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Prenatal exposure t...
Prenatal exposure to interleukin-6 results in inflammatory neurodegeneration in hippocampus with NMDA/GABA(A) dysregulation and impaired spatial learning
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- Samuelsson, Anne-Maj, 1977 (författare)
- Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory
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- Jennische, Eva, 1949 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk kemi och cellbiologi,Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology
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- Hansson, Hans-Arne, 1939 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk kemi och cellbiologi,Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology
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visa fler...
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- Holmäng, Agneta, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi, sektionen för fysiologi,Institute of Neuroscience and Physiology, Department of Physiology
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visa färre...
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(creator_code:org_t)
- 2006
- 2006
- Engelska.
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Ingår i: Am J Physiol Regul Integr Comp Physiol. ; 290:5
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- During pregnancy, infection or immune responses induce cytokine release, which might influence fetal neurodevelopment, leading to neurodegenerative disease in adulthood. Because the hippocampus is a key area for learning and memory, we evaluated 4- and 24-wk-old rats for the effects of early and late prenatal exposure to interleukin-6 (IL-6) on hippocampal morphology, expression of mRNA for IL-6, the gamma-aminobutyric acid receptor (GABA(Aalpha5)), the NR1 subunit of the N-methyl-D-aspartate receptor, and glial fibrillary acidic protein (GFAP), caspase-3 protein and mRNA levels, and learning abilities. Late exposure increased serum IL-6 and hippocampal expression of IL-6 mRNA at 4 and 24 wk. All adult rats showed neuronal loss in the hilus and astrogliosis; males had losses mainly in the CA2 and CA3 regions, and females in CA1. Expression of GABA(Aalpha5), NR1, and GFAP mRNA increased in late-exposed males and females at 4 and 24 wk. mRNA and protein levels of the apoptosis marker caspase-3 were increased in all late-exposed rats except males at 4 wk. Evaluation of hippocampus-dependent working memory in the Morris water maze at 20 wk of age showed increases in escape latency and time spent near the pool wall in all IL-6 adult rats, especially females. These findings suggest that fetal IL-6 exposure, especially in late pregnancy, leads to increased IL-6 levels in the circulation and hippocampus, abnormalities of hippocampal structural and morphology, and decreased learning during adulthood.
Nyckelord
- Adrenocorticotropic Hormone/blood
- Aging/metabolism/psychology
- Animals
- Apoptosis/drug effects
- Astrocytes/pathology
- Blotting
- Western
- Body Weight/physiology
- Caspase 3
- Caspases/metabolism
- DNA
- Complementary/biosynthesis/genetics
- Female
- Glial Fibrillary Acidic Protein/metabolism
- Gliosis/chemically induced/pathology
- Hippocampus/*pathology
- Hydrocortisone/blood
- Immunohistochemistry
- Inflammation/*pathology
- Interleukin-6/*pharmacology
- Maze Learning/*physiology
- Nerve Degeneration/*pathology
- Pregnancy
- Prenatal Exposure Delayed Effects
- Rats
- Rats
- Wistar
- Receptors
- GABA-A/*physiology
- Receptors
- N-Methyl-D-Aspartate/drug effects/*physiology
- Reverse Transcriptase Polymerase Chain Reaction
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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