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Background: Parkinson's disease is a neurodegenerative disease manifested as increased tremor, bradykinesia, rigidity, and postural instability. Brain-derived neurotrophic factor (BDNF) is essential for neurocognitive function. However, its cardiometabolic effect has recently been identified in health and disease, but not in PD. Therefore, the current study examined the relationship of BDNF with glucose and lipid profile., Methods: This was a cross sectional comparative study where PD patients (n = 26) and age-matched healthy controls (n = 27) were recruited. Blood samples were drawn to determine BDNF, glucose, and lipid profile including total cholesterol (TC), HDL, LDL, triglyceride (TriG)., Result: The linear regression showed that BDNF predicted 11.9 % of TC (p = 0.05), 3.0 % of HDL (p = 0.003), 27.3 % of LDL (p = 0.006), 16.6 % of TriG (p = 0.04), 15.8 % of TC/HDL (p = 0.06), 22.1 % of TC/LDL (p = 0.01), and 35.1 % of TriG/HDL (p = 0.001) but not glucose (B = -0.006; CI = -0.19/0.18; F = 0.005; p = 0.9) and LDL/HDL (B = 0.06; CI = -0.17/0.3; F = 0.3; p = 0.6). Subsequent ANCOVA revealed differences (p < 0.05) in TC, HDL, LDL, TC/LDL, and TriG/HDL but not in glucose, TriG, and TC/HDL among the patients with low-BDNF versus high-BDNF., Significance: The results demonstrate a relationship of BDNF with lipid profile suggesting the importance of BDNF for lipid metabolism in PD., Competing Interests: Declaration of competing interest None., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)

Waterpipe tobacco smoking (WP) is associated with a vast range of detrimental health effects, including memory impairment and anti-oxidative scavenging dysfunction. Forced swimming exercise (FSE) is known to improve cognitive function and general wellbeing. In this study, we evaluated the neuroprotective effect of FSE on memory impairment induced by exposure to WP in the rat model. Wistar male rats were divided into four groups: fresh air (control), WP exposure, FSE, and WP/FSE. Animals were exposed to WP for 1 h/day, 5 days/week for 4 weeks. At the same time, animals were forced to swim 1 h/day as 5 min swimming followed by 5 min rest, 5 days/ week for 4 weeks. Spatial learning and memory was assessed using Radial Arm Water Maze (RAWM). Additionally, hippocampal oxidative stress biomarkers including reduced glutathione (GSH), oxidized glutathione (GSSG), GSH/GSSG ratio, glutathione peroxidase (GPx), Catalase, and TBARS were analyzed. Key findings: this study showed that WP exposure impaired both short- and long-term memory (P < 0.05). On the other hand, FSE prevented memory impairment induced by WP exposure (P < 0.05). Moreover, WP exposure reduced activity of catalase, GPx, and GSH/GSSG ratio (P < 0.05) in the hippocampus, which were also normalized by FSE. However, no changes were detected in GSH and TBARS levels in WP exposure and/or FSE groups. In conclusion, WP exposure induced both short- and long- term memory impairments, which was prevented by FSE. This improvement in memory function might be attributed to oxidative stress biomarkers pathways., (Copyright © 2019 Elsevier Inc. All rights reserved.)

Aims: Tobacco smoking is associated with a vast range of adverse health effects, including diminished cognitive and anti-oxidative capabilities. Conversely, vitamin E (VitE) is known to enhance data acquisition and retention and hippocampal oxidative defense. No studies, however, examined the protective effect of VitE with tobacco administration. Therefore, this study examined the protective effect of VitE on the cognitive and oxidative debilitating effects induced by waterpipe smoking., Materials and Methods: Wistar male rats were divided into four groups: waterpipe smoking, VitE, waterpipe combined with VitE, and control group. The exposure to waterpipe and VitE was for one month and then spatial learning and memory were assesses using Radial Arms Water Maze. Additionally, oxidative stress biomarkers (Catalase, GPx, and TBARS, GSH, GSSG, and GSH/GSSG ratio) were assessed in the hippocampus., Key Findings: The results revealed that waterpipe smoking impaired short-term and long-term memory (P < 0.05). Waterpipe smoking reduced activity of catalase (P < 0.05), GPx (P < 0.05) and GSH/GSSG ratio (P < 0.05) in the hippocampus. Administration of VitE prevented memory impairment and alterations in oxidative stress biomarkers., Significance: waterpipe smoking induces short-term and long-term memory impairments, which were prevented by administration of VitE via its anti-oxidative properties., (Copyright © 2019 Elsevier Inc. All rights reserved.)