1.Roles of SUMOylation and de-SUMOylation in carcinogenesis
Journal of International Oncology 2012;39(6):406-408
SUMO (small ubiquitin-related modifier) is involved in the post-translational modifications of proteins,and this process is referred to as SUMOylation.SUMOylation plays an important role in the regulation of cellular activities such as strengthening the stability of the protein,nucleocytoplasmic transport,DNA repair,DNA replication,mitotic and meiotic chromosome behavior,et al.SUMOylation is a dynamic process and can be reversed by SUMO-specific proteases (SENP).Once the balance between SUMOylation and de-SUMOylation is broken,there will be an aberrant expression of SUMO or SENPs in cells to happen,which may lead to the tumor occturtrence.
2.The surgical treatment of female stress urinary incontinence recurrence after operation
Chinese Journal of Postgraduates of Medicine 2011;34(11):11-13
Objective To evaluate the effect and safety of transobturator inside-out tension-free urethral suspension (TVT-O) as the surgical treatment on post-operational recurrence of female stress urinary incontinence (SUI). Methods Eleven women with SUI recurrence who underwent TVT-O were selected in the research. Their incontinence recurred from 1 months to 8 years after the previous surgical treatment.Results The operative time was (28 ±9) min, the bleeding volume was (15 ±5) ml. Postoperative complications: urinary retention in 1 case, vaginal erosion in 1 case. Follow-up was enforced for 6-36months, median time was 16 months. Grouts-Blaivas analogue scale:among the 11 patients, 9 patients were cured, 2 patients were improved. ICI-Q-SF score: preoperative 13-21 ( 15.36 ± 2.34) scores compared to postoperative 0-9 (1.46 ±3.27) scores (t =5.850,P <0.01 ). I-QOL score: preoperative 23.33-36.67(29.85 ± 4.74) scores compared to postoperative 66.67-100.00 (95.15 ± 10.12) scores (t = 17.753,P <0.01 ). PISQ-12 score of 10 patients: preoperative 16-25 (20.10 ± 3.07) scores compared to postoperative 11-20( 14.00 ± 2.83 ) scores (t = 11.600, P < 0.01 ). Conclusion If conservative treatments fail, TVT-O is highly effective and safe for the postoperative recurrent SUI.
3.Effects of oxidized HDL on the levels of MCP-1, ICAM-1 and free calcium in cultured human umbilical venous endothelial cells
Chinese Journal of Pathophysiology 2001;17(6):559-562
AIM: To study the effects of oxidized high-density lipoprotein (oxHDL) on the expression of monocyte chemoattractant protein-1(MCP-1) and intercellular adhesion molecule-1(ICAM-1) and intracellular free calcium concentration ([Ca2+]i) level in cultured human umbilical venous endothelial cells(HUVECs). METHODS: The MCP-1 protein content in the medium of conditioned HUVEC was measured by ELISA, and the ICAM-1 on HUVECs was detected by indirect immunofluorescence, and [Ca2+]i was determined by Fluo-3/AM, the injury of cells was observed by scanning electron microscopy (SEM).RESULTS: oxHDL could induce the expression of MCP-1 and ICAM-1 in HUVECs. In oxHDL group (HUVECs were incubated with 100 mg protein/L oxHDL for 24 h), the levels of MCP-1, ICAM-1 and [Ca2+]i increased by 160%, 60% and 70% respectively compared with the control group (P<0.01). When HUVECs were incubated with 300 mg protein/L oxHDL for 24 h, cells were injured obviously. CONCLUSION: By inducing the expression of ICAM-1 and MCP-1 in endothelial cells, oxHDL may promote monocyte-endothelium adhesion and monocyte migration to intima, it may promote atherosclerosis as oxidized low-density lipoprotein (oxLDL).
5.The effect of tonic pain stimulation on the attention network test in young males
Chinese Journal of Behavioral Medicine and Brain Science 2009;18(12):1125-1127
Objective To investigate the effect of tonic pain stimulation on the attention network test (ANT) . Methods Twenty healthy males recruited from university were enrolled in this study, and laboratory pain was induced by cuff pressure stimulation on the upper arm. All subjects performed the task separately under pain, no-pain and pressure conditions. The reaction time and accuracy rate of the ANT were quantified. The subjective pain perception was assessed by the short-form McGill Pain Questionnaire ( SF-MPQ) . Results Across three conditions, the executive network showed significant pain effect (F = 76.31 , P< 0.001) : no-pain condition at (92.51 ±35.71 )ms, pressure condition at (94.06 ±25. 28) ms, pain condition at ( 120.24 ± 18.21 )ms. Furthermore, the average reaction time and the A-scores (i. e. affective words) in SF-MPQ caused by pain was positively correlated ( r = 0.11, P = 0.03) . Conclusion Pain can result in deficit in the executive network for attention regulation. The negative affections caused by pain can interfere with attention.
6.The effect of EC on the ET-induced fever in rabbits
Chinese Journal of Pathophysiology 1986;0(04):-
The effects of intravenous injection of purifed EC on the rectal tempera-ture in normal rabbits and febrile rabbits induced by ET and concentrations of Fe~(2+), Zn~(2+),Cu~(2+) in serum were observed. The results showed that EC could lower the rectal tempera-ture in normal rabbits and also the increased rectal temperature in febrile rabbits. Mean-while, EC could inhibit the formation of the second phase of ET-fever. But EC had noeffect on the changed concentrations of FC~(2+), Zn~(2+), Cu~(2+) in serum caused by ET. Thesefindings suggest that EC may particiate in the regulation of body temperarure under physio-logical and febrile conditions, but not of acute phase response produced by ET.
8.A meta-analysis of integration of Traditional and Western Medicine treatment versus Western treatment in patients with severe acute pancreatitis
Chinese Journal of Current Advances in General Surgery 1998;0(01):-
Objective:To analyze and compare the effect of integration of Traditional and Western Medicine treatment and western treatment for patients with severe acute pancreatitis.Methods:According to the including criteria,nineteen randomized controlled trials of this topic were enrolled into the analysis.The detail about the trial design characters of the subjects, results of the studies were reviewed and analyzed by Revman 4.1 software.Results:Compared with integration of Traditional and Western Medicine treatment,western treatment was associated with a significantly higher incidence of mortality(RR=0.35,95%CI 0.25~0.48,P
9.Progress of neural invasion in pancreatic cancer
International Journal of Surgery 2013;(2):116-119
Pancreatic cancer is a kind of highly malignant aggressive cancers.Perinearal growth is one of the importcant biological characteristics of pancreatic cancer.Perineural invasion is an independent prognostic indicator of its prognosis.However,the mechanism has not yet completely clear.The pancreatic cancer perineural invasion mechanism research has been the focus of scholars to discuss,however it' s difficult to break through.Therefore,the discussion pancreatic violation of the peripancreatic neural mechanism for early clinical find,early treatment is essential.The mechanisms of pancreatic cancer research,from all kinds of adhesion molecule to the nerve growth factor,related ligand protein path to susceptibility gene expression,have been reported largely,which helps enhance people' s awareness of peripancreatic neural invasion.At the same time,perineural invasion in the early detection of disease,prolonging survival period and improving the quality of life has important significance.Now the progresses of reviews in recent years are discussed as follows.
10.Selection and assessment of digestive tract reconstruction patterns for gastric cancer
Chinese Journal of Digestive Surgery 2013;(1):25-29
With the improvement of survival outcome by modern surgical treatment,more and more attention has been paid to the postoperative quality of life.As known,the most related factor of postoperative quality of life is the pattern of digestive tract reconstruction.Current evidences indicate that Roux-en-Y esophagojejunostomy + jejunal pouch has some advantages in total gastrectomy and Roux-en-Y gastrojejunostomy might be most suitable reconstruction in distal gastrectomy.Pylorns-preserving gastrectomy and proximal gastrectomy are only considered in early gastric cancer,i.e.predictive cTlcN0.Pylorus-preserving gastrectomy does not exactly superior to distal gastrectomy.Total gastrectomy with Roux-en-Y esophagojejunostomy is superior to proximal gastrectomy with esophagogastrostomy.For unresectable lower tumor with gastric outlet obstruction,gastric cancer Devine exclusion + gastrojejunostomy might be better than simple gastrojejunostomy,while stent placement is safer and suitable for predictively short-term survival,poor performance status or senility patients.However,the current available evidences of reconstruction in gastric cancer surgery is still poor in quality and more high-quality large-scale multi-center randomized controlled trials are required to resolve the controversies.