Navigation Links
Brain's Olfactory Bulb Grows With Sense of Smell

Finding could lead to better treatment when problems occur

THURSDAY, June 19 (HealthDay News) -- The olfactory bulb in the brain -- the brain's "smell center" -- may change in size as a person's sense of smell changes, a German study reports.

In this study, researchers at the University of Dresden Medical School studied 20 people with loss of sense of smell. At the start of the study, the patients underwent an assessment that included MRI of the brain and nasal endoscopy, an examination of the inside of the nose using a flexible instrument called an endoscope. Their ability to detect odors, discriminate between odors and identify particular odors was also tested. The full assessment was repeated 13 to 19 months later.

At the first assessment, seven of the 20 patients had no sense of smell (anosmia) and 13 had a reduced sense of smell (hyposmia). At the second assessment, six had anosmia and 14 had hyposmia, the study found.

In patients who initially had hyposmia, the volume of the olfactory bulb increased as the patients' sense of smell increased. But there was no correlation between the volume of the olfactory bulb and the ability to distinguish between or identify specific odors.

The study was published in the June issue of the journal Archives of Otolaryngology -- Head & Neck Surgery.

"The correlation between olfactory bulb volume and olfactory function may potentially be used in combination with other factors influencing olfaction such as remaining olfactory function, age and duration of olfactory loss as a means to provide patients with individual information on the prognosis of their disease," the study authors wrote.

"Hypothetically, a multifactorial approach could be applied to eventually come up with a formula that would allow a more precise prognosis of olfactory function. Especially since therapeutic options in patients with olfactory loss are limited, at present, this type of information is of high clinical significance."

More information

The U.S. National Institute on Deafness and Other Communication Disorders has more about smell disorders.

-- Robert Preidt

SOURCE: JAMA/Archives journals, news release, June 16, 2008

Copyright©2008 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Gay Men, Straight Women Have Similar Brains
2. Cooling May Not Help Injured Brains in Children
3. New stem cell therapy may aid the repair of damaged brains
4. Sleep-Deprived Brains Show Lapse in Visual Processing
5. Analysis of alcoholics brains suggests treatment target
6. Yeast gives rise to new concept: cell fuel is brains behind division
7. AgeLab Director Brings Wisdom to Aging Brains
8. Are teenage brains really different?
9. Which came first, social dominance or big brains? Wasps may tell
10. Chicago neuroscientist contributes to book on brains and baseball
11. Aging Brains Get Out of Sync
Post Your Comments:
(Date:11/25/2015)... ... November 25, 2015 , ... "When I underwent ... bras were incredibly uncomfortable," said an inventor from Bronx, N.Y. "In order to ... the patent-pending RECOVERY BRA for added comfort and support. The bra is easier ...
(Date:11/25/2015)... ... November 25, 2015 , ... Bcureful—a non-profit organization devoted to ... raising public awareness of the disorder while helping to bring expert medical care ... to bolster progress at the Tuberous Sclerosis Complex Center at Ann & Robert ...
(Date:11/24/2015)... Florida (PRWEB) , ... November 25, 2015 , ... ... planning and monitoring. Their Care Plan software creates an agreement between the ... patient care plan, including financial, scheduling, monitoring, notification, and projections. Click ...
(Date:11/24/2015)... ... November 24, 2015 , ... Young patients with a ... Dr. Angela Wolfman and Dr. Kedar S. Lele, who are pediatric dentists in ... and fillings, the WaterLase iPlus 2.0™ system causes minimal discomfort and bleeding to the ...
(Date:11/24/2015)... ... November 25, 2015 , ... ... solutions for drugs, biologics, consumer health and global clinical supply services, today announced ... upcoming Clinical Trial Supply East Asia Conference, to be held at the InterContinental ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... Nov. 24, 2015  Thanks to a donor with ... Mary,s Medical Center,s Sister Diane Grassilli Center for Women,s ... in San Francisco . ... stepped forward with a gift of $617,320 that allowed ... Mammography with Tomosynthesis and Whole Breast Ultrasound. Tomosynthesis, three-dimensional ...
(Date:11/24/2015)... 24, 2015  Array BioPharma Inc. (Nasdaq: ... Officer, Ron Squarer , will present at ... York.  The public is welcome to participate in ... BioPharma website.Event:Piper Jaffray Annual Healthcare ConferencePresenter:  , Ron ... 2015Time:1:30 p.m. Eastern Time Webcast: , ...
(Date:11/24/2015)... and VANCOUVER, Nov. 24, 2015 /PRNewswire/ - ESSA ... EPIX ) announced today that the first patient ... of EPI-506 as a treatment for metastatic castration-resistant prostate ... and Canada.  --> the ... In the Phase 1/2 clinical trial, ESSA intends ...
Breaking Medicine Technology: