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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Diabetologia
2015 ; 58
(12
): 2885-98
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Role of the renal sympathetic nerve in renal glucose metabolism during the
development of type 2 diabetes in rats
#MMPMID26450431
Rafiq K
; Fujisawa Y
; Sherajee SJ
; Rahman A
; Sufiun A
; Kobori H
; Koepsell H
; Mogi M
; Horiuchi M
; Nishiyama A
Diabetologia
2015[Dec]; 58
(12
): 2885-98
PMID26450431
show ga
AIMS/HYPOTHESIS: Recent clinical studies have shown that renal sympathetic
denervation (RDX) improves glucose metabolism in patients with resistant
hypertension. We aimed to elucidate the potential contribution of the renal
sympathetic nervous system to glucose metabolism during the development of type 2
diabetes. METHODS: Uninephrectomised diabetic Otsuka Long-Evans Tokushima Fatty
(OLETF) rats underwent RDX at 25 weeks of age and were followed up to 46 weeks of
age. RESULTS: RDX decreased plasma and renal tissue noradrenaline
(norepinephrine) levels and BP. RDX also improved glucose metabolism and insulin
sensitivity, which was associated with increased in vivo glucose uptake by
peripheral tissues. Furthermore, RDX suppressed overexpression of sodium-glucose
cotransporter 2 (Sglt2 [also known as Slc5a2]) in renal tissues, which was
followed by an augmentation of glycosuria in type 2 diabetic OLETF rats. Similar
improvements in glucose metabolism after RDX were observed in young OLETF rats at
the prediabetic stage (21 weeks of age) without changing BP.
CONCLUSIONS/INTERPRETATION: Here, we propose the new concept of a connection
between renal glucose metabolism and the renal sympathetic nervous system during
the development of type 2 diabetes. Our data demonstrate that RDX exerts
beneficial effects on glucose metabolism by an increase in tissue glucose uptake
and glycosuria induced by Sglt2 suppression. These data have provided a new
insight not only into the treatment of hypertensive type 2 diabetic patients, but
also the pathophysiology of insulin resistance manifested by sympathetic
hyperactivity.
|Animals
[MESH]
|Blood Pressure
[MESH]
|Diabetes Mellitus, Type 2/*metabolism/pathology
[MESH]