1.Experiment in effect of jiangtang zhongyao No.1 on islet cell secretion in vitro
Chinese Journal of Tissue Engineering Research 2005;9(43):186-187
BACKGROUND: On bases of preceding study on jiangtang zhongyao No.1 (glucose-reducing No. 1), the experiment was performed in its effect on promotion of insulin secretion of islet cells in vitro.OBJECTIVE: To explore the mechanism of glucose-reducing No.1 so as to provide the scientific evidence for clinical experiment.DESIGN: Neonatal porcine islet cells were collected for generative culture to observe the effect of glucose-reducing No.1 on insulin secretion of islet cells cultured in vitro.SETTING: Department of Pathology of Shandong Province Hospital and Neurological Department of Shangdong Province Hospital of Shandong University.MATERIALS: The experiment was performed in Research Room of Chinese Herbal Pharmacology in Shandong Academy of Medical Sciences, in which, American neonatal pig was selected as the object.METHODS: The obtained neonatal porcine islet cells were randomized into 5 groups, 3 bottles in each group. In culture solution group, the culture solution of equal volume was added. In daonil group, daonil 4 nmol/L was added and in glucose-reducing No.1 0.2 mL, 0.15 mL and 0.1 mL groups, the filter solution of glucose-reducing No.1 0.2 mL, 0.15 mL and 0.1 mL were added successively. The samples in each group were incubated in culture box for 3 hours, and then the upper clear solution was collected to assay insulin content with radioimmunoassay (RIA).MAIN OUTCOME MEASURES: Comparison of active components of islet cells in each group.RESULTS: In basic culture solution, insulin levels were not different significantly among groups. The release amounts in glucose-reducing No. 10.2 mL, 0.15 mL and 0.1 mL groups were increased compared with insulin content in basic culture solution [(784.72±81.25), (462.25 ±14.91);(711.73±91.46), (467.62±15.56); (679.40±78.84), (475.82±13.33) mU/L],and multiple proportion relationship was not obvious with dosage of Chinese herb. In daonil group, insulin secretion was increased significantly [(857.96±77.08), (470.58±15.43) mU/L].CONCLUSION: Jiangtang zhongyao No.1 simulates islet cells to increase significantly the secreted amount of insulin so that the glucose is well reduced.
2.Dendritic cell-based immunotherapy for malignant lymphoma
Li LIU ; Zhenfang FAN ; Xuejun ZHU
Journal of Leukemia & Lymphoma 2009;18(8):502-505
Due to therapeutic regimens for patients with malignant lymphoma (ML) is currently unsatisfactory, it is important to develop new complementary therapies for longer disease-free survival. Dendritic cells (DC) are specialized antigen-presenting cells of immune system and vaccination with tumor antigen-pulsed DC has been applied to treat patients for ML. In this review, we summarize various types of ML-associated antigens and clinical trials on DC-based immunotherapy in ML, and discuss the development of DC immunotherapy for ML patients in future.
3.Techniques of performances improvement of LED light source for instruments
Zhenfang LIU ; Yaping HU ; Wenchao ZHANG
Chinese Medical Equipment Journal 1989;0(04):-
This paper introduces the principle and characteristics of the LED constant-current and constant-power drive circuit for instrument's excitation light source.It also analyzes the steady-state and dynamic performances of the drive circuits.At last,it discusses the improving measures of the precision and stability for the drive circuit of LED excitation light source.
4.Study on peritoneal micrometastasis by detection of CEA in peritoneal lavage fluit in patients underwent laparoscopy-assisted radical gastrectomy
Hongbin LIU ; Zhenfang LIU ; Xiaopeng HAN ; Wankun ZHU ; Lin SU
Clinical Medicine of China 2010;26(7):676-678
Objective To assess the change of CEA in the peritoneal lavage fluit at pre-,post-laparoscopy-assisted radical gastrectomy, and after hyperthermic perfusion chemotherapy, and to investigate the influence of laparoscopy-assisted radical gastrectomy on drop off of cancer cells, the efficiency of hyperthermic perfusion chemotherapy. To investigate whether CEA in the peritoneal lavage fluit detected by flow cytometry (FCM) is an effective predictor of intraperitoneal free cancer cells and peritoneal metastasis. Methods Peritoneal washings of 40 patients with gastric carcinoma were collected to detect CEA using FCM. The peritoneal lavage cytology examinations ( PLC)were detected by H-E staining. Results Laparoscopic surgery in patients with gastric cancer,before resection of gastric cancer the peritoneal washing CEA positive rate 35. 0% (14/40) ,and after operation, the positive rate was 40. 0% ( 16/40) .which was not significantly higher than that before operation ( P > 0. 05 ). After intraperitoneal hyperthermic perfusion chemotherapy the CEA positive rate was 7. 5% (3/40) ,which was significantly lower than that pre-operation(P<0. 05). Before operation there were 4 cases of positive PLC in the peritoneal lavage fluid, 14 CEA-positive detected by flow cytometry, and there was significant difference ( P < 0. 05 ) . All PLC-positive cases were positive for CEA, whereas 10 PLC-negative cases showed CEA-positive. None of CEA-negative cases showed PLC-positive. Conclusions Laparoscopic radical gastrectomy does not increase the intra-abdominal gastric cancer cell shedding. Intraoperative hyperthermic perfusion chemotherapy is simple and feasible approach with high efficiency.Peritoneal washing CEA detected by flow cytometry is an effective index to predictor for intraperitoneal free cancer cells and prediction of peritoneal metastasis.
5.Comparative Study on Detection of Peritoneal Free Cancer Cells of Gastric Surgery
Zhenfang LIU ; Xiaopeng HAN ; Hongbin LIU ; Wankun ZHU ; Lin SU
Chinese Journal of Bases and Clinics in General Surgery 2008;0(08):-
Objective To investigate the detection of peritoneal free cancer cells and its clinical significance. Methods The peritoneal free cancer cells,the positive rates of CK20 protein and CK20 mRNA expressions of peritoneal lavage fluid were detected by peritoneal lavage cytology (PLC),flow cytometry (FCM) and real-time fluorescent quantitative RT-PCR in 50 cases of gastric cancer patients,respectively. The sensitivity of three kinds of detection method to peritoneal free cancer cells was compared. Results The positive rates of peritoneal free cancer cells,CK20 protein and mRNA expression of peritoneal lavage fluid were 20.0% (10/50),36.0% (18/50) and 58.0% (29/50),respectively. The positive rate of CK20 mRNA expression detected by real-time fluorescencequantitative RT-PCR in peritoneal lavage fluid was significantly higher than those of the CK20 protein expression detected by FCM and peritoneal free cancer cells detected by PLC (P0.05). The positive rate of CK20 mRNA expression of peritoneal lavage fluid was related to the tumor invasion depth,differentiation degree,TNM stage,and lymph node metastasis (P
6.Comparative Study on the Peritoneal Lavage Cytology during Radical Resection of Gastric Cancer
Hongbin LIU ; Zhenfang LIU ; Xiaopeng HAN ; Wangkun ZHU ; Lin SU
Journal of Medical Research 2006;0(05):-
Objective To study the significance of repeated washing in reducing the positive rate of intra-abdominal exfoliated cancer cells. Methods Sequential intraoperative peritoneal lavages were performed in each of the 160 patients with gastric cancer one time before tumor resection,three times after excision.Four sub-peritoneal washing fluid was assayed for cytology smears with routine pathology.The results were then compared. Results Exfoliated tumor cells were positive in the intraoperative peritoneal lavages of 56 patients before resention.Exfoliated tumor cells were positive in the first three intraoperative peritoneal lavages of 64 patients before resention,42 at the second,3 at the third.Tumor cells positive and forward setting lotion shed after the first time,with the number of detected cases increased but had no significant statistical significance.Compaving the positive result of the 3rd exfoliated cancer cells with the first 1,we found that the difference was statistically significant. Conclusion Sequential intraoperative peritoneal lavages is an useful method in reducing the positive rate of peritoneal exfoliated tumor cells in patients with gastric cancer.
7.Investigation of the value of multi-slice CT perfusion imaging on brain hemodynamic in patients with cerebral infarction
Zhenhua LIU ; Yifeng DU ; Jingguang LV ; Lin LU ; Xiao MAN ; Jianping CHEN ; Zhenfang LIU
Chinese Journal of Geriatrics 2011;30(6):452-454
Objective To study the value of CT perfusion imaging(CTPI)on brain hemodynamic of the aged with cerebral infarction. Methods The 48 patients who were doubted with cerebral infarction underwent 16-slice CT plain scanning and CTPI within 24 hours of onset. The cerebral blood flow(CBF), mean transit time(MTT)and time to peak(TTP)of contrast-medium in region of interest(FOV)were used as brain hemodynamic parameters in comparation with contralateral regions. All cases were followed up with MRI after 3-10 days. Results Ischemia lesion was found on CT plain scanning in 40.9% of patients, while 93.2% of patients showed abnormal perfusion on CTPI. The sensibility of CTPI in identifying ischemia area was 93.2%, and the specificity was 100%. CBF in research area was significantly reduced, MTT and TTP were remarkably increased in contrast to counterparts(P<0.01). Conclusions CT perfusion imaging can sensitively reveal the hemodynamic condition of cerebral ischemia, which could provide the important information for early diagnosis and treatment of the elderly with brain infarction.
8.Effects of butylphthalide post-processing on the XIAP and BNIP3 expressions in the hippocampus CA1 of focal cerebral ischemia reperfusion rats
Zhenfang QIU ; Chunying DENG ; Shiying LI ; Jinxia ZHANG ; Yonggui HE ; Hong YU ; Bin LIU
Journal of Medical Postgraduates 2015;(12):1257-1261
[Abstract ] Objective The purpose of this study was to observe the effects of dl-3n-butylphthalide (NBP) sodium chloride injection post-processing on the expressions of X-inhibitor of apoptosis (XIAP) and Bcl-2/adenovirus E1B19kDa interacting protein 3 (BNIP3) in the hippocampus CA1 neurons of focal cerebral ischemia reperfusion (IR) rats, and to investigate the brain-protection mechanisms of NBP. Methods A total of65 adult male Sprague-Dawley rats were divided into five groups of equal number, sham op-eration, IR, and low-,medium -and high-dose NBP, according to the random number table. The IR models were established by modified ligation of the middle cerebral artery.The animals in the NBP groups received intra-abdominal injection of NBP at 2, 4, and 6 mg/kg, re-spectively.All the rats were sacrificed at 24 hours after modeling,neurological scores obtained by Zea Longa, the volume of infarction measured by TTC staining, the number of apoptotic cells counted by TUNEL, and the expressions of XIAP and BNIP3 detected by immunohistochemistry and real-time PCR. Results The neural function defect scores were markedly lower in low-, medium-and high-dose NBP groups than in IR model rats (P<0.05), with statis-tically significant differences among the three dose groups (P<0.05).The volume of infarction was remarkably higher in the low-dose than in the medium-and high-dose NBP groups (P<0.05).The number of apoptotic cells in the hippocampus CA1 neurons was de-creased in the NBP groups as compared with the IR models (P<0.05).The XIAP-and BNIP3-positive cells were significantly in-creased in the IR model rats as compared with the sham operation group ([22.31 ±0.94] and [60.13 ±2.59]/HP vs [3.07 ±1.43] and [5.78 ±0.44]/HP, P<0.05).In comparison with the IR models, the NBP-treated rats showed a progressively increased number of XIAP-positive cells in low-, medium-, and high-dose groups ([28.70 ±1.18], [32.79 ±0.88], and [37.01 ±1.24]/HP) (P<0.05) but a decreased number of BNIP3-positive cells in the three dose groups ([52.07 ±1.02], [40.30 ±2.00], and [31.04 ± 0.43]/HP) (P<0.05).Similarly, the expression of XIAP mRNA was up-regulated while that of BNIP3 mRNA down-regulated in the NBP treatment groups as compared with the IR model rats, both in a dose-dependent manner (P<0.05). Conclusion NBP post-processing has a neuroprotective effect on IR rats, which is associated with its impact on the expressions of XIAP and BNIP3.
9.The effects between Supreme laryngeal mask airway and endotracheal intubation on stress reaction of eld-erly hypertensive patients treated with knee arthroplasty
Haishan ZHANG ; Dalong WANG ; Zhenfang ZUO ; Weipeng GE ; Zhongwei WANG ; Guanrong ZHENG ; Ke LIU ; Shuai WANG
The Journal of Clinical Anesthesiology 2014;(6):577-580
Objective To investigate the effects of supreme laryngeal mask airway (SLMA) and endotracheal intubation on the elderly hypertensive patients treated with knee arthroplasty. Methods Forty cases of elderly hypertensive patients ASA Ⅰ-Ⅲ treated with knee arthroplasty in our hospital were selected and randomly divided into laryngeal mask airway group (group LMA)and endotracheal intubation (group TT),20 cases for each group.The same protocol for induction and maintenance of general anesthesia was used.After the patients entering,the changes of SpO2 and ECG were performed continuous noninvasive monitoring and SBP,DBP and HR were performed con-tinuous invasive monitoring.SBP,DBP and HR of two groups were recorded at different time points:before anesthesia induction (T0 ,based value),at intubation immediate (T1 ),5 mins after intubation (T2 )and 1 5 mins after intubation (T3 ).At the same time,the content of cortisol (Cor),atrial natri-uretic peptide (ANP)and the concentration of epinephrine (E)and norepinephrine (NE)were meas-ured at the corresponding time points above.Results Compared with T0 ,SBP and DBP at T1-T3 in group LMA were decreased(P <0.05 or P <0.01);SBP and DBP at T1 in group TT were increased while decreased at T2 ,T3 ,HR at T1 were increased(P < 0.05 or P < 0.01 ).Compared with group LMA,SBP and DBP at T1-T3 and HR at T1 ,T2 in group TT were increased (P <0.05 or P <0.01). Compared with T0 and group LMA,the content of E,NE and Cor at T1-T3 increased(P <0.05 or P <0.01).The level of ANP in both groups at T1-T3 were higher than those at T0 ,and group TT were higher than group LMA(P <0.01).Conclusion Compared to endotracheal intubation,SLAM can ef-fectively reduce the stress reaction of elderly hypertensive patients treated with general anesthesia in knee arthroplasty.
10.Clinical pathological characteristics and prognostic factors of 17 carcinosarcomas in corpora uteri
Haiying LIU ; Guangzhang ZHAO ; Wei CUI ; Zhenfang GU ; Yang LI ; Wei LI
Chinese Journal of Primary Medicine and Pharmacy 2016;23(13):1942-1945
Objective To study the clinical pathological characteristics and prognostic factors of carcinosarcoma in corpora uteri.Methods Clinical data of 17 corpora uteri carcinosarcoma patitents diagnosed in Jining Medical University from June 2008 to December 2013 were analyzed.Results In 17 cases of uterine sarcoma,I had 3 cases, 4 cases of stageⅡ,8 cases of stage Ⅲ,and 1 case of stage Ⅳ.The overall survival rates of the 3 years and stage Ⅲ ~Ⅳ were 62.5% and 11.1%,respectively.The 3 -year survival rate was 100.0%,and the 5 -year survival rates of stageⅠ ~Ⅱ,Ⅲ ~Ⅳ were 37.5%,0.0%,respectively.Univariate analysis showed that the staging influenced the prognosis.Conclusion The prognosis of patients with uterine sarcoma is related to the surgical pathologic stage.