PMID- 24791954 OWN - NLM STAT- MEDLINE DCOM- 20150401 LR - 20211021 IS - 1435-4373 (Electronic) IS - 0934-9723 (Linking) VI - 33 IP - 9 DP - 2014 Sep TI - Association of autophagy-related 16-like 1 (ATG16L1) gene polymorphism with sepsis severity in patients with sepsis and ventilator-associated pneumonia. PG - 1609-14 LID - 10.1007/s10096-014-2118-7 [doi] AB - Autophagy is a highly conserved mechanism of eukaryotic cells implicated in cell homeostasis and elimination of intracellular pathogens. Functional polymorphisms in genes encoding for autophagy have been associated with susceptibility to inflammatory and infectious diseases, but data on severe infections are missing. The aim of the present study was to assess whether polymorphisms in genes encoding proteins involved in autophagy influence susceptibility to ventilator-associated pneumonia (VAP). Mechanically ventilated patients with VAP were studied. Genotyping for autophagy-related 16-like 1 (ATG16L1, rs2241880) functional polymorphism was performed using the TaqMan single-nucleotide assay. Monocytes were isolated from patients and stimulated with lipopolysaccharide (LPS). Tumor necrosis factor-alpha (TNF-alpha) was measured in the supernatants of monocytes using an enzyme-linked immunosorbent assay. Procalcitonin (PCT) was also measured in the serum of patients by an immuno-time-resolved amplified cryptate technology assay. A total of 155 patients with VAP were enrolled in the study. Carriage of the minor A allele of ATG16L1 was associated with septic shock with at least one organ failure (odds ratio (OR): 2.40, p: 0.036). TNF-alpha production was significantly greater among the carriers of the polymorphism presenting with at least one organ failure (p: 0.040). PCT was increased upon worsening to septic shock and organ failure only among carriers of the minor frequency A alleles. In a homogeneous cohort of septic patients with VAP, the carriage of autophagy polymorphisms predisposes to VAP severity and septic shock development. This may be related with predisposition to immunoparalysis. FAU - Savva, A AU - Savva A AD - 4th Department of Internal Medicine, Attikon University Hospital, University of Athens, Medical School, 1 Rimini Str., 12462, Athens, Greece, savva.athina@gmail.com. FAU - Plantinga, T S AU - Plantinga TS FAU - Kotanidou, A AU - Kotanidou A FAU - Farcas, M AU - Farcas M FAU - Baziaka, F AU - Baziaka F FAU - Raftogiannis, M AU - Raftogiannis M FAU - Orfanos, S E AU - Orfanos SE FAU - Dimopoulos, G AU - Dimopoulos G FAU - Netea, M G AU - Netea MG FAU - Giamarellos-Bourboulis, E J AU - Giamarellos-Bourboulis EJ LA - eng PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20140503 PL - Germany TA - Eur J Clin Microbiol Infect Dis JT - European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology JID - 8804297 RN - 0 (ATG16L1 protein, human) RN - 0 (Autophagy-Related Proteins) RN - 0 (CALCA protein, human) RN - 0 (Carrier Proteins) RN - 0 (Protein Precursors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9007-12-9 (Calcitonin) RN - JHB2QIZ69Z (Calcitonin Gene-Related Peptide) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Autophagy-Related Proteins MH - Calcitonin/blood MH - Calcitonin Gene-Related Peptide MH - Carrier Proteins/*genetics MH - Female MH - *Genetic Predisposition to Disease MH - Genotype MH - Genotyping Techniques MH - Humans MH - Male MH - Middle Aged MH - Pneumonia, Ventilator-Associated/*pathology MH - *Polymorphism, Genetic MH - Protein Precursors/blood MH - Sepsis/*pathology MH - Tumor Necrosis Factor-alpha/metabolism MH - Young Adult EDAT- 2014/05/06 06:00 MHDA- 2015/04/02 06:00 CRDT- 2014/05/06 06:00 PHST- 2014/02/12 00:00 [received] PHST- 2014/04/08 00:00 [accepted] PHST- 2014/05/06 06:00 [entrez] PHST- 2014/05/06 06:00 [pubmed] PHST- 2015/04/02 06:00 [medline] AID - 10.1007/s10096-014-2118-7 [doi] PST - ppublish SO - Eur J Clin Microbiol Infect Dis. 2014 Sep;33(9):1609-14. doi: 10.1007/s10096-014-2118-7. Epub 2014 May 3.