A comparative study of ammonia transport across ruminal epithelia from Bos indicus crossbreds versus Bos taurus.
A comparative study of ammonia transport across ruminal epithelia from Bos indicus crossbreds versus Bos taurus.
复制标题
印度牛与金牛杂交瘤胃上皮氨转运的比较研究
DOI:
10.1111/asj.13107
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Stumpff
中科院分区:
文献类型:
--
作者:
Rabbani;Akhtar;Rosendahl;Grunau;Tietjen;Masood;Kaessmeyer;Gunzel;Rehman;Stumpff
Absorption of ammonia from the rumen of cattle decreases nitrogen availability for fermentational protein synthesis, leading to increased competition of cattle with humans for protein and enhancing the release of toxic nitrogenous compounds into the environment. Given that differences in feeding and breeding might induce differences in ruminal ammonia transport, we compared electrophysiological, histological, and molecular biological characteristics of ruminal epithelia ofBos indicuscrossbreds (Sahiwal‐Mix, SWM) with those ofBos taurus(Holstein‐Friesian, HF). As in HF, the stratified cornified epithelium of SWM expressed claudin 1 and 4. Measurements of ammonia flux (HF) and serosal pH (both breeds) suggested that at a mucosal pH of 6.4, net transport primarily occurred as NH4+. As shown previously for HF, NH4+induced a concentration‐dependent rise in short circuit current (Isc) in SWM that could be further stimulated by the TRP channel agonist menthol. Relative mRNA expression levels for TRPV3, TRPV4, TRPM6, and TRPM7 were significantly lower in SWM than in HF, with TRPA1 expression near the limit of detection. We conclude that uptake of ammonia from the rumen of both breeds occurs electrogenically as NH4+with functional and molecular biological evidence pointing towards involvement of TRPV3 and TRPV4.
登录
查看更多内容
影响因子:
0.6
作者:
D. Hennessy;P. Williamson;R. Darnell
通讯作者:
R. Darnell
影响因子:
3.2
作者:
M. Schweigel;Martin Kolisek;Z. Nikolić;J. Kuzinski
通讯作者:
J. Kuzinski
DOI:
10.1152/ajpgi.00275.2004
发表时间:
2005
期刊:
American journal of physiology. Gastrointestinal and liver physiology
影响因子:
--
作者:
S. Leonhard;F. Stumpff;I. Brinkmann;G. Breves;H. Martens
通讯作者:
H. Martens
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Belay Mulate;S. Nazir
通讯作者:
S. Nazir
DOI:
10.1016/0300-9629(96)00012-6
发表时间:
1996-08-01
期刊:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-PHYSIOLOGY
影响因子:
--
作者:
Bodeker, D;Kemkowski, J
通讯作者:
Kemkowski, J