Journal ArticleGeroScience · October 2024
Inflammaging, a state of chronic, progressive low-grade inflammation during aging, is associated with several adverse clinical outcomes, including frailty, disability, and death. Chronic inflammation is a hallmark of aging and is linked to the pathogenesis ...
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Journal ArticleAnesthesiol Clin · September 2024
Preoperative review of existing advance directives and a discussion of patient goals should be routinely done to address any potential limitations on resuscitative therapies during perioperative care. Both surgeons and anesthesiologists should be collabora ...
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ConferenceAnesthesiology · May 1, 2024
BACKGROUND: Anesthesia and/or surgery accelerate Alzheimer's disease pathology and cause memory deficits in animal models, yet there is a lack of prospective data comparing cerebrospinal fluid (CSF) Alzheimer's disease-related biomarker and cognitive traje ...
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Journal ArticleBr J Anaesth · January 2024
BACKGROUND: In the eyes-closed, awake condition, EEG oscillatory power in the alpha band (7-13 Hz) dominates human spectral activity. With eyes open, however, EEG alpha power substantially decreases. Less alpha attenuation with eyes opening has been associ ...
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Journal ArticleAnn Neurol · December 2023
OBJECTIVE: Although animal models suggest a role for blood-brain barrier dysfunction in postoperative delirium-like behavior, its role in postoperative delirium and postoperative recovery in humans is unclear. Thus, we evaluated the role of blood-brain bar ...
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Journal ArticleBr J Anaesth · August 2023
BACKGROUND: Animal studies have shown that isoflurane and propofol have differential effects on Alzheimer's disease (AD) pathology and memory, although it is unclear whether this occurs in humans. METHODS: This was a nested randomised controlled trial with ...
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Journal ArticleBr J Anaesth · August 2023
Postoperative delirium is a particularly debilitating complication of surgery and perioperative care. Although the aetiology of postoperative delirium is not entirely understood, recent evidence suggests that Alzheimer's disease and related dementias patho ...
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Journal ArticlemedRxiv · May 10, 2023
OBJECTIVE: Although animal models suggest a role for blood-brain barrier dysfunction in postoperative delirium-like behavior, its role in postoperative delirium and postoperative recovery in humans is unclear. Thus, we evaluated the role of blood-brain bar ...
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Journal ArticleBrain Behav Immun Health · December 2022
Delirium is a common postoperative neurologic complication among older adults. Despite its prevalence (14%-50%) and likely association with inflammation, the exact mechanisms that underpin postoperative delirium are unclear. This project aimed to character ...
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Journal ArticleCan J Anaesth · October 2022
PURPOSE: This narrative review examines the current evidence on whether obstructive sleep apnea (OSA) is associated with postoperative delirium (POD) and postoperative cognitive dysfunction (POCD). The mechanisms that could predispose OSA patients to these ...
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Journal ArticleAnn Clin Transl Neurol · February 2022
OBJECTIVE: Numerous investigators have theorized that postoperative changes in Alzheimer's disease neuropathology may underlie postoperative neurocognitive disorders. Thus, we determined the relationship between postoperative changes in cognition and cereb ...
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Journal ArticleJ Geriatr Psychiatry Neurol · January 2022
OBJECTIVE: To determine the relationship between affective measures and cognition before and after non-cardiac surgery in older adults. METHODS: Observational prospective cohort study in 103 surgical patients age ≥ 60 years old. All participants underwent ...
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Journal ArticleAm J Med · January 2022
This review summarizes best practices for the perioperative care of older adults as recommended by the American Geriatrics Society, American Society of Anesthesiologists, and American College of Surgeons, with practical implementation strategies that can b ...
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Journal ArticleGeroScience · October 2024
Inflammaging, a state of chronic, progressive low-grade inflammation during aging, is associated with several adverse clinical outcomes, including frailty, disability, and death. Chronic inflammation is a hallmark of aging and is linked to the pathogenesis ...
Full textCite
Journal ArticleAnesthesiol Clin · September 2024
Preoperative review of existing advance directives and a discussion of patient goals should be routinely done to address any potential limitations on resuscitative therapies during perioperative care. Both surgeons and anesthesiologists should be collabora ...
Full textLink to itemCite
ConferenceAnesthesiology · May 1, 2024
BACKGROUND: Anesthesia and/or surgery accelerate Alzheimer's disease pathology and cause memory deficits in animal models, yet there is a lack of prospective data comparing cerebrospinal fluid (CSF) Alzheimer's disease-related biomarker and cognitive traje ...
Full textLink to itemCite
Journal ArticleBr J Anaesth · January 2024
BACKGROUND: In the eyes-closed, awake condition, EEG oscillatory power in the alpha band (7-13 Hz) dominates human spectral activity. With eyes open, however, EEG alpha power substantially decreases. Less alpha attenuation with eyes opening has been associ ...
Full textLink to itemCite
Journal ArticleAnn Neurol · December 2023
OBJECTIVE: Although animal models suggest a role for blood-brain barrier dysfunction in postoperative delirium-like behavior, its role in postoperative delirium and postoperative recovery in humans is unclear. Thus, we evaluated the role of blood-brain bar ...
Full textLink to itemCite
Journal ArticleBr J Anaesth · August 2023
BACKGROUND: Animal studies have shown that isoflurane and propofol have differential effects on Alzheimer's disease (AD) pathology and memory, although it is unclear whether this occurs in humans. METHODS: This was a nested randomised controlled trial with ...
Full textLink to itemCite
Journal ArticleBr J Anaesth · August 2023
Postoperative delirium is a particularly debilitating complication of surgery and perioperative care. Although the aetiology of postoperative delirium is not entirely understood, recent evidence suggests that Alzheimer's disease and related dementias patho ...
Full textLink to itemCite
Journal ArticlemedRxiv · May 10, 2023
OBJECTIVE: Although animal models suggest a role for blood-brain barrier dysfunction in postoperative delirium-like behavior, its role in postoperative delirium and postoperative recovery in humans is unclear. Thus, we evaluated the role of blood-brain bar ...
Full textLink to itemCite
Journal ArticleBrain Behav Immun Health · December 2022
Delirium is a common postoperative neurologic complication among older adults. Despite its prevalence (14%-50%) and likely association with inflammation, the exact mechanisms that underpin postoperative delirium are unclear. This project aimed to character ...
Full textLink to itemCite
Journal ArticleCan J Anaesth · October 2022
PURPOSE: This narrative review examines the current evidence on whether obstructive sleep apnea (OSA) is associated with postoperative delirium (POD) and postoperative cognitive dysfunction (POCD). The mechanisms that could predispose OSA patients to these ...
Full textOpen AccessLink to itemCite
Journal ArticleAnn Clin Transl Neurol · February 2022
OBJECTIVE: Numerous investigators have theorized that postoperative changes in Alzheimer's disease neuropathology may underlie postoperative neurocognitive disorders. Thus, we determined the relationship between postoperative changes in cognition and cereb ...
Full textOpen AccessLink to itemCite
Journal ArticleJ Geriatr Psychiatry Neurol · January 2022
OBJECTIVE: To determine the relationship between affective measures and cognition before and after non-cardiac surgery in older adults. METHODS: Observational prospective cohort study in 103 surgical patients age ≥ 60 years old. All participants underwent ...
Full textLink to itemCite
Journal ArticleAm J Med · January 2022
This review summarizes best practices for the perioperative care of older adults as recommended by the American Geriatrics Society, American Society of Anesthesiologists, and American College of Surgeons, with practical implementation strategies that can b ...
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Journal ArticleBr J Anaesth · December 2021
BACKGROUND: Cognitive dysfunction after surgery is a major issue in older adults. Here, we determined the effect of APOE4 on perioperative neurocognitive function in older patients. METHODS: We enrolled 140 English-speaking patients ≥60 yr old scheduled fo ...
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Journal ArticleSci Rep · February 4, 2021
Arachidonic acid (AA), docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA) derived lipids play key roles in initiating and resolving inflammation. Neuro-inflammation is thought to play a causal role in perioperative neurocognitive disorders, yet th ...
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Journal ArticleJ Alzheimers Dis · 2021
BACKGROUND: APOE4 has been hypothesized to increase Alzheimer's disease risk by increasing neuroinflammation, though the specific neuroinflammatory pathways involved are unclear. OBJECTIVE: Characterize cerebrospinal fluid (CSF) proteomic changes related t ...
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Journal ArticleJ Alzheimers Dis · 2021
BACKGROUND: Postoperative cognitive dysfunction (POCD), a syndrome of cognitive deficits occurring 1-12 months after surgery primarily in older patients, is associated with poor postoperative outcomes. POCD is hypothesized to result from neuroinflammation; ...
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Journal ArticleFront Syst Neurosci · 2021
Physiologic signals such as the electroencephalogram (EEG) demonstrate irregular behaviors due to the interaction of multiple control processes operating over different time scales. The complexity of this behavior can be quantified using multi-scale entrop ...
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Journal ArticleJ Neurol · July 2020
OBJECTIVE: Lumbar punctures (LPs) are important for obtaining CSF in neurology studies but are associated with adverse events and feared by many patients. We determined adverse event rates and pain scores in patients prospectively enrolled in two cohort st ...
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Journal ArticleJ Alzheimers Dis · 2020
BACKGROUND: Perioperative neurocognitive disorders (PND) are common complications in older adults associated with increased 1-year mortality and long-term cognitive decline. One risk factor for worsened long-term postoperative cognitive trajectory is the A ...
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Journal ArticleAnesth Analg · November 2019
Animal models suggest postoperative cognitive dysfunction may be caused by brain monocyte influx. To study this in humans, we developed a flow cytometry panel to profile cerebrospinal fluid (CSF) samples collected before and after major noncardiac surgery ...
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Journal ArticleJ Am Geriatr Soc · April 2019
BACKGROUND/OBJECTIVES: Every year, up to 40% of the more than 16 million older Americans who undergo anesthesia/surgery develop postoperative cognitive dysfunction (POCD) or delirium. Each of these distinct syndromes is associated with decreased quality of ...
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Journal ArticleRespir Physiol Neurobiol · October 2018
The protein kinase C family regulates many cellular functions, including multiple forms of neuroplasticity. The novel PKCθ and atypical PKCζ isoforms have been implicated in distinct forms of spinal, respiratory motor plasticity, including phrenic motor fa ...
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Journal ArticleRespir Physiol Neurobiol · October 2018
Phrenic long-term facilitation (pLTF) is a form of serotonin-dependent respiratory motor plasticity induced by moderate acute intermittent hypoxia (AIH), but not by moderate acute sustained hypoxia (ASH) of similar cumulative duration. Thus, moderate AIH-i ...
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Journal ArticleExp Neurol · January 2017
Phrenic long-term facilitation (pLTF) is a form of hypoxia-induced spinal respiratory motor plasticity that requires new synthesis of brain derived neurotrophic factor (BDNF) and activation of its high-affinity receptor, tropomyosin receptor kinase B (TrkB ...
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Journal ArticleJ Neurosci · July 27, 2016
UNLABELLED: Acute intermittent hypoxia (AIH) induces phrenic long-term facilitation (pLTF), a form of spinal motor plasticity. Competing mechanisms give rise to phrenic motor facilitation (pMF; a general term including pLTF) depending on the severity of hy ...
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Journal ArticleJ Neurosci · May 27, 2015
Acute intermittent hypoxia (AIH) induces a form of spinal motor plasticity known as phrenic long-term facilitation (pLTF); pLTF is a prolonged increase in phrenic motor output after AIH has ended. In anesthetized rats, we demonstrate that pLTF requires act ...
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Journal ArticleAnn N Y Acad Sci · March 2013
As in other neural systems, plasticity is a hallmark of the neural system controlling breathing. One spinal mechanism of respiratory plasticity is phrenic long-term facilitation (pLTF) following acute intermittent hypoxia. Although cellular mechanisms givi ...
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Journal ArticleCell Calcium · May 2009
Intracellular Zn(2+) toxicity is associated with mitochondrial dysfunction. Zn(2+) depolarizes mitochondria in assays using isolated organelles as well as cultured cells. Some reports suggest that Zn(2+)-induced depolarization results from the opening of t ...
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Journal ArticleAnal Biochem · January 1, 2009
Zinc-sensitive fluorescent probes have become increasingly important in the investigation of the cellular roles of zinc. There is, however, little information on how the other transition metals in cells may influence the measurement of zinc. We have charac ...
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Journal ArticleJ Neurochem · September 2008
Liberation of zinc from intracellular stores contributes to oxidant-induced neuronal injury. However, little is known regarding how endogenous oxidant systems regulate intracellular free zinc ([Zn(2+)](i)). Here we simultaneously imaged [Ca(2+)](i) and [Zn ...
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Journal ArticleCell Calcium · March 2005
Elevation of intracellular free zinc ([Zn2+]i) probably contributes to cell death in injury paradigms involving calcium deregulation and oxidative stress such as glutamate excitotoxicity. However, it is difficult to monitor both ions simultaneously in live ...
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