title: The role of feed regulating peptides on weight loss in patients with pulmonary tuberculosis.
abstract: OBJECTIVE
  Malnutrition is a prominent feature of tuberculosis (TB). The aim of our study was to explore the function of plasma regulatory proteins in pulmonary TB and to investigate the relationship between these parameters and loss of body weight.
  
  
  METHODS
  Plasma levels of fasting insulin, leptin, ghrelin, adiponectin and orexin-A were measured in 23 pulmonary TB patients, 39 patients with pulmonary sarcoidosis, 22 patients with different diffuse interstitial lung diseases and 21 healthy patients serving as controls.
  
  
  RESULTS
  Plasma leptin (p<0.001) and orexin-A (p<0.01) levels were significantly decreased in TB patients compared with those of the other study subjects. TB patients also had higher levels of plasma ghrelin compared with those of the other study subjects, while sarcoidosis patients had higher plasma adiponectin levels than the other study subjects. Glucose levels were similar in all groups, yet, insulin and Homeostasis Model of Assessment-Insulin Resistance (HOMA-IR) levels were significantly higher in the TB group compared to the other study groups. There was no correlation between leptin, ghrelin, adiponectin and orexin-A and other parameters.
  
  
  CONCLUSIONS
  These data suggest that leptin and orexin-A levels have effects on weight loss in patients with pulmonary tuberculosis. Particularly, leptin may play a role in the early immune response to pulmonary TB and prolonged inflammation may further suppress leptin production. Measurement of HOMA-IR can indeed be used as a marker for the risk of activated TB. Further clinical studies are needed to better understand the role of feed regulating proteins in pulmonary tuberculosis.
authors.affiliation: Yedikule Chest Disease and Chest Surgery Education and Research Hospital, Istanbul, Turkey. yurtsibel@hotmail.com
authors.forename: S
authors.initials: S
authors.lastname: Yurt
authors.forename: H
authors.initials: H
authors.lastname: Erman
authors.forename: G G
authors.initials: GG
authors.lastname: Korkmaz
authors.forename: A F
authors.initials: AF
authors.lastname: Kosar
authors.forename: P
authors.initials: P
authors.lastname: Uysal
authors.forename: R
authors.initials: R
authors.lastname: Gelisgen
authors.forename: G
authors.initials: G
authors.lastname: Simsek
authors.forename: H
authors.initials: H
authors.lastname: Uzun
mesh_terms: D052242:Adiponectin / Q000097:blood; D000328:Adult; D015992:Body Mass Index; D016022:Case-Control Studies; D005260:Female; D054439:Ghrelin / Q000097:blood; D006801:Humans; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance; D047908:Intracellular Signaling Peptides and Proteins / Q000097:blood; D008171:Lung Diseases / Q000097:blood / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009479:Neuropeptides / Q000097:blood; D000068797:Orexins; D036361:Peptide Hormones / Q000097:blood*; D017565:Sarcoidosis, Pulmonary / Q000097:blood / Q000503:physiopathology; D014397:Tuberculosis, Pulmonary / Q000097:blood* / Q000503:physiopathology*; D015431:Weight Loss / Q000502:physiology*
chemical_list: D052242:Adiponectin; D054439:Ghrelin; C000596229:HCRT protein, human; D007328:Insulin; D047908:Intracellular Signaling Peptides and Proteins; D009479:Neuropeptides; D000068797:Orexins; D036361:Peptide Hormones