Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

作者： Vidhya Kumar1, Henry Chang1, David A. Reiter2, David P. Bradley3, Martha Belury4, Shana E. McCormack5, Subha V. Raman1 1Davis Heart and Lung Research Institute,The Ohio State University, 2Laboratory of Clinical Investigation,National Institute on Aging, 3Division of Endocrinology, Diabetes and Metabolism,The Ohio State University, 4Department of Human Sciences, Human Nutrition,The Ohio State University, 5Division of Endocrinology and Diabetes, Department of Pediatrics,University of Pennsylvania

简介：

Overview

This work demonstrates the feasibility of an in vivo phosphorus-31 magnetic resonance spectroscopy (31 PMRS) technique to quantify mitochondrial oxidative phosphorylation (OXPHOS) capacity in human skeletal muscle. This standardized technique allows for noninvasive measurement, facilitating the development of targeted therapies.

Key Study Components

Area of Science

• Neuroscience
• Biology
• Magnetic Resonance Spectroscopy

Background

• Mitochondrial oxidative phosphorylation is crucial for energy production in skeletal muscle.
• Current methods for measuring OXPHOS capacity are often invasive.
• In Vivo phosphorus-31 magnetic resonance spectroscopy offers a noninvasive alternative.
• This technique is well tolerated across various functional capabilities.

Purpose of Study

• To establish a robust and standardized method for measuring mitochondrial OXPHOS capacity.
• To facilitate the development of therapies aimed at improving OXPHOS capacity.
• To provide a noninvasive approach for serial investigations in human subjects.

Methods Used

• In Vivo phosphorus-31 magnetic resonance spectroscopy.
• Standardized exercise protocol for subjects.
• Technical setup and subject positioning for optimal results.
• Informed consent and MRI safety screening prior to imaging.

Main Results

• The technique successfully quantifies mitochondrial OXPHOS capacity.
• It demonstrates feasibility for use in diverse populations.
• Noninvasive nature allows for repeated measurements over time.
• Standardization improves reliability and applicability of results.

Conclusions

• The in vivo PMRS technique is a promising tool for assessing mitochondrial function.
• It can aid in the development of targeted therapies for metabolic disorders.
• Future studies can expand its application in clinical settings.

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