HOME >> BIOLOGY >> NEWS
Same-sex mating by fungi spawned infection outbreak, evidence suggests

DURHAM, N.C. Same-sex mating between two less harmful yeast strains might have spawned an outbreak of disease among otherwise healthy people and animals on Vancouver Island, British Columbia, Howard Hughes Medical Institute geneticists at Duke University Medical Center have reported. The fungus, Cryptococcus gattii, is normally restricted to the tropics and subtropics.

The researchers said their findings provide important additional insight into the origin of the Vancouver Island outbreak, which began in 1999. Moreover, the evidence that sex played an important role in the pathogen's expansion may provide a useful model for the evolution of infectious diseases and parasites more generally, they said.

The team reported its findings October 9, 2005, in an advanced online publication of Nature. The work was supported by the National Institute of Allergy and Infectious Disease.

After extensive genetic analysis of fungal samples, the researchers suggest that mating between two less harmful fungal strains of the same sex or "mating type" produced the more virulent form. That strain has now taken hold and appears to be spreading -- perhaps driven by unique conditions in the Vancouver area, they said.

"While the number of people infected so far does not approach that of many other infectious diseases, this fungus is invading the central nervous systems of people who have no other apparent risk factors except having taken a walk in the park on Vancouver Island," said Joseph Heitman, M.D., Ph.D. "A year after infection, some of these people still have not fully recovered.

"The fungus appears to have become entrenched in the Vancouver Island area," he added. "It is unlikely to disappear, and all indications are that it is spreading. Our findings suggest that sex played a role in the expanded geographic range for this pathogen."

Since it was first documented in 1999, C. gattii has infected at least 100 people on Vancouver Island
'"/>

Contact: Kendall Morgan
kendall.morgan@duke.edu
919-660-1306
Duke University Medical Center
9-Oct-2005


Page: 1 2 3 4

Related biology news :

1. Same-sex mating discovered in a toxic fungus
2. Common fungicide causes long-term changes in mating behavior
3. Microfluidic chip helps solve cellular mating puzzle
4. Male chimpanzees prefer mating with old females
5. New research reveals unexpected post-mating gene expression in model lab insect
6. New study examines how sense of smell affects mating and aggression in mice
7. Study in Royal Society journal on link between creativity and mating success
8. Sperm trading can resolve hermaphrodite mating conflicts
9. Divergent mating systems and parental conflict as a barrier to hybridization in flowering plants
10. Weapon performance determines mating success in the collared lizard
11. New study explores the evolution of male parental care and female multiple mating

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/28/2020)... ANTONIO (PRWEB) , ... January 28, 2020 , ... ... Airrosti ’s methods improve care efficiency, reduce total cost of care, and limit ... Airrosti, a large healthcare provider group headquartered in San Antonio, Texas specializes in ...
(Date:1/24/2020)... FARMINGTON, Conn. (PRWEB) , ... January 24, 2020 , ... ... populations down to the strain level, today announced that the company will debut a ... place January 26-29. , The new product, Shoreline Biome's Rapid Prep kit, is ...
(Date:1/23/2020)... ... 2020 , ... GIOSTAR/HEAMGEN has developed and secured ... The red blood cells are made utilizing a bioreactor that permits the production ... replaces the need for a human blood donor. GIOSTAR/HEAMGEN mature red ...
Breaking Biology News(10 mins):
(Date:1/28/2020)... ... January 28, 2020 , ... ... the exclusive distributor to food and beverage manufactures within North America. Both Lifecycle ... suppliers. This agreement will allow each company to pool their collective resources and ...
(Date:1/24/2020)... ... January 24, 2020 , ... The plastic and reconstructive surgeons ... in New Jersey epitomize the notion that plastic surgery is much more than just ... popular media. , Over the last 20 years NJ Top Docs, Dr. Andrew Elkwood, ...
(Date:1/22/2020)... ... January 21, 2020 , ... Microbial Discovery Group ... Midwest Region Industrial and Institutional (I&I) Account Manager. Darrell will focus on servicing ... Darrell brings over 30 years of sales experience working across multiple different market ...
(Date:1/10/2020)... PISCATAWAY, N.J. (PRWEB) , ... January 09, 2020 ... ... companies in China, today announced its inaugural GenScript Biotech Global Forum on Jan. ... Forum, exploring the theme "Cell and Gene Therapy and the Booming China Market," ...
Breaking Biology Technology:
Cached News: