title: A one year prospective comparison of kidney growth and function in children recipients of grafts from children and adults.
abstract: BACKGROUND
  Renal grafts have demonstrated capacity to adapt to the recipient. The aim of this study was to assess the growth of renal grafts transplanted to children, during the first year posttransplant.
  
  
  METHODS
  We conducted a 1 year prospective study comparing the growth of renal grafts from children and adults donors transplanted in children, and correlated this growth with graft function. Two groups were studied: (a) group 1-32 children transplanted with pediatric deceased kidneys from donors younger than 16 years and (b) group 2-31 children transplanted with organs from adult living donors. Anthropometric assessment, sonographic measurement of the graft, and serum creatinine at 1 week, 1, 6, and 12 months posttransplantation were performed.
  
  
  RESULTS
  Children from group 1 presented an 18% increase in graft volume after the sixth month of transplant, whereas in group 2 grafts presented a 14% reduction in volume, mainly during the first month; the variation in renal diameters was not uniform. Children from group 1 presented a glomerular filtration rate (GFR) increase during the follow-up (46-102 mL/min/1.73 m). After 1 year, GFR and graft volume were similar. Growth of individuals from both groups was comparable.
  
  
  CONCLUSIONS
  In the short term, pediatric kidneys raise volume and GFR, whereas adult kidneys slightly lower volume and GFR when transplanted in children. Taking our and other studies results into consideration, we can hypothesize that in addition to compensatory hypertrophy, pediatric grafts are likely capable of continued somatic growth.
authors.affiliation: Nephrology Department, Universidade Federal de São Paulo, Hospital do Rim e Hipertensão, Sao Paulo, Brazil.
authors.forename: Luciana de Santis
authors.initials: Lde S
authors.lastname: Feltran
authors.forename: Paulo Cesar Koch
authors.initials: PC
authors.lastname: Nogueira
authors.forename: Frederico Adolfo Benevides
authors.initials: FA
authors.lastname: Silva
authors.forename: Sergio Aron
authors.initials: SA
authors.lastname: Ajzen
authors.forename: Alvaro
authors.initials: A
authors.lastname: Pacheco-Silva
mesh_terms: D000293:Adolescent; D000328:Adult; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D002102:Cadaver; D002648:Child; D002675:Child, Preschool; D005190:Family; D005260:Female; D006801:Humans; D007668:Kidney / Q000254:growth & development* / Q000502:physiology; D016030:Kidney Transplantation / Q000502:physiology*; D019520:Living Donors / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D014019:Tissue Donors / Q000706:statistics & numerical data*