Objective:To study the gene expression in periodontal ligament cells (PDLCs) stimulated by Prevotella intermedia(Pi) lipopolysaccharide (LPS). Methods:PDLCs of passage 7 were treated with Pi LPS at 100 ?g/ml for 24 h, then gene express of the cells was examined by a gene chip of 512 genes. Results: Genes of Z46973,M62810,AF109632,U45879,X81882,M10051,D14520 and L36529 were downregulated.Conclusion:Some genes in PDLCs can be downregulated by Pi LPS.

Purpose:To investigate the choice of surgical therapy for the pancreaticoduodenal region invaded by or involved in stomach carcinoma. Methods:51 patients from Jan. 1981 to Dec. 2000 with stomach carcinoma invaded by or involved in the pancreaticoduodenal region were analyzed retrospectively. Results:All patients were primary stomach carcinoma, the operative methods of stomach carcinoma included subtotal gastrectomy (Group SG,n=29), radical Pancreaticoduodenectomy (Group PD,n=11),gastrojejunostomy (n=8) and tumour’s biopsy (n=3). In group PD, one-,and three-year survival rates was 63.6% and 36.4%, in group SG, it was 17.2% and 3.4%. The survival rate of group PD was markedly better than that of group SG respectively (P

The recombinant human fusion protein GM-CSF/LIF was used to study the effects of different doses rhGM-LIF, rhGM-CSF,rhLIF,and rhGM-CSF plus rhLIF on tumor cells in our paper. The results showed that rhGM-LIF induced myeloid leukemia cells differentiation and inhibited the growth of the cells significantly. Its effect was dose-related, more significantly than rhGM-CSF,rhLIF,and rhGM-CSF plus rhLIF in some dose range. It is important that rhGM-LIF can inhibit the growth of human liver cancer cell. The rhGM-LIF might be a useful recombinant protein for tumor thera-py.

With the rapid development of modern life sciences, tens of thousands of noncoding RNAs have been discovered, their biological roles have been revealed.Non-coding RNA, as a research hotspot in the field of molecular biology, has been shown to regulate the development and progression of tumors.This paper mainly describes the current research of several non-coding RNA(miRNA, lncRNA, circRNA, tRF)in the regulation of tumor and its application in the precision medicine era.

Objective To improve the existing folded grid tent and enhance the efficiency of medical support.Methods The simple pulley and handling dolly were developed,and the skeleton rod was strengthened.Results The improved folded grid tent was easy to carry,transport and handle,and the skeleton rod was solid enough.Conclusion The improved folded grid tent is gifted with an enhanced support efficiency and a longer service time.

Objective To study the effect of polysaccharide of Cipangopaludina chinensis on gray human cervix cancer cells(Hela cells) in vitro. Methods Polysaccharide of Cipangopaludina chinensis gray was extracted by water extraction. MTT assay and microscope were used to observe its effect on the growth inhibition of Hela cells at different concentrations of the polysaccharide. Results Polysaccharide of Cipangopaludina chinensis could more significantly inhibit the growth of Hela cells. Conclusion Polysaccharide of Cipangopaludina chinensis could inhibit human cervix cancer cells in vitro

Objective To evaluate the feasibility of video-assisted thoracoscopic resection of thymoma for myasthenia gravis.Methods Between July 2005 and February 2006,10 patients with thymoma were enrolled in this study.After double lumen intubation,video-assisted thoracoscopic resection of the thymus and thymoma was performed on the patients under total intravenous anesthesia.The largest tumor in this series was 6 cm ? 4 cm ? 3 cm.For a three-trocar technique,three incisions with a length of 1,3,or 1.5 cm were made respectively at the fifth intercostal space on the midaxillary line,fourth intercostal space on the middle between the anterior axillary line and midclavicular line,and sixth intercostal space on the anterior axillary line.During the operation,to expose the ipsilateral thymus and part of the contralateral thymus,the mediastinal pleura was cut along the internal thoracic artery,and superior vena cava or phrenic nerve.The thymus was then separated,and the thymic vein was dissected along the brachiocephalic vein and ligated.All the patients received radiotherapy after the operation with a dose of 4000 cGy.Results The operation time ranged from 70 to 130 minutes(mean,110 minutes)and the blood loss was less than 100 ml in all the cases.After the operation,7 patients presented Masaoka stage Ⅰ and 3 were at stage Ⅱ.No patient died or had cardiopulmonary complications or myasthenia crisis.The symptoms of myasthenia gravis were relieved in 1 week.The patients were followed up for 8 to 15 months(mean 13.0 months).During the period,none of them developed recurrence,metastasis,or aggravation of the myasthenia gravis.Conclusions It is feasible to resect stage Ⅰ to Ⅱ thymoma by video-assisted thoracoscopy.The procedure is minimal invasive with a few postoperative complications and good cosmetic outcomes.

Objective To investigate the characteristic of diagnosis and treatment of traumatic diaphragm rupture.Methods The characteristic of diagnosis and treatment of 32 cases with traumatic diaphragm rupture was analyzed retrospectively.14 cases were injured by sharp instrument and the other cases with blunt injury mainly caused by traffic accidents.Results Of 32 cases,19 had diaphragmatic ruptures preoperatively,13 diaphragmatic rupture was found during the operation.28 cases cured and 4 cases died.Conclusions The mechanism of traumatic diaphragm rupture and patients' symptoms and sign are severe and complicate with a high shock and mortality.Correct diagnosis and management of traumatic diaphragm rupture are very important.The treatment principle is thoracic injures first and laparotomy second.

The distribution of neuropeptide Yimmunoreactive (NPY-IR) fibers in the spleen of rat was investigated by using the immunohistochemical ABC method combine with glucose oxidase-DAB-nikel enhancement technique. The results demonstrated that the rat spleen is richly innervated by NPY-IR fibers. The NPY immunoreactive nerve fibers are mainly distributed along the branches of the arteries, especially surrounding the central arterioles. They are also observed in the connective tissue capsule, the lymphoid tissue of the white pulp, red pulp and marginal zone and around the splenic sinusoid. The positive fibers are closely related to the blood vessels and lymphocytes in the spleen, which suggested that these fibers may regulate the development and function of splenic lymphocytes. NPY may have a direct or an indirect effect on regulating blood circulation of the spleen and the lymphocytes.

In this study, the distribution of calcitonin gene-related peptide immunoreactive (CGRP-IR) nerve fibers in the spleen of the rat was investigated by using the immunohistochemical ABC method combined with glucose oxidase-DAB-nickel enhancement technique. The results showed that the rat spleen was richly innervated by CGRP-IR fibers. The nerve fibers containing CGRP were mainly distributed in the red pulp, especially surrounding the splenic sinusoid and small blood vessels. They were also observed in the lymphoid tissue of marginal zone, and occasionally in the periarterial lymphatic sheath (PALS). The positive fibers distributed in the spleen, which suggested that the fibers might modulate the development and function of splenic lymphocytes.