Citreamicin alpha
Citreamicin alpha (LL-E 19085-alpha) is an antibiotic whose in vitro antimicrobial activity against 429 clinical isolates of Gram-positive cocci has been tested by the agar dilution method. These microorganisms included 313 strains of Staphylococci and 116 strains of Streptococci. The in vitro activity of Citreamicin alpha was compared with that of ampicillin, amoxicillin, ceftriaxone, erythromycin, and vancomycin. For Staphylococci, the MIC values of Citreamicin alpha ranged from 0.12-4.0 μg/ml, and for Streptococcus pyogenes of the genus Streptococcus, it was 0.03-0.12 μg/ml. However, enterococci were relatively resistant, requiring 2.0 μg/ml of the agent to inhibit 64% of the 62 tested strains. The in vitro activity of this antibiotic was much better than that of ampicillin, amoxicillin, ceftriaxone, and erythromycin, but comparable or slightly inferior to that of vancomycin.
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- No. CAS: 122535-63-1
- Fòrmula: C36H31NO12
- Peso molecular:669.63
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Almacenamiento:
Please store the product under the recommended conditions in the Certificate of Analysis.
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Actividad biológica
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Chemical Information
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Actividad biológica
Descripciòn
Chemical Information
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No. CAS 122535-63-1
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Peso molecular 669.63
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Fòrmula C36H31NO12
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SMILES
O=C1C(OC2=CC(OC)=C(C=C23)OC)=C(C(C4=C5C(O)=C(C(N6C(C)(C7)OC(C6(COC(CC(C)C)=O)C)=O)=O)C7=CC5=CC=C41)=O)C3=O
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Synonyms
LL-E19085α
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Structure Classification
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Initial Source
Micromonospora citrea
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Envío
Room temperature in continental US; may vary elsewhere.
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Almacenamiento
Please store the product under the recommended conditions in the Certificate of Analysis.
Protocolo
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Research Protocol for Infectious Diseases
Infectious-disease experiments test how pathogens interact with host barriers, innate immune receptors, inflammatory signaling, pathogen replication, and tissue injury; pattern-recognition receptors such as TLRs, RIG-I-like receptors, NOD-like receptors, and inflammasomes detect microbial molecules and activate NF-κB, interferon, and cytokine responses. The central hypothesis is that infection severity reflects the balance between pathogen burden and host response: protective inflammation restricts pathogen growth, whereas excessive or mislocalized inflammation contributes to tissue damage and disease phenotype. Unresolved questions include which host pathways are protective versus pathogenic, why some infection models fail to translate to human disease, and which combined readouts best predict clinically relevant infection outcomes.
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Gram Staining of Tissue Sections
Gram staining of tissue sections is a histochemical technique used to differentiate Gram-positive and Gram-negative bacteria within histological specimens based on differences in bacterial cell wall structure and dye retention, adapted from classical bacteriological Gram staining into tissue-compatible “histological Gram stain” variants. In tissue applications, modifications of the Brown-Hopps and Brown-Brenn methods are commonly used to improve differentiation of microorganisms embedded within host connective tissue and to reduce overstaining or loss of Gram-negative signal, which are known limitations of earlier approaches. The principle relies on crystal violet-iodine complex retention in Gram-positive organisms and subsequent decolorization and counterstaining steps that allow contrast visualization of Gram-negative organisms against tissue background.
Pureza y Documentación
Referencias
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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