• 제목/요약/키워드: allergy reaction

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Fuzzy Set을 이용한 피부반응 검사의 자동화 연구 (Automation of Skin Allergy Test using Fuzzy Set)

  • 심철;정병선;이명구;박민용
    • 대한의용생체공학회:학술대회논문집
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    • 대한의용생체공학회 1990년도 춘계학술대회
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    • pp.43-46
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    • 1990
  • Modern society is prevailed a lot of allergies. So, the allergy test is very important. There are many kinds of allergy test. A doctor usually uses skin allergy test among many allergy tests. However, little standadization and objectivity of grading-standard has been established in the skin allergy test. A measurement of the reaction area has been a major objective to perform skin allergy test. Recently, a doctor's method is to measure the reaction area after drawing a line that represents the reaction area on the skin. But this method differs slightly from the real reaction area and individual doctor's measurement is different, because the edge of the reaction area is obscure. In this paper, we propose a algorithm which is able to detect vague edges using the fuzzy set. The algorithm that detects the line and curve is proposed first. Here, the maximum value is calculated by comparing the membership function of the line and curve seperately. We also encode the direction of the line and curve by using 8-direction code. Then, we calculate the reaction area by measuring the pixels which are inside the reaction area. And finally the Allergy grade is decided by grading-standard, and we accomplish faster, the 80re accurate and objective allergy grade decision.

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Management of patients with allergy to local anesthetics: two case reports

  • Arya, Varun;Arora, Geetanjali;Kumar, Sanjeev;Kaur, Amrita;Mishra, Santosh
    • Journal of Dental Anesthesia and Pain Medicine
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    • 제21권6호
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    • pp.583-587
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    • 2021
  • Lidocaine is the most commonly used local anesthetic (LA) agent in various dental as well as oral and maxillofacial procedures. Although rare, adverse effects and allergic reactions to lidocaine have been reported. In patients with suspected allergy to LA or a history of such reaction, careful history-taking and allergy testing should be performed to choose an alternative LA agent to avoid any adverse effects. Here, we present two cases of delayed hypersensitivity reaction to lidocaine, wherein the patients presented with erythema, edema, and itching. Intradermal testing confirmed allergic reaction to lidocaine, and the patients underwent successful dental treatment using an alternative LA agent. This report highlights the importance of allergy testing prior to LA use considering the serious consequences of allergy to these agents and describes the management of such patients using an alternative LA agent.

하남시 영유아 보육시설의 식품알레르기 현황 조사 - 100인 미만의 어린이 급식소를 중심으로 - (The Current State of Food Allergy of Preschool Childcare Facilities in Hanam)

  • 조우균;김진아
    • 대한지역사회영양학회지
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    • 제20권4호
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    • pp.251-258
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    • 2015
  • Objectives: The purpose of this study was to investigate how to manage food allergy of pre-school children, focusing on the current status of the food allergy in childcare facilities in Hanam which have less than 100 children. Methods: Targeting 159 preschool childcare facilities, survey was carried out for a month in March, 2015. Recovery rate was 66.7%. 106 surveys out of 159 were available for analysis using SPSS statistical program version 19.0. Results: Among 106 facilities, 58 (54.7%) reported that none of their children had a food allergy and 48 (45.3%) reported one more children had a food allergy. Total number of children having a food allergy was 71. Among them, the occurrences of food allergy in males were significantly more than that of the females (p<0.001). Further, children under 2 years of age had significantly more food allergy than the other ages (p < 0.001). The allergic inducing foods were nuts (23.3%), egg (17.8%), milk and dairy products (16.4%), fish and shellfish (13.7%), instant foods (12.3%), fruits (8.2%), soybean (4.1%), meat (2.7%), and cereals (1.4%) in order, and 6 children out of 71 were allergic to more than 2 food items. The clinical symptoms of the food allergy were a skin reaction (87.9%) and an oropharyngeal & respiratory reaction (12.1%). Majority of childcare facilities (80.3%) didn't serve alternative foods for children with food allergy. Necessity for food allergy education was significantly higher in facilities with food allergy issues than without such issues. Conclusions: The Center for Children's Foodservice Management need to educate workers of childcare facilities and parents about managing food allergy and enforce a plan to provide alternative menu to children with food allergies.

식품알레르기 연구를 위한 동물모델의 개발 (Studies on Animal Models of Food Allergy)

  • 주향란
    • 한국식품영양과학회지
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    • 제27권3호
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    • pp.553-562
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    • 1998
  • Food allergy is defined as an immunologically-mediated adverse reaction to food.The food allergy as a clinical entity has been recognized for many years, although there is yet no general consensus as to the incidence of this syndrome. One difficulty in studying food allergies has been the lock of a reasonable animal model in which reactions could be induced by orally administrating foods. It has been generally accepted that the initial target for an immediate reaction to food is the mast cells, within the gastronitestinal mucosa, and such cells are sensitize in vivo by food-specific immunoglobulin(Ig) E. Degranulation of these cells facilitates the entry of an antigenic epitope into the lymphatic system and blood stream, thereby causing further degranulation of the mast cells and basophils throughout the boy. Accordingly, the author attempted to develop an animal model that is indicative of evaluating IgE-mediated immediate hypersensitivity. It is also necessary to evaluate the effects of nutritional envioronments on dietary protein-dependent allergy and the regulatory mechanisms of dietary fats on IgE-mediated immune response. In this review, animal models to evaluate a food ingredient, effects of dietary fats and curcuminoids, milk whey protein hydrolysates on allergic reaction, and effect of dietary fat in splenic immune cells are presented.

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알레르기 질환 유무에 따른 생활습관 차이 -식이, 운동, 흡연, 음주습관을 중심으로- (The Comparision of Lifestyle Patterns between Allergy and Non-Allergy People - Food intake, Exercise, Smoking, Alcohol intake-)

  • 김용순;박지원;송영신;김기연;김철우;박중원;홍천수
    • 지역사회간호학회지
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    • 제12권1호
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    • pp.269-277
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    • 2001
  • Purpose. The purpose of this study was to compare the total lifestyle patterns. of allergy and non-allergy group. Method. The study was carried out to access the lifestyle patterns such as food intake, smoking, alcohol intake and exercise habits by questionnairing the no allergy people and 205 non-allergy people living in Seoul area. Results. 1. The proportion of eating stimulatory food materials-mainly hot and salty-of allergy group were significantly higher than those of non-allergy group. 2. In allergy group, the proportion of meat intake was significantly higher than that of non-allergy. 3. In allergy group, exercise habit was higher than that of non-allergy, but not significant. 4. In allergy group, smoking was lower than that of non-allergy, but not significant. 5. In allergy group, alcohol intake was lower than that of non-allergy, but not significant. Conclusion. Lifestyle patterens such as food intake(salt and meat) were significantly different by prevalence of allergy and allergy type, which suggested that lifestyle patterns of allergy people need to be studied to develop preventive stratagies for allergic reaction.

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알레르기 후기 반응 염증 억제 효과에 관한 태음조위탕(太陰調胃湯)의 실험적 연구 (An Experimental Study on the Anti-inflammatory Effect of Taeeumjowui-tang (Taiyintiaowei-tang) in Allergic Late Inflammation)

  • 염유림;정희재;김진주;정승기
    • 대한한방내과학회지
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    • 제31권4호
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    • pp.846-856
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    • 2010
  • Objective : Allergic disease, a very common chronic illness that affects all ages of patients, has been well characterized as an IgE-dependent immunologic response. Recently, interest has grown about the late inflammatory reaction as well as the early one characterized by IgE and mast cells in allergic disease. The purpose of this study was to find the anti-inflammatory effect of Taeeumjowui-tang (Taiyintiaowei-tang) in allergic reaction. Methods : The experiment was performed using Raw 264.7 cells pretreated with Taeeumjowui-tang contents extracts. The results were measured for different concentrations of Taeeumjowui-tang extracts (100, 200, $300{\mu}g$/ml): the toxicity and proliferation of cells by MTT analysis, LPS-induced NO production using Griess reagent and IL-6/ TNF-${\alpha}$ production, which is a significant criteria for diagnosing allergic reaction. Results : No toxicity of Taeeumjowui-tang (100, 200, $300{\mu}g$/ml) on Raw 264.7 cells was found after 24 hours incubation. LPS-induced NO production was reduced after treatment with Taeeumjowui-tang (100, 200, $300{\mu}g$/ml)(P<0.001). IL-6 decreased only at $100{\mu}g$/ml(P<0.05). TNF-${\alpha}$ production decreased only at $300{\mu}g$/ml, but still statistically insignificant. There was no relationship between any components of Taeeumjowui-tang alone and inhibition of NO production. Conclusions : These data suggest that Taeeumjowui-tang has anti-inflammatory effects in allergic reaction.

식품알레르기 (Food allergy)

  • 이재천;김철우
    • Journal of Medicine and Life Science
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    • 제19권3호
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    • pp.90-94
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    • 2022
  • Food allergy is one of the adverse food reactions, which is developed by immunological reactions. Food allergy is increasing in prevalence among children and adults. In the diagnosis, food challenge is confirmative with history and laboratory tests. Avoidance of culprit food is the only preventive method, especially in patients with severe symptoms. In some food allergies, cross-reactivity among allergens should be considered. Latex-fruit/vegetable syndrome and pollen food allergy syndrome are well-understood phenotypes of food allergy related to cross reaction. Red meat allergy is recently described as one of tick-borne diseases. In a rare phenotype of food-dependent exercise-induced anaphylaxis, factors affecting the absorption of food allergen are important in its pathophysiology.

In Vitro에서 히스타민 측정 시 ELISA법과 HPLC-MS 분석법의 비교 (Comparison of Methods for Measuring Histamine by ELISA and HPLC-MS Assay In Vitro)

  • 이인희;김유현
    • 대한임상검사과학회지
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    • 제47권4호
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    • pp.306-312
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    • 2015
  • 알러지 반응이 일어나면 histamine이 방출되기 때문에 histamine을 정량 측정함으로써 유발된 알러지의 정도를 확인 할 수 있다. 일반적으로는 항원-항체반응으로 microplate reader를 이용하여 흡광도를 측정하여 정량 한다. 본 연구에서는 histamine 방출량을 측정함에 있어서 일반적인 항원-항체반응과 분석 화학적인 방법으로 HPLC-MS를 이용한 방법을 비교하였다. 세포주는 RBL-2H3를 사용하였고, C48/80으로 자극시켜 알러지를 유발하였다. 유발된 알러지는 ${\beta}$-hexosaminidase의 측정으로 탈 과립을 확인하였으며 실험의 정당성을 위하여 세포독성 능을 확인하였다. Histamine 정량에서 항원-항체반응에 의한 측정의 정량한계는 10.257 ppm이었고, HPLC-MS에 의한 정량한계는 0.020 ppm으로 현저한 차이를 보였다. 알러지 활성 및 항 알러지 실험에 있어서 histamine의 측정은 HPLC-MS를 이용한 분석이 더 정밀하고 정확한 실험인 것을 확인하였다.

Inhibition of Eosinophil Infiltration and Humoral Immune Reaction by Ketotifen in BALB/c Mice Infected with Echinostoma hortense

  • Lim Byung-Hyuk;Im Jee-Aee;Jo Yoon-Kyung;Kim In-Sik;Lee Kyu-Jae;Yang Eun-Ju;Lim Su-Joung;Ryang Yong-Suk
    • 대한의생명과학회지
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    • 제10권4호
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    • pp.353-360
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    • 2004
  • Eosinophils play an essential role in allergy reaction after parasite infection. To examine the immune reaction induced by eosinophils, we investigated the allergy reaction in BALB/c mice infected with Echinostoma hortense's metacercariae, as well as the effect of ketotifen, an anti-allergy drug, on eosinophil immune reaction in the villi of host intestine. The worm recovery rate was higher in ketotifen-treated mice than in untreated mice and the worms in ketotifen-treated mice survived longer than those in untreated mice. The antibody titer in the serum of ketotifen-treated mice was very low. Especially, Echinostoma hortense infection strongly increased serum IgE level and eosinophil infiltration into the villi of the mouse intestine. Ketotifen treatment suppressed eosinophil infiltration into the infected areas and inhibited IL-4 production. The reduced IL-4 production may be related with the reduction of IgE, IgG1 and IgG2 production. In conclusion, ketotifen inhibited eosinophil infiltration functioning in the allergy reaction induced by parasite infection and the expression of immunoglobulins and cytokines.

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