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Article Publish Status: FREE
Abstract Title:

The Effect of Alpha-Lipoic Acid on Diabetic Peripheral Neuropathy and the Upcoming Depressive Disorders of Type II Diabetics.

Abstract Source:

Cureus. 2021 Jan 18 ;13(1):e12773. Epub 2021 Jan 18. PMID: 33614362

Abstract Author(s):

Dimitrios T Karalis, Tilemachos Karalis, Stergios Karalis, Angeliki S Kleisiari, Foteini Malakoudi, Konstantina Eleni V Maimari

Article Affiliation:

Dimitrios T Karalis

Abstract:

Introduction Peripheral neuropathy is one of the possible complications of diabetes. Alpha-lipoic acid (a-lipoic acid or ALA) is a powerful antioxidant cofactor synthesized in mitochondria that could help stimulate nerves and regenerate nerve fibers, thus preventing disease progression. Moreover, the possible feeling of oppression from the lifestyle changes needed to avoid the complications of diabetes may contribute to the development of depressive symptoms. ALA increases insulin sensitivity, which could increase serotonin synthesis and thus reduce the manifestations of depressive disorder. Aim The aim of this study is to investigate the therapeutic effect after oral administration of a-lipoic acid in patients with type II diabetes mellitus, regarding the possibility of developing peripheral neuropathy and the possibility of developing depressive disorder due to the existence of diabetes type II. Methods The study sample consisted of 148 Greek patients, type II diabetics, 68 men and 80 women, aged 50-75 years. All of them were non-smokers and did not consume alcohol. Their treatment was a combination of gliclazide, sodium-glucose-linked transporter 2 (SGLT-2) inhibitors, metformin, and glucagon-like peptide 1 (GLP-1) analogs. None of them were under insulin administration. Any other treatment received chronically from the patients for other comorbidities was not altered or paused. All patients were in regular monitoring of renal, hepatic, and ocular function, which was normal. Patients were monitored with a balanced diet, based on equivalents, in order to maintain an almost constant body mass index (BMI). All were given one tablet of 600 mg a-lipoic acid, two hours before a meal, for eight months, and the incidence of developing peripheral neuropathy and depressive disorder was assessed, using the Subjective Peripheral Neuropathy Screen Questionnaire (SPNSQ) and Beck Depression Inventory (BDI) questionnaire. Results ALA administration after both four and eight months resulted in statistically significant results and, specifically, the peripheral neuropathy development mean score was reduced by 4.79 at four months and 6.22 after eight months. Concerning the incidenceof depressive disorder, an average decrease of 4.43 in the related depression score was observed at the four-month milestone and 7.56 at eight months, both statistically significant. Conclusion A-lipoic acid is a powerful antioxidant and, when used with conventional treatment, has shown to significantly decrease the incidence of depression and peripheral neuropathy in patients with type 2 diabetes mellitus.

Study Type : Human Study

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