Navigation Links
Fighting obesity may be as easy as ATP, says UH researcher
Date:10/22/2007

HOUSTON, Oct. 22, 2007 Wearing a portable instrument to monitor metabolism in the fight against obesity and its related health consequences may be on the horizon thanks to collaborative research being performed at the University of Houston and The Methodist Hospital.

Physics Professor John Miller, director of the High-Temperature Superconducting Device Applications and Nano-Biophysics Laboratory in the Texas Center for Superconductivity at the University of Houston (TcSUH), recently received a three-year, $623,425 exploratory research grant from the National Institutes of Health (NIH) in a joint program with the National Science Foundation (NSF) on biosensors for energy balance and obesity.

In particular, Miller is targeting metabolic syndrome, a pernicious complication of obesity that affects about 20 percent of obese individuals and greatly increases the likelihood of diabetes, heart disease and cancer. His long-term goal is to develop innovative technologies that detect metabolic activity for research and clinical applications.

Although drug treatments for metabolic syndrome exist, the cost of drugs to treat all obese individuals is prohibitive, Miller said. Therefore, there is a critical public health need to develop technologies that can provide early diagnosis of metabolic syndrome and enable cost-effective treatment, as well as to measure metabolic activity and other components of energy balance in obese patients.

The chemical currency of energy and metabolism that is used by the cellular machinery of all living organisms is adenosine triphosphate (ATP) a molecule involved in more chemical reactions than any other on Earth except water. In animals, plants and fungi, ATP is produced by enzyme complexes in mitochondria that live and reproduce inside the cell. ATP molecules can be thought of as packets of fuel that power biological molecular motors. If one were to suddenly run out of ATP, death would be instantaneous. However, ATP that goes unused eventually gets converted into fat hence the growing obesity epidemic at a time when high-calorie food is plentiful.

The focus of the NIH grant is to develop sensors, based on harmonic generation spectroscopy and related techniques, that detect metabolic activity in mitochondrial complexes. Often considered the powerhouses of cells, mitochondria convert molecules extracted from the food we eat into ATP, the fuel used by the rest of the cell. The mitochondria house enzymes that carry out these steps essential to metabolism.

The NIH-funded project will focus on electrode-based sensors that detect mitochondrial enzymes in action and may lead to development of portable instruments worn by patients for continuous monitoring of resting and active metabolism, as well as other clinical devices. Moreover, studies have shown that mitochondria are often defective in patients suffering from obesity, type-2 diabetes and heart disease. It is hoped the sensors will be able to distinguish normal from dysfunctional mitochondrial activity.

Millers collaborators include William Widger, professor of biology and biochemistry at UH; and Drs. Dale Hamilton and Richard Robbins, endocrinologists in the Department of Medicine at The Methodist Hospital. The NIH award will last through Aug. 31, 2010.

In addition to the NIH project, Miller is focusing on a related project that is part of the TcSUH Biomedical Research Program and is being funded by TcSUH. It focuses more on technologies based on superconducting quantum interference devices (SQUIDs) and related magnetic sensors that measure minute changes in magnetic flux used to detect extremely small changes in magnetic fields, electric currents and voltages. This could lead to clinical instruments designed for early diagnosis of metabolic syndrome and insulin resistance.

Miller envisions that nanoscale probes eventually could be developed to image activity of individual biological molecular motors that produce ATP, such as the molecular turbine ATP synthase, which is the smallest known rotary motor in existence that produces ATP with amazing efficiency. The human body contains about sextillion of these motors that recycle anywhere from a persons own body weight to more than a ton of ATP in a single day, depending on how vigorously one exercises.

Joining UH in 1989 as a faculty member in the Department of Physics and TcSUH, Miller previously was a faculty member in the Department of Physics and Astronomy at the University of North Carolina - Chapel Hill from 1986-1989, receiving the prestigious Alfred P. Sloan Research Fellowship in 1987. He received his Ph.D. at the University of Illinois in 1985, where he studied the dynamics of charge density waves under the direction of John Tucker and two-time Nobel laureate John Bardeen.


'/>"/>

Contact: Lisa Merkl
lkmerkl@uh.edu
713-743-8192
University of Houston
Source:Eurekalert

Related medicine news :

1. ZD1839 Proves Effective - A Breakthrough in fighting Lung Cancer
2. The cancer-fighting gene
3. Dietary cure for fighting Helicobacter pylori
4. The Possibility Of Fighting HIV with Another Virus Questioned
5. Beer Found To Be Effective In Fighting Cardiovascular Disease
6. New food guide for people fighting excess weight
7. Chemo may not assist in fighting cancer
8. Policemen face trouble fighting malaria
9. Fighting against disease as easy as eating eggs
10. New Drug Combination For Fighting Tuberculosis
11. LG To Market Air Conditioner Capable of Fighting Bird Flu
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/27/2017)... ... February 27, 2017 , ... Anahata ... Spiritual Awakening, is happy to announce her “Spring Rejuvenation in Sedona” personally ... individual customized retreats offer the winter-weary soul an excellent opportunity to come out ...
(Date:2/27/2017)... ... ... Orange County dentist, Dr. A. Rassouli, comments on the new ... bacteria in plaque infect the gums and other tissues supporting the teeth. Treatment typically ... SRP, and can include surgical therapies if the condition has led to significant damage. ...
(Date:2/27/2017)... ... February 27, 2017 , ... Texas based ... In addition, Discount Power's RCE (Residential Customer Equivalent) count exceeds 150,000. ... company had 800 customers and 2,250 RCEs at the time of acquisition. In ...
(Date:2/27/2017)... ... ... New Jersey ranks among the top five states in the entire nation ... advanced services is growing. , Project WE vs C is a focused two-year ... non-profit partners in their fight against cancer and in support of their shared mission ...
(Date:2/26/2017)... ... February 26, 2017 , ... NuevaCare, a leading home care ... Millbrae, Belmont, and Palo Alto, is proud to announce an important upgrade to its ... look for home care close to home, and by having city-specific pages, NuevaCare is ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... 2017 Research and Markets has announced the ... - Industry Forecast to 2025" report to their offering. ... The Global Wireless ... 23.8% over the next decade to reach approximately $330.5 billion by ... forecasts for all the given segments on global as well as ...
(Date:2/24/2017)... 2017 Research and Markets has announced the addition ... report to their offering. ... The latest research Hemophilia Drugs Price Analysis and Strategies - 2016, provides ... research answers the following questions: What are ... they positioned in the Global Hemophilia market? What are ...
(Date:2/24/2017)... 2017  In conjunction with DURECT Corporation,s (Nasdaq: ... release, you are invited to listen to a conference ... on Tuesday, March 14, 2017 at 4:30 pm Eastern ... audio webcast of the presentation will be available by ... "Investor Relations."  If you are unable to participate during ...
Breaking Medicine Technology: