Objective To evaluate effects of different laparoscopic procedures for hydrosalpinx on ovarian responses to superovulation induction during in vitro fertilization-embryo transfer(IVF-ET).Methods A total of 65 patients with infertility derived from hydrosalpinx underwent 67 cycles of IVF-ET from January 2002 to January 2005.Before the IVF-ET,the patients were given bilateral laparosocpic salpingectomy(Group A,n=47,48 cycles) or laparosocpic proximal tubal ligation and distal tubal salpingostomy(Group B,n=18,19 cycles).Another 58 patients with proximal tubal occlusion without hydrosalpinx were simultaneously included for 58 cycles of IVF-ET(Group C).Results The fertilization rates,cleavage rates,implantation rates,and clinical pregnancy rates were 85%?21%,95%?17%,49%(55/113),and 79%(38/48) in the Group A,83%?17%,98%?7%,47%(21/45),and 68%(13/19) in the Group B,and 81%?22%,92%?16%,41%(57/140),and 66%(38/58) in the Group C,respectively,without statistically significant difference among the 3 groups(F=0.48,P=0.620;F=1.22,(P=0.297);?~2=1.691,P=0.429;?~2=2.471,P=0.291).The doses of gonadotrophin,the duration of stimulation,and the number of retrieved oocytes were 29.4?10.3 vials,9.4?1.7 d,and 11.4?5.6 in the Group A,24.7?7.7 vials,9.0?1.8 d,and 12.8?6.1 in the Group B,and 28.4?8.8 vials,9.1?1.8 d,and 11.4?5.3 in the Group C,respectively,without statistically significant difference among the 3 groups(F=1.77,P=0.174;F=0.52,P=0.593;F=0.51,P=0.599).Conclusions Laparosocpic salpingectomy or laparosocpic proximal tubal ligation with distal tubal salpingostomy for hydrosalpinx does not impair ovarian responses to the superovulation induction.Both of the procedures may be considered for the treatment of hydrosalpinx prior to IVF-ET.

Objective To evaluate the tension-free herniorrhaphy for groin hernia with defect of the entire posterior wall. Methods Fifty-four patients underwent tension-free repair for groin hernia with defect of posterior wall of the groin canal by one of two kinds of prosthesis, Bard Mesh PerFix Plug in 8 cases, Bard Mash in 2 cases and Gore-Tex Micromesh in 44 cases, under epidural anesthesia. Results Inguinal groin hernia of entire posterior wall defect was diagnosed when the defect of the posterior wall was larger than 4 cm in length. Operations were all successful in patients with pimary hernia and recurrent hernia. The mean postoperative follow up was 12.8 months with no recurrence. Conclusions The two tension-free herniorrhaphies for this type of groin hernia were safe and effective.

Objective The CYP19 gene product enzyme aromatase mediates the conversion of the androgen testosterone to es -tradiol.The aim of this study is to investigate whether the CYP19A1 gene single nucleotide polymorphism (SNP) is associated with the susceptibility to polycystic ovary syndrome (PCOS) and serum hormone levels. Methods We conducted a case-controlled study, which included 373 PCOS patients and 313 healthy controls.We genotyped SNP rs2899470 in the subjects using the polymerase chain re-action-restriction fragment length polymorphism ( PCR-RFLP) method and analyzed the frequencies of genotypes and alleles as well as the association of different genotypes with age , menarchal age, body mass index (BMI), and serum levels of hormones. Results The gen-otypic distributions of rs2899470 GG, TG, and TT in the PCOS women were 44.5%, 49.6%, and 5.9%, respectively, significantly dif-ferent from 39.3%, 48.6%, and 12.1%in the healthy controls (P=0.013).The frequency of the G allele was 69.3%in the former, remarkably higher than 63.6%in the latter (P=0.025).The rs2899470 genotypic frequencies were associated with the serum E 2/T lev-els in the PCOS patients. Conclusion SNP rs2899470 in the CYP19A1 gene is associated with the susceptibility to PCOS , and so is the genotype of rs2899470 with serum E2/T levels, which may be attributed mainly to the reduced activity of aromatase .

Objective Three-dimensional(3D) automated ultrasonic volume measurement is becoming favorable in clinical application and turns to be an important direction .The article was to evaluate the consistency of two-dimensional (2D) and three-di-mensional ultrasonography in the diameter measurement of single follicle . Methods 438 single folliculars were respectively meas-ured by the same sonographer in 2D and 3D ultrasonic measurement.2D diameter, 3D mean diameter and 3D virtual ball diameter of every single follicle were recorded , and Bland-Altman method were used to evaluate the consistency of the results by these two meth-ods. Results In the consistency analysis on the diameter measurement of single follicle by 2D and 3D mean diameter measurment methods, d equaled -1.06 mm, and 95% LoA range covered the range of -4.82 mm to 2.70 mm.95% CI of 95% LoA range,-5.21 mm to 3.08 mm, was beyond the settings of clinical acceptable error limit range , -3.56 mm to 1.44 mm, showing poor consis-tency.Likewise, in the research of the consistency in the measurement of 2D diameter and 3D virtual ball diameter in the diameter measurement of single follicle , d equaled -0.07 mm , and 95%LoA range covered the range of -3.11 mm to 2.98 mm.95%CI of 95%LoA range, -3.43 mm to 3.29 mm, was beyond the settings of clinical acceptable error limit range , -2.57 mm to 2.43 mm, showing poor consistency . Conclusion 2D and 3D ultrasound measurements in the diameter measurement of single follicle are not consistent.However, considering the objectivity and accuracy of the results , 3D ultrasonography still has an advantage over 2D ultra-sonography , which can provide more acurate aid for assisted reproductive technology .

Objective To study the diversities of imaging, symptoms, electrophysiology and clinical value of the stereoelectroencephalography(SEEG) in patients with mesial temporal lobe epilepsy.Methods Eight patients with intractable epilepsy in Epilepsy Center of Yuquan Hospital of Tsinghua University who underwent mesial temporal lobectomy were recruited in this study, and their epileptic foci could not be accurately positioned.Therefore stereotactic brain electrodes were implanted, and their usual attack originated from mesial temporal lobe structure were confirmed.There was no seizure in the one year follow-up.Results Symptoms of the eight patients behaved differently, and the onset of the seizures in scalp electroencephalograph or SEEG showed diversities.Epileptic discharges were found originated from the mesial temporal lobe after implanting electrodes: in the early stage of discharges, four cases had the conduction to insular lobe structure;two cases had the conduction to contralateral mesial temporal lobe;one case had the conduction to retrosplenial cortex;one case had the conduction to parietal lobe;one case had the conduction to frontal lobe and rapid generalization (one case had the conduction to insular lobe and contralateral mesial temporal lobe meanwhile).Conclusions There is difference in clinic, imaging and electrophysiology of the patients with mesial temporal lobe epilepsy The non-specificity can be explained by the evolution of the intracranial electroencephalography, which can help us know its network conduction pattern Insular lobe is the most common conduction approach of mesial temporal lobe epilepsy in early stage SEEG can be used as a microinvasive, accurate preoperative localization method, which can help us to locate accurately and understand the discharges and conduction mode.

Nanobody is a kind of antibody from camel, which misses light chain. Nanobody has the same antigen binding specificity and affinity as mAb. Moreover, because of its small molecular weight, high stability and easy preparation, nanobody has great value of biomedical applications. In this study, we successfully prepared highly pure antiEGFR nanobody in E.coli using genetic engineering techniques. Cell proliferation assay (CCK-8 assay) and migration experiments (cell scratch test and Transwell assay) indicated that the recombinant antiEGFRnano can significantly inhibit the proliferation and migration of endometrial cancer cells. These results provide a new way of thinking and methods for EGFR-targeted therapy of endometrial cancer.

BACKGROUND:In recent years, chitosan-based thermosensitive hydrogel, as scaffold materials, have received more and more attentions in the field of tissue repair because of good biocompatibility, biodegradability and drug-sustained release.
OBJECTIVE:To explore the directed differentiation and growth of rat bone marrow mesenchymal stem cells on the quaternary chitosan thermosensitive hydrogel scaffold and to look for more ideal tissue engineering materials for the treatment of nervous system damage.
METHODS:The thermosensitive hygrogel scaffold was prepared using hydroxypropyltrimethyl ammonium chloride chitosan (HACC) andβ-glycerophosphate (β-GP). The spatial structure of scaffold was observed by scanning electronic microscope. Effect of leaching liquor from the HACC/β-GP scaffold on the viability of bone marrow mesenchymal stem cells was detected by (4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The albumin from bovine serum was combined with the scaffold, and the slow-release effect of the scaffold was detected by ultraviolet absorption spectrometry. Bone marrow mesenchymal stem cells were incubated onto the compound scaffold at 3 passages. The adhesion, growth and differentiation of bone marrow mesenchymal stem cells on the compound scaffold were observed by the scanning electron microscope. Neuron-specific enolase was detected by immunofluorescence.
RESULTS AND CONCLUSION:The porosity and thermal sensitivity of HACC/β-GP scaffold and slow-release effect of glial cellline-derived neurotrophic factor were apparent. The results of MTT showed that the compound scaffold cannot take apparent negative effects to the proliferation of bone marrow mesenchymal stem cells. After inoculation, bone marrow mesenchymal stem cells permeated the porous structure of the scaffold and adhered to the scaffold. Under the role of glial cellline-derived neurotrophic factor, bone marrow mesenchymal stem cells showed neuron-like cellmorphology and cells co-cultured with the compound scaffold expressed the marker of neurons, neuron-specific enolase. Under the role of slow-release glial cellline-derived neurotrophic factor, bone marrow mesenchymal stem cells can grow wel in vitro and differentiate into neuron-like cells on the HACC/β-GP scaffold.

Objective To investigate the effect of different amplification methods and probes with various length on the results of comparative genomic hybridization (CGH) analysis of pre-implanted single blastomere and to establish the basis for preimplantation genetic diagnosis.Methods Twenty blastomeres of embryo at 6-8 cells stage were randomly divided into A and B group with 10 in each.Twenty peripheral blood lymphocytes from a healthy man were similarly divided into C and D group with 10 in each.Degenerate oligonucleotide primed polymerase chain reaction (DOP-PCR) was used to amplify whole genomic DNA in group A and C,and multiple displacement amplification (MDA) was used in group B and D for whole genome amplification (WGA).The specificity of resultant products was confirmed by amplification of TBX1 gene exon 2.CGH was performed respectively with 250-750 bp and 750-2000 bp probes prepared from the amplified whole genomic DNA.The result of CGH was verified by sex-determining region of Y (SRY).Results (1) Nine of the 10 samples in group A and all in group C were amplifiable by DOP-PCR,but there were multiple non-specific bands in the amplification of TBX1 exon 2 when WGA products were used as templates.When 250～750 bp probe was used in CGH,1 of the 5 blastomeres was failed and another one had different karyotype from that analyzed by SRY.(2) All samples in group B and D were successfully amplified by MDA,and the non-specific bands were significantly less in the amplification of TBX1 exon 2.All 5 blastomeres were successful in CGH with the 250～750 bp probe.Moreover,the karyotype was in agreement with that of SRY.(3) When 750 ～ 2000 bp probe was used,the CGH results were suboptimal.Conclusions In WGA of single blastomere,MDA is superior to DOP-PCR in the stability and specificity.The karyotype image detected by CGH with the 250～750 bp probe is clear and homogenous.

OBJECTIVETo evaluate percutaneous epididymal sperm aspiration (PESA) and testicular sperm extraction (TESE) in the diagnosis and treatment of azoospermia.

METHODSWe examined 385 azoospermia patients using the techniques of PESA and TESE.

RESULTSOf the total number of the azoospermia patients, 64 (16.62%) had sperm in the epididymis and 45 (11.69%) in the testis. Intracytoplasmic sperm injection (ICSI) was applied to 64 of the patients with sperm in the epididymis or testis. The pregnancy rate after the embryo transfer was 39.07%.

CONCLUSIONPESA and TESE, as an effective therapy for azoospermia, can further the classification of azoospermia and provide chances of procreation to azoospermia patients with partial obstruction.

Adult ; Azoospermia ; diagnosis ; therapy ; Cell Separation ; methods ; Epididymis ; cytology ; Humans ; Male ; Sperm Injections, Intracytoplasmic ; methods ; Testis ; cytology ; Treatment Outcome