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Natural Products Journal, The - Current Issue
Volume 15, Issue 3, 2025
- Chemistry, Organic Chemistry, Medicinal Chemistry
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A Systemic Review of Pre-clinical Studies of Herbal Plants having Anti-Polycystic Ovarian Syndrome Activity: A PAN-India Study
BackgroundPolycystic ovarian syndrome (PCOS) is a prevalent endocrine and metabolic condition seen in premenopausal women. A number of pharmacological agents like metformin, oral contraceptives, and anti-androgen agents have been used to treat PCOS and its associated implications, but it has been associated with numerous negative effects like fatal and nonfatal lactic acidosis, weight gain, cardiovascular, and hepatic toxicity.
MethodologyThis study considered the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guideline where a vast number of article sources from different scientific databases like Google Scholar (https://scholar.google.com/), PubMed (https://pubmed.ncbi.nlm.nih.gov/), and Web of Science (https://mjl.clarivate.com/search-results) were screened out.
ResultsFrom a total of 154 studies, 24 studies were screened out following the inclusion and exclusion criteria, which reported 24 different plants that were used against PCOS preclinically. Details of various plants used, including their respective families, plant parts utilized, extraction methods employed, formulations developed, animal models of polycystic ovary syndrome (PCOS) utilized, and the geographical locations within India where the research has been conducted are all documented.
ConclusionThis systematic review is the first in India to report the pre-clinical studies of medicinal plants against PCOS, and it provides a thorough summary of the application of medicinal plants for the management of PCOS. Nonetheless, molecular level investigations on the plants utilized, their bioactive phytoconstituent responsible for the anti-PCOS activity, the probable mechanism of action and the pathway through which they conserve their effect, the effective dose, and the potential adverse effects are the need of time.
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Cytotoxic Secondary Metabolites from the Ascomycetous Fungus Pseudogymnoascus roseus
Authors: Jie Lin, Yingchao He, Ruofei Weng, Jingru Jiao, Peixin Zheng, Qun Dai and Ling LiuBackgroundFungi found in unique and competitive environments are abundant in bioactive compounds.
ObjectiveThe objective of this study is to isolate and identify secondary metabolites from fungi of unique ecological niches and evaluate their cytotoxicity.
MethodsThe compounds were isolated and purified using silica gel column chromatography, Sephadex LH-20 gel chromatography, and semi-preparative high-performance liquid chromatography (HPLC). The structures of the isolated compounds were determined using NMR and MS. The cytotoxic activities of these compounds were tested by the MTS assay.
ResultsThree diphenyl ethers, dechlorodihydromaldoxin (1), violaceol-I (2) and violaceol-II (3), one quinolinone compound, 2-(2-heptenyl)-3-methyl-4(1H)-quinolinone (4), and one α-pyrone nafuredin (5) were isolated from the fermented extracts of Pseudogymnoascus roseus S161. Compound 1 showed modest cytotoxicity against two human tumor cell lines A549 and MCF-7, with IC50 values of 87.12 and 51.07 μM, respectively.
ConclusionFive compounds were isolated from the fungus P. roseus S161. Compound 1 showed moderate cytotoxicity. This study provided a basis for the development of antitumor drugs.
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Role of Polyphenols to Attenuate Depressive Disorders and Cognitive Impairments Associated with Diabetes Mellitus – A Comprehensive Review
Authors: Sejuti Ray Chowdhury, Sourav Ghosh, Monosiz Rahaman and Srabona DuttaDiabetes Mellitus and its associated brain disorders become more prevalent across the globe. Several comorbidity factors are associated with diabetic mellitus as well as the nervous system. Static molecular variations in the Central Nervous System (CNS) due to Hyperglycemia may be a major cause of psychiatric disorders. Carbohydrates and proteins imbalance as metabolic parameters impact the downregulation of neurotransmitters in the brain region. Glucose metabolism has a key role in brain physiology as well as in neuro-energetics, transmission, and defensive mechanisms of the brain. Several studies revealed that CNS-acting medications overstated the glucose homeostasis associated with brain functioning as well as pharmacological effects. Polyphenols are an assembly of plant-derived composites with anti-inflammatory properties working on the inflammatory markers as well as antioxidant possessions that decrease the oxidative stress that is accompanied by a low pervasiveness of metabolic conditions categorized by insulin resistance. Those Natural products influenced the molecular signaling pathway, which is directly related to depression, cognitive impairment and neurotransmission. Currently, there are not any exact pharmacotherapies accessible for CNS form-induced diabetes. However, around some prebiotics, probiotics with natural remedies show promise in treating these central nervous system difficulties. Consequently, proof-based research concluded the translational study with a clinical setting understanding the connotation among brain glucose homeostasis and central nervous system complications is warranted, and the progress of pharmacologically dynamic therapy for active treatment of comorbidities diseases related to diabetes mellitus.
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Advancements in Chemical Proteomics for Target Identification of Natural Products in Live Cells
Natural products have evolved to interact with specific protein targets within cells, making them valuable for various biological functions. Chemical proteomics, specifically the use of covalently linked probes in live cells, allows for the identification of protein-binding partners or targets of small molecules. Recent advancements in target identification of natural products have utilized affinity-based probes and photo-affinity labeling techniques, enabling the capture of potential cellular targets even when the interaction is reversible. This knowledge can aid in understanding molecular pathways and developing new therapeutics for diseases lacking treatment options. Several methods, including DARTS, SPROX, CETSA, TPP, and bioinformatics-based analysis, are employed for target identification of label-free natural products. Chemical probe design and synthesis are tailored to screen targets of molecules with diverse structures. The comprehensive proteomic analysis reported herein aims to investigate target sites contributing to biologically significant effects, considering both desirable phenotypes and potential toxicity or side effects.
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A Comprehensive Review of n-butylidenephthalide: The Potential Therapeutic Effect and Possibility for Targeted Therapy
Authors: Swati, Kangkan Sarma, Ruchi Bhardwaj, Laxita Chauhan, Ritika Sharma and Payel Maln-Butylidene phthalide (N-BP) is a natural derivative obtained from the chloroform extract of Angelica Sinensis. In conventional medicine, it treats different ailments. Various pharmacological properties are associated with it, including anticancer, anti-inflammatory, and neuroprotective properties. Based on its reported pharmacokinetic profile, n-BP has low oral bioavailability and is rapidly absorbed and eliminated from the body. The compound has diverse pharmacological effects with lower stability, bioavailability, rapid absorption, and elimination. Furthermore, a targeted drug delivery system using a nanocarrier can improve pharmacokinetic-molecular profiling, specificity, efficacy, personal approach, and drug resistance. This review summarizes and emphasizes the pharmacokinetics, and pharmacology of n-butylidene phthalide, and the molecular targeting approach to treat cancer, inflammation, Parkinsonism, excitotoxicity, and Alzheimer’s.
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- Chemistry, Organic Chemistry, Medicinal Chemistry
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Potential Herbal Therapy in Dermatology: A Review of Malaysian Medicinal Plants
Authors: Nuraina Izzati Zulkepli and Nurul Izzati OsmanDermatology is a medical aspect that revolves around the diseases of the skin. The incorporation of medicinal plants in the treatment of skin diseases has been widely used since ancient days. Malaysia is blessed with various plant species and rich biodiversity with tropical weather year-round. With the emerging use of medicinal plants in dermatology, more studies on their potential therapeutic effects need to be reviewed thoroughly. Thus, the purpose of this work is to critically review relevant publications on related pharmacological activities and potential use of Malaysian plants for dermatological purposes. The articles that were found related to the research field were retrieved from several online databases like PubMed, Google Scholar, Scopus, Hindawi, and ScienceDirect published from 2016 to 2022. The pharmacological activities that were commonly associated with the treatment of skin diseases include anti-inflammatory, antioxidant, antibacterial, and wound healing. Various phytochemical compounds such as flavonoids, alkaloids, phenols, tannins, and vitamins were found to contribute to the therapeutic potential of plant extracts against skin diseases. In conclusion, the understanding of the plant’s pharmacological activities is important to evaluate its therapeutic potential to be used against specific skin diseases. More reliable references are required to ensure safety and efficacy of medicinal plants in dermatology.
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Add-on Therapy with Melatonin in the Acute Bipolar Mania Treatment: Results of a Randomized, Placebo-controlled Trial
Background and ObjectivePrior research indicates that disruptions in melatonin secretion levels and timing could be linked to the pathophysiology of bipolar disorder. Our study aimed to assess the effectiveness of melatonin as an adjunctive therapy to classical mood stabilizers in addressing sleep impairment and mood symptoms in bipolar patients currently experiencing manic episodes.
MethodsFifty-eight hospitalized patients, with a mean age of 38.04 ± 11.03, experiencing an acute manic episode and receiving valproate sodium treatment for one week were randomly assigned to either the melatonin group or the placebo group. Both melatonin and a matched placebo were initiated at a dosage of 3 mg/day at bedtime for the first week and increased to 6 mg/day for the subsequent three weeks. The primary efficacy endpoint focused on evaluating the severity of manic symptoms using the Young Mania Rating Scale (YMRS) at enrollment and at weeks 1, 2, and 4 post-interventions. Additionally, as a secondary efficacy endpoint, the change in insomnia severity was assessed at the end of the study period using the Insomnia Severity Index (ISI) questionnaire.
ResultsAnalyses were conducted on an Intention-to-Treat (ITT) analysis dataset. Despite a significant decrease in mean Young Mania Rating Scale (YMRS) scores over the four-week study period in both treatment groups, melatonin exhibited a notably higher improvement in manic symptoms compared to the placebo (p-value ≤ 0.001). By the end of week 4, patients receiving a placebo demonstrated a mean ± SD decrease in YMRS scores of -17.3 ± 4.75, while those treated with melatonin experienced a significantly more reduction, with a mean ± SD of -21.06 ± 5.92 (p-value = 0.012). The proportion of responders, defined as patients with a ≥ 50% reduction in YMRS total score, and remitters, defined as those with an endpoint YMRS score ≤12, was also significantly higher in the melatonin-treated group compared to the placebo group. Furthermore, at the study endpoint, the melatonin group experienced a greater reduction in the mean ISI score compared to the placebo group (11.51 ± 3.07 versus 8.97 ± 3.56; p-value < 0.001). Importantly, melatonin was well tolerated by the study patients at this dosage.
ConclusionIn summary, our study findings provide support for the use of melatonin as an adjunctive therapy in the treatment of acute bipolar mania. The positive outcomes observed warrant further investigations to replicate and extend these findings, contributing to a more comprehensive understanding of melatonin's role in managing bipolar disorder during manic episodes.
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A Systematic Review on the Evolution of Natural Mutation-dependent Antiviral Drug Resistance in Hepatitis C Virus (HCV) Genotypes Prevalent in Saudi Arabia: A Genomic and Therapeutic Perspective
More LessBackgroundThe characterization of resistance-associated amino acid substitution (RAAS) in direct-acting antivirals (DAA) molecular targets could reshape the treatment strategy for HCV infection. Hence, this review aimed to provide evidence on the impact of the RAASs on DAA treatment for HCV.
MethodsPRISMA model was followed for the literature survey and evaluation (sources: PubMed, Sci-Hub, and Google Scholar). RAASs in DAA target proteins and their locations were mapped on 3-D proteins using two reference protein sequences: NS3/ID: AAA72945.1 and NS5A/NS5B/ID: NP_671491.1. NCBI-Basic Local Alignment Tool, UniProt and AlphaFold2/MMSeqs2, PyMol, and R-base/R-studio were used for alignment, retrieval of protein sequences, 3-D protein structure modeling, visualization of locations of RAASs, and diagrammatic representations, respectively.
ResultsGenotype 4 afterwards genotype 1 was the most prevalent in Saudi Arabia. L2003M, Y2065N, M2000T, L2003V, and Q2002H RAASs were anti-NS5A inhibitor. NS5A-Q2002H was anti-daclatasvir in genotype 4. NS5A-Y2065H and NS5B-S2702T in genotype 1 were anti-sofosbuvir-resistant. NS3-A1182V, NS3-Q1106K/R, and NS3-T1080S RAASs exhibited resistance to double antivirals. NS3-D1194A RAAS was a multi-drug resistant variant (against 3 DAAs). NS3- V1062A, NS3-D1194G, NS3-D1194E/T, NS3- S1148R, NS3-V1196A, NS3-V1062LNS3-S1148A, and NS3-S1148G RAASs in genotype 1 were single drug-resistant variants. NS3- S1148R and NS3-S1148A in genotypes 2 and 5 were anti-simeprevir-resistant variants.
ConclusionsAn array of identified RAASs, RAAS-dependent DAA treatment failure, and recommended combination DAA therapy in such clinical scenarios of RAASs are the significant outcomes of this research. RAAS-linked in vitro and in vivo resistance profiling at genotype/sub-genotype level will be crucial in treatment choice and for future DAA design strategies.
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Revolutionizing Plant Tissue Culture: Harnessing Artificial Intelligence for Precision Propagation and Optimization
Authors: Preeti Kaushik, Madhu Rani, Neha Khurana, Parijat Pandey, Payal and Sonia KapoorPlant tissue culture is a process of in vitro regeneration requiring numerous resources and intensive labour to mass produce disease-free clones. Diverse factors such as sterilizing agents, media composition, and environmental conditions contribute toward successful regeneration and decide the production, such as the total shoot number, shoot length, in vitro rooting, and adaptation of plants to the external environment. Plant tissue culture, the successful induction of rapid shoot production, and subsequent root formation in plants are influenced by the utilization of appropriate growing conditions customized to each specific explant type. By carefully manipulating environmental factors, such as temperature, light, and nutrient availability, it is possible to stimulate the growth and development of new shoots in a time-efficient manner. This strategic combination of optimal growing conditions and hormone supplementation holds great promise in the domain of efficient propagation of plants through tissue culture techniques. The recent progress in artificial techniques such as artificial neural networks (ANN) and machine learning (ML) algorithms has presented promising opportunities for the development of sustainable and precise plant tissue culture processes. These techniques are widely recognized as robust techniques for assessing outcomes and enhancing the accuracy of predicting outputs in the domain of plant tissue culture. AI techniques and optimization algorithms have been applied to predict and optimize callogenesis, embryogenesis, several shoots, shoot length, hairy root culture, in vitro rooting, and plant acclimatization by helping predict sterilizing conditions, optimal culture conditions, and formulation of a suitable medium. Patents, modeling, and formulation of each stage of plant tissue culture using tools like artificial neural networks (ANNs), neuro-fuzzy logic, support vector machines (SVMs), decision trees (DT), random forests (FR), and genetic algorithms (GA) are presented.
ConclusionIn this article, the current state of Artificial Intelligence (AI) algorithms, including their applications in all elements of plant tissue culture, as well as the patents that have been gained for these algorithms, are dissected in great detail.
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