Optimal timing and frequency of bone marrow soup therapy for functional restoration of salivary glands injured by single-dose or fractionated irradiation.

Injections of bone marrow (BM) cell extract, known as 'BM soup', were previously reported to mitigate ionizing radiation (IR) injury to salivary glands (SGs). However, the optimal starting time and frequency to maintain BM soup therapeutic efficacy remains unknown. This study tested the optimal starting time and frequency of BM soup injections in mice radiated with either a single dose or a fractionated dose.

[Research of the synergetic action of fluid shear stress and 17-beta estradiol on the proliferation of MC3T3-E1 cells].

Objective: To explore the suitable level and action time of 17-beta estradiol and fluid shear stress (FSS) and their combined effect on the proliferation of rat osteoblasts in vitro.

Methods: MC3T3-E1 osteoblasts were adopted after subcultured and different concentrations of 17-beta estradiol and FSS values were applied respectively on MC3T3-E1, the suitable level of 17-beta estradiol and FSS were selected through MTT and alkaline phosphatase (ALP). Then the two factors at the suitable level were applied simultaneously to MC3T3-E1 to detect the proliferation activity.

[The intercellular communication condition of alveolar bone with traumatic occlusion at early stage in rats].

Objective: To study the intercellular communication of alveolar bone during traumatic occlusion at early stage in rats.

Methods: The occlusal surface of the upper left first molar of rat was raised by placing a stainless steel wire to induce occlusal trauma in the lower left first molar. After 24 hours, the alveolar bone tissues of the lower jaws first molars at the both sides were taken out under anesthesia The various 27 000 genes were identified with genome-wide microarray, and further were investigated with reverse transcription-polymerase chain reaction (RT-PCR) and Pathway analysis.

[The primary study on the gene expression profiles of alveolar bone with traumatic occlusion in early stage in rats].

Objective: To study the gene expression profiles of traumatic occlusion in early stage with the animal model of rats.

Methods: The occlusal surface of the upper left first molar of rat was raised by placing a stainless steel wire to induce occlusal trauma in the lower left first molar. After 24 hours, the alveolar bone tissue of the first molars at the both sides of rats' lower jaws were taken out under anesthesia.

[The inspiration of comprehensive quality related cutting-edge curriculum of the University of California, Los Angeles School of Dentistry].

In this article, the author introduced three course of comprehensive quality training set up in the University of California, Los Angeles School of Dentistry (UCLA), named "introduction to behavioral science", "patient management", "methods in evidence-based dentistry". In order to provide reference for our medical reform of dental students, the content of the three courses were provided and the importance of comprehensive quality training was evaluated. The curriculum type, number of hours and time to deliver were compared between UCLA and School of Stomatology, Shandong University.

[Analysis of the curriculum of the University of California, Los Angeles School of Dentistry].

By comparative analysis of the curriculum of the University of California, Los Angeles (UCLA) School of Dentistry with Shandong University College of Stomatology, this paper explored what could be used as reference for Chinese dental educators. The curriculum characteristics and teaching ways in UCLA was analyzed; the dental courses of UCLA were compared with Shandong University, fourteen courses opened in UCLA were not opened in Shandong University; eight forefront courses selected from the fourteen courses were introduced. The analysis showed that in certain degree the curriculum characteristics and teaching ways of UCLA could be used for reference and fourteen forefront courses were also necessary.