Objective To study the change of reproductive endocrine function after improved hysterectomy.Methods 60 cases of patients who received improved hysterectomy for hysteromyoma were studied as study group, and 60 cases of patients who received traditional hysterectomy during the same period were set up as control group. Serum reproductive hormones in both groups were measured before the operation, in 1/2 year and in 1 year after the operation.Results In 1/2 year and in 1 year after operation, the serum levels of FSH and E 2 in study group had no significant difference as compared with those in preoperation, and the serum levels of FSH, LH in control group were significant higher, E 2 was significant lower than those in preoperation and those in study group.Conclusions Compared with traditional hysterectomy, improved hysterectomy can preserve the function of ovary. Therefore, improved hysterectomy is a good operation for treatment of benign uterine diseases.

Objective To analyze the immunological feature of the multiple myeloma. Methods The serum of 117 cases were detected by serum protein electrophoresis and immunofixation electrophoresis;and analyzed quantitatively immune globulin(IgG、IgA、IgM) ,total protein and albumin. Results Monoclone protein peak was found in 67 patients out of 117 patients tested(57.3%) ,it located mainly at γ border. Immunoglobulin G was found in 62 patients out of 117 patients tested(53.0%). Immunoglobulin A was 19 cases(16.3%) ,Immunoglobulin M was 12 cases(10. 1%) ,DL was 2 cases(1.7%) ,free light chain was 22 cases(18.8%). Homotypic immunoglobulin level increased notably and non-correspond constituent was low in immunoglobulin test. The protein quantified displayed that total protein increased and albumin decreased in different level. Conclusion The seroimmunological index played a crucial role in diagnois,clinical stage and prognosis of MM.

Objective To investigate the relationship between the polymorphism of site rs228648 in urotensin Ⅱ gene and the genetic susceptibility to gestational diabetes mellitus in northern Chinese women. Methods Genotyping was conducted to investigate the polymorphism of site rs228648 (G—A) in urotensin Ⅱgene among 70 unrelated gestational diabetes mellitus(GDM) subjects and 70 normal controls. DNA samples isolated from leucocyte of the control and study groups were analyzed for single-nucleotide polymorphisms of the urotensin Ⅱ gene at positions rs228648 using polymerase chain reaction and restriction analysis. Results (1)The distribution of genotype frequencies of site rs228648 accorded with Hardy-Weinberg′s equation law, being colony representative.(2)The frequency of G allele of site rs228648 was 70.7% in GDM group, significantly higher than that in the control group (57.9%, P0.05). (3) Women in control group were more likely to be homozygous for the allele A of site rs228648 than women with GDM. The frequency of A/A genotype of rs228648 was negatively correlated with GDM group. By the logistic procedure, after adjustment by age and gestational weeks, the odds ratio was 0.312 , and Wald Confidence Limites were 0.108 to 0.900 (P= 0.031). Conclusion Urotensin Ⅱ gene may contribute to the genetic susceptibility to gestational diabetes mellitus in northern Chinese population. G allele of site rs228648 is related to GDM possibly, and that homozygosis A of site rs228648 is likely to be an important protecting factor for GDM.

Objective To isolate Hantaviruses from reservoir animals captured in natural epidemic areas of hemorrhagic fever with renal syndrome(HFRS)and genotype isolated strains of Hantavirus in Shenzhen.Methods Infant Meriones unguiculatus and Vero-E6 cells were used in virus isolation and direct immunofluorescence assay was used for identifying viruses.The G1,G2 fragments of M segment and S segment were amplified with reverse transcription-nested-polymerase chain reaction(RT-nested-PCR)by using the Hantavirus genotype specific primers.The amplified genes were then sequenced,and subjected to homology and cladogram analysis.Results Two virus strains were isolated successfully and designated as SZ2082 and SZ2083 from Rattus norvegicus captured in Shenzhen and were identified as SEOV type by RT-nested-PCR.The nucleotide sequences of partial M and S segmentS of SZ2082 were consistent with SZ2083 completely.Compared with the G1 and G2 fragments of M gene of SEOV80-39 virus strain,the homologies of nucleotide among them were 96.7% and 95.0%,but the homology were 75.9% and 70.3% of the Hantaviruses strain with HTNV76-118 virus strain,respectively.The homology of S gene with SEOV80-39 and HTNV76-118 showed 95.7% and 69.7% at nucleotide level.The results were similar to that of M genome segment.SZ2082 and BjFT01,Beijing Rn,Guangl99,HN71-L were on the same branch and their homology reached up to 99.0%-99.7%.Conclusions Hantaviruses are isolated from Shenzhen for the first time and are classified as S2 subtype of Seoul virus.

Objective To investigate prenatal diagnosis and prognosis of fetus with hyperechogenic kidney.Methods Clinical data of 65 cases prenatally diagnosed with fetal hyperechogenic kidney in Peking University First Hospital between July,2009 and May,2015 were retrospectively analyzed.Results of fetal ultrasound screening and pregnancy outcomes were analyzed and Growth and development status of those babies were followed up until December,2015.Independent-sample-t,Chi-square or Fisher's exact test was applied for statistical analysis.Results Among the 65 cases,including 48(73.8％) bilateral and 17 (26.2％) unilateral,34 cases (52.3％) were diagnosed as non-isolated and 31 cases (47.7％) as isolated fetal hyperechogenic kidney.The primary associated malformations with non-isolated fetal hyperechogenic kidney included cardiac abnormality (14 cases,41.2％),urinary system abnormality (12 cases,35.2％),skeletal system abnormality (nine cases,26.5％),central nervous system abnormality (eight cases,23.5％) and Meckel-Gruber sydrome (one case,2.9％).Amniotic volume,the size and numbers of affected kidney between non-isolated and isolated groups showed no significant differences (all P＞0.05).Twenty out of the 65 cases (30.8％) received fetal karyotyping and one received non-invasive prenatal testing,and no abnormality was detected.Three cases received cord blood array comparative genomic hybridization with negative results.Pathogenic genes were found in two cases who received targeted exome capture with high throughput sequencing,including a TTC21B mutation in cord blood in one case and a HNF1β deletion mutation in peripheral blood after birth in the other.There were 23 (35.4％) terminations of pregnancy and 42 (64.6％) live births among which three died after birth.The rate of live birth was significantly higher in the isolated group than in the non-isolated group[87.1％(27/31) vs 44.1％(15/34),x2=13.101,P＜0.01].Of the fifteen live births in the non-isolated group,there were fourteen survived symptomfree except that one lost to follow-up.Of the 27 live births in the isolated group,follow up study revealed 23 symptom-free survivors,one lost,two neonatal deaths (one died of volvulus neonatorum,and the other due to unknown causes) and one death of renal and liver function failures at the age of two-and-a-half.ConclusionsFetal hyperechogenic kidney is an important prenatal ultrasound marker for congenital renal anomalies,and the prognosis of non-isolated fetal hyperechogenic kidney is poor.The current rate of abnormal karyotype in fetus with hyperechogenic kidney is very low.However,the rate of prenatal genes screening should be encouraged.

Objective To investigate the effect of histone deacetylase inhibitor trichostatin A (TSA) on the chemotherapy sensibility of 5-fluorouracil (5-Fu) in colorectal cancer cell line Lovo, and to explore the possible mechanisms.Methods According to the treatment methods, the cells were divided into control group, 5-Fu group, TSA group, TSA preconditioning group and combination group (TSA+5-Fu).MTT assay was used to detect cell proliferation at 24 h, 48 h and 72 h after drugs treatment.Transwell assay was used to test cell invasion after 24 h drugs treatment.Flow cytometer was applied to observe the apoptosis after 24 h drugs treatment.The expressions of thymidylate synthase (TS) were detected by Western blot after 24 h drugs treatment.Results Compared with control group, the 5-Fu group, TSA preconditioning group and combination group had a growth inhibition to Lovo cell at 24 h, 48 h and 72 h (P ＜ 0.05), and compared with 5-Fu group, the growth inhibition of TSA preconditioning group and combination group were distinctive at 48 h and 72 h (P ＜ 0.05).However, the inhibition between TSA preconditioning group and combination group were no significant (P ＞ 0.05).Interfered after 24 h, the number of cells penetrating the matrigel in control group, 5-Fu group, TSA group,TSA preconditioning group and combination group were (25.0±4.2), (16.8±2.8), (19.6± 2.5), (8.2±3.2) and (6.5±2.6), respectively (P ＜ 0.05), and the apoptosis rates were (4.26±1.36) ％, (11.66± 3.18) ％, (8.57±2.69) ％, (39.79±8.53) ％ and (45.18±10.07) ％, respectively (P ＜ 0.05).Compared with control group, the number of cells penetrating the matrigel in the experimental groups was significantly decreased, and the apoptosis rate was significantly increased (P ＜ 0.05).Compared with 5-Fu group, the numbers of cells penetrating the matrigel in TSA preconditioning group and combination group were markedly decreased, and the apoptosis rates were markedly increased (P ＜ 0.05), but the number of cells penetrating the matrigel and the apoptosis rate between TSA preconditioning group and combination group were not different (P ＞ 0.05).The difference of TS expression between control group and 5-Fu group was not significant (P ＞ 0.05).Compared with that in control group and 5-Fu group, TS expressions in TSA group, TSA preconditioning group and combination group were markedly decreased (P ＜ 0.05), but TS expressions among the last three groups were not different (P ＞ 0.05).Conclusion TSA can increase the chemotherapy sensibility of 5-Fu in Lovo cells, which may be dependent on reducing the TS expression.

To identify the genotype and analyze the molecular characteristics of dengue virus strain SZ0524 isolated from serum samples of patients with early stage of dengue fever in Shenzhen in 2005 so as to explore its possible origin. The C6/36 cell line was cultivated with virus strain SZ0524 and its suspension was harvested. The type of isolated virus strain was determined by RT-semi-nested PCR and fluorescent PCR. E gene of isolated virus strain was amplified by RT-PCR and sequenced. Homology and phylogenetic tree of E gene of this dengue virus with the strains isolated from other areas were constructed. This SZ0524 strain was further identified by fluorescent PCR, and confirmed to be the type 4 virus after obtaining the 392bp band with type 4 specific primers. The homology of nucleotide sequence of E gene of SZ0524 strain with the standard type 4 dengue virus H241 strain were 99.7%, but the homology with the standard dengue virus 1,2,3 in the same fragment were 57.0%, 59.2% and 56.2% respectively. Analysis of the phylogenetic tree indicated that SZ0524 was more close to D4-73NIID and D4-61NIID strain, next to H241 strain, and they lied in the same branch of phylogenetic tree. The isolated dengue virus type 4 belonged to genotype Ⅰand the SZ0524 strain was proved to be dengue virus type 4 in the molecular level. Combined with epidemiology information, it is suggested that this case can be classified as an imported case and the SZ0524 strain may be transferred from the southeast asian region.

ObjectiveTo investigate the change of cervical length (CL) during uncomplicated pregnancy by transvaginal ultrasound and its correlated factors.MethodsData of five hundred and ninety-five normal singleton pregnant women who received vaginal ultrasound examination on CL in their 11-13+6gestational weeks ( Ⅰstage),20-24 gestational weeks ( Ⅱ stage),28-32 gestational weeks (Ⅲ stage) and ≥36 gestational weeks (Ⅳ stage) were collected and retrospectively analyzed.Related factors were recorded at the same time.Repeated measurement data analysis of variance,t-test and Spearman correlation analysis were applied for statistical analysis.Results(1) The mean values of CL at Ⅰ,Ⅱ,Ⅲ and Ⅳ stage were (38.85±3.11) mm,(38.92±4.10) mm,(36.43±4.69) mm and (30.63±6.11) mm,respectively.There were statistical differences between the CL of any two stages (P＜0.01),except for that between Ⅰ and Ⅱ stage.The median values of CL change rates were:Ⅱ-Ⅰ stage0.00％; Ⅲ-Ⅰ stage -5.36％; Ⅳ-Ⅰ stage -20.00％.(2) The CL of pregnant women who were older than 35 was longer than that of those younger than 35 at any stage [ Ⅰ stage:(39.36±3.18) mm　vs (38.77±3.10) mm;Ⅱ stage:(39.89±4.61) mm vs (38.88±4.00) mm;Ⅲ stage:(37.29±4.79) mm vs (36.31 ±4.67) mm;Ⅳ stage:(32.25± 5.95) mm vs (30.38±6.10) mm],while significant difference was found only at Ⅳ stage (t=-2.56,P=0.01).The CL of multiparas was longer than that of primiparas [ Ⅰ stage:(38.95±2.59) mm vs (38.76±3.14) mm;Ⅱ stage:(39.54±3.62) mm vs (38.82±4.11) mm;Ⅲ stage:(37.37±4.21) mm vs (36.34±4.70) mm;Ⅳ stage:(31.77±6.05) mm vs (30.59±6.11) mm],while there was no statistical significance within any stage ( P＞ 0.05). ConclusionsCervix shortens gradually after 28 gestational weeks.Sequential measurement of CL during routine ultrasonic inspection might be helpful in predicting preterm labor.

Objective To investigate the incidence and relevant information of preterm birth and the outcomes of preterm infants delivered at various gestational weeks and for different causes. Methods Totally 955 women, who ended their pregnancies before term, and 1066 neonates of the previous mothers were enrolled in this survey, among 15 197 deliveries at Peking University First Hospital, Beijing Gynecological and Obstetric Hospital, Women's and Children's Hospital of Haidian District and Peking University Third Hospital, respectively, from December 1~(st), 2006 to May 31~(st), 2007. Results (1)Incidence of preterm birth: The overall incidence of preterm birth of the 4 hospitals was 6. 3% (955/15 197), and it was 8.1% (125/1549) in Peking University First Hospital, 13.1% (150/1142), which was the highest (P<0.01), in Peking University Third Hospital, 5.5% (369/6656) in Beijing Gynecological and Obstetric Hospital and 34.0% (311/5850) in Women's and Children's Hospital of Haidian District.The preterm birth rate at the two comprehensive hospitals was significantly higher than that of the two specialized hospitals [10.2% (275/2691) vs 5.4% (680/12 506), P <0.01]. (2) Gestational weeks at delivery: The incidence of preterm birth before 34 weeks was 28.5% (272/954) and the number changed to 71.5% (682/954)for those preterm deliveries after 34 weeks. However, this number varied among the 4 hospitals. Peking University First Hospital had the highest incidence of preterm birth before 34 weeks(P< 0.05), and the lowest was found in Women's and Children's Hospital of Haidian District(P<0.01), but no difference was found between Peking University Third Hospital and Beijing Gynecological and Obstetric Hospital. (3) Etiology of preterm birth: Preterm premature rupture of membranes (PPROM) accounted for the most proportion of all preterm birth cases, followed by iatrogenic preterm birth and spontaneous preterm birth. But the causes of preterm birth in the 4 hospitals were different. Peking University Third Hospital had a higher incidence of iatrogenic preterm birth than the others (P<0.01), and Peking University First Hospital had a higher incidence of preterm birth caused by PPROM and lower incidence of spontaneous preterm birth. The first four reasons of iatrogenic preterm birth were preeclampsia (143, 42.0%), fetal distress (58, 17.1%), placenta previa (43, 12.6%) and placenta abruption (33,9.7%). (4) Neonatal outcomes in different hospitals: The neonatal outcomes were quite different among the 4 hospitals due to different causes and different delivery weeks. The highest neonatal mortality rate was found in Beijing Gynecological and Obstetric Hospital (5.4%, 22/408) compared to that in Women's and Children's Hospital of Haidian District (1.3%,4/320) and Peking University Third Hospital (0. 6%, 1/170) (P< 0.01), but without any difference when compared to that in Peking University First Hospital (2.4%, 3/ 124) (P>0.05). (5) Neonatal outcomes at different gostational age: The recovery rate of preterm infants delivered at <32 weeks was lower than those delivered ≥32 weeks (P<0.01), and this number rose to 99. 6% in those delivered ≥34 weeks. More infants delivered <32 weeks were given up for treatment or died during the perinatal period than those delivered ≥32 weeks, with the neonatal mortality rate of 22.1% for those delivered at <32 weeks and only 0.3% for those delivered at ≥ 34 weeks (P<0.01). (6) Neonatal outcomes for various causes: The premature neonatal mortality rate for iatrogenic preterm births was higher than that of PPROM (4.9% vs 1.6%, P<0.05). But the neonatal recovery rates were similar among the PPROM, spontaneous and iatrogenic preterm birth group (P>0.05). Conclusions Preterm birth is associated with high perinatal mortality rate, especially for those delivered before 32 weeks which would be highlighted in prevention. Reduction of the iatrogenic preterm birth, combined with proper prevention of PPROM, is an important issue in decreasing the prevalence of preterm birth.

Objective To compare and contrast the gene characteristic correspondence of hantaviruses(HV) carried by rats in natural epidemic areas of hemorrhagic fever with renal syndrome(HFRS) and infected among HFRS patients in Shenzhen,provide a reasonable scientific basis for controlling of HFRS.Methods We collected the patients serum specimens in acute stage and lung tissues samples of rats.ElISA and direct immunofluorescence were applied to screen the positive samples,respectively.The partial G2 fragments of M segment and S segment were amplified from the representative patients' serum positivesamples and lung tissues positive samples in different areas with reverse transcription-nested-polymerase chain reaction(RT-nested PCR) by the hantaviruses genotype specific primers.The amplified genes were then sequenced,and subjected to genotyping and homology analysis with other known hantaviruses.Results Four hundred and seventy-two rats were trapped in the main epidemic areas,and Hantavirus specific-antigens in lung tissues samples were identified in 47 out of the 472 by direct immunofluorescence.Twelve partial M and S segments were amplified from 60 patients serum specimens positive with specific IgM antibodies against hantavirus with ELISA by RT-nested PCR.The homology of M and S genome segments among 16 strains of Hantaviruses showed more than 95% and 96.5% at nucleotide level,respectively.And the deduced amino acid sequences homology was 98.0% -100% and 98.4%-100%,respectively.The genotype of hantavirus carried by rats and infected among patients were identified to the same subtype-SEO S2.Conclusion The genotype of Hantavirus carried by rats and infected among patients in Shenzhen all belongs to S2 SEOV.The nucleotide homology of SEO type of Hantavirus in the same or nearby areas is higher and the viruses are highly conserved.