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Bagot M, Muller M, Kim YH, Ortiz-Romero PL, Zinzani PL, Beylot-Barry M, Dalle S, Jacobsen E, Combalia A, Huen A, Mehta-Shah N, Khodadoust MS, Viotti J, Paiva C, Porcu P. Lacutamab in patients with advanced mycosis fungoides according to KIR3DL2 expression: stage 1 results from the TELLOMAK phase 2 trial. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00590-1] [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: 11/16/2022]
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Duarte P, Costa J, Serena C, Almeida C, Gouveia S, Lourenço C, Costa H, Paiva C. Kounis syndrome. Apropos of a clinical case. Rev Bras Ter Intensiva 2020; 32:149-152. [PMID: 32401974 PMCID: PMC7206957 DOI: 10.5935/0103-507x.20200021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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] [Received: 06/16/2019] [Accepted: 08/05/2019] [Indexed: 11/20/2022] Open
Abstract
Kounis syndrome, while an acute coronary syndrome, occurs in the context of a hypersensitivity reaction, allergies, or anaphylaxis and is subdivided into three types: coronary spasm in normal arteries, instability of plaques in atherosclerotic coronary arteries, and thrombosis of coronary stents. Herein, the case of a 73-year-old patient who, after administration of amoxicillin/clavulanic acid, went into cardiorespiratory arrest with evidence of ST-T segment elevation on electrocardiogram is reported. Coronarography revealed no obstructive lesions, and spontaneous resolution of electrocardiographic abnormalities was observed. A review of anamnesis with the family revealed a previous allergy to penicillin. The tryptase dosage was strongly positive. Kounis syndrome type 2 was diagnosed, and the clinical outcome was good.
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Affiliation(s)
- Pedro Duarte
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
- Corresponding author: Pedro Duarte, Hospital do Divino Espírito Santo de Ponta Delgada, Avenida D. Manuel I, 9500-463 - Ponta Delgada, Portugal. E-mail:
| | - Joana Costa
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - Cátia Serena
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - Carla Almeida
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - Sandra Gouveia
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - César Lourenço
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - Humberto Costa
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
| | - Clara Paiva
- Hospital do Divino Espírito Santo de Ponta Delgada - Ponta Delgada, Portugal
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Son MA, Alagkiozidis I, Paiva C, Elfeky A. Robot Assisted Laparoscopic Hysterectomy with Fetus in-situ for Placenta Percreta in Second Trimester. J Minim Invasive Gynecol 2019. [DOI: 10.1016/j.jmig.2019.09.648] [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: 10/25/2022]
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Bagot M, Marie-Cardine A, Ram-Wolff C, Porcu P, Khodadoust M, William B, Thonnart N, Vermeer M, Whittaker S, Duvic M, Bensussan A, Bonnafous C, Sicard H, Paiva C, Battistella M, Kim Y. Immunothérapie ciblée des lymphomes T cutanés par IPH4102, un anticorps monoclonal « first-in-class » dirigé contre la molécule KIR3DL2 : étude de phase I internationale multicentrique. Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.077] [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: 10/27/2022]
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Bagot M, Porcu P, Ram-Wolff C, Khodadoust M, Basem W, Battistella M, Marie-Cardine A, Vermeer M, Mathieu S, Whittaker S, Duvic M, Bensussan A, Paturel C, Bonnafous C, Thonnart N, Widemann A, Bonin C, Sicard H, Paiva C, Pilz K, Kim Y. Phase I Study of IPH4102, Anti-KIR3DL2 Mab, in Relapsed/Refractory Cutaneous T-Cell Lymphomas (CTCL): Dose-escalation Safety, Biomarker and Clinical Activity Results. Hematol Oncol 2017. [DOI: 10.1002/hon.2437_31] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. Bagot
- Dermatology; Hopital St Louis; Paris France
| | - P. Porcu
- Wexner Medical Center; Ohio State University; Columbus USA
| | | | - M. Khodadoust
- Oncology; Stanford University School of Medicine; Stanford USA
| | - W. Basem
- Wexner Medical Center; Ohio State University; Columbus USA
| | | | | | | | - S. Mathieu
- Dermatology; Hopital St Louis; Paris France
| | | | - M. Duvic
- Dermatology; MD Anderson Cancer Center; Houston USA
| | | | | | | | | | | | - C. Bonin
- R&D; Innate Pharma; Marseille France
| | - H. Sicard
- R&D; Innate Pharma; Marseille France
| | - C. Paiva
- R&D; Innate Pharma; Marseille France
| | - K. Pilz
- R&D; Innate Pharma; Marseille France
| | - Y.H. Kim
- Dermatology; Stanford Cancer Institute; Palo Alto USA
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Monteiro A, dos Santos K, Alves R, Moreira P, Paiva C, Amparo F, Magnoni C, Kovacs C. SUN-P010: Lipid Targets and Effect of Nutritional Intervation in Patients with Cardiovascular Risk. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30353-3] [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: 11/28/2022]
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Amparo F, Magnoni D, Gama K, Monteiro A, Moreira P, Paiva C, Alves R, Kovacs C. SUN-P099: Association the Chronic Kidney Disease (CKD) and Changes in Cardiovascular Risk Factors in Patients from Nutrition Service. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30442-3] [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: 11/27/2022]
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Escada‐Rebelo S, Silva AF, Amaral S, Tavares RS, Paiva C, Schlatt S, Ramalho‐Santos J, Mota PC. Spermatogonial stem cell organization in felid testis as revealed by
Dolichos biflorus
lectin. Andrology 2016; 4:1159-1168. [DOI: 10.1111/andr.12223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 04/11/2016] [Accepted: 04/21/2016] [Indexed: 11/29/2022]
Affiliation(s)
- S. Escada‐Rebelo
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
| | - A. F. Silva
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
| | - S. Amaral
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
- Institute for Interdisciplinary Research (IIIUC) University of Coimbra Coimbra Portugal
| | - R. S. Tavares
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
- Institute for Interdisciplinary Research (IIIUC) University of Coimbra Coimbra Portugal
| | - C. Paiva
- Institute for Interdisciplinary Research (IIIUC) University of Coimbra Coimbra Portugal
- PhD Program in Experimental Biology and Biomedicine (PDBEB) Center for Neuroscience and Cell Biology (CNC) University of Coimbra Coimbra Portugal
| | - S. Schlatt
- Centre of Reproductive Medicine and Andrology Institute of Reproductive and Regenerative Biology University of Münster Münster Germany
| | - J. Ramalho‐Santos
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
- Department of Life Sciences University of Coimbra Coimbra Portugal
| | - P. C. Mota
- Biology of Reproduction and Stem Cell Group Center for Neuroscience and Cell Biology (CNC)University of Coimbra Coimbra Portugal
- Institute for Interdisciplinary Research (IIIUC) University of Coimbra Coimbra Portugal
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Paiva C, Godbersen JC, Berger A, Brown JR, Danilov AV. Targeting neddylation induces DNA damage and checkpoint activation and sensitizes chronic lymphocytic leukemia B cells to alkylating agents. Cell Death Dis 2015; 6:e1807. [PMID: 26158513 PMCID: PMC4650717 DOI: 10.1038/cddis.2015.161] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 05/06/2015] [Accepted: 05/12/2015] [Indexed: 02/06/2023]
Abstract
Microenvironment-mediated upregulation of the B-cell receptor (BCR) and nuclear factor-κB (NF-κB) signaling in CLL cells resident in the lymph node and bone marrow promotes apoptosis evasion and clonal expansion. We recently reported that MLN4924 (pevonedistat), an investigational agent that inhibits the NEDD8-activating enzyme (NAE), abrogates stromal-mediated NF-κB pathway activity and CLL cell survival. However, the NAE pathway also assists degradation of multiple other substrates. MLN4924 has been shown to induce DNA damage and cell cycle arrest, but the importance of this mechanism in primary neoplastic B cells has not been studied. Here we mimicked the lymph node microenvironment using CD40 ligand (CD40L)-expressing stroma and interleukin-21 (IL-21) to find that inducing proliferation of the primary CLL cells conferred enhanced sensitivity to NAE inhibition. Treatment of the CD40-stimulated CLL cells with MLN4924 resulted in deregulation of Cdt1, a DNA replication licensing factor, and cell cycle inhibitors p21 and p27. This led to DNA damage, checkpoint activation and G2 arrest. Alkylating agents bendamustine and chlorambucil enhanced MLN4924-mediated DNA damage and apoptosis. These events were more prominent in cells stimulated with IL-21 compared with CD40L alone, indicating that, following NAE inhibition, the culture conditions were able to direct CLL cell fate from an NF-κB inhibition to a Cdt1 induction program. Our data provide insight into the biological consequences of targeting NAE in CLL and serves as further rationale for studying the clinical activity of MLN4924 in CLL, particularly in combination with alkylating agents.
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Affiliation(s)
- C Paiva
- Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
| | - J C Godbersen
- Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - A Berger
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Ltd, Cambridge, MA, USA
| | - J R Brown
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - A V Danilov
- Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
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Paiva C, Amaral A, Rodriguez M, Canyellas N, Correig X, Ballescà JL, Ramalho-Santos J, Oliva R. Identification of endogenous metabolites in human sperm cells using proton nuclear magnetic resonance ((1) H-NMR) spectroscopy and gas chromatography-mass spectrometry (GC-MS). Andrology 2015; 3:496-505. [PMID: 25854681 DOI: 10.1111/andr.12027] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 11/21/2014] [Revised: 01/26/2015] [Accepted: 02/09/2015] [Indexed: 12/15/2022]
Abstract
The objective of this study was to contribute to the first comprehensive metabolomic characterization of the human sperm cell through the application of two untargeted platforms based on proton nuclear magnetic resonance ((1) H-NMR) spectroscopy and gas chromatography coupled to mass spectrometry (GC-MS). Using these two complementary strategies, we were able to identify a total of 69 metabolites, of which 42 were identified using NMR, 27 using GC-MS and 4 by both techniques. The identity of some of these metabolites was further confirmed by two-dimensional (1) H-(1) H homonuclear correlation spectroscopy (COSY) and (1) H-(13) C heteronuclear single-quantum correlation (HSQC) spectroscopy. Most of the metabolites identified are reported here for the first time in mature human spermatozoa. The relationship between the metabolites identified and the previously reported sperm proteome was also explored. Interestingly, overrepresented pathways included not only the metabolism of carbohydrates, but also of lipids and lipoproteins. Of note, a large number of the metabolites identified belonged to the amino acids, peptides and analogues super class. The identification of this initial set of metabolites represents an important first step to further study their function in male gamete physiology and to explore potential reasons for dysfunction in future studies. We also demonstrate that the application of NMR and MS provides complementary results, thus constituting a promising strategy towards the completion of the human sperm cell metabolome.
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Affiliation(s)
- C Paiva
- Faculty of Medicine, Human Genetics Research Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biochemistry and Molecular Genetics Service, Hospital Clinic, Barcelona, Spain.,Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,PhD Program in Experimental Biology and Biomedicine (PDBEB), Center for Neuroscience and Cell Biology, Coimbra, Portugal.,Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - A Amaral
- Faculty of Medicine, Human Genetics Research Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biochemistry and Molecular Genetics Service, Hospital Clinic, Barcelona, Spain.,Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - M Rodriguez
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Institut d'Investigació Sanitària Pere Virgili (IISPV) and Universitat Rovira i Virgili (URV), Tarragona, Spain
| | - N Canyellas
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Institut d'Investigació Sanitària Pere Virgili (IISPV) and Universitat Rovira i Virgili (URV), Tarragona, Spain
| | - X Correig
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Institut d'Investigació Sanitària Pere Virgili (IISPV) and Universitat Rovira i Virgili (URV), Tarragona, Spain
| | - J L Ballescà
- Clinic Institute of Gynaecology, Obstetrics and Neonatology, Hospital Clinic, Barcelona, Spain
| | - J Ramalho-Santos
- Biology of Reproduction and Stem Cell Group, CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - R Oliva
- Faculty of Medicine, Human Genetics Research Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biochemistry and Molecular Genetics Service, Hospital Clinic, Barcelona, Spain
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Esteves LM, Bulhões SM, Branco CC, Mota FM, Paiva C, Cabral R, Vieira ML, Mota-Vieira L. Human leptospirosis: seroreactivity and genetic susceptibility in the population of São Miguel Island (Azores, Portugal). PLoS One 2014; 9:e108534. [PMID: 25255143 PMCID: PMC4177921 DOI: 10.1371/journal.pone.0108534] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [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] [Received: 06/30/2014] [Accepted: 08/21/2014] [Indexed: 01/08/2023] Open
Abstract
Background Leptospirosis is a worldwide zoonotic and recognized neglected infectious disease. It has been observed that only a proportion of individuals exposed to pathogenic species of Leptospira become infected and develop clinically evident disease. Moreover, little information is available in subsequent reinfections. In the present study, we determine if a first infection with leptospirosis protects against subsequent reinfection, and investigate which of the host genetic factors are involved in the susceptibility and resistance to leptospirosis. Methodology and Findings We conducted, in 2011, a retrospective hospital-based case-control study in the São Miguel Island population (Azores archipelago). In order to determine the seropositivity against pathogenic Leptospira after the first episode of leptospirosis, we performed a serological evaluation in 97 unrelated participants diagnosed with leptospirosis between 1992 and 2011. The results revealed that 46.4% of the 97 participants have circulating anti-Leptospira antibodies, and from these participants 35.6% maintained the seroprevalence for the same serogroup. Moreover, three of them were reinfected with unrelated Leptospira serovars. The genetic study was carried out by adding a control group composed of 470 unrelated healthy blood donors, also from São Miguel Island. Twenty five SNPs among twelve innate immune genes – IL1α, IL1β, IL6, IL10, IL12RB1, TLR2, TLR4, TLR9, CD14, CISH, LTA and TNF – were genotyped, as well as HLA class I (–A and –B) genes. Association analysis indicates that genotypes -511GG (OR = 1.6, 95%CI 1.01-2.56, p = 0.04) in IL1β, +1196CG (OR = 2.0, 95%CI 1.26-3.27, p = 0.003) in IL12RB1, -292TA (OR = 1.8, 95% CI 1.06–2.1, p = 0.03) and +3415CG (OR = 1.8, 95% CI 1.08–3.08, p = 0.02), both in CISH confer susceptibility to pathogenic Leptospira. Conclusion The present study suggests some degree of long-term protection against leptospires with an attenuation of symptoms in case of reinfection. Moreover, our data supports the genetic influence of IL1β, IL12RB1 and CISH genes and the susceptibility to leptospirosis infection.
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Affiliation(s)
- Lisa M. Esteves
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
| | - Sara M. Bulhões
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
| | - Claudia C. Branco
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
- Azores Genetics Research Group, Instituto Gulbenkian de Ciência, Oeiras, Portugal
- Centre for Biodiversity, Functional and Integrative Genomics, Faculty of Sciences, University of Lisboa, Lisboa, Portugal
| | - Francisco M. Mota
- Infectious Diseases Department, Hospital of Divino Espirito Santo of Ponta Delgada, São Miguel Island, Azores, Portugal
| | - Clara Paiva
- Internal Medicine Department, Hospital of Divino Espirito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
| | - Rita Cabral
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
- Azores Genetics Research Group, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Maria Luisa Vieira
- Leptospirosis and Lyme Borreliosis Group, Unit of Medical Microbiology, Instituto de Higiene e Medicina Tropical, Centro de Recursos Microbiológicos, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Luisa Mota-Vieira
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada, EPE, São Miguel Island, Azores, Portugal
- Azores Genetics Research Group, Instituto Gulbenkian de Ciência, Oeiras, Portugal
- Centre for Biodiversity, Functional and Integrative Genomics, Faculty of Sciences, University of Lisboa, Lisboa, Portugal
- * E-mail:
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Cordts E, Paiva C, Lechado B, Christofolini D, Barbosa C, Bianco B. MTHFR gene polymorphisms and the correlation with estradiol and AMH serum levels and assisted reproduction outcomes. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.952] [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: 11/25/2022]
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Paiva C, Cordts E, Cavalcaneti V, Christofolini D, Barbosa C, Bianco B. AMH and AMHR2 gene polymorphisms in infertile women and the correlation with the assisted reproduction outcomes. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Macedo S, Bispo GV, Ferreira LA, Cavalcanti TO, Rosa PF, Paiva C, De Melo DR, Rezende LG. Wash your hands: simple measures save lives. Crit Care 2012. [PMCID: PMC3363494 DOI: 10.1186/cc10683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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Chaudhuri N, Paiva C, Donaldson K, Duffin R, Parker LC, Sabroe I. Diesel exhaust particles override natural injury-limiting pathways in the lung. Am J Physiol Lung Cell Mol Physiol 2010; 299:L263-71. [PMID: 20435687 DOI: 10.1152/ajplung.00297.2009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Induction of effective inflammation in the lung in response to environmental and microbial stimuli is dependent on cooperative signaling between leukocytes and lung tissue cells. We explored how these inflammatory networks are modulated by diesel exhaust particles (DEP) using cocultures of human monocytes with epithelial cells. Cocultures, or monoculture controls, were treated with DEP in the presence or absence of LPS or flagellin. Production of cytokines was explored by Western blotting and ELISA; cell signaling was analyzed by Western blotting. Here, we show that responses of epithelial cells to DEP are amplified by the presence of monocytes. DEP amplified the responses of cellular cocultures to very low doses of TLR agonists. In addition, in the presence of DEP, the responses induced by LPS or flagellin were less amenable to antagonism by the physiological IL-1 antagonist, IL-1ra. This was paralleled by the uncoupling of IL-1 production and release from monocytes, potentially attributable to an ability of DEP to sequester or degrade extracellular ATP. These data describe a model of inflammation where DEP amplifies responses to low concentrations of microbial agonists and alters the nature of the inflammatory milieu induced by TLR agonists.
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Gonçalves AT, Paiva C, Melo-Mota F, Vieira ML, Carreira T, Nunes MS, Mota-Vieira L, Ahmed A, Harstkeerl RA, Hyde K, Collares-Pereira M. First isolation of human Leptospira strains, Azores, Portugal. Int J Infect Dis 2010; 14 Suppl 3:e148-53. [PMID: 20413339 DOI: 10.1016/j.ijid.2009.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Revised: 10/22/2009] [Accepted: 12/04/2009] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES The aim of this study was the first identification of Leptospira isolates from Azorean inpatients. METHODS Whole blood samples from 68 inpatients attending the São Miguel Hospital between 2006 and 2008, with a clinical and epidemiological suspicion of leptospirosis, were inoculated in a transport medium broth at the patient's bedside and further processed using a serial dilution technique prior to culture. At admission, 62 (91%) patients were also analyzed for the presence of leptospiral DNA by a nested PCR and 40 (59%) for specific agglutinins by microscopic agglutination test (MAT). The isolates obtained were first assigned at the serogroup level by both MAT reactivity with hyperimmune rabbit antisera and a PCR-based assay with the single primer iRep1. The species identification was performed by DNA sequencing. The use of monoclonal antibodies allowed intraspecific discrimination at the serovar level. RESULTS Of the 10 (14.7%) human Leptospira isolates, seven were identified as Leptospira interrogans serovar Copenhageni and three as Leptospira borgpetersenii serovar Arborea, which is in agreement with previous data from the Azorean rodent population. CONCLUSIONS This study represents a great step towards the definitive identification of the pathogenic leptospires in Azorean patients and confirms the bacteriological human-rodent connection for the first time.
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Affiliation(s)
- Ana T Gonçalves
- Unidade de Leptospirose e Borreliose de Lyme, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Rua da Junqueira 100, Lisbon, Portugal
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Monteiro MS, Lopes T, Mann RM, Paiva C, Soares AMVM, Santos C. Microsatellite instability in Lactuca sativa chronically exposed to cadmium. Mutat Res 2009; 672:90-4. [PMID: 19041419 DOI: 10.1016/j.mrgentox.2008.10.012] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 09/25/2008] [Accepted: 10/08/2008] [Indexed: 10/21/2022]
Abstract
Cadmium (Cd) is a cytotoxic, mutagenic and carcinogenic metal. Mutagenesis is indicative of genetic instability and can be assayed by use of microsatellite markers (simple sequence repeats, SSRs). These are tandem-repeated tracts of DNA composed of units that are 1-6 base pairs (bp) long, spread throughout the genome and highly polymorphic. SSRs can be used in the detection of genomic DNA damage and/or mutational events (e.g. deletions, insertions, point mutations). In order to study chronic exposure to cadmium, Lactuca sativa L. seeds were germinated in distilled water and grown on modified Hoagland's medium, both supplemented with 0, 10 and 100microM Cd(NO(3))(2). After 28 days of exposure, the plants were harvested to assess shoot and root length and accumulation of cadmium. DNA was extracted from young and expanded leaves and roots in order to analyse microsatellite instability (MSI). Mutagenic effects of cadmium were evaluated on nine microsatellite loci. No MSI was found in leaves, but a 2-bp deletion in one lettuce root SSR was detected among the SSRs that were analysed. Thus, SSR analyses may provide a complementary tool in the assessment of different genotoxic effects of compounds on plants.
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Affiliation(s)
- M S Monteiro
- CESAM & Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
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Leal A, Paiva C, Höfer S, Amado J, Gomes L, Oldridge N. Evaluative and Discriminative Properties of the Portuguese MacNew Heart Disease Health-related Quality of Life Questionnaire. Qual Life Res 2005; 14:2335-41. [PMID: 16328913 DOI: 10.1007/s11136-005-7213-x] [Citation(s) in RCA: 20] [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] [Accepted: 05/10/2005] [Indexed: 01/22/2023]
Abstract
The aim of this study was to validate the Portuguese version of the self-administered MacNew Heart Disease Health-related Quality of Life (MacNew) questionnaire in patients after diagnosis of acute coronary syndrome. The MacNew, with a Global score and physical, emotional and social subscales, the Short Form SF-36 (SF-36) and the Hospital Anxiety and Depression Scale (HADS) were completed at baseline by 150 patients and again by 48 clinically stable patients 2-3 weeks later. A cohort of 50 different patients completed the same questionnaires before and after a cardiac rehabilitation program in order to examine responsiveness. Acceptance of the MacNew by the patients was good and the three factor model was substantiated and explained 52.2% of the variance. Internal consistency, intra-class-correlation, and test-retest reliability each exceeded 0.72. The predicted construct validity hypotheses were partially confirmed. The discriminative validity of the MacNew was confirmed with significantly higher MacNew scores for patients with normal left ventricular function, with improved health status, and who were not anxious or depressed. Even though MacNew scores improved significantly following cardiac rehabilitation, the evaluative validity of the MacNew was less robust with small responsiveness statistics. The Portuguese version of the MacNew HRQL questionnaire appears to be a reliable, valid, and moderately responsive instrument to evaluate health-related quality of life after diagnosis of acute coronary syndrome.
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Affiliation(s)
- A Leal
- Cardiac Rehabilitation Unit, Hospital Sto António Porto, Largo Prof Abel Salazar 400, Portugal.
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19
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Braga LL, Gomes ML, Silva MW, Paiva C, Sales A, Mann BJ. Entamoeba histolytica and Entamoeba dispar infections as detected by monoclonal antibody in an urban slum in Fortaleza, Northeastern Brazil. Rev Soc Bras Med Trop 2001; 34:467-71. [PMID: 11600913 DOI: 10.1590/s0037-86822001000500010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this study the authors used the Elisa-based antigen detection tests that distinguish E. histolytica from E. dispar to examine the prevalence of E. histolytica infection in individuals from an urban slum in Fortaleza, Northeastern, Brazil. This test has a sensitivity and specificity that is comparable to PCR and isoenzyme analysis, which is the gold standard. Single stools samples were obtained from 735 individuals. The prevalence of E. histolytica infection was 14.9% (110/735) and 25.4%(187/735) for E. dispar-E. histolytica complex. The most affected age group for E. histolytica /E. histolytica-E. dispar infection was the 1-5 year olds but there was no remarkable decrease with age. There was no significant difference in colonization rates between males and females. The results from this survey demonstrate that E. histolytica is highly prevalent in the Community studied. Furthermore, it offers promise for the antigen detection test as a sensitive and technically simple tool for detecting E. histolytica infection in the field.
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Affiliation(s)
- L L Braga
- Federal University of Ceará, Fortaleza, Brazil.
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20
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Paiva C, Mouro AM, Luís ML, Fonseca F, Quina M. [Myopathy caused by hypothyroidism]. ACTA MEDICA PORT 1991; 4:305-7. [PMID: 1807095] [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: 12/28/2022]
Abstract
The authors report a case of primary hypothyroidism where the main symptoms were caused by muscular lesions and disappeared after treatment with L-thyroxine. Based on this case study the authors then review both the clinical aspects and the diagnostical methods of hypothyroidism myopathy, noting its frequency, be it in terms of isolated laboratory changes or in terms of functional changes.
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Affiliation(s)
- C Paiva
- Serviço de Medicina III. H. Pulido Valente, Serviço de Neurologia do H. Sta. Maria, Lisboa
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Paiva C. [Goldenhar's syndrome (oculo-auriculo-vertebral dysplasia). Apropos of a case]. Rev Bras Oftalmol 1971; 30:139-45. [PMID: 5562461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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