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Characterization of integrons and tetracycline resistance determinants in Aeromonas spp. isolated from South African aquaculture systems.
An increasing incidence of multidrug resistance amongst Aeromonas spp. isolates, which are both fish pathogens and emerging opportunistic human pathogens, has been observed worldwide. This can be… Expand
Evaluation of Adherence, Hydrophobicity, Aggregation, and Biofilm Development of Flavobacterium johnsoniae-Like Isolates
Flavobacterium spp. isolates have been identified in diverse biofilm structures, but the mechanism of adherence has not been elucidated. The absence of conventional biofilm-associated structures such… Expand
Phenotypic and molecular characterisation of fish-borne Flavobacterium johnsoniae-like isolates from aquaculture systems in South Africa.
Fish infections caused by pathogenic Flavobacterium species are a major problem in the aquaculture industry worldwide, often leading to large economic losses. Thirty-two Flavobacterium spp. isolates,… Expand
Triterpenoids from Vernonia auriculifera Hiern exhibit antimicrobial activity
Phytochemical investigation of Vernonia auriculifera afforded farnesylamine, a sesquiterpene amine that has not been found previously in plant species, together with lupenyl acetate, oleanolic acid,… Expand
Antibacterial and anti-adhesion activity of the pentacyclic triterpenoids isolated from the leaves and edible fruits of Carissa macrocarpa
Four pentacyclic oleanane triterpenes (β-amyrin, methyl oleanolate, oleanolic acid and 3β-hydroxyolean-11-en-28,13β-olide) were isolated from the fruits of Carissa macrocarpawhilst the ursane… Expand
Analysis of the mechanisms of fluoroquinolone resistance in urinary tract pathogens.
- H. Chenia, B. Pillay, D. Pillay
- Biology, Medicine
- The Journal of antimicrobial chemotherapy
- 1 December 2006
OBJECTIVES To characterize the mechanisms of fluoroquinolone resistance in urinary tract pathogens exhibiting a multiple antibiotic resistance phenotype as well as a high-level resistance to… Expand
Anti-Quorum Sensing Potential of Crude Kigelia africana Fruit Extracts
- H. Chenia
- Biology, Computer Science
- 27 February 2013
The increasing incidence of multidrug-resistant pathogens has stimulated the search for novel anti-virulence compounds. Expand
Biofilm formation and adherence characteristics of an Elizabethkingia meningoseptica isolate from Oreochromis mossambicus
BackgroundElizabethkingia spp. are opportunistic pathogens often found associated with intravascular device-related bacteraemias and ventilator-associated pneumonia. Their ability to exist as biofilm… Expand
The impact of plant volatiles on bacterial quorum sensing
Studies describing the use of essential oil constituents as antimicrobial agents have steadily increased; however, some phyto‐constituents are often overlooked due to unfavourable minimum inhibitory… Expand
Antibacterial and antioxidant activities of flavonoids from Lannea alata (Engl.) Engl. (Anacardiaceae)
Abstract Two new prenylated flavonoids, lanneaflavonol ( 1 ) and dihydrolanneaflavonol ( 2 ) together with the known compounds myricetin-3- O -α-rhamnopyranoside (myricitrin) ( 3 ) and myricetin-3- O… Expand