1,465 research outputs found
Defining the interaction of the protease CpaA with its type II secretion chaperone CpaB and its contribution to virulence in Acinetobacter species
Do Exergames Allow Children To Achieve Physical Activity Intensity Commensurate With National Guidelines?
The purpose of this study was to determine if two popular exergames, Wii Fit™ and EA Sports Active™, both games for the Nintendo Wii™ console, help children achieve intensity consistent with recommended physical activity guidelines. Thirty children (19 males and 11 females, Mean age = 9.4 ± 1.8 years) participated in this study by playing each game during one research session. During the session participants wore a heart rate monitor and accelerometer to measure exercise intensity. Perceived exertion (RPE) was measured with the children’s run/walk OMNI scale. All three measures of exercise intensity (heart rate, accelerometer counts, and RPE) found that the EA Sports Active™ game session elicited higher exercise intensity. However, heart rate data found both games to achieve moderate intensity (65-68% age-predicted HRmax). When using heart rate as an indicator of exercise intensity it appears that both exergames were of sufficient intensity to achieve physical activity guidelines. Future studies should continue to investigate the utility of exergaming in helping children to become more physically active
Permeabilization of the Blood-Brain Barrier via Mucosal Engrafting: Implications for Drug Delivery to the Brain
Utilization of neuropharmaceuticals for central nervous system(CNS) disease is highly limited due to the blood-brain barrier(BBB) which restricts molecules larger than 500Da from reaching the CNS. The development of a reliable method to bypass the BBB would represent an enormous advance in neuropharmacology enabling the use of many potential disease modifying therapies. Previous attempts such as transcranial catheter implantation have proven to be temporary and associated with multiple complications. Here we describe a novel method of creating a semipermeable window in the BBB using purely autologous tissues to allow for high molecular weight(HMW) drug delivery to the CNS. This approach is inspired by recent advances in human endoscopic transnasal skull base surgical techniques and involves engrafting semipermeable nasal mucosa within a surgical defect in the BBB. The mucosal graft thereby creates a permanent transmucosal conduit for drugs to access the CNS. The main objective of this study was to develop a murine model of this technique and use it to evaluate transmucosal permeability for the purpose of direct drug delivery to the brain. Using this model we demonstrate that mucosal grafts allow for the transport of molecules up to 500 kDa directly to the brain in both a time and molecular weight dependent fashion. Markers up to 40 kDa were found within the striatum suggesting a potential role for this technique in the treatment of Parkinson’s disease. This proof of principle study demonstrates that mucosal engrafting represents the first permanent and stable method of bypassing the BBB thereby providing a pathway for HMW therapeutics directly into the CNS
A platform for glycoengineering a polyvalent pneumococcal bioconjugate vaccine using E. coli as a host
Assessing knowledge on fibromyalgia among internet users
OBJECTIVE: To assess knowledge on fibromyalgia in a sample of patients, their families, and professionals interested on the theme from some Brazilian states. METHODS: Analysis of the results of an electronic fibromyalgia knowledge questionnaire completed by 362 adults who had access to the the support group for fibromyalgia site (www.unifesp.br/grupos/fibromialgia). The answers were grouped according to age, sex, years of schooling, and type of interest in the condition. RESULTS: 92% of the responders were women and 62% had higher educational level. The worst results were observed in the joint protection and energy conservation domain, followed by the medication in fibromyalgia domain. The best results were recorded in the exercises in fibromyalgia domain. The answers differed significantly between sexes, and women achieved a higher percentage of correct answers. The female sex accounted for a statistically superior result in five statistical analyses (four questions and one domain). CONCLUSIONS: The study suggests the need for a strategic planning for an educational approach to fibromyalgia in BrazilOBJETIVO: Analisar o nível de conhecimento sobre fibromialgia em uma amostra incluindo pacientes, familiares e profissionais de vários estados do Brasil. MÉTODOS: Análise dos resultados de 362 adultos que acessaram o site do Grupo de Apoio à Fibromialgia (www.unifesp.br/grupos/fibromialgia) e responderam a um questionário eletrônico de conhecimento sobre a síndrome. As respostas foram avaliadas em relação a idade, sexo, nível de escolaridade e tipo de interesse no Grupo. RESULTADOS: 92% eram mulheres e 62% haviam completado o ensino superior. O pior resultado foi no domínio proteção articular e conservação de energia, seguido pelo domínio conhecimento sobre medicação. O melhor resultado ocorreu no domínio exercícios para fibromialgia. Houve diferença significativa entre os gêneros, sendo as mulheres responsáveis por um porcentual maior de acertos. O gênero feminino foi responsável por um resultado estatisticamente superior em cinco análises estatísticas (quatro perguntas e um domínio). CONCLUSÕES: O estudo sugere a necessidade de um planejamento estratégico para ações educativas sobre fibromialgia no BrasilUNIFESP Centro Cochrane do BrasilUniversidade Federal do ABCUNIFESPCentro CochraneUNIFESP, Centro Cochrane do BrasilUNIFESPSciEL
Medically relevant Acinetobacter species require a type II secretion system and specific membrane-associated chaperones for the export of multiple substrates and full virulence
Acinetobacter baumannii, A. nosocomialis, and A. pittii have recently emerged as opportunistic human pathogens capable of causing severe human disease; however, the molecular mechanisms employed by Acinetobacter to cause disease remain poorly understood. Many pathogenic members of the genus Acinetobacter contain genes predicted to encode proteins required for the biogenesis of a type II secretion system (T2SS), which have been shown to mediate virulence in many Gram-negative organisms. Here we demonstrate that Acinetobacter nosocomialis strain M2 produces a functional T2SS, which is required for full virulence in both the Galleria mellonella and murine pulmonary infection models. Importantly, this is the first bona fide secretion system shown to be required for virulence in Acinetobacter. Using bioinformatics, proteomics, and mutational analyses, we show that Acinetobacter employs its T2SS to export multiple substrates, including the lipases LipA and LipH as well as the protease CpaA. Furthermore, the Acinetobacter T2SS, which is found scattered amongst five distinct loci, does not contain a dedicated pseudopilin peptidase, but instead relies on the type IV prepilin peptidase, reinforcing the common ancestry of these two systems. Lastly, two of the three secreted proteins characterized in this study require specific chaperones for secretion. These chaperones contain an N-terminal transmembrane domain, are encoded adjacently to their cognate effector, and their disruption abolishes type II secretion of their cognate effector. Bioinformatic analysis identified putative chaperones located adjacent to multiple previously known type II effectors from several Gram-negative bacteria, which suggests that T2SS chaperones constitute a separate class of membrane-associated chaperones mediating type II secretion
Reactions of Faith Groups to Hate Speech on Campus and Subsequent University Responses
Nationally, hate crimes committed against an individual because of their faith have been on the rise since 2014. In Northwest Ohio alone, the incidence of reported hate crimes as doubled. This study focused on students of many different faiths who have experienced hate speech on Bowling Green State University\u27s campus. It also addressed past university responses to these incidents and whether students felt supported by these efforts. Two research questions were addressed in this study: Have students experienced hate speech on campus that was directly linked to their religious preference? Does Bowling Green State University need to change its reaction towards hate speech on campus? The study was conducted using three focus groups, which placed an emphasis on civil discourse. A series of six questions were asked during the focus groups. Participants were all undergraduate students from Bowling Green State University and came from varied religious backgrounds. Of the nine participants, two students who identified themselves as members of religious minorities had experienced bias incidents because of their faith. However, neither participant identified these incidents as hate speech, as they felt the intent of the comments was not to harm. Overall, the participants believed that the university has taken appropriate action when hate speech has appeared on campus. Despite this positive reaction, participants had three suggestions for the University to improve its policies: emails sent by the administration about major religious holidays, a mandatory diversity training module for first-year students, and a class or discussion series on civil discourse
A summary of the 2012 JHU CLSP Workshop on Zero Resource Speech Technologies and Models of Early Language Acquisition
We summarize the accomplishments of a multi-disciplinary workshop exploring the computational and scientific issues surrounding zero resource (unsupervised) speech technologies and related models of early language acquisition. Centered around the tasks of phonetic and lexical discovery, we consider unified evaluation metrics, present two new approaches for improving speaker independence in the absence of supervision, and evaluate the application of Bayesian word segmentation algorithms to automatic subword unit tokenizations. Finally, we present two strategies for integrating zero resource techniques into supervised settings, demonstrating the potential of unsupervised methods to improve mainstream technologies.5 page(s
I am the Robot. Are You?
I was originally inspired by a previous project in a 3D modeling class. For my final project, I designed two robots; male and female; who’s naked bodied reflected the presence of technological communications in society and lack of face-to-face interactions. I displayed the robots in a variety of sexual positions, which appear cute or sweet to the viewer because of the toon-shader effect. The toon-shader effect makes the 3D models look like cartoons. I loved combining the idea of technology, robotics, and sex into one. To this day, the poster of the robots in my room always gets a response. I took this idea and decided to expand upon it for my visual arts thesis by creating a more detailed female robot, which would embody my views on the perception of women in society and how I feel that I fit in to these perceptions. Aspects of the robot reflect my views on what I believe the perfect woman would be. In my mind she is strong yet feminine and delicate. She is powerful and takes charge of her own life. She is carefree and unaffected by the opinions of others. She is hardworking and street smart. These are all characteristics that I have and others I aspire to attain. The scenes I have created are parodies on gender roles, shared life experiences, controversial topics or genres, and otherwise taboo scenarios
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