COMPARATIVE IN-VITRO ANTIBACTERIAL AND ANTIFUNGAL ATTRIBUTES OF DIFFERENT SOLVENT EXTRACTS FROM LEAF, BARK, ROOT AND INFLORESCENCE OF MEMECYLON UMBELLATUM BURM.

This paper describes the antibacterial and antifungal activities and Minimum Inhibitory Concentration (MIC) of different solvent (pet. ether, chloroform, ethyl acetate, acetone, methanol and water) extracts of leaves, bark, root and inflorescence of Memecylon umbellatum burm. The percent yields from leaves, bark, root and inflorescence was found to be 0.2062 to 2.836, 0.0601 to 0.5142, 0.050 to 1.425, 0.0210 to 0.717 respectively. Overall, acetone extract produced from the leaves exhibited significantly (P < 0.05) higher antibacterial activity along with superior antifungal activity. MIC for acetone and ethyl acetate extract of leaf was found to be 0.5 mg for the entire organisms compared to 3-15 mg for other extracts. Such study will explore pharmacological activity of the tested parts of Memecylon umbellatum burm especially, the leaves which might be valuable for therapeutic applications

Phytochemical screening and In Vitro Antioxidant potential of Memecylon umbellatum Burm leaf extracts

Objective: Different dry extracts of Memecylon umbellatum Burm leaf obtained by various solvents such as petroleum ether, chloroform, ethyl acetate, acetone, methanol and chloroform water (IP) was screened to reap the benefits of its antioxidant and free radical scavenging properties using ascorbic acid as standard antioxidants. Methods: The in vitro free radical scavenging activity was evaluated using diphenyl picryl hydrazyl (DPPH) radical method using various concentrations of dry extract in distilled water (1, 2, 4, 8, 16, 20 μg/ml) against blank with ascorbic acid as a standard in same concentrations. Results: Among the all extracts, Methanol leaf extract has showed higher Antioxidant activity (84.65 ± 0.064 %) having IC50 Value 11.81 ± 0.033 μg/ml at 20 μg/ml. While, IC50 value for ascorbic acid was found to be 8.91 ± 0.084 μg/ml. Conclusion: The results clearly indicate that Methanol leaf extract of Memecylon umbellatum is effective in free radical scavenging. So in future, this may emerge as promising natural herbal source of powerful antioxidant. Keywords: Memecylon umbellatum, DPPH reagent, Antioxidant activity, Ascorbic acid, IC50

Silver Nanoparticles: Properties, Synthesis, Characterization, Applications and Future Trends

Nanotechnology is an expanding area of research where we use to deal with the materials in Nano-dimension. The conventional procedures for synthesizing metal nanoparticles need to sophisticated and costly instruments or high-priced chemicals. Moreover, the techniques may not be environmentally safe. Therefore “green” technologies for synthesis of nanoparticles are always preferred which is simple, convenient, eco-friendly and cost effective. Green synthesis of nanoparticle is a novel way to synthesis nanoparticles by using biological sources. It is gaining attention due to its cost effective, ecofriendly and large scale production possibilities. Silver nanoparticles (AgNPs) are one of the most vital and fascinating nanomaterials among several metallic nanoparticles that are involved in biomedical applications. It has vital importance in nanoscience and naomedicines to treat and prevent vital disease in human beings especially in cancer treatment. In current work we discussed different methods for synthesis of AgNPs like biological, chemical and physical along with its characterization. We have also discussed vital importance of AgNPs to cure life threatnign diseases like cancer along with antidiabetic, antifungal, antiviral and antimicrobial alog with its molecular mode of action etc. Finally we conclude by discussing future prospects and possible applications of silver nano particles

Rheumatoid Arthritis: Severity Classification, Factors Responsible, Pathophysiology, Current and Herbal Treatment

Rheumatoid Arthritis is the autoimmune disorder occurs due to the change in life style, improper diet plans, smoking, excessive alcohol consumption etc. It generally affects the joints and creates swelling and severe pain in joints which leads to further destruction of bone and cartilages. Due to autoimmune responses the factors like Tumor Necrosis Factor-α, Interleukins-1 are introduced to synovial and synovial membrane which creates the swelling and pain. These factors further produce reactive oxygen species and inducing osteoclasts which destruct the bone and cartilages. Along with the drugs the several natural herbal treatments are also available for the treatment of rheumatoid arthritis. This includes varies medicinal plants form which acacia species is more potent and efficient. Acacia Senegal is the plant which blocks the receptors and decreases the level of tumor necrosis factor-α. Present work on rheumatoid arthritis mainly covers classification, factors responsible, pathophysiology, severity, current treatment and its drawbacks, herbal treatment and its benefits in treatment of Rheumatoid Arthritis

Role of Drug Repurposing in Cancer Treatment and Liposomal Approach of Drug Targeting

Cancer is the leading cause of death, and incidences are increasing significantly and patients suffering from it desperately need a complete cure from it. The science of using an already-invented drug that has been approved by the FDA for a new application is known as “drug repurposing.” Currently, scientists are drawn to drug repositioning science in order to investigate existing drugs for newer therapeutic uses and cancer treatment. Because of their unique ability to target cancer cells, recently repurposed drugs and the liposomal approach are effective in the treatment of cancer. Liposomes are nanovesicles that are drastically flexible, rapidly penetrate deeper layers of cells, and enhance intracellular uptake. More importantly, liposomes are biocompatible, biodegradable; entrap both hydrophobic and hydrophilic drugs. This chapter summarizes various approaches to drug repurposing, as well as drug repurposing methods, advantages and limitations of drug repurposing, and a liposomal approach to using repurposed drugs in cancer targeting. This chapter also summarizes liposomal structure, drug loading, and the mechanism of liposomes in targeted cancer treatment. The lipid-based liposomal approach is emerging as a powerful technique for improving drug solubility, bioavailability, reducing side effects, and improving the therapeutic efficacy of repurposed drugs for cancer treatment

Molecular docking, synthesis and biological evaluation of some Imidazo-thiadiazole based Chalcone derivatives as potent triple mutant T790M/C797S EGFR inhibitors

In present study, we have designed and developed some imidazo-thiadiazole based chalcone derivatives as potential EGFR inhibitors. The designed derivative were screened through molecular docking studies and subjected for synthesis followed by in vitro anticancer activity. Most interestingly many molecules had formed one Pi-donor hydrogen bond (Pi-sulfur) or conventional hydrogen bond with Cys797 which is mutated amino acid residue for the second generation EGFR inhibitors. Many molecules had formed Pi-sulfur bond with Met790 which is mutated amino acid residue and developed resistance to the third generation EGFR inhibitors. All the interaction results presented here suggest these molecule has potential to be developed as most potent 4th generation EGFR inhibitors which will might have effectiveness against triple mutant T790M/C797S EGFR. From this investigation, it was decided to synthesize all the designed molecules with their biological evaluation. In vitro cytotoxicity of synthesized compounds against MCF-7 (Breast cancer) and A549 (Lung cancer) cells were carried out using MTT assay. All the synthesized compounds induced the cytotoxicity to MCF-7 and A549 and displayed good range of IC50 values in between 4 to 59 µm/mL.&nbsp

Evaluation of acute oral toxicity of the Camellia sinensis phytosome formulation in female wistar rats

Acute toxicity study was carried out for evaluation of toxic effect of formulation, safe acute dose for human and potential target organ for toxicity. Tea (Camellia sinensis), a cultivated evergreen plant and belonging to Theaceae family. The goal of present investigation was to perform acute toxicity study of Camellia sinensis phytosome formulation (CSP) for estimation of LD 50 or Median fatal dose and safe acute dose for human. A total of 12 female wistar rats weighing 90 to 100 gm were used in this investigation and divided into four groups, each with three animals, in accordance with 423 OECD guidelines. Group 1, 2, 3 and 4 animals were orally administered with 300 mg/kg bw of CSP, 300 mg/kg bw of CSP, 2000 mg/kg bw of CSP and 2000 mg/kg bw of CSP respectively. All the animals were observed for clinical sign, symptoms, body weight changes and mortality for 14 days. There was no death in any of the animals, and there were no significant variations in clinical signs or body weight in the experimental group. There were no abnormal alterations found during a gross necropsy.&nbsp

Microscopic Evaluation of Leaves of Memecylon umbellatum Burm

Objective. Aim of present work is to perform the microscopic evaluation and physicochemical analysis and to explore the morphology parameters of Memecylon umbellatum Burm leaves. Methods. Fresh, dried and desiccated powdered leaf samples were studied for their morphology, microscopy, organoleptic characters, and an assortment of other WHO recommended methods for standardisation. Results. The microscopy revealed the dorsiventral nature of the leaf. Midrib showed presence of nonlignified phloem, lignified xylem with well-defined xylem fibers, vessels, and parenchyma. Presence of Phloecentric vascular bundles surrounded by endodermis and crystal sheath. Well-defined patches of collenchyma were observed above and below the vascular bundles in the midrib area. Trichomes are mostly absent and stomata (anomocytic) were observed on both epidermal surfaces. Conclusions. It can be concluded that the microscopic analysis and pharmacognostic parameters can serve as tool for developing standards for proper authentication, quality, and purity of Memecylon umbellatum Burm leaves

Role of Leptin in Obesity Management: Current and Herbal Treatment

Obesity is an excessive accumulation of fat in the body associated with numerous complications such as development of hypertension, type 2 diabetes (T2DM), dyslipidemia, sleep apnea, and respiratory disorders; and ultimately life-threatening cardiovascular disease (CVD), stroke, certain types of cancer and osteoarthritis. In 2016, more than 1.9 billion adults aged 18 years and older were overweight. Of these, over 650 million adults were obese, that is over 39% of men and 40% of women were overweight. Rapid rise in obesity cases in both developed and developing countries and people suffering from it needs rapid and complete cure form it without any side effects. Herbal medicine has been used for the treatment of disease for more than 2000 years, and it has proven efficacy. Many studies have confirmed that herbal medicines are effective in the treatment of obesity. Various plants from different families and several phytochemical constituents are responsible for the anti-obesity activity such as fenugreek cinnamon, cardamom, ginger, etc. Present work mainly cover herbal species having leptin-stimulating potential for weight management, importance of leptin, its mechanism of action, current and herbal treatment for effective weight management