We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
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 |

Captopril and the Effect of Interferon Gamma on Monocytes

Mikhail Samsonov, MD; Eugeney Nassonov, MD; Gabriele Werner-Felmayer, PhD; Dietmar Fuchs, PhD; Helmut Wachter, PhD
Arch Intern Med. 1993;153(9):1138-1142. doi:10.1001/archinte.1993.00410090080013.
Text Size: A A A
Published online


Captopril is used as an antihypertensive drug for its inhibiting effect on angiotensin-converting enzyme, the enzyme that converts inactive angiotensin I to the active vasopressor angiotensin II. Captopril has also been shown to induce immunosuppression by a mechanism that involves monocytes and CD8+ cells. In vivo, captopril was beneficial in patients with rheumatoid arthritis2 and in an animal model of systemic lupus erythematosus.3

To study whether captopril has any direct effects on cells of the monocyte/macrophage lineage, we tested its influence on formation of neopterin, an in vivo marker for immune activation,4 and on tryptophan degradation. Both biochemical pathways are induced by interferon gamma in macrophages.5 We used the human myelomonocytic cell line THP-1 (American Type Culture Collection, Rockville, Md) that behaves similarly in this respect to freshly isolated monocytes.6 Cells grown in RPMI 1640 containing 10% heat-inactivated fetal calf serum, 2 mmol/L of L-glutamine,


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

First Page Preview

View Large
First page PDF preview





Also 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.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
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.


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

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

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