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Microstructure of the vocal fold in elderly humans
Clinical anatomy (New York, N.Y.), 2011-07, Vol.24 (5), p.544-551
Roberts, T.
Morton, R.
Al-Ali, S.
2011
Details
Autor(en) / Beteiligte
Roberts, T.
Morton, R.
Al-Ali, S.
Titel
Microstructure of the vocal fold in elderly humans
Ist Teil von
Clinical anatomy (New York, N.Y.), 2011-07, Vol.24 (5), p.544-551
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2011
Link zum Volltext
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
Significant changes in the voice occur after the age of 50 years. Changes in the structure of the vocal fold (VF) can interfere with the voice. The aim of this study is to investigate the structure of the VF of elderly people that may contribute to the tendency of the human voice to deteriorate. Larynges were obtained from eight embalmed cadavers aged 72–98 years. The middle portion of each vocal fold was removed and placed in 4% buffered formalin. Tissue blocks were then processed and embedded in wax. Four to six micron coronal sections were cut and stained with Haematoxylin and Eosin (H&E), Masson's Trichrome (MTS), Elastin van Gieson (EVG), Herovici (HERO), picrosirius and CD31 immunohistochemical marker in order to study the collagen fibers, elastic fibers and microvasculature of the VF. The maturity of collagen fibers within the VF were noted to increase from the superficial to the deep layer of the lamina propria (LP). Contrary to current literature, the amount of elastic fibers was sparse in the superficial layer of the LP in the vocal tissue of elderly cadavers. Numerous cross‐sectioned blood vessels were seen in the lamina propria near the free edge, and near the superior and inferior surfaces of the VF. The presence of lymphatic vessels was confirmed in the VF of elderly subjects. This study revealed that the collagenous component of the deep layer of the VF LP was made up of mature fibers whilst immature collagen fibers made up the superficial layer of the LP. There was a notable scarcity of elastic fibers in the superficial layer of the LP. Lymphatics were seen and were orientated differently in the geriatric vocal folds. Clin. Anat. 24:544–551, 2011. © 2011 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0897-3806
eISSN: 1098-2353
DOI: 10.1002/ca.21114
Titel-ID: cdi_proquest_miscellaneous_871003299
Format
–
Schlagworte
Age Factors
,
Aged
,
Aged, 80 and over
,
Aging - physiology
,
Biomarkers - metabolism
,
Blood Vessels
,
Cadaver
,
Collagen - metabolism
,
Elastic Tissue - pathology
,
Female
,
human
,
Humans
,
Immunohistochemistry
,
lamina propria
,
Lymphatic Vessels
,
Male
,
old age
,
Vocal Cords - blood supply
,
Vocal Cords - metabolism
,
Vocal Cords - pathology
,
vocal folds
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