Navigation Links
Nicotine exposure during development leads to hearing problems

Scientists know that children of women who smoke during pregnancy can develop hearing-related cognitive deficits. For the first time, researchers believe they have evidence that not only implicates nicotine as the culprit, but also shows what the substance does to the brain to cause these deficits.

In a study using rats, Raju Metherate, associate professor of neurobiology and behavior, and colleagues from UC Irvine, showed that nicotine exposure during the equivalent of a human's third trimester led to hearing-related cognitive problems. This is the first time a study has demonstrated this causal link. Further tests then revealed that the probable cause of the deficits was damage to the receptors in the brain that are sensitive to nicotine, which seems to occur when humans or animals are exposed to the substance during development. The study appears this week in the early online issue of the European Journal of Neuroscience.

Children with auditory processing deficits can have a number of hearing-related problems. They may have difficulty understanding speech in a noisy environment, not understand information that is presented verbally, and may not be able to tell the difference between similar sounds.

"This study is significant because it suggests to us precisely what aspect of smoking is so harmful in pregnancy when it comes to cognitive hearing deficits," Metherate said. "Most women who smoke find it difficult to quit during pregnancy. For them, doctors often prescribe a nicotine patch. While that does protect the fetus from the well-known physical under-development related to harmful chemicals in cigarette smoke, exposure to nicotine appears to be enough to cause serious problems on its own, in terms of brain development."

Chemicals known as neurotransmitters act as message carriers between cells and bind with receptors on the cells' surfaces, much like a key fits into the lock. If the receptors are damaged, they can no longer
'"/>

Source:University of California - Irvine


Page: 1 2 3

Related biology news :

1. Nicotine triggers the same brain reward circuitry as opiates
2. Any exposure to tobacco smoke during pregnancy is risky
3. Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers
4. Prenatal exposure to famine increases risk of schizophrenia
5. Prenatal exposure to marine toxin causes lasting damage
6. Experimental vaccine protects nonhuman primates when given after exposure to Marburg virus
7. Prenatal nicotine exposure reduces breathing response of newborns...
8. Bird brains shrink from exposure to contaminants
9. Vaccine combined with short-term postexposure antibiotics protects monkeys from inhalational anthrax
10. Solvent exposure linked to birth defects in babies of male painters
11. Early exposure to indoor fungus molecules may protect infants against future allergies
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Nicotine exposure during development leads hearing problems

(Date:12/22/2014)... 22, 2014 Research and Markets ... addition of the "The Global Watermarking ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... overview of the global digital media watermarking ... and monitor piracy by securely and invisibly ...
(Date:12/19/2014)... Dec. 18, 2014   LaunchKey , the first ... post-password and Internet of Things era, today announced the ... venture round was led by Metamorphic Ventures with participation ... Partners, VegasTechFund, and others.  LaunchKey has raised $4 million ... expand its team and bring LaunchKey to market in ...
(Date:12/17/2014)... , Dec. 16, 2014 Research and ... the addition of the "Global Chemical Sensor ... http://photos.prnewswire.com/prnh/20130307/600769 ... the increasing demand for medical sensors in biomedical ... data for quick and correct diagnosis during surgical ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... sodium-retaining hormone in African Americans known to potentially cause ... of a study in the September issue of Experimental ... Temple Universitys College of Health Professions. The hormone, ... too much of it can contribute to the development ...
... may hold vital clues about how pancreatic cancer and diabetes ... access journal BMC Medicine, women with a history of gestational ... in life. The research team drawn from the US ... 37,000 mothers who gave birth between 1964 and 1976 in ...
... for our new disease problems, a far more cost ... in the places where they often commingle: in wildlife ... from the Wildlife Conservation Society (WCS) and the United ... issue of the prestigious Journal of Wildlife Diseases. ...
Cached Biology News:Understanding hypertension in African Americans proves elusive 2Emerging (disease) markets 2
(Date:12/22/2014)... Memphis, TENN (PRWEB) December 22, 2014 ... with Donor Egg Bank USA , a network ... the country. Through this partnership, patients have fast access ... for in vitro fertilization, IVF . Fertility Associates of ... to offer this fertility treatment option. , Dr. ...
(Date:12/19/2014)... Charm Sciences is pleased to announce that its ... M1 in raw commingled milk is the first lateral ... peer reviewed report of the validation by Technology and ... Fisheries Research (ILVO-T&V) has been published by the Taylor ... toxic aflatoxin and a known carcinogen, can be passed ...
(Date:12/19/2014)... 19, 2014 Naurex Inc., a biopharmaceutical company ... diseases of the central nervous system, today announced that ... officer, will present at the 33 rd annual ... place at 3:00 p.m. PST on Tuesday, January 13, ... San Francisco, Calif. About ...
(Date:12/19/2014)... 19, 2014 Bina Technologies, Inc. (Bina, ... they have been acquired by Roche (SIX: RO, ROG; ... held company that provides a big data platform for ... data for the academic and translational research markets.  Bina ... will continue to focus on development of their innovative ...
Breaking Biology Technology:Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3Charm Sciences Achieves Independent Validation of First 15 Minute Quantitative Screening Method for Aflatoxin M1 2Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2Bina Technologies is acquired by Roche. 2Bina Technologies is acquired by Roche. 3
... for functional food partners and market entrance, ... Neptune Technologies &,Bioressources Inc. ("Neptune") (NASDAQ.NEPT - ... has been determined to be,safe as a ... for the,commercialization of NKO(R) incorporated into different ...
... after biological olfaction, the challenge has been to generate ... complexity to detect odors in the real world. A ... with exact chemical precision and reproducibility. , In a ... PLoS Biology, Joel White, Mary AtKisson, John Kauer and ...
... /PRNewswire-FirstCall/ - Angiotech Pharmaceuticals,Inc. (NASDAQ: ANPI , TSX: ANP), a ... discussing its,financial results for the fourth quarter and year ended December ... 2008 at 11:00 AM ET (8:00 ... Dial information is as follows: ...
Cached Biology Technology:Neptune Technologies receives GRAS notification in the United States 2Neptune Technologies receives GRAS notification in the United States 3Angiotech Pharmaceuticals, Inc. - Notice of Conference Call and Webcast 2
...
Request Info...
LECHNER AND LaVECK MEDIUMfor the clonal growth of normal human bronchial and other epithelial cells. Requires additives. With glutamine.Recommended storage condition:oC to 8oCIntended use(s):research...
The FliTrx Panning Kit is designed to simplify panning for protein-protein interactions with the FliTrx Random Peptide Display Library or the pFliTrx Peptide Display Vector....
Biology Products: