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Affiliation(s)
- Armando Ferrera
- Department of Clinical and Molecular Medicine and Specialty School in Cardiovascular Disease, Faculty of Medicine and Psychology, ''Sapienza'' University of Rome, Italy
| | - Allegra Battistoni
- Department of Clinical and Molecular Medicine and Specialty School in Cardiovascular Disease, Faculty of Medicine and Psychology, ''Sapienza'' University of Rome, Italy
| | - Massimo Volpe
- Department of Clinical and Molecular Medicine and Specialty School in Cardiovascular Disease, Faculty of Medicine and Psychology, ''Sapienza'' University of Rome, Italy
- IRCCS San Raffaele Rome, Italy
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Piras L, Zuccanti M, Russo P, Riccio F, Agresti A, Lustri C, Dardani D, Ferrera A, Fiorentini V, Tocci G, Tini Melato G, Volpe M, Barbato E, Battistoni A. Association between Immune Checkpoint Inhibitors and Atherosclerotic Cardiovascular Disease Risk: Another Brick in the Wall. Int J Mol Sci 2024; 25:2502. [PMID: 38473748 DOI: 10.3390/ijms25052502] [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: 12/29/2023] [Revised: 02/11/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
In recent years, immune checkpoint inhibitors have significantly changed the field of oncology, emerging as first-line treatment, either alone or in combination with other regimens, for numerous malignancies, improving overall survival and progression-free survival in these patients. However, immune checkpoint inhibitors might also cause severe or fatal immune-related adverse events, including adverse cardiovascular events. Initially, myocarditis was recognized as the main immune checkpoint inhibitor-related cardiac event, but our knowledge of other potential immune-related cardiovascular adverse events continues to broaden. Recently, preclinical and clinical data seem to support an association between immune checkpoint inhibitors and accelerated atherosclerosis as well as atherosclerotic cardiovascular events such as cardiac ischemic disease, stroke, and peripheral artery disease. In this review, by offering a comprehensive overview of the pivotal role of inflammation in atherosclerosis, we focus on the potential molecular pathways underlying the effects of immune checkpoint inhibitors on cardiovascular diseases. Moreover, we provide an overview of therapeutic strategies for cancer patients undergoing immunotherapy to prevent the development of cardiovascular diseases.
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Affiliation(s)
- Linda Piras
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Michela Zuccanti
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Paola Russo
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Francesca Riccio
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Antonio Agresti
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Camilla Lustri
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Domenico Dardani
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Armando Ferrera
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Vincenzo Fiorentini
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Giuliano Tocci
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Giacomo Tini Melato
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Massimo Volpe
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
- IRCCS San Raffaele, 00166 Rome, Italy
| | - Emanuele Barbato
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Allegra Battistoni
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
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Mistrulli R, Ferrera A, Muthukkattil ML, Battistoni A, Gallo G, Barbato E, Spera FR, Magrì D. Atrial Fibrillation in Patients with Hypertrophic Cardiomyopathy and Cardiac Amyloidosis: From Clinical Management to Catheter Ablation Indication. J Clin Med 2024; 13:501. [PMID: 38256635 PMCID: PMC10816101 DOI: 10.3390/jcm13020501] [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: 11/06/2023] [Revised: 01/11/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Atrial fibrillation (AF) is the most common arrhythmia in patients affected by cardiomyopathies. Reports estimate a prevalence of 27% in patients with hypertrophic cardiomyopathy (HCM) and 40% in patients with cardiac amyloidosis (CA). The presence of AF typically results in progressive functional decline, an increased frequency of hospitalizations for heart failure, and a higher thromboembolic risk. Medical management using mainly beta-blockers or amiodarone has produced variable outcomes and a high rate of recurrence. Catheter ablation reduces symptom burden and complications despite a moderate rate of recurrence. Recent evidence suggests that an early rhythm control strategy may lead to more favorable short- and long-term outcomes. In this review, we summarize contemporary data on the management of AF in patients with cardiomyopathy (HCM and CA) with particular reference to the timing and outcomes of ablation procedures.
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Affiliation(s)
- Raffaella Mistrulli
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Rome, Italy; (A.F.); (M.L.M.); (A.B.); (G.G.); (E.B.); (D.M.)
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Ferrera A, Gallo G, Volpe M. Obesity and Overweight: The "Elephant in the Room" That We can No Longer Ignore: Time to SELECT Treatments. High Blood Press Cardiovasc Prev 2024; 31:3-6. [PMID: 38310634 PMCID: PMC10925568 DOI: 10.1007/s40292-024-00626-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/17/2024] [Indexed: 02/06/2024] Open
Affiliation(s)
- Armando Ferrera
- Department of Clinical and Molecular Medicine, University of Rome Sapienza, Rome, Italy
| | - Giovanna Gallo
- Department of Clinical and Molecular Medicine, University of Rome Sapienza, Rome, Italy
| | - Massimo Volpe
- Department of Clinical and Molecular Medicine, University of Rome Sapienza, Rome, Italy.
- IRCCS San Raffaele Rome, Rome, Italy.
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Volpe M, Ferrera A, Piccinocchi R, Morisco C. The Emerging Role of Prediabetes and Its Management: Focus on L-Arginine and a Survey in Clinical Practice. High Blood Press Cardiovasc Prev 2023; 30:489-496. [PMID: 38060094 PMCID: PMC10721705 DOI: 10.1007/s40292-023-00613-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/21/2023] [Indexed: 12/08/2023] Open
Abstract
The worldwide impressive growth of metabolic disorders observed in the last decades, especially type 2 diabetes mellitus and obesity, has generated great interest in the potential benefits of early identification and management of patients at risk. In this view, prediabetes represents a high-risk condition for the development of type 2 diabetes mellitus and cardiovascular diseases, and an ideal target to intercept patients before they develop type 2 diabetes gaining a prominent role even in international guidelines. For prediabetic individuals, lifestyle modification is the cornerstone of diabetes prevention, with evidence of about 50% relative risk reduction. Accumulating data also show potential benefits from pharmacotherapy. In this context, the only available data pertain to metformin as a pharmaceutical drug and vitamin D and L-arginine as nutraceuticals. L-arginine appears to be a very interesting tool in the clinical management of patients with pre-diabetes. In this review we summarize the current knowledge on the role of L-arginine in prediabetes as a potentially useful preventive strategy against the progression to type 2 diabetes, with a particular focus on the underlying molecular mechanisms and the past and ongoing trials. In this article we also report the interesting data about the perception of the prediabetic condition and its therapeutic management in the clinical practice in Italy. An early identification and a prompt management of people with prediabetes appears to be of paramount importance to prevent the progression to diabetes and avoid its cardiovascular consequences.
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Affiliation(s)
- Massimo Volpe
- Department of Clinical and Molecular Medicine, ''Sapienza'' University of Rome, Rome, Italy.
- IRCCS San Raffaele, Rome, Italy.
| | - Armando Ferrera
- Department of Clinical and Molecular Medicine, ''Sapienza'' University of Rome, Rome, Italy
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Ferrera A, Battistoni A, Lanza O, Rossi C, Tocci G, Volpe M. Low Perception of Obesity as a Pathological Condition Among Italian Cardiologists. High Blood Press Cardiovasc Prev 2023:10.1007/s40292-023-00588-z. [PMID: 37493899 DOI: 10.1007/s40292-023-00588-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 05/29/2023] [Indexed: 07/27/2023] Open
Abstract
INTRODUCTION Obesity is not only an important modifiable cardiovascular risk factor but also a chronic disease with relevant consequences on morbidity and mortality in the general population. According to European guidelines, cardiologists must recognize and treat it properly. AIMS To assess perception of obesity as a modifiable pathological condition and the importance to treat it in a real-world sample of cardiologists and residents in cardiology. METHODS A nationwide, web-based, epidemiological survey on the perception of obesity as a disease and as a modifiable cardiovascular risk factors was conducted in 137 medical doctors (cardiologists and residents in cardiology). Participants filled with their answers a questionnaire of 31 questions about perception of obesity and strategies on cardiovascular disease prevention in clinical practice. RESULTS Of 137 individuals enrolled in our survey only 5 (3.6%) reported to measure waist circumference in their clinical practice and only 3 (2.2%) reported to measure waist-to-hip ratio. One-hundred-twenty participants (87.6%) would not prescribe an anti-obesity drug to a patient with grade II obesity. Sixty-eight (49.6%) participants have never read or heard of a clinical trial on obesity. On the other hand, 134 (97.8%) routinely measured blood pressure in their clinical practice, 129 (94.2%) would prescribe a statin for a hypercholesterolemic patient and 132 (96.4%) subjects have read/heard a clinical trial on type 2 diabetes in their life. CONCLUSIONS Although obesity is a chronic disease and an important modifiable cardiovascular risk factor such as arterial hypertension, hypercholesterolemia, cigarette smoke and diabetes, cardiologists and residents in cardiology substantially underestimate it ignoring that it should be treated as a proper disease.
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Affiliation(s)
- Armando Ferrera
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Sant'Andrea Hospital, Rome, Italy.
| | - Allegra Battistoni
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Sant'Andrea Hospital, Rome, Italy
| | - Oreste Lanza
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Sant'Andrea Hospital, Rome, Italy
| | - Chiara Rossi
- Presidio Ospedaliero Santo Spirito in Sassia, Rome, Italy
| | - Giuliano Tocci
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Sant'Andrea Hospital, Rome, Italy
| | - Massimo Volpe
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, University of Rome Sapienza, Sant'Andrea Hospital, Rome, Italy
- IRCCS San Raffaele, Rome, Italy
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7
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Mistrulli R, Ferrera A, Muthukkattil ML, Volpe M, Barbato E, Battistoni A. SARS-CoV-2 Related Myocarditis: What We Know So Far. J Clin Med 2023; 12:4700. [PMID: 37510815 PMCID: PMC10380706 DOI: 10.3390/jcm12144700] [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: 05/27/2023] [Revised: 07/09/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
A minority of patients with severe acute respiratory syndrome coronavirus 2 (COVID-19) develop cardiovascular complications, such as acute cardiac lesions with elevated troponins, de novo systolic heart failure, pericardial effusion and, rarely, acute myocarditis. The prevalence of COVID-19-related myocarditis ranges from 10 to 105 cases per 100,000 COVID-19-infected individuals, with a male predominance (58%) and a median age of 50 years. The etiopathogenetic mechanism is currently unclear, but may involve direct virus-mediated damage or an exaggerated immune response to the virus. Mortality is high, as fulminant myocarditis (FM) develops very often in the form of cardiogenic shock and ventricular arrhythmias. Hence, medical therapy with ACE inhibitors and beta-blockers may not always be sufficient, in which case inotropic and immunosuppressive drugs, most commonly corticosteroids, may be necessary. In this review we analyze the current data on COVID-19 myocarditis, management strategies and therapy, with a brief description of COVID-19 vaccine-associated myocarditis to help clinicians dealing with this peculiar form of myocarditis.
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Affiliation(s)
- Raffaella Mistrulli
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
| | - Armando Ferrera
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
| | - Melwyn Luis Muthukkattil
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
| | - Massimo Volpe
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
- IRCCS San Raffaele, 00163 Roma, Italy
| | - Emanuele Barbato
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
| | - Allegra Battistoni
- Clinical and Molecular Medicine Department, Sapienza University of Rome, 00185 Roma, Italy; (A.F.); (M.V.); (E.B.); (A.B.)
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Swinton M, Mariam N, Tan J, Murphy K, Elumalai T, Soni M, Ferrera A, Richardson C, Walshaw R, Mistry H, Ramani V, Song Y, Birtle A, Henry A, Chan J, Hoskin P, Choudhury A. Clinical Outcomes in cN+M0 Bladder Cancer Patients: Can Bladder be Spared? Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.474] [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: 11/15/2022]
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Challapalli A, Ratnayake G, McGrane J, Frazer R, Gupta S, Parslow D, Kingdon S, Lydon A, Sharma A, Tuthill M, McCusker C, Ford V, Ferrera A, Malik J, Boh Z, Jones E, T.R. Geldart, Nelmes S, Brown J, Bahl A. 1463P Patterns of care and outcomes of metastatic renal cell carcinoma (mRCC) patients (pts) with bone metastases (BM): A UK multicenter review. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1566] [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: 11/01/2022] Open
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Alchawaf A, Dawod M, Al-Ani M, Barriuso J, Ferrera A, Ho A, Braun M, Paton N, Saunders M, Wilson G, Alam N, Hasan J, Marti FM, Kamposioras K, Mullamitha S. P-339 Real-world data (RWD) of the use of trifluridine/tipiracil hydrochloride (TFT) in patients with metastatic colorectal cancer: The Greater Manchester experience. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.421] [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: 10/23/2022] Open
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Bagnato G, Cordova F, Sciortino D, Fiorenza A, Ferrera A, Coppolino G, Sangari D, Roberts W, Gangemi S, Bruno A, Muscatello M, Pandolfo G, Zoccali R, Bagnato G. SAT0226 Circulating Serum Levels of Cortisol Are Associated with The Pain Threshold in Systemic Sclerosis: Correlations with Depression. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5015] [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: 11/03/2022]
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Ciprandi G, Fenoglio D, Di Gioacchino M, Ferrera A, Ferrera F, Sormani MP, Marseglia GL. Sublingual immunotherapy provides an early increase of interferon-gamma production. J BIOL REG HOMEOS AG 2008; 22:169-173. [PMID: 18842170] [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: 05/26/2023]
Abstract
Allergic rhinitis (AR) is characterized by Th2 polarized immune response. Allergen-specific subcutaneous immunotherapy may restore a physiologic Th1 profile. However, there are few studies investigating the immunological effects of sublingual immunotherapy (SLIT). The aim of this study is to investigate whether a pre-seasonal SLIT course could affect IFN-gamma production. Forty-four AR patients with pollen allergy assumed pre-seasonal SLIT for 3 months. IFN-gamma-specific producing cells were assessed by cytokine ELISPOT before and 3 months after the beginning of SLIT. Visual analogue scale (VAS) for symptoms and medication score was also evaluated. The frequency of IFN-gamma-specific producing cells significantly increased after SLIT (p<0.01), and this increase was significantly associated with improvement of both symptoms (p<0.001) and medication use (p<0.01). In conclusion, these results may be considered clinically relevant as SLIT treatment may induce a quick IFN- gamma response that is related to clinical improvement.
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Affiliation(s)
- G Ciprandi
- Azienda Ospedaliera Universitaria San Martino and DIMI-CEBR, University of Genoa, Genoa, Italy.
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Fenoglio D, Ferrera A, Ferrera F, Sormani M, di Gioacchino M, Ciprandi G. Patients with Allergic Rhinitis Show an Allergen-Specific Interferon-Gamma Defect. EUR J INFLAMM 2008; 6:87-91. [DOI: 10.1177/1721727x0800600206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2023] Open
Abstract
Allergic rhinitis (AR) is characterized by Th2 polarized immune response. Consequently, allergic patients have a defect in IFN-γ production. So far, however, all the experimental studies have investigated only the IFN-γ production induced by the causal allergen. The aim of this study is to investigate whether there is a difference in the in vitro IFN-γ production, using different allergens as stimuli, in patients presenting with rhinitis due to pollen allergy. Forty-one AR patients with pollen allergy were enrolled. IFN-γ-specific producing cells were stimulated with PHA, causal pollen, and House Dust Mite (HDM). IFN-γ production was assessed by cytokine ELISPOT. IFN-γ production of peripheral blood mononuclear cells (PBMC) stimulated by specific pollen was significantly lower than IFN-γ production of PBMC stimulated by HDM (p<0.001). IFN-γ production of PBMC stimulated by specific pollen was significantly lower than IFN-γ production of PBMC stimulated by PHA (p<0.001). Moreover, in the HDM-sensitized patients, there seems to be a trend for a different defect. The present study highlights that the defective IFN-γ production is allergen specific and that HDM sensitization may also affects this parameter.
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Affiliation(s)
| | | | | | - M.P. Sormani
- Unit of Biostatistics, Dept. of Health Sciences, University of Genoa
| | - M. di Gioacchino
- Allergy Related Disease Unit, “G. d'Annunzio University” Foundation, Chieti, Italy
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14
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Durando P, Fenoglio D, Boschini A, Ansaldi F, Icardi G, Sticchi L, Renzoni A, Fabbri P, Ferrera A, Parodi A, Bruzzone B, Gabutti G, Podda A, Del Giudice G, Fragapane E, Indiveri F, Crovari P, Gasparini R. Safety and immunogenicity of two influenza virus subunit vaccines, with or without MF59 adjuvant, administered to human immunodeficiency virus type 1-seropositive and -seronegative adults. Clin Vaccine Immunol 2008; 15:253-9. [PMID: 18003811 PMCID: PMC2238067 DOI: 10.1128/cvi.00316-07] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Revised: 08/31/2007] [Accepted: 11/01/2007] [Indexed: 11/20/2022]
Abstract
The objective of this study was to evaluate and compare both the safety and tolerability and the humoral and cell-mediated immune responses for two influenza virus subunit vaccines, one with MF59 adjuvant (Fluad) and one without an adjuvant (Agrippal), in healthy and in human immunodeficiency virus type 1 (HIV-1)-infected adult individuals. To achieve this aim, an open, randomized, comparative clinical trial was performed during the 2005-2006 season. A total of 256 subjects were enrolled to receive one dose of vaccine intramuscularly. Blood samples were taken at the time of vaccination and at 1 and 3 months postvaccination. A good humoral antibody response was detected for both vaccines, meeting all the criteria of the Committee for Medical Products for Human Use. After Beyer's correction for prevaccination status, Fluad exhibited better immunogenicity than Agrippal, as shown from the analysis of the geometric mean titers, with significant differences for some virus strains; however, no definitive conclusions on the clinical significance of such results can be drawn, because the method used to estimate antibody response is currently nonstandard for influenza virus vaccines. Significant induction of an antigen-specific CD4+ T-lymphocyte proliferative response was detected at all time points after immunization, for both the vaccines, among HIV-1-seronegative subjects. This was different from what was observed for HIV-1-infected individuals. In this group, significance was not reached at 30 days postvaccination (T30) for those immunized with Agrippal. Also when data were compared between treatment groups, a clear difference in the response at T30 was observed in favor of Fluad (P = 0.0002). The safety profiles of both vaccines were excellent. For HIV-1-infected individuals, no significant changes either in viremia or in the CD4+ cell count were observed at any time point. The results showed good safety and immunogenicity for both vaccines under study for both uninfected and HIV-1-infected adults, confirming current recommendations for immunization of this high-risk category.
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Affiliation(s)
- P Durando
- Department of Health Sciences, University of Genoa, 16132 Genoa, Italy.
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15
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Ferrera A, Luque B, Lacasa L, Valero E. Self-overlap as a method of analysis in Ising models. Phys Rev E Stat Nonlin Soft Matter Phys 2007; 75:061103. [PMID: 17677216 DOI: 10.1103/physreve.75.061103] [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] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 03/05/2007] [Indexed: 05/16/2023]
Abstract
The damage spreading (DS) method provided a useful tool to obtain analytical results of the thermodynamics and stability of the two-dimensional (2D) Ising model--amongst many others--but it suffered both from ambiguities in its results and from large computational costs. In this paper we propose an alternative method, the so-called self-overlap method, based on the study of correlation functions measured at subsequent time steps as the system evolves towards its equilibrium. Applying Markovian and mean-field approximations to a 2D Ising system we obtain both analytical and numerical results on the thermodynamics that agree with the expected behavior. We also provide some analytical results on the stability of the system. Since only a single replica of the system needs to be studied, this method would seem to be free from the ambiguities that afflicted the DS method. It also seems to be numerically more efficient and analytically simpler.
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Affiliation(s)
- A Ferrera
- Departamento de Matemática Aplicada y Estadística, ETSI Aeronáuticos, Universidad Politécnica de Madrid, E-28040 Madrid, Spain
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16
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Fenoglio D, Puppo F, Cirillo I, Vizzaccaro A, Ferrera A, Tosca MA, Marseglia G, Ciprandi G. Sublingual specific immunotherapy reduces PBMC proliferations. Eur Ann Allergy Clin Immunol 2005; 37:147-51. [PMID: 15916016] [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: 05/02/2023]
Abstract
BACKGROUND Subcutaneous specific immunotherapy has been demonstrated capable of inducing T regulatory response. There is few evidence concerning immunological changes induced by sublingual immunotherapy. OBJECTIVE The aim of this study was to evaluate T cell proliferation in subjects successfully treated with SLIT for HDM. METHODS PBMCs were isolated from patients after at least 3 years of successful HDM SLIT and from matched untreated allergic and healthy control subjects. After 3 and 6 days of in vitro stimulation with PHA, Candida albicans, Dermatophagoides farinae, grasses, Parietaria judaica, and cat, proliferation. RESULTS Subjects treated with SLIT showed significant reduction of proliferation induced by Candida albicans, Parietaria, and grasses in comparison with untreated atopics (p=0.0002, 0.0033, and 0.009 respectively). CONCLUSION This pilot study confirms reduced T cell proliferation in allergic subjects treated with SLIT.
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MESH Headings
- Administration, Sublingual
- Allergens/administration & dosage
- Allergens/immunology
- Allergens/therapeutic use
- Animals
- Antigens, Dermatophagoides/administration & dosage
- Antigens, Dermatophagoides/immunology
- Antigens, Dermatophagoides/therapeutic use
- Candida albicans/immunology
- Cats/immunology
- Dermatophagoides farinae/immunology
- Desensitization, Immunologic
- Female
- Hair/immunology
- Humans
- Leukocytes, Mononuclear/immunology
- Lymphocyte Activation
- Male
- Parietaria/immunology
- Poaceae/immunology
- Pollen/immunology
- Rhinitis, Allergic, Perennial/blood
- Rhinitis, Allergic, Perennial/etiology
- Rhinitis, Allergic, Perennial/immunology
- Rhinitis, Allergic, Perennial/therapy
- Skin Tests
- T-Lymphocyte Subsets/immunology
- Th2 Cells/immunology
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Affiliation(s)
- D Fenoglio
- DIMI-CEBR, Università di Genova, Genoa, Italy
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17
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Schüle C, Baghai T, Ferrera A, Laakmann G. Neuroendocrine effects of Hypericum extract WS 5570 in 12 healthy male volunteers. Pharmacopsychiatry 2001; 34 Suppl 1:S127-33. [PMID: 11518061 DOI: 10.1055/s-2001-15456] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In the present study, the effects of acute p.o. administration of placebo at 300 mg and 600 mg of WS 5570 Hypericum perforatum extract on cortisol (COR), growth hormone (GH) and prolactin (PRL) secretion were examined in twelve physically and mentally healthy subjects. WS 5570 is a hyperforin containing extract of St. John's Wort which has been proven effective in mild to moderate depression. After inserting an i.v. catheter, blood samples were drawn one hour prior to the administration of WS 5570 or placebo, at the time of application and up to five hours after application in 30-minute intervals. Plasma concentrations of COR, GH, and PRL were determined in each blood sample by double-antibody RIA methods. No PRL stimulation could be observed after placebo or after WS 5570 (300, 600 mg). A small but statistically significant elevation in GH AUC values occurred after 300 mg of WS 5570. After 600 mg of WS 5570, a clear-cut COR stimulation was observed, occurring from 30 up to 90 minutes after the application. In this period of time (from t = 30 min to t = 90 min), the mean COR concentrations were significantly higher after 600 mg of WS 5570 compared to placebo. 300 mg of WS 5570 did not show any effects on COR secretion. We propose that the Hypericum extract WS 5570 is able to influence central neurotransmitters, thereby causing COR stimulation in a dose-dependent manner.
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Affiliation(s)
- C Schüle
- Department of Psychiatry, University of Munich, Germany
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Ferrera A, Velema JP, Figueroa M, Bulnes R, Toro LA, Claros JM, de Barahona O, Melchers WJ. Co-factors related to the causal relationship between human papillomavirus and invasive cervical cancer in Honduras. Int J Epidemiol 2000; 29:817-25. [PMID: 11034963 DOI: 10.1093/ije/29.5.817] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [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: 11/13/2022] Open
Abstract
BACKGROUND A case-control study was conducted in Honduras to identify co-factors in the carcinogenic pathway by which human papillomavirus (HPV) causes invasive cervical cancer. METHODS Ninety-nine cases aged 23-65 (median 47) years participated. Two controls were matched to each case by age and clinic where they first presented for cytological screening; controls had no cervical abnormalities. Information on risk factors was obtained by personal interviews in the clinics regarding sociodemographic, reproductive and behavioral characteristics. Human papillomavirus was detected in cervical scrapes by general primer-mediated polymerase chain reaction (PCR) followed by sequence analysis to identify the different types present. RESULTS All cases had squamous cell tumours and most were FIGO (International Federation of Gynecologists and Obstetricians) class II or higher; HPV was strongly associated with cervical cancer (odds ratio [OR] = 7.66, 95% CI : 3.88-15.1). Among HPV-positive women, dose-response relationships were observed for education, age at first intercourse and exposure to wood smoke that persisted after adjustment for previous screening. Among HPV-negative women, the number of sexual partners and parity were associated with cervical cancer. The protective effect of previous cytological screening operated independently of HPV. CONCLUSIONS Our findings speak for the powerful role that both primary and secondary education plays in fostering a lifestyle that reduces the risk of invasive cervical cancer. The data suggest that important elements of such a lifestyle include later age at first sexual intercourse, a limited number of pregnancies, greater likelihood of undergoing cytological screening and reduced exposure to carcinogens in the household environment.
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Affiliation(s)
- A Ferrera
- Department of Microbiology, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras.
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Ferrera A, Velema JP, Figueroa M, Bulnes R, Toro LA, Claros JM, De Barahona O, Melchers WJ. Human papillomavirus infection, cervical dysplasia and invasive cervical cancer in Honduras: a case-control study. Int J Cancer 1999; 82:799-803. [PMID: 10446444 DOI: 10.1002/(sici)1097-0215(19990909)82:6<799::aid-ijc5>3.0.co;2-5] [Citation(s) in RCA: 30] [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: 11/07/2022]
Abstract
A substantial body of evidence has confirmed human papillomavirus (HPV) infection as the central etiological agent in human cervical carcinogenesis. In Honduras, cervical cancer is the most common cancer among women, with a high annual incidence. We conducted a population-based, case-control study of 229 patients with different grades of CIN and invasive cervical cancer and 438 matched controls. A structured questionnaire was used to investigate known and probable risk factors for cervical cancer. Cervical scrapes were tested for the presence of different HPV types using a general primer-mediated PCR followed by PCR-based sequencing. HPV DNA was detected in 87% of all cancer in situ and invasive cancer cases, and 95% of invasive cases could be attributed to high-risk types. In control women, 39% were positive for HPV DNA sequences. HPV 16 prevalence ranked highest in all stages of cervical dysplasias, invasive cancers and controls. A statistically significant association with HPV was observed for CIN II, CIN III and invasive cancer, showing an upward trend to more severe lesions and being more pronounced for HPV 16 and related types. The OR for HPV 16- and 18-related invasive cancer cases was 14.88 (95% CI 5.12-43.25) and 74.66 (95% CI 7.77-717.62), respectively. Our results confirm a central role of HPV as the cause of cervical cancer in Honduras and provide information as to the type distribution of HPVs in the country.
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Affiliation(s)
- A Ferrera
- Department of Microbiology, Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras.
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Ferrera A, Olivo A, Alaez C, Melchers WJ, Gorodezky C. HLA DOA1 and DOB1 loci in Honduran women with cervical dysplasia and invasive cervical carcinoma and their relationship to human papillomavirus infection. Hum Biol 1999; 71:367-79. [PMID: 10380373] [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: 02/12/2023]
Abstract
Molecular and epidemiological studies have demonstrated that certain types of human papillomavirus (HPV), mainly HPV-16 and HPV-18, are the primary causes of cervical cancer and its precursor lesions; there is now evidence for a clear association with specific HLA class I and class II loci contributing independently to the expression of cervical cancer. Among Honduran women carcinoma of the cervix is the most common type of cancer, and infections with high-risk HPV types are highly prevalent. To study the interactive role of viral-host genetics, we performed PCR amplification of DNA and sequence-specific oligonucleotide probe typing on cervical scrapes from 49 women [24 with cervical intraepithelial neoplasia stage III or cervical cancer (severe cases) and 25 with stage I or II cervical intraepithelial neoplasia (mild cases)] and 75 control subjects to look for possible associations between HPV and HLA class II DQA1 and DQB1 alleles in the development of dysplasias and invasive cancer. This analysis revealed a predominance of HLA-DQA1*0301 among severe-case patients [relative risk (RR) = 3.45, p = 0.008), whereas DQA1*0501 was negatively associated (RR = 0.30, p = 0.03), suggesting a protective effect of this allele. HPV typing showed a decreased relative risk among the HPV-16 or HPV-18 carrying patients and other HPV-related positive patients in the presence of DQB1*0602 compared with positive control subjects (p = 0.04). No statistically significant allele frequency difference was observed between mild dysplasia cases and control subjects. The results suggest that DQA1*03011, which is in linkage desequilibrium with all HLA-DR4 alleles, confers an increased risk for severe cervical dysplasia and invasive cancer, whereas DQA1*0501, which is in several DR52 haplotypes, has a protective effect. Furthermore, specific HLA-DQB1 sequences may be important in determining the immune response to HPV peptides and may affect the risk for cervical cancer after HPV infection in mestizo Honduran women.
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Affiliation(s)
- A Ferrera
- Department of Immunogenetics, INDRE, SSA, Mexico City
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Favoni RE, de Cupis A, Bruno S, Yee D, Ferrera A, Pirani P, Costa A, Decensi A. Modulation of the insulin-like growth factor-I system by N-(4-hydroxyphenyl)-retinamide in human breast cancer cell lines. Br J Cancer 1998; 77:2138-47. [PMID: 9649125 PMCID: PMC2150424 DOI: 10.1038/bjc.1998.358] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [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] [Indexed: 02/08/2023] Open
Abstract
The potent mitogenic activity of insulin-like growth factor I (IGF-I) on breast epithelium is inhibited by retinoic acid in oestrogen receptor-positive (ER+) breast cancer cell lines. We studied and compared the effects of N-(4-hydroxyphenyl)-retinamide (4-HPR) in terms of growth inhibition and modulation of the IGF-I system in ER+ (MCF-7) and oestrogen receptor-negative (ER-) (MDA-MB231) breast cancer cell lines. Treatment with 1-10 microM 4-HPR for up to 96 h induced a dose- and time-dependent inhibition of proliferation in both breast cancer cell lines. Induction of apoptosis was much more evident in MCF-7 than in MDA-MB231 cells (30-40% compared with 0-5% respectively at 5 microM for 48 h). Exogenous human recombinant IGF-I (hr-IGF-I)-stimulated cell proliferation was abolished by 1 microM 4-HPR in MCF-7 cells. Immunoreactive IGF-I-like protein concentration in conditioned medium was reduced by 38% in MCF-7 and by 90% in MDA-MB231 cell lines following treatment for 48 h with 5 microM 4-HPR. Western ligand blot analysis showed a reduction of IGF-binding protein 4 (BP4) and BP5 by 67% and 87%, respectively, in MCF-7, whereas IGF-BP4 and -BP1 were reduced by approximately 20% in MDA-MB231 cells. Exposure to 5 microM 4-HPR for 48 h inhibited [125I]IGF-I binding and Scatchard analysis revealed a decrease of more than 50% in maximum binding capacity (Bmax) and a reduced receptor number/cell in both cancer cell lines. Steady-state type I IGF-receptor mRNA levels were reduced by approximately 30% in both tumour cell lines. We conclude that 4-HPR induces a significant down-regulation of the IGF-I system in both ER+ (MCF-7) and ER- (MDA-MB231) breast cancer cell lines. These findings suggest that, in our model, interference with the ER signalling pathway is not the only mechanism of breast cancer growth inhibition by 4-HPR.
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Affiliation(s)
- R E Favoni
- Department of Preclinical Oncology, National Institute for Cancer Research and Advanced Biotechnology Center, Genoa, Italy
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Abstract
To investigate a possible cause-and-effect relationship between sexually transmitted diseases and cervical cancer, we performed a sero-epidemiological study on the presence of antibodies against a number of sexually transmitted agents (STAs) in patients with cervical cancer and their matched controls. In this study, we used serological techniques to investigate the presence of antibodies to cytomegalovirus, herpes simplex virus type 2, human immunodeficiency virus, Chlamydia trachomatis, Treponema pallidum and human papillomavirus (HPV) early protein E7 in sera from patients with cervical cancer, cervical intra-epithelial neoplasia and individually matched, healthy controls. The presence of antibodies to infectious agents other than HPV appeared not to be associated with risk of cervical neoplasia in either univariate or multivariate analysis. After adjustment for cytology, schooling and presence of HPV DNA in cervical scrapes, there was a significantly higher prevalence of antibodies to HPV-16 E7 protein in sera from patients with cervical cancer (OR = 3.6, 95% CI 1.0-12.9) than in healthy controls. The highest antibody prevalence was found among HPV-16 DNA-positive cervical cancer patients (33%). Our results indicate that in these study groups past infections with the STA considered seems to be of no apparent relevance for cervical carcinogenesis and that the HPV-16 anti-E7 response appears to be associated with cervical cancer.
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MESH Headings
- Adult
- Aged
- Antibodies, Bacterial/blood
- Antibodies, Viral/blood
- Case-Control Studies
- Chlamydia trachomatis/immunology
- DNA, Viral/analysis
- Female
- HIV/immunology
- Herpesviridae/immunology
- Honduras/epidemiology
- Humans
- Middle Aged
- Oncogene Proteins, Viral/immunology
- Papillomaviridae/immunology
- Papillomavirus E7 Proteins
- Risk Factors
- Seroepidemiologic Studies
- Sexually Transmitted Diseases, Bacterial/complications
- Sexually Transmitted Diseases, Bacterial/epidemiology
- Sexually Transmitted Diseases, Bacterial/immunology
- Sexually Transmitted Diseases, Viral/complications
- Sexually Transmitted Diseases, Viral/epidemiology
- Sexually Transmitted Diseases, Viral/immunology
- Treponema pallidum/immunology
- Uterine Cervical Neoplasms/epidemiology
- Uterine Cervical Neoplasms/immunology
- Uterine Cervical Neoplasms/microbiology
- Uterine Cervical Neoplasms/virology
- Uterine Cervical Dysplasia/epidemiology
- Uterine Cervical Dysplasia/immunology
- Uterine Cervical Dysplasia/microbiology
- Uterine Cervical Dysplasia/virology
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Affiliation(s)
- A Ferrera
- Department of Microbiology, Universidad Nacional Autonoma de Honduras, Tegucigalpa.
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Abstract
Mycobacterium tuberculosis isolates from 84 patients with pulmonary tuberculosis in Honduras were characterized by restriction fragment length polymorphism analysis. Seventy-three different IS6110 patterns were found; 63 of these were unique and 10 were shared by two to three strains each. Thus, no ongoing spread of any specific clone of bacteria could be demonstrated.
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Affiliation(s)
- L Pineda-Garcia
- Department of Microbiology, Universidad Nacional Autonoma de Honduras, and Instituto Nacional Del Tórax, Tegucigalpa
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Ferrera A, Melchers WJ, Velema JP, Figueroa M. Association of infections with human immunodeficiency virus and human papillomavirus in Honduras. Am J Trop Med Hyg 1997; 57:138-41. [PMID: 9288804 DOI: 10.4269/ajtmh.1997.57.138] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The etiologic role of the oncogenic types of human papillomavirus (HPV) in the development of cervical cancer has been widely proven. Since this cancer occurs more frequently in immunosuppressed individuals, we sought to evaluate the prevalence of HPV infection among human immunodeficiency virus (HIV)-infected and HIV-noninfected prostitutes in Tegucigalpa, Honduras. Cervical scrapes were collected from 23 HIV-seropositive and 28 HIV-seronegative prostitutes for HPV DNA detection by the polymerase chain reaction. Fifty-six percent of the HIV-seropositive women and only 18% of the seronegative women were HPV DNA positive (odds ratio = 6.0). In addition, there was a significant association between seropositivity for HIV with a history of sexually transmitted diseases (P < 0.01). Our data confirm the association between infections with HIV and HPV.
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Affiliation(s)
- A Ferrera
- Departamento de Microbiologia, Universidad Nacional Autonoma de Honduras, Tegucigalpa
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de Cupis A, Ciomei M, Pirani P, Ferrera A, Ardizzoni A, Favoni RE. Anti-insulin-like growth factor-I activity of a novel polysulphonated distamycin A derivative in human lung cancer cell lines. Br J Pharmacol 1997; 120:537-43. [PMID: 9031761 PMCID: PMC1564490 DOI: 10.1038/sj.bjp.0700937] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
1. The purpose of this study was to investigate the antiproliferative effect and the modulation of the mitogenic insulin-like growth factor-I (IGF-I) system by FCE 26644 and FCE 27784, two polyanionic sulphonated distamycin A derivative compounds, on two human non-small cell lung cancer (N-SCLC) cell lines. 2. For cell growth studies the colorimetric MTT and the thymidine incorporation assays were performed; the presence of IGF-I and IGF-binding proteins in conditioned media was revealed by radioimmunoassay and Western ligand blot, respectively. Variations at the IGF-I-receptor level were tested by binding studies on cell monolayers. 3. A significant concentration- and time-dependent cytostatic activity of FCE 26644 (IC50 approximately 200 micrograms ml-1 at 72 h) compared to its analogue FCE 27784 (IC50 > 800 micrograms ml-1) was observed in both cell lines studied. The IGF-I-stimulated proliferation of the IGF-I-responsive A549 cell line was abolished by 24 h of FCE 26644 treatment whereas FCE 27784 was inactive. FCE 26644 increased (4 to 6 fold) the secretion of IGF-I-like material and reduced the IGF-I binding (IC50 > 100 micrograms ml-1) in both A549 and Ca-Lu-1 cell lines. FCE 26644 (100 micrograms ml-1) did not affect the KD (approximately 0.5 nM) but reduced the Bmax and the number of receptor sites (50%). 4. Our findings demonstrate that the ability to down-regulate the cell proliferation of N-SCLC cell lines, shown by FCE 26644, depends at least partially, on interference with the "IGF-I mitogenic system'.
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Affiliation(s)
- A de Cupis
- Department of Preclinical Oncology, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy
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Pineda-Garcia L, Ferrera A, Galvez CA, Hoffner SE. Drug-resistant Mycobacterium tuberculosis and atypical mycobacteria isolated from patients with suspected pulmonary tuberculosis in Honduras. Chest 1997; 111:148-53. [PMID: 8996009 DOI: 10.1378/chest.111.1.148] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Tuberculosis is a major health problem in Central America. In Honduras, with an incidence rate of 81/100,000, it is an increasingly common cause of morbidity and hospitalization. This study was conducted to examine drug-resistant tuberculosis and prevalence of infection with atypical mycobacteria in Honduran patients with suspected pulmonary tuberculosis. METHODS Pulmonary specimens from 235 Honduran patients with suspected tuberculosis were examined by acid-fast smears and culture. The 95 mycobacterial strains isolated were identified to species level and drug susceptibility tests were carried out. Resistant Mycobacterium tuberculosis strains were tested for susceptibility to six additional drugs. Their possible relationship was studied by DNA restriction fragment length polymorphism. RESULTS Drug-resistant strains were found in 13 of 85 culture-verified tuberculosis patients, including 10 with isolates of multidrug-resistant bacteria. Seven of the patients with multidrug-resistant tuberculosis had smear-positive disease. Nine of them had a history of specific therapy. Two patients with drug-resistant disease were shown to be infected by identical strains. Only one of 11 HIV-positive patients had drug-resistant tuberculosis. Most resistant strains were susceptible to ciprofloxacin, amikacin, kanamycin, and pyrazinamide. Atypical mycobacteria were isolated from 10 patients with suspected tuberculosis. Seven of them were receiving antituberculosis chemotherapy and five had smear-positive samples. CONCLUSIONS These results illustrate the importance of mycobacterial culture and subsequent species identification and in vitro susceptibility testing for identification of patients with drug-susceptible or drug-resistant tuberculosis and those infected or colonized with other mycobacteria.
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Affiliation(s)
- L Pineda-Garcia
- Department of Microbiology, Universidad Nacional Autonoma de Honduras, Tegucigalpa, Honduras
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Ferrera A, Chudnovsky EM. Erratum: Quantum nucleation of magnetic bubbles. Phys Rev B Condens Matter 1996; 54:9557. [PMID: 9984699 DOI: 10.1103/physrevb.54.9557] [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: 04/12/2023]
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de Cupis A, Noonan D, Pirani P, Ferrera A, Clerico L, Favoni RE. Comparison between novel steroid-like and conventional nonsteroidal antioestrogens in inhibiting oestradiol- and IGF-I-induced proliferation of human breast cancer-derived cells. Br J Pharmacol 1995; 116:2391-400. [PMID: 8581274 PMCID: PMC1909063 DOI: 10.1111/j.1476-5381.1995.tb15085.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [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: 01/31/2023] Open
Abstract
1. This study has two specific aims: (a) to compare the antioestrogenic activity of two steroidal analogues of 17 beta-oestradiol, the 7 alpha-alkylamide, ICI 164,384 and the 7 alpha-alkylsulphinylamide, ICI 182,780, with that of the triphenylethylene-derived compound 4OH-tamoxifen on a pool of human breast cancer cell lines (HBCCL) with a range of hormonal responsiveness and acquired anti-oestrogen resistance and (b) to investigate the ability of such antioestrogens to modulate the potent breast carcinoma growth-stimulatory activity of the 'IGF-I system'. 2. For the chemosensitivity investigations we used a long-term colorimetric and the short-term thymidine incorporation assay; we analysed IGF-I in conditioned media by a radioimmunoassay, IGF-I mRNA in the cells by RT-PCR and molecular species of IGF-I-binding proteins, secreted in conditioned media, by Western ligand blot. IGF-I receptors were assayed on cell monolayers by binding studies and by Scatchard analysis, we calculated KD, Bmax and sites/cell. 3. Our results indicate that ICI 182,780 and ICI 164,384 are 1.5-5.5 fold more potent than 4OH-tamoxifen in inhibiting the basal proliferation of oestrogen-receptor positive (ER+) breast cancer cell lines. Moreover we demonstrate the capacity of ICI 182,780 and ICI 164,384 to reduce, in a time-dependent fashion, oestrogen- and/or IGF-I-stimulated growth of ER+cell lines, possibly by negatively interfering with an IGF-I-like material secretion and IGF-I-receptor number. 4. Our data provide the first evidence that, on ER+human breast carcinoma cell lines, steroidal antioestrogens inhibit cell growth and modulate the IGF-I mitogenic system. The mechanism of this latter effect has yet to be identified.
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Affiliation(s)
- A de Cupis
- Department of Experimental Pharmacology, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy
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Chudnovsky EM, Ferrera A, Vilenkin A. Quantum depinning of flux lines from columnar defects. Phys Rev B Condens Matter 1995; 51:1181-1184. [PMID: 9978272 DOI: 10.1103/physrevb.51.1181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Melchers W, Ferrera A, Willemse D, Galama J, Walboomers J, De Barahona O, Figueroa M, Snijders P. Human papillomavirus and cervical cancer in Honduran women. Am J Trop Med Hyg 1994; 50:137-42. [PMID: 8116803 DOI: 10.4269/ajtmh.1994.50.137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 01/28/2023] Open
Abstract
In this study, the relationship between human papillomavirus (HPV) infections and cervical cancer in women from Honduras was investigated. Fifteen biopsy samples, obtained from women with cervical cancer or carcinoma in situ, were embedded in paraffin and investigated for the presence of HPV. One 5-microns section was directly processed in lysis buffer and treated with proteinase K. The samples were first screened with an HPV general primer polymerase chain reaction PCR (GP-PCR) assay directed against the highly conserved L1 open reading frame of HPV. The HPV-positive biopsy specimens were rescreened with an HPV 6/11, 16, 18, 31, and 33 type-specific PCR assay. All four carcinoma in situ samples and 10 of 11 carcinomas were found to be positive for HPV. Of the carcinoma in situ samples, two contained HPV 16 DNA, one sample contained HPV 18 DNA, and one sample both HPV 16 and HPV 18 DNA. Of the carcinomas, three specimens contained HPV 16 DNA, two samples contained HPV 18 DNA, two carcinomas were positive for both HPV 16 and 18 DNA, one sample contained HPV 6/11 DNA, and two specimens were HPV positive in the GP-PCR assay but HPV negative in the type-specific PCR assays. This indicated the presence of an HPV type different from HPV 6, 11, 16, 18, 31, or 33. In one carcinoma, no HPV DNA was detected. These data suggest a close association between infection with HPV 16 and HPV 18 and cervical cancer in Honduras.
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Affiliation(s)
- W Melchers
- Department of Medical Microbiology, University of Nijmegen, The Netherlands
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