A study reported in the November 4 issue of the Journal of Clinical Investigation (JCI) by Felix Kreier and colleagues from the Netherlands Institute for Brain Research in Amsterdam revealed, for the first time, that PSNS innervation of fatty tissue does indeed occur. The authors removed nerves from the sympathetic branch of the nervous system of rats and injected multiple abdominal fat compartments with molecular tagged pseudorabies virus. The replication of viral particles resulted in infections occurring only along the chain of functionally–connected neurons of the PSNS from the fatty tissue to the brain. "Before this work, there was little or no evidence for the PSNS innervation of white adipose tissue" noted Timothy Bartness from the Department of Biology and Center for Behavioral Neuroscience at Georgia State University, Atlanta, in his accompanying Commentary in the JCI. The authors also demonstrated that individual neurons are specialized to control one fat compartment. Dr. Bartness writes further "this could result in enhanced regional accumulation of lipid with certain pathologies. This expansion of the adipose organ in these areas could lead to several well-known adverse health consequences of enhanced visceral/abdominal adiposity such as type II diabetes, certain cancers and high blood pressure." However more work is necessary to reveal whether the nerves described participate in naturally-occurring lipid accumulation, or alternatively are associated with disease-related obesity states.
CONTACT:
Felix Kreier / Ruud M. Buijs
Netherlands Institute for Brain Research
Meibergdreef 33
1105 AZ Amsterdam ZO
Netherlands
PHONE: 31-20-5665500
FAX: 31-20-6961006
E-mail: f.kreier@nih.knaw.nl
View the PDF of this article at: http://www.jci.org/cgi/content/full/110/9/1243
ACCOMPANYING COMMENTARY:
Dual innervation of white adipose tissue: some evidence for parasympathetic
nervous system involvement
CONTACT:
Timothy J. Bartness
Department of Biology, MSC 8L0389
Georgia State University
33 Gilmer Street SE, Unit 8
Atlanta, Georgia 30303-3088
USA
PHONE: 404-651-266
FAX: 404-651-2509
E-mail: bartness@gsu.edu
Journal
Journal of Clinical Investigation