No abstract available.

PURPOSE: The loss of estrogen and progesterone receptors appeats to be associated with a progression to less differentiated and hormone-independent tumors. The gain of hormone independency over time even in estrogen receptor-positive tumors has become another obstacle to endocrine therapy for breast cancer. We tried to regain the hormone dependency in estrogen receptor-negative breast cancer cells by lipofecting estmgen receptor cDNA. MATERIALS AND METHODS: The mutant human estrogen receptor cDNA (pSGS-HEO) was lipofected into estrogen receptor-negative human breast cancer cell line MDA-MB-231, in an attempt to restore their sensitivity to antiestrogen. Then the effects of 17p-estradiol and tamoxifen were studied by counting viable cell numbers after treating the lipofected cell line with either one or together. RESULTS: Culture medium cantaining phenol red, a weak estrogen, has growth advantages compared with culture medium without it. In both culture conditions, cell growth was most profoundly inhibited in 4 days after lipofection with mutant human estrogen receptor cDNA, which was overcome after that day. Tamoxifen, as an antiestrogen, showed a growth inhibitory effect slightly stronger tban combined conditions of tamoxifen and 17- estradiol compared to estrogen-treated group and to control, and the inhibitory effect was lasted 4 days. CONCLUSION: The temporary induction of estrogen receptor by lipofection with pSGS-HEO on estrogen receptor-negative human breast cancer cell line MDA-MB-231 showed negative growth control on these cells by tamoxifen, indicating that liposome-mediated estrogen receptor transfection may be used as a novel therapeutic strategy for hormane independent human breast cancers in the near future.
Breast Neoplasms* ; Breast* ; Cell Count ; Cell Line ; DNA, Complementary ; Estradiol ; Estrogen Receptor Modulators ; Estrogens* ; Genetic Therapy ; Humans* ; Phenolsulfonphthalein ; Receptors, Progesterone ; Tamoxifen ; Transfection

From january 1968 to Septomber 1977(approximately 10 years) the authors clinically observed 105 cases of malignant curaneous tumors that visited the Department of Dermatology at Chon-nam University Hospital. The results obtained can be summarized as follows: 1) The incidence of curaneous malignat tumors versus the total number of outpatients visitiong the Department of Dermatology was 0.33 2) The age of onset was quite varied but the majority of cases, 71 cases(67.62%), were over 50 years old. #) The ratio of men to women was 1.56:1. 4) Among the 105 cases of malignant cutaneous tumors the most frequently observed type was squamous cell carcinoma, 40 cases(40.0%) The next most frequent rypes were basal cell carcinoma, 19 cases (18.10%) and malgnant melanoma, 12cases(11.43%) 5) The most common predilection sites were the head and neck in which 55cases(52.38%) were observed. Among these cases the face was most commonly affected, 40 cases(38.10%). The predilection sites of the basal cell carcinoma cases were the nose(47.37%), cheek(21.04%) and eyelid(15.79%). Those of the squamous cell carcinoma cases were the lower lip(26.90%), cheek(24,43) and penis(14,29%). Finally that of the malignant melanoma was the plantar surface(58.34%) 6) We observed metastasis only in wquamous cell carcinoma, Among the 42 cases of squamous cell carcinoma seen, I1 cases showed metastasis, Among these I1 cases of metastasis, 9 cases were metastajzed into the regional lymphnodes, and in 3 cases methstsis to the lung was demonstracted. 7) We found no relationship between the presence of a particular kind of original skin lesion or injury and the development of a cutaneous malignant tumor. some original lesions related to the curaneous malignant tumors we mentosem, radiation, sporotrichosis, neurofibromatosis, etc. 8) One or more of the four following methods of treatment were used on 19 of the observed cases: 1) Surgical Operation 2) Irradiation Therapy. 3) Electrosugery, 4) Chemotherapy, In seven cases(Basal cell carcinoma 5 cases, Squamous cell carcinoma 2 cases) a complete cure was seen, while in five cases(Kaposi's sarcoma 1, case Squamous cell carcinoms 4 cases) the curaneout maligant tumor recurred No improvement was demonstrated in two (Squamous cell carcinoma 1 case, Malignant melanoma 1 case) of the cases and in four cases(Squamous cell carcinoma 3 cases, Malignant Melanoma 1 case) no prognosis could be made because the patients did nor retum to the clinic to complete treatment.
Age of Onset ; Carcinoma, Basal Cell ; Carcinoma, Squamous Cell ; Dermatology ; Drug Therapy ; Female ; Head ; Humans ; Incidence ; Lung ; Male ; Melanoma ; Middle Aged ; Neck ; Neoplasm Metastasis ; Neurofibromatoses ; Outpatients ; Prognosis ; Sarcoma ; Skin ; Sporotrichosis

No abstract available.
Hemifacial Spasm*

No abstract available.
Hemorrhagic Fever with Renal Syndrome* ; Pregnancy*

No abstract available.

Diagnostic radiologic studies for angiosarcoma are usually non-specific, but selective angiography is notablyexceptional, and there had been a few reports of CT or US featurs of hepatic or splenic angiosarcoma. We recentlyexperienced a case of hepatic and splenic angiosarcoma demonstrated by CT, US and selective angiogram in34-year0old man.
Angiography ; Hemangiosarcoma

No abstract available.
Muscle, Smooth* ; Smooth Muscle Tumor*

Cribriform-morular variant of papillary thyroid carcinoma is an unusual and peculiar subtype of papillary thyroid carcinomas. It occurs both sporadically and in association with familial adenomatous polyposis. We report here on two cases of cribriform-morular variant of papillary thyroid carcinoma in a 33-year-old woman and in a 21-year-old woman. On gross examination, both cases were multicentric. The first case showed two well-encapsulated yellow solid masses in the right (2.0 cm) and the left lobes of the thyroid gland (0.5 cm). The second case showed four well-encapsulated gray-white solid lobulating masses and nodules in the right (4.5 and 1.2 cm) and the left lobes (1.1 and 0.8 cm) of the thyroid gland. Microscopically, both cases exhibited an intricate blending of papillary, cribriform, trabecular, spindle, and solid patterns of growth with morular areas. Typical nuclear features of papillary carcinomas were focally seen. Immunohistochemically, the tumor cells were positive for thyroglobulin, thyroid transcription factor-1 (TTF-1), and beta-catenin, but were negative for calcitonin.
Adenomatous Polyposis Coli ; Adult ; beta Catenin ; Calcitonin ; Carcinoma, Papillary ; Female ; Humans ; Thyroglobulin ; Thyroid Gland* ; Thyroid Neoplasms* ; Young Adult

The ultraviolet radiation (UVR) is known to be a potent modulator of many host immune functions and the exposure of experimental animals to the inflammatory effects of UVR induces depressions in their ability to initiate and effectuate various types of cellular immune responses. In this study, the effects of UV-B (280 320 nm) radiation on resistance to a facultative intracellular bacterium, Listeria monocytogenes (LM), were examined at the cellular level. The numbers of cultivable LM recovered from the spleens of UV-B-irradiated mice were decreased at 2 days postinfection compared with those of untreated control mice. However, the acquired immunity, developed 7 days after immunization with streptomycin (SM)-sensitive LM, in either UV-irradiated, LPS- or IL-1-pretreated mice was less stronger than that developed in untreated, control mice. To elucidate the possible mechanisms underlying the observation that UVR did increase innate immunity but decreased acquired immunity of mice to the infection with LM, the effects of UVR of mice on the production of IFN-r by activated splenocytes and TNF-a by peritoneal macrophages were assessed. Activated splenocytes from UV-irradiated mice exhibited a reduced capacity to produce IFN-r and cultured peritoneal macrophages produced more TNF-a in the presence of LPS during 24 hours after UV radiation. Though TNF-r activity was not detected in the sera of LM-infected mice, intravenous LPS injection induced TNF-r production and UVR decreased TNF activity in sera obtained from LM-infected mice with LPS induction 9 days after irradiation. Although Ia-negative macrophages were predominant in the peritoneal macrophages from untreated control mice, the infection of mice with LM caused a marked increase in Ia expression on peritoneal macrophages. However, UVR resulted in decreased expression of Ia molecule on the peritoneal macrophages during the LM infection. These findings suggest that the dual effects of UVR on the innate and acquired immunity of mice to the LM infection may be associated with altered capacities of splenocytes and peritoneal macrophages of the mice to produce cytokines, in addition to decrease of la molecule expression on the macrophages.
Adaptive Immunity ; Animals ; Cytokines ; Depression ; Immunity, Cellular ; Immunity, Innate ; Immunization ; Listeria monocytogenes* ; Listeria* ; Macrophages ; Macrophages, Peritoneal ; Mice* ; Spleen ; Streptomycin ; Tumor Necrosis Factor-alpha*