Featured Research

from universities, journals, and other organizations

New System Blocks HIV Transmission Via Breastfeeding

Date:
July 3, 2008
Source:
International & American Association for Dental Research
Summary:
Researchers are developing a new technology that prevents the infection of HIV by breastfeeding.

Acquired Immune Deficiency Syndrome (AIDS) is a global epidemic threatening the lives of millions of people. Because there is no known cure, prevention of the transmission of the virus that causes AIDS, the Human Immunodeficiency Virus (HIV), is critical for controlling the disease. The transmitting routes of HIV include breastfeeding, which passes the virus from mothers to infants.

This is a major problem in many areas of Africa, where HIV-positive mothers have no alternative to breastfeeding. So far, no practical and effective methods are available to prevent HIV transmission by this route.

A team of researchers from Lavax (Palatine, Ill.) and the University of Illinois at Chicago, reporting today during the 86th General Session of the International Association for Dental Research (IADR), is developing a new technology that prevents the infection of HIV by breastfeeding. They have isolated a special strain of probiotic lactobacilli from the human mouth. It belongs to the same species as those found in dairy foods, such as yogurt and kefir.

This strain captures the HIV virus by binding to its outer 'envelope'. Because it grows and reproduces itself in milk, once an infant is inoculated with the Lactobacillus, the protection may last until the infant is weaned. This technology offers an easily administered alternative to HIV vaccines, which are currently unavailable. However, the hot climate and the lack of refrigeration in Africa pose a great challenge for the shelf life of lactobacilli.

The aim of this study was to develop a lasting formula of lactobacilli for infants to be used as prevention against the transmission of HIV through breastfeeding.

Currently, the best bio-protecting agents for lactobacilli are sucrose and trehalose. These sugars preserve freeze-dried lactobacilli well at 4C and 20C. However, at a warmer temperature (33C), after 4 weeks of storage, all Lactobacillus cells protected with sucrose or trehalose die. By screening a variety of food ingredients for a better protective agent, the investigators have identified a new alternative. This new agent kept the HIV-capturing Lactobacillus strain viable for more than 12 weeks at 33C. Their analysis showed that, after 12 weeks, the Lactobacillus in the infant formula was as good as fresh Lactobacillus in capturing HIV and blocking the HIV infection of cultured mammalian cells.

In summary, scientists have developed a new preservation method that can maintain HIV-capturing lactobacilli in a hot climate without refrigeration. This method will facilitate the development of a safe and effective prophylactic formula to protect infants from HIV in mother's milk.

This study was supported by an IADR/GlaxoSmithKline Innovation in Oral Care Award and by NIH grant #AI68528.

This is a summary of an abstract entitled "An Infant Formula Blocking HIV Transmission via Breastfeeding", by R. Chang and L. Tao, of Lavax (Palatine, Ill.) and the University of Illinois at Chicago, to be presented on July 3, 2008, in Hall D-E of the Metro Toronto Convention Centre, Toronto, ON, Canada, during the 86th General Session of the International Association for Dental Research.


Story Source:

The above story is based on materials provided by International & American Association for Dental Research. Note: Materials may be edited for content and length.


Cite This Page:

International & American Association for Dental Research. "New System Blocks HIV Transmission Via Breastfeeding." ScienceDaily. ScienceDaily, 3 July 2008. <www.sciencedaily.com/releases/2008/07/080703125224.htm>.
International & American Association for Dental Research. (2008, July 3). New System Blocks HIV Transmission Via Breastfeeding. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2008/07/080703125224.htm
International & American Association for Dental Research. "New System Blocks HIV Transmission Via Breastfeeding." ScienceDaily. www.sciencedaily.com/releases/2008/07/080703125224.htm (accessed October 22, 2014).

Share This



More Health & Medicine News

Wednesday, October 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

CDC Revamps Ebola Guidelines After Criticism

CDC Revamps Ebola Guidelines After Criticism

Newsy (Oct. 21, 2014) The Centers for Disease Control and Prevention have issued new protocols for healthcare workers interacting with Ebola patients. Video provided by Newsy
Powered by NewsLook.com
WHO: Ebola Vaccine Trials to Start a in January

WHO: Ebola Vaccine Trials to Start a in January

AP (Oct. 21, 2014) Tens of thousands of doses of experimental Ebola vaccines could be available for "real-world" testing in West Africa as soon as January as long as they are deemed safe in soon to start trials, the World Health Organization said Tuesday. (Oct. 21) Video provided by AP
Powered by NewsLook.com
First-Of-Its-Kind Treatment Gives Man Ability To Walk Again

First-Of-Its-Kind Treatment Gives Man Ability To Walk Again

Newsy (Oct. 21, 2014) A medical team has for the first time given a man the ability to walk again after transplanting cells from his brain onto his severed spinal cord. Video provided by Newsy
Powered by NewsLook.com
CDC Issues New Ebola Guidelines for Health Workers

CDC Issues New Ebola Guidelines for Health Workers

Reuters - US Online Video (Oct. 21, 2014) The U.S. Centers for Disease Control and Prevention has set up new guidelines for health workers taking care of patients infected with Ebola. Linda So reports. Video provided by Reuters
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