Mehmet Gazi Boyacı1, Usame Rakip2, Adem Aslan3, Halit Buğra Koca4, Esra Aslan5, Serhat Korkmaz3, Serhat Yıldızhan3. 1. Department of Neurosurgery, Afyonkarahisar Health Sciences University Faculty of Medicine, Afyonkarahisar, Turkey. Electronic address: mgazibyc@hotmail.com. 2. Department of Neurosurgery, TCSB Niğde Ömer Halisdemir University Hospital, Niğde, Turkey. 3. Department of Neurosurgery, Afyonkarahisar Health Sciences University Faculty of Medicine, Afyonkarahisar, Turkey. 4. Department of Biochemistry, Afyonkarahisar Health Sciences University Faculty of Medicine, Afyonkarahisar, Turkey. 5. Department of Histology and Embryology, Afyonkarahisar Health Sciences University Faculty of Medicine, Afyonkarahisar, Turkey.
Abstract
BACKGROUND: Cerebral vasospasm remains a serious problem affecting morbidity and mortality in patients with subarachnoid hemorrhage (SAH) during neurosurgery. We aimed to demonstrate the role of the transient receptor potential channel and other channels for Ca2+ in the etiology of cerebral vasospasm using 2-aminoethyl diphenylborinate (2-APB) and the effective dose range of an unstudied pharmacological agent, which can limit vasospasm. METHODS: We performed an experimental study using 32 Sprague-Dawley rats divided into 4 groups: sham group (n = 8), SAH group (n = 8), 2-APB group (SAH rats intraperitoneally administered with 0.5 mg/kg 2-APB; n = 8), and 2-APB-2 group (SAH rats intraperitoneally administered with 2 mg/kg 2-APB; n = 8). The rats were sacrificed after 24 hours, and superoxide dismutase, glutathione peroxidase, malondialdehyde, tumor necrosis factor-α, and interleukin-1β in the brain tissue and serum were measured. The histopathological investigation of brain tissue included measurement of the luminal diameter and wall thickness of the basilar artery (BA), and apoptotic cells in the hippocampus were counted after caspase staining. RESULTS: Autologous arterial blood injection into the cisterna magna caused vasospasm in rats. 2-APB treatment increased the BA wall thickness and reduced the BA lumen diameter, inducing significant vascular changes. 2-APB also alleviated cell apoptosis at 24 hours after SAH. CONCLUSION: In experimental SAH in rats, 2-APB treatment increased the BA wall thickness and reduced the BA lumen diameter, inducing significant vascular changes. 2-APB also alleviated cell apoptosis at 24 hours after SAH.
BACKGROUND:Cerebral vasospasm remains a serious problem affecting morbidity and mortality in patients with subarachnoid hemorrhage (SAH) during neurosurgery. We aimed to demonstrate the role of the transient receptor potential channel and other channels for Ca2+ in the etiology of cerebral vasospasm using 2-aminoethyl diphenylborinate (2-APB) and the effective dose range of an unstudied pharmacological agent, which can limit vasospasm. METHODS: We performed an experimental study using 32 Sprague-Dawley rats divided into 4 groups: sham group (n = 8), SAH group (n = 8), 2-APB group (SAHrats intraperitoneally administered with 0.5 mg/kg 2-APB; n = 8), and 2-APB-2 group (SAHrats intraperitoneally administered with 2 mg/kg 2-APB; n = 8). The rats were sacrificed after 24 hours, and superoxide dismutase, glutathione peroxidase, malondialdehyde, tumor necrosis factor-α, and interleukin-1β in the brain tissue and serum were measured. The histopathological investigation of brain tissue included measurement of the luminal diameter and wall thickness of the basilar artery (BA), and apoptotic cells in the hippocampus were counted after caspase staining. RESULTS: Autologous arterial blood injection into the cisterna magna caused vasospasm in rats. 2-APB treatment increased the BA wall thickness and reduced the BA lumen diameter, inducing significant vascular changes. 2-APB also alleviated cell apoptosis at 24 hours after SAH. CONCLUSION: In experimental SAH in rats, 2-APB treatment increased the BA wall thickness and reduced the BA lumen diameter, inducing significant vascular changes. 2-APB also alleviated cell apoptosis at 24 hours after SAH.
Authors: Jeong Hyun Jeong; Song Hee Lee; A Ra Kho; Dae Ki Hong; Dong Hyeon Kang; Beom Seok Kang; Min Kyu Park; Bo Young Choi; Hui Chul Choi; Man-Sup Lim; Sang Won Suh Journal: Int J Mol Sci Date: 2020-10-24 Impact factor: 5.923