Effect of shear wave elastography in predicting pathological responses to neoadjuvant chemotherapy in patients with breast cancer / 中华超声影像学杂志

Objective:To investigate the clinical value of shear wave elastography (SWE) in predicting pathological responses to neoadjuvant chemotherapy in breast cancer.Methods:According to the postoperative pathological responses, 56 patients who received neoadjuvant chemotherapy followed by surgical excision in the Fujian Cancer Hospital from August 2019 to September 2020 were divided into responders and non-responders. The relative change rates of tumor maximum diameter(ΔD2, ΔD4) and SWE stiffness (ΔEmax2, ΔEmax4, ΔEmean2, ΔEmean4) were assessed before NAC and after different NAC cycles (t2, t4). Clinical information, including age, T, N stages, ER, PR, HER2, Ki67, and molecular subtype were also considered as the variables. The independent influencing factors of pathological responses after neoadjuvant chemotherapy were obtained by logistic regression analysis and diagnostic test was carried out.Results:There were 23 cases as responders (41.0%, 23/56), and 33 cases as non-responders (58.9%, 33/56). Results of multivariate analysis showed ΔEmax4 and HER2 index were independent influencing factors of pathological responses ( OR=1.11, P<0.001; OR=31.81, P=0.002). Area under curve of the ΔEmax4 (AUC: 0.869, 95% CI: 0.746-0.941) was higher than that of HER2 (AUC: 0.690, 95% CI: 0.545-0.834). The combination of ΔEmax4 and HER2 gave the best prediction of pathological responses (AUC 0.930, 95% CI: 0.829-0.981). the sensitivity, specificity, diagnostic accuracy, postive predictive value, and negative predictive value were 78.26%, 96.97%, 75.23%, 94.73%, and 86.49%, respectively. Conclusions:ΔEmax4 and HER2 are independent predictors of pathological responses after neoadjuvant chemotherapy for breast cancer. Combined ΔEmax4 and HER2 can improve the predictive diagnostic efficacy of pathological responses to chemotherapy for breast cancer.

Effects of low resistance training using elastic band on lower extremity functional and health-related quality of life in elderly with degenerative knee arthritis / 中国实用护理杂志

Objective Understand the effects of low-resistance elastic band exercise on lower limb function and health-related quality of life in elderly with degenerative knee arthritis. Methods The 79 patients with degenerative knee arthritis were randomly divided into observation group (40 cases) and control group (39 cases). In the observation group, low-resistance elastic bands were exercised for 12 weeks and 2 times per week. In the control group, routine care measures. The following limb function assessment scales and health-related quality of life scales were evaluation tools, and statistical analysis was performed based on the measured data. Results There was no significant difference in the score of gait balance, isotonic contraction, knee muscle strength of lower extremity function before intervention between the two groups(P>0.05). The score of gait balance, isotonic contraction, knee muscle strength of lower extremity function after intervention was(4.63 ± 0.07),(4.57 ± 0.08),(4.53 ± 0.44)points in the observation group, and(3.60±0.23),(3.59±0.12),(3.86±0.09)points in the control group, and there was significant difference between the two groups(t=1.982, 1.968, 2.356, all P<0.05). There was no significant difference in the score of joint activities, body function, social interaction, emotional state, mental health of quality of life before intervention between the two groups(P>0.05). The score of joint activities, body function, social interaction, emotional state, mental health of quality of life after intervention was(4.48± 0.12),(4.57±0.22),(4.38±0.57),(4.29±0.29),(4.33±0.41)points in the observation group, and(3.46± 0.52),(3.48±0.25),(3.59±0.97),(3.45±0.83),(3.51±0.52)points in the control group, and there was significant difference between the two groups(t=2.405-3.564, all P<0.01). Conclusions For elderly, low-resistance elastic band exercise is easy to learn in operation, safety and practicality are also higher, as a reference to improve the lower limb function and health-related quality of life in elderly patients with degenerative knee.

Effects of low resistance training using elastic band on lower extremity functional and health-related quality of life in elderly with degenerative knee arthritis / 中国实用护理杂志

Objective@#Understand the effects of low-resistance elastic band exercise on lower limb function and health-related quality of life in elderly with degenerative knee arthritis.@*Methods@#The 79 patients with degenerative knee arthritis were randomly divided into observation group (40 cases) and control group (39 cases). In the observation group, low-resistance elastic bands were exercised for 12 weeks and 2 times per week. In the control group, routine care measures. The following limb function assessment scales and health-related quality of life scales were evaluation tools, and statistical analysis was performed based on the measured data.@*Results@#There was no significant difference in the score of gait balance, isotonic contraction, knee muscle strength of lower extremity function before intervention between the two groups (P>0.05) . The score of gait balance, isotonic contraction, knee muscle strength of lower extremity function after intervention was (4.63±0.07) , (4.57±0.08) , (4.53±0.44) points in the observation group, and (3.60±0.23) , (3.59±0.12) , (3.86±0.09) points in the control group, and there was significant difference between the two groups(t=1.982, 1.968, 2.356, all P<0.05). There was no significant difference in the score of joint activities, body function, social interaction, emotional state, mental health of quality of life before intervention between the two groups (P>0.05) . The score of joint activities, body function, social interaction, emotional state, mental health of quality of life after intervention was (4.48±0.12) , (4.57±0.22) , (4.38±0.57) , (4.29±0.29) , (4.33±0.41) points in the observation group, and (3.46±0.52) , (3.48±0.25) , (3.59±0.97) , (3.45±0.83) , (3.51±0.52) points in the control group, and there was significant difference between the two groups (t=2.405-3.564, all P<0.01) .@*Conclusions@#For elderly, low-resistance elastic band exercise is easy to learn in operation, safety and practicality are also higher, as a reference to improve the lower limb function and health-related quality of life in elderly patients with degenerative knee.

The development and assessment of Knee Osteoarthritis Self-Care Questionnaire for Elderly / 中国实用护理杂志

Objective To develop Knee Osteoarthritis Self-Care Questionnaire for Elderly (KOSCQE), and test reliability and validity of the scale. Methods Based on self care theory, with reference to International Knee Documentation Committee Subjective Knee Form, combined with literature analysis and through semi-structured interviews, the item pool of the scale was established. A total of 148 elderly were investigated by questionnaire survey. Results KOSCQE extracted 5 common factors with 26 items, and the total variance contribution rate was 68.972%;the item load factor was 0.576 to 1.872, item level content validity index was 0.901-0.928, factor in overall content validity index of 0.916;total Cronbach αcoefficient was 0.898, test-retest reliability was 0.864, and the confirmatory factor analysis showed that:χ2/df=1.09, goodness of fit index =0.942, root mean square error of approximation=0.020, adjusted goodness of fit index=0.964, normed fit index=0.960, comparative fit index=0.948, relative fit index=0.931, incremental fit index=0.918, parsimony goodness of fit index=0.891. Conclusions The reliability and validity of the KOSCQE of the elderly accord with the requirements of the measurement of the scale, it can improve the elderly's awareness of self care and quality of life of the knee osteoarthritis.

An association analysis on rs1412125 at HMGB1 with atrial fibrillation / 实用医学杂志

Objective To investigate the association of rs1412125 at high-mobility group box 1 (HMGB1) gene with atrial fibrillation (AF) in Chinese Han population. Methods 396 patients with AF and 726 control subjects were recruited to this study. A case-control association analysis was applied to assess the as-sociation between rs1412125 in HMGB1 and AF. Results There were no significant differences in rs1412125 and the frequency of genotype distribution between the study group and the control group (allelic association:object P value was 1.05E-06, adjust P value was 0.176; genotypic association: additive P value was 0.146, dominant P value was 0.162, and recessive P value was 0.998). The interactions analysis showed that rs1412125 allele C increased the risk of AF in male subjects with rheumatic heart disease (adjust P value was 2.07E-04, rectify OR = 8.20, and 95%CI: 2.70-25.0). Conclusions There is no independent genetic association between rs1412125 at HMGB1 and atrial fibrillation. However , the interactions between rs1412125 and both gender and rheumatic heart disease might increase the risk of atrial fibrillation.

Expression of the thermostable carboxypeptidase Taq gene in Pichia pastoris GS115 / 生物工程学报

To express recombinant carboxypeptidase from Thermus aquaticus (Cpase Taq) in Pichia pastosis, the open reading frame coding thermostable Cpase Taq was optimized based on the preference of P. pastoris codon usage and synthesized in vitro. The novel gene was cloned into P. pastoris expression vector pHBM905A and the sequence coding 6xHis tag was fused with the ORF of Cpase Taq gene. The recombinant plasmid was named pHBM905A-Cpase Taq and transformed into P. pastoris GS 115. Transformants were induced with 1% methanol for 72 h until the enzyme yield reached 0.1 mg/ml. The enzyme was purified and its enzymatic properties were analyzed. The results showed that the specific enzyme activity reached maximum at 75 °C and pH 7.5, which was about 80 U/mg. It was the first report about the secretory expression of Cpase Taq in P. pastoris GS115. Because of its large-scale preparation, this enzyme may be applied in industrial hydrolysis of peptides into amino acids in the future.

Optimization research on preparation conditions of polymer-shelled microbubble contrast agents / 中国组织工程研究

BACKGROUND:In previous experiments, a polymer-shel ed microbubble contrast agent was successful y prepared using L-polylactic acid-polyethylene glycol methyl-covered liquid fluorocarbon perfluoropentane, which developed wel in vivo and in vitro under a second harmonic contrast-enhanced ultrasound with a low mechanical index OBJECTIVE:To optimize the conditions for preparing polymer-shel ed microbubble contrast agents with high yield and suitable size. METHODS:The polymer-shel ed microbubble contrast agent containing perfluoropentane was prepared by single emulsion method. Three preparation conditions, including polymer mass/perfluoropentane volume ratio (4/1, 2/1, 1/1, 1/2), hemogenate speed (18 000, 26 000, 35 000 r/min) and time (15, 30, 60, 120 seconds), were optimized, and the microbubble yield and size were set as judge standard. The contrast-enhanced ultrasonography of rabbit kidney was performed using the optimized microbubbles, and the arrival time, time to peak, half time of descending and peak intensity were analyzed by TCA software. RESULTS AND CONCLUSION:The preparation conditions were optimized as a polymer mass/perfluoropentane volume ratio of 2/1, homogenate speed of 26 000 r/min and homogenate time of 60 seconds, which presented a high microbubble yield of (1.8±0.4)×109/mL and mean size of (3.7±1.3)μm with uniform distribution. The arrival time, time to peak, half time of descending and peak intensity were detected as (3.1±0.6) seconds, (2.9±0.5) seconds, (4.0±0.7) seconds and (4.7±1.1)×10-5 AU, respectively. The polymeric microbubbles prepared by optimized conditions were of high yield, with suitable size and good contrast-enhanced effect in vivo.

Application of ultrasonography in diagnosing and preoperative TNM staging for invasive micropapillary carcinoma of breast / 中华超声影像学杂志

Objective To investigate the ultrasonic characteristics of invasive micropapillary carcinoma(IMPC) of breast and the metastatic lymph nodes,and to evaluate the value of ultrasonography for preoperative TNM staging.Methods The ultrasonic characteristics of 16 IMPC and 81 invasive ductal carcinoma (IDC) confirmed by pathology,as well as the metastatic lymph nodes were analyzed retrospectively.The TNM-staging for IMPC by preoperative ultrasonography was evaluated according to pathology.Results Compared with IDC group,the masses showed higher A/T ratio (＜ 0.7),larger maximum diameter,more calcification,unclear border and lymph node metastasis rate,while less acoustic halo in IMPC group.Meanwhile,similar ultrasonic characteristics,such as irregular shape,uneven internal echo,spiculate margin,posterior acoustic attenuation and internal blood flow were seen in IMPC and IDC groups (P ＞0.05).According to pathology,the ultrasonic coincidence rate for T staging was 56.3 ％,and T2-staging was 85.7％.The sensitivity,specificity,positive predictive value and negative predictive value of ultrasonic diagnosis on lymph node metastases was 70.0％,83.3％,87.5％ and 62.5％,respectively.Conclusions Ultrasonography displayed more typical malignant signs,higher lymph node metastasis rate and diagnosis accuracy for IMPC,which possessed certain value for preoperative TNM staging.

Deferoxamine pretreatment for hepatic ischemia reperfusion injury in liver auto-transplantation in rats / 中华普通外科杂志

Objective To investigate the role of deferoxamine pretreatment for hepatic ischemia reperfusion injury in liver auto-transplantation in rats. Method Murine liver auto-transplantation model was established. Ninety six male Sprague-Dawley rats were randomly divided into three groups: 32 rats in deferoxamine pretreatment group (D), 32 rats in control group with aqua pro injection pretreatment(C) and 32 rats in sham-operation group (S). The animals were killed at 30 min, 2 h, 6 h, 24 h after operation respectively. ALT and AST level, superoxide dismutase (SOD) and malondialdehyde (MDA), liver histological change(HE), the protein expression of HIF-1α、TNF-α and IL-1 were measured. Results At 30 min, 2 h, 6 h, 24 h after operation, the levels of ALT,AST,MDA and the expression of IL-1 protein and TNF-α protein were higher in group C than group D significantly,while the expression of HIF-1α and SOD were higher in group D [SOD(411±70; 384±53; 379±46)、H1F-1α(0.0413±0.0040; 0.0684± 0.0032; 0.0583±0.0032; 0.0491±0.0026)] than group C significantly (P<0.01) [SOD(341±21; 323±25; 303±25)、HIF-1α (0.0254±0.0024; 0.0312±0.0022; 0.0381±0.0022; 0.0257± 0.0015)] (F>59.881;P<0.01). Conclusion The up-regulated expression of HIF-1α, decreased liver lipid peroxidation injury and TNF-α and IL-1 levels, may be involved in the mechanism hy which deferoxamine pretreatment protects liver from ischemia reperfusion injury in rats' liver auto-transplantation.

Liver transplantation for fulminant liver failure / 中华消化外科杂志

fulminant liver failure(FLF)is a rapid onset life-threatening emerency in which liver dysfunction,liver failure and hepatic encephalopathy occur within 8 weeks in previouslv norillal person.It has been confirmed by available clinical experience and literatures during the past decades that FLF patients are ideal recipients of liver transplantation.However,the prognosis of the FLF patients who accepted liver transplantation differed greatly according to the available reports because of the differences of supportive treatment during waiting period,the criterion for recipient assessment,the determination of operation chance,the use of critical techniques during operation and postoperative management between different transplantation centers.We probe the standardized clinical use of the aspects above mentioned in liver transplantation for FLF,particularly discuss the treatment of complications resulting from coagulopathy,determination of operation chance,significance of standardized etiological treatment and the indication of the use of veno-venous bypass technique during transplantation to provide better treatment strategy and improve the prognosis of FLF patients.

Molecular adsorbent recycling system for acute liver failure patients / 中华普通外科杂志

Objective To study molecular adsorbent recycling system (MARS) in the treatment of patients with acute liver failure waiting for liver transplantation. Methods The effects of MARS artificial liver treatments in 16 cases were reviewed. Results There was a remarkable improvement in clinical symptoms and physical signs after MARS treatment, including significant decrease in prothrombin time, total bile acid, level of alanine aminotransferase, aspartate aminotransferase, creatinine, and blood ammonia (P＜0.05＝;There was no statistical change in NO,TNF-α and IL-10(P＞0.05).Sequential organ failure assessment(SOFA)score decreased from 9.91±1.09 to 6.64±1.76 and Glascow coma score increased from 7.29±2.06 to 13.26±2.14.Fourteen patients were tided over to liver transplantation among them 13 patients survived and were successfully discharged from the hospital. The survival rate was 89.5%.Conclusion MARS is a safe and effective assistant device in bridging acute liver failure patients to liver transplantation.

Clinical analysis on the main early postoperative complications of pancreatoduodenectomy / 中国普通外科杂志

Objective To summarize the main early complications after pancreatoduodenectomy and analysis of the probable causes.Methods The clinical data of 576 cases who underwent pancreatoduodenectomy(PD) in our department between Feb 1990 and May 2009 were analysed retrospectively.Results There were 92 early postoperative complications occurred in 85 patients(14.8%).Gastrointestinal dysfunction,pancreatic leakage,intra-abdominal infections and hemorrhage were the most of complications,and 7 cases died during perioperative period(mortality 1.22%),among which 3 died of multiple system organ failure,2 died of hemorrhagic shock and 2 died of toxic shock.Preoperative hypoproteinemia and hyperbilirubinemia complicated with a high incidence of postoperative complications on multivariate analysis.Conclusions Meticulous preoperative preparation,delicate intraoperative technigne and close postoperative observation are the key points to decrease early complications and improve the prognosis of the patients who undergo PD.

Determination of 2, 3, 5, 4′-stilbene glucoside in Xuezhiping Capsules by HPLC / 中药新药与临床药理

Objective To determinate the content of 2, 3, 5, 4′-stibene glucoside in Xuezhiping Capsules. Method HPLC was performed with Diamosil~(TM)C_(18) column, a mobile phase of acetonitrile-water (20: 80), the detection wavelength at 320nm and the flow rate being 1.0 mL/mL. Results 2, 3, 5, 4′-stilbene glucoside has a good linear within 0.0267～2.6640 ?g and the average recovery was 99.62% with RSD 1.32%. Conclusion This method is convenient and efficient and can be used for the quality control of Xuezhiping Capsules.