8 results on '"Saponiero, R."'
Search Results
2. Producing regularly and irregularly inflected verb forms: behavioural and neuroimaging data from the three Italian conjugations
- Author
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Renato Saponiero, Annibale Elia, Azzurra Mancuso, Simonetta Vietri, Andrea G. Russo, Fabrizio Esposito, Alessandro Laudanna, F. Di Salle, M. De Martino, De Martino, M., Mancuso, A., Russo, A. G., Elia, A., Di Salle, F., Saponiero, R., Vietri, S., Esposito, F., and Laudanna, A.
- Subjects
Linguistics and Language ,Regularity/irregularity ,Mental lexicon ,Cognitive Neuroscience ,05 social sciences ,Experimental and Cognitive Psychology ,Verb ,inflectional classe ,050105 experimental psychology ,Language and Linguistics ,Linguistics ,03 medical and health sciences ,0302 clinical medicine ,Verbs ,Neuroimaging ,FMRI ,Inflection ,Inflectional classes ,0501 psychology and cognitive sciences ,Psychology ,030217 neurology & neurosurgery - Abstract
The generation of regular and irregular inflected verb-forms has been taken as a crucial test between models of inflection in the mental lexicon, namely approaches which invoke different mechanisms for regular and irregular forms (rule-based procedures vs. recovery of whole forms stored in an associative network) and accounts which postulate a single procedure for all forms. An alternative hypothesis suggests that inflectional processes are explained by membership of words to clusters, for instance, Italian inflectional classes (conjugations). In a behavioural and a rapid event-related fMRI experiment, participants overtly generated the past participle of verbs from the three Italian conjugations. Results showed that the cognitive operations and the neural substrate underlying inflectional processes rely on specific properties of inflectional classes. Different patterns of cortical activations elicited by verbs from different conjugations were detected for the first time in the left middle frontal gyrus, left pre-supplementary motor area and left anterior cingulate cortex.
- Published
- 2019
- Full Text
- View/download PDF
3. Cortical pattern of reduced perfusion in hearing loss revealed by ASL-MRI
- Author
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Sofia Cuoco, Marta John, Sara Ponticorvo, Renato Saponiero, Ettore Cassandro, Renzo Manara, Alfonso Scarpa, Francesco Di Salle, Josef Pfeuffer, Maria Teresa Pellecchia, Donato Troisi, Claudia Cassandro, Arianna Cappiello, Fabrizio Esposito, Ponticorvo, S., Manara, R., Pfeuffer, J., Cappiello, A., Cuoco, S., Pellecchia, M. T., Saponiero, R., Troisi, D., Cassandro, C., John, M., Scarpa, A., Cassandro, E., Di Salle, F., and Esposito, F.
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Male ,medicine.medical_specialty ,arterial spin labeling ,auditory cortex ,brain atrophy ,cerebral perfusion ,hearing loss ,Perfusion scanning ,050105 experimental psychology ,03 medical and health sciences ,0302 clinical medicine ,Gyrus ,Internal medicine ,medicine ,otorhinolaryngologic diseases ,Humans ,0501 psychology and cognitive sciences ,Radiology, Nuclear Medicine and imaging ,Cerebral perfusion pressure ,Gray Matter ,Hearing Loss ,Research Articles ,Aged ,Auditory Cortex ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,Spin Label ,business.industry ,05 social sciences ,Montreal Cognitive Assessment ,Magnetic resonance imaging ,Audiogram ,hearing lo ,Middle Aged ,Magnetic Resonance Imaging ,medicine.anatomical_structure ,Neurology ,Cerebral blood flow ,Cerebrovascular Circulation ,Cardiology ,Female ,Spin Labels ,Neurology (clinical) ,Anatomy ,Atrophy ,business ,Perfusion ,030217 neurology & neurosurgery ,Human - Abstract
Age-related hearing loss (HL) can be related to brain dysfunction or structural damage and may result in cerebral metabolic/perfusion abnormalities. Arterial spin labeling (ASL) magnetic resonance imaging (MRI) allows investigating noninvasively brain perfusion changes. Pseudocontinuous ASL and T1-weighted MRI (at 3 T) and neuropsychological testing (Montreal Cognitive Assessment) were performed in 31 HL (age range = 47–77 years, mean age ± SD = 63.4 ± 8.4 years, pure-tone average [PTA] HL > 50 dB) and 28 normal hearing (NH; age range = 48–78 years, mean age ± SD = 59.7 ± 7.4 years) subjects. Cerebral blood flow (CBF) and gray matter volume (GMV) were analyzed in the cortical volume to assess perfusion and structural group differences. Two HL subjects showing cognitive impairment were excluded from group comparisons. No significant differences in either global or local atrophy were detected between groups but the HL group exhibited significant regional effects of reduced perfusion within the bilateral primary auditory cortex, with maximal CBF difference (−17.2%) in the right lateral Heschl's gyrus. For the whole sample of HL and NH subjects (n = 59 = 31 HL + 28 NH), the regional CBF was correlated positively to the regional GMV (p = 0.020). In HL subjects (n = 31), the regional CBF was correlated negatively to the audiogram steepness (frequency range: 2–4 kHz, right ear: p = 0.022, left ear: p = 0.015). The observed cortical pattern of perfusion reduction suggests that neuronal metabolism can be related to HL before the recognition of brain structural damage. This also illustrates the potential of ASL-MRI to contribute early functional markers of reduced central processing associated with HL.
- Published
- 2018
4. Technical note and first results on JET 7 thromboaspiration device for T-ICA occlusions.
- Author
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Romano DG, Frauenfelder G, Diana F, and Saponiero R
- Subjects
- Humans, Reperfusion methods, Retrospective Studies, Treatment Outcome, Stroke, Thrombectomy methods
- Abstract
Background: To describe technical features and initial results of a novel large-bore reperfusion catheter as first thromboaspiration approach for endovascular stroke treatment in terminal internal carotid artery (T-ICA) occlusions., Methods: All patients treated with A Direct Aspiration first-Pass Technique (ADAPT) using JET 7 "Standard Tip" Penumbra Reperfusion catheter for acute T-ICA occlusion were retrospectively included in the study. Baseline data, puncture to recanalization time, number of attempts, switch to second device/technique rate and successful recanalization rate were assessed. Successful recanalization was defined by a thrombolysis in cerebral infarction (TICI) score ≥ 2b and favorable functional outcome was defined according to modified Rankin scale (score, 0-2). Catheter specifics and thromboaspiration reperfusion technique with JET 7 were reported., Results: A total of 21 patients who underwent ADAPT with JET 7 Reperfusion catheter were enrolled for the final analysis. ADAPT was performed as first approach in all cases (100%). First attempt successful recanalization (eTICI ≥2b) was obtained in 90,5% of cases. Mean puncture to recanalization time was 16 minutes. Final successful recanalization was reached in 96.5%. Functional independence at 90 was achieved in 57,1% cases. Symptomatic intracranial hemorrhage occurred in one patient within 24 h., Conclusion: The large-bore JET 7 reperfusion catheter could be considered as first-line in patients with acute T-ICA occlusion, allowing rapid recanalization and low rate of rescue therapy with stent retriver. Further series and/or trial evaluation are required to confirm our results., (© 2022. The Author(s).)
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- 2022
- Full Text
- View/download PDF
5. Cerebral hyperperfusion syndrome after intracranial stenting: Case report and systematic review.
- Author
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Diana F, Frauenfelder G, Botto A, Saponiero R, and Romano DG
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- Humans, Male, Middle Aged, Angioplasty, Carotid Artery, Internal, Magnetic Resonance Angiography, Stents adverse effects, Carotid Stenosis diagnostic imaging, Carotid Stenosis surgery
- Abstract
Background: Cerebral Hyperperfusion Syndrome (CHS) is an uncommon complication observed after intracranial angioplasty or stenting procedures. Given to the increasing use of new devices for intracranial angioplasty and stenting (INCS), in selected patients with high ischemic stroke risk, an equally increasing knowledge of complications related to these procedures is mandatory. Case description: a 63-year-old man was diagnosed with an hyperperfusion syndrome after percutaneous angioplasty and stenting for severe symptomatic right internal carotid artery (ICA) siphon stenosis. After treatment he complained generalized seizures and respiratory failure. While conventional imaging did not demonstrate any acute brain lesions, Pseudo-Continuous Arterial Spin Labeling (PCASL) Perfusion MRI early documented right hemisphere blood flow increase suggestive for CHS., Conclusions: Monitoring of perfusion changes after INCS could play an important a role in determining patients with high risk of CHS. ASL Perfusion MRI might be used for promptly, early diagnosis of CHS after treatment of severe intracranial artery stenosis.
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- 2021
- Full Text
- View/download PDF
6. Acute ischemic stroke with cervical internal carotid artery steno-occlusive lesion: multicenter analysis of endovascular approaches.
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Cirillo L, Romano DG, Vornetti G, Frauenfelder G, Tamburrano C, Taglialatela F, Isceri S, Saponiero R, Napoletano R, Gentile M, Romoli M, Princiotta C, Simonetti L, and Zini A
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- Carotid Artery, Internal diagnostic imaging, Carotid Artery, Internal surgery, Humans, Retrospective Studies, Stents, Thrombectomy, Treatment Outcome, Brain Ischemia complications, Brain Ischemia therapy, Endovascular Procedures, Ischemic Stroke, Stroke diagnostic imaging, Stroke drug therapy, Stroke etiology
- Abstract
Background: Occlusion of the internal carotid artery (ICA), whether isolated or in the setting of a tandem lesion (TL) have a poor response to treatment with intravenous thrombolysis. Previous studies have demonstrated the superiority of mechanical thrombectomy in the treatment of acute ischemic stroke (AIS) following large vessel occlusion, compared to standard intravenous fibrinolysis. The aim of our study was to describe endovascular treatment (EVT) in AIS due to isolated ICA occlusion or TL., Methods: We assessed the association between 90-day outcome and clinical, demographic, imaging, and procedure data in 51 consecutive patients with acute isolated ICA occlusion or TL who underwent EVT. We evaluated baseline NIHSS and mRS, ASPECTS, type of occlusion, stent placement, use of stent retrievers and/or thromboaspiration, duration of the procedure, mTICI, postprocedural therapy and complications., Results: A favorable 90-day outcome (mRS 0-2) was achieved in 34 patients (67 %) and was significantly associated with the use of dual antiplatelet therapy after the procedure (p = 0.008), shorter procedure duration (p = 0.031), TICI 2b-3 (p < 0.001) and lack of post-procedural hemorrhagic transformation (p = 0.001). Four patients did not survive, resulting in a mortality rate of 8 %., Conclusions: Our study has shown that EVT in the treatment of AIS due to ICA occlusion is safe, and effective in determining a good functional outcome. ICA stenting led to good angiographic results and therapy with a glycoprotein IIb / IIIa inhibitor immediately after stent release did not result in a greater risk of hemorrhage. The use of post-procedural dual antiplatelet therapy was associated with favorable outcome, without a significant increase in hemorrhagic transformation., (© 2021. The Author(s).)
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- 2021
- Full Text
- View/download PDF
7. Cortical pattern of reduced perfusion in hearing loss revealed by ASL-MRI.
- Author
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Ponticorvo S, Manara R, Pfeuffer J, Cappiello A, Cuoco S, Pellecchia MT, Saponiero R, Troisi D, Cassandro C, John M, Scarpa A, Cassandro E, Di Salle F, and Esposito F
- Subjects
- Aged, Atrophy pathology, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Spin Labels, Auditory Cortex diagnostic imaging, Auditory Cortex pathology, Auditory Cortex physiopathology, Cerebrovascular Circulation physiology, Gray Matter diagnostic imaging, Gray Matter pathology, Gray Matter physiopathology, Hearing Loss diagnostic imaging, Hearing Loss pathology, Hearing Loss physiopathology
- Abstract
Age-related hearing loss (HL) can be related to brain dysfunction or structural damage and may result in cerebral metabolic/perfusion abnormalities. Arterial spin labeling (ASL) magnetic resonance imaging (MRI) allows investigating noninvasively brain perfusion changes. Pseudocontinuous ASL and T1-weighted MRI (at 3 T) and neuropsychological testing (Montreal Cognitive Assessment) were performed in 31 HL (age range = 47-77 years, mean age ± SD = 63.4 ± 8.4 years, pure-tone average [PTA] HL > 50 dB) and 28 normal hearing (NH; age range = 48-78 years, mean age ± SD = 59.7 ± 7.4 years) subjects. Cerebral blood flow (CBF) and gray matter volume (GMV) were analyzed in the cortical volume to assess perfusion and structural group differences. Two HL subjects showing cognitive impairment were excluded from group comparisons. No significant differences in either global or local atrophy were detected between groups but the HL group exhibited significant regional effects of reduced perfusion within the bilateral primary auditory cortex, with maximal CBF difference (-17.2%) in the right lateral Heschl's gyrus. For the whole sample of HL and NH subjects (n = 59 = 31 HL + 28 NH), the regional CBF was correlated positively to the regional GMV (p = 0.020). In HL subjects (n = 31), the regional CBF was correlated negatively to the audiogram steepness (frequency range: 2-4 kHz, right ear: p = 0.022, left ear: p = 0.015). The observed cortical pattern of perfusion reduction suggests that neuronal metabolism can be related to HL before the recognition of brain structural damage. This also illustrates the potential of ASL-MRI to contribute early functional markers of reduced central processing associated with HL., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2019
- Full Text
- View/download PDF
8. Aneurysmal subarachnoid haemorrhage in pregnancy: a case series.
- Author
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Guida M, Altieri R, Palatucci V, Visconti F, Pascale R, Marra M, Locatelli G, Saponiero R, Tufano R, Bifulco F, and Piazza O
- Abstract
Pregnancy is a recognized risk factor for aneurysmal subarachnoid hemorrhage (SAH). Headache is very frequent in normal pregnancy and it is a common sign shared between several intracranial diseases. We present a case series of 10 women in the third trimester of pregnancy admitted to our intensive care unit (ICU) with neurological signs and symptoms. 4 of these patients were diagnosed with SAH. Data in this study suggest that a timely diagnosis and an appropriate treatment is crucial for mother and baby.
- Published
- 2012
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