Rosa María Mateos

• Ph.D. in Biochemistry and Molecular Biology
• Tenured Lecturer at Universidad de Cádiz

Childhood obesity, and specifically its metabolic complications, are related to deficient antioxidant capacity and oxidative stress. Erythrocytes are constantly exposed to multiple sources of oxidative stress; hence, they are equipped with powerful antioxidant mechanisms requiring permanent reducing power generation and turnover. Glucose-6-phosphat...

Insulin resistance (IR) is the most common metabolic disturbance in children with obesity. Children with obesity and insulin resistance (ObIR+) display a detriment in erythroid antioxidant defenses, caused by an impaired catalase activity and the increase in oxidative and pro-inflammatory markers. Therefore, erythrocytes from ObRI + are more vulner...

Metals are redox-active substances that participate in central biological processes and may be involved in a multitude of pathogenic events. However, considering the inconsistencies reported in the literature, further research is crucial to disentangle the role of metal homeostasis in childhood obesity and comorbidities using well-characterized coh...

Moringa oleifera Lam. is known to have significant antioxidant properties. Because of this, the development of an optimal extraction method is crucial to obtain pharmacological products based on the bioactive compounds produced by this tree. Through a Plackett–Burman and a Box–Behnken design, enzymatic extraction conditions (temperature, agitation,...

Introduction An adverse proinflammatory milieu contributes to abnormal cellular energy metabolism response. Gestational diabetes mellitus (GDM) is closely related to an altered maternal inflammatory status. However, its role on lipid metabolism regulation in human placenta has not yet been assessed. The aim of this study was to examine the impact o...

Naringenin is one of the main phenolic compounds found in grapefruit (Citrus × paradisi Macfad.). This compound is known for its therapeutical properties as an antioxidant, antidiabetic, antihyperlipidemic and antineoplastic agent. In order to enable the development of drugs based on this compound, an appropriate extraction method needs to be devel...

Background Insulin resistance (IR) is considered the main driver of obesity related metabolic complications, and is related to oxidative stress and inflammation, which in turn promote each other. There is currently no specific definition of IR in children, rather, that for adult population is used by pediatric endocrinologists instead. Altered insu...

Background Insulin resistance (IR) is considered the main driver of obesity related metabolic complications, and is related with oxidative stress and inflammation which in turn promote each other. However, there is still no specific definition of IR in children. Altered insulin secretion dynamics are also related with worse metabolic profiles and t...

Although puberty is known to influence obesity progression, the molecular mechanisms underlying the role of sexual maturation in obesity-related complications remains largely unexplored. Here, we delve into the impact of puberty on the most relevant pathogenic hallmarks of obesity, namely oxidative stress and inflammation, and their association wit...

Background: Body mass index (BMI) has long been used as a well-known risk factor for assessing the presence of an inappropriate gestational weight gain (GWG) and their potential repercussions on maternal-fetal axis during pregnancy and postpartum, especially for women with overweight and obesity. However, the potential role that the placenta plays...

Basic research on types 1 and 2 diabetes mellitus require early stage studies using beta cells or cell lines, ideally of human origin and with preserved insulin secretion in response to glucose. The 1.1E7 cells are a hybrid cell line resulting from the electrofusion of dispersed human islets and PANC-1 cells, capable of secreting insulin in respons...

Multiple myeloma (MM) is a B-cell neoplasm that is characterized by the accumulation of malignant plasma cells in the bone marrow. The transcription factor PRDM1 is a master regulator of plasma cell development and is considered to be an oncosuppressor in several lymphoid neoplasms. The PRDM1β isoform is an alternative promoter of the PRDM1 gene th...

Pregnancy-related disorders, including preeclampsia and gestational diabetes, are characterized by the presence of an adverse intrauterine milieu that may ultimately result in oxidative and nitrosative stress. This scenario may trigger uncontrolled production of reactive oxygen species (ROS) such as superoxide anion (O●−) and reactive nitrogen spec...

Obesity is an excessive adipose tissue accumulation that may have detrimental effects on health. Particularly, childhood obesity has become one of the main public health problems in the 21st century, since its prevalence has widely increased in recent years. Childhood obesity is intimately related to the development of several comorbidities such as...

Catalase is a powerful antioxidant metalloenzyme located in peroxisomes which also plays a central role in signaling processes under physiological and adverse situations. Whereas animals contain a single catalase gene, in plants this enzyme is encoded by a multigene family providing multiple isoenzymes whose number varies depending on the species,...

Metabolomics based on direct mass spectrometry analysis shows a great potential in biomedical research because of its high-throughput screening capability and wide metabolome coverage. This chapter contains detailed protocols to perform comprehensive metabolomic fingerprinting of multiple biological samples (serum, plasma, urine, brain, liver, sple...

Low birth weight increases neonatal morbidity and mortality, and surviving infants have increased risk of metabolic and cardiovascular disturbances later in life, as well as other neurological, psychiatric, and immune complications. A gestational excess of glucocorticoids (GCs) is a well-known cause for fetal growth retardation, but the biological...

Objectives Oxidative stress and inflammation have been postulated as underlying mechanisms for the development of obesity-related insulin resistance. This association however, remains elusive especially in childhood. We sought to investigate this relation by measuring oxidative stress and antioxidant response biomarkers, before and during an oral g...

Minimal anonymized data set. (XLSX)

Method for red blood cell fraction purification. (TIF)

Oxidative stress response to 2 different types of exercise in trained young prepuberal children

High sugar consumption elicits numerous deleterious effects on health by inducing insulin resistance, which is closely associated with the development of metabolic disorders such as obesity or type-2 diabetes. Furthermore, there is also growing evidence that caffeine may play an important role in the regulation of insulin release and the appearance...

Dysregulation of NO production is implicated in pregnancy-related diseases, including gestational diabetes mellitus (GDM). The role of NO and its placental targets in GDM pregnancies has yet to be determined. S-Nitrosylation is the NO-derived posttranslational protein modification that can modulate biological functions by forming NO-derived complex...

Supplementary material: Suppelmentary Fig. 1. Experimental design for sampling after treatment with exogenous NO gas. Pepper fruits at the breaking point stage were either subjected or not to 5 ppp NO for 1 h. Then, fruits were kept at room temperature for 10 d. As it can be seen, 3 d after starting the experiment, fruits mostly ripened unless they...

Pepper fruit is one of the highest vitamin C sources of plant origin for our diet. In plants, ascorbic acid is mainly synthesized through the L-galactose pathway, being the L-galactono-1,4-lactone dehydrogenase (GalLDH) the last step. Using pepper fruits, the full GalLDH gene was cloned and the protein molecular characterization accomplished. GalLD...

Background and aims: The mechanisms underlying placenta oxidative stress co-existing with alterations in maternal-placenta interactions during gestational diabetes mellitus (GDM) are not well understood. We sought to evaluate the levels of oxidative stress markers and antioxidants in women with GDM, and to assess the impact on placenta. Material an...

Background: Ghrelin is a peptide hormone with pleiotropic effects. It stimulates cellular proliferation and inhibits apoptosis-mediated cell death. It prevents diabetes mellitus in several models of pancreas aggression (chemical, surgical and biological toxic insults) in both in vivo and in vitro models, and promotes glucose-stimulated insulin sec...

La obesidad es una enfermedad compleja y multifactorial que suele iniciarse desde edades muy tempranas y puede perdurar durante toda la vida. En un sentido más estricto, la obesidad central o tejido adiposo visceral es la causa de alteraciones en metabolismo de lípidos e hidratos de carbono, favoreciendo de esta manera el desarrollo de la resistenc...

Grapevine trunk fungal pathogens, such as Diplodia seriata and Phaeomoniella chlamydospora, can infect plants through pruning wounds. They cause grapevine trunk diseases and are involved in grapevine decline. Accordingly, the protection of pruning wounds is crucial for the management of grapevine trunk diseases. The efficacy of different natural an...

Grapevine trunk fungal pathogens, such as Diplodia seriata and Phaeomoniella chlamydospora, can infect plants through pruning wounds. They cause grapevine trunk diseases and are involved in grapevine decline. Accordingly, the protection of pruning wounds is crucial for the management of grapevine trunk diseases. The efficacy of different natural an...

To evaluate the impact of the pro-inflammatory cytokine hepatocyte growth factor (HGF) on the regulation of glucose and lipid placental metabolism. HGF levels were quantified in amniotic fluid and placenta from control and obese women. 2-deoxy-glucose (2-DOG) uptake, glycolysis, fatty acid oxidation (FAO), fatty acid esterification, de novo fatty a...

PCs are responsible for the production and secretion of antibodies, the effector molecules of the humoral immune response. The molecular mechanisms responsible for vesicle docking and secretion implicated in the antibody-secretion process are not well-known, as they have not been studied, but it is known that SNARE proteins are responsible for many...

Sweet pepper is susceptible to changes in the environmental conditions, especially temperatures below 15 °C. In this work, two sets of pepper fruits (Capsicum annuum L.) which underwent distinct temperature profiles in planta were investigated. Accordingly, two harvesting times corresponding to each set were established: Harvest 1, whose fruits dev...

Ascorbate (vitamin C) is essential for cell metabolism, and its supply to the human diet derives basically from the consumption of fruits and vegetables. Several biosynthetic pathways of ascorbate have been reported in plants, the major physiological one being the so-called Smirnoff-Wheeler pathway. Ascorbate is a powerful antioxidant in plants, al...

Low temperature is an environmental stress that affects crop production and quality and regulates the expression of many genes, and the level of a number of proteins and metabolites. Using leaves from pepper (Capsicum annum L.) plants exposed to low temperature (8 °C) for different time periods (1 to 3 d), several key components of the metabolism o...

The phytopathogenic fungus Diplodia seriata, whose genome remains unsequenced, produces severe infections in fruit trees (fruit blight) and grapevines. In this crop is recognized as one of the most prominent pathogens involved in grapevine trunk disease (or grapevine decline). This pathology can result in the death of adult plants and therefore it...

MASCOT Search Results. Data (observed, expected and calculated mases, ppm and misscleavages) corresponding to those proteins identified by combined PMF and MS/MS search using MASCOT are indicated.

Cytoplasmic proteins identified by means of PRO-BLAST search. Fragmentation spectra obtained from cytoplasmic proteins after de novo sequencing using ProBLAST software and properly identified by BLAST similarity searching are showed.

Extracellular proteins identified by means of PRO-BLAST search. Fragmentation spectra obtained from secreted proteins after de novo sequencing by means of ProBLAST software and suitably identified by BLAST similarity searching are showed.

NADPH is an important molecule in the redox balance of the cell. Pepper fruits are the second worldwide consumable vegetables and exhibit different phenotypes after maturation. In this paper, two pepper cultivars were studied: Vergasa whose fruits shift from green to red after maturation, and Biela that shifts to yellow. Using fresh fruits from the...

Pepper Antioxidants: biochemical and molecular study of fruit ripening and response to abiotic stress (2006). PhD Thesis, University of Granada. ISBN: 84-33838-68-7 Legal Deposit: Gr 1121-2006. Research Advisers: José M. Palma Martínez and Francisco Javier corpas.

Pepper is a vegetable of importance in human nutrition. Currently, one of the most interesting properties of natural products is their antioxidant content. In this work, the purification and characterisation of peroxisomes from fruits of a higher plant was carried out, and their antioxidative enzymatic and non-enzymatic content was investigated. Gr...

The effect of growing five different cultivars of pepper plants (Capsicum annuum L.) with CdCl2 concentrations ranging from 0.125 to 0.5 mM on different physiological parameters, and antioxidative enzyme activities of leaves was studied. On the basis of growth parameters, pepper plants were relatively tolerant to cadmium, although metal concentrati...