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Study M878

Study name

Ryan KM 2020a

Title

Blood plasma B vitamins in depression and the therapeutic response to electroconvulsive therapy

Overall design

The aim of this study was to investigate B vitamin plasma concentrations in medicated patients with depression (n = 94) compared to age- and sex-matched healthy controls (control group, n = 57), and in patients with depression after electroconvulsive therapy (ECT) in a real-world clinical setting. The depression group included patients with unipolar depression (unipolar depression group, n = 73) and bipolar depression (bipolar depression group, n = 21). ECT was administered twice-weekly with hand-held electrodes. LC/MS was used to quantify circulating concentrations of thiamine (vitamin B1), thiamine monophosphate (vitamin B1 metabolite), riboflavin (vitamin B2), flavin mononucleotide (vitamin B2 metabolite), nicotinamide (vitamin B3), N1-methylnicotinamide (vitamin B3 metabolite), pyridoxal 50-phosphate (vitamin B6), pyridoxal (vitamin B6), and 4-pyridoxic acid (vitamin B6 catabolite).

Study Type

Type1;

Type2;

Data available

Unavailable

Organism

Human;

Categories of depression

Depressive disorder; Depression; Depression;

Criteria for depression

DSM-IV diagnosed MDD, HAMD-24 >= 21

Sample size

130

Tissue

Peripheral; Blood; Plasma;

Platform

MS-based; LC-MS: not reported;

PMID

34589848

DOI

10.1016/j.bbih.2020.100063

Citation

Ryan KM, Allers KA, Harkin A, et al. Blood plasma B vitamins in depression and the therapeutic response to electroconvulsive therapy. Brain Behav Immun Health. 2020 Mar 28;4:100063.

Metabolite

Niacinamide;

1-Methylnicotinamide;

Pyridoxal 5'-phosphate;

Flavin mononucleotide;