BACKGROUND:The dental pulp stem cells,marrow mesenchymal stem cells and periodontal ligament stem cells belong to the adult stem cells from oral cavity,which own two features of the adult stem calls:the ability of renewing themselves strongly and the potential of splitting.Through the continuous study of many kinds of stem cells from oral cavity,it is very helpful for human to show the process of making the firm organizations of tooth and the inducing mechanism,in order to direct the related clinical work and the prevention work.OBJECTIVE:To summarize features and application perspective of various adult stem cells from oral cavity in the clinic.METHODS:The first author retrieved PubMed database(http://www.ncbi.nlm.nih.gov/PubMed)and China National Knowledge Infrastructure(http://www.cnki.net)for relevant literatures published from January 1999 to December 2009.The key words were "stem call,dentistry".A total of 80 literatures were screened,and studies on basic research and clinical application of stem calls in stomatology medical field were included.Old and duplicated studies were excluded and finally 19 literatures were included.RESULTS AND CONCLUSION:With development of study,adult stem cells in oral cavity will be gradually found to establish integrated stem cell database,which can provide cell source for tissue engineering study in the oral cavity.

Tumor removal is the only curative method of pancreatic cancer.Although much progress has been made in pancreatic surgery,the most important one is the decline of the perioperative mortality.There were many randomized clinical trials including studies of the extension of the standard operation.1ymphadenectomy and resection margin.However,the long-term survival has not increased,and the median survival no longer than 20 months.According to the situation that many patients should not select resection,we think that it is important to control the surgical complications and to encourage the patients to receive surgery.

Objective To determine the value of soluble triggering receptor expressed on myeloid cells 1 (sTREM-1) in patients with stable chronic obstructive pulmonary disease (sCOPD). Methods From 2015 January to 2015 August, 101 patients with stable chronic obstructive pulmonary disease and 81 healthy controls were en-rolled. All subjects underwent pulmonary function test to record FEV1%pred and FEV1%FVC and their serum sTREM-1 levels were determined. Arterial blood gas analyses and COPD assessment tests were also conducted in stable COPD patients. Results Serum sTREM-1 levels were significantly higher in stable COPD patients than healthy controls (113.2 ± 31.5 pg/mL and 83.8 ± 17.9 pg/mL respectively, P=0.000). sTREM-1 levels were posi-tively correlated with CAT score (r=0.507, P=0.000), whereas negatively correlated with FEV1%pred and PaO2 (r = 0.507, P = 0.000; r = 0.439, P = 0.000). Conclusion sTREM-1 is a promising biomarker to evaluate sCOPD in the future.

It was confirmed that acetylcholine signaling pathway and dopamine signaling pathway play critical roles in refractive development.Many evidences have supported that acetylcholine and its receptor antagonists were closely related to the formation of experimental myopia.Retinal dopamine signaling could exert a significant influence on refractive development,and its upregulation induced by light comprises an important component of the retinal clock network;meanwhile,the retinal dopamine signaling could also participate in the regulation of retinal circadian rhythms.The role of intrinsic retinal circadian rhythms in the developing process of myopia is gaining increasing attention.Moreover,it was also found that both acetylcholine and dopamine signaling pathways influence the development of myopia.Therefore,the present paper summarizes the two signaling pathways in the mechanisms of regulating myopia process,which provides an insight into the pathogenesis of myopia and clinical ideas for the effective prevention and treatment of myopia.

This study aimed to investigate the transport characteristics of aripiprazole.A human intestinal epithelial cell model Caco-2 cell in vitro cultured had been applied to study the transport of aripiprazole.The effects of time,concentration of donor solutions,pH,temperature and P-glycoprotein inhibitor on the transport of aripiprazole were investigated.The determination of aripiprazole was performed by HPLC.It is concluded that aripiprazole is transported through the intestinal mucosa via a passive diffusion mechanism primarily,coex- isting with a carrier-mediated transport.The transport of aripiprazole is positively correlated to transport time, concentrations.The P-glycoprotein inhibitor cyclosporine A significantly enhanced the transport amount of aripiprazole.

Objective To design and develop a quadrature demodulation circuit for detection of ampli-tude and phase information in EIT measurement. Methods A model structure file was built in matlab/simulink using the elements in Ahera DSP Builder and verified by simulated stimulation. Then the model file was convert-ed to VHDL file via Signal Compiler, and the synthesis, adaptation, simulation and hardware implementation were accomplished. Results The simulation and testing results show that the circuit can extract the real and imagi-nary information of the measured signal and it also meets the EIT measuring requirement, with acceptable mea-sure error. Conclusion The demodulation circuit based on DSP Builder can precisely give real and imaginary information of EIT and provides technological support for full-information complex impedance measurement.

Objective To determine the optimized self micro-emulsifying drug delivery system (SMEDDS) formulation of probucol. Methods According to the indexes of mean particle size, zeta-potential, solubility of probucol in blank SMEDDS and the dissolution percentage in 5 minutes of the preparations, the optimized formulation was determined by the central composite design-response surface methodology. Results When the correspondent percentage of olive oil in oil phase (W/W) was 0.33, the percentage of oil phase in formulation (W/W) was 0.5, and the ratio of surfactant to co-surfactant (W/W) was 2.0, respectively. The mean particle size, zeta-potential, solubility of probucol and dissolution percentage in 5 minutes of micro-emulsion was 92.7 nm, -17.38 mV, 65.17 mg/mL and 63.46%, respectively. Conclusions The optimized formulation of the probucol SMEDDS was obtained quickly and conveniently by the central composite design-response surface methodology. The method had a reliable predictability.

Objective To investigate the main pathogenic factors of fetal distress and its complications and to reduce perinatal mortality. Methods Two hundred and ten records and pathological slides in autopsy due to fetal distress were reviewed. Results Cord problem was the first cause of fetal distress followed by placental and maternal factors. Most fetal distress were caused by multi-factors. Among 210 cases,meconium aspirative syndrome was found in 170 cases (81%),amniotic fluid aspiration 36 cases (17.1%) and hypoxic syndrome 4 cases (1.9%). There were 59 cases complicated with aspirative pneumonia including 48 cases of meconium aspirative pneumonia and 11 with amniotic fluid aspirative pneumonia. The main complications were hypoxia-ischemic encephalopathy(HIE)(153 cases),diffused pulmonary hemorrhage(68 cases) and fatal malformations (27cases). Conclusion Fetal distress increases perinatal mortality when complicated with HIE,diffused pulmonary hemorrhage,pulmonary infection or fatal malformation

70%). Based on the degree of coarctation, they are divided into two groups, one is mild grade (the circumference of isthmus is 0.5～0.8 cm, the ratio of ascending aorta and the aortic isthmus is 30%～ 45%), another is severe grade (the circumference is less than 0.5 cm, the ratio

Objective: To establish the batch release criteria of Gardenia jasminoides intermediate purification process based on statistical process control technology in order to ensure the batch-to-batch consistency and stability. Methods: Forty-eight batches of G. jasminoides intermediate purified solution were collected as the calibration set. The content of chlorogenic acid, shanzhiside, geniposidic acid, deacetyl asperulosidic acid methyl ester, genipin-1-β-D-gentiobioside, geniposide, and total acid were determined to establish the quantitative release criteria. Near-infrared spectra (NIRS) were acquired to establish the qualitative release criteria. Seventeen batches of G. jasminoides intermediate purified solution were prepared under different process conditions by the Box-Behnken experimental design. They were regarded as the validation set to verify the feasibility of the established quantitative and qualitative release criteria. Results: The established quantitative release ranges were: chlorogenic acid 5.753-6.713 mg/g, shanzhiside 9.456-10.723 mg/g, geniposidic acid 3.313-4.401 mg/g, deacetyl asperulosidic acid methyl ester 15.260-16.419 mg/g, genipin-1-β-D-gentiobioside 30.529-33.473 mg/g, geniposide 165.17-175.16 mg/g, and total acid 45.028-53.118 mg/g, respectively. The established qualitative release upper limits were: Hotelling T2 = 4.067 8 and DModX = 1.218 8. For sample 1, 5, 7, 9, 10, 14-17 from the validation set, the content of quality control indicators satisfied the quantitative release criteria and NIRS satisfied the qualitative release criteria. Conclusion: Based on NIRS and statistical process control technology, the developed quantitative and qualitative release criteria are simple and feasible. They could be used for the production quality control of G. jasminoides intermediate purification process.