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Fulltext Identification and characterization of the Lactic Acid Bacteria isolated from Malaysian fermented fish (Pekasam)

Ida Muryany, M,Y., Ghazali, A.R., Hing, H.L., Nor Fadilah, R., Ina Salwany, M,Y.

International Food Research Journal, 2017;24(2):868-875.
MyJurnal

Recently researchers are interested with the biotherapeutic potential of probiotics in gut disease
treatment. The bacteria are generally regarded as a safe, have a stability of usage and originate
from the natural resources. The study aims to identify and characterize the potential probiotic
Lactic Acid Bacteria (LAB) isolated from Malaysian fermented fish product known as
Pekasam. Fourty isolates obtained were firstly screened for their antagonism activities against
the common pathogenic bacteria; Esherichia coli, Staphylococcus aureus and Klebsiella sp.
Our study revealed only three (labeled as L8, L20 and S1) of the isolates tested showed broad
antimicrobial effects towards the pathogenic bacteria. All of the isolates were also γ-hemolytic
and tolerant to various pH (pH 3, 5 and 7.5) and 0.3% (w/v) bile salts. The bacteria isolates
of strain L8 and L20 were susceptible to seven antibiotics tested except vancomycin and
tetracycline whereas S1 was resistant to all antibiotics. Phenotypic tests revealed that both
bacteria isolates of strain L8 and L20 were Bacillus megaterium while S1 was Pediococcus
pentosaceus whereas 16S rRNA gene sequence analysis showed potential bacteria isolates
of strain L8 and L20 belonged to the Lactobacillus plantarum (99% similarity) and S1 was
characterized as Lactobacillus pentosus (100% similarity) respectively. Our present study
showed that the probiotics of strain L8, L20 and S1 isolated from the fermented fish (Pekasam)
exhibited the potential probiotic properties to be developed as biotherapeutic agents.
Efficacy of L-carnitine supplementation on frailty status and its biomarkers, nutritional status, and physical and cognitive function among prefrail older adults: a double-blind, randomized, placebo-controlled clinical trial

Badrasawi M, Shahar S, Zahara AM, Nor Fadilah R, Singh DK

Clin Interv Aging, 2016;11:1675-1686.
PMID: 27895474

BACKGROUND: Frailty is a biological syndrome of decreased reserve and resistance to stressors due to decline in multiple physiological systems. Amino acid deficiency, including L-carnitine, has been proposed to be associated with its pathophysiology. Nevertheless, the efficacy of L-carnitine supplementation on frailty status has not been documented. Thus, this study aimed to determine the effect of 10-week L-carnitine supplement (1.5 g/day) on frailty status and its biomarkers and also physical function, cognition, and nutritional status among prefrail older adults in Klang Valley, Malaysia.
METHODOLOGY: This study is a randomized, double-blind, placebo-controlled clinical trial conducted among 50 prefrail subjects randomized into two groups (26 in L-carnitine group and 24 in placebo group). Outcome measures include frailty status using Fried criteria and Frailty Index accumulation of deficit, selected frailty biomarkers (interleukin-6, tumor necrosis factor-alpha, and insulin-like growth factor-1), physical function, cognitive function, nutritional status and biochemical profile.
RESULTS: The results indicated that the mean scores of Frailty Index score and hand grip test were significantly improved in subjects supplemented with L-carnitine (P<0.05 for both parameters) as compared to no change in the placebo group. Based on Fried criteria, four subjects (three from the L-carnitine group and one from the control group) transited from prefrail status to robust after the intervention.
CONCLUSION: L-carnitine supplementation has a favorable effect on the functional status and fatigue in prefrail older adults.
Anti-amoebic properties of a Malaysian marine sponge Aaptos sp. on Acanthamoeba castellanii

Nakisah MA, Ida Muryany MY, Fatimah H, Nor Fadilah R, Zalilawati MR, Khamsah S, et al.

World J Microbiol Biotechnol, 2012 Mar;28(3):1237-44.
PMID: 22805843 DOI: 10.1007/s11274-011-0927-8

Crude methanol extracts of a marine sponge, Aaptos aaptos, collected from three different localities namely Kapas, Perhentian and Redang Islands, Terengganu, Malaysia, were tested in vitro on a pathogenic Acanthamoeba castellanii (IMR isolate) to examine their anti-amoebic potential. The examination of anti-Acanthamoebic activity of the extracts was conducted in 24 well plates for 72 h at 30 °C. All extracts possessed anti-amoebic activity with their IC(50) values ranging from 0.615 to 0.876 mg/mL. The effect of the methanol extracts on the surface morphology of A. castellanii was analysed under scanning electron microscopy. The ability of the extracts to disrupt the amoeba cell membrane was indicated by extensive cell's blebbing, changes in the surface morphology, reduced in cell size and with cystic appearance of extract-treated Acanthamoeba. Number of acanthapodia and food cup was also reduced in this Acanthamoeba. Morphological criteria of apoptosis in Acanthamoeba following treatment with the sponge's extracts was determined by acridine orange-propidium iodide staining and observed by fluorescence microscopy. By this technique, apoptotic and necrotic cells can be visualized and quantified. The genotoxic potential of the methanol extracts was performed by the alkaline comet assay. All methanol extracts used were significantly induced DNA damage compared to untreated Acanthamoeba by having high percentage of scores 1, 2, and 3 of the DNA damage. Results from cytotoxicity and genotoxicity studies carried out in the present study suggest that all methanol extracts of A. aaptos have anti-amoebic properties against A. castellanii.

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