Connective tissue changes in the larynx and their effects on voice

Kahane, Joel C.

doi:10.1016/s0892-1997(87)80020-6

Cited by 117 publications

(74 citation statements)

References 14 publications

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“…It is possible that the sex difference in these effects is related to differences in the way men and women age. Anatomic studies have demonstrated greater changes in the respiratory and laryngeal systems in men than in women as they get older (Bode et al, 1976;Hirano et al, 1983;Kahane, 1983Kahane, , 1987Ximenes Filho et al, 2003), and these differences have been shown to result in larger functional effects in men (Hoit & Hixon, 1987Hoit et al, 1989;Melcon et al, 1989;Ramig & Ringel, 1983). The result of these differences in aging may be that age-related changes to the respiratory and laryngeal systems in women are not significant enough to result in a difference in respiratory support for speech, but are for men.…”

Section: Discussionmentioning

confidence: 99%

“…These changes may lead to reduced laryngeal muscle force (Baker, Ramig, Sapir, Luschei, & Smith, 2001). As with the respiratory changes, the changes in the larynx begin earlier and occur to a greater extent in men than in women (Hirano et al, 1983;Kahane, 1987;Ximenes Filho et al, 2003). Age-related anatomical changes in the larynx are likely to result in reduced glottal closure during vocal fold vibration (Biever & Bless, 1989;Honjo & Isshiki, 1980) and reduced laryngeal airway resistance (Holmes, Leeper, & Nicholson, 1994;Melcon, Hoit, & Hixon, 1989).…”

Section: Introductionmentioning

confidence: 99%

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Age-Related Changes to Speech Breathing With Increased Vocal Loudness

Huber

Spruill

2008

J Speech Lang Hear Res

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Purpose-The present study examines the effect of normal aging on respiratory support for speech when utterance length is controlled.Methods-Fifteen women (mean age 71 years) and 10 men (mean age 73 years) produced two sentences of different lengths in four loudness conditions while respiratory kinematics were measured. Measures included those related to lung volume and chest wall movements.Results-Data from the older adults were compared to data from 30 young adults, previously published. A significant age by sex effect was demonstrated. Older men produced speech at higher lung volumes than younger men. No significant differences existed between older and younger women. Older adults tended to use more abdominal movement in loud speech than younger adults, especially when talking in noise. Some of the mechanisms used by the older adults to support increased loudness in response to the cues differed from those used by the younger adults. Agerelated differences were larger when participants produced the longer utterance as compared to the shorter one.Conclusions-Reduced chest wall compliance, pulmonary elastic recoil, and laryngeal closure may explain the findings. These data can be used to help distinguish normal age-related changes from disease-related changes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Age-Related Changes to Speech Breathing With Increased Vocal Loudness

Huber

Spruill

2008

J Speech Lang Hear Res

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“…(9,21,22) Some studies have suggested that elasticity decreases in the elderly because the calcium-binding ability of elastin increases with age, although no histological changes can be detected in the elastic fibers. (21,22) An increasing number of patients are being submitted to interventional procedures involving the proportion of the volumetric density of the tissue that is occupied by elastic fibers.…”

Section: Discussionmentioning

confidence: 99%

Desnutrição materna durante a lactação em ratos Wistar: efeitos sobre as fibras elásticas da matriz extracelular na traqueia dos filhotes

et al. 2012

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Objective: To investigate the effects of maternal protein malnutrition during lactation on the elastic fibers in the tracheas of Wistar rat pups. Methods: At delivery, 12 male pups of two Wistar rat dams were equally divided into two groups: control, in which the dam received water and standard rat chow ad libitum during lactation; and protein-restricted (PR), in which the dam received water ad libitum and an isoenergetic PR diet (8% protein). At 21 days of age, the pups were killed and their tracheas were excised. The elastic fibers were stained with Weigert's resorcin-fuchsin (after oxidation) and evaluated under light microscopy. Morphometric determinations were performed by stereology, with the point-counting method, and expressed as volumetric densities. Results: Elastic fibers, most having a longitudinal distribution, were identified beneath the tracheal mucosa. In addition, well-defined circular layers of elastic fibers were found around the inner and outer surfaces of the cartilaginous ring. There were no differences between the groups regarding the organization and distribution of the elastic fibers. The volumetric density of the elastic fibers of the pups in the control and PR groups was 2.46 ± 0.99% and 3.25 ± 1.13%, respectively (p < 0.01). Conclusions: The volumetric density of elastic fibers appears to be greater in rat pups breastfed by dams receiving a PR diet than in those breastfed by dams receiving a normal diet.Keywords: Trachea/growth and development; Trachea/anatomy and histology; Extracellular matrix; Airway remodeling; Malnutrition. ResumoObjetivo: Investigar os efeitos da desnutrição proteica materna durante a lactação sobre as fibras elásticas da traqueia de filhotes de ratos Wistar. Métodos: Ao nascimento, 12 filhotes machos de duas ratas Wistar foram igualmente divididos em dois grupos: grupo controle, cuja mãe recebeu água e dieta padrão de laboratório ad libitum durante a lactação, e grupo restrição proteica (RP), cuja mãe recebeu água ad libitum e dieta isoenergética com RP (8% de proteína). Aos 21 dias de vida, os filhotes foram sacrificados, e suas traqueias foram ressecadas. As fibras elásticas foram coradas pelo método de resorcina-fucsina de Weigert (precedido de oxidação) e avaliadas sob microscopia óptica. As determinações morfométricas foram feitas por estereologia, utilizando o método de contagem de pontos, e expressas em densidade volumétrica. Resultados: As fibras elásticas foram identificadas abaixo da mucosa traqueal, sendo a maioria em distribuição longitudinal. Além disso, camadas circulares bem definidas de fibras elásticas envolviam as superfícies interna e externa do anel cartilaginoso. Não houve diferenças entre os grupos quanto à organização e distribuição das fibras elásticas. A densidade volumétrica das fibras elásticas dos filhotes nos grupos controle e RP foi de, respectivamente, 2,46 ± 0,99% e 3,25 ± 1,13% (p < 0,01). Conclusões: Nossos resultados sugerem que a densidade volumétrica de fibras elásticas é maior em filhotes de ratos alimentados por fê...

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“…Em decorrência desses inconvenientes, há a necessidade de se buscar novas opções (Chan, Titze, 1998); é preciso encontrar um material que otimize as propriedades biomecânicas da matriz extracelular da lâmina própria (Hansen, Thibeault, 2006), já que essa é considerada a estrutura mais importante da PV por estar relacionada à vibração da mucosa da mesma (Kahane, 1987;Ishii et al, 2000).…”

Section: Lista De Figurasunclassified

“…A estrutura mais importante da PV é a lâmina própria, pois está relacionada à vibração da mesma (Kahane, 1987;Ishii et al, 2000), constituída por células e por uma matriz extracelular. Como o componente celular é escasso, acredita-se que as propriedades biomecânicas da lâmina própria sejam determinadas pela matriz extracelular (Gray et al, 1987;Sato, 1998;Thibeault et al, 2002).…”

Section: Histologia Da Prega Vocalunclassified

Efeitos da injeção e reinjeção do fator de crescimento de hepatócito sobre a cicatrização de pregas vocais de coelhos

Garcia¹

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Connective tissue changes in the larynx and their effects on voice

Cited by 117 publications

References 14 publications

Age-Related Changes to Speech Breathing With Increased Vocal Loudness

Age-Related Changes to Speech Breathing With Increased Vocal Loudness

Desnutrição materna durante a lactação em ratos Wistar: efeitos sobre as fibras elásticas da matriz extracelular na traqueia dos filhotes

Efeitos da injeção e reinjeção do fator de crescimento de hepatócito sobre a cicatrização de pregas vocais de coelhos

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