Journal of the peripheral nervous system : JPNS · 2025
Differential Effects of Visceral and Subcutaneous Adiposity on Peripheral Neuropathy.
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Ponirakis Georgios, Peerzada Leeza, Petropoulos Ioannis N, Gad Hoda, Abdulshakoor Sidra, Concepcion Jenneth M, Khalfalla Sara H, Elamin Iynas S A, AlZawqari Abeer T H, Elgassim Einas, Baraka Areej, Mahfoud Ziyad R, El Deeb Marwa A, Afifi Nahla, Malik Rayaz A
Аннотация
OBJECTIVE: Obesity increases the risk of diabetic neuropathy. This study investigates the impact of visceral (VAT) and subcutaneous adipose tissue (SAT) volume on peripheral neuropathy.
METHODS: A total of 302 adults from the Qatar Biobank (QBB) underwent iDXA to measure VAT and SAT volumes, intima media thickness (IMT), and peripheral neuropathy assessments using corneal confocal microscopy (CCM), vibration perception threshold (VPT), and the DN4 questionnaire.
RESULTS: The QBB cohort was aged 43.9 ± 12.9 years, of whom 43.7% were women, 42.1% had obesity, 17.4% had type 2 diabetes (T2D) and 10.9% had hypertension. VAT was associated with T2D, hypertension, higher HbA1c, diastolic blood pressure, triglycerides, and inflammatory markers, and lower HDL (p < 0.0001). There were no significant associations between SAT and these cardiovascular risk factors. VAT volume was associated with lower corneal nerve inferior whorl length (IWL) (p < 0.05) and higher VPT (p = 0.01), partially mediated by elevated HbA1c (p < 0.05, p = 0.001) and IMT (p < 0.0001), while its association with neuropathic symptoms was fully mediated by systolic blood pressure (p < 0.05), T2D (p < 0.01), and triglycerides (p = 0.05). SAT showed no associations with measures of neuropathy.
CONCLUSIONS: VAT but not SAT is associated with peripheral neuropathy. This study underscores the need to target VAT to improve neuropathy.
METHODS: A total of 302 adults from the Qatar Biobank (QBB) underwent iDXA to measure VAT and SAT volumes, intima media thickness (IMT), and peripheral neuropathy assessments using corneal confocal microscopy (CCM), vibration perception threshold (VPT), and the DN4 questionnaire.
RESULTS: The QBB cohort was aged 43.9 ± 12.9 years, of whom 43.7% were women, 42.1% had obesity, 17.4% had type 2 diabetes (T2D) and 10.9% had hypertension. VAT was associated with T2D, hypertension, higher HbA1c, diastolic blood pressure, triglycerides, and inflammatory markers, and lower HDL (p < 0.0001). There were no significant associations between SAT and these cardiovascular risk factors. VAT volume was associated with lower corneal nerve inferior whorl length (IWL) (p < 0.05) and higher VPT (p = 0.01), partially mediated by elevated HbA1c (p < 0.05, p = 0.001) and IMT (p < 0.0001), while its association with neuropathic symptoms was fully mediated by systolic blood pressure (p < 0.05), T2D (p < 0.01), and triglycerides (p = 0.05). SAT showed no associations with measures of neuropathy.
CONCLUSIONS: VAT but not SAT is associated with peripheral neuropathy. This study underscores the need to target VAT to improve neuropathy.