1,038 research outputs found

    Use of Prednisone With Abiraterone Acetate in Metastatic Castration‐Resistant Prostate Cancer

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140033/1/onco1231.pd

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/139931/1/oncoe14.pd

    Computation with Advice

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    Computation with advice is suggested as generalization of both computation with discrete advice and Type-2 Nondeterminism. Several embodiments of the generic concept are discussed, and the close connection to Weihrauch reducibility is pointed out. As a novel concept, computability with random advice is studied; which corresponds to correct solutions being guessable with positive probability. In the framework of computation with advice, it is possible to define computational complexity for certain concepts of hypercomputation. Finally, some examples are given which illuminate the interplay of uniform and non-uniform techniques in order to investigate both computability with advice and the Weihrauch lattice

    Hairy Canola (Brasssica napus) re-visited: Down-regulating TTG1 in an AtGL3-enhanced hairy leaf background improves growth, leaf trichome coverage, and metabolite gene expression diversity

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    Primer sequences used in the construction and analysis of B. napus transgenic lines. Table S1B. Blast of batch leaf Q-PCR primers to the B. rapa, B. oleracea, and B. napus genomes for five trichome regulatory genes and two control genes in B. napus. Table S1C. “Detectable” B. napus homologues of five trichome regulatory genes in first true leaves (from RNA sequencing). Table S1D. BlastP for five Arabidopsis trichome regulatory genes against the Brassica napus genome in NCBI. Table S2A. Differentially expressed leaf trichome ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy line K-5-8 relative to semi-glabrous cv. Westar. Table S2B. Leaf trichome genes with no significant expression differences (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy line K-5-8 relative to semi-glabrous cv. Westar. Table S3. Differentially expressed leaf flavonoid ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S4. Differentially expressed leaf phenylpropanoid and lignin ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S5. Differentially expressed leaf phenolic ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S6. Differentially expressed leaf shikimate ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S7. Differentially expressed leaf isoprenoid and terpene ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S8. Differentially expressed leaf glucosinolate-related and miscellaneous sulphur-related ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S9. Differentially expressed leaf alkaloid-related and miscellaneous N-metabolizing ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S10. Differentially expressed leaf cell wall structural carbohydrate ESTs ((p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S11. Differentially expressed leaf mucilage ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S12. Differentially expressed leaf wax ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S13. Differentially expressed leaf hormone ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S14. Differentially expressed leaf secondary metabolism ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S15. Differentially expressed leaf redox-related ESTs (p < 0.05)) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S16. Differentially expressed leaf protein modification ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S17. Differentially expressed leaf protein degradation ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. Table S18. Differentially expressed leaf transcription factor ESTs (p < 0.05) in hairy AtGL3+ B. napus or ultra-hairy K-5-8 relative to semi-glabrous cv. Westar. (XLSX 400 kb

    Hairy Canola (Brasssica napus) re-visited: Down-regulating TTG1 in an AtGL3-enhanced hairy leaf background improves growth, leaf trichome coverage, and metabolite gene expression diversity

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    Background Through evolution, some plants have developed natural resistance to insects by having hairs (trichomes) on leaves and other tissues. The hairy trait has been neglected in Brassica breeding programs, which mainly focus on disease resistance, yield, and overall crop productivity. In Arabidopsis, a network of three classes of proteins consisting of TTG1 (a WD40 repeat protein), GL3 (a bHLH factor) and GL1 (a MYB transcription factor), activates trichome initiation and patterning. Introduction of a trichome regulatory gene AtGL3 from Arabidopsis into semi-glabrous Brassica napus resulted in hairy canola plants which showed tolerance to flea beetles and diamondback moths; however plant growth was negatively affected. In addition, the role of BnTTG1 transcription in the new germplasm was not understood. Results Here, we show that two ultra-hairy lines (K-5-8 and K-6-3) with BnTTG1 knock-down in the hairy AtGL3+ B. napus background showed stable enhancement of trichome coverage, density, and length and restored wild type growth similar to growth of the semi-glabrous Westar plant. In contrast, over-expression of BnTTG1 in the hairy AtGL3+ B. napus background gave consistently glabrous plants of very low fertility and poor stability, with only one glabrous plant (O-3-7) surviving to the T3 generation. Q-PCR trichome gene expression data in leaf samples combining several leaf stages for these lines suggested that BnGL2 controlled B. napus trichome length and out-growth and that strong BnTTG1 transcription together with strong GL3 expression inhibited this process. Weak expression of BnTRY in both glabrous and trichome-bearing leaves of B. napus in the latter Q-PCR experiment suggested that TRY may have functions other than as an inhibitor of trichome initiation in the Brassicas. A role for BnTTG1 in the lateral inhibition of trichome formation in neighbouring cells was also proposed for B. napus. RNA sequencing of first leaves identified a much larger array of genes with altered expression patterns in the K-5-8 line compared to the hairy AtGL3+ B. napus background (relative to the Westar control plant). These genes particularly included transcription factors, protein degradation and modification genes, but also included pathways that coded for anthocyanins, flavonols, terpenes, glucosinolates, alkaloids, shikimates, cell wall biosynthesis, and hormones. A 2nd Q-PCR experiment was conducted on redox, cell wall carbohydrate, lignin, and trichome genes using young first leaves, including T4 O-3-7-5 plants that had partially reverted to yield two linked growth and trichome phenotypes. Most of the trichome genes tested showed to be consistant with leaf trichome phenotypes and with RNA sequencing data in three of the lines. Two redox genes showed highest overall expression in K-5-8 leaves and lowest in O-3-7-5 leaves, while one redox gene and three cell wall genes were consistently higher in the two less robust lines compared with the two robust lines. Conclusion The data support the strong impact of BnTTG1 knockdown (in the presence of strong AtGL3 expression) at restoring growth, enhancing trichome coverage and length, and enhancing expression and diversity of growth, metabolic, and anti-oxidant genes important for stress tolerance and plant health in B. napus. Our data also suggests that the combination of strong (up-regulated) BnTTG1 expression in concert with strong AtGL3 expression is unstable and lethal to the plant

    How Low Can You Go?: Widespread Challenges in Measuring Low Stream Discharge and a Path Forward

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    Low flows pose unique challenges for accurately quantifying streamflow. Current field methods are not optimized to measure these conditions, which in turn, limits research and management. In this essay, we argue that the lack of methods for measuring low streamflow is a fundamental challenge that must be addressed to ensure sustainable water management now and into the future, particularly as climate change shifts more streams to increasingly frequent low flows. We demonstrate the pervasive challenge of measuring low flows, present a decision support tool (DST) for navigating best practices in measuring low flows, and highlight important method developmental needs

    A Population-Based Case–Control Study of Urinary Arsenic Species and Squamous Cell Carcinoma in New Hampshire, USA

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    Background: Chronic high arsenic exposure is associated with squamous cell carcinoma (SCC) of the skin, and inorganic arsenic (iAs) metabolites may play an important role in this association. However, little is known about the carcinogenicity of arsenic at levels commonly observed in the United States. Objective: We estimated associations between total urinary arsenic and arsenic species and SCC in a U.S. population. Methods: We conducted a population-based case–control SCC study (470 cases, 447 controls) in a U.S. region with moderate arsenic exposure through private well water and diet. We measured urinary iAs, monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA), and summed these arsenic species (ΣAs). Because seafood contains arsenolipids and arsenosugars that metabolize into DMA through alternate pathways, participants who reported seafood consumption within 2 days before urine collection were excluded from the analyses. Results: In adjusted logistic regression analyses (323 cases, 319 controls), the SCC odds ratio (OR) was 1.37 for each ln-transformed microgram per liter increase in ln-transformed ΣAs concentration [ln(ΣAs)] (95% CI: 1.04, 1.80). Urinary ln(MMA) and ln(DMA) also were positively associated with SCC (OR = 1.34; 95% CI: 1.04, 1.71 and OR = 1.34; 95% CI: 1.03, 1.74, respectively). A similar trend was observed for ln(iAs) (OR = 1.20; 95% CI: 0.97, 1.49). Percent iAs, MMA, and DMA were not associated with SCC. Conclusions: These results suggest that arsenic exposure at levels common in the United States relates to SCC and that arsenic metabolism ability does not modify the association

    Associations between Intake of Calcium, Magnesium, and Phosphorus and Risk of Pancreatic Cancer: A Population-Based, Case-Control Study in Minnesota

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    Experimental studies suggest that abnormal levels of calcium, magnesium, and phosphorus are implicated in pancreatic carcinogenesis. We investigated the associations between intakes of these minerals and the risk of pancreatic cancer in a case-control study conducted in 1994-1998. Cases of pancreatic cancer (n150) were recruited from all hospitals in the metropolitan area of the Twin Cities and Mayo Clinic, Minnesota. Controls (n459) were randomly selected from the general population and frequency matched to cases by age, sex, and race. All dietary variables were adjusted for energy intake using the residual method prior to data analysis. Logistic regression was performed to evaluate the associations between intake of three nutrients examined and the risk of pancreatic cancer. Total intake of calcium (936 vs. 1026 mg/day) and dietary intake of magnesium (315 vs. 331 mg/day) and phosphorus (1350 vs. 1402 mg/day) were significantly lower in cases than in controls. After adjustment for confounders, there were not significant associations of total and dietary intakes of calcium, magnesium, and phosphorus with the risk of pancreatic cancer. In addition, no significant interactions exist between intakes of these minerals and total fat on pancreatic cancer risk. In conclusion, the present study does not suggest that intakes of calcium, magnesium, and phosphorus were significantly associated with the risk of pancreatic cancer
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