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Valente JD, Silva NDS, Vasconcelos de Sousa S, Amaral CEDM, Pinto LC. Seroprevalence of Trypanosoma cruzi infection among blood donors in the state of Pará, Brazil. Transfus Apher Sci 2023; 62:103756. [PMID: 37357058 DOI: 10.1016/j.transci.2023.103756] [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] [Received: 02/13/2023] [Revised: 06/07/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
INTRODUCTION Chagas disease (CD) is a neglected pathology worldwide, considered a public health problem due to the high morbidity and mortality rate and its social impact. Thus, the objective was to estimate the prevalence of reactive serology for T. cruzi in blood donors in the units of the public blood network in the state of Pará (Brazil), as well as to describe the epidemiological profile of these donors. METHODS This is a retrospective and descriptive study carried out at the Pará State Center for Hematology and Hemotherapy (HEMOPA) between 2016 and 2021, with analysis of secondary data (epidemiological and serological) of inapt blood donors for CD. RESULTS Among the 533,674 screened samples, the reactivity for anti-T. cruzi was detected in 0.1% (548), of which 0.03% (166) were inconclusive and 0.07% (382) were positive. The hemonucleus of the city of Abaetetuba had the highest seroprevalence (0.6%). Regarding epidemiological characteristics, most blood donors were men (63.7%), aged between 31 and 45 (44.7%), racially mixed (79.2%), high school graduate (45.8%), single/widowed/divorced (62%), first-time donors (69%), spontaneous donations (58%) and from the state's countryside (69.9%). CONCLUSION Over the years analyzed, we observed an increase in seroprevalence for T. cruzi emphasizing the need to maintain epidemiological control in the region and the application of more accurate serological tests in the screening of donor blood bags.
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Affiliation(s)
- Jade Dias Valente
- Department of Biomedicine, Centro Universitário Metropolitano da Amazônia, Belém, Pará, Brazil
| | - Natália da Silva Silva
- Department of Biomedicine, Centro Universitário Metropolitano da Amazônia, Belém, Pará, Brazil
| | | | - Carlos Eduardo de Melo Amaral
- Department of Biomedicine, Centro Universitário Metropolitano da Amazônia, Belém, Pará, Brazil; Center for Hemotherapy and Hematology of Para, Belém, Pará, Brazil
| | - Laine Celestino Pinto
- Department of Biomedicine, Centro Universitário Metropolitano da Amazônia, Belém, Pará, Brazil; Laboratory of Experimental Neuropathology, Federal University of Pará, Biological Science Institute, Belém, Pará, Brazil.
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Ferreira LO, de Souza RD, Teixeira LL, Pinto LC, Rodrigues JCM, Martins-Filho AJ, da Costa ET, Hamoy M, Lopes DCF. The GPER1 agonist G1 reduces brain injury and improves the qEEG and behavioral outcome of experimental ischemic stroke. J Neuropathol Exp Neurol 2023; 82:787-797. [PMID: 37558387 DOI: 10.1093/jnen/nlad061] [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] [Indexed: 08/11/2023] Open
Abstract
Stroke is one of the principal cerebrovascular diseases in human populations and contributes to a majority of the functional impairments in the elderly. Recent discoveries have led to the inclusion of electroencephalography (EEG) in the complementary prognostic evaluation of patients. The present study describes the EEG, behavioral, and histological changes that occur following cerebral ischemia associated with treatment by G1, a potent and selective G protein-coupled estrogen receptor 1 (GPER1) agonist in a rat model. Treatment with G1 attenuated the neurological deficits induced by ischemic stroke from the second day onward, and reduced areas of infarction. Treatment with G1 also improved the total brainwave power, as well as the theta and alpha wave activity, specifically, and restored the delta band power to levels similar to those observed in the controls. Treatment with G1 also attenuated the peaks of harmful activity observed in the EEG indices. These improvements in brainwave activity indicate that GPER1 plays a fundamental role in the mediation of cerebral injury and in the behavioral outcome of ischemic brain injuries, which points to treatment with G1 as a potential pharmacological strategy for the therapy of stroke.
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Affiliation(s)
- Luan Oliveira Ferreira
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Rafael Dias de Souza
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Leonan Lima Teixeira
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Laine Celestino Pinto
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Joao Cleiton Martins Rodrigues
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | | | - Edmar Tavares da Costa
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Moisés Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Pará, Belém, Brazil
| | - Dielly Catrina Favacho Lopes
- Laboratory of Experimental Neuropathology, Joao de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
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Cacilhas P, Caberlon E, Angoleri L, Fassina K, Ribeiro RN, Pinto LC. Convalescent plasma therapy in COVID-19 patients: a non-randomized case-control study with concurrent control. Braz J Med Biol Res 2022; 55:e12235. [PMID: 36102417 PMCID: PMC9467281 DOI: 10.1590/1414-431x2022e12235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/06/2022] [Indexed: 12/02/2022] Open
Abstract
Convalescent plasma therapy has shown controversial results in coronavirus disease-19 (COVID-19) patients. We performed a non-randomized case-control study with contemporaneous controls in a hospital in southern Brazil. Patients were selected for treatment with convalescent plasma by medical decision and compared with patients who did not receive plasma and were hospitalized due to COVID-19 at the same time. The outcomes of interest were intensive care unit (ICU) admission and in-hospital death. Patients that received convalescent plasma had lower in-hospital mortality than patients that did not receive plasma (relative risk (RR) 0.48; 95% confidence interval (CI) 0.29 to 0.79) and these results were consistent after changing the subset of control patients. There were no differences regarding ICU admission between groups (RR=0.80; 95%CI: 0.47 to 1.35). In this study, patients that received convalescent plasma for COVID-19 had lower in-hospital mortality, but this finding requires further confirmation given the retrospective nature of the study.
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Affiliation(s)
- P Cacilhas
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
| | - E Caberlon
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
| | - L Angoleri
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
| | - K Fassina
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
| | - R N Ribeiro
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
| | - L C Pinto
- Hospital Nossa Senhora da Conceição, Porto Alegre, RS, Brasil
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de Oliveira BL, de Azevedo JC, do Nascimento JLS, Pinto LC. Parasitic contamination in the soil of public parks from northern Brazil. Ann Parasitol 2021; 67:287-294. [PMID: 34598400 DOI: 10.17420/ap6702.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Public parks are an important source of contamination by parasites due to the high flow of people and animals. We aimed to evaluate the prevalence of intestinal parasites in the soil of public parks from Belém, northern Brazil, as well as compare the degrees of parasitism in squares analyzed, the frequency of parasites found according to parasitological methods and verify the conditions of squares on collection day. This was a cross-sectional analytical study carried out during October 2020. The forty samples from four squares were analyzed by Hoffman, Faust and Baermman modified methods. The results showed that 72.5% of samples were parasitized and 100% of squares were contaminated with intestinal parasites. Moreover, polyparasitism was predominant in contaminated samples and Baermann-Moraes method was the most sensitive in the detection of helminths. Blastocystis hominis (47.2%) and hookworms (52.5%) were the most found species. Thus, this study showed parasitic contamination in all of the squares analyzed, which may be associated with poor sanitary from the city of Belém and reinforce the adoption of preventive measures to reduce the parasitic contamination on squares.
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Affiliation(s)
- Beatriz Lopes de Oliveira
- Centro Universitário Metropolitano da Amazônia, Av. Visconde de Souza Franco 72, 66053-000 Belém, PA, Brasil
| | | | | | - Laine Celestino Pinto
- Centro Universitário Metropolitano da Amazônia, Av. Visconde de Souza Franco 72, 66053-000 Belém, PA, Brasil.,Laboratório de Neuropatologia Experimental, Universidade Federal do Pará, Belém, PA, Brasil
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Da Silva GA, De Souza RF, Marinho VH, Pinheiro WB, Pinto LC, Montenegro RC, Arruda AC, Silva MN, Arruda MS. Novas isoflavonas isoladas das folhas de Vatairea guianensis Aubl. e atividade antiprolifetariva. Sci Plena 2020. [DOI: 10.14808/sci.plena.2020.117201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A espécie Vatairea guianensis Aubl, tem grande importância e aplicação na medicina tradicional no tratamento de doenças causadas por fungos dermatofíticos, sendo uma espécie promissora de moléculas bioativas, como antioxidantes, antifúngica dentre outras. Neste contexto, o objetivo deste estudo foi realizar o estudo fitoquímico e testar a atividade citotóxica em linhagens tumorais. O fracionamento do extrato etanólico das folhas levaram ao isolamento e identificação estrutural de cinco metabólicos secundários pertencentes a classe das isoflavonas. Destacam-se dois: Vatairenona A (S1) e Vatairenona B (S2), que são novos produtos naturais. A elucidação estrutural foi realizada utilizando dados espectroscópicos de RMN 1D e 2D, e em comparação com os dados da literatura. A substância Lupiwighteona (S3) apresentou citotoxicidade seletiva nas linhas de mama (MCF-7) e melanoma (SK-MEL-19), com valores IC50 3,971 ± 0,153 e 4,677 ± 0,328 μM, sem causar hemólise em eritrócitos de camundongos, avaliada pelo método MTT in vitro. Os resultados são promissores, sendo o primeiro estudo do gênero Vatairea com atividade citotóxica de isoflavonas de produtos naturais.
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Pinto LC, Sales LDO, Azevedo TCDB, Moreira-Nunes CA, Lemos JAR. Análise de mutações do domínio BCR-ABL quinase em pacientes com leucemia mielóide crônica refratários ao tratamento com mesilato de imatinibe. Rev Cienc Saude 2020. [DOI: 10.21876/rcshci.v10i4.994] [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: 11/03/2022] Open
Abstract
Objetivo: A Leucemia Mielóide Crônica (LMC) é um distúrbio clonal de células progenitoras hematopoiéticas, caracterizada por uma translocação recíproca entre os cromossomos 9 e 22, que resulta no gene híbrido BCR-ABL1.Mesmo com o progresso no tratamento da doença permitido pelos inibidores de tirosina quinase, mutações pontuais no domínio desse gene são as principais causas de resistência terapêutica, principalmente ao mesilato de imatinibe. O objetivo desse estudo foi analisar as mutações pontuais de alta resistência em paciente com LMC e sua possível correlação com a resposta ao tratamento. Métodos: Estudo transversal com 58 pacientes com LMC em tratamento com imatinibe e com resposta subótima à terapia. As amostras de sangue foram analisadas por PCR em tempo real usando a química TaqMan® para avaliar as seguintes mutações pontuais: T315I, E255V e Y253H. Resultados: Nenhum dos 58 pacientes apresentou alguma das mutações investigadas. Houve uso irregular da medicação em 16% (n = 9), dos quais 44% (n = 4) relataram uso descontínuo e interrupção por conta própria, e 56% (n = 5) apresentaram intolerância ao tratamento e trocaram de fármaco. Conclusão: A ausência das mutações pontuais nos pacientes portadores de LMC analisados neste estudo demonstrou que a falha na terapia não tem correlação molecular com as mutações analisadas e pode estar relacionada à menores taxas de adesão ao tratamento. Estes achados foram demonstrados em um número considerável de pacientes avaliados, apontando a necessidade da edução sobre a importância de seguir as recomendações sobre seu tratamento para evitar complicações futuras.
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Rodrigues AC, da Silva MDC, Pereira RÂS, Pinto LC. Prevalence of contamination by intestinal parasites in vegetables (Lactuca sativa L. and Coriandrum sativum L.) sold in markets in Belém, northern Brazil. J Sci Food Agric 2020; 100:2859-2865. [PMID: 31953861 DOI: 10.1002/jsfa.10265] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 07/09/2019] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Previous studies have recorded a high prevalence of intestinal parasites in lettuce (Lactuca sativa L.) and coriander (Coriandrum sativum L.) destined for human consumption. This study determined the prevalence of contamination by intestinal parasites in these two plants sold in two street markets and two supermarkets in the city of Belém, northern Brazil. RESULTS A total of 200 plant samples were analyzed (100 of each species). The samples were collected randomly between August and October 2018, examined by the spontaneous sedimentation method with two washes, and stored for 24 h. The analysis found that 89% (89/100) of the lettuce samples and 86% (86/100) of the coriander samples were contaminated. Polyparasitism was more frequent in lettuce, but monoparasitism predominated in the coriander. A total of 226 intestinal parasites were found in the lettuce, with a predominance of non-pathogenic parasites in the supermarket samples and more pathogenic parasites in the samples from street markets. In the coriander samples, 172 intestinal parasites were identified, with a predominance of pathogenic parasites in samples from both types of market. In the case of the protozoans, the most prevalent species was Endolimax nana, followed by Blastocystis hominis, in both vegetables. In the helminths, hookworms predominated in the lettuce, and Trichuris trichiura in the coriander. CONCLUSIONS These results highlight the need for the monitoring of parasite contamination in vegetables destined for human consumption. Public health initiatives should include educational campaigns on the importance of disinfecting vegetables prior to consumption. © 2020 Society of Chemical Industry.
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Affiliation(s)
| | | | | | - Laine Celestino Pinto
- Department of Biomedicine, Centro Universitário Metropolitano da Amazônia, Belém, Brazil
- Laboratory of Experimental Neuropathology, Biological Science Institute, Federal University of Pará, Belém, Brazil
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Pinto LC, Kramer CK, Camargo JL, Canani LH, Gross JL, Leitão CB. No effect of acidification or freezing on urinary metanephrine levels. J Endocrinol Invest 2020; 43:53-56. [PMID: 31228104 DOI: 10.1007/s40618-019-01076-9] [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: 02/20/2019] [Accepted: 06/14/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Urinary metanephrine is a reliable method to estimate catecholamine secretion. Traditionally, urinary metanephrines are collected into chilled containers containing hydrochloric acid (HCl) and most laboratories freeze urinary samples before analysis. It is uncertain if these pre-analytic procedures alter metanephrine values. AIM To evaluate if acidifying and freezing urine samples affect the accuracy of urinary metanephrine measurements. METHODS Random urine samples from healthy individuals were collected. Urine samples were distributed into two containers: with HCl 50% homogenized with urine to obtain pH < 2, and without HCl. Each container was divided again into aliquots for immediate measurement or freezing. One aliquot with acid (group 1) and another without acid (group 2) were sent immediately to the laboratory for testing (HPLC), while the other two aliquots, one with acid (group 3) and another without it (group 4) were frozen for 3 months at - 20 °C. Bland-Altman's test was used to analyze inter-assay agreement between measurements. RESULTS A total of 15 individuals were included (mean age 27.5 ± 5.9 years, 8 male and 14 white). No difference was observed on mean urinary metanephrine/creatinine ratio between groups: group 1: 0.23 ± 0.11, group 2: 0.22 ± 0.07, group 3: 0.25 ± 0.13, group 4: 0.25 ± 0.15 mg/g creatinine; P > 0.05 for all the comparisons). Bland-Altman's analysis showed agreement between the standard method (group 1) and the experimental method (group 4). CONCLUSION Measurement of urinary metanephrines by HPLC method is not influenced by sample acidification nor freezing at - 20 °C for 3 months.
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Affiliation(s)
- L C Pinto
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4° Andar, Porto Alegre, RS, 90035-003, Brazil.
| | - C K Kramer
- Division of Endocrinology, Department of Medicine, University of Toronto, Toronto, Canada
| | - J L Camargo
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4° Andar, Porto Alegre, RS, 90035-003, Brazil
| | - L H Canani
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4° Andar, Porto Alegre, RS, 90035-003, Brazil
| | - J L Gross
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4° Andar, Porto Alegre, RS, 90035-003, Brazil
| | - C B Leitão
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4° Andar, Porto Alegre, RS, 90035-003, Brazil
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Celestino Pinto L, Paula Guimarães da Costa Carvalho A, Caroline Nazaré Pinto dos Santos M, Oliveira de Araujo Morais R. DETECTION OF INTESTINAL PARASITES IN PUBLIC TRANSPORT BUSES IN BELÉM, PARÁ STATE, NORTHERN BRAZIL. Rev Patol Trop 2019. [DOI: 10.5216/rpt.v48i3.59155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The purpose of this study was to investigate the frequency of intestinal parasites in public transport buses in the city of Belém, Pará, Brazil, as well as to compare the frequency of these enteroparasites according to the bus lines, collection sites within the vehicles, and presence of pathogenic and nonpathogenic parasites in the samples. This is a cross-sectional analytical study carried out between February and April 2019, in which 320 samples were analyzed, from 5 bus lines, 8 buses each, collected from 8 different surfaces inside the vehicles, according to Graham’s method. Subsequently, the statistical test was performed to evaluate the differencesbetween the variables, considering p ≤ 0.05. The results indicated that 7.8% of the samples were parasitized and the right handrail presented the highest prevalence of parasites, namely 2.2%. The pathogenic parasites corresponded to 26.7% and the non-pathogenic 73.3%. The non-pathogenic parasite most commonly found was Entamoeba coli totaling 50%, whereas the only pathogenic parasite was Giardia intestinalis in 26.7%. Thus, the presence of pathogenic and non-pathogenic parasites reflects the precarious hygiene of users of this type of transport, presenting a public health issue which needs to be addressed.
KEY WORDS: Intestinal Diseases, Fomites, Transmission, Pathogenic parasites, Enteroparasite
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Pinto LC, Mesquita FP, Soares BM, da Silva EL, Puty B, de Oliveira EHC, Burbano RR, Montenegro RC. Mebendazole induces apoptosis via C-MYC inactivation in malignant ascites cell line (AGP01). Toxicol In Vitro 2019; 60:305-312. [PMID: 31207347 DOI: 10.1016/j.tiv.2019.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 03/18/2019] [Revised: 05/13/2019] [Accepted: 06/12/2019] [Indexed: 12/16/2022]
Abstract
The objective of study was to examine the role of MBZ on malignant ascites cells and the involvement of C-MYC. Comet assay was used to assess the genotoxic effects of MBZ in AGP01 cells and human lymphocytes; differential staining by ethidium bromide and acridine orange, caspase 3/7 and flow cytometry assay was done to access the mechanisms of apoptosis and cell cycle analysis of MBZ in AGP01 cells. C-MYC amplification, C-MYC mRNA and C-MYC protein expression were evaluated by FISH, RT-qPCR and Western blotting, respectively. In addition, cytotoxicity of MBZ was evaluated in AGP01 and AGP01 shRNA MYC by MTT. MBZ significantly increased the damage index and no produced in human lymphocytes. MBZ caused remarkable cell cycle arrest in G0/G1 and G2/M phases at 0.5μM and 1.0 μM, respectively and induced significantly apoptosis in higher concentrations. Additionally, MBZ (0.5 μM and 1.0 μM) increased caspase 3 and 7 activities. MBZ decreased signals, C-MYC mRNA and C-MYC protein expression in AGP01 cells. MBZ induced lower cell viability in AGP01 cells compared AGP01 shRNA MYC in the same concentration. Therefore, our results show the evidence of C-MYC gene as one of the pathways by which MBZ induces cell death in gastric cancer cells.
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Affiliation(s)
- Laine Celestino Pinto
- Laboratory of Experimental Neuropathology, Biological Science Institute, Federal University of Pará, Mundurucus street, 4487 - Guamá, Belém, Brazil
| | - Felipe Pantoja Mesquita
- Laboratory of Pharmacogenetics, Drug Research and Development Center (NPDM), Federal University of Ceará, Cel. Nunes de Melo, 1000 - Rodolfo Teófilo, Fortaleza, Brazil
| | - Bruno Moreira Soares
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01 - Guamá, Belém, Brazil
| | - Emerson Lucena da Silva
- Laboratory of Pharmacogenetics, Drug Research and Development Center (NPDM), Federal University of Ceará, Cel. Nunes de Melo, 1000 - Rodolfo Teófilo, Fortaleza, Brazil
| | - Bruna Puty
- Laboratory of Structural and Functional Biology Science, Federal University of Pará, Augusto Correa Avenue, 01 - Guamá, Belém, Brazil; Laboratory of Cell Culture and Cytogenetics, Environment Section, Evandro Chagas Institute, Rodovia BR-316 km 7 - s/n, Levilândia, Ananindeua, Brazil
| | - Edivaldo Herculano Corrêa de Oliveira
- Laboratory of Cell Culture and Cytogenetics, Environment Section, Evandro Chagas Institute, Rodovia BR-316 km 7 - s/n, Levilândia, Ananindeua, Brazil
| | - Rommel Rodriguez Burbano
- Laboratory of Human Cytogenetics, Biological Science Institute, Federal University of Pará, Augusto Correa Avenue, 01 - Guamá, Belém, Brazil
| | - Raquel Carvalho Montenegro
- Laboratory of Pharmacogenetics, Drug Research and Development Center (NPDM), Federal University of Ceará, Cel. Nunes de Melo, 1000 - Rodolfo Teófilo, Fortaleza, Brazil.
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Macedo AL, Duprat RC, Moreira DDL, Kaplan MAC, Vasconcelos TRA, Pinto LC, Montenegro RC, Ratcliffe NA, Mello CB, Valverde AL. Isolation of a larvicidal compound from Piper solmsianum C.DC. (Piperaceae). Nat Prod Res 2017; 32:2701-2704. [PMID: 28882070 DOI: 10.1080/14786419.2017.1374265] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The Aedes aegypti mosquito is one of the major vectors of arboviruses. These diseases have re-emerged and the insecticides used nowadays are toxic to mammals and environment and have only been effective in the short-term. In this context, natural products are an alternative. The genus Piper has many active compounds against arthropods, including neolignans. The present study evaluated the larvicidal potential of the n-hexanic extract of Piper solmsianum and eupomatenoid-6, identified by GC-MS and NMR techniques, from this extract against Ae. aegypti. The crude extract (100 μg/mL) killed 80% and 98.3% of larvae in the first and third day, respectively. Eupomatenoid-6 exhibited LD50 of 19.33 μM and LD90 of 28.68 μM and was then assayed in human fibroblast cells (MRC5), showing an IC50 of 39.30 μM with estimated LD50 of 42.26 mmol/kg. Our results indicate eupomatenoid-6 as a potent insecticide with relatively low toxicity for mammals.
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Affiliation(s)
- Arthur Ladeira Macedo
- a Departamento de Química Orgânica, Instituto de Química , Universidade Federal Fluminense , Niterói , Brazil
| | | | - Davyson de Lima Moreira
- c Departamento de Produtos Naturais , Instituto de Tecnologia em Farmacos, Fundação Oswaldo Cruz , Rio de Janeiro , Brazil
| | | | | | - Laine Celestino Pinto
- e Departamento de Fisiologia e Farmacologia , Universidade Federal do Pará , Belém , Brazil
| | | | | | | | - Alessandra Leda Valverde
- a Departamento de Química Orgânica, Instituto de Química , Universidade Federal Fluminense , Niterói , Brazil
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Pinto LC, Soares BM, Pinheiro JDJV, Riggins GJ, Assumpção PP, Burbano RMR, Montenegro RC. The anthelmintic drug mebendazole inhibits growth, migration and invasion in gastric cancer cell model. Toxicol In Vitro 2015; 29:2038-44. [PMID: 26315676 DOI: 10.1016/j.tiv.2015.08.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 02/24/2015] [Revised: 07/16/2015] [Accepted: 08/04/2015] [Indexed: 12/12/2022]
Abstract
The present study aimed to investigate the effects of MBZ on a human malignant ascites cell line derived from a primary gastric cancer tumor. Our data reveal that MBZ showed high cytotoxicity in vitro, displaying an IC50 of 0.39 μM and 1.25 μM in ACP-02 and ACP-03, respectively. The association between MBZ and 5-FU increased slightly the cytotoxicity when compared to MBZ and 5-FU alone. Furthermore, MBZ disrupted the microtubule structure of AGP-01 cells and inhibited significantly the invasion and migration of these cells. Activity of active MMP-2 significantly decreased at all tested concentration of MBZ compared to negative control. These results support the indication of MBZ in combination with chemotherapeutic agents as a possible adjuvant therapy for the management/treatment of patients with advanced gastric cancer since MBZ is a drug of low cost with acceptable safety profile and reduced toxicity to normal cells. However, clinical trials must be performed in o to evaluate its efficacy in gastric cancer patients.
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Affiliation(s)
- Laine Celestino Pinto
- Biological Science Institute, Federal University of Para, Augusto Correa Avenue, 01 Guamá, Belém, Pará, Brazil
| | - Bruno Moreira Soares
- Biological Science Institute, Federal University of Para, Augusto Correa Avenue, 01 Guamá, Belém, Pará, Brazil
| | | | - Gregory J Riggins
- Department of Neurosurgery, Johns Hopkins University School of Medicine, 1550 Orleans Street, Baltimore, MD 21231, USA
| | - Paulo Pimentel Assumpção
- Biological Science Institute, Federal University of Para, Augusto Correa Avenue, 01 Guamá, Belém, Pará, Brazil
| | | | - Raquel Carvalho Montenegro
- Biological Science Institute, Federal University of Para, Augusto Correa Avenue, 01 Guamá, Belém, Pará, Brazil.
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Soares BM, Araújo TMT, Ramos JAB, Pinto LC, Khayat BM, De Oliveira Bahia M, Montenegro RC, Burbano RMR, Khayat AS. Effects on DNA repair in human lymphocytes exposed to the food dye tartrazine yellow. Anticancer Res 2015; 35:1465-1474. [PMID: 25750299] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Tartrazine is a food additive that belongs to a class of artificial dyes and contains an azo group. Studies about its genotoxic, cytotoxic and mutagenic effects are controversial and, in some cases, unsatisfactory. This work evaluated the potential in vitro cytotoxicity, genotoxicity and effects on DNA repair of human lymphocytes exposed to the dye. We assessed the cytotoxicity of tartrazine by 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide test and the response of DNA repair through comet assay (alkaline version). We used different concentrations of the dye, ranging from 0.25-64.0 mM. The results demonstrated that tartrazine has no cytotoxic effects. However, this dye had a significant genotoxic effect at all concentrations tested. Although most of the damage was amenable to repair, some damage remained higher than positive control after 24 h of repair. These data demonstrate that tartrazine may be harmful to health and its prolonged use could trigger carcinogenesis.
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Affiliation(s)
- Bruno Moreira Soares
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
| | - Taíssa Maíra Thomaz Araújo
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
| | | | - Laine Celestino Pinto
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
| | | | | | - Raquel Carvalho Montenegro
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
| | - Rommel Mario Rodríguez Burbano
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
| | - André Salim Khayat
- Human Cytogenetics Laboratory, Federal University of Pará, Belém, Brazil Oncology Research Federal University of Pará, Belém, Brazil
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14
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Chazin EDL, Sanches PDS, Lindgren EB, Vellasco Júnior WT, Pinto LC, Burbano RMR, Yoneda JD, Leal KZ, Gomes CRB, Wardell JL, Wardell SMSV, Montenegro RC, Vasconcelos TRA. Synthesis and biological evaluation of novel 6-hydroxy-benzo[d][1,3]oxathiol-2-one Schiff bases as potential anticancer agents. Molecules 2015; 20:1968-83. [PMID: 25633329 PMCID: PMC6272564 DOI: 10.3390/molecules20021968] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 12/25/2014] [Accepted: 12/31/2014] [Indexed: 11/24/2022] Open
Abstract
With the aim of discovering new anticancer agents, we have designed and synthesized novel 6-hydroxy-benzo[d][1,3]oxathiol-2-one Schiff bases. The synthesis started with the selective nitration at 5-position of 6-hydroxybenzo[d][1,3]oxathiol-2-one (1) leading to the nitro derivative 2. The nitro group of 2 was reduced to give the amino intermediate 3. Schiff bases 4a–r were obtained from coupling reactions between 3 and various benzaldehydes and heteroaromatic aldehydes. All the new compounds were fully identified and characterized by NMR (1H and 13C) and specifically for 4q by X-ray crystallography. The in vitro cytotoxicity of the compounds was evaluated against cancer cell lines (ACP-03, SKMEL-19 and HCT-116) by using MTT assay. Schiff bases 4b and 4o exhibited promising cytotoxicity against ACP-03 and SKMEL-19, respectively, with IC50 values lower than 5 μM. This class of compounds can be considered as a good starting point for the development of new lead molecules in the fight against cancer.
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Affiliation(s)
- Eliza de Lucas Chazin
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
| | - Paola de Souza Sanches
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
| | - Eric Brazil Lindgren
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
| | - Walcimar Trindade Vellasco Júnior
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
| | - Laine Celestino Pinto
- Instituto de Ciências Biológicas, Universidade Federal do Pará, Av. Augusto Corrêa 01, Guamá, Belém 66075-110, PA, Brazil.
| | - Rommel Mario Rodríguez Burbano
- Instituto de Ciências Biológicas, Universidade Federal do Pará, Av. Augusto Corrêa 01, Guamá, Belém 66075-110, PA, Brazil.
| | - Julliane Diniz Yoneda
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Fluminense, Rua Desembargador Ellis Hemydio Figueira 783, Aterrado, Volta Redonda 27213-415, RJ, Brazil.
| | - Kátia Zaccur Leal
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
| | - Claudia Regina Brandão Gomes
- Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Farmanguinhos, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro 21041-250, RJ, Brazil.
| | - James Lewis Wardell
- Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos-Farmanguinhos, Rua Sizenando Nabuco 100, Manguinhos, Rio de Janeiro 21041-250, RJ, Brazil.
| | | | - Raquel Carvalho Montenegro
- Instituto de Ciências Biológicas, Universidade Federal do Pará, Av. Augusto Corrêa 01, Guamá, Belém 66075-110, PA, Brazil.
| | - Thatyana Rocha Alves Vasconcelos
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de São João Batista s/no, Centro, Niterói 24020-141, RJ, Brazil.
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15
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Greca LF, Pinto LC, Rados DR, Canani LH, Gross JL. Clinical features of patients with type 2 diabetes mellitus and hepatitis C infection. Braz J Med Biol Res 2012; 45:284-90. [PMID: 22286533 PMCID: PMC3854195 DOI: 10.1590/s0100-879x2012007500013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 10/06/2011] [Indexed: 02/07/2023] Open
Abstract
The objective of the present cross-sectional study was to assess the prevalence and the clinical and laboratory features of hepatitis C virus (HCV)-positive patients with type 2 diabetes mellitus (DM) attending either an outpatient clinic or hemodialysis units. Serologic-HCV testing was performed in 489 type 2 DM patients (303 outpatients and 186 on dialysis). A structured assessment of clinical, laboratory and DM-related complications was performed and the patients were then compared according to HCV infection status. Mean patient age was 60 years; HCV positivity (HCV+) was observed in 39 of 303 (12.9%) outpatients and in 34 of 186 (18.7%) dialysis patients. Among HCV+ patients, 32 were men (43.8%). HCV+ patients had higher serum levels of aspartate aminotransferase (0.90 ± 0.83 vs 0.35 ± 0.13 μKat/L), alanine aminotransferase (0.88 ± 0.93 vs 0.38 ± 0.19 μKat/L), gamma-glutamyl transferase (1.57 ± 2.52 vs 0.62 ± 0.87 μKat/L; P < 0.001), and serum iron (17.65 ± 6.68 vs 14.96 ± 4.72 μM; P = 0.011), and lower leukocyte and platelet counts (P = 0.010 and P < 0.001, respectively) than HCV-negative (HCV-) patients. HCV+ dialysis patients had higher diastolic blood pressure than HCV- patients (87.5 ± 6.7 vs 81.5 ± 6.0 mmHg; P = 0.005) and a lower prevalence of diabetic retinopathy (75 vs 92.7%; P = 0.007). In conclusion, our study showed that HCV is common among subjects with type 2 DM but is not associated with a higher prevalence of chronic diabetic complications.
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Affiliation(s)
- L F Greca
- Serviço de Endocrinologia, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Porto Alegre, RS, Brazil
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16
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Abstract
Topiramate was associated with weight loss in clinical trials. We summarize the evidence on the efficacy and safety of topiramate in the treatment of overweight/obesity. The databases Medline, Embase, and Cochrane were searched. Randomized controlled studies with at least 16 weeks of duration that report the effect of topiramate on weight loss and adverse events were eligible for inclusion. Ten studies were included (3320 individuals). Patients treated with topiramate lost an average of 5.34 kg (95% confidence interval [95%CI]-6.12 to -4.56) of additional weight as compared with placebo. According to meta-regression analysis, treatment duration and dosage were associated with the efficacy of topiramate treatment. Evaluating trials using topiramate 96-200 mg day(-1) , the weight loss was higher in trials with >28 weeks of duration (-6.58 kg [95%CI -7.48 to -5.68]) than in trials with ≤28 weeks (-4.11 kg [95%CI -4.92 to -3.30]). Data of 6620 individuals were available for adverse events evaluation and those more frequently observed were paraesthesia, taste impairment and psychomotor disturbances. The odds ratio for adverse events leading to topiramate withdrawal was 1.94 (95%CI 1.64-2.29) compared with the control group. In conclusion, topiramate might be a useful adjunctive therapeutic tool in the treatment of obesity as long as proper warnings about side effects are considered.
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Affiliation(s)
- C K Kramer
- Division of Endocrinology, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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17
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Borges BDN, Santos EDS, Bastos CEMC, Pinto LC, Anselmo NP, Quaresma JAS, Calcagno DQ, Burbano RMR, Harada ML. Promoter polymorphisms and methylation of E-cadherin (CDH1) and KIT in gastric cancer patients from northern Brazil. Anticancer Res 2010; 30:2225-2233. [PMID: 20651373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
UNLABELLED The aim of this study was to verify genetic and epigenetic alterations in gastric cancer patients from Pará state, northern Brazil. MATERIALS AND METHODS Exon 11 of KIT and two promoter polymorphisms (-160 C/A and -347 G/GA) of the E-cadherin gene (CDH1), and their correlation with the promoter methylation status were analyzed. RESULTS No genetic alterations in KIT were found. Promoter polymorphisms revealed an increased probability of developing gastric cancer, especially of the diffuse-type, in patients carrying -160 A and -347 GA alleles. Analyses of CDH1 methylation suggested a significant difference between hypermethylated and non-hypermethylated samples, with a positive association between the -160 A allele and hypermethylation. CONCLUSION Our results suggest that -160 A and -347 GA polymorphisms may increase the chance of developing gastric cancer in the studied population and that -160 A polymorphism seems to be related to the hypermethylation pattern of the promoter region of CDH1.
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Affiliation(s)
- Bárbara do Nascimento Borges
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará, Belém, Pará, Brazil.
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18
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Laurenti MD, da Matta VLR, Pernichelli T, Secundino NFC, Pinto LC, Corbett CEP, Pimenta PPF. Effects of salivary gland homogenate from wild-caught and laboratory-reared Lutzomyia longipalpis on the evolution and immunomodulation of Leishmania (Leishmania) amazonensis infection. Scand J Immunol 2009; 70:389-95. [PMID: 19751274 DOI: 10.1111/j.1365-3083.2009.02310.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigated the effects of Lutzomyia longipalpis salivary glands homogenate of wild-caught and laboratory-reared vectors on the lesion evolution and immunomodulation of the infection caused by Leishmania (Leishmania) amazonensis. To compare the effect of both salivary glands homogenate (SGH), C57BL/6 mice were inoculated subcutaneously into the hind footpads or into the ear dermis with 10(6) promastigotes in the presence or not of SGH from wild-caught and laboratory-colonized sand flies. Comparing SGH groups, the lesion size was lower in mice co-inoculated with wild-caught SGH, as the parasitism and the infiltration of macrophages at the inoculation site. Wild-caught SGH also determined lower production of IL-4 and IL-10 but higher IL-12 levels compared with laboratory-reared SGH. Our findings address a probable bias by using SGH from laboratory-colonized sand flies instead of wild-caught vector SGH in studies concerning saliva effects. A possible mild influence of sand fly saliva in natural infections caused by Leishmania is also speculated, as infection is transmitted by wild and not by laboratory-reared vectors.
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Affiliation(s)
- M D Laurenti
- Laboratory of Pathology of Infectious Diseases (LIM-50), Department of Pathology, Medical School, University of São Paulo, São Paulo, SP, Brazil.
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19
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Silva CMG, Matos MHT, Rodrigues GQ, Faustino LR, Pinto LC, Chaves RN, Araújo VR, Campello CC, Figueiredo JR. In vitro survival and development of goat preantral follicles in two different oxygen tensions. Anim Reprod Sci 2009; 117:83-9. [PMID: 19442461 DOI: 10.1016/j.anireprosci.2009.03.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 03/20/2009] [Accepted: 03/27/2009] [Indexed: 10/20/2022]
Abstract
The aim of the present study was to evaluate the effect of two different oxygen (O(2)) concentrations on survival and development of preantral follicles of goats cultured in vitro. Preantral ovarian follicles (> or =150 microm) were isolated from ovarian cortex fragments of goats and individually cultured for 30 days under two different O(2) concentrations (5% and 20% O(2)). Follicle development was evaluated on the basis of antral cavity formation, increase in follicular diameter, presence of healthy cumulus oocyte complexes and fully grown oocytes. Results showed with progression of culture period from 6 to 12 days, a decrease in follicular survival was observed in both O(2) concentrations (P<0.05). When the O(2) tensions were compared to each other in the different days of culture, 20% O(2) was more efficient in promoting an increase in follicular diameter from day 24 of culture onward than 5% O(2) (P<0.05). However, follicles cultured with 5% O(2) had an increased percentage of antrum formation from 12 days to the end of culture, compared with 20% O(2) (P<0.05). Moreover, there was no difference in percentage of fully developed oocytes with the different O(2) tensions. However, only oocytes (16.7%) from follicles cultured in 20% O(2) resumed meiosis. In conclusion, concentration of 20% O(2) was more efficient in promoting follicular growth and oocyte meiosis resumption from preantral follicles of goats when grown in vitro.
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Affiliation(s)
- C M G Silva
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil.
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20
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Leitão CB, Canani LH, Kramer CK, Moehlecke M, Pinto LC, Ricardo ED, Pinotti AF, Gross JL. Blood pressure means rather than nocturnal dipping pattern are related to complications in Type 2 diabetic patients. Diabet Med 2008; 25:308-13. [PMID: 18201207 DOI: 10.1111/j.1464-5491.2007.02354.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM To determine whether systolic and diastolic blood pressure (BP) means, during ambulatory BP monitoring (ABPM), are more strongly correlated with microvascular complications and echocardiographic structural alterations than night-time/daytime (N/D) BP ratio. METHODS A cross-sectional study was conducted in 270 Type 2 diabetes mellitus (DM) outpatients who underwent clinical and laboratory investigations, urinary albumin excretion rate (UAER) determination, echocardiography, office and 24-h ABPM (Spacelabs 90207). RESULTS UAER, after multivariate adjustments, was associated with office BP (systolic: R(2)(a) 0.162, P < 0.001; diastolic: R(2)(a) 0.124, P < 0.001) and ABPM (24-h systolic: R(2)(a) 0.195, P < 0.001; 24-h diastolic: R(2)(a) 0.197, P < 0.001) but not with N/D BP ratios (systolic: R(2)(a) 0.062, P = 0.080; diastolic: R(2)(a) 0.063, P = 0.069). Similar results were observed for echocardiographic parameters. The presence of retinopathy was associated only with night-time BP values [systolic means: odds ratio (OR) 1.13, 95% confidence interval (CI) 1.03-1.24 and diastolic means: OR 1.21, CI 1.04-1.40 and N/D diastolic BP ratio > 0.90, OR 3.21, CI 1.65-6.25]. CONCLUSIONS UAER and echocardiographic structural alterations had more consistent correlations of a greater magnitude with systolic BP means than with N/D BP ratios. The nocturnal BP values appear to be more relevant for diabetic retinopathy. BP measurement in patients with Type 2 DM should take into account the 24-h period rather than focusing on a specific time span of BP homeostasis.
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Affiliation(s)
- C B Leitão
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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21
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Pinto LC, Giliberti P. Neonatal seizures: background EEG activity and the electroclinical correlation in full-term neonates with hypoxic-ischemic encephalopathy. Analysis by computer-synchronized long-term polygraphic video-EEG monitoring. Epileptic Disord 2001; 3:125-32. [PMID: 11679303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Between 1994 and 2000, 30 full-term newborns affected by seizures secondary to hypoxic-ischemic encephalopathy, underwent computerised, polygraphic, video-EEG recordings during the first 48 hours of life, in our neonatal intensive care unit. In this longitudinal study, recordings lasted an average of 10.5 hours. We studied EEG ictal discharges that lacked a clinical correlate, the semeiotics, and the electroclinical correlation during seizures, by reviewing the time-synchronised, video-EEG recordings obtained during these six years. The aim of this investigation was to evaluate the relationship between background EEG activity and the electroclinical correlation or dissociation of the seizures. When background activity was depressed and undifferentiated, the seizures were characterised by the electroclinical dissociation except in instances of focal tonic seizures. With all other background patterns, seizures were invariably accompanied by the electrical correlate, the only exception being ocular signs and oral-buccal-lingual movements, which occurred both with and without paroxysmal discharges. Ocular signs and oral-buccal-lingual movements were very frequent and were observed with all patterns of background activity. Only on one occasion were they the sole clinical expression of seizures. In our patients, the electroclinical dissociation was constant only if background EEG activity was depressed and undifferentiated. The constant electroclinical dissociation of seizures was closely correlated with the type of background activity, which, in turn, is indicative of severe cerebral damage. (Published with videosequences.)
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Affiliation(s)
- L C Pinto
- Neonatal Intensive Care Unit, V. Monaldi Hospital, Via Bramante 15, (ex via Caravaggio 36), I-80126 Naples, Italy.
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22
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Gerbase-Delima M, Pinto LC, Grumach A, Carneiro-Sampaio MM. HLA antigens and haplotypes in IgA-deficient Brazilian paediatric patients. Eur J Immunogenet 1998; 25:281-5. [PMID: 9777327 DOI: 10.1046/j.1365-2370.1998.00098.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In the present study we determined the HLA-A, B and DR antigenic and haplotypic frequencies in unrelated Brazilian Caucasian paediatric patients with IgA deficiency (IgA-D). Out of 17 IgA-D subjects typed for HLA A and B specificities, 12 (71%) presented B8 and/or B14; of 15 patients also typed for HLA-DR specificities, 14 (93%) were positive for at least one of the HLA markers previously reported to be associated with IgA-D, i.e. B8, B14, DR1, DR3 or DR7. The haplotypes B8, DR3, B14, DR1 and B13, DR7 were present in 43, 21 and 14% of the cases, respectively, while they have a frequency in the general population of 2, 2 and 1%, respectively. The concomitant association with the three IgA-associated haplotypes found in our study probably reflects the admixture of European genetic influences present in the Brazilian Caucasian population of São Paulo.
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Affiliation(s)
- M Gerbase-Delima
- Departamento de Pediatria, Escola Paulista de Medicina, Universidade Federal de São Paulo, Brasil
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23
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Del Giudice E, Pelosi L, Romano A, De Bellis P, Licenziati MR, Pastore I, Andria G, Boltshauser E, Pinto LC. Unexplained bilateral occipital calcification and reduced vision. Neuropediatrics 1984; 15:218-9. [PMID: 6436726 DOI: 10.1055/s-2008-1052371] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
An eight year-old girl, investigated because of convulsions, was found to have isolated bilateral presumably cortical and subcortical calcification, reduced visual acuity and prolonged visual evoked response latencies. There were no clinical manifestations of a phakomatosis.
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