Dipender Gill1, Prasanthi Sivakumaran2, Adarsh Aravind2, Atisha Tank2, Roshni Dosh2, Roland Veltkamp3. 1. Imperial College London, Postgraduate Centre, Hammersmith Hospital; Imperial College Healthcare NHS Trust, Charing Cross Hospital. Electronic address: dipender.gill@imperial.ac.uk. 2. Imperial College Healthcare NHS Trust, Charing Cross Hospital. 3. Department of Stroke Medicine, Division of Brain Sciences, Imperial College London, London, United Kingdom.
Abstract
BACKGROUND: Leukocyte-mediated neuroinflammation may affect outcomes after ischemic stroke. AIMS: To explore temporal changes in levels of peripherally circulating leukocyte subtypes in the early hours after ischemic stroke in humans. METHODS: Retrospective analysis of a single-center database of consecutive thrombolysis cases for acute ischemic stroke (AIS). Multivariable regression analysis was used to explore temporal changes in the levels of peripherally circulating leukocyte subtypes in the hours immediately after ischemic stroke. A natural logarithm transformation was used to achieve normally distributed residuals, and adjustment was made for the severity of stroke, blood glucose concentration, sex, and age. RESULTS: Blood samples were taken a median time of approximately 2 hours after stroke symptom onset. Median peripheral neutrophil and lymphocyte counts on admission were 4.8 × 109cells per liter (interquartile range [IQR], 3.6-7.2 × 109 cells per liter) and 1.9 × 109cells per liter (IQR, 1.3-2.6 × 109cells per liter), respectively. Multivariable regression analysis revealed that after adjustment there was a linear increase in the natural logarithm of the peripheral neutrophil count (P < .01), with a linear decrease in the natural logarithm of the peripheral lymphocyte count (P < .01) in the hours immediately after stroke onset. No significant temporal associations were found between the levels of the other peripherally circulating leukocyte subtypes. CONCLUSIONS: Immediately after ischemic stroke, there is an exponential increase in the neutrophil count and an exponential decrease in the lymphocyte count.
BACKGROUND: Leukocyte-mediated neuroinflammation may affect outcomes after ischemic stroke. AIMS: To explore temporal changes in levels of peripherally circulating leukocyte subtypes in the early hours after ischemic stroke in humans. METHODS: Retrospective analysis of a single-center database of consecutive thrombolysis cases for acute ischemic stroke (AIS). Multivariable regression analysis was used to explore temporal changes in the levels of peripherally circulating leukocyte subtypes in the hours immediately after ischemic stroke. A natural logarithm transformation was used to achieve normally distributed residuals, and adjustment was made for the severity of stroke, blood glucose concentration, sex, and age. RESULTS: Blood samples were taken a median time of approximately 2 hours after stroke symptom onset. Median peripheral neutrophil and lymphocyte counts on admission were 4.8 × 109cells per liter (interquartile range [IQR], 3.6-7.2 × 109 cells per liter) and 1.9 × 109cells per liter (IQR, 1.3-2.6 × 109cells per liter), respectively. Multivariable regression analysis revealed that after adjustment there was a linear increase in the natural logarithm of the peripheral neutrophil count (P < .01), with a linear decrease in the natural logarithm of the peripheral lymphocyte count (P < .01) in the hours immediately after stroke onset. No significant temporal associations were found between the levels of the other peripherally circulating leukocyte subtypes. CONCLUSIONS: Immediately after ischemic stroke, there is an exponential increase in the neutrophil count and an exponential decrease in the lymphocyte count.
Authors: Farzaneh Sadeghi; Ferenc Sarkady; Katalin S Zsóri; István Szegedi; Rita Orbán-Kálmándi; Edina G Székely; Nikolett Vasas; Ervin Berényi; László Csiba; Zsuzsa Bagoly; Amir H Shemirani Journal: J Pers Med Date: 2022-07-27