• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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• pp.182.1-182.1
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• 2003

Flavonoids with oxygen atoms are known to have potent biological effect.They have been studied long as major antioxidants which protect cell membranes. Recent medical surveys show that increased intake of selenium decreases the risk of breast, colon, lung and prostrate cancer by preventing free radical generation. The flavonoids, isoflavonoids, and coumarins which form the bulk of these compounds are very polar and have limited use as drugs which have to pass through BBB(Brain Blood Barrier)The non-polar property is increased by exchange oxygen to selenium as a part of heterocyclic compound. (omitted)

• 생명과학회지
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• 제28권7호
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• pp.819-826
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• 2018

와송(둥근바위솔, Orostachys japonicus, OJ)은 면역조절, 항노화, 항산화, 독성제거 등의 치료적 효과를 가진 약용식물로 알려져 있는데, 본 연구에서는 인체대장암세포에 대한 재배 와송의 항암효과를 규명하고자 하였다. 인체대장암세포주 SW480에 와송열수추출물을 72시간 동안 처리한 결과, 대장암세포의 생존율은 농도-의존적으로 유의하게 감소하였다. 또한, 와송은 SW480 세포의 증식과 이주를 억제하는 것으로 나타났는데, 대조군의 스크래치 gap은 24시간부터 유의하게 감소하는 반면, 와송열수추출물을 처리한 실험군 I과 II의 스크래치 gap은 48시간부터 감소하기 시작하였다. 특히 실험군 I의 스크래치 gap은 72시간까지 유의하게 유지되었다. 와송이 생체 내에서 종양의 형성에 어떠한 영향을 미치는지 알아보기 위하여 대장암세포 주사 전, 31일 동안 수컷 C57BL/6 마우스(4주령)에게 와송열수추출물을 경구로 자유 섭취하게 하였다. 이후 SW480 세포($1{\times}10^7cells/100{\mu}l$)를 피하로 주입한 후 7일, 14일 그리고 28일에서 종양의 형성을 관찰하였고, 각 실험동물을 희생하여 종양의 무게와 부피($mm^3$)를 측정하여 비교 분석하였다. 와송열수추출물을 섭취하는 동안 실험군 I, II의 체중은 대조군에 비해 지속적으로 유의하게 증가하였다. SW480 세포 주입 이후 모든 실험군의 체중은 감소하였으나, 세포 주입 후 14일부터 와송 섭취 실험군의 체중은 유의하게 증가하는 것으로 나타났다. 대장암세포 주입 후 7일과 14일에서 와송을 섭취한 실험군의 종양 무게와 부피는 대조군보다 높았으나, 28일에서는 대조군보다 낮게 나타났고, 특히 실험군 II에서 종양 무게와 부피는 유의하게 감소하는 것으로 확인되었다. 이상의 결과를 통해 와송이 인체 대장암세포의 성장, 증식 및 이주를 억제하며, 생체 내 종양형성(tumorigenesis)을 예방적으로 억제함을 알 수 있었다. 따라서, 재배 와송은 천연 항암제 소재로서 활용될 가능성을 가지는 것으로 보이며, 이에 대한 심층적인 연구가 필요할 것으로 사료된다.

• 한국식품위생안전성학회지
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• 제25권3호
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• pp.269-277
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• 2010

본 연구에서는 azoxymethane (AOM)과 dextran sodium sulfate (DSS)로 유도된 대장 발암과정에 대한 셀레늄의 방어 효과를 조사하였다. 셀레늄 결핍(0.02 ppm Se), 정상(0.1 ppm Se), 과다(0.5 ppm Se)사료를 12주간 식이로 급여하여 혈액검사와 대장암 발생의 초기단계인 aberrant crypt foci (ACF)수를 측정했으며, 암 발생율을 조사하였다. ICP-AES를 사용하여 간의 셀레늄 농도를 측정하였으며, 또한 셀레늄포함 항산화효소인 glutathione peroxidase (GPx) 활성을 알아보았다. 또한 TUNEL assay와 PCNA, $\beta$-catenin에 대한 면역조직 염색을 수행하였다. ACF 수 및 종양 발생률에 있어서, 셀레늄과다사료를 급여한 군이 정상셀레늄사료를 급여한 군보다 낮았으며, 셀레늄결핍사료를 급여한 군은 오히려 ACF 수 및 종양 발생률이 높았다. GPx 활성은 셀레늄의 섭취가 과다한 군에서 높게 나타났으며, 이 때, TUNEL에서 apoptotic positive cell이 증가하는 것을 확인했다. 또한 셀레늄의 섭취가 과다한 군에서 PCNA와 $\beta$-catenin의 발현이 감소됨을 볼 수 있었다. 본 마우스 모델실험에서 셀레늄은 여러 기전에 의해 대장암 발생을 억제할 수 있을 것으로 사료된다.

• Food Science and Biotechnology
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• 제15권5호
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• pp.792-798
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• 2006

The probiotic characteristics of a total of 137 lactic acid bacterial strains isolated from soybean paste were investigated. Among those tested, the D37 strain was selected as a probiotic bacteria due to its acid and bile tolerance, and its strong anti-cancer and antibacterial activities. The D37 strain showed highly stable viability at acidic pH for 2 hr, and was very stable in 10% bovine bile. The viability of human colon cancer HT-29 cells was inhibited more than 60% at a $200\;{\mu}/mL$ concentration of D37 cell-free culture supernatant, and the degree of inhibition was concentration-dependent. The D37 strain showed a wide range of antibacterial activities against food-borne pathogenic bacteria such as Escherichia coli O157, Listeria spp., Vibrio spp., Salmonella spp., and Staphylococcus aureus. According to phenotypic characteristics and the utilization of various sugars, the D37 strain was identified as Lactobacillus cellobiosus.

• BMB Reports
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• 제40권2호
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• pp.142-150
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• 2007

Epigenetic alterations, represented by aberrant DNA methylation, are deeply involved in human cancers. In gastric cancers, tumor-suppressor genes are inactivated more frequently by promoter methylation than by mutations. We recently showed that H. pylori infection, a potent gastric carcinogenic factor, induces methylation of specific genes in the gastric mucosae. When the methylation levels were analyzed in the gastric mucosae of healthy volunteers, cases with a single gastric cancer, and cases with multiple gastric cancers, who have increasing levels of risks for gastric cancers, there was a significant increasing trend in the methylation levels among the individuals without current H. pylori infection. This finding unequivocally showed the presence of an epigenetic field for cancerization. The degree of the field defect was measured more conveniently using methylation levels of marker genes than using those of tumor-suppressor genes. The presence of an epigenetic field for cancerization has been indicated for liver, colon, Barrett's esophageal, lung, breast, and renal cancers. Since decreased transcription is involved in the specificity of methylated genes, it is likely that specific genes are methylated according to carcinogenic factors. These findings emphasize the usefulness of DNA methylation as a marker for past exposure to carcinogens and future risk of cancer development.

• Journal of Chest Surgery
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• 제23권2호
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• pp.285-298
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• 1990

The records of 67 patients who had been operated as an esophageal cancer during the period from 1973 to 1989 at the Department of Thoracic and Cardiovascular Surgery, Hanyang University Hospital were reviewed retrospectively. The results were summarized as follows ; The age ranged from 28 years old to 80 years old. The highest incidence was 5th decades, then 6th decades, and the incidence of male was 10 times as the incidence of female[M:F= 10.16: 1]. The locations were lower esophagus 44%, middle esophagus 38.8%, upper esophagus 11.9% and cervical esophagus 4.4% The frequent symptoms were dysphagia [88%], epigastric or substernal pain and discomfort [29.8%], weight loss [20.8%], and laryngeal dryness [1.4%]. The most common interval between the onset of dysphagia and admission was 2-3 months; 82% of patients was within 6 months, The cancer consisted of stage I [3%], stage II [11.9%], stage III[47.6%], and stage IV [33.7%] The resectability of cancer was 67%. The organs of substitute were stomach in 21 cases, right colon 6 cases, and jejunum in 8 CRSCS. The relation between invasion of tumor and lymph node metastasis was analyzed: mucosal involvement: 1 case/2case, muscle invasion; 0/2 full thickness; 4/6, adjacent structure 7/12. Postoperative complications were pneumonia, pleural effusion, hoarseness, mediastinitis, anastomosis site leakage, reoperation due to stenosis, chylothorax, empyema, mechanical ileus, wound infection, meat impaction at anastomosis site, and repair of gastrostomy site leakage. Adjuvant therapies were irradiation [15cases], chemotherapy [14cases], and Bougie dilatation [4 cases],

• Nutrition Research and Practice
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• 제12권5호
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• pp.365-370
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• 2018

BACKGROUND/OBJECTIVES Oxidative stress is a major cause of cancer. This study investigated the effects of the ethanol extracts from germinated and non-germinated Keunnunjami rice, a blackish-purple pigmented cultivar with giant embryo, on selected human cancer cell lines and on the antioxidant defense system of mice fed with a high-fat diet. MATERIALS/METHODS: High fat-fed mice were orally administered with either distilled water (HF) or extracts (0.25%, w/w) from brown (B), germinated brown (GB), Keunnunjami (K), and germinated Keunnunjami (GK) rice. RESULTS: In comparison with the brown rice extract, Keunnunjami extract showed higher anticancer effect against cervical and gastric cell lines but lower anticancer activity on liver and colon cancer cells. Mice from the HF group showed significantly higher lipid peroxidation and lower antioxidant enzyme activities than the control group. However, the oxidative stress induced by high-fat diet markedly decreased in B, GB, K, and GK groups as compared with the HF group. CONCLUSIONS: Germination may be an effective method for improving the anticancer and antioxidative properties of Keunnunjami rice and extracts from germinated Keunnunjami rice may serve as a therapeutic agent against cervical and gastric cancers and oxidative damage.

• 대한기관식도과학회지
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• 제9권1호
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• pp.30-38
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• 2003

Cancers of the cervical esophagus occur uncommonly, but treatment is remaining a challenging problem and surgery demands special knowledge of abdominal, thoracic, and neck surgery. The primary risk factor is chronic heartburn, leading to a sequence of esophagitis, Barrett's esophagus, reflux esophagitis and etc. Among the various treatment modalities, Surgery is still a mainstay of treatment. The main aim of surgery is not only oncologically adequate resection but also preservation or restoration of physiologic functions, such as deglutition and phonation. Surgical treatment of cervical esophageal cancer is influenced by special problems arising from tumor factors, patient factors and surgeon factors. Complete clearance of loco-regional disease and prevention of postoperative complications are of particular importance for the improvement of long-term survival in patients with these cancers. So the cervical and thoracic extension of these tumors usually required an extensive lymphadenectomy with primary resection. Radical resection of the primary site almostly include sacrifice of the larynx, but the voice could be rehabilitated with various methods, such as tracheoesophageal prosthesis or tracheoesophageal shunts, etc. Restoration of the esophageal conduit can be performed using gastric or colon interposition, radial forearm free flap or jejunum free flap, etc. Recently, the advances of radiation therapy and chemotherapy will enable less extended resections with greater rates of laryngeal preservation. At initial presentation, up to 50％ to 70％ of patients will have advanced locoregional or distant disease with virtually no chance for cure. Patients with advanced but potentially resectable esophageal cancer are generally treated by surgery with some form of neoadjuvant chemotherapy, radiotherapy, or both, with 5-year survivals in the 20％ to 30％ range. So the significant adverse factors affecting survival should be taken into account to select the candidates for surgery.

• Journal of Gastric Cancer
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• 제12권1호
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• pp.49-52
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• 2012

Through the advent of surgical techniques and the improvement of laparoscopic tools including the ultrasonic activated scissor, laparoscopic gastrectomy has been increasingly used in far more cases of benign or malignant gastric lesions for the benefit of patients without compromising therapeutic outcomes. Even though possible complications provoked by the ultrasonic activated scissor can be prevented during the procedure with increasing advanced laparoscopic experience and supervision, unexpected late complications after the operations rarely occur. An extremely rare case of left incarcerated diaphragmatic hernia of the transverse colon developed in an 81-year-old female patient as a late complication, 8 months after laparoscopy-assisted total gastrectomy for gastric cancer, with laparoscopy successfully resumed and without the need to sacrifice any portion of the bowel.

• Journal of Acupuncture Research
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• 제23권6호
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• pp.45-60
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• 2006

Objectives : This study was guided to estimate inhibitory effects against hepatic metastasis and activation of immunocytes by Carthami Semen Herbal Acupuncture. Methods : Colon26-L5 carcinoma cells were injected through hepatic portal vein to induce hepatic metastatic cancer. Changes in weight, morphology of the cancer were estimated and cytokine level was analyzed to produce immunological changes. Results: The experimental group was significantly decreased metastatic size and proliferation compared with the control group. Observing immunocytes from the spleen of experimental group T-lymphocytes were significantly increased. As compared with control group, the differentiation of total T cell, helper T cell, cytotoxic T cell, Macrophage and NK cell was increased. Measuring the level of cytokine $IFN-{\gamma}$ which stimulates Th 1 was significantly increased in splenocyte with Con A stimuli. $IFN-{\gamma}$ and IL-12 were significantly increased in peritoneal exudate macrophage with LPS stimuli. Conclusion : These findings strongly indicate Carthami Semen Herbal Acupuncture improves immunity to inhibit the growth of cancer and metastasis.