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2015 ; 8
(4
): 5129-36
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gab.com Text
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English Wikipedia
Effects of Jiangya Xiaoke prescription on TGF-?1 in diabetic nephropathy rats
with hypertension and its mechanisms
#MMPMID26131086
Xie S
; Lu K
; Zhang Y
; Song X
; Tan M
; Wang C
Int J Clin Exp Med
2015[]; 8
(4
): 5129-36
PMID26131086
show ga
OBJECTIVE: To observe the effects of Jiangya Xiaoke prescription on transforming
growth factor-?1 (TGF-?1) in diabetic nephropathy (DN) with hypertension rats and
to investigate its mechanisms. METHODS: DN with hypertension models were made by
4 weeks high-salt diet with high sugar and fat for male Wistar rats, and
intraperitoneal injection of streptozotocin (STZ). The model rats were randomly
divided into three groups: untreated model group (n = 15); metformin group (n =
15), orally given metformin; Prescription group (n = 15), orally administrated
JXR, for 8 weeks respectively. Blood pressure was measured before modeling and
after treatment of 2, 4, 8 weeks. Fasting blood glucose (FBG), total triglyceride
(TG) and total cholesterol (TC) and urine albumin excretion (UAE) of rats were
observed and recorded. Renal histomorphology with PAS staining was observed by
the light microscope. TGF-?1 in kidney was detected by immunohistochemical assay
and TGF-?1 mRNA in renal cortex was detected by RT-PCR. RESULTS: The base blood
pressure of rats has no significant difference before modeling (P > 0.05). After
4 weeks of treatment, compared with model group, blood pressure in metformin
group decreased (P < 0.01), blood pressure in Jiangya Xiaoke prescription group
was slightly lower (P < 0.05). When 8 weeks, the rebound of blood pressure in
metformin group is appropriate with the model, the blood pressure of Jiangya
Xiaoke prescription reduced significantly (P < 0.01). Compared with model group,
FBG, UAE and TG in Jiangya Xiaoke prescription group and metformin group
significantly decreased (P < 0.01), TC levels also decreased (P < 0.05). The
level of TGF-?1 in Jiangya Xiaoke prescription group and the metformin group
decreased (P < 0.01), and level of TGF-?1 in Jiangya Xiaoke prescription group
was lower significantly than that in metformin group (P < 0.05). The mRNA
expression of TGF-?1 in Jiangya Xiaoke prescription group and the metformin group
was significantly lower than model group (P < 0.01). Pathological changes were
ameliorated in Jiangya Xiaoke prescription and metformin group compared with
model group. CONCLUSION: Jiangya Xiaoke prescription can regulate blood pressure
and improve renal functional morphology through down-regulation of TGF-?1 and its
mRNA expression in DN rats with hypertension. We initially proved that the
inhibition effect of TGF-?1 in Jiangya Xiaoke prescription is better than
metformin, and Jiangya Xiaoke prescription can lower blood pressure to normal
levels with a better step-down smoothly and a long-term efficacy.