0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

Modulation of Macrophage Membrane Phospholipids by n-3 Polyunsaturated Fatty Acids Increases Interleukin 1 Release and Prevents Suppression of Cellular Immunity Following Hemorrhagic Shock

Wolfgang Ertel, MD; Mary H. Morrison, MS; Alfred Ayala, PhD; Irshad H. Chaudry, PhD
Arch Surg. 1993;128(1):15-21. doi:10.1001/archsurg.1993.01420130019004.
Text Size: A A A
Published online

• Studies have suggested that the significant suppression of cellular immunity following hemorrhage may be due to an increased release of prostaglandin E2 (PGE2) by macrophages. Since diets high in n-3 polyunsaturated fatty acids decrease PGE2 synthesis, we assessed whether hemorrhage-induced immunosuppression could be prevented by dietary manipulation. C3H/HeN mice were fed for 3 weeks with fat sources derived from corn oil, safflower oil, or fish oil, then bled to a mean blood pressure of 35 mm Hg maintained for 60 minutes. Following this, the animals were adequately resuscitated with fluids and killed 24 hours later. In the corn oil and safflower oil groups, hemorrhage resulted in a significant increase in PGE2 release by peritoneal macrophages, a marked suppression of peritoneal macrophage antigen presentation capacity, interleukin 1 release, splenocyte proliferation, and interleukin 2 secretion compared with shams. However, feeding mice with fish oil for 3 weeks prior to hemorrhage prevented the rise in PGE2 release and maintained normal macrophage and splenocyte functions following hemorrhage. Thus, the elevated release of PGE2 by peritoneal macrophages plays a pivotal role in hemorrhage-induced immunosuppression. Moreover, diets high in n-3 polyunsaturated fatty acids may offer a new therapeutic approach for preventing posthemorrhage immunosuppression and increased mortality from sepsis.

(Arch Surg. 1993;128:15-21)

Topics

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Figures

Tables

References

Correspondence

CME
Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();