174 research outputs found

    Sandia Pueblo: Persistence and Change in a New Mexican Indian Community

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    The dissertation has a twofold purpose: to redress the lacuna in the social anthropological literature with respect to the Tiwa-speaking pueblo of Sandia, New Mexico, and to account for the persistence of this traditionally oriented community despite dependence upon a complex industrial society which is potentially conducive to sociocultural disorganization. To accomplish this dual aim, field work was conducted at Sandia for two and one-half years, during which observations were made of contemporary pueblo social relations and lengthy interviews were conducted with selected residents

    Metabolism of Glycitein (7,4-Dihydroxy-6-methoxy-isoflavone) by Human Gut Microflora

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    Gut microbial disappearance and metabolism of the soy isoflavone glycitein, 7,4‘-dihydroxy-6-methoxyisoflavone, were investigated by incubating glycitein anaerobically with feces from 12 human subjects. The subjects\u27 ages ranged from 24 to 53 years with a body mass index (BMI) of 20.9−25.8 kg/m2 (mean BMI = 24.0 ± 1.1 kg/m2). Glycitein disappearance followed an apparent first-order rate loss. Fecal glycitein disappearance rates for the subjects segregated into three different groups described as high (k = 0.67 ± 0.14/h), moderate (k = 0.34 ± 0.04/h), and low (k = 0.15 ± 0.07/h) glycitein degraders (p \u3c 0.0001). There was no dose effect on the disappearance rates for each subject from 10 to 250 μM glycitein (averagek = 0.32 ± 0.03/h, p \u3e 0.05). Four putative glycitein metabolites, characterized by liquid chromatography−mass spectrometry (electrospray ionization using positive ionization mode), were dihydroglycitein, dihydro-6,7,4‘-trihydroxyisoflavone, and 5‘-O-methyl-O-desmethylangolensin. Two subjects produced a metabolite tentatively identified as 6-O-methyl-equol, and one subject produced daidzein as an additional metabolite of glycitein. These results show that glycitein is metabolized by human gut microorganisms and may follow metabolic pathways similar to other soy isoflavones

    Hazard Perception and Distraction in Novice Drivers: Effects of 12 Months Driving Experience

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    The high crash risk of novice drivers has been partly attributed to their underdeveloped hazard perception abilities. Novice drivers also have an increased risk of crashes due to distractions. Studies show that novice drivers do not detect risk relevant cues and are more susceptible to distractions when compared to adult drivers. This test track study was conducted to study the effects of 12 months of driving experience on teenagers. Forty-two teenagers and their parents drove through hazard perception scenarios while engaged in secondary tasks. These participants had participated in a similar session 12 months earlier. For the odometer and texting task conditions the novice drivers showed an improvement in hazard perception and a small but insignificant decrease in task suspension after 12 months. For the scenario with the cell phone task none of the novice drivers suspended the task, nor exhibited any sort of hazard perception behavior at 12 months. The results indicate that although hazard perception generally improves with experience under some distracting task conditions this is not the case for cell phone distractions

    Unconventional secretion by autophagosome exocytosis

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    In this issue, Duran et al. (2010. J. Cell Biol. doi: 10.1083/jcb.200911154) and Manjithaya et al. (2010. J. Cell Biol. doi: 10.1083/jcb.200911149) use yeast genetics to reveal a role for autophagosome intermediates in the unconventional secretion of an acyl coenzyme A (CoA)–binding protein that lacks an endoplasmic reticulum signal sequence. Medium-chain acyl CoAs are also required and may be important for substrate routing to this pathway

    An exploratory study of healthcare professionals' perceptions of interprofessional communication and collaboration

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    Interprofessional communication and collaboration during hospitalisation is critically important to provide safe and effective care. Clinical rounds are an essential interprofessional process in which the clinical problems of patients are discussed on a daily basis. The objective of this exploratory study was to identify healthcare professionals' perspectives on the ideal interprofessional round for patients in a university teaching hospital. Three focus groups with medical residents, registered nurses, medical specialists, and quality improvement officers were held. We used a descriptive method of content analysis. The findings indicate that it is important for professionals to consider how team members and patients are involved in the decision-making process during the clinical round and how current social and spatial structures can affect communication and collaboration between the healthcare team and the patient. Specific aspects of communication and collaboration are identified for improving effective interprofessional communication and collaboration during rounds

    Pan-Cancer Analysis of lncRNA Regulation Supports Their Targeting of Cancer Genes in Each Tumor Context

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    Long noncoding RNAs (lncRNAs) are commonly dys-regulated in tumors, but only a handful are known toplay pathophysiological roles in cancer. We inferredlncRNAs that dysregulate cancer pathways, onco-genes, and tumor suppressors (cancer genes) bymodeling their effects on the activity of transcriptionfactors, RNA-binding proteins, and microRNAs in5,185 TCGA tumors and 1,019 ENCODE assays.Our predictions included hundreds of candidateonco- and tumor-suppressor lncRNAs (cancerlncRNAs) whose somatic alterations account for thedysregulation of dozens of cancer genes and path-ways in each of 14 tumor contexts. To demonstrateproof of concept, we showed that perturbations tar-geting OIP5-AS1 (an inferred tumor suppressor) andTUG1 and WT1-AS (inferred onco-lncRNAs) dysre-gulated cancer genes and altered proliferation ofbreast and gynecologic cancer cells. Our analysis in-dicates that, although most lncRNAs are dysregu-lated in a tumor-specific manner, some, includingOIP5-AS1, TUG1, NEAT1, MEG3, and TSIX, synergis-tically dysregulate cancer pathways in multiple tumorcontexts

    Pan-cancer Alterations of the MYC Oncogene and Its Proximal Network across the Cancer Genome Atlas

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    Although theMYConcogene has been implicated incancer, a systematic assessment of alterations ofMYC, related transcription factors, and co-regulatoryproteins, forming the proximal MYC network (PMN),across human cancers is lacking. Using computa-tional approaches, we define genomic and proteo-mic features associated with MYC and the PMNacross the 33 cancers of The Cancer Genome Atlas.Pan-cancer, 28% of all samples had at least one ofthe MYC paralogs amplified. In contrast, the MYCantagonists MGA and MNT were the most frequentlymutated or deleted members, proposing a roleas tumor suppressors.MYCalterations were mutu-ally exclusive withPIK3CA,PTEN,APC,orBRAFalterations, suggesting that MYC is a distinct onco-genic driver. Expression analysis revealed MYC-associated pathways in tumor subtypes, such asimmune response and growth factor signaling; chro-matin, translation, and DNA replication/repair wereconserved pan-cancer. This analysis reveals insightsinto MYC biology and is a reference for biomarkersand therapeutics for cancers with alterations ofMYC or the PMN

    Genomic, Pathway Network, and Immunologic Features Distinguishing Squamous Carcinomas

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    This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing molecular features of squamous cell carcinomas (SCCs) from five sites associated with smokin
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