Objective:To compare the performance of chemiluminescent microparticle immunoassay ( CMIA) and enzyme-linked immunosorbent assay ( ELISA) for the determination of Anti-PR3 and Anti-MPO.Methods:Concentration of Anti-PR3 and Anti-MPO in serum samples from 166 patients with autoimmune diseases and 50 healthy donors were determined by using CMIA (Method A) and ELISA(Method B),respectively.The results from both assays were analyzed and compared by statistical methods .Results:Method A showed better intra-assay reproducibility and inter-assay reproducibility than Method B for the determination of high ,medium and low levels of control serum .Both methods met the accuracy requirement .The correlation coefficient of Anti-PR3 and Anti-MPO were 0.987 8 and 0.989 6 for Method A and Method B ,respectively.And the Kappa coefficients were 0.897 and 0.882 for Method A and Method B,respectively.Conclusion:The performance of Method A is superior to Method B for the deter-mination of Anti-PR3 and Anti-MPO, which makes Method A to be a potentially better choice for clinical application .

Objective Qualitative research was used to study the psychological experience of caregivers of children with Down syndrome so as to give them necessary support. Methods Objective sampling method was used to select 8 children with Down syndrome caregivers as the research object, using unstructured interviews to collect data and carefully read, analyze, encode and collect the records of interviews, and then sublimate the theme concept reflecting the psychological experience of the research object. Results A total of 4 themes had been raised:the pain and helplessness of the child, the stress and exhaustion of the body, the feeling of hopeless, the desire for support and understanding. Conclusions The psychological stress of the main caregivers of Down syndrome is great, we should help them relieve the pressure, instruct them to train the children correctly, make them strengthen their self-confidence and take better care of their children.

Objective To investigate the expression and significance of bin 1,C-myc in bladder urothelial carcinoma.Methods SP method was used to detect the expression of bin 1,C-myc protein in paraffin specimens from bladder urothelial carcinoma of 84 cases and mucosa of 11 cases,and its relationship with clinical pathological charac-teristics was analyzed.Results The positive expression rate of bin1 in normal bladder tissues was 81.81%,that in bladder urothelial carcinoma was 46.43%,the difference was not significant (χ2 =4.873,P=0.051).No expression of C-myc was observed in normal bladder tissue ,the positive expression rate of C-myc in bladder urothelial carcinoma was 52.38%,the difference was statistically significant (χ2 =10.733,P=0.001).The expression of bin1 in invasive bladder urothelial carcinoma was significantly lower than the non-infiltrating type(χ2 =7.685,P =0.007),with increased histological grade and UICC stage ,the positive rate of bin1 expression decreased (χ2 =15.817,P=0.000;χ2 =11.104,P=0.010).The expression of C-myc had no relationship with the histological classification ,histological grade and UICC stage .Correlation analysis showed that the expression of bin 1 was negatively correlated with histologi-cal classification,histological grade and UICC stage (r=-0.302,P=0.005;r=-0.411,P=0.000;r=-0.302, P=0.005).With the increased expression of bin1,C-myc expression decreased,but the difference was not statistical-ly significant.Conclusion Low expression of bin1 or loss of bin1expression were associated with the progression of bladder urothelial carcinoma , the expression of C-myc was related with bladder urothelial carcinoma lesions .The results suggest that bin1 may be predictive factor for prognosis of urinary bladder urothelial carcinomas ;bin1,C-myc may be viewed as molecular targets for tumor chemotherapy .

Objective To investigate the expression and significance of IDO and c-myc in bladder urothelial carcinoma.Methods IDO mRNA expression from fresh tumor and mucosa specimens from 20 cases were detected by fluorescence quantitative PCR,and SP was used to detect the IDO,c-myc protein in paraffin-embeded specimens from 84 cases and mucosa specimens from 22 cases.Results In bladder urothelial carcinoma,IDO,c-myc protein expression level had no relationship with age and sex.Expression of IDO protein in invasive bladder urothelial carcinoma was significantly higher than that of no-invasive (x2 =5.600,P =0.018).With the increase of the histological grade (x2 =20.268,P =0.000) and UICC stage (x2 =12.075,P =0.007),the positive expression rate of IDO protein was increased.There was not positive expression of c-myc protein in normal bladder tissue,but in bladder urothelial carcinoma,44 cases (52.4 ％) were positive expression (x2 =10.733,P =0.001).The expression of c-myc protein had no relationship with the histological classification,histological grade and UICC stage.In bladder urothelial carcinoma tissue,IDO protein expression level was positively correlated with c-myc protein expression (r =0.205,P =0.047),and was positively correlated with the histological classification,histological grade and UICC stage (r =0.258,P =0.018; r =0.491,P =0.000; r =0.365,P =0.001).Expression of IDO mRNA in bladder urothelial carcinoma (7.696 1±1.745 2) was significantly higher than that in normal bladder tissue (6.397 0±1.205 1)(t =2.367,P =0.023).The average expression level of IDO mRNA in bladder urothelial carcinoma of Ta-T1 stage was 6.803 4±1.567 5,which was significantly lower than that in T2-T4 stage (9.183 8±0.690 3) (t =4.955,P =0.000).The average expression levels of IDO mRNA in grade Ⅰ,Ⅱ,Ⅲ bladder urothelial carcinoma were 7.058 7±1.771 5,7.934 2±1.530 5,9.290 7±0.574 5,respectively,which were increased with the grade increasing (t =2.729,P =0.011).Conclusions The high expression of IDO correlates with bladder urothelial carcinoma progression,and expression of c-myc is irrelevant with bladder urothelial carcinoma progression,but maybe associate with bladder urothelial carcinoma occurrence.IDO may be a predictive factor of prognosis.IDO and c-myc may be therapeutic target in the treatment of bladder urothelial cancer.

The determination of pantothenic acid in infant formula was carried out by means of HPLC. The sample was dissolved in deionizid water and put in an ultra-sonic generator for 15 minutes, adjust pH to precipitate protein. After centrifugation the supernatants were used as test sample for HPLC analysis. Column: Bondapak C18, Detector: ultraviolet 200nm, and 0.01M KH2PO4/CH3OH as eluant. Coefficient of variation was 6.58% and recovery was 93.78%.The method might be applicable to milk and milk products and alsoto the samples containing free pantothenic acid such as wheat germ and flour.

Objective:To analysis the clinical characteristics of pulmonary hypertension (PH) complicating pregnancy, then to explore the delivery time and the monitodng as well as the treatment during perinatal peri-od.Methods:The data of 10 cases with PH treated in our hospital from June 2005 to January 2009 were retro-spectively analyzed.Reaults:1 case was primary pulmonary hypertension(PPH) ; 9 cases were secondary PH (SPH), in which 4 cases were rheumatic heart disease and 5 cases were congenital heart diseases.3 cases were slight PH,6 cases were moderate PH, and 1 were severe group.4 cases NYHA class were Ⅰ～Ⅱ and 6 cases NYHA class were Ⅲ～Ⅳ.4 cases were term delivery,5 cases were premature delivery, and 1 got artifi-cial abortion.8 cases were cesarean section, and 1 was vaginal delivery.2 cases were very low birth weight infants, 1 infant was death and 1 mother was death.Conclusions:The patient of PPH should avoid concei-ving.For SPH patients whether to conceive depends on cardiac function, the level of pulmonary arterial pres-sure and should better get pregnancy after surgery or medication.It should terminate pregnancy in the first tri-mester for moderate or severe patients.Cesarean section is more suitable for those in the second or third tri-mester.The prognosis of the mother and neonate depends on several factors.

Objective To detect the expression and significance of suppressor of cytokine signaling 3(SOCS3) in the placentas of pregnant women with intrahepatic cholestasis of pregnancy (ICP). Methods Totally, 44 ICP gravidas, including 21 severe ICP and 23 mild ICP who delvered through cesarean section at the Second Xiangya Hospital of Central South University from April 2008 to January 2009, were selected as the ICP group, and another 25 healthy pregnant women were chosen as control. Placentas of the above gravidas were collected and the expression and localization of SOCS3 were determined by immunohistochemical peroxidase streptomyces-avidin link (SP) method (indicated by the percentage ofpositive cells and average gray scale) and the levels of interleukin-10 (IL-10) and interferon-γ (IFN-γ)from placenta homogenation were measured by enzyme linked immunoadsorbent assay (ELISA). Results(1) SOCS3 were expressed in placentas of both groups mainly in the intracytoplasma of trophocyte.However, weakly positive, positive, and strongly positive expressions were found in the severe ICP, mild ICP and the control group, respectively. Almost no expression was detected in membrane and nucleus of the trophoblasts. (2) The percentage of SOCS3 positive cells in the severe ICP group was significantly lower than in the control and the mild ICP group, respectively [ (0.15±0.08)% vs (0.69±0.12)% and (0.42±0.09) % , P < 0.01 ]. The average gay SOCS3 in placental tissue in the severe ICP group was significantly higher than that in control and mild ICP group, respectively (204 ±7 vs 81 ±7 and 147 ± 7, P <0.01 ).(3) Significant lower level of IL-10 in placenta homogenation was found in the severe ICP group than in the control and mild ICP group [ ( 1.16 ± 0.68) μg/L, vs ( 1.39 ± 0.08) μg/L and ( 1.22 ± 0.75 ) μg/L,P < 0.01 ]. (4) The opposite results were found in the level of IFN-γin trophoblasts and the ratio of IFN-γ/IL-10 [ severe ICP group: ( 16.8 ± 0.7 ) μg/L and 16.02 ± 2.79; control group: ( 10.5 ± 0.3 ) μg/L and8.56 ±0.14; mild ICP group: ( 13.4 ±0.5) μg/L and 8.56 ±0.14, P <0.01]. (5) Negative correlation was shown between the percentage of SOCS3 positive cells in trophoblasts and the ratio of IFN-γ/IL-10 ( r =-0.685 and -0.702, P < 0.01 ), and the average gay SOCS3 was positively correlated with the ratio of IFN-γ/IL-10 (r=0.621 and 0.891, P<0.01) in both mild and severe ICP group. Conclousions SOCS3 may participate in the pathogenesis of ICP and its expression may affected by the severity of ICP, and SOCS3may also play a role in the immunological regulation in ICP patients.

Objective To investigate the role of CD4+CD25+regulatory T cells and CD4+CD25gigh regulatory T cells in peripheral blood and decidua in the pathogenesis of intrahepatic cholestasis of pregnancy (ICP).Methods Peripheral blood and decidua CD4+CD25+regulatory T ceHs and CD4+CD25high regulatory T cells in 30 ICP patients(15 mild ICP and 15 severe ICP)and 28 normal pregnant women were analyzed by flow cytometry.Results The percentage of CD4+CD25+ regulatory T cells and CD4+cD25high regulatory T cells in the CD4+T cells population in both peripheral blood and decidua in ICP patients were significantly lower than those in control women[(7.96±1.32)%vs(17.05 ±2.86)%,(17.18±2.27)%vs(32.01±3.88)%;(0.78±0.22)%vs(1.71±0.69)%,(2.25±0.89)%vs(8.30±1.13)%;P<0.01].Meanwhile,a significantly higher percentage of CD4+CD25+regulatory T ceHs and CD4+CD25high regulatory T cells in the C4+T cells population was observed in all decidua samples compared to peripheral blood both in ICP patients(P<0.01)and in control women(P<0.01).In addition,the percentages ofCD4+CD25+ regulatory T cells and CD4+CD25high regulatory T ceHs in the CD4+ T cell population in both decidua and peripheral blood in severe ICP[(15.94±1.95)%,(7.17±1.17)%,(1.87±0.90)%,(0.68±0.19)%]were lower than those in mild ICP [(18.43±1.90)%,(8.74±0.96)%,(2.62±0.72)%,(0.89±0.20)%] and normal pregnancy(all P<0.05).Conclusions CD4+CD25high regulatory T cell may play all important role in the pathogenesis of ICP and control of disease progression.

The "free" and "bound" forms of cholinc in food were determined by a rapid method in which extraction and hydrolysis were accomplished simulta- neously with a barium hydroxide-methanol-chloroform mixture. The choline was isolated by adsorption on a Florisil column. By passing ammonium rei-neckate through the column, a pink band of choline reineckate was formed. The choline reineckate could be eluted by acetone and its concentration was determined by measuring the absorbance of eluate of the reineckate band by spectrophotometer at 526nm.This method is accurate, rapid, easy to handle. The RSD is 2.43%. The recoveries of added choline ranged from 96.7% to 101.7%.

Objective The existing standards of skeletal development for Chinese were revised in this study due to the accelerated growth and development of Chinese children in the past 20 years.Methods Seventeen thousand and four hundred and one (17,401) healthy children of Han nationality (8,685 boys, 8,716 girls), aged 0～20 years, from cities of Shanghai, Guangzhou, Wenzhou, Dalian and Shijiazhuang were served as the sample for standardization. The radiographs were evaluated by a single observer using TW3 method. Furthermore, the new skeletal maturity events were chosen in 4, 5, 6, 7 stages of first metacarpal, proximal and middle phalanges, as well as in 5, 7 stages of radius and 5 stage of ulna in accordance to TW3-RUS. As a result, each stage was divided into two new stages. The fusion stages of radius and ulna were divided to 4 phases. The skeletal maturity scoring was computed by “scaling of categorized attributes” to minimize the overall disagreement between the different bones totaled over the standardizing sample. The new method is called RUS-CHN. The means and standard deviations of maturity score transformed by logarithm in each age group were calculated, and were fitted by quadratic and linear functions of age, respectively.Results The percentile standards of TW_3-C RUS, TW_3-C Carpal, RUS-CHN skeletal maturity scores were established. The revised standards are designated as “The Standards of Skeletal Maturity of Hand and Wrist for Chinese of Han Nationality-China 05”. Ages of the complete maturity of TW_3-C RUS, TW_3-C Carpal and RUS-CHN standards are 16, 13.5 and 18 years in boys and 15, 11.5 and 17 years in girls, respectively. In the verified sample of 2,438 children (1,301 boys, 1,137 girls), aged 1～19 years, the differences between skeletal age and chronological age of all age groups were mostly 0.0～0.3 year in TW_3-C RUS, TW_3-C Carpal and RUS-CHN skeletal maturity standards.Conclusion “The Standards of Skeletal Maturity of Hand and Wrist for Chinese of Han Nationality-China 05” are applicable to contemporary Chinese children.