The binding equilibrium at 37 or 0°C of 125I‐cardiotoxin analogue III (CT III) to fetal lung (FL) cells (cultured human amnion cells) was achieved within 1 h, and the binding at 37°C was irreversible. The Scatchard analysis at 37°C on the binding of 125I‐CT III indicated that FL cells had two types of binding sites with different association constants. The association constant and the number of high‐affinity sites was 1.1 × 1010 mol−1 or 2.8 × 106 per FL cell, respectively. At 37 or 0°C, the cytotoxicity of CT III paralleled the amount of bound CT III to FL cells, and at 37°C was inhibited by the presence of acidic phospholipids.

Binding of Cardiotoxin Analogue III from Formosan Cobra Venom to FL Cells.

The aim of present study to formulate, evaluate and to check the wound healing activity of newly prepared polyherbal formulation (ointment) .Herbal ointment containing hydrochloric extracts of plants Psorolea corylifalia, Achryanthes aspera ,was formulated as ointment and the hydro alcoholic extract was prepared by maceration method. These Formulations were evaluated for the following parameters: pH, Spread ability, grittiness, skin irritation study, stability. The wound healing activity is assessed by the rate of wound contraction, Period of epithelisation and skin breaking strength. \nKeywords: Herbal Ointment, Wound Healing Activity.

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Evaluation of polyherbal ointment for wound healing activity in Wistar rats

A review on challenges and issues with carboxymethylation of natural gums: The widely used excipients for conventional and novel dosage forms.

Â Objective: The management of snake bite envenomation is a global challenge affecting millions of people. Immunotherapy is still regarded as the treatment of choice; however, their subsequent adverse effects restrict their potential use for therapy against snake venom poisoning. In recent years, more attention has been given to the exploration of indigenous medicinal plants for their outstanding benefits for the treatment of several diseases and disorders, including snake venom poisoning. Hesperetin is a naturally occurring compound derived from a flavanone glycoside, hesperidin and is obtained from various citrus fruits. It is known to possess significant inhibitory activity against snake venom serine proteases. The aim of our present study was to investigate the significant inhibitory action of hesperetin on thrombin-like serine protease from sharp-nosed pit viper (Deinagkistrodon acutus) snake venom.Methods: We have employed molecular docking analysis by implementing the state-of-the-art docking program to validate the hypothesis of the prospective inhibitory properties of hesperetin on thrombin-like serine proteases of snake venom. AutoDock 4.2, InterProSurf, MGLTools, and MTiAutoDock were utilized for the molecular docking analysis of thrombin-like serine protease obtained from the snake venom of sharp-nosed pit viper with the natural compound hesperetin.Results: The results generated from in silico based approach reveals the significant inhibitory role of hesperetin against thrombin-like snake venom proteases, which might lead to the drug designing of the inhibitors of snake venom serine proteases.Conclusion: The implementation of molecular docking analysis by the employment of state-of-the-art docking program supports the potential of inhibitory activity of naturally obtained hesperetin compound on thrombin-like serine proteases of snake venom. The generated in silico results suggests that the novel structure hesperetin - flavanone might act as a potent inhibitor of thrombin-like snake venom proteases, and unlocks the possibilities for designing drugs of the inhibitors of snake venom serine proteases. Moreover, the investigation of the novel compound obtained from natural sources for their inhibitory activity against snake venom serine proteases would lead to the discovery of newer inhibitory compound from a highly uninvestigated research arena.

Molecular docking studies of snake venom serine protease of sharp-nosed pit viper with hesperetin

Pharmacological re-assessment of traditional medicinal plants-derived inhibitors as antidotes against snakebite envenoming: A critical review.

Snake venom cytotoxin from different Naja species possesses significant cytotoxic activity on tumor cells. The cytoxin from snake venom can exert a plethora of biological activities including depolarization and muscular cell contraction, lysis of variety of cells such as red blood cells, epithelial cells and fetal lung cells, and also apoptotic activity on certain types of tumor cells. In the present article, we have effectively utilized comparative modeling approach to propose the first molecular model structure of cytotoxin 1 of Naja sputatrix .  The charge distribution on the structure and distribution of secondary structural elements were also investigated with the aid of In silico based approach. A homology structural model of the protein was generated and analyzed to deduce molecular enrichment strategy. The model data and other relevant post model analysis data provides a clear understanding of molecular structure of cytotoxin 1 of Naja sputatrix and its relevant cytotoxic potential for the development of a beneficial anticancer natural lead compound. Keywords: Cytotoxin 1, Naja Sputatrix, Anticancer Agent, Snake Venom, Structural model, Malayan cobra.

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Structural understanding of cytotoxin 1 of naja sputatrix: a potential anticancer agent

Snake bite envenoming causes high rates of morbidity and mortality and is one of the serious health-related concerns all over the globe. Around 3200 species of snakes have been discovered till date. Amid these species, about 1300 species of snakes are venomous. On account of its severity, World Health Organization (WHO) recently included snakebite envenoming in the list of neglected tropical diseases. Immunotherapy has partially solved the issues related to snakebite envenomation. However, it is associated with numerous adverse effects, due to which alternative treatment strategies are required for the treatment of snakebite. Traditionally, a large repository of herbal medicinal plants is known to possess activity against snake venom. An exploration of the therapeutic benefits of these medicinal plants used for the treatment of snakebites reveals the presence of various potential phytochemicals. The aim of the present review is to provide an outline regarding poisonous snakes all over the world, various compositions of snake venom, adverse effects related to anti-snake venom and numerous medicinal plants used for the anti-ophidian activity.

Anti-Ophidian Properties of Herbal Medicinal Plants: Could it be a Remedy for Snake Bite Envenomation?

Parasitic worm infection of humans is one of the most commonly prevalent helminth infection that has imposed great impact on society and public health in the developing world. The two species of hookworm, namely Ancylostoma duodenale and Necator americanus may be primarily responsible for causing parasitic infections in human beings. The highly prevalent areas for Ancylostoma duodenale infections are mainly India, Middle East, Australia, northern Africa and other parts of the world. The serum arylesterases/paraoxonases are family of enzymes that is involved in the hydrolysis of a number of organophosphorus insecticides to the nontoxic products. The participation of the enzymes in the breakdown of a variety of organophosphate substrates that is generally made up of paraoxon and numerous aromatic carboxylic acid esters (e.g., phenyl acetate), and hence combats the toxic effect of organophosphates. The aim of the present investigation is to evaluate the arylesterases of Ancylostoma duodenale giving special importance to structure generation, validation of the generated models, distribution of secondary structural elements and positive charge distribution over the structure. By the implementation of comparative modeling approach we propose the first molecular model structure of arylesterases of Ancylostoma duodenale.

Molecular Modeling and Structural Analysis of Arylesterase of Ancylostoma Duodenale.

Objective: The balance between deaths and cellular life is regulated by B-cell lymphoma 2 (BCL-2)-associated X protein (BAX) an important pro-apoptotic components of BCL-2 family. With this initial point, the aim of this study was to determine a comparative composite based structure of BAX of Chinese liver fluke and different structural analysis. Methods: Protein amino acid of BAX of Chinese liver fluke mined from National Centre for Biotechnology Information (http://ncbi.nlm.nih.gov). Molecular model of BAX of Chinese liver fluke protein was generated by the comparative composite modeling tool Iterative Threading ASSEmbly Refinement suite. Afterward, I-TASSER generated molecular model was subjected to further structural improvements by energy minimization step. Distribution of negatively and positively charged amino acid over molecular modeled structure, distribution of secondary structural elements, and hydrophobicity molecular surface analysis was performed with the help of bioinformatical tools. Results: Analysis of Ramachandran plot created by PROCHECK tool is a consensus standard for validation purpose of protein structural modeling. Altogether 97.8% of the residues were detected in allowed and favored regions, which in turn validate the quality of generated protein structural model. Total negatively and positively charged residues within the BAX of Chinese liver fluke were 23 and 20, respectively. Chimera package-guided hydrophobicity molecular surface analysis illustrates that molecule specific hydrophobicity surface is exclusive to BAX protein molecule. Conclusion: Within the scope of this scientific investigation, we have successfully utilized molecular modeling approach to suggest the first molecular three-dimensional model structure of BAX of Chinese liver fluke. The synchronous balance between cellular deaths and cellular life is keeping up by BAX, an important pro-apoptotic family member of BCL-2 family. Consequently, it would be an exciting approach to resolve its structural characterization and molecular structure to propose mode of mechanism action.

The biophysical characteristics and structural exploration of programmed cell death regulator b-cell lymphoma 2-associated x protein of chinese liver fluke (clonorchis sinensis)

Subhamay Panda

Papers

Molecular docking studies of snake venom serine protease of sharp-nosed pit viper with hesperetin

Structural understanding of cytotoxin 1 of naja sputatrix: a potential anticancer agent

Anti-Ophidian Properties of Herbal Medicinal Plants: Could it be a Remedy for Snake Bite Envenomation?

Molecular Modeling and Structural Analysis of Arylesterase of Ancylostoma Duodenale.

The biophysical characteristics and structural exploration of programmed cell death regulator b-cell lymphoma 2-associated x protein of chinese liver fluke (clonorchis sinensis)