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Dialogues Clin Neurosci. 1999 September; 1(2): 68–80.
PMCID: PMC3181568

Vascular depression: a new view of late-onset depression

La dépression vasculaire: une vouvelle approche de la dépression du sujet âgé

George S. Alexopoulos, MD*
George S. Alexopoulos, Weill Medical College of Cornell University, White Plains, NY, USA. Professor of Psychiatry, Director Cornell Institute of Geriatric Psychiatry;
Martha L. Bruce, PhD
Martha L. Bruce, Associate Professor of Sociology in Psychiatry;
David Silbersweig, MD
David Silbersweig, Associate Professor of Psychiatry and Neurology;
Balu Kalayam, MD
Balu Kalayam, Associate Professor of Clinical Psychiatry;


We have suggested that cerebrovascular disease may predispose, precipitate, or perpetuate some late-life depressive syndromes. The mechanisms of “vascular depression” include disruption of cortico-striato-pallido-thalamo-cortical (CSPTC) pathways or their modulating systems. This view is supported by the presentation of vascular depression, which consists of depressive symptoms, cognitive abnormalities, as well as neuroimaging findings that may result from CSPTC impairment. Moreover, clinical and electrophysiological evidence of CSPTC impairment, an abnormality frequently found in patients with vascular depression, appears to be associated with poor response to antidepressant treatment and early relapse and recurrence. The vascular depression hypothesis provides the conceptual background for studies that may have clinical and theoretical impact. Agents influencing dopamine, acetylcholine, and opioid neurotransmitters may be studied in vascular depression, since these are essential neurotransmitters of the frontostriatal circuitry. Drugs used for prevention and treatment of cerebrovascular disease may be shown to reduce the risk for vascular depression or improve its outcomes. The choice of antidepressants in vascular depression may depend on their effect on neurological recovery from ischemic lesions. Finally, identification of specific relationships between specific symptoms, cognitive deficits, and disability may lead to interventions that target the patients' deficits as well as their interactions with psychosocial factors known to contribute to depression. Research can clarify the pathways to vascular depression by focusing on the site of lesion, the resultant brain dysfunction, the presentation of depression and time of onset, and the contribution of nonbiological factors.

Keywords: vascular depression, treatment resistance, recovery from ischemia, disability


Nous avons suggéré que les maladies cérébrovasculaires favorisent, accélèrent ou perpétuent certains syndromes dépressifs du sujet âgé. Les mécanismes de la «dépression vasculaire» incluent une interruption des voies cortico-striato-pallido-ihalumo-corticales (CSPTC) ou de leurs systèmes régulateurs. Ce point de vue est étayé par le tableau de cette forme de dépression qui combine des symptômes dépressifs, des troubles cognitifs et des données obtenues en imagerie cérébrale, lesquelles résulteraient des altérations des voies CSPTC. En outre, les altérations cliniques et électrophysiologiques reflétant un dysfonctionnement des voies CSPTC sont fréquemment retrouvées chez les patients souffrant de dépression vasculaire et sont associées à une réponse pauvre aux traitements antidépresseurs, à des rechutes précoces et à des récidives. L'hypothèse de la dépression vasculaire constitue une base conceptuelle pour des études qui peuvent avoir un impact clinique et théorique. Les agents qui influent sur certains neurotransmetteurs comme la dopamine, l'acétylcholine et les opioïdes peuvent être étudiés dans celle dépression, car ceux-ci jouent un rôle essentiel dans le circuit frontostriatal. Les médicaments utilisés dans la prévention et le traitement des maladies cérébrovasculaires pourraient avoir un effet démontré sur le risque de dépression vasculaire ou améliorer son pronostic. Le choix d'antidépresseurs adaptés à ce syndrome peut dépendre de leur effet sur la récupération neurologique qui succède aux lésions de nature ischémique. Au bout du compte, la mise en évidence de relations spécifiques entre les symptômes caractéristiques, les troubles cognitifs et le handicap pourrait déboucher sur des interventions visant à la fois les déficits et leurs interactions avec les facteurs psychosociaux qui contribuent a la dépression. La recherche peut clarifier les voies impliquées dans la dépression vasculaire en se focalisant sur le site des lésions, le dysfonctionnement cérébral qui en résulte et la présentation de la dépression au moment où elle s'installe, sans oublier la contribution des facteurs non biologiques.

The National Institutes of Health (NIH) Consensus Development Conference noted that depression is one of the most frequent psychiatric disorders of old age, with a prevalence of 1 % for major depression, 2% for dysthymia, and 8% to 15% for clinically significant depressive symptoms.1 Over 50% of hospitalized depressed elderly patients are in their first episode.2 Epidemiological studies have shown that the majority of individuals suffering from major depression or dysthymia have no history of previous psychiatric treatment.3

Earlier we suggested that late-onset depression is a heterogeneous syndrome, which, among others, encompasses patients with brain disorders that may or may not be clinically evident when the depression first appears.4 Late-onset dépressives have more cognitive5,6 and neuroradiological abnormalities,7-9 greater disability,10 medical morbidity and mortality,11,12 and lower familial prevalence of mood disorders than elderly early-onset dépressives,11 although some disagreement exists.14-16

Studies of late-onset depression arc confounded by: (i) difficulties in identification of age of onset17; and (ii) the assumption that depressive episodes have the same etiology over time, although some patients may experience episodes with different causes at different periods of their lives. Nevertheless, research on late-onset depression has provided a conceptual step for identifying more homogeneous groups of geriatric depression. Depression occurring in the context of vascular disease may account for many geriatric depression cases with rather homogeneous etiology.

Recently, we hypothesized that cerebrovascular disease can predispose, precipitate, or perpetuate a depressive syndrome in some elderly patients. We selected the term “vascular depression”18 because it is broad and encompasses depressive syndromes with diverse vascular pathogenesis. Direct testing of the vascular depression hypothesis is not possible since there is no biological test that can function as a validating criterion. However, the vascular depression hypothesis can generate studies of the outcomes, pathogenesis, and treatment of a large subgroup of geriatric dépressives. We present below findings relevant to the vascular depression hypothesis and discuss their clinical and theoretical value.

Clinical studies

Depression and cerebrovascular disease often coexist. An early longitudinal study observed that cerebrovascular disease occurring 2 to 3 years prior to psychiatric admission may have contributed to the development of geriatric depression.19 Post and Schulman noted a high incidence of cerebrovascular disease in elderly depressed patients and suggested that the resultant brain damage predisposes to late-life depression.20

Patients with vascular diseases often have depression. In a sample of 15 186 patients treated in a primary care setting, we observed that those with significant depressive symptomatology had a higher frequency of vascula disease than nondepressed patients. Approximately 8% of depressed patients had hypertension, 9% had ischemic heart disease, 13% had peripheral vascular disease, 7% had stroke, and 9% had heart failure.21 The corresponding percentages for nondepressed patients were 4%, 4%, 4%, 5%, and 4%, respectively. In a prospectively followed population of 248 patients who underwent coronary artery bypass, 43% had significant depressive symptomatology prior to surgery.22 Similar findings have been reported by others who observed that patients with hypertension,23 coronary artery disease,24 and vascular dementia25 often develop depression. Patients with vascular dementia have more retardation, depression, and anxiety than Alzheimer's patients with similar cognitive impairment.22 Unlike Alzheimer's disease, vascular dementia is a subcortical dementia. Therefore, these findings raise the question whether damage of subcortical structures by vascular lesions contributes to depression.

Ischemic brain lesions in geriatric depression

In a series of elegant studies, Robinson and Starkstein26 and other investigators27-29 demonstrated that depression is a frequent complication of stroke. Stroke with neurological symptoms and signs occurs in a relatively small number of geriatric dépressives. However, “silent stroke” without neurological signs is frequent in elderly depressed populations. In a Japanese sample, silent cerebral infarction was found in 83% of major dépressives older than 65 years.30 Silent cerebral infarction was observed in 94% of patients with onset of first depressive episode after 65 years of age. While this investigation did not include normal controls, other studies suggest that silent cerebral infarction occurs in 17% of healthy individuals in their fifties and 21 % of individuals in their sixties.31 A study of Caucasian populations found that silent stroke occurs in 23% of individuals older than 65 years; in 72% of them the lesions exceeded 3 mm in diameter.32 These findings suggest that vascular brain lesions can be found in a significant number of elderly patients with late-onset depression.

Elderly dépressives, and especially late-onset dépressives, have white matter (WMHs) more frequently than nondepressed individuals.33-37 WMHs correspond to areas of arteriolar ectasia, enlargement of perivascular spaces, and myelin pallor associated with arteriosclerotic changes of perforating arteries.38 In asymptomatic individuals, WMHs were found to be associated with extracranial carotid artery disease, reduced cerebral blood flow, and a history of hypertension, diabetes, cardiac disease.39 Not all WMHs are due to vascular disease. However, geriatric depressed patients without cerebrovascular risk factors were found to have similar degree of WMHs to nondepressed controls.40 The temporal relationship between the formation of WMHs and development of depression has not been systematically investigated. However, in one case, depression developed following a large increase in WMHs.41

We used transcranial sonography to compare cerebral blood flow velocity between elderly patients with major depression and normal elderly controls.42 Depressed patients had reduced blood flow velocity in the middle, anterior, and posterior cerebral artery (Figure 1). Blood flow velocity was strongly correlated with overall cognitive dysfunction, but the strongest correlations were those with initiation/perseveration scores of the Mattis Dementia Rating Scale.43

Figure 1.
Blood flow velocity In the middle cerebral artery in an 82 -year-old patient with major depression (left) and a 79-year-old psychiatrically normal subject (right). Blood flow velocity was measured with transcranial sonography.

Lesions in the basal ganglia are associated with depression. Approximately 40% to 75% of depressed elderly patients have lesions of the thalamus and basal ganglia,36 while only 5% of normal elderly controls have such lesions, and their lesions are smaller than the lesions of elderly dépressives.

The clinical presentation of vascular depression

Vascular disease contributes to cognitive impairment. The incidence of dementia 1 year after the first cerebral infarct was found to be 9 times greater than expected.44 Lacunar infarcts in the basal ganglia, thalamus, and deep white matter, but not cortical infarcts, appear to be associated with high prevalence of dementia in Alzheimer's patients.45

Declining cognitive performance, perhaps due to unrecognized vascular disease, was found to be a stroke risk factor.46 WMHs were correlated with impaired attention, mental speed, and executive functions47-50 in nondepressed subjects.

Late-onset dépressives with vascular risk factors were reported to have greater cognitive impairment than elderly patients with early-onset depression without vascular risk factors.18,51 Executive functions were most affected. In vascular dementia, a subcortical syndrome frequently associated with depression, the extent of WMHs correlated with cognitive impairment.52 In cortical or basal ganglia stroke, cognitive impairment was associated with high incidence and increased severity of depression.26 These findings suggest that cerebrovascular lesions lead to depression and cognitive impairment through related mechanisms.

Patients with late-onset major depression and vascular risk factors or ischemic brain lesions appear to have more psychomotor retardation, apathy, and lack of insight, and less agitation and guilt than geriatric patients with early-onset depression without vascular risk factors.42,53 Moreover, patients with vascular depression have greater impairment in frontal functions and more disability.18 Identification of relationships among specific symptoms, lesion location, and overall damaged tissue can provide information about the pathogenesis of vascular depression.

Localization of lesions

The clinical presentation of vascular depression suggests that damage of subcortical structures and their connections to some frontal lobe structures are the contributing pathophysiological abnormality. This view is further supported by the observation that subcortical dementing disorders, including vascular dementia, Parkinson's disease, and Huntington's disease, are more likely to result in depression than cortical dementias.54 In contrast, patients with Alzheimer's disease develop depression less frequently and have less severe depressive syndromes than patients with subcortical dementias.55 Moreover, development of depression is more likely to occur in Alzheimer's patients with subcortical atrophy.56

The pathogenetic role of subcortical lesions in depression is supported by studies of stroke. Stroke of the caudate head is the most likely to result in depression, while thalamic stroke has a rather low incidence of depression.57 Most depressed patients with silent cerebral infarction have lesions in the perforating arteries territory.30 Similarly, WMHs of elderly dépressives are most prominent in subcortical and frontal areas.34-36 Reduced size of the head of the caudate58 and putamen59 has been observed in ncurologically unimpaired depressed patients.

Lesions of the left hemisphere often result in depression.26 Depression may occur after right hemisphere stroke,60,61 despite difficulties in the recognition of depression due to anosognosia. Depressed mood is infrequent in right-sided stroke, but vegetative signs and abnormal dexamethasone suppression test are equally frequent in left and right stroke.60 In left hemisphere stroke, anterior lesions were associated with depression more often than posterior lesions.26 A more complex lesion-location relationship was observed in right stroke. Immediately after right stroke, depression was more severe in patients with posterior lesions,62 while the severity of depression occurring within 3 to 6 months after right stroke was associated with anterior lesions.62,63 These observations suggest that poststroke depression is mediated by different mechanisms, especially in patients with right hemisphere lesions.

The pathogenetic contribution of the basal ganglia and their prefrontal connections is supported by functional neuroimaging studies. Most functional neuroimaging studies of major depression observed hypoactivity in frontal regions,64-66 including the dorsolateral, inferior and medial/anterior cingulate, and the caudate nucleus,67,68 but disagreement exists.69

Prefrontal and limbic dysfunction in depression has been suggested by positron emission tomography (PET) activation studies of younger adults. Intravenous administration of procaine can induce emotional experiences associated with increased blood flow in the anterior temporal lobes, inferior frontal lobes, and anterior cingulate gyri in normal subjects.70 However, minimal activation of these regions was noted in dépressives who have the same experiences as the normal subjects.70

Left prefrontal areas may participate in the development of sad mood. Transient sadness increases the activity of the left anterolateral prefrontal cortex,71 left anterior cingulate, left medial frontal cortex, and left anterior limbic system.72 The relationship of these findings to depression is unclear. However, they suggest that the left prefrontal system and its connections to limbic areas mediate some aspects of depressive symptomatology.

We used high-sensitivity H2 15O PET with an activation task to probe frontotemporal function in elderly patients with severe major depression (Hamilton Depression Rating Scale >30) and elderly controls.73 Each session included 4 scans during a paced word generation condition with phonemic cues, and 4 scans in a paced letter repetition sensorimotor control state. Group differences in brain activity were identified with statistical parametric mapping according to the general linear model at each voxel. Brain activity during word generation (activation vs control states) was decreased bilaterally in the dorsal anterior cingulate (P<0.001) and the hippocampal areas in depressed elderly patients compared to controls (Figure 2). These findings suggest that the striatofrontal circuitry and its connections to the hippocampus may be the neural substrates of some of the cognitive and psychomotor symptoms and signs of geriatric depression.

Figure 2.
Decreased activity in bilateral hippocampi (a) and bilateral anterior cingulate gyri (b), in geriatric patients with major depression vs control subjects using a word generation paradigm, as detected with highsensitivity H2 15O positron emission tomography ...

Some aspects of the depressive syndrome are associated with rather specific functional brain abnormalities in younger dépressives. Psychomotor slowing was found to be correlated with decreased flow in the left anterolateral cortex, while cognitive impairment correlated with decreased activity in the left medial prefrontal area.74 Anxiety occurring in the context of depression was associated with increased activity in the right posterior cingulate and bilateral inferior parietal areas.75 These observations suggest that distinctive depressive syndromes may result from vascular lesions that disrupt specific prefrontal-subcortical circuits.

Three cortico-striatopallido-thalamo-corti cal (CSPTC) pathways may be relevant to depression.76,77 Damage of the orbitofrontal circuit may lead to disinhibition, irritability, and diminished sensitivity to social cues.76 Damage of the anterior cingulate may result in apathy and reduced initiative.76 Damage of the dorsolateral circuit may result in difficulties in set shifting, learning, and word list generation.76 These behavioral abnormalities resemble in part the depressive syndrome.

Treatment response in vascular depression

Several studies suggest that vascular depression may have a poor outcome. Late-onset depression, an entity that often occurs in the context of vascular disease, is a rather chronic disorder.78 In elderly dépressives, leukoencephalopathy was found to be associated with low quantitative electroencephalogram (qEEG) coherence79,80; low qEEG coherence predicted failure to recover, residual depressive symptomatology, increased mortality, and disability.79,80

We studied the relationship of clinical, neuropsychological, and electrophysiological measures of prefrontal dysfunction with treatment response in elderly patients with major depression.81 Abnormal initiation/perseveration scores of the Dementia Rating Scale, psychomotor retardation, and long P300 latency of the auditory evoked potential predicted 58% of the variance in change of depression scores from baseline to 6 weeks. Depressed patients who remained symptomatic had more abnormal initiation/perseveration scores and longer P300 latency compared with depressed patients who achieved remission and control subjects. There were no differences between the last two groups. These findings suggest that prefrontal dysfunction is associated with poor or delayed antidepressant response in depressed elderly patients. Although not very specific, abnormal initiation/perseveration scores, psychomotor retardation, and long P300 latency are thought to reflect striatofrontal impairment, an abnormality often caused by vascular disease.82 We are currently conducting a study of average evoked responses following the Stroop response inhibition test. The Stroop requires integrity of the anterior cingulate and thus is more specific to frontal dysfunction than our earlier tests. Preliminary findings suggest that, compared with controls, depressed elderly patients overrecruit prefrontal neurons during the response inhibition task (Figure 3). Further research will examine whether this abnormality is associated with poor réponse to antidepressants.

Figure 3.
Increased frontal activation in a 73-year-old patient with major depression (top) compared with a 70-year-old psychiatrically normal subject (bottom). Evoked responses were recorded following the Stroop Color interference task. À total of 162 ...

In another study, we investigated the relationship of executive and memory impairment to relapse, recurrence, and the course of residual depressive symptoms and signs after remission of geriatric major depression.83 The subjects of this study, after remission of depression, received continuation treatment with nortriptyline at plasma levels 60 to 150 ng/rriL for 16 weeks and were then randomly assigned to cither nortriptyline maintenance therapy or placebo for a period of up to 2 years. Abnormal initiation/perseveration scores, but not memory impairment, were associated with relapse (Figure 4) and recurrence (Figure 5) of geriatric depression and with fluctuations of depressive symptomatology in the whole group and in subjects who never met criteria for relapse or recurrence during the follow-up period. Memory impairment, disability, medical burden, social support, and history of previous episodes did not significantly influence the outcome of depression in this sample. These findings provide the rationale for studies of the role of specific prefrontal pathways in predisposing or perpetuating depressive syndromes or symptoms in the elderly Abnormal initiation/perseveration scores reflect striatofrontal dysfunction, an abnormality associated with vascular depression. While direct studies are needed, these findings suggest that vascular depression has a chronic and relapsing course.

Figure 4.
Cox proportional hazard analysis of 57 elderly patients who had recovered from major depression and received continuation treatment with nortriptyline at plasma levels of 60 to150 ng/mL Seven patients had a relapse during continuation phase. Fitted survival ...
Figure 5.
Cox proportional hazard analysis of 43 elderly patients who had recovered from major depression, completed a 16-week continuation treatment with nortriptyline at plasma levels of 60-150 ng/mL and were randomly assigned to nortriptyline (NT) or placebo ...

Mechanisms of vascular depression

Two broad hypotheses can be tested regarding localization of lesions in vascular depression. The first hypothesis is that small lesions disrupting critical pathways may precipitate vascular depression. This hypothesis is supported by stroke studies showing that lacunar infarcts of the left caudate head or the left frontal pole often lead to depression.26 The direct lesion-depression pathway may account for vascular depression cases that develop after stroke.

The second hypothesis is that accumulation of lesions exceeding a threshold predisposes to depression. This hypothesis is most applicable to patients with neurologically silent lesions or an old stroke. The threshold concept is supported by the observation that a total area of WMHs exceeding 10 cm2 may result in impaired attention and executive skills.82 Similar impairments have been noted in late-onset depression with vascular risk factors.84-87 Vascular lesions may damage glutaminergic fibers from cortical areas to the striatum, or the GABAergic neurons of the limbic-basal ganglia circuits and alter the input to cortex.88 Since these systems are ”redundant,“ depressive symptoms may appear if the overall damage exceeds a critical level and leads in increased inhibitory CSPTC input. Another mechanism may involve damage of catecholamine neurons by white matter lesions at the pons, resulting in reduction of stress responses.74 A third mechanism postulates disruption of control exerted by the orbitofrontal cortex on the serotoninergic raphe nuclei.89 We have reported that dépressives with vascular risk factors have greater dysfunction in auditory transmission at the pons than geriatric dépressives without vascular risk factors or elderly normal controls.90 These putative mechanisms suggest that lesions at various sites may result in depression through direct disruption of the CSPTC circuits or their modulating systems.

The “threshold hypothesis” postulates vulnerability that may be conferred by the lesions themselves or by a broader cerebrovascular disturbance that compromises pathways relevant to depression. Nonbiological factors may be required to trigger depression in predisposed patients. Depression developing 3 months after stroke was found to be predicted by impairment in activities of daily living, while depression occurring 12 months after stroke was predicted by social isolation.91 Other studies have shown that reverse occipital asymmetry (right larger than left), absence of ven triculomegaly, and absence of family history of mood disorders are associated with lower frequency of poststroke depression.26 Studies of outcomes of patients with vascular disease or risk factors can identify biological and nonbiological mechanisms that mediate or protect against depression.

Prevention of vascular depression

The vascular depression hypothesis provides the conceptual background for primary prevention of geriatric depression by modifying risk factors for cerebrovascular disease. Hypertension is a significant risk factor for stroke.97-94 Treatment of hypertension95 and hypercholesterolemia96 reduces cerebrovascular morbidity and mortality. Warfarin and aspirin reduce the risk of stroke in patients with atrial fibrillation.97 Ticlopidine,98 aspirin,98,99 and dipyridamole99 may prevent future stroke in patients with transient ischemic attacks or ischemic stroke. Studies are needed to ascertain whether antihypertensive, anticholestcrolemic, and antiplatelet agents alter the course of vascular depression. Antiplatelet agents may prove to be effective in preventing further vascular damage occurring during depressive episodes, when the serotonin-mediated thrombogenic platelet response is enhanced. 100,101 In addition, longitudinal studies of patients with vascular depression can evaluate the efficacy of these agents in improving the course of illness. Drugs that reduce damage after stroke may be relevant to vascular depression. These include thrombolytic agents, calcium-and sodium-channel antagonists, N-methyl-D-aspartate (NMDA) receptor antagonists, glutamate synthesis inhibitors, glutamate release inhibitors, y-aminobutyric acid (GABA) antagonists, gangliocides, aminosteroids, antioxidants, growth factors, and antiapoptotic agents.102 The role of these drugs in the prevention and treatment of vascular depression can be examined in patients with ischemic events participating in acute intervention and secondary prevention trials.

Treatment of vascular depression

Psychotropic drugs used in depressed elderly patients may influence recovery from ischemic lesions. Animal studies suggest that the dopamine receptor blocker haloperidol, the α1-adrenergic receptor antagonists trazodone and amitriptyline, the ;2-adrenergic receptor clonidine, and GABA agonists such as diazepam and phenytoin interfere with motor recovery after ischemic lesions.102-104 In contrast, amphetamine, desipramine, the dopamine agonist bromocriptine, and the ;2-adrenergic receptor antagonists yohimbine and idazoxan may be beneficial to recovery from ischemic injury.102-104 A clinical study has observed that fluoxetine may facilitate and maprotiline may hinder recovery in poststroke hémiplégie patients undergoing rehabilitation.105 Studies may examine which psychotropic agents influence the incidence of poststroke depression or alter the course of vascular depression, and identify antidepressants suitable for prophylaxis of vascular depression.

The presence of subcortical abnormalities and their adverse impact on the treatment response and the longterm outcome of vascular depression provide the rationale for studies of agents that influence the neurotransmitter systems of frontostriatal circuitry. Further research may determine the efficacy of drugs acting on the dopamine, acetylcholine, and opiate systems of prefrontal pathways in patients with vascular depression.

We have observed a relationship between disability and abnormal scores of initiation/perseveration and psychomotor retardation,10 abnormalities that frequently occur in vascular depression. Disability is also associated with anxiety and depressive ideation in depressed elderly patients.10 Cognitive behavioral therapy combined with rehabilitation approaches have been found to reduce depression and improve quality of life.106 Such interventions may be useful in disabled patients with vascular depression provided that they are individualized and address the cognitive deficits of these patients.


Clinical and neuroimaging studies suggest that cerebrovascular disease may predispose, initiate, or perpetuate late -life depression, perhaps by compromising the integrity or regulation of CSPTC systems. The heuristic value of the vascular depression hypothesis is that it provides the background for studies of mechanisms of depression. Lesions at specific locations may promote, have no effect, or even protect patients from depression. The lesion burden concept may be relevant to some cases of vascular depression. Structural and functional imaging and electrophysiological techniques can quantify specific lesions and total lesion burden and study the functional changes associated with lesions.

The clinical significance of the vascular depression concept is that it can lead to new pharmacological and psychosocial prevention and treatment models. Drugs used in the prevention and treatment of cerebrovascular disease may be studied for their ability to reduce the risk for depression in patients with vascular risk factors or reduce chronicity, recurrence, cognitive impairment, and disability in vascular depression. The long-term efficacy of specific antidepressants can be investigated in depressed patients at risk for new vascular lesions, since basic research suggests that some antidepressants, and not others, promote recover}' after ischemic brain lesions. Finally, the efficacy of agents influencing dopamine, acetylcholine, and opioid neurotransmitters may be studied in vascular depression, since these neurotransmitters mediate the function of the CSPTC pathways, which are often compromised in vascular depression.

Studies of affective symptoms and cognitive deficits and their relationship to short-term and long-term outcomes of vascular depression can identify pathophysiologically meaningful abnormalities. I .inking a cognitive abnormality to a specific outcome of depression suggests that this abnormality is relevant to the mechanisms of the depressive disorder. Since some cognitive dysfunctions have known functional imaging correlates, it may prove feasible to use simple-to-administer neuropsychological tests and identify the role of specific functional abnormalities on the course of vascular depression. Finally, identification of specific relationships between symptoms, cognitive deficits, and disability may lead to sharply focused interventions that take into consideration the interaction of the patients' deficits with psychosocial factors that contribute to depression.


This work was supported by NIMH grants R01 MH42819, ROI MH51842, P30 MH49762, T32 MH19132, and the Sanchez Foundation


1. Diagnosis and treatment of depression in late life NIH Consensus Conference. JAMA. 1992;268:1018–1024. [PubMed]
2. Meyers BS., Alexopoulos GS. Geriatric depression. Med Clin North Am. 1988;72:847–866. [PubMed]
3. Blazer D., Williams CD. Epidemiology of dysphoria and depression in an elderly population. Am J Psychiatry. 1980;137:439–444. [PubMed]
4. Alexopoulos GS., Meyers BS., Young RC., Charlson M., Silversweig D. The clinical presentation of “vascular depression.” New Research Section, American Psychiatric Association, Annual Meeting, New York. 1996
5. Alexopoulos GS., Young RC., Meyers BS. Geriatric depression: age of onset and dementia. Biol Psychiatry. 1993;34:141–145. [PubMed]
6. Alexopoulos GS., Meyers BS., Young RC., Mattis S., Kakuma T. The course of geriatric depression with “reversible dementia.” Am J Psychiatry. 1993;150:1693–1699. [PubMed]
7. Alexopoulos GS., Young RC., Shindledecker R. Brain computed tomography in geriatric depression and primary degenerative dementia. Biol Psychiatry. 1992;31:591–599. [PubMed]
8. Jacoby RJ., Levy R. Computed tomography in the elderly. 3. Affective disorder. Br J Psychiatry. 1980;136:270–275. [PubMed]
9. Coffee CE., Figiel GS., Djang WT., Cress M., Saunders WB., Weiner RD. Leukoencephalopathy in elderly depressed patients referred for ECT. Biol Psychiatry. 1988;24:143–161. [PubMed]
10. Alexopoulos GS., Vrontou C., Kakuma T., et al. Disability in geriatric depression. Am J Psychiatry. 1996;153:877–885. [PubMed]
11. Roth M., Kay DWK. Affective disorders arising in the senium, (ii) physical disability as an etiological factor. J Ment Sci. 1956;102:141–150. [PubMed]
12. Jacoby RJ., Levy R., Bird JM. Computed tomography and the outcome of affective disorder: a follow-up study of elderly subjects. Br J Psychiatry. 1981;139:288–292. [PubMed]
13. Baron M., Mendlewicz J., Klotz J. Age-of-onset and genetic transmission in affective disorders. Acta Psychiatr Scand. 1981;64:373–380. [PubMed]
14. Conwell Y., Nelson JC., Kim KM., Majure CM. Depression in late life: age of onset as marker of a subtype. J Affect Disord. 1989;17:189–195. [PubMed]
15. Greenwald BS., Kramer-Ginsberg E. Age of onset in geriatric depression: relationship to clinical variables. J Affect Disord. 1988;15:61–68. [PubMed]
16. Herrmann N., Lieff S., Silberfeld M. The effect of age of onset on depression in the elderly. J Geriatr Psychiatry Neurol. 1989;2:182–187. [PubMed]
17. Wiener P., Alexopoulos GS., Kakuma T., Meyers BS., Rosendhal E., Chester J. The limits of history taking in geriatric depression. Am J Geriatr Psychiatry. 1997;5:116–125. [PubMed]
18. Alexopoulos GS., Meyers BS., Young RC., Kakuma T., Sibersweig D., Charlson M. Clinically defined vascular depression. Am J Psychiatry. 1997;154:562–565. [PubMed]
19. Post F. The Significance of Affective Disorders in Old Age. London, Oxford: Institute of Psychiatry, Maudsley Monograph 10. 1962
20. Post F., Schulman K. New views on old age affective disorder. In: Aire T, ed. Recent Advances in Psychogehatrics. New York, NY: Churchill Livingstone; 1985:119–140.
21. Luber MP., Alexopoulos GS., Hollenberg J., Charlson ME., Callahan M. Recognition, treatment, comorbidity and resource utilization of depressed patients in a general medical practice. Annual Meeting of the Society of General Internal Medicine. 1996 [PubMed]
22. Peterson JC., Williams-Russo PG., Charlson ME., Meyers BS. Longitudinal course of new-onset depression after cardiac bypass surgery. Tenth Annual International Conference on Mental Health Problems in the General Health Care Sector. USA: NIMH. 1996
23. Rabkin JG., Charles E., Kass F. Hypertension and DSM-III depression in psychiatric outpatients. Am J Psychiatry. 1983;140:1072–1074. [PubMed]
24. Carney RM., Rich WM., Tevelde A., Saini J., Clark K., Jaffe AS. Major depressive disorder in coronary artery disease. Am J Cardiol. 1987;60:1273–1275. [PubMed]
25. Sulzer DL., Levin HS., Mahler ME., High WM., Cummings JL. A comparison of psychiatric symptoms in vascular dementia and Alzheimer's disease. Am J Psychiatry. 1993;150:1806–1812. [PubMed]
26. Starkstein SE., Robinson RG. Depression in cerebrovascular disease. In: Starkstein SE, Robinson RG, eds. Depression in Neurological Disease. Baltimore, Md: The Johns Hopkins University Press. 1993:28–49.
27. Folstein MF., Maiberger R., McHugh PR. Mood disorders as a specific complication of stroke. J Neurol Neurosurg Psychiatry. 1971;40:1018–1020. [PMC free article] [PubMed]
28. Ebrahim S., Barer K., Nouri F. Affective illness after stroke. Br J Psychiatry. 1987;154:170–182.
29. Mendez MF., Adams NL., Lewandoski KS. Neurobehavioral changes associated with caudate lesions. Neurology. 1989;39:349–354. [PubMed]
30. Fujikawa T., Yamawaki S., Touhouda Y. Incidence of silent cerebral infarction in patients with major depression. Stroke. 1993;24:1631–1634. [PubMed]
31. Kobayashi S., Koide H., Yamashita K., Bokura H., Yamaguchi S. Subjective symptoms and silent brain infarction-like lesions. Jpn J Stroke. 1993;15:189–195.
32. Ryan RN., Manolio TA., Schertz LD., et al. A method of using MR to evaluate the effects of cardiovascular disease on the brain: the Cardiovascular Health Study. Am J Neuroradiol. 1994;15:1625–1633. [PubMed]
33. Krishnan KRR., Goli V., Ellinwood EH., France RD., Blazer DZ., Nemeroff CB. Leukoencephalopathy in patients diagnosed as major depressive. Biol Psychiatry. 1988;23:519–522. [PubMed]
34. Coffey CE., Figiel, GS, Djang WT., Cross M., Saunders WB., Weiner RD. Leukoencephalopathy in elderly depressed patients referred for ECT. Biol Psychiatry. 1988;23:519–522. [PubMed]
35. Coffey CE., Figiel, GS., Djang WT., Saunders WB., Weiner RD. White matter hyperintensity on MRI clinical and neuroanatomic correlates in the depressed elderly. J Neuropsychiatry Clin Neurosci. 1989;1:135–144. [PubMed]
36. Coffey CE., Figiel FS., Djang WT., Weiner RD. Subcortical hyperintensity on MRI: a comparison of normal and depressed elderly subjects. Am J Psychiatry. 1990;147:187–189. [PubMed]
37. Coffey CE., Wilkinson WE., Weiner RD., et al. Quantitative cerebral anatomy in depression: a controlled magnetic resonance imaging study. Arch Gen Psychiatry. 1993;50:7–16. [PubMed]
38. Braffman BH., Zimmerman RA., Trojanowski JQ., Gonatas NK., Hickey WF., Schlaepler WW. Brain MR: pathologic correlation with gross and histopathology. 2. Hyperintense white-matter foci in the elderly. Am J Neuroradioi. 1988;9:629–636. [PubMed]
39. Fazekas F., Niederkorn K., Schmidt R., et al. White matter signal abnormalities in normal individuals: correlation with carotid ultrasonography, cerebral blood flow, measurements, and cerebrovascular risk factors. Stroke. 1988;19:1285–1288. [PubMed]
40. Miller DS., Kumar A., Yousem DM., Gottlieb GL. MRI high intensity signals in late-life depression and Alzheimer's disease: a comparison of subjects without major vascular risk factors. Am J Geriatr Psychiatry. 1994;2:332–337.
41. Lesser IM., Hill-Gutierrez E., Miller BL., Boone KB. Late-onset depression with white matter lesions. Psychosomatics. 1993;34:364–367. [PubMed]
42. Alexopoulos GS. Prefrontal dysfunction in vascular depression. Annual Meeting of the American Association for Geriatric Psychiatry. New Orleans, La: NIMH. 1999
43. Mattis S. Dementia Rating Scale. Odessa, FL: Psychological Assessment Resources. 1989
44. Kokmen E., Whisnant JP., O'Fallon WM., Chu CP., Beard CM. Dementia after ischemic stroke: a population study in Rochester, Minnesota (19601984). Neurology. 1996;19:154–159. [PubMed]
45. Snowdon DA., Greiner LH., Mortimer JA., Riley KP., Greiner PA., Markesbery WR. Brain infarction and the clinical expression of Alzheimer's disease. JAMA. 1997;277:813–817. [PubMed]
46. Ferruzzi L., Guralnik JM., Salive ME., et al. Cognitive impairment and risk of stroke in the older population. J Am Geriatr Soc. 1996;44:237–241. [PubMed]
47. Åstrom MG., Thompson RF., Hendrie HC., et al. Foci of increased T2 signal intensity in MR images of healthy elderly subjects: a follow-up study. J Am. Geriatr Soc. 1990;38:1131–1138. [PubMed]
48. Harell LE., Duvall E., Folks DG., et al. The relationships of high-intensity signals on magnetic resonance images to cognitive and psychiatric state in Alzheimer's disease. Arch Neurol. 1991;48:1136–1140. [PubMed]
49. Van Swieten JC., Geyskes GG., Derix MMA., et al. Hypertension in the elderly is associated with white matter lesions and cognitive decline. Ann Neurol. 1991;30:825–830. [PubMed]
50. Ylikoski R., Ylikoski A., Erkinjuntti T., Sulkava R., Raininko R., Tilvis R. White matter changes in healthy elderly persons correlate with attention and speed of mental processing. Arch Neurol. 1993;50:818–824. [PubMed]
51. Lesser IM., Hill-Gutierrez E., Miller RL., Boone KB. Late-onset depression with white matter lesions. Psychosomatics. 1993;34:364–367. [PubMed]
52. Meyers JS., Kawamura J., Terayama Y. White matter lesions in the elderly. J Neurol Sci. 1992;110:1–7. [PubMed]
53. Krishnan KRR., Hays JC., Blazer DG. MRI-def ined vascular depression. Am J Psychiatry. 1997;154:497–500. [PubMed]
54. Sobin C., Sacheim HA. Psychomotor symptoms of depression. Am J Psychiatry. 1997;154:4–17. [PubMed]
55. Reichman WE., Coyne AC. Depressive symptoms in Alzheimer's disease and multi-infarct dementia. J Geriatr Psychiatry Neurol. 1995;8:96–99. [PubMed]
56. Starkstein SE., Migliorelli R., Teson A., et al. Prevalence and clinical correlates of pathological affective display in Alzheimer's disease. J Neurol Neurosurg Psychiatry. 1995;59:55–60. [PMC free article] [PubMed]
57. Starkstein SE., Robinson RG., Berthier ML., Parikh RM., Price TR. Differential mood changes following basal ganglia vs thalamic lesions. Arch Neurol. 1988;45:725–730. [PubMed]
58. Krishnan KRR., McDonald WM., Escalona PR., et al. Magnetic resonance imaging of the caudate nuclei in depression. Arch Gen Psychiatry. 1992;49:553–557. [PubMed]
59. Husain MM., McDonald WM., Doraiswamy PM., et al. A magnetic resonance imaging study of putamen nuclei in major depression. Psychiatry Res Neuroimaging. 1991;40:95–99. [PubMed]
60. Finkelstein SP., Benowitz LI., Baldessarini RJ., et al. Mood, vegetative disturbance, and dexamethasone suppression after stroke. Ann Neurol. 1982;12:463–468. [PubMed]
61. Starkstein SE., Robinson RG., Honig MA., Parikh RM., Joselyn J., Price TR. Mood changes after right hemisphere lesions. Br J Psychiatry. 1989;155:79–85. [PubMed]
62. Robinson RG., Starr LB., Lipsey JR. Rao K, Price TR. A two-year longitudinal study of post-stroke mood disorders: dynamic changes in associated variables over the first six months of follow-up. Stroke. 1984;15:510–516. [PubMed]
63. House A., Dennis M., Warlow C., Hawton K., Molyneux A. Mood disorders after stroke and their relation to lesion location. A CT scan study. Brain. 1990;113:1113–1130. [PubMed]
64. Baxter LR Jr., Schwartz JM., Phelps ME., et al. Reduction of prefrontal cortex glucose metabolism common to three types of depression. Arch Gen Psychiatry. 1989;46:243–250. [PubMed]
65. Bench CJ., Friston KJ., Brown RG., Scott LC., Frackowiak RS., Dolan RJ. The anatomy of melancholia. Focal abnormalities of cerebral blood flow in major depression. Psychol Med. 1992;22:607–615. [PubMed]
66. Mayberg HS. Frontal lobe dysfunction in secondary depression. J Neuropsychiatry Clin Neurosci. 1994;6:428–442. [PubMed]
67. Hagman JO., Buchsbaum MS., Wu JC., Rao SJ., Reynolds CA., Blinder BJ. Comparison of regional cerebral brain metabolism in bulimia nervosa and affective disorder assessed with positron emission tomography. J Affect Disord. 1990;19:153–163. [PubMed]
68. Mayberg HS., Jeffery PJ., Wagner HN., Simpson SG. Regional cerebral blood flow in patients with refractory unipolar depression measured with Tc-99m HMPAO SPECT. J Nucl Med. 1991;32(suppl):951.
69. Drevets WC., Videen TO., Price JL., Preskorn SH., Carmichael ST., Raichle ME. A functional anatomical study of unipolar depression. J Neurosci. 1992;12:3628–3641. [PubMed]
70. Ketter TA., Andreason PJ., George MS., Marangell LM., Pazzaglia PJ., Post RM. Reduced resting frontal lobe CBF in mood disorders. Am Psychiatr Assoc Annu Meeting 1993; Abstract.
71. Pardo JV., Pardo PJ., Ratchle ME. Neural correlates of self-induced dysphoria. Am J Psychiatry. 1993;150:13–19. [PubMed]
72. George MS., Ketter TA., Parekh PI., Horwitz B., Herscovitch P., Post RM. Brain activity during transient sadness and happiness in healthy women. Am J Psychiatry. 1995;152:341–351. [PubMed]
73. de Asis L., Silbersweig D., Alexopoulos GS., et al. Decreased hippocampal activation in geriatric depression. Society of Biological Psychiatry Annual Meeting, Washington, DC: Society of Biological Psychiatry. 1999
74. Dolan RJ., Bench CJ., Brown RG., Scott LC., Friston KJ., Frackowiak RSJ. Regional cerebral blood flow abnormalities in depressed patients with cognitive impairment. J Neurol Neurosurg Psychiatry. 1992;55:768–773. [PMC free article] [PubMed]
75. Bench CJ., Friston KJ., Brown RG., Scott LC., Frackowiak RSJ., Dolan RJ. The anatomy of melancholia - focal abnormalities of cerebreal blood flow in major depression. Psychol Med. 1992;22:607–615. [PubMed]
76. George MS., Ketter TA., Post RM. Prefrontal cortex dysfunction in clinical depression. Depression. 1994;2:59–72.
77. Alexander GE., DeLong MR., Strick PL. Parallel organization of functionally segregated circuits linking basal ganglia and cortex. Ann Rev Neurosci. 1986;9:357–381. [PubMed]
78. Alexopoulos GS., Meyers BS., Young RC., et al. Recovery in geriatric depression. Arch Gen Psychiatry. 1996;53:305–312. [PubMed]
79. Leuchter AF., Dunkin JJ., Lufkin RB., Anzai Y., Cook IA., Newton TF. Effect of white matter disease on functional connections in the aging brain. J Neurol Neurosurg Psychiatry. 1994;57:1347–1354. [PMC free article] [PubMed]
80. Leuchter A., Simon SL., Daly KA., et al. Quantitative EEG correlates of outcome in older psychiatric patients. Part II: Two-year follow-up of patients with depression. Am J Geriatr Psychiatry. 1994;2:290–299.
81. Kalayam B., Alexopoulos GS. Prefrontal dysfunction and treatment response in geriatric depression. Arch Gen Psychiatry. 1999;56:713–718. [PubMed]
82. Boone KB., Miller BL., Lesser IM., et al. Neuropsychological correlates of white matter lesions in healthy elderly subjects. Arch Neurol. 1992;49:549–554. [PubMed]
83. Alexopoulos GS. The Subtypes of Deriatric Depression. Kona, Hawaii: ACNP. 1997
84. Zubenko GS., Sullivan P., Nelson JP. Brain imaging abnormalities in mental disorders of late life. Arch Neurol. 1990;47:1107–1113. [PubMed]
85. Figiel GS., Krishnan KRR., Rao VP., et al. Subcortical hyperintensities on brain magnetic resonance imaging: a comparison between late age onset and early onset elderly depressed subjects. Neurobioi Aging. 1991;26:245–247. [PubMed]
86. Churchill CM., Priolo CV., Nemeroff CB., Krishnan KRR., Breitner JCS. Occult subcortical magnetic resonance imaging in elderly dépressives. Int J Geriatr Psychiatry. 1991;6:213–214.
87. Krishnan KRR., McDonald WM., Doraiswamy PM., et al. Neuroanatomical substrates of depression in the elderly. Eur Arch Psychiatry Clin Neurosci. 1993;243:41–46. [PubMed]
88. Krishnan KRR., McDonald WM. Arteriosclerotic depression. Med. Hypotheses. 1995;44:111–115. [PubMed]
89. Mayberg HS., Solomon DH. Depression in Parkinson's disease: a biochemical and organic viewpoint. Adv Neurol. 1995;65:49–60. [PubMed]
90. Kalayam B., Alexopoulos GS., Young RC., Silbersweig DA., Musiek FE. Latelife depression, vascular diseases, and brainstem evoked response abnormalities. New Research Section, American Psychiatric Association, Annual Meeting, New York. 1996
91. Åstrom M., Adolfsson >R., Asplund K. Major depression in stroke patients. A 3 year longitudinal study. Stroke. 1993;24:976–982. [PubMed]
92. Kannel WB., Wolf PA., Verier J., McNamara PM. Epidemiologic assessment of the role of blood pressure in stroke: the Framingham Study. JAMA. 1996;276:1269–1278. [PubMed]
93. Lindenstrom E., Boysen G., Nyboe J. Influence of systolic and diastolic blood pressure on stroke risk: a prospective observational study. Am J Epidemiol. 1995;142:1279–1290. [PubMed]
94. Kannel WB. Cardioprotection and antihypertensive therapy: the key importance of addressing the associated coronary risk factors (the Framingham experience). Am J Cardiol. 1996;77:6B–11B. [PubMed]
95. Whisnant JP. Effectiveness versus efficacy of treatment of hypertension for stroke prevention. Neurology. 1996;46:301–307. [PubMed]
96. Gotto AM Jr. Assessing the benefits of lipid-lowering therapy. Am J Cardiol. 1998;82:2M–4M. [PubMed]
97. Stroke Prevention in Atrial Fibrillation Investigators. Warfarin versus aspirin for prevention of thromboembolism in atrial fibrillation: Stroke Prevention in Atrial Fibrillation Study II. Lancet. 1994;343: 687–691. [PubMed]
98. Bellavance A. Efficacy of ticlopidine and aspirin for prevention of reversible cerebrovascular ischemic events. The Ticlopidine Aspirin Stroke study. Stroke. 1993;24:1452–1457. [PubMed]
99. Sivenius J., Riekkinen PJ., Laasko M., Smets P., Lowenthal A. European Stroke Prevention Study: antithrombotic therapy is also effective in the elderly. Acta Neurol Scand. 1993;87:111–114. [PubMed]
100. Kusumi I., Koyama A., Yamashita I. Serotonin-stimulated Ca2' response is increased in the blood platelets of depressed patients. Biol Psychiatry. 1991;30:310–312. [PubMed]
101. Mikuni K., Kagaya A., Takahashi K., Meltzer HY. Serotonin but not norepinephrine-induced calcium mobilization of platelets is enhanced in affective disorders. Psychopharmacology. 1992;106:311–314. [PubMed]
102. Goldstein L. Pharmacologic modulation of recovery after stroke: clinical data. J Neurol Rehabil. 1991;5:129–140.
103. Goldstein LB. Basic and clinical studies of pharmacologic effects on recovery from brain injury. J Neural Transplant Plast. 1993;3:175–192. [PMC free article] [PubMed]
104. Goldstein LB and the Sygen in Acute Stroke Study Investigators. Common drugs may influence motor recovery after stroke. Neurology. 1995;45:865–871. [PubMed]
105. Dam M., Tonin P., De Boni A., et al. Effects of fluoxetine and maprotiline on functional recovery in poststroke hémiplégie patients undergoing rehabilitation therapy. Stroke. 1996;27:1211–1214. [PubMed]
106. Klausner EJ., Clarkin J., Spielman L., Pupo C., Abrams R., Alexopoulos GS. Late life depression and functional disability. The role of goal-focused group psychotherapy. Int J Geriatr Psychiatry. 1998;13:707–716. [PubMed]

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