The Claim
Thyroid hormones do not alter the affinity of cardiac beta-adrenergic receptors for dihydroalprenolol or isoproterenol in rats, as the equilibrium dissociation constant (KD) remains unchanged between hyperthyroid and control rats (2–15 nM), indicating that receptor sensitivity to ligands is preserved despite increased receptor numbers.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Even when rats have too much thyroid hormone, their heart receptors still respond to certain chemicals the same way as normal rats—so the sensitivity of those receptors doesn’t change, even if there are more of them.
See the scientific wording
Thyroid hormones do not alter the affinity of cardiac beta-adrenergic receptors for dihydroalprenolol or isoproterenol in rats, as the equilibrium dissociation constant (KD) remained unchanged between hyperthyroid and control rats (2–15 nM), indicating that receptor sensitivity to ligands is preserved despite increased receptor numbers.
What the research says
1 studyStudy: Thyroid hormone regulation of beta-adrenergic receptor number.
The study found that even though thyroid hormones make more heart receptors, those receptors still respond the same way to drugs like isoproterenol — their sensitivity didn’t change, just the number of receptors went up.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.