盐酸西布曲明对营养性肥胖大鼠的减肥作用

目的 :研究盐酸西布曲明对营养性肥胖大鼠的减肥作用。方法 :给刚断乳的SD大鼠饲喂营养性饲料 ,7wk后养成营养性肥胖模型 ,分组给药 ,连续 6wk。结果 :盐酸西布曲明 9.0、3.0、1.0mg·kg-1灌胃给药 ,能明显降低肥胖大鼠体重、Lee's指数和脂肪重量 ,降低血清甘油三酯水平 ,抑制脂肪细胞增大 ,但对肥胖大鼠空肠绒毛的密度和肠绒毛直径无明显影响。结论 :盐酸西布曲明灌胃给药对营养性肥胖大鼠有显著的减肥降脂作用。     

Anti-obesity effects of hot water extract and high hydrostatic pressure extract of garlic in rats fed a high-fat diet

The effects of hot water extract of garlic (WEG) and high hydrostatic pressure extract of garlic (HEG) on obesity were investigated in rats fed a high-fat (HF) diet. Supplementation with HEG significantly reduced body weight gain and adipose tissue mass compared to those in the HF group, whereas WEG did not. Serum levels of triglycerides, total cholesterol, and LDL-cholesterol were also decreased in the HEG supplemented group compared to those in the HF group. The level of fecal triglyceride in the HEG group was higher compared to that in the HF group. The mRNA levels of adipogenic genes, such as peroxisome proliferator-activated receptor gamma (PPARγ), sterol regulatory element-binding protein-1c (SREBP-1c), and fatty acid-binding protein (aP2) were significantly decreased in both the WEG and HEG groups. Additionally, uncoupling protein 2 (UCP2) mRNA were increased clearly in the HEG group compared to that in the HF group. These results suggested that HEG more efficiently reduced body weight gain than WEG, at least partially mediated by increase of the fecal triglyceride and downregulation of adipogenic genes expression together with upregulation of UCP2 gene expression in rats fed a high-fat diet.     

Possible effects of Phillyrea latifolia on weight loss in rats fed a high-energy diet

Context Phillyrea latifolia L. (Oleaceae), commonly found in the Mediterranean region in Turkey, is used as medicinal teas for weight loss and hyperglycaemia in folk medicine.

Objective The study investigated the possible effects of P. latifolia leaves aqueous extract’s on weight loss and biochemical–histological changes in the rats fed a high-energy diet (HED), also isolated and determined the main phenolic compounds.

Materials and methods Twenty-four male Wistar albino rats were divided into four equal groups such as the HED group fed a HED, the PLE group given only the extract of P. latifolia leaves (220?mg/kg), the HED?+?PLE group administrated with the extract of leaves (220?mg/kg) after being fed with HED and a control group fed with standard pellet diet.

Results PLE administration caused a remarkable decrement of body weight in the HED?+?PLE group (p?<?0.05). PLE showed an improved effect on structural integrity and decreased leukocyte infiltration in liver and small intestinal tissues. The blood glucose (117.3?mmol/L), leptin (5.6?ng/mL), total cholesterol (61.8?mg/dL) and LDL (9.3?mmol/L) levels were significantly increased in the HED group. PLE administration in the HED group decreased these levels. The levels of HDL (26.8?mmol/L) in the HED?+?PLE group were higher than both control and HED groups. Chemical composition was investigated and luteolin 7-O-glucoside and chlorogenic acid were determined for the first time in Turkish sample from the EtOAc extract of leaves.

Discussion and conclusion Phillyrea latifolia leaves may have beneficial effects on obesity related cellular problems and may become a good source of antidiabetic medication.     

Anti-obesity effect of PM-F2-OB, an anti-obesity herbal formulation, on rats fed a high-fat diet

PM-F2-OB is one of the most well-known traditional herbal medicines that are frequently used for the treatment of obesity in Korea. The anti-obesity effect of PM-F2-OB on rats fed a high-fat diet was investigated through analyses of changes in body weight, kidney fat weight, and blood biochemicals including cholesterol, free fatty acid, BUN, creatinine, HDL, LDL, phospholipids, SGOT, SGPT, total lipids, and triglycerides. The subjects in this study were divided into four groups: a normal group with a standard diet (N); a PM-F2-OB treatment group fed a standard diet (N+PM-F2-OB); a control group fed a high-fat diet (C); and a PM-F2-OB treatment group fed a high-fat diet (C+PM-F2-OB). There were no significant differences in body weight change between the N and N+PM-F2-OB treatments. Also, there was no significant difference in the amount of food intake between the C and C+PM-F2-OB treatments. These results suggest that PM-F2-OB has no significant toxicity and does not induce a dislike for that diet due to its smell or taste. Rats were administered a high-fat diet (20% (w/w)) for six weeks to induce obesity. The study shows that PM-F2-OB significantly prevented increases in body weight, cholesterol, LDL and total lipids that resulted from the high-fat diet. PM-F2-OB also decreased kidney fat weight and free fatty acid, phospholipid, and triglyceride concentrations induced by the high-fat diet to level equals or below the normal diet group. It was concluded from the results that PM-F2-OB has a distinct anti-obesity effect.     

A gastrointestinal lipase inhibitor reduces progression of atherosclerosis in mice fed a western-type diet

To investigate whether gastrointestinal lipase inhibition reduces the progression of a western-type diet induced atherosclerosis, male apolipoprotein-E knockout (apoE KO) mice were administered orlistat ((S)-1-[[(S, 2S, 3S)-3-hexyl-4-oxo-2-oxetanyl] methyl]dodecyl-(S)-2-formamido-4-methylvalerate) mixed with a western-type diet for 8 weeks. Orlistat significantly reduced plasma triglyceride levels, but not total cholesterol levels, at 4 and 8 weeks of treatment. Increase in plasma triglyceride levels after oral olive oil loading in the mice fed a western-type diet was significantly suppressed in the orlistat treated group at 4 weeks of treatment. After 8 weeks treatment, atherosclerotic lesion area in the aorta of the orlistat treated group was significantly smaller than that of the control group. These results suggest that gastrointestinal lipase inhibition reduces the progression of atherosclerosis through a triglyceride-lowering effect, via inhibition of fat absorption.     

茶多酚对奥氮平诱导肥胖大鼠的减肥作用及其机制

目的探讨茶多酚对奥氮平诱导肥胖大鼠的减肥作用及其机制。方法 SD雌性大鼠50只,随机分为正常对照组(10只)和奥氮平诱导肥胖模型组(40只)。肥胖模型组于黑暗时相前1h奥氮平1.2 mg·kg~(-1)·d~(-1)灌胃,正常对照组给予等容量蒸馏水,连续2 wk。于wk 3开始,再将肥胖模型大鼠随机分为4组:模型组、西布曲明(2.5 mg·kg~(-1)·d~(-1))组、茶多酚低(150 mg·kg~(-1)·d~(-1))剂量组和茶多酚高(300 mg·kg~(-1)·d~(-1))剂量组,每组10只。连续给药5 wk。观察大鼠体重、肾和子宫周围脂肪湿重,计算Lee's指数和脂肪系数,测定血清瘦素、脂联素水平以及超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量。结果与正常对照组相比,模型组大鼠体重和脂肪湿重及Lee's指数和脂肪系数均增加,血清瘦素水平升高,脂联素水平降低(P<0.05)。与模型组比较,茶多酚低、高剂量组大鼠体重和脂肪湿重降低,Lee's指数、脂肪系数降低,SOD活性增加,MDA含量减少(P<0.05)。与模型组比较,茶多酚高剂量组血清脂联素水平升高(P<0.05),瘦素水平无显著差异(P>0.05)。结论茶多酚对奥氮平诱导的肥胖大鼠有减肥作用,其作用机制可能与增强脂联素的调节和提高抗氧化能力有关。     

Hypolipidemic and body fat-lowering effects of Fatclean in rats fed a high-fat diet

The body fat-lowering and hypolipidemic effects of a Fatclean formula were examined in Sprague–Dawley rats fed a high-fat diet. Animals were given a normal control (NC) diet or a 15% high-fat (HF) diet with or without Fatclean (5%, wt/wt) supplement for 6 weeks. Fatclean formula contained phenolic compounds (14.3 mg/g) and other functional compounds. Fatclean formula significantly lowered final body weights and visceral fat-pads weights, plasma total cholesterol (TC) and triglyceride (TG) concentrations, hepatic cholesterol and triglyceride levels, and hepatic hydroxyl-3-methylglutaryl-coenzyme A reductase (HMG-CoA) and acyl-coenzyme A:cholesterol acyltransferase (ACAT) activities compared to the HF group. Furthermore, adipocytic lipoprotein lipase (LPL) activity was also significantly elevated in the Fatclean group than in the HF group. The high-density lipoprotein–cholesterol/total-cholesterol (HDL–C/Total-C) ratio and atherogenic index (AI) were significantly improved in the Fatclean group than in the HF group. The accumulation of hepatic lipid droplets and the epididymal white adipocyte size were diminished in the Fatclean group than in the HF group. Accordingly, Fatclean seemed to be beneficial for the reduction of body weight and/or body fat and its hyperlipidemic property was highly active for enhancing the plasma lipids profile.     

Pulmonary sensitivity to ozone exposure in sedentary versus chronically trained,female rats

Epidemiological data suggest that a sedentary lifestyle may contribute to increased susceptibility for some environmental toxicants. We developed an animal model of active versus sedentary life style by providing female Sprague-Dawley rats with continuous access to running wheels. Sedentary rats were housed in standard cages without wheels. After training for 12 wks, rats were exposed to 0, 0.25, 0.5 or 1.0?ppm ozone [O₃ for 5?h/d, 1 d/wk, for 6 wk (N?=?10 per group)]. Body composition (%fat, lean and fluid) was monitored noninvasively over the course of the study. Ventilatory parameters [tidal volume, minute ventilation, frequency and enhanced pause (Penh)] were assessed using whole-body plethysmography prior to O₃ and 24?h after the 5th O₃ exposure. Trained rats lost ～2% body fat after 12 wk of access to running wheels. Peak wheel activity was reduced by 40% after exposure to 1.0?ppm O₃. After the 5th O₃ exposure, body weight and %fat were reduced in sedentary but not trained rats. Penh was significantly elevated in sedentary but not trained rats the day after exposure to 1.0?ppm O₃. However, lung lavage cell counts and biomarkers of pulmonary inflammation measured 1?day after the final exposure were inconsistently affected by training. Wheel running led to marked physiological responses along with some indication of improved pulmonary recovery from O₃ exposure. However, wheel running with O₃ exposure may also be a detriment for some pulmonary endpoints. Overall, a sedentary lifestyle may increase susceptibility to O₃, but additional studies are needed.     

The antioxidant,cytotoxic, and antigenotoxic effects of galangin,puerarin, and ursolic acid in mammalian cells

Phenolic compounds not only contribute to the sensory qualities of fruits and vegetables but also exhibit several health protective properties. Galangin, puerarin, and ursolic acid are commonly used plant phenolics in folk medicine. In this study, the antioxidant capacities of galangin, puerarin, and ursolic acid by the trolox equivalent antioxidant capacity (TEAC) assay and the cytotoxic effects by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in V79 cells were investigated. The genotoxic potentials of galangin, puerarin, and ursolic acid were evaluated by micronucleus (MN) and alkaline COMET assays in human lymphocytes and in V79 cells. Galangin, puerarin, and ursolic acid (10, 100, 500, 1000, 2000, 5000, 10 000, and 20 000?μM) were found to have antioxidant activities at the studied concentrations. IC₅₀ values of galangin, puerarin, and ursolic acid in V79 cells were found to be 275.48?μM, 2503.712?μM, and 224.85?μM, respectively. Galangin, puerarin, and ursolic acid, at the all concentrations, have not exerted genotoxic effects and galangin, puerarin, and ursolic acid revealed a reduction in the frequency of MN and DNA damage induced by H₂O₂.     

白藜芦醇改善高脂喂养大鼠胰岛素抵抗的机制

目的:观察白藜芦醇(Res)对高脂喂养大鼠胰岛素抵抗的影响并初步探讨其机制。方法:将30只♂Wistar大鼠随机分为对照组(NC组)及高脂组(HF组),分别给予基础饲料和高脂饲料喂养;喂养6周后,对HF组大鼠进行胰岛素敏感性造模,再将造模成功的大鼠随机分为模型组(IR组)和Res干预组(RT组),继续给予高脂饲料喂养,RT组同时给予100 mg.kg-1.d-1Res灌胃,共持续10周。第16周末,处死各组大鼠,测量各组大鼠的体质量及肾周和附睾脂肪,脂肪组织石蜡切片HE染色观察脂肪细胞大小,并应用ELISA检测血清脂联素(APN)的水平。结果:第16周后I,R组大鼠与NC组相比,表现出内脏型肥胖,肾周脂肪细胞的面积明显增加,胰岛素敏感性及血清APN水平均显著下降;Res的干预可减轻RT组大鼠内脏型肥胖,降低肾周脂肪细胞的面积,改善胰岛素抵抗,并且明显上调血清APN水平;与NC组比较,RT组大鼠脂肪细胞面积仍然显著大于NC组;胰岛素敏感性及血清APN水平仍然显著低于NC组。结论:Res的干预可以改善高脂喂养大鼠的胰岛素抵抗;其机制可能与其在改善高脂喂养大鼠的内脏型肥胖的同时升高血清APN水平有关。     

Beneficial effects of NTP-2000 diet on growth, survival, and kidney and heart diseases of Fischer 344 rats in chronic studies.

Diet is one of the most important environmental factors influencing growth, survival, and appearance of age-associated diseases in rodents. NIH-07 open formula rodent diet was the selected diet for the National Toxicology Program studies from 1980 to 1994. After a number of experimental diets were evaluated, a new one designated as NTP-2000 was selected for rodents in NTP studies beginning in 1994. This report summarizes the results of dosed feed and inhalation studies for differences in growth, survival, and severity of kidney and heart lesions in Fischer 344 rats fed NTP-2000 or NIH-07 diets. In the dosed feed studies, male rats group housed and fed the NTP-2000 diet grew slightly slower, attained maximum body weight later, and lost less body weight by the end of the 2-year studies compared to the groups fed NIH-07. Female rats group housed and fed the NTP-2000 diet in dosed feed studies had significantly slower growth, with lower maximum body weight compared to the groups fed the NIH-07 diet. In the inhalation studies, male rats individually housed and fed the NTP-2000 diet had slightly higher maximum body weight and significantly higher final body weight, with lower loss of weight when compared to similarly housed groups fed the NIH-07 diet. In inhalation studies, female rats fed the NTP-2000 diet and individually housed had significantly slower growth. The NTP-2000 diet significantly increased the survival of male and female rats, with a dramatic increase in survival of males in inhalation studies. This diet also caused significant decreases in severity of nephropathy and cardiomyopathy, and the decrease was marked in males. These observations indicate that diets balanced for nutrients, such as the NTP-2000, could markedly improve the health and increase survival of the rats used in chronic studies.     

Evaluation of the toxicology,anti-lipase,and antioxidant effects of Callistemon citrinus in rats fed with a high fat-fructose diet

ContextCallistemon citrinus Skeels (Myrtaceae) exhibits many biological activities.ObjectiveThis study analyzes for the first time, the toxicity, obesogenic, and antioxidant effects of C. citrinus in rats fed with a high fat-fructose diet (HFFD).Materials and methodsFour studies using male Wistar rats were conducted: (a) 7 groups (n = 3): control (corn oil) and ethanol extract of C. citrinus leaf (single oral dose at 100–4000 mg/kg) for acute toxicity; (b) 2 groups (n = 8): control (corn oil) and C. citrinus (1000 mg/kg/day) for 28 days for subacute toxicity; (c) 3 groups (n = 4) with single oral dose of lipid emulsion: control (lipid emulsion), C. citrinus and orlistat (250 and 50 mg/kg, respectively) for lipid absorption; (d) 4 groups (n = 6): control (normal diet) and 3 groups fed with HFFD: HFFD only, C. citrinus and simvastatin (oral dose 250 and 3 mg/kg, respectively) for 13 weeks. Antioxidant enzymes and biomarkers were evaluated and inhibition of pancreatic lipase was determined in vitro.ResultsToxicological studies of C. citrinus showed no differences in biochemical parameters and lethal dose (LD₅₀) was higher than 4000 mg/kg. C. citrinus inhibited pancreatic lipase activity, with IC₅₀ of 392.00 µg/mL, and decreased lipid absorption by 70%. Additionally, it reduced the body weight 22%, restored the activities of antioxidant enzymes, and reduced the biomarkers of oxidative stress.ConclusionsCallistemon citrinus showed an effect against oxidative stress by reducing biomarkers and induced antioxidant system, without toxic effects.     

Anti-obesity effects of seaweeds of Jeju Island on the differentiation of 3T3-L1 preadipocytes and obese mice fed a high-fat diet

The seaweeds were collected from the coast of Jeju Island, South Korea. We investigated ethanol extracts from seaweed as potential antiobesity agents by testing their effect on adipogenic differentiation in 3T3-L1 cells. Among the red algae extracts tested, the Plocamium telfairiae extract (PTE) showed the highest inhibitory effect on lipogenesis in adipocytes and, thus, was selected as a potential antiobesity agent. PTE treatment significantly decreased the expression of the adipogenic-specific proteins peroxisome proliferator-activated receptor-γ, CCAAT/enhancer-binding protein-α, sterol regulatory element-binding protein 1, and fatty acid-binding protein 4 compared with that in the untreated 3T3-L1 cells. PTE also inhibited high-fat diet (HFD)-induced obesity in male C57BL/6 mice. Oral administration of PTE significantly reduced the body weight, fatty liver, amount of white adipose tissue, and levels of triglyceride and glucose in the tested animals. Taken together, these data demonstrate that PTE can be developed as a therapeutic agent for obesity.     

孕期咖啡因暴露致子代大鼠高脂饮食下胰腺形态和糖代谢功能改变

目的：研究孕期咖啡因暴露（PCE）子代高脂饮食（HFD）下胰腺形态和糖代谢功能变化。方法：孕鼠妊娠第11天给予咖啡因120 mg·kg^-1·d^-1至自然生产。出生后4周给予HFD至成年。于出生后第20周行口服糖耐量（OGTT）实验。24周处死后，观察胰腺形态，检测肝胰岛素受体（IR）、胰岛素受体底物2（IRS2）和葡萄糖转运体2（Glut2）的mRNA表达。结果：与对照组相比，PCE组子代出生1周体质量降低但体质量增长率均升高（P<0.05，P<0.01），第4~24周雄性体质量降低而雌性升高（P<0.05，P<0.01）。第20周PCE组雌性子代基础血糖水平升高而胰岛素水平降低，定量胰岛素敏感性检测指数（QUICKI）升高（P<0.01）。同时，绝对糖耐量减低而相对糖耐量增强。与对照组相比，第24周PCE组胰岛形态被破坏，出现大量脂肪空泡变性。雌性子代肝IR、IRS2和Glut2的mRNA表达升高（P<0.05，P<0.01）。结论：PCE成年子代HFD下呈现"高血糖、低血胰岛素"为主的糖尿病样反应且以雌性较为明显，其机制可能与胰岛形态和功能损伤所致的胰岛素分泌不足有关。     

The effects of diet, ad Libitum feeding, and moderate and severe dietary restriction on body weight, survival, clinical pathology parameters, and cause of death in control Sprague-Dawley rats.

A 2-year study was conducted in Sprague-Dawley rats to compare the effects of ad libitum (AL) feeding and dietary restriction (DR) on body weight, survival, cause of death, and clinical pathology parameters. Three groups of 120 rats/sex each received the following daily rations of a maintenance rodent diet: ad libitum (AL group); 75% of adult AL food consumption (25% DR group); and 45% of adult AL food consumption (55% DR group). Among the 3 groups, there were generally no differences in relative (food intake per gram of body weight) food consumption. Compared to the AL group, decreased body weight gain occurred in DR groups and was associated with an increase in survival proportional to the DR rate. The main cause of death was pituitary adenomas in all groups. Decreases in total leukocyte, segmented neutrophil, lymphocyte, and platelet counts occurred in the 55% DR group. In serum biochemistry, there were decreases in total protein, albumin, total and HDL cholesterol, and total calcium, and increases in alkaline phosphatase activities and chloride in 55% DR females, as well as decreases in triglycerides in the 55% DR group and in 25% DR females. Results of urinalyses showed decreases in urine volume and protein, and increases in urinary pH in both DR groups. In conclusion, a DR rate of approximately 25% appears to be appropriate for Sprague-Dawley rats in toxicity and carcinogenicity assays to improve survival without impairing growth and routine clinical pathology parameters.     

Nutritional and pathological changes in male and female rats fed modifications of the AIN-76A diet

Male and female weanling Sprague-Dawley rats were fed either an AIN-76A diet or a modification of the AIN-76A diet containing no added DL-methionine but with higher levels of vitamins, fluoride and magnesium than in the AIN-76A diet. Both diets were fed, to groups of ten rats of each sex, at 18% protein or a reduced protein level of 13% for 12 wk. Within each sex, all diets produced comparable weight gains in rats at the end of 12 wk, except that the reduced-protein modified AIN-76A diet was associated with a reduction in weight gain in male rats. Both diet and protein level had statistically significant effects on the relative weights of some organs, particularly the kidney. The AIN-76A and the reduced-protein AIN-76A diets significantly increased the relative kidney weights (% body weights) of female rats, when compared with the effects of both modified AIN-76A diets (18 and 13% protein). Male rats fed both of the diets containing 18% protein had higher relative kidney weights than did those consuming both 13% protein diets. Females fed the modified diet containing 13% protein had significantly lower liver weights than the other groups. In both sexes, the two diets containing 18% protein caused significantly higher plasma urea nitrogen concentrations than did the lower protein diets. Kidney calcium concentrations varied with the diet, with dietary protein level, and with the sex of the animal. All diets caused small mineral (calcific) concretions of minimal to mild severity in the lumina of scattered renal tubules in the cortex and/or medulla of male rats. All female rats fed the AIN-76A and the reduced-protein AIN-76A diet had large, moderate or severe mineral concretions in the tubules at the corticomedullary junction and this was associated with increased renal calcium levels. The higher concentration of renal calcium at the lower dietary protein level (13%) was associated with severe corticomedullary junction mineralization. The higher protein diets were associated with an increased incidence of hyaline droplets in the cytoplasm of kidney cortical tubules in male rats.     

Effects of maternal high-fat diet and sedentary lifestyle on susceptibility of adult offspring to ozone exposure in rats

Epidemiological and experimental data suggest that obesity exacerbates the health effects of air pollutants such as ozone (O₃). Maternal inactivity and calorically rich diets lead to offspring that show signs of obesity. Exacerbated O₃ susceptibility of offspring could thus be manifested by maternal obesity. Thirty-day-old female Long-Evans rats were fed a control (CD) or high-fat (HF) (60% calories) diet for 6 wks and then bred. GD1 rats were then housed with a running wheel (RW) or without a wheel (SED) until parturition, creating four groups of offspring: CD-SED, CD-RW, HF-SED and HF-RW. HF diet was terminated at PND 35 and all offspring were placed on CD. Body weight and %fat of dams were greatest in order; HF-SED?>?HF-RW?>?CD-SED?>?CD-RW. Adult offspring were exposed to O₃ for two consecutive days (0.8?ppm, 4?h/day). Glucose tolerance tests (GTT), ventilatory parameters (plethysmography), and bronchoalveolar fluid (BALF) cell counts and protein biomarkers were performed to assess response to O₃. Exercise and diet altered body weight and %fat of young offspring. GTT, ventilation and BALF cell counts were exacerbated by O₃ with responses markedly exacerbated in males. HF diet and O₃ led to significant exacerbation of several BALF parameters: total cell count, neutrophils and lymphocytes were increased in male HF-SED versus CD-SED. Males were hyperglycemic after O₃ exposure and exhibited exacerbated GTT responses. Ventilatory dysfunction was also exacerbated in males. Maternal exercise had minimal effects on O₃ response. The results of this exploratory study suggest a link between maternal obesity and susceptibility to O₃ in their adult offspring in a sex-specific manner.     

Hypocholesterolaemic effects of an ethanol precipitate of Kabosu juice in stroke-prone spontaneously hypertensive rats fed a cholesterol-free diet

1. We have previously identified strong inhibitory effects of Kabosu (Citrus sphaerocarpa Hort.) juice precipitate (KJP) on cholesterol elevation in stroke-prone spontaneously hypertensive rats (SHRSP) fed a cholesterol diet. In the present study, to elucidate the hypocholesterolaemic mechanism, we examined the effect of dietary KJP on lipid metabolism by using SHRSP fed a cholesterol-free diet. 2. Compositions of the experimental diet containing 10% KJP powder were adjusted to those of the control diet. Seven-week-old male SHRSP were fed control or experimental diet for 2 weeks with free access to the diet and water. 3. Serum levels of cholesterol, phospholipid and triglyceride of the KJP group were significantly reduced, which was due to decreases in the very low-density lipoprotein (VLDL), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) fractions. 4. Serum concentrations of apolipoproteins A-I and E (apoA-I and E) of the KJP group were significantly lower than those of the control group, whereas no significant differences were observed in serum apoB and apoA-IV between the two groups. 5. In liver, there were no significant differences in the contents of lipids or relative liver weight between the two groups. The activity of microsomal cholesterol 7alpha-hydroxylase of the KJP group tended to increase, whereas that of microsomal acyl-coenzyme A : cholesterol acyltransferase was significantly reduced, compared with the control group. 6. These results indicate that dietary KJP produces reductions of serum lipid levels, which are due to reductions in VLDL, apoE HDL and apoA-I HDL, and may promote catabolism and excretion of hepatic cholesterol in SHRSP fed a cholesterol-free diet.