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Aims: In this study, we determined the association between thyroid-stimulating hormone (TSH) and diabetic macular edema (DME) by assessing the prevalence and risk factors for DME in type 2 diabetes mellitus (T2DM) patients with different thyroid dysfunctions.
Methods: This was a retrospective cross-sectional study including 1003 euthyroid and 92 subclinical hypothyroidism (SCH) T2DM patients. DME status was detected by optical coherence tomography (OCT). The association between TSH and DME and the impact of TSH on DME were analyzed.
Results: The DME prevalence was 28.3% in the SCH patients and 14.0% in the euthyroid population. The serum FT4 (P = 0.001) and FT3 (P < 0.001) levels were significantly higher in the non-DME group than in the DME group, and the TSH level (P < 0.001) was significantly lower. Four subgroups (G1-G4) were divided by TSH level, and the chi-square test indicated that even in the normal range, the TSH level was positively related to DME prevalence (P = 0.001). Subgroup data indicated that the association between TSH and DME detected by OCT (P = 0.001) was stronger than the correlation between TSH and diabetic retinopathy detected by digital retinal photographs (P = 0.027). The logistic regression model confirmed that elevated TSH was an independent risk factor for DME. The odds ratio was 1.53 (P = 0.02).
Conclusions: A high TSH level was an independent risk factor for DME. More attention should be given to the TSH level in T2DM patients due to its relationship with diabetic complications.
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http://dx.doi.org/10.1530/EC-22-0122 | DOI Listing |
Ann Afr Med
August 2025
Department of General Medicine, Dr. D. Y. Patil Medical College, Hospital and Research Centre, Pune, Maharashtra, India.
Background: Prediabetes represents a transitional state in glucose metabolism with an increasing global and national prevalence, particularly in India. Recent evidence suggests that both thyroid dysfunction and chronic low-grade inflammation may play pivotal roles in the progression of prediabetes to overt Type 2 diabetes mellitus (T2DM). Thyroid hormones regulate glucose metabolism, while inflammatory markers such as white blood cell (WBC) count and high-sensitivity C-reactive protein (hs-CRP) are indicators of systemic inflammation often elevated in metabolic disorders.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Department of Biostatistics and Epidemiology, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Subclinical hypothyroidism (SCH) is biochemically characterized by elevated thyrotropin (thyroid-stimulating hormone [TSH]) levels, while free thyroxine (FT4) levels remain normal. Given the high prevalence of vitamin D deficiency in Iran, investigating the association between vitamin D levels and SCH may improve treatment. A case-control study was conducted at the endocrinology clinic of Imam Khomeini Hospital, affiliated with Ahvaz Jundishapur University of Medical Sciences.
View Article and Find Full Text PDFFront Pediatr
August 2025
College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
Selenocysteine insertion sequence-binding protein 2 () is crucial for the biosynthesis of selenoproteins, including iodothyronine deiodinases, which play a vital role in thyroid hormone metabolism. Mutations in can disrupt thyroid function, leading to various clinical manifestations across multiple systems. We present the case of a 3-year-old Saudi female who was referred for genetic testing due to poor growth, developmental abnormalities, and notable facial dysmorphism.
View Article and Find Full Text PDFIndian J Endocrinol Metab
August 2025
Department of Gynaecology and Obstetrics, MKCG Medical College, Berhampur, Odisha, India.
Introduction: Gestational age, ethnicity, assay method, thyroid autoimmunity and iodine status of the community affect thyroid hormone levels in pregnancy, and there is a need to establish trimester-specific reference ranges for thyroid hormones across different regions of the world. There was no previous study regarding this from this part of the country. The aim of this study was to establish trimester-specific reference range for thyroid hormones during pregnancy in a tertiary care centre in Southern Odisha.
View Article and Find Full Text PDFAuris Nasus Larynx
September 2025
Department of Otolaryngology, Tenri Hospital, Tenri, Nara, Japan.
Objective: This study aimed to identify prognostic factors for postoperative hypothyroidism and assess the timing of its onset in patients who underwent hemithyroidectomy for thyroid tumors. Despite normal preoperative thyroid function, some patients develop postoperative hypothyroidism, necessitating lifelong thyroid hormone replacement therapy. Identifying risk factors and establishing appropriate follow-up guidelines are essential for optimizing patient management.
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