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Cyclophosphamide And Doxorubicin But Not Methotrexate Responsible For Rapid Development Of The Resistance To Ciprofloxacin In Uropathogenic Escherichia Coli In Vitro, Ibtesam Ghadhban Auda

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: The effect of anticancer chemotherapies on mammalian cells had been studied previously but few studies are performed to study the reaction of the bacterial cell toward mutagenic chemotherapies. We sought to study the effect of some anticancer chemotherapies on the rapid development of resistance to ciprofloxacin in ciprofloxacin susceptible uropathogenic E.coli (UPEC) in vitro. METHODS: Two methods of mutation induction are performed, modified Ames test and modified tube method. Cyclophosphamide, doxorubicin and methotrexate (MTX) at plasma concentration tested as mutagenic drugs towards ciprofloxacin resistance in UPEC. Disc diffusion test for antibiotic susceptablity is also used. Chi-square test test …

Effects Of Exposure Duration To Liquefied Propane On Lipid Peroxidation And Antioxidant Enzymes In Gas Workers, Nada Khadum Al- Tae

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Toxic environmental agents include a host of chemicals and pollutants that may available in tobacco smoke and tar, the atmosphere, drugs, the work place, the food and water supply and from radiation and infectious organisms. These agents may exert multiple types of harmful effects on human body, including lipid peroxidation. OBJECTIVES: To assess the effects of duration of exposure on lipid peroxidation and antioxidant enzymes in liquefied propane gas workers. METHODS: Fifty five adult male gas workers (age mean 36. 6 ± 3.8 years) in liquefied propane gas stations in the District of Baghdad were enrolled in the …

Phosphorylation And Regulation Of The Dopamine Transporter By Psychostimulant Substrates And Protein -Protein Interactions, Mark A. Cervinski

Theses and Dissertations

The dopamine transporter (DAT) is an integral membrane protein that clears dopamine (DA) from the synaptic space following neurotransmission. DATs amino acid sequence contains numerous serine, threonine and tyrosine residues, some of which are located in protein kinase consensus sites. While DAT phosphorylation and regulation in response to protein kinase C activation is well documented, evidence suggests that multiple signals and interacting proteins also mediate these processes. Previous research has also demonstrated that DAT regulation is influenced by the presence of the DAT substrates amphetamine (AMPH), methamphetamine (METH) and the uptake blocker cocaine. Using 32PO4 metabolic labeling and [3H]DA uptake …

Perceptions Of The Sitting Bull College Elementary Special Education Program Between 1996–2005, Kathryn Froelich

Theses and Dissertations

The purpose of this study was to investigate how the Sitting Bull College Elementary/Special Education program has contributed to the retention, qualifications, and sense of efficacy of graduates from 1996 through 2005. The study further examined graduate retention, graduate qualifications, and graduate sense of efficacy as related to program content, program delivery, and program faculty. This study was conducted as a mixed method/action research and involved methodology conducted through the administration of a survey and individual interviews. A 29 item written survey was mailed to all 32 program graduates. Interview questions were developed and conducted with ten of the questionnaire …

Decreased Renal Basement Membrane Thickening Is Accompanied By Elevated Renal Antioxidants In The Ames Dwarf Mouse Model Of Delayed Aging, Mandy M. Meyer

Theses and Dissertations

Experimental evidence suggests that disease- and age-related thickening of glomerular (GBM) and tubular (TBM) basement membranes may be related to increases in reactive oxygen species (ROS). Studies also suggest that antioxidants may function as renoprotectants against such ROS-induced damage. The current study focuses on metallothionein-I/II (MT-I/II) and glutathione (GSH), both of which exhibit potent antioxidant functions. Ames dwarf mice, which exhibit elevated tissue antioxidant levels (catalase, Cu/Zn superoxide dismutase, GSH) and an average life span significantly greater (50-65%) than wild type controls, were used to test our hypothesis that increased levels of renal MT-I/II and GSH are concomitant with decreased …

Nota Bene, March 27, 2007

Nota Bene, 2007

No abstract provided.

Spotted Cotton Oligonucleotide Microarrays For Gene Expression Analysis, Joshua Udall, Lex E. Flagel, Foo Chung, Andrew W. Woodward, Ran Hovav, Ryan A. Rapp, Jordan M. Swanson, Jinsuk J. Lee, Alan R. Gingle, Dan Nettleton, Christopher D. Town, Z. Jeffrey Chen, Jonathan F. Wendel

Faculty Publications

Microarrays offer a powerful tool for diverse applications plant biology and crop improvement. Recently, two comprehensive assemblies of cotton ESTs were constructed based on three Gossypium species. Using these assemblies as templates, we describe the design and creation and of a publicly available oligonucleotide array for cotton, useful for all four of the cultivated species. Results: Synthetic oligonucleotide probes were generated from exemplar sequences of a global assembly of 211,397 cotton ESTs derived from <50 different cDNA libraries representing many different tissue types and tissue treatments. A total of 22,787 oligonucleotide probes are included on the arrays, optimized to target the diversity of the transcriptome and previously studied cotton genes, transcription factors, and genes with homology to Arabidopsis. A small portion of the oligonucleotides target unidentified protein coding sequences, thereby providing an element of gene discovery. Because many oligonucleotides were based on ESTs from fiber-specific cDNA libraries, the microarray has direct application for analysis of the fiber transcriptome. To illustrate the utility of the microarray, we hybridized labeled bud and leaf cDNAs from G. hirsutum and demonstrate technical consistency of results. Conclusion: The cotton oligonucleotide microarray provides a reproducible platform for transcription profiling in cotton, and is made publicly available through http://cottonevolution.info.

The Murray Ledger And Times, March 27, 2007, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

Characteristics Of Columbia Spotted Frog (Rana Luteiventris) Oviposition Sites In Northeastern Oregon, Usa, Christopher A. Pearl, Michael J. Adams, Wendy H. Wente

Western North American Naturalist

Several western ranid frogs possess a unique strategy of breeding communally over a short temporal window and reusing oviposition sites between years. However, little is published on the characteristics of oviposition sites selected by these explosive breeders. The Columbia spotted frog (Rana luteiventris) is native to northwestern North America and is of conservation concern in the southern portions of its range. As part of a study examining relationships between livestock grazing and R. luteiventris habitat, we assessed characteristics of the species' oviposition sites in 25 fishless ponds in northeastern Oregon. Oviposition sites were generally in shallow water (<25 cm) close to shore and tended to be in the northeastern portion of ponds. Oviposition sites were found more frequently over heavily vegetated substrates and in areas of less substrate slope and shade than random points in littoral zones. We did not quantify temperature differences within ponds, but the patterns we documented are consistent with preferential use of warmer microhabitats for oviposition.

Potential Contribution Of Respiration By Anabrus Simplex (Mormon Crickets) To Net Co2 Exchange In Three Great Basin Ecosystems, A. Joshua Leffler, Michael S. Peek, Larry Hipps, Sasha Ivans, Ronald J. Ryel, Martyn M. Caldwell

Western North American Naturalist

Disturbance events can significantly influence net CO₂ exchange (NCE) in ecosystems. High densities of Anabrus simplex (Mormon crickets) periodically afflict large areas of the western USA; their sheer numbers could make them a significant source of CO₂. We modeled cricket respiration at the ecosystem level using air and body temperatures and insect gas exchange measurements. Cricket CO₂ efflux values were compared to ecosystem CO₂ flux from eddy covariance measurements in 3 Great Basin ecosystems: a juniper woodland, a sagebrush shrubland, and a crested wheatgrass pasture. Mean respiration from Mormon crickets was 0.96 g CO_{2 …}

Evaluation Of Radio-Transmitters On Juvenile Rabbits: Application To The Semifossorial Pygmy Rabbit (Brachylagus Idahoensis), Wendy A. Estes-Zumpf, Janet L. Rachlow

Western North American Naturalist

No abstract provided.

Volume 44, Number 60: March 27, 2007, University Of North Dakota

University Letter Archive

No abstract provided.

Queer Identity? Discussing Identity And Appearance In An On-Line “Genderqueer” Community, Sharla N. Alegria

USF Tampa Graduate Theses and Dissertations

The relatively new field of Queer Theory creates ways of thinking about people living without binary gender, but does not provide for a research model with which to give context to the material struggles of such people. Through the use of Internet discussion groups, the current research project attempts to examine the challenges that people who identify with the concept "genderqueer" describe facing as they fashion selves in social interactions; a process which inevitably requires consumer goods that typically only allow for heteronormative binary gender. Findings suggest that there are similarities in how respondents came to identify with "genderqueer," but …

The Bg News March 27, 2007, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. March 27, 2007. Volume 97-Issue 122.

Spatially Scaled Response Of A Lazuli Bunting Population To Fire, Andreas Leidolf, Tim Nuttle, Michael L. Wolfe

Western North American Naturalist

We examined the response of Lazuli Bunting (Passerina amoena) to fire in Gambel oak (Quercus gambelii) woodland at Camp Williams, Utah, during 1993–1998. Overall, Lazuli Bunting abundance on the study area increased significantly during the 2 years after a stand-replacing wildfire, which covered 800 ha of Gambel oak woodland. This increase suggested that Lazuli Buntings respond positively to fire. However, a comparison of pre- and post-fire abundance of Lazuli Bunting for 2 groups of monitoring plots with different fire histories showed that abundance was significantly greater during the post-fire period for both burned and unburned plots. …

Diets Of Sympatric Bobcats And Coyotes During Years Of Varying Rainfall In Central Arizona, Ted Mckinney, Thorry W. Smith

Western North American Naturalist

We collected fecal samples (scats) of sympatric bobcats (Lynx rufus) and coyotes (Canis latrans) between 2000 and 2003 in a 53,600-ha area of the Upper Sonoran Desert in central Arizona. Our objective was to investigate composition, diversity, and overlap of diets of bobcats and coyotes in relation to varying rainfall in the Sonoran Desert of central Arizona. In general, bobcats ate more rodents than did coyotes, and coyotes ate more lagomorphs, large prey, and fruit/seeds than did bobcats. Composition of bobcat diets was independent of differences among years in annual rainfall and seasonal rainfall during summer–autumn …

Modeling Distributions Of Rare Plants In The Great Basin, Western North America, M. Aitken, D. W. Roberts, L. M. Shultz

Western North American Naturalist

In this 2-phase study, we developed field-validated site and landscape-level predictive models for identifying potential rare and endemic plant habitat in the Great Basin of western North America. Four species were chosen to include a range of environmental variability and plant communities. Herbarium records of known occurrences were used to identify initial sample sites. The geographic coordinates, environmental attributes, and vegetation data collected at each site were used to develop 2 predictive models for each species: a field key and a probability-of-occurrence or predictor map. The field key was developed using only field data collected at the sites on environmental …

Monitoring With A Modified Robel Pole On Meadows In The Central Black Hills Of South Dakota, Daniel W. Uresk, Ted A. Benzon

Western North American Naturalist

This study using a modified Robel pole was conducted in the central Black Hills, South Dakota. The objectives were to test the relationship between visual obstruction readings and standing herbage, develop guidelines for monitoring, and estimate sample size. The relationship between visual obstruction and standing herbage was linear with 2 segments in a piecewise model. Regression coefficients were highly significant (P ≤ 0.001). Standard error of the estimate for a single mean was 373 kg · ha⁻¹. Herbage ranged from 89 to 3821 kg · ha⁻¹ with a mean of 1416 kg · ha⁻¹. …

Food And Habitat Relationships Of Claassenia Sabulosa (Plecoptera: Perlidae) In The Upper Colorado River, Colorado, Richard A. Thorp, Jeremy B. Monroe, Emily C. Thorp, Todd Wellnitz, N. Leroy Poff

Western North American Naturalist

Streambed surveys were conducted along the upper Colorado River, Colorado, to describe the distributions of Claassenia sabulosa larvae in relation to current speed and to determine their diets. We also addressed diel feeding periodicity by sampling during both day and night. Claassenia sabulosa was more abundant in riffle habitats than in runs. A positive relationship existed between C. sabulosa abundance and stream current, with larval size increasing with current speed. Chironomidae, Baetidae, and Simulidae collectively accounted for 93% of the prey found in stonefly guts; however, these categories were not consumed equally by all C. sabulosa. Smaller C. sabulosa …

Anthropogenic Threat To The Desert Tortoise (Gopherus Agassizii): Litter In The Mojave Desert, Andrew D. Walde, Meagan L. Harless, David K. Delaney, Larry L. Pater

Western North American Naturalist

No abstract provided.

Tongass: Pulp Politics And The Fight For The Alaska Rain Forest By Kathie Durbin, Clayton M. White

Western North American Naturalist

No abstract provided.

The George-Anne, Georgia Southern University

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Vegetation Responses To 35 And 55 Years Of Native Ungulate Grazing In Shrubsteppe Communities, Echo A. Rexroad, Karen H. Beard, Andrew Kulmatiski

Western North American Naturalist

Ungulate populations are managed in shrubsteppe ecosystems around the world, but relatively few long-term datasets are available that test the impacts of these grazers on shrubsteppe structure and function. This study evaluated 8 exclosures in 4 shrubsteppe communities to determine the effects of deer and elk over 35 or 55 years on (1) plant biomass and species composition, (2) soil nitrogen (N) mineralization and net nitrification rates, Olsen extractable phosphorus (P), and C:N ratios, and (3) arthropod diversity and abundance. The site with deer, the highest ungulate densities, and coldest climate (Sinlahekin Wildlife Area, WA) had greater vegetative biomass and …

Vegetation Changes After Livestock Grazing Exclusion And Shrub Control In The Southern Chihuahuan Desert, Ricardo Mata-González, Benjamín Figueroa-Sandoval, Fernando Clemente, Mario Manzano

Western North American Naturalist

Vegetation cover and production were evaluated after nearly 7 years of livestock grazing exclusion and shrub control in an area with a long history of heavy livestock grazing in the southern Chihuahuan Desert, Mexico. An exclosure was established to prevent livestock grazing. In half of the excluded area, the main shrub, Larrea tridentata, was mechanically controlled. Outside the exclosure, heavy livestock grazing occurred as customary and shrubs were not controlled. Absence of grazing resulted in 50% higher grass cover and 35% higher total biomass. Larrea tridentata cover was twice as high on the grazed area as on the ungrazed …

Dispersal And Extraterritorial Movements Of Swift Foxes (Vulpes Velox) In Northwestern Texas, Kerry L. Nicholson, Warren B. Ballard, Brady K. Mcgee, Heather A. Whitlaw

Western North American Naturalist

Dispersal plays an important role in the population dynamics of many carnivores, yet little information exists about the dispersal and movement patterns of swift foxes (Vulpes velox). We radio-collared and monitored 68 swift foxes for dispersal at 2 study sites in northwestern Texas from January 2002 to April 2004. Dispersal distance for juveniles (13.1 ± 0.3 km, s), adults (10 ± 4.7 km) and transients (25.4 ± 9.1 km) did not differ by age class (F = 1.49, df = 2, P = 0.24) or sex (F = 0.23, df = 1, P = 0.63) …

Sex And The Lonely Atriplex, D. Carl Freeman, E. Durant Mcarthur, Kathleen J. Miglia, Michelle J. Nilson, Michelle L. Brown

Western North American Naturalist

No abstract provided.

Grit Size Preferences And Confirmation Of Ingested Lead Pellets In Chukars (Alectoris Chukar), Randy T. Larsen, Jerran T. Flinders, Dean L. Mitchell, Ernest R. Perkins

Western North American Naturalist

No abstract provided.

Effect Of Backwashing On Perchlorate Removal In Fixed Bed Biofilm Reactors, Young Chul Choi, Xu Li, Lutgarde Raskin, Eberhard Morgenroth

Department of Civil and Environmental Engineering: Faculty Publications

The influence of backwashing on biological perchlorate reduction was evaluated in two laboratory scale fixed bed biofilm reactors using 1- or 3-mm glass beads as support media. Influent perchlorate concentrations were 50 μg/L and acetate was added as the electron donor at a concentration of 2 mg C/L. Perchlorate removal was evaluated at various influent dissolved oxygen (DO) concentrations. Complete perchlorate removal was achieved with an influent DO concentration of 1 mg/L resulting in bulk phase DO concentrations below the detection limit of 0.01 mg/L. The influence of increasing influent DO concentrations for 12 h periods was evaluated before and …

Poster Session, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

• Identification of potential bacterial sources and levels, Red Duck Creek, Mayfield, Kentucky, Brooke Vorbeck, Travis Martin, and Mike Kemp, Dept of Industrial and Engineering Technology, Murray State University
• Water-quality trend analysis for streams in Kentucky, A.S. Crain and G.R. Martin, USGS, Louisville
• Preliminary Results of a Fecal Microbe Survey in a Eutrophic Lake, Wilgreen Lake, Madison County, Kentucky, W.S. Borowski and M.S. Albright, Depts of Earth Sciences and Geography, EKU
• Preliminary Physical and Chemical Characteristics of an Eutrophic Lake, Wilgreen Lake, Madison County, Kentucky, E.C. Jolly and W.S. Borowski, Dept of Earth Sciences, EKU
• Lethal and …

Session 1c: Epscor Projects, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

• Colloidal Arsenic in Poultry-Litter Amended Soils, Lisa Y. Blue and others, Dept of Chemistry, UK
• Environmental Monitoring and Assessment of Arsenic Metal in Groundwater Samples from Ballard, Carlisle, and Graves Counties, Kentucky, H.B. Fannin and others, Dept of Chemistry, Murray State University
• Environmental Monitoring and Assessment of the Groundwater Quality in Calloway County, Kentucky, Dan Kotter and others, KGS, Henderson, KY
• Land-Use Effects on Water Quality Within Lower Howard Creek Watershed, Southwestern Clark County, Kentucky, S.D. Daugherty and J.S. Dinger, Dept Earth & Environmental Sciences and KGS, UK