Abstract:
:Studies have demonstrated that heat shock is associated with alteration in energy metabolism. In this study, we investigated the effect of heat shock on gene expression and secretion of adiponectin and leptin, and gene expression of Hspa2 and Ppargamma in 3T3-L1 adipocytes. Compared with 37 degrees C, adiponectin mRNA was higher at 39 degrees C, and lower at 41 degrees C. Leptin mRNA was higher when adipocytes were exposed to 41 degrees C compared with 37 and 39 degrees C. Secretion of adiponectin increased at 39 degrees C, and when cells were exposed to 41 degrees C it was not detectable. Leptin secretion increased significantly at 41 degrees C, compared with 37 and 39 degrees C. Hspa2 mRNA was increased at 39 degrees C, and the highest level was reached at 41 degrees C. Ppargamma mRNA exhibited a substantial increase in a temperature-dependent manner. The study provides the first evidence of a possible direct effect of heat shock on adiponectin and leptin gene expression and secretion, and demonstrates that the expression of the two adipokines is differentially regulated at the temperatures tested.
journal_name
J Mol Endocrinoljournal_title
Journal of molecular endocrinologyauthors
Bernabucci U,Basiricò L,Morera P,Lacetera N,Ronchi B,Nardone Adoi
10.1677/JME-08-0068subject
Has Abstractpub_date
2009-02-01 00:00:00pages
139-47issue
2eissn
0952-5041issn
1479-6813pii
JME-08-0068journal_volume
42pub_type
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