• Journal of Life Science
• /
• v.18 no.4
• /
• pp.494-502
• /
• 2008

The anaphylaxis shock reaction on the whole cells of H. pylori exhibited a symptom of slight illness for the first and second medication of causing antigen at an antigen concentration of WC (H) $60\;{\mu}g/100\;{\mu}l$ for WC (H) and no anaphylaxis shock symptom was observed at an antigen concentration of $20\;{\mu}g/100\;{\mu}l$ for WC (L). In the case of anaphylaxis shock reaction on the crude urease, no symptom was observed at an antigen concentration of $20\;{\mu}g/100\;{\mu}l$ for both urease (L) and urease (H). In the heterologous passive cutaneous anaphylaxis (PCA) test using a guinea pig-rat, no positive reaction was detected in all the medication groups of WC (H), WC (L), urease (H) and urease (L). In the skin sensitization test, it was observed that the best antigen concentration not causing skin disorder at each of $80\;{\mu}g/100\;{\mu}l$, $40\;{\mu}g/100\;{\mu}l$, $20\;{\mu}g/100\;{\mu}l$, and $20\;{\mu}g/100\;{\mu}l$ was $40\;{\mu}g/100\;{\mu}l$.

• Proceedings of the Korean Society of Applied Pharmacology
• /
• 1994.04a
• /
• pp.190-190
• /
• 1994

아급성독성시험 : DA-125를 1.0, 0.2, 0.04 mg/kg/day의 용량으로 4주간 정맥내투여시 고용량군에서만 세포분화가 빠른 골수, 비장, 흉선 등의 장기에서 독성이 나타났으며 중간 및 저용량군에서는 독성변화가 나타나지 않았다. 2)항원성시험 : DA-125는 단독 또는 면역보조제(CFA)와의 혼합감작에 의하여 능동전신성 또는 수신피부 아나필라시스를 일으키지 않았으며 면역확산법에 의해서도 항체가 확인되지 않았다. 면역독성시험에서 DA-125는 흉선, 비장의 위축과 임파구중식억제를 나타냈으나 그 정도는 DXR보다 경미하였다. 3)혈완장해시험 : 0.4%의 DA-125 용액은 토끼의 이개정맥내 정맥주사 및 저류시에 혈전형성이나 염증반응 등의 혈관장해를 나타내지 않았으나, 0.2%의 DXR용액은 약한 염증반응을 보였다.

• Journal of fish pathology
• /
• v.19 no.1
• /
• pp.45-54
• /
• 2006

The immunogenicity of Edwardsiella tarda was surveyed under two different culture conditions. In SDS-PAGE patterns of the outer membrane proteins (OMPs) extracts of E. tarda, grown under Trypic soy broth (TSB) and TSB supplemented iron chelate 2,2‘-dipyridyl iron-restricted condition, were examined. The results showed that the iron-regulated outer membrane protein (IROMPs) with molecular masses of 68 and 73 kDa were expressed by bacteria grown in iron-chelate TSB.The pathogenicity was examined by intraperitoneal injection with live E. tarda grown under TSB, iron-chelate TSB and iron-supplemented TSB. The result of pathogenicity test showed significantly high mortality in the group of live E. tarda grown under iron-chelate TSB.The effect of formalin killed cell (FKC) of TSB cultured bacteria and 2,2'-dipyridyl FKC (DP-FKC) of cultured bacteria on the iron-chelate TSB on the development of protective immunity in olive flounder was studied. The level of immune response was evaluated with immunized fish at 1, 2, 3 and 4 weeks after immunization. The numbers of specific antibody secreting cells (SASCs) showed significantly increased level at 2 week after immunization in each group. The agglutination titre of immunized fish was significantly high level at 3 weeks after immunization.The level of protection in olive flounder at 1, 2, 3 and 4 weeks after vaccination was examined by intraperitoneal challenge test with live E. tarda.

• The Korean Journal of Pesticide Science
• /
• v.15 no.3
• /
• pp.289-297
• /
• 2011

As part of safety evaluation of 2A (amono acid), PAT (phosphinotricin Acetyl-transferase), CtrI (Carotene desaturase) and PSY (phytoene synthase), the expressed proteins inserted to ${\beta}$-carotene Biofortified rice were tested for antigencity test. As a result, the group of administering high-concentration PAT, the expressed protein, showed a great content of total WBC; however, other expressed proteins did not show much difference. Against ASA (Active Systemic Anaphylaxis) test, the group of administering high-concentration PAT, the expressed protein, showed mild or medium degree of symptoms, but there was no dead entity. According to the result of the PCA (Passive Cutaneous Anaphylaxis test), the group of administering high-concentration PAT, 2A, PSY, and mixture of expressed proteins indicated positive response in low anti-serum concentration, and the group of administering the clinical concentration of mixture indicated mild positive response. However, because the group of administering the clinical concentration of expressed proteins, PAT, 2A, PSY, and CtrI, did not show positive response, it is thought that IgE is not generated. Further studies are needed to verify the safety of ${\beta}$-carotene Biofortified rice.

• The Journal of Korean Society of Virology
• /
• v.26 no.1
• /
• pp.23-30
• /
• 1996

대략 36,000 base pairs (bp)의 두 가닥짜리 DNA를 지놈으로 가진 사람 아데노바이러스 (Ad)는 DNA 상동성(相同性) 및 생물학적/생화학적 성격이 특이한 49개의 혈청형이 알려져 있는데, 이들 대부분의 Ad가 영유아군 및 면역능이 저하된 성인에서 치사적 결과를 초래할 수 있다. Ad의 세포향성(向性)(tropism)은 매우 다양하여 종류에 따라 상기도 감염, 각결막염, 영유아 장염등을 유발하는데 최근 Ad의 다양한 병원성에 대한 원인을 분자생물학적 수준에서 규명하려는 노력의 일환으로 지역에 따라 주되게 출현하는 Ad형 규명이 활발히 이루어지고 있다. Ad 동정/확인은 표면을 이루고 있는 group 공통항원인 hexon 단백질을 탐지하는 효소면역 측정법 (EIA)에 의하며, Ad형별은 Ad fiber의 세포독성 중화시험에의 한다. 그러나, 세포독성 중화시험이 엄청난 노동력 및 시간을 요구하면서도 민감도/특이도가 만족스럽지 못하여 이를 개선하기 위하여 검체 또는 세포배양에서 Ad DNA를 추출하여 제한효소 절단형태를 비교하는 방법이 개발되었는데 이는 세포배양에 잘 자라지 않는 바이러스주의 형별뿐만 아니라 지역 분리주들의 지놈 변형주를 관찰하는 분자생물학적/분자역학적 연구에도 도움이 되고 있다. 국내에는 Ad와 관련된 소아장염의 빈도가 rotavirus에 의한 것 다음으로 빈번한데도 Ad40/41외에 주되게 출현하는 장내 Ad형들이 전혀 규명된 바 없고, 한국형 Ad들의 지놈형태가 전혀 보고된 바가 없다. 또한 세계적으로 Ad형별 조사지역이 늘어감에 따라 유아장염과 연관된 Ad 역시 Ad40, 41이 외의 형들이 Ad40, 41을 능가하는 것으로 보고되고 있는 지역도 있으나 국내에서는 Ad40, 41이외의 형들은 그 역학적 중요도가 전혀 알려져 있지 않다. 이로서 본 연구의 목적은 Ad주들에 특이 중화항체를 이용한 세포독성 중화시험과 Ad DNA 절단법을 적용하여 한국형 장내 Ad주들의 형별을 처음으로 시도함과 동시에 1989-1991사이 출현한 Ad들의 유전적 변형을 관찰하려는 것이었다. 두 방법 모두 사용하였을 때 주되게 출현하는 장내 Ad형들은 Ad4l, Ad2, Ad7, Ad5, 및 Ad40이었다. Ad40/41-양성 검체를 제외한 Ad hexon-EIA양성들의 77.5%를 형별 할 수 있었던 Ad DNA의 제한효소 절단방법은 형들간의 교차중화로 특이성이 낮았던 중화방법 (47.5%)보다 매우 효율적이어서 두 가지 방법을 함께 적응하였을 때는 40주중의 81.5%인 35주를 형별 할 수 있었다. 또한Ad DNA 제한 효소 절단방법은 Ad7 변이주 (Ad7b)도 탐지 할 수 있었다.

• Korean Journal of Food Science and Technology
• /
• v.41 no.5
• /
• pp.560-565
• /
• 2009

In this study, Korean mistletoe extract (KM-110) was fermented with two strains of Lactobacillus (FKM-110) and then toxicity, lectin content, and immune activities were investigated. The lectin content of FKM-110 was about 53-71% lower than that of KM-110. When mice were subcutaneously administered with KM-110 and FKM-110, the $LD_{50}$ obtained for KM-110 treatment was 50-100 mg/kg as compared to 150-200 mg/mL for FKM-110. Each preparation stimulated macrophages directly and enhanced productivity of inflammatory cytokines such as TNF-${\alpha}$ and IL-$1{\beta}$. FKM-110 treatment resulted in lower cytokine production compared to KM-110. When mice were immunized with Keyhol limpet hemocyanin (KLH) antigen along with KM-110 or FKM-110 administration, higher antibody titers to KLH were observed in the KM-110 or FKM-110 groups compared to mice immunized with KLH alone, thereby showing no difference between KM-110 and FKM-110. Therefore, fermentation of Korean mistletoe extract with these Lactobacillus strains decreased toxicity in vivo while the enhancement of immune activity by KM-110 and FKM-110 was similar. These data suggest that KM-110 fermentation tended to decrease lectin content and in vivo toxicity. In addition, other components in the fermented mistletoe extract appear to stimulate immuno-adjuvant activity instead of lectin.

• Journal of Chest Surgery
• /
• v.43 no.6
• /
• pp.576-587
• /
• 2010

Background: Effective decellularization and fixation process is critical, in order to use xenogenic valves clinically. In the present study, we decellularized bovine pericardium using sodium dodecyl sulfate (SDS) and N-lauroyl sarcosinate, treated with $\alpha$-galactosidase, and then fixed in various manners, to find out the most effective tissue preservation & fixation procedure. Material and Method: Bovine pericardium was decellularized with SDS and N-lauroyl sarcosinate, and treated with $\alpha$-galactosidase. Both groups were fixed differently, by varying glutaraldehyde (GA) or EDC (1-ethyl-3-(3-dimethyl aminopropyl)-carbodiimide)/N-hydroxysuccinamide (NHS) treatment conditions. Thereafter, physical examination, tensile strength test, thermal stability test, cytotoxicity test, pronase test, pronase-ninhydrin test, purpald test, permeability test, compliance test, H&E staining, DNA quantification, and $\alpha$-galactose staining were carried out to each groups. Result: GA fixed groups showed better physical properties and thermal stability than EDC/NHS fixed groups, EDC/NHS-GA dual fixed groups showed better physical properties and thermal stability than EDC/NHS fixed groups, and showed better thermal stability than GA fixed groups. In pronase test and pronase-ninhydrin test, GA fixed groups and EDC/NHS-GA dual fixed groups showed stronger crosslinks than EDC/NHS groups. Permeability and compliance tended to increase in EDC/NHS-GA dual fixed groups, compared to GA fixed groups. But, EDC/NHS-GA dual fixed groups had stronger tensile strength and lower cytotoxicity than GA fixed groups. Conclusion: We have verified that EDC/NHS-GA dual fixation can make effective crosslinks and lower the toxicity of GA fixation. Henceforth, we will verify if EDC/NHS-GA dual fixation can lower calcifications & tissue failure in vivo experiment.