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Di Spigna G, Spalletti Cernia D, Covelli B, Vargas M, Rubino V, Iacovazzo C, Napolitano F, Postiglione L. Interleukin-6 and Its Soluble Receptor Complex in Intensive Care Unit COVID-19 Patients: An Analysis of Second Wave Patients. Pathogens 2023; 12:1264. [PMID: 37887780 PMCID: PMC10610043 DOI: 10.3390/pathogens12101264] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/05/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
In December 2019, a SARS-CoV-2 virus, coined Coronavirus Disease 2019 (COVID-19), discovered in Wuhan, China, affected the global population, causing more than a million and a half deaths. Since then, many studies have shown that the hyperinflammatory response of the most severely affected patients was primarily related to a higher concentration of the pro-inflammatory cytokine interleukin-6, which directly correlated with disease severity and high mortality. Our study analyzes IL-6 and its soluble receptor complex (sIL-6R and sgp130) in critically ill COVID-19 patients who suffered severe respiratory failure from the perspective of the second COVID wave of 2020. A chemiluminescent immunoassay was performed for the determination of IL6 in serum together with an enzyme-linked immunosorbent assay to detect serum levels of sIL-6R and sgp130, which confirmed that the second wave's serum levels of IL-6 were significantly elevated in the more severe patients, as with the first 2019 COVID-19 wave, resulting in adverse clinical outcomes. At present, considering that no specific treatment for severe COVID-19 cases in its later stages exists, these molecules could be considered promising markers for disease progression, illness severity, and risk of mortality.
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Affiliation(s)
- Gaetano Di Spigna
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
| | - Daniela Spalletti Cernia
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
| | - Bianca Covelli
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
| | - Maria Vargas
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (M.V.); (C.I.)
| | - Valentina Rubino
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
| | - Carmine Iacovazzo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (M.V.); (C.I.)
| | - Filomena Napolitano
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
| | - Loredana Postiglione
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (G.D.S.); (D.S.C.); (V.R.); (F.N.); (L.P.)
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples “Federico II”, 80131 Naples, Italy; (M.V.); (C.I.)
- Center for Basic and Clinical Immunology Research (CISI), University of Naples “Federico II”, 80131 Naples, Italy
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Caprio RDI, Sacchelli L, Spigna GDI, Ricciardone M, Bardazzi F, Ladogana P, Scala E, Fabbrocini G, Covelli B, Balato A, Postiglione L. The potential role of serum polyclonal free light chains as markers of immune activation in psoriatic patients. Eur J Dermatol 2023; 33:12-18. [PMID: 37154810 DOI: 10.1684/ejd.2023.4403] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
BACKGROUND Polyclonal free light chains (FLCs) of immunoglobulins include κ and λ chains and represent a sensitive marker of activation and/or dysfunction of the immune system. OBJECTIVES The aim of this study was to investigate the role of FLCs as markers of immune activation in the management of psoriatic patients treated with biologics. MATERIALS & METHODS The overall study population included 45 patients affected by mild-to-severe psoriasis with either ongoing biological treatment or without any current systemic therapy. Peripheral blood samples were taken from all patients and 10 healthy subjects in order to determine immunoglobulins, light chains and FLCs by quantitative nephelometric assay. Moreover, antinuclear antibodies (ANA) were detected by immunofluorescence. RESULTS Psoriatic patients showed significant increased levels of κ and λ FLCs compared to healthy controls. Interestingly, κ and λ FLCs values were significantly increased only in psoriatic patients with ongoing biological treatment and, in particular, in responder subjects. Furthermore, both κ and λ FLCs significantly correlated with duration of therapy. For patients with FLC levels above normal range and under biological treatment for more than 12 months, the odds of being ANA+ was greater relative to patients with FLC levels above normal range but under biological treatment for less than 12 months. CONCLUSIONS Increased FLC levels may represent a marker of immune reactivation in psoriatic patients treated with biologic agents. We suggest that determining FLC levels has clinical relevance, with a cost/benefit ratio justifying such evaluation in the clinical management of psoriasis.
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Affiliation(s)
- Roberta DI Caprio
- Microbiology and Virology unit, Cotugno Hospital, AORN dei Colli, Naples, Italy
| | - Lidia Sacchelli
- Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Gaetano DI Spigna
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Margherita Ricciardone
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Federico Bardazzi
- Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Paolo Ladogana
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Emanuele Scala
- Division of Dermatology and Venereology, Department of Medicine Solna, and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Gabriella Fabbrocini
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Bianca Covelli
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Anna Balato
- Dermatology Unit, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Loredana Postiglione
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
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3
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Capasso N, Palladino R, Cerbone V, Spiezia AL, Covelli B, Fiore A, Lanzillo R, Carotenuto A, Petracca M, Stanziola L, Scalia G, Brescia Morra V, Moccia M. Ocrelizumab effect on humoral and cellular immunity in multiple sclerosis and its clinical correlates: a 3-year observational study. J Neurol 2023; 270:272-282. [PMID: 36048265 PMCID: PMC9813008 DOI: 10.1007/s00415-022-11350-1] [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] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 08/18/2022] [Accepted: 08/21/2022] [Indexed: 01/13/2023]
Abstract
OBJECTIVE We aim to evaluate 3-year effects of ocrelizumab (humanized anti-CD20 monoclonal antibody for the treatment of multiple sclerosis (MS)) on lymphocytes, neutrophils and immunoglobulins: (1) when compared with pre-infusion assessment; (2) over the course of treatment; and (3) possible clinical correlates of the observed immunological modifications. METHODS This real-world observational cohort study has been conducted on prospectively collected data from 78 MS patients (mean age 47.8 ± 10.5 years; females 48.7%) commencing on ocrelizumab from 2018, with mean follow-up of 36.5 ± 6.8 months. Clinical data and blood samples were collected every three months. Total lymphocyte count and subpopulations were assessed on peripheral blood using flow cytometry. Serum immunoglobulins were evaluated with nephelometry. RESULTS When compared with pre-infusion values, we observed reduction of total, CD19 and CD20 lymphocyte counts; however, after the first infusion, their levels remained substantially stable. Over time we observed a progressive reduction of CD8 lymphocytes, while no changes were observed for CD4, CD27, CD3CD27, and CD19CD27. After the first infusion, we observed reduction in IgG, which further decreased during the follow-up. Higher probability of EDSS progression was associated with reduced modulation of CD8 lymphocytes. INTERPRETATION Ocrelizumab affects both humoral and cellular immune responses. Disability progression over the follow-up was associated with lower CD8 cytotoxic T-lymphocyte reduction. Changes in humoral response are immediate and sustained, while modulation of cellular immunity occurs progressively through regular re-treatment, and is related to clinical stability.
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Affiliation(s)
- Nicola Capasso
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
| | - Raffaele Palladino
- Department of Public Health, Federico II University of Naples, Naples, Italy
| | | | - Antonio Luca Spiezia
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Bianca Covelli
- Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
| | - Antonia Fiore
- Centre for Advanced Biotechnology (CEINGE), Naples, Italy
| | - Roberta Lanzillo
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Antonio Carotenuto
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Maria Petracca
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
- Department of Human Neuroscience, Sapienza University of Rome, Rome, Italy
| | - Lucia Stanziola
- Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
| | - Giulia Scalia
- Centre for Advanced Biotechnology (CEINGE), Naples, Italy
| | - Vincenzo Brescia Morra
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy
| | - Marcello Moccia
- Multiple Sclerosis Unit, Federico II University Hospital, Via Sergio Pansini 5, 80131, Naples, Italy.
- Department of Molecular Medicine and Medical Biotechnology, Federico II University of Naples, Via Sergio Pansini 5, 80131, Naples, Italy.
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D'Esposito V, Di Tolla MF, Lecce M, Cavalli F, Libutti M, Misso S, Cabaro S, Ambrosio MR, Parascandolo A, Covelli B, Perruolo G, Sansone M, Formisano P. Lifestyle and Dietary Habits Affect Plasma Levels of Specific Cytokines in Healthy Subjects. Front Nutr 2022; 9:913176. [PMID: 35811952 PMCID: PMC9270017 DOI: 10.3389/fnut.2022.913176] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/24/2022] [Indexed: 11/13/2022] Open
Abstract
Low-grade chronic inflammation (LGCI) is a common feature of non-communicable diseases. Cytokines play a crucial role in LGCI. This study aimed to assess how LGCI risk factors [e.g., age, body mass index (BMI), smoke, physical activity, and diet] may impact on specific cytokine levels in a healthy population. In total, 150 healthy volunteers were recruited and subjected to questionnaires about the last 7-day lifestyle, including smoking habit, physical activity, and food frequency. A panel of circulating cytokines, chemokines, and growth factors was analyzed by multiplex ELISA. BMI showed the heaviest impact on the correlation between LGCI-related risk factors and cytokines and was significantly associated with CRP levels. Aging was characterized by an increase in IL-1b, eotaxin, MCP-1, and MIP-1α. Smoking was related to higher levels of IL-1b and CCL5/RANTES, while physical activity was related to MIP-1α. Within the different eating habits, CRP levels were modulated by eggs, red meat, shelled fruits, and greens consumption; however, these associations were not confirmed in a multivariate model after adjusting for BMI. Nevertheless, red meat consumption was associated with an inflammatory pattern, characterized by an increase in IL-6 and IL-8. IL-8 levels were also increased with the frequent intake of sweets, while a higher intake of shelled fruits correlated with lower levels of IL-6. Moreover, IL-6 and IL-8 formed a cluster that also included IL-1b and TNF-α. In conclusion, age, BMI, smoke, physical activity, and dietary habits are associated with specific cytokines that may represent potential markers for LGCI.
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Affiliation(s)
- Vittoria D'Esposito
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Naples, Italy
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | | | - Manuela Lecce
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | | | - Michele Libutti
- Oncology Department, Azienda Sanitaria Locale Napoli 3 Sud, Naples, Italy
| | - Saverio Misso
- Unit of Transfusion Medicine, Azienda Sanitaria Locale Caserta, Caserta, Italy
| | - Serena Cabaro
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Naples, Italy
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Maria Rosaria Ambrosio
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Naples, Italy
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Alessia Parascandolo
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Bianca Covelli
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Giuseppe Perruolo
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
| | - Mario Sansone
- Department of Electrical Engineering and Information Technology, Polytechnic and Basic Sciences School, University of Naples Federico II, Naples, Italy
| | - Pietro Formisano
- URT “Genomic of Diabetes”, Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Naples, Italy
- Department of Translational Medical Sciences, University of Naples “Federico II”, Naples, Italy
- *Correspondence: Pietro Formisano
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5
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Spiezia AL, Cerbone V, Molinari EA, Capasso N, Lanzillo R, Carotenuto A, Petracca M, Novarella F, Covelli B, Scalia G, Brescia Morra V, Moccia M. Changes in lymphocytes, neutrophils and immunoglobulins in year-1 cladribine treatment in multiple sclerosis. Mult Scler Relat Disord 2021; 57:103431. [PMID: 34871857 DOI: 10.1016/j.msard.2021.103431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/15/2021] [Accepted: 11/27/2021] [Indexed: 12/21/2022]
Affiliation(s)
- Antonio Luca Spiezia
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | | | | | - Nicola Capasso
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Roberta Lanzillo
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Antonio Carotenuto
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Maria Petracca
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Federica Novarella
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Bianca Covelli
- Department of Translational Medical Sciences, Federico II University of Naples, Naples, Italy
| | - Giulia Scalia
- Centre for Advanced Biotechnology (CEINGE), Naples, Italy
| | - Vincenzo Brescia Morra
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Marcello Moccia
- Multiple Sclerosis Clinical Care and Research Centre, Department of Neuroscience, Reproductive Sciences and Odontostomatology, Federico II University of Naples, Naples, Italy.
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6
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Di Caprio R, Sacchelli L, Di Spigna G, Ricciardone M, Bardazzi F, Ladogana P, Scala E, Covelli B, Balato A, Postiglione L. 240 Serum polyclonal free light chains: possible markers of immune activation in psoriasis. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.245] [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: 11/26/2022]
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7
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Di Spigna G, Rossi FW, Mormile I, Ladogana P, Buonavolontà L, Covelli B, Salzano S, Napolitano F, Giannini A, Postiglione L. Serum Metalloprotease 3 (MMP-3) biomarker of therapeutic efficacy during treatment of rheumatoid arthritis. J BIOL REG HOMEOS AG 2021; 35:1041-1045. [PMID: 34121372 DOI: 10.23812/21-86-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- G Di Spigna
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - F W Rossi
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - I Mormile
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - P Ladogana
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - L Buonavolontà
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - B Covelli
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - S Salzano
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (National Research Council), Naples, Italy
| | - F Napolitano
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - A Giannini
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - L Postiglione
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
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Di Spigna G, Ladogana P, Covelli B, Ricciardone M, Salzano S, Spalletti Cernia D, Mormile I, Varriale G, Catapano O, Spadaro G, Mormile M, Postiglione L. Component resolved diagnosis by recombinant allergens in patients with allergies to inhalants. J BIOL REG HOMEOS AG 2021; 34:1729-1737. [PMID: 33143407 DOI: 10.23812/20-297-a] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Molecular characterization of IgE reactivity of specific individual components of allergenic extracts is now possible due to the technology of recombinant allergens derived from studies of molecular biology of allergic pathology. The identification of the immunoreactivity to single allergenic components in allergic subjects allows to specifically define her/his allergic profile and obtain the so-termed Component Resolved Diagnosis (CRD). Molecular allergens can be classified into those that induce the respiratory allergic reactivity and those that identify the food-related allergic pathology. It is also essential to identify those molecular allergens whose immunoreactivity is able to connect the two clinical conditions: respiratory symptoms and food allergy symptoms. The present study was conducted on 50 patients with a clinical history of hypersensitivity to pollen and/or allergy and positivity to Skin Prick Test. The sera were analyzed in our laboratories and the panel of recombinant allergens was applied in the case of positivity of the specific IgE. Of the 50 patients enrolled, 31 were selected as positive to 4 main pan-allergen Bet v1, Par j2, Art v1 and Phl p1; among these, 14 subjects showed one allergen-specific IgE towards natural extracts of tested foods even in absence of clinical history. CRD allows for an increased accuracy in allergy diagnosis and prognosis and plays an important role in: a) resolving genuine vs cross-reactive sensitization in poly-sensitized patients, b) assessing, in selected cases, the risk of severe, systemic vs mild, local reactions in food allergy, and c) identifying patients and triggering allergens for specific immunotherapy (ITS). In light of our results, we believe that the transition from a diagnostic based on the use of allergenic extracts to another one based on the use of single allergenic molecules that is able to define the specific allergenic profile of each patient, seems to be able to revolutionize the allergy diagnosis.
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Affiliation(s)
- G Di Spigna
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - P Ladogana
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - B Covelli
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - M Ricciardone
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - S Salzano
- Institute of Experimental Endocrinology and Oncology "G. Salvatore" (National Research Council), Naples, Italy
| | - D Spalletti Cernia
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - I Mormile
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - G Varriale
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - O Catapano
- Italian Association of Pharmacogenomics and Molecular Diagnostics, Ancona, Italy
| | - G Spadaro
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
| | - M Mormile
- Department of Clinical and Surgical Medicine University of Naples "Federico II", Naples, Italy
| | - L Postiglione
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy.,Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, Naples, Italy
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Cimmino I, Faggiano A, Perruolo G, Modica R, Bottiglieri F, Covelli B, Colao A, Beguinot F, Formisano P, Oriente F. Diagnosis of Flier's syndrome in a patient with nondiabetic hypoglycemia: a case report and critical appraisal of the literature. Endocrine 2020; 69:73-78. [PMID: 32274699 DOI: 10.1007/s12020-020-02287-4] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/25/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Autoimmune hypoglycemia includes rare syndromes characterized by the presence of either anti-insulin antibodies (IAA) (Hirata's disease) or anti-insulin receptor (anti-ISR) antibodies (Flier's syndrome). Diagnosis is usually based on identification of the specific antibodies, in presence of the Whipple triad. However, most of these cases are classified as idiopathic diseases due to the difficulty to define the pathogenic culprit. METHODS Basic research methodologies, including Western Blot and ELISA tests, have been used in this study. RESULTS We describe a 21-year-old young woman (PT), non-obese and non-diabetic, with a positive history of autoimmune diseases, admitted to the hospital for recurrent episodes of severe symptomatic hypoglycemia. Counterregulatory response to hypoglycemia was normal as well as the fasting test, so excluding both hormone deficiencies and insulinoma. Since an autoimmune hypoglycemic syndrome was suspected, the hyperactivation of the insulin pathway was experimentally evaluated. At this purpose, human hepatocarcinoma (HepG2) cells were incubated with serum obtained from the patient (PT) and from control individuals. Interestingly, a significant increase of phosphorylation of insulin receptor, Akt, and ERK1/2 was observed in the HepG2 cells incubated with PT serum compared with the controls. ELISA tests revealed significantly increased levels of anti-ISR antibodies in PT serum, while IAA were similar both in PT and in control sera, supporting diagnosis of Flier's syndrome. CONCLUSIONS This study emphasizes the importance to identify new strategies for the differential diagnosis of hypoglycemia, not always possible with the routinely used diagnostic tests.
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Affiliation(s)
- Ilaria Cimmino
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy
| | | | - Giuseppe Perruolo
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy
| | - Roberta Modica
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Filomena Bottiglieri
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Bianca Covelli
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy
| | - Annamaria Colao
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Francesco Beguinot
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy
| | - Pietro Formisano
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy.
| | - Francesco Oriente
- Department of Translational Medicine, Federico II University of Naples and URT "Genomic of Diabetes" of Institute of Experimental Endocrinology and Oncology, National Council of Research (CNR), Naples, Italy
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10
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Di Spigna G, Iannone M, Ladogana P, Salzano S, Ventre M, Covelli B, De Marinis E, Postiglione L. Human cardiac multipotent adult stem cells in 3D matrix: new approach of tissue engineering in cardiac regeneration post-infarction. J BIOL REG HOMEOS AG 2017; 31:911-921. [PMID: 29254293] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Myocardial infarction is the leading cause of morbidity and mortality in developed countries. It causes a left ventricular dysfunction, mainly due to the loss of functional tissue, resulting in heart failure. New therapies are being developed, using a tissue engineering approach, with the ultimate goal of restoring cardiac function by regenerating and repairing the damaged myocardium. In the present study we investigated the behaviour of a specific population of c-kit positive human cardiac stem cells, called Multipotent Adult Stem Cells (MASCs), grown within three-dimensional collagen scaffolds (3D), to establish whether they could be used in post-infarction cardiac regeneration. We also evaluated the expression levels of the Granulocyte Macrophage-Colony Stimulating Factor Receptor (GM-CSFR) and endoglin, a component of the Transforming Growth Factor beta (TGF-ß) receptor complex. Finally, we also evaluated the expression of the α2β1integrin. MASCs cultured within 3D collagen matrices are able to proliferate and migrate even in the absence of chemotactic agents and express high levels of factors involved in cell proliferation and migration, such as GM-CSFRα chain and integrins. They therefore represent a promising approach to tissue engineering aimed to restore cardiac function. Our results also suggest a role of GM-CSF in cell proliferation, while TGF-β does not seem to be relevant.
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Affiliation(s)
- G Di Spigna
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - M Iannone
- Interdisciplinary Research Centre on Biomaterials. Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Italy
| | - P Ladogana
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - S Salzano
- Institute of Experimental Endocrinology and Oncology G. Salvatore (National Research Council), Naples, Italy
| | - M Ventre
- Interdisciplinary Research Centre on Biomaterials. Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Italy
| | - B Covelli
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - E De Marinis
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - L Postiglione
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
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Di Spigna G, Del Puente A, Covelli B, Abete E, Varriale E, Salzano S, Postiglione L. Vitamin D receptor polymorphisms as tool for early screening of severe bone loss in women patients with rheumatoid arthritis. Eur Rev Med Pharmacol Sci 2016; 20:4664-4669. [PMID: 27906437] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Rheumatoid Arthritis (RA) is an autoimmune inflammatory disease that leads to local and systemic arthritis and bone loss. Exploring genetic markers of candidate genes in osteoporosis and inflammatory cytokine genes could be a useful tool for the early identification of bone loss and fracture risk in RA patients. The target of this study is the evaluation and correlation between of Single Nucleotide Polymorphisms (SNPs) of Vitamin D Receptor (VDR) and possible effects on bone loss in RA. PATIENTS AND METHODS 40 Caucasian patients with RA (26 of them with a severe bone loss) and 40 healthy donors as control samples were genotyped for the VDR SNPs (called BsmI, ApaI, TaqI and FokI). The detection method is based on Restriction Fragment Length Polymorphism (RFLP). RESULTS Genotyping profile shown no difference between RA patients and controls. Only VDR-TaqI genotype (TT vs. tt) seem to influence the bone density in females, but not in males. The mean differences of Bone Mass Density (BMD) at the lumbar spine in RA women with the tt allele were 4.7% compared to 0.1% in women with the TT allele (p < 0.05). CONCLUSIONS The results of these studies support an association between specific VDR alleles and bone loss in RA. The TaqI t and BsmI B alleles were associated with an accelerated bone loss in RA, but not with a focal bone loss. These effects of VDR genotypes and vitamin D supplementation are not unexpected, given that the central pathological feature in RA is bone and joint destruction. The VDR SNPs genotyping should be a useful tool to screen early women RA patients with the bone loss.
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Affiliation(s)
- G Di Spigna
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy.
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12
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Spatuzza C, Postiglione L, Covelli B, Ricciardone M, Benvenuti C, Mondola P, Belfiore A. Effects of berberine and red yeast on proinflammatory cytokines IL-6 and TNF-α in peripheral blood mononuclear cells (PBMCs) of human subjects. Front Pharmacol 2014; 5:230. [PMID: 25368579 PMCID: PMC4202723 DOI: 10.3389/fphar.2014.00230] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 03/24/2014] [Accepted: 09/29/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND AIMS Obesity is a condition associated with chronic or acute inflammatory response characterized by an increase of proinflammatory cytokine levels. Peripheral blood mononuclear cells (PBMCs) migrate in adipose tissue inducing synthesis and secretion of adipocytokines as IL-6 and TNF-α. The aim of this study was to investigate the effect of berberine (a natural alkaloid) and red yeast (a natural antioxidant) on IL-6 and TNF-α cytokines release and gene expression, in circulating lipopolisaccarides (LPS) stimulated PBMCs. METHODS AND RESULTS PBMCs isolated from whole blood of healthy donors were stimulated with LPS to induce cytokines production; simultaneously cells were treated with increasing doses of berberine and red yeast. The substances were administered alone or in association. IL-6 and TNF-α protein levels in the culture medium and their mRNA levels were assessed by ELISA and real time PCR, respectively. Berberine and red yeast treatment prevented the LPS induction of IL-6 release in the culture medium of PBMCs. In addition, berberine plus red yeast treatment showed a synergic inhibitory effect on IL-6 release at low concentration. Berberine and red yeast showed an inhibitory effect also on LPS induction of TNF-α release exerting a synergic effect mainly at high concentrations. On the contrary, berberine and red yeast did not significantly affect IL-6 and TNF-α mRNA levels induced by LPS. In this case, only concomitant treatment of PBMCs with high doses of berberine and red yeast inhibits LPS induced IL-6 or TNF-α mRNA levels. CONCLUSIONS The results of our study show that both berberine and red yeast were able to carry out anti-inflammatory action through an inhibition of proinflammatory IL-6 and TNF-α protein release. Moreover, when given in combination these substances were able to inhibit IL-6 and TNF-α gene expression in PBMCs activated by LPS. Therefore, these substances could represent a useful pharmacological treatment to reduce the proinflammatory status accompanied with obesity.
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Affiliation(s)
- Carmen Spatuzza
- Unità di Fisiologia, Dipartimento di Medicina Clinica e Chirurgia, University "Federico II" Naples, Italy
| | - Loredana Postiglione
- Unità di Patologia Clinica, Dipartimento di Scienze Mediche Traslazionali, University "Federico II" Naples, Italy
| | - Bianca Covelli
- Unità di Patologia Clinica, Dipartimento di Scienze Mediche Traslazionali, University "Federico II" Naples, Italy
| | - Margherita Ricciardone
- Unità di Patologia Clinica, Dipartimento di Scienze Mediche Traslazionali, University "Federico II" Naples, Italy
| | | | - Paolo Mondola
- Unità di Fisiologia, Dipartimento di Medicina Clinica e Chirurgia, University "Federico II" Naples, Italy
| | - Anna Belfiore
- Unità di Fisiologia, Dipartimento di Medicina Clinica e Chirurgia, University "Federico II" Naples, Italy
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Coinu R, Galleri G, Pippia P, Tilocca MG, Meloni M, Covelli B, Chiaviello A, Palumbo G. Microgravity alters basal and insulin-mediated metabolic activity of normal and neoplastic cells. J Gravit Physiol 2004; 11:P185-6. [PMID: 16237830] [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] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In this paper we report the behaviour of normal vascular smooth muscle cells and transformed breast cancer cells under normal versus simulated microgravity conditions by comparing cell proliferation, Glucose transport, Methionine uptake and protein synthesis. Modeled microgravity profoundly affects cell growth (especially in normal cells) and Glucose or Methionine metabolism (although to different extent in the two cell lines). Since both cells own responsive insulin receptors, the comparison was extended to insulin-stimulated versus unstimulated conditions. We report that the detected metabolic changes were strongly enhanced when the cells were simultaneously stimulated with insulin and subjected to modeled microgravity stress. Such observations may have important returns for human health in space; they deserve further attention.
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Affiliation(s)
- Rita Coinu
- Dpt. di Scienze Fisiologiche Biochimiche e Cellulari-Università di Sassari, Sassari, Italy.
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Ragno P, Montuori N, Covelli B, Hoyer-Hansen G, Rossi G. Differential expression of a truncated form of the urokinase-type plasminogen-activator receptor in normal and tumor thyroid cells. Cancer Res 1998; 58:1315-9. [PMID: 9515821] [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: 02/06/2023]
Abstract
We studied the urokinase-type plasminogen activator (uPA) receptor (uPA-R) in normal and neoplastic human thyroid cells. It has recently been shown that cleaved forms of uPA-R display an extremely strong chemotactic activity. Normal human thyroid TAD-2 cells express the intact form of the uPA-R and a truncated form lacking the uPA-binding domain on their surface, in a similar manner to tumor thyroid cell lines. However, in tumor thyroid cell lines, the amount of the truncated form is variable: high in papillary carcinoma cells, very low in follicular carcinoma cells, and not detectable in anaplastic carcinoma cells. Similar studies on primary cell cultures confirm the presence of the truncated form of uPA-R in normal and in papillary carcinoma cells and its partial or total loss in follicular carcinoma cells. The presence of truncated uPA-R correlates to uPA secretion, except in papillary carcinoma cells, which express the truncated form of uPA-R but do not release uPA. uPA-R is also able to act as an adhesion receptor by binding vitronectin (VTN) and interacting with integrins. We observe that removal of uPA-R from the surface of normal thyroid and anaplastic carcinoma cells by phosphatidylinositol-specific phospholipase C or treatment with anti-uPA-R antibodies decreases the adhesion of both cell types to VTN and, less efficiently, to fibronectin or collagen. On the other hand, uPA treatment strongly increases the adhesion of anaplastic carcinoma cells specifically to VTN.
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Affiliation(s)
- P Ragno
- Centro di Endocrinologia ed Oncologia Sperimentale, Consiglio Nazionale delle Ricerche, Naples, Italy
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Lembo M, Covelli B, Nani E, Lavitola A. Evaluation of pefloxacin activity against recent clinical isolates. J Chemother 1991; 3 Suppl 1:51-3. [PMID: 12041785] [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: 02/25/2023]
Abstract
The in-vitro antibacterial activity of pefloxacin, a new quinolone carboxylic acid, was tested against 1140 bacterial strains, recently clinically isolated, by measuring the minimum inhibitory concentrations. Comparisons were made with other quinolones (enoxacin, norfloxacin, flumekin, oxolinic acid, pipemidic acid) and other drugs (piperacillin, cefotaxime, ceftazidime, gentamicin, tobramycin, amikacin) widely used for the treatment of bacterial infections. Pefloxacin was very active against the tested species and was the most active drug against all the bacterial strains, with a geometric mean of MICs, a MIC 50 and MIC 90 of 0.27, 0.12 and 4 microg/ml respectively.
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Affiliation(s)
- M Lembo
- Department of Cellular and Molecular Biology and Pathology, II Medical School, Faculty of Pharmacy, University of Naples, Italy
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Abstract
The in vitro antibacterial activity of ciprofloxacin, a new quinoline carboxylic acid, was tested against 1671 recently clinically isolated bacterial strains, by measuring the minimum inhibitory concentrations (MIC). Comparisons were made with other quinolones: nalidixic acid, norfloxacin, and other drugs: piperacillin, cefoxitin, cefotetan, ceftazidime, tobramycin, rifampin, tetracycline, chloramphenicol. Ciprofloxacin was very active against the tested species and was the most active drug against all the bacterial strains, with a geometric mean, a MIC50 and MIC90 of 0.27, 0.12 and 2 micrograms/ml, respectively.
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Affiliation(s)
- E Nani
- Department of Cellular and Molecular Biology and Pathology, II Medical School, University of Naples, Italy
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Nani E, Anzivino D, Lavitola A, Lembo M, Covelli B. Evaluation of ofloxacin activity against recent clinical isolates. J Chemother 1989; 1:145-6. [PMID: 16312345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- E Nani
- Laboratories of Microbiology, Department of Cellular and Molecular Biology and Pathology, II Medical School, University of Naples, Italy
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Anzivino D, Nani E, Gulletta E, Lembo M, Covelli B. Evaluation of in vitro activity of teicoplanin against gram-positive anaerobic bacteria. J Chemother 1989; 1:201-2. [PMID: 16312368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- D Anzivino
- Laboratories of Microbiology, Department of Cellular and Molecular Biology and Pathology, II Medical School, University of Naples, Italy
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Fiorentino F, De Sena R, Manzillo E, Iadanza A, Conte M, Coppola MG, Galderisi P, Postiglione A, Arciello MT, Covelli B. [Monotherapy, empirical and targetted, with imipenem-cilastatin in sepsis of bacterial origin]. Clin Ter 1989; 129:287-91. [PMID: 2527122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The authors describe an open study in 22 patients with febrile conditions of unknown origin who were treated with imipenem-cilastatin while waiting for routine laboratory and culture tests. These were done immediately at the patients' entry into hospital, after which imipenem-cilastatin treatment was started immediately, and was subsequently confirmed by the isolates and culture tests. The drug was found to be active and to eradicate the responsible organism in all cases. In addition, it was found to be easy to handle and not to give rise to side-effects or changes in laboratory tests.
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Nani E, Amato G, Anzivino D, Covelli B, Lembo M. Evaluation of in vitro activity of teicoplanin against recent clinical isolates. Chemioterapia 1988; 7:20-3. [PMID: 2967737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The in vitro antibacterial activity of teicoplanin, a new glycopeptide antibiotic, previously named teichomycin A2, has been compared to that of five other chemoantibiotics: netilmicin, clindamycin, rifampicin, enoxacin and vancomycin. The minimum inhibitory concentration (MIC) values against 588 gram-positive strains, 561 facultative aerobes and 27 anaerobes, recently isolated from clinical specimens, were evaluated. Teicoplanin showed the highest activity against all the tested strains, with a geometrical mean of the MICs (GMM), a MIC50 and MIC90 of 0.123, 0.12 and 0.5 micrograms/ml respectively.
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Affiliation(s)
- E Nani
- Department of Cellular and Molecular Biology and Pathology, II Medical School, University of Naples, Italy
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Amato G, Nani E, Covelli B, Mattina R, Cocuzza G, Pappalardo C, Chisari G, Lo Bue AM, Gismondo MR, Nicoletti G. [Bactericidal and potent antiadhesive activity of sulbenicillin]. G Batteriol Virol Immunol 1986; 79:204-15. [PMID: 3135222] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Sulbenicillin, a wide broad spectrum penicillin, is active against a lot of gram positive and gram negative bacteria. The AA. studied the activity of this molecule against urinary infections causing germs, by evaluating two parameters: his antiadhesive capability and the Killing curves, in comparison with mezlocillin and piperacillin. An inhibition in adhesive capability of test-germs, due to sulbenicillin was obtained. Furthermore, resulting Killing curves showed more rapidity in action for sulbenicillin than for the two others molecules, versus resistant germs, like P. aeruginosa and S. faecalis.
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Affiliation(s)
- G Amato
- Dipartimento di Biologia e Patologia cellulare e moleculare, Università di Napoli
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Covelli B, Varadi G, Nielsen L, Lewis M. Simulation of containment cooling with outside spray after a core meltdown. Nuclear Engineering and Design 1982. [DOI: 10.1016/0029-5493(82)90286-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Rizzi MA, Covelli B, Bivetti J, Lüthi B. [Biomechanics of vertebral segments. Clinical and prognostical interpretations (author's transl)]. Arch Orthop Unfallchir 1977; 87:111-6. [PMID: 836218 DOI: 10.1007/bf00416144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The authors propose a new model to estimate the forces of the intrinsic equilibrium of the segment. Based on the theory of the so-called transient pole, it became possible to describe the momentary movement of an angle relative to its neighbour and to define the way of the intrinsic equilibrium. This transient pole fixes the centre of rotation around which the upper angle moves relative to the lower vertebral body. Normal and pathological cases can be diagnosed at once by use of a special röntgenological appliance in connection with the statistical experience. It becomes possible to calculate the forces and movements acting on a segment.
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Rizzi M, Covelli B. [Contribution toward determining the inner equilibrium of the spinal column (pivotal point as temporary pole) (author's transl)]. Z Orthop Ihre Grenzgeb 1976; 114:828-32. [PMID: 997739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The estimation of the centre of rotation of a spine segment can be shown as a transient pole, which follows the polar curve of the movement of the upper segment of the spine, relative to the lower one. With the help of X-ray, it is possible to evaluate two separate positions of the pole, from the normal position to the medium flexion and from the medium to the extreme flexion of the lumbal segment. Based on these expected values, as well as their intervals, pathological cases can be recognized, which is also shown in an example.
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Rizzi MA, Covelli B. [Can the human posture be explained by biomechanics? (author's transl)]. Z Orthop Ihre Grenzgeb 1976; 114:833-6. [PMID: 997740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Up to now, lacking a bio-mechanical model, human posture has only been examined morphologically, although the physics of posture respond to simple laws. With the help of a physical model, based on the hypothesis of a minimal rotating movement of the trunk and head from the spine, this report gives a description of a normal posture. The model can be extended mathematically to establish a computer simulation of each case examined by X-ray, showing which posture would use the smallest amount of ligamentary and muscular force. The above bio-mechanical analyses of the spine as a whole is being further examined and improved mathematically.
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Rizzi MA, Covelli B. [Biomechanic contribution to measurement of power and action of neck muscles (author's transl)]. Z Orthop Ihre Grenzgeb 1975; 113:371-7. [PMID: 1179805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The position of the head depends on the function of the neck-muscles. Once the power of stabilization has been exhausted, the ligaments, particularly the superficial posterior, are stressed. A mathematical model has been developed for measuring the power of the muscles. This enables us to find out when and to which degree stress on the ligaments contributes to stabilization.
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