Normal kidneys reabsorb the Amino Acid cystine so that only small amounts pass into the urine,
while dogs with mutations of both copies of the SLC3A1 gene fail to reabsorb cystine allowing large amounts to pass into the urine, hence the name cystinuria.
Not exact matches
All
dogs with AHE were homozygous for this
mutation, 15/41 healthy AH control
dogs were heterozygous carriers
while 26/41 normal healthy AH
dogs were wild type.
Washington State U. Vet School says, re ivermectin: «
While the dose of ivermectin used to prevent heartworm infection (6 micrograms per kilogram) is safe in
dogs with the [MDR1]
mutation, higher doses such as those used for treating mange (300 - 600 micrograms per kilogram)[are not].»
These conditions are inherited as X chromosome linked disorders, meaning only male
dogs can become affected
with the disease,
while female
dogs, though not clinically affected, can carry the
mutation and pass it on to their young.
While this
mutation is not, in and of itself, a reason not to breed a
dog — even a
dog with two copies — the presence of the MDR1
mutation should be viewed as a fault and, over the long term, breeders should work toward reducing the its frequency in the breed.