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Thyroid dysfunction in antiretroviral treated children
Alessandra Viganò1, Sara Riboni, Roberta Bianchi
1University of Milan, L Sacco Hospital, L Sacco Hospital, Milan, Italy. alessandra.vigan@unimi.it
Insights
Thyroid abnormalities are common in children on highly active antiretroviral therapy (HAART), with 35% showing issues like low free thyroxine. Regular thyroid function monitoring is recommended for these pediatric patients.
Area of Science:
- Pediatric Endocrinology
- Infectious Diseases
- HIV/AIDS Research
Background:
- Thyroid dysfunction is prevalent in adults with HIV on HAART.
- Limited data exists on thyroid function in HIV-infected children undergoing HAART.
- This study addresses the gap in understanding pediatric thyroid health in the context of HAART.
Purpose of the Study:
- To evaluate thyroid function in children with HIV receiving HAART.
- To identify the prevalence and types of thyroid abnormalities in this population.
Main Methods:
- Assessed 52 HIV-infected children on HAART for thyroid dysfunction.
- Measured serum concentrations of TSH, FT4, FT3, TG, rT3, and thyroid antibodies (anti-TG, anti-TSM).
Main Results:
- 18 (35%) children exhibited thyroid abnormalities, primarily isolated low FT4 (16 children).
- Children with low FT4 had shorter HAART duration and lower CD4 cell percentage.
- Thyroid-stimulating hormone (TSH) response to TRH test was normal in low FT4 cases.
Conclusions:
- Thyroid abnormalities frequently occur in HAART-treated children, often asymptomatic.
- Routine thyroid function monitoring is crucial for pediatric patients on HAART.
Background:
A high rate of thyroid disorders has been described in HIV-infected adults treated with highly active antiretroviral therapy (HAART), but data on children are lacking. We aimed to assess thyroid function in pediatric patients.
Methods:
Fifty-two HIV-infected children receiving HAART were assessed for signs of thyroid dysfunction and serum concentrations of thyrotropin (TSH), free thyroxin (FT4), free triiodothyronine (FT3), thyroglobulin (TG), reverse triiodothyronine (rT3), anti-TG and antimicrosomal (anti-TSM) antibodies.
Results:
Eighteen (35%) children showed thyroid abnormalities: isolated low FT4 value in 16; subclinical hypothyroidism in 1; and symptomatic hypothyroidism in 1. Children with low FT4 values as compared with the 34 children without thyroid dysfunction were similar for stage of disease, number of patients with undetectable HIV-RNA, FT3, TSH, TG, rT3, anti-TSM and anti-TG values, whereas they had shorter duration of HAART exposure (P = 0.019) and lower CD4 cell percentage (P = 0.035). The thyrotropin-releasing hormone (TRH) test was normal in all children with low FT4 values. Among children with low FT4, FT4 concentrations correlated positively with CD4 cell percentage (P < 0.05) and duration of HAART exposure (P < 0.05). The case with subclinical hypothyroidism had high basal TSH (7.3 microunits/ml), normal TSH response to TRH test and normal FT4, FT3, TG, rT3, anti-TG and anti-TSM antibodies. The case with symptomatic hypothyroidism had low FT4 (6.6 pg/ml) and high TSH (44 microunits/ml), TG (55 ng/ml), anti-TG (666 IU/ml) and anti-TSM (123 IU/ml).
Conclusion:
Thyroid abnormalities occur frequently in HAART-treated children even in the absence of clinical symptoms. These data suggest a need of regular thyroid function monitoring.
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