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- Volume 11, Issue 20, 2011
Current Topics in Medicinal Chemistry - Volume 11, Issue 20, 2011
Volume 11, Issue 20, 2011
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Editorial [Hot Topic: Snakebite Management: Time For Strategic Approach (Guest Editor: K. Kemparaju)]
By K. KemparajuSnakebite is a medical emergency and considered as an integral occupational hazard for farming and agricultural workers of the rural population worldwide. The human sufferings, morbidity and mortality rate is becoming increasingly high in South and Southeast Asian countries due to snakebite. Death or the physical deformities due to snakebite generally affects the young and healthy bread winners of the family that r Read More
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Overlooked Issues of Snakebite Management: Time for Strategic Approach
Authors: K. S. Girish and K. KemparajuSnakebite is a medical emergency in many parts of the world, particularly in the temperate regions. According to 2007 World Health Organization (WHO) report, there are about 5 million snakebite incidences resulting in 2.5 million envenoming, and 125,000 deaths occur annually. Most affected are the healthy individuals like children and farming populations with resource poor settings and away from health care centers in low-in Read More
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Structural and Functional Characterization of a γ-Type Phospholipase A2 Inhibitor from Bothrops jararacussu Snake Plasma
Phospholipases A2 (PLA2s) from snake venoms comprise a group of 14-18 kDa proteins, responsible for several toxic effects induced by the whole venom. Considering this, studies aiming at the search for natural inhibitors of these proteins are very important. The present work had as objectives the isolation and functional/structural characterization of a γ-type phospholipase A2 inhibitor (PLI) from Bothrops jararacussu Read More
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The Polyphenol 3, 4, 5 - Tri-hydroxy Benzoic Acid Inhibits Indian Daboia russelli Venom and Its Hemorrhagic Complex Induced Local Toxicity
Despite a long history on treatment and management of snakebite, as of now, no satisfactory cure exists to treat local toxicity, including anti-venom therapy. Several natural compounds from plants and their synthetic analogs have shown to be protective. In this study 3, 4, 5-tri-hydroxy benzoic acid, the gallic acid (GA) was tested against the local toxicity of Daboia russelli (DR) venom and its purified hemorrhagic comple Read More
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Neutralization of Local Toxicity Induced by Vipera russelli Phospholipase A2 by Lipophilic Derivative of Ascorbic Acid
L-ascorbic acid upon condensation with palmitic acid in the presence of sulphuric acid results in L-ascorbic acid-6-palmitate (AP). The effect of L-ascorbic acid derivative, AP on the pharmacological activities of purified basic multi-toxic PLA2 enzyme, VRV-PL-VIIIa from Vipera russelli snake venom along with in vitro activities is described. AP inhibited VRV-PL-VIIIa enzyme activity in a concentration dependent manner with IC5 Read More
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Therapeutic Potential of Peptides with Neutralizing Ability Towards the Venom and Toxin (CaTx-I) of Crotalus adamanteus
The CaTx-I (PLA2) toxin of Crotalus adamanteus venom is responsible for most of the symptoms observed during envenomation. Synthetic peptides were designed and screened for venom (0.8 μg/ml) and CaTx-I (0.1 μM) inhibition at varying doses of the peptide (10000- 0.0001 μM) using a Cayman chemical human secretory phospholipase A2 (sPLA2, Type II) assay kit. Further, in vitro neutralization studies were evaluated by Read More
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Daboia russelli Venom Hyaluronidase: Purification, Characterization and Inhibition by β-3-(3-Hydroxy-4-Oxopyridyl) α-Amino-Propionic Acid
Authors: Y. H. Mahadeswaraswamy, B. Manjula, S. Devaraja, K. S. Girish and K. KemparajuThe present study describes the purification and characterization of a hyaluronidase (DRHyal-II) from Daboia/Vipera russelli venom and its inhibition by β-3-(3-hydroxy-4-oxopyridyl) α-amino-propionic acid, the mimosine. Gel permeation and ion exchange chromatography were employed to isolate DRHyal-II. The molecular mass by MALDITOF mass spectrometry was found to be 28.3 kDa. Single band in reduced SDS-PAGE su Read More
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Protective Effect of Schizolobium parahyba Flavonoids Against Snake Venoms and Isolated Toxins
Four compounds (isoquercitrin, myricetin-3-O-glucoside, catechin and gallocatechin) were isolated from lyophilized aqueous extract of Schizolobium parahyba leaves by chromatography on Sephadex LH-20, followed by semipreparative HPLC using a C-18 column, and identified by 1H and 13C NMR. The compounds were then, tested against hemorrhagic and fibrinogenolytic activities of Bothrops crude venoms and isolated met Read More
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Characterization of Major Zinc Containing Myonecrotic and Procoagulant Metalloprotease ‘Malabarin’ from Non Lethal Trimeresurus malabaricus Snake Venom with Thrombin Like Activity: Its Neutralization by Chelating Agents
A major myonecrotic zinc containing metalloprotease ‘malabarin’ with thrombin like activity was purified by the combination of gel permeation and anion exchange chromatography from T. malabaricus snake venom. MALDI-TOF analysis of malabarin indicated a molecular mass of 45.76 kDa and its N-terminal sequence was found to be Ile-Ile-Leu- Pro(Leu)-Ile-Gly-Val-Ile-Leu(Glu)-Thr-Thr. Atomic absorption spectral analysis of mala Read More
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Inhibition of Hemorrhagic Activity of Viper Venoms by N-acetyl Cysteine: Involvement of N-acetyl and Thiol Groups
Authors: K. Sunitha, M. Hemshekhar, M. Sebastin Santhosh, M. Suresh Kumar, K. Kemparaju and K. S. GirishThe mortality rate due to snakebite is reduced markedly by the use of anti-venoms, which are the only medically approved remedial agents available. The anti-venoms effectively neutralize the systemic toxicity but offer no protection towards local tissue degradation. In viperid snake envenomations, SVMPs and SVHYs are the major agents responsible for brutal local tissue damage as they degrade ECM and basement Read More
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Volumes & issues
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Volume 25 (2025)
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Volume 24 (2024)
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Volume 23 (2023)
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Volume 22 (2022)
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Volume 21 (2021)
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Volume 20 (2020)
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Volume 19 (2019)
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Volume 18 (2018)
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Volume 17 (2017)
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Volume 16 (2016)
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Volume 15 (2015)
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Volume 14 (2014)
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Volume 13 (2013)
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Volume 12 (2012)
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Volume 11 (2011)
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Volume 10 (2010)
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Volume 9 (2009)
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Volume 8 (2008)
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Volume 7 (2007)
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Volume 6 (2006)
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Volume 5 (2005)
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Volume 4 (2004)
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Volume 3 (2003)
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Volume 2 (2002)
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Volume 1 (2001)
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