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Tsai SE, Yang SF, Wang YH, Yeh CB. Association between gabapentin use and risk of dementia in adults with chronic pain: A nested case-control study. J Affect Disord 2024; 358:205-210. [PMID: 38729220 DOI: 10.1016/j.jad.2024.05.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
STUDY OBJECTIVE To explore the association between gabapentin use and the risk of dementia in patients with chronic pain, considering the rising concerns of dementia in an aging population and the potential cognitive impacts of chronic pain management. DESIGN A nested case-control study utilizing data from a longitudinal health insurance database. SETTING The study is based on a longitudinal health insurance database spanning 2000-2019 in Taiwan. PATIENTS A total of 201,492 patients aged 50 years and older diagnosed with chronic pain between 2001 and 2017 were included. The study focused on individuals with chronic pain, excluding those diagnosed with dementia a year before or after their chronic pain diagnosis. INTERVENTION Analysis of gabapentin prescription history was conducted, considering the cumulative dose from the chronic pain diagnosis date to the dementia diagnosis date or equivalent period for controls. MEASUREMENT Data included demographics, gabapentin prescription history, and comorbidities. Logistic regression was used to estimate odds ratios for dementia risk. MAIN RESULTS No significant difference in the risk of dementia was found between low and high cumulative doses of gabapentin. The adjusted odds ratio for dementia risk associated with gabapentin use was 0.91 (95 % C.I. 0.83-1.01), indicating no substantial increase in risk. CONCLUSION Long-term Gabapentin therapy for chronic pain is not associated with a differential risk of dementia across dosage levels, irrespective of age or gender. Further study into its potential cognitive impacts is essential.
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Affiliation(s)
- Sheng-En Tsai
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Anesthesiology, Changhua Christian Hospital, Changhua, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yu-Hsun Wang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chao-Bin Yeh
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Emergency Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Emergency Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.
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Lin P, Kamdar N, Rodriguez GM, Cigolle C, Tate D, Mahmoudi E. Incident traumatic spinal cord injury and risk of Alzheimer's disease and related dementia: longitudinal case and control cohort study. Spinal Cord 2024:10.1038/s41393-024-01009-1. [PMID: 38937544 DOI: 10.1038/s41393-024-01009-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 06/04/2024] [Accepted: 06/11/2024] [Indexed: 06/29/2024]
Abstract
STUDY DESIGN Retrospective case/control longitudinal cohort study OBJECTIVES: Prevalent traumatic spinal cord injury (TSCI) is associated with Alzheimer's disease and related dementia (ADRD). We examined the hazard ratio for ADRD after incident TSCI and hypothesized that ADRD hazard is greater among adults with incident TSCI compared with their matched control of adults without TSCI. SETTING Using 2010-2020 U.S. national private administrative claims data, we identified adults aged 45 years and older with probable (likely and highly likely) incident TSCI (n = 657). Our controls included one-to-ten matched cohort of people without TSCI (n = 6553). METHODS We applied Cox survival models and adjusted them for age, sex, years of living with certain chronic conditions, exposure to six classes of prescribed medications, and neighborhood characteristics of place of residence. Hazard ratios were used to compare the results within a 4-year follow-up. RESULTS Our fully adjusted model without any interaction showed that incident TSCI increased the risk for ADRD (HR = 1.30; 95% CI, 1.01-1.67). People aged 45-64 with incident TSCI were at high risk for ADRD (HR = 5.14; 95% CI, 2.27-11.67) and no significant risk after age 65 (HR = 1.20; 95% CI, .92-1.55). Our sensitivity analyses confirmed a higher hazard ratio for ADRD after incident TSCI at 45-64 years of age compared with the matched controls. CONCLUSIONS TSCI is associated with a higher hazard of ADRD. This study informs the need to update clinical guidelines for cognitive screening after TSCI to address the heightened risk of cognitive decline and to shed light on the causality between TSCI and ADRD.
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Affiliation(s)
- Paul Lin
- Department of Family Medicine, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
- Institute for Healthcare Policy and Innovation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Neil Kamdar
- Institute for Healthcare Policy and Innovation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Gianna M Rodriguez
- Department of Physical Medicine and Rehabilitation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Christine Cigolle
- Institute for Healthcare Policy and Innovation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Denise Tate
- Department of Physical Medicine and Rehabilitation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Elham Mahmoudi
- Department of Family Medicine, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA.
- Institute for Healthcare Policy and Innovation, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA.
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Nain A, Chakraborty S, Barman SR, Gavit P, Indrakumar S, Agrawal A, Lin ZH, Chatterjee K. Progress in the development of piezoelectric biomaterials for tissue remodeling. Biomaterials 2024; 307:122528. [PMID: 38522326 DOI: 10.1016/j.biomaterials.2024.122528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/15/2024] [Accepted: 03/08/2024] [Indexed: 03/26/2024]
Abstract
Piezoelectric biomaterials have demonstrated significant potential in the past few decades to heal damaged tissue and restore cellular functionalities. Herein, we discuss the role of bioelectricity in tissue remodeling and explore ways to mimic such tissue-like properties in synthetic biomaterials. In the past decade, biomedical engineers have adopted emerging functional biomaterials-based tissue engineering approaches using innovative bioelectronic stimulation protocols based on dynamic stimuli to direct cellular activation, proliferation, and differentiation on engineered biomaterial constructs. The primary focus of this review is to discuss the concepts of piezoelectric energy harvesting, piezoelectric materials, and their application in soft (skin and neural) and hard (dental and bone) tissue regeneration. While discussing the prospective applications as an engineered tissue, an important distinction has been made between piezoceramics, piezopolymers, and their composites. The superiority of piezopolymers over piezoceramics to circumvent issues such as stiffness mismatch, biocompatibility, and biodegradability are highlighted. We aim to provide a comprehensive review of the field and identify opportunities for the future to develop clinically relevant and state-of-the-art biomaterials for personalized and remote health care.
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Affiliation(s)
- Amit Nain
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
| | - Srishti Chakraborty
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Snigdha Roy Barman
- Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Pratik Gavit
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; School of Bio Science and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | - Sushma Indrakumar
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Akhilesh Agrawal
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Zong-Hong Lin
- Department of Biomedical Engineering, National Taiwan University, Taipe, 10617, Taiwan.
| | - Kaushik Chatterjee
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
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Wang W, Zheng WQ, Du X, Chen SC, Chen YH, Ma QY, Wang H, Gao S, Tan R, Zhang HT, Zhou YM, Zhang FF. Chronic pain exacerbates memory impairment and pathology of Aβ and tau by upregulating IL-1β and p-65 signaling in a mouse model of Alzheimer's disease. Brain Res 2024; 1832:148843. [PMID: 38430996 DOI: 10.1016/j.brainres.2024.148843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/15/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Chronic pain is linked to cognitive impairment; however, the underlying mechanisms remain unclear. In the present study, we examined these mechanisms in a well-established mouse model of Alzheimer's disease (AD). METHODS Neuropathic pain was modeled in 5-month-old transgenic APPswe/PS1dE9 (APP/PS1) mice by partial ligation of the sciatic nerve on the left side, and chronic inflammatory pain was modeled in another group of APP/PS1 mice by injecting them with complete Freund's adjuvant on the plantar surface of the left hind paw. Six weeks after molding, the animals were tested to assess pain threshold (von Frey filament), learning, memory (novel object recognition, Morris water maze, Y-maze, and passive avoidance), and depression-like symptoms (sucrose preference, tail suspension, and forced swimming). After behavioral testing, mice were sacrificed and the levels of p65, amyloid-β (residues 1-42) and phospho-tau in the hippocampus and cerebral cortex were assayed using western blotting, while interleukin (IL)-1β levels were measured by enzyme-linked immunosorbent assay. RESULTS Animals subjected to either type of chronic pain showed lower pain thresholds, more severe deficits in learning and memory, and stronger depression-like symptoms than the corresponding control animals. Either type of chronic pain was associated with upregulation of p65, amyloid-β (1-42), and IL-1β in the hippocampus and cerebral cortex, as well as higher levels of phosphorylated tau. CONCLUSIONS Chronic pain may exacerbate cognitive deficits and depression-like symptoms in APP/PS1 mice by worsening pathology related to amyloid-β and tau and by upregulating signaling involving IL-1β and p65.
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Affiliation(s)
- Wei Wang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Wen-Qing Zheng
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China; Department of Pharmacy, the Second Affiliated Hospital of Shandong First Medical University, Tai'an, China
| | - Xian Du
- Tai'an Municipal Hospital, Tai'an, China
| | - Shi-Cai Chen
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yan-Han Chen
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Qing-Yang Ma
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Hao Wang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Shan Gao
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Rui Tan
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Han-Ting Zhang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yan-Meng Zhou
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China.
| | - Fang-Fang Zhang
- Institute of Pharmacology, Pharmacy College, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China.
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Klejc K, Cruz-Almeida Y, Sheffler JL. Addressing Pain Using a Mediterranean Ketogenic Nutrition Program in Older Adults with Mild Cognitive Impairment. J Pain Res 2024; 17:1867-1880. [PMID: 38803693 PMCID: PMC11129704 DOI: 10.2147/jpr.s451236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 04/25/2024] [Indexed: 05/29/2024] Open
Abstract
Chronic pain has negative physical and cognitive consequences in older adults and may lead to a poorer quality of life. Mediterranean ketogenic nutrition (MKN) is a promising nonpharmacological intervention for pain management, but long-term adherence is challenging due to the carbohydrate restrictive diet regimen. The main objective of this study was to evaluate the effects of the pilot MKN Adherence (MKNA) Program on pain in older adults with mild cognitive impairment and to assess whether improvements in self-reported pain were associated with adherence to MKN. Older adults (N = 58) aged 60-85 with possible mild cognitive impairment were randomized to a 6-week MKNA arm or an MKN Education (MKNE) program arm. Both arms received the same nutrition education and group format; however, the MKNA arm received additional motivational interviewing and cognitive behavioral skills to enhance adherence. Changes in self-reported pain (Brief Pain Inventory, Roland Morris, Patient's Global Impression of Change) and adherence to MKN (ketone levels, self-reported adherence) were assessed at baseline, 6-weeks, and 3-months post intervention. Both arms showed clinically significant reductions in pain. Greater adherence to MKN across the 6-week intervention was associated with higher ratings of pain-related changes on the Patient's Global Impression of Change scale. Based on these findings, adherence to MKN may promote improvements in self-reported pain in older adults with mild cognitive impairment and findings support the need for future full-scale randomized clinical trials evaluating MKN programs on pain. Trial Registration: Clinicaltrials.gov ID: NCT04817176.
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Affiliation(s)
- Kamelia Klejc
- Center for Translational Behavioral Science, Florida State University College of Medicine, Tallahassee, FL, USA
| | - Yenisel Cruz-Almeida
- Center for Cognitive Aging and Memory, University of Florida, Gainesville, FL, USA
| | - Julia L Sheffler
- Center for Translational Behavioral Science, Florida State University College of Medicine, Tallahassee, FL, USA
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Wang Z, Sun Z, Zheng H. Association between chronic pain and dementia: a systematic review and meta-analysis. Eur J Ageing 2024; 21:17. [PMID: 38777965 PMCID: PMC11111427 DOI: 10.1007/s10433-024-00812-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2024] [Indexed: 05/25/2024] Open
Abstract
PURPOSE Dementia and chronic pain (CP) are prevalent among older adults. However, no study has systematically reviewed the association between dementia and CP. Therefore, we performed this study to gather evidence about the potential relationship between the two. METHODS Two authors independently searched PubMed, Embase, and Web of Science to identify all records published up to 1 September 2022 that explored the association between CP and dementia. The methodological quality of the studies was assessed using the Newcastle Ottawa Scale (NOS). A fixed or random-effects model was used to pool the risk estimates. RESULTS Among the initial 3296 articles retrieved, 19 were included in the review (1 cross-sectional, and 18 cohort). The pooled result showed the risk of dementia was 1.42 times higher in CP patients (HR = 1.42, 95% CI 1.23-1.64, P < 0.001). dementia and CP subtypes, gender, and age did not significantly affect the results. CONCLUSION Our study shows that people who suffered from CP are at an increased risk of developing dementia, regardless of gender, age, and dementia and CP subtypes.
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Affiliation(s)
- Zhenzhi Wang
- The Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, No. 1166 Liutai Avenue, Wenjiang District, Chengdu, 611100, China
| | - Zhen Sun
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Zheng
- The Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, No. 1166 Liutai Avenue, Wenjiang District, Chengdu, 611100, China.
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Iranpanah A, Fakhri S, Bahrami G, Majnooni MB, Gravandi MM, Taghavi S, Badrbani MA, Amirian R, Farzaei MH. Protective effect of a hydromethanolic extract from Fraxinus excelsior L. bark against a rat model of aluminum chloride-induced Alzheimer's disease: Relevance to its anti-inflammatory and antioxidant effects. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117708. [PMID: 38181932 DOI: 10.1016/j.jep.2024.117708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/23/2023] [Accepted: 01/02/2024] [Indexed: 01/07/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fraxinus excelsior L. (FE), commonly known as the ash, belongs to the Oleaceae family and has shown several pharmacological and biological properties, such as antioxidant, immunomodulatory, neuroprotective, and anti-inflammatory effects. It has also attracted the most attention toward neuroinflammation. Moreover, FE bark and leaves have been used to treat neurological disorders, aging, neuropathic pain, urinary complaints, and articular pain in traditional and ethnomedicine. Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder resulting from the involvement of amyloid-beta, metal-induced oxidative stress, and neuroinflammation. AIM OF THE STUDY The objective of the current study was to assess the neuroprotective effects of hydromethanolic extract from FE bark in an AlCl3-induced rat model of AD. MATERIALS AND METHODS The maceration process was utilized to prepare the hydromethanolic extract of FE bark, and characterized by LC-MS/MS. To assess the anti-AD effects of the FE extract, rats were categorized into five different groups, AlCl3; normal control; FE-treated groups at 50, 100, and 200 mg/kg. Passive avoidance learning test, Y-maze, open field, and elevated plus maze behavioral tests were evaluated on days 7 and 14 to analyze the cognitive impairments. Zymography analysis, biochemical tests, and histopathological changes were also followed in different groups. RESULTS LC-MS/MS analysis indicated the presence of coumarins, including isofraxidin7-O-diglucoside in the methanolic extract of FE as a new isofraxidin derivative in this genus. FE significantly improved memory and cognitive function, maintained weight, prevented neuronal damages, and preserved the hippocampus's histological features, as demonstrated by behavioral tests and histopathological analysis. FE increased anti-inflammatory MMP-2 activity, whereas it decreased that of inflammatory MMP-9. Moreover, FE increased plasma antioxidant capacity by enhancing CAT and GSH while decreasing nitrite levels in the serum of treated groups. In comparison between the treated groups, the rats that received high doses of the FE extract (200 mg/kg) showed the highest therapeutic effect. CONCLUSION FE rich in coumarins could be an effective anti-AD adjunct agent, passing through antioxidant and anti-inflammatory pathways. These results encourage further studies for the development of this extract as a promising agent in preventing, managing, or treating AD and related diseases.
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Affiliation(s)
- Amin Iranpanah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Gholamreza Bahrami
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Bagher Majnooni
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Sara Taghavi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Science, Kermanshah, Iran
| | - Mehdi Azadi Badrbani
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Roshanak Amirian
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Duan W, Huang J, Huang Q, Dong B. Relationship between Pain and Dementia: The Mediating Effect of Depression among Chinese Elderly. ACTAS ESPANOLAS DE PSIQUIATRIA 2024; 52:114-121. [PMID: 38622013 PMCID: PMC11015815 DOI: 10.62641/aep.v52i2.1530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
BACKGROUND Chronic pain poses a significant problem for older adults and may potentially impact cognitive function. This study aimed to examine the cross-sectional relationship between pain severity and cognitive function in elderly individuals residing in the community. Additionally, this study sought to examine the mediating effect of depression on the relationship between pain and dementia. METHODS The study sample was derived from the 2018 China Health and Aging Longitudinal Study (CHARLS), comprising cross-sectional data from 4559 community residents aged 65 years or older. The primary outcome assessed was the occurrence of dementia, while the main independent variable was pain severity (none, little, somewhat, quite a bit, very). Depression score served as the mediating factor. Chi-square and binary logistic regression analyses were performed to examine the relationship between depression and the occurrence of pain and dementia. An intermediate model was constructed by stepwise regression. RESULTS The study indicates a significant association between cognitive impairment and both chronic pain and depressive symptoms in older adults living in China. Individuals who frequently report experiencing pain exhibit a higher likelihood of developing dementia when compared to those who do not report any pain (odds ratio (OR) = 1.72, p < 0.001). Moreover, depressive symptoms significantly mediate the relationship between pain and dementia, with the mediating effect accounting for 65.25%. CONCLUSIONS Chronic pain not only directly impacts patients' cognitive function but also indirectly exacerbates cognitive impairment through depressive symptoms as a mediating variable. For elderly individuals experiencing depressive symptoms, it is important to provide appropriate psychological treatment in conjunction with pain management strategies.
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Affiliation(s)
- Wenrong Duan
- National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, 610041 Chengdu, Sichuan, China
- Department of Geriatrics, No.2 People’s Hospital, 644000 Yibin, Sichuan, China
| | - Jian Huang
- Department of Geriatrics, No.2 People’s Hospital, 644000 Yibin, Sichuan, China
| | - Qiuling Huang
- Department of Geriatrics, No.2 People’s Hospital, 644000 Yibin, Sichuan, China
| | - Birong Dong
- National Clinical Research Center of Geriatrics, West China Hospital, Sichuan University, 610041 Chengdu, Sichuan, China
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Zhang S, Chen Y, Wang Y, Wang H, Yao D, Chen G. Tau Accumulation in the Spinal Cord Contributes to Chronic Inflammatory Pain by Upregulation of IL-1β and BDNF. Neurosci Bull 2024; 40:466-482. [PMID: 38148427 PMCID: PMC11003936 DOI: 10.1007/s12264-023-01152-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/09/2023] [Indexed: 12/28/2023] Open
Abstract
Microtubule-associated protein Tau is responsible for the stabilization of neuronal microtubules under normal physiological conditions. Much attention has been focused on Tau's contribution to cognition, but little research has explored its role in emotions such as pain, anxiety, and depression. In the current study, we found a significant increase in the levels of p-Tau (Thr231), total Tau, IL-1β, and brain-derived neurotrophic factor (BDNF) on day 7 after complete Freund's adjuvant (CFA) injection; they were present in the vast majority of neurons in the spinal dorsal horn. Microinjection of Mapt-shRNA recombinant adeno-associated virus into the spinal dorsal cord alleviated CFA-induced inflammatory pain and inhibited CFA-induced IL-1β and BDNF upregulation. Importantly, Tau overexpression was sufficient to induce hyperalgesia by increasing the expression of IL-1β and BDNF. Furthermore, the activation of glycogen synthase kinase 3 beta partly contributed to Tau accumulation. These findings suggest that Tau in the dorsal horn could be a promising target for chronic inflammatory pain therapy.
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Affiliation(s)
- Shuxia Zhang
- Department of Anesthesiology, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Yeru Chen
- Department of Anesthesiology, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Yongjie Wang
- Key Laboratory of Elemene Anti-Cancer Medicine of Zhejiang Province and Holistic Integrative Pharmacy Institutes, Hangzhou Normal University, Hangzhou, 311121, China
- Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institutes, Hangzhou Normal University, Hangzhou, 311121, China
| | - Hongwei Wang
- Department of Anesthesiology, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Dandan Yao
- Department of Anesthesiology, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Gang Chen
- Department of Anesthesiology, School of Medicine, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China.
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Galik E, Resnick B, Mocci E, Renn CL, Song Y, Dorsey SG. Differential Gene Expression in Pain-Related Genes are not Affected by the Presence of Dementia. Pain Manag Nurs 2024; 25:145-151. [PMID: 38135606 PMCID: PMC11016462 DOI: 10.1016/j.pmn.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 09/24/2023] [Accepted: 11/03/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND Prior work has demonstrated differences in the transcriptome between those with and without chronic musculoskeletal pain. AIMS The aim of this study was to explore whether pain-related gene expression is similar between individuals with and without dementia. DESIGN This was a descriptive study using a one-time assessment. SETTINGS PARTICIPANTS/SUBJECTS: A total of 20 older adults living in a continuing care retirement community, 50% of whom had dementia were inlcuded in this study. All were female and the mean age of participants was 89 (SD = 6). METHODS Pain was evaluated based on the PROMIS Pain Intensity Short Form 3a. Whole blood was collected by venipuncture into Tempus vacutainer tubes (3 ml) and the RNA was extracted at the Translational Genomics Laboratory at the University of Maryland Baltimore. Analyses included a differential expression analysis, a weighted gene co-expression network analysis, and a pathway enrichment analysis. RESULTS Eighty-three genes were differentially expressed between individuals with and without pain (p <.05). After normalizing gene counts and removing the low expressed genes, 18,028 genes were left in the final analysis. There was no clustering of the samples related to study variables of pain or dementia. CONCLUSION The findings from this study provided some preliminary support that pain-related gene expression is similar between individuals with and without dementia.
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Affiliation(s)
- Elizabeth Galik
- From the University of Maryland School of Nursing, Baltimore, Maryland.
| | - Barbara Resnick
- From the University of Maryland School of Nursing, Baltimore, Maryland
| | - Evelina Mocci
- From the University of Maryland School of Nursing, Baltimore, Maryland
| | - Cynthia L Renn
- From the University of Maryland School of Nursing, Baltimore, Maryland
| | - Yang Song
- University of Maryland School of Medicine, Baltimore, Maryland
| | - Susan G Dorsey
- From the University of Maryland School of Nursing, Baltimore, Maryland
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Han S, Wang J, Zhang W, Tian X. Chronic Pain-Related Cognitive Deficits: Preclinical Insights into Molecular, Cellular, and Circuit Mechanisms. Mol Neurobiol 2024:10.1007/s12035-024-04073-z. [PMID: 38470516 DOI: 10.1007/s12035-024-04073-z] [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: 10/13/2023] [Accepted: 02/23/2024] [Indexed: 03/14/2024]
Abstract
Cognitive impairment is a common comorbidity of chronic pain, significantly disrupting patients' quality of life. Despite this comorbidity being clinically recognized, the underlying neuropathological mechanisms remain unclear. Recent preclinical studies have focused on the fundamental mechanisms underlying the coexistence of chronic pain and cognitive decline. Pain chronification is accompanied by structural and functional changes in the neural substrate of cognition. Based on the developments in electrophysiology and optogenetics/chemogenetics, we summarized the relevant neural circuits involved in pain-induced cognitive impairment, as well as changes in connectivity and function in brain regions. We then present the cellular and molecular alternations related to pain-induced cognitive impairment in preclinical studies, mainly including modifications in neuronal excitability and structure, synaptic plasticity, glial cells and cytokines, neurotransmitters and other neurochemicals, and the gut-brain axis. Finally, we also discussed the potential treatment strategies and future research directions.
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Affiliation(s)
- Siyi Han
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Avenue, Wuhan, Hubei, China
| | - Jie Wang
- Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Wen Zhang
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Avenue, Wuhan, Hubei, China.
| | - Xuebi Tian
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095 Jiefang Avenue, Wuhan, Hubei, China.
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12
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Hu YH, Seo DC, Huber L, Shih PC, Lin HC. Chronic Non-cancer Pain and Associated Risks of Incident Mild Cognitive Impairment and Alzheimer's Disease and Related Dementias in Middle-Aged and Older Adults. J Appl Gerontol 2024:7334648241237340. [PMID: 38451267 DOI: 10.1177/07334648241237340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024] Open
Abstract
The goal of this study is to investigate the association between chronic non-cancer pain (CNCP) and mild cognitive impairment (MCI)/Alzheimer's disease and related dementias (ADRDs) development among adults aged ≥50 using administrative claims data from a national commercial health insurance company during 2007-2017. To reduce selection bias, propensity-score matching was applied to select comparable CNCP and non-CNCP patients. Time-dependent Cox proportional-hazards regressions were conducted to estimate the hazard ratios (HRs) of incident MCI/ADRDs. Of 170,900 patients with/without CNCP, 0.61% developed MCI and 2.33% had been diagnosed with ADRDs during the follow-up period. Controlling for potential confounders, CNCP patients had a 123% increase in MCI risk (HR = 2.23; 95% CI = 1.92-2.58) and a 44% increase in ADRDs risk (HR = 1.44; 95% CI = 1.34-1.54) relative to non-CNCP patients. CNCP is a risk factor for MCI/ADRDs. Promoting awareness and improving early CNCP diagnosis in middle-aged and older adults should be incorporated into cognitive impairment and dementia prevention.
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Affiliation(s)
- Yi-Han Hu
- Indiana University, Bloomington, IN, USA
| | | | - Lesa Huber
- Indiana University, Bloomington, IN, USA
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Moriya M, Hu L, Sakatani K, Kitahara M. Estimation of cognitive impairment in chronic pain patients and characteristics of estimated mild cognitive impairment. Front Neurol 2024; 15:1344190. [PMID: 38523612 PMCID: PMC10958488 DOI: 10.3389/fneur.2024.1344190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 01/31/2024] [Indexed: 03/26/2024] Open
Abstract
Background Patients with chronic pain suffer from psychological effects such as anxiety due to the pain itself. Pain can not only impair activities of daily living (ADL) and quality of life (QOL), but also impair cognitive function. Therefore, in this study, we aimed to estimate the cognitive function of chronic pain patients using a deep neural network (DNN) model that has already been implemented in society. We investigated the characteristics of patients presumed to have mild cognitive impairment (MCI) and, at the same time, verified the relationship with the questionnaire commonly used in chronic pain research, which is administered by 43 university affiliated hospitals and medical institutions participating in the chronic pain research group of the Ministry of Health, Labor and Welfare in Japan (assessment batteries). Method The study included 114 outpatients from a multidisciplinary pain clinic, and we estimated their Mini-Mental State Examination (MMSE) scores based on age and basic blood test data (23 items). Furthermore, we classified the estimated MMSE scores of chronic pain patients into two groups based on a cutoff score of 27, which indicates MCI, and compared the blood data and assessment batteries. Additionally, we used a control group of 252 healthy adults aged 45 years or older who visited a dementia prevention outpatient clinic for comparison with the MMSE scores of chronic pain patients. Result The MMSE scores in chronic pain patients were below the cutoff for MCI. When classified into two groups based on the estimated MMSE score of 27 points, WBC, RBC, Hb, Hct, PLT, UA, BUN, creatinine, Triglyceride, and γ-GT were significantly higher in the blood data. In the MCI group, PDAS values were significantly lower. Furthermore, only in the non-MCI group, a significant correlation was found between the estimated MMSE value and BPI, PDAS, and Locomo. The estimated MMSE scores were significantly lower in chronic pain patients than in healthy adults (p = 0.04). Conclusion Patients with chronic pain may exhibit cognitive impairment due to systemic metabolic disturbances. This suggests that chronic pain affects activities of daily living, resulting in systemic metabolic disorders.
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Affiliation(s)
- Masamichi Moriya
- Department of Autonomic Neuroscience, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
- Department of Human and Engineered Environmental Studies Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
- Department of Anesthesiology, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Lizhen Hu
- Department of Human and Engineered Environmental Studies Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Kaoru Sakatani
- Department of Human and Engineered Environmental Studies Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Masaki Kitahara
- Department of Anesthesiology, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
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14
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Presto P, Sehar U, Kopel J, Reddy PH. Mechanisms of pain in aging and age-related conditions: Focus on caregivers. Ageing Res Rev 2024; 95:102249. [PMID: 38417712 DOI: 10.1016/j.arr.2024.102249] [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: 09/28/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/01/2024]
Abstract
Pain is a complex, subjective experience that can significantly impact quality of life, particularly in aging individuals, by adversely affecting physical and emotional well-being. Whereas acute pain usually serves a protective function, chronic pain is a persistent pathological condition that contributes to functional deficits, cognitive decline, and emotional disturbances in the elderly. Despite substantial progress that has been made in characterizing age-related changes in pain, complete mechanistic details of pain processing mechanisms in the aging patient remain unknown. Pain is particularly under-recognized and under-managed in the elderly, especially among patients with Alzheimer's disease (AD), Alzheimer's disease-related dementias (ADRD), and other age-related conditions. Furthermore, difficulties in assessing pain in patients with AD/ADRD and other age-related conditions may contribute to the familial caregiver burden. The purpose of this article is to discuss the mechanisms and risk factors for chronic pain development and persistence, with a particular focus on age-related changes. Our article also highlights the importance of caregivers working with aging chronic pain patients, and emphasizes the urgent need for increased legislative awareness and improved pain management in these populations to substantially alleviate caregiver burden.
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Affiliation(s)
- Peyton Presto
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Ujala Sehar
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Jonathan Kopel
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - P Hemachandra Reddy
- Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Nutritional Sciences Department, College of Human Sciences, Texas Tech University, Lubbock, TX 79409, USA; Department of Speech, Language and Hearing Sciences, School Health Professions, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Public Health, School of Population and Public Health, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Neurology, Departments of School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX, USA.
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15
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AlHarkan K, Sultana N, Al Mulhim N, AlAbdulKader AM, Alsafwani N, Barnawi M, Alasqah K, Bazuhair A, Alhalwah Z, Bokhamseen D, Aljameel SS, Alamri S, Alqurashi Y, Ghamdi KA. Artificial intelligence approaches for early detection of neurocognitive disorders among older adults. Front Comput Neurosci 2024; 18:1307305. [PMID: 38444404 PMCID: PMC10913197 DOI: 10.3389/fncom.2024.1307305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/29/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction Dementia is one of the major global health issues among the aging population, characterized clinically by a progressive decline in higher cognitive functions. This paper aims to apply various artificial intelligence (AI) approaches to detect patients with mild cognitive impairment (MCI) or dementia accurately. Methods Quantitative research was conducted to address the objective of this study using randomly selected 343 Saudi patients. The Chi-square test was conducted to determine the association of the patient's cognitive function with various features, including demographical and medical history. Two widely used AI algorithms, logistic regression and support vector machine (SVM), were used for detecting cognitive decline. This study also assessed patients' cognitive function based on gender and developed the predicting models for males and females separately. Results Fifty four percent of patients have normal cognitive function, 34% have MCI, and 12% have dementia. The prediction accuracies for all the developed models are greater than 71%, indicating good prediction capability. However, the developed SVM models performed the best, with an accuracy of 93.3% for all patients, 94.4% for males only, and 95.5% for females only. The top 10 significant predictors based on the developed SVM model are education, bedtime, taking pills for chronic pain, diabetes, stroke, gender, chronic pains, coronary artery diseases, and wake-up time. Conclusion The results of this study emphasize the higher accuracy and reliability of the proposed methods in cognitive decline prediction that health practitioners can use for the early detection of dementia. This research can also stipulate substantial direction and supportive intuitions for scholars to enhance their understanding of crucial research, emerging trends, and new developments in future cognitive decline studies.
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Affiliation(s)
- Khalid AlHarkan
- Department of Family and Community Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Nahid Sultana
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Noura Al Mulhim
- Department of Physiology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Assim M. AlAbdulKader
- Department of Family and Community Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Noor Alsafwani
- Department of Pathology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Marwah Barnawi
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Khulud Alasqah
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Anhar Bazuhair
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Zainab Alhalwah
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Dina Bokhamseen
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Sumayh S. Aljameel
- Department of Computer Science, College of Computer Science and Information Technology, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Sultan Alamri
- Department of Family Medicine, College of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Yousef Alqurashi
- Respiratory Care Department, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Kholoud Al Ghamdi
- Department of Physiology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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16
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Zheng YN, Liu H, Chen PJ, Wang XQ. Association of persistent musculoskeletal pain with dementia risk score in adults aged 45 years or older: The China health and retirement longitudinal study. Brain Behav Immun 2024; 116:185-192. [PMID: 38081434 DOI: 10.1016/j.bbi.2023.12.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/30/2023] [Accepted: 12/08/2023] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Recent studies have confirmed an association between pain and dementia. Whether musculoskeletal pain in the spine, upper limbs, and lower limbs is associated with dementia risk remains unclear. The longitudinal effect of musculoskeletal pain on dementia risk also remains unclear. AIMS This work aimed to investigate the association between musculoskeletal pain and dementia risk score. METHODS We conducted cross-sectional and longitudinal analyses using data from the China Health and Retirement Longitudinal Study. Participants aged 45 years or older were recruited in 2011. A total of 10,759 participants with complete pain information at baseline were eligible for the cross-sectional analysis, and 5,855 were eligible for the longitudinal analyses. We utilized the Rotterdam Study Basic Dementia Risk Model (BDRM) to assess dementia risk. Generalized estimating equations were used to investigate the associations. RESULTS Compared with participants without persistent musculoskeletal pain, those with persistent musculoskeletal pain (standardized, β = 0.83; 95 % CI: 0.06, 1.61, p = 0.036), multisite pain (sites≧5; β = 1.52; 95 % CI: 0.13, 2.91, p = 0.032), neck pain (β = 2.33; 95 % CI: 0.41, 4.25, p = 0.018), back pain (β = 2.12; 95 % CI: 0.43, 3.82, p = 0.014), waist pain (β = 1.09; 95 % CI: 0.07, 2.11, p = 0.037), shoulder pain (β = 1.74; 95 % CI: 0.46, 3.02, p = 0.008), wrist pain (β = 2.72; 95 % CI: 0.42, 5.02, p = 0.021), and knee pain (β = 1.91; 95 % CI: 0.70, 3.13, p = 0.002) had a higher BDRM score during 4 years of follow-up. CONCLUSIONS Promoting the management of musculoskeletal pain may be beneficial in reducing the dementia risk score.
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Affiliation(s)
- Ya-Nan Zheng
- Rehabilitation Treatment Center, The First Rehabilitation Hospital of Shanghai, Shanghai 200090, China; Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Hui Liu
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Pei-Jie Chen
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China.
| | - Xue-Qiang Wang
- Rehabilitation Medicine Center, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China.
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Milani SA, Sanchez C, Kuo YF, Downer B, Al Snih S, Markides KS, Raji M. Pain and incident cognitive impairment in very old Mexican American adults. J Am Geriatr Soc 2024; 72:226-235. [PMID: 37794825 PMCID: PMC10842321 DOI: 10.1111/jgs.18618] [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: 03/10/2023] [Revised: 08/21/2023] [Accepted: 09/06/2023] [Indexed: 10/06/2023]
Abstract
BACKGROUND Studies have investigated the association between pain and cognitive impairment among older adults, but the findings are mixed. We assessed the relationship of activity-limiting pain (pain interference) with incident cognitive impairment and the mediating effect of depressive symptoms among Mexican American adults aged ≥80. METHODS Data were taken from the Hispanic Established Population for the Epidemiological Study of the Elderly (2010-2016). Pain interference, or pain that limited daily activities in the last 12 months, was categorized into none, untreated pain interference, and treated pain interference. Cognitive impairment was defined as scoring <21 on the Mini-Mental State Examination and difficulty with at least one instrumental activity of daily living. We used general estimation equations to assess this relationship between pain and incident cognitive impairment over the 6-year period (n = 313). RESULTS Participants reporting both untreated and treated pain interference had higher odds of incident cognitive impairment than those reporting no pain or pain interference (untreated adjusted odds ratio [aOR]: 2.18; 95% confidence interval [CI]: 1.09-4.36; treated aOR: 1.99; 95% CI: 1.15-3.44). Depressive symptoms explained 15.0% of the total effect of untreated pain and 25.3% of treated pain. CONCLUSIONS Among very old Mexican American adults, both treated and untreated pain interference was associated with incident cognitive impairment. This association was partially mediated by depressive symptoms, underscoring a need for depression screening in patients with chronic pain. Future work is needed to examine mechanistic/causal pathways between pain and subsequent cognitive impairment and the role of pharmacological and non-pharmacological treatments in these pathways.
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Affiliation(s)
| | - Claudia Sanchez
- John Sealy School of Medicine, University of Texas Medical Branch
| | - Yong-Fang Kuo
- Department of Biostatistics & Data Science, University of Texas Medical Branch
| | - Brian Downer
- Department of Population Health & Health Disparities, University of Texas Medical Branch
| | - Soham Al Snih
- Department of Population Health & Health Disparities, University of Texas Medical Branch
| | - Kyriakos S. Markides
- Department of Population Health & Health Disparities, University of Texas Medical Branch
| | - Mukaila Raji
- Division of Geriatric and Palliative Medicine, Department of Internal Medicine, University of Texas Medical Branch
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Johnson CE, Duncan MJ, Murphy MP. Sex and Sleep Disruption as Contributing Factors in Alzheimer's Disease. J Alzheimers Dis 2024; 97:31-74. [PMID: 38007653 PMCID: PMC10842753 DOI: 10.3233/jad-230527] [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] [Indexed: 11/27/2023]
Abstract
Alzheimer's disease (AD) affects more women than men, with women throughout the menopausal transition potentially being the most under researched and at-risk group. Sleep disruptions, which are an established risk factor for AD, increase in prevalence with normal aging and are exacerbated in women during menopause. Sex differences showing more disrupted sleep patterns and increased AD pathology in women and female animal models have been established in literature, with much emphasis placed on loss of circulating gonadal hormones with age. Interestingly, increases in gonadotropins such as follicle stimulating hormone are emerging to be a major contributor to AD pathogenesis and may also play a role in sleep disruption, perhaps in combination with other lesser studied hormones. Several sleep influencing regions of the brain appear to be affected early in AD progression and some may exhibit sexual dimorphisms that may contribute to increased sleep disruptions in women with age. Additionally, some of the most common sleep disorders, as well as multiple health conditions that impair sleep quality, are more prevalent and more severe in women. These conditions are often comorbid with AD and have bi-directional relationships that contribute synergistically to cognitive decline and neuropathology. The association during aging of increased sleep disruption and sleep disorders, dramatic hormonal changes during and after menopause, and increased AD pathology may be interacting and contributing factors that lead to the increased number of women living with AD.
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Affiliation(s)
- Carrie E. Johnson
- University of Kentucky, College of Medicine, Department of Molecular and Cellular Biochemistry, Lexington, KY, USA
| | - Marilyn J. Duncan
- University of Kentucky, College of Medicine, Department of Neuroscience, Lexington, KY, USA
| | - M. Paul Murphy
- University of Kentucky, College of Medicine, Department of Molecular and Cellular Biochemistry, Lexington, KY, USA
- University of Kentucky, Sanders-Brown Center on Aging, Lexington, KY, USA
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Sabbir MG. Cholinergic Receptor Muscarinic 1 Co-Localized with Mitochondria in Cultured Dorsal Root Ganglion Neurons, and Its Deletion Disrupted Mitochondrial Ultrastructure in Peripheral Neurons: Implications in Alzheimer's Disease. J Alzheimers Dis 2024; 98:247-264. [PMID: 38427478 DOI: 10.3233/jad-230883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Background Loss of Cholinergic Receptor Muscarinic 1 (CHRM1) has been linked to the pathogenesis of Alzheimer's disease (AD). Our recent study found significantly lower CHRM1 protein levels in AD patient cortices, linked to reduced survival. Furthermore, using knockout mice (Chrm1-/-) we demonstrated that deletion of Chrm1 alters cortical mitochondrial structure and function, directly establishing a connection between its loss and mitochondrial dysfunction in the context of AD. While CHRM1's role in the brain has been extensively investigated, its impact on peripheral neurons in AD remains a crucial area of research, especially considering reported declines in peripheral nerve conduction among AD patients. Objective The objective was to characterize Chrm1 localization and mitochondrial deficits in Chrm1-/- dorsal root ganglion (DRG) neurons. Methods Recombinant proteins tagged with Green or Red Fluorescent Protein (GFP/RFP) were transiently expressed to investigate the localization of Chrm1 and mitochondria, as well as mitochondrial movement in the neurites of cultured primary mouse DRG neurons, using confocal time-lapse live cell imaging. Transmission electron microscopy was performed to examine the ultrastructure of mitochondria in both wild-type and Chrm1-/- DRGs. Results Fluorescence imaging revealed colocalization and comigration of N-terminal GFP-tagged Chrm1 and mitochondrial localization signal peptide-tagged RFP-labelled mitochondria in the DRGs neurons. A spectrum of mitochondrial structural abnormalities, including disruption and loss of cristae was observed in 87% neurons in Chrm1-/- DRGs. Conclusions This study suggests that Chrm1 may be localized in the neuronal mitochondria and loss of Chrm1 in peripheral neurons causes sever mitochondrial structural aberrations resembling AD pathology.
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Affiliation(s)
- Mohammad Golam Sabbir
- Department of Psychology and Neuroscience, Collegeof Psychology, Nova Southeastern University, Fort Lauderdale, FL, USA
- Alzo Biosciences Inc., San Diego, CA, USA
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Cheng Y, Ho E, Weintraub S, Rentz D, Gershon R, Das S, Dodge HH. Predicting Brain Amyloid Status Using the National Institute of Health Toolbox (NIHTB) for Assessment of Neurological and Behavioral Function. J Prev Alzheimers Dis 2024; 11:943-957. [PMID: 39044505 PMCID: PMC11269772 DOI: 10.14283/jpad.2024.77] [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] [Indexed: 07/25/2024]
Abstract
BACKGROUND Amyloid-beta (Aβ) plaque is a neuropathological hallmark of Alzheimer's disease (AD). As anti-amyloid monoclonal antibodies enter the market, predicting brain amyloid status is critical to determine treatment eligibility. OBJECTIVE To predict brain amyloid status utilizing machine learning approaches in the Advancing Reliable Measurement in Alzheimer's Disease and Cognitive Aging (ARMADA) study. DESIGN ARMADA is a multisite study that implemented the National Institute of Health Toolbox for Assessment of Neurological and Behavioral Function (NIHTB) in older adults with different cognitive ability levels (normal, mild cognitive impairment, early-stage dementia of the AD type). SETTING Participants across various sites were involved in the ARMADA study for validating the NIHTB. PARTICIPANTS 199 ARMADA participants had either PET or CSF information (mean age 76.3 ± 7.7, 51.3% women, 42.3% some or complete college education, 50.3% graduate education, 88.9% White, 33.2% with positive AD biomarkers). MEASUREMENTS We used cognition, emotion, motor, sensation scores from NIHTB, and demographics to predict amyloid status measured by PET or CSF. We applied LASSO and random forest models and used the area under the receiver operating curve (AUROC) to evaluate the ability to identify amyloid positivity. RESULTS The random forest model reached AUROC of 0.74 with higher specificity than sensitivity (AUROC 95% CI:0.73 - 0.76, Sensitivity 0.50, Specificity 0.88) on the held-out test set; higher than the LASSO model (0.68 (95% CI:0.68 - 0.69)). The 10 features with the highest importance from the random forest model are: picture sequence memory, cognition total composite, cognition fluid composite, list sorting working memory, words-in-noise test (hearing), pattern comparison processing speed, odor identification, 2-minutes-walk endurance, 4-meter walk gait speed, and picture vocabulary. Overall, our model revealed the validity of measurements in cognition, motor, and sensation domains, in associating with AD biomarkers. CONCLUSION Our results support the utilization of the NIH toolbox as an efficient and standardizable AD biomarker measurement that is better at identifying amyloid negative (i.e., high specificity) than positive cases (i.e., low sensitivity).
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Affiliation(s)
- You Cheng
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Emily Ho
- Northwestern University, Chicago, IL, USA
| | | | - Dorene Rentz
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Sudeshna Das
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Hiroko H. Dodge
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Chen L, Qin Q, Huang P, Cao F, Yin M, Xie Y, Wang W. Chronic pain accelerates cognitive impairment by reducing hippocampal neurogenesis may via CCL2/CCR2 signaling in APP/PS1 mice. Brain Res Bull 2023; 205:110801. [PMID: 37931808 DOI: 10.1016/j.brainresbull.2023.110801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 10/18/2023] [Accepted: 10/27/2023] [Indexed: 11/08/2023]
Abstract
Patients with chronic pain often have cognitive impairment; this is especially true in elderly patients with neurodegenerative diseases such as Alzheimer's disease (AD), but the mechanism underlying this association remains unclear. This was addressed in the present study by investigating the effect of chronic neuropathic pain on hippocampal neurogenesis and cognitive impairment using amyloid precursor protein/presenilin 1 (APP/PS1) double transgenic mice subjected to spared-nerve injury (SNI). The Von Frey test was performed to determine the mechanical threshold of mouse hind limbs after SNI. The Morris water maze test was used to evaluate spatial learning and memory. Doublecortin-positive (DCX+), 5-bromo-2'-deoxyuridine (BrdU)+, BrdU+/neuronal nuclei (NeuN)+, and C-C motif chemokine ligand 2 (CCL2)+ neurons in the dentate gyrus of the hippocampus were detected by immunohistochemistry and immunofluorescence analysis. CCL2 and C-C chemokine receptor type 2 (CCR2) protein levels in the mouse hippocampus were analyzed by western blotting. The results showed that APP/PS1 mice with chronic neuropathic pain induced by SNI had significant learning and memory impairment. This was accompanied by increased CCL2 and CCR2 expression and decreases in the number of DCX+, BrdU+, and BrdU+/NeuN+ neurons. These results suggest that chronic neuropathic pain is associated with cognitive impairment, which may be caused by CCL2/CCR2 signaling-mediated inhibition of hippocampal neurogenesis. Thus, therapeutic strategies that alleviate neuropathic pain can potentially slow cognitive decline in patients with AD and other neurodegenerative diseases.
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Affiliation(s)
- Lili Chen
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Qin Qin
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Panchuan Huang
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Fangli Cao
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Maojia Yin
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Yachen Xie
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Wuchao Wang
- Department of Pain, Daping Hospital, Army Medical University, Chongqing 400042, China.
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Djafar JV, Smith NJ, Johnson AM, Bhattacharya K, Ardern-Holmes SL, Ellaway C, Dale RC, D'Silva AM, Kariyawasam DS, Grattan S, Kandula T, Lewis K, Mohammed SS, Farrar MA. Characterizing Common Phenotypes Across the Childhood Dementia Disorders: A Cross-sectional Study From Two Australian Centers. Pediatr Neurol 2023; 149:75-83. [PMID: 37806042 DOI: 10.1016/j.pediatrneurol.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND Childhood dementias are a group of rare pediatric conditions characterized by progressive neurocognitive decline. Quantifying and characterising phenotypes to identify similarities between specific conditions is critical to inform opportunities to optimize care and advance research. METHODS This cross-sectional study recruited primary caregivers of children (<18 years) living with a dementia syndrome from neurology and metabolic clinics in Sydney and Adelaide, Australia. Sociodemographic and clinical data were collated. Behavior, eating, sleep, pain, and neurological disability were assessed using validated tools, including Strengths and Difficulties, Child Eating Behaviour, and Children's Sleep Habits questionnaires and visual analog of pain and modified Rankin scales. Data were analyzed with descriptive statistics. RESULTS Among 45 children with 23 different dementia syndromes, the modified Rankin Scale demonstrated at least moderate neurological disability and functional dependence in 82% (37/45). Families reported delays in receiving an accurate diagnosis following initial symptoms (mean: 1.6 ± 1.4 years, range: 0-5 years). The most prevalent phenotypes included communication, comprehension, or recall difficulties (87%, 39/45); disturbances in sleep (80%, 36/45); appetite changes (74%, 29/39); mobility issues (53%, 24/45); and hyperactive behavior (53%, 21/40). Behavioral problems had a "high" or "very high" impact on everyday family life in 73% (24/33). CONCLUSIONS Childhood dementia disorders share substantial behavioral, motor, sensory, and socioemotional symptoms, resulting in high care needs, despite their vast heterogeneity in age of onset and progression. Considering their unifying characteristics under one collective term is an opportunity to improve treatment, provide quality care, and accelerate research.
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Affiliation(s)
- Jason V Djafar
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia
| | - Nicholas J Smith
- Department of Neurology and Clinical Neurophysiology, Women's and Children's Health Network, Adelaide, Australia; Discipline of Paediatrics, School of Medicine, The University of Adelaide, Adelaide, Australia
| | - Alexandra M Johnson
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia; Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Kaustuv Bhattacharya
- Genetic Metabolic Disorders Service, The Children's Hospital at Westmead, Sydney, Australia
| | | | - Carolyn Ellaway
- Genetic Metabolic Disorders Service, The Children's Hospital at Westmead, Sydney, Australia
| | - Russell C Dale
- Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Arlene M D'Silva
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia
| | - Didu S Kariyawasam
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia; Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Sarah Grattan
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia
| | - Tejaswi Kandula
- Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Katherine Lewis
- Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Shekeeb S Mohammed
- Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia
| | - Michelle A Farrar
- Discipline of Paediatrics and Child Health, School of Clinical Medicine, UNSW Medicine and Health, Sydney, Australia; Department of Neurology, Sydney Children's Hospital Network, Sydney, Australia.
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Muench U, Kim KM, Zimmer Z, Monroe TB. The association between cognitive ability and opioid prescribing in vulnerable older adults with chronic pain in ambulatory care: a secondary data analysis using the Medical Expenditure Panel Survey. BMC Med 2023; 21:446. [PMID: 37974164 PMCID: PMC10655447 DOI: 10.1186/s12916-023-03133-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 10/25/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Vulnerable older adults living with Alzheimer's disease or Alzheimer's disease and related dementia (AD/ADRD) and chronic pain generally receive fewer pain medications than individuals without AD/ADRD, especially in nursing homes. Little is known about pain management in older adults with AD/ADRD in the community. The aim of the study was to examine opioid prescribing patterns in individuals with chronic pain by levels of cognitive ability in ambulatory care. METHODS We used the Medical Expenditure Panel Survey (MEPS), years 2002-2017, and identified three levels of cognitive impairment: no cognitive impairment (NCI), individuals reporting cognitive impairment (CI) without an AD/ADRD diagnosis, and individuals with a diagnosis of AD/ADRD. We examined any receipt of an opioid prescription and the number of opioid prescriptions using a logistic and negative binomial regression adjusting for sociodemographic and health characteristics and stratifying by three types of chronic pain (any chronic pain, severe chronic pain, and chronic pain identified through ICD 9/10 chronic pain diagnoses). RESULTS Among people with any chronic pain, adjusted odds of receiving an opioid for people with CI (OR 1.41, 95% confidence interval 1.31-1.52) and AD/ADRD (OR 1.23, 95% confidence interval 1.04-1.45) were higher compared to NCI. Among people with chronic pain ICD 9/10 conditions, the odds of receiving an opioid were also higher for those with CI (OR 1.43, 95% confidence interval 1.34-1.56) and AD/ADRD (OR 1.48, 95% confidence interval 1.23-1.78) compared to NCI. Among those with severe chronic pain, people with CI were more likely to receive an opioid (OR 1.17, 95% confidence interval 1.07-1.27) relative to NCI (OR 0.89, 95% confidence interval 0.75-1.06). People with AD/ADRD experiencing severe chronic pain were not more likely to receive an opioid compared to the NCI group. Adjusted predicted counts of opioid prescriptions showed more opioids in CI and AD/ADRD in all chronic pain cohorts, with the largest numbers of opioid prescriptions in the severe chronic pain and ICD 9/10 diagnoses groups. CONCLUSIONS The results suggest increased opioid use in people living with CI and AD/ADRD in the ambulatory care setting and potentially indicate that these individuals either require more analgesics or that opioids may be overprescribed. Further research is needed to examine pain management in this vulnerable population.
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Affiliation(s)
- Ulrike Muench
- Department of Social and Behavioral Sciences, School of Nursing, University of California, 490 Illinois St., Floor 12, Box 0612, San FranciscoSan Francisco, CA, 94143, USA.
- Philip R. Lee Institute for Health Policy Studies, School of Medicine, University of California, San Francisco, USA.
- Healthforce Center, University of California, San Francisco, San Francisco, USA.
| | - Kyung Mi Kim
- Department of Social and Behavioral Sciences, School of Nursing, University of California, 490 Illinois St., Floor 12, Box 0612, San FranciscoSan Francisco, CA, 94143, USA
- Office of Research Patient Care Services, Stanford Health Care, Stanford, USA
- Clinical Excellence Research Center, School of Medicine, Stanford University, Stanford, USA
| | - Zachary Zimmer
- Global Aging and Community Initiative and Department of Family Studies & Gerontology, Mount Saint Vincent University, Halifax, Canada
| | - Todd B Monroe
- Center for Healthy Aging Self-Management, and Complex Care, College of Nursing, The Ohio State University, Columbus, USA
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Cantón-Habas V, Rich-Ruiz M, Martínez-Martos JM, Ramírez-Expósito MJ, Carrera-González MP. Determination of soluble tumor necrosis factor receptor II and secretory immunoglobulin A in saliva of patients with dementia. Eur Arch Psychiatry Clin Neurosci 2023:10.1007/s00406-023-01693-9. [PMID: 37838644 DOI: 10.1007/s00406-023-01693-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/20/2023] [Indexed: 10/16/2023]
Abstract
The prevalence of pain and dementia increases with age, affecting a significant percentage of the population due to aging. Both pathologies are connected through the inflammatory process, specifically through the tumor necrosis factor. The effect of this cytokine is mediated through the modulation of its TNFRI and TNFRII receptors, which are linked to the dementia process. In addition, immunoglobulins such as secretory immunoglobulin A (sIgA) have been recognized as one of the main biomarkers of pain in saliva. sTNFRII and sIgA levels were determined in saliva samples by ELISA from healthy people and patients with dementia in GDS stages 5-7. The concentrations of these markers were also correlated with the GDS stage and sex. We observed a significant decrease (*** p ≤ 0.001) in the levels of sTNFRII (pg/mL) and a significant increase (** p ≤ 0.01) in the levels of sIgA (ng/mL) in the saliva of patients with dementia compared to the healthy control group. We did not observe a correlation with the data of the biomarkers regarding the GDS stage and sex. The results obtained for sTNFRII are consistent with those obtained by other authors on brain tissue, who conclude that unopposed neuronal TNFRI signaling, when TNFRII is selectively downregulated, leads to a more severe course of AD pathogenesis. Regarding sIgA, the elevated values of sIgA may reflect the immune status of these patients. Therefore, these biomarkers can provide us with relevant information through a non-invasive method such as saliva analysis.
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Affiliation(s)
- V Cantón-Habas
- Department of Nursing, Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of Córdoba, Maimonides Institute of Biomedical Research of Córdoba (IMIBIC) IMIBIC Building, Reina, Sofia University Hospital, Av. Menéndez Pidal, s/n, 14004, Córdoba, Spain
| | - M Rich-Ruiz
- Department of Nursing, Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of Córdoba, Maimonides Institute of Biomedical Research of Córdoba (IMIBIC) IMIBIC Building, Reina, Sofia University Hospital, Av. Menéndez Pidal, s/n, 14004, Córdoba, Spain
- Centro de Investigación Biomédica en Red Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain
| | - J M Martínez-Martos
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, Faculty of Health Sciences, University of Jaén, Campus Universitario Las Lagunillas, 23071, Jaén, Spain
| | - M J Ramírez-Expósito
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, Faculty of Health Sciences, University of Jaén, Campus Universitario Las Lagunillas, 23071, Jaén, Spain
| | - M P Carrera-González
- Department of Nursing, Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of Córdoba, Maimonides Institute of Biomedical Research of Córdoba (IMIBIC) IMIBIC Building, Reina, Sofia University Hospital, Av. Menéndez Pidal, s/n, 14004, Córdoba, Spain.
- Experimental and Clinical Physiopathology Research Group CTS-1039, Department of Health Sciences, Faculty of Health Sciences, University of Jaén, Campus Universitario Las Lagunillas, 23071, Jaén, Spain.
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Sadlon A, Takousis P, Ankli B, Alexopoulos P, Perneczky R. Association of Chronic Pain with Biomarkers of Neurodegeneration, Microglial Activation, and Inflammation in Cerebrospinal Fluid and Impaired Cognitive Function. Ann Neurol 2023; 95:10.1002/ana.26804. [PMID: 37787094 PMCID: PMC10987399 DOI: 10.1002/ana.26804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/04/2023]
Abstract
OBJECTIVE Debate surrounds the role of chronic pain as a risk factor for cognitive decline and dementia. This study aimed at examining the association of chronic pain with biomarkers of neurodegeneration using data from the Alzheimer's Disease Neuroimaging Initiative. METHODS Participants were classified using the ATN (amyloid, tau, neurodegeneration) classification. Chronic pain was defined as persistent or recurrent pain reported at baseline. For each ATN group, analysis of covariance models identified differences in cerebrospinal fluid (CSF) levels of amyloid β1-42 , phosphorylated tau 181 (ptau181 ), total tau (t-tau), soluble triggering receptor expressed on myeloid cells 2 (sTREM2), and cognitive function between chronic pain states. Differences in CSF levels of inflammatory markers between chronic pain states were further analyzed. Linear mixed effect models examined longitudinal changes. RESULTS The study included 995 individuals, with 605 (60.81%) reporting chronic pain at baseline. At baseline, individuals with suspected non-Alzheimer pathophysiology and chronic pain showed increased CSF levels of t-tau and sTREM2. Chronic pain was associated with increased tumor necrosis factor α levels, irrespective of the ATN group. Longitudinally, an increase in ptau181 CSF levels was observed in chronic pain patients with negative amyloid and neurodegeneration markers. Amyloid-positive and neurodegeneration-negative chronic pain patients showed higher memory function cross-sectionally. No significant longitudinal decline in cognitive function was observed for any ATN group. INTERPRETATION Our study suggests that chronic pain induces neuronal damage and microglial activation in particular subgroups of patients along the AD spectrum. Further studies are needed to confirm these findings. ANN NEUROL 2023.
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Affiliation(s)
- Angélique Sadlon
- Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, London, United Kingdom (UK)
- Department of Clinical Chemistry, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
- Pain Clinic Basel, Basel, Switzerland
| | - Petros Takousis
- Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, London, United Kingdom (UK)
| | - Barbara Ankli
- Pain Clinic Basel, Basel, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Panagiotis Alexopoulos
- Global Βrain Health Institute, School of Medicine, Trinity College Dublin, The University of Dublin, Dublin, Republic of Ireland
- Department of Psychiatry, Patras University General Hospital, Faculty of Medicine, School of Health Sciences, University of Patras, Patras, Greece
- Patras Dementia Day Care Centre, Patras, Greece
- Department of Psychiatry and Psychotherapy, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Robert Perneczky
- Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, London, United Kingdom (UK)
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
- German Centre for Neurodegenerative Diseases (DZNE) Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Sheffield Institute for Translational Neurosciences (SITraN), University of Sheffield, Sheffield, United Kingdom (UK)
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26
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Guo X, Hou C, Tang P, Li R. Chronic Pain, Analgesics, and Cognitive Status: A Comprehensive Mendelian Randomization Study. Anesth Analg 2023; 137:896-905. [PMID: 37171986 DOI: 10.1213/ane.0000000000006514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
BACKGROUND Observational studies have suggested an intricate relationship among chronic pain (CP), use of analgesics, and cognitive status, but it remains unclear whether these associations are of a causal nature. METHODS To investigate the causal relationship among them, summary statistics of 9 types of CP (headache, hip, neck/shoulder, stomach/abdominal, back, knee, facial, general, and multisite CP), analgesics (nonsteroidal anti-inflammatory drugs [NSAIDs], opioids, salicylic acid and derivatives, and anilides), and cognitive status (cognitive function, Alzheimer's disease [AD], vascular dementia, Lewy body dementia [LBD], and dementia) were included in this Mendelian randomization (MR) study. As both CP and analgesic use were associated with cognitive status and vice versa, we performed a bidirectional MR analysis between CP or analgesics and dementia using strong genetic instruments ( P < .001) identified from genome-wide association studies (GWAS). The inverse-variance weighted method was applied to calculate estimates. The MR estimated odds ratio (OR) was interpreted as odds of outcome per unit increase in the exposure. The Benjamini-Hochberg method was applied to adjust the P value for multiple testing, and P < .05 means statistically significant. RESULTS Multisite CP (MCP) was associated with worse cognitive function (OR [95% confidence interval], 0.69 [0.53-0.89], P = .043), but no significant reverse effect of cognitive status on CP was found. There were no significant associations observed between analgesics and cognitive status. Unexpectedly, patients with AD and LBD had significantly lower exposure to anilides (AD: OR = 0.97 [0.94-0.99], P = .034; LBD: OR = 0.97 [0.96-0.99], P = .012) and NSAIDs (AD: OR = 0.96 [0.93-0.98], P = .012; LBD: OR = 0.98 [0.96-0.99], P = .034). CONCLUSIONS Our findings indicate that an elevated number of CP sites predict future cognitive decline. Patients with dementia had lower exposure to anilides and NSAIDs, suggesting that they might not be adequately medicated for pain.
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Affiliation(s)
- Xingzhi Guo
- From the Department of Geriatric Neurology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, People's Republic of China
- Shaanxi Provincial Clinical Research Center for Geriatric Medicine, Xi'an, Shaanxi, People's Republic of China
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, People's Republic of China
| | - Chen Hou
- From the Department of Geriatric Neurology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, People's Republic of China
- Shaanxi Provincial Clinical Research Center for Geriatric Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Peng Tang
- From the Department of Geriatric Neurology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, People's Republic of China
- Shaanxi Provincial Clinical Research Center for Geriatric Medicine, Xi'an, Shaanxi, People's Republic of China
| | - Rui Li
- From the Department of Geriatric Neurology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, People's Republic of China
- Shaanxi Provincial Clinical Research Center for Geriatric Medicine, Xi'an, Shaanxi, People's Republic of China
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, People's Republic of China
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27
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Lin YK, Lin YH, Chiang CF, Jingling L. Effectiveness of Fish Roe, Snow Fungus, and Yeast Supplementation for Cognitive Function: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. Nutrients 2023; 15:4221. [PMID: 37836504 PMCID: PMC10574613 DOI: 10.3390/nu15194221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
The brain is one of the most critical organs in the human body, regulating functions such as thinking, memory, learning, and perception. Studies have indicated that fish roe, snow fungus, and yeast may have the potential to modulate cognitive, memory, and emotional functions. However, more relevant clinical research in this area still needs to be conducted. This study explored the cognition-enhancing potential of a formula beverage including fish roe, snow fungus, and yeast. Sixty-four subjects were divided into a placebo group (n = 32) and a formula-drink group (n = 32), who consumed the product for 8 weeks. Cognitive tests were administered and analyzed at weeks 0, 4, and 8. After 4 and 8 weeks, there was a significant increase in the number of memory cards, and the response times among those who consumed the formula beverage were significantly faster than those in the placebo group. The subjects remembered the old items better and were more impressed with similar items based on the week effect. There was a significant increase in the cue effect of happy facial expressions after the subjects consumed the formula beverage for 8 weeks. In addition, there was a significant decrease in anxiety and fatigue, and improved quality of life. This formula beverage is a promising option that could be used to prevent further cognitive decline in adults with subjective cognitive complaints.
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Affiliation(s)
- Yung-Kai Lin
- Institute of Food Safety and Risk Management, National Taiwan Ocean University, Keelung 20224, Taiwan;
- Department of Food Science, National Taiwan Ocean University, Keelung 202301, Taiwan
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yung-Hsiang Lin
- Research & Design Center, TCI Co., Ltd., Taipei 11494, Taiwan; (Y.-H.L.); (C.-F.C.)
| | - Chi-Fu Chiang
- Research & Design Center, TCI Co., Ltd., Taipei 11494, Taiwan; (Y.-H.L.); (C.-F.C.)
| | - Li Jingling
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 40402, Taiwan
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28
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Vranceanu AM, Choukas NR, Rochon EA, Duarte B, Pietrzykowski MO, McDermott K, Hooker JE, Kulich R, Quiroz YT, Parker RA, Macklin EA, Ritchie C, Mace RA. Addressing the Chronic Pain-Early Cognitive Decline Comorbidity Among Older Adults: Protocol for the Active Brains Remote Efficacy Trial. JMIR Res Protoc 2023; 12:e47319. [PMID: 37768713 PMCID: PMC10570897 DOI: 10.2196/47319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/01/2023] [Accepted: 05/31/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Chronic pain and early cognitive decline, which are costly to treat and highly prevalent among older adults, commonly co-occur, exacerbate one another over time, and can accelerate the development and progression of Alzheimer disease and related dementias. We developed the first mind-body activity program (Active Brains [AB]) tailored to the needs of older adults with chronic pain and early cognitive decline. Results from our previous study strongly supported the feasibility of conducting AB remotely and provided evidence for improvements in outcomes. OBJECTIVE We are conducting a single-blinded, National Institutes of Health stage-2, randomized clinical trial to establish the efficacy of AB versus a time-matched and dose-matched education control (Health Enhancement Program [HEP]) in improving self-reported and objective outcomes of physical, cognitive, and emotional functions in 260 participants. The methodology described in this paper was informed by the lessons learned from the first year of the trial. METHODS Participants are identified and recruited through multidisciplinary clinician-referred individuals (eg, pain psychologists and geriatricians), the Rally Research platform, social media, and community partnerships. Interested participants complete eligibility screening and electronic informed consent. Baseline assessments include self-report, performance-based measures (eg, 6-min walk test) and objective measures (eg, Repeatable Battery for the Assessment of Neuropsychological Status). Participants are mailed a wrist-worn ActiGraph device (ActiGraph LLC) to passively monitor objective function (eg, steps) during the week between the baseline assessment and the beginning of the programs, which they continue to wear throughout the programs. After baseline assessments, participants are randomized to either AB or HEP and complete 8 weekly, remote, group sessions with a Massachusetts General Hospital psychologist. The AB group receives a Fitbit (Fitbit Inc) to help reinforce increased activity. Assessments are repeated after the intervention and at the 6-month follow-up. Coprimary outcomes include multimodal physical function (self-report, performance based, and objective). Secondary outcomes are cognitive function (self-report and objective), emotional function, and pain. RESULTS We began recruitment in July 2022 and recruited 37 participants across 4 cohorts. Of them, all (n=37, 100%) have completed the baseline assessment, 26 (70%) have completed the posttest assessment, and 9 (24%) are actively enrolled in the intervention (total dropout: n=2, 5%). In the three cohorts (26/37, 70%) that have completed the AB or HEP, 26 (100%) participants completed all 8 group sessions (including minimal makeups), and watch adherence (1937/2072, 93.48%, average across ActiGraph and Fitbit devices) has been excellent. The fourth cohort is ongoing (9/37, 24%), and we plan to complete enrollment by March 2026. CONCLUSIONS We aim to establish the efficacy of the AB program over a time-matched and dose-matched control in a live video-based trial and test the mechanisms through theoretically driven mediators and moderators. Findings will inform the development of a future multisite effectiveness-implementation trial. TRIAL REGISTRATION ClinicalTrials.gov NCT05373745; https://classic.clinicaltrials.gov/ct2/show/NCT05373745. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/47319.
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Affiliation(s)
- Ana-Maria Vranceanu
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
| | - Nathaniel R Choukas
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
| | - Elizabeth A Rochon
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
| | - Brooke Duarte
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
| | - Malvina O Pietrzykowski
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
| | - Katherine McDermott
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
| | - Julia E Hooker
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
| | - Ronald Kulich
- Harvard Medical School, Boston, MA, United States
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, United States
| | - Yakeel T Quiroz
- Harvard Medical School, Boston, MA, United States
- Multicultural Alzheimer's Prevention Program, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
| | - Robert A Parker
- Harvard Medical School, Boston, MA, United States
- Biostatistics Center, Massachusetts General Hospital, Boston, MA, United States
| | - Eric A Macklin
- Harvard Medical School, Boston, MA, United States
- Biostatistics Center, Massachusetts General Hospital, Boston, MA, United States
| | - Christine Ritchie
- Harvard Medical School, Boston, MA, United States
- Mongan Institute Center for Aging and Serious Illness and the Division of Palliative Care and Geriatric Medicine, Department of Medicine, Massachusetts General Hospital, Boston, MA, United States
| | - Ryan A Mace
- Center for Health Outcomes and Interdisciplinary Research, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
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Bornier N, Mulliez A, Chenaf C, Elyn A, Teixeira S, Authier N, Bertin C, Kerckhove N. Chronic pain is a risk factor for incident Alzheimer's disease: a nationwide propensity-matched cohort using administrative data. Front Aging Neurosci 2023; 15:1193108. [PMID: 37842123 PMCID: PMC10575742 DOI: 10.3389/fnagi.2023.1193108] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/29/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction Chronic pain (CP) is one of the most disabling conditions in the elderly and seems to be a risk factor for the development of Alzheimer's disease and related dementias (ADRD). Only one study, using national administrative health databases, assessed and demonstrated that chronic pain (all types of pain) was a risk factor for dementia, but without assessing the impact of pain medications. Method To assess the impact of all types of chronic pain and the long-term use of pain medications on the person-years incidence of ADRD, a retrospective nationwide healthcare administrative data study was performed using the national inter-regime health insurance information system (SNIIRAM) to the French national health data system (SNDS). Incident people >50 years old with chronic pain, defined by at least 6-months duration analgesics treatment or by a diagnosis/long-term illness of chronic pain between 2006 and 2010, were included. Chronic pain individuals were matched with non-CP individuals by a propensity score. Individuals were followed up from 9 to 13 years to identify occurrences of ADRD from 2006. Results Among 64,496 French individuals, the incidence of ADRD was higher in the chronic pain population than control (1.13% vs. 0.95%, p <0.001). Chronic pain increases the risk of ADRD (HR = 1.23) and the incidence of ADRD was higher for women and increased significantly with age. Discussion Our study highlights the importance of prevention, diagnosis, and management of chronic pain in elderly to reduce the risk of development and/or worsening of dementia.
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Affiliation(s)
- Nadège Bornier
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Aurélien Mulliez
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Chouki Chenaf
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
- Institut Analgesia, Clermont-Ferrand, France
| | - Antoine Elyn
- Centre D’Évaluation et de Traitement de la Douleur, Service de Neurochirurgie, Pôle Neuroscience, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Sarah Teixeira
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Nicolas Authier
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
- Institut Analgesia, Clermont-Ferrand, France
| | - Célian Bertin
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
- Institut Analgesia, Clermont-Ferrand, France
| | - Nicolas Kerckhove
- Service de Pharmacologie Médicale, Direction de la Recherche Clinique et de L’Innovation, Université Clermont Auvergne, Clermont-Ferrand, France
- Institut Analgesia, Clermont-Ferrand, France
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30
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Shaikh A, Li YQ, Lu J. Perspectives on pain in Down syndrome. Med Res Rev 2023; 43:1411-1437. [PMID: 36924439 DOI: 10.1002/med.21954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 01/08/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023]
Abstract
Down syndrome (DS) or trisomy 21 is a genetic condition often accompanied by chronic pain caused by congenital abnormalities and/or conditions, such as osteoarthritis, recurrent infections, and leukemia. Although DS patients are more susceptible to chronic pain as compared to the general population, the pain experience in these individuals may vary, attributed to the heterogenous structural and functional differences in the central nervous system, which might result in abnormal pain sensory information transduction, transmission, modulation, and perception. We tried to elaborate on some key questions and possible explanations in this review. Further clarification of the mechanisms underlying such abnormal conditions induced by the structural and functional differences is needed to help pain management in DS patients.
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Affiliation(s)
- Ammara Shaikh
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning Province, China
| | - Yun-Qing Li
- Department of Anatomy, Histology, and Embryology & K. K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Department of Anatomy, Basic Medical College, Zhengzhou University, Zhengzhou, China
| | - Jie Lu
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning Province, China
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31
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Zheng QM, Zhou ZR, Hou XY, Lv N, Zhang YQ, Cao H. Transcriptome Analysis of the Mouse Medial Prefrontal Cortex in a Chronic Constriction Injury Model. Neuromolecular Med 2023; 25:375-387. [PMID: 36971954 DOI: 10.1007/s12017-023-08742-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 03/03/2023] [Indexed: 03/29/2023]
Abstract
The medial prefrontal cortex (mPFC) is critical for both the sensory and emotional/cognitive components of pain. However, the underlying mechanism remains largely unknown. Here, we examined changes in the transcriptomic profiles in the mPFC of mice with chronic pain using RNA sequencing (RNA-seq) technology. A mouse model of peripheral neuropathic pain was established via chronic constriction injury (CCI) of the sciatic nerve. CCI mice developed sustained mechanical allodynia and thermal hyperalgesia, as well as cognitive impairment four weeks after surgery. RNA-seq was conducted 4 weeks after CCI surgery. Compared with contral group, RNA-seq identified a total 309 and 222 differentially expressed genes (DEGs) in the ipsilateral and contralateral mPFC of CCI model mice, respectively. GO analysis indicated that the functions of these genes were mainly enriched in immune- and inflammation-related processes such as interferon-gamma production and cytokine secretion. KEGG analysis further showed the enrichment of genes involved in the neuroactive ligand-receptor interaction signaling pathway and Parkinson disease pathway that have been reported to be importantly involved in chronic neuralgia and cognitive dysfunction. Our study may provide insights into the possible mechanisms underlying neuropathic pain and pain-related comorbidities.
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Affiliation(s)
- Qi-Min Zheng
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Zi-Rui Zhou
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Xin-Yu Hou
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Ning Lv
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Yu-Qiu Zhang
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China
| | - Hong Cao
- Department of Translational Neuroscience, Jing'an District Centre Hospital of Shanghai, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, 200032, China.
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32
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Warfield AE, Gupta P, Ruhmann MM, Jeffs QL, Guidone GC, Rhymes HW, Thompson MI, Todd WD. A brainstem to circadian system circuit links Tau pathology to sundowning-related disturbances in an Alzheimer's disease mouse model. Nat Commun 2023; 14:5027. [PMID: 37596279 PMCID: PMC10439113 DOI: 10.1038/s41467-023-40546-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 07/26/2023] [Indexed: 08/20/2023] Open
Abstract
Alzheimer's disease (AD) patients exhibit progressive disruption of entrained circadian rhythms and an aberrant circadian input pathway may underlie such dysfunction. Here we examine AD-related pathology and circadian dysfunction in the APPSwe-Tau (TAPP) model of AD. We show these mice exhibit phase delayed body temperature and locomotor activity with increases around the active-to-rest phase transition. Similar AD-related disruptions are associated with sundowning, characterized by late afternoon and early evening agitation and aggression, and we show TAPP mice exhibit increased aggression around this transition. We show such circadian dysfunction and aggression coincide with hyperphosphorylated Tau (pTau) development in lateral parabrachial (LPB) neurons, with these disturbances appearing earlier in females. Finally, we show LPB neurons, including those expressing dynorphin (LPBdyn), project to circadian structures and are affected by pTau, and LPBdyn ablations partially recapitulate the hyperthermia of TAPP mice. Altogether we link pTau in a brainstem circadian input pathway to AD-related disturbances relevant to sundowning.
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Affiliation(s)
- Andrew E Warfield
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - Pooja Gupta
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - Madison M Ruhmann
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - Quiana L Jeffs
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - Genevieve C Guidone
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - Hannah W Rhymes
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA
| | - McKenzi I Thompson
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - William D Todd
- Department of Zoology and Physiology, Program in Neuroscience, University of Wyoming, Laramie, WY, USA.
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Jiang H, Qiu J, Deng X, Li D, Tao T. Potential active compounds and common mechanisms of Evodia rutaecarpa for Alzheimer's disease comorbid pain by network pharmacology analysis. Heliyon 2023; 9:e18455. [PMID: 37529338 PMCID: PMC10388172 DOI: 10.1016/j.heliyon.2023.e18455] [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: 02/11/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 08/03/2023] Open
Abstract
Evodia rutaecarpa (Evodia) is a Chinese herbal medicine with analgesic and anti-neurodegenerative properties. However, whether Evodia compounds can be applied for the comorbid pain of Alzheimer's disease (AD) and the underlying mechanisms remain unclear. Herein, 137 common targets of Evodia between AD and pain were predicted from drug and disease target databases. Subsequently, protein-protein interaction (PPI) network, protein function module construction, and bioinformatics analyses were used to analyze the potential relationship among targets, pathways, and diseases. Evodia could simultaneously treat AD comorbid pain through multi-target, multi-component, and multi-pathway mechanisms, and inflammation was an important common phenotype of AD and pain. The relationship between important transcription factors such as RELA, NF-κB1, SP1, STAT3, and JUN on IL-17, TNF, and MAPK signaling pathways might be potential mechanisms of Evodia. Additionally, 10 candidate compounds were predicted, and evodiamine might be the effective active ingredient of Evodia in treating AD or pain. In summary, this study provided a reference for subsequent research and a novel understanding and direction for the clinical use of evodiamine to treat AD patients with comorbid pain.
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Affiliation(s)
- Huiyi Jiang
- Department of Anesthesiology, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Zhanjiang, China
| | - Jiamin Qiu
- Department of Anesthesiology, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Zhanjiang, China
| | - Xin Deng
- Department of Anesthesiology, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Zhanjiang, China
| | - Danping Li
- Department of Anesthesiology, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Zhanjiang, China
| | - Tao Tao
- Department of Anesthesiology, Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
- Department of Anesthesiology, Central People's Hospital of Zhanjiang, Zhanjiang, China
- Department of Anesthesiology, Zhujiang hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
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Adamo D, Mignogna MD, Wang XQ, Femminella GD. Editorial: Chronic pain in neuropsychiatric diseases. Front Hum Neurosci 2023; 17:1213217. [PMID: 37378350 PMCID: PMC10292928 DOI: 10.3389/fnhum.2023.1213217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Affiliation(s)
- Daniela Adamo
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Michele D. Mignogna
- Department of Neuroscience, Reproductive Sciences and Dentistry, University of Naples Federico II, Naples, Italy
| | - Xue-Qiang Wang
- Department of Sport Rehabilitation, University of Sport, Shanghai University, Shanghai, China
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35
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Affiliation(s)
- Hongxin Dong
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
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36
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Ávila-Villanueva M, Dolado AM, Fernández-Blázquez M. How to Prevent and/or Revert Alzheimer's Disease Continuum During Preclinical Phases. J Alzheimers Dis Rep 2023; 7:505-512. [PMID: 37313496 PMCID: PMC10259072 DOI: 10.3233/adr220100] [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: 12/13/2022] [Accepted: 03/13/2023] [Indexed: 06/15/2023] Open
Abstract
The development of Alzheimer's disease (AD) follows three consecutive phases: namely preclinical, prodromal or mild cognitive impairment (MCI), and dementia. In addition, the preclinical phase can be divided into subphases related to the presence of biomarkers that appear at different points before the onset of MCI. Indeed, an early risk factor could promote the appearance of additional ones through a continuum. The presence of various risk factors may trigger specific biomarkers. In this review, we comment on how modifiable risk factors for AD may be reverted, thus correlating with a possible decrease in the specific biomarkers for the disease. Finally, we discuss the development of a suitable AD prevention strategy by targeting modifiable risk factors, thereby increasing the level of "precision medicine" in healthcare systems worldwide.
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Affiliation(s)
- Marina Ávila-Villanueva
- Research in Alzheimer’s Disease, Departamento de Psicología Experimental, Procesos Cognitivos y Logopedia Universidad Complutense de Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, Madrid, Spain
| | - Alberto Marcos Dolado
- Servicio de Neurología, Hospital Clínico San Carlos, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, Madrid, Spain
| | - Miguel Fernández-Blázquez
- Departamento de Psicología Biológica y de la Salud, Facultad de Psicología, Universidad Autónoma de Madrid, Madrid, Spain
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Ma X, Zhou S, Sun W, Sun J, Li G, Wang L, Guo Y. Efficacy and safety of duloxetine in chronic musculoskeletal pain: a systematic review and meta-analysis. BMC Musculoskelet Disord 2023; 24:394. [PMID: 37198620 DOI: 10.1186/s12891-023-06488-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 05/03/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND Chronic musculoskeletal pain (CMP) is a complex condition that is mainly treated with analgesic drugs. However, antidepressant intervention is also an important factor in the treatment of CMP. Duloxetine is an effective treatment option for patients with CMP as its antidepressant effect. The purpose of this article is to evaluate the efficacy and safety of duloxetine in treating CMP. DATABASES AND DATA TREATMENT We searched PubMed, Web of Science, Embase, Cochrane Library from inception to May, 2022. Randomized controlled trials (RCTs) evaluating the efficacy and safety of duloxetine versus placebo in patients with CMP were included. We identified 13 articles and studied a population of 4201 participants in 4 countries. RESULTS This meta-analysis showed that the duloxetine has statistically significant compared with the placebo control, benefits on 24-hour average pain, living quality, physical function, and global impressions and there was no difference in the incidence of serious adverse event. In general, duloxetine can improve mood and pain level at the same time. CONCLUSIONS This review shows a significant contribution of duloxetine to CMP symptom relief. This meta-analysis improved that duloxetine can significantly reduce the pain level of patients, improve depressive symptoms and global impression, and has no obvious serious adverse reactions. However, additional studies are required to confirm the relationship between psychological diseases and chronic pain and explore their internal links.
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Affiliation(s)
- Xuezhi Ma
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, China
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shijie Zhou
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, China
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wenyuan Sun
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, China
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jie Sun
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Guangguang Li
- Yixing Hospital of Traditional Chinese Medicine, Wuxi, Wuxi, China
| | - Lining Wang
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China.
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.
- Chinese Medicine Centre (International Collaboration between Western Sydney University and Beijing University of Chinese Medicine), Western Sydney University, Sydney, Australia.
| | - Yang Guo
- Laboratory of New Techniques of Restoration & Reconstruction of Orthopedics and Traumatology, Nanjing University of Chinese Medicine, Nanjing, China.
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Tian J, Jones G, Lin X, Zhou Y, King A, Vickers J, Pan F. Association between chronic pain and risk of incident dementia: findings from a prospective cohort. BMC Med 2023; 21:169. [PMID: 37143042 PMCID: PMC10161483 DOI: 10.1186/s12916-023-02875-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 04/19/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND Chronic musculoskeletal pain has been linked to dementia; however, chronic pain typically occurs in multiple sites; therefore, this study was to investigate whether greater number of chronic pain sites is associated with a higher risk of dementia and its subtypes. METHODS Participants (N = 356,383) in the UK Biobank who were dementia-free at baseline were included. Pain in the hip, knee, back, and neck/shoulder or 'all over the body' and its duration were assessed. Participants were categorised into six groups: no chronic pain; chronic pain in 1, 2, 3, and 4 sites, and 'all over the body'. All-cause dementia and its subtypes were ascertained using hospital inpatient and death registry records. Cox regression was used to investigate the associations between the number of chronic pain sites and the incidence of all-cause dementia and its subtypes. RESULTS Over a median follow-up of 13 years, 4959 participants developed dementia. After adjustment for sociodemographic, lifestyle, comorbidities, pain medications, psychological problems, and sleep factors, greater number of chronic pain sites was associated with an increased risk of incident all-cause dementia (hazard ratio [HR] = 1.08 per 1 site increase, 95% CI 1.05-1.11) and Alzheimer's disease (AD) (HR = 1.09 per 1-site increase, 95% CI 1.04-1.13) in a dose-response manner but not vascular and frontotemporal dementia. No significant association was found between the number of chronic pain sites and the risk of incident all-cause dementia among a subsample that underwent a fluid intelligence test. CONCLUSIONS Greater number of chronic pain sites was associated with an increased risk of incident all-cause dementia and AD, suggesting that chronic pain in multiple sites may contribute to individuals' dementia risk and is an underestimated risk factor for dementia.
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Affiliation(s)
- Jing Tian
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - Graeme Jones
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - Xin Lin
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - Yuan Zhou
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - Anna King
- Wicking Dementia Research and Education Centre, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - James Vickers
- Wicking Dementia Research and Education Centre, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia
| | - Feng Pan
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, TAS, Hobart, 7000, Australia.
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Fujikawa R, Tsuda M. The Functions and Phenotypes of Microglia in Alzheimer's Disease. Cells 2023; 12:cells12081207. [PMID: 37190116 DOI: 10.3390/cells12081207] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 05/17/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disease worldwide, but therapeutic strategies to slow down AD pathology and symptoms have not yet been successful. While attention has been focused on neurodegeneration in AD pathogenesis, recent decades have provided evidence of the importance of microglia, and resident immune cells in the central nervous system. In addition, new technologies, including single-cell RNA sequencing, have revealed heterogeneous cell states of microglia in AD. In this review, we systematically summarize the microglial response to amyloid-β and tau tangles, and the risk factor genes expressed in microglia. Furthermore, we discuss the characteristics of protective microglia that appear during AD pathology and the relationship between AD and microglia-induced inflammation during chronic pain. Understanding the diverse roles of microglia will help identify new therapeutic strategies for AD.
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Affiliation(s)
- Risako Fujikawa
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Makoto Tsuda
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
- Kyushu University Institute for Advanced Study, Fukuoka 819-0395, Japan
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40
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Chen M, Li S, Zhu Z, Dai C, Hao X. Investigating the shared genetic architecture and causal relationship between pain and neuropsychiatric disorders. Hum Genet 2023; 142:431-443. [PMID: 36445456 DOI: 10.1007/s00439-022-02507-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/14/2022] [Indexed: 11/30/2022]
Abstract
Pain often occurs in parallel with neuropsychiatric disorders. However, the underlying mechanisms and potential causality have not been well studied. We collected the genome-wide association study (GWAS) summary statistics of 26 common pain and neuropsychiatric disorders with sample size ranging from 17,310 to 482,730 in European population. The genetic correlation between pair of pain and neuropsychiatric disorders, as well as the relevant cell types were investigated by linkage disequilibrium (LD) score regression analyses. Then, transcriptome-wide association study (TWAS) was applied to identify the potential shared genes by integrating the gene expression information and GWAS. In addition, Mendelian randomization (MR) analyses were conducted to infer the potential causality between pain and neuropsychiatric disorders. Among the 169 pairwise pain and neuropsychiatric disorders, 55 pairs showed positive correlations (median rg = 0.43) and 9 pairs showed negative correlations (median rg = -0.31). Using MR analyses, 26 likely causal associations were identified, including that neuroticism and insomnia were risk factors for most of short-term pain, and multisite chronic pain was risk factor for neuroticism, insomnia, major depressive disorder and attention deficit/hyperactivity disorder, and vice versa. The signals of pain and neuropsychiatric disorders tended to be enriched in the functional regions of cell types from central nervous system (CNS). A total of 19 genes shared in at least one pain and neuropsychiatric disorder pair were identified by TWAS, including AMT, NCOA6, and UNC45A, which involved in glycine degradation, insulin secretion, and cell proliferation, respectively. Our findings provided the evidence of shared genetic structure, causality and potential shared pathogenic mechanisms between pain and neuropsychiatric disorders, and enhanced our understanding of the comorbidities of pain and neuropsychiatric disorders.
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Affiliation(s)
- Mengya Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Si Li
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Ziwei Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Chengguqiu Dai
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Xingjie Hao
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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41
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Zhao W, Zhao L, Chang X, Lu X, Tu Y. Elevated dementia risk, cognitive decline, and hippocampal atrophy in multisite chronic pain. Proc Natl Acad Sci U S A 2023; 120:e2215192120. [PMID: 36802440 PMCID: PMC9992778 DOI: 10.1073/pnas.2215192120] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 01/18/2023] [Indexed: 02/23/2023] Open
Abstract
Numerous studies have investigated the impacts of common types of chronic pain (CP) on patients' cognitive function and observed that CP was associated with later dementia. More recently, there is a growing recognition that CP conditions frequently coexist at multiple body sites and may bring more burdens on patients' overall health. However, whether and how multisite CP (MCP) contributes to an increased risk of dementia, compared to single-site CP (SCP) and pain-free (PF), is largely unclear. In the current study, utilizing the UK Biobank cohort, we first investigated dementia risk in individuals (n = 354,943) with different numbers of coexisting CP sites using Cox proportional hazards regression models. We then applied generalized additive models to investigate whether MCP leads to excessive deterioration of participants' (n = 19,116) cognition and brain structure. We found that individuals with MCP were associated with significantly higher dementia risk, broader and faster cognitive impairment, and greater hippocampal atrophy than both PF individuals and those with SCP. Moreover, the detrimental effects of MCP on dementia risk and hippocampal volume aggravated along with the number of coexisting CP sites. Mediation analyses further revealed that the decline of fluid intelligence in MCP individuals was partially mediated by hippocampal atrophy. Our results suggested that cognitive decline and hippocampal atrophy interact biologically and may underlie the increased risk of dementia associated with MCP.
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Affiliation(s)
- Wenhui Zhao
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Lei Zhao
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Xiangyu Chang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Xuejing Lu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Yiheng Tu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
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Shao S, Zheng Y, Fu Z, Wang J, Zhang Y, Wang C, Qi X, Gong T, Ma L, Lin X, Yu H, Yuan S, Wan Y, Zhang H, Yi M. Ventral hippocampal CA1 modulates pain behaviors in mice with peripheral inflammation. Cell Rep 2023; 42:112017. [PMID: 36662622 DOI: 10.1016/j.celrep.2023.112017] [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: 04/27/2022] [Revised: 09/12/2022] [Accepted: 01/06/2023] [Indexed: 01/21/2023] Open
Abstract
Chronic pain is one of the most significant medical problems throughout the world. Recent evidence has confirmed the hippocampus as an active modulator of pain chronicity, but the underlying mechanisms remain unclear. Using in vivo electrophysiology, we identify a neural ensemble in the ventral hippocampal CA1 (vCA1) that shows inhibitory responses to noxious but not innocuous stimuli. Following peripheral inflammation, this ensemble becomes responsive to innocuous stimuli, representing hypersensitivity. Mimicking the inhibition of vCA1 neurons using chemogenetics induces chronic pain-like behaviors in naive mice, whereas activating vCA1 neurons in mice with peripheral inflammation results in a reduction of pain-related behaviors. Pathway-specific manipulation of vCA1 projections to basolateral amygdala (BLA) and infralimbic cortex (IL) shows that these pathways are differentially involved in pain modulation at different temporal stages of chronic inflammatory pain. These results confirm a crucial role of the vCA1 and its circuits in modulating the development of chronic pain.
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Affiliation(s)
- Shan Shao
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Yawen Zheng
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Zibing Fu
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Jiaxin Wang
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Yu Zhang
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China; Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences (CAMS), Comparative Medicine Center, Peking Union Medical College (PUMC), Beijing 100021, P.R. China
| | - Cheng Wang
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China; Chinese Institute for Brain Research, Beijing 102206, P.R. China
| | - Xuetao Qi
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Tingting Gong
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Longyu Ma
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - Xi Lin
- Department of Civil Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Haitao Yu
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Shulu Yuan
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China
| | - You Wan
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China; Key Laboratory for Neuroscience, Ministry of Education / National Health Commission, Peking University, Beijing 100083, P.R. China
| | - Haolin Zhang
- Department of Traditional Chinese Medicine, Peking University Third Hospital, Beijing 100191, P.R. China.
| | - Ming Yi
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University, Beijing 100083, P.R. China; Key Laboratory for Neuroscience, Ministry of Education / National Health Commission, Peking University, Beijing 100083, P.R. China.
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Martorella G, Miao H, Wang D, Park L, Mathis K, Park J, Sheffler J, Granville L, Teixeira AL, Schulz PE, Ahn H. Feasibility, Acceptability, and Efficacy of Home-Based Transcranial Direct Current Stimulation on Pain in Older Adults with Alzheimer's Disease and Related Dementias: A Randomized Sham-Controlled Pilot Clinical Trial. J Clin Med 2023; 12:401. [PMID: 36675330 PMCID: PMC9860690 DOI: 10.3390/jcm12020401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/20/2022] [Accepted: 12/23/2022] [Indexed: 01/05/2023] Open
Abstract
Although transcranial direct current stimulation (tDCS) is emerging as a convenient pain relief modality for several chronic pain conditions, its feasibility, acceptability, and preliminary efficacy on pain in patients with Alzheimer's disease and related dementias (ADRD) have not been investigated. The purpose of this pilot study was to assess the feasibility, acceptability, and preliminary efficacy of 5, 20-min home-based tDCS sessions on chronic pain in older adults with ADRD. We randomly assigned 40 participants to active (n = 20) or sham (n = 20) tDCS. Clinical pain intensity was assessed using a numeric rating scale (NRS) with patients and a proxy measure (MOBID-2) with caregivers. We observed significant reductions of pain intensity for patients in the active tDCS group as reflected by both pain measures (NRS: Cohen's d = 0.69, p-value = 0.02); MOBID-2: Cohen's d = 1.12, p-value = 0.001). Moreover, we found home-based tDCS was feasible and acceptable intervention approach for pain in ADRD. These findings suggest the need for large-scale randomized controlled studies with larger samples and extended versions of tDCS to relieve chronic pain on the long-term for individuals with ADRD.
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Affiliation(s)
| | - Hongyu Miao
- College of Nursing, Florida State University, Tallahassee, FL 32306, USA
- Department of Statistics, Florida State University, Tallahassee, FL 32306, USA
| | - Duo Wang
- Department of Statistics, Florida State University, Tallahassee, FL 32306, USA
| | - Lindsey Park
- College of Nursing, Florida State University, Tallahassee, FL 32306, USA
| | - Kenneth Mathis
- The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, USA
| | - JuYoung Park
- Phyllis & Harvey Sandler School of Social Work, Florida Atlantic University College of Social Work and Criminal Justice, Boca Raton, FL 33431, USA
| | - Julia Sheffler
- College of Medicine, Florida State University, Tallahassee, FL 32306, USA
| | - Lisa Granville
- College of Medicine, Florida State University, Tallahassee, FL 32306, USA
| | - Antonio L. Teixeira
- The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, USA
| | - Paul E. Schulz
- The University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, USA
| | - Hyochol Ahn
- College of Nursing, Florida State University, Tallahassee, FL 32306, USA
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Xia S, Yu X, Chen G. Pain as a Protective Factor for Alzheimer Disease in Patients with Cancer. Cancers (Basel) 2022; 15:cancers15010248. [PMID: 36612244 PMCID: PMC9818585 DOI: 10.3390/cancers15010248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Alzheimer disease (AD) and cancer have been reported to be inversely correlated in incidence, but the mechanism remains elusive. METHODS A case-control study was conducted, based on the SEER (Surveillance, Epidemiology, and End Results) Research Plus data, to evaluate 12 factors in patients with cancer. RESULTS Severe pain was related to reduced AD risk, while older age at cancer diagnosis, female, longer survival years after tumor diagnosis, more benign/borderline tumors, less cancer-directed surgery, and more chemotherapy were associated with higher AD risk. In addition, patients of different races or with different cancer sites were associated with different risks of getting AD. Cases had a higher prevalence of severe pain than controls in all race and cancer site subgroups, except for in digestive cancer, where the result was the opposite. CONCLUSIONS This study indicated pain as a novel protective factor for AD in patients with cancer. The mechanism behind it may provide new perspective on AD pathogenesis and AD-cancer association, which we discussed in our own hypothesis of the mechanism of pain action. In addition, digestive cancer pain had an opposite impact on AD risk from other cancer pains, which suggests the uniqueness of digestive system in interacting with the central nervous system.
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Affiliation(s)
- Siqi Xia
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Zhejiang University, Hangzhou 310003, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou 310003, China
| | - Xiaobo Yu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Zhejiang University, Hangzhou 310003, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou 310003, China
| | - Gao Chen
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Zhejiang University, Hangzhou 310003, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou 310003, China
- Correspondence: ; Tel.: +86-1380-5716-226
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Silva R, Sideris-Lampretsas G, Fox S, Zeboudj L, Malcangio M. CD206 +/MHCII - macrophage accumulation at nerve injury site correlates with attenuation of allodynia in TASTPM mouse model of Alzheimer's disease. Brain Behav Immun Health 2022; 26:100548. [PMID: 36388139 PMCID: PMC9643400 DOI: 10.1016/j.bbih.2022.100548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
Chronic pain is undertreated in people with Alzheimer's disease (AD) and better understanding of the underlying mechanisms of chronic pain in this neurodegenerative disease is essential. Neuropathic pain and AD share a significant involvement of the peripheral immune system. Therefore, we examined the development of nerve injury-induced allodynia in TASTPM (APPsweXPS1.M146V) mice and assessed monocytes/macrophages at injury site. TASTPM developed partial allodynia compared to WT at days 7, 14 and 21 days after injury, and showed complete allodynia only after treatment with naloxone methiodide, a peripheralized opioid receptor antagonist. Since macrophages are one of the sources of endogenous opioids in the periphery, we examined macrophage infiltration at injury site and observed that CD206+/MHCII- cells were more numerous in TASTPM than WT. Accordingly, circulating TASTPM Ly6Chigh (classical) monocytes, which are pro-inflammatory and infiltrate at the site of injury, were less abundant than in WT. In in vitro experiments, TASTPM bone marrow-derived macrophages showed efficient phagocytosis of myelin extracts containing amyloid precursor protein, acquired CD206+/MHCII- phenotype, upregulated mRNA expression of proenkephalin (PENK) and accumulated enkephalins in culture media. These data suggest that in TASTPM nerve-injured mice, infiltrating macrophages which derive from circulating monocytes and may contain amyloid fragments, acquire M2-like phenotype after myelin engulfment, and release enkephalins which are likely to inhibit nociceptive neuron activity via activation of opioid receptors.
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Affiliation(s)
- Rita Silva
- Wolfson Centre for Age Related Diseases, King's College London, London, SE1 1UL, UK
| | | | - Sarah Fox
- Wolfson Centre for Age Related Diseases, King's College London, London, SE1 1UL, UK
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Rostami F, Abbasi Z, Fereidoni M. Long-term follow-up of intracerebroventricular injection of streptozotocin-inducing pain sensitization. Behav Pharmacol 2022; 33:542-550. [PMID: 36256700 DOI: 10.1097/fbp.0000000000000701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Age is known to be the major risk factor for both pain sensation and sporadic Alzheimer's disease (sAD). Pain management in AD is a critical health condition. However, assessing pain in sAD patients is challenging. The intracerebroventricularly injected streptozotocin (icv-STZ) rat model of sAD has been brought to the fore as a hopefully suitable model that could mimic some features of sAD. However, the exact mechanism by which this agent may induce AD-like pathology is largely unknown. In some studies, analgesic drugs have been suggested as possible prevention of AD and icv-STZ-induced AD-like pathology. Therefore, this study used formalin and tail-flick tests to investigate whether different doses of icv-STZ injections could affect acute and inflammatory pain sensation and edema volume over time. Behavioral responses were observed at four testing time points (1, 2.5, 3.5, and 6 months postinjection). The results indicate that icv-STZ was able to significantly decrease the animals' formalin pain threshold in both a time- and dose-dependent manner. Formalin-induced acute and chronic pain scores of animals treated with streptozotocin 3 mg/kg (STZ3) increased dramatically 2.5 months after injection and persisted thereafter. The augmentation in pain score induced by streptozotocin 1 mg/kg (STZ1) was observed from 3.5 months after STZ injection. However, the effect of streptozotocin 0.5 mg/kg (STZ0.5) was NS until 6 months after injection. However, formalin-induced paw edema occurred with a longer delay and was not detectable in STZ0.5-treated animals. In addition, only STZ3-treated animals significantly reduced the thermal pain threshold of animals 6 months after injection. These observations indicate that icv-STZ can sensitize central and/or peripheral receptors to pain. The effect of STZ is dose- and time-dependent. AD-like pathology induced by icv-STZ could be partially activated via pain processing pathways. Therefore, anti-inflammatory agents could alleviate AD-like symptoms via pain treatments.
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Affiliation(s)
- Farzaneh Rostami
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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Mielke MM, Aggarwal NT, Vila‐Castelar C, Agarwal P, Arenaza‐Urquijo EM, Brett B, Brugulat‐Serrat A, DuBose LE, Eikelboom WS, Flatt J, Foldi NS, Franzen S, Gilsanz P, Li W, McManus AJ, van Lent DM, Milani SA, Shaaban CE, Stites SD, Sundermann E, Suryadevara V, Trani J, Turner AD, Vonk JMJ, Quiroz YT, Babulal GM. Consideration of sex and gender in Alzheimer's disease and related disorders from a global perspective. Alzheimers Dement 2022; 18:2707-2724. [PMID: 35394117 PMCID: PMC9547039 DOI: 10.1002/alz.12662] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/15/2022] [Accepted: 02/20/2022] [Indexed: 01/31/2023]
Abstract
Sex or gender differences in the risk of Alzheimer's disease and related dementias (ADRD) differ by world region, suggesting that there are potentially modifiable risk factors for intervention. However, few epidemiological or clinical ADRD studies examine sex differences; even fewer evaluate gender in the context of ADRD risk. The goals of this perspective are to: (1) provide definitions of gender, biologic sex, and sexual orientation. and the limitations of examining these as binary variables; (2) provide an overview of what is known with regard to sex and gender differences in the risk, prevention, and diagnosis of ADRD; and (3) discuss these sex and gender differences from a global, worldwide perspective. Identifying drivers of sex and gender differences in ADRD throughout the world is a first step in developing interventions unique to each geographical and sociocultural area to reduce these inequities and to ultimately reduce global ADRD risk. HIGHLIGHTS: The burden of dementia is unevenly distributed geographically and by sex and gender. Scientific advances in genetics and biomarkers challenge beliefs that sex is binary. Discrimination against women and sex and gender minority (SGM) populations contributes to cognitive decline. Sociocultural factors lead to gender inequities in Alzheimer's disease and related dementias (ADRD) worldwide.
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Affiliation(s)
- Michelle M. Mielke
- Division of Epidemiology, Department of Quantitative Health SciencesMayo ClinicRochesterMinnesotaUSA
- Department of NeurologyMayo ClinicRochesterMinnesotaUSA
| | - Neelum T. Aggarwal
- Department of Neurological SciencesRush University Medical CenterChicagoIllinoisUSA
- Rush Alzheimer's Disease CenterRush University Medical CenterChicagoIllinoisUSA
| | - Clara Vila‐Castelar
- Department of Psychiatry, Harvard Medical SchoolMassachusetts General HospitalMassachusettsBostonUSA
| | - Puja Agarwal
- Rush Alzheimer's Disease CenterRush University Medical CenterChicagoIllinoisUSA
- Department of Internal MedicineRush University Medical CenterChicagoIllinoisUSA
| | - Eider M. Arenaza‐Urquijo
- Barcelonaβeta Brain Research Center (BBRC)Pasqual Maragall FoundationBarcelonaSpain
- IMIM (Hospital del Mar Medical Research Institute)BarcelonaSpain
- CIBER Fragilidad y Envejecimiento Saludable (CIBERFES)MadridSpain
| | - Benjamin Brett
- Department of NeurosurgeryMedical College of WisconsinWisconsinMilwaukeeUSA
| | - Anna Brugulat‐Serrat
- Barcelonaβeta Brain Research Center (BBRC)Pasqual Maragall FoundationBarcelonaSpain
- IMIM (Hospital del Mar Medical Research Institute)BarcelonaSpain
- CIBER Fragilidad y Envejecimiento Saludable (CIBERFES)MadridSpain
- Atlantic Fellow for Equity in Brain HealthThe University of California San FranciscoSan FranciscoCaliforniaUSA
| | - Lyndsey E. DuBose
- Department of Medicine, Division of GeriatricsUniversity of Colorado Anschutz Medical CampusAuroraColoradoUSA
| | - Willem S. Eikelboom
- Department of NeurologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Jason Flatt
- Social and Behavioral Health Program, School of Public HealthUniversity of Nevada, Las VegasLas VegasNevadaUSA
| | - Nancy S. Foldi
- Department of Psychology, Queens College and The Graduate CenterCity University of New YorkNew YorkUSA
- Department of PsychiatryNew York University Long Island School of MedicineNew YorkUSA
| | - Sanne Franzen
- Department of NeurologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Paola Gilsanz
- Kaiser Permanente Division of ResearchOaklandCaliforniaUSA
| | - Wei Li
- Department of Clinical and Diagnostic SciencesUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Alison J. McManus
- Department of NeurologyMassachusetts General HospitalBostonMassachusettsUSA
| | - Debora Melo van Lent
- UT Health San AntonioGlenn Biggs Institute for Alzheimer's and Neurodegenerative diseasesSan AntonioTexasUSA
- Framingham Heart StudyFraminghamMassachusettsUSA
- Department of NeurologyBoston University School of MedicineBostonMassachusettsUSA
| | - Sadaf Arefi Milani
- Division of Geriatrics & Palliative Medicine, Department of Internal MedicineUniversity of Texas Medical BranchGalvestonTexasUSA
| | - C. Elizabeth Shaaban
- Department of EpidemiologyGraduate School of Public HealthUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Shana D. Stites
- Department of PsychiatryPerlman School of MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Erin Sundermann
- Department of PsychiatryUniversity of CaliforniaSan DiegoCaliforniaUSA
| | - Vidyani Suryadevara
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Jean‐Francoise Trani
- Department of Public HealthWashington University in St. LouisSt. LouisMissouriUSA
| | - Arlener D. Turner
- Department of Psychiatry & Behavioral SciencesUniversity of Miami Miller School of MedicineMiamiFloridaUSA
| | - Jet M. J. Vonk
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, College of Physicians and SurgeonsColumbia UniversityNew YorkNew YorkUSA
- Julius Center for Health Sciences and Primary CareDepartment of EpidemiologyUniversity Medical Center Utrecht and Utrecht UniversityUtrechtThe Netherlands
| | - Yakeel T. Quiroz
- Department of Psychiatry, Harvard Medical SchoolMassachusetts General HospitalMassachusettsBostonUSA
- Grupo de Neurociencias de Antioquia of Universidad de AntioquiaMedellinColumbiaUSA
| | - Ganesh M. Babulal
- Department of NeurologyWashington University in St. LouisSt. LouisMississippiUSA
- Department of Clinical Research and LeadershipThe George Washington University School of Medicine and Health SciencesWashingtonDCUSA
- Department of Psychology, Faculty of HumanitiesUniversity of JohannesburgJohannesburgSouth Africa
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Kaisis E, Thei LJ, Stephens GJ, Dallas ML. Protofibrillar Amyloid Beta Modulation of Recombinant hCaV2.2 (N-Type) Voltage-Gated Channels. Pharmaceuticals (Basel) 2022; 15:ph15121459. [PMID: 36558910 PMCID: PMC9783047 DOI: 10.3390/ph15121459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022] Open
Abstract
Cav2.2 channels are key regulators of presynaptic Ca2+ influx and their dysfunction and/or aberrant regulation has been implicated in many disease states; however, the nature of their involvement in Alzheimer's disease (AD) is less clear. In this short communication, we show that recombinant hCav2.2/b1b/a2d1 channels are modulated by human synthetic AD-related protofibrillar amyloid beta Ab1-42 peptides. Structural studies revealed a time-dependent increase in protofibril length, with the majority of protofibrils less than 100 nm at 24 h, while at 48 h, the majority were longer than 100 nm. Cav2.2 modulation by Ab1-42 was different between a 'low' (100 nM) and 'high' (1 µM) concentration in terms of distinct effects on individual biophysical parameters. A concentration of 100 nM Ab1-42 caused no significant changes in the measured biophysical properties of Cav2.2 currents. In contrast, 1 µM Ab1-42 caused an inhibitory decrease in the current density (pA/pF) and maximum conductance (Gmax), and a depolarizing shift in the slope factor (k). These data highlight a differential modulation of Cav2.2 channels by the Ab1-42 peptide. Discrete changes in the presynaptic Ca2+ flux have been reported to occur at an early stage of AD; therefore, this study reveals a potential mechanistic link between amyloid accumulation and Cav2.2 channel modulation.
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Interaction effects of intracerebroventricular injection of crocin with the α2-adrenoceptors on memory deficit and hippocampal synaptic plasticity following chronic pain in rat. Brain Res Bull 2022; 190:168-178. [DOI: 10.1016/j.brainresbull.2022.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/15/2022] [Accepted: 10/06/2022] [Indexed: 11/21/2022]
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50
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Shared Genetic Regulatory Networks Contribute to Neuropathic and Inflammatory Pain: Multi-Omics Systems Analysis. Biomolecules 2022; 12:biom12101454. [PMID: 36291662 PMCID: PMC9599593 DOI: 10.3390/biom12101454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/27/2022] [Accepted: 10/07/2022] [Indexed: 11/17/2022] Open
Abstract
The mechanisms of chronic pain are complex, and genetic factors play an essential role in the development of chronic pain. Neuropathic pain (NP) and inflammatory pain (IP) are two primary components of chronic pain. Previous studies have uncovered some common biological processes in NP and IP. However, the shared genetic mechanisms remained poorly studied. We utilized multi-omics systematic analyses to investigate the shared genetic mechanisms of NP and IP. First, by integrating several genome-wide association studies (GWASs) with multi-omics data, we revealed the significant overlap of the gene co-expression modules in NP and IP. Further, we uncovered the shared biological pathways, including the previously reported mitochondrial electron transport and ATP metabolism, and stressed the role of genetic factors in chronic pain with neurodegenerative diseases. Second, we identified 24 conservative key drivers (KDs) contributing to NP and IP, containing two well-established pain genes, IL1B and OPRM1, and some novel potential pain genes, such as C5AR1 and SERPINE1. The subnetwork of those KDs highlighted the processes involving the immune system. Finally, gene expression analysis of the KDs in mouse models underlined two of the KDs, SLC6A15 and KCNQ5, with unidirectional regulatory functions in NP and IP. Our study provides strong evidence to support the current understanding of the shared genetic regulatory networks underlying NP and IP and potentially benefit the future common therapeutic avenues for chronic pain.
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