Examinando por Autor "Pirela, Daniela"
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Ítem Metabolic Syndrome: Is It Time to Add the Central Nervous System?(MDPI, 2021-06) Rojas, Milagros; Chávez-Castillo, Mervin; Pirela, Daniela; Parra, Heliana; Nava, Manuel; Chacín, Maricarmen; Angarita, Lissé; Añez, Roberto; Salazar, Juan; Ortiz, Rina; Durán Agüero, Samuel; Gravini-Donado, Marbel; Bermúdez, Valmore; Díaz-Camargo, EdgarMetabolic syndrome (MS) is a set of cardio-metabolic risk factors that includes central obesity, hyperglycemia, hypertension, and dyslipidemias. The syndrome affects 25% of adults worldwide. The definition of MS has evolved over the last 80 years, with various classification systems and criteria, whose limitations and benefits are currently the subject of some controversy. Likewise, hypotheses regarding the etiology of MS add more confusion from clinical and epidemiological points of view. The leading suggestion for the pathophysiology of MS is insulin resistance (IR). IR can affect multiple tissues and organs, from the classic “triumvirate” (myocyte, adipocyte, and hepatocyte) to possible effects on organs considered more recently, such as the central nervous system (CNS). Mild cognitive impairment (MCI) and Alzheimer’s disease (AD) may be clinical expressions of CNS involvement. However, the association between MCI and MS is not understood. The bidirectional relationship that seems to exist between these factors raises the questions of which phenomenon occurs first and whether MCI can be a precursor of MS. This review explores shared pathophysiological mechanisms between MCI and MS and establishes a hypothesis of a possible MCI role in the development of IR and the appearance of MS.Ítem Probiotics and Gut Microbiota in Obesity: Myths and realities of a New Health Revolution(MDPI, 2022) León Aguilera, Xavier Eugenio; Manzano, Alexander; Pirela, Daniela; Bermúdez, ValmoreObesity and its comorbidities are humans’ most prevalent cardio-metabolic diseases worldwide. Recent evidence has shown that chronic low-grade inflammation is a common feature in all highly prevalent chronic degenerative diseases. In this sense, the gut microbiota is a complete ecosystem involved in different processes like vitamin synthesis, metabolism regulation, and both appetite and immune system control. Thus, dysbiosis has been recognised as one of the many factors associated with obesity due to a predominance of Firmicutes, a decrease in Bifidobacterium in the gut, and a consequent short-chain fatty acids (SCFA) synthesis reduction leading to a reduction in incretins action and intestinal permeability increase. In this context, bacteria, bacterial endotoxins, and toxic bacterial by-products are translocated to the bloodstream, leading to systemic inflammation. This review focuses on gut microbiota composition and its role in obesity, as well as probiotics and prebiotics benefits in obesity.Ítem Specialized Proresolving Lipid Mediators: A Potential Therapeutic Target for Atherosclerosis(MDPI, 2022) Salazar, Juan; Pirela, Daniela; Nava, Manuel; Castro, Ana; Angarita, Lissé; Parra, Heliana; Durán-Agüero, Samuel; Rojas-Gómez, Diana Marcela; Galbán, Néstor; Añez, Roberto; Chacín, Maricarmen; Diaz, Andrea; Villasmil, Nelson; Bautista De Sanctis, Juan; Bermúdez, ValmoreCardiovascular disease (CVD) is a global public health issue due to its high morbidity, mortality, and economic impact. The implementation of innovative therapeutic alternatives for CVD is urgently required. Specialized proresolving lipid mediators (SPMs) are bioactive compounds derived from ω-3 and ω-6 fatty acids, integrated into four families: Lipoxins, Resolvins, Protectins, and Maresins. SPMs have generated interest in recent years due to their ability to promote the resolution of inflammation associated with the pathogeneses of numerous illnesses, particularly CVD. Several preclinical studies in animal models have evidenced their ability to decrease the progression of atherosclerosis, intimal hyperplasia, and reperfusion injury via diverse mechanisms. Large-scale clinical trials are required to determine the effects of SPMs in humans. This review integrates the currently available knowledge of the therapeutic impact of SPMs in CVD from preclinical and clinical studies, along with the implicated molecular pathways. In vitro results have been promising, and as such, SPMs could soon represent a new therapeutic alternative for CVD.