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Schwendenwein A, Boettiger K, Kovacs I, Barany N, Lang C, Megyesfalvi Z, Grusch M, Kowol C, Rezeli M, Hoetzenecker K, Dome B, Schelch K. EP14.02-002 Cisplatin in Combination with Entinostat exerts Synergistic Antineoplastic Activity in Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Forgács L, Borman AM, Kovács R, Balázsi D, Tóth Z, Balázs B, Chun-Ju C, Kardos G, Kovacs I, Majoros L. In Vivo Efficacy of Amphotericin B against Four Candida auris Clades. J Fungi (Basel) 2022; 8:jof8050499. [PMID: 35628754 PMCID: PMC9144575 DOI: 10.3390/jof8050499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 02/01/2023] Open
Abstract
Candida auris is a multidrug-resistant fungus against which in some clinical situations amphotericin B (AMB) remains the alternative or first line drug. We compared daily 1 mg/kg of AMB efficacy in a neutropenic murine bloodstream infection model against 10 isolates representing four C. auris clades (South Asian n = 2; East Asian n = 2; South African n = 2; South American n = 4; two of which were of environmental origin). Five days of AMB treatment significantly increased the survival rates in mice infected with isolates of the East Asian clade, and 1 isolate each from the South African and South American clades (originated from bloodstream), but not in mice infected with the South Asian and 2 environmental isolates from the South American clades. AMB treatment decreased the fungal burden in mice infected with the 2 isolates each from East Asian and South African, and 1 out of 2 bloodstream isolates from South American clades in the hearts (p < 0.01), kidneys (p < 0.01) and brain (p < 0.05). AMB treatment, regardless of clades, significantly decreased colony forming units in the urine at day 3. However, histopathological examination in AMB-treated mice revealed large aggregates of yeast cells in the kidneys and hearts, and focal lesions in the cerebra and cerebelli, regardless of precise C. auris clade. Our clade-specific data confirm that the efficacy of AMB against C. auris is weak, explaining the therapeutic failures in clinical situations. Our results draw attention to the necessity to maximize the killing at the start of treatment to avoid later complications in the heart and central nervous system.
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Affiliation(s)
- Lajos Forgács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary
| | - Andrew M. Borman
- UK National Mycology Reference Laboratory, UK Health Security Agency, Science Quarter, Southmead Hospital, Bristol BS10 5NB, UK;
- Medical Research Council Centre for Medical Mycology (MRC CMM), University of Exeter, Exeter EX4 4QD, UK
| | - Renátó Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary
| | - Dávid Balázsi
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary
| | - Zoltán Tóth
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary
| | - Bence Balázs
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary
| | - Chiu Chun-Ju
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
| | - Gábor Kardos
- Department of Metagenomics, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary;
| | - Ilona Kovacs
- Department of Pathology, Kenézy Gyula Hospital, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary;
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98., 4032 Debrecen, Hungary; (L.F.); (R.K.); (D.B.); (Z.T.); (B.B.); (C.C.-J.)
- Correspondence: ; Tel.: +36-52-255-425; Fax: +36-52-255-424
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Korei C, Szabo B, Varga A, Barath B, Deak A, Vanyolos E, Hargitai Z, Kovacs I, Nemeth N, Peto K. Hematological, Micro-Rheological, and Metabolic Changes Modulated by Local Ischemic Pre- and Post-Conditioning in Rat Limb Ischemia-Reperfusion. Metabolites 2021; 11:metabo11110776. [PMID: 34822434 PMCID: PMC8625580 DOI: 10.3390/metabo11110776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/19/2022] Open
Abstract
In trauma and orthopedic surgery, limb ischemia-reperfusion (I/R) remains a great challenge. The effect of preventive protocols, including surgical conditioning approaches, is still controversial. We aimed to examine the effects of local ischemic pre-conditioning (PreC) and post-conditioning (PostC) on limb I/R. Anesthetized rats were randomized into sham-operated (control), I/R (120-min limb ischemia with tourniquet), PreC, or PostC groups (3 × 10-min tourniquet ischemia, 10-min reperfusion intervals). Blood samples were taken before and just after the ischemia, and on the first postoperative week for testing hematological, micro-rheological (erythrocyte deformability and aggregation), and metabolic parameters. Histological samples were also taken. Erythrocyte count, hemoglobin, and hematocrit values decreased, while after a temporary decrease, platelet count increased in I/R groups. Erythrocyte deformability impairment and aggregation enhancement were seen after ischemia, more obviously in the PreC group, and less in PostC. Blood pH decreased in all I/R groups. The elevation of creatinine and lactate concentration was the largest in PostC group. Histology did not reveal important differences. In conclusion, limb I/R caused micro-rheological impairment with hematological and metabolic changes. Ischemic pre- and post-conditioning had additive changes in various manners. Post-conditioning showed better micro-rheological effects. However, by these parameters it cannot be decided which protocol is better.
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Affiliation(s)
- Csaba Korei
- Department of Traumatology and Hand Surgery, Faculty of Medicine, University of Debrecen, Bartok Bela ut 2-26, H-4031 Debrecen, Hungary;
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
- Doctoral School of Clinical Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Balazs Szabo
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
- Doctoral School of Clinical Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Adam Varga
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
- Doctoral School of Clinical Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Barbara Barath
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
- Doctoral School of Clinical Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Adam Deak
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
| | - Erzsebet Vanyolos
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
| | - Zoltan Hargitai
- Clinical Center, Pathology Unit, Kenezy Campus, University of Debrecen, Bartok Bela ut 2-26, H-4031 Debrecen, Hungary; (Z.H.); (I.K.)
| | - Ilona Kovacs
- Clinical Center, Pathology Unit, Kenezy Campus, University of Debrecen, Bartok Bela ut 2-26, H-4031 Debrecen, Hungary; (Z.H.); (I.K.)
| | - Norbert Nemeth
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
- Correspondence: ; Tel./Fax: +36-52-416-915
| | - Katalin Peto
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (B.S.); (A.V.); (B.B.); (A.D.); (E.V.); (K.P.)
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Forgács L, Borman AM, Prépost E, Tóth Z, Kardos G, Kovács R, Szekely A, Nagy F, Kovacs I, Majoros L. Comparison of in vivo pathogenicity of four Candida auris clades in a neutropenic bloodstream infection murine model. Emerg Microbes Infect 2021; 9:1160-1169. [PMID: 32486923 PMCID: PMC7448943 DOI: 10.1080/22221751.2020.1771218] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Candida auris is an emerging worldwide concern, but comparative data about the virulence of different C. auris lineages in mammalian hosts is lacking. Different isolates of the four prevalent C. auris clades (South Asian n = 5, East Asian n = 4, South African n = 5, and South American n = 5) were compared to assess their virulence in a neutropenic murine bloodstream infection model with C. albicans as reference. C. auris, regardless of clade, proved to be less virulent than C. albicans. Highest overall mortality at day 21 was observed for the South American clade (96%), followed by the South Asian (80%), South African (45%) and East Asian (44%) clades. Fungal burden results showed close correlation with lethality. Histopathological examination revealed large aggregates of blastoconidia and budding yeast cells in the hearts, kidneys and livers but not in the spleens. The myocardium of apparently healthy sacrificed mice as well as of mice found moribund showed contraction band necrosis in case of all lineages. Regardless of clade, the heart and kidneys were the most heavily affected organs. Isolates of the same clade showed differences in virulence in mice, but a markedly higher virulence of the South American clade was clearly demonstrated.
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Affiliation(s)
- Lajos Forgács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Andrew M Borman
- UK National Mycology Reference Laboratory (MRL), Public Health England South-West, Bristol, UK
| | - Eszter Prépost
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Zoltán Tóth
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Gábor Kardos
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Renátó Kovács
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Adrien Szekely
- UK National Mycology Reference Laboratory (MRL), Public Health England South-West, Bristol, UK
| | - Fruzsina Nagy
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, Hungary
| | - Ilona Kovacs
- Department of Pathology, Kenézy Gyula Hospital, University of Debrecen, Debrecen, Hungary
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Opincariu D, Rat N, Mester A, Hodas R, Cernica D, Pasaroiu D, Ratiu M, Chitu M, Kovacs I, Benedek I, Benedek T. P360 Site specific phenotype of atherosclerotic lesions according to plaque location within the coronary tree, a CCTA based study. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, Project funded by the European Union and the Government of Romania
Background
The coronary CT angiography (CCTA)-based differences in composition, morphology and vulnerability of coronary plaques (CPs), according to their location within the coronary tree, have not been investigated so far.
Purpose
We sought to perform a comparative analysis between plaques located at different levels within the coronary tree, to identify the differences in plaque composition, morphology, and vulnerability between the three major coronary branches.
Methods
We conducted a cross-sectional, observational study on 75 patients with stable coronary artery disease who underwent CCTA for assessment of coronary lesions that exhibited at least one vulnerable plaque (VP) in the coronary tree. After image acquisition, coronary plaque analysis was performed with the use of the Syngo.via Frontier (Siemens) software. Plaque analysis also included evaluation of presence of VM: low attenuation plaque – LAP; napkin ring sign – NRS; spotty calcifications – SC; positive remodeling – PR. VP were defined as lesions that presented at least 1 vulnerability marker (VM). In total, 90 coronary VPs located at the level of the left anterior descending (LAD; n = 30), circumflex (CXA; n = 30) and right coronary artery respectively (RCA; n = 30) were identified and analyzed.
Results
Lesions located in the RCA presented a significantly higher length (LAD - 18.67± 5.49 vs. CXA - 15.48 ±3.73 vs. RCA - 20.47 ± 5.97 mm, p = 0.001), a higher degree of stenosis (LAD - 57.77 ± 8.62 vs. CXA - 54.50 ± 11.25 vs. RCA - 59.63 ± 10.42 mm, p = 0.022), and were more voluminous (LAD - 187.9 ± 86.03 vs. CXA - 146.9 ± 102.4 vs. RCA - 248.1 ± 11.4 mm3, p = 0.0007) compared to those located in the LAD and CXA, but no difference was observed regarding the remodeling (p = 0.180) or eccentricity indexes (p = 0.423). Plaque composition was also significantly different according to plaque location: calcified volume (LAD - 44.07 ± 63.90 vs. CXA - 12.40 ± 19.65 vs. RCA - 33.69 ± 34.38 mm3, p = 0.002), non-calcified volume (LAD - 143.8 ± 76.02 vs. CXA - 134.5 ± 102.2 vs. RCA - 214.4 ± 99.67 mm3, p = 0.002), lipid rich volume (LAD - 14.95 ± 22.69 vs. CXA - 6.44 ± 13.42 vs. RCA -16.07 ± 15.74 mm3, p = 0.0005), fibrotic volume (LAD - 128.9 ± 66.10 vs. CXA - 128.1 ± 91.56 vs. RCA - 198.3 ± 92.34 mm3, p = 0.003). The highest number of VM per plaque was present in the LAD (LAD - 2.2 ± 0.8 vs. CXA - 1.6 ± 0.7 vs. RCA - 1.8 ± 0.6, p = 0.01), as well as highest rate of VPs (LAD – 80%, CXA – 46.6%, RCA – 70%, p = 0.01). No difference was registered between coronary arteries on the presence of SCs (p = 0.670), NRS (p = 0.455), PR (p = 0.833), but LAPs were more frequently located in the LAD (p = 0.0009).
Conclusions
Coronary plaques located in the RCA were more voluminous and exhibited a higher volume of lipid rich and non-calcified atheroma. However, compared to the RCA and CXA, the left anterior descending artery presented CPs with a more expressed degree of vulnerability, a higher number of vulnerability markers per plaque, and a higher incidence of LAP.
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Affiliation(s)
- D Opincariu
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - N Rat
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - A Mester
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - R Hodas
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - D Cernica
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - D Pasaroiu
- Emergency Clinical County Hospital of Tirgu Mures, Clinic of Cardiology, Tirgu Mures, Romania
| | - M Ratiu
- Center of Advanced Research in Multimodality Cardiac Imaging, Cardio Med Medical Center, Tirgu Mures, Romania
| | - M Chitu
- Emergency Clinical County Hospital of Tirgu Mures, Clinic of Cardiology, Tirgu Mures, Romania
| | - I Kovacs
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - I Benedek
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - T Benedek
- University of Medicine of Targu Mures, Targu Mures, Romania
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Bordi L, Kovacs I, Korodi SZ, Hodas R, Benedek T, Benedek I. P674 Epicardial fat volume is associated with the risk of atrial fibrillation recurrence following pulmonary vein isolation. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Plaqueimage
Background
Atrial fibrillation (AF) is the most common supraventricular rhythm disturbance and pulmonary vein (PV) isolation has an important role in rhythm control treatment strategies of this disease. Various anatomical and clinical characteristics have been well established as predictors of the risk of recurrence following ablation procedures, but the role of epicardial fat tissue (EFT) in the recurrence of AF has not been elucidated so far.
Purpose
To investigate the influence of left atrial size and EFT volume in the recurrence of AF after pulmonary vein ablation, during a 6-month follow-up.
Methods
A total of 40 patients, 52.5% with paroxysmal and 47.5% with chronic AF underwent PV isolation using radiofrequency and cryoablation techniques. EFT was determined using cardiac computed tomography angiography (CCTA) associated with advanced image post-processing techniques.
Results
In patients who developed AF recurrence at 6 months after AF ablation, the volume of EFT and of left atrium were significantly larger than in the group who maintained sinus rhythm (202.5 ± 64.56 ml vs. 138 ± 55.74 ml, p = 0.01 for EFT, and 149.3 ± 4.66 ml vs. 90.63 ± 5.19 ml, p <0.0001 for left atrial volume, respectively). The left ventricular ejection fraction was significantly lower in patients with AF recurrence (50.25 ± 6.54% vs. 54.22 ± 3.95%, p = 0,04). The analysis of AF recurrence between the two different ablation techniques did not show any difference in recurrence rates between radiofrequency and cryoablation methods (29% vs. 23%, respectively p = 0.73). At the same time, recurrence rates after AF ablation were not influenced by the main cardiovascular risk factors (age, hypertension, dyslipidemia and smoking) and was not associated with different risk scores (CHA2DS2-VASc and HAS-BLED).
Conclusion
Patients with AF recurrence after pulmonary vein ablation present significantly higher EFT or left atrial volumes compared to patients who maintained sinus rhythm. This indicates the inflammatory mediated response, usually accompanied by an increased amount of EFT, could be associated with the risk of AF recurrence following catheter ablation of the pulmonary veins.
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Affiliation(s)
- L Bordi
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
| | - I Kovacs
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
| | - S Z Korodi
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
| | - R Hodas
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
| | - T Benedek
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
| | - I Benedek
- County Emergency Hospital of Targu Mures, Cardiology, Targu Mures, Romania
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Mester A, Benedek T, Opincariu D, Benedek A, Ratiu M, Hodas R, Cernica D, Kovacs I, Rat N, Chitu M, Benedek I. P1437 Integrated ST segment elevation score as a new predictor of the myocardial scar extent determined with LGE-CMR at 1-month follow-up after STEMI. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Funded by the research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, by the European Union and the Government of Romania
Background
The inflammatory response in the acute phase of a myocardial infarction, as well as in later phases contributes to the healing process of the infarcted myocardium and the left ventricular remodeling. Restoration and improvement of LV function highly depends on the magnitude of scar formation. Late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) imaging has been validated for an accurate determination of the myocardial scar size and transmurality. The recovery of ST segment elevation is a liable marker of vessel patency following PCI.
Purpose
The aim of the study was to validate a new integrated score of ST segment elevation score (ISSTE) as a new predictor of the myocardial scar tissue size, in relation with increased inflammatory biomarkers, with the extent of myocardial fibrosis at one month, assessed with LGE-CMR, after STEMI.
Methods
We included 65 patients with STEMI who underwent urgent revascularization with PCI in the first 12 hours from the onset of symptoms. The ISSTE was determined by summing the ST segment elevation in all registered ECG leads at presentation (ISSTE-1) and at 2 hours (ISSTE-2) after primary PCI. Blood samples were also collected at baseline and day-5 for determination of serum hs-CRP levels. At 1-month follow-up all patients under LGE-CMR (1.5T scanner) for evaluation of the myocardial scar extent (volume, percentage, transmurality).
Results
ISSTE-2 was significantly correlated with day-5 hs-CRP serum levels (r = 0.546, 95%CI: 0.030-0.832, p = 0.037), although no significant correlations were noted with baseline hs-CRP levels (r= 0.238, p = 0.407). There were no significant correlations between ISSTE-1 score and the myocardial scar percentage (r = 0.241, p = 0.11) or high transmurality volume (r = 0.194, p = 0.21), while ISSTE-2 significantly correlated with myocardial scar mass (r = 0.406, 95%CI: 0.107-0.637 p = 0.007) and high transmurality volume (r = 0.344, 95%CI: 0.0320-0.596, p = 0.0273). The restoration of the ST segment, reflected by the difference between ISSTE-1 and ISSTE -2 is correlated with the infarct size mass (r = 0.336, 95%CI: 0.0307 -0.584, p = 0.027).
Conclusion
The magnitude of ST segment elevation determined at 2 hours after PCI was associated with the inflammatory response at day 5 after STEMI and it may serve as a predictor for the extent of the myocardial scar tissue determined with LGE-CMR at 1 month following STEMI. The ISSTE-1 score calculated at presentation does not reflect extent of the affected myocardial tissue following PCI.
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Affiliation(s)
- A Mester
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - T Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - D Opincariu
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - A Benedek
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - M Ratiu
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - R Hodas
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - D Cernica
- County Emergency Hospital of Targu Mures, Targu Mures, Romania
| | - I Kovacs
- University of Medicine and Pharmacy, Targu-Mures, Romania
| | - N Rat
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - M Chitu
- Cardiomed Center of Advanced Research in Multimodality Cardiac Imaging, Targu-Mures, Romania
| | - I Benedek
- University of Medicine and Pharmacy, Targu-Mures, Romania
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Rat N, Opincariu D, Hodas R, Ratiu M, Mester A, Chitu M, Kovacs I, Cernica D, Parajko Z, Benedek I, Benedek T. P821 Influence of periplaque fat on coronary plaque vulnerability, a comparative analysis between atherosclerotic lesions located in the right versus left coronary arteries. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Research grant PlaqueImage, contract number 26/01.09.2016, SMIS code 103544, Project funded by the European Union and the Government of Romania
Background
The role of epicardial adipose tissue on coronary plaque vulnerability has been well established. However, the role of periplaque fat (PPF) has not been elucidated so far. Moreover, there is scarce data on the role of plaque location, in relation to peri-atheromatous adipose tissue on the vulnerability degree and morphology of coronary atherosclerotic lesions.
Purpose
To evaluate the influence of PPF on coronary plaque vulnerability, in a comparative analysis between atherosclerotic lesions located in the right and left coronary arteries.
Methods
This is an observational study which included 82 patients with stable CAD, who underwent 128-multislice CT coronary angiography, presented at least one coronary lesion with at least 50% degree of stenosis and exhibited ≥1 vulnerability markers in the respective coronary plaque. Plaques presenting features of vulnerability (spotty calcifications – SC, Napkin ring sign – NRS, low attenuation plaque – LAP, positive remodeling – PR), were defined as vulnerable plaques (VP). Image postprocessing was performed with the Syngo.via Frontier software and PPF was measured 10 mm around the analyzed VP. Based to the plaque location within the coronary tree, the study subjects were divided into: group 1 (location of VP in the right coronary artery - RCA) - n = 17; group 2 (location of VP in the left coronary artery - LCA) - n = 65.
Results
The analysis of the plaque characteristics indicated that the VPs from the RCA were significantly longer (20.81± 6.45 vs. 17.37 ± 4.59 mm, p = 0.02) and had a larger volume (269.3± 120.4 vs. 161.6 ± 80.89 mm3, p < 0.0001) compared to the VPs from the LCA. Compared to group 2, coronary plaques in group 1 exhibited a higher vulnerability degree, illustrated by a larger non-calcified volume (232.5 ± 111 vs. 134.5 ± 83.29 mm3, p = 0.0006), lipid-rich volume (19.4 ± 19.07 vs. 10.27 ± 17.08 mm3, p = 0.0106), and fibro-fatty volume (213 ± 101.3 vs. 124.2 ± 7.98 mm3, p = 0.0009). The PPF was significantly larger in VPs from the RCA (0.92 ± 0.48 mm3 vs. 0. 57± 0.34 mm3, p = 0.0041) compared to VPs located in the LCA. No differences were found regarding the total epicardial fat between the two groups (p = 0.386).
Conclusions
Atherosclerotic plaques located in the RCA exhibited a higher number of vulnerability characteristics compared to those located in the left coronary system and PPF was more pronounced in the regions surrounding VPs located within the RCA. This difference in vulnerability features could be explained not only by geometrical and hemodynamical characteristics of the coronary circulation, but also by inflammation-mediated alteration of endothelial shear stress triggered by release of inflammatory mediators from the local epicardial fat.
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Affiliation(s)
- N Rat
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - D Opincariu
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - R Hodas
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - M Ratiu
- Center of Advanced Research in Multimodality Cardiac Imaging, Cardio Med Medical Center, Tirgu Mures, Romania
| | - A Mester
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - M Chitu
- County Clinical Emergency Hospital, Clinic of Cardiology, Tirgu Mures, Romania
| | - I Kovacs
- County Clinical Emergency Hospital, Clinic of Cardiology, Tirgu Mures, Romania
| | - D Cernica
- County Clinical Emergency Hospital, Clinic of Cardiology, Tirgu Mures, Romania
| | - Z Parajko
- County Clinical Emergency Hospital, Clinic of Cardiology, Tirgu Mures, Romania
| | - I Benedek
- University of Medicine of Targu Mures, Targu Mures, Romania
| | - T Benedek
- University of Medicine of Targu Mures, Targu Mures, Romania
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9
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Pereira da Silva A, Geraldes M, Díaz-Lanza AM, Kovacs I, Costa MC. Family medicine physicians' perception and attitudes of herbal substances use in greater Lisbon region. Phytomedicine 2018; 47:1-11. [PMID: 30166093 DOI: 10.1016/j.phymed.2018.04.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 03/24/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Previous works showed patients preference for herbal substances (HS) although they also highlighted a discrepancy with physicians' adherence to HS and its recommendation. HYPOTHESIS/PURPOSE This study aimed to assess physician's perception and attitudes concerning the use of HS for their patients in a Family Medicine approach. STUDY DESIGN Observational cross-sectional exploratory study. METHODS A questionnaire survey was applied to National Health System physicians; 113 questionnaires were distributed in the Greater Lisbon region. RESULTS 80 valid questionnaires were received. The age of participants ranges from 29 to 64 with mean age of M ± SD:51.9 ± 10.0 years, mostly women (71.4%). Of these, 61.5% were unaware of traditional herbal medicinal products' (THMP) legal recognition and 67.3% of the difference between THMP and well-established use medicines. Absence of accordance between use and knowledge of herbal medicines (HM)/herbal products (HP) (p = 0.025) can be related to lack of Phytotherapy knowledge perception based on the nonexistence of specific training reported by 94.0% of physicians. Through factor analysis, three dimensions were obtained: Factor1, ``Use''; Factor2, ``Autonomy''; Factor3 ``Effort''. The overall Cronbach's α was 0.77, and 0.82 for Factor1. The evidence of use/prescription, has a correlation with ``Use'' (p < 0.0001), willingness to prescribe (p < 0.0001) and self-medication (p < 0.0001). There is a correlation (r = 0.605, p < 0.0001) between HS recommendation and self-medication. There were differences in use, perception and attitudes among Personalized-Health-Care Units and Family-Health Units physicians in relation to Factor1: p = 0.007 and Factor2: p = 0.021, age (p = 0.001), years of Medical career (p = 0.002), HM use (p = 0.014) and information about alternatives (p = 0.03). Physicians who answered correctly to the question on silymarin had higher scores in factor1 than those who did not: 1.76 vs. 1.25 (p = 0.019). CONCLUSION Low adherence to HS and little use of HM/HP were confirmed, highlighting the need for specific knowledge in Phytotherapy and its regulatory framework. This knowledge will enable the evaluation of herb-drug interactions and HM/HP adverse effects by the physicians thus justifying the integration of programmatic contents about HS in Medical Education.
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Affiliation(s)
| | - Marta Geraldes
- CBIOS - Research Center for Biosciences & Health Technologies, Lisbon, Portugal
| | - Ana M Díaz-Lanza
- Biomedical Sciences Department, Faculty of Pharmacy, University Alcala, Alcala de Henares, Madrid, Spain; Research Center in Economic and Organizational Sociology, Lisbon School of Economics & Management, University of Lisbon, Portugal
| | - Ilona Kovacs
- Research Center in Economic and Organizational Sociology, Lisbon School of Economics & Management, University of Lisbon, Portugal
| | - M Céu Costa
- CBIOS - Research Center for Biosciences & Health Technologies, Lisbon, Portugal; NICiTeS - Nucleus of Research in Health Sciences and Technologies, ERISA - Escola Superior de Saúde Ribeiro Sanches, Lisbon, Portugal; R&D unit, Mass Spectrometry Laboratory, Faculty of Sciences, University of Lisbon, Portugal
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10
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Bombicz PA, Szucs R, Fekete C, Nyulaszi L, Kovacs I. Coordination of hypervalent hexacoordinated Si in neutral and ionic complexes. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s2053273317086223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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11
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Quirce S, Luna C, Acosta M, Kovacs I, Belmonte C, Gallar J. Effects of TRPM8 and TRPV1 agonists on the neural activity of corneal cold thermoreceptors in tear-deficient guinea pigs. Acta Ophthalmol 2016. [DOI: 10.1111/j.1755-3768.2016.0690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Orlos Z, Rakoczi E, Misak O, Lenart B, Ocsai G, Kovacs I, Gorzsas S, Kardos L, Lampe Z, Szilvassy Z, Varkonyi I. Outbreak of anthrax in adults and adolescents: a review of nine cases in a regional teaching hospital in East Hungary. Clin Microbiol Infect 2016; 23:52-54. [PMID: 26794029 DOI: 10.1016/j.cmi.2015.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/06/2015] [Accepted: 11/28/2015] [Indexed: 10/22/2022]
Affiliation(s)
- Z Orlos
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary
| | - E Rakoczi
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary
| | - O Misak
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary
| | - B Lenart
- Kenezy Gyula Teaching County Hospital and Outpatient Clinic, Debrecen, Hungary
| | - G Ocsai
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary
| | - I Kovacs
- Department of Pathology, Debrecen, Hungary
| | - S Gorzsas
- Department of Traumatology and Hand Surgery, Debrecen, Hungary
| | - L Kardos
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary
| | - Z Lampe
- Kenezy Gyula Teaching County Hospital and Outpatient Clinic, Debrecen, Hungary
| | - Z Szilvassy
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - I Varkonyi
- Institute of Clinical Pharmacology, Infectious Diseases and Allergies, Debrecen, Hungary.
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13
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Drabik G, Józsa T, Ruzsnavszky O, Kistamás K, Dienes B, Kovacs I, Benyó M, Flaskó T. Correlation between the androgen receptor status of the appendix testis and the efficacy of human chorionic gonadotropin treatment in undescended testis. Int Urol Nephrol 2015; 47:1235-9. [DOI: 10.1007/s11255-015-1037-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 06/13/2015] [Indexed: 10/23/2022]
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14
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Bianchi E, Ripandelli G, Feher J, Plateroti AM, Plateroti R, Kovacs I, Plateroti P, Taurone S, Artico M. Occlusion of retinal capillaries caused by glial cell proliferation in chronic ocular inflammation. Folia Morphol (Warsz) 2015; 74:33-41. [PMID: 25792393 DOI: 10.5603/fm.2015.0006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 04/02/2014] [Accepted: 04/09/2014] [Indexed: 11/25/2022]
Abstract
The inner blood-retinal barrier is a gliovascular unit in which glial cells surround capillary endothelial cells and regulate retinal capillaries by paracrine interactions. During chronic ocular inflammation, microvascular complications can give rise to vascular proliferative lesions, which compromise visual acuity. This pathologic remodelling caused by proliferating Müller cells determines occlusion of retinal capillaries. The aim of the present study was to identify qualitative and quantitative alterations in the retinal capillaries in patients with post-traumatic chronic ocular inflammation or post-thrombotic vascular glaucoma. Moreover, we investigated the potential role of vascular endothelial growth factor (VEGF) and pro-inflammatory cytokines in retinal inflammation. Our electron microscopy findings demonstrated that during chronic ocular inflammation, thickening of the basement membrane, loss of pericytes and endothelial cells and proliferation of Müller cells occur with irreversible occlusion of retinal capillaries. Angiogenesis takes place as part of a regenerative reaction that results in fibrosis. We believe that VEGF and pro-inflammatory cytokines may be potential therapeutic targets in the treatment of this disease although further studies are required to confirm these findings.
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15
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Simandi Z, Czipa E, Horvath A, Koszeghy A, Bordas C, Póliska S, Juhász I, Imre L, Szabó G, Dezso B, Barta E, Sauer S, Karolyi K, Kovacs I, Hutóczki G, Bognár L, Klekner Á, Szucs P, Bálint BL, Nagy L. PRMT1 and PRMT8 Regulate Retinoic Acid-Dependent Neuronal Differentiation with Implications to Neuropathology. Stem Cells 2015; 33:726-41. [DOI: 10.1002/stem.1894] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 10/16/2014] [Accepted: 10/22/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Zoltan Simandi
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - Erik Czipa
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - Attila Horvath
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - Aron Koszeghy
- Department of Physiology; University of Debrecen; Debrecen Hungary
| | - Csilla Bordas
- Department of Physiology; University of Debrecen; Debrecen Hungary
| | - Szilárd Póliska
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - István Juhász
- Department of Dermatology; University of Debrecen; Debrecen Hungary
- Department of Surgery and Operative Techniques; Faculty of Dentistry University of Debrecen; Debrecen Hungary
| | - László Imre
- Department of Biophysics and Cell biology; University of Debrecen; Debrecen Hungary
| | - Gábor Szabó
- Department of Biophysics and Cell biology; University of Debrecen; Debrecen Hungary
| | - Balazs Dezso
- Department of Pathology; University of Debrecen; Debrecen Hungary
| | - Endre Barta
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - Sascha Sauer
- Otto Warburg Laboratory; Max Planck Institute for Molecular Genetics; Berlin Germany
| | - Katalin Karolyi
- Department of Pathology; Kenézy Hospital and Outpatient Clinic; Debrecen Hungary
| | - Ilona Kovacs
- Department of Pathology; Kenézy Hospital and Outpatient Clinic; Debrecen Hungary
| | - Gábor Hutóczki
- Department of Neurosurgery; University of Debrecen; Debrecen Hungary
| | - László Bognár
- Department of Neurosurgery; University of Debrecen; Debrecen Hungary
| | - Álmos Klekner
- Department of Neurosurgery; University of Debrecen; Debrecen Hungary
| | - Peter Szucs
- Department of Physiology; University of Debrecen; Debrecen Hungary
- MTA-DE-NAP B-Pain Control Group; University of Debrecen; Debrecen Hungary
| | - Bálint L. Bálint
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
| | - Laszlo Nagy
- Department of Biochemistry and Molecular Biology; University of Debrecen; Debrecen Hungary
- MTA-DE “Lendulet” Immunogenomics Research Group; University of Debrecen; Debrecen Hungary
- Sanford-Burnham Medical Research Institute at Lake Nona; Orlando Florida USA
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16
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Mikó-Baráth E, Markó K, Budai A, Török B, Kovacs I, Jandó G. Maturation of cyclopean visual evoked potential phase in preterm and full-term infants. Invest Ophthalmol Vis Sci 2014; 55:2574-83. [PMID: 24644050 DOI: 10.1167/iovs.14-13906] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE P1 is the major positive component of pattern-reversal visual evoked potentials (PR-VEPs). The rapid decrease of its latency correlates with the progressive myelination in the developing infant brain, which affects signal transmission in the visual system. An age-dependent phase shift, analogous to P1 peak latency, can be observed in dynamic random dot correlogram (DRDC)-evoked VEPs (DRDC-VEPs), a method used to assess binocular function. Our goal was to study the relationship between cyclopean DRDC-VEP phases and PR-VEP P1 latencies in full-term and preterm infants so as to further explore the experience dependence of early binocular developmental processes. METHODS DRDC-VEPs and PR-VEPs were recorded in 128 full-term and 47 preterm healthy infants and toddlers. DRDC stimuli were presented on the red and green channels of a CRT monitor while infants wore red-green goggles for dichoptic viewing. Reliability of VEP responses was assessed by the statistic. Logistic function was fit to the phase and latency data as a function of age, and goodness of fit was assessed by analysis of residuals. RESULTS The phase shift of DRDC-VEPs and the rapid decrease of P1 latencies occur at identical postconceptual ages. A correlation also was found between P1 latencies and DRDC-VEP phases. CONCLUSIONS Although development of binocularity is an extremely experience-dependent process, our data suggest that DRDC-VEP phase and P1 latency mature independently from visual experience. We propose that both the phase shift and decreasing P1 latency are indicators of myelination and increasingly faster signal transmission in the developing visual system.
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Affiliation(s)
- Eszter Mikó-Baráth
- Institute of Physiology, Medical School of Pécs, University of Pécs, Pécs, Hungary
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17
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Balogh N, Khoor S, Szuszai T, Kecskes I, Kecskemethy P, Fugedi K, Simon I, Kovacs I, Khoor M, Rubicsek S. Predicting the transition to acute heart failure by refined multiscale entropy analysis of heart rate variability in chronic heart failure patients. J Electrocardiol 2013. [DOI: 10.1016/j.jelectrocard.2013.09.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Benedek IS, Chitu M, Kovacs I, Benedek IJR, Suciu ZS, Benedek T. Intracoronary infusion of stem cells reduces local atherosclerosis progression on long term follow-up - an Angio CT multislice 64 study. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Benedek IS, Chitu M, Kovacs I, Suciu ZS, Blendea C, Bucur O, Benedek T. Characterisation of plaque progression pattern associated with in-stent restenosis using a complex Angio CT multislice, VH-IVUS and OCT assessment. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Silverstein SM, Keane BP, Barch DM, Carter CS, Gold JM, Kovacs I, MacDonald A, Ragland JD, Strauss ME. Test-Retest Reliability of a Contour Integration Test in Samples of Healthy Control and Schizophrenia Subjects. J Vis 2012. [DOI: 10.1167/12.9.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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21
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Abstract
Williams Syndrome is a genetically determined neurodevelopmental disorder characterized by an uneven cognitive profile and surprisingly large neurobehavioral differences among individuals. Previous studies have already shown different forms of memory deficiencies and learning difficulties in WS. Here we studied the capacity of WS subjects to improve their performance in a basic visual task. We employed a contour integration paradigm that addresses occipital visual function, and analyzed the initial (i.e. baseline) and after-learning performance of WS individuals. Instead of pooling the very inhomogeneous results of WS subjects together, we evaluated individual performance by expressing it in terms of the deviation from the average performance of the group of typically developing subjects of similar age. This approach helped us to reveal information about the possible origins of poor performance of WS subjects in contour integration. Although the majority of WS individuals showed both reduced baseline and reduced learning performance, individual analysis also revealed a dissociation between baseline and learning capacity in several WS subjects. In spite of impaired initial contour integration performance, some WS individuals presented learning capacity comparable to learning in the typically developing population, and vice versa, poor learning was also observed in subjects with high initial performance levels. These data indicate a dissociation between factors determining initial performance and perceptual learning.
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Affiliation(s)
- Patricia Gervan
- Department of Cognitive Science, Budapest University of Technology and Economics, Budapest, Hungary.
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22
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Gold JM, Barch DM, Carter CS, Dakin S, Luck SJ, MacDonald AW, Ragland JD, Ranganath C, Kovacs I, Silverstein SM, Strauss M. Clinical, functional, and intertask correlations of measures developed by the Cognitive Neuroscience Test Reliability and Clinical Applications for Schizophrenia Consortium. Schizophr Bull 2012; 38:144-52. [PMID: 22101961 PMCID: PMC3245578 DOI: 10.1093/schbul/sbr142] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The goal of the Cognitive Neuroscience Test Reliability and Clinical Applications for Schizophrenia (CNTRACS) Consortium was to develop measures of discrete cognitive processes, allowing for the interpretation of specific deficits that could be linked to specific neural systems. Here we report on the intertask, clinical, and functional correlates of the 4 tasks that were investigated in large groups of patients with schizophrenia (>100) and healthy controls (>73) at 5 sites across the United States. In both healthy and patient groups, the key dependent measures from the CNTRACS tasks were minimally intercorrelated, suggesting that they are measuring discrete abilities. Correlations were examined between CNTRACS tasks and measures of functional capacity, premorbid IQ, symptom severity, and level of community functioning. Performance on tasks measuring relational memory encoding, goal maintenance, and visual gain control were correlated with premorbid IQ and the former 2 tasks with the functional capacity. Goal maintenance task performance was negatively correlated with negative symptom severity and informant reports of community function. These correlations reflect the relationship of specific abilities with functional outcome. They are somewhat lower than functional outcome correlations observed with conventional neuropsychological tests that confound multiple cognitive and motivational deficits. The measures of visual integration and gain control were not significantly correlated with clinical symptoms or function. These results suggest that the CNTRACS tasks measure discrete cognitive abilities, some of which relate to aspects of functional capacity/outcome in schizophrenia.
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Affiliation(s)
- James M Gold
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, PO Box 21247, Baltimore, MD 21228, USA.
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23
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Vijayan S, Khanji M, Ionescu A, Vijayan S, Ionescu A, Podoleanu C, Frigy A, Ugri A, Varga A, Podoleanu D, Incze A, Carasca E, Dobreanu D, Mjolstad O, Dalen H, Graven T, Kleinau J, Hagen B, Fu H, Liu T, Li J, Liu C, Zhou C, Li G, Bordese R, Capriolo M, Brero D, Salvetti I, Cannillo M, Antolini M, Grosso Marra W, Frea S, Morello M, Gaita F, Maffessanti F, Caiani E, Muraru D, Tuveri F, Dal Bianco L, Badano L, Majid A, Soesanto A, Ario Suryo Kuncoro B, Sukmawan R, Ganesja MH, Benedek T, Chitu M, Beata J, Suciu Z, Kovacs I, Bucur O, Benedek I, Hrynkiewicz-Szymanska A, Szymanski F, Karpinski G, Filipiak K, Radunovic Z, Lande Wekre L, Steine K, Bech-Hanssen O, Rundqvist B, Lindgren F, Selimovic N, Jedrzychowska-Baraniak J, Jozwa R, Larysz B, Kasprzak J, Ripp T, Mordovin V, Ripp E, Ciobanu A, Dulgheru R, Dragoi R, Magda S, Florescu M, Mihaila S, Rimbas R, Cinteza M, Vinereanu D, Benavides-Vallve C, Pelacho B, Iglesias O, Castano S, Munoz-Barrutia A, Prosper F, Ortiz De Solorzano C, Manouras A, Sahlen A, Winter R, Vardas P, Brodin L, Sarvari SI, Haugaa KH, Zahid W, Bendz B, Aaberge L, Edvardsen T, Di Bella G, Pedri S, Donato R, Madaffari A, Zito C, Stapf D, Schreckenberg M, Carerj S, Yoshikawa H, Suzuki M, Kusunose Y, Hashimoto G, Otsuka T, Nakamura M, Sugi K, Grapsa J, Dawson D, Gin-Sing W, Howard L, Gibbs J, Nihoyannopoulos P, Smith B, Grapsa J, Dawson D, Coulter T, Rendon A, Gorissen W, Nihoyannopoulos P, Shiran A, Asmer I, Adawi S, Ganaeem M, Shehadeh J, Cameli M, Lisi M, Righini F, Maccherini M, Sani G, Galderisi M, Mondillo S, Kalimanovska-Ostric D, Nastasovic T, Jovanovic I, Milakovic B, Dostanic M, Stosic M, Sasic I, Sveen K, Nerdrum T, Hanssen K, Dahl-Jorgensen K, Steine K, Holte E, Vegsundvaag J, Hole T, Hegbom K, Wiseth R, Ikonomidis I, Lekakis J, Tritakis V, Papadakis I, Kadoglou N, Tzortzis S, Trivilou P, Koukoulis C, Paraskevaidis I, Anastasiou-Nana M, Smedsrud MK, Sarvari S, Haugaa KH, Gjesdal O, Aaberge L, Edvardsen T, Muraru D, Beraldo M, Solda' E, Cucchini U, Peluso D, Tuveri M, Al Mamary A, Badano L, Iliceto S, Dores H, Abecasis J, Carvalho M, Santos M, Andrade M, Ribeiras R, Reis C, Horta E, Gouveia R, Mendes M, Zaliaduonyte-Peksiene D, Mizariene V, Cesnaite G, Tamuleviciute E, Jurkevicius R, Vaskelyte J, Zaliunas R, Smarz K, Zaborska B, Jaxa-Chamiec T, Maciejewski P, Budaj A, Trifunovic D, Sobic-Saranovic D, Stankovic S, Ostojic M, Vujisic-Tesic B, Petrovic M, Nedeljkovic I, Banovic M, Tesic M, Petrovic I, Peovska I, Srbinovska E, Maksimovic J, Andova V, Arnaudova F, Hristova E, Otljanska M, Vavlukis M, Jovanova S, Tamborini G, Fusini L, Gripari P, Muratori M, Pontone G, Andreini D, Bertella E, Ghulam Ali S, Bartorelli A, Pepi M, Zito C, Cusma-Piccione M, Salvia J, Antonini-Canterin F, Lentini S, Di Bella G, Donato D, Miceli M, Oreto G, Carerj S, Shiran A, Adawi S, Sachner R, Asmer I, Ganaeem M, Rubinshtein R, Shnapp M, Gaspar T, Marchese A, Deste W, Sanfilippo A, Aruta P, Patane M, Millan G, Ussia G, Tamburino C, Banovic M, Vujisic-Tesic B, Kujacic V, Obradovic S, Nedeljkovic I, Trifunovic D, Petrovic M, Crkvenac Z, Ostojic M, Bernard A, Piquemal M, Muller G, Arbeille P, Charbonnier B, Broyd C, Davies J, Mikhail G, Mayet J, Francis D, Rosca M, Magne J, Szymanski C, Popescu B, Ginghina C, Pierard L, Lancellotti P, Gonzalez-Mansilla A, Solis J, Angulo R, Perez-David E, Madrid G, Garcia-Robles J, Yotti R, Prieto R, Bermejo J, Fernandez-Aviles F, Otsuka T, Suzuki M, Yoshikawa H, Ishikawa Y, Ishida T, Osaki T, Matsuyama M, Yamashita H, Ozaki S, Sugi K, Stevanella M, Votta E, Fusini L, Veronesi F, Tamborini G, Pepi M, Maffessanti F, Alamanni F, Redaelli A, Caiani E, Park SD, Lee J, Shin S, Woo S, Kim D, Park K, Kwan J, Tsang W, Chandra S, Weinert L, Gayat E, Djelassi M, Balbach T, Mor-Avi V, Lang R, De Meester P, Van De Bruaene A, Delcroix M, Budts W, Abid L, Frikha Z, Makni K, Rekik H, Znazen A, Mourad H, Kammoun S, Sargento L, Satendra M, Sousa C, Lopes S, Longo S, Lousada N, Palma Reis R, Fouad D, Shams Eldeen R, Rosca M, Popescu B, Beladan C, Calin A, Voinea F, Enache R, Jurcut R, Coman I, Ghionea M, Ginghina C, Tesic M, Djordjevic-Dikic A, Trifunovic D, Petrovic O, Nedeljkovic I, Petrovic M, Boricic M, Giga V, Ostojic M, Vujisic-Tesic B, Pisciella L, Lanzillo C, Minati M, Caselli S, Di Roma M, Fratini S, Romano S, Calo' L, Lioy E, Penco M, Finocchiaro G, Pinamonti B, Merlo M, Barbati G, Sinagra G, Finocchiaro G, Pinamonti B, Merlo M, Barbati G, Dilenarda A, Sinagra G, Comenale Pinto S, Ancona R, Caso P, Cavallaro C, Vecchione F, D'onofrio A, Fero' M, Calabro' R, Gustafsson S, Ihse E, Henein M, Westermark P, Suhr O, Lindqvist P, Oliva Sandoval M, Gonzalez Carrillo M, Garcia Navarro M, Garcia-Molina Saez E, Sabater Molina M, Saura Espin D, Lacunza Ruiz J, Gimeno Blanes J, De La Morena Valenzuela G, Valdes Chavarri M, Prinz C, Faber L, Horstkotte D, Hoetz H, Voigt J, Dores H, Gandara F, Correia M, Abecasis J, Rosario I, Fonseca C, Arroja I, Aleixo A, Martins A, Mendes M, Radulescu L, Dan Radulescu D, Parv Andreea P, Duncea Caius D, Ciuleanu T C, Mitrea Paulina M, Frea S, Capriolo M, Grosso Marra W, Cali Quaglia F, Bordese R, Ribezzo M, Boffini M, Rinaldi M, Gaita F, Morello M, Maceira Gonzalez AM, Cosin-Sales J, Dalli E, Diago J, Aguilar J, Ruvira J, Sousa C, Goncalves S, Gomes A, Pinto F, Tsai WC, Liu YW, Shih JY, Huang YY, Chen JY, Tsai LM, Chen JH, Sargento L, Satendra M, Longo S, Lousada N, Palma Reis R, Ribeiro S, Doroteia D, Goncalves S, Santos L, David C, Vinhas De Sousa G, Almeida A, Iwase M, Itou Y, Yasukochi S, Shiino K, Inuzuka H, Sugimoto K, Ozaki Y, Gieszczyk-Strozik K, Sikora-Puz A, Mizia M, Lasota B, Chmiel A, Lis-Swiety A, Michna J, Brzezinska-Wcislo L, Mizia-Stec K, Gasior Z, Luijendijk P, De Bruin-Bon H, Zwiers C, Vriend J, Van Den Brink R, Mulder B, Bouma B, Brigido S, Gianfagna P, Proclemer A, Plicht B, Kahlert P, Kaelsch H, Buck T, Erbel R, Konorza T, Yoon H, Kim K, Ahn Y, Jeong M, Cho J, Park J, Kang J, Rha W, Jansen Klomp WW, Brandon Bravo Bruinsma G, Van 'T Hof A, Spanjersberg S, Nierich A, Bombardini T, Gherardi S, Picano E, Ciarka A, Herbots L, Eroglu E, Van Cleemput J, Droogne W, Jasityte R, Meyns B, Voigt J, D'hooge J, Vanhaecke J, Al Barjas M, Iskreva R, Morris R, Davar J, Zhao Y, Lindqvist P, Holmgren A, Morner S, Henein M, Nedeljkovic I, Ostojic M, Giga V, Stepanovic J, Djordjevic-Dikic A, Beleslin B, Nedeljkovic M, Banovic M, Mazic S, Stojanov V, Piatkowski R, Kochanowski J, Scislo P, Grabowski M, Marchel M, Roik M, Kosior D, Opolski G, Tomaszewski A, Kutarski A, Tomaszewski M, Eibel S, Hasheminejad E, Mukherjee C, Tschernich H, Ender J, Delithanasis I, Celutkiene J, Kenny C, Monaghan M, Van Den Oord S, Ten Kate G, Akkus Z, Renaud G, Sijbrands E, Ten Cate F, De Jong N, Bosch J, Van Der Steen A, Schinkel A, Lisowska A, Knapp M, Tycinska A, Sawicki R, Kralisz P, Sobkowicz B, Chang SA, Lee SC, Kim EY, Hahm SH, Ahn GT, Sohn MK, Park SJ, Choi JO, Park SW, Oh JK, Gursoy MO, Gokdeniz T, Astarcioglu M, Bayram Z, Cakal B, Karakoyun S, Kalcik M, Kahveci G, Yildiz M, Ozkan M, Muraru D, Dal Bianco L, Solda' E, Cucchini U, Peluso D, Tuveri M, Al Mamary A, Badano L, Iliceto S, Skidan V, Borowski A, Park M, Thomas J, Ranjbar S, Hassantash S, Karvandi M, Foroughi M, Davidsen ES, Cramariuc D, Bleie O, Gerdts E, Matre K, Cusma' Piccione M, Zito C, Bagnato G, Di Bella G, Mohammed M, Piluso S, Oreto L, Oreto G, Bagnato G, Carerj S, Prinz C, Bitter T, Faber L, Horstkotte D, Dores H, Abecasis J, Carvalho S, Santos M, Andrade M, Ribeiras R, Canada M, Reis C, Gouveia R, Mendes M, Santisteban Sanchez De Puerta M, Mesa Rubio MD, Ruiz Ortiz M, Delgado Ortega M, Pena Pena ML, Puentes Chiachio M, Suarez De Lezo Cruz-Conde J, Pan Alvarez-Ossorio M, Mazuelos Bellido F, Suarez De Lezo Herreros De Tejada J, Altekin E, Yanikoglu A, Karakas S, Oncel C, Akdemir B, Belgi Yildirim A, Cilli A, Yilmaz H, Lenartowska L, Furdal M, Knysz B, Konieczny A, Lewczuk J, Comenale Pinto S, Ancona R, Caso P, Severino S, Cavallaro M, Coppola M, Calabro' R, Motoki H, To A, Bhargava M, Wazni O, Marwick T, Klein A, Sinkovskaya E, Horton S, Abuhamad A, Mingo Santos S, Monivas Palomero V, Beltran Correas B, Mitroi C, Gutierrez Landaluce C, Garcia Lunar I, Gonzalez Mirelis J, Cavero M, Segovia Cubero J, Alonso Pulpon L, Gurel E, Karaahmet T, Tigen K, Kirma C, Dundar C, Pala S, Isiklar I, Cevik C, Kilicgedik A, Basaran Y, Brambatti M, Romandini A, Barbarossa A, Molini S, Urbinati A, Giovagnoli A, Cipolletta L, Capucci A, Park S, Choi E, Ahn C, Hong S, Kim M, Lim D, Shim W, Xie J, Fang F, Zhang Q, Chan J, Yip G, Sanderson J, Lam Y, Yan B, Yu C, Jorge Perez P, De La Rosa Hernandez A, Hernandez Garcia C, Duque Garcia A, Barragan Acea A, Arroyo Ucar E, Jimenez Rivera J, Lacalzada Almeida J, Laynez Cerdena I, Maffessanti F, Gripari P, Pontone G, Andreini D, Tamborini G, Carminati C, Pepi M, Caiani E, Capoulade R, Larose E, Clavel M, Dumesnil J, Arsenault M, Bedard E, Mathieu P, Pibarot P, Gargani L, Baldi G, Forfori F, Caramella D, D'errico L, Abramo A, Sicari R, Picano E, Giunta F, Lee WN, Larrat B, Messas E, Pernot M, Tanter M, Velagic V, Cikes M, Matasic R, Skorak I, Skorak I, Samardzic J, Puljevic D, Lovric Bencic M, Biocina B, Milicic D, Roosens B, Bala G, Droogmans S, Hostens J, Somja J, Delvenne E, Schiettecatte J, Lahoutte T, Van Camp G, Cosyns B, Ghosh A, Hardy R, Chaturvedi N, Francis D, Deanfield J, Pellerin D, Kuh D, Hughes A, Malmgren A, Dencker M, Stagmo M, Gudmundsson P, Seo Y, Ishizu T, Aonuma K, Schuuring MJ, Vis J, Bouma B, Van Dijk A, Van Melle J, Pieper P, Vliegen H, Sieswerda G, Mulder B, Foukarakis E, Pitarokilis A, Kafarakis P, Kiritsi A, Klironomos E, Manousakis A, Fragiadaki X, Papadakis E, Dermitzakis A. Poster Session 1: Thursday 8 December 2011, 08:30-12:30 * Location: Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Gong L, Ye Z, Zeng Z, Xia M, Zhong Y, Yao Y, Lee E, Ionescu A, Dwivedi G, Mahadevan G, Jiminez D, Frenneaux M, Steeds R, Moore C, Samad Z, Jackson K, Castellucci J, Kisslo J, Von Ramm O, D'ascenzi F, Zaca' V, Cameli M, Lisi M, Natali B, Malandrino A, Mondillo S, Barbier P, Guerrini U, Franzosi M, Castiglioni L, Nobili E, Colazzo F, Li Causi T, Sironi L, Tremoli E, Clausen H, Macdonald S, Basaggianis C, Newton J, Cameli M, Lisi M, Bennati E, Reccia R, Malandrino A, Bigio E, Maccherini M, Chiavarelli M, Henein M, Mondillo S, Floria M, Jamart J, Arsenescu Georgescu C, Mantovani F, Barbieri A, Bursi F, Valenti C, Quaglia M, Modena M, Kutty S, Gribben P, Padiyath A, Polak A, Scott C, Waiss M, Danford D, Bech-Hanssen O, Selimovic N, Rundqvist B, Schmiedel L, Hohmann C, Katzke S, Haacke K, Rauwolf T, Strasser R, Tumasyan LR, Adamyan K, Kosmala W, Derzhko R, Przewlocka-Kosmala M, Mysiak A, Stachowska B, Jedrzejuk D, Bednarek-Tupikowska G, Chrzanowski L, Kasprzak J, Wojciechowska C, Wita K, Busz-Papiez B, Gasior Z, Mizia-Stec K, Kukulski T, Gosciniak P, Sinkiewicz W, Moelmen H, Stoylen A, Thorstensen A, Torp H, Dalen H, Groves A, Nicholson G, Lopez L, Goh CW, Ahn H, Byun Y, Kim J, Park J, Lee J, Park J, Kim B, Rhee K, Kim K, Park J, Yoon H, Hong Y, Park H, Kim J, Ahn Y, Jeong M, Cho J, Kang J, Grapsa J, Dawson D, Karfopoulos K, Jakaj G, Punjabi P, Nihoyannopoulos P, Ruisanchez Villar C, Lerena Saenz P, Gonzalez Vilchez F, Gonzalez Fernandez C, Zurbano Goni F, Cifrian Martinez J, Mons Lera R, Ruano Calvo J, Martin Duran R, Vazquez De Prada Tiffe J, Pietrzak R, Werner B, Voillot D, Huttin O, Zinzius P, Schwartz J, Sellal J, Lemoine S, Christophe C, Popovic B, Juilliere Y, Selton-Suty C, Ishii K, Furukawa A, Nagai T, Kataoka K, Seino Y, Shimada K, Yoshikawa J, Tekkesin A, Yildirimturk O, Tayyareci Y, Yurdakul S, Aytekin S, Jaroch J, Loboz-Grudzien K, Bociaga Z, Kowalska A, Kruszynska E, Wilczynska M, Dudek K, Kakihara R, Naruse C, Hironaka H, Tsuzuku T, Cucchini U, Muraru D, Badano L, Solda' E, Tuveri M, Al Nono O, Sarais C, Iliceto S, Santos L, Cortez-Dias N, Ribeiro S, Goncalves S, Jorge C, Carrilho-Ferreira P, Silva D, Silva-Marques J, Lopes M, Diogo A, Hristova K, Vassilev D, Pavlov P, Katova T, Simova I, Kostova V, Esposito R, Santoro A, Schiano Lomoriello V, Raia R, De Palma D, Dores E, De Simone G, Galderisi M, Zaborska B, Makowska E, Pilichowska E, Maciejewski P, Bednarz B, Wasek W, Stec S, Budaj A, Spinelli L, Morisco C, Assante Di Panzillo E, Crispo S, Di Marino S, Trimarco B, Santoro A, Schiano Lomoriello V, Esposito R, Farina F, Innelli P, Rapacciuolo A, Galderisi M, Polgar B, Banyai F, Rokusz L, Tomcsanyi I, Vaszily M, Nieszner E, Borsanyi T, Kerecsen G, Preda I, Kiss RG, Bull S, Suttie J, Augustine D, Francis J, Karamitsos T, Becher H, Prendergast B, Neubauer S, Myerson S, Lodge F, Broyd C, Milton P, Mikhail G, Mayet J, Davies J, Francis D, Clavel MA, Ennezat PV, Marechaux S, Dumesnil J, Bellouin A, Bergeron S, Meimoun P, Le Tourneau T, Pasquet A, Pibarot P, Herrmann S, Stoerk S, Niemann M, Hu K, Voelker W, Ertl G, Weidemann F, Tayyareci Y, Yurdakul S, Yildirimturk O, Aytekin V, Aytekin S, Kogoj P, Ambrozic J, Bunc M, Di Salvo G, Rea A, Castaldi B, Gala S, D'aiello A, Mormile A, Pisacane F, Pacileo G, Russo M, Calabro R, Nguyen L, Ricksten SE, Jeppsson A, Schersten H, Bech-Hanssen O, Boerlage-Van Dijk K, Yong Z, Bouma B, Koch K, Vis M, Piek J, Baan J, Scandura S, Ussia G, Caggegi A, Cammalleri V, Sarkar K, Mangiafico S, Chiaranda' M, Imme' S, Pistritto A, Tamburino C, Ring L, Nair S, Wells F, Shapiro L, Rusk R, Rana B, Madrid Marcano G, Solis Martin J, Gonzalez Mansilla A, Bravo L, Menarguez Palanca C, Munoz P, Bouza E, Yotti R, Bermejo Thomas J, Fernandez Aviles F, Tamayo T, Denes M, Balint O, Csepregi A, Csillik A, Erdei T, Temesvari A, Fernandez-Pastor J, Linde-Estrella A, Cabrera-Bueno F, Pena-Hernandez J, Barrera-Cordero A, Alzueta-Rodriguez F, De Teresa-Galvan E, Merlo M, Pinamonti M, Finocchiaro G, Pyxaras S, Barbati G, Buiatti A, Dilenarda A, Sinagra G, Kuperstein R, Freimark D, Hirsch S, Feinberg M, Arad M, Mitroi C, Garcia Lunar I, Monivas Palomero V, Mingo Santos S, Beltran Correas P, Gonzalez Lopez E, Garcia Pavia P, Gonzalez Mirelis J, Cavero Gibanel M, Alonso Pulpon L, Finocchiaro G, Pinamonti B, Merlo M, Barbati G, Dilenarda A, Sinagra G, Zaidi A, Ghani S, Sheikh N, Gati S, Howes R, Sharma R, Sharma S, Calcagnino M, O'mahony C, Coats C, Cardona M, Garcia A, Murphy E, Lachmann R, Mehta A, Hughes D, Elliott P, Di Bella G, Madaffari A, Donato R, Mazzeo A, Casale M, Zito C, Vita G, Carerj S, Marek D, Indrakova J, Rusinakova Z, Skala T, Kocianova E, Taborsky M, Musca F, De Chiara B, Belli O, Cataldo S, Brunati C, Colussi G, Quattrocchi G, Santambrogio G, Spano F, Moreo A, Rustad L, Nytroen K, Gullestad L, Amundsen B, Aakhus S, Maroz-Vadalazhskaya N, Shumavetc V, Kurganovich S, Seljun Y, Ostrovskiy A, Ostrovskiy Y, Rustad L, Nytroen K, Segers P, Amundsen B, Aakhus S, Przewlocka-Kosmala M, Orda A, Karolko B, Mysiak A, Driessen MMP, Eising JB, Uiterwaal C, Van Der Ent CK, Meijboom FJ, Shang Q, Tam L, Sun J, Sanderson J, Zhang Q, Li E, Yu C, Arroyo Ucar E, De La Rosa Hernandez A, Hernandez Garcia C, Jorge Perez P, Lacalzada Almeida J, Jimenez Rivera J, Duque Garcia A, Barragan Acea A, Laynez Cerdena I, Kaldararova M, Simkova I, Pacak J, Tittel P, Masura J, Tadic M, Ivanovic B, Zlatanovic M, Damjanov N, Maggiolini S, Gentile G, Bozzano A, Suraci S, Meles E, Carbone C, Tempesta A, Malafronte C, Piatti L, Achilli F, Luijendijk P, Stevens A, De Bruin-Bon H, Vriend J, Van Den Brink R, Vliegen H, Mulder B, Bouma B, Chow V, Ng A, Chung T, Kritharides L, Iancu M, Serban M, Craciunescu I, Hodo A, Ghiorghiu I, Popescu B, Ginghina C, Styczynski G, Szmigielski CA, Kaczynska A, Leszczynski J, Rosinski G, Kuch-Wocial A, Slavich M, Ancona M, Fisicaro A, Oppizzi M, Marone E, Bertoglio L, Melissano G, Margonato A, Chiesa R, Agricola E, Zito C, Mohammed M, Cusma-Piccione M, Piluso S, Arcidiaco S, Nava R, Giuffre R, Ciraci L, Ferro M, Carerj S, Uusitalo V, Luotolahti M, Pietila M, Wendelin-Saarenhovi M, Hartiala J, Saraste M, Knuuti J, Saraste A, Kochanowski J, Scislo P, Piatkowski R, Grabowski M, Marchel M, Roik M, Kosior D, Opolski G, Bartko PE, Graf S, Khorsand A, Rosenhek R, Burwash I, Beanlands R, Clavel MA, Baumgartner H, Pibarot P, Mundigler G, Kudrnova S, Apor A, Huttl H, Kudrnova S, Apor A, Huttl H, Mori F, Santoro G, Oddo A, Rosso G, Meucci F, Pieri F, Squillantini G, Gensini G, Scislo P, Kochanowski J, Piatkowski R, Roik M, Postula M, Opolski G, Park DG, Hong JY, Kim SE, Lee JH, Han KR, Oh DJ, Muraru D, Dal Bianco L, Beraldo M, Solda' E, Cucchini U, Peluso D, Tuveri M, Al Mamary A, Badano L, Iliceto S, Aggeli C, Felekos I, Poulidakis E, Pietri P, Roussakis G, Siasos G, Stefanadis C, Furukawa A, Hoshiba H, Miyasaka C, Sato H, Nagai T, Yamanaka A, Kataoka K, Seino Y, Ishii K, Lilli A, Baratto M, Magnacca M, Comella A, Poddighe R, Talini E, Canale M, Chioccioli M, Del Meglio J, Casolo G, Kuznetsov VA, Melnikov NN, Krinochkin DV, Calin A, Enache R, Popescu B, Beladan C, Rosca M, Lupascu L, Purcarea F, Calin C, Gurzun M, Ginghina C, Dulgheru R, Ciobanu A, Magda S, Mihaila S, Rimbas R, Margulescu A, Cinteza M, Vinereanu D, Sumin AN, Arhipov O, Yoon J, Moon J, Rim S, Nyktari E, Patrianakos A, Solidakis G, Psathakis E, Parthenakis F, Vardas P, Kordybach M, Kowalski M, Kowalik E, Hoffman P, Nagy KV, Kutyifa V, Edes E, Apor A, Merkely B, Gerlach A, Rost C, Schmid M, Rost M, Flachskampf F, Daniel W, Breithardt O, Altekin E, Karakas S, Yanikoglu A, Er A, Baktir A, Demir I, Deger N, Klitsie L, Hazekamp M, Roest A, Van Der Hulst A, Gesink- Van Der Veer B, Kuipers I, Blom N, Ten Harkel A, Farsalinos K, Tsiapras D, Kyrzopoulos S, Avramidou E, Vasilopoulou D, Voudris V, Werner B, Florianczyk T, Ivanovic B, Tadic M, Kalinowski M, Szulik M, Streb W, Rybus-Kalinowska B, Sliwinska A, Stabryla J, Kukla M, Nowak J, Kukulski T, Kalarus Z, Florescu M, Mihalcea D, Magda L, Suran B, Enescu O, Mincu R, Cinteza M, Vinereanu D, Salerno G, Scognamiglio G, D'andrea A, Dinardo G, Gravino R, Sarubbi B, Disalvo G, Pacileo G, Russo M, Calabro R, Liao JN, Sung S, Chen C, Park S, Shin S, Kim M, Shim S, Yildirimturk O, Helvacioglu F, Ulusoy O, Duran C, Tayyareci Y, Yurdakul S, Aytekin S, Kirschner R, Simor T, Moreo A, Ambrosio G, De Chiara B, Tran T, Raman S, Vidal Perez RC, Carreras F, Leta R, Pujadas S, Barros A, Hidalgo A, Alomar X, Pons-Llado G, Olofsson M, Boman K, Ledakowicz-Polak A, Polak L, Zielinska M, Fontana A, Schirone V, Mauro A, Zambon A, Giannattasio C, Trocino G, Dekleva M, Dungen H, Inkrot S, Gelbrich G, Suzic Lazic J, Kleut M, Markovic Nikolic N, Waagstein F, Khoor S, Balogh N, Simon I, Fugedi K, Kovacs I, Khoor M, Florian G, Kocsis A, Szuszai T, O'driscoll J, Saha A, Smith R, Gupta S, Sharma R, Lenkey Z, Gaszner B, Illyes M, Sarszegi Z, Horvath IG, Magyari B, Molnar F, Cziraki A, Elnoamany MF, Badran H, Ebraheem H, Reda A, Elsheekh N. Poster Session 5: Saturday 10 December 2011, 08:30-12:30 * Location: Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hudak M, Gervan P, Friedrich B, Pastukhov A, Braun J, Kovacs I. Increased readiness for adaptation and faster alternation rates under binocular rivalry in children. Front Hum Neurosci 2011; 5:128. [PMID: 22069386 PMCID: PMC3208241 DOI: 10.3389/fnhum.2011.00128] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 10/17/2011] [Indexed: 11/13/2022] Open
Abstract
Binocular rivalry in childhood has been poorly investigated in the past. Information is scarce with respect to infancy, and there is a complete lack of data on the development of binocular rivalry beyond the first 5-6 years of age. In this study, we are attempting to fill this gap by investigating the developmental trends in binocular rivalry in pre-puberty. We employ a classic behavioral paradigm with orthogonal gratings, and introduce novel statistical measures (after Pastukhov and Braun) to analyze the data. These novel measures provide a sensitive tool to estimate the impact of the history of perceptual dominance on future alternations. We found that the cumulative history of perceptual alternations has an impact on future percepts, and that this impact is significantly stronger and faster in children than in adults. Assessment of the "cumulative history" and its characteristic time-constant helps us to take a look at the adaptive states of the visual system under multi-stable perception, and brings us closer to establishing a possible developmental scenario of binocular rivalry: a greater and faster relative contribution of neural adaptation is found in children, and this increased readiness for adaption seems to be associated with faster alternation rates.
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Balogh N, Khoor S, Khoor M, Fugedi K, Simon I, Kern P, Florian G, Kocsis A, Kovacs I. Forecasting lethal cardiac end points of heart failure patients with low ejection fraction using refined multiscale entropy analysis. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gervan P, Berencsi A, Kovacs I. Vision first? The development of primary visual cortical networks is more rapid than the development of primary motor networks in humans. PLoS One 2011; 6:e25572. [PMID: 21984933 PMCID: PMC3184155 DOI: 10.1371/journal.pone.0025572] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 09/07/2011] [Indexed: 11/28/2022] Open
Abstract
The development of cortical functions and the capacity of the mature brain to learn are largely determined by the establishment and maintenance of neocortical networks. Here we address the human development of long-range connectivity in primary visual and motor cortices, using well-established behavioral measures - a Contour Integration test and a Finger-tapping task - that have been shown to be related to these specific primary areas, and the long-range neural connectivity within those. Possible confounding factors, such as different task requirements (complexity, cognitive load) are eliminated by using these tasks in a learning paradigm. We find that there is a temporal lag between the developmental timing of primary sensory vs. motor areas with an advantage of visual development; we also confirm that human development is very slow in both cases, and that there is a retained capacity for practice induced plastic changes in adults. This pattern of results seems to point to human-specific development of the “canonical circuits” of primary sensory and motor cortices, probably reflecting the ecological requirements of human life.
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Affiliation(s)
- Patricia Gervan
- Department of Cognitive Science, Faculty of Sciences, Budapest University of Technology and Economics, Budapest, Hungary
- Hungarian National Academy - Budapest University of Technology and Economics Cognitive Science Research Group, Budapest, Hungary
| | - Andrea Berencsi
- Hungarian National Academy - Budapest University of Technology and Economics Cognitive Science Research Group, Budapest, Hungary
| | - Ilona Kovacs
- Department of Cognitive Science, Faculty of Sciences, Budapest University of Technology and Economics, Budapest, Hungary
- Hungarian National Academy - Budapest University of Technology and Economics Cognitive Science Research Group, Budapest, Hungary
- * E-mail:
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Silverstein SM, Keane BP, Barch D, Carter C, Gold J, Kovacs I, MacDonald III A, Ragland D, Strauss M. Spatial Range of Contour Integration in Schizophrenia. J Vis 2011. [DOI: 10.1167/11.11.1059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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29
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Silverstein S, Berten S, Essex B, Kovacs I, Susmaras T, Little D. An fMRI examination of contour integration in Schizophrenia. J Vis 2010. [DOI: 10.1167/9.8.904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract
We demonstrate daytime and overnight offline modulations of perceptual learning in a visual integration task. We employed a contour integration task, which requires longer range spatial integration than the more commonly used texture discrimination task, yet, still addresses the earliest cortical processing levels. In order to dissociate the effect of daytime and overnight offline modulations on perceptual learning, we introduced a 12-h shift between the practice times of two groups of subjects. Throughout the five practice sessions, the 12-h shift resulted in stepwise modulation of a typical learning curve, with a phase shift between the two groups. Between sessions (offline) improvement during the day was relatively small and only occurred in the first few sessions, while it was always significant after a night of sleep. Our results extend the body of evidence on the potential role of sleep in perceptual learning and generalize it to integrative visual processes. We have clearly distinguished two phases of learning: both daytime and overnight improvements in the initial phase, and only overnight improvements in the later phase.
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Affiliation(s)
- Patricia Gervan
- Department of Cognitive Science, Budapest University of Technology and Economics, Budapest, Hungary
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Kozma P, Kovacs I, Feher A. Learning only after sleep in a contour integration task. J Vis 2010. [DOI: 10.1167/2.7.71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Bronzetti E, Artico M, Kovacs I, Felici LM, Magliulo G, Vignone D, D'Ambrosio A, Forte F, Di Liddo R, Feher J. Expression of neurotransmitters and neurotrophins in neurogenic inflammation of the rat retina. Eur J Histochem 2007; 51:251-260. [PMID: 18162454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
Antidromic stimulation of the rat trigeminal ganglion triggers the release of substance P (SP) and calcitonin gene-related peptide (CGRP) from sensory nerve terminals of the capsaicin sensitive C-fibers. These pro-inflammatory neuropeptides produce a marked hyperemia in the anterior segment of the eye, accompanied by increased intraocular pressure, breakdown of the blood-aqueous barrier and myosis. To assess the effects of neurogenic inflammation on the retina, specifically on the immunostaining of neurotransmitters and neurotrophins, as well as on the expression of neurotrophin receptors in the retina. RT-PCR was also accomplished in control and stimulated animals to confirm the immunohistochemical results. In the electrically stimulated eyes, immunostaining for SP, CGRP, VIP and nNOS demonstrated a marked increase in the RPE/POS (Retinal Pigment Epithelium/Photoreceptor Outer Segments), in the inner and outer granular layers and in the ganglion cells in comparison to the control eyes. CGRP and SP were found increased in stimulated animals and this result has been confirmed by RT- PCR. Changes in neurotrophin immunostaining and in receptor expression were also observed after electric stimulation of trigeminal ganglia. Decrease of BDNF and NT4 in the outer and inner layers and in ganglion cells was particularly marked. In stimulated rat retinas immunostaining and RT-PCR showed a NGF expression increase. Neurotrophin receptors remained substantially unchanged. These studies demonstrated, for the first time, that antidromic stimulation of the trigeminal ganglion and subsequent neurogenic inflammation affect immunostaining of retinal cell neurotransmitter/neuropeptides and neurotrophins as well as the expression of neurotrophin receptors.
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Affiliation(s)
- Elena Bronzetti
- Department of Cardiovascular, Respiratory and Morphological Sciences, G Ferreri University of Rome La Sapienza, Via A. Borelli 50 - 00161 Rome Italy
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Kemner C, Lamme VAF, Kovacs I, van Engeland H. Integrity of lateral and feedbackward connections in visual processing in children with pervasive developmental disorder. Neuropsychologia 2007; 45:1293-8. [PMID: 17101159 DOI: 10.1016/j.neuropsychologia.2006.09.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2006] [Revised: 09/26/2006] [Accepted: 09/27/2006] [Indexed: 11/21/2022]
Abstract
Enhanced visual detail processing in subjects with pervasive developmental disorder (PDD) has been related to impairments in feature integration. The functional integrity of two types of neuronal connections involved in visual feature integration, namely horizontal and feedbackward connections, were tested. Sixteen children with PDD and 17 age- and IQ-matched control children (mean age 13.3 years) were included. In a texture segregation task the difference in ERP response to homogeneous and checkered visual stimuli was determined. Additionally, in a contour integration task subjects had to point out a contour consisting of colinearly aligned Gabor signals in backgrounds increasing in noise. Children with PDD showed a normal performance on the contour integration task, suggesting that neurons in the primary visual cortex of children with PDD can effectively integrate the activity of local detectors that process different aspects of the same object information by making use of long-range lateral connections. The amplitude of ERP activity related to texture segregation was also not different between the PDD and control groups, indicating functional visual feedback mechanisms between V1 and higher order areas in subjects with PDD. However, a difference in latency of texture-segmentation related activity between the groups was noted. This effect did not reach significance, which could be due to the small N of the study. Therefore, the data need replication in a study with larger samples before more definitive conclusions can be drawn.
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Affiliation(s)
- C Kemner
- Department of Child and Adolescent Psychiatry, University Medical Center Utrecht & Rudolf Magnus Institute for Neurosciences, Utrecht, The Netherlands.
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Heinicke J, Kovacs I, Nyulaszi L. Neue σ
2
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‐PC – O‐Systeme: Stabile nichtkonjugierte Phosphaalkenether – Synthese und Reaktionen. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19911240312] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Ilona Kovacs
- Lehrstuhl für Anorganische Chemie der Technischen Universität Budapest, Gellért té 4, H‐1521 Budapest
| | - Laszlo Nyulaszi
- Lehrstuhl für Anorganische Chemie der Technischen Universität Budapest, Gellért té 4, H‐1521 Budapest
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36
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Kovacs I, Zimmer M, Kovacs G. Electrophysiological correlates of contour integration in human visual cortex. J Vis 2005. [DOI: 10.1167/5.8.974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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37
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Feher J, Kovacs B, Kovacs I, Schveoller M, Papale A, Balacco Gabrieli C. Improvement of visual functions and fundus alterations in early age-related macular degeneration treated with a combination of acetyl-L-carnitine, n-3 fatty acids, and coenzyme Q10. Ophthalmologica 2005; 219:154-66. [PMID: 15947501 DOI: 10.1159/000085248] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2004] [Accepted: 10/22/2004] [Indexed: 11/19/2022]
Abstract
The aim of this randomized, double-blind, placebo-controlled clinical trial was to determine the efficacy of a combination of acetyl-L-carnitine, n-3 fatty acids, and coenzyme Q10 (Phototrop) on the visual functions and fundus alterations in early age-related macular degeneration (AMD). One hundred and six patients with a clinical diagnosis of early AMD were randomized to the treated or control groups. The primary efficacy variable was the change in the visual field mean defect (VFMD) from baseline to 12 months of treatment, with secondary efficacy parameters: visual acuity (Snellen chart and ETDRS chart), foveal sensitivity as measured by perimetry, and fundus alterations as evaluated according to the criteria of the International Classification and Grading System for AMD. The mean change in all four parameters of visual functions showed significant improvement in the treated group by the end of the study period. In addition, in the treated group only 1 out of 48 cases (2%) while in the placebo group 9 out of 53 (17%) showed clinically significant (>2.0 dB) worsening in VFMD (p = 0.006, odds ratio: 10.93). Decrease in drusen-covered area of treated eyes was also statistically significant as compared to placebo when either the most affected eyes (p = 0.045) or the less affected eyes (p = 0.017) were considered. These findings strongly suggested that an appropriate combination of compounds which affect mitochondrial lipid metabolism, may improve and subsequently stabilize visual functions, and it may also improve fundus alterations in patients affected by early AMD.
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Affiliation(s)
- J Feher
- Ophthalmic Neuroscience Program, Department of Ophthalmology, University of Rome 'La Sapienza', Rome, Italy.
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Abstract
The present study used an operant conditioning procedure and contour integration stimuli to test three-month-olds' sensitivity to both contour continuity and contour closure. The data demonstrate an immaturity of continuity detection and a lack of closure detection at that age, relative to a previous finding of a heightened sensitivity to closed contours in adult observers. This finding modifies the general view of infant visual perception that has been more focused on the quantitative development of various aspects of visual perception, including contrast sensitivity, binocular disparity processing, perceptual completion, and other perceptual skills. These results suggest qualitative change in terms of the organization of visual information during development, and implications of this finding for visual maturation of mechanisms suggested to underlie these detection abilities are discussed.
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Affiliation(s)
- Peter Gerhardstein
- Department of Psychology, Binghamton University, Binghamton, NY 13902-6000, USA.
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39
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Kovacs I, Kovacs G, Feher A. Lack of "one-shot" learning in preschool children (eye-movement data). J Vis 2004. [DOI: 10.1167/4.8.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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40
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Solymosi F, Kovacs I. Effects of potassium adlayer on the adsorption and desorption of hydrogen on a palladium(100) surface. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100359a001] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Eid T, Kovacs I, Spencer DD, de Lanerolle NC. Novel expression of AMPA-receptor subunit GluR1 on mossy cells and CA3 pyramidal neurons in the human epileptogenic hippocampus. Eur J Neurosci 2002; 15:517-27. [PMID: 11876779 DOI: 10.1046/j.0953-816x.2001.01887.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Previous immunocytochemical investigations performed in our laboratory on the human hippocampus surgically resected for the treatment of mesial temporal lobe epilepsy (MTLE) have demonstrated an increased expression of the AMPA-receptor subunit GluR1 on neurons in the hilus and area CA3. Light microscopically, many of these neurons exhibited peculiar filamentous extensions and grape-like excrescences that protruded from their somata and proximal dendrites, suggesting that these neurons may be mossy cells and CA3 pyramidal neurons, respectively. The present electron microscopic study was carried out to further characterize these cells. The filamentous extensions were identified as dendrites from which spines often protruded, and the grape-like excrescences represented clusters of closely associated dendrites and spines. A variety of synapses were formed by the GluR1-positive profiles. These arrangements ranged from simple contacts between a single unlabelled axon terminal and a single labelled postsynaptic element, to complex contacts involving multiple unlabelled axon terminals and labelled postsynaptic elements. Many of the axon terminals involved in these arrangements were mossy fibre boutons. Thus, a large proportion of the GluR1-positive neurons were identified as hilar mossy cells and CA3 pyramidal neurons, cells hitherto thought to be absent or greatly reduced in the MTLE hippocampus. Taken together, these data suggest the presence of a highly efficient excitatory circuit involving AMPA receptors, mossy cells and CA3 pyramidal neurons in the sclerotic hippocampus. Such a circuit could be critically involved in the genesis and maintenance of temporal lobe epilepsy.
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Affiliation(s)
- Tore Eid
- Department of Neurosurgery, Yale University School of Medicine, 333 Cedar Street, PO Box 208082, New Haven, CT 06520-8082, USA.
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42
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Abstract
Our aim was to obtain an objective evaluation of the airway before and after glottis-dilating operations utilizing lung function tests. The charts of 109 patients who underwent either reversible or irreversible glottis-dilating operations by Lichtenberger were reviewed. 64 nonselected cases of these patients, all with irreversible glottis-dilating operations, were studied. Lung function tests that were performed were body-pletysmography, forced inspiratory volume (FIV1), forced expiratory volume (FEV1), peak inspiratory flow rate (PIF), peak expiratory flow rate (PEF) and resistance of the airways (RAW). The FEV1, FIV1, PEF and PIF all improved following irreversible glottis-dilating operations. The RAW was remarkably decreased post-operatively as compared to pre-operatively. In conclusion, the airways of patients undergoing irreversible glottis-dilation operations improved moderately to well following such surgeries. Lung function tests are an objective means of evaluating the airway before and after surgery.
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Affiliation(s)
- S Leitersdorfer
- Szent Rókus Hospital and Institutions, Department of Otorhinolaryngology, Head and Neck Surgery, Budapest, Hungary.
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Tronchet JM, Kovacs I, Dilda P, Seman M, Andrei G, Snoeck R, De Clercq E, Balzarini J. Synthesis and anti-HIV activity of thymidine analogues bearing a 4'-cyanovinyl group and some derivatives thereof. Nucleosides Nucleotides Nucleic Acids 2001; 20:1927-39. [PMID: 11794798 DOI: 10.1081/ncn-100108323] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Treatment of 3'-O-tert-butyldimethylsilyl-2',5'-dideoxy-5'-oxothymidine (4) with potassium or magnesium nitromethanide afforded in good yield the resolvable epimeric mixture of the expected blocked nitronucleosides 5 which upon dehydration led to the corresponding E-nitroenofuranosylthymidine 6. Nucleophilic attack of cyanide onto the nitrovinyl group led to a nucleoside analogue bearing a terminal 1-cyanovinyl group (7), a soft electrophilic group which, upon reaction with benzeneselenol, underwent a conjugate addition to the phenylselenonucleoside derivative 9. All these compounds, eventually de-O-silylated, were subject of in vitro biological testing, some exhibiting interesting cytotoxic or antiviral properties.
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Affiliation(s)
- J M Tronchet
- Department of Organic Pharmaceutical Chemistry, University of Geneva, Sciences II, Switzerland
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Affiliation(s)
- L A Ingano
- Genetics and Aging Unit and Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA
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Tronchet JM, Kovacs I, Seman M, Dilda P, De Clercq E, Balzarini J. Highly stereoselective synthesis and biological properties of nucleoside analogues bearing a spiro inserted oxirane ring. Nucleosides Nucleotides Nucleic Acids 2000; 19:775-94. [PMID: 10960035 DOI: 10.1080/15257770008035024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Starting from 2',5'-di-O-TBDMS-3'-ketouridine 1 or its thymine analogue 2, both xylo (3-10) and ribo (20) epimers of a series of 3"-substituted 3'-spironucleosides have been obtained in good yields and with a total stereoselectivity. Most new compounds were moderately cytotoxic with in some cases slightly selective antiproliferative activities. None of these compounds was active against HIV, but some other antiviral activities against HSV-2, CMV, EBV, or VZV, in the micromolar range, were noted in specific cases.
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Affiliation(s)
- J M Tronchet
- Department of Organic Pharmaceutical Chemistry, University of Geneva, Sciences II, Switzerland
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49
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Fakla I, Kovacs I, Yamaguchi H, Geula C, Kasa P. Expressions of amyloid precursor protein, synaptophysin and presenilin-1 in the different areas of the developing cerebellum of rat. Neurochem Int 2000; 36:143-51. [PMID: 10676878 DOI: 10.1016/s0197-0186(99)00108-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study reveals the expressions of Alzheimer's disease-related amyloid precursor protein, presenilin-1, and a presynaptic marker protein, synaptophysin, in the archi-, paleo- and neocerebellum during the postnatal development of the rat. The Western blot results demonstrate a gradual increase in the soluble amyloid precursor protein level in the archicerebellum during the first 3 weeks, while in the neo- and paleocerebellum the levels reach a plateau as early as the 1st week. Immunohistochemically, the protein is present in the deep part of the external granule cell layer and the internal granule cell layer in the newborn animal, while in 3-week-old animals the staining appears mainly in the perikarya and dendrites of the Purkinje cells. The level of synaptophysin increases progressively from postnatal day 7 up to 3 weeks in the archi- and paleocerebellum, and up to 6 weeks in the neocerebellum. Immunohistochemically, the amyloid precursor protein staining appears first in the inner part of the molecular layer and in the internal granule cell layer. In a 3-week-old animal, synaptophysin staining is present in all areas of the cerebellar molecular layer and in the internal granule cell layer. The presenilin-1 immunohistochemical reaction appeared equally in the archi-, paleo- and neocerebellum. Much of the staining is present in the glial cells and Purkinje cells. Less immunoreactivity is observed in the Golgi cells and granule cells. It is concluded that the postnatal expressions of soluble and membrane-bound amyloid precursor protein, synaptophysin and presenilin-1 are regulated differently during the ontogenetical development of the archi-, paleo- and neocerebellum of rat. Further, the amyloid precursor protein and presenilin-1 may be present in cells which do not degenerate in Alzheimer's disease.
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Affiliation(s)
- I Fakla
- Alzheimer's Disease Research Centre, Albert Szent-Györgyi Medical University, Szeged, Hungary
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50
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Kasa P, Papp H, Kovacs I, Forgon M, Penke B, Yamaguchi H. Human amyloid-beta1-42 applied in vivo inhibits the fast axonal transport of proteins in the sciatic nerve of rat. Neurosci Lett 2000; 278:117-9. [PMID: 10643815 DOI: 10.1016/s0304-3940(99)00863-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Human amyloid-beta1-42 has been suggested to be a pathogenetic factor in Alzheimer's disease. The precise mechanism by which this peptide causes the degeneration of neurons in the affected brain is not yet fully understood. By using immunohistochemistry we explored the inhibitory effects of human amyloid-beta1-42 applied in vivo on the fast axonal transport of acetylcholinesterase, the amyloid precursor protein, the vesicular acetylcholine transporter and synaptophysin in the sciatic nerve of rat. Our findings provide evidence for the in vivo neurotoxic effect of human amyloid-beta peptide.
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Affiliation(s)
- P Kasa
- Alzheimer's Disease Research Centre, Albert Szent-Györgyi Medical University, Szeged, Hungary.
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