Septicemia without sepsis: inherited disorders of nuclear factor-kappa B-mediated inflammation.
Septicemia is a life-threatening condition that may lead to sepsis and even septic shock. This cascade is usually accompanied by a pronounced inflammatory response, leading to high body temperature and elevated levels of laboratory markers of inflammation. However, this response can be significantly diminished in children with inherited disorders of nuclear factor (NF)-kappa B-mediated immunity. Three disease-causing genes involved in NF-kappa B activation have been identified: NEMO, IKBA, and IRAK4. Patients with anhidrotic ectodermal dysplasia and immunodeficiency, which is caused by mutations in NEMO and IKBA, have sparse hair, dry skin, and conical teeth and are at increased risk of severe infections caused by pyogenic bacteria and atypical mycobacteria. Patients with interleukin-1 receptor-associated kinase-4 deficiency are at increased risk of invasive disease due to pyogenic bacteria. An underlying defect in NF- kappa B activation should be suspected in children with bacterial septicemia accompanied by mild signs of inflammation.
von Bernuth
Horst
H
Laboratory of Human Genetics of Infectious Diseases, University of Paris Rene Descartes-INSERM U550, Necker Medical School, Paris, France.
Puel
Anne
A
Ku
Cheng-Lung
CL
Yang
Kun
K
Bustamante
Jacinta
J
Chang
Huey-Hsuan
HH
Picard
Capucine
C
Casanova
Jean-Laurent
JL
D004476:Ectodermal Dysplasia / Q000235:genetics*; D006801:Humans; D007249:Inflammation; D053592:Interleukin-1 Receptor-Associated Kinases / Q000172:deficiency / Q000378:metabolism; D016328:NF-kappa B / Q000235:genetics* / Q000276:immunology; D018805:Sepsis / Q000175:diagnosis; D018746:Systemic Inflammatory Response Syndrome / Q000175:diagnosis / Q000235:genetics* / Q000276:immunology
D016328:NF-kappa B; D053592:Interleukin-1 Receptor-Associated Kinases