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2016 ; 6
(ä): 26563
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Protamine zinc insulin combined with sodium selenite improves glycometabolism in
the diabetic KKAy mice
#MMPMID27212152
Lu J
; Ji W
; Zhao M
; Wang M
; Yan W
; Chen M
; Ren S
; Yuan B
; Wang B
; Chen L
Sci Rep
2016[May]; 6
(ä): 26563
PMID27212152
show ga
Long-term, high dosage protamine zinc insulin (PZI) treatments produce adverse
reactions. The trace element selenium (Se) is a candidate for the prevention of
diabetes due to anti-oxidative stress activity and the regulation of
glycometabolism. In this study, we aimed to investigate the anti-diabetic effects
of a combination of PZI and Se on type 2 diabetes. Diabetic KKAy mice were
randomized into the following groups: model group and groups that were
subcutaneously injected with PZI, Se, high or low dose PZI + Se for 6 weeks. PZI
combined with Se decreased the body weight and fasting blood glucose levels.
Moreover, this treatment also improved insulin tolerance, as determined by the
reduced values from the oral glucose tolerance test and insulin tolerance test,
and increased insulin levels and insulin sensitivity index. PZI combined with Se
ameliorated skeletal muscle and ?-cell damage and the impaired mitochondrial
morphology. Oxidative stress was also reduced. Furthermore, PZI combined with Se
upregulated phosphatidylinositol 3-kinase (PI3K) and downregulated protein
tyrosine phosphatase 1B (PTP1B). Importantly, the low dosage combination produced
effects similar to PZI alone. In conclusion, PZI combined with Se improved
glycometabolism and ameliorated the tissue and mitochondrial damage, which might
be associated with the PI3K and PTP1B pathways.
|Animals
[MESH]
|Blood Glucose/*drug effects
[MESH]
|Body Weight/drug effects
[MESH]
|Diabetes Mellitus, Type 2/blood/*drug therapy/metabolism
[MESH]