Objective To study the feasibility of tubal reversal after sterilization by laparoscopy.Methods From May 2002 to December 2005,31 patients with tubal ligation received laparoscopic tubal reversal by one-core or two-dot apposition and demixing suture of the serosa.Results The laparoscopic tubal reversal was successful in all the 31 cases.Thirty of the patients were followed up for 8-24 months(mean,16 months);27 of them had intrauterine gestation,3 were non-pregnant;none of them had ectopic gestation.Conclusions Laparoscopic tubal reversal after sterilization can satisfy with the desire and principle of microsurgery.It is feasible for clinical application and has good outcomes.

Patients with ischemic stroke is often accompanied by inflammtory response. Studies have suggested that toll-like receptor 4 (TLR4) has induced the occurrence,development and of ischemic stroke and secondary brain injury. This article reviews the toil-like receptor 4 signal transduction pathway and its roles in ischemic stroke in order to provide certain basis for the development of TLR4-targeted medication.

0.05).The number of vaginal folds and vessle of vaginal natural layers in the Zuogui Pill large dosage group were more than those in the model group(P0.05).Conclusion Zuogui Pill,the compound herbal formula for reinforcing the function of kidney,is not influential on the uterus of ovariectomized female rats.It can delay the vaginal deadness through increasing the local blood supply of ovariectomized rats.

Adolescent ; Humans ; Male ; Parasomnias

Objective To investigate the effects of eritoran on the expressions of the inflammatory cytokines interleukin-1β (IL-1β),tumor necrosis factor-α (TNF-α) and interferon-[ (IFN-β) mRNA in the basilar artery after subarachnoid hemorrhage (SAH) in rabbits.Methods Atotal of 36 healthy adult male New Zealand white rabbits were randomly allocated into three groups:SAH (n =12),normal saline (n =12) and eritoran (n =12) groups.A SAH model was induced by injection of autologous arterial blood into cisterna magnatwice.An equal amount of cerebrospinal fluid was displaced with the saline in the normal saline group.An equal amount of autologous non-heparinized arterial blood was injected immediate after the replacementof cerebrospinal fluid in the SAH group.Eritoran 1.5 mg/kg was injected intravenously immediately after the blood injection via the cisterna magna each time in the eritoran group.The food intake and neurological deficit were assessed.The expressions of IL-1β,TNF-α and IFN-β mRNA in the basilar artery were detected by real-time fluorescence quantitative polymerase chain reaction.Results The food intake scores (1.20 ± 0.41 vs.2.20 ±0.61; t =53.073,P =0.002),the neurological deficit scores (1.46 ± 0.32 vs.2.6 ± 0.08; t =306.431,P =0.001),the expressions of IL-1β (1.22 ±0.48 vs.2.38 ±0.06,P =0.000),TNF-α (1.39 ±0.07 vs.3.32 ±0.21,P =0.000) and IFN-β (1.51 ±0.08 vs.2.18 ±0.05,P =0.000) in Eritoran group were all significantly lower than those in the SAH group.Conclusions Eritoran may downregnlate the expressions of inflammatory cytokines IL-1β,TNF-α and IFN-β mRNA in the basilar artery after SAH in rabbits,increasing food intake,and improving neurological deficits.

OBJECTIVE:To explore the clinical role of two-hour(C2)of CsA in allogeneic hematopoietic stem cell transplantation.METHODS:The whole blood CsA concentration of 9 patients of C0 and 12 of C2 were determined by FPIA method . RESULTS: The satisfactory immunosuppressive concentration was found as follow: C0 was 200～400 ?g?L-1and C2 was 500～700 ?g?L-1.Both C0 and C2 could predict the acute rejection and side-effects,but C2 is more effective.CONCLUSION:The factors that affect the whole blood concentration of CsA were complex. CsA blood concentration monitoring can be used to guide rational use of CsA,but C2 is more effective than C0.

OBJECTIVE A practical gene chip which aimed to detect and identify pathogens rapidly and exactly is developed on the basis of patent technology of nano-enlargement-detection. METHODS Oligonucleotide probes for the specific gene fragments of target pathogens were designed and immobilized on gene chip.Target sequences were labeled by nanogold as reporter materials.After hybridization,its results were recorded by the interaction between nanogold and silver which amplified the hybridization signal to form brown particles,which could be detected by naked eyes. RESULTS The probes designed were all of strong specificity and great reliability possessing identity of hybridization conditions.The reaction time for marking could be decreased by properly raising the ratio of nanogold and nucleic acid and the speed of labeling reaction could be fastened significantly by gentle agitation.A better hybridization results could be obtained when the samples were hybridized for 8 hours at 45℃ with 0.8 mol/L ionic strength,and then strictly rinsed.Furthermore,the hybridization efficiency could be increased remarkably by slight circumgyratation.A better chromatic effect resulted from the reaction way in 3min?3 at 37℃.The sensitivity of gene chip assays in this test could reach to 100 fmol/L.Compared with traditional detection approach,detection by the chip displayed such advantages as speediness and simplicity and the detection results could be easily recognized by naked eyes. CONCLUSIONS The chip detection technology has met the demand of design exhibiting high sensitivity,strong specificity,and easy operation without special device and showing a promising prospect.

Objective To realize three key techniques in medical video transmission system including the establishment of cross-compilation environment,OSD superposition by drive equipment,the resolve of network delay of MPEG4 video stream.Methods Embedded Linux was used to programming.Results The three key techniques were realized.Conclusion The resolve of key techniques sweeps off the obstacles in the construction of medical video transmission system.

OBJECTIVE To develop a preparation technique of sample of one-time PCR with common primers based on ribotyping which was combined with the detection system of nanogold-based gene chip to detect clinical bacterial pathogens.METHODS According to the highly conserved regions of rDNA,the common primers were designed and used to amplify each target bacterial ISRs by one-time PCR,and the specific oligonucleotide probes for each target ISRs were designed,utilized to establish the new nanogold-based gene chips.After the characteristics of the chip such as sensitivity,specificity and reliability were determined,the chip was used to detect clinical samples.RESULTS The designed common primers could amplify the 12 target bacteria successfully by one-time PCR.All selected probes were of strong specificity and great reliability.The chip had high sensitivity,specificity and reliability,reaching 50 fmol/L of detection sensibility.Clinical detection results showed the chip had a great accuracy.CONCLUSIONS Compared to multi-PCR chip detection,the detection procedure and complexity of the chip are decreased significantly,and have more practical value in clinical pathogens detection.

The continuing education system at the Peking University Health Science Center for vis-iting scholars (Research program for young and middle-aged doctors) is a relatively advanced and compre-hensive medical continuing education system in China, among which, the tutorial system is a good method to guide the visiting scholars of continuing education. On this basis we conducted scholars learning effect questionnaire survey and combined with the feedback results, discussed the advantages and disadvantages of the current educational system of visiting scholars in China, and put forward some concrete suggestions on the development of the continuing education in China.