Featured Research

from universities, journals, and other organizations

Specific bacteria linked to indoor water-damage and mold identified

Date:
June 19, 2012
Source:
University of Cincinnati Academic Health Center
Summary:
Bacterial contamination in water-damaged buildings has been identified as a potential cause of health problems, including infection and respiratory conditions like asthma. An environmental health research team found evidence linking two specific strains of bacteria -- Stenotrophomonas and Mycobacterium -- to indoor mold from water damage.

Bacterial contamination in water-damaged buildings has been identified as a potential cause of health problems, including infection and respiratory conditions like asthma. Which specific bacteria contribute to these problems, however, has been unknown -- making it difficult for public health officials to develop tools to effectively address the underlying source of the problem.

Related Articles


In a new study, a University of Cincinnati (UC) environmental health research team found evidence linking two specific strains of bacteria -- Stenotrophomonas and Mycobacterium -- to indoor mold from water damage. The research is part of the U.S. Department of Housing and Urban Development's investment in research to protect the health of children from hazards in the home.

"If we are going to understand the role of indoor bacteria in human health, we must be able to identify and quantify the relevant bacterial species contributing to the health problems," says Atin Adhikari, PhD, assistant professor of environmental health at the UC College of Medicine and principal investigator of the study.

"The association between bacterial contamination and respiratory health has lagged behind mold studies because it is difficult to determine which species of bacteria are growing in homes and most of the bacterial species are non-culturable and not identified yet," adds Adhikari. "These new data will help us more accurately target and combat the bacteria and to explore synergistic health effects of bacteria and molds growing in water damaged homes."

The UC-based team will report its findings June 18, 2012, at the American Society for Microbiology meeting in San Francisco.

For this study, Adhikari and UC postdoctoral fellow Eric Kettleson, PhD, analyzed samples collected from 42 homes from the Cincinnati Childhood Allergy and Air Pollution Study, a National Institute of Environmental Health Sciences-funded project examining the long-term effects of environmental exposures on respiratory health and allergy development in children.

Included homes fell into one of two categories -- "high mold" or "low mold" -- based on previously reported environmental relative moldiness index (ERMI), a DNA-based mold level analysis tool developed by the U.S. Environmental Protection Agency (EPA) that combines results of the analysis of 36 different types of mold into one index to describe a home's cumulative mold burden.

The team then compared the ERMI values and types of bacteria found in both high- and low-mold homes in an effort to better understand the environmental sources and home characteristics that influence indoor bacterial contamination.

They found strong correlations between Mycobacterium and visible mold and also between Stenotrophomonas and environmental relative moldiness index.

"Stenotrophomonas maltophilia -- an emerging multidrug-resistant global opportunistic pathogen -- was isolated from numerous environmental sources. Surprisingly, it was never assessed quantitatively in indoor home environments -- especially in water damaged homes where this can be a real concern and may cause inhalation exposure risks to occupants. Stenotrophomonas maltophilia is the first bacterial species associated with higher ERMI values in homes," adds Kettleson.

Co-authors of this study include Stephen Vesper, PhD, of the U.S. Environmental Protection Agency (EPA); and Tiina Reponen, PhD, Sergey Grinshpun, PhD, and Sudhir Kumar, PhD of the Department of Environmental Health.

This study was partially funded by the U.S. Department of Housing and Urban Development, National Institute of Environmental Health Sciences and U.S. Environmental Protection Agency's Office of Research.


Story Source:

The above story is based on materials provided by University of Cincinnati Academic Health Center. Note: Materials may be edited for content and length.


Cite This Page:

University of Cincinnati Academic Health Center. "Specific bacteria linked to indoor water-damage and mold identified." ScienceDaily. ScienceDaily, 19 June 2012. <www.sciencedaily.com/releases/2012/06/120619230226.htm>.
University of Cincinnati Academic Health Center. (2012, June 19). Specific bacteria linked to indoor water-damage and mold identified. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2012/06/120619230226.htm
University of Cincinnati Academic Health Center. "Specific bacteria linked to indoor water-damage and mold identified." ScienceDaily. www.sciencedaily.com/releases/2012/06/120619230226.htm (accessed October 25, 2014).

Share This



More Plants & Animals News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
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

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


Plants & Animals

Earth & Climate

Fossils & Ruins

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