Ultrastructural Comparison Between Tympanosclerosis and Atherosclerosis
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Research Article
P: 137-144
September 2005

Ultrastructural Comparison Between Tympanosclerosis and Atherosclerosis

Turk Arch Otorhinolaryngol 2005;43(3):137-144
1. Department of Otorhinolaryngology, Head & Neck Surgery, Haseki Education and Research Hospital, İstanbul
2. Department of Otorhinolaryngology, Medical Faculty of Marmara University, İstanbul
No information available.
No information available
Accepted Date: 03.01.2005
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ABSTRACT

Objectives:

The aim of this study is to identify the shared similar characteristics of tympanosclerosis and atherosclerosis on light and electron microscopy and to find out if there is a genetic predisposition between these two conditions.

Methods:

Tympanosclerotic materials were taken from 7 patients who were operated on due to chronic otitis media and atherosclerotic materials were taken from 4 patients on whom coronary arterial bypass grafting operations had been performed. Tympanosclerotic and atherosclerotic specimens were examined under light and electron microscopy.

Results:

In the examination of the specimens, the important common characteristics in both specimen groups were increase in collagen fibers, presence of calcified areas, increase of the infectious cells and especially the fibroblasts.

Conclusion:

In tympanosclerosis and atherosclerosis, the basic mechanism of the reaction goes through the same routes. Both the ultrastructural similarities between atherosclerosis and tympanosclerosis as well as the sexual difference seen in each of the two diseases, in addition to the incidence of tympanosclerosis observed on atherosclerotic patients in comparison to the normal population, is indicating that the genetic-familial predisposition of sclerotic changes is shared by all tissues, and that tympanosclerosis must be the appearance of the same genetic characteristic in the middle ear.

ÖZET

Amaç:

Çalışmanın amacı, timpanoskleroz ile ateroskleroz arasındaki ultrastrüktürel benzerlikleri, ışık mikroskobu ve elektron mikroskobu incelemeleri ile ortaya koyarak, sklerotik dejenerasyona karşı olası bir genetik predispozisyonu araştırmaktır.

Yöntem:

Kronik otitis media nedeniyle opere edilen 7 hastadan tim-panosklerotik materyal ve koroner arteriyel by-pass greftleme operasyonu uygulanan 4 hastadan aterosklerotik materyal alınarak ışık ve elektron mikroskobu ile incelenmiştir.

Bulgular:

Spesmenlerin incelenmesinde; her iki spesmen grubunda da görülen önemli ortak özellikler, kollajen fibrillerde artış, kalsifiye alanların varlığı, infeksiyon hücrelerinin ve fibroblastların varlığı idi.

Sonuç:

Timpanoskleroz ve aterosklerozda, reaksiyon temel olarak aynı yolu izler. Her iki hastalıkta gözlenen ultrastrüktürel değişiklikler benzerdir ve her iki hastalıkta da cinsiyet farkı mevcuttur. Bu bulgular ile birlikte, aterosklerotik bireylerde timpanoskleroz görülme insidansının normal popülasyona göre fazla olması; tüm vücut dokularında sklerotik dejenerasyona karşı bir genetik-ailesel yatkınlığın varolabileceğini düşündürmektedir. Timpanoskleroz, bu genetik karakteristiğin orta kulaktaki görüntüsü olabilir.

Keywords:
Tympanosclerosis, atherosclerosis, calcification, genetic predisposition.