Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes
Abstract: Type 2 diabetes (DBT2) affects the central nervous system (CNS) and vision. Environmental enrichment (EA), allows to develop greater physical activity and neurocognitive stimulation, being able to help in experimental animals in the treatment of CNS pathologies. Obj...
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Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología
2021
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/med/article/view/34929 |
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I10-R327-article-34929 |
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Universidad Nacional de Córdoba |
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I-10 |
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R-327 |
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Revista de la Facultad de Ciencias Médicas de Córdoba |
| format |
Artículo revista |
| topic |
enriched environment type 2 diabetes optic nerve Diet high in saturated fat Alcohol diabetes tipo 2 nervio óptico ambiente enriquecido dieta alta en grasas saturadas Alcohol . |
| spellingShingle |
enriched environment type 2 diabetes optic nerve Diet high in saturated fat Alcohol diabetes tipo 2 nervio óptico ambiente enriquecido dieta alta en grasas saturadas Alcohol . Campanella , C Díaz Gerevini , GT Pigino , G Lopez , C Priotto, S Daín, A Fuente, G Repossi, G Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| topic_facet |
enriched environment type 2 diabetes optic nerve Diet high in saturated fat Alcohol diabetes tipo 2 nervio óptico ambiente enriquecido dieta alta en grasas saturadas Alcohol . |
| author |
Campanella , C Díaz Gerevini , GT Pigino , G Lopez , C Priotto, S Daín, A Fuente, G Repossi, G |
| author_facet |
Campanella , C Díaz Gerevini , GT Pigino , G Lopez , C Priotto, S Daín, A Fuente, G Repossi, G |
| author_sort |
Campanella , C |
| title |
Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| title_short |
Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| title_full |
Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| title_fullStr |
Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| title_full_unstemmed |
Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| title_sort |
effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes |
| description |
Abstract:
Type 2 diabetes (DBT2) affects the central nervous system (CNS) and vision. Environmental enrichment (EA), allows to develop greater physical activity and neurocognitive stimulation, being able to help in experimental animals in the treatment of CNS pathologies. Objective: To study the effect of exposure to EA on the ultrastructure of the optic nerve and metabolic markers in diabetic animals.
We used 24 12-month-old male Wistar rats, divided into 6 groups, 4 with a diet with 30% saturated fat (HFD) and / or moderate consumption (0.42 g / kg weight / day) of alcohol (Alc). The 2 non-diabetic control groups (C), consumed a standard chow diet. The EA groups were housed in large cages, with treadmills and ramps, the other groups in standard animal cages. The trial lasted 16 months. Metabolic markers (lipidemia, glycemia and weight) were measured. At the end of the test, the optic nerves were extracted, fixed and processed for electron microscopy. The data obtained were analyzed by ANOVA, p≤0.05.
The animals presented DBT2 at 7 months of the test, in groups HFD, Alc, HFD + Alc, hypertriglyceridemia and hypercholesterolemia and obesity were observed. Animals with EA at the end of the trial decreased their glycemic values (118 ± 5 mg / dl) and had a normal weight. In the optic nerves, signs of atrophy, alteration of the shape of mitochondria and their crests were observed in the animals on the HFD and / or Alcohol diet, compared with the control groups (C and C + AE). The HFD, Alc, HFD + Alc and HFD + Alc + AE groups showed thickening of the myelin sheaths (between 39 and 233%, p = 0.01). In the animals with the HFD diet, more intracytoplasmic electrodense deposits were found, in HFD + Alc and HFD + Alc + AE the myelin sheath was observed with a greater separation of the axon (75 and 50% more, p = 0.05) than in the group C. In the Alc group, larger mitochondria were observed (119 vs 107 nm, p = 0.05) than in C.
Diet and lack of physical activity led the animals to develop DBT2. This condition affected the ultrastructure of the optic nerve. Exposure to an enriched environment partially improved metabolic and ultrastructural alterations.
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| publisher |
Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología |
| publishDate |
2021 |
| url |
https://revistas.unc.edu.ar/index.php/med/article/view/34929 |
| work_keys_str_mv |
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2024-09-03T21:02:48Z |
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2024-09-03T21:02:48Z |
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I10-R327-article-349292024-04-15T16:19:09Z Effects of an enriched environment on metabolic markers and ultrastructural morphology of optic nerve in an experimental model of diabetes Efectos de un medio ambiente enriquecido sobre marcadores metabólicos y la morfología ultraestructural del nervio óptico en un modelo experimental de diabetes A Campanella , C Díaz Gerevini , GT Pigino , G Lopez , C Priotto, S Daín, A Fuente, G Repossi, G enriched environment type 2 diabetes optic nerve Diet high in saturated fat Alcohol diabetes tipo 2 nervio óptico ambiente enriquecido dieta alta en grasas saturadas Alcohol . Abstract: Type 2 diabetes (DBT2) affects the central nervous system (CNS) and vision. Environmental enrichment (EA), allows to develop greater physical activity and neurocognitive stimulation, being able to help in experimental animals in the treatment of CNS pathologies. Objective: To study the effect of exposure to EA on the ultrastructure of the optic nerve and metabolic markers in diabetic animals. We used 24 12-month-old male Wistar rats, divided into 6 groups, 4 with a diet with 30% saturated fat (HFD) and / or moderate consumption (0.42 g / kg weight / day) of alcohol (Alc). The 2 non-diabetic control groups (C), consumed a standard chow diet. The EA groups were housed in large cages, with treadmills and ramps, the other groups in standard animal cages. The trial lasted 16 months. Metabolic markers (lipidemia, glycemia and weight) were measured. At the end of the test, the optic nerves were extracted, fixed and processed for electron microscopy. The data obtained were analyzed by ANOVA, p≤0.05. The animals presented DBT2 at 7 months of the test, in groups HFD, Alc, HFD + Alc, hypertriglyceridemia and hypercholesterolemia and obesity were observed. Animals with EA at the end of the trial decreased their glycemic values (118 ± 5 mg / dl) and had a normal weight. In the optic nerves, signs of atrophy, alteration of the shape of mitochondria and their crests were observed in the animals on the HFD and / or Alcohol diet, compared with the control groups (C and C + AE). The HFD, Alc, HFD + Alc and HFD + Alc + AE groups showed thickening of the myelin sheaths (between 39 and 233%, p = 0.01). In the animals with the HFD diet, more intracytoplasmic electrodense deposits were found, in HFD + Alc and HFD + Alc + AE the myelin sheath was observed with a greater separation of the axon (75 and 50% more, p = 0.05) than in the group C. In the Alc group, larger mitochondria were observed (119 vs 107 nm, p = 0.05) than in C. Diet and lack of physical activity led the animals to develop DBT2. This condition affected the ultrastructure of the optic nerve. Exposure to an enriched environment partially improved metabolic and ultrastructural alterations. Resumen: La diabetes tipo 2 (DBT2) afecta el sistema nervioso central (SNC) y la visión. El enriquecimiento ambiental (AE), permite desarrollar mayor actividad física y estímulo neurocognitivo, pudiendo ayudar en animales experimentales en el tratamiento de patologías del SNC. Objetivo: Estudiar el efecto de la exposición a un AE sobre la ultraestructura del nervio óptico y marcadores metabólicos en animales diabéticos. Utilizamos 24 ratas Wistar macho de 12 meses, divididas en 6 grupos, 4 con una dieta con 30% de grasas saturadas (HFD) y/o consumo moderado (0,42 g/kg peso/día) de alcohol (Alc). Los 2 grupos controles no diabéticos (C), consumieron una dieta chow estándar. Los grupos con AE se alojaron en jaulas grandes, con ruedas de correr y rampas, los otros grupos en jaulas estándar de bioterio. El ensayo duró 16 meses. Se midieron marcadores metabólicos (lipidemia, glucemia y peso). Al finalizar el ensayo los nervios ópticos fueron extraídos, fijados y procesados para microscopía electrónica. Los datos obtenidos se analizaron mediante ANOVA, p≤0,05. Los animales presentaron DBT2 a los 7 meses del ensayo, en grupos HFD, Alc, HFD+Alc se observó hipertrigliceridemia e hipercolesterolemia y obesidad. Los animales con AE al final del ensayo disminuyeron sus valores glucémicos (118 ±5 mg/dl) y tuvieron un peso normal. En los nervios ópticos se observaron signos de atrofia, alteración de la forma de mitocondrias y sus crestas en los animales con dieta HFD y/o Alcohol, comparados con los grupos control (C y C+AE). Los grupos HFD, Alc, HFD+Alc y HFD+Alc+AE mostraron engrosamientos de las vainas de mielina (entre 39 y 233%, p=0.01). En los animales con dieta HFD se hallaron más depósitos electrodensos intracitoplasmáticos, en HFD+Alc y HFD+Alc+AE la vaina de mielina se observó con una mayor separación del axón (75 y 50% más, p=0.05) que en el grupo C. En el grupo Alc se observaron mitocondrias de mayor tamaño (119 vs 107 nm, p=0.05) que en C. La dieta y falta de actividad física llevaron a los animales a desarrollar DBT2. Esta condición afectó la ultraestructura del nervio óptico. La exposición a un ambiente enriquecido logró mejorar parcialmente las alteraciones metabólicas y ultraestructurales. . Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología 2021-10-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion texto texto texto https://revistas.unc.edu.ar/index.php/med/article/view/34929 Revista de la Facultad de Ciencias Médicas de Córdoba.; Vol. 78 No. Suplemento (2021): Suplemento JIC XXII Revista de la Facultad de Ciencias Médicas de Córdoba; Vol. 78 Núm. Suplemento (2021): Suplemento JIC XXII Revista da Faculdade de Ciências Médicas de Córdoba; v. 78 n. Suplemento (2021): Suplemento JIC XXII 1853-0605 0014-6722 http://creativecommons.org/licenses/by-nc/4.0 |