PURPOSE: The aim of this study is to examine the effect Klorhex and Fittydent, which are used as cleaning agents on the adhesion of Candida on the surfaces of acrylic denture and palatal mucosa. In addition, ability of yeasts to adhere to acrylic strips was evaluated after applying these agents in vitro. MATERIALS and METHODS: Each group of 15 patients cleaned their dentures with either Klorhex or with Fittydent. The control group cleaned their dentures with water. RESULTS: It was found that 62.2% of the patients had colonies of Candida species on their palatal mucosa which was reduced to 51.1% after using these cleaning agents. The colonization rate with Candida spp on their dentures was reduces from 82.2% to 68.8% using these cleaning agents. The mean adhesion value of the Candida strains isolated from the acrylic strips were found to be 75cell/strip prior to applying the Klorhex and Fittydent and 37.5cell/strip and 15cell/strip after applying these agents, respectively. CONCLUSION: These results showed that Klorhex and Fittydent have a certain preventive effect on the colonization rate of Candida spp on the surface of these dentures, the palatal mucosa, as well as on the acrylic strips in vitro.
*Acrylates ; Adhesiveness/drug effects ; Antifungal Agents/*pharmacology ; Candida/*cytology/*drug effects ; Cell Adhesion/drug effects ; Denture Cleansers/*pharmacology ; *Dentures ; Mouth Mucosa/drug effects/microbiology ; Polyvinyls/pharmacology

OBJECTIVETo investigate the effects of physicochemical properties of drug on its permeability through buccal mucosa.

METHODSBenzoic acid, caffeine and hydrocortisone were selected as model drugs and their permeability coefficients through isolated porcine buccal mucosa were determined.

RESULTThe permeability coefficients of benzoic acid, caffeine and hydrocortisone through isolated porcine buccal mucosa were (1.01 x 10(-4)+/-1.64 x 10(-5))cm.s(-1)ì(2.75 x 10(-5)+/-1.79 x 10(-6))cm.s(-1) and (2.49 x 10(-5)+/-6.32 x 10(-6))cm.s(-1), which were 14,989 and 389 times as those through human skin, respectively.

CONCLUSIONThe permeability of drugs through buccal mucosa seems to be much better than that through human skin.

Animals ; Benzoic Acid ; pharmacokinetics ; Caffeine ; pharmacokinetics ; Hydrocortisone ; pharmacokinetics ; In Vitro Techniques ; Mouth Mucosa ; metabolism ; Permeability ; drug effects ; Swine

An 8-year-old girl who had experienced intermittent cough and fever over a 3 year period, was admitted after experiencing a recurrence for one month. One year ago the patient experienced a recurrent oral mucosal ulcer. Physical examination showed vitiligo in the skin of the upper right back. Routine blood tests and immune function tests performed in other hospitals had shown normal results. Multiple lung CT scans showed pulmonary infection. The patient had recurrent fever and cough and persistent presence of some lesions after anti-infective therapy. The antitubercular therapy was ineffective. Routine blood tests after admission showed agranulocytosis. Gene detection was performed and she was diagnosed with dyskeratosis congenita caused by homozygous mutation in RTEL1. Patients with dyskeratosis congenita with RTEL1 gene mutation tend to develop pulmonary complications. Since RTEL1 gene sequence is highly variable with many mutation sites and patterns and can be inherited via autosomal dominant or recessive inheritance, this disease often has various clinical manifestations, which may lead to missed diagnosis or misdiagnosis. For children with unexplained recurrent pulmonary infection, examinations of the oral cavity, skin, and nails and toes should be taken and routine blood tests should be performed to exclude dyskeratosis congenita. There are no specific therapies for dyskeratosis congenita at present, and when bone marrow failure and pulmonary failure occur, hematopoietic stem cell transplantation and lung transplantation are the only therapies. Androgen and its derivatives are effective in some patients. Drugs targeting the telomere may be promising for patients with dyskeratosis congenita.
Child ; Dyskeratosis Congenita ; complications ; therapy ; Female ; Humans ; Mouth Diseases ; etiology ; Mouth Mucosa ; pathology ; Recurrence ; Respiratory Tract Infections ; etiology ; Telomere ; drug effects ; Ulcer ; etiology

OBJECTIVETo study the role of fibrinogen molecule in the pathogenesis of periodontal diseases.

METHODSAn in vitro cell culture model was used. Methyl-(3)H Thymidine radiolabeled Porphyromonas gingivalis (Pg) ATCC 33277 were examined for their ability to adhere to and invade the confluent monolayers of human oral epithelial KB cells with or without exogenous human fibrinogens by scintillation spectrometry.

RESULTSThe addition of exogenous fibrinogens made more amount of and higher ratios of adhesive and invasive Pg, in contrast to the group without exogenous fibrinogen (P < 0.001). At different concentrations of exogenous fibrinogen, the amount and ratios of adhesive and invasive Pg varied significantly (P < or = 0.007). The higher concentrations of exogenous fibrinogen was added, the greater amount and ratios of adhesive and invasive Pg were found.

CONCLUSIONSFibrinogen promotes the adherence of Pg to human oral epithelial cells and may play an important role in the pathogenesis of periodontal diseases.

Bacterial Adhesion ; drug effects ; Fibrinogen ; administration & dosage ; pharmacology ; Humans ; KB Cells ; Mouth Mucosa ; drug effects ; microbiology ; Periodontitis ; etiology ; Porphyromonas gingivalis ; pathogenicity

OBJECTIVE: To explore and analyze the the expression change of miRNA associated with oral submucous fibrosis (OSF) treated by the Salvia combined with law-dose prednisolone. METHODS: Ten pairs of tissues from patients with typical early or advanced stage clinical pathological features of OSF and their paired normal tissues (internal control), were selected respectively. The miRNA expression profiles between the OSF and its paired controls were compared by the Affymetrix analysis. The primary normal oral mucous cells were cultured in arecoline (50 μg/mL) for 3, 6, 12 d (0 d ser ved as cont rol), and the primary OSF-fibroblast cells were cultured with Salvia (90 mg/mL) combined with low-dose prednisolone for 12, 24, 36 h (0 h served as control). The differential expression of miRNA was detected. RESULTS: Arecoline induced the expression changes of miRNAs in normal mucosal cells. Salvia combined with low doses of prednisolone reversed the related miRNA expression. CONCLUSION MiRNAs play an essential role in the occurrence and development of OSF. Salvia combined with low-dose prednisolone can reverse the expression of related miRNAs in OSF cells.
Arecoline ; Cells, Cultured ; Coculture Techniques ; Fibroblasts ; cytology ; drug effects ; Humans ; MicroRNAs ; metabolism ; Mouth Mucosa ; cytology ; drug effects ; Oral Submucous Fibrosis ; metabolism ; Prednisolone ; pharmacology ; Salvia ; chemistry ; Transcriptome

PURPOSE: The purpose of this study was to examine the effects of using gauze frozen with normal saline or ice on thirst-relief and oral condition of laparoscopic cholecystectomy patients. METHODS: A quasi-experimental nonequivalent control group, pretest-posttest design was used. Participants (n=53) received either gauze frozen with normal saline (n=17), ice (n=18) or wet gauze (n=18) for thirst-relief. The subjective thirst level and oral condition of the participants were assessed before the intervention, 15 min after the first intervention and 15 min after the second intervention. RESULTS: After oral care was provided twice, there were significant differences in thirst level among the groups. When oral care was provided twice, the oral condition of tongue, saliva, mucosal membrane, and gingiva was improved in patients receiving gauze frozen with normal saline or ice. CONCLUSION: Gauze frozen with normal saline and ice can be effective for oral care in reducing the thirst level and improving the condition of the oral cavity.
Adult ; Aged ; *Cholecystectomy, Laparoscopic ; Female ; Freezing ; Gallbladder Diseases/*surgery ; Gingiva/drug effects ; Humans ; *Ice ; Male ; Middle Aged ; Mouth Mucosa/drug effects ; Pilot Projects ; Saline Solution, Hypertonic ; Saliva/physiology ; *Thirst/drug effects ; Tongue/drug effects

Adult ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Mouth Mucosa ; drug effects ; Phytotherapy ; Recurrence ; Stomatitis, Aphthous ; drug therapy

OBJECTIVETo investigate the application of micronucleus test of buccal mucosal cells in monitoring the genetic effect of acrylonitrile in the population exposed to the acrylonitrile.

METHODSForty-one healthy male workers in a chemical factory in Shanghai were selected as the low concentration acrylonitrile exposed group while forty-seven healthy male workers in an acrylonitrile factory in Shanghai were selected as the intermediate concentration acrylonitrile exposed group. At the same time, thirty-one male workers who had no toxicant exposure and lived in the same community were selected as the control group. The micronucleus test in buccal mucosal cells and lymphocytes were used respectively for assessing the genetic damage status of these men.

RESULTSThe rate of micronucleus in buccal mucosal cells in both acrylonitrile groups (the low concentration group: 3.68% +/- 2.72%; the intermediate concentration group: 4.00% +/- 2.38%) was significantly higher than that in the control group (2.03% +/- 2.20%) (P < 0.05). The rate of micronucleus in the intermediate concentration group (4.23% +/- 3.34%) was significantly higher than that in the control group (2.48% +/- 1.46%) (P < 0.05). There was the correlation between the micronucleus test of buccal mucosal cells and the micronucleus test of the lymphocytes in the peripheral blood in the acrylonitrile exposed population (r = 0.299-0.359, P < 0.05).

CONCLUSIONThe micronucleus test of buccal mucosal cells replacing the micronucleus test of the lymphocytes in the peripheral blood can be used as one of the screening indexes in the surveillance of the genetic damage in the acrylonitrile exposed population.

Acrylonitrile ; toxicity ; Adult ; Carcinogens ; toxicity ; Dose-Response Relationship, Drug ; Humans ; Lymphocytes ; drug effects ; Male ; Micronuclei, Chromosome-Defective ; chemically induced ; Micronucleus Tests ; Mouth Mucosa ; cytology ; Occupational Exposure

Oral mucosal and salivary lipids exhibit potent antimicrobial activity for a variety of Gram-positive and Gram-negative bacteria; however, little is known about their spectrum of antimicrobial activity or mechanisms of action against oral bacteria. In this study, we examine the activity of two fatty acids and three sphingoid bases against Porphyromonas gingivalis, an important colonizer of the oral cavity implicated in periodontitis. Minimal inhibitory concentrations, minimal bactericidal concentrations, and kill kinetics revealed variable, but potent, activity of oral mucosal and salivary lipids against P. gingivalis, indicating that lipid structure may be an important determinant in lipid mechanisms of activity against bacteria, although specific components of bacterial membranes are also likely important. Electron micrographs showed ultrastructural damage induced by sapienic acid and phytosphingosine and confirmed disruption of the bacterial plasma membrane. This information, coupled with the association of treatment lipids with P. gingivalis lipids revealed via thin layer chromatography, suggests that the plasma membrane is a likely target of lipid antibacterial activity. Utilizing a combination of two-dimensional in-gel electrophoresis and Western blot followed by mass spectroscopy and N-terminus degradation sequencing we also show that treatment with sapienic acid induces upregulation of a set of proteins comprising a unique P. gingivalis stress response, including proteins important in fatty acid biosynthesis, metabolism and energy production, protein processing, cell adhesion and virulence. Prophylactic or therapeutic lipid treatments may be beneficial for intervention of infection by supplementing the natural immune function of endogenous lipids on mucosal surfaces.
Anti-Bacterial Agents ; pharmacology ; Bacterial Proteins ; drug effects ; Colony Count, Microbial ; Fatty Acids ; pharmacology ; Humans ; Lipids ; pharmacology ; Microscopy, Electron ; Mouth Mucosa ; chemistry ; immunology ; microbiology ; Porphyromonas gingivalis ; chemistry ; drug effects ; ultrastructure ; Saliva ; chemistry ; microbiology ; Sphingolipids ; pharmacology ; Virulence ; drug effects

To explore the influence of calculus bovis on the function of primary cultured mice oral fibroblasts, we determined the effects of calculus bovis on the fibroblast proliferation, collagen production, matrix metalloproteinases-2, -9 activities and tissue inhibitor of metalloproteinase-1 production by MTT assay, chloramine T method, gelatin zymography and enzyme-linked immunosorbent assays respectively. The results showed that calculus bovis could significantly inhibit the proliferation of fibroblasts and collagen synthesis in a concentration dependent manner, could significantly (P<0.05) suppress matrix metalloproteinases-2 activity and very significantly (P<0.01) inhibit the production of tissue inhibitor of metalloproteinase-1. In conclusion, the major function of calculus bovis in the process of ulcer healing is not to promote tissue regeneration, the mechanism that calculus bovis inhibits collagen synthesis may be partly due to its ability to very significantly (P<0.01) suppress the production of tissue inhibitor of metalloproteinase-1.
Animals ; Cattle ; Cell Proliferation ; drug effects ; Cells, Cultured ; Cholelithiasis ; chemistry ; veterinary ; Collagen ; drug effects ; metabolism ; Fibroblasts ; cytology ; physiology ; Materia Medica ; pharmacology ; Mice ; Mice, Inbred BALB C ; Mouth Mucosa ; cytology ; Tissue Inhibitor of Metalloproteinase-1 ; drug effects ; metabolism