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PMID:16020269

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Citation

Gordon, YJ, Huang, LC, Romanowski, EG, Yates, KA, Proske, RJ and McDermott, AM (2005) Human cathelicidin (LL-37), a multifunctional peptide, is expressed by ocular surface epithelia and has potent antibacterial and antiviral activity. Curr. Eye Res. 30:385-94

Abstract

This study determined whether LL-37 (cathelicidin) is expressed by conjunctival and corneal epithelia as part of ocular host defense. The antimicrobial activity of LL-37 was also assessed in vitro against Pseudomonas aeruginosa (PA), Staphylococcus aureus (SA), Staphylococcus epidermidis (SE), herpes simplex virus type 1 (HSV-1), and adenovirus (Ad).

Links

PubMed PMC1497871 Online version:10.1080/02713680590934111

Keywords

Adenoviridae/drug effects; Anti-Bacterial Agents/pharmacology; Antimicrobial Cationic Peptides/genetics; Antimicrobial Cationic Peptides/pharmacology; Antiviral Agents/pharmacology; Cell Culture Techniques; Conjunctiva/cytology; Conjunctiva/metabolism; Epithelial Cells/metabolism; Epithelium, Corneal/metabolism; Gene Expression; Herpesvirus 1, Human/drug effects; Humans; Immunoblotting; Pseudomonas aeruginosa/drug effects; RNA, Messenger/metabolism; Reverse Transcriptase Polymerase Chain Reaction; Staphylococcus aureus/drug effects; Staphylococcus epidermidis/drug effects

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

HUMAN:CAMP

GO:0042742: defense response to bacterium

ECO:0000314:

P

The human cathelicidin antimicrobial peptide can be cleaved into two peptides, one of which being the antibacterial peptide LL-37. The antibacterial activity of LL-37 against Pseudomonas Aeruginosa, Staphylococcus Aureus, and Staphylococcus Epidermidis was tested using an antibacterial assay. The results showed that at 100 μg/ml, LL-37 was completely bactericidal for all strains of PA, as shown in Figure 2. LL-37 also showed potent bactericidal activity against SA and SE with EC50 values being 1.6 ± 1.5 (n = 3) and 1.31.9 (n 3) μg/ml, respectively.

complete
CACAO 12385

HUMAN:CAMP

GO:0051873: killing by host of symbiont cells

ECO:0000314:

P

Human cathelicidin antimicrobial peptide has the ability to kill the cells of other organisms. It can be cleaved into two peptides, one of which being the antibacterial peptide LL-37. The antibacterial activity of LL-37 against Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus epidermidis was tested using an antibacterial assay. The results showed that at 100 μg/ml, LL-37 was completely bactericidal for all strains of Pseudomonas aeruginosa (Figure 2). LL-37 also showed potent bactericidal activity against Staphylococcus aureus and Staphylococcus epidermidis with EC50 values being 1.6 ± 1.5 (n = 3) and 1.31.9 (n 3) μg/ml, respectively (Figure 2).

complete
CACAO 12515

HUMAN:CAMP

GO:0002376: immune system process

ECO:0000314:

P

Human cathelicidin antimicrobial peptide plays a role in immune system processes. It can be cleaved into two peptides, one of which being the antibacterial peptide LL-37. The antibacterial immune activity of LL-37 against Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus epidermidis was tested using an antibacterial assay. The results showed that at 100 μg/ml, LL-37 was completely bactericidal for all strains of Pseudomonas aeruginosa (Figure 2). LL-37 also showed potent bactericidal activity against Staphylococcus aureus and Staphylococcus epidermidis with EC50 values being 1.6 ± 1.5 (n = 3) and 1.31.9 (n 3) μg/ml, respectively (Figure 2).

complete
CACAO 12516

HUMAN:CAMP

GO:0016045: detection of bacterium

ECO:0000314:

P

Human cathelicidin antimicrobial peptide has the ability to detect bacterial cells and express antibacterial activity against them. It can be cleaved into two peptides, one of which being the antibacterial peptide LL-37. The antibacterial activity of LL-37 against Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus epidermidis was tested using an antibacterial assay. The results showed that at 100 μg/ml, LL-37 was completely bactericidal for all strains of Pseudomonas aeruginosa (Figure 2). LL-37 also showed potent bactericidal activity against Staphylococcus aureus and Staphylococcus epidermidis with EC50 values being 1.6 ± 1.5 (n = 3) and 1.31.9 (n 3) μg/ml, respectively (Figure 2).

complete
CACAO 12517

Notes

See also

References

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