Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Protein effects of hormone replacement therapy uncovered

29.04.2009
An in-depth proteomic analysis of the sera of 50 participants from the Women's Health Initiative (WHI) hormone replacement therapy trial provides some explanations for the trial's clinical results. The study, published in Biomed Central's open access journal Genome Medicine, shows that estrogen upregulates proteins involved in several major body processes.

Samir Hanash, M.D., Ph.D., from the Fred Hutchinson Cancer Research Center, Seattle, worked with a team of researchers to identify and quantify proteins from 2,576,869 mass spectra, the largest serum protein data set obtained from a human observational study or clinical trial to date.

He said, "Remarkably, as many as 10 percent of plasma proteins analyzed were found to be affected by estrogen hormone replacement therapy in post-menopausal women. These changes indicate a substantial effect on coagulation and metabolic proteins that may explain the increased risk of venous thromboembolism and stroke, and the reduced risk of fracture, found in the WHI trial."

The authors used baseline and one-year post-treatment sera samples from 50 women in the WHI trial, separated into five experimental pools. The average age of the subjects was 61.4 years. There were no statistically significant differences in any baseline characteristics between pools. Using the samples gathered one year after the initiation of therapy, they identified changes in serum levels of proteins directly involved in processes as disparate as osteogenesis, blood vessel morphogenesis, blood pressure regulation, immunity, inflammation and coagulation.

This work demonstrates the utility of comprehensive profiling of the serum proteome for clinical investigations. According to Hanash, "Our findings should encourage other investigators to include quantitative proteomic analysis as part of clinical trials of new therapies to better understand the effect of therapy and to identify surrogate markers of response to treatment."

1. Application of serum proteomics to the Women's Health Initiative conjugated equine estrogens trial reveals a multitude of effects relevant to clinical findings
Hiroyuki Katayama, Sophie Paczesny, Ross Prentice, Aaron Aragaki, Vitor M Faca, Sharon J Pitteri, Qing Zhang, Hong Wang, Melissa Silva, Jacob Kennedy, Jacques Rossouw, Rebecca Jackson, Judith Hsia, Rowan Chlebowski, JoAnn E Manson and Samir M Hanash

Genome Medicine (in press)

2. Genome Medicine is an online peer-reviewed journal which publishes open access research articles of outstanding quality in all areas of medicine studied from a genomic or post-genomic perspective. The journal will have a special focus on the latest technologies and findings that impact on the understanding and management of human health and disease. In addition to publishing high-quality research, Genome Medicine serves the international research community as a forum for the discussion and critical review of information about all areas of medicine informed by genomic research.

3. BioMed Central (http://www.biomedcentral.com/) is an STM (Science, Technology and Medicine) publisher which has pioneered the open access publishing model. All peer-reviewed research articles published by BioMed Central are made immediately and freely accessible online, and are licensed to allow redistribution and reuse. BioMed Central is part of Springer Science+Business Media, a leading global publisher in the STM sector.

Graeme Baldwin | EurekAlert!
Further information:
http://www.biomedcentral.com
http://www.genomemedicine.com/

More articles from Life Sciences:

nachricht Researchers identify potentially druggable mutant p53 proteins that promote cancer growth
09.12.2016 | Cold Spring Harbor Laboratory

nachricht Plant-based substance boosts eyelash growth
09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>