There are at most 3 documented cases of dogs with growths from
microchip implants. I have found two (years apart) and Dr. Karen
Purcell, DVM refers to a third in her reply to the FHL. That is
among millions of dogs.
Rodents are actually far more closely related to primates including
humans than to dogs, cats, or ferrets. That is one of the reasons that
so many medical studies for human health are done with rodents, and one
of the reasons why humans and rodents share so many zoonotic diseases
compared to our companion animals in Carnivora. Rodent studies on
microchipping are partly an offshoot of ones being chipped for studies
and the reply to the FHL from Dr. Dan McLain goes into that and
clarifies some misleading statements in the microchipping article.
Also, they are done because of those who are considering microchipping
humans for various reasons (military, medical info, etc.).
There is also a bluntly incorrect statement about sarcomas in the
article and an abstract showing it to be wrong is in a reply i sent.
For humans alone it may be valid, but to assume that is true also
from other species is not a valid extension:
>A fibrosarcoma is a type of sarcoma, a malignant tumor of soft
>tissue that connects, supports or surrounds other structures and
>organs of the body. Dr. Timothy Jennings, an expert on implant-
>induced cancers in humans, said he was "not aware of any nosology
>incorporating an entity of 'benign fibrosarcoma'" and agreed that
>"any tumor classified as sarcoma should be viewed as malignant."
See to notice that there ARE benign as well as malignant:
> BEGIN QUOTE
>
>Annu Rev Pathol. 2006;1:435-66.Links
>Genetics of soft tissue tumors.
>
>van de Rijn M, Fletcher JA.
>Department of Pathology, Stanford University Medical Center,
>Stanford, California 94305, USA.
>Sarcomas form a highly diverse group of rare tumors that are
>derived from connective tissue. More than 100 different malignant
>and benign soft tissue neoplasms can be recognized by histologic
>examination. Few diagnostic markers exist, and the cell of origin
>for many soft tissue tumors is unknown. The accurate diagnosis
>of many of these tumors therefore remains a challenge. The study
>of sarcomas has yielded many insights that can be applied to other
>neoplasms such as carcinoma. For example, the success of the
>treatment of gastrointestinal stromal tumor with Imatinib has led to
>an increased effort to find targeted therapies for other malignancies.
>Here we describe the known molecular changes in a number of
>sarcomas and focus on novel scientific approaches that can be
>expected to lead to improved diagnosis, prognostication, and
>therapy of sarcoma.
>PMID: 18039122 [PubMed - in process]
>
>END QUOTED ABSTRACT
See in current FHL:
http://pets.groups.yahoo.com/group/ferrethealth/message/4683
http://pets.groups.yahoo.com/group/ferrethealth/message/4685
http://pets.groups.yahoo.com/group/ferrethealth/message/4686
http://pets.groups.yahoo.com/group/ferrethealth/message/4682
http://pets.groups.yahoo.com/group/ferrethealth/message/4681
Those should help allay exaggerated fears, esp. the ones from experts
such as Dr. Purcell, Dr. Mc Lain, and Dr. Heller.
See in FHL Archives:
http://ferrethealth.org/archive/SG4371
Sukie (not a vet)
Recommended ferret health links:
http://pets.groups.yahoo.com/group/ferrethealth/
http://ferrethealth.org/archive/
http://www.afip.org/ferrets/index.html
http://www.miamiferret.org/fhc/
http://www.ferretcongress.org/
http://www.trifl.org/index.shtml
http://homepage.mac.com/sukie/sukiesferretlinks.html
[Posted in FML 5814]
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