Defective thyroidal iodine concentration in protein-calorie malnutrition

The Journal of Clinical Endocrinology and Metabolism
J E GaitanE Gaitan

Abstract

Although protein-calorie malnutrition (PCM) is known to result in various abnormalities of thyroid function, the exact relationship between the two is not clearly understood. Therefore, the thyroid function of 10 men, 13-55 yr of age, with severe PCM was studied in a clinical research ward before and 3-4 months after protein-calorie repletion. Before repletion, all subjects had low serum T4 (mean +/- SEM, 5.1 +/- 0.5 micrograms/dl) and T3 (74 +/- 6 ng/dl) concentrations. Eight subjects were chemically euthyroid, and their free T4 (1.5 +/- 0.1 ng/dl) and serum TSH (2.9 +/- 1.4 microU/ml) values were normal. Two subjects were chemically hypothyroid, with low free T4 values and high serum TSH values. After repletion, the 8 euthyroid subjects had significant increases in serum T4 (P less than 0.01) and T3 (P less than 0.005), but TSH did not change. Serum T4 and T3 were still lower (P less than 0.05-0.001) and TSH higher (P less than 0.01) than in 28 normal men of comparable age coming from the same area. After repletion, values remained unchanged in the 2 hypothyroid subjects, except for moderate increases in serum T3 and slight decreases in TSH. In all PCM subjects, values of thyroidal exchangeable iodine (23.1 +/- 7 vs. 42.9 +/-...Continue Reading

Citations

Mar 1, 1991·World Journal of Surgery·E GaitanG V Poole
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Jul 25, 2021·International Journal of Environmental Research and Public Health·Fuad I AbbagNabil J Awadalla

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