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• W3048286462 abstract "Patients with brain tumors have an increased risk for depression, whose underlying pathomechanism may involve dysregulated tryptophan/kynurenine metabolism. In this study, we analyzed the relation of depressive symptoms to clinical and tumor characteristics as well as cerebral and systemic tryptophan metabolism in patients with primary brain tumors. Sixty patients with newly-diagnosed or recurrent primary brain tumor underwent testing with the Beck Depression Inventory-II (BDI-II), and 34 patients also had positron emission tomography (PET) imaging with alpha-[11C]methyl-L-tryptophan (AMT). BDI-II scores were correlated with clinical and tumor-related variables, cerebral regional AMT metabolism measured in the non-tumoral hemisphere, and plasma tryptophan metabolite levels. Sixteen patients (27%) had BDI-II scores indicating depression, including 6 with moderate/severe depression. High BDI-II scores were independent of clinical and tumor-related variables except lower Karnofsky Performance Status scores. In patients with recurrent malignant gliomas, depression was associated with shorter survival (hazard ratio: 3.7; p = 0.048). High BDI-II total and somatic subscale scores were associated with higher frontal cortical and thalamic AMT metabolic values measured on PET. In contrast, plasma tryptophan and kynurenine metabolite levels did not correlate with the BDI-II scores. In conclusion, our results confirm previous data that depression affects more than ¼ of patients with primary brain tumors, it is largely independent of tumor characteristics and is associated with shorter survival in patients with recurrent malignant gliomas. On PET imaging, higher tryptophan metabolism in the frontal cortex and thalamus was found in those with brain tumor-associated depression and supports the role of dysregulated tryptophan/kynurenine metabolism in this condition." @default.
• W3048286462 created "2020-08-13" @default.
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• W3048286462 date "2020-08-06" @default.
• W3048286462 modified "2023-10-09" @default.
• W3048286462 title "Depression and tryptophan metabolism in patients with primary brain tumors: Clinical and molecular imaging correlates" @default.
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• W3048286462 doi "https://doi.org/10.1007/s11682-020-00305-7" @default.
• W3048286462 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7865029" @default.
• W3048286462 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32767048" @default.
• W3048286462 hasPublicationYear "2020" @default.
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