L68: Endocrinology Basics (part 1) Flashcards
Cretinism etiology?
Congenital
Congenital adrenal hyperplasia etiology?
Genetic
Etiology of Sheehan’s?
Trauma/stress (in problem set)
Etiology of Thyroidectomy?
surgical
Etiology of glucocorticoid therapy?
Therapeutic
Etiology of DM1
Autoimmune
Etiology of endocrine disruptors
environmental
What type of hormones need to be bound to proteins in blood
lipophilic
Does IGF-1 need a binding protein?
Yes
Does GH need a binding protein?
Yes
Does T4/T3 need a binding protein?
Yes. Thyroid binding globulin (TBG) and transthyretin (TTR)
Does dopamine need a binding protein?
No, it’s a peptide
Does insulin need a binding protein?
No, it’s a protein
Does cortisol/corticosterone need a binding protein?
Yes; corticotropin binding globulin (CBG)
Does estrogen and testosterone need a binding protein?
Yes; SHBG
Name a non-specific hormone binding protein
Albumin
Can a hormone-BP complex enter into a cell?
Yes, through megalin.
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Affinity vs. specificity
Affinity is measured by Kd
Specificity is measured by Ki
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What kind of receptor does GH bind
Receptor linked kinase
What kind of receptor does prolactin bind
receptor-linked kinase
What kind of receptor does EPO bind?
Receptor linked kinase
What kind of receptor does insulin bind?
Receptor kinase
What kind of receptor does ANP bind
receptor kinase
What kind of receptor does TH bind?
intracellular receptor