Na(+)/H(+) exchange in mosquito Malpighian tubules.
Na(+)/H(+) exchange in mosquito Malpighian tubules.
复制标题
蚊子马尔皮基小管中的 Na( )/H( ) 交换。
DOI:
10.1152/ajpregu.2000.279.6.r1996
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Petzel,DH
中科院分区:
文献类型:
--
作者:
Petzel,DH
Fluid secretion and intracellular pH were measured in isolated mosquito Malpighian tubules to determine the presence of Na+/H+exchange. Rates of fluid secretion by individual Malpighian tubules in vitro were inhibited by 78% of control in the presence of 100 μM 5-(N-ethyl-n-isopropyl)-amiloride (EIPA), a specific inhibitor of Na+/H+exchange. Steady-state intracellular pH was measured microfluorometrically by using 2′,7′-bis(2-carboxyethyl)-5(6)-carboxyfluorescein in individual Malpighian tubules. Bathing the Malpighian tubules in 0 mM extracellular Na+or in the presence of 100 μM EIPA reduced the steady-state intracellular pH by 0.5 pH units. Stimulation of the Na+/H+exchanger by using the NH4Cl pulse technique resulted in a rate of recovery from the NH4Cl-induced acute acid load of 8.7 ± 1.0 × 10−3pH/s. The rates of recovery of intracellular pH after the acute acid load in the absence of extracellular Na+or in the presence of 100 μM EIPA were 0.7 ± 0.6 and −0.3 ± 0.3 × 10−3pH/s, respectively. These results indicate that mosquito Malpighian tubules possess a Na+/H+exchanger.
登录
查看更多内容
DOI:
10.1152/ajpregu.1998.274.6.r1526
发表时间:
1998
期刊:
The American journal of physiology
影响因子:
--
作者:
Brokl,OH;Martinez,CL;Shuprisha,A;Abbott,DE;Dantzler,WH
通讯作者:
Dantzler,WH
影响因子:
--
作者:
D. Petzel;M. M. Berg;K. Beyenbach
通讯作者:
K. Beyenbach
DOI:
10.1152/ajpgi.1995.269.1.g1
发表时间:
1995
期刊:
The American journal of physiology
影响因子:
--
作者:
Yun,CH;Tse,CM;Nath,SK;Levine,SA;Brant,SR;Donowitz,M
通讯作者:
Donowitz,M
影响因子:
--
作者:
BOYARSKY, G;GANZ, MB;BORON, WF
通讯作者:
BORON, WF
影响因子:
2.8
作者:
Julian A. T. Dow;S. Maddrell;Andreas Görtz;N. J. Skaer;Scott Brogan;Kim Kaiser
通讯作者:
Kim Kaiser