Pre-chiasmatic, single injection of autologous blood to induce experimental subarachnoid hemorrhage in a rat model
(2021) In Journal of Visualized Experiments 2021(172).- Abstract
Despite advances in treatment over the last decades, subarachnoid hemorrhage (SAH) continues to carry a high burden of morbidity and mortality, largely afflicting a fairly young population. Several animal models of SAH have been developed to investigate the pathophysiological mechanisms behind SAH and to test pharmacological interventions. The pre-chiasmatic, single injection model in the rat presented in this article is an experimental model of SAH with a predetermined blood volume. Briefly, the animal is anesthetized, intubated, and kept under mechanical ventilation. Temperature is regulated with a heating pad. A catheter is placed in the tail artery, enabling continuous blood pressure measurement as well as blood sampling. The... (More)
Despite advances in treatment over the last decades, subarachnoid hemorrhage (SAH) continues to carry a high burden of morbidity and mortality, largely afflicting a fairly young population. Several animal models of SAH have been developed to investigate the pathophysiological mechanisms behind SAH and to test pharmacological interventions. The pre-chiasmatic, single injection model in the rat presented in this article is an experimental model of SAH with a predetermined blood volume. Briefly, the animal is anesthetized, intubated, and kept under mechanical ventilation. Temperature is regulated with a heating pad. A catheter is placed in the tail artery, enabling continuous blood pressure measurement as well as blood sampling. The atlantooccipital membrane is incised and a catheter for pressure recording is placed in the cisterna magna to enable intracerebral pressure measurement. This catheter can also be used for intrathecal therapeutic interventions. The rat is placed in a stereotaxic frame, a burr hole is drilled anteriorly to the bregma, and a catheter is inserted through the burr hole and placed just anterior to the optic chiasm. Autologous blood (0.3 mL) is withdrawn from the tail catheter and manually injected. This results in a rise of intracerebral pressure and a decrease of cerebral blood flow. The animal is kept sedated for 30 min and given subcutaneous saline and analgesics. The animal is extubated and returned to its cage. The pre-chiasmatic model has a high reproducibility rate and limited variation between animals due to the pre-determined blood volume. It mimics SAH in humans making it a relevant model for SAH research.
(Less)
- author
- Bömers, Jesper Peter ; Johansson, Sara Ellinor LU ; Edvinsson, Lars LU ; Mathiesen, Tiit Illimar and Haanes, Kristian Agmund
- organization
- publishing date
- 2021-06
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Visualized Experiments
- volume
- 2021
- issue
- 172
- article number
- e62567
- publisher
- JoVE
- external identifiers
-
- pmid:34223831
- scopus:85110907892
- ISSN
- 1940-087X
- DOI
- 10.3791/62567
- language
- English
- LU publication?
- yes
- id
- bf7265fb-5ddd-45ee-9a35-269d533a09b8
- date added to LUP
- 2021-08-23 11:36:09
- date last changed
- 2024-06-15 15:00:22
@article{bf7265fb-5ddd-45ee-9a35-269d533a09b8,
abstract = {{<p>Despite advances in treatment over the last decades, subarachnoid hemorrhage (SAH) continues to carry a high burden of morbidity and mortality, largely afflicting a fairly young population. Several animal models of SAH have been developed to investigate the pathophysiological mechanisms behind SAH and to test pharmacological interventions. The pre-chiasmatic, single injection model in the rat presented in this article is an experimental model of SAH with a predetermined blood volume. Briefly, the animal is anesthetized, intubated, and kept under mechanical ventilation. Temperature is regulated with a heating pad. A catheter is placed in the tail artery, enabling continuous blood pressure measurement as well as blood sampling. The atlantooccipital membrane is incised and a catheter for pressure recording is placed in the cisterna magna to enable intracerebral pressure measurement. This catheter can also be used for intrathecal therapeutic interventions. The rat is placed in a stereotaxic frame, a burr hole is drilled anteriorly to the bregma, and a catheter is inserted through the burr hole and placed just anterior to the optic chiasm. Autologous blood (0.3 mL) is withdrawn from the tail catheter and manually injected. This results in a rise of intracerebral pressure and a decrease of cerebral blood flow. The animal is kept sedated for 30 min and given subcutaneous saline and analgesics. The animal is extubated and returned to its cage. The pre-chiasmatic model has a high reproducibility rate and limited variation between animals due to the pre-determined blood volume. It mimics SAH in humans making it a relevant model for SAH research.</p>}},
author = {{Bömers, Jesper Peter and Johansson, Sara Ellinor and Edvinsson, Lars and Mathiesen, Tiit Illimar and Haanes, Kristian Agmund}},
issn = {{1940-087X}},
language = {{eng}},
number = {{172}},
publisher = {{JoVE}},
series = {{Journal of Visualized Experiments}},
title = {{Pre-chiasmatic, single injection of autologous blood to induce experimental subarachnoid hemorrhage in a rat model}},
url = {{http://dx.doi.org/10.3791/62567}},
doi = {{10.3791/62567}},
volume = {{2021}},
year = {{2021}},
}