Bookcover of Epithelial Mechanisms in Airway Responses Induced by Hyperosmolarity
Booktitle:

Epithelial Mechanisms in Airway Responses Induced by Hyperosmolarity

Application of a novel apparatus in understanding the mechanisms of exercise-induced asthma

VDM Verlag Dr. Müller (2009-09-18 )

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ISBN-13:

978-3-639-19868-3

ISBN-10:
3639198689
EAN:
9783639198683
Book language:
English
Blurb/Shorttext:
Hyperventilation during exercise causes evaporative water loss and hyperosmolarity of the airway surface liquid. Mucosal hyperosmolar challenge elicits airway transepithelial potential (Vt) changes followed by muscle relaxation mediated by epithelium- derived relaxing factor (EpDRF). In many cell types ion transport and functional responses are regulated by kinase signaling. We hypothesize that hyperosmolar challenge activates stress-sensitive protein kinases (PK)s in epithelium, and that the activity of PK(s) regulates epithelial bioelectric events and EpDRF release. Using a novel guinea-pig trachea perfusion apparatus, we examined the effects of ion transport blockers and kinase inhibitors on the relationship of Vt and relaxation responses induced by hyperosmolar D-mannitol. The results indicate that the epithelial bioelectric and muscle relaxation responses are not regulated by a common kinase signaling pathway. JNK and PKC regulate the hyperosmolarity-induced hyperpolarization. Inhibition of p38 potentiated the airway relaxation elicited by hyperosmolarity, thus p38 inhibitors have the treatment potential for exercise-induced asthma.
Publishing house:
VDM Verlag Dr. Müller
Website:
http://www.vdm-verlag.de
By (author) :
Yi Jing
Number of pages:
168
Published on:
2009-09-18
Stock:
Available
Category:
Pharmacy
Price:
68.00 €
Keywords:
airway epithelium, kinase signaling, exercise-induced asthma, hyperosmolarity, cell volume, ion transport, cell volume

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