• 생명과학회지
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• 제24권1호
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• pp.20-25
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• 2014

인도메타신은 nonsteroid anti-inflammatory agent로 심각한 위점막 손상을 야기한다. 본 논문에서는 rat의 위점막 손상에 대한 커규민의 치료효과를 규명하였다. 인도메타신 유도 위점막 손상에 대한 커규민의 치료효과를 검증하기 위하여 인도메타신(25 mg/kg)의 경구투여를 통하여 위점막 손상을 유발한 후 다양한 농도(10, 50, 100 mg/kg)의 커규민을 3일간 경구 투여하였다. 실험 결과, 인도메타신의 처리는 위점막에 궤양부위를 증가시킨 반면, 3일간 커규민의 경구투여는 농도 의존적으로 궤양부위를 유의성있게 감소시켰다. 뿐만 아니라, 커규민은 인도메타신에 의해 유도되는 위점막에서의 지질과산화 증가를 상당히 억제시켰고 radical scavenging enzyme인 superoxide dismutase, catalase, glutathione peroxidase의 활성을 농도 의존적으로 증가시켰다. 이상의 결과들을 종합하여 볼 때, 커규민은 인도메타신 유도 위점막 손상을 지질과산화의 억제와 radical scavenging enzymes의 활성화를 통하여 치료한다.

• Journal of Yeungnam Medical Science
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• 제27권2호
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• pp.159-164
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• 2010

Hematoma of gastric wall is very rare, and occasionally associated with coagulopathy, trauma, peptic ulcer disease, and therapeutic endoscopy. Ischemic gastric necrosis is also rare because of the abundant anastomotic supply to the stomach, and it is usually associated with surgery and disruption of the major vessels. Endoscopic submucosal injection of hypertonic saline-epinephrine (HS-E) is a safe, cost-effective, and widely used therapy for hemostasis but it may cause tissue necrosis and perforation. We describe a case of gastric wall hematoma with oozing bleeding after endoscopic gastric mucosa biopsy in 71-year old woman with chronic renal failure and angina pectoris undergoing anti-platelet medication. We injected a small dose of HS-E (7ml) for controlling oozing bleeding. Two days later, endoscopy showed huge ulcer with necrotic tissue at the site of previously hematoma. Therefore we should pay particular attention for hematoma and mucosal necrosis when performing endoscopic procedure in a patients with high bleeding and atherosclerotic risk.

• 대한치과기공학회지
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• 제15권1호
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• pp.27-41
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• 1993

Degree of noise by personal dental laboratory working process and degree of noise by complex dental laboratory working process were measured separtely. The time of exposure to noise greater than 70dB was analyzed. Then, the whole degree of noise in dental laboratory was estimated on the basis of afore-mentioned information. Questionaire were employed to investigate the mental, emotional and physiological effects of noise in dental technicians, The purpose of this study was to provide basic information on keeping dental techneicans who are exposed to noise pollution in good working condition and good health. Results obtained are as follows ; 1. Polishing process in each working part showed high degree of noise greater than 70dB in terms of degree of noise by personal working. 2. Degree of noise by complex working process in each working part was greater than that of personal working process. 3. Time of exposure to noise complex working process the part of porcelain 150min, partial denture 120 min, crown and bridge 100 min, full denture 80 min. 4. Degree of noise by time in dental laboratory was 80dB in general for polishing process and below 75dB for waxing process. 5. Effects of noise on mental and emotional state of dental technicians showed that they felt irritated every day(14%), irritated once in a while(29%) and easily ger mad(19%). 6. Effects of noise on heart and stomach were hyper-gastric acid(38%), gastric ulcer(11%), gastritis(5%), deuodenal ulcer(3%) and weak heart function(32%). 7. Effects of noise in the hearing ability were weak(39%), moderate(33%) and normal(14%) Data presented in this study demonstrated that noise in the dental laboratory exerts profound effect on dental technicians mentally, physiologically and emotionally, in light of the above results, therefore, it appears advisable to devots substantial on the management of working condition and put further(continuing) efforts in the investigation for reducing noise problem.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제23권3호
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• pp.243-250
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• 2020

Purpose: Gastric delta cells (D-cells), which are somatostatin-secreting cells, are the main paracrine inhibitor of acid secretion. The number of D-cells was studied in children presenting with upper gastrointestinal (UGI) disease. Methods: We retrospectively investigated the number of D-cells in the gastric body and antrum through immunofluorescence examinations according to symptoms, endoscopic findings, and Helicobacter pylori infection in 75 children who visited Hanyang University Hospital Pediatrics. Results: The mean patient age was 12.2±3.3 years. The male-to-female ratio was 1:1.4. The mean D-cell number per high-power field in the antrum and body was 20.5 and 12 in children with substernal pain, 18.3 and 10.3 in vomiting, 22.3 and 6 in diarrhea, and 9.3 and 6 in abdominal pain, respectively (p>0.05). According to endoscopic findings, the mean D-cell number in the antrum and body was 14.3 and 6 with gastritis, 14 and 9.3 with reflux esophagitis, 16.7 and 8.7 with duodeno-gastric reflux, 19.3 and 12.7 with gastric ulcer, 16 and 13.7 with duodenitis, and 12.3 and 4 with duodenal ulcer, respectively (p>0.05). The D-cell number in the gastric body was 2.7 and 8.7 in children with current H. pylori infection and non-infected children, respectively (p=0.01), while those in the antrum were 15.5 and 14, respectively, with no statistical significance. Conclusion: The D-cell number was lower in the gastric body of children with current H. pylori infection. Further studies concerning peptide-secreting cells with a control group would provide information about the pathogenic pathways of UGI disorder.

• Natural Product Sciences
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• 제9권2호
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• pp.68-72
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• 2003

Quercetin and its sugar conjugates are the most abundantly distributed bioflavonoids and represent the largest proportion of flavonols in the plant kingdom. The present study was undertaken to demonstrate the effect of quercetin on the role of reactive oxygen species (ROS) in the development of gastric ulcers in rats. Administration of quercetin in doses of 50, 100 and $200\;mg\;kg^{-1}$ twice daily for 5 days, showed dose dependent significant protection against ethanol (EtOH), aspirin (ASP), cold-restraint stress (CRS) and pylorus ligation (PL) -induced gastric ulcer models and the results were comparable with those elicited by sucralfate. The thiobarbituric acid reactive substances in the stomach mucosa, an index of lipid peroxidation and regulation of plasma corticosterone were significantly increased in CRS-induced gastric ulceration. The queroetin $(100\;mg\;kg^{-1})$ and reduced glutathione effectively inhibited gastric lesions induced by CRS with a significant decrease in the lipid peroxidation and plasma corticosterone. These results indicate that quercetin a bioflavonoid exerts its antiulcer effect in light of free radical scavenging and plasma corticosterone in cold restraint stress ulcers.

• 셀메드
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• 제6권2호
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• pp.11.1-11.7
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• 2016

The aimed of the presence study was to determine the antiulcer potential of virgin coconut oil (VCO), either extracted by wet process (VCO_A) or fermentation process (VCO_B), and to compare their effectiveness against the copra oil (CO) using the HCl/ethanol-induced gastric ulcer model. Earlier, the oils underwent chemical analysis to determine the free fatty acids composition, physicochemical properties and anti-oxidant capability. In the antiulcer study, rats (n=6) were pre-treated orally for 7 consecutive days with distilled water (vehicle), 100 mg/kg ranitidine (positive group) or the respective oils (10, 50, and 100% concentration). One hour after the last test solutions administration on Day 7^th, the animals were subjected to the gastric ulcer assay. Macroscopic and microscopic analyses were performed on the collected rat's stomachs. From the results obtained, the chemical analysis revealed i) the presence of high content of lauric acid followed by myristic acid and palmitic acid in all oils and; ii) the significant (^*p< 0.05) different in anisidine- and peroxide-value, percentage of free fatty acid, total phenolic content and total antioxidant activity among the oils. The animal study demonstrated that all oil possess significant (^*p< 0.05) antiulcer activity with VCO_B being the most effective oil followed by VCO_A and CO. The macroscopic observations were supported by the microscopic findings. Interestingly, all oils were more effective than 100 mg/kg ranitidine (reference drug). In conclusion, coconut oils exert remarkable antiulcer activity depending on their methods of extraction, possibly via the modulation of its antioxidant and anti-inflammatory activity.

• 대한본초학회지
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• 제34권2호
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• pp.1-14
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• 2019

Objective : This study was designed to evaluate the protective effect of Rehmanniae Radix Crudus (RC) in 150 mM HCl/ethanol induced acute gastritis mice. Methods : ICR mice were divided into 5 groups (normal group, control group, 10 mg/kg sucralfate treated group, 50 mg/kg RC treated group, 100 mg/kg RC treated group, n=8). Normal group was not take any treatment. Control group induced gastritis 1 hour after ingestion of distilled water. 10 mg/kg sucralfate induced group was induced gastritis 1 hour after ingestion of distilled of sucralfate 10 mg/kg. 50 mg/kg and 100 mg/kg RC treated groups were induced gastritis 1 hour after ingestion of distilled of RC 50 mg/kg and 100 mg/kg. After 1 hour of gastritis induction, removed the stomach tissue. We examined histological observations, oxidative stress biomarkers, antioxidant proteins, inflammatory mediators and cytokines. Results : In this study, the RC treatment group showed gastritis and gastric ulcer inhibition, and the area of injury decreased. The oxidative stress biomarkers such as reactive oxygen species (ROS) and peroxy nitrite ($ONOO^-$) in the serum were reduced in the RC treated group. Inaddition, antioxidant proteins (nuclear factor erythroid 2-related factor 2, Heme oxygenase 1) were increased in RC treated group, and the expression of inflammatory mediators and cytokines induced by nuclear factor-kappa B activation was inhibited. Conclusion : According to the results, RC may have an excellent inhibitory effect on acute gastritis and gastric ulcer.

• 동의생리병리학회지
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• 제16권4호
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• pp.714-719
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• 2002

To examine effects of Whadamcheongwha-tang(WDCWT) extract, the mice investigated the gastrin and histamine secreting cells of the stomach by immunohistochemical method, and the lymphocytes of the spleen and thymus by flow cytometry after the oral administration of WDCWT extract(0.2ml/day) and omeprazole (1mg/day) for 7, 14 and 21 days. The result are as follows; 1. When WDCWT extract was administrated for 7 days, in result, gastrin secreting cells were unchanged. When omeprazole was administrated for 7 and 14 days, gastrin secreting cells were slightly increased than that of normal control group. When WDCWT extract was administrated for 21 days, in result, gastrin secreting cells were significantly increased 1.9 times than that of normal control group. When omeprazole was administrated for 21 days, gastrin secreting cells were increased 1.96 times than that of normal control group. 2. When WDCWT extract and omeprazole were administrated for 7 days, in result, histamine secreting cells were unchanged. When WDCWT extract was administrated for 21 days, in result, histamine secreting cells were significantly increased 1.9 times more than that of normal control group. When omeprazole was administrated for 21 days, in result, histamine secreting cells were increased 2.1 times compared with normal control group. 3. When WDCWT extract administrated for 7, 14 and 21 days, in result, splenic Band T lymphocytes, especially T/sub H/ lymphocytes were significantly increased compared with normal control group, and thymic T/sub H/ lymphocytes were also increased in WDCWT administrated group for 14 days. The results suggest that WDCWT extract inhibit a gastric acid secretion in mice stomach, and is useful in the treatment of the hyperacidity and gastric ulcer.

• Journal of Applied Biological Chemistry
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• 제53권4호
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• pp.239-247
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• 2010

Helicobacter pylori(H. pylori)는 위 감염증의 주된 원인균으로, 위염 및 위궤양을 일이키는 균으로 알려져 있다. 대부분의 성인 남녀의 위에서 발견이 되면, 특히 한국 성인의 위에서 60~90% 정도 발견된다. H. pylori을 제균하기 위해 많은 치료 방법들이 시도되었고 어느 정도의 제균 활성은 있었으나, 완벽한 제균은 기존의 치료 약물로는 어렵다. 따라서 기존의 약물보다 더 효과가 좋은 물질의 개발이 시급한 상황이다. 본 연구에서는 항균 능력이 뛰어난 물질 중, 쉽게 접할 수 있고 경구투여로 치료가 용이하여 약재나 식품으로 응용할 수 있는 물질들중 유기산들이 살균능력이 뛰어난 것을 알았다. 그 중 초산이 가장 뛰어나 살균효과를 보였다. 초산의 H. pylori에 대한 억제 능력을 확인하기 위해 농도별, 시간별로 in vitro 접촉실험법으로 실험을 시행하였다. 그 결과 0.3% 이상의 초산 용액에서는 H. pylori가 1분 이내에 100% 사멸되었다. In vitro 실험 결과를 토대로 BALB/c mouse를 이용한 in vivo 실험을 하였다. H. pylori를 경구투여로 위해 접종하였다. 다음 감염된 것을 확인하고 초산용액을 각 군에 해당하는 농도에 준하여 0.1mL를 1일 1회 혹은 3회 경구투여하였다. 초산에 의한 H. pylori의 사멸 정도를 재배양 실험법, urease test 및 ELISA법으로 확인한 결과 초산용액 0.2% 식이에서 모두 사멸되었다. RT-PCR법으로 검정한 결과는 초산용액 0.2%에서 밴드가 나타났지만 이는 사멸된 균의 것으로 보이며, 0.3%에서 존재하지 않는 것으로 나타났다. RT-PCR법에서 0.2% 초산용액 식이에서는 H. pylori가 확인되는 것은 H. pylori의 사균이 위벽에 붙어 있다가 RT-PCR법으로 확인되는 것으로 보였다. 따라서 이 연구 결과가 세상 사람들의 절반이상이 감염되어 있는 H. pylori를 퇴치하는 데 매우 유용한 자료가 될 것이다. 또한 초산을 이용한 기능성 식품 개발에도 중요한 자료로써 활용될 것으로 생각된다.

• Journal of Gastric Cancer
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• 제1권3호
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• pp.144-149
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• 2001

Purpose: Gastric stump cancer is defined as a cancer that develops in the stomach after a resection in cases of non-malignant or malignant gastric disease. The interval between the gastrectomy and the detection of gastric stump cancer must be over 5 years. Since duodenogastric reflux gastritis is a precancerous condition and one of the most important factors inducing gastric stump cancer, we compared the bile-acid content of gastric juice between gastric stump cancer patients and controls. Materials and Methods: To evaluate retrospectively the surgical treatment of patients with gastric stump cancer, we reviewed the cases histories of 1016 stomach cancer patients who had been operated on at the Department of General Surgery, Kosin University Gospel Hospital, between 1995 and 1998. The gastric juice was collected during the operations on the gastric stump cancer patients by using a needle puncture of the fundus of the stomach and during the endoscopic examinations of the control subjects. The samples were analyzed for various bile acids (gas chromatography/mass spectrometry). Results: The 6 gastric stump cancer cases accounted for $0.6\%$ of all gastric cancer patients; 5 patients were first operated on for a peptic ulcer and the remaining one for an adenocarcinoma of the stomach. All of the cases were men. The reconstruction method after the initial gastrectomy was a Billroth II in all cases. The sites of the gastric stump cancer were the anastomotic sitein 2 patients, the upper body in 2, the fundus in 1 and the cardia in 1. The operative methods were 3 total gastrectomies, 2 subtotal gastrectomies with Roux en Y anastomosis, and 1 partial gastrectomy with lymph node dissection and had a curative intention in all patients. All of the patients were still surviving at the time of this report. The gastric juices of 4 gastric stump patients showed significantly higher contents of cholic acid ($36.42{\mu}g/ml$) compared to the gastric juices of 35 control subjects ($36.42{\mu}g/ml$)(p$\leq0.0001$). Chenodeoxycholic acid and lithocholic acid were not significantly different. Conclusion: The gastric juice of gastric stump cancer patients contained a significantly higher cholic acid content. At the time of the initial gastrectomy, an operative method that prevents duodenogastric reflux may prevent or minimize the development of gastric stump cancer, and more aggressive surgical treatment may improve survival.