Abstract:
:Food deprivation and adrenalectomy are associated with low concentrations of leptin in blood and the absence of obesity. Because leptin is known to cross the blood-brain barrier (BBB) by a saturable transport system, we examined whether fasting and adrenalectomy (ADX) also act at the BBB. Multiple-time regression analysis showed that fasting, but not ADX, significantly decreased the entry of leptin into mouse brain. After 3 days of food deprivation, the influx of leptin became indistinguishable from that of the vascular control (albumin); 5 h of refeeding significantly reversed this reduced rate of influx. Thus, the results indicate that the BBB provides a dynamic site for the regulation of physiological processes involving leptin.
journal_name
Peptidesjournal_title
Peptidesauthors
Kastin AJ,Akerstrom Vdoi
10.1016/s0196-9781(00)00195-9subject
Has Abstractpub_date
2000-05-01 00:00:00pages
679-82issue
5eissn
0196-9781issn
1873-5169pii
S0196-9781(00)00195-9journal_volume
21pub_type
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