Objective To explore the serological variations for syphilis in infants delivered by treated syphilitic mothers and its influencing factors. Methods Totally, 146 singleton gravidas, who had been treated for syphilis during pregrancy from January 2006 to January 2008 in our hospital, were chosen. Rapid plasma reagin(RPR) and treponema pallidum particle agglutination assay (TPPA) of these mothers before delivery and of the newborns within 3 d after delivery were tested and 92 of the 146 babies were followed up until the age of 24 months. Results (1) Among the 146 neonates, 104 (71.2%) were positive for both RPR and TPPA and 140 (95.9%) TPPA positive only. The RPR positive rate in neonates born to RPR+ + TPPA+ mothers were higher than those born to TPPA+ (only) mothers (81.4% vs 36.4%,χ2 = 25. 3, P<0. 01). 90.4% of the RPR+ neonates (94/104) showed lower or equivalent RPR titers compared to their mothers. (2) Among the 92 babies bein g followed up, the seroreversion of RPR were found in 98. 2%(n = 56) of the 57 babies, who were RPR+ +TPPA+ at delivery, at the 6 months and 100% (n=57) within 8 months, with the peak time within 2 months after birth (78. 9%, n = 45). While, 100% of the babies were found to be TPPA-within 24 mo with the peak time at 10～18 mo (64. 9%, n = 37). For those babies with TPPA+ at delivery, all turned to be TPPA- at 18 mo, with the peak time at 6 ～ 12 mo (57. 1%, n = 20). (3) The seroreversion time of babies with maternal RPR between 1:1～1:4 was later than those with maternal RPR (P<0.05). The seroreversion time of babies with maternal RPR titer of 1:4 was longer than those with maternal RPR titer of 1 > 1 [(2.5±0.8) mo vs (1. 2±0. 4) mo,P<0. 01]. However, the maternal RPR titer did not affect the TPPA reversion time (P > 0.05). The seroreversion time of RPR in infants with neonatal RPR titer of 1 : 4 was later than those with neonatal RPR titer of 1:1 [(3.7±0. 9) mo vs (2. 3±0. 6) mo,P<0. 01], and babies with RPR titer at 1 : 1 - 1 :4 showed longer duration than those with neonatal RPR- in TPPA seroreversion [(11. 2±2. 8) mo, (12.2±2.9) mo, and (11.0±2.2) mo vs ( 6. 9±2. 1) mo, P< 0.01, respectively]. Conclusions Most infants born to syphilitic mothers are serological positive for syphilis despite of standard maternal treatment during pregnancy. Infants, with higher maternal RPR titer during the pregnancy or at delivery, may persist to be serological positive for syphilis for a longer perieod, but all will turn to negative finally. Long term follow up is recommended for serological positive infants, and the diagnosis of congenital syphilis should be cautious.

Objective To evaluate the immune responses and its dynamic changes of the babies born to hepatitis B surface antigen (HBsAg) positive mothers after combined passive immunoprophylaxis and active immunoprophylaxis. Methods Two hundred and forty-nine infants born to HBsAg positive mothers were enrolled. All of these infants have received both passive immunoprophylaxis by injecting hepatitis B immunoglobuin (HBIG) and active immunoprophylaxis by vaccinated with hepatitis B vaccine simultaneously 12 hours after birth. After that, all infantscompleted the whole vaccination program. The titers of serum HBsAg and hepatitis B surface antibody (HBsAb) of the infants were checked at 7, 12, 24 and 36 months after birth. The data was analyzed by chi square test. Results Infants born to HBsAg positive mothers showed various immune response modes. The no response rate, low response rate and strong response rate were 8.0% (20/249),11.7% (29/249) and 80.3% (200/249) respectively in the 7-month infants, which were 10.8% (12/120), 26.7% (32/120) and 62.5% (75/120) respectively in 12-month infants. The results from further follow-up showed that no response rate, low response rate and strong response rate were 14.8% (4/27), 33.3% (9/27) and 51.9% (14/27) respectively in the 24-month babies and were 14.3 (1/7), 28. 6% (2/7) and 57.1% (4/7) respectively in the 36-month babies. There were statistically significant difference between the 7-month infants group and other groups (x2= 21.98,P＜0.01). The HBsAb titers of high-response infants group declined over time. The infants with higher antibody titers tended to not decline or decline more slowly. In infants who have even achieved HBsAb titers higher than 1000 mIU/mL, 57.6% (19/33) of them showed decreased titers in 36 months. The titer decrease peaked at 24 month after birth (57.9%, 11/19). In infants who have achieved HBsAb titers of 100 to 1000 mIU/mL, 73.8% (31/42) of them showed decreased titers in 36 months. The titer decrease peaked at 12 month after birth (54.8%, 17/31). HBsAg positive infants usually showed no response at 7 month, who accounted for 70% (14/20,x2 = 128.61, P＜0.01) of all no response infants. Ninety-nine percent (189/191) of HBsAg negative infants showed strong responses. The infants born to both HBsAg positive and hepatitis B e antigen (HBeAg)positive mothers tended to show no response. However, the difference between these infants and others was not statistically significant (9.1% vs 5.5%,x2 =0.24,P＞0.05). Conclusions The immune responses of infants born to HBsAg positive mothers after combined passive and active immunoprophylaxis change over time. The non-response status is usually found in HBsAg positive infants. HBsAg negative infants usually show strong response. Infants born to both HBsAg positive and HBeAg positive mothers tend to show low response. It is recommended to follow standard immunoprophylaxis procedure. The follow-up and active monitor are very important during 7 months to 2 years after birth.

The mature seeds and excised embryos of Dalbergia odorifera were used as materials to study the effect of moisture content on their survival, as well as the effect of rapid freezing and vitrification freezing method on seeds and in vitro embryos cryopreservation. The results showed that the germination rate and vigor decreased from 82.67%, 85% to 18.35%, 25% respectively, when the seed moisture content decreased from 15.04% to 8.14%; and the germination rate decreased from 82.67% to 37.50%, 25.37% respectively by vitrification freezing method and rapid freezing method, when the seed moisture content decreased from 15.04% to 9.37%. Among all the moisture content gradient, 12.35% moisture reached the maximal germination rate, which were 63.58% and 50.45% respectively by vitrification freezing and rapid freezing; and when the embryo moisture content was 26.32%, the germination rate decreased from 95.67% to 58.31% and 33.82% respectively by vitrification freezing and rapid freezing. And when the moisture content was in the range of 14.17% -21.34%, the germination rate was a bit of decrease. The experiment results showed that the optimum conditions of seed cryopreservation were: moisture content 12.35%, vitrification freezing; and the optimum conditions of in vitro embryo cryopreservation were: moisture 15.04%, vitrification freezing. In conclusion, the effects of moisture content on germination rate after cryopreservation in D. odorifera seeds and embryo were significant, and vitrification freezing method is much better than rapid freezing method.
Cryopreservation ; methods ; Dalbergia ; chemistry ; growth & development ; Germination ; Seeds ; chemistry ; growth & development ; Water ; analysis

10.3969/j.issn.1007-3969.2013.04.009

Objective To investigate the dynamic changes and the clinical significance of T-cell subsets and serum soluble interleukin-2 receptor (sIL-2R)in neonates with hyperbilirubinemia.Methods Thirty-one neonates with hyperbilirubinemia, admitted to the hospital from Decembr 1,2006 to January 31, 2007, were enrolled and divided into two subgroups: severe jaundice group and mild jaundice group according to the bilirubin level. Thirty-two age-mached healty newborns were as controls(control group Ⅰ). The T-cell subsets and sIL-2R of peripheral venous blood samples from these neonates were measured and compared. Sixteen of these 31 neonates with hyperbilirubinemiawere followed up and another twenty-six age-mached healty newborns were as controls(control group Ⅱ ). The level of serum bilirubin in convalescence of sixteen hyperbilirubinemia neonates and control group Ⅱ were tested and analyzed also. Results The levels of CD3, CD4, CD4/CD8 in the neonates with hyperbilirubinemia were lower compared with those of control group Ⅰ [(54.0±5.1)% vs (62.0±4.7)%, (26.8±5.0)% vs (43.0±4.7)%, 0.8±0.1 vs 1.4±0.2] (P＜0.01), but was higher in convalescence than in peak phase[ (62.4±3.3)% vs (55.1±4.2)%, (43.6±2.5)% vs (26.1±4.4)%, 1.4 ± 0.1 vs 0.8±0.1] (P＜0.01). The peak level of sIL-2R in the hyperbilirubinemia group was (319.4± 185.2) kU/L, higher than that in the convalescence [(129.7±99.3) kU/L] and in the control group Ⅱ [(171.9±102.2) kU/L] (P＜0.01). The serum bilirubin level showed negative correlation with CD4/CD8 ( r = -0.99, P ＜ 0.01 ) and positive correlation with sIL-2R (r=0.95, P＜0.05). The sIL-2R level was negatively correlated with CD4/CD8 (r=-0.92, P＜0.05). Conclusions Neonates, when suffering from hyperbilirubinemia, are immunosuppressed which may recover with the alleviation of jaundice.

Objective To investigate whether and how CD4 + CD25 + regulatory T cells(Tr) affect oxidized low density lipoprotein(oxLDL) induced proinflammatory response in macrophages.Methods Tr were isolated from lymphocyte suspensions by magnetic cell sorting-column and analyzed by flow cytometry.Macrophages were cultured alone,with CD4 + CD25 + Tr or CD4 + CD25 - Tr in the presence of oxLDL for 48 h.The phenotype of macrophages was determined by flow cytometry.NO production was assessed by Griess reaction an iNOS mRNA was isolated by RT-PCR.ELISA were used to measure the production of cytokine/chemokine like MCP-1,MMP-9,TNF-ct,TGF-β and IL-10 in macrophages response to oxLDL.Results Our data showed that with oxLDL challenge,the Tr modulated macrophages have decreased NO production and iNOS expression,decreased HLA-DR and CD86 expression,and down-regulated proinflammatory cytokine/chemokine production.Conclusion Tr can inhibit the proinflammatory properties of macrophages and steer macrophage differentiation toward an anti-inflammatory cytokine producing phenotype.

OBJECTIVETo compare the clinical effects of different surgical methods for the epicanthus corrective surgery.

METHODSCanthoplasty with asymmetric Z-flap is applied in 46 cases, Y-V advancement procedure for epicanthoplasty is applied in 42 cases. The epicanthus aesthetic measurement were measured and calculated by software before and after surgery, the diameter of the iris was measured as a reference value,and the postoperative scar was assessed by VSS scale. At the same time, by measuring the lateral canthal distance, the accuracy of the measurement method can be verified.

RESULTSAll patients were satisfied with the long-term results and there were no recurrences of the epicanthal fold. The shortening ratio of the ICD is 8.36% in the group with the Z-plasty, and 5.88% in Y-V plasty. the lateral canthal distance have no diffrence before and after surgery.

CONCLUSIONSTwo surgical methods can get good results. The magnitude of correction in Z-plasty may larger than Y-V plasty, but postoperative retraction may existed in Z plasty.

Blepharoplasty ; methods ; Cicatrix ; Esthetics ; Eyelids ; surgery ; Humans ; Recurrence ; Software ; Surgical Flaps

Objective To provide the experimental basis for the further research of the interacting proteins with Stathmin ,the Stathmin gene Pichia pastoris expression system was constructed ,the expressed Stathmin product was purified and identified .Meth‐ods Stathmin gene was amplified from tumor cell line of SKBR3 by PCR method and cloned into the yeast expression vector pPIC3 .5K .The recombinant vector pPIC3 .5K‐Stathmin was constructed and transformed into Pichia pastoris GS115 .The positive clones were screened by YPD medium containing Geneticin 600 μg/mL .Expression was induced with 0 .5% methanol and expres‐sion products were identified by SDS‐PAGE and Western Blotting .Results DNA sequencing result showed that the gene fragment was consistent with Stathmin gene sequence .pPIC3 .5K‐Stathmin was selected from YPD culture medium containing Geneticin ,and the positive clones were identified by PCR .SDS‐PAGE showed that a 37 × 103 protein band could be seen on the PAGE gel after Coomassie Blue staining ,which was further confirmed and identified as Stathmin protein by Western Blotting .Conclusion Stathmin yeast expression vector is successfully constructed and expressed in Pichia pastoris ,which laid the foundation for the study of inter‐acting proteins with Stathmin ,and for the preparation of the biological treatment drugs of Stahtmin target .

Objective To explore the risk factors for infection following percutaneous nephrolithotomy(PCNL), and provide the basis for prevention of postoperative infection.Methods 96 patients who were performed PCNL in a hospital between August 2010 and August 2013 were chosen,clinical data of patients were retrospectively analyzed, the occurrence of postoperative infection,risk factors and isolated pathogens were analyzed.Results 35 patients (36.46%[35/96])developed infection following PCNL.Univariate analysis revealed that risk factors for postopera-tive infection were the size and shape of stone,duration of operation,and intraoperative perfusion (all P <0.05). 96 patients before operation and 18 patients after operation were performed bacterial culture for urine,a total of 39 strains were isolated,the main isolated pathogens was Escherichia coli (n=12),followed by Pseudomonas aerugi-nosa (n=8),Streptococcus viridans (n =5 ),Klebsiella pneumoniae (n =4)and Enterobacter cloacae (n =3 ). Conclusion Infection rate following PCNL is high,duration of operation and intraoperative perfusion should be re-duced,antimicrobial agents should be used rationally.

OBJECTIVE:To provide reference for avoiding the recurrence of medical safety(adverse)events or inducing more severe medical accident. METHODS:The medical safety(adverse)events reported by a class A grade 3 hospital from July 2013 to March 2016 were studied retrospectively,and excluded purely adverse drug reactions and transfusion reactions to analyze the rea-son and characteristics. RESULTS:Of 747 events,there were 578 medical,nursing and drug-related medical safety (adverse) events,accounting for 77.38%;among 175 medical related medical safety(adverse)events,top 3 reasons were basic skills defi-ciencies,defects in the system processes,inadequate communication and education, accounting for 32.00%,24.00%,19.43%. The occurrence of medical safety (adverse) events were closely related to working life and qualifications;among 578 medical, nursing and drug-related medical safety (adverse) events,the incidence of adverse events was 71.11% in 5-year working life group,and that was 73.18% in junior titles group. CONCLUSIONS:Various professionals should strictly implement procedure and regulations,strengthen communication and education in daily work,and improve professional knowledge and skills so as to prevent the occurrence of adverse event completely.