open access

Vol 62, No 3 (2003)
SHORT COMMUNICATIONS
Published online: 2003-06-09
Submitted: 2012-02-06
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Adrenergic and cholinergic innervation of pulmonary tissue in the pig

Aleksandra Wojtarowicz, Piotr Podlasz, Krzysztof Czaja
Folia Morphol 2003;62(3):215-218.

open access

Vol 62, No 3 (2003)
SHORT COMMUNICATIONS
Published online: 2003-06-09
Submitted: 2012-02-06

Abstract

Both the adrenergic and the cholinergic components of the autonomic nervous system (ANS) have been found to be an important source of nerve fibres supplying the lungs. On the other hand, data regarding the innervation of the pulmonary tissue in breeding animals are surprisingly scarce. Therefore, in the present study noradrenergic and acetylcholinesterase-positive (AChE-positive) innervation of the lungs of sexually immature pigs was studied using histochemical methods. Studies were performed on six juvenile female pigs (aged 9 weeks, body weight 15–20 kg). Samples of the tissue were collected from the caudal lobe of the right lung. 10µm cryostat sections were processed for the sucrosepotassium phosphate-glyoxylic acid technique to determine the occurrence and distribution of noradrenergic nerve fibres, while AChE-positive nerves were detected according to the acetylcholinesterase histochemistry. The present results revealed a dense network of noradrenergic nerve fibres localised mainly in the muscular membrane surrounding the epithelium of the bronchuli while AChE-positive nerve terminals supplied functional capillary vessels localised in the inter-alveolar septum and mucous membrane of the bronchi and bronchuli. The results of the present study confirm those of physiological experiments reporting the influence of the adrenergic and cholinergic components of the autonomic nervous system on the lung functions of pigs.

Abstract

Both the adrenergic and the cholinergic components of the autonomic nervous system (ANS) have been found to be an important source of nerve fibres supplying the lungs. On the other hand, data regarding the innervation of the pulmonary tissue in breeding animals are surprisingly scarce. Therefore, in the present study noradrenergic and acetylcholinesterase-positive (AChE-positive) innervation of the lungs of sexually immature pigs was studied using histochemical methods. Studies were performed on six juvenile female pigs (aged 9 weeks, body weight 15–20 kg). Samples of the tissue were collected from the caudal lobe of the right lung. 10µm cryostat sections were processed for the sucrosepotassium phosphate-glyoxylic acid technique to determine the occurrence and distribution of noradrenergic nerve fibres, while AChE-positive nerves were detected according to the acetylcholinesterase histochemistry. The present results revealed a dense network of noradrenergic nerve fibres localised mainly in the muscular membrane surrounding the epithelium of the bronchuli while AChE-positive nerve terminals supplied functional capillary vessels localised in the inter-alveolar septum and mucous membrane of the bronchi and bronchuli. The results of the present study confirm those of physiological experiments reporting the influence of the adrenergic and cholinergic components of the autonomic nervous system on the lung functions of pigs.
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Keywords

lungs; adrenergic nerves; cholinergic nerves; pig

About this article
Title

Adrenergic and cholinergic innervation of pulmonary tissue in the pig

Journal

Folia Morphologica

Issue

Vol 62, No 3 (2003)

Pages

215-218

Published online

2003-06-09

Bibliographic record

Folia Morphol 2003;62(3):215-218.

Keywords

lungs
adrenergic nerves
cholinergic nerves
pig

Authors

Aleksandra Wojtarowicz
Piotr Podlasz
Krzysztof Czaja

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