3,729 research outputs found
Encoding Spatial Experience in Garhwali Popular Music Cassettes
Connections between particular sounds and geographically conceived places/spaces seems to be a recurrent part of many repertoires in different parts of the Himalaya. A number of examples exist in which ritual repertoires are linked to pilgrimage pathways, to specific spiritual sites or to an ordering of space in relation to geomorphic realities. In the North Indian region of Garhwal, these connections are most directly made within wedding processions in which particular repertoire items are mapped against particular landscapes and pathways. In other repertoire items, specific motivic devices are used in more subtle ways to enhance the spatial experience of performers and listeners. In popular music idioms, connections between sounds and geomorphically imagined spaces are achieved in ways that borrow from traditional repertoire but also expand the symbolic use of sound through studio enhancement. In conjunction with more obvious regional identifiers such as language, rituals, deities and costumes, sounds help construct a shared regional identity amongst listeners that is associated with the physical reality of mountains. This paper examines a selection of popular music songs from Garhwali cassettes from the 1980s, 90s and early 2000s and notes a number of consistent uses of particular sounds that prompt a spatial experience associated with a mountainous landscape
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Gender Differences in Smoking Among an Urban Emergency Department Sample.
BackgroundUrban emergency department (ED) patients have elevated smoking and substance use compared with the general population. We analyzed gender differences in smoking among an urban ED sample and assessed the contribution of substance use, demographic, and couple factors.MethodsWe conducted a secondary analysis of data obtained from a cross-sectional, observational survey (N = 1037 participants) on drinking, drug use, and intimate partner violence (IPV). Gender-specific logistic regression models for current (past 30-day) smoking and multinomial regression models for smoking intensity (light: ⩽5 cigarettes per day [CPD]; moderate: 6 to 10 CPD; heavier: >10 CPD) were estimated.ResultsSmoking prevalence was higher among men than women (35.5% vs 18.9%; P < .001). Substance use (frequency of intoxication, marijuana, amphetamine, and cocaine use), demographic (food insufficiency, unemployment), and couple-related factors (having a spouse/partner who smoked, IPV involvement, being in a same-gender couple) were differentially associated with current smoking and level of intensity among men and women.ConclusionsEmergency department staff should consider the impact of polysubstance use, food insufficiency, unemployment, and whether both partners in the couple smoke when screening patients for smoking and formulating cessation treatment plans. Women in same-gender relationships and those who have experienced IPV involvement may require additional referral
Comment on ``Protective measurements of the wave function of a single squeezed harmonic-oscillator state''
Alter and Yamamoto [Phys. Rev. A 53, R2911 (1996)] claimed to consider
``protective measurements'' [Phys. Lett. A 178, 38 (1993)] which we have
recently introduced. We show that the measurements discussed by Alter and
Yamamoto ``are not'' the protective measurements we proposed. Therefore, their
results are irrelevant to the nature of protective measurements.Comment: 2 pages LaTe
Political economics, collective action and wicked socio-ecological problems: A practice story from the field
Empowering integrative, sustainable and equitable approaches to wicked socio-ecological problems requires multiple disciplines and ways of knowing. Following calls for greater attention to political economics in this transdisciplinary work, we offer a practitioner perspective on political economy and collective action and their influences on our community engagement practice and public policy. Our perspective is grounded in a pervasive wicked problem in Australia, invasive rabbits, and the emergence of the Victorian Rabbit Action Network. The network grew out of a publically funded research project to support community-led action in rabbit management. Victorian residents and workers affected by rabbits – public and private land managers, scientists, government officers and others – were invited to engage in a participatory planning process to generate sustainable strategies to address the rabbit problem. Each stage in the process, which involved interviews, a workshop and consultations, was designed to nurture the critical enquiry, listening and learning skills of participants, advance understandings of the problem from multiple perspectives, generate collective options to guide decision-making, and encourage community-led collective action. We reflect on our understanding of these processes using the language and lens of political economics and, in particular, the context of democratic professionalism. In so doing, we define terms and refer to information resources that have enabled us to bring a practical working knowledge of political economics to our professional practice. Our intent is to motivate academics, community members, government officials, and scientists alike, to draw on their knowledge and field experiences and to share practice stories through the lens of political economics and collective action. This is an opportunity to engage each other in small ‘p’ politics of how we understand and act on wicked problems, to negotiate and connect across disciplines, practical experiences and human difference, so that people may work more creatively and effectively together to address the challenging issues of our time.
 
Survey of small intestinal and systemic immune responses following murine Arcobacter butzleri infection
Background Arcobacter (A.) butzleri has been described as causative agent for
sporadic cases of human gastroenteritis with abdominal pain and acute or
prolonged watery diarrhea. In vitro studies revealed distinct adhesive,
invasive and cytotoxic properties of A. butzleri. Information about the
underlying immunopathological mechanisms of infection in vivo, however, are
scarce. The aim of this study was to investigate the immunopathological
properties of two different A. butzleri strains in a well-established murine
infection model. Results Gnotobiotic IL-10 −/− mice, in which the intestinal
microbiota was depleted by broad-spectrum antibiotic treatment, were perorally
infected with two different A. butzleri strains isolated from a diseased
patient (CCUG 30485) or fresh chicken meat (C1), respectively. Eventhough
bacteria of either strain could stably colonize the intestinal tract at day 6
and day 16 postinfection (p.i.), mice did not exert infection induced symptoms
such as diarrhea or wasting. In small intestines of infected mice, however,
increased numbers of apoptotic cells could be detected at day 16, but not day
6 following infection with either strain. A strain-dependent influx of
distinct immune cell populations such as T and B cells as well as of
regulatory T cells could be observed upon A. butzleri infection which was
accompanied by increased small intestinal concentrations of pro-inflammatory
cytokines such as TNF, IFN-γ, MCP-1 and IL-6. Remarkably, inflammatory
responses following A. butzleri infection were not restricted to the
intestinal tract, given that the CCUG 30485 strain induced systemic immune
responses as indicated by increased IFN-γ concentrations in spleens at day 6,
but not day 16 following infection. Conclusion Upon peroral infection A.
butzleri stably colonized the intestinal tract of gnotobiotic IL-10 −/− mice.
The dynamics of distinct local and systemic inflammatory responses could be
observed in a strain-dependent fashion pointing towards an immunopathogenic
potential of A. butzleri in vivo. These results indicate that gnotobiotic
IL-10 −/− mice are well suited to further investigate the molecular mechanisms
underlying arcobacteriosis in vivo
Arcobacter butzleri Induce Colonic, Extra-Intestinal and Systemic Inflammatory Responses in Gnotobiotic IL-10 Deficient Mice in a Strain-Dependent Manner
BACKGROUND: The immunopathological impact of human Arcobacter (A.) infections
is under current debate. Episodes of gastroenteritis with abdominal pain and
acute or prolonged watery diarrhea were reported for A. butzleri infected
patients. Whereas adhesive, invasive and cytotoxic capacities have been
described for A. butzleri in vitro, only limited information is available
about the immunopathogenic potential and mechanisms of infection in vivo.
METHODOLOGY/PRINCIPAL FINDINGS: Gnotobiotic IL-10-/- mice were generated by
broad-spectrum antibiotic treatment and perorally infected with the A.
butzleri strains CCUG 30485 and C1 shown to be invasive in cell culture
assays. Bacterial colonization capacities, clinical conditions, intestinal,
extra-intestinal and systemic immune responses were monitored at day six and
16 postinfection (p.i.). Despite stable intestinal A. butzleri colonization at
high loads, gnotobiotic IL-10-/- mice were virtually unaffected and did not
display any overt symptoms at either time point. Notably, A. butzleri
infection induced apoptosis of colonic epithelial cells which was paralleled
by increased abundance of proliferating cells. Furthermore A. butzleri
infection caused a significant increase of distinct immune cell populations
such as T and B cells, regulatory T cells, macrophages and monocytes in the
colon which was accompanied by elevated colonic TNF, IFN-γ, nitric oxide (NO),
IL-6, IL-12p70 and MCP-1 concentrations. Strikingly, A. butzleri induced
extra-intestinal and systemic immune responses as indicated by higher NO
concentrations in kidney and increased TNF, IFN-γ, IL-12p70 and IL-6 levels in
serum samples of infected as compared to naive mice. Overall, inflammatory
responses could be observed earlier in the course of infection by the CCUG
30485 as compared to the C1 strain. CONCLUSION/SIGNIFICANCE: Peroral A.
butzleri infection induced not only intestinal but also extra-intestinal and
systemic immune responses in gnotobiotic IL-10-/- mice in a strain-dependent
manner. These findings point towards an immunopathogenic potential of A.
butzleri in vertebrate hosts
The Escherichia coli transcriptome mostly consists of independently regulated modules
Underlying cellular responses is a transcriptional regulatory network (TRN) that modulates gene expression. A useful description of the TRN would decompose the transcriptome into targeted effects of individual transcriptional regulators. Here, we apply unsupervised machine learning to a diverse compendium of over 250 high-quality Escherichia coli RNA-seq datasets to identify 92 statistically independent signals that modulate the expression of specific gene sets. We show that 61 of these transcriptomic signals represent the effects of currently characterized transcriptional regulators. Condition-specific activation of signals is validated by exposure of E. coli to new environmental conditions. The resulting decomposition of the transcriptome provides: a mechanistic, systems-level, network-based explanation of responses to environmental and genetic perturbations; a guide to gene and regulator function discovery; and a basis for characterizing transcriptomic differences in multiple strains. Taken together, our results show that signal summation describes the composition of a model prokaryotic transcriptome
A Novel Unsupervised Method to Identify Genes Important in the Anti-viral Response: Application to Interferon/Ribavirin in Hepatitis C Patients
Background: Treating hepatitis C with interferon/ribavirin results in a varied response in terms of decrease in viral titer and ultimate outcome. Marked responders have a sharp decline in viral titer within a few days of treatment initiation, whereas in other patients there is no effect on the virus (poor responders). Previous studies have shown that combination therapy modifies expression of hundreds of genes in vitro and in vivo. However, identifying which, if any, of these genes have a role in viral clearance remains challenging. Aims: The goal of this paper is to link viral levels with gene expression and thereby identify genes that may be responsible for early decrease in viral titer. Methods: Microarrays were performed on RNA isolated from PBMC of patients undergoing interferon/ribavirin therapy. Samples were collected at pre-treatment (day 0), and 1, 2, 7, 14 and 28 days after initiating treatment. A novel method was applied to identify genes that are linked to a decrease in viral titer during interferon/ribavirin treatment. The method uses the relationship between inter-patient gene expression based proximities and inter-patient viral titer based proximities to define the association between microarray gene expression measurements of each gene and viral-titer measurements. Results: We detected 36 unique genes whose expressions provide a clustering of patients that resembles viral titer based clustering of patients. These genes include IRF7, MX1, OASL and OAS2, viperin and many ISG's of unknown function. Conclusion: The genes identified by this method appear to play a major role in the reduction of hepatitis C virus during the early phase of treatment. The method has broad utility and can be used to analyze response to any group of factors influencing biological outcome such as antiviral drugs or anti-cancer agents where microarray data are available. © 2007 Brodsky et al
Heart rate variability and target organ damage in hypertensive patients
Background:
We evaluated the association between linear standard Heart Rate Variability (HRV) measures and vascular, renal and cardiac target organ damage (TOD).
Methods:
A retrospective analysis was performed including 200 patients registered in the Regione Campania network (aged 62.4 ± 12, male 64%). HRV analysis was performed by 24-h holter ECG. Renal damage was assessed by estimated glomerular filtration rate (eGFR), vascular damage by carotid intima-media thickness (IMT), and cardiac damage by left ventricular mass index.
Results:
Significantly lower values of the ratio of low to high frequency power (LF/HF) were found in the patients with moderate or severe eGFR (p-value < 0.001). Similarly, depressed values of indexes of the overall autonomic modulation on heart were found in patients with plaque compared to those with a normal IMT (p-value <0.05). These associations remained significant after adjustment for other factors known to contribute to the development of target organ damage, such as age. Moreover, depressed LF/HF was found also in patients with left ventricular hypertrophy but this association was not significant after adjustment for other factors.
Conclusions:
Depressed HRV appeared to be associated with vascular and renal TOD, suggesting the involvement of autonomic imbalance in the TOD. However, as the mechanisms by which abnormal autonomic balance may lead to TOD, and, particularly, to renal organ damage are not clearly known, further prospective studies with longitudinal design are needed to determine the association between HRV and the development of TOD
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Dominant cognitive frames and the innovative power of social networks
In this paper, we illustrate the link between social network structures, dominant cognitive frames on network purpose and the innovative power of a network, through a mixed-method comparative analysis of two Knowledge Translation Networks (KTNs)in the English National Health Service (NHS). Our findings illustrate several challenges for networked forms of organization linked to different manifestations of social networks (centralized/decentralized) and dominant cognitive frames (polarizing/loosely clustered). Our paper contributes a better understanding of how dominant frames on network purpose emerge alongside the development of network structure itself, and explores how this interplay between dominant frames and social networks impacts upon the collaborative work that supports the networks’ innovative power
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