12 results on '"Albonico G"'
Search Results
2. Massive amplitudes from twistors on the worldsheet
- Author
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Albonico, G and Mason, LJ
- Abstract
The subject of this thesis are ambitwistor string models that describe massive particles by gauging currents to implement a symmetry reduction. Because the amplitude formulae one obtains as correlators in these models are really reductions of the ones presented in [1, 2], the body of the thesis will open with a discussion of properties and features of the six-dimensional superamplitudes that the massive formulae will inherit. Two different instances of symmetry reduction in the ambitwistor string will be considered. The first is a massive version of the RNS ambitwistor string. This provides a derivation of massive amplitude formulae that have support on massive scattering equations such as the ones predicted by Dolan and Goddard [3] and Naculich [4], together with a solid understanding of mass assignment both to external and propagating particles. The second consists of four dimensional twistorial models that will be shown to have an alternative interpretation as theories of maps into the phase space of complexified massive particles. This representation is more suitable to describe supersymmetric theories, such as the Coulomb branch of N = 4 sYM. An interesting class of theories is presented, which is obtained by symmetry reduction along the R-symmetry generators. For supergravity, this produces CSS gauged supergravities in four dimensions. In these theories a novel instance of ‘massive’ double copy structure arises.
- Published
- 2023
3. MIB-1 proliferative activity in invasive breast cancer measured by image analysis
- Author
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Querzoli, P., Albonico, G., Ferretti, S., Rinaldi, R., Magri, E., Indelli, M., and Nenci, I.
- Published
- 1996
4. Modulation of biomarkers in minimal breast carcinoma
- Author
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Querzoli, Patrizia, Albonico, G., Ferretti, Stefano, Rinaldi, R., Beccati, D., Corcione, S., Indelli, M., and Nenci, Italo
- Subjects
Relapse- free interval ,Neu ,P53 ,Proliferation index ,Estrogen receptor ,Overall survival ,Minimal breast carcinoma ,Age groups ,Menopausal status ,Progesterone receptor ,NO - Published
- 1998
5. 2-Microglobulin is potentially neurotoxic, but the blood brain barrier is likely to protect the brain from its toxicity
- Author
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Giorgetti, S., primary, Raimondi, S., additional, Cassinelli, S., additional, Bucciantini, M., additional, Stefani, M., additional, Gregorini, G., additional, Albonico, G., additional, Moratti, R., additional, Montagna, G., additional, Stoppini, M., additional, and Bellotti, V., additional
- Published
- 2008
- Full Text
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6. Stage Ia squamous cell carcinoma as the malignant transformation of giant and unusual mature teratoma of the ovary in an elderly patient.
- Author
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Palomba S, Russo T, Albonico G, and Tripodi M
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- Aged, Cell Transformation, Neoplastic, Female, Humans, Carcinoma, Squamous Cell diagnosis, Carcinoma, Squamous Cell drug therapy, Carcinoma, Squamous Cell surgery, Ovarian Neoplasms diagnosis, Ovarian Neoplasms pathology, Ovarian Neoplasms surgery, Teratoma diagnosis, Teratoma pathology, Teratoma surgery
- Abstract
Background: Mature cystic teratomas of the ovary (MCTO) are a type of germ cell tumor that may contain well-differentiated tissues developed from three germ cell layers and constitute about 20% of ovarian germ cell tumors. They are rare ovarian tumors with an annual incidence variable from 1.2 to 14.2 cases per 100,000 that occur mainly in women of reproductive age. They are frequently benign with a slow growth rate, even if they can undergo a malignant transformation in about 1-2% of cases., Case Presentation: Here, we present the case of an elderly woman referred to gynecological first aid for acute abdominal pain and showing a giant and unusual MCTO at rapid growth with malignant transformation in squamous cell carcinoma (FIGO stage Ia). The patient underwent pelvic mass removal trough emergency longitudinal midline laparotomic incision with intraoperative frozen pathologic examination. A complete surgical staging during the first surgery was performed. After about 9 years of follow-up, she died of non-oncological reasons without recurrence., Conclusions: Present case highlights that CMTO with malignant transformation should always be suspected in elderly women in presence of pelvic mass at rapid growth, even if in absence of other clinical and ultrasonographic signs of malignancy. An intraoperative frozen pathologic examination may drive the best treatment., (© 2022. The Author(s).)
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- 2022
- Full Text
- View/download PDF
7. Pleural Melanoma Metastasis.
- Author
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D'Ambrosio AE, Albonico G, Enide I, Mordà O, Maisano M, and Mondello B
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- Aged, 80 and over, Biopsy, Humans, Male, Melanoma diagnosis, Pleural Neoplasms diagnosis, Skin Neoplasms secondary, Tomography, X-Ray Computed, Melanoma, Cutaneous Malignant, Melanoma secondary, Pleura diagnostic imaging, Pleural Neoplasms surgery, Skin Neoplasms diagnosis, Thoracoscopy methods
- Abstract
Melanomas represent 3% of all skin cancers but 65% of skin cancer deaths. Metastatic melanoma constitutes about 5% of all secondary malignancies of the lung, yet only 2% of patients with thoracic metastases have pleural effusions. We report the case of an 80-year-old patient with right-sided pleural effusion and a history of cutaneous melanoma over the left leg. Thoracoscopy revealed numerous clusters of pink and black masses arising from the visceral and parietal pleura along with the diaphragmatic surface. Biopsies confirmed the diagnosis of metastatic cutaneous melanoma., (Copyright © 2021 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
- Full Text
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8. Value of Multimodal Imaging Approach to Diagnosis of Neurosarcoidosis.
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Sammarra I, Barbagallo G, Labate A, Mondello B, Albonico G, Maisano M, Cascini GL, Quattrone A, and Gambardella A
- Abstract
Background: Neurosarcoidosis is a highly variable condition with many clinical and radiological manifestations, that can lead to difficult identification of isolated central nervous system (CNS) forms, because it could mimic inflammatory, infective or neoplastic disorders. Conventional magnetic resonance imaging (MRI) is gold standard to evaluate CNS involvement in neurosarcoidosis, despite the reported high sensitivity but low specificity in the diagnosis., Case Presentation: Here, we describe a 52-year-old man that presented to our hospital with a 10-year history of focal seizures, progressive cognitive decline and motor impairment. Neurological examination revealed ataxic gait, bilateral telekinetic and postural tremor, brisk reflexes, left extensor plantar response and hypoesthesia to the right side of body. Brain 3T-magnetic resonance imaging (MRI) showed a leukoencephalopathy with multifocal nodular lesions hyperintense on T2/ fluid attenuated inversion recovery (FLAIR) weighted images involving basal ganglia, periventricular and deep white matter. The interpretation of this pattern on conventional MRI was unclear, opening a challenge on the differential diagnosis between inflammatory, infective or neoplastic disorders. Thus, to better understand the nature of these nodules, single-voxel
1 H-magnetic resonance spectroscopy (1 H-MRS), contrast enhanced computed tomography (CT) scan and fluorine-18-fluorodeoxyglucose-positron emission tomography (18 F-FDG-PET)/3T-MRI were performed. The parenchymal multifocal lesions exhibited slight N -acetyl-aspartate/creatine reduction without abnormal peaks on1 H-MRS, enhancement after the administration of contrast agent on CT and hypermetabolism on18 F-FDG-PET/3T-MRI. All these findings excluded primary neoplasms, metastasis, neurotuberculosis, neurocysticercosis and brain abscess, strongly suggesting a diagnosis of neurosarcoidosis. Therefore, a whole-body18 F-FDG-PET/CT was performed in order to identify subclinical extraneural sarcoidosis localizations, and a hypermetabolic nodule of the left lung upper lobe was found. Subsequently, a biopsy documented the presence of systemic sarcoidosis, supporting a diagnosis of probable neurosarcoidosis., Conclusions: This case demonstrated that a multimodal neuroimaging approach can provide different but complementary evidences to suspect sarcoidosis, especially in apparently CNS isolated forms.- Published
- 2019
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9. The impact of unrecognized autoimmune rheumatic diseases on the incidence of preeclampsia and fetal growth restriction: a longitudinal cohort study.
- Author
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Spinillo A, Beneventi F, Locatelli E, Ramoni V, Caporali R, Alpini C, Albonico G, Cavagnoli C, and Montecucco C
- Subjects
- Adult, Autoantibodies blood, Autoimmune Diseases diagnosis, Female, Fetal Growth Retardation blood, Fetal Growth Retardation epidemiology, Humans, Incidence, Longitudinal Studies, Pre-Eclampsia blood, Pre-Eclampsia epidemiology, Pregnancy, Pregnancy Outcome, Rheumatic Diseases diagnosis, Autoimmune Diseases complications, Delayed Diagnosis adverse effects, Fetal Growth Retardation etiology, Pre-Eclampsia etiology, Rheumatic Diseases complications
- Abstract
Background: The burden of pregnancy complications associated with well defined, already established systemic rheumatic diseases preexisting pregnancy such as rheumatoid arthritis, systemic lupus erythematosus or scleroderma is well known. Systemic rheumatic diseases are characterized by a long natural history with few symptoms, an undifferentiated picture or a remitting course making difficult a timely diagnosis. It has been suggested that screening measures for these diseases could be useful but the impact of unrecognized systemic rheumatic disorders on pregnancy outcome is unknown. The objective of the study was to evaluate the impact of previously unrecognized systemic autoimmune rheumatic on the incidence of preeclampsia and fetal growth restriction (FGR)., Methods: A longitudinal cohort-study with enrolment during the first trimester of pregnancy of women attending routine antenatal care using a two-step approach with a self-reported questionnaire, autoantibody detection and clinical evaluation of antibody-positive subjects. The incidence of FGR and preeclampsia in subjects with newly diagnosed rheumatic diseases was compared to that of selected negative controls adjusting for potential confounders by logistic regression analysis., Results: The prevalence of previously unrecognized systemic rheumatic diseases was 0.4 % for rheumatoid arthritis (19/5232), 0.25 % (13/5232) for systemic lupus erythematosus, 0.31 % (16/5232) for Sjögren's syndrome, 0.3 % for primary antiphospholipid syndrome (14/5232) and 0.11 % (6/5232) for other miscellaneous diseases. Undifferentiated connective tissue disease was diagnosed in an additional 131 subjects (2.5 %). The incidence of either FGR or preeclampsia was 6.1 % (36/594) among controls and 25.3 % (50/198) in subjects with unrecognized rheumatic diseases (excess incidence = 3.9 % (95 % CI = 2.6-9.6) or 34 % (95 % CI = 22-44) of all cases of FGR/preeclampsia). The incidence of small for gestational age infant (SGA) was higher among subjects with unrecognized rheumatic diseases (41/198 as compared to 46/594; adjOdds Ratio = 3.1, 95 % CI =1.96-4.95) than in controls. The excess incidence associated with unrecognized rheumatic diseases was 2.7 % (95 % CI = 1.5-4) or 25 % (95 % CI = 12.8-34.8) of all SGA cases., Conclusions: Unrecognized autoimmune systemic rheumatic disorders are associated with a significant proportion of preeclampsia and fetal growth failure, suggesting that their role in the etiology of adverse pregnancy outcome is probably undervalued.
- Published
- 2016
- Full Text
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10. Early, Incomplete, or Preclinical Autoimmune Systemic Rheumatic Diseases and Pregnancy Outcome.
- Author
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Spinillo A, Beneventi F, Locatelli E, Ramoni V, Caporali R, Alpini C, Albonico G, Cavagnoli C, and Montecucco C
- Subjects
- Adult, Antiphospholipid Syndrome epidemiology, Antiphospholipid Syndrome immunology, Arthritis, Rheumatoid epidemiology, Arthritis, Rheumatoid immunology, Autoantibodies immunology, Autoimmune Diseases immunology, Cohort Studies, Connective Tissue Diseases epidemiology, Connective Tissue Diseases immunology, Female, Humans, Infant, Newborn, Infant, Small for Gestational Age, Italy epidemiology, Logistic Models, Longitudinal Studies, Lupus Erythematosus, Systemic epidemiology, Lupus Erythematosus, Systemic immunology, Odds Ratio, Pregnancy, Pregnancy Complications immunology, Pulsatile Flow, Rheumatic Diseases immunology, Sjogren's Syndrome epidemiology, Sjogren's Syndrome immunology, Ultrasonography, Doppler, Ultrasonography, Prenatal, Uterine Artery diagnostic imaging, Autoimmune Diseases epidemiology, Fetal Growth Retardation epidemiology, Pre-Eclampsia epidemiology, Pregnancy Complications epidemiology, Pregnancy Outcome epidemiology, Rheumatic Diseases epidemiology
- Abstract
Objective: To evaluate the impact of preclinical systemic autoimmune rheumatic disorders on pregnancy outcome., Methods: In this longitudinal cohort study, patients were enrolled during the first trimester of pregnancy if they reported having had connective tissue disorder symptoms, were found to be positive for circulating autoantibodies, and on clinical evaluation were judged to have a preclinical or incomplete rheumatic disorder. The incidence of fetal growth restriction (FGR), preeclampsia, and adverse pregnancy outcomes in patients with preclinical rheumatic disorders was compared with that in selected controls, after adjustment for confounders by penalized logistic regression. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated., Results: Of 5,232 women screened, 150 (2.9%) were initially diagnosed as having a suspected rheumatic disorder. After a mean ± SD postpartum follow-up of 16.7 ± 5.5 months, 64 of these women (42.7%) had no clinically apparent rheumatic disease and 86 (57.3%) had persistent symptoms and positive autoantibody results, including 10 (6.7%) who developed a definitive rheumatic disease. The incidences of preeclampsia/FGR and of small for gestational age (SGA) infants were 5.1% (23 of 450) and 9.3% (42 of 450), respectively, among controls, 12.5% (8 of 640) (OR 2.7 [95% CI 1.1-6.4]) and 18.8% (12 of 64) (OR 2.2 [95% CI 1.1-4.5]), respectively, among women with no clinically apparent disease, and 16.3% (14 of 86) (OR 3.8 [95% CI 1.9-7.7]) and 18.6% (16 of 86) (OR 2.3 [95% CI 1.2-4.3]), respectively, among those with persisting symptoms at follow-up. Mean ± SD umbilical artery Doppler pulsatility indices were higher among women with no clinically apparent disease (0.95 ± 0.2) and those with persisting symptoms (0.96 ± 0.21) than in controls (0.89 ± 0.12) (P = 0.01 and P < 0.001, respectively)., Conclusion: In our study population, preclinical rheumatic disorders were associated with an increased risk of FGR/preeclampsia and SGA. The impact of these findings and their utility in screening for FGR/preeclampsia need to be confirmed in population studies., (© 2016, American College of Rheumatology.)
- Published
- 2016
- Full Text
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11. beta2-Microglobulin is potentially neurotoxic, but the blood brain barrier is likely to protect the brain from its toxicity.
- Author
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Giorgetti S, Raimondi S, Cassinelli S, Bucciantini M, Stefani M, Gregorini G, Albonico G, Moratti R, Montagna G, Stoppini M, and Bellotti V
- Subjects
- Blood-Brain Barrier physiology, Brain, Cell Line, Tumor, Cognition Disorders etiology, Cognition Disorders physiopathology, Humans, Neuroblastoma, Renal Dialysis adverse effects, beta 2-Microglobulin physiology, beta 2-Microglobulin adverse effects
- Abstract
Background: In dialysis-related amyloidosis, beta2-microglobulin accumulates as amyloid fibrils preferentially around bones and tendons provoking osteoarthritis. In addition to the pathologic role played by the amyloid fibrils, it can be speculated that a pathogenic role is also played by the high concentrations of soluble beta2-microglobulin because it is toxic for certain cell lines like HL60 and mitogen for other cells such as the osteoclasts. The discovery that beta2-microglobulin can influence the biology of certain cells may lead to the assumption that it might affect neuronal cells that are quite sensitive to amyloidogenic proteins in the oligomeric state. Such a concern might be supported by clinical evidence that haemodialysis is associated with the risk of a cognitive impairment., Methods: The cytotoxicity of beta2-microglobulin on the SH-SY5Y neuroblastoma cells was assayed by the MTT test. The beta2-microglobulin concentration was determined in the cerebrospinal fluid of four different patients by means of immunonephelometry and western blot., Results: Oligomeric beta2-microglobulin is cytotoxic for the SH-SY5Y cells at a concentration that can be easily reached in the plasma of patients on haemodialysis. However, the beta2-microglobulin concentration, measured in the cerebrospinal fluid of a haemodialysis patient, appears to be independent of its plasma concentration and is maintained under the lower limit of cytotoxicity we have determined in the cell culture., Conclusions: Although beta2-microglobulin is potentially neurotoxic, it is unlikely that this protein plays a role in the pathophysiology of cognitive impairment observed in haemodialysis patients due to the protective effect of the blood brain barrier that maintains a low concentration of beta2-microglobulin in the cerebrospinal fluid.
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- 2009
- Full Text
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12. Ganglioneuroma of parapharyngeal region.
- Author
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Albonico G, Pellegrino G, Maisano M, and Kardon DE
- Subjects
- Adult, Biopsy, Needle, Female, Ganglioneuroma surgery, Humans, Immunohistochemistry, Keratins analysis, Neurofilament Proteins analysis, Pharyngeal Neoplasms surgery, Phosphopyruvate Hydratase analysis, S100 Proteins analysis, Schwann Cells pathology, Vimentin analysis, Ganglioneuroma pathology, Pharyngeal Neoplasms pathology
- Abstract
In this article, we describe a case of ganglioneuroma observed in a 27-year-old woman. The tumor was found in an unusual location, the parapharyngeal space. The lesion was asymptomatic and was surgically excised after a fine-needle aspiration biopsy that was considered inadequate. The lesion measured 4 x 3 cm and was capsulated. Two distinct cells groups were identified: ganglion cells and Schwann cells placed in a loose myxoid stroma. Immunohistochemical stains (performed with the following monoclonal antibodies: high-molecular-weight cytokeratins, vimentin, neuron-specific enolase, neurofilaments, and S100) confirmed the diagnosis of ganglioneuroma. The pathologic findings and a review of recent literature are discussed.
- Published
- 2001
- Full Text
- View/download PDF
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