Objective:To evaluate the osteogenic activities of Bio-oss after combining with fibrin glue in reconstruction of canine mandibular defects.Methods:The second and fourth premolar teeth and the second molar teeth were extracted bilaterally, in 9 hibrid canines,resulting in 6 bone defects(1 cm?1 cm)in each canine.Bio-oss,Bio-oss+FG and FG were implanted into the bone defects of the second,fourth premolar teeth and the second molar teeth,respectively.Canines were executed in group of 3 after 4,8,and 12 weeks to observe the healing of soft tissues.The bone density was assessed by X-ray,the property of Bio-oss were observed via gross specimen,and the morphology of the newly-formed bone was observed by tissue sections.The proportion of newly-formed bone was obtained by computer image analysis(SAS software,analysis of variance).Results:StageⅠhealing of soft tissues was achieved in all animals.The bone densities were not significantly different between Bio-oss+FG and Bio-oss groups.The bone in FG group had transparent area.We also found that the bone in Bio-oss+FG group was closely combined and there were sccatered Bio-oss dusts in the soft tissues of the Bio-oss group.The newly-formed bone in the FG group was only found in the border between the defects and FG.The proportion of newly-formed bone was less in the Bio-oss+ FG group than in the Bio-oss group at 4,8,and 12 weeks after extraction(P

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biopsy ; methods ; Child ; Child, Preschool ; Endoscopy ; Female ; Humans ; Larynx ; pathology ; Male ; Middle Aged ; Nasopharynx ; pathology ; Young Adult

Objective To evaluate the efficacy and safety of continuous suture by QuillTM SRS self-retaining suture for closing choledoch incision. Methods From January 2015 to October 2015, 66 patients with gall bladder calculi combined with common bile duct stones who received laparoscopic gallbladder excision, common bile duct explo-ration, laparoscopy choledochotomy, suture choledoch immediately were randomly divided into two groups, experi-mental group using QuillTM SRS self-retaining suture for closing choledoch incision and control group using tradi-tional absorbable suture for closing choledoch incision. Then observe the operation time, the risk of bile leakage oc-curred in the operation and the risk of bile leakage after operation. Results All patients successfully completed in laparoscopic surgery without laparotomy. Operation time, the risk of bile leakage occurred during operation in exper-imental group has statistically significant difference compared with control group ( < 0.05). The operation time and incidence of intraoperative bile leakage of the experimental group was less and lower than control group, while the risk of bile leakage after operation show no statistically difference ( >0.05). Conclusion Compared with interrupted suture by normal sutures, continuous suture by QuillTM SRS self-retaining suture for closing choledoch incision has the characteristics of shorter operation time and lower incidence of intraoperative and postoperative bile leakage. It is worthy of promoting.

The scientific papers in "Chinese Journal of Medical Instrumentation" from 1997 to 2001 have been analysed by bibliometrics, including the characteristics of the periodical, its author's areas, units distribution and quotations. Some suggestions have been put forward to promote the biomedical engineering research.
Bibliometrics ; China ; Equipment and Supplies ; Humans ; Multivariate Analysis ; Periodicals as Topic ; statistics & numerical data

Objective To investigate the clinical effect of laparoscopic reverse papillary intubation through cystic duct and laparoscope combined with duodenoscope in the treatment of cholecystolithiasis and thining choledocholithiasis.Methods The retrospective cohort study was adopted.The clinical data of 192 patients with cholecystolithiasis and thining choledocholithiasis who were admitted to Chengdu Second People's Hospital between May 2012 to August 2015 were collected.The 96 patients who underwent laparoscopic reverse papillary intubation through cystic duct were allocated into the case group,and the other 96 who received surgery by laparoscope combined with duodeuoscope were allocated into the control group.All the patients underwent laparoscopic cholecystectomy (LC) according to routine approaches.The 96 patients in the case group received the placement of 4 Fr ureter catheter via cystic duct and placement of common bile duct inserted through the duodenal papilla under laparoscope,and then the duodenal papilla was resected using needle knife along the ureter catheter and stones were removed by basket lithotriptor and ball lithotriptor.The 96 patients in the control group received the intubation using the bow knife with zebra guidewire,and stones were removed by basket lithotriptor and ball lithotriptor.During the operations,it was observed whether there were residual stones by nasobiliary radiograph.The comparison was made between the 2 groups concerning (1) surgical situation:intubation and operation time.(2) Postoperative alanine transaminase (ALT),postoperative aspartate transaminase (AST),postoperative total bilirubin (TBil),postoperative blood amylase,postoperative lipase,complications and extubation time.(3) Situation of follow-up:follow-up was done by outpatient examination or telephone interview up to November 2015.The stones recurrence was detected by retrograde cholangiography through nasal bile duct,magnetic resonance cholangiopancreatography (MRCP) or ultrasonic examination.Measurement data with normal distribution were represented as x ± s.Comparison between groups was done by the t test.Count data were analyzed by the chi-square test.Results (1) Surgical situation:2 groups both underwent successful LC.Ureteral catheter in the case group was successfully imbedded through cystic duct,including 8 patients with being difficult to intubate.Five patients in the control group were failed in endoscopic sphincterotomy (EST) due to periamullary diverticula or other causes,and then EST was performed again by the duodenal papilla through ureteral catheter which was intubated through cystic duct.Operation time of the case group and control group was (89 ± 17) minutes and (105 ± 26) minutes,respectively,with a statistically significant difference between the 2 groups (t =5.05,P ＜ 0.05).(2) Postoperative situation:ALT,AST,TBil of the case group and control group were (163 ±54)U/L,(87 ±38)U/L,(43 ± 18)tmol/L and (147 ±49) U/L,(101 ± 26) U/L,(37 ± 17) μmol/L,respectively,showing no statistically significant differences (t =0.97,1.21,0.84,P ＞ 0.05).Postoperative blood amylase and lipase of the case group and control group were (151 ± 41) U/L,(198 ± 72) U/L and (395 ± 142) U/L,(549 ± 217) U/L,respectively,showing statistically significant differences (t =16.18,15.05,P ＜ 0.05).No pancreatitis was found in the case group while 6 patients in the control group complicated with mild pancreatitis were improved by symptomatic treatment of fasting,somatostatin administration and acid suppression,with no severe pancreatitis.No complications such as intestinal perforation,bile duct perforation and massive hemorrhage were detected in both groups after operation.No death occurred.The nasal bile duct in the patients without pancreatitis was removed at postoperative day 3.The nasal bile duct in the patients with pancreatitis was removed after the remission of abdominal pain and diet intake.In the case group,it was difficult to remove the nasal bile duct of 1 patient.Nasal bile duct radiograph showed that the bending section of nasal bile duct was mistakenly sutured by the absorbable thread at the lower margin of incision of junction of cystic ducts,and yet there was unobstructed biliary drainage.The nasal bile duct was removed and the patient was discharged from hospital at postoperative day 19.The abdominal drainage tubes were removed at postoperative day 3 to5 in both groups.(3) Of 192 patients,151 were followed up for a median time of 10 months (range,3-12 months).Patients had good recovery without recurrence of abdominal pain,jaundice and stones.Conclusion Laparoscopic reverse papillary intubation through cystic duct for the treatment of cholecystolithiasis and thining choledocholithiasis is safe and feasible,and it can also reduce incidence of pancreatitis after nasobiliary drainage.

Three candidate antisense target sites of mouse Fas gene were screened by PARASS (poly-A anchored RNA accessible sites screening) technology. They were target at Fas gene 297nt-317nt, 618nt- 638nt and 662nt-682nt. Antisense oligos (A1, A2 and A3) and DNAzymes (D1, D2, and D3) for every target site were designed and synthesized. In vitro, the validation of the sites were judged by antisense oligos included RNase H splicing and the DNAzyme degradation. The results indicated that A1, A2 and A3 introduced RNase H degradation. DNAzymes D1, D2 and D3 cleaved Fas mRNA effectively. Neither degradation observed in antisense oligo RNase H group in non-target site (1211-1231nt) and 2 bases mismatched of A3, nor splicing occurred in DNzyme group in non-target site ( 1211-1231nt) and 2 bases mismatched of D3. Site 2 and 3 were at the same positions with those of ISIS Pharmaceuticals. The effective antisense oligos and DNAzymes for Fas gene could be used for the research subsequently.

Objective To investigate the protective effects of the 14-3-3 protein overexpression on the injury of PC12 cell induced by MPP~+ and its mechanisms.Methods For expression in mammalial cells, pcDNA3.1(+)-14-3-3 plasmid was constructed and transfeeted into PC12 cell with Lipofectamine~(TM)2000. The overexpression of transfected 14-3-3 gene in PC12 cell was determined by immunofluorescence and Western blotting.The effects of 14-3-3 overexpressing on the cells viability,apoptotie ratio and the activity of superoxide dismutase(SOD)as well as glutathione peroxidase(GSH-Px)of PC 12 cell treated with MPP~+ were measured by MTT assay,flow cytometry analysis and microplate reader respectively.Results The expression of 14-3-3 protein in transfection group(1.19?0.06)increased evidently compared with control group(0.75?0.05).And the antioxidant enzyme activity assession,MTT assay and flow cytometry analysis shows that the overexpression of 14-3-3 protein elevates the activity of SOD(transfection group:(9.13? 0.41)U/mg protein,MPP~+ group:(6.45?0.52)U/mg protein)and GSH-Px(transfection group: (89.66?3.42)?mol/mg,protein MPP~+ group:(82.73?4.15)?mol/mg protein),increases the cell viability(transfection group:0.78?0.06,MPP~+ group:0.54?0.07),and inhibits cell apoptosis (transfeetion group:11.87%?3.26%,MPP~+ group:36.30%?2.39%)of PC12 induced by MPP~. Conclusion The overexpression of 14-3-3 protein could elevate the activity of antioxidant enzymes SOD and GSH-Px,reduce oxidant stress,alleviate MPP~+ toxicity,and thus inhibit the apoptosis of PC12 cell induced by MPP~+.

OBJECTIVETo explore the effective therapeutic method in the treatment of idiopathic sudden hearing loss (ISHL).

METHODSOne hundred and eighty-eight cases of ISHL were randomized into a warming-promoting needling group (74 cases), a conventional acupuncture group (56 cases) and a medication group (58 cases). In the conventional acupuncture group, the conventional needling technique was applied to Baihui (GV 20), Fengchi (GB 20), Yifeng (TE 17), Tinggong (SI 19), Touqiaoyin (GB 11) and Zhigou (TE 6) on the affected side. The treatment was given 5 times each week. Totally, the treatment of 6 weeks was required. In the warming-promoting needling group, on the basic treatment as the conventional acupuncture group, the warming-promoting needling technique was applied to Fengchi (GB 20). In the medication group, the intravenous drop with salvia injectio and mecobalamin was prescribed, once per day, for 10 days totally. Meanwhile, Erlong Zuoci Wan was prescribed for oral administration, 8 pills each time, three times a day for 30 days continuously.

RESULTSAll of the three therapeutic methods achieved the effect on ISHL. The total effective rate was 89.2% (66/74) in the warming-promoting needling group, which was better than 62.5% (35/56) in the conventional acupuncture group and 53.4% (31/58) in the medication group (both P<0.01).

CONCLUSIONThe warming-promoting needling techinque achieves the significant efficacy on ISHL. The hearing improvement is superior to that treated with either the conventional needling technique or medication.

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; Adult ; Female ; Hearing Loss, Sudden ; therapy ; Humans ; Male ; Middle Aged ; Needles ; Treatment Outcome

OBJECTIVETo evaluate whether or not administration of folic acid and resveratrol have preventive effects on cleft palate formation as well as the comparison of the two drugs' s effects.

METHODSPregnant mice were randomly divided into 9 groups, with 8 mice in each group. The TCDD group mice were dosed with TCDD 28 microg/kg body weight on gestation day 10 (GD 10) animals in folic acid group were respectively dosed with folic acid 15, 10, 5 mg/kg and TCDD 28 microg/kg; resveratrol treated mice were divided into 3 groups: resveratrol 50 mg/kg were orally administered for 6 consecutive days, from gestational day GD 8 to GD13 in resveratrol (GD8-13 ) group; resveratrol 50 mg/kg were orally administered for 6 consecutive days, from gestational day GD 8 to GD13, followed hy an oral administered with TCDD on GD10 in resveratrol (GD8-13) + TCDD group; resveratrol 50mg/kg and TCDD 28 microg/kg were used by gavage administration at GD10 in resveratrol (GD10) + TCDD group. Control mice were treated with the same volume of water for 6 consecutive days from GD8 to GD13 and were given a single dose of corn oil on GD10. The pregnant mice weight and embryos, the number of live, cleft palate, dead and resorption fetal mice were recorded on GD 17.5. The coronal sections of the fetal mice heads were prepared at GD 17.5 and observed by microscopy.

RESULTSTotal frequency of clefts was 92.86% in TCDD group, 84.00% (15 mg), 73.08% (10 mg), 84.00% (5 mg) in folic acid + TCDD groups, 0% in resveratrol (GD10) group, 74.51% (GD10), 57.78% (GD8-13) in resveratrol + TCDD groups. The frequency of cleft was 0% in the control group. Compared with the control and the TCDD groups, there were significant differences in the number of live, dead and resorption fetal mice in TCCD + resveratrol (GD8-13) group (P < 0.05). No significant differences in embryonic weight, live fetuses weight, the number of live, dead and resorption fetal mice were found in the other groups (P > 0.05).

CONCLUSIONTest dose of folic acid and resveratrol both had certain antagonistic effect on cleft palate in mice induced by TCDD, with folic acid 10 mg/kg, resveratrol 50 mg/kg GD8-13 doses having stronger antagonistic action. Effects of both the two drugs have no significant difference, but resveratrol (50 mg/kg, GD8-13) significantly affects the fetal mice's growth and development under TCDD exposure in utero.

Abnormalities, Drug-Induced ; prevention & control ; Animals ; Cleft Palate ; chemically induced ; prevention & control ; Female ; Fetus ; Folic Acid ; administration & dosage ; pharmacology ; Humans ; Mice ; Mice, Inbred C57BL ; Polychlorinated Dibenzodioxins ; antagonists & inhibitors ; Pregnancy ; Random Allocation ; Stilbenes ; administration & dosage ; pharmacology ; Teratogens