Navigation Links
Butter flavoring in microwave popcorn, thought safe for food industry workers, is respiratory hazard
Date:8/13/2012

Philadelphia, PA, August 13, 2012 The ingredient 2,3-pentanedione (PD), used to impart the flavor and aroma of butter in microwave popcorn, is a respiratory hazard that can also alter gene expression in the brain of rats. Manufacturers started using PD when another butter flavoring, diacetyl, was found to cause bronchiolitis obliterans, a life-threatening and nonreversible lung disease in workers who inhaled the substance. New research on PD with implications for "popcorn workers' lung" is published in The American Journal of Pathology and indicates that acute PD exposure has respiratory toxicity which is comparable to diacetyl in laboratory animals.

"Our study demonstrates that PD, like diacetyl, damages airway epithelium in laboratory studies. This finding is important because the damage is believed to be the underlying cause of bronchiolitis obliterans," says lead investigator Ann F. Hubbs, DVM, PhD, DACVP, Health Effects Laboratory Division of the National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV. "Our study also supports established recommendations that flavorings should be substituted only when there is evidence that the substitute is less toxic than the agent it replaces."

The study included groups of rats exposed for six hours to different concentrations of PD, a comparable concentration of diacetyl, or filtered air. Since the investigators observed signs of delayed toxicity, they exposed additional rats to PD, and further microscopically examined the brains, lungs, and nasal tissues from these rats 0-2 hours, 12-14 hours, and 18-20 hours after exposure. investigators then evaluated changes in gene expression in discrete brain regions.

The investigators found respiratory epithelial injury in the upper nose, comparable to that caused by diacetyl that progressed through 12 to 14 hours post-exposure. They also found that PD exposure caused necrosis and apoptosis in the olfactory neuroepithelium and activation of caspase 3, a protein that plays a role in cell death, in axons of olfactory nerve bundles. Signs consistent with neurotoxicity included increased expression of the inflammatory mediators, interleukin-6 and nitric oxide synthase-2, as well as decreased expression of vascular endothelial growth factor A in the olfactory bulb, striatum, hippocampus, and cerebellum.

"Our study is a reminder that a chemical with a long history of being eaten without any evidence of toxicity can still be an agent with respiratory toxicity when appropriate studies are conducted," says Dr. Hubbs. "It suggests several intriguing potential mechanisms for the toxicity of inhaled volatile α-diketones, reveals mRNA changes in the brain, documents olfactory neurotoxicity, and clearly demonstrates that the remarkable airway toxicity of diacetyl is shared with its close structural relative, PD."


'/>"/>

Contact: David Sampson
ajpmedia@elsevier.com
215-239-3171
Elsevier Health Sciences
Source:Eurekalert

Related medicine news :

1. Chronic Butter Flavoring Exposure Linked to Harmful Brain Process
2. Artificial butter flavoring ingredient linked to key Alzheimers disease process
3. Parents Spank, Slap Kids in Public More Often Than Thought
4. GW Researcher finds depressive symptoms and suicidal thoughts in former finasteride users
5. HIV suppression not as good as previously thought, largest study of viral-load blood tests show
6. Rate of severe reactions higher than thought in young children with food allergies
7. Mayo Clinic: Molecule thought cancer foe actually helps thyroid tumors grow
8. Dinosaurs May Have Been More Svelte Than Thought
9. HIV superinfection in Uganda may be more common than previously thought, study finds
10. Hepatitis B Infection Rates in U.S. Higher Than Thought
11. Cancer may require simpler genetic mutations than previously thought
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... ... 2017 , ... As the standards bearer of advanced cancer ... positions them as the go-to thought leader in all matters concerning oncology nursing. ... always-on, always-fresh news, views and advocacy engine, called ONS Voice. , The ONS ...
(Date:3/24/2017)... Westchester County, NY (PRWEB) , ... March 24, 2017 , ... ... in Somers and White Plains, N.Y., is pleased to announce Westchester resident Lauren C. ... as a law clerk for the firm, will concentrate her practice in elder law, ...
(Date:3/24/2017)... ... 24, 2017 , ... Empower Brokerage, located in Southlake, Texas, ... programs. , In February, 2017, Empower Brokerage introduced their new “Performance Partners” program ... to teach how to maximize their sales efforts, as well as how to ...
(Date:3/24/2017)... ... ... Time GPS”: a dauntless and enlightened study of the second-coming of Christ, and ... published author, Wesley Gerboth, a World War II veteran, with a highly-regarded reputation as ... ninety-one, he shares the Wisdom God bestowed upon him in this publication. , ...
(Date:3/24/2017)... , ... March 24, 2017 , ... “The Adventures of ... smart and silly dog who lives his life to the fullest, as God intended. ... published author Patti Holmgren, a mother and grandmother pursuing her passion for writing, especially ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... , March 24, 2017 A ReportsnReports.com report ... been growing rapidly as the global sales of Adcetris and Kadcyla ... in the antibody drug conjugates market is driven by large number ... and wider therapeutic window offered by ADCs. ... Browse 3 Tables and 94 Figures, 10 ...
(Date:3/24/2017)...  GenomeDx Biosciences today announced that six abstracts featuring ... Cancer Classifier tests will be presented at the 32 ... held March 24 to 28, 2017 in ... Europe,s largest urological event showcasing ... field. The abstract titled "Muscle invasive bladder ...
(Date:3/24/2017)... 2017  Provectus Biopharmaceuticals, Inc. (OTCQB: PVCT, ... oncology and dermatology biopharmaceutical company, today disclosed terms ... Sheet (the "Definitive Financing") it entered into on ... stockholders, who are referred to in the Definitive ... filed with the Securities and Exchange Commission.   ...
Breaking Medicine Technology: