• Title/Summary/Keyword: Streptodornase

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Expression of Streptodornase by Use of Streptokinase Promoter in Streptococcus equismilis H46A. (Streptococcus equisimilis H46A에서 Streptokinase 프로모터를 이용한 Streptodornase 발현 증진)

  • Son, Hyun-Jung;Jin, Jong-Eon;Kim, Il-Chul;Bae, Seok;Lee, Hwang-Hee
    • Microbiology and Biotechnology Letters
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    • v.31 no.3
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    • pp.307-310
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    • 2003
  • A gene encoding streptodornase(sdc) from Streptococcus equisimilis H46A was expressed in S. equisimilis H64H sdc under the control of the streptokinase gene promoter. Secretion of the streptodornase was directed by the signal sequences of streptokinase or streptodornase. The expressed streptodornase activity from S. equisimilis H46A sdc transformant with streptokinase promoter - streptodornase coding sequence fusion vector was 2.3 fold higher than that from wild type. Construct of signal sequence region replaced by streptokinase ones was similarly expressed as a wild type. But constructs of skc or lrp core regions of streptokinase promoter streptodornase fusion were similarly expressed as in sdc mutant. In conclusion, improved expression of streptodornase by use of streptokinase promoter required the full length of promoter.

Strain Improvement for Enhanced Production of Streptokinase and Streptodornase in Streptococcus sp.

  • HYUN, HYUNG-HWAN;YOON-BUM LEE;KYUNG-HWA SONG;JI-YOUNG JEON;HYUNE-HWAN LEE
    • Journal of Microbiology and Biotechnology
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    • v.7 no.2
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    • pp.101-106
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    • 1997
  • Strain improvement for the enhanced production of streptokinase and streptodornase in Streptococcus sp. ATCC 12449 was performed. Strain UB111, a hyperproductive mutant which was isolated by use of nitrosoguanidine and selection of colonies with large clear zones on DNase test agar plates supplemented with $1{\%}$ glucose and $0.5{\%}$ ammonium chloride, produced about 3 fold more streptokinase and streptodornase than the wild type when tested in shake flask fermentations. The enhanced production of both streptokinase and streptodornase was achieved by cultivating the mutant in a pH-controlled fermentor containing fermentation medium enriched with yeast extract ($2.1{\%}$). Under these conditions, the mutant produced 7300 units/ml of streptokinase and 800 units/ml of streptodornase.

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A Study on Influences of the Antibacterial Activity of Methampicillin Lysinate by the Several Medicinals (병용약물(倂用藥物)이 Methampicillin Lysinate의 항균력(抗菌力)에 미치는 영향(影響))

  • Kim, Seung-Up;Kim, Young-Il;Kim, Johng-Kap
    • Journal of Pharmaceutical Investigation
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    • v.8 no.1
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    • pp.1-5
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    • 1978
  • Drug interaction of a new antibiotic, methampicillin lysinate (MAL) with nine drugs were investigated using four species of gram positive and gram negative bacteria. The experimental results were as follows: 1. MIC of MAL were found to be decreased against E. coil when combined with mefenamic acid, probenecid, aluminium hydroxide gel or corticosteroids. The other drugs did not affect MIC of MAL against the same bacteria. 2. MIC of MAL were found to be increased against Staphylococcus aureus ATCC 6538-P, 9441 when combined with mefenamic acid, aluminum hydroxide gel or dexamethasone acetate. The other drugs did not affect MIC of MAL against the same bacteria. 3. MIC of MAL were found to be increased against Shigella dysenteriae when either of the nine drugs was combined. 4. MIC of MAL were found to be increased approximately 2.5 times when combined with Streptokinase-Streptodornase or hydrocortisone and to be decreased approximately 2 times when combined with probenecid or dexamethasone against Salmonella typhi(type 2). It seems the other drugs do not affect the MIC of MAL against the same bacteria.

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Spontaneous Discharge of a Dental Implant Displaced Into Maxillary Sinus: A Case Report (자발적으로 배출된 상악동 내 함입되었던 임플란트: 증례보고)

  • Cho, Seung-Yeon;Kim, Su-Yeon;Kim, In-Soo;Lee, Won
    • Implantology
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    • v.22 no.4
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    • pp.236-241
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    • 2018
  • This case report is to report an extraordinary case of the spontaneous discharge of a dental implant. A 45-year-old woman was referred to our department complaining of symptoms of acute Maxillary sinusitis. She underwent a computed tomography scan that revealed a dental implant dislocated in the maxillary sinus. A preoperative medical treatment [Amoxicillin - Clavulanate (375 mg) and Streptokinase-Streptodornase (12500IU)] three times a day for two weeks was administered in order to prepare her for surgery. Unexpectedly, she reported that she had discharged the implant from mouth in the early morning. Mucociliary clearance in combination with a local osteolytic inflammatory process and mucolytics therapy are the likely causes of this unusual discharge.