Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 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\28936180
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Physiol
2017 ; 8
(ä): 669
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Mouse Anaphylactic Hypotension Is Characterized by Initial Baroreflex Independent
Renal Sympathoinhibition Followed by Sustained Renal Sympathoexcitation
#MMPMID28936180
Zhang T
; Tanida M
; Uchida K
; Suzuki Y
; Yang W
; Kuda Y
; Kurata Y
; Tominaga M
; Shibamoto T
Front Physiol
2017[]; 8
(ä): 669
PMID28936180
show ga
Aim: The hemodynamic response to mouse systemic anaphylaxis is characterized by
an initial hypertension followed by sustained hypotension. However, the defense
mechanisms of the sympathetic nervous system against this circulatory disturbance
is not known. Here, we investigated the renal sympathetic nerve activity (RSNA)
response to mouse systemic anaphylaxis, along with the roles of carotid sinus
baroreceptor, vagal nerves and the transient receptor potential vanilloid type 1
channel (TRPV1). Methods: Male ovalbumin-sensitized C57BL/6N mice were used under
pentobarbital anesthesia. RSNA, systemic arterial pressure (SAP) and heart rate
(HR) were continuously measured for 60 min after the antigen injection. Results:
Within 3 min after antigen injection, RSNA decreased along with a transient
increase in SAP. Thereafter, RSNA showed a progressive increase during sustained
hypotension. In contrast, HR continuously increased. Sinoaortic denervation, but
not vagotomy, significantly attenuated the renal sympathoexcitation and
tachycardia from 30 and 46 min, respectively, after antigen. The responses of
RSNA, SAP and HR to anaphylaxis were not affected by pretreatment with a TRPV1
inhibitor, capsazepine, or by genetic knockout of TRPV1. Conclusion: The mouse
systemic anaphylaxis causes a biphasic RSNA response with an initial
baroreflex-independent decrease and secondary increase. The antigen-induced
sympathoexcitation and tachycardia at the late stage are partly mediated by
carotid sinus baroreceptors. Either vagal nerve or TRPV1 does not play any
significant roles in the RSNA and HR responses in anesthetized mice.