Lima JGD, Nóbrega LHC, Nóbrega MLC, Santos Júnior ACD, Fernandes FDC, Mesquita DJTMD, Souza ABCD. [Influence of thyroid function in CPK serum levels].
Arq Bras Endocrinol Metabol 2012;
56:190-4. [PMID:
22666735 DOI:
10.1590/s0004-27302012000300007]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2011] [Accepted: 03/05/2012] [Indexed: 11/21/2022]
Abstract
OBJECTIVE
To determine serum CPK variation based on TSH e free T4 (FT4), and to assess serum CPK in pathological states of the thyroid (hyperthyroidism and hypothyroidism), in relation to the euthyroidism.
MATERIAL AND METHODS
We evaluated retrospectively 6,230 laboratory results of TSH and CPK from 2007 to 2011. From these, 3,369 had free T4 results. We evaluated the correlation between CPK and TSH and the pathological states of the thyroid.
RESULTS
The correlation between TSH and CPK was positive (r = 0.065), while that between CPK and FT4 was negative (r = -0.091, p < 0.05). From the total of results analyzed, 586 (9.4%) were measures of hyperthyroidism, with a median (range) of CPK of 98 U/L (27 to 1,113), and 556 (8.9%) were of hypothyroidism, with CPK of 114 U/L (25-4,182).
CONCLUSION
A positive correlation was found between serum CPK and TSH, and a negative correlation between CPK and FT4. CPK was lower in the group with hyperthyroidism, and greater in that with hypothyroidism.
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