PMID- 32509983 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231111 IS - 2405-8440 (Print) IS - 2405-8440 (Electronic) IS - 2405-8440 (Linking) VI - 6 IP - 5 DP - 2020 May TI - Assessment of fatigue severity and neurocognitive functions in the real setting of Ramadan in patients with type 2 diabetes mellitus. PG - e03997 LID - 10.1016/j.heliyon.2020.e03997 [doi] LID - e03997 AB - OBJECTIVES: Type 2 diabetes mellitus (T2DM) is linked with a risk of dementia and decline in neurocognitive function. The current observational case-control study was conducted to evaluate the effect of fasting during Ramadan on cognitive functions and fatigue severity in T2DM patients using the Cambridge Neuropsychological Test Automated Battery (CANTAB). METHODS: This research was conducted at King Saud University Medical city, on 82 subjects including 43 control and 39 T2DM patients of both genders. The standardized Fatigue Severity Scale (FSS) and tests from CANTAB, including the Motor Screening Task (MOT), Spatial Span (SSP) and Intra-Extra Dimensional Set Shift (IED) were recorded during 3(rd) week and 2-3 weeks after Ramadan under controlled environmental conditions. Neurocognitive functions were recorded through CANTAB. RESULTS: IED errors (24.43 vs 50.73, p = 0.007), MOT mean and median latency (1466.32 vs 1120.27, p = 0.002) were significantly higher in T2DM than controls. IED stages completed (7.43 vs 8.69, p = 0.003) and SSP Span length were significantly lower in T2DM than controls (4.13 vs 4.82, p = 0.059). The significant differences between T2DM patients and controls persisted in the post. T2DM patients made more errors and completed less IED stages than did the controls, indicating that a worsened flexibility of attention relative to controls. Moreover, T2DM patients exhibited longer latencies in MOT, indicating poor motor performance. A comparison of performances by T2DM patients on FSS and CANTAB during and after Ramadan showed that fasting substantially increased fatigue scales, motor performance, and working-memory capacity. CONCLUSIONS: Patients with T2DM have impaired cognitive functions including poor motor performance, low flexibility of attention, and poor working memory capacity compared to healthy control subjects during and also in post Ramadan period. However, there is no clear statistical evidence that the cognitive functions (except for SSP SL scores) and fatigue severity of T2DM subjects differ between Ramadan and after Ramadan in both T2DM and controls. CI - (c) 2020 Published by Elsevier Ltd. FAU - Alfahadi, Abdulrahman AU - Alfahadi A AD - Department of Internal Medicine, King Faisal Specialist Hospital & Research Centre, 12713, Saudi Arabia. FAU - Habib, Syed Shahid AU - Habib SS AD - Department of Physiology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia. FAU - Alharbi, Koloud AU - Alharbi K AD - College of Medicine, Ibn Sina National College, Jeddah, 22421, Saudi Arabia. FAU - Alturki, Deema AU - Alturki D AD - Department of Internal Medicine, King Faisal Specialist Hospital & Research Centre, 12713, Saudi Arabia. FAU - Alshamrani, Fatimah AU - Alshamrani F AD - Department of Physiology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia. FAU - Bashir, Shahid AU - Bashir S AD - Department of Neurophysiology, Neuroscience Center, King Fahad Specialist Hospital Dammam, Dammam, Saudi Arabia. LA - eng PT - Journal Article DEP - 20200530 PL - England TA - Heliyon JT - Heliyon JID - 101672560 PMC - PMC7264050 OTO - NOTNLM OT - CANTAB OT - Cognition OT - Fasting OT - Holy Ramadan OT - Neuroscience OT - Type 2 diabetes mellitus EDAT- 2020/06/09 06:00 MHDA- 2020/06/09 06:01 PMCR- 2020/05/30 CRDT- 2020/06/09 06:00 PHST- 2019/04/14 00:00 [received] PHST- 2019/12/12 00:00 [revised] PHST- 2020/05/12 00:00 [accepted] PHST- 2020/06/09 06:00 [entrez] PHST- 2020/06/09 06:00 [pubmed] PHST- 2020/06/09 06:01 [medline] PHST- 2020/05/30 00:00 [pmc-release] AID - S2405-8440(20)30841-0 [pii] AID - e03997 [pii] AID - 10.1016/j.heliyon.2020.e03997 [doi] PST - epublish SO - Heliyon. 2020 May 30;6(5):e03997. doi: 10.1016/j.heliyon.2020.e03997. eCollection 2020 May.