TY - JOUR
T1 - Characterization of the hemorrhagic reaction caused by Vibrio vulnificus metalloprotease, a member of the thermolysin family
AU - Miyoshi, Shin Ichi
AU - Nakazawa, Hiromi
AU - Kawata, Koji
AU - Tomochika, Ken Ichi
AU - Tobe, Kazuo
AU - Shinoda, Sumio
PY - 1998
Y1 - 1998
N2 - Vibrio vulnificus is an opportunistic human pathogen causing wound infections and septicemia, characterized by hemorrhagic and edematous damage to the skin. This human pathogen secretes a metalioprotease (V. vulnificus protease [VVP]) as an important virulence determinant. When several bacterial metalioproteases including VVP were injected intradermally into dorsal skin, VVP showed the greatest hemorrhagic activity. The level of the in vivo hemorrhagic activity of the bacterial metalloproteases was significantly correlated with that of the in vitro proteolytic activity for the reconstituted basement membrane gel. Of two major basement membrane components (laminin and type IV collagen), only type IV collagen was easily digested by VVP. Additionally, the immunoglobulin G antibody against type IV collagen, but not against laminin, showed sufficient protection against the hemorrhagic reaction caused by VVP. Capillary vessels are known to be stabilized by binding of the basal surface of vascular endothelial cells to the basement membrane. Therefore, specific degradation of type IV collagen may cause destruction of the basement membrane, breakdown of capillary vessels, and leakage of blood components including erythrocytes.
AB - Vibrio vulnificus is an opportunistic human pathogen causing wound infections and septicemia, characterized by hemorrhagic and edematous damage to the skin. This human pathogen secretes a metalioprotease (V. vulnificus protease [VVP]) as an important virulence determinant. When several bacterial metalioproteases including VVP were injected intradermally into dorsal skin, VVP showed the greatest hemorrhagic activity. The level of the in vivo hemorrhagic activity of the bacterial metalloproteases was significantly correlated with that of the in vitro proteolytic activity for the reconstituted basement membrane gel. Of two major basement membrane components (laminin and type IV collagen), only type IV collagen was easily digested by VVP. Additionally, the immunoglobulin G antibody against type IV collagen, but not against laminin, showed sufficient protection against the hemorrhagic reaction caused by VVP. Capillary vessels are known to be stabilized by binding of the basal surface of vascular endothelial cells to the basement membrane. Therefore, specific degradation of type IV collagen may cause destruction of the basement membrane, breakdown of capillary vessels, and leakage of blood components including erythrocytes.
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U2 - 10.1128/iai.66.10.4851-4855.1998
DO - 10.1128/iai.66.10.4851-4855.1998
M3 - Article
C2 - 9746589
AN - SCOPUS:0031686026
VL - 66
SP - 4851
EP - 4855
JO - Infection and Immunity
JF - Infection and Immunity
SN - 0019-9567
IS - 10
ER -