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1.
Protein Expr Purif ; 222: 106534, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38897399

RESUMO

Tribolium castaneum, also known as the red flour beetle, is a polyphagous pest that seriously damages agricultural products, including stored and processed grains. Researchers have aimed to discover alternative pest control mechanisms that are less harmful to the ecosystem than those currently used. We conduct the purification and characterization of a protease inhibitor from C. plumieri seeds and an in vitro evaluation of its insecticidal potential against the insect pest T. castaneum. The trypsin inhibitor was isolated from C. plumieri seeds in a single-step DEAE-Sepharose column chromatography and had a molecular mass of 50 kDA. When analyzed for interaction with different proteolytic enzymes, the inhibitor exhibited specificity against trypsin and no activity against other serine proteases such as chymotrypsin and elastase-2. The isolated inhibitor was able to inhibit digestive enzymes of T. castaneum from extracts of the intestine of this insect. Therefore, we conclude that the new protease inhibitor, specific in tryptic inhibition, of protein nature from the seeds of C. plumieri was effective in inhibiting the digestive enzymes of T. castaneum and is a promising candidate in the ecological control of pests.


Assuntos
Tribolium , Inibidores da Tripsina , Animais , Inibidores da Tripsina/farmacologia , Inibidores da Tripsina/química , Inibidores da Tripsina/isolamento & purificação , Tribolium/enzimologia , Tribolium/efeitos dos fármacos , Proteínas de Insetos/química , Proteínas de Insetos/isolamento & purificação , Proteínas de Insetos/antagonistas & inibidores , Sementes/química , Inseticidas/farmacologia , Inseticidas/química , Inseticidas/isolamento & purificação , Proteínas de Plantas/farmacologia , Proteínas de Plantas/isolamento & purificação , Proteínas de Plantas/química
2.
Rev. Baiana Saúde Pública ; 48(1): 268-278, 20240426.
Artigo em Português | LILACS | ID: biblio-1555837

RESUMO

O objetivo deste estudo foi relatar a experiência do desenvolvimento de uma proposta de educação continuada executada pela equipe de enfermagem com agentes comunitários de saúde (ACS), considerando como foco a vacinação infantil. Trata-se de um relato de experiência elaborado e vivenciado por enfermeiro e acadêmico de enfermagem em novembro de 2019, com a participação de duas equipes pertencentes a uma Unidade Básica de Saúde do município de Arapiraca (AL). Através da metodologia de ensino da problematização por meio do Arco de Maguerez, foram realizadas oficinas e ações educativas para os ACS, a partir das necessidades relatadas por esses profissionais em relação à vacinação infantil. Tais atividades proporcionaram maior aproximação com a realidade vivenciada por quem ocupa a posição de educador e incentivador do cuidado da saúde durante a visita domiciliar. Além disso, enfatizaram a importância do enfermeiro enquanto responsável pela educação continuada da equipe. Verificou-se ainda que o diálogo aberto e horizontal, de modo empático, proporcionou a construção de uma ferramenta eficaz, de fácil manuseio e de baixo custo, que gerou uma melhor memorização e segurança não somente para os ACS nas visitas domiciliares, mas também nas atividades de outros profissionais atuantes no campo da promoção da saúde infantil.


This study reports the experience of developing an educational product based on continued education carried out by a nursing team with community health agents (CHA) considering childhood vaccination as the focus. This is an experience report that was prepared and experienced by a nurse and nursing student in November 2019, with the participation of two teams belonging to a basic health unit in the municipality of Arapiraca, Alagoas, Brazil. Using the problematization teaching methodology by Arco de Marguerez, workshops and educational actions were carried out for the CHA based on the needs they reported regarding childhood vaccination, which provided a greater approximation with the reality experienced by those in the position of educators and encouragers of health care during home visits. Furthermore, it emphasized the importance of nurses as responsible for the team's continuing education. It was also verified that open and horizontal dialogue empathetically provided the construction of an effective, easy to use, low cost tool, bringing better memorization and safety not only for community agents during home visits but also in activities from other professionals working in the field of child health promotion.


El objetivo de este estudio fue reportar la experiencia de desarrollo de una propuesta de educación continua realizada por el equipo de enfermería con agentes comunitarios de salud (ACS), considerando como enfoque la vacunación infantil. Este es un reporte de experiencia elaborado y vivido por un enfermero y un estudiante de enfermería en noviembre de 2019, con la participación de dos equipos de una unidad básica de salud de la ciudad de Arapiraca, Brasil. Utilizando la metodología de enseñanza de problematización del Arco de Maguerez, se realizaron talleres y acciones educativas para ACS a partir de las necesidades reportadas por estos profesionales con relación a la vacunación infantil. Estas actividades proporcionaron una mayor aproximación a la realidad vivida por quienes ocupan la posición de educador y motivador del cuidado de la salud durante la visita domiciliaria. Además, destacaron la importancia del enfermero como responsable de la formación continua del equipo. También se constató que el diálogo abierto y horizontal, de manera empática, propició la construcción de una herramienta efectiva, fácil de usar y de bajo costo, que generó una mejor memorización y seguridad no solo para los ACS durante las visitas domiciliarias, sino también en las actividades de otros profesionales que trabajan en el campo de la promoción de la salud infantil.


Assuntos
Humanos , Criança , Programas de Imunização
3.
J Gastrointest Oncol ; 13(6): 3123-3134, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36636072

RESUMO

Background: Barcelona Clinic Liver Cancer (BCLC) is a recognized guideline to standardize treatment allocation for hepatocellular carcinoma (HCC); however, many centers criticize its restrictive liver resection recommendations and have published good results after more liberal hepatectomy indications. The objective is to evaluate the results of HCC resection in a single center, with a more liberal indication for resection than proposed by the BCLC guideline. It was performed a retrospective cohort study including all patients who underwent liver resection for HCC in a single center between April 2008 and November 2018. Methods: The results of 150 patients who underwent hepatectomy were evaluated and compared facing both 2010 and 2018 BCLC guidelines. Overall and disease-free survival after resection in patients with none, one, two, or three of the risk factors, as proposed by the BCLC, as contraindications to resection (portal hypertension, portal invasion, and more than one nodule) were analyzed. Results: Nodule size and presence of portal invasion alone did not affect prognosis. If the BCLC 2010 and 2018 guidelines were followed, 46.7% and 26.7% of the patients, respectively, would not have received potentially curative treatment. The median overall and disease-free survival for patients with one BCLC contraindication factor were 43.3 and 15.1 months, respectively. The presence of two risk factors had a negative impact on overall survival (OS) and disease-free survival (DFS), although some patients had long-term survival. The only patient with the three risk factors had a poor outcome. Conclusions: Selected patients with one BCLC contraindication factor may undergo resection with good results, whereas those with two factors should be allocated for hepatectomy only in favorable scenarios. Patients with the three risk factors do not appear to benefit from resection.

4.
Biochimie ; 191: 11-26, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34375717

RESUMO

The RVB proteins, composed of the conservative paralogs, RVB1 and RVB2, belong to the AAA+ (ATPases Associated with various cellular Activities) protein superfamily and are present in archaea and eukaryotes. The most distinct structural features are their ability to interact with each other forming the RVB1/2 complex and their participation in several macromolecular protein complexes leading them to be involved in many biological processes. We report here the biochemical and biophysical characterization of the Neurospora crassa RVB-1/RVB-2 complex. Chromatographic analyses revealed that the complex (APO) predominantly exists as a dimer in solution although hexamers were also observed. Nucleotides influence the oligomerization state, while ATP favors hexamers formation, ADP favors the formation of multimeric states, likely dodecamers, and the Molecular Dynamics (MD) simulations revealed the contribution of certain amino acid residues in the nucleotide stabilization. The complex binds to dsDNA fragments and exhibits ATPase activity, which is strongly enhanced in the presence of DNA. In addition, both GFP-fused proteins are predominantly nuclear, and their nuclear localization signals (NLS) interact with importin-α (NcIMPα). Our findings show that some properties are specific of the fungus proteins despite of their high identity to orthologous proteins. They are essential proteins in N. crassa, and the phenotypic defects exhibited by the heterokaryotic strains, mainly related to growth and development, indicate N. crassa as a promising organism to investigate additional biological and structural aspects of these proteins.


Assuntos
DNA Fúngico/metabolismo , Proteínas Fúngicas/metabolismo , Complexos Multienzimáticos/metabolismo , Neurospora crassa/enzimologia , Multimerização Proteica , DNA Fúngico/genética , Proteínas Fúngicas/genética , Complexos Multienzimáticos/genética , Neurospora crassa/genética
5.
Biochem J ; 478(13): 2715-2732, 2021 07 16.
Artigo em Inglês | MEDLINE | ID: mdl-34195786

RESUMO

The classical nuclear import pathway is mediated by importin (Impα and Impß), which recognizes the cargo protein by its nuclear localization sequence (NLS). NLSs have been extensively studied resulting in different proposed consensus; however, recent studies showed that exceptions may occur. This mechanism may be also dependent on specific characteristics of different Impα. Aiming to better understand the importance of specific residues from consensus and adjacent regions of NLSs, we studied different mutations of a high-affinity NLS complexed to Impα by crystallography and calorimetry. We showed that although the consensus sequence allows Lys or Arg residues at the second residue of a monopartite sequence, the presence of Arg is very important to its binding in major and minor sites of Impα. Mutations in the N or C-terminus (position P1 or P6) of the NLS drastically reduces their affinity to the receptor, which is corroborated by the loss of hydrogen bonds and hydrophobic interactions. Surprisingly, a mutation in the far N-terminus of the NLS led to an increase in the affinity for both binding sites, corroborated by the structure with an additional hydrogen bond. The binding of NLSs to the human variant Impα1 revealed that these are similar to those found in structures presented here. For human variant Impα3, the bindings are only relevant for the major site. This study increases understanding of specific issues sparsely addressed in previous studies that are important to the task of predicting NLSs, which will be relevant in the eventual design of synthetic NLSs.


Assuntos
Calorimetria/métodos , Simulação de Acoplamento Molecular , Sinais de Localização Nuclear/genética , alfa Carioferinas/genética , Transporte Ativo do Núcleo Celular/genética , Sequência de Aminoácidos , Animais , Sítios de Ligação/genética , Ligação Competitiva , Núcleo Celular/metabolismo , Cristalografia por Raios X , Humanos , Ligação de Hidrogênio , Camundongos , Mutação , Ligação Proteica , Domínios Proteicos , Eletricidade Estática , alfa Carioferinas/química , alfa Carioferinas/metabolismo
6.
Rev Bras Enferm ; 74(1): e20200080, 2021.
Artigo em Inglês, Português | MEDLINE | ID: mdl-33787780

RESUMO

OBJECTIVES: to identify the evidence available in the literature on the knowledge of dentists regarding risk factors and early diagnosis of oral and oropharyngeal cancer. METHODS: it is an integrative review of the literature. Boolean descriptors and operators were searched in the PubMed and LILACS databases, using gray literature, in English, Spanish and Portuguese. RESULTS: of the 79 PubMed and 152 LILACS articles, 24 were selected. Of these, eight showed good knowledge of dentists, while most showed low or little knowledge of risk factors and early diagnosis in dentists. All studies, however, highlight the need for continuing education to improve and maintain knowledge about risk factors and early diagnosis. CONCLUSIONS: most dental surgeons have insufficient knowledge of oral/oropharyngeal cancer. Continued education is suggested, aiming at improving knowledge and early diagnosis.


Assuntos
Neoplasias Bucais , Neoplasias Orofaríngeas , Cirurgiões , Humanos , Conhecimento , Neoplasias Bucais/etiologia , Fatores de Risco
7.
Rev. bras. enferm ; Rev. bras. enferm;74(1): e20200080, 2021. tab
Artigo em Inglês | LILACS, BDENF - Enfermagem | ID: biblio-1155935

RESUMO

ABSTRACT Objectives: to identify the evidence available in the literature on the knowledge of dentists regarding risk factors and early diagnosis of oral and oropharyngeal cancer. Methods: it is an integrative review of the literature. Boolean descriptors and operators were searched in the PubMed and LILACS databases, using gray literature, in English, Spanish and Portuguese. Results: of the 79 PubMed and 152 LILACS articles, 24 were selected. Of these, eight showed good knowledge of dentists, while most showed low or little knowledge of risk factors and early diagnosis in dentists. All studies, however, highlight the need for continuing education to improve and maintain knowledge about risk factors and early diagnosis. Conclusions: most dental surgeons have insufficient knowledge of oral/oropharyngeal cancer. Continued education is suggested, aiming at improving knowledge and early diagnosis.


RESUMEN Objetivos: identificar evidencias disponibles en la literatura sobre el conocimiento de los quirúrgicos dentistas cuanto a los factores de riesgo y diagnóstico precoz del cáncer de boca/ orofaríngeo. Métodos: revisión integrativa de la literatura. Se realizaron búsquedas mediante los descriptores y operadores booleanos en base de datos PubMed y LILACS, con uso de literatura gris, en los idiomas inglés, español y portugués. Resultados: de los 79 artículos del PubMed y 152 del LILACS, 24 seleccionados. De estos, ocho mostraron bueno conocimiento de los dentistas, mientras la mayoría mostró bajo o poco conocimiento sobre factores de riesgo y diagnóstico precoz en dentistas. Todos los estudios, aunque, destacan la necesidad de educación continuada para mejorar y mantener el conocimiento sobre factores de riesgo y diagnóstico precoz. Conclusiones: gran parte de los quirúrgicos dentistas presenta un conocimiento insuficiente sobre cáncer de boca/orofaríngeo. Sugerida educación continuada, objetivando mejorar el conocimiento y el diagnóstico precoz.


RESUMO Objetivos: identificar as evidências disponíveis na literatura sobre o conhecimento dos cirurgiõesdentistas quanto aos fatores de risco e diagnóstico precoce do câncer de boca e orofaringe. Métodos: trata-se de uma revisão integrativa da literatura. Foram realizadas buscas mediante os descritores e operadores booleanos na base de dados PubMed e LILACS, com uso de literatura cinza, nos idiomas inglês, espanhol e portugês. Resultados: dos 79 artigos do PubMed e 152 do LILACS, 24 foram selecionados. Destes, oito mostraram bom conhecimento dos dentistas, enquanto a maioria mostrou baixo ou pouco conhecimento sobre fatores de risco e diagnóstico precoce em dentistas. Todos os estudos, no entanto, destacam a necessidade de educação continuada para melhorar e manter o conhecimento sobre fatores de risco e diagnóstico precoce. Conclusões: grande parte dos cirurgiões-dentistas apresenta um conhecimento insuficiente sobre câncer de boca/orofaringe. É sugerida a educação continuada, visando melhorar o conhecimento e o diagnóstico precoce.


Assuntos
Humanos , Neoplasias Bucais , Neoplasias Orofaríngeas , Cirurgiões , Neoplasias Bucais/etiologia , Fatores de Risco , Conhecimento
8.
Sci Rep ; 10(1): 1458, 2020 01 29.
Artigo em Inglês | MEDLINE | ID: mdl-31996719

RESUMO

Importin-α (Impα) is an adaptor protein that binds to cargo proteins (containing Nuclear Localization Sequences - NLSs), for their translocation to the nucleus. The specificities of the Impα/NLS interactions have been studied, since these features could be used as important tools to find potential NLSs in nuclear proteins or even for the development of targets to inhibit nuclear import or to design peptides for drug delivery. Few structural studies have compared different Impα variants from the same organism or Impα of different organisms. Previously, we investigated nuclear transport of transcription factors with Neurospora crassa Impα (NcImpα). Herein, NIT-2 and PAC-3 transcription factors NLSs were studied in complex with Mus musculus Impα (MmImpα). Calorimetric assays demonstrated that the PAC-3 NLS peptide interacts with both Impα proteins with approximately the same affinity. The NIT-2 NLS sequence binds with high affinity to the Impα major binding site from both organisms, but its binding to minor binding sites reveals interesting differences due to the presence of additional interactions of NIT-2-NLS with MmImpα. These findings, together with previous results with Impα from other organisms, indicate that the differential affinity of NLSs to minor binding sites may be also responsible for the selectivity of some cargo proteins recognition and transport.


Assuntos
Núcleo Celular/metabolismo , Camundongos/fisiologia , alfa Carioferinas/metabolismo , Aminoidrolases/genética , Aminoidrolases/metabolismo , Animais , Cristalização , Cristalografia por Raios X , Proteínas Fúngicas/genética , Proteínas Fúngicas/metabolismo , Chaperonas Moleculares/genética , Chaperonas Moleculares/metabolismo , Neurospora crassa/fisiologia , Sinais de Localização Nuclear/genética , Ligação Proteica , Conformação Proteica em alfa-Hélice , Transporte Proteico , Transcrição Gênica , alfa Carioferinas/genética
9.
Clin Nutr ; 39(3): 694-704, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-30987812

RESUMO

Obese individuals present adverse changes in the diversity and composition of the gut microbiota, leading to alterations in energy balance, lipid metabolism, endocrine disturbances, and low-grade chronic systemic inflammation increases. Probiotic supplementation appears to change gut microbiota by decrease gut permeability, inflammation, and metabolic disorders, creating a promising environment to weight loss. This revision resumes the main findings of probiotic supplementation and weight loss that contributed to building the current background linking changes in gut microbiota profile and with obesity.


Assuntos
Suplementos Nutricionais , Sobrepeso/tratamento farmacológico , Probióticos/farmacologia , Redução de Peso/efeitos dos fármacos , Índice de Massa Corporal , Feminino , Humanos , Masculino , Obesidade/tratamento farmacológico
10.
Biochimie ; 162: 15-25, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30930281

RESUMO

Rbp38 is a protein exclusively found in trypanosomatid parasites, including Leishmania amazonensis, the etiologic agent of tegumentar leishmaniasis in the Americas. The protein was first described as a Leishmania tarentolae mitochondrial RNA binding protein. Later, it was shown that the trypanosomes Rbp38 orthologues were exclusively found in the mitochondria and involved in the stabilization and replication of kinetoplast DNA (kDNA). In contrast, L. amazonensis Rbp38 (LaRbp38), co-purifies with telomerase activity and interacts not only with kDNA but also with telomeric DNA, although shares with its counterparts high sequence identity and a putative N-terminal mitochondrial targeting signal (MTS). To understand how LaRbp38 interacts both with nuclear and kDNA, we have first investigated its subcellular localization. Using hydroxy-urea synchronized L. amazonensis promastigotes we could show that LaRbp38 shuttles from mitochondria to the nucleus at late S and G2 phases. Further, we identified a non-classical nuclear localization signal (NLS) at LaRbp38 C-terminal that binds with importin alpha, a protein involved in the nuclear transport of several proteins. Also, we obtained LaRbp38 truncated forms among which, some of them also showed an affinity for both telomeric DNA and kDNA. Analysis of these truncated forms showed that LaRbp38 DNA-binding region is located between amino acid residues 95-235. Together, our findings strongly suggest that LaRbp38 is multifunctional with dual subcellular localization.


Assuntos
DNA de Cinetoplasto/metabolismo , DNA Mitocondrial/metabolismo , Leishmania/metabolismo , Proteínas de Protozoários/metabolismo , Proteínas de Ligação a RNA/metabolismo , Telômero/metabolismo , Ligação Proteica
11.
Semina Ci. agr. ; 40(2): 665-676, Mar.-Apr. 2019. ilus, tab, graf
Artigo em Inglês | VETINDEX | ID: vti-19431

RESUMO

Dogs are considered the main domestic host of Leishmania infantum. The transmission between vertebrate hosts normally occurs during blood feeding of Lutzomyia sp., a genus of phlebotomine sand flies. However, other forms of transmission without a vector have been reported. Presence of amastigotes of Leishmania sp. in different organs can cause several pathologies depending on the immune status of the host and the parasite load. The aim of this study was to evaluate histopathological changes in the reproductive tract of male dogs. Samples of testes, epididymis, and prostate gland were collected from 70 animals that were grouped according to serology test results for visceral leishmaniasis and clinical symptoms. Three experimental groups were formed based on serological results and clinical presentation: asymptomatic, symptomatic and control. Prostatic changes were seen regardless of the serological results; however, the changes were more severe in symptomatic animals. In the testes and epididymis, lesions such as interstitial infiltrate, degeneration, and fibrosis were seen more frequently and were more severe in positive animals when compared to the control group. These results demonstrate that dogs infected with Leishmania sp. can develop nonspecific changes in the reproductive tract, which are more severe in symptomatic animals.(AU)


Os cães são considerados os principais hospedeiros domésticos de Leishmania infantum. A transmissão entre hospedeiros vertebrados normalmente ocorre durante o repasto sanguíneo de Lutzomyia sp., gênero de flebotomíneo. Entretanto, outras formas de transmissão sem a presença do vetor têm sido relatadas. A presença de amastigotas de Leishmania sp. em diferentes órgãos pode causar diversas patologias de acordo com o status imune do hospedeiro e a carga parasitária. O objetivo deste trabalho foi avaliar as alterações histopatológicas no trato reprodutivo de cães machos. Amostras de testículo, epidídimo e próstata foram coletadas de 70 animais, os quais foram agrupados conforme o resultado da sorologia para leishmaniose visceral e os sinais clínicos. Três grupos experimentais foram formados baseados nos resultados sorológicos e manifestações clínicas: assintomático, sintomático e controle. Alterações prostáticas foram observadas independentemente dos resultados sorológicos; entretanto, foram mais acentuadas nos animais sintomáticos. Nos testículos e epidídimos, lesões como infiltrado intersticial, degeneração e fibrose foram observadas mais frequentemente e de forma mais severa nos animais positivos quando comparados ao grupo controle. Estes resultados demonstram que cães infectados com Leishmania sp. podem desenvolver alterações não específicas no trato reprodutivo, as quais são...(AU)


Assuntos
Animais , Masculino , Cães , Leishmaniose Visceral/sangue , Leishmaniose Visceral/veterinária , Leishmania infantum , Epididimo/microbiologia , Próstata/microbiologia , Testículo/microbiologia , Testes Sorológicos/veterinária
12.
Semina ciênc. agrar ; 40(2): 665-676, 2019. ilus, tab, graf
Artigo em Inglês | VETINDEX | ID: biblio-1501366

RESUMO

Dogs are considered the main domestic host of Leishmania infantum. The transmission between vertebrate hosts normally occurs during blood feeding of Lutzomyia sp., a genus of phlebotomine sand flies. However, other forms of transmission without a vector have been reported. Presence of amastigotes of Leishmania sp. in different organs can cause several pathologies depending on the immune status of the host and the parasite load. The aim of this study was to evaluate histopathological changes in the reproductive tract of male dogs. Samples of testes, epididymis, and prostate gland were collected from 70 animals that were grouped according to serology test results for visceral leishmaniasis and clinical symptoms. Three experimental groups were formed based on serological results and clinical presentation: asymptomatic, symptomatic and control. Prostatic changes were seen regardless of the serological results; however, the changes were more severe in symptomatic animals. In the testes and epididymis, lesions such as interstitial infiltrate, degeneration, and fibrosis were seen more frequently and were more severe in positive animals when compared to the control group. These results demonstrate that dogs infected with Leishmania sp. can develop nonspecific changes in the reproductive tract, which are more severe in symptomatic animals.


Os cães são considerados os principais hospedeiros domésticos de Leishmania infantum. A transmissão entre hospedeiros vertebrados normalmente ocorre durante o repasto sanguíneo de Lutzomyia sp., gênero de flebotomíneo. Entretanto, outras formas de transmissão sem a presença do vetor têm sido relatadas. A presença de amastigotas de Leishmania sp. em diferentes órgãos pode causar diversas patologias de acordo com o status imune do hospedeiro e a carga parasitária. O objetivo deste trabalho foi avaliar as alterações histopatológicas no trato reprodutivo de cães machos. Amostras de testículo, epidídimo e próstata foram coletadas de 70 animais, os quais foram agrupados conforme o resultado da sorologia para leishmaniose visceral e os sinais clínicos. Três grupos experimentais foram formados baseados nos resultados sorológicos e manifestações clínicas: assintomático, sintomático e controle. Alterações prostáticas foram observadas independentemente dos resultados sorológicos; entretanto, foram mais acentuadas nos animais sintomáticos. Nos testículos e epidídimos, lesões como infiltrado intersticial, degeneração e fibrose foram observadas mais frequentemente e de forma mais severa nos animais positivos quando comparados ao grupo controle. Estes resultados demonstram que cães infectados com Leishmania sp. podem desenvolver alterações não específicas no trato reprodutivo, as quais são...


Assuntos
Masculino , Animais , Cães , Epididimo/microbiologia , Leishmania infantum , Leishmaniose Visceral/sangue , Leishmaniose Visceral/veterinária , Próstata/microbiologia , Testículo/microbiologia , Testes Sorológicos/veterinária
13.
Biochimie, v. 162, p. 15-25, jul. 2019
Artigo em Inglês | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-2729

RESUMO

Rbp38 is a protein exclusively found in trypanosomatid parasites, including Leishmania amazonensis, the etiologic agent of tegumentar leishmaniasis in the Americas. The protein was first described as a Leishmania tarentolae mitochondrial RNA binding protein. Later, it was shown that the trypanosomes Rbp38 orthologues were exclusively found in the mitochondria and involved in the stabilization and replication of kinetoplast DNA (kDNA). In contrast, L. amazonensis Rbp38 (LaRbp38), co-purifies with telomerase activity and interacts not only with kDNA but also with telomeric DNA, although shares with its counterparts high sequence identity and a putative N-terminal mitochondrial targeting signal (MTS). To understand how LaRbp38 interacts both with nuclear and kDNA, we have first investigated its subcellular localization. Using hydroxy-urea synchronized L. amazonensis promastigotes we could show that LaRbp38 shuttles from mitochondria to the nucleus at late S and G2 phases. Further, we identified a non-classical nuclear localization signal (NLS) at LaRbp38?C-terminal that binds with importin alpha, a protein involved in the nuclear transport of several proteins. Also, we obtained LaRbp38 truncated forms among which, some of them also showed an affinity for both telomeric DNA and kDNA. Analysis of these truncated forms showed that LaRbp38 DNA-binding region is located between amino acid residues 95–235. Together, our findings strongly suggest that LaRbp38 is multifunctional with dual subcellular localization.

14.
Biochimie ; 146: 87-96, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29175432

RESUMO

MLH1 and PMS2 proteins form the MutLα heterodimer, which plays a major role in DNA mismatch repair (MMR) in humans. Mutations in MMR-related proteins are associated with cancer, especially with colon cancer. The N-terminal region of MutLα comprises the N-termini of PMS2 and MLH1 and, similarly, the C-terminal region of MutLα is composed by the C-termini of PMS2 and MLH1, and the two are connected by linker region. The nuclear localization sequences (NLSs) necessary for the nuclear transport of the two proteins are found in this linker region. However, the exact NLS sequences have been controversial, with different sequences reported, particularly for MLH1. The individual components are not imported efficiently, presumably due to their C-termini masking their NLSs. In order to gain insights into the nuclear transport of these proteins, we solved the crystal structures of importin-α bound to peptides corresponding to the supposed NLSs of MLH1 and PMS2 and performed isothermal titration calorimetry to study their binding affinities. Both putative MLH1 and PMS2 NLSs can bind to importin-α as monopartite NLSs, which is in agreement with some previous studies. However, MLH1-NLS has the highest affinity measured by a natural NLS peptide, suggesting a major role of MLH1 protein in nuclear import compared to PMS2. Finally, the role of MLH1 and PMS2 in the nuclear transport of the MutLα heterodimer is discussed.


Assuntos
Núcleo Celular/metabolismo , Reparo de Erro de Pareamento de DNA , Endonuclease PMS2 de Reparo de Erro de Pareamento/metabolismo , Proteína 1 Homóloga a MutL/metabolismo , Transporte Ativo do Núcleo Celular , Sequência de Aminoácidos , Animais , Humanos , Carioferinas/metabolismo , Camundongos , Endonuclease PMS2 de Reparo de Erro de Pareamento/química , Modelos Moleculares , Proteína 1 Homóloga a MutL/química , Conformação Proteica
15.
Hig. aliment ; 30(260/261): 28-33, 30/10/2016. tab, ilus
Artigo em Português | LILACS | ID: biblio-2693

RESUMO

Este trabalho teve como objetivo avaliar os cardápios servidos aos pacientes em dieta livre, funcionários e acompanhantes de três hospitais públicos do município de Aracaju, Sergipe. Foi realizada uma pesquisa exploratória entre os meses de fevereiro a maio de 2015. Foram avaliados os cardápios do almoço de 30 dias, de pacientes em dieta livre, funcionários e acompanhantes, utilizando-se o método Avaliação Qualitativa das Preparações do Cardápio. Os hospitais 1 e 2 fornecem cardápios diferentes para os pacientes em dieta livre e para os funcionários/acompanhantes. O hospital 3 mantem o mesmo cardápio. Tanto no cardápio dos pacientes quanto dos funcionários / acompanhantes do hospital 1 observou-se repetição de cores, carnes gordurosas, oferta de doces e baixa oferta de folhosos. No cardápio dos pacientes do hospital 2 encontrou-se baixa oferta de folhosos, repetição de cores, presença de doces e carnes gordurosas. Para os funcionários/acompanhantes inadequações foram encontradas para frituras, repetição de cores e carnes gordurosas. No hospital 3 encontrou-se repetição de cores, presença de carnes gordurosas, oferta de doces e estes combinados a frituras. Faz-se necessária a implementação de medidas preventivas e corretivas, visando o fornecimento de refeições mais saudáveis e atrativas.


The present work aimed to evaluate the menu available to the patients in free diet, hospital staff and companions in three public hospital from Sergipe, county of Aracaju. In order to that, an exploratory research was realized between February and May of 2015. Furthermore, lunch menus of patients in free diet, hospital staff and companions were evaluated during thirty days using the Qualitative Evaluation of Menu Preparations method. The hospitals 1 and 2 provide different menus to patients in free diet and to hospital staff/companions. Whereas, the hospital 3 keeps the same menu. The menu of either patients or hospital staff/companions from hospital 1 revealed a repetition of colors, fat meat, sweets and low supply of leafy. Likewise, the menu of patients from hospital 2 exhibited a low supply of leafy, repetition of colors, sweets and fat meat. In addition, the hospital staff/companions menu showed inadequacies for fried food, repetition of colors and fat meat. While the hospital 3 showed a repetition of colors, presence of fat meat, sweets and sweets combined to fried food. As result, it may be necessary to implement precautionary and corrective actions, in order to supply healthier and attractive meals.


Assuntos
/estatística & dados numéricos , Comportamento Alimentar , Alimentos, Dieta e Nutrição , Promoção da Saúde , Hospitais Públicos , Planejamento de Cardápio , Comportamento Alimentar , Estilo de Vida Saudável , Necessidades Nutricionais
16.
Rev. Adm. Munic ; 287: 17-23, set. 2016.
Artigo em Português | LILACS | ID: biblio-912493

RESUMO

A PNRS delimitou responsáveis para a gestão de resíduos sólidos no Brasil. O Setor Público e o Setor Privado interagem ensejando uma problemática quanto à delimitação de atribuições nas etapas da operação logística. O presente artigo problematiza estas indefinições que colaboram para a manutenção do trabalho informal e também para a morosidade na estruturação e universalização de canais reversos oferecidos aos cidadãos/consumidores.

17.
Hig. aliment ; 30(260/261): 28-33, 2016. tab, graf
Artigo em Português | VETINDEX | ID: vti-684006

RESUMO

Este trabalho teve como objetivo avaliar os cardápios servidos aos pacientes em dieta livre, funcionários e acompanhantes de três hospitais públicos do município de Aracaju, Sergipe. Foi realizada uma pesquisa exploratória entre os meses de fevereiro a maio de 2015. Foram avaliados os cardápios do almoço de 30 dias, de pacientes em dieta livre, funcionários e acompanhantes, utilizando-se o método Avaliação Qualitativa das Preparações do Cardápio. Os hospitais 1 e 2 fornecem cardápios diferentes para os pacientes em dieta livre e para os funcionários/acompanhantes. O hospital 3 mantem o mesmo cardápio. Tanto no cardápio dos pacientes quanto dos funcionários / acompanhantes do hospital I observou-se repetição de cores, carnes gordurosas, oferta de doces e baixa oferta de folhosos. No cardápio dos pacientes do hospital 2 encontrou-se baixa oferta de folhosos, repetição de cores, presença de doces e carnes gordurosas. Para os funcionários/acompanhantes inadequações foram encontradas para frituras, repetição de cores e carnes gordurosas. No hospital 3 encontrou-se repetição de cores, presença de carnes gordurosas, oferta de doces e estes combinados a frituras. Faz-se necessária a implementação de medidas preventivas e corretivas, visando o fornecimento de refeições mais saudáveis e atrativas.(AU)


The present work aimed to evaluate the menu available to the patients in free diet, hospital staff and companions in three public hospitals from Sergipe, county of Aracaju. In order to that, an exploratory research was realized between February and May of 2015. Furthermore, lunch menus of patients in free diet, hospital staff and companions were evaluated during thirty days using the Qualitative Evaluation of Menu Preparations method. The hospitals 1 and 2 provide different menus to patients in free diet and to hospital staff/companions. Whereas, the hospital 3 keeps the same menu. The menu of either patients or hospital staff/companions from hospital 1 revealed a repetition of colors, fat meat, sweets and low supply of leafy. Likewise, the menu of patients from hospital 2 exhibited a low supply of leafy, repetition of colors, sweets and fat meat. In addition, the hospital staff/companions menu showed inadequacies for fried food, repetition of colors and fat meat. While the hospital 3 showed a repetition of colors, presence off at meat, sweets and sweets combined to fried food. As result, it may be necessary to implement precautionary and corrective actions, in order to supply healthier and attractive meals.(AU)


Assuntos
Hospitais Municipais , Serviços de Alimentação/normas , Planejamento de Cardápio , Refeições , Gorduras na Dieta/análise , Estudos de Avaliação como Assunto
18.
Rev Bras Ginecol Obstet ; 37(1): 16-23, 2015 Jan.
Artigo em Português | MEDLINE | ID: mdl-25607125

RESUMO

PURPOSE: To evaluate eating in postmenopausal women and its relation to anthropometry, age and time since menopause in São Bernardo do Campo residents. METHODS: During the period from June to August of 2011, 148 postmenopausal women residents in state of São Paulo (Southeast region of Brazil) were evaluated using a structured questionnaire containing socioeconomic, clinical, anthropometric and food data. The level of physical activity, biochemical variables, Body Mass Index (BMI), abdominal circumference (AC) and dietary intake (energy, protein, carbohydrates and fats, fiber, cholesterol, vitamins A and C, minerals, calcium and iron) were analyzed according to age and time after menopause. RESULTS: Mean BMI was 29.0 ≤ 5.6 kg/m(2) and abdominal circumference was 95.7 ± 12.9 cm. The average daily caloric consumption was 1,406.3 ± 476.5 kcal. The calorie intake was significantly more appropriate in normal-weight women and women with AC<88 cm. The same was observed for protein intake (p<0.001 and p=0.006, respectively). No association was observed with age or duration of the postmenopausal period, except for average protein consumption that was higher in the group with five years or less of menopause (p=0.048). CONCLUSION: The anthropometry of postmenopausal women showed a predominance of overweight and obesity. Dietary intake was adequate in relation to the percentage of calories and macronutrients and calories among most normal-weight women and women with AC<88 cm.


Assuntos
Pesos e Medidas Corporais , Dieta , Ingestão de Alimentos , Pós-Menopausa , Índice de Massa Corporal , Feminino , Humanos , Pessoa de Meia-Idade , Fatores de Tempo
19.
Rev. bras. ginecol. obstet ; Rev. bras. ginecol. obstet;37(1): 16-23, 01/2015. tab
Artigo em Português | LILACS | ID: lil-732876

RESUMO

OBJETIVO: Avaliar o hábito alimentar e nutricional de mulheres na pós-menopausa e compará-los com o perfil antropométrico, faixa etária e tempo de menopausa. MÉTODOS: No período de junho a agosto de 2011, 148 mulheres na pós-menopausa residentes no Estado de São Paulo (região Sudeste do Brasil) foram avaliadas com um questionário estruturado contendo dados socioeconômicos, clínicos, antropométricos e alimentares. Avaliou-se nível de atividade física, variáveis bioquímicas, Índice de Massa Corporal (IMC), circunferência abdominal (CA) e consumo alimentar (energia, proteínas, carboidratos e gorduras, fibra, colesterol, vitaminas A e C, minerais, cálcio e ferro) de acordo com a faixa etária e o tempo de pós-menopausa (TPM). RESULTADOS: A média de IMC foi 29,0±5,6 kg/m2 e da CA, 95,7±12,9 cm. O consumo médio calórico diário atingiu 1.406,3±476,5 kcal. A ingestão e a adequação calórica foram significantemente mais apropriadas entre as mulheres eutróficas e com CA<88 cm. O mesmo ocorreu quanto ao consumo de proteínas (p<0,001 e p=0,006, respectivamente). Na análise por faixa etária ou TPM não houve diferenças significantes, exceto a média do consumo proteico, maior no grupo com 5 anos ou menos de menopausa (p=0,048). CONCLUSÃO: O perfil antropométrico de mulheres na pós-menopausa mostrou predominância de sobrepeso ou obesidade. O consumo alimentar apresentou-se adequado quanto às calorias e percentuais de macronutrientes, entre as eutróficas e com CA<88 cm. .


PURPOSE: To evaluate eating in postmenopausal women and its relation to anthropometry, age and time since menopause in São Bernardo do Campo residents. METHODS: During the period from June to August of 2011, 148 postmenopausal women residents in state of São Paulo (Southeast region of Brazil) were evaluated using a structured questionnaire containing socioeconomic, clinical, anthropometric and food data. The level of physical activity, biochemical variables, Body Mass Index (BMI), abdominal circumference (AC) and dietary intake (energy, protein, carbohydrates and fats, fiber, cholesterol, vitamins A and C, minerals, calcium and iron) were analyzed according to age and time after menopause. RESULTS: Mean BMI was 29.0≤5.6 kg/m2 and abdominal circumference was 95.7±12.9 cm. The average daily caloric consumption was 1,406.3±476.5 kcal. The calorie intake was significantly more appropriate in normal-weight women and women with AC<88 cm. The same was observed for protein intake (p<0.001 and p=0.006, respectively). No association was observed with age or duration of the postmenopausal period, except for average protein consumption that was higher in the group with five years or less of menopause (p=0.048). CONCLUSION: The anthropometry of postmenopausal women showed a predominance of overweight and obesity. Dietary intake was adequate in relation to the percentage of calories and macronutrients and calories among most normal-weight women and women with AC<88 cm. .


Assuntos
Humanos , Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Citocinas/biossíntese , Floxuridina/uso terapêutico , Picibanil/uso terapêutico , Neoplasias Gástricas/tratamento farmacológico , Timidina Fosforilase/biossíntese , Antineoplásicos/administração & dosagem , Indução Enzimática , Floxuridina/administração & dosagem , Gastrectomia , Expressão Gênica , Interleucina-1/biossíntese , Invasividade Neoplásica , Estadiamento de Neoplasias , Picibanil/administração & dosagem , Neoplasias Gástricas/patologia , Neoplasias Gástricas/fisiopatologia , Neoplasias Gástricas/cirurgia , Estômago/patologia , Fator de Necrose Tumoral alfa/biossíntese
20.
Braz. dent. sci ; 18(3): 84-89, 2015. tab
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-772995

RESUMO

Objetivo: Avaliar a influência da exposição a um creme dental acidulado sobre a liberação de flúorde Cimentos de Ionômero de Vidro (CIV). Material e Métodos: Confeccionou-se 27 corpos de prova divididos em 3 grupos: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) e G3 (Vittremer 3M/ESPE), subdividido em subgrupos (n = 3): A (exposição ao creme dental flúor acidulado – pH 4,5 / 7 h / 37ºC), B (exposição ao creme dental fluoretado não acidulado / 7 h / 37 ºC) e C (controle - exposição à saliva artificial). Após exposição aos cremes dentais,os corpos de prova foram imersos em saliva artificial e aferidas a liberação de flúor nos períodos de tempo:1 e 14 dias. Os dados obtidos foram submetidos a análise de variância, utilizando o pacote SPSS (Statiscal Package for Social Science). Aplicou-se seo Teste ANOVA com 5% de probabilidade, para comparação das médias e do comportamento de cada material. Resultados: A exposição ao creme dental ácido apresentou valores de liberação de flúor (ppm/mm2) que variaram, em suas médias, de 1 e 14 dias:G1A (0,269 a 0,204); G2A (0,394 a 0,038); G3A(0,080 a 0,123). Foi estatisticamente significante a relação entre os subgrupos para G1 em T1 e G3 emT1 e T14. Conclusão: a exposição ao creme dental acidulado influenciou positivamente a liberação de flúor do CIV híbrido testado e não impactou a liberação deste íon nos CIVs convencionais.


Objectives: To evaluate the acidulated dentifrice influence on fluoride releasing from glass-ionomercements. Methods: 27 specimens were constructed,divided into 3 groups: G1 (Maxion - R), G2 (KetacMolar 3M/ESPE) and G3 (Vittremer 3M/ESPE), and subdivided into 3 subgroups (n = 3): A (exposure to acidulated fluoride dentifrice – pH 4.5 / 7h /37 ºC), B (exposure to non-acidulated fluoridedentifrice / 7h / 37 ºC), C (control - exposure toartificial saliva). After exposing, the specimens were immersed into artificial saliva and the fluoridere leasing measured at the following time periods:1 to 14 days. Data were subjected to analysis ofvariance using the Statistical Package for Social Science (SPSS). ANOVA test was applied with levelof significance of 5% to compare the means and the behavior of each material. Results: The exposure to acidulated dentifrice showed fluoride releasing means values (ppm/mm2) that varied from 1 and 14days : G1A (0.269 to 0.204); G2A (0.394 to 0.038);G3A (0.080 to 0.123). The relationship among the G1 subgroups at T1 and G3 subgroups at T1and T14 was statistically significant. Conclusion:The acidulated dentifrice positively influenced onfluoride releasing of hybrid GIC but not on that ofconventional GICs.


Assuntos
Flúor , Cimentos de Ionômeros de Vidro , Cremes Dentais , Teste de Materiais , Saliva Artificial
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