ABSTRACT
Objective To study the clinical value of whole －body magnetic resonance diffusion weighted imaging(WB－DWI) in evaluating the chemotherapy response for lung cancer,thus to provide evidence for optimizing clinical imaging examination. Methods From October 2017 to May 2018,60 patients with lung cancer confirmed by histopathology in Linfen Central Hospital were selected. The patients underwent DWI examinations before chemotherapy and after two cycles of chemotherapy. The change of tumor size,distant metastasis and apparent diffusion coefficient (ADC) value were compared before and after chemotherapy. The correlation between the change rate of ADC value and the shrinkage rate of tumor size in the effective group was analyzed. Results Of 60 cases,1 case had new cerebral metastases after chemotherapy. There were statistically significant differences in ADC value [(1. 12 ± 0.33) ×10 －3mm2/svs.(1.56±0.40) ×10 －3mm2/s]andtumorsize[(4.63±2.75)cmvs.(2.28±1.45)cm] between before and after chemotherapy in the effective group(t= －3. 954,4. 711,all P＜0. 01). There was correlation between the change of ADC value and tumor size(r=0. 34,P＜0. 05). Conclusion WB－DWI can not only detect the change of tumor size and distant metastasis quickly and effectively,but also can observe the microscopic changes of tumor cells by measuring ADC value. So it can predict the early therapeutic response of the tumor and make effective evaluation for the staging and chemotherapy response of lung cancer.
ABSTRACT
Objective To examine the effect of carbon dioxide pneumoperitoneum on local pancreas pathological changes, serum levels of amylase, IL-6, E-selectin and P-selectin in rats with severe acute pancreatitis (SAP). Methods Fifty healthy male SD rats were randomly divided into 3 groups: CO2 experiment group ( n =20): SAP was induced by injecting 5% sodium taurocholate through retrogradely common biliopancreatic ducts via duodenal papilla,and then CO2 pneumoperitoneum was established at a pressure of 12 mmHg for 30 min; SAP group ( n = 20): The rats were treated as same as CO2 experiment group, excepting CO2 pneumoperitoneum; Control group (n = 10): Abdomen was incised and nothing was done to duodenum and pancreas except for moving them softly. The blood samples were gathered for examining serum levels of amylase, IL-6, E-selectin and P-selectin, and histopathologic examination of pancreas was done.Results Compared with control group, the pancreatic pathologic histology score, serum levels of amylase,IL-6, E-selectin and P-selectin were significantly higher in the CO2 experiment group and SAP group (P =0.000). The levels of IL-6 were significantly lower in CO2 experiment group compared to SAP group (P =0. 000). There was no significant difference between CO2 experiment group and SAP group in pancreatic pathologic histology score( P =- 0.294), the levels of serum amylase ( P = 0.073 ), E-selectin and P-selectin. Conclusions CO2 pneumoperitoneum has no adverse effect on the changes of pathological histopathology and the levels of IL-6, E-selectin and P-selectin in SD rats with SAP.
ABSTRACT
Objective To examine the effects of carbon dioxide (CO2) pneumoperitoneum on local pancreas pathological changes,serum levels of amylase,IL-1,IL-6,and the positive rate of dissolubility adhesion molecule (CD11a/CD18 and CD11b/CD18) expression in rats with severe acute pancreatitis (SAP). Methods Fifty healthy male Sprague-Dawley (SD) rats were randomly divided into 3 groups:CO2 pneumoperitoneum group (n=20):SAP was induced by injecting 5% sodium taurocholate through retrogradely common biliopancreatic ducts via duodenal papilla,and then CO2 pneumoperitoneum was established at a pressure of 12 mm Hg (1 mm Hg=0.133 kPa) for 30 min; SAP group (n=20):The rats were treated as same as CO2 pneumoperitoneum group,except CO2 pneumoperitoneum; Simple operation group (n=10):Laparotomy was performed and nothing was done to duodenum and pancreas except for moving them softly. The blood samples were collected for examining serum levels of amylase,IL-1,IL-6,and the positive rates of CD11a/CD18 and CD11b/CD18 expression,and histopathologic examination of pancreas was performed. Results Compared with simple operation group,the pancreatic pathologic histology score,serum levels of amylase,IL-1,IL-6,and the positive rates of CD11a/CD18 and CD11b/CD18 expression were significantly higher in CO2 pneumoperitoneum group and SAP group (P=0.000). The levels of IL-1 and IL-6 were significantly lower in CO2 pneumoperitoneum group as compared to SAP group (P=0.000). There was no significant difference between CO2 pneumoperitoneum group and SAP group in pancreatic pathologic histology score (P=0.294),the level of serum amylase (P=0.073),the positive rates of CD11a/CD18 (P=0.155) and CD11b/CD18 expression (P=0.201). Conclusion CO2 pneumoperitoneum has inhibitory effect on the levels of IL-1 and IL-6,rather than the positive rates of CD11a/CD18 and CD11b/CD18 expression in SD rats with SAP.