Abstract
Treatment of enterohemorrhagic Escherichia coli–induced hemolytic uremic syndrome (eHUS) still mostly relies on supportive intensive
care regimens. Antibiotic treatment, as administered to eHUS patients during the 2011
O104:H4 outbreak, may reduce the shedding period, but this may apply only to this
particular strain. In any case, there is no evidence for a beneficial use in the diarrheal
phase and earlier warnings that antibiotic therapy at this stage may actually increase
the likelihood of HUS remain unrefuted. Plasma exchange, a frequently chosen therapy
in acute atypical HUS, was not beneficial for the outbreak patients and a prospective
study of 274 pediatric eHUS patients even indicates a poorer long-term outcome. As
eHUS is a disease where complement plays a pathophysiological role and individual
beneficial treatments had been published, eculizumab was broadly administered during
the outbreak, in particular to severely ill patients. The equally good outcome of
treated versus untreated patients obviously does not allow a clear-cut statement,
but rather points toward an advantageous use, at least for the severe cases. Although
the role of complement should not be overestimated, the use of a complement blocker—not
necessarily being a therapeutic option for uncomplicated eHUS—in severe disease may
actually make the difference between favorable or detrimental outcome.
Keywords
hemolytic uremic syndrome - enterohemorrhagic
Escherichia coli
- complement - Shiga toxin