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Assoni AF, Guerrero EN, Wardenaar R, Oliveira D, Bakker PL, Alves LM, Carvalho VM, Okamoto OK, Zatz M, Foijer F. IFNγ protects motor neurons from oxidative stress via enhanced global protein synthesis in FUS-associated amyotrophic lateral sclerosis. Brain Pathol 2024; 34:e13206. [PMID: 37582053 PMCID: PMC10711262 DOI: 10.1111/bpa.13206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 01/05/2023] [Accepted: 07/12/2023] [Indexed: 08/17/2023] Open
Abstract
Amyotrophic lateral sclerosis type 6 (ALS6) is a familial subtype of ALS linked to Fused in Sarcoma (FUS) gene mutation. FUS mutations lead to decreased global protein synthesis, but the mechanism that drives this has not been established. Here, we used ALS6 patient-derived induced pluripotent stem cells (hIPSCs) to study the effect of the ALS6 FUSR521H mutation on the translation machinery in motor neurons (MNs). We find, in agreement with findings of others, that protein synthesis is decreased in FUSR521H MNs. Furthermore, FUSR521H MNs are more sensitive to oxidative stress and display reduced expression of TGF-β and mTORC gene pathways when stressed. Finally, we show that IFNγ treatment reduces apoptosis of FUSR521H MNs exposed to oxidative stress and partially restores the translation rates in FUSR521H MNs. Overall, these findings suggest that a functional IFNγ response is important for FUS-mediated protein synthesis, possibly by FUS nuclear translocation in ALS6.
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Affiliation(s)
- Amanda Faria Assoni
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Erika N. Guerrero
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
- Department of Stem Cell ResearchGorgas Memorial Institute for Health StudiesPanama CityRepublic of Panama
| | - René Wardenaar
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
| | - Danyllo Oliveira
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Petra L. Bakker
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
| | - Luciana M. Alves
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | | | | | - Mayana Zatz
- Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil
| | - Floris Foijer
- European Research Institute for the Biology of Ageing (ERIBA)University of Groningen, University Medical Center GroningenGroningenThe Netherlands
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Macedo TA, Giampá SQC, Furlan SF, Freitas LS, Lebkuchen A, Cardozo KHM, Carvalho VM, Martins FC, Mendonça T, Bortolotto LA, Lorenzi-Filho G, Drager LF. Effect of continuous positive airway pressure on atrial remodeling and diastolic dysfunction of patients with obstructive sleep apnea and metabolic syndrome: a randomized study. Obesity (Silver Spring) 2023; 31:934-944. [PMID: 36855025 DOI: 10.1002/oby.23699] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 12/08/2022] [Accepted: 12/15/2022] [Indexed: 03/02/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the role of obstructive sleep apnea (OSA) treatment on heart remodeling and diastolic dysfunction in patients with metabolic syndrome (MS). METHODS This study is a prespecified analysis of a randomized placebo-controlled trial that enrolled patients with a recent diagnosis of MS and moderate-to-severe OSA to undergo continuous positive airway pressure (CPAP) or nasal dilators (placebo) for 6 months. Patients were invited to perform a transthoracic echocardiogram by a single investigator blinded to treatment assignment. RESULTS A total of 99 (79% men; mean [SD], age: 48 [9] years; BMI: 33 [4] kg/m2 ) completed the study. At follow-up, in the placebo group, patients had a significant increase in atrial diameter: from 39.5 (37.0-43.0) mm to 40.5 (39.0-44.8) mm (p = 0.003). CPAP prevented atrial enlargement: from 40.0 (38.0-44.0) to 40.0 (39.0-45.0) mm (p = 0.194). In patients with diastolic dysfunction at baseline, almost half had diastolic dysfunction reversibility with CPAP (in comparison with only two patients in the placebo group, p = 0.039). In the regression analysis, the chance of diastolic dysfunction reversibility by CPAP was 6.8-fold (95% CI: 1.48-50.26, p = 0.025) compared with placebo. CONCLUSIONS In patients with MS and OSA, 6 months of CPAP therapy prevented atrial remodeling and increased the chance of diastolic dysfunction reversibility.
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Affiliation(s)
- Thiago Andrade Macedo
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Sara Q C Giampá
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Sofia F Furlan
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Lunara S Freitas
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | | | | | | | - Franco C Martins
- Laboratório do Sono, Divisão de Pneumologia, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Tiago Mendonça
- Insper Instituto de Ensino e Pesquisa, São Paulo, Brazil
| | - Luiz A Bortolotto
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Geraldo Lorenzi-Filho
- Laboratório do Sono, Divisão de Pneumologia, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Luciano F Drager
- Unidade de Hipertensão, Instituto do Coração (InCor), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
- Unidade de Hipertensão, Disciplina de Nefrologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Venturini G, Alvim JM, Padilha K, Toepfer CN, Gorham JM, Wasson LK, Biagi D, Schenkman S, Carvalho VM, Salgueiro JS, Cardozo KHM, Krieger JE, Pereira AC, Seidman JG, Seidman CE. Cardiomyocyte infection by Trypanosoma cruzi promotes innate immune response and glycolysis activation. Front Cell Infect Microbiol 2023; 13:1098457. [PMID: 36814444 PMCID: PMC9940271 DOI: 10.3389/fcimb.2023.1098457] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/16/2023] [Indexed: 02/08/2023] Open
Abstract
Introduction Chagas cardiomyopathy, a disease caused by Trypanosoma cruzi (T. cruzi) infection, is a major contributor to heart failure in Latin America. There are significant gaps in our understanding of the mechanism for infection of human cardiomyocytes, the pathways activated during the acute phase of the disease, and the molecular changes that lead to the progression of cardiomyopathy. Methods To investigate the effects of T. cruzi on human cardiomyocytes during infection, we infected induced pluripotent stem cell-derived cardiomyocytes (iPSC-CM) with the parasite and analyzed cellular, molecular, and metabolic responses at 3 hours, 24 hours, and 48 hours post infection (hpi) using transcriptomics (RNAseq), proteomics (LC-MS), and metabolomics (GC-MS and Seahorse) analyses. Results Analyses of multiomic data revealed that cardiomyocyte infection caused a rapid increase in genes and proteins related to activation innate and adaptive immune systems and pathways, including alpha and gamma interferons, HIF-1α signaling, and glycolysis. These responses resemble prototypic responses observed in pathogen-activated immune cells. Infection also caused an activation of glycolysis that was dependent on HIF-1α signaling. Using gene editing and pharmacological inhibitors, we found that T. cruzi uptake was mediated in part by the glucose-facilitated transporter GLUT4 and that the attenuation of glycolysis, HIF-1α activation, or GLUT4 expression decreased T. cruzi infection. In contrast, pre-activation of pro-inflammatory immune responses with LPS resulted in increased infection rates. Conclusion These findings suggest that T. cruzi exploits a HIF-1α-dependent, cardiomyocyte-intrinsic stress-response activation of glycolysis to promote intracellular infection and replication. These chronic immuno-metabolic responses by cardiomyocytes promote dysfunction, cell death, and the emergence of cardiomyopathy.
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Affiliation(s)
- Gabriela Venturini
- Department of Genetics, Harvard Medical School, Boston, MA, United States,Laboratory of Genetics and Molecular Cardiology, University of São Paulo Medical School, São Paulo, Brazil
| | - Juliana M. Alvim
- Laboratory of Genetics and Molecular Cardiology, University of São Paulo Medical School, São Paulo, Brazil
| | - Kallyandra Padilha
- Laboratory of Genetics and Molecular Cardiology, University of São Paulo Medical School, São Paulo, Brazil
| | - Christopher N. Toepfer
- Department of Genetics, Harvard Medical School, Boston, MA, United States,Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom,Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Joshua M. Gorham
- Department of Genetics, Harvard Medical School, Boston, MA, United States
| | - Lauren K. Wasson
- Department of Genetics, Harvard Medical School, Boston, MA, United States
| | | | - Sergio Schenkman
- Department of Microbiology, Immunology and Parasitology, Escola Paulista de Medicina, São Paulo, Brazil
| | | | | | | | - Jose E. Krieger
- Laboratory of Genetics and Molecular Cardiology, University of São Paulo Medical School, São Paulo, Brazil
| | - Alexandre C. Pereira
- Department of Genetics, Harvard Medical School, Boston, MA, United States,Laboratory of Genetics and Molecular Cardiology, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Christine E. Seidman
- Department of Genetics, Harvard Medical School, Boston, MA, United States,Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, United States,Howard Hughes Medical Institute, Chevy Chase, MD, United States,*Correspondence: Christine E. Seidman,
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Mehta S, Carvalho VM, Rajczewski AT, Pible O, Grüning BA, Johnson JE, Wagner R, Armengaud J, Griffin TJ, Jagtap PD. Catching the Wave: Detecting Strain-Specific SARS-CoV-2 Peptides in Clinical Samples Collected during Infection Waves from Diverse Geographical Locations. Viruses 2022; 14:2205. [PMID: 36298760 PMCID: PMC9609567 DOI: 10.3390/v14102205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 10/04/2022] [Accepted: 10/05/2022] [Indexed: 11/05/2022] Open
Abstract
The Coronavirus disease 2019 (COVID-19) pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) resulted in a major health crisis worldwide with its continuously emerging new strains, resulting in new viral variants that drive "waves" of infection. PCR or antigen detection assays have been routinely used to detect clinical infections; however, the emergence of these newer strains has presented challenges in detection. One of the alternatives has been to detect and characterize variant-specific peptide sequences from viral proteins using mass spectrometry (MS)-based methods. MS methods can potentially help in both diagnostics and vaccine development by understanding the dynamic changes in the viral proteome associated with specific strains and infection waves. In this study, we developed an accessible, flexible, and shareable bioinformatics workflow that was implemented in the Galaxy Platform to detect variant-specific peptide sequences from MS data derived from the clinical samples. We demonstrated the utility of the workflow by characterizing published clinical data from across the world during various pandemic waves. Our analysis identified six SARS-CoV-2 variant-specific peptides suitable for confident detection by MS in commonly collected clinical samples.
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Affiliation(s)
- Subina Mehta
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | | | - Andrew T. Rajczewski
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Olivier Pible
- Département Médicaments et Technologies pour la Santé (DMTS), Université Paris-Saclay, CEA, INRAE, 30200 Bagnols-sur-Cèze, France
| | - Björn A. Grüning
- Department of Computer Science, University of Freiburg, 79110 Freiburg, Germany
| | - James E. Johnson
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Reid Wagner
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jean Armengaud
- Département Médicaments et Technologies pour la Santé (DMTS), Université Paris-Saclay, CEA, INRAE, 30200 Bagnols-sur-Cèze, France
| | - Timothy J. Griffin
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Pratik D. Jagtap
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
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Carvalho VM, Filho AAC, Braga FHP, Lima SCS, Pombo-De MDS. VARIANTES CRHR1RS242942 E NR3C1RS41423247 ESTÃO POSITIVAMENTE ASSOCIADAS AO RISCO DE LEUCEMIA LINFOBLÁSTICA AGUDA NO BRASIL. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.599] [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: 11/07/2022] Open
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Lima DA, Schuch RA, Salgueiro JS, Pintão MCT, Carvalho VM. Evaluation of Volumetric Absorptive Microsampling and Mass Spectrometry Data-Independent Acquisition of Hemoglobin-Related Clinical Markers. J Proteome Res 2022; 21:1816-1828. [PMID: 35770882 DOI: 10.1021/acs.jproteome.1c00892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Data-independent acquisition (DIA) allows comprehensive proteome coverage, while it also potentially works as a unified protocol to determine a multitude of proteins found in blood. Because of its high specificity, mass spectrometry may greatly reduce the interference observed in other assays to evaluate blood markers. Here, we combined DIA with volumetric absorptive microsampling (VAMS) and automated proteomics sample processing in a platform to assess clinical markers. As a proof of concept, we evaluated two hemoglobin-related biomarkers: the glycated hemoglobin (HbA1c) and hemoglobin (Hb) variants. HbA1c by DIA showed good correlation with the reference method, but method imprecision did not meet the quality requirement for this biomarker. We developed a strategy to identify Hb variants based on a customized database combined with a workflow for DIA data extraction and rigorous peptide evaluation. Data are available via ProteomeXchange with identifier PXD029918.
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Affiliation(s)
- Debora A Lima
- Chromatography Division, Fleury Group, 04344-070 São Paulo, São Paulo, Brazil.,Research and Development Division, Fleury Group, 04344-070 São Paulo, São Paulo, Brazil
| | - Rodrigo A Schuch
- Research and Development Division, Fleury Group, 04344-070 São Paulo, São Paulo, Brazil
| | - Jéssica S Salgueiro
- Chromatography Division, Fleury Group, 04344-070 São Paulo, São Paulo, Brazil
| | | | - Valdemir M Carvalho
- Research and Development Division, Fleury Group, 04344-070 São Paulo, São Paulo, Brazil.,Graduate Program in Pathophysiology and Toxicology, School of Pharmaceutical Sciences, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
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Giampá SQC, Furlan SF, Freitas LS, Macedo TA, Lebkuchen A, Cardozo KHM, Carvalho VM, Martins FC, Azam IFB, Costa-Hong V, Lopes HF, Baptista ML, Rochitte CE, Bortolotto LA, Lorenzi-Filho G, Drager LF. Effects of CPAP on Metabolic Syndrome in Patients With OSA: A Randomized Trial. Chest 2022; 161:1370-1381. [PMID: 35063452 DOI: 10.1016/j.chest.2021.12.669] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 12/03/2021] [Accepted: 12/08/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND OSA is associated with metabolic syndrome (MS), but it is unclear whether OSA treatment with CPAP can revert MS. RESEARCH QUESTION Does OSA treatment with CPAP per se have effects on the MS reversibility and the associated metabolic, adiposity and vascular parameters? STUDY DESIGN AND METHODS The TREATOSA-MS trial is a randomized placebo-controlled trial that enrolled adult patients with a recent diagnosis of MS and moderate or severe OSA (apnea-hypopnea index [AHI], ≥ 15 events/h) to undergo therapeutic CPAP or nasal dilator strips (placebo group) for 6 months. Before and after each intervention, we measured anthropometric variables, BP, glucose, and lipid profile. To control potential-related mechanisms and consequences, we also measured adiposity biomarkers (leptin and adiponectin), body composition, food intake, physical activity, subcutaneous and abdominal fat (visceral and hepatic fat), and endothelial function. RESULTS One hundred patients (79% men; mean age, 48 ± 9 years; BMI, 33 ± 4 kg/m2; AHI, 58 ± 29 events/h) completed the study (n = 50 per group). The mean CPAP adherence was 5.5 ± 1.5 h/night. After 6 months, most patients with OSA randomized to CPAP retained the MS diagnosis, but the rate of MS reversibility was higher than observed in the placebo group (18% vs 4%; OR, 5.27; 95% CI, 1.27-35.86; P = .04). In the secondary analysis, CPAP did not promote significant reductions in the individual components of MS, weight, hepatic steatosis, lipid profile, adiponectin, and leptin, but did promote a very modest reduction in visceral fat and improved endothelial function (all analyses were adjusted for baseline values). INTERPRETATION Despite the higher rate of MS reversibility after CPAP therapy as compared with placebo, most patients retained this diagnosis. The lack of significant or relevant effects on adiposity biomarkers and depots supports the modest role of OSA in modulating MS. TRIAL REGISTRATION ClinicalTrials.gov; No.: NCT02295202; URL: www. CLINICALTRIALS gov.
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Affiliation(s)
- Sara Q C Giampá
- Programa de Pós-Graduação em Cardiologia da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Sofia F Furlan
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Lunara S Freitas
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Thiago A Macedo
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | | | | | | | - Franco C Martins
- Laboratorio de Sono, Divisao de Pneumologia, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Indira F B Azam
- Unidade de Hipertensao, Disciplina de Nefrologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Valéria Costa-Hong
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Heno F Lopes
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Mariana L Baptista
- Cardiovascular Magnetic Resonance and Computed Tomography Sector, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Carlos E Rochitte
- Cardiovascular Magnetic Resonance and Computed Tomography Sector, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Luiz A Bortolotto
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Geraldo Lorenzi-Filho
- Laboratorio de Sono, Divisao de Pneumologia, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Luciano F Drager
- Unidade de Hipertensao, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil; Unidade de Hipertensao, Disciplina de Nefrologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
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Camargo M, Ibrahim E, Aballa TC, Cardozo KHM, Carvalho VM, Lynne CM, Brackett NL, Bertolla RP. Proteomic insight of seminal plasma in spinal cord injured men submitted to oral probenecid treatment for improved motility. J Spinal Cord Med 2021; 44:966-971. [PMID: 32043922 PMCID: PMC8725690 DOI: 10.1080/10790268.2020.1722937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVE To observe the seminal plasma proteomic composition in men with spinal cord injury orally treated with probenecid, in order to observe pathways associated with increased sperm motility. STUDY DESIGN Prospective study. SETTING Miami Project to Cure Paralysis - University of Miami/Miller School of Medicine. PARTICIPANTS Nine men with spinal cord injury, who agreed to participate in the study. INTERVENTION Oral treatment with probenecid - 500 mg per day for one week, then 500 mg twice daily [1000 mg total] per day for three weeks. OUTCOME MEASURES Semen analysis as per WHO 2010 guidelines, and seminal plasma proteomics analysis by LC-MS/MS. RESULTS In total, 783 proteins were identified, of which, 17 were decreased, while 6 were increased after treatment. The results suggest a new pathway that could be treated by the decrease of biglycan after probenecid treatment. CONCLUSION Oral treatment with probenecid is able to alter the seminal plasma proteome, in pathways that explain decreased innate immune response.
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Affiliation(s)
- Mariana Camargo
- Department of Surgery, Division of Urology, Universidade Federal de São Paulo (UNIFESP), Sao Paulo Hospital, Sao Paulo, Brazil
| | - Emad Ibrahim
- Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miller School of Medicine, Miami, Florida, USA
| | - Teodoro C. Aballa
- Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miller School of Medicine, Miami, Florida, USA
| | | | | | - Charles M. Lynne
- Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miller School of Medicine, Miami, Florida, USA
| | - Nancy L. Brackett
- Miami Project To Cure Paralysis, Miller School of Medicine, University of Miami, Miller School of Medicine, Miami, Florida, USA
| | - Ricardo P. Bertolla
- Department of Surgery, Division of Urology, Universidade Federal de São Paulo (UNIFESP), Sao Paulo Hospital, Sao Paulo, Brazil,Hospital São Paulo, São Paulo, Brazil,Correspondence to: Ricardo P. Bertolla Department of Surgery, Division of Urology, Universidade Federal de São Paulo (UNIFESP), Sao Paulo Hospital, R Embau, 231, 04039-060Sao Paulo, Brazil. Supplemental data for this article can be accessed on the publisher's website https://doi.org/10.1080/10790268.2020.1722937
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Costa-Barbosa FA, Carvalho VM, Oliveira KC, Vieira JGH, Kater CE. Reassessment of predictive values of ACTH-stimulated serum 21-deoxycortisol and 17-hydroxyprogesterone to identify CYP21A2 heterozygote carriers and nonclassic subjects. Clin Endocrinol (Oxf) 2021; 95:677-685. [PMID: 34231242 DOI: 10.1111/cen.14550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Heterozygotes (HZs) for 21-hydroxylase deficiency (21OHD) are highly prevalent, ranging from 1:60 to 1:11 for classic and nonclassic (NC) forms, respectively. Detection of HZ and asymptomatic NC by CYP21A2 genotyping is valuable for genetic counselling, but costly, complex and narrowly available. Adrenocorticotropic hormone (ACTH)-stimulated serum 17-hydroxyprogesterone (17P) and 21-deoxycortisol (21DF) discriminate 21OHD phenotypes effectively, notably if measured simultaneously by liquid chromatography-tandem mass spectrometry (LC-MS/MS). OBJECTIVE This study was performed to reassess former LC-MS/MS-defined post-ACTH 21DF, 17P and cortisol (F) cutoffs in family members at risk for 21OHD. DESIGN AND PATIENTS Prospective study in which we screened 58 asymptomatic relatives from families with 21OHD patients and compared post-ACTH steroid phenotypes with subsequent genotypes. RESULTS Post-ACTH 21DF, 17P, F and (21DF + 17P)/F ratio segregate NC, HZ and wild-type (WT) phenotypes (subsequently genotyped) with some overlap. New receiver operating characteristic curve-defined cutoffs for post-ACTH 21DF, 17P and (21DF + 17P)/F ratio are 60 ng/dl, 310 ng/dl and 12 (unitless). Twenty-six of 33 HZ and all 6 NC (82.1%) had post-ACTH 21DF > 60 and 17P > 310 ng/dl, whereas 17/19 WT (89.5%) had values below cutoffs. Post-ACTH 21DF and 17P had a strong positive correlation (r = .9558; p < .001). A (21DF + 17P)/F ratio > 12 correctly identified 36 of 39 HZ plus NC (92.3% sensitivity) with 84.2% specificity (16 of 19 WT). Given the high frequency of 21OHD HZ, the negative prediction of ratio values below 12 excludes heterozygosity in 99.8% and 99.1% for classic and NC mutations, respectively. CONCLUSIONS Reassessed ACTH-stimulated 21DF and 17P cutoffs by LC-MS/MS (60 and 310 ng/dl, respectively) correctly recognised 82.5% HZ plus NC, but combined precursor-to-product ratio ([21DF + 17P]/F) cutoff of 12 was superior, identifying 92.3% HZ plus NC. Since one WT subject is an outlier (potential HZ), these values would be somewhat better reinforcing their utility for screening asymptomatic relatives at risk for 21OHD.
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Affiliation(s)
- Flávia A Costa-Barbosa
- Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Steroids Laboratory, Federal University of São Paulo Medical School, EPM/UNIFESP, São Paulo, Sao Paulo, Brazil
- Research and Development Division, Fleury Medicina Diagnóstica, São Paulo, Sao Paulo, Brazil
| | - Valdemir M Carvalho
- Research and Development Division, Fleury Medicina Diagnóstica, São Paulo, Sao Paulo, Brazil
| | - Kelly C Oliveira
- Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Steroids Laboratory, Federal University of São Paulo Medical School, EPM/UNIFESP, São Paulo, Sao Paulo, Brazil
| | - José Gilberto H Vieira
- Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Steroids Laboratory, Federal University of São Paulo Medical School, EPM/UNIFESP, São Paulo, Sao Paulo, Brazil
- Research and Development Division, Fleury Medicina Diagnóstica, São Paulo, Sao Paulo, Brazil
| | - Claudio E Kater
- Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Steroids Laboratory, Federal University of São Paulo Medical School, EPM/UNIFESP, São Paulo, Sao Paulo, Brazil
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10
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Duarte NJC, Kupa LVK, Ferreira-Filho JCR, Fontoura N, Chalom MY, Romano P, Ebner PAR, Silva CAA, Carvalho VM, Bonfá E. UHPLC-MS/MS Method for Determination of Hydroxychloroquine and Its Main Metabolites in Oral Fluid and Whole Blood for Therapeutic Drug Monitoring. J Appl Lab Med 2021; 6:868-880. [PMID: 33907815 DOI: 10.1093/jalm/jfab031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/07/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Hydroxychloroquine (HCQ) blood levels are used to monitor efficacy, safety, and patient adherence during treatment. Oral fluid has emerged as an alternative noninvasive, easily accessible, and low-complexity matrix for drug monitoring. However, there is no analytical method to measure HCQ in oral fluid. Therefore, we developed and validated an ultra-high-performance liquid chromatography-tandem mass (UHPLC-MS/MS) method for the measurement of HCQ and its main metabolites in oral fluid and compared to whole blood. METHODS Ten microliters of matrices were used for sample preparation by protein precipitation with acetonitrile followed by online solid phase extraction. The validation process included assessment of lower limit of quantification, linearity, precision, recovery, matrix effect, interferences assessment, carryover, and sample dilution validation. RESULTS The lower limit of quantification was 50 ng/mL for HCQ and metabolites in both oral fluid and whole blood. The calibration curve was linear from 50 to 2000 ng/mL (r2 = 0.999). The coefficient of variation for precision assay was 1.2% to 9.7% for intraday and 1.1% to 14.2% for interday for both HCQ and metabolites in oral fluid and whole blood samples at 150, 750, and 1250 ng/mL. The recovery was 85.3% to 118.5% for 150, 750, and 1250 ng/mL of HCQ and metabolites in both oral fluid and whole blood. Dilution factor up to 5-fold was validated for concentrations higher than the upper limit of quantification. CONCLUSIONS The validated method is specific, precise, and accurate to determine the analytical range for therapeutic monitoring of HCQ and its main metabolites in oral fluid and blood.
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Affiliation(s)
- Nilo J C Duarte
- Central Laboratory Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Laboratório de Investigação Médica (LIM 03), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Léonard V K Kupa
- Rheumatology Division Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Julio C R Ferreira-Filho
- Rheumatology Division Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Nicole Fontoura
- Rheumatology Division Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Marc Y Chalom
- Central Laboratory Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Paschoalina Romano
- Central Laboratory Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Laboratório de Investigação Médica (LIM 03), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Pérsio A R Ebner
- Central Laboratory Division, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Laboratório de Investigação Médica (LIM 03), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Clovis A A Silva
- Rheumatology Division Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Eloisa Bonfá
- Rheumatology Division Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
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11
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Antoniassi MP, Belardin LB, Camargo M, Intasqui P, Carvalho VM, Cardozo KHM, Bertolla RP. Seminal plasma protein networks and enriched functions in varicocele: Effect of smoking. Andrologia 2020; 52:e13562. [PMID: 32150769 DOI: 10.1111/and.13562] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/30/2020] [Accepted: 02/22/2020] [Indexed: 12/14/2022] Open
Abstract
To verify a possible synergistic effect of smoking and varicocele on the seminal plasma proteome and biological functions, a cross-sectional study was performed in 25 smokers and 24 nonsmokers. Samples were used for conventional semen analysis, functional analysis (DNA fragmentation, acrosome integrity and mitochondrial activity) and proteomics by a shotgun approach. Functional enrichment of biological pathways was performed in differentially expressed proteins. Smokers presented lower ejaculate volume (p = .027), percentage of progressively motile spermatozoa (p = .002), total sperm count (p = .039), morphology (p = .001) and higher percentage of immotile spermatozoa (p = .03), round cell (p = .045) and neutrophil count (p = .009). Smokers also presented lower mitochondrial activity and acrosome integrity and higher DNA fragmentation. We identified and quantified 421 proteins in seminal plasma, of which one was exclusive, 21 were overexpressed and 70 were underexpressed in the seminal plasma of smokers. The proteins neprilysin, beta-defensin 106A and histone H4A were capable of predicting the smoker group. Enriched functions were related to immune function and sperm machinery in testis/epididymis. Based on our findings, we can conclude that cigarette smoking leads to the establishment of inflammatory protein pathways in the testis/epididymis in the presence of varicocele that seems to act in synergy with the toxic components of the cigarette.
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Affiliation(s)
- Mariana P Antoniassi
- Division of Urology, Department of Surgery, Human Reproduction Section, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Larissa B Belardin
- Division of Urology, Department of Surgery, Human Reproduction Section, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mariana Camargo
- Division of Urology, Department of Surgery, Human Reproduction Section, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Paula Intasqui
- Division of Urology, Department of Surgery, Human Reproduction Section, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Ricardo P Bertolla
- Division of Urology, Department of Surgery, Human Reproduction Section, Universidade Federal de São Paulo, São Paulo, Brazil
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12
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Pedrosa TN, Pasoto SG, Aikawa NE, Yuki EF, Borba EF, Filho JCF, Carricondo PC, Zanetti CB, Conde PG, Duarte NJ, Fontoura N, Romano P, Carvalho VM, Silva CA, Bonfa E. Understanding the dynamics of hydroxychloroquine blood levels in lupus nephritis. Lupus 2020; 29:560-568. [PMID: 32192398 DOI: 10.1177/0961203320912832] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Objectives It is unknown if hydroxychloroquine blood level dynamics impact flare rates in lupus nephritis patients. We prospectively evaluated hydroxychloroquine levels to determine which blood-based patterns are more associated with disease activity. Methods In total, 82 lupus nephritis patients under a prescribed hydroxychloroquine dose of 4–5.5 mg/kg actual body weight (maximum 400 mg/day) for ≥3 months were evaluated at baseline and 7 months. Hydroxychloroquine blood levels were determined by liquid chromatography-tandem mass spectrometry. Flare was defined as increase ≥3 in the Systemic Lupus Erythematosus Disease Activity Index 2000 score and/or a change or increase in therapy. Results Overall, 9/82(11%) patients had flares during follow-up and had lower baseline hydroxychloroquine blood levels than those without flares (220.4 (53.5–1471.1) vs. 1006.3 (53.5–2137.8) ng/ml, p = 0.013). The hydroxychloroquine blood level cut-off that best predicted flares was 613.5 ng/ml (odds ratio = 8.67, 95% confidence interval: 1.66–45.18, p = 0.006). For 77 (94%) patients, the 7-month hydroxychloroquine level dynamics was evaluated and revealed: 59/77 (77%) had a persistent pattern of adequate (41/77(53%)) or fluctuating (18/77 (23%)) levels, with a low and comparable risk of flares (2/41 (5%) vs. 1/18 (5%), p = 1.000). The remaining group had persistent low levels (18/77 (23%)) and their flare frequency was significantly higher than the adequate group (5/18 (28%) vs. 2/41 (5%), p = 0.023). The frequencies of adequate/inadequate hydroxychloroquine blood levels in patients were comparable at baseline and 7 months (McNemar’s test, p = 0.480). Conclusion We provide novel evidence that hydroxychloroquine blood-level patterns (persistently low, adequate, or intermittent) have distinct impacts on flare rates in lupus nephritis patients. These findings reinforce the need of routine hydroxychloroquine measurements to maintain the appropriate blood levels.
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Affiliation(s)
- Tatiana N Pedrosa
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Sandra G Pasoto
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Nadia E Aikawa
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil.,Pediatric Rheumatology Unit, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Emily Fn Yuki
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Eduardo F Borba
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Julio Cr Ferreira Filho
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil.,Division of Central Laboratory, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Pedro C Carricondo
- Ophtalmology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Caio B Zanetti
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Paola G Conde
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Nilo Jc Duarte
- Division of Central Laboratory, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Nicole Fontoura
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Paschoalina Romano
- Division of Central Laboratory, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | | | - Clovis A Silva
- Pediatric Rheumatology Unit, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Eloisa Bonfa
- Rheumatology Division, Hospital das Clinicas, Faculdade de Medicina da Universidade de Sao Paulo, Sao Paulo, Brazil
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13
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montoni F, Andreotti DZ, Eichler RA, Santos WS, Lima IF, Carvalho VM, Ferro ES, Armelin HA, Iwai LK. Proteomic Proteomic analysis of cerebellum of mice under the effect of Crotalus durissus terrificus venom. Toxicon 2019. [DOI: 10.1016/j.toxicon.2019.06.146] [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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14
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Rocha M, Cardozo KHM, Carvalho VM, Bagatin E. ADT-G as a promising biomarker for peripheral hyperandrogenism in adult female acne. Dermatoendocrinol 2017; 9:e1361571. [PMID: 29497466 PMCID: PMC5823034 DOI: 10.1080/19381980.2017.1361571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/26/2017] [Indexed: 11/03/2022]
Abstract
Acne vulgaris is a chronic inflammatory disease that affects the pilosebaceous unit. Recent studies have shown an increasing number of cases of acne in adult women. These cases are predominantly normoandrogenic and present some clinical differences compared to adolescent acne. Local glandular metabolism turns some weak hormonal precursors into more active substances that increase the production of sebum, leaving these areas more prone to an increasing the colonization by Propionibacterium acnes (P. acnes). Our objective was to evaluate the usefulness of an androgenic metabolite as an adult female acne biomarker. The study population consisted of 38 adult women with acne without any features of hyperandrogenism and a control group. They were recruited from the clinic of Dermatology Hospital Division of São Paulo, Federal University of São Paulo from January 2012 to September 2014. After the first hormonal dosages, patients with acne were randomized into two different groups: one receiving a combined oral contraceptive (COC) containing 0,02 mg of ethinylestradiol and 3 mg drospirenone in a regimen of 24 days of medication, and the other group was treated with a topical gel containing 15% azelaic acid (AA), twice daily, both for six months. With the end of treatment new dosages were performed. Regarding the hormones, total and free testosterone and dehydroepiandrosterone sultate were quantified. In addition, the detection and quantification of androsterone glucuronate (ADT-G), an androgenic metabolite, has been developed. Only ADT-G was sensitive in detecting differences between the control and acne groups, and presented reduction of their values with systemic treatment. Therefore, only ADT-G was able to analyze the peripheral hyperandrogenism in cases of adult female acne.
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Affiliation(s)
- Marco Rocha
- Escola Paulista de Medicina-Universidade Federal de São Paulo (EPM-Unifesp), Brazil
| | | | | | - Edieia Bagatin
- Escola Paulista de Medicina-Universidade Federal de São Paulo (EPM-Unifesp), Brazil
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15
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Assoni A, Coatti G, Valadares MC, Beccari M, Gomes J, Pelatti M, Mitne-Neto M, Carvalho VM, Zatz M. Different Donors Mesenchymal Stromal Cells Secretomes Reveal Heterogeneous Profile of Relevance for Therapeutic Use. Stem Cells Dev 2016; 26:206-214. [PMID: 27762666 DOI: 10.1089/scd.2016.0218] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a lethal X-linked disorder caused by null mutations in the dystrophin gene. Although the primary defect is the deficiency of muscle dystrophin, secondary events, including chronic inflammation, fibrosis, and muscle regeneration failure are thought to actively contribute to disease progression. Despite several advances, there is still no effective therapy for DMD. Therefore, the potential regenerative capacities, and immune-privileged properties of mesenchymal stromal cells (MSCs), have been the focus of intense investigation in different animal models aiming the treatment of these disorders. However, these studies have shown different outcomes according to the sources from which MSCs were obtained, which raise the question whether stem cells from distinct sources have comparable clinical effects. Here, we analyzed the protein content of the secretome of MSCs, isolated from three different sources (adipose tissue, skeletal muscle, and uterine tubes), obtained from five donors and evaluated their in vitro properties when cocultured with DMD myoblasts. All MSC lineages showed pathways enrichment related to protein metabolic process, oxidation-reduction process, cell proliferation, and regulation of apoptosis. We found that MSCs secretome proteins and their effect in vitro vary significantly according to the tissue and donors, including opposite effects in apoptosis assay, indicating the importance of characterizing MSC secretome profile before its use in animal and clinical trials. Despite the individual differences a pool of conditioned media from all MSCs lineages was able to delay apoptosis and enhance migration when in contact with DMD myoblasts.
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Affiliation(s)
- Amanda Assoni
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Giuliana Coatti
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Marcos C Valadares
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Melinda Beccari
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Juliana Gomes
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Mayra Pelatti
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
| | - Miguel Mitne-Neto
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil .,2 Fleury Group (Research and Development Department), São Paulo, Brazil
| | | | - Mayana Zatz
- 1 Human Genome and Stem Cell Research Center, Institute of Biosciences University of São Paulo , São Paulo, Brazil
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Perez JD, Sakata MM, Colucci JA, Spinelli GA, Felipe CR, Carvalho VM, Cardozo KHM, Medina-Pestana JO, Tedesco-Silva H, Schor N, Casarini DE. Plasma proteomics for the assessment of acute renal transplant rejection. Life Sci 2016; 158:111-20. [PMID: 27393492 DOI: 10.1016/j.lfs.2016.06.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/08/2016] [Accepted: 06/28/2016] [Indexed: 12/13/2022]
Abstract
UNLABELLED Renal transplant is the best treatment for patients with chronical kidney disease however acute graft rejection is the major impediment to success in renal transplantation leading to loss of the organ the first year after transplantation. The aim of this study was to identify plasma proteins that may be early biomarkers of acute rejection of renal allograft, developing a diagnostic model that avoids the loss of the transplanted organ. Shotgun proteomics (LC-MS/MS) method was used to analyze a set of thirty-one plasma samples, including 06 from patients with acute graft rejection after transplantation (rejection group/Rej-group) and twenty-five from renal transplant patients with stable renal graft function (control group/Ct-group). As results nineteen proteins were upregulated in the rejection group compared to the control group, and two proteins were downregulated; and three were present exclusively in the rejection group. After analysis, we selected four proteins that were related to the acute phase response and that were strongly associated with each other: they are alpha-1 antitrypsin (A1AT), alpha-2 antiplasmin (A2AP), serum amyloid A (SAA) and apolipoprotein CIII (APOC3). We think that simultaneous monitoring of SAA and APOC3 can provide insights into a broad profile of signaling proteins and is highly valuable for the early detection of a possible acute renal graft rejection. STATEMENT OF SIGNIFICANCE OF THE STUDY In this study we did plasma shotgun patients with and without acute rejection of renal allograft. In a clinical setting an acute rejection is typically suspected upon an increase in plasma creatinine and renal biopsy. But these methods are late and unspecific; sometimes the rejection process is already advanced when there is an increase in serum creatinine. Therefore, it is necessary to find proteins that can predict the allograft rejection process. In our study were able to identify changes in the concentration of plasma protein belonging to a network of protein interaction processes the acute phase response. We believe, therefore, that development of a routine diagnosis of these proteins can detect early acute rejection of renal allograft process, thus preventing its loss.
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Affiliation(s)
- Juliana D Perez
- Department of Medicine, Division of Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Maísa M Sakata
- Department of Medicine, Division of Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Juliana A Colucci
- Universidade de Santo Amaro, Programa em Medicina Populacional, São Paulo, Brazil
| | - Gláucio A Spinelli
- Nephrology Division, Hospital do Rim e Hipertensão, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Claudia R Felipe
- Nephrology Division, Hospital do Rim e Hipertensão, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - José O Medina-Pestana
- Nephrology Division, Hospital do Rim e Hipertensão, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Hélio Tedesco-Silva
- Nephrology Division, Hospital do Rim e Hipertensão, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Nestor Schor
- Department of Medicine, Division of Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Dulce E Casarini
- Department of Medicine, Division of Nephrology, Universidade Federal de São Paulo, São Paulo, Brazil.
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Facuri LMAM, Silva RR, da Silva FF, de Carvalho GGP, Sampaio CB, Mendes FBL, Lisboa MM, Barroso DS, Carvalho VM, Pereira MMS. Ingestive Behavior of Heifers Supplemented with Glycerin in Substitution of Corn on Brachiaria brizantha Pasture. Asian-Australas J Anim Sci 2014; 27:1584-92. [PMID: 25358318 PMCID: PMC4213703 DOI: 10.5713/ajas.2014.14233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/05/2014] [Accepted: 06/28/2014] [Indexed: 11/27/2022]
Abstract
The objective was to evaluate the ingestive behavior of crossbred heifers finished on a Brachiaria brizantha cv. Marandu pasture receiving four levels of glycerin in their supplementation. Thirty-six crossbred heifers with average initial weight of 264.83±3.83 kg and 20 months of age were distributed into a completely randomized design with four treatments and nine replications: control (0%), 4.82%, 10.12%, and 15.56% glycerin in the dry matter. The grazing time reduced linearly (p<0.05), whereas the time spent on activities like rumination, idleness, trough and total chewing time were quadratically affected (p<0.05). Bite rate and number of bites/day were quadratically influenced (p<0.05). The number of bites/swallowed cud and the number of bites/minute, however, increased linearly (p<0.05). Although the time spent on each cud and number of chews per cud were not affected (p>0.05). The number of rumination periods reduced linearly (p<0.05), whereas the number of grazing, idle and trough periods, and the times per grazing, idle, rumination and trough periods were quadratically affected (p<0.05). The feed and rumination efficiencies of the dry matter, non-fibrous carbohydrates, pasture dry matter and concentrate were quadratically affected (p>0.05) whereas the feed efficiency of neutral detergent fiber reduced linearly (p<0.05). Addition of glycerin in substitution of corn in supplements for animals managed on pastures does not influenced feed intake, but reduces the grazing time and increases the idle time. The supplementation also improves feed and rumination efficiencies.
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18
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Intasqui P, Camargo M, Del Giudice PT, Spaine DM, Carvalho VM, Cardozo KHM, Cedenho AP, Bertolla RP. Unraveling the sperm proteome and post-genomic pathways associated with sperm nuclear DNA fragmentation. J Assist Reprod Genet 2013; 30:1187-202. [PMID: 23893156 DOI: 10.1007/s10815-013-0054-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 07/10/2013] [Indexed: 01/18/2023] Open
Abstract
PURPOSE Sperm DNA fragmentation has been suggested as a marker for infertility diagnosis and prognosis. Hence, understanding its impact on male physiology and post-genomic pathways would be clinically important. We performed the proteomics and functional enrichment analyses of viable spermatozoa from ejaculates with low and high sperm DNA fragmentation to identify protein expression and pathways altered in association with sperm DNA fragmentation. METHODS Sperm DNA fragmentation using the Comet assay and the Komet 6.0.1 software was assessed in raw samples from 89 subjects from a human reproduction service. The Low and High sperm DNA fragmentation groups were formed according to the Olive Tail Moment variable. Spermatozoa proteins from these groups were pooled and analyzed by a shotgun proteomic approach (2D nanoUPLC-ESI-MS(E)). Differentially expressed proteins were used for a functional enrichment study. RESULTS Two hundred and fifty-seven proteins were identified or quantified in sperm from the Low and High sperm DNA fragmentation groups. Of these, seventy-one proteins were exclusively or overexpressed in the Low group, whereas twenty-three proteins were exclusively or overexpressed in the High group. One hundred and sixty-three proteins were conserved between these groups. We also functionally related the differentially expressed proteins in viable spermatozoa from the groups. Processes such as triacylglycerol metabolism, energy production, protein folding, response to unfolded proteins, and cellular detoxification were found to be altered in these cells. CONCLUSIONS Sperm DNA fragmentation is associated with differential protein expression in viable spermatozoa. These proteins may potentially be used as biomarkers for sperm DNA integrity.
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Affiliation(s)
- Paula Intasqui
- Department of Surgery, Division of Urology, Human Reproduction Section, Sao Paulo Federal University - Sao Paulo Hospital, R. Embau, 231, 04039-060, Sao Paulo, Brazil,
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Intasqui P, Camargo M, Del Giudice PT, Spaine DM, Carvalho VM, Cardozo KHM, Zylbersztejn DS, Bertolla RP. Sperm nuclear DNA fragmentation rate is associated with differential protein expression and enriched functions in human seminal plasma. BJU Int 2013; 112:835-43. [PMID: 23890255 DOI: 10.1111/bju.12233] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To analyse the proteomic profile of seminal plasma with the aim of identifying the proteins and post-genomic pathways associated with sperm DNA fragmentation. MATERIALS AND METHODS A cross-sectional study including 89 subjects from a human reproduction service was carried out. All semen samples were assessed for sperm DNA fragmentation using a comet assay. Results from 60 sperm were analysed using Komet 6.0.1 software and the 'Olive tail moment' variable was used to stratify these into low and high sperm DNA fragmentation groups. Seminal plasma proteins from the two groups were pooled and used for proteomic analysis. Quantitative data were used for functional enrichment studies. RESULTS Seventy-two proteins were identified or quantified in seminal plasma. Of these, nine were differentially expressed in the low group and 21 in the high group. Forty-two proteins were conserved between these groups. Functional enrichment analysis indicated that sperm DNA fragmentation was related to functions such as lipoprotein particle remodelling and regulation, fatty acid binding and immune response. Proteins found exclusively in the low group may be involved in correcting spermatogenesis and/or improving sperm function. Proteins in the high group were associated with increased innate immune response, sperm motility and/or maturation and inhibition of mitochondrial apoptosis. CONCLUSION Protein expression and post-genomic pathways of seminal plasma differ according to the rate of sperm DNA integrity.
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Affiliation(s)
- Paula Intasqui
- Department of Surgery, Division of Urology, Human Reproduction Section, Sao Paulo Federal University
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Biselli JM, Zampieri BL, Goloni-Bertollo EM, Haddad R, Fonseca MFR, Eberlin MN, Vannucchi H, Carvalho VM, Pavarino EC. Genetic polymorphisms modulate the folate metabolism of Brazilian individuals with Down syndrome. Mol Biol Rep 2012; 39:9277-84. [PMID: 22903356 DOI: 10.1007/s11033-012-1629-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 04/16/2012] [Indexed: 12/01/2022]
Abstract
Individuals with Down syndrome (DS) carry three copies of the Cystathionine β-synthase (CβS) gene. The increase in the dosage of this gene results in an altered profile of metabolites involved in the folate pathway, including reduced homocysteine (Hcy), methionine, S-adenosylhomocysteine (SAH) and S-adenosylmethionine (SAM). Furthermore, previous studies in individuals with DS have shown that genetic variants in genes involved in the folate pathway influence the concentrations of this metabolism's products. The purpose of this study is to investigate whether polymorphisms in genes involved in folate metabolism affect the plasma concentrations of Hcy and methylmalonic acid (MMA) along with the concentration of serum folate in individuals with DS. Twelve genetic polymorphisms were investigated in 90 individuals with DS (median age 1.29 years, range 0.07-30.35 years; 49 male and 41 female). Genotyping for the polymorphisms was performed either by polymerase chain reaction (PCR) based techniques or by direct sequencing. Plasma concentrations of Hcy and MMA were measured by liquid chromatography-tandem mass spectrometry as previously described, and serum folate was quantified using a competitive immunoassay. Our results indicate that the MTHFR C677T, MTR A2756G, TC2 C776G and BHMT G742A polymorphisms along with MMA concentration are predictors of Hcy concentration. They also show that age and Hcy concentration are predictors of MMA concentration. These findings could help to understand how genetic variation impacts folate metabolism and what metabolic consequences these variants have in individuals with trisomy 21.
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Affiliation(s)
- J M Biselli
- Departamento de Biologia Molecular, Faculdade de Medicina de São José do Rio Preto (FAMERP), Unidade de Pesquisa em Genética e Biologia Molecular (UPGEM), Av. Brigadeiro Faria Lima, n.o 5416-Bloco U-6, São José do Rio Preto, SP, CEP: 15.090-000, Brazil
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Costa-Barbosa FA, Carvalho VM, Nakamura OH, Bachega TASS, Vieira JGH, Kater CE. Zona fasciculata 21-hydroxysteroids and precursor-to-product ratios in 21-hydroxylase deficiency: further characterization of classic and non-classic patients and heterozygote carriers. J Endocrinol Invest 2011; 34:587-92. [PMID: 20924223 DOI: 10.3275/7273] [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] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Although much is known about the increased levels of the 21-hydroxylase substrates 17-hydroxyprogesterone (17OHP) and 21-deoxycortisol (21DF) - the biochemical markers of all forms of 21-hydroxylase deficiency (21OHD), only limited information is available on the zona fasciculata (ZF) products distal to the enzymatic block: 11-deoxycortisol (S), 11-deoxycorticosterone (DOC), and corticosterone (B). OBJECTIVE To investigate whether basal and post-ACTH levels of S, DOC, and B and the 21-hydroxylase precursor-to-product ratios determined by tandem mass spectrometry preceded by high-performance liquid chromatography separation (liquid chromatography-tandem mass spectrometry) could disclose distinct profiles in genotypically confirmed classic (no.=14) and non-classic (NC) (no.=18) patients, heterozygote carriers (no.=61) and wildtypes (WT) (no.=27) for 21OHD. RESULTS Salt wasting (SW) and simple virilizing (SV) had higher basal levels of DOC with no further increase in response to ACTH. Stimulated DOC was similar in 21OHD patients and carriers but was reduced as compared to WT. ACTH-stimulated B increased gradually from SW and SV through WT. The post-ACTH 21DF/B ratio was able to detect 92% of the carriers among WT. All NC patients could be detected by post-ACTH 17OHP/DOC and 21DF/B, with no overlap with 21OHD carriers. CONCLUSION Although 21-hydroxylase is a key enzymatic step in both 17-hydroxy and 17-deoxy pathways of ZF, the reaction is mostly affected in the latter pathway, leading to a significant impairment of B production, which may further characterize the 21OHD subtypes. Also, the precursor-to-product ratios, particularly 21DF/B, can demonstrate the distinctive outline of 21OHD subtypes, including carriers and normal subjects.
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Affiliation(s)
- F A Costa-Barbosa
- Steroids Laboratory, Adrenal and Hypertension Unit, Division of Endocrinology, Department of Medicine, Federal University of São Paulo, UNIFESP-EPM, São Paulo, Brazil
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Cardozo KHM, Marques LG, Carvalho VM, Carignan MO, Pinto E, Marinho-Soriano E, Colepicolo P. Analyses of photoprotective compounds in red algae from the Brazilian coast. Rev bras farmacogn 2011. [DOI: 10.1590/s0102-695x2011005000047] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Costa-Barbosa FA, Tonetto-Fernandes VF, Carvalho VM, Nakamura OH, Moura V, Bachega TASS, Vieira JGH, Kater CE. Superior discriminating value of ACTH-stimulated serum 21-deoxycortisol in identifying heterozygote carriers for 21-hydroxylase deficiency. Clin Endocrinol (Oxf) 2010; 73:700-6. [PMID: 20846292 DOI: 10.1111/j.1365-2265.2010.03871.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Congenital adrenal hyperplasia caused by classic 21-hydroxylase deficiency (21OHD) is an autosomal recessive disorder with a high prevalence of asymptomatic heterozygote carriers (HTZ) in the general population, making case detection desirable by routine methodology. HTZ for classic and nonclassic (NC) forms have basal and ACTH-stimulated values of 17-hydroxyprogesterone (17OHP) that fail to discriminate them from the general population. 21-Deoxycortisol (21DF), an 11-hydroxylated derivative of 17OHP, is an alternative approach to identify 21OHD HTZ. OBJECTIVE To determine the discriminating value of basal and ACTH-stimulated serum levels of 21DF in comparison with 17OHP in a population of HTZ for 21OHD (n = 60), as well as in NC patients (n = 16) and in genotypically normal control subjects (CS, n = 30), using fourth generation tandem mass spectrometry after HPLC separation (LC-MS/MS). RESULTS Basal 21DF levels were not different between HTZ and CS, but stimulated values were increased in the former and virtually nonresponsive in CS. Only 17·7% of the ACTH-stimulated 21DF levels overlapped with CS, when compared to 46·8% for 17OHP. For 100% specificity, the sensitivities achieved for ACTH-stimulated 21DF, 17OHP and the quotient [(21DF + 17OHP)/F] were 82·3%, 53·2% and 87%, using cut-offs of 40, 300 ng/dl and 46 (unitless), respectively. Similar to 17OHP, ACTH-stimulated 21DF levels did not overlap between HTZ and NC patients. A positive and highly significant correlation (r = 0·846; P < 0·001) was observed between 21DF and 17OHP pairs of values from NC and HTZ. CONCLUSION This study confirms the superiority of ACTH-stimulated 21DF, when compared to 17OHP, both measured by LC-MS/MS, in identifying carriers for 21OHD. Serum 21DF is a useful tool in genetic counselling to screen carriers among relatives in families with affected subjects, giving support to molecular results.
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Affiliation(s)
- Flávia A Costa-Barbosa
- Steroids Laboratory, Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
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Biselli JM, Machado FB, Zampieri BL, Alves da Silva AF, Goloni-Bertollo EM, Haddad R, Eberlin MN, Vannucchi H, Carvalho VM, Medina-Acosta E, Pavarino-Bertelli EC. Double aneuploidy (48,XXY,+21) of maternal origin in a child born to a 13-year-old mother: evaluation of the maternal folate metabolism. Genet Couns 2009; 20:225-234. [PMID: 19852428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The occurrence of non-mosaic double trisomy is exceptional in newborns. In this paper, a 48,XXY,+21 child, the parental origin of the extra chromosomes and the evaluation of the maternal folate metabolism are presented. The infant was born to a 13-year-old mother and presented with the typical clinical features of Down syndrome (DS). The origin of the additional chromosomes was maternal and most likely resulted from errors during the first meiotic division. Molecular analysis of 12 genetic polymorphisms involved in the folate metabolism revealed that the mother is heterozygous for the MTHFR C677T and TC2 A67G polymorphisms, and homozygous for the mutant MTRR A66G polymorphism. The maternal homocysteine concentration was 4.7 miromol/L, a value close to the one considered as a risk factor for DS in our previous study. Plasma methylmalonic acid and serum folate concentrations were 0.17 micromol/L and 18.4 ng/mL, respectively. It is possible that the presence of allelic variants for the folate metabolism and Hey concentration might have favored errors in chromosomal disjunction during gametogenesis in this young mother. To our knowledge, this is the first patient with non-mosaic Down-Klinefelter born to a teenage mother, resulting from a rare fertilization event combining an abnormal 25,XX,+21 oocyte and a 23,Y spermatozoon.
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Affiliation(s)
- J M Biselli
- Unidade de Pesquisa em Genética e Biologia Molecular, Departamento de Biologia Molecular, Faculdade de Medicina de São José do Rio Preto--FAMERP, São José do Rio Preto, SP, Brasil
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Carvalho VM, Perdigão PF, Amaral FR, de Souza PEA, De Marco L, Gomez RS. Novel mutations in the SH3BP2 gene associated with sporadic central giant cell lesions and cherubism. Oral Dis 2008; 15:106-10. [PMID: 19017279 DOI: 10.1111/j.1601-0825.2008.01499.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Central giant cell lesion (CGCL) is a reactive bone lesion that occurs mainly in the mandible, characterized by the multinucleated osteoclast-like giant cells in a background of oval to spindle-shaped mononuclear cells. The etiology is unknown and occurs more commonly in young adults. Cherubism, a rare disease found predominantly in females has histologic characteristics indistinguishable from those of CGCL and is caused by mutations mostly present in exon 9 of the SH3BP2 gene. In this study, we investigated four cases of CGCL and one case of cherubism. DNA was extracted from peripheral blood and tumor tissue and all coding and flanking regions of the SH3BP2 amplified by PCR and directly sequenced to identify underlying mutations. Two novel mutations were found; a heterozygous missense mutation c.1442A>T (Q481L) in exon 11 in one sporadic case of CGCL and a heterozygous germline and tumor tissue missense mutation c.320C>T (T107M) in exon 4 in one patient with cherubism. These findings open a new window to investigate the possible relationship between the pathogenesis of the cherubism and CGCL.
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Affiliation(s)
- V M Carvalho
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Vieira JGH, Nakamura OH, Ferrer CM, Tachibana TT, Endo MHK, Carvalho VM. Importância da metodologia na dosagem de testosterona sérica: comparação entre um imunoensaio direto e um método fundamentado em cromatografia líquida de alta performance e espectrometria de massa em tandem (HPLC/MS-MS). ACTA ACUST UNITED AC 2008; 52:1050-5. [DOI: 10.1590/s0004-27302008000600017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Accepted: 06/04/2008] [Indexed: 11/22/2022]
Abstract
A dosagem de testosterona sérica, total ou fração livre, é metodologia de alto valor diagnóstico e encontra-se disponível na maioria dos laboratórios clínicos. Esta disponibilidade foi possível pelo desenvolvimento de metodologias simples e diretas, adaptáveis a plataformas de dosagem automatizada. Uma série de publicações recentes tem alertado quanto às limitações destas metodologias, em especial em amostras com baixas concentrações, como mulheres e crianças. Neste trabalho serão apresentados os resultados do emprego de uma metodologia de referência, fundamentada em cromatografia líquida de alta performance e espectrometria de massa em tandem (HPLC/MS-MS), e sua comparação com uma dosagem de rotina (ensaio eletroquimioluminescente - ECLIA). Os métodos são comparados tanto na dosagem de testosterona total (n = 213) quanto na determinação de testosterona livre calculada com base na determinação da testosterona total e da proteína carregadora de hormônios sexuais (SHBG) (n = 135). Os valores obtidos com o ECLIA são significativamente mais elevados, sendo a dispersão mais nítida em soros com baixas concentrações. Tal fenômeno fica mais claro quando apresentado na forma de gráficos de Bland-Altman. Neste trabalho são discutidas as dificuldades de implementação de uma metodologia de referência, como a apresentada, e a convivência com as metodologias de rotina, bem como a literatura recente sobre o assunto.
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Carvalho VM, Irino K, Onuma D, Pestana de Castro AF. Random amplification of polymorphic DNA reveals clonal relationships among enteropathogenic Escherichia coli isolated from non-human primates and humans. ACTA ACUST UNITED AC 2008; 40:237-41. [PMID: 17273660 DOI: 10.1590/s0100-879x2007000200010] [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: 05/23/2006] [Accepted: 09/25/2006] [Indexed: 11/22/2022]
Abstract
Enteropathogenic Escherichia coli (EPEC) strains are important agents of infantile diarrhea all over the world, gaining even greater importance in developing countries. EPEC have also been isolated from various animal species, but most isolates belong to serotypes that differ from those recovered from humans. However, it has been demonstrated that several isolates from non-human primates belong to the serogroups and/or serotypes related to those implicated in human disease. The objective of this study was to evaluate the genetic differences between thirteen strains isolated from non-human primates and the same number of strains isolated from human infections. Human isolates belonged to the same serogroup/serotype as the monkey strains and the evaluation was done by analysis of random amplified polymorphic DNA. Dendrogram analysis showed that there was no clustering between human and monkey strains. Human and non-human isolates of the EPEC serotypes O127:H40 and O128:H2 shared 90 and 87% of their bands, respectively, indicating strong genomic similarity between the strains, leading to the speculation that they may have arisen from the same pathogenic clone. To our knowledge, this study is the first one comparing genomic similarity between human and non-human primate strains and the results provide further evidence that monkey EPEC strains correlate with human EPEC, as suggested in a previous investigation.
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Affiliation(s)
- V M Carvalho
- Faculdade de Medicina Veterinária, Instituto de Ciências da Saúde, Universidade Paulista, Rua Dr. Bacelar 1212, 04026-002 São Paulo, SP, Brazil.
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28
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Cardozo KHM, Carvalho VM, Pinto E, Colepicolo P. Fragmentation of mycosporine-like amino acids by hydrogen/deuterium exchange and electrospray ionisation tandem mass spectrometry. Rapid Commun Mass Spectrom 2006; 20:253-8. [PMID: 16345122 DOI: 10.1002/rcm.2305] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The determination and identification of mycosporine-like amino acids (MAAs) from algae remain a major challenge due to the low concentration. Mass spectrometry (MS) can make an invaluable contribution in the search and identification of MAAs because of its high sensitivity, possibility of coupling with liquid chromatography, and the availability of powerful tandem mass spectrometric techniques. However, the unequivocal determination of the presence and location of important functional groups present on the basic skeleton of the MAAs is often elusive due to their inherent instability under MS conditions. In this study, the use of hydrogen/deuterium (H/D) exchange and electrospray ionisation tandem mass spectrometry (ESI-MS/MS) for characterisation of four MAAs (palythine, asterina, palythinol and shinorine) isolated from the macroalgae Gracilaria tenuistipitata Chang et Xia was investigated. The accurate-mass confirmation of the protonated molecules was performed on a Q-TOF instrument. We demonstrate that employing deuterium labelling in ESI-MS/MS analysis provides a convenient tool for the determination of new MAAs. Although the fragmentation patterns of MAAs were discussed earlier, to our knowledge, this is the first time that mechanisms are proposed.
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Affiliation(s)
- Karina H M Cardozo
- Universidade de São Paulo, Instituto de Química, Departamento de Bioquímica, Av Professor Lineu Prestes, 748 CP 20780, CEP 05508900, São Paulo-SP, Brazil
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Vieira JGH, Nakamura OH, Carvalho VM. Dosagem de cortisol e cortisona livres urinários empregando cromatografia líquida associada a espectrometria de massa em tandem (LC-MS/MS). ACTA ACUST UNITED AC 2005; 49:291-8. [PMID: 16184259 DOI: 10.1590/s0004-27302005000200017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A dosagem de cortisol livre na urina (CLU) é um método útil na triagem de pacientes suspeitos de síndrome de Cushing. Os imunoensaios atuais apresentam limitações que dificultam sua aplicação e a comparação de resultados por diferentes ensaios. No presente método para dosagem de cortisol e cortisona livres urinários, baseado em cromatografia líquida com detecção por espectrômetro de massa em tandem (LC-MS/MS), uma alíquota de urina 24h (200µL) é misturada com solução contendo quantidade conhecida de cortisol deuterado e extraída on-line em fase sólida (C18). O eluato é transferido para uma segunda coluna C18 (Phenomenex Luna, 3µ, de 50 x 2mm), e o eluato obtido em modo isocrático é aplicado diretamente no MS/MS modelo Quattro Micro, operando no modo positivo de ionização química a pressão atmosférica (APCI). Todo o processo é automatizado e a quantificação é feita por diluição isotópica com base nas razões das áreas dos picos dos analitos e do padrão interno deuterado. O estudo de especificidade mostrou que nenhum esteróide testado apresenta reatividade cruzada superior a 1% com cortisol ou cortisona. A sensibilidade funcional é <1µg/L para os dois esteróides, e o CV interensaio <8%. Os estudos de recuperação e de linearidade foram satisfatórios, e a comparação entre os resultados obtidos para cortisol em 98 amostras de rotina, pelo ensaio em estudo e por um RIE, mostraram correlação de r= 0,838, sendo os valores obtidos por LC-MS/MS significativamente mais baixos (medianas de 22,0 e 49,4µg/24h, respectivamente) (P<0,0001). Os valores de referência para cortisol foram definidos entre 11 e 43µg/24h, compatíveis com métodos semelhantes recentemente descritos. A dosagem concomitante de cortisona livre urinária permite o estudo da atividade da enzima 11beta-HSD2 e a pesquisa da síndrome do excesso aparente de mineralocorticóides. O método descrito representa a primeira descrição, em nosso meio, de uma nova geração de métodos para a medida de esteróides hormonais, baseados em processos preparativos automatizados e leitura por espectrometria de massa em tandem.
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Carvalho VM, Gasparutto D, Di Mascio P, Medeiros MHG, Cadet J. Site-specific incorporation of the 1-hexanol-1,N6-etheno-2'-deoxyadenosine adduct into oligodeoxyribonucleotides. Bioorg Med Chem 2003; 11:2445-52. [PMID: 12735991 DOI: 10.1016/s0968-0896(03)00125-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Modified oligonucleotides that contain the hydrophobic 1-hexanol-1,N(6)-etheno-2'-deoxyadenosine adduct have been synthesized using a mild solid phase phosphoramidite chemistry. The presence and the integrity of the modified nucleoside in the synthetic oligomers were confirmed by electrospray ionization and MALDI mass spectrometry measurements together with analysis of the complete enzymatic hydrolysate by high performance liquid chromatography coupled to UV and fluorescent detection techniques.
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Affiliation(s)
- Valdemir M Carvalho
- Departamento de Bioqui;mica, Instituto de Qui;mica, Universidade de São Paulo, CP 26 077, CEP 05513-970, São Paulo, Brazil
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Carvalho VM, Asahara F, Di Mascio P, Campos IP, Cadet J, Medeir MH. 1,N6-etheno-2'-deoxyadenosine adducts from trans, trans-2,4-decadienal and trans-2-octenal. Adv Exp Med Biol 2002; 500:229-32. [PMID: 11764942 DOI: 10.1007/978-1-4615-0667-6_33] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- V M Carvalho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Brazil
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Carvalho VM, Asahara F, Di Mascio P, de Arruda Campos IP, Cadet J, Medeiros MH. Novel 1,N(6)-etheno-2'-deoxyadenosine adducts from lipid peroxidation products. Chem Res Toxicol 2000; 13:397-405. [PMID: 10813657 DOI: 10.1021/tx9901682] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
trans,trans-2,4-Decadienal (DDE) is a widespread alpha, beta-unsaturated aldehyde found, for example, in food, water, and environmental pollutants. DDE is also endogenously generated as a breakdown product of lipid peroxidation in cell membranes. In the work presented here, the reaction of DDE with 2'-deoxyadenosine (dAdo) was investigated in an effort to assess its possible DNA damage potential. Besides 1,N(6)-etheno-2'-deoxyadenosine and two products, namely, 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-1,2,3-octanetriol (adduct I) and 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-1,2-heptanediol (adduct II), previously described by our group, two novel etheno adducts were identified. Thus, 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-1-hexanol (adduct III) and 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-2,3-epoxy-1-octanol (adduct IV) were isolated by reverse-phase high-performance liquid chromatography and characterized on the basis of extensive spectroscopic measurements. The formation of the adducts is likely to involve initial DDE oxidation followed by generation of reactive intermediates such as diepoxides, epoxides, and/or hydroperoxides. The subsequent reaction of the latter oxidation products with dAdo will give rise to the four described adducts. We also demonstrated here that upon oxidation, DDE reacts with calf thymus DNA, producing the four dAdo adducts. Interestingly, two of them are the expected products arising from the reaction of dAdo with 4-hydroxy-trans-2-nonenal (HNE) and trans-2-octenal, two other important breakdown lipid peroxidation products. The reactivity of DDE with DNA is lower than that of the latter aldehydes. However, DDE produced a wider variety of adducts. The characterization of the different DNA-etheno adducts and the determination of the mechanism of formation are of great importance for a better understanding of the deleterious biological effects associated with this class of compounds.
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Affiliation(s)
- V M Carvalho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26.077, CEP 05513-970, São Paulo, Brazil
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Cadet J, Carvalho VM, Onuki J, Douki T, Medeiros MH, Di Mascio PD. Purine DNA adducts of 4,5-dioxovaleric acid and 2,4-decadienal. IARC Sci Publ 2000:103-13. [PMID: 10626212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The present overview describes recent findings on the formation of cyclic adducts of purine DNA bases after reaction with two aldehyde compounds, 4,5-dioxovaleric acid (DOVA) and 2,4-decadlenal (DDE), which are involved in 5-aminolaevulinic acid (ALA) accumulation and lipid peroxidation, respectively. ALA accumulates under pathological conditions and is associated with an increased incidence of liver cancer. The final oxidation product of ALA, DOVA, is an efficient alkylating agent of the guanine moieties in both nucleoside and isolated DNA. Adducts were produced through the formation of a Schiff base involving the N2-amino group of 2'-deoxyguanosine and the ketone function of DOVA, respectively. DDE is an important breakdown product of lipid peroxidation. It is cytotoxic to mammalian cells and is known to be implicated in DNA damage. It can bind to 2'-deoxyadenosine, yielding highly fluorescent products, including 1,N6-etheno-2'-deoxyadenosine and two other, related adducts. The reaction mechanism for the formation of DDE-2'-deoxyadenosine adducts involves epoxidation of DDE and subsequent addition of the resulting reactive intermediates to the N6 amino group of 2'-deoxyadenosine, followed by cyclization at the N1 site. Formation of endogenous DNA adducts may contribute to the genotoxic potential of ALA and DDE.
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Affiliation(s)
- J Cadet
- Département de Recherche Fondamentale sur la Matière Condensée Laboratoire 'Lésions des Acides Nucléiques, Grenoble, France
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Carvalho VM, Di Mascio P, de Arruda Campos IP, Douki T, Cadet J, Medeiros MH. Formation of 1,N6-etheno-2'-deoxyadenosine adducts by trans,trans-2, 4-Decadienal. Chem Res Toxicol 1998; 11:1042-7. [PMID: 9760278 DOI: 10.1021/tx9800710] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
trans,trans-2,4-Decadienal (DDE) is an important breakdown product of lipid peroxidation. This aldehyde is cytotoxic to mammalian cells and is known to be implicated in DNA damage. Therefore, attempts were made in this work to assess the reactivity of DDE with 2'-deoxyadenosine (dAdo). It was shown that DDE is able to bind to 2'-deoxyadenosine, yielding highly fluorescent products. Besides 1, N6-etheno-2'-deoxyadenosine (epsilondAdo), two other related adducts, 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-1,2,3-octanetriol and 1-[3-(2-deoxy-beta-D-erythro-pentofuranosyl)-3H-imidazo[2, 1-i]purin-7-yl]-1,2-heptanediol, were isolated by reverse phase high-performance liquid chromatography and characterized on the basis of their UV, fluorescence, nuclear magnetic resonance, and mass spectrometry features. The reaction mechanism for the formation of the DDE-2'-deoxyadenosine adducts involves 2,4-decadienal epoxidation and subsequent addition to the N2 amino group of 2'-deoxyadenosine, followed by cyclization at the N-1 site. Adducts differ by the length of carbon side chain and the number of hydroxyl groups. The present data indicate that DDE can be epoxidized by peroxides, and the resulting products are able to form several adducts with 2'-deoxyadenosine and/or DNA. Endogenous DNA adduct formation can contribute to the already reported high cytotoxicity of DDE to mammalian cells.
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Affiliation(s)
- V M Carvalho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CP 26.077, CEP 05599-970 São Paulo, Brazil
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Costa EO, Diniz LS, Benites NR, Coutinho SD, Carvalho VM, Dutra LF, Serra EG. [Interspecific outbreaks of dermatomycoses +caused by Microsporum canis and Microsporum gypseum]. Rev Saude Publica 1994; 28:337-40. [PMID: 7660034 DOI: 10.1590/s0034-89101994000500005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Dermatomycosis in domestic animals are important zoonosis in view of the fact that they maintain close contact with human beings. Seven ringworm outbreaks are here described, one of M. gypseum involving a cat and a women and the remainder of M. canis involving 20 human beings (adults, young people and children), 5 dogs, 16 cats and a gibbon-monkey (Hylobates lar).
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Affiliation(s)
- E O Costa
- Departamento de Medicina Veterinária Preventiva e Saúde Animal da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Brasil
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