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Berita Kesehatan

Biomarkers of carcinogenesis and tumour growth in patients with cutaneous melanoma and obstructive s

Image : http://www.healthgoesup.com/wp-content/uploads/2011/07/melanoma-1024x600.jpg


Abstract

The goal of this study was to assess the relationship between the severity of obstructive sleep apnoea (OSA) and the levels of carcinogenesis- and tumour growth-related biomarkers in patients with cutaneous melanoma.

This multicentre observational study included patients who were newly diagnosed with melanoma. The patients were classified as non-OSA (apnoea–hypopnoea index (AHI) 0–5 events·h−1), mild OSA (AHI 5–15 events·h−1) and moderate–severe OSA (AHI >15 events·h−1). ELISAs were performed to analyse the serum levels of hypoxia- and tumour adhesion-related biomarkers (vascular endothelial growth factor (VEGF), interleukin (IL)-8, intracellular adhesion molecule (ICAM) and vascular cell adhesion molecule (VCAM)-1) and markers of tumour aggressiveness (S100 calcium-binding protein B (S100B) and melanoma inhibitory activity (MIA)). A logistic model adjusted for age, sex and body mass index was fitted to each biomarker, and the AHI served as the dependent variable.

360 patients were included (52.2% male, median (interquartile range) age 55.5 (43.8–68.0) years and AHI 8.55 (2.8–19.5) events·h−1). The levels of VEGF, IL-8, ICAM-1, S100B and MIA were not related to the severity of OSA. The levels of VCAM-1 were higher in patients with OSA than those without OSA (mild OSA: odds ratio (OR) 2.07, p=0.021; moderate–severe OSA: OR 2.35, p=0.013).

In patients with cutaneous melanoma, OSA was associated with elevated circulating levels of VCAM-1 that could indicate the contribution of OSA in tumorigenesis via integrin-based adhesion.

sumber : http://erj.ersjournals.com/content/51/3/1701885

 
 

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