1.Current situation and development trend of POCT in cardiovascular disease
Chinese Journal of Laboratory Medicine 2013;(6):494-497
Cardiovascular disease (CVD) is one of the most common diseases and the leading causes of death in China.It is of great importance to detect cardiac markers for early diagnosis,treatment and prognosis of CVD.Point of care testing (POCT) is emerging as a new test mode and development trend of laboratory medicine.Application of POCT technology in cardiovascular field is the fastest growing parts of all POCT.It promotes the application and development of POCT because of the contradiction between the important value of cardiac markers and the needs of quick results in severe CVD.With the technological diversification of POCT,the progressing innovation of test devise and standardized test results with reference to the Central Laboratory (CLT),the application of POCT will be more extensive and promote the development of laboratory medicine together with traditional test mode.
2.Value of low doses of gemcitabine chemotherapy combined with high-low oxygen radiotherapy synchronously for therapy of patients with locally advanced pancreatic cancer
Zhaojun DING ; Yanwei SUN ; Xiping CHEN ; Yongheng AN
Chinese Journal of Pancreatology 2012;12(3):153-155
Objective To evaluate the efficacy and adverse effects of low doses gemcitabine chemotherapy combined with synchronous high-low oxygen radiotherapy in patients with locally advanced pancreatic cancer.Methods Fifty-six patients with locally advanced pancreatic cancer were randomly divided into two groups by envelop method:radio-chemotherapy group or chemotherapy group.Patients in radio-chmotherapy group were treated with low doses of gemcitabine chemotherapy ( 600 mg/m2 ) combined with high-low oxygen radiotherapy synchronously,paients in chmotherapy group were treated with full doses of gemcitabine chemotherapy ( 1000 mg/m2).The short-term effect,distant metastasis rate,clinical benefit rate,survival rate and adverse events of two groups were observed.Results There was one patient achievedcomplete relief and 15 patients achieved partial relief in radio-chemotherapy group with an overall effective rate of 66.7% (16/24) ; there were 9 patients achieved partial relief in chemotherapy group with an overall effective rate of 36.0% (9/25),the difference between the two groups was statistically significant (X2 =4.6082,P =0.0318 ).The clinical benefit rates were 83.3 % ( 20/24 ) and 60% ( 15/25 ),respectively,the difference between the two groups was not statistically significant ( P =0.070).The distant metastasis rates were 66.7%(16/24) and 72% (18/25),respectively,the difference between the two groups was not statistically significant (P =0.6855).The 12,24 months survival rates were 62.5% vs 32%,37.5% vs 12%,the difference between the two groups was statistically significant ( P =0.0325,0.0380).The incidence of serious adverse events was 45.8% and 4 0 % without statistical difference.Conclusions Low doses of gemcitabine chemotherapy combined with high-low oxygen radiotherapy synchronously is better than full doses of gemcitabine chemotherapy with regard to total effective rates and 12,24 months survival rates,with no obvious increase in the incidence of serious adverse events.
3.Determination of baicalin in the children's Yffei-Pingchuan mixture by RP-HPLC
Zhaojun CHEN ; Zhong LI ; Hui JIN
International Journal of Traditional Chinese Medicine 2011;33(10):900-902
Objective To establish the determination method of baicalin in the children's YifeiPingchuan mixture by RP-HPLC.Methods A Kromasil C18 column was used with methanol-(0.4%)phosphoric acid-triethylamine (45 ∶ 55 ∶ 2 drops) as mobile phase with a column temperature of 28 ℃.The flow rate was 1.0 ml/min.The detection wavelength was set at 277 nm.Results The linear range of baicalin was 0.040~1.000 μg (r=0.9999) with a average recovery of 99.82 and RSD of 1.01%.Conclusion The method for quantification of baicalin was sensitive,accurate,and convenient,which can also be used as one of basis of quality standard for Yifei-Pingchuan mixture.
4.Application of the displacement of the ventricular bands-epiglottis mucosalflap in the surgical management of glottis carcinoma
Lili CHEN ; Zhaojun QIN ; Changwen DAI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2009;(18):826-827
Objective:To investigate the plastic method of glottis carcinoma in surgery. Method:Retrospectly analyzed 29 patients with T_2 ,T_3 glottis carcinoma who admited in our department From 1996 to 2004. All of them were treated with the displacement of ventricular bands-epiglottis mucosal flap in the surgical management of glot-tis carcinoma. The tumour was primarily from vocal cords, and not exceeded 2cm. Result: All cases were success-fully renovated laryngeal cavity with the displacement of ventricular bands-epiglottis mucosal flap and followed up for 5 years after operation. Three years survival rate was 86.2% ,5 years survival rate was 78.9% ,and tube draw-ing rate was 100%. Conclusion: With this method, surgery would be simplified and the patients would keep the voiced function and swallowing function.
5.Effect of lobe bronchus blockade on intrapulmonary shunt during radical esophagus cancer resection
Chuanhan ZHANG ; Zhaojun CHEN ; Peng WANG
Chinese Journal of Anesthesiology 1995;0(02):-
Objective To evaluate the effect of lobe bronchus blockade with a branchial blocker on intrapulmonary shunt during radical esophagus cancer resection. Methods Twenty four ASA Ⅰ-Ⅲ patients with normal lung function aged 18-69 yrs undergoing elective radical esophagus cancer resection were randomized into 2 groups ( n = 12 each): group A one-lung ventilation (OLV) and group B lobe bronchus blockode. Radial artery and right internal jugular vein were cannulated for BP and CVP monitoring and blood sampling. Anesthesia was induced with midazolam 50 ?g?kg-1, fentanyl 4 ?g?kg-1, propofol 2 mg?kg-1 and vecuronium 0.1 mg?kg-1. In group A double-lumen tube (DLT) was used while in group B a single lumen endotracheal tube was placed first, then a bronchial blocker was inserted fiberoptically into the bronchus of lower lobe of the operated side. The patients were mechanically ventilated (FiO2= 100%, VT = 8 ml?kg-1 , RR = 10-15 bpm, I: E = 1:2). PaCO2 was maintained at 30-35 mm Hg. Anesthesia was maintained with 1.5%-2.0% isoflurane and intermittent Ⅳ boluses of fentanyl and vecuronium. BP, HR, CVP, SpO2, PETCO2 and airway pressure were monitored during operation. Blood samples were taken simultaneously from radial artery and central vein for blood gas analysis before induction of anesthesia when the patients were lying supine and breathing spontaneously (T0), after the lungs on both sides were ventilated for 30 min in lateral position (T1) and 30 min after OLV (group A) or lower lobe bronchus was blocked off (group B) in lateral position (T2). Qs/Qt was calculated (blood from central vein was used instead of mixed venous blood from pulmonary artery) . Blood concentrations of TXB2 and 6-k-PGF1 were determined by radioimmunoassay at T0, T1 and T2. Results There was no significant difference in demographic data between the two groups. At T2 the airway pressure in group A was significantly higher than that in group B. At T2 PaO2 was significantly higher in group B than in group A. Qs/Qt was significantly increased at T1 and T2 as compared to the baselines in both groups. Qs/Qt was significantly increased at T2 compared to that at T1 in group A only, while there was no significant difference between Qs/Qt at T1 and T2 in group B. The TXB2 concentration at T2 was significantly increased as compared to that at T0 and T1 in group A and was significantly higher than that at T2 in group B. Conclusion Lower lobe bronchus blockade was superior to OLV in terms of Qs/Qt and PaO2 during esophagus cancer resection.
6.Application and development of point-of-care testing in domain of tumor markers
Lahong ZHANG ; Yuhua LIU ; Zhaojun CHEN
Chinese Journal of Laboratory Medicine 2014;(11):808-811
Malignant tumors are the most common lethal diseases in China.Because of complexity of etiology and pathogenesis , and the lack of specific markers for early diagnosis , delayed diagnosis and treatment of cancer , the fatality rate is high.With the development of basic research , more and more early specific markers were found , but the current detection mostly depend on the professional laboratories , time-consuming , high price and have a number of inconveniences to patients on time and money.Meanwhile , it′s difficult to extend to zoon of medicine resources deficient.Recently, point-of-care testing (POCT) has been rapidly developed , because of its portability , getting results quickly , can be operated in basic medical units and economic backward areas , so it′s benefit to cancer screening in human.By the application in tumor markers, POCT can be done for the cancer early detection , early diagnosis and early treatment , so then cuts the death rate.
7.Detection of DD3 mRNA level in peripheral blood of patients with prostate cancer and its clinical value
Yanlan BAO ; Xiao YANG ; Zhaojun CHEN
Chinese Journal of Primary Medicine and Pharmacy 2017;24(18):2756-2759
Objective To study the level and clinical value of differential display code 3 (DD3) in peripheral blood of patients with prostate cancer.Methods 27 patients with prostate cancer from April 2014 to April 2015 in Affiliated Hospital of Hangzhou Normal University were researched.26 patients with non prostate diseases were selected as control group.DD3 mRNA levels were detected in peripheral blood of all patients.DD3 absorbance value of three groups of patients,the relationship between the relative content of DD3 mRNA and the clinical characteristics of prostate cancer,DD3 mRNA in urine and peripheral blood of patients with prostate cancer and benign prostatic hyperplasia were observed.Results In the patients with benign hyperplasia of prostate and non prostate diseases,a total of 4 patients did not appear to be DD3 specific bands.In prostate cancer patients,all patients were found to have DD3 specific bands.The relative content of patients with non prostate diseases was (0.18 ± 0.05) copies/mL.The relative content of benign prostatic hyperplasia patients was (0.30 ± 0.09) copies/mL.The relative content of prostate cancer patients was (0.78 ± 0.23) copies/mL.The positive expression rates of DD3 mRNA in peripheral blood and urine of patients with prostate cancer were 85.18% (23/27),51.85% (14/27),respectively,which were significantly higher than those in patients with benign prostatic hyperplasia[21.42% (6/28),7.14% (2/27)] (x2 =22.416,13.319,all P < 0.05).Conclusion The specific expression of DD3 mRNA in peripheral blood of patients with prostate cancer can be used as an effective basis for judging the patients' condition,and it has certain value for the treatment and prognosis of patients with prostate cancer.
8.Nerve growth factor promotes proliferation of human pancreatic cancer cell line MIA PaCa-2
Lingxin MENG ; Zhaojun DING ; Xiping CHEN ; Hong ZHANG ; Yuhua CHI
Chinese Journal of Cancer Biotherapy 2010;17(1):88-92
Objective: To investigate the effect of nerve growth factor-β(NGF-β) on the proliferation and cell cycle of human pancreatic cancer MIA PaCa-2 cells. Methods: MIA PaCa-2 cells were treated with different concentrations of NGF-β and K252a (inhibitor of NGF-β receptor TrKA) alone or in combination. Clone forming rate, proliferation, and cell cycle of MIA PaCa-2 cells treated with different strategies were examined by clone formation assay, MTT, and flow cytometry, respectively. Results: NGF-β significantly increased the clone formation and proliferation of MIA PaCa-2 cells (P<0.05, P<0.01). K252a significantly inhibited the proliferation of MIA PaCa-2 cells (P<0.05), while NGF-β combined with K252a had no significant effect on the proliferation of MIA PaCa-2 cells. NGF-β arrested MIA PaCa-2 cell cycle in S phase, K252a arrested cell cycle in G_0/ G_1 phase, and NGF-β combined with K252a arrested cell cycle in S phase. Conclusion: NGF-β can enhance the proliferation of pancreatic carcinoma MIA PaCa-2 cells.
9.Investigation of the efficacy and safety of tirofiban in elderly patients with acute myocardial infarction referred for percutaneous coronary intervention
Zhaojun GUO ; Wu CHEN ; Maoqin HUANG ; Shaobo LI
Chinese Journal of Geriatrics 2010;29(3):203-207
Objective To evaluate the efficacy and safety of use of platelet membrane glycoprotein (GP) Ⅱ b/Ⅲ a inhibitor tirofiban for percutaneous coronary interventional (PCI) in elderly patients with acute ST segment elevation myocardial infarction (STEMI).Methods A total of 120 elderly patients who suffered from STEMI and underwent PCI were selected from July 2007 to November 2009.The patients were randomly assigned to control group, standard-dose tirofiban group and low-dose tirofiban group.We observed coronary blood reflow, the bleeding complication, coagulation factor(TF,vWF) and cell adhesion molecular(sICAM-1 and sVCAM-1).Results Total 116 patients accomplished this study (control group: 38 cases; standard-dose group: 39 cases; low-dose: 39 cases).The percentages of TIMI 3 flow after PCI were higher in the two tirofiban groups than in control group (P<0.05).The incidences of bleeding complications in both tirofiban groups (12.8%,5.1%) were higher than that in control group (2.6%, P<0.05).The concentration of TF, vWF,sICAM-1 and sVCAM-1 were lower in both tirofiban groups than in control group(P< 0.05).Conclusions GP Ⅱ b/Ⅲ a inhibitor tirofiban can benefit the elderly patients with STEMI referred for PCI therapy, low-dose tirofiban may offer almost the same level of efficacy as standard-dose, with less associated bleeding.
10.A study on autonomic nerve function of coronary heart disease patients with panic disorder
Zhaojun CHEN ; Xishan YANG ; Pingshuan DONG ; Zhijuan LI ; Ke WANG
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(3):247-249
Objective To investigate the changes of autonomic nerve function of coronary heart disease (CHD) patients with panic disorder(PD). Methods All the subjects who met with the diagnostic code of CHD and PD were divided into CHD group(n=40) ,PD group(n=36) ,comorbid CHD and PD group(n=27) ,and 40physical examinee were recruited as normal control group. They had a 24 hours Holter ECG monitoring by time and frequency domain analysis of heart rate variability. ANOVA analysis was utilized to statistic the collected data. Results Compared with normal controls,the patients of others groups had every indexs of HRV were reduced. The indexs of HRV of comorbid CHD and PD were lower than the patients of CHD or PD group. The score of time domain SDNN(70.40 ± 14.74)ms,SDANN(91.72 ± 24.46)ms,PNN50(2.83 ±2.07)%, RMSSD( 15.66 ±7.45)ms,frequency domain LF(647.54 ± 129.24)ms2, HF(596. 16± 127.66) ms2 in comorbid CHD and PD. There were significant differences with others groups(P < 0.05 ). Conclusion The autonomic nervous functional of the patients with CHD and PD were in disorder. The autonomic nervous functional disorder of the patients with comorbid CHD and PD was more severe.