Immune reaction links disease progression in cancer patients with depression.

Abstract:

:Mood disturbances and depression are supposed to have a negative impact on patients' outcome in malignant tumour disease. On the other hand, poor prognosis in cancer patients is associated with chronic immune challenge which is paralleled by enhanced degradation of the essential amino acid tryptophan and thus decreased plasma tryptophan concentrations. Because tryptophan is precursor for the biosynthesis of the neurotransmitter serotonin (= 5-hydroxytryptamine, 5HT), low tryptophan concentrations will lead to decreased availability of serotonin which finally increases the susceptibility for the development of mood disturbances and depression in the patients. Thus, the development of depression in cancer patients may result from chronic cellular immune stimulation. In conclusion, a more aggressive tumour rather than depression will be responsible for worse outcome of cancer patients and will be associated with a more drastic challenge of the immune system, as a side effect leading to neurotransmitter disturbances.

journal_name

Med Hypotheses

journal_title

Medical hypotheses

authors

Murr C,Widner B,Sperner-Unterweger B,Ledochowski M,Schubert C,Fuchs D

doi

10.1054/mehy.1999.1043

keywords:

subject

Has Abstract

pub_date

2000-08-01 00:00:00

pages

137-40

issue

2

eissn

0306-9877

issn

1532-2777

pii

S0306-9877(99)91043-5

journal_volume

55

pub_type

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