Effect of earthworms in reduction and fate of antibiotic resistant bacteria (ARB) and antibiotic resistant genes (ARGs) during clinical laboratory wastewater treatment by vermifiltration. 2021

Sudipti Arora, and Sakshi Saraswat, and Ankur Rajpal, and Harshita Shringi, and Rinki Mishra, and Jasmine Sethi, and Jayana Rajvanshi, and Aditi Nag, and Sonika Saxena, and A A Kazmi
Dr. B. Lal Institute of Biotechnology, Malviya Industrial Area, Malviya Nagar, Jaipur 302017, India. Electronic address: sudiptiarora@gmail.com.

In the recent decades, the role of wastewater treatment plants has been entrenched for the dissemination of antibiotic resistant bacteria into the environment. The present study explores the dynamics of earthworms-microorganisms interactions involved in the high treatment efficacy of vermifiltration technology along with reduction of antibiotic resistant bacteria (ARB). This study is the first of its kind to investigate the performance efficacy of vermifilter (VF) for clinical laboratory wastewater treatment. The results of the study showed that earthworms and VF associated microbial community had a significant effect on Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) reduction (78-85%), coliforms and pathogen removal (>99.9%) and caused a significant shift in the prevalence pattern of ARB. Molecular profiling of resistance causing genes such as ESBL (blaSHV, blaTEM and blaCTX-M), MRSA (mec-A) and Colistin (mcr-1) confirmed the probable mechanisms behind the resistance pattern. The microbial community diversity in the influent, earthworm's coelomic fluid and gut and filter media layers associated with the VF assists in the formation of biofilm, which helps in the removal of pathogens from the wastewater. This biofilm formation further results in a paradigm shift in the resistance profile of ARB and ARG, specifically most effective against drugs, targeting cell wall and protein synthesis inhibition such as Ampicillin, Ticarcillin, Gentamicin and Chloramphenicol. These findings further validate vermifiltration technology as a sustainable and natural treatment technology for clinical laboratory wastewater, specifically for the removal of pathogens and antibiotic resistance.

UI MeSH Term Description Entries
D007753 Laboratories Facilities equipped to carry out investigative procedures. Laboratory
D009835 Oligochaeta A class of annelid worms with few setae per segment. It includes the earthworms such as Lumbricus and Eisenia. Earthworms,Eisenia foetida,Eisenia worm,Lumbricus,Lumbricus terrestris,Eisenia fetida,Earthworm,Eisenia fetidas,Eisenia foetidas,Eisenia worms,Lumbricus terrestri,Oligochaetas,fetida, Eisenia,foetidas, Eisenia,terrestris, Lumbricus,worm, Eisenia
D000806 Angiotensin-Converting Enzyme Inhibitors A class of drugs whose main indications are the treatment of hypertension and heart failure. They exert their hemodynamic effect mainly by inhibiting the renin-angiotensin system. They also modulate sympathetic nervous system activity and increase prostaglandin synthesis. They cause mainly vasodilation and mild natriuresis without affecting heart rate and contractility. ACE Inhibitor,ACE Inhibitors,Angiotensin Converting Enzyme Inhibitor,Angiotensin I-Converting Enzyme Inhibitor,Angiotensin-Converting Enzyme Inhibitor,Kininase II Inhibitor,Kininase II Inhibitors,Angiotensin I-Converting Enzyme Inhibitors,Angiotensin-Converting Enzyme Antagonists,Antagonists, Angiotensin-Converting Enzyme,Antagonists, Kininase II,Inhibitors, ACE,Inhibitors, Angiotensin-Converting Enzyme,Inhibitors, Kininase II,Kininase II Antagonists,Angiotensin Converting Enzyme Antagonists,Angiotensin Converting Enzyme Inhibitors,Angiotensin I Converting Enzyme Inhibitor,Angiotensin I Converting Enzyme Inhibitors,Antagonists, Angiotensin Converting Enzyme,Enzyme Antagonists, Angiotensin-Converting,Enzyme Inhibitor, Angiotensin-Converting,Enzyme Inhibitors, Angiotensin-Converting,II Inhibitor, Kininase,Inhibitor, ACE,Inhibitor, Angiotensin-Converting Enzyme,Inhibitor, Kininase II,Inhibitors, Angiotensin Converting Enzyme
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D001419 Bacteria One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive. Eubacteria
D057911 Angiotensin Receptor Antagonists Agents that antagonize ANGIOTENSIN RECEPTORS. Many drugs in this class specifically target the ANGIOTENSIN TYPE 1 RECEPTOR. Angiotensin II Receptor Antagonist,Angiotensin II Receptor Blocker,Angiotensin Receptor Antagonist,Angiotensin Receptor Blocker,Angiotensin II Receptor Antagonists,Angiotensin II Receptor Blockers,Angiotensin Receptor Blockers,Antagonist, Angiotensin Receptor,Antagonists, Angiotensin Receptor,Blocker, Angiotensin Receptor,Receptor Antagonist, Angiotensin,Receptor Antagonists, Angiotensin,Receptor Blocker, Angiotensin,Receptor Blockers, Angiotensin
D018508 Water Purification Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTEWATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies. Waste Water Purification,Waste Water Treatment,Wastewater Purification,Wastewater Treatment,Water Treatment,Purification, Waste Water,Purification, Wastewater,Purification, Water,Treatment, Waste Water,Treatment, Wastewater,Treatment, Water,Waste Water Purifications,Waste Water Treatments,Water Purification, Waste

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