Authors: Viviane C Campos Mônica R Barrios Roberto Salvatori Roque Pacheco de Almeida Enaldo V de Melo Ana C S Nascimento Amélia Ribeiro de Jesus Manuel H AguiarOliveira
Publish Date: 2016/08/03
Volume: 54, Issue: 1, Pages: 182-190
Abstract
Growth hormone is important for the development and function of the immune system but there is controversy on whether growth hormone deficiency is associated to immune disorders A model of isolated growth hormone deficiency may clarify if the lack of growth hormone is associated with increased susceptibility to infections or with an altered responsiveness of the immune system We have studied the frequency of infectious diseases and the immune function in adults with congenital untreated isolated growth hormone deficiency In a crosssectional study 35 adults with isolated growth hormone deficiency due to a homozygous mutation in the growth hormone releasing hormone receptor gene and 31 controls were submitted to a clinical questionnaire physical examination serology for tripanosomiasis leishmaniasis HIV tetanus hepatitis B and C and serum total immunoglobulin G M E and A measurement The immune response was evaluated in a subset of these subjects by skin tests and response to vaccination for hepatitis B tetanus and bacillus CalmetteGuérin There was no difference between the groups in history of infectious diseases and baseline serology Isolated growth hormone deficiency subjects had lower total IgG but within normal range There was no difference in the response to any of the vaccinations or in the positivity to protein Purified Derived streptokinase or candidin Adult untreated isolated growth hormone deficiency does not cause an increased frequency of infectious diseases and does not alter serologic tests but is associated with lower total IgG levels without detectable clinical impactAll procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards
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