Universidade Estadual de Londrina

About: Universidade Estadual de Londrina is a education organization based out in Londrina, Brazil. It is known for research contribution in the topics: Population & Context (language use). The organization has 13052 authors who have published 19291 publications receiving 212123 citations.

Analysis by RAPD of the genetic structure of Astyanax altiparanae (Pisces, Characiformes) in reservoirs on the Paranapanema River, Brazil

Abstract: In this study, the RAPD technique was used to analyze the genetic structure of populations of the fish Astyanax altiparanae (Characidae, Tetragonopterinae) living in the lower, middle and upper Paranapanema River, Brazil. The aim was to assess this structure regarding fish handling and conservation programs. The genetic variability (P) was found to be 42.64%, 75% and 75% in the low, middle and upper reaches, respectively. The dendrogram of genetic similarity, obtained by comparative analysis of the sets of samples from the three sites, showed the formation of three clusters. All of the genetic parameters used indicate that the population in the lower Paranapanema is genetically different from those in the middle and upper sections. The theta P test shows that the low Paranapanema is highly differentiated from the middle (0.2813) and upper (0.2912) Paranapanema, while the differentiation between the last two is moderate (0.0895). The data obtained in the present work suggest that recolonization and conservation studies should not be focused on the species A. altiparanae as such, but on the conservation units, because they are the genetically differentiated populations.

Diagnóstico da aptidão física em escolares de alto nível socioeconômico: avaliação referenciada por critérios de saúde

Abstract: A pratica regular de atividades fisicas sistematizadas na infância e na adolescencia pode favorecer sobremaneira o desenvolvimento ou a manutencao de niveis adequados de aptidao fisica, reduzindo o risco de incidencia de inumeras disfuncoes cronico-degenerativas em idades precoces. Assim, o proposito deste estudo foi analisar a adiposidade corporal e o desempenho motor em criancas de alto nivel socioeconomico, de acordo com uma avaliacao referenciada por criterios de saude. Para tanto, 511 escolares (274 meninos e 237 meninas) de sete a 10 anos, foram submetidos a medidas antropometricas de massa corporal, estatura e espessuras de dobras cutâneas (tricipital e subescapular) e aos seguintes testes motores: sentar e alcancar (SA), abdominal modificado (ABD) e corrida/caminhada de nove minutos (9MIN). As informacoes foram analisadas de acordo com os pontos de corte sugeridos pelo Physical Best (1988). Com relacao a adiposidade corporal, verificou-se maior contingente de escolares acima (33% dos meninos e 15% das meninas, P 0,05) alcancaram os pontos de corte adotados. Quando analisados conjuntamente, constatou-se que somente 15% dos meninos e 21% das meninas (P > 0,05) apresentaram resultados satisfatorios nos tres testes motores utilizados. A alta prevalencia de criancas que se situaram acima do criterio de saude para quantidade de gordura corporal, associada a baixa proporcao de sujeitos que atenderam aos criterios estabelecidos no conjunto dos testes motores utilizados, indica que o nivel de aptidao fisica encontrado nos escolares investigados esta bastante aquem do desejavel. Os resultados sugerem a necessidade do desenvolvimento de programas de educacao para a saude que estimulem a participacao mais efetiva de jovens em programas de exercicios fisicos e esportes de diferentes naturezas, sobretudo no segmento escolar, no qual grande parte dos habitos de vida sao estabelecidos.

Influence of the degree of hydrolysis and type of enzyme on antioxidant activity of okara protein hydrolysates

Abstract: The objective of this work was to evaluate the antioxidant activity of protein hydrolysates obtained by the enzymatic hydrolysis of okara using an endopeptidase (Alcalase) and exopeptidase (Flavourzyme). The reaction was monitored by the pH-stat procedure in which five aliquots were collected during the hydrolysis by each enzyme, corresponding to different degrees of hydrolysis (DH). The antioxidant activities of the aliquots were evaluated by the ABTS, DPPH and FRAP methods. For the hydrolysates obtained using Alcalase, the antioxidant activities increased from: 68.6 to 99.5% (ABTS), 14.5 to 17.7% (DPPH) and 222.6 to 684.9 µM Trolox (FRAP), when the DH varied from 0 to 33.6%. With respect to Flavourzyme, the results were: 67.2 to 88.2% (ABTS), 9.5 to 18.5% (DPPH) and 168.0 to 360.3 µM Trolox (FRAP), when the DH increased up to 5.8%. The results showed that the protein hydrolysates had antioxidant capacities, which were influenced by the degree of hydrolysis and the type of enzyme.

Diretrizes da Sociedade Brasileira de Cardiologia sobre Angina Instável e Infarto Agudo do Miocárdio sem Supradesnível do Segmento ST – 2021

Abstract: Diretrizes da Sociedade Brasileira de Cardiologia sobre Angina Instavel e Infarto Agudo do Miocardio sem Supradesnivel do Segmento ST – 2021