Polysaccharide Storage Myopathy (PSSM)

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

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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

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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

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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

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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

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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

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

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

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

Article

Muscle Disorders in Warmbloods Easily Diagnosed through Biopsy

April 16, 2008

Owners of Warmbloods with debilitating--or sometimes just plain baffling--muscle disorders can get useful and reliable answers about their horses' conditions through a relatively simple muscle biopsy. So say University of Minnesota researchers,... Read More

Article

Polysaccharide Storage Myopathy: Blame It on the Genes

April 11, 2008

A genetic mutation in an enzyme called muscle glycogen synthase might be responsible for polysaccharide storage myopathy (PSSM)--a debilitating and life-threatening disease in horses characterized by abnormally high glycogen (the storage form of... Read More

Article

2007 Morris Animal Foundation Equine Research Wrap-Up

December 14, 2007

The results of equine research funded by the Morris Animal Foundation (MAF) in 2007 added to scientists' understanding of foal pneumonia, hereditary muscle disorders, laminitis, and pharmacology.

Read More

Article

New Research on PSSM Prevalence, Heritability in Progress

October 04, 2007

Researchers with the University of Minnesota have identified polysaccharide storage myopathy (PSSM) in 6-12% of overtly healthy Quarter Horses on six farms involved in a new study. They also said the disease could be more common within certain... Read More

Article

Morris Animal Foundation Funding 11 Equine Studies in 2008

September 25, 2007

In 2008, the Morris Animal Foundation (MAF) will fund about 120 animal health studies, including 11 new and continuing studies for horses. Equine enthusiasts are invited to sponsor or co-sponsor one of these studies with a total gift of $3,000 o... Read More

Article

Polysaccharide Storage Myopathy

July 09, 2007

Stephanie Valberg, DVM, PhD, professor of large animal medicine and director of the University of Minnesota's Equine Center discussed PSSM at the AAEP Convention 2006. The disorder causes muscle pain, stiffness, and cramping, and some horses... Read More