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2016 ; 7
(ä): 6
Nephropedia Template TP
gab.com Text
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English Wikipedia
The Protective Effect of ?-aminobutyric Acid on Kidney Injury Induced by Renal
Ischemia-reperfusion in Ovariectomized Estradiol-treated Rats
#MMPMID26941907
Talebi N
; Nematbakhsh M
; Monajemi R
; Mazaheri S
; Talebi A
; Vafapour M
Int J Prev Med
2016[]; 7
(ä): 6
PMID26941907
show ga
BACKGROUND: Renal ischemia-reperfusion injury (IRI) is one of the most important
causes of kidney injury, which is possibly gender-related. This study was
designed to investigate the role of ?-aminobutyric acid (GABA) against IRI in
ovariectomized estradiol-treated rats. METHODS: Thirty-five ovariectomized Wistar
rats were used in six experimental groups. The first three groups did not subject
to estradiol treatment and assigned as sham-operated, control, and GABA-treated
groups. GABA (50 ?mol/kg) and saline were injected in the treated and control
groups 30 min before the surgery, respectively. The second three groups received
the same treatments but received estradiol valerate (500 ?g/kg, intramuscularly)
3 days prior to the surgery. The IRI was induced in the control and treated
groups by clamping the renal artery for 45 min and then 24 h of reperfusion. All
animals were sacrificed for the measurements. RESULTS: The serum levels of
creatinine and blood urea nitrogen, kidney weight, and kidney tissue damage score
significantly increased in the IRI rats (P < 0.05). GABA significantly decreased
the aforementioned parameters (P < 0.05). The uterus weight increased
significantly in rats that received estradiol (P < 0.05). Serum and kidney levels
of nitrite (nitric oxide metabolite) did not alter significantly. Serum level of
malondialdehyde increased significantly in the ovariectomized rats exposed to IRI
(P < 0.05). CONCLUSIONS: It seems that GABA improved IRI in ovariectomized rats.
Estradiol was also nephroprotective against IRI. However, co-administration of
estradiol and GABA could not protect the kidney against IRI.