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Glucagon: a potential protective factor against peripheral nerve compromise in patients with type 2 diabetes and obesity.

Diabetol Metab Syndr

January 2025

Department of Endocrinology, Affiliated Hospital 2 of Nantong University, and First People's Hospital of Nantong City, No.666 Shengli Road, Nantong, 226001, China.

Background: Increased glucagon levels are now recognized as a pathophysiological adaptation to counteract overnutrition in type 2 diabetes (T2D). This study aimed to elucidate the role of glucagon in peripheral nerve function in patients with T2D with different body mass indices (BMIs).

Methods: We consecutively enrolled 174 individuals with T2D and obesity (T2D/OB, BMI ≥ 28 kg/m), and 480 individuals with T2D and nonobesity (T2D/non-OB, BMI < 28 kg/m), all of whom underwent oral glucose tolerance tests to determine the area under the curve for glucagon (AUC).

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Electrophysiological Monitoring of Asymptomatic Transthyretin Mutation Carriers.

Muscle Nerve

February 2025

Referral Centre for Neuromuscular Diseases and ALS, La Timone University Hospital, Aix-Marseille University, ERN Neuro-NMD, Marseille, France.

Introduction/aims: It is imperative to screen asymptomatic carriers of transthyretin (TTR) mutations to initiate treatment early. The protocol for repeated electrodiagnostic (EDX) assessments over time lacks standardization. Our aim was to report the electrophysiological evolution of a cohort of asymptomatic carriers and to determine which biomarkers were most sensitive to change.

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The use of F-wave study may help to gain insight into electrophysiological significance of spinocerebellar Ataxias (SCAs). Particularly, the difference of F-wave features between Chinese SCA1, SCA2 and SCA3 patients were scarcely reported. 20 SCA1, 20 SCA2, 46 SCA3 patients and 30 healthy controls underwent nerve (median, ulnar, tibial) conduction and F-wave studies, and electrophysiology parameters were compared between them.

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Aims: The sensitivity and specificity of electrodiagnostic parameters in diagnosing carpal tunnel syndrome (CTS) have been reported differently, and this study aims to address this gap.

Methods: This case-control study was conducted on 57 cases with CTS and 58 controls without complaints, such as pain or paresthesia on the median nerve. The main assessed electrodiagnostic parameters were terminal latency index (TLI), residual latency (RL), median ulnar F-wave latency difference (FdifMU), and median sensory latency-ulnar motor latency difference (MSUMLD).

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Creatine kinase (CK) has been associated with neuropathy, but the mechanisms are uncertain. We hypothesized that peripheral nerve function is impaired in subjects with persistent CK elevation (hyperCKemia) compared to age- and sex matched controls in a general population. The participants were recruited from the population based Tromsø study in Norway.

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