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Skin models of cutaneous toxicity,transdermal transport and wound repair

Burns & Trauma 2023年第1期11卷 393-407页

作者： Inês Vilela de Sousa Miguel J.S.Ferreira luís B.Bebiano Sandra Simões ana Filipa Matos Rúben F.pereira Pedro l.Granja i3S-Instituto de Investigação e Inovação em Saúde Universidade do PortoRua Dr.Manuel Pereira da Silva4200-393 PortoPortugal INEB-Instituto de Engenharia Biomédica Universidade do PortoRua do Campo Alegre8234150-180 PortoPortugal ICBAS-Instituto de Ciências Biomédicas Abel Salazar Universidade do PortoRua de Jorge Viterbo Ferreira 2284050-313 PortoPortugal FEUP-Faculdade de Engenharia da Universidade do Porto Rua Dr.Roberto Frias4200-465 PortoPortugal Department of Mechanical Aerospace and Civil EngineeringSchool of EngineeringFaculty of Science and Engineering&Henry Royce InstituteEngineering Building AThe University of ManchesterOxford RoadManchester M139PLUK ISEP-Instituto Superior de Engenharia do Porto Universidade do PortoRua Dr.António Bernardino de Almeida 4314200-072 PortoPortugal iMed.Ulisboa Faculty of PharmacyUniversidade de LisboaAv.Prof.Gama Pinto1649-003 LisboaPortugal Faculty of Pharmacy Universidade de LisboaAv.Prof.Gama Pinto1649-003 LisboaPortugal

Skin is widely used as a drug delivery route due to its easy access and the possibility of using relatively painless methods for the administration of bioactive ***,the barrier properties of the skin,along with its multilayer structure,impose severe restrictions on drug transport and ***,bioengineered models aimed at emulating the skin have been developed not only for optimizing the transdermal transport of different drugs and testing the safety and toxicity of substances but also for understanding the biological processes behind skin *** though in vivo research is often preferred to study biological processes involving the skin,in vitro and ex vivo strategies have been gaining increasing relevance in recent ***,there is a noticeably increasing adoption of in vitro and ex vivo methods by internationally accepted ***,microfluidic organ-on-a-chip devices are nowadays emerging as valuable tools for functional and behavioural skin *** in miniaturization,automation and reliability still need to be addressed in order to create skin models that can predict skin behaviour in a robust,high-throughput manner,while being compliant with regulatory issues,standards and *** this review,skin models for transdermal transport,wound repair and cutaneous toxicity will be discussed with a focus on high-throughput *** microfluidic strategies driven by advancements in microfabrication technologies will also be revised as a way to improve the efficiency of existing models,both in terms of complexity and throughput.

关键词： Skin In vitro models Ex vivo models Transdermal transport assays Wound healing assays Toxicity assays Microfluidic chip Skin-on-a-chip

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Evaluation of biodegradable electric conductive tube-guides and mesenchymal stem cells

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World Journal of Stem Cells 2015年第6期7卷 956-975页

作者： Jorge Ribeiro Tiago pereira ana Rita Caseiro Paulo Armada-da-Silva Isabel Pires Justina Prada Irina Amorim Sandra Amado Miguel Franca Carolina Goncalves Maria Ascensao lopes Jose Domingos Santos Dina Morais Silva Stefano Geuna ana lúcia luís ana Colette Maurício Departmento de Clínicas Veterinárias and+UPVet Instituto de Ciencias Biomedicas de Abel Salazar(ICBAS)and Centro de Estudos de Ciencia Animal(CECA)Instituto de CienciasTecnologias e Agroambiente da Universidade do Porto(ICETA)Rua de Jorge Viterbo Ferreira4050-313 PortoPortugal Centro Interdisciplinar de Estudo de Performance Humana(CIPER) Faculdade de Motricidade Humana(FMH)Universidade de Lisboa(UL)Estrada da Costa1499-002 Cruz QuebradaDafundoPortugal CECAV and Departamento de Ciencias Veterinárias Universidade de Trás-os-Montes e Alto Douro(UTAD)5001-801 Vila RealPortugal Departmento de Patologia e de Imunologia Molecular Instituto de Ciencias Biomedicas de Abel SalazarRua de Jorge Viterbo Ferreira4050-313 PortoPortugal Instituto Português de Patologia e Imunologia Molecular da Universidade do Porto(IPATIMUP) Rua Dr.Roberto Frias s/n4200-465 PortoPortugal UIS-IPl:Unidade de Investigacao em Saúde da Escola Superior de Saúde de leiria Instituto Politécnico de Leiria2411-901 LeiriaPortugal CEMUC Departamento de Engenharia Metalúrgica e MateriaisFaculdade de Engenharia da Universidade do Porto(FEUP)Rua Dr.Roberto Frias4200-465 PortoPortugal Biosckin Molecular and Cell Therapies S.A.Tec MaiaRua Engenheiro Frederico Ulrich 26504470-605 MaiaPortugal Neuroscience Institute of the Cavalieri Ottolenghi Foundation and Department of Clinical and Biological Sciences University of Turin

AIM: To study the therapeutic effect of three tubeguides with electrical conductivity associated to mesenchymal stem cells(MSCs) on neuro-muscular regeneration after ***: Rats with 10-mm gap nerve injury were tested using polyvinyl alcohol(PVA), PVA-carbon nanotubes(CNTs) and MSCs, and PVA-polypyrrole(PPy). The regenerated nerves and tibialis anterior muscles were processed for stereological studies after 20 wk. The functional recovery was assessed serially for gait biomechanical analysis, by extensor postural thrust, sciatic functional index and static sciatic functionalindex(SSI), and by withdrawal reflex latency(WRl). In vitro studies included cytocompatibility, flow cytometry, reverse transcriptase polymerase chain reaction and karyotype analysis of the MSCs. Histopathology of lung, liver, kidneys, and regional lymph nodes ensured the biomaterials biocompatibility. RESUlTS: SSI remained negative throughout and independently from treatment. Differences between treted groups in the severity of changes in WRl existed, showing a faster regeneration for PVA-CNTs-MSCs(P less acute ankle joint angles were seen for PVA-CNTs-MSCs group(P = 0.051) suggesting improved ankle muscles function during the push off phase of the gait cycle. In PVA-PPy and PVA-CNTs groups, there was a 25% and 42% increase of average fiber area and a 13% and 21% increase of the "minimal Feret's diameter" respectively. Stereological analysis disclosed a significantly(P lin thickness(M), ratio myelin thickness/axon diameter(M/d) and ratio axon diameter/fiber diameter(d/D; g-ratio) in PVA-CNT-MSCs group(P lUSION: Results revealed that treatment with MSCs and PVA-CNTs tube-guides induced better nerve fiber regeneration. Functional and kinematics analysis revealed positive synergistic effects brought by MSCs and PVA-CNTs. The PVA-CNTs and PVA-PPy are promising scaffolds with electric conductive properties, bio- and cytocompatible th

关键词： Nerve regeneration Neurotmesis Tubeguides Mesenchymal stem cells Carbon nanotubes Functional assessment Gait biomechanical analysis Histomorfometry Polyvinyl alcohol

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Cardiovascular prevention in elderly patients

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Journal of Geriatric Cardiology 2022年第5期19卷 377-392页

作者： clara Bonanad Rosa Fernández-Olmo Sergio García-Blas Jose Antonio Alarcon Pablo Díez-Villanueva Carmen Rus Mansilla Héctor García-Pardo Pablo Toledo ana Ayesta Eva pereira Antoni Carol Almudena Castro-Conde Carmen de Pablo-Zarzoso Manuel Martínez-Sellés Vicente Arrarte Raquel Campuzano Albert Ariza-Solé Servicio de Cardiología Hospital Clínico Universitario de ValenciaValenciaSpain Instituto de Investigación Sanitaria INClIVA ValenciaSpain Servicio Cardiología Hospital Universitario de Jaén Spain Servicio Cardiología Hospital de Donosti Spain Servicio de Cardiología Hospital Universitario La Princesa de MadridSpain Servicio de Cardiología Hospital Alto Gudalquivir de AndújarJaénSpain Servicio de Cardiología Hospital Rio Hortega de ValladolidSpain Servicio Cardiología Hospital Clínico San Cecilio de Granada Spain Servicio de Cardiología Hospital Universitario Central de AsturiasSpain Servicio de Cardiologia Hospital de LugoSpain Servicio de Cardiología Hospital Moisés Broggi de BarcelonaSpain Servicio de Cardiología Hospital Universitario de la Paz de Madrid Spain Servicio de Cardiología Hospital Ramón y Cajal de MadridSpain Department of Cardiology.Hospital Universitario Gregorio Marañón CIBERCV.Universidad EuropeaUniversidad Compluten Servicio de Cardiología del Hospital General de Alicante Spain Servicio de Cardiología Hospital Universitario Fundación de Alcorcón de MadridSpain Servicio de Cardiología Hospital Bellvitge de BarcelonaBioheartGrup de Malalties CardiovascularsInstitut d’InvestigacióBiomèdica de BellvitgeIDIBELLL’Hospitalet de LlobregatBarcelonaSpain

In recent decades,life expectancy has been increasing *** this scenario,health interventions are ne-cessary to improve prognosis and quality of life of elderly with cardiovascular risk factors and cardiovascular ***,the number of elderly patients included in clinical trials is low,thus current clinical practice guidelines do not include specific *** document aims to review prevention recommendations focused in patients≥75 years with high or very high cardiovascular risk,regarding objectives,medical treatment options and also including physical exercise and their inclusion in cardiac rehabilitation ***,we will show why geriatric syndromes such as frailty,dependence,cognitive impair-ment,and nutritional status,as well as comorbidities,ought to be considered in this population regarding their important pro-gnostic impact.

关键词： prevention patients cardiovascular

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hsa-miR-29c and hsa-miR-135b differential expression aspotential biomarker of gastric carcinogenesis

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World Journal of Gastroenterology 2016年第6期22卷 2060-2070页

作者： Amanda Ferreira Vidal Aline MP Cruz leandro Magalhães Adenilson l.pereira ana KM anaissi Nélisson CF Alves Paulo JBS Albuquerque Rommel MR Burbano Samia Demachki Ândrea Ribeiro-dos-Santos Pós-Graduação em Genética e Biologia Molecular Universidade Federal do ParáCidade Universitária Prof.JoséSilveira NettoBelémPA 66075-970Brasil laboratório de Genética Humana e Médica Instituto de Ciências BiológicasUniversidade Federal do ParáBelémPA 66075-970Brasil Pós-Graduação em Neurociências e Biologia Molecular Universidade Federal do ParáBelémPA 66075-970Brasil laboratório de Citogenética Humana-Instituto de Ciências Biológicas Universidade Federal do ParáBelémPA 66075-970Brasil Hospital São Camilo e São luís-Rua Dr.Marcelo Cândia MacapáAP 68901-901Brasil Hospital Universitário João de Barros Barreto Universidade Federal do ParáBelémPA 66075-970Brasil Instituto de Ciências da Saúde Universidade Federal do ParáBelémPA 66075-970Brasil

AIM: To investigate the expression profiles of hsa-mi R-29 c and hsa-mi R-135 b in gastric mucosal samples and their values as gastric carcinogenesis biomarkers. METHODS: The expression levels of hsa-mi R-29 c and hsa-mi R-135 b in normal gastric mucosa, non-atrophic chronic gastritis, intestinal metaplasia and intestinaltype gastric adenocarcinoma were analysed using quantitative real-time PCR. The difference between hsa-mi R-29 c and hsa-mi R-135 b expression profiles in the grouped samples was evaluated by ANOVA and Student's t-test tests. The results were adjusted for multiple testing by using Bonferroni's correction. P values ≤ 0.05 were considered statistically significant. To evaluate hsa-mi R-29 c and hsa-mi R-135 b expressions as potential biomarkers of gastric carcinogenesis, we performed a receiver operating characteristic curve analysis and the derived area under the curve, and a Categorical Principal Components analysis. In silico identification of the genetic targets of hsa-mi R-29 c and hsa-mi R-135 b was performed using different prediction tools, in order to identify possible genes involved in gastric ***: The expression levels of hsa-mi R-29 c were higher in normal gastric mucosal samples, and decreased progressively in non-atrophic chronic gastritis samples, intestinal metaplasia samples and intestinal-type gastric adenocarcinoma samples. The expression of hsa-mi R-29 c in the gastric lesions showed that non-atrophic gastritis have an intermediate profile to gastric normal mucosa and intestinal-type gastric adenocarcinoma, and that intestinal metaplasia samples presented an expression pattern similar to that in intestinal-type gastric adenocarcinoma. This micro RNA(mi RNA) has a good discriminatory accuracy between normal gastric samples and(1) intestinal-type gastric adenocarcinoma; and(2) intestinal metaplasia, and regulates the DMNT3 A oncogene. hsa-mi R-135 b is up-regulated in non-atrophic chronic gastritis and intestinal m

关键词： Gastric cancer Gastric lesions Micro RNA Biomarker Carcinogenesis

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Effectiveness of BNT162b2 and CoronaVac vaccines against omicron in children aged 5 to 11 years

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World Journal of Pediatrics 2023年第10期19卷 949-960页

作者： Eduardo A.Oliveira Maria Christina l.Oliveira ana Cristina Simões e Silva Enrico A.Colosimo Robert H.Mak Mariana A.Vasconcelos ludmila R.Silva Daniella B.Martelli clara C.Pinhati Hercílio Martelli-Júnior Department of Pediatrics Health Sciences Postgraduate ProgramSchool of MedicineFederal University of Minas Gerais(UFMG)R.Engenheiro Amaro Lanari 389/501Belo HorizonteMG30130-100Brazil Department of Statistics Federal University of Minas GeraisBelo HorizonteMGBrazil Department of Pediatrics Rady Children’s HospitalUniversity of CaliforniaLa JollaSan DiegoCAUSA Health Science/Postgraduate Program in Nursing.School of Nursing Federal University of Minas Gerais(UFMG)Belo HorizonteMG30130-100Brazil Health Science/Primary Care Postgraduate Program State University of Montes Claros(Unimontes)Montes ClarosMG39401-089Brazil

Background This study aimed to estimate vaccine effectiveness(VE)against omicron variant infection and severe corona virus disease 2019(COVID-19)in children aged 5–11 years hospitalized with acute respiratory *** A test-negative,case–control analysis was conducted from February 2022 to June *** enrolled 6950 eligible children,including 1102 cases and 5848 *** was calculated after immunization with one and two doses of BNT162b2 or *** outcomes were hospitalization with acute respiratory symptoms and detection of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection and severe *** adjusted odds ratio for the association of prior vaccination and outcomes was used to estimate *** For fully vaccinated children,the overall estimated VE against hospitalization with SARS-CoV-2 infection was 42%[95%confidence interval(CI)26 to 54].VE peaked at 29–42 days(67%,95%CI 40%to 82%)and then declined to 19%(95%CI,−20%to 45%)at 57–120 days after the second *** BNT162b2 vaccine had a similar VE against hospitalization with SARS-CoV-2 infection(45%,95%CI,20 to 61)compared to the CoronaVac vaccine(40%,95%CI,17%to 56%).Among cases,56(5%)children died;53(94.6%)were not fully *** cases,the two-dose schedule effectiveness against ICU admission,need for invasive ventilation,severe illness,and death were 10%(95%CI,−54%–45%),22%(95%CI−70%–68%),12%(95%CI,−62%–52%),and 16%(95%CI,−77%–75%),*** For hospitalized children aged 5–11 years during the omicron-predominant period in Brazil,two doses of both vaccines had moderate effectiveness against hospitalization with acute respiratory symptoms and SARS-CoV-2 infection and offered limited protection against endpoints of COVID-19 severity.

关键词： Children COVID-19 Effectiveness Omicron Vaccine

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Pyroclastic material from the Puyehue-Cordon-Caulle Volcanic Complex, Chile, as carrier of Beauveria bassiana conidia: Potential utilization in mycoinsecticide formulations

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Journal of Agricultural Chemistry and Environment 2014年第1期3卷 14-21页

作者： Santiago Schalamuk Sebastián Pelizza ana clara Scorsetti María José González Irma lía Botto CEQUINOR (CCT-la Plata-CONICET-UNlP) La Plata Argentina INREMI (CICPBA-UNlP) La Plata Argentina Instituto Spegazzini (UNlP) La Plata Argentina

The last volcanic eruption of the Puyehue-Cordon-Caulle Volcanic Complex in the Andes cordillera of western South America, occurring on 4 June 2011, ejected pyroclastic materials that were accumulated in a wide region of the northern Patagonia (Argentina), affecting the environment and health of residents within the area. The aim of this work was to evaluate the practicability of using this waste material as a lowcost carrier for mycopesticide formulations. Beauveria bassiana is a recognized fungal agent for arthropod biologic control. lengthy storage is critical for the development of mycoinsecticide formulations. Accordingly, the search for adequate materials to improve the shelf life of biocontrol products becomes desirable. First, several analytical techniques were employed to characterize the pyroclast physicochemically;then the viability of the fungal conidia was evaluated after an 18-month storage in the volcanic material. Finally, the pathogenicity of the conidia after that prolonged maintenance in the vehicle was assessed on the beetle Alphitobius diaperinus, an insect pest in poultry houses that causes major economic losses. The results from those bioassays proved auspicious for the eventual utilization of the pyroclast as a bioinsecticide carrier especially since the formulation had proven to be stable for at least 18 months under a wide range of environmental conditions. The constant moisture in a closed environment within a 5°C - 40°C temperature range insures a viable state during storage. The results indicate that what would otherwise be volcanic waste may be utilized as an efficient, abundant, inexpensive, and environmentally innocuous carrier of entomopathogenic fungi.

关键词： Volcanic Material Bioinsecticide Entomopathogenic Fungi Viability Vehicle

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No independent associations between physical activity and clinical outcomes among hospitalized patients with moderate to severe COVID-19

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Journal of Sport and Health Science 2021年第6期10卷 690-696页

作者： ana J.Pinto Karla F.Goessler Alan l.Fernandes Igor H.Murai lucas P.Sales Bruna Z.Reis Mayara Diniz Santos Hamilton Roschel Rosa M.R.pereira Bruno Gualano Applied Physiology and Nutrition Research Group School of Physical Education and SportClinical Hospital HCFMUSPSchool of Medicine FMUSPUniversity of Sao PauloSao PauloSP 01246903Brazil Rheumatology Division Clinical Hospital HCFMUSPSchool of Medicine FMUSPUniversity of Sao PauloSao PauloSP 01246903Brazil Food Research Center University of Sao PauloSao PauloSP 05508080Brazil

Background:Regular physical activity(PA)has been postulated to improve,or at least maintain,immunity across the life ***,the link between physical(in)activity and coronavirus disease 2019(COVID-19)remains to be *** small-scale prospective cohort study is nested within a randomized controlled trial aimed to investigate the possible associations between PA levels and clinical outcomes among hospitalized patients with moderate to severe ***:Hospitalized patients with COVID-19(mean age:54.9 years)were recruited from the Clinical Hospital of the School of Medicine of the University of Sao Paulo(a quaternary referral teaching hospital)and from Ibirapuera Field Hospital,both located in Sao Paulo,*** level was assessed using the Baecke Questionnaire of Habitual Physical *** primary outcome was hospital length of *** secondary outcomes were mortality,admission to the intensive care unit(ICU),and mechanical ventilation ***:The median hospital length of stay was 7.0§4.0 days,median§IQR;3.3%of patients died,13.8%were admitted to the ICU,and 8.6%required mechanical *** linear regression models showed that PA indices were not associated with hospital length of stay(work index:b=-0.57(95%confidence interval(95%CI):-1.80 to 0.65),p=0.355;sport index:b=0.43(95%CI:-0.94 to 1.80),p=0.536;leisure-time index:b=1.18(95%CI:-0.22 to 2.59),p=0.099;and total activity index:b=0.20(95%CI:-0.48 to 0.87),p=0.563).None of the PA indices were associated with mortality,admission to the ICU,or mechanical ventilation requirement(all p>0.050).Conclusion:Among hospitalized patients with COVID-19,PA did not independently associate with hospital length of stay or any other clinically relevant *** findings should be interpreted as meaning that,among already hospitalized patients with more severe forms of COVID-19,being active is a potential protective factor likely outweighed by a cluster of comorbidities(e.

关键词： Hospital length of stay lifestyle Physical inactivity Prognosis SARS-CoV-2

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Diagnostic neuroradiology for the interventional neuroradiologist

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World Journal of Radiology 2013年第11期5卷 386-397页

作者： Vitor Mendes pereira Maria Isabel Vargas ana Marcos Philippe Bijlenga ana Paula Narata Sven Haller Karl-Olof lvblad Service Neuro-diagnostique et Neuro-interventionnel Geneva University Hospitals Service de Neurochirurgie HUG Geneva University Hospitals

In order to further improve the impact of the continuously evolving neurointerventional techniques, the interventional neuroradiologist needs to have at his disposal more powerful techniques to image the central nervous system. With the recent development of diagnostics techniques that are computed tomography and magnetic resonance based we are now able to assess not just morphology, but also physiology, physiopathology and function. This review discusses the place of diagnostic techniques in the evaluation that the interventional neuroradiologist hast to make when confronted with patients. We provide an overview of current techniques for the brain and spine.

关键词： Neuroradiology Brain Imaging Magnetic resonance Interventional radiology

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Assessment of periportal fibrosis in Schistosomiasis mansoni patients by proton nuclear magnetic resonance-based metabonomics models

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World Journal of Hepatology 2022年第4期14卷 719-728页

作者： Milena lima Rodrigues Tatiane Priscila Santos Rodrigues da luz Caroline louise Diniz pereira Andrea Dória Batista ana lúcia Coutinho Domingues Ricardo Oliveira Silva Edmundo Pessoa lopes Programa de Pós-Graduação em Medicina Tropical Centro de Ciências MédicasUniversidade Federal de PernambucoRecife 50670-901PernambucoBrazil Programa de Pós-Graduação em Química Centro de Ciências Exatas e da NaturezaUniversidade Federal de PernambucoRecife 50670-740PernambucoBrazil Hospital das Clínicas Departamento de Medicina ClínicaUniversidade Federal de PernambucoRecife 50670-901PernambucoBrazil

BACKGROUND The evaluation of periportal fibrosis(PPF)is essential for a prognostic assessment of patients with Schistosomiasis *** WHO Niamey Protocol defines patterns of fibrosis from abdominal ultrasonography,^(1)H-nuclear magnetic resonance(NMR)-based metabonomics has been employed to assess liver fibrosis in some *** To build 1H-NMR-based metabonomics models(MM)to discriminate mild from significant periportal PPF and identify differences in the metabolite *** A prospective cross-sectional study was performed on schistosomiasis patients at a University Hospital in Northeastern *** evaluated 41 serum samples from 10 patients with mild PPF(C Niamey pattern)and 31 patients with significant PPF(D/E/F Niamey patterns).MM were built using partial least squares-discriminant analysis(PlS-DA)and orthogonal projections to latent structures discriminant analysis(OPlS-DA)*** PlS-DA and OPlS-DA resulted in discrimination between mild and significant PPF groups with R2 and Q2 values of 0.80 and 0.38 and 0.72 and 0.42 for each model,*** OPlS-DA model presented accuracy,sensitivity,and specificity values of 92.7%,90.3%,and 100%to discriminate significant *** metabolites identified as responsible by discrimination were:Nacetylglucosamines,alanine,glycolaldehyde,carbohydrates,and *** MMs discriminated mild from significant PPF patterns in patients with Schistosomiasis mansoni through identification of differences in serum metabolites profiles.

关键词： Metabolomics Portal hypertension Schistosoma mansoni Biomarkers Neglected disease Nuclear magnetic resonance

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Potentially dangerous fish of the Paraiba Estuary: Identification and envenomation mechanisms

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Journal of Coastal life Medicine 2017年第11期5卷 459-462页

作者： Anderson Kelvin Saraiva Macêdo Jicaury Roberta pereira Da Silva Samara pereira De Oliveira Vidal Haddad Jr ana lúcia Vendel Centro de Ciências Biológicas e Sociais Aplicadas Universidade Estadual da ParaíbaCampus VRua Horácio TrajanoCristo Redentor58070-450 Joao PessoaParaíbaBrasil Faculdade de Medicina de Botucatu Universidade Estadual PaulistaCaixa Postal 55719618-000 BotucatuSao PauloBrasil

Objective: To present venomous and poisonous fish species in the Paraiba Estuary, Paraiba State, Brazil, with a description of the envenomation mechanisms and characteristics of the toxins. Methods: Fishes were caught by beach seine in the dry and rainy season (November 2013 and June 2014) and bimonthly between May 2016 and March 2017. Results: Eight potentially dangerous species belonging to the families Batrachoididae, Ariidae and Tetraodontidae were identified. The representatives of the former two families, toadfish and catfish, respectively had specific venom inoculating apparatuses that could penetrate tissues, releasing toxins that caused injuries mainly to fishermen. The family Tetraodontidae had poisonous species, once the pufferfish could accumulate biotoxins (especially tetrodotoxin, which is a neurotoxin produced by bacteria). Despite being toxic for consumption, these fish were often consumed by fishermen and their families. Conclusions: The present study is the first record of venomous and poisonous species in the Paraiba Estuary and contributes to the knowledge of the identification of the species and the mechanisms that cause severe envenomation and even deaths in artisanal fishing communities. Such knowledge is fundamental to future campaigns aimed at the prevention of injuries involving fish in the region and in other estuarine environments, where such fishes are common.

关键词： Catfish Poisonous fish Pufferfish Toadfish Venomous fish

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