Featured Research

from universities, journals, and other organizations

Low birth weight may cause lifelong problems processing medications

Date:
November 11, 2010
Source:
Oregon State University
Summary:
New research has found that a mother's poor nutrition during pregnancy and nursing can cause problems for her offspring's ability to process medications, even well into adulthood.

New research has found that a mother's poor nutrition during pregnancy and nursing can cause problems for her offspring's ability to process medications, even well into adulthood.

Related Articles


The results of the study, by Oregon State University researchers, suggest that in the future physicians prescribing drugs ranging from Tylenol to cancer chemotherapies may need to factor birth weight along with body weight into dosing decisions for their patients.

In this laboratory study, the kidneys of underweight animals born to mothers fed low-protein diets during pregnancy and nursing had significantly less ability to process and transport drugs than animals whose mothers had adequate protein. This finding suggests that low birth weight may hinder the body's ability to process therapeutic drugs, thereby jeopardizing their effectiveness.

The culprit appears to be a protein called a "drug transporter," said Ganesh Cherala, an assistant professor in the OSU College of Pharmacy.

"These transporters, which sit on the cell membrane, grab the drug molecules from the blood and put them into the cell," he explained. "Then a second set of transporters grab the drug from the cell and dump it into the urine."

In the low birth-weight animals, the transporters Cherala looked at -- called OAT 1 (Organic Anion Transporter) and Pgp (P Glycoprotein) -- were anywhere from two to 50 times less prevalent than in the normal birth-weight animals, depending on age and transporter type. The gap showed up across genders, although females showed a greater deficit over time.

Fewer kidney transporters mean that less medication can be excreted out of the body, according to Cherala. The harmful results can range from toxic buildup of drugs in the blood to inadequate therapeutic benefits from the medication prescribed.

There are several ironies in this finding, Cherala pointed out. First, scientists know that low birth weight increases risks for diabetes in humans, as well as cardiovascular disease and metabolic syndrome (high levels of cholesterol, blood sugar and blood pressure). Thus, low birth-weight patients are more likely than normal birth-weight people to need medication during their lifetime. Yet these same subjects may be less able to process the drugs they need.

Second, researchers have found a link between low birth weight and adult obesity in humans. Because current weight is a major determiner of drug dosages (along with height, age and gender), obese patients typically get higher doses from their doctors than non-obese patients. But if a patient's obesity stems from low birth weight, the higher dose may be more than his or her body can process.

"Let's say I'm low birth weight, and because of that I become obese," said Cherala, who works at the OSU College of Pharmacy's Portland laboratory at the Oregon Health Science University downtown waterfront facility. "If you dose me because of that higher body weight, you're actually compounding the problem. You're making the assumption that if you're higher body weight, you have more transporters. Actually, it's exactly the opposite."

The findings will be presented on Nov. 16 at the annual meeting of the American Association of Pharmaceutical Scientists in New Orleans.

"The main goal of our lab is to discover how we can use birth weight to optimize the dose and personalize the dosing regimen," Cherala said.


Story Source:

The above story is based on materials provided by Oregon State University. Note: Materials may be edited for content and length.


Cite This Page:

Oregon State University. "Low birth weight may cause lifelong problems processing medications." ScienceDaily. ScienceDaily, 11 November 2010. <www.sciencedaily.com/releases/2010/11/101110091120.htm>.
Oregon State University. (2010, November 11). Low birth weight may cause lifelong problems processing medications. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2010/11/101110091120.htm
Oregon State University. "Low birth weight may cause lifelong problems processing medications." ScienceDaily. www.sciencedaily.com/releases/2010/11/101110091120.htm (accessed October 24, 2014).

Share This



More Health & Medicine News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. Video provided by Newsy
Powered by NewsLook.com
Ebola Fears Keep Guinea Hospitals Empty

Ebola Fears Keep Guinea Hospitals Empty

AP (Oct. 23, 2014) Fears of Ebola are keeping doctors and patients alike away from hospitals in the West African nation of Guinea. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Despite Rising Death Toll, Many Survive Ebola

Despite Rising Death Toll, Many Survive Ebola

AP (Oct. 23, 2014) The family of a Dallas nurse infected with Ebola in the US says doctors can no longer detect the virus in her. Despite the mounting death toll in West Africa, there are survivors there too. (Oct. 23) Video provided by AP
Powered by NewsLook.com
Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Working Mother (Oct. 22, 2014) Is your child ready? Video provided by Working Mother
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins