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Cabral S, Rocha T, Caetano S, Mari J, Borschmann R, Asevedo E. Decrease in suicide rates in Brazil during the COVID-19 pandemic. Psychiatry Res 2023; 329:115443. [PMID: 37769372 DOI: 10.1016/j.psychres.2023.115443] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/30/2023]
Abstract
Natural disasters such as public health epidemics may potentially affect suicide rates. The global COVID-19 pandemic poses an unprecedented challenge for healthcare systems and general populations worldwide. In this retrospective ecological study, we aimed to examine any changes in the suicide rates during the COVID-19 pandemic and to assess the relationship between COVID-19 death rates and deaths by suicide in Brazil. Data on suicide and COVID-19 case numbers were extracted from the Ministry of Health agencies and grouped weekly. We performed a time series analysis of suicide rates, a comparison of mean suicide rates between the pre-COVID-19 period and the COVID-19 period, and conducted a Poisson regression to examine the relationship between deaths due to COVID-19 and suicide rates. Our results showed decreased suicide rates during the COVID-19 pandemic. We also found that deaths owing to COVID-19 impact those owing to suicide after 10 weeks in the upward direction; however, we did not observe for enough time to see a change in the suicide rate curve. These findings are fundamental to understand suicidal behaviors in epidemic situations. However, the field needs more studies evaluating the impact of significant public health events on suicidality, incorporating extended follow-up periods.
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Affiliation(s)
- S Cabral
- Unidade de Psiquiatria, Hospital de Base, Instituto de Gestão Estratégica de Saúde do Distrito Federal (IGESDF), Distrito Federal, DF, Brazil; Departamento de Psiquiatria e Psicologia Médica, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - T Rocha
- Departamento de Psiquiatria e Psicologia Médica, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - S Caetano
- Unidade de Psiquiatria, Hospital de Base, Instituto de Gestão Estratégica de Saúde do Distrito Federal (IGESDF), Distrito Federal, DF, Brazil
| | - J Mari
- Unidade de Psiquiatria, Hospital de Base, Instituto de Gestão Estratégica de Saúde do Distrito Federal (IGESDF), Distrito Federal, DF, Brazil
| | - R Borschmann
- Justice Health Unit, Centre for Health Equity, The University of Melbourne, Carlton, Victoria, Australia; Department of Psychiatry, University of Oxford, Warneford Hospital, UK; Centre for Adolescent Health, Murdoch Children's Research Institute, Melbourne, Australia; Melbourne School of Psychological Sciences, The University of Melbourne, Victoria, Australia
| | - E Asevedo
- Departamento de Psiquiatria e Psicologia Médica, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
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Sowerby LJ, Almubarak Z, Biadsee A, Rocha T, Hopkins C. Coronavirus disease 2019 related parosmia: an exploratory survey of demographics and treatment strategies. J Laryngol Otol 2023; 137:1256-1260. [PMID: 37194063 PMCID: PMC10627779 DOI: 10.1017/s0022215123000713] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2023] [Indexed: 05/18/2023]
Abstract
OBJECTIVE To investigate the clinical features, therapeutic efficacy and symptom time course of post-coronavirus disease 2019 parosmia. METHODS A 22-item online questionnaire was distributed to AbScent research group and Facebook coronavirus disease 2019 anosmia group adult members to assess clinical features, interventions and their subjective efficacy for parosmia. RESULTS A total of 209 participants (86 per cent females) reported: smell loss on average 3 days after coronavirus symptoms, recovery 4 weeks later, and first parosmia symptoms 12 weeks post infection. Respondents reported 10 per cent body weight loss, and listed onion and garlic as significant parosmia triggers. Regarding quality of life, depression was the most cited item (54 per cent). Smell training was trialled by 74 per cent of participants, followed by nasal corticosteroid spray (49 per cent). Stellate ganglion block, trialled by 16 per cent of respondents, had the highest reported improvement (45 per cent), with 21 per cent reporting a sustained benefit - the highest rate amongst registered treatment options. CONCLUSION Post-coronavirus parosmia has a significant impact and remains challenging to treat. Stellate ganglion block appears to be successful relative to other reported treatments. Further research into the pathophysiology, efficacy and mechanism of stellate ganglion block effect is warranted.
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Affiliation(s)
- L J Sowerby
- Department of Otolaryngology – Head and Neck Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Z Almubarak
- Department of Otolaryngology – Head and Neck Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - A Biadsee
- Department of Otolaryngology – Head and Neck Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
- Department of Otorhinolaryngology – Head and Neck Surgery, Meir Medical Center, Kfar-Saba, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - T Rocha
- Department of Otolaryngology – Head and Neck Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - C Hopkins
- Department of ENT, Guy's Hospital, London, UK
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Roseiro M, Henriques J, Paredes S, Rocha T, Sousa J. An interpretable machine learning approach to estimate the influence of inflammation biomarkers on cardiovascular risk assessment. Comput Methods Programs Biomed 2023; 230:107347. [PMID: 36645940 DOI: 10.1016/j.cmpb.2023.107347] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 12/28/2022] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND OBJECTIVE Cardiovascular disease has a huge impact on health care services, originating unsustainable costs at clinical, social, and economic levels. In this context, patients' risk stratification tools are central to support clinical decisions contributing to the implementation of effective preventive health care. Although useful, these tools present some limitations, in particular, some lack of performance as well as the impossibility to consider new risk factors potentially important in the prognosis of severe cardiac events. Moreover, the actual use of these tools in the daily practice requires the physicians' trust. The main goal of this work addresses these two issues: (i) evaluate the importance of inflammation biomarkers when combined with a risk assessment tool; (ii) incorporation of personalization and interpretability as key elements of that assessment. METHODS Firstly, machine learning based models were created to assess the potential of the inflammation biomarkers applied in secondary prevention, namely in the prediction of the six month risk of death/myocardial infarction. Then, an approach based on three main phases was created: (i) set of interpretable rules supported by clinical evidence; (ii) selection based on a machine learning classifier able to identify for a given patient the most suitable subset of rules; (iii) an ensemble scheme combining the previous subset of rules in the estimation of the patient cardiovascular risk. All the results were statistically validated (t-test, Wilcoxon-signed rank test) according to a previous verification of data normality (Shapiro-Wilk). RESULTS The proposed methodology was applied to a real acute coronary syndrome patients dataset (N = 1544) from the Cardiology Unit of Coimbra Hospital and Universitary centre. The first assessment was based on the GRACE tool and a Random Forest classifier, the incorporation of inflammation biomarkers achieved SE=0.83; SP=0.84 whereas the original GRACE risk factors reached SE=0.75; SP=0.85. In the second phase, the proposed approach with inflammation biomarkers achieved SE=0.763 and SP=0.778. CONCLUSIONS This approach confirms the potential of combining inflammation markers with the GRACE score, increasing SE and SP, when compared with the original GRACE. Additionally, it assures interpretability and personalization, which are critical issues to allow its application in the daily clinical practice.
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Affiliation(s)
- M Roseiro
- CISUC, Center for Informatics and Systems of University of Coimbra, Coimbra 3030-290, Portugal
| | - J Henriques
- CISUC, Center for Informatics and Systems of University of Coimbra, Coimbra 3030-290, Portugal
| | - S Paredes
- Polytechnic Institute of Coimbra, Coimbra Institute of Engineering (IPC/ISEC), Rua Pedro Nunes, Coimbra 3030-199, Portugal; CISUC, Center for Informatics and Systems of University of Coimbra, Coimbra 3030-290, Portugal.
| | - T Rocha
- Polytechnic Institute of Coimbra, Coimbra Institute of Engineering (IPC/ISEC), Rua Pedro Nunes, Coimbra 3030-199, Portugal; CISUC, Center for Informatics and Systems of University of Coimbra, Coimbra 3030-290, Portugal
| | - J Sousa
- Cardiology Department, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, Coimbra 3004-561, Portugal
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Leite CDS, Bonafé GA, Pires OC, dos Santos TW, Pereira GP, Pereira JA, Rocha T, Martinez CAR, Ortega MM, Ribeiro ML. Dipotassium Glycyrrhizininate Improves Skin Wound Healing by Modulating Inflammatory Process. Int J Mol Sci 2023; 24:ijms24043839. [PMID: 36835248 PMCID: PMC9965141 DOI: 10.3390/ijms24043839] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
Wound healing is characterized by a systemic and complex process of cellular and molecular activities. Dipotassium Glycyrrhizinate (DPG), a side product derived from glycyrrhizic acid, has several biological effects, such as being antiallergic, antioxidant, antibacterial, antiviral, gastroprotective, antitumoral, and anti-inflammatory. This study aimed to evaluate the anti-inflammatory effect of topical DPG on the healing of cutaneous wounds by secondary intention in an in vivo experimental model. Twenty-four male Wistar rats were used in the experiment, and were randomly divided into six groups of four. Circular excisions were performed and topically treated for 14 days after wound induction. Macroscopic and histopathological analyses were performed. Gene expression was evaluated by real-time qPCR. Our results showed that treatment with DPG caused a decrease in the inflammatory exudate as well as an absence of active hyperemia. Increases in granulation tissue, tissue reepithelization, and total collagen were also observed. Furthermore, DPG treatment reduced the expression of pro-inflammatory cytokines (Tnf-α, Cox-2, Il-8, Irak-2, Nf-kB, and Il-1) while increasing the expression of Il-10, demonstrating anti-inflammatory effects across all three treatment periods. Based on our results, we conclude that DPG attenuates the inflammatory process by promoting skin wound healing through the modulation of distinct mechanisms and signaling pathways, including anti-inflammatory ones. This involves modulation of the expression of pro- and anti-inflammatory cytokine expression; promotion of new granulation tissue; angiogenesis; and tissue re-epithelialization, all of which contribute to tissue remodeling.
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Affiliation(s)
- Camila dos Santos Leite
- Laboratory of Immunopharmacology and Molecular Biology, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Gabriel Alves Bonafé
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Oscar César Pires
- Laboratory of Pharmacology, Taubaté University (UNITAU), Taubaté, São Paulo 12030-180, Brazil
| | - Tanila Wood dos Santos
- Laboratory of Immunopharmacology and Molecular Biology, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Geovanna Pacciulli Pereira
- Department of Surgery and Proctology, São Francisco University (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - José Aires Pereira
- Department of Surgery and Proctology, São Francisco University (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Thalita Rocha
- Postgraduate Program in Biomaterials and Regenerative Medicine, Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo, São Paulo 05014-901, Brazil
| | - Carlos Augusto Real Martinez
- Department of Surgery and Proctology, São Francisco University (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Manoela Marques Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
| | - Marcelo Lima Ribeiro
- Laboratory of Immunopharmacology and Molecular Biology, São Francisco University Medical School (USF), Bragança Paulista, São Paulo 12916-900, Brazil
- Correspondence:
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Bonafé GA, dos Santos JS, Fernandes AMADP, Ziegler JV, Marson FAL, Rocha T, Carvalho PDO, Ortega MM. Anti-Migratory Effect of Dipotassium Glycyrrhizinate on Glioblastoma Cell Lines: Microarray Data for the Identification of Key MicroRNA Signatures. Front Oncol 2022; 12:819599. [PMID: 35992881 PMCID: PMC9382584 DOI: 10.3389/fonc.2022.819599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
The nuclear factor kappa B (NF-κB) pathway has been reported to be responsible for the aggressive disease phenomenon observed in glioblastoma (GBM). Dipotassium glycyrrhizinate (DPG), a dipotassium salt of glycyrrhizic acid isolated from licorice, has recently demonstrated an anti-tumoral effect on GBM cell lines U87MG and T98G through NF-κB suppression by IRAK2- and TRAF6-mediating microRNA (miR)-16 and miR-146a, respectively. Thus, the present study aimed to evaluate the expression profiles of miRNAs related to NF-κB suppression in T98G GBM cell line after DPG exposure using miRNA microarray (Affymetrix Human miRNA 4.0A), considering only predicted miRNAs as NF-κB regulator genes. Additional assays using U251 and U138MG cells were performed to validate the array results. DPG cytotoxicity was determined by (4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay, and cellular apoptosis was quantified by DNA fragmentation and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. The anti-proliferative effect was observed by cell proliferation and wound-healing assays, and the sphere formation assay examined whether DPG reduced stem cell subpopulation formation. The most over-expressed miRNAs were miR-4443 and miR-3620. The cytotoxic effect of DPG in U251 and U138MG was observed with an IC50 of 32 and 20 mM for 48 h, respectively. The IC50 of each cell line was used in all further assays. DPG treatment-induced apoptosis is observed by DNA fragmentation and increased TUNEL-positive cells. Cell proliferation and wound-healing assays showed an anti-proliferative and anti-migratory effect by DPG on the evaluated cell lines. In addition, DPG treatment led to a 100% reduction in sphere formation. The qPCR results in U251 and U138MG cells showed that DPG increased miR-4443 (2.44 vs. 1.11, p-value = 0.11; 8.27 vs. 1.25, p-value = 0.04) and miR-3620 expression (1.66 vs. 1.00, p-value = 0.03; 8.47 vs. 1.01, p-value = 0.03) and decreased CD209 (0.44 vs. 1.10, p-value = 0.03; 0.49 vs. 1.07, p-value = 0.04) and TNC (0.20 vs. 1.03, p-value = 0.001; 0.39 vs. 1.06, p-value = 0.01) mRNA levels compared to controls. Our results suggest that DPG inhibits cell viability by activating apoptosis and inhibiting cell proliferation and stem cell subpopulation formation through miR-4443 and miR-3620 upregulation. Both miRNAs are responsible for the post-transcriptional inhibition of NF-κB by CD209 and TNC modulation.
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Affiliation(s)
- Gabriel Alves Bonafé
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | - Jéssica Silva dos Santos
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | | | | | - Fernando Augusto Lima Marson
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | - Thalita Rocha
- Post Graduate Program in Biomaterials and Regenerative Medicine, Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo, Sorocaba, São Paulo, Brazil
| | - Patricia de Oliveira Carvalho
- Multidisciplinary Research Laboratory, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | - Manoela Marques Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, São Francisco University, Bragança Paulista, São Paulo, Brazil
- *Correspondence: Manoela Marques Ortega,
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Bonafé GA, dos Santos JS, Ziegler JV, Marson FAL, Rocha T, Ortega MM. Dipotassium Glycyrrhizinate on Melanoma Cell Line: Inhibition of Cerebral Metastases Formation by Targeting NF-kB Genes-Mediating MicroRNA-4443 and MicroRNA-3620-Dipotassium Glycyrrhizinate Effect on Melanoma. Int J Mol Sci 2022; 23:ijms23137251. [PMID: 35806253 PMCID: PMC9266887 DOI: 10.3390/ijms23137251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/19/2022] [Accepted: 05/21/2022] [Indexed: 02/01/2023] Open
Abstract
Glycyrrhizic acid (GA), a natural compound isolated from licorice (Glycyrrhiza glabra), has exhibited anti-inflammatory and anti-tumor effects in vitro. Dipotassium glycyrrhizinate (DPG), a dipotassium salt of GA, also has shown an anti-tumor effect on glioblastoma cell lines, U87MG and T98G. The study investigated the DPG effects in the melanoma cell line (SK-MEL-28). MTT assay demonstrated that the viability of the cells was significantly decreased in a time- and dose-dependent manner after DPG (IC50 = 36 mM; 24 h). DNA fragmentation suggested that DPG (IC50) induced cellular apoptosis, which was confirmed by a significant number of TUNEL-positive cells (p-value = 0.048) and by PARP-1 [0.55 vs. 1.02 arbitrary units (AUs), p-value = 0.001], BAX (1.91 vs. 1.05 AUs, p-value = 0.09), and BCL-2 (0.51 vs. 1.07 AUs, p-value = 0.0018) mRNA compared to control cells. The proliferation and wound-healing assays showed an anti-proliferative effect on DPG-IC50-treated cells, also indicating an inhibitory effect on cell migration (p-values < 0.001). Moreover, it was observed that DPG promoted a 100% reduction in melanospheres formation (p-value = 0.008). Our previous microRNAs (miRs) global analysis has revealed that DPG might increase miR-4443 and miR-3620 expression levels. Thus, qPCR showed that after DPG treatment, SK-MEL-28 cells presented significantly high miR-4443 (1.77 vs. 1.04 AUs, p-value = 0.02) and miR-3620 (2.30 vs. 1.00 AUs, p-value = 0.01) expression compared to control cells, which are predicted to target the NF-kB, CD209 and TNC genes, respectively. Both genes are responsible for cell attachment and migration, and qPCR revealed significantly decreased CD209 (1.01 vs. 0.54 AUs, p-value = 0.018) and TNC (1.00 vs. 0.31 AUs, p-value = 2.38 × 10−6) mRNA expression levels after DPG compared to untreated cells. Furthermore, the migration of SK-MEL-28 cells stimulated by 12-O-tetradecanoylphorbol-13-acetate (TPA) was attenuated by adding DPG by wound-healing assay (48 h: p-value = 0.004; 72 h: p-value = 7.0 × 10−4). In addition, the MMP-9 expression level was inhibited by DPG in melanoma cells stimulated by TPA and compared to TPA-treated cells (3.56 vs. 0.99 AUs, p-value = 0.0016) after 24 h of treatment. Our results suggested that DPG has an apoptotic, anti-proliferative, and anti-migratory effect on SK-MEL-28 cells. DPG was also able to inhibit cancer stem-like cells that may cause cerebral tumor formation.
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Affiliation(s)
- Gabriel Alves Bonafé
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University (USF), Avenida São Francisco de Assis, 218, Bragança Paulista 12916-900, São Paulo, Brazil; (G.A.B.); (J.S.d.S.); (F.A.L.M.)
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, USF, Bragança Paulista 12916-900, São Paulo, Brazil
| | - Jéssica Silva dos Santos
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University (USF), Avenida São Francisco de Assis, 218, Bragança Paulista 12916-900, São Paulo, Brazil; (G.A.B.); (J.S.d.S.); (F.A.L.M.)
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, USF, Bragança Paulista 12916-900, São Paulo, Brazil
| | | | - Fernando Augusto Lima Marson
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University (USF), Avenida São Francisco de Assis, 218, Bragança Paulista 12916-900, São Paulo, Brazil; (G.A.B.); (J.S.d.S.); (F.A.L.M.)
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, USF, Bragança Paulista 12916-900, São Paulo, Brazil
| | - Thalita Rocha
- Postgraduate Program in Biomaterials and Regenerative Medicine, Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo, Sorocaba 05014-901, São Paulo, Brazil;
| | - Manoela Marques Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, São Francisco University (USF), Avenida São Francisco de Assis, 218, Bragança Paulista 12916-900, São Paulo, Brazil; (G.A.B.); (J.S.d.S.); (F.A.L.M.)
- Laboratory of Human and Medical Genetics, Post Graduate Program in Health Science, USF, Bragança Paulista 12916-900, São Paulo, Brazil
- Correspondence: ; Tel.: +55-11-2454-8471
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Valente F, Paredes S, Henriques J, Rocha T, de Carvalho P, Morais J. Interpretability, personalization and reliability of a machine learning based clinical decision support system. Data Min Knowl Discov 2022. [DOI: 10.1007/s10618-022-00821-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bonafé GA, Boschiero MN, Sodré AR, Ziegler JV, Rocha T, Ortega MM. Natural Plant Compounds: Does Caffeine, Dipotassium Glycyrrhizinate, Curcumin, and Euphol Play Roles as Antitumoral Compounds in Glioblastoma Cell Lines? Front Neurol 2022; 12:784330. [PMID: 35300350 PMCID: PMC8923017 DOI: 10.3389/fneur.2021.784330] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/29/2021] [Indexed: 12/21/2022] Open
Abstract
Many plant-derived compounds are shown to be promising antitumor therapeutic agents by enhancing apoptosis-related pathways and cell cycle impairment in tumor cells, including glioblastoma (GBM) cell lines. We aimed to review four natural plant compounds effective in GBM cell lines as caffeine, dipotassium glycyrrhizinate (DPG), curcumin, and euphol. Furthermore, antitumoral effect of these plant compounds on GBM cell lines through microRNAs (miRs) modulation was investigated. However, only DPG and curcumin were found as effective on miR modulation. Caffeine arrests GBM cell cycle in G0/G1 phase by cyclin-dependent kinases (CDK) complex inhibition and by decreasing BCL-2 and increasing FOXO1 expression levels causing greater apoptotic activity. Caffeine can also directly inhibit IP3R3, p38 phosphorylation, and rho-associated protein kinase (ROCK), decreasing cell invasion and migration capacity or indirectly by inhibiting the tissue inhibitor metalloproteinase-1 (TIMP-1) and integrins β1 and β3, leading to lower matrix metalloproteinases, MMP-2 and MMP-9. DPG presents antitumoral effect in GBM cells related to nuclear factor kappa B (NF-κB) pathway suppression by IRAK2 and TRAF6-mediating miR-16 and miR-146a, respectively. More recently, it was observed that DPG upregulated miR-4443 and miR-3620, responsible for post-transcriptional inhibition of the NF-κB pathway by CD209 and TNC modulation, respectively leading to lower MMP-9 and migration capacity. Curcumin is able to increase miR-223-3p, miR-133a-3p, miR-181a-5p, miR-34a-5p, miR-30c-5p, and miR-1290 expression leading to serine or threonine kinase (AKT) pathway impairment and also it decreases miR-27a-5p, miR-221-3p, miR-21-5p, miR-125b-5p, and miR-151-3p expression causing p53-BCL2 pathway inhibition and consequently, cellular apoptosis. Interestingly, lower expression of miR-27a by curcumin action enhanced the C/EBP homologous protein(CHOP) expression, leading to paraptosis. Curcumin can inhibit miR-21 expression and consequently activate apoptosis through caspase 3 and death receptor (DR) 4 and 5 activation. Autophagy is controlled by the LC-3 protein that interacts with Atg family for the LC3-II formation and autophagy activation. Euphol can enhance LC3-II levels directly in GBM cells or inhibits tumor invasion and migration through PDK1 modulation.
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Affiliation(s)
- Gabriel Alves Bonafé
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School, São Paulo, Brazil
| | - Matheus Negri Boschiero
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School, São Paulo, Brazil
| | - André Rodrigues Sodré
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School, São Paulo, Brazil
| | | | - Thalita Rocha
- Postgraduate Program in Biomaterials and Regenerative Medicine, Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo, São Paulo, Brazil
| | - Manoela Marques Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, São Francisco University Medical School, São Paulo, Brazil
- *Correspondence: Manoela Marques Ortega
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Leite CDS, Pires OC, Tenis DG, Ziegler JVN, Priolli DG, Rocha T. Effects of dipotassium glycyrrhizinate on wound healing. Acta Cir Bras 2021; 36:e360801. [PMID: 34644769 PMCID: PMC8516426 DOI: 10.1590/acb360801] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/08/2021] [Indexed: 01/13/2023] Open
Abstract
PURPOSE Dipotassium glycyrrhizinate (DPG) has anti-inflammatory properties, besides promoting the regeneration of skeletal muscle. However, it has not been reported on skin wound healing/regeneration. This research aimed to characterize the effects of DPG in the treatment of excisional wounds by second intention. METHODS Male adults (n=10) and elderly (n=10) Wistar rats were used. Two circular wounds were excised on the dorsal skin. The excised normal skins were considered adult (GAN) and elderly (GIN) naïve. For seven days, 2% DPG was applied on the proximal excision: treated adult (GADPG) and elderly (GIDPG), whereas distal excisions were untreated adult (GANT) and elderly (GINT). Wound healing areas were daily measured and removed for morphological analyses after the 14th and the 21st postoperative day. Slides were stained with hematoxylin-eosin, Masson's trichrome, and picrosirius red. RESULTS Histological analysis revealed intact (GAN/GIN) and regenerated(GANT/GINT/GADPG/GIDPG) skins. No differences of wounds' size were found among treated groups. Epidermis was thicker after 14 days and thinner after 21 days of DPG administration. Higher collagen I density was found in GIDPG (14th day) and GADPG (21st day). CONCLUSIONS DPG induced woundhealing/skin regeneration, with collagen I, being more effective in the first 14 days after injury.
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Isaacson J, Joiner A, Kozhumam A, Caruzzo N, Andrade L, Iora P, Costa D, Vissoci B, Sartori M, Rocha T, Vissoci J. 91 Access to Care for Emergency Care-Sensitive Conditions in Brazil: A Geographic Information System Approach. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.100] [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: 11/29/2022]
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11
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Neri VC, Pessanha G, Ribeiro AC, Rosas C, Rocha T, Branco L, Aparecida D. Prevalence study of dementia with Lewy bodies in a Parkinson's disease reference center: Clinical and laboratory analysis of a Rio de Janeiro/Brazil cohort. J Neurol Sci 2021. [DOI: 10.1016/j.jns.2021.119007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Bueno TC, Collaço RDC, Cardoso BA, Bredariol RF, Escobar ML, Cajado IB, Gracia M, Antunes E, Zambelli VO, Picolo G, Cury Y, Morandini AC, Marques AC, Sciani JM, Rocha T. Neurotoxicity of Olindias sambaquiensis and Chiropsalmus quadrumanus extracts in sympathetic nervous system. Toxicon 2021; 199:127-138. [PMID: 34139257 DOI: 10.1016/j.toxicon.2021.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 10/21/2022]
Abstract
Cnidarians are equipped with nematocysts, which are specialized organelles used to inoculate venom during prey capturing and defense. Their venoms are rich in toxins and a potential source of bioactive compounds, however, poorly explored so far. In this work, the activity of the methanolic extracts from the hydromedusa Olindias sambaquiensis and the cubozoan jellyfish Chiropsalmus quadrumanus were studied in sympathetic neurotransmission. For that, bisected rat vas deferens - a classic model of sympathetic neurotransmission - were incubated with the extracts for further myographic and histopathological analysis. The O. sambaquiensis extract, at 0.1 μg/mL, facilitated the neurogenic contractions of the noradrenergic-rich epididymal portion, while reducing the noradrenaline (NA) potency, which suggests an interaction with postsynaptic α1-adrenoceptors. On the other hand, a higher concentration (1 μg/mL) leads to time- and frequency-dependent blockade of nerve-evoked contractions without significantly changing the response to exogenous NA. In turn, the C. quadrumanus extract at 0.1 μg/mL induced blockade of nerve-evoked noradrenergic contractions while reducing the potency to exogenous NA. Both extracts did not affect the purinergic neurotransmission or induce muscle damages. Our results demonstrate that O. sambaquiensis and C. quadrumanus extracts significantly interfere with the noradrenergic neurotransmission without altering purinergic response or smooth muscle structure on rat vas deferens. Such results bring to light the pharmacological potential of O. sambaquiensis and C. quadrumanus molecules for therapeutics focusing on noradrenergic neurotransmission.
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Affiliation(s)
- Thais Cavenatti Bueno
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Rita de Cássia Collaço
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, Cidade Universitária Zeferino Vaz, 13083-887, Campinas, SP, Brazil.
| | - Bianca Aparecida Cardoso
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Rafael Fumachi Bredariol
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Marília Leal Escobar
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Isabela Bubenik Cajado
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Marta Gracia
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, Cidade Universitária Zeferino Vaz, 13083-887, Campinas, SP, Brazil.
| | - Vanessa O Zambelli
- Laboratory of Pain and Signaling, Butantan Institute, Avenida Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil.
| | - Gisele Picolo
- Laboratory of Pain and Signaling, Butantan Institute, Avenida Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil.
| | - Yara Cury
- Laboratory of Pain and Signaling, Butantan Institute, Avenida Vital Brasil, 1500, 05503-900, São Paulo, SP, Brazil.
| | - André C Morandini
- Department of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, 05508-090, Brazil; Marine Biology Center, University of São Paulo, São Sebastião, 11612-109, Brazil.
| | - Antonio C Marques
- Department of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, 05508-090, Brazil.
| | - Juliana Mozer Sciani
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
| | - Thalita Rocha
- Multidisciplinary Research Laboratory, São Francisco University (USF), Avenida São Francisco de Assis, 218, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil.
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Lázaro CM, de Oliveira CC, Gambero A, Rocha T, Cereda CMS, de Araújo DR, Tofoli GR. Evaluation of Budesonide-Hydroxypropyl-β-Cyclodextrin Inclusion Complex in Thermoreversible Gels for Ulcerative Colitis. Dig Dis Sci 2020; 65:3297-3304. [PMID: 31974913 DOI: 10.1007/s10620-020-06075-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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] [Received: 11/06/2019] [Accepted: 01/12/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND New formulations for topical treatment of ulcerative colitis with budesonide inclusion complex (BUDHP-β-CD) and poloxamers (PL) were developed for future clinical use. AIMS This study evaluated the efficacy of such novel formulations in a rat model of colitis. METHODS The PL-BUDHP-β-CD systems were prepared by direct dispersion of the complex (BUD concentration 0.5 mg mL-1) in solutions with PL407 or PL403. Male Wistar rats underwent TNBS-induced colitis and were treated for 5 days by a rectal route, as follows: BUD 1: BUDHP-β-CD + PL407 (18%); BUD 2: BUDHP-β-CD + PL407 (20%); BUD 3: BUDHP-β-CD + PL407 (18%) + PL403 (2%); BUD 4: plain BUD; BUD 5: BUDHP-β-CD; C1: HP-β-CD + PL407 (18%); C2: HP-β-CD + PL407 (20%); C3: HP-β-CD + PL407 (18%) + PL403 (2%); C4: saline. A negative control group without colitis was also used. Colitis was assessed via myeloperoxidase (MPO) activity, and macroscopic and microscopic damage score in colon tissues. Protein levels of TNF-α, IL-1β, IL-10 and endogenous glucocorticoids were obtained using ELISA. RESULTS BUDHP-β-CD poloxamer formulations had similar MPO activity when compared with the negative control group. All formulations presented lower MPO activity than BUDHP-β-CD and plain BUD (p < 0.001). BUD 2 produced lower microscopic score values than plain BUD and BUDHP-β-CD (p < 0.01). All formulations with BUDHP-β-CD poloxamers reduced TNF-α levels (p < 0.05). CONCLUSION Novel budesonide inclusion complex formulations improved microscopic damage and reduced colonic MPO activity and TNF-α levels.
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Affiliation(s)
- Carolina Martins Lázaro
- Universidade São Francisco, Av. São Francisco de Assis 218, Bragança Paulista, São Paulo, 12916-900, Brazil
| | - Carolina C de Oliveira
- Universidade São Francisco, Av. São Francisco de Assis 218, Bragança Paulista, São Paulo, 12916-900, Brazil
| | - Alessandra Gambero
- Universidade Estadual de Campinas, Av. Alexandre Cazelatto 999, Paulínia, 13140-000, São Paulo, Brazil
| | - Thalita Rocha
- Universidade São Francisco, Av. São Francisco de Assis 218, Bragança Paulista, São Paulo, 12916-900, Brazil
| | - Cintia Maria Saia Cereda
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Rua José Rocha Junqueira 13, Campinas, São Paulo, 13045-75, Brazil
| | - Daniele Ribeiro de Araújo
- Universidade Federal do ABC, Av. dos Estados 5001, Bl A, Torre 3, Lab 503-3, Santo André, São Paulo, 09210-170, Brazil
| | - Giovana Radomille Tofoli
- Faculdade São Leopoldo Mandic, Instituto de Pesquisa São Leopoldo Mandic, Rua José Rocha Junqueira 13, Campinas, São Paulo, 13045-75, Brazil.
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14
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Collaço RDC, Hyslop S, Rocha T, Dorce VAC, Rowan EG, Antunes E. Neurotoxicity of Tityus bahiensis (brown scorpion) venom in sympathetic vas deferens preparations and neuronal cells. Arch Toxicol 2020; 94:3315-3327. [PMID: 32548756 PMCID: PMC7415753 DOI: 10.1007/s00204-020-02799-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/28/2020] [Indexed: 01/04/2023]
Abstract
Systemic scorpion envenomation is characterized by massive neurotransmitter release from peripheral nerves mediated primarily by scorpion venoms neurotoxins. Tityus bahiensis is one of the medically most important species in Brazil, but its venom pharmacology, especially regarding to peripheral nervous system, is poorly understood. Here, we evaluated the T. bahiensis venom activity on autonomic (sympathetic) neurotransmission by using a variety of approaches, including vas deferens twitch-tension recordings, electrophysiological measurements (resting membrane potentials, spontaneous excitatory junctional potentials and whole-cell patch-clamp), calcium imaging and histomorphological analysis. Low concentrations of venom (≤ 3 μg/mL) facilitated the electrically stimulated vas deferens contractions without affecting postsynaptic receptors or damaging the smooth muscle cells. Transient TTX-sensitive sustained contractions and resting membrane depolarization were mediated mainly by massive spontaneous ATP release. High venom concentrations (≥ 10 μg/mL) blocked the muscle contractions and induced membrane depolarization. In neuronal cells (ND7-23wt), the venom increased the peak sodium current, modified the current-voltage relationship by left-shifting the Nav-channel activation curve, thereby facilitating the opening of these channels. The venom also caused a time-dependent increase in neuronal calcium influx. These results indicate that the sympathetic hyperstimulation observed in systemic envenomation is presynaptically driven, probably through the interaction of α- and β-toxins with neuronal sodium channels.
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Affiliation(s)
- Rita de Cássia Collaço
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil.
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK.
| | - Stephen Hyslop
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Thalita Rocha
- São Francisco University (USF), Bragança Paulista, SP, Brazil
| | - Valquiria A C Dorce
- Laboratory of Pharmacology, Division for Scientific Development, Butantan Institute, São Paulo, SP, Brazil
| | - Edward G Rowan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Edson Antunes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
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15
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Cerqueira M, Pereira R, Nunes de Mesquita G, Rocha T, Galvao de Moura Filho A. Influence of Blood Flow Restriction Level on Muscle Fatigue during an Intermittent Isometric Exercise Taken to Failure. Muscles Ligaments Tendons J 2020. [DOI: 10.32098/mltj.03.2020.08] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- M.S. Cerqueira
- Department of Physical Therapy, Federal University of Pernambuco, Pernambuco, Brazil
| | - R. Pereira
- Department of Biological Sciences, State University of Southwest Bahia, Bahia, Brazil
| | - G. Nunes de Mesquita
- Department of Physical Therapy, Federal University of Pernambuco, Pernambuco, Brazil
| | - T. Rocha
- Department of Physical Therapy, Federal University of Pernambuco, Pernambuco, Brazil
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16
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Gonçalves JM, Rocha T, Mestre NC, Fonseca TG, Bebianno MJ. Assessing cadmium-based quantum dots effect on the gonads of the marine mussel Mytilus galloprovincialis. Mar Environ Res 2020; 156:104904. [PMID: 32174334 DOI: 10.1016/j.marenvres.2020.104904] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/21/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
This study assesses the sex-specific effects induced by CdTe QDs, on the marine mussel Mytilus galloprovincialis in comparison to its dissolved counterpart. A 14 days exposure to CdTe QDs and dissolved Cd was conducted (10 μg Cd L-1), analysing Cd accumulation, oxidative stress, biotransformation, metallothionein and oxidative damage in the gonads. Both Cd forms caused significant antioxidant alterations, whereby QDs were more pro-oxidant, leading to oxidative damage, being females more affected. Overall, biochemical impairments on gonads of M. galloprovincialis demonstrate that the reproductive toxicity induced by CdTe QDs in mussels are sex-dependent and mediated by oxidative stress and lipid peroxidation. It is crucial to acknowledge how gametes are affected by metal-based nanoparticles, such as Cd-based QDs. As well as understanding the potential changes they may undergo at the cellular level during gametogenesis, embryogenesis and larval development potentially leading to serious impacts on population sustainability and ecosystem health.
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Affiliation(s)
- J M Gonçalves
- CIMA, Centre of Marine and Environmental Research, University of Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - T Rocha
- CIMA, Centre of Marine and Environmental Research, University of Algarve, Campus de Gambelas, 8000-139, Faro, Portugal; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - N C Mestre
- CIMA, Centre of Marine and Environmental Research, University of Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - T G Fonseca
- CIMA, Centre of Marine and Environmental Research, University of Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - M J Bebianno
- CIMA, Centre of Marine and Environmental Research, University of Algarve, Campus de Gambelas, 8000-139, Faro, Portugal.
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17
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Vigerelli H, Sciani JM, Pereira PMC, Lavezo AA, Silva ACR, Collaço RCO, Rocha T, Bueno TC, Pimenta DC. Bufotenine, a tryptophan-derived alkaloid, suppresses the symptoms and increases the survival rate of rabies-infected mice: the development of a pharmacological approach for rabies treatment. J Venom Anim Toxins Incl Trop Dis 2020; 26:e20190050. [PMID: 32071597 PMCID: PMC6996410 DOI: 10.1590/1678-9199-jvatitd-2019-0050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 12/19/2019] [Indexed: 12/25/2022] Open
Abstract
Background: Between 40,000-70,000 people die yearly of rabies, an incurable disease.
Besides post-bite vaccination, no treatment is available for it. Methods: First, virus dilution for antiviral effects in mice was determined. Then,
animals were treated as follows: control (NaCl 250 µL/animal/day);
bufotenine (0.63, 1.05 and 2.1 mg in 250 µL of NaCl/animal/day); rabies
(10-6,82CVS dilution); and test (10-6,82 CVS
dilution and bufotenine, in the above-mentioned doses). Animals were
observed daily for 21 days or until the 3rd stage of rabies
infection. Twitch-tension and liposome studies were applied to understand
the possible interaction of bufotenine with receptors, particularly
acetylcholine. Results: Bufotenine was able to increase the survival rate of intracerebrally
virus-infected mice from 15 to 40%. Bufotenine did not seem to interfere
with the acetylcholine response in the skeletal muscle, indicating that its
mechanism of action is not blocking the virus entrance due to nAChR
antagonism. By analyzing liposomes, we could observe that bufotenine did not
passively penetrates cell membranes, indicating the necessity of
complementary structures to cell penetration. Conclusions: Bufotenine is a promising candidate for drug development. After further
chemical modification, it might be possible to dissociate minor side
effects, increase efficiency, efficacy and pharmacokinetics, yielding a true
anti-rabies drug.
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Affiliation(s)
- Hugo Vigerelli
- Laboratory of Biochemistry and Biophysics, Butantan Institute, São Paulo, SP, Brazil
| | - Juliana M Sciani
- Laboratory of Biochemistry and Biophysics, Butantan Institute, São Paulo, SP, Brazil.,Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | - Patricia M C Pereira
- Laboratory of Biochemistry and Biophysics, Butantan Institute, São Paulo, SP, Brazil
| | - Aline A Lavezo
- Laboratory of Biological Quality Control in vivo, Butantan Institute, São Paulo, SP, Brazil
| | - Andrea C R Silva
- Laboratory of Rabies Diagnostic, Serology, Pasteur Institute, São Paulo, Brazil
| | - Rita C O Collaço
- Department of Pharmacology, State University of Campinas (Unicamp), Campinas, SP, Brazil
| | - Thalita Rocha
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | - Thais C Bueno
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | - Daniel C Pimenta
- Laboratory of Biochemistry and Biophysics, Butantan Institute, São Paulo, SP, Brazil
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Nunes D, Rocha T, Traver V, Teixeira C, Ruano M, Paredes S, Carvalho P, Henriques J. Latent states extraction through Kalman Filter for the prediction of heart failure decompensation events. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:3947-3950. [PMID: 31946736 DOI: 10.1109/embc.2019.8857591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Cardiac function deterioration of heart failure patients is frequently manifested by the occurrence of decompensation events. One relevant step to adequately prevent cardiovascular status degradation is to predict decompensation episodes in order to allow preventive medical interventions.In this paper we introduce a methodology with the goal of finding onsets of worsening progressions from multiple physiological parameters which may have predictive value in decompensation events. The best performance was obtained for the model composed by only two features using a telemonitoring dataset (myHeart) with 41 patients. Results were achieved by applying leave-one-subject-out validation and correspond to a geometric mean of 83.67%. The obtained performance suggests that the methodology has the potential to be used in decision support solutions and assist in the prevention of this public health burden.
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Cruz Pereira PM, De Barros HV, Sciani JM, De Cássia Collaço R, Rocha T, Pimenta DC. Prospection of the antiviral effect of bufotenine on the rabies virus infection inhibition. Toxicon 2019. [DOI: 10.1016/j.toxicon.2019.06.156] [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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Bonafé GA, Dos Santos JS, Ziegler JV, Umezawa K, Ribeiro ML, Rocha T, Ortega MM. Growth Inhibitory Effects of Dipotassium Glycyrrhizinate in Glioblastoma Cell Lines by Targeting MicroRNAs Through the NF-κB Signaling Pathway. Front Cell Neurosci 2019; 13:216. [PMID: 31191251 PMCID: PMC6546822 DOI: 10.3389/fncel.2019.00216] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/29/2019] [Indexed: 12/14/2022] Open
Abstract
It has been shown that nuclear factor kappa-B (NF-κB) is constitutively activated in glioblastoma (GBM), suggesting that the pathway could be a therapeutic target. Glycyrrhetic acid (GA), a compound isolated from licorice (Glycyrrhiza glabra), has been shown to decrease cell viability and increases apoptosis in human cancer cell lines by NF-κB signaling pathway suppression. Dipotassium glycyrrhizinate (DPG), a dipotassium salt of GA, has anti-inflammatory properties without toxicity. The current study examined the effectiveness of DPG as an anti-tumor in U87MG and T98G GBM cell lines. Additionally, we assessed DPG as a candidate for combinational therapy in GBM with temozolomide (TMZ). Our results demonstrated that the viability of U87MG and T98G cells significantly decreased in a time- and dose-dependent manner after DPG treatment, and the apoptotic ratio of DPG-treated groups was significantly higher than that of control groups. In addition, DPG in combination with TMZ revealed synergistic effects. Furthermore, the expression of NF-κB-luciferase-reporter in transfected GBM cell lines was remarkably reduced after DPG exposure by up-regulating miR16 and miR146a, which down-regulate its target genes, IRAK2 and TRAF6. A reduced neuro-sphere formation was also observed after DPG in both GBM cells. In conclusion, DPG presented anti-tumoral effect on GBM cell lines through a decrease on proliferation and an increase on apoptosis. In addition, our data also suggest that DPG anti-tumoral effect is related to NF-κB suppression, where IRAK2- and TRAF6-mediating miR16 and miR146a, respectively, might be a potential therapeutic target of DPG.
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Affiliation(s)
- Gabriel Alves Bonafé
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
| | - Jéssica Silva Dos Santos
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
| | - Jussara Vaz Ziegler
- Multidisciplinary Research Laboratory, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
| | - Kazuo Umezawa
- Department of Molecular Target Medicine, School of Medicine, Aichi Medical University, Nagakute, Japan
| | - Marcelo Lima Ribeiro
- Clinical Pharmacology and Gastroenterology Unit, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
| | - Thalita Rocha
- Multidisciplinary Research Laboratory, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
| | - Manoela Marques Ortega
- Laboratory of Cell and Molecular Tumor Biology and Bioactive Compounds, Post Graduate Program in Health Science, Universidade São Francisco (USF), Bragança Paulista, Brazil
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Mora AG, Furquim SR, Tartarotti SP, Andrade DR, Janussi SC, Krikorian K, Rocha T, Franco-Penteado CF, Priolli DG, Priviero FBM, Claudino MA. Progression of micturition dysfunction associated with the development of heart failure in rats: Model of overactive bladder. Life Sci 2019; 226:107-116. [PMID: 30965053 DOI: 10.1016/j.lfs.2019.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 02/26/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 10/27/2022]
Abstract
Heart failure (HF) has a strong association with the development of lower urinary tract symptoms, especially overactive bladder (OAB); although this condition remains poorly investigated. In this study, we assess the aortocaval fistula (ACF) model as a novel experimental model of micturition dysfunction, associated with HF, focused on the molecular and functional studies to evaluate the autonomic nervous system and urinary bladder remodeling. Male rats were submitted to ACF for HF induction. Echocardiography, cystometric, histomorphometry and molecular analysis, as well as concentration-response curves to carbachol and ATP and frequency-response curves to electrical field stimulation (EFS) were evaluated in Sham and HF (4- and 12-weeksendpoint) groups. Compared to SHAM, HF groups exhibited progressive increases in the left ventricle (LV) mass and fractional shortening which indicates cardiac dysfunction, although HF was characterized only after 12 weeks by the reduced ejection fraction. For micturition function, HF groups presented increased non-voiding contractions (NVC) and decreased bladder capacity; however, when comparing HF groups, these urinary parameters were significantly impaired over the weeks (12-weeks). The contractile responses induced by CCh, ATP and EFS were greater in detrusor muscle (DSM) from HF rats. mRNA expression for muscarinic receptors (M2 and M3) was higher in DSM only after 12 weeks of ACF, in addition to MMP9 and TGF-beta. Histomorphometric revealed increased urothelium thickness in both HF groups, whereas DSM thickness occurred only after 12 weeks. Thus, the ACF model induced cardiac dyfunction with progressive micturition dysfunction over the weeks, characterized by increased DSM contractile mechanisms as well as extracellular matrix remodeling in the urinary bladder, representing a useful tool to evaluate the OAB associated with HF.
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Affiliation(s)
- A G Mora
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - S R Furquim
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - S P Tartarotti
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - D R Andrade
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - S C Janussi
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - K Krikorian
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - T Rocha
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - C F Franco-Penteado
- Hematology and Hemotherapy Center, University of Campinas, Campinas, SP, Brazil; Faculty of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - D G Priolli
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil
| | - F B M Priviero
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - M A Claudino
- Laboratory of Multidisciplinary Research, São Francisco University Medical School, Bragança Paulista, SP, Brazil.
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22
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Mendes JA, Ribeiro MC, Reis Filho GJMV, Rocha T, Muscará MN, Costa SKP, Ferreira HHA. Hydrogen sulfide inhibits apoptosis and protects the bronchial epithelium in an allergic inflammation mice model. Int Immunopharmacol 2019; 73:435-441. [PMID: 31154288 DOI: 10.1016/j.intimp.2019.05.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 04/30/2019] [Accepted: 05/22/2019] [Indexed: 01/24/2023]
Abstract
Studies suggest that hydrogen sulfide (H2S) plays a relevant and beneficial role in the pathophysiology of pulmonary allergic diseases, such as asthma. These diseases may be triggered by changes in airway epithelium caused by repeated exposure to environmental allergens. This study aimed to investigate whether H2S protects against bronchial epithelium apoptosis in allergic inflammation in mice. The effects of H2S on the production of Th2 cytokines and on the infiltration of pulmonary inflammatory cells were also studied. Female BALB/c mice previously sensitized with ovalbumin (OVA) were treated with H2S donor (sodium hydrosulfide [NaHS]) 30 min prior to OVA challenge. After euthanasia (48 h post challenge), the right lung was homogenized to study apoptosis protein expression and to analyze cytokine levels in lung tissue. The left lobe was fixed in formalin for morphological analysis of lung tissue and verification of apoptosis in situ by the TUNEL assay. Histological results showed that NaHS reduced the airway inflammatory infiltrate and prevented an increase in the IL-4, IL-5 and IL-25 levels caused by OVA challenge. Activation of caspase 3 and FasL in response to the allergen was also fully prevented by NaHS treatment. TUNEL staining showed that the challenge from OVA significantly increased the rate of apoptosis in the bronchiolar epithelium, and that this incremental apoptosis was abolished by NaHS treatment. In conclusion, our results showed that H2S donor has a protective effect against airway epithelium damage caused by an allergic reaction, and represents a potential agent in treating allergic lung disorders, such as asthma.
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Affiliation(s)
- Jackeline A Mendes
- Laboratory of Inflammation Research, São Leopoldo Mandic Institute and Research Center, Campinas, Sao Paulo, Brazil
| | - Matheus C Ribeiro
- Laboratory of Inflammation Research, São Leopoldo Mandic Institute and Research Center, Campinas, Sao Paulo, Brazil
| | - Gustavo J M V Reis Filho
- Laboratory of Inflammation Research, São Leopoldo Mandic Institute and Research Center, Campinas, Sao Paulo, Brazil
| | - Thalita Rocha
- Multidisciplinary Res Lab, San Francisco University, Braganca Paulista, SP, Brazil
| | - Marcelo N Muscará
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, SP, Brazil
| | - Soraia K P Costa
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, SP, Brazil
| | - Heloisa H A Ferreira
- Laboratory of Inflammation Research, São Leopoldo Mandic Institute and Research Center, Campinas, Sao Paulo, Brazil..
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23
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Nascimento LS, Tedesco LM, Araujo NS, Priviero FBM, Claudino MA, Priolli DG, Rocha T. Molecular evidence of tissue remodeling in an animal model of heart failure. Histol Histopathol 2019; 34:1345-1354. [PMID: 31099017 DOI: 10.14670/hh-18-128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Heart failure (HF) is the final common pathway of many cardiovascular diseases. Metalloproteinases and their inhibitors, such as MMP9 and TIMP-1, assist in maintaining the extracellular matrix, leading to tissue remodeling observed after HF. Previous studies have shown that L-Arginine (LA) appears to have beneficial effects for the treatment of HF, contributing to vasodilation, the reestablishment of the endothelial function and an increase in muscle contractile force. This study analyzed heart tissue remodeling in an animal model of HF induced by aortocaval fistula (ACF) and submitted to LA treatment. After 4 weeks of ACF, animals were treated with LA for 4 weeks (SHAM-LA, HF-LA) or for 8-12 weeks with saline (SHAM, HF8, HF12). Rats were euthanized and the hearts removed for histological processing. The samples were stained with Hematoxylin-Eosin (HE), Masson's Thichome (MT), or submitted to immunohistochemistry (IHC) for MMP9 and TIMP-1. Light microscopy analysis showed cardiac striated muscle without fibrosis in all experimental groups. Immunostaining of MMP9 and TIMP-1 were positive for all experimental groups. LA administration significatively reduced MMP9 content after HF. These data indicate molecular changes in metalloproteinases expression prior to tissue remodeling and point out LA as an adjuvant therapy to pharmacological treatment of patients with HF.
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Affiliation(s)
- Lais Silva Nascimento
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | - Larissa Martins Tedesco
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | - Natiele Silva Araujo
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | | | - Mario Angelo Claudino
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil
| | | | - Thalita Rocha
- Multidisciplinary Research Laboratory, São Francisco University, Bragança Paulista, SP, Brazil.
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Rocha T, Leite CS, Tenis DG, Ziegler J, Priolli DG. Glycyrrhizinate Dipotassium (DPG) Effects over Skin Wound Healing. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.lb167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thalita Rocha
- Multidisciplinary Research LaboratorySan Francisco UniversityBragança PaulistaBrazil
| | - Camila Silva Leite
- Multidisciplinary Research LaboratorySan Francisco UniversityBragança PaulistaBrazil
| | - Danielle Gatti Tenis
- Multidisciplinary Research LaboratorySan Francisco UniversityBragança PaulistaBrazil
| | - Jussara Ziegler
- Multidisciplinary Research LaboratorySan Francisco UniversityBragança PaulistaBrazil
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Nunes D, Leal A, Rocha T, Traver V, Teixeira C, Ruano M, Paredes S, Carvalho P, Henriques J. Risk Prediction of Heart Failure Decompensation Events in Multiparametric Feature Spaces. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2018:4030-4033. [PMID: 30441241 DOI: 10.1109/embc.2018.8513096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Cardiac function deterioration of heart failure patients is frequently manifested by the occurrence of decompensation events. One relevant step to adequately prevent cardiovascular status degradation is to predict decompensation episodes in order to allow preventive medical interventions. In this paper we introduce a methodology with the goal of finding relevant feature spaces from multiple physiological parameters which may have predictive value in decompensation events. The best performance was obtained for the feature space comprising the following features: mean weight, standard deviation of the blood pressure and mean of extra-thoracic impedance in a time window of 20 days. Results were achieved by applying leave-one-out validation and correspond to a geometric mean of 88.32%. The obtained performance suggests that the methodology has the potential to be used in decision support solutions and assist in the prevention of this public health burden.
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Rostelato-Ferreira S, Rocha T, Dal Belo CA, Rodrigues-Simioni L, Ownby CL, Cruz-Hofling MA. Methanolic extract of Rhinella schneideri (cururú toad) poison crude cause ultrastructural changes in nerve terminals of mouse phrenic nerve-diaphragm preparations. REV BIOL TROP 2018. [DOI: 10.15517/rbt.v66i3.30362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Rhinella schneideri (or Bufo paracnemis), popularly known in Brazil as cururu toad, is also found in other countries in South America. The cardiovascular effects of this poison are largely known and recently was shown that it is capable to affect the neuromuscular junction on avian and mice isolated preparation. In this work, we used transmission electron microscopy to investigate the ultrastructure of the motor nerve terminal and postsynaptic junctional folds of phrenic nerve-hemidiaphragm preparations incubated for either 5 or 60 min with the methanolic extract of R. schneideri (50 µg/mL). In addition, the status of the acetylcholine receptors (AChR) was examined by TRITC-α-bungarotoxin immunofluorescence location at the endplate membrane. The results show that 5 min of incubation with the gland secretion extract significantly decreased (32 %) the number of synaptic vesicles into the motor nerve terminal, but did not decrease the electron density on the top of the junctional folds where nicotinic receptors are concentrated; however, 60 min of incubation led to significant nerve terminal reloading in synaptic vesicles whereas the AChR immunoreactivity was not as marked as in control and after 5 min incubation. Muscle fibers were well-preserved but intramuscular motor axons were not. The findings corroborated pharmacological data since the decrease in the number of synaptic vesicles (5 min) followed by recovery (60 min) is in accordance with the transient increase of MEPPs frequency meaning increased neurotransmitter release. These data support the predominant presynaptic mode of action of the R. schneideri, but do not exclude the possibility of a secondary postsynaptic action depending on the time the preparation is exposed to poison.
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Cereda CMS, Mecatti DS, Papini JZB, Bueno DV, Franz-Montan M, Rocha T, Pedrazzoli Júnior J, de Paula E, de Araújo DR, Grillo R, Fraceto LF, Calafatti SA, Tofoli GR. Bupivacaine in alginate and chitosan nanoparticles: an in vivo evaluation of efficacy, pharmacokinetics, and local toxicity. J Pain Res 2018; 11:683-691. [PMID: 29670395 PMCID: PMC5896646 DOI: 10.2147/jpr.s158695] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objective This study reports a preclinical evaluation of an alginate/chitosan nanoparticle formulation containing NovaBupi®, a racemic bupivacaine (BVC) containing 25% dextrobupivacaine and 75% levobupivacaine. Methods New Zealand White rabbits (n=6) received intraoral or intrathecal injections of BVC 0.5% or BVC 0.5%-loaded alginate–chitosan nanoparticles (BVCALG). BVC plasma levels and pharmacokinetic parameters were determined in blood samples of these rabbits. An infraorbital nerve blockade was performed in male Wistar rats (n=7) with the same formulations and the vehicle (NPALG). Histological evaluation of local toxicity after 6 hours and 24 hours of the treatments was performed in rats’ (n=6) oral tissues. Results No statistically significant difference was observed between plasma concentrations and pharmacokinetic parameters (p>0.05) after intraoral injections. However, after intrathecal injection BVCALG changed approximately three times the values of volume of distribution and area under the curve (AUC0–t; p<0.05). The total analgesic effect of BVC after infraorbital nerve blockade was improved by 1.4-fold (p<0.001) with BVCALG. BVC and BVCALG did not induce significant local inflammatory reaction. Conclusion The encapsulation of BVC prolongs the local anesthetic effect after infraorbital nerve blockade and altered the pharmacokinetics after intrathecal injection.
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Affiliation(s)
| | | | | | | | - Michelle Franz-Montan
- Department of Physiological Sciences, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Thalita Rocha
- UNIFAG, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | | | - Eneida de Paula
- Department of Biochemistry and Tissue Biology, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Renato Grillo
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, São Paulo, Brazil
| | - Leonardo Fernandes Fraceto
- Department of Environmental Engineering, São Paulo State University (UNESP), Sorocaba, São Paulo, Brazil
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28
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Arredondo J, Strathdee SA, Cepeda J, Abramovitz D, Artamonova I, Clairgue E, Bustamante E, Mittal ML, Rocha T, Bañuelos A, Olivarria HO, Morales M, Rangel G, Magis C, Beletsky L. Measuring improvement in knowledge of drug policy reforms following a police education program in Tijuana, Mexico. Harm Reduct J 2017; 14:72. [PMID: 29117858 PMCID: PMC5678566 DOI: 10.1186/s12954-017-0198-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/20/2017] [Indexed: 01/07/2023] Open
Abstract
Background Mexico’s 2009 “narcomenudeo reform” decriminalized small amounts of drugs, shifting some drug law enforcement to the states and mandating drug treatment diversion instead of incarceration. Data from Tijuana suggested limited implementation of this harm reduction-oriented policy. We studied whether a police education program (PEP) improved officers’ drug and syringe policy knowledge, and aimed to identify participant characteristics associated with improvement of drug policy knowledge. Methods Pre- and post-training surveys were self-administered by municipal police officers to measure legal knowledge. Training impact was assessed through matched paired nominal data using McNemar’s tests. Multivariable logistic regression was used to identify predictors of improved legal knowledge, as measured by officers’ ability to identify conceptual legal provisions related to syringe possession and thresholds of drugs covered under the reform. Results Of 1750 respondents comparing pre- versus post training, officers reported significant improvement (p < 0.001) in their technical understanding of syringe possession (56 to 91%) and drug amounts decriminalized, including marijuana (9 to 52%), heroin (8 to 71%), and methamphetamine (7 to 70%). The training was associated with even greater success in improving conceptual legal knowledge for syringe possession (67 to 96%) (p < 0.001), marijuana (16 to 91%), heroin (11 to 91%), and methamphetamine (11 to 89%). In multivariable modeling, those with at least a high school education were more likely to exhibit improvement of conceptual legal knowledge of syringe possession (adjusted odds ratio [aOR] 2.6, 95% CI 1.4–3.2) and decriminalization for heroin (aOR 2.7, 95% CI 1.3–4.3), methamphetamine (aOR 2.2, 95% CI 1.4–3.2), and marijuana (aOR 2.5, 95% CI 1.6–4). Conclusions Drug policy reform is often necessary, but not sufficient to achieve public health goals because of gaps in translating formal laws to policing practice. To close such gaps, PEP initiatives bundling occupational safety information with relevant legal content demonstrate clear promise. Our findings underscore additional efforts needed to raise technical knowledge of the law among personnel tasked with its enforcement. Police professionalization, including minimum educational standards, appear critical for aligning policing with harm reduction goals.
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Affiliation(s)
- J Arredondo
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA. .,San Diego State University, San Diego, CA, USA.
| | - S A Strathdee
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - J Cepeda
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - D Abramovitz
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - I Artamonova
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - E Clairgue
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - E Bustamante
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA
| | - M L Mittal
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,Facultad de Medicina, Universidad Xochicalco, Tijuana, Mexico
| | - T Rocha
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,San Diego State University, San Diego, CA, USA
| | - A Bañuelos
- Secretaría de Seguridad Pública Municipal, Dirección de Planeación y Proyectos Estratégicos, Tijuana, Mexico
| | - H O Olivarria
- Secretaría de Seguridad Pública Municipal, Instituto de Capacitación y Adiestramiento Profesional (ICAP), Tijuana, Mexico
| | - M Morales
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,San Diego State University, San Diego, CA, USA
| | - G Rangel
- Comisión de Salud Fronteriza, México-Estados Unidos, Tijuana, Mexico
| | - C Magis
- Centro Nacional para la Prevención y el Control del VIH y el SIDA (Censida), Mexico City, Mexico
| | - L Beletsky
- Division of Global Public Health, UC San Diego - School of Medicine, Third Floor, CRSF, La Jolla, San Diego, USA.,School of Law and Bouvé College of Health Sciences, Northeastern University, Boston, USA
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Hertz J, Fu Y, Flanagan B, Vissoci J, Limkakeng A, Staton C, Rocha T. 197 Geographic Distribution of Diagnostic Testing for Acute Coronary Syndrome in Brazil. Ann Emerg Med 2017. [DOI: 10.1016/j.annemergmed.2017.07.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mendes D, Paredes S, Rocha T, Carvalho P, Henriques J, Morais J. An interpretable data-driven approach for rules construction: Application to cardiovascular risk assessment. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2017:2646-2649. [PMID: 29060443 DOI: 10.1109/embc.2017.8037401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of models able to produce an understandable decision by the clinicians is of great importance to support their decision. Therefore, the research of methodologies able to extract useful knowledge from existing datasets, as well as to integrate this knowledge into the current clinical evidence, is a key aspect in the enhancement of the clinical decision. This work focuses on the development of interpretable models to assess the patient's condition based on supervised clustering theories, enabling the discovery of a set of features that best represents that condition. At the same time, the technique is supported on a structure that enables the formulation of simple and interpretable rules. Despite its general applicability, the proposed methodology is applied to coronary artery disease (CAD), particularly, in the risk of death assessment (30 days after the admission) of patients that have been admitted to the emergency unit. The validation is performed using a real dataset with Acute Coronary Syndromes, provided by the Portuguese Society of Cardiology. While the methodology produces simple and interpretable rules, the performance achieves an improvement of 7% in relation to geometric mean, when compared with GRACE model (commonly used in Portugal).
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Henriques J, Carvalho P, Rocha T, Paredes S, Cabiddu R, Trimer R, Mendes R, Borghi-Silva A, Kaminsky L, Ashley E, Arena R, Myers J. A non-exercise based V02max prediction using FRIEND dataset with a neural network. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2017:4203-4206. [PMID: 29060824 DOI: 10.1109/embc.2017.8037783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The main goal of this work is the development of models, based on computational intelligence techniques, in particular neural networks, to predict the maximum oxygen consumption value. While the maximum oxygen consumption is a direct mark of the cardiorespiratory fitness, several studies have also confirmed it also as a powerful predictor of risk for adverse outcomes, such as hypertension, obesity, and diabetes. Therefore, the existence of simpler and accurate models, establishing an alternative to standard cardiopulmonary exercise tests, with the potential to be employed in the stratification of the general population in daily clinical practice, would be of major importance. In the current study, different models were implemented and compared: 1) the traditional Wasserman/Hansen equation; 2) linear regression and; 3) non-linear neural networks. Their performance was evaluated based on the "FRIEND - Fitness Registry and the Importance of Exercise: The National Data Base" [1] being, in the present study, a subset of 12262 individuals employed. The accuracy of the models was performed through the computation of sensitivity and specificity values. The results show the superiority of neural networks in the prediction of maximum oxygen consumption.
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Collaço RDCO, Randazzo-Moura P, Tamascia ML, da Silva IRF, Rocha T, Cogo JC, Hyslop S, Sanny CG, Rodrigues-Simioni L. Erratum to "Bothrops fonsecai snake venom activities and cross-reactivity with commercial bothropic antivenom" [Comp. Biochem. Physiol. C 191 (2017) 86-100]. Comp Biochem Physiol C Toxicol Pharmacol 2017; 196:53. [PMID: 28268104 DOI: 10.1016/j.cbpc.2017.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Rita de Cássia O Collaço
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil
| | - Priscila Randazzo-Moura
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil; Laboratório de Farmacologia, Faculdade de Ciências Médicas e da Saúde, Pontífica Universidade Católica de São Paulo (PUCSP), Praça Dr. José Ermirio de Moraes, 290, 18030-095 Sorocaba, SP, Brazil.
| | - Mariana L Tamascia
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil
| | - Igor Rapp F da Silva
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil
| | - Thalita Rocha
- Laboratório Multidisciplinar de Pesquisa, Universidade São Francisco (USF), Avenida São Francisco de Assis, 281, Jardim São José, 12916-900 Bragança Paulista, SP, Brazil
| | - José C Cogo
- Serpentário do Centro de Estudos da Natureza, Universidade do Vale do Paraíba (UNIVAP), Avenida Shishima Hifumi, 2911, Urbanova, 12244-000 São José dos Campos, SP, Brazil
| | - Stephen Hyslop
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil
| | - Charles G Sanny
- Department of Biochemistry and Microbiology, Center for Health Sciences, Oklahoma State University (OSU), 1111 W. 17th Street, 74107 Tulsa, OK, USA
| | - Léa Rodrigues-Simioni
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887 Campinas, SP, Brazil
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Rocha T, Castro MA, Guarda-Nardini L, Manfredini D. Subjects with temporomandibular joint disc displacement do not feature any peculiar changes in body posture. J Oral Rehabil 2017; 44:81-88. [DOI: 10.1111/joor.12470] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2016] [Indexed: 12/01/2022]
Affiliation(s)
- T. Rocha
- Escola Superior De Tecnologia de Saude; University of Coimbra; Coimbra Portugal
| | - M. A. Castro
- Escola Superior De Tecnologia de Saude; University of Coimbra; Coimbra Portugal
| | - L. Guarda-Nardini
- Section of Dentistry and Maxillofacial Surgery; Hospital of Treviso; Treviso Italy
| | - D. Manfredini
- School of Dentistry; University of Padova; Padova Italy
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Fonseca TG, Morais MB, Rocha T, Abessa DMS, Aureliano M, Bebianno MJ. Ecotoxicological assessment of the anticancer drug cisplatin in the polychaete Nereis diversicolor. Sci Total Environ 2017; 575:162-172. [PMID: 27744150 DOI: 10.1016/j.scitotenv.2016.09.185] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/22/2016] [Accepted: 09/22/2016] [Indexed: 02/07/2023]
Abstract
Anticancer drugs are designed to inhibit tumor cell proliferation by interacting with DNA and altering cellular growth factors. When released into the waterbodies of municipal and hospital effluents these pharmaceutical compounds may pose a risk to non-target aquatic organisms, due to their mode of action (cytotoxic, genotoxic, mutagenic and teratogenic). The present study aimed to assess the ecotoxicological potential of the alkylating agent cisplatin (CisPt) to the polychaete Nereis diversicolor, at a range of relevant environmental concentrations (i.e. 0.1, 10 and 100ngPtL-1). Behavioural impairment (burrowing kinetic impairment), ion pump effects (SR Ca2+-ATPase), neurotoxicity (AChE activity), oxidative stress (SOD, CAT and GPXs activities), metal exposure (metallothionein-like proteins - MTLP), biotransformation (GST), oxidative damage (LPO) and genotoxicity (DNA damage), were selected as endpoints to evaluate the sublethal responses of the ragworms after 14-days of exposure in a water-sediment system. Significant burrowing impairment occurred in worms exposed to the highest CisPt concentration (100ngPtL-1) along with neurotoxic effects. The activity of antioxidant enzymes (SOD, CAT) and second phase biotransformation enzyme (GST) was inhibited but such effects were compensated by MTLP induction. Furthermore, LPO levels also increased. Results showed that the mode of action of cisplatin may pose a risk to this aquatic species even at the range of ngL-1.
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Affiliation(s)
- T G Fonseca
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal; NEPEA, Núcleo de Estudos em Poluição e Ecotoxicologia. Aquática, São Paulo State University - UNESP, Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique, s/n, 11330-900, São Vicente, SP, Brazil
| | - M B Morais
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal
| | - T Rocha
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal
| | - D M S Abessa
- NEPEA, Núcleo de Estudos em Poluição e Ecotoxicologia. Aquática, São Paulo State University - UNESP, Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique, s/n, 11330-900, São Vicente, SP, Brazil
| | - M Aureliano
- CCMar, Centre of Marine Sciences, University of Algarve, Campus de Gambelas, 8005-135 Faro, Portugal
| | - M J Bebianno
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal.
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Collaço RDCO, Randazzo-Moura P, Tamascia ML, da Silva IRF, Rocha T, Cogo JC, Hyslop S, Sanny CG, Rodrigues-Simioni L. Bothrops fonsecai snake venom activities and cross-reactivity with commercial bothropic venom. Comp Biochem Physiol C Toxicol Pharmacol 2017; 191:86-100. [PMID: 27590117 DOI: 10.1016/j.cbpc.2016.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 03/11/2016] [Revised: 07/05/2016] [Accepted: 08/26/2016] [Indexed: 10/21/2022]
Abstract
In this work, we examined some biochemical and biological activities of Bothrops fonsecai venom, a pitviper endemic to southeastern Brazil, and assessed their neutralization by commercial bothropic antivenom (CAv). Cross-reactivity of venom with CAv was also assessed by immunoblotting and size-exclusion high performance chromatography (SE-HPLC). Bothrops fonsecai venom had PLA2, proteolytic and esterase activities that were neutralized to varying extents by venom:antivenom ratios of 5:1 and 5:2 (PLA2 and esterase activities) or not significantly by either venom:antivenom ratio (proteolytic activity). The minimum hemorrhagic dose (69.2μg) was totally neutralized by both ratios. Clotting time in rat citrated plasma was 33±10.5s (mean±SD; n=5) and was completely neutralized by a 5:2 ratio. Edema formation was dose-dependent (1-30μg/site) and significantly inhibited by both ratios. Venom (10-300μg/mL) caused neuromuscular blockade in extensor digitorum longus preparations; this blockade was inhibited best by a 5:2 ratio. Venom caused myonecrosis and creatine kinase release in vivo (gastrocnemius muscle) and in vitro (extensor digitorum longus) that was effectively neutralized by both venom:antivenom ratios. Immunoblotting showed that venom components of ~25-100kDa interacted with CAv. SE-HPLC profiles for venom incubated with CAv or specific anti-B. fonsecai antivenom raised in rabbits (SAv) indicated that CAv had a higher binding capacity than SAv, whereas SAv had higher affinity than CAv. These findings indicate that B. fonsecai venom contains various activities that are neutralized to different extents by CAv and suggest that CAv could be used to treat envenoming by B. fonsecai.
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Affiliation(s)
- Rita de Cássia O Collaço
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
| | - Priscila Randazzo-Moura
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil; Laboratório de Farmacologia, Faculdade de Ciências Médicas e da Saúde, Pontífica Universidade Católica de São Paulo (PUCSP), Praça Dr. José Ermirio de Moraes, 290, 18030-095, Sorocaba, SP, Brazil.
| | - Mariana L Tamascia
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
| | - Igor Rapp F da Silva
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
| | - Thalita Rocha
- Laboratório Multidisciplinar de Pesquisa, Universidade São Francisco (USF), Avenida São Francisco de Assis, 281, Jardim São José, 12916-900, Bragança Paulista, SP, Brazil
| | - José C Cogo
- Serpentário do Centro de Estudos da Natureza, Universidade do Vale do Paraíba (UNIVAP), Avenida Shishima Hifumi, 2911, Urbanova, 12244-000, São José dos Campos, SP, Brazil
| | - Stephen Hyslop
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
| | - Charles G Sanny
- Department of Biochemistry and Microbiology, Center for Health Sciences, Oklahoma State University (OSU), 1111 W. 17th Street, 74107, Tulsa, OK, USA
| | - Léa Rodrigues-Simioni
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
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Rocha T. Contagious equine metritis in Portugal: A retrospective report of the first outbreak in the country and recent contagious equine metritis test results. Open Vet J 2016; 6:263-267. [PMID: 28116252 PMCID: PMC5223286 DOI: 10.4314/ovj.v6i3.18] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 12/14/2016] [Indexed: 11/17/2022] Open
Abstract
Contagious equine metritis (CEM), a highly contagious bacterial venereal infection of equids, caused by Taylorella equigenitalis, is of major international concern, causing short-term infertility in mares. Portugal has a long tradition of horse breeding and exportation and until recently was considered CEM-free. However, in 2008, T. equigenitalis was isolated at our laboratory from a recently imported stallion and 2 mares from the same stud. Following this first reported outbreak, the Portuguese Veterinary Authority (DGVA) performed mandatory testing on all remaining equines at the stud (n=30), resulting in a further 4 positive animals. All positive animals were treated and subsequently tested negative for T. equigenitalis. Since this outbreak, over 2000 genital swabs from Portuguese horses have been tested at our laboratory, with no further positive animals identified. The available data suggests that this CEM outbreak was an isolated event and we have no further evidence of CEM cases in Portugal, however, an extended and wider epidemiological study would be needed to better evaluate the incidence of the disease in Portuguese horses.
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Affiliation(s)
- T Rocha
- Bacteriology Laboratory, National Reference Laboratory for CEM, Instituto Nacional de Investigação Agrária e Veterinária- INIAV (National Institute of Agrarian and Veterinary Research), Avenida da República, Quinta do Marquês, 2784-157 Oeiras, Portugal
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Melaré R, Floriano RS, Gracia M, Rodrigues-Simioni L, Cruz-Höfling MAD, Rocha T. Ultrastructural aspects of mouse nerve-muscle preparation exposed to Bothrops jararacussu and Bothrops bilineatus venoms and their toxins BthTX-I and Bbil-TX: Unknown myotoxic effects. Microsc Res Tech 2016; 79:1082-1089. [PMID: 27535875 DOI: 10.1002/jemt.22748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 02/15/2016] [Revised: 07/18/2016] [Accepted: 08/02/2016] [Indexed: 11/10/2022]
Abstract
Bites by Bothrops snakes normally induce local pain, haemorrhage, oedema and myonecrosis. Mammalian isolated nerve-muscle preparations exposed to Bothrops venoms and their phospholipase A2 toxins (PLA2 ) can exhibit a neurotoxic pattern as increase in frequency of miniature end-plate potentials (MEPPs) as well as in amplitude of end-plate potentials (EPPs); neuromuscular facilitation followed by complete and irreversible blockade without morphological evidence for muscle damage. In this work, we analysed the ultrastructural damage induced by Bothrops jararacussu and Bothrops bilineatus venoms and their PLA2 toxins (BthTX-I and Bbil-TX) in mouse isolated nerve-phrenic diaphragm preparations (PND). Under transmission electron microscopy (TEM), PND preparations previously exposed to B. jararacussu and B. bilineatus venoms and BthTX-I and Bbil-TX toxins showed hypercontracted and loosed myofilaments; unorganized sarcomeres; clusters of edematous sarcoplasmic reticulum and mitochondria; abnormal chromatin distribution or apoptotic-like nuclei. The principal affected organelles, mitochondria and sarcoplasmic reticulum, were those related to calcium buffering and, resulting in sarcomeres and myofilaments hypercontraction. Schwann cells were also damaged showing edematous axons and mitochondria as well as myelin sheath alteration. These ultrastructural changes caused by both of Bothrops venoms and toxins indicate that the neuromuscular blockade induced by them in vitro can also be associated with nerve and muscle degeneration.
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Affiliation(s)
- Rodolfo Melaré
- Multidisciplinary Research Laboratory, São Francisco University (USF), Av. São Francisco de Assis, 218, Zip Code 12916-900, Bragança Paulista, SP, Brazil
| | - Rafael Stuani Floriano
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, Zip Code 13083-887, Campinas, SP, Brazil
| | - Marta Gracia
- Multidisciplinary Research Laboratory, São Francisco University (USF), Av. São Francisco de Assis, 218, Zip Code 12916-900, Bragança Paulista, SP, Brazil
| | - Léa Rodrigues-Simioni
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, Zip Code 13083-887, Campinas, SP, Brazil
| | - Maria Alice da Cruz-Höfling
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 255, Zip Code 13083-862, Campinas, SP, Brazil
| | - Thalita Rocha
- Multidisciplinary Research Laboratory, São Francisco University (USF), Av. São Francisco de Assis, 218, Zip Code 12916-900, Bragança Paulista, SP, Brazil. .,Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 255, Zip Code 13083-862, Campinas, SP, Brazil.
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Mendes D, Paredes S, Rocha T, Carvalho P, Henriques J, Morais J. Improving clinical models based on knowledge extracted from current datasets: a new approach. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2016:2295-2298. [PMID: 28268786 DOI: 10.1109/embc.2016.7591188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Cardiovascular Diseases (CVD) are the leading cause of death in the world, being prevention recognized to be a key intervention able to contradict this reality. In this context, although there are several models and scores currently used in clinical practice to assess the risk of a new cardiovascular event, they present some limitations. The goal of this paper is to improve the CVD risk prediction taking into account the current models as well as information extracted from real and recent datasets. This approach is based on a decision tree scheme in order to assure the clinical interpretability of the model. An innovative optimization strategy is developed in order to adjust the decision tree thresholds (rule structure is fixed) based on recent clinical datasets. A real dataset collected in the ambit of the National Registry on Acute Coronary Syndromes, Portuguese Society of Cardiology is applied to validate this work. In order to assess the performance of the new approach, the metrics sensitivity, specificity and accuracy are used. This new approach achieves sensitivity, a specificity and an accuracy values of, 80.52%, 74.19% and 77.27% respectively, which represents an improvement of about 26% in relation to the accuracy of the original score.
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Gotardo ÉMF, Caria CREP, de Oliveira CC, Rocha T, Ribeiro ML, Gambero A. Effects of iron supplementation in mice with hypoferremia induced by obesity. Exp Biol Med (Maywood) 2016; 241:2049-2055. [PMID: 27439539 DOI: 10.1177/1535370216660398] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 12/14/2022] Open
Abstract
Iron is an important micronutrient, but it can also act as a dangerous element by interfering with glucose homeostasis and inflammation, two features that are already disturbed in obese subjects. In this work, we study the effects of systemic iron supplementation on metabolic and inflammatory responses in mice with hypoferremia induced by obesity to better characterize whether iron worsens the parameters that are already altered after 24 weeks of a high-fat diet (HFD). Mice were maintained on a control diet or a HFD for 24 weeks and received iron-III polymaltose (50 mg/kg/every 2 days) during the last two weeks. Glucose homeostasis (basal glucose and insulin test tolerance) and systemic and visceral adipose tissue (VAT) inflammation were assessed. Iron levels were measured in serum. The Prussian blue reaction was used in isolated macrophages to detect iron deposition. Iron supplementation resulted in an increased number of VAT macrophages that were positive for Prussian blue staining as well as increased serum iron levels. Systemic hepcidin, leptin, resistin, and monocyte chemoattractant protein-1 (MCP-1) levels were not altered by iron supplementation. Local adipose tissue inflammation was also not made worse by iron supplementation because the levels of hepcidin, MCP-1, leptin, and interleukin (IL)-6 were not altered. In contrast, iron supplementation resulted in an increased production of IL-10 by adipose tissue and VAT macrophages. Leukocytosis and VAT plasminogen activator inhibitor-1 (PAI-1) level were reduced, but insulin resistance was not altered after iron supplementation. In conclusion, systemic iron supplementation in mice with hypoferremia induced by obesity did not worsen inflammatory marker or adipose tissue inflammation or the metabolic status established by obesity. Iron deposition was observed in adipose tissue, mainly in macrophages, suggesting that these cells have mechanisms that promote iron incorporation without increasing the production of inflammatory mediators.
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Affiliation(s)
- Érica Martins Ferreira Gotardo
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
| | - Cintia Rabelo E Paiva Caria
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
| | - Caroline Candida de Oliveira
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
| | - Thalita Rocha
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
| | - Marcelo Lima Ribeiro
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
| | - Alessandra Gambero
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Bragança Paulista 12916-900, SP, Brazil
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Soares ES, Mendonça MCP, Rocha T, Kalapothakis E, da Cruz-Höfling MA. Are Synchronized Changes in Connexin-43 and Caveolin-3 a Bystander Effect in a Phoneutria nigriventer Venom Model of Blood-Brain Barrier Breakdown? J Mol Neurosci 2016; 59:452-63. [PMID: 27067308 DOI: 10.1007/s12031-016-0749-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 02/22/2016] [Accepted: 03/23/2016] [Indexed: 12/17/2022]
Abstract
Upregulation of caveolin-3 (Cav-3) or connexin-43 (Cx43) in astrocytes has been associated with important brain pathologies. We used Phoneutria nigriventer spider venom (PNV), which induces blood-brain barrier breakdown in rats, in order to investigate Cav-3 and Cx43 expression in the cerebellum over critical periods of rat envenomation. By immunofluorescence, western blotting (WB), and transmission electron microscopy (TEM), we assessed changes at 1, 2, 5, 24, and 72 h post-venom. WB showed immediate increases in Cav-3 and Cx43 at 1 h (interval of greatest manifestations of envenomation) that persisted at 5 h (when there were signs of recovery) and peaked at 24 h when no signs of envenomation were detectable. At 2 and 72 h, Cav-3 was downregulated and Cx43 had returned to baseline. PNV markedly intensified Cx43 in molecular, Purkinje and granular layers and Cav-3 in astrocytes whose colocalization to increased GFAP suggests interaction between reactive astrogliosis and Cav-3 upregulation. TEM showed swollen perivascular astrocytic end-feet and synaptic contact alterations that had generally resolved by 72 h. It is uncertain whether such PNV-induced synchronized changes are an interactive effect between Cav-3 and Cx43, or a bystander effect. Evidences indicate that Cav-3 downregulation coupled to Cx43 return to baseline at 72 h when no signs of envenomation were visible, suggesting homeostasis reestablishment. This experimental model is relevant to studying mechanisms involved in neurological disorders associated with Cav-3 overexpression.
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Affiliation(s)
- Edilene Siqueira Soares
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Monique Culturato Padilha Mendonça
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, Brazil.,Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Thalita Rocha
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, Brazil.,Multidisciplinary Research Laboratory, São Francisco University (USF), Bragança Paulista, SP, Brazil
| | - Evanguedes Kalapothakis
- Department of General Biology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Maria Alice da Cruz-Höfling
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, Brazil. .,Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil.
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de Campos Peseto D, Carmona EV, Silva KCD, Guedes FRV, Hummel Filho F, Martinez NP, Pereira JA, Rocha T, Priolli DG. Effects of tretinoin on wound healing in aged skin. Wound Repair Regen 2016; 24:411-7. [DOI: 10.1111/wrr.12417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 01/23/2016] [Indexed: 10/22/2022]
Affiliation(s)
| | | | | | | | | | | | - José Aires Pereira
- Sao Francisco University Medical School; Bragança Paulista Sao Paulo Brazil
| | - Thalita Rocha
- Sao Francisco University Medical School; Bragança Paulista Sao Paulo Brazil
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Garcia NF, Silva CPVD, Ferreira MJ, Oharomari LK, Rocha T, Moraes CD. 7-week aerobic exercise training reduces adipocyte area and improves insulin sensitivity in Wistar rats fed a highly palatable diet. Motriz: rev educ fis 2016. [DOI: 10.1590/s1980-65742016000100002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Nádia F. Garcia
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Brazil
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Tavares M, Paredes S, Rocha T, Carvalho P, Ramos J, Mendes D, Henriques J, Morais J. Expert knowledge integration in the data mining process with application to cardiovascular risk assessment. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:2538-42. [PMID: 26736809 DOI: 10.1109/embc.2015.7318909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The data mining process, when applied to clinical databases, suffers from critical data problems, from noisy acquisitions to missing or incomplete data points. Expert knowledge, in the form of practitioners' experience and clinical guidelines, is already used to manually correct some of these problems, while enhancing expert's confidence in such systems. In this work, we propose the Knowledge-Biased Tree (KB3), a knowledge biased decision tree inducer that is able to exploit IF THEN rules to guide the tree inducing process. The KB3 approach was tested against its unbiased counterpart, the C5.0 algorithm in the cardiovascular risk assessment task. Using a clinical dataset provided by the hospital of Sta Cruz (Lisbon, Portugal) the performance of the proposed algorithm is compared against the unbiased C5.0 and the state of the art risk score used in clinical practice (GRACE risk score).
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Mendes D, Paredes S, Rocha T, Carvalho P, Henriques J, Cabiddu R, Morais J. Assessment of cardiovascular risk based on a data-driven knowledge discovery approach. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:6800-3. [PMID: 26737855 DOI: 10.1109/embc.2015.7319955] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The cardioRisk project addresses the development of personalized risk assessment tools for patients who have been admitted to the hospital with acute myocardial infarction. Although there are models available that assess the short-term risk of death/new events for such patients, these models were established in circumstances that do not take into account the present clinical interventions and, in some cases, the risk factors used by such models are not easily available in clinical practice. The integration of the existing risk tools (applied in the clinician's daily practice) with data-driven knowledge discovery mechanisms based on data routinely collected during hospitalizations, will be a breakthrough in overcoming some of these difficulties. In this context, the development of simple and interpretable models (based on recent datasets), unquestionably will facilitate and will introduce confidence in this integration process. In this work, a simple and interpretable model based on a real dataset is proposed. It consists of a decision tree model structure that uses a reduced set of six binary risk factors. The validation is performed using a recent dataset provided by the Portuguese Society of Cardiology (11113 patients), which originally comprised 77 risk factors. A sensitivity, specificity and accuracy of, respectively, 80.42%, 77.25% and 78.80% were achieved showing the effectiveness of the approach.
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Carregari VC, Dai J, Verano-Braga T, Rocha T, Ponce-Soto LA, Marangoni S, Roepstorff P. Revealing the functional structure of a new PLA2 K49 from Bothriopsis taeniata snake venom employing automatic “de novo” sequencing using CID/HCD/ETD MS/MS analyses. J Proteomics 2016; 131:131-139. [DOI: 10.1016/j.jprot.2015.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 11/24/2022]
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Paredes S, Rocha T, de Carvalho P, Henriques J, Morais J, Ferreira J. Integration of Different Risk Assessment Tools to Improve Stratification of Patients with Coronary Artery Disease. Med Biol Eng Comput 2015. [PMID: 26215518 DOI: 10.1007/s11517-015-1342-3] [Citation(s) in RCA: 3] [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] [Indexed: 10/23/2022]
Abstract
Cardiovascular disease (CVD) causes unaffordable social and health costs that tend to increase as the European population ages. In this context, clinical guidelines recommend the use of risk scores to predict the risk of a cardiovascular disease event. Some useful tools have been developed to predict the risk of occurrence of a cardiovascular disease event (e.g. hospitalization or death). However, these tools present some drawbacks. These problems are addressed through two methodologies: (i) combination of risk assessment tools: fusion of naïve Bayes classifiers complemented with a genetic optimization algorithm and (ii) personalization of risk assessment: subtractive clustering applied to a reduced-dimensional space to create groups of patients. Validation was performed based on two ACS-NSTEMI patient data sets. This work improved the performance in relation to current risk assessment tools, achieving maximum values of sensitivity, specificity, and geometric mean of, respectively, 79.8, 83.8, and 80.9 %. Additionally, it assured clinical interpretability, ability to incorporate of new risk factors, higher capability to deal with missing risk factors and avoiding the selection of a standard CVD risk assessment tool to be applied in the clinical practice.
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Affiliation(s)
- S Paredes
- Computer Science and Systems Engineering Department, Polytechnic Institute of Coimbra (IPC/ISEC), Rua Pedro Nunes, 3030-199, Coimbra, Portugal.
| | - T Rocha
- Computer Science and Systems Engineering Department, Polytechnic Institute of Coimbra (IPC/ISEC), Rua Pedro Nunes, 3030-199, Coimbra, Portugal.
| | - P de Carvalho
- CISUC, Center for Informatics and Systems of University of Coimbra, University of Coimbra, Pólo II, 3030-290, Coimbra, Portugal.
| | - J Henriques
- CISUC, Center for Informatics and Systems of University of Coimbra, University of Coimbra, Pólo II, 3030-290, Coimbra, Portugal.
| | - J Morais
- Cardiology Department, Leiria Hospital Centre, Leiria, Portugal.
| | - J Ferreira
- Cardiology Department, Santa Cruz Hospital, Lisbon, Portugal.
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Madureira P, Pimenta S, Vieira R, Fonseca R, Gonçalves D, Aguiar F, Rocha T, Bernardo A, Bernardes M, Costa L. AB0504 The Role of Corticosteroids in Rheumatoid Arthritis Patients Under Biologic Therapy. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6198] [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: 11/04/2022]
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48
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Madureira P, Pimenta S, Vieira R, Fonseca R, Gonçalves D, Aguiar F, Rocha T, Bernardo A, Bernardes M, Costa L. SAT0130 Effect of Smoking on Therapeutic Response in Rheumatoid Arthritis Patients Under Biologics. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6151] [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: 11/04/2022]
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49
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Fonseca R, Vieira R, Madureira P, Rosa-Gonçalves D, Aguiar F, Rocha T, Bernardo A, Mariz E, Bernardes M, Costa L. THU0225 The Induction of Antinuclear Antibodies in Spondyloarthritis Patients Under Anti-TNF Alpha: A New Outcome Predictor? Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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50
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Fonseca R, Vieira R, Madureira P, Rosa-Gonçalves D, Aguiar F, Rocha T, Bernardo A, Mariz E, Bernardes M, Costa L. FRI0365 Antinuclear Antibodies Induced by Anti-TNF Alpha and its Impact in Clinical Response to Treatment in Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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