Objective To investigate the clinical efficacy of Jiawei Guizhi Fuling Decoction combined with mifepristone on uterine fibroids and the changes of serum sex hormone levels in patients after treatment.MethodsForty-two patients were randomly divided into three groups: control group (42 cases) and control group (41 cases).The rats were treated with Guizhi Fuling Decoction plus mifepristone combination for three months.The control group was given only monotherapy with normal mifepristone tablets.The time of treatment was consistent with that of the study group.The levels of serum sex hormones were measured quantitatively before and after treatment.By comparing the therapeutic effect of the patients in different experimental groups and the levels of hormone Differences in evaluation between groups.ResultsThe total effective rate of 92.9% in the study group was significantly better than that in the control group (73.8%).The difference between the two groups was statistically significant (P<0.01).After treatment, the study group and the control group Uterine / tumor volume was significantly reduced, the difference was significantly different (P<0.01), compared between the two groups after treatment of uterine / tumor volume, the study group than the control group, the volume was significantly reduced, the difference was statistically significant (P<0.05).Serum levels of sex hormones: Serum levels of E2 and P were significantly lower in the study group than in the control group (P<0.05).Before and after treatment, the levels of serum E2 and P were lower in the two groups than before treatment (P<0.05).ConclusionJiawei Guizhi Fuling Decoction combined with mifepristone has a better effect on the treatment of uterine fibroids with mifepristone monotherapy, which significantly reduces the level of serum sex hormones and promotes the reduction of uterine / tumor volume after administration.It is worthy of promotion the combination of traditional Chinese and Western medicine conservative treatment of uterine fibroids means.

Objective　To investigate the biological characteristics of the serine protease inhibitor 15 (RmS-15) protein of Rhipicephalus microplus, and to perform molecular cloning and prokaryotic expression. Methods RmS-15 gene was amplified and sequenced to construct a phylogenetic tree to understand its evolutionary relationships. Bioinformatic tools were used to analyze the physicochemical properties, signal peptide, secondary and tertiary structure of the RmS-15 protein. In addition, DNA star and ABCpred were used to predict potential B-lymphocyte antigenic epitopes of RmS-15 protein, and potential T-lymphocyte antigenic epitopes were predicted by SYF-PEITHI and IEDB. Finally, the RmS-15 recombinant protein of Rhipicephalus microplus was obtained using the E.coli prokaryotic expression system and purified. Results The RmS-15 gene with 1 212 bp was successfully amplified, encoding a protein comprising 403 amino acids. Phylogenetic tree results indicated high conservation of the RmS-15 protein among different tick amino acid sequences, with the closest phylogenetic relationships to the Rhipicephalus haemaphysaloides and the Rhipicephalus sanguineus. The results of physicochemical property analysis showed a 20-amino acid signal peptide at the N-terminus of the RmS-15 protein, with a relative molecular weight and theoretical isoelectric point of 44 000 and 6.68, respectively. The protein showed an average hydrophilicity of 0.001, classifying it as a stably hydrophilic protein. The results of antigenicity analysis showed that the dominant fragments of B-cell antigenic epitopes of RmS-15 protein were 102-112 aa,147-152 aa and 207-215 aa, and the dominant fragments of T-cell antigenic epitopes were 3-11 aa, 6-14 aa, 27-33 aa, 34-37 aa. Protein expression results showed that RmS-15 protein exhibited high expression levels in the supernatant after induction with 0.8 mmol/L IPTG at 16 ℃ for 24 hours and reached a successful purification with a single band of the protein molecular weight of 44 000. Conclusions The method of prokaryotic expression and purification of RmS-15 protein from Rhipicephalus microplus was successfully established. Bioinformatics analysis demonstrated its strong antigenicity, suggesting its potential to develop as a candidate vaccine for ticks.

Objective To investigate current management of external auditory canal irrigation among the nurses in otolaryngology in Guangdong Province,and to provide a reference for development and promotion of a standardised procedure.Methods From January to February in 2022,a total of 48 head nurses or nursing backbone in otolaryngology department of 48 hospitals from 21 major cities in Guangdong Province were selected by convenience sampling.A questionnaire proposed by Otolaryngology Nursing Committee of Guangdong Nursing Association was used to investigate the knowledge,operation procedure and training management in external auditory canal irrigation.Results A total of 48 head nurses or nursing backbone responded to the survey.The survey revealed that 34(70.8%)of the participants had mastered the knowledge of external auditory canal irrigation and 38(79.2%)of them had mastered the knowledge on the irrigation indications.In terms of operation procedure,syringe was applied as irrigator in 43(89.6%)hospitals,disposable irrigation needle was applied as flushing connector in 24(50.0%)hospitals,body surface temperature test of operator or patient was carried out in 24(50.0%)hospitals and adjusted flushing pressure was applied according to patients'feedback in 37(77.1%)hospitals.Regarding the training of external auditory canal irritation,35(72.9%)hospitals did not ask patients to sign an informed consent before,29(60.4%)hospitals required qualifications for operator and 45(93.7%)hospitals had the training programs.Conclusions The knowledge of external auditory canal irrigation of otolaryngology nurses in Guangdong province needs to be improved.The management of procedure and training of external auditory canal irrigation shall be standardised.It is suggested that the profession should draw up the external auditory canal irrigation standard,and all hospitals strengthen the management and training in order to promote the standardisation of specialised nursing together.