ABSTRACT
Objective To evaluate the effect of resuscitation with Ringer′s malate solution on acute lung injury caused by hemorrhagic shock in rats. Methods Forty-eight SPF healthy male Sprague-Dawley rats, aged 7-9 weeks, weighing 280-320 g, were assigned into 4 groups ( n＝12 each) using a random number table method: sham operation group (group S), normal saline group (group NS), Ringer′s lac-tate solution group ( group RL) and Ringer′s malate solution group ( group RM). In NS, RL and RM groups, the model of hemorrhagic shock was established, and rats were resuscitated after 60 min of hemor-rhagic shock. Rats were sacrificed at 3 h after resuscitation, and bronchial alveolar lavage fluid ( BALF) was collected to count neutrophils. Lung tissues were obtained for determination of the wet∕dry weight ratio (W∕D ratio), myeloperoxidase (MPO) activity, and contents of tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β) and IL-6. Lung tissues were obtained for examination of the pathological changes. Results Compared with group S, the neutrophil count in BALF, W∕D ratio, MPO activity and contents of TNF-α, IL-1β and IL-6 were significantly increased in NS, RL and RM groups ( P＜0. 05). Compared with NS and RL groups, the neutrophil count in BALF, W∕D ratio, MPO activity and contents of TNF-α, IL-1β and IL-6 were significantly decreased in NS and RL groups (P＜0. 05). Conclusion The severity of acute lung injury is reduced when Ringer′s malate solution is used for resuscitation as compared with that when normal saline and Ringer′s lactate solution are used in a rat model of hemorrhagic shock.
ABSTRACT
Objective To explore the in vitro cytotoxicity of sunitinib in highly metastatic hepatocellular carcinoma cell line MHCC97-H, and the effect of it on the expression level of focal adhesion kinase (FAK). Methods MHCC97-H hepatoma cells were cultured and divided into control group and experimental (sunitinib) group. Experimental groups were added 2.5, 5,10 and 20μmol/L of sunitinib for 24, 48 and 72 hours respectively. The morphological changes were observed before and after sunitinib treatment in MHCC97-H with Giemsa stain. The inhibitory rate of proliferation in MHCC97-H was detected by MTT assay. The expressions of FAK protein before and after sunitinib treatment were detected by Western blot assay. Results Sunitinib showed the inhibitory effect on hepatoma cell line MHCC97-H. Giemsa staining showed that chromatin condensation, nuclear fragmentation, apoptotic bodies and other typical morphological features. The inhibitory rate was the most obvious in 48-h treatment group. The inhibitory rates were (0.433 ± 0.115)%, (32.863 ± 1.471)%, (49.240 ± 2.256)%, (63.797±2.707)%and (58.887±3.409)%for 2.5, 5, 10 and 20μmol/L concentration groups, and there were signifi-cant differences between groups (P<0.05). Results of Western blot assay showed that the expression levels of FAK protein were significantly reduced after different concentrations of sunitinib treatment for 48 h (P<0.05). Conclusion Sunitinib has inhibitory effect on hepatoma cell line MHCC97-H, enhances the apoptosis and decreases the the expression of FAK pro-tein.