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Mycoplasma Pneumoniae Infection Associated With Central Nervous System Complications

Izaak Walton Killam Hospital, Dalhousie University

Robert Bortolussi, MD

Izaak Walton Killam Hospital, Dalhousie University

Kevin Gordon, MD, MSc

Izaak Walton Killam Hospital, Dalhousie University

Spencer H. S. Lee, PhD

Dalhousie University, Victoria General Hospital Halifax, Nova Scotia

John G. Gatien, MD

Izaak Walton Killam Hospital, Dalhousie University

M.S. Shahdrabadi, DVM, PhD

Foothills Provincial Hospital Calgary, Alberta, Canada

We describe two children who had central nervous system complications, encephalitis and meningoencephalitis, temporally associated with Mycoplasma pneumoniae. M pneumoniae was identified as the cause of the illnesses on the basis of at least a fourfold increase in complement fixation antibody titers. Despite extensive viral and bacterial investigation, no evidence of any other pathogen was found.

Two strategies were used to determine whether M pneumoniae was directly invasive: (1) by examining cerebrospinal fluid using a M pneumoniae- specific DNA probe and (2) by determining whether complement-fixating antibody to M pneumoniae was produced locally through comparison of the cerebrospinal fluid/serum ratio of M pneumoniae antibody to the cerebrospinal fluid/serum ratio of immunoglobulin M. Both assessments were negative. M pneumoniae did not appear to directly invade the central nervous system in these two patients. We conclude that the direct invasion of the cerebrospinal fluid is not necessary in the pathogenesis of M pneumoniae-induced neurologic disease. (J Child Neurol 1993;8:27-31).

Journal of Child Neurology, Vol. 8, No. 1, 27-31 (1993)
DOI: 10.1177/088307389300800104


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