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2017 ; 7
(1
): 15545
Nephropedia Template TP
gab.com Text
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English Wikipedia
The Antibacterial and Anti-inflammatory Activity of Chicken Cathelicidin-2
combined with Exogenous Surfactant for the Treatment of Cystic
Fibrosis-Associated Pathogens
#MMPMID29138462
Banaschewski BJH
; Baer B
; Arsenault C
; Jazey T
; Veldhuizen EJA
; Delport J
; Gooyers T
; Lewis JF
; Haagsman HP
; Veldhuizen RAW
; Yamashita C
Sci Rep
2017[Nov]; 7
(1
): 15545
PMID29138462
show ga
Cystic fibrosis (CF) is characterized by recurrent airway infections with
antibiotic-resistant bacteria and chronic inflammation. Chicken cathelicin-2
(CATH-2) has been shown to exhibit antimicrobial activity against
antibiotic-resistant bacteria and to reduce inflammation. In addition, exogenous
pulmonary surfactant has been suggested to enhance pulmonary drug delivery. It
was hypothesized that CATH-2 when combined with an exogenous surfactant delivery
vehicle, bovine lipid extract surfactant (BLES), would exhibit antimicrobial
activity against CF-derived bacteria and downregulate inflammation. Twelve
strains of CF-pathogens were exposed to BLES+CATH-2 in vitro and killing curves
were obtained to determine bactericidal activity. Secondly, heat-killed bacteria
were administered in vivo to elicit a pro-inflammatory response with either a
co-administration or delayed administration of BLES+CATH-2 to assess the
antimicrobial-independent, anti-inflammatory properties of BLES+CATH-2. CATH-2
alone exhibited potent antimicrobial activity against all clinical strains of
antibiotic-resistant bacteria, while BLES+CATH-2 demonstrated a reduction, but
significant antimicrobial activity against bacterial isolates. Furthermore,
BLES+CATH-2 reduced inflammation in vivo when either co-administered with killed
bacteria or after delayed administration. The use of a host-defense peptide
combined with an exogenous surfactant compound, BLES+CATH-2, is shown to exhibit
antimicrobial activity against antibiotic-resistant CF bacterial isolates and
reduce inflammation.
|Achromobacter denitrificans/*drug effects
[MESH]
|Adult
[MESH]
|Anti-Bacterial Agents/pharmacology
[MESH]
|Antimicrobial Cationic Peptides/*pharmacology/therapeutic use
[MESH]