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Propofol analysis

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https://www.readbyqxmd.com/read/29679758/validation-and-bioinformatic-analysis-of-propofol-induced-differentially-expressed-micrornas-in-primary-cultured-neural-stem-cells
#1
Yan Li, Youtan Liu, Jun Fan, Quan Zhou, Xiuling Song, Zhiyong Peng, Zaisheng Qin, Tao Tao
Propofol, a widely used intravenous anesthetic, was previously considered as a neuroprotective agent. Recently, however, accumulating evidence suggests that it may cause neurotoxicity, especially in the development of neural stem cells (NSCs). The potential mechanisms contributing to propofol-induced neurotoxicity during neurogenesis, such as those involving microRNAs (miRNAs), are still unknown. In this study, a total of 27 differentially expressed miRNAs were identified in our initial screen and 6 miRNAs were validated by qRT-PCR...
April 18, 2018: Gene
https://www.readbyqxmd.com/read/29667627/propofol-inhibits-hela-cells-by-impairing-autophagic-flux-via-amp-activated-protein-kinase-ampk-activation-and-endoplasmic-reticulum-stress-regulated-by-calcium
#2
Xi Chen, Kai Li, Guoqing Zhao
BACKGROUND Propofol has antitumor effects against various cancers. However, the mechanism of action of propofol in HeLa human cervical cancer cells has not been elucidated. MATERIAL AND METHODS We treated HeLa human cervical cancer cells with different concentrations of propofol. Cell viability was evaluated with Cell Counting Kit-8 and apoptosis was analyzed by annexin V-fluorescein isothiocyanate and propidium iodide staining and flow cytometry. Autophagosome formation was evaluated based on microtubule-associated protein light chain (LC)3 conversion and light chain 3 puncta formation...
April 18, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29661414/dexmedetomidine-metabolic-clearance-is-not-affected-by-fat-mass-in-obese-patients
#3
A Rolle, S Paredes, L I Cortínez, B J Anderson, N Quezada, S Solari, F Allende, J Torres, D Cabrera, V Contreras, J Carmona, C Ramírez, A M Oliveros, M Ibacache
BACKGROUND: Obesity has been associated with reduced dexmedetomidine clearance, suggesting impaired hepatic function or reduced hepatic blood flow. The aim of this study was to clarify the effect of obesity in dexmedetomidine metabolic clearance. METHODS: Forty patients, ASA I-III, 18-60 yr old, weighing 47-126 kg, scheduled for abdominal laparoscopic surgery, were enrolled. Anaesthetic agents (propofol, remifentanil, and dexmedetomidine) were dosed based on lean body weight measured by dual X-ray absorptiometry...
May 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29661242/use-applicability-and-reliability-of-depth-of-hypnosis-monitors-in-children-a-survey-among-members-of-the-european-society-for-paediatric-anaesthesiology
#4
Yuen Man Cheung, Gail Scoones, Robert Jan Stolker, Frank Weber
BACKGROUND: To assess the thoughts of practicing anaesthesiologists about the use of depth of hypnosis monitors in children. METHODS: Members of the European Society for Paediatric Anaesthesiology were invited to participate in an online survey about their thoughts regarding the use, applicability and reliability of hypnosis monitoring in children. RESULTS: The survey achieved a response rate of 30% (N = 168). A total of 138 completed surveys were included for further analysis...
April 16, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29643556/a-prospective-observational-study-of-injection-pain-in-children-with-medium-plus-long-chain-triglyceride-and-long-chain-triglyceride-propofol-premixed-with-lignocaine
#5
Bhavika Singla, Anila D Malde
Background and Aims: Propofol injection pain is an unresolved problem in children. Although medium and long chain triglyceride (MCT-LCT) propofol has shown promising results in adults, its efficacy in children is not proven. In a prospective observational study the incidence and severity of pain with MCT-LCT and LCT propofol in children was compared. Methods: After obtaining approval from the Institutional Ethics Committee, 170 children (age group 6 months to 8 years) scheduled for various surgeries were included in this study...
March 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29628875/profiling-of-long-non-coding-rnas-and-mrnas-by-rna-sequencing-in-the-hippocampi-of-adult-mice-following-propofol-sedation
#6
Jun Fan, Quan Zhou, Yan Li, Xiuling Song, Jijie Hu, Zaisheng Qin, Jing Tang, Tao Tao
Propofol is a frequently used intravenous anesthetic agent. The impairment caused by propofol on the neural system, especially the hippocampus, has been widely reported. However, the molecular mechanism underlying the effects of propofol on learning and memory functions in the hippocampus is still unclear. In the present study we performed lncRNA and mRNA analysis in the hippocampi of adult mice, after propofol sedation, through RNA-Sequencing (RNA-Seq). A total of 146 differentially expressed lncRNAs and 1103 mRNAs were identified...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29628584/evaluation-of-the-hemodynamic-response-of-intravenous-clonidine-versus-ropivacaine-scalp-block-to-insertion-of-scalp-pins-in-neurosurgical-patients
#7
Saraswathi Nagappa, Sandhya Kalappa, Raghavendra Biligiri Sridhara
Background: The application of the skull-pin head-holder, used to stabilize the head during neurosurgical procedures, produces an intense nociceptive stimulus and results in abrupt increases in blood pressure and cerebral blood flow under general anesthesia. Different anesthetic and pharmacologic techniques, including local anesthetics, narcotics, antihypertensives, and deepening of anesthesia with inhalation anesthetics, have been used to blunt this deleterious effect with variable success...
January 2018: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29627201/perioperative-analgesic-effects-of-an-ultrasound-guided-transversus-abdominis-plane-block-with-a-mixture-of-bupivacaine-and-lidocaine-in-cats-undergoing-ovariectomy
#8
Despoina Skouropoulou, Luca Lacitignola, Paola Centonze, Angela Simone, Alberto M Crovace, Francesco Staffieri
OBJECTIVE: To evaluate the perioperative analgesic effects of a transversus abdominis plane (TAP) block with a mixture of lidocaine and bupivacaine administered to cats undergoing ovariectomy. STUDY DESIGN: Controlled, randomized, prospective, blinded clinical study. ANIMALS: A group of 20 healthy cats. METHODS: Robenacoxib (2 mg kg-1 ) was administered subcutaneously 0.5 hour before intramuscular (IM) administration of ketamine (5 mg kg-1 ), methadone (0...
February 3, 2018: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29621201/remote-ischemic-preconditioning-does-not-affect-the-release-of-humoral-factors-in-propofol-anesthetized-cardiac-surgery-patients-a-secondary-analysis-of-the-ripheart-study
#9
Julia Ney, Katleen Hoffmann, Patrick Meybohm, Andreas Goetzenich, Sandra Kraemer, Carina Benstöm, Nina C Weber, Johannes Bickenbach, Rolf Rossaint, Gernot Marx, Kai Zacharowski, Jürgen Bernhagen, Christian Stoppe
In contrast to several smaller studies, which demonstrate that remote ischemic preconditioning (RIPC) reduces myocardial injury in patients that undergo cardiovascular surgery, the RIPHeart study failed to demonstrate beneficial effects of troponin release and clinical outcome in propofol-anesthetized cardiac surgery patients. Therefore, we addressed the potential biochemical mechanisms triggered by RIPC. This is a predefined prospective sub-analysis of the randomized and controlled RIPHeart study in cardiac surgery patients ( n = 40) that was recently published...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29606630/functional-characterization-of-native-high-affinity-gaba-a-receptors-in-human-pancreatic-%C3%AE-cells
#10
Sergiy V Korol, Zhe Jin, Yang Jin, Amol K Bhandage, Anders Tengholm, Nikhil R Gandasi, Sebastian Barg, Daniel Espes, Per-Ola Carlsson, Derek Laver, Bryndis Birnir
In human pancreatic islets, the neurotransmitter γ-aminobutyric acid (GABA) is an extracellular signaling molecule synthesized by and released from the insulin-secreting β cells. The effective, physiological GABA concentration range within human islets is unknown. Here we use native GABAA receptors in human islet β cells as biological sensors and reveal that 100-1000nM GABA elicit the maximal opening frequency of the single-channels. In saturating GABA, the channels desensitized and stopped working. GABA modulated insulin exocytosis and glucose-stimulated insulin secretion...
March 22, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29588038/electrophysiological-analysis-of-voltage-gated-ion-channel-modulation-by-general-anesthetics
#11
Elaine Yang, Lianteng Zhi, Qiansheng Liang, Manuel Covarrubias
Voltage-gated ion channels (VGICs) of excitable tissues are emerging as targets likely involved in both the therapeutic and toxic effects of inhaled and intravenous general anesthetics. Whereas sevoflurane and propofol inhibit voltage-gated Na+ channels (Navs), sevoflurane potentiates certain voltage-gated K+ channels (Kvs). The combination of these effects would dampen neural excitability and, therefore, might contribute to the clinical endpoints of general anesthesia. As the body of work regarding the interaction of general anesthetics with VGICs continues to grow, a multidisciplinary approach involving functional, biochemical, structural, and computational techniques, many of which are detailed in other chapters, has increasingly become necessary to solve the molecular mechanism of general anesthetic action on VGICs...
2018: Methods in Enzymology
https://www.readbyqxmd.com/read/29576822/predisposing-factors-clinical-assessment-management-and-outcomes-of-agitation-in-the-trauma-intensive-care-unit
#12
Saeed Mahmood, Omaima Mahmood, Ayman El-Menyar, Mohammad Asim, Hassan Al-Thani
BACKGROUND: Agitation occurs frequently among critically ill patients admitted to the intensive care unit (ICU). We aimed to evaluate the frequency, predisposing factors and outcomes of agitation in trauma ICU. METHODS: A retrospective analysis was conducted to include patients who were admitted to the trauma ICU between April 2014 and March 2015. Data included patient's demographics, initial vitals, associated injuries, Ramsey Sedation Scale, Glasgow Coma Scale, head injury lesions, use of sedatives and analgesics, head interventions, ventilator days, and ICU length of stay...
2018: World Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29570916/factors-affecting-propofol-dosage-for-sedation-of-pediatric-oncologic-patients
#13
Tak Kyu Oh, Boram Park, Dong-Eun Lee, Woosik Eom, Sungwoo Kang
BACKGROUND: There is limited reference data for determining the appropriate dose of propofol for individual patients. Therefore, we investigated the factors affecting propofol dosage for pediatric patients who underwent sedation for computed tomography (CT) simulation. METHODS: We retrospectively analyzed the electronic medical records of pediatric patients who underwent CT simulation for proton therapy following a cancer diagnosis at the National Cancer Center (Korea) from May 1, 2012 to April 30, 2016...
March 23, 2018: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29560119/hcn-channels-contribute-to-the-sensitivity-of-intravenous-anesthetics-in-developmental-mice
#14
Jie Gao, Zhiqiang Hu, Liwei Shi, Na Li, Yeling Ouyang, Shaofang Shu, Shanglong Yao, Xiangdong Chen
It is widely accepted that the induction dose of anesthetics is higher in infants than in adults, although the relevant molecular mechanism remains elusive. We previously showed neuronal hyperpolarization-activated, cyclic nucleotide-gated (HCN) channels contribute to hypnotic actions of propofol and ketamine. Interestingly, the expression of HCN channels in neocortex significantly changes during postnatal periods. Thus, we postulated that changes in HCN channels expression might contribute to sensitivity to intravenous anesthetics...
February 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29559768/can-dexmedetomidine-reduce-atrial-fibrillation-after-cardiac-surgery-a-systematic-review-and-meta-analysis
#15
REVIEW
Zhipeng Zhu, Hongmei Zhou, Yunjian Ni, Cheng Wu, Caijun Zhang, Xiaoyan Ling
Purpose: Cardiac surgery patients always present with atrial fibrillation (AF) after admission to the intensive care unit, leading to high mortality and lengthy hospitalization. Dexmedetomidine (DEX) is a popular medication used for sedation in the intensive care unit; however, whether it can reduce AF needs to be analyzed. Materials and methods: Three primary databases, Medline, Embase (Ovid SP) and the Cochrane Central Register of Controlled Trials (CENTRAL), were searched...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29557260/-palliative-sedation-a-retrospective-cohort-study-on-the-use-and-labelling-of-continuously-administered-sedatives-on-a-palliative-care-unit
#16
Eva Schildmann, Sebastian Pörnbacher, Helen Kalies, Claudia Bausewein
BACKGROUND: Sedatives are frequently used towards the end of life. However, there is scarce information when their use is labelled as 'palliative sedation'. AIM: To assess the use and labelling of 'continuous administration of sedatives within the last 7 days of life', based on objective operational criteria, on a palliative care unit. DESIGN: Retrospective cohort study, using medical records. Explorative statistical analysis (SPSS 23). SETTING/PARTICIPANTS: Patients who died on a palliative care unit from August 2014 to July 2015...
March 1, 2018: Palliative Medicine
https://www.readbyqxmd.com/read/29545833/microrna-383-upregulation-protects-against-propofol-induced-hippocampal-neuron-apoptosis-and-cognitive-impairment
#17
Xinlei Wang, Guoyou Ding, Wei Lai, Shiwen Liu, Jun Shuai
Anesthesia-induced cognitive impairment is a recognized clinical phenomenon. The present study aimed to investigate the effect of microRNA-383 (miR-383) expression on propofol-induced learning and memory impairment. In total, 48 male Sprague-Dawley rats (weight, 250±10 g) were randomly divided into four groups (n=12 each): Control group, and three groups of rats that were anesthetized with propofol for 6 h and untreated (propofol model group), treated with a constructed lentivirus vector expressing miR-383 mimics (mimic + propofol group), or treated with miR-383 scramble (scramble + propofol group)...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29535538/effects-of-propofol-based-total-intravenous-anesthesia-on-gastric-cancer-a-retrospective-study
#18
Xiaoyu Zheng, Yu Wang, Linlin Dong, Su Zhao, Liping Wang, Hong Chen, Yang Xu, Guonian Wang
Background: Several kinds of cancer surgeries with propofol-based total intravenous anesthesia (TIVA) have been shown to have better outcomes than those with sevoflurane-based inhalational anesthesia (INHA). However, the effects of this anesthetic technique have not been investigated in patients with gastric cancer. In this study, the authors retrospectively examined the link between the choice of anesthetic technique and overall survival in patients undergoing gastric cancer resection...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29534398/-the-application-of-cortical-and-subcortical-stimulation-threshold-in-identifying-the-motor-pathway-and-guiding-the-resection-of-gliomas-in-the-functional-areas
#19
X H Ren, X C Yang, W Huang, K Y Yang, L Liu, H Qiao, L J Guo, Y Cui, S Lin
Objective: This study aimed to analyze the application of cortical and subcortical stimulation threshold in identifying the motor pathway and guiding the resection of gliomas in the functional area, and to illustrate the minimal safe threshold by ROC method. Methods: Fifty-seven patients with gliomas in the functional areas were enrolled in the study at Beijing Tiantan Hospital from 2015 to 2017. Anesthesia was maintained intravenously with propofol 10% and remifentanil. Throughout the resection process, cortical or subcortical stimulation threshold was determined along tumor border using monopolar or bipolar electrodes...
March 6, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29526045/comparison-of-propofol-monotherapy-and-propofol-combination-therapy-for-sedation-during-gastrointestinal-endoscopy-a-systematic-review-and-meta-analysis
#20
REVIEW
Sang Won Yoon, Geun Joo Choi, Oh-Haeng Lee, Il Jae Yoon, Hyun Kang, Chong Wha Baek, Yong Hun Jung, Young Cheol Woo
BACKGROUND: Previous randomized controlled trials have reported conflicting findings comparing propofol combination therapy(PCT) with propofol monotherapy(PMT) for sedation of patients undergoing gastrointestinal endoscopy. Therefore, a systematic review was performed to compare the efficacy and safety of PCT and PMT in such patients. METHODS: We searched MEDLINE, EMBASE and CENTRAL databases to identify all randomized controlled trials that compared the efficacy and safety of PCT and PMT for sedation of patients undergoing gastrointestinal endoscopy...
March 11, 2018: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
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