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Journal ArticleDOI

Role of mercury toxicity in hypertension, cardiovascular disease, and stroke

Mark C. Houston
- 01 Aug 2011 - 
- Vol. 13, Iss: 8, pp 621-627
TLDR
This poster presents a probabilistic procedure to assess the importance of baseline IgE levels in the decision-making process and shows clear patterns in response to known immune-inflammatory events.
Abstract
Mercury has a high affinity for sulfhydryl groups, inactivating numerous enzymatic reactions, amino acids, and sulfur-containing antioxidants (N-acetyl-L-cysteine, alpha-lipoic acid, L-glutathione), with subsequent decreased oxidant defense and increased oxidative stress. Mercury binds to metallothionein and substitute for zinc, copper, and other trace metals, reducing the effectiveness of metalloenzymes. Mercury induces mitochondrial dysfunction with reduction in adenosine triphosphate, depletion of glutathione, and increased lipid peroxidation. Increased oxidative stress and reduced oxidative defense are common. Selenium and fish containing omega-3 fatty acids antagonize mercury toxicity. The overall vascular effects of mercury include increased oxidative stress and inflammation, reduced oxidative defense, thrombosis, vascular smooth muscle dysfunction, endothelial dysfunction, dyslipidemia, and immune and mitochondrial dysfunction. The clinical consequences of mercury toxicity include hypertension, coronary heart disease, myocardial infarction, cardiac arrhythmias, reduced heart rate variability, increased carotid intima-media thickness and carotid artery obstruction, cerebrovascular accident, generalized atherosclerosis, and renal dysfunction, insufficiency, and proteinuria. Pathological, biochemical, and functional medicine correlations are significant and logical. Mercury diminishes the protective effect of fish and omega-3 fatty acids. Mercury inactivates catecholaminei-0-methyl transferase, which increases serum and urinary epinephrine, norepinephrine, and dopamine. This effect will increase blood pressure and may be a clinical clue to mercury-induced heavy metal toxicity. Mercury toxicity should be evaluated in any patient with hypertension, coronary heart disease, cerebral vascular disease, cerebrovascular accident, or other vascular disease. Specific testing for acute and chronic toxicity and total body burden using hair, toenail, urine, and serum should be performed.

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Journal ArticleDOI

Dietary and blood selenium are inversely associated with the prevalence of stroke among Inuit in Canada.

TL;DR: Blood and dietary selenium are reversely associated with the prevalence of stroke in Inuit, which follows an L-shaped relationship.
Journal ArticleDOI

Mercury leads to features of polycystic ovary syndrome in rats.

TL;DR: Rats exposed to Hg displayed abnormal estrous cyclicity and ovarian follicular development, with a reduction in ovarian antral follicles and an increase in atretic and cystic ovarian follicles, suggesting that Hg exposure led to abnormal reproductive and metabolic features similar to those found in the polycystic ovary syndrome (PCOS) rat models.
Journal ArticleDOI

Mixtures modeling identifies heavy metals and pyrethroid insecticide metabolites associated with obesity.

TL;DR: In this paper, the association between chemical mixtures and obesity was examined using linear regression models, including Weighted Quantile Sum (WQS) regression, quantile g-computation (qgcomp), and Bayesian kernel machine regression (BKMR).
Journal ArticleDOI

Circulating Selenium Concentration Is Inversely Associated With the Prevalence of Stroke: Results From the Canadian Health Measures Survey and the National Health and Nutrition Examination Survey.

TL;DR: It is observed that inverse cross‐sectional associations between whole blood Se and the prevalence of stroke in representative samples of the Canadian and the US population are consistent across different selenium biomarkers.
Journal ArticleDOI

Cadmium, lead, and mercury mixtures interact with non-alcoholic fatty liver diseases.

TL;DR: In this paper , the impact of three common heavy metals on liver enzymes and NAFLD markers in a Korean adult population was investigated using a variety of statistical approaches, including WQS, qgcomp, and BKMR.
References
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Journal ArticleDOI

Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial

Roberto Marchioli
- 07 Aug 1999 - 
TL;DR: Dietary supplementation with n-3 PUFA led to a clinically important and statistically significant benefit and vitamin E had no benefit and its effects on fatal cardiovascular events require further exploration.
Journal ArticleDOI

Environmental Health Criteria

Journal ArticleDOI

Effects of changes in fat, fish, and fibre intakes on death and myocardial reinfarction: diet and reinfarction trial (dart)

TL;DR: A modest intake of fatty fish (two or three portions per week) may reduce mortality in men who have recovered from MI.
Journal Article

The Environmental Protection Agency

TL;DR: A case study explores the background of the digitization project, the practices implemented, and the critiques of the project, which aims to provide access to a plethora of information to EPA employees, scientists, and researchers.
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