Objective:To investigate the dosage in damaging rabbit liver with high intensity focused ultrasound (HIFU) and the feasibility of real time monitoring with two-dimensional ultrasound.Methods:With fixed HIFU emission power,working frequency,radiation depth,40 rabbit livers were damaged extracorporeally with a HIFU mode of intermittent fixed-spot irradiation.Echo of target region was measured and its changes with time were observed,the extent of echo enhancing region were also measured.Coagulative necrosis in rabbit livers were measured after dissection and pathological inspection were made.Results:Irradiation of extracorporeal HIFU made a coagulative necrosis region in rabbit liver,energy efficiency factor (EEF) were 9.22?1.57 J/mm 3,elevating echo of target region were observed,necrotic volume and maximum scar of rabbit livers were related linearly with volume and maximum area of elevating echo region measured by two-dimensional ultrasound.Conclusion:For specific tissue,there are a great deal experiments to do to decide a common HIFU dosage,two-dimensional ultrasound can realize real time monitoring of target region necrosis,echoic change in target region can predict coagulative necrotic volume.

Objective To investigate the changes of CA125 level with intra-abdominal tumor(epithelial ovarian cancer ,fallopian tube cancer and peritoneal cancer ) before and after chemotherapy serum and their effect on the prognosis of patients and their the clinical predictive value .Methods 174 cases(107 cases of epithelial ovarian cancer ,35 cases of fallopian tube cancer ,and 32 cases of peritoneal cancer) with peritoneal cancer patients were selected from January 2007 to January 2008 .The percentage decrease of ser-um CA125 were calculated after 3 courses of chemotherapy and CA125 decreased level of sensitivity with chemotherapy were ana-lyzed .The different levels of CA125 of median survival time and median survival time were compared .Results After chemothera-py ,CA125 decreased ≥ 75% in 42 cases ,decreased from 51% to 75% in 62 cases ,decreased from 25% to 50% in 32 cases ,and de-creased less than 25% in 38 cases .In CA125 decreased ≥ 75% group ,the chemotherapy effects was better than the other groups (P<0 .05) .Univariate analysis showed that the decrease proportion of CA 125 was positively correlated with chemotherapy effect (r=0 .396 ,P=0 .000) .Using the Kaplan-Meier method ,the patient's survival rate and median survival time were caculated and it showed that the 5 years survival and median survival time were significantly better in group CA 125 decline ≥ 75% than the other groups(P<0 .05) .Univariate analysis shows that the CA125 decline proportion of patients and long term efficacy was positively correlated(r=0 .412 ,P=0 .000) .The COX risk model analysis showed that FIGO stage ,CA125 level and the effect of chemothera-py were independent prognostic risk factors .Conclusion The level of CA125 is the independent risk factor of epithelial ovarian cancer ,fallopian tube cancer and peritoneal cancer prognosis .CA125 decline proportion could be used to know the effect of chemo-therapy and long term treatment ,and be the prognosis indicators for patients with intra abdominal tumor .

Objective To explore the impact of preoperative neoadjuvant chemotherapy on the expressions of multi-drug resistance genes in patients with cervical cancer and its relationship with the effect of chemotherapy. Methods Ninety-eight cervical cancer patients with TP regimen selected to perform preoperative chemotherapy were enrolled in the Affiliated Hospital of Guiyang Medical College between January 2010 and June 2014. Immunohistochemisty (En vision method) was used to determine the expressions of P-gP, GST-π and TopoII of the same patients before and after neoadjuvant chemotherapy and explore the relationship with the effect of chemotherapy. Results The positive expression rates of P-gp and GST-π were 71.43% and 64.29% before chemotherapy and 80.61%and 74.49%after chemotherapy, respectively. The former two had significant differences (P<0.01). The positive expression rates of TopoII was 48.98%before chemotherapy and 28.57%after chemotherapy , respectively, showing significant differences (P < 0.01). The expressions of P-gp, GST-π and TopoⅡ gene were not affected by the clinical and pathological features of cervical cancer (P > 0.05). Before neoadjuvant chemotherapy, the positive expression of GST-π in the ineffective group was statistically higher than that in the effective group (P<0.05). The positive expressions of P-gp and Topo II showed no statistical significance between the effective group and the ineffective group (P > 0.05). There was significant correlation in the expressions of P-gp, GST-π and TopoⅡ(P < 0.05) before and after neoadjuvant chemotherapy. Conclusions The expression of P-gp, GST-πand TopoⅡgene may not be affected by the clinical and pathological features of cervical cancer, but may change expressions of multi-drug resistance genes in cervical cancer by neoadjuvant chemotherapy. Monitoring their expression has a guiding significance for drug selection, prognostic judgment, and the following treatment regimen decision. The GST-π, expression level can be used as a biological parameter to predict the effect of TP regimen neoadjuvant chemotherapy.

Objective To study the influence of radiation on autophagy and its protective effect on radiation injury of hepatic cells.Methods Autophagy in mouse liver tissues was examined by GFP-LC3 staining and Western blot.Radiation-induced hepatic injury was evaluated by ALT and AST in mouse serum,protein expressions,and H & E and TUNEL staining of liver tissue.L02 cells were used for in vitro study.Chloroquine and rapamycin were used to manipulate the level of autophagy.Results Total body irradiation (TBI) of 8 Gy caused an increase of autophagy in mouse liver tissue and AST level in serum (t =-7.47,P ＜0.05) at 12 h after irradiation.Irradiation significantly increased the apoptotic level in liver tissue as well.Inhibition of autophagy by chloroquine caused a further increases of AST [IR:(345.42±35.25)U/L vs.IR +CQ:(433.42 ±40.07)U/L,t =-2.86,P＜0.05] and ALT [IR:(35.67 ± 8.08) U/L vs.IR+CQ:(98.5±26.67)U/L,t=-3.09,P＜0.05] in the serum,and it also promoted apoptosis in live tissue.However,rapamycin as an autophagy promoter showed protective effect for radiation-induced hepatic injury [AST:IR:(345.42 ± 35.25) U/L vs.IR + Rap:(278.42 ± 20.09)U/L,t =-2.86,P ＜ 0.05].Similar changes of autophagy and apoptosis in L02 cells were also observed in the cells treated with chloroquine and rapamycin.Inhibition of autophagy by CQ caused an increase of ROS in vitro and in vivo and further increased ALT and AST levels in serum,reduced L02 cell viability.Activation of autophagy by Rap effectively reversed those changes.Conclusions Autophagy protects hepatic cells from radiation injury by decreasing ROS induction,which provides a potential target for the development of new clinical regimens against radiation induced liver injury.

Objective To investigate dynamically characteristics of apparent diffusion coefficient (ADC) of MR diffusion-weighted imaging (DWI) in the rabbit VX-2 tumor model.Methods Forty New Zealand rabbits were included in the study and forty-seven rabbit VX-2 tumor models were raised by implanting directly and intrahepatically after abdominal cavity was opened.DWI was carried out periodically and respectively on seventh,fourteenth,and twenty-first day after implantation.Part samples of VX-2 tumors were studied by pathology.The distinction of VX-2 tumors on DWI was assessed by their ADC values.The statistical significance between different time groups,different area groups,or different b-value groups was calculated using SPSS12.0 software,respectively.Results ADC values of 47 VX-2 tumors in the area of tumor periphery,tumor center,and normal parenchyma around tumor were greater when b-value was 100 s/mm2 than those when b-value was 300 s/mm2 and the distinction of VX-2 tumor ADC in the area of tumor periphery,tumor center,and normal parenchyma around tumor between different b-value groups was significant,respectively( F =17.964,P ＜0.01 ; F =13.986,P ＜0.01 ; F =128.681,P ＜0.01 ).The ADC values in the area of normal liver parenchyma around tumor were greater than those in the area of VX-2 tumor periphery and tumor center when the b-value was 100 or 300 s/mm2.When b-value was the same( 100 or 300 s/mm2),the distinction of VX-2 tumor ADC between different areas was significant( F =176.586,P ＜0.01 ; F =55.089,P ＜0.01 ).The ADC of VX-2 tumor in the area of tumor periphery and tumor center became gradually low from seventh to fourteenth or twenty-first day after implantation and the distinction of ADC between different time groups but the area same (?) was significant( b =100 s/mm2,F =48.211,P ＜0.01 ;b =300 s/mm2,F =20.955,P ＜0.01 ).There were not obvious cellular necrosis in VX-2 tumors on seventh and fourteenth day after implantation but ADC of VX-2 tumor decreased unobviously because of cellular edemata in or around tumors.There were obvious cellular necrotic areas in VX-2 tumors on the twenty-first day after implantation.ADC of viable tumor cells in VX-2 tumors were lower on DWI than that in the area of normal liver parenchyma around tumor and ADC of dead tumor cells in VX-2 tumors were unequal,including high values,equal values,and low values but they were higher than that in the area of normal liver parenchyma around tumor after dead tumor cells had been liquified or had become cystic.Conclusions ADC is able to reflect objectively the diffusion of water molecules in the tumor and to reflect indirectly the degree of the growth and liquified necrosis of a tumor.ADC has an important and potential value in monitoring dynamical tumor growth and in evaluating malignant degree and therapeutic effect.

ObjectiveTo investigate its dynamic characteristics and pathological mechanism on magnatic resonance diffusion weighted imaging (DWI) after chemoembolization in rabbit liver VX-2 tumor model.MethodsForty New Zealand rabbits were included in the study and forty-seven rabbit VX-2 tumor models were raised by implanting directly and intrahepatically after abdominal cavity was opened.Forty VX-2 tumor models from them were divided into four groups.DWI was performed periodically and respectively for each group after chemoembolization.All VX-2 tumor samples of each group were studied by pathology.The distinction of VX-2 tumors on DWI was assessed by their apparent diffusion coefficient (ADC) values.The statistical significance between different time groups,different area groups,or different b-value groups was calculated using SPSS 12.0 software.ResultsWhen b-value was 100 s/mm2,ADC values in the area of VX-2 tumor periphery,VX-2 tumor central,or normal liver parenchyma around tumor became gradually low in sixteen hours after chemoembolization,and were the lowest at sixteenth hour,and then they increased gradually from sixteenth hour to fourty-eighth hour after chemoembolization.The distinction of ADC between different time groups was significant,respectively ( F =7.325,P ＜ 0.01 ; F =2.496,P ＜ 0.05 ; F =6.856,P ＜0.01 ).Cellular edema in the area of VX-2 tumor periphery or normal liver parenchyma around tumor increased quickly in sixteen hours after chemoembolization; however,from sixteenth hour to forty-eighth hour,cellular edema in the area of normal liver parenchyma around tumor decreased gradually and that in the area of VX-2 tumor periphery decreased lightly at first and then increased continually.Cellular necrosis in the area of VX-2 tumor periphery after chemoembolization was more significant than that before chemoembolization.The areas of dead cells in VX-2 tumors manifested low signal and high ADC value while the areas of viable cells manifested high signal and low ADC value.ConclusionsDWI is able to detect and discriminate tumor necrotic areas from viable cellular areas before and after chemoembolization.ADC of normal liver parenchyma and VX-2 tumor are influenced by intracellular edema,tissue cellular death,and microcirculation disturbance after chemoembolization.

OBJECTIVE: To explore the genetic basis of a child with holoprosencephaly. METHODS: Genomic DNA of the child was extracted and subjected to whole exome sequencing. Suspected variant was verified by Sanger sequencing of her family members. RESULTS: Cranial MRI suggested lobulated holoprosencephaly with partial absence of corpus callosum. Genetic testing revealed that she has carried a heterozygous c.517C>G (p.His173Asp) variant of the SIX3 gene, for which both of her parents were of wild type. Based on the American College of Medical Genetics and Genomics guidelines, the c.517C>G variant of SIX3 gene was predicted to be pathogenic (PS2+PM1+PM2+PM5+PP3). CONCLUSION The SIX3 gene c.517C>G variant probably underlay the multiple malformations in this child. Above finding has enabled her definite diagnosis.
Child ; Family ; Female ; Heterozygote ; Holoprosencephaly/genetics* ; Humans ; Mutation ; Whole Exome Sequencing

To sum up professor Liang Fanrong's clinical experience in treating tinnitus with the theroy of wind.Professor LIANG suggests that pathogenesis of tinnitus is the wind disturbing the ear.Expelling wind and dredging collaterals,harmonizing the middle energizer,and dredging the Governor vessel and brain-strengthening are the basic treatment laws.GB20,SJ17,GB19,SJ21,SI19,GB2,SJ5,SJ3,ST25,RN6,RN12,DU20,DU24,and EX-HN1 compose the foundation of prescription.Selection of acupoints according to syndrome differentiation.Combined with moxibustion treatment.To strengthen the desired sensation with technique of acupuncture manipulation.