Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats
The effect of an 8 hour-period of water deprivation on fluid and electrolyte renal excretion was investigated in male Wistar rats infected with the strain São Felipe (12SF) of Trypanosoma cruzi, in comparison with age and sex matched non-infected controls. The median percent reductions in the urinar...
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Sociedade Brasileira de Medicina Tropical (SBMT)
1995-03-01
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doaj-45b876ed343443aa8cc54b607daaeb4e2020-11-24T22:53:37ZengSociedade Brasileira de Medicina Tropical (SBMT)Revista da Sociedade Brasileira de Medicina Tropical0037-86821678-98491995-03-01281711Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected ratsT.T. RosaL.F. Junqueira JuniorF.J.C. MangiaJ.P.R. VeigaF.V. PáduaThe effect of an 8 hour-period of water deprivation on fluid and electrolyte renal excretion was investigated in male Wistar rats infected with the strain São Felipe (12SF) of Trypanosoma cruzi, in comparison with age and sex matched non-infected controls. The median percent reductions in the urinary flow (-40% v -63%) and excretion ofsodium (-57% v-79%) were smaller in chagasic than in control rats, respectively. So, chagasic rats excreted more than controls. On the other hand, the median percent decrement in the clearance of creatinine was higher in chagasic (-51%) than in controls (-39%). Thus, chagasic rats showed some disturbed renal hydroelectrolytic responses to water deprivation, expressed by smaller conservation, or higher excretion of water and sodium in association with smaller glomerularfiltration rate. This fact denoted an elevation in the fractional excretion of sodium and water.<br>O efeito de 8 horas do jejum hídrico sobre a excreção renal de sódio e água foi investigado em ratos Wistar machos infectados com a cepa São Felipe (12SF) do T. cruzi e comparados com ratos controles, de mesma idade e sexo. Durante a hidropenia, a mediana da redução no fluxo urinário (-40% v -63%) e a excreção urinária de sódio (-57% v -79%) foram menores nos chagásicos do que nos controles, respectivamente. Assim os ratos chagásicos excretaram mais do que os controles. Por outro lado, a mediana do decréscimo percentual na depuração de creaünina foi maior nos chagásicos (-51%) do que nos controles' (-39%,). Portanto, os ratos chagásicos mostraram alteração na resposta excretória hidroeletrolítica renal expressa por menor conservação de água e sódio em associação à menor taxa de filtração.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821995000100002HidropeniaFluxo urinárioSódio e potássio urináriosTaxa de filtração glomerularInfecção murina por T. cruziWater deprivationUrinary flowUrinary sodium and potassiumGlomerular filtration rateT. cruzi-infected rat |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T.T. Rosa L.F. Junqueira Junior F.J.C. Mangia J.P.R. Veiga F.V. Pádua |
spellingShingle |
T.T. Rosa L.F. Junqueira Junior F.J.C. Mangia J.P.R. Veiga F.V. Pádua Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats Revista da Sociedade Brasileira de Medicina Tropical Hidropenia Fluxo urinário Sódio e potássio urinários Taxa de filtração glomerular Infecção murina por T. cruzi Water deprivation Urinary flow Urinary sodium and potassium Glomerular filtration rate T. cruzi-infected rat |
author_facet |
T.T. Rosa L.F. Junqueira Junior F.J.C. Mangia J.P.R. Veiga F.V. Pádua |
author_sort |
T.T. Rosa |
title |
Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats |
title_short |
Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats |
title_full |
Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats |
title_fullStr |
Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats |
title_full_unstemmed |
Effects of water deprivation on renal hydroelectrolytic excretion in chronically Trypanosoma cruzi-infected rats |
title_sort |
effects of water deprivation on renal hydroelectrolytic excretion in chronically trypanosoma cruzi-infected rats |
publisher |
Sociedade Brasileira de Medicina Tropical (SBMT) |
series |
Revista da Sociedade Brasileira de Medicina Tropical |
issn |
0037-8682 1678-9849 |
publishDate |
1995-03-01 |
description |
The effect of an 8 hour-period of water deprivation on fluid and electrolyte renal excretion was investigated in male Wistar rats infected with the strain São Felipe (12SF) of Trypanosoma cruzi, in comparison with age and sex matched non-infected controls. The median percent reductions in the urinary flow (-40% v -63%) and excretion ofsodium (-57% v-79%) were smaller in chagasic than in control rats, respectively. So, chagasic rats excreted more than controls. On the other hand, the median percent decrement in the clearance of creatinine was higher in chagasic (-51%) than in controls (-39%). Thus, chagasic rats showed some disturbed renal hydroelectrolytic responses to water deprivation, expressed by smaller conservation, or higher excretion of water and sodium in association with smaller glomerularfiltration rate. This fact denoted an elevation in the fractional excretion of sodium and water.<br>O efeito de 8 horas do jejum hídrico sobre a excreção renal de sódio e água foi investigado em ratos Wistar machos infectados com a cepa São Felipe (12SF) do T. cruzi e comparados com ratos controles, de mesma idade e sexo. Durante a hidropenia, a mediana da redução no fluxo urinário (-40% v -63%) e a excreção urinária de sódio (-57% v -79%) foram menores nos chagásicos do que nos controles, respectivamente. Assim os ratos chagásicos excretaram mais do que os controles. Por outro lado, a mediana do decréscimo percentual na depuração de creaünina foi maior nos chagásicos (-51%) do que nos controles' (-39%,). Portanto, os ratos chagásicos mostraram alteração na resposta excretória hidroeletrolítica renal expressa por menor conservação de água e sódio em associação à menor taxa de filtração. |
topic |
Hidropenia Fluxo urinário Sódio e potássio urinários Taxa de filtração glomerular Infecção murina por T. cruzi Water deprivation Urinary flow Urinary sodium and potassium Glomerular filtration rate T. cruzi-infected rat |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821995000100002 |
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