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KMID : 1240020120160030122
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International Neurourology Journal
2012 Volume.16 No. 3 p.122 ~ p.125
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Effect of Anti-Siglec-F Antibody and Reactive Oxygen Species Blocking on Histamine Release in Urinary Bladder of Ovalbumin-Treated Mice
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Choi Bo-Hwa
Choo Gwoan-Youb
Cho Ji-Yoon
Lee Choong-Yeol
Park Chang-Shin
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Abstract
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Purpose: Sialic acid-binding Ig-like lectin (Siglec) is an immune inhibitory receptor that plays a role in the negative regulation of the activation of immune cells. This study aimed to evaluate the effects of anti-Siglec-F on plasma and urinary histamine levels in ovalbumin (OVA)-challenged urinary bladder in mice.
Methods: Thirty BALB/c mice were used. In group I (control group, n=5), mice were sensitized with OVA and challenged with saline. In group II (OVA challenge group, n=5), OVA was used for intraperitoneal sensitization and intravesical challenge. The challenged mice in group III (control immunoglobulin G [IgG] group, n=5) and those in group IV (anti-Siglec-F group, n=5) were intraperitoneally pretreated with rabbit control IgG or anti-Siglec-F antibody, respectively. In groups V (N-acetylcysteine [NAC] in OVA challenge group, n=5) and VI (control NAC only, n=5), mice were pretreated with NAC.
Results: Urinary histamine concentrations were significantly higher 7 days after intravesical OVA challenge (P<0.01), whereas plasma histamine levels were not. Pretreatment with anti-Siglec-F antibody significantly prevented the increase in urinary histamine release (P<0.05), whereas pretreatment with the IgG antibody control did not. Also, pretreatment of the OVA challenge group with NAC did not affect the histamine concentration in either urine or plasma.
Conclusions: Systemic anti-Siglec-F treatment showed anti-allergic effects at least on local histamine release, particularly in the lower urinary bladder.
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KEYWORD
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Histamine, Mice, Ovalbumin, Reactive oxygen species, Sialic acid binding Ig-like lectin, Urinary bladder
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