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https://www.readbyqxmd.com/read/27913743/effect-of-dexmedetomidine-on-postoperative-cognitive-dysfunction-in-elderly-patients-after-general-anaesthesia-a-meta-analysis
#1
Chengmao Zhou, Yu Zhu, Zhen Liu, Lin Ruan
OBJECTIVE: We undertook a meta-analysis to investigate the effect of dexmedetomidine on postoperative cognitive dysfunction (POCD). METHODS: We searched PubMed, EMBASE, the Cochrane Library, CNKI and Google Scholar to find randomized controlled trials (RCTs) of the influence of dexmedetomidine on POCD in elderly adults who had undergone general anaesthesia. Two researchers independently screened the literature, extracted data, and evaluated methodologic quality against inclusion and exclusion criteria...
December 2, 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/27909728/calcineurin-nuclear-factor-%C3%AE%C2%BAb-signaling-mediates-isoflurane-induced-hippocampal-neuroinflammation-and-subsequent-cognitive-impairment-in-aged-rats
#2
Zhengqian Li, Cheng Ni, Chun Xia, Joey Jaw, Yujie Wang, Yiyun Cao, Mao Xu, Xiangyang Guo
It is known that inhaled anesthetics induce neuroinflammation and facilitate postoperative cognitive dysfunction (POCD) in aged individuals; however, the mechanisms by which they mediate these effects remain elusive. Inhalation of the isoflurane anesthetic leads to opening of the mitochondrial permeability transition pore and loss of mitochondrial membrane potential. Therefore, mitochondrial retrograde signaling, which is an adaptive mechanism that facilitates the transmission of signals from dysfunctional mitochondria to the nucleus to activate target gene expression, may be activated during isoflurane inhalation...
November 24, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27884107/association-between-changes-in-cerebral-grey-matter-volume-and-postoperative-cognitive-dysfunction-in-elderly-patients-study-protocol-for-a-prospective-observational-cohort-study
#3
Nicolai Goettel, Panagiota Mistridis, Manfred Berres, Julia Reinhardt, Christoph Stippich, Andreas U Monsch, Luzius A Steiner
BACKGROUND: Cognitive decline is frequently observed in elderly patients after major surgery. The pathophysiology of postoperative cognitive dysfunction (POCD) remains unclear. The aim of our investigation is to identify potential associations between brain volume change and POCD in elderly patients undergoing major surgery. METHODS: This is a prospective observational cohort study approved by the regional ethics board. We intend to compare specific brain volumes (hippocampus, lateral ventricle, total grey matter volume, regional cortical thickness) on magnetic resonance imaging and cognitive functions determined by a neuropsychological assessment battery in 70 study participants aged ≥65 years before and 3 and 12 months after major noncardiac surgery...
November 25, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27872469/preoperative-serum-microrna-155-expression-independently-predicts-postoperative-cognitive-dysfunction-after-laparoscopic-surgery-for-colon-cancer
#4
Chaoshuang Wu, Ruichun Wang, Xiaoyu Li, Junping Chen
BACKGROUND The aim of this study was to examine the association between serum expression of miRNA-155 and postoperative cognitive dysfunction (POCD) after laparoscopic surgery for colon cancer. MATERIAL AND METHODS We enrolled 110 patients scheduled to undergo colon tumor resection via laparotomy in Ningbo No. 2 Hospital from July 2013 to November 2015. The blood samples were collected from the participants 1 day before surgery. Multiple logistic regression analysis was used for the analysis of independent predictive biomarkers for POCD...
November 22, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27871564/effect-of-remifentanil-and-fentanyl-on-postoperative-cognitive-function-and-cytokines-level-in-elderly-patients-undergoing-major-abdominal-surgery
#5
Germano De Cosmo, Flaminio Sessa, Federico Fiorini, Elisabetta Congedo
PURPOSE: Postoperative cognitive dysfunction is a frequent complication occurring in geriatric patients. Type of anesthesia and the patient's inflammatory response may contribute to postoperative cognitive dysfunction (POCD). In this prospective randomized double-blinded controlled study we hypothesized that intraoperative remifentanil may reduce immediate and early POCD compared to fentanyl and evaluated if there is a correlation between cognitive status and postoperative inflammatory cytokines level...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27865916/neutrophil-gelatinase-associated-lipocalin-and-microglial-activity-are-associated-with-distinct-postoperative-behavioral-changes-in-rats
#6
Leonie Gouweleeuw, Iris B Hovens, Barbara L van Leeuwen, Regien G Schoemaker
Neutrophil gelatinase-associated lipocalin (NGAL) has recently gained interest as a marker for neuroinflammation and associated behavioral dysfunction. We aimed to explore the link between NGAL and behavior in a rat model of postoperative cognitive dysfunction (POCD). Material collected in two previous studies on POCD was analyzed and associated with outcomes for exploratory behavior and spatial learning. Plasma and hippocampal NGAL and microglial activity were analyzed. Pearson's correlations and backward linear regression were performed to study the associations between behavioral parameters, NGAL concentrations, and microglial activity...
November 16, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27858963/resting-state-functional-connectivity-and-cognition-after-major-cardiac-surgery-in-older-adults-without-preoperative-cognitive-impairment-preliminary-findings
#7
Jeffrey N Browndyke, Miles Berger, Todd B Harshbarger, Patrick J Smith, William White, Tiffany L Bisanar, John H Alexander, Jeffrey G Gaca, Kathleen Welsh-Bohmer, Mark F Newman, Joseph P Mathew
OBJECTIVES: To look for changes in intrinsic functional brain connectivity associated with postoperative changes in cognition, a common complication in seniors undergoing major surgery, using resting-state functional magnetic resonance imaging. DESIGN: Objective cognitive testing and functional brain imaging were prospectively performed at preoperative baseline and 6 weeks after surgery and at the same time intervals in nonsurgical controls. SETTING: Academic medical center...
November 17, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27855371/cerebral-mast-cells-participate-in-postoperative-cognitive-dysfunction-by-promoting-astrocyte-activation
#8
Xiang Zhang, Hao Yao, Qingqing Qian, Nana Li, Wenjie Jin, Yanning Qian
BACKGROUND: Astrocytes, the major glial cell type that has been increasingly recognized as contributing to neuroinflammation, are critical in the occurrence and development of postoperative cognitive dysfunction (POCD). Although emerging evidence showed that brain mast cells (MCs) are the "first responders" in neuroinflammation, little is known about the functional communication between MCs and astrocytes. METHODS: In this study, we investigated the potential regulation of astrocyte activation by MCs...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27830357/effects-of-ulinastatin-on-early-postoperative-cognitive-function-after-one-lung-ventilation-surgery-in-elderly-patients-receiving-neoadjuvant-chemotherapy
#9
Kai-Yuan Wang, Quan-Yong Yang, Peng Tang, Hui-Xia Li, Hong-Wei Zhao, Xiu-Bao Ren
We investigated the effects of ulinastatin on early postoperative cognitive dysfunction (POCD) after one-lung ventilation (OLV) surgery in elderly patients receiving neoadjuvant chemotherapy. Eighty elderly patients with preoperative neoadjuvant chemotherapy scheduling for radical esophagectomy under OLV were recruited. They were randomly divided into an ulinastatin pretreatment group (U group, n = 40) and a control group (C group, n = 40). The U group received 10,000 U/kg ulinastatin before anesthesia and 5000 U/kg daily on postoperative days 1 to 3, while C group received saline...
November 9, 2016: Metabolic Brain Disease
https://www.readbyqxmd.com/read/27809575/a-systematic-review-of-postoperative-cognitive-decline-following-open-and-endovascular-aortic-aneurysm-surgery
#10
R A Benson, B A Ozdemir, D Matthews, I M Loftus
OBJECTIVES Postoperative cognitive decline (POCD) is a well-recognised neurological phenomenon following major surgery. Most commonly seen in elderly patients, it has direct links to increased long-term morbidity and reduced quality of life. Its incidence following open and endovascular abdominal and thoracic aneurysm surgery is unclear. The purpose of this systematic review is to collate available evidence for POCD following abdominal and thoracic aortic surgery, and to identify continuing controversies directing future research...
November 4, 2016: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/27790135/nox-2-mediated-phenotype-loss-of-hippocampal-parvalbumin-interneurons-might-contribute-to-postoperative-cognitive-decline-in-aging-mice
#11
Li-Li Qiu, Dan Luo, Hui Zhang, Yun S Shi, Yan-Jun Li, Dan Wu, Jiang Chen, Mu-Huo Ji, Jian-Jun Yang
Postoperative cognitive decline (POCD) is a common complication following anesthesia and surgery, especially in elderly patients; however, the precise mechanisms of POCD remain unclear. Here, we investigated whether nicotinamide adenine dinucleotide phosphate (NADPH) oxidase mediated-abnormalities in parvalbumin (PV) interneurons play an important role in the pathophysiology of POCD. The animal model was established using isoflurane anesthesia and exploratory laparotomy in 16-month-old male C57BL/6 mice. For interventional experiments, mice were chronically treated with the NADPH oxidase inhibitor apocynin (APO)...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27733186/deferoxamine-regulates-neuroinflammation-and-iron-homeostasis-in-a-mouse-model-of-postoperative-cognitive-dysfunction
#12
Yuping Li, Ke Pan, Lin Chen, Jiao-Lin Ning, Xiaojun Li, Ting Yang, Niccolò Terrando, Jianteng Gu, Guocai Tao
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a common complication after surgery, especially amongst elderly patients. Neuroinflammation and iron homeostasis are key hallmarks of several neurological disorders. In this study, we investigated the role of deferoxamine (DFO), a clinically used iron chelator, in a mouse model of surgery-induced cognitive dysfunction and assessed its neuroprotective effects on neuroinflammation, oxidative stress, and memory function. METHODS: A model of laparotomy under general anesthesia and analgesia was used to study POCD...
October 12, 2016: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/27676314/postoperative-cognitive-dysfunction-and-its-relationship-to-cognitive-reserve-in-elderly-total-joint-replacement-patients
#13
J E Scott, J L Mathias, A C Kneebone, J Krishnan
Whether total joint replacement (TJR) patients are susceptible to postoperative cognitive dysfunction (POCD) remains unclear due to inconsistencies in research methodologies. Moreover, cognitive reserve may moderate the development of POCD after TJR, but has not been investigated in this context. The current study investigated POCD after TJR, and its relationship with cognitive reserve, using a more rigorous methodology than has previously been utilized. Fifty-three older adults (aged 50+) scheduled for TJR were assessed pre and post surgery (6 months)...
September 27, 2016: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27631973/pathological-changes-of-the-hippocampus-and-cognitive-dysfunction-following-frontal-lobe-surgery-in-a-rat-model
#14
Santiago Hem, Romina Albite, Monica Loresi, Jorge Rasmussen, Pablo Ajler, Claudio Yampolsky, Joseph D Chabot, Peter C Gerszten, Ezequiel Goldschmidt
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a known complication after intracranial surgery. Impaired hippocampal neurogenesis has been associated with cognitive dysfunction in animal models. METHODS: In order to assess hippocampal changes after brain surgery, a frontal lobe corticectomy was performed in ten adult Wistar rats (group 4). Three different control groups (n = 10 each) included no treatment (G1), general anesthesia alone (G2), and craniectomy without dural opening (G3)...
November 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27608977/deferoxamine-pre-treatment-protects-against-postoperative-cognitive-dysfunction-of-aged-rats-by-depressing-microglial-activation-via-ameliorating-iron-accumulation-in-hippocampus
#15
Ke Pan, Xiaojun Li, Yan Chen, Dan Zhu, Yuping Li, Guocai Tao, Zhiyi Zuo
Postoperative cognitive dysfunction (POCD) is a common complication of elderly patients after surgery. The mechanisms of POCD have not been clarified. Iron accumulation is a feature of neurodegeneration. Recent reports showed that iron content was increased with impaired cognition induced by surgery. We sought to investigate whether iron chelation would attenuate POCD. In this study, male aged (18 months) Sprague-Dawley rats received 100 mg/kg deferoxamine or saline solution (0.9%) for 6 days before exploratory laparotomy...
December 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27600013/-incidence-of-the-post-operative-cognitive-dysfunction-in-elderly-patients-with-general-anesthesia-combined-with-epidural-anesthesia-and-patient-controlled-epidural-analgesia
#16
Yan Wang, Xiaohua Liu, Haiying Li
OBJECTIVE: To explore the effect of general anesthesia combined with epidural anesthesia and patient-controlled epidural analgesia on the incidence of the post-operative cognitive dysfunction (POCD) in elderly patients.
 METHODS: A total of 100 elderly patients with gastric cancer, who underwent radical gastrectomy in Yan'an People's Hospital from March 2012 to March 2015, were randomly divided into 3 groups: a general anesthesia and patient-controlled intravenous analgesia (PCIA) (Group I, n=35), a general anesthesia combined with epidural anesthesia and PCIA (Group II, n=30), and a general anesthesia combined with epidural anesthesia and patient-controlled epidural analgesia (PCEA) (Group III, n=35)...
August 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27599409/activation-of-mtor-signaling-leads-to-orthopedic-surgery-induced-cognitive-decline-in-mice-through-%C3%AE-amyloid-accumulation-and-tau-phosphorylation
#17
Wenzhen Shen, Keliang Lu, Jiawan Wang, Anshi Wu, Yun Yue
Postoperative cognitive dysfunction (POCD) is a serious complication following surgery, however, the mechanism of POCD remains to be elucidated. Previous evidence has revealed that POCD may be associated with the pathogenesis of neurodegenerative processes. The mammalian target of rapamycin (mTOR) signaling pathway has been reported to be crucial in the pathophysiology of neurodegenerative diseases. However, the implications of mTOR in POCD remains to be fully elucidated. In the present study, western blotting and enzyme‑linked immunosorbent assay were used to determine the expression of mTOR and any associated downstream targets; contextual fear conditioning was used to estimate the learning and memory ability of mice...
October 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27597957/effect-of-ulinastatin-in-the-treatment-of-postperative-cognitive-dysfunction-review-of-current-literature
#18
REVIEW
Zheng-Tao Lv, Jun-Ming Huang, Jin-Ming Zhang, Jia-Ming Zhang, Jin-Feng Guo, An-Min Chen
Background. Ulinastatin, identified as a urinary trypsin inhibitor, has been widely used in patients with inflammatory disorders. However, little is known about its effect on postoperative cognitive dysfunction (POCD). The aim of our current work is to review the current body of literature. Methods. A systematic literature search in PubMed and EMBASE was performed to identify randomized controlled trials. Incidence of POCD, MMSE score, and laboratory indicators (IL-6, TNF-α, CRP, and S100β) were selected as outcomes...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27591465/postoperative-persistent-chronic-pain-what-do-we-know-about-prevention-risk-factors-and-treatment
#19
Durval Campos Kraychete, Rioko Kimiko Sakata, Leticia de Oliveira Carvalho Lannes, Igor Dórea Bandeira, Eduardo Jun Sadatsune
BACKGROUND AND OBJECTIVES: Postoperative persistent chronic pain (POCP) is a serious health problem, disabling, undermining the quality of life of affected patients. Although more studies and research have addressed the possible mechanisms of the evolution from acute pain to chronic postoperatively, there are still no consistent data about the risk factors and prevention. This article aims to bring what is in the panorama of the current literature available. CONTENT: This review describes the definition, risk factors, and mechanisms of POCD, its prevention and treatment...
September 2016: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/27578364/no-convincing-association-between-post-operative-delirium-and-post-operative-cognitive-dysfunction-a-secondary-analysis
#20
M Franck, K Nerlich, B Neuner, P Schlattmann, W R Brockhaus, C D Spies, F M Radtke
BACKGROUND: Post-operative delirium and post-operative cognitive dysfunction (POCD) are both common but it has not been clarified how closely they are associated. We aimed to assess the possible relationship in a secondary analysis of data from the 'Surgery Depth of anaesthesia and Cognitive outcome'- study. METHODS: We included patients aged ≥ 60 years undergoing non-cardiac surgery planned for longer than 60 min. Delirium was assessed according to the Diagnostic and Statistical Manual of Mental Disorders IV criteria in the post-anaesthesia care unit (PACU) as well as within the first week after surgery...
November 2016: Acta Anaesthesiologica Scandinavica
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