Regional cerebral blood flow abnormalities in late‐life depression:Relation to refractoriness and chronification

Psychiatry and Clinical Neurosciences - Tập 52 Số 1 - Trang 97-105 - 1998
Shuichi Awata1, Hiroshi Itoh, Michiko Konno, Shuichi Ono, Ryuta Kawashima, Hiroshi Fukuda, M Sato
1Department of Psychiatry, Tohoku University School of Medicine, Sendai, Japan

Tóm tắt

Abstract We examined patterns of regional cerebral blood flow (rCBF) abnormalities in 18 patients with major depressive disorder in late life using single photon emission computed tomography (SPECT) and (99mTc‐hexamethyl‐propylenamine oxime (99mTc‐HMPAO). Compared with 13 age‐matched controls, relative rCBF was significantly decreased bilaterally in the anterior cingulate gyrus, the prefrontal cortex, the temporal cortex, the parietal cortex, the hippocampus and the caudate nucleus. However, it was not correlated with the severity of depression or global cognitive dysfunction. In 10 patients with a prolonged depressive episode or prolonged residual symptoms (the refractory subgroup), robust and extensive decreases in rCBF were found compared with controls and the rCBF decreased significantly in the anterior cingulate gyrus and the prefrontal cortex compared with that in the non‐refractory subgroup. In the non‐refractory subgroup, rCBF decreased significandy in the caudate nucleus and tended to decrease in the anterior cingulate gyrus compared with controls. These findings indicate that dysfunction of the limbic system, the cerebral association cortex and the caudate nucleus may be implicated in late‐life depression and that robust and extensive hypoperfusion, especially in the anterior cingulate and the prefrontal regions, may relate to refractoriness or chronification of depression.

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Psychiatry and Clinical Neurosciences

Tập 52 Số 1

97-105

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