1
|
Saridas F, Hojjati F, Alizada S, Lazrak S, Koc ER, Turan OF. Effects of disease-modifying therapies on remyelination in multiple sclerosis; evaluation via visual evoked potential test. Mult Scler Relat Disord 2024; 91:105850. [PMID: 39232395 DOI: 10.1016/j.msard.2024.105850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 08/12/2024] [Accepted: 08/26/2024] [Indexed: 09/06/2024]
Abstract
BACKGROUND Assessment of the visual pathway, which is frequently affected by MS, provides the opportunity to measure the remyelination of acute and chronic MS lesions in vivo and non-invasively. VEP can be used in this context. Amplitude is a parameter of axonal loss, whereas latency is an in vivo biomarker of myelin repair. This study aimed to evaluate DMT's neuroprotective and pro-remyelinating potential by evaluating VEP latency and amplitude in MS patients. MATERIALS AND METHODS A total of 74 patients with relapsing MS who had no evidence of optic neuritis were included in the study. Patient data were retrospectively analyzed and recorded. In the VEP test, latency above 118 ms and amplitude below 5.0 μV were considered abnormal. Classified according to DMTs (injectables, teriflunomide, dimethyl fumarate, fingolimod, cladribine, and alemtuzumab). Visual evoked potential tests, clinical features, and cerebrospinal fluid examinations were evaluated by three independent neurologists and one clinical neurophysiologist. RESULTS The mean age at diagnosis was 29.2 ± 9.01, and the mean age at first VEP was 34.97 ± 10.64. In women, latency was lower, and amplitude was higher. The mean differences in latency and amplitude were, respectively, latency prolonged by 0.7 ms on the right and 0.5 ms on the left, and amplitude increased by 0.6 μV on the right and 0.37 μV on the left. However, these changes were not statistically significant. Latency worsening was more prominent in those with longer disease duration (p = 0.011). Those with amplitude or latency worsening had higher EDSS (p = 0.016 and 0.013, respectively). DMTs did not affect these changes. CONCLUSION Prolonged latency is associated with a long disease duration. Deterioration in both amplitude and latency is evident in high EDSS. These results may be an indirect consequence of axonal degeneration dominating remyelination. DMTs do not ameliorate impaired remyelination and neurodegeneration but seem to be sufficient for short-term maintenance of the current state.
Collapse
Affiliation(s)
- Furkan Saridas
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| | - Farid Hojjati
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| | - Shanay Alizada
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| | - Sarra Lazrak
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| | - Emine Rabia Koc
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| | - Omer Faruk Turan
- Bursa Uludağ University Medicine Faculty, Department of Neurology, Türkiye.
| |
Collapse
|
2
|
Liu C, Yuan M, He S. Patients with Parkinson's disease demonstrate deficits in visual-spatial memory in the Chinese Visual Retention Test. Brain Behav 2024; 14:e3345. [PMID: 38376030 PMCID: PMC10757893 DOI: 10.1002/brb3.3345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 11/11/2023] [Accepted: 11/18/2023] [Indexed: 02/21/2024] Open
Abstract
OBJECTIVE We aimed to explore the existence of visual-spatial memory deficit in patients with Parkinson's disease (PD) without dementia in the Chinese Visual Retention Test, as well as to assess whether their performance is related to age, duration, severity, stage, and dopamine (DA) dose. METHODS Forty-two patients with PD and 30 healthy controls were included in our study. The Chinese Visual Retention Test was used to evaluate the visual-spatial memory of the subjects. Parameters of the Chinese Visual Retention Test were compared between the two groups. Correlation analysis and multiple linear regression analysis were used to explore the associations of the Chinese Visual Retention Test with age, duration, severity, stage of PD, and DA dose. RESULTS Three correct scores in the Chinese Visual Retention Test were all significantly lower in the PD group than in the control group. The total error scores, error scores of omissions, deformation, and persistence in the PD group were significantly higher than those in the control group. Correlation analysis showed the total error scores in the Chinese Visual Retention Test was positively correlated with UPDRS III score and H-Y classification. Multiple linear regression analysis showed that the total error scores in the Chinese Visual Retention Test were associated with the UPDRS III score and H-Y classification. CONCLUSION Patients with PD without dementia had visual-spatial memory deficits in the Chinese Visual Retention Test which may be affected by the severity and clinical stage of PD.
Collapse
Affiliation(s)
- Chunyan Liu
- Department of Critical Care MedicineHuzhou Central HospitalHuzhouChina
| | - Meng Yuan
- Department of Critical Care MedicineHuzhou Central HospitalHuzhouChina
| | - Songbin He
- Department of NeurologyZhoushan Hospital, Wenzhou Medical UniversityZhoushanChina
| |
Collapse
|
3
|
Fabregat‐Sanjuan A, Pàmies‐Vilà R, Rigo‐Vidal A, Pascual‐Rubio V. Comparison of electrode position marking procedures on the cranial surface. Brain Behav 2023; 13:e3187. [PMID: 37534627 PMCID: PMC10570493 DOI: 10.1002/brb3.3187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/28/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023] Open
Abstract
INTRODUCTION The study aimed to compare the conventional method of electrode marking with a new system, EPlacement, to improve accuracy and reduce the time burden on health care professionals. METHODS Ten health care professionals marked mannequin heads and adult volunteers using both methods. Time, accuracy, and usability of each method were analyzed. Three neurophysiological diagnostic tests were performed on mannequin heads: reversal pattern visual evoked potential (three electrodes required); somatosensory evoked potentials from the upper and lower extremities (five electrodes required); and standard intraoperative neurophysiological monitoring for spine surgery (nine electrodes required). Precision scanning of the mannequins with structured light and a printed hull were used to determine the actual locations of the electrodes of the 10/20 system. RESULTS The new method based on the EPlacement device represents an improvement on conventional tape measure (TM) marking and may be considered within the group of advanced methods such as navigation systems since it leads to improvements of 34% (1.7 mm) for electrode positions in the Nasion-Inion and Left tragus-Right tragus lines and 77% (12.5 mm) for electrode positions using the approximate method. It reduces the time spent per test by an average of 1 min compared to the TM method. Health care staff survey results show a positive feedback regarding usability of the new method. CONCLUSIONS The study showed that the EPlacement device improves accuracy, reduces time, and is easy to use compared to the conventional method of electrode marking. The EPlacement method can facilitate the complex task of electrode marking and ultimately contribute to improved patient outcomes. It has the potential to be widely accepted and implemented in clinical practice.
Collapse
Affiliation(s)
- Albert Fabregat‐Sanjuan
- FUNCMAT, Mechanical Engineering DepartmentUniversitat Rovira i VirgiliTarragonaSpain
- NeuroÈpia, Clinical Neurophysiology DepartmentInstitut d'Investigació Sanitària Pere Virgili, Hospital Universitari Sant Joan de ReusTarragonaSpain
| | - Rosa Pàmies‐Vilà
- BIOMEC, Mechanical Engineering DepartmentUniversitat Politècnica de CatalunyaBarcelonaSpain
- NeuroÈpia, Clinical Neurophysiology DepartmentInstitut d'Investigació Sanitària Pere Virgili, Hospital Universitari Sant Joan de ReusTarragonaSpain
| | - Agnès Rigo‐Vidal
- NeuroÈpia, Clinical Neurophysiology DepartmentInstitut d'Investigació Sanitària Pere Virgili, Hospital Universitari Sant Joan de ReusTarragonaSpain
| | - Vicenç Pascual‐Rubio
- NeuroÈpia, Clinical Neurophysiology DepartmentInstitut d'Investigació Sanitària Pere Virgili, Hospital Universitari Sant Joan de ReusTarragonaSpain
| |
Collapse
|
4
|
Rajendran D, Bandhu R, Gautam S, K Dhamija R, Mondal S. Auditory Evoked P300 Potential in Patients With Parkinson's Disease. Cureus 2023; 15:e45933. [PMID: 37885554 PMCID: PMC10599456 DOI: 10.7759/cureus.45933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is the second most common neurodegenerative disorder. Though the cardinal features of PD are motor symptoms, it is also associated with many non-motor symptoms, such as cognitive impairment, autonomic dysfunction, sleep disorders, and depression, which could affect the quality of life. Early identification of PD's non-motor signs can aid in the diagnosis of PD. The current research aimed to assess the neurophysiological changes in PD patients using auditory evoked P300 potential and to determine the possible correlation between P300 wave components and cognitive impairment. MATERIALS AND METHODS This cross-sectional research involved 32 idiopathic PD patients. The neurophysiological changes in PD patients were studied using auditory evoked P300 potential and the obtained data were compared with normative data. The patient's cognitive status was scored using the Montreal Cognitive Assessment (MoCA) questionnaire and they were divided into two groups: the patients with normal cognition and the patients with impaired cognition. RESULTS The participants showed a significant decrease in P300 amplitude (p = 0.000) but no change in P300 latency when compared to normative data using the Wilcoxon rank sum test. Also, there was a positive correlation between the MoCA score and P300 amplitude (p < 0.05), indicating that if cognition is impaired, P300 amplitude would also be reduced. There was a significant difference between PD patients with impaired cognition and patients with normal cognition in the P300 amplitude at Cz (p = 0.001) and Fz (p = 0.003) when the Mann-Whitney U test was used. These findings indicate that it is possible to notice changes in the P300 wave components among PD patients when their cognition is impaired. CONCLUSION Auditory evoked P300 potentials can be used to objectively evaluate cognition in PD patients and by starting supportive therapy, the quality of life for PD patients can be improved.
Collapse
Affiliation(s)
- Dhivya Rajendran
- Department of Physiology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, IND
| | - Rajiv Bandhu
- Department of Physiology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, IND
| | - Sujata Gautam
- Department of Physiology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, IND
| | - Rajinder K Dhamija
- Department of Neurology, Institute of Human Behaviour and Allied Sciences, New Delhi, IND
| | - Sunita Mondal
- Department of Physiology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, IND
| |
Collapse
|
5
|
Großmann W. Listening with an Ageing Brain - a Cognitive Challenge. Laryngorhinootologie 2023; 102:S12-S34. [PMID: 37130528 PMCID: PMC10184676 DOI: 10.1055/a-1973-3038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hearing impairment has been recently identified as a major modifiable risk factor for cognitive decline in later life and has been becoming of increasing scientific interest. Sensory and cognitive decline are connected by complex bottom-up and top-down processes, a sharp distinction between sensation, perception, and cognition is impossible. This review provides a comprehensive overview on the effects of healthy and pathological aging on auditory as well as cognitive functioning on speech perception and comprehension, as well as specific auditory deficits in the 2 most common neurodegenerative diseases in old age: Alzheimer disease and Parkinson syndrome. Hypotheses linking hearing loss to cognitive decline are discussed, and current knowledge on the effect of hearing rehabilitation on cognitive functioning is presented. This article provides an overview of the complex relationship between hearing and cognition in old age.
Collapse
Affiliation(s)
- Wilma Großmann
- Universitätsmedizin Rostock, Klinik und Poliklinik für Hals-Nasen-Ohrenheilkunde,Kopf- und Halschirurgie "Otto Körner"
| |
Collapse
|
6
|
Batum M, Ak AK, Arı MS, Mayali H, Kurt E, Selçuki D. Evaluation of the visual system with visual evoked potential and optical coherence tomography in patients with idiopathic Parkinson's disease and with multiple system atrophy. Doc Ophthalmol 2022; 145:99-112. [PMID: 35881261 DOI: 10.1007/s10633-022-09887-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 06/23/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND In addition to motor findings, non-motor findings including alterations in visual acuity, decrease in blink reflex, and pupil reactivity cause the impaired quality of life in idiopathic Parkinson's disease (PD) and multiple system atrophy (MSA). Our study aimed to examine possible latency and amplitude changes in pattern visual evoked potentials (pVEP) along with retinal and macular changes in optical coherence tomography (OCT) in PD and MSA groups. We also intended to investigate whether any OCT parameters could be a biomarker for Parkinson's or MSA. METHODS Our study included 50 patients with PD, 15 with MSA, and 50 healthy control subjects. All patients in the study underwent neurological and ophthalmological examination and investigations of OCT to measure the retinal and macular thickness and pVEP to assess visual pathways. RESULTS When PD, MSA, and control groups were compared, a significant difference was found in all retinal thickness values in average, nasal, and superior retinal nerve fiber thickness (pRNFL), and in all macular thickness values except nasal outer and inferior outer quadrants and in ganglion cell complex (GCC) thicknesses (p < 0.05). Moreover, a significant difference was found in N75, P100, and N145 latencies and N75-P100 amplitude (p < 0.05). The thickness of both pRNFL, inner and outer macular quadrants, was thinner in the MSA group than in PD but GCC thickness was thinner in PD group. CONCLUSIONS The present study compared pVEP and OCT parameters in PD and MSA groups. It was concluded that pVEP and OCT examinations were of importance in that they were easily accessible, affordable, noninvasive biomarkers that might be used in early periods and progression of the disease and in follow-up.
Collapse
Affiliation(s)
- Melike Batum
- Department of Neurology, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey.
| | - Ayşın Kısabay Ak
- Department of Neurology, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey
| | - Mehmet Semih Arı
- Department of Neurology, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey
| | - Hüseyin Mayali
- Department of Eye Diseases, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey
| | - Emin Kurt
- Department of Eye Diseases, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey
| | - Deniz Selçuki
- Department of Neurology, Celal Bayar University Medical School Hafsa Sultan Hospital, Manisa, Turkey
| |
Collapse
|
7
|
Nikmanesh N, Sarani EM, Khazraei S, Petramfar P, Ostovan VR. Diagnostic accuracy of brain stem auditory evoked response in distinguishing drug-induced parkinsonism from Parkinson'sdisease. Neurophysiol Clin 2021; 51:524-532. [PMID: 34764016 DOI: 10.1016/j.neucli.2021.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/14/2021] [Accepted: 10/14/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES Brainstem auditory evoked response (BAER) is a non-invasive modality that can be used to investigate brainstem neuronal function in movement disorders. The differentiation between drug-induced parkinsonism (DIP) and Parkinson's disease (PD) can be very challenging. Although PD and DIP to some extent display similar clinical symptoms, the underlying pathophysiologic mechanisms are entirely different. Given these differences in pathogenesis, and the diagnostic utility of BAER for detecting brainstem function, BAER may help to distinguish between PD and DIP. This study aimed to assess the accuracy and predictive values of BAER parameters in differentiating DIP from PD. METHODS We prospectively studied143 participants classified within three groups, including 50 controls, 57 PD, and 36 DIP. BAER was performed on all patients in the study. Patients in the DIP group were followed up for at least one year after discontinuation of the causative drug and examined for final diagnosis. We compared BAER latencies of the three groups and measured sensitivity, specificity, predictive values, likelihood ratios, and accuracy of BAER in diagnosing DIP. RESULT Waves V, I-V, and III-V latencies were significantly prolonged among the PD patients compared to the DIP and the control group; however, there were no significant differences in BAER latencies between the DIP and the control group. Waves V and I-V latencies revealed the highest accuracy (86% and 79%, respectively) in distinguishing DIP from PD with high negative predictive value(89% and 83%, respectively) as well as a high negative likelihood ratio (0.2and 0.3, respectively). CONCLUSION This study showed that waves V and I-V latencies are significantly prolonged in PD patients compared to those with DIP, consistent with the proposed mechanisms of neurodegeneration in PD, particularly in the midbrain and pons. Consequently, BAER could be used as a useful diagnostic tool for differentiating DIP from PD.
Collapse
Affiliation(s)
- Najmeh Nikmanesh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ebrahim Moghimi Sarani
- Research Center for Psychiatry and Behavioral Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Samaneh Khazraei
- Department of Psychiatry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Peyman Petramfar
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Vahid Reza Ostovan
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran.
| |
Collapse
|
8
|
Ampar N, Mehta A, Mahale RR, Javali M, Pradeep R, Acharya P, Srinivasa R. Electrophysiological Evaluation of Audiovestibular Pathway Dysfunction in Parkinson's Disease and Its Correlates: A Case Control Study. Ann Indian Acad Neurol 2021; 24:531-535. [PMID: 34728946 PMCID: PMC8513948 DOI: 10.4103/aian.aian_1011_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/29/2020] [Accepted: 12/04/2020] [Indexed: 11/16/2022] Open
Abstract
Background: Parkinson's disease (PD) is associated with brainstem dysfunction causing non-motor symptoms. Vestibular evoked myogenic potential (VEMP) and brainstem auditory evoked potential (BAEP) are electrophysiological tests to assess the vestibular and auditory pathways in the brainstem. Objectives: To study the abnormalities of cervical VEMP (cVEMP) and BAEP in PD and to correlate the findings with the symptoms related to brainstem involvement. Patients and Methods: cVEMP and BAEP were recorded in 25 PD patients and compared 25 age matched controls. The PD patients were assessed with the following clinical scales: REM Sleep Disorder Screening Questionnaire (RBD-SQ), Epworth Sleepiness Scale (ESS), mini-BESTest, Geriatric Depression Scale (GDS-15) and MMSE (Mini-mental state examination). The P13 and N23 peak latencies and the P13/N23 amplitude of cVEMP, the latencies of waves I, III and V, and the inter-peak latencies (IPL) of waves I-III, III-V and I-V of BAEP were measured. Results: The PD patients showed prolonged latencies and reduced amplitude in cVEMP responses. They had abnormal BAEP in the form of prolonged absolute latencies of wave V, followed by wave III and I–V IPL with no significant difference in waves I and I–III IPL. The cVEMP abnormality was correlated directly with RBD-SQ and inversely with mini-BESTest scores. There were no correlations between cVEMP/BAEP abnormality and disease severity, GDS-15, ESS and MMSE. Conclusion: PD is associated with cVEMP and BAEP abnormalities that suggest auditory and vestibular pathway dysfunction in the brainstem and cVEMP correlates with the symptoms of brainstem degeneration like RBD and postural instability.
Collapse
Affiliation(s)
- Nikith Ampar
- Department of Neurology, Ramaiah Medical College, Bangalore, India
| | - Anish Mehta
- Department of Neurology, Ramaiah Medical College, Bangalore, India
| | - Rohan R Mahale
- Department of Neurology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India
| | - Mahendra Javali
- Department of Neurology, Ramaiah Medical College, Bangalore, India
| | - R Pradeep
- Department of Neurology, Ramaiah Medical College, Bangalore, India
| | | | | |
Collapse
|
9
|
Li S, Cheng C, Lu L, Ma X, Zhang X, Li A, Chen J, Qian X, Gao X. Hearing Loss in Neurological Disorders. Front Cell Dev Biol 2021; 9:716300. [PMID: 34458270 PMCID: PMC8385440 DOI: 10.3389/fcell.2021.716300] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/23/2021] [Indexed: 12/11/2022] Open
Abstract
Sensorineural hearing loss (SNHL) affects approximately 466 million people worldwide, which is projected to reach 900 million by 2050. Its histological characteristics are lesions in cochlear hair cells, supporting cells, and auditory nerve endings. Neurological disorders cover a wide range of diseases affecting the nervous system, including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), autism spectrum disorder (ASD), etc. Many studies have revealed that neurological disorders manifest with hearing loss, in addition to typical nervous symptoms. The prevalence, manifestations, and neuropathological mechanisms underlying vary among different diseases. In this review, we discuss the relevant literature, from clinical trials to research mice models, to provide an overview of auditory dysfunctions in the most common neurological disorders, particularly those associated with hearing loss, and to explain their underlying pathological and molecular mechanisms.
Collapse
Affiliation(s)
- Siyu Li
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Cheng Cheng
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Ling Lu
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xiaofeng Ma
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
| | - Xiaoli Zhang
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Ao Li
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Jie Chen
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xiaoyun Qian
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| | - Xia Gao
- Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
- Research Institute of Otolaryngology, Nanjing, China
| |
Collapse
|
10
|
Apathy and Anhedonia: Clinical and Neurophysiological Assessment of a Romanian Cohort. Brain Sci 2021; 11:brainsci11060729. [PMID: 34072624 PMCID: PMC8229756 DOI: 10.3390/brainsci11060729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/23/2021] [Accepted: 05/28/2021] [Indexed: 11/30/2022] Open
Abstract
Background: Patients with Parkinson’s disease (PD) often have, besides the characteristic motor manifestations, a wide variety of non-motor symptoms. These include apathy and anhedonia, common issues in PD, which can be quantified with the help of evaluation scales recommended by the literature. There are sensory non-motor manifestations of PD, some of which are easy to detect through electrophysiological studies. Our aim was to investigate the possible association of apathy and anhedonia with the severity of the motor status in a sample of PD patients in Romania. We also examined the prevalence of latency changes in the P100 wave of visual evoked potentials (VEPs) and how they correlated with motor status, apathy, and anhedonia in PD patients. Methods: Thirty-four patients with PD participated in this study. All were assessed for motor status using the Unified Parkinson’s Disease Rating Scale (UPDRS) and were rated on the Hoehn and Yahr scales. The presence and severity of apathy and anhedonia were assessed using the Apathy Evaluation Scale (AES), the Dimensional Apathy Scale (DAS), the Lille Apathy Rating Scale (LARS), and the Snaith–Hamilton Pleasure Scale (SHAPS). The latency of the P100 wave of the VEP was measured in all the patients. Results: Apathy and anhedonia were common among the patients with PD (35% and 58.8%, respectively). The presence of apathy/anhedonia was correlated with the severity of motor symptoms, as assessed using the UPDRS scale (p < 0.001), and with the stage of the disease according to the Hoehn and Yahr scale (p < 0.001). A prolonged latency of the P100 wave of the VEP was observed among apathetic (p < 0.001)/anhedonic (p < 0.01) patients and those with increased disease severity (p < 0.001). Conclusion: Apathy and anhedonia are common in PD and may correlate with the severity of motor symptoms. There may be visual impairment in these patients, evidenced by a prolonged P100 latency, which correlates with the severity of disease. Significance: Scales for assessing apathy and anhedonia, as well as measuring VEP latency, could be useful in assessing the severity of disease.
Collapse
|
11
|
De Groote E, Bockstael A, Botteldooren D, Santens P, De Letter M. Evaluation of multi-feature auditory deviance detection in Parkinson's disease: a mismatch negativity study. J Neural Transm (Vienna) 2021; 128:645-657. [PMID: 33895941 DOI: 10.1007/s00702-021-02341-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 04/19/2021] [Indexed: 12/13/2022]
Abstract
Behavioral studies on auditory deviance detection in patients with Parkinson's disease (PD) have reported contradictory results. The primary aim of this study was to investigate auditory deviance detection of multiple auditory features in patients with PD by means of objective and reliable electroencephalographic (EEG) measurements. Twelve patients with early-stage PD and twelve age- and gender-matched healthy controls (HCs) were included in this study. Patients with PD participated without their regular dopaminergic medication. All subjects underwent an audiometric screening and performed a passive multi-feature mismatch negativity (MMN) paradigm. Repeated-measures analysis of variance (ANOVA) demonstrated no significant differences between patients with PD and HCs regarding MMN mean amplitude and latency for frequency, duration and gap deviants. Nevertheless, a trend towards increased MMN mean amplitude and latency was found in response to intensity deviants in patients with PD compared to HCs. Increased intensity MMN amplitude may indicate that more neural resources are allocated to the processing of intensity deviances in patients with PD compared to HCs. The interpretation of this intensity-specific MMN alteration is further discussed in the context of a compensatory mechanism for auditory intensity processing and involuntary attention switching in PD.
Collapse
Affiliation(s)
- Evelien De Groote
- Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, C. Heymanslaan 10, 9000, Ghent, Belgium.
| | - Annelies Bockstael
- Department of Information Technology, WAVES Research Group, Ghent University, Technologiepark Zwijnaarde 126, 9052, Ghent, Belgium
| | - Dick Botteldooren
- Department of Information Technology, WAVES Research Group, Ghent University, Technologiepark Zwijnaarde 126, 9052, Ghent, Belgium
| | - Patrick Santens
- Department of Neurology, Ghent University Hospital, C. Heymanslaan 10, 9000, Ghent, Belgium
| | - Miet De Letter
- Department of Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Ghent University, C. Heymanslaan 10, 9000, Ghent, Belgium
| |
Collapse
|
12
|
Indrieri A, Pizzarelli R, Franco B, De Leonibus E. Dopamine, Alpha-Synuclein, and Mitochondrial Dysfunctions in Parkinsonian Eyes. Front Neurosci 2020; 14:567129. [PMID: 33192254 PMCID: PMC7604532 DOI: 10.3389/fnins.2020.567129] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/22/2020] [Indexed: 12/21/2022] Open
Abstract
Parkinson’s disease (PD) is characterized by motor dysfunctions including bradykinesia, tremor at rest and motor instability. These symptoms are associated with the progressive degeneration of dopaminergic neurons originating in the substantia nigra pars compacta and projecting to the corpus striatum, and by accumulation of cytoplasmic inclusions mainly consisting of aggregated alpha-synuclein, called Lewy bodies. PD is a complex, multifactorial disorder and its pathogenesis involves multiple pathways and mechanisms such as α-synuclein proteostasis, mitochondrial function, oxidative stress, calcium homeostasis, axonal transport, and neuroinflammation. Motor symptoms manifest when there is already an extensive dopamine denervation. There is therefore an urgent need for early biomarkers to apply disease-modifying therapeutic strategies. Visual defects and retinal abnormalities, including decreased visual acuity, abnormal spatial contrast sensitivity, color vision defects, or deficits in more complex visual tasks are present in the majority of PD patients. They are being considered for early diagnosis together with retinal imaging techniques are being considered as non-invasive biomarkers for PD. Dopaminergic cells can be found in the retina in a subpopulation of amacrine cells; however, the molecular mechanisms leading to visual deficits observed in PD patients are still largely unknown. This review provides a comprehensive analysis of the retinal abnormalities observed in PD patients and animal models and of the molecular mechanisms underlying neurodegeneration in parkinsonian eyes. We will review the role of α-synuclein aggregates in the retina pathology and/or in the onset of visual symptoms in PD suggesting that α-synuclein aggregates are harmful for the retina as well as for the brain. Moreover, we will summarize experimental evidence suggesting that the optic nerve pathology observed in PD resembles that seen in mitochondrial optic neuropathies highlighting the possible involvement of mitochondrial abnormalities in the development of PD visual defects. We finally propose that the eye may be considered as a complementary experimental model to identify possible novel disease’ pathways or to test novel therapeutic approaches for PD.
Collapse
Affiliation(s)
- Alessia Indrieri
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Institute for Genetic and Biomedical Research, National Research Council, Milan, Italy
| | - Rocco Pizzarelli
- Center for Life Nanoscience, Istituto Italiano di Tecnologia, Rome, Italy
| | - Brunella Franco
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Medical Genetics, Department of Translational Medical Science, University of Naples "Federico II", Naples, Italy
| | - Elvira De Leonibus
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Institute of Biochemistry and Cellular Biology, National Research Council, Rome, Italy
| |
Collapse
|
13
|
De Groote E, De Keyser K, Santens P, Talsma D, Bockstael A, Botteldooren D, De Letter M. Future Perspectives on the Relevance of Auditory Markers in Prodromal Parkinson's Disease. Front Neurol 2020; 11:689. [PMID: 32765404 PMCID: PMC7378374 DOI: 10.3389/fneur.2020.00689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 06/09/2020] [Indexed: 11/13/2022] Open
Abstract
Research on auditory processing in Parkinson's disease (PD) has recently made substantial progress. At present, evidence has been found for altered auditory processing in the clinical stage of PD. The auditory alterations in PD have been demonstrated with low-cost and non-invasive assessments that are already used in routine clinical practice. Since auditory alterations have been reported early in disease progression, it would be highly relevant to investigate whether auditory markers could be provided in the prodromal stage of PD. In addition, auditory alterations in early stage PD might be modulated by dopaminergic medication. Therefore, the aim of this review is (1) to summarize the literature on auditory processing in PD with a specific focus on the early disease stages, (2) to give future perspectives on which audiological and electrophysiological measurements could be useful in the prodromal stage of PD and (3) to assess the effect of dopaminergic medication on potential auditory markers in the prodromal stage of PD.
Collapse
Affiliation(s)
- Evelien De Groote
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
| | - Kim De Keyser
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
| | - Patrick Santens
- Department of Neurology, Ghent University Hospital, Ghent, Belgium
| | - Durk Talsma
- Department of Experimental Psychology, Ghent University, Ghent, Belgium
| | - Annelies Bockstael
- Department of Information Technology, INTEC, Acoustics Research Group, Ghent University, Ghent, Belgium
| | - Dick Botteldooren
- Department of Information Technology, INTEC, Acoustics Research Group, Ghent University, Ghent, Belgium
| | - Miet De Letter
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
| |
Collapse
|
14
|
Jafari Z, Kolb BE, Mohajerani MH. Auditory Dysfunction in Parkinson's Disease. Mov Disord 2020; 35:537-550. [PMID: 32052894 DOI: 10.1002/mds.28000] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/21/2020] [Accepted: 01/27/2020] [Indexed: 12/11/2022] Open
Abstract
PD is a progressive and complex neurological disorder with heterogeneous symptomatology. PD is characterized by classical motor features of parkinsonism and nonmotor symptoms and involves extensive regions of the nervous system, various neurotransmitters, and protein aggregates. Extensive evidence supports auditory dysfunction as an additional nonmotor feature of PD. Studies indicate a broad range of auditory impairments in PD, from the peripheral hearing system to the auditory brainstem and cortical areas. For instance, research demonstrates a higher occurrence of hearing loss in early-onset PD and evidence of abnormal auditory evoked potentials, event-related potentials, and habituation to novel stimuli. Electrophysiological data, such as auditory P3a, also is suggested as a sensitive measure of illness duration and severity. Improvement in auditory responses following dopaminergic therapies also indicates the presence of similar neurotransmitters (i.e., glutamate and dopamine) in the auditory system and basal ganglia. Nonetheless, hearing impairments in PD have received little attention in clinical practice so far. This review summarizes evidence of peripheral and central auditory impairments in PD and provides conclusions and directions for future empirical and clinical research. © 2020 International Parkinson and Movement Disorder Society.
Collapse
Affiliation(s)
- Zahra Jafari
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.,Department of Basic Sciences in Rehabilitation, School of Rehabilitation Sciences, Iran University of Medical Science (IUMS), Tehran, Iran
| | - Bryan E Kolb
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Majid H Mohajerani
- Department of Neuroscience, Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| |
Collapse
|
15
|
Diagnostic applications of the "pattern" electroretinography and visual evoked potentials in the evaluation of disorders of visual pathway function in Parkinson’s disease. VOJNOSANIT PREGL 2020. [DOI: 10.2298/vsp200126104s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background / Aim. In spite of continuous research efforts, specific
laboratory, neuropsychological or neurophysiological tests for the diagnosis
of Parkinson?s disease have not been established. The aims of the paper are
to determine the nature and extent of visual pathway disorders on ?pattern?
electroretinogram and visual evoked potentials in certain stages of
Parkinson's disease. Methods. The study was carried out in a group of 60
persons of both sexes, who were suffering from idiopathic Parkinson's
disease at the I-IV stage of the disease according to the Hoehn and Yahr
scale, and 30 healthy persons in the control group. The battery of
non-invasive neurophysiological tests was used to estimate the functional
status of the visual pathway: "pattern" electroretinography (PERG) and
visual evoked potentials (VEP). Results. In the early phase of PB there is a
linear increase in the latency of the wave N50 of the "pattern"
electroretinogram and the wave P100 of the visual evoked potentials with
significant extension of the latency of the N50 and P100 waves in subsequent
stages of Parkinson's disease. Diagnostic application of the "pattern"
electroretinography and visual evoked potentials enables the confirmation of
a disorder in the visual pathway function in Parkinson's disease.
Conclusions. These neurophysiological techniques may record early changes in
the function of retinal structures and the optic nerve in PD, which might be
significant both from the diagnostic and therapeutic aspects.
Collapse
|
16
|
Auditory brain oscillatory responses in drug-naïve patients with Parkinson’s disease. Neurosci Lett 2019; 701:170-174. [DOI: 10.1016/j.neulet.2019.02.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/11/2019] [Accepted: 02/25/2019] [Indexed: 01/09/2023]
|
17
|
Chen L, Liu C, Ye Z, Wang B, He S. Assessment of sleep quality using cardiopulmonary coupling analysis in patients with Parkinson's disease. Brain Behav 2018; 8:e00970. [PMID: 29761019 PMCID: PMC5943733 DOI: 10.1002/brb3.970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 02/21/2018] [Accepted: 03/11/2018] [Indexed: 11/25/2022] Open
Abstract
Objectives To assess the sleep quality of patients with Parkinson's disease (PD) and evaluate the effect of cardiopulmonary coupling (CPC) analysis on sleep quality and its correlation with subjective complaints in patients with PD. Methods Our study included 42 patients with PD and 30 healthy controls. CPC analysis and the Pittsburgh Sleep Quality Index (PSQI) were used to evaluate the sleep quality of subjects. Results High-frequency coupling (HFC) and sleep efficiency were significantly lower in the PD than in the control group, whereas very low-frequency coupling (VLFC) and sleep latency were significantly higher in the PD than in the control group. PSQI scores were significantly higher in the PD than in the control group (all p < .05). The PSQI score showed a negative correlation with the HFC ratio in the PD group (r = -.478, p = .001). Factors related to the occurrence of PD with poor sleep quality were the unified Parkinson's disease rating scale (UPDRS) score and nocturia. Conclusions The sleep quality of patients with PD was generally decreased. CPC analysis can reflect the subjective sleep quality of patients with PD and serve as an effective sleep monitoring tool.
Collapse
Affiliation(s)
- Lindi Chen
- Department of NeurologyZhoushan HospitalWenzhou Medical UniversityZhoushanChina
| | - Chunyan Liu
- Department of Critical Care MedicineHuzhou Central HospitalHuzhouChina
| | - Zhinan Ye
- Department of NeurologyTaizhou Municipal HospitalTaizhouChina
| | - Binda Wang
- Department of NeurologyZhoushan HospitalWenzhou Medical UniversityZhoushanChina
| | - Songbin He
- Department of NeurologyZhoushan HospitalWenzhou Medical UniversityZhoushanChina
| |
Collapse
|
18
|
Liu C, Zhang Y, Tang W, Wang B, Wang B, He S. Evoked potential changes in patients with Parkinson's disease. Brain Behav 2017; 7:e00703. [PMID: 28523237 PMCID: PMC5434200 DOI: 10.1002/brb3.703] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/06/2017] [Accepted: 03/03/2017] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE Patients with Parkinson's disease (PD) may have sensory dysfunction, and it can be more easily demonstrated through electrophysiologic testing. We aimed to explore whether the impairment of brainstem visual and auditory passageway exists in PD patients using visual evoked potential (VEP) and brainstem auditory evoked potential (BAEP) examinations. METHODS Forty-two PD cases and thirty controls participated in the study. All subjects underwent the VEP and BAEP examinations. The N75, P100, N145 latencies and P100 amplitude of VEP, the latencies of waves I, III, V and the interpeak latencies (IPL) of waves I-III, III-V, I-V were measured. RESULTS The N75, P100, N145 latencies of VEP, but not the amplitude of P100, were significantly longer in patients with PD than the control group (p < .05). The latencies of wave III and wave V, the IPL of III-V and I-V were all significantly increased compared with control subjects while no significant difference was noted in waves I and I-III IPL. CONCLUSION Our results found that brainstem visual and auditory passageway may be impaired in PD patients. SIGNIFICANCE VEP and BAEP can be served as sensitive measurements in helping prognosis and assessment the severity of the disease.
Collapse
Affiliation(s)
- Chunyan Liu
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| | - Yaping Zhang
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| | - Weiguo Tang
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| | - Binda Wang
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| | - Bona Wang
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| | - Songbin He
- Department of Neurology Zhoushan Hospital Wenzhou Medical University Zhoushan China
| |
Collapse
|