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Biomedical subjects

Weronika Rymer

Publications and source records attributed to Weronika Rymer.

6 recordsLinked to original sources

[Neuropsychiatric disorders in HCV-infected people--own observations].

UNLABELLED: Neuropsychiatric symptoms are commonly associated with chronic hepatitis C virus infection and its treatment. There are no Polish studies concerned this problem in patients during combination therapy (interferon and ribavirin). AIM: to examine the mood disorders an quality of life during the first 12 weeks of therapy. METHODS: The following research instruments were used: the Present State Examination (PSE), The Beck Depression Inventory, The Montgomery Asberg Depression Rating Scale, SF-36, Hamilton Depression Rating Scale. ALT, AST, GGT activity, HCV viral load and genotype, histological activity index of the liver was also measured. RESULTS: A group of 94 untreated patients (M=, K=) with hepatitis C was examined. 44 of them was examined secondly after 12 week of combination therapy. Depression disorders was observed in 4% pts before treatment and in 11% after 12 weeks therapy. In the group untreated patients there was two statistically significant correlations: between examined neuropsychiatric disorders and HCV viral load and necroinflammatory activity in the liver. CONCLUSIONS: The mood disorders are not so common in the patients with hepatitis C and could have biological etiology. The interferon based therapy increase the frequency and intensity of them.

Adult↗

[Experimental therapy in HCV infection].

PEGInterferon and ribavirin combination therapy is a gold standard in hepatitis C treatment. However it is not efficacious in all cases. Therefore, many studies are conducted to identifying additional drugs and therapeutic regimens, which might be more affordable. The progress in development of HCV culture systems (e.g.replicon) is crucial for successful therapeutic intervention in viral life-cycle (viral NS5B polymerase and NS3/4A protease inhibitors, antisense nucleotides, ribozymes, siRNA). Other classes of immunomodulatory/antiviral agents and new interferon formulation have also been considered for IFN-based therapy also. On the other hand immunomodulatory pathways are attractive target for novel anti-HCV therapy. Combination therapy targeting different aspects will be probably in the future successful option in hepatitis C treatment.

Antiviral Agents↗

[The role of therapeutic use of interleukin-2 in HIV infection].

Interleukin-2 (IL-2) is a cytokine produced by lymphocytes T CD4+, T CD8+ and NK cells. IL-2 increases the number of lymphocytes T and prolongs their survival and has extensive immunomodulatory effect. High levels of IL-2 are observed during asymptomatic phase of HIV infection (TH-1 dependent cytokine) and low levels are observed during progression of immunodeficiency. IL-2 inhibits apoptosis of CD4+ T cells, improves NK cells activity, has influence on production of soluble antiviral factor (CAF) which inhibits viral activity etc. That is why IL-2 has been introduced to the treatment of HIV infection along with highly active antiretroviral therapy (HAART). High T CD4+ cells count predicts long survival of HIV infected individual. Phase III clinical trials concerning IL-2 are now performed and the preliminary results are promising. Polish centers also take part in the ESPRIT study. Adverse events of various severity are seen in patients under treatment (anti inflammatory drugs are required). The symptoms usually resolve within a few days after IL-2 therapy is stopped.

Anti-HIV Agents↗

[Neuropsychiatric symptoms related to interferon alpha].

Neuropsychiatric symptoms are commonly related to interferon alpha treatment. The paper summarises the current knowledge about their aetiology, course, and treatment. Interferon alpha is a cytokine with antiviral and antineoplasmatic activity. It is commonly used in the treatment of chronic hepatitis C and B, malignant melanoma, Kaposi sarcoma, renal cancers, and some haematological malignancies. Treatment with interferon alpha is associated with depressive symptoms, cognitive disturbances, chronic fatigue syndrome, dysphoria, anxiety symptoms, anorexia, mania and psychotic states. Up to a half of the patients need psychiatric consultations, 10-25% of them need psychiatric treatment. Neuropsychiatric symptoms are the results of direct affection of CNS by interferon and induced cytokines. They increase hypothalamic-pituitary-adrenal (HPA) activity, alter thyroid function and lead to a behavioural syndrome called 'sickness behaviour'. Moreover interferon induces the activity of 2, 3 indoloamine dioxygenase, the enzyme which converts tryptophan into kynurenine, leads to a reduced level of tryptophan, and thus to a reduced level of central serotonin and to an increased level of neurotoxic kynurenine metabolites. Interferon also affects central opioid receptors and changes dopaminergic and noradrenergic neurotransmission. Serotonin selective reuptake inhibitors (SSRI), other antidepressants i.e. nortriptyline, benzodiazepines, naltrexone, and neuroleptics (for maniac and psychotic states) are used to treat interferon associated psychiatric symptoms. Psychological therapy may also be useful, as well as psychoeducation and behavioural interventions.

Antineoplastic Agents↗

[Depressive symptoms during treatment with interferon alpha for HCV infection--preliminary report].

BACKGROUND: Interferon alpha, used in hepatitis C virus (HCV) infection causes many neuropsychiatric side effects: emotional disturbances, chronic fatigue, cognitive impairment, and psychotic states. They overlap with emotional disturbances and cognitive impairment caused by chronic HCV infection. AIM: To assess prevalence and severity of depressive symptoms in patients treated with interferon alpha due to HCV infection. METHODS: A total of 44 persons (27 men, 17 women) aged from 21 to 61 years old (median 45 years) treated due to chronic hepatitis were examined. They were treated with pegylated interferon alfa 2a and ribavirin. All of them underwent liver biopsy to assess liver inflammation, fibrosis, and steatosis as well as completed Eysenck's neuroticism questionnaire. Then, before treatment and after 12 weeks, they underwent biochemical and psychiatric examination. Biochemical examination included aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transpeptidase (G-GT), and HCV RNA. Psychiatric examination included Beck Depression Inventory (BDI), Hamilton Depressive Rating Scale (HAMD), Montgomery-Asberg Depression Rating Scale (MADRS), and the SF-36 questionnaire. Diagnoses of depression were made basing on PSE questionnaire from Schedules of Clinical Assessment in Neuropsychiatry (SCAN version 2.0). RESULTS: Depressive disorders were diagnosed in 3 (6.8%) subjects before treatment and in 5 (11.4%) subjects after 12 weeks of treatment. A statistically significant increase of depressive rates was observed (medians: HDRS 6/11.5; MADRS 4/10; BDI 8/10.5). Quality of life dropped significantly in some SF - 36 scales: physical functioning, general health, vitality, and social functioning. Depressive ratings were independent of biochemical parameters (AST, ALT, G-GT), HCV RNA, liver inflammation, fibrosis, steatosis level, and HCV genotype. Ratings of neuroticism highly influenced all depressive ratings. Rise of depressive ratings was independent of neither any initial biochemical parameters nor the neuroticism level. CONCLUSIONS: Interferon alpha increases the severity of depressive symptoms. The rise is probably caused by biological activity of interferon and independent of initial ratings of depression.

Adult↗