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OBJECTIVE：To study the improvement eff ects and its mech anism of Guiyuan decoction formula granules （GDFG） on model mice with decreased ovarian reserve （DOR）. METHODS ：Totally 42 female ICR mice whith with normal estrous cycle were randomly divided into control group ，model group ，estradiol valerate group （positive control ，0.15 mg/kg）and GDFG low-dose，medium-dose and high-dose groups （0.75，1.49，2.98 g/kg），with 7 mice in each group. Except for control group ，other groups were given cisplatin （3 mg/kg）intraperitoneally to establish DOR model. After modeling ，administration groups were given relevant medicine intragastrically；model group and control group were given normal saline intragastrically ，once a day ，for consecutive 4 weeks. After last administration ，ELISA assay was used to measure the serum levels of anti-Müllerian hormone （AMH）and follicle-stimulating hormone （FSH）in mice. Histopathological morphology of ovarian was observed by HE staining. Protein distribution of AMH receptor Ⅱ（AMHRⅡ）and Smad 4 in ovarian tissue were observed by immunohistochemistry. Protein expression of AMHR Ⅱ and Smad 4 were detected by Western blot assay. RESULTS ：Compared with control group ，theserum level of AMH ，the expression of AMHR Ⅱ and Smad 4 protein in ovarian tissue in model group were significantly decreased （P＜0.01），while the FSH level in serum was significantly increased （P＜0.01）；follicles were crumpled and lost nucleus ，ovarian interstitial were fibrosis ，luteum were loose ； AMHRⅡ and Smad 4 protein in ovarian tissue were mainly distributed in the follicle membrane and ovarian interstitial. Compared with model group ，the serum level of AMH ，the expression of AMHR Ⅱ and Smad 4 protein in ovarian tissue was increased significantly in GDFG groups （P＜0.01），while the serum level of FSH was decreased significantly （P＜0.05 or P＜0.01）；in ovarian tissue ，follicles at all levels could be found and follicle morphology was improved ，and no obvious nuclear loss and cumulus formation were found ；AMHRⅡ and Smad 4 protein were mainly distributed in the follicular nucleus （except for GDFG high-dose group) and the granular cell membrane （mainly distributed in the sinus follicles of GDFG medium-dose group ）；they were slightly distributed around the mature follicular nucleus or in corpus luteum. CONCLUSIONS ：GDFG can improve ovarian function of DOR model mice. The mechanism may be related with promoting serum level of AMH ，protein expression of AMHR Ⅱ and Smad 4，improving the distribution of AMHR Ⅱ and Smad 4 protein in ovarian granulosa cell membrane and follicular nucleus ， reducing FSH levels.
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Objective To analyze the trend and epidemiological features of human brucellosis from 2010 to 2016 in Weinan,Shaanxi Province,and to provide scientific data for effective control of human brucellosis.Methods The data were obtained from the China Disease Surveillance Information Management System and the brucellosis monitoring and epidemic survey of Weinan City from 2010 to 2016.The "three distribution" of brucellosis,the positive rate of serological test of the key group and the infecting route of the epidemic were analyzed using descriptive epidemiology method.Results A total of 1 624 brucellosis cases were reported in Weinan City from 2010 to 2016 and none death case occurred.The morbidity rose from 1.96/100 000 in 2010 to 11.16/100 000 in 2014.The morbidity fallen from 5.46/100 000 in 2015 to 3.33/100 000 in 2016.The reported cases distributed in 10 counties of Weinan and mainly concentrated in Dali County (682 cases),Chengcheng County (269 cases) and Pucheng County (225 cases),accounting for 72.41％ (1 176/1 624).There were brucellosis occurring in all months of the year.The age group distributed mainly from 40 to 64 years old which accounted for 63.67％ (1 034/1 624) of the total reported cases.The peasants accounted for 91.75％ (1 490/1 624) in all cases.Men were significantly higher than women and the morbidity ratio of male to female was 3.28 ∶ 1.00 (1 245 ∶ 379).A total of 15 126 key occupational persons were tested and the positive rate of serology was 2.21％ (335/15 126) annually.The feeding and delivery process were the main ways of infection.Conclusions The brucellosis epidemic in Weinan shows a trend from rise to decline.The middle-aged male peasants account for major population in all cases and the ways of infection are diversified.
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Objective To investigate the current status of nurses'' needlestick injuries during venous blood sampling, evaluate effective prevention strategies.Methods A stratified cluster sampling method was used to investigate clinical nurses in China by questionnaire, contents of questionnaire included the general information of nurses, training and management on venous blood sampling among nursing staff, adherence to wearing gloves before blood sampling, the occurrence of needlestick injuries during the process of venous blood sampling in the past year and so on.Results A total of 2 861 questionnaires were distributed, and 2 575 valid questionnaires were recovered.93.17％ of the investigated nurses had participated in the training of venous blood sampling regularly;87.15％ received regular check of venous blood sampling;before venous blood sampling, only 72.74％ knew whether the patient had bloodborne infectious disease;only 61.01％ wore gloves during blood sampling.Incidence of needlestick injuries during venous blood sampling was 20.78％ in the past year.There was no significant differences in the incidence of needlestick injuries when using 3 different types of needles(Pearson x2=1.649, P=0.438).48.21％ of needlestick injuries occurred during disposing medical waste.Conclusion The training and management on nurses'' venous blood sampling is better in China, but incidence of needlestick injuries is still high.It is necessary to formulate safety operation regulations of venous blood sampling, standardize the operation procedures and specify the contents of training, so as to correct nurses'' unsafe behavior during venous blood sampling.
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Objective To analyze the published articles on the etiology of rheumatoid arthritis (RA) and catch the recent research hot topics.Methods Literature searching on the etiology of RA was conducted through PubMed database of US Congress Library of Medicine published in past five years.Bibliographic Item CO-Occurrence Matrix Builder (BICOMB) to bibliometric analysis and statistical product and service solutions (SPSS) 19.0 were used for cluster analysis and plotting strategic coordinate figure.Results Four research hot topics were identified by analyzing the keywords:① Therapeutic and adverse effects of antirheumatic agents;② Genetics and complications of RA;③ Immunity of autoantigens and autoantibodies in RA;④ Immune cells and microRNAs in RA.Conclusion Researches on RA etiology have developed steadily,with different current status and developing tendency,which provides reference for related studies.