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Physical frailty is related to oxidative stress through thiol/disulfide homeostasis parameters

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Key summary points

AbstractSection Aim

To evaluate the relationship between frailty, and thiol/disulfide homeostasis parameters, and ischemia-modified albumin levels.

AbstractSection Findings

Native thiol, total thiol levels, and disulfide–thiol ratios were associated with physical frailty.

AbstractSection Message

Thiol/disulfide homeostasis parameters can be used to identify physical frailty. Newly developed oxidative stress parameters are required to determine frailty, as indicated by both phenotype and cumulative models.

Abstract

Aim

To evaluate relationship between frailty and oxidative stress through thiol/disulfide homeostasis parameters [Native thiol (NT), total thiol (TT), and disulfide levels (D), disulfide–native thiol (D/NT), disulfide–total thiol (D/TT), native thiol–total thiol (NT/TT) ratios, and ischemia-modified albumin levels (IMA)].

Materials and methods

In total, 139 community-dwelling older adults were included. The frailty status, defined by the FRIED frailty index (FFI) and Clinical Frailty Scale (CFS), and comprehensive geriatric assessment results compared with thiol/disulfide homeostasis parameters and ischemia-modified albumin levels.

Results

NT and TT levels were significantly lower in the frail group (respectively; p = 0.014, p = 0.020). The FFI scores were correlated with the levels of NT, TT, D/NT, D/TT, and NT/TT (respectively; r = − 0.25, r = − 0.24, r = 0.17, r = 0.17, r = − 0.17). The significant correlation could not be retained with the CFS scores. In ROC analysis, the AUC for NT was calculated as 0.639 in diagnosing frailty according to the FFI (95% CI 0.542–0.737), AUC was 0.638 for TT (95% CI 0.540–0.735), and AUC was 0.610 for NT/TT (95% CI 0.511–0.780). The AUC was calculated as 0.610 for both D/NT and D/TT in diagnosing physical frailty (95% CI 0.511–0.708).

Conclusion

Thiol/disulfide homeostasis parameters can be a potential biomarker in diagnosing physical frailty. However, further studies are needed for diagnosing frailty defined with cumulative deficit models.

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Data availability

The data that support the findings of this study are available on request from the corresponding author.

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  1. Division of Geriatrics, Department of Internal Medicine, Hacettepe University Medical School, Faculty of Medicine, Altındag, Ankara, Turkey

    Merve Hafızoğlu, Zeynep Şahiner, Didem Karaduman, Cansu Atbaş, Ayşe Dikmeer, İbrahim İleri, Cafer Balcı, Burcu Balam Doğu, Mustafa Cankurtaran & Meltem Gülhan Halil

  2. Department of Clinical Biochemistry, Ankara Bilkent City Hospital, Ankara, Turkey

    Funda Eren, Salim Neşelioğlu & Özcan Erel

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Hafızoğlu, M., Eren, F., Neşelioğlu, S. et al. Physical frailty is related to oxidative stress through thiol/disulfide homeostasis parameters. Eur Geriatr Med 15, 423–434 (2024). https://doi.org/10.1007/s41999-023-00911-w

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