Fasting, but not adrenalectomy, reduces transport of leptin into the brain.

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

Peptides

journal_title

Peptides

authors

Kastin AJ,Akerstrom V

doi

10.1016/s0196-9781(00)00195-9

subject

Has Abstract

pub_date

2000-05-01 00:00:00

pages

679-82

issue

5

eissn

0196-9781

issn

1873-5169

pii

S0196-9781(00)00195-9

journal_volume

21

pub_type

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