Aim To investigate the method of cell culture for smooth muscle cells from rat cerebral basilar artery and understand cells growth and biological characteristics.Methods The explant attached method was applied for cell culture of rat basilar artery smooth muscle cells(BASMCs).The cultured BASMCs were identified by immunocytochemical staining.The activities of cells were indicated by the dynamic changes of intracellular calcium concentration observed by RF-5 000 fluorospectro-photometer.Results BASMCs grew out of tissue blocks by 5 days,reached confluency could be subcultured after 2 weeks.Cultured cells were identified by intensely positive immunocytochemical staining to smooth muscle actin-specific.Introduction of calcium channel agonists induced significant increase in Fura-2 fluorescence ratio(F340/F380)and cells were in good condiction.Conclusion Explant attached method is simple,efficient and economic.It provides an ideal cell model for the study of pathogenesis of the cerebral vascular diseases.

Objective: To ascertain the process condition of extraction Mashi Granules(Herba Ephedrae, Gypsum Fibrosum, Radix Puerariae, Herba Methal, Semen Armeniacae Amerum, etc.) Methods: In combination with area under the curve of hypothermy in rabbits, process water, macerating time and boiling times were used as parameters in uniformidy design. And then appropriate excipients were selected on the basis of hygroscopicity and granulation. Results: 20 times amount of water as much as herbs was added, macerating time reached as far as 40 min, and extracted 3 times, 2h a time. Excipient formula consisted of lactose and mannitol(4∶1, w/w). Conclusion: The experimental results provide the basis for the ascertainment of extracting process and formulation of Mashi Granules.

Objective To study the technique, clinical effect and safety of endoscopic calcaneoplasty for Haglund disease. Methods Clinical data of 12 patients with Haglund disease having underwent endoscopic calcaneoplasty were collected and retrospectively reviewed. All the patients experienced conservative treatment for 3 to 6 months which was failed and then turned to endoscopic calcaneoplasty. The American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score before and after operation, patient′s satisfaction and complication were recorded. Postoperative complications were also observed. Results All the patients underwent the operation successfully within 70 min, with 42 min on average, and no complications occurred. All the patients were followed up for 12.4 (8-16) months, the AOFAS ankle-hindfoot score after operation was significantly higher than before operation:94.6 (86-100) scores vs. 58.6 (32-72) scores, and there was statistical difference (P<0.05). After operation, 10 cases were excellent, and 2 cases were good. All patients were satisfied with the surgery, and no recurrence occurred during the follow-up period. Conclusions Endoscopic calcaneoplasty appears to be a safe, minimal invasive and effective surgical procedure for the treatment of Haglund disease.

AIM　To study the synthesis of zinc chlorin e4 (1), its experimental antigastrelcosis activity as well as the protection against acute liver injuries. METHODS　Chlorin e6 (3) was prepared through acidic and alkaline oxidative degradation using silkworm excrement crude chlorophyll extracts as starting material. Compound 1 was synthesized via Zn(OAc)2 complex action with Chlorin e4 (2) which was prepared by refluxing 3 in pyridine. Gastric ulcers were induced by abdominal injection of 0.2% indomethacin at 20 mg.kg-1 in rats. The ulcer indexes and ulcer numbers in gastric mucosa were determined. Acute liver injuries were induced by abdominal injection of 0.3% thioacetamide (TAA) or 0.3% CCl4 at 20 mg.kg-1 in mice, and activities of SGPT in mice were determined. RESULTS　Compound 1 is previously unknown. Compared with control group, abdominal administration of 1 at 100 mg.kg-1 reduced significantly the gastric ulcer index (P<0.001) and the number of ulcer (P<0.001) induced by indomethacin in rats. Abdominal administration of 1 at 100 mg.kg-1×3 exhibited marked inhibitory effects on elevated activities of SGPT induced by TAA (P<0.02) or CCl4 (P<0.01) in mice. CONCLUSION　These results show that 1 has significant protective effect against indomethacin-induced gastric lesion in rats and TAA or CCl4 induced acute liver injuries in mice. It is suggested that 1 may be a promising new drug candidate for antigastrelcosis and liver injury protection.

Objective To compare the application effects of different drug administration modes under continuous epidural anesthesia in elderly patients undergoing total hip replacement.Methods One hundred and twelve ASA Ⅱ-Ⅲelderly patients undergoing elective total hip replacement,55 males and 57 females,aged 75-91 years old,were randomly divided into the group A and B,56 cases in each group.After continuous epidural puncture success at L2-L3,the test dose of 2 ％ lidocaine 3 mL was injected,according the anesthesia plane,additional 2 ％ lidocaine 3-5 mL was injected,the group A adjusted the anesthesia plane to T10,after fixation,epidural continuous infusionof 2 ％ lidocaine 3 5 mL/h was performed according to the patient's condition;the group B adjusted the anesthesia plane to T10,after fixation,according to patient's condition epidural injection of 2 ％ lidocaine 3-5 mL/h was injected by several times.The two groups were given vasoactive drugs dopamine when necessary during operation.Mean arterial pressure(MAP),heart rate (HR) and pulse oxygen saturation (SPO2) at entering the operation room,30 min after medication injection,skin incision,postoperative 1 h and end of operation were recorded in the two groups.The anesthesia plane,anesthetic drug dosage,anesthesia effect and fotal dosage of dopamine were recorded in the two groups.Results Blood pressure after epidural drug administration in the two groups were significantly reduced,while the blood pressure after intraoperatively administrating additional drug in the group B was significantly decreased compared with the group A(P＜0.05).The anesthesia plane in the group A was more stable than that in the group B (P＜0.01),moreover the dosage of anesthetic drug was decreased significantly (P＜0.05).The intraoperative total amount of dopamine in the group A was obviously less than that in the group B (P＜0.05).Conclusion Micropump continuous drug administration during continuous epidural anaesthesia has little influence on the patient's hemodynamics than discontinuous single drug administration.In the condition without affecting the anesthesia effect,the anesthesia plane is more stable,the anesthesia drug dose can be significantly decreased,which is conducive to maintain the circulation stable and increase perioperative safety.

Objective To investigate the effect of small dose methoxamine on parturient′s circulation stability and neonate during anesthesia of cesarean section .Methods Two hundreds and eighty-five cases of cesarean section under combined spinal epi-dural anesthesia in the hospital from January 2014 to June 2016 were selected and divided into 3 groups .The group A was intrave-nously injected by 1 mg of methoxamine hydrochloride instantly after anesthesia ,the group B by 2 mg ,while the group C was intra-venously injected by 2 mL of normal saline .The basic values at calmness after entering the operation room (T0 ) ,systolic blood pres-sure (SBP) and heart rate(HR) at horizontal position immediately after anesthesia(T1 ) ,at 1 min(T2 ) ,5 min(T3 ) after anesthesia , at 1 min(T4 ) before fetus delivery and at 5 min after fetus delivery (T5 ) were recorded ,and neonatal umbilical arterial blood pH value ,blood gas indicators and Apgar score at 1 min after delivery were also recorded .The parturient appearing the adverse reac-tions such as nausea and vomiting during operation were observed .Results HR at T2 in the group B and C was significantly in-creased ,then decreased significantly (P<0 .05) ,while which at T1 in the group A began to decrease and HR at the various time points of T2 -T4 were significantly lower than those in the group B and C ,moreover had no big fluctuation (P<0 .05);SBP at T2 in 3 groups was significantly decreased compared with that at T0 (P<0 .05) ,but SBP at the various time points of T2 -T4 in the group A were significantly higher than those in the group B and C (P<0 .05);umbilical vein blood pH ,blood gas indexes and Ap-gar score at 1 min after birth had no statistically significant differences between the group A and B (P>0 .05) ,but which in the group C were significantly lower than those in the group A and B (P<0 .05);the adverse reaction rate in the group A was 2 .11% , which was significantly lower than 9 .47% in the group B and 13 .68% in the group C (P<0 .05) .Conclusion Small dose of me-thoxamine can effectively maintain the parturient′s hemodynamic stability after combined spinal epidural anesthesia in cesarean sec-tion and has no adverse effect on neonate .

Objective To investigate the risk factors of pathological upgrading in gastric mucosal lesions with low-grade intraepithelial neoplasia (LGIN) after endoscopic submucosal dissection (ESD).Methods From January 2010 to December 2016,the complete clinical data of 326 patients pathologically diagnosed with gastric LGIN lesions before ESD were retrospectively analyzed.Single factor analysis of variance and multiple factor Logistic regression analysis were performed to analyze the risk factors of pathological upgrading after ESD.Results A total of 326 patients with gastric LGIN lesions diagnosed by preoperative biopsy before ESD were enrolled.Among them the postoperative pathological diagnosis of 244 cases (74.85％) were still LGIN,while the postoperative pathological diagnosis of 82 cases (25.15 ％) were upgraded,of which 61 cases (18.71％) were upgraded to high-grade intraepithelial neoplasia and 21 (6.44％) were upgraded to gastric early cancer.The results of single and multiple factor analysis indicated that lesion size≥2.0 cm,deep depressed-type,surface erythema,lesion mucosa with ulceration and lesions with spontaneous bleeding were the risk factors of pathological diagnosis upgrading after ESD (F=5.37,6.44,4.56,7.56 and 7.78,respectively;all P＜0.01),odds ratio (OR) value and 95％ confidence interval (CI) were 4.086 (2.035 to 10.786),7.435 (2.845 to 19.862),3.205 (1.535 to 8.541),8.668 (3.365 to 21.457) and 7.056 (2.732 to 18.355).The age,gender and location of the lesion were not the risk factors.Conclusions Pathological upgrading is common in gastric lesions with LGIN after ESD.The lesions with high risk factors should be alerted and treated more actively.

Objective To evaluate the surgical treatment of complex acetabular fractures through the lateral-rectus approach with pelvic reconstructive plate and antegrade posterior-column lag screws.Methods Between January 2014 and April 2018,29 patients were surgically treated for complex acetabular fractures at Department of Orthopaedic and Trauma,Taihe Hospital.They were 22 males and 7 females,aged from 19 to 72 years(mean,41.7 years).According to the Letournel-Judet classification,there were 4 transverse fractures,7 T-shape fractures,15 both column fractures and 3 anterior plus posterior hemitransverse fractures.In all the patients,the lateral-rectus approach was adopted;their anterior column fractures were fixated with pelvic reconstructive plate and screws and their posterior column fractures with antegrade lag screws.The operation time,intraoperative bleeding,fracture reduction,fracture union time,function of the affected hip and complications were recorded.Results The operation time ranged from 50 to 140 min,averaging 85 min;the volume of intraoperative bleeding ranged from 150 to 1,100 mL,averaging 315 mL.By the Matta criteria,the reduction was rated as excellent in 21 cases,as good in 7 and as poor in one,giving an excellent to good rate of 96.6％.The average follow-up was 16.2 months (from 6 to 30 months) for the 29 patients.Their fractures got united after an average of 11 weeks (from 7 to 13 weeks).According to the Merle d'Aubigné & Postel scoring system at the last follow-up,the function of the affected hip was excellent in 20 cases,good in 7 and fair in 2,yielding an excellent to good rate of 93.1％.There was one case of vasospasm of external iliac artery.No such complications were observed by follow-up as infection,deep venous thrombosis,heterotopic ossification,osteoarthritis or avascular necrosis of the femoral head.Conclusions The lateral-rectus approach with pelvic reconstructive plate and antegrade posterior-column lag screws is a suitable surgical treatment for complex acetabular fractures,leading to satisfactory clinical results.The lateral-rectus approach provides adequate exposure of the quadrilateral surface and facilitates insertion of the posterior column antegrade lag screws.

Objective To investigate the risk factors for postoperative deep wound infection after open reduction and internal fixation for closed calcaneal fractures.Methods From January 2014 to January 2017,190 patients with closed calcaneal fracture were treated at Department of Traumatic Orthopaedics,Taihe Hospital.They were 118 males and 72 females with an average of 39.8 years (range,from 18 to 73 years).They were divided into a deep infection group and a non deep infection group according to the presence or absence of deep wound infection in the follow-up period.The 2 groups were compared in the general clinical data.In statistical analysis,the related risk factors were first screened by single factor analysis and followed by multivariate logistic regression analysis to identify the independent risk factors associated with the postoperative deep wound infection in patients with closed calcaneal fracture.Results The 190 patients were followed up for an average of 21.3 months(range,from 13 to 31 months).Postoperative deep wound infection occurred in 11 patients,giving an overall incidence of 5.7％ (11 / 190).The single factor analysis showed that the deep infection group incurred significantly longer time for tourniquet and used significantly more conventional extensile lateral approach than the non deep infection group (P ＜ 0.05).There were no significant differences between the 2 groups in general data,injury cause,fracture type,drainage,or incision closure technique (P ＞ 0.05).The multivariate logistic regression analysis revealed that tourniquet time ＞ 80 min (OR=5.949,95％ CI:1.216～ 29.108,P=0.028) and conventional extensile lateral approach (OR =5.414,95％ CI:1.507 ～ 19.452,P =0.01) were independent risk factors fo r the postoperative deep wound infection in patients with closed calcaneal fracture after open reduction and internal fixation.Conclusions Tourniquet time and conventional extensile lateral approach may be the independent risk factors for postoperative deep wound infection in patients with closed calcaneal fracture after open reduction and internal fixation.Therefore,it is important to adopt the sinus tarsi approach and control tourniquet time within 80 minutes for prevention of deep wound infection as long as the surgical quality is ensured.