Polysaccharide Storage Myopathy (PSSM)

Video

What's the Difference between PSSM Types 1 and 2?

June 26, 2014

Dr. Stephanie Valberg explains the differences between these two diseases that cause horses to tie up.... Read More

The Budweiser Clydesdales, which number 170, require custom care.

Article

Keeping the Big Guys Healthy

January 20, 2014

Caring for draft horses involves both physiological and logistical challenges. ... Read More

Proper hay soaking can benefit several different, and sometimes related, equine health conditions. The process can reduce both allergens and nonstructural carbohydrates in forage.

Slideshow

Conditions Helped by Hay Soaking

July 31, 2013

Research shows that soaking hay before feeding can help a variety of equine health conditions.... Read More

Article

Exertional Rhabdomyolysis: Not Just Tying-Up Anymore

February 12, 2013

Researchers have worked tirelessly to better understand the disorder, its causes, and how to best manage it.... Read More

Article

Valberg to be Inducted into Equine Research Hall of Fame

September 16, 2012

Valberg will be the first woman inducted into the Equine Research Hall of Fame.... Read More

Article

Managing Equine Genetic Disorders with Nutrition

June 06, 2012

Managing diet can help alleviate signs of some equine genetic disorders, such as PSSM and HYPP.... Read More

Article

AQHA Offers Genetic Disease Panel Test

February 06, 2012

The test will screen for five potentially fatal genetic diseases often found in Quarter Horses.... Read More

Article

Tying-Up in Thoroughbreds: Narrowing the Genetic Search

December 24, 2010

Researchers suspect tying-up in horses is a heritable condition; however, they have yet to determine the gene--or genes--responsible. But a team of Japanese researchers recently moved the investigation forward with a groundbreaking study of affected ... Read More

Article

What's In Your Horse's DNA?

December 01, 2010

Geneticists have created tools and tests that enhance horse breeders' ability to select for healthy foals.... Read More

Article

Neuromuscular Disease Can Lead to Performance Issues

October 24, 2010

Neuromuscular diseases, which affect the function of muscles and the way they interact with the nervous system, can lead to performance issues, said Kelsey A. Hart, DVM, PhD, Dipl. ACVIM, internal medicine clinician and graduate fellow at the U... Read More

Article

Tying-Up: Current Diagnosis and Nutritional Management

September 22, 2010

Researchers estimate that three of every 100 performance horses will experience signs of tying-up.... Read More

PSSM is a muscle disorder exacerbated by feeding high-NSC diets. Veterinarians and nutritionists currently recommend feeding horses with PSSM a diet containing less than 10% of daily digestible energy supplied by NSC.

Video

Polysaccharide Storage Myopathy

April 14, 2010

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Article

Fatty Acid Triheptanoin Comes Up Short for Horses with PSSM

April 03, 2010

Triheptanoin does not appear to be a good fat supplement for polysaccharide storage myopathy (PSSM) horses.... Read More

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Muscles, Tendons, & Ligaments

January 28, 2010

A horse's motion is achieved from the highly integrated interaction between muscles, tendons, and ligaments.... Read More

Article

Emerging Neurologic Syndromes Discussed at World Equine Vet Meeting

November 27, 2009

"The more we look for neurologic signs, the more we discover new syndromes," said I.G. Joe Mayhew, BVSc, FRCVS, PhD, Dipl ACVIM, ECVN, head of Equine Massey and professor of Equine Studies at Massey University in New Zealand, at the... Read More

Article

Equine Veterinary Group Releases Statement on Genetic Defects in Horses

August 04, 2009

This is the 2009 Statement on Genetic Defects released by the American Association of Equine Practitioners. It was approved in July 2009.
 
Congenital Defects

Congenital defects include all... Read More

Article

PSSM Genetic Mutation Reported in Some UK Horse Breeds

June 18, 2009

Collaborative efforts between researchers on both sides of the Atlantic have identified that a genetic mutation in enzyme glycogen synthase 1 (GYS1) is an important cause of polysaccharide storage myopathy (PSSM, a form of... Read More

Article

Effects of Hay Carbs on PSSM Horses Examined

June 08, 2009

The study group's objectives were to determine if there is a difference in blood glucose and insulin response to feeding hay types with varying water soluble sugar and starch (NSC) content between horses with PSSM and control horses.... Read More

Article

UK Incidence of Polysaccharide Storage Myopathy Reported

May 21, 2009

Not only is polysaccharide storage myopathy (PSSM) a common and important muscular disorder in various horse breeds in the United States, but according to a recent research report, it is also a common diagnosis in horses in the Unite... Read More

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Kester News Hour

March 17, 2009

Top 2008 equine studies include lawsonia, EPM, heart murmurs, etc., at the AAEP Convention.... Read More

Article

Polysaccharide Storage Myopathy (PSSM): A Genetic Diagnosis, AAEP 2008

March 13, 2009

Polysaccharide storage myopathy (PSSM) is a metabolic muscle problem found in at least 20 breeds, including Quarter Horses, Paints, Appaloosas, and drafts. An affected horse suffers bouts of exertional rhabdomyolysis (tying-up), muscle tremors... Read More

Article

Polysaccharide Storage Myopathy (PSSM): Search for Underlying Causes Continues

October 06, 2008

Despite having recently identified a genetic defect that results in polysaccharide storage myopathy (PSSM) in many horses, the underlying cause of PSSM remains to be determined in others.... Read More

Article

Genetic Mutation for Polysaccharide Storage Myopathy Widespread

September 20, 2008

Veterinary researchers from the University of Minnesota have identified a gene potentially responsible for polysaccharide storage myopathy (PSSM) in Quarter Horses and, in doing so, they uncovered a number of research leads to pursue. In a... Read More

Article

Diagnosing Muscle Soreness

June 01, 2008

Q: Last year my 18-year-old Quarter Horse mare became very sensitive to touch on her back and hindquarters. It progressed to a slight hind limb lameness. She would stand with her back feet close together until eventually she would... Read More