BACKGROUND: The application of adipose derived stromal cells to tissue engineering has been more and more popular around the world. Compatibility of scaffold material is the key point for its further research.OBJECTIVE: To determine the growth rules of rabbit adipose-derived stromal cells with polylactic-co-glycolic acid (PLGA).DESIGN, TIME AND SETTING: An in vitro study was performed at the Institute of Ophthalmology, Otolaryngology Hospital,Fudan University and Shanghai Tissue Engineering Center from September 2007 to March 2009.MATERIALS: Six female New Zealand rabbits aged six months were used for extraction of adipose-derived stromal cells. PLGA was provided by Sigma, USA.METHODS: Adipose tissue was harvested from the nape fat pad of the rabbits following anesthesia. Primary cultured cells were established using type I collagenase and cell cultures were maintained with DMEM containing 10% volume fraction of fetal bovine serum. Cells were passaged when 80% was confluent. The fourth passages of cells were utilized for the study. PLGA consisted of polylactic acid and polyglycolic acid as the ratio of 7:3, and the relative molecular mass was 104900.MAIN OUTCOME MEASURES: Initially, the adherent rate of cells to scaffold was detected. After one week co-culture, the scaffold bearing adipose-derived stromal cells labeled with Dio agent were investigated by fluorescence inverse microscope,scanning electron microscopy and laser scanning microscope.RESULTS: The best adherent rate of adipose-derived stromal cells with PLGA reached 99%. After one-week-incubation in vitro,cells of fiber-shaped or ovule-shaped proliferated well and exhibited stratified growth on the surface of PLGA scaffold. In addition,it also secreted visible extracellular matrices, which could be examined by scanning electron microscopic examination.Meanwhile, the adipose-derived stromal cells grew well and distributed equably inside the PLGA in terms of the investigation with laser scanning microscope.CONCLUSION: The compatibility of adipose-derived stromal cells to PLGA in vitro was well.

Objective To explore the therapeutic effect of low level laser irradiation (LLLI) on cerebral infraction combined with hypertension.Methods Two groups were divided, conventional treatment group and laser irradiation combined with conventional treatment group.LLLI (650 nm, 20 mW, 20 min, twice a day, two weeks therapy) was used by extravascular way in addition to conventional treatment, while control group employed conventional treatment only.Whole blood viscosity, plasma blood pressure, lipid and neurological function were assessed by comparing the index of the two groups.Results Whole blood viscosity, plasma viscosity, whole blood high shear reductive viscosity, hematokit (HTC), erythrocyte deformation index, erythrocyte rigidity index, fibrinogen and blood lipid level of both groups decreased and the decrease of the testing group was more significant than that of control group (P＜0.05 or P＜0.01).Neurological deficit score an blood pressure of both groups showed significant decrease (P＜0.05), and the decrease in blood pressure of testing group was significant than that of the control group (P＜0.05 or P＜0.01).Conclusions 650 nm extravascular LLLI may be effective in treatment of cerebral infraction combined with hypertension, and has a good application prospect.

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.

Objective To investigate the morphologic features of Bachmann bundle (BB) and its vascular supply on dual-source CT coronary angiography(DSCTCA) in healthy volunteers and patients with coronary artery lesion (CAL). Methods Clinical histories, electrocardiograms (ECGs), and images of DSCTCA of 106 patients ( CAL group) and 100 healthy volunteers ( Control group) were reviewed. All 106 patients underwent conventional coronary angiography ( CCA ). The Gensini scoring system was used to assess the results of CCA. The patients were divided into three groups according to their Gensini scores. The length, width and superoinferior diameter, CT value, and vascular supply of BB were studied. Rank sum test for continuous variables and Chi-square test for categorical variables were used in statistical analysis.Results ( 1 ) BB visualization rate of control group was higher than CAL group [86.0% (86/100) vs 51.9%(55/106), x2 = 27.726, P ＜ 0.01]. The higher the Gensini score of CAL subgroup, the lower the visualization rate of its BB [80.0% ( 28/35 ), 55.6% ( 20/36 ), 20.0% ( 7/35 ), x2 = 25.530, P ＜ 0.01].(2)The median of measurements of length,width and superoinferior diameter of control and CAL group were 13.0 vs 13.8,5.0 vs 5.2 and 5.9 vs 6.2 mm, respectively ( P ＞ 0.05 ). (3) The CT value of the BB region in control group( median :42.6 HU ) was higher than that of CAL group( median: 13.0 HU) ( Z = - 7.061, P ＜0.01). The CT values of BB regions in patients with nonvisualized BB (median: -16.0 HU) were lower. The CT values of the BB regions in CAL group were negatively-correlated with Gensini scores( median:19.0) (r = -0.553, P ＜0.01 ). (4)The blood supply of BB and BB region was provided by right sinuatrial node artery ( SNA, 58.7%, 121/206 ), left SNA ( 35.9%, 74/206 ) or both SNAs ( 5.3%, 11/206 ).Conclusions DSCTCA could can show the anatomical characteristics of BB and its arterial supply. The serious the degree of CAL , the lower the BB display rate, and the higher the abnormal ECG incidence,which indicate that the occurrence of BB lesions is probably related to ischemia.

OBJECTIVETo demonstrate the effects and mechanisms of Qifu decoction( QFD) on renal interstitial fibrosis (RIF) in model rats with yang-deficiency syndrome.

METHODThe rats were randomly divided into 3 groups, the Sham group (Group A), the Model group (Group B), the Qifu decoction group (Group C) and the Enalapril group (Group D). The RIF model was established by adenine administrated and unilateral ureteral obstruction (UUO) of the left ureter. After the model was successfully established, the rats in Group C and D were administrated with QFD or the Enalapril suspension,while the rats in Group A and B were administrated with distilled water. All rats were administrated for 3 weeks. Before administration and at the end of week 1, 2 and 3, the rats were weighted, and 24 h urinary protein excretion (Upro), urinary β2-microglobulin (Uβ2-MG) and urinary N-acetyl-D-glucosaminidase (NAG) were examined, respectively. All rats were killed after administration for 3 weeks. Blood and renal tissues were collected, renal morphology and tubulointerstitial morphology were evaluated, respectively. Serum cyclic adenosine monophosphate (cAMP), cyclic guanosine monophosphate (cGMP), blood urea nitrogen (BUN), serum creatinine (Scr) and uric acid (UA) were detected, respectively. The protein expressions of E-cadherin, α-smooth muscle actin(α-SMA), transforming growth factor-β1 (TGF-β1), onnective tissue growth factor (CTGF) extracellular signal-regulated protein kinase 1/2(ERK1/2) and phosphorylated-ERK1/2 (p-ERK1/2) in kidney were evaluated, respectively.

RESULTQFD ameliorated serum cAMP level and the rate of cAMP/cGMP, attenuated urinary β2-MG level, NAG level and renal tubulointerstitial fibrosis, increased E-cadherin protein expression, and reduced α-SMA, TGF-β1, CTGF and p-ERK1/2 protein expressions in the kidney. However, QFD had no influence on renal function in vivo. In addition, these effects were better than those of the model rats treated by Enalapril.

CONCLUSIONQFD could alleviate yang-deficiency parameters, as well as urinary β2-MG level and NAG level in model rats induced by adenine administration and UUO. Moreover, QFD could improve EMT and RIF by up-regulating E-cadherin protein expression, and down-regulating α-SMA, TGF-β1, CTGF and p-ERK1/2 protein expressions, the key molecular in ERK1/2 signaling pathway.

Animals ; Drugs, Chinese Herbal ; pharmacology ; Extracellular Signal-Regulated MAP Kinases ; antagonists & inhibitors ; Fibrosis ; Kidney ; drug effects ; pathology ; Kidney Diseases ; drug therapy ; pathology ; MAP Kinase Signaling System ; drug effects ; Male ; Rats ; Rats, Sprague-Dawley ; Ureteral Obstruction ; complications ; Yang Deficiency ; complications

In chronic kidney disease (CKD), inflammatory responses during the progression of renal tissue and tissue injury related causes its progression to end-state renal disease. Among them, nuclear factor (nuclear factor, NF)-kappaB signaling pathway by regulating the corresponding nuclear expression of target gene transcription, as well as affecting the synthesis of inflammatory mediators, induction of inflammation lead to kidney damage and renal fibrosis. Some single herbs and their extracts (such as Astragali Radix, Scutellariae Radix, Ginkgo Folium) and some traditional Chinese medicine (such as Danggui Buxue decoction, Qilian decoction) can reduce the inflammatory damage induced by renal tissue NF-kappaB signaling pathway and delay the progression of CKD.
Animals ; Humans ; Kidney ; drug effects ; pathology ; Medicine, Chinese Traditional ; methods ; NF-kappa B ; metabolism ; Renal Insufficiency, Chronic ; drug therapy ; pathology ; Signal Transduction ; drug effects

Objective To detect the changes of the brain white matter microstructure at the acute stage of posttraumatic stress disorder(PTSD)resulting from a single,extreme and long-lasting trauma.Methods DTI scans were performed on 1 7 survivors of coal mine disaster(PTSD group)and 1 7 cases of normal control(control group).The differences of the mean diffusivity(MD)values measured from the whole brain DTI between the two groups were analyzed based on tract based spatial statistics (TBSS).MD data were statistically compared between the two groups based on nonparametric random permutation test(RPT),and the brain areas of significant differences between the two groups were obtained.Results Compared with the control group,MD values were increased in the bilateral rostral corpus callosum body and left precorona radiata,and decreased in the bilateral superior and posterior corona ra-diate,posterior limb of the left internal capsule,left cerebral peduncle and left thalamic.The differences were statistically significant (P <0.01 TFCE-corrected).Conclusion TBSS is a comprehensive and accurate method for evaluate the changes of brain white mat-ter in PTSD cases.TBSS can provide an objective basis of the pathological brain neural structures imaging for early diagnosis and in-tervention of PTSD.

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.

An endophytic bacterium strain EBS05 from Cinamonum camphra was identified as Bacillus subtilis by morphological taxonomy and sequence analysis of 16S~23S rRNA intergenic spacer regions. Properties of antimicrobial compound produced by EBS05 were assayed. The active compound had the maximum absorbance peak at ?213.5 nm. The antimicrobial activity was stable in solution with pH value from 5 to 8, and decreased significantly in solution with pH value less than 4.0 or more than 9.0. The antimicrobial compound had thermodynamics stability. Its activity changed a little after treated at 60?C~80?C for two hours, and compared with 65% original activity after treated at 1?105 Pa for 30 minutes. The active substance had high resistance to ultraviolet radiation and protease K. Antimicrobial compound was soluble in alcohol solu- tion, which was easily dissolved in methanol and ethanol, but not dissolved in ethyl acetate, acetonitrile and petroleum et al.

During the process of electroacupuncture (EA) therapy, whether there being a corrosive effect in ac- upuncture needles was observed. Acupuncture needles were inserted into a rabbit's acupoint to perform a 12-hour electrical stimulation with three types of common EA waveform; additionally two needles were put in 0.9% sodium chloride solution with 12-hour direct current. Afterwards, environmental scanning electron microscope was applied to detect the surface physical characteristics of acupuncture needles. As a result, after a 12-hour continued electri- cal stimulation with three types of common EA waveform in the rabbit, there was no corrosive effect in acupunc- ture needles; but the direct current could cause severe corrosion in acupuncture needles. It is believed that there is no corrosion effect on acupuncture needles in current EA treatment, and some accidents reported in literature may be related to quality of EA device or improper manipulation during the treatment.
Acupuncture Points ; Animals ; Corrosion ; Electroacupuncture ; instrumentation ; Male ; Needles ; adverse effects ; Rabbits