Lutfu Hanoglu

Lutfu Hanoglu
Istanbul Medipol University · Department of Neurology, Faculty of Medicine

About

117
Publications
8,175
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787
Citations
Citations since 2016
90 Research Items
618 Citations
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2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150

Publications

Publications (117)
Article
Full-text available
Introduction Alzheimer's disease (AD) is neurodegenerative dementia that causes neurovascular dysfunction and cognitive impairment. Currently, 50 million people live with dementia worldwide, and there are nearly 10 million new cases every year. There is a need for relatively less costly and more objective methods of screening and early diagnosis....
Preprint
Full-text available
Background Alzheimer’s disease (AD) is associated with metabolic abnormalities linked to critical elements of neurodegeneration. We recently administrated Combined Metabolic Activators (CMA) to the AD rat model and observed that administration of CMA activated the mitochondrial functions and eventually improved the AD-associated histological parame...
Article
Full-text available
Memory storage in the brain is one of the most extensively studied subjects in neuroscience. However, due to the highly complex structure of the memory-related systems in the brain, the mystery remains unsolved. Consolidation is one of the most important parts of the memory process, and one that can be affected by numerous neurodegenerative disease...
Preprint
Full-text available
Background Brain death in Turkey was defined as death and was accepted by official and religious authorities in a relatively early period without sufficient discussion and social consensus. Thus, there is considerable distrust and hesitation about the concept of brain death and related organ donation in Turkish society. We created a sample story in...
Preprint
Full-text available
Background: Alzheimer’s disease (AD) is associated with metabolic abnormalities linked to critical elements of neurodegeneration. We recently administrated Combined Metabolic Activators (CMA) to the AD rat model and observed that administration of CMA activated the mitochondrial functions and eventually improved the AD-associated histological param...
Preprint
Background Charles Bonnet syndrome (CBS) is a prototype phenomenon for investigating complex visual hallucination. Our research focuses on resting state neural networks features of CBS patients with a comparison of patients with equally matched visual loss and healthy subjects in order to investigate the mechanism behind complex visual hallucinatio...
Article
Aim:Patients with chronic diseases were forced into lockdown due to the coronavirus disease-2019 pandemic. Extended quarantine could lead to physical inactivity and psychiatric problems. We investigated the effects of quarantine and social isolation during the pandemic on the motor and non-motor symptoms (NMS) of Parkinson’s disease (PD) patients w...
Preprint
Full-text available
The pulvinar is largest thalamic nucleus and has been subdivided into anterior pulvinar (PuA), inferior pulvinar (PuI), medial pulvinar (PuM) and, lateral pulvinar (PuL). Although the function of pulvinar is well known, its role in neurodegenerative diseases is still unclear. We aimed to examine the functional connectivity of PuA, PuI, PuM and, PuL...
Article
Full-text available
The purpose of this study was to investigate the effects of high-frequency repetitive Transcranial Magnetic Stimulation (rTMS) and aerobic exercises (AE) in addition to the pharmacological therapy (PT) in Alzheimer's Disease (AD). Twenty-seven patients with AD aged ≥ 60 years were included in the study and divided into 3 groups (rTMS, AE and contro...
Article
Full-text available
Alzheimer's disease (AD) is a progressive, neurodegenerative brain disorder that generally affects the elderly. Today, after the limited benefit of the pharmacological treatment strategies, numerous noninvasive brain stimulation techniques have been developed. Transcranial magnetic stimulation (TMS), based on electromagnetic stimulation, is one of...
Article
Full-text available
There are few studies investigating the short-term effects of Virtual Reality based Exergaming (EG) on motor and cognition simultaneously and pursue the brain functional activity changes after these interventions in patients with Parkinson’s Disease (PD). The purpose of this study was to investigate the synergistic therapeutic effects of Virtual Re...
Article
Introduction: This report examines the effects of a multimodal rehabilitation program which includes cognitive, physical, and somatosensory rehabilitation after right temporo-parietal tumor resection on cognitive, motor, somatosensory, and electrophysiological parameters. Case description: A 22-year-old patient presented with sensory loss in the...
Article
Here we tested if the reactivity of posterior resting-state electroencephalographic (rsEEG) alpha rhythms from the eye-closed to eyes-open condition may differ in patients with dementia due to Lewy Bodies (DLB) and Alzheimer's disease (ADD), as a functional probe of the dominant cortical neural synchronization mechanisms regulating the vigilance in...
Article
Full-text available
Introduction The microstate analysis is a method to convert the electrical potentials on the multi-channel electrode array to topographical electroencephalography (EEG) data. Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive method that can modulate brain networks. This study explores the pathophysiological changes through micro...
Article
Background: Corticobasal degeneration (CBD) is a rare neurological disease caused by the pathological accumulation of tau protein. The primary pathological features of CBD include progressive neurodegenerative processes resulting in remarkable frontoparietal and basal ganglia atrophy. Objective: Like in many other neurodegenerative disorders, th...
Article
Parkinson's disease with dementia (PDD) and dementia with Lewy bodies (DLB) are characterized by intracellular Lewy bodies in the brain neurons and clinical symptoms including cognitive impairment and flucations, motor symptoms, and hallucinations with some differences, namely non‐motor symptoms appear earlier in DLB over PDD patients (McKeith et a...
Article
Impairment of facial expression recognition in dementia is one of the cognitive deficits that could affect the social life of dementia patients. The severity of the facial expression recognition in different types of dementia has not been fully addressed. Previous studies showed that EEG event‐related oscillation (ERO) studies could reveal the brai...
Article
Alzheimer's disease dementia (ADD) and Parkinson's disease dementia (PDD) are the most common types of dementia. ADD and PDD have different pathophysiology and clinical profile. It is important to understand mechanisms underlying pathophysiology, clinical symptoms, and the electrophysiological differences between these two types of dementia. Event‐...
Article
The performance of facial expression recognition is affected both in neurocognitive disorders and in healthy elderly. Emotional content processing is expected to be adversely affected in dementia and as well in Parkinson's disease patients. The present study aims to compare the impaired facial expression recognition between different types of demen...
Article
The therapeutic approaches currently applied in Alzheimer's disease (AD) and similar neurodegenerative diseases are essentially based on pharmacological strategies. However, despite intensive research, the effectiveness of these treatments is limited to transient symptomatic effects, and they are still far from exhibiting a true therapeutic effect...
Article
Background Early differentiation between Alzheimer’s disease (AD) and Dementia with Lewy Bodies (DLB) is important for accurate prognosis, as DLB patients typically show faster disease progression. Cortical neural networks, necessary for human cognitive function, may be disrupted differently in DLB and AD patients, allowing diagnostic differentiati...
Article
Introduction The pre-supplementary motor area (Pre-SMA) plays a pivotal role in the control of voluntary motor control and freezing of gait (FOG) pathophysiological mechanism. Here, we aimed to modulate if the pre-SMA would have beneficial effects on motor and behavioural outcomes in freezing of gait. To test this hypothesis, we examined the left p...
Article
In the present retrospective and exploratory study, we tested the hypothesis that sex may affect cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms recorded in normal elderly (Nold) seniors and patients with Alzheimer's disease and mild cognitive impairment (ADMCI). Datasets in 69 ADMCI and 57 Nold individuals wer...
Preprint
Full-text available
The neuropathologic hallmarks of Parkinson's disease (PD) are associated with mitochondrial dysfunction and metabolic abnormalities. We have reported that the Combined Metabolic Activators (CMA), consisting of L-serine, nicotinamide riboside, N-acetyl-L-cysteine, and L-carnitine tartrate can be used in treating metabolic abnormalities. These metabo...
Preprint
Full-text available
Alzheimer’s disease (AD) is associated with metabolic abnormalities linked to critical elements of neurodegeneration. Here, we analysed the brain transcriptomics data of more than 600 AD patients using genome-scale metabolic models and provided supporting evidence of mitochondrial dysfunction related to the pathophysiologic mechanisms of AD progres...
Article
Background: In relaxed adults, staying in quiet wakefulness at eyes closed is related to the so-called resting state electroencephalographic (rsEEG) rhythms, showing the highest amplitude in posterior areas at alpha frequencies (8-13 Hz). Objective: Here we tested the hypothesis that age may affect rsEEG alpha (8-12 Hz) rhythms recorded in norma...
Article
Full-text available
To investigate a possible deterioration of the symptoms of Alzheimer’s disease (AD) patients during a quarantine period of 60 days, and the impact on caregiver burden. This study consisted of 54 individuals (36 female, 18 male) aged 60 years and over who had been diagnosed with AD. During the quarantine period, caregivers of the patients (child, sp...
Article
Background: Multiple Sclerosis (MS) is a neuroinflammatory, neurodegenerative, demyelinating disease that causes cognitive, olfactory, and other neurological dysfunctions. Radiologically Isolated Syndrome (RIS), in which only radiological findings are monitored, is accepted as the preclinical stage of demyelinating disease and is considered an imp...
Article
Repetitive Transcranial Magnetic Stimulation (rTMS) is a non-invasive neuromodulation technique which is increasingly used for cognitive impairment in Alzheimer’s Disease (AD). Although rTMS has been shown to modify Brain-Derived Neurotrophic Factor (BDNF) and oxidative stress levels in many neurological and psychiatric diseases, there is still no...
Article
Background Parkinson’s disease (PD) is characterized by non-motor symptoms (NMS) as well as by motor symptoms. Together with the impairment of cognitive functions, NMS and sleep also affect motor symptoms negatively. The aim of our study is to examine the correlation of NMS and sleep on balance in PD patients with normal cognition (PD-NC) and with...
Article
Extending Başar's theory of event-related EEG oscillations, here we hypothesize that even in quiet wakefulness, transient increases in delta rhythms may enhance global cortical arousal as revealed by the desynchronization of alpha rhythms in normal (Nold) seniors with some derangement in Alzheimer's disease dementia (ADD). Clinical and EEG datasets...
Article
In clinical routine and research, abstract thinking difficulties are often tested by assessing the Alzheimer disease (AD) patient’s ability to understand nonliteral languages. The goal of the present study was to test more specifically the processing of metaphors in AD patients to establish links between clinical observations and measures of brain...
Article
Parkinson’s disease (PD) is the second‐most common neurodegenerative disorder that affects 2–3% of the population ≥ 65 years of age and may belong to cognitive deficits and dementia in 50% of cases. Disease with Lewy Bodies (DLB) is emerging as another important cause of dementia in pathological aging. PD and DLB are both due to intra‐neuronal Lewy...
Article
Parkinson’s disease (PD) is the second‐most common neurodegenerative disorder that affects 2–3% of the population ≥ 65 years of age and may belong to cognitive deficits and dementia in 50% of cases. Disease with Lewy Bodies (DLB) is emerging as another important cause of dementia in pathological aging. PD and DLB are both due to intra‐neuronal Lewy...
Article
In normal old (Nold) and Alzheimer’s disease (AD) persons, a high cognitive reserve (CR) makes them more resistant and resilient to brain neuropathology and neurodegeneration. Here, we tested whether these effects may affect neurophysiological oscillatory mechanisms generating dominant resting state electroencephalographic (rsEEG) alpha rhythms in...
Article
Objective Here we tested if cortical sources of resting state electroencephalographic (rsEEG) rhythms may differ in sub-groups of patients with prodromal and overt dementia with Lewy bodies (DLB) as a function of relevant clinical symptoms. Methods We extracted clinical, demographic and rsEEG datasets in matched DLB patients (N = 60) and control A...
Poster
This study claims that there is shared cortical networks especially on right PFC during emotional and cognitive conflict monitoring.
Article
Objectives: Charles Bonnet Syndrome (CBS) is a rare clinical condition which has been defined as complex visual hallucinations (CVH) due to visual loss. This study investigated differences in the EEG power spectral density (PSD) and magnitude-squared coherences between patients with eye disease and hallucinations (VH+), and the control subjects wit...
Poster
In this study, we implemented tDCS and speech rehabilitation spontaneuously with post-stroke aphasia patients. Cognitive exercises with left anodal and right cathodal stimulation of perisylvian area has improving effects on language abilities.
Article
Full-text available
Corticobasal syndrome (CBS) is a rare progressive neurodegenerative disease characterized by a combination of asymmetric motor symptoms and non-motor symptoms. CBS is poorly responsive to levodopa. Non-pharmacological strategies have been found to be useful as components of a multidisciplinary therapeutic approach for patients with CBS. The purpose...
Article
Introduction Although previous evidence suggest that paracetamol decreases psychological reactivity in healthy subjects, there is still no confirmed correlation between the empathy scores and brain activity in healthy and headache patients after paracetamol treatment. Material and methods The study group included 16 patients with tension-type head...
Article
Compared with Alzheimer’s disease (AD), Parkinson’s disease (PD) shows peculiar clinical manifestations related to vigilance (i.e., executive cognitive deficits and visual hallucinations) that may be reflected in resting state electroencephalographic (rsEEG) rhythms. To test this hypothesis, clinical and rsEEG rhythms in age-, sex-, and education-m...
Article
Full-text available
Transcutaneous Electrical Nerve Stimulation (TENS) is used not only in the treatment of pain but also in the examination of sensory functions. With aging, there is decreased sensitivity to somatosensory stimuli. It is essential to examine the effect of TENS application on the sensory functions in the brain by recording the spontaneous electroenceph...
Article
Facial Expression (FE) recognition is a major marker of emotional ability. Behavioral studies show that FE recognition ability decreases with aging. Studying how event-related brain oscillations change with normal aging is important to better understand the underlying mechanisms of emotional processes. The aim of this study is to investigate change...
Article
We have evaluated an 82 years old PD patient who has acutely developed VH secondary to acute visual loss that was associated with increased electroencephalographic activity in the gamma range over the parietal, occipital and frontal regions. In this respect, we have tested the therapeutic effect of occipital lobe oriented rTMS application and its e...
Article
Full-text available
Objectives:Hypoxic encephalopathy (HE) after cardiac arrest is a clinical condition that can cause severe neurological sequelae and death. It is important to determine the prognosis in patients with HE for follow up and developing future treatments in the long term. Our aim was to investigate the effects of age, gender, hypothermia, lesion site in...
Preprint
Characterising brain activity at rest is of paramount importance to our understanding both of general principles of brain functioning and of the way brain dynamics is affected in the presence of neurological or psychiatric pathologies. We measured the time-reversal symmetry of spontaneous electroencephalographic brain activity recorded from three g...
Article
Behavioral studies have shown that the recognition of facial expressions may be impaired in patients with Alzheimer's disease (AD). The identification and recognition of a facial expression might be represented by event-related brain oscillations. The present study aims to analyze EEG event-related oscillations and determine the electrophysiologica...
Article
Background Studies on Event Related EEG Brain Oscillations presented essential results on the understanding of cognitive brain function and cognitive decline in different pathologies. Event related oscillatory dynamics in Parkinson’s disease (PD) have not been studied comprehensively. In the last three years, our group aimed to fulfill this critica...
Article
Background Event-related beta responses are related to the visual cognitive process. Beta phase-locking had decreased in subjects with cognitive deficits. Parkinson’s disease dementia (PDD) and dementia with Lewy bodies (DLB) have similar pathophysiology and have different clinical symptoEEG event-related responses in neurodegenerative diseases are...
Article
Introduction Subacute sclerosing panencephalitis (SSPE) is a progressive encephalitis, that rarely affects adults. The brain damage occurs in about 5 years after the patient is infected by measles virus. The survival rate is low. Spontaneous alpha activity is a sign of healthy brain. Here we aimed to present electroencephalography (EEG) power spect...
Article
Objectives: The present study aims to evaluate the amplitude and latency of event-related potentials (ERPs) P100, N170, VPP and N230 in individuals with Alzheimer's disease (AD) compared to healthy elderly controls, using a passive viewing task of emotional facial expressions. Methods: Twenty-four individuals with mild to moderate AD and 23 demo...
Article
Full-text available
Background and Aim Recent data have shown that olfactory dysfunction is strongly related to Alzheimer’s Disease (AD) that is often preceded by olfactory deficits suggesting that olfactory dysfunction might represent an early indicator of future cognitive in prediabetes. Methods We have applied to a group of normal (n=15), prediabetic (n=16) and ty...
Poster
Full-text available
The Effect of Lateral Parietal Cortex TMS Stimulation on Memory Functions and Brain Connection in Alzheimer Patients
Article
Previous evidence has shown different resting-state eyes-closed electroencephalographic delta (<4 Hz) and alpha (8–10.5 Hz) source connectivity in subjects with dementia due to Alzheimer's (ADD) and Lewy body (DLB) diseases. The present study tested if the same differences may be observed in the prodromal stages of mild cognitive impairment (MCI)....
Article
Full-text available
Repetitive transcranial magnetic stimulation (rTMS) has gained interest as a non-invasive treatment for stroke based on the data promoting its effects on functional recovery. However, the exact action mechanisms by which the rTMS exert beneficial effects in cellular and molecular aspect are largely unknown. To elucidate the effects of high- and low...
Data
List of qPCR primers used. Primer sequences were obtained from Harvard Primerbank.
Poster
Aim: Behavioral Variant of Frontotemporal Dementia (bvFTD) is characterized by progressive behavioral abnormalities, personality changes, impaired social behavior, and impaired executive functions. In addition to these features, since the first diagnostic criteria of bvFTD were proposed by Neary et al. in 1998, eating abnormalities and overeating a...
Conference Paper
Objective: Parkinson’s disease dementia (PDD) and dementia with Lewy bodies (DLB) have similar pathophysiology. The clinical symptoms of these two disease are different. Investigation of EEG event-related responses in PDD and DLB is significant to understand the mechanisms underlying the pathophysiology. The aim of the present study was to investig...
Article
Full-text available
Background Antibiotic therapies targeting multiple regenerative mechanisms have the potential for neuroprotective effects, but the diversity of experimental strategies and analyses of non-standardised therapeutic trials are challenging. In this respect, there are no cases of successful clinical application of such candidate molecules when it comes...
Article
Full-text available
After we have obtained the signed release from the patient, we present a 37‐year‐old man with erythema‐like lesions which were developed after two different headache episodes after they did not respond to sumatriptan treatment and gradually resolved over the next few days. This article is protected by copyright. All rights reserved.
Article
Background and objective: Charles Bonnet Syndrome (CBS) has been defined as complex visual hallucinations (CVH) due to visual loss. The underlying mechanism of CBS is not clear and the underlying pathophysiology of the visual hallucinations in CBS patients and pure visually impaired patients is still not clear. Methods: In our study, we have sca...
Article
We hypothesized that dopamine neuromodulation might affect cortical excitability in Parkinson's disease (PD) patients set in quiet wakefulness, as revealed by resting state eyes-closed electroencephalographic (rsEEG) rhythms at alpha frequencies (8–12 Hz). Clinical and rsEEG rhythms in PD with dementia (N = 35), PD with mild cognitive impairment (N...
Article
Rivastigmine is one of the approved effective treatments for Parkinson's Disease Dementia (PDD). Increase of upper extremity resting tremor is a common adverse effect seen in patients administered rivastigmine and is usually mild, not leading to treatment withdrawal. Rivastigmine patch was given to both of our patients diagnosed with PDD and they s...
Article
Background: The causal link between upper limb restlessness and cervical disc prolapsus is still unclear, and the exact role of the spinal cord in the origination of limb restlessness is not yet completely understood. Methods: Here we have evaluated the therapeutic effect of pramipexole (0.5 mg/kg) in a 47-year old male with cervical disc prolap...
Article
The present study tested the hypothesis that cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and dementia with Lewy bodies (DLBMCI) as compared to cognitively...
Article
Full-text available
Objective: This study tested the hypothesis that markers of functional cortical source connectivity of resting state eyes-closed electroencephalographic (rsEEG) rhythms may be abnormal in subjects with mild cognitive impairment due to Alzheimer's (ADMCI) and Parkinson's (PDMCI) diseases compared to healthy elderly subjects (Nold). Methods: rsEEG...
Article
Previous evidence showed abnormal posterior sources of resting-state delta (<4 Hz) and alpha (8-12 Hz) rhythms in patients with Alzheimer's disease with dementia (ADD), Parkinson's disease with dementia (PDD), and Lewy body dementia (DLB), as cortical neural synchronization markers in quiet wakefulness. Here, we tested the hypothesis of additional...
Article
The aim of this retrospective and exploratory study was that the cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms might reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and Parkinson's disease (PDMCI) as comp...
Article
Sleep is one of the important factors that play a key role in AD pathogenesis. However, it is still unclear whether poor quality sleep may overlap with sleep disturbances in the underlying dysfunctional mechanisms of amyloid beta (Aβ) clearance metabolism. Here, we aimed to evaluate the current evidence on the role of sleep deprivation in amyloid b...
Article
The aim of this retrospective exploratory study was that resting state eyes-closed electroencephalographic (rsEEG) rhythms might reflect brain arousal in patients with dementia due to Alzheimer's disease dementia (ADD), Parkinson's disease dementia (PDD), and dementia with Lewy body (DLB). Clinical and rsEEG data of 42 ADD, 42 PDD, 34 DLB, and 40 h...
Article
Introduction: Transcranial focused ultrasound (tFUS) is a novel technique that can noninvasively modulate the cortical function. Moreover, there are rapidly replicating evidence suggesting the role of tFUS for targeted neuroprotective drug delivery by increasing the permeability of the central nervous system barrier that results with increased neu...
Article
Background: Charles Bonnet Syndrome (CBS) is a rare clinical condition which is characterized by complex hallucinations in visually impaired patients. The pathophysiology of this disorder remains largely unknown, and there is still no proven treatment for this disease. In our study, we aimed to investigate the neural activity through Electroenceph...