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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2016.tde-10112016-163151
Document
Author
Full name
Marianne Orlandini Klein
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Felicio, Luciano Freitas (President)
Bittencourt, Jackson Cioni
Cantamessa, Daniela Cristina Ceccatto Gerardin
Donato Júnior, José
Spinosa, Helenice de Souza
Title in Portuguese
Dieta hiperlipídica materna: influências sobre o comportamento maternal e o desenvolvimento da prole.
Keywords in Portuguese
Alta ingestão de gordura
Comportamento materno
Ejeção de leite
Estudo transgeracional
Hipotálamo
Ingestão alimentar
Opióides
Abstract in Portuguese
Uma nutrição maternal rica em lipídios pode causar prejuízos no desenvolvimento e na vida adulta dos descendentes, como elevado risco de desenvolver alterações metabólicas e obesidade, e também parece alterar a sinalização central por opióides. Porém, estudos realizados a fim de investigar a influência da dieta hiperlipídica (HF) materna sobre o comportamento materno e o desenvolvimento da prole não são conclusivos. Este trabalho investigou a influência da dieta HF sobre a interação mãe-filhote, em duas gerações, e os efeitos imediatos e tardios sobre a prole, relacionando-os ao sistema opióide. As mães HF apresentaram prejuízos na ejeção do leite e maior expressão dos receptores opióides no hipotálamo. No geral, os descendentes HF apresentaram elevados níveis de colesterol, baixa leptina plasmática, maior expressão de peptídeos relacionados à ingestão alimentar, e menor peso. Portanto, o consumo materno de dieta HF causou alterações metabólicas, comportamentais e na expressão gênica na mãe e nos descendentes, mesmo que esses animais não tenham se tornado obesos.
Title in English
Maternal high fat diet: influences on maternal behavior and offspring development.
Keywords in English
Food intake
High fat intake
Hypothalamus
Maternal behavior
Milk ejection
Opioids
Transgenerational study
Abstract in English
A maternal nutrition high in fat may impair offspring development and adulthood, increasing the risk to develop metabolic alterations and obesity, and may modify the opioids central signaling. However, studies investigating maternal high fat (HF) diet influences on maternal behavior and offspring development are inconclusive. This study aimed to evaluate the influences of a diet high in fat on mother-pup interaction, in two generations, and its early and late effects in the offspring, connecting them to the opioid system. HF dams show decreased milk ejections and higher expression of opioid receptors in the hypothalamus. Overall, HF offspring had higher cholesterol levels, less serum leptin, higher expression of peptides related to food intake, and were lighter. Therefore, maternal intake of HF diet promoted metabolic, behavioral and gene expression alterations in the mother and her offspring, even though these animals did not become obese.
 
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Publishing Date
2016-11-11
 
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