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저널/프로시딩 상세정보

권호별목차 / 소장처보기

H : 소장처정보

T : 목차정보

Journal of Korean medical science : JKMS 13건

  1. [국내논문]   Effects of IL-7 on human lymphocytes.  

    Kim, H. S. , Kang, C. M. , Findley, H. , Ragab, A. H.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 93 - 98 , 1993 , 1011-8934 ,

    초록

    Interleukin-7 (IL-7) is known as a growth factor for pre B-cell and mature T-cells in human. But in leukemic cells, IL-7 effect is variously reported. To investigate the effect of IL-7 on the cells of childhood acute leukemia we used 3H-Thymidine assay. Twelve Acute lymphoblastic leukemia (ALL), seven T-ALL and three Acute myelogenous leukemia (AML) were involved in this study. Two out of twelve ALL and three out of seven T-ALL bone marrow (BM) cells were stimulated by IL-7 in 3H-Thymidine incorporation. In normal and AML BM cells, IL-7 had no stimulatory activity as in various leukemic cell lines. Two normal peripheral blood T-cells responded to IL-7 dose dependently. We have seen the effect of IL-7 to stimulate T-lineage cells but, for precise conclusion, further study using more purified samples will be needed.

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  2. [국내논문]   Bilateral neuroblastoma in situ associated with microcephaly.  

    Park, W. S. , Chi, J. G.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 99 - 103 , 1993 , 1011-8934 ,

    초록

    We present an autopsy case of a two-day-old female infant with a very unusual combination of neuroblastoma in situ in both adrenals and microcephaly. This baby was born to a 28-year-old mother after 38 weeks of gestation, and died of respiratory difficulty 2 days later. At autopsy, the baby weighted 1,840gm, and the brain was extraordinarily small with a weight of 125gm. The gyral pattern was simplified and irregular. Microscopically massive migration defects, pachygyria, micropolygyria, leptomeningeal glioneuronal islands, small corticospinal tract and heterotopic Purkinje cells in the cerebellum were found. In addition, there were medullary nodules in both adrenals. They measured 0.7 x 0.4cm and 0.7 x 0.3cm, respectively. These nodules showed the typical histological features of undifferentiated neuroblastoma. The tumor nodules were confined to the medullary portion and did not extend to the cortex or contiguous structures meeting the criteria of neuroblastoma in situ. Based on these unusual and seemingly unrelated sets of findings, it is suggested that the histogenesis of neuroblastoma in situ could be a part of the generalized dysontogenic process.

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  3. [국내논문]   Chemosensitization to adriamycin by cyclosporin A and verapamil in human retinoblastoma cell lines.  

    Lee, T W , Yang, S W , Kim, C M , Hong, W S , Youn, D H
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 104 - 109 , 1993 , 1011-8934 ,

    초록

    The chemosensitizing effects of cyclosporin A and verapamil on the cytotoxicity of adriamycin were investigated using MTT assay against two human retinoblastoma cell lines, Y79 and WERI-Rb-1. Y79 and WERI-Rb-1 were totally resistant to doses up to 5.0 micrograms/ml of verapamil. Cyclosporin A inhibited the survival of Y79 and WERI-Rb-1 dose-dependently, however, the maximum inhibition at the highest concentration tested (5.0 micrograms/ml) was less than 50% (% survival at 5.0 micrograms/ml of cyclosporin A: 65.6% and 66.9% in Y79 and WERI-Rb-1, respectively). Combination of cyclosporin A and verapamil did not further inhibit the survival of Y79 and WERI-Rb-1 compared with cyclosporin A alone. Adramycin inhibited the survival of Y79 and WERI-Rb-1 dose-dependently. The chemosensitizing effects of cyclosporin A and verapamil on the cytotoxicity of adriamycin were evaluated in terms of sensitizing index (SI: the ratio of IC50 to adriamycin alone to IC50 to adriamycin in the presence of cyclosporin A and/or verapamil). Cyclosporin A significantly enhanced SI and the addition of verapamil enhanced SI further: SI values at 5.0 micrograms/ml of cyclosporin A, 5.0 micrograms/ml of cyclosporin A plus 1.5 micrograms/ml of cyclosporin A plus 1.5 micrograms/ml of verapamil, 5.0 micrograms/ml of cyclosporin A plus 3.0 micrograms/ml of verapamil were 2.0, 2.6 and 2.8 in Y79 and 2.6, 5.8 and 9.7 in WERI-Rb-1, respectively. These results suggest that cyclosporin A and verapamil are promising chemosensitizers to adriamycin in the treatment of retinoblastoma.

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  4. [국내논문]   Oligodendroglioma in childhood.  

    Wang, K. C. , Chi, J. G. , Cho, B. K.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 110 - 116 , 1993 , 1011-8934 ,

    초록

    Fifteen pediatric (age under 16) cases of oligodendroglioma (ODG) were surgically proven from January 1985 to April 1992 at the Division of Pediatric Neurosurgery, Seoul National University Children's Hospital. To observe the proportion of ODG's in primary intracranial tumors, the location of ODG's and the prognostic significance of the histological grading of ODG's in childhood, the 15 cases of pediatric ODG's were retrospectively analyzed. ODG's accounted for 5.6% of pediatric primary intracranial tumors operated on during the same period. Nine tumors were located in the cerebral hemisphere (3 cases each in the frontal, temporal and parietooccipital lobes), 1 in the thalamus, 2 in the pons-medulla, 2 in the cerebellum and 1 in the thoracolumbar spinal cord. Four tumors were anaplastic and an additional case showed positive cerebrospinal fluid (CSF) cytology for tumor cells. All the cases of anaplasia or positive CSF cytology had a poor outcome. All the seven cases of benign ODG's in cerebral hemispheres presented with seizures which were controlled with or without medication after tumor removal.

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  5. [국내논문]   The thrombolytic effect of lumbrokinase is not as potent as urokinase in a rabbit cerebral embolism model.  

    Kim, J. S. , Kang, J. K. , Chang, H. C. , Lee, M. , Kim, G. S. , Lee, D. K. , Kim, S. T. , Kim, M. , Park, S.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 117 - 120 , 1993 , 1011-8934 ,

    초록

    The purpose of the present study is to determine whether lumbrokinase has an in vivo thrombolytic effect in a rabbit cerebral embolism model. In our previous studies, we found that lumbrokinase, an extract from Korean earth worms, has a strong in vitro fibrinolytic effect without the presence of plasminogen and significant in vivo thrombolytic effects of lumbrokinase in a rat human-clot-induced cerebral embolism model. We established the cerebral embolism model in rabbits by injecting a piece of human clot into the internal carotid artery via the external carotid artery and confirmed the occlusion with angiography. Twenty one rabbits were divided into three groups and 5cc of saline, urokinase of 50,000 u/ml, and equipotent LK were injected intraarterially for 30 minutes into each group of 7 animals. Ten minutes after the end of infusion, an angiogram was performed to confirm the recanalization. Clot lysis occurred in one, six, and one animals in the saline, urokinase and lumbrokinase treated groups respectively. With regard to its in vitro effect, lumbrokinase is not as potent in vivo. Further investigation should be performed to determine the cause of its weakened in vivo effect and to develop a method to potentiate it.

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  6. [국내논문]   Pathological responses to preoperative high-dose methotrexate chemotherapy in osteosarcoma--experience in Korea cancer hospital.  

    Lee, S. Y. , Jeon, D. G. , Kim, S. S. , Jang, J. J. , Cho, K. J.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 121 - 126 , 1993 , 1011-8934 ,

    초록

    During the last decade, many clinical investigators at various cancer centers have reported the efficacy of various chemotherapeutic agents in the treatment of osteosarcoma. The regimens using high-dose methotrexate (HDMTX) with citrovorum factor rescue are now considered to be one of the most effective treatments of choice. From December 1989 to May 1991, sixteen patients with Enneking's stage (Enneking et al., 1980) IIB osteosarcoma of the extremities were treated with a high-dose methotrexate regimen. After two cycles of preoperative chemotherapy, an operation was performed; either limb salvage or amputation. The resected lesions were examined pathologically and classified according to Huvos' criteria. On pathological examination, 8 (50%) cases showed Grade IV; 1 (6.25%) Grade III; 4 (25%) Grade II; and 3 (18.75%) Grade I. The types of surgery performed were tumor prosthesis replacement (11); wide resection with or without reconstruction (2); resection and arthrodesis (1); and amputation (2).

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  7. [국내논문]   Effect of long-term administration of somatostatin analogue on renal enlargement in uninephrectomized-diabetic rats.  

    Kim, Y. S. , Choi, Y. J. , Jin, D. C. , Chang, Y. S. , Yoon, Y. S. , Bang, B. K.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 127 - 134 , 1993 , 1011-8934 ,

    초록

    Recent study has demonstrated that the long-acting somatostatin analogue administration effectively prevented initial renal growth in diabetic and uninephrectomized rats. In the present study we examined long-term effect of somatostatin analogue (Sandostatin) on renal enlargement in uninephrectomized-diabetic rat5. Animals were divided into 4 groups: (1) normal control rats (C) (n = 7), (2) uninephrectomized rats (NPX) (n = 7), (3) uninephrectomized-diabetic rats (NPX + DM) (n = 7) and (4) NPX + DM rats treated with Sandostatin (NPX + DM + Tx) (n = 9). All animals had free access to diet (50% protein) and water during the experimental period. To the NPX + DM + Tx rats, 2.5 micrograms of Sandostatin was given subcutaneously twice a day for 8 weeks. Periodic observations were done at 0, 4 and 8 weeks. After 8 weeks. NPX rats (0.540 +/- 0.017 (SEM)) had higher fractional kidney weights (FKW) (wet kidney wt/body wt) compared to C rats (0.410 +/- 0.014) (p

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  8. [국내논문]   Analysis of the immunologic mechanism of intravesical bacillus Calmette-Guerin therapy for superficial bladder tumors: distribution and function of immune cells.  

    Chung, J. Y. , Lee, E. S. , Lee, W. J. , Kim, H. H. , Min, K. J. , Lee, C.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 135 - 144 , 1993 , 1011-8934 ,

    초록

    Intravesical bacillus Calmette-Guerin (BCG) administration has been used as an adjuvant therapy after transurethral resection for superficial bladder cancer, but the exact mechanisms of its antitumor activity are not yet known. The aim of this study was to characterize the immunologic aspects of antitumor activity of BCG using an animal model. C3H/He inbred mice and murine bladder tumor cell line, MBT-2 were used. The changes in immune cells such as helper T cells, suppressor T cells, macrophages and natural killer cells in the bladder and spleen were analysed by immunohistochemical method in intravesical BCG instilled in normal bladder, MBT-2 implanted after electrocauterization of the bladder mucosa and MBT-2 implanted and intravesical BCG treated group. The changes in natural killer cell activity of the splenocytes and peritoneal lymphocytes were evaluated using 51chromium release assay at regular time intervals following intraperitoneal BCG instillation. The prophylactic anticancer effect was evaluated by observing the tumor growth in the intravesically BCG treated group after intravesical MBT-2 implantation. In immunohistochemical examination, a remarkable infiltration of macrophage and helper T cell was observed in the lamina propria of the bladder, and the helper and suppressor T cells ratio (Th/Ts ratio) was increased after intravesical BCG therapy. In 51chromium release assay, enhanced natural killer cell activity of the splenocytes and peritoneal lymphocytes was observed after intraperitoneal BCG inoculation. The growth of implanted tumor was suppressed following intravesical instillation of BCG. These results suggest that the antitumor activity of BCG is not related to the simple inflammatory reaction but to the local and systemic immune response in which helper T lymphocytes and mononuclear cells play an important role.

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  9. [국내논문]   Seroepidemiological observation of Taenia solium cysticercosis in epileptic patients in Korea.  

    Kong, Y , Cho, S Y , Cho, M S , Kwon, O S , Kang, W S
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 145 - 152 , 1993 , 1011-8934 ,

    초록

    Prevalence survey of neurocysticercosis was made in a mixed epilepsy patients of Changmi Club in Korea. From February 1987 to July 1990, a total of 2,667 randomly selected patients at 27 local centers was tested for their serum levels of anti-Cysticercus antibody (IgG) by enzyme-linked immunosorbent assay. Positive rate of the antibody was 4.0% in the examined patients. The standardized antibody positive rate by provincial population was 3.1%. The rate was the highest in patients living in Cheju Do (8.4%). The patient age brackets of 0 approximately 9 years and over 50-year showed higher positive rates of the antibody. In 750 normal persons who checked up routine physical examination, the antibody positive rate was 2.1% (standardized rate was 1.8%). These seroepidemiological data disclosed for the first time the prevalence of cysticercosis in epileptic patients and in population.

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  10. [국내논문]   The mechanism of c-erbB-2 gene product increase in stomach cancer cell lines.  

    Bae, C. D. , Park, S. E. , Seong, Y. S. , Kimm, S. W. , Park, J. B. , Park, J. B.
    Journal of Korean medical science : JKMS v.8 no.2 ,pp. 153 - 159 , 1993 , 1011-8934 ,

    초록

    c-erbB-2 oncogene encodes a growth factor receptor whose amino acid sequence has extensive homology with human epidermal growth factor receptor. It is frequently overexpressed in human breast, ovary, lung, and stomach cancers, where its overexpression is related significantly to the prognosis. Tl investigate the possible role of c-erbB-2 oncogene in the oncogenesis of stomach cancer, we examined the genetic alterations of c-erbB-2 oncogene in 4 stomach cancer cell lines, SNU-1, SNU-5, SNU-16 and KATO III. There were no differences in c-erbB-2 mRNA level as well as c-erbB-2 gene copy number among them. But gp185-erbB-2, c-erbB-2 gene product, was increased from 2- to 4-fold in SNU-1 and SNU-5 cells, compared with that in SNU-16 or KATO III cells. Our results suggest that post-transcriptional regulation of gp185erbB-2 expression may underlie gp185erbB-2 overexpression in cancer cells.

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