Effect of Solvents on Phytochemicals Content and Antioxidant Activity of Ganoderma lucidum

Narrative Review: Bioactive Potential of Various Mushrooms as the Treasure of Versatile Therapeutic Natural Product

Mushrooms have remained an eternal part of traditional cuisines due to their beneficial health potential and have long been recognized as a folk medicine for their broad spectrum of nutraceuticals, as well as therapeutic and prophylactic uses. Nowadays, they have been extensively investigated to explain the chemical nature and mechanisms of action of their biomedicine and nutraceuticals capacity. Mushrooms belong to the astounding dominion of Fungi and are known as a macrofungus. Significant health benefits of mushrooms, including antiviral, antibacterial, anti-parasitic, antifungal, wound healing, anticancer, immunomodulating, antioxidant, radical scavenging, detoxification, hepatoprotective cardiovascular, anti-hypercholesterolemia, and anti-diabetic effects, etc., have been reported around the globe and have attracted significant interests of its further exploration in commercial sectors. They can function as functional foods, help in the treatment and therapeutic interventions of sub-optimal health states, and prevent some consequences of life-threatening diseases. Mushrooms mainly contained low and high molecular weight polysaccharides, fatty acids, lectins, and glucans responsible for their therapeutic action. Due to the large varieties of mushrooms present, it becomes challenging to identify chemical components present in them and their beneficial action. This article highlights such therapeutic activities with their active ingredients for mushrooms.

Ganoderma lucidum: A potential source to surmount viral infections through β-glucans immunomodulatory and triterpenoids antiviral properties

Ganoderma lucidum (G. lucidum) polysaccharides and triterpenoids are the major bioactive compounds and have been used as traditional medicine for ancient times. Massive demands of G. lucidum have fascinated the researchers towards its application as functional food, nutraceutical and modern medicine owing to wide range of application in various diseases include immunomodulators, anticancer, antiviral, antioxidant, cardioprotective, hepatoprotective. G. lucidum polysaccharides exhibit immunomodulatory properties through boosting the action of antigen-presenting cells, mononuclear phagocyte system, along with humoral and cellular immunity. β-Glucans isolated from G. lucidum are anticipated to produce an immune response through pathogen associated molecular patterns (PAMPs). β-Glucans after binding with dectin-1 receptor present on different cells include macrophages, monocytes, dendritic cells and neutrophils produce signal transduction that lead to trigger the mitogen-activated protein kinases (MAPKs), T cells and Nuclear factor-κB (NF-κB) that refer to cytokines production and contributing to immune response. While triterpenoids produce antiviral effects through inhibiting various enzymes like neuraminidase, HIV-protease, DENV2 NS2B-NS3 protease and HSV multiplication. Polysaccharides and triterpenoids adjunct to other drugs exhibit potential action in prevention and treatment of various diseases. Immunomodulators and antiviral properties of this mushroom could be a potential source to overcome this current pandemic outbreak.

Ganoderma lucidum: A rational pharmacological approach to surmount cancer

ETHNOPHARMACOLOGICAL RELEVANCE

Ganoderma lucidum (G. lucidum) has been broadly used for health endorsement as well as longevity for over 2000 years in Asian countries. It is an example of an ancient remedy and known as immortality mushroom. It has been employed as a health promoting agent owing to its broad pharmacological and therapeutical approaches. It has been confirmed that G. lucidum exhibits significant potency to prevent and treat different types of cancers such as breast, prostate, colon, lung and cervical.

AIM OF THE STUDY

To explore anticancer effects of various pharmacologically active compounds obtained from G. lucidum and their possible mechanism of action.

MATERIALS AND METHODS

A literature search was conducted using PubMed, Goggle Scholar, Saudi Digital Library and Cochrane Library until October 11, 2019. Search was made by using keywords such as anticancer evidence, mechanism of action, pharmacology, antioxidant, toxicity, chemotherapy, triterpenoids and polysaccharides of G. lucidum.

RESULTS

Various chemical compounds from G. lucidum exhibit anticancer properties mainly through diverse mechanism such as cytotoxic properties, host immunomodulators, metabolizing enzymes induction, prohibit the expression of urokinase plasminogen activator (uPA) and urokinase plasminogen activator receptor (uPAR) in cancer cells. Among the various compounds of G. lucidum triterpenoids and polysaccharides are under the major consideration of studies due to their several evidence of preclinical and clinical studies against cancer.

CONCLUSION

Natural alternatives associated with mild side effects are the basic human need of present therapy to eradicate the new emerging disorders. This review is an attempt to compile pharmacologically active compounds of G. lucidum those exhibit anti cancer effects either alone or along with chemotherapy and anticancer mechanisms against various cancer cells, clinical trials, chemotherapy induced toxicity challenges with limitations. It acts as a possible substitute to combat cancer growth with advance and conventional combination therapies as natural alternatives.

Selectivity of Current Extraction Techniques for Flavonoids from Plant Materials

Flavonoids have a broad spectrum of established positive effects on human and animal health. They find an application in medicine for disease therapy and chemoprevention, whence the interest in flavonoids increases. In addition, they are used in food and cosmetic industries as pigments and biopreservatives. Plants are an inexhaustible source of flavonoids. The most important step of plant raw material processing is extraction and isolation of target compounds. The quality of an extract and efficiency of a procedure are influenced by several factors: Plant material and pre-extracting sample preparation, type of solvent, extraction technique, physicochemical conditions, etc. The present overview discusses the common problems and key challenges of the extraction procedures and the different mechanisms for selective extraction of flavonoids from different plant sources. In summary, there is no universal extraction method and each optimized procedure is individual for the respective plants. For an extraction technique to be selective, it must combine an optimal solvent or mixture of solvents with an appropriate technique. Last but not least, its optimization is important for a variety of applications. Moreover, when the selected method needs to be standardized, it must achieve acceptable degree of repeatability and reproducibility.