To study a method for determination of sulfamethoxazole, sulfadiazine and trimethoprim tablets, a compound tablet of sulfamethoxazole, sulfadiazine and trimethoprim. METHOD: A capillary zone electrophoresis (CZE) method was used to assay three components of this compound preparation. RESULTS: The complete separation of components was achieved with 0.05 molL-1 pH 6.0 running phosphate buffer and a constant voltage of 20 kV (current of 95 μA～105 μA). The retention times of individual components were between three and eight minutes and a good linearity was shown between concentration and peak area in the concentration range over 70 μgml-1～750 μgml-1. When acetanilide was used as internal standard, the relative standard deviation (RSD) of each component determined in a batch was less than 1% (n=9). The recovery of each component was not less than 96.45% with RSD less than 3%. The analytical results obtained from 6 samples of clinical use were inconsistent with those by standard method, however the quantity of each sulfa drug was obtained by CZE method. CONCLUSION: The results showed this method is accurate, simple, and rapid. When this method is used, the quantity of each three components is determined, but by the standard method, only the total quantity of the two sulfa drugs is obtained.

0.05).Combination of NGF with bFGFs(10 U/ml NGF+10 ?g/L bFGF or 5 U/ml NGF+5 ?g/L bFGF) not only promoted the proliferation of HDPCs(P

Objective To evaluate the feasibility and the diagnostic value of virtual touch tissues quantification(VTQ) in discriminating breast benign and malignant solid tumors.Methods A total of 72 patients with 76 breast solid tumors and the normal glandular tissues were examined by means of VTQ technique.The reproducibility of VTQ values was analyzed with intraclass correlation coefficient (ICC).Compared with the pathologic diagnosis,the cut-off point of VTQ value was determined by receiver operating characteristic curve.Results All VTQ values measured in normal glandular tissue and solid tumors of patients were with good reproducibility.The cut off point of VTQ value was determined as 6.37 m/s,sensitivity was 96.3 ％,specificity was 91.8 ％ and accuracy was 93.4 ％.Conclusions It was stable for VTQ technique appling in breast,,which is a new quantitative and helpful method in discriminating breast benign and malignant solid tumors.

ObjectiveTo study the effect of extract of fetal brain (Nerval Active Factors, NAF) on learning, memory and stamina of mice.Methods51 mice were divided into five groups randomly: normal saline as Group A, Cerebrolysin as Group B, NAF as Group C:0.1mg,Group D:0.2mg,Group E:0.4mg, i.p.The time looking for food and error frequency of walking road were tested by using complicated maze, and the drowning time was tested when the mice carried 5% body weight on its back.ResultsBefore and after treatment,the time looking for food in maze showed no significant change in Group A(P>0.1) and was significantly shorter in Group B, C, D and E(P<0.005,P<0.05,P<0.001,P<0.001).There was no significant difference on error frequency of walking road in Group A and B(P>0.2,P>0.5) before and after treatment, while it was significantly decreased in mice of Group C, D and E(P<0.02,P<0.02,P<0.01).There was significant difference on drowned time of mice carrying 5% body weight on back in five groups by analysis of variance (P<0.05) after treatment, but this difference derived from C vs E(P<0.05)and D vs E(P<0.01).Conclusions NAF can raise the activity of learning and memory of mice, as well as increase their stamina. On the other hand, the stamina of mice decreases when NAF is given more than 20 mg/kg body weight.

Objective To identify anal canal structures by dual plane transrectal ultrasound. Methods One anorectal specimen was observed by ultrasonography when needles were placed in different anal muscle layers respectively. Fifty patients with no anorectal or perianal diseases were examined by transrectal ultrasound to verify the sonographic features of anal canal, meanwhile the inner and outer sphincters and longitudinal combination muscle were measured. The ultrasound images of anal canal were compared with MR images. Fifty patients were divided into three groups according to the age: 25- 40 years old, 41 -55 years old,and ＞55 years old. Results The sonographic features of anal canal structures by transrectal ultrasound were identified. Anal canal sonographic images and MR images had consistency. The thickness of inner sphincter in each group was (0.19 ± 0.03)cm, (0.22 ± 0.02)cm, (0.24 ± 0.03)cm respectively,while outer sphincter (0.44 ± 0.03)cm, (0.49 ± 0.04)cm, (0.52 ± 0.04)cm, and longitudinal combination muscle (0.10±0.02)cm,(0.11 ± 0.02)cm,(0.11 ± 0.02)cm. Conclusions Transrectal ultrasound is a simple,efficient and non-invasive method to examine anal canal which can identify anal canal structures clearly.

Objective:To investigate therapeutic mechanism of immunoglobulin Yolk (IgY) against tumour necrosis factor alpha ( TNF-α) and interleukin-1 beta ( IL-1β) in guinea pigs with allergic rhinitis.Methods: Hartley guinea pigs were randomly divided into the control group (group C,n=17),the allergic rhinitis model group (group M,n=27),the 0.1%anti-TNF-αand IL-1βIgY treating group (group Z1,n=21) and the fluticasone propionate treating group (group Z2,n=21).The allergic rhinitis model in guinea pigs was established using ovalbumin.After treatment for 2 h,4 h,8 h,nose and bronchial lung were lavaged using 0.9%saline, the nasal lavage fluid (NLF) and bronchoalveolar lavage fluid (BALF) were collected,the precipitated cells were stained using Wright′s,the nasal mucosa and lung tissues were stained using methylene blue and eosin (HE),and TNF-α,IL-1β,IL-5 and IL-33 in nasal mucosa and lung tissues were stained using immunohistochemistry.Results:There were a large amount of eosinophils and more serious inflammation responses in nasal mucosa in the M group compared with the Z 1 and Z2 groups.In the lung tissues,there were more alveolar tube damage ,pulmonary interstitial edema ,interval thickening ,thickening of bronchial smooth muscle and inflammation cell in-filtration in the M group compared with the Z 1 and Z2 groups.The eosinophils ,lymphocytes and neutrophils were significantly decreased in NLF and BALF in the Z1 and Z2 groups compared with the M group (P<0.05).The expressions of IL-1βand TNF-αfrom 2 h to 8 h and IL-5 and IL-33 from 4 h to 8 h significantly decreased in the nasal mucosa and lung tissues in the Z 1 group compared with the M group ( P<0.05 ).Conclusion:The allergic rhinitis in guinea pigs accompany with the allergic asthma.The inhibitory capacity of anti-TNF-αand IL-1βIgY on pathological responses in guinea pigs with allergic rhinitis may be due to the significant decrease in the infiltration of eosinophils and the expressions of inflammatory cytokines in the nasal mucosas and lung tissues .

Objective To study the correlation between the renin-angiotensin-aldosterone system angiotensinogen (AGT) gene M235T,angiotensin Ⅱ type 1 receptor (AGTR1) gene Al166C,aldosterone synthase (CYP11B2) gene -344C/T polymorphisms and large-artery atherosclerotic (LAA) stroke in a southern Chinese Han population.Methods Polymerase chain reaction and gene sequencing technology were used for the genotyping in patients with LAA and normal controls with AGT gene M235T,AGTR1 gene A1166C,and CYP11B2 gene - 344C/T polymorphisms in a southern Chinese Han population,and to determine the correlation between the 3 gene polymorphisms and LAA by binary logistic regression analysis.Results A total of 107 patients with LAA and 142 healthy controls were included in the study.The frequencies of the AGT gene 253TT genotype (66.36％ vs.50.70％,x2 =6.122,P =0.047) and T allele (79.44％ vs.70.07％ ％,x2 =5.581,P =0.018) in the LAA group were significantly higher than those in the control group.The frequencies of the AGTR1 gene 1166CC genotype (0％ vs.0％,x2 =1.494,P =0.222) and C allele (7.48％ vs.4.93％,x2 =1.399,P =0.237) in the LAA group were no significantly differences with those in the control group.The frequencies of the CYP11B2 gene - 344CC genotype (9.35％ vs.4.23％,x2 =3.603,P =0.165) and C allele (27.10％ vs.26.06％,x2 =0.069,P =0.793) in the LAA group were no significant differences with those in the control group.Binary logistic regression analysis showed that there was no significant correlation between the three gene polymorphisms and the simple LAA diseases.The frequencies of AGT gene 235TT genotype (68.00％ vs.41.90％,x2 =12.446,P =0.002) and T allele (79.33％ vs.64.76％,x2 =8.993,P =0.003) in the LAA patients complicated with hypertension were significantly higher than those in the normotensive control group.Logistic regression analysis showed that the odds ratio (OR) exposed to TT genotype was 2.153 (95％ confidence interval [CI] 0.789-5.872).The OR of T allele was 2.089 (95％ CI 1.285-3.396).Conclusions The AGT gene M235T polymorphism is not associated with the simple LAA in the southern Chinese Han population,but it may be associated with the risk of LAA complicated with hypertension;CYP11B2 gene -344C/T polymorphism and AGTR1 gene A1166C polymorphism are not associated with the onset of LAA in the southern Chinese Han population.

Objective To investigate the correlation between the glial fibrillary acidic protein(GFAP),neuron-specific enolase(NSE),synaptoghysin (SYN),neurite outgrowth inhibitor-A(Nogo-A)expression and neurological outcome in tissue surrounding the infarct during the recovery after cerebral ischemia-reperfusion injury in rats.Methods A 2-hour middle cerebral artery occlusion(MCAO)and reperfusion model in rats was induced by the intraluminal suture method.The modified neurological severity score(mNSS)was performed at day 28,35,42,and 49.Immunohistochemistry was used to detect the expressions of GFAP,NSE,SYN,and Noga-A in tissue surrounding the infarct.Results The mNSS score decreased gradually over time after cerdnal ischemia-reperfusion injury in rats.Except day 35(5.11±0.737)vs.day 42 (4.54±0.519),and day 42 vs.day 49(4.29±0.488),there were significant differences at all other time points(all P<0.05).The numbers of GFAP positive cells deergased gradually form day 28 to day 49,in which,the numbers of GFAP positive cells at day 42(51.00±13.59)vs.day 49(44.38±11.94) were significantly less than those at day 28(69.00±15.10)(P<0.05).There were no significant differences in the numbers of NSE positive cells at all time points,but their integrated optical density(IOD)increased gradually.There were significant differences between day 28(6 218.57±1 864.25)and day 42(9 414.00±2 491.12) or day 49(12 522.50±3 106.99),and between day 35(7 343.40±1 533.35)and day 49(all P< 0.05).There were no significant differences at all other time points.The SYN express (IOD)increased gradually.and it was significantly lower at day 49(66 503.00±12 834.61)than that at day 28(43 905.14±13 208.59)(P<0.05).The numbers of Nogo-A positive cells decreased gradually,and they were significantly less at day 49(42.13±14.45) than those at day 28(59.57±15.25)(P<0.05).The GFAP expression was positively correlated with the mNSS scores(r=0.993,P=0.007).The NSE(r=-0.954,P=0.044)and SYN(r=-0.992,P=0.008) expression was negatively correlated with the mNSS scores.Conclusion The neurological outcome was associated with the downregulation of GFAP expression and the upregalation of NSE and SYN expression during the recovery after cerebral ischemia-reperfusion injury in rats.

Objective To compare the prognosis of vascular in situ and bridge vessel percutaneous coronary intervention ( PCI) therapy strategies in patients with recurrent angina after coronary artery bypass grafting ( CABG) . Methods A total of one hundred and two patients with recurrent angina after CABG from January 2008 to January 2016 were involved in this study and were divided into two groups according to interventional therapy strategy:74 patients in the vascular in situ PCI group ( in situ group,74 cases) and 28 patients for bridge vessel PCI group ( bridge vessel group,28 cases) . The patients have been followed up for (33. 6± 10. 2) months. The major adverse cardiovascular events ( MACE) of the two groups were recorded, including non?fatal acute myocardial infarction ( AMI) ,target vessel revascularization ( TVR) and cardiac death, and multivariate logistic regression analysis was used to analyze the related factors of MACE. Results Compared with the bridge vessel group,the non?MACE survival rate,non?AMI survival rate and non?TVR survival rate of the in situ group were significantly increased ( ( 71. 6% ( 53/74 ) vs. 57. 1% ( 16/28 ) , 93. 2% ( 69/74 ) vs. 82. 1% (23/28),81. 1% (60/74) vs. 67. 9% (19/28) ),the differences were statistically significant (χ2=8. 141,4. 219,5. 436, P<0. 05) . Multivariable logistic regression analysis showed that age of bridge ( OR=1. 023,95%CI 1. 005-1. 026,P=0. 019) ,diabetes mellitus ( OR=2. 386,95%CI 1. 425-3. 991,P=0. 003) and bridge vessel PCI (OR=1. 884,95%CI 1. 093-3. 220,P=0. 025) were factors that affect the clinical prognosis in patients with recurrent angina pectoris after CABG. Conclusion The clinical prognosis of the in situ PCI is better than bridge vascular PCI in patients with recurrent angina after CABG,while the age of bridge, diabetes mellitus, vascular interventional treatment are factors for the effect of interventional therapy patients prognosis. The clinical prognosis is much better in native vessel PCI than that of bridge vessel PCI in patients with recurrent angina after CABG. The age of bridge,diabetes mellitus and bridge vessel PCI are the factors that affect the clinical prognosis in the patients.

Objective:To investigate the role of coupler perfusion in transrectal ultrasound in the diagnosis of preoperative T staging of rectal cancer.Methods:A retrospective analysis of the preoperative clinical data of 132 patients with rectal cancer in the People′s Hospital of Inner Mongolia Autonomous Region from June 2015 to November 2020. According to whether or not the patients agreed to coupler perfusion before ultrasound examination, they were divided into 2 groups, namely the perfusion group 69 cases and the non-perfusion group of 63 cases, with postoperative pathology as the gold standard, and compared with magnetic resonance imaging(MRI) to evaluate the accuracy of the 2 groups and MRI in the T staging of rectal cancer.Results:The total coincidence rates of the coupling agent perfusion group, non-perfusion group and MRI group for the diagnosis of rectal cancer T staging were 89.9%, 76.2% and 87.9%, respectively, and the difference among the three methods was statistically significant (χ 2=6.096, P=0.047). The diagnostic sensitivity of the coupling agent perfusion group for T1 stage was 96.0%, which was higher than 61.5% of the non-perfusion group and 92.3% of the MRI ( P=0.010). The specificity of the perfusion group for the diagnosis of T2 stage was 95.7%, higher than the non-perfusion group and MRI ( P=0.037), the positive predictive value of the perfusion group for T2 stage was 90.9%, which was higher than the non-perfusion group and MRI ( P=0.035). The diagnostic accuracy of the perfusion group for T2 stage was 94.2%, higher than the non-perfusion group and MRI (χ 2=7.070, P=0.029). There were no statistically significant differences in diagnostic sensitivity, specificity, positive predictive value, negative predictive value and accuracy among the perfusion group and the non-perfusion group and the MRI for T3 and T4 (all P>0.05). Conclusions:Coupled-agent perfusion makes it convenient and fast for intracavity ultrasound to diagnose T staging of rectal cancer, and the diagnostic efficiency is comparable to MRI. In particular, it can be used as a highly reliable imaging method for T1 and T2 rectal cancer.