• Applied Biological Chemistry
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• 제43권1호
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• pp.57-62
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• 2000

Phellinus igniarius의 배양방법별 균사체 및 단백다당류 생산수율비교 실험에서는 균사체내 다당류의 경우 모두 진탕배양이 효과적이었으나 균사체외 다당류의 경우 다당류 생산에서는 정치배양이 효과적이었다. 다당류의 정제는 조단백다당류를 이용하여 DEAE-cellulose column에 의한 1차 정제를 행하였고, 최종으로 Sepharose 2B를 이용한 2차 정제를 실시하여 최종적으로 균사체내 단백다당류의 탈이온수 분획물(PIIPDG)과 알칼리분획물(PIIPAG), 균사체외 단백다당류의 탈이온수 분획물(PIEPDG) 알칼리 분획물(PIEPAG)을 얻었다. 이때의 정제 수율은 1차 정제에서 40%의 회수율을 나타내었으며 2차 정제에서는 $38{\sim}61%$의 높은 회수율을 보였다. PIEPDG는 총당 79.0%, 총단백질 7.2%, PIEPAG는 총당 56.7%, 총단백질 40.8%, PIIPDG는 총당 64.8%, 총단백질 17.4%, PIIPAG는 총당 56.9%, 총단백질 41.5%으로 측정되었다. 각 단백다당류의 분자량은 PIEPDG 166KDa에서 PIEPAG 565KDa까지 모두 10만이 넘는 거대분자로 나타났다. 각 분획물의 단당류 조성을 볼때, PIEPDG는 glucose, PIIPDG와 PIIPAG는 glucose, inositol, PIEPAG는 glucose, rfructose, inositol이 검출되었다.

• 대한미생물학회지
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• 제34권5호
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• pp.435-443
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• 1999

Orientia tsutsugamushi is obligate intracellular bacterium that grows within the cytoplasm of the eukaryotic host cells. Therefore capability of the attachment, entry into the host cell and intracellular survival should be critical process for oriential infection. In this study we investigated the cellular invasion mechanism of Orientia tsutsugamushi and the role of transmembrane heparan sulfate proteoglycan, which binds diverse components at the cellular microenvironment and is implicated as host cell receptors for a variety of microbial pathogens. First of all Orientia tsutsugamushi can invade a wide range of nonprofessional phagocytic cells including fibroblast, epithelial cells and endothelial cells of various host species, including Band T lymphocytes. Thus, it was postulated that the attachment of O. tsutsugamushi requires the recognition of ubiquitous surface structures of many kinds of host cells. Treatments with heparan sulfate and heparin inhibited the infection of Orientia tsutsugamushi in dose-dependent manner for L cell, mouse fibroblast, whereas other glycosaminoglycans such as chondroitin sulfate had no effect. Collectively, these findings provide strong evidence that initial interaction with heparan sulfate proteoglycan is required for the oriential invasion into host cells.

• 동의생리병리학회지
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• 제21권5호
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• pp.1285-1290
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• 2007

The present study aims to identify and characterize genes that cause differen genes between non-responders and responders to electroacupuncture (EA) on mechanical allodynia following peripheral nerve injury. Under sodium pentobarbital anesthesia, animals were subjected to unilateral transection of the superior caudal trunk at the level between S1 and S2 spinal nerves. EA stimulation (2Hz, 0.3 ms, 0.2-0.3 mA) was delivered to Zusanli (ST36) for 30 min 2 weeks after the surgery. The degree of mechanical allodynia was assessed quantitatively by touching the tail with von Frey hair (2.0 g) at 10 min intervals. The rats, which showed an EA-induced decrease of response frequencies under 10 %, were classified as non-responders and those displaying an EA-induced decrease of response frequencies 20 % or more were classified as responders. Results from oligonucleotide microarray, to which cDNAs from the spinal dorsal horn (DH) were applied, showed that hemoglobin beta chain complex and chondroitin sulfate proteoglycan-5 decreased and limbic system-associated membrane protein increased in the non-responder group, whereas calcium-independent alpha-Iatrotoxin receptor homolog-3 increased in the responder group. These results suggest that The functional abnormality of molecules regulating cell adhesion, intracellular signal transduction and cell differentiation in the spinal DH may be involved in the anti-allodynic effect of EA.