Juan M. Toledano

Dr. Juan M. Toledano


Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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3 November 2023 in Nutrients
Verified
Journal Article
Open access
PDF file
MPMaria Puche-Juarez
Maria Puche-Juarez
JTJuan M. Toledano
Juan M. Toledano
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
YOYolanda Gálvez Ontiveros
Yolanda Gálvez Ontiveros
Ana RivasAna Rivas
Ana Rivas
Julio OchoaJulio Ochoa
Julio Ochoa
Endocrine disrupting chemicals (EDCs) are exogenous substances widely disseminated both in the environment and in daily-life products which can interfere with the regulation and function of the endocrine system. These substances have gradually entered the food chain, being frequently found in human blood and urine samples. This becomes a particularly serious issue when they reach vulnerable populations such as pregnant women, whose hormones are more unstable and vulnerable to EDCs. The proper formation and activity of the placenta, and therefore embryonic development, may get seriously affected by the presence of these chemicals, augmenting the risk of several pregnancy complications, including intrauterine growth restriction, preterm birth, preeclampsia, and gestational diabetes mellitus, among others. Additionally, some of them also exert a detrimental impact on fertility, thus hindering the reproductive process from the beginning. In several cases, EDCs even induce cross-generational effects, inherited by future generations through epigenetic mechanisms. These are the reasons why a proper understanding of the reproductive and gestational alterations derived from these substances is needed, along with efforts to establish regulations and preventive measures in order to avoid exposition (especially during this particular stage of life).

21 May 2024 in Nutrients
Verified
Journal Article
Open access
PDF file
JTJuan M. Toledano
Juan M. Toledano
MPMaria Puche-Juarez
Maria Puche-Juarez
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
PGPatricia González-Palacios
Patricia González-Palacios
Ana RivasAna Rivas
Ana Rivas
Javier Díaz CastroJavier Díaz Castro
Javier Díaz Castro
During the last decades, endocrine-disrupting chemicals (EDCs) have attracted the attention of the scientific community, as a result of a deepened understanding of their effects on human health. These compounds, which can reach populations through the food chain and a number of daily life products, are known to modify the activity of the endocrine system. Regarding vulnerable groups like pregnant mothers, the potential damage they can cause increases their importance, since it is the health of two lives that is at risk. EDCs can affect the gestation process, altering fetal development, and eventually inducing the appearance of many disorders in their childhood and/or adulthood. Because of this, several of these substances have been studied to clarify the influence of their prenatal exposure on the cognitive and psychomotor development of the newborn, together with the appearance of non-communicable diseases and other disorders. The most novel research on the subject has been gathered in this narrative review, with the aim of clarifying the current knowledge on the subject. EDCs have shown, through different studies involving both animal and human investigation, a detrimental effect on the development of children exposed to the during pregnancy, sometimes with sex-specific outcomes. However, some other studies have failed to find these associations, which highlights the need for deeper and more rigorous research, that will provide an even more solid foundation for the establishment of policies against the extended use of these chemicals.

13 August 2024 in Antioxidants
Verified
Journal Article
Open access
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JTJuan M. Toledano
Juan M. Toledano
MPMaria Puche-Juarez
Maria Puche-Juarez
José María Gálvez NavasJosé María Gálvez Navas
José María Gálvez Navas
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
Javier Díaz CastroJavier Díaz Castro
Javier Díaz Castro
Julio OchoaJulio Ochoa
Julio Ochoa
Pregnancy is a complex and challenging process associated with physiological changes whose objective is to adapt the maternal organism to the increasing energetic requirements due to embryo and fetal development. A failed adaptation to these demands may lead to pregnancy complications that threaten the health of both mothers and their offspring. Since mitochondria are the main organelle responsible for energy generation in the form of ATP, the adequate state of these organelles seems crucial for proper pregnancy development and healthy pregnancy outcomes. The homeostasis of these organelles depends on several aspects, including their content, biogenesis, energy production, oxidative stress, dynamics, and signaling functions, such as apoptosis, which can be modified in relation to diseases during pregnancy. The etiology of pregnancy disorders like preeclampsia, fetal growth restriction, and gestational diabetes mellitus is not yet well understood. Nevertheless, insufficient placental perfusion and oxygen transfer are characteristic of many of them, being associated with alterations in the previously cited different aspects of mitochondrial homeostasis. Therefore, and due to the capacity of these multifactorial organelles to respond to physiological and pathophysiological stimuli, it is of great importance to gather the currently available scientific information regarding the relationship between main pregnancy complications and mitochondrial alterations. According to this, the present review is intended to show clear insight into the possible implications of mitochondria in these disorders, thus providing relevant information for further investigation in relation to the investigation and management of pregnancy diseases.

22 April 2023 in Diagnostics
Verified
Journal Article
Open access
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MPMaria Puche-Juarez
Maria Puche-Juarez
JTJuan M. Toledano
Juan M. Toledano
Julio OchoaJulio Ochoa
Julio Ochoa
Javier Díaz CastroJavier Díaz Castro
Javier Díaz Castro
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
Background: Obesity and being overweight have become one of the world’s most severe health issues, not only because of the pathology but also because of the development of related comorbidities. Even when children reach adulthood, the mother’s environment during pregnancy has been found to have a significant impact on obesity prevention in children. Thus, both maternal dietary habits and other factors such as gestational diabetes mellitus, excessive weight gain during pregnancy, smoking, or endocrine factors, among others, could influence newborn growth, adiposity, and body composition at birth, in childhood and adolescence, hence programming health in adulthood. Methods: The aim of this review is to analyze the most recent human studies on the programming of fetal adipose tissue to determine which modifiable factors may influence adiposity and thus prevent specific disorders later in life by means of a bibliographic review of articles related to the subject over the last ten years. Conclusions: The importance of a healthy diet and lifestyle not only during pregnancy and the first months of life but also throughout childhood, especially during the first two years of life as this is a period of great plasticity, where the foundations for optimal health in later life will be laid, preventing the emergence of noncommunicable diseases including obesity, diabetes mellitus type 2, hypertension, being overweight, and any other pathology linked to metabolic syndrome, which is so prevalent today, through health programs beginning at a young age.

17 January 2025 in Nutrients
Verified
Journal Article
Open access
PDF file
MPMaria Puche-Juarez
Maria Puche-Juarez
JTJuan M. Toledano
Juan M. Toledano
Daniel Hinojosa-NogueiraDaniel Hinojosa-Nogueira
Daniel Hinojosa-Nogueira
Catalina De Paco MatallanaCatalina De Paco Matallana
Catalina De Paco Matallana
JSJavier Sanchez-Romero
Javier Sanchez-Romero
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
Maternal nutrition during pregnancy plays a pivotal role in influencing both maternal and fetal health, impacting neonatal anthropometric outcomes and long-term disease susceptibility. An advanced maternal age (AMA ≥ 35 years) has been linked to increased risks of obstetric complications and adverse neonatal outcomes, yet its specific nutritional profile remains underexplored. Background/Objectives: This study aimed to evaluate the nutrient and polyphenol intakes of women at an AMA compared to those of a younger control group and to investigate associations with neonatal anthropometric measures. Methods: A cohort of 200 pregnant women, stratified into AMA and control groups, completed a food frequency questionnaire during the second trimester. Neonatal anthropometric data were collected at delivery. Results: Intakes of fiber, zinc, copper, selenium, vitamins E, B1, B3 and folate were lower in the AMA group in comparison with the control values. Negative correlations were found between fiber, vitamin A and vitamin E and the head circumference of the newborn, with fiber being identified as a potential predictor of this parameter. Conclusions: Despite some limitations, such as the fact that the FFQ was completed only once during pregnancy and the cross-sectional design of the study, the findings highlight notable nutritional deficiencies among AMA women, which may influence neonatal outcomes such as head circumference. These results underscore the need for nutritional guidelines and supplementation strategies tailored to pregnant women over 35 years of age.

31 May 2023 in Antioxidants
Verified
Journal Article
Open access
PDF file
Jorge Moreno-FernandezJorge Moreno-Fernandez
Jorge Moreno-Fernandez
MPMaria Puche-Juarez
Maria Puche-Juarez
JTJuan M. Toledano
Juan M. Toledano
Ignacio Chirosa-RíosIgnacio Chirosa-Ríos
Ignacio Chirosa-Ríos
Luis Javier Chirosa RíosLuis Javier Chirosa Ríos
Luis Javier Chirosa Ríos
Julio OchoaJulio Ochoa
Julio Ochoa
The benefits of physical exercise on health are diminished when it is non-planned, strenuous, or vigorous, which causes an increase in oxygen consumption and production of free radicals, particularly serious at the muscular level. Ubiquinol could help achieve an antioxidant, anti-inflammatory, and ergogenic effect. The aim of this study is to evaluate whether a supplementation of ubiquinol during a short period could have a positive effect on muscle aggression, physical performance, and fatigue perception in non-elite athletes after high intensity circuit weight training. One hundred healthy and well-trained men, (firemen of the Fire Department of Granada) were enrolled in a placebo-controlled, double-blinded, and randomized study, and separated into two groups: the placebo group (PG, n = 50); and the ubiquinol group (UG, n = 50), supplemented with an oral dose. Before and after the intervention, data related to the number of repetitions, muscle strength, and perceived exertion, as well as blood samples were collected. An increase was observed in the UG regarding average load and repetitions, revealing an improvement in muscle performance. Ubiquinol supplementation also reduced muscle damage markers, showing a protective effect on muscle fibers. Therefore, this study provides evidence that ubiquinol supplementation improves muscle performance and prevents muscle damage after strenuous exercise in a population of well-trained individuals who are not elite athletes.