Summary:
Methane-forming microbes of the phylogenetic domain Archaea are part of the strictly anaerobic microflora of the human intestine. In bone marrow transplant (BMT) recipients, the regimen of intestinal decontamination with metronidazole is targeted to anaerobic bacteria. The effect on the anaerobic methanoarchaea, however, is unknown. Therefore, the faeces of patients undergoing BMT were investigated for methane production. The anoxic Hungate technique and an archaeal growth medium were used to culture faecal specimens. Methane production was measured in the head space of the culture bottles by gas chromatography using a thermal conductivity detector. In a testing serial specimen of 100 patients, 13 patients were found to bear methanogens, and 11 of these patients received metronidazole. The methane-producing faecal specimens occurred before metronidazole use in three patients, during the first week in five patients, and after cessation in three patients. No specimen of the 11 patients that was obtained during the 2nd–5th week of gut decontamination showed methane production. It is concluded that use of metronidazole directed against faecal anaerobic bacteria also suppresses or eliminates faecal methanogenic Archaea.
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In Memoriam: Professor Dr K. Schaefer, Director of the Department of Bone Marrow Transplantation, University Hospital of Essen.
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Ansorg, R., Rath, PM., Runde, V. et al. Influence of intestinal decontamination using metronidazole on the detection of methanogenic Archaea in bone marrow transplant recipients. Bone Marrow Transplant 31, 117–119 (2003). https://doi.org/10.1038/sj.bmt.1703797
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DOI: https://doi.org/10.1038/sj.bmt.1703797
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