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The study aims to visualize and compare the receptors for insulin-like growth factors I and II in the rat brain using autoradiography.

October 1, 1988Endocrinology

Receptors for Insulin-like Growth Factors I and II: Autoradiographic Localization in Rat Brain and Comparison to Receptors for Insulin*

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The study aims to visualize and compare the receptors for insulin-like growth factors I and II in the rat brain using autoradiography.
Autoradiography with [125I]IGF-I and [125I]IGF-II
Competitive binding assays with unlabeled IGF-I, IGF-II, and insulin
Densitometric analysis of receptor distribution across brain sections.
Specific binding of [125I]IGF-I was observed across nearly all brain sections, correlating with specific brain structures.
Binding assays showed that [125I]IGF-II was effectively competed by unlabeled IGF-II, confirming receptor identification.
Densitometric analysis allowed for comparative distribution between IGF-I, IGF-II, and insulin receptors.

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Autoradiographic comparison of IGF-I and IGF-II receptors in rat brain reveals distinct binding patterns, suggesting functional localization.

Lesniak et al. (1988) studied this question.

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Autoradiographic comparison of IGF-I and IGF-II receptors in rat brain reveals distinct binding patterns, suggesting functional localization.