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PTH levels, sleep quality, and cognitive function in primary hyperparathyroidism

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Abstract

Background

Cognitive function in patients with primary hyperparathyroidism (PHPT) may be affected and be identified to have been linked to the level of parathyroid hormone (PTH). Previous studies have suggested that patients with PHPT present poor sleep quality, which might interact with cognitive decline. The purpose of this study was to determine whether sleep quality mediates the association between PTH level and cognitive function and investigate whether surgery improves sleep quality and cognition in PHPT patients.

Methods

Between June 2019 and August 2022, we recruited 146 patients diagnosed with PHPT (n = 146). We collected clinical data from medical records and evaluated sleep quality and cognition preoperatively and 2 months postoperatively by using the Pittsburgh Sleep Quality Index and Min-Mental State Examination. We examined the mediation effects of sleep disturbance and latency on correlations between PTH level and cognitive impairment by using the Bootstrap method.

Results

The sleep quality and cognitive function were correlated with PTH level before surgery. Sleep latency or sleep disturbance exhibited a partial mediating effect on the association between PTH level and MMSE scores in PHPT patients (p < 0.05). In PHPT patients, there was a significant decline in PTH levels and an improvement in cognitive function post-surgery compared to pre-surgery, but no significant differences in sleep quality.

Conclusion

Sleep disturbance and sleep latency may mediate the association between PTH level and cognitive impairment in PHPT before surgery. The surgery could reduce PTH levels and improve cognition, but might not improve sleep quality in PHPT patients.

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Funding

Clinical Research Incubation Project, Beijing Chao-Yang Hospital, Capital Medical University Number: CYFH202219.

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Authors and Affiliations

  1. Department of Thyroid and Neck Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China

    Yuting Wang, Teng Zhao, Hong Shen, Xing Liu, Jiacheng Wang, Qian Wang, Rongfang Shen, Dalin Feng & Bojun Wei

  2. Department of Anaesthesia, Beijing Shijitan Hospital, Capital Medical University, Beijing, China

    Yunhui Xin

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Contributions

Y.W.: writing-original draft, formal analysis, software, visualization. Y.X.: formal analysis, visualization. T.Z.: conceptualization, methodology. H.S.: validation. X.L., J.W., Q.W.: data curation. R.S., D.F.: investigation. B.W.: writing-review & editing, supervision.

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Correspondence to Bojun Wei.

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These authors contributed equally: Yuting Wang, Yunhui Xin

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Wang, Y., Xin, Y., Zhao, T. et al. PTH levels, sleep quality, and cognitive function in primary hyperparathyroidism. Endocrine 81, 379–387 (2023). https://doi.org/10.1007/s12020-023-03410-x

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