BACKGROUND: Evidence is accumulating that mitochondrial dysfunction is involved in the pathophysiology of bipolar disorder and schizophrenia. Cerebrospinal fluid (CSF) concentration of lactate, a product of extra-mitochondrial glucose metabolism, is commonly elevated in individuals with mitochondrial disorders, especially those with neuropsychiatric symptoms.
We tested the hypothesis…
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Acute tryptophan depletion attenuates auditory event related potentials in bipol…
BACKGROUND: 5-HT modulates electroencephalographic (EEG) activity, which is abnormal in bipolar disorder and EEG abnormalities persist in euthymic bipolar patients. The EEG may therefore be a sensitive marker of 5-HT function in bipolar disorder. We examined the effects of acute tryptophan depletion (ATD) on EEG activity in bipolar patients.
METHODS: Fourteen patients with DSM IV Bip… |
NMR chemistry analysis of red blood cell constituents in normal subjects and lit…
Red blood cells from 18 lithium carbonate-treated patients with bipolar affective disorder and 12 normal volunteers were analyzed using 1H-nuclear magnetic resonance (NMR) spectroscopy. The spectra were analyzed for alanine, adenosine triphosphate (ATP), choline, 2,3-diphosphoglycerol, glucose, glutathione, glycine, and lactate.
Significant elevations of choline and lactate were foun… |
Mitochondrial dysfunction in bipolar disorder: evidence from magnetic resonance …
Magnetic resonance spectroscopy (MRS) affords a noninvasive window on in vivo brain chemistry and, as such, provides a unique opportunity to gain insight into the biochemical pathology of bipolar disorder. Studies utilizing proton ((1)H) MRS have identified changes in cerebral concentrations of N-acetyl aspartate, glutamate/glutamine, choline-containing compounds, myo-inositol, and lactate in bipo…
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Mitochondrial dysfunction in bipolar disorder
Phosphorus magnetic resonance spectroscopic studies in bipolar disorder revealed altered brain energy metabolism resembling that of chronic progressive external ophthalmoplegia (CPEO).
Mood disorder is one characteristic symptom in several families of CPEO caused by mutations of three genes, ANT1, Twinkle, and POLG. Molecular genetic analysis revealed association of bipolar disorder … |
Gray matter lactate and Glx elevations in medication-free BD patients
BACKGROUND: Bipolar disorder (BD) has substantial morbidity and incompletely understood neurobiological underpinnings.
OBJECTIVE: To investigate brain chemistry in medication-free individuals with BD. DESIGN: Two-dimensional proton echo-planar spectroscopic imaging (PEPSI) (32 x 32, 1-cm(3) voxel matrix) acquired axially through the cingulate gyrus was used to quantify … |
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