522 research outputs found
Risk factors for COPD spirometrically defined from the lower limit of normal in the BOLD project.
To access publisher full text version of this article. Please click on the hyperlink in Additional Links field.Chronic obstructive pulmonary disease (COPD) is predicted to become the third most common cause of death and disability worldwide by 2020. The prevalence of COPD defined by the lower limit of normal was estimated using high-quality spirometry in surveys of 14 populations aged ≥ 40 yrs. The strength and consistency of associations were assessed using random effects meta-analysis. Pack-years of smoking were associated with risk of COPD at each site. After adjusting for this effect, we still observed significant associations of COPD risk with age (OR 1.52 for a 10 yr age difference, 95% CI 1.35-1.71), body mass index in obese compared with normal weight (OR 0.50, 95% CI 0.37-0.67), level of education completed (OR 0.76, 95% CI 0.67-0.87), hospitalisation with a respiratory problem before age 10 yrs (OR 2.35, 95% CI 1.42-3.91), passive cigarette smoke exposure (OR 1.24, 95% CI 1.05-1.47), tuberculosis (OR 1.78, 95%CI 1.17-2.72) and a family history of COPD (OR 1.50, 95% CI 1.19-1.90). Although smoking is the most important risk factor for COPD, other risk factors are also important. More research is required to elucidate relevant risk factors in low- and middle-income countries where the greatest impact of COPD will occur.ALTANA
Aventis
AstraZeneca
Boehringer-Ingelheim
Chiesi
GlaxoSmithKline
Merck
Novartis
Pfizer
Schering-Plough
Sepracor
University of Kentucky
Boehringer Ingelheim China (Guangzhou, China)
Turkish Thoracic Society
Pfizer (Adana, Turkey)
Merck Sharpe Dohme
Salzburger Gebietskrankenkasse
Salzburg Local Government (Salzburg, Austria)
Research for International Tobacco Control
International Development Research Centre
South African Medical Research Council
South African Thoracic Society GlaxoSmithKline
University of Cape Town Lung Institute (Cape Town, South Africa)
Landspitali-University Hospital
GlaxoSmithKline Iceland
AstraZeneca Iceland (Reykjavik, Iceland)
GlaxoSmithKline Pharmaceuticals
Polpharma
Ivax Pharma Poland
AstraZeneca Pharma Poland
ZF Altana Pharma
Pliva Krakow
Linde Gaz Polska
Novartis Poland
Lek Polska Farmaceutyczne Polfa
Starostwo Proszowice
Skanska
Zasada
Agencja Mienia Wojskowego w Krakowie
Telekomunikacja Polska
Biernacki
Amplus Bucki
Skrzydlewski
Sotwin
Agroplon (Krakow, Poland)
Pfizer Germany (Hanover, Germany)
Norwegian Ministry of Health's Foundation for Clinical Research
Haukeland University Hospital's Medical Research Foundation for Thoracic Medicine (Bergen, Norway)
GlaxoSmithKline (Vancouver, Canada)
Marty Driesler Cancer Project (Lexington, KY, USA)
Philippine College of Chest Physicians
Boehringer Ingelheim (Phil)
Philippine College of Physicians
United Laboratories (Phil) (Manila, Philippines)
Air Liquide Healthcare P/L
AstraZeneca P/L
Boehringer Ingelheim P/L
GlaxoSmithKline Australia P/L
Pfizer Australia P/L (Sydney, Australia)
UK Department of Health's Policy (London, UK)
Swedish Heart-Lung Foundation
Swedish Heart and Lung Association
GlaxoSmithKline (Uppsala, Sweden)
Adamed
Lek Polska
Biogra
Radio Cherenkov signals from the Moon: neutrinos and cosmic rays
Neutrino production of radio Cherenkov signals in the Moon is the object of
radio telescope observations. Depending on the energy range and detection
parameters, the dominant contribution to the neutrino signal may come from
interactions of the neutrino on the Moon facing the telescope, rather than
neutrinos that have traversed a portion of the Moon. Using the approximate
analytic expression of the effective lunar aperture from a recent paper by
Gayley, Mutel and Jaeger, we evaluate the background from cosmic ray
interactions in the lunar regolith. We also consider the modifications to the
effective lunar aperture from generic non-standard model neutrino interactions.
A background to neutrino signals are radio Cherenkov signals from cosmic ray
interactions. For cosmogenic neutrino fluxes, neutrino signals will be
difficult to observe because of low neutrino flux at the high energy end and
large cosmic ray background in the lower energy range considered here. We show
that lunar radio detection of neutrino interactions is best suited to constrain
or measure neutrinos from astrophysical sources and probe non-standard
neutrino-nucleon interactions such as microscopic black hole production.Comment: 16 pages, 19 figure
Alien Registration- Hooper, Mary Martha (Eastport, Washington County)
https://digitalmaine.com/alien_docs/1387/thumbnail.jp
Temporal changes in innate immune signals in a rat model of alcohol withdrawal in emotional and cardiorespiratory homeostatic nuclei.
BACKGROUND: Chronic alcohol use changes the brain\u27s inflammatory state. However, there is little work examining the progression of the cytokine response during alcohol withdrawal, a period of profound autonomic and emotional upset. This study examines the inflammatory response in the central nucleus of the amygdala (CeA) and dorsal vagal complex (DVC), brain regions neuroanatomically associated with affective and cardiorespiratory regulation in an in vivo rat model of withdrawal following a single chronic exposure.
METHODS: For qRT-PCR studies, we measured the expression of TNF-α, NOS-2, Ccl2 (MCP-1), MHC II invariant chain CD74, and the TNF receptor Tnfrsf1a in CeA and DVC samples from adult male rats exposed to a liquid alcohol diet for thirty-five days and in similarly treated animals at four hours and forty-eight hours following alcohol withdrawal. ANOVA was used to identify statistically significant treatment effects. Immunohistochemistry (IHC) and confocal microscopy were performed in a second set of animals during chronic alcohol exposure and subsequent 48-hour withdrawal.
RESULTS: Following a chronic alcohol exposure, withdrawal resulted in a statistically significant increase in the expression of mRNAs specific for innate immune markers Ccl2, TNF-α, NOS-2, Tnfrsf1a, and CD74. This response was present in both the CeA and DVC and most prominent at 48 hours. Confocal IHC of samples taken 48 hours into withdrawal demonstrate the presence of TNF-α staining surrounding cells expressing the neural marker NeuN and endothelial cells colabeled with ICAM-1 (CD54) and RECA-1, markers associated with an inflammatory response. Again, findings were consistent in both brain regions.
CONCLUSIONS: This study demonstrates the rapid induction of Ccl2, TNF-α, NOS-2, Tnfrsf1a and CD74 expression during alcohol withdrawal in both the CeA and DVC. IHC dual labeling showed an increase in TNF-α surrounding neurons and ICAM-1 on vascular endothelial cells 48 hours into withdrawal, confirming the inflammatory response at the protein level. These findings suggest that an abrupt cessation of alcohol intake leads to an acute central nervous system (CNS) inflammatory response in these regions that regulate autonomic and emotional state
'Ain't it a Ripping Night': Alcoholism and the Legacies of Empire in Salman Rushdie's Midnight's Children.
In the era of decolonisation that followed the Second World War, various authors sought to engage with India and the Empire’s past anew throughout their novels, identifying medicine and illness as key parts of Imperial authority and colonial experience. Salman Rushdie’s approach to the Raj in Midnight’s Children (1981) focused on the broad sweep of colonial life, juxtaposing the political and the personal. This article argues that Rushdie explores the history of colonial India by employing alcohol and alcoholism as lenses through which to explore the cultural, political and medical legacies of Empire. Through analysis of Midnight’s Children as well as a range of medical sources related to alcohol and inebriation, it will illustrate how drinking is central to Rushdie’s approach to secular and religious identities in newly independent India, as well as a means of satirising and undermining the supposed benefit that Empire presented to India and Indians
Ethnic differences in blood lipids and dietary intake between UK children of black African, black Caribbean, South Asian, and white European origin: the Child Heart and Health Study in England (CHASE).
BACKGROUND: Ischemic heart disease (IHD) rates are lower in UK black Africans and black Caribbeans and higher in South Asians when compared with white Europeans. Ethnic differences in lipid concentrations may play a part in these differences. OBJECTIVE: The objective was to investigate blood lipid and dietary patterns in UK children from different ethnic groups. DESIGN: This was a cross-sectional study in 2026 UK children (including 285 black Africans, 188 black Caribbeans, 534 South Asians, and 512 white Europeans) attending primary schools in London, Birmingham, and Leicester. We measured fasting blood lipid concentrations and collected 24-h dietary recalls. RESULTS: In comparison with white Europeans, black African children had lower total cholesterol (-0.14 mmol/L; 95% CI: -0.25, -0.04 mmol/L), LDL-cholesterol (-0.10 mmol/L; 95% CI: -0.20, -0.01 mmol/L), and triglyceride concentrations (proportional difference: -0.11 mmol/L; 95% CI: -0.16, -0.06 mmol/L); HDL-cholesterol concentrations were similar. Lower saturated fat intakes (-1.4%; 95% CI: -1.9%, -0.9%) explained the differences between total and LDL cholesterol. Black Caribbean children had total, LDL-cholesterol, HDL-cholesterol, and triglyceride concentrations similar to those for white Europeans, with slightly lower saturated fat intakes. South Asian children had total and LDL-cholesterol concentrations similar to those for white Europeans, lower HDL-cholesterol concentrations (-0.7 mmol/L; 95% CI: -0.11, -0.03 mmol/L), and elevated triglyceride concentrations (proportional difference: 0.14 mmol/L; 95% CI: 0.09, 0.20 mmol/L); higher polyunsaturated and monounsaturated fat intakes did not explain these lipid differences. CONCLUSIONS: Only black African children had a blood lipid profile and associated dietary pattern likely to protect against future IHD. The loss of historically lower LDL-cholesterol concentrations among UK black Caribbeans and South Asians may have important adverse consequences for future IHD risk in these groups
Classroom tasks and student ability effects on motivation goal orientation in early adolescence : a cognitive-developmental study
Motivation goal orientation declines across school years from learning to master tasks to learning for grades, to please others, avoid negative evaluations, or to do the task as quickly as possible. This research assessed the relationship between different types of language arts tasks, student ability levels, and motivation goal orientation in sixth grade. Six high, six average, and six low achievers (nine girls and nine boys) comprised the sample. Motivation goal orientations are defined as learning to master tasks and increase competence (task-mastery), learning for a grade, to please others, or avoid a negative evaluation of ability (ego-social), or to do the task as quickly as possible (work-avoidant). Tasks are written products that demonstrate student proficiency. Classroom tasks were collected for eight days and quantitatively analyzed by cognitive level and the type of written response required (literacy response). Tasks below application cognitive levels and below sentences literacy response are simple tasks; tasks application and above, and sentences and above are complex tasks. Each student was interviewed on at least two simple and two complex tasks. Interviews were analyzed for motivation goal orientation
Antimicrobial resistance (AMR) nanomachines: mechanisms for fluoroquinolone and glycopeptide recognition, efflux and/or deactivation
In this review, we discuss mechanisms of resistance identified in bacterial agents Staphylococcus aureus and the enterococci towards two priority classes of antibiotics—the fluoroquinolones and the glycopeptides. Members of both classes interact with a number of components in the cells of these bacteria, so the cellular targets are also considered. Fluoroquinolone resistance mechanisms include efflux pumps (MepA, NorA, NorB, NorC, MdeA, LmrS or SdrM in S. aureus and EfmA or EfrAB in the enterococci) for removal of fluoroquinolone from the intracellular environment of bacterial cells and/or protection of the gyrase and topoisomerase IV target sites in Enterococcus faecalis by Qnr-like proteins. Expression of efflux systems is regulated by GntR-like (S. aureus NorG), MarR-like (MgrA, MepR) regulators or a two-component signal transduction system (TCS) (S. aureus ArlSR). Resistance to the glycopeptide antibiotic teicoplanin occurs via efflux regulated by the TcaR regulator in S. aureus. Resistance to vancomycin occurs through modification of the D-Ala-D-Ala target in the cell wall peptidoglycan and removal of high affinity precursors, or by target protection via cell wall thickening. Of the six Van resistance types (VanA-E, VanG), the VanA resistance type is considered in this review, including its regulation by the VanSR TCS. We describe the recent application of biophysical approaches such as the hydrodynamic technique of analytical ultracentrifugation and circular dichroism spectroscopy to identify the possible molecular effector of the VanS receptor that activates expression of the Van resistance genes; both approaches demonstrated that vancomycin interacts with VanS, suggesting that vancomycin itself (or vancomycin with an accessory factor) may be an effector of vancomycin resistance. With 16 and 19 proteins or protein complexes involved in fluoroquinolone and glycopeptide resistances, respectively, and the complexities of bacterial sensing mechanisms that trigger and regulate a wide variety of possible resistance mechanisms, we propose that these antimicrobial resistance mechanisms might be considered complex ‘nanomachines’ that drive survival of bacterial cells in antibiotic environments
Positive and Negative Regulation of Gli Activity by Kif7 in the Zebrafish Embryo
Loss of function mutations of Kif7, the vertebrate orthologue of the Drosophila Hh pathway component Costal2, cause defects in the limbs and neural tubes of mice, attributable to ectopic expression of Hh target genes. While this implies a functional conservation of Cos2 and Kif7 between flies and vertebrates, the association of Kif7 with the primary cilium, an organelle absent from most Drosophila cells, suggests their mechanisms of action may have diverged. Here, using mutant alleles induced by Zinc Finger Nuclease-mediated targeted mutagenesis, we show that in zebrafish, Kif7 acts principally to suppress the activity of the Gli1 transcription factor. Notably, we find that endogenous Kif7 protein accumulates not only in the primary cilium, as previously observed in mammalian cells, but also in cytoplasmic puncta that disperse in response to Hh pathway activation. Moreover, we show that Drosophila Costal2 can substitute for Kif7, suggesting a conserved mode of action of the two proteins. We show that Kif7 interacts with both Gli1 and Gli2a and suggest that it functions to sequester Gli proteins in the cytoplasm, in a manner analogous to the regulation of Ci by Cos2 in Drosophila. We also show that zebrafish Kif7 potentiates Gli2a activity by promoting its dissociation from the Suppressor of Fused (Sufu) protein and present evidence that it mediates a Smo dependent modification of the full length form of Gli2a. Surprisingly, the function of Kif7 in the zebrafish embryo appears restricted principally to mesodermal derivatives, its inactivation having little effect on neural tube patterning, even when Sufu protein levels are depleted. Remarkably, zebrafish lacking all Kif7 function are viable, in contrast to the peri-natal lethality of mouse kif7 mutants but similar to some Acrocallosal or Joubert syndrome patients who are homozygous for loss of function KIF7 alleles
Promoting breastfeeding in women with gestational diabetes mellitus in high-income settings:an integrative review
Background: Breastfeeding provides many short- and long-term health benefits for mothers and their infants and is a particularly relevant strategy for women who experience Gestational Diabetes Mellitus (GDM) during pregnancy. However, breastfeeding rates are generally lower amongst this group of women than the general population. This review’s objective is to identify the factors that influence breastfeeding by exploring the experiences and outcomes of women in in high-income health care contexts when there is a history of GDM in the corresponding pregnancy. Methods: A comprehensive search strategy explored the electronic databases Medline, CINAHL, Web of Science and Scopus for primary studies exploring breastfeeding practices for papers published between January 2011 and June 2023. All papers were screened independently by two researchers with included papers assessed using the Crowe Critical Appraisal tool. Findings were analysed using a narrative synthesis framework. Results: From an initial search result of 1037 papers, 16 papers representing five high-income nations were included in this review for analysis – the United States of America (n = 10), Australia (n = 3), Finland (n = 1), Norway (n = 1), and Israel (n = 1). Fifteen papers used a quantitative design, and one used a qualitative design. The total number of participants represented in the papers is 963,718 of which 812,052 had GDM and 151,666 did not. Women with an immediate history of GDM were as likely to initiate breastfeeding as those without it. However, they were more likely to have the first feed delayed, be offered supplementation, experience delayed lactogenesis II and or a perception of low supply. Women were less likely to exclusively breastfeed and more likely to completely wean earlier than the general population. Maternity care practices, maternal factors, family influences, and determinants of health were contextual and acted as either a facilitator or barrier for this group. Conclusion: Breastfeeding education and support need to be tailored to recognise the individual needs and challenges of women with a history of GDM. Interventions, including the introduction of commercial milk formula (CMF) may have an even greater impact and needs to be very carefully considered. Supportive strategies should encompass the immediate and extended family who are major sources of influence.</p
- …
