1.Determination of ochratoxin A in human urine by HPLC-FLD after cleaned-up by molecularly imprinted polymer solid phase extraction column.
Acta Pharmaceutica Sinica 2014;49(4):517-23
A method was developed for the determination of ochratoxin A (OTA) in human urine by HPLC-FLD after molecularly imprinted polymer solid phase extraction (MIP-SPE) column. After the pH being adjusted to 2.5 with 0.1 mol x L(-1) HC1, sample was cleaned up with MIP-SPE column for ochratoxin A, the analyte was analyzed by high performance liquid chromatography coupled with fluorescence detection (HPLC-FLD), and finally all the positive results were confirmed by LC-MS/MS. Recoveries from urine samples spiked with OTA at levels ranging from 2 to 20 ng x mL(-1) were 90.6%-101.9%, and RSDs were 0.1%-1.6%. Sixty-five volunteers living in Beijing took part in the study, of which 5 were found containing OTA in their urine and the highest value was 0.091 ng x mL(-1). The MIP-SPE column was firstly applied to purify and concentrate OTA in human urine, this method is simple, rapid and reliable and can be used to determine the contents of OTA in human urine.
2.Impact of elective cesarean section on short-long term prognosis in neonates
International Journal of Pediatrics 2012;39(4):329-332
The rates of cesarean delivery are dramatically rising in many parts of the world due to the improved surgical techniques and broaden clinical indications,along with the inadequate recognition of potential disadvantages for neonates.This review is to investigate the short-term and long-term influence of elective cesarean section on neonatal outcomes,including neonatal respiratory morbidity,iatrogenic prematurity,postnatal development of the immune system and atopic disease.Althongh there is no evidence that cesarean section is an independent risk factor so far,present studies clearly demonstrate that it plays an important role concurrent with other factors in increasing neonatal morbidity and mortality.Consequently,efforts should be made to reduce high rate of elective cesarean sections through elaborate investigation of medical indications before the operation.
3.Progress in immune evasion mechanisms of cytomegalovirus infection
International Journal of Pediatrics 2014;41(2):131-135
Human cytomegalovirus (HCMV) is a highly prevalent infection and it has become a paradigm for viral immune evasion due to its unique multitude of immune-modulatory strategies on host innate and adaptive immune response.Following primary infection,CMV can persist as a subclinical,recurrent infection for the lifetime of an individual because human immune system is unable to clarify.However,the immune evasion mechanism of CMV remains unclear.Recent data has revealed an astounding variety of methods in immune evasion to suppress host immune system,including inhibiting antigen presentation on infected cell surfaces to protect against T cell recognition and regulating the balance between natural killer cell inhibitory/activating receptor and ligand pairs to avoid NK cell attack.This review summarizes the latest literature regarding how CMV encodes a multitude of immune modulatory mechanisms devoted to escaping the host antiviral response,presents the future perspective of immunotherapy,and provides references for in-depth understanding of the immune evasion mechanisms leading to the control of CMV.
4.Progress of infectious mononucleosis associated with Epstein- Barr virus infection in children
International Journal of Pediatrics 2010;37(5):481-484
Infectious mononucleosis associated with Epstein-Barr virus infection (EBV-IM) is a proliferative disease of acute monocyte - macrophage system caused by primary EBV infection. Currently, the incidence IM has increased,and the cases are more severe. The mechanism of specific cellular immune response, new treatments and vaccines are increasingly becoming the focus.
5.Significant demand and key problems of membrane science and technology applying to pharmaceutical industry of Chinese materia medica
Chinese Traditional and Herbal Drugs 1994;0(12):-
To discuss the significant application for the membrane science and technology in the development of pharmaceutical industry of Chinese materia medica(CMM) in such aspects as obtaination of integrated effctive substances,transformation of traditional technology,reduction of power consumption, product safety,sewage treatment,and technological innovation.To analyze the major restrictions on the industrialization of CMM's membrane science and propose the corresponding measures.Currently,the development of macromolecule science and technology and the implementation of environmental-friendly strategy have advanced the technology of membrane to a new stage and thus offer the insurance to the integration of extraction,separation,concentration,and purification in traditional pharmaceutical production of CMM.Meanwhile,the technolgy of membrane separation has been widely used in the separation,concentration, and purification of macromolecule,which bears similar characteristics with traditional CMM.It is also a proof that the technology of membrane will improve the efficency of traditional CMM production when it is used in the pharmaceutical industry of CMM.
6.Effects of hesperidin on inflammatory cytokine levels in chronic bronchi-tic rats
Chinese Journal of Pathophysiology 2017;33(2):358-360,364
AIM:To observe the effects of hesperidin on the inflammatory cytokine levels in chronic bronchitic rats.METHODS:The rats were randomly divided into control group , model group and hesperidin treatment group .The rat model of chronic bronchitis was established by smoking .The pathological changes of the bronchial and lung tissues were observed by HE staining .The levels of TNF-α, IL-6 and IL-10 in the bronchoalveolar lavage fluid were analyzed by ELISA.The protein expression levels of ICAM-1 and VCAM-1 were detected by Western blot .RESULTS:Compared with model group , hesperidin treatment significantly reduced inflammatory infiltration in the bronchial and lung tissues , im-proved the integrity of the alveolar structure , and decreased the levels of TNF-αand IL-6 in the bronchoalveolar lavage flu-id, but had no effect on the IL-10 level.Moreover, the protein expression of ICAM-1 and VCAM-1 were dramatically inhib-ited after hesperidin treatment .CONCLUSION:Hesperidin decreases the levels of TNF-αand IL-6 in the bronchoalveolar lavage fluid in the rats with chronic bronchitis , which may be associated with the inhibition of ICAM-1 and VCAM-1 expres-sion.
7.Prediction of gestational diabetes mellitus in first trimester with body mass index, fasting blood glucose and glycosylated hemoglobin combined tests
The Journal of Practical Medicine 2016;32(19):3120-3122
Objective To study the clinical value of body mass index (BMI), fasting blood glucose (FPG)and glycosylated hemoglobin (HbA1c) combined tests for prediction of gestational diabetes mellitus (GDM) in first trimester. Methods 138 cases diagnosed as GDM and 133 cases of normal pregnant women were divided into study group and control group. The parameters of BMI , FPG and HbA1c were measured and compared. Results (1) BMI, FPG and HbA1c from study group were significantly higher than those from control group (P < 0.01). (2) The area under receiver operating characteristic curve (AUC) of BMI was 0.617 for predicting GDM, AUC of FPG was 0.700, and AUC of HbA1c was 0.684. When taking two of the optimal diagnostic cut-off values of BMI > 23.25, FPG > 4.25 L, HbA1c > 4.95% as screening method, AUC was 0.773. This method showed a diagnostic sensitivity of 73.3% and specificity of 82.4%. Conclusion BMI, FPG and HbA1c combined method in first trimester is valuable in predicting GDM.
8.Effect of two traction ways compression on hemostasis with three-way two-capsule
Modern Clinical Nursing 2015;(4):16-18
Objective To explore the effect of two traction ways of two-capsule compression on hemostasis. Methods Thirty-one hospitalized patients with compression hemostasis from February to January 2014 were set as the experiment group. Another thirty-two hospitalized patients from January 2012 to December 2012 were set as the control group. The control group was treated with traction of compression homeostasis in the traditional way, while the experiment group by the improved way. The two groups were compared in terms of the rate of effective compression hemostasis and the incidence of nasal membranes injury within 24 hours. Result The rate of the effective compression hemostasis within 24 h was not statistically different between the groups (P>0.05), but the incidence of nasal membranes injury was statistically different between them (P<0.05), the experiment group was less than that of the control group. Conclusion Improved traction of compression hemostasis is effective. It reduces the incidence of nasal membrane injury and pain so that it is worth clinical application.
9.Clinical analysis of endometrial carcinoma in young andnormal weight women
Clinical Medicine of China 2013;(5):451-454
Objective To investigate the clinical characteristics of endometrial carcinoma in young women,especially the normal weight women.Methods Seventy and five cases of endometrial carcinoma aged ≤ 40 years were treated in Obstetrics and Gynecology Hospital affiliated to Fudan University from January 2008 to December 2011.Among them,there are 68 cases of normal weight and obesity,who were divided into normal weight group (group A,32 cases) and obesity group(group B,36 cases) for comparisons and analysis.Results About 81.2% of the patients were menstrual disorders in group A and 83.3% in group B(P =0.822);The merge infertility accounted for 31.2% and 19.4% (P =0.279) respectively,and the oligomenorrhea accounted for 21.9% and 30.6% (P =0.418) respectively,the patients combined diabetes,high blood pressure or PCOS were 6.2% and 44.4% (P =0.001) respectively.According to International Federation of Gynecology and Ostetrics(FIGO) surgery-pathologic stage,two groups of stage Ⅰ were 68.8% and 83.3% (P =0.157),respectively.Stage Ⅱ-Ⅳ were 31.2% and 16.7% (P =0.157),respectively.Pathological type:8 (25.0%) cases were high-risk of pathology classification in group A,and Five cases (13.8%) in group B,others were endometrial adenocarcinoma.Operations were the main treatments.Five cases were progestogen therapied.After treatments,2 cases were full term pregnant,1 case is now pregnant.Conclusion The clinical manifestations of endometrial carcinoma in young women were mainly menstrual disorders.There were higher percentage infertilities and lower percentage diabetes,high blood pressure and PCOS in normal body weight patients.In normal body weight patients,pathology classification for middle-late of high-risk pattern was increasing.For patients in early stage,if have birth requirement,could be treated with the trial progesterone conservative.
10.Research on response inhibition of oppositional defiant disorder children
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(5):428-430
Objective To explore the response inhibition ability of oppositional defiant disorder symptoms children. Methods Subjects were 27 oppositional defiant disorder symptoms children and 27 normal children. They were asked to complete the stop signal task,go/no go task and the Simon task. Results The delay time of stop reaction (SOA,(260.27 ±69.12)ms) and go reaction time( (554.31 ±55. 81 )ms)of the oppositional defiant disorder symptoms children were shorter than the control group, the difference was significant (P<0. 05). However,the stop reaction and interference control ability were no significant difference between these two groups. Conclusion Oppositional Defiant Disorder symptoms children's poor prepotent response inhibition ability is cognitive mechanism of their impulsive behaviors.