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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 BMC+Endocr+Disord
2025 ; 25
(1
): 206
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Correlation between thyroid sensitivity indices and bone metabolism in newly
diagnosed middle aged and elderly patients with type 2 diabetes mellitus with
normal thyroid function
#MMPMID40908484
Fang L
; Lin C
; Gu L
; Zeng H
; Zhang Y
; Liu J
BMC Endocr Disord
2025[Sep]; 25
(1
): 206
PMID40908484
show ga
OBJECTIVE: To investigate the association between thyroid hormone sensitivity
indices and bone metabolism markers in newly diagnosed middle-aged and elderly
type 2 diabetes mellitus (T2DM) patients with normal thyroid function. METHOD: We
retrospectively analyzed 350 newly diagnosed T2DM patients (??45 years),
stratified by bone mineral density into Group A (normal bone density group) and
Group B (low bone mass and osteoporosis group). General data and clinical
biochemical parameters were collected: free triiodothyronine (FT3), free
thyroxine (FT4), thyroid-stimulating hormone (TSH), 25-hydroxyvitamin D
(25(OH)D), parathyroid hormone (PTH), osteocalcin (OC), bone-specific alkaline
phosphatase (BALP), serum calcium (Ca), serum phosphorus (P), fasting plasma
glucose (FPG), glycosylated hemoglobinA1c (HbA1c), total cholesterol (TC),
triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density
lipoprotein cholesterol (HDL-C), serum creatinine (SCr), serum uric acid (SUA),
and estimated Glomerular Filtration Rate (eGFR). Thyroid sensitivity indices
calculated were: thyrotropin resistance index (TT4RI), TSH index (TSHI), the
ratio of FT3/FT4, and the secretory capacity of the thyroid (SPINA-GT).
Associations were assessed using multiple linear regression, binary logistic
regression, and stratified analysis. RESULTS: Group B patients had lower BMI,
DBP, FT3, FT3/FT4 ratio, FPG, HbA1c, TG, SCr and SUA and higher age, female
proportion, OC and HDL-C (P?0.05). Spearman Correlation analysis showed that
25(OH)D was positively associated with FT3/FT4 ratio; Ca was positively
associated with FT3; and P was associated with TSH, TT4RI and TSHI and negatively
associated with SPINA-GT (P?0.05). Multiple linear regression analysis showed
that FT3, FT3/FT4 ratios were positive factors for serum OC, BALP and Ca, and FT4
was an inverse correlation with serum BALP (P?0.05). Binary Logistic regression
analysis showed that the elevated FT3/FT4 ratio was a protective factor for the
occurrence of low bone mass and osteoporosis (P?0.05). Stratified by HbA1c, the
effect of FT3/FT4 ratio on low bone mass and osteoporosis showed that the FT3/FT4
ratio was inversely associated with the occurrence of low bone mass and
osteoporosis in the HbA1c?7% group (P?0.05). Simple effect analysis of the
interaction between FT3/FT4 ratio, HbA1c and bone density showed that T2DM
patients with HbA1c???7% had a lower FT3/FT4 ratio and a higher risk of
developing low bone mass and osteoporosis compared to those with HbA1c?7%.
CONCLUSION: In newly diagnosed middle-aged and elderly T2DM patients with normal
thyroid function, the peripheral sensitivity to thyroid hormone indix FT3/FT4
ratio was significantly associated with serum OC, BALP, and Ca levels. The lower
FT3/FT4 ratio may increase the risk of low bone mass and osteoporosis in newly
diagnosed T2DM patients with normal thyroid function, and the reduced index may
serve as a tool for early screening and a predictor of low bone mass and
osteoporosis.
|*Biomarkers/blood
[MESH]
|*Bone Density
[MESH]
|*Bone and Bones/metabolism
[MESH]
|*Diabetes Mellitus, Type 2/metabolism/physiopathology/complications
[MESH]