Asymptomatic thyroid dysfunction in human immunodeficiency virus-1-infected subjects

ABSTRACT

BACKGROUND: Thyroid hormone abnormalities have been reported elsewhere in human immunodeficiency virus-1 (HIV-1)-infected individuals, but such studies in Nigerians are scarce in literature.

OBJECTIVE: To evaluate thyroid function in HIV-1-infected individuals and to correlate thyroid function parameters with cluster of differentiation (CD4+) cell count.

MATERIALS AND METHODS: Total thyroxine (T4), total triiodothyronine (T3), thyroid-stimulating hormone (TSH), and CD4+ were estimated in 100 HIV-1-positive individuals on highly active antiretroviral therapy (HAART), 100 HIV-1-positive HAART naïve, and 100 HIV-1-negative controls. The mean values were compared between the groups, and CD4+ cell count was correlated with measured thyroid hormones.

RESULTS: Thyroid function abnormalities were seen in 52 HIV-1-positive individuals on HAART and 56 individuals without HAART treatment. The pattern of thyroid hormone abnormalities is similar in both groups. Among the individuals on HAART, 10 had subclinical hypothyroid, 42 sick euthyroid, and 48 had normal thyroid hormones levels. Similarly, among those without HAART therapy, seven had subclinical hypothyroid, 49 sick euthyroid, and 44 had normal thyroid hormones levels. The HIV-1-positive individuals had significantly lower (P < 0.001) CD4+ cell count, TSH (P < 0.05), T3 (P < 0.01), and T4 (P < 0.001) when compared with controls. On the other hand, HIV-1-positive individuals on HAART had significantly higher (P < 0.01) CD4+ cell count and lower (P< 0.05) T4 levels than the HAART naïve group. CD4+ correlated positively with T4 in HIV-1-positive individuals on HAART (r = 0.26; P = 0.016) and HAART naïve (r = 0.218; P = 0.038). There was no significant correlation between CD4+ and measured thyroid hormones in the control individuals.

CONCLUSION: Asymptomatic thyroid hormone abnormalities are common in HIV-infected individuals, and these abnormalities are independent of whether the individuals were on HAART or without HAART treatment.

Key words

Cluster of differentiation - human immunodeficiency virus-1 - thyroid-stimulating hormone - total thyroxine - triiodothyronine

Publication History

Received: 29 December 2016

Accepted: 04 July 2017

Article published online:
19 February 2020

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