93 research outputs found

    Characterization of neutrophils and macrophages from ex vivo cultured murine bone marrow for morphologic maturation and functional responses by imaging flow cytometry

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    Neutrophils and macrophages differentiate from common myeloid progenitors in the bone marrow, where they undergo unique nuclear morphologic changes as they mature into fully functional phagocytes. These changes include condensation of chromatin, the most pronounced exhibited by mature neutrophils. Both myeloid cells acquire multiple functions critical to their ability to kill pathogens, including phagocytosis, the production of proteolytic enzymes and reactive oxygen species (ROS), and in the case of neutrophils, release of nuclear material known as nuclear extracellular traps (NETs). Studies on these functions often rely on the use of cells acquired from mature mouse tissues, but these tend to produce limited numbers of cells. Strategies to analyze the morphologic features and functional responses of these cells include the use of conventional brightfield or fluorescence microscopy to examine changes in nuclear structure, internalization of fluorescein-labeled bacterial or yeast particles, or release of nuclear material. Flow cytometry also is often used, especially for identifying changes in the expression of lineage-specific cell surface markers and ROS production. However, each of these techniques presents certain limitations. Here we describe methods to generate abundant populations highly enriched for neutrophils or macrophages from previously frozen, ex vivo cultured mouse bone marrow. We then apply state-of-the-art imaging flow cytometry, which combines the resolution of microscopy with the speed of flow cytometry, to analyze each lineage for changes in nuclear structure and expression of key cell surface markers. Different gating and masking strategies are applied to characterize phagocytosis of pH-dependent fluorescein-labeled E. coli, ROS production, and NET release by neutrophils. We also demonstrate that neutrophils engulfing E. coli bioparticles produce NETs in a process we term PhagoNETosis. Together these assays reveal the power of imaging flow cytometry for simultaneously assessing the maturation features and functional responses of these critical mediators of innate immunity

    Identifying Sources of Error in Surveys of Devils Hole Pupfish (Cyprinodon diabolis)

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    We assessed four potential sources of error in estimating size of the population of Devils Hole pupfish (Cyprinodon diabolis): net, time of day, diver, and order of diver. Experimental dives (3/day) were conducted during 4 days in July 2009. Effects of the four sources of error on estimates from dive surveys were analyzed using a split-split plot ANOVA. Diver and order of diver had no significant influence on estimates, whereas the effect of presence or absence of a net was significant. Effects of time of day and presence or absence of a net showed a significant interaction with depth of water. Results indicated that pupfish may move upward during the dive, and as a result, the standard methods of dive surveys may underestimate abundance

    Automation of Space and Ground Inventory Management Systems

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    The presentation examines BCR radio frequency identification (BCR/RFID) hardware, integrated RFID over a delay/disruption tolerant network (DTN), and pilot projects for RFID for center operations

    Managing Bay and Estuarine Ecosystems for Multiple Services

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    Abstract Managers are moving from a model of managing individual sectors, human activities, or ecosystem services to an ecosystem-based management (EBM) approach which attempts to balance the range of services provided by ecosystems. Applying EBM is often difficult due to inherent tradeoffs in managing for different services. This challenge particularly holds for estuarine systems, which have been heavily altered in most regions and are often subject to intense management interventions. Estuarine managers can often choose among a range of management tactics to enhance a particular service; although some management actions will result in strong tradeoffs, others may enhance multiple services simultaneously. Management of estuarine ecosystems could be improved by distinguishing between optimal management actions for enhancing multiple services and those that have severe tradeoffs. This requires a framework that evaluates tradeoff scenarios and identifies management actions likely to benefit multiple services. We created a management action-services matrix as a first step towards assessing tradeoffs and providing managers with a DOI 10.1007/s12237-013-9602-7 decision support tool. We found that management actions that restored or enhanced natural vegetation (e.g., salt marsh and mangroves) and some shellfish (particularly oysters and oyster reef habitat) benefited multiple services. In contrast, management actions such as desalination, salt pond creation, sand mining, and large container shipping had large net negative effects on several of the other services considered in the matrix. Our framework provides resource managers a simple way to inform EBM decisions and can also be used as a first step in more sophisticated approaches that model service delivery

    Narcissism and the strategic pursuit of short-term mating : universal links across 11 world regions of the International Sexuality Description Project-2.

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    Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating

    The IDENTIFY study: the investigation and detection of urological neoplasia in patients referred with suspected urinary tract cancer - a multicentre observational study

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    Objective To evaluate the contemporary prevalence of urinary tract cancer (bladder cancer, upper tract urothelial cancer [UTUC] and renal cancer) in patients referred to secondary care with haematuria, adjusted for established patient risk markers and geographical variation. Patients and Methods This was an international multicentre prospective observational study. We included patients aged ≄16 years, referred to secondary care with suspected urinary tract cancer. Patients with a known or previous urological malignancy were excluded. We estimated the prevalence of bladder cancer, UTUC, renal cancer and prostate cancer; stratified by age, type of haematuria, sex, and smoking. We used a multivariable mixed-effects logistic regression to adjust cancer prevalence for age, type of haematuria, sex, smoking, hospitals, and countries. Results Of the 11 059 patients assessed for eligibility, 10 896 were included from 110 hospitals across 26 countries. The overall adjusted cancer prevalence (n = 2257) was 28.2% (95% confidence interval [CI] 22.3–34.1), bladder cancer (n = 1951) 24.7% (95% CI 19.1–30.2), UTUC (n = 128) 1.14% (95% CI 0.77–1.52), renal cancer (n = 107) 1.05% (95% CI 0.80–1.29), and prostate cancer (n = 124) 1.75% (95% CI 1.32–2.18). The odds ratios for patient risk markers in the model for all cancers were: age 1.04 (95% CI 1.03–1.05; P < 0.001), visible haematuria 3.47 (95% CI 2.90–4.15; P < 0.001), male sex 1.30 (95% CI 1.14–1.50; P < 0.001), and smoking 2.70 (95% CI 2.30–3.18; P < 0.001). Conclusions A better understanding of cancer prevalence across an international population is required to inform clinical guidelines. We are the first to report urinary tract cancer prevalence across an international population in patients referred to secondary care, adjusted for patient risk markers and geographical variation. Bladder cancer was the most prevalent disease. Visible haematuria was the strongest predictor for urinary tract cancer

    Narcisismo y bĂșsqueda estratĂ©gica del emparejamiento a corto plazo a travĂ©s de las culturas: Enlaces omnipresentes a travĂ©s de 11 regiones mundiales del Proyecto de la descripciĂłn de la sexualidad internacional 2

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    Previous studies have documented links between sub-clinical narcissism and the active pursuit of short-term mating strategies (e.g., unrestricted sociosexuality, marital infidelity, mate poaching). Nearly all of these investigations have relied solely on samples from Western cultures. In the current study, responses from a cross-cultural survey of 30,470 people across 53 nations spanning 11 world regions (North America, Central/South America, Northern Europe, Western Europe, Eastern Europe, Southern Europe, Middle East, Africa, Oceania, Southeast Asia, and East Asia) were used to evaluate whether narcissism (as measured by the Narcissistic Personality Inventory; NPI) was universally associated with short-term mating. Results revealed narcissism scores (including two broad factors and seven traditional facets as measured by the NPI) were functionally equivalent across cultures, reliably associating with key sexual outcomes (e.g., more active pursuit of short-term mating, intimate partner violence, and sexual aggression) and sex-related personality traits (e.g., higher extraversion and openness to experience). Whereas some features of personality (e.g., subjective well-being) were universally associated with socially adaptive facets of Narcissism (e.g., self-sufficiency), most indicators of short-term mating (e.g., unrestricted sociosexuality and marital infidelity) were universally associated with the socially maladaptive facets of narcissism (e.g., exploitativeness). Discussion addresses limitations of these cross-culturally universal findings and presents suggestions for future research into revealing the precise psychological features of narcissism that facilitate the strategic pursuit of short-term mating.Estudios previos, en primer lugar a travĂ©s de las muestras de culturas occidentales, han documentado asociaciones sistemĂĄticas del narcisismo subclĂ­nico con mĂșltiples indicadores de estrategias del emparejamiento a corto plazo (p. ej. sociosexualidad ilimitada, infidelidad, caza de pareja). En este estudio se han usado respuestas de la encuesta transcultural de 30.470 personas de 53 naciones de 11 regiones mundiales (AmĂ©rica del Norte, AmĂ©rica del Sur/AmĂ©rica Central, Europa del Norte, Europa del Oeste, Europa del Este, Europa del Sur, Oriente PrĂłximo, África, Asia del Sur/Sudoeste de Asia, Asia del Este y OceanĂ­a) para evaluar si el narcisismo (medido por el Inventario de Personalidad Narcisista; NPI) se asocia panuniversalmente con los indicadores del emparejamiento a corto plazo, tanto en la direcciĂłn, como en la intensidad. Los resultados sugieren que el narcisismo (incluidos muchos aspectos suyos medidos por el NPI) tiene las mismas asociaciones bĂĄsicas con los rasgos de personalidad relacionados con el sexo (p. ej. extraversiĂłn alta) y con los resultados sexuales claves (p. ej. bĂșsqueda mĂĄs activa de las estrategias del emparejamiento a corto plazo) a travĂ©s de las 11 mayores regiones mundiales del PDSI 2. La discusiĂłn se enfoca en las implicaciones y limitaciones del estudio actual

    Birds of Fire: Jazz, Rock, Funk, and the Creation of Fusion by Kevin Fellezs

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/97185/1/jpms.12019.pd
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