Tag archives: abnormal bleeding

One of the goals at Paw Print Genetics (PPG) is to add to our large menu of tests whenever we can. New genetic changes found in the dog genome for diseases and traits are published periodically in the medical literature. These publications guide us in developing new tests for our customers.

Among the new tests launched this month are three tests for traits. Two of the tests will identify whether a dog carries for polydactyly, which results in having hind dewclaws. One of the polydactyly variants in the LMBR1 gene will cause hind dewclaws in many different breeds, while the mutation in ALX4 only causes polydactyly in the Great Pyrenees. Both variants are dominant, meaning that one or two copies will result in polydactyly. Interestingly, the mutation for the Great Pyrenees causes double dewclaws, whereas the mutation in LMBR1 causes just single dewclaws.

The third trait launched is for another E locus variant. PPG offers several E locus variants, so it is important to read the description of each before choosing your test. Most breeds will produce a yellow or red coat color when there are two copies of the ‘e’ allele from the common E locus variant.  However ...

Since the first exhibitions of the modern basset hound in the late 19^th century, their mellow and charming personality has made them a popular family dog. Though according to the Basset Hound Club of America, it is not unusual for a basset hound to be a little stubborn or to have “selective hearing” (especially if following a scent trail), this minor annoyance is easily tempered by their affectionate and sensitive disposition. Originally bred for hunting with a person on foot, the basset hound’s short legs kept them from outrunning their handler while following their exceptional nose. Unfortunately, like other purebred dogs, the basset hound has also been unable to outrun susceptibility to certain inherited diseases. One such condition is a disease of blood platelets known as thrombopathia that occurs due to a mutation in the RASGRP1 gene.

Dogs affected with thrombopathia produce a dysfunctional form of a protein important in the aggregation of platelets during blood clotting. The resulting inability to produce functional blood clots leads to easy bruising and frequent episodes of spontaneous bleeding from the gums, nose, and the gastrointestinal tract. Affected dogs may also show signs of lameness due to spontaneous bleeding in joints. Loss of ...

In my years as an undergraduate college student, struggling to make ends meet, I lived next door to a woman with an old, Labrador mix named Bubba.  By initial impression, he seemed to be a very normal, happy and well-socialized dog.  However, one day, during my daily greeting from Bubba, I noticed some blood around his mouth.  At the time, I was a biology major trying to wade through prerequisites for admission to veterinary school and I hadn’t yet been exposed to the world of clinical veterinary medicine.  So, when I saw the blood around Bubba’s mouth, I didn’t pay much attention.  I had seen blood in my own dog’s mouth on occasion after chewing on a toy or a bone and it never amounted to much.  So, my uninformed mind had little to worry itself about.  I later learned from Bubba’s owner that he had bled like this since he was young.  However, the owner had never taken Bubba to a veterinarian for a diagnosis and to this day I still don’t know what was wrong with him.  Though the memory of Bubba had ...