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John Hutchinson , Andrew Fogarty , Richard Hubbard , Tricia McKeever
European Respiratory Journal 2015 46: 795-806; DOI: 10.1183/09031936.00185114
John Hutchinson
Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK
Andrew Fogarty
Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK
Richard Hubbard
Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK
Tricia McKeever
Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK


As idiopathic pulmonary fibrosis emerges as an important public health problem, there is a need to coordinate data on incidence and mortality globally. This study aims to systematically assess all available studies to investigate the global burden of disease.

Medline and Embase databases were searched systematically for all population-based studies of incidence or mortality of idiopathic pulmonary fibrosis. Clinical case series and prevalence studies were excluded. The search was supplemented using the Google search engine, hand-searching of references and conference abstracts. Data were extracted independently by two authors using a pre-specified proforma, with assessment of methodological quality.

34 studies were identified, providing data from 21 countries from 1968–2012. 28 studies reported incidence data and eight reported mortality data. In studies from the year 2000 onwards, we estimated a conservative incidence range of 3–9 cases per 100 000 per year for Europe and North America. Incidence was lower in East Asia and South America. The majority of studies showed an increase in incidence over time.

The incidence of idiopathic pulmonary fibrosis is increasing worldwide and rates are coming together across countries. Current data suggest incidence is similar to that of conditions such as stomach, liver, testicular and cervical cancers.

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Incidence of IPF varies worldwide but seems to be increasing to rates around 3–9 per 100 000 per year

Up to now, the inability to build ribosomes from in vitro transcribed ribosomal RNA (rRNA) in a way that mimics in vivo ribosome biogenesis has precluded the cell-free construction of ribosomes 3 . However, we recently developed an i ntegrated s ynthesis, a ssembly, and t ranslation (iSAT) technology to construct Escherichia coli ribosomes in vitro. iSAT enables one-step co-activation of ribosomal RNA (rRNA) transcription, assembly of transcribed rRNA with native ribosomal proteins into functional ribosomes, and synthesis of active protein by these ribosomes in the same reaction 12 Calvin Klein Jeans Mel mesh sneakers Cheapest cheap online shopping online free shipping THJaz32z
. In this communication, we report the use of double emulsion template to generate giant liposomes Sperry Authentic Original Leather Boat Shoes latest collections cheap price outlet prices choice cheap price free shipping new arrival MPPniEv
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to compartmentalize iSAT reactions. This demonstration is important towards the systems’ integration and synthesis of a minimal cell 1 .

With the goal of encapsulating iSAT reactions in liposomes ( Figure 1A ), we chose to build-up complexity in three stages. First, we validated iSAT protein synthesis activity in the presence of 2% (w/v) polyvinyl alcohol 13,000–23,000 molecular weight (PVA) in test tubes ( Supplementary Figure S1 ). This was necessary because PVA is used in the generation of liposomes, but not previously used in iSAT. Consistent with our previous studies 12 14 , we observed synthesis of the reporter gene superfolder green fluorescent protein (sfGFP) following a lag time of ~0.5–1 h. It is hypothesized that this is the time necessary for rRNA transcription and ribosome assembly into functional particles in the ribosome free crude S150 extract 14 . We calculated sfGFP synthesized by converting the fluorescent units into concentrations with a standard curve as previously described 18 . Approximately 3.3 μM +/− 0.26 μM of sfGFP was produced using the iSAT system with PVA in test tubes.

Figure 1
System illustrations

Second, we proceeded to compartmentalize iSAT reactions in single emulsions to test the compatibility of the system in emulsion droplets. After single emulsion generation, we monitored sfGFP synthesis with time over a ten-hour reaction using spinning disk confocal microscopy. From Supplementary Figure S2 , we can see that the synthesis of sfGFP showed a slight lag during the first ~ 0.5 h and then progressed linearly from approximately 0.5 to 6 h. Between 6 and 8 h, sfGFP synthesis stopped with 0.51 +/− 0.06μM of sfGFP produced. We observed that the protein synthesis duration was longer in emulsions when compared to the test tube (~6–8 h versus 4 h, respectively). These data showed that single emulsions are compatible containers that can be used to host the iSAT system.


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