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Abnormal palatopharyngeal muscle morphology in sleep-disordered breathing
Malmö University Hospital.
Umeå universitet, Medicinska fakulteten, Institutionen för integrativ medicinsk biologi (IMB), Anatomi.
2002 (engelsk)Inngår i: Journal of the Neurological Sciences, ISSN 0022-510X, E-ISSN 1878-5883, Vol. 195, nr 1, s. 11-23, Article Number: PII S0022-510X(01)00676-1Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The aim of the present study was to investigate whether histopathological changes can be detected in two soft palate muscles, the palatopharyngeus and the uvula, in 11 patients with long duration of sleep-disordered breathing (SDB). Muscle samples were collected from patients undergoing uvulo-palatopharyngoplasty (UPPP). Reference samples from the corresponding areas were obtained at autopsy from five previously healthy subjects. Muscle morphology, fibre type and myosin heavy chain (MyHC) compositions were analysed with enzyme-histochemical, immunohistochemical and biochemical techniques. The muscle samples from the patients, and especially those from the palatopharyngeus, showed several morphological abnormalities. The most striking findings were (i) increased amount of connective tissue, (ii) abnormal variability in fibre size, (iii) increased proportion of small-sized fibres, (iv) alterations in fibre type and MyHC compositions, (v) increased frequency of fibres containing developmental MyHC isoforms. Our findings point towards a pathological process of denervation and degeneration in the patient samples. Conclusively, the morphological abnormalities suggest a neuromuscular disorder of the soft palate in SDB patients.

sted, utgiver, år, opplag, sider
Elsevier, 2002. Vol. 195, nr 1, s. 11-23, Article Number: PII S0022-510X(01)00676-1
Emneord [en]
sleep-disordered breathing, snoring, apnea, soft palate, muscle, fibre types, myosin
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-82660DOI: 10.1016/S0022-510X(01)00676-1ISI: 000174847900002PubMedID: 11867069OAI: oai:DiVA.org:umu-82660DiVA, id: diva2:662100
Tilgjengelig fra: 2013-11-06 Laget: 2013-11-06 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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