Central Precocious Puberty and Chronic Renal Failure: A Reversible Condition Post Renal Transplantation

Abstract

A 3 year-old boy with chronic renal failure associated with prune belly syndrome who developed central precocious puberty is described. He had been maintained on cyclic peritoneal dialysis from age 13 months with creatinine levels of 400-600 μπιοΐ/ΐ. Increased linear growth rate probably began at 18 months, and by 38 months of age he had testicular enlargement and pubic hair consistent with Tanner stage 2. Elevated levels of serum testosterone (3.6 nmol/1; normal <0.7 nmol/1) and luteinizing hormone (LH) (2.8 IU/1; normal <1.0 IU/1) were demonstrated with a pubertal response to luteinizing hormone-releasing hormone (LHRH) stimulation (peak LH 43.5 IU/1). Other endocrine tests demonstrated hyperprolactinemia (170 μ|>/1; normal 3.4-22 μς/Ι), but normal pituitary-thyroid and pituitary-adrenal functions and normal cranial MR imaging. Despite LHRH-agonist therapy with leuprolide over the next 8 months, he showed an incomplete response with only partial inhibition of basal LH and testosterone levels, and continued significant increments in height standard deviation scores (Ht-SDS) and bone age estimates. However, the sexual precocity appeared fully reversible following a successful living-related renal transplant at age 50 months. Despite discontinuation of leuprolide treatment post-operatively, there was a full reversal of his serum LH and testosterone to a prepubertal profile as well as normalization of the serum prolactin levels. Whereas most boys with chronic renal failure show delayed pubertal development and suppressed linear growth, our patient presents a unique phenomenon of reversible central precocious puberty. The effects of leuprolide therapy in the presence of a uremic milieu and the outcome of successful renal transplantation on sexual precocity are described.

Dried Plums, Prunes and Bone Health: A Comprehensive Review

“…The literature search of the PubMed database yielded 50 articles [10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61]. After title/abstract review, 22 articles were screened in full-text and included in this comprehensive review [10,11,12,13,14,15,16,17,18,19,20,21,22,23,…”

Serum prolactin levels in a uremic child: effects of bilateral nephrectomy and kidney transplantation

“…Chronic renal failure often results in delayed sexual maturation in adolescents. Nonetheless, two reports in the literature described central precocious puberty in young boys, which appeared to be fully reversible following successful renal transplantation [ 7 ]. The endocrine findings (high testosterone, high gonadotropins and a pubertal response to GnRH stimulation) combined with normal cranial MRI results were suggestive of unexplained hypothalamic dysregulation.…”