Effects of Exposure to Dietary Chromium on Tissue Mineral Contents in Rats Fed Diets with Fiber

Abstract

This study evaluated the effects of diets with fiber (cellulose and/or pectin) supplemented with chromium(III) on homeostasis of selected minerals in femurs, thigh muscles, livers, and kidneys of rats. For 6 weeks, male rats were fed experimental diets: a fiber-free diet (FF), a diet containing 5 % cellulose (CEL), 5 % pectin (PEC), or 2.5 % cellulose and 2.5 % pectin (CEL + PEC). These diets had 2.53 or 0.164 mg Cr/kg diet. The tissue levels of Ca, Mg, Zn, Fe, and Cr were determined by using atomic absorption spectrometry. Supplementing diets with Cr resulted in significantly higher Cr levels in the femurs of rats fed the CEL diet and significantly higher Cr and Fe levels in the rats fed the CEL + PEC diet compared to the rats fed FF diet. Muscle Ca content was significantly lower in the rats fed the CEL + PEC + Cr diet compared to the rats fed FF + Cr diet. The rats consuming the PEC + Cr diet had the highest liver Cr content. The highest kidney Zn content was observed in the rats fed diets containing Cr and one type of fiber. These results indicate that diets containing chromium at elevated dose and fiber have a significant effect on the mineral balance in rat tissues.

Effects of chromium-enriched bacillus subtilis KT260179 supplementation on chicken growth performance, plasma lipid parameters, tissue chromium levels, cecal bacterial composition and breast meat quality

“…Previous studies have reported that Cr supplementation can increase the Cr content of tissues, although the results varied [26, 27]. In our study, the Cr contents of breast meat and blood were very significantly increased with the inorganic and CEBS supplemented.…”

SEBS colonized in ileal mucosa, optimized bacterial composition, improved Se level and activated TLR2－NF-kB1 signaling pathway to regulate β-defensin 1 expression

“…SEBS, due to the effects of B. subtilis and Se, exerted a more robust effect. Previous studies have reported that Se supplementation can increase Se tissue content, although the results varied [58]. In our study, the Se contents in the plasma and liver increased signi cantly in the IS and SEBS groups, which indicated that the dietary supplement containing Se exerted a signi cant in uence on the Se level; this is in accordance with previous reports [37,57].…”

Effects of chromium-enriched Bacillus subtilis KT260179 supplementation on growth performance, caecal microbiology, tissue chromium level, insulin receptor expression and plasma biochemical profile of mice under heat stress

“…Previous studies have reported that Cr supplementation can increase the Cr content of tissues, although the results are varied (37)(38)(39)(40) . In our study, the Cr contents of the heart, liver, spleen, kidney and skeletal muscles were significantly increased with the addition of Cr in the inorganic form and as CEBS.…”