Objective Human sperm hyaluronidase in the acrosome is a key enzyme during fertilization.To study and establish a modified substrate film method to improve the diagnotic and treatment of male infertility and investigate the influence of sperm hyaluronidase on male fertility.Methods According to the biochemical feature of sperm hyaluronidase that can dissolve the hyaluronic acid in matrixes,the modified sodium hyaluronate-Gelatin membrane was used as substrate to demonstrate the sperm hyaluronidase activity by incubation and staining.70 human semen samples were selected,categorized and detected for hyaluronidase activity according to the resuh of routine clinical semen examination.The average sperm hyaluronidase activity was statistically anyliezed between the fertile group and infertile group.Results Under general light microscope,the clear and bright digestion circle around the sperm head can be observed against the background of deep purple-blue stained substrate at the positive-reaction area.The amounts of positive reaction and the diameter of the bright circle are positively related to the activity of sperm hyaluronidase.The average hyaluronidase reaction rate and diameter of normal fertile group were 70.84% and 78.17 ?m;What about the infertile group A were 60.02% and 76.92 ?m;The infertile group B were 29.11% and 8.22 ?m; There was statistical difference of HYD activity between the infertile group.B and the fertile group(P

Auto liver transplantation (ALT) has been tremendously popular in hepatic surgery for the liver masses due to lack of enough donor for allogeneic transplantation of liver.But ALT remains stagnant because it is technically more difficult than liver transplantation.Much difficulties in this field lying ahead.Related surgical technical requirements for surgeons operating ALT,complications,difficult liver resection,hypothermic liver perfusion,veno-venous bypass,ex vivo ECMO perfusion and liver trim,assess the quality and volume of autoplast,autoplast implant and vascular anastomosis.On the other hand,the therapeutic effect largely depends on the intraoperative vascular separating range,the location and size of the tumor,the scope of lymphoid infiltrates by neoplast,the intubation site for perfusion and the sequence of opening the occlusion vessel.Thus,it's necessary to set up a scientific,normative ALT procedure to improve the therapeutic effect and prognosis.

OBJECTIVETo compare the early clinical effects of Activ C cervical disc replacement (ACDR) and anterior cervical discectomy and fusion (ACDF) in treating single-level cervical spondylosis.

METHODSThe clinical data of 76 patients with single-level cervical spondylosis underwent surgery from July 2009 to September 2012 were retrospectively analyzed. Among them, 28 patients were treated with ACDR (ACDR group), including 18 males and 10 females, aged from 32 to 62 years old with an average of (45.2±6.2) years; and 48 patients were treated with ACDF (ACDF group), including 28 males and 20 females, aged from 33 to 60 years old with an average of (45.8±6.4) years. Visual analogue scale (VAS), Japanese Orthopedics Association (JOA) score, Short Form-36 (SF-36), imaging data were used to assess the clinical effects after operation.

RESULTSA total of 76 patients were followed up from 6 to 24 months with an average of 13.2 months. VAS of neck pain and brachialgia were improved in all patients after operation (P<0.05), there was no significant difference between two group (P>0.05). Somato-score and psycho-score of SF-36 of two groups were obviously increased (P<0.05), ACDR group was better than that of ACDF group (P<0.05). In ACDR group, there was no significant difference in the range of motion of surgical segments and adjacent segments between preoperative and postoperative (P>0.05); heterotopic ossification around the edge of vertebral body occurred in 1 case on the 6th month after operation, no fusion was found on the 1st year after operation. In ACDF group, the adjacent vertebral disease occurred in 1 case and the patient underwent the reoperation.

CONCLUSIONActiv C cervical disc replacement can reduce the degeneration of adjacent segments and its early outcomes for the treatment of single-level cervical spondylosis are satisfactory, but the long-term effects still need study.

Adult ; Cervical Vertebrae ; surgery ; Diskectomy ; methods ; Female ; Humans ; Male ; Middle Aged ; Spinal Fusion ; methods ; Spondylosis ; surgery ; Total Disc Replacement ; methods

Objective To investigate whether there is prethrombotic state in acute viral encephalitis.Methods Von willebrand factors (VWF),granule membrane protein-140(GMP-140) and D-dimer were measured in 60 children,30 cases of them had mild acute viral encephalitis, and other 30 cases of them had severe acute viral encephalitis.Results The figures mentioned above had marked difference in children with mild acute viral encephalitis during acute and recovery stage compared with controls.Conclusions Testing the expressive rate of GMP-140 on platelet surface,plasma VWF and D-dimer can find the prethrombotic state immediately. GMP-140,VWF and D-dimer in estimating the severe extent of disease and the prognosis play a major role. J Appl Clin Pediatr,2004,19(6):501-503

Objective To optimize the enamel electron paramagnetic resonance (EPR) spectral processing by using the EPR spectral simulation method to improve the accuracy of enamel EPR dosimetry and reduce artificial error.Methods The multi-component superimposed EPR powder spectral simulation software was developed to simulate EPR spectrum models of the background signal(BS) and the radiation- induced signal (RS) of irradiated enamel respectively.RS was extracted from the multi-component superimposed spectrum of irradiated enamel and its amplitude was calculated.The dose-response curve was then established for calculating the doses of a group of enamel samples.The result of estimated dose was compared with that calculated by traditional method.Results BS was simulated as a powder spectrum of gaussian line shape with the following spectrum parameters:g =2.00 35 and Hpp =0.65 - 1.1 mT,RS signal was also simulated as a powder spectrum but with axi-symmetric spectrum characteristics.The spectrum parameters of RS were:g(1) =2.0018,g (11) =1.996 5,Hpp =0.335 - 0.4 mT.The amplitude of RS had a linear response to radiation dose with the regression equation as y =240.74x + 76 724 ( R2 =0.9947 ).The expectation of relative error of dose estimation was 0.13.Conclusions EPR simulation method has improved somehow the accuracy and reliability of enamel EPR dose estimation.

OBJECTIVETo obtain peptides binding specifically to Pisum sativum agglutinin (PSA) from a phage-displayed random peptide library.

METHODS(1) A phage-displayed random hexapeptide library was screened with PSA as target. (2) Dot blot was used to analyze the influence of the alpha-Met-D-mannoside on binding between PSA and phage-displayed peptides. (3) Three peptides (RMWSF, RYDYSY, LRLRQL) were selectively synthesized, and different concentrations were used to inhibit PSA and ConA binding to the HRP.

RESULTSThe enrichment occurred obviously after three rounds of screening. The insert sequences of amino acids, displayed on 22 phage DNAs from the third round of screening, were divided into three groups. The binding of phage-displayed peptides to PSA was specific as shown by dot blot and could be inhibited by alpha-Met-D-mannoside. LRLRQL was not dissolved in water. ARMWSF and RYDYSY inhibited binding of PSA to HRP, but failed to inhibit binding ConA to HRP.

CONCLUSIONThe binding site of peptides ARMWSF and RYDYSY is different to that of alpha-Met-D-mannoside.

Binding Sites ; Peptide Library ; Peptides ; metabolism ; Plant Lectins ; metabolism ; Protein Binding ; Recombinant Proteins ; metabolism

The residents health card is an important content for the health informatization construction in the new medical reform.The paper studies the factors that influence the issue and application of residents health card from the perspectives of management,technology and operation,and puts forward countermeasures for future issue and application of the residents health card based on the regional health information platform,namely,the govemment departments shall pay more attention,explore new operation modes,improve supporting functions of the platform,and establish the residents health card management system.

In this paper we present an easily available method of intracellular dialysis via a microcatheter inserted into glass pipette during patch clamp experiment. An oblique hole through the glass pipette holder (above the lateral hole for cell-seal suction) is drilled, through which a microcatheter (O.D.=0.1 mm) made from the universal pipetter tip by hand-drawing passes and sticks out of the holder mouth in parallel with the Ag-AgCl electrode. With a syringe connected to the microcatheter, substitution of intracellular solution and intracellular dialysis of drugs can be achieved easily. Compared with repatch technique and intracellular solution substitution techniques used abroad, this method operates more easily and can produce more reliable results.
Dialysis ; instrumentation ; methods ; Equipment Design ; Microelectrodes ; Patch-Clamp Techniques ; instrumentation

OBJECTIVEThe present study was designed to investigate the influence of viral myocarditis on mental behavior of the children.

METHODSMentality and behavior of the 178 children suffering from viral myocarditis were examined with Achenbach Child Behavior Checklist (CBCL) edited by Gong Yao-xian in 1986 and 104 sex, age, education and achievement-matched children with pneumonia or upper respiratory infection were enrolled as controls.

RESULTSThe mentality and behavior of the children with viral myocarditis were distinctly abnormal. The abnormal rates of boys and girls suffering from acute and deferment viral myocarditis were evidently higher than those of control children (P < 0.01). The behavioral abnormalities of boys were hypochondria, social difficulties, unwell of body and attack. Whereas, the girls presented hypochondria, unwell of body, social flinch and disobeyed discipline, which was significantly different from the control children. The total and hypochondria cursory mark of the second check result of deferment boys were evidently higher than those of the first check (P < 0.05). The total cursory mark of the second check result of deferment girls was higher than that of the first check (P < 0.05) and evidently higher than that of the acute second check result (P < 0.01). The abnormal rates of mentality and behavior correlated positively with the age of children and they were associated with the severity of the illness.

CONCLUSIONViral myocarditis evidently affected the mentality and behavior of children, which should be paid great attention to.

Acute Disease ; Adolescent ; Adolescent Behavior ; psychology ; Case-Control Studies ; Child ; Child Behavior ; psychology ; Child Behavior Disorders ; etiology ; psychology ; Female ; Humans ; Hypochondriasis ; etiology ; psychology ; Juvenile Delinquency ; psychology ; Male ; Myocarditis ; psychology ; virology ; Neuropsychological Tests ; Severity of Illness Index ; Social Behavior ; Virus Diseases ; psychology

OBJECTIVE: To evaluate the long-term efficacy and safety of ultrasound-guided percutaneous nephrolithotomy (PCNL) in the treatment of patients with solitary kidney stones. METHODS: The clinical data of 22 patients with solitary kidney stones treated with PCNL in Peking University People's Hospital from September 2008 to June 2014, with the follow-up data of more than 5 years were analyzed retrospectively. Perioperative indicators, postoperative stone free rate (SFR) and incidence of complications were recorded. Ultrasonography was used to evaluate the long-term stones recurrence rate. Serum creatinine and estimated glomerular filtration rate (eGFR) were used to assess the long-term renal function. RESULTS: In this group of 22 patients, the average age was (50.3±11.8) years, with 10 cases of anatomic solitary kidneys, 12 functional solitary kidneys, and the median stone diameter was 1.65 (1.1-3.9) cm. All the patients had multiple stones, including 7 cases of staghorn stones. The median pre-operative serum creatinine was 104.5 (60.0-460.0) μmol/L, and the mean eGFR was (60.3±29.4) mL/min, showing no statistically significant difference compared with that before surgery. The mean operative time was (88.2±42.0) min, and there were 11 cases of single-channel and double-channel PCNL. The median serum creatinine on the first day after surgery was 102.0 (63.0-364.0) μmol/L, and the mean eGFR was (58.0±25.1) mL/min. The mean postoperative hospital stay was (8.7±5.2) days. In this group, 5 patients (22.7%) presented short-term complications, among which 4 patients presented postoperative infection and massive hemorrhage at the same time, which improved after conservative treatment, and 1 patient presented pleural injury and improved after closed thoracic drainage. Two patients (9.1%) developed long-term complications, and ureteral stricture occurred 3 months after operation, which improved after balloon dilatation. The median follow-up time was 6.2 (4.7-11.1) years. The median serum creatinine at the last follow-up was 104.0 (72.4-377.0) μmol/L, and the mean eGFR was (60.1±23.7) mL/min, showing no statistically significant difference compared with that before surgery. Renal function decreased in 6 patients (27.3%). Initial and final SFR were 72.7% and 100%, respectively. During the 6.2-year follow-up, 9 patients (40.9%) experienced recurrence of kidney stone. After stone recurrence, 13 lithotomy surgeries were performed, and the SFR by the latest follow-up was 63.6%. CONCLUSION This study had the longest follow-up time for patients with solitary kidney stones after PCNL reported at home and abroad. Ultrasound-guided standard PCNL was safe and effective in the treatment of solitary kidney stones. Long-term follow-up results showed that the recurrence rate of kidney stones was still high, but the long-term renal function was stable after operation, and some patients showed mild renal function decline.
Adult ; Humans ; Kidney Calculi ; Middle Aged ; Nephrolithotomy, Percutaneous ; Retrospective Studies ; Solitary Kidney/surgery* ; Treatment Outcome