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Introduction: The pathophysiology of cerebral ischemia is essential for early diagnosis, neurologic recovery, the early onset of drug treatment and the prognosis of ischemic events. Experimental models of cerebral ischemiac an be used to evaluate the cellular response phenomena and possible neurological protection by drugs.

Objective: To characterize the cellular changes in the neuronal population and astrocytic response by the effect of Dimethyl Sulfoxide (DMSO) on a model of ischemia caused by cerebral embolism.

Methods: Twenty Wistar rats were divided into four groups (n= 5). The infarct was induced with α-bovinethrombin (40 NIH/U). The treated group received 90 mg (100 µL) of DMSO in saline (1:1 v/v) intraperitoneally for 5 days; ischemic controls received only NaCl (placebo) and two non-ischemic groups (simulated) received NaCl and DMSO respectively. We evaluated the neuronal (anti-NeuN) and astrocytic immune-reactivity (anti-GFAP). The results were analyzed by densitometry (NIH Image J-Fiji 1.45 software) and analysis of variance (ANOVA) with the Graph pad software (Prism 5).

Results: Cerebral embolism induced reproducible and reliable lesions in the cortex and hippocampus (CA1). similar to those of focal models. DMSO did not reverse the loss of post-ischemia neuronal immune-reactivity, but prevented the morphological damage of neurons, and significantly reduced astrocytic hyperactivity in thesomato-sensory cortex and CA1 (P <0.001).

Conclusions: The regulatory effect of DMSO on astrocyte hyperreactivity and neuronal-astroglial cytoarchitecture, gives it potential neuroprotective properties for the treatment of thromboembolic cerebral ischemiain the acute phase.

Catalina Lapuente, Universidad del Tolima

Investigador Asociado. Grupo de Investigación en Enfermedades Neurodegenerativas. Auxiliar de Investigación, Departamento de Sanidad Animal -  Facultad de Medicina Veterinaria y Zootecnia – Universidad del Tolima.

Carlos A Rengifo, Universidad del Tolima

Docente Investigador del Grupo de Investigación en Enfermedades Neurodegenerativas. Patólogo del Departamento de Sanidad Animal -  Facultad de Medicina Veterinaria y Zootecnia – Universidad del Tolima.


Marco F Ávila, Universidad del Tolima

Estudiante de Doctorado. Grupo Terapia Celular y Molecular. Universidad Javeriana. Coinvestigador Grupo de Investigación en Enfermedades Neurodegenerativas. Departamento de Biología – Facultad de Ciencias – Universidad del Tolima.

Angel E Céspedes, Universidad del Tolima

Profesor investigador principal. Líder del Grupo de Investigación en Enfermedades Neurodegenerativas. Departamento de Sanidad Animal -  Facultad de Medicina Veterinaria y Zootecnia – Universidad del Tolima.

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Lapuente, C., Rengifo, C. A., Ávila, M. F., & Céspedes, A. E. (2024). Regulatory effect of Dimethyl Sulfoxide (DMSO) on astrocytic reactivity in a murine model of cerebral infarction by arterial embolization. Colombia Medica, 44(1), 31–36.


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Received 2012-06-27
Accepted 2013-02-18
Published 2024-06-26