Objective To improve the diagnostic accurary of peripheral pulmonary masses before operation. Methods 55 cases of peripheral lung mass with percutaneous puncture biopsy under CT guidance were compared with the postoperative pathology. Results 44 out of 55 cases confirmed by operation were lung cancer. 40 cases showed consistent CT findings with pathology reaching accurate rate to 90.9% (40/44). 5 cases were tuberculous granuloma with accurate rate of 80% (4/5). 6 cases were inflammatory pseudotumor (with 2 cases of cryptococcal granuloma) showing accurate rate of 33.3% (2/6). Altogether 55 cases of peripheral lung masses were diagnosed correctly by CT with accurate rate of 83.6% (46/55). Conclusions Percutaneous puncture biopsy under CT guidance for peripheral lung lesions is safe and reliable especially for planning the management.

Objective To observe effects of senior neurogenic hypertension treated with microvascular decompression(MVD) Methods All 692 cases of senior cranial nerve disease with MVD were retrospectively analyze, 236 cases of preoperative neurogenic hypertension(prosopalgia 179 cases,facial spasm 48 cases, glossopharyngeal neuralgia 9cases)were treated with MVD Results In 236 cases,145 Patients had cure results(61 4%),36cases obvious effectiveness(15 3%),18 cases effectiveness(9 7%),32 cases ineffectiveness (13 6%) Two hundred and eight cases have been flowed up for 74 months average,133 cases had cure prognosis,30 cases obvious effectiveness,18 cases effectiveness,27 cases ineffectiveness Conclusion It is pathogenesis of neurogenic hypertension that oppressing cranial nerve roots and bulb by abnormal vascular tab leads to long term aching stimulation and emotional stress MVD is an effective treatment of neurogenic hypertension

Aim To investigate the inhibitory effects of zacopride(Zac) on arrhythmia induced by isoproterenol ( ISO) and the underlying mechanisms in rats. Meth-ods ①ECGs were recorded in anesthetized rats in vi-vo to observe the effects of zacopride on arrhythmia in-duced by ISO. ② Intracellular microelectrode tech-nique was used to investigate the effects of zacopride on resting membrane potential, delayed afterdepolariza-tions ( DADs) and triggered activity ( TA) induced by ISO combined with 3. 6 mmol·L-1 CaCl2 in right ven-tricular papillary muscle of rats. Results ① In ISO group rats, ventricular premature beats ( VPB ) oc-curred frequently with ST-segment depression. Com-pared with ISO group, the incidence of VPB in ISO+Zac group decreased from 100% to 50% ( n=6 , P<0. 05 ) and the total number of VPB recorded in 1 hour significantly reduced from 1 574 ± 521 to 33 ± 40 ( n=6,P<0. 05). ② Zacopride at 1 μmol·L-1 could hy-perpolarize the resting membrane potential of right ven-tricular papillary muscle in normal rat from ( -74. 42 ± 1. 95 ) mV to ( -78. 50 ± 2. 07 ) mV ( n =6 , P <0. 05). ③ Zacopride at 1 μmol·L-1 significantly de-pressed the DADs and TA induced by ISO combined with 3. 6 mmol·L-1 CaCl2 in right ventricular papilla-ry muscle. The incidence of DADs decreased from 93. 75% in rats in ISO group to 25% in ISO +Zac group ( n =16 , P <0. 05 ) , and this antiarrhythmic effect could be reversed by 1 μmol·L-1 BaCl2 . Conclusions Zacopride, a selective IK1 channel ago-nist , can significantly inhibit cardiac arrthymia induced by ISO in rats, the mechanism of which is mainly at-tributed to zacopride-induced hyperpolarization of the resting membrane potential and subsequent suppression of DADs and TA via enhancing IK1 . These results pro-vide further evidence that to enhance IK1 moderately may be a feasible pathway for antiarrthymic therapy.

AIM　To study the electrochemical behavior of ofloxacin at Pt/GC ion implantation modified electrode. METHODS　With Pt/GC ion implantation modified electrode as working electrode, the behavior of ofloxacin was studied by voltammetry in 0.40 mol*L-1 KCl solution. RESULTS　A sensitive reductive peak of ofloxacin was obtained by linear sweep voltammetry. The peak potential was -1.35 V (vs SCE). The peak current was proportional to the concentration of ofloxacin over the range of 1.0×10-6-3.0×10-5 mol*L-1 with the detection limit of 5.0×10-7 mol*L-1. The behavior of reduction wave was studied and applied to determination of ofloxacin in tablets. CONCLUSION　The reduction process was irreversible. The element composition, atomicity form and depth of distribution at the surface of Pt/GC electrode were determined by Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS) and scannig electron microscope (SEM). The catalysis behavior and reaction mechanism at Pt/GC modified electrode was also studied.

Objective To investigate the approaches and effect of Ilizarov external fixators combined with limited operation in treatment of posttraumatic clubfoot in children.Methods The study involved 40 cases (43 feet) of posttraumatic clubfoot treated with Ilizarov external fixators combined with limited operation including soft-tissue releases (26 cases,28 feet) or osteotomies (14 cases,15 feet)from January 2006 to June 2012.Scoring system of intemational clubfoot study group (ICFSG) including aspects of functional assessment (36 points),morphology (12 points) and radiological assessment (12points) were employed before and after surgery.Results All the cases were available to the follow-up of 0.5-6 years.ICFSG score was excellent in 28 feet,good in 10,fair in four and poor in one foot,with excellent-good rate of 88％.This suggested the good correction of posttraumatic clubfoot,satisfactory weight-bearing exercise and a low relapse rate.Conclusions Conservative open operation brings large trauma and poor results in treatment of posttraumatic clubfeet in children,while Ilizarov invasive distraction technique is probable to offset those weak points.Therefore,Ilizarov external fixators combined with limited operation is an effective treatment.

Aim To investigate the effect of zacopride ( Zac) on cardiac arrhythmia in isoproterenol ( ISO)-in-duced myocardial hypertrophic rats and the underlying electrophysiological mechanisms .Methods ① Fifty-one rats were randomly divided into control group ( n=17 ) , ISO group ( n=17 ) and ISO +Zac group ( n =17 ) .Rat model with cardiac arrhythmia and hypertro-phy was established by intraperitoneal ISO ( 5 mg?kg -1 ) injection.②ECGs were recorded to observe the effects of Zac on arrhythmia in model rats .③ Whole-cell patch clamp was applied to record inwardly rectifi-er potassium current(IK1), resting membrane potential ( RMP ) and amplicated delayed afterdepolarizations (DADs).Results ① Echocardiographic examination showed that , left ventricular end-diastolic dimension (LVEDD) and left ventricular end-systolic dimension (LVESD) significantly decreased in rats in ISO group compared with control group , whereas left ventricular posterior wall end-diastolic thickness ( LVPWd) and in-terventricular septum end-diastolic thickness ( IVSd ) increased ( P<0.05 ) , suggesting rat model of isoprot-erenol-induced myocardial hypertrophy was successfully established .② ECGs showed that 88.89% of rats in ISO group had ventricular premature beats ( VPBs ) , which significantly decreased to 11.11% after the ap-plication of Zac ( P <0.05 ) .③ Values of RMP de-creased from ( -71.05 ±1.27 ) mV in control group to (-69.38 ±1.21 ) mV in ISO group ( P<0.05 ) . After Zac administration , RMP significantly increased to ( -73.86 ±1.33 ) mV compared with control and ISO group(P<0.05).④DADs and TA incidence sig-nificantly decreased from 88.24% in ISO group to 11.76%in ISO+Zac group ( P<0.05 ) .⑤ Compared with control group , IK1 density was markedly reduced in ISO group, whereas Zac could effectively rescue IK1 suppression to normal level .Conclusions Zac, as a selective IK1 channel agonist , can significantly inhibit cardiac arrhythmia in isoproterenol-induced myocardial hypertrophic rats , which is mainly attributed to in-creased RMP by enhancing IK1 and subsequent suppres-sion of DADs.

Objective To investigate the arterial injury in vitro porcine kidney to different size of nephrostomy tracts. Methods The technique of percutaneous nephrostomy was applied to establish 11 groups of different size of nephrostomy tracts from 12 F to 32 F,with 40 tracts in every group.The technique of digital subtraction angiography (DSA) was used to inspect and analyze arterial injury. Results In the range from 12 F to 32 F,the damage of arterial injury increased with the size of the tract diameter.In groups of 20 F and 32 F,the number of nephrostomy tracts with serious arterial injury was 18 (18/40) and 30 (30/40) respectively,and the difference was statistically significant (P＜0.05).There was no statistical difference between groups 18 F、20 F、and 22 F. Conclusions The damage of renal arterial injury increased with the size of the nephrostomy tract.Atract of 20 F reduees arterial injury compared with a tract of 32 F.

Objective To explore the effects of minimally invasive removal of intracranial hematoma on blood-brain barrier (BBB) index, serum myelin basic protein (MBP) and activity of daily living (ADL) in hypertensive patients with cerebral hemorrhage.Methods Through observing 30cases operated within 3.0 hours, 32 case operated between 3. 1-8. 0 hours, 28 cases operated between 8. 1 to 24.0 hours and 22 cases operated over 24 hours, the changes of BBB index, serum MBP and ADL were analyzed. Results The BBB index and serum MBP were significantly lower in patients operated within 8. 0 hours than in patients operated over 8. 1 hours [≤3.0 hours group:(6.57±0.69)×10-3 and (3. 12±0.40)μg/L;3. 1-8.0 hours group: (7. 37±1.29)×10-3 and (3.25±0.60)μg/L;8. 1-2.0 hours group: ( 12. 02± 1.51 ) × 10 3 and (4. 60±0. 48)μg/L;over 24.0 hours group: ( 14. 68±2.07)×10-3 and (5.88±0.64)μg/L,Q＞13.8,P＜0. 05]. And the ADL was lower in patients operated within 8. 0 hours than in patients operated over 8. 1 hours [≤3.0 hours group: (2. 60± 1.07)scores; 3.1-8.0 hours group: (3. 06±0. 91 )scores;8. 1-24.0 hours group: (4.00±0.67) scores;over 24.0 hours group:(3.68±1.32)scores,Q＞3. 1,P＜0.05].Conclusions The minimally invasive surgery of intracranial hematoma within 8.0 hours can mitigate the cytotoxicity-damaged BBB so as to lighten brain edema and improve the patients quality of life.

Objective To investigate the correlation of single nucleotide polymorphism of rs3731055 and rs2607775 of xeroderma pigmentosum group C (XPC) and smoking with genetic susceptibility to pancreatic cancer.Methods The clinical data of 214 patients with pancreatic cancer who were admitted to the First and Third Affiliated Hospitals of Xinjiang Medical University from January 2009 to June 2011 and 214 healthly individuals were retrospectively analyzed.The samples of venous blood of 214 patients with pancreatic cancer (case group) and 214 healthy individuals (control group) were analyzed by the Multiplex SNaPshot method.The count data were analyzed using the chi-square test.The association between the single nucleotide polymorphism of rs3731055 and rs2607775 with genetic susceptibility to pancreatic cancer was analyzed using the Logistic regression method.Results Four hundred and twenty-three samples of gene were successfully typed,including 210 in the case group and 213 in the control group.The frequency of G allele of XPC rs3731055 was 75.95％ (319/420) in the case group and 77.00％ (328/426) in the control group,with no significant difference between the 2 groups (x2 =0.12,P ＞ 0.05).The frequencies of genotypes GG,GA and AA were 58.57％ (123/210),34.76％ (73/210) and 6.67％ (14/210) in the case group,and 60.09％ (128/213),33.80％ (72/213) and 6.10％ (13/213) in the control group,with no significant difference between the 2 groups (x2=0.12,P ＞ 0.05).The frequency of C allele of XPC rs2607775 was 87.86％ (369/420) in the case group and 93.43％ (398/426) in the control group,with significant difference between the 2 groups (x2=7.75,P ＜ 0.05).The frequencies of genotypes CC,CG and GG were 77.62％ (163/210),20.48％ (43/210) and 1.90％ (4/210) in the case group,and 86.85％ (185/213),13.15％ (28/213) and 0(0/213) in the control group,with significant difference between the 2 groups (x2=8.54,P ＜ 0.05).Patients with rs2607775 GC genotype were associated with a significantly increased risk of pancreatic cancer compared with patients with rs2607775 CC genotype (adjusted OR =1.81,95％ CI:1.06-3.10,P ＜ 0.05).Patients with rs2607775 GC + GG genotype were associated with a significantly increased risk of pancreatic cancer compared with patients with rs2607775 CC (adjusted OR =1.98,95％ CI:1.16-3.36,P ＜ 0.05).The ratio of patients in the case group who smoked cigarettes ≥ 17 pack years was 25.24％ (53/210),which was significantly higher than 13.15 ％ (28/213) of the control group (x2 =11.37,P ＜ 0.05).The results of univariate analysis showed that patients who smoked cigarettes ≥ 17 pack years had higher risk of getting pancreatic cancer (adjusted OR =2.82,95％ CI:1.27-6.29,P ＜ 0.05).Patients who smoked cigarettes ≥ 17 pack years and with rs2607775 CC also had higher risk of getting pancreatic cancer (adjusted OR =2.87,95％ CI:1.18-6.99,P ＜0.05).No significant gene-environment interaction was observed between rs2607775 GC + GG and smoking ≥ 17 pack years (adjusted OR =3.65,95％ CI:0.67-20.03,P ＞ 0.05).Conclusions The polymorphisms of XPC rs2607775 may play a role in the onset of pancreatic cancer.Patients who smoke cigarettes ≥ 17 pack years are more easily to have pancreatic cancer.There is no interaction between smoking and XPC rs2607775 in influencing the progression of pancreatic cancer.

Objective To study the effect and significance of transforming growth factor-?_1(TGF-?_1), and TGF-?_1mRNA in the pathogenesis of chronic pancreatitis. Methods The expression and distribution of TGF-?_1, and TGF-?_1mRNA in the pancreatic tissue in different stage of the pathogenesis of chronic pancreatitis were studied with immunohistochemical SP staining, in situ hybridization,and reverse transcription-polymerase chain reaction on the canine model of chronic pancreatitis . Results The Expression of TGF-?_1 and TGF-?_1mRNA were found in fibrotic tissues, fibroblasts, macrophages and endothelial cells of blood vessels.The expression of TGF-?_1 and TGF-?_1mRNA were high and lasting in the pathogenesis of chronic pancreatitis. Conclusions High expression of TGF-?_1 is closely related to the fibroblast proliferating activity, extracellular matrix overdeposition and proceeding fibrosis of pancreas.