• Title/Summary/Keyword: staphylococcus

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Characterization of Tetracycline Resistant Plasmid in Staphylococcus aureus by Restriction Enzyme Mapping (황색포도상구균에서 테트라사이클린 내성을 나타내는 플라스미드의 동정)

  • Kim, Ki-Hyun;Kim, Jong-Myung;Moon, Kyung-Ho
    • YAKHAK HOEJI
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    • v.36 no.3
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    • pp.255-258
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    • 1992
  • The clinical isolate Staphylococcus aureus SA8 was resistant to tetracycline(Tc) and harboured a plasmid pKH1(24.82 kb). pKH1 was shown by curing and by transformation to specify resistance to Tc. The cleavage map of a pKH1 was determined by restricction enzyme mapping techniques. Cleavage map is given for BglII, EcoRI, HpaII, PvuII and SalI. Restriction endonuclease BamHI, BglI, BstEII, HpaI, PstI, and XhoI have no sites on this plasmid. HaeIII, XbaI, and HindIII have 5, 6, 14 sites, respectively.

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Isolation and Effect of Antimicrobial Compounds from Extracts of Salvia Miltiorrbiza Bunge (丹參 추출물로부터 항균물질의 분리와 항균효과)

  • Song Kyoung-song;Jeong Seung-il;Ju Young-sung;Moon Kwang-hyun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.17 no.1
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    • pp.126-130
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    • 2004
  • Objectives; Bioassay-directed fractionation of the dried roots of Salvia miltiorrhiza led to the isolation of abietane tanshinones, crptotanshinone and dihydrotanshinone. Methods: Their structures were elucidated using 1H-and 13C-NMR, UV, IR and mass spectral analysis. Result and Conclusions : These compounds exhibited a moderate antimicrobial activities against Staphylococcus epidemidis, Staphylococcus aureus, Staphylococcus pyogene. Actinobacillus actinomycetemcomitans, Escherichia coil, Enterbacter cloacae, Pseudomonas aeruginosa, Citrobacter freundii, and Samonella typhimurium.

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A Study on Antibiotics Susceptibilities of Staphylococci Isolated from the Atmosphere of Home Kitchens in Busan (주방공기중에서 분리된 포도상구균의 함생물질에 대한 감응성연구(1))

  • 박재림
    • Journal of Environmental Health Sciences
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    • v.5 no.1
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    • pp.51-57
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    • 1978
  • Antibiotics susceptibilities of Staphylococci were tested to get useful data for prevention food contamination and treatment of food poisoning. Tested were colony counts, isolation of Staphylococci, identification for the Staphylococcus aureus and resistant patterns to antimcrobial agents. The colonies and Staphylococci isolated from the atmosphere of 37 home kitchens in the morning (07:00-08:00) on Nov. 19, 1977 in Busan. The findings are as follows: 1. The average of colony counts was shown to be 9.6 ranging from 47 to 1 at mean temperature of 18$\circ$C (the highest 21$\circ$C, the lowest 15$\circ$C) 2. Out of total 37 kitchens, 18 Staphylococci were isolated from 15 kitchens with 40.5 per cent, and 4 Staphylococcus aureus were identified with 22.2 per cent from 18 Staphylococci. 3. Isolated Staphylococci were resistant to penicillin(100%), dihydrostreptomycin(93.3%), tetracycline (93.3%) and oleandomycin(66.6%), while the strains were sensitive to sulfonamide(88.6%) and colistin(83.3%). 4. Staphylococcus aureus identified were resistant to dihydrostreptomycin, penicillin and tetracycline, while the strains were sensitive to sulfonamide and colistin.

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Studies on the Syntheses and Antimicrobial Activity of Carbanilide Derivatives (Carbanilide 유도체의 합성 및 항균작용에 관한 연구)

  • 강회양
    • Journal of Environmental Health Sciences
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    • v.7 no.2
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    • pp.107-111
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    • 1981
  • Thirteen Carbanilides, P-chloro, bromo, methyl, ethyl, methoxy and ethoxy carbanilides, 4,4'-dichlorocarbahilide, and 4-bromo, methyl, ethyl, methoxy and ethoxy 4'-chlorocarbanilides have been newly synthesized by reacting P-phenetidime, P-anisidime, anilime, P-chloroanilime, P-bromoanilime, P-methoxy aniline, and P-ethoxy anilime with phenyl and P-chlorophenyl isocyanate, respectively. The compounds generally exhibited antibacterial activity against Escherichia coli, and staphylococcus aureus. The results obtained were as follows 4-chlorocarbanilide and 4,4'-clichlorocarbanilide were active against Eschrichia Coli, and Staphylococcus aureus at the concentration of 50 ug/ml. 4-methyl-4'-chloro carbanilide, and 4-ethoxy-4'-chloro carbanilide were active against Escherichia Coli at the concentration of 100ug/ml. 4-methyl-4'-chloro canbanilide were active against Staphylococcus aureus at the concentration of 50ug/ml.

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Enterotoxin Production and DNA Fingerprinting of Staphylococcus aureus Isolated from Diverse Samples by Pulsed-Field Gel Electrophoresis

  • Suh, Dong-Kyun
    • Biomedical Science Letters
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    • v.11 no.3
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    • pp.295-299
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    • 2005
  • Staphylococcus aureus is an important animal and human pathogen implicated in a variety of disease including food-poisoning caused by staphyloccal enterotoxins (SEs). In order to investigate the difference in genomic types and to monitor the transmission of S. aureus isolates, a total of 25 S. aureus isolates from different sources were determined for their genotypic characteristics by pulsed-field gel electrophoresis (PFGE) in addition to their ability to enterotoxin production and antibiotic resistance patterns in this study. All the isolates were susceptible to amikacin, and the resistance pattern to ampicillin and penicillin were most common among 14 different patterns. Eleven of 24 isolates produced one of three SEs, SEA, SEC or SED. Sixteen representative PFGE patterns were obtained by Smal restriction fragments of S. aureus isolates. Analysis of dendrogram based on PFGE band patterns suggested that food-poisoning outbreaks be caused by the diverse sources of food, of which their raw materials were infected with S. aureus. Also, it could be concluded that PFGE was a powerful tool for epidemiological tracing of infection source for food-initiated outbreaks.

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A comparison of RPLA and PCR for detection of enterotoxins in methicillin-resistant Staphylococcus aureus(MRSA) strains isolated in dogs

  • Park, Son-il;Han, Hong-ryul
    • Korean Journal of Veterinary Research
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    • v.39 no.4
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    • pp.806-810
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    • 1999
  • A multiplex-polymerase chain reaction (PCR) assay was used to detect staphylococcal enterotoxin production by 12 strains of Staphylococcus aureus isolated from clinical specimens. To evaluate the efficacy and/or sensitivity of this method, the results were compared to those obtained with the reversed passive latex agglutination kit (SET-RPLA, Denka Seiken, Japan). Of 10 strains positive by PCR were positive by RPLA but two strains, representing high sensitivity of the former method. Enterotoxin B was the most prevalent by the two methods. The kappa index between the two methods was 0.826, indicating a higher agreement and fully reliable for use. These results would suggest that sensitive, inexpensive, and relatively rapid multiplex-PCR technique may be an effective means for the detection of staphylococcal enterotoxin genes as an alternative to traditional methods such as kits or immunological methods, which depend upon the amount of enterotoxin produced.

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Characterization of Chloramphenicol Resistant Plasmid of Multidrug-resistant Staphylococcus aureus (다제내성 황색포도상구균이 가지고 있는 클로람페니콜 내성 플라스미드의 동정)

  • 이대운;문경호
    • YAKHAK HOEJI
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    • v.37 no.6
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    • pp.621-624
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    • 1993
  • The clirical isolate Staphylococcus aureus SA2 had four kinds of plasmids and was resistant to ampicillin, chloroamphenicol, clindamycin. erythromycin, gentamicin, kanamycin, methicillin, streptomycin, tetracycline and tobramycin. Transformation experiment demonstrated that 4.14kb plasmid(pKH7) encoded resistance to chloramphenicol. The cleavage map of pKH7 was determined by restriction enzyme mapping techniques. The cleavage map is given for BstEll, Hindlll, Hpall, and Xbal. The above restriction endonucleases have a single site, but nucleases BamHl, Bgll, BglII, EcoRl, EcoRV, HaeIII, Hpal, Kpnl, Pstl, PvnII, Sall, Smal, and XhoI have no site on this plasmid.

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Effects of Staphylococcus carnosus on Quality Characteristics of Sucuk (Turkish Dry-Fermented Sausage) During Ripening

  • Kaban, Guzin;Kaya, Mukerrem
    • Food Science and Biotechnology
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    • v.18 no.1
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    • pp.150-156
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    • 2009
  • In this study, Staphylococcus carnosus isolated from traditional sucuk (Turkish dry-fermented sausage) was used in combination with Lactobacillus plantarum as a lactic culture in sucuk production. Sucuk produced with only L. plantarum was evaluated as a control group. Microbiological, physicochemical, and volatile profile characteristics of sucuk samples were investigated during ripening. In both sausages with S. carnosus and control group, pH value decreased to below 5.0 at the $3^{rd}$ day. In all samples, Aw value decreased as the ripening time progressed. Sausages with S. carnosus showed the higher nonprotein nitrogen (NPN) value than control group. However, the highest mean value for thiobarbituric acid reactive substances (TBARS) was observed in control group. Enterobacteriaceae dropped to undetectable levels at the $3^{rd}$ day in both groups. S. carnosus increased approximately 1 log unit within the first 3 days of the fermentation. In the presence of S. carnosus, significant changes were observed in only a few volatile compounds.

Aspiration pneumonia due to grain particle in a tammar wallaby (Macropus eugenii) with Staphylococcus aureus pneumonia

  • Jo, Ho-Seong;Park, Nam-Yong
    • Korean Journal of Veterinary Research
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    • v.46 no.3
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    • pp.267-269
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    • 2006
  • A 12-year-old female Tammar Wallaby (Macropus eugenii) died after a 6-day history of depression, anorexia, and coughing. The necropsy revealed pustules of varying sizes on the lung surface from which a pure culture of Staphylococcus aureus was isolated. Histopathologically, the pulmonary nodules formed typical granulomatous inflammation. The center of the granulomatous foci consisted of a necrotic center and grain particles with gram positive cocci that were surrounded by eosinophilic club-like bodies containing Splendore-Hoeppli material. To our knowledge, this is the first report of aspiration pneumonia with respiratory botryomycosis as a result of grain inhalation in a Tammar Wallaby.

항생제 다제내성균 Staphylococcus aureus SA2로부터 분리한 테트라사이클린 내성 플라스미드 pKH6의 염기서열

  • Lee, Dae-Woon;Yoon, Sung-Joon;Kim, Woo-Koo;Shin, Chul-Kyo;Im, Sung-Hwan;Lee, Baek-Rak;Moon, Kyung-Ho
    • Microbiology and Biotechnology Letters
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    • v.24 no.4
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    • pp.423-426
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    • 1996
  • The complete nucleotide sequence of pKH6, a tetracycline-resistance (Tc$^{r}$) plasmid isolated from multi-drug resistant Staphylococcus aureus SA2, has been determined and compared with that of the staphylococcal Tc$^{r}$ plasmid pTl8l. The nucleotide sequences of the two plasmids are in agreement except for 7 nucleotides. All differences are caused by base pair substitutions. Among 6 substitutions, 3 occurred in coding regions. However, only two base substitutions in coding regions resulted in changes of amino acid sequences in two different ORFs of repC and Pre proteins.

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