Abstract
IL-1β is a potent pro-inflammatory cytokine critical to multiple pathologies in the central nervous system (CNS). Quantification of IL-1β in vivo is challenging due to pM range of IL-1β released in the spinal cord and also the terminal nature of cerebrospinal fluid (CSF) sampling in rodents. Herein we developed a robust in vivo device on stainless steel suitable for detection of IL-1β in the spinal cord of rats. This approach offers high sensitivity (3.2 pg mL-1) and specificity to IL-1β. Also, a modified lumbar puncture method was employed to implant the device in the intrathecal space of male Sprague-Dawley (SD) rats under short-acting anesthesia, allowing minimal invasiveness, which provided the possibility of repeated measurement of IL-1β in the same animal. Our biosensing technology and the surgical method provide a universal platform for in vivo detection of diverse analytes in longitudinal, within-subject studies in the intrathecal space of rats to reduce the required number of experimental animals.
Original language | English |
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Pages (from-to) | 539-546 |
Number of pages | 8 |
Journal | ACS Applied Bio Materials |
Volume | 3 |
Issue number | 1 |
DOIs | |
Publication status | Published - 21 Jan 2020 |
Externally published | Yes |
Keywords
- cytokine sensing
- IL-1β
- longitudinal experiments
- rat intrathecal space
- spinal cord