Effects of Genistein and Re 31-8220 on Inflammation in Guinea-Pig Macrophages
Author Information
Author(s): K. Pollock, M. T. Withnall
Primary Institution: Rhône-Poulenc Rorer Ltd, Dagenham Research Centre
Hypothesis
The study investigates the roles of protein tyrosine kinase (PTK) and protein kinase C (PKC) in the generation of inflammatory mediators by alveolar macrophages.
Conclusion
PTK activation is essential for generating superoxide and thromboxane B2 in response to FMLP in guinea-pig alveolar macrophages, while PKC is required for LPS priming.
Supporting Evidence
- Genistein inhibited FMLP-induced superoxide generation in non-primed alveolar macrophages.
- Re 31-8220 inhibited PMA-induced superoxide generation but had little effect on FMLP responses.
- PTK activation is required for the generation of inflammatory mediators by FMLP in alveolar macrophages.
Takeaway
This study shows that a specific enzyme helps cells respond to inflammation, while another enzyme helps prepare the cells for a stronger response later.
Methodology
The study used guinea-pig alveolar macrophages to assess the effects of genistein and Re 31-8220 on superoxide and TXB2 generation in response to FMLP and PMA.
Participant Demographics
Male Dunkin-Hartley guinea-pigs were used in the study.
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