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Fertil Steril. 2013 Mar 1;99(3):862-70. doi: 10.1016/j.fertnstert.2012.11.002. Epub 2012 Dec 4.

Uterine rejection after allogeneic uterus transplantation in the rat is effectively suppressed by tacrolimus.

Author information

1
Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. shamima.akhi@obgyn.gu.se

Abstract

OBJECTIVE:

To evaluate the effects of the immunosuppressant tacrolimus on rejection of a transplanted uterus and on uterine expression of markers of inflammation and implantation.

DESIGN:

Experimental study.

SETTING:

University laboratory.

ANIMAL(S):

Female rats.

INTERVENTION(S):

Uteri from brown Norway rats were transplanted to Lewis rats, receiving either tacrolimus or no treatment. Sham groups underwent either hemihysterectomy or tacrolimus treatment.

MAIN OUTCOME MEASURE(S):

Gross morphology, histology, density of T-lymphocytes by immunohistochemistry, and mRNA levels of interleukin (IL)-1α, leukemia inhibitory factor (LIF), galectin-1, CD200, IL-15, interferon-inducible protein-10 (IP-10), and nuclear factor-κB (NF-κB) at 14 days' post-transplantation.

RESULT(S):

Nontreated uterine grafts showed rejection with necrosis. Sham groups and the tacrolimus-treated transplanted group exhibited normal uterine morphology with low numbers of T-lymphocytes in all uteri except in two out of seven uteri of the tacrolimus-treated transplant group. Uteri of the nontreated transplanted group showed elevated mRNA expression of IL-1α and IP-10 and reduced galectin-1, compared with the tacrolimus-treated transplanted group. There was no difference between any groups concerning uterine expression of LIF, NF-κB, IL-15, and CD200.

CONCLUSION(S):

Tacrolimus monotherapy suppresses rejection of an allotransplanted uterus and normalizes the expression of IL-1α and IP-10 and prevents T-lymphocyte infiltration.

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