Effluents from hospital wastewater are recognized as important
sources of antibiotic and heavy metal resistant bacteria and might play a role
in the removal and dissemination of antimicrobial resistance in the
environment. The release of resistant bacteria to the receiving environment can
pose public health impact. The microbiome analysis was carrying out from
wastewater soils of hospitals in Aizawl city, Mizoram, India. According to 16S
rRNA amplification and sequencing, the isolated bacteria from the wastewater
soils were found to be mainly of Morganella morganii and Bacillus
cereus. These isolated bacteria were found to be highly resistant to
a wide range of antibiotics and heavy metals. The antibiotic resistance
profiles of these isolated bacteria were analyzed. The strains HC and HR
possessed a high level of resistance to different antibiotics, and both grew
remarkably well even at 200 mg/ml of ampicillin, 100 μg/ml of kanamycin, chloramphenicol and
ciprofloxacin even at a concentration of 50 mg/ml could not inhibit the growth
of the HC strains. The level of resistance was also remarkably high when
compared to earlier reports of antibiotic resistance observed in the
corresponding bacteria. Our results suggested that the high level of resistance
is probably conferred by the continued exposure to antibiotics from hospital
effluent leading to a selected population of highly antibiotics resistant
bacteria. The heavy metal resistance profile of the isolated species was
studied. The HC and the HR strains show high resistance to lead (Pb) and
cadmium (Cd) compared to the control (DH5α).
Author(s) Details:
Lalremruata Hauhnar,
Department of Zoology, Govt. Champhai College, Champhai, Mizoram, India.
Lallianmawii Pachuau,
Department of
Biotechnology, Mizoram University, Aizawl, Mizoram, India.
H. Lalhruaitluanga,
Department of Biotechnology, Mizoram University, Aizawl, Mizoram, India.
Please see the link here: https://stm.bookpi.org/RAMB-V4/article/view/10128
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