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Cognition and anesthesia

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https://www.readbyqxmd.com/read/28433649/chronic-nicotine-attenuates-behavioral-and-synaptic-plasticity-impairments-in-a-streptozotocin-model-of-alzheimer-s-disease
#1
Esteves Im, Lopes-Aguiar C, Rossignoli Mt, Ruggiero Rn, Broggini Acs, Bueno-Junior Ls, Kandratavicius L, Monteiro Mr, Romcy-Pereira Rn, Leite Jp
Brain glucose metabolism is altered in sporadic Alzheimer's disease (sAD), whose pathologies are reproduced in rodents by intracerebroventricular (icv) infusion of streptozotocin (STZ) in subdiabetogenic doses. The icv-STZ model also culminates in central cholinergic dysfunctions, which in turn are known to underlie both the sAD cognitive decline, and synaptic plasticity impairments. Considering the cognitive-enhancing potential of chronic nicotine (Nic), we investigated whether it attenuates icv-STZ-induced impairments in recognition memory and synaptic plasticity in a cognition-relevant substrate: the hippocampal CA1-medial prefrontal cortex (mPFC) pathway...
April 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28430628/critical-role-of-matrix-metallopeptidase-9-in-postoperative-cognitive-dysfunction-and-age-dependent-cognitive-decline
#2
Jiangjiang Bi, Weiran Shan, Ailin Luo, Zhiyi Zuo
BACKGROUND: Postoperative cognitive dysfunction (POCD) is a significant clinical syndrome. Neuroinflammation is an important pathological process for POCD. However, it is not clear how systemic inflammation induced by surgery on peripheral tissues or organs is transmitted into the brain. We determined whether matrix metallopeptidase 9 (MMP9), a protein that can increase blood-brain barrier permeability, is critical in this transmission. The role of MMP9 in age-dependent cognitive decline was also determined...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422805/a-randomized-pilot-study-comparing-ketamine-and-methohexital-anesthesia-for-electroconvulsive-therapy-in-patients-with-depression
#3
Shona L Ray-Griffith, Lou Ann Eads, Xiaotong Han, Kimberly Golden, Zachary N Stowe
OBJECTIVE: This randomized controlled pilot study examines the differences in response to electroconvulsive therapy (ECT) as defined by an improvement of depressive symptoms between ketamine and methohexital as the primary anesthetic agent. Adverse effects and cognitive tolerability were also examined. METHODS: Subjects undergoing ECT for unipolar or bipolar depression were randomized to receive ketamine or methohexital as the anesthetic agent. Primary outcome measure includes the Hamilton rating scale for depression (17-item)...
April 18, 2017: Journal of ECT
https://www.readbyqxmd.com/read/28419879/challenging-the-myth-of-right-non-dominant-hemisphere-lessons-from-cortico-subcortical-stimulation-mapping-in-awake-surgery-and-surgical-implications
#4
REVIEW
Tatiana Vilasboas, Guillaume Herbet, Hugues Duffau
For a long time, the right hemisphere (RH) was considered as "non-dominant", especially in right-handers. In neurosurgical practice, this dogma resulted in the selection of awake procedure with language mapping only for lesions of the left "dominant" hemisphere. Conversely, surgery under general anesthesia (possibly with motor mapping) was usually proposed for right lesions. However, when objective neuropsychological assessments were performed, they frequently revealed cognitive and behavioral deficits following brain surgery, even in the RH...
April 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28415680/long-term-neurocognitive-dysfunction-in-offspring-via-ngf-erk-creb-signaling-pathway-caused-by-ketamine-exposure-during-the-second-trimester-of-pregnancy-in-rats
#5
Yanan Li, Xinran Li, Cen Guo, Lina Li, Yuxin Wang, Yiming Zhang, Yu Chen, Wenhan Liu, Li Gao
Early life exposure to ketamine caused neurohistopathologic changes and persistent cognitive dysfunction. For this study, a pregnant rat model was developed to investigate neurocognitive effects in the offspring, following ketamine exposure during the second trimester. Pregnant rats on gestational day 14 (equal to midtrimester pregnancy in humans), intravenously received 200 mg/kg ketamine for 3 h. Their behavior was tested (Morris water maze, odor recognition test, and fear conditioning) at postnatal days (P25-30)...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412051/-impact-of-postoperative-cognitive-decline-in-quality-of-life-a-prospective-study
#6
Joana Borges, Joana Moreira, Adriano Moreira, Alice Santos, Fernando J Abelha
BACKGROUND: Regardless the progress in perioperative care postoperative cognitive decline (PCD) has been accepted unequivocally as a significant and frequent complication of surgery in older patients. The aim of this study was to evaluate the incidence of postoperative cognitive decline and its influence on quality of life three months after surgery. METHODS: Observational, prospective study in a Post-Anesthesia Care Unit (PACU) in patients aged above 45 years, after elective major surgery...
April 12, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28411068/protective-effect-of-dapsone-on-cognitive-impairment-induced-by-propofol-involves-hippocampal-autophagy
#7
Ning Yang, Lunxu Li, Zhengqian Li, Cheng Ni, Yiyun Cao, Taotao Liu, Miao Tian, Dehua Chui, Xiangyang Guo
Post-operative cognitive dysfunction (POCD) is a commonly seen postoperative complication in elderly patients and its underlying mechanisms are still unclear. Autophagy, a degradation mechanism of cellular components, is required for cell survival and many physiological processes. Although propofol is one of the most commonly used intravenous anesthetics, investigations into its mechanisms and effects on cognition in aged rodents are relatively scarce. In this study, we evaluate the influence of propofol on learning and memory, and identify the potential role of hippocampal autophagy in propofol-induced cognitive alterations in aged rats...
April 12, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28407792/treatment-of-post-anesthesia-dementia-with-perispinal-etanercept-injection-and-hyperbaric-oxygen-therapy-a-case-report
#8
Steve Best, Dan G Pavel
BACKGROUND: We report on the first case of successful treatment for post-anesthesia dementia with perispinal etanercept injection combined with hyperbaric oxygen therapy. CASE PRESENTATION: Our patient was a 77-year-old Caucasian man of Mexican ethnicity who presented to our clinic 4.5 years after a knee replacement surgery. Immediately post-surgery, the patient began to show dramatic cognitive, physical, and emotional impairment compared with his presurgical state; these symptoms were still present when he arrived at our clinic...
April 14, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28405951/posterior-retroperitonoscopic-adrenalectomy-a-back-door-access-with-an-unusually-rapid-learning-curve
#9
Sohail Bakkar, Gabriele Materazzi, Lorenzo Fregoli, Piermarco Papini, Paolo Miccoli
Posterior retroperitonoscopic adrenalectomy (PRA) has become a standard approach to the adrenal gland. The aim of this study was to report an initial experience with the procedure following a proper preparatory phase highlighting the rapidity, safety and effectiveness by which it could be introduced into a surgeon's practice. Between May 2015 and July 2016, 14 PRAs were performed in 14 patients (9 females and 5 males). The average age was 46 years, BMI: 25.5 kg/m(2), and ASA score: 2. Indications included: incidenatloma (n = 5), Conn's adenoma (n = 5), and Cushing's adenoma (n = 4)...
April 12, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28403230/isoflurane-anesthesia-promotes-cognitive-impairment-by-inducing-expression-of-%C3%AE-amyloid-protein-related-factors-in-the-hippocampus-of-aged-rats
#10
Shuai Zhang, Xueyuan Hu, Wei Guan, Li Luan, Bei Li, Qichao Tang, Honggang Fan
Isoflurane anesthesia has been shown to be responsible for cognitive impairment in Alzheimer's disease (AD) and development of AD in the older age groups. However, the pathogenesis of AD-related cognitive impairments induced by isoflurane anesthesia remains elusive. Thus, this study was designed to investigate the mechanism by which isoflurane anesthesia caused AD-related cognitive impairments. Aged Wistar rats were randomly divided into 6 groups (n = 12), 1 control group (CONT) and 5 isoflurane treated (ISO) groups (ISO 0, ISO 0...
2017: PloS One
https://www.readbyqxmd.com/read/28391017/pretreatment-with-minocycline-restores-neurogenesis-in-the-subventricular-zone-and-subgranular-zone-of-the-hippocampus-after-ketamine-exposure-in-neonatal-rats
#11
Yang Lu, P K Giri, Shan Lei, Juan Zheng, Weisong Li, Ning Wang, Xinlin Chen, Haixia Lu, Zhiyi Zuo, Yong Liu, Pengbo Zhang
Ketamine is commonly used for anesthesia in pediatric patients. Recent studies indicated that ketamine exposure in the developing brain can induce neuroapoptosis and disturb normal neurogenesis, which will result in long-lasting cognitive impairment. Minocycline exerts neuroprotection against a wide range of toxic insults in neurodegenerative disease models. In the present study, we investigated whether the disturbed neurogenesis and behavioral deficits after ketamine neonatal exposure could be alleviated by minocycline...
April 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/28387891/evaluation-of-the-postoperative-cognitive-dysfunction-in-elderly-patients-with-general-anesthesia
#12
Y-L Chi, Z-S Li, C-S Lin, Q Wang, Y-K Zhou
OBJECTIVE: The present study is aimed to study the neuron-specific enolase (NSE) and S100b proteins in the evaluation of postoperative cognitive dysfunction in elderly patients with general anesthesia. PATIENTS AND METHODS: A total of 142 aged patients, who were treated with transurethral resection of the prostate (TURP) surgery under general anesthesia with propofol from June 2014 to December 2015, were randomly divided into two groups. The experiment group was given scopolamine butylbromide by intramuscular injection before the operation, while the control group had no preoperative intramuscular injection...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28386360/neuroprotective-effect-of-mir-665-against-sevoflurane-anesthesia-induced-cognitive-dysfunction-in-rats-through-pi3k-akt-signaling-pathway-by-targeting-insulin-like-growth-factor-2
#13
Xihua Lu, Shuaiguo Lv, Yan Mi, Lei Wang, Gensheng Wang
The aim of this study was to investigate the in vivo and in vitro effects of miR-665 on sevoflurane anesthesia-induced cognitive dysfunction. SH-SY5Y cells and male SD rats were treated with sevoflurane to simulate anesthesia-induced cognitive dysfunction. The cells and rats both were transfected with a miR-665 mimic, inhibitor, scramble, IGF-2 siRNA, or treated with P13K/Akt inhibitor LY294002. The cell apoptosis, autophagy, growth related proteins, and mRNA levels were measured using different methods. The motor performance was assessed using the Morris water maze (MWM) test...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28386342/hydrogen-rich-saline-attenuates-isoflurane-induced-caspase-3-activation-and-cognitive-impairment-via-inhibition-of-isoflurane-induced-oxidative-stress-mitochondrial-dysfunction-and-reduction-in-atp-levels
#14
Cheng Li, Lengchen Hou, Dan Chen, Fuqing Lin, Tao Chang, Mengzhu Li, Lingling Zhang, Xiaoyin Niu, Huiying Wang, Shukun Fu, Junhua Zheng
OBJECTIVES: The inhaled general anesthetic isoflurane has been shown to induce caspase-3 activation in vitro and in vivo. The underlying mechanisms and functional consequences of this activity remain unclear. Isoflurane can induce caspase-3 activation by causing accumulation of reactive oxygen species (ROS), mitochondrial dysfunction, and reduction in adenosine triphosphate (ATP) levels. This study aimed to investigate the protective effect of hydrogen, a novel antioxidant, against isoflurane-induced caspase-3 activation and cognitive impairment...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28383293/peripheral-nerve-block-as-a-supplement-to-light-or-deep-general-anesthesia-in-elderly-patients-receiving-total-hip-arthroplasty-a-prospective-randomized-study
#15
Bin Mei, Hanning Zha, Xiaolong Lu, Xinqi Cheng, Shishou Cheng, Xuesheng Liu, Yuanhai Li, Erwei Gu
BACKGROUND: Peripheral nerve block combined with general anesthesia is a preferable anesthesia method for elderly patients receiving hip arthroplasty. The depth of sedation may influence patient recovery. Therefore, we aimed to investigate the influence of peripheral nerve blockade and different intraoperative sedation levels on the short-term recovery of elderly patients receiving total hip arthroplasty. METHODS: Patients aged 65 years and older undergoing total hip arthroplasty were randomized into three groups: a general anesthesia without lumbosacral plexus block group, and two general anesthesia plus lumbosacral plexus block groups, each with a different level of sedation (light or deep)...
April 5, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28376701/mild-and-mild-to-moderate-traumatic-brain-injury-tbi-induced-significant-progressive-and-enduring-multiple-comorbidities
#16
Jiamei Hou, Rachel Nelson, Zachary Wilkie, Golam Mustafa, Shigeharu Tsuda, Floyd J Thompson, Prodip K Bose
Traumatic brain injury (TBI) can produce life-long disabilities including anxiety, cognitive, balance, and motor deficits. The experimental model of closed head TBI (cTBI) induced by weight drop / impact acceleration is known to produce hallmark TBI injuries. However, comprehensive long-term characterization of co-morbidities induced by graded mild to mild/moderate intensities using this experimental cTBI model has not been reported. The present study used two intensities of weight drop (1.0 m and 1.25 m/450 g) to produce cTBI in a rat model to investigate initial and long-term disability of four comorbidities: anxiety, cognitive, vestibulomotor, and spinal reflex that related to spasticity...
April 4, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28372661/effect-of-propofol-sevoflurane-and-isoflurane-on-postoperative-cognitive-dysfunction-following-laparoscopic-cholecystectomy-in-elderly-patients-a-randomized-controlled-trial
#17
Ying-Jie Geng, Qing-Hua Wu, Rui-Qin Zhang
STUDY OBJECTIVE: To compare the incidence of postoperative cognitive dysfunction (POCD) in elderly surgical patients (>60years) receiving different anesthetics (propofol, sevoflurane, or isoflurane) and to identify potential biomarkers of POCD in this patient population. DESIGN: Prospective, randomized, double-blind clinical trial. SETTING: University-affiliated teaching hospital. PATIENTS: One hundred and fifty elderly patients scheduled for laparoscopic cholecystectomy...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28355229/surgery-increases-cell-death-and-induces-changes-in-gene-expression-compared-with-anesthesia-alone-in-the-developing-piglet-brain
#18
Kevin D Broad, Go Kawano, Igor Fierens, Eridan Rocha-Ferreira, Mariya Hristova, Mojgan Ezzati, Jamshid Rostami, Daniel Alonso-Alconada, Badr Chaban, Jane Hassell, Bobbi Fleiss, Pierre Gressens, Robert D Sanders, Nicola J Robertson
In a range of animal species, exposure of the brain to general anaesthesia without surgery during early infancy may adversely affect its neural and cognitive development. The mechanisms mediating this are complex but include an increase in brain cell death. In humans, attempts to link adverse cognitive development to infantile anaesthesia exposure have yielded ambiguous results. One caveat that may influence the interpretation of human studies is that infants are not exposed to general anaesthesia without surgery, raising the possibility that surgery itself, may contribute to adverse cognitive development...
2017: PloS One
https://www.readbyqxmd.com/read/28338180/influence-of-dexmedetomidine-to-cognitive-function-during-recovery-period-for-children-with-general-anesthesia
#19
Z-M Jia, H-N Hao, M-L Huang, D-F Ma, X-L Jia, B Ma
OBJECTIVE: We studied the influence of Dexmedetomidine on cognitive function in children during the recovery period of general anesthesia. PATIENTS AND METHODS: Ninety-three children who underwent general anesthesia were selected and randomly divided into (1) the control group, (2) the dexmedetomidine group, and (3) the dezocine group. Fentanyl, propofol, and rocuronium were used in all patients to induce anesthesia, while sevoflurane inhalation and propofol were used to maintain anesthesia...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28332236/the-mortality-rate-of-electroconvulsive-therapy-a-systematic-review-and-pooled-analysis
#20
REVIEW
N Tørring, S N Sanghani, G Petrides, C H Kellner, S D Østergaard
OBJECTIVE: Electroconvulsive therapy (ECT) remains underutilized because of fears of cognitive and medical risks, including the risk of death. In this study, we aimed to assess the mortality rate of ECT by means of a systematic review and pooled analysis. METHOD: The study was conducted in adherence with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. The ECT-related mortality rate was calculated as the total number of ECT-related deaths reported in the included studies divided by the total number of ECT treatments...
March 23, 2017: Acta Psychiatrica Scandinavica
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