1.Inducible deactivation mechanism underlying JNK signal cascade
Chinese Pharmacological Bulletin 2003;0(09):-
MAPKKK (MEKK1 or ASK1)/MAPKK (SEK1 or MKK7)/JNK signal cascade is an important pathway which mediates apoptosis. MAPK phosphotase can deactivate JNK by dephosphorylation of JNK.The interaction between JNK and c-Jun can also be negatively regulated by NO through S-nitrosylation. SGK1 or Akt can result in deactivation of SEK1 through its phosphorylation at the Ser78 site.The c-FLIPL can block this cascade through binding with MKK7.GST Mu1-1 interferes and suppresses MEKK1-mediated apoptosis. GST Pi 1-1 and TRX have a dose-dependent inhibitory effect on ASK1 through forming protein complex. The deactivation of JNK can enhance drug resistance of tumor cells and counteract the injury from a wide variety of stimulus. Here,how these proteins induce deactivation of the pathway and mediate anti-apoptosis has been discussed.
2.Genetic Engineering Vaccine of Toxoplasma Gondii
China Biotechnology 2006;0(11):-
The Toxoplasma gondii vaccine is the best way to prevent Toxoplasma gondii infection. The improvement of the biological techology promots the study of Toxoplasma gondii vaccine. The newest study progresses of Toxoplasma gondii genetic engineering vaccine,which is summarized on the basis of the current study results,is respected to provide new aspects of the Toxoplasma gondii vaccine study for the researches.
3.8p11 myeloproliferative syndrome: one case report and review of literature
Fangfang WANG ; Jun GUAN ; Jian GU
Journal of Leukemia & Lymphoma 2009;18(11):679-680,686
Objective To improve the recognition of the 8p11 myeloproliferative syndrome(EMS).Methods Here a case with EMS was reported and the medical literature on this topic were reviewed. Results The patient was definitely dignosed and was treated with DA regimen. Conclusion EMS is a rare hematologic malignancy with poor prognosis and short life span. The small molecule tyrosine kinase inhibitors may bring hope in the future for patient with EMS.
4.Duodenal fistula caused by surgical procedures of the distal common bile duct
Jun GU ; Jieshou LI ; Jian′An REN ;
Chinese Journal of General Surgery 2000;0(12):-
Objective To investigate the etiology of and therapy for duodenal fistula caused by distal common bile duct operation. Methods An retrospective analysis of 19 cases of duodenal fistula after distal common bile duct operation was made.All cases received surgical management after the fistula was identified.Surgical procedures included abdominal abscess drainage in 2 cases, gastrostomy and jejunostomy combined with abscess drainage in 11 cases, gastrostomy and jejunostomy combined with duodenal repair?abscess drainage in 3 cases,gastrojejunostomy with pyloric exclusion combined jejunostomy in 1 case, repair of fistula with padicled intestinal seromuscular patch combined with gastrostomy and jejunostomy in 1 case, and repair of fistula with padicled intestinal seromuscular patch combined with gastrostomy and jejunostomy plus sphincteroplasty in one case. Results Among 19 cases,15 were cured. Two died of gastrointestinal bleeding, one of severe retroperitoneal infection,one of severe pancreatitis. ConclusionsEarly diagnosis is of great importance for the treatment of duodenal injury. Drainage is the mainstay for the treatment of iatrogenic duodenal fistula, while enough enteral nutrition should be given to accelerate spontaneous closure of the fistula.
6.Effects of Different Dosage of Insulin-Like Growth Factor-1 on Apoptotic Protein of Myocard in Mice with Viral Myocarditis
zuo-jun, WANG ; jian, GU ; xing-yuan, HUANG
Journal of Applied Clinical Pediatrics 2006;0(18):-
Objective To explore the effects of different period of insulin-like growth factor-1(IGF-1)on B cell lymphoma/leukeamia-2 gene(BCL-2)and BCL-2 associated X protein(BAX)of myocard in mice with viral myocarditis.Methods Male Balb/c mice were randomly divided into control group,coxsackie viral B3(CVB3)infection group(infection group),IGF-1-treated group in earlier stage(0-6 d)and acute stage(7-13 d),injected IGF-1 of exogenous in abdominal cavity [30 ?g/(kg?d)].Animals were killed at the 14 day.The immunohistochemical studies and medical imagine analysis system were performed to evaluate the expression of BCL-2 and BAX in myocardial tissue.Results In infection group,the expression of BCL-2 reduced and BAX increased than those of control and treatment group(Pa
7.Effect of interleukin-10 on experimental severe acute pancreatitis's histopathologic score in rats
Jun-zhong YUE ; Jun-zhao GU ; Jian-guo XUE ; Yanzhong ZHOU
Chinese Journal of Rehabilitation Theory and Practice 2004;10(9):534-535
ObjectiveTo explore effect of interleukin-10 (IL-10) on histopathologic scores of severe acute pancreatitis (SAP) and the level of serum amylase (AMY) in rats.Methods48 female and male adult Sprague Dawley rats (200—300g) were randomly allocated into three groups: OPgroup, SAP group and IL-10 group with 16 rats in each group. SAP was made with retrograde ductal infusion of 5% sodium taurocholate solution.ResultsIn SAP and IL-10 group, there were interstitial edema, necrosis, neutrophil infiltration and interstitial hemorrhage of pancreas, more or less. At 6h and 12h after models were made, the pancreatic histopathologic score in IL-10 group (4.00±0.33 and 6.25±0.25) were significantly lower than that in SAP group (6.13±0.35 and 9.50±0.50)(P<0.01). At 6 h after models were made, the serum AMY in IL-10 group was lower than that in SAP group (P<0.05), but at 12 h there were no differences.ConclusionIn earlier period of SAP in rats, IL-10 can lower the serum AMY level, and significantly reduced pancreatic histologic score (edema, inflammation, hemorrhage, and necrosis).
8.Analysis of relevant factors for delayed cerebral edema and plasma matrix metalloproteinase 9 after intracerebral hemorrhage
Shuangshuang GU ; Jun ZHANG ; Ling HAN ; Jian QIAN ; Qiming LI ; Dujuan SHA
Chinese Journal of Cerebrovascular Diseases 2015;(6):297-301
Objective Toinvestigatetheclinicalsignificanceofplasmamatrixmetalloproteinase9 (MMP-9)intheformationofdelayedcerebraledemaafterintracerebralhemorrhage.Methods The clinical data of 107 patients with spontaneous intracerebral hemorrhage treated with conservative medical treatment were analyzed retrospectively. According to the clinical features and imaging changes,they were divided into either a delayed cerebral edema group (case group n=39)or a non-delayed cerebral edema group (control group n =68 ). The plasma MMP-9 level was detected with enzyme-linked immunosorbent assay within 24 h after onset. The patients performed head CT scan again at day 7 and 14 after admission. The changes of hematoma and edema volume were detected. All the possible factors associated with the formation of delayed cerebral edema were firstly analyzed by the univariate analysis. Univariate analysis showed that the variables with significant differences were enrolled into multiple logistic regression analysis. Results TheplasmaMMP-9levelofthedelayedbrainedemagroupwassignificantlyhigherthanthatof the control group,they were 189 ± 51 and 118 ± 27 mg/L respectively (P<0. 01). The result of univariate analysis showed that age,history of smoking,blood glucose level,baseline hematoma volume,and National Institute of Health stroke scale (NIHSS )score on admission might be associated with the formation of delayed cerebral edema after intracerebral hemorrhage. Logistic regression analysis showed that MMP-9 level (OR,9. 745,95%CI 6. 754-15. 466,P<0. 01),baseline hematoma volume (OR,2. 411,95%CI 1. 190-2. 728,P =0. 018),blood glucose level on admission (OR,1. 327,95%CI 1. 133 -1. 850,P =0.004),and NIHSS score (OR,1. 867,95%CI 1. 272-2. 364,P=0. 020)were the independent risk factorsfortheformationofdelayedcerebraledemaafterintracerebralhemorrhage.Conclusion Theamount of bleeding,NIHSS score,and hyperglycemia are the risk factors for the formation of delayed cerebral edema in patients with spontaneous intracerebral hemorrhage,while high MMP-9 level on admission indicated that the risk of the formation of delayed cerebral edema is high.
9.Epileptic seizures in acute cerebral venous sinus thrombosis:risk factors and effect on outcome
Dujuan SHA ; Hao MA ; Shuangshuang GU ; Luna WANG ; Jian QIAN ; Yibin CHEN ; Jun ZHANG
International Journal of Cerebrovascular Diseases 2015;(6):449-452
ObjectiveToinvestigatetheriskfactorsofepilepticseizuresanditseffectonclinical outcome in patients w ith cerebral venous sinus thrombosis (CVST). Methods The patients w ith CVST w ere enrol ed retrospectively. The risk factors, clinical manifestations, and imaging data w ere col ected. The data of an epileptic seizure group and a non-epileptic seizure group w ere compared. Results A total of 69 patients with CVST were enroled, including 32 (46.38%) secondary epileptic seizures. In the aspect of clinical manifestations, more patients show ed hemiplegia in the epileptic seizure group (37.50%vs.15.63%; χ2 =5.240, P=0.020). Imaging examination show ed that more patients in the epileptic seizure group presented w ith bleeding ( 29.41%vs. 10.81%; χ2 = 3.818, P= 0.047 ), more lesion involving frontal lobe (31.25%vs.10.81%; χ2 =5.008, P=0.023), and temporal lobe (43.75%vs.8.11%; χ2 =7.318, P=0.005), and the thrombosis sites w ere more common in the superior sagittal sinuses (65.63%vs.40.54%;χ2 =4.264, P=0.036). Multivariate logistic regression analysis show ed that focal neurological deficits (odds ratio 5.167, 95% confidence interval 1.993-15.764; P=0.004) and superior sagittal sinus thrombosis (odds ratio 0.126, 95% confidence interval 0.042-0.370; P=0.039) w ere the independent risk factors for patients w ith secondary epileptic seizures. There w ere no significant differences in hospital mortality (6.25%vs.2.7%; χ2 =0.512, P=0.469 ) and 90 day 90-day ful recovery rate ( defined as Barthel Index >60) (81.25%vs.86.47%; χ2 =0.346, P=0.793) betw een the epileptic seizure group and the non-epileptic seizure group. Conclusions Focal neurologic deficits and superior sagittal sinus thrombosis are the independent risk factors for secondary epileptic seizures, how ever, secondary epileptic seizures is not associ-ated w ith in-hospital mortality risk and 90-day clinical outcomes in patients w ith CVST.
10.Genesis and clinic significance of chromosome 1 abnormality in hematologic malignancies
Wei WU ; Jian GU ; Hong WANG ; Li MA ; Zhongqiang WANG ; Jun NI
Journal of Leukemia & Lymphoma 2012;21(6):353-355
[Objective] To analyze the frequency,type of chromosome 1 clonal abnormalities in hematologic malignancies,and to understand the clinical and biological significance of its occurrence.[Methods] Retrospectively analyzed of 256 cases of patients with hematologic malignancies cytogenetic R banding karyotype analysis [Results].Summarized the abnormal chromosomel karyotype and clinical data summary and combined with literature review.Results There were 25 samples with clonal disorder of chromosome 1 in 256 cases of patients with malignant hematologic disease,accounting for 9.8 percent of the total samples,including ALL-L2,ANLL-M2,MDS,MM,lymphoma with bone marrow involvement,CML with accelerated phase and blast crisis,plasma cell leukemia and chronic myelogenous monocytic leukemia.The types of the clonal disorder included chromosome 1 translocation with other chromosomes[including 3cases with t(1;19),and 2 cases with t(1;4)],there were 7 cases with chromosome 1 the increase or missing partly, and 7cases with increasing a full or partial deletion of chromosome 1,and also 3 cases with isochromosome of 1q.t(1 ; 19) can be found in B lymphocyte proliferative diseases,while t(1;14) was found in T-ALL.The clinical efficacy and short survival were found in 20 patients with chromosome 1 clonal abnormalities. [Conclusion] Chromosome I clonal abnormalities in hematologic malignancies is common in acute leukemia,MDS,MM,and atypical abnormality is more than typical abnormality.It is common in chromosome 1 translocation with other chromosomes,lq-trisomy.The recurrent chromosome abnormalities is t (1;19) and t (1;14),which is related with the leukemia immune phenotype.lq-trisoiny and amplification of 1q21 is effective in the therapy and guide the prognosis of MDS and MM.