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Hippocampal neuronal apoptosis in rat offspring due to gestational diabetes / Apoptosis neuronal del hipocampo en crías de ratas debido a la diabetes gestacional
Ghafari, Soraya; Asadi, Ebrahim; Shabani, Ronak; Golalipour, Mohammad Jafar.
  • Ghafari, Soraya; Golestan University of Medical Sciences. Department of Anatomical Sciences. Gorgan. IR
  • Asadi, Ebrahim; Tehran University of Medical Sciences. School of medicine. Department of Anatomical Sciences. Tehran. IR
  • Shabani, Ronak; Iran University of Medical Sciences. School of Medicine. Department of anatomical sciences. Tehran. IR
  • Golalipour, Mohammad Jafar; Golestan University of Medical Sciences. Department of Anatomical Sciences. Gorgan Congenital Malformations Research Center. Gorgan. IR
Int. j. morphol ; 34(1): 205-211, Mar. 2016. ilus
Article in English | LILACS | ID: lil-780495
ABSTRACT
Gestational diabetes mellitus (GDM) defined as impaired glucose tolerance affects approximately 6 % of all pregnant women who have never before had diabetes, but who do have high blood glucose levels during pregnancy. This study was done to evaluate the apoptosis in the neuronal cells in the CA1, CA2 and CA3 subfields of hippocampus and dentate gyrus in offspring of gestational diabetes at the 7, 21 and 28 d in postnatal rats. Thirty Wistar rat dams were randomly allocated in control and diabetic group. Dams in diabetic group were received 40 mg/kg/BW of streptozotocin at the first day of gestation and control groups received an equivalent volume normal saline injection intraperitoneally (IP). Six offspring of GDM and control dams, at the 7, 21, 28 postnatal day were randomly were sacrificed quickly with anesthesia. The coronal sections of brain serially collected. The apoptosis neurons were evaluated with TUNEL Assay. In the CA1, the number of apoptotic cells in 7, 21 and 28 d of postnatal life were significantly increased in GDM compared to controls (P<0.001). In the CA2, CA3 the number of apoptotic cells in 7, 21 and 28 d age-old offspring were significantly increased in GDM compared to controls (P<0.001). In the dentate gyrus, the number of apoptotic cells in 7, 21 and 28 d of postnatal life were significantly increased in GDM compared to controls (P<0.01). This study showed that the uncontrolled gestational diabetes significantly increases neuronal apoptosis in hippocampal and dentate gyrus in rat offspring.
RESUMEN
La diabetes mellitus gestacional (DMG) se define como la intolerancia a la glucosa que afecta aproximadamente al 6 % de todas las mujeres embarazadas que nunca han tenido diabetes, pero que sí tienen niveles de glucosa en la sangre elevados durante el embarazo. El objetivo de este estudio fue evaluar la apoptosis de células neuronales en CA1, CA2 y CA3, subcampos del hipocampo y el giro dentado, en las crías de ratas con diabetes gestacional en los días 7, 21 y 28 luego del nacimiento. Se utilizaron 30 ratas Wistar asignadas aleatoriamente en grupos control y diabético (GDM). Se administró al grupo diabético 40 mg/kg de peso corporal de estreptozotocina en el primer día de gestación y el grupo control recibió un volumen equivalente de solución salina normal por inyección vía intraperitoneal. Seis crías de los grupos GDM y control fueron seleccionadas aleatoriamente y sacrificadas bajo anestesia los días 7, 21, 28. Se tomaron secciones seriales coronales del cerebro. La apoptosis neuronal se evaluó mediante ensayo TUNEL. En el CA1, el número de células apoptóticas a los 7, 21 y 28 d se incrementó significativamente en el grupo GDM en comparación con los controles (P <0.001). En el CA2 y CA3 el número de células apoptóticas en los días 7, 21 y 28 también se incrementó significativamente en GDM en comparación con los controles (P <0,001). En el giro dentado, el número de células apoptóticas en los días 7, 21 y 28 se incrementó significativamente en GDM en comparación con los controles (P <0,01). Este estudio mostró que la diabetes gestacional no controlada aumenta significativamente la apoptosis neuronal en el hipocampo y el giro dentado en las crías de las ratas.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Prenatal Exposure Delayed Effects / Diabetes, Gestational / Apoptosis / Hippocampus / Neurons Limits: Animals / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2016 Type: Article / Project document Affiliation country: Iran Institution/Affiliation country: Golestan University of Medical Sciences/IR / Iran University of Medical Sciences/IR / Tehran University of Medical Sciences/IR

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Full text: Available Index: LILACS (Americas) Main subject: Prenatal Exposure Delayed Effects / Diabetes, Gestational / Apoptosis / Hippocampus / Neurons Limits: Animals / Pregnancy Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2016 Type: Article / Project document Affiliation country: Iran Institution/Affiliation country: Golestan University of Medical Sciences/IR / Iran University of Medical Sciences/IR / Tehran University of Medical Sciences/IR