Abstract
The complement system is a group of plasma proteins that can interact with antigen antibody complexes and the surface of microbes and certain cells for the purpose of protecting the host against such noxious antigens (1–3). The complement proteins account for about 5% of the total plasma proteins; activation of the complement proteins occurs sequentially and is characterized by a conversion of proteolytic zymogens to active proteinases that catalyze conversion of other zymogens to active enzymes further down the sequence (4). There are two pathways of activation for complement, the classical pathway that is generally dependent on the formation of specific antibody, and the alternative pathway, that represents a system for resistance to infection in a non-immune host. One should note that of the twenty complement components, only five are so far identified as proteinases as shown in the activation scheme on Fig. 1: The proteinases are C1¯r, C1¯s, C2¯a in the classical pathway and D¯ and Bb¯ in the alternative pathway; there is no zymogen form for D¯. All are serine proteases whereby C1¯r, C1¯s and D¯ possess catalytic peptide chains of about 25’000 m wt. Trypsin, plasmin, pronase and chymotrypsin are known to activate C1¯ (2); accordingly tryptic and chymotriptic inhibitors, as well as liquoid and antrypol can be used to inhibit C1¯s (8), whereby a naturally occuring plasma protein, the C1 esterase inhibitor inhibits C1¯r and C1¯s but also plasma kallikrein, plasmin, trypsin, chymotrypsin, Hagemann factor (factor XIIa) and activated thromboplastin antecedent (XIa).
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References
R. R. Porter and K. B. M. Reid, The biochemistry of complement, Nature 275: 699 1978.
M. Loos, The classical complement pathway: mechanism of activation of the first component by antigen-antibody complexes, Progr. Allergy 30: 135 1982.
M. D. Kazatchkine and U. E. Nydegger, The human alternative complement pathway: biology and immunopathology of activation and regulation, Progr. Allergy 30: 193 1982.
R. R. Porter, The proteolytic enzymes of the complement system, in: “Methods in Enzymology, Proteolytic Enzymes,” L. Lorand, ed., Academic Press, New York (1981).
V. A. Bokisch, H. J. Mueller-Eberhard, and C. C. Cochrane, Isolation of a fragment (C3a) of the third component of human complement containing anaphylatoxin and chemotactic activity and description of an anaphylatoxin inactivator of human serum, J. exp. Med. 129: 1109 1969.
P. Venge and I. Olsson, Cationic proteins of human granulocytes. IV. Effects of the complement system and mediation of chemotactic activity, J. Immunol. 115: 1505 1975.
B. F. Tack, J. Janatova, M. L. Thomas, R. A. Harrison, and C. H. Hammer, The third, fourth and fifth components of human complement: isolation and biochemical properties, in: “Methods in Enzymology, Proteolytic Enzymes,” L. Lorand, ed., Academic Press, New York (1981).
D. T. Fearon and K. F. Austen, Inhibition of complement-derived enzymes, Ann. New York Acad. Sci. 256: 441 1975.
J. A. Winkelstein, H. S. Shin, and W. B. Wood, Jr., Heat labile opsonins to pneumococcus. III. Participation of immunoglobulin and alternative pathway of C3 activation, J. Immunol. 108: 1681 (1972).
M. S. Edwards, A. Nicholson-Weller, C. J. Baker, and D. L. Kasper, The role of specific antibody in alternative complement pathway-mediated opsonophagocytosis of type III group B streptococcus, J. exp. Med. 151: 1275 1980.
H. A. Verbrugh, P. K. Peterson, B.-Y. T. Nguyen, S. S. Sisson, and Y. Kim, Opsonization of encapsulated staphylococcus aureus: the role of specific antibody and complement, J. Immunol. 129: 1681 1982.
S. Suter, U. E. Nydegger, L. Roux and F. A. Waldvogel, Cleavage of C3 by neutral proteases from granulocytes in pleural empyema, J. infect. Dis. 144: 499 1981.
C. P. Dorn, M. Zimmerman, S. S. Yang, E. C. Yurewicz, B. M. Ashe, R. Frankshun, H. Jones, Proteinase inhibitors. I. Inhibitors of elastase. J. Med. Chem. 20: 1464 1977.
J. C. Powers, B. F. Gupton, A. D. Harley, N. Nishino, R. J. Whitley, Specificity of porcine pancreatic elastase, human leukocyte elastase and cathepsin G: inhibition with peptide chloromethyl ketones. Biochim. Biophys. Acta 485: 156 1977.
F. A. Waldvogel, P. Vaudaux, P. D. Lew, A. Zwahlen, and U. E. Nydegger, Deficient phagocytosis secondary to breakdown of opsonic factors in infected exudates, in: “Biochemistry and Function of Phagocytes,” F. Rossi, P. Patriarca, eds., Plenum Publishing Corp., New York (1982).
J. R. Carlo, J. K. Spitznagel, E. J. Studer, D. H. Conrad, and S. Ruddy, Cleavage of membrane bound C3bi, an intermediate of the third component of complement, to C3c and C3d-like fragments by crude leukocyte lysosomal lysates and purified leukocyte elastase, Immunology 44: 381 1981.
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© 1984 Plenum Press, New York
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Nydegger, U.E., Suter, S. (1984). Pathophysiology of the Interaction between Complement and Non-Complement Proteases. In: Hörl, W.H., Heidland, A. (eds) Proteases. Advances in Experimental Medicine and Biology, vol 167. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9355-3_18
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DOI: https://doi.org/10.1007/978-1-4615-9355-3_18
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