BACKGROUNDTo study the correlation among the number of tumor-infiltrating dendritic cells (TIDC) in cancer tissues and biological behavior and prognosis in lung cancer patients.

METHODSS-100 protein expression level was determined in 39 patients with lung cancer by immunohistochemistry technique. The number of S-100 + TIDC and DNA ploidy were measured by means of flow cytometry.

RESULTSThe rate of positive S-100 protein expression was 100% in 39 patients, S-100 + cells showed typical morphology of dendritic cells. The percentage of S-100 +TIDC in patients with heteroploid (21.81%±8.18%) was significantly higher than those with diploid (16.03%±4.75%) (P=0.006). There was no statistical difference between lymph node metastasis group (20.43%±7.74%) and no lymph node metastasis group ( 19.41% ±7.76%), between tumor size greater than 3cm group ( 20.90% ±8.65%) and less than 3cm group ( 19.70% ±7.61%), between non-small cell lung cancer group (19.48%±7.98%) and small cell lung cancer group (21.74%±6.17%). No correlation was found between survival time ( 1 year , 1-3 years, greater than 3 years, respectively) and percentage of S-100 +TIDC (21.96%±8.05%, 19.47%±6.18%, 19.14%±8.76%, respectively).

CONCLUSIONSThe number of TIDC should not be chosen as an independent prognostic criterion in human lung cancer.

Objective:To compare and observe the different clearance effect of milk containing anti-Helicobacter pylori specific antibody. Methods:Four H. pylori strains were used to immune dairy cows to obtain milk containing anti-Helicobacter pylori specific antibody,of which,one was standardized strain and the other three were locally epidemic. Totally 148 people were screended,in which 72 were C-14 urea breath test positive, finally 39 meet the criteria. They were divided into two groups, the test group contained 21 subjects,were treated milk containing anti-Helicobacter pylori specific antibody;the 18 subjects in control group with common milk. The study was continued for 2 months. Results:Conducting the C-14 urea breath test,9 subjects in test group were negative,but no one was changed in control group. The effective clearance rate of the test group was 42. 86%,and there was no effective clearance in the control group,so there was significant difference in the two groups(P=0. 005,P<0. 05). Conclusion: The milk containing anti-Helicobacter pylori specific antibody is polyclonal and has higher valence,and could clear H . Pylori effectively.

Objective:To investigate the clinical and imaging characteristics of liver density changes in patients with initial-treated drug-sensitive secondary tuberculosis during standardized treatment and after withdrawal when cured.Methods:A retrospective analysis was conducted of 34 patients with initial-treated drug sensitive pulmonary tuberculosis in Beijing Chest Hospital of Capital Medical University and the First Affiliated Hospital of Xinxiang Medical University from January 2014 to April 2019. The chest computed tomography (CT) examination and sputum culture were performed before treatment. The patients received the standardized treatment and they were divided into three groups according to the course of treatment (three, nine and 12 months). Liver density and liver function were followed up during treatment (three, six, nine and 12 months) and after drug withdrawal (3, 6 and 12 months). The measurement data were analyzed by t-test. Results:The average liver density of these three groups gradually decreased during the treatment period, and gradually increased after drug withdrawal. There were five and nine cases of fatty liver occurred at three and six months of treatment in the six-month treatment group, respectively; and six, two and zero cases of fatty liver occurred at three, six, and 12 months after drug withdrawal, respectively. There were four, eight and 11 cases of fatty liver occurred at three, six, and nine months of treatment in the nine-month treatment group, respectively; and seven, two and zero cases occurred at three, six, and 12 months after drug withdrawal, respectively.There were five, 10, 14 and 14 cases of fatty liver occurred at three, six, nine and 12 months of treatment in the 12-month treatment group, respectively; and 12, 10 and five cases occurred at three, six, and 12 months after drug withdrawal, respectively. During the course of treatment, the density of livers of some cases decreased unevenly, and the density of right lobe of the liver was lower than the left lobe. The density of left lobe of the liver was (49.8±4.0) HU, (45.0±3.9) HU, (37.0±9.9) HU, (45.3±8.1) HU, (48.4±6.6) HU at the treatment of six, nine and 12 months and drug withdrawal of three and six months, and the density of right lobe of the liver was (44.0±6.1) HU, (37.2±7.7) HU, (25.5±15.8) HU, (38.5±11.7) HU, (43.8±9.9) HU, the differences were statistically significant ( t=4.611, 4.512, 2.307, 2.803 and 2.291, respectively, all P<0.05), while those were not statistically significant among three months of treatment and 12 months after drug withdrawal ( t=1.573 and 1.199, respectively, both P>0.05). There were two cases showed alanine aminotransferase (ALT) and aspartate amiotransferase (AST) accompanied elevated (ALT>2×upper limits of normal (ULN), AST<2×ULN) at three and six months of treatment, with no abnormalities detected of alkaline phosphatase (ALP) and total bilirubin (TBil). Conclusions:The liver density gradually decreases and uneven fatty liver could appear during anti-tuberculosis treatment, but it gradually returns to normal or relieves after drug withdrawal. The degree of fatty liver is not synchronized with the changes of liver function indexes (ALT, AST, ALP and TBil), which belongs to chronic reversible injury.

Helicobacter pylori (Hp) is one of most common pathogens causing gastrointestinal disorder including gastric ulcer, duodenal ulcer and gastric cancer, etc. It has been verified as class I carcinogen by WHO. Nowadays, combination antibiotics and proton pump inhibitor are mainly used to erase Hp in clinical application. However, with the increased resistance of Hp, the vaccine against Hp might become the best strategy to eradicate Hp. Elements including urease, virulence factor, outer membrane protein, flagella, play an important role in Hp infection, colonization and reproduction. They have become potential candidate antigens in the development of Hp vaccine, as reported in previous studies. Presently, these antigens-centric vaccines have been tested in animal models. Therefore, this article reviews the studies on Hp vaccine with urease, virulence genes, outer membrane protein and flagella as their candidate antigens, in an attempt to provide insights for research in this regard.
Animals ; Helicobacter pylori ; Urease/genetics* ; Helicobacter Infections/prevention & control* ; Vaccines ; Membrane Proteins