Maternal Minocycline as Fetal Therapy in a Rat Model of Myelomeningocele.

Autor: Biancotti JC; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Sescleifer AM; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Sferra SR; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Penikis AB; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Halbert-Elliott KM BS; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Bubb CR; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland., Kunisaki SM; Division of General Pediatric Surgery, Department of Surgery, Johns Hopkins School of Medicine, Baltimore, Maryland. Electronic address: skunisa1@jhmi.edu.
Jazyk: angličtina
Zdroj: The Journal of surgical research [J Surg Res] 2024 Sep; Vol. 301, pp. 696-703. Date of Electronic Publication: 2024 Aug 20.
DOI: 10.1016/j.jss.2024.07.088
Abstrakt: Introduction: This study aimed to investigate whether the maternal administration of minocycline, a tetracycline antibiotic known to have anti-inflammatory and neuroprotective properties in models of neural injury, reduces inflammation and neural cell death in a fetal rat model of myelomeningocele (MMC).
Methods: E10 pregnant rats were gavaged with olive oil or olive oil + retinoic acid to induce fetal MMC. At E12, the dams were exposed to regular drinking water or water containing minocycline (range, 40-140 mg/kg/day). At E21, fetal lumbosacral spinal cords were isolated for immunohistochemistry and quantitative gene expression studies focused on microglia activity, inflammation, and apoptosis (P < 0.05).
Results: There was a trend toward decreased activated Iba1+ microglial cells within the dorsal spinal cord of MMC pups following minocycline exposure when compared to water (H 2 O) alone (P = 0.052). Prenatal minocycline exposure was correlated with significantly reduced expression of the proinflammatory cytokine, IL-6 (minocycline: 1.75 versus H 2 O: 3.52, P = 0.04) and apoptosis gene, Bax (minocycline: 0.71 versus H 2 O: 1.04, P < 0.001) among MMC pups.
Conclusions: This study found evidence that the maternal administration of minocycline reduces selected markers of inflammation and apoptosis within the exposed dorsal spinal cords of fetal MMC rats. Further study of minocycline as a novel prenatal treatment strategy to mitigate spinal cord damage in MMC is warranted.
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Databáze: MEDLINE