Abstract

Kidneys play the major role in the synthesis and degradation of several hormones. Different coexisting conditions such as inflammation, malnutrition and metabolic acidosis and applied treatment may also cause endocrine abnormalities in chronic kidney disease (CKD) patients. A tendency towards decreased thyroxin and triiodothyronine with normal serum concentrations of reversed triiodothyronine (as opposed to other chronic non-thyroid, non-kidney diseases) and thyroid stimulating hormone are observed. As far as the somatotopic axis is concerned, in CKD normal serum concentration of growth hormone and its effector – the insulin-like growth factor are observed. Nevertheless, due to the phenomenon of GH/IGF-1 “resistance” CKD patients usually present a phenotype resembling GH deficiency. Serum prolactin concentrations are often elevated in CKD women and men. This leads to the dysregulation of the pituitary-gonadal axis causing hypogonadism and it’s clinical consequences regardless of patient’s gender. The alterations in hormones of gonadal origin caused by uremia, together with hyperprolactinemia lead to the development of sexual dysfunction and infertility in men and women. The alterations of thyroid, pituitary gland and gonads associated with CKD are discussed in this chapter. This review contains 4 tables, and 64 references. Keywords: chronic kidney disease, hypothyroidism, hyperthyroidism, growth hormone, recombinant human GH, insulin-like growth factors, hemodialysis

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