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Early postnatal injections of whole vaccines compared to placebo controls: Differential behavioural outcomes in mice.
- Source :
-
Journal of inorganic biochemistry [J Inorg Biochem] 2020 Nov; Vol. 212, pp. 111200. Date of Electronic Publication: 2020 Jul 27. - Publication Year :
- 2020
-
Abstract
- The present study was designed to evaluate the possible effects of the paediatric vaccination schedule in the United States on the central nervous system in a murine model. We compared the impact of treatment with the whole vaccines versus true placebo control. Seventy-six pups were divided into three groups: two vaccinated groups and unvaccinated control. The two vaccinated groups were treated between 7 and 21 post-natal days either with one or three times of the vaccine doses per body weight as used in children between newborn and eighteen months of age. The post-vaccination development, neuromotor behaviours and neurobehavioural abnormalities (NBAs) were evaluated in all mouse groups during the 67 post-natal weeks of mouse age. Mouse body weight was affected only in the vaccinated females compared to males and control. Some NBAs such as decreased sociability, increased anxiety-like behaviours, and alteration of visual-spatial learning and memory were observed in vaccinated male and female mice compared to controls. The present study also shows a slower acquisition of some neonatal reflexes in vaccinated female mice compared to vaccinated males and controls. The observed neurodevelopmental alterations did not show a linear relationship with vaccine dose, suggesting that the single dose gave a saturated response. The outcomes seemed to be sex-dependent and transient with age.<br /> (Copyright © 2020 Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3344
- Volume :
- 212
- Database :
- MEDLINE
- Journal :
- Journal of inorganic biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 33039918
- Full Text :
- https://doi.org/10.1016/j.jinorgbio.2020.111200