Humans ; Periodontal Diseases ; complications ; microbiology ; Periodontium ; microbiology ; Systemic Inflammatory Response Syndrome ; microbiology

Aged ; Animals ; Climacteric ; drug effects ; Disease Models, Animal ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Integrative Medicine ; methods ; Middle Aged ; Perimenopause ; Periodontitis ; drug therapy ; Phytotherapy ; Rats ; Rats, Sprague-Dawley

Objective To investigate the changes in proliferation index (PrI) of gingival fibroblasts in nifedipine-induced gingival hyperplasia ( NIFr-HGF). Methods Gingival fibroblasts were derived from a patient with nifedipine-induced gingival hyperplasia. Cells were induced by 10 ng/mL and 1 000 ng/mL nifedipine ( low- and high-concentration drug intervention groups), respectively. Cells were harvested 18 h and 30 h after intervention, cell cycles were detected by flow cytometry, and Prls were calculated. NIFr-HGF without nifedipine induction were served as blank control. Results After induction for the same time, Prls of NIFr-HGF cell cycle of low- and high-concentration drug intervention groups were significantly higher than those of blank control group (P <0.05) , while there was no significant difference between low and high-concentration drug intervention groups (P > 0.05). In low and high-concentration drug intervention groups, Prls of NIFr-HGF cell cycle after intervention for 30 h were significantly higher than those after intervention for 18 h [(57. 54 ± 0.019)% vs (21.15 ±0.011)%, and (59.36 ±0.031)% vs (19.01 ±0.012) %, respectively] (P < 0.05). Conclusion For patients with nifedipine-induced gingival hyperplasia, PrI of NIFr-HGF cell cycle increases with time of nifedipine intervention, while is not significantly related to drug concentration.

Objective:To study the effects of enamel matrix proteins (EMPs) on the biological characters of osteoblasts.Methods:MC3T3-E1 osteoblasts were cultured in vitro and exposed to EMPs at 300,400 and 500 ?g/ml.Enzyme kinetic method was used to assay alkaline phosphatase (ALP) synthesis and 3H-proline labelling combining collagenase digestion method was used to assay type I collagen synthesis.Results:The results manifested that ALP level in EMPs treated groups was higher than that in control group (P

Objective:To culture human alveolar osteoblasts and study its osteogenic characteristics in vitro.Methods:Human alveolar bone was obtained from human donor and cultured in explants.Cells migrating from explants were observed by inverted phase-contrast microscope and cell proliferation was detected by MTT assay.After cultured in conditional medium containing dexamethasone,?-glycerphosphoric sodium and ascorbic acid,cells were tested by ALP assay,Alizarin red assay and von Kossa assay,3H-proline labeling with collagenase digestion method.Results:The alveolar osteoblasts migrated from explants after 5 d culture.Cells could be passaged after 14-16 d culture.ALP values were obviously positive and cells showed positive reaction by Alizarin red assay and von Kossa assay in conditional medium.The cultured human alveolar osteoblasts secreted type I Collagen.Conclusion:The human alveolar osteoblasts cultured in this experiment grow well,and the morphological and biological characteristics of the culture cells are similar to those of osteoblasts.

The theory of Medical Immunology is independent,which includes a lot of new knowledge.Optimizing resource of medical immunology,recombinating knowledge structure,building knowledge framework and leading in PBL(Problem Based Learning) teaching method help to arouse students’studying interest and elevate teaching effect.

Dental Care ; Gingiva ; Humans

Humans ; Periodontal Diseases ; therapy ; Periodontics ; methods ; Risk

Adult ; Chronic Periodontitis ; diagnosis ; diagnostic imaging ; therapy ; Combined Modality Therapy ; Dental Scaling ; Follow-Up Studies ; Furcation Defects ; diagnosis ; diagnostic imaging ; therapy ; Humans ; Male ; Orthodontics, Corrective ; Periodontal Index ; Radiography, Panoramic ; Root Canal Therapy

Objective To investigate the short-term effects of ultrasound-guided percutaneous microwave ablation (MWA) and radiofrequency ablation (RFA) for treatment of thyroid nodules. Methods Totally 104 patients with 289 thyroid nodules underwent ultrasound-guided internal-cooled MWA and bipolar RFA in our department from July 2009 to January 2011. The outcomes of patients were closely assessed for a short-term of 6 months; the thermal ablation-related side-effects and complications were also discussed. Results Focal ultrasound images of the 289 thyroid nodules and the core-biopsy pathology findings of some nodules revealed complete coagulative degeneration of the ablated lesions. Follow-up for 3-6 months showed that sizes of all the nodules decreased to different extents. Only one nodule needed an extra ablation. No severe complications were observed. Conclusion The ultrasound-guided percutaneous MWA and RFA are effective, minimally invasive, easy to perform and can achieve rapid recovery. The methods can be used for out-patients with nodular thyroid diseases.