RESUMEN
Cancer is a process involving cell mutation, increased proliferation, invasion, and metastasis. Over the years, this condition has represented one of the most concerning health problems worldwide due to its significant morbidity and mortality. At present, the incidence of cancer continues to grow exponentially. Thus, it is imperative to open new avenues in cancer research to understand the molecular changes driving DNA transformation, cell-to-cell interaction derangements, and immune system surveillance decay. In this regard, evidence supports the relationship between chronic inflammation and cancer. In light of this, a group of bioactive lipids derived from polyunsaturated fatty acids (PUFAs) may have a position as novel anti-inflammatory molecules known as the specialized pro-resolving mediators (SPMs), a group of pro-resolutive inflammation agents that could improve the anti-tumor immunity. These molecules have the potential role of chemopreventive and therapeutic agents for various cancer types, and their effects have been documented in the scientific literature. Thus, this review objective centers around understanding the effect of SPMs on carcinogenesis and their potential therapeutic effect.
Asunto(s)
Carcinogénesis , Inflamación , Humanos , Comunicación Celular , Vigilancia Inmunológica , LípidosRESUMEN
Durvillaea antarctica is the seaweed that is the most consumed by the Chilean population. It is recognized worldwide for its high nutritional value in protein, vitamins, minerals, and dietary fiber. This is a narrative review in which an extensive search of the literature was performed to establish the immunomodulator, cardiometabolic, and gut microbiota composition modulation effect of Durvillaea antarctica. Several studies have shown the potential of Durvillaea antarctica to function as prebiotics and to positively modulate the gut microbiota, which is related to anti-obesity, anti-inflammatory, anticancer, lipid-lowering, and hypoglycemic effects. The quantity of Bacteroides was negatively correlated with that of inflammatory monocytes and positively correlated with the levels of several gut metabolites. Seaweed-derived polysaccharides modulate the quantity and diversity of beneficial intestinal microbiota, decreasing phenol and p-cresol, which are related to intestinal diseases and the loss of intestinal function. Additionally, a beneficial metabolic effect related to this seaweed was observed, mainly promoting the decrease in the glycemic levels, lower cholesterol levels and cardiovascular risk. Consuming Durvillaea antarctica has a positive impact on the immune system, and its bioactive compounds provide beneficial effects on glycemic control and other metabolic parameters.
Asunto(s)
Enfermedades Cardiovasculares , Microbioma Gastrointestinal , Algas Marinas , Humanos , Prebióticos , Fibras de la Dieta/farmacología , Verduras , Enfermedades Cardiovasculares/prevención & controlRESUMEN
Bisphenol A (BPA) is a xenobiotic with endocrine disruptor properties which interacts with various receptors, eliciting a cellular response. In the plastic industry, BPA is widely used in the production of polycarbonate and epoxy-phenolic resins to provide elastic properties. It can be found in the lining of canned foods, certain plastic containers, thermal printing papers, composite dental fillings, and medical devices, among other things. Therefore, it is a compound that, directly or indirectly, is in daily contact with the human organism. BPA is postulated to be a factor responsible for the global epidemic of obesity and non-communicable chronic diseases, belonging to the obesogenic and diabetogenic group of compounds. Hence, this endocrine disruptor may be responsible for the development of metabolic disorders, promoting in fat cells an increase in proinflammatory pathways and upregulating the expression and release of certain cytokines, such as IL6, IL1ß, and TNFα. These, in turn, at a systemic and local level, are associated with a chronic low-grade inflammatory state, which allows the perpetuation of the typical physiological complications of obesity.
Asunto(s)
Disruptores Endocrinos , Humanos , Disruptores Endocrinos/toxicidad , Obesidad , Adipogénesis , Adipocitos , Compuestos de Bencidrilo/toxicidad , Tejido AdiposoRESUMEN
Cardiovascular 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.
Asunto(s)
Aterosclerosis , Enfermedades Cardiovasculares , Ácidos Grasos Omega-3 , Animales , Aterosclerosis/metabolismo , Enfermedades Cardiovasculares/tratamiento farmacológico , Ácidos Docosahexaenoicos/metabolismo , Ácidos Docosahexaenoicos/farmacología , Ácidos Docosahexaenoicos/uso terapéutico , Ácidos Grasos Omega-3/metabolismo , Ácidos Grasos Omega-3/farmacología , Ácidos Grasos Omega-3/uso terapéutico , Humanos , Inflamación/metabolismo , Mediadores de Inflamación/metabolismoRESUMEN
BACKGROUND: Visceral adiposity is related to insulin resistance (IR), a metabolic state considered as a risk factor for other cardiometabolic diseases. In that matter, mathematical indexes such as the visceral adiposity index (VAI) and the lipid accumulation product (LAP) could indirectly assess IR based on visceral adiposity. OBJECTIVE: To evaluate the association and diagnostic accuracy of VAI and LAP to diagnose IR in the adult population of Maracaibo city. METHODS: This is a cross-sectional descriptive study with multistage sampling. Receiver operating characteristic (ROC) curves were built to determine VAI and LAP cutoff points to predict IR. A set of logistic regression models was constructed according to sociodemographic, psychobiologic, and metabolic variables. RESULTS: 1818 subjects were evaluated (51.4% women). The area under the curve (AUC) values for LAP and VAI were 0.689 (0.665-0.714) and 0.645 (0.619-0.670), respectively. Both indexes showed a higher IR risk in the upper tertile in bivariate analysis. However, in the logistic regression analysis for the IR risk, only the 2nd (OR: 1.91; 95% CI: 1.37-2.65; p < 0.01) and 3rd (OR: 5.40; 95% CI: 3.48-8.39; p < 0.01) LAP tertiles showed a significant increase. This behaviour was also observed after adjusting for hs-C-reactive protein (hs-CPR). CONCLUSION: Although both indexes show a low predictive capacity in individuals with IR in the Maracaibo city population, the LAP index was more strongly associated with IR.
Asunto(s)
Resistencia a la Insulina , Producto de la Acumulación de Lípidos , Adiposidad , Adulto , Índice de Masa Corporal , Estudios Transversales , Femenino , Humanos , Grasa Intraabdominal , Masculino , VenezuelaRESUMEN
Metabolic 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.
Asunto(s)
Sistema Nervioso Central/patología , Síndrome Metabólico/patología , Ensayos Clínicos como Asunto , Disfunción Cognitiva/epidemiología , Disfunción Cognitiva/etiología , Disfunción Cognitiva/patología , Humanos , Síndrome Metabólico/complicaciones , Síndrome Metabólico/epidemiologíaRESUMEN
Diabetes mellitus (DM) is considered one of the most massive epidemics of the twenty-first century due to its high mortality rates caused mainly due to its complications; therefore, the early identification of such complications becomes a race against time to establish a prompt diagnosis. The research of complications of DM over the years has allowed the development of numerous alternatives for diagnosis. Among these emerge the quantification of advanced glycation end products (AGEs) given their increased levels due to chronic hyperglycemia, while also being related to the induction of different stress-associated cellular responses and proinflammatory mechanisms involved in the progression of chronic complications of DM. Additionally, the investigation for more valuable and safe techniques has led to developing a newer, noninvasive, and effective tool, termed skin fluorescence (SAF). Hence, this study aimed to establish an update about the molecular mechanisms induced by AGEs during the evolution of chronic complications of DM and describe the newer measurement techniques available, highlighting SAF as a possible tool to measure the risk of developing DM chronic complications.
Asunto(s)
Productos Finales de Glicación Avanzada , Hiperglucemia , Fluorescencia , Humanos , PielRESUMEN
Diabetes Mellitus (DM) is an inflammatory clinical entity with different mechanisms involved in its physiopathology. Among these, the dysfunction of the gut microbiota stands out. Currently, it is understood that lipid products derived from the gut microbiota are capable of interacting with cells from the immune system and have an immunomodulatory effect. In the presence of dysbiosis, the concentration of lipopolysaccharides (LPS) increases, favoring damage to the intestinal barrier. Furthermore, a pro-inflammatory environment prevails, and a state of insulin resistance and hyperglycemia is present. Conversely, during eubiosis, the production of short-chain fatty acids (SCFA) is fundamental for the maintenance of the integrity of the intestinal barrier as well as for immunogenic tolerance and appetite/satiety perception, leading to a protective effect. Additionally, it has been demonstrated that alterations or dysregulation of the gut microbiota can be reversed by modifying the eating habits of the patients or with the administration of prebiotics, probiotics, and symbiotics. Similarly, different studies have demonstrated that drugs like Metformin are capable of modifying the composition of the gut microbiota, promoting changes in the biosynthesis of LPS, and the metabolism of SCFA.
Asunto(s)
Diabetes Mellitus/microbiología , Ácidos Grasos Volátiles/metabolismo , Microbioma Gastrointestinal/fisiología , Sistema Inmunológico/microbiología , Lipopolisacáridos/biosíntesis , Disbiosis/inmunología , Humanos , Hiperglucemia/microbiología , Tolerancia Inmunológica , Inflamación , Resistencia a la Insulina/inmunología , Mucosa Intestinal/inmunología , Mucosa Intestinal/microbiología , Prebióticos/administración & dosificación , Probióticos/administración & dosificación , Simbióticos/administración & dosificaciónRESUMEN
Although novel pharmacological options for the treatment of type 2 diabetes mellitus (DM2) have been observed to modulate the functionality of several key organs in glucose homeostasis, successful regulation of insulin resistance (IR), body weight management, and pharmacological treatment of obesity remain notable problems in endocrinology. Leptin may be a pivotal player in this scenario, as an adipokine which centrally regulates appetite and energy balance. In obesity, excessive caloric intake promotes a low-grade inflammatory response, which leads to dysregulations in lipid storage and adipokine secretion. In turn, these entail alterations in leptin sensitivity, leptin transport across the blood-brain barrier and defects in post-receptor signaling. Furthermore, hypothalamic inflammation and endoplasmic reticulum stress may increase the expression of molecules which may disrupt leptin signaling. Abundant evidence has linked obesity and leptin resistance, which may precede or occur simultaneously to IR and DM2. Thus, leptin sensitivity may be a potential early therapeutic target that demands further preclinical and clinical research. Modulators of insulin sensitivity have been tested in animal models and small clinical trials with promising results, especially in combination with agents such as amylin and GLP-1 analogs, in particular, due to their central activity in the hypothalamus.
Asunto(s)
Diabetes Mellitus Tipo 2/metabolismo , Leptina/metabolismo , Obesidad/metabolismo , Animales , Humanos , Hipotálamo/efectos de los fármacos , Resistencia a la InsulinaRESUMEN
Existen fórmulas enterales específicas para mejorar el control glicémico en diabéticos; con carbohidratos cuya respuesta glicémica sería de interés indagar. Se determinó el efecto del consumo de una fórmula con carbohidratos de liberación prolongada sobre la respuesta glicémica e insulina post-prandial en 21 sujetos sanos; (11 hombres y 10 mujeres) entre (17 y 25 años), quienes consumieron en 2 ocasiones la fórmula enteral polimérica para diabéticos y el alimento de referencia (pan blanco), en una cantidad de 50 g de carbohidratos disponibles. La glicemia fue medida a los 0, 15, 30,45, 60, 75, 90, 105 y 120 min y las concentraciones de insulina en ayuno y a los 120 min. El área bajo la curva de glicemia fue calculada resultando más baja para la fórmula 11718,20. ± 1112,38 que para el pan blanco 13269,18 ± 1351,05, (p<0,001). El índice glicémico (IG) resultó intermedio (63,33±5,22), y más bajo al compararlo con los rangos de IG publicados para el alimento de referencia(80-96). Se produjo una menor concentración de glicemia posterior al consumo de la fórmula; sin incrementos en los requerimientos de insulina, presumiendo un uso adecuado en diabéticos y una respuesta de saciedad más prolongada. Este efecto y la hemoglobina glicosilada deberían estudiarse tras el consumo en períodos prolongados en sujetos con diabetes(AU)
There are specific formulas of enteral nutrition to improve glycemic control in diabetic patients containing different types of carbohydrates which glycemic response should be investigated. The consumption effect of a formula with carbohydrates with extended release was determined on the glycemic response and postprandial insulin in 21 healthy individuals (11 men and 10 women) from 17 to 25 years old, who consumed in two different time the polymeric enteral formula for diabetics and the reference food (white bread) in a quantity of 50 g of available carbohydrates. The glycemia was measured at 0, 15, 30, 45, 60, 75, 90, 105 and 120 min and the insulin concentrations in fasting and within 120 min. The area in the glycemic curve was measured being the lowest the formula 11718.20. ± 1112.38 than in white bread 13269.18 ± 1351.05 (P<0.001). The glycemic index (GI) resulted to be intermediate (63.33±5.22) and lower when compared to the GI ranks published for the reference food (80-96). A lower concentration of glycemia occurred after the consumption of the formula, without increments in the insulin requirements; thus, assuming an adequate use in diabetic and a more extended feeling of fullness. This effect and the glycated hemoglobin should be studied after the extended consumption in people with diabetes(AU)