In order to establish a method for the detection of serum antibodies to donkey-derived e-quine coronavirus(ECoV),recombinant ECoV N protein was expressed in E.coli system,purified by nickel column affinity chromatography and identified by Western blot.After optimizing the re-action conditions,the indirect ELISA(iELISA)detection method was established using the puri-fied recombinant protein as coating antigen and used to detect 143 clinical serum samples.The re-sults showed that the recombinant N protein,which has good reaction activity with serum antibod-y,was successfully expressed.The optimum conditions of the established iELISA method were as follows:the amount of antigen coated was 0.2 μg/well and overnight at 4 ℃,10％skimmed milk powder solution was sealed at 37℃ for 1.5 h,the dilution concentration of serum was 1∶200,and the enzyme-labeled secondary antibody diluted at 1∶10 000.The sensitivity test results showed that the positive serum could be diluted to 1∶6 400.The specificity test results showed that all an-tibodies to several donkey pathogens were negative.The repetitive test results showed that the in-tra-and inter-batch coefficients of variation were 2.90％-6.12％and 2.29％-7.88％respectively.The positive rate of clinical donkey serum was 57.3％.The iELISA established in this study pro-vides a technical support for epidemiological investigation and antibody surveillance.

In order to establish a method for the detection of serum antibodies to donkey-derived e-quine coronavirus(ECoV),recombinant ECoV N protein was expressed in E.coli system,purified by nickel column affinity chromatography and identified by Western blot.After optimizing the re-action conditions,the indirect ELISA(iELISA)detection method was established using the puri-fied recombinant protein as coating antigen and used to detect 143 clinical serum samples.The re-sults showed that the recombinant N protein,which has good reaction activity with serum antibod-y,was successfully expressed.The optimum conditions of the established iELISA method were as follows:the amount of antigen coated was 0.2 μg/well and overnight at 4 ℃,10％skimmed milk powder solution was sealed at 37℃ for 1.5 h,the dilution concentration of serum was 1∶200,and the enzyme-labeled secondary antibody diluted at 1∶10 000.The sensitivity test results showed that the positive serum could be diluted to 1∶6 400.The specificity test results showed that all an-tibodies to several donkey pathogens were negative.The repetitive test results showed that the in-tra-and inter-batch coefficients of variation were 2.90％-6.12％and 2.29％-7.88％respectively.The positive rate of clinical donkey serum was 57.3％.The iELISA established in this study pro-vides a technical support for epidemiological investigation and antibody surveillance.

Animal experiments are crucial in evaluating the preclinical safety and efficacy of new dental materials, drugs, instruments, and equipment by identifying and eliminating potential health risks to humans. An international team of several dental experts formulated a guideline named Preferred Reporting Items for Animal Studiesin Endodontology (PRIASE) 2021. Consisting of 11 domains, 43 individual items, and a flowchart. PRIASE provides guidance for animal experiments in dentistry and improves the quality of experiment design and reporting. This work introduces the process and basic content of the guideline and interprets the key items of its checklist with specific examples to provide reference for the reporting of animal experiment in dentistry in China.
Animals ; Animal Experimentation/standards* ; Checklist ; China ; Endodontics ; Guidelines as Topic ; Research Design

Objective To evaluate and compare the effects of endoscopic spinal surgery performed via the Kambin's triangle approach and the posterior interlaminar approach on patients diagnosed with lumbar disc herniation(LDH)and concurrent lateral recess stenosis.Methods The clinical data of patients who underwent lumbar pedicle screw fixation at our hospital between January 2017 and December 2023 were retrospectively analyzed.Patient information including sex,age,diagnosis,surgical level,presence and type of postoperative neurological complications was recorded.Based on postoperative CT scans,the zone and grade of screw penetration were assessed,and the distribution of different types of pedicle screw penetration was documented.The association between specific types of pedicle screw penetration and the occurrence of postoperative neurological symptoms was then analyzed.Results The operation time and postoperative hospital stay in the Kambin group were significantly shorter than those in the interlaminar group(P<0.05).On postoperative day 1 and at 1 month postoperatively,the VAS scores in the Kambin group were significantly lower than those in the interlaminar group(P<0.05).No significant differences were observed between the two groups in terms of ODI scores on postoperative day 1 and at 3 months postoperatively,or in the postoperative area of lateral recess stenosis(P>0.05).One case of postoperative infection was reported in the interlaminar group.Conclusions For patients with LDH and lateral recess stenosis,endoscopic spinal surgery via the Kambin's triangle approach is associated with a shorter operative duration.Both the Kambin's triangle approach and the interlaminar approach can effectively improve functional outcomes and decompress the lateral recess.However,the interlaminar approach requires further optimization to minimize the risk of complications.

Objective To evaluate and compare the effects of endoscopic spinal surgery performed via the Kambin's triangle approach and the posterior interlaminar approach on patients diagnosed with lumbar disc herniation(LDH)and concurrent lateral recess stenosis.Methods The clinical data of patients who underwent lumbar pedicle screw fixation at our hospital between January 2017 and December 2023 were retrospectively analyzed.Patient information including sex,age,diagnosis,surgical level,presence and type of postoperative neurological complications was recorded.Based on postoperative CT scans,the zone and grade of screw penetration were assessed,and the distribution of different types of pedicle screw penetration was documented.The association between specific types of pedicle screw penetration and the occurrence of postoperative neurological symptoms was then analyzed.Results The operation time and postoperative hospital stay in the Kambin group were significantly shorter than those in the interlaminar group(P<0.05).On postoperative day 1 and at 1 month postoperatively,the VAS scores in the Kambin group were significantly lower than those in the interlaminar group(P<0.05).No significant differences were observed between the two groups in terms of ODI scores on postoperative day 1 and at 3 months postoperatively,or in the postoperative area of lateral recess stenosis(P>0.05).One case of postoperative infection was reported in the interlaminar group.Conclusions For patients with LDH and lateral recess stenosis,endoscopic spinal surgery via the Kambin's triangle approach is associated with a shorter operative duration.Both the Kambin's triangle approach and the interlaminar approach can effectively improve functional outcomes and decompress the lateral recess.However,the interlaminar approach requires further optimization to minimize the risk of complications.

ObjectiveTo study the differences in volatile oil content of bran-processed Atractylodes lancea and its standard decoction concentrate and freeze-dried powder， as well as the differences in the types and contents of chemical components in volatile oil， and to clarify the quality value transmitting. MethodTen batches of A. lancea rhizoma were collected and prepared into raw products and bran-processed products of A. lancea， standard decoction concentrate and freeze-dried powder of bran-processed A. lancea in order to extract the volatile oil， and the transfer rate of volatile oil in each sample was calculated. Quantitative analysis of the main chemical components（β-eudesmol， atractylon， atractylodin） in each volatile oil was performed by gas chromatography（GC） on the HP-5 quartz capillary column（0.32 mm×30 m， 0.25 μm） with a flame ionization detector（FID）， a split ratio of 10∶1 and a temperature program（initial temperature at 80 ℃， hold for 1 min， rise to 150 ℃ at 10 ℃·min^-1， hold for 10 min， rise to 155 ℃ at 0.5 ℃·min^-1， hold for 5 min， rise to 240 ℃ at 8.5 ℃·min^-1， hold for 8 min）. Cluster analysis and principal component analysis（PCA） were used to explore the overall differences in types and contents of chemical components between the standard decoction concentrate and freeze-dried powder. ResultThe transfer rates of volatile oil in the bran-processed products， standard decoction concentrate and freeze-dried powder were 70.51%， 1.57% and 40.90%， respectively. The average transfer rates of β-eudesmol， atractylon and atractylodin in the volatile oil of bran-processed A. lancea were 58.45%， 48.49% and 55.64%， respectively. In the standard decoction concentrate， only β-eudesmol and atractylodin were detected， and their average transfer rates were 0.22% and 0.10%， respectively. And only β-eudesmol was detected in the freeze-dried powder with the average transfer rate of 8.37%. The results of cluster analysis and PCA showed that there are obvious differences in the types and contents of chemical components between the standard decoction concentrate and freeze-dried powder. ConclusionThe quality value transmitting between bran-processed A. lancea and its standard decoction concentrate and freeze-dried powder is stable， and if the freeze-dried powder is selected as the reference material of dispensing granules， appropriate amount of volatile oil should be added back to make it consistent with the quality of the standard decoction concentrate.

Objective To investigate the effects of Ligustilide on the withdrawal syndromes syn-dromes and monoamine neurotransmitters of hypothalamus and nucleus accumbens in morphine-dependent rats. Methods Totally 60 SD rats were divided into control group,model group,clonidine group and Ligust-ilide high(80 mg/kg),medium(40 mg/kg) and low(20 mg/kg) dose group according to the random number table with 10 in each group. Rats were given in gradual increasing doses of morphine to produce physical de-pendence. Morphine withdrawal syndrome was precipitated by naloxone and withdrawal symptoms were evalu-ated by Ryuta Tomoji score. The level of norepinephrine ( NE), dopamine ( DA) and 5-hydroxytryptamine (5-HT) in rats were tested with enzyme-linked immunosorbent assay(ELISA). Results The total score of somatic withdrawal syndromes in the control group,model group,clonidine group and Ligustilide low,medium and high dose group were 0,(31. 83±7. 33),(17. 92±6. 88),(25. 58±5. 99),(19. 88±4. 82) and (16. 75 ±4. 01) . Compared with the model group,the morphine withdrawal syndromes scores of Ligustilide low,me- dium and high dose groups and clonidine group were reduced(all P<0. 05). The level of NE,DA and 5-HT in hypothalamus and nucleus accumbens were increased compared with that of control group. Compared with the model group,the level of NE,DA and 5-HT in hypothalamus and nucleus accumbens of Ligustilide low, medium and high dose groups and clonidine group were significantly reduced (P<0. 05). Conclusion Ligu-stilide can effectively alleviate the symptoms in morphine-withdrawal rats,which may be related to the inhibi-tion of excessive release of monoamine neurotransmitters in hypothalamus and nucleus accumbens.

Objective To investigate the efficacy of micro?surgery for the treatment of medulla oblongata cavernomas. Methods A retrospective analysis was conducted on the clinical data of 21 patients with cavernous hemangioma who received micro?surgical treatment. Of the 21 patients, 13 were men and 8 women,aged 22 to 63 years. The preoperative Karnofsky performance status(KPS)score was 76.5 ± 10.2. The main clinical manifestations included sensory disorder and difficulty swallowing etc. According to the location of the lesions ,the posterior transchoroidal fissure approach was employed for 16 patients;far?lateral approach,5 patients. Electrophysiological monitoring and nervous system navigation were supple?mentarily adopted in both types of surgery. Further ,KPS scoring was conducted to evaluate the patients 'quality of life. Results The medulla cav?ernous hemangioma was excised in all cases. For 17 patients with primary neurological disorders ,their symptoms were alleviated or resolved;4 pa?tients had severe symptoms and 8 presented with new clinical symptoms. A follow?up visit was conducted 8 to 97 months post?surgery(average 47.6 months). All patients were found capable of caring for themselves in daily life and performing simple or normal learning and working activities without recurrence or bleeding. The mean postoperative KPS score was 83.7 ± 15.5. Conclusion Patients with medulla cavernous hemangioma bleeding or severe symptoms should actively seek surgical treatment. Repeated bleeding is the absolute indication for surgery. Surgical skills ,elec?trophysiological monitoring,and nervous system navigation can reduce nervous system damage and protect the brainstem. The patient's quality of life is expected to significantly improve after surgery.

Objective To evaluate effects of daily average temperature on the occurrence of urticaria in Lanzhou city,and to analyze differences in the effects between different populations.Methods Time-series data on daily outpatient visits for urticaria between January 1,2007 and December 31,2013 were collected from the First Hospital of Lanzhou University and Lanzhou University Second Hospital.Daily meteorological data during this peroid were obtained from the Gansu Meteorological Bureau.Distributed lag non-linear models were used to analyze the association between daily average temperature and occurrence of urticaria,and the analysis was stratified by age and gender.Results The association between daily average temperature and daily number of outpatient visits for urticaria was nonlinear.Low temperature had significant lag effects on the daily number of outpatient visits for urticaria,with the maximum relative risk (RR) value (1.014 [95％ CI 1.000-1.023]) observed at 6 ℃ on lag day 18.Stratification analysis demonstrated that the effects of high temperature on the number of outpatient visits for urticaria were apparent on the day of exposure in age groups of 0-18 and 19-64 years,but decreased on the day of exposure in the age group ≥ 65 years.The effects of low temperature,which showed similar trends along with the increment of lag days in all groups,were relatively delayed and occurred 2 to 4 days after exposure.Conclusions Air temperature affects the occurrence of urticaria in Lanzhou city.Low temperature has evident lag effects on the occurrence of urticaria,while high temperature does not have.

Objective To explore the effects of angelica naphtha on the withdrawal signs and norepinephrine neurotransmitter in uorphine-dependent rats.Methods 72 SD rats were randomly divided into control group,model group,clonidine group and three angelica naphtha groups (80,40 and 20 mg/kg).Rats were received gradualy increasing doses of morphine to produce physical dependence.Withdrawal symptoms were evaluated by Ryuta Tomoji score.The level of norepinephrine and normetanephrine(NMN) were tested by enzyme-linked immunosorbent assay(ELISA).Results The scores of withdrawal signs were (4.00± 3.29),(30.13±4.41),(18.96± 4.43),26.04±4.13),(22.33±4.60) and (19.00±3.47),respectively.The morphine withdrawal signs were reduced by angelica naphtha in a dose-dependent manner(P＜0.01),also significantly reduced the level of NE and NMN and the ratio of NMN/NE in the nucleus ceruleus and prefrontal cortex(all P＜0.01).Conclusion Angelica naphtha alleviates the withdrawal synlptons in morphine-dependent rats,which may be related to the inhibition of excessive turnover of norepinephrine neurotransmitters in the nucleus ceruleus and prefrontal cortex.