The impact of obstructive sleep apnea hypopnea syndrome on the perioperative and long-term outcome in patients with Stanford type A aortic dissection / 中华耳鼻咽喉头颈外科杂志

Objective: To confirm the impact of obstructive sleep apnea hypopnea syndrome (OSAHS) on perioperative and long-term outcome in patients with Stanford type A aortic dissection. Methods: From June 2010 to July 2017, the clinical data of 91 patients with Stanford type A aortic dissection were analyzed. Among them, 51 patients with OSAHS were included in the study group and 40 patients without OSAHS were included in the control group. After 36 months follow-up, all-cause death was regarded as the end event. The clinical baseline data, perioperative period and 36 months survival rate of the two groups were compared. Kanplan-Meier method was used to describe the 36 month survival curve of the two groups. Cox proportional risk model was used to evaluate the risk ratio (HR) and 95%CI of 36 month survival rate. Results: The mortality rate during hospitalization was 5.9% (3 cases) in the study group and 5.0% (2 cases) in the control group, and the difference was not statistically significant (χ~2=0.03, P>0.05). The actual follow-up was (36.2±1.5) months, 88 cases were followed up and 3 cases were lost. The all cause mortality rate of 36 months was 27.5% (14/51)in the study group and 10.0%(4/40) in the control group, the difference was statistically significant (χ~2=4.30, P<0.05).By Cox proportional risk model analysis, 36 months after operation, the study group was compared with the control group after adjusting for age, male, bicuspid of aortic valve, chronic obstructive pulmonary disease, anemia, preoperative pericardial tamponade, postoperative organ dysfunction, preoperative LVEF, emergency operation, Sun's operation, coronary artery bypass grafting, hypertension, cardiac arrhythmia, and advanced avulsion of distal aortic dissection The survival rate was lower, the difference was statistically significant (P<0.05).In addition to OSAHS, coronary artery bypass grafting and preoperative pericardial tamponade were also risk factors for the increase of 36 month mortality rate (HR=11.28,95%CI: 1.98-46.25, P=0.009; HR=9.08, 95%CI: 2.22-41.3, P=0.032). Conclusions: There was no significant difference in mortality during hospitalization in patients with Stanford A aortic dissection combined with OSAHS. The survival rate of 36 months after operation was lower than that of the control group.

A brief introduction of identification of tumor antigen-specific TCR gene / 中国免疫学杂志

Adoptive therapy with T cells modified by tumor antigen specific T cell receptor(TCR)gene become a research hotspot in tumor biotherapy.The generation of high-affinity TCR is a significant pre-condition for TCR-T therapy.In this review,we focus on the identification of tumor antigen-specific TCR genes,which based on RT-PCR,single cell RT-PCR and CDR3 length polymorphism analysis.

Application of CRISPR/Cas9 in tumor immunotherapy / 中国免疫学杂志

In recent years,tumor immunotherapy has attracted more and more attention because of its remarkable curative effect and innovation.With the development of CRISPR gene editing system and its application in many fields,researchers have seen its great potential,especially in the field of cancer research.For adoptive cell therapy,CRISPR/Cas9 can knockout endogenous TCR and HLA-Ⅰ genes in TCR-T and CAR-T cells to generate universal effective T cells.It provided a new method to inhibit and block the immune checkpoint.The application of CRISPR/Cas9 in genetic screening makes antibody targeted therapy to a new level.CRISPR has greatly promoted the research of tumor immunotherapy.This article introduced the application of CRISPR/Cas9 gene editing system in tumor immunotherapy.

Effect of miRNA from Glycyrrhiza uralensis decoction on gene expression of human immune cells / 中国中药杂志

MicroRNAs(miRNA) are small non-coding RNAs that regulate the expression of protein coding genes by repressing translation of protein coding mRNA or enhancing mRNA degradation. Its functions have attracted more and more attention from the public. In recent years, the cross-border regulation of miRNA has become a new research direction, and provides a new perspective for people to comprehensively understand the functions of miRNA. Plant miRNA is usually methylated and not easy to degrade. According to our previous researches, there were abundant small RNAs in the decoction of dried liquorice, which provides a new way to study the mechanism of action of licorice. In this study, small RNAs extracted from Glycyrrhiza uralensis decoction and synthesized miRNA mimics were used to treat peripheral blood mononuclear cells(PBMC) isolated from healthy volunteers. The gene expression of toll-like receptors(TLRs), some transcription factors, signal molecules and cytokines were analyzed by RT-PCR. The results showed that glycyrrhiza miRNA could significantly regulate PBMC by inhibiting the expression of genes involved in T cell differentiation, inflammation and apoptosis. The study brought new ideas to us in comprehensively studying the mechanism of licorice and developing the traditional Chinese medicine.

Comparative Study Between Complete Ultrasound Guidance and Radiation Guidance in Percutaneous Balloon Pulmonary Valvuloplasty / 中国循环杂志

Objective:To evaluate the safety and efficacy of ultrasound guidance for percutaneous balloon pulmonary valvuloplasty (PBPV) in comparison with conventional X-ray guidance.Methods:Our research included in 2 groups:Ultrasound group,n=102 patients with PBPV under ultrasound guidance in our hospital from 2013-03 to 2016-08 and X-ray group,n=280 patients with PBPV under traditional X-ray guidance in our hospital at the same period of time.Post-operative effect was evaluated by echocardiography and compared between 2 groups.Results:The patients' age,body weight,pulmonary artery diameter,immediate post-operative pulmonary transvalvular pressure gradient (PTPG),the in-hospital time and cost were similar between 2 groups,P＞0.05.The success rate of operation in Ultrasound group and X-ray group was 99.0％ vs 100％,P=0.267.In the ultrasound group,1 patient was converted to a conventional surgery due to right ventricular outflow tract muscle spasm after dilation.The operation time in X-ray group was longer than Ultrasound group,(38.9±9.2) min vs (34.6±10.0) min,P＜0.001.The X-ray exposure time was (3.9±1.2) min in X-ray group.The mean follow-up time was (25.5±13.2) months and PTPG in Ultrasound group and X-ray group were (16.2±4.3) mmHg and (15.3±4.5) mmHg,P=0.120.No serious complications as death,peripheral vascular injury,cardiac perforation and pericardial effusion occurred in either group.Conclusion:PBPV under complete ultrasound guidance may not only avoid radiation and contrast agent,but also keep the safety and efficacy of minimally invasive conventional percutaneous interventional treatment.

Comparative Study Between Complete Ultrasound Guidance and Radiation Guidance in Percutaneous Balloon Pulmonary Valvuloplasty / 中国循环杂志

Objective:To evaluate the safety and efficacy of ultrasound guidance for percutaneous balloon pulmonary valvuloplasty (PBPV) in comparison with conventional X-ray guidance.Methods:Our research included in 2 groups:Ultrasound group,n=102 patients with PBPV under ultrasound guidance in our hospital from 2013-03 to 2016-08 and X-ray group,n=280 patients with PBPV under traditional X-ray guidance in our hospital at the same period of time.Post-operative effect was evaluated by echocardiography and compared between 2 groups.Results:The patients' age,body weight,pulmonary artery diameter,immediate post-operative pulmonary transvalvular pressure gradient (PTPG),the in-hospital time and cost were similar between 2 groups,P＞0.05.The success rate of operation in Ultrasound group and X-ray group was 99.0％ vs 100％,P=0.267.In the ultrasound group,1 patient was converted to a conventional surgery due to right ventricular outflow tract muscle spasm after dilation.The operation time in X-ray group was longer than Ultrasound group,(38.9±9.2) min vs (34.6±10.0) min,P＜0.001.The X-ray exposure time was (3.9±1.2) min in X-ray group.The mean follow-up time was (25.5±13.2) months and PTPG in Ultrasound group and X-ray group were (16.2±4.3) mmHg and (15.3±4.5) mmHg,P=0.120.No serious complications as death,peripheral vascular injury,cardiac perforation and pericardial effusion occurred in either group.Conclusion:PBPV under complete ultrasound guidance may not only avoid radiation and contrast agent,but also keep the safety and efficacy of minimally invasive conventional percutaneous interventional treatment.

Over-expression of receptor-interacting protein 140 in tumor-associated macrophages suppresses invasion and proliferation of hepatoma cells in vitro / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the role of receptor-interacting protein 140 (RIP140) in tumor-associated macrophages (TAMs) in the invasion and proliferation of hepatoma cells in vitro.</p><p><b>METHODS</b>Western blotting, qRT-PCR and flow cytometry were performed to examine the effects of lentivirus-mediated RIP140 over-expression in mouse peritoneal macrophages (PMs). Western blotting, qRT-PCR and immunofluorescence staining were used to detect the expression of RIP140 in TAMs following stimulation of the PMs with hepatocellular carcinoma conditioned medium (HCM) for 24 h. The polarization index and the expression of NF-κB and IL-6 were detected using qRT-PCR in TAMs in HCM-stimulated PMs with or without RIP140 over-expression. Transwell assay and flow cytometry were used to estimate the cell invasion and apoptosis. HE staining and immunohistochemical staining were used to analyze the effects of RIP140-over-expressing macrophages on the growth and tumor formation of H22 cells in BALB/c nude mice.</p><p><b>RESULTS</b>The lentivirus vector efficiently mediated RIP140 over-expression in mouse PMs. HCM stimulation significantly inhibited RIP140 expression in the TAMs and promoted their M2-like polarization. Over-expression of RIP140 in PMs suppressed the invasion and induced apoptosis of HCC cells. RIP140 over-expression inhibited HCM-induced M2 polarization and the activation of NF-κB/IL-6 axis in the TAMs, and RIP140- overexpressing TAMs obviously suppressed the growth of H22 cell xenograft in nude mice.</p><p><b>CONCLUSION</b>Over-expression of RIP140 in TAMs suppresses the growth and proliferation of hepatoma cells possibly by inhibiting M2 polarization of the TAMs.</p>

Choledochoduodenal fistula in Mainland China: a review of epidemiology, etiology, diagnosis and management

PURPOSE: Choledochoduodenal fistula (CDF) is an extremely rare condition even in the most populous nations. However, diagnostic tools are inadequate for the young surgeon to be made aware of such a rare condition before surgery. Hence, basic understanding of the epidemiology, etiology, and management for this unusual but discoverable condition are necessary and essential. METHODS: The exclusive case reports of CDF, which were published from 1983 to 2014 concerning mainland Chinese people, were performed to review the epidemiology, etiology, and management. RESULTS: A total of 728 cases were incorporated into this review among 48 papers. More than half of the CDF cases were female (416) with an average age of 57.3 years. CDF was usually caused by cholelithiasis (573 of 728). Epigastric pain (589 of 728) and cholangitis (395 of 728) were the most common symptoms of CDF. CDF was usually detected and confirmed by endoscopic retrograde cholangiopancreatography (ERCP) (475 of 728) in Mainland China. The fistulas larger than 1 cm (82 of 654) were recommended for surgical biliary reconstruction. Fistulas between 0.5 cm and 1.0 cm (467 of 654) which were followed frequently by cholangitis attacks also required surgery; the rest were recommended to have stone removal and/or the application of an effective biliary drainage. Fistulas less than 0.5 cm (105 of 654) were usually received conservative therapy. CONCLUSION: CDF should be considered in differential diagnosis of recurrent epigastric pain and cholangitis. A possible ERCP should be arranged to investigate carefully. Depending on the size of fistula and clinical presentation, different programs for CDF are indicated, ranging from drug therapy to choledochojejunostomy.

Comparison of transient changes in renal function between off-pump and on-pump coronary artery bypass grafting / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Acute renal failure following coronary artery bypass grafting (CABG) surgery is associated with high morbidity and mortality. Approximately half of all patients who develop acute kidney injury (AKI) subsequently develop acute renal failure (ARF). The purpose of the study was to compare early transient changes in renal function within the first post-operative week following CABG in patients that were either off-pump or on-pump.</p><p><b>METHODS</b>Eight hundred and forty-nine consecutive patients with isolated CABG in a single institution between January 1990 and August 2006 were retrospectively analyzed, including 518 off-pump and 331 on-pump patients. A multivariate Logistic regression model was constructed to identify risk factors for the development of AKI.</p><p><b>RESULTS</b>Sixty-one off-pump patients and 63 on-pump patients developed AKI. Risk factors for the development of post-operative AKI included an ejection fraction > or =50% or < or =30%, a pulse pressure > or =60 mmHg, peripheral vascular disease, diabetes, emergent procedure, triple-vessel disease, body mass index, peri-operative and post-operative. intra-aortic balloon pumping, NYHA class III and IV, and cardiopulmonary bypass. An ejection fraction > or =50% and peri-operative and post-operative intra-aortic balloon pumping were protective (OR <1). Peak serum creatinine for post-operative AKI was noted 12 hours and 24 hours in the off-pump and on-pump patients, respectively. Serum creatinine kinetics revealed rapid recovery in the 24th to 48th hour (off-pump) and the 48th to 72nd hour (on-pump).</p><p><b>CONCLUSION</b>Renal protection strategies are indicated from general anesthesia induction until 48 and 72 hours post-operatively in off-pump and on-pump patients, respectively.</p>

Incidence and risk factors of acute kidney injury post off-pump and on-pump coronary artery bypass grafting / 中华心血管病杂志

<p><b>OBJECTIVE</b>To investigate the incidence and risk factors of acute kidney injury (AKI) within the first postoperative week after off-pump or on-pump coronary artery bypass (OPCAB or CCAB) surgery.</p><p><b>METHODS</b>Consecutive patients underwent CABG between January 1990 and August 2006 in our institution and had normal serum creatinine (Scr) and estimated creatinine clearance (Ccr) values before operation were retrospectively analyzed. Multivariate logistic regression analysis was performed to identify risk factors for the development of AKI defined as Scr 130 - 199 micromol/L or Ccr 30 - 60 mlxmin(-1)x1.73 m(-2).</p><p><b>RESULTS</b>Incidence of AKI was significantly higher in patients underwent CCAB compared to those underwent OPCAB (63/331 vs. 61/518, P < 0.01). Peak Scr value was seen at 12th hour post OPCAB and 24th hour post CCAB, respectively. The rapid recovering of Scr occurred between 24th hour to 48th hour in patients underwent OPCAB and 48th hour to 72th hour in patients underwent CCAB surgery. Multivariate forward stepwise logistic regression analysis showed that LVEF < 30%, pulse pressure >/= 60 mm Hg (1 mm Hg = 0.133 kPa), peripheral vascular disease, diabetes, emergent procedure, triple-vessel disease, higher body mass index (kg/m(2)), intraoperative and postoperative IABP, NYHA class III or IV and cardiopulmonary bypass were risk factors for the development of postoperative AKI following CABG, while LVEF > 50% and intraoperative and postoperative IABP were associated with lower incidence of AKI (OR < 1).</p><p><b>CONCLUSION</b>AKI is not a rare complication post OPCAB or CCAB surgery, especially in patients with reduced LVEF, increased pulse pressure, peripheral vascular disease, diabetes, emergent procedure, triple-vessel disease, higher body mass index, intraoperative and postoperative IABP.</p>

Correction of maxillofacial expansive deformities resulted from cystic lesions of the mandible by suction drainage / 中华整形外科杂志

<p><b>OBJECTIVE</b>To prospectively investigate the effectiveness of suction drainage for correction of maxillofacial deformities caused by cystic lesions of the mandible.</p><p><b>METHODS</b>Suction drainage was performed in 21 cases with large cystic lesions of the mandible which had expanded facial contour. Clinical and radiological examinations of these patients were carried out regularly. The volume of the cavity was measured during treatment. The expansion indexes on axial CT image and area of the cyst on a panoramic radiograph were measured preoperatively and postoperatively. The curettage via intraoral incision was completed until the extent of disease significantly shrunk.</p><p><b>RESULTS</b>After a mean duration of suction drainage of 5.1 months, the volume and the size on the panoramic radiographic of the cystic lesions were reduced by an average of 84% and 63% respectively. The expansion indexes were reduced notably during treatment. Computerized tomography of the mandible showed that the contour of expanded mandible was restored greatly and notable new bone was formed in the area of cortex perforation.</p><p><b>CONCLUSIONS</b>Suction drainage is a useful treatment modality for the primary management of giant cystic lesion of the mandible, and can fast correct maxillofacial deformities caused by bony expansion and perforation in the area of cystic lesions.</p>

Clinical analysis about survival condition of different types of platysma myocutaneous flaps / 中华整形外科杂志

<p><b>OBJECTIVE</b>To compare the postoperative outcome among different types of platysma myocutaneous flaps by reviewing 54 cases.</p><p><b>METHODS</b>From 1984 to 2004, 54 patients with oral cancer underwent immediate reconstruction of intraoral defects using the platysma myocutaneous flaps. In 54 cases, 12 cases were transversal platysma myocutaneous flaps and the other 42 cases were vertical platysma myocutaneous flaps. In these 42 cases, 26 cases preserved facial artery and vein yet 16 cases didn't preserve them. The survival condition of these flaps were compared.</p><p><b>RESULTS</b>In the 12 cases of transversal platysma myocutaneous flaps, 10 cases survived totally and 2 cases had partial necrosis. In the 26 cases of vertical platysma myocutaneous flaps preserved facial artery and vein, 23 cases survived completely and 3 cases had partial necrosis. However, in the 16 cases of vertical platysma myocutaneous flaps in that facial artery and veins were not preserved, 10 cases survived completely, whereas 4 cases had partial necrosis and 2 cases had complete necrosis.</p><p><b>CONCLUSIONS</b>The survival rates of platysma myocutaneous flaps that didn't preserve facial artery and vein were low. Its clinical use should be prudent.</p>

Effect of Paraformaldehyde Fixation on the FRET Efficiency Calculation between Fluorescent Proteins / 中国生物工程杂志

Objective:To investigate the effect of paraformaldehyde fixation on measuring the protein-protein interaction by fluorescence resonance energy transfer(FRET)to resolve the problem of FRET efficiency calculation in excess-movement cells.Methods:The C terminals of TCR ? chain(TRA)and TCR ? chain(TRB)genes,which were ideal for protein-protein interaction research,were fused with ECFP and EYFP gene respectively by fusion PCR and transferred into target cell.A grou Pcells were fixed in paraformaldehyde(0.5%)for 0.5~1h and another left alive,then these cells were subject to ECFP/EYFP FRET calculation with confocal laser scanning microscope.The ECFP/EYFP FRET efficiencies in live and fixed cell were analyzed and compared.Results:There is no significant statistical difference between the ECFP/EYFP FRET efficiencies of live cell and cell fixed with lower paraformaldehyde concentration and shorter incubation time.Conclusion:fixation with low-concentration paraformaldehyde and short-time incubation has no distinct influence on measuring protein-protein interaction,and facilitated the FRET calculation in excess-movement cells.