Rizos E.N.,National and Kapodistrian University of Athens |
Michalopoulou P.G.,National and Kapodistrian University of Athens |
Michalopoulou P.G.,Kings College London |
Siafakas N.,National and Kapodistrian University of Athens |
And 7 more authors.
Neuropsychobiology | Year: 2010
Background/Aims: The brain-derived neurotrophic factor (BDNF) levels in serum and the central nervous system are altered in patients with schizophrenia, suggesting that changes in the expression of BDNF might contribute to the disease pathophysiology. Long duration of untreated psychosis (DUP) has been associated with poorer prognosis in patients with schizophrenia. Such a relationship of untreated psychosis to outcome may indicate a neurodegenerative process and may have important implications for understanding the pathophysiology of schizophrenia. Methods: In this study, we investigated the association between serum BDNF levels and DUP in a sample of drug-naïve patients in their first episode of schizophrenia (FEP). We investigated serum BDNF levels in a sample of 37 drug-naïve FEP patients and 21 matched healthy subjects. Results: The serum BDNF level in the sample of FEP was significantly reduced compared to the healthy subjects (18.87 ± 8.23 vs. 29.2 ± 7.73 ng/ml, t = 4.76, d.f. = 57, p = 0.01). A negative correlation was found between serum BDNF levels and DUP in the group of patients (r = -0.346, p = 0.036). Conclusions: Our findings indicate that low serum BDNF levels at the onset of schizophrenia were associated with a long DUP and this could reflect an acute neurodegenerative reaction during the untreated phase of psychosis. © 2010 S. Karger AG. Source
Toutouzas K.,Athens Medical School |
Tsiamis E.,Athens Medical School |
Karanasos A.,Athens Medical School |
Drakopoulou M.,Athens Medical School |
And 8 more authors.
JACC: Cardiovascular Interventions | Year: 2010
Objectives This study investigated the association between morphological characteristics of culprit atheromatic lesions as assessed by optical coherence tomography and Thrombolysis In Myocardial Infarction (TIMI) flow grade after thrombolysis in patients with ST-segment elevation myocardial infarction (STEMI). Background Although several variables have been found to predict coronary flow after thrombolysis in patients with STEMI, the impact of culprit lesion morphology has not been studied. Methods Fifty-five patients with STEMI from 3 tertiary centers that were treated with thrombolysis and underwent optical coherence tomography examination in the culprit lesion between 24 and 48 h after thrombolysis were included in the study. Patients were categorized on the basis of TIMI flow grade into patients with TIMI flow grade 3 versus TIMI flow grade ≤2. Results Patients with TIMI flow grade ≤2 had plaques with more lipid quadrants than patients with TIMI flow grade 3 (p < 0.001), and presented with greater incidence of plaque rupture (p = 0.001). Mean minimal cap thickness was greater in patients with patent arteries than in patients with impaired flow (87 ± 26 μm vs. 48 ± 18 μm, p < 0.0001). Minimal cap thickness was independently associated with TIMI flow grade. Conclusions The morphological characteristics of the culprit atheromatic lesion in patients with STEMI are associated with coronary flow after thrombolysis. The lipid content, the existence of rupture, and mainly the thickness of the fibrous cap are associated with the outcome of thrombolysis. © 2010 BY THE AMERICAN COLLEGE OF CARDIOLOGY FOUNDATION. Source
Minimally invasive extracavitary approach for thoracic discectomy and interbody fusion: 1-Year clinical and radiographic outcomes in 13 patients compared with a cohort of traditional anterior transthoracic approaches - Clinical article
Khoo L.T.,University of California at Los Angeles |
Smith Z.A.,University of California at Los Angeles |
Asgarzadie F.,University of California at Los Angeles |
Barlas Y.,General Hospital of Nikea |
And 3 more authors.
Journal of Neurosurgery: Spine | Year: 2011
Object. Open transthoracic approaches, considered the standard in treating thoracic disc herniation (TDH), are associated with significant comorbidities. The authors describe a minimally invasive lateral extracavitary tubular approach for discectomy and fusion (MIECTDF) to treat TDH. Methods. In 13 patients (5 men, 8 women; mean age 51.8 years) with myelopathy and 15 noncalcified TDHs, the authors achieved a far-lateral trajectory by dilating percutaneously to a 20-mm working portal docked at the transverse process-facet junction, which then provided a corridor for a near-total discectomy, bilateral laminotomies, and interbody arthrodesis requiring minimal cord retraction. A cohort of 11 demographically comparable patients treated via transthoracic approaches was used as control. Results. Preoperative Frankel grades were B in 1 patient, C in 4, D in 5, and E in 3, whereas at mean of 10 months, 11 had Grade E function and 2 had Grade D function. Mean surgical metrics were operating room time 93.75 minutes, blood loss 33 ml, and hospital stay 3.1 days. Complications included 4 transient paresthesias, 1 CSF leak, 1 abdominal wall weakness, and 3 nonwound infections. One-year follow-up MR imaging revealed full decompression in all cases and no cage migration. Mean visual analog scales scores preoperative, at 6 weeks, 3 months, and 1 year were 5.6, 4.5, 3.2, and 1.2, respectively. No differences existed in preoperative clinical and radiographic profile of the study and control groups. Compared with controls, the MIECTDF group achieved superior scores in all metrics (p < 0.01) except for equivalent 1-year neurological outcomes. Conclusions. Compared with transthoracic procedures, MIECTDF effectively decompressed the spinal canal, yielding identical 1-year radiographic and clinical outcomes to those seen in controls, while producing superior clinical scores in the interim. Thus, MIECTDF is the authors' treatment of choice for TDH. Source
Rallidis L.S.,National and Kapodistrian University of Athens |
Varounis C.,National and Kapodistrian University of Athens |
Sourides V.,National and Kapodistrian University of Athens |
Charalampopoulos A.,General Hospital of Nikea |
And 5 more authors.
Current Medical Research and Opinion | Year: 2011
Objective: Depression is common in patients with coronary artery disease (CAD) and is associated with higher risk of cardiovascular adverse events. We aimed to explore the prognostic role of mild depression on cardiovascular mortality and compare its prognostic value with C-reactive protein (CRP) levels in patients with stable CAD. Research design and methods: We initially recruited 523 consecutive patients with stable CAD. Glucose, lipids and CRP levels were measured and an echocardiographic study was performed. In addition, depressive symptomatology was assessed with the Zung Depression Rating Scale (ZDRS, range 20-80). Patients on antidepressant treatment or with ZDRS score ≥60 were excluded. Patients were followed up at 6 month intervals (median 33 months, interquartile range 24-40 months) by telephone interview. Results: Follow-up data were obtained from 485 patients (92.7%). Nineteen patients with baseline CRP levels >10 mg/L and eight with non-cardiovascular death were excluded from analysis. Of the remaining 458 patients 113 (24.7%) presented cardiac events. Of them 21 died (4.6%), 42 developed acute coronary syndrome (9.2%), 27 (5.9%) had a revascularization procedure due clinical deterioration, two had a stroke (0.44%) and 21 (4.6%) an arrhythmic event. Multivariate Cox regression analysis showed that ZDRS score was independent predictor of cardiovascular death (hazard ratio [HR]: 1.104 with 95% confidence interval [CI]: 1.039-1.172, p=0.001) after adjustment for conventional risk factors and CRP. The Wald test statistic of CRP was 2.59, whereas the Wald test statistic of ZDRS score was 3.23, indicating better predictability of ZDRS score. ZDRS score was also independent predictor of both cardiovascular death and arrhythmic event (HR: 1.102 with 95% CI: 1.051-1.156, p<0.001) after adjustment for conventional risk factors and CRP levels. The main limitations of our study were the evaluation of depression at one point in time and the assessment of inflammatory burden by measuring only CRP levels. Conclusions: Mild depression is associated with increased cardiovascular mortality and is a better predictor than CRP levels in patients with stable CAD. © 2011 Informa UK Ltd. Source
Bouki K.P.,General Hospital of Nikea |
Katsafados M.G.,General Hospital of Nikea |
Chatzopoulos D.N.,General Hospital of Nikea |
Psychari S.N.,General Hospital of Nikea |
And 6 more authors.
International Journal of Cardiology | Year: 2012
Background: OCT with its unique image resolution is the ideal method to detect culprit lesion characteristics in different clinical presentations. The identification of inflammatory markers related to plaque characteristics may be of clinical importance. Methods: Thirty-two patients with acute coronary syndromes (ACS) and fourteen patients with stable angina pectoris (SAP) were enrolled in this study. Culprit lesion morphology was assessed by optical coherence tomography (OCT) in patients with ACS and SAP. The possible relations between serum levels of high sensitivity-C reactive protein (hs-CRP) and interleukin-18 (IL-18) with plaque characteristics were investigated in those patients. Results: Plaque rupture and thin-cap fibroatheroma (TCFA) were detected more frequently in ACS patients compared with SAP patients, (78.6% vs. 14.3%, p < 0.001, 92.9% vs. 14.3%, p < 0.001, respectively). Higher levels of serum hs-CRP and IL-18 were found in patients with plaque rupture vs. those with no plaque rupture (median value: 19.2 mg/L vs. 1.6 mg/L, p < 0.001 and 219.5 pg/ml vs. 127.5 pg/ml, p = 0.001 respectively), and TCFA vs. those without TCFA (median value: 15.2 mg/L vs. 1.6 mg/L, p = 0.004 and 209.0 pg/ml vs.153.2 pg/ml, p = 0.03 respectively). Serum hs-CRP was the only independent predictor of plaque rupture (p = 0.02, odds ratio 1.1, 95% confidence interval 1.0 to 1.2). A cut-off value of hs-CRP > 4.5 mg/L could detect ruptured plaque with a sensitivity of 91.7% and a specificity of 77.8%. Conclusions: OCT detected plaque rupture and TCFA more frequent in ACS patients compared with SAP. Elevated hs-CRP and IL-18 were positively related to plaque instability and rupture. © 2011 Published by Elsevier Ireland Ltd. Source