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Wang J, Zhu L, Li C, Lin Y, Wang B, Lin X, Bi Y. The relationship between intraoperative hypothermia and postoperative delirium: The PNDRFAP study. Brain Behav 2024; 14:e3512. [PMID: 38747874 PMCID: PMC11095299 DOI: 10.1002/brb3.3512] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 03/16/2024] [Accepted: 04/13/2024] [Indexed: 05/18/2024] Open
Abstract
OBJECTIVE Our study aimed to investigate the correlation between intraoperative hypothermia and postoperative delirium (POD) in patients undergoing general anesthesia for gastrointestinal surgery. METHODS The study comprised 750 participants from the Perioperative Neurocognitive Disorder Risk Factor and Prognosis (PNDRFAP) study database, which ultimately screened 510 individuals in the final analysis. Preoperative cognitive function was evaluated using the Mini-Mental State Examination (MMSE). The occurrence of POD was determined using the Confusion Assessment Method, and the severity of POD was evaluated using the Memorial Delirium Assessment Scale. Logistic regression was employed to scrutinize the association between intraoperative hypothermia and the incidence of POD, and the sensitivity analysis was conducted by introducing adjusted confounding variables. Decision curves and a nomogram model were utilized to assess the predictive efficacy of intraoperative hypothermia for POD. Mediation analysis involving 10,000 bootstrapped iterations was employed to appraise the suggested mediating effect of numeric rating scale (NRS) scores at 24 and 48 h post-surgeries. The receiver-operating characteristic (ROC) was utilized to evaluate the effectiveness of intraoperative hypothermia in predicting POD. RESULTS In the PNDRFAP study, the occurrence of POD was notably higher in the intraoperative hypothermia group (62.2%) compared to the intraoperative normal body temperature group (9.8%), with an overall POD incidence of 17.6%. Logistic regression analysis, adjusted for various confounding factors (age [40-90], gender, education, MMSE, smoking history, drinking history, hypertension, diabetes, and the presence of cardiovascular heart disease), demonstrated that intraoperative hypothermia significantly increased the risk of POD (OR = 4.879, 95% CI = 3.020-7.882, p < .001). Mediation analyses revealed that the relationship between intraoperative hypothermia and POD was partially mediated by NRS 24 h after surgery, accounting for 14.09% of the association (p = .002). The area under the curve of the ROC curve was 0.685, which confirmed that intraoperative hypothermia could predict POD occurrence to a certain extent. Decision curve and nomogram analyses, conducted using the R package, further substantiated the predictive efficacy of intraoperative hypothermia on POD. CONCLUSION Intraoperative hypothermia may increase the risk of POD, and this association may be partially mediated by NRS scores 24 h after surgery.
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Affiliation(s)
- Jiahan Wang
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
| | - Lei Zhu
- Department of Medical Scientific ResearchQingdao Municipal HospitalQingdaoChina
| | - Chuan Li
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
| | - Yanan Lin
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
| | - Bin Wang
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
| | - Xu Lin
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
| | - Yanlin Bi
- Department of AnesthesiologyQingdao Municipal HospitalQingdaoChina
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Brain temperature in healthy and diseased conditions: A review on the special implications of MRS for monitoring brain temperature. Biomed Pharmacother 2023; 160:114287. [PMID: 36709597 DOI: 10.1016/j.biopha.2023.114287] [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: 11/27/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/30/2023] Open
Abstract
Brain temperature determines not only an individual's cognitive functionality but also the prognosis and mortality rates of many brain diseases. More specifically, brain temperature not only changes in response to different physiological events like yawning and stretching, but also plays a significant pathophysiological role in a number of neurological and neuropsychiatric illnesses. Here, we have outlined the function of brain hyperthermia in both diseased and healthy states, focusing particularly on the amyloid beta aggregation in Alzheimer's disease.
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Alagiakrishnan K, Dhami P, Senthilselvan A. Predictors of Conversion to Dementia in Patients With Mild Cognitive Impairment: The Role of Low Body Temperature. J Clin Med Res 2023; 15:216-224. [PMID: 37187716 PMCID: PMC10181356 DOI: 10.14740/jocmr4883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/30/2023] [Indexed: 05/17/2023] Open
Abstract
Background Subjects with mild cognitive impairment (MCI) can progress to dementia. Studies have shown that neuropsychological tests, biological or radiological markers individually or in combination have helped to determine the risk of conversion from MCI to dementia. These techniques are complex and expensive, and clinical risk factors were not considered in these studies. This study examined demographic, lifestyle and clinical factors including low body temperature that may play a role in the conversion of MCI to dementia in elderly patients. Methods In this retrospective study, a chart review was conducted on patients aged 61 to 103 years who were seen at the University of Alberta Hospital. Information on onset of MCI and demographic, social, and lifestyle factors, family history of dementia and clinical factors, and current medications at baseline was collected from patient charts on an electronic database. The conversion from MCI to dementia within 5.5 years was also determined. Logistic regression analysis was conducted to identify the baseline factors associated with conversion from MCI to dementia. Results The prevalence of MCI at baseline was 25.6% (335/1,330). During the 5.5 years follow-up period, 43% (143/335) of the subjects converted to dementia from MCI. The factors that were significantly associated with conversion from MCI to dementia were family history of dementia (odds ratio (OR): 2.78, 95% confidence interval (CI): 1.56 - 4.95, P = 0.001), Montreal cognitive assessment (MoCA) score (OR: 0.91, 95% CI: 0.85 - 0.97, P = 0.01), and low body temperature (below 36 °C) (OR: 10.01, 95% CI: 3.59 - 27.88, P < 0.001). Conclusion In addition to family history of dementia and MoCA, low body temperature was shown to be associated with the conversion from MCI to dementia. This study would help clinicians to identify patients with MCI who are at highest risk of conversion to dementia.
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Affiliation(s)
- Kannayiram Alagiakrishnan
- Division of Geriatric Medicine, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- Corresponding Author: Kannayiram Alagiakrishnan, Clinical Sciences Building, University of Alberta Hospital, Edmonton, AB T6G 2P4, Canada.
| | - Prabhpaul Dhami
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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Deletion of UCP1 in Tg2576 Mice Increases Body Temperature and Exacerbates Alzheimer's Disease-Related Pathologies. Int J Mol Sci 2023; 24:ijms24032741. [PMID: 36769062 PMCID: PMC9917061 DOI: 10.3390/ijms24032741] [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: 12/22/2022] [Revised: 01/26/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
We previously demonstrated that the Alzheimer's disease (AD)-like model mice, Tg2576, housed at a high ambient temperature of 30 °C for 13 months, exhibited increased body temperature, which increased amyloid-β (Aβ) levels and tau stability, leading to tau phosphorylation and ultimately inducing memory impairment. Here, we aimed to exclude the possible effect of environmental factors associated with the difference in ambient temperature (23 °C vs. 30 °C) and to further clarify the effects of elevated body temperature on AD-like pathologies. We generated uncoupling protein 1 (UCP1) deletion in Tg2576 mice, Tg2576/UCP1-/-, because UCP1 deletion mice show a sustained rise in body temperature at normal room temperature. As expected, the body temperature in Tg2576/UCP1-/- mice was higher than that in Tg2576/ UCP1+/+ mice at 23 °C, which was accompanied by upregulated Aβ levels due to increased β-secretase (BACE1) and decreased neprilysin (NEP) protein levels in the brains of Tg2576/UCP1-/- mice compared with those in the Tg2576/ UCP1+/+ mice. Elevated body temperature also increased total tau levels, leading to enhanced phosphorylation, heat shock protein induction, and activated tau kinases. Furthermore, elevated body temperature enhanced glial activation and decreased synaptic protein levels in the brain. Taken together, these findings demonstrate that elevated body temperatures exacerbate AD-like pathologies.
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Tayanloo-Beik A, Nikkhah A, Alaei S, Goodarzi P, Rezaei-Tavirani M, Mafi AR, Larijani B, Shouroki FF, Arjmand B. Brown adipose tissue and alzheimer's disease. Metab Brain Dis 2023; 38:91-107. [PMID: 36322277 DOI: 10.1007/s11011-022-01097-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/01/2022] [Indexed: 01/12/2023]
Abstract
Alzheimer's disease (AD), the most common type of senile dementia, is a chronic neurodegenerative disease characterized by cognitive dysfunction and behavioral disability. The two histopathological hallmarks in this disease are the extraneuronal accumulation of amyloid-β (Aβ) and the intraneuronal deposition of neurofibrillary tangles (NFTs). Despite this, central and peripheral metabolic dysfunction, such as abnormal brain signaling, insulin resistance, inflammation, and impaired glucose utilization, have been indicated to be correlated with AD. There is solid evidence that the age-associated thermoregulatory deficit induces diverse metabolic changes associated with AD development. Brown adipose tissue (BAT) has been known as a thermoregulatory organ particularly vital during infancy. However, in recent years, BAT has been accepted as an endocrine organ, being involved in various functions that prevent AD, such as regulating energy metabolism, secreting hormones, improving insulin sensitivity, and increasing glucose utilization in adult humans. This review focuses on the mechanisms of BAT activation and the effect of aging on BAT production and signaling. Specifically, the evidence demonstrating the effect of BAT on pathological mechanisms influencing the development of AD, including insulin pathway, thermoregulation, and other hormonal pathways, are reviewed in this article.
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Affiliation(s)
- Akram Tayanloo-Beik
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirabbas Nikkhah
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Setareh Alaei
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Parisa Goodarzi
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Ahmad Rezazadeh Mafi
- Department of Radiation Oncology, Imam Hossein Hospital, Shaheed Beheshti Medical University, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical sciences, Tehran, Iran.
| | - Fatemeh Fazeli Shouroki
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Babak Arjmand
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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McFadden S, Sime LN, Cox MKF, Findley CA, Peck MR, Quinn K, Fang Y, Bartke A, Hascup ER, Hascup KN. Chronic, Mild Hypothermic Environmental Temperature does not Ameliorate Cognitive Deficits in an Alzheimer's Disease Mouse. J Gerontol A Biol Sci Med Sci 2022:6832816. [PMID: 36398842 DOI: 10.1093/gerona/glac223] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Indexed: 11/19/2022] Open
Abstract
Metabolic dysfunction increases with age and is a contributing factor to Alzheimer's disease (AD) development. We have previously observed impaired insulin sensitivity and glucose homeostasis in the APP/PS1 model of AD. To improve these parameters, we chronically exposed male and female mice to mild hypothermic environmental temperature (eT), which positively modulates metabolism. Although a hypothermic eT normalized insulin sensitivity, glucose tolerance was still impaired in both sexes of AD mice. We observed increased plasma glucagon and BAFF in both sexes, but additional sexually dimorphic mechanisms may explain the impaired glucose homeostasis in AD mice. Hepatic Glut2 was decreased in female while visceral adipose tissue TNFα was increased in male APP/PS1 mice. A mild hypothermic eT did not improve spatial learning and memory in either sex and increased amyloid plaque burden in male APP/PS1 mice. Overall, plasma markers of glucose homeostasis and AD pathology were worse in female compared to male APP/PS1 mice suggesting a faster disease progression. This could affect therapeutic outcome if interventional strategies are administered at the same chronological age to male and female APP/PS1 mice. Furthermore, this data suggests a dichotomy exists between mechanisms to improve metabolic function and cognitive health that may be further impaired in AD.
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Affiliation(s)
- Samuel McFadden
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Lindsey N Sime
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Ma Kayla F Cox
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Caleigh A Findley
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA.,Department of Pharmacology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Mackenzie R Peck
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Kathleen Quinn
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Yimin Fang
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA
| | - Andrzej Bartke
- Department of Internal Medicine, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA.,Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Erin R Hascup
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA.,Department of Pharmacology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA
| | - Kevin N Hascup
- Department of Neurology, Dale and Deborah Smith Center for Alzheimer's Research and Treatment, Neurosciences Institute, Springfield, IL, USA.,Department of Pharmacology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA.,Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA
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Sauna-like conditions or menthol treatment reduce tau phosphorylation through mild hyperthermia. Neurobiol Aging 2022; 113:118-130. [DOI: 10.1016/j.neurobiolaging.2022.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 02/02/2022] [Accepted: 02/20/2022] [Indexed: 02/08/2023]
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Patel H, Martinez P, Perkins A, Taylor X, Jury N, McKinzie D, Lasagna-Reeves CA. Pathological tau and reactive astrogliosis are associated with distinct functional deficits in a mouse model of tauopathy. Neurobiol Aging 2022; 109:52-63. [PMID: 34655981 PMCID: PMC8671336 DOI: 10.1016/j.neurobiolaging.2021.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/12/2021] [Accepted: 09/05/2021] [Indexed: 01/03/2023]
Abstract
Pathological aggregation of tau and neuroinflammatory changes mark the clinical course of Alzheimer's disease and related tauopathies. To understand the correlation between these pathological hallmarks and functional deficits, we assessed behavioral and physiological deficits in the PS19 mouse model, a broadly utilized model of tauopathy. At 9 months, PS19 mice have characteristic hyperactive behavior, a decline in motor strength, and deterioration in physiological conditions marked by lower body temperature, reduced body weight, and an increase in measures of frailty. Correlation of these deficits with different pathological hallmarks revealed that pathological tau species, characterized by soluble p-tau species, and tau seeding bioactivity correlated with impairment in grip strength and thermal regulation. On the other hand, astrocyte reactivity showed a positive correlation with the hyperactive behavior of the PS19 mice. These results suggest that a diverse spectrum of soluble pathological tau species could be responsible for different symptoms and that neuroinflammation could contribute to functional deficits independently from tau pathology. These observations enhance the necessity of a multi-targeted approach for the treatment of neurodegenerative tauopathies.
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Affiliation(s)
- Henika Patel
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Pablo Martinez
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Abigail Perkins
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Xavier Taylor
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Nur Jury
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - David McKinzie
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Cristian A. Lasagna-Reeves
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN, 46202, USA,Corresponding author: Cristian A. Lasagna-Reeves, Ph.D., Indiana University School of Medicine, The Stark Neurosciences Research Institute, Neurosciences Research Building 214G, 320 West 15th Street, Indianapolis, IN, 46202, Office: (317) 274-7830,
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Tournissac M, Leclerc M, Valentin-Escalera J, Vandal M, Bosoi CR, Planel E, Calon F. Metabolic determinants of Alzheimer's disease: A focus on thermoregulation. Ageing Res Rev 2021; 72:101462. [PMID: 34534683 DOI: 10.1016/j.arr.2021.101462] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/09/2021] [Accepted: 09/11/2021] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is a complex age-related neurodegenerative disease, associated with central and peripheral metabolic anomalies, such as impaired glucose utilization and insulin resistance. These observations led to a considerable interest not only in lifestyle-related interventions, but also in repurposing insulin and other anti-diabetic drugs to prevent or treat dementia. Body temperature is the oldest known metabolic readout and mechanisms underlying its maintenance fail in the elderly, when the incidence of AD rises. This raises the possibility that an age-associated thermoregulatory deficit contributes to energy failure underlying AD pathogenesis. Brown adipose tissue (BAT) plays a central role in thermogenesis and maintenance of body temperature. In recent years, the modulation of BAT activity has been increasingly demonstrated to regulate energy expenditure, insulin sensitivity and glucose utilization, which could also provide benefits for AD. Here, we review the evidence linking thermoregulation, BAT and insulin-related metabolic defects with AD, and we propose mechanisms through which correcting thermoregulatory impairments could slow the progression and delay the onset of AD.
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10
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Bongioanni P, Del Carratore R, Corbianco S, Diana A, Cavallini G, Masciandaro SM, Dini M, Buizza R. Climate change and neurodegenerative diseases. ENVIRONMENTAL RESEARCH 2021; 201:111511. [PMID: 34126048 DOI: 10.1016/j.envres.2021.111511] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
The climate change induced global warming, and in particular the increased frequency and intensity of heat waves, have been linked to health problems. Among them, scientific works have been reporting an increased incidence of neurological diseases, encompassing also neurodegenerative ones, such as Dementia of Alzheimer's type, Parkinson's Disease, and Motor Neuron Diseases. Although the increase in prevalence of neurodegenerative diseases is well documented by literature reports, the link between global warming and the enhanced prevalence of such diseases remains elusive. This is the main theme of our work, which aims to examine the connection between high temperature exposure and neurodegenerative diseases. Firstly, we evaluate the influence of high temperatures exposure on the pathophysiology of these disorders. Secondly, we discuss its effects on the thermoregulation, already compromised in affected patients, and its interference with processes of excitotoxicity, oxidative stress and neuroinflammation, all of them related with neurodegeneration. Finally, we investigate chronic versus acute stressors on body warming, and put forward a possible interpretation of the beneficial or detrimental effects on the brain, which is responsible for the incidence or progression of neurological disorders.
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Affiliation(s)
- Paolo Bongioanni
- Severe Acquired Brain Injuries Dpt Section, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy; NeuroCare Onlus, Pisa, Italy
| | | | - Silvia Corbianco
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy; Human Movement and Rehabilitation Research Laboratory, Pisa, Italy
| | - Andrea Diana
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Gabriella Cavallini
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy
| | - Silvia M Masciandaro
- NeuroCare Onlus, Pisa, Italy; Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Marco Dini
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy; Human Movement and Rehabilitation Research Laboratory, Pisa, Italy
| | - Roberto Buizza
- Scuola Superiore Sant'Anna and Centre for Climate Change Studies and Sustainable Actions (3CSA), Pisa, Italy
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Pražienková V, Schirmer C, Holubová M, Železná B, Kuneš J, Galas MC, Maletínská L. Lipidized Prolactin-Releasing Peptide Agonist Attenuates Hypothermia-Induced Tau Hyperphosphorylation in Neurons. J Alzheimers Dis 2020; 67:1187-1200. [PMID: 30689580 DOI: 10.3233/jad-180837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Alzheimer's disease (AD) is one of the most prevalent neurodegenerative diseases, characterized by the accumulation of extracellular amyloid plaques and intraneuronal neurofibrillary tangles. These tangles mainly consist of hyperphosphorylated tau protein. As it induces tau hyperphosphorylation in vitro and in vivo, hypothermia is a useful tool for screening potential neuroprotective compounds that ameliorate tau pathology. In this study, we examined the effect of prolactin-releasing peptide (PrRP), its lipidized analog palm11-PrRP31 and glucagon-like-peptide-1 agonist liraglutide, substances with anorexigenic and antidiabetic properties, on tau phosphorylation and on the main kinases and phosphatases involved in AD development. Our study was conducted in a neuroblastoma cell line SH-SY5Y and rat primary neuronal cultures under normothermic and hypothermic conditions. Hypothermia induced a significant increase in tau phosphorylation at the pThr212 and pSer396/pSer404 epitopes. The palmitoylated analogs liraglutide and palm11-PrRP31 attenuated tau hyperphosphorylation, suggesting their potential use in the treatment of neurodegenerative diseases.
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Affiliation(s)
| | - Claire Schirmer
- Université Lille, INSERM, CHU Lille, UMR - S 1172 - Jean Pierre Aubert Research Centre, Alzheimer and Tauopathies, Lille, France
| | - Martina Holubová
- Institute of Organic Chemistry and Biochemistry, AS CR, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry, AS CR, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry, AS CR, Prague, Czech Republic.,Institute of Physiology, AS CR, Prague, Czech Republic
| | - Marie-Christine Galas
- Université Lille, INSERM, CHU Lille, UMR - S 1172 - Jean Pierre Aubert Research Centre, Alzheimer and Tauopathies, Lille, France
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry, AS CR, Prague, Czech Republic
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12
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Guisle I, Gratuze M, Petry S, Morin F, Keraudren R, Whittington RA, Hébert SS, Mongrain V, Planel E. Circadian and sleep/wake-dependent variations in tau phosphorylation are driven by temperature. Sleep 2019; 43:5614684. [DOI: 10.1093/sleep/zsz266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/30/2019] [Indexed: 12/27/2022] Open
Abstract
AbstractStudy ObjectivesAggregates of hyperphosphorylated tau protein are a hallmark of Alzheimer’s disease (AD) and other tauopathies. Sleep disturbances are common in AD patients, and insufficient sleep may be a risk factor for AD. Recent evidence suggests that tau phosphorylation is dysregulated by sleep disturbances in mice. However, the physiological regulation of tau phosphorylation during the sleep–wake cycle is currently unknown. We thus aimed to determine whether tau phosphorylation is regulated by circadian rhythms, inherently linked to the sleep–wake cycle.MethodsTo answer these questions, we analyzed by Western blotting tau protein and associated kinases and phosphatases in the brains of awake, sleeping, and sleep-deprived B6 mice. We also recorded their temperature.ResultsWe found that tau phosphorylation undergoes sleep-driven circadian variations as it is hyperphosphorylated during sleep but not during acute sleep deprivation. Moreover, we demonstrate that the mechanism behind these changes involves temperature, as tau phosphorylation was inversely correlated with circadian- and sleep deprivation-induced variations in body temperature, and prevented by housing the animals at a warmer temperature. Notably, similar changes in tau phosphorylation were reproduced in neuronal cells exposed to temperatures recorded during the sleep–wake cycle. Our results also suggest that inhibition of protein phosphatase 2A (PP2A) may explain the hyperphosphorylation of tau during sleep-induced hypothermia.ConclusionTaken together, our results demonstrate that tau phosphorylation follows a circadian rhythm driven mostly by body temperature and sleep, and provide the physiological basis for further understanding how sleep deregulation can affect tau and ultimately AD pathology.
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Affiliation(s)
- Isabelle Guisle
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
| | - Maud Gratuze
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
| | - Séréna Petry
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
| | - Françoise Morin
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, QC, Canada
| | - Rémi Keraudren
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
| | - Robert A Whittington
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, NY
| | - Sébastien S Hébert
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, QC, Canada
| | - Valérie Mongrain
- Research Center and Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Coeur de Montréal (CIUSSS-NIM), Montréal, QC, Canada
- Department of Neuroscience, Université de Montréal, Montréal, QC, Canada
| | - Emmanuel Planel
- Université Laval, Faculté de Médecine, Département de Psychiatrie et Neurosciences, Québec, QC, Canada
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, QC, Canada
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Motzko-Soares ACP, Vizin RCL, Martins TMS, Hungaro ARO, Sato JR, Almeida MC, Carrettiero DC. Thermoregulatory profile of neurodegeneration-induced dementia of the Alzheimer's type using intracerebroventricular streptozotocin in rats. Acta Physiol (Oxf) 2018; 224:e13084. [PMID: 29719119 DOI: 10.1111/apha.13084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/21/2018] [Accepted: 04/24/2018] [Indexed: 01/18/2023]
Abstract
AIM Here, we have extensively investigated the relationship between thermoregulation and neurodegeneration-induced dementia of the Alzheimer's type using intracerebroventricular injections of streptozotocin (icv-STZ). METHODS Male Wistar rats were treated with bilateral injections of icv-STZ, and their thermoregulatory profiles (core body temperature, tail-skin temperature, cold and heat defence responses and thermal place preference) were evaluated. Spatial memory, locomotor activity, social interaction, brain ventricular volume, and Aβ1-42 and tau protein levels in the brain were analysed to characterize the effects of STZ on the brain and behaviour. RESULTS In addition to deficits in spatial memory, reduced social interaction and an increased brain ventricular volume, icv-STZ rats presented a pattern of hyperthermia, as demonstrated by an increased core body temperature. Hyperthermia was due to the activation of both autonomic heat conservation and behavioural cold avoidance, as STZ-treated rats presented tail-cutaneous vasoconstriction and an altered thermal preference. They also showed a distinct cold defence response when exposed to cold. CONCLUSION Our data bring evidence that icv-STZ in rats causes hyperthermia, with activation of both autonomic and behavioural thermoregulatory defence responses when challenged at colder temperatures, leading us to hypothesize that they are more efficient in preventing hypothermia. These data are relevant for a better understanding of neurodegenerative disease mechanisms.
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Affiliation(s)
- A. C. P. Motzko-Soares
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - R. C. L. Vizin
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - T. M. S. Martins
- Undergraduate Program in Science and Technology; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - A. R. O. Hungaro
- Undergraduate Program in Science and Technology; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - J. R. Sato
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
- Center for Mathematics Computation and Cognition (CMCC); Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - M. C. Almeida
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
- Center for Natural and Human Sciences (CCNH); Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
| | - D. C. Carrettiero
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
- Center for Natural and Human Sciences (CCNH); Universidade Federal do ABC (UFABC); São Bernardo do Campo SP Brazil
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Almeida MC, Carrettiero DC. Hypothermia as a risk factor for Alzheimer disease. HANDBOOK OF CLINICAL NEUROLOGY 2018; 157:727-735. [PMID: 30459036 DOI: 10.1016/b978-0-444-64074-1.00044-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Alzheimer disease (AD), which is associated with chronic and progressive neurodegeneration, is the most prevalent cause of dementia linked to aging. Among the risk factors for AD, age stands as the greatest one, with the vast majority of people with AD being 65 years of age or older. Nevertheless, the pathophysiologic mechanisms underlying the link between aging and the development of AD, although not completely understood, might reveal important aspects for the understanding of this pathology. Thus, there is significant evidence that the impaired thermal homeostasis associated with normal aging leads to a variety of metabolic changes that could be associated with AD development. In this chapter, we assess the clinical and biochemical evidence implicating hypothermia as a risk factor for the development of AD and the impact of hypothermia on the two pathologic hallmarks of AD: accumulation of senile plaques of amyloid-beta and neurofibrillary tangles of aberrant hyperphosphorylated tau protein.
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Affiliation(s)
- Maria Camila Almeida
- Natural and Human Sciences Center, Federal University of ABC, São Bernardo do Campo, SP, Brazil.
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Tournissac M, Vandal M, François A, Planel E, Calon F. Old age potentiates cold-induced tau phosphorylation: linking thermoregulatory deficit with Alzheimer's disease. Neurobiol Aging 2016; 50:25-29. [PMID: 27838492 DOI: 10.1016/j.neurobiolaging.2016.09.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 09/09/2016] [Accepted: 09/29/2016] [Indexed: 02/08/2023]
Abstract
Thermoregulatory deficits coincide with a rise in the incidence of Alzheimer's disease (AD) in old age. Lower body temperature increases tau phosphorylation, a neuropathological hallmark of AD. To determine whether old age potentiates cold-induced tau phosphorylation, we compared the effects of cold exposure (4 °C, 24 hours) in 6- and 18-month-old mice. Cold-induced changes in body temperature, brown adipose tissue activity, and phosphorylation of tau at Ser202 were not different between 6- and 18-month-old mice. However, following cold exposure, only old mice displayed a significant rise in soluble tau pThr181 and pThr231, which was correlated with body temperature. Inactivation of glycogen synthase kinase 3β was more prominent in young mice, suggesting a protective mechanism against cold-induced tau phosphorylation. These results suggest that old age confers higher susceptibility to tau hyperphosphorylation following a change in body temperature, thereby contributing to an enhanced risk of developing AD.
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Affiliation(s)
- Marine Tournissac
- Faculté de pharmacie, Université Laval, Québec, Québec, Canada; Axe Neurosciences, Centre de recherche du centre Hospitalier de l'Université Laval (CHUL), Québec, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels, Québec, Québec, Canada
| | - Milène Vandal
- Faculté de pharmacie, Université Laval, Québec, Québec, Canada; Axe Neurosciences, Centre de recherche du centre Hospitalier de l'Université Laval (CHUL), Québec, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels, Québec, Québec, Canada
| | - Arnaud François
- Faculté de pharmacie, Université Laval, Québec, Québec, Canada; Axe Neurosciences, Centre de recherche du centre Hospitalier de l'Université Laval (CHUL), Québec, Québec, Canada
| | - Emmanuel Planel
- Axe Neurosciences, Centre de recherche du centre Hospitalier de l'Université Laval (CHUL), Québec, Québec, Canada; Faculté de médecine, Département de psychiatrie et de neurosciences, Université Laval, Québec, Québec, Canada
| | - Frédéric Calon
- Faculté de pharmacie, Université Laval, Québec, Québec, Canada; Axe Neurosciences, Centre de recherche du centre Hospitalier de l'Université Laval (CHUL), Québec, Québec, Canada; Institut sur la Nutrition et les Aliments Fonctionnels, Québec, Québec, Canada.
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Huang C, Ng OTW, Ho YS, Irwin MG, Chang RCC, Wong GTC. Effect of Continuous Propofol Infusion in Rat on Tau Phosphorylation with or without Temperature Control. J Alzheimers Dis 2016; 51:213-26. [PMID: 26836157 DOI: 10.3233/jad-150645] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Several studies suggest a relationship between anesthesia-induced tau hyperphosphorylation and the development of postoperative cognitive dysfunction. This study further characterized the effects of continuous propofol infusion on tau protein phosphorylation in rats, with or without temperature control. Propofol was administered intravenously to 8-10-week-old male Sprague-Dawley rats and infused to the loss of the righting reflex for 2 h continuously. Proteins from cortex and hippocampus were examined by western blot and immunohistochemistry. Rectal temperature was significantly decreased during propofol infusion. Propofol with hypothermia significantly increased phosphorylation of tau at AT8, AT180, Thr205, and Ser199 in cortex and hippocampus except Ser396. With temperature maintenance, propofol still induced significant elevation of AT8, Thr205, and Ser199 in cortex and hippocampus; however, increase of AT180 and Ser396 was only found in hippocampus and cortex, respectively. Differential effects of propofol with or without hypothermia on multiple tau related kinases, such as Akt/GSK3β, MAPK pathways, or phosphatase (PP2A), were demonstrated in region-specific manner. These findings indicated that propofol increased tau phosphorylation under both normothermic and hypothermic conditions, and temperature control could partially attenuate the hyperphosphorylation of tau. Further studies are warranted to determine the long-term impact of propofol on the tau pathology and cognitive functions.
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Affiliation(s)
- Chunxia Huang
- Department of Anaesthesiology, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Olivia Tsz-Wa Ng
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Yuen-Shan Ho
- School of Nursing, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Michael Garnet Irwin
- Department of Anaesthesiology, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Raymond Chuen-Chung Chang
- Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Gordon Tin-Chun Wong
- Department of Anaesthesiology, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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Tsai LK, Chen CL, Tsai YC, Ting CH, Chien YH, Lee NC, Hwu WL. Hypothermia improves disease manifestations in SMA mice via SMN augmentation. Hum Mol Genet 2015; 25:631-41. [PMID: 26647309 DOI: 10.1093/hmg/ddv500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 12/01/2015] [Indexed: 11/13/2022] Open
Abstract
Spinal muscular atrophy (SMA) is a progressive motor neuron disease caused by a deficiency of survival motor neuron (SMN) protein. In this study, we evaluated the efficacy of intermittent transient hypothermia in a mouse model of SMA. SMA mice were exposed to ice for 50 s to achieve transient hypothermia (below 25°C) daily beginning on postnatal day 1. Neonatal SMA mice (Smn(-/-)SMN2(+/-)) who received daily transient hypothermia exhibited reduced motor neuron degeneration and muscle atrophy and preserved the architecture of neuromuscular junction when compared with untreated controls at day 8 post-treatment. Daily hypothermia also prolonged the lifespan, increased body weight and improved motor coordination in SMA mice. Quantitative polymerase chain reaction and western blot analyses showed that transient hypothermia led to an increase in SMN transcript and protein levels in the spinal cord and brain. In in vitro studies using an SMN knockdown motor neuron-like cell-line, transient hypothermia increased intracellular SMN protein expression and length of neurites, confirming the direct effect of hypothermia on motor neurons. These data indicate that the efficacy of intermittent transient hypothermia in improving outcome in an SMA mouse model may be mediated, in part, via an upregulation of SMN levels in the motor neurons.
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Affiliation(s)
- Li-Kai Tsai
- Department of Neurology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan,
| | - Chien-Lin Chen
- Department of Neurology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Yi-Chieh Tsai
- Department of Neurology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei 100, Taiwan
| | - Chen-Hung Ting
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10 Dahuen Road, Jiaushi, Ilan 262, Taiwan and
| | - Yin-Hsio Chien
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Ni-Chong Lee
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Wuh-Liang Hwu
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 100, Taiwan
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18
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Carrettiero DC, Santiago FE, Motzko-Soares ACP, Almeida MC. Temperature and toxic Tau in Alzheimer's disease: new insights. Temperature (Austin) 2015; 2:491-8. [PMID: 27227069 PMCID: PMC4843920 DOI: 10.1080/23328940.2015.1096438] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/15/2015] [Accepted: 09/15/2015] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's disease (AD), the most common dementia in the elderly, is characterized by cognitive impairment and severe autonomic symptoms such as disturbance in core body temperature (Tc), which may be predictors or early events in AD onset. Inclusions of phosphorylated Tau (p-Tau) are a hallmark of AD and other neurodegenerative disorders called “Tauopathies.” Animal and human studies show that anesthesia augments p-Tau levels through reduction of Tc, with implications for AD. Additionally, hypothermia impairs memory and cognitive function. The molecular networks related to Tc that are associated with AD remain poorly characterized. Under physiological conditions, Tau binds microtubules, promoting their assembly and stability. The dynamically regulated Tau-microtubule interaction plays an important role in structural remodeling of the cytoskeleton, having important functions in neuronal plasticity and memory in the hippocampus. Hypothermia-induced increases in p-Tau levels are significant, with an 80% increase for each degree Celsius below normothermic conditions. Although the effects of temperature on Tau phosphorylation are evident, its effects on p-Tau degradation remain poorly understoodWe review information concerning the mechanisms of Tau regulation of neuron plasticity via its effects on microtubule dynamics, with focus on pathways regulating the abundance of phosphorylated Tau species. We highlight the effects of temperature on molecular mechanisms influencing the development of Tau-related diseases. Specifically, we argue that cold might preferentially affects central nervous system structures that are highly reliant upon plasticity, such as the hippocampus, and that the effect of cold on Tau phosphorylation may constitute a pathology-initiating trigger leading to neurodegeneration.
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Affiliation(s)
- Daniel Carneiro Carrettiero
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC; São Bernardo do Campo, Brasil; Center for Natural Sciences and Humanities; Universidade Federal do ABC; São Bernardo do Campo, Brasil
| | - Fernando Enrique Santiago
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC; São Bernardo do Campo , Brasil
| | | | - Maria Camila Almeida
- Graduate Program in Neuroscience and Cognition; Universidade Federal do ABC; São Bernardo do Campo, Brasil; Center for Natural Sciences and Humanities; Universidade Federal do ABC; São Bernardo do Campo, Brasil
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19
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de Paula CAD, Santiago FE, de Oliveira ASA, Oliveira FA, Almeida MC, Carrettiero DC. The Co-chaperone BAG2 Mediates Cold-Induced Accumulation of Phosphorylated Tau in SH-SY5Y Cells. Cell Mol Neurobiol 2015. [DOI: 10.1007/s10571-015-0239-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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20
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Ahmadian-Attari MM, Dargahi L, Mosaddegh M, Kamalinejad M, Khallaghi B, Noorbala F, Ahmadiani A. Impairment of Rat Spatial Learning and Memory in a New Model of Cold Water-Induced Chronic Hypothermia: Implication for Alzheimer’s Disease. Neurotox Res 2015; 28:95-107. [DOI: 10.1007/s12640-015-9525-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 01/31/2015] [Accepted: 02/23/2015] [Indexed: 10/23/2022]
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21
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Wainaina MN, Chen Z, Zhong C. Environmental factors in the development and progression of late-onset Alzheimer's disease. Neurosci Bull 2014; 30:253-70. [PMID: 24664867 PMCID: PMC5562669 DOI: 10.1007/s12264-013-1425-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 01/23/2014] [Indexed: 01/08/2023] Open
Abstract
Late-onset Alzheimer's disease (LOAD) is an age-related neurodegenerative disorder characterized by gradual loss of synapses and neurons, but its pathogenesis remains to be clarified. Neurons live in an environment constituted by neurons themselves and glial cells. In this review, we propose that the neuronal degeneration in the AD brain is partially caused by diverse environmental factors. We first discuss various environmental stresses and the corresponding responses at different levels. Then we propose some mechanisms underlying the specific pathological changes, in particular, hypothalamic-pituitary adrenal axis dysfunction at the systemic level; cerebrovascular dysfunction, metal toxicity, glial activation, and Aβ toxicity at the intercellular level; and kinase-phosphatase imbalance and epigenetic modification at the intracellular level. Finally, we discuss the possibility of developing new strategies for the prevention and treatment of LOAD from the perspective of environmental stress. We conclude that environmental factors play a significant role in the development of LOAD through multiple pathological mechanisms.
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Affiliation(s)
- Moses N. Wainaina
- Department of Neurology, Zhongshan Hospital; State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200032 China
- Pwani University, Kilifi, Kenya
| | - Zhichun Chen
- Department of Neurology, Zhongshan Hospital; State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200032 China
| | - Chunjiu Zhong
- Department of Neurology, Zhongshan Hospital; State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200032 China
- Institutes of Brain Science, Fudan University, Shanghai, 200032 China
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22
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Whittington RA, Bretteville A, Dickler MF, Planel E. Anesthesia and tau pathology. Prog Neuropsychopharmacol Biol Psychiatry 2013; 47:147-55. [PMID: 23535147 PMCID: PMC3741335 DOI: 10.1016/j.pnpbp.2013.03.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/15/2013] [Accepted: 03/15/2013] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia and remains a growing worldwide health problem. As life expectancy continues to increase, the number of AD patients presenting for surgery and anesthesia will steadily rise. The etiology of sporadic AD is thought to be multifactorial, with environmental, biological and genetic factors interacting together to influence AD pathogenesis. Recent reports suggest that general anesthetics may be such a factor and may contribute to the development and exacerbation of this neurodegenerative disorder. Intra-neuronal neurofibrillary tangles (NFT), composed of hyperphosphorylated and aggregated tau protein are one of the main neuropathological hallmarks of AD. Tau pathology is important in AD as it correlates very well with cognitive dysfunction. Lately, several studies have begun to elucidate the mechanisms by which anesthetic exposure might affect the phosphorylation, aggregation and function of this microtubule-associated protein. Here, we specifically review the literature detailing the impact of anesthetic administration on aberrant tau hyperphosphorylation as well as the subsequent development of neurofibrillary pathology and degeneration.
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Affiliation(s)
- Robert A. Whittington
- Department of Anesthesiology, Columbia University, New York, NY 10032,Corresponding Author: Robert A. Whittington, MD, Columbia University, College of Physicians and Surgeons, Department of Anesthesiology, 622 West 168th Street PH 5, New York, NY 10032, Tel: 212-305-1567, Fax: 212-305-0777,
| | - Alexis Bretteville
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec (QC), Canada, G1V 4G2
| | - Maya F. Dickler
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec (QC), Canada, G1V 4G2
| | - Emmanuel Planel
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec (QC), Canada, G1V 4G2,Université Laval, Département de Psychiatrie et Neurosciences, Québec (QC), Canada, G1V 0A6
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Yan H, Xu T, Zhao H, Lee KC, Wang HY, Zhang Y. Isoflurane increases neuronal cell death vulnerability by downregulating miR-214. PLoS One 2013; 8:e55276. [PMID: 23408966 PMCID: PMC3568119 DOI: 10.1371/journal.pone.0055276] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 12/30/2012] [Indexed: 01/05/2023] Open
Abstract
Since accumulating evidence suggests the application of anesthetics may increase the risk of Alzheimer’s disease (AD), we investigated the cytotoxicity of inhaled general anesthesia in neurons and its underlying mechanism. Using primary cultured rat hippocampal neurons as the study model, here we show that isoflurane increases vulnerability to intracellular or extracellular amyloid β with or without serum deprivation. This isoflurane-induced effect is mediated by the downregulation of miR-214 level that lead to an elevated expression of Bax, a prominent target for miR-214. We conclude that isoflurane increases cell death in the presence of amyloid β by increasing Bax level through downregulating miR-214. Our data provide a new insight for inhaled anesthetics toxicity and indicate a possible mechanistic link between anesthetic application and neurodegenration in AD.
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Affiliation(s)
- Hailiang Yan
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, China
- Department of Urology, Peking University People’s Hospital, Beijing, China
| | - Tao Xu
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, China
- Department of Urology, Peking University People’s Hospital, Beijing, China
| | | | - Kuo-Chieh Lee
- Department of Pharmacology, Physiology and Neuroscience, Sophie Davis School of Biomedical Education/City University of New York Medical School, New York, New York, United States of America
| | - Hoau-Yan Wang
- Department of Pharmacology, Physiology and Neuroscience, Sophie Davis School of Biomedical Education/City University of New York Medical School, New York, New York, United States of America
| | - Yan Zhang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, China
- Department of Urology, Peking University People’s Hospital, Beijing, China
- * E-mail:
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Julien C, Marcouiller F, Bretteville A, El Khoury NB, Baillargeon J, Hébert SS, Planel E. Dimethyl sulfoxide induces both direct and indirect tau hyperphosphorylation. PLoS One 2012; 7:e40020. [PMID: 22768202 PMCID: PMC3386937 DOI: 10.1371/journal.pone.0040020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 05/30/2012] [Indexed: 01/14/2023] Open
Abstract
Dimethyl sulfoxide (DMSO) is widely used as a solvent or vehicle for biological studies, and for treatment of specific disorders, including traumatic brain injury and several forms of amyloidosis. As Alzheimer’s disease (AD) brains are characterized by deposits of β-amyloid peptides, it has been suggested that DMSO could be used as a treatment for this devastating disease. AD brains are also characterized by aggregates of hyperphosphorylated tau protein, but the effect of DMSO on tau phosphorylation is unknown. We thus investigated the impact of DMSO on tau phosphorylation in vitro and in vivo. One hour following intraperitoneal administration of 1 or 2 ml/kg DMSO in mice, no change was observed in tau phosphorylation. However, at 4 ml/kg, tau was hyperphosphorylated at AT8 (Ser202/Thr205), PHF-1 (Ser396/Ser404) and AT180 (Thr231) epitopes. At this dose, we also noticed that the animals were hypothermic. When the mice were maintained normothermic, the effect of 4 ml/kg DMSO on tau hyperphosphorylation was prevented. On the other hand, in SH-SY5Y cells, 0.1% DMSO induced tau hyperphosphorylation at AT8 and AT180 phosphoepitopes in normothermic conditions. Globally, these findings demonstrate that DMSO can induce tau hyperphosphorylation indirectly via hypothermia in vivo, and directly in vitro. These data should caution researchers working with DMSO as it can induce artifactual results both in vivo and in vitro.
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Affiliation(s)
- Carl Julien
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
- * E-mail: (CJ); (EP)
| | - François Marcouiller
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
| | - Alexis Bretteville
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
| | - Noura B. El Khoury
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
| | - Joanie Baillargeon
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
| | - Sébastien S. Hébert
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
| | - Emmanuel Planel
- Département de Neurosciences et Psychiatrie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
- Axe Neurosciences, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Québec, Québec, Canada
- * E-mail: (CJ); (EP)
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Hypothermia-induced hyperphosphorylation: a new model to study tau kinase inhibitors. Sci Rep 2012; 2:480. [PMID: 22761989 PMCID: PMC3386519 DOI: 10.1038/srep00480] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 06/13/2012] [Indexed: 12/22/2022] Open
Abstract
Tau hyperphosphorylation is one hallmark of Alzheimer's disease (AD) pathology. Pharmaceutical companies have thus developed kinase inhibitors aiming to reduce tau hyperphosphorylation. One obstacle in screening for tau kinase inhibitors is the low phosphorylation levels of AD-related phospho-epitopes in normal adult mice and cultured cells. We have shown that hypothermia induces tau hyperphosphorylation in vitro and in vivo. Here, we hypothesized that hypothermia could be used to assess tau kinase inhibitors efficacy. Hypothermia applied to models of biological gradual complexity such as neuronal-like cells, ex vivo brain slices and adult non-transgenic mice leads to tau hyperphosphorylation at multiple AD-related phospho-epitopes. We show that Glycogen Synthase Kinase-3 inhibitors LiCl and AR-A014418, as well as roscovitine, a cyclin-dependent kinase 5 inhibitor, decrease hypothermia-induced tau hyperphosphorylation, leading to different tau phosphorylation profiles. Therefore, we propose hypothermia-induced hyperphosphorylation as a reliable, fast, convenient and inexpensive tool to screen for tau kinase inhibitors.
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MicroRNAs and the Regulation of Tau Metabolism. Int J Alzheimers Dis 2012; 2012:406561. [PMID: 22720189 PMCID: PMC3374946 DOI: 10.1155/2012/406561] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Accepted: 04/19/2012] [Indexed: 11/17/2022] Open
Abstract
Abnormal regulation of tau phosphorylation and/or alternative splicing is associated with the development of a large (>20) group of neurodegenerative disorders collectively known as tauopathies, the most common being Alzheimer's disease. Despite intensive research, little is known about the molecular mechanisms that participate in the transcriptional and posttranscriptional regulation of endogenous tau, especially in neurons. Recently, we showed that mice lacking Dicer in the forebrain displayed progressive neurodegeneration accompanied by disease-like changes in tau phosphorylation and splicing. Dicer is a key enzyme in the biogenesis of microRNAs (miRNAs), small noncoding RNAs that function as part of the RNA-induced silencing complex (RISC) to repress gene expression at the posttranscriptional level. We identified miR-16 and miR-132 as putative endogenous modulators of neuronal tau phosphorylation and tau exon 10 splicing, respectively. Interestingly, these miRNAs have been implicated in cell survival and function, whereas changes in miR-16/132 levels correlate with tau pathology in human neurodegenerative disorders. Thus, understanding how miRNA networks influence tau metabolism and possibly other biological systems might provide important clues into the molecular causes of tauopathies, particularly the more common but less understood sporadic forms.
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Papon MA, Whittington RA, El-Khoury NB, Planel E. Alzheimer's disease and anesthesia. Front Neurosci 2011; 4:272. [PMID: 21344011 PMCID: PMC3034231 DOI: 10.3389/fnins.2010.00272] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 12/24/2010] [Indexed: 12/19/2022] Open
Abstract
Cognitive disorders such as postoperative cognitive dysfunction, confusion, and delirium, are common following anesthesia in the elderly, with symptoms persisting for months or years in some patients. Alzheimer's disease (AD) patients appear to be particularly at risk of cognitive deterioration following anesthesia, and some studies suggest that exposure to anesthetics may increase the risk of AD. Here, we review the literature linking anesthesia to AD, with a focus on the biochemical consequences of anesthetic exposure on AD pathogenic pathways.
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Affiliation(s)
- Marie-Amélie Papon
- Département de Psychiatrie et Neurosciences, Centre Hospitalier de l'Université Laval Québec, QC, Canada
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