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CONICET Digital
Article . 2010
License: CC BY NC SA
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Characterization of Serum Complement Activity of Broad-Snouted Caiman (Caiman latirostris, Crocodylia: Alligatoridae)

Authors: Siroski, Pablo Ariel; Merchant, Mark; Parachu Marco, Maria Virginia; Piña, Carlos Ignacio; Ortega, Hugo Hector;

Characterization of Serum Complement Activity of Broad-Snouted Caiman (Caiman latirostris, Crocodylia: Alligatoridae)

Abstract

Characterization of the serum complement activity of the broad-snouted caiman Caiman latirostris (Crocodilia: Alligatoridae). Zoological Studies 49(1): 64-70. The sheep red blood cell (SRBC) hemolysis assay was used to detect and characterize complement-system activity of broad-snouted caiman (Caiman latirostris) serum. The hemolytic activity of caiman serum was inhibited by 2 classic inhibitors (EDTA and heat) suggesting the existence of complement-system activity. In addition, we found that the capacity of C. latirostris serum to disrupt SRBCs was concentration, temperature, and kinetics dependent. Hemolytic activity was detected from a very low concentration (< 10%) of caiman serum and increased until 100%. Temperature influenced the activity of the serum by disrupting SRBC membranes. The serum showed a peak of hemolysis between 30 and 40°C, within which lies the optimal temperature caimans prefer during thermoregulation for normal physiological processes. Hemolytic activity rapidly occurred at 2 min, and maximum activity was detected at 60 min. These observations reflect previously reported findings in other crocodilian species (Alligator mississippiensis, Crocodylus johnstoni, and Cro. porosus), thus adding to the knowledge of the role of the complement system in immunological activities of crocodilians.

Fil: Parachu Marco, Maria Virginia. Proyecto Yacaré; Argentina. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina

Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina. Proyecto Yacaré; Argentina

Fil: Ortega, Hugo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Ciencias Veterinarias del Litoral. Universidad Nacional del Litoral. Facultad de Ciencias Veterinarias. Instituto de Ciencias Veterinarias del Litoral; Argentina

Fil: Siroski, Pablo Ariel. Provincia de Santa Fe. Secretaría de Medio Ambiente; Argentina. Proyecto Yacaré; Argentina

Fil: Merchant, Mark. McNeese State University; Estados Unidos

Country
Argentina
Keywords

ECTOTHERMICS, HEMOLYTIC ASSAY, https://purl.org/becyt/ford/1.6, https://purl.org/becyt/ford/1, CROCODILIANS, IMMUNOLOGY

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green