1
|
Bregman-Yemini N, Nitzan K, Franko M, Doron R. Connecting the emotional-cognitive puzzle: The role of tyrosine kinase B (TrkB) receptor isoform imbalance in age-related emotional and cognitive impairments. Ageing Res Rev 2024; 99:102349. [PMID: 38823488 DOI: 10.1016/j.arr.2024.102349] [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: 04/14/2024] [Revised: 05/16/2024] [Accepted: 05/26/2024] [Indexed: 06/03/2024]
Abstract
Age-related cognitive and affective disorders pose significant public health challenges. Notably, emotional and cognitive symptoms co-occur across multiple age-associated conditions like normal aging, Alzheimer's disease (AD), and mood disorders such as depression and anxiety. While the intricate interplay underlying this relationship remains poorly understood, this article highlights the possibility that an imbalance between full-length (TrkB.FL) and truncated (TrkB.T1) isoforms of tyrosine kinase receptor TrkB in the neurotrophic system may significantly affect age-associated emotional and cognitive functions, by altering brain-derived neurotrophic factor (BDNF) signaling, integral to neuronal health, cognitive functions and mood regulation. While the contribution of this imbalance to pathogenesis awaits full elucidation, this review evaluates its potential mediating role, linking emotional and cognitive decline across age-related disorders The interplay between TrkB.T1 and TrkB.FL isoforms may be considered as a pivotal shared regulator underlying this complex relationship. The current review aims to synthesize current knowledge on TrkB isoform imbalance, specifically its contribution to age-related cognitive decline and mood disorders. By examining shared pathogenic pathways between aging, cognitive decline, and mood disorders through the lens of TrkB signaling, this review uncovers potential therapeutic targets not previously considered, offering a fresh perspective on combating age-related mental health issues as well as cognitive deficits.
Collapse
Affiliation(s)
- Noa Bregman-Yemini
- Department of Education and Psychology, The Open University, Israel; Department of Psychology, The Hebrew University, Israel
| | - Keren Nitzan
- Department of Education and Psychology, The Open University, Israel
| | - Motty Franko
- Department of Education and Psychology, The Open University, Israel; Department of Psychology, Ben-Gurion University, Israel
| | - Ravid Doron
- Department of Education and Psychology, The Open University, Israel.
| |
Collapse
|
2
|
Ciampa CJ, Morin TM, Murphy A, Joie RL, Landau SM, Berry AS. DAT1 and BDNF polymorphisms interact to predict Aβ and tau pathology. Neurobiol Aging 2024; 133:115-124. [PMID: 37948982 PMCID: PMC10872994 DOI: 10.1016/j.neurobiolaging.2023.10.009] [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: 05/05/2023] [Revised: 10/11/2023] [Accepted: 10/25/2023] [Indexed: 11/12/2023]
Abstract
Previous work has associated polymorphisms in the dopamine transporter gene (rs6347 in DAT1/SLC6A3) and brain derived neurotrophic factor gene (Val66Met in BDNF) with atrophy and memory decline. However, it is unclear whether these polymorphisms relate to atrophy and cognition through associations with Alzheimer's disease pathology. We tested for effects of DAT1 and BDNF polymorphisms on cross-sectional and longitudinal β-amyloid (Aβ) and tau pathology (measured with positron emission tomography (PET)), hippocampal volume, and cognition. We analyzed a sample of cognitively normal older adults (cross-sectional n = 321) from the Alzheimer's Disease Neuroimaging Initiative (ADNI). DAT1 and BDNF interacted to predict Aβ-PET, tau-PET, and hippocampal atrophy. Carriers of both "non-boptimal" DAT1 C and BDNF Met alleles demonstrated greater pathology and atrophy. Our findings provide novel links between dopamine and neurotrophic factor genes and AD pathology, consistent with previous research implicating these variants in greater risk for developing AD.
Collapse
Affiliation(s)
- Claire J Ciampa
- Department of Biology, Brandeis University, Waltham, MA 02453, USA.
| | - Thomas M Morin
- Department of Psychology, Brandeis University, Waltham, MA 02453, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Boston, MA 02155, USA
| | - Alice Murphy
- Hellen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA
| | - Renaud La Joie
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA 94158, USA
| | - Susan M Landau
- Hellen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA; Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Anne S Berry
- Department of Psychology, Brandeis University, Waltham, MA 02453, USA; Volen Center for Complex Systems, Brandeis University, Waltham, MA 02453, USA
| |
Collapse
|
3
|
Hausman-Cohen S, Bilich C, Kapoor S, Maristany E, Stefani A, Wilcox A. Genomics as a Clinical Decision Support Tool for Identifying and Addressing Modifiable Causes of Cognitive Decline and Improving Outcomes: Proof of Concept Support for This Personalized Medicine Strategy. Front Aging Neurosci 2022; 14:862362. [PMID: 35517054 PMCID: PMC9062132 DOI: 10.3389/fnagi.2022.862362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/25/2022] [Indexed: 12/02/2022] Open
Abstract
The landscape of therapeutics for mild cognitive impairment and dementia is quite limited. While many single-agent trials of pharmaceuticals have been conducted, these trials have repeatedly been unable to show improvement in cognition. It is hypothesized that because Alzheimer’s, like many other chronic illnesses, is not a monogenic illness, but is instead caused by the downstream effects of an individual’s genetic variants interacting with each other, the environment, and lifestyle, that improving outcomes will require a personalized, precision medicine approach. This approach requires identifying and then addressing contributing genomic and other factors specific to each individual in a simultaneous fashion. Until recently, the utility of genomics as part of clinical decision-making for Alzheimer’s and cognitive decline has been limited by the lack of availability of a genomic platform designed specifically to evaluate factors contributing to cognitive decline and how to respond to these factors The clinical decision support (CDS) platform used in the cases presented focuses on common variants that relate to topics including, but not limited to brain inflammation, amyloid processing, nutrient carriers, brain ischemia, oxidative stress, and detoxification pathways. Potential interventions based on the scientific literature were included in the CDS, but the final decision on what interventions to apply were chosen by each patient’s physician. Interventions included supplements with “generally regarded as safe (GRAS)” rating, along with targeted diet and lifestyle modifications. We hypothesize that a personalized genomically targeted approach can improve outcomes for individuals with mild cognitive impairment who are at high risk of Alzheimer’s. The cases presented in this report represent a subset of cases from three physicians’ offices and are meant to provide initial proof of concept data demonstrating the efficacy of this method and provide support for this hypothesis. These patients were at elevated risk for Alzheimer’s due to their apolipoprotein E ε4 status. While further prospective and controlled trials need to be done, initial case reports are encouraging and lend support to this hypothesis of the benefit of a genomically targeted personalized medicine approach to improve outcomes in individuals with cognitive decline who are at high risk for Alzheimer’s.
Collapse
|
4
|
Yıldız M, Bingul M, Zorlu Y, Saglam MF, Boga M, Temel M, Koca MS, Kandemir H, Sengul IF. Dimethoxyindoles based thiosemicarbazones as multi-target agents; synthesis, crystal interactions, biological activity and molecular modeling. Bioorg Chem 2022; 120:105647. [PMID: 35121556 DOI: 10.1016/j.bioorg.2022.105647] [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: 08/19/2021] [Revised: 01/05/2022] [Accepted: 01/25/2022] [Indexed: 01/14/2023]
Abstract
Alzheimer's disease (AD) is known as one of the most devastating neurodegenerative disease diagnosed for the old-aged people and cholinesterase inhibitors (ChEI) can be used as an effective palliative treatment for AD. A range of novel monomeric and dimeric indole based thiosemicarbazone derivatives 17-28 was synthesized in order to target cholinesterases (ChE). Biological importance of the targeted compounds 17-28 was investigated by employing the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes along with three different antioxidant property determination assays, namely DPPH free radical scavenging, ABTS cationic radical decolarization, and CUPRAC cupric reducing antioxidant capacity. The compounds 18 and 19 displayed the best inhibitor activity against BChE with IC50 values of 7.42 and 1.95 μM, respectively. The antioxidant potentials were found to be moderate for DPPH and ABTS assays and the compounds 28 and 18 were the most potent candidates for both antioxidant assays. Cupric reducing capacity was the most promising assay and the compounds 25, 26 and 28 provided better inhibition values than all the standards. Further binding mode and affinity studies performed by molecular docking and molecular dynamics simulations. Accordingly, the compound 19 is the most plausible candidate that can compete with galantamine (GNT), a common pharmaceutics targeting both cholinesterase enzymes.
Collapse
Affiliation(s)
- Minhal Yıldız
- Department of Chemistry, Faculty of Art and Science, Tekirdag Namık Kemal University, Turkey
| | - Murat Bingul
- Department of Basic Pharmaceutical Chemistry, Faculty of Pharmacy, Dicle University, Diyarbakır 21280, Turkey
| | - Yunus Zorlu
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| | - Mehmet F Saglam
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| | - Mehmet Boga
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, Diyarbakır 21280, Turkey
| | - Mutesir Temel
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| | - Mehmet Serdar Koca
- Department of Molecular Biology and Genetics, Faculty of Science, Gebze Technical University, Kocaeli, Turkey
| | - Hakan Kandemir
- Department of Chemistry, Faculty of Art and Science, Tekirdag Namık Kemal University, Turkey
| | - Ibrahim F Sengul
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, Turkey.
| |
Collapse
|
5
|
Wang CC, Huang CY, Lee MC, Tsai DJ, Wu CC, Su SL. Genetic association between TNF-α G-308A and osteoarthritis in Asians: A case-control study and meta-analysis. PLoS One 2021; 16:e0259561. [PMID: 34735544 PMCID: PMC8568107 DOI: 10.1371/journal.pone.0259561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/22/2021] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is an important health issue in elderly people. Many studies have suggested that genetic factors are important risk factors for OA, of which tumor necrosis factor-α (TNF-α) is one of the most examined genes. Moreover, several studies have investigated the relationship between TNF-α G-308A polymorphisms and OA risk, but consistent results have not been obtained. OBJECTIVE This study examines the association between TNF-α G-308A polymorphisms and knee OA. Moreover, meta-analysis and trial sequential analysis (TSA) was used to determine whether this is a susceptibility gene for knee OA. METHODS Between 2015 and 2019, 591 knee OA cases and 536 healthy controls were recruited. The Kellgren-Lawrence grading system was used to identify the knee OA cases. A meta-analysis was conducted including related studies published until 2020 from PubMed, Embase, and previous meta-analysis to improve the evidence level of the current study. The results were expressed as odds ratios (ORs) with corresponding 95% confidence intervals (CI) to evaluate the effect of this polymorphism on knee OA risk. The TSA was used to estimate the sample sizes required in this issue. RESULTS A nonsignificant association was found between the AA genotype and knee OA [adjusted OR, 0.84; 95% CI, 0.62-1.15) in the recessive model] in the present case-control study, and analysis of other genetic models showed a similar trend. After adding the critical case-control samples for Asians, the TNF-α G-308A, AA genotype exhibited 2.57 times more risk of developing arthritis when compared with the GG + GA genotype (95% CI, 1.56-4.23), and the cumulative samples for TSA (n = 2182) were sufficient to obtain a definite conclusion. CONCLUSIONS The results of this meta-analysis revealed that the TNF-α G-308A, AA genotype is a susceptible genotype for OA in the Asian population. This study integrated all current evidence to arrive at this conclusion, suggesting that future studies on Asians are not required.
Collapse
Affiliation(s)
- Chih-Chien Wang
- Department of Orthopedics, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Chih-Yun Huang
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| | - Meng-Chang Lee
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| | - Dung-Jang Tsai
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
- Artificial Intelligence of Things Center, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
| | - Chia-Chun Wu
- Department of Orthopedics, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan
| | - Sui-Lung Su
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| |
Collapse
|
6
|
Hsiao PJ, Chiu CC, Tsai DJ, Ko PS, Chen YK, Cheng H, Su W, Lu KC, Su SL. Association between nitric oxide synthase T-786C genetic polymorphism and chronic kidney disease: Meta-analysis incorporating trial sequential analysis. PLoS One 2021; 16:e0258789. [PMID: 34662360 PMCID: PMC8523046 DOI: 10.1371/journal.pone.0258789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 10/05/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Several meta-analyses of the relationship between endothelial nitric oxide synthase (eNOS) T-786C gene polymorphism and chronic kidney disease (CKD) have been published. However, the results of these studies were inconsistent, and it is undetermined whether sample sizes are sufficient to reach a definite conclusion. OBJECTIVE To elucidate the relationship between T-786C and CKD by combining previous studies with our case-control sample and incorporate trial sequential analysis (TSA) to verify whether the sample size is adequate to draw a definite conclusion. METHODS PubMed and Embase databases were searched for relevant articles on eNOS T-786C and CKD before February 28, 2021. TSA was also incorporated to ascertain a conclusion. A total of 558 hemodialysis cases in the case-control study was recruited from nine dialysis centers in the northern area of Taiwan in 2020. Additionally, 640 healthy subjects of the control group, with estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73 m2, were selected from participants of the annual elderly health examination program at the Tri-Service General Hospital. The functional analysis was based on eQTL data from GTExPortal. RESULTS After screening with eligibility criteria, 15 papers were included and eventually combined in a meta-analysis. The result of the TSA showed that the sample size for Caucasians was adequate to ascertain the correlation between eNOS T-786C and CKD but was insufficient for Asians. Therefore, we added our case-control samples (n = 1198), though not associated with CKD (odds ratio [OR] = 1.01, 95% confidence interval [CI] = 0.69-1.46), into a meta-analysis, which supported that eNOS T-786C was significantly associated with CKD in Asians (OR = 1.39, 95% CI = 1.04-1.85) by using an adequate cumulative sample size (n = 4572) analyzed by TSA. Data of eQTL from GTEx showed that T-786C with the C minor allele exhibited relatively lower eNOS mRNA expression in whole blood, indicating the hazardous role of eNOS T-786C in CKD. CONCLUSIONS eNOS T-786C genetic polymorphism was of conclusive significance in the association with CKD among Asians in our meta-analysis. Our case-control samples play a decisive role in changing conclusions from indefinite to definite.
Collapse
Affiliation(s)
- Po-Jen Hsiao
- Division of Nephrology, Department of Internal Medicine, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan, R.O.C.
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Department of Life Sciences, National Central University, Taoyuan, Taiwan, R.O.C.
- Big Data Research Center, Fu-Jen Catholic University, New Taipei City, Taiwan, R.O.C.
| | - Chih-Chien Chiu
- Division of Infectious Diseases, Department of Internal Medicine, Taoyuan Armed Forces General Hospital, National Defense Medical Center, Taoyuan, Taiwan, R.O.C.
| | - Dung-Jang Tsai
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Pi-Shao Ko
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Ying-Kai Chen
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Division of Nephrology, Department of Medicine, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan, R.O.C.
| | - Hao Cheng
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Wen Su
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Kuo-Cheng Lu
- Division of Nephrology, Department of Medicine, Fu-Jen Catholic University Hospital, School of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan, R.O.C.
| | - Sui-Lung Su
- School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| |
Collapse
|
7
|
Li D, Tian L, Wang X, Chen M. Macular corneal dystrophy related to novel mutations of CHST6 in a Chinese family and clinical observation after penetrating keratoplasty. BMC Med Genomics 2021; 14:247. [PMID: 34645431 PMCID: PMC8513235 DOI: 10.1186/s12920-021-01095-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 09/28/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Macular corneal dystrophy (MCD) is a rare corneal stromal dystrophy with bilateral progressive vision loss. The pathogenic gene of MCD is carbohydrate sulfotransferase 6 (CHST6). Herein, we report a novel missense mutation and a rare exon deletion mutation in the CHST6 gene in a Chinese family with MCD. METHODS Genomic DNA was extracted from the peripheral blood, and next generation sequencing was used to analyse the gene sequence. The pathogenic mutations were identified in all affected family members. The proband successively received binocular penetrating keratoplasty (PKP), and the corneas were examined by histopathology and colloidal iron staining to prove the diagnosis. A long-term follow-up was made to observe the changes after PKP. RESULTS Genetic analysis demonstrated hemizygous mutations in the proband, including a novel c.520A>C (p.K174Q) missense mutation and a rarely reported exon 3 deletion mutation, which were co-segregated with the MCD phenotypes in the pedigree. The positive colloidal iron staining confirmed the diagnosis of MCD in the proband. However, the clinical phenotype and pathological manifestation of both eyes were different from each other because of complicated keratitis in the left eye. During the nine years of follow-up, visual acuity was improved significantly, and the cornea was transparent without rejection and postoperative recurrence in both eyes. CONCLUSIONS The novel hemizygous mutations were thought to contribute to the loss of CHST6 function, which induced typical clinical and pathological features of MCD. PKP was an effective treatment for MCD.
Collapse
Affiliation(s)
- Dewei Li
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 5 Yan'erdao Road, Qingdao, 266071, China
| | - Le Tian
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 5 Yan'erdao Road, Qingdao, 266071, China
| | - Xiaochuan Wang
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 5 Yan'erdao Road, Qingdao, 266071, China
| | - Min Chen
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China.
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, 5 Yan'erdao Road, Qingdao, 266071, China.
| |
Collapse
|
8
|
Bundo M, de Schrijver E, Federspiel A, Toreti A, Xoplaki E, Luterbacher J, Franco OH, Müller T, Vicedo-Cabrera AM. Ambient temperature and mental health hospitalizations in Bern, Switzerland: A 45-year time-series study. PLoS One 2021; 16:e0258302. [PMID: 34637463 PMCID: PMC8509878 DOI: 10.1371/journal.pone.0258302] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 09/23/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Psychiatric disorders constitute a major public health concern that are associated with substantial health and socioeconomic burden. Psychiatric patients may be more vulnerable to high temperatures, which under current climate change projections will most likely increase the burden of this public health concern. OBJECTIVE This study investigated the short-term association between ambient temperature and mental health hospitalizations in Bern, Switzerland. METHODS Daily hospitalizations for mental disorders between 1973 and 2017 were collected from the University Hospital of Psychiatry and Psychotherapy in Bern. Population-weighted daily mean ambient temperatures were derived for the catchment area of the hospital from 2.3-km gridded weather maps. Conditional quasi-Poisson regression with distributed lag linear models were applied to assess the association up to three days after the exposure. Stratified analyses were conducted by age, sex, and subdiagnosis, and by subperiods (1973-1989 and 1990-2017). Additional subanalyses were performed to assess whether larger risks were found during the warm season or were due to heatwaves. RESULTS The study included a total number of 88,996 hospitalizations. Overall, the hospitalization risk increased linearly by 4.0% (95% CI 2.0%, 7.0%) for every 10°C increase in mean daily temperature. No evidence of a nonlinear association or larger risks during the warm season or heatwaves was found. Similar estimates were found across for all sex and age categories, and larger risks were found for hospitalizations related to developmental disorders (29.0%; 95% CI 9.0%, 54.0%), schizophrenia (10.0%; 95% CI 4.0%, 15.0%), and for the later rather than the earlier period (5.0%; 95% CI 2.0%, 8.0% vs. 2.0%; 95% CI -3.0%, 8.0%). CONCLUSIONS Our findings suggest that increasing temperatures could negatively affect mental status in psychiatric patients. Specific public health policies are urgently needed to protect this vulnerable population from the effects of climate change.
Collapse
Affiliation(s)
- Marvin Bundo
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Evan de Schrijver
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Andrea Federspiel
- Translational Research Center (TRC), University Hospital of Psychiatry and Psychotherapy University of Bern, Bern, Switzerland
| | - Andrea Toreti
- European Commission, Joint Research Centre, Ispra, Italy
| | - Elena Xoplaki
- Department of Geography, Climatology, Climate Dynamics and Climate Change, Justus Liebig University Giessen, Giessen, Germany
- Center for International Development and Environmental Research (ZEU), Justus Liebig University Giessen, Giessen, Germany
| | - Jürg Luterbacher
- World Meteorological Organization (WMO), Science and Innovation Department, Geneva, Switzerland
| | - Oscar H. Franco
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Thomas Müller
- Translational Research Center (TRC), University Hospital of Psychiatry and Psychotherapy University of Bern, Bern, Switzerland
- Privatclinic Meiringen, Meiringen, Switzerland
| | - Ana M. Vicedo-Cabrera
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
- Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
| |
Collapse
|
9
|
Factors associated with health intentions and behaviour among health checkup participants in Japan. Sci Rep 2021; 11:19761. [PMID: 34611263 PMCID: PMC8492688 DOI: 10.1038/s41598-021-99303-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 09/15/2021] [Indexed: 11/29/2022] Open
Abstract
Health intentions and behaviours are essential for improving the health of individuals and society. This study used cross-sectional data from 20,155 health checkup participants in the Yamagata study to identify factors associated with health intentions and behaviours. Information regarding the current level of health intentions and behaviours was collected using a baseline survey questionnaire. Participants were categorised into three groups: having no intention (no intention), having intentions to improve but not acting on them (intention), and already active (action). The associations between background factors and the presence/absence of health intentions and behaviours were assessed using logistic regression analysis. Of the participants, 35.4%, 37.7%, and 26.9% belonged to the no intention, intention, and action groups, respectively. Multivariate analysis revealed that the factors associated with health intentions were being young, being female, longer duration of education, higher body mass index and abdominal circumference, diabetes, and dyslipidaemia. The factors associated with health behaviours were being older and male, not consuming alcohol, not smoking, performing daily exercise, and having diabetes. These results indicate that health guidance considering background factors, including age, gender, education, and comorbidities, may be useful for effectively promoting health intentions and health behaviours in the Japanese population.
Collapse
|
10
|
Song D, Hong L, Zhang ZF, Xu JH, Zhang HQ, Huang XL, Du J. The FSHR G-29A variant is not associated with the ovarian response to exogenous FSH stimulation. Am J Reprod Immunol 2021; 86:e13500. [PMID: 34558137 DOI: 10.1111/aji.13500] [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: 06/07/2021] [Revised: 09/13/2021] [Accepted: 09/20/2021] [Indexed: 11/28/2022] Open
Abstract
A common genetic variant in the follicle stimulating hormone receptor gene (FSHR) 5'-untranslated region has been previously reported to influence FSHR gene expression. However, studies on the ovarian response to exogenous gonadotropin stimulation are limited. The aim of this study was to evaluate the association of variants at positions -29 of the FSHR gene with the ovarian response to exogenous FSH stimulation in Chinese women. The genotypes of the FSHR gene were assayed using the Sequenom MassARRAY system. Total RNA and protein was extracted from granulosa cells, and FSHR expression at the mRNA and protein levels was assessed using quantitative PCR and western blotting. Our data revealed that there was no association between the FSHR genotype at the -29 position and the outcome of controlled ovarian stimulation. The expression of FSHR, at both the mRNA and protein levels, was similar amongst the different FSHR genotypes assessed, but was significantly reduced in the low responders. These results indicate that the variants caused by mutations at position -29 are not associated with ovarian response, and the low ovarian response to gonadotropin stimulation may be caused by decreased FSHR expression.
Collapse
Affiliation(s)
- Di Song
- Naval Medical University, Changhai Hospital, Shanghai, China
| | - Ling Hong
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhao-Feng Zhang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, China
| | - Jian-Hua Xu
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, China
| | - Hui-Qin Zhang
- Naval Medical University, Changhai Hospital, Shanghai, China
| | - Xian-Liang Huang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, China.,Shanghai Institute of Planned Parenthood Research Hospital, Shanghai, China
| | - Jing Du
- NHC Key Lab of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, China
| |
Collapse
|
11
|
Chen H, Ding X, Ding E, Chen M, Wang H, Yang G, Zhu B. A missense variant rs2585405 in clock gene PER1 is associated with the increased risk of noise-induced hearing loss in a Chinese occupational population. BMC Med Genomics 2021; 14:221. [PMID: 34493277 PMCID: PMC8425122 DOI: 10.1186/s12920-021-01075-x] [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: 08/02/2021] [Accepted: 08/31/2021] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To investigate the potential association of cochlear clock genes (CRY1, CRY2, PER1, and PER2), the DNF gene (brain-derived neurotrophic factor), and the NTF3 gene (neurotrophin3) with susceptivity to noise-induced hearing loss (NIHL) among Chinese noise-exposed workers. METHODS A nested case-control study was performed with 2056 noise-exposed workers from a chemical fiber factory and an energy company who underwent occupational health examinations in 2019 as study subjects. Propensity score matching was conducted to screen cases and controls by matching sex, age, and the consumption of tobacco and alcohol. A total of 1269 participants were enrolled. Then, general information and noise exposure of the study subjects were obtained through a questionnaire survey and on-site noise detection. According to the results of audiological evaluations, the participants were divided into the case group (n = 432, high-frequency threshold shift > 25 dB) and the matched control group (n = 837, high-frequency threshold shift ≤ 25 dB) by propensity score matching. Genotyping for PER1 rs2253820 and rs2585405; PER2 rs56386336 and rs934945; CRY1 rs1056560 and rs3809236; CRY2 rs2292910 and rs6798; BDNF rs11030099, rs7124442 and rs6265; and NTF3 rs1805149 was conducted using the TaqMan-PCR technique. RESULTS In the dominant model and the co-dominant model, the distribution of PER1 rs2585405 genotypes between the case group and the control group was significantly different (P = 0.03, P = 0.01). The NIHL risk of the subjects with the GC genotype was 1.41 times the risk of those carrying the GG genotype (95% confidence interval (CI) of odds ratio (OR): 1.01-1.96), and the NIHL risk of the subjects with the CC genotype was 0.93 times the risk of those carrying the GG genotype (95%CI of OR: 0.71-1.21). After the noise exposure period and noise exposure intensities were stratified, in the co-dominant model, the adjusted OR values for noise intensities of ≤ 85 was 1.23 (95%CI: 0.99-1.53). In the dominant model, the adjusted OR values for noise exposure periods of ≤ 16 years and noise intensities of ≤ 85 were 1.88 (95%CI: 1.03-3.42) and 1.64 (95%CI: 1.12-2.38), respectively. CONCLUSION The CC/CG genotype of rs2585405 in the PER1 gene was identified as a potential risk factor for NIHL in Chinese noise-exposed workers, and interaction between rs2585405 and high temperature was found to be associated with NIHL risk.
Collapse
Affiliation(s)
- Hao Chen
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Xuexue Ding
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Enmin Ding
- Institute of Occupational Disease Prevention, Jiangsu Province Center for Disease Prevention and Control, Nanjing, 21009, Jiangsu, China
| | - Mengyao Chen
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 210000, Jiangsu, China
| | - Huimin Wang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, 210003, Jiangsu, China
| | - Guangzhi Yang
- Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing, 210003, Jiangsu, China
| | - Baoli Zhu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 210000, Jiangsu, China. .,Institute of Occupational Disease Prevention, Jiangsu Province Center for Disease Prevention and Control, Nanjing, 21009, Jiangsu, China.
| |
Collapse
|
12
|
Nedic Erjavec G, Nikolac Perkovic M, Tudor L, Uzun S, Kovacic Petrovic Z, Konjevod M, Sagud M, Kozumplik O, Svob Strac D, Peraica T, Mimica N, Havelka Mestrovic A, Zilic D, Pivac N. Moderating Effects of BDNF Genetic Variants and Smoking on Cognition in PTSD Veterans. Biomolecules 2021; 11:biom11050641. [PMID: 33926045 PMCID: PMC8146493 DOI: 10.3390/biom11050641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/15/2021] [Accepted: 04/24/2021] [Indexed: 12/21/2022] Open
Abstract
Posttraumatic stress disorder (PTSD) is frequently associated with cognitive disturbances and high prevalence of smoking. This study evaluated cognition in war veterans with PTSD and control subjects, controlled for the effect of smoking and brain derived neurotrophic factor (BDNF) rs6265 and rs56164415 genotypes/alleles. Study included 643 male war veterans with combat related PTSD and 120 healthy controls. Genotyping was done by real time PCR. Cognitive disturbances were evaluated using the Positive and Negative Syndrome Scale (PANSS) cognition subscale and the Rey-Osterrieth Complex Figure (ROCF) test scores. Diagnosis (p < 0.001), BDNF rs56164415 (p = 0.011) and smoking (p = 0.028) were significant predictors of the cognitive decline in subjects with PTSD. BDNF rs56164415 T alleles were more frequently found in subjects with PTSD, smokers and non-smokers, with impaired cognition, i.e., with the higher PANSS cognition subscale scores and with the lower ROCF immediate recall test scores. Presence of one or two BDNF rs56164415 T alleles was related to cognitive decline in PTSD. The T allele carriers with PTSD had advanced cognitive deterioration in smokers and nonsmokers with PTSD, and worse short-term visual memory function. Our findings emphasize the role of the BDNF rs56164415 T allele and smoking in cognitive dysfunction in war veterans with PTSD.
Collapse
Affiliation(s)
- Gordana Nedic Erjavec
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
| | - Matea Nikolac Perkovic
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
| | - Lucija Tudor
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
| | - Suzana Uzun
- Department for Biological Psychiatry and Psychogeriatrics, University Psychiatric Hospital Vrapce, 10090 Zagreb, Croatia; (S.U.); (Z.K.P.); (O.K.); (N.M.)
- School of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Zrnka Kovacic Petrovic
- Department for Biological Psychiatry and Psychogeriatrics, University Psychiatric Hospital Vrapce, 10090 Zagreb, Croatia; (S.U.); (Z.K.P.); (O.K.); (N.M.)
- School of Medicine, The University of Zagreb, 10000 Zagreb, Croatia;
| | - Marcela Konjevod
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
| | - Marina Sagud
- School of Medicine, The University of Zagreb, 10000 Zagreb, Croatia;
- Department of Psychiatry, University Hospital Center Zagreb, 10000 Zagreb, Croatia
| | - Oliver Kozumplik
- Department for Biological Psychiatry and Psychogeriatrics, University Psychiatric Hospital Vrapce, 10090 Zagreb, Croatia; (S.U.); (Z.K.P.); (O.K.); (N.M.)
- School of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Dubravka Svob Strac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
| | - Tina Peraica
- Department of Psychiatry, University Hospital Dubrava, 10000 Zagreb, Croatia;
| | - Ninoslav Mimica
- Department for Biological Psychiatry and Psychogeriatrics, University Psychiatric Hospital Vrapce, 10090 Zagreb, Croatia; (S.U.); (Z.K.P.); (O.K.); (N.M.)
- School of Medicine, The University of Zagreb, 10000 Zagreb, Croatia;
| | | | | | - Nela Pivac
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (G.N.E.); (M.N.P.); (L.T.); (M.K.); (D.S.S.)
- Correspondence: ; Tel.: +385-145-712-07
| |
Collapse
|
13
|
Galle S, Licher S, Milders M, Deijen JB, Scherder E, Drent M, Ikram A, van Duijn CM. Plasma Brain-Derived Neurotropic Factor Levels Are Associated with Aging and Smoking But Not with Future Dementia in the Rotterdam Study. J Alzheimers Dis 2021; 80:1139-1149. [PMID: 33646145 PMCID: PMC8150496 DOI: 10.3233/jad-200371] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background: Brain-derived neurotropic factor (BDNF) plays a vital role in neuronal survival and plasticity and facilitates long-term potentiation, essential for memory. Alterations in BDNF signaling have been associated with cognitive impairment, dementia, and Alzheimer’s disease. Although peripheral BDNF levels are reduced in dementia patients, it is unclear whether changes in BDNF levels precede or follow dementia onset. Objective: In the present study, we examined the association between BDNF plasma levels and dementia risk over a follow-up period of up to 16 years. Methods: Plasma BDNF levels were assessed in 758 participants of the Rotterdam Study. Dementia was assessed from baseline (1997–1999) to follow-up until January 2016. Associations of plasma BDNF and incident dementia were assessed with Cox proportional hazards models, adjusted for age and sex. Associations between plasma BDNF and lifestyle and metabolic factors are investigated using linear regression. Results: During a follow up of 3,286 person-years, 131 participants developed dementia, of whom 104 had Alzheimer’s disease. We did not find an association between plasma BDNF and risk of dementia (adjusted hazard ratio 0.99; 95%CI 0.84–1.16). BDNF levels were positively associated with age (B = 0.003, SD = 0.001, p = 0.002), smoking (B = 0.08, SE = 0.01, p = < 0.001), and female sex (B = 0.03, SE = 0.01, p = 0.03), but not with physical activity level (B = –0.01, SE = 0.01, p = 0.06). Conclusion: The findings suggest that peripheral BDNF levels are not associated with an increased risk of dementia.
Collapse
Affiliation(s)
- Sara Galle
- Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Silvan Licher
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Maarten Milders
- Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jan Berend Deijen
- Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Hersencentrum Mental Health Institute, Amsterdam, The Netherlands
| | - Erik Scherder
- Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Madeleine Drent
- Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,Department of Internal Medicine, Endocrinology Section, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - Arfan Ikram
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Cornelia M van Duijn
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands.,Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.,Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Oxford, United Kingdom
| |
Collapse
|
14
|
Urbina-Varela R, Soto-Espinoza MI, Vargas R, Quiñones L, Del Campo A. Influence of BDNF Genetic Polymorphisms in the Pathophysiology of Aging-related Diseases. Aging Dis 2020; 11:1513-1526. [PMID: 33269104 PMCID: PMC7673859 DOI: 10.14336/ad.2020.0310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/10/2020] [Indexed: 12/12/2022] Open
Abstract
For the first time in history, most of the population has a life expectancy equal or greater than 60 years. By the year 2050, it is expected that the world population in that age range will reach 2000 million, an increase of 900 million with respect to 2015, which poses new challenges for health systems. In this way, it is relevant to analyze the most common diseases associated with the aging process, namely Alzheimer´s disease, Parkinson Disease and Type II Diabetes, some of which may have a common genetic component that can be detected before manifesting, in order to delay their progress. Genetic inheritance and epigenetics are factors that could be linked in the development of these pathologies. Some researchers indicate that the BDNF gene is a common factor of these diseases, and apparently some of its polymorphisms favor the progression of them. In this regard, alterations in the level of BDNF expression and secretion, due to polymorphisms, could be linked to the development and/or progression of neurodegenerative and metabolic disorders. In this review we will deepen on the different polymorphisms in the BDNF gene and their possible association with age-related pathologies, to open the possibilities of potential therapeutic targets.
Collapse
Affiliation(s)
- Rodrigo Urbina-Varela
- 1Laboratorio de Fisiología y Bioenergética Celular, Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Romina Vargas
- 1Laboratorio de Fisiología y Bioenergética Celular, Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Luis Quiñones
- 3Laboratorio de Carcinogenesis Química y Farmacogenética (CQF), Departamento de Oncología Básico-Clínica, Facultad de Medicina, Universidad de Chile
| | - Andrea Del Campo
- 1Laboratorio de Fisiología y Bioenergética Celular, Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
15
|
Brain-derived neurotrophic factor (BDNF) levels in first-episode schizophrenia and healthy controls: A comparative study. Asian J Psychiatr 2020; 54:102370. [PMID: 33271690 DOI: 10.1016/j.ajp.2020.102370] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 08/02/2020] [Accepted: 08/21/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Abnormalities in brain development and plasticity have been associated with the pathophysiology of schizophrenia. The role of brain-derived neurotrophic factor (BDNF) in schizophrenia is the recent area of interest because it regulates neurogenesis. The current study aimed to assess and compare serum BDNF levels between first-episode schizophrenia patients and healthy controls, and evaluate its correlation with the socio-demographic and clinical variables. METHODOLOGY It was a cross-sectional comparative study for the assessment of serum BDNF levels between patients with first-episode schizophrenia (N=50) and healthy controls (N-50) conducted in the Department of Psychiatry at a tertiary care public hospital attached to a medical school in North India. Participants were assessed for the socio-demographic parameters, nicotine dependence, and clinical details using structured scales. Serum BDNF level estimated using the sandwich ELISA technique. The comparison between the groups was done by using a Student t-test or chi-square test. Spearman correlation was performed between mean BDNF scores and demographic or illness variables in both first-episode schizophrenia and healthy control groups. RESULTS There was a significantly lower mean score of total serum BDNF levels in first-episode schizophrenia patients as compared to controls (8.44 ± 1.54 vs 10.44 ± 2.04; t = 5.52, p < 0.001; 95% CI = 1.28-2.71). The total FTND scores for smokeless tobacco use were negatively correlated to BDNF levels among healthy controls (r=-0.30, p=0.03) as well as in the first-episode schizophrenia group (r=-0.32, p= 0.04). None of the other illness-related variables were correlated to serum BDNF values in the first episode schizophrenia group. CONCLUSION Individuals with first-episode schizophrenia have lower serum BDNF levels than healthy controls. The illness-related factors such as duration of untreated psychosis or psychopathology were not correlated with BDNF levels. Thus abnormal signaling of BDNF can lead to abnormal brain functioning which can make an individual more susceptible to schizophrenia.
Collapse
|
16
|
Chen Q, Ma H, Guo X, Liu J, Gui T, Gai Z. Farnesoid X Receptor (FXR) Aggravates Amyloid-β-Triggered Apoptosis by Modulating the cAMP-Response Element-Binding Protein (CREB)/Brain-Derived Neurotrophic Factor (BDNF) Pathway In Vitro. Med Sci Monit 2019; 25:9335-9345. [PMID: 31812977 PMCID: PMC6918812 DOI: 10.12659/msm.920065] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Alzheimer’s disease (AD), which results in cognitive deficits, usually occurs in older people and is mainly caused by amyloid beta (Aβ) deposits and neurofibrillary tangles. The bile acid receptor, farnesoid X receptor (FXR), has been extensively studied in cardiovascular diseases and digestive diseases. However, the role of FXR in AD is not yet understood. The purpose of the present study was to investigate the mechanism of FXR function in AD. Material/Methods Lentivirus infection, flow cytometry, real-time PCR, and western blotting were used to detect the gain or loss of FXR in cell apoptosis induced by Aβ. Co-immunoprecipitation was used to analyze the molecular partners involved in Aβ-induced apoptosis. Results We found that the mRNA and protein expression of FXR was enhanced in Aβ-triggered neuronal apoptosis in differentiated SH-SY5Y cells and in mouse hippocampal neurons. Overexpression of FXR aggravated Aβ-triggered neuronal apoptosis in differentiated SH-SY5Y cells, and this effect was further increased by treatment with the FXR agonist 6ECDCA. Molecular mechanism analysis by co-immunoprecipitation and immunoblotting revealed that FXR interacted with the cAMP-response element-binding protein (CREB), leading to decreased CREB and brain-derived neurotrophic factor (BDNF) protein levels. Low expression of FXR mostly reversed the Aβ-triggered neuronal apoptosis effect and prevented the reduction in CREB and BDNF. Conclusions These data suggest that FXR regulates Aβ-induced neuronal apoptosis, which may be dependent on the CREB/BDNF signaling pathway in vitro.
Collapse
Affiliation(s)
- Qingfa Chen
- Institute for Tissue Engineering and Regenerative Medicine, Liaocheng University/Liaocheng People's Hospital, Liaocheng, Shandong, China (mainland)
| | - Hongling Ma
- Department of Neurology, Liaocheng People's Hospital, Liaocheng, Shandong, China (mainland)
| | - Xuewen Guo
- Department of Neurology, Dongchangfu People's Hospital/Second People's Hospital of Liaocheng University, Liaocheng, Shandong, China (mainland)
| | - Jia Liu
- Department of Neurology, Liaocheng People's Hospital, Liaocheng, Shandong, China (mainland)
| | - Ting Gui
- Key Laboratory of Traditional Chinese Medicine for Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China (mainland)
| | - Zhibo Gai
- Joint Pharmacology Center, Liaocheng People's Hospital, Liaocheng, Shandong, China (mainland).,Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| |
Collapse
|
17
|
Baumann K, Kordić L, Močibob M, Šinko G, Tomić S. Synthesis and In Vitro Screening of Novel Heterocyclic β-d-Gluco- and β-d-Galactoconjugates as Butyrylcholinesterase Inhibitors. Molecules 2019; 24:molecules24152833. [PMID: 31382668 PMCID: PMC6695897 DOI: 10.3390/molecules24152833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/01/2019] [Accepted: 08/03/2019] [Indexed: 12/04/2022] Open
Abstract
The development of selective butyrylcholinesterase (BChE) inhibitors may improve the treatment of Alzheimer’s disease by increasing lower synaptic levels of the neurotransmitter acetylcholine, which is hydrolysed by acetylcholinesterase, as well as by overexpressed BChE. An increase in the synaptic levels of acetylcholine leads to normal cholinergic neurotransmission and improved cognitive functions. A series of 14 novel heterocyclic β-d-gluco- and β-d-galactoconjugates were designed and screened for inhibitory activity against BChE. In the kinetic studies, 4 out of 14 compounds showed an inhibitory effect towards BChE, with benzimidazolium and 1-benzylbenzimidazolium substituted β-d-gluco- and β-d-galacto-derivatives in a 10–50 micromolar range. The analysis performed by molecular modelling indicated key residues of the BChE active site, which contributed to a higher affinity toward the selected compounds. Sugar moiety in the inhibitor should enable better blood–brain barrier permeability, and thus increase bioavailability in the central nervous system of these compounds.
Collapse
Affiliation(s)
- Krešimir Baumann
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Lorena Kordić
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Marko Močibob
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Goran Šinko
- Biochemistry and Organic Analytical Chemistry Unit, Institute for Medical Research and Occupational Health, P.O. Box 291, HR-10001 Zagreb, Croatia.
| | - Srđanka Tomić
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| |
Collapse
|
18
|
Shen J, Vasaikar S, Zhang B. DLAD4U: deriving and prioritizing disease lists from PubMed literature. BMC Bioinformatics 2018; 19:495. [PMID: 30591010 PMCID: PMC6309061 DOI: 10.1186/s12859-018-2463-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background Due to recent technology advancements, disease related knowledge is growing rapidly. It becomes nontrivial to go through all published literature to identify associations between human diseases and genetic, environmental, and life style factors, disease symptoms, and treatment strategies. Here we report DLAD4U (Disease List Automatically Derived For You), an efficient, accurate and easy-to-use disease search engine based on PubMed literature. Results DLAD4U uses the eSearch and eFetch APIs from the National Center for Biotechnology Information (NCBI) to find publications related to a query and to identify diseases from the retrieved publications. The hypergeometric test was used to prioritize identified diseases for displaying to users. DLAD4U accepts any valid queries for PubMed, and the output results include a ranked disease list, information associated with each disease, chronologically-ordered supporting publications, a summary of the run, and links for file export. DLAD4U outperformed other disease search engines in our comparative evaluation using selected genes and drugs as query terms and manually curated data as “gold standard”. For 100 genes that are associated with only one disease in the gold standard, the Mean Average Precision (MAP) measure from DLAD4U was 0.77, which clearly outperformed other tools. For 10 genes that are associated with multiple diseases in the gold standard, the mean precision, recall and F-measure scores from DLAD4U were always higher than those from other tools. The superior performance of DLAD4U was further confirmed using 100 drugs as queries, with an MAP of 0.90. Conclusions DLAD4U is a new, intuitive disease search engine that takes advantage of existing resources at NCBI to provide computational efficiency and uses statistical analyses to ensure accuracy. DLAD4U is publicly available at http://dlad4u.zhang-lab.org. Electronic supplementary material The online version of this article (10.1186/s12859-018-2463-0) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Junhui Shen
- Information Center, Beijing University of Chinese Medicine, Beijing, China
| | - Suhas Vasaikar
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, USA.,Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM600, Houston, TX, 77030, USA
| | - Bing Zhang
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, USA. .,Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM600, Houston, TX, 77030, USA.
| |
Collapse
|
19
|
Fleitas C, Piñol-Ripoll G, Marfull P, Rocandio D, Ferrer I, Rampon C, Egea J, Espinet C. proBDNF is modified by advanced glycation end products in Alzheimer's disease and causes neuronal apoptosis by inducing p75 neurotrophin receptor processing. Mol Brain 2018; 11:68. [PMID: 30428894 PMCID: PMC6237019 DOI: 10.1186/s13041-018-0411-6] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/25/2018] [Indexed: 12/13/2022] Open
Abstract
Alzheimer disease (AD) is a complex pathology related to multiple causes including oxidative stress. Brain-derived neurotrophic factor (BDNF) is a neutrotrophic factor essential for the survival and differentiation of neurons and is considered a key target in the pathophysiology of various neurodegenerative diseases, as for example AD. Contrarily to BDNF, the precursor form of BDNF (proBDNF) induces apoptosis through the specific interaction with p75 and its co-receptor, Sortilin. We used hippocampal tissue and cerebrospinal fluid from AD patients and controls. to study the localization and the levels of proBDNF, p75 and Sortilin as well as the post-traduccional modifications of proBDNF induced by Radical Oxygen Species, by immunofluorescence and Western blot. Differentiation and survival were assessed on differentiated mouse hippocampal neurons derived from postnatal neural stem cells from WT animals or from the transgenic AD animal model APP/PS1∆E9, based on mutations of familiar AD. In AD patients we observe a significative increase of proBDNF and Sortilin expression and a significative increase of the ratio proBDNF/BDNF in their cerebrospinal fluid compared to controls. In addition, the proBDNF of AD patients is modified by ROS-derived advanced glycation end products, which prevent the processing of the proBDNF to the mature BDNF, leading to an increase of pathogenicity and a decrease of trophic effects. The cerebrospinal fluid from AD patients, but not from controls, induces apoptosis in differentiated hippocampal neurons mainly by the action of AGE-modified proBDNF present in the cerebrospinal fluid of the patients. This effect is triggered by the activation and processing of p75 that stimulate the internalization of the intracellular domain (ICD) within the nucleus causing apoptosis. Induction of apoptosis and p75 ICD internalization by AD patients-derived proBDNF is further enhanced in neuron cultures from the AD model expressing the APP/PS1∆E9 transgene. Our results indicate the importance of proBDNF neurotoxic signaling in AD pathology essentially by three mechanisms: i) by an increase of proBDNF stability due to ROS-induced post-traductional modifications; ii) by the increase of expression of the p75 co-receptor, Sortilin and iii) by the increase of the basal levels of p75 processing found in AD.
Collapse
Affiliation(s)
- Catherine Fleitas
- Molecular Developmental Neurobiology Group, IRBLleida-UDL Rovira Roure 82, 25198, Lleida, Spain
| | - Gerard Piñol-Ripoll
- Unitat Trastorns Cognitius, IRBLleida-Hospital Universitari Santa Maria Lleida, Lleida, Spain
| | - Pau Marfull
- Molecular Developmental Neurobiology Group, IRBLleida-UDL Rovira Roure 82, 25198, Lleida, Spain
| | - Daniel Rocandio
- Molecular Developmental Neurobiology Group, IRBLleida-UDL Rovira Roure 82, 25198, Lleida, Spain
| | - Isidro Ferrer
- Departament de Patologia i Terapèutica Experimental, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Hospitalet de Llobregat, Barcelona, Spain
| | - Claire Rampon
- Centre de Recherches sur la Cognition Animale (CRCA), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31062, Toulouse, France
| | - Joaquim Egea
- Molecular Developmental Neurobiology Group, IRBLleida-UDL Rovira Roure 82, 25198, Lleida, Spain.,Serra Húnter fellow, Associate Professor, Generalitat de Catalunya, Barcelona, Spain
| | - Carme Espinet
- Serra Húnter fellow, Associate Professor, Generalitat de Catalunya, Barcelona, Spain.
| |
Collapse
|
20
|
Zengin G, Uysal A, Diuzheva A, Gunes E, Jekő J, Cziáky Z, Picot-Allain CMN, Mahomoodally MF. Characterization of phytochemical components of Ferula halophila extracts using HPLC-MS/MS and their pharmacological potentials: a multi-functional insight. J Pharm Biomed Anal 2018; 160:374-382. [PMID: 30121555 DOI: 10.1016/j.jpba.2018.08.020] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/29/2018] [Accepted: 08/08/2018] [Indexed: 12/12/2022]
Abstract
The inhibitory action of F. halophila extracts (acetone, chloroform, and methanol) against key enzymes linked to diabetes (α-amylase, α-glucosidase), cognitive functions (acetyl cholinesterase (AChE), butyryl cholinesterase (BChE)), and hyperpigmentation (tyrosinase) was assessed. The mutagenic/antimutagenic activities were assessed and the phytochemical profile established by HPLC-MS/MS. The acetone extract showed the highest phenolic (55.22 mg GAE/g extract) and flavonoid (34.52 mg RE/g extract) contents. The chloroform extract was a potent inhibitor of cholinesterases (4.86 and 6.13 mg GALAE/g extract, against AChE and BChE, respectively). Cinnamic acid derivatives (methyl cinnamate, ferulic acid, methoxycinnamic acid isomer) were identified in the chloroform extract. Methanol extract showed potent inhibitory action against tyrosinase (137.63 mg KAE/g extract) and glucosidase (43.02 mmol ACAE/g extract). The chloroform extract (32.07 mg EDTAE/g extract) showed potent metal chelating potential. The neuroprotective action of the chloroform extract might be attributed to the metal chelating action coupled by the cholinesterase inhibitory potential. F. halophila showed no mutagenic capacity. When combined with 2-aminoflouren and 2-aminoanthracene, the acetone and chloroform extracts revealed excellent antimutagenicity in the presence of metabolic activation enzymes for Salmonella typhimurium TA98 and TA100 strains. The observed inhibitory effects of F. halophila against the studied enzyme suggest that this plant could be a promising source of bioactive phytochemicals for the management of clinical conditions.
Collapse
Affiliation(s)
- Gokhan Zengin
- Department of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey.
| | - Ahmet Uysal
- Department of Medicinal Laboratory, Vocational School of Health Services, Selcuk University, Konya, Turkey
| | - Alina Diuzheva
- Department of Analytical Chemistry, Pavol Jozef Šafárik University in Košice, Košice, Slovakia
| | - Erdogan Gunes
- Department of Biology, Science Faculty, Selcuk University, Campus, Konya, Turkey
| | - József Jekő
- Department of Chemistry, University of Nyíregyháza, Nyíregyháza, Hungary; Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza, Hungary
| | - Zoltán Cziáky
- Department of Chemistry, University of Nyíregyháza, Nyíregyháza, Hungary
| | | | | |
Collapse
|
21
|
Tsai SJ. Critical Issues in BDNF Val66Met Genetic Studies of Neuropsychiatric Disorders. Front Mol Neurosci 2018; 11:156. [PMID: 29867348 PMCID: PMC5962780 DOI: 10.3389/fnmol.2018.00156] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 04/24/2018] [Indexed: 12/20/2022] Open
Abstract
Neurotrophins have been implicated in the pathophysiology of many neuropsychiatric diseases. Brain-derived neurotrophic factor (BDNF) is the most abundant and widely distributed neurotrophin in the brain. Its Val66Met polymorphism (refSNP Cluster Report: rs6265) is a common and functional single-nucleotide polymorphism (SNP) affecting the activity-dependent release of BDNF. BDNF Val66Met transgenic mice have been generated, which may provide further insight into the functional impact of this polymorphism in the brain. Considering the important role of BDNF in brain function, more than 1,100 genetic studies have investigated this polymorphism in the past 15 years. Although these studies have reported some encouraging positive findings initially, most of the findings cannot be replicated in following studies. These inconsistencies in BDNF Val66Met genetic studies may be attributed to many factors such as age, sex, environmental factors, ethnicity, genetic model used for analysis, and gene–gene interaction, which are discussed in this review. We also discuss the results of recent studies that have reported the novel functions of this polymorphism. Because many BDNF polymorphisms and non-genetic factors have been implicated in the complex traits of neuropsychiatric diseases, the conventional genetic association-based method is limited to address these complex interactions. Future studies should apply data mining and machine learning techniques to determine the genetic role of BDNF in neuropsychiatric diseases.
Collapse
Affiliation(s)
- Shih-Jen Tsai
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| |
Collapse
|
22
|
Guo JC, Yang YJ, Guo M, Wang XD, Juan Y, Gao YS, Fu LQ, Jiang XL, Fu LM, Huang T. Correlations of Four Genetic Single Nucleotide Polymorphisms in Brain-Derived Neurotrophic Factor with Posttraumatic Stress Disorder. Psychiatry Investig 2018; 15:407-412. [PMID: 29551049 PMCID: PMC5912493 DOI: 10.30773/pi.2017.06.17.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 06/10/2017] [Accepted: 06/17/2017] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To investigate the correlations of four genetic single nucleotide polymorphisms (SNPs) of brain-derived neurotrophic factor (BDNF) with posttraumatic stress disorder (PTSD). METHODS A total of 300 patients with sporadic PTSD and 150 healthy subjects (the control group) were selected according to the diagnostic criteria of PTSD (DSM-IV), and the genotypes of the BDNF SNPs G-712A, C270T, rs6265, and rs7103411 were detected by polymerase chain reaction and direct DNA sequencing to determine intergroup differences in the genotypes and allele frequencies; the p values were corrected with the permutation test. RESULTS The genotypes and allele frequencies of the SNPs G-712A, rs6265, and rs7103411 of BDNF showed no significant intergroup differences (p>0.05). However, the genotype and allele frequencies of C270T showed significant differences between the PTSD group and the control group (p<0.05). CONCLUSION The SNP C270T of BDNF may be associated with PTSD. Individuals carrying the polymorphic T allele of C270T may be more likely to suffer from PTSD.
Collapse
Affiliation(s)
- Jun-Cheng Guo
- Department of Science and Education, Hainan General Hospital, Hainan, China.,Department of Science and Education, Affiliated Hainan Hospital of Nanhua University, Hainan, China
| | - Yi-Jun Yang
- Hainan Province, Haikou People's Hospital, Hospital Dean's Office, Hainan, China
| | - Min Guo
- The Psychological Research Center of Hainan General Hospital, Hainan, China
| | - Xiao-Dan Wang
- School of Public Health, Hainan Medical College, Hainan, China
| | - Yang Juan
- School of Public Health, Hainan Medical College, Hainan, China
| | - Yun-Suo Gao
- Department of Equipment, Hainan General Hospital, Hainan, China
| | - Lin-Qiu Fu
- Department of Psychology, Hainan General Hospital, Hainan, China
| | - Xiang-Ling Jiang
- Department of Clinical Laboratory, Hainan General Hospital, Hainan, China
| | - Lin-Mei Fu
- Medical Center, Hainan General Hospital, Hainan, China
| | - Tao Huang
- Department of Clinical Laboratory, Hainan General Hospital, Hainan, China
| |
Collapse
|
23
|
Yee JY, Lee TS, Lee J. Levels of Serum Brain-Derived Neurotropic Factor in Individuals at Ultra-High Risk for Psychosis-Findings from the Longitudinal Youth at Risk Study (LYRIKS). Int J Neuropsychopharmacol 2018; 21:734-739. [PMID: 29584866 PMCID: PMC6070044 DOI: 10.1093/ijnp/pyy036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/11/2018] [Accepted: 03/23/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Identifying biomarkers to enrich prognostication and risk predictions in individuals at high risk of developing psychosis will enable stratified early intervention efforts. Brain-derived neurotrophic factor has been widely studied in schizophrenia and in first-episode psychosis with promising results. The aim of this study was to examine the levels of serum brain-derived neurotrophic factor between healthy controls and individuals with ultra-high risk of psychosis. METHODS A sample of 106 healthy controls and 105 ultra-high risk of psychosis individuals from the Longitudinal Youth at Risk Study was included in this study. Ultra-high risk of psychosis status was determined using the Comprehensive Assessment of At-Risk Mental State at recruitment. Calgary Depression Scale for Schizophrenia was used to assess the severity of depression. All participants were followed up for 2 years, and ultra-high risk of psychosis remitters were defined by ultra-high risk of psychosis individuals who no longer fulfilled Comprehensive Assessment of At-Risk Mental State criteria at the end of the study period. Levels of brain-derived neurotrophic factor were measured in the serum by enzyme-linked immunosorbent assay method. RESULTS The ultra-high risk of psychosis group had significantly higher baseline levels of serum brain-derived neurotrophic factor compared with the control group (3.7 vs 3.3 ng/mL, P=.018). However, baseline levels of serum brain-derived neurotrophic factor did not predict the development of psychosis (OR=0.64, CI=0.40-1.02) or remission (OR=0.83, CI=0.60-1.15) from ultra-high risk of psychosis status. CONCLUSION Findings from our study did not support a role for serum brain-derived neurotrophic factor in predicting outcomes in ultra-high risk of psychosis individuals. However, the finding of higher levels of serum brain-derived neurotrophic factor in ultra-high risk of psychosis individuals deserves further study.
Collapse
Affiliation(s)
- Jie Yin Yee
- Research Division, Institute of Mental Health, Singapore,Correspondence: Jie Yin Yee, MSc, Institute of Mental Health 10 Buangkok View, Singapore 539747 ()
| | - Tih-Shih Lee
- Neuroscience & Behavioural Disorders, Duke-NUS Medical School, Singapore
| | - Jimmy Lee
- Research Division, Institute of Mental Health, Singapore,North Region & Department of Psychosis, Institute of Mental Health, Singapore,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| |
Collapse
|
24
|
Lin PH, Tsai SJ, Huang CW, Mu-En L, Hsu SW, Lee CC, Chen NC, Chang YT, Lan MY, Chang CC. Dose-dependent genotype effects of BDNF Val66Met polymorphism on default mode network in early stage Alzheimer's disease. Oncotarget 2018; 7:54200-54214. [PMID: 27494844 PMCID: PMC5342335 DOI: 10.18632/oncotarget.11027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 07/22/2016] [Indexed: 01/09/2023] Open
Abstract
In humans, brain-derived neurotrophic factor (BDNF) has been shown to play a pivotal role in neurocognition, and its gene contains a functional polymorphism (Val66Met) that may explain individual differences in brain volume and memory-related activity.In this study, we enrolled 186 Alzheimer's disease (AD) patients who underwent 3D T1 magnetic resonance imaging, and explored the gray matter (GM) structural covariance networks (SCN). The patients were divided into three groups according to their genotype: Met/Met (n = 45), Val/Met (n = 86) and Val/Val (n = 55). Seed-based analysis was performed focusing on four SCN networks. Neurobehavioral scores served as the major outcome factor.Only peak cluster volumes of default mode medial temporal lobe network showed significant genotype interactions, of which the interconnected peak clusters showed dose-dependent genotype effects. There were also significant correlations between the cognitive test scores and interconnected-cluster volumes, especially in the orbitofrontal cortex.These findings support the hypothesis that BDNF rs6265 polymorphisms modulate entorhinal cortex-interconnected clusters and the valine allele was associated with stronger structural covariance patterns that determined the cognitive outcomes.
Collapse
Affiliation(s)
- Pin-Hsuan Lin
- Department of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan
| | - Shih-Jen Tsai
- Psychiatric Department of Taipei Veterans General Hospital, Taipei, Taiwan.,Psychiatric Division, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chi-Wei Huang
- Department of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.,Department of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Liu Mu-En
- Psychiatric Division, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Shih-Wei Hsu
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chen-Chang Lee
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Nai-Ching Chen
- Department of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.,Department of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ya-Ting Chang
- Department of Health and Beauty, Shu-Zen College of Medicine and Management, Kaohsiung, Taiwan.,Department of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Min-Yu Lan
- Department of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chiung-Chih Chang
- Department of Neurology, Cognition and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| |
Collapse
|
25
|
The diabetic brain and cognition. J Neural Transm (Vienna) 2017; 124:1431-1454. [PMID: 28766040 DOI: 10.1007/s00702-017-1763-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 07/13/2017] [Indexed: 12/20/2022]
Abstract
The prevalence of both Alzheimer's disease (AD) and vascular dementia (VaD) is increasing with the aging of the population. Studies from the last several years have shown that people with diabetes have an increased risk for dementia and cognitive impairment. Therefore, the authors of this consensus review tried to elaborate on the role of diabetes, especially diabetes type 2 (T2DM) in both AD and VaD. Based on the clinical and experimental work of scientists from 18 countries participating in the International Congress on Vascular Disorders and on literature search using PUBMED, it can be concluded that T2DM is a risk factor for both, AD and VaD, based on a pathology of glucose utilization. This pathology is the consequence of a disturbance of insulin-related mechanisms leading to brain insulin resistance. Although the underlying pathological mechanisms for AD and VaD are different in many aspects, the contribution of T2DM and insulin resistant brain state (IRBS) to cerebrovascular disturbances in both disorders cannot be neglected. Therefore, early diagnosis of metabolic parameters including those relevant for T2DM is required. Moreover, it is possible that therapeutic options utilized today for diabetes treatment may also have an effect on the risk for dementia. T2DM/IRBS contribute to pathological processes in AD and VaD.
Collapse
|
26
|
Qin XY, Cao C, Cawley NX, Liu TT, Yuan J, Loh YP, Cheng Y. Decreased peripheral brain-derived neurotrophic factor levels in Alzheimer's disease: a meta-analysis study (N=7277). Mol Psychiatry 2017; 22:312-320. [PMID: 27113997 DOI: 10.1038/mp.2016.62] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/10/2016] [Accepted: 03/07/2016] [Indexed: 12/30/2022]
Abstract
Studies suggest that dysfunction of brain-derived neurotrophic factor (BDNF) is a possible contributor to the pathology and symptoms of Alzheimer's disease (AD). Several studies report reduced peripheral blood levels of BDNF in AD, but findings are inconsistent. This study sought to quantitatively summarize the clinical BDNF data in patients with AD and mild cognitive impairment (MCI, a prodromal stage of AD) with a meta-analytical technique. A systematic search of Pubmed, PsycINFO and the Cochrane Library identified 29 articles for inclusion in the meta-analysis. Random-effects meta-analysis showed that patients with AD had significantly decreased baseline peripheral blood levels of BDNF compared with healthy control (HC) subjects (24 studies, Hedges' g=-0.339, 95% confidence interval (CI)=-0.572 to -0.106, P=0.004). MCI subjects showed a trend for decreased BDNF levels compared with HC subjects (14 studies, Hedges' g=-0.201, 95% CI=-0.413 to 0.010, P=0.062). No differences were found between AD and MCI subjects in BDNF levels (11 studies, Hedges' g=0.058, 95% CI=-0.120 to 0.236, P=0.522). Interestingly, the effective sizes and statistical significance improved after excluding studies with reported medication in patients (between AD and HC: 18 studies, Hedges' g=-0.492, P<0.001; between MCI and HC: 11 studies, Hedges' g=-0.339, P=0.003). These results strengthen the clinical evidence that AD or MCI is accompanied by reduced peripheral blood BDNF levels, supporting an association between the decreasing levels of BDNF and the progression of AD.
Collapse
Affiliation(s)
- X-Y Qin
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - C Cao
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - N X Cawley
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - T-T Liu
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - J Yuan
- Section on Translational Neuroscience, College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Y P Loh
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Y Cheng
- Section on Cellular Neurobiology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
27
|
Pramanik S, Sulistio YA, Heese K. Neurotrophin Signaling and Stem Cells-Implications for Neurodegenerative Diseases and Stem Cell Therapy. Mol Neurobiol 2016; 54:7401-7459. [PMID: 27815842 DOI: 10.1007/s12035-016-0214-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 10/11/2016] [Indexed: 02/07/2023]
Abstract
Neurotrophins (NTs) are members of a neuronal growth factor protein family whose action is mediated by the tropomyosin receptor kinase (TRK) receptor family receptors and the p75 NT receptor (p75NTR), a member of the tumor necrosis factor (TNF) receptor family. Although NTs were first discovered in neurons, recent studies have suggested that NTs and their receptors are expressed in various types of stem cells mediating pivotal signaling events in stem cell biology. The concept of stem cell therapy has already attracted much attention as a potential strategy for the treatment of neurodegenerative diseases (NDs). Strikingly, NTs, proNTs, and their receptors are gaining interest as key regulators of stem cells differentiation, survival, self-renewal, plasticity, and migration. In this review, we elaborate the recent progress in understanding of NTs and their action on various stem cells. First, we provide current knowledge of NTs, proNTs, and their receptor isoforms and signaling pathways. Subsequently, we describe recent advances in the understanding of NT activities in various stem cells and their role in NDs, particularly Alzheimer's disease (AD) and Parkinson's disease (PD). Finally, we compile the implications of NTs and stem cells from a clinical perspective and discuss the challenges with regard to transplantation therapy for treatment of AD and PD.
Collapse
Affiliation(s)
- Subrata Pramanik
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791, Republic of Korea
| | - Yanuar Alan Sulistio
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791, Republic of Korea
| | - Klaus Heese
- Graduate School of Biomedical Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791, Republic of Korea.
| |
Collapse
|
28
|
Rosa E, Mahendram S, Ke YD, Ittner LM, Ginsberg SD, Fahnestock M. Tau downregulates BDNF expression in animal and cellular models of Alzheimer's disease. Neurobiol Aging 2016; 48:135-142. [PMID: 27676333 DOI: 10.1016/j.neurobiolaging.2016.08.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 08/03/2016] [Accepted: 08/24/2016] [Indexed: 12/14/2022]
Abstract
In Alzheimer's disease, soluble tau accumulates and deposits as neurofibrillary tangles (NFTs). However, a precise toxic mechanism of tau is not well understood. We hypothesized that overexpression of wild-type tau downregulates brain-derived neurotrophic factor (BDNF), a neurotrophic peptide essential for learning and memory. Two transgenic mouse models of human tau expression and human tau (hTau40)-transfected human neuroblastoma (SH-SY5Y) cells were used to examine the effect of excess or pathologically modified wild-type human tau on BDNF expression. Both transgenic mouse models, with or without NFTs, as well as hTau40-SH-SY5Y cells significantly downregulated BDNF messenger RNA compared with controls. Similarly, transgenic mice overexpressing amyloid-β (Aβ) significantly downregulated BDNF expression. However, when crossed with tau knockout mice, the resulting animals exhibited BDNF levels that were not statistically different from wild-type mice. These results demonstrate that excess or pathologically modified wild-type human tau downregulates BDNF and that neither a mutation in tau nor the presence of NFTs is required for toxicity. Moreover, our findings suggest that tau at least partially mediates Aβ-induced BDNF downregulation. Therefore, Alzheimer's disease treatments targeting Aβ alone may not be effective without considering the impact of tau pathology on neurotrophic pathways.
Collapse
Affiliation(s)
- Elyse Rosa
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Sujeivan Mahendram
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Yazi D Ke
- Dementia Research Unit, The University of New South Wales, Sydney, Australia
| | - Lars M Ittner
- Dementia Research Unit, The University of New South Wales, Sydney, Australia
| | - Stephen D Ginsberg
- Center for Dementia Research, Nathan Kline Institute, Orangeburg, NY, USA; Department of Psychiatry, New York University Langone Medical Center, Orangeburg, NY, USA; Department of Neuroscience and Physiology, New York University Langone Medical Center, Orangeburg, NY, USA
| | - Margaret Fahnestock
- Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada.
| |
Collapse
|