza A, Ali N, Shah AA. Management of hyperuricemia through dietary polyphenols as a natural medicament: A comprehensive review. Crit Rev Food Sci Nutr 2017; 59:1433-1455. [PMID: 29278921 DOI: 10.1080/10408398.2017.1412939] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hyperuricemia, a condition due to high serum uric acid level and is notorious to health. It is considered to be a potent risk factor for gout and dramatically associated in the development of many chronic diseases such as malignant tumor, cardiovascular disorders and renal failure. Modern innovative medicinal and therapeutic interventions are underlying these days to combat hyperuricemia. Previously reported studies revealed the significant impact of dietary polyphenols (e.g. anthocyanins, phenolic acids, flavonoids etc.) against hyperurecemia disorder. Dietary plant polyphenols, unlike anti- hyperuricemic agents, are not reported to have any side effects in curing hyperuricemia. The current comprehensive review figure outs the use of dietary polyphenols as a natural remedy for the management of hyperuricemia. The sources, affiliated pathways, mode of actions and factors affecting their efficiency to prevent hyperuricemia are deeply discussed in this article. Additionally, limitations and suggestions regarding previously reported studies are also highlighted.
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Affiliation(s)
- Arshad Mehmood
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China.,c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
| | - Lei Zhao
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Chengtao Wang
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Muhammad Nadeem
- c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
| | - Ali Raza
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Nawazish Ali
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Amjad Abbas Shah
- c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
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Zeng M, Chen B, Qing Y, Xie W, Dang W, Zhao M, Zhou J. Estrogen receptor β signaling induces autophagy and downregulates Glut9 expression. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 33:455-65. [PMID: 24972010 DOI: 10.1080/15257770.2014.885045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Glut9 is highly expressed in the human kidney proximal convoluted tubular and plays a crucial role in the regulation of plasma urate levels. The gene effects were stronger among women. Our results show that 17-β-estradiol (E2) through ER (estrogen receptor) β downregulates Glut9 protein expression on human renal tubular epithelial cell line (HK2). Intriguingly, E2 does not affect the expression of Glut9 mRNA. ERβ is linked to PTEN, the PTEN gene negatively regulates the PI3K/AKT pathway, and the PI3K/AKT pathway inhibition may lead to autophagy. Further study indicates that ERβ may affect the expression of Glut9 though autophagy.
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Affiliation(s)
- Mei Zeng
- a Biology Group, North Sichuan Medical College
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Hyperuricaemia in the Pacific: why the elevated serum urate levels? Rheumatol Int 2013; 34:743-57. [PMID: 24378761 DOI: 10.1007/s00296-013-2922-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 12/13/2013] [Indexed: 12/22/2022]
Abstract
Pacific Island populations, particularly those of Polynesian descent, have a high prevalence of hyperuricaemia and gout. This is due to an inherently higher urate level among these populations with a demonstrated genetic predisposition. While an excess of urate can cause pathology, urate is also important for human health. It has been implicated as an antioxidant, has a neuroprotective role and is involved in innate immune responses. This paper provides a brief review of urate levels worldwide, with a particular focus on island Southeast Asia and the Pacific. We then present possible evolutionary explanations for the elevated serum urate levels among Pacific populations in the context of the physiological importance of urate and of the settlement history of the region. Finally, we propose that ancestry may play a significant role in hyperuricaemia in these populations and that exposure to malaria prior to population expansion into the wider Pacific may have driven genetic selection for variants contributing to high serum urate.
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Al-Meshaweh AF, Jafar Y, Asem M, Akanji AO. Determinants of blood uric acid levels in a dyslipidemic Arab population. Med Princ Pract 2012; 21:209-16. [PMID: 22095038 DOI: 10.1159/000333483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Accepted: 09/21/2011] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The objective of this study was to explore the relationships between circulating uric acid and lipid levels and components of the metabolic syndrome (MetS) in Arab dyslipidemic patients, a group already at high coronary artery disease risk. SUBJECTS AND METHODS The medical records of 1,229 subjects (632 men, 597 women) referred for treatment of dyslipidemia and followed up for at least 12 months were reviewed. Serum levels of uric acid and lipids (total cholesterol, triglycerides, low-density lipoprotein, high-density lipoprotein) and other variables in the National Cholesterol Education Program ATP III criteria definition of MetS were assessed at initial presentation and every 4- 6 months, under specific lipid-lowering treatment (statins and/or fibrates), in each of the subjects. Their respective associations were explored by appropriate logistic regression techniques with control for confounding risk factors, including age, gender and body mass index. RESULTS 306 subjects (24.9%) of the study population were hyperuricemic; they were more likely to be men, obese and diabetic. Also the serum uric acid level (mean ± SD) was greater in men with MetS compared with men without (377.0 ± 98.0 vs. 361.6 ± 83.1 μmol/l, p < 0.05), an observation not reproduced in women. Uric acid levels had significant associations with the presence of fasting hyperglycemia, hypertension and large waist circumference (WC) in men, but only with large WC in women. With statin treatment, uric acid levels decreased by 10% within 1 year of treatment; with fibrates, uric acid levels remained unchanged or slightly increased. CONCLUSION The data showed that hyperuricemia is common in dyslipidemic patients in Kuwait, where its important determinants are male sex, obesity, diabetes and statin treatment.
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Serum Urate as a Soluble Biomarker in Chronic Gout—Evidence that Serum Urate Fulfills the OMERACT Validation Criteria for Soluble Biomarkers. Semin Arthritis Rheum 2011; 40:483-500. [DOI: 10.1016/j.semarthrit.2010.09.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 09/23/2010] [Accepted: 09/24/2010] [Indexed: 02/07/2023]
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Hak AE, Curhan GC, Grodstein F, Choi HK. Menopause, postmenopausal hormone use and risk of incident gout. Ann Rheum Dis 2009; 69:1305-9. [PMID: 19592386 DOI: 10.1136/ard.2009.109884] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To prospectively study the relation between menopause, postmenopausal hormone use and risk of gout, since female sex hormones have been postulated to decrease gout risk among women. METHODS In the Nurses' Health Study, the association between menopause, age at menopause, postmenopausal hormone use and risk of self-reported physician-diagnosed incident gout among 92 535 women without gout at baseline was examined. Multivariate proportional hazards regression analysis was used to adjust for other risk factors for gout such as age, body mass index, diuretic use, hypertension, alcohol intake and dietary factors. RESULTS During 16 years of follow-up (1 240 231 person-years), 1703 incident gout cases were recorded. The incidence rate of gout increased from 0.6 per 1000 person-years in women <45 years of age to 2.5 in women > or =75 years of age (p for trend <0.001). Compared with premenopausal women, postmenopausal women had a higher risk of incident gout (multivariate-adjusted relative risk (RR)=1.26; 95% confidence interval (CI) 1.03 to 1.55). Among women with a natural menopause, women with age at menopause <45 years had a RR of 1.62 (95% CI 1.12 to 2.33) of gout compared with women with age at menopause 50-54 years. Postmenopausal hormone users had a reduced risk of gout (RR=0.82; 95% CI 0.70 to 0.96). CONCLUSION These prospective findings indicate that menopause increases the risk of gout, whereas postmenopausal hormone therapy modestly reduces gout risk.
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Affiliation(s)
- A Elisabeth Hak
- Section of Rheumatology and the Clinical Epidemiology Unit, Boston University of School of Medicine, 650 Albany Street, Suite 200, Boston, MA 02118, USA
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Hak AE, Choi HK. Menopause, postmenopausal hormone use and serum uric acid levels in US women--the Third National Health and Nutrition Examination Survey. Arthritis Res Ther 2008; 10:R116. [PMID: 18822120 PMCID: PMC2592803 DOI: 10.1186/ar2519] [Citation(s) in RCA: 222] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 08/13/2008] [Accepted: 09/26/2008] [Indexed: 11/29/2022] Open
Abstract
Introduction Despite the substantial prevalence of gout in the ageing female population, female hormonal influence has not been comprehensively examined. We evaluated and quantified the potential independent association between menopause, postmenopausal hormone use and serum uric acid levels in a nationally representative sample of women. Methods Using data from 7662 women aged 20 years and older in the Third National Health and Nutrition Examination Survey (1988 to 1994), we examined the relation between menopause, postmenopausal hormone use and serum uric acid levels. We used multivariate linear regression to adjust for other risk factors for hyperuricaemia such as dietary factors, age, adiposity, alcohol use, renal function, hypertension and diuretic use. Results Menopause was associated with higher serum uric acid levels. After adjusting for covariates, serum uric acid levels among women with natural menopause and surgical menopause were greater than premenopausal women by 0.34 mg/dl (95% confidence interval [CI], 0.19 to 0.49) and 0.36 mg/dl (95% CI, 0.14 to 0.57), respectively. Current postmenopausal hormone use was associated with a lower serum uric acid level among postmenopausal women (multivariate difference, 0.24 mg/dl [95% CI, 0.11 to 0.36]). The serum uric acid levels increased with increasing age categories (crude difference between 20 to 29 years and 70 years and over = 1.03 mg/dl, p for trend < 0.001), but this increase was not present after adjusting for other covariates (p for trend = 0.66). Conclusions These findings from a nationally representative sample of US women indicate that menopause is independently associated with higher serum uric acid levels, whereas postmenopausal hormone use is associated with lower uric acid levels among postmenopausal women. The age-associated increase in serum uric acid levels in women may be explained by menopause and other age-related factors.
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Affiliation(s)
- A Elisabeth Hak
- Department of Immunology, Erasmus MC University Medical Center, Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
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Abstract
After introduction of urate-lowering therapy, asympotomatic hyperuricemia was treated with allopurinol or uricosuric agents in the belief that hyperuricemia and/or gout caused chronic kidney disease. Epidemiologic studies in the 1970s, however, failed to confirm the view that hyperuricemia and gout were independent risk factors for chronic kidney disease. As a result, urate-lowering pharmacotherapy is generally not recommended at the present time in the management of asymptomatic hyperuricemia even though recent epidemiological, experimental, and clinical studies have prompted reexamination of a causal role for hyperuricemia (with or without gout) in chronic kidney disease as well as other important disorders including cardiovascular disease, hypertension, and metabolic syndrome. The issue of such a role remains unresolved and this article reviews the current status of the relationship between hyperuricemia and associated disorders.
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Affiliation(s)
- Michael A Becker
- Rheumatology Section, The University of Chicago Pritzker School of Medicine, Chicago, IL, USA.
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Abstract
The prevalence of gout in England was reported as having nearly doubled in the 1970s to about 3 per 1000, and it is possible that it has continued to increase. There may also have been some change in the level of prophylactic therapy compared with the 44.8% recorded in 1979. In this study, data were provided from their morbidity registers by 40 volunteer practices with a combined population of over 300,000 patients. Analyses of prevalence by age and sex, and of the extent of prophylaxis were made. The male:female ratio and the increase with age found were in line with earlier work, but overall prevalence was much higher at almost 10 per 1000. There was considerable inter-practice variation: 20% of this could be accounted for by the age and sex structure of the practice populations, but neither economic status nor broad geographical factors appeared to be significant, and it did not appear to be due to variation between practices in the level of special interest in gout. Prophylactic therapy--almost entirely allopurinol--was being prescribed for 48% of the sufferers; though practices varied widely in their propensity to give it, as a group the amount of allopurinol they used was close to the national average. The increase found in the prevalence of gout may be related to an increase in obesity in the population.
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Affiliation(s)
- C M Harris
- Prescribing Research Unit, Research School of Medicine, University of Leeds, U.K
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Adam RF, Loynes RD. The incidence of gout in patients with Dupuytren's disease. JOURNAL OF HAND SURGERY (EDINBURGH, SCOTLAND) 1992; 17:219-20. [PMID: 1588208 DOI: 10.1016/0266-7681(92)90094-i] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In a retrospective study we found that the incidence of gout in patients with Dupuytren's disease is 3.5%. The mean serum uric acid was 330 mumol/l. (5.5 mg./100 ml.) in men and 240 mumol./l. (4.0 mg./100 ml.) in women. The rate of hyperuricaemia was 7%. These are not significantly higher than the expected figures in Britain.
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Affiliation(s)
- R F Adam
- Stafford District General Hospital
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Buchanan WW. The City of Glasgow's first recorded disease: an acute attack of gout. Clin Rheumatol 1991; 10:94-5. [PMID: 2065517 DOI: 10.1007/bf02208042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Abstract
Gout is a clinical syndrome encompassing a group of metabolic diseases that are all characterized by abnormal uric acid metabolism. In its fullest form, gout is defined by: an increase in the serum urate concentration; characteristic, recurrent, acute arthritic attacks, with monosodium urate monohydrate crystals demonstrable in synovial fluid leukocytes; tophi, usually in and around joints of the extremities, composed of monosodium urate monohydrate deposits; renal disease, often accompanied by hypertension with glomerular, tubular, interstitial, and vascular involvement; and uric acid nephrolithiasis. Any combination of these manifestations may occur, although tophi and urate nephropathy rarely antedate gouty arthritis.
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Laskarzewski PM, Khoury P, Morrison JA, Kelly K, Glueck CJ. Familial hyper- and hypouricemias in random and hyperlipidemic recall cohorts: the Princeton School District Family Study. Metabolism 1983; 32:230-43. [PMID: 6827994 DOI: 10.1016/0026-0495(83)90187-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Using the Princeton School Family Study, our specific aim was to estimate the prevalence of familial hyper- and hypouricemia, to estimate the proportion of probands' first-degree relatives who were similarly affected, and to evaluate the contribution of diseases, drugs, and alcohol intake (if any) to uric acid levels. We studied 379 probands and a total of 1928 subjects, 125 and 52 black probands from a randomly recalled group, 147 white and 55 black probands from a hyperlipidemic recall (top decile cholesterol and/or triglyceride) group. Familial hyper- and hypouricemias were arbitrarily identified in those kindreds having at least two first-degree relatives in the same decile as the proband, top or bottom respectively, for serum uric acid. No probands had symptomatic gout. Diseases, drugs, and alcohol intake were not consistently associated with aggregations of high and/or low uric acid levels in families, and had little relationship to uric acid levels in individuals. Of the 177 randomly recalled probands, and of the 55 black probands in hyperlipidemic recall familial hyperuricemia, with concurrent primary hyperlipoproteinemia and hypertension. Familial hypouricemia was present in 1 of 125 white and in 1 of 52 randomly recalled black kindreds, and in 3 of 147 white and 3 of 55 hyperlipidemic recall black kindreds. While familial clustering of hyperuricemia was limited, clustering of hypouricemia was much more marked. Seventy-four and 84% respectively of first-degree relatives of hypouricemic white and black probands had uric acid less than the 50th percentile. In randomly recalled probands and their first-degree relatives there were significant inverse partial correlations between uric acid and high density lipoprotein cholesterol. Inverse associations of uric acid with high density lipoprotein cholesterol and the concurrence of hyperlipoproteinemia and hypertension in hyperuricemic families points to the importance of lipoprotein and blood pressure screening in families with asymptomatic hyperuricemia. The potential ramifications of within-family clustering of hypouricemia need to be further assessed in populations, particularly in regards to uric acid nephrolithiasis.
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Proceedings of a symposium on crystal-related arthropathies. 22 October and 23 October, 1982, Bristol Polytechnic, Bristol. Ann Rheum Dis 1983; 42 Suppl 1:1-114. [PMID: 6615023 PMCID: PMC1035029 DOI: 10.1136/ard.42.suppl_1.1-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Prior L. Epidemiology of Rheumatic disorders in the Pacific with particular emphasis on hyperuricaemia and gout. Semin Arthritis Rheum 1981; 11:213-29. [PMID: 6974401 DOI: 10.1016/0049-0172(81)90101-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Pritchard MH. Gout and pseudogout: crystal-induced arthropathies. CLINICS IN ENDOCRINOLOGY AND METABOLISM 1981; 10:141-61. [PMID: 7014045 DOI: 10.1016/s0300-595x(81)80042-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Park KS, Inouye E, Asaka A. Plasma and urine uric acid levels: heritability estimates and correlation with IQ. JINRUI IDENGAKU ZASSHI. THE JAPANESE JOURNAL OF HUMAN GENETICS 1980; 25:193-202. [PMID: 7194385 DOI: 10.1007/bf01997695] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Abstract
A study in gout of the incidence of diagnosis from 1971 to 1975 and of the prevalence at 31 December 1975 was carried out in a representative general practice sample comprising 64 practices and a population numbering 1 in 145 of the total population of Great Britain. The results show an annual incidence in Great Britain from 1971 to 1975 varying from 0.25 to 0.35 per 1000 and an overall prevalence at 31 December 1975 of 2.6 per 1000. The prevalence in England was found to be significantly greater than in the rest of Great Britain and that in Wales to be significantly greater than in Scotland. In 10% of the cases the gout was believed to be secondary, with induction by diuretics being the most frequent cause. The prevalence of primary gout was estimated to be 2.3 per 1000.
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Abstract
Results are reported from the first prospective study of gout in New Zealand Maoris based on a sample of 388 males and 378 females. At baseline, high mean levels of serum uric acid (SUA) were found, 0.422 +/- 0.092 mmol/1 (7.05 +/- 1.54 mg/100 ml) in males and 0.350 +/- 0.091 mmol/1 (5.85 +/- 1.52 mg/100 ml) in females. On the basis of traditional criteria (SUA above 0.42 mmol/1 (7.0 mg/100 ml) in males and above 0.36 mmol/1 (6.0 mg/100 ml) in females) the prevalence of hyperuricaemia was 49% in males and 42% in females. The baseline prevalence of gout (8.8% for males and 0.8% for females) and the subsequent 11-year incidence rates (10.3% for males and 4.3% for females) are discussed in relation to specified SUA classes. When traditional, sex-specific criteria for hyperuricaemia were used, no relationship was found between the prevalence of hyperuricaemia and the incidence of gout. There was, however, a sharp increase in the incidence rate of gout in both sexes when SUA levels were above 0.48 mmol/1 (8.0 mg/100 ml). In subjects with a baseline SUA above this level, the age-standardised 11-year incidence rate of gout was 29.1% for males and 37.2% for females. A previously unreported relationship linking muscle size to the incidence of gout in males is presented as a major finding of the study. Other risk factors associated with gout were body mass and blood pressure.
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Scott JT. New knowledge of the pathogenesis of gout. JOURNAL OF CLINICAL PATHOLOGY. SUPPLEMENT (ROYAL COLLEGE OF PATHOLOGISTS) 1978; 12:205-13. [PMID: 32192 PMCID: PMC1347140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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