• Title/Summary/Keyword: cELISA

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A detection method for vibrio vulnificus using monoclonal antibodies

  • Chung, Mi-Sun;Rim, Bung-Moo;Boong, Uhm-Tae;Park, Moon-Kook
    • Journal of Microbiology
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    • v.35 no.2
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    • pp.87-91
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    • 1997
  • Monoclonal antibodies were prepared in order to an assay method for Vibrio vulnificus. Sixteen mouse ybridoma cell lines were established by immunization of whole cell antigen to BALB/c mice, fusion with SP2/O myeloma cells, and cloning. Most of them secreted IgM.lambda. antibodies. A sandwich enzyme-linked immunosorbent assay was developed with rabbit anti-V. vulnificus polyclonal antibodies as capture antibody, an IgM monoclonal antibody as detector antibody, and goat anti-mouse IgM-alkaline phosphatase conjugate as developer antibody. The range of detection was 10$\^$4/ to 10 V. vulnificus cells per microplate well. When four related Vibrio species were tested for cross-reactions, V. parahaemolyticus showed 3.5% reactively and V. carchariae, V. fluvialis, and V. furnisii showed negligibal (<1%) cross-reactivity.

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Experimental study about the effect of several herbs on collagen synthesis (수종(數種) 한약재의 콜라겐 생합성 효과에 대한 실험적 연구)

  • Yoon, Ji-Eun;Kim, Nam-Kwen;Hwang, Chung-Yeon;Jo, Eun-Hee;Park, Min-Cheol
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.23 no.3
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    • pp.33-41
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    • 2010
  • Background & Objective : This study was performed to find a new anti-aging, anti-wrinkle agent. Ten kinds of hers were evaluated by proliferation, cytotoxicity, collagen synthesis tests in cultured human dermal fibroblast. Methods : MTT assay was carried out to check cell proliferation, cytotoxic effect of each herbal medicine. Collagen synthesis was investigated by the amount of propeptide using procollagen type-Ⅰ C peptide(PIP) ELISA kit(Takara). Results and Conclusions : There are no cytotoxicity in all group herbs by MTT assay. Collagen synthetic ability was greatest in LYCII FRUCTUS(LF) and was excellent in order of Rehmanniae Radix Preparat(RRP) > Nelumbinis Semen(NS) > Asparai Radix(AR) > Schizandrae Frucus(SF).

Prevalence of antibodies to Coxiella burnetii in cattle in Sejong (세종지역 사육 소의 큐열 항체 보유율 조사)

  • Lee, Tae-Ho;Rhee, Seong-Hee;Yoon, Chang-Hee
    • Korean Journal of Veterinary Service
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    • v.42 no.4
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    • pp.177-181
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    • 2019
  • Q fever is a zoonosis caused by Coxiella burnetti that is important not only for livestock but also for humans. This research aims to investigate infection rate of Q fever by examining the prevalence of antibody titers in cattle in Sejong City. From March to October 2018, 505 samples of Hanwoo serum and 47 samples of bulk-tank milk were collected and analyzed using ELISA. According to the result, 25 (53.2%) out of 47 bulk-tank milk samples were antibody positive and 28 (5.5%) out of 505 cows were antibody positive. The seroprevalence of C. burnetii increased with age (<1 y=0%, 1~2 y=4.1%, 3~5 y=7.5%, ≥6 y=9.6%) and was higher in females (6.5%) compared to males (0%).

A Study on the Mating Types and Serotypes of Clinical Isolates of Cryptococcus neoformans and Production of Serodiagnostic Antigen and Antiserum for Cryptococcosis (우리나라 환자로부터 분리된 Cryptococcus neoformans의 균학적 특성과 혈청학적 진단용 항원 및 항체생산에 관한 연구)

  • Kim, Sang-Jae;Kim, Sin-Ok;Lee, Seung-Ho;Chong, Yon-Sop;Suk, Jong-Sung
    • The Journal of the Korean Society for Microbiology
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    • v.21 no.1
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    • pp.127-131
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    • 1986
  • The mating types and serotypes of 10 clinical isolates of Cryptococcus neoformans have been investigated. Seven isolates were serotype A and three were serotype D and thus they fell in C. neoformans var. neoformans. Mating types of six isolates were found $\alpha$ and two were $\alpha$ but another two isolates were untypable. Enzyme linked immuno-sorbent assay(ELISA) using rabbit hyper-immune serum to cryptococcal polysaccharides was well adapted to the analysis of capsular polysaccharides in sera of the patients with cryptococcal meningitis.

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Effect of Scutellariae Radix Extract on Serum Cytokines in OVA-induced Asthmatic Mice (황금이 천식모릴 생쥐의 혈청 사이토카인에 미치는 영향)

  • Na, Do-Gyun;Park, Yang-Chun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.4
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    • pp.973-976
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    • 2005
  • The purpose of this research is to examine the effects of Scutellariae Radix(SR) extract on cytokines in ovalbumin (OVA)-induced asthmatic mice. In vivo, C57BL/6 mice were sensitized and handicapped by OVA for 12 weeks. During this experiment, the one group was then treated with SR extract for the later 8 weeks (3 times per week) and analyzed by ELISA. There were significant decreases in IL-4(p<0.05), IL-5(p<0.05), IL-13(p<0.01), histamine(p<0.05) in serum of SR group. IgE also decreased, but was not significant compared with that of control group. The results of this study support a role for SR as an effective treatment for asthma in its experimental success in significantly decreasing inflammation and asthma reactions.

Identification of Chicken Pork and Beef Meats by Chicken Specific Antibody (계육 특이항체를 이용한 원료육 단백질의 검색)

  • 임태진
    • Food Science of Animal Resources
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    • v.18 no.2
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    • pp.149-156
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    • 1998
  • Chicken beef pork meats and isolated soy protein (ISP) were heated at 10$0^{\circ}C$ for 30min and then heat-resistant proteins were fractionated to examine cross-resistant protein from chicken meat but not with beef pork or ISP. Dot blotting using the polyclonal antibody showed that the sen-sitivity for detecting chicken meat was 1$\mu$m and antibody-antigen reaction was dose-dependant. Results of dot blotting analysis to compare the amount of chicken meat present in arket meat products(Kentucky Frank sausage;chicken meat 46.52% and pork 24.92% vs Bulgogi Ham;chicken meat 28.89% and turkey 31.44%)showed that the significant differences between two meat products in terms of chicken meat concentrations. Dose-dependant dot-blotting reaction was also observed in chicken meat samples with various dilution.

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Transient and stable expression of hepatitis B surface antigen in tomato (Lycopersicon esculentum L.)

  • Srinivas, L.;Sunil Kumar, G.B.;Ganapathi, T.R.;Revathi, C.J.;Bapat, V.A.
    • Plant Biotechnology Reports
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    • v.2 no.1
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    • pp.1-6
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    • 2008
  • Cotyledonary leaves of tomato cv. Megha were transformed with the hepatitis B virus 's' gene, which encodes surface antigen. Six plant expression cassettes (pHBS, pHER, pEFEHBS, pEFEHER, pSHER and pEFESHER) were used to assay the possible expression levels by agroinfiltration. The maximum transient expression level of 489.5 ng/g D.W. was noted in pEFEHER-infiltrated cotyledonary leaves. Transgenic tomato plants with pEFEHBS and pEFEHER expression cassettes were regenerated and characterized by molecular analysis. The expression of the antigen in the fruits was confirmed by RT-PCR and ELISA analysis. This is the first report on the expression of hepatitis B surface antigen in tomato.

Cyclooxygenase Inhibitory Activity of Ginsenosides from Panax ginseng

  • Yoo, Hye-Hyun;Kang, Ki-Sung;Lee, Yang-Beom;Kim, Bak-Kwang;Park, Man-Ki;Park, Jeong-Hill
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.216.1-216.1
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    • 2003
  • P. ginseng C.A. Meyer is one of the most widely used herbal medicine in Asia. It has been used for the treatment of many disorders. Its major constituent is known to be ginsenosides, and there are many documents about bioactivities of ginsenosides such as anti-oxidant, anti-tumorigenic, anti-fatigue, and anti-inflammatory activities. Some of these activities are supposed to have some correlation with inhibitory action of cyclooxygenase (COX). Ginsenosides from P. ginseng and sapogenins were evaluated for their inhibitory effects against both cyclooxygenase-1 and -2 (COX-1 and -2). Inhibitory activity was evaluated by measuring prostaglandin E$_2$ (PGE$_2$) production from arachidonic acid with an ELISA reader. (omitted)

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Sparganosis Presenting as Cauda Equina Syndrome with Molecular Identification of the Parasite in Tissue Sections

  • Boonyasiri, Adhiratha;Cheunsuchon, Pornsuk;Srirabheebhat, Prajak;Yamasaki, Hiroshi;Maleewong, Wanchai;Intapan, Pewpan M.
    • Parasites, Hosts and Diseases
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    • v.51 no.6
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    • pp.739-742
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    • 2013
  • A 52-year-old woman presented with lower back pain, progressive symmetrical paraparesis with sensory impairment, and sphincter disturbance. Magnetic resonance imaging (MRI) of the whole spine revealed multiple intradural extramedullary serpiginous-mass lesions in the subarachnoid space continuously from the prepontine to the anterior part of the medulla oblongata levels, C7, T2-T8, and T12 vertebral levels distally until the end of the theca sac and filling-in the right S1 neural foramen. Sparganosis was diagnosed by demonstration of the sparganum in histopathological sections of surgically resected tissues and also by the presence of serum IgG antibodies by ELISA. DNA was extracted from unstained tissue sections, and a partial fragment of mitochondrial cytochrome c oxidase subunit 1 (cox1) gene was amplified using a primer set specific for Spirometra spp. cox1. After sequencing of the PCR-amplicon and alignment of the nucleotide sequence data, the causative agent was identified as the larva of Spirometra erinaceieuropaei.