Mariana S. Diniz

Mrs. Mariana S. Diniz

CNC - Center for Neuroscience and Cell Biology, CIBB - Centre for Innovative Biomedicine and Biotechnology, University of Coimbra,, Coimbra, Portugal
orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 May 2021 in European Journal of Clinical Investigation
Verified
Journal Article
Open access
PDF file
LGLuís F. Grilo
Luís F. Grilo
CTCarolina Tocantins
Carolina Tocantins
MDMariana S. Diniz
Mariana S. Diniz
Rodrigo Mello GomesRodrigo Mello Gomes
Rodrigo Mello Gomes
POPaulo Oliveira
Paulo Oliveira
Susana P. PereiraSusana P. Pereira
Susana P. Pereira
Embryonic and foetal development are critical periods of development in which several environmental cues determine health and disease in adulthood. Maternal conditions and an unfavourable intrauterine environment impact foetal development and may programme the offspring for increased predisposition to metabolic diseases and other chronic pathologic conditions throughout adult life. Previously, non‐communicable chronic diseases were only associated with genetics and lifestyle. Now the origins of non‐communicable chronic diseases are associated with early‐life adaptations that produce long‐term dysfunction. Early‐life environment sets the long‐term health and disease risk and can span through multiple generations. Recent research in developmental programming aims at identifying the molecular mechanisms responsible for developmental programming outcomes that impact cellular physiology and trigger adulthood disease. The identification of new therapeutic targets can improve offspring's health management and prevent or overcome adverse consequences of foetal programming. This review summarizes recent biomedical discoveries in the Developmental Origins of Health and Disease (DOHaD) hypothesis and highlight possible developmental programming mechanisms, including prenatal structural defects, metabolic (mitochondrial dysfunction, oxidative stress, protein modification), epigenetic and glucocorticoid signalling‐related mechanisms suggesting molecular clues for the causes and consequences of programming of increased susceptibility of offspring to metabolic disease after birth. Identifying mechanisms involved in DOHaD can contribute to early interventions in pregnancy or early childhood, to re‐set the metabolic homeostasis and break the chain of subsequent events that could lead to the development of disease.

2 August 2023 in Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
Verified
Journal Article
Open access
MDMariana S. Diniz
Mariana S. Diniz
UHUrsula Hiden
Ursula Hiden
IFInês Falcão-Pires
Inês Falcão-Pires
POPaulo J. Oliveira
Paulo J. Oliveira
Luis SobreviaLuis Sobrevia
Luis Sobrevia
Susana P. PereiraSusana P. Pereira
Susana P. Pereira
Gestational diabetes mellitus (GDM) and maternal obesity (MO) increase the risk of adverse fetal outcomes, and the incidence of cardiovascular disease later in life. Extensive research has been conducted to elucidate the underlying mechanisms by which GDM and MO program the offspring to disease. This review focuses on the role of fetoplacental endothelial dysfunction in programming the offspring for cardiovascular disease in GDM and MO pregnancies. We discuss how pre-existing maternal health conditions can lead to vascular dysfunction in the fetoplacental unit and the fetus. We also examine the role of fetoplacental endothelial dysfunction in impairing fetal cardiovascular system development and the involvement of nitric oxide and hydrogen sulfide in mediating fetoplacental vascular dysfunction. Furthermore, we suggest that the L-Arginine-Nitric Oxide and the Adenosine-L-Arginine-Nitric Oxide (ALANO) signaling pathways are pertinent targets for research. Despite significant progress in this area, there are still knowledge gaps that need to be addressed in future research.

31 October 2023 in Nutrients
Verified
Journal Article
Open access
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MDMariana S. Diniz
Mariana S. Diniz
CMCarina Isabel Carvalho Magalhães
Carina Isabel Carvalho Magalhães
CTCarolina Tocantins
Carolina Tocantins
LGLuís F. Grilo
Luís F. Grilo
JTJosé Teixeira
José Teixeira
Susana P. PereiraSusana P. Pereira
Susana P. Pereira
Chronic diseases represent one of the major causes of death worldwide. It has been suggested that pregnancy-related conditions, such as gestational diabetes mellitus (GDM), maternal obesity (MO), and intra-uterine growth restriction (IUGR) induce an adverse intrauterine environment, increasing the offspring’s predisposition to chronic diseases later in life. Research has suggested that mitochondrial function and oxidative stress may play a role in the developmental programming of chronic diseases. Having this in mind, in this review, we include evidence that mitochondrial dysfunction and oxidative stress are mechanisms by which GDM, MO, and IUGR program the offspring to chronic diseases. In this specific context, we explore the promising advantages of maternal antioxidant supplementation using compounds such as resveratrol, curcumin, N-acetylcysteine (NAC), and Mitoquinone (MitoQ) in addressing the metabolic dysfunction and oxidative stress associated with GDM, MO, and IUGR in fetoplacental and offspring metabolic health. This approach holds potential to mitigate developmental programming-related risk of chronic diseases, serving as a probable intervention for disease prevention.

18 March 2022 in WIREs Mechanisms of Disease
Verified
Journal Article
Closed access
CTCarolina Tocantins
Carolina Tocantins
MDMariana S. Diniz
Mariana S. Diniz
LGLuís F. Grilo
Luís F. Grilo
Susana P. PereiraSusana P. Pereira
Susana P. Pereira

13 July 2023 in Metabolites
Verified
Journal Article
Open access
PDF file
MDMariana S. Diniz
Mariana S. Diniz
LGLuís F. Grilo
Luís F. Grilo
CTCarolina Tocantins
Carolina Tocantins
IFInês Falcão-Pires
Inês Falcão-Pires
Susana P. PereiraSusana P. Pereira
Susana P. Pereira
Obesity incidence has been increasing at an alarming rate, especially in women of reproductive age. It is estimated that 50% of pregnancies occur in overweight or obese women. It has been described that maternal obesity (MO) predisposes the offspring to an increased risk of developing many chronic diseases in an early stage of life, including obesity, type 2 diabetes, and cardiovascular disease (CVD). CVD is the main cause of death worldwide among men and women, and it is manifested in a sex-divergent way. Maternal nutrition and MO during gestation could prompt CVD development in the offspring through adaptations of the offspring’s cardiovascular system in the womb, including cardiac epigenetic and persistent metabolic programming of signaling pathways and modulation of mitochondrial metabolic function. Currently, despite diet supplementation, effective therapeutical solutions to prevent the deleterious cardiac offspring function programming by an obesogenic womb are lacking. In this review, we discuss the mechanisms by which an obesogenic intrauterine environment could program the offspring’s cardiovascular metabolism in a sex-divergent way, with a special focus on cardiac mitochondrial function, and debate possible strategies to implement during MO pregnancy that could ameliorate, revert, or even prevent deleterious effects of MO on the offspring’s cardiovascular system. The impact of maternal physical exercise during an obesogenic pregnancy, nutritional interventions, and supplementation on offspring’s cardiac metabolism are discussed, highlighting changes that may be favorable to MO offspring’s cardiovascular health, which might result in the attenuation or even prevention of the development of CVD in MO offspring. The objectives of this manuscript are to comprehensively examine the various aspects of MO during pregnancy and explore the underlying mechanisms that contribute to an increased CVD risk in the offspring. We review the current literature on MO and its impact on the offspring’s cardiometabolic health. Furthermore, we discuss the potential long-term consequences for the offspring. Understanding the multifaceted effects of MO on the offspring’s health is crucial for healthcare providers, researchers, and policymakers to develop effective strategies for prevention and intervention to improve care.

23 January 2024 in Biology
Verified
Journal Article
Open access
PDF file
AKAzra Kulovic-Sissawo
Azra Kulovic-Sissawo
CTCarolina Tocantins
Carolina Tocantins
MDMariana S. Diniz
Mariana S. Diniz
EWElisa Weiß
Elisa Weiß
ASAndreas Steiner
Andreas Steiner
UHUrsula Hiden
Ursula Hiden
Endothelial dysfunction is associated with several lifestyle-related diseases, including cardiovascular and neurodegenerative diseases, and it contributes significantly to the global health burden. Recent research indicates a link between cardiovascular risk factors (CVRFs), excessive production of reactive oxygen species (ROS), mitochondrial impairment, and endothelial dysfunction. Circulating endothelial progenitor cells (EPCs) are recruited into the vessel wall to maintain appropriate endothelial function, repair, and angiogenesis. After attachment, EPCs differentiate into mature endothelial cells (ECs). Like ECs, EPCs are also susceptible to CVRFs, including metabolic dysfunction and chronic inflammation. Therefore, mitochondrial dysfunction of EPCs may have long-term effects on the function of the mature ECs into which EPCs differentiate, particularly in the presence of endothelial damage. However, a link between CVRFs and impaired mitochondrial function in EPCs has hardly been investigated. In this review, we aim to consolidate existing knowledge on the development of mitochondrial and endothelial dysfunction in the vascular endothelium, place it in the context of recent studies investigating the consequences of CVRFs on EPCs, and discuss the role of mitochondrial dysfunction. Thus, we aim to gain a comprehensive understanding of mechanisms involved in EPC deterioration in relation to CVRFs and address potential therapeutic interventions targeting mitochondrial health to promote endothelial function.