Different phosphate transport in the duodenum and jejunum of chicken response to dietary phosphate adaptation.
Different phosphate transport in the duodenum and jejunum of chicken response to dietary phosphate adaptation.
复制标题
鸡十二指肠和空肠中不同磷酸盐转运对日粮磷酸盐适应的反应
DOI:
10.5713/ajas.2012.12187
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发表时间:
2012-10
期刊:
影响因子:
--
通讯作者:
He J
中科院分区:
文献类型:
--
作者:
Fang R;Xiang Z;Cao M;He J
Intestinal phosphate (Pi) absorption across the apical membrane of small intestinal epithelial cells is mainly mediated by the type IIb Na-coupled phosphate co-transporter (NaPi-IIb), but its expression and regulation in the chicken remain unclear. In the present study, we investigated the mRNA and protein levels of NaPi-IIb in three regions of chicken small intestine, and related their expression levels to the rate of net phosphate absorption. Our results showed that maximal phosphate absorption occurs in the jejunum, however the highest expression levels of NaPi-IIb mRNA and protein occurs in the duodenum. In response to a low-Pi diet (TP 0.2%), there is an adaptive response restricted to the duodenum, with increased brush border membrane (BBM) Na-Pi transport activity and NaPi-IIb protein and mRNA abundance. However, when switched from a low- (TP 0.2%) to a normal diet (TP 0.6%) for 4 h, there is an increase in BBM NaPi-IIb protein abundance in the jejunum, but no changes in BBM NaPi-IIb mRNA. Therefore, our study indicates that Na-Pi transport activity and NaPi-IIb protein expression are differentially regulated in the duodenum vs the jejunum in the chicken.
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DOI:
10.1152/ajpgi.1999.277.4.g756
发表时间:
1999-10-01
影响因子:
4.5
作者:
Hattenhauer, O;Traebert, M;Biber, J
通讯作者:
Biber, J
影响因子:
--
作者:
BOROWITZ, SM;GRANRUD, GS
通讯作者:
GRANRUD, GS
DOI:
10.3181/00379727-205-43692
发表时间:
1994-02-01
影响因子:
--
作者:
NAKAGAWA, N;GHISHAN, FK
通讯作者:
GHISHAN, FK
影响因子:
5.5
作者:
Xu, H;Bai, LQ;Ghishan, FK
通讯作者:
Ghishan, FK
影响因子:
29.4
作者:
GHISHAN, FK;ARAB, N;SHIBATA, H
通讯作者:
SHIBATA, H