OBJECTIVE:To establish a HPLC-chiral stationary phase(CSP) for separating the enantiomers of lactic acid and determining the optical purity of lactic acid.METHODS:Lactic acid samples of different optical purity were determined by HPLC-CSP vs.optical rotation method.The enantiomers of lactic acid were separated on Chirex 3126(D)-penicillamine chiral column.The mobile phase consisted of copper sulfate solution-isopropyl alcohol (85∶15) at a flow rate of 0.6 mL?min-1.The detection wavelength was set at 254 nm.RESULTS:A baseline separation of the enantiomers of lactic acid was achieved with a separation factor of greater than 1.2.The calibration curve was linear in the range of 0.75～48.24 mg?mL-1 (r=0.999 3),RSD=1.21%.The determination results determined by HPLC-CSP were similar to those determined by optical rotation method.CONCLUSION:The established method is simple,reliable in results and reproducible,and it is applicable for the separation of the enantiomers of lactic acid and determination of the optical purity of lactic acid.

OBJECTIVE:To explore the clinical role of two-hour(C2)of CsA in allogeneic hematopoietic stem cell transplantation.METHODS:The whole blood CsA concentration of 9 patients of C0 and 12 of C2 were determined by FPIA method . RESULTS: The satisfactory immunosuppressive concentration was found as follow: C0 was 200～400 ?g?L-1and C2 was 500～700 ?g?L-1.Both C0 and C2 could predict the acute rejection and side-effects,but C2 is more effective.CONCLUSION:The factors that affect the whole blood concentration of CsA were complex. CsA blood concentration monitoring can be used to guide rational use of CsA,but C2 is more effective than C0.

Objective To investigate quality of life and its influencing factors among elderly women with urinary incontinence(UI) living at nursing homes in Beijing. Method A randomized method was used to select six districts in Beijing. All the nursing homes in these 6 districts were included in our study,642 eligible elderly women participated in the survey. Quality of life of 244 women who were identified with different type UI were assessed. Bivariate analysis and multiple analysis were performed. Results The average score of quality of life was 8.5 ± 6.6. Scores of social embarrassment, activity & limiting behavior, psychosocial impacts were 1.8 ± 1.4,4.0 ± 3.5 and 3.3 ± 2.7 respectively. In bivariate analysis, significant differences were found by type of UI, severity of UI,course of UI, health condition, income level and self-care ability. In multiple analysis after adjustment of other variables, UI course≥5 years and inability to take care of herself were risk factors of quality of life.Conclusion Quality of life of elderly women with UI is poor, specific nursing and treatment should be conducted.

Objective To evaluate prevalence and risk factors of urinary incontinence(UI)among aged women living at nursing homes in Beijing,and provide references of relative health strategy.Methods Totally 642 women aged 60 years and over were randomly selected at nursing homes from 6 districts in Beijing.A questionnaire survey was conducted using International Consultationon Incontinence Questionnaire Female Lower Urinary Tract Symptoms Module (ICIQFLUTS) recommended by International Consultation on Incontinence (ICI).Results The prevalence rate of UI was 38.0％ (244/642) among whom 38.5％ (94/244) of participants knew their health conditions,7.8％ (19/244) visited hospital and 6.6％ (16/244) received medical or operational treatment.The proportions of respiratory disease ( 27.0 ％ vs.14.6％),digestive disease (23.4％vs.15.3％),urological disease(24.6％vs.8.5％),cardio-cerebralvascular disease(74.2％ vs.53.5％),neurological disease ( 9.4 ％ vs.5.0％),obstetric disease ( 27.5％ vs.10.1％),menstrual disorder (21.4％vs.14.4％),getting married before aged 21 years (51.5％vs.40.8％),being pregnant more than 4 times(50.2％vs.40.9％),the experience of both cesarean and natural birth (4.0％vs.0.8％),constipation(40.2％ vs.29.4％),fecal incontinence ( 13.1％ vs.4.0％),uneasy movement ( 22.5％vs.10.6％) and drinking (8.6％vs.3.5％) were higher in women with UI than in women without UI (P＜0.05 or P＜0.01).Eight risk factors that were entered into logistic regression model included getting married before 21 years old (OR =1.5,95 ％ CI:1.0-2.3,P＜0.05),being pregnant more than 4 times(OR=1.7,95％CI:1.1-2.4,P＜0.05),menstrual disorder(OR=1.7,95％CI:1.0-2.7,P＜0.05),respiratory disease(OR=1.6,95 ％CI:1.0-2.6,P＜0.05),urological disease(OR=2.4,95 ％CI:1.4-4.1,P＜ 0.01 ),cardio-cerebralvascular disease ( OR =2.0,95 ％ CI:1.3-3.0,P ＜ 0.01 ),obstetric disease(OR=3.4,95％CI:2.0-5.6,P＜0.01),moving uneasily(OR=2.5,95％CI:1.5-4.0,P＜0.01).Conclusions UI is a common disease among women residing at nursing homes.Specific measures including intervention and clinical treatment targeting risk factors should be conducted.

BACKGROUND: As the end product of lipid peroxidation, malondialdehyde (MDA) content can be used for assessment lipid peroxidation injury.Glutathione peroxidase (GSH-Px) acts as a free radical scavenger. Currently the effect of static magnetic field on the organism, whether positive or negative, has not been elucidated.OBJECTIVE: To study the effect of static magnetic field on anti-oxidation capacity of mouse hepatic tissues and its intensity dependence for producing such effects.DESIGN: A controlled comparative experiment.SETTING: Laboratories of Medical Physics and Biochemistry of Jiangsu University.MATERIALS: The experiment was conducted in the Laboratories of Medical Physics and Biochemistry of Jiangsu University from January to December 2003. Totally 30 mice of either sex weighing 18-20 g were selected and subjected to magnetic filed exposure using a self-designed ferrite magnet apparatus.METHODS: The mice were equally randomized into normal control group and 4 exposure groups exposed to magnetic field of (24.6±4.2) mT,(42.0±2.1) mT, (63.5±3.0) mT, and (85.1±2.9) mT, respectively. The mice in the 4 exposure groups were exposed to static magnetic field of the specified intensity for 2 hours twice a day, while those in the normal control group were subjected to the sham exposure apparatus without magnetic field at scheduled time points every day. After 15 days of exposure, the mice were sacrificed and the GSH-Px activity and the MDA content in the hepatic tissue were assayed.MAIN OUTCOME MEASURES: GSH-Px activity and MDA content in hepatic tissue of the mice.RESULTS: Thirty mice entered the final analysis without losses. MDA content in (24.6±4.2) mT and (42.0±2.1) mT groups were obviously lower than that in the normal control group [(12.70±0.53), (12.96±0.72), and (17.62±0.91) μmol/g, respectively, F=10.4, 9.89, P ＜ 0.01]. The GSH-Px activity in the hepatic tissue in (24.6±4.2) mT and (42.0±2.1) mT groups were obviously higher than that in the normal control group [(143.36±8.34),(150.69±12.00), (87.51±11.34) μkat/g, respectively, F=10.0, 11.3, P ＜ 0.01].CONCLUSION: Static magnetic field of appropriate intensity can lower MDA content and enhance the GSH-Px activity in the hepatic tissue of mice, and may also improve the activity of antioxidase and reduce the production of lipid peroxidation to diminish the consequent injuries and delay the aging process.

Objective To study the effect of static magnetic field (SMF) on levels of lipid peroxidation in liver kidney and brain tissues in mice. MethodsThirty mice were randomly assigned to groups A,B,C and D, and exposed to static magnetic fields with four different intensities of(24.6?4.2)mT, (42.0?2.1)mT, (63.5?3.0)mT, (85.1?2.9)mT, respectively, for an average of 4 hours daily for 15 days. Then the mice were sacrificed and the amount of MDA in liver, kidney and brain tissues in mice were measured. ResultsThe amount of MDA were significantly decreased in the liver and kidney in rat exposed to (24.6?4.2)mT, (42.0?2.1)mT MSF as compared with that in the control group( P

A multi-stage stratified sampling method and a self-designed questionnaire were used to evaluate the prevalence of conjunctivitis symptoms and associated factors among the Beijing residents.In total,12 890 residents aged over 18 years were recruited from 6 districts.The reported prevalence of conjunctivitis symptom at the last years was 1.60％.Self-reported health condition and personal health behaviors were risk factors associated with conjunctivitis among adult Beijing residents.No significant difference existed between different districts,age groups,educational levels,gender and races.Conjunctivitis symptom among Beijing residents was related with health condition and health behaviors.More measures should be taken to cultivate the health model of behaviors.

The self-microemulsion formulation of potassium dehydroandrographolidi succinas (PDS) has been optimized and the performance in vitro has been evaluated preliminary. Kinds of prescription accessories were screened by solubility based on the emulsifying result and efficiency, particle size of emulsions. The optimal formulation composition and compatibility proportion were determined by orthogonal design and pseudo-ternary phase diagrams. The appearance, particle size, Zeta potential and stability of this formulation were also investigated. The optimized prescription of PDS was 10% MCT, 40% Tween-20 and 50% glycerol. It can spontaneously form a transparent pale blue opalescent emulsion with emulsification time 31.27 s, particle size 37.1 nm, Zata potential -17.4 mV and good stability.

Objective:To observe the etiological distribution, clinical presentations and imaging features of pulmonary mycosis that is diagnosed by pathology.Methods:The etiological distribution, clinical presentations and imaging features of patients with pulmonary mycosis, who were collected in the Affiliated Hospital of Jining Medical University from January 2018 to July 2020, were retrospectively analyzed. The diagnosis of all the patients were confirmed by pathological examination, of lung or bronchi tissue that were obtained through operation, bronchoscope or percutaneous lung puncture biopsy.Results:There were 26 patients' (60.47%, 26/43) pathological specimens were obtained by operation, 14 cases (32.56%, 14/43) were obtained by bronchoscope, and 3 cases (6.98%, 3/43) were obtained by percutaneous lung puncture biopsy. Of the 43 patients who were diagnosed pulmonary mycosis by pathology, 27 patients (62.79%, 27/43) suffered from pulmonary aspergillosis, 11 patients (25.58%, 11/43) suffered from pulmonary cryptococcosis, 3 patients (6.98%, 3/43) suffered from pulmonary mucormycosis, and 2 patients (4.65%, 2/43) suffered from pulmonary candidiasis. There were 27 patients (62.79%, 27/43) with pulmonary fungal disease complicating risk factors of fungal infection, including diabetes mellitus (23.26%,10/43), malignant tumor (16.28%, 7/43), bronchiectasis (9.30%, 4/43), hepatitis B virus (HBV) carrier (6.98%, 3/43), taking glucocorticoids (4.65%, 2/43), pulmonary tuberculosis (4.65%, 2/43), and chemotherapy following colon carcinoma operation (2.33%, 1/43). The common clinical presentations included cough (55.81%, 24/43), expectoration (48.84%, 21/43), hemoptysis (37.21%, 16/43), fever (20.93%, 9/43), gasping (18.60%, 8/43), chest pain (16.28%, 7/43), and hoarseness (3.13%, 1/43). Imaging features of chest included lung nodes in 20 cases (46.51%, 20/43), vascular welt sign in 12 cases (27.91%, 12/43), exudative process in 10 cases (23.26%, 10/43), lung mass or consolidation in 8 cases (18.60%, 8/43), cavitary lesions in 7 cases (16.28%, 7/43), thicken bronchus wall and narrow lumina in 6 cases (13.95%, 6/43), air crescent in 5 cases (11.63%, 5/43).Conclusions:The pulmonary aspergillosis and cryptococcosis are mainly in pulmonary mycosis diagnosed by pathology. The common complications are diabetes mellitus and malignant tumor. The common clinical presentations are cough, expectoration, and hemoptysis. The main imaging features of chest are lung nodes and vascular welt sign can be found in most of pulmonary cryptococcosis.

Objective To investigate prevalence and risk factors of urgency urinary incontinence (UUI) among adult women in Beijing.Methods Multiple-stage stratified sampling was used to recruit women equal to and more than 20 years old from 48 communities ( villages and neighborhoods ) in six districts of Beijing,by household interview with a standardized questionnaire to collect information of demographic characteristics,delivery history,health conditions and UUI related clinical data.Data analysis was performed by SPSS software version 16.0.Results Totally,3058 adult women completed the survey,with an overall prevalence of UUI of 1.7 % (52/3058).Distribution of age,cultural background,family income,number of pregnancy,number of abortion,delivery history,history of chronic diseases,general surgery,pelvic surgery,abdominal pain and abdominal distension were found significantly different between UUI participants and non-UUI ones with univariate analysis ( all P ＜ 0.05 ).Results of multivariate logistic regress analysis showed that number of pregnancy ( OR = 1.29,95% CI = 1.06-1.58 ),history of chronic diseases ( OR = 2.53,95% CI = 1.38-4.62 ) and history of abdominal pain ( OR = 2.32,95%CI= 1.10 -4.91 ) all significantly associated with UUI.Conclusions UUI associates with complicated factors and its prevention and intervention at communities is necessary targeting at related factors.