Objective To investigate the prediction value of ultrasound endometrial pattern at the day of hCG administration on clinical outcome in patients undergoing in vitro fertilization-embryo transfer (IVF-ET).Methods 679 cycles of IVF-ET conducted between January 2011 and December 2012 in Beijing Obstetrics and Gynecology Hospital were reviewed retrospectively.All cycles were divided into three groups based on the endometrial pattern measured on the hCG day:group A (n =411) with triple line endometrium,group B (n =228) with no obvious triple line endometrium,group C (n =40) with homogeneous hyperechoic endometrium.Clinical outcomes such as implantation rate,pregnancy rate and miscarriage rate were analyzed.Results Among three groups,the implantation rates were 27.05％,20.33％,19.57％,respectively (x2 =9.04,P =0.01); the pregnancy rates were 34.31％,25.00％,12.50％,respectively (x2 =12.20,P =0.00).The implantation rate and pregnancy rate in group A were higher than the other two groups (P ＜0.05).The miscarriage rates were 16.31％,19.30％,40.00％,respectively(P ＞ 0.05),there were no significant difference among them.Conclusions The ultrasound endometrium pattern on the day of hCG administration has predictive value on clinical outcome in patients undergoing in vitro fertilization-embryo transfer.

Objective To study the effect of HCV receptors′sequence on virus entry based on the two-dimensional structure and via tandem expression of HCV receptors on mouse hepatocytes.Methods The construced recombinant expression vectors pCDH-hLDLR-hSR-BⅠ-hCD81-GFP, pCDH-hLDLR-hCD81-hSR-BⅠ and pCDH-hCLDN-1-hOCLN-DsRed were cotransfected into 293FT cells with package vectors.The collected recombinant lentivirus expressing hCLDN-1-hOCLN was concentrated and attacked mouse hepatocytes.The transgenic mouse hepatocytes with tandem overexpression of CLDN-1 and OCLN were established after G418-selection.The transduced cells LSCCO/Hepa1-6 and LCSCO/Hepa1-6 were sorted via flow cytometry and puro-G418-selection after recombinant lentivirus expressing hLDLR-hSR-BⅠ-hCD81 and hLDLR-hCD81-hSR-BⅠattacked Hepa1-6 respectively.The infectivity of transduced mouse hepatocytes LSCCO/Hepa1-6 and LCSCO/Hepa1-6 to HCV was analyzed via direct-infection of serum-derived virus.Furthermore, the effect of HCV receptors′sequence on virus entry was studied.Results Both LSCCO/Hepa1-6 and LCSCO/Hepa1-6 enhanced HCV-cell binding.The transduced mouse hepatocytes LSCCO/Hepa1-6 had more HCV endocytosis.Conclusion SR-BⅠhas priority over CD81 in HCV entry in the early stage.

Objective To explore humam cytomegalovirus(HCMV) encoded microRNAs during latent infection in order to help study HCMV virology and latent infection mechanisms.Methods A model of HCMV latent infection via THP-1 cells infected with HCMV was constructed.Deep-sequencing was performed using high-resolution Solexa sequencing platform.The secondary structure of the newly sequenced miRNA was predicted by RNAFold bioinformatics software. Results HCMV encoded various miRNAs during latent infection, including miR-US25-2-3p, miR-US25-2-5p, miR-UL112, miR-US25-1, miR-UL22A and PC-5p-148467 with a predicted length of 25 bp, named hcmv-miR-US33as-5p.Conclusion HCMV can express many types of miRNAs during latent infection.

Objectives:To propose a coronal imaging classification of neurofibromatosis type Ⅰ with dys-trophic upper thoracic scoliosis(DUTS-NF1),to verify its reliability and reproducibility,and to explore its clinical significance.Methods:We retrospectively analyzed the data of patients diagnosed with neurofibromato-sis type Ⅰ with dystrophic spinal scoliosis in the database of our hospital from June 2009 to December 2023.The patients whose main curve apex located in the upper thoracic vertebrae(T1-T5)were screen out and were classified according to the coronal scoliosis pattern on standing spinal X-rays:Type A,shoulder-neck type;Type B,distal thoracic compensatory curve type;Type C,trunk inclination type.The Cobb angle,upper thoracic kyphosis angle,clavicle angle(CA),T1 tilt,neck tilt(NT),head shift(HS),coronal balanced dis-tance(CBD),and deformity angular ratio(DAR)were measured and calculated for each type of patients.Three spine surgeons,who had been specially trained,independently performed two classifications according to the method.The results of the two classifications of the same observer were analyzed for reproducibility by apply-ing the Kappa value,and the results of the classification were analyzed for confidence between different ob-servers.Results:29 patients(7.9％)with DUTS-NF1 were identified from the 367 NF1 patients with dystrophic scoliosis,and the main Cobb angle was 78.7°±12.9°.The classification results of the designer were 16 patients of type A,8 of type B,and 5 of type C.The DAR of type B and type C was significantly higher than that of type A(20.6±2.2,20.0±3.0 vs 13.2±1.8,P＜0.001);Type C had more significant head and coronal shift distances than type A(HS:27.6±11.7mm vs 13.5±6.7mm,P＜0.001;CBD:34.8±20.5mm vs 13.9±10.9mm,P＜0.001);The T1 tilt of type C was significantly higher than that of type A(P＜0.05);The other imaging parameters were not statistically different between the three types(P＞0.05).174 times of classifications were performed by the 3 observers using the DUTS-NF1 coronal imaging classification method,including 96 classifications of type A,45 classifications of type B,and 33 classifications of type C.The intra-observer classification concordance rate was(82.57±8.44)％,with a Kappa value of 0.771-0.81,which was considered to be"Basically reliable";The inter-observer classification concordance rate was(84.19±8.65)％,with a Kappa value of 0.884-0.886,which was considered to be"Completely reliable".Conclusions:Based on the coronal imaging features,patients with DUTS-NF1 can be classified into three types of shoulder-neck type,distal thoracic compensatory curve type,and trunk inclination type.This classification system has satisfied reproducibility and reliability,which is helpful for assessing the coronal compensation of DUTS-NF1 patients,and thus guides the clinical diagnosis and treatment.

We produced beta1 gene which is about 2400 bp by reverse transcription polymerase chain reaction (RT-PCR) from bovine trachea, reclaimed and purified, then cloned the amplified fragment to pGEM-T easy vector, confirmed by sequencing. The immune-dominant epitope of beta1 gene was chosen by computer analysis and then syncretized ligand-binding domain from 346 bp to 843 bp of ecytoplasm with six histidine, expressed LBD protein massly in E. coli BL21 (DE3), and identified by SDS-PAGE. The fusion protein was purified with Ni-NTA affinity chromatography and immunized New Zealand rabbits preparing of its polyclonal antibody, the specific antibody titer was above 1:12,800 detected by indirect ELISA, the result of Western blot showed that this antibody could be recognized by LBD fusion protein.
Animals ; Antibodies, Monoclonal ; biosynthesis ; Cattle ; Escherichia coli ; genetics ; metabolism ; Foot-and-Mouth Disease Virus ; physiology ; Integrin alpha1beta1 ; biosynthesis ; genetics ; immunology ; Ligands ; Protein Binding ; Protein Interaction Domains and Motifs ; Rabbits ; Receptors, Virus ; genetics ; metabolism ; Recombinant Fusion Proteins ; biosynthesis ; genetics ; immunology

Objective:To evaluate the safety and efficacy of one-stage posterior-only jumping hemivertebra (HV) resection combined with respective short fusions in the treatment of congenital scoliosis (CS) caused by multiple HVs.Methods:All of 13 consecutive patients with multiple HVs treated surgically from January 2010 to December 2017 were retrospectively reviewed, including 4 males and 9 females with a mean age of 3.7±1.2 years. One child had 4 HVs, and the rest had 2 HVs. The responsible HVs causing local scoliosis/kyphosis deformity or coronal plane deviation were selected as the target of resection. The distal HV was removed firstly and then the proximal one was resected; both of the fixation vertebraes were horizontalized during surgery. The clinical and imaging data of the children before the initial operation, immediately after the operation and at the latest follow-up were collected, and the short-term and long-term complications related to surgery were recorded. The data were evaluated on the whole-standing spine anteroposterior and lateral films, including the corrections of proximal and distal main curves, coronal balance, local kyphosis, and the improvement of spinal growth height (upper and lower internal fixation length, T 1-S 1 length). At the same time, the re-progression of coronal and sagittal deformities of the spine during growth was recorded (coronal decompensation: emerging postoperative curve progression more than 20°; kyphosis progression: kyphosis aggravation between upper and lower internal fixation more than 40°) and internal-fixation-related complications (screw cutting, screw malposition) were recorded. Results:Dual HVs were resected in each child, of which 8 (61.5%) were located on contralateral side of the spine, and 5 (38.5%) were located on ipsilateral side of the spine. The follow-up time was 6.2±3.3 years (range 2.0-10.5 years) after surgery. The Cobb angles of proximal and distal main curves were 36.7°±11.8° and 35.2°±7.8° respectively before surgery and were corrected to 9.7°±6.6° and 6.1°±4.1° respectively after surgery ( F=31.249, F=93.83, P< 0.001) ( t=6.888, t=10.954, P<0.001), and the correction rates was 73.6%±19.6% and 82.7%±11.7%, respectively. They were maintained at 14.3°±5.4° and 8.0°±4.6° at the latest follow-up, showing the correction rates loss of 15.8%±26.9% and 6.9%±7%, respectively. The coronal balance improved from 17.2±14.8 mm pre-operatively to -0.2±15.7 mm postoperatively ( t=2.703, P=0.008), and it remained at 0±18.4 mm at the final follow-up ( F=4.137, P=0.024). The T 1-S 1 length was corrected to 273.8±27.3 mm postoperatively, slightly increased compared with pre-operation 256.3±24.0 mm, ( t=0.680, P=0.527), and significantly increased to 333.2±33.4 mm at the latest follow-up ( t=2.986, P<0.001; F=6.704, P=0.003). Seven patients had local kyphosis before operation, which was significantly improved from 32.2°±13.6° to 6.1°±9.8° with a correction rate of 93.4%±27.0% after surgery ( t=3.355, P=0.004), which showed no significant loss of correction at the latest follow-up (5.4°±10.4°) ( F=11.187, P=0.002). Six patients (46.2%) developed coronal decompensation (Curve magnitude >20 °), with an average of 21.7°±1.9°. Two cases (15.4%) had progressive kyphosis between the thoracic regional internal fixations at 3 months after surgery, which were 68° and 58° respectively. After bracing, both coronal decompensation and sagittal kyphosis were improved. At the last follow-up, the coronal decompensation was improved to 14.7±8.9° and the kyphosis was alleviated to 55° and 46°, respectively. Conclusion:Posterior-only skipping hemivertebra resection and short fusion is a safe, effective procedure yielding significantly improvement of the growth imbalance and reginal spinal deformities of CS with multiple HVs. The mid-term follow-up results showed that the progress of the scoliosis was common during the growth period, which could be further controlled by supplementary brace treatment.

Objective To investigate the value of the apparent diffusion coefficient (ADC)measurement in assessment of tumor grade and myometrial invasion of endometrial carcinoma (EC).Methods 80 EC patients and 28 cervical cancer patients with normal endometrium were studied retrospectively.1.5T conventional MRI and DWI (b=0,1 000 s/mm2)were performed,and ADC values were calculated by two radiologists.Statistical analyses were performed by using SPSS 19.0 and Medcalc software.Results The mean ADC values (×10-3mm2/s)were 0.851±0.131,0.752±0.099,0.681±0.089 for G1,G2 and G3 EC,respectively.Significant statistical differences were achieved for the three groups (G1 vs G2:P=0.005;G2 vs G3:P=0.03;G1 vs G3:P< 0.000 1).For the prediction of G3,the area under the curve (AUC)of 0.851 and the cut-off value of ≤0.742×10-3mm2/s were identified,with the sensitivity, specificity and accuracy of 88.24%,76.19% and 85%,respectively.Conclusion There are significant statistical differences between histologic grades of EC.ADC measurement may have the potential to select G3 EC patients.

Objective To study the levels of antibodies against bordetella pertussis among pregnant women and neonates in Beijing. Method From December 2016 to March 2017, pregnant women and their newborns from three women and children′s hospitals in Beijing were enrolled in this study. 3 ml of venous blood from the mothers and 3 ml of umbilical cord blood from neonates were drawn.Pertussis bacillus IgG antibody (PER-IgG) and pertussis toxin IgG antibody (PT-IgG) were tested using enzyme-linked immunosorbent assay. χ2 test was used to compare the positive rate of pertussis IgG antibodies in maternal and cord blood in the three hospitals. Correlational analyses of the antibodies levels in each hospital were conducted. The demographic characteristics, history of cough during pregnancy and history of DTaP vaccination of the mothers were collected via questionnaires. Result A total of 612 pairs of venous blood and cord blood samples were collected, including 4 mothers delivered twins and 616 cases of cord blood sample were collected. No history of pertussis were found in the 612 mothers. Among the 616 cases of umbilical cord blood, positive rate of PER-IgG was 13.3％ (82/616), positive rate of PT-IgG was 0.5％ (3/616). Among 612 cases of venous blood from the mothers, positive rate of PER-IgG was 7.7％ (47/612), positive rate of PT-IgG was 0.3％ (2/612). Positive rates of PER-IgG and PT-IgG in the mothers′ venous blood were not correlated with their residences (P=0.676 and 0.544). Positive rates of PER-IgG (r=0.842, P<0.001) and PT-IgG (r=0.619, P<0.001) in the mothers′ blood were positively correlated with the positive rate in umbilical cord blood. Conclusion This study shows that the positive rate of PER-IgG is very low in the maternal and umbilical cord blood in Beijing. Positive correlations of PER-IgG and PT-IgG between mother and umbilical cord blood were existed. Most mothers and their newborns do not have enough protection against pertussis.

Objective:To evaluate whether pelvic fixation is needed in patients undergoing posterior lumbosacral hemivertebra (LSHV) resection and long fusion.Methods:All 32 adult spinal deformity patients with posterior hemivertebra (HV) resection and long segment fixation treated from April 2005 to August 2019 were analyzed retrospectively, including 12 males and 20 females with a mean age of 32.9±8.8 years. According to the state of coronal balance distance (CBD), there were 15 cases of type A (preoperative CBD≤ 30 mm), 1 case of type B (preoperative CBD>30 mm and C 7 plumb line offset to the concave side), and 16 cases of type C (preoperative CBD>30 mm and C 7 plumb line offset to the convex side). The clinical and imaging data before operation, immediately after operation and at the last follow-up were collected, and the short-term and long-term complications related to operation were recorded. The improvement of Cobb angle and coronal balance of primary curve and compensatory curve were evaluated on the whole spine frontal and lateral X-ray films, and the change of coronal balance type after operation was evaluated. According to the mode of distal internal fixation, the patients were divided into two groups: PF group (pelvic fixation): distal fixation to iliac or sacroiliac; NPF group (non-pelvic fixation): distal fixation to L 5 or S 1. Results:All 32 patients were followed up with an average time of 3.9±2.6 years (range 2-11 years). The Cobb angle of primary curve in PF and NPF groups were 42.6°±13.5° and 41.3°±10.9° respectively before operation, and corrected to 13.1°±5.4° and 17.7°±5.8° respectively after operation. It maintained at 13.4°±5.1°and 18.5°±6.7° in the two groups at the last follow-up, respectively ( FPF=32.58, FNPF=28.64, P<0.001). The correction rates were 69.3%±11.8% and 57.6%±10.3%, respectively ( t=2.14, P=0.012). The compensatory curves of in the two groups were corrected from 54.9°±14.8° and 46.8°±13.6° before operation to 17.3°±9.6° and 15.4°±8.4° after operation. It also maintained at 18.5°±8.8°and 17.6°±9.5° in the two groups at the last follow-up, respectively ( FPF=42.97, FNPF=38.56, P<0.001). The correction rates were 68.4%±16.7% and 67.2%±14.9%, respectively ( t=0.17, P=0.849) in the two groups. In PF group, the primary and compensatory curve were similar (69.3%±11.8% vs. 68.4%±16.7%, t=0.15, P=0.837), while the correction rate of compensatory curve in NPF group was significantly higher than that of the primary curve (67.2%±14.9% vs. 57.6%±10.3%, t=2.13, P=0.013). Coronal decompensation occurred in 12 patients (12/32, 37.5%). The CBD in PF and NPF groups was corrected from 33.3±11.2 mm and 28.8±8.1 mm preoperatively to 18.5±3.5 mm and 27.1±6.8 mm postoperatively, respectively, and it showed no significant change at the last follow-up ( FPF=41.61, P<0.001; FNPF=0.38, P=0.896). While the CBD in PF group was significantly better than that in NPF group ( t=3.23, P=0.002; t=2.94, P=0.008). The incidence of coronal decompensation in PF group was 0%, which was significantly lower than 50% (12/24) in NPF group (χ 2=6.40, P=0.014). In addition, 6 cases in PF group were type C coronal decompensation before operation, and the coronal balance was corrected to type A after surgery (100%). Among 10 patients with type C coronal decompensation in NFP, 4 (40%) patients returned to type A after operation, and the difference was statistically significant (6/6 vs. 4/10, χ 2=5.76, P=0.034). Conclusion:Coronal decompensation (12/32, 37.5%) is not rare in patients after posterior LSHV resection and long fusion. Attention should be paid to the match of the corrections between lumbosacral deformity and compensatory curve, which is of great significance in coronal balance reconstruction. Pelvic fixation is helpful to reduce the incidence of postoperative coronal decompensation, especially for the type C patients.

From 2018 to 2019, 3 453 cases of high-risk population were screened by the Cancer Screening Program in Urban China (CanSPUC) in Hebei Province, with the age of (53.94±8.00). 147 and 686 cases of breast cancer positive and suspicious positive patients were found, with the positive rate and suspicious positive rate of 4.26% and 19.87% respectively. The suspicious positive rate of 45-49 years old age group was the highest (28.32%), and the positive rate of over 70 years old age group was the highest (7.32%). The positive detection rate of mammography combined with ultrasound was 5.16%, which was higher than that of ultrasound alone (2.46%) (χ2=30.28, P<0.001) or mammography alone (3.06%) (χ2=14.56, P<0.001).