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Palou M, Sánchez J, García-Carrizo F, Palou A, Picó C. Pectin supplementation in rats mitigates age-related impairment in insulin and leptin sensitivity independently of reducing food intake. Mol Nutr Food Res 2015. [DOI: 10.1002/mnfr.201500292] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Mariona Palou
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics); University of the Balearic Islands and CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Palma de Mallorca Balearic Islands Spain
| | - Juana Sánchez
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics); University of the Balearic Islands and CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Palma de Mallorca Balearic Islands Spain
| | - Francisco García-Carrizo
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics); University of the Balearic Islands and CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Palma de Mallorca Balearic Islands Spain
| | - Andreu Palou
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics); University of the Balearic Islands and CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Palma de Mallorca Balearic Islands Spain
| | - Catalina Picó
- Laboratory of Molecular Biology; Nutrition and Biotechnology (Nutrigenomics); University of the Balearic Islands and CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Palma de Mallorca Balearic Islands Spain
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Abstract
BACKGROUND The concept of conserved processes presents unique opportunities for using nonhuman animal models in biomedical research. However, the concept must be examined in the context that humans and nonhuman animals are evolved, complex, adaptive systems. Given that nonhuman animals are examples of living systems that are differently complex from humans, what does the existence of a conserved gene or process imply for inter-species extrapolation? METHODS We surveyed the literature including philosophy of science, biological complexity, conserved processes, evolutionary biology, comparative medicine, anti-neoplastic agents, inhalational anesthetics, and drug development journals in order to determine the value of nonhuman animal models when studying conserved processes. RESULTS Evolution through natural selection has employed components and processes both to produce the same outcomes among species but also to generate different functions and traits. Many genes and processes are conserved, but new combinations of these processes or different regulation of the genes involved in these processes have resulted in unique organisms. Further, there is a hierarchy of organization in complex living systems. At some levels, the components are simple systems that can be analyzed by mathematics or the physical sciences, while at other levels the system cannot be fully analyzed by reducing it to a physical system. The study of complex living systems must alternate between focusing on the parts and examining the intact whole organism while taking into account the connections between the two. Systems biology aims for this holism. We examined the actions of inhalational anesthetic agents and anti-neoplastic agents in order to address what the characteristics of complex living systems imply for inter-species extrapolation of traits and responses related to conserved processes. CONCLUSION We conclude that even the presence of conserved processes is insufficient for inter-species extrapolation when the trait or response being studied is located at higher levels of organization, is in a different module, or is influenced by other modules. However, when the examination of the conserved process occurs at the same level of organization or in the same module, and hence is subject to study solely by reductionism, then extrapolation is possible.
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Affiliation(s)
- Ray Greek
- Americans For Medical Advancement (www.AFMA-curedisease.org), 2251 Refugio Rd, Goleta, CA, 93117, USA
| | - Mark J Rice
- Department of Anesthesiology, University of Florida College of Medicine, PO Box 100254, Gainesville, FL, 32610-0254, USA
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Anti-obesity and hypolipidemic effects of chufa (Cyperus esculentus L.) in mice fed a high-fat diet. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0042-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Saeed S, Mosa-Al-Reza H, Fatemeh AN, Saeideh D. Antihyperglycemic and antihyperlipidemic effects of guar gum on streptozotocin-induced diabetes in male rats. Pharmacogn Mag 2012; 8:65-72. [PMID: 22438666 PMCID: PMC3307206 DOI: 10.4103/0973-1296.93328] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 12/08/2010] [Accepted: 02/28/2012] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Herbal medicine is widely used in the treatment of diseases like diabetes mellitus. We investigated the effects of guar gum in diabetic rats for the reduction of the risk of diabetes and cardiovascular disease. Dietary pattern emphasizing foods high in complex carbohydrates and fiber are associated with low blood glucose and cholesterol levels. MATERIALS AND METHODS Diet containing 0%, 5%, 10% and 20% (w/w) guar gum was fed to diabetic rats for 28 days. Blood serum glucose, triglycerides, cholesterol, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol levels, atherogenic index levels, body weights and food intake were monitored at 0, 7.14 and 28 days after induction of diabetes. RESULTS In spite of the fact that diabetes elevated blood lipids in all rats after 14 days, the guar gum diet significantly decreased the serum concentration of cholesterol, triacylglicerols and LDL-C and atherogenic index. The most significant result in this study was the reduction of blood glucose in diabetic rats treated with the guar gum diet after 28 days versus non- and glibenclamide-treated rats. The gum promoted a general improvement in the condition of the diabetic rats in body weight and food intake in comparison with nontreated rats. CONCLUSION The results of this research suggest that guar gum was significantly effective in comparison with glibenclamide in the treatment of hyperlipidemia and hyperglycemia in diabetes rats. Therefore, it may be suggested as a reliable fiber in diabetic regimes in diabetic patients.
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Affiliation(s)
- Samarghandian Saeed
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hadjzadeh Mosa-Al-Reza
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Davoodi Saeideh
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Grover GJ, Koetzner L, Wicks J, Gahler RJ, Lyon MR, Reimer RA, Wood S. Effects of the soluble fiber complex PolyGlycopleX® (PGX®) on glycemic control, insulin secretion, and GLP-1 levels in Zucker diabetic rats. Life Sci 2011; 88:392-9. [DOI: 10.1016/j.lfs.2010.11.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Revised: 09/26/2010] [Accepted: 11/15/2010] [Indexed: 02/07/2023]
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Effect of enzymatic hydrolysis on cholesterol-lowering activity of oat β-glucan. N Biotechnol 2010; 27:85-8. [DOI: 10.1016/j.nbt.2009.11.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 10/28/2009] [Accepted: 11/05/2009] [Indexed: 11/23/2022]
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Lobley GE, Bremner DM, Holtrop G, Johnstone AM, Maloney C. Impact of high-protein diets with either moderate or low carbohydrate on weight loss, body composition, blood pressure and glucose tolerance in rats. Br J Nutr 2007; 97:1099-108. [PMID: 17397561 DOI: 10.1017/s0007114507691934] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
One approach to achieve weight loss and decrease both obesity and associated morbidities involves high-protein, low-carbohydrate (HPLC) diets. This study compares the impact on metabolic health of HPLC and high-protein, medium-carbohydrate (HPMC) diets offered to diet-induced obese (DIO) rats. Weanling male rats were fed either a 37 % fat diet (n48) or stock pellets (n12) for 22 weeks. Rats fed the 37 % fat diet accumulated more body fat (26·6versus14·8 % body weight,P < 0·001) compared with those on stock diet. The DIO rats had higher systolic blood pressure (+6·6 mmHg,P = 0·002), fasting insulin (+63 %P = 0·006) and areas under the glucose (+21 %,P < 0·001) and insulin (+81 %,P < 0·001) curves following an oral glucose tolerance test. DIO rats were then separated into four groups and offered for 8 weeks either: (1) the 37 % fat diet; (2) an HPLC or (3) HPMC diet; or (4) fed the 37 % fat diet to the intake of the HPMC group. Rats offered the 37 % fat or HPLC diets gained while those on HPMC lost body fat. Blood pressure was not altered by the dietary switch. Both HPLC and HPMC rats had lowered fasting insulin (P = 0·027) and improved homeostatic assessment (HOMA;P = 0·011) that was not different from those of stock animals. These improvements occurred despite differences in fat gain, and indicate that both weight loss and macronutrient intake can impact favourably on obesity-associated morbidities.
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Affiliation(s)
- Gerald E Lobley
- Obesity and Metabolic Health Division, Rowett Research Institute, Bucksburn, Aberdeen AB21 9SB, UK.
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Cho IJ, Lee C, Ha TY. Hypolipidemic effect of soluble fiber isolated from seeds of Cassia tora Linn. in rats fed a high-cholesterol diet. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:1592-6. [PMID: 17300158 DOI: 10.1021/jf0622127] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Soluble fibers isolated from the seeds of Cassia tora Linn. (SFC) have attracted considerable attention in recent years due to their phenomenal rheological behavior. In this study were investigated the effects of SFC on lipid metabolism. Male Sprague-Dawley rats were fed one of three experimental diets, a normal diet, a high-cholesterol diet, or a high-cholesterol diet with 5% SFC, for 5 weeks. The serum concentration of total cholesterol in rats fed SFC was 27% lower (p < 0.05) compared to that of the control group, but the serum high-density lipoprotein cholesterol level was increased in the SFC group. Liver total cholesterol and triglyceride levels were reduced significantly (p < 0.05) in rats fed the SFC diet. In addition, fecal bile acid and lipid excretion was significantly increased by SFC consumption. These results indicate that SFC enhances fecal lipid excretion and may cause a reduction in serum and hepatic lipid concentrations in rats.
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Affiliation(s)
- Il Jin Cho
- Division of Food Function Research, Korea Food Research Institute, 46-1 Baekhyun-Dong, Bundang-Gu, Songnam-Si, Kyunggi-Do 463-746, Republic of Korea
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Hirunpanich V, Utaipat A, Morales NP, Bunyapraphatsara N, Sato H, Herunsale A, Suthisisang C. Hypocholesterolemic and antioxidant effects of aqueous extracts from the dried calyx of Hibiscus sabdariffa L. in hypercholesterolemic rats. JOURNAL OF ETHNOPHARMACOLOGY 2006; 103:252-60. [PMID: 16213683 DOI: 10.1016/j.jep.2005.08.033] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2005] [Revised: 07/26/2005] [Accepted: 08/09/2005] [Indexed: 05/04/2023]
Abstract
The present study was designed to investigate the hypolipidemic effects and antioxidant effects of Hibiscus sabdariffa L. (roselle) with regard to protection of LDL oxidation in vivo and ex vivo in rats made hypercholesterolemic by continuous cholesterol feeding. Administering the dried calyx extracts of roselle at doses of 500 and 1,000 mg/kg together with continuous cholesterol feeding to hypercholesterolemic rats for 6 weeks significantly decreased serum cholesterol level by 22% and 26%, respectively (p<0.001); serum triglycerides level by 33% and 28%, respectively (p<0.05); serum LDL level by 22% and 32%, respectively (p<0.05). However, serum HDL level was not affected. LDL was extracted from plasma of the hypercholesterolemic rats and the effects of the dried calyx extracts of roselle on the oxidation of LDL in vivo and ex vivo were examined. Six-week treatment with 250, 500 and 1,000 mg/kg of the extracts significantly decreased thiobarbituric acid reactive substances (TBARs) formation (p<0.05) while the formation of conjugated dienes during the oxidation of LDL induced by CuSO(4) was reduced, but not significantly different. These lines of evidence suggest that the aqueous extracts from the dried calyx of roselle possess both antioxidant effects against LDL oxidation and hypolipidemic effects in vivo. However, its mechanism(s) of action remains to be elucidated.
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Affiliation(s)
- Vilasinee Hirunpanich
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Sriayudhaya Road, Rajadhevi, Bangkok 10400, Thailand
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Dongowski G, Lorenz A. Intestinal steroids in rats are influenced by the structural parameters of pectin. J Nutr Biochem 2004; 15:196-205. [PMID: 15068812 DOI: 10.1016/s0955-2863(03)00080-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2002] [Revised: 05/13/2003] [Accepted: 05/23/2003] [Indexed: 11/20/2022]
Abstract
We investigated the effects of pectin with different degrees of methylation (34.5, 70.8, and 92.6%, respectively) on the composition and concentration of intestinal and fecal bile acids and neutral sterols in conventional and germfree rats. Diets containing 6.5% pectin (galacturonan) were given for 3 weeks. High concentrations of free and secondary bile acids appeared in cecum and colon of conventional rats. With increasing degree of methylation, more bile acids were transported into lower parts of intestinal tract and excreted whereas the proportion of secondary bile acids decreased. In contrast, the composition of bile acids in intestinal contents and feces was relatively unchanged in germfree rats. Exclusively cholesterol was found as a neutral sterol in germfree rats. Coprostanol appeared in cecum of conventional rats and additionally coprostanone in colon. Amounts of neutral sterols increased with increasing degree of methylation of pectin. Additionally, concentrations of bile acids in plasma decreased if the pectin-containing diets were given. Besides the degree of methylation, the molecular weight of pectin used in the diets influenced concentration and composition of intestinal and fecal steroids in rats.
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Affiliation(s)
- Gerhard Dongowski
- Department of Food Chemistry and Preventive Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke, Bergholz-Rehbrücke, Germany.
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Betancur-Ancona D, Peraza-Mercado G, Moguel-Ordoñez Y, Fuertes-Blanco S. Physicochemical characterization of lima bean (Phaseolus lunatus) and Jack bean (Canavalia ensiformis) fibrous residues. Food Chem 2004. [DOI: 10.1016/s0308-8146(03)00213-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mataumoto J, Kishida T, Ebihara K. Sugar beet fiber suppresses ovarian hormone deficiency-induced hypercholesterolemia in rats. Nutr Res 2001. [DOI: 10.1016/s0271-5317(01)00379-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Duarte HS, Costa NMB, Leal PFDG, Oliveira TT. Avaliação do efeito de sopas desidratadas ricas em fibras na redução do colesteroal sangüíneo em ratos. REV NUTR 1998. [DOI: 10.1590/s1415-52731998000200006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Neste estudo foi avaliado o efeito de quatro formulações dietéticas ricas em fibra solúvel na redução de colesterol sangüíneo em ratos. As formulações foram preparadas com farinha de soja desengordurada, farelo de aveia, cebola desidratada, fibra de soja, condimentos e aromas. Duas das formulações continham feijão preto FP(+) e FP(-), nos níveis de 40 e 30%, respectivamente. As outras duas continham feijão vermelho FV(+) e FV(-), nesses mesmos teores. Foram utilizados seis grupos de oito ratos machos, com peso médio inicial de 200g. O grupo Padrão recebeu dieta basal. O grupo Controle recebeu dieta de composição semelhante à Padrão, porém, acrescida de 1% de colesterol cristalino e 0,1% de ácido cólico. As demais dietas foram semelhantes ao grupo Controle, substituídas pelas formulações FV(+), FP(+), FV(-) e FP(-), de modo a fornecerem 7,4% de fibra total da dieta. Ratos alimentados com dieta do grupo Controle apresentaram aumento significativo dos níveis de colesterol sérico, peso dos fígados, colesterol e lipídio total das fezes e dos fígados, em relação ao grupo recebendo dieta Padrão. As dietas FV(+), FP(+), FV(-) e FP(-), não diferiram entre si quanto ao efeito nos níveis de lipídios séricos e glicose, no peso e lipídio total dos fígados e no peso, umidade e nitrogênio das fezes. No entanto, reduziram significativamente os níveis sangüíneos de colesterol total em 29,0%, os níveis de HDL - colesterol em 34,0%, o peso dos fígados em 11,7% e o colesterol do fígado em 9,0% em relação à dieta Controle. As dietas de feijão vermelho proporcionaram maior redução de colesterol no fígado e maior excreção de lipídio e colesterol nas fezes comparadas com as de feijão preto.
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Al-Othman AA, Al-Shagrawi RA, Hewedy FM, Hamdi MM. Plasma total, lipoprotein cholesterol, organs cholesterol and growth performance in rats fed dietary gum arabic. Food Chem 1998. [DOI: 10.1016/s0308-8146(97)00149-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Suprijana O, Terpstra A, Van Lith H, Van Tol A, Lemmens A, Geelhoed-Mieras M, Beynen A. PLASMA LIPIDS AND APOLIPOPROTEINS IN RATS FED DIETS WITH TYPE OF FAT (FISH OIL CORN OIL) AND FIBER (PECTIN VERSUS CELLULOSE) AS VARIABLES. Nutr Res 1997. [DOI: 10.1016/s0271-5317(97)00087-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cholesterol-lowering activity of linear- and gel-type sodium polyacrylate as dietary fiber models. J Nutr Biochem 1997. [DOI: 10.1016/s0955-2863(97)00023-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Reciprocal influence of fermentations and bile acid excretion on cholesterol-lowering effect of fermentable carbohydrate. J Nutr Biochem 1997. [DOI: 10.1016/s0955-2863(97)00016-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Favier ML, Moundras C, Demigné C, Rémésy C. Fermentable carbohydrates exert a more potent cholesterol-lowering effect than cholestyramine. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1258:115-21. [PMID: 7548174 DOI: 10.1016/0005-2760(95)00107-n] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The purpose of this work was to assess the respective role of bile acid excretion and of the end-products of cecal fermentations in the cholesterol-lowering effect of complex carbohydrates. The effects of two different fermentable carbohydrates (guar gum, beta-cyclodextrin), and sequestrant resin (cholestyramine) have been investigated in male Wistar rats. Guar gum and beta-cyclodextrin are broken down in the large bowel, with fermentation rich in propionic acid (37% against 26% for control), whereas cholestyramine did not enhance cecal fermentation. beta-Cyclodextrin and guar gum were less potent than cholestyramine to enhance bile acids and sterol excretion. Nevertheless, fermentable carbohydrates exerted a more potent cholesterol-lowering effect than cholestyramine. beta-Cyclodextrin also depressed triacylglycerol-rich lipoprotein (TGRLP). Fermentable carbohydrates lowered cholesterol of LDL and HDL1 fractions. The induction of hepatic HMG-CoA reductase was practically proportional to rate of fecal steroid excretion. Moreover, with beta-cyclodextrin, hepatic HMG-CoA reductase induction was concomitant to a decrease in fatty acid synthase (FAS) activity. Thus, the cholesterol-lowering effect of fermentable carbohydrates could be related to a depressed lipogenesis, as well as to an accelerated removal of HDL1, in relation to an elevated hepatic demand of cholesterol. In conclusion, fermentable carbohydrates could favour cholesterol elimination and have a general lipid-lowering effect by exerting more complex physiological effects than cholestyramine.
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Affiliation(s)
- M L Favier
- Laboratoire des Maladies Métaboliques, I.N.R.A. de Clermont-Ferrand/Theix, Ceyrat, France
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Hexeberg S, Hexeberg E, Willumsen N, Berge RK. A study on lipid metabolism in heart and liver of cholesterol- and pectin-fed rats. Br J Nutr 1994; 71:181-92. [PMID: 8142330 DOI: 10.1079/bjn19940125] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Pectin is known as a cholesterol-reducing dietary fibre, and in the present study we addressed the question whether pectin affected the quantity of lipid in droplets in the myocardial cells and of lipid in the liver cells. Male Wistar rats received either a diet containing cholesterol or a standard diet without cholesterol with 0, 50 or 100 g pectin/kg incorporated for 10 d. The fractional volume of lipid droplets in the myocardial cells decreased as a function of pectin dose in both the standard-fed and the cholesterol-fed rats. Serum cholesterol was significantly reduced in both groups after addition of 100 g pectin/kg diet. The cholesterol diet increased the liver cholesterol level, and 100 g pectin/kg diet resulted in a lower concentration of liver cholesterol in the cholesterol-fed animals, but the influence on standard-fed rats was modest. Hydroxymethylglutaryl-CoA reductase (EC 1.1.1.88; HMG-CoA reductase) activity increased when pectin was given in the standard diet. Liver triacylglycerol level increased after cholesterol and pectin feeding. Mitochondrial fatty acid oxidation and phosphatidate phosphohydrolase (EC 3.1.3.4) activity tended to decrease, whereas the peroxisomal fatty acid oxidation and acyl-CoA oxidase activity were unchanged. Increased hepatic triacylglycerol content by cholesterol and pectin treatment may be due to inhibited mitochondrial fatty acid oxidation along with increased availability of fatty acid for esterification and triacylglycerol synthesis. The presence of pectin in the diets of cholesterol-fed rats resulted in increased hepatic concentration of triacylglycerols and increased mitochondrial fatty acid oxidation. In this case the hepatic accumulation of triacylglycerol may be mediated by a reduced efflux of triacylglycerols from the liver.
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Affiliation(s)
- S Hexeberg
- Department of Anatomy and Cell Biology, University of Bergen, Norway
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Dietary Fibre and Plasma Lipids: Potential for Prevention and Treatment of Hyperlipidaemias. DIETARY FIBRE — A COMPONENT OF FOOD 1992. [DOI: 10.1007/978-1-4471-1928-9_17] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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