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Abdalla Z. Mohamed
University of Queensland
8Publications
2H-index
13Citations
Publications 10
Newest
Abstract Background Diffuse traumatic brain injury (TBI) is known to lead to microstructural changes within both white and grey matter detected in vivo with diffusion tensor imaging (DTI). Numerous studies have shown alterations in fractional anisotropy (FA) and mean diffusivity (MD) within prominent white matter tracts, but few have linked these to changes within the grey matter with confirmation via histological assessment. This is especially important as alterations in the grey matter may be ...
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#1Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
#2Abdalla Z. Mohamed (UQ: University of Queensland)H-Index: 2
Last.Jeong Hoon Lim (NUS: National University of Singapore)H-Index: 8
view all 6 authors...
Abstract Soft robotics have come to the forefront of devices available for rehabilitation following stroke; however, objective evaluation of the specific brain changes following rehabilitation with these devices is lacking. In this study, we utilized functional Magnetic Resonance Imaging (fMRI) and dynamic causal modeling (DCM) to characterize the activation of brain areas with a MRI compatible glove actuator compared to the conventional manual therapy. Thirteen healthy volunteers engaged in a m...
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#1Kavita Venkataraman (NUS: National University of Singapore)H-Index: 10
#2Vivian C. Pun (NUS: National University of Singapore)H-Index: 3
Last.Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
view all 9 authors...
OBJECTIVE To compare central nervous system (CNS) activation in patients with and without diabetic peripheral neuropathy (DPN) during motor and motor imagery tasks and to correlate activation with functional performance. RESEARCH DESIGN AND METHODS Twenty-six participants (13 with DPN, 13 without DPN), underwent functional MRI during three tasks: ankle dorsi plantar flexion (motor task [MT]) and motor imagery tasks of walking on a smooth surface (SMIT) and rough surface (RMIT). Functional assess...
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#1Abdalla Z. Mohamed (UQ: University of Queensland)H-Index: 2
#2Paul Cumming (QUT: Queensland University of Technology)H-Index: 45
Last.Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
view all 4 authors...
Purpose Traumatic brain injury (TBI) and posttraumatic stress disorder (PTSD) have emerged as independent risk factors for an earlier onset of Alzheimer’s disease (AD), although the pathophysiology underlying this risk is unclear. Postmortem studies have revealed extensive cerebral accumulation of tau following multiple and single TBI incidents. We hypothesized that a history of TBI and/or PTSD may induce an AD-like pattern of tau accumulation in the brain of nondemented war veterans.
3 CitationsSource
#1Neha Soni (UQ: University of Queensland)
#2Abdalla Z. Mohamed (UQ: University of Queensland)H-Index: 2
Last.Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
view all 5 authors...
Traumatic brain injury (TBI) is associated with gray and white matter alterations in brain tissue. Gray matter alterations are not yet as well studied as those of the white matter counterpart. This work utilized T2-weighted structural imaging, diffusion tensor imaging (DTI), and diffusion kurtosis imaging to unveil the gray matter changes induced in a controlled cortical impact (CCI) mouse model of TBI at 5 h, 1 day, 3 days, 7 days, 14 days, and 30 days post-CCI. A cross-sectional histopathology...
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#1Abdalla Z. Mohamed (UQ: University of Queensland)H-Index: 2
#2Paul Cumming (University of Bern)H-Index: 45
Last.Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
view all 3 authors...
In August 2018, Weiner and colleagues raised a red flag concerning certain errors in the tables and figures of our article, "Amyloid pathology fingerprint differentiates post-traumatic stress disorder and traumatic brain injury. NeuroImage Clinical 2018 Jun 5;19:716-726". We have addressed this in detail in our published "Corrigendum to 'Amyloid pathology fingerprint differentiates post-traumatic stress disorder and traumatic brain injury' NeuroImage: Clinical. 19 (2018) 716-726". However, recen...
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#1Abdalla Z. MohamedH-Index: 2
#2Paul CummingH-Index: 45
Last.Fatima A. NasrallahH-Index: 16
view all 7 authors...
The authors regret to inform that a few issues were found in the published paper and therefore, we wish to submit this Corrigenda to the original article entitled ‘Amyloid pathology fingerprint differentiates post-traumatic stress disorder and traumatic brain injury’ NeuroImage: Clinical. 19 (2018) 716–726.
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#1Abdalla Z. Mohamed (UQ: University of Queensland)H-Index: 2
#2Paul Cumming (QUT: Queensland University of Technology)H-Index: 45
Last.Fatima A. Nasrallah (UQ: University of Queensland)H-Index: 16
view all 7 authors...
Introduction: Traumatic brain injury (TBI) and post-traumatic stress disorder (PTSD) are risk factors for early onset of Alzheimer's disease (AD) and may accelerate the progression rate of AD pathology. As amyloid-beta (Aβ) plaques are a hallmark of AD pathology, we hypothesized that TBI and PTSD might increase Aβ accumulation in the brain. Methods: We examined PET and neuropsychological data from Vietnam War veterans compiled by the US Department of Defense Alzheimer's Disease Neuroimaging Init...
8 CitationsSource
#1Daniel G. BlackmoreH-Index: 12
#2Fabrice R. TurpinH-Index: 7
Last.Juergen GotzH-Index: 1
view all 10 authors...
The blood-brain barrier presents a major challenge for the delivery of therapeutic agents to the brain; however, it can be transiently opened by combining low intensity ultrasound with microbubble infusion. Studies evaluating this technology have largely been performed in rodents, including models of neurological conditions. However, despite promising outcomes in terms of drug delivery and the amelioration of neurological impairments, the potential for long-term adverse effects presents a major ...
2 CitationsSource
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