The expression of interleukin-10 mRNA in gingival lesion of different clinical states in patients with adult periodontitis / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the expression of interleukin-10 (IL-10) mRNA in gingival tissue of active and stable stage in patients with adult periodontitis.</p><p><b>METHODS</b>12 patients with acute abscesses of the periodontium, 12 patients after periodontal initial treatment and 6 periodontal healthy patients having extraction of impacted wisdom tooth were randomly divided into group A (active stage group), group B (stable stage group) and the control group. Biopsies of gingival tissues were collected from every subject of three groups. Technique of in situ hybridization was applied to observe the expression of IL-10 mRNA in the biopsies from three groups semi-quantitatively.</p><p><b>RESULTS</b>IL-10 mRNA was positively expressed in lymphocytes, macrophages and fibroblasts. The quantity of IL-10 mRNA of group A was the lowest in the three groups and was significantly lower than that of control group and group B respectively (P < 0.01). The quantity of IL-10 mRNA of group B was the highest in the three groups and was significantly higher compared with the control group and group A (P < 0.01).</p><p><b>CONCLUSION</b>The quantities of IL-10 mRNA expression are closely related with various clinical states of periodontitis.</p>

Effect of periodontal initial therapy together with Chinese herbal compound for clearing heat and detoxification on interleukin-1 beta and tumor necrosis factor-alpha in gingival crevicular fluid of patients with chronic periodontitis / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the effect of periodontal initial therapy together with Chinese herbal compound for clearing heat and detoxification (Abbr. TCM) on the levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-1 beta (IL-1 beta) in gingival crevicular fluid (GCF) of patients with chronic periodontitis (CPD).</p><p><b>METHODS</b>Thirty-four teeth of 24 patients with CPD were randomly assigned to the control group (17 teeth of 11 patients) and the treated group (17 teeth of 13 patients), they were treated for 8 weeks with periodontal initial therapy, but TCM was given additionally to the treated group. The GCF of the observed teeth was collected at the time before initial therapy (datum line) and at 2 and 8 weeks after treatment. At the same time, the clinical parameters, including probing depth (PD), clinical attachment loss (CAL), and bleeding on probing (BOP) were recorded, and the levels of TNF-alpha and IL-1 beta in GCF were measured by radioimmunoassay.</p><p><b>RESULTS</b>The levels of TNF-alpha and IL-1 beta in GCF after treatment were significantly lowered in all patients as compared with those before treatment (P<0.01), while PD, CAL and BOP showed significant reduction (P<0.01). After treatment, TNF-alpha and IL-1 beta levels in the treated group were lower than those in the control group (TNF-alpha: 2.5551 +/- 1.0157 microg/L vs 3.4341 +/- 1.0762 microg/L, IL-1 beta: 0.1335 +/- 0.0216 microg/L vs 0.1471 +/- 0.0169 microg/L; P<0.05).</p><p><b>CONCLUSION</b>TCM could enhance the effect of periodontal initial therapy in lowering TNF-alpha and IL-1 beta levels, which was attributed to reducing the inflammatory reaction of periodontal tissues.</p>

Comparative observation on the effects of Radix tripterygium hypoglaucum tablet and Tripterygium glycosides tablet in treating erosive oral lichen planus / 中国结合医学杂志

<p><b>OBJECTIVE</b>To compare the therapeutic effects of Radix Tripterygium hypoglaucum tablet (THT) and Tripterygium glycosides tablet (TGT) in treating erosive oral lichen planus (EOLP).</p><p><b>METHODS</b>The patients were randomized into two groups, and they were treated with THT (n = 47) or TGT (n = 47), respectively. The therapeutic effects were evaluated after 3 months treatment.</p><p><b>RESULTS</b>For the patients of grade 1, the total efficacy in TGT group was 85.71%, compared with 52.38% in THT group, the efficacy was statistically greater in the group receiving TGT (P = 0.043). However, for the patients of grade 2, the difference was not statistically significant (P = 0.173).</p><p><b>CONCLUSION</b>TGT is more effective in treating EOLP than THT for grade 1 patients. However, TGT is not suitable for patients of child bearing age.</p>

Biological effects of tetracycline on cultured human periodontal fibroblasts / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To explore the biological effects of tetracycline on cultured human periodontal ligament fibroblasts (HPDLFs).</p><p><b>METHODS</b>Increasing concentrations of tetracycline (1, 5, 20, 100, 500, 2500 microg/ml) were added to the medium of cultured HPDLFs, respectively. After co-incubated for 2 days, cell morphology was observed under reverse microscope, meanwhile, cell proliferation activity was assayed using MTT, the total amount of protein was detected with Coumassie Bright Blue method and DNA synthesis was measured by 3H-TdR.</p><p><b>RESULTS</b>Over a concentration range of 1 to 100 microg/ml, cells demonstrated a normal appearance, spindle or fusiform shaped. Moreover, at a concentration range of 20 to 100 microg/ml, tetracycline significantly enhanced the proliferating activity and biosynthesis of HPDLFs (P < 0.01). However, higher concentration (2500 microg/ml) not only changed cell morphology, but also significantly inhibited cellular activity.</p><p><b>CONCLUSION</b>The results suggested that proper doses of tetracycline could promote proliferation and biosynthesis of HPDLFs while higher concentrations of tetracycline had cytotoxic effect.</p>

Effects of minocycline on biobehavior of human periodontal ligament cells in vitro / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To evaluate the influence of minocycline on the proliferation and biosynthesis of human periodontal ligament cells (HPDLCs) in vitro.</p><p><b>METHODS</b>Various concentrations of minocycline (1, 5, 20, 100, 500, 2 500 mg/L) were added to the medium of cultured HPDLCs respectively. After co-incubated for 2 days, cell morphology was observed under reverse microscope, cell proliferation activity was assayed using MTT, the total amount of protein was detected with Coumassie Bright Blue method and DNA synthesis was measured by (3)H-TdR.</p><p><b>RESULTS</b>The presence of minocycline not exceeding 500 mg/L in the medium resulted in no morphological change of HPDLCs. Moreover, at a concentration range of 5 to 100 mg/L, minocycline significantly enhanced the proliferative activity and biosynthesis of HPDLCs (P < 0.01). However, higher concentration (2 500 mg/L) not only changed cell morphology under microscope, but also significantly inhibited cellular activity.</p><p><b>CONCLUSIONS</b>The results suggest that proper doses of minocycline could promote biobehavior of HPDLCs, while higher concentrations of minocycline had cytotoxic effect which may intervene affect tissue repair and regeneration.</p>

The effect of periodontal initial therapy on circulating TNF-alpha and HbA1C in type 2 diabetes patients with periodontitis / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the effect and mechanism of periodontal initial therapy on type 2 diabetes patients with periodontitis.</p><p><b>METHODS</b>15 type 2 diabetes patients with periodontitis were selected. Their body mass index (BMI), sulcus bleeding index (SBI), probing depth (PD), circulating tumor necrosis factor-alpha (TNF-alpha) concentration, and the value of glycosylated hemoglobin (HbA1C), triglycerides (TG) and cholesterol (CHOL) were assessed respectively before and 4-6 weeks after periodontal initial therapy.</p><p><b>RESULTS</b>After initial therapy, SBI, PD, circulating TNF-alpha concentration, and the value of HbA1C and TG were reduced significantly (P<0.05), while there were no significant differences in BMI and CHOL value (P>0.05).</p><p><b>CONCLUSIONS</b>Periodontal initial therapy can effectively reduce HbA1C value in type 2 diabetes patients with periodontitis, possibly through the reduction of circulating TNF-alpha concentration.</p>