803 research outputs found
The combined use of gemcitabine and ifosfamide in patients with Stage III or IV non-small cell lung cancer (NSCLC)
published_or_final_versio
Oral coriolus versicolor polysaccharide peptide is beneficial by slowing the progression of lung cancer
published_or_final_versio
Efficacy and safety profiles of a combination of gemcitabine and ifosfamide on Chinese patients with advanced non-small cell lung cancer
published_or_final_versio
Adherence of pseudomonas aeruginosa to basement membrane collagen in vitro
published_or_final_versio
Rapid transport of East Asian pollution to the deep tropics
Abstract. Anthropogenic emissions from East Asia have increased over recent decades, and under the prevailing westerly winds, these increases have led to changes in atmospheric composition as far afield as North America. Here we show that, during Northern Hemisphere (NH) winter, pollution originating in East Asia also directly affects atmospheric composition in the deep tropics. We present observations of marked intra-seasonal variability in the anthropogenic tracer perchloroethene (C2Cl4) collected at two locations in Borneo during the NH winter of 2008/09. We use the NAME trajectory model to show that the observed enhancements in C2Cl4 mixing ratio are caused by rapid meridional transport, in the form of "cold surges", from the relatively polluted East Asian land mass. In these events air masses can move across > 30° of latitude in 4 days. We then present data from the Monitoring Atmospheric Composition and Climate reanalysis which suggests that air masses high in C2Cl4 may also contain levels of the pollutants carbon monoxide and ozone that are approximately double the typical "background" levels in Borneo. Convection in Southeast Asia can be enhanced by cold surges, and further trajectory calculations indicate that the polluted air masses can subsequently be lifted to the tropical upper troposphere. This suggests a potentially important connection between mid-latitude pollution sources and the very low stratosphere.
This work was supported by a NERC consortium grant to the OP3 team,
by NCAS, by the European Commission through the SCOUT-O3 project (505390-GOCECF2004),
though the ERC ACCI project, Project No 267760, and by NERC western Pacific
grant number NE/F020341/1 and NERC CAST grant number NE/J006246/1. M. J. Ashfold
thanks NERC for a research studentship. A. D. Robinson acknowledges NERC for their support
through small grant project NE/D008085/1. N. R. P. Harris is supported by a NERC Advanced
Research Fellowship. We thank the Sabah Foundation, Danum Valley Field Centre and
the Royal Society (Glen Reynolds) for field site support. This is paper number X of the Royal
Society’s South East Asian Rainforest Research Programme. We are grateful for use of data
provided by the MACC-II project, funded by the European Union under the 7th Framework Programme.
We also acknowledge use of the NAME atmospheric dispersion model and associated
NWP meteorological data sets made available to us by the Met O ce. We acknowledge the
significant storage resources and analysis facilities made available to us on JASMIN by STFC
CEDA along with the corresponding support teams.This is the published version. It first appeared at: http://www.atmos-chem-phys-discuss.net/14/30705/2014/acpd-14-30705-2014.html
Combination of paclitaxel and carboplatin in advanced non-small cell lung cancer (NSCLC)
Session - Respiratory & Critical Care Medicine: no. G-RC-13published_or_final_versio
Baseline assessment of WHO's target for both availability and affordability of essential medicines to treat non-communicable diseases
Background: WHO has set a voluntary target of 80% availability of affordable essential medicines, including generics, to treat major non-communicable diseases (NCDs), in the public and private sectors of countries by 2025. We undertook a secondary analysis of data from 30 surveys in low- and middle-income countries, conducted from 2008-2015 using the World Health Organization (WHO)/Health Action International (HAI) medicine availability and price survey methodology, to establish a baseline for this target. Methods Data for 49 medicines (lowest priced generics and originator brands) to treat cardiovascular diseases (CVD), diabetes, chronic obstructive pulmonary diseases (COPD) and central nervous system (CNS) conditions were analysed to determine their availability in healthcare facilities and pharmacies, their affordability for those on low incomes (based on median patient prices of each medicine), and the percentage of medicines that were both available and affordable. Affordability was expressed as the number of days' wages of the lowestpaid unskilled government worker needed to purchase 30 days' supply using standard treatment regimens. Paying more than 1 days' wages was considered unaffordable. Findings In low-income countries, 15.2% and 18.9% of lowest-priced generics met WHO's target in the public and private sectors, respectively, and 2.6% and 5.2% of originator brands. In lower-middle income countries, 23.8% and 23.2% of lowest priced generics, and 0.8% and 1.4% of originator brands, met the target in the public and private sectors, respectively. In upper-middle income countries, the situation was better for generics but still suboptimal as 36.0% and 39.4% met the target in public and private sectors, respectively. For originator brands in upper-middle income countries, none reached the target in the public sector and 13.7% in the private sector. Across the therapeutic groups for lowest priced generics, CVD medicines in low-income countries (11.9%), and CNS medicines in lower-middle (10.2%) and upper-middle income countries (33.3%), were least available and affordable in the public sector. In the private sector for lowest priced generics, CNS medicines were least available and affordable in all three country income groups (11.4%, 5.8% and 29.3% in low-, lower-middle and upper-middle income countries respectively). Interpretation This data, which can act as a baseline for the WHO target, shows low availability and/or poor affordability is resulting in few essential NCD medicines meeting the target in low- and middle-income countries. In the era of Sustainable Development Goals, and as countries work to achieve Universal Health Coverage, increased commitments are needed by governments to improve the situation through the development of evidence-informed, nationallycontextualised interventions, with regular monitoring of NCD medicine availability, patient prices and affordability.IS
Inhaled fluticasone therapy improves quality of life in bronchiectasis
published_or_final_versio
Long-term halocarbon observations from a coastal and an inland site in Sabah, Malaysian Borneo
Abstract. Short-lived halocarbons are believed to have important sources in the tropics, where rapid vertical transport could provide a significant source to the stratosphere. In this study, quasi-continuous measurements of short-lived halocarbons are reported for two tropical sites in Sabah (Malaysian Borneo), one coastal and one inland (rainforest). We present the observations for C2Cl4, CHBr3, CH2Br2* (actually ~80% CH2Br2 and ~20% CHBrCl2) and CH3I from November 2008 to January 2010 made using our μDirac gas chromatographs with electron capture detection (GC-ECD). We focus on the first 15 months of observations, showing over one annual cycle for each compound and therefore adding significantly to the few limited-duration observational studies that have been conducted thus far in southeast Asia. The main feature in the C2Cl4 behaviour at both sites is its annual cycle, with the winter months being influenced by northerly flow with higher concentrations, typical of the Northern Hemisphere, and with the summer months influenced by southerly flow and lower concentrations representative of the Southern Hemisphere. No such clear annual cycle is seen for CHBr3, CH2Br2* or CH3I. The baseline values for CHBr3 and CH2Br2* are similar at the coastal (overall median: CHBr3 1.7 ppt, CH2Br2* 1.4 ppt) and inland sites (CHBr3 1.6 ppt, CH2Br2* 1.1 ppt), but periods with elevated values are seen at the coast (overall 95th percentile: CHBr3 4.4 ppt, CH2Br2ast 1.9 ppt), presumably resulting from the stronger influence of coastal emissions. Overall median bromine values from [CHBr3 × 3] + [CH2Br2* × 2] are 8.0 ppt at the coast and 6.8 ppt inland. The median values reported here are largely consistent with other limited tropical data and imply that southeast Asia generally is not, as has been suggested, a hot spot for emissions of these compounds. These baseline values are consistent with the most recent emissions found for southeast Asia using the p-TOMCAT (Toulouse Off-line Model of Chemistry And Transport) model. CH3I, which is only observed at the coastal site, is the shortest-lived compound measured in this study, and the observed atmospheric variations reflect this, with high variability throughout the study period.
This work was supported by a NERC consortium
grant to the OP3 team, by NCAS, by the European Commission
through the SCOUT-O3 project (505390-GOCE-CF2004) and
by NERC western Pacific grant number NE/F020341/1 and NERC
CAST grant number NE/J006246/1. L. M. O’Brien and M. J. Ashfold
thank NERC for research studentships. A. D. Robinson acknowledges
NERC for their support through small grant project
NE/D008085/1. N. R. P. Harris is supported by a NERC Advanced
Research Fellowship. We thank the Sabah Foundation, Danum Valley
Field Centre and the Royal Society (Glen Reynolds) for field site
support. The research leading to these results has received funding
from the European Union’s Seventh Framework Programme
FP7/2007–2013 under grant agreement no. 226224 – SHIVA. We
thank David Oram and Stephen Humphrey at UEA for their assistance
in checking the calibration of our Aculife cylinder in May
2009.
This is paper number 626 of the Royal Society’s South East
Asian Rainforest Research Programme.This is the final published version. It first appeared at http://www.atmos-chem-phys.net/14/8369/2014/acp-14-8369-2014.html
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