Steroids: theoretical and experimental basis for utilization in prevention of contrast media reactions.

Abstract

In vitro and in vivo studies were done to examine the effects of methylprednisolone on the adverse reactions induced by contrast media. At very high concentrations, the steroid potentiated the complement-activating effect produced in vitro by iodipamide, but inhibited the immune and nonimmune mechanisms of hemolysis. Rabbits pretreated for 3 days with intramuscular methylprednisolone (at high or low dosages) were significantly protected against an LD47 challenging dose of iodipamide. Those treated once with a low intravenous dose immediately prior to iodipamide challenge were protected to a lesser degree. Rabbits treated once with a very high intravenous dose of steroid evidenced no protection. A hyper-responsive dog was consistently protected against adverse reactions to injected sodium iothalamate by a 3-day steroid pretreatment.

• Authors: E C Lasser, J Lang, M Sovak, W Kolb, S Lyon, A E Hamlin
• Journal: Radiology (Radiology) Vol. 125 Issue 1 Pg. 1-9 (Oct 1977) ISSN: 0033-8419 [Print] United States
• PMID: 897151 (Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S.)

Chemical References

• Contrast Media
• Iothalamic Acid
• Complement System Proteins
• Prednisolone
• Iodipamide
• Methylprednisolone
• Iothalamate Meglumine

Topics

• Animals
• Complement System Proteins
• Contrast Media (adverse effects)
• Dogs
• Drug Hypersensitivity (etiology, prevention & control)
• Hemolysis (drug effects)
• Humans
• Iodipamide (administration & dosage, adverse effects)
• Iothalamate Meglumine (adverse effects)
• Iothalamic Acid (adverse effects)
• Methylprednisolone (therapeutic use)
• Prednisolone (therapeutic use)
• Rabbits