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Microbial Ecology in Health and Disease Volume 1, 1988 - Issue 1
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Original Article

Faecal tryptic activity in humans: Influence of antibiotics on microbial intestinal degradation

K. E. Norin Department of Medical Microbial Ecology, Karolinska Institute, Box 60 400, 10401, Stockholm, Sweden
,
B. Carlstedt-duke Department of Medical Microbial Ecology, Karolinska Institute, Box 60 400, 10401, Stockholm, Sweden
,
T. Höverstad Department of Medicin A, National Hospital, Oslo, Norway
,
E. Lingaas Department of Kaptein Wilhelmsen og Frues Bacteriological Institute, National Hospital, Oslo, Norway
,
H. Saxerholt Department of Medical Microbial Ecology, Karolinska Institute, Box 60 400, 10401, Stockholm, Sweden
,
M. Steinbakk Department of Kaptein Wilhelmsen og Frues Bacteriological Institute, National Hospital, Oslo, Norway
&
T. Midtvedt Department of Medical Microbial Ecology, Karolinska Institute, Box 60 400, 10401, Stockholm, Sweden
 show all
Pages 65-68 | Received 07 Sep 1987, Published online: 11 Jul 2009
 

Abstract

Soluble faecal tryptic activity (FTA) was determined in healthy adults using a spectrophotometric method. Mean FTA was 100 mg/kg faeces (range 0-980), inter-individual variations were more pronounced than the intra-individual ones. Ten different antimicrobial drugs given orally for six days caused alterations in some individual FTA levels.

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