Abstract:
:Obesity, a rising public health burden, is a multifactorial disease with an increased risk for patients to develop several pathological conditions including type 2 diabetes mellitus, hypertension, and cardiovascular disease. Increasing evidence suggests a relationship between the human brain-derived neurotrophic factor (BDNF) Val66Met single-nucleotide polymorphism (SNP) and obesity, although the underlying mechanisms of this connection are still not completely understood. In the present study, we found that homozygous knock-in BDNFMet/Met mice were overweight and hyperphagic compared to wildtype BDNFVal/Val mice. Increased food intake was associated with reduction of total BDNF and BDNF1, BDNF4 and BDNF6 transcripts in the hypothalamus of BDNFMet/Met mice. In contrast, in the white adipose tissue total BDNF and Glut4 expression levels were augmented, while sirtuin 1 and leptin receptor (Ob-R) expression levels were reduced in BDNFMet/Met mice. Moreover, plasmatic leptin levels were decreased in BDNFMet/Met mice. However, BDNFVal/Val and BDNFMet/Met mice showed a similar response to the insulin tolerance test and glucose tolerance test. Altogether, these results suggest that BDNF Val66Met SNP strongly contributes to adipose tissue pathophysiology, resulting in reduced circulating leptin levels and hypothalamic expression of BDNF, which, in turn, promote increased food intake and overweight in BDNFMet/Met mice.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Ieraci A,Barbieri SS,Macchi C,Amadio P,Sandrini L,Magni P,Popoli M,Ruscica Mdoi
10.1002/jcp.29778subject
Has Abstractpub_date
2020-12-01 00:00:00pages
9667-9675issue
12eissn
0021-9541issn
1097-4652journal_volume
235pub_type
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