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Experimental Subarachnoid Haemorrhage Models in Rats

  • Conference paper
Research and Publishing in Neurosurgery

Part of the book series: Acta Neurochirurgica Supplements ((NEUROCHIRURGICA,volume 83))

Summary

There is no comprehensive and reliable model available in small animals that are suitable for the study of subarachnoid haemorrhage (SAH). In the study we reviewed the advantages and disadvantages of available SAH models in rats and presented our model.

Experimental SAH was induced in a group of 350–450 g Sprague- Dawley rats. A 2 mm-diameter burr hole was drilled and, working under a microscope, haemorrhage was produced by transclival puncture of the basilar artery with a 20 μm thick piece of glass. The rats were assigned to either the experimental group (n: 7) or the control group (n: 7). Local cerebral blood flow (LCBF), intracranial pressure (ICP), and cerebral perfusion pressure (CPP) were measured for 60 min after SAH, after which the rats were decapitated. Microscopic examinations were done on three different segments of the basilar artery.

There was a significant and sharp drop in LCBF just after SAH was induced (56.17 ± 12.80 mlLD/min/100 g and 13.57 ± 5.85 mlLD/min/100 g for baseline and post-SAH, respectively; p < 0.001), the flow slowly increased by the end of the experiment but never recovered to pre-SAH values (43,63 ±7.6 mlLD/min/ 100 g, p < 0.05). ICP (baseline 7.33 ± 0.8 mmHg) increased acutely to 70.6 ± 9.2 mmHg, and also returned to normal levels by 60 min after SAH. CPP (baseline 75.1 ± 4.9 mmHg) dropped accordingly (to 21.0 ± 6.3 mmHg) and then increased, reaching 70.1 ± 4.9 mmHg at 60 min after SAH. Examinations of the arteries revealed decreased inner luminal diameter and distortion of the elastica layer. We present an inexpensive and reliable model of SAH in the rat that allows single and multiple haemorrhages and to study the early and late course of pathological changes.

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Authors and Affiliations

  1. Department of Physiology, Uludag University, School of Medicine, Bursa, Turkey

    T. Alkan & N. Kahveci

  2. Department of Neurosurgery, Uludag University, School of Medicine, Bursa, Turkey

    E. Korfali M.D.

  3. Department of Neurosurgery, Uludag University, School of Medicine, Bursa, 16059, Turkey

    E. Korfali M.D.

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  1. T. Alkan
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  1. Ankara, Turkey

    Y. Kanpolat

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Alkan, T., Korfali, E., Kahveci, N. (2002). Experimental Subarachnoid Haemorrhage Models in Rats. In: Kanpolat, Y. (eds) Research and Publishing in Neurosurgery. Acta Neurochirurgica Supplements, vol 83. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6743-4_11

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  • DOI: https://doi.org/10.1007/978-3-7091-6743-4_11

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