Omega-3 Fatty Acids That Affect the Immune System in Kidney Transplant Patients

Condition(s) targeted: Kidney Diseases

Intervention: Canola oil (Drug); Arginine (Drug); Fish oil emulsion (Drug)

Phase: N/A

Status: Completed

Sponsored by: National Institute of Allergy and Infectious Diseases (NIAID)

Official(s) and/or principal investigator(s):
J. W. Alexander, MD, Principal Investigator, Affiliation: University of Cincinnati

The purpose of this study is to evaluate the effectiveness of nutritional supplements in increasing the amount of omega-3 fatty acids (and arginine) in the red blood cell membranes and plasma of kidney transplant patients, and, secondarily, to compare patient compliance. The long-term goal of this study is to develop low risk therapies that will allow improved and lasting survival of donor tissue with minimal suppression of the immune system.

Official title: A Randomized Trial of Immunomodulating Diets With Arginine and Omega-3 Fatty Acids in Renal Transplant Recipients

Study design: Treatment, Randomized, Open Label, Active Control, Parallel Assignment, Efficacy Study

Primary outcome: Increases in omega-3 fatty acid levels in plasma and red blood cell membranes observed in each of the three omega-3 supplements used in this study

Secondary outcome: Compliance rates observed in each of the three study groups

Detailed description: Short-term survival rates of donor tissue after kidney transplantation have improved significantly in recent years because of improved immunosuppression. Rates of long-term tissue loss have changed less because of a high incidence of chronic rejection, infectious complications, and cardiovascular disease. Data suggest that both early and late complications might be reduced in transplant recipients by dietary intervention to raise levels of omega-3 fatty acids and arginine.

Prior to transplantation, participants are randomized to one of three groups. Group 1 participants serve as controls and receive no dietary supplements. Participants in Group 2 receive daily nutritional supplements of arginine and canola oil according to body weight. Group 3 participants receive daily nutritional supplements of arginine and a fish oil emulsion according to body weight. All participants receive a standard, low-fat dietary consultation. The status of participants is evaluated peri-transplant and at 1, 3, 6, and 9 months.

Minimum age: 4 Years. Maximum age: N/A. Gender(s): Both.

Criteria:

Inclusion Criteria:

- End-stage renal disease.

- Candidate to receive a living-related donor, living unrelated donor, or first cadaver

kidney with at least 1 HLA mismatch.

- Negative crossmatch with the intended donor.

- Adults must have moderate to severe hypertension and/or take at least 1 medication for

hypertension daily.

- Willingness to comply with the dietary supplements, including canola oil, a flavored

drink mix, or an orange flavored pudding.

Exclusion Criteria:

- Pregnancy or breast-feeding.

- Women of childbearing age who are not willing or able to practice acceptable methods

of contraception.

- HIV-positive.

- Positive test for HBV E-AG/DNA and HCV.

- Received an organ transplant or plan to receive a multiple organ transplant.

- Phenylketonuria.

- Participation in other investigational studies within 30 days of the renal

transplant.

- Allergy or anaphylactic reactions to eggs or L-arginine.

- ABO blood incompatibility.

- Children who have previously received more than 5 blood transfusions.

- History of stroke.

Washington Hospital Center, Washington, District of Columbia 20010, United States

University of Maryland School of Medicine, Baltimore, Maryland 21201, United States

Duke University Medical Center, Durham, North Carolina 27710, United States

University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, United States

Related publications:

van der Heide JJ, Bilo HJ, Donker JM, Wilmink JM, Tegzess AM. Effect of dietary fish oil on renal function and rejection in cyclosporine-treated recipients of renal transplants. N Engl J Med. 1993 Sep 9;329(11):769-73.

Daly JM, Lieberman MD, Goldfine J, Shou J, Weintraub F, Rosato EF, Lavin P. Enteral nutrition with supplemental arginine, RNA, and omega-3 fatty acids in patients after operation: immunologic, metabolic, and clinical outcome. Surgery. 1992 Jul;112(1):56-67.

Bower RH, Cerra FB, Bershadsky B, Licari JJ, Hoyt DB, Jensen GL, Van Buren CT, Rothkopf MM, Daly JM, Adelsberg BR. Early enteral administration of a formula (Impact) supplemented with arginine, nucleotides, and fish oil in intensive care unit patients: results of a multicenter, prospective, randomized, clinical trial. Crit Care Med. 1995 Mar;23(3):436-49.

Alexander JW, Levy A, Custer D, Valente JF, Babcock G, Ogle CK, Schroeder TJ. Arginine, fish oil, and donor-specific transfusions independently improve cardiac allograft survival in rats given subtherapeutic doses of cyclosporin. JPEN J Parenter Enteral Nutr. 1998 May-Jun;22(3):152-5.

Last updated: October 11, 2007