This study is to establish the gastric cold model of rats. After gastric feeding with cold water for 5 weeks and extra iced water bath in the last 2 weeks, model group show distinct physical sign of gastric cold syndrome. The pathology of gastrics reveals gastricism of model group, while treatment group(treated with Fanzuojin Wan) show mild lesion. Elisa detection of model group show that the solution of interleukin-2 (IL-2) is higher than blank group. The difference with significance among model group, treatment group and blank group reveals the success of the establishment of gastric cold syndrome.
Animals ; Cold Temperature ; Disease Models, Animal ; Female ; Humans ; Male ; Rats ; Rats, Wistar ; Stomach ; chemistry ; metabolism ; pathology ; physiopathology ; Stomach Diseases ; metabolism ; pathology ; physiopathology

This study is to establish the gastric hot model of rats. After gastric feeding with ethanol solution for 3 weeks and feeding with extra capsaicin and ethanol solution for another 2 weeks, model group show distinct physical sign of gastric hot syndrome. The pathology of gastrics reveals gastricism of model group, while treatment group (treat with Zuojin Wan) shows mild lesion. Elisa detection of model group show that the solution of interleukin-2 (IL-2) is higher than the blank group. The obvious difference among model group, treatment group and blank group reveals the success of the establishment of gastric hot model.
Animals ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Eating ; Female ; Humans ; Male ; Rats ; Rats, Wistar ; Stomach Diseases ; drug therapy ; pathology ; physiopathology

5-lipoxygenase (5LO) is the key enzyme in the synthesis of leukotrienes, which are potent biological mediators of inflammation and anaphylaxis.After lock out of the 5LO gene by homologous recombination in embryonic stem cells, 5LO deficient-mice can develop normally and stay healthy, with a selective opposition to certain inflammatory insults. The cellular distribution of 5LO in unstimulated cells among different cell types is different; it can present in the cytosol, the nucleus, or both. 5LO was also found capable of shuttling in and out of the nucleus under certain conditions. It is suggested that 5LO might have other functions besides its traditional catalytic role.

Ceramics ; Dental Alloys ; chemistry ; Dental Porcelain ; Dental Restoration, Permanent ; Humans ; Metal Ceramic Alloys ; chemistry

Objective To investigate the clinic value of enhanced CT-guided percutaneously transthoracic lung biopsy. Methods A total of 423 patients who underwent CT-guided percutaneously transthoracic lung biopsy were retrospectively analyzed. The percentage of specimen are satisfactory,the rate of sample with pathological findings,the number of cases with complications,the average goes of unsuccessful biopsy and the times of changing puncture point were compared between the enhanced CT group and the plain CT group. Results Compare parameters in patients whose procedure were guided with the enhanced CT group and with plain CT group, the average goes of unsuccessful biopsy, the times of changing puncture point in patients, the percentage of specimen that were satisfactory, the rate of sample with positive pathological findings and the rate that complicated with pneumothorax or hemorrhage show statistical significance.(3.08±1.05 vs 3.75±1.34, 8.52%vs 18.54%,90.13%vs 73.60%, 76.62%vs 63.36%, 15.51%vs 27.53%, 7.76%vs 14.04%, P<0.05). Conclusion In patient whose biopsys were guided by enhanced CT, the percentage of samples that are satisfactory is higher, the incidence of complication is fewer and the sample with pathological finding is higher compared to those in patients whose biopsys were guided by plain CT. Therefore, enhanced CT-guided percutaneous transthoracic biopsy is more valuable than plane CT.

Objective To explore the clinical feature,treatment and prognosis of neonatal small intestinal atresia.Methods Retrospective study was carried out of 80 neonatal small intestinal atresias over the last 14 years,including diagnosis,treatment and prognosis.Results Of them,62 cases were healed(77.5%),18 cases were dead(22.5%),24 cases(30%)associated with other anomalities.The living cases were followed up for 6 months to 3 years.These symptoms had not relapse.Conclusions Satisfactry effect can be obtained by early diagnosis and operative treatment.Sonography is an ideal way for early finding intestinal atresias in a fetus.End-to-end single layer anastomosis is an ideal way for monointestinal atresia,and poly-end-to-end single layer anastomosis plus long gastrointestinal silicone tube for supporting is an ideal way for multipal intestinal atresia.

Background and purpose:Cancer microenvironment has become a hot topic of cancer research. It is important in the initiation of colorectal cancer. This study aimed to discuss the correlation between the characteristics of tissue culturein vitro and different cell types in cancer microenvironment.Methods:Samples were collected at different distances from the colorectal cancer lesions, which were named as positions 1, 2 and 3 from distal to proximal. Tissues were cut into 1-2 mm3 forin vitro culturing. HE staining was used to observe the structure of crypts. Immunohistochemistry was used to detect the expressions of Cyclin D1 (CD1), CD133, cytokeratin18 (CK18), vimentin and α-smooth muscle actin (α-SMA).Results:Position 3 grew faster than position 2 and position 1. As getting closer to the colorectal cancer lesions, expressions of CD1, CD133, vimentin and α-SMA were increased while expression of CK18 was decreased.Conclusion:The tissue structure and the expression of different cell types in cancer microenvironment changed more seriously as get-ting closer to the colorectal cancer lesions. This indicated that the change of cancer microenvironment may contribute to the initiation of colorectal cancer.

OBJECTIVETo explore the molecule mechanism of Salidroside inducing directional differentiation of mouse mesenchymal stem cells (MSCs) into neuronal cells.

METHODSThe mouse multipotent mesenchymal precursor cell line (D1) was taken as the objective. Cultured MSCs were divided into the negative control group (complete culture solution), the positive control group (containing 1 mmol/L β-mercaptoethanol), the Salidroside induced group (20 mg/L Salidroside), and the blocked group (20 ng/ ml DKK1, a special inhibitor of Wnt/β-catenin signal pathway). All cells were inoculated in a 6-well plate (1 x 10(4) cells/cm2) and grouped for 24 h. The expression of p-catenin was detected by fluorescence Immunochemistry in the negative control group, the positive control group, and the Salidroside induced group. The expression of neuron-specific enolase (NSE), beta 3 class III tubulin (β-tubulin III), nuclear receptor related factor 1 (Nurr1), glial fibrillary acidic protein (GFAP) mRNA, Wnt3a, β-catenin, low-density lipoprotein receptor-related protein6 (LRP6), Axin mRNA were detected using reverse transcrip- tion PCR (RT-PCR). The expression of β-catenin and NSE protein were analyzed by Western blot in the negative control group, the positive control group, and the Salidroside induced group. Ca2+ chelating agents (EGTA), L-type Ca2+ channel blocker (Nifedpine), and IP3Ks special inhibitor (LY294002) were used to block Ca2+ signal pathway respectively. The expression of Wnt3a, LRP-6, Axin, glycogen syn- thase kinase (GSK-3), and β-catenin mRNA were detected by RT-PCR. The β-catenin protein expression was analyzed using Western blot.

RESULTSCompared with the positive control group, β-catenin protein was strong positively expressed; the expression of Wnt3a, β-catenin, LRP6, Axin, NSE, β-tubulin III, Nurr1 mRNA, and NSE protein were obviously up-regulated in the Salidroside induced group (P < 0.01). Compared with the positive control group and the Salidroside induced group, β-catenin, NSE, Nurr1, and β-tubulin III mRNA expression decreased; β-catenin and NSE protein expression were also down-regulated in the blocked group (P < 0.01). Compared with the Salidroside induced group, the expression of Wnt3a, LRP-6, β-catenin, and Axin mRNA were down-regulated in the Ca2+ signal blocked group and the salidroside induced group (P < 0.01, P < 0.05).

CONCLUSIONSalidroside affected directional differentia- tion of MSCs into neuronal cells through Wnt/β-catenin and Ca2+ signal pathway.

Animals ; Cell Differentiation ; drug effects ; Glucosides ; pharmacology ; Glycogen Synthase Kinase 3 ; Lipoproteins, LDL ; Low Density Lipoprotein Receptor-Related Protein-6 ; Mesenchymal Stromal Cells ; physiology ; Mice ; Neurons ; Phenols ; pharmacology ; Phosphopyruvate Hydratase ; RNA, Messenger ; Signal Transduction ; Wnt Signaling Pathway ; physiology ; beta Catenin ; metabolism

This paper introduced the position setup and initial recruitment initiated in publicfunded institutions in Beijing, i.e. Beijing Stomatological Hospital. It stated that position setup should fit actual needs and recruitment standards should comply with long-term development strategy. In addition, the paper highlighted such principles as transparency and all-staff involvement, along with the supervising function of departments and experts of the hospital. Thus, position setup and initial recruitment can be smoothly accomplished, forming a long-standing incentive for medical staff.

Objective: To investigate the effect of insulin-like growth factor-Ⅰon osteocalcin secretion in periodontal ligament cells. Methods: Human periodontal ligament cells were cultured by tissue explant in vitro, and the concentration of osteocalcin were determined with radio-immunological method. Results: Under the condition of L-ascorbic acid and β-glycerophosphate in culture medium, human periodontal ligament cells secreted osteocalcin time-dependently and peaked at the third week; IGF-Ⅰ3.125 ng/ml，6.250 ng/ml, 12.500 ng/ml, 25.000 ng/ml could promote the secretion of osteocalcin dose dependently. Conclusion: IGF-Ⅰ can increase the secretion of osteocalcin in human periodontal ligament cells.