Objective: To investigate the effects of lycopene on T lymphocyte subpopulations and pulmonary alveolar macrophagic (PAM) functions in rats with acute lung injury (ALI). Methods: Rats were randomly divided into the following groups. (1) Control group, (2) ALI model group, (3) Low dose group, (4) Mid dose group and (5) High dose group. Control group and ALI model group were treated with solvent of lycopene, and the other groups were gastrically incubated with lycopene. Thirty-five days later, control group were given physiological saline, ALI model group and lycopene administrated groups were injected with lipopolysaccharide (LPS) (6.0 mg/kg) to induce ALI. One hour, four hours or six hours after LPS or physiological saline challenged, abdominal aorta blood for measuring lymphocyte subpopulations and bronchoalveolar lavage fluid for measuring function of PAM were gathered respectively. Results: (1) At h 1, the percentages of CD3+,CD4+ and CD8+ of lycopene administrated groups compared with control group were not significantly different. At h 4, the percentage of CD4+ was similar to that at h 1. As for the percentages of CD3+, except high dose group [(28.8?9.9)%] was significantly lower, low dose, mid dose and ALI model group showed no significant difference compared with control group[(39.5?4.5)%]. The percentages of CD8+ of ALI model and lycopene administrated rats, separately (10.2?3.9)%,(10.3?2.8)%,(9.8?2.8)%,(10.1?3.5)%, had been significantly reduced compared with control group[(15.1?2.5)%]; between ALI model and lycopene ad-ministrated groups there was no significant difference. The instance at h 6 was the same as that at h 4. The percentage ratios of CD4+ T-lymphocyte to CD8+ T-lymphocyte of ALI model rats were not significantly different compared with control group or lycopene administrated groups at h 1 and h 6. At h 4, the ratio of the CD4 + and CD8 + in Low dose and Mid dose groups had significant difference and ALI model, high dose hadn’t when they were compared with control group. (2) Lycopene increased the phagocytic function of PAMs significantly at h 1(P

Objective To investigate the value of diffusion-weighted magnetic resonance imaging in the differential diagnosis of primary gallbladder cancer with liver invasion and primary hepatocellular carcinoma (HCC) with gallbladder invasion. Methods From January 2009 to October 2010, 11 patients with primary gallbladder cancer and 19 patients with primary HCC were admitted to the PLA General Hospital. The clinical data of the 30 patients were retrospectively analyzed. All patients underwent diffusion-weighted magnetic resonance imaging with b value of 800 s/mm2, and the receiver operating curve (ROC) was drawn. The apparent diffusion coefficient (ADC) values of the patients with gallbladder cancer and HCC were compared by independent sample t test. Results Thirty tumors were detected in the 30 patients. All tumors showed high signal on DWI, slightly low signal on T1 WI and slightly high signal on T2 WI. The foci of 11 patients with primary gallbladder cancer were at the gallbladder fossa, and 10 of them had liver involvement. The mean ADC value of the 11 patients was (0.89 ±0. 14)mm2/s. Of the 19 patients with primary HCC, the foci of 15 patients were at the right lobe of liver, and 4were at the left lobe. The mean ADC value of the 19 patients was (1.04 ±0.18)mm2/s. There was a significant difference in the ADC value between patients with primary gallbladder cancer and those with primary HCC ( t =2.425, P＜0. 05). The area under the ROC was 0. 756 (95% confidence interval: 0.577-0. 935), and the sensitivity and specificity were 68.4% and 81.8%, respectively, when the threshold value was 0.96 mm2/s.Conclusion The ADC value of patients with primary gallbladder cancer is lower than those with primary HCC when the b value is 800 s/mm2, which is helpful in the differential diagnosis of primary gallbladder cancer and primary HCC.