OBJECTIVE:To establish a method for the simultaneous determination of chlorogenic acid,paeoniflorin,ferulic ac-id,berberine hydrochloride and baicalin in Lianqiao baidu pill. METHODS:HPLC was performed on the column of Agilent Eclipse XDB-C18 with mobile phase of 0.5% phosphoric acid(triethylamine adjusted to pH 3.0)-methanol(gradient elution)at a flow rate of 1.0 ml/min,the column temperature was 30 ℃,the detection wavelength was 230 nm(for paeoniflorin and berberine hydrochlo-ride),324 nm(for chlorogenic acid and ferulic acid)and 278 nm(for baicalin),and the injection volume was 5 μl. RESULTS:The linear range was 1.884-30.144 μg/ml for chlorogenic acid(r=0.999 9),0.392-6.272 μg/ml for paeoniflorin(r=0.999 7), 0.102-1.632 μg/ml for ferulic acid(r=0.999 7),1.326-21.216 μg/ml for berberine hydrochloride(r=0.999 8) and 1.95-31.2 μg/ml for baicalin(r=0.999 9),respectively;RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 99.58%-102.47%(RSD=0.93%,n=9),99.21%-102.18%(RSD=0.90%,n=9),98.28%-101.23%(RSD=0.86%,n=9), 99.66%-101.84%(RSD=0.82%,n=9)and 99.18%-101.05%(RSD=0.62%,n=9). CONCLUSIONS:The method is accurate,re-liable,simple and fast,and can be used for the simultaneous determination of chlorogenic acid,paeoniflorin,ferulic acid,berber-ine hydrochloride and baicalin Lianqiao baidu pill.

Objective To study the effect of self-modified Guth & Samaha's myosin-ATPase staining method on the classification of SD rat skeletal muscle fiber types.Methods 8 ?m-thick cryostat sections from rat chest muscles and biceps brachii muscles were transfected with cryostat.Myosin-ATPase staining was carried out according to the following procedure: ① Fixing sections for 5 min in fixative solution containing 40 g/L paraformaldehyde;② Rinsing slides in Tris-rinse solution and then preincubating them in alkaline preincubation solution for 15 min;③ Rinsing slides in Tris-rinse solution twice and then incubating them for 60 min in incubation solution;④ Washing slides for three times in 10 g/L CaCl2 and then placing them in 20 g/L CoCl2 for 3 min;⑤ Washing sides in distal water and then placing them in 10 g/L(NH4)2S for 3 min and;⑥ Washing slides in running tap water for 3 min,dehydrating in graded ethanol,clearing in xylene and mounting in neutral balsam.Results After being stained by modified myosin-ATPase staining method,both chest muscle and biceps brachii muscle samples from SD rats could be clearly identified as type Ⅰ fibers and type Ⅱfibers as the fibers of type Ⅰ were stained white while the fibers of type Ⅱ were stained brown.Conclusion Modified myosin-ATPase staining method is a simple and effective way for muscle fiber type classification and can be applied in skeletal muscle related study.

OBJECTIVE:To establish a method for the contents determination of tanshinol,protocatechuic aldehyde,ferulic ac-id and salvianolic acid B in Yixinshu capsule. METHODS:Dual-wavelength HPLC was performed on the column of Eclipse XDB-C18 with mobile phase of 0.5%phosphoric acid-methanol-acetonitrile(gradient elution)at the flow rate of 1.0 ml/min,the de-tection wavelength was 280 nm(tanshinol,protocatechuic aldehyde,salvianolic acid B)and 320 nm(ferulic acid),column tempera-ture was 30℃and volume was 10 μl. RESULTS:The linear range of tanshinol,protocatechuic aldehyde,ferulic acid and salvianolic acid B were respectively 9-144μg/ml(r=0.999 9),0.5-8μg/ml(r=0.999 9),0.65-10.4μg/ml(r=0.999 9)and 221.25-3 540μg/ml (r=0.999 9);RSDs of precision,stability and reproducibility tests were no more than 1.90%;the average recovery was respective-ly 100.8%(RSD=1.65%,n=9),100.1%(RSD=2.87%,n=9),100.1%(RSD=3.01%,n=9) and 99.4%(RSD=2.05%,n=9). CONCLUSIONS:The method is simple and reproducible,and can be used for the quality control of Yixinshu capsule.

To observe the role of parathyroid hormone PTH( 1 - 84) and platelet cytosolic free calcium I pt[ Ca2 + ] i in regulation of blood pressure on hemodialysis (HD) patients. Methods Fura-2 fluorometry and immunoradioassy werw used to detect PTH(1 - 84) and pttCa2+ ]i in 24 HD patients. Results The resting pt[Ca?+ ]i and PTH(1 - 84) increased in HD cases, and they were significantly higher in uremic patients with hypertension than ones without hypertension. The resting pt[Ca2+ ]i was correlated to PTH( 1 - 84) in HD cases. The multivariate stepwise regression analysis showed the PTH( 1 - 84) and pt[Ca2 + ]i are probably mains factors to affect the blood pressure in HD cases. Conclusion PTH(l - 84) and pt[Ca2+ ji are main factors affecting the blood pressure in uremic patients.

OBJECTIVE:To establish a method for the content determination of tanshinol,protocatechuic aldehyde,salvianolic acid B,paeoniflorin and ferulic acid in Xinning tablets. METHODS:Multi-target with multi-wavelength HPLC was performed on the column of Agilent Zorbax Eclipse XDB-C18 with the mobile phase of acetonitrile-methanol-0.5% H3PO4 aqueous solution(gradi-ent elution) at the flow rate of 1.0 ml/min. The column temperature was 30 ℃,volume was 10 μl and the detection wavelength was 280 nm for tanshinol,protocatechuic aldehyde and salvianolic acid B,230 nm for paeoniflorin and 320 nm for ferulic acid. RESULTS:The linear range was 66.25-1060.00 μg/ml for tanshinol(r=0.999 9),5.55-88.86 μg/ml for protocatechuic aldehyde (r=0.999 9),187.20-2 995.20 μg/ml for salvianolic acid B(r=0.999 7),23.71-379.39 μg/ml for paeoniflorin(r=0.999 9)and 0.20-3.12μg/ml for ferulic acid(r=0.999 7);the RSDs of precision,stability and repeatability tests were all less than 2%;the av-erage recoveries were respectively 98.85%(RSD=0.12%,n=6),97.95%(RSD=0.19%,n=6),99.18%(RSD=0.37%,n=6), 98.14%(RSD=0.25%,n=6) and 97.16%(RSD=1.36%,n=6). CONCLUSIONS:The method is simple and convenient with good separation effect,and can be used for the content determination of the 5 components in Xinning tablets.

OBJECTIVE:To establish a method for simultaneous determination of tanshinol,protocatechuic aldehyde,paeoni-florin,ferulic acid and salvianolic acid B in Shenshao oral liquid. METHODS:RP-HPLC was performed on the column of Eclipse XDB C18 with mobile phase of 0.5%phosphoric acid-methanol-acetonitrile(gradient elution)at the flow rate of 1.0 ml/min,the de-tection wavelength was 280,230 and 320 nm,column temperature was 30 ℃ and volume was 10 μl. RESULTS:Under the chro-matographic conditions,5 kinds of components could be completely separated,the linear range of tanshinol,protocatechuic alde-hyde,paeoniflorin,ferulic acid and salvianolic acid B were respectively 24-384 μg/ml(r=0.999 9),1.25-20 μg/ml(r=0.999 9), 40.5-648 μg/ml(r=0.999 8),1.5-24 μg/ml(r=0.999 9),145-2 320 μg/ml(r=0.999 9);RSDs of precision,stability and reproduc-ibility tests were no more than 2.2%;the average recovery was respectively 100.7%(RSD=1.23%,n=9),100.0%(RSD=2.19%,n=9),99.6%(RSD=0.87%,n=9),100.3%(RSD=1.11%,n=9) and 99.3%(RSD=2.46%,n=9). CONCLUSIONS:The method is specific with good precision and reproducibility,and can be used for the content determination of 5 components in Shenshao oral liquid.

OBJECTIVE:To establish a method for simultaneous determination of danshensu,salvianolic acid B,protocatechu-ic aldehyde,paeoniflorin and ferulic acid in Jingzhi guanxin granule. METHODS:HPLC was performed on the column of Zorbax Eclipse XDB-C18 with mobile phase of acetonitrile-methanol-0.5% H3PO4(gradient elution)at a flow rate of 1.0 ml/min,the detec-tion wavelength was 280 nm(for danshensu,protocatechuic aldehyde,salvianolic acid B),230 nm(for ferulic acid)and 320 nm (for paeoniflorin),column temperature was 30 ℃,injection volume was 10 μl. RESULTS:The linear range was 1.19-478.34 μg/ml for danshensu(r=0.999 9),0.11-44.93 μg/ml for protocatechuic aldehyde(r=0.999 9),7.49-995.20 μg/ml for salvianolic acid B (r=0.999 7),0.95-379.39 μg/ml for paeoniflorin (r=0.999 9) and 0.01-3.12 μg/ml for ferulic acid (r=0.999 5);the limits of quantitation were 1.91 ng,0.36 ng,150.00 ng,2.74 ng and 0.10 ng,limit of detection were 0.96 ng,0.10 ng,45.00 ng,1.52 ng and 0.03 ng;RSDs of precision,stability and reproducibility tests were lower than 2%;recoveries were 98.06%-99.47%(RSD=0.52%,n=6),98.01%-99.49%(RSD=0.70%,n=6),98.44%-99.45%(RSD=0.37%,n=6),96.94%-100.71%(RSD=1.27%,n=6)and 95.44%-100.44%(RSD=1.90%,n=6). CONCLUSIONS:The method is simple and accurate,and suitable for the simultaneous determination of danshensu,salvianolic acid B,protocatechuic aldehyde,paeoniflorin and ferulic acid in Jingzhi guanxin granule.

Objective:To investigate the application value of one-stitch prophylactic ileostomy in late ileostomy closure.Methods:The prospective randomized control study was conducted. The clinicopathological data of 141 patients with rectal cancer who underwent low anterior resection combined with prophylactic ileostomy in the Affiliated Tumor Hospital of Zhengzhou University from January 2016 to July 2020 were selected. There were 127 patients being selected after excluding 14 cases who did not undergo ileostomy closure. Patients undergoing one-stitch prophylactic ileostomy were divided into observation group, and patients undergoing traditional ileostomy were divided into control group. Observation indicators: (1) grouping situations of the enrolled patients; (2) surgical situations of ileostomy closure; (3) postoperative situations; (4) follow-up. Follow-up was conducted using outpatient examination and telephone interview once a month after low anterior resection combined with prophylactic ileostomy to detect complication and death of patients. The end point was at 3 months after ileostomy closure. The follow-up was up to July 2020. Measurement data with normal distribution were represented as Mean±SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( P25, P75) or M (range), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test. Comparison of ordinal data between groups was conducted using the Mann-Whitney U test. Results:(1) Grouping situations of the enrolled patients: a total of 127 patients were selected for eligibility, aged from 31 to 83 years, with a median age of 64 years. Of 127 patients, there were 66 cases in observation group and 61 cases in control group. (2) Surgical situations of ileostomy closure: all patients from the two groups underwent ileostomy closure successfully. The incision length, operation time, volume of intraoperative blood loss, cases with abdominal adhesion degree as slight adhesion or obvious adhesion were 4.25 cm(4.00 cm, 5.00 cm), 48.00 minutes(33.75 minutes, 58.00 minutes), 30 mL(20 mL, 50 mL), 34, 32 of the observation group, versus 7.50 cm(7.00 cm, 8.50 cm), 70.00 minutes(57.00 minutes, 80.00 minutes), 30 mL(30 mL, 50 mL), 13, 48 of the control group, showing significant differences between the two groups ( Z=-9.549, -6.133, -2.758, χ2=12.405, P<0.05). (3) Postoperative situations: cases with incision infection of the observation group and the control group were 5 and 13, respectively, showing a significant difference between the two groups ( χ2=4.917, P<0.05). (4) Follow-up: all the 127 patients were followed up for 6-21 months, with a median follow-up time of 10 months. During the follow-up, 3 cases of the control group had postoperative incisional hernia and were cured after conservative treatment. None of patient had anastomotic leakage related complications or died during the follow-up. Conclusion:The one-stitch preventive ileostomy has the advantage of ileostomy closure, which can reduce the operation time, volume of intraoperative blood loss and shorten the incision length effectively, so as to reduce the incidence of postoperative incision infection related complications.

Objective:To evaluate a nano-carbon lymphatic tracing method for patients with rectal cancer after neoadjuvant radiotherapy and chemotherapy .Method:Retrospective analysis was made on 88 patients of rectal cancer undergoing neoadjuvant chemoradiation at the Department of General Surgery, He′nan Cancer Hospital from Jan 2016 to May 2020.According to whether nano-carbon lymph node was used or not, patients were divided into nanocarbon tracer group (study group) and non-nanocarbon tracer group (control group).Results:There was statistically significant in the number of havested lymph nodes between the two groups [15(11-19) vs.9(5-12), Z=5.227, P<0.001], There was no statistically significant in the number of positive lymph nodes between the two groups [0(0-0.25) vs.0(0-1), Z=1.199, P=0.231]. There were significant differences in the ratio of patients with less than 7 lymph nodes(0/34 vs.18/54, χ 2=14.248, P<0.001) and patients with less than 10 lymph nodes (4/34 vs.29/54, χ 2=15.657, P<0.001). Conclusions:The injection of nanocarbon after neoadjuvant chemoradiotherapy can increase the number of harvested postoperative lymph nodes and the ratio of patients with lymph nodes ≥7 and ≥10, which is more beneficial for prediction of the prognosis of patients.

Objective:To investigate whether adjuvant chemotherapy could be beneficial for patients with pT1N1M0 (stage ⅠB) gastric cancer.Methods:From Jan 2010 to Dec 2016, 185 patients with pT1N1M0 gastric cancer who were surgically resected at Henan Cancer Hospital were retrospectively analyzed. The patients were divided into chemotherapy group ( n=100) and non chemotherapy group ( n=85). Results:For disease-free survival (DFS) analysis, univariate survival analysis showed that age, examined lymph nodes, vascular invasion, nerve invasion and adjuvant chemotherapy were associated with DFS (all P<0.05); multivariate analysis showed that lymph node resection ≥ 16 ( HR=0.363, 95% CI: 0.160-0.827, P=0.016), vascular invasion ( HR=4.117, 95% CI: 1.796-9.436, P=0.001) and postoperative chemotherapy ( HR=4.530, 95% CI: 1.932-10.622, P=0.001) were independent risk factors for DFS. For disease-specific survival (DSS) analysis, univariate survival analysis showed that lymph node resection, vascular invasion, nerve invasion and adjuvant chemotherapy were associated with DSS; multivariate analysis showed that lymph node resection ≥ 16 ( HR=0.344, 95% CI: 0.144-0.822, P=0.016), vascular invasion ( HR=5.113, 95% CI: 2.029-12.887, P=0.001) and postoperative chemotherapy ( HR=4.694, 95% CI: 1.854-11.888, P=0.001)were independent risk factors for DSS. According to examined lymph nodes and vascular invasion , pT1N1M0 patients were divided into three risk categories (high, medium and low). DFS and DSS were significantly different among the three risk groups (all P<0.001, respectively). Conclusion:pT1N1M0 gastric cancer patients are expected to benefit from adjuvant chemotherapy. Patients with less than 16 lymph nodes and vascular invasion may be particularly suitable for adjuvant chemotherapy.