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Exp Ther Med. 2016 Mar;11(3):1077-1084. doi: 10.3892/etm.2016.3000. Epub 2016 Jan 15.

Peripheral T-lymphocyte and natural killer cell population imbalance is associated with septic encephalopathy in patients with severe sepsis.

Experimental and therapeutic medicine

Cheng-Xiang Lu, Ting Qiu, Hua-Sheng Tong, Zhi-Feng Liu, Lei Su, Biao Cheng

Affiliations

  1. Department of Intensive Care Unit, Affiliated General Hospital of Guangzhou Military Command of Southern Medical University, Guangzhou, Guangdong 510515, P.R. China; Department of Intensive Care Unit, Zhongshan Hospital Xiamen University, Xiamen, Fujian 361004, P.R. China.
  2. Department of Neurology, Zhongshan Hospital Xiamen University, Xiamen, Fujian 361004, P.R. China.
  3. Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China.
  4. Department of Intensive Care Unit, Affiliated General Hospital of Guangzhou Military Command of Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.
  5. Department of Plastic Surgery, Affiliated General Hospital of Guangzhou Military Command of Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.

PMID: 26998040 PMCID: PMC4774448 DOI: 10.3892/etm.2016.3000

Abstract

Septic encephalopathy (SE) is a diffuse cerebral dysfunction resulting from a systemic inflammatory response, and is associated with an increased risk of mortality. The pathogenesis of SE is complex and multifactorial, but unregulated immune imbalance may be an important factor. The current retrospective study examined the clinical data of 86 patients with severe sepsis who were admitted to the Intensive Care Unit at Zhongshan Hospital, Xiamen University (Xiamen, China) from January, 2014 to January, 2015. The patients were assigned to SE and non-SE patient groups according to the presence or absence of SE. The proportion of T-lymphocyte subsets and natural killer (NK) cells in the immune cell population, representing the function of the immune system, were analyzed for their association with SE and compared with other clinical predictors and biomarkers. The incidence of SE in the patients was 39.5%, and this group demonstrated higher mortality rates (38 vs. 10% in non-SE patients; P=0.001). Univariate analysis revealed that the SE patients reported a lower percentage of cluster of differentiation 4

Keywords: CD4+ T-lymphocytes; immune imbalance; mortality; natural killer cell; predictor; regression; septic encephalopathy; severe sepsis

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