Distribution and antibacterial drug resistance ofAeromonas spp. from fresh and brackish waters in Southern Turkey

Abstract

The frequency of antibiotic resistance was compared in Aeromonas spp. isolated from fresh and brackish water in Southern Turkey. A total of 97 Aeromonas spp. strains were isolated from four zones (three from fresh and one from brackish water). Most of the strains isolated from all samples were Aeromonas hydrophila (79.4%), while the amount of Aeromonas sobria and Aeromonas caviae, were rather lower in the samples examined (17.5% and 3.1% respectively). A high proportion of isolates from all water sources showed resistance to cephalotin (86.6%) and trimethoprim-sulphamethoxazole (69%). On the other hand, a low proportion of bacteria showed resistance to tetracycline (14.4%), chloramphenicol (11.3%), gentamicin (7.2%) and nitrofurantoin (6.8%). Only one strain showing resistance to amikacin was found. Multiple Antibiotic Resistance Index (MARI) to at least two antibiotics was highest in brackish water (zone 4), followed by fresh water (zone 3). MARI values ranging from 0.2 to 0.8 for the bacteria isolated from brackish water. This study suggest that, multiple antibiotic resistant Aeromonas spp., especially A. hydrophila, can be easily recovered from fresh and brackish water sources in Turkey and these sources may play as a reservoirs responsible for disease pathogen aeromonads.

Biofilm-Producing Ability and Antibiotic Resistance Pattern of Pathogenic Strains of Aeromonas hydrophila

“…Matyar et al studied antimicrobial resistance in Aeromonas spp. isolated from water in Turkey and reported that 14.4% of the studied strains were resistant to tetracycline, 11.3% to chloramphenicol, and 7.2% to gentamycin (39). In contrast to the current study results, Dias et al reported that all Aeromonas strains isolated from five animal species (red squirrel, snake, red deer, short-toed snake eagle, and tawny owl) were resistant to ciprofloxacin.…”

Aeromonas and Pseudomonas: antibiotic and heavy metal resistance species from Iskenderun Bay, Turkey (northeast Mediterranean Sea)

“…A high multiresistance incidence, similar to or higher than those found in the present study, has been reported in aquatic environments and fish isolates (Vivekanadhan et al 2002;Matyar et al 2007). According to Anderson and Levin (1999), the frequency and rates of ascent and dissemination of antibiotic resistance in bacterial populations can be directly related to the applied compounds.…”

“…A further concern is the increasing incidence of multidrug resistance amongst Aeromonas spp. isolates that has been observed worldwide (Petersen and Dalsgaard 2003;Ottoviani et al 2006;Matyar et al 2007). Besides their potential pathogenicity to humans, many Aeromonas species have also been described as important fish pathogens (Hänninen et al 1997;Doukas et al 1998).…”

Bazi Lakti̇k Asi̇t Bakteri̇leri̇ni̇n Anti̇bi̇yoti̇k Di̇rençli̇li̇kleri̇ Ve Aroma Maddeleri̇ Oluşturma Özelli̇kleri̇ni̇n Beli̇rlenmesi̇

“…Çoklu antibiyotik direnç indeksi (MARI) 0.20'den büyük olanlar›n yo¤un antibiyotik kullan›lan bir kaynaktan izole edildi¤i ve antibiyotik direncine ba¤l› olarak yüksek riskli organizmalar oldu¤u; çoklu antibiyotik direnç indeksi 0.20 ve 0.20'den küçük olanlar›n ise nadiren antibiyotik kullan›lan ya da kullan›lmayan kaynaklardan izole edildi¤i kabul edilmektedir. Bu çal›flmada antibiyotik dirençlilikleri belirlenen izolatlar›n çoklu antibiyotik direnç indeksleri hesaplanm›flt›r (11,12).…”