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Measurement of cholecystokinin in plasma with reference to nutrition related obesity studies

Publikation: Bidrag til tidsskriftReviewForskningpeer review

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Vis graf over relationer

This review describes the premises for accurate measurement of the gut hormone and satiety factor cholecystokinin (CCK) in circulation. Such a description is useful for nutrition and obesity research in which CCK in its satiety role has evoked considerable interest during the last decades. The background for the review is two sorts of considerations or concerns. First, CCK is a complex peptide system that in several ways challenges plasma measurements because the concentrations in plasma are very low (in the femtomolar to low picomolar range), and the bioactive CCK circulates in different molecular forms (CCK-58, -33, -22, and -8). Furthermore, there are major specificity problems because the structurally similar gastrin hormone circulates in 10- to 20-fold higher concentrations, and in addition, plasma proteins may, due to their high concentration, interfere in an unspecific way with immunoassay measurements. The second concern is that several obesity studies in recent decades have been based on commercial CCK kits with often inadequate documentation of the reliability in plasma measurement. Consequently, many plasma CCK results in today's obesity studies are difficult to compare. Moreover, the use of even fairly reliable commercial CCK kits has recently suffered from sudden discontinuation of the kit production, which has endangered several projects in nutrition and obesity research.

OriginalsprogEngelsk
TidsskriftNutrition Research
Vol/bind76
Sider (fra-til)1-8
Antal sider8
ISSN0271-5317
DOI
StatusUdgivet - apr. 2020

Bibliografisk note

Copyright © 2020 Elsevier Inc. All rights reserved.

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