Secondary metabolites derived from plants have demonstrated significant biological activity and hold both edible and medicinal significance. These compounds play a crucial role in the development of pharmaceuticals, particularly in the context of inflammatory disorders and chronic diseases associated with oxidative stress. The objective of this study was to investigate the chemical characterization, antioxidant potential, and antibacterial properties of the aqueous extract of Anacyclus pyrethrum (AEAP). To achieve this, we employed various analytical techniques including HPLC–ESI–MS/MS, Fourier transform infrared, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The antioxidant activity of the AEAP was assessed using DPPH (2,2-Diphenyl-1-picrylhydrazyl) and reducing power assays, while antibacterial activity was evaluated against both Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive bacteria (Staphylococcus aureus and Enterococcus faecium) using the broth microdilution assay. Our findings demonstrated significant antioxidant activity of the AEAP, as well as broad-spectrum antibacterial activity against both Gram-positive and Gram-negative bacteria. HPLC analysis identified important bioactive compounds, notably pellitorine and 3,4-dihydroxybenzoic acid, known for their antioxidant and antibacterial properties. Overall, the AEAP demonstrated potent antioxidant and antibacterial activities, suggesting its potential as a valuable natural source of bioactive compounds with various therapeutic applications.

The use of illicit substances continues to pose a substantial threat to global health, affecting millions of individuals annually. Evidence suggests the existence of a ‘brain–gut axis’ as the involving connection between the central nervous system and gut microbiome (GM). Dysbiosis of the GM has been associated with the pathogenesis of various chronic diseases, including metabolic, malignant, and inflammatory conditions. However, little is currently known about the involvement of this axis in modulating the GM in response to psychoactive substances. In this study, we investigated the effect of MDMA (3,4-methylenedioxymethamphetamine, “Ecstasy”)-dependence on the behavioral and biochemical responses, and the diversity and abundance of the gut microbiome in rats post-treated (or not) with aqueous extract of Anacyclus pyrethrum (AEAP), which has been reported to exhibit anticonvulsant activity. The dependency was validated using the conditioned place preference (CPP) paradigm, behavioral, and biochemical tests, while the gut microbiota was identified using matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI-TOF MS). The CPP and behavioral tests confirmed the presence of MDMA withdrawal syndrome. Interestingly, treatment with AEAP led to a compositional shift in the GM compared to the MDMA-treated rats. Specifically, the AEAP group yielded a higher relative abundance of Lactobacillus and Bifidobacter, while animals receiving MDMA had higher levels of E. coli. These findings suggest that A. pyrethrum therapy may directly modulate the gut microbiome, highlighting a potential target for regulating and treating substance use disorders.

Arthritis and inflammatory conditions require effective therapies, but conventional drugs have side effects. This study explored Cannabis sativa L. essential oil (CSEO) as a safer alternative. A chemical characterization of EO conducted via GC/MS showed the presence of sesquiterpene hydrocarbons (67.63%), oxygenated sesquiterpenes (25.91%), and oxygenated monoterpenes (0.99%). The study used three established inflammation induction tests: xylene-induced ear swelling, carrageenan-induced paw inflammation, and inflammation in the paw induced by Freund’s complete adjuvant (CFA). Xylene triggered acute inflammation in the ear, while carrageenan-induced acute inflammatory responses through edema and immune-cell recruitment in the paw. CFA-induced arthritis simulated chronic inflammatory conditions. The obtained results demonstrated that treatment with CSEO significantly reduced ear weight in the xylene-induced ear-swelling test, indicating potential inhibition of neutrophil accumulation. In the carrageenan-induced paw inflammation test, CSEO reduced paw volume, suggesting interference with edema formation and leukocyte migration. In the CFA-induced paw inflammation test, CSEO decreased contralateral paw volume, restored body weight, and reduced C-reactive protein levels. Conclusion: this study provides compelling evidence supporting the antiarthritic and anti-inflammatory effects of CSEO. The findings indicate the therapeutic value of EO in the management of arthritis and inflammatory diseases while highlighting the need for further in-depth research to study the molecular mechanisms and validate their safety and efficacy for clinical applications. Preliminary data from this study suggests encouraging prospects for advancing the treatment and prevention of inflammation.

This study aims to investigate the analgesic, anti-inflammatory, and antioxidant effects of the hydroalcoholic extract of Astragalus ibrahimianus, an endemic plant of Morocco. The analgesic effect was tested using the hot plate, writhing, and formalin tests. The anti-inflammatory activity was assessed by carrageenan and xylene-induced paw/ear edema respectively. The antioxidant activity was evaluated by three tests, namely DPPH, reducing power, and iron chelation. A. ibrahimianus treatment resulted in a significant reduction in carrageenan-induced paw edema and xylene-induced ear edema. Acute pretreatment with the extract reduced the number of abdominal cramps induced by acetic acid injection, increased paw withdrawal latency in the hot plate test, and suppressed both phases of the formalin test. The extract showed significant antioxidant activity regarding the standard molecules. In conclusion, A. ibrahimianus has analgesic, anti-inflammatory, and antioxidant properties.

Adolescence is a phase characterized by reckless and risky behaviors, including the initiation and use of various illicit substances such as cannabis and alcohol. When ingested or administered, these substances affect mental processes by delivering pleasure, inner peace, and satisfaction. The aim of this study was to determine the prevalence and associated factors of psychoactive substance (PAS) use among adolescents. A cross-sectional study was conducted, including 300 participants surveyed using a structured questionnaire. Data were collected using the Mediterranean School Survey Project on Alcohol and Other Drugs (MedSPAD) to assess substance use, the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) to diagnose substance use disorders (SUDs), and the Early Trauma Inventory Self-Report Short Form (ETISR-SF) to identify childhood maltreatment, as well as socio-demographic characteristics. During the study period, 300 secondary school students participated. Their mean age was 17.92 ± 1.40 years, ranging from 15 to 22. There were slightly more males (56.7%) than females. A total of 40.67% of participants admitted to using at least one PAS at least once, while the prevalence of current use was 26%. Tobacco was the most commonly used substance (22.1%), followed by cannabis (7.33%). According to the DSM-5, 40.2% of users met the criteria for severe addiction. Factors associated with PAS use included the father’s level of education; place of use (e.g., home); poor relationships with parents, siblings, and teachers; and childhood maltreatment. Psychoactive substance use was found to be prevalent among adolescents in this study.

Secondary metabolites, bioactive compounds from plants, fungi, and microorganisms, show significant therapeutic potential for neurodegenerative and inflammatory diseases. This chapter highlights their mechanisms of action, including antioxidant activity, modulation of inflammatory pathways, and neuroprotection, supported by preclinical and clinical evidence. Key classes like alkaloids, flavonoids, terpenoids, and polyphenols are explored for their neuroprotective and anti-inflammatory properties, alongside phytochemical sources that emphasize their drug discovery potential. However, challenges such as limited bioavailability, stability, and toxicity hinder their clinical application. Addressing these issues through novel strategies could unlock their full potential in modern medicine. This chapter bridges natural product chemistry and clinical applications, providing insights to inspire further research into secondary metabolites as essential tools for combating complex diseases.