Child ; Humans ; Incisor ; abnormalities ; Maxilla ; Occlusal Adjustment ; Orthodontic Extrusion ; Tooth Abnormalities ; diagnosis ; etiology ; therapy ; Tooth, Impacted ; diagnosis ; etiology ; therapy

Bone Demineralization, Pathologic ; prevention & control ; Dental Caries ; prevention & control ; therapy ; Dental Restoration, Permanent ; Education, Dental ; Gingivitis ; prevention & control ; Humans ; Orthodontics, Corrective ; Preventive Dentistry ; education

Solid state fermentation involves the growth of microorganisms on moist solid substrates in the absence of free flowing water. It has gained considerable attention of late years due to its several advantages over submerged fermentation. This paper mainly introduces the characteristics and mathematical models of solid state fermentation and summarizes the development situation of various bioreactors, the design standards and applications.

Objective To evaluate the relationship between plasma substance P (SP) and calcitonin gene-related peptide (CGRP) concentrations and intraoperative cardiovascular events in diabetic patients.Methods Twenty-two patients of either sex with type 2 diabetes mellitus and 22 non-diabetic patients of either sex,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,aged 50-77 yr,undergoing elective knee arthroplasty under neuraxial anesthesia,served as diabetes mellitus group (group DM) and non-diabetes mellitus group (group NDM),respectively.The patients of either group were further divided into 2 subgroups (n =11 each) according to whether or not the patients had cardiovascular diseases before operation:no cardiovascular disease subgroups (NDM-NCVD subgroup and DM-NCVD subgroup) and cardiovascular disease subgroups (NDM-CVD subgroup and DM-CVD subgroup).The plasma SP and CGRP concentrations were dertermined by enzyme-linked immunosorbent assay at 30 min before operation and at the end of operation.The plasma cardiac troponin Ⅰ (cTnI) concentrations were measrued by enzyme-linked immunosorbent assay at 30 min before operation and 24 h after operation.The development of intraoperative cardiovascular events was recorded.Results Compared with group NDM,the incidence of intraoperative cardiovascular events and plasma cTnI concentrations at each time point were significantly increased,and the plasma concentrations of SP and CGRP were decreased in group DM (P＜0.05).Compared with group DM-NCVD,the incidence of intraoperative cardiovascular events and plasma cTnI concen trations at each time point were significantly increased,and the plasma concentrations of SP and CGRP were decreased in group DM-CVD (P＜0.05).Conclusion The development of intraoperative cardiovascular events is related to the decrease in plasma concentrations of SP and CGRP in diabetic patients.

Objective To culture astrocytes of human optic nerve and establish the cell lines for further study of healing process after optic nerve trauma. [WT5”HZ]Methods [WT5”BZ]Astrocytes of infantile optic nerve were cultured by tissue inoculation or tissue digestion with 0.25% trypsin and 0.06% EDTA. The second and fourth passage cells were stained with HE and anti GFAP, S 100 protein, vimentin, and CD34 antibodies. [WT5”HZ]Results The trypsinized astrocytes of infantile optic nerve reached confluence in 7 days. The cultured cells were in polygonal shape with processes and the cytoplasm was abundant. These cells were positive in GFAP, S 100 protein and vimentin staining, and negative in CD34 staining. Conclusions Astrocytes of human optic nerve can be successfully cultured by trypsinization rather than tissue inoculation.

Treating different diseases with the same method is a unique original thinking in Chinese medicine, which embodies the spirit of treatment based on syndrome differentiation. We briefly reviewed the origin and development of this concept. We also reviewed that thinking of combination of disease and syndrome is its premise and foundation. We put forward the conditionality of diseases in treating different diseases with the same method by cutting-in modern biological basic researches, that is to say, one kind specific diseases or disease of one specific system. We emphasized the importance of diseases conditionality in treating different diseases with the same method, which was of great significance in studies on combination of disease and syndrome, correspondence of prescription and syndrome, and modern biological basic researches of treating different diseases with the same method.
Humans ; Medicine, Chinese Traditional ; Prescriptions ; Research

Aim This study was designed to investigate the effects of pravastatin,a potent 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor,on vascular smooth muscle cells (VSMCs) proliferation and leukocyte-endothelial cell adhesion induced by lysophosphatidylcholine (LPC).Methods Cultured VSMCs from rabbit thoracic aorta were incubated with various concentrations of LPC in the absence or presence of different concentrations of pravastatin. MTT was used to evaluate the proliferation of VSMCs. We determined the effects of LPC and pravastatin on neutrophil K562 adhesion to endothelial cells ECV304 by directly counting non-adhesive K562 cells.Results Incubation of VSMCs with LPC (1～10 ?mol?L -1) stimulated proliferation of VSMCs in a time- and dose-dependent manner,while pravastatin (0.3～1 mmol?L -1) treatment prevented the proliferation of VSMCs caused by LPC. Moreover, incubation of ECV304 with 3 ?mol ? L -1 LPC for 12 h significantly enhanced K562 cells adhesion to endothelial cells, whereas pretreatment with pravastatin reduced leukocyte-endothelial cell adhesion. Conclusion These results suggest that pravastatin can antagonize the effects of VSMCs proliferation and leukocyte-endothelial cell adhesion induced by LPC.

Objective To introduce the research progress of the modern methods in evaluating de qi sensation in acupuncture and moxibustion, and to analyze the current research situation and major problems. Method The objective evaluation methods majorly used to estimate qi sensation were summarized. Result The currently used evaluation methods basically include scales and cerebral function imaging, while the rest methods are still in the beginning stage. Conclusion As a subjective feeling, de qi sensation is difficult to determine and quantify objectively, and there lacks an objective standard. The study on the mechanism of de qi sensation is relatively insufficient and superficial.

Objective To explore the expression and the role of Toll-like receptor(TLR3 and TLR4) in rats with nephrotic syndrome induced by respiratory syncytial virus(RSV).Methods SD rats were inoculated intranasally and intraperitoneally with 6?106 plaque for-ming unit(PFU) RSV to construct RSV-induced nephropathy in rat model.Rats were anesthetized and blood was withdrawn from cardiac on day 4,14,30,60 after inoculation.The normal ones without intervention were set as control group.The renal histology was observed by light microscope and electron microscope.The urinary protein collected in 24 hours were measured.Meanwhile,the expressions of TLR3 and TLR4 were detected by indirect immunofluorescence staining and flow cytometry in peripheral blood mononuclear cells of rats.The results were analyzed by SPSS 13.0 softwore.Results After inoculation,the proteinuria increased and under the electron microscope the foot processes of glomerular epithelial cells were fused which resembled human minimal change nephrotic syndrome.Proteinuria reached the peak and the fusion of foot processes were most extensive in rats of RSV at 60 d.The expressions of TLR3 and TLR4 in each group of RSV-induced nephropathy in rat models were significantly higher than those in normal control group(Pa0.05).Conclusions TLR3 and TLR4 in peripheral blood mononuclear cells of RSV-induced nephropathy rat mo-dels had being significantly activated until 60 d after RSV inoculation.TLR signaling pathway may play an important role in nephrotic syndrome of rats induced by RSV.

OBJECTIVE To detect bacteria number of the mattress in the common ward in order to reduce the mattress transmitted hospital infection. METHODS Secretion was collected for bacteria test from mattresses of the five common wards at the d0,dd1-6,dd7-13,dd14-20,and d21 and more after admission of patients. RESULTS The longer the patients stayed,the heavier the pollution of mattress was,its bacterial amount was much higher than the criterion made by Ministry of Health(10 CFU/cm~2). CONCLUSIONS Long-term hospitalization is the main factor that makes mattress bacterial contaminant in the common ward,and it should be cleaning and sterilizing regularly.