ABSTRACT
BACKGROUND: The corpus callosum and related white matter projections have been implicated in major depressive disorder (MDD). Previously, we found a smaller genu in adolescents with MDD as compared to controls. To date, no study has examined the age of depression onset (adult vs. pediatric) as it relates to genu area in adults with MDD. METHODS: The area of the corpus callosum and its sub-regions were measured in 21 MDD subjects with pediatric age of onset (≤18 years) (29.48±7.62 years; 16 female, 5 male) and 31 MDD subjects with adult age of onset (≥19 years) (41.42±8.85; 17 female, 14 male) and 19 healthy controls (32.89± years 9.98; 11 female, 8 male) using magnetic resonance imaging (MRI). RESULTS: A difference in genu area was noted between groups (p=0.03), after co varying for age with post-hoc tests revealing that the difference was driven by the subjects with an MDD onset of pediatric age (p=0.035). No other sub-regions or total corpus callosum area demonstrated a significant difference. Genu area correlated with age in controls (p=0.02) but not in MDD patients (p=0.35). No significant correlation was found between the confound illness duration and genu area in MDD subjects with pediatric age of onset. LIMITATIONS: Confirmation and extension of our findings requires a larger sample size and usage of diffusion tensor imaging. CONCLUSIONS: Our findings provide additional evidence of abnormalities in the genu of the corpus callosum in early onset depression that persist into adulthood.
Subject(s)
Age of Onset , Corpus Callosum/pathology , Depressive Disorder, Major/pathology , Adolescent , Adult , Child , Female , Humans , Magnetic Resonance Imaging , Male , Middle Aged , Young AdultABSTRACT
An adaptive tetrazole-derived host provides insight into tetrazolate-biomolecule interactions, and is the first member of a new family of receptors that function in pure water.
Subject(s)
Tetrazoles/chemistry , Binding Sites , Magnetic Resonance Spectroscopy , Molecular Conformation , Molecular Structure , Tetrazoles/chemical synthesis , Water/chemistryABSTRACT
The quantitative exchange of a 4-(dimethylamino)pyridine ligand on the dimethyl-thio-phosphonium cation by Me3P demonstrates the coordinative nature of the N-P and P-P bond and diversifies a fundamentally important new direction in the coordination chemistry of phosphorus as an acceptor.
