Navigation Links
Shades of 1918? New study compares avian flu with a notorious killer from the past
Date:2/10/2009

gton. Using this strategy, respiratory tissue was analyzed with high-throughput technologies of functional genomics, proteomics and transcriptomics to measure gene expression and regulation in fine-grained detail. Such techniques have opened a new window onto the genetic underpinnings of infectious disease.

A large number of these genes code for cytokines and chemokinesimmunomodulating agents which include interleukins, interferons and other factors involved with the host's innate inflammatory response to infection. The result of this overwhelming transcription induction, shown graphically in figure 1, is a "cytokine storm" often leading to acute respiratory distress syndrome in the viral host, while proving entirely ineffective in blunting prodigious replication of the H5N1 virus.

Respiratory tissues sampled on days 1, 2 4 and 7 post-infection were subjected to pathological, viral and microarray analysis. Although the 1918 ressortant strains were found to be highly virulent, they were outmatched by H5N1's rapid onset, overwhelming transcription induction of cytokine and chemokine genes and headlong, sustained viral replication with wider distribution in the lungs. As Baskin notes, referring to the group's measurements of Tissue Culture Infectious Dose or TCID over the course of H5N1's infection, "the take home message is that for H5N1 there is hardly any viable tissue left to infect by day 7, yet there is still very strong viral replication." Further, despite the broad and sustained upregulation of inflammatory genes, they were of no use in limiting the H5N1 infection.

While the new study found that the 1918 ressortant strains and H5N1 each attacked specialized respiratory cells called pneumocytes, the 1918 chimaraes showed preference for so-called type I pneumocytes, responsible for air exchange in the lungs. In contrast, H5N1 characteristically infects the more numerous type II pneumocytes, a critical distinction, as Dr. Baskin explains:
'/>"/>

Contact: Joe Caspermeyer
joseph.caspermeyer@asu.edu
480-727-0369
Arizona State University
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. International study identifies gene variants associated with early heart attack
2. Genetic study shows direct link between vitamin D and MS susceptibility gene
3. Statement by the Egg Nutrition Center and American Egg Board on Diabetes Care study on egg consumption
4. Molecule that suppresses immune response under study in type 1 diabetes
5. UNC study: Tinkering with the circadian clock can suppress cancer growth
6. Small male chimps use politics, rather than aggression, to lead the pack, U of Minnesota study says
7. Results of the third school nutrition dietary assessment study published
8. TGen Clinical Research Services at Scottsdale Healthcare and Mayo Clinic study new cancer drug
9. Study finds rescue course of antenatal steroids improves outcome in premature babies
10. Brain structure assists in immune response, according to Penn vet study
11. Study finds MRSA in Midwestern swine, workers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Shades of 1918? New study compares avian flu with a notorious killer from the past
(Date:7/25/2014)... of biomedical engineering at the University of Houston, ... and artificial organ development., "Introduction to Tissue Engineering: ... entering into the field of artificial organ development. ... engineering at UH, served as a series editor ... are other published books on the subject of ...
(Date:7/25/2014)... (NRG1) is a pleiotropic factor characterized by the ... of exons that confer to the protein deeply ... both the myelination occurring during development and the ... nerve: axon degeneration, axon regrowth, remyelination and target ... have discovered that the soluble NRG1 upregulation observed ...
(Date:7/25/2014)... girls reach puberty is influenced by ,imprinted genes,a subset of ... gene. This is the first evidence that imprinted genes ... of this study were published today in the journal ... menarche, is a marker for the timing of puberty in ... varies between girls, is an inherited trait, and is linked ...
Breaking Biology News(10 mins):University of Houston researcher publishes textbook on tissue engineering 2Could age of first period influence development of diseases in older women? 2
... MOConstructing a body is like building a houseif you compromise ... on a cellular level than in the case of epithelial ... from the gut to mammary glands. As long as epithelial ... business of building tissue barriers and constructing ducts goes smoothly. ...
... to the brain could be developed thanks to new research. ... able to regenerate protective sheaths around nerve fibres in the ... myelin, are critical for the quick transmission of nerve signals, ... with multiple sclerosis (MS). The study, by the Universities ...
... to assess the status of dozens of European fish stocks ... are being fished sustainably today and that, given time, those ... Cell Press journal Current Biology on July 18, ... European Union,s Common Fisheries Policy is failing, the researchers say. ...
Cached Biology News:A flip of the mitotic spindle has disastrous consequences for epithelial cells 2A flip of the mitotic spindle has disastrous consequences for epithelial cells 3A flip of the mitotic spindle has disastrous consequences for epithelial cells 4MS research could help repair damage affecting nerves 2European fish stocks poised for recovery 2
(Date:7/25/2014)... , July 25, 2014 /PRNewswire-iReach/ -- Xybion ... consulting for global corporations operating in highly regulated ... its first annual Global User Group Conference, Xybion ... Philadelphia, Pennsylvania at the ... http://photos.prnewswire.com/prnh/20140724/130263 This year,s ...
(Date:7/24/2014)... Gain recognition for leadership and ... the biotech industry. Nominations are now being accepted ... you by the Bio Supply Management Alliance ... management professionals for the past 7 years. , ... Biotech industry – Manufacturers, Service Providers, Material Suppliers, ...
(Date:7/24/2014)... A research team led by group leader Yung-Eun ... technology to synthesize sulfur-doped and nitrogen-doped graphenes which ... secondary batteries and fuel cells. Yung-Eun Sung is ... Nanoparticle Research at Institute for Basic Science* (IBS) ... , This achievement has great significance with regards ...
(Date:7/24/2014)... July 24, 2014 Research and Markets ... Genomics and Proteomics Analytical Instruments Market 2014-2018" report ... Genomics is the study of the ... of the structure and functions of proteomes or sets ... and technology. Genomics involves the mapping of genes and ...
Breaking Biology Technology:Xybion Announces It Will Host International User Conference in Philadelphia 2Xybion Announces It Will Host International User Conference in Philadelphia 3Call for Submission: BSMA’s Supply Chain Management Innovation Awards 2Call for Submission: BSMA’s Supply Chain Management Innovation Awards 3Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 2
... , , , , , ... Kits and Ser/Thr Kinase , Kit provide fast and ... serine/threonine kinases. LiquiChip 10-Cytokine Kits enable simultaneous , multiplex ... The LiquiChip Ser/Thr Kinase Kit enables highly sensitive assay of kinases , ...
... , The proven activated dendrimer for transfection , of a ... and benefits , , Fast ... cell lines , Transfection in the presence of serum (see figure ... , High transient and stable transfection efficiencies , ...
... , For purification of endotoxin-free ultrapure , plasmid or cosmid DNA , ... , Less than 0.1 EU/g plasmid DNA , ... Greater than 90% recovery of plasmid DNA , Fast and simple ... , , * Actual yields depend on plasmid copy number, size ...
Cached Biology Technology:LiquiChip Kits for bead-based cytokine and kinase assays 2LiquiChip Kits for bead-based cytokine and kinase assays 3SuperFect Transfection Reagent 2SuperFect Transfection Reagent 3EndoFree Plasmid Kits 2EndoFree Plasmid Kits 3EndoFree Plasmid Kits 4
Rabbit polyclonal to ErbB 2 (phospho Y1248) ( Abpromise for all tested applications). entrezGeneID: 2064 SwissProtID: P04626...
The Microseal 384 plate positioner ensures precise positioning of Microseal 384-well plates in the x-, y-, and z-dimensions, for accurate automated liquid handling....
... This thin foil heat sealing material ... pressure from a screw down heated ... is a useful method for sample ... over the existing seal. Ideal for ...
... DS-U2 camera controller is the successor to the ... interface any of the cameras in the Nikon ... a USB2.0 interface. The DS-U2 transmits information at ... by equipping both hub and mass storage USB ...
Biology Products: