Denisse E. Chacón Zuñiga
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Denisse E. Chacón Zuñiga has a total of 18 co-authors. Here are the top co-authors by number of shared publications:
- Liza N. Nuñez Del Prado Murillo
Epilepsy Department Instituto Nacional de Ciencias Neurológicas Lima Perú
2 shared publications - Sofia Stefanie Sanchez Boluarte
Epilepsy Department Instituto Nacional de Ciencias Neurológicas Lima Perú
2 shared publications - Andrea Rivera- Valdivia
Instituto Nacional de Ciencias Neurológicas, Centro de Investigación Básica en Neurogenética. Lima, Perú. / Universidad Científica del Sur, Neurogenetics Working Group. Lima, Perú
1 shared publication - Betsabé Callupe‐Luna
Faculty of Medicine Universidad Peruana Cayetano Heredia Lima Peru
1 shared publication - Carlos M. Vásquez Perez
Neurosurgery Department Instituto Nacional de Ciencias Neurológicas Lima Perú
1 shared publication - Celia Jara-Velásquez
Instituto Nacional de Ciencias Neurológicas, Centro de Investigación Básica en Neurogenética. Lima, Perú
1 shared publication
Latest Publications
Interictal epileptiform discharges in calcified neurocysticercosis–associated epilepsy: An exploratory study
The objective of the study was to assess the frequency of interictal epileptiform discharges (IEDs) in calcified neurocysticercosis (NCC) and its relationship with calcification burden. Forty‐nine patients with calcified NCC (low‐burden, 1–2 calcifications, n = 24; high‐burden, ≥15 calcifications, n = 25) and seizure history underwent prolonged (8‐h) electroencephalography (EEG), interpreted by epileptologists who were blinded to patient history and calcification category. Clinical seizure outcomes were also assessed. We found that IEDs occurred in 7 of 49 participants (14.3%), with no difference between low‐burden (12.5%) and high‐burden (16.0%) groups ( p = 1.000). All IEDs (spikes and/or sharp waves) in the high‐burden group ( n = 4) were high‐voltage (100–150 μV), whereas those in the low‐burden group ( n = 3) were low or medium voltage (20–70 μV). Among the participants who had IEDs, 5 (71.4%) had seizures in the last year, compared with 14 (33.3%) in the group without IEDs detected ( p = 0.093). Among 19 participants with seizures in the last year, 5 were identified as having drug‐resistant epilepsy (DRE). All five cases of DRE occurred in individuals with 15 or more calcifications (5/25, 20%, vs 0/24, p = 0.023). We conclude that IEDs occur frequently in individuals with calcified NCC. Although calcification burden itself was not associated with the presence of IEDs, drug‐resistant cases and high‐voltage IEDs were concentrated in the high‐burden group, supporting the role of calcified parasites as epileptogenic foci.
Interictal epileptiform discharges in calcified neurocysticercosis–associated epilepsy: An exploratory study
The objective of the study was to assess the frequency of interictal epileptiform discharges (IEDs) in calcified neurocysticercosis (NCC) and its relationship with calcification burden. Forty‐nine patients with calcified NCC (low‐burden, 1–2 calcifications, n = 24; high‐burden, ≥15 calcifications, n = 25) and seizure history underwent prolonged (8‐h) electroencephalography (EEG), interpreted by epileptologists who were blinded to patient history and calcification category. Clinical seizure outcomes were also assessed. We found that IEDs occurred in 7 of 49 participants (14.3%), with no difference between low‐burden (12.5%) and high‐burden (16.0%) groups ( p = 1.000). All IEDs (spikes and/or sharp waves) in the high‐burden group ( n = 4) were high‐voltage (100–150 μV), whereas those in the low‐burden group ( n = 3) were low or medium voltage (20–70 μV). Among the participants who had IEDs, 5 (71.4%) had seizures in the last year, compared with 14 (33.3%) in the group without IEDs detected ( p = 0.093). Among 19 participants with seizures in the last year, 5 were identified as having drug‐resistant epilepsy (DRE). All five cases of DRE occurred in individuals with 15 or more calcifications (5/25, 20%, vs 0/24, p = 0.023). We conclude that IEDs occur frequently in individuals with calcified NCC. Although calcification burden itself was not associated with the presence of IEDs, drug‐resistant cases and high‐voltage IEDs were concentrated in the high‐burden group, supporting the role of calcified parasites as epileptogenic foci.
- Open Access
- 18 December 2025
- Published by Universidad Peruana Cayetano Heredia in Revista de Neuro-Psiquiatría
- Vol. 88 (4) , 420-429
Compromiso del sistema nervioso central en la distrofia miotónica tipo 1: reporte de tres casos
La distrofia miotónica tipo 1 (DM1) es una enfermedad neuromuscular hereditaria autosómica dominante de carácter sistémico, caracterizada por debilidad muscular progresiva, miotonía y cataratas. Además, puede comprometer los sistemas cardiovascular, endocrino y nervioso central. En este reporte presentamos tres casos de DM1 con afectación significativa del sistema nervioso central, evidenciada por alteraciones estructurales en imágenes de resonancia magnética cerebral, deterioro cognitivo, epilepsia y cambios conductuales. Se destaca la importancia de una evaluación multidisciplinaria que integre valoraciones neuropsiquiátricas y estudios de neuroimagen como parte esencial del manejo integral de esta afección.
- 18 December 2025
- Published by Universidad Peruana Cayetano Heredia in Revista de Neuro-Psiquiatría
- Vol. 88 (4) , 420-429
Open AccessCompromiso del sistema nervioso central en la distrofia miotónica tipo 1: reporte de tres casos
La distrofia miotónica tipo 1 (DM1) es una enfermedad neuromuscular hereditaria autosómica dominante de carácter sistémico, caracterizada por debilidad muscular progresiva, miotonía y cataratas. Además, puede comprometer los sistemas cardiovascular, endocrino y nervioso central. En este reporte presentamos tres casos de DM1 con afectación significativa del sistema nervioso central, evidenciada por alteraciones estructurales en imágenes de resonancia magnética cerebral, deterioro cognitivo, epilepsia y cambios conductuales. Se destaca la importancia de una evaluación multidisciplinaria que integre valoraciones neuropsiquiátricas y estudios de neuroimagen como parte esencial del manejo integral de esta afección.
- Open Access
- 12 July 2023
- Published by Wiley in Epilepsia Open
- Vol. 8 (3) , 1175-1181
Postsurgical outcomes in a cohort of patients with hippocampal sclerosis: Initial experience in a referral epilepsy center in Peru
Mesial temporal lobe epilepsy, one of the most common forms of epilepsy, is often linked with drug resistance. Surgical intervention is a reliable and safe treatment option, though research into postsurgical outcomes in our locality remains limited. We performed a retrospective observational study included 91 patients with mesial temporal lobe epilepsy and hippocampal sclerosis who had undergone anterior temporal lobectomy between 2012 and 2020 at a surgical epilepsy center located in Lima, Peru. Postoperative outcomes were analyzed using bivariate and multivariate analysis based on the Engel classification. We found that after 12 months of follow‐up, 78.65% of the 91 patients achieved an Engel IA classification, while 9.09% attained Engel IB classification and 11.24% were designated as Engel II, with only 1.12% classified as Engel IVA. The median QOLIE31 score was 84 (IQR: 75–90), with 74.16% of the participants successfully reintegrating into academic or employment activities. After 24 months, only 68 patients completed the follow‐up, with 69.12% achieving an Engel IA classification. Individuals with a secondary education or higher were more likely to achieve an Engel IA classification at 12 months (OR: 5.11; P = 0.005; CI: 1.63–16.01), after adjusting for sex and age. We concluded that most patients exhibited favorable outcomes after 1 year of follow‐up. However, lower educational attainment was linked to worse postsurgical outcomes.
- 12 July 2023
- Published by Wiley in Epilepsia Open
- Vol. 8 (3) , 1175-1181
Open AccessPostsurgical outcomes in a cohort of patients with hippocampal sclerosis: Initial experience in a referral epilepsy center in Peru
Mesial temporal lobe epilepsy, one of the most common forms of epilepsy, is often linked with drug resistance. Surgical intervention is a reliable and safe treatment option, though research into postsurgical outcomes in our locality remains limited. We performed a retrospective observational study included 91 patients with mesial temporal lobe epilepsy and hippocampal sclerosis who had undergone anterior temporal lobectomy between 2012 and 2020 at a surgical epilepsy center located in Lima, Peru. Postoperative outcomes were analyzed using bivariate and multivariate analysis based on the Engel classification. We found that after 12 months of follow‐up, 78.65% of the 91 patients achieved an Engel IA classification, while 9.09% attained Engel IB classification and 11.24% were designated as Engel II, with only 1.12% classified as Engel IVA. The median QOLIE31 score was 84 (IQR: 75–90), with 74.16% of the participants successfully reintegrating into academic or employment activities. After 24 months, only 68 patients completed the follow‐up, with 69.12% achieving an Engel IA classification. Individuals with a secondary education or higher were more likely to achieve an Engel IA classification at 12 months (OR: 5.11; P = 0.005; CI: 1.63–16.01), after adjusting for sex and age. We concluded that most patients exhibited favorable outcomes after 1 year of follow‐up. However, lower educational attainment was linked to worse postsurgical outcomes.