Pulmonary and hematological inflammatory responses to intravenous cellulose micro-particles in broilers

Poultry Science
W WangG F Erf

Abstract

When injected intravenously, cellulose micro-particles become lodged in pulmonary arterioles. The current study investigated the systemic and pulmonary inflammatory responses triggered by cellulose micro-particles at 3, 24, and 48 h postinjection in 6-wk-old broilers. Proportions and concentrations of circulating white blood cells were assessed in saline-injected (control group) and cellulose-injected (particle group) birds. Hematoxylin-eosin (HE)-stained cross-sections of the lungs were used to count the number of granuloma/lymphocyte aggregates, which is indicative of the severity of the inflammatory response to the trapped particles. The cellular components of the aggregates were identified by immunohistochemical staining of frozen cross sections of the lungs. Results showed that cellulose micro-particles trapped in the pulmonary vasculature initiated a dynamic, localized inflammatory response within the surrounding lung parenchyma. Monocytes and basophilic granulocytes closely surrounded the particles. CD4, CD8, TCR1, TCR2, and TCR3 subsets of T cells and B cells were present in the outer rim of the granuloma/lymphocyte aggregates. Circulating total white blood cell (WBC, leukocytes) concentrations were similar in both grou...Continue Reading

Citations

Feb 1, 2011·Journal of Pharmacological and Toxicological Methods·Robert F Wideman, Krishna R Hamal
Mar 31, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Robert F WidemanNicholas B Anthony
Nov 13, 2009·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Krishna R HamalGisela F Erf
Jun 3, 2021·Animals : an Open Access Journal From MDPI·Maria Chmurska-GąsowskaMagdalena Strus

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