BACKGROUND: Adipose tissue is significantly involved in inflammatory bowel disease (IBD). Vitamin D can affect both adipogenesis and inflammation. The aim of this study was to compare the production of selected adipokines, potentially involved in the pathogenesis of IBD - adiponectin, resistin, retinol binding protein 4 (RBP-4), adipocyte fatty acid binding protein and nesfatin-1 in children with IBD according to the presence of 25-hydroxyvitamin D (25(OH)D) deficiency. METHODS: The study was conducted as a case-control study in pediatric patients with IBD and healthy children of the same sex and age. In addition to adipokines and 25(OH)D, anthropometric parameters, markers of inflammation and disease activity were assessed in all participants. RESULTS: Children with IBD had significantly higher resistin levels regardless of 25(OH)D levels. IBD patients with 25(OH)D deficiency only had significantly lower RBP-4 compared to healthy controls and also compared to IBD patients without 25(OH)D deficiency. No other significant differences in adipokines were found in children with IBD with or without 25(OH)D deficiency. 25(OH)D levels in IBD patients corelated with RBP-4 only, and did not correlate with other adipokines. CONCLUSIONS: Whether the lower RBP-4 levels in the 25(OH)D-deficient group of IBD patients directly reflect vitamin D deficiency remains uncertain. The production of other adipokines does not appear to be directly related to vitamin D deficiency.

• MeSH
• adipokiny * krev   MeSH
• adiponektin krev   nedostatek   MeSH
• biologické markery krev   MeSH
• dítě MeSH
• DNA vazebné proteiny krev   MeSH
• idiopatické střevní záněty krev   komplikace   MeSH
• lidé MeSH
• mladiství MeSH
• nedostatek vitaminu D * komplikace   krev   MeSH
• nukleobindiny krev   MeSH
• plazmatické proteiny vázající retinol metabolismus   analýza   MeSH
• proteiny vázající mastné kyseliny krev   MeSH
• proteiny vázající vápník krev   MeSH
• resistin krev   MeSH
• studie případů a kontrol MeSH
• vitamin D * krev   analogy a deriváty   MeSH
• Check Tag
• dítě MeSH
• lidé MeSH
• mladiství MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

Ovarian cancer is the fifth leading cause of cancer death in women. Absence of a reliable biomarker precludes early diagnosis of the disease. To identify new proteins with potential diagnostic or prognostic value for the therapy of ovarian cancer we performed comparative proteomic analysis of sera from ovarian cancer patients and healthy women. We analyzed serum samples from 10 patients diagnosed with epithelial ovarian cancer and 10 age-matched healthy women. To decrease the extremely wide dynamic range of protein concentrations in serum we used combinatorial hexapeptide libraries. Serum samples were then subjected to proteomic 2-DE analysis. Three proteins with differential abundance were found and identified by mass spectrometry: α-1-antitrypsin, apolipoprotein A-IV and retinol-binding protein 4. Identification of α-1-antitrypsin and apolipoprotein A-IV confirms previous studies but the identification of significantly decreased levels of RBP4 in ovarian cancer patients represents a novel observation. We verified the decrease of RBP4 levels in ovarian cancer patient sera by two independent methods and determined absolute RBP4 concentrations in patients and healthy women. We excluded possible non-cancer factors that could be responsible for the observed RBP4 decrease. We propose a connection of RBP4 with epithelial ovarian cancer and advocate the potential of RBP4 as a candidate diagnostic or prognostic biomarker.

• MeSH
• 2D gelová elektroforéza metody   MeSH
• dospělí MeSH
• hmotnostní spektrometrie metody   MeSH
• lidé středního věku MeSH
• lidé MeSH
• nádorové biomarkery krev   MeSH
• nádory glandulární a epitelové krev   MeSH
• nádory vaječníků krev   MeSH
• plazmatické proteiny vázající retinol metabolismus   MeSH
• proteomika metody   MeSH
• studie případů a kontrol MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

Obesity is linked to a low-level chronic inflammatory state that may contribute to the development of associated metabolic complications. Retinol-binding protein 4 (RBP4) is an adipokine associated with parameters of obesity including insulin resistance indices, body mass index, waist circumference, lipid profile, and recently, with circulating inflammatory factors. Due to the infiltration of adipose tissue in obesity by macrophages derived from circulating monocytes and, on the other hand, the existence of a close genetic relationship between adipocytes and macrophages, we decided to examine if RBP4 is expressed in monocytes and/or primary human macrophages. While we did not detect expression of RBP4 in undifferentiated monocytes, RBP4 expression became evident during the differentiation of monocytes into macrophages and was highest in differentiated macrophages. Once we demonstrated the expression of RBP4 in macrophages, we checked if RBP4 expression could be regulated by inflammatory stimuli such as tumor necrosis factor-alpha (TNF-?), interleukin-6 (IL-6), or the endotoxin lipopolysaccharide (LPS). We observed that while RBP4 expression was strongly inhibited by TNF-? and LPS, it was not affected by IL-6. Our results highlight the complexity behind the regulation of this adipokine and demonstrate that RBP4 expression in macrophages could be modulated by inflammatory stimuli.

• MeSH
• exprese genu imunologie   účinky léků   MeSH
• financování organizované MeSH
• interleukin-6 farmakologie   MeSH
• kultivované buňky MeSH
• lidé MeSH
• lipopolysacharidy farmakologie   MeSH
• makrofágy cytologie   imunologie   MeSH
• messenger RNA metabolismus   MeSH
• obezita imunologie   metabolismus   MeSH
• plazmatické proteiny vázající retinol genetika   metabolismus   MeSH
• TNF-alfa farmakologie   MeSH
• Check Tag
• lidé MeSH