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Cited by 296

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

Superoxide radical production in chicken skeletal muscle induced by acute heat stress

Open access
Mujahid, A., Yoshiki, Y., Akiba, Y., Toyomizu, M.·2005·Poultry Science
DOI 10.1093/ps/84.2.307
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Abstract

Heat stress is of major concern for poultry, especially in the hot regions of the world because of the resulting poor growth performance, immunosuppression, and high mortality. To assess superoxide (O2*-) production in mitochondria isolated from skeletal muscle of chickens (n = 4 to 8) exposed to acute heat stress, electron spin resonance (ESR) spectroscopy using 5,5-dimethyl-1-pyrroline N-oxide (DMPO) as a spin trap agent and lucigenin-derived chemiluminescence (LDCL) method were applied. ESR spectra of suspensions containing mitochondria from control and acute heat-treated meat-type chickens showed similar hyperfine coupling constants (aN = 1.44 mT, aHbeta = 0.12 mT, and aHbeta = 0.11 mT) to those of DMPO-O2*- adducts observed in a hypoxanthine-xanthine oxidase system. Heat exposure resulted in enhancement of the DMPO-O2*- signal. The results using LDCL showed significantly enhanced superoxide production in heat stress-treated skeletal muscle mitochondria of meat-type chickens, whereas no such increase was observed in laying chickens. The enhancement of superoxide production in the former case was associated with heat-induced increments in rectal and muscle temperatures, leading to significant body weight loss. In contrast, the latter case showed no increase in temperatures, although there was a slight decrease in body weight gain. Percentage increases of superoxide production in the presence of carboxyatractylate, a specific inhibitor of adenine nucleotide translocator (ANT), were the same for skeletal muscle mitochondria from meat- and laying-type chickens from the control or heat stress-treated group. This finding suggests the irrelevance of ANT in the regulation of reactive oxygen species flux under heat stress conditions. The study provides the first evidence of superoxide anion production in the skeletal muscle mitochondria of meat-type chickens in response to acute heat stress.

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Metadata

Authors
Mujahid, A., Yoshiki, Y., Akiba, Y., & Toyomizu, M.
Venue
Poultry Science
Publisher
Elsevier BV
Published
2005-02
Volume
84
Issue
2
Pages
307-314
ISSN
0032-5791 (ISSN-L)
DOI
10.1093/ps/84.2.307
OpenAlex
W2036649096
Cited by
296
References
35
FWCI
10.73
Type
journal article
Language
en
Open access
hybrid

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