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Dexmedetomidine AND immunity

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https://www.readbyqxmd.com/read/29042954/dexmedetomidine-ameliorates-the-inflammatory-immune-response-in-rats-with-acute-kidney-damage
#1
Weihua Liu, Wenli Yu, Yiqi Weng, Yongwang Wang, Mingwei Sheng
It has been demonstrated that dexmedetomidine (Dex) can protect patients with acute kidney injury from experiencing further tissue damage, however its mechanism of action remains unclear. The present study investigated the immune modulatory functions of Dex in rats with acute kidney injury (AKI) induced via injection of lipopolysaccharide into the tail vein. ELISA analysis showed that Dex reduced the levels of inflammatory cytokines in rats with AKI in a dose dependent manner. Furthermore, the regulatory effects of Dex on cytokine production disappeared when the α-2 adrenergic receptor antagonist Yohimbine (YOH) was added...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28968927/in-vivo-effects-of-dexmedetomidine-on-immune-function-and-tumor-growth-in-rats-with-ovarian-cancer-through-inhibiting-the-p38mapk-nf-%C3%AE%C2%BAb-signaling-pathway
#2
Qi-Hang Cai, Yao Tang, Shao-Hua Fan, Zi-Feng Zhang, Hong Li, Shao-Qiang Huang, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
OBJECTIVES: During this study, we aimed to analyze the correlation between dosages of dexmedetomidine (DEX) and the p38MAPK/NF-κB signaling pathway, and their effects on immune function and tumor growth in rats with ovarian cancer (OC). METHODS: A total of 100 rats were selected for the purposes of the study. The normal group consisted of 20 rats, while the remaining 80 rats were utilized for OC model establishment purposes, and further assigned into the model, 0...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28962135/postoperative-benefits-of-dexmedetomidine-combined-with-flurbiprofen-axetil-after-thyroid-surgery
#3
Xing-Dui Ma, Bei-Ping Li, De-Ling Wang, Wen-Sheng Yang
The present study determined the effect of dexmedetomidine (Dex) combined with flurbiprofen axetil (FA) on analgesia, immune response, and preservation of cognitive function in patients subjected to general anesthesia. We recruited 100 patients with thyroid surgery and randomly divided them into four groups: Dex (D), FA (F), Dex combined with FA (DF), and saline control (C). The extubation and recovery times for Groups D and DF were significantly longer than for Groups F and C. After extubation, the heart rate and mean arterial pressure for Groups F, D, and DF were significantly lower than for Group C, and data for Group DF was significantly lower than for Group F...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28928557/a-comparative-evaluation-of-intravenous-dexmedetomidine-and-fentanyl-in-breast-cancer-surgery-a-prospective-randomized-and-controlled-trial
#4
Sakshi Goyal, Kewal Krishan Gupta, Vikram Mahajan
BACKGROUND AND AIM: Recent studies have advised narcotic less anaestheic techniques for breast cancer surgeries due to altered immune system by use of opioids. So we planned this study to compare the efficacy of dexmedtomidine with fentanyl in breast cancer surgery in terms of haemodynamic stability, anaesthetic sparing effects, recovery profile and postoperative analgesia. MATERIAL AND METHODS: In this randomized prospective controlled trial, a total of 60 female patients were randomly assigned into two groups...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28829488/the-effect-of-dexmedetomidine-on-expressions-of-inflammatory-factors-in-patients-with-radical-resection-of-gastric-cancer
#5
W Dong, M-H Chen, Y-H Yang, X Zhang, M-J Huang, X-J Yang, H-Z Wang
OBJECTIVE: To investigate the effect of dexmedetomidine on the expressions of inflammatory factors, T-lymphocyte subgroups and nuclear factor kappa-B (NF-κB) in peripheral blood monocytes in the perioperative period of radical resection of gastric cancer. PATIENTS AND METHODS: We selected 74 patients who were admitted to our hospital for radical resection of gastric cancer between January 2012 and October 2015. All patients were randomly divided into the dexmedetomidine group and the control group...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28625441/the-protective-effects-of-dexmedetomidine-on-ischemic-brain-injury-a-meta-analysis
#6
REVIEW
Lianxiang Jiang, Meizhu Hu, Yan Lu, Ya Cao, Yan Chang, Zeping Dai
BACKGROUND: Intracranial lesions, trauma or surgery-related damage activate immune inflammation and neuroendocrine responses, causing ischemic brain injury. Studies have shown that inflammatory cascade mediated by neuroendocrine hormones and proinflammatory mediators is implicated in the pathophysiology of ischemic brain injury. Alpha2-adrenoceptor agonists, dexmedetomidine, is widely used as neuroprotectants in anesthesia practice. However, it is still lack of a comprehensive meta-analysis to evaluate the neuroprotection of dexmedetomidine against ischemic brain injury via suppressing these two physiological responses...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28387890/effects-of-propofol-and-dexmedetomidine-anesthesia-on-th1-th2-of-rat-spinal-cord-injury
#7
F-Y He, W-Z Feng, J Zhong, W Xu, H-Y Shao, Y-R Zhang
OBJECTIVE: Spinal cord injury (SCI) patients had major trauma during surgery, which thus necessitates optimal choice of anesthesia drugs. The specific selection of anesthesia agents may affect body immune system. Therefore, this study aims to investigate the anesthesia effect of propofol and dexmedetomidine on the rat SCI and their effects of Th1/Th2. MATERIALS AND METHODS: Improved ALLEN's pouching method was used to generate rat SCI model. The SCI rat models were further divided into propofol and dexmedetomidine group for analyzing anesthesia time, duration, post-op analgesia time, SCI sensory function Reuter score...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28338179/effect-of-dexmedetomidine-on-immune-function-of-patients-undergoing-radical-mastectomy-a-double-blind-and-placebo-control-study
#8
RANDOMIZED CONTROLLED TRIAL
X-H Yang, Q Bai, M-M Lv, H-G Fu, T-L Dong, Z Zhou
OBJECTIVE: To observe and evaluate the effect of dexmedetomidine on the perioperative immune function of patients undergoing a radical mastectomy. PATIENTS AND METHODS: 124 patients undergoing radical mastectomy were divided into the observation group (treated with dexmedetomidine) and the control group (treated with saline) by randomized digital table and double blinded and randomized design. 10 min before anesthesia induction, the patients in the observation group were injected with dexmedetomidine 0...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28247333/dexmedetomidine-regulates-6-hydroxydopamine-induced-microglial-polarization
#9
Pei Zhang, Yu Li, Xuechang Han, Qunzhi Xing, Lei Zhao
Microglia have undergone extensive characterization and have been shown to present distinct phenotypes, such as the M1 or M2 phenotypes, depending on their stimuli. As a highly specific neurotoxin, 6-hydroxydopamine (6-OHDA) can be used to further our understanding of the immune response in Parkinson's disease (PD). Dexmedetomidine (DEX), a centrally selective α2-adrenoceptor agonist, performs very well as an anti-anxiety medication, sedative and analgesic. In the present study, we investigated the effects of DEX on 6-OHDA-induced microglial polarization...
May 2017: Neurochemical Research
https://www.readbyqxmd.com/read/27356644/-clinical-application-of-different-sedation-regimen-in-patients-with-septic-shock
#10
RANDOMIZED CONTROLLED TRIAL
F Guo, Q Wang, C Y Yan, H Y Huang, X Yu, L Y Tu
OBJECTIVE: To evaluated the 3 sedation regimen for patients with septic shock. METHODS: The randomized controlled trial wan conducted. Forty-five patients with septic shock were assigned to 3 groups (midazolam group, propofol group, and dexmedetomidine group) randomly. The basic characteristics of patients, the duration of mechanical ventilation, the length of stay in the ICU, the death rate for 28 days and the regulatory cell (Treg) in peripheral blood were observed...
June 14, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27160623/-sedated-non-intubated-bilateral-thoracoscopic-sympathectomy-r3-r4
#11
José Manuel Mier-Odriozola
Non-intubated thoracic surgery entails procedures performed through regional anesthesia method in awake or mildly sedated, spontaneously ventilating patients. This method represents advantages for the cardiovascular system, and reduces the orotracheal trauma, postoperative atelectasis, and pneumonia. It also possibly reduces costs. Other theoretical advantages are: easier acceptance of surgery, attenuated stress hormone and immune response, and possibly a better survival in oncological surgery. We show a 34-year-old woman with sever palmar-axillary hyperhidrosis...
March 2016: Gaceta Médica de México
https://www.readbyqxmd.com/read/27054340/dexmedetomidine-inhibits-maturation-and-function-of-human-cord-blood-derived-dendritic-cells-by-interfering-with-synthesis-and-secretion-of-il-12-and-il-23
#12
Gong Chen, Yuan Le, Lei Zhou, Li Gong, Xiaoxiao Li, Yunli Li, Qin Liao, Kaiming Duan, Jianbin Tong, Wen Ouyang
AIMS: To investigate the effects and underlying mechanism of dexmedetomidine on the cultured human dendritic cells (DCs). METHODS: Human DCs and cytotoxic T lymphocytes (CTLs) were obtained from human cord blood mononuclear cells by density gradient centrifugation. Cultured DCs were divided into three groups: dexmedetomidine group, dexmedetomidine plus yohimbine (dexmedetomidine inhibitor) group and control group. DCs in the three groups were treated with dexmedetomidine, dexmedetomidine plus yohimbine and culture medium, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/26909786/dexmedetomidine-decreases-the-inflammatory-response-to-myocardial-surgery-under-mini-cardiopulmonary-bypass
#13
RANDOMIZED CONTROLLED TRIAL
N M H Bulow, E Colpo, R P Pereira, E F M Correa, E P Waczuk, M F Duarte, J B T Rocha
Cardiopulmonary bypass (CPB) with extracorporeal circulation produces changes in the immune system accompanied by an increase in proinflammatory cytokines and a decrease in anti-inflammatory cytokines. We hypothesize that dexmedetomidine (DEX) as an anesthetic adjuvant modulates the inflammatory response after coronary artery bypass graft surgery with mini-CPB. In a prospective, randomized, blind study, 12 patients (4 females and 8 males, age range 42-72) were assigned to DEX group and compared with a conventional total intravenous anesthesia (TIVA) group of 11 patients (4 females and 7 males)...
2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/25932229/effects-of-dexmedetomidine-on-cellular-immunity-of-perioperative-period-in-children-with-brain-neoplasms
#14
Lei Wu, Haoxuan Lv, Wenjie Luo, Shu Jin, Yannan Hang
OBJECTIVE: To study the effects of dexmedetomidine (Dex) on cellular immunity during the perioperative period in children with brain neoplasms. METHODS: Forty children with brain neoplasms scheduled for selective operation were recruited and divided randomly into two groups. The Dex group was given a loading dose of 1 μg*kg(-1) Dex 15 minutes before anesthesia induction followed by a continuous infusion of 0.5 μg × kg(-1) × h(-1) Dex. Patients in control group received a same volume of normal saline for a same time period...
2015: International Journal of Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/25813893/dexmedetomidine-and-regulation-of-splenic-sympathetic-nerve-discharge-in-aged-f344-rats
#15
R M McMurphy, R J Fels, M J Kenney
Sedatives influence the immune system and centrally-acting alpha2-adrenergic receptor agonists, including Dexmedetomidine (Dex), modulate sympathetic nerve discharge (SND). Because sedatives are used under medical conditions that include elderly patients, and because advancing age attenuates SND responsivity to various interventions, we tested the hypothesis that splenic sympathoinhibitory responses to Dex would be attenuated in aged compared with young Fischer 344 rats. Dex-mediated reductions in splenic SND were similar in aged and young baroreceptor-intact and -denervated rats, indicating that SND changes to Dex administration occur in an age-independent manner...
July 2015: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/25456116/effects-of-dexmedetomidine-on-patients-undergoing-radical-gastrectomy
#16
RANDOMIZED CONTROLLED TRIAL
Yulan Wang, Xuefeng Xu, Hong Liu, Fuhai Ji
BACKGROUND: Surgical stress may cause immunosuppression especially in patients who have surgery for primary tumor removed. This study aimed to explore the effects of dexmedetomidine on immune and inflammatory response in patients undergoing radical gastrectomy. METHODS: After the institutional review board approval and written informed consent, forty patients undergoing radical gastrectomy were equally randomized to receive dexmedetomidine infusion (Dex group; 0...
March 2015: Journal of Surgical Research
https://www.readbyqxmd.com/read/25317576/continuous-regional-anesthesia-and-inflammation-a-new-target
#17
REVIEW
I Grosu, P Lavand'homme
Inflammation can be defined as the host response when confronted with an aggression. The purpose of the inflammatory reaction is the defense of the host for re-establishing the baseline homeostasis of the organism. Compared to the neuroendocrine changes associated to the stress response to injury, the inflammatory reaction is the major determinant of patient's recovery in the perioperative period. Perioperative inflammation is involved in the occurrence of various postoperative adverse outcomes other than only acute pain...
September 2015: Minerva Anestesiologica
https://www.readbyqxmd.com/read/25069417/dexmedetomidine-suppresses-interleukin-1%C3%AE-induced-interleukin-6-synthesis-in-rat-glial-cells
#18
Kumiko Tanabe, Rie Matsushima-Nishiwaki, Osamu Kozawa, Hiroki Iida
Dexmedetomidine, an α2-adrenoceptor agonist, is used as a sedative medication for criticalyl ill patients and is known to exert neuroprotective effects by direct action on neurons and indirect action on neurons through astrocytes. Interleukin (IL)-6 plays a key role in neuroinflammation, which accompanies infection, traumatic brain injury, ischemia, neurodegenerative disorders, as both a pro-inflammatory cytokine and an anti-inflammatory cytokine. Dexmedetomidine suppresses immune function. However, the effects of dexmedetomidine on cytokine synthesis in the central nervous system (CNS) remain elusive...
October 2014: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/24910415/different-cellular-responses-of-dexmedetomidine-at-infected-site-and-peripheral-blood-of-emdotoxemic-balb-c-mice
#19
Rick Sai-Chuen Wu, King-Chuen Wu, Chiu-Chen Huang, Yi-Ying Chiang, Chia-Chen Chen, Ching-Lung Liao, Chin-Nan Chu, Jing-Gung Chung
Various sedative agents, including dexmedetomidine (dex), induce immunosuppression, and enhance infection progression. However, there was no information on how anesthetic affects local and systemic cellular immune function. We conducted this study to examine the impact of dex on the differentiation and function of immune cells at site of inflammation and in peripheral blood during endotoxemia of mice. In BALB/c mice with and without endotoxemia, we evaluated the influence of two dosages of 5 and 50 mcg/kg/h intravenous dex on immune cells: including number of T cells (CD3), B cells (CD19), natural killer cells (CD8a), monocytes (CD11b), and macrophages (Mac-3) in peripheral blood, the activities of macrophages in peripheral blood and in peritoneal lavage, and proliferation of B and T cells and of natural killer cells activity in the spleen...
December 2015: Environmental Toxicology
https://www.readbyqxmd.com/read/24656574/dexmedetomidine-and-regulation-of-splenic-sympathetic-nerve-discharge
#20
M J Kenney, B T Larsen, R M McMurphy, D Mason, R J Fels
Recent lines of inquiry indicate that sedatives can influence the immune system, leading to the concept of sedative-induced immunomodulation. It has been hypothesized that sedatives may alter immune responses by modulating the sympathetic nervous system, however, little information is known regarding the effects of sedatives on regulation of splenic sympathetic nerve discharge (SND), a significant omission based on the functional role that changes in splenic SND exert on splenic cytokine gene expression. The present investigation determined the effect of systemic Dexmedetomidine (Dex) administration on the level of directly-recorded splenic SND and tested the hypothesis that the intravenous administration of Dex would inhibit splenic SND in anesthetized rats...
July 2014: Autonomic Neuroscience: Basic & Clinical
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