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Karen Amaral Tavares Pinheiro - Universidade Católica de Pelotas

Karen Amaral Tavares Pinheiro - Universidade Católica de Pelotas

128 A correlation within

128 A correlation within the biomarkers was conducted. IL-6 and NGF had a positive correlation (r=0.575; p=0.001), and NGF had a positive correlation with infant motor development (r=0.207; p=0.026). IL-6 did not have a direct correlation with infant motor development (r=0.040; p=0.663). Nevertheless, NGF had a negative correlation with infant cortisol levels (r=-0.147; p=0.054). Breastfeeding for at least one month had a positive correlation with NGF (r=0.194; p=0.037) but was not associated with infant motor development (p=0.290) or with PPAD (p= 0.111). In an adjusted linear regression analysis performed with the variables that remained in the model (p

129 DISCUSSION This study hypothesizes two distinct dimensions that represent the bases of infant neurobiological – motor development. The restrained factors – psychological and biological – explained 65.3% of the variance. This result is consistent with the results of other studies that have pointed to the importance of psychiatric illness in mothers and of biochemical influences on infant neurobiological development (1; 8; 9; 10). Although this study is limited by the fact that the components observed here represent only a subset of the psychological and biological aspects involved in the process of infant motor development, the consistency of the findings of this study must be considered. Similar to the findings of previous studies (4), the mothers in our sample with a history of affective disorder, PPAD or anxiety disorder tended to have offspring with low motor development. In the original experiments by Denenberg and colleagues, it was clearly shown that the mother-infant relationship had decisive effects on infant development. In particular, the “emotional state” of the mother affected the offspring (23). The mother’s psychological sickness interferes with her ability to take care of the infant (32). In other words, healthy mothers are more capable of becoming involved with their offspring and providing an appropriate emotional environment. The healthy mothers in our study had increased levels of NGF, and we observed an association with better infant motor development. These results may possibly be explained by the study about falling in love from Emanuele (33). According to his findings, NGF levels are significantly higher in subjects in love. His study suggests that elevated NGF levels may be related to specific emotions, such as intensely focused attention on a preferred individual, emotional dependency on and craving for emotional union with this beloved, and euphoria and increased energy to maintain the relationship. Our results could be hypothetically explained by considering that the mother-infant relationship is a love

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