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Swallowing Reflex (swallowing + reflex)
Selected AbstractsEFFECT OF TEMPERATURE ON SWALLOWING REFLEX IN ELDERLY PATIENTS WITH ASPIRATION PNEUMONIAJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 12 2004Aya Watando MD No abstract is available for this article. [source] ACUPUNCTURE AND SWALLOWING REFLEX IN POSTSTROKE PATIENTSJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 5 2003Article first published online: 29 APR 200 No abstract is available for this article. [source] Neurochemical regulation of swallowing reflex in guinea pigsGERIATRICS & GERONTOLOGY INTERNATIONAL, Issue 1-2 2001Yu X Jia Background: Most peripheral afferent fibers involved in swallowing travel through the glossopharyngeal and vagus nerves and terminate in the nucleus of the tractus solitarius (NTS) and nodose ganglion (NG). Sensory neurons within the NTS and NG contain several neurotransmitters, including acetylcholine, histamine, serotonin and dopamine. The roles of these four neurotransmitters were investigated. Methods: The effects of atropine (muscarinic cholinergic receptor antagonist); pyrilamine maleate (PM, histamine H1 receptor antagonist); cimetidine (histamine H2 receptor antagonist); 8-hydroxy-2-(di- n -propylamino)-tetralin (8-OH-DPAT, specific 5-HT1A receptor agonist); and selective dopamine D1 receptor antagonist (Sch-23390) on the number of swallows elicited by distilled water in anesthetized guinea pigs were investigated. Results: Atropine (0.2 mg/kg) inhibited swallowing by approximately 70%; PM (30 mg/kg) inhibited swallowing by approximately 60%; cimetidine (30 mg/kg) inhibited swallowing by approximately 52.9% and Sch-23390 (chronic treatment) inhibited swallowing by approximately 40%. In contrast, 8-OH-DPAT did not alter the number of swallows. Chronic pretreatment of Sch-23390 markedly decreased the substance P (SP) content in the pharyngeal mucosa and the esophagus. Conclusion: These findings indicate that acetylcholine, histamine and dopamine are involved in the regulation of the swallowing reflex, whereas it is unlikely that serotonin is involved. [source] Capsaicin Troche for Swallowing Dysfunction in Older PeopleJOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 5 2005Takae Ebihara MD Objectives: To determine whether oral capsaicin troche supplementation with every meal upregulates the impairment of upper respiratory protective reflexes such as the swallowing reflex and the cough reflex. Design: Randomized, controlled study with recruitment through nursing homes. Setting: Sendai, Japan, from September 2002 through December 2003. Participants: Sixty-four participants in nursing homes with a mean ageħstandard deviation of 81.9ħ1.0 with stable physical status. Intervention: Participants were randomly assigned to the program for the supplementation of capsaicin trochisci or placebo trochisci before every meal for 4 weeks. Measurements: Assessment of individual latency time of the swallowing reflex (LTSR) and cough reflex sensitivity. Results: Before the commencement of this study, there were no significant baseline differences in multiple parameters between the intervention group and control group. LTSR in participants in the intervention group was significantly shorter than in the control group (P<.05). The odds ratio (OR) of the shortening of the LTSR of more than 1 minute in the intervention group was 3.4 (95% confidence interval (CI)=1.1,10.4), compared with the control group (P=.03). In particular, daily capsaicin supplementation significantly increased the ratio of LTSR reduction at 4 weeks after the study to baseline LTSR in the high-risk group (baseline LTSR >6.0 seconds) compared with the low-risk group (baseline LTSR <3.0 seconds) and the intermediate group (3.0 seconds Influences of body posture on duration of oral swallowing in normal young adultsJOURNAL OF ORAL REHABILITATION, Issue 6 2007D. INAGAKI Summary, The primary purpose of this study was to determine whether body posture altered the duration of oral swallowing. To answer this question, we recorded electromyograms (EMGs) from the anterior tongue and suprahyoid (SH) muscles as well as laryngeal movement associated with swallowing in nine normal young subjects. The subjects swallowed a test food after receiving a signal while in four randomly set postures: upright, two inclined (60° and 30° to the horizontal), and supine positions. We measured the durations from the start to the peak and from the peak to the end of the integrated tongue and SH EMGs. We assumed that the duration from the start to the peak of the integrated SH EMG would correspond to the duration of oral swallowing. The average duration from the start to the peak of the integrated SH EMG decreased after moving from the upright to the inclined and supine positions. The decrease in the duration was statistically significant and consistent for three experimental sessions. The duration from the start to the peak of the integrated tongue EMG during swallowing tended to decrease after lying down, but not significantly. The postural changes did not affect the remaining four durations. The decrease in the duration of oral swallowing induced by lying down suggests that the gravitational force placed on the test food facilitates the swallowing reflex. Large variation in the tongue activity during swallowing among the subjects can probably be attributed to the lack of a significant decrease in the duration of the tongue activity. [source]
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