Artículo de investigación científica recibido el 15/07/2010 y aprobado el 02/11/2010 1 Este artículo es producto del proyecto de investigación "Juegos serios para la enseñanza del pensamiento sistémico", adscrito al grupo de investigación I 3
-Tropical spastic paraparesis (TSP) may or may not be associated to HTLV-I antibodies and is usually characterized by clinical and pathological spinal cord abnormalities at thoracic levels. We present here five Brazilian patients who had typical chronic idiopatic spastic paraparesis; two of them were HTLV-I seropositive (HAM) and three HTLV-I seronegative (TSP) -associated-myelopathy. Three out of these five patients also displayed clinical supraspinal involvement, indeed, platysma muscle hypotrophy or atrophy (the Babinski plus sign). These findings support the view that clinical involvement in HAM and TSP is wider than the spinal cord abnormalities usually considered. Possible non-infectious co-factors (e.g., mycotoxins) may be involved in disease pathogenesis in a multistep process of viruses, toxins and environment which may account for serological differences found in this group of patients. KEY WORDS: HAM, TSP, Babinski plus sign, mycotoxins, neurorehabilitation.
dos signos de Babinski en pacientes con paraparesia espástica tropical seropositiva (HaM) y seronegativaResumen -La paraparesia espástica tropical (PET), puede o no estar asociada con anticuerpos contra el HTLV-I y se caracteriza, usualmente, por alteraciones clínicas y patológicas a nivel de region dorso-lumbar de la medula espinal. Presentamos cinco pacientes brasileros, quienes tuvieron hallazgos típicos de paraparesia espástica crónica idiopática; dos de ellos tuvieron (HAM) y tres no tuvieron (TSP) anticuerpos, en el suero, contra el HTLV-I. En tres pacientes se encontró hipotrofia o atrofia del músculo platisma (signo de Babinski plus), demostrando que el compromiso clínico en pacientes con HAM y TSP se extiende más allá de la médula espinal torácica. Cofactores (por ejemplo, micotoxinas) podrían estar involucrados en la patogénesis de esta enfermedad, en una interacción compleja de virus, toxinas y medio ambiente, lo cual explicaría las diferencias serológicas encontradas en este grupo de pacientes.PALABRAS CLAVES: HAM,TSP, signo de Babinski plus, neurorehabilitación.
Andrs Lpez has a M.Sc. in society of information from Universitat Oberta de Catalunya, a M.B.A. from Universidad Icesi, and a B.Sc. in business administration from Universidad Icesi. He is Director of the specialist degree in environmental management at Universidad Icesi. Mr. Andrs Caldern, Universidad Icesi Andrs Caldern is a specialist in the teaching of history at the Universidad del Valle. He is also a Historian at the Universidad del Valle, and a Adjunct Professor and Game Master of the Serious Games series at Universidad Icesi.
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