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| Author(s): |
Tassiane Cristina Morais
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Saúde Pública (FSP/CIR) |
| Defense date: | 2019-05-29 |
| Examining board members: |
Luiz Carlos de Abreu;
Eduardo Luzia França;
Claudio Leone;
Isabel Cristina Esposito Sorpreso
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| Advisor: | Luiz Carlos de Abreu |
| Abstract | |
Breastfeeding promotion represents an important public health iniciative in worldwide overweight and obesity management strategies. It is possible that the hormones regulating energy metabolism, such as adiponectin, leptin and melatonin of human colostrum can benefit the infant\'s immune system and minimize the impacts caused by pre-gestational maternal overweight. As these hormones also have immunomodulatory action, changes in their concentrations can affect the functional activity of mononuclear cells of human colostrum and contribute to the increase of neonatal infections. Therefore, the aim of this study is to analyze the functional activity of colostrum mononuclear phagocytes in women with pregestational overweight, with absence or presence of adiponectin, leptin and melatonin. Colostrum samples collected from 109 healthy donors were divided into two groups: the control group and the high body mass index (BMI) group. Colostrum samples were centrifuged to obtain the cell button and supernatant. The supernatant was used for melatonin dosing performed by ELISA, mononuclear cells used to phagocytosis assay, by flow cytometry and production of reactive species of oxygen, intracellular calcium and apoptosis assays were performed by fluorimetry using plate reader. Statistically significant differences were considered when p <0.05. Colostrum of pre-gestational high BMI group had higher concentration of melatonin (p <0.05). Mononuclear phagocytes of high BMI group had a lower index of phagocytosis (p <0.05). However, the stimuli restored the phagocytic activity for high BMI group (p <0.05). Adiponectin+leptin was the stimulus that developed a more effective response, with restoration of reactive oxygen species levels, maintenance of intracellular calcium and elevation of apoptosis index (p < 0.05) in the high BMI group. These data reinforce that breastfeeding is beneficial to child\'s health and maintaining endogenous levels of adiponectin, leptin and melatonin may increase protection and decrease neonatal infection rates in children of women with high BMI. Thus, public policies that support pre-gestational weight control should be encouraged. (AU) | |
| FAPESP's process: | 15/01051-3 - FUNCTIONAL ACTIVITY OF CELL MONONUCLEAR COLOSTRUM MOTHERS WITH OVERWEIGHT AND OBESITY AND THE ROLE OF AGENTS IMMUNOMODULATORS: ADIPONECTIN, LEPTIN AND MELATONIN |
| Grantee: | Tassiane Cristina Morais |
| Support Opportunities: | Scholarships in Brazil - Doctorate |