Tesamorelin mastery course
Unit 2 of 11

GHRH(1-44) biology and the receptor

Tesamorelin keeps the entire 44-residue sequence of human GHRH, so its receptor pharmacology is identical to the natura…

The full-length hormone, the class B receptor, and one GH pulse

Tesamorelin keeps the entire 44-residue sequence of human GHRH, so its receptor pharmacology is identical to the natural hormone. What changes is only how long it survives in blood, not what it does at the pituitary.

This unit maps the axis across the body, explains why the GHRH receptor is a class B GPCR that speaks in cAMP, and shows why tesamorelin can only work where the pituitary and its receptor are intact.

Key terms

The axis, across the body


The full 44 residues, not a fragment


What kind of receptor this is


From binding to a burst of cAMP


When the axis cannot respond