RGD Reference Report - Minocycline reduces neuronal death and attenuates microglial response after pediatric asphyxial cardiac arrest. - Rat Genome Database

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Minocycline reduces neuronal death and attenuates microglial response after pediatric asphyxial cardiac arrest.

Authors: Tang, M  Alexander, H  Clark, RS  Kochanek, PM  Kagan, VE  Bayir, H 
Citation: Tang M, etal., J Cereb Blood Flow Metab. 2010 Jan;30(1):119-29. Epub 2009 Sep 16.
RGD ID: 4889980
Pubmed: PMID:19756023   (View Abstract at PubMed)
PMCID: PMC2949095   (View Article at PubMed Central)
DOI: DOI:10.1038/jcbfm.2009.194   (Journal Full-text)

The mechanisms leading to delayed neuronal death after asphyxial cardiac arrest (ACA) in the developing brain are unknown. This study aimed at investigating the possible role of microglial activation in neuronal death in developing brain after ACA. Postnatal day-17 rats were subjected to 9 mins of ACA followed by resuscitation. Rats were randomized to treatment with minocycline, (90 mg/kg, intraperitoneally (i.p.)) or vehicle (saline, i.p.) at 1 h after return of spontaneous circulation. Thereafter, minocycline (22.5 mg/kg, i.p.) was administrated every 12 h until sacrifice. Microglial activation (evaluated by immunohistochemistry using ionized calcium-binding adapter molecule-1 (Iba1) antibody) coincided with DNA fragmentation and neurodegeneration in CA1 hippocampus and cortex (assessed by deoxynucleotidyltransferase-mediated dUTP nick-end labeling (TUNEL), Fluoro-Jade-B and Nissl stain). Minocycline significantly decreased both the microglial response and neuronal degeneration compared with the vehicle. Asphyxial CA significantly enhanced proinflammatory cytokine and chemokine levels in hippocampus versus control (assessed by multiplex bead array assay), specifically tumor necrosis factor-alpha (TNF-alpha), macrophage inflammatory protein-1alpha (MIP-1alpha), regulated upon activation, normal T-cell expressed and secreted (RANTES), and growth-related oncogene (GRO-KC) (P<0.05). Minocycline attenuated ACA-induced increases in MIP-1alpha and RANTES (P<0.05). These data show that microglial activation and cytokine production are increased in immature brain after ACA. The beneficial effect of minocycline suggests an important role for microglia in selective neuronal death after pediatric ACA, and a possible therapeutic target.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
CCL5Humancardiac arrest  ISOCcl5 (Rattus norvegicus)protein:increased expression:hippocampus (rat)RGD 
Ccl5Ratcardiac arrest  IEP protein:increased expression:hippocampus (rat)RGD 
Ccl5Mousecardiac arrest  ISOCcl5 (Rattus norvegicus)protein:increased expression:hippocampus (rat)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ccl5  (C-C motif chemokine ligand 5)

Genes (Mus musculus)
Ccl5  (C-C motif chemokine ligand 5)

Genes (Homo sapiens)
CCL5  (C-C motif chemokine ligand 5)


Additional Information