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1.
Article in Chinese | WPRIM | ID: wpr-933310

ABSTRACT

Objective:To evaluate the effects of the alpha-lipoic acid on hepatic ischemia/reperfusion (I/R) injury and the role of (ALDH2).Methods:This experiment was performed in two parts in vivo and in vitro experiments. In vivo experiment Twenty-four male Sprague-Dawley rats, aged 8-10 weeks, weighing 250-300 g, were divided into 4 groups ( n=6 each) by the random number table method: sham operation group (Sham group), hepatic I/R group (IR group), and hepatic I/R plus α-lipoic acid group (IR+ ALA group) and hepatic I/R+ α-lipoic acid+ daidzin group (IR+ ALA+ D group). Hepatic I/R was induced by occlusion of the left and middle hepatic lobes for 60 min, followed by 6 h of reperfusion in anesthetized rats.In IR+ ALA+ D group, ALDH2 inhibitor daidzin 50 mg/kg was intraperitoneally injected at 45 min before ischemia.Alpha-lipoic acid 100 mg/kg was intraperitoneally injected at 30 min before ischemia in IR+ ALA group and IR+ ALA+ D group.Blood samples from the inferior vena cava were collected at the end of reperfusion to determine serum AST and ALT activities.Then the rats were sacrificed, and livers were removed for microscopic examination of pathological changes of the lung tissues which were scored and for determination of ALDH2 activity, level of reactive oxygen species (ROS) and expression of 4-hydroxy-trans-2-nonenal (4-HNE) and malondialdehyde (MDA) (by immuno-histochemistry). In vitro experiment Rat BRL-3A hepatocytes cultured in vitro were divided into 4 groups ( n=15 each) by the random number table method: control group (C group), hypoxia-reoxygenation group (HR group), hypoxia-reoxygenation+ α-lipoic acid group (HR+ ALA group) and hypoxia-reoxygenation+ α-lipoic acid+ daidzin group (HR+ ALA+ D group). BRL-3A hepatocytes were exposed to 95% N 2-5% CO 2 in an incubator at 37 ℃ for 6 h followed by reoxygenation with 95% O 2-5% CO 2 for 24 h. At 60 min before hypoxia, alpha-lipoic acid 100 μmol/L was addded in HR+ ALA group, and alpha-lipoic acid 100 μmol/L and daidzin 60 μmol/L were added in HR+ ALA+ D group.At 24 h of reoxygenation, cell viability was measured by CCK-8 method, ALDH2 activity was determined by spectrophotometry, ROS level was detected by DCFH-DA fluorescent probe method, and mitochondrial membrane potential (MMP) was measured by JC-1 method. Results:In vivo experiment Compared with Sham group, the serum AST and ALT activities, liver injury score, level of ROS in liver tissues and expression of 4-HNE and MDA were significantly increased ( P<0.05), and no significant change was found in ALDH2 activity in IR group ( P>0.05). Compared with IR group, the serum AST and ALT activities, liver injury score, level of ROS in liver tissues and expression of 4-HNE and MDA were significantly decreased, and the ALDH2 activity was increased in IR+ ALA group ( P<0.05). Compared with IR+ ALA group, the serum AST and ALT activities, liver injury score, level of ROS in liver tissues and expression of 4-HNE and MDA were significantly increased, and the ALDH2 activity was decreased in HR+ ALA+ D group ( P<0.05). In vitro experiment Compared with C group, the cell viability and MMP were significantly decreased, and the level of ROS was increased ( P<0.05), and no significant change was found in the activity of ALDH2 in HR group ( P>0.05). Compared with HR group, the cell viability, ALDH2 activity and MMP were significantly increased, and the level of ROS was decreased in HR+ ALA group ( P<0.05). Compared with HR+ ALA group, the cell viability, ALDH2 activity and MMP were significantly decreased, and the level of ROS was increased in HR+ ALA+ D group ( P<0.05). Conclusions:Alpha-lipoic acid can reduce hepatic I/R injury in rats, and the mechanism is related to activation of ALDH2, reduction of accumulation of toxic aldehyde and restoration of MMP.

2.
Article in Chinese | WPRIM | ID: wpr-923508

ABSTRACT

@#Objective To evaluate the effects of spinal manipulation therapy (SMT) on chronic nonspecific neck pain (CNSNP) by using World Health Organization Family International Classifications (WHO-FICs). Methods Randomized controlled trials (RCTs) about the effects of SMT on CNSNP were searched from PubMed, Web of Science, Cochrane Library, EMBASE, EBSCO, CBM and CNKI from database establishment to December 31st, 2021. At least two researchers extracted the data. Cochrane bias risk assessment tool and Physiotherapy Evidence Database Scale were used to evaluate the quality of the included articles. Revman 5.4 software and Stata 16.0 software were used for meta-analyses and publication bias analysis respectively. Results A total of 15 RCTs that represented 1 067 participants were evaluated. In terms of body functions, compared with the control group, SMT significantly reduced Visual Analog Score for pain (MD = -0.85, 95%CI -1.06 to -0.63, P < 0.00001) and Numerical Rating Scale (MD = -0.92, 95%CI -1.29 to -0.55, P < 0.001), increased pressure pain thresholds (SMD = 0.67, 95%CI 0.47 to 0.86, P < 0.001), cervical range of motion (ROM) of flexion/extension (SMD = 0.51, 95%CI 0.33 to 0.68, P < 0.001) and rotation (SMD = 0.20, 95%CI 0.01 to 0.38, P = 0.04), improved root mean square of cervical muscles electromygraphy (MD = 2.17, 95%CI 0.06 to 4.29, P = 0.04), but not significantly in cervical ROM of lateral flexion (SMD = 0.19, 95%CI -0.00 to 0.38, P = 0.06), cervical strength (SMD = -0.18, 95%CI -0.84 to 0.49, P = 0.60) and endurance (SMD = 0.18, 95%CI -0.39 to 0.75, P = 0.53). In term of activities and participation, SMT significantly improved cervical disability (MD = -0.96, 95%CI -1.55 to -0.38, P = 0.001), but not significantly in health status of patients with CNSNP (SMD = 0.08, 95%CI -0.03 to 0.20, P = 0.15). Conclusion SMT could improve pain intensity, pain sensitivity, cervical ROM and disability in patients with CNSNP, but its efficacy on muscle function, proprioception and health status is unclear.

3.
Article in English | WPRIM | ID: wpr-903978

ABSTRACT

Apoptosis is proved responsible for renal damage during ischemia/reperfusion. The regulation for renal apoptosis induced by ischemia/reperfusion injury (IRI) has still been unclearly characterized to date. In the present study, we investigated the regulation of histone acetylation on IRI-induced renal apoptosis and the molecular mechanisms in rats with the application of curcumin possessing a variety of biological activities involving inhibition of apoptosis. Sprague–Dawley rats were randomized into four experimental groups (SHAM, IRI, curcumin, SP600125). Results showed that curcumin significantly decreased renal apoptosis and caspase-3/-9 expression and enhanced renal function in IRI rats. Treatment with curcumin in IRI rats also led to the decrease in expression of p300/cyclic AMP response element-binding protein (CBP) and activity of histone acetyltransferases (HATs). Reduced histone H3 lysine 9 (H3K9) acetylation was found near the promoter region of caspase-3/-9 after curcumin treatment. In a similar way, SP600125, an inhibitor of c-Jun N-terminal kinase (JNK), also attenuated renal apoptosis and enhanced renal function in IRI rats. In addition, SP600125 suppressed the binding level of p300/CBP and H3K9 acetylation near the promoter region of caspase-3/-9, and curcumin could inhibit JNK phosphorylation like SP600125. These results indicate that curcumin could attenuate renal IRI via JNK/p300/CBP-mediated anti-apoptosis signaling.

4.
Article in English | WPRIM | ID: wpr-896274

ABSTRACT

Apoptosis is proved responsible for renal damage during ischemia/reperfusion. The regulation for renal apoptosis induced by ischemia/reperfusion injury (IRI) has still been unclearly characterized to date. In the present study, we investigated the regulation of histone acetylation on IRI-induced renal apoptosis and the molecular mechanisms in rats with the application of curcumin possessing a variety of biological activities involving inhibition of apoptosis. Sprague–Dawley rats were randomized into four experimental groups (SHAM, IRI, curcumin, SP600125). Results showed that curcumin significantly decreased renal apoptosis and caspase-3/-9 expression and enhanced renal function in IRI rats. Treatment with curcumin in IRI rats also led to the decrease in expression of p300/cyclic AMP response element-binding protein (CBP) and activity of histone acetyltransferases (HATs). Reduced histone H3 lysine 9 (H3K9) acetylation was found near the promoter region of caspase-3/-9 after curcumin treatment. In a similar way, SP600125, an inhibitor of c-Jun N-terminal kinase (JNK), also attenuated renal apoptosis and enhanced renal function in IRI rats. In addition, SP600125 suppressed the binding level of p300/CBP and H3K9 acetylation near the promoter region of caspase-3/-9, and curcumin could inhibit JNK phosphorylation like SP600125. These results indicate that curcumin could attenuate renal IRI via JNK/p300/CBP-mediated anti-apoptosis signaling.

5.
Chinese Journal of Digestion ; (12): 402-409, 2021.
Article in Chinese | WPRIM | ID: wpr-912200

ABSTRACT

Objective:To investigate the effects of Clostridium butyricum on colitis and intestinal microbiota in mice with or without antibiotic pretreatment. Methods:Thirty specific pathogen free BALB/c mice were randomly divided into the blank control group, dextran sulfate sodium (DSS) group, antibiotic + DSS group, Clostridium butyricum + DSS group and antibiotic+ Clostridium butyricum + DSS group, with 6 mice in each group. After the mice were pretreated with quadruple antibiotics (ampicillin 1 g/L, neomycin 1 g/L, metronidazole 1 g/L, and vancomycin 0.5 g/L) in normal drinking water for 30 d, the mice colitis model was induced with DSS. At the same time, the mice in Clostridium butyricum + DSS group and antibiotics+ Clostridium butyricum + DSS group were given 1×10 6colony-forming unit (CFU) Clostridium butyricum by gavage. The effect of Clostridium butyricum on mice with colitis was evaluated by disease activity index (DAI), colon length and histopathological score. The level of serum inflammatory factors was detected by enxyme linked immunosorbent assay, and the effect of Clostridium butyricum on gut microbita in mice was determined by fecal 16S rRNA sequencing. Results:The general condition of mice of the blank control group were good, and their DAI scores fluctuated around 0. Since the fourth day after DSS drinking water was given, the mice of the DSS group showed signs of colitis such as weight loss, unformed stools and bloody stools. On the fourth day after intervention, the DAI score of Clostridium butyricum + DSS group was lower than that of DSS group (0.000±0.000 vs. 0.444±0.111), and the difference was statistically significant ( t=4.000, P=0.016 1). On the tenth and twelfth day after the intervention, the DAI scores of antibiotic+ Clostridium butyricum + DSS group were both lower than those of antibiotic+ DSS group (0.000±0.000 vs. 1.111±0.222, 0.667±0.000 vs. 1.889±0.222), and the differences were statistically significant ( t=5.000 and 5.500, both P<0.05). The histopathological score of mice colon tissue of Clostridium butyricum + DSS group was lower than that of DSS group (2.50±1.73 vs. 5.50±1.00), and the histopathological score of mice colon tissue of antibiotic+ Clostridium butyricum+ DSS group was lower than that of antibiotic+ DSS group (1.25±0.96 vs. 5.00±0.82), and the differences were statistically significant ( t=3.000 and 5.960, both P<0.05). The serum level of interleukin (IL)-1β Clostridium butyricum+ DSS group was higher than that of blank control group ((4.464±0.075) ng/L vs. (3.907±0.080) ng/L), the serum levels of tumor necrosis factor-α, IL-6 and IL-1β of Clostridium butyricum+ DSS group and antibiotic+ Clostridium butyricum + DSS group were all lower than those of DSS group ((2.402±0.383) ng/L , (1.845±0.345) ng/L vs. (6.958±1.084) ng/L, (1.752±0.146) ng/L, (1.307±0.048) ng/L vs. (3.537±0.608) ng/L, (4.464±0.075) ng/L, (4.066±0.190) ng/L vs. (7.477±0.339) ng/L), and the differences were statistically significant ( t=5.005, 3.964, 4.495, 4.693, 6.294, 8.674 and 8.774 , all P<0.05). The results of 16S rRNA sequencing showed that there were a significantly large number of anti-inflammatory or short-chain fatty acid producing bacteria in the gut microbiota of mice intervened by Clostridium butyricum, among which the dominant bacteria genus in Clostridium butyricum + DSS group and antibiotic+ Colstridium butyicum+ DSS group were Mucispirillum (linear discriminant analysis (LDA)=3.667 log10, P=0.004) and Stenotrophomonas (LDA=2.778 log10, P=0.044). In the antibiotic+ Clostridium butyricum+ DSS group, the dominant bacteria genus were Peptococcus (LDA=2.685 log10, P=0.018), Butyricimonas (LDA=2.712 log10, P=0.011), Bilophila (LDA=3.204 log10, P=0.014), Intestinimonas (LDA=3.346 log10, P=0.010), Candidatus- Saccharimonas (LDA=3.363 log10, P=0.029), Desulfovibrio (LDA=3.402 log10, P=0.025), Oscillibacter (LDA=2.870 log10, P=0.019) and Akkermansia (LDA=4.031 log10, P=0.005). Conclusions:Clostridium butyricum can effectively improve colitis in mice and regulate the intestinal microbial structure of mice, whlie antibiotic pretreatment can strengthen its regulation of intestinal microbiota to and enhance the efficacy of Clostridium butyricum.

6.
Article in Chinese | WPRIM | ID: wpr-864485

ABSTRACT

This paper reviews the literature about the common complications, evaluation tools and intervention measures of free flap repair for tongue cancer patients at home and abroad, summarizes the current research status, and points out that the nursing plan of free flap repair for tongue cancer patients needs to be further standardized, and needs to carry out evidence-based clinical research.

7.
Article in Chinese | WPRIM | ID: wpr-869825

ABSTRACT

Objective:To evaluate the effect of general anesthesia on microelectrode recording (MER) during deep brain stimulation (DBS) of subthalamic nucleus (STN) in the patients with primary Parkinson′s disease (PD).Methods:Forty-four patients of both sexes with primary PD (duration of disease ≥ 5 yr and/or obvious symptom fluctuation), undergoing bilateral STN DBS from March 2008 to March 2018, aged<80 yr, were selected and divided into 2 groups by a random number table method: awake group ( n=26) and general anesthesia group ( n=18). In awake group, 0.5% ropivacaine was used for incision infiltration at skin incision.Patients in GA group received propofol and remifentanil by target-controlled infusion with Narcotrend to monitor the depth of anesthesia, and 0.5% ropivacaine was used for incision infiltration at skin incision.The total number of trajectories and length of STN were recorded during MER.Movement disorders were evaluated at 1 week before surgery and 6 months after surgery, and the improvement rate of dyskinesia was calculated.The postoperative anesthesia-, hardware- and stimulation-related complications were recorded. Results:There were no significant differences between the two groups in the total number of trajectories, length of STN and improvement rate of postoperative movement disorders ( P>0.05). Conclusion:General anesthesia does not affect the MER during STN DBS in the patients with primary PD.

8.
Chinese Journal of Anesthesiology ; (12): 1077-1081, 2018.
Article in Chinese | WPRIM | ID: wpr-734625

ABSTRACT

Objective To evaluate the effect of intelligentized patient-controlled analgesia ( PCA) management on the quality of postoperative analgesia in the patients. Methods A total of 6601 patients who underwent postoperative PCA from January 1, 2015 to December 31, 2017 searched from the intelli-gentized PCA system database were selected as intelligentized PCA management group ( I group) , and then were divided into 3 subgroups according to the year: 2015 subgroup ( n=2221 ) , 2016 subgroup ( n=2152) and 2017 subgroup (n=2228). A total of 1235 patients who underwent PCA which was mainly performed by a department of anesthesiology in the postoperative analgesia-related multi-center questionnaire from April 11, 2016 to April 22, 2016 in 12 grade A tertiary hospitals in Guangdong Province were select-ed as the traditional PCA management group (C group). The development of moderate and severe pain, nausea and vomiting, over-sedation at rest and during activity and patient′s satisfaction were recorded on 1st and 2nd days after operation. Results Compared with C group, the incidence of moderate and severe pain, nausea and vomiting and over-sedation at rest and during activity was significantly decreased, and the rate of patient′s satisfaction was increased at each time point after operation in I group ( P<0. 05 or 0. 01) . Com-pared with 2015 subgroup, the incidence of moderate and severe pain at rest and severe pain during activity was significantly decreased in 2016 and 2017 subgroups ( P<0. 05 or 0. 01) , and the incidence of nausea and vomiting was significantly increased in 2017 subgroup ( P<0. 05) . Compared with 2016 subgroup, the incidence of nausea and vomiting was significantly increased in 2017 subgroup (P<0. 05). Conclusion Intelligentized PCA management can improve the efficacy of PCA, mitigates the occurrence of adverse reac-tions and raise the quality of postoperative analgesia in the patients.

9.
Article in Chinese | WPRIM | ID: wpr-706456

ABSTRACT

Purpose To discuss the value of phase III CT angiography (CTA) and ultrasound in evaluating the preoperative vascular anatomical variation and the lumen patency of the patients with liver transplantation. Materials and Methods The clinical and imaging data of 126 patients with liver transplantation in the First Affiliated Hospital of Zhengzhou University were collected. CT scan in arterial phase, portal venous phase, venous phase and CTAreconstruction and ultrasound examination were performed before surgery. CTA images included volume rendering (VR), maximum intensity projection (MIP), curve plane reformation (CPR), and multi-plane reformation (MPR). The anatomical variations and lumen patency of the hepatic artery, the portal vein system, the hepatic vein and the inferior vena cava were observed. The accuracy of CTA and ultrasound of the evaluation of blood vessels in patients with liver transplantation was compared with the criteria of intraoperative exploration and postoperative pathological results. Results Among 126 patients with liver transplantation, all the hepatic artery lumen was unobstructed, with 98 cases of normal anatomical structure and 28 cases (22.2%) of anatomical variation, including Michel type II 7.1% (9/126), type III 6.3% (8/126), type IV 3.2% (4/126), type V 2.4% (3/126), type VI 0.8% (1/126); 2.4%(3/126) of Michel classification was not included. The diagnostic accuracy of CTA for arterial anatomical variations was 100.0%, and the patency diagnosis of the lumen was consistent with the operation, and the anatomical variation cannot be evaluated. In 126 patients, there were 94 cases of portal vein patency, and 32 cases of portal vein embolus, including 21 cases with thrombus and 11 cases with tumor embolus. The diagnostic accuracy of CTA and ultrasound for portal vein embolus was 93.7% and 96.0%, respectively; and there was no statistical significance (P>0.05). The diagnostic accuracy of them for thrombosis was 96.0% and 91.3%, respectively; and there was statistical significance (P<0.05). The diagnostic accuracy of them for the tumor thrombus was 97.6% and 92.1%, respectively; and there was statistical significance (P<0.05), CTA could show the collateral circulation around the portal vein. The diagnostic accuracy of CTA and ultrasound for venous patency was both 99.3%. The diagnostic accuracy of CTA and ultrasound for the anatomy of hepatic venous trunk was 99.2% and 95.2%, respectively; and there was no statistical significance (P>0.05). Conclusion CTA can accurately evaluate the hepatic artery variation of liver transplantation. It has a high accuracy rate for the qualitative diagnosis of portal vein emboli, and can display collateral circulation. Its overall preoperative diagnostic value is better than that of ultrasound.

10.
Article in Chinese | WPRIM | ID: wpr-506906

ABSTRACT

Objective]To investigate the change of spinal pro?inflammatory cytokines in a rat model of fentanyl induced acute hyperalgesia.[Methods]64 male SD rats were divided into 2 groups(n=32),fentanyl group and NS group. The rats were subcutaneously injected with fentanyl (60 μg/kg) or normal saline (1.2 mL/kg) 4 times with 15?minute intervals. Mechanical nociceptive thresholds and thermal nociceptive latency were measured via the tail pressure test(Tail flick thresholds,TFT) and paw withdrawal test(Paw withdrawal latency,PWL)on the day before,at 1,2,3,and 4 hour and on 1~5 day after injection. 4 rats were killed concomitantly and the lumber spinal cord were harvested to analysis the expression of NF-κB,PGE2,TNF-α,IL-1β,and IL-6.[Results]There were no significant changes of TFT,PWL and the expression of spinal inflammatory cytokines such as NF-κB, PGE2,IL-1β,and TNF-αcompared to baseline of rats treated with normal saline. The value of TFT ,PWL in fentanyl group raised to the highest(above the baseline)at the 1st hour after fentanyl injections and decreased thereafter,reached the lowest at the 1st day, raised increasinglyand up to baseline on the 3 day after injection. NF-κB,PGE2,IL-1β,and TNF-αincreased at the 4th hour,on 1 and 2 day and IL-6 increased at the 4 hour and onthe 1 day after fentanyl injections.[Conclusion]Subcutaneously injection of fentanyl induced significant mechanical and thermal hyperalgesia and increased spinal pro?inflammatory cytokines parallelly , indicated that fentanyl induced acute hyperalgesia is associated with spinal inflammatory reaction in rats.

11.
The Journal of Practical Medicine ; (24): 1912-1915, 2016.
Article in Chinese | WPRIM | ID: wpr-494499

ABSTRACT

Objective To investigate the expression of pro-inflammatory cytokines in lumbar dorsal root ganglions (DRG) of rats model of high-dose fentanyl induced hyperalgesia. Methods 64 male SD rats were divided into 2 groups (n = 32), fentanyl group and normal saline (NS) group. The rats were injected with fentanyl (60 μg/kg) or NS 4 times in total subcutaneously with a 15-minute interval. Mechanical and thermal nociception were measured via the tail pressure test (tail flick thresholds, TFT) and paw withdrawal test (paw withdrawal latency, PWL) at 1 day before, at 1, 2, 3 and 4 hour and on 1 ~ 7 day after administration. 4 rats were sacrificed and the lumbar DRG were harvested to analyze the expression of PGE2 , IL-1β, IL-6 and TNF-αvia ELISA. Results There were no significant changes of TFT, PWL and the expression of pro-inflammatory cytokines in DRG compared to baseline of rats in NS group. The value of TFT , PWL in fentanyl group were above the baseline at the 1 ~ 4 hour and below the baseline at 1~3 day after fentanyl injections. PGE2 , IL-1β, TNF-α and IL-6 increased on 1,3,5,7 day after fentanyl injections significantly. Conclusions High-dose fentanyl induced significant hyperalgesia and up-regulation of pro-inflammatory cytokines in DRG. The expression pro-inflammatory cytokines peaked later and were more protracted than the change of behavior test and show no direct relationship between the two.

12.
Article in Chinese | WPRIM | ID: wpr-489343

ABSTRACT

Objective To investigate the effects of propofol on brain injury induced by intestinal ischemia-reperfusion (I/R) in rats.Methods Forty-eight adult male Sprague-Dawley rats,weighing 250-300 g,were randomly allocated to one of 3 groups (n =16 each) using a random number table:sham operation group (group Sham),I/R group,and propofol group (group P).Intestinal I/R was produced by occlusion of the superior mesenteric artery for 90 min followed by reperfusion.In group P,propofol 50 mg/kg was injected intraperitoneally at 30 min before reperfusion,and the equal volume of fat emulsion was given in the other two groups.Blood samples were collected at 24 h of reperfusion for determination of serum tumor necrosis factor-alpha (TNF-α) and interleukin-1beta (IL-1β) concentrations.The cerebral cortex and hippocampus were isolated for measurement of TNF-α and IL-1β mRNA expression (by real-time reverse transcriptase-polymerase chain reaction) and myeloperoxidase (MPO) activity (using colorimetric method).Morris water maze test was carried out at 1,3 and 5 days of reperfusion.Results Compared with group Sham,the serum TNF-α and IL-1β concentrations were significantly increased,the expression of TNF-o and IL-1β mRNA in the cerebral cortex and hippocampus was up-regulated,the MPO activity was increased,and the escape latency was prolonged,and the frequency of crossing the original platform was decreased during reperfusion in group I/R (P<0.05).In group I/R,the concentrations of serum TNF-αand IL-1β were significantly decreased,thc cxpression of TNF-α and IL-1β mRNA in the cerebral cortex and hippocampus was down-regulated,and the escape latency was shortened,and the frequency of crossing the original platform was increased during reperfusion (P<0.05),and no significant change was found in MPO activity in group P (P>0.05).Conclusion Propofol reduces brain injury induced by intestinal I/R through inhibiting systemic and local inflammatory responses in rats.

13.
Article in Chinese | WPRIM | ID: wpr-489341

ABSTRACT

Objective To evaluate the role of nicotinamide adenine dinucleotide phosphate hydrogen (NADPH) oxidase in bupivacaine-induced injury to neurons.Methods SH-SY5Y cells were seeded in 96-well culture plates at a density of 5× 104 cells/well and randomly divided into 3 groups (n=24each) using a random number table:control group (group C),bupivacaine group (group B),and apocynin (NADPH oxidase inhibitor) + bupivacaine group (group A+B).The cells were cultured in a serum-free medium in group C.The cells were cultured in a serum-free medium containing 1 mmol/L bupivacaine in group B.In group A + B,the cells were cultured for 30 min in a serum-free medium containing apocynin 100 μmol/L,and then cultured in a serum-free medium containing 1 mmol/L bupivacaine.At 2,4 and 6 h of incubation,the cells in 6 wells of each group were selected to evaluate the cell viability by MTS assay.At 4 h of incubation,the cells in 6 wells of each group were selected to detect reactive oxygen species (ROS) level by flow cytometry.Results Compared with group C,the cell viability was significantly decreased at 4 and 6 h of incubation,and the production of ROS was increased at 4 h of incubation in group B (P< 0.05).Compared with group B,the cell viability was significantly increased at 4 and 6 h of incubation,and the production of ROS was decreased at 4 h of incubation in group B (P<0.05).Conclusion NADPH oxidase is involved in bupivacaine-induced injury to neurons.

14.
Article in Chinese | WPRIM | ID: wpr-467253

ABSTRACT

BACKGROUND:Because of convenient source, multi-lineage differentiation and low immunogenicity, bone marrow mesenchymal stem cels are the ideal cel type to serve as vectors of transgenic cels in pain management. However, the replicative senescence and smal amount of cels obtained from the bone marrow restrict the application of bone marrow mesenchymal stem cels in pain research. OBJECTIVE:To construct human telomerase reverse transcriptase (hTERT)-immortalized rat bone marrow mesenchymal stem cels as transgenic celular vectors for pain therapy. METHODS:Bone marrow mesenchymal stem cels were obtained from whole rat bone marrow, and then transfected with a lentivirus containing the hTERT (pLV-Puro-EF1α-hTERT) folowed by puromycin selection. hTERT expression and telomerase activity in these transfected cels were determined by RT-PCR and TRAP. Morphological changes, capacity of cel growth and multi-lineage differentiation, chromosome karyotype and tumorigenicity were observed in vitro. Moreover, the expression of cel surface molecule, Nestin, MHC-I and MHC-II in transfected cels were also detected by flow cytometry and immunocytochemistry. RESULTS AND CONCLUSION: The bone marrow mesenchymal stem cels geneticaly modified by hTERT could be cultured and passaged through 30 generations in vitro. Compared to the primary and negative transfected cels, the hTERT-modified bone marrow mesenchymal stem cels showed higher expression of hTERT mRNA, telomerase activity and cel proliferation. Most of transfected cels stayed at G2/M and S stages. The proliferation index of the transfected cels were increased dramaticaly. The positive rates of CD29, CD44 and CD90 were over 70%, but the positive rates of CD34 and CD45 were less than 5%. Transfected cels were positive for Nestin in the cytoplasm, but negative for MHC-1 and MHC-11. In addition, this cel line continued to exhibit the characteristics of fibroblastic bone marrow mesenchymal stem cels, including phenotype, differentiation into osteoblasts, adipocytes and neuron-like cels. No chromosome abnormality and tumor formation were observed in this experiment. Taken together, these data suggests that the rat bone marrow mesenchymal stem cels immortalized by hTERT gene are constructed successfuly and stil maintain major stem cels characteristics, which provide safe and stable cel vectors as research base for pain therapy.

15.
Chinese Journal of Anesthesiology ; (12): 1071-1074, 2015.
Article in Chinese | WPRIM | ID: wpr-483315

ABSTRACT

Objective To evaluate the effect of docosahexaenoic acid (DHA) on hepatic ischemia-reperfusion (I/R) injury in rats.Methods Fifteen male Sprague-Dawley rats, aged 8-10 weeks, weighing 250-300 g, were randomly divided into 3 groups (n =5 each) using a random number table: sham operation group (group S), hepatic I/R group (group I/R) , and group DHA.Hepatic I/R was induced by clamping the hepatic pedicle supplying the left and middle lobes of the liver for 60 min, followed by 24 h reperfusion in anesthetized rats.DHA 4 mg/kg was injected intravenously at 30 min before ischemia and 10 min of reperfusion in group DHA.The equal volume of solvent was given instead in S and I/R groups.Blood samples were taken from the inferior vena cava at 24 h of reperfusion for determination of serum alanine aminotransferase (ALT), and aspartate aminotransferase (AST) activities, and resolvin D1 concentrations.The rats were then sacrificed, and the livers were removed for determination of myeloperoxidase (MPO) activity (by spectrophotometry), and interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) mRNA expression (by quantitative real-time reverse transcriptase polymerase chain reaction).The livers were cut into sections which were stained with haematoxylin and eosin, and examined under light microscope.Results Compared to group S, the serum ALT and AST activities, serum resolvin D1 concentrations, and MPO activity, and IL-6 and TNF-α mRNA expression in liver tissues were significantly increased in I/R and DHA groups (P<0.05).Compared to group Ⅰ/R, the serum resolvin 1D1 concentrations, and MPO activity and TNF-α mRNA expression in liver tissues were significantly decreased (P<0.05) , and no significant difference was found in the serum ALT and AST activities in group DHA (P>0.05).There was no significant difference in pathological changes of the liver between group DHA and group I/R.Conclusion DHA can attenuate inflammatory responses during hepatic I/R, but it is not sufficient to mitigate liver injury in rats.

16.
Article in Chinese | WPRIM | ID: wpr-460614

ABSTRACT

Objective To investigate the inhibitant effects of parecoxib, a cyclooxygenase-2 (COX-2) inhibitor, in acute fentanyl induced hyperalgesia in rats. Methods (1) Thirty SD rats (n=6 for each group) were subcutaneously injected with fentanyl (40 μg/kg × 4 times with a 15 min-interval) or saline to establish acute fentanyl induced hyperalgesia model, andparecoxib (5, 10 mg/kg) was administrated intraperitoneally in parecoxib group. Mechanical nociceptive thresholds were measured by the tail pressure test every hour during 1~4 hours and once a day during 1~5 days. (2) 24 SD rats (n = 6 foreach group) were subcutaneously injected with fentanyl as above described and randomly administrated intraperitoneally with parecoxib in 10 mg/kg in 15 min before and at the 4th hour and the 1st day after fentanyl injection except rats in the control group, mechanical nociceptive thresholds were measured by the tail pressure test at time points as above described. Results (1)Acute high dose fentanyl injection induced mechanical hyperalgesia and parecoxib (at 5 or 10 mg/kg)inhibited fentanyl induced hyperalgesia in rats. (2)Parecoxib inhibited fentanyl induced hyperalgesia at 15 min before and at the 4th hour after, but not on the 1st day after fentanyl injection. Conclusions This study provides the first evidence that subanalgesia doses of parecoxib had inhibitory effects on acute fentanyl induced hyperalgesia in time-dependent manners in rats.

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Chinese Journal of Anesthesiology ; (12): 1300-1302, 2014.
Article in Chinese | WPRIM | ID: wpr-468484

ABSTRACT

Objective To evaluate the effect of methylprednisolone on hepatic ischemia-reperfusion (I/R) injury in the patients undergoing hepatolobectomy.Methods Sixty ASA physical status Ⅱ or Ⅲ patients,aged 30-64 yr,weighing 45-75 kg,scheduled for elective hepatolobectomy,were randomized to control group or methylprednisolone group (n =30 each).After induction of anesthesia,methylprednisolone 500 mg (in 100 ml of normal saline) was infused intravenously at 5 ml/min before skin incision in group M.Anesthesia was induced with propofol,fentanyl and cisatracurium.The patients were endotracheally intubated and mechanically ventilated.PETCO2 was maintained at 35-45 mmHg.Anesthesia was maintained with 1%-3% sevoflurane inhalation,remifentanil infusion,and intermittent iv boluses of fentanyl and cisatracurium.MAP was maintained at 70-100 mmHg and HR at 50-90 bpm.At 10 min before induction of anesthesia,and on postoperative day 1,3 and 5,venous blood samples were collected for determination of the plasma levels of alanine aminotransferase (ALT),aspartate amminotransferase (AST),total bilirubin (TBIL),tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6).Results Compared with group C,the plasma levels of ALT,AST and TBIL were significantly decreased on postoperative day l and 3,and the plasma concentrations of TNF-α and IL-6 were decreased on postoperative day 1,3 and 5 in group M.Conclusion Methylprednisolone can reduce hepatic I/R injury in the patients undergoing hepatolobectomy and inhibition of systemic inflammatory responses is involved in the mechanism.

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Article in Chinese | WPRIM | ID: wpr-436007

ABSTRACT

Objective To investigate the diagnostic value of one-stop liver magnetic resonance dynamic enhanced MRA for esophageal and gastric varces.Methods 82 patients with liver cirrhosis portal hypertension who were diagnosed by clinical and laboratory detect were taken,conducting liver horizontal scanning and multitemporal three dimensional dynamic enhanced scanning using Philips Achieva 1.5T MRI scanner,and then make maximum intensity projection(MIP) at work station to draw up portal vein image,observing the form and distribution of portal vein and its branches,meanwhile refer to cross sectional image to carefully observe whether there was cirsoid vein in esophagus and stomach,and further the source,degree and depth of cirsoid vein were compared,and whether there was cirsoid vein in other parts,and the pathological situation of liver.Compared with the result of gastroscope inspection,whether there is cirsoid vein in esophagus and stomach.Results The trunk and class-Ⅲ branches of portal vein of all patients had been clearly shown.In this team,there were esophageal and gastric varces in 78 patients,specifically including varices of fundus of stomach & esophageal varices in 27 patients,and varices of fundus of stomach and varices of body of stomach in 19 patients.Meanwhile,it diagnose 6 patients with liver cirrhosis and liver cancer and indicate 8 patients with liver cirrhosis nodule cancerization.The endoscope found out esophageal varices and varices of fundus of stomach in 68 patients,specifically including gastric varicesa and esophageal varices in 25 patients,sole gastric varicesa in 8 patients,and sole esophageal varices in 35 patients.Conclusion The one-stop liver three dimensional dynamic enhanced MRA is with great value in diagnosing the location and degree of esophageal varices and varices of fundus of stomach of patients with portal hypertension.The overall effect is better than endoscope.

19.
Article in Chinese | WPRIM | ID: wpr-435292

ABSTRACT

Teaching in the course of anesthesiology for college students not majoring in anesthesiology was reformed and optimized by inducing various approaches such as development of interest,heuristic teaching,multimedia teaching,clinical simulation teaching and anesthesia experience in the First Affiliated Hospital,Sun Yat-sen University.Students' fundamental knowledge of clinical anesthesiology and abilities of clinical thinking and active learning were improved.Based on the summary of teaching practice,teachers should cultivate students' interest in anesthesiology,emphasize interactive teaching and learning and take fundamental knowledge of clinical anesthesiology as main teaching objectives in the clinical practice course of anesthesiology.

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Chinese Journal of Anesthesiology ; (12): 1481-1484, 2012.
Article in Chinese | WPRIM | ID: wpr-430326

ABSTRACT

Objective To investigate the effects of hydrogen inhalation on the brain injury after intestinal ischemia/reperfusion (I/R) in rats.Methods Fifty-four healthy male Sprague-Dawley rats aged 6-8 months,weighing 285-350 g,were randomly allocated to one of 3 groups (n =18 each):sham operation group (group S),intestinal I/R group (group I/R) and hydrogen inhalation group (group H2).Intestinal I/R was produced by occlusion of the superior mesenteric artery for 90 min followed by reperfusion.2% hydrogen was inhaled for 3 h starting from the end of ischemia.The cognitive function was detected at 1,2 and 5 days of reperfusion using Morris water maze test.The animals were sacrificed after the test and brains were isolated for detection of the cerebral edema and morphology in brain tissues.The cerebral water content ((wet weight-dry weight)/ wet weight × 100%) was measured.The pathological changes in the prefrontal cortex was observed under light microscope.The neuronal apoptosis was detected by TUNEL.Results Compared with the S group,the number of normal neurons in the prefrontal cortex was significantly decreased,the latency and swimming distance were both prolonged,the frequency of crossing the original platform was decreased,and the cerebral water content and the number of apoptotic neurons were increased in groups I/R and H2 (P < 0.05).Compared with I/R group,the number of normal neurons in the prefrontal cortex was significantly increased,the latency and swimming distance were both shortened,the frequency of crossing the original platform was increased,the cerebral water content and the nunber of apoptotic neurons were decreased in group H2 (P < 0.05).The pathological changes were obvious in I/R group,however,they were significantly attenuated in H2 group.Conclusion H2 inhalation can reduce the brain damage and improve the cognitive dysfunction after intestinal I/R in rats.

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