No abstract available.
Colorectal Neoplasms* ; Neoplasm Metastasis*

No abstract available.
Alcoholism* ; Mass Screening*

No abstract available.
Cataract* ; Nephrotic Syndrome*

STATEMENT OF PROBLEM: Crestal bone loss, a common problem associated with dental implant, has been attributed to excessive bone stresses. Design of implant's transgingival (TG) part may affect the crestal bone stresses. PURPOSE: To investigate if concavely designed geometry at a dental implant's TG part reduces peri-implant bone stresses. MATERIAL AND METHODS: A total of five differently configured TG parts were compared. Base model was the ITI one piece implant (Straumann, Waldenburg, Switzerland) characterized by straight TG part. Other 4 experimental models, i.e. Model-1 to Model-4, were designed to have concave TG part. Finite element analyses were carried out using an axisymmetric assumption. A vertical load of 50 N or an oblique load of 50 N acting at 30degrees with the implant's long axis was applied. For a systematic stress comparison, a total of 19 reference points were defined on nodal points around the implant. The peak crestal bone stress acting at the intersection of implant and crestal bone was estimated using regression analysis from the stress results obtained at 5 reference points defined along the mid plane of the crestal bone. RESULTS: Base Model with straight configuration at the transgingival part created highest stresses on the crestal bone. Stress level was reduced when concavity was imposed. The greater the concavity and the closer the concavity to the crestal bone level, the less the crestal stresses. CONCLUSION: The transgingival part of dental implant affect the crestal bone stress. And that concavely designed one may be used to reduce bone stress.
Axis, Cervical Vertebra ; Dental Implants ; Finite Element Analysis ; Models, Theoretical

BACKGROUND/AIMS: Proton pump inhibitor (PPI) and two types of antimicrobial agents, amoxicillin, and clarithromycin have been widely used for the eradication of Helicobacter pylori. However, antibiotic resistant strains has rapidly increased and has emerged as an important factor for eraducation failure. MATERIALS AND METHODS: Patients diagnosed with chronic gastritis, peptic ulcer disease or gastric epithelial neoplasm was examined by H. pylori PCR for mutation at 23S rRNA. Positive H. pylori PCR without 23S rRNA mutation was eradicated by standard triple therapy. Patients with 23S rRNA mutation was eradicated by standard triple therapy or concomittent therapy with amoxicillin, PPI, clarithromycin and metronidazol or quadruple therapy with bismuth, PPI, tetracycline and metronidazol. We evaluated the predictors of eradication failure with regards to 23S rRNA mutation and initial eradication regimen. RESULTS: Nine hundred sixty-one patients were studied. H. pylori PCR was positive in 35.0% of the patients and 23S rRNA mutatation was found in 22.2% of the patients. The eradication rate of H. pylori for the A2143G point mutated group with standard triple therapy was 28.5% and significantly lower than 93.1% of the wild type group and 100% of the concomitant therapy group, 66.6% of one week quadruple group and 100% of two week quadruple group (P<0.005). CONCLUSIONS: When 23S rRNA point mutation was positive, the standard triple therapy was not effective and the eradication rates was only 22.2%. Alternative regimens should be considered when 23S rRNA point mutation is detected, especially when A2143G point mutation is detected because A2143G point mutation is highly related to eradication failure.
Amoxicillin ; Anti-Infective Agents ; Bismuth ; Clarithromycin ; Daegu ; Gastritis ; Helicobacter pylori* ; Humans ; Neoplasms, Glandular and Epithelial ; Peptic Ulcer ; Point Mutation ; Polymerase Chain Reaction ; Proton Pumps ; RNA* ; Tetracycline

PURPOSE: The expression of matrix metalloproteinase-2 (MMP- 2) by cancer cells has been implicated in metastasis through cancer cell invasion of the basement membranes mediated by a degradation of collagen IV. However, the MMP-2 proenzyme requires proteolytic activation for its physiologic or pathologic role. We tried to 1) compare expression and activation of MMP-2 in breast cancers with benign tumors, 2) determine the correlation between the actviation of MMP-2 in breast cancer and established prognostic factors, 3) observe whether MMP-2 is expressed and activated in axillary lymph nodes as well, and 4) determine the degree of correlation between MMP-2 activity in lymph nodes and metastatic status, if MMP-2 is expressed in lymph node. METHODS: The specimens came from 11 fibroadenomas, 32 invasive ductal carcinoma and 129 axillary lymph nodes from cancer cases. Pro-MMP-2 cDNA transfected MDA-MB-231 cells were cultured and the conditioned media from them was used for a control. Zymography was used to monitor MMP-2 activation through the detection of the inactive proenzyme form (72 kDa) and the active form (62 kDa). Immunohistochemical staining was also performed for the localization of MMP-2 expression in tissues. RESULTS: 1) 72 kDa was expressed in all fibroadenomas and cancers, while 62 kDa was expressed in only 10 cases of fibroadenomas and all cancers. MMP-2 activity (62 kDa/72 kDa +62 kDa) was significantly higher in cancers than in fibroadenomas (P=0.014). 2) MMP-2 activity in cancers was significantly correlated with nodal metastasis (P=0.040). 3) The expression of MMP-2 in lymph nodes was very low and MMP-2 activity was not correlated with metastatic status. However, the immunohistochemical staining showed different staining patterns between the metastatic and non-metastatic nodes. CONCLUSION: We suggest that a measurement of the activation of MMP-2 could be useful as a prognostic marker representing metastatic potential in breast cancer. However, the low expression of MMP-2 in lymph nodes is an interesting subject for further study.
Basement Membrane ; Breast Neoplasms* ; Breast* ; Carcinoma, Ductal ; Collagen ; Culture Media, Conditioned ; DNA, Complementary ; Fibroadenoma ; Lymph Nodes ; Matrix Metalloproteinase 2* ; Neoplasm Metastasis*

Churg-Strauss syndrome is a clinicopathologic disorder of severe asthma, fever , and eosinophilia together with systemic vasculitis involving various organ systems. Characteristic cutaneous lesions include erythematous maculopapules resembling erythema multiforme, hemorrhagic lesions, and cutaneous and subcutaneous nodules. Histologically, extravascular granuloma and leukocytoclastic vasculitis are the most common findings. We report a case of 40-year-old woman who presented with generalized multiple hemorrhagic bullae that had developed 1 month ago. Previously, She had allergic rhinitis and asthma. Laboratory studies revealed peripheral blood eosinophilia, and positive p-ANCA. Skin biopsy revealed eosinophilic infiltrates and leukocytoclastic vasculitis.
Adult ; Antibodies, Antineutrophil Cytoplasmic ; Asthma ; Biopsy ; Churg-Strauss Syndrome* ; Eosinophilia ; Eosinophils ; Erythema Multiforme ; Female ; Fever ; Granuloma ; Humans ; Rhinitis ; Skin ; Systemic Vasculitis ; Vasculitis

Tufted angioma is a rare, acquired vascular tumor, most commonly presenting in the first year of life, which was first described by Wilson Jones in 1979. Spontaneous resolution of this tumor are known to be very rare and local recurrence often occurs unless the tumor is excised completely. We present two cases of tufted angioma developed in two 1-year-old girls. Skin biopsy in a case showed compatible findings with tufted angioma and the other was diagnosed at an other hospital. The lesions were treated with intralesional injections of triamcinolone acetonide and showed marked improvement. During follow up period, the lesions kept improving.
Biopsy ; Female ; Follow-Up Studies ; Hemangioma* ; Humans ; Injections, Intralesional* ; Recurrence ; Skin ; Triamcinolone Acetonide

STATEMENT OF PROBLEM: High stress concentration on the crestal cortical bone has been regraded as a major etiologic factor jeopardizing long term stability of endosseous implants. PURPOSE: To investigate if the design characteristics of crestal module, i.e. internal type, external type, and submerged type, affect stress distribution on the crestal cortical bone. MATERIAL AND METHODS: A cylindrical shaped implant, 4.3 mm in diameter and 10 mm in length, with 3 different crestal modules, i.e. internal type, external type, and submerged type, were analysed. An axisymmetric scheme was used for finite elment formulation. A vertical load of 50 N and an oblique load of 50 N acting at 45degrees with the implant's long axis was applied. The peak crestal bone stress acting at the intersection of implant and crestal bone was compared. RESULTS: Under vertical load, the crestal bone stress was high in the order of internal, external, and submerged types. Under the oblique loading condition, it was in the order of internal, submerged, and external types. CONCLUSION: Crestal module design was found to affect the level of the crestal bone stresses although the actual amount was not significant.
Axis, Cervical Vertebra ; Dental Implants ; Finite Element Analysis

PURPOSE: The expression of matrix metalloproteinase-2 (MMP- 2) by cancer cells has been implicated in metastasis through cancer cell invasion of the basement membranes mediated by a degradation of collagen IV. However, the MMP-2 proenzyme requires proteolytic activation for its physiologic or pathologic role. We tried to 1) compare expression and activation of MMP-2 in breast cancers with benign tumors, 2) determine the correlation between the actviation of MMP-2 in breast cancer and established prognostic factors, 3) observe whether MMP-2 is expressed and activated in axillary lymph nodes as well, and 4) determine the degree of correlation between MMP-2 activity in lymph nodes and metastatic status, if MMP-2 is expressed in lymph node. METHODS: The specimens came from 11 fibroadenomas, 32 invasive ductal carcinoma and 129 axillary lymph nodes from cancer cases. Pro-MMP-2 cDNA transfected MDA-MB-231 cells were cultured and the conditioned media from them was used for a control. Zymography was used to monitor MMP-2 activation through the detection of the inactive proenzyme form (72 kDa) and the active form (62 kDa). Immunohistochemical staining was also performed for the localization of MMP-2 expression in tissues. RESULTS: 1) 72 kDa was expressed in all fibroadenomas and cancers, while 62 kDa was expressed in only 10 cases of fibroadenomas and all cancers. MMP-2 activity (62 kDa/72 kDa +62 kDa) was significantly higher in cancers than in fibroadenomas (P=0.014). 2) MMP-2 activity in cancers was significantly correlated with nodal metastasis (P=0.040). 3) The expression of MMP-2 in lymph nodes was very low and MMP-2 activity was not correlated with metastatic status. However, the immunohistochemical staining showed different staining patterns between the metastatic and non-metastatic nodes. CONCLUSION: We suggest that a measurement of the activation of MMP-2 could be useful as a prognostic marker representing metastatic potential in breast cancer. However, the low expression of MMP-2 in lymph nodes is an interesting subject for further study.
Basement Membrane ; Breast Neoplasms* ; Breast* ; Carcinoma, Ductal ; Collagen ; Culture Media, Conditioned ; DNA, Complementary ; Fibroadenoma ; Lymph Nodes ; Matrix Metalloproteinase 2* ; Neoplasm Metastasis*