HCV patients, psychopathology and tryptophan metabolism: analysis of the effects of pegylated interferon plus ribavirin treatment

AL Zignego, A Cozzi, R Carpenedo, C Giannini… - Digestive and Liver …, 2007 - Elsevier
Aims: Depression and other psychiatric disorders are frequent in HCV-infected patients,
especially during interferon treatment. The molecular mechanism (s) maderlying this finding …

Low serum tryptophan levels, reduced macrophage IDO activity and high frequency of psychopathology in HCV patients

A Cozzi, AL Zignego, R Carpendo… - Journal of Viral …, 2006 - Wiley Online Library
Indoleamine 2, 3‐dioxygenase (IDO), a key enzyme of tryptophan (TRP) metabolism, is
induced in various tissues of patients with bacterial and viral infection or with neoplastic …

Effects of PEG-interferon alpha plus ribavirin on tryptophan metabolism in patients with chronic hepatitis C

S Comai, L Cavalletto, L Chemello… - Pharmacological …, 2011 - Elsevier
The currently recommended therapy for chronic hepatitis C (HCV) is a combination of
pegylated interferon-alpha (PEG-IFN alpha) and ribavirin. Psychiatric disorders, including …

[HTML][HTML] Depressive symptoms as a side effect of Interferon-α therapy induced by induction of indoleamine 2, 3-dioxygenase 1

Y Murakami, T Ishibashi, E Tomita, Y Imamura… - Scientific reports, 2016 - nature.com
Depression is known to occur frequently in chronic hepatitis C viral (HCV) patients receiving
interferon (IFN)-α therapy. In this study, we investigated whether indoleamine 2, 3 …

Irritability rather than depression during interferon treatment is linked to increased tryptophan catabolism

S Russo, IP Kema, EB Haagsma, JC Boon… - Psychosomatic …, 2005 - journals.lww.com
Objective: Treatment with recombinant interferon is associated with high rates of psychiatric
comorbidity. We investigated the relation between catabolism of the essential amino acid …

[HTML][HTML] Disturbances of tryptophan metabolism and risk of depression in HCV patients treated with IFN-alpha

GF Oxenkrug, WA Turski, W Zgrajka… - Journal of infectious …, 2014 - ncbi.nlm.nih.gov
Depression is a common side-effect of interferon (IFN)-alpha treatment of hepatitis C virus
(HCV) infection and melanoma. Disturbances of tryptophan (TRP) metabolism might …

Alterations in the metabolism of tryptophan in patients with chronic hepatitis C six months after pegylated interferon-α 2a treatment

T Pawlowski, K Malyszczak, M Inglot… - …, 2018 - Elsevier
Background Risk of depression and suicide in patients on interferon remains also after the
treatment, the pathogenesis of which is still unclear. We aimed to determine the influence of …

The role of anthranilic acid in the increase of depressive symptoms and major depressive disorder during treatment for hepatitis C with pegylated interferon-α2a and …

T Pawlowski, D Pawlak, M Inglot, M Zalewska… - Journal of Psychiatry and …, 2021 - jpn.ca
Background Tryptophan metabolism via the kynurenine pathway is considered the link
between the immune and endocrine systems. Dysregulation of serotonergic transmission …

Increased depressive ratings in patients with hepatitis C receiving interferon-α–based immunotherapy are related to interferon-α–induced changes in the serotonergic …

S Bonaccorso, V Marino, A Puzella… - Journal of clinical …, 2002 - journals.lww.com
There is now evidence that repeated administration of interferon-α (IFN-α) to patients with
chronic active hepatitis and cancers induces depressive symptoms. There is also evidence …

Impact of interferon alpha immunotherapy on tryptophan metabolism in patients with chronic hepatitis C. Results of a pilot studies on ten patients

J Vignau, O Costisella, V Canva, M Imbenotte… - L'encephale, 2008 - europepmc.org
Method Patients. Ten patients (mean [SD] age 45 years [12.7], range 29-63; three males,
seven females) with chronic hepatitis C eligible to receive IFN-alpha (1.5 microg/kg/week …