• 한방안이비인후피부과학회지
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• 제20권1호통권32호
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• pp.195-200
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• 2007

Objective : This experimental study was performed to investigate the effect of Jinpi-san on Staphylococcus aureus(S. aureus) and Staphylococcus epidermidis(S. epidermidis) that induce keratitis. Methods : Minimal inhibitory concentration(MIC) was measured by dropping to $50{\mu}l$ according to density Jinpi-san(100%, 10%, 1%, 0.1 %). Anti-bacterial potency was measured by the size of inhibition zone with change of volume. Results : 1. MIC on S. aureus in Jinpi-san was $40{\mu}l$ undiluted solution. 2. MIC on S. epidermidis in Jinpi-san was $20{\mu}l$ undiluted solution. Conclusions : These results indicate that Jinpi-san can be used to cure S. aureus, S. epidermidis that induce eye disease(keratitis). If further study is performed, the use of eye drops will be valuable and beneficial in the clinical medicines.

• 치위생과학회지
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• 제17권6호
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• pp.472-480
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• 2017

치과의료기관 의료장비 표면 및 치과위생사 손의 S. epidermidis 오염도 조사를 위해 2017년 7월부터 8월까지 일부지역 20개 치과의원에서 치과위생사 20인의 손 오염, 치과별 7부위 표면 140부위의 S. epidermidis 오염도를 조사하였다. S. epidermidis 오염도는 핸드플레이트와 로닥플레이트를 사용하였으며, $35^{\circ}C$ 24시간 배양하였다. 손 오염도는 핸드플레이트 기준에 근거하여 저, 중, 고 그룹으로 분류한 후 그룹별 손 부위별 오염도를 ANOVA 분석하였다. 의료장비 표면 오염수준은 집락을 계수하여 기술통계 하였다. 치과위생사 55%는 중등도 이상의 손 오염이 있었고, 부위별로는 손바닥이 29.45 CFU로 가장 높게 나타났으며, 그 다음으로는 중지 7.8 CFU, 약지 6.4 CFU, 엄지 6 CFU 순서였다. 의료장비 표면 오염도 조사결과 3-way 손잡이 4.45 CFU, 컴퓨터 마우스 3.37 CFU, 거울 손잡이 1.60 CFU로 다른 영역보다 높게 조사되었다. 손 오염도가 높은 집단일수록 손의 S. epidermidis 오염도가 높은 양적 상관관계를 나타내었다. S. epidermidis 오염도는 의료장비 표면 오염보다 손에서 높게 나타났다. 그러므로 의료진들은 손 위생의 중요성을 인식하고 WHO에서 제시한 방법으로 손 위생을 실천하는 것이 요구되었다. 의료진들이 감염관리 업무수행에 책임감을 갖고 안전한 의료 환경을 조성할 수 있도록 감염관리 지침과 체계적인 감염관리 업무 수행에 관한 교육이 요구되었다.

• 대한약침학회지
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• 제10권3호
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• pp.71-76
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• 2007

Objectives This experimental study was performed to investigate the continuous anti-bacterial potency of Coptidis rhizoma extract on cultivation of Staphylococcus species(S. aureus, S. epidermidis) that induce eye disease. Methods Minimal inhibitory concentration(MIC) was measured by dropping to $50{\mu}l$ diluted Coptidis rhizoma extract(100%, 10%, 1%, 0.1%) on S. aureus, S. epidermidis that were cultivated from 2 to 6 days. Anti-bacterial potency was measured by the size of inhibition zone with change of volume($20{\mu}l,\;30{\mu}l,\;40{\mu}l,\;50{\mu}l$). Results 1. Anti-bacterial potency of Coptidis rhizoma extract on S. aureus was appeared in 100%, 10% and was the same as anti-bacterial potency of 2 days and 6 days. Anti-bacterial potency with change of volume(100%) was increased in propotion to increase volume on all samples. Anti-bacterial potency with change of volume(10%) was increased in propotion to increase volume on all samples except $20{\mu}l$. Anti-bacterial potency of Coptidis rhizoma extract on S. aureus was appeared continuous. 2. Anti-bacterial potency of Coptidis rhizoma extract on S. epidermidis was appeared in 100%, 10% and was the same as anti-bacterial potency of 2 days and 6 days. Anti-bacterial potency with change of volume(100%) was increased in propotion to increase volume on all samples. Anti-bacterial potency with change of volume(10%) was appeared in $50{\mu}l$. Anti-bacterial potency of Coptidis rhizoma extract on S. epidermidis was appeared continuous. Conclusions Anti-bacterial potency of Coptidis rhizoma extract on cultivation of S. aureus & S. epidermidis was showed continuous.

• 대한약침학회지
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• 제10권2호통권23호
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• pp.67-71
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• 2007

Objectives : This experimental study was performed to investigate the continuous anti-bacterial potency of Tangpo-san on cultivation of Staphylococcus species(S. aureus, S. epidermidis)that induce eye disease. Methods : Minimal inhibitory concentration(MIC) was measured by dropping to 50 ${\mu}$l diluted Tangpo-san(100%, 10%, 1%, 0.1%) on S. aureus, S. epidermidis that were cultivated from 2 to 6 days. Anti-bacterial potency was measured by the size of inhibition zone with change of volume(20 ${\mu}$l,30 ${\mu}$l,40 ${\mu}$l,50 ${\mu}$l). Results : 1. Anti-bacterial potency of Tanpo-san on S. aureus was not appeared all samples. Anti-bacterial potency with change of volume was increased in propotion to increase volume, and the Anti-bacterial potency of 2 days was equal to 6 days. Anti-bacterial potency of Tangpo-san on S. aureus was appeared continuous. 2. Anti-bacterial potency of Tangpo-san on S. epidermidis was appeared in 100%, 10% on 2 and 6 days, and the Anti-bacterial potency of 6 days was decreased. In 2 days, Anti-bacterial potency was appeared 40 and 50u1, in 6 days, Anti-bacterial potency was appeared all samples. Anti-bacterial potency with change of volume was increased in propotion to increase volume and increased on 6 days, but bacteria was increased. Anti-bacterial potency of Tangpo-san on S. epidermidis wasn't appeared continuous. Conclusions : Anti-bacterial potency of Tangpo-san on cultivation of S. aureus showed continuous, but on cultivation of S. epidermidis was not showed continuous.

• 대한약침학회지
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• 제10권2호통권23호
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• pp.19-23
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• 2007

Objectives : This experimental study was performed to investigate the continuous anti-bacterial potency of Sean-tang on cultivation of Staphylococcus species(S. aureus, S. epidermidis) that induce eye disease. Methods : Minimal inhibitory concentration(MIC) was measured by dropping to 50${\mu}$l diluted Sean-tang(100%, 10%,1%, 0.1%) on S. aureus, S. epidermidis that were cultivated from 2 to 6 days. 1. Anti-bacterial potency was measured by the size of inhibition zone with change of volume(20${\mu}$l, 30${\mu}$l, 40${\mu}$l, 50${\mu}$l). Results : 1. Anti-bacterial potency of Sean-tang on S. aureus was appeared in 100% and increased on 6 days. Anti-bacterial potency with change of volume was increased in propotion to increase volume. Anti-bacterial potency of Sean-tang on S. aureus was appeared continuous. 2. Anti-bacterial potency of S. epidermidis was appeared in 100%, 10%, 1% on 2 days and in100%, 10% on 6 days. In 100% Sean-tang, Anti-bacterial potency of 6 days was increased, in 10%, 1%, Anti-bacterial potency of 2 days was increased. Anti-bacterial potency with change of volume was increased inpropotion to increase volume and increased on 6 days, but bacteria was increased. Anti-bacterial potency Sean-tang on S. epidermidis wasn't appeared continuous. Conclusions : Anti-bacterial potency of Sean-tang on cultivation of S. aureus was showed continuous, but on cultivation of S. epidermidis was not showed continuous.

• Biomolecules & Therapeutics
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• 제1권2호
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• pp.177-182
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• 1993

From 84 clinical isolates of Staphylococcus species, ten strains showing inducible resistance to MLS antibiotics were selected by disk agar diffusion method. Colony hybridization was executed using two MLS inducible resistance genes, ermA and ermC, previously identified from S. aureus as probes. S. hemolyticus 401 and S. epidermidis 542 whose genes were not homologous to those probes were finally selected. It was determined that the resistance genes of S. hemolyticus 401 and S. epidermidis 542 were not homologous to ermA, ermC and ermAM by Southern hybridization. S. epidermidis 542 had a plasmid DNA. To know if the plasmid may have genes related to inducible resistance, it was attempted to transform B. subtilis BR151 and S. aureus RN4220 with the plasmid prepared from S. epidermidis 542. It was shown that the gene related to inducible resistance to MLS antibiotics did not exist in this plasmid. These results indicate that two clinical isolates of S. hemolyticus 401 and S. epidermidis 542 had novel genes which were not homologous to MLS resistance genes identified previously. It was assumed that these genes may exist in chromosomal DNA.

• Journal of Veterinary Science
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• 제25권2호
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• pp.30.1-30.16
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• 2024

Background: Biofilms, such as those from Staphylococcus epidermidis, are generally insensitive to traditional antimicrobial agents, making it difficult to inhibit their formation. Although quercetin has excellent antibiofilm effects, its clinical applications are limited by the lack of sustained and targeted release at the site of S. epidermidis infection. Objectives: Polyethylene glycol-quercetin nanoparticles (PQ-NPs)-loaded gelatin-N,O-carboxymethyl chitosan (N,O-CMCS) composite nanogels were prepared and assessed for the on-demand release potential for reducing S. epidermidis biofilm formation. Methods: The formation mechanism, physicochemical characterization, and antibiofilm activity of PQ-nanogels against S. epidermidis were studied. Results: Physicochemical characterization confirmed that PQ-nanogels had been prepared by the electrostatic interactions between gelatin and N,O-CMCS with sodium tripolyphosphate. The PQ-nanogels exhibited obvious pH and gelatinase-responsive to achieve on-demand release in the micro-environment (pH 5.5 and gelatinase) of S. epidermidis. In addition, PQ-nanogels had excellent antibiofilm activity, and the potential antibiofilm mechanism may enhance its antibiofilm activity by reducing its relative biofilm formation, surface hydrophobicity, exopolysaccharides production, and eDNA production. Conclusions: This study will guide the development of the dual responsiveness (pH and gelatinase) of nanogels to achieve on-demand release for reducing S. epidermidis biofilm formation.

• 한국응용과학기술학회지
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• 제37권1호
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• pp.145-152
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• 2020

본 연구에서는 붉나무 열매 Ethanol extract(ET)과 Ethyl acetate fraction(EA) 및 Butanol fraction(BT)을 천연보존제로서의 활용 가능성을 평가하기 위하여 항균활성을 측정 하였다. 항균활성은 Staphylococcus aureus(S. aureus), Staphylococcus epidermidis(S. epidermidis), Escherichia coli(E. coli), Pseudomonas aeruginosa(P. aeruginosa), Candida Albicans(Candida. A)에 대하여 Paper disc법으로 생육저해환과 최소저해농도(MIC)를 평가하였다. Paper disc법으로 생육저해환을 측정한 결과 ET, EA, BT 모든 시료에서 S. aureus, S. epidermidis, E. coli, P. aeruginosa 균주에서 생육저해환이 관찰되었고 BT에서는 Candida. A 균주에 대한 생육저해환이 추가로 관찰 되었다. MIC 측정결과 EA 시료가 S. aureus, S. epidermidis, E. coli, P. aeruginosa 대하여 가장 낮은 농도를 보였다. 따라서 본 연구의 결과는 붉나무 열매 추출물이 다양한 항균스펙트럼을 가지고 있어 화장품에서 천연보존제로 활용 가능성이 높다고 사료 된다.

• 대한약침학회지
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• 제10권2호통권23호
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• pp.87-91
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• 2007

Objectives : This experimental study was performed to investigate the continuous anti-bacterial potency of Jinpi-san on cultivation of Staphylococcus species(S. aureus, S. epidermidis) that induce eye disease. Methods : Minimal inhibitory concentration(MIC) was measured by dropping to 50${\mu}$l diluted Jinpi-san(100%, 10%, 1%, 0.1%) on S. aureus, S. epidermidis that were cultivated from 2 to 6 days. Anti-bacterial potency was measured by the size of inhibition zone with change of volume(20${\mu}$l, 30${\mu}$l, 40${\mu}$l, 50${\mu}$l). Results : 1. Anti-bacterial potency of Jinpi-san on S. aureus was appeared in 100% and increased on 6 days. Anti-bacterial potency with change of volume was increased in propotion to increase volume. Anti-bacterial potency of Jinpi-san on S. aureus was appeared continuous. 2. Anti-bacterial potency of Jinpi-san on S. epidermidis was appeared in 100%, 10%, 1% on 2 days and in 100%, 10% on 6 days. In 100% Jinpi-san, Anti-bacterial potency of 6 days was increased, in 10%, Anti-bacterial potency of 2 days was increased, in 1%, Anti-bacterial potency of 6 days was disappear. Anti-bacterial potency with change of volume was increased in propotion to increase volume except for 20${\mu}$l of 6days and increased on 6 days, but bacteria was increased. Anti-bacterial potency of Jinpi-san on S. epidermidis wasn't appeared continuous. Conclusions : Anti-bacterial potency of Jinpi-san on cultivation of S. aureus was showed continuous, but on cultivation of S. epidermidis was not showed continuous.

• 생명과학회지
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• 제17권4호
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• pp.581-586
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• 2007

본 연구에서는 피부상재균이며 기회병원균이기도 한 Staphylococcus epidermidis ATCC12228로부터 urease효소를 4단계 크로마토그라피 방법을 사용하여 1,127배 정제하고 그 생화학적인 특성을 규명하였다. 정제된 urease 효소는 SDS-PACE 전기영동분석 및 gel-filtration 크로마토그라피를 이용한 천연분자량 분석결과, 67, 16.1 및 12.7 kDa의 3개 subunit가 3량체로 회합되어 존재하는 것으로 나타났으며 catalytic unit 당 2.2개의 니켈 원소를 함유하는 것으로 측정되었다. 정제된 효소의 비활성은 993.8 U/mg, $K_m$값은 8.5mM로 각각 산출되었다.