کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6318603 1619198 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Total resistance of native bacteria as an indicator of changes in the water environment
ترجمه فارسی عنوان
مقاومت کامل باکتریهای مادری به عنوان شاخصی از تغییرات در محیط آب
کلمات کلیدی
آب رودخانه، ضد میکروبی، تتراسیکلین ها، باکتری های بومی، مقاومت،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی

This study analyzes changes in the total (intrinsic and acquired) resistance of autochthonous bacteria in a river which is a receiver of treated wastewater. In the analyzed samples, tetracycline contamination levels were low and characteristic of surface water bodies. An increase in the populations of tetracycline-resistant and fluoroquinolone-resistant microorganisms was noted in downstream river water samples in comparison with upstream river water samples, but the above trend was not observed in bacteria resistant to macrolides and β-lactams. The counts of doxycycline-resistant bacteria (DOXR) were significantly correlated with doxycycline levels. The minimum inhibitory concentrations (MICs) for doxycycline in DOXR isolates were higher in downstream river water than in upstream river water samples. The discharge of treated wastewater had no effect on the multi-drug resistance of oxytetracycline-resistant and doxycycline-resistant isolates. The results of the experiment indicate that the presence of doxycycline-resistant bacteria is a robust indicator of anthropogenic stress in river water.

► The total resistance of native bacteria in river which is a receiver of treated wastewater was analyzed. ► Tetracyclines contamination levels were low. ► The counts of doxycycline-resistant bacteria were correlated with doxycycline levels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 174, March 2013, Pages 85-92
نویسندگان
,