Vytenis Pranas Deltuva

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Methylation of promoter region is the major mechanism affecting gene expression in tumors. Recent methylome studies of brain tumors revealed a list of new epigenetically modified genes. Our aim was to study promoter methylation of newly identified epigenetically silenced genes together with already known epigenetic markers and evaluate its separate and(More)
Epigenetic alterations alone or in combination with genetic mechanisms play a key role in brain tumorigenesis. Glioblastoma is one of the most common, lethal and poor clinical outcome primary brain tumors with extraordinarily miscellaneous epigenetic alterations profile. The aim of this study was to investigate new potential prognostic epigenetic markers(More)
Approximately 30% of all primary CNS tumors are meningiomas. Depending on histological type, meningiomas can recur as follows: benign--with five-year recurrence of 5%, atypical--recurrence approximately 40%, and anaplastic with recurrence of 50-80%. In an attempt to understand the molecular mechanism of meningioma recurrence we investigated the N-Myc(More)
BACKGROUND In brain tumor (BT) patients, the association between health-related quality of life (HRQoL) and psychological characteristics remains largely unknown. We evaluated the association of personality traits, clinical factors, psychological distress symptoms, and cognitive state with HRQoL in BT patients. METHODS On admission for BT surgery, 200(More)
OBJECTIVE Psychological distress is highly prevalent but often undiagnosed in brain tumor patients. We evaluated the psychometric properties of the Patient Health Questionnaire-2 (PHQ-2) for screening of distressed neurosurgical brain tumor patients. METHODS A total of 226 (69% women; mean age 55.6 ± 14.7 years) consecutive patients on admission for(More)
OBJECT A low triiodothyronine (T3) state is highly prevalent and is associated with a poor prognosis in critically ill patients. The authors investigated, in patients undergoing brain tumor surgery, the direct association of a perioperative low T3 syndrome with clinical outcomes and also with symptoms of depression and anxiety. METHODS Ninety consecutive(More)
BACKGROUND Low tri-iodothyronine syndrome is associated with worse prognosis of severely ill patients. We investigated the association of thyroid hormone levels with discharge outcomes and 5-year mortality in primary brain tumor patients. METHODS From January, 2010 until September, 2011, 230 patients (70% women) before brain tumor surgery were evaluated(More)
Reduced triiodothyronine (T3) concentrations were implicated in worse prognosis of brain tumor patients. In this study we investigated the association of normal and abnormal thyroid hormone concentrations with health-related quality of life (HRQoL) of patients with primary brain tumors. Sixty-three patients (67% women and a mean age of 55.5 ± 13.8 years)(More)
BACKGROUND This study aimed to evaluate prevalence and severity of professional burnout in a sample of Lithuanian neurosurgeons and to analyze its personal, interpersonal, and organizational correlates. METHOD Thirty-one out of 79 (response rate 39 %) Lithuanian neurosurgeons participated in the study. Professional burnout was evaluated using the Maslach(More)