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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Main Authors: T.T. Rosa, L.F. Junqueira Junior, F.J.C. Mangia, J.P.R. Veiga, F.V. Pádua
Format: Article
Language:English
Published: Sociedade Brasileira de Medicina Tropical (SBMT) 1995-03-01
Series:Revista da Sociedade Brasileira de Medicina Tropical
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821995000100002
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spelling 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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