CHRONIC ACTIVE HEPATITIS
Chronic Active Hepatitus (CAH) is
suspected in the presence of
persistently elevated ALT values,
definitively diagnosed by liver biopsy.
The incidence of occurence tends to
be high in Doberman Pinschers,
but it is also found in other breeds, most notably, Bedlington Terriers,
and Golden Retrievers.
It is viewed as being a progressive inflammatory state that causes
the liver to degenerate to the point
of liver failure and death.
We do not have a standard treatment,
nor do we know the definitive cause.
There are no studies that prove
CAH is heritable. .Low fat, low protein diets can help, and some have used steroids
with a degree of success.
The steroids were originally given when researchers thought this
was an autoimmue disease, because humans do have a form of
autoimmune CAH, with similar histology results on biopsy.
However, leading researchers in the field no longer view CAH as an
autoimmune disease in the canine.
According to current research, there is usually a elevated level of
copper found early on in the liver, but this seems to be a result of the disease,
and not the cause. Removal of the copper does not cure CAH, but
in the early stages copper chelation therapy may slow the progress
of CAH.
During CAH, as the liver cells die, and they release a protein that
causes the elevated ALT values. Scar tissue then replaces the dead
liver cells. This effects the blood vessels that exit the liver. This is
important because the liver is a major filtering organ for the body.
Symptoms usually show when at least half of the liver has
been destroyed. The dog is usually sick by that
point in time, and demonstrating the following clinical signs of CAH:
vomiting, diarrhea, jaundice (yellow tinge to skin and whites of eyes),
weight loss, and fluid accumulation in the abdomen (ascites).Genetic
For more info on Chronic Active Hepatitis and liver disease in Dobermans, go to:
Chronic Active Hepatitis in the Doberman
Portosystemic Shunts in Dogs
submitted by
Suzanne McDonald
DPCA Public Education Committee
