Analysis of whole genome expression profile for the effect of melatonin on radiation-induced intestinal injury in mice / 中华放射医学与防护杂志

Objective:To elucidate the change of whole genome expression profile for the effect of melatonin on radiation-induced intestinal injury in mice.Methods:C57BL/6J male mice were administrated with melatonin at 10 mg/kg body weight by intraperitoneal injection once a day for five consecutive days before abdominal irradiation with 14 Gy of γ-rays. Small intestines were harvested 3 d after radiation. GO annotation and KEGG pathway of the differential genes involved in small intestine were explored by DNA microarray analysis.Results:Compared with the control group, 584 differential genes were up-regulated and 538 differential genes were down-regulated for administration group pre-irradiation. The overlapping differential genes were selected from the irradiated mice and the administrated mice pre-irradiation. There were 324 up-regulated genes and 246 down-regulated genes unique to the administrated mice pre-irradiation. GO annotation analysis of the differential genes indicated that the top 15 significantly enriched biological processes for the administrated mice pre-irradiation mainly included autophagosome assembly (GO: 0000045), autophagosome organization (GO: 1905037) and regulation of acute inflammatory response (GO: 0002673). The genes ATG12, ATG16L2 and AMBRA1 were involved in autophagosome assembly and autophagosome organization. The genes C3, CPN1, CD55, CFP, CNR1, C1QA, C2 and CREB3L3 were involved in the regulation of acute inflammation response. KEGG pathway analysis of the differential genes involved indicated that the top 15 significantly enriched pathways for the administrated mice pre-irradiation mainly included O-glycan biosynthesis (hsa00512), glycosphingolipid biosynthesis (hsa00603), ECM-receptor interaction (hsa04512) and biosynthesis of unsaturated fatty acids (hsa01040). qRT-PCR verification showed that the expressions of ATG12 and ATG16L2 genes involved in autophagy for the administrated mice pre-irradiation increased significantly compared with the irradiated mice ( t=2.40, 4.35, P<0.05). Conclusions:The differential genes related with the biological process of autophagy, acute inflammatory response and the pathway of unsaturated fatty acid biosynthesis might be involved in the effect of melatonin on radiation-induced intestinal injury.

Spatial-temporal distribution characteristics and prediction of influenza in Hubei in 2009-2020 / 公共卫生与预防医学

Objective To explore the spatial-temporal characteristics of influenza epidemic in Hubei from 2009 to 2020, and make short-term prediction to provide reference for influenza prevention and control strategies. Methods Time series seasonal decomposition model and geographic spatial analysis method were used to analyze spatial-temporal evolution characteristics of influenza prevalence in Hubei during 2009-2020. LSTM neural network model was used to predict the monthly influenza incidence from 2020 to 2023. Results Influenza was mainly prevalent in the end of winter and the beginning of spring (December to March) were periods of high influenza incidence. In recent years, the influenza pandemic has shown an increasing trend. Influenza epidemic was characterized by significant spatial differentiation, with “A-shaped point-axis structure” surrounding counties were more severe . The epidemic center of gravity experienced a spatial evolution process from west to east and from north to south. LSTM neural network model predicted that although the influenza incidence rate from January 2020 to December 2023 is lower than that in 2019, it is still at a high level, and shows a peak epidemic in winter and spring. Conclusion Influenza epidemic in Hubei is characterized by a high epidemic period in late winter and early spring, and the southeast of Hubei is the key epidemic area. It is suggested that publicity and prevention and control should be strengthened according to people, time and place, and key populations and areas should be encouraged to receive influenza vaccines in advance.

Surveillance of Aedes populations in Jiangsu Province in 2020 / 中国血吸虫病防治杂志

Objective To investigate the seasonal Aedes population fluctuation and the resistance of Aedes populations to common insecticides in Jiangsu Province in 2020, so as to provide insights into vector-borne infectious diseases control.. Methods One village was randomly sampled from each of Xinbei District of Changzhou City and Zhangjiagang County of Suzhou City in southern Jiangsu Province, Hai’an County of Nantong City and Yandu District of Yancheng City in Central Jiangsu Province, and Suining County of Xuzhou City and Sihong County of Suqian City in northern Jiangsu Province during the period between May and October, 2020. A small ponding container was sampled, and larval Aedes mosquitoes were collected using straws once each in early and late stages of each month. All larvae were bred in laboratory to adults for population identification. In addition, larval breeding were observed in all small ponding containers in and out of 30 households that were randomly sampled from six surveillance sites, and the larval mosquito density was estimated using Breteau index. Larval A. albopictus mosquitoes were sampled around Cuiyuan New Village in Jintan District of Changzhou City, and bred in laboratory to the first offspring generation, and the susceptibility of adult female mosquitoes to deltamethrin, lambda-cyhalothrin, malathion, and propoxur was tested using the filter-paper bioassay recommended by WHO. Results A total of 1 165 larval Aedes mosquitoes were captured from small ponding containers in six surveillance sites of Jiangsu Province in 2020, and all were identified as A. albopictus following eclosion. The largest number of Aedes larvae captured was found in July. A total of 1 152 households were investigated in six surveillance sites, and the mean Breteau indexes were 9.58, 13.20, 13.71, 13.20, 12.18 and 5.58 from May to October, respectively, while a high Aedes transmission risk was seen in Xinbei District of Changzhou City, with a higher Breteau index than in Suining (H = 23.667, Padjusted = 0.001) and Sihong (H = 22.500, Padjusted = 0.003) counties. The field-captured A. albopictus from Cuiyuan New Village in Jintan District of Changzhou City remained sensitive to malathion, but was resistant to propoxur, and developed high-level resistance to deltamethrin and lambda-cyhalothrin. Conclusions A. albopictus was present in southern, central and northern Jiangsu Province in 2020, and the larval density peaked in July. A. albopictus captured from Cuiyuan New Village in Jintan District of Changzhou City has developed high-level resistance to pyrethroid pesticides.

Risk predictive models of healthcare-seeking delay among imported malaria patients in Jiangsu Province based on the machine learning / 中国血吸虫病防治杂志

Objective To create risk predictive models of healthcare-seeking delay among imported malaria patients in Jiangsu Province based on machine learning algorithms, so as to provide insights into early identification of imported malaria cases in Jiangsu Province. Methods Case investigation, first symptoms and time of initial diagnosis of imported malaria patients in Jiangsu Province in 2019 were captured from Infectious Disease Report Information Management System and Parasitic Disease Prevention and Control Information Management System of Chinese Center for Disease Control and Prevention. The risk predictive models of healthcare-seeking delay among imported malaria patients were created with the back propagation (BP) neural network model, logistic regression model, random forest model and Bayesian model using thirteen factors as independent variables, including occupation, species of malaria parasite, main clinical manifestations, presence of complications, severity of disease, age, duration of residing abroad, frequency of malaria parasite infections abroad, incubation period, level of institution at initial diagnosis, country of origin, number of individuals travelling with patients and way to go abroad, and time of healthcare-seeking delay as a dependent variable. Logistic regression model was visualized using a nomogram, and the nomogram was evaluated using calibration curves. In addition, the efficiency of the four models for prediction of risk of healthcare-seeking delay among imported malaria patients was evaluated using the area under curve (AUC) of receiver operating characteristic curve (ROC). The importance of each characteristic was quantified and attributed by using SHAP to examine the positive and negative effects of the value of each characteristic on the predictive efficiency. Results A total of 244 imported malaria patients were enrolled, including 100 cases (40.98%) with the duration from onset of first symptoms to time of initial diagnosis that exceeded 24 hours. Logistic regression analysis identified a history of malaria parasite infection [odds ratio (OR) = 3.075, 95% confidential interval (CI): (1.597, 5.923)], long incubation period [OR = 1.010, 95% CI: (1.001, 1.018)] and seeking healthcare in provincial or municipal medical facilities [OR = 12.550, 95% CI: (1.158, 135.963)] as risk factors for delay in seeking healthcare among imported malaria cases. BP neural network modeling showed that duration of residing abroad, incubation period and age posed great impacts on delay in healthcare-seek among imported malaria patients. Random forest modeling showed that the top five factors with the greatest impact on healthcare-seeking delay included main clinical manifestations, the way to go abroad, incubation period, duration of residing abroad and age among imported malaria patients, and Bayesian modeling revealed that the top five factors affecting healthcare-seeking delay among imported malaria patients included level of institutions at initial diagnosis, age, country of origin, history of malaria parasite infection and individuals travelling with imported malaria patients. ROC curve analysis showed higher overall performance of the BP neural network model and the logistic regression model for prediction of the risk of healthcare-seeking delay among imported malaria patients (Z = 2.700 to 4.641, all P values < 0.01), with no statistically significant difference in the AUC among four models (Z = 1.209, P > 0.05). The sensitivity (71.00%) and Youden index (43.92%) of the logistic regression model was higher than those of the BP neural network (63.00% and 36.61%, respectively), and the specificity of the BP neural network model (73.61%) was higher than that of the logistic regression model (72.92%). Conclusions Imported malaria cases with long duration of residing abroad, a history of malaria parasite infection, long incubation period, advanced age and seeking healthcare in provincial or municipal medical institutions have a high likelihood of delay in healthcare-seeking in Jiangsu Province. The models created based on the logistic regression and BP neural network show a high efficiency for prediction of the risk of healthcare-seeking among imported malaria patients in Jiangsu Province, which may provide insights into health management of imported malaria patients.

Research advances in pyroptosis of endothelial cells and related diseases / 国际外科学杂志

Structural and functional changes of endothelial cells are the basic pathology of many diseases. Pyroptosis is a kind of newly discovered programmed cell death which causes the formation of large pores in the membrane that drive swelling and membrane rupture. Membrane rupture disperses cytosolic contents which further elicit a systemic inflammatory response. Pyroptosis of endothelial cells make a difference in the occurrence and developement of many diseases, including Atherosclerosis, myocardial ischemia-reperfusion injury, acute lung injury, traumatic brain injury and diabetes. In this article, the progress over the years of the research on the involvement of vascular endothelial cells in the pyroptosis is reviewed.

Prognosis of fetuses with cystichygroma and nuchal translucency/nuchal fold thickening on prenatal echography / 浙江大学学报·医学版

OBJECTIVE@#To analyze the prognosis of fetuses with cystic hygroma (CH) or nuchal translucency (NT) or nuchal fold (NF) thickening detected by prenatal echography.@*METHODS@#From January 2014 to December 2015, 124 fetuses with CH and NT/NF thickening on prenatal echography were enrolled from Women's Hospital of Zhejiang University School of Medicine. The basic clinical information, ultrasonic results, pregnancy outcomes and newborn follow-ups were analyzed. The cases were grouped by prognosis and the factors affecting prognosis were analyzed with logistic regression.@*RESULTS@#There were 85 cases of labor induction including one stillbirth and 39 cases delivered. Except one infant who died after birth, all live births survived with good prognosis. Univariate analysis showed that the gestational age at diagnosis of poor prognosis group was earlier than that of good prognosis group (<0.01); and the former group also had higher hydrops fetalis rate and additional structural anomalies rate (all <0.01). Multivariate regression analysis showed that hydrops fetalis (=90.105, <0.05) and additional structural anomalies (=61.854, <0.05) were risk factors of poor prognosis in fetuses with CH and NT/NF thickening.@*CONCLUSIONS@#Fetuses with diagnosed CH or NT/NF thickening on prenatal ultrasonography are likely to be associated with chromosomal abnormality. Early gestational weeks, hydrops fetalis and additional structural anomalies may indicate poor prognosis.

Application of mesenchymal stem cells in sepsis / 中华危重病急救医学

Sepsis is defined as life-threating organ dysfunction caused by a dysregulated response to infection. Severe cases may develop into multiple organ dysfunction syndrome (MODS) and even death. However, conventional therapeutic intervention for sepsis is not ideal. Mesenchymal stem cells (MSCs) are multipotent stem cells that can differentiate into a variety of cell types. They are characterized by anti-inflammatory, anti-microbial, and immunomodulatory power, and rehabilitation of tissues and organs and anti-apoptosis. The role of MSCs in regulating immune function, regulating signal transduction pathways, repairing tissues and organs, and antibacterial and antiviral effects, is summarized in this review in order to understand the mechanism of application of MSCs in the field of sepsis, and lay the foundation for further research.

Research progress of SUMOylation modification in DNA double-strand break repair / 国际生物医学工程杂志

The small ubiquitin-like modified protein (SUMO) is a protein structurally similar to ubiquitin which is involved in post-translational modification of proteins. SUMOylation refers to the process that SUMO molecule covalently binding to the specific lysine site of target proteins through maturation, activation, binding and ligation by ubiquitin-like specific protease 1 (Ulp1), E1 activating enzyme, E2 binding enzyme, and E3 ligase. SUMOylation alters the activity of target proteins, which is involved in the regulation of various cellular functions such as transcriptional regulation, regulation of embryonic development, cellular stress, maintenance of chromatin structure and genomic stability. In recent years, it has been found that SUMOylation modification is also widely involved in DNA damage repair, especially DNA double-strand breaks (DSBs), which are the most serious types of DNA damage. SUMOylation is involved in almost all processes of DSBs repair, so its role in DNA damage repair has become a research hotspot. In this paper, the research progress of the regulation of SUMOylation in DSBs repair was reviewed.

Vasorelaxant Effects of the Isoflavones in Red Clover on Isolated Rat Mesenteric Artery in an Endothelium-dependent Manner / 中国药师

Objective:To investigate the vasorelaxant effect of the isoflavones in red clover on rat mesenteric artery rings. Meth-ods:The rat mesenteric artery rings were placed between two L form metal needles. When stable precontractions induced by vasocon-strictor were got, the different concentrations of isoflavones in red clover and ( or) blocker were added to the baths. The isometric ten-sion of the rat mesenteric artery rings was recorded using a myograph system. Results:The isoflavones in red clover could concentra-tion-dependently relax the rat mesenteric artery rings pre-contracted by K+krebs solution (60 mmol·L-1K+), and compared with the control group (Dmso), the difference was statistically significant (P<0. 01). The isoflavones in red clover-induced relaxation was re-duced by the removal of endothelium, and compared with the complete endothelial group, the difference was statistically significant ( P<0. 01). Pretreatment with Nω-nitro-L-arginine-methylesterhydrochloride (L-NAME,10 -4 mol·L-1) could suppress the relaxing re-sponse to the isoflavones in red clover, and compared with the control group, the difference was statistically significant (P<0. 01). However, indomethacin(10 -5 mol·L-1) did not significantly affect the relaxation induced by the isoflavones in red clover (P >0. 05). Conclusion:The vasorelaxant effect of the isoflavones in red clover is through promoting nitric oxide release from vascular en-dothelium.

Research progress in the multiple organ dysfunction syndrome caused by heat stroke / 中华危重病急救医学

Heat stroke (HS) is a life-threatening illness characterized by core body temperatures above 40 ℃ coupled with central nervous system (CNS) dysfunction, including delirium, convulsions, and/or coma. Its morbidity has increased dramatically in the past few decades. Multiple organ dysfunction syndrome (MODS) is not only the most serious complication of HS, but also the leading cause of deaths. Understanding the pathogenesis, characteristic and advancement pattern of MODS caused by HS will have a profound effect on the clinical treatment, research and mortality decrease. The pathogenesis, injury characteristic of each system and organ, and treatment methods were summarized in this review so as to deepen the clinical recognition of this disease.

Vasorelaxant Effects of the Isoflavones in Red Clover on Isolated Rat Mesenteric Artery in an Endothelium-dependent Manner / 中国药师

Objective:To investigate the vasorelaxant effect of the isoflavones in red clover on rat mesenteric artery rings. Meth-ods:The rat mesenteric artery rings were placed between two L form metal needles. When stable precontractions induced by vasocon-strictor were got, the different concentrations of isoflavones in red clover and ( or) blocker were added to the baths. The isometric ten-sion of the rat mesenteric artery rings was recorded using a myograph system. Results:The isoflavones in red clover could concentra-tion-dependently relax the rat mesenteric artery rings pre-contracted by K+krebs solution (60 mmol·L-1K+), and compared with the control group (Dmso), the difference was statistically significant (P<0. 01). The isoflavones in red clover-induced relaxation was re-duced by the removal of endothelium, and compared with the complete endothelial group, the difference was statistically significant ( P<0. 01). Pretreatment with Nω-nitro-L-arginine-methylesterhydrochloride (L-NAME,10 -4 mol·L-1) could suppress the relaxing re-sponse to the isoflavones in red clover, and compared with the control group, the difference was statistically significant (P<0. 01). However, indomethacin(10 -5 mol·L-1) did not significantly affect the relaxation induced by the isoflavones in red clover (P >0. 05). Conclusion:The vasorelaxant effect of the isoflavones in red clover is through promoting nitric oxide release from vascular en-dothelium.

Prevalence of rhinitis and related factors among college students in Urumqi,the Xinjiang Uygur Autonomous Region / 中国基层医药

Objective To investigate the prevalence and the related factors of allergic rhinitis in Xinjiang College students.Methods Five universities'students in Urumqi were chosen as the research subjects,the question-naire survey was conducted by the method of cluster sampling,and the results were analyzed.Results 1 609 ques-tionnaires were valid from 2 000 questionnaires.The prevalence rate of allergic rhinitis was 36.8% in the five univer-sities in Urumqi.Prevalence rate increased with grade.The prevalence rates of drinking,regular cleaning nasal cavity, scrubbing their nose in allergic rhinitis were 43.2%,40.7%,53.8% respectively,which were higher than those in not drinking,not regular cleaning nasal cavity,not scrub nose,the differences were statistically significant (χ2 =6.945,9.679,100.845,all P 0.05).Conclusion Allergic rhinitis not only closely related to the grades and the environmental factors,but also has some connections with living habits(drink,clean nasal cavity and scrub noses).

Trends on the changing prevalence in patients with early syphilis and HIV infection among men who having sex with men in Nanjing, from 2008 to 2013 / 中华流行病学杂志

<p><b>OBJECTIVE</b>To observe the trends on prevalence of early syphilis and HIV infection among men who had sex with men in the last six years from a HIV/AIDS counseling and testing clinic in Nanjing, and to develop relative strategies.</p><p><b>METHODS</b>Men who have sex with men involved in AIDS/HIV and syphilis voluntary counseling and testing services were recruited and investigated from 2008 to 2013 in this clinic. Clients whose syphilis serologic test showed positive were determined the diagnosis by physician within the referral network from sexually transmitted diseases clinics. Demographic information on early syphilis, HIV infection or co-infection with HIV and early syphilis was described while related epidemic trend analysis was performed.</p><p><b>RESULTS</b>The annual numbers of men having sex with men under survey were 1 004 in 2008, 1 218 in 2009, 1 236 in 2010, 748 in 2011, 1 019 in 2012 and 1 420 in 2013. The prevalence rates of early syphilis appeared to be: 2.19% in 2008, 2.71% in 2009, 2.43% in 2010, 1.74% in 2011, 3.04% in 2012 and 2.32% in 2013, with the trend as: P > 0.05. The prevalence rates of HIV infection were 1.29% in 2008, 2.63% in 2009, 5.42% in 2010, 8.82% in 2011, 11.97% in 2012 and 10.42% in 2013, with trend as: P < 0.01. The prevalence rates of early syphilis with HIV infection increased from 0.20% in 2008 to 1.06% in 2013 (trend: P < 0.01). The proportion of HIV co-infection among men having sex with men with early syphilis infection, increased from 9.09% in 2008 to 45.45% in 2013, with trend: P < 0.01.</p><p><b>CONCLUSION</b>Early syphilis infection among men who having sex with men showed a stable trend but the number of HIV and co-infections with early syphilis and HIV increased rapidly in the last six years in Nanjing. Continued intervention strategies should target on men who have sex with men to slow down the epidemic of syphilis and HIV infection.</p>

Study of Abnormal Heart Rate Variability and Its Acupuncture Intervention in Anxiety Disorder / 上海针灸杂志

Heart rate variability (HRV) is a reliable, innocuous and sensitive new index to measure cardiac autonomic nervous function. Anxiety disorder is often accompanied by autonomic nerve dysfunction and its main sign is abnormal HRV. Acupuncture can affect HRV indices, correct abnormal HRV and improve cardiac autonomic nerve dysfunction to relieve anxiety. This article sorts out and analyzes recent years’ studies on abnormal HRV in anxiety disorder, the effect of acupuncture on HRV and acupuncture regulation of abnormal HRV in anxiety disorder to provide a therapeutic basis for clinical acupuncture intervention in abnormal HRV in anxiety disorder.

Expression and regulatory mechanism of microRNA-155 in the villi of patients with unexplained recurrent spontaneous abortion patients / 中华妇产科杂志

Objective To study the expression and the mechanism of miR-155in the villi of patients with unexplained recurrent spontaneous abortion (URSA).Methods The expression of miR-155 in the villi of 36 cases with URSA (URSA group) and 25 women with normal early pregnancy (control group) were detected by stem-loop real-time reverse transcription (RT) qPCR.Expression of hypoxia inducible factor-1 (HIF-1α),vascular endothelial cell growth factor(VEGF) and micro lymphatic vessel density (MVD) in the villi of were measured by immnohistochemical staining among two groups.Results (1) miR-155 expression:the mean miR-155 expression were 1.456 (0.489,2.459) in URSA group and 2.833 (1.740,3.794) in control group,which reached statistical difference (P ＜0.05).The mean expression of miR-155 of 1.683 (0.902,2.459) in URSA group with abortion times (≤ 3) was significantly higher than 1.229 (0.489,1.719) in URSA group with more than 4 times abortion (P ＜ 0.05).(2) Indexes:the expression of HIF-1α,VEGF and MVD value were 121 ± 12,134 ± 12,36 ± 6 in URSA group and 99 ± 10,109 ± 10,28 ±4 in control group,which reached statistical difference(P ＜ 0.01).The expression of HIF-1α,VEGF and MVD value of 119 ± 12,134 ± 12,35 ± 5 in URSA group with less than 3 times abortion was significantly lower than 128 ± 12,138 ± 12,43 ± 6 in URSA group with more than 4 times abortion (P ＜ 0.01).Conclusions The expression of miR-155 and HIF-1α is topically stimulated by oxygen signal.HIF-1α adjusts the transcription and translation of VEGF,which together involved in placental trophoblast invasion and placental angiogenesis.The low expression of miR-155 could interfere with expression of HIF-1α and VEGF,which might be involved in villous vascular dysplasia in URSA.

Effect of Gegen Qinlian Decoction on Rotavirus-inducing Diarrhea in Neonatal Mice / 中国中医药信息杂志

Objective To investigate the anti-rotavirus effect of Gegen Qinlian decoction on rotavirus (RV)-inducing diarrhea neonatal mice model, and provide evidences for pharmacological and pharmacodynamic studies. Methods Neonatal diarrhea mice model of Kunming family infected with RV-Wa was developed. Symptom, diarrhea ratio and severity level, histological changes of neonatal mice’s small intestine and lung was assessed after Gegen Qinlian decoction (0.78 g/kg) treatment. Results Diarrhea ratio, diarrhea severity level, histological changes of neonatal mice’s small intestine and lung were obviously decreased after Gegen Qinlian decoction (0.78 g/kg) treatment. Conclusion Gegen Qinlian decoction has anti-rotavirus effect on RV induced diarrhea.

Application of evidence- based nursing in nasopharyngeal carcinoma patients undergoing radiotherapy / 中国实用护理杂志

Objective To discuss application of evidence-based nursing in nasopharyngeal carcinoma patients undergoing radiotherapy. Methods Evidence-based nursing was used in 33 nasopharyngeal carcinoma patients undergoing radiotherapy. Results After evidence-based nursing, all the patients actively cooperated with the doctors and nurses, lived through the treatment process smoothly, and radiotherapy complications were reduced or avoided. Conclusions Evidence-based nursing is an idealized nursing method which could reduce or avoid the complications and alleviate the pain of patients and improve the quality of nursing.

Study on Immunoregulatory Function of Ethanol Extract from Celastrus orbiculatus / 中国药房

OBJECTIVE: To study immunoregulatory effect of ethanol extract from Celastrus orbiculatus. METHODS: Mononuclear macrophage experiment and hemolysin experiment were used to evaluate effect of ethanol extract from C. orbiculatus on non-specific immunity with clearance as index and specific immunity with hemolysin as index. RESULTS: Ethanol extract from C. orbiculatus (60 g?kg-1) could significantly lower carbon clearance in mice(P

High-performance capillary electrophoresis method for ferulic acid assay in serum of rats treated with Buyang Huanwu Decoction / 中草药

Object To develop a high-performance capillary electrophoresis method to determine ferulic acid concentrations in serum of rats treated with Buyang Huanwu Decoction (BHD). Methods Capillary zone electrophoresis was applied for ferulic acid assay, quantitative determination was based on internal standard and detection was carried on by direct UV. The electrolyte buffer was composed of 25 mmol/L borax-methanol (85∶15). Capillary electrophoresis was performed using a 52 cm (30 cm to detector)?50 ?m fused-silica capillary tube. Separation voltage was 20 kV, sampling time was 3 s, detection wavelength was 320 nm, and the temperature was 30 ℃. Results Ferulic acid was successfully separated within 6 min, the recoveries were 97.2% in serum and 103.28% in BHD, respectively. RSD were 3.73% and 0.91% (n=3), respectively. Conclusion This method can supply reference for the determination of ferulic acid in serum samples and BHD.

Therapeutic Mechanism of Zhixie Tuire Tablet for Rotavirus-induced Diarrhea / 中药新药与临床药理

Objective To probe into the therapeutic mechanism of Zhixie Tuire Tablet (ZTT) for rotavirus-induced diarrhea. Methods We established the 4-day old Kunming neonatal mice model by infecting group A G3 type of rotavirus,and then gave the inoculated mice with ZTT at the dose of 0.78 g/kg for three days. Fluorescent quantification PCR method was used to detect the changes of sodium glucose transporter SGLT1 mRNA level and radio-immunity method was used for the examination of PGE2 level in neonatal mice small intestine. Results SGLT1mRNA level was lower in ZTT group than that in the normal group,the difference being significant (P 0.05). PGE2 level in ZTT group was higher than that in the normal group,but lower than that in the model group (P