Objective To study endotoxin release induced by differential antibiotics in gram negative bacterial infection. Methods Thirty critical patients accompanied with gram negative bacterial infection were divided into group A (imipenem group, n=15) and group B (ceftazidine group, n=15). Imipenem (0.5 g iv q8h) and ceftazidine (1.0 g iv q8h) were given respectively. White blood cell (WBC), systolic blood pressure (SBP), lipopoly sacchride (LPS), tumor necrosis factor alpha (TNFα) and high density lipoprotein (HDL) were determined in 0, 1, 2, 3, 5 and 7 day. Results There was no difference in the change of WBC between two groups. Group A had a more stable SBP than group B. There was lower endotoxin release in group A than in group B and so were the cytokines release. HDL level was lower in group B than in group A. Conclusion Imipenem has lower endotoxinliberating potential than ceftazidine and mediate lower cytokines release. HDL may protect the patients from LPS damage.
Objective In order to study the mechanism of cholesterol gallstone formation through rabbit model which was induced by high cholesterol diet (HCD)Methods the activities of the high density lipoprotein receptor (HDLR) and low density lipoprotein receptor (LDLR) of hepatocytes were investigated. Results The results were as follows: The HDLR activity increased significantly after taking HCD for one week, at the same time, the LDLR activity only increased slightly. Thereafter, the activities of HDLR and LDLR all decreased markedly. As the time of animals taking HCD went on, serum total cholesterol, LDL cholesterol and hepatic cholesterol increased, but bile acids of biliary tract decreased gradually. Conclusion The results suggest that the changes of HDLR and LDLR activities of hepatocytes had no significant effect on bile cholesterol and the decreased HDLR and LDLR activities may cause the reduction some of substrate for bile acids synthesise and play an important role in the formation of gallstone.
ObjectiveTo evaluate the relationship between low density lipoprotein cholesterol (LDL-C)/high density lipoprotein cholesterol (HDL-C) of preoperation (L/H value for short) and the pathological staging of colorectal cancer. MethodsThe clinical data of 187 patients with colorectal cancer who treated in PLA General Hospital from July 2009 to June 2014 were analyzed retrospectively. ResultsThere were statistical significance in L/H value among different TNM stagings, N stagings, and M stagings (P<0.05):L/H value of TNM Ⅳ staging was higher than those of TNM Ⅰ, Ⅱ, and Ⅲ staging, L/H values of N1 staging and N0 staging were lower than that of N2 staging, L/H value of M1 staging was higher than that of M0 staging. However, there was no statistical significance in L/H value among different T stagings of colorectal cancer (P>0.05). Logistic regression results showed that L/H value were positively associated with TNM staging (OR=4.34, 95% CI:2.837-6.644, P<0.000 1), T staging (OR=1.72, 95% CI:1.175-2.512, P=0.005 3), N staging (OR=2.15, 95% CI:1.422-3.254, P=0.000 3), and M staging (OR=3.04, 95% CI:1.733-5.332, P=0.000 1) of colorectal cancer, and patient with higher L/H value took more risk of progression of tumor, lymph node metastases, and distant metastasis. ConclusionsRaise of preoperative L/H value is an independent risk factor for the progression of TNM staging, T staging, N staging, and M staging in colorectal cancer.