OBJECTIVE: The objective of this study was to compare various parameters in patients with hypothyroidism receiving eithermonotherapy with L-thyroxine (L-T4) or combination therapy with L-T4 and L-triiodothyronine (L-T3). DESIGN: We conducted a randomized, controlled trial in 36 premenopausal women with hypothyroidism. The patients were divided into two groups: Group A (n=20) received only L-T4, while Group B received the combination L-T4 and L-T3. The treatment period lasted for 6 months. RESULTS: At baseline, the various parameters examined did not differ in the two groups. No significant difference between monotherapy and combined therapy was demonstrated on TSH level, ECG monitoring, densitometry, or thyroid symptoms score. The lipid profile was better during combined treatment compared to L-T4 alone; in Group A during treatment with L-T4 the levels of cholesterol and low density lipoprotein (LDL) cholesterol were unchanged, while in group B total cholesterol and LDL decreased (p<0.05). The changes in osteocalcin levels did not differ in the two groups, whereas the levels of urine deoxypyridinoline at the end of therapy were higher in the group with combination therapy, compared to monotherapy. CONCLUSION: Compared with L-T4 alone, replacement therapy with the combination of L-T4+L-T3 shows favourable changes in serum lipid profile, but higher activation of bone resorption.
RCT Entities:
OBJECTIVE: The objective of this study was to compare various parameters in patients with hypothyroidism receiving either monotherapy with L-thyroxine (L-T4) or combination therapy with L-T4 and L-triiodothyronine (L-T3). DESIGN: We conducted a randomized, controlled trial in 36 premenopausal women with hypothyroidism. The patients were divided into two groups: Group A (n=20) received only L-T4, while Group B received the combination L-T4 and L-T3. The treatment period lasted for 6 months. RESULTS: At baseline, the various parameters examined did not differ in the two groups. No significant difference between monotherapy and combined therapy was demonstrated on TSH level, ECG monitoring, densitometry, or thyroid symptoms score. The lipid profile was better during combined treatment compared to L-T4 alone; in Group A during treatment with L-T4 the levels of cholesterol and low density lipoprotein (LDL) cholesterol were unchanged, while in group B total cholesterol and LDL decreased (p<0.05). The changes in osteocalcin levels did not differ in the two groups, whereas the levels of urine deoxypyridinoline at the end of therapy were higher in the group with combination therapy, compared to monotherapy. CONCLUSION: Compared with L-T4 alone, replacement therapy with the combination of L-T4+L-T3 shows favourable changes in serum lipid profile, but higher activation of bone resorption.
Authors: Sarah J Peterson; Anne R Cappola; M Regina Castro; Colin M Dayan; Alan P Farwell; James V Hennessey; Peter A Kopp; Douglas S Ross; Mary H Samuels; Anna M Sawka; Peter N Taylor; Jacqueline Jonklaas; Antonio C Bianco Journal: Thyroid Date: 2018-04-05 Impact factor: 6.568
Authors: Jacqueline Jonklaas; Antonio C Bianco; Andrew J Bauer; Kenneth D Burman; Anne R Cappola; Francesco S Celi; David S Cooper; Brian W Kim; Robin P Peeters; M Sara Rosenthal; Anna M Sawka Journal: Thyroid Date: 2014-12 Impact factor: 6.568
Authors: B Biondi; L Bartalena; L Chiovato; A Lenzi; S Mariotti; F Pacini; A Pontecorvi; P Vitti; F Trimarchi Journal: J Endocrinol Invest Date: 2016-07-29 Impact factor: 4.256
Authors: Elizabeth A McAninch; Kumar B Rajan; Corinne H Miller; Antonio C Bianco Journal: J Clin Endocrinol Metab Date: 2018-08-15 Impact factor: 5.958