OBJECTIVE:To study the bio-equivalence of domestic loratadine syrup and tablets in human beings.METHODS:a dose fo40mg domestic loratadine(syrup or tablet)was given to18healthy male volunteers to a randomized crossover design.Blood samples were collected before administration and20min,40min,1hr,1.5hr,2hr,3hr,4hr,6hr,8hr,12hr,24h after administration.The concentrations of Loratadine in blood were determined by HPLC.Pharmacokinetic parameters and relative bio-availability were detected with3p97program.RESULTS:The main pharmacokinetic parameters of domestic Lortadine syrup and tablet were as follows:C max were(40.91?15.42)ng/ml and(41.57?18.68)ng/ml respectively;T max were(1.04?0.19)h and(1.19?0.25)h respectively;T 1/2 were(4.43?1.67)h and(4.21?1.49)h respectively;AUC 0～24 we_ re(127.60?46.28)(ng?h)/ml and(133.13?45.65)(ng?h)/ml respectively;AUC 0～∞ were(132.98?47.43)(ng?h)/ml and(138.16?47.26)(ng?h)/ml respectively.The relative bio-availability was(96.25?21.30)%.CONCLUSION:the do?mestic Lortadine syrup and tablet are bio-equivalent.

Objective To observe the effect of Juli Sanjie Pill(JSP) on estrogen receptor(ER)? and ER? expression in the myometrium and hysteromyoma tissue,and to explore the correlation of ER? and ER? expression levels with the incidence of hysteromyoma. Methods Forty hysteromyoma patients were divided into two groups: 20 patients with operative indications after oral use of JSP and asking for operation,were enrolled in the treatment group,and other 20 patiens without mediation of medicine but asking for operation were in the control group.The ER? and ER? expression levels in hysteromyoma tissue and the surrounding normal myometrium of the two groups were detected by radioimmunoassay.Results There presented the expression of ER? and ER? in the hysteromyoma tissue and the surrounding normal myometrium of the two groups,and the levels in the hysteromyoma tissue were higher than that in the myometrium(P0.05).Conclusion The incidence of hysteromyoma is correlated with the local expression of ER? and ER? in the uterus.The therapeutic mechanism of JSP for hysteromyoma is probably related with the decrease of ER? and ER? expression levels in hysteromyoma tissue and with the decrease of ER? level in the surrounding normal myometrium.

Objective To investigate the efficacy comparison of endovascular therapy and simple medical therapy for symptomatic intracranial artery stenosis. Methods A total of 145 patients with intracranial artery stenosis were analyzed retrospectively. They were divided into either an endovascular therapy group (n=72) or a medical therapy group (n=73). They were treated with endovascular therapy (gateway balloon,wingspan stents,Apollo stents) or medical therapy (aspirin 100 mg/d,clopidogrel 75mg/d, and atorvastatin 20-40 mg/d) according the willingness of the patients or their family members. The incidences of stroke and transient ischemic attack ( TIA ) , and restenosis rate ( stenosis rate >50% as a standard) during 1-,3-,6-,9-,and 12-month follow-up periods were observed and compared. Results On the basis of medical therapy,the patients of the endovascular therapy group were successfully stented. The success rate of stenting was 98. 6% (70/71). Seven patients had complications in the endovascular therapy group (9.9%),2 of them complicated with hemorrhage(one of was died),drinking cough,hoarseness, dizziness,headache,and excitement were one case in each, the other patients were cured and discharged with active medical treatment, and they did not have serious sequelae. At 12 months after treatment, the stroke recurrence rate of the endovascular therapy group was 8. 4% (n=6,both were TIA),and that of the medical therapy group was 26. 0% (84. 2% was minor stroke). There was significant difference (χ2 =7. 752,P<0. 01);at 12 months after treatment,the incidences of restenosis and aggravated stenosis were 5. 6% (n=4) and 6. 8% (n=5) respectively. There was no significant difference (χ2 =0. 091,P>0. 05). Conclusion Compared with the medical therapy,the efficacy of endovascular therapy for symptomatic intra-cranial arterial stenosis is more significant. The improvement of clinical prognosis is superior to medical therapy.

BACKGROUND: Thin endometrial diseases are a challenge in clinical treatment at present. Scholars have found that bone marrow mesenchymal stem cells (BMSCs) transplantation has its unique curative effect and advantages, but few studies have been conducted on pathway or gene control. OBJECTIVE: To observe the effect of BMSCs transplantation in rats with thin endometrium based on the HOXA10 regulatory network. METHODS: Twenty-one adult female Sprague-Dawley rats of SPF grade (provided by the Animal Experimental Center, Guangzhou University of Chinese Medicine in China) were randomly divided into three groups (n=7/group): control group, model group, and BMSCs group. In the latter two groups, a thin endometrium model was prepared in each rat by filling the uterine cavity with 95％ ethanol. In the control group, normal saline was injected to fill the uterine cavity of rats. After extraction of ethanol or normal saline, the rats in the BMSCs group were injected intrauterinely with 1 mL of BMSCs suspension (1×1010 cells/L) , and those in the control and model groups were given the same volume of normal saline. After two estrous cycles, the uterus of each rat was removed. Hematoxylin-eosin staining was used to measure the thickness of the endometrium. Immunohistochemistry was used to detect the expression of vimentin, keratin, vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3. qRT-PCR was used to detect the relative transcription of HOXA10 and miR-196 b. RESULTS AND CONCLUSION: (1) Compared with the control group, the endometrial thickness of the rats were significantly thinner in the model and BMSCs groups (P < 0.05) , while the endometrial thickness in the BMSCs group was thicker than that in the model group (P < 0.05). (2) The mean absorbance values of endometrial vimentin, keratin, vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3 were highest in the control group, higher in the BMSCs group and lowest in the model group, and there were significant differences between groups (P < 0.05). (3) The relative transcript level of HOXA10 gene in the model and BMSCs group was significantly lower than that in the control group, while the relative transcript level of HOXA10 gene in the BMSCs group was significantly higher than that in the model group (P < 0.05). The relative transcript level of miR-196 b in the model and BMSCs groups was significantly higher than that in the control group (P < 0.05) , while the relative transcript level of miR-196 b in the BMSCs group was lower than that in the model group (P < 0.05). (4) HOXA10 was negatively correlated with miR-196 b gene, HOXA10 was positively correlated with the protein expression to different extents, and miR-196 b gene was negatively correlated with the protein expression to different extents. These findings suggest that BMSCs transplantation can improve the endometrial thickness and relevant protein levels of thin endometrium rats to some extent, which may be attributed to the negative regulation of HOXA10 gene by miR-196 b, and HOXA10 gene further promotes the expression of vascular endothelial growth factor, leukemia inhibitory factor and integrin αvβ3 proteins.

Pulmonary function testing (PFT) is a widely used method in early screening, severity evaluating and outcome predicting of lung diseases. In the practice of standardized training of pulmonary function tests, through the problem-based theory teaching and participative teaching and so on, we made the lung function inspection personnel to realize the examination operation essentials, and through situational teaching, we also cultivated the inspection personnel to master the communication skills with the children, so as to improve their professional quality, and ensure the effectiveness of the quality control of pulmonary function.

Based on the statistical materials of SARS epidemic process in a general hospital in 2003 and with least square method, the epidemic laws are fitted through MATLABL, and the infection characteristics and relative conclusions of SARS are analyzed.

Objective To prepare a recombinant pneumococcal surface protein A clade 4 ( PspA4) and to analyze its immunogenicity.Methods The gene encoding PspA4 protein was synthesized and inserted into pET-20b to construct the recombinant expression plasmid.The transformed E.coli strains carrying expression plasmid were induced to express PspA4 protein.ELISA was performed to analyze the ti-ters of PspA4-specific IgG in a mouse model.Results The recombinant PspA4 protein of high purity ( 90%) was successfully prepared.The titers of PspA4-specific antibody in mice received PspA4 immuniza-tion were 106 times higher than those of the blank control group, suggesting that the expressed PspA4 protein had the advantage of high immunogenicity.Conclusion This study suggested that the PspA4 protein might be used as one of the candidate protein for the development of pneumovax and laid a foundation for further in-vestigation on pneumococcal protein based vaccine.

Objective To investigate the levels and significance of Th17 cells and regulatory T cells (Treg) in peripheral blood of children with allergic rhinitis during pollen and non-pollen seasons.Methods Thirteen children with hay fever, 10 children with house dust mite(HDM)-allergic asthma and 10 healthy children were recruited into this study.Percentages of Th17 and Treg cells were detected by flow cytometry.Levels of IL-17, IL-10 and TGF-β in cell culture supernatants were measured by ELISA.Results (1) The percentages of Th17 cells in children with allergic rhinitis [(3.4±2.4)%] were significantly higher than those in HDM-allergic asthmatics [(2.1±1.6)%] and those in healthy children [(0.5±0.3)%] during pollen season (both P<0.05).The levels of Treg cells in allergic rhinitis group [(2.1±1.3)%] and in HDM-allergic asthma group [(3.6±1.9)%] were significantly lower than those in healthy control group [(5.5±2.8)%] (both P<0.05).The levels of Th17 cells [(3.0±1.9)% vs (3.4±2.4)%, P<0.05] and ratios of Th17/Treg cells [(1.4±1.0)% vs (1.7±1.5)%, P<0.05] in children with allergic rhinitis were significantly decreased during non-pollen season as compared with those during pollen season, but the levels of Treg cells were up-regulated [(2.4±1.6)% vs (2.1±1.3)%, P<0.05].(2) Correlation analysis revealed that the ratios of Th17/Treg cells were positively correlated with the concentrations of FeNO (fractional concentration of exhaled NO) (r=0.321, P<0.05) and the counts of circulating eosinophils (r=0.198, P<0.05) in children with allergic rhinitis during pollen season.Conclusion The imbalanced Th17 and Treg cells in children with allergic rhinitis during pollen season might play a vital role in the regulation of allergic airway inflammation.

Objective To explore the current status of emotional exhaustion among clinical nurses and its relationship with work stress, thought suppression, difficulties in emotion regulation. Methods A totally of 1 159 clinical nurses from 10 cities in Henan Province and Fujian Province were enrolled as the research subjects using grabbing random balls method. And their status of work stress, thought suppression, difficulties in emotion regulation and emotional exhaustion were investigated by Depression-Anxiety-Stress Scale, White Bear Suppression Inventory, Brief Version of the Difficulties in Emotion Regulation Scale and Emotional Exhaustion Scale. Results The scores for work stress, thought suppression, difficulties in emotion regulation, emotional exhaustion were (23.5±3.8), (47.4±6.5), (54.1±7.2), (11.7±4.2), respectively. Among them, 40.0% of nurses experienced emotional exhaustion. Bootstrap analysis results showed that work stress positively affected emotional exhaustion among clinical nurses [standardized partial regression coefficient (β)=0.42, 95% confidence intervals (CI)： 0.36-0.44］. Work stress affected emotional exhaustion through thought suppression (β=0.16, 95%CI： 0.14-0.20), difficulties in emotion regulation (β=0.16, 95%CI： 0.14-0.19), and the chain mediating role of thought suppression and difficulties in emotion regulation (β=0.07, 95%CI： 0.04-0.09). Conclusion Emotional exhaustion symptoms are prevalent among clinical nurses. Work stress directly and indirectly influences thought suppression, difficulties in emotion regulation and emotional exhaustion of nurses.

Objective: To study the relationship between compassion fatigue and workplace psychological violence, alexithymia, and empathy in clinical nurses. Methods: A total of 1 159 clinical nurses from 10 cities in Henan and Fujian Provinces were enrolled using the method of grabbing random balls. Questionnaires including Workplace Psychologically Violent Behaviors Instrument, the Toronto Alexithymia Scale, Jefferson Scale of Empathy Health Professionals, Professional Quality of Life Scale were used to investigate the status of workplace psychological violence, alexithymia, empathy, and compassion fatigue in participants. Bootstrap analysis was used to analyze the relationship between workplace psychological violence, alexithymia, empathy, and compassion fatigue scores. Results: The average score for workplace psychological violence among clinical nurses was (26.2±6.5), with 405 nurses (34.9%) having experienced workplace psychological violence. The scores for alexithymia, empathy and compassion fatigue were (58.3±12.3), (104.3±18.6) and (48.5±6.7) respectively. Mild compassion fatigue was detected in 34.9% of participants, while moderate to severe compassion fatigue accounted for 48.8%. Bootstrap test result showed that workplace psychological violence had a positive impact on compassion fatigue ［standardized effect value (β)=0.40, 95% confidence interval(CI)： 0.35-0.44］. Workplace psychological violence had separate mediating effects through alexithymia (β=0.15, 95%CI： 0.10-0.19), empathy (β=0.16, 95%CI： 0.10-0.21) , and a chain mediating effect through alexithymia and empathy on compassion fatigue (β=0.06, 95%CI： 0.03-0.09). Conclusion: Compassion fatigue symptoms are relatively common among clinical nurses. Experiencing workplace psychological violence directly affects compassion fatigue and can indirectly affect it through the mediating effects of alexithymia and empathy.