Oral rehabilitation restores form and function and impacts on general health.Teeth provide a discriminating sense of touch and directional specificity for occlusal perception,management of food with mastication and swallowing,and awareness of its texture and hard-ness.Peripheral feedback for control of jaw muscles includes the enamel-dentine-pulp complex and mechanoreceptors in the periodontal tis-sues.The implications of feedback from periodontal and other intra-oral mechanoreceptors as well as changes in central representation are significant for function and adaptation to oral rehabilitation.With implants,in the absence of the periodontium and periodontal mechanore-ceptor feedback,fine motor control of mastication is reduced,but patients are still able to function adequately.Further,there is no signifi-cant difference in function with full-arch fixed prostheses on teeth in comparison with implants.Predictable implant outcomes depend on bone support.Optimum restoration design appears to be significant for bone remodelling and bone strains around implants with occlusal loading. Finite element analysis data confirmed load concentrations at the coronal bone around the upper section of the implant where bone loss is com-monly observed clinically.Load concentration increased with steeper cusp inclination and broader occlusal table and decreased with central fossa loading and narrower occlusal table size.It is recommended that occlusal design should follow a narrow occlusal table,with central fossa loading in intercuspal contact and low cusp inclination to minimise lateral loading in function and parafunction.Acknowledging these features should address potential problems associated with the occlusion in implant therapy.

Improvements in severe burn and trauma care have enabled patients to survive massive bums and severe injury that would have once been fatal.Now up to 40％-70％ of patients develop hypertrophic scars after bums and trauma.The functional and psychosocial sequelae remain a major rehabilitative challenge,decreasing quality of life and delaying reintegration into society.So far,including surgical treatment,existing scar treatments have different degrees of limitations.In recent years,flap surgery and wound repair technology develop rapidly,such as perforator flap,flap dilation techniques,autologous scar composite skin,negative pressure wound treatment technology,the new technology of 3D and 4D bioprinting technology etc.These new technologies provide high quality tissue repair materials for clinical treatment of scar repair have a broad prospect of clinical application,and have achieved more satisfactory clinical repair treatment effect.The future need is to further strengthen the practice and innovation of scar repair,and the basic research and clinical application of scar should be strengthened and combined closely.The new elucidation of the scar prevention and therapeutic strategies should be put foward to improve the prognosis of patients with scar and the quality of life.

This paper introduces the conversion of a refrigeration centrifuge into a clinical multi-use centrifuge. The method and procedure are mainly discussed.

OBJECTIVE: To explore and summarize the operation method and operation stage for cochlear implant with chronic suppurative otitis media, to provide the clinical reference for cochlear implant with chronic suppurative otitis media. METHOD: The clinical data of 6 cases of cochlear implant with chronic suppurative otitis media from Jun 2006 to Mar 2009 in our hospital was analyzed retrospectively. The operation stage. surgical skill, possible risk and prognosis was analyzed and summarized. RESULT: 3 of 6 cases received single stage subtotal petrosectomy and cochlear implant. 3 of 6 cases received subtotal petrosectomy, they received staged cochlear implant 1 to 6 months later. No complications occurred, all of the cochlear implanted had good open set speech perception. CONCLUSION Staged operation was the first choice for cochlear implant with chronic suppurative otitis media. Single stage operation took potential risks, it should be done cautiously. The key points for the operation was the clearance of the pathological tissue totally, this required good surgical skill and operation instrument.
Adolescent ; Aged ; Chronic Disease ; Cochlear Implantation ; methods ; Female ; Humans ; Male ; Middle Aged ; Otitis Media ; surgery ; Retrospective Studies ; Treatment Outcome

The Wnt pathway plays a crucial role in skeletal development and is indispensable for determination of OS cell lines. In recent years, experimental evidences on Wnt signaling pathway in OS cell lines and OS animal models, and that of Wnt signaling pathway as a diagnosis and prognosis marker of OS suggested that Wnt signaling pathway plays an important role in the progression, invasion and metastasis of OS. In addition, the strategy and safety evaluation to target Wnt to treat OS are underway. Exploring the significant role of Wnt signaling pathway in OS may aid in personalizing therapeutics to increase patient survival.

Angina Pectoris ; prevention & control ; Coronary Disease ; prevention & control ; Drugs, Chinese Herbal ; therapeutic use ; History, Ancient ; Humans ; Medicine, Chinese Traditional ; methods ; Phytotherapy ; history ; methods

Objective To investigate the effects of propofol on lung nitric oxide synthase (NOS) in rats and the mechanism of its pulmonary artery and bronchus dilating effects. Methods Forty SD rats weighing (210+40)g were randomly divided into two groups: propofol group received propofol 100mg-kg-1 ip and when its righting reflex was lost propofol was continuously infused at 10mg'kg-1 h-1 through the vein in the tail for 10min, then the animal was killed; control group received normal saline 10 ml'kg-1 ip and the animals were killed 20 min later. After sacrificing the animals the chest was opened and the lungs were removed. The NO level in the broncho-alveolar lavage fluid (BALF) was measured in 10 animals. NOS activity and NO content of the lung tissue homogenate were examined in 10 animals. Cellular distribution and expression of endothelial NOS (eNOS) and neural NOS (nNOS) in the lung were examined by immunohistochemistry in 5 animals. Results The NO level in BALF, NO content and NOS activity in the lung homogenate were significantly higher in propofol group than those in control group (P

Objective To investigate the possible role and mechanism of the neurotoxic effect of dexamethasone on adult rats after having focal cerebral ischemia. Methods The rat model of focal cerebral ischemia was established by permanent middle cerebral artery occlusion (MCAO) One hour after ishemia,the experimental groups were treated with dexamethasone (5 mg/kg) while the control groups were treated with saline TUNEL staining and In-suit RT-PCR were used to show the changes of apoptosis and the expression of Fas mRNA at ipsilateral cerebral hemisphere. Results TUNEL positive cells were present in a time from 48 h to 72 h, localizing at peripheral ischemic area The expression of Fas mRNA at peripheral ischemic area in control groups began at 12 h, peaked at 24 h, and decreased to a lower level at 48 h and 72 h, and returned to the baseline at 120 h Treatment with dexamethasone after ischemia made apoptosis present at 24 h and the number of TUNEL positive cells at 48 h exceeded that in the control group at 48 h ( P

Objective To study the expression of TGF ? 1 protein and the changes of microglia of adult rats' brain treated with dexamethasone following permanent focal cerebral ischemia as to elucidating the neurotoxic effect of dexamethasone. Methods The adult rat's models of permanent focal cerebral ischemia were established by permanent middle cerebral artery occlusion.One hour after ischemia experimental groups were treated with dexamethasone (0.5 mg?kg -1?d -1) where as the control groups were treated with saline. The size of infarct was detected by Q570 image analysis system. Immunohistochemistry and picture analyses were performed to observe the expression of TGF ? 1 protein. The microglia was demonstrated by histochemical staining with isolectin-B4.? Result Dexamethasone treatment after ischemia increases the infarct volume significantly. The expression of TGF ? 1 and the changes of microglia were mainly located at the border zone of the infarct. The accumulation of the isolectin-positive microglia began at 12 h,peaked at 2d, decreased at 5 d. The densities of microglia in the groups treated with dexamethasone after ischemia decreased significantly at 12 h,24 h and 3 d as compared with the control groups, and disappeared at 5 d.The expression time-course of TGF ? 1 protein was two-phase. The first peak of expression was at 6 h; the second was from 24 h to 72h. The significant decrease in expression of TGF? 1 protein in rats treated with dexamethasone was observed at 6 h,24 h and 72h compared with that of control group. Conclusion The exceeding inhibition of the response of microglia and the two-phase expression of TGF ? 1 protein at the border zone of infarct may play a role in the neurotoxic effect of dexamethasone on cerebral ischemia.

Objective To investigate the regulatory effects of bombesin on the growth of human immortalized gastric epithelial cell line(GES-1), and its mechanisms. Methods ① The expression of gastrin releasing peptide receptor(GRP-R) mRNA in GES-1 was detected. ② The expression of GRP-R protein was tested by cross-linking experiment and the location of the receptors in the cells were investigated by cytochemistry. ③GES-1 cell line was incubated with varying concentrations of bombesin with or without its antagonist and growth of the cell line was determined. ④The effect of protein kinase C (PKC) inhibitor on cell growth induced by bombesin was studied. ⑤After treated with bombesin, the intracellular IP 3 and translocation of PKC activity were measured in GES-1. ⑥Semiquantification of GRP-R mRNA in this cell line treated with bombesin was performed. Results ①Expression of mRNA of GRP-R was demonstrated in GES-1 cells. ②The GRP-R protein was about 75?103 as revealed by cross-linking study, and the receptors were identified on the cell membranes by cytochemistry. ③Bombesin stimulated the growth of GES-1 significantly, which could be inhibited by specific antagonist of bombesin. ④Bombesin-induced growth of GES-1 was also inhibited by PKC inhibitor. ⑤Bombesin induced an increase of IP 3 generation in GES-1 as well as remarkable translocation of PKC activity from cytoplasm to the cell membranes. ⑥An increase in GRP-R mRNA was induced by treatment of cell line with bombesin. Conclusions Bombesin stimulates the growth of this GES-1 via its receptor GRP-R and through IP 3, PKC signal pathway. The increase in expression of GRP-R mRNA in GES-1 induced by bombesin indicates that bombesin might upregulate the GRP-R in the GES-1 cells.