Publications by authors named "Abraham Vidal Limon"

Farmed edible insects are considered a potential resource to help address food security concerns toward the year 2050. The sustainability (e.g.

View Article and Find Full Text PDF

Background: α-Amylase (α-AMY) and α-glucosidase (α-GLU) inhibitors are important for controlling postprandial hyperglycemia (PHG). Bixa orellana (annatto) reported inhibitory activity against these enzymes because of its bioactive compound content. However, an understanding of its inhibitory mechanisms and metabolic profile is necessary to establish its therapeutic potential.

View Article and Find Full Text PDF

Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an enzymopathy that affects approximately 500 million people worldwide. A great number of mutations in the gene have been described. However, three class A G6PD variants known as G6PD Tomah (C385R), G6PD Kangnam (C385G), and G6PD Madrid (C385W) have been reported to be clinically important due to their associations with severe clinical manifestations such as hemolytic anemia.

View Article and Find Full Text PDF

Postprandial hyperglycemia is a hallmark of diabetes, and inhibition of key carbohydrate digestion enzymes such as α-amylase (α-AMY) and α-glucosidase (α-GLU) is an effective therapeutic target. A potential unexplored source of inhibitory compounds of these enzymes is Brassica oleracea var. capitata L (BOCE).

View Article and Find Full Text PDF

The cloud forest (CF), a hugely biodiverse ecosystem, is a hotspot of unexplored plants with potential for discovering pharmacologically active compounds. Without sufficient ethnopharmacological information, developing strategies for rationally selecting plants for experimental studies is crucial. With this goal, a CF metabolites library was created, and a ligand-based virtual screening was conducted to identify molecules with potential hypoglycemic activity.

View Article and Find Full Text PDF

Bioactive peptides produced via enzymatic hydrolysis have been widely investigated for their dipeptidyl peptidase-IV (DPP-IV) inhibitory properties. However, the deficit of studies on fermentation as a means to produce DPP-IV inhibitory peptides prompted us to draw a comparative study on DPP-IV inhibitory peptides generated from cow, camel, goat, and sheep milk using probiotic fermentation. Further, peptide identification, in silico molecular interactions with DPP-IV, and ensemble docking were performed.

View Article and Find Full Text PDF

Food bioactive peptides are well recognized for their health benefits such as antimicrobial, antioxidant, and antihypertensive benefits, among others. Their drug-like behavior has led to their potential use in targeting skin-related aging factors like the inhibition of enzymes related with the skin-aging process. In this study, canary seed peptides (CSP) after simulated gastrointestinal digestion (<3 kDa) were fractioned by RP-HPLC and their enzyme-inhibition activity towards elastase and tyrosinase was evaluated in vitro.

View Article and Find Full Text PDF

Glucose-6-phosphate dehydrogenase (G6PD) deficiency, affecting an estimated 500 million people worldwide, is a genetic disorder that causes human enzymopathies. Biochemical and genetic studies have identified several variants that produce different ranges of phenotypes; thus, depending on its severity, this enzymopathy is classified from the mildest (Class IV) to the most severe (Class I). Therefore, understanding the correlation between the mutation sites of G6PD and the resulting phenotype greatly enhances the current knowledge of enzymopathies' phenotypic and genotypic heterogeneity, which will assist both clinical diagnoses and personalized treatments for patients with G6PD deficiency.

View Article and Find Full Text PDF

Giardiasis, which is caused by infection, is a relevant cause of morbidity and mortality worldwide. Because no vaccines are currently available to treat giardiasis, chemotherapeutic drugs are the main options for controlling infection. Evidence has shown that the nitro drug nitazoxanide (NTZ) is a commonly prescribed treatment for giardiasis; however, the mechanisms underlying NTZ's antigiardial activity are not well-understood.

View Article and Find Full Text PDF

This study investigates the enhancement of enzymatic catalytic performance by immobilizing laccase on various nanostructured mesoporous silica materials (SBA-15, MCF, and MSU-F). The activity of immobilized laccase was evaluated under different hydrothermal, pH, and solvent conditions, with laccase@MSU-F showing a three-fold increase in stability. Laccase immobilized on these materials demonstrated stability in a pH range of 4.

View Article and Find Full Text PDF

Cardiovascular diseases (CVDs) are the leading cause of death worldwide. Conventional antithrombotic therapy has reported hemorrhagic accidents. Ethnobotanical and scientific reports point to as an antithrombotic adjuvant.

View Article and Find Full Text PDF

Investigations into ACE inhibitory properties of probiotic fermented bovine, camel, goat, and sheep milk were performed and studied for two weeks of refrigerated storage. Results from the degree of proteolysis suggested higher susceptibility of goat milk proteins, followed by sheep and camel milk proteins, to the probiotic-mediated proteolysis. ACE-inhibitory properties displayed continuous decline in ACE-IC values for two weeks of refrigerated storage.

View Article and Find Full Text PDF

Controlling Rhipicephalus microplus is among the most significant challenges for livestock production worldwide. The indiscriminate use of acaricides stimulates the selection of resistant tick populations and is therefore ineffective. Understanding the molecular foundations of resistance could help inform the search for new alternatives for tick control.

View Article and Find Full Text PDF

Background: The amino acids R- and S-proline were used to synthesize novel neonicotinoid derivatives that, after being characterized by H, DEPTQ 135, and HRMS-QTOF, were evaluated for use as insecticides against Galleria mellonella (caterpillar), Sitophilus zeamais, Xylosandrus morigerus, Xyleborus affinis, and Xyleborus ferrugineus.

Results: Comparisons of biological activity and absolute configuration showed that the R enantiomer had excellent and outstanding insecticidal activity against the insects tested, with up to 100% mortality after 12 h compared with dinotefuran at the same concentration.

Conclusions: The results suggest that compound R6 is an excellent lead enantiopure insecticide for future development in the field of crop protection.

View Article and Find Full Text PDF

Most atypical antipsychotics derive from a high dropout of drug treatments due to adverse cardiometabolic side effects. These side effects are caused, in part, by the H1 receptor blockade. The current work sought a clozapine derivative with a reduced affinity for the H1 receptor while maintaining its therapeutic effect linked to D2 receptor binding.

View Article and Find Full Text PDF

Chia seed peptides (CSP) can be a source of multifunctional biopeptides to treat non-communicable diseases. However, interactions and binding affinity involved in targeting specific receptors remains unexplored. In this study, molecular simulation techniques were used as virtual screening of CSP to determine drug-like candidates using a multi-target-directed ligand approach.

View Article and Find Full Text PDF

tools, such as molecular docking, are widely applied to study interactions and binding affinity of biological activity of proteins and peptides. However, restricted sampling of both ligand and receptor conformations and use of approximated scoring functions can produce results that do not correlate with actual experimental binding affinities. Molecular dynamics simulations (MDS) can provide valuable information in deciphering functional mechanisms of proteins/peptides and other biomolecules, overcoming the rigid sampling limitations in docking analysis.

View Article and Find Full Text PDF

An extensive database of sterols and triterpenoids isolated from Ganoderma mushrooms was evaluated by in silico structure-based virtual screening to determine their respective ligand affinities for the glucocorticoid or mineralocorticoid receptor (GCR or MNR). The main ligands for GCR in our database were ergosta-7,22-dien-3-one (compound 1) and ganodermaside B (compound 2), while the best ligands for MNR were 2β,3α,9α-trihydroxyergosta-7,22-diene (compound 8) and 5α-ergosta-7,22-dien-3β-ol (compound 3). The binding free energy (BFE) values calculated for such metabolites were similar to those of the natural ligands for each receptor (i.

View Article and Find Full Text PDF

Androgen-dependent LNCaP and androgen-independent DU-145 cells, were treated with different concentrations of ergosterol (15 µM and 25 µM) and its respective cell viability was measured by MTT bioassay. While ergosterol showed an antiproliferative effect on LNCaP, on DU-145 promoted cell proliferation. This differential effect suggests that the effect of ergosterol might be related to its ability to act as an Androgen Receptor ligand.

View Article and Find Full Text PDF

The transmembrane glycoprotein mucin 1 (MUC1) is an attractive tumor marker for cancer therapy and diagnosis. The nine amino acid extracellular epitope APDTRPAPG of this protein is selectively recognized by the S2.2 single-stranded DNA anti-MUC1 aptamer, which has emerged as a promising template for designing novel targeting agents for MUC1-directed therapy.

View Article and Find Full Text PDF

, which causes Chagas disease, is a significant health threat in many countries and affects millions of people. Given the magnitude of this disease, a broader understanding of trypanocidal mechanisms is needed to prevent and treat infection. Natural endoperoxides, such as ergosterol peroxide, have been shown to be toxic to parasites without causing harm to human cells or tissues.

View Article and Find Full Text PDF

High-risk strains of human papillomavirus (HPV) have been identified as the etiologic agent of some anogenital tract, head, and neck cancers. Although prophylactic HPV vaccines have been approved; it is still necessary a drug-based treatment against the infection and its oncogenic effects. The E6 oncoprotein is one of the most studied therapeutic targets of HPV, it has been identified as a key factor in cell immortalization and tumor progression in HPV-positive cells.

View Article and Find Full Text PDF

Use of pesticides is usually related to overproduction of crops in order to overcome worldwide demand of food and alimentary safety. Nevertheless, pesticides are environmental persistent molecules, such as the organochlorine pesticides, which are often found in undesired places. In this work, we show that a hybrid nanomaterial (laccase-MSU-F) readily oxidizes the pesticide dichlorophen, reducing its acute genotoxicity and apoptotic effects.

View Article and Find Full Text PDF

Male sex hormones such as testosterone and dihydrotestosterone play important roles in several physiological and pathological processes. The biological activities of the aforementioned metabolites are mediated by the multidomain androgen receptor (AR), which is therefore a well-studied drug target. Ganoderma mushroom lanostanoid extracts have previously been shown to exert antiandrogenic activity; therefore, this work aims to identify which lanostane derivatives might act as selective ligands for AR.

View Article and Find Full Text PDF

The metabolism of vitamin D is a very important pathway involved in the regulation of sterols and maintenance of cell health. The physiological activity of the human hormone 1α,25-dihydroxyvitamin D3, or calcitriol, is mediated by the vitamin D receptor (VDR), an endocrine member of the nuclear receptor superfamily that inhibits cell growth and stimulates cell differentiation, suggesting a potential application in cancer chemoprevention. Since nonpolar extracts obtained from Ganoderma mushrooms have also been shown to exert an antiproliferative effect on several cancer cell lines, it was suggested that at least part of its activity might be mediated by VDR.

View Article and Find Full Text PDF