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Age-related therapeutic response to antithyroid drug in patients with hyperthyroid Graves' disease
Objective:
To determine whether there is an age-related difference in the therapeutic response to antithyroid drugs in hyperthyroid Graves' disease.
Design:
Retrospective analysis of treatment duration and recurrence rate.
Patients:
Two hundred and twenty-two patients who have triiodothyronine-suppressible thyroids within 4 years of methimazole treatment.
Measurements:
Serum thyroid hormone levels, serum thyrotropin receptor antibody titer, and thyroidal radioiodine uptake.
Main Results:
A longer period of methimazole treatment was needed to normalize serum thyroid hormone levels and to restore normal thyroidal triiodothyronine suppressibility in young than in aged patients. There was an average 10-month lag between normalization of thyrotropin receptor antibody titer and restoration of thyroidal triiodothyronine suppressibility in both young and aged patients. Recurrence after discontinuation of methimazole was more frequent in young than in aged patients.
Conclusions:
Aged patients with hyperthyroid Graves' disease show a more favorable response to antithyroid drugs than young counterparts.
Insights
Older adults with hyperthyroid Graves' disease respond better to antithyroid drugs like methimazole. Young patients require longer treatment and have higher recurrence rates, indicating age influences therapeutic outcomes.
Area of Science:
- Endocrinology
- Internal Medicine
Background:
- Graves' disease is a common cause of hyperthyroidism.
- Antithyroid drugs (ATDs) are a primary treatment modality.
- Age-related differences in treatment response are not well-established.
Purpose of the Study:
- To investigate age-related variations in therapeutic response to ATDs in hyperthyroid Graves' disease.
- To compare treatment duration and recurrence rates between young and aged patients.
Main Methods:
- Retrospective analysis of 222 patients treated with methimazole.
- Evaluation of treatment duration, recurrence rates, serum thyroid hormone levels, TSH receptor antibody titers, and thyroidal radioiodine uptake.
Main Results:
- Younger patients required longer methimazole treatment for normalization of thyroid hormones and suppressibility.
- Recurrence of hyperthyroidism was more frequent in younger patients post-treatment.
- A consistent lag was observed between antibody normalization and thyroid suppressibility restoration in both age groups.
Conclusions:
- Aged patients demonstrate a more favorable therapeutic response to ATDs in hyperthyroid Graves' disease.
- Age is a significant factor influencing the effectiveness and duration of ATD therapy.
- Findings suggest personalized treatment strategies based on patient age.