The survival or growth rate of multiple-antibiotic-resistance (Mar) mutants of Escherichia coli K-12 MC4100 or W3110, influenced by many stresses (4% ethanol, 3mM HzO, 0.5M NaC1, pH 2, pH 5, and heat-shock (42C)), and the effects of salicylate (SAL) induction were evaluated by growth rate. Under the stress conditions of pH 5 and heat-shock, growth rates of Mar mutants derived from MC4100 or W3110 induced by salicylate (SAL) were higher than those of wild type Escherichia coli K-12 and E. coli clinical isolates. Under the SAL induction, growth rates of wild type MC4100 or W3110 were higher than those of Mar mutants in case of 0.5M NaC1 or pH 2 stress, respectively. Without SAL induction, growth rates of wild type E. coli were higher than those of Mar mutants, in case of MC4100 grown with 4% ethanol, HO, or heat-shock stresses, in case of W3110 grown with pH 2, or heat-shock stress. There were sorne instances of cytotoxic effect of SAL to the Mar mutants, wild type E. coli, or E. coli clinical isolates under some stress conditions.
Escherichia coli* ; Escherichia* ; Ethanol ; Hydrogen-Ion Concentration

Multiple-antibiotic-resistance (Mar) mutants were prepared from the wild-type Escherichia coli K-12 MC4100 or W3110, were analyzed for the antibiotic resistance by minimal inhibitory concentration (MIC), and compared with their isogenic parent strains and E. coli clinical isolates. Mutation frequency was approximately 10-7 to 10-9 MIC levels of chloramphenicol (Cm), ampicillin (Ap), tetracycline (Tc), or ciprofloxacin (Cp) antibiotics against E. coli Mar mutants were 50 ug/ml, 300 ug/ml, 200 ug/ml, or 30 ug/ml, respectively, at their highest MIC levels. Cross-resistances of each Mar mutants against Cm, Ap, Tc, Cp, erythromycin (Em), nalidixic acid (Na), and rifampin (Rf) were evaluated. Almost all of Mar mutants showed approximately 9 to 140-fold increase of MIC with contrast to the MIC of isogenic parent strains and E. coli clinical isolates, except Rf antibiotics. The induction multiplicity of Mar mutants by salicylate (SAL) was approximately the same, 2 to 10-fold, and 2 to 25-fold increase of MIC, in case of E. coli clinical isolates, Mar mutants derived from MC4100, and W3110, respectively.
Ampicillin ; Anti-Bacterial Agents ; Chloramphenicol ; Ciprofloxacin ; Drug Resistance, Microbial* ; Erythromycin ; Escherichia coli* ; Escherichia* ; Humans ; Mutation Rate ; Nalidixic Acid ; Parents ; Rifampin ; Tetracycline

Cervical intraepithelial neoplasia in human consist of dysplasia of various developmental stages and squamous cell carcinoma in situ of various types. These lesions can be diagnosed cytologically on cervico-vaginal smears, although the diagnostic reproducibility is limited. To obtain the objects morphologic distinction between normal squamous epithelial cell in different maturation, different stages of dysplastic cells and varieties of in situ carcinoma cells, Kontron IBAS-1 imaging analyzer was applied for the measurement of nuclear and cytoplasmic areas of each categorised cells. The followings are results obtained: 1) Nuclear and cytoplasmic areas of superfical (36.9 micrometer2, 2319.9 micrometer2) intermedicate (45.7 micrometer2, 2989.7 micrometer2) and parabasal cells (50.8 micrometer2, 432.7 micrometer2) of normal squamous epithelium origin are mostly distinctive between cell types. However, cytoplasmic areas of both superficial and intermediate cells and nuclear areas of both intermediate and parabasal cells are not significantly different. 2) Normal squamous cells and various dysplastic cells show obvious difference in their nuclear and cytoplasmic areas, while difference between cytoplasmic areas of both parabasal (432.7 micrometer2) and severe dysplastic cells (409.7 micrometer2) are not statistically significant. 3) No statistical difference is observed in between nuclear areas of both moderate dysplastic (112.3 micrometer2) and severe dysplastic cell (117.6 micrometer2). 4) Varieties of carcinoma in situ cells and severe dysplastic cells are in difference in their nuclear and cytoplastic areas, whereas nuclear areas from both in situ carcinoma cells (95.3 micrometer2) of large cell type and severe dysplasia (117.6 micrometer2) are not distinctive. The results lead the author to consider that the morphometric analysis for various parameters of cell constituents are of value in making objective distinction between cells from cervical intraepithelial neoplasia in human.
Humans

BACKGROUND: PUVA photochemotherapy has been accepted as an effective mode of treatment for psoriasis. Many combination therapies have been tried to reduce the possible adverse effects of long-term exposure to UV radiation. OBJECTIVE: This study was performed to compare calcipotriol-PUVA combination therapy(D-PUVA) with conventional PUVA in the treatment of Korean psoriasis patients. METHODS: We treated 38 Korean psoriasis patients with conventional PUVA and 12 with D-PUVA. We compared the total number, duration and total UVA dose of PUVA therapy to reach grade 4 between the two groups. We categorized each patient into clearing, improvement, or failure groups based on the therapeutic efficacy, and measured the PASI score at each of the patients visits. RESULTS: The total cumulative dose of D-PUVA phototherapy was significantly smaller than PUVA phototherapy. CONCLUSION: Combining PUVA with a vitamin D analogue, calcipotriol, in the treatment of psoriasis may lead to lowering the risk of long-term exposure to UV radiation with higher efficacy.
Humans ; Photochemotherapy ; Phototherapy ; Psoriasis* ; PUVA Therapy ; Vitamin D

The authors reviewed surgical materials from 20 patients with carcinoma of the extrahepatic biliary system, and a correlation between macroscopic appearance of the tumors with various clinical features and histopathologic findings was made. Microscopically, the tumors were classified into four types; Four (21%) patients had polypoid tumors, six (32%) had nodular growths, five (26%) were scirrhous constricting in type, and four (21%) had diffusely infiltrating type. Histologically all the differentiation in two cases. The degree of differentiation of the tumors was classified into 3 types: 11 (55%) patients were well differentiated, 3(15%) were moderately well and 6(30%) were poorly differentiated. All polypoid tumors were well differentiated and had low stage. No correlation in the degree of differentiation of the tumor with the stage was present. No correlation in clinical symptoms, duration of symptoms, laboratory findings with morphologic findings of the tumors was noted.

This study was performed in order to explore the immunologic relationship between the skin lesions induced by the human serum and the lymphatic organs. For these purposes, the authors induced the dermatitis in the rabbits by the injections of pooled human serum with Freunds complete adjuvant into the skin, and administered prednisolone and azathioprine as immunosuppressive drugs to the rabbits. Immunologic asmy was performed by the measurement of the plasma ceIls and immunogobulin-bearing B lymphocytes in lymph node and spleen. The results were as follows: 1. By the injections of human serum pyroninophilic cells and immunoglobulining B lymphocytes in lymph node and spleen were increased. 2. By the administrations of prednisolone and azathioprine, pyroninophilic cells and immunoglobulin-bearing B lymphocytes in lymph node and spleen were all decre RSCd.
Azathioprine ; B-Lymphocytes ; Dermatitis* ; Humans ; Immunoglobulins ; Lymph Nodes ; Plasma ; Prednisolone ; Rabbits* ; Skin ; Spleen

No abstract available.

Tamoxifen is a nonsteroidal triphenylethylene delivative that has been widely used in the treatment of breast cancer. tamoxifen is indicated for the adjuvant treatment of breast cancer in women following total mastectomy or segmental mastectomy, breast irradiation and chemotherapy. tamoxifen has been shown to have significant benificial effect in the treatment of breast cancer patient as hormonal therapy. However ,there is mounting evidence that tamoxifen may affect other hormon sensitive organs, including the uterus and ovaries. An increased risk of endometrial polyps, endometrial hyperplasia and adenocarcinoma has been reported in tamoxifen treated women. We have met cases of endometrial polyp and endocervical polyp which were associated with tamoxifen use, after modified radical mastectomy for infilterating ductal carcinoma of breast . So we report these cases with the brief review of literatures.
Adenocarcinoma ; Breast ; Breast Neoplasms ; Carcinoma, Ductal ; Drug Therapy ; Endometrial Hyperplasia ; Female ; Humans ; Mastectomy, Modified Radical ; Mastectomy, Segmental ; Mastectomy, Simple ; Ovary ; Polyps* ; Tamoxifen* ; Uterus

The purpose of this experiment was to measure the amounts of nickel and chromium released from a simulated orthodontic appliance in artificial saliva. Simulated mandibular half-arch orthodontic appliances were composed of American Iron and Steel Institute type 304 brackets, Permachrome, Elgiloy, Australian wire, T.M.A. and Nitinol. The amounts of nickel and chromium released from sample were measured with atomic absorption spectrophotometer after 3, 6, 9, 12, 15 days. The cumulative amounts of nickel released from Permachrome, Elgiloy, Australian wire and T.M.A. reached a plateau after 6 days. But the cumulative amounts of nickel released from Nitinol increased continuously. Significant amounts of both nickel and chromium were solubilized from the simulated orthodontic appliances into artificial saliva. After 15 days, total cumulative amounts of nickel were 152.15microgram, 150.27microgram, 134.74microgram, 114.67microgram and 93.39micron from the Elgiloy, Australian wire, Nitinol, Permachrome and T.M.A., respectively. Total cumulative amounts of chromium from Permachrome, Australian wire, Elgiloy, Nitinol and T.M.A. were 100.83microgram, 83.64microgram, 81.61microgram, 14.90microgram and 12.43microgram, respectively. The result showed that nickel released from Elgiloy and chromium released from Permachrome were more than any others.
Absorption ; Chromium ; Iron ; Nickel ; Orthodontic Appliances ; Saliva, Artificial ; Steel

No abstract available.
Child* ; Humans ; Joints* ; Tuberculosis, Osteoarticular*