1.Optimizing extraction process of Chonglian oral solution by orthogonal test
Yongzhong WANG ; Lunzhu XIA ; Yirong FENG ; Li CHEN ; Mei MENG
Chinese Journal of Primary Medicine and Pharmacy 2011;18(4):436-438
ObjectiveTo optimize Chonglian oral solution extracting craft. MethodsWith the obtaining rate of extract and the total content of the Pariphyllin Ⅰ and Phillyrin presented in the extract as the indexes for the water extraction process,and with the total content of the Pariphyllin Ⅰ and Phillyrin presented in the extract as the indexes for the alcohol deposition process,orthogonal design was used to optimize the conditions for the extraction process respectively. ResultsThe optimal conditions for the water extraction of Chonglian oral solution was as following:to add water 10 times,decocting 3 times,1 hour each time.The optimal conditions for the alcohol deposition of Chonglian oral solution was as following:concentrated for the relative density to 1.10(80C hot test),cold,add ethanol to the solution for the ethanol content of the solution reached 80%,static settlement for 24 hours. ConclusionThe extracting method is reasonable,stable,and suitable to industrialized producting.
2.Effect of deferoxamine in treatment of chronic hydrocephalus after intravetricular hemorrhage in rats
Guoqi GONG ; Hui MENG ; Yongzhi XIA ; Hua FENG
Chinese Journal of Trauma 2010;26(11):1025-1029
Objective To discuss the effect of deferoxamine in the treatment of chronic hydrocephalus (CH) after intraventricular hemorrhage (IVH) in rats. Methods A total of 184 female Sprague Dawley rats were randomly divided into normal saline group ( NS group), intracerebroventricular blood infusion group (Group A ) and deferoxamine plus intracerebroventricular blood infusion group ( Group B). The rat CH models were made by infusing autologous whole blood ( 130 μl) into the right lateral cerebral ventricle. The escape latency time was detected by Morris water maze at days 14 and 28.The rats were sacrificed 1,3, 7, 14, 28 days later, the transverse diameter of the lateral ventricle on the coronal slice of rat brain 0.4 mm posterior to the bregma was measured for evaluation of hydrocephalus and the index of ventricle. Pathological changes of the brain were observed. Results No CH was found in the NS group. The incidence of CH in the Group A was 73% (11/15), which was significantly higher than 27% (4/15) in Group B at day 28. The escape latency time in the NS group was (8.21 ± 2.00) s,which was significantly shorter than ( 16.36 ±5.93 ) s of the Group A ( P <0.01 ). There was no significant difference in the escape latency time between the NS group and Group B [(11.38 ± 2.57 )s] (P >0.05 ). The index of ventricle in the NS group was 1.05 ± 0.41, which was smaller than 4.53 ± 1.70 in Group A and 2.77 ± 1.53 in Group B (P < 0.05 ). There were no obvious pathological changes in the NS group at different time points. There found edema of white matter surrounding the ventricle, twist and engorged callosum, proliferation of rhagiocrine cell as well as hemosiderin deposit in Group A. However, no hemosiderin deposit was found in Group B. Conclusions The content of iron in the cerebrospinal fluid may be correlated with hydrocephalus after IVH. Preventive use of deferoxamine can reduce incidence of hydrocephalus after ICH.
3.Experimental chronic hydrocephalus after intraventricular hemorrhage in rats:establishment of animal model and pathological observation
Guoqi GONG ; Hui MENG ; Yongzhi XIA ; Hua FENG
Journal of Third Military Medical University 2003;0(10):-
Objective To establish the rat model of chronic hydrocephalus after intraventricular hemorrhage(IVH).Methods Totally 110 Sprague Dawley female rats were divided into 3 groups:IVH group(n=50),saline control group(n=50)and the normal group(n=10).The rats in IVH group were infused autologous whole blood(130 ?l)into the right lateral cerebral ventricle.All rats except the normal group were sacrificed on day 1,3,7,14,28 after operation,and the transverse diameter of the lateral ventricle was measured to evaluate hydrocephalus and the index of ventricle.The pathological changes of the brain were observed.Results Hydrocephalus occurred in 7 out of 10 rats in IVH group at 28 d.The index of ventricle in IVH group(4.51?1.94)was higher than that of saline control group(1.05?0.41)and the normal group(0.79?0.49)(P
4.The signal transduction pathway of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali
Xia MENG ; Xuecong WANG ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2015;(10):1-6
Objective To investigate the signal transduction pathway mechanisms of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali .Methods The hepatic fibrosis in rats model was established by injecting carbon tetrachloride .Forty-five SD rats were randomly divided into normal group ,model group and therapeutic group.All rats except rats in normal group were intraperitoneally injected with 40%carbon tetrachloride in peanut oil with a dose of 2.0 mL/100g according to the body weight twice a week for 8 weeks.Then, the therapeutic group was given mistletoe alkali (8g/(kg· d)) for 8 weeks via gastrogavage.Rats in normal and model group were served with distilled water at the same time.At the end of the 16th week, blood and tissue specimens were taken from all the rats .The influence of mistletoe alkali on liver morphology in liver fibrosis rat model was reviewed by HE and Masson staining .The effects of mistletoe alkali on the expression of Leptin and its receptor ( OB-Rb ) in HSC in fibrosis rat model were determined by immunohistochemistry (IH).The expression of JAK2, STAT3 and the activity of phospho -JAK2, phospho-STAT3 were detected by Western blotting analysis .Results The degree of fibrosis of the model group was more severe than the normal group and the treatment group , which suggested that mistletoe alkali can reverse liver fibrosis in rats . Immunohistochemical staining showed that mistletoe alkali reduced the hepatic expression of leptin and OB -Rb in rats with liver fibrosis in comparison with their expression in the model group .Compared with the normal group , the expression of JAK2 and STAT3 increased in the model group .However, the expression of JAK2 and STAT3 decreased in the medication groups compared with the model group .Conclusion Mistletoe alkali can effectively ameliorate liver fibrosis in rats possibly through inhibiting hepatic leptin and its receptor expressions , which through inhibiting hepatic leptin and its receptor expressions , thus inhibit the JAK2/STAT3 signaling pathway .
5.Observation on estrogen-like effects of arsenite and effects of growth on HeLa cell proliferation
Ya-juan, XIA ; Meng, MENG ; Feng, ZHANG ; Jian-yun, LI ; Dong-jun, LIU ; Ri-gan, XU
Chinese Journal of Endemiology 2009;28(1):24-27
Objective To determine whether arsenic has estrogen-like effects,the cell proliferation was measured iil human eervical cancer line(HeLa)in vitro.Methods The HeLa cells were grown in improved RPMI 1640 supplemented respectively with β-estradiol(E2,1 nmol/L),Arsenic trioxide(As2O3,0.5,1.0,5.0 μmol/L),ICI (500 nmol/L),E2(1 nmol/L)+ICI(500 nmol/L),As2O3(1.0 μmol/L)+ICI(500 nmol/L)and control.The growth morphology of HeLa cell was observed under microscope after 72 h.The method of M1Tr was used to study the cell proliferation after 24.48 and 72 h.The technique of flow eytometry was used to measure cell cycle after 48 h. Results HeLa cells in E2 and 0.5 μmoL/L As2O3 treatment were more better growth in morphology than control group.Percentage of HeLa cells proliferation at 24,48,72 h in E2 and 0.5 μmol/L As2O3 treatment were 6.35%, 11.56%,38.33%and 6.35%,8.50%,20.26%respectively.The proliferation effect of HeLa cells was similar in two treatments.The proliferation of HeLa cells were inhibited in other treatments.Compared with control[(41.68± 1.05)%],HeLa cells were promoted go to S phases in E2[(55.72±2.31)%]and 0.5 μmol/L As2O3[(47.82± 1.41)%]treatment.But in other treatments HeLa cells were hold back to S phases.Compared with control,there was a significant differenee(P<0.05)of cell percentage in S phases in 5.0 μmol/L As2O3[(21.11±4.99)%]and ICI[(20.16±4.76)%]treatments.Conclusion Small amounts of As2O3 impose estrogen.1ike effects and stimulate the proliferation of HeLa cells.
6.Regulatory effect of a Chinese medicine prescription Hu Qi Shan on the telomerase activity in hepatic precancerous lesions in rats
Xia MENG ; Shuhong LIU ; Xia LI ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2016;26(10):36-42
Objective To explore the possible mechanism of action of telomerase in hepatic precancerous lesions, and the regulatory effect of a Chinese medicine prescription HU Qi Shan ( HQS) and its principal drug mistletoe alkali on the telomerase activity in rat liver tissues.Methods Rat model of hepatic precancerous lesions was established by Solt-Farber two-step protocol.The model rats were randomly divided into 5 groups, including the model group, high-dose HQS [8 g/(kg· d)] group, low-dose HQS [4 g/(kg· d)] group, and mistletoe alkali[8 mg/(kg· d)] group.γ-Glutamy-transpeptidase (γ-GT) was analyzed by immunohistochemistry.AFP was detected by immunofluorescence technique.The telomerase activity was detected using a quantitative telomerase detection kit.The expression of NF-κB P65 was detected by immunohistochemistry.The cytoplasmic protein IκB-αwas detected by western blotting.Results After treated with HQS and mistletoe alkali, the areas ofγ-GT-positive foci and number of AFP-positive cells in the liver tissus were significantly decreased than those of the model group ( P<0.05 for both) , the telomerase activity was decreased, the number of NF-κB P65-positive cells was also decreased ( P <0.05 ) , whereas the intracytoplasmic expression of IκB-αproteins was significantly increased ( P <0.05 ) .Conclusions HQS and mistletoe alkali can suppress the telomerase activity.Its possible mechanism may be through inhibition of the over-expressed apoptosis-related genes such as NF-κB P65 and increase the expression of IκB-αdecreasing the telomerase activity.
7.A preliminary clinical study on two kinds of ultrasonic elastographic technique for diagnosis of hepatic fibrosis
Hui FENG ; Xinli ZHANG ; Meng LI ; Yanxian ZHOU ; Min CHEN ; Xia CHEN ; Zheng DONG
Chinese Journal of Ultrasonography 2010;19(3):227-230
Objective To explore the clinical value of virtual touch quantification technique(VTQ)and fibroscan technique for the diagnosis of hepatic fibrosis.Methods A total of 1 02 patients with chronic liver disease and 78 normal individuals were enrolled in the study.They were all examined with VTQ and fibroscan technique.Pathological results were used as standard criterion.Results The liver tissue riqidity was associated with pathological results.The coefficient of relativity was 0.43309(VTQ)and 0.35840(Fibroscan).ROC curve displayed that VTQ value of 1.4 m/s and fibroscan value of 7.75 kPa can be used to differential diagnose the lowgrade liver fibrosis and high-grade liver fibrosis.The probability of success was 100 0A(102/102)and 100%(78/78)by VTQ,but 88%(90/102)and 100%(78/78)by fibroscan technique.Conclusions VTQ and fibroscan technique are useful in the diagnosis of hepatic fibrosis.Compared with fibroscan technique,VTQ has more advantages in sensitivity practicability and convenience.
8.Initial clinical study of virtual touch quantification for evaluation of hepatic fibrosis of chronic liver disease
Xinli ZHANG ; Meng LI ; Hui FENG ; Dakun ZHANG ; Ying SU ; Yanxian ZHOU ; Min CHEN ; Xia CHEN
Chinese Journal of Ultrasonography 2010;19(1):12-15
Objective To explore the clinical value of virtual touch quantification (VTQ) technique in assessing the hepatic fibrosis. Methods A total of 115 inpatients with chronic liver disease receiving liver biopsy were enrolled in this study, all patients liver tissue was checked by VTQ technique, and the results were compared with those of the control group including 80 healthy subjects. Results VTQ value was significantly different between the two groups (P = 0.0000).The VTQ value among different degree of hepatic fibrosis but between S0 and S1 had statistical significances (P = 0.0212, P = 0.0000).ROC curve displayed that VTQ value of 1.4 m/s could be used to diagnose middle-high-grade liver fibrosis, the sensitivity and specificity were 85.4 % and 64.7%, respectively. Conclusions VTQ can be used as a noninvasive and effective means for assessing the degree of hepatic fibrosis.
9.Research progress on the relationship between Rho GTPases and breast cancer
Xia ZHENG ; Bingbing LIU ; Fanfan MENG ; Shuai LI ; Feng GU ; Li FU
Tianjin Medical Journal 2017;45(7):777-780
Breast cancer is one of the major causes of death in women,and its incidence has been increasing year after year.The Rho GTPases,their regulatory proteins and Rho GTPases play an important role in promoting the occurrence and distant metastasis of breast cancer.Here we summarized the current knowledge of the regulation network of Rho GTPases,their regulatory proteins and Rho GTPases on the occurrence and development of breast cancer,and targeted therapy for RHO GTP enzyme pathway in breast cancer.
10.Expression ofβ1 integrin, Rac1, and RhoA in invasive micropapillary breast carcinoma
Xia ZHENG ; Bingbing LIU ; Fanfan MENG ; Shuai LI ; Feng GU ; Li FU
Chinese Journal of Clinical Oncology 2017;44(14):695-700
Objective:To investigate the expression and significance ofβ1 integrin, Rac1, and RhoA in invasive micropapillary breast carcinoma (IMPC). Methods:Immunohistochemical staining was performed to detect the expression ofβ1 integrin, Rac1, and RhoA in 89 patients with IMPC and 90 patients with invasive ductal carcinoma-not otherwise specified (IDC-NOS) who were treated between January 2007 and December 2008 in Tianjin Medical University Cancer Institute and Hospital. The relationship among the three proteins and the expression ofβ1 integrin, Rac1, and RhoA with clinicopathological features were determined. Results:β1 integrin (78.7%) and Rac1 (76.4%) were highly expressed in patients with IMPC. This expression was significantly higher than that in patients with IDC-NOS (63.3%and 54.4%). Statistical difference was found between the two groups (P<0.05). Positive rate of RhoA (68.5%) in patients with IMPC was also statistically higher than that in patients with IDC-NOS (44.4%, P=0.001). In patients with IMPC, the expression ofβ1 integrin and Rac1 was positively associated with lymph node metastasis (P<0.05), while the expression ofβ1 integrin was positively correlated with Rac1 expression (P=0.006). Expression of RhoA was positively correlated with lymph node involvement and ER and PR status (P<0.05). However, no correlation was found between RhoA expression and the expression ofβ1 integrin and Rac1 (P>0.05). Conclusion:Thus,β1 integrin, Rac1, and RhoA were overexpressed and might play an important role in the high frequency of metastasis in patients with IMPC. These proteins could be considered as biomarkers for the prognosis and new targets for IMPC therapy.