Table 1.

List of compounds and their structures used in this study

Compound	Structure
Eu-NDP-α-MSH	1 Eu-(DTPA)-Ser-Tyr-Ser-Nle-Glu-His-DPhe-Arg-Trp-Gly-Lys-Pro- Val-NH2
Eu-DPLCE	H-Tyr-c[DPen-Gly-Phe-Cys]-Phe-Lys(Eu-(DTPA))-NH2
Eu-CCK8	Eu-(DTPA)-Asp-Tyr-Nle-Gly-Trp-Nle-Asp-Phe-NH2
Delt II-[PG]15-MSH7	2 H-Deltorphin II-[Pro-Gly]15-MSH7-NH2
MSH7-Pego-[PG]6-Pego- CCK6	3 Ac-MSH7-PEGO-[Pro-Gly]6-PEGO-CCK6-NH2
MSH7-Pego-[PG]3-K(Cy5)- Pego-CCK6	Ac-MSH7-PEGO-[Pro-Gly]3-Lys(Cy5)-PEGO-CCK6-NH2

¹Eu-(DTPA)

²Deltorphin II          MSH7

Tyr-DAla-Phe-Glu-Val-Val-Gly   Ser-Nle-Glu-His-DPhe-Arg-Trp

³PEGO

CCK6

Nle-Gly-Trp-Nle-Asp-Phe