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Benchekroun G, De Fornel-Thibaud P, Rodríguez Piñeiro M, Rault D, Besso J, Cohen A, Hernandez J, Stambouli F, Gomes E, Garnier F, Begon D, Maurey-Guenec C, Rosenberg D. Ultrasonography Criteria for Differentiating ACTH Dependency from ACTH Independency in 47 Dogs with Hyperadrenocorticism and Equivocal Adrenal Asymmetry. J Vet Intern Med 2010; 24:1077-85. [DOI: 10.1111/j.1939-1676.2010.0559.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Martin N, Guez MAU, Sette LD, Da Silva R, Gomes E. Pectinase production by a Brazilian thermophilic fungus Thermomucor indicae-seudaticae N31 in solid-state and submerged fermentation. Microbiology (Reading) 2010. [DOI: 10.1134/s0026261710030057] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Junghans RP, Rathore R, Ma Q, Davies R, Bais A, Gomes E, Beaudoin E, Boss H, Davol P, Cohen S. Phase I trial of anti-PSMA designer T cells in advanced prostate cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Martin N, Guez MAU, Sette LD, Da Silva R, Gomes E. Pectinase production by a Brazilian thermophilic fungus Thermomucor indicae-seudaticae N31 in solid-state and submerged fermentation. MIKROBIOLOGIIA 2010; 79:321-328. [PMID: 20734812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Thermophilic organisms produce thermostable enzymes, which have a number of applications, justifying the interest in the isolation of new thermophilic strains and study of their enzymes. Thirty-four thermophilic and thermotolerant fungal strains were isolated from soil, organic compost, and an industrial waste pile based on their ability to grow at 45 degrees C and in a liquid medium containing pectin as the only carbon source. Among these fungi, 50% were identified at the genus level as Thermomyces, Aspergillus, Monascus, Chaetomium, Neosartoria, Scopulariopsis, and Thermomucor. All isolated strains produced pectinase during solid-state fermentation (SSF). The highest polygalacturonase (PG) activity was obtained in the culture medium of thermophilic strain N31 identified as Thermomucor indicae-seudaticae. Under SSF conditions on media containing a mixture of wheat bran and orange bagasse (1:1) at 70% of initial moisture, this fungus produced the maximum of 120 U/ml of exo-PG, while in submerged fermentation (SmF) it produced 13.6 U/ml. The crude PG from SmF was more thermostable than that from SSF and exhibited higher stability in acidic pH.
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Ferrarezi A, Egea TC, Filho IZ, Bonilla-Rodriguez G, Da Silva R, Gomes E. Production and preliminary characterization of a thermophilic lipase from Thermomucor indicae-seudaticae N31. N Biotechnol 2009. [DOI: 10.1016/j.nbt.2009.06.361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Carvalho A, Martin N, Da Silva R, Gomes E. Properties of the purified glycosylated alpha-glucosidase produced by thermophilic fungus Thermoascus aurantiacus CBMAI 756 in submerged fermentation. N Biotechnol 2009. [DOI: 10.1016/j.nbt.2009.06.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Junghans RP, Abedi M, Bais A, Gomes E, Ma Q, Beaudoin E, Davol P. Phase I trial of advanced generation anti-CEA designer T cells in gastrointestinal and breast cancers. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15123 Background: We created “designer T cells” by retroviral gene therapy to express chimeric immunoglobulin-T cell receptors (IgTCR) with specificity for carcinoembryonic antigen (CEA). Our previous Phase I trial with 1st generation (1st gen) designer T cells was well tolerated with proof-of-principle “biologic responses”, but of limited duration. Lab correlates showed modified T cells repeatedly kill tumor targets over 4–7 days but then undergo activation-induced cell death (AICD). We created 2nd gen designer T cells that incorporate CD28 co-stimulation into the IgTCR (IgCD28TCR), suppressing AICD and promoting T cell proliferation on tumor contact with superior tumor responses in vivo (Emtage et al. Clin Cancer Res 2008;14:8112). A Phase I clinical trial was approved under FDA BB-IND 10791. Methods: Patient T cells are modified ex vivo, expanded and then administered in a Phase Ia dose escalation, spanning doses of 10^9 to 10^11 cells. Patients are monitored for safety, pharmacokinetics and response. Results: To date, three subjects enrolled with doses prepared and two were treated. T cells were transduced with equal modification of CD4 helper and CD8 cytotoxic T cells and good ex vivo expansions of 30-fold or more. Cells were infused over 15–30 minutes. Blood clearance was rapid. Dosing was without toxicity but also without responses at this lowest T cell dose level. Results will be updated to include new patients at conference time. Conclusions: The safety of 2nd generation designer T cells is supported in two patients at the lowest T cell dose level. Higher planned doses are 10- to 100-fold more T cells, to be observed for toxicity and where responses may begin to be observed. Funding is from the Office of Orphan Products Development of the FDA. No significant financial relationships to disclose.
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Abedi M, Ma Q, Bais A, Gomes E, Beaudoin E, Lu L, Davol P, Cohen SI, Junghans R. Phase I trial of anti-PSMA designer T-cell autografting in prostate cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e16132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e16132 Background: We created chimeric immunoglobulin-T cell receptors (IgTCR) specific for prostate specific membrane antigen (PSMA). When expressed in patient T cells, these “designer T cells” specifically kill prostate cancer cells in vitro and in vivo in animal models, with 5/9 (55%) of xenografted mice experiencing complete remissions (Ma et al. Prostate 2004:61:12–25). A Phase I clinical trial was approved by the FDA in metastatic prostate cancers. Methods: Patient T cells are retrovirally transduced and expanded ex vivo to span dose levels of 10^9 to 10^11 T cells. Adapting methods of Dudley, Rosenberg and colleagues, patients undergo prior non-myeloablative (NMA) conditioning to create a “hematologic space” into which the infused designer T cells will stably engraft for prolonged in vivo efficacy. Patients are co-administered continuous infusion IL2. Outcomes will include Phase Ia goals of safety and toxicity and Phase Ib goals of establishing an optimal biologic dose in terms of designer T cell engraftment and tumor response. Results: For the first two patients, excellent T cell modifications of 50–60% were obtained. After NMA conditioning, T cells were infused and stable engraftments of 1–5% were observed post recovery, even at this lowest 10^9 T cell dose level, thus affirming one of the study end-points. The patients had PSA reductions of 50 and 70% in the two months following treatment. Patients experienced neutropenia and lymphopenia after conditioning, but no designer T cell-related toxicities. Results with additional patients will be described in terms of safety, engraftment efficiency and tumor responses. Conclusions: A new approach to adoptive immune therapy in metastatic prostate cancer has been devised. This clinical trial is funded by the US Army/DOD. No significant financial relationships to disclose.
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Bousquet PJ, Demoly P, Romano A, Aberer W, Bircher A, Blanca M, Brockow K, Pichler W, Torres MJ, Terreehorst I, Arnoux B, Atanaskovic-Markovic M, Barbaud A, Bijl A, Bonadonna P, Burney PG, Caimmi S, Canonica GW, Cernadas J, Dahlen B, Daures JP, Fernandez J, Gomes E, Gueant JL, Kowalski ML, Kvedariene V, Mertes PM, Martins P, Nizankowska-Mogilnicka E, Papadopoulos N, Ponvert C, Pirmohamed M, Ring J, Salapatas M, Sanz ML, Szczeklik A, Van Ganse E, De Weck AL, Zuberbier T, Merk HF, Sachs B, Sidoroff A. Pharmacovigilance of drug allergy and hypersensitivity using the ENDA-DAHD database and the GALEN platform. The Galenda project. Allergy 2009; 64:194-203. [PMID: 19178398 DOI: 10.1111/j.1398-9995.2008.01944.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nonallergic hypersensitivity and allergic reactions are part of the many different types of adverse drug reactions (ADRs). Databases exist for the collection of ADRs. Spontaneous reporting makes up the core data-generating system of pharmacovigilance, but there is a large under-estimation of allergy/hypersensitivity drug reactions. A specific database is therefore required for drug allergy and hypersensitivity using standard operating procedures (SOPs), as the diagnosis of drug allergy/hypersensitivity is difficult and current pharmacovigilance algorithms are insufficient. Although difficult, the diagnosis of drug allergy/hypersensitivity has been standardized by the European Network for Drug Allergy (ENDA) under the aegis of the European Academy of Allergology and Clinical Immunology and SOPs have been published. Based on ENDA and Global Allergy and Asthma European Network (GA(2)LEN, EU Framework Programme 6) SOPs, a Drug Allergy and Hypersensitivity Database (DAHD((R))) has been established under FileMaker((R)) Pro 9. It is already available online in many different languages and can be accessed using a personal login. GA(2)LEN is a European network of 27 partners (16 countries) and 59 collaborating centres (26 countries), which can coordinate and implement the DAHD across Europe. The GA(2)LEN-ENDA-DAHD platform interacting with a pharmacovigilance network appears to be of great interest for the reporting of allergy/hypersensitivity ADRs in conjunction with other pharmacovigilance instruments.
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Benchekroun G, Desmyter A, Hidalgo A, Boulouis HJ, Gomes E, Garnier F, Escoffier L, Poujol L, de Fornel-Thibaud P, Maurey C, Rosenberg D. Primary Hyperparathyroidism and Monoclonal Gammopathy in a Dog. J Vet Intern Med 2009; 23:211-4. [DOI: 10.1111/j.1939-1676.2008.0223.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Tobias-Machado M, Wroclawski E, Juliano R, Starling E, Tavares A, Gomes E, Silva J, Molina W, Wroclawski M, Pedroso E. VID.14: Radical and Staged Simplified Video Endoscopic Inguinal Lymphadenectomy (VEIL): Minimally Invasive Options to Achieved Reduced Morbidity in Penile Carcinoma Lymph Node Management. Urology 2008. [DOI: 10.1016/j.urology.2008.08.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tobias-Machado M, Wrolclawski E, Starling E, Juliano R, Tavares A, Karan A, Neves M, Korkes F, Gomes E, Silva J. MP-6.17: Video-Assisted Urinary Diversion: Minimally-Invasive Approach After Pelvic Radiation Therapy. Urology 2008. [DOI: 10.1016/j.urology.2008.08.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tobias-Machado M, Wroclawski E, Starling E, Juliano R, Tavares A, Ii J, Gomes E, Youssef I, Ferro F, Da Costa L. MP-3.01: Learning Curve Improves Functional and Oncological Outcomes on Pure Laparoscopic Prostatectomy: Experience of a Reference Center in Brazil. Urology 2008. [DOI: 10.1016/j.urology.2008.08.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tobias-Machado M, Wroclawski E, Starling E, Tavares A, Juliano R, Gomes E, Youssef I, Neto O, Bicudo M. VID.13: Laparoscopic Retroperitoneal Lymphadenectomy for Stage I Non-Seminomatous Germ Cell Cancer: Better Results with the Same Template as Open Surgery? Urology 2008. [DOI: 10.1016/j.urology.2008.08.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tobias-Machado M, Starling E, Wrolclawski E, Juliano R, Tavares A, Pertusier L, Pedroso E, Forseto P, Silva J, Gomes E. UP.15: Short- and Long-Term Surgical Outcomes of Laparoscopic Radical Nephrectomy for Kidney Cancer: A Single Center Experience in Brazil. Urology 2008. [DOI: 10.1016/j.urology.2008.08.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Silva O, Barbosa S, Diniz A, Valdeira ML, Gomes E. Plant Extracts Antiviral Activity against Herpes simplex Virus Type 1 and African Swine Fever Virus. ACTA ACUST UNITED AC 2008. [DOI: 10.1076/phbi.35.1.12.13264] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Silva O, Ferreira E, Vaz Pato M, Gomes E. GUINEA-BISSAU'S PLANTS: IN VITRO SUSCEPTIBILITY STUDIES ON NEISSERIA GONORRHOEAE. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/09251619708951276] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bortolatto J, Borducchi E, Rodriguez D, Keller AC, Faquim-Mauro E, Bortoluci KR, Mucida D, Gomes E, Christ A, Schnyder-Candrian S, Schnyder B, Ryffel B, Russo M. Toll-like receptor 4 agonists adsorbed to aluminium hydroxide adjuvant attenuate ovalbumin-specific allergic airway disease: role of MyD88 adaptor molecule and interleukin-12/interferon-gamma axis. Clin Exp Allergy 2008; 38:1668-79. [PMID: 18631348 DOI: 10.1111/j.1365-2222.2008.03036.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Epidemiological and experimental data suggest that bacterial lipopolysaccharides (LPS) can either protect from or exacerbate allergic asthma. Lipopolysaccharides trigger immune responses through toll-like receptor 4 (TLR4) that in turn activates two major signalling pathways via either MyD88 or TRIF adaptor proteins. The LPS is a pro-Type 1 T helper cells (Th1) adjuvant while aluminium hydroxide (alum) is a strong Type 2 T helper cells (Th2) adjuvant, but the effect of the mixing of both adjuvants on the development of lung allergy has not been investigated. OBJECTIVE We determined whether natural (LPS) or synthetic (ER-803022) TLR4 agonists adsorbed onto alum adjuvant affect allergen sensitization and development of airway allergic disease. To dissect LPS-induced molecular pathways, we used TLR4-, MyD88-, TRIF-, or IL-12/IFN-gamma-deficient mice. METHODS Mice were sensitized with subcutaneous injections of ovalbumin (OVA) with or without TLR4 agonists co-adsorbed onto alum and challenged with intranasally with OVA. The development of allergic lung disease was evaluated 24 h after last OVA challenge. RESULTS Sensitization with OVA plus LPS co-adsorbed onto alum impaired in dose-dependent manner OVA-induced Th2-mediated allergic responses such as airway eosinophilia, type-2 cytokines secretion, airway hyper-reactivity, mucus hyper production and serum levels of IgE or IgG1 anaphylactic antibodies. Although the levels of IgG2a, Th1-affiliated isotype increased, investigation into the lung-specific effects revealed that LPS did not induce a Th1 pattern of inflammation. Lipopolysaccharides impaired the development of Th2 immunity, signaling via TLR4 and MyD88 molecules and via the IL-12/IFN-gamma axis, but not through TRIF pathway. Moreover, the synthetic TLR4 agonists that proved to have a less systemic inflammatory response than LPS also protected against allergic asthma development. CONCLUSION Toll-like receptor 4 agonists co-adsorbed with allergen onto alum down-modulate allergic lung disease and prevent the development of polarized T cell-mediated airway inflammation.
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Graminha E, Gonçalves A, Pirota R, Balsalobre M, Da Silva R, Gomes E. Enzyme production by solid-state fermentation: Application to animal nutrition. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.09.029] [Citation(s) in RCA: 133] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Carod-Artal FJ, Venturini M, Gomes E, de Mello MT. [Chronic central nervous system histoplasmosis in an immunocompetent patient]. Neurologia 2008; 23:263-268. [PMID: 18516749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
INTRODUCTION Histoplasma capsulatum is an endemic fungus in America that may present as a lung self-limiting infection or be asymptomatic. Disseminated histoplasmosis can occur in cell-mediated immunity disorders and acquired immunodeficiency syndrome. Isolated central nervous system (CNS) histoplasmosis is uncommon, furthermore in immunocompetent patients. PATIENT A 34 year old inmunocompetent male is reported. He presented with several pathogenic forms of neurohistoplasmosis: chronic meningitis, meningovascular histoplasmosis with stroke, acute myelopathy and chronic recurrent hydrocephalus. Other causes of chronic infectious meningitis were ruled out. Cerebrospinal flow (CSF) analysis showed an increased white cell count, hyperproteinorraquia and decrease of glucose levels. Brain magnetic resonance imaging (MRI) showed hydrocephalus and gadolinium enhancement of the meninges; a spinal cord MRI detected a cervical and thoracic myelopathy. A chronic unspecific inflammatory process and absence of granulomata were observed in a meninge biopsy. Electronic microscopy showed the presence of yeasts in the CSF. Histoplasma capsulatum was isolated in a specific culture from two consecutive CSF samples. The patient was treated with ev amphotericin B and fluconazol, plus 6 months of oral itraconazole. CONCLUSIONS Isolated chronic CNS histoplasmosis may present as recurrent episodes of stroke, meningitis, myelopathy and hydrocephalus. CSF specific culture can help in the diagnosis.
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Alves-Prado HF, Carneiro AAJ, Pavezzi FC, Gomes E, Boscolo M, Franco CML, da Silva R. Production of Cyclodextrins by CGTase from Bacillus clausii Using Different Starches as Substrates. Appl Biochem Biotechnol 2007; 146:3-13. [DOI: 10.1007/s12010-007-8093-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Accepted: 11/01/2007] [Indexed: 10/22/2022]
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Bocchini DA, Gomes E, Da Silva R. Xylanase Production by Bacillus circulans D1 Using Maltose as Carbon Source. Appl Biochem Biotechnol 2007; 146:29-37. [DOI: 10.1007/s12010-007-8051-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Accepted: 09/05/2007] [Indexed: 11/28/2022]
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Campos MRM, Russo M, Gomes E, Almeida SR. Stimulation, inhibition and death of macrophages infected with Trichophyton rubrum. Microbes Infect 2006; 8:372-9. [PMID: 16293438 DOI: 10.1016/j.micinf.2005.07.028] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2005] [Revised: 06/22/2005] [Accepted: 07/01/2005] [Indexed: 10/25/2022]
Abstract
Trichophyton rubrum is the most common pathogen causing dermatophytosis, accounting for approximately 80% of the reported cases of onychomycosis. Since 90% of the chronic dermatophyte infections are caused by T. rubrum, it is likely that this pathogen must have evolved mechanisms that evade or suppress cell-mediated immunity. Several reports have highlighted the participation of phagocytes in the immune defense against fungi; however, few studies have addressed the role of these cells in dermatophytosis. In this study, we investigated the interactions of resident and peritoneal macrophages with T. rubrum. We show here that the interaction of T. rubrum conidia with resident macrophages results in the production of TNF-alpha and IL-10 but not IL-12 and nitric oxide. Infected macrophages down-regulated the expression of co-stimulatory molecules (CD80 and CD54). We also show that phagocytosis of T. rubrum conidia is inhibited by the addition of fungal exoantigens or mannan. Cytotoxicity assays indicated that after 8 h of conidia ingestion macrophage viability decreased drastically. Electron microscopy revealed that the ingested conidia grow and differentiate into hyphae inside macrophages leading to rupture of the macrophage membrane.
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Gomes E, Cardoso MF, Praça F, Gomes L, Mariño E, Demoly P. Self-reported drug allergy in a general adult Portuguese population. Clin Exp Allergy 2005; 34:1597-601. [PMID: 15479276 DOI: 10.1111/j.1365-2222.2004.02070.x] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
AIM To estimate the prevalence of self-reported drug allergy in adults. METHODS Cross-sectional survey of a general adult population from Porto (all of whom were living with children involved in the International Study of Asthma and Allergies in Childhood-phase three), during the year 2002, using a self-administered questionnaire. RESULTS The prevalence of self-reported drug allergy was 7.8% (181/2309): 4.5% to penicillins or other beta-lactams, 1.9% to aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs) and 1.5% to other drugs. In the group 'allergic to beta-lactams', the most frequently implicated drug was penicillin G or V (76.2%) followed by the association of amoxicillin and clavulanic acids (14.3%). In the group 'allergic to NSAIDs', acetylsalicylic acid (18.2%) and ibuprofen (18.2%) were the most frequently identified drugs, followed by nimesulide and meloxicam. Identification of the exact name of the involved drug was possible in less than one-third of the patients, more often within the NSAID group (59.5%). Women were significantly more likely to claim a drug allergy than men (10.2% vs. 5.3%). The most common manifestations were cutaneous (63.5%), followed by cardiovascular symptoms (35.9%). Most of the reactions were immediate, occurring on the first day of treatment (78.5%). Only half of the patients were submitted to drug allergy investigations. The majority (86.8%) completely avoided the suspected culprit drug thereafter. CONCLUSIONS The results showed that self-reported allergy to drugs is highly prevalent and poorly explored. Women seem to be more susceptible. beta-lactams and NSAIDs are the most frequently concerned drugs.
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Gomes E, Araújo R, Soares-Oliveira M, Pereira N. International EMS systems: Portugal. Resuscitation 2004; 62:257-60. [PMID: 15325443 DOI: 10.1016/j.resuscitation.2004.04.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2004] [Accepted: 04/30/2004] [Indexed: 11/19/2022]
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Xavier-Santos S, Carvalho CC, Bonfá M, Silva R, Capelari M, Gomes E. Screening for pectinolytic activity of wood-rotting basidiomycetes and characterization of the enzymes. Folia Microbiol (Praha) 2004; 49:46-52. [PMID: 15114865 DOI: 10.1007/bf02931645] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Seventy-five fungal strains from different groups of basidiomycetes, newly isolated from rotten wood, were screened for pectinolytic activity. Despite the fact that basidiomycetes are scarcely referred to as pectinase producers, the polygalacturonase (PG) activity was detected in 76% of the strains; 16% with activity higher than 40 nkat/g, 40% between 13.3 and 40 nkat/g, and 44% with activity lower than 13.3 nkat/g. The highest productions were obtained among the fungi from order Aphyllophorales, family Polyporaceae. The characterization of the enzymes from the highest PG producers (Lentinus sp., Gloeophyllum striatum, Pycnoporus sanguineus, Schizophyllum commune) showed optimum temperature for catalytic activity at 60-70 degrees C and two peaks of pH optimum (3.5-4.5 and 8.5-9.5). The enzymes exhibited high pH stability (3.0-11.0) but after incubation at 40 degrees C for 1 h their activity dropped by 18-73%.
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Cabrita ARJ, Fonseca AJM, Dewhurst RJ, Gomes E. Nitrogen supplementation of corn silages. 2. Assessing rumen function using fatty acid profiles of bovine milk. J Dairy Sci 2003; 86:4020-32. [PMID: 14740840 DOI: 10.3168/jds.s0022-0302(03)74013-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effects of N supplementation strategies on milk fatty acid profiles of dairy cows and their use as a noninvasive technique to diagnose rumen function, and to guide protein feeding decisions on-farm were evaluated in three experiments. Each experiment was designed according to three 3 x 3 Latin squares with 9 Holstein cows receiving total mixed rations based on corn silage. Experiment 1 was designed to study effects of diets with different ratios of effective rumen-degradable protein (ERDP; g) to fermentable metabolizable energy (FME; j) providing, respectively, a large deficiency, a slight deficiency, and a slight excess in relation to the target level of 11 g of ERDP/MJ FME for lactating cows. Experiment 2 evaluated effects of different proportions of quickly and slowly rumen-degradable protein achieved by replacing soybean meal with urea in the concentrates (0, 0.5, and 1% urea for U0, U5, and U10, respectively). Experiment 3 investigated effects of synchronizing the availability of FME and ERDP in rumen by offering the protein-rich concentrate once or twice per day before the meal (corn silage, ryegrass hay, and energy-rich concentrate), or included in the total mixed ration. Milk fatty acid profiles were significantly affected by dietary N and carbohydrate supply. Principal component factor analysis provided a reasonable description of the data, clearly discriminating between fatty acids that are synthesized by different metabolic pathways. Several sources/pathways were distinguished: de novo synthesis in the mammary gland (short- and medium-chain fatty acids), delta9-desaturase activity (monoenoic fatty acids), direct absorption from the blood stream (long-chain fatty acids), and de novo synthesis by the rumen microbial populations (odd-chain fatty acids). Discriminant canonical analysis showed that milk odd-chain fatty acids had a higher ability to discriminate between diets than even-chain fatty acids. The anteiso C15:0 increased in line with increasing sugar supply, and C17:0 appears to be a marker of protein deficiency. Additionally, iso C17:0 and anteiso C17:0 were associated with the NDF and CP contents of diets. The results suggests that milk odd-chain fatty acids have the potential to be used as a noninvasive technique to assess rumen function in terms of microbial populations, substrates and interactions.
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Cabrita ARJ, Fonseca AJM, Dewhurst RJ, Sampaio CVP, Miranda MFS, Sousa GNS, Miranda IMF, Gomes E. Nitrogen supplementation of corn silages. 1. Effects on feed intake and milk production of dairy cows. J Dairy Sci 2003; 86:4008-19. [PMID: 14740839 DOI: 10.3168/jds.s0022-0302(03)74012-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Feed intake and milk production responses to N supplementation of corn silage-based diets were measured in three 3 x 3 Latin square experiments. In each experiment, 9 Holstein cows received total mixed rations (TMR), based on corn silage. In Exp. 1, midlactation cows were used to study effects of diets with different ratios of effective rumen-degradable protein (ERDP; g) to fermentable metabolizable energy (FME; MJ), providing a large deficiency (RL), a slight deficiency (RM), and a slight excess (RH) in relation to the target level of 11 g of ERDP/MJ of FME, respectively, for lactating cows. Diets were formulated to be isoenergetic, and to satisfy the metabolizable protein requirements. In Exp. 2, early-lactation cows were used to evaluate effects of different proportions of quickly and slowly rumen-degradable protein (RDP), achieved by replacing soybean meal with urea in the concentrates (0, 0.5, and 1% urea). Experiment 3 investigated effects of synchronizing the availability of FME and ERDP in the rumen. Midlactation cows received a diet containing, on a dry matter (DM) basis, 45% corn silage, 5% ryegrass hay, 35% energy-rich concentrate, and 15% protein-rich concentrate (crude protein: 38% of DM; urea: 2% of DM). The protein-rich concentrate was fed either once (D1) or twice (D2) per day before the meal, or included in the TMR (DU). Treatment RL led to lower DM intake and milk yield, but higher milk production efficiency; there were no significant differences between treatments RM and RH. There were no significant treatment effects on DM intake, milk yield, or milk composition in Exp. 2. Manipulating rumen synchrony by altering the timing of feeding affected milk yields, with D1 cows producing significantly less than D2 and DU cows, which were similar. The amount of ERDP in the diet should be matched to the amount of fermentable energy available to maximize intake, milk yields, and the conversion of feed N into milk protein. However, this study showed only small benefits to altering the diurnal pattern of supply of RDP and FME, and only with extreme feeding strategies that would not be used in practice. Urine volume increased in response to increased or unbalanced protein supply. Analysis of the allantoin:creatinine ratio in spot samples of urine was not useful in identifying predicted differences in microbial protein yield from the rumen.
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Beardsley DJS, Tang C, Chen BG, Lamborn C, Gomes E, Srimatkandada V. The disulfide-rich region of platelet glycoprotein (GP) IIIa contains hydrophilic peptide sequences that bind anti-GPIIIa autoantibodies from patients with immune thrombocytopenic purpura (ITP). Biophys Chem 2003; 105:503-15. [PMID: 14499914 DOI: 10.1016/s0301-4622(03)00111-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Immune thrombocytopenic purpura (ITP) is an autoimmune blood disease caused by autoantibody-mediated destruction of blood platelets. Platelet glycoprotein (GP) IIb/IIIa is a common target for antiplatelet autoantibodies. The present studies were undertaken (1). to confirm whether the disulfide rich repeat region of GPIIIa contains target epitopes for antiplatelet antibodies in patients with ITP; (2). to determine whether these antigens were defined by peptide sequences in the absence of post-translational modification; and (3). to correlate observed immunologic reactivity with the recently solved X-ray crystallographic structure of an analogous integrin complex, the vitronectin receptor, alpha(V)beta(3). Recombinant fusion proteins of four GPIIIa extracellular sequences were prepared and purified. Immunoblotting results with purified recombinant peptides showed potent reactivity of 16 of 24 ITP patient serum anti-GPIIb/IIIa antibodies with the fusion protein containing the GPIIIa sequence of residues from 468 to 691. These results are consistent with a report by Kekomaki et al. that a 50 kDa chymotryptic digestion product of GPIIIa isolated from blood platelets contains target epitopes for serum antiplatelet antibodies in 16 of 33 ITP patients. Smaller peptides including residues 446-501 and residues 593-691 each reacted with only 5 of the 24 patient sera; furthermore all but 3 of these interactions were very weak. Visualization of the conformation of the extracellular portion of alpha(V)beta(3) reveals the location of the 222-residue antigenic GPIIIa (beta(3)) peptide 'B' at the immediately extracellular region of the protein that includes a beta-tail domain and several integrin-EGF domains. In summary, predictions of hydrophilicity, surface accessibility and antigenicity and the three dimensional structure of the beta(3) integrin correlate with autoantibody binding to a recombinant GPIIIa peptide 'B' containing residues 468-691.
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Nascimento FRF, Rodríguez D, Gomes E, Fernvik EC, Russo M. A method for multiple sequential analyses of macrophage functions using a small single cell sample. Braz J Med Biol Res 2003; 36:1221-6. [PMID: 12937789 DOI: 10.1590/s0100-879x2003000900012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microbial pathogens such as bacillus Calmette-Guérin (BCG) induce the activation of macrophages. Activated macrophages can be characterized by the increased production of reactive oxygen and nitrogen metabolites, generated via NADPH oxidase and inducible nitric oxide synthase, respectively, and by the increased expression of major histocompatibility complex class II molecules (MHC II). Multiple microassays have been developed to measure these parameters. Usually each assay requires 2-5 x 10(5) cells per well. In some experimental conditions the number of cells is the limiting factor for the phenotypic characterization of macrophages. Here we describe a method whereby this limitation can be circumvented. Using a single 96-well microassay and a very small number of peritoneal cells obtained from C3H/HePas mice, containing as little as <=2 x 10(5) macrophages per well, we determined sequentially the oxidative burst (H2O2), nitric oxide production and MHC II (IAk) expression of BCG-activated macrophages. More specifically, with 100 micro l of cell suspension it was possible to quantify H2O2 release and nitric oxide production after 1 and 48 h, respectively, and IAk expression after 48 h of cell culture. In addition, this microassay is easy to perform, highly reproducible and more economical.
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Iembo T, Da-Silva R, Pagnocca FC, Gomes E. Production, characterization and properties of beta-glucosidase and beta-xylosidase from a strain of Aureobasidium sp. PRIKLADNAIA BIOKHIMIIA I MIKROBIOLOGIIA 2002; 38:639-43. [PMID: 12449792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
beta-glucosidase and beta-xylosidase production by a yeast-like Aureobasidium sp. was carried out during solid-state and submerged fermentation using different carbon sources and crude enzymes were characterized. beta-glucosidase and beta-xylosidase gave optimum activity at pH 2.0-2.5 and 3.0, respectively. These enzymes presented maximal activity at 65 degrees, and were stable in a wide pH range and high temperatures.
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Fontaínhas-Fernandes A, Gomes E, Reis-Henriques M, Coimbra J. Efeito da suplementação da dieta com NaCl no crescimento de tilápia Oreochromis niloticus cultivada em diferentes salinidades. ARQ BRAS MED VET ZOO 2002. [DOI: 10.1590/s0102-09352002000200012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Este estudo foi realizado com o objectivo de testar o efeito de uma dieta suplementada com cloreto de sódio no crescimento de tilápia Oreochromis niloticus cultivada em água doce e em água salobra a 10 e 20‰. Foi fornecida uma dieta suplementada com 8% de NaCl durante o período de aclimatação de três semanas. Após esse período, os peixes foram diretamente transferidos para tanques com água doce e água salobra a 10 e 20‰, para o estudo do crescimento de 180 dias. A suplementação com NaCl aumentou o crescimento dos peixes cultivados em água doce nos primeiros 30 dias (P<0,05), mas não se observaram diferenças significativas entre os outros grupos. No final do ensaio, os peixes cultivados em água salobra a 10‰ apresentaram os melhores resultados de crescimento (P<0,05). Nesse período, os peixes cultivados em 20‰ de salinidade mostraram lesões externas, perda de escamas, desorientação de escamas e inchaço do abdómen.
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de Palma-Fernandez ER, Gomes E, da Silva R. Purification and characterization of two beta-glucosidases from the thermophilic fungus Thermoascus aurantiacus. Folia Microbiol (Praha) 2002; 47:685-90. [PMID: 12630320 DOI: 10.1007/bf02818672] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
beta-Glucosidase from the fungus Thermoascus aurantiacus grown on semi-solid fermentation medium (using ground corncob as substrate) was partially purified in 5 steps--ultrafiltration, ethanol precipitation, gel filtration and 2 anion exchange chromatography runs, and characterized. After the first anion exchange chromatography, beta-glucosidase activity was eluted in 3 peaks (Gl-1, Gl-2, Gl-3). Only the Gl-2 and Gl-3 fractions were adsorbed on the gel matrix. Gl-2 and Gl-3 exhibited optimum pH at 4.5 and 4.0, respectively. The temperature optimum of both glucosidases was at 75-80 degrees C. The pH stability of Gl-2 (4.0-9.0) was higher than Gl-3 (5.5-8.5); both enzyme activities showed similar patterns of thermostability. Under conditions of denaturing gel chromatography the molar mass of Gl-2 and Gl-3 was 175 and 157 kDa, respectively. Using 4-nitrophenyl beta-D-glucopyranoside as substrate, Km values of 1.17 +/- 0.35 and 1.38 +/- 0.86 mmol/L were determined for Gl-2 and Gl-3, respectively. Both enzymes were inhibited by Ag+ and stimulated by Ca2+.
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Duarte R, Gomes E, Cardim N, Ferreira T, Pereira A, Reis RP, Correia JM. A case of anatomically corrected transposition of the great vessels. Rev Port Cardiol 2001; 20:1143-7. [PMID: 11826706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
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Esteban JM, Gomes E, Santamaría JF, Maldonado L. Hyperechoic focal bacterial nephritis: findings on contrast-enhanced Colour Doppler ultrasound. EUROPEAN JOURNAL OF ULTRASOUND : OFFICIAL JOURNAL OF THE EUROPEAN FEDERATION OF SOCIETIES FOR ULTRASOUND IN MEDICINE AND BIOLOGY 2001; 13:201-4. [PMID: 11516631 DOI: 10.1016/s0929-8266(01)00136-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a case of atypical focal bacterial nephritis (lobar nephronia) simulating a renal mass on gray-scale ultrasound, describing the findings on Colour Doppler ultrasound before and after administration of a galactose-based ultrasound contrast agent.
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Russo M, Nahori MA, Lefort J, Gomes E, de Castro Keller A, Rodriguez D, Ribeiro OG, Adriouch S, Gallois V, de Faria AM, Vargaftig BB. Suppression of asthma-like responses in different mouse strains by oral tolerance. Am J Respir Cell Mol Biol 2001; 24:518-26. [PMID: 11350820 DOI: 10.1165/ajrcmb.24.5.4320] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
In this study we examined the effect of oral antigen (Ag) administration on the development of experimental asthma in different mouse strains. We selected BALB/c, BP2, CBA/Ca interleukin (IL)-5 transgenic, and BALB/c T-cell receptor-delta-deficient mouse strains because they exhibit different aspects of the asthma syndrome. Mice exposed to 1% ovalbumin (OVA), dissolved in the drinking water for 5 consecutive days, became unresponsive to subsequent immunogenic OVA challenges. This regimen of OVA administration induced Ag-specific unresponsiveness in all mouse strains tested, including gammadelta-deficient mice that are said to be resistant to tolerance induction. The Ag-specific unresponsiveness was characterized by reduced (almost absent) airway eosinophilic inflammation, airway hyperreactivity, and mucus production; also by low levels of T helper (Th) 2-type cytokines in bronchoalveolar lavage fluid, and decreased immunoglobulin (Ig) G1 and IgE OVA-specific antibody production. The unresponsive state was not associated with increased levels of the suppressive cytokines IL-10 and transforming growth factor (TGF)-beta or with immune deviation toward the Th1 pathway due to increased levels of interferon-gamma and IL-12. Moreover, treatment with anti- TGF-beta antibodies did not abrogate oral tolerance. Oral Ag administration was quite effective in suppressing the development of key features of asthma when initiated after primary immunization (Day 0) or after booster (Day 7), but not after challenge (Day 14) when it increased allergic responses. Collectively, our findings show for the first time the beneficial and detrimental effects of oral Ag administration on the development of experimental asthma.
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MESH Headings
- Administration, Inhalation
- Administration, Oral
- Animals
- Antibodies/blood
- Antigens/administration & dosage
- Antigens/immunology
- Asthma/immunology
- Asthma/metabolism
- Asthma/pathology
- Asthma/therapy
- Bronchial Provocation Tests
- Bronchoalveolar Lavage Fluid/chemistry
- Bronchoalveolar Lavage Fluid/cytology
- Cytokines/metabolism
- Disease Models, Animal
- Drug Administration Schedule
- Immune Tolerance/immunology
- Immunoglobulin E/blood
- Immunoglobulin G/blood
- Immunosuppression Therapy/methods
- Interleukin-5/genetics
- Interleukin-5/metabolism
- Mice
- Mice, Inbred Strains
- Mice, Transgenic
- Mucus/metabolism
- Ovalbumin/administration & dosage
- Ovalbumin/immunology
- Pulmonary Eosinophilia/drug therapy
- Pulmonary Eosinophilia/pathology
- Receptors, Antigen, T-Cell, gamma-delta/deficiency
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Th2 Cells/immunology
- Th2 Cells/metabolism
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Reis RP, Gomes E, Duarte R, Correia MJ, Cândido A, Reis HP, Azinheira J, Pina JE, Correia JM, Luís AS. [Can blood homocysteine explain the family history of vascular diseases?]. Rev Port Cardiol 2001; 20:413-8. [PMID: 11433886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
INTRODUCTION AND AIMS Family history of vascular disease is an important risk factor for vascular disease, independent of conventional risk factors. Homocysteinemia, a newly defined risk factor, is caused by genetics, such as cystathionine beta synthase deficiencies, and metabolic deficiencies. With the present work we intend to study the influence of family history of vascular disease in homocysteinemia. METHODS We studied 204 normal persons (153 males), average age 38.7 +/- 10.9 years, in terms of family history of vascular disease (death due to myocardial infarction or a stroke), conventional risk factors, routine laboratory tests, fasting homocysteinemia and after oral methionine loading (0.1 g/Kg body weight). We compared laboratory results, conventional risk factors and homocysteinemia levels in persons with and without a family history of vascular disease. We performed covariance analysis to evaluate, in a multivariate model, factors that were related to basal or after methionine loading homocysteinemia. RESULTS 35% of persons presented a family history of vascular disease (FHVD). Persons with FHVD presented higher age (45.6 +/- 8.9 versus 35.0 +/- 10.1, p < 0.001), and higher prevalence of hypertension (p = 0.002), dyslipidemia (p = 0.001), obesity (p = 0.03), and physical inactivity (p = 0.03). They presented a tendency, without statistical significance, to have a higher prevalence of diabetes and of hyperhomocysteinemia, and to present higher levels of basal and afterload homocysteinemia. Performing covariance analysis, basal homocysteinemia did not present any relation to FHVD. After methionine load homocysteinemia was strongly influenced by basal homocysteinemia (p = 0.0000), and significantly related to FHVD (p = 0.039). CONCLUSIONS Homocysteinemia cannot explain most of the risk of family history of vascular disease, not explained by conventional risk factors. The only significant relationship between homocysteinemia and FHVD was observed with afterload homocysteinemia in the multivariate model. FHVD is clearly related to conventional risk factors.
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Gomes E, Iembo T, Da Silva R. Production, characterization and properties of polysaccharide depolymerizing enzymes from a strain of Curvularia inaequalis. Folia Microbiol (Praha) 2001; 46:303-8. [PMID: 11830941 DOI: 10.1007/bf02815618] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Xylanase, beta-glucosidase, beta-xylosidase, endoglucanase and polygalacturonase production from Curvularia inaequalis was carried out by means of solid-state and submerged fermentation using different carbon sources. beta-Glucosidase, beta-xylosidase, polygalacturonase and xylanase produced by the microorganisms were characterized. beta-Glucosidase presented optimum activity at pH 5.5 whereas xylanase, polygalacturonase and beta-xylosidase activities were optimal at pH 5.0. Maximal activity of beta-glucosidase was determined at 60 degrees C, beta-xylosidase at 70 degrees C, and polygalacturonase and xylanase at 55 degrees C. These enzymes were stable at acidic to neutral pH and at 40-45 degrees C. The crude enzyme solution was studied for the hydrolysis of agricultural residues.
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Gomes E, Tuna A, Araújo R. Prediction of neurological outcome after cardiac arrest. Crit Care 2001. [PMCID: PMC3333429 DOI: 10.1186/cc1309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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93
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Panserat S, Médale F, Blin C, Brèque J, Vachot C, Plagnes-Juan E, Gomes E, Krishnamoorthy R, Kaushik S. Hepatic glucokinase is induced by dietary carbohydrates in rainbow trout, gilthead seabream, and common carp. Am J Physiol Regul Integr Comp Physiol 2000; 278:R1164-70. [PMID: 10801283 DOI: 10.1152/ajpregu.2000.278.5.r1164] [Citation(s) in RCA: 172] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucokinase (GK) plays a central role in glucose homeostasis in mammals. The absence of an inducible GK has been suggested to explain the poor utilization of dietary carbohydrates in rainbow trout. In this context, we analyzed GK expression in three fish species (rainbow trout, gilthead seabream, and common carp) known to differ in regard to their dietary carbohydrate tolerance. Fish were fed for 10 wk with either a diet containing a high level of digestible starch (>20%) or a diet totally deprived of starch. Our data demonstrate an induction of GK gene expression and GK activity by dietary carbohydrates in all three species. These studies strongly suggest that low dietary carbohydrate utilization in rainbow trout is not due to the absence of inducible hepatic GK as previously suggested. Interestingly, we also observed a significantly lower GK expression in common carp (a glucose-tolerant fish) than in rainbow trout and gilthead seabream, which are generally considered as glucose intolerant. These data suggest that other biochemical mechanisms are implicated in the inability of rainbow trout and gilthead seabream to control blood glucose closely.
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94
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Fonseca A, Cabrita A, Lage A, Gomes E. Evaluation of the chemical composition and the particle size of maize silages produced in north-west of Portugal. Anim Feed Sci Technol 2000. [DOI: 10.1016/s0377-8401(00)00102-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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95
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Varela P, Selores M, Gomes E, Silva E, Matos E, dos Santos L, Amado J, Massa A. Immediate and delayed hypersensitivity to mite antigens in atopic dermatitis. Pediatr Dermatol 1999; 16:1-5. [PMID: 10027989 DOI: 10.1046/j.1525-1470.1999.99001.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Atopic dermatitis (AD) is a common disorder and appears to be on the increase, especially among children. It was thought at first to be a manifestation of immediate hypersensitivity, but it is now known that delayed hypersensitivity also plays an important role. Sensitivity to mite antigens is found in 20% to 60% of patients when immediate hypersensitivity is evaluated by the detection of specific IgE antibodies and prick tests, and in 30% to 50% of patients when delayed hypersensitivity is studied by patch testing. A prospective randomized study was carried out in the pediatric dermatology clinic on a sample of 51 children under 15 years of age. A prevalence of immediate and delayed hypersensitivity to mites, like that described for other populations, was found. It was further found that there was a positive association, not described in the literature, between the younger age groups and delayed hypersensitivity to mite antigens, while the opposite was true for immediate hypersensitivity. We believe that patch tests with airborne allergens, specifically mites, should be part of the protocol for assessing children with AD, particularly in the younger age groups.
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Gomes E, Piko K, Eyk R. International scanning section: CPR. Eur J Emerg Med 1998; 5:273-6. [PMID: 10075486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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97
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Calabrò ML, Sheldon J, Favero A, Simpson GR, Fiore JR, Gomes E, Angarano G, Chieco-Bianchi L, Schulz TF. Seroprevalence of Kaposi's sarcoma-associated herpesvirus/human herpesvirus 8 in several regions of Italy. JOURNAL OF HUMAN VIROLOGY 1998; 1:207-13. [PMID: 10195244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
OBJECTIVE To study the seroprevalence of Kaposi's sarcoma-associated herpesvirus/human herpesvirus type 8 (KSHV/HHV-8) in 779 Italian blood donors. STUDY DESIGN/METHODS Sera were tested for antibodies to a latency-associated nuclear antigen (LANA) and a capsid related protein encoded by ORF65. RESULTS Among all Italian donors, 17.7% and 18.7% had antibodies to LANA and ORF65 protein, respectively, and 24.1% had antibodies to at least one antigen. KSHV/HHV-8 seroprevalence was higher in the Po valley and in Sardinia than close to the sub-Alpine Veneto region, Tuscany, or Apulia. KSHV/HHV-8 seroprevalence was almost equally distributed between men and women but increased in the older age groups. CONCLUSIONS The regional differences and age distribution in seroprevalence agree partially with the incidence of classic KS in Italy. The rarity of classic KS in KSHV/HHV-8-infected subjects and the equal gender distribution of seroprevalence suggest that other cofactors may contribute to KS development in human immunodeficiency virus type 1 (HIV-1)-uninfected individuals.
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Russo M, Jancar S, Pereira de Siqueira AL, Mengel J, Gomes E, Ficker SM, Caetano de Faria AM. Prevention of lung eosinophilic inflammation by oral tolerance. Immunol Lett 1998; 61:15-23. [PMID: 9562371 DOI: 10.1016/s0165-2478(97)00155-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Airway inflammation plays a major role in human asthma. Increasing evidence points to a close correlation between eosinophil infiltration and allergic lung disease. A new murine model of eosinophilic lung inflammation has recently been developed; it consists of immunizing mice with small fragments of solidified hen egg white implanted (EWI) into the subcutaneous tissue. In this model, which is further characterized here, mice challenged with ovalbumin (OVA) present an intense and persistent lung eosinophilia, as well as histopathological findings that resemble human asthma. In the present work, the effect of oral tolerance on the development of allergic lung inflammation in B6 mice immunized with antigen plus adjuvant or with EWI is investigated. It was found that in mice rendered orally tolerant by previous exposure to antigen in the drinking water, the T-helper type 2 cell (Th2)-associated allergic responses in both protocols of immunization were almost completely abolished. The allergic responses were assessed by pulmonary and bone marrow eosinophilia, lung histopathology and antigen-specific IgE and IgG1 production. These findings provide the first indication that Th2-associated lung pathology can be prevented by oral tolerance.
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Dolei A, Biolchini A, Serra C, Curreli S, Gomes E, Dianzani F. Increased replication of T-cell-tropic HIV strains and CXC-chemokine receptor-4 induction in T cells treated with macrophage inflammatory protein (MIP)-1alpha, MIP-1beta and RANTES beta-chemokines. AIDS 1998; 12:183-90. [PMID: 9468367 DOI: 10.1097/00002030-199802000-00008] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE AND DESIGN To study, in T-lymphoid cells, the effects of macrophage inflammatory protein (MIP)-1alpha, MIP-1beta and RANTES beta-chemokines on the replication of T-cell-tropic HIV-1 strains, since it has been reported that beta-chemokines interfere with the replication of macrophage-tropic HIV-1 strains, but not T-cell-tropic strains. METHODS Freshly phytohaemagglutinin (PHA)-activated peripheral blood lymphocytes (PBL) and cultured PHA-activated T cells from healthy volunteers, as well as the C8166 T-cell line, were treated overnight with beta-chemokines before infection with T-cell-tropic HIV-1 isolates, or human T-lymphotropic virus type IIIB. HIV replication was followed by detecting the production of infectious particles, p24 antigen, and viral sequences. CXC-chemokine receptor (CXCR)-4 expression was followed by detection and quantification of specific transcripts. RESULTS Pretreatment of T cells with MIP-1alpha, MIP-1beta and RANTES affected T-cell-tropic strains, increased the replication of HIV-1beta and HIV-1RPdT strains dose-dependently, as well as virus absorption and provirus DNA accumulation. These findings were associated with increased accumulation of CXCR-4 transcripts, and mediated by the protein tyrosine kinase signalling. Moreover, beta-chemokines stimulated PBL proliferation. CONCLUSIONS Beta-chemokines increase the adsorption and replication of at least some T-cell-tropic HIV-1 strains, and this is related to stimulated expression of the CXCR-4 coreceptor.
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Silva O, Duarte A, Pimentel M, Viegas S, Barroso H, Machado J, Pires I, Cabrita J, Gomes E. Antimicrobial activity of Terminalia macroptera root. JOURNAL OF ETHNOPHARMACOLOGY 1997; 57:203-207. [PMID: 9292414 DOI: 10.1016/s0378-8741(97)00068-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Terminalia macroptera Guill et Perr. (Combretaceae) is a medicinal plant used in Guinea-Bissau and other West African countries to treat infectious diseases. The ethanol extract from T. macroptera decorticated root and their liquid-liquid partition fractions, were screened for antimicrobial activity, by the twofold serial microdilution assay against seven reference bacterial strains and against Candida albicans. The extract and fractions showed some activity against at least one of the test microorganisms. The best results were obtained against Shigella dysenteriae and Vibrio cholerae. The minimum inhibitory concentrations (MIC) of T. macroptera ethanol extract were also determined for about 100 clinical strains of Campylobacter sp., Escherichia coli, Salmonella sp., Shigella sp. and Vibrio cholerae. The ethanol extract activity against Campylobacter strains is similar to co-trimoxazole, higher than sulfamethoxazole but lower than tetracycline, erythromycin, ampicillin and streptomycin. Ellagitannins are the major compounds in the extract and active fractions. The obtained results suggest a potential importance of this medicinal plant in the treatment of enteric diseases, particularly in Campylobacter infections.
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