OBJECTIVE:To establish HPLC method for the simultaneous determination of calcium lactate and calcium gluconate in compound calcium gluconate oral solution.METHODS:The test was performed on C 18 column with column tem?perature at25℃;the mobile phase was composed of0.025mol/L NaH 2 PO 4 (pH=2.50)with a flow rate of1.0ml/min and sam ple size of20?l;the detection wavelength was210nm.RESULTS:The calibration curves were linear over the range of0.719～46.040mmol/L(r=0.9999)for lactic acid and0.315～20.160mmol/L(r=0.9999)for gluconic acid.The average recovery rates of which were99.0%(RSD=1.65%)and100.5%(RSD=1.36%),respectively.CONCLUSION:This method is fast,simple,accurate,and it can be employed directly without isolation to determine the content of calcium lactate and calcium glu?conate simultaneously and to control the quality of compound calcium gluconate oral solution as well.

Objective To explore the clinical value of the disposable uterine cavity tissue suction tube in diagnosing abnormal u‐terine bleeding .Methods Seventy‐five patients ,who needed an endometrial biopsy because of abnormal uterine bleeding ,were se‐lected for this study .An endometrial biopsy was performed by a disposable uterine cavity tissue suction tube before the conventional suction dilatation and curettage (D&C) .The sample satisfactory rate and the diagnose accordance rate of the two methods were compared .Results The sample satisfactory rate of the disposable uterine cavity tissue suction tube and of the D&C was 85 .3%(64/75) and 94 .7% (71/75) respectively .The difference was not statistically significant(P>0 .05) .The diagnose accordance rate of the disposable uterine cavity tissue suction tube and the D&C was 90 .3% (56/62) and 93 .5% (58/62) respectively .The differ‐ence was not statistically significant(P>0 .05) .Conclusion To a certain extent ,endometrial biopsy performed by disposable uter‐ine cavity tissue suction tube can be a substitute for D&C as the initial inspection to assess abnormal uterine bleeding ,for its econo‐my ,efficiency and safety .

BACKGROUND: It is proposed that elevated serum homocysteine is an important independent risk factor for ischemic stroke (IS), and 5, 10-methylenetetrahydrofolate reductase (MTHFR) is the key enzyme for homocysteine metabolism. The relationship between genetic mutation of MTHFR and IS remains controversial.OBJECTIVE: To examine the association of hyperhomocysteinemia and two MTHFR gene polymorphisms with IS in Northwest Chinese population.DESIGN: Case-control study.SETTING: Department of Neurology, First Hospital Affiliated to Jilin University, and Department of Neurology, Xijing Hospital, Fourth Military Medical University of Chinese PLA.PARTICIPANTS: Ninety-seven consecutive patients with ischemic stroke (71 males and 26 females) treated between November 2001 and May 2002were recruited, who were diagnosed by CT scan or MRI in the Department of Neurology, Xijing Hospital, Fourth Military Medical University of Chinese PLA. The control group consisted of 94 subjects (58 males and 36 females) without history of ischemic stroke. All the subjects were free of intracranial hemorrhage, cancer, renal dysfunction, and none used multivitamins or estrogen.METHODS: Serum homocysteine was measured by fluorescence polarization immunoassay. Polymerase chain reaction-restriction length polymorphism (PCR-RFLP) method was employed to detect the genotype at the two sites of C677T and A1298C in MTHFR gene.MAIN OUTCOME MEASURES: Serum homocysteine levels and the genotypic frequency frequencies of the two mutations of MTHFR.RESULTS: The 677T allele frequency was 59.3% in IS patients and 44.7% in the controls, showing significant differences (P=0.006), but no difference in 1298C allele frequency was detected between the two groups (22.7% vs 19.7%, P ＞ 0.05). Homozygous 677TT genotype was closely associated with hyperhomocysteinemie (P ＜ 0.01). In multivariate logistic regression analysis,677T gene mutation and hyperhomocysteinemie were all associated with the IS, with an OR of 1.870 and 1.031 (P＜ 0.05), respectively.CONCLUSION: Hyperhomocysteinemie is a risk factor of IS, and C677T mutation significantly increases homocysteine levels, and serves also as an independent genetic risk factor of IS.

Objective To explore the change of perioperative serum alpha-fetoprotein (AFP) and carcinoembryonic antigen (CEA) in patients with primary liver cancer undertaken transcatbeter arterial chemoembolization (TACE).Methods One hundred and two patients with primary liver cancer were performed with TACE treatment.The levels of AFP and CEA after treatment 3 d,1 week,3 weeks were detected and compared.Results The levels of AFP after treatment 3 d and 1 week were higher than that before treatment,but there was no significant difference [(549 ±30),(530 ±30) μg/L vs. (527 ±40) μg/L] (P ＞ 0.05).After treatment 3 weeks,the levels of AFP significantly decreased than that before treatment [ (351 ± 20) μ g/L vs.(527 ± 40) μ g/L ] (P ＜ 0.05 ).The levels of CEA after treatment 3 d,1 week,3 weeks were significantly lower than that before treatment [(410 ± 15),(350 ± 20),(200 ± 10) μg/L vs.(570 ±22) μ g/L] (P ＜0.05).After treatment 3 weeks,the levels of AFP and CEA achieved normal.Conclusions TACE in treatment for primary liver cancer can achieve better therapeutic effect,significantly improve the symptoms,decrease the levels of AFP and CEA.To control the indication and contraindication,perform TACE in time can decrease mortality,improve prognosis,and is valuable in clinic.

Objective To observe the effects of electro-acupuncture on the expression and inhibition of DNA binding protein 2 (Id2) and myelin basic protein (MBP),and to explore the mechanism of remyelinization after compressive spinal cord injury (CSCI) in rats.Methods Fifty-four SD rats were randomly divided into a control group and a treatment group,and each was further subdivided into 3 time point subgroups:3,7 and 14 days.There were 9 rats in each subgroup.The CSCI models were made with a self-designed method.The acupuncture points Jiaji (EX-B2),bilateral Zusanli (ST36) and Taixi (KI3) were selected for treatment.Electro-acupuncture (continuous wave,2 Hz,1.5 V)was applied to the bilateral Zusanli (ST36) and Taixi (KI3) points.The control group received the injury but no treatment.The changes in the ultrastucture of the nerve fibers＇ white matter were de-termined by transmission electron microscopy (TEM).The alterations in the expression of MBP and Id2 were observed by double labeled immunofluorescence and Western blotting on the 3rd,7th and 14th day after the injury.Results TEM showed that the myelin sheaths in the control group had degenerated,swollen,and even broken down after CSCI.Changes to the myelin sheaths in the treatment group were milder than those in the control group.The immunofluorescence results showed the amount of Id2-immunoreactive oligodendrocytes in the control group to be (20 ±2) on the 3rd day after CSCI,becoming (16 ± 1) on the 14th day.The differences among the 3 control subgroups were not statistically significant.The amount of Id2-immunoreactive oligodendrocytes in the treatment group was (13 ± 1) on the 3rd day,reaching a minimum the 14th day.The differences among the 3 treatment groups were statistically significant.The differences compared with the control group at the same time points were also statistically significant.Western blotting showed that the expression of Id2 in the contrast and treatment groups was (1.12 ±0.12) and (0.67 ±0.01) respectively on the 3rd day after CSCI,and both decreased with time.The expression of Id2 in both groups reached their minima ((0.86 ±0.02) and (0.25 ±0.01) respectively) on the 14th day.The difference between the treatment groups and the contrast group was statistically significant at each time point.The expression of MBP in the contrast and treatment groups at day 3 was (0.44 ± 0.02) and (0.67 ± 0.04) respectively,and these increased with time.The expression of MBP in both groups peaked at the 14th day (at (0.95 ± 0.04) and (1.74 ± 0.09) respectively).These differences were again statistically significant.Conclusion Electro-acupuncture can regulate the expression of Id2 and MBP after CSCI.The down-regulation of Id2 which controls MBP negatively and the up-regulation of MBP may contribute to remyelination in the injured spinal cord.

Objective To explore the histological properties of isolated chondrons and chondrocytes from rabbit knee cartilage,and to determine if these properties vary with age.Methods Three groups of rabbit knees were evaluated according to different age:(1) young (2 months,n=10);(2) adult (8 months,n=10);and (3) old (31 months,n=10).The cartilage structure,proteoglycan,collagen-2,and collagen-6 content were determined by light microscopic using hematoxylin-eosin (HE),Toluidine Blue,and col-2,6 staining.The chondrons were enzymatically isolated using 0.3 g/L dispase and 0.2 g/L collagenase-2 by shaking for 3 hours.The morphology and composition of isolated chondrons were observed by HE and collagen-6 immunostaining staining after overnight coverslip monolayer culture under a microscopy.Results The chondrocytes became sparser and the total content of proteoglycans and collagen-2 were decreased in the articular cartilage with age.Compared to the chondrocytes,the surrounding rim or capsule was more obvious in the isolated chondrons,and they exhibited obvious differences in shape.The cells within one cluster from different age groups were similar to the morphology observed in cartilage in situ.The adult and old chondrons generally possessed a thicker pericellular matrix with more enclosed cells,and the chondrons contained more cells can reach 47％.Conclusion These findings further suggest that the properties of the chondrons and pericellular matrix have an important influence on the biomechanical microenvironment of the knee joint cartilage degeneration that occurs with age.

The aging of population and the increasingly morbidity rate of chronic disease had brought great influence on public health and economy.And community whose scientific management model could improve effectivity was a main prevention place for chronic disease.Thus on the basis of domestic and foreign literatures,several types of chronic disease community management models were introduced,and aimed at providing a reference for community chronic disease management.

Serum triglyceride ( TG ) , total cholesterol ( TC ) , low density lipoprotein cholesterol ( LDL-C) , high density lipoprotein cholesterol ( HDL-C) , uric acid ( UA) levels and fasting blood glucose ( FBG) were measured in 67 patients with chronic spontaneous urticaria ( CSU ) and 66 healthy subjects ( controls).Results showed that the rates of increased serum TG and FBG levels in CSU patients were higher than those in controls ( 19% vs.6%,χ2 =5.309, P <0.05; 12% vs.1%,χ2 =4.194, P <0.05, respectively);however, there were no significant differences in abnormal rate of TC(7%vs.3%) , LDL-C (4%vs.1%), HDL-C(6%vs.3%)and UA(6%vs.1%) between CSU patients and healthy controls(all P>0.05).The rate of rising FBG in CSU patients accompanied by angioedema(4/9)was higher than that in CSU patients without angioedema(7%,χ2 =7.181,P<0.05).

Objective To investigate the mechanism of drug resistance mediated by micF gene and outer membrane porin F ( OmpF) in Shigella strains. Methods Shigella strains were isolated from stool samples of patients who presented to the Second Hospital of Tianjin Medical University with acute diar-rhea in 2015. Antibiotic susceptibility test was performed to screen out the multidrug-resistant and non-multi-drug-resistant strains. The ompF gene was amplified by PCR. The micF and ompF genes at transcriptional levels in the two groups of strains were detected by quantitative real-time RT-PCR. Intracellular concentra-tions of ciprofloxacin in the two groups of Shigella strains were measured by automatic microplate reader. Re-sults According to the result of antibiotic susceptibility test, 13 strains that were resistant to 3 or more than 3 antibiotics were classified into the multidrug-resistant group, while the other 8 strains that were sensitive to all antibiotics used in this study or only resistant to 1 or 2 antibiotic were classified into the non-multidrug-re-sistant group. All of the 21 Shigella strains carried the ompF gene. Compared with the non-multidrug-resist-ant strains, the multidrug-resistant strains showed higher expression of micF gene, but lower expression of ompF gene. The differences in micF and ompF genes between the two groups were statistically significant. The result of correlation analysis suggested that there was a negative correlation between micF and ompF genes (r=-0. 244). The intracellular concentrations of ciprofloxacin in multidrug-resistant strains were low-er than those in the non-multidrug-resistant strains (P<0. 001). Conclusion The decreased expression of OmpF was one of the possible mechanisms of multidrug-resistance in Shigella strains. The micF gene was negatively related to the expression of OmpF. Moreover, the decreased intracellular concentrations of cipro-floxacin in multidrug-resistant strains might be related to the decreased expression of OmpF.

0.05). The mean ADC value obtained in poor group was significantly lower than that obtained in satisfactory group (t = 4.81,P