Kim, Shin-Seok;Choi, Jong-Won;Lee, Kyung-Hee;Lee, Cheol-Whan
The Journal of Korean Medicine
/
v.16
no.2
s.30
/
pp.337-347
/
1995
The purpose of this study was to investigate the effect of pretreatment with Saegchinyanghyoltang(SYT) on the serum lipid composition and atherosclerotic index in streptozotocin(STZ)-induced diabetic rats. SYT pretreatment in STZ-induced diabetic rats inhibited the rise of serum glucose concentration. Serum total lipids and triglyceride levels in the STZ -induced diabetic rats were significantly higher than those in the control group. But in the group pretreated with SYT, triglyceride and lipid levels were significantly lower compared with those of STZ -induced diabetic rat group without STZ. However, the serum phospholipid levels were not statistically different among treatment groups. In the STZ-induced diabetic group, the serum total cholesterol, VLDL-, LDL-cholesterol levels and atherosclerotic index Were higher and HDL-cholesterol level was lower compared to the control group. However, these changes were prevented by SYT pretreatment Pretreatment with SYT significantly increased the activities of serum lipase compared to the STZ-treated group.
Kim, Hyun-Jeong;Lee, Sung-Gyu;Park, Sung-Jin;Yu, Mi-Hee;Lee, Eun-Ju;Lee, Sam-Pin;Lee, In-Seon
Korean Journal of Food Science and Technology
/
v.44
no.3
/
pp.367-372
/
2012
Antioxidant and anti-hyperglycemic activities of fermented red ginseng added with 5 kinds of medicinal herbs (FRGM) were investigated in vitro. Total polyphenol and total flavonoid contents in FRGM extracts were $22.41{\pm}3.51$ and $16.80{\pm}4.22{\mu}g/mg$, respectively. FRGM extracts were capable of directly scavenging DPPH free radicals ($RC_{50}=95.57{\pm}7.40{\mu}g/mL$), and then showed higher inhibitory activities for ${\alpha}$-glucosidase. This study was also conducted to evaluate the effects of FRGM extracts in streptozotocin (STZ)-induced diabetic (DM) rats. The activities with regards to serum aspartate aminotransferase and alanine aminotransferase were significantly decreased by FRGM extracts compared to those from the STZ group. The hepatic glutathione content depleted by STZ was significantly increased by FRGM extracts, but elevation of lipid peroxide content induced by STZ was significantly decreased by FRGM extracts. The decreased activities of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase after STZ-treatment were increased through the treatment of FRGM extracts. These results indicated that fermented red ginseng added with medicinal herbs can protect against STZ-induced diabetic rats through its antioxidant properties.
Park, Sa-hyun;Cho, Su-in;Chae, Woo-seok;Cho, Myung-rae
Journal of Acupuncture Research
/
v.22
no.1
/
pp.1-11
/
2005
Objective : The present study was carried out to investigate the preventive effect of Several Herb-combind Prescription(SHP) on Streptozotocin (STZ) -induced Diabetes mellitus. Methods : SHP was given to rats with the combination of oral administration and herbal-acupuncture stimulation. The experimental animals were divided into 3 groups : normal group of rats, control group of STZ-induced diabetic rats, sample group with SHP treatment. In vitro test of SHP showed ${\alpha}$-glucosidase inhibition, DPPH radical scavenging activity and inhibition of lipid peroxidation. Experimental diabetes was induced by the injection of STZ(60mg/kg) to the rat via the peritoneum. The effect of SHP on STZ-induced diabetes was observed by measuring the seum level of insulin, glucose, triglyceride, total cholesterol and lipid peroxides. Hepatic activities of catalase and reduced glutathione were examined and insulin granule was observed by immunohistochemical examination. Result : STZ caused hyperglycemia and hypoinsulinemia by a selectively destroying pancreatic ${\beta}$-cell. SHP treatment protected them from the hyperglycemia and hypoinsulinemia. STZ induced increase of serum triglyceride lowered by SHP treatment. And by SHP treatment, pancrease showed a big area with positive immuno-reactivity for presence of insulin with many insulin granules distributed in the ${\beta}$-cells in the islets of Langerhans. Contusions : The SHP treatment showed protective effect on diabetic rat model, and action mechanism of the effect was thought to be concerned with anti-oxidative stress.
The present study, to evaluate the effect of vitamin E on the oxidative stress in STZ-treated rat and BB rat, was investigated the biochemical enzyme activity in the serum, and malondialdehyde and carbonyl group in the RBC membrane, liver and microsomal fraction after vitamin E and/ or insulin treatment. Results obtained through the experiments were summarized as follows; 1. Effect of vitamin E and/or insulin treatment in STZ-treated rat 1) Lipid peroxidation level in RBC membrane, liver and microsomal fraction was significantly decreased in vi. tamin E and/or insulin treatment group, and especially more significantly decreased in vitamin E with insulin treated group. 2) Protein oxidation level in RBC membrane, liver and microsomal fraction was significantly decreased in vitamin E and/or insulin treatment group. And it was especially more significantly decreased in RBC membrane and liver of vitamin E with insulin treated group. 3) In the enzyme activity in the serum, the activity of AST and ALT was not altered in all experimental group. The increased ALP activity in STZ-treated group was significantly decreased in insulin treated group and vitamin E with insulin treated group. 4) Decreased level of albumin and creatinine after STZ treatment was significantly increased in vitamin E and/or insulin treated group. 5) Level of glucose, cholesterol and triacylglycerol in serum: Glucose level was not significantly different in vitamin E treated group compared to STZ control group. But it was significantly different in the insulin treated group and vitamin E with insulin treated group compared to STZ control group. The cholesterol content in the serum was significantly increased in STZ control group compared to normal control group. And except low dose vitamin E treatment group, it was significantly decreased in vitamin E and/or insulin treated group compared to STZ control group. The triacylglycerol content in the serum was significantly decreased in STZ control group and increased in high dose vitamin E treated group and vitamin E with insulin treated group. But it was not significantly different in low dose vitamin E treated group and insulin treated group compared to STZ control group. 2. Effect of vitamin E and/or insulin treatment in BB rat 1) Lipid peroxidation level in liver was decreased by vitamin E with insulin treatment compared to insulin treatment. But it was not different in microsomal fractions. 2) Protein oxidation level in liver and microsomal fraction was decreased by vitamin E with insulin treatment compared to insulin treatment only in microsomal fractions. These results suggest that the combination treatment of vitamin E and insulin could prevent the oxidative change of lipid and protein of the RBC membrane, liver and microsomal fraction in STZ-treated rats and BB rats.
Objective : The aim of the study was to investigate the preventive effect of Acanthopanax senticosus(AS) aqua-acupuncture into Sinsu(BL23) of the multiple low-does strepozotocin(STZ)-induced diabetic rats. Methods : The experimental animals were divided into 4 groups : normal group of rats, control group of multiple low-does STZ-induced diabetic rats, NSAA group with 0.4ml normal saline(NS) aqua-acupunctured subcutaneously into Sinsu in multiple low-does STZ-induced diabetic rats, and ASAA group with 0.4ml of 20% AS aqua-acupunctured subcutaneously into Sinsu in multiple low-does STZ-induced diabetic rats. Each of AS and NS aqua-acupuncture was done subcutaneously into both loci of Sinsu taking turns everyday for 3 weeks. Thereafter the levels of serum glucose, body weight, index of kidney hypertrophy, urine glucose, urinary albumin excretion, creatinine clearance, mesangial cell and TGF-${\beta}1$ expression in glomeruli and tubular cells were measured on the determined day. Conclusions : 1. Both ASAA and NSAA groups decreased the serum glucose levels in multiple low-dose STZ-induced diabetic rats as compared to the cintrol group, and ASAA group showed more significant decreases than NSAA group. 2. Both ASAA and NSAA groups prevented the development of diabetes in multiple low-dose STZ-induced diabetic rats as compared to the control group, and ASAA group prevented more markedly the development of diabetes than NSAA group. 3. Both ASAA and NSAA groups prevented the reduction of body weight in multiple low-dose STZ-induced diabetic rats as compared to the control group, and ASAA group showed the same as the normal group. 4. Both ASAA and NSAA groups did not show any changes of the creatinine clearance in multiple low-does STZ-induced diabetic rats. 5. Both ASAA and NSAA groups prevented the excretion of urinary glucose and albumin in multiple low-dose STZ-induced diabetic rats as compared to the cintrol group, and ASAA group showed more significant prevention than NSAA group. 6. Both ASAA and NSAA groups prevented the expansion of glomerular cells and the protein expression of transforming growth factor-${\beta}1$ in multiple low-dose STZ-induced diabetic rats as compared to the cintrol group, and ASAA group prevented more significantly than NSAA group.
This study was designed to investigate the hypoglycemic effects of Benincasa hispida (Wax gourd) in streptozotocin (STZ)-induced diabetic rats. Diabetes was induced in the male rats by intravenous injection of STZ at a dose of 45 mg/kg dissolved in citrate buffer. The diabetic animals then had plasma glucose concentration of above 300mg/dl. The experimental groups were divided into five groups; normal, STZ-control and three Wax gourd groups (5%, 10% and 20% intake groups). Normal and STZ-control groups were fed on a AIN-93 diet and experimental groups were fed a AIN-93 diet with the Wax gourd powder (5%, 10% and 20%/kg diet) for 4 weeks. The body weight, diet intake and feed efficiency ratio (FER) were monitored. The blood glucose and cholesterol levels were determined everyweek. After 4 weeks, the rats were sacrificed and the levels of glucose, insulin, cholesterol, HDL-cholesterol, triglyceride and free fatty acids in plasma and levels of glycogen in liver and muscle were analyzed. Diabetic rats showed the lower weight gain compared to the normal rats. The weight gain and feed efficiency ratios in 15 and 20% Wax gourd groups were higher than in STZ-control group. The plasma glucose levels were significantly lower in all Wax gourd groups than in STZ-control group. The plasma insulin levels in diabetic groups were not significantly different compared to the normal group, but the level of 20% Wax gourd group was higher than other diabetic groups. The experimental diabetic groups showed the higher levels of muscle glycogen compared to STZ-control group. The lower levels of plasma cholesterol were noticed in 20% Wax gourd group throughout the experimental period. The plasma level of triglyceride was elevated in STZ-diabetic control and the levels were slightly decreased in Wax gourd groups. Rats of 10% Wax gourd group showed the lower levels of plasma free fatty acids. It is suggested, from the results, that the possibility of therapeutic or preventive use of wax gourd to the diabetes mellitus.
Sharma, Manju;Anwer, Tarique;Pillai, K K;Haque, Syed Ehtaishamul;Najmi, A K;Sultana, Yasmin
Advances in Traditional Medicine
/
v.8
no.2
/
pp.146-153
/
2008
The present study is aimed at finding the influence of silymarin (a flavonoid) (25 mg/kg & 50 mg/kg) in streptozotocin (STZ)-induced diabetic rats. Type 2 diabetes was induced by single intraperitoneal injection of STZ (100 mg/kg) to 3 days old rat pups. Silymarin was administered for 15 days after the animals were confirmed diabetic (75 days after STZ injection). Blood glucose, glycosylated hemoglobin ($HbA_{1c}$), lipid peroxides (LPO) levels and reduced glutathione (GSH) contents in pancreas and liver were estimated following the established procedures. Biochemical observations were further substantiated with histological examination of pancreas. Blood glucose and $HbA_{1c}$ levels, which were elevated by STZ, were lowered to physiological levels by the administration of silymarin. The levels of LPO were significantly increased in STZ-induced diabetic rats. Silymarin reduced the LPO levels in both pancreas and liver. GSH contents which were reduced significantly in pancreas and liver of STZ-induced diabetic rats were brought back to near normal levels by silymarin treatment. Multifocal necrotic and degenerative changes of pancreas in STZ-diabetic rats were minimized to near normal morphology by administration of silymarin as evident by histopathological examination. Silymarin showed a dose dependent protective effect on STZ-induced $\beta$-cell damage. It could be attributed to the antioxidative and free radicals scavenging properties of the flavonoid. Thus, it may be considered as a natural antioxidant with potential therapeutic application in the treatment of type 2 diabetes.
This study was conducted to investigate the effect of soyligosaccharides on improvement of diabetes mellitus. Sprague Dawley rats were divided into three groups. Control and one experimental group were fel AIN-93G diet(mixed diet) and the other experimental group was fed a similar diet containing 5% soyligosaccharides(oligosaccharide diet) for 6 weeks. Experimental groups were divided into two sub-groups after streptozotocin(STZ) injection and fed th mixed diet or the oligosaccharide diet for the next 2 weeks. Followings are final experimental and control groups: MM (mixed dietlongrightarrowSTZ injectionlongrightarrowmixed diet). MO(mixed dietlongrightarrowSTZ injectionlongrightarrowoligosaccharide diet), OM( oligosaccharide dietlongrightarrowSTZ injectionlongrightarrowmixed diet), OO(oligosaccharide dietlongrightarrowSTZ injectionlongrightarrowoligosaccharide diet), C(mixed dietlongrightarrowplacebo injectionlongrightarrowmixed diet). Blood glucose was analyzed at d1, d8 and d12 after streptozotocin injection. At the end of the experimental period, fecal bifidobacteria, plasma insulin, total lipid, triglyceride, cholesterol, and leptin concentrations was analyzed, After STZ injection, blood glucose level was significantly elevated in experimental group compared to a control group. Elevated blood glucose level declined faster in OO group compared to the other experimental groups. Meanwhile, insulin concentration decreased in all experimental groups compared to a control group. The number of bifidobacteria was significantly increased in oligosaccharide diet groups after STZ injection (MO and OO) than a mixed diet group(MM). Plasma cholesterol concentration significantly decreased in oligosaccharide diet groups(MO and OO) compared to mixed diet groups (MM and OM) after SZ injection. Plasma triglyceride and liver cholesterol concentrations significantly decreased in MO group compared to other experimental groups. Meanwhile, plasma leptin concentration was significantly lower in oligosaccharide diet groups after STZ injection(MO and OO) compared to a control group. The results in this study suggest that the dietary soyoligosaccharides has strong on reduction of reduction of blood glucose and lipid concentrations in streptozotoicin-induced diabetic rats. Thus, the use of soyoligosaccharides at a diet for IDDM patients may help to improve diabetes mellitus symptoms.(Korean J Nutrition 34(1) : 3-13, 2001)
This study was carried out to evaluate the effects of fractions of methanol(MeOH) extracts of Lycopus lucidic Turcz on hyperglycemia and energy metabolites in streptozotocin(STZ) diabetic rats. Diabetes mellitus was induced in male Sprague-Dawley rats weighing 200-220 g by an injection of STZ dissolved in a citrate buffer into the tail vein at a dose of 45 mg/kg of body weight, and the rats were divided into 7 groups, that is, one normal group and 6 diabetic groups: STZ-control, hexane, chloroform(CHCl$\sub$3/). ethylacetate(EtOAc), butanol(BuOH) and H$\sub$2/O fraction-fed groups. All groups were fed an AIN-93 diet and the fractions of Lycopus lucidic Turcz were administered orally with 2 % Tween 80 for 14 days after the STZ injection. Body weight, diet intake and organ weights were monitored. The plasma levels of blood glucose, insulin and protein were determined. The plasma concentrations of cholesterol, HDL-cholesterol, triglycerides and free fatty acid were assayed. The plasma activities of aspartate aminotransferase (AST) and alanine aminotransferase(ALT) were also measured. Body weight losses were observed by feeding the fractions of Lycopus lucidic Turcz in STZ experimental groups, and the kidney weight was increased. The extent of blood glucose decrement was significantly greater in the hexane and BuOH fraction-fed groups than STZ-control group. The plasma protein level was significantly lower in the H$\sub$2/O fraction-fed group. The plasma cholesterol level was decreased in BuOH and H$\sub$2/O fraction-fed groups compared with the STZ-control group. The levels of free fatty acids in the CHC1$\sub$3/ and H$\sub$2/O fraction-fed groups were significantly decreased(p<0.05). ALT activitiy of BuOH fraction-fed group was lower than control but it was not significantly different. These results suggest that the fractions of Lycopus lucidic Turcz are capable of lowering blood glucose and fat metabolites concentrations when administered to STZ-treated rats, and AST/ALT activity and insulin levels show the possibility of therapeutic use to diabetes mellitus.
Objective: Diabetes mellitus (DM) is known to cause many systemic complications as well as male infertility. Astaxanthin (ASTX) is a powerful antioxidant that is involved in a variety of biologically active processes, including those with anti-diabetes effects. The present study investigates the effect of ASTX on the spermatozoa function in streptozotocin (STZ)-induced diabetic rats. Methods: We divided 30 adult rats into three groups (10 rats per group), with a control group that received corn oil mixed with chow. DM was induced by intra-peritoneal injection of STZ. Eight weeks after the STZ injection, half of the diabetic animals were used as diabetic controls, and the rest were treated with ASTX for 56 days. Then the parameters and chromatin integrity of the epididymal sperm were analyzed using chromomycin A3, toluidine blue (TB), and acridine orange (AO) staining. Results: The count, viability, and motility of the epididymal sperm were decreased significantly in the STZ group in comparison with the control group (count and viability, p<0.001; motility, p<0.01). ASTX increased normal morphology and viable spermatozoa compared to the STZ group (morphology, p=0.001; viability, p<0.05). The percentage of abnormal chromatins in TB and AO staining was higher in the STZ group compared to the control group (p<0.001). The mean percentage of TB and AO positive spermatozoa in STZ rats was significantly lower in the STZ+ASTX group (TB, p=0.001; AO, p<0.05). Conclusion: This study observed that in vivo ASTX treatment partially attenuates some detrimental effect of diabetes. Conversely, ASTX improved sperm viability, normal morphology, and DNA integrity.
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