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Changes of hexachlorobutadiene nephrotoxicity after piperonyl butoxide treatment
Abstract:
The effects of piperonyl butoxide on hexachlorobutadiene (HCBD) nephrotoxicity were measured. The time course and severity of toxicity were affected. Five hours after either piperonyl butoxide or HCBD glomerular filtration rate (GFR) was decreased; at 24 h GFR had recovered for the piperonyl butoxide group but continued to fall in the HCBD group. The group treated with piperonyl butoxide and HCBD had the same GFR as the group treated with just HCBD. At 24 h after HCBD the piperonyl butoxide pretreated group was not different from the oil pretreated controls. At 48 h after HCBD, reabsorbtion of water and glucose was more severely impaired in the group pretreated with piperonyl butoxide. These results support the hypothesis that HCBD metabolites are involved in renal tubular dysfunction.
Insights
Piperonyl butoxide affects hexachlorobutadiene (HCBD) kidney toxicity. While initially protective, it exacerbates HCBD-induced impairment of water and glucose reabsorption, suggesting HCBD metabolites cause kidney dysfunction.
Area of Science:
- Toxicology
- Environmental Health
- Renal Physiology
Background:
- Hexachlorobutadiene (HCBD) is a nephrotoxic industrial chemical.
- Understanding factors influencing HCBD toxicity is crucial for risk assessment.
Purpose of the Study:
- To investigate the modulatory effects of piperonyl butoxide on HCBD-induced nephrotoxicity.
- To elucidate the role of HCBD metabolites in renal tubular dysfunction.
Main Methods:
- Animal model exposed to HCBD and/or piperonyl butoxide.
- Measurement of glomerular filtration rate (GFR).
- Assessment of water and glucose reabsorption in renal tubules.
Main Results:
- Piperonyl butoxide initially decreased GFR but did not alter the HCBD-induced GFR decline at 24 hours.
- Pretreatment with piperonyl butoxide worsened water and glucose reabsorption impairment at 48 hours post-HCBD exposure.
- HCBD exposure significantly impacted renal function, with piperonyl butoxide exacerbating later-stage tubular dysfunction.
Conclusions:
- HCBD metabolites are implicated in the observed renal tubular dysfunction.
- Piperonyl butoxide's effect on HCBD nephrotoxicity is complex, potentially involving metabolic pathways.
- Further research is needed to clarify the mechanisms underlying piperonyl butoxide's interaction with HCBD toxicity.