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Related Experiment Videos

Morphine modulates migration of monocytes

P C Singhal1, Z Shan, P Garg

  • 1Department of Medicine, Long Island Jewish Medical Center, New Hyde Park, N.Y. 11040, USA.

Nephron
|January 1, 1996
PubMed
Summary
This summary is machine-generated.

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Morphine, a heroin metabolite, significantly increases monocyte migration, potentially contributing to glomerulosclerosis in heroin users. This effect may be linked to superoxide-induced monocyte chemoattractant peptide-1 (MCP-1) generation.

Area of Science:

  • Nephrology
  • Immunology
  • Pharmacology

Background:

  • Macrophages are implicated in glomerulosclerosis development.
  • Heroin addiction is associated with kidney disease.
  • Morphine is an active metabolite of heroin.

Purpose of the Study:

  • To investigate the effect of morphine on monocyte migration.
  • To explore the role of mesangial cells and free radicals in morphine-induced monocyte migration.

Main Methods:

  • Modified Boyden chamber assay to assess monocyte migration.
  • Evaluation of dimethylthiourea (DMTU) as a free radical scavenger.
  • Analysis of mRNA expression for monocyte chemoattractant peptide-1 (MCP-1).

Main Results:

Related Experiment Videos

  • Morphine significantly enhanced monocyte migration across filters.
  • Dimethylthiourea (DMTU) attenuated the pro-migratory effect of morphine.
  • Morphine-activated mesangial cells and their secretory products increased monocyte passage, linked to MCP-1 expression.

Conclusions:

  • Morphine promotes monocyte migration, potentially via superoxide-induced MCP-1 generation.
  • This mechanism may contribute to glomerulosclerosis in individuals using heroin.
  • Further research into morphine's renal effects is warranted.