Résumé
Carboxyl CoA ligases(CCLs) is an important branch of adenylate synthetase gene family, which mainly has two-step catalytic reactions. Firstly, in the presence of adenosine triphosphate, it can catalyze the pyrophosphorylation of carboxylateswith diffe-rent structures to form corresponding acyl adenosine monophosphate intermediates. Secondly, adenosine monophosphate was replaced by free electrons in the mercaptan group of enzyme A or other acyl receptors by nucleophilic attack to form thioesters. In this study, on the basis of the transcriptome database of Arnebia euchroma, two genes were selected, named AeCCL5(XP_019237476.1) and AeCCL7(XP_019237476.1). Bioinformatics analysis showed that their relative molecular weights were 60.569 kDa and 60.928 kDa, theoretical PI were 8.59 and 8.92, respectively. They both have transmembrane domains but without signal peptide. By multiple sequence alignment and phylogenetic tree analysis, we found that the similarity between AeCCLs and other plant homologous proteins was not high, and the substrate binding sites of AeCCLs were not highly conserved. The reasons might be that the sequence and structure need to adapt to the changes of new substrates in the process of evolution. In this study, the full-length of AeCCL5 and AecCCL7 were cloned into the expression vector pCDFDuet-1. The proteins of AeCCL5 and AeCCL7 with His-tag were expressed in Escherichia coli. The proteins of AeCCL5 and AeCCL7 were purified by nickel column. In vitro enzymatic reactions proved that both AeCCL5 and AeCCL7 can participate in the upstream phenylpropane pathway of shikonin biosynthesisby catalyzing 4-coumaric acid to produce 4-coumarin-CoA, and then to synthesis p-hydroxybenzoic acid, which is an important precursor of shikonin biosynthesis in A. euchroma.
Sujets)
Boraginaceae/génétique , Clonage moléculaire , Coenzyme A , Coenzyme A ligases/génétique , Ligases , PhylogenèseRésumé
ABSTRACT Neurodegeneration with brain iron accumulation (NBIA) represents a heterogeneous and complex group of inherited neurodegenerative diseases, characterized by excessive iron accumulation, particularly in the basal ganglia. Common clinical features of NBIA include movement disorders, particularly parkinsonism and dystonia, cognitive dysfunction, pyramidal signs, and retinal abnormalities. The forms of NBIA described to date include pantothenase kinase-associated neurodegeneration (PKAN), phospholipase A2 associated neurodegeneration (PLAN), neuroferritinopathy, aceruloplasminemia, beta-propeller protein-associated neurodegeneration (BPAN), Kufor-Rakeb syndrome, mitochondrial membrane protein-associated neurodegeneration (MPAN), fatty acid hydroxylase-associated neurodegeneration (FAHN), coenzyme A synthase protein-associated neurodegeneration (CoPAN) and Woodhouse-Sakati syndrome. This review is a diagnostic approach for NBIA cases, from clinical features and brain imaging findings to the genetic etiology.
RESUMO A neurodegeneração com acúmulo cerebral de ferro (sigla em inglês NBIA) representa um grupo heterogêneo e complexo de doenças neurodegenerativas hereditárias, caracterizada pelo acúmulo cerebral de ferro, especialmente nos núcleos da base. O quadro clínico das NBIAs em geral inclui distúrbios do movimento, particularmente parkinsonismo e distonia, disfunção cognitiva, sinais piramidais e anormalidades da retina. As formas de NBIA descritas até o momento incluem neurodegeneração associada a pantothenase kinase (PKAN), neurodegeneração associada a phospholipase A2 (PLAN), neuroferritinopatia, aceruloplasminemia, neurodegeneração associada a beta-propeller protein (BPAN), síndrome de Kufor-Rakeb, neurodegeneração associada a mitochondrial membrane protein (MPAN), neurodegeneração associada a “fatty acid hydroxylase” (FAHN), neurodegeneração associada a coenzyme A synthase protein (CoPAN) e síndrome de Woodhouse-Sakati. Esta revisão é uma orientação para o diagnóstico das NBIAs, partindo das características clínicas e achados de neuroimagem, até a etiologia genética.
Sujets)
Humains , Dystrophies neuroaxonales/génétique , Dystrophies neuroaxonales/imagerie diagnostique , Troubles du métabolisme du fer/génétique , Troubles du métabolisme du fer/imagerie diagnostique , Neuroimagerie/méthodes , Mutation , Troubles du rythme cardiaque/génétique , Troubles du rythme cardiaque/imagerie diagnostique , Affections des ganglions de la base/génétique , Affections des ganglions de la base/imagerie diagnostique , Céruloplasmine/déficit , Céruloplasmine/génétique , Coenzyme A ligases/génétique , Maladies neurodégénératives héréditaires/génétique , Maladies neurodégénératives héréditaires/imagerie diagnostique , Diabète/génétique , Diabète/imagerie diagnostique , Alopécie/génétique , Alopécie/imagerie diagnostique , Hypogonadisme/génétique , Hypogonadisme/imagerie diagnostiqueRésumé
Temporomandibular disorder (TMD) is a common condition. This study is part of a research group and it investigated the prevalence of TMD and myofascial pain and its association with gender, age and socioeconomic class. The sample comprised 100 subjects, aged 15 to 70, users of the Family Health Units' services, in the city of Recife, PE, Brazil. The TMD degree was evaluated using the Research Diagnostic Criteria for TMD and socioeconomic class by the Economic Classification Criteria Brazil. Categorical variables were analyzed by chi-square test for proportions and Fisher's exact test for 2x2 tables, and binary logistic analysis to track the relationship between the independent and dependent variables. According to the results, 42% of the subjects had TMD and 14% myofascial pain. No statistically significant association could be found between TMD and gender or socioeconomic class, but it was found to have statistically significant association with age, and myofascial pain was associated with socioeconomic class. Considering that the results of the present study should be confirmed by further studies and the fact that this was a pilot study, the prevalence must be analyzed with caution.
Disfunção temporomandibular (DTM) é uma condição comum. Este estudo é parte de um grupo de pesquisa e investigou a prevalência de DTM e dor miofascial e suas associações com sexo, idade e classe socioeconômica. A amostra foi composta por 100 indivíduos, com idades entre 15 e 70 anos, usuários das Unidades de Saúde da Família, na cidade de Recife, PE. O grau de DTM foi avaliado usando os Critérios de Diagnósticos Científicos em DTM, e classe socioeconômica com o Critério de Classificação Econômica Brasil. As variáveis categóricas foram analisadas pelo teste do qui-quadrado para proporções e teste exato de Fisher para tabelas 2x2, e a análise logística binária para traçar a relação entre as variáveis independentes e dependentes. De acordo com os resultados, 42% dos indivíduos tinham DTM e 14% dor miofascial. Não houve associação estatisticamente significativa entre DTM e sexo ou classe socioeconômica, mas houve associação estatisticamente significativa com a idade e a dor miofascial foi associada com a classe socioeconômica. Considerando-se que os resultados do presente estudo devam ser confirmados em outros estudos e por causa de sua natureza piloto, a prevalência deve ser analisada com cautela.
Sujets)
Régulation de l'expression des gènes bactériens , Opéron , Phénylacétates/métabolisme , Pseudomonas putida/génétique , Pseudomonas putida/croissance et développement , Techniques de culture cellulaire , Division cellulaire , Milieux de culture , Carbone/métabolisme , Coenzyme A ligases/biosynthèse , Coenzyme A ligases/génétique , Produits chimiques inorganiques/métabolisme , Oxygénases/biosynthèse , Oxygénases/génétique , Pseudomonas putida/métabolisme , Reproductibilité des résultats , Acide succinique/métabolisme , Activation de la transcriptionRésumé
Affective, cognitive and behavioral components affect nurses´ attitudes to include families in the care processes. The purpose of this study was to investigate the attitudes of nurses about the importance of including families in nursing care. Data collection was performed in pediatric and maternal-child unit of a Brazilian university hospital. A sample of 50 nurses completed the Portuguese version of the instrument Families’Importance in Nursing Care-Nurses’ Attitudes (FINC-NA). The results indicated that nurses have supportive attitudes regarding families participation in nursing care. Attitudes of lower support for involving families in nursing care were found among nurses with older age, more time in the profession and who had no previous contact with contents related to Family Nursing. The application of the instrument in other contexts of assistance may help to illuminate important aspects of the challenges to implementing a family-centered approach in clinical practice. .
El propósito de este estudio fue identificar las actitudes de los enfermeros sobre la importancia de incluir a las familias en el cuidado de enfermería. La recolección de datos se llevó a cabo en las unidades de pediatría y materno-infantil de un hospital universitario brasileño. Una muestra de 50 enfermeras completó la versión en portugués del el instrumento Families’ Importance in Nursing Care-Nurses’ Attitudes (FINC-NA). Los resultados indicaron las puntuaciones más altas en dimensiones indicativas de actitudes de apoyo a la participación de las familias en el cuidado. Enfermeras con más tiempo en la profesión y que no tenían conocimiento previo de enfermería de familia tuvieron puntuaciones que indican actitudes de menor apoyo para involucrar a las familias en el cuidado de enfermería. La aplicación de este instrumento en otro tipo de asistencia contextos puede ayudar a iluminar aspectos importantes de los desafíos para la implementación de un enfoque centrado en la familia, en la práctica clínica. .
Objetivo Identificar as atitudes dos enfermeiros sobre a importância de incluir as famílias nos cuidados de enfermagem. Método Estudo de abordagem quantitativa descritiva, cuja coleta de dados foi realizada em unidades de pediatria e materno-infantil de um hospital universitário brasileiro. Uma amostra de 50 enfermeiros completou a versão em português da escala Families Importance in Nursing Care-Nurses Attitudes (FINC-NA). Resultados Indicaram escores mais elevados em dimensões indicativas de atitudes de apoio sobre a participação das famílias no cuidado de enfermagem. Enfermeiros com mais tempo na profissão e que não tiveram conhecimento prévio de enfermagem da família apresentaram escores indicativos de atitudes de menor apoio para envolver as famílias no cuidado de enfermagem. Conclusão A aplicação desse instrumento em outros contextos de assistência poderá contribuir para iluminar importantes aspectos relacionados aos desafios para a implementação de uma abordagem centrada na família na prática clínica e subsidiar o desenvolvimento de pesquisas mais amplas. .
Sujets)
Azoarcus/métabolisme , Coenzyme A ligases/génétique , Phénylacétates/métabolisme , Aérobiose , Azoarcus/génétique , Coenzyme A ligases/métabolisme , Immunotransfert , Mutation , Protéines de fusion recombinantes/génétique , Analyse de séquence d'ADN , beta-Galactosidase/génétiqueRésumé
Background: 4-coumarate:CoA ligase (4CL) plays an important role at the divergence point from general phenylpropanoid metabolism to several branch pathways. Although 4CL sin higher plants have been extensively studied, little has known about the 4CL gene of bamboo. Results: In current study, a Na4CL gene putative encoding 4-coumarate:CoA ligase (4CL) and its 5-flanking region were isolated from bamboo (Neosinocalamus affinis) by RACE-PCR and genomic DNA walker, respectively. Na4CL encodes a predicted protein of 557 amino acids, with conserved motifs of adenylate-forming enzymes. Phylogenetic analysis showed that Na4CL shared 62~85 percent identity with other known plant 4CLs, and cluster closely with some known 4CLs in monocots. Sequence analysis revealed conserved cis-acting elements (Box A and AC-II element) present in the Na4CL promoter. Additionally, a Na4CL RNAi construct was transformed into tobacco. Transgenic tobaccos displayed significant down-expression of endogenesis 4CL and reduced lignin contents. Conclusion: These results contribute to the knowledge of the presence of Na4CL gene and its possible role in phenylpropanoid metabolism.