An immunohistochemical study on the innervation of SP-IR nerves in the cerebral arteries of the bent-winged bat |
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Authors: | K Andö A Ishikawa K Kawamura T Toda S Arai |
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Institution: | (1) Biological Laboratory, Liberal Arts, Kyushu Sangyo University, Matukadai, Higashi-ku, 813 Fukuoka, Japan;(2) Department of Pathology, School of Medicine, Nanakuma, Jonan-ku, 814-01 Fukuoka, Japan;(3) Clinical Laboratory, University Hospital, University of the Ryukyus, Uehara, Nishihara-machi, 903-1 Okinawa, Japan;(4) Department of Oral Anatomy, Kyushu Dental College, Manazuru, Kokura-Kita, 803 Kitakyushu, Japan |
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Abstract: | Summary The overall distribution of substance P (SP) immunoreactive (IR) nerves surrounding the cerebral arteries of the bent-winged bat were investigated immunohistochemically. In this microchiropteran species, the walls from the vertebral artery to the caudal part of the basilar artery have considerably well-developed plexuses of SP-IR nerves, whereas no demonstrable SP-IR fibers were found in the crostral part of the basilar artery, and in more rostrally located arteries the nerve supply was very sparse or occasionally lacking. This innervation pattern has not yet been established for the cerebral arterial systems of other mammals that have been studied under normal conditions, but it is very similar to the pattern of SP-IR innervation observed in the guinea pig and cat of which the trigeminal ganglia have been destroyed. From the combination of this and other immunohistochemical findings, it is suggested that SP-IR nerves innervating the vertebral and basilar arteries of the bent-winged bat originate from the upper cervical dorsal root ganglia (DRG) and enter the cranial cavity along the vertebral artery and through the meninges.Abbreviations BA
basilar artery
- CSN
cervical spinal nerves
- ICS
internal carotid system
- SCG
superior cervical ganglion
- SNB
sympathetic nerve bundle
- VA
vertebral artery
- VBS
vertebro-basilar system |
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