What question did this study set out to answer?

To evaluate how degree of branching and helical conformation in fungal (1->3)-beta-D-glucans influence the activation of the classical and alternative complement pathways.

January 1, 1992Journal of Pharmacobio-DynamicsOpen Access

Activation of the Complement System by (1.RAR.3)-.BETA.-D-Glucans Having Different Degrees of Branching and Different Ultrastructures.

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Authors

TSTatsuya SuzukiTaiho Pharmaceutical (Japan)NONaohito OhnoTokyo University of Pharmacy and Life Sciences KSKazuo SaitoYamagata University

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Implication

In vitro study demonstrates distinct complement pathway activation in human serum and plasma, indicating that glucan conformation and branching govern immune recognition.

Key Points

To evaluate how degree of branching and helical conformation in fungal (1->3)-beta-D-glucans influence the activation of the classical and alternative complement pathways.
Tested five fungal (1->3)-beta-D-glucans with varying degrees of branching (curdlan [0/1], grifolan [1/3], schizophyllan [1/3], SSG [1/2], and OL-2 [2/3]) in human serum and plasma.
Prepared single- and triple-helix conformers via thermal dissolution at 150 °C or sodium hydroxide treatment.
Analyzed pathway-specific complement activation over time and characterized glucan-immunoglobulin complexes using gel permeation chromatography.
Triple-helix conformers activated the alternative complement pathway more strongly than single-helix conformers, with activity modulated by incubation duration, concentration, molecular weight, and branching degree.
Single-helix conformers preferentially activated the classical complement pathway in a branching-dependent manner, mediated by binding to serum immunoglobulins as confirmed by chromatography.
Alternative complement pathway activation by branched glucans was consistently weaker in human plasma than in human serum.

Cite This Study

Suzuki et al. (1992) studied this question.

synapsesocial.com/papers/6a778bfbc5ab23c76cecb9bc https://doi.org/10.1248/bpb1978.15.277

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Implication

In vitro study demonstrates distinct complement pathway activation in human serum and plasma, indicating that glucan conformation and branching govern immune recognition.

Activation of the Complement System by (1.RAR.3)-.BETA.-D-Glucans Having Different Degrees of Branching and Different Ultrastructures.

Discussion

Member takes

Implication

Key Points

Cite This Study

Activation of the Complement System by (1.RAR.3)-.BETA.-D-Glucans Having Different Degrees of Branching and Different Ultrastructures.

Discussion

Member takes

Implication

Key Points

Cite This Study

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