Background: Liver injury induced by drugs has become a primary reason for acute liver disease and therefore posed a potential regulatory and clinical challenge over the past few decades and has gained much attention. It also remains the most common cause of failure of drugs during clinical trials. In 50% of all acute liver failure cases, drug-induced hepatoxicity is the primary factor and 5% of all hospital admissions. Methods: The various hepatotoxins used to induce hepatotoxicity in experimental animals include paracetamol, CCl4, isoniazid, thioacetamide, erythromycin, diclofenac, alcohol, etc. Among the various models used to induce hepatotoxicity in rats, every hepatotoxin causes toxicity by different mechanisms. Results: The drug-induced hepatotoxicity caused by paracetamol accounts for 39% of the cases and 13% hepatotoxicity is triggered by other hepatotoxic inducing agents. Conclusion: Research carried out and the published papers revealed that hepatotoxins such as paracetamol and carbon- tetrachloride are widely used for experimental induction of hepatotoxicity in rats.
: Alzheimer's disease (AD) is a chronic neurodegenerative brain disorder characterized by memory impairment, dementia, oxidative stress in elderly people. Currently, only a few drugs are available in the market with various adverse effects. So to develop new drugs with protective action against the disease, research is turning to the identification of plant products as a remedy. Natural compounds with anti-inflammatory activity could be good candidates for developing effective therapeutic strategies. Phytochemicals including Curcumin, Resveratrol, Quercetin, Huperzine-A, Rosmarinic acid, genistein, obovatol, and Oxyresvertarol were reported molecules for the treatment of AD. Several alkaloids such as galantamine, oridonin, glaucocalyxin B, tetrandrine, berberine, anatabine have been shown anti-inflammatory effects in AD models in vitro as well as in-vivo. In conclusion, natural products from plants represent interesting candidates for the treatment of AD. This review highlights the potential of specific compounds from natural products along with their synthetic derivatives to counteract AD in the CNS.
Background: Prunella vulgaris, family Lamiaceae also known as self-heal, has been traditionally used as an expectorant, anti-inflammatory, anti-pyretic, and anti-rheumatic. Due to widespread distribution of the plant, Vulgaris is also called ‘vulgar’ in Latin adjective meaning common. Objective: The objective of this review was to describe the relevant aspects of phytochemistry and therapeutic uses of different fractions as well as isolated compounds from Prunella vulgaris. An attempt was also made to enumerate the possible leads e.g. betulinic acid, oleanolic acid, ursolic acid, umbelliferone, scopoletin, esculetin, luteolin, homoorientin, Rosmarinic acid and cinaroside for further development. Method: For peer-reviewed research literature, we undertook a structured search of bibliographic databases using a focused review question. Scientific databases such as PubMed, Scopus, Science Direct, and Google Scholar were used Results: Phytochemistry of Prunella vulgaris (PV) after a thorough literature survey revealed varied and copious metabolites, such as triterpenoids, phenolic acid, sterols, carbohydrates, coumarins, fatty acids, and volatile oils. Many of these compounds have been found to possess wide range of biological activity per se, including anti-microbial, immunosuppressive, anti-cancer, cardio-protective, anti-allergic and anti-inflammatory. Conclusion: Prunella vulgaris is a medicinal plant of immense medicinal importance having a variety of compounds such as such as triterpenoids, phenolic acid, sterols, carbohydrates, coumarins, fatty acids, and volatile oils and diversity in pharmacological spectrum. The plant could be further exploited, to isolate the various biologically active constituents responsible for its activity.
Background: Curcumin, a hydrophobic polyphenolic compound present in Curcuma longa Linn. (Turmeric), has been used to improve various neurodegenerative conditions, including Amyotrophic lateral sclerosis, Multiple Sclerosis, Parkinson's disease, Prion disease, stroke, anxiety, depression, and ageing. However, the blood-brain barrier (BBB) impedes the delivery of curcumin to the brain, as a result, limits its therapeutic potential. Objective/Aim: This review summarises the recent advances towards the therapeutic efficacy of curcumin along with various novel strategies to overcome its poor bioavailability across the blood-brain barrier. Methods: The collection of data for the compilation of this review work was searched in PubMed Scopus, Google Scholar, and Science Direct. Result: Various approaches have been opted to expedite the delivery of curcumin across the blood-brain barrier, including liposomes, micelles, polymeric nanoparticles, exosomes, dual targeting Nanoparticles etc. Conclusion: The review also summarises the numerous toxicological studies and the role of curcumin in CNS disorders.
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