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Association of the p75NTR Ser205Leu Polymorphism with Asymptomatic HTLV-1 Infection. Viruses 2022; 14:v14061175. [PMID: 35746645 PMCID: PMC9230641 DOI: 10.3390/v14061175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/22/2022] [Accepted: 05/26/2022] [Indexed: 12/04/2022] Open
Abstract
Genetic variations in components of the immune response seem to be an important factor that contributes to the manifestation of symptoms of some diseases related to HTLV-1 infection. Nerve growth factor (NGF) and the p75 neurotrophin receptor (p75NTR) are related to the maintenance of neurons and the activation of the immune response. In this study, we evaluated the association of the NGF -198C/T, NGF Ala35Val, and p75NTR Ser205Leu polymorphisms with HTLV-1 infection and plasma cytokine levels in 166 samples from individuals infected with HTLV-1 (59 symptomatic and 107 asymptomatic). The genotyping and quantification of the proviral load were performed by real-time PCR, and cytokine levels were measured by ELISA. The NGF -198C/T and NGF Ala35Val polymorphisms were not associated with HTLV-1 infection. The frequency of the Ser/Leu genotype of p75NTR Ser205Leu was more frequent in the control group (p = 0.0385), and the Ser/Leu genotype and allele Leu were more frequent among the asymptomatic (p < 0.05), especially with respect to the HTLV-1-associated myelopathy (HAM) group (p < 0.05). The symptomatic showed a higher proviral load and higher TNF-α and IL-10 levels (p < 0.05). Asymptomatic carriers of the Ser/Leu genotype (p = 0.0797) had lower levels of proviral load and higher levels of TNF-α (p = 0.0507). Based on the results obtained, we conclude that the p75NTR Ser205Leu polymorphism may be associated with reduced susceptibility to HTLV-1 infection, a lower risk of developing symptoms, including HAM, and better infection control.
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Pereira LMS, da Silva Graça Amoras E, da Silva Conde SRS, Demachki S, dos Santos EJM, Lima SS, Ishak R, Rosário Vallinoto AC. NGF (-198C > T, Ala35Val) and p75 NTR (Ser205Leu) gene mutations are associated with liver function in different histopathological profiles of the patients with chronic viral hepatitis in the Brazilian Amazon. Mol Med 2020; 26:12. [PMID: 31996124 PMCID: PMC6990582 DOI: 10.1186/s10020-019-0134-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/29/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUNDS Neural growth factor (NGF) is a neurotrophin that can interact with the p75NTR receptor and initiate a cascade of reactions that determines cell survival or death, and both are associated with the physiology of liver tissue. Single nucleotide polymorphisms (SNPs) in the NGF and p75NTR genes have been investigated in different pathologies; however, there are no studies that have analyzed their biological roles in the hepatic microenvironment. In the present study, we evaluated the impact of SNPs in these genes on the maintenance of liver function at different stages of inflammation and fibrosis in patients with chronic viral liver disease in the Brazilian Amazon. METHODS The SNPs -198C > T, Arg80Gln, Val72Met, Ala35Val, Ala18Ala and Ser205Leu were genotyped by real-time PCR in samples from patients with chronic viral hepatitis stratified by stage of inflammation and liver fibrosis. Histopathological, viral load (VL), liver enzyme and comorbidities data were obtained from updated medical records. Other aspects were highlighted by applied epidemiological questionnaires. RESULTS The -198C/T and Ala35Val polymorphisms in NGF were associated with changes in histopathological profiles, VL and liver enzymes. Ser205Leu polymorphism in p75NTR was associated only with changes in VL and liver enzymes. Polymorphic frequencies were variable among different ethnic populations, mainly for biologically relevant polymorphisms. A multifactorial network of interactions has been established based on genetic, virological, behavioral and biochemical aspects. CONCLUSION Mutations in the NGF (-198C > T, Ala35Val) and p75NTR (Ser205Leu) genes, within the list of multifactorial aspects, are associated with liver function in different histopathological profiles of patients with chronic viral liver disease in the Brazilian Amazon.
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Affiliation(s)
- Leonn Mendes Soares Pereira
- Virology Laboratory, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
- Postgraduate Program in Biology of Infectious and Parasitic Agents, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
| | | | | | - Sâmia Demachki
- School of Medicine, Health Science Institute, Federal University of Pará, Belém, Pará Brazil
| | - Eduardo José Melo dos Santos
- Postgraduate Program in Biology of Infectious and Parasitic Agents, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
- Laboartory of Human and Medical Genetics, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
| | - Sandra Souza Lima
- Virology Laboratory, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
| | - Ricardo Ishak
- Virology Laboratory, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
- Postgraduate Program in Biology of Infectious and Parasitic Agents, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
| | - Antonio Carlos Rosário Vallinoto
- Virology Laboratory, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
- Postgraduate Program in Biology of Infectious and Parasitic Agents, Biological Science Institute, Federal University of Pará, Belém, Pará Brazil
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He H, Xu P, Wu T, Chen Y, Wang J, Qiu Y, Fan J, Guan Q, Luo Y. Reduced Capacity of Cognitive Control in Older Adults with Mild Cognitive Impairment. J Alzheimers Dis 2019; 71:185-200. [PMID: 31356201 DOI: 10.3233/jad-181006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cognitive control for the coordination of mental operations is essential in normal cognitive functioning of daily life. Although the decline of cognitive control in older adults with mild cognitive impairment (MCI) has been demonstrated, whether this decline is a core deficit in MCI remains unclear. In this study, we employed a perceptual decision-making task to estimate the capacity of cognitive control (CCC) in older adults with MCI (n = 55) and the age-, sex-, and education-matched healthy controls (HC, n = 55) selected based on a commonly used battery of ten neuropsychological tests in five cognitive domains. We found that the CCC was significantly correlated to the neuropsychological measures of the battery. The mean CCC was significantly lower in the MCI group (3.06 bps) than in the HC group (3.59 bps) and significantly lower in the amnestic MCI subgroup (2.90 bps) than in the nonamnestic MCI subgroup (3.22 bps). In detecting and classifying MCI using machine learning, the classifier with the CCC as the input feature outperformed the overall classification with neuropsychological measures in a single cognitive domain. The classification performance was significantly increased when the CCC was included as a feature in addition to measures in a single domain, and the CCC served as a key feature in optimal classifiers with inputs from multiple domains. These results support the hypothesis that the decline in cognitive control is a core deficit in MCI and suggest that the CCC may serve as a key index in the diagnosis of MCI.
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Affiliation(s)
- Hao He
- School of Psychology, Shenzhen University, Shenzhen, China.,Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, China.,Center for Neuroimaging, Shenzhen Institute of Neuroscience, Shenzhen, China.,Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, China
| | - Pengfei Xu
- School of Psychology, Shenzhen University, Shenzhen, China.,Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, China.,Center for Neuroimaging, Shenzhen Institute of Neuroscience, Shenzhen, China.,Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, China
| | - Tingting Wu
- Department of Psychology, Queens College, The City University of New York, Queens, NY, USA
| | - Yiqi Chen
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Jing Wang
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Yuehong Qiu
- School of Psychology, Shenzhen University, Shenzhen, China
| | - Jin Fan
- Department of Psychology, Queens College, The City University of New York, Queens, NY, USA
| | - Qing Guan
- School of Psychology, Shenzhen University, Shenzhen, China.,Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, China.,Center for Neuroimaging, Shenzhen Institute of Neuroscience, Shenzhen, China.,Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, China
| | - Yuejia Luo
- School of Psychology, Shenzhen University, Shenzhen, China.,Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, China.,Center for Neuroimaging, Shenzhen Institute of Neuroscience, Shenzhen, China.,Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, China
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Hsu YH, Huang CF, Lo CP, Wang TL, Yang CC, Tu MC. Frontal Assessment Battery as a Useful Tool to Differentiate Mild Cognitive Impairment due to Subcortical Ischemic Vascular Disease from Alzheimer Disease. Dement Geriatr Cogn Disord 2018; 42:331-341. [PMID: 27866203 DOI: 10.1159/000452762] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/21/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Prominent executive dysfunction can differentiate vascular dementia from Alzheimer disease (AD). However, it is unclear whether the Frontal Assessment Battery (FAB) screening tool can differentiate subcortical ischemic vascular disease (SIVD) from AD at the pre-dementia stage. In addition, the neural correlates of FAB performance have yet to be clarified. METHODS Patients with mild cognitive impairment (MCI) due to SIVD (MCI-V), MCI due to AD (MCI-A), and demographically matched controls completed the Mini-Mental State Examination, Taiwanese FAB (TFAB), Category Fluency, and Chinese Version of the Verbal Learning Test, and underwent magnetic resonance imaging. White matter hyperintensities were rated according to the Scheltens scale. RESULTS TFAB total scale and its Orthographical Fluency subtest were the only measures that could differentiate MCI-V from MCI-A. Discriminative analysis showed that Orthographical Fluency scores successfully identified 73.2% of the cases with MCI-V, with 85.0% sensitivity. Orthographical Fluency scores were specifically associated with lesion load within frontal periventricular, frontal deep white matter, and basal ganglia regions. CONCLUSION The TFAB, and especially its 1-min Orthographical Fluency subtest, is a useful screening procedure to differentiate MCI due to SIVD from MCI due to AD. The discriminative ability is probably due to frontosubcortical white matter pathologies disproportionately involved in the two disease entities.
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Affiliation(s)
- Yen-Hsuan Hsu
- Department of Psychology, National Chung Cheng University, Chiayi, Taiwan, ROC
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The Emerging Therapeutic Role of NGF in Alzheimer’s Disease. Neurochem Res 2016; 41:1211-8. [DOI: 10.1007/s11064-016-1829-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 12/08/2015] [Accepted: 01/05/2016] [Indexed: 11/29/2022]
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Nagata T, Shibata N, Shinagawa S, Nakayama R, Kuerban B, Ohnuma T, Arai H, Nakayama K, Yamada H. Genetic Association between Neurotrophin-3 Polymorphisms and Alzheimer's Disease in Japanese Patients. Dement Geriatr Cogn Dis Extra 2013; 3:272-80. [PMID: 24174922 PMCID: PMC3808222 DOI: 10.1159/000354369] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Some polymorphisms of the neurotrophin family have previously been investigated as candidate genes for Alzheimer's disease (AD). In the present study, we examined whether neurotrophin-3 (NTF-3) polymorphisms are genetic risk factors in patients with AD. METHODS From a sample of 507 subjects, we recruited 248 age-matched subjects divided into 2 groups: AD patients (n = 143) and normal controls (NCs) (n = 105). We identified 3 representative NTF-3 single nucleotide polymorphisms (SNPs): rs6332, rs6489630, and rs4930767. Next, we statistically compared the allele frequencies of each SNP between the AD and NC groups in the early-onset (<65 years) cases under a more limited age-matched condition. RESULTS We found a significant association between rs6332 and the total group of AD patients (p = 0.013) and significant associations between both rs6332 (p = 0.033) and rs6489630 (p = 0.035) and early-onset AD patients. CONCLUSION These results suggest that NTF-3 SNPs may not only be associated with AD itself, but also with early-onset AD in Japanese patients, assuming that the NTF-3 gene may have age-related effects on neurodegenerative diseases.
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Affiliation(s)
- Tomoyuki Nagata
- Department of Psychiatry, Institute of DNA Medicine, Jikei University School of Medicine, Tokyo, Japan ; Division of Molecular Genetics, Institute of DNA Medicine, Jikei University School of Medicine, Tokyo, Japan
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Nagata T, Shinagawa S, Nukariya K, Yamada H, Nakayama K. Association between BDNF polymorphism (Val66Met) and executive function in patients with amnestic mild cognitive impairment or mild Alzheimer disease. Dement Geriatr Cogn Disord 2012; 33:266-72. [PMID: 22699449 DOI: 10.1159/000339358] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/02/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In the present study, we examined whether brain-derived neurotrophic factor (BDNF) polymorphism (Val66Met) influenced the changeable executive dysfunction of patients with two separate disease stages: amnestic mild cognitive impairment (A-MCI) or mild Alzheimer disease (AD), which are comparatively similar demented conditions. METHODS Among 200 outpatients with dementia and MCI, 146 outpatients with mild AD or A-MCI were recruited and divided into two genotypic groups, valine homozygosity (Val/Val) and methionine (Met) carriers, based on the representative BDNF functional polymorphism Val66Met. Next, we compared the Frontal Assessment Battery (FAB) total and subtest scores between the two genotypic groups according to each of two different disease stages: A-MCI (n = 42) and mild AD (n = 104). RESULTS Among patients with only a mild stage of AD, the FAB total and go/no-go scores were significantly lower (p < 0.05) among the subjects with the Val/Val genotype than among the Met carriers. However, no significant differences in any other demographic variables were observed between the genotypes according to each of different disease stages. A significant interaction between Val66Met and age was not observed for the FAB scores. CONCLUSION These results suggested that the BDNF gene may significantly influence executive dysfunction, including inhibition tasks, among patients with mild-stage AD.
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Affiliation(s)
- Tomoyuki Nagata
- Department of Psychiatry, Jikei University School of Medicine, Tokyo, Japan.
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