Tags

Type your tag names separated by a space and hit enter

Enhancement of swallowing motor activity by the ACE inhibitor imidapril in an arterially perfused rat preparation.
Eur J Pharmacol 2019; 861:172601EJ

Abstract

Pharmacological agents that elevate dopamine and substance P concentrations have been suggested to prevent aspiration pneumonia and improve impaired swallowing processes. However, little is known about the effects of such agents on swallowing activities induced in motor nerves innervating the pharyngeal and laryngeal muscles. In this study, we examined the effects of imidapril, cilostazol, and amantadine, which are often prescribed for swallowing disorders, on swallowing motor activity. We recorded the efferent activities of the cervical vagal nerve, hypoglossal nerve, and phrenic nerve using arterially perfused rats aged between 21-35 postnatal days. The vagal nerve activity was used for evaluation of swallowing motor activity. When 1.25 ml of distilled water was injected into the oral cavity, or the superior laryngeal nerve was electrically stimulated, synchronized swallowing bursts were evoked in the vagal and hypoglossal nerves, while inspiratory discharges were inhibited in all the recorded nerves. Administration of imidapril (60 ng/ml) but not cilostazol (2.5 μg/ml) and amantadine (200 ng/ml) to the perfusate increased the mean peak amplitude of orally evoked swallowing bursts in the vagal nerve. Such increase in the peak amplitude by imidapril was antagonized by the administration of the NK1 receptor antagonist aprepitant (5 μg/ml) or the D1 receptor antagonist LE300 (2.5 μg/ml). In contrast, neither imidapril nor cilostazol caused a significant increase in swallowing bursts evoked by electrical stimulation of the superior laryngeal nerve. These results suggest that imidapril treatment may improve impaired swallowing by enhancing pharyngeal muscle activities via an increase in substance P and dopamine concentrations.

Authors+Show Affiliations

Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Maxillofacial Oral Surgery, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan.Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan. Electronic address: nakayamak@den.showa-u.ac.jp.Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Periodontology, Showa University School of Dentistry, Ota-ku, Tokyo, 145-8515, Japan.Maxillofacial Oral Surgery, Showa University School of Dentistry, 2-1-1 Kitasenzoku, Ota-ku, Tokyo, 145-8515, Japan.Department of Oral Physiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31421086

Citation

Moriya, Takashi, et al. "Enhancement of Swallowing Motor Activity By the ACE Inhibitor Imidapril in an Arterially Perfused Rat Preparation." European Journal of Pharmacology, vol. 861, 2019, p. 172601.
Moriya T, Nakayama K, Nakamura S, et al. Enhancement of swallowing motor activity by the ACE inhibitor imidapril in an arterially perfused rat preparation. Eur J Pharmacol. 2019;861:172601.
Moriya, T., Nakayama, K., Nakamura, S., Mochizuki, A., Ofuji, T., Shirota, T., & Inoue, T. (2019). Enhancement of swallowing motor activity by the ACE inhibitor imidapril in an arterially perfused rat preparation. European Journal of Pharmacology, 861, p. 172601. doi:10.1016/j.ejphar.2019.172601.
Moriya T, et al. Enhancement of Swallowing Motor Activity By the ACE Inhibitor Imidapril in an Arterially Perfused Rat Preparation. Eur J Pharmacol. 2019 Oct 15;861:172601. PubMed PMID: 31421086.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhancement of swallowing motor activity by the ACE inhibitor imidapril in an arterially perfused rat preparation. AU - Moriya,Takashi, AU - Nakayama,Kiyomi, AU - Nakamura,Shiro, AU - Mochizuki,Ayako, AU - Ofuji,Takuo, AU - Shirota,Tatsuo, AU - Inoue,Tomio, Y1 - 2019/08/14/ PY - 2019/02/09/received PY - 2019/08/09/revised PY - 2019/08/09/accepted PY - 2019/8/20/pubmed PY - 2019/8/20/medline PY - 2019/8/18/entrez KW - Arterially perfused rats KW - Dopamine KW - Imidapril KW - Peripheral motor activity KW - Substance P KW - Swallowing SP - 172601 EP - 172601 JF - European journal of pharmacology JO - Eur. J. Pharmacol. VL - 861 N2 - Pharmacological agents that elevate dopamine and substance P concentrations have been suggested to prevent aspiration pneumonia and improve impaired swallowing processes. However, little is known about the effects of such agents on swallowing activities induced in motor nerves innervating the pharyngeal and laryngeal muscles. In this study, we examined the effects of imidapril, cilostazol, and amantadine, which are often prescribed for swallowing disorders, on swallowing motor activity. We recorded the efferent activities of the cervical vagal nerve, hypoglossal nerve, and phrenic nerve using arterially perfused rats aged between 21-35 postnatal days. The vagal nerve activity was used for evaluation of swallowing motor activity. When 1.25 ml of distilled water was injected into the oral cavity, or the superior laryngeal nerve was electrically stimulated, synchronized swallowing bursts were evoked in the vagal and hypoglossal nerves, while inspiratory discharges were inhibited in all the recorded nerves. Administration of imidapril (60 ng/ml) but not cilostazol (2.5 μg/ml) and amantadine (200 ng/ml) to the perfusate increased the mean peak amplitude of orally evoked swallowing bursts in the vagal nerve. Such increase in the peak amplitude by imidapril was antagonized by the administration of the NK1 receptor antagonist aprepitant (5 μg/ml) or the D1 receptor antagonist LE300 (2.5 μg/ml). In contrast, neither imidapril nor cilostazol caused a significant increase in swallowing bursts evoked by electrical stimulation of the superior laryngeal nerve. These results suggest that imidapril treatment may improve impaired swallowing by enhancing pharyngeal muscle activities via an increase in substance P and dopamine concentrations. SN - 1879-0712 UR - https://www.unboundmedicine.com/medline/citation/31421086/Enhancement_of_swallowing_motor_activity_by_the_ACE_inhibitor_imidapril_in_an_arterially_perfused_rat_preparation L2 - https://linkinghub.elsevier.com/retrieve/pii/S0014-2999(19)30553-9 DB - PRIME DP - Unbound Medicine ER -