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T cell differentiation propofol

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https://www.readbyqxmd.com/read/27884341/propofol-inhibits-t-helper-cell-type-2-differentiation-by-inducing-apoptosis-via-activating-gamma-aminobutyric-acid-receptor
#1
Jingxia Meng, Xin Xin, Zhen Liu, Hao Li, Bo Huang, Yuguang Huang, Jing Zhao
BACKGROUND: Propofol has been shown to attenuate airway hyperresponsiveness in asthma patients. Our previous study showed that it may alleviate lung inflammation in a mouse model of asthma. Given the critical role of T-helper cell type-2 (Th2) differentiation in asthma pathology and the immunomodulatory role of the gamma-aminobutyric acid type A (GABAA) receptor, we hypothesized that propofol could alleviate asthma inflammation by inhibiting Th2 cell differentiation via the GABA receptor...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/25750280/effect-of-anaesthetic-technique-on-immune-cell-infiltration-in-breast-cancer-a-follow-up-pilot-analysis-of-a-prospective-randomised-investigator-masked-study
#2
RANDOMIZED CONTROLLED TRIAL
Fiona Desmond, Janet McCormack, Niall Mulligan, Maurice Stokes, Donal J Buggy
BACKGROUND: Live animal studies using an inoculation model of breast cancer indicate that anaesthetic drugs and techniques differentially affect cancer metastasis, inversely related to Natural Killer (NK) cell and T lymphocyte levels. Clinical histological studies demonstrate that the distribution of these immune cells and macrophages in intra-tumoral cancer tissue can predict prognosis and response to therapy. No study has evaluated whether the anaesthetic technique influences human breast cancer immune cell infiltration...
March 2015: Anticancer Research
https://www.readbyqxmd.com/read/23385038/differential-influence-of-propofol-on-different-cell-types-in-terms-of-the-expression-of-various-oxidative-stress-related-enzymes-in-an-experimental-endotoxemia-model
#3
Yu-Chuan Tsai, Chein-Chi Huang, Lu-Min Chu, Yen-Chin Liu
OBJECTIVES: Both overproduction of nitric oxide and oxidative injury to the cardiovascular and pulmonary systems contribute to fatal pathophysiology during endotoxemia. We investigated the effect of propofol on oxidative stress-related enzymes in lung (L2), heart (H9C2) and macrophage (NR8383) cells during endotoxemia. METHODS: Experimental endotoxemia was induced by co-culture of Escherichia coli lipopolysaccharide (15 μg/mL) in the abovementioned three types of cells that were under the effect of propofol (15 or 30 μM for 1 or 4 hours)...
December 2012: Acta Anaesthesiologica Taiwanica: Official Journal of the Taiwan Society of Anesthesiologists
https://www.readbyqxmd.com/read/22313063/the-mitochondrial-permeability-transition-pore-and-its-role-in-anaesthesia-triggered-cellular-protection-during-ischaemia-reperfusion-injury
#4
REVIEW
David T Andrews, Colin Royse, Alistair G Royse
This review summarises the most recent data in support of the role of the mitochondrial permeability transition pore (mPTP) in ischaemia-reperfusion injury, how anaesthetic agents interact with this molecular channel, and the relevance this holds for current anaesthetic practice. Ischaemia results in damage to the electron transport chain of enzymes and sets into play the assembly of a non-specific mega-channel (the mPTP) that transgresses the inner mitochondrial membrane. During reperfusion, uncontrolled opening of the mPTP causes widespread depolarisation of the inner mitochondrial membrane, hydrolysis of ATP, mitochondrial rupture and eventual necrotic cell death...
January 2012: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/21451217/propofol-alters-vesicular-transport-in-rat-cortical-neuronal-cultures
#5
D Turina, K Bjornstrom, T Sundqvist, C Eintrei
Neuronal intracellular transport is performed by motor proteins, which deliver vesicles, organelles and proteins along cytoskeletal tracks inside the neuron. We have previously shown that the anesthetic propofol causes dose- and time-dependent, reversible retraction of neuronal neurites. We hypothesize that propofol alters the vesicular transport of cortical neurons due to this neurite retraction. Primary cultures of co-cultivated rat cortical neurons and glial cells were exposed to either 2 μM propofol, control medium or the lipid vehicle, in time-response experiments...
February 2011: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/21362275/effects-of-propofol-anesthesia-and-sevoflurane-anesthesia-on-the-differentiation-of-human-t-helper-cells-during-surgery
#6
RANDOMIZED CONTROLLED TRIAL
Fu-hai Ji, Yu-lan Wang, Jian-ping Yang
BACKGROUND: Surgical stress causes a helper T-cell type 2 (Th2)-dominant status and disturbs the Th1/Th2 cytokine balance. Anesthesia can suppress the stress response to surgery, therefore it may inhibit the imbalance in the Th1/Th2 ratio. In this study, we assessed if propofol anesthesia and sevoflurane anesthesia influence the Th1/Th2 cytokine balance, and which anesthesia method better attenuates this ratio. METHODS: Twenty-eight patients with an American Society of Anesthesiologists (ASA) physical status of I undergoing laparoscopic cholecystectomy were selected...
February 2011: Chinese Medical Journal
https://www.readbyqxmd.com/read/20348139/translocation-of-protein-kinase-c-isoforms-is-involved-in-propofol-induced-endothelial-nitric-oxide-synthase-activation
#7
L Wang, B Wu, Y Sun, T Xu, X Zhang, M Zhou, W Jiang
BACKGROUND: Previous studies have indicated that protein kinase C (PKC) may enhance endothelial nitric oxide synthase (eNOS) activation, although the detailed mechanism(s) remains unclear. In this study, we investigated the roles of PKC isoforms in regulating propofol-induced eNOS activation in human umbilical vein endothelial cells (HUVECs). METHODS: We applied western blot (WB) analysis to investigate the effects of propofol on Ser(1177) phosphorylation-dependent eNOS activation in HUVECs...
May 2010: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/20337621/differential-effects-of-propofol-and-isoflurane-on-the-activation-of-t-helper-cells-in-lung-cancer-patients
#8
RANDOMIZED CONTROLLED TRIAL
X F Ren, W Z Li, F Y Meng, C F Lin
It is suggested that activation and differentiation of T-helper cells are required for peri-operative anti-tumor and anti-infection immunity. The present study aimed to evaluate whether propofol stimulates the activation and differentiation of these cells in patients undergoing pulmonary lobectomy for non-small-cell lung cancer. Thirty patients were randomly allocated to receive propofol or isoflurane throughout surgery. The CD4(+)CD28(+) percentage (p < 0.0001) and the ratio of interferon-gamma:interleukin-4 (p = 0...
May 2010: Anaesthesia
https://www.readbyqxmd.com/read/19951075/vaccines-using-dendritic-cells-differentiated-with-propofol-enhance-antitumor-immunity-in-mice
#9
Takefumi Inada, Kozue Kubo, Koh Shingu
Dendritic cell-based vaccines are useful for enhancing antitumor immunity. It has been suggested that propofol, an intravenous anesthetic, can enhance antitumor immunity in mice. We tested vaccine efficacy for eliciting antitumor immunity, using dendritic cells differentiated from bone marrow cells in the presence of propofol. Propofol-differentiated (but not control vehicle-differentiated) dendritic cells significantly delayed the growth of B16 melanoma in vivo. In vitro cytotoxic T cell activity was not affected by propofol...
2009: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/18218830/thiopental-protects-human-t-lymphocytes-from-apoptosis-in-vitro-via-the-expression-of-heat-shock-protein-70
#10
Martin Roesslein, David Schibilsky, Laurent Muller, Ulrich Goebel, Christian Schwer, Matjaz Humar, Rene Schmidt, Klaus K Geiger, Heike L Pahl, Benedikt H J Pannen, Torsten Loop
Barbiturates, which are used for the treatment of intracranial hypertension after severe head injury, have been associated with anti-inflammatory side effects. Although all barbiturates inhibit T-cell function, only thiobarbiturates markedly reduce the activation of the transcription factor nuclear factor-kappaB (NF-kappaB). Various pharmacologic inhibitors of the NF-kappaB pathway are concomitant nonthermal inducers of the heat shock response (HSR), a cellular defense system that is associated with protection of cells and organs...
April 2008: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/17699638/differential-effects-of-volatile-and-intravenous-anesthetics-on-the-activity-of-human-task-1
#11
C Putzke, P J Hanley, G Schlichthörl, R Preisig-Müller, S Rinné, M Anetseder, R Eckenhoff, C Berkowitz, T Vassiliou, H Wulf, L Eberhart
Volatile anesthetics have been shown to activate various two-pore (2P) domain K(+) (K(2P)) channels such as TASK-1 and TREK-1 (TWIK-related acid-sensitive K(+) channel), and mice deficient in these channels are resistant to halothane-induced anesthesia. Here, we investigated whether K(2P) channels were also potentially important targets of intravenous anesthetics. Whole cell patch-clamp techniques were used to determine the effects of the commonly used intravenous anesthetics etomidate and propofol on the acid-sensitive K(+) current in rat ventricular myocytes (which strongly express TASK-1) and selected human K(2P) channels expressed in Xenopus laevis oocytes...
October 2007: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/17621602/effects-of-propofol-and-desflurane-anaesthesia-on-the-alveolar-inflammatory-response-to-one-lung-ventilation
#12
RANDOMIZED CONTROLLED TRIAL
T Schilling, A Kozian, M Kretzschmar, C Huth, T Welte, F Bühling, G Hedenstierna, T Hachenberg
BACKGROUND: One-lung ventilation (OLV) induces a pro-inflammatory response including cytokine release and leucocyte recruitment in the ventilated lung. Whether volatile or i.v. anaesthetics differentially modulate the alveolar inflammatory response to OLV is unclear. METHODS: Thirty patients, ASA II or III, undergoing open thoracic surgery were randomized to receive either propofol 4 mg kg(-1) h(-1) (n = 15) or 1 MAC desflurane in air (n = 15) during thoracic surgery...
September 2007: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/12538378/differential-interaction-of-anaesthetics-and-antiepileptic-drugs-with-neuronal-na-channels-ca2-channels-and-gaba-a-receptors
#13
R Lingamaneni, H C Hemmings
BACKGROUND: Current theories favour multiple agent-specific neuronal actions for both general anaesthetics and antiepileptic drugs, but the pharmacological properties that distinguish them are poorly understood. We compared the interactions of representative agents from each class on their putative targets using well-characterized radioligand binding assays. METHODS: Synaptosomes or membranes prepared from rat cerebral cortex were used to analyse drug effects on [(35)S]t-butyl bicyclophosphorothionate ([(35)S]TBPS) binding to the picrotoxinin site of GABA(A) receptors, [(3)H]batrachotoxinin A 20-alpha benzoate ([(3)H]BTX-B) binding to site 2 of voltage-gated Na(+) channels, (+)-[methyl-(3)H]isopropyl 4-(2,1,3-benzoxadiazol-4-yl)-1,4-dihydro-5-methoxycarboxyl-2,6-dimethyl-3-pyridinecarboxylate ([(3)H]PN200-110; isradipine) binding to L-type Ca(2+) channels, and [cyclohexyl-2,3-(3)H](N)glibenclamide ([(3)H]GB) binding to K(ATP) channels...
February 2003: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/10860931/anticonvulsants-but-not-general-anesthetics-have-differential-blocking-effects-on-different-t-type-current-variants
#14
S M Todorovic, E Perez-Reyes, C J Lingle
The sensitivity to anticonvulsants and anesthetics of Ca(2+) currents arising from alpha1G and alpha1H subunits was examined in stably transfected HEK293 cells. For comparison, in some cases blocking effects on dorsal root ganglion (DRG) T currents were also examined under identical ionic conditions. The anticonvulsant, phenytoin, which partially blocks DRG T current, blocked alpha1G current completely but with weaker affinity ( approximately 140 microM). Among different cells, alpha1H current exhibited either of two responses to phenytoin...
July 2000: Molecular Pharmacology
https://www.readbyqxmd.com/read/9366470/ionic-basis-of-the-differential-effects-of-intravenous-anesthetics-on-erythromycin-induced-prolongation-of-ventricular-repolarization-in-the-guinea-pig-heart
#15
T E Morey, A E Martynyuk, C A Napolitano, M J Raatikainen, T S Guyton, D M Dennis
BACKGROUND: Dysrhythmias and death occur in patients with acquired long QT syndrome (LQTS). Little information exists regarding interactions between anesthetics and drugs that prolong ventricular repolarization. Therefore the effects of three commonly used intravenous anesthetics on ventricular repolarization were investigated in the setting of drug-induced, long QT syndrome. METHODS: The effects of increasing concentrations (0, 10, 25, and 50 microM) of propofol, ketamine, and thiopental on ventricular repolarization were evaluated by measuring the monophasic action potential duration at 90% repolarization (MAPD90) in guinea pig Langendorff-perfused hearts in the absence or presence of erythromycin (100 microM)...
November 1997: Anesthesiology
https://www.readbyqxmd.com/read/9135186/effects-of-propofol-emulsion-and-thiopentone-on-t-helper-cell-type-1-type-2-balance-in-vitro
#16
M Salo, C O Pirttikangas, K Pulkki
We have earlier found increased percentages of T helper cells (CD4-positive lymphocytes) in the blood circulation after propofol infusion anaesthesia. Cytokines interferon-gamma (IFN gamma) and interleukin-4 (IL-4) are important in the differentiation of T helper cells into subtypes T helper type-1 (Th1) and type-2 (Th2). To study the effects of propofol emulsion, its solvent Intralipid and thiopentone on Th1/Th2 balance, measurements of IFN gamma and IL-4 production by mononuclear leucocytes were carried out in vitro...
April 1997: Anaesthesia
https://www.readbyqxmd.com/read/8686816/propofol-infusion-anaesthesia-and-the-immune-response-in-elderly-patients-undergoing-ophthalmic-surgery
#17
RANDOMIZED CONTROLLED TRIAL
C O Pirttikangas, M Salo, O Peltola
In our earlier studies, propofol infusion anaesthesia increased the percentage of T helper cells in middle-aged surgical patients undergoing minor or major surgery. In the present study we compared the effects of total intravenous propofol anaesthesia and combined isoflurane anaesthesia on the immune response to ophthalmic surgery in elderly patients. Twenty patients (median age 75 years, ASA 2-3) were randomly allocated to receive total intravenous propofol anaesthesia (median total dose of propofol 710 mg) or combined isoflurane anaesthesia (median end-expiratory concentration of isoflurane 0...
April 1996: Anaesthesia
https://www.readbyqxmd.com/read/8546287/the-influence-of-anaesthetic-technique-upon-the-immune-response-to-hysterectomy-a-comparison-of-propofol-infusion-and-isoflurane
#18
RANDOMIZED CONTROLLED TRIAL
C O Pirttikangas, M Salo, M Mansikka, J Grönroos, K Pulkki, O Peltola
Earlier studies on propofol have shown increased percentages of T helper cells after minor surgery. In this study, the effects of propofol infusion anaesthesia on the immune response were compared with those of combined isoflurane anaesthesia in 30 patients (median age 47 years, ASA 1-2) undergoing major surgery. The total dose of propofol in the propofol infusion group of 15 women was 860 mg (range 540-1520 mg) and the median end-expiratory isoflurane concentration in the combined isoflurane group of 15 women was 0...
December 1995: Anaesthesia
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