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1.
International Journal of Cerebrovascular Diseases ; (12): 680-686, 2020.
Article in Chinese | WPRIM | ID: wpr-863178

ABSTRACT

Objective:To investigate the predicting value of cardiac serum troponin I (cTnI) levels for the clinical outcome of patients with aneurismal subarachnoid hemorrhage (aSAH) after endovascular coil embolization.Methods:Patients with aSAH treated with endovascular coil embolization in the Department of Neurology, Fujian Provincial Hospital from January 2017 to December 2019 were enrolled retrospectively. The baseline data, clinical grade, serum cTnI and N-terminal-pro B-type natriuretic peptide (NT-proBNP) levels, electrocardiogram, aneurysm characteristics, endovascular treatment status, and complications of the patents were collected. The outcomes were evaluated by the modified Rankin Scale (mRS) at 90 d after onset. Poor outcome was defined as >2 points. Multivariate logistic regression analysis was used to identify the independent risk factors for poor outcomes. Receiver operating characteristic (ROC) curve was used to evaluate the predictive value of serum cTnI levels for poor outcomes. Results:A total of 316 patients were enrolled, among them, 256 had good outcomes (81.01%), 60 had poor outcomes (18.99%) and 13 died (4.11%). Forty-seven patients (14.87%) had elevated serum cTnI levels. The proportion of patients with elevated serum cTnI levels in the poor outcome group was significantly higher than that in the good outcome group (45% vs. 7.81%; P<0.001). Compared with the good outcome group, the Glasgow Coma Scale score of the poor outcome group was lower, and the Hunt-Hess grades and Fisher grades were higher ( P<0.001). The proportion of patients with elevated NT-proBNP levels and abnormal electrocardiogram in the poor outcome group (all P<0.001) were also significantly higher than those in the good outcome group. The proportion of receiving stent-assisted coil embolization, cerebrospinal fluid replacement and ventricular drainage, as well as the incidence of complicated with cerebral infarction, hydrocephalus, seizure and rebleeding in the poor outcome group were significantly higher than those in the good outcome group (all P<0.01). Multivariate logistic regression analysis showed that after adjusting for other confounding factors, Hunt-Hess grading 3-5 (odds ratio [ OR] 6.615, 95% confidence interval [ CI]2.158-20.278; P=0.001), Fisher grading 3-4 ( OR 3.719, 95% CI 1.479-9.352; P=0.005), cerebral infarction ( OR 15.814, 95% CI 4.978-50.235; P<0.001), rebleeding ( OR 13.324, 95% CI 2.092-84.881, P=0.006) and elevated serum cTnI levels ( OR 3.874, 95% CI 1.406-10.672; P=0.009) were significantly and independently associated with the poor outcomes, which could independently predict the poor outcomes after the onset of aSAH at 90 d. The area under the ROC curve for serum cTnI levels predicting poor outcomes was 0.747 (95% CI 0.666-0.828; P<0.001). The best cut-off value was 0.025 μg/L, the sensitivity and specificity were 60.0% and 87.9%, respectively. Conclusion:The elevated serum cTnI levels have certain predictive value for the poor outcomes of patients with aSAH after endovascular coil embolization.

2.
Chinese Journal of Biotechnology ; (12): 2029-2039, 2020.
Article in Chinese | WPRIM | ID: wpr-878463

ABSTRACT

Ischemic stroke is a major health crisis causing high mortality and morbidity. The key treatment relies on the rapid intervention to dissolve thrombus, to reduce bleeding side effect and re-canalize clotted blood vessels using clot lysis drugs. Tissue plasminogen activator (tPA) is the only FDA-approved drug for ischemic stroke, but it has many limitations in clinical use. In recent years, the development of thrombolytic drugs and treatment strategies based on tPA has been progressed rapidly. Here we review the recent progress in this field, including the contributions from us and others, to promote the future development of novel thrombolytic drugs.


Subject(s)
Humans , Brain Ischemia/drug therapy , Fibrinolytic Agents/therapeutic use , Research/trends , Stroke/drug therapy , Thrombolytic Therapy/trends , Tissue Plasminogen Activator/therapeutic use
3.
China Pharmacy ; (12): 2656-2664, 2020.
Article in Chinese | WPRIM | ID: wpr-829604

ABSTRACT

OBJECTIVE:To reappraise systematic review/Meta-analysis (SRs/MAs)of the efficacy and safety of glucagon-like peptide 1(GLP-1)receptor agonist in the treatment of type 2 diabetes mellitus (T2DM),and to provide evidence-based reference for clinical use of these drugs in the treatment of T 2DM. METHODS :Retireved from Cochrane library ,PubMed,Embase,CBM, Wanfang database and CNKI ,systematic review/Me ta-analysis about GLP- 1 receptor agonist in the treatment of T 2DM were collected during the inception to Dec. 2019. After data extraction of literatures met inclusion and exclusion criteria ,GRADE system was used to evaluate the quality of evidence included in the study ,and the evidence of efficacy and safety outcome indexes were summarized. RESULTS :Finally 31 literatures were included ,involving 91 outcome indexes ,and GRADE evidence quality was medium,among which 4(4.4%)were very-low-quality ,33(36.3%)were low-quality ,45(49.5%)were medium-quality ,and 9 (9.9%)were high-quality outcome indicators. The results of evidence summary showed that GLP- 1 receptor agonists were better than or similar to placebo and other oral hypoglycemic drugs , better than dipeptidyl peptidase 4 (DPP-4) inhibitors in . reducing the level of HbA 1c;better than or similar to placebo , JDZX2015240) better than other oral hypoglycemic agents and DPP- 4 2276299207@qq.com inhibitors in reducing the level of fasting glucose ;similar to DDP-4 inhibitors,higher than or similar to placebo ,lower than other oral hypoglycemic dru gs in the incidence of hypoglycemia;higher than other oral hypoglycemic drugs ,placebo and DPP- 4 inhibitors in the incidence of diarrhea and nausea ; higher than other oral hypoglycemic drugs and placebo in the incidence of vomiting. CONCLUSIONS :The evidence quality of systematic review/Meta-analysis about GLP- 1 receptor agonist in the treatment of T 2DM are moderate. These drugs have good clinical efficacy in the treatment of T 2DM,but their safety are not as good as placebo or other oral hypoglycemic drugs.

4.
International Journal of Cerebrovascular Diseases ; (12): 910-916, 2017.
Article in Chinese | WPRIM | ID: wpr-665654

ABSTRACT

Objective To investigate the correlation between the location of ruptured intracranial vertebral artery dissecting aneurysm (VADA)and the outcome after endovascular treatment. Methods Thirty-six patients with ruptured intracranial VADA undergoing endovascular treatment were enrolled retrospectively. According to the relationship between VADA and the location of the opening of posterior inferior cerebellar artery(PICA),they were divided into 3 groups:proximal to PICA group (n=13), distal to PICA group (n=13),and PICA involvement group (n=10). The demographic data, vascular risk factors, clinical features, imaging features, endovascular treatment mode, postoperative complications, and differece of the good outcome rate(defined as the modified Rankin scale 0-2)after 6 months of treatment were compared.Results Seven patients in the proximal to PICA group received reconstructive endovascular treatment (RET), and 6 received endovascular internal trapping(EIT);the good outcome rate was 100%(13/13).Seven patients in the distal to PICA group received RET,6 were treated with EIT;the good outcome rate was 84.6%(11/13).Four patients in the PICA involvement group received RET,and 6 received EIT,and 2 of them received contralateral vertebral artery retrograde PICA stenting combined with VADA segment and proximal vertebral artery coil embolization;the good outcome rate was 60.0%(6/10). There were significant differences in the overall outcome good rate among the 3 groups (P<0.05). The good outcome rate in the PICA involvement group was significant lower than that in the proximal to PICA group,and significantly lower than that in the proximal to PICA combined with distal to PICA group(P<0.05).Multivariate logistic regression analysis showed that only Fisher grade 3-4 was the independent risk factor for poor outcome (odds ratio 28.0, 95% confidence interval 1.71-458.82; P=0.020). Conclusions The surgical options of endovascular treatment for ruptured intracranial VADA needs to evaluate the relationship between the location of dissecting aneurysms and the PICA origin. The risk of endovascular treatment in patients with intracranial VADA involving the origin of PICA is higher and it may affect the outcome.

5.
International Journal of Cerebrovascular Diseases ; (12): 617-620, 2012.
Article in Chinese | WPRIM | ID: wpr-420300

ABSTRACT

Cerebral hyperperfusion syndrome (CHS) is one of the complications after stenting in patients with carotid stenosis.Although its incidence is lower,it may result in serious disability or death in patients.Full awareness and understanding of CHS and its related risk factors may contribute to its prevention and treatment.

6.
International Journal of Surgery ; (12): 16-19, 2012.
Article in Chinese | WPRIM | ID: wpr-417982

ABSTRACT

ObjectiveTo evaluate the feasibility,safety and therapeutic efficiency of laparoscopic total mesorectal excision (TME) with anal sphincter preservation in the treatment of the middle-lower rectal cancer.MethodsFrom February 2008 to June 2010,37 patients with middle-lower rectal cancer received laparoscopic TME with anal sphincter preservation,while 45 patients underwent conventional open TME with anal sphincter preservation according to their wills.The operative procedures,postoperative recovery,postoperative complication and short-term outcome were collected and compared between the two groups.ResultsBlood loss was (60.6 ± 20.9) mL in laparoscope group which was significantly less than that in laparotomy group (P<0.01),time for bowel movement retrieval and hospital stay were (3.3 ±0.6) and (9.2 ±2.8) days respectively,which were significantly shorter than those in laparotomy group (P < 0.01 ).The incidence of postoperative complications was 8.1% in laparoscope group,which was significantly lower than those in laparotomy group (P < 0.05 ).The mean distance between resected margin and the tumor,the mean number of disected lymph nodes were not different between the two groups.The rate of sphincter preservation was 91.9% in laparoscope group,which was higher than those in laparotomy group (73.3%) ( P < 0.05 ).All patients were followed-up from 6 to 36 months,the recurrent rate and overall survival rate were 10.8% and 94.6% in laparoscope group,with no significant difference compared to those in laparotomy group (11.1% and 91.1%,P > 0.05).ConclusionsLaparoscopic TME with anal sphincter preservation which achieved the same effect of oncological clearance is a safe and feasible procedure for middle-lower rectal cancer,with less postoperative complications and better recovery after treatment,and enhances the rate of sphincter preservation,which is worthy of clinical application.

7.
Chinese Journal of Neurology ; (12): 774-778, 2012.
Article in Chinese | WPRIM | ID: wpr-430421

ABSTRACT

Objective To investigate the value of hyperintense vessel signs (HVS) on fluidattenuated inversion recovery (FLAIR) sequence for assessing the patterns of collateral blood flow in adult moyamoya disease (MMD).Methods Forty-one adult patients with non-hemorrhagic MMD retrieved from Nanjing Stroke Registry Program between August 2008 and January 2011 were identified by digital cerebral angiography and performed the examination of FLAIR sequence in Jinling hospital.According to the different sites of HVS located in the territory of the middle cerebral artery,the patterns of HVS were classified into grades 0-3: Grade 0,absence of HVS ; Grade 1,HVS limited in the cerebral sulci of temporal lobe and Sylvian fissure ; Grade 2,HVS in the cerebral sulci of frontal and parietal lobe regions and Sylvian fissure;and Grade 3,HVS in the combined territories of Grade 1 and Grade 2.According to the intracerebral collateral blood flow,steno-occlusions of the arteries were classified into three types: Type 1,residual antegrade flow across steno-occlusive lesions; Type 2,retrograde flow via leptomeningeal vessels; Type 3,the combined collateral blood flow of Type 1 and Type 2.The relationship between the patterns of intracerebral collateral blood flow and the location of HVS was analyzed.Results Of 41 adult patients with non-hemorrhagic MMD,there were 3 patients presented with unilateral vascular lesions and 38 with bilateral vascular lesions,so the total number of vascular lesions of the cerebral hemispheres was 79.Because three patients showed the absence of HVS in bilateral hemispheres,the total number of the presence of HVS of the cerebral hemispheres was 73.Therefore,the percentage of the presence of HVS was 92.4% (73/79) in vascular lesions of the cerebral hemispheres.Importantly,the patterns of slow collateral blood flow corresponding to Grade 1 HVS were all antegrade (7/7) ; the collateral patterns corresponding to Grade 2 HVS were mainly retrograde leptomeningeal flow (95.0%,19/20) ; and the patterns corresponding to Grade 3 HVS were mainly slow combined collateral blood flow(84.8%,39/46).Furthermore,with the changing sites of HVS from the cerebral sulci of temporal lobe to the cerebral sulci of frontal and parietal lobe regions,the directions of collateral flow changed with a shift from antegrade to retrograde,which was statistically significant.Conclusion The different locations of HVS can reflect the different patterns of collateral blood flow,and the locations of HVS may predict the directions of intracerebral collateral blood flow in adult MMD patients.

8.
Chinese Journal of Neurology ; (12): 174-178, 2012.
Article in Chinese | WPRIM | ID: wpr-428607

ABSTRACT

Objective To evaluate the prognostic value of hyperintense vessel (HV) in patients with acute middle cerebral artery (MCA) occlusion.Methods Seventy-four consecutive patients with first ever stroke(48 male and 26 female,the mean age was (60.7 ± 15.3) years) in the territory of MCA,retrieved from Nanjing Stroke Registry Program between May 2009 and February 2011,were enrolled assubjects.All subjects completed brain MRI,and MRA or DSA indicated proximal MCA occlusion.According to the location and extent of HV,all subjects were classified into 3 groups:without HV,proximal HV and distal HV.Clinical data were obtained and compared among patients with different grades of HV.Logistic regression analysis was employed to confirm the relevant factors of prognosis 90 days after index stroke.Results HV was observed in 49 (66.2% ) of the 74 enrolled patients.Among patients with HV,7 (9.4% ) were classified as proximal HV and 42 ( 56.8% ) as distal HV.Initial NIHSS score ( 11 ( 1 -22) ),10-day NIHSS score ( 13.5(4-25) ),infarction size ( >2/3:5 cases(6.8% ) ),and 90-day mRSscore (3-6 scores:12 cases( 16.2% )) were significantly lower in patients with distal HV than those without (15(6-25),Z=-3.544;7(0-22),Z=-4.461;20 cases(27.0%),x2 =20.916;27 cases (36.5%),x2 =22.689;all P<0.01).The NIHSS score decreased from baseline to that on 10 days and the mRS score decreased from 10 days to that on 90 days in patients with distal HV was more than that in patients without distal HV. Multivariate analysis revealed that patients with older age ( OR =1.111,95% CI 1.036-1.191,P=0.003),high infarction size (OR=3.679,95% CI 1.35-10.025,P=0.011) worsened outcome,whereas distal HV (P =0.012,OR =0.131,95% CI 0.027-0.638)improved outcome.Conclusion Distal HV on FLAIR may predict a favorable outcome in patients with acute middle cerebral artery occlusion.

9.
International Journal of Surgery ; (12): 163-165, 2012.
Article in Chinese | WPRIM | ID: wpr-425221

ABSTRACT

ObjectiveTo analyze the reasons of complications after laparoscopic gastrectomy with D2.MethodsThe clinical courses of 150 cases who suffered from gastric cancer treated by laparoscopy in the First Affiliated Hospital of Yangzhou University from March 2007 to December 2010 were retrospectively analyzed.ResultsFourteen cases showed complications after operation,the rate being 9.33% (14/150).The remaining patients with postoperative complications were discharged after treatment,no death occurred during the perioperation.ConclusionEnhancing the refinement of surgical operations,the postoperative observation and the management of drainage tube are the key to the prevention and treatment of complications after laparoscopic gastrectomy.

10.
International Journal of Surgery ; (12): 526-529,封3, 2012.
Article in Chinese | WPRIM | ID: wpr-598064

ABSTRACT

Objective To explore the differential level of hypermethylated SFRP2 gene in colorectal cancers andadjacent nontumorous tissues,to analyze the relation of SFRP2 gene promoter hypermethylation status and its clinicopathologic significance in colorectal carcinoma,and to study the relationship between the level of hypermethylated SFRP2 and the invasion and metastasis of colorectal carcinoma.Methods Real-time quantitative PCR technique was performed to analyze the level of hypermethylated SFRP2 gene promoter in colorectal cancers and adjacent nontumorous tissues taken from 30 colorectal cancer patients.The relation of the level of hypermethylated SFRP2 gene promoter and its clinicopathologic features of colorectal cancers was analyzed.Results SFRP2 gene promoter hypermethylation occurred in both the tumor tissues and the adjacent tissues.The level of SFRP2 gene promoter hypermethylation was significantly higher in the patients with TNM Ⅲ and Ⅳ (7.24 ± 1.13)than in patients with TNM Ⅰ and Ⅱ ( 5.92 ± 0.97 ) ( P < 0.05 ).The level of SFRP2 gene promoter hypermethylation was significantly higher in the patients with lower differentiation(7.31 ± 1.11 ) than in patients with higher differentiation (6.23 ± 1.03) ( P < 0.05 ).No significant association was found between the level of SFRP2 gene promoter hypermethylation and the status of gender,age.tumor location and tumor size ( P > 0.05 ).Conclusions SFRP2 gene hypermethylation in tissues may be a useful objective parameter for the malignant level,invasion,metastasis,recurrence and prognosis of the colorectal cancer.

11.
Chinese Journal of Endocrine Surgery ; (6): 30-33, 2011.
Article in Chinese | WPRIM | ID: wpr-621938

ABSTRACT

Objective To study the effect of the MafA therapy for blood slucose control in diabetic rats.Methods Rats were divided into 3 groups:treatment group,DM group and control group.In DM group,Wistar rats were rendered diabetic by intrvenous injection of streptozotocin(STZ).In treatment group,mixture of MafA and liposomes at the volume ratio of 1:1 was injected to the portal vein of the diabetic rats.Blood glucose change in the diabetic rats Was measured.Results ① For treatment group,blood slucose decreased from 20.6 mmol/L-22.8 mmol/L to 13.6 mmol/L-14.8 mmol/L and plasma insulin level was significantly elevated for a duration about 2 weeks.②After treatment,blood slucose level significantly decreased compared to DM group (P<0.05).③ Plasma insulin level Was significantly higher than that in DM group(P<0.05).④ Expression of MafA mRNA can be detected in the liver oftreatment group while it Was not found in DM group.Immunohistochemical analysis revealed that insulin expression Was found in the liver of treatment group while it Was not found in the liver of DM group.Conclusion Injection of MafA and liposomes at the volume ratio of 1:1 via the portal vein can effectively decrease blood glucose in diabetic rats.

12.
International Journal of Cerebrovascular Diseases ; (12): 811-817, 2011.
Article in Chinese | WPRIM | ID: wpr-423394

ABSTRACT

Objective To investigate the efficacy of endovascular stenting complicating other craniocervical artery stenosis (OCAS) in patients with atherosclerotic subclavian artery stenosis/occlusion (SASO).Methods The clinical data of receiving endovascular stenting therapy in patients with atherosclerotic SASO were analyzed retrospectively,including demographic characteristics,vascular risk factors,complicating OCAS,as well as stenting for SASO and follow-up results.Results A total of 65 patients with SASO were included in the study,47 of them were males and 18 were females (mean age of 64 ± 9 years).Forty-six patients (70.8% ) complicated OCAS.The overall technical success rate was 95.4%,in which the patients with stenosis (n =58) were 98.1% and those with complete occlusion (n =7) were 71.4%.The complications occurred in 4 patients.There were no intervention-related serious stroke and death.Mean follow-up was 24 ± 19 months,6 patients with restenosis and 10 with clinically relevant events were found.They mainly occurred in patients with OCAS.The first angioplasty patency rates were 94.5%,81.8% and 81.8%,respectively at 12 and 24 months after procedure and at the end of follow-up.The survival rates of no clinically relevant events were 92.9%,74.6% and 68.3%,respectively.Conclusions Endovascular stenting can safely and effectively treat the SASO patients complicating OCAS.Its overall clinical outcome may be affected to some extent by OCAS.

13.
International Journal of Cerebrovascular Diseases ; (12): 841-844, 2011.
Article in Chinese | WPRIM | ID: wpr-423298

ABSTRACT

Clopidogrel is an antiplatelet drug widely used in clinical practice now.It has been used as the secondary prevention medication for myocardial infarction,ischemic stroke,and peripheral vascular disease.However,the anti-platelet aggregation effect of clopidogrel has significant individual differences.A large part of patients have clopidogrel resistance phenomenon.The mechanism of clopidogrel resistance is not fully understood.The genetic polymorphism is an important cause of clopidogrel resistance,including ABCB1,CYP2C19,CYP3A4,CYP3A5,P2Y12,and ITGB3.

14.
Chinese Journal of General Surgery ; (12): 480-483, 2010.
Article in Chinese | WPRIM | ID: wpr-389494

ABSTRACT

Objective To analyze the relation of hypermethylated secreted frizzled-related protein 2 (SFRP2) gene in feces and peripheral blood of colorectal cancer(CRC) patient with Dukes stages and histological types,and to evaluate SFRP2 gene for screening and judging the pathogenetic condition of CRC.Methmls Methylation-specific PCR assay was performed to analyze SFRP2 gene promoter methylation status in a blinded fashion in tumor tissues,stool and pefipheral blood samples taken from 169 CRC patients,63 patients with adenoma,46 with hyperplastic polyp and 30 endoscopically normal subjects.Results SFRP2 gene Was hypermethylated in 88.2%.65.1%and 45.7% of CRC.adenoma and non-adenomatous polyp tissues,in 84.0%,46.0% and 32.6%of corresponding fecal samples,and in 66.9%,6.4%and 2.2% of corresponding peripheral blood samples,respectively.In contrast,no methylated SFRP2 gene was detected in mucosal tissues and peripheral blood of normal controls,while two cases of matched fecal samples from normal controls were detected with hypermethylated SFRP2.Moreover,no significant correlation were observed between SFRP2 hypermethylation and clinicopathological features including sex,age,size,location and Dukes stage,but there was a significant correlation between SFRP2 hypermethylation and tumor difierentiation and infiltration.SFRP2 hypermethylation in peripheral blood of CRC patients was positively correlated with the Dukes stage. Condusions Hypermethylation of SFRP2 gene in feces works as a molecular biomarker for CRC screening.The hypermethylation of SFRP2 gene is positively related with Dukes stage.

15.
Chinese Journal of Emergency Medicine ; (12): 1258-1261, 2010.
Article in Chinese | WPRIM | ID: wpr-385206

ABSTRACT

Objective To summarize the clinical experience of endovascular intervention for intra-cranial aneurysms, especially in the respect of the technique and management of intra-operative complications. Method The clinical data of 60 patients with intra-cranial aneurysms treated with endovascular intervention in the past 3 years were analyzed. The relevant literature especially with regard to the practical technique described was reviewed so as to potentiall minimize and properly manage the intra-operative complications. Results A total of 69 sacciform aneurysms and one dissecting aneurysm located at left vertebral artery (VA) were detected by using digital subtraction angiography (DSA) in 60 patients. There were 65 saccular aneurysms obliterated with constructive approach, and five of them treated with stent-assisted technique and four of them treated with ballon-assisted technique. The VA dissecting aneurysm was obliterated with coils by deconstructive approach with complete occlusion of its parent vessel. There were a total of 53 complete occlusions of aneurysms accounted for 76.81% of 69 sacciform aneurysms in 51 patients ( 85 % ) and eight subtotal occlusion of aneurysms (95 % ~ 99 % occlusion) accounted for 13.56% of total sacciform aneurysms in five patients (8.47%) and four incomplete occlusion of aneurysms ( < 95% occlusion) accounted for 6.78% of total sacciform aneurysms in three patients (5.08%), and one was failure in operation. The rupture of aneurysms occurred during operation in4 patients (6.78%). Two senile patients suffered from intra-opeartive symptomatic thromboembolisn. One patient had stent shifting and spring coil dislocated and moved into the M3 segment of the ipsilateral MCA. Vasospasm occurred in 15 patients during operation, and most of them received endovascular intervention 3 days after the initial ictus. The rate of good recovery was 93.3% at discharge from hospital (the modified Rankin Scales, mRS< 2). There were 55 patients followed up for up 24 months after discharge, and excellent recovery rate was found in 51 patients ( mRS < 2), and 3 died.During the follow-up period, no aneurismal recanalization or rupture was noticed in all patients. Conclusions The endovascular intervention is a safe and effective approach to the intra = cranial aneurysms. Advances in the skill of technique and proper management will decrease the complications during operation and improve the prognosis of patients.

16.
Cancer Research and Clinic ; (6): 862-864, 2010.
Article in Chinese | WPRIM | ID: wpr-382883

ABSTRACT

With the development of epigenetics, more and more studies have confirmed that DNA methylation is closely related with the tumorigenesis. Secreted frizzled-related protein (sFRP) gene methylation can result in the silence of gene expression, decrease in the inhibition of the Wnt signal pathway and promoting the occurrence and progress of tumor, especially in the colorectal cancer. When the function of sFRP recover, the activity of Wnt signal pathway is inhibited, thereby inhibiting formation and progress of tumor and promoting apoptosis of tumor cell. sFRP gene family methylation is closely related with the occurrence and progress of colorectal cancer. Therefore, the detection of SFRPs methy]ation is expected to be a new way for colorectal cancer early screening.

17.
Acta Anatomica Sinica ; (6)2002.
Article in Chinese | WPRIM | ID: wpr-577463

ABSTRACT

Objective To explore whether ginsenoside Rg1 can attenuate ?-amyloid peptide 25-35-induced Tau hyperphosporylation in rat embryo cortical neurons by regulating the activity of GSK-3? and PP2A. Methods Primary cultures of cortical neurons were prepared from the embryonic day 18?2 in Sprague-Dawley rats. The experimental groups were designed as follows:1.Neurons culture (control group); 2. Neurons exposed to 20?mol/L A?_ 25-35 for 12 hours (A?-model group); 3.Neurons exposed to 20?mol/L A?_ 25-35 and 10 mmol/L lithium chloride (LiCl), a specific inhibitor of glycogen synthase kinase-3?(GSK-3?), for 12 hours (LiCl group); 4.Neurons exposed to 20?mol/L A?_ 25-35 for 12 hours in the presence of 24-hour pretreatment with ginsenoside Rg1 (Rg1 pretreatment group) . Western blotting and immunocytochemical staining were used to detect the levels of Tau phosphorylation,total Tau and GSK-3? in cortical neurons. Non-radioimmunoassay was introduced to detect the activity of protein phosphatase 2A (PP2A). Results In A?-model group, the levels of Tau protein phosphorylation in the sites of Ser 396 ,Ser 199/202 ,Thr 231 and total Tau were enhanced. Meanwhile, the expression of GSK-3? was also increased, but the activity of PP2A was unchanged. In LiCl group and Rg1 pretreatment group , the hyperposphorylations of Tau protein and total Tau and the expression of GSK-3? were markedly reduced compared to those of the A?-model group (P

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