Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\29643854
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Immunol
2018 ; 9
(ä): 624
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
The Role of Quinine-Responsive Taste Receptor Family 2 in Airway Immune Defense
and Chronic Rhinosinusitis
#MMPMID29643854
Workman AD
; Maina IW
; Brooks SG
; Kohanski MA
; Cowart BJ
; Mansfield C
; Kennedy DW
; Palmer JN
; Adappa ND
; Reed DR
; Lee RJ
; Cohen NA
Front Immunol
2018[]; 9
(ä): 624
PMID29643854
show ga
BACKGROUND: Bitter (T2R) and sweet (T1R) taste receptors in the airway are
important in innate immune defense, and variations in taste receptor
functionality in one T2R (T2R38) correlate with disease status and disease
severity in chronic rhinosinusitis (CRS). Quinine is a bitter compound that is an
agonist for several T2Rs also expressed on sinonasal cells, but not for T2R38.
Because of this property, quinine may stimulate innate immune defense mechanisms
in the airway, and functional differences in quinine perception may be reflective
of disease status in CRS. METHODS: Demographic and taste intensity data were
collected prospectively from CRS patients and non-CRS control subjects. Sinonasal
tissue from patients undergoing rhinologic surgery was also collected and grown
at an air-liquid interface (ALI). Nitric oxide (NO) production and dynamic
regulation of ciliary beat frequency in response to quinine stimulation were
assessed in vitro. RESULTS: Quinine reliably increased ciliary beat frequency and
NO production in ALI cultures in a manner consistent with T2R activation
(p?0.01). Quinine taste intensity rating was performed in 328 CRS patients and
287 control subjects demonstrating that CRS with nasal polyps (CRSwNP) patients
rated quinine as significantly less intense than did control subjects.
CONCLUSION: Quinine stimulates airway innate immune defenses by increasing
ciliary beat frequency and stimulating NO production in a manner fitting with T2R
activation. Patient variability in quinine sensitivity is observed in taste
intensity ratings, and gustatory quinine "insensitivity" is associated with
CRSwNP status. Thus, taste tests for quinine may be a biomarker for CRSwNP, and
topical quinine has therapeutic potential as a stimulant of innate defenses.