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Objective:To study the analgesic effect of preprcelecoxib on total knee arthroplasty in patients with Kashin-Beck disease(KBD).Methods:Eighty-four patients with severe knee joint KBD who underwent total knee arthroplasty in our hospital from January 2017 to January 2019 were selected as the subject of study. The patients were randomly divided into control group ( n = 42) and observation group ( n = 42). The control group was not treated with any analgesia before operation. The observation group was given preemptive analgesia with preprcelecoxib, and patients were injected intravenously with 40 mg preprcelecoxib 30 min before anesthesia induction. The visual analogue score (VAS) score and number of pressing patient-controlled induce analgesia (PCIA) 30 min, 2 h, 4 h and 12 h after operation were compared between two groups. The Hospital for Special Surgery (HSS) score and stress response index [norepinephrine (NE), blood glucose (BG) and cortisol(Cor)] were compared between two groups before operation and 12 and 24 h after operation. And the incidence of adverse drug incidence was also compared between the two groups. Results:The VAS score of the two groups increased at first and then decreased. There was no significant difference in VAS scores between the two groups 30 min after operation ( P > 0.05). But 2, 4 and 12 h after operation, the VAS score in the observation group [(5.75 ± 0.27), (4.02 ± 0.85), (2.04 ± 0.23) points] were significantly lower than those in the control group [(7.34 ± 0.35), (5.96 ± 0.90), (3.89 ± 0.27) points, P < 0.05]. The HSS score increased over time between the two groups, but without significant difference before operation ( P > 0.05). And 12 and 24 h after operation, the HSS scores in the observation group [(53.19 ± 6.53), (75.18 ± 4.63) points] were significantly higher than those in the control group [(46.29 ± 6.37), (60.38 ± 5.29) points, P < 0.05]. The level of stress response index of the two groups increased with time. And 12 and 24 h after operation, the levels of NE [(325.94 ± 25.67), (397.63 ± 27.55) ng/L], BG [(5.38 ± 0.52), (5.41 ± 0.54) nmol/L] and Cor [(241.94 ± 14.18), (253.82 ± 14.65) mg/L] in the observation group were significantly lower than those in the control group [(387.28 ± 26.92), (437.84 ± 28.96) ng/L, (5.79 ± 0.43), (6.54 ± 0.52) nmol/L, (275.39 ± 13.72), (289.63 ± 13.95) mg/L, P < 0.05]. The number of PCIA pressing 24 h after operation in both groups was significantly higher than that 12 h after operation. The number of PCIA (4.62 ± 0.84, 8.38 ± 0.41) in the observation group was significantly lower than that in the control group (8.26 ± 0.65, 12.48 ± 0.73) 12 and 24 h after operation ( P < 0.05). The incidence of adverse reactions (19.05%, 8/42) in the observation group was significantly lower than that in the control group (52.38%, 22/42, P < 0.05). Conclusions:Preprcelecoxib can significantly reduce postoperative pain, reduce the expression of stress index, improve knee motion in a short period of time, reduce the number of pressing (PCIA) and the incidence of adverse drug reactions in patients with severe KBD of knee joint.
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Objective To screen endophytic fungal strains isolated from wild Huperzia serrata which can highly produce hu?perzine A. Methods The strain producing huperzine A was identified through thin layer chromatography(TLC)and high-perfor?mance liquid chromatography(HPLC)with authentic huperzine A. The fungus was identified according to its morphological character?istics and nuclear ribosomal DNA ITS sequence. Results The strain was identified as Fusarium oxysporum NSG-1 according to its morphological characteristics and nuclear ribosomal DNA ITS sequence. The amount of huperzine A produced by the fermentation li?quor of this endophytic fungus was quantified to be 1.11 mg/100 ml by HPLC,which was higher than that of previously reported endo?phytic fungi. Conclusion Endophytic fungus producing high huperzine A can be obtained from H. serrata. The production of huper?zine A based on mutagenesis and transformation of the obtained strain may adapt to the industry production.
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Objective: To investigate the electroencephalogram (EEG) characteristics, cerebral blood fl ow, glucose metabolism, and pathological characteristics in cats kindled by pentylenetetrazol (PTZ). Methods: Ten adult male cats received intramuscular injections of PTZ at a sub-convulsive dose of 25 mg/kg once daily. Cats were considered to be kindled when a class V or above seizure was observed. Subsequently, scalp EEG, 99mTc-ECD-single-photon emission computed tomography (SPECT), 18FDG-positron emission tomography (PET), and Cresyl violet staining were employed to evaluate brain activity, cerebral blood fl ow, glucose metabolism, and pathological characteristics representing epileptic foci during interictal stages. Results: The EEG data revealed bilateral dissymmetry paroxysmal activity in the form of δ and θ waves, as well as paroxysmal spikes and sharp waves instead of symmetric highamplitude rhythm of 8-12 Hz in cats kindled by PTZ compared to controls. In addition, low blood perfusion and low glucose metabolism unilaterally in the temporal lobe were observed in PTZ-kindled cats, in contrast to the bilateral symmetrical blood perfusion and high glucose metabolism observed in control cats. Pathological examinations showed a thickening of white matter in the ipsilateral temporal region and a thinning of gray matter in PTZ-kindled cats. Microscopically, we observed a structure disturbance of hippocampal CA3 area in PTZ-kindled cats. Conclusion: Epileptic foci of PTZ-kindled cats were localized to the unilateral temporal lobe, in a manner highly similar to the pathophysiology of human temporal lobe epilepsy.
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Objective To explore the role of inositol requiring enzyme 1 α (IRE1α) mediated endoplasmic reticulum stress associated apoptotic molecules in hippocampal neuronal injury in rats with status epilepsy following lithium-pilocarpine.Methods All 96 Wistar rats were randomly divided into control group and status epilepsy (SE) group.The SE group was further divided into 5 subgroups (3,6,12,24,48 h) according to different time points.pmmunofluorescence was used to observe the expressions of endoplasmic reticulum stress (ERS) markers glucose-regulating protein 78 kd (GRP78) and phosphoIRE1α (active form of endoplasmic reticulum resident protein IRE1α) at the CA3 area of rats in each group.Then,the expressions of IRElα mediated downstream apoptotie markers phospho-c-JunN-terminalkinase (JNK) and caspase12 were detected.Finally,TUNEL assay was used to observe neuronal apoptosis of hippocampal CA3 area at different time points after SE in rats.Results Immunofluorescence showed that GRP78 and phospho-IRE1α positive neurons were significantly increased in the SE subgroups compared with control group (6.90％ ± 0.96％,4.60％ ± 1.12％,respectively) and 12 h subgroup reached the peak (GRP78:87.45％ ±3.63％,F =356.82,P ＜0.05; phospho-IRE1α:86.90％ ±3.82％,F =300.80,P ＜ 0.05).Immunohistochemistry and Western blot demonstrated that the levels of phospho-JNK and caspase12 in the SE subgroups were significantly higher than that in the control group which reached the peak at 12 h after SE.The changes were in accord with phospho-IRE1α.Simultaneously,hippocampal neuronal apoptosis was detected in each SE subgroup and was most severe at 12 h after SE,which showed similar changes to the expressions of phospho-IRE1α,phospho-JNK and caspase12.Conclusions ERS was induced in rats following SE evidenced by increasing the expression of GRP78.IRE1α may promote hippocampal neuron apoptosis in rats following SE through activating JNK and caspase12.
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Objective:To predict Th/B cell epitopes in HA of influenza virus(H1N1)and analyze antigenicity of the candidate epitopes in order to develop epitope-bacterin by the way of bioinformatics.Methods:The HA amino acid sequences of infiuenza virus(H1N1),which the viral infection was prevalent recently,were downloaded from Genbank.The Th/B cell epitopes were predicted and analyzed by bioinformatics methods.Then,specificity and conservation of the candidate epitopes were estimated.Finally,antigenicity of the candidate epitopes was identified by influenza virus(H1N1)positiVe serum samples of mice.Results:Three Th/B cell epitopes containing HA_(73-87),HA_(125-139),HA_(188-205) were acquired Two of the candidate epitopes were in a relatively conserved domain of HA1,and a deal of 2006-2009 influenza virus(H1N1)isolates contained the sequences.Moreover,the candidate epitopes were showedin a distinct antibody combining reactivity with the influenza virus (H1N1)positive serum of mice,which inferred the predicted epitopes to be functional ones.Conclusion:The selected epitopes are able to be functional HA Th/B cell epitopes of influenza virus(H1N1).Our study also establish the foundations for the further research of influenza virus infectlon and immunity mechanism,the recognition of influenza virus(H1N1)functional epitope and the development of epitope vaccines.
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<p><b>OBJECTIVE</b>To investigate the TNF-alpha induced apoptosis of U937 cells, the expression, degradation and subcellular localization of IkappaB-alpha, and its degradation mechanism.</p><p><b>METHOD</b>Changes and subcellular loca-lization of IkappaB-alpha were observed by fluorescence microscopy, expression and degradation of IkappaB-alpha protein with N-tosyl-L-phenylalanylchloromethyl ketone (TPCK protease inhibitor) blocking test and apoptosis of U937 cell by flow cytometry.</p><p><b>RESULTS</b>(1) immunolfluorescence assay showed that IkappaB-alpha localized in cytoplasm only. (2) The level of IkappaB-alpha protein was downregulated after TNF-alpha stimulation, flow cytometry also confirmed the downregulation. (3) The downregulation of IkappaB-alpha protein levels in TNF-alpha induced apoptosis was partially inhibited by TPCK. (4) The apoptosis rate of U937 cells induced by TNF-alpha was (60.73 +/- 1.61)%.</p><p><b>CONCLUSION</b>(1) Degradation of IkappaB-alpha protein during TNF-alpha induced apoptosis of U937 cells suggested the activation of NF-kappaB. (2) TPCK sensitive protease plays an important role in the degradation of IkappaB-alpha protein. (3) TPCK sensitive protease also involved in the apoptosis of U937 cells induced by TNF-alpha.</p>
Subject(s)
Humans , Apoptosis , Down-Regulation , NF-kappa B , Metabolism , Tumor Necrosis Factor-alpha , Metabolism , U937 CellsABSTRACT
Objective:To investigate the relationship between the level of Bcl 2 protein in EB virus infected cells and the sensitivity of this cells to NK activity and apoptosis inducing factors.Methods:Antisense oligodexynucleotides(ODNs) were used to modulate the expression of Bcl 2 gene in Epstein Barr virus transformed B lymphoblastoid cell lines(EBV LCLs);then the change of cytotoxicity of natural killer cells and the sensitivity of apoptosis inducing elements(taking out growth factor ?dexamethasone)targeting EBV LCLs,were investigated.Results:The level of Bcl 2 expression in EBV LCLs has negative relativity with the cytotoxicity of NK cells to EBV LCLs(P
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Objective:To predict Th/B cell epitopes in HA of influenza virus(H1N1) and analyze antigenicity of the candidate epitopes in order to develop epitope-bacterin by the way of bioinformatics.Methods:The HA amino acid sequences of influenza virus (H1N1),which the viral infection was prevalent recently,were downloaded from Genbank.The Th/B cell epitopes were predicted and analyzed by bioinformatics methods.Then,specificity and conservation of the candidate epitopes were estimated.Finally,antigenicity of the candidate epitopes was identified by influenza virus (H1N1) positive serum samples of mice.Results:Three Th/B cell epitopes containing HA73-87,HA125-139,HA188-205 were acquired.Two of the candidate epitopes were in a relatively conserved domain of HA1,and a deal of 2006-2009 influenza virus (H1N1) isolates contained the sequences.Moreover,the candidate epitopes were showedin a distinct antibody combining reactivity with the influenza virus (H1N1) positive serum of mice,which inferred the predicted epitopes to be functional ones.Conclusion:The selected epitopes are able to be functional HA Th/B cell epitopes of influenza virus (H1N1).Our study also establish the foundations for the further research of influenza virus infection and immunity mechanism,the recognition of influenza virus (H1N1) functional epitope and the development of epitope vaccines.