• 한국응용과학기술학회지
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• 제37권4호
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• pp.830-838
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• 2020

본 연구는 MIA로 퇴행성관절염을 유도한 랫드에 방사선 형질전환 차조기가 골 대사 및 염증 반응에 미치는 효과를 평가하였다. 방사선 형질전환 차조기를 2주 동안 25, 50, 100 mg/kg/day의 용량으로 경구 투여하고 랫드의 우측 관절 내 공간에 MIA를 주입하였다. 이후 동일한 용량을 4주 동안 지속 투여하였다. 혈청 바이오마커와 무릎 관절 분석의 형태학 및 조직병리학적 분석에 기초한 치료 효과를 평가하였다. 대조군 랫드와 비교하였을 때 방사선 형질전환 차조기는 혈청 내 염증 및 골 대사 마커(COX-2, LTB4, MMP-3, COMP)의 생성량을 유의하게 감소시켰다. 이와는 다르게 TIMP-1 및 calcitonin의 생성이 크게 증가하였다. 또한, 방사선 형질전환 차조기는 무릎 연골과 활막을 효과적으로 보존하였다. 그 결과, 방사선 형질전환 차조기는 퇴행성관절염 증상을 예방하고 완화였다. 따라서, 방사선 형질전환 차조기는 퇴행성관절염 관리를 위한 식·의약품 소재로 사용될 수 있다.

• Asian-Australasian Journal of Animal Sciences
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• 제12권8호
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• pp.1251-1257
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• 1999

Two experiments were conducted to determine the effects of roasting and extrusion on nutritional value of conventional and low-inhibitor soy beans for nurser-age pigs. In Exp. 1, 100 weaning pigs (7.5 kg average initial BW) were used in a 35-d growth assay to determine the effects of processing method (roasting in a Rast-A-Tron$^{TM}$ raster vs extrusion in an Insta-Pro$^{TM}$ extruder) on the nutritional value of Williams 82 soybeans with (+K) and without (-K) gene expression for the Kunitz trypsin inhibitor. Treatments were 48% soybean meal with added soybean oil, +K roasted, +K extruded, -K roasted and -K extruded. All diets were formulated to contain 3.5 Mcal DE/kg, with 0.92% lysine for d 0 to 14 and 0.76% lysine for d 14 to 35 of the experiment. The lysine concentrations were 80% of NRC (1988) recommendations to accentuate difference in response to protein quality and lysine availability. For d 0 to 14, pigs fed extruded soybeans (+K and -K) had greater ADG (p<0.001), ADFI (p<0.09) and gain/feed (p<0.01) than pigs fed roasted soybeans. For d 14 to 35 and overall, the same effects were noted, i.e., pigs fed extruded soybeans had greater ADG, ADFI and gain/feed than pigs fed roasted soybeans (p<0.03). Also, pigs fed -K soybeans were more efficient (p<0.008) than pigs fed +K soybeans. In Exp. 2, 150 weanling pigs (7.0 kg average initial BW) were used in a 35-d growth assay. All diets were formulated to contain 3.5 Mcal DE/kg, with 1.25% lysine for d 0 to 14 and 1.10% lysine for d 14 to 35 of the experiment. The lysine concentrations were formulated to be in excess of NRC recommendation to determine if differences in nutritional value of the soybean preparations could be detected in protein-adequate diets. For d 0 to 14 (p<0.06), 14 to 35 (p<0.03) and 0 to 35 (p<0.02), pigs fed extruded soybeans had greater ADG and gain/feed than pigs fed roasted soybeans. Apparent digestibilities of DM, N and GE were greater for diets with extruded soybeans than diets with roasted soybeans and diets with soybean meal and soybean oil were intermediate. The response to extrusion processing was greater with -K than +K soybeans, with pigs fed extruded -K soybeans having the greatest growth performance and nutrient digestibilities and lowest skin-fold thickness of any treatment. In conclusion, extrusion yielded a full-fat soy product of greater nutritional value than roasting. Also, selection against genetic expression of the Kunitz trypsin inhibitor improved nutritional value of the resulting soybean preparations.

• Asian Pacific Journal of Cancer Prevention
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• 제15권12호
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• pp.4809-4813
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• 2014

Endocrine-disrupting chemicals (EDCs) have been reported to interfere with estrogen signaling. Exposure to these chemicals decreases the immune response and causes a wide range of diseases in animals and humans. Recently, many studies showed that licorice (Glycyrrhiza glabra) root extract (LRE) commonly called "gamcho" in Korea exhibits antioxidative, chemoprotective, and detoxifying properties. This study aimed to investigate the mechanism of action of LRE and to determine if and how LRE can alleviate the toxicity of EDCs. LRE was prepared by vacuum evaporation and freeze-drying after homogenization of licorice root powder that was soaked in 80% ethanol for 72 h. We used 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) as a representative EDC, which is known to induce tumors or cancers; MCF-7 breast cancer cells, used as a tumor model, were treated with TCDD and various concentrations of LRE (0, 50, 100, 200, $400{\mu}g/mL$) for 24, 48, and 72 h. As a result, TCDD stimulated MCF-7 cell proliferation, but LRE significantly inhibited TCDD-induced MCF-7 cell proliferation in a dose- and time-dependent manner. The expression of TCDD toxicity-related genes, i.e., aryl hydrocarbon receptor (AhR), AhR nuclear translocator, and cytochrome P450 1A1, was also down-regulated by LRE in a dose-dependent manner. Analysis of cell cycle distribution after treatment of MCF-7 cells with TCDD showed that LRE inhibited the proliferation of MCF-7 cells via G2/M phase arrest. Reverse transcription-polymerase chain reaction and Western blot analysis also revealed that LRE dose-dependently increased the expression of the tumor suppressor genes p53 and p27 and down-regulated the expression of cell cycle-related genes. These data suggest that LRE can mitigate the tumorigenic effects of TCDD in breast cancer cells by suppression of AhR expression and cell cycle arrest. Thus, LRE can be used as a potential toxicity-alleviating agent against EDC-mediated diseases.

• 대한약리학회지
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• 제2권2호
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• pp.3-22
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• 1966

An experimental study was done on rabbits to observe the effects of several anticlonorchial drugs on the pathology of the liver infested with Clonorchis sinensis. After two months of infestation with Clonorchis sinensis by giving $400{\sim}500$ metacercariae by mouth, hexachlorophene, chloroquine 2,2' methylenebis (3,4,6 trichlorophenoxy acetic acid) and Hetol were administered orally and follow up macro-and microscopic studies of the liver pathology were done in 2 to 3 days, one month, 2 months and 3 months after the completion of medications. The results obtained in this study are as follows: 1. In both groups which were administered hexachlorophene piperazine 20mg/kg for seven days or 8mg/kg for 18 days, the macroscopic findings of the liver after 3 months revealed only minimal changes of the color and consistency The histopathological findings were the reduction of fibrosis, pseudolobulation, proliferation and adenomatous hyperplasia of bile ducts, and regeneration of liver parenchyma. 2. In groups which were administered chloroquine phosphate 20mg/kg for 18 days or 40mg/kg for 5 days, and also in groups which were administered dithiazanine iodide 30mg/kg for 18 days or 60mg/kg for 5 days, no significant findings of recovery were observed either macroscopically or microscopically. 3. In the group which was given 20mg/kg of 2,2' methylenebis(3,4,6 trichlorophenoxy acetic acid) for 5 days, prominent healing of the damaged tissues was observed after 2 months, revealing the decrease of fibrous tissue, caliber of bile ducts and adenomatous hyperplasia of the epitherial cells of the bile ducts, and regenerationof liver parenchyma. 4. In the group which was given Hetol 200mg/kg for 5 days, swelling, congestion and eddish-brown discoloration of the liver were noted macroscopically after 3 days of completion of drug administration. Hemorrhage, congestion, necrosis and degeneration of the parenchyma were observed microscopically After 10 days, liver appeared almost normal macroscopically, but marked fat degeneration was noted microscopically. After 2 months, the liver was almost normal in gross appearence with only slight atrophy and also marked healing was observed microscopically, i. e. decrease of fibrous tissue and reduction of the previously enlarged bile duct and the regeneration of the liver parenchyma.

• The Korean Journal of Physiology
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• 제6권2호
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• pp.57-63
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• 1972

In an attempt to better understand the radioprotective effect of reduced glutathione(GSH), and to observe a possible radioprotective effect of Ginseng extract, whole body X-irradiation of 1,200 r was administered to the mouse either independently or immediately following the injection of GSH or Ginseng extract to the mouse intraperitoneally. The non-protein sulfhydryl (NP-SH) and non-protein disulfide (NP-SS) levels of the liver, and NP-SH level of NP-SH of the blood of the mouse were measured at 30, 60 and 120 minutes, and results were compared with the normal. The results thus obtained are summarized as follows; 1) The normal values of NP-SH and NP-SS of the mouse liver were $5.90{\pm}0.46\;{\mu}\;mol/gm\;wet\;wt.,\;and\;3.02{\pm}0.42\;{\mu}\;mol/ml$ wet wt., respectively, and the normal value of NP-SH of NP-SH of the mouse blood was $3.98{\pm}1.29\;{\mu}\;mol/ml$ 2) The injection of both GSH and Ginseng extract produced the highest values of NP-SH in the liver at 30 minutes, but a gradual decrease to the normal was observed thereafter. When X-irradiation alone was applied, the liver NP-SH value was lower than the normal at 60 minutes post-irradiation and thereafter. When Ginseng extract was injected immediately prior to X-irradiation, the liver NP-SH was lower than the normal throughout the experiment with the lowest value at 60 minutes. However, the combination of GSH and X-irradiation produced higher than the normal values throughout the entire experiment. 3) The liver NP-SS value was most significantly elevated at 30 minutes after the injection of GSH, hut the recovery to the normal was observed thereafter. The injection of Ginseng extract produced slightly higher liver NP-SS values at 30 and 60 minutes, but the value at 120 minutes was similar to the normal. The single application of X-irradiation resulted in the lower then normal liver NP-SS values throughout the entire experiment. When GSH was injected price to X-irradiation, the liver NP-SS values were higher than the normal at 30 and 60 minutes followed b the recovery to the normal at 120 minutes. The combination of Ginseng extract and X-irradiation showed generally lower liver NP-SS values throughout the experiment. 4) The blood NP-SH showed the higher than the normal values in all the experimental groups except when GSH was injected prior to X-irradiation alone produced e significantly elevated blood NP-SS value at 30 minutes post-irradiation.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.780-803
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• 2003

Exposure of skin cells, particularly keratinocytes to various nuclear factor-kappaB ($\textrm{NF}_{-{\kappa}}\textrm{B}$) activators [e.g. tumor necrosis factor-$\alpha$, interleukin-1, lipopolysaccharides, and ultraviolet light] leads to phosphorylation and degradation of the inhibitory protein, $\textrm{I}_{{\kappa}}\textrm{B}$. Liberated $\textrm{NF}_{-{\kappa}}\textrm{B}$ is translocated into the nucleus where it can change or alter expression of target genes, resulting in the secretion of extracellular signaling molecules including melanotrophic factors affecting melanocyte. In order to demonstrate the possible role of $\textrm{NF}_{-{\kappa}}\textrm{B}$ activation on the synthesis of melanotrophic factors from the keratinocytes, the activities of $\textrm{NF}_{-{\kappa}}\textrm{B}$ induced by melanogenic inhibitors (MIs) were determined in human HaCaT keratinocytes transfected with $\textrm{pNF}_{-{\kappa}}\textrm{B}$-SEAP-NPT plasmid. Transfectant cells released the secretory alkaline phosphatase (SEAP) as a transcription reporter in response to the $\textrm{NF}_{-{\kappa}}\textrm{B}$ activity and contain the neomycin phosphotransferase (NPT) gene for the dominant selection marker for geneticin resistance. MIs such as niacinamide, kojic acid, hydroquinone, resorcinol, arbutin, and glycolic acid were preincubated with transfectant HaCaT cells for 3 h and then ultraviolet B (UVB) was irradiated. $\textrm{NF}_{-{\kappa}}\textrm{B}$ activation was measured with the SEAP reporter gene assay using a fluorescence detection method. Of the Mis tested, kojic acid ($IC_{50}$/ = 60 $\mu$M) was found to be the most potent inhibitor of UVB-upregulating $\textrm{NF}_{-{\kappa}}\textrm{B}$ activation in transfectant HaCaT cells, which is followed by niacinamide ($IC_{50}$/= 540 $\mu$M). Pretreatment of the transfectant HaCaT cells with the Mis, especially kojic acid and niacinamide, effectively lowered $\textrm{NF}_{-{\kappa}}\textrm{B}$ binding measured by electrophoretic mobility shift assay. Furthermore, these two inhibitors remarkably reduced the secretion level of IL-6, one of melanotrophic factors, triggered by UV-radiation of the HaCaT cells. These observations suggest that Mis working at the in vivo level might act partially through the modulation of the synthesis of melanotrophic factors in keratinocyte.

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2003년도 춘계총회 및 제22차 학술발표회
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• pp.22-39
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• 2003

Biological activity of phenolic compounds in seeds and leaves of safflower (Carthamu tinctorius L.) were evaluated using several in vitro and in vivo assays. Six phenolic constituents were isolated from the seeds and identified as N-feruloylserotonia, N- (p-coumaroyl)serotonin, matairesinol, 8′-hydroxyarctigenin, acacetin 7-O-$\beta$-D-glucoside (tilianine) and acacetin. Six phenolic compounds exhibited considerable antioxidative activity, and especially two serotonins showed potent DPPH radical scavenging activity and antiperoxidative activity against rat liver microsomal lipid peroxidation induced by the hydroxyl radical generated via a Fenton-type reaction. Additionally, six phenolic compounds possessed comparable cytotoxicity against three cancer cells, Hela cell, MCF-7 and HepG2 cell, and particularly acacetin and its glycosides had the most potent cytotoxicity. Moreover, we found that feeding safflower seeds attenuated bone loss, and lowered levels of plasma and liver lipids in ovariectomized rats. Serotonins, lignans and flavones stimulated proliferation of the osteoblast-like cells in a dose-dependent manner (10$^{-15}$ ~10$^{-6}$ M), as potently as E$_2$ (17$\beta$-estradiol). Particularly, serotonins were mainly responsible for bone-protecting and lipid lowering effects in ovariectomized rats. Meanwhile, eight flavonoids, including a novel quercetin-7-O-(6"-O-acetyl)-$\beta$-D-glucopyranoside and seven kown flavonoids, luteolin quercetin, luteolin 7-O-$\beta$-D-glucopyranoside, luteolin-7-O-(6"-O-acetyl)-$\beta$-D-gluco-pyranoside, quercetin 7-O- -glucopyranoside, acacetin 7-O-$\beta$-D-glucuronide and apigenin-6-C-$\beta$-D-glucopyranosyl-8-C-$\beta$-D-glucopyranoside were first isolated and identified from safflower leaf. Among these flavonoids, luteolin-acetyl-glucoside and $\beta$quercetin- acetyl-glucoside showed potent antioxidative activities against 2-deoxyribose degradation and lipid peroxidation in rat liver microsomes. Luteolin, quercetin and their corresponding glycosides also exhibited strong antioxidative activity, while acacetin glucuronide and apigenin-6, 8-di-C-glucoside were relatively less active. Finally, changes in phenolic compositions were also determined by HPLC in the safflower seed and leaf during growth stages and roasting process to produce standardized supplement powerds. These results suggest that phenolic compounds in the roasted safflower seed and leaf may be useful as potential sources of therapeutic agents against several pathological disorders such as carcinogenesis, atherosclerosis and osteoporosis.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제4권1호
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• pp.79-90
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• 1993

대뇌피질에서 somatostatin 함유 신경세포의 생후 발달과정을 규명하고자 생후 1, 2, 3, 4주 및 2, 3개월의 흰쥐 대뇌를 대상으로 면역조직화학적 염색을 시행하여 신경세포의 형태, 크기 및 분포와 대뇌피질 영역별 세포 수의 변화를 관측하여, 아래와 같은 결과를 얻었다. 1) 형태 및 분포의 변화 생후 1주부터 비교적 염색성이 뚜렷한 다양한 형태의 미성숙 신경세포가 대뇌피질 V, VI층에서 관찰되다가 생후 2주에는 세포질내의 염색성이 균일하게 증가되어 있고 여러개의 돌기를 내는 뭇극성세포가 V, VI층뿐 아니라 제 II층에서도 출현하였다. 생후 3주부터는 신경세포체가 점차 II, III층과 V, VI층에 넓게 분포하였고 미성숙한 신경세포는 II, III층에서 보다 많이 관찰되었으며 생후 4주에는 IV, V, VI층에서의 세포의 감소가 뚜렷하여 주로 II, III, IV층에 분포하는 양상을 보였고 미성숙세포는 거의 관찰되지 않았다. 2) 신경세포체의 크기의 변화 세포체의 크기는 생후 2주를 전후하여 일시적으로 증가하여 최대값을 보이다가 이후 점차 감소하여 생후 8주째에 성숙흰쥐에서의 크기가 되었다. 3) 내뇌피질 영역별 신경세포체 수의 변화 전두, 두정 1, 2, 측두 1, 배모양, 섬피질에서는 생후 1주에서 2주째에 걸쳐 큰 차이없이 세포체의 수가 최대로 증가했다가 이후 성숙흰쥐 수준으로 감소하는 양상을 보였으며 측두 3, 후두, 띠, 코주위 피질에서는 생후 2주째에 최대값을 보였다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제4권1호
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• pp.124-132
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• 1993

45명의 틱 증상을 보인 아동들의 임상적 양상을 검토하였고 형제순위별로 나눠 비교하였다. 성비는 14:1로 남자가 압도적으로 많았고 형제순위로는 맏이가 46.7%, 막내가 33.3%. 외동아 15.6%, 쌍생아 4.4%로 맏이가 많았다. 기질성 시사소견은 37.8%에서, 초기발달 이상은 71.1%, 가족관계의 이상이 89.9%에서 보였고 동반 증상들로는 주의력결핍 과잉운동장애 46.7%, 강박장애 17.7%, 격려불안은 24.4%, 범불안, 수면불안은 17.8%, 신체화 증상 및 아뇨가 각각 13.3%, 말더듬 8.9% 외에 분뇨, 우울증 등을 보여 총 84.4%에서 최소한 하나 이상의 동반된 문제를 가졌다. 형제별로 나눠 특징을 비교했을 때 발병 시기에서 현저한 차이를 보였는데 막내 유형은 입학과 연관된 시기에 발병율이 의미있게 높았다.(p<0.01) 쌍생아의 경우는 저 출생체중아가 환아였다. 이들 소견을 종합해볼 때 틱 및 뚜렛 장애의 발현에는 선천적 기질적 요인뿐 아니라 상당한 환경적인 요인이 작용한다고 보겠다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제9권1호
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• pp.3-12
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• 1998

본 연구에서는 청소년 자신의 문제행동에 대한 평가와 부모의 평가가 서로 어떻게 다른지와 각자의 평가에 영향을 주는 변인들을 비교하였다. 일반청소년 3271명을 대상으로 청소년 자신이 평가한 YSR과 부모가 평가하는 K-CBCL을 동시에 실시 한 후 두 평가척도에 공통되는 문항들만으로 요인분석을 실시한 결과 K-CBCL에서는 제1요인으로 공격성/비행요인이 전체변량의 14.08%를 설명하였고 이와 함께 신체적 증상, 사회적 위축, 소란/방해, 우울/불안 등 5개의 요인이 추출되었으며, YSR에서는 제1요인으로 우울/불안/위축요인이 전체변량의 14.23%를 설명하였고 이와 함께 공격성, 신체적 증상, 소란/방해, 인정욕구 등 5개의 요인이 추출되었다. K-CBCL과 YSR의 총 문제행동 점수 평가에 영향을 주는 변인들을 살펴보기 위해 회귀분석을 실시한 결과 부모의 평가와 청소년 평가에서 공통적으로 부모, 친구 등 사회적 관계가 나쁠수록, 학업수행이 나쁠수록 총 문제행동 점수가 높았다. 반면에 청소년 자신의 평가에서는 성, 연령이 중요한 기준이 되며 특히 보고하는 문제유형이 성별에 따라 다른 양상을 나타내었다. 이와 같은 결과는 부모가 자녀의 문제행동을 평가하는 경우 공격성이나 비행 등과 같이 외현적으로 드러난 행동문제가 중요한 기준이 되는 반면, 청소년 자신이 평가하는 경우 우울/불안/위축 등 내재화된 문제 정도를 최우선적으로 자각하게 된다는 점을 시사하며 이에 따른 청소년 평가 및 진단에서의 시사점을 논의하였다.