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Effect of MitoQ on Platelet Function and Reactive Oxygen Species Generation in Patients With Sickle Cell Anemia

2019-10-04 08:31:36 | BioPortfolio

Summary

MitoQ is commercially available as a dietary supplement and it has been tested as a potential drug in other diseases, but it has never been tested in patients with sickle cell disease.

The goal of this research is to study if MitoQ, a molecule that works as an antioxidant by removing potentially damaging agents in a living organism, improves platelet function in patients with sickle cell disease (SCD).

Description

Antioxidant therapies targeted to specific enzymes or compartments may be beneficial in sickle cell anemia (SCA). MitoQ, the most extensively studied mitochondrial-targeted antioxidant, has been shown to be protective against ischemia/reperfusion injury in the heart, endothelial damage due to hypertension and ROS in animal models. MitoQ is commercially available as a dietary supplement to reduce overall oxidative stress and anti-ageing. However, MitoQ has not been tested either as a platelet antagonist or as an endothelial protectant in SCA patients. Investigators propose to conduct a small clinical trial of MitoQ in subjects with SCA to test the hypothesis that MitoQ scavenges platelet mtROS to prevent platelet activation and attenuate vascular dysfunction in SCA.

Investigators will test whether MitoQ decreases basal platelet activation in SCD patients and attenuates vascular dysfunction in subjects with SCA. Investigators will administer MitoQ orally to patients and healthy controls for 14 days. Investigators will obtain platelet count, hemolytic markers, platelet mtROS levels and activation markers, clinic BP measurements before and after MitoQ.

Adult male and female SCA subjects in steady state (n=10) and 5 healthy African-American volunteers will be recruited after obtaining informed consent.

Study Design

Conditions

Sickle Cell Disease

Intervention

MitoQ

Location

Magee Women's Hospital
Pittsburgh
Pennsylvania
United States
15213

Status

Not yet recruiting

Source

University of Pittsburgh

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-04T08:31:36-0400

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One of the sickle cell disorders characterized by the presence of both hemoglobin S and hemoglobin C. It is similar to, but less severe than sickle cell anemia.

An abnormal hemoglobin resulting from the substitution of valine for glutamic acid at position 6 of the beta chain of the globin moiety. The heterozygous state results in sickle cell trait, the homozygous in sickle cell anemia.

An acute purulent infection of the meninges and subarachnoid space caused by Streptococcus pneumoniae, most prevalent in children and adults over the age of 60. This illness may be associated with OTITIS MEDIA; MASTOIDITIS; SINUSITIS; RESPIRATORY TRACT INFECTIONS; sickle cell disease (ANEMIA, SICKLE CELL); skull fractures; and other disorders. Clinical manifestations include FEVER; HEADACHE; neck stiffness; and somnolence followed by SEIZURES; focal neurologic deficits (notably DEAFNESS); and COMA. (From Miller et al., Merritt's Textbook of Neurology, 9th ed, p111)

A disease characterized by chronic hemolytic anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for hemoglobin S.

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