• Natural Product Sciences
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• 제13권1호
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• pp.78-84
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• 2007

Schizandra chinensis fruits (SC) have been used as a traditional Oriental medicine for treatments of many stress-induced diseases. In the present study, we investigated the protective effect of SC aqueous extract(SC-Ex) in the inflammatory diseases of intestine using a mouse model of ulcerative colitis. An experimental colitis was induced by daily treatment with 5% dextran sulfate sodium (DSS). SC-Ex was orally administered from day 2 of DSS treatment in a dose-dependent manner. Administration of SC-Ex reduced significantly clinic signs of DSS-induced colitis, including body weight loss, shorten colon length, increased disease activity index, and histological colon injury. Moreover, SC-Ex suppressed significantly not only the activities of myeloperoxidase (MPO) and chymase, but also the expressions of $TNF-{\acute{a}}$ and COX-2 in DSS-treated colon tissues. Inhibitory effect of SC-Ex was effective at a dose over 20 mg/kg. Our results indicate that SC-Ex may possess therapeutic effect on the development of DSS-induced colitis.

• Biomolecules & Therapeutics
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• 제27권5호
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• pp.466-473
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• 2019

Angelica gigas has been used as a Korean traditional medicine for pain relief and gynecological health. Although the extracts are reported to have an anti-inflammatory property, the bioactive compounds of the herbal plant and the effect on T cell responses are unclear. In this study, we identified decursinol angelate (DA) as an immunomodulatory ingredient of A. gigas and demonstrated its suppressive effect on type 17 helper T (Th17) cell responses. Helper T cell culture experiments revealed that DA impeded the differentiation of Th17 cells and IL-17 production without affecting the survival and proliferation of CD4 T cells. By using a dextran sodium sulfate (DSS)-induced colitis model, we determined the therapeutic potential of DA for the treatment of ulcerative colitis. DA treatment attenuated the severity of colitis including a reduction in weight loss, colon shortening, and protection from colonic tissue damage induced by DSS administration. Intriguingly, Th17 cells concurrently with neutrophils in the colitis tissues were significantly decreased by the DA treatment. Overall, our experimental evidence reveals for the first time that DA is an anti-inflammatory compound to modulate inflammatory T cells, and suggests DA as a potential therapeutic agent to manage inflammatory conditions associated with Th17 cell responses.

• 한국자원식물학회지
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• 제34권3호
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• pp.216-222
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• 2021

Ulcerative colitis (UC) is an inflammatory bowel disease and a chronic gastrointestinal disorder. Rubi Fructus (RF), the fruit of Rubus coreanus Miquel, is known to exert several pharmacological effects including anti-oxidative, anti-obesity and anti-inflammatory properties. However, the improving effect and mechanism of RF on intestinal inflammation is not been fully understood. The purpose of this study was to investigate the regulatory effect of RF on dextran sulfate sodium (DSS)-induced colitis in mice. We evaluated the effects of RF on DSS-induced clinical signs by analyzing weight loss and colon length. The inhibitory effects of RF on inflammatory mediators such as prostaglandin E₂ (PGE₂), cyclooxygenase (COX)-2, as well as the activation of nuclear factor-κB (NF-κB), were determined in colitis tissue. Our data indicated that mice treated with DSS showed clinical symptoms of colitis, including weight loss, colon length decrease and diarrhea. However, we observed that RF treatment significantly improved these clinical symptoms of weight loss, colon length decrease and diarrhea induced by DSS. RF inhibited the enhanced levels of COX-2 and PGE₂ caused by DSS. We also showed that the anti-inflammatory mechanism of RF by suppressing the activation of NF-kB in DSS-treated colon tissues. Collectively, the findings of this study indicate the prospect of developing new drugs from RF for UC treatment.

• Journal of Microbiology and Biotechnology
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• 제34권3호
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• pp.689-699
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• 2024

Colitis is a major gastrointestinal disease that threatens human health. In this study, a synbiotic composed of inulin and Pediococcus acidilactici (P. acidilactici) was investigated for its ability to alleviate dextran sulfate sodium (DSS)-induced colitis. The results revealed that the synbiotic, composed of inulin and P. acidilactici, attenuated the body weight loss and disease activity index (DAI) score in mice with DSS-mediated colitis. Determination of biochemical indicators found that the synbiotic increased anti-oxidation and alleviated inflammation in mice. Additionally, histopathological examination revealed that colonic goblet cell loss and severe mucosal damage in the model group were significantly reversed by the combination of inulin and P. acidilactici. Moreover, synbiotic treatment significantly reduced the levels of IL-1β, TNF-α, and IL-6 in the serum of mice. Thus, a synbiotic composed of inulin and P. acidilactici has preventive and therapeutic effects on DSS-induced colitis in mice.

• Clinical and Experimental Pediatrics
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• 제52권4호
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• pp.504-507
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• 2009

자가면역성 간염, 원발성 담관성 간경화증, 원발성 경화성 담관염은 대표적인 자가 면역성 간질환이다. 이 각 질환의 임상적, 조직학적, 혈청학적 특징이 혼재되어 어느 한 질환으로 진단하기 어려운 경우를 중복증후군(overlap syndrome)이라 하고, 최근 소아에게서도 드물게 보고되고 있다. 한편 경화성 담관염은, 염증성 장질환에서 가장 흔히 동반되는 간담도계질환으로 알려져 있다. 저자들은 궤양성 대장염으로 진단된 환아에게서 간조직 검사, 혈청 검사, 방사선 검사 등을 통해 자가면역성 간염-원발성 경화성 담관염의 중복증후군을 진단하였기에 보고하는 바이다. 염증성 장질환 환아에게서 자가 면역성 간질환 또는 중복증후군 동반여부를 염두에 두어 임상적, 조직학적, 혈청학적 검사를 통해 적절한 진단과 치료가 필요하겠다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제17권1호
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• pp.31-36
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• 2014

Purpose: Infliximab (IFX) is considered safe and effective for the treatment of ulcerative colitis (UC) in both adults and children. The aim of this study was to evaluate the short- and long-term clinical course of IFX in Korean children with UC. Methods: Pediatric patients with UC who had received IFX infusions between November 2007 and May 2013 at Samsung Medical Center were retrospectively investigated. The clinical efficacy of IFX treatment was evaluated at 8 weeks (short term) and 54 weeks (long term) after the initiation of IFX treatment using the Pediatric Ulcerative Colitis Activity Index (PUCAI). The degree of response to IFX treatment was defined as complete response (PUCAI score=0), partial response (decrement of PUCAI score${\geq}20$ points), and non-response (decrement of PUCAI score <20 points). Adverse events associated with IFX treatment were also investigated. Results: Eleven pediatric patients with moderate to severe UC had received IFX. The remission rate after IFX treatment was 46% (5/11) and 82% (9/11) at 8 weeks and 54 weeks after IFX treatment, respectively. All patients who were steroid-dependent before treatment with IFX achieved remission at 54 weeks and were able to stop treatment with corticosteroids, while all steroid-refractory patients failed to achieve remission at 54 weeks after treatment with IFX. Conclusion: Response to IFX treatment after 8 weeks may predict a favorable long-term response to IFX treatment in Korean pediatric UC patients.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제12권2호
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• pp.240-245
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• 2009

만성 염증성 장 질환에서 유발되는 드문 피부 병변인 괴저 농피증은 초기에는 홍반으로 둘러싸인 농포로 시작하지만 빠르게 주변부로 확장되고 염증이 진피 내로 파급 되면서 깊은 궤양이 생겨 피부 함몰을 일으킨다. 초기에 감염성 연부조직염 등으로 오인하여 절개 배농이나 강한 압박 배농을 하게 되면 이 질환의 이상초과민현상 때문에 병변이 악화되는 경향이 있다. 따라서 조기 진단과 습윤-비밀폐 드레싱으로 상처에 가하는 충격을 최소화하면서 상처 부위를 보존하고 2차 세균 감염을 예방하는 것이 초기 치료에 매우 중요하다. 저자들은 궤양성 대장염을 가진 15세 여자에서 발생한 괴저 농피증을 초기 에 압박 배농하여 병변이 빠르게 악화된 증례의 치료 경험을 보고하면서 조기 진단과 초기 치료 대응의 중요성을 강조하고자 한다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제25권6호
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• pp.461-472
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• 2022

Purpose: Golimumab (GLM) is an anti-tumor necrosis factor (TNF)-α antibody preparation known to be less immunogenic than infliximab (IFX) or adalimumab. Few reports on GLM in pediatric patients with ulcerative colitis (UC) are available. This study aimed to review the long-term durability and safety of GLM in a pediatric center. Methods: The medical records of 17 pediatric patients (eight boys and nine girls) who received GLM at the National Center for Child Health and Development were retrospectively reviewed. Results: The median age at GLM initiation was 13.9 (interquartile range 12.0-16.3) years. Fourteen patients had pancolitis, and 11 had severe disease (pediatric ulcerative colitis activity index ≥65). Ten patients were biologic-naive, and 50% achieved corticosteroid-free remission at week 54. Two patients discontinued prior anti-TNF-α agents because of adverse events during remission. Both showed responses to GLM without unfavorable events through week 54. However, the efficacy of GLM in patients who showed primary nonresponse or loss of response to IFX was limited. Four of the five patients showed non-response at week 54. Patients with severe disease had significantly lower corticosteroid-free remission rate at week 54 than those without severe disease. No severe adverse events were observed during the study period. Conclusion: GLM appears to be safe and useful for pediatric patients with UC. Patients with mild to moderate disease who responded to but had some adverse events with prior biologics may be good candidates for GLM. Its safety and low immunogenicity profile serve as favorable options for selected children with UC.

• 대한영상의학회지
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• 제84권3호
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• pp.536-549
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• 2023

염증성 장질환의 두 가지 주요 질환으로 크론병과 궤양성 대장염이 있다. 염증성 장질환이 의심될 때, 최근에는 장벽과 장벽 밖을 모두 평가할 수 있고 다른 질환과의 감별에도 도움을 받을 수 있어 CT 소장조영술이 초기 영상검사로 널리 사용되고 있다. 염증성 장질환이 의심되는 경우, 크론병과 궤양성 대장염과의 구분이 필요하며 대부분의 경우 어렵지 않게 구분이 되나 그렇지 않은 경우가 있어 이를 염증성 장질환-미분류(inflammatory bowel diseaseunclassified)로 구분한다. 궤양성 대장염의 경우 CT 소견은 비특이적인 경우가 많아 영상검사만으로 다른 질환과 감별하기 어려운 경우가 많다. 크론병의 경우 특징적인 CT 소견이 진단에 도움이 되는 경우가 많으나 이를 모방하는 질환들이 있으며 특히 결핵성 장염은 여전히 크론병과 감별이 어려울 수 있다. 최근에는 크론병과 유사한 다발성 궤양과 협착이 있는 환자의 일부에서 SLCO2A1이라는 프로스타글란딘 수송체를 암호화하는 유전자의 돌연변이가 질환의 원인인 것으로 밝혀져 크론병과 감별하기 위해 유전자 검사가 시행되고 있다.

• 대한의생명과학회지
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• 제19권3호
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• pp.188-194
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• 2013

Ulcerative colitis (UC) is an inflammatory bowel disease, which is a chronic gastrointestinal disorder. Adenophorae Radix (AR) has been used as a traditional medicine for various diseases including strengthening cardiac function, allaying a fever, and easing pain and cough. However, the regulatory effects of AR in intestinal inflammation are not yet understood. This study attempted to determine the effect of AR in dextran sulfate sodium (DSS) - induced colitis in mice. The colitis mice were induced by drinking water containing 5% DSS for 7 days. The results showed that mice treated with DSS showed remarkable clinical signs, including weight loss, and reduced colon length. Administration of AR attenuated weight loss, colon shortening and inhibited the levels of interleukin (IL) - 6 in DSS - treated colon tissues. These results provide experimental evidence that AR might be a useful therapeutic medicine for patients with UC.