Diabetic neuropathy is a long-existing painful neuronal error associated with high sugar levels, hyperalgesia, and slowed motor nerve conduction. Therefore, the study aims to investigate the efficacy of the methanolic extract of Tupistra clarkei (METC) against diabetes-inducing neuropathy in Wistar albino rats. The potential of these findings to inspire hope for improved treatment strategies for diabetic neuropathy is significant and inspiring, offering a promising outlook for the future.
Phytochemical and acute toxicity screening were carried out using METC. Then, Streptozotocin induces hyperglycaemia followed by neuropathy was carried out in five groups of animals such as the normal control (NC), Diabetic control (DC), The standard control (Std), The low-dose (100 mg/kg), the high-dose group (200 mg/kg). After regular observation of motor nerve conduction, neuropathic assays, and inflammatory mediators for the 8th week, animals were sacrificed using ketamine hydrochloride. The sciatic nerve was isolated, then subjected to histopathological analysis using an Olympus binocular microscope at 45X, and subjected to antioxidant study. METC reported the presence of alkaloids, carbohydrates, flavonoids, saponins, and steroids. The results of the LC-MS analysis of the METC samples detected at peak m/z 371.1100 could be responsible for the antidiabetic property of Tupistra clarkei. In addition, the results indicate significant restoration of oxidative stress, nerve conduction, inflammatory pain, elevated blood glucose levels related to hyperalgesia, motor nerve conduction, and reversible curing of cellular injury.
METC controls and prevents diabetes-induced neuropathic pain and related complications such as nerve conduction, raised temperature threshold, and extended latency in hyperalgesia.
The soy plant-derived isoflavone daidzin (DZN) has diverse biological activities, including neuroprotective (e.g., memory-enhancing and antiepileptic) effects. This study emphasizes evaluating the anxiolytic effect of DZN on mice. Additionally, in silico investigations were also carried out to check the potential molecular mechanisms for the anxiolytic effect of DZN. For this, adult male Swiss albino mice were intraperitoneally (i.p.) treated with DZN (5, 10, and 20 mg/kg) with or without the standard GABAergic agonist drug diazepam (DZP: 2 mg/kg) and/or antagonist drug flumazenil (FLU: 0.1 mg/kg) and checked for different locomotor behaviors using various mouse models. The molecular docking study of DZN was conducted against GABAA receptor subunits. Findings suggest that DZN dose-dependently and significantly (p <0.05) increased locomotor activities such as the number of field crosses, hole crosses, swings, grooming, and light residence time while decreasing the rearing of the animals. With DZP, it significantly (p <0.05) reduced the test parameters, while altering these parameters with FLU. Our molecular docking studies demonstrate that DZN has a strong binding affinity of −7.4 and −6.9 kcal/mol for α2 and α3 subunits of the GABAA receptor, respectively, whereas the standard drugs DZP and FLU showed binding affinities between −6.0 and −6.7 kcal/mol for these subunits. Taken together, DZN augmented the anxiolytic effect of DZP while reducing the effect of FLU in mice. We suppose that DZN may show anxiolytic-like effects on Swiss mice, possibly through α2 and α3 subunits of the GABAA receptor interaction pathway.
The paucity of targeted medications and vaccines, coupled with the coronaviruses (COVID-19) outbreak brought by SARS-CoV-19, forced scientists to look for novel antiviral formulations. The absence of a specific treatment for COVID-19, designing new drugs and considering the use of plant-based products is crucial in the search for an effective remedy to target this deadly virus. Phytochemical medicines are faster and more cost-effective compared to conventional treatment methods. The potential use of plant extracts in the prevention and treatment of COVID-19 may have its start with the abundance of naturally occurring chemicals obtained from plants. Coronavirus enzymes, which are necessary for virus infection and replication, can be inhibited by antiviral polyphenolic medications. Flavonoids, alkaloids, terpenes and terpenoids and many more are categorized as naturally occurring compounds that may be important in the development of antiviral treatments that block viral proteases. In this review, we presented up-to-date studies with special attention on challenges and side effects of medication and traditional plant-based therapies for respiratory problems. It also highlights the importance of plant-based antiviral compounds, particularly in the development of a broad-spectrum medication against coronaviruses like SARS-CoV-2.
Boerhavia diffusa (Punarnava), is a perennial herb with a long-standing reputation for its antioxidative and anti-inflammatory properties, dating back to ancient times. Methylglyoxal is an advanced glycation end-product, known to be toxic in liver cell line as well as in mice model. Our objective is to illustrate the protective action of punarnava aerial extracts in methylglyoxal-induced hepatotoxicity in cell line and mice model.
Punarnava aerial parts were collected and different solvent extracts were prepared in methanol, dichloromethane and hexane by maceration followed by their LCMS/MS characterization, determination of total phenolic, total flavonoid contents and antioxidant activity by DPPH reagent. Cell viability of the extracts and methylglyoxal was assessed using different cell lines. In vitro protective effect of punarnava methanolic extract (PME) against methylglyoxal was evaluated by cell migration assay, NO and ROS production assays and Oil Red O staining in HepG2 cell line. BALB/c mice were pretreated with Punarnava methanolic extract (200 mg/kg and 400 mg/kg) for seven days followed by 290 mg/kg methylglyoxal administration for 6 hrs to induce hepatotoxicity. Serum glucose, AST, ALT, ALP and GSH level were checked and liver histopathological damages were identified.
Among the three Punarnava extracts, PME possessed maximum antioxidant, total phenolic and flavonoid content as well as least cytotoxic to liver cell line. Methylglyoxal showed maximum toxicity in HepG2 cells with IC50 (50 % inhibitory concentration) 3 µM. PME confers protection against methylglyoxal-induced cytotoxicity by decreasing ROS, promoting cell migration and preventing loss of cell viability. No significant change was observed in NO production and Oil Red O staining. PME-treated mice showed decrease in liver ALP levels and glucose with intact cellular morphology compared to hepatocyte steatosis and nuclear degeneration in methylglyoxal-treated group.
Indigenous herb Punarnava is effective in protecting liver cells from damage induced by the glycolytic byproduct, methylglyoxal.
Leishmaniasis and American trypanosomiasis are part of a set of diseases characterized by the World Health Organization as neglected diseases caused by infectious and parasitic agents in populations in situations of poverty and poor sanitation. Pharmaceutical industries neglect such diseases, which have limited treatments, mainly due to few drug options and significant toxicity. Therefore, it is essential to search for new substances that have the potential to replace these medications. In this context, this study aimed to evaluate the leishmanicidal and trypanocidal activity of the ethanolic extract of the leaves and bark of Sarcomphalus joazeiro (Mart.) Hauenschild. These extracts were prepared by maceration with cold extraction. When carrying out the susceptibility tests, the extracts were tested in four different concentrations against the epimastigote forms of the CL-B5 parasite strains of Trypanosoma cruzi and promastigote forms of Leishmania braziliensis and Leishmania infantum, both tests were carried out "in vitro" in plates 96-well microdilution system, with nifurtimox and metronidazole as reference medicine. The cytotoxicity assay was performed with mammalian fibroblast lines from the NCTC 929 clone. The results indicate that the ethanolic extract of the bark of the stem of S. joazeiro (EBSJ) presented a more significant antiparasitic effect when compared to the ethanolic extract of the leaves of Sarcomphalus joazeiro (ELSJ) particularly against L. braziliensis and L. infantum. Regarding cytotoxicity, EBSJ and ELSJ presented moderate and low degrees, respectively. Based on the data obtained, further investigations into the properties of the bark extract are necessary, mainly due to its leishmanicidal potential.