Age-related variation of lung intervascular connective tissue at different stages of postnatal histogenesis
- Authors: Nickel’ VV1, Kasimtsev AA1, Efremova VP1
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Affiliations:
- Krasnoyarsk State Medical University named after V.F. Voino-Yasenecky, Krasnoyarsk, Russia
- Issue: Vol 95, No 2 (2014)
- Pages: 240-244
- Section: Theoretical and clinical medicine
- URL: https://journals.rcsi.science/kazanmedj/article/view/2072
- DOI: https://doi.org/10.17816/KMJ2072
- ID: 2072
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Abstract
Aim. To study the structure of lung intervascular connective tissue at different stages of postnatal histogenesis. Methods. Lung autopsies from 20 mature males aged 22-35 years, 30 males aged 61-74 years and 30 males aged 75-89 years who died of causes unrelated to respiratory diseases were studied using standard histological techniques. Results. In lungs of young males, two separated zones of intervascular connective tissue - the central and peripheral, which differ in fiber quantity and their spatial orientation - were revealed. Collagen fibers were the main component of the extracellular matrix of lungs, accounting for 69.9% [69.5, 70.7] of matrix. The share of the base material was 30.1% [29.4, 30.5]. For older age, the share of collagen fibers increased together with decrease of the shares of elastic and reticular fibers up to the complete absence of the latter in subjects over 75 years of age. Strands of collagen fibers were strongly deformed, twisted spirally, clustered in thick bundles. Conclusion. Described age-related changes of lung intervascular connective tissue may reduce the vascular wall contractility, affecting the pulmonary circulation.
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##article.viewOnOriginalSite##About the authors
V V Nickel’
Krasnoyarsk State Medical University named after V.F. Voino-Yasenecky, Krasnoyarsk, Russia
Email: vica-nic@mail.ru
A A Kasimtsev
Krasnoyarsk State Medical University named after V.F. Voino-Yasenecky, Krasnoyarsk, Russia
V P Efremova
Krasnoyarsk State Medical University named after V.F. Voino-Yasenecky, Krasnoyarsk, Russia
References
- Автандилов Г.Г. Медицинская морфометрия. - М.: Медицина, 1990. - 384 с.
- Атакулов Б.М., Ашуров А.А., Габченко А.Г. Морфологические изменения соединительной ткани в сосудах лёгких при пневмонии пециломикозной этиологии у детей до года // Морфология. - 2002. - №2-3. - С. 14.
- Высоцкий Ю.А., Лепилов А.В., Деханд Е.П. Возрастные особенности организации соединительнотканного остова некоторых органов человека. - Красноярск, 2005. - С. 46.
- Дусчанов Б.А., Рузметов У.А., Курязов А.К. Изменения лёгких при экспериментальном хроническом воспалении // Морфология. - 2004. - №4. - С. 44.
- Елисеев В.Г. Основы гистологии и гистологической техники. - М.: Медицина, 1967. - 268 с.
- Устюжанинова Н.В., Шишкин Г.С. Возрастные изменения межальвеолярных перегородок и их отношение к замедлению газообмена // Морфология. - 2002. - №1. - С. 84-88.