Abstract: Objective To observe the effects of gypenosides (GPS) and ginkgo biloba extract (GBE) mixture
on plasma leptin (LP), adiponectin (APN), hepatic tissue malondialdehyde (MDA) and superoxide dismutase
(SOD) in rats with type 2 diabetes mellitus (T2DM) and non-alcoholic fatty liver disease (NAFLD). Methods
Total of 40 SPF male SD rats (body mass 220~250 g) were randomly divided into blank control group
(n = 7) and model group with T2DM and NAFLD (n = 33). After 8 weeks, the NAFLD model rats were
prepared. The model group was then divided into three subgroups: the GPS and GBE mixture intervention
group (treatrment group, n = 10) were perfused with 0.5 g/(kg·d) GPS and 0.1 g/(kg·d) GBE mixture, the GPS
intervention group (control group, n = 10) were perfused with 0.5 g/(kg·d) GPS, and the model group (n = 10)
were perfused with the same volume of water. All the groups were given high fat diet and free drinking, the
treatment course was 6 weeks and the experimental period was 14 weeks. The levels of LP and APN in plasma
and the MDA and SOD in hepatic tissue were detected. Results ①The hepatic tissue MDA level in blank group,
model group, treatment group and control group were (3.01 ± 0.10) nmol/ml, (4.78 ± 0.12) nmol/ml, (3.60 ±
0.09) nmol/ml and (4.29 ± 0.11) nmol/ml, respectively. The MDA level in treatment group was lower than that
of the control group, with a significant difference (t = 15.35, P = 0.000). ②The hepatic tissue SOD level in the
blank group, model group, treatment group and control group were (268.4 ± 15.2) U/ml, (140.6 ± 16.8) U/ml,
(224.8±15.4) U/ml, and (180.6 ± 16.0) U/ml, respectively. The SOD level in the treatment group was lower than
that of the control group, with a significant difference (t = 6.29, P = 0.000). ③The plasma APN level in the blank
group, model group, treatment group and control group were (7.98 ± 0.96) ng/ml, (4.01 ± 0.88) ng/ml, (5.92 ±
0.12) ng/ml, and (5.11 ± 0.10) ng/ml, respectively. The APN level in treatment group was lower than that of
the control group, with a significant difference (t = 16.40, P = 0.000). ④The plasma LP levels in the blank
group, model group, treatment group and control group were (2.82 ± 0.58) ng/ml, (7.89 ± 0.68) ng/ml, (4.68 ±
0.86) ng/ml, and (5.89 ± 0.76) ng/ml, respectively. The LP level in the treatment group was lower than that of
the control group, with a significant difference (t = 3.73, P = 0.004). ⑤The plasma TG levels in the blank
group, model group, treatment group and control group were (30.26 ± 2.48) ng/ml, (228.46 ± 8.48) ng/ml,
(153.12 ± 9.98) ng/ml, and (196.24 ± 9.78) ng/ml, respectively. The TG level in the treatment group was
lower than that of the control group, with a significant difference (t = 9.76, P = 0.000). Conclusion The
reduction of TG in the liver tissue deposition of rats with T2DM and NAFLD was meddled by GPS and GBE
mixture through inhibiting the lipid peroxidation and adjusting the LP/APN balance.
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