Natural Products in Diabetes Mellitus: 3rd Edition

A special issue of Pharmaceuticals (ISSN 1424-8247). This special issue belongs to the section "Natural Products".

Deadline for manuscript submissions: 25 May 2026 | Viewed by 880

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Guest Editor
División de Estudios de Posgrado, C.A. Bioingeniería Básicay Aplicada, Facultad de Ingeniería, Universidad Autónoma de Querétaro, C. U. Cerro de las Campanas, Querétaro 76010, Mexico
Interests: nutraceuticals; secondary metabolite; prebiotics; value added
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Special Issue Information

Dear Colleagues,

Diabetes mellitus (DM) is a chronic disease characterized by a state of hyperglycemia. This sustained increase in glucose levels induces oxidative damage, which can contribute in different ways to the development of chronic complications. Such complications have been directly or indirectly related to the high morbidity and mortality of DM. The increase in the prevalence of this disease is more marked in developing countries, although it does not exclude developed countries. Additionally, this disease represents a high cost to the health sector and to the patient. The prevention and control of DM consists of physical activity and diet modification. However, various natural products are used worldwide to aid in the control and prevention of DM.

Natural products come from various sources, such as plants, foods, and microorganisms. They possess or generate bioactive compounds that may have antidiabetic activity, for which the mechanisms of action are diverse and range from the inhibition of enzymes such as alpha-amylase and alpha-glucosidase to the modification of hormonal activities involved in glucose homeostasis. Additionally, natural products can present diverse biological activities that can contribute to or generate synergy in the control and prevention of the predominant complications in DM, by reducing oxidative stress resulting from the increase in free radicals due to the high content of glucose in the blood. Therefore, natural products can contribute to antioxidant enzymatic activity.

However, the use of these natural products is generally part of traditional medicine, so there is not always information to support their use, dosage, toxicity, etc.

The study of the mechanisms of action of various natural products, either in isolation as an active substance or in a more complex form as an extract or in its natural state, is of interest since it provides knowledge for the development of therapeutic agents and adjuvant therapies for DM, in addition to generating information on dosage, toxicity, mechanisms of action, synergistic and/or antagonistic activity, etc.

For this Special Issue, we invite the submission of original contributions, reviews or short communications that contribute to the knowledge of natural products and their antidiabetic action, including either in vivo or in vitro models, therapeutic models, the characterization of compounds and extracts, and mechanisms of action.

Dr. Ana Angelica Feregrino-Perez
Guest Editor

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Keywords

  • natural products
  • hypoglycemia
  • phenolic compounds
  • diabetes mellitus
  • therapeutic
  • ROS

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Published Papers (1 paper)

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Research

12 pages, 963 KB  
Article
How Astragalin Modulates Glucose Uptake and Insulin Secretion in β-Cell Lines
by Paola Miranda Sulis, Alice Lima Rosa Mendes, Paula Waiss Zanusso Bunick, Karina Cesca, Carine Royer, Bruna Antunes Zaniboni, Fernanda Carvalho Cavalari, Guilherme Brasil Pintarelli, André Luiz Andreotti Dagostin and Fátima Regina Mena Barreto Silva
Pharmaceuticals 2026, 19(3), 508; https://doi.org/10.3390/ph19030508 - 20 Mar 2026
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Abstract
Background/Objectives: Type 2 diabetes mellitus (T2DM) is characterized by chronic hyperglycemia and insulin resistance, leading to progressive metabolic dysfunction. Flavonoids, such as astragalin, have reported antidiabetic potential; however, their direct effects on pancreatic β-cell ionic mechanisms and insulin secretion remain unclear. This [...] Read more.
Background/Objectives: Type 2 diabetes mellitus (T2DM) is characterized by chronic hyperglycemia and insulin resistance, leading to progressive metabolic dysfunction. Flavonoids, such as astragalin, have reported antidiabetic potential; however, their direct effects on pancreatic β-cell ionic mechanisms and insulin secretion remain unclear. This study aimed to investigate the effects of astragalin on glucose uptake, insulin secretion, and membrane ionic currents in pancreatic β-cell lines. Methods: Murine MIN6 and rat INS-1 pancreatic β-cells were used as experimental models. Following astragalin treatment, glucose uptake was quantified by bioluminescence, and insulin secretion was measured by ELISA. Ionic currents were analyzed using the whole-cell patch-clamp technique. Selective pharmacological blockers targeting ATP-sensitive K+ channels (KATP), voltage-dependent K+ channels (Kv), and L-type voltage-dependent Ca2+ channels were applied to elucidate the underlying mechanisms. Results: Astragalin increased glucose uptake in a time-dependent manner, reaching a plateau between 3 and 5 h. Insulin secretion was significantly enhanced after 1 h of exposure to 100 µM astragalin. Patch-clamp recordings demonstrated that astragalin reduced potassium channel currents in pancreatic β-cells. Pharmacological modulation confirmed the involvement of KATP, Kv, and L-type Ca2+ channels. Verapamil attenuated the insulinotropic effect, supporting the role of calcium influx in astragalin-induced insulin exocytosis. Conclusions: Astragalin enhances glucose uptake and stimulates insulin secretion in pancreatic β-cells through modulation of potassium and calcium channels, promoting calcium-dependent exocytosis. These findings support its potential as a candidate for antidiabetic therapeutic strategies. Full article
(This article belongs to the Special Issue Natural Products in Diabetes Mellitus: 3rd Edition)
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