TY - JOUR
T1 - Pilot Study to Determine Peripheral Blood Leukocyte mRNA Expression Profile of Energy Homeostasis Genes to Identify Potential Predictive Biomarkers of Obesity in Dogs
AU - Arai, Toshiro AU - Li, Gebin AU - Lee, Peter AU - Yamamoto, Ichiro AU - Mori, Nobuko
JO - Journal of Animal and Veterinary Advances
VL - 12
IS - 1
SP - 69
EP - 75
PY - 2013
DA - 2001/08/19
SN - 1680-5593
DO - javaa.2013.69.75
UR - https://makhillpublications.co/view-article.php?doi=javaa.2013.69.75
KW - Dog
KW -obesity
KW -peripheral blood leukocyte
KW -biomarker
KW -mRNA
AB - Peripheral Blood Leukocytes (PBL) continually interact with
virtually every organ and tissue in the whole body. A remarkable concordance
(80%) of gene expression profiles between peripheral blood mononuclear cells
and different tissues has been previously demonstrated in humans. As such, gene
expression responses of circulating PBL can therefore, potentially provide early
warning of any abnormalities they discover. Weight alterations (increase or
decrease) when associated with obesity has been reported to lead to alterations
to PBL gene expression, especially those related to insulin and adiponectin
signaling genes and even genes involved with energy homeostasis. As such, a
pilot study involving PBL profiles of the following genes involved in energy
homoestasis (5 Adenosine Monophosphate-Activated Protein Kinase (AMPK)-α1
and 2, -β1 and 2 and -γ1 and 2); Glucose-6-Phosphate Dehydrogenase
(G6PDH) and Malate Dehydrogenase (MDH), lipogenesis (Fatty Acid Synthase (FAS)
and insulin signaling Adiponectin Receptor (ADIPOR) (-1 and 2); Insulin Receptor
Substrates (IRS) (-1 and 2); Phosphatidylinositol-3 Kinase (PI3-K) were evaluated
between lean and overweight dogs in an attempt to identify possible PBL biomarkers
for assessing obesity in dogs. As compared to lean dogs, overweight dog PBL
demonstrated reduced mRNA expression of IRS-1, IRS-2, FAS, G6PDH and
AMPK β1 genes. Overall, these findings suggest that dysregulation of
energy metabolism, associated with obesity in overweight dogs may carry over
with alterations in PBL gene expression of genes involved in energy homeostasis
and sterol metabolism. As such, PBL gene expression profiles may aid
in early detection of PBL biomarkers for assessing obesity in dogs.
ER -