Malays. Appl. Biol. (2018) 47(6): 145–152 ANTIMICROBIAL ACTIVITY OF PARTIALLY PURIFIED PEPTIDES ISOLATED FROM THE SKIN SECRETIONS OF BORNEAN FROGS IN THE FAMILY OF RANIDAE MUNA SABRI1,2, ELIZABETH JEGA JENGGUT1, RAMLAH ZAINUDIN3 and ZUNIKA AMIT1* 1Department of Basic Medical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia 2Centre of PreUniversity Studies, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia 3Department of Zoology, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia *E-mail:
[email protected] Accepted 20 December 2018, Published online 31 December 2018 The emergence of drug resistant bacteria has now the head and neck of the frogs (Rollin-Smith et al., become a major public health problem worldwide 2002). Most AMPs are cationic in nature and share (Cohen, 2000; Kumarasamy et al., 2010; Sengupta a net positive charge at neutral pH with the high et al., 2013). WHO report (2017) on global content of hydrophobic residues and an amphipathic surveillance of antimicrobial resistance revealed a character (Galdiero et al., 2013; Power & Hancock, widespread development of resistance in both gram 2003). These characteristics allow the frog skin positive and gram negative bacteria which had peptides to kill bacteria through cell lysis by threatened millions of people worldwide. A rapid binding to negatively charged components of the increase in the number of drug-resistant bacteria bacterial membrane (Schadich et al., 2013). The and the incidence nosocomial infections pose a AMPs attract attention due to their effectiveness in challenge to conventional therapies using existing killing both gram-negative and gram-positive antibiotics, leading to the need in finding bacteria, without any of the undesirable effects of alternative microbicides to control these infections antibiotic resistance (Conlon and Sonnevand, 2011; (Lakshmaiah et al., 2015).