title: Exogenous Lipocalin 2 Ameliorates Acute Rejection in a Mouse Model of Renal Transplantation.
abstract: Lipocalin 2 (Lcn2) is rapidly produced by damaged nephron epithelia and is one of the most promising new markers of renal injury, delayed graft function and acute allograft rejection (AR); however, the functional importance of Lcn2 in renal transplantation is largely unknown. To understand the role of Lcn2 in renal AR, kidneys from Balb/c mice were transplanted into C57Bl/6 mice and vice versa and analyzed for morphological and physiological outcomes of AR at posttransplantation days 3, 5, and 7. The allografts showed a steady increase in intensity of interstitial infiltration, tubulitis and periarterial aggregation of lymphocytes associated with a substantial elevation in serum levels of creatinine, urea and Lcn2. Perioperative administration of recombinant Lcn2:siderophore:Fe complex (rLcn2) to recipients resulted in functional and morphological amelioration of the allograft at day 7 almost as efficiently as daily immunosuppression with cyclosporine A (CsA). No significant differences were observed in various donor-recipient combinations (C57Bl/6 wild-type and Lcn2(-/-) , Balb/c donors and recipients). Histochemical analyses of the allografts showed reduced cell death in recipients treated with rLcn2 or CsA. These results demonstrate that Lcn2 plays an important role in reducing the extent of kidney AR and indicate the therapeutic potential of Lcn2 in transplantation.
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.|Department for General, Visceral and Transplantation Surgery, Campus Virchow-Klinikum, Charité Universitätsmedizin, Berlin, Germany.
authors.forename: M I
authors.initials: MI
authors.lastname: Ashraf
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: H G
authors.initials: HG
authors.lastname: Schwelberger
authors.affiliation: Institute of Pathology, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: K A
authors.initials: KA
authors.lastname: Brendel
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: J
authors.initials: J
authors.lastname: Feurle
authors.affiliation: Department of Surgery, Clinic Grosshadern, Ludwig-Maximilian-University Munich, Munich, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Andrassy
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: K
authors.initials: K
authors.lastname: Kotsch
authors.affiliation: Institute of Pathology, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: H
authors.initials: H
authors.lastname: Regele
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.|Department for General, Visceral and Transplantation Surgery, Campus Virchow-Klinikum, Charité Universitätsmedizin, Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Pratschke
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.
authors.forename: H T
authors.initials: HT
authors.lastname: Maier
authors.affiliation: Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Innsbruck, Austria.|Department for General, Visceral and Transplantation Surgery, Campus Virchow-Klinikum, Charité Universitätsmedizin, Berlin, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Aigner
mesh_terms: D000208:Acute Disease; D000818:Animals; D051799:Delayed Graft Function / Q000517:prevention & control*; D005260:Female; D006084:Graft Rejection / Q000209:etiology / Q000378:metabolism / Q000517:prevention & control*; D006085:Graft Survival / Q000502:physiology; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D016030:Kidney Transplantation; D000071068:Lipocalin-2 / Q000008:administration & dosage* / Q000502:physiology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D023421:Models, Animal; D011994:Recombinant Proteins / Q000008:administration & dosage* / Q000235:genetics / Q000378:metabolism; D014184:Transplantation, Homologous
chemical_list: D007166:Immunosuppressive Agents; D000071068:Lipocalin-2; D011994:Recombinant Proteins; C071332:Lcn2 protein, mouse
keywords: animal models: murine, rejection: acute; basic (laboratory) research; kidney transplantation; nephrology; science