Navigation Links
Scientists discover new type of virus responsible for a devastating disease in snakes
Date:8/13/2012

A mysterious condition called Inclusion Body Disease (IBD) strikes captive boa constrictors and pythons, causing bizarre behavioral changes and eventually death. Scientists investigating an outbreak of IBD among snakes at the Steinhart Aquarium in San Francisco report they may well have found a virus that is responsible for this common but deadly disease, a discovery that could eventually lead to prevention and treatment options. The study appears in the August 14 issue of mBio, the online open-access journal of the American Society for Microbiology. The authors report that the virus represents a whole new class of arenaviruses scientists have never seen before.

Among captive boas, IBD is the most commonly diagnosed disease that is thought to be caused by a virus. Snakes that have contracted IBD may initially regurgitate food, but they eventually show dramatic neurological problems, says Michael Buchmeier, a professor of infectious diseases at the University of California, Irvine. Neurological signs include "stargazing," in which the snake stares upwards for long periods of time.

"Some of the symptoms are pretty bizarre - this stargazing behavior, looking like they're drunk, they tie themselves in a knot and they can't get out of it," says Buchmeier. The condition, which is named for the inclusions, or pockets of foreign material, found inside the cells of affected animals, is ultimately fatal. IBD is devastating for large aquariums, as it can infect a large number of snakes before it is identified and quarantine measures can be put in place. Since there is currently no treatment for the disease, infected snakes must be euthanized to prevent them from infecting other animals.

When the disease recently struck a number of boas and pythons at the Steinhart Aquarium at the California Academy of Sciences, the aquarium requested help from scientists at the University of California San Francisco who specialize in discovering novel viruses.

The researchers extracted DNA from tissue samples taken from boas and pythons diagnosed with IBD, and used rapid, high-throughput techniques to learn the sequence of those strands of DNA. In amongst all the snake DNA sequences there were sequences of DNA that clearly belonged to viruses - viruses that are members of the arenavirus family. The authors were later able to grow and isolate one of those viruses using snake tissues cultured in the laboratory.

While it is an important development from a practical standpoint, since identifying the causative agent for a disease is the first step in developing treatments, vaccines, diagnostics, and prevention policies it is also an incredible discovery for virology: the virus belongs to a group of viruses no one knew existed.

"This is one of the most exciting things that has happened to us in virology in a very long time. The fact that we have apparently identified a whole new lineage of arenaviruses that may predate the New and Old world is very exciting," says Buchmeier.

According to Buchmeier, this new isolate doesn't fall neatly into either of the two known categories of arenaviruses, Old World arenaviruses and New World arenaviruses. The fact that the virus was found in snakes adds another surprise twist, since up until now arenaviruses had only ever been found in mammals.

Metagenomic techniques that examine large samples of DNA for small bits of information, like the approach used in the study, are extremely powerful for identifying new viruses, Buchmeier says.

"Twenty years ago we would have called this a fishing expedition. It is fishing, but the techniques are so good and so sensitive that they allow us to determine which new types are there," says Buchmeier.


'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Related biology news :

1. Stanford scientists develop gene therapy approach to grow blood vessels in ischemic limbs
2. Queens scientists seek vaccine for Pseudomonas infection
3. Scientists produce eye structures from human blood-derived stem cells
4. American Society of Plant Biologists honors early career women scientists
5. Brandeis scientists win prestigious prize for circadian rhythms research
6. Scientists discover new method of proton transfer
7. Salk scientists open new window into how cancers override cellular growth controls
8. WileyChina.com - Now Featuring Bespoke Pages for China’s Life Scientists
9. Scientists win $2 million to study new pathway in development and maintenance of lymphoma
10. UGA scientists reveal genetic mutation depicted in van Goghs sunflower paintings
11. Genetic mutation depicted in van Goghs sunflower paintings revealed by scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
(Date:4/4/2017)... NEW YORK , April 4, 2017   ... solutions, today announced that the United States Patent and ... The patent broadly covers the linking of an iris ... the same transaction) and represents the company,s 45 th ... our latest patent is very timely given the multi-modal ...
(Date:3/29/2017)... March 29, 2017  higi, the health IT company ... North America , today announced a Series ... acquisition of EveryMove. The new investment and acquisition accelerates ... tools to transform population health activities through the collection ... higi collects and secures data today on ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... ... June 22, 2017 , ... For the months of ... a Spotlight series on “Cell Therapy Regulation” for its regenerative medicine ... on the unique regulatory challenges of stem cell medical research. , Stem cell ...
(Date:6/20/2017)... Rocky Hill, CT (PRWEB) , ... June 20, ... ... entrepreneurial support, today announced that the CTNext board of directors has formed a ... developed by a working group composed of institution presidents and other high-ranking representatives ...
(Date:6/20/2017)... ... ... Do More with OHAUS , With the launch of the new laboratory ... industry, to extending its expertise across the entire laboratory to a range of life ... allowing for its customers to 'Do More' in the lab. , Efficiency and ...
(Date:6/19/2017)... ... June 19, 2017 , ... A colony of healthy honey bees ... tissues by delivering pollen and nectar containing nutrients necessary for growth and survival. Better ... , Many recent indicators point to a decline in honey bee health. Sick and ...
Breaking Biology Technology: