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Open AccessArticle

Telomere Length Changes during Critical Illness: A Prospective, Observational Study

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Department of Anesthesiology, Rabin Medical Center, Campus Beilinson, Petah Tikva 49100, Israel
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The Felsenstein Medical Research Center, Rabin Medical Center, Campus Beilinson, Petah Tikva and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel
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Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel
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The Felsenstein Medical Research Center, Rabin Medical Center, Campus Beilinson, Petah Tikva 49100, Israel
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Department of General Intensive Care and Institute for Nutrition Research, Rabin Medical Center, Campus Beilinson and the Sackler School of Medicine, Tel Aviv University, Petah Tikva 49100, Israel
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Author to whom correspondence should be addressed.
Genes 2019, 10(10), 761; https://doi.org/10.3390/genes10100761
Received: 12 August 2019 / Revised: 17 September 2019 / Accepted: 26 September 2019 / Published: 27 September 2019
(This article belongs to the Section Human Genomics and Genetic Diseases)
Objective: evaluation of telomere length change in acutely ill adult patients. Design: Blood samples were drawn on the first and seventh day of intensive care unit (ICU) stay to assess telomere length using a polymerase chain reaction (PCR)-based technique. Demographic data collected included age, weight, admission diagnosis, baseline laboratory values (pH, C- reactive protein (CRP), serum albumin level, white blood cell count (WBC) count, platelet count), and baseline SOFA and APACHE II scores. Additional data collected during the ICU stay included a repeated WBC count, the presence of positive blood cultures and outcome data, including death in the ICU or following discharge, whether ventilated or not at ICU discharge, and destination following discharge, i.e., medical ward or rehabilitation. Setting: General ICU in tertiary hospital. Patients: Forty patients admitted to the ICU within 72 h of hospital admission suffering from an acute illness were included in this prospective, observational study. Main results: Of the 40 patients studied, telomere shortening was noted in 21, telomere lengthening in 11, and no significant change in the other eight. The age of patients demonstrating telomere shortening was statistically significantly younger (45.4 vs. 61.5 years, p < 0.023) compared to those showing increased telomere length. In addition, a significant correlation was observed between the difference in telomere length and the corresponding difference in WBC count (telomere shortening was associated with a decreased WBC count and vice versa). A trend toward shortening was seen in patients with sepsis (p = 0.07). No significant correlations were found for any other demographic or outcome parameter and changes in telomere length. Conclusion: Changes in telomere length, both shortening and lengthening, were evident in the acute setting, but no associations between such changes with outcome were noted. Further studies in more homogeneous groups of patients appear to be warranted. View Full-Text
Keywords: telomeres; intensive care; acute illness; sepsis; white blood cells telomeres; intensive care; acute illness; sepsis; white blood cells
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MDPI and ACS Style

Zribi, B.; Uziel, O.; Lahav, M.; Mesilati Stahy, R.; Singer, P. Telomere Length Changes during Critical Illness: A Prospective, Observational Study. Genes 2019, 10, 761.

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