Neuroparasitology and Tropical Neurology: Chapter 18. Neurological manifestations of filarial infections

Neuroparasitology and Tropical Neurology: Chapter 18. Neurological manifestations of filarial infections
ISBN-10
0128079622
ISBN-13
9780128079621
Series
Neuroparasitology and Tropical Neurology
Category
Medical
Pages
432
Language
English
Published
2013-07-03
Publisher
Elsevier Inc. Chapters
Authors
Pierre-Marie Preux, Michel Dumas, Devender Bhalla

Description

Filarial infections cause a huge public health burden wherever they are endemic. These filaria may locate anywhere in the human body. Their manifestations and pathogenic mechanisms, except the most common ones, are rarely investigated systematically. Their neurological manifestations, however, are being increasingly recognized particularly with onchocerciasis or Loa loa infections, Wuchereria bancrofti, or Mansonella perstans. The risk of developing these manifestations may also increase in cases that harbor multiple filariasis or coinfections, for instance as with Plasmodium. The microfilaria of Onchocerca and Loa loa are seen in cerebrospinal fluid. The pathogenesis of neurological manifestations of these infections is complex; however, pathogenic reactions may be caused by mechanical disruption, e.g., degeneration often followed by granulomas, causing fibrosis or mass effects on other tissues, vascular lesions, e.g., vascular block of cerebral vessels, or disordered inflammatory responses resulting in meningitis, encephalitis or localized inflammatory responses. The chances of having neurological manifestations may also depend upon the frequency and“heaviness”of infection over a lifetime. Hence, this type of infection should no longer be considered a disease of the commonly affected areas but one that may produce systemic effects or other manifestations, and these should be considered in populations where they are endemic.

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