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Monalessa Fábia Pereira,Carolina Maria de Araújo dos Santos,Elza Fernandes de Araújo,Marisa Vieira de Queiroz,Denise Mara Soares Bazzolli 한국미생물학회 2013 The journal of microbiology Vol.51 No.1
Fungi of the Colletotrichum genus are among the most prominent phytopathogens that cause diseases with a considerable economic impact, such as anthracnose. The hemibiotrophic fungus Colletotrichum lindemuthianum (teleomorph Glomerella cingulata f. sp. phaseoli) is the causal agent of the anthracnose of the common bean; and similarly to other phytopathogens, it uses multiple strategies to gain access to different carbon sources from its host. In this study, we examine mfs1, a newly identified C. lindemuthianum hexose transporter. The mfs1 gene is expressed only during the necrotrophic phase of the fungus’ interaction within the plant and allows it to utilize the available sugars during this phase. The deletion of mfs1 gene resulted in differential growth of the fungus in a medium that contained glucose, mannose or fructose as the only carbon source. This study is the first to describe a hexose transporter in the hemibiotrophic pathogen C. lindemuthianum and to demonstrate the central role of this protein in capturing carbon sources during the necrotrophic development of the plant/pathogen interaction.
Nathalie Almeida Lopes,Rafael Diaz Remedi,Carolina dos Santos Sa,Carlos Andre´ Veiga Burkert,Janaina Fernandes de Medeiros Burkert 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.3
Since carotenoids are synthesized inside the cell, it is desirable to find an efficient method to extract carotegenic pigments. This study aimed at comparing the effectiveness of different chemical and mechanical techniques to disrupt the cell wall of Sporidiobolus pararoseus and Rhodotorula mucilaginosa yeasts isolated from environmental samples. Among the techniques under study, the ultrasonic bath and the abrasion with glass beads yielded the most promising results for S. pararoseus (84.8 ± 2.3 and 76.9 ± 2.1 lg/g, respectively). The ultrasonic bath yielded the highest specific concentration of carotenoids for R. mucilaginosa (193.5 ± 25.8 lg/g), while the biomass freezing process improved neither the extractability nor the specific concentration of carotenoids. Lyophilization increased the specific concentrations of carotenoids from S. pararoseus and R. mucilaginosa by 20 and 13.7%, respectively, while the freezing process did not significantly affect (p[0.05) the recovery of carotenoids from both yeasts; thus, it may be eliminated from the process.
A Preliminary Study on qEEG in Burn Patients With Chronic Pruritus
Fiorella K. Miraval,Vivian L. Shie,Leon Morales-Quezada,Carolina Santiago,Bianca Fernandes-Marcondes,Deborah Nadler,Colleen M. Ryan,Jeffrey C. Schneider,Felipe Fregni 대한재활의학회 2017 Annals of Rehabilitation Medicine Vol.41 No.4
Objective To explore and determine the reorganizational changes in the cortical neural circuits associated with pruritis, this study was undertaken to compare the electroencephalography (EEG) changes in burn patients having primary symptoms of chronic itching (pruritis) and their paired healthy subjects. Methods Eight subjects were recruited for this exploratory pilot study: 4 patients with pruritus after burn injury matched by gender and age with 4 healthy subjects. EEG recordings were analyzed for absolute alpha, low beta, high beta, and theta power for both groups. Results The mean age of the burn patients was 41.75 years; while the mean age for the matched healthy subjects was 41.5 years. All subjects were male. A decreased alpha activity was observed in the occipital channels (0.82 vs. 1.4; p=0.01) and a decreased low beta activity in the frontal area (0.22 vs. 0.4; p=0.049) in eyes closed conditions. An overall decreased theta trend was observed in both the eyes open and eyes closed conditions in burn patients, compared to healthy individuals.Conclusion This preliminary study presents initial evidence that chronic pruritus in burn subjects may be associated with brain reorganizational changes at the cortical level characterized by an EEG pattern.
Yacon Flour and Bifidobacterium longum Modulate Bone Health in Rats
Fabiana Carvalho Rodrigues,Adriano Simo˜es Barbosa Castro,Vı´vian Carolina Rodrigues,Se´rgio Antoˆnio Fernandes,Edimar Aparecida Filomeno Fontes,Taˆnia Toledo de Oliveira,He´rcia Stampini Duarte Marti 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.7
Yacon flour has been considered a food with prebiotic potential because of the high levels of fructooligosaccharides, which allows for its use in formulating synbiotic foods. The purpose of this study was to evaluate the effect of yacon flour and probiotic (Bifidobacterium longum) on the modulation of variables related to bone health. Thirty-two Wistar rats were divided into 4 groups: control, yacon flour, diet + B. longum, and yacon flour + B. longum. After euthanasia, the bones were removed for analysis of biomechanical properties (thickness, length, and strength of fracture) and mineral content (Ca, Mg, and P); the cecum was removed for analysis of the microbiota and short-chain fatty acids. Tibia Ca, P, and Mg content was significantly (P < .05) higher in groups fed diet + B. longum, yacon flour + B. longum than in the control group. An increase in fracture strength was observed in the yacon flour (8.1%), diet + B. longum (8.6%), and yacon flour + B. longum (14.6%) in comparison to the control group. Total anaerobe and weight of the cecum were higher (P < .05) in rats consuming the yacon flour diet compared with the other groups. Cecal concentration of propionate was higher in all experimental groups compared with the control (P < .05). Yacon flour in combination with B. longum helped increase the concentration of minerals in bones, an important factor in the prevention of diseases such as osteoporosis.