Advertisement

Topics

Paraquat exposure increases oxidative stress within the dorsal striatum of male mice with a genetic deficiency in one-carbon metabolism.

07:00 EST 6th February 2019 | BioPortfolio

Summary of "Paraquat exposure increases oxidative stress within the dorsal striatum of male mice with a genetic deficiency in one-carbon metabolism."

Paraquat is a herbicide that is commonly used worldwide. Exposure to paraquat results in Parkinson's disease (PD)-like symptoms including dopaminergic cell loss. Nutrition has also been linked in the pathogenesis of PD, such as reduced levels of folic acid, a B-vitamin and component of one-carbon metabolism. Within one-carbon metabolism, methylenetetrahydrofolate reductase (MTHFR) catalyzes the irreversible conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate (5-methylTHF). A polymorphism in MTHFR (677 C&cenveo_unknown_entity_wingdings_F0E0;T) has been reported in 5-15% of North American and European human populations. The MTHFR polymorphism is also prevalent in PD patients. The goal of this study was to investigate the impact of paraquat-induced PD-like pathology in the context of reduced levels of MTHFR. Three-month-old male Mthfr+/- mice, which model the MTHFR polymorphism observed in humans, were administered intraperitoneal injections of paraquat (10mg/kg) or saline six times over three weeks. At the end of paraquat treatment, motor and memory function were assessed followed by collection of brain tissue for biochemical analysis. Mthfr+/- mice treated with paraquat showed impaired motor function. There was increased microglial activation within the substantia nigra (SN) of Mthfr+/- mice treated with paraquat. Additionally, all Mthfr+/- mice that were treated with paraquat showed increased oxidative stress within the dorsal striatum, but not the SN. The present results show that paraquat exposure increases PD-like pathology in mice deficient in one-carbon metabolism.

Affiliation

Journal Details

This article was published in the following journal.

Name: Toxicological sciences : an official journal of the Society of Toxicology
ISSN: 1096-0929
Pages:

Links

DeepDyve research library

PubMed Articles [13564 Associated PubMed Articles listed on BioPortfolio]

Homicidal Paraquat Poisoning.

Paraquat poisoning usually results from suicide, occupational, or accidental exposure. Herein, we report a rare fatal case of homicidal paraquat poisoning. A 58-year-old man was poisoned by taking par...

DJ-1 Suppresses Cytoplasmic TDP-43 Aggregation in Oxidative Stress-Induced Cell Injury.

DJ-1 (also called PARK7) is a multifunctional redox-sensitive protein that is protective against oxidative stress-induced cell death. TAR DNA-binding protein 43 (TDP-43) is a major protein component o...

The role of the dorsal striatum in choice impulsivity.

It has long been recognized that the dorsal striatum is an essential brain region for control of action selection based on action-outcome contingency learning, particularly when the available actions ...

Glucocorticoid interactions with the dorsal striatal endocannabinoid system in regulating inhibitory avoidance memory.

The endocannabinoid (eCB) system is highly stress sensitive and known to modulate memory formation of emotionally arousing experiences across different corticolimbic structures. eCB signaling within t...

Attenuation of Remifentanil-Induced Hyperalgesia by Betulinic Acid Associates with Inhibiting Oxidative Stress and Inflammation in Spinal Dorsal Horn.

Remifentanil-induced hyperalgesia (RIH) is known to be associated with oxidative stress and inflammation. Betulinic acid (BA) was reported to reduce visceral pain owing to its anti-oxidative and anti-...

Clinical Trials [5501 Associated Clinical Trials listed on BioPortfolio]

Oxidative Stress in OR Personnel

The purpose of this study is investigate to the effect(s) of chronic occupational exposure to N20 and volatile anesthetics on the extent of oxidative stress (DNA damage and the generation ...

Study of the Ability of Clarithromycin to Induce Oxidative Stress

The purpose of the study is to examine whether Klacid® (Clarithromycin) will induce oxidative stress (stress from oxygen) in healthy subjects. This is done by measuring the content of a p...

Oxidative Stress and Opiorphin in Temporomandibular Disorders

The objective of this study is to quantify salivary oxidative stress biomarkers in patients with temporomandibular disorders and to quantify recently isolated endogenous peptide opiorphin ...

Normal Values of Oxidative Stress, Taurine, and Related Markers

The role of oxidative stress in disease pathology is increasingly recognized. At present, the development of biomarkers of this state is in its infancy and the availability of clinically v...

Inspired Oxygen on Oxidative Stress and Breath Volatile Organic Compound Composition in Healthy Volunteers

High inspiratory oxygen fractions are known to induce oxidative stress and lipid peroxidation. The degrading products of oxidative stress induced lipid peroxidation are in part volatile an...

Medical and Biotech [MESH] Definitions

A disturbance in the prooxidant-antioxidant balance in favor of the former, leading to potential damage. Indicators of oxidative stress include damaged DNA bases, protein oxidation products, and lipid peroxidation products (Sies, Oxidative Stress, 1991, pxv-xvi).

A naturally occurring phenolic acid which is a carcinogenic inhibitor. It has also been shown to prevent paraquat-induced oxidative stress in rats. (From J Chromatogr A 1996;741(2):223-31; Biosci Biotechnol Biochem 1996;60(5):765-68).

The appearance of carbonyl groups (such as aldehyde or ketone groups) in PROTEINS as the result of several oxidative modification reactions. It is a standard marker for OXIDATIVE STRESS. Carbonylated proteins tend to be more hydrophobic and resistant to proteolysis.

A protein deglycase that repairs methylglyoxal- and glyoxal-glycated amino acids and proteins, releasing repaired proteins and lactate or glycolate. It deglycates CYSTEINE, ARGININE and LYSINE residues to reactivate proteins by reversing glycation and prevent the formation of ADVANCED GLYCATION END PRODUCTS. It protects cells against OXIDATIVE STRESS and CELL DEATH by functioning as an oxidative stress sensor and redox-sensitive MOLECULAR CHAPERONE and PROTEASE. Mutations in the PARK7 gene are associated with autosomal-recessive, early-onset PARKINSON DISEASE.

A direct-acting oxidative stress-inducing agent used to examine the effects of oxidant stress on Ca(2+)-dependent signal transduction in vascular endothelial cells. It is also used as a catalyst in polymerization reactions and to introduce peroxy groups into organic molecules.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Stress
Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic stress response to unexpected events is known as 'fight or flight'. Discovered by Walter Cannon in 1932, it is the release of h...

Parkinson's Disease
Parkinson's is a progressive neurological condition, affecting one person in every 500, 95% of which are over 40. It is caused by degeneration of more than 70% of the substantia nigra, which depletes the dopamine (the neurotransmitter involved in pro...


Searches Linking to this Article