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Lodeweyckx T, de Hoon J, Van Laere K, Bautista E, Rizzo G, Bishop C, Rabiner E, Martin RS, Ford A, Vargas G. Effects on cerebral blood flow after single doses of the β 2 agonist, clenbuterol, in healthy volunteers and patients with mild cognitive impairment or Parkinson's disease. Br J Clin Pharmacol 2024. [PMID: 38953404 DOI: 10.1111/bcp.16160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 07/04/2024] Open
Abstract
AIMS Cerebral hypometabolism occurs years prior to a diagnosis of neurodegenerative diseases and coincides with reduced cerebral perfusion and declining noradrenergic transmission from the locus coeruleus. In pre-clinical models, β-adrenoceptor (β-AR) agonists increase cerebrocortical glucose metabolism, and may have therapeutic potential for neurodegenerative diseases. This study investigated the safety and effects on regional cerebral blood flow (rCBF) of the oral, brain-penetrant β2-AR agonist, clenbuterol, in healthy volunteers (HV) and patients with mild cognitive impairment (MCI) or Parkinson's disease (PD). METHODS This study evaluated the safety and effects on cerebral activity of the oral, brain-penetrant, β2-AR agonist clenbuterol (20-160 μg) in healthy volunteers and patients with MCI or PD. Regional CBF, which is tightly coupled to glucose metabolism, was measured by arterial spin labelling MRI in 32 subjects (25 HV and 8 MCI or PD) across five cohorts. In some cohorts, low doses of nadolol (1-5 mg), a β-AR antagonist with minimal brain penetration, were administered with clenbuterol to control peripheral β2-AR responses. RESULTS Significant, dose-dependent increases in rCBF were seen in multiple brain regions, including hippocampus, amygdala and thalamus, following the administration of clenbuterol to HVs (mean changes from baseline in hippocampal rCBF of -1.7%, 7.3%, 22.9%, 28.4% 3 h after 20, 40, 80 and 160 μg clenbuterol, respectively). In patients with MCI or PD, increases in rCBF following 80 μg clenbuterol were observed both without and with 5 mg nadolol (in hippocampus, 18.6%/13.7% without/with nadolol). Clenbuterol was safe and well-tolerated in all subjects; known side effects of β2-agonists, including increased heart rate and tremor, were mild in intensity and were blocked by low-dose nadolol. CONCLUSIONS The effects of clenbuterol on rCBF were evident both in the absence and presence of low-dose nadolol, suggesting central nervous system (CNS) involvement. Concomitant inhibition of the peripheral effects of clenbuterol by nadolol confirms that meaningful β2-AR antagonism in the periphery was achieved without interrupting the central effects of clenbuterol on rCBF.
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Affiliation(s)
- Thomas Lodeweyckx
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, Catholic University Leuven, Leuven, Belgium
| | - Jan de Hoon
- Center for Clinical Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, Catholic University Leuven, Leuven, Belgium
| | - Koen Van Laere
- Division of Nuclear Medicine, University Hospital Leuven and Nuclear Medicine and Molecular Imaging, KU Leuven, Leuven, Belgium
| | | | | | | | - Eugenii Rabiner
- Invicro, London, UK
- Centre for Neuroimaging Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | | | - Anthony Ford
- CuraSen Therapeutics, San Carlos, California, USA
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Ferreira R, Bastos-Leite AJ. Arterial spin labelling magnetic resonance imaging and perfusion patterns in neurocognitive and other mental disorders: a systematic review. Neuroradiology 2024; 66:1065-1081. [PMID: 38536448 PMCID: PMC11150205 DOI: 10.1007/s00234-024-03323-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 02/24/2024] [Indexed: 04/18/2024]
Abstract
We reviewed 33 original research studies assessing brain perfusion, using consensus guidelines from a "white paper" issued by the International Society for Magnetic Resonance in Medicine Perfusion Study Group and the European Cooperation in Science and Technology Action BM1103 ("Arterial Spin Labelling Initiative in Dementia"; https://www.cost.eu/actions/BM1103/ ). The studies were published between 2011 and 2023 and included participants with subjective cognitive decline plus; neurocognitive disorders, including mild cognitive impairment (MCI), Alzheimer's disease (AD), frontotemporal lobar degeneration (FTLD), dementia with Lewy bodies (DLB) and vascular cognitive impairment (VCI); as well as schizophrenia spectrum disorders, bipolar and major depressive disorders, autism spectrum disorder, attention-deficit/hyperactivity disorder, panic disorder and alcohol use disorder. Hypoperfusion associated with cognitive impairment was the major finding across the spectrum of cognitive decline. Regional hyperperfusion also was reported in MCI, AD, frontotemporal dementia phenocopy syndrome and VCI. Hypoperfused structures found to aid in diagnosing AD included the precunei and adjacent posterior cingulate cortices. Hypoperfused structures found to better diagnose patients with FTLD were the anterior cingulate cortices and frontal regions. Hypoperfusion in patients with DLB was found to relatively spare the temporal lobes, even after correction for partial volume effects. Hyperperfusion in the temporal cortices and hypoperfusion in the prefrontal and anterior cingulate cortices were found in patients with schizophrenia, most of whom were on medication and at the chronic stage of illness. Infratentorial structures were found to be abnormally perfused in patients with bipolar or major depressive disorders. Brain perfusion abnormalities were helpful in diagnosing most neurocognitive disorders. Abnormalities reported in VCI and the remaining mental disorders were heterogeneous and not generalisable.
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Affiliation(s)
- Rita Ferreira
- Faculty of Medicine, University of Porto, Porto, Portugal
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Nakhla MZ, Bangen KJ, Schiehser DM, Roesch S, Zlatar ZZ. Greater subjective cognitive decline severity is associated with worse memory performance and lower entorhinal cerebral blood flow in healthy older adults. J Int Neuropsychol Soc 2024; 30:1-10. [PMID: 36781410 PMCID: PMC10423746 DOI: 10.1017/s1355617723000115] [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] [Indexed: 02/15/2023]
Abstract
OBJECTIVE Subjective cognitive decline (SCD) is a potential early risk marker for Alzheimer's disease (AD), but its utility may vary across individuals. We investigated the relationship of SCD severity with memory function and cerebral blood flow (CBF) in areas of the middle temporal lobe (MTL) in a cognitively normal and overall healthy sample of older adults. Exploratory analyses examined if the association of SCD severity with memory and MTL CBF was different in those with lower and higher cardiovascular disease (CVD) risk status. METHODS Fifty-two community-dwelling older adults underwent magnetic resonance imaging, neuropsychological testing, and were administered the Everyday Cognition Scale (ECog) to measure SCD. Regression models investigated whether ECog scores were associated with memory performance and MTL CBF, followed by similar exploratory regressions stratified by CVD risk status (i.e., lower vs higher stroke risk). RESULTS Higher ECog scores were associated with lower objective memory performance and lower entorhinal cortex CBF after adjusting for demographics and mood. In exploratory stratified analyses, these associations remained significant in the higher stroke risk group only. CONCLUSIONS Our preliminary findings suggest that SCD severity is associated with cognition and brain markers of preclinical AD in otherwise healthy older adults with overall low CVD burden and that this relationship may be stronger for individuals with higher stroke risk, although larger studies with more diverse samples are needed to confirm these findings. Our results shed light on individual characteristics that may increase the utility of SCD as an early risk marker of cognitive decline.
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Affiliation(s)
- Marina Z. Nakhla
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, 6363 Alvarado Ct, San Diego, CA
- Department of Psychiatry; University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093
- Research Service, VA San Diego Healthcare System, La Jolla, California, 3350 La Jolla Village Dr., San Diego, CA 92161
| | - Katherine J. Bangen
- Department of Psychiatry; University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093
- Research Service, VA San Diego Healthcare System, La Jolla, California, 3350 La Jolla Village Dr., San Diego, CA 92161
| | - Dawn M. Schiehser
- Department of Psychiatry; University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093
- Research Service, VA San Diego Healthcare System, La Jolla, California, 3350 La Jolla Village Dr., San Diego, CA 92161
| | - Scott Roesch
- Department of Psychology, San Diego State University, 5500 Campanile Dr., San Diego, 92182
| | - Zvinka Z. Zlatar
- Department of Psychiatry; University of California, San Diego, 9500 Gilman Dr, La Jolla, CA 92093
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Munro CE, Boyle R, Chen X, Coughlan G, Gonzalez C, Jutten RJ, Martinez J, Orlovsky I, Robinson T, Weizenbaum E, Pluim CF, Quiroz YT, Gatchel JR, Vannini P, Amariglio R. Recent contributions to the field of subjective cognitive decline in aging: A literature review. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2023; 15:e12475. [PMID: 37869044 PMCID: PMC10585124 DOI: 10.1002/dad2.12475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 06/23/2023] [Accepted: 08/04/2023] [Indexed: 10/24/2023]
Abstract
Subjective cognitive decline (SCD) is defined as self-experienced, persistent concerns of decline in cognitive capacity in the context of normal performance on objective cognitive measures. Although SCD was initially thought to represent the "worried well," these concerns can be linked to subtle brain changes prior to changes in objective cognitive performance and, therefore, in some individuals, SCD may represent the early stages of an underlying neurodegenerative disease process (e.g., Alzheimer's disease). The field of SCD research has expanded rapidly over the years, and this review aims to provide an update on new advances in, and contributions to, the field of SCD in key areas and themes identified by researchers in this field as particularly important and impactful. First, we highlight recent studies examining sociodemographic and genetic risk factors for SCD, including explorations of SCD across racial and ethnic minoritized groups, and examinations of sex and gender considerations. Next, we review new findings on relationships between SCD and in vivo markers of pathophysiology, utilizing neuroimaging and biofluid data, as well as associations between SCD and objective cognitive tests and neuropsychiatric measures. Finally, we summarize recent work on interventions for SCD and areas of future growth in the field of SCD.
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Affiliation(s)
| | - Rory Boyle
- Department of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Xi Chen
- Helen Wills Neuroscience InstituteUniversity of California BerkeleyBerkeleyCaliforniaUSA
| | - Gillian Coughlan
- Department of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Christopher Gonzalez
- Department of PsychologyIllinois Institute of TechnologyChicagoIllinoisUSA
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Roos J. Jutten
- Department of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Jairo Martinez
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
- Department of Psychological and Brain SciencesBoston UniversityBostonMassachusettsUSA
| | - Irina Orlovsky
- Department of Psychological and Brain SciencesUniversity of Massachusetts AmherstAmherstMassachusettsUSA
| | | | - Emma Weizenbaum
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Celina F. Pluim
- Brigham and Women's HospitalBostonMassachusettsUSA
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
- Department of Psychological and Brain SciencesBoston UniversityBostonMassachusettsUSA
| | - Yakeel T. Quiroz
- Department of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Jennifer R. Gatchel
- Department of PsychiatryMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Patrizia Vannini
- Brigham and Women's HospitalBostonMassachusettsUSA
- Department of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
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Guan J, Li Q, Dai Z, Lai L, Sun S, Geng Y, Shen Z, Luo L, Jia Y, Yang L, Tang Y, Yan G, Wu R. Quantitative morphometric changes in vascular mild cognitive impairment patients: early diagnosis of dementia. Cereb Cortex 2023; 33:5501-5506. [PMID: 36635220 PMCID: PMC10152087 DOI: 10.1093/cercor/bhac437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/08/2022] [Accepted: 10/09/2022] [Indexed: 01/14/2023] Open
Abstract
Vascular mild cognitive impairment (VMCI) is an early and reversible stage of dementia. Volume differences in regional gray matter may reveal the development and prognosis of VMCI. This study selected 2 of the most common types of VMCI, namely, periventricular white matter hyperintensities (PWMH, n = 14) and strategic single infarctions (SSI, n = 10), and used the voxel-based morphometry method to quantify their morphological characteristics. Meanwhile, age- and sex-matched healthy volunteers were included (n = 16). All the participants were neuropsychologically tested to characterize their cognitive function and underwent whole-brain magnetic resonance imaging scanning. Our results showed that the volumes of the bilateral temporal lobes and bilateral frontal gray matter were obviously diminished in the PWMH group. The atrophy volume difference was 4,086 voxels in the left temporal lobe, 4,154 voxels in the right temporal lobe, 1,718 voxels in the left frontal lobe, and 1,141 voxels in the right frontal lobe (P ≤ 0.001). Moreover, the characteristics of the gray matter atrophy associated with the PWMH were more similar to those associated with Alzheimer's disease than SSI, which further revealed the susceptibility for escalation from PWMH to dementia. In conclusion, PWMH patients and SSI patients have different morphological characteristics, which explain the different prognoses of VMCI.
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Affiliation(s)
| | | | | | | | | | - Yiqun Geng
- Laboratory of Molecular Pathology, Shantou University Medical College, Shantou 515041, China
| | - Zhiwei Shen
- Department of Radiology, The 2nd Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China
| | - Lan Luo
- Department of Radiology, The 2nd Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China
| | - Yanlong Jia
- Department of Radiology, The 2nd Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China
| | - Lin Yang
- Department of Radiology, The 2nd Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China
| | - Yanyan Tang
- Department of Radiology, The 2nd Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China
| | - Gen Yan
- Corresponding authors: Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China. (Gen Yan); Department of Radiology, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China. (Renhua Wu)
| | - Renhua Wu
- Corresponding authors: Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China. (Gen Yan); Department of Radiology, The Second Affiliated Hospital of Shantou University Medical College, Shantou, China. (Renhua Wu)
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Dai Z, Yang Z, Chen X, Zheng W, Zhuang Z, Liao Y, Li M, Chen S, Lin D, Wu X, Shen J. The aging of glymphatic system in human brain and its correlation with brain charts and neuropsychological functioning. Cereb Cortex 2023:7078816. [PMID: 36928180 DOI: 10.1093/cercor/bhad086] [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: 01/26/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
This study aimed to investigate the aging of the glymphatic system in healthy adults, and to determine whether this change is correlated with the brain charts and neuropsychological functioning. Two independent brain 3.0 T MRI datasets were analyzed: a public dataset and our hospital-own dataset from two hospitals. The function of the glymphatic system was quantified by diffusion analysis along the perivascular space (ALPS) index via an automatic method. Brain charts were calculated online. Correlations of the ALPS index with the brain charts, age, gender, and neuropsychological functioning, as well as differences in ALPS index across age groups, were assessed. A total of 161 healthy volunteers ranging in age from 20 to 87 years were included. ALPS index was negatively correlated with the age in both independent datasets. Compared with that of the young group, the ALPS index was significantly lower in the elderly group. No significant difference was found in the ALPS index between different genders. In addition, the ALPS index was not significantly correlated with the brain charts and neuropsychological functioning. In conclusion, the aging of glymphatic system exists in healthy adults, which is not correlated with the changes of brain charts and neuropsychological functioning.
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Affiliation(s)
- Zhuozhi Dai
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
- Department of Radiology, Shantou Central Hospital, Shantou 515031, China
| | - Zhiqi Yang
- Department of Radiology, Meizhou People's Hospital, Meizhou 514031, China
| | - Xiaofeng Chen
- Department of Radiology, Meizhou People's Hospital, Meizhou 514031, China
| | - Wenbin Zheng
- Department of Radiology, Second Affiliated Hospital of Shantou University Medical College, Shantou 515000, China
| | - Zerui Zhuang
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Yuting Liao
- Department of life sciences, GE Healthcare, Guangzhou 510623, China
| | - Mu Li
- Department of Neurosurgery, Second Affiliated Hospital of Shantou University Medical College, Shantou 515000, China
| | - Shaoxian Chen
- Department of Radiology, Shantou Central Hospital, Shantou 515031, China
| | - Daiying Lin
- Department of Radiology, Shantou Central Hospital, Shantou 515031, China
| | - Xianheng Wu
- Department of Radiology, Shantou Central Hospital, Shantou 515031, China
| | - Jun Shen
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
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Barham M, Kuroda M, Yoshimura Y, Hamada K, Khasawneh A, Sugimoto K, Konishi K, Tekiki N, Sugianto I, Bamgbose BO, Ishizaka H, Shimizu Y, Nakamitsu Y, Al-Hammad WE, Kamizaki R, Kurozumi A, Matsushita T, Ohno S, Asaumi J. Evaluation of calculation processes of apparent diffusion coefficient subtraction method (ASM) imaging. PLoS One 2023; 18:e0282462. [PMID: 36848353 PMCID: PMC9970062 DOI: 10.1371/journal.pone.0282462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 02/16/2023] [Indexed: 03/01/2023] Open
Abstract
A number of restricted diffusion (RD) imaging techniques, such as diffusion kurtosis (DK) imaging and Q space imaging, have been developed and proven to be useful for the diagnosis of diseases, including cerebral gliomas and cerebrovascular infarction. In particular, apparent diffusion coefficient (ADC) subtraction method (ASM) imaging has become available recently as a novel RD imaging technique. ASM is based on the difference between the ADC values in an image pair of two ADC maps, ADC basic (ADCb) and ADC modify (ADCm), which are created from diffusion-weighted images taken using short and long effective diffusion times, respectively. The present study aimed to assess the potential of different types of ASM imaging by comparing them with DK imaging which is the gold-standard RD imaging technique. In the present basic study using both polyethylene glycol phantom and cell-containing bio-phantom, three different types of ASM images were created using different calculation processes. ASM/A is an image calculated by dividing the absolute difference between ADCb and ADCm by ADCb several times. By contrast, ASM/S is an image created by dividing the absolute difference between ADCb and ADCm by the standard deviation of ADCb several times. As for positive ASM/A image (PASM/A), the positive image, which was resultant after subtracting ADCb from ADCm, was divided by ADCb several times. A comparison was made between the types of ASM and DK images. The results showed the same tendency between ASM/A in addition to both ASM/S and PASM/A. By increasing the number of divisions by ADCb from three to five times, ASM/A images transformed from DK-mimicking to more RD-sensitive images compared with DK images. These observations suggest that ASM/A images may prove useful for future clinical applications in RD imaging protocols for the diagnosis of diseases.
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Affiliation(s)
- Majd Barham
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masahiro Kuroda
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
- * E-mail:
| | - Yuuki Yoshimura
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
- Radiology Diagnosis, Okayama Saiseikai General Hospital, Okayama, Japan
| | - Kentaro Hamada
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Abdullah Khasawneh
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kohei Sugimoto
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Kohei Konishi
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Nouha Tekiki
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Irfan Sugianto
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Babatunde O. Bamgbose
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hinata Ishizaka
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Yudai Shimizu
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yuki Nakamitsu
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Wlla E. Al-Hammad
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryo Kamizaki
- Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Akira Kurozumi
- Central Division of Radiology, Okayama University Hospital, Okayama, Japan
| | - Toshi Matsushita
- Central Division of Radiology, Okayama University Hospital, Okayama, Japan
| | - Seiichiro Ohno
- Central Division of Radiology, Okayama University Hospital, Okayama, Japan
| | - Junichi Asaumi
- Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Chu X, Wu P, Yan H, Chen X, Fan L, Wu Z, Tao C, Ma Y, Fu Y, Guo Y, Dong Y, Yang C, Ge Y. Comparison of brain microstructure alterations on diffusion kurtosis imaging among Alzheimer’s disease, mild cognitive impairment, and cognitively normal individuals. Front Aging Neurosci 2022; 14:919143. [PMID: 36034135 PMCID: PMC9416000 DOI: 10.3389/fnagi.2022.919143] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveOur study aimed to explore the differences in brain microstructure in patients with Alzheimer’s disease (AD) and with mild cognitive impairment (MCI) and in individuals with normal cognition using diffusion kurtosis imaging (DKI) to identify a potential non-invasive biomarker of AD.Materials and methodsA total of 61 subjects were included in our study, including 20 subjects diagnosed with AD, 21 patients diagnosed with amnestic MCI, and 20 cognitively normal individuals. We acquired magnetic resonance imaging (MRI) scans, and DKI images were processed. Twelve regions of interest were drawn, and various parameters were measured and analyzed using SPSS version 11.0 software.ResultsComparative analysis showed that differences in brain regions in terms of mean diffusion (MD) and mean kurtosis (MK) between groups were the most marked. Precuneus MD, temporal MK, precuneus MK, and hippocampal MK were significantly correlated with neuropsychological test scores. Hippocampal MK showed the strongest correlation with the medial temporal lobe atrophy score (r = −0.510), and precuneus MD had the strongest correlation with the Koedam score (r = 0.463). The receiver operating curve analysis revealed that hippocampal MK exhibited better diagnostic efficacy than precuneus MD for comparisons between any group pair.ConclusionDKI is capable of detecting differences in brain microstructure between patients with AD, patients with MCI, and cognitively normal individuals. Moreover, it compensates for the deficiencies of conventional MRI in detecting pathological changes in microstructure before the appearance of macroscopic atrophy. Hippocampus MK was the most sensitive single parameter map for differentiating patients with AD, patients with MCI, and cognitively normal individuals.
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Affiliation(s)
- Xiaoqi Chu
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
- School of Medicine, Nankai University, Tianjin, China
| | - Peng Wu
- Department of Radiology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hongting Yan
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xuejing Chen
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Liting Fan
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zheng Wu
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Chunmei Tao
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yue Ma
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yu Fu
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yunchu Guo
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yang Dong
- Department of Radiology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Chao Yang
- Department of Radiology, First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Chao Yang,
| | - Yusong Ge
- Department of Neurology, Second Affiliated Hospital of Dalian Medical University, Dalian, China
- Yusong Ge,
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Li W, Jiang J, Zou X, Zhang Y, Sun M, Jia Z, Li W, Xu J. The characteristics of arterial spin labeling cerebral blood flow in patients with subjective cognitive decline: The Chinese imaging, biomarkers, and lifestyle study. Front Neurosci 2022; 16:961164. [PMID: 35983224 PMCID: PMC9379247 DOI: 10.3389/fnins.2022.961164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveWe aimed to characterize the potential risk factors and cerebral perfusion of patients with subjective cognitive decline (SCD).MethodsThis prospective study enrolled consecutive patients from the Chinese Imaging, Biomarkers, and Lifestyle (CIBL) Cohort of Alzheimer’s disease between February 2021 and March 2022. Patients who met the SCD diagnostic criteria were categorized into the SCD group, while those without cognitive complaints or any concerns were assigned to the healthy control (HC) group. The demographic and clinical characteristics and cerebral blood flow (CBF) from pseudo-continuous arterial spin labeling (pCASL) in standard cognitive regions were compared between these two groups. A multivariate analysis was performed to identify independent factors associated with SCD.ResultsThe frequency of family history of dementia in the SCD group was higher compared with the HC group (p = 0.016). The CBF of left hippocampus (p = 0.023), left parahippocampal gyrus (p = 0.004), left precuneus (p = 0.029), left middle temporal gyrus (p = 0.022), right parahippocampal gyrus (p = 0.018), and right precuneus (p = 0.024) in the SCD group were significantly increased than those in the HC group. The multivariate logistic regression analyses demonstrated that the family history of dementia [OR = 4.284 (1.096–16.747), p = 0.036] and the CBF of left parahippocampal gyrus [OR = 1.361 (1.006–1.840), p = 0.045] were independently associated with SCD.ConclusionThis study demonstrated that the family history of dementia and the higher CBF within the left parahippocampal gyrus were independent risk factors associated with patients with SCD, which could help in the early identification of the SCD and in intervening during this optimal period.
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Affiliation(s)
- Wenyi Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jiwei Jiang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xinying Zou
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Yuan Zhang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Mengfan Sun
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Ziyan Jia
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Wei Li
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Jun Xu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- *Correspondence: Jun Xu,
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10
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Taha HT, Chad JA, Chen JJ. DKI enhances the sensitivity and interpretability of age-related DTI patterns in the white matter of UK biobank participants. Neurobiol Aging 2022; 115:39-49. [PMID: 35468551 DOI: 10.1016/j.neurobiolaging.2022.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/09/2022] [Accepted: 03/12/2022] [Indexed: 12/25/2022]
Abstract
Studies of healthy brain aging traditionally report diffusivity patterns associated with white matter degeneration using diffusion tensor imaging (DTI), which assumes that diffusion measured at typical b-values (approximately 1000 s/mm2) is Gaussian. Diffusion kurtosis imaging (DKI) is an extension of DTI that measures non-Gaussian diffusion (kurtosis) to better capture microenvironmental processes by incorporating additional data at a higher b-value. In this study, using diffusion data (b-values of 1000 and 2000 s/mm2) from 700 UK Biobank participants aged 46-80, we investigate (1) the extent of novel information gained from adding diffusional kurtosis to diffusivity observations in aging, and (2) how conventional DTI metrics in aging compare with diffusivity metrics derived from DKI, which are corrected for kurtosis. We establish a pattern of lower kurtosis alongside higher diffusivity among older adults, with kurtosis generally being more sensitive to age than diffusivity. We also find discrepancies between diffusivity metrics derived from DTI and DKI, emphasizing the importance of accounting for non-Gaussian diffusion when interpreting age-related diffusivity patterns.
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Affiliation(s)
- Hiba T Taha
- Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, Canada; Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Jordan A Chad
- Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - J Jean Chen
- Rotman Research Institute, Baycrest Health Sciences, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
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11
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Jiang YY, Zhong ZL, Zuo M. Three-dimensional arterial spin labeling and diffusion kurtosis imaging in evaluating perfusion and infarct area size in acute cerebral ischemia. World J Clin Cases 2022; 10:5586-5594. [PMID: 35979093 PMCID: PMC9258361 DOI: 10.12998/wjcc.v10.i17.5586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/01/2022] [Accepted: 04/09/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Early thrombolytic therapy is crucial to treat acute cerebral infarction, especially since the onset of thrombolytic therapy takes 1-6 h. Therefore, early diagnosis and evaluation of cerebral infarction is important.
AIM To investigate the diagnostic value of magnetic resonance multi-delay three-dimensional arterial spin labeling (3DASL) and diffusion kurtosis imaging (DKI) in evaluating the perfusion and infarct area size in patients with acute cerebral ischemia.
METHODS Eighty-four patients who experienced acute cerebral ischemia from March 2019 to February 2021 were included. All patients in the acute stage underwent magnetic resonance-based examination, and the data were processed by the system’s own software. The apparent diffusion coefficient (ADC), average diffusion coefficient (MD), axial diffusion (AD), radial diffusion (RD), average kurtosis (MK), radial kurtosis (fairly RK), axial kurtosis (AK), and perfusion parameters post-labeling delays (PLD) in the focal area and its corresponding area were compared. The correlation between the lesion area of cerebral infarction under MK and MD and T2-weighted imaging (T2WI) was analyzed.
RESULTS The DKI parameters of focal and control areas in the study subjects were compared. The ADC, MD, AD, and RD values in the lesion area were significantly lower than those in the control area. The MK, RK, and AK values in the lesion area were significantly higher than those in the control area. The MK/MD value in the infarct lesions was used to determine the matching situation. MK/MD < 5 mm was considered matching and MK/MD ≥ 5 mm was considered mismatching. PLD1.5s and PLD2.5s perfusion parameters in the central, peripheral, and control areas of the infarct lesions in MK/MD-matched and -unmatched patients were not significantly different. PLD1.5s and PLD2.5s perfusion parameter values in the central area of the infarct lesions in MK/MD-matched and -unmatched patients were significantly lower than those in peripheral and control areas. The MK and MD maps showed a lesion area of 20.08 ± 5.74 cm2 and 22.09 ± 5.58 cm2, respectively. T2WI showed a lesion area of 19.76 ± 5.02 cm2. There were no significant differences in the cerebral infarction lesion areas measured using the three methods. MK, MD, and T2WI showed a good correlation.
CONCLUSION DKI parameters showed significant difference between the focal and control areas in patients with acute ischemic cerebral infarction. 3DASL can effectively determine the changes in perfusion levels in the lesion area. There was a high correlation between the area of the infarct lesions diagnosed by DKI and T2WI.
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Affiliation(s)
- Yan-Yan Jiang
- Department of Magnetic Resonance, Wuhan Asia General Hospital, Wuhan 430056, Hubei Province, China
| | - Zhi-Lin Zhong
- Department of Radiology, Wuhan Yaxin General Hospital, Wuhan 430056, Hubei Province, China
| | - Min Zuo
- Department of Radiology, Wuhan Hanyang Hospital, Wuhan University of Science and Technology, Wuhan 430050, Hubei Province, China
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12
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High-resolution NMR metabolomics of patients with subjective cognitive decline plus: Perturbations in the metabolism of glucose and branched-chain amino acids. Neurobiol Dis 2022; 171:105782. [DOI: 10.1016/j.nbd.2022.105782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/26/2022] [Accepted: 05/31/2022] [Indexed: 11/20/2022] Open
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13
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Yang L, Cheng Y, Sun Y, Xuan Y, Niu J, Guan J, Rong Y, Jia Y, Zhuang Z, Yan G, Wu R. Combined Application of Quantitative Susceptibility Mapping and Diffusion Kurtosis Imaging Techniques to Investigate the Effect of Iron Deposition on Microstructural Changes in the Brain in Parkinson's Disease. Front Aging Neurosci 2022; 14:792778. [PMID: 35370619 PMCID: PMC8965454 DOI: 10.3389/fnagi.2022.792778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 02/23/2022] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Brain iron deposition and microstructural changes in brain tissue are associated with Parkinson's disease (PD). However, the correlation between these factors in Parkinson's disease has been little studied. This study aimed to use quantitative susceptibility mapping combined with diffusion kurtosis imaging to investigate the effects of iron deposition on microstructural tissue alterations in the brain. METHODS Quantitative susceptibility mapping and diffusion kurtosis imaging were performed on 24 patients with early PD, 13 patients with advanced PD, and 25 healthy controls. The mean values of magnetic susceptibility and diffusion kurtosis were calculated for the bilateral substantia nigra, red nucleus, putamen, globus pallidus, and caudate nucleus, and compared between the groups. Correlation analyses between the diffusion kurtosis of each nucleus and its magnetic susceptibility parameters in PD patients and healthy controls were performed. RESULTS The study found a significant increase in iron deposition in the substantia nigra, red nucleus, putamen and globus pallidus, bilaterally, in patients with PD. Mean kurtosis values were increased in the substantia nigra but decreased in the globus pallidus; axial kurtosis values were decreased in both the substantia nigra and red nucleus; radial kurtosis values were increased in the substantia nigra but showed an opposite trend in the globus pallidus and caudate nucleus. In the substantia nigra of patients with PD, magnetic susceptibility was positively correlated with mean and radial kurtosis values, and negatively correlated with axial kurtosis. None of these correlations were significantly different in the control group. In the putamen, magnetic susceptibility was positively correlated with mean, axial, and radial kurtosis only in patients with advanced-stage PD. CONCLUSION Our study provides new evidence for brain iron content and microstructural alterations in patients with PD. Iron deposition may be a common mechanism for microstructural alterations in the substantia nigra and putamen of patients with PD. Tracking the dynamic changes in iron content and microstructure throughout the course of PD will help us to better understand the dynamics of iron metabolism and microstructural alterations in the pathogenesis of PD and to develop new approaches to monitor and treat PD.
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Affiliation(s)
- Lin Yang
- Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yan Cheng
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yongyan Sun
- Department of Pharmacy, Guangdong Second Provincial General Hospital, Zhuhai Hospital, Zhuhai, China
| | - Yinghua Xuan
- Department of Basic Medicine, Xiamen Medical College, Xiamen, China
| | - Jianping Niu
- Department of Neurology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Jitian Guan
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yunjie Rong
- Department of Ultrasound, Foshan Women and Children’s Hospital Affiliated to Southern Medical University, Foshan, China
| | - Yanlong Jia
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Zerui Zhuang
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gen Yan
- Department of Radiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Renhua Wu
- Department of Radiology, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
- Guangdong Provincial Key Laboratory for Breast Cancer Diagnosis and Treatment, Cancer Hospital of Shantou University Medical College, Shantou, China
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14
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Yang Z, Wan X, Zhao X, Rong Y, Wu Y, Cao Z, Xie Q, Luo M, Liu Y. Brain neurometabolites differences in individuals with subjective cognitive decline plus: a quantitative single- and multi-voxel proton magnetic resonance spectroscopy study. Quant Imaging Med Surg 2021; 11:4074-4096. [PMID: 34476190 DOI: 10.21037/qims-20-1254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
Background Subjective cognitive decline plus could be an extremely early phase of Alzheimer's disease; however, changes of N-acetylaspartate, myoinositol, and N-acetylaspartate/myoinositol is still unknown at this stage. This study aimed to explore brain neurometabolic alterations in patients with subjective cognitive decline plus using quantitative single-voxel and multi-voxel 1H-magnetic resonance spectroscopy. Methods A total of 91 participants were enrolled and underwent a GE 3.0-T magnetic resonance imaging, including 33 elderly controls, 27 patients with subjective cognitive decline plus, and 31 patients with amnestic mild cognitive impairment (MCI). Single-voxel and multi-voxel 1H-magnetic resonance spectroscopy were used to investigate the differences in neurometabolite levels among the three groups. Results Compared with elderly controls, patients with subjective cognitive decline plus showed significant decline in N-acetylaspartate and N-acetylaspartate/myoinositol values in multiple regions, and amnestic MCI participants demonstrated more significant decreased N-acetylaspartate and N-acetylaspartate/myoinositol levels in multiple regions. The combined concentrations of N-acetylaspartate with myoinositol showed an excellent discrimination between those with subjective cognitive decline plus and elderly controls as compared to that obtained using N-acetylaspartate/myoinositol ratios with the area under the receiver operating characteristic curve of 0.895 and 0.860, respectively. Likewise, the combined area under the curve for differentiating patients with subjective cognitive decline plus from amnestic MCI was obtained using the combined levels of N-acetylaspartate with myoinositol was 0.892. This was also higher than the combined area under the curve of 0.836 obtained using N-acetylaspartate/myoinositol ratios. Moreover, N-acetylaspartate levels in the left hippocampus and left posterior cingulate cortex (PCC) was positively related to the Auditory Verbal Learning Test delayed recall scores in patients with subjective cognitive decline plus, whereas only the N-acetylaspartate/myoinositol ratio was positively related to this scale scores in the left hippocampus. Conclusions Quantitative single-voxel and multi-voxel 1H-magnetic resonance spectroscopy can provide valuable information to detect alterative brain neurometabolites characteristics in patients with subjective cognitive decline plus. N-acetylaspartate concentrations may be used as one of the earliest neuroimaging markers at this stage, while N-acetylaspartate/myoinositol ratio could be more suitable for monitoring Alzheimer's disease progression.
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Affiliation(s)
- Zhongxian Yang
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China.,Medical Imaging Center, the Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Xing Wan
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xinzhu Zhao
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yu Rong
- Department of Neurology, the People's Hospital of Gaozhou City, Maoming, China
| | - Yi Wu
- Department of Neurology, Shantou Central Hospital and Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, China
| | - Zhen Cao
- Medical Imaging Center, the Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Qiuxia Xie
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Min Luo
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yubao Liu
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
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