Tradition to Pathogenesis: A Novel Hypothesis for Elucidating the Pathogenesis of Diseases Based on the Traditional Use of Medicinal Plants

Proportion of Over-The-Counter Medicines Containing a Plant Component and Those with Synthetic Substances Administered among Children in a Bulgarian Population

Over-the-counter medicines are intended to influence a number of symptoms and also to cure some human diseases without having to see the doctor. These medicines are used for self-medication and parents also give them to their children. The following fall within the scope of over-the-counter medicines: analgesics, antipyretics, antihistamines, decongestants, gastroprotectors, anti-cough medicines, and others. Their composition also includes one or a combination of medicinal plants. In addition to synthetic substances, some nonprescription medicines contain plant substances and their derivatives. Medicinal plants and their extracted derivatives are applicable in the therapies of a number of diseases. Considering the fact that over-the-counter medicines can be used among children from birth, the subject of our study is those whose composition includes biologically active plant substances. Within this study, we have established the number of nonprescription medicines containing a plant substance individually or in combination with another substance of the same kind and/or other substances, which have been included in a list published on the website of the Bulgarian Drug Agency. The objective of our study is to present the percentage of OTC medicines containing a plant substance intended to affect the symptoms of upper respiratory tract diseases and pain, which are used among children during different periods of their development. Some of these medicines also contain substances such as antihistamines (pheniramine maleate) and decongestants (pseudoephedrine, phenylephrine hydrochloride, dimetidine) that can cause various unwanted side effects. Considering the aforementioned aspects and also the peculiarities of childhood, we recommend that self-treatment be conducted only after consulting a health specialist.

Antiviral foods in the battle against viral infections: Understanding the molecular mechanism

Viruses produce a variety of illnesses, which may also cause acute respiratory syndrome. All viral infections, including COVID-19, are associated with the strength of the immune system. Till now, traditional medicine or vaccines for most viral diseases have not been effective. Antiviral and immune-boosting diets may provide defense against viral diseases by lowering the risk of infection and assisting rapid recovery. The purpose of this review was to gather, analyze, and present data based on scientific evidence in order to provide an overview of the mechanistic insights of antiviral bioactive metabolites. We have covered a wide range of food with antiviral properties in this review, along with their potential mechanism of action against viral infections. Additionally, the opportunities and challenges of using antiviral food have been critically reviewed. Bioactive plant compounds, not only help in maintaining the body's normal physiological mechanism and good health but are also essential for improving the body's immunity and therefore can be effective against viral diseases. These agents fight viral diseases either by incorporating the body's defense mechanism or by enhancing the cell's immune system. Regular intake of antiviral foods may prevent future pandemic and consumption of these antiviral agents with traditional medicine may reduce the severity of viral diseases. Therefore, the synergistic effect of antiviral foods and medication needs to be investigated.

Identification of Novel Cannabinoid CB2 Receptor Agonists from Botanical Compounds and Preliminary Evaluation of Their Anti-Osteoporotic Effects

As cannabinoid CB2 receptors (CB2R) possess various pharmacological effects—including anti-epilepsy, analgesia, anti-inflammation, anti-fibrosis, and regulation of bone metabolism—without the psychoactive side effects induced by cannabinoid CB1R activation, they have become the focus of research and development of new target drugs in recent years. The present study was intended to (1) establish a double luciferase screening system for a CB2R modulator; (2) validate the agonistic activities of the screened compounds on CB2R by determining cAMP accumulation using HEK293 cells that are stably expressing CB2R; (3) predict the binding affinity between ligands and CB2 receptors and characterize the binding modes using molecular docking; (4) analyze the CB2 receptors–ligand complex stability, conformational behavior, and interaction using molecular dynamics; and (5) evaluate the regulatory effects of the screened compounds on bone metabolism in osteoblasts and osteoclasts. The results demonstrated that the screening system had good stability and was able to screen cannabinoid CB2R modulators from botanical compounds. Altogether, nine CB2R agonists were identified by screening from 69 botanical compounds, and these CB2R agonists exhibited remarkable inhibitory effects on cAMP accumulation and good affinity to CB2R, as evidenced by the molecular docking and molecular dynamics. Five of the nine CB2R agonists could stimulate osteoblastic bone formation and inhibit osteoclastic bone resorption. All these findings may provide useful clues for the development of novel anti-osteoporotic drugs and help elucidate the mechanism underlying the biological activities of CB2R agonists identified from the botanical materials.