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We have previously shown that crude water extract of Euonymus alatus(EA) has strong prophylactic effect against chemically induced-and tumor cell implanted-cancer, and that the mechanisms responsible for its anti-tumor effects were due to nonspecific enhancement of the NK cell activities and the cell mediated immunity. However, it was unknown that any components of crude extract did work so, since it consisted of several components. In this paper, we fractionated the crude water EA-extract into several fraction such as hexane-, ethyl ehter-, ethyl acetate-, n-buthanol- and water soluble-fraction, and screened the immmune regulating activities of each fraction by the evaluation of lymphokine production and activated lymphocyte proliferation. As a result of the component fraction of EA-extract, it was found that n-butanol fraction was a potent immunostimulator, and the remained water soluble fraction also contained some stimulator. But, other fraction did not showed any remarkable effect. It is therefore suggested that EA-glycosides in n-butanol fraction may be new one of the potent-biological response modifies. The present study was also undertaken in an efforts to investigate the effects of elm-bark (EB, Ulmus clavidiana var. japonica), which has been used for curing ulcer and inflammation as a folk medicine without any kind of experimental evidence to support this, on the cellular- and humoral-immune response, lymphocyte function and NK cell activities in mice. Regardless of time and duration of EB-treatment, Arthus reaction and antibody response to SRBC were not modified by EB, but delayed hypersensitivity to SRBC was significantly enhanced only when EB was treated prior to SRBC-sensitization. EB slightly inhibited the proliferation responses of splenocytes to PHA-stimulation, but it significantly augmented the responses of these cells to S. aureus Cowan 1- and Con A-activation, and these effects were manifested only when EB was added at culture initiation. EB did not influence lg secretion of spleen cells but it significantly augmented the Con A-indeuced IL 2 and MIF production of splenocytes. NK cell activities of splenocytes were markedly rised when effector cells were pretreated with EB and this augmentation was due to the increase of binding affinity of effector cells to target cells and the target cell lytic activities of effector cells. These results led to the conclusion that EB triggers increase of cellular immune responses such as delayed hypersensitivity, lymphokine production and NK cell activities. Also these results suggested that EB contains potent immune stimulants, which may provide the rational basis for their therapeutic use as one of the new biological response modifiers. Key words : Euonymus alatus, Ulmus clavidian var. japonica, immune-stimulators, DTH, NK cell activity, lymphocyte functions.

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 °á°ú: ¸ðµç ȲĥÃßÃâ¹°ÀÌ HSCs¿¡¼­ TGF-¥â1À¸·Î À¯µµÇÑ ¥á-SMA mRNA ¹ßÇöÀ» ÇöÀúÇÏ°Ô ¾ïÁ¦ÇÏ¿´À¸¸ç, ÃßÃâ¹°Áß¿¡¼­ Çí»êÃßÃâ¹°(DMH)°¡ °¡Àå ³ôÀº ¾ïÁ¦È¿°ú¸¦ º¸¿´´Ù. DMH°¡ TGF-¥â1·Î À¯µµµÈ ¥á-SMA, CTGF, FN-EDAÀÇ À¯ÀüÀÚ ¹ßÇöÀ» ³óµµ ÀÇÁ¸ÀûÀ¸·Î ¾ïÁ¦ÇÏ´Â °ÍÀ» RT-PCR ¹× Western blot ºÐ¼®À¸·Î È®ÀÎÇÏ¿´°í, ¥á-SMAÀÇ ¹ßÇöÀº ¸é¿ªÁ¶Á÷È­ÇÐ ¿°»ö¹ýÀ¸·Î ´Ù½Ã È®ÀÎÇÏ¿´´Ù. DMEEÀÇ ¾ÈÀü¼º, ÃßÃâ¼öÀ², Ç×»êÈ­ È¿´ÉÀ» °í·ÁÇÏ¿© µ¿¹°½ÇÇèÀÇ Èĺ¸ÃßÃâ¹° ¿ø·á·Î »ç¿ëÇÏ¿´´Ù. DMEEµµ HSCs¿Í Hs27¿¡¼­ ¼¶À¯È­ÀÇ ÁöÇ¥À¯ÀüÀÚÀÎ ¥á-SMA°ú CTGF mRNAsÀÇ ¹ßÇöÀ» ³óµµ ÀÇÁ¸ÀûÀ¸·Î ¾ïÁ¦ÇÏ¿´´Ù. DMEE´Â HSCs¿Í Hs27ÀÇ Áõ½Ä°ú À̵¿À» ³óµµ ÀÇÁ¸ÀûÀ¸·Î ¾ïÁ¦ÇÏ¿´´Ù. SD ÈòÁã¿¡¼­ DMEE ÇöŹ¾×(100 mg/kg)À» 6ÁÖ°£ ÁÖ´ç 2ȸ CCl4 º¹°­³» Åõ¿©Àü 30ºÐ¿¡ °æ±¸·Î ÀüóġÇÑ °æ¿ì CCl4¿¡ ÀÇÇÑ Ã¼Áß °¨¼Ò¸¦ ¾ïÁ¦ÇÏ¿´À¸¸ç, ¸¶Áö¸· CCl4Åõ¿©ÈÄ ´ÙÀ½ ³¯ Ç÷ûÀÇ AST(aspartate aminotransferase) ¿Í ALT(alanine aminotransferase)ÀÇ Áõ°¡ÀÇ °¨¼Ò°¡ ¾ç¼º´ëÁ¶±ºÀÎ ½Ç¸®¸¶¸°º¸´Ù ¿ì¼öÇÏ¿´´Ù. °£Á¶Á÷ÀÇ ¿°»ö¿¡¼­ DMEE¿Í ½Ç¸®¸¶¸° Åõ¿©±ºÀº CCl4 ´Üµ¶ Åõ¿©±º°ú ºñ±³½Ã °£¼¼Æ÷ÀÇ ¼ÒÆ÷È­ º¯È­°¡ Àû¾ú°í Ç÷°üÁÖº¯À¸·Î ¹æ»çµÇ´Â Äݶó°Õ ¼¶À¯ °Ý¸·ÀÌ ¾àÇÏ°í ºÒ¿¬¼ÓÀûÀ¸·Î °üÂûµÇ¾ú´Ù.
 
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Chionanthus retusa.(Chionanthus retusa LINDLEY ET PAXTON) leaves were investigated to process it as the functinal food. Some chemical components and antioxidative, nitrite scavenging and antimicrobial activities of solvent extracts derived from leaves of the Chionanthus retusa. were examined, the biological activities of that were identified. The compound 1 was isolated from the leaves of Chionanthus retusa, and their structures were identified with 2D-NMR(HOMO-COSY, HETERO-COSY, HMBC) technigue as well as Mass. The biological activity and kinetic study of isolated compounds were tested with mushroom tyrosinase. The results obtained were as follows; 1. Among the proximate composition of Chionanthus retusa, nitrogen free extract, crude protein and crude fiber contents were relatively high. Of the mineral component contents, Ca and K was maintained relatively higher level in leaves. Among free sugars, glucose was the highest contents in 32.55 mg£¥, sucrose was 14.11 mg£¥. Of the vitamin C component was 16.55 mg£¥. 2. A particular total amino acid was high level in lysine(103.16 mg£¥). Among fatty acid compositions of 34.21 area£¥ in leaves, parmitic acid was higher in polyunsaturated fatty acid fraction, while compositions of 30.36 area£¥, oleic acid was higher in saturated fatty acid fraction. 3. Ethyl acetate fraction and butyl alcohol fraction from a series of solvent fractionation of methanol extract showed better results in the antioxidative activity and nitrite scavenging activity. A particular reducing power was high level in ethyl acetate fraction. 4. Ethyl acetate fraction of Chionanthus retusa. leaves gave best antimicrobial activity ; 18 mm, 16 mm clear zone for Bacillus cereus, Escherichia coli respectively. 5. Bioactive compound 1 was isolated from butyl alcohol fraction of Chionanthus retusa. leaves. The structure are identified as luteolin - 4' - O -glucoside. ¢·±×¸² »ðÀÔ¢¹(¿ø¹®À» ÂüÁ¶Çϼ¼¿ä) 6. IC_(50) value of the DPPH free radical scavening activity of compound 1 was 6.3 §¶/mL. Tocopherol (IC_(50) 3.8 §¶/mL), BHT (IC_(50) 4.2 §¶/mL). 7. IC_(50) value of luteolin - 4' - O - glucoside against mushroom tyrosinase was IC_(50) 23.2 §¶/mL. In kinetic study of isolated tyrosinase inhibitor : compound 1 was shown competitive pattern in analyzing with Lineweaver-Burk plots.

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