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1.
Food Sci Biotechnol ; 30(11): 1417-1425, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34790425

RESUMEN

BARLEYmax, a barley variety, and cocoa polyphenols (CPPs) have been reported to affect bacterial metabolites in the colon. This study aimed to evaluate the combined effects of BARLEYmax and CPPs supplementation on fecal microbiota in vitro using pig feces for 48 h. The relative abundances of the family Clostridiaceae and the genus Clostridium and ammonia-nitrogen production were decreased by both BARLEYmax and CPP supplementation, and there was a positive correlation between their abundances and the ammonia-nitrogen concentration. Although acetate and n-butyrate production was decreased by CPP supplementation, their concentrations were maintained at a higher level in the BARLEYmax + CPP group than in the cellulose (control) and cellulose + CPP groups. Therefore, this study demonstrated that a combination of BARLEYmax and CPPs may be beneficial in maintaining higher short-chain fatty acid production and the elimination of potentially harmful factors. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s10068-021-00959-z.

2.
J Oleo Sci ; 70(7): 989-993, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34193672

RESUMEN

We previously reported that consuming a ketogenic diet containing medium-chain triacylglycerols (MCTs) might be a valuable dietary strategy for endurance athletes. However, the long-term safety of the diet has not been established, and there is a concern that a higher intake of MCTs increases the liver triacylglycerol content. In this study, we found that consuming an MCT-containing ketogenic diet for 24 weeks decreased, rather than increased, the liver triacylglycerol concentration and did not aggravate safety-related blood biomarkers in male Wistar rats. Our results may therefore suggest that the long-term intake of a ketogenic diet containing MCTs may have no deleterious effects on physiological functions.


Asunto(s)
Dieta Cetogénica , Hígado/metabolismo , Triglicéridos/metabolismo , Animales , Biomarcadores/química , Biomarcadores/metabolismo , Peso Corporal/fisiología , Dieta Cetogénica/efectos adversos , Dieta Cetogénica/métodos , Ácidos Grasos/química , Ácidos Grasos/metabolismo , Masculino , Estructura Molecular , Tamaño de los Órganos/fisiología , Ratas Wistar , Factores de Tiempo , Triglicéridos/química
3.
J Oleo Sci ; 69(12): 1569-1577, 2020 Nov 25.
Artículo en Inglés | MEDLINE | ID: mdl-33177279

RESUMEN

Triglyceride deposit cardiomyovasculopathy (TGCV), a rare cardiovascular disorder caused by genetic or acquired dysfunction of adipose triglyceride lipase (ATGL), is marked by defective intracellular lipolysis that results in excessive accumulation of triglycerides (TGs) in the myocardium and coronary arteries, leading to intractable heart failure (HF). We have developed a specific treatment for TGCV using tricaprin, a medium chain TG, as part of a governmental rare disease project in Japan. We recently reported that tricaprin diet improved cardiac TG metabolism and left ventricular function in an ATGL-knockout (KO) mouse, a mouse model for TGCV. Here, we report the effect of tricaprin on the myocardial proteome of KO mice to elucidate the mechanisms of action of tricaprin at protein expression levels. We compared proteomic changes in the hearts of KO mice fed control or tricaprin diet. Tandem mass tag-based shotgun proteomics identified 1832 proteins common to all sample groups. Whole proteomic distribution in the heart was largely up-regulated in KO mice fed control diet. When using cut-off values (>1.5 or <0.67, FDR-adjusted p value<0.01), in fact, 65 proteins were up-regulated whereas only 2 proteins were down-regulated in the hearts of KO mice fed control diet. The former included proteins assigned to "Cardiac Arrhythmia", and "Cardiac Damage" reflecting HF by a toxicity function analysis. One of the latter was Ces1d, which is known to regulate intracellular TG metabolism. These proteomic changes observed in KO mice were dramatically rescued by the tricaprin diet. These results indicated that tricaprin diet ameliorated HF in a TGCV mouse model at protein expression levels and also provided important clues to understand mechanisms for the beneficial effect of tricaprin.


Asunto(s)
Enfermedades Cardiovasculares/genética , Enfermedades Cardiovasculares/metabolismo , Suplementos Dietéticos , Lipasa/fisiología , Proteoma/metabolismo , Triglicéridos/metabolismo , Animales , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/fisiopatología , Modelos Animales de Enfermedad , Femenino , Lipólisis/efectos de los fármacos , Lipólisis/genética , Masculino , Ratones Noqueados , Miocardio/metabolismo , Triglicéridos/administración & dosificación , Triglicéridos/farmacología , Función Ventricular Izquierda/efectos de los fármacos
4.
J Oleo Sci ; 67(8): 983-989, 2018 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-30012901

RESUMEN

Triglyceride deposit cardiomyovasculopathy (TGCV) is an intractable cardiovascular disease for which a specific treatment is urgently required. In TGCV, adipose triglyceride lipase (ATGL) deficiency results in the abnormal intracellular metabolism of long-chain fatty acid (LCFA) which leads to TG deposition. Medium-chain triglycerides have been used as an important functional food for various human diseases. To address the potential activities of tricaprin, a medium-chain triglyceride, on cardiac dysfunctions of TGCV, we examined the effects of tricaprin diet on Atgl knock out (KO) mice, an animal model for TGCV. Cardiac imaging tests showed that the tricaprin diet reduced TG accumulation, resulting from improvement of LCFA metabolism, and improved left ventricular function in Atgl KO mice compared to that in mice fed the control diet. In conclusion, tricaprin improved myocardial abnormality in the TGCV model, thus, it may be useful for the treatment of patients with TGCV.


Asunto(s)
Enfermedades Cardiovasculares/tratamiento farmacológico , Enfermedades Cardiovasculares/metabolismo , Lipasa/deficiencia , Miocardio/metabolismo , Triglicéridos/metabolismo , Animales , Enfermedades Cardiovasculares/diagnóstico por imagen , Modelos Animales de Enfermedad , Ácidos Grasos/metabolismo , Corazón/diagnóstico por imagen , Humanos , Ratones Noqueados , Triglicéridos/administración & dosificación
5.
J Oleo Sci ; 66(8): 917-924, 2017 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-28701655

RESUMEN

Previous studies have shown that medium-chain triacylglycerols (MCTs) exert favorable effects on protein metabolism. This study evaluated the effects of the dietary intake of MCTs on rat skeletal muscle mass and total protein content during casting-induced hindlimb immobilization, which causes substantial protein degradation and muscle atrophy. Rats were fed a standard diet containing long-chain triacylglycerols (LCTs) or MCTs for 3 days and then a unilateral hindlimb was immobilized while they received the same diet. After immobilization for 3, 7, and 14 days, muscle mass and total protein content in immobilized soleus muscle in the LCT-fed rats had markedly decreased compared to the contralateral muscle; however, these losses were partially suppressed in MCT-fed rats. Autophagosomal membrane proteins (LC-I and -II), which are biomarkers of autophagy-lysosome activity, did not differ significantly between the LCT- and MCT-fed rats. In contrast, the immobilization-induced increase in muscle-specific E3 ubiquitin ligase MuRF-1 protein expression in immobilized soleus muscle relative to contralateral muscle was completely blocked in the MCT-fed rats and was significantly lower than that observed in the LCT-fed rats. Collectively, these results indicate that the dietary intake of MCTs at least partly alleviates immobilization-induced muscle atrophy by inhibiting the ubiquitin-proteasome pathway.


Asunto(s)
Suplementos Dietéticos , Suspensión Trasera/efectos adversos , Atrofia Muscular/etiología , Atrofia Muscular/prevención & control , Triglicéridos/administración & dosificación , Animales , Autofagia , Moldes Quirúrgicos , Suspensión Trasera/métodos , Lisosomas , Masculino , Proteínas Musculares/metabolismo , Músculo Esquelético/metabolismo , Complejo de la Endopetidasa Proteasomal/metabolismo , Proteolisis/efectos de los fármacos , Ratas Wistar , Transducción de Señal/efectos de los fármacos , Factores de Tiempo , Triglicéridos/química , Triglicéridos/farmacología , Proteínas de Motivos Tripartitos/metabolismo , Ubiquitina/metabolismo , Ubiquitina-Proteína Ligasas/metabolismo
6.
J Oleo Sci ; 65(8): 693-9, 2016 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-27430387

RESUMEN

Coconut oil has recently attracted considerable attention as a potential Alzheimer's disease therapy because it contains large amounts of medium-chain fatty acids (MCFAs) and its consumption is thought to stimulate hepatic ketogenesis, supplying an alternative energy source for brains with impaired glucose metabolism. In this study, we first reevaluated the responses of plasma ketone bodies to oral administration of coconut oil to rats. We found that the coconut oil-induced increase in plasma ketone body concentration was negligible and did not significantly differ from that observed after high-oleic sunflower oil administration. In contrast, the administration of coconut oil substantially increased the plasma free fatty acid concentration and lauric acid content, which is the major MCFA in coconut oil. Next, to elucidate whether lauric acid can activate ketogenesis in astrocytes with the capacity to generate ketone bodies from fatty acids, we treated the KT-5 astrocyte cell line with 50 and 100 µM lauric acid for 4 h. The lauric acid treatments increased the total ketone body concentration in the cell culture supernatant to a greater extent than oleic acid, suggesting that lauric acid can directly and potently activate ketogenesis in KT-5 astrocytes. These results suggest that coconut oil intake may improve brain health by directly activating ketogenesis in astrocytes and thereby by providing fuel to neighboring neurons.


Asunto(s)
Astrocitos/efectos de los fármacos , Astrocitos/metabolismo , Cuerpos Cetónicos/biosíntesis , Ácidos Láuricos/farmacología , Animales , Células Cultivadas , Relación Dosis-Respuesta a Droga , Cuerpos Cetónicos/sangre , Ácidos Láuricos/sangre , Masculino , Ratas , Ratas Sprague-Dawley , Relación Estructura-Actividad
7.
J Nutr Sci Vitaminol (Tokyo) ; 62(1): 32-9, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27117849

RESUMEN

Uncoupling protein 3 (UCP3) and pyruvate dehydrogenase kinase 4 (PDK4) in skeletal muscle are key regulators of the glucose and lipid metabolic processes that are involved in insulin resistance. Medium-chain fatty acids (MCFAs) have anti-obesogenic effects in rodents and humans, while long-chain fatty acids (LCFAs) cause increases in body weight and insulin resistance. To clarify the beneficial effects of MCFAs, we examined UCP3 and PDK4 expression in skeletal muscles of mice fed a MCFA- or LCFA-enriched high-fat diet (HFD). Five-week feeding of the LCFA-enriched HFD caused high body weight gain and induced glucose intolerance in mice, compared with those in mice fed the MCFA-enriched HFD. However, the amounts of UCP3 and PDK4 transcripts in the skeletal muscle of mice fed the MCFA- or LCFA-enriched HFD were similar. To further elucidate the specific effects of MCFAs, such as capric acid (C10:0), on lipid metabolism in skeletal muscles, we examined the effects of various FAs on expression of UCP3 and PDK4, in mouse C2C12 myocytes. Although palmitic acid (C16:0) and lauric acid (C12:0) significantly induced expression of both UCP3 and PDK4, capric acid (C10:0) upregulated only UCP3 expression via activation of peroxisome proliferator-activated receptor-δ. Furthermore, palmitic acid (C16:0) disturbed the insulin-induced phosphorylation of Akt, while MCFAs, including lauric (C12:0), capric (C10:0), and caprylic acid (C12:0), did not. These results suggest that capric acid (C10:0) increases the capacity for fatty acid oxidation without inhibiting glycolysis in skeletal muscle.


Asunto(s)
Ácidos Decanoicos/farmacología , Fibras Musculares Esqueléticas/metabolismo , Proteínas Quinasas/genética , Proteína Desacopladora 3/genética , Regulación hacia Arriba , Animales , Línea Celular , Dieta Alta en Grasa , Ácidos Grasos/administración & dosificación , Expresión Génica/efectos de los fármacos , Glucólisis/efectos de los fármacos , Masculino , Ratones , Ratones Endogámicos C57BL , Músculo Esquelético/química , Músculo Esquelético/metabolismo , Oxidación-Reducción , PPAR delta/antagonistas & inhibidores , PPAR delta/metabolismo , ARN Mensajero/análisis
8.
J Oleo Sci ; 64(6): 683-8, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25891112

RESUMEN

We examined the effects of the dietary intake of medium- and long-chain triacylglycerol (MLCT) on hyperglycemia in diabetic ob/ob mice. Six-week-old male ob/ob mice were fed a diet containing longchain triacylglycerol (LCT) or MLCT for 3 wks. During the dietary treatment, we determined the plasma glucose and insulin concentrations in the fed state once a week. Whereas the body weights did not differ between the two groups, the total intra-abdominal fat mass was significantly higher in the MLCT group compared to the LCT group. The plasma glucose levels in the freely fed state gradually increased during the 3-wk dietary treatment in the LCT but not MLCT group, although the daily food intake did not differ between the two groups. In the fed state, the MLCT group's plasma glucose was significantly lower and their insulin concentrations were significantly higher than those observed in the LCT group (p<0.01). Plasma glucose concentrations at the end of dietary treatment (3rd wk) were negatively correlated with plasma insulin concentrations (p<0.05) and tended to be inversely related to total intra-abdominal fat mass (p=0.08). These results suggest that the dietary intake of MLCT may delay the progression of hyperglycemia in ob/ob mice, possibly through the stimulation of glucose uptake in intra-abdominal fat tissue caused by enhanced insulin secretion.


Asunto(s)
Suplementos Dietéticos , Hiperglucemia/prevención & control , Triglicéridos/administración & dosificación , Triglicéridos/química , Grasa Abdominal/metabolismo , Animales , Glucemia , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/metabolismo , Grasas Insaturadas en la Dieta , Modelos Animales de Enfermedad , Progresión de la Enfermedad , Glucosa/metabolismo , Hiperglucemia/sangre , Hiperglucemia/metabolismo , Insulina/sangre , Insulina/metabolismo , Secreción de Insulina , Masculino , Ratones Obesos , Estimulación Química , Triglicéridos/farmacología
9.
J Oleo Sci ; 64(6): 653-62, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25891111

RESUMEN

Nursing care food, made smooth and soft by adding a substantial amount of water, has been provided to elderly people who exhibit a decline in chewing and swallowing function. However, this is associated with problems such as an increase in the volume of meals and a decrease in the nutritional value per unit weight, causing malnutrition. To resolve these issues, we aimed to develop gelatinous fat suitable for processing nursing care food. We compared several types of oil and fat including this gelatinous fat using rheology measurement and sensory evaluation. In the measurement of fat alone using a dynamic viscoelastometer, the gelatinous fat had the highest values of storage elastic modulus (G') and loss elastic modulus (G") at the predetermined ranges of temperature and frequency. In the measurement of fat mixed with food using a creep meter, the gelatinous fat showed a significantly lower level of firmness and a higher level of cohesiveness than other types of fat. In the sensory evaluation, food processed with gelatinous fat was evaluated to be better than food processed with no addition or the addition of another type of fat in terms of softness, smoothness, low feeling of residual food, and palatability. These results suggest that the newly developed gelatinous fat is most suitable for nursing care food processing among the types of fat examined. It is expected that nursing care food processed with gelatinous fat can facilitate the consumption of food with high energy and reduce the risk of malnutrition in the elderly.


Asunto(s)
Grasas de la Dieta , Calidad de los Alimentos , Alimentos Especializados , Atención de Enfermería , Elasticidad , Grasas/química , Geles , Desnutrición Proteico-Calórica/prevención & control , Temperatura de Transición , Viscosidad
10.
J Nutr Sci Vitaminol (Tokyo) ; 59(2): 123-8, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23727642

RESUMEN

Recent studies have shown that medium-chain triacylglycerol (MCT) improved serum albumin concentration in elderly people with protein-energy malnutrition (PEM) and in malnourished rats. However, the mechanism for this effect has not been clarified. Dietary MCT promotes insulin secretion from the pancreas, and insulin activates mammalian target of rapamycin (mTOR) complex 1 (mTORC1) via the activation of phosphoinositide 3-kinase (PI3K) and its downstream effecter, Akt. mTORC1 promotes mRNA translation through S6K and 4E-BP1. Therefore, we hypothesized that dietary MCT elevates albumin synthesis through promotion of insulin-Akt-mTOR transduction in the liver. To test this hypothesis, we measured phosphorylated Akt, mTOR and albumin in the livers of malnourished rats. In the present study we examined rats fed low-protein diets containing either MCT or long-chain triacylglycerol (LCT) with energy restriction. The plasma and liver albumin levels were significantly higher in the MCT-fed group than in the LCT-fed group. In addition, plasma insulin concentration, liver phosphorylated Akt/Akt and phosphorylated mTOR/mTOR levels were significantly higher in the MCT-fed group than in the LCT-fed group. These results suggest that one of the mechanisms for the albumin improvement effect of dietary MCT is the promotion of albumin synthesis through the insulin-Akt-mTOR signaling pathway of the liver.


Asunto(s)
Insulina/sangre , Hígado/efectos de los fármacos , Complejos Multiproteicos/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Albúmina Sérica/biosíntesis , Serina-Treonina Quinasas TOR/metabolismo , Triglicéridos/farmacología , Animales , Peso Corporal/efectos de los fármacos , Proteínas Portadoras/genética , Proteínas Portadoras/metabolismo , Dieta con Restricción de Proteínas , Ingestión de Energía , Péptidos y Proteínas de Señalización Intracelular , Hígado/metabolismo , Masculino , Diana Mecanicista del Complejo 1 de la Rapamicina , Músculo Esquelético/efectos de los fármacos , Tamaño de los Órganos/efectos de los fármacos , Fosfatidilinositol 3-Quinasas/metabolismo , Fosfoproteínas/genética , Fosfoproteínas/metabolismo , Fosforilación , Desnutrición Proteico-Calórica/tratamiento farmacológico , ARN Mensajero/genética , ARN Mensajero/metabolismo , Ratas , Ratas Wistar , Proteínas Quinasas S6 Ribosómicas/genética , Proteínas Quinasas S6 Ribosómicas/metabolismo , Transducción de Señal , Triglicéridos/sangre
11.
Nutrition ; 28(1): 92-7, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-21872431

RESUMEN

OBJECTIVE: Excessive accumulation of visceral fat is strongly associated with insulin resistance. The present investigation examined the effects of dietary intake of medium- and long-chain triacylglycerols (MLCTs), which have been shown to induce significantly lower visceral fat accumulation in rats and humans, on high-fat diet-induced obesity and insulin resistance in rats. These effects were then compared with those observed in long-chain triacylglycerol (LCT)-fed rats. METHODS: After an 8-wk feeding of a high-fat diet, which induced severe whole-body insulin resistance, male Sprague-Dawley rats were fed a standard diet containing LCTs or MLCTs for 6 wk. After the dietary treatment, an oral glucose tolerance test was performed. RESULTS: Although body weight and total intra-abdominal fat mass did not differ between the two groups, mesenteric fat weight in the MLCT-fed group was significantly lower than that in the LCT group (P < 0.05). The increase in plasma insulin concentrations, but not in glucose, after glucose administration (area under the curve) was significantly smaller in the MLCT group than in the LCT group (P < 0.01) and was significantly associated with mesenteric fat weight (P < 0.05). MLCT-fed rats had significantly higher plasma adiponectin concentrations compared with LCT rats (P < 0.05). Adiponectin concentrations were negatively correlated with the area under the curve for plasma insulin (P < 0.05) and tended to be inversely related to mesenteric fat weight (P = 0.08). CONCLUSION: These results suggest that dietary intake of MLCTs may improve insulin resistance in rats fed a high-fat diet, at least in part through increased adiponectin concentrations caused by a lower mesenteric fat mass.


Asunto(s)
Adiponectina/sangre , Dieta Alta en Grasa/efectos adversos , Grasas de la Dieta/uso terapéutico , Resistencia a la Insulina , Triglicéridos/uso terapéutico , Adiposidad , Animales , Peso Corporal , Ácidos Grasos/análisis , Ácidos Grasos/química , Grasa Intraabdominal/patología , Masculino , Sobrepeso/sangre , Sobrepeso/dietoterapia , Sobrepeso/metabolismo , Sobrepeso/patología , Ratas , Ratas Sprague-Dawley , Triglicéridos/química
12.
J Oleo Sci ; 60(12): 597-607, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-22123240

RESUMEN

Disruption of the skin barrier function caused by epidermal hyper-proliferation, results in the skin becoming dry and showing high transepidermal water loss (TEWL). Gamma linolenic acid (GLA) is reportedly efficacious for treating TEWL and epidermal hyper-proliferation. In this study, to elucidate the effect of GLA-rich oil on skin function, GLA-containing food was given to adults with dry skin or mild atopic dermatitis and skin parameters were evaluated. In the results, we recognized beneficial effects on the TEWL index. The efficacy of GLA was also demonstrated to be statistically significant especially in subjects with pro-inflammatory features. The results suggest that the mechanism of improvement of skin barrier has been associated with possible generation of anti-inflammatory metabolites from GLA. The clinical physician also confirmed that none of the subjects showed any noteworthy side effects. GLA-enriched food appears to be safe and to improve skin barrier function in subjects with dry skin conditions and mild atopic dermatitis.


Asunto(s)
Agua Corporal/metabolismo , Dermatitis Atópica/metabolismo , Dermis/metabolismo , Suplementos Dietéticos , Alimentos Fortificados , Ácido gammalinolénico/administración & dosificación , Ácido gammalinolénico/farmacología , Adulto , Dermis/fisiopatología , Método Doble Ciego , Ácidos Grasos/metabolismo , Humanos , Mediadores de Inflamación/metabolismo , Masculino , Persona de Mediana Edad , Pérdida Insensible de Agua/efectos de los fármacos
13.
Nutrition ; 27(2): 239-43, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-20363589

RESUMEN

OBJECTIVE: Patients with Parkinson's disease (PD) lose body weight primarily due to decreased body fat mass. The purpose of this study was to elucidate possible factors related to reduction in the intra-abdominal fat mass of 6-hydroxydopamine (6-OHDA)-treated rats, which are frequently used as an animal model for PD. METHODS: Sham-operated (NPD: n = 4) and unilaterally 6-OHDA-injected (PD: n = 4) 14-wk-old male Sprague-Dawley rats were fed a relatively high-fat diet for 2 wk, during which food intake and body weight were measured. After the 2-wk feeding period, intra-abdominal fat was dissected out and weighed. Carbohydrate and fat absorption-related gene expressions in the jejunum and serum insulin and glucose concentrations were analyzed. RESULTS: Although final body weights did not differ, total intra-abdominal fat weight, expressed relative to body weight, was significantly lower in the PD group than in the NPD group (P < 0.05). There were no significant differences between the two groups in the mRNA expression of carbohydrate and fat digestion/absorption-related genes in the jejunum, or in fat absorption efficacy assessed by fecal fat excretion. However, PD rats showed significantly lower serum insulin and higher glucose concentrations than NPD rats (P < 0.05). CONCLUSION: PD model rats displayed loss of intra-abdominal fat, similar to the progressive loss of fat in PD patients. Our results provide preliminary evidence that reduced lipogenesis due to lower insulin levels, rather than impaired digestion/absorption, might have been involved in this decrease in intra-abdominal fat mass.


Asunto(s)
Insulina/sangre , Grasa Intraabdominal/metabolismo , Oxidopamina/farmacología , Enfermedad de Parkinson/metabolismo , Animales , Peso Corporal , Digestión , Modelos Animales de Enfermedad , Lipogénesis , Masculino , Ratas , Ratas Sprague-Dawley
14.
J Nutr Sci Vitaminol (Tokyo) ; 57(5): 364-71, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-22293214

RESUMEN

Conjugated linoleic acid (CLA) is a collective term used for fatty acids with a conjugated double bond that are geometrical and positional isomers of linoleic acid. Anti-obesity and anti-cancer properties, an immunopotentiation effect, and promotion of bone formation by CLA have been shown in cell culture and animal studies. A mixture of 9c11t- and 10t12c-CLA is now used as a health food supplement after testing in clinical trials. These trials focused on improvement of lipid metabolism by CLA, whereas few studies have examined absorption and metabolism of CLA in humans. In addition, there is no report concerning absorption and metabolism of CLA in Japanese. This study was designed to examine CLA concentration in blood, the elimination rate of CLA, and metabolic differences between 9c11t-CLA and 10t12c-CLA in blood in Japanese who ingested CLA (about 2 g/d, equal weights of 9c11t-CLA and 10t12c-CLA) for 3 wk. Blood samples were collected 1 wk before the 3-wk period, on the first and last days of the period, and 1 wk after the end of the period, and the CLA concentration and distribution in blood were investigated. The CLA concentration in blood was significantly increased by CLA ingestion and reached 36 µmol/L. The CLA concentration in blood one week after the intake period was significantly lower than that at the end of CLA intake. The 10t12c-CLA level in plasma decreased faster than that of 9c11t-CLA. This suggests faster metabolism (fatty acid ß oxidation) of 10t12c-CLA compared with 9c11t-CLA.


Asunto(s)
Grasas de la Dieta/administración & dosificación , Ácidos Linoleicos Conjugados/administración & dosificación , Ácidos Linoleicos Conjugados/sangre , Adulto , Método Doble Ciego , Eritrocitos/metabolismo , Femenino , Humanos , Absorción Intestinal/etnología , Japón , Cinética , Ácidos Linoleicos Conjugados/metabolismo , Lipoproteínas/metabolismo , Masculino , Reproducibilidad de los Resultados , Adulto Joven
15.
Biosci Biotechnol Biochem ; 74(11): 2336-8, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-21071855

RESUMEN

MLCTs, which are randomly interesterified triacylglycerol containing medium- and long-chain fatty acids in the same glycerol molecule, showed significantly higher acyl-CoA dehydrogenase activity when measured by using butyryl-CoA, octanoyl-CoA, and palmitoyl-CoA as substrates than long-chain triacylglycerol one hour after a single administration to rats. These results suggest that not only medium-chain fatty acid oxidation, but also long-chain fatty acid oxidation were increased in the liver of rats administered with MLCT.


Asunto(s)
Ácidos Grasos/metabolismo , Hígado/metabolismo , Triglicéridos/farmacología , Acil-CoA Deshidrogenasa , Animales , Metabolismo de los Lípidos , Oxidación-Reducción , Ratas
16.
Lipids ; 45(6): 501-10, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-20473577

RESUMEN

In contrast to the consumption of long-chain triacylglycerols (LCT), consumption of medium- and long-chain triacylglycerols (MLCT) reduces the body fat and blood triacylglycerols (TAG) level in hypertriacylglycerolemic Chinese individuals. These responses may be affected by BMI because of obesity-induced insulin resistance. We aimed to compare the effects of consuming MLCT or LCT on reducing body fat and blood TAG level in hypertriacylglycerolemic Chinese subjects with different ranges of BMI. Employing a double-blind, randomized and controlled protocol, 101 hypertriacylglycerolemic subjects (including 67 men and 34 women) were randomly allocated to ingest 25-30 g/day MLCT or LCT oil as the only cooking oil for 8 consecutive weeks. Anthropometric measurements of body weight, BMI, body fat, WC, HC, blood biochemical variables, and subcutaneous fat area and visceral fat area in the abdomen were measured at week 0 and 8. As compared to subjects with BMI 24-28 kg/m(2) in the LCT group, corresponding subjects in the MLCT group showed significantly greater decrease in body weight, BMI, body fat, WC, ratio of WC to HC, total fat area and subcutaneous fat area in the abdomen, as well as blood TAG and LDL-C levels at week 8. Based upon our results, consumption of MLCT oil may reduce body weight, body fat, and blood TAG and LDL-C levels in overweight hypertriacylglycerolemic Chinese subjects but may not induce these changes in normal or obese hypertriacylglycerolemic subjects.


Asunto(s)
Tejido Adiposo/metabolismo , Hipertrigliceridemia/dietoterapia , Obesidad/tratamiento farmacológico , Sobrepeso/tratamiento farmacológico , Triglicéridos/metabolismo , Pueblo Asiatico , Índice de Masa Corporal , Grasas Insaturadas en la Dieta/administración & dosificación , Grasas Insaturadas en la Dieta/uso terapéutico , Método Doble Ciego , Femenino , Humanos , Hipertrigliceridemia/sangre , Hipertrigliceridemia/metabolismo , Masculino , Persona de Mediana Edad , Obesidad/sangre , Obesidad/metabolismo , Sobrepeso/sangre , Sobrepeso/metabolismo , Triglicéridos/administración & dosificación , Triglicéridos/sangre
17.
J Nutr Sci Vitaminol (Tokyo) ; 55(5): 394-9, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19926924

RESUMEN

Types of dietary lipid affect the life span of rats. In this study, we investigated the influence of the life-long dietary n-6/n-3 ratio on life span and serum lipid and glucose levels. A semi-purified diet adjusted to a constant saturated : monounsaturated : polyunsaturated fatty acid ratio and an n-6/n-3 ratio of 1 (R1), 4 (R4) or 16 (R16) was fed to rats (n=33) from 4 wk of age until death. There were no significant differences in the food intake or body weight, nor were there survival curve or mean life span variations among the 3 groups. The serum cholesterol levels after feeding the test diet for 6 and 12 mo were significantly lower in the R1 group than in the other groups, and the serum triacylglycerol levels were significantly lower than those in the R16 group. However, no significant differences were noted in the serum cholesterol or triacylglycerol level after feeding for 18 mo among the 3 groups. A significantly higher serum glucose level was noted in the R1 group only at 18 mo of test diet ingestion, compared to that in the R4 group. The results suggest that the influence of the dietary n-6/n-3 ratio on the serum lipid and glucose levels varies, depending on the duration and life stage of feeding. Our findings further suggest that the life span of Wistar rats is not affected even if the ratio of dietary n-6/n-3 changes from 1 to 16.


Asunto(s)
Glucemia/metabolismo , Colesterol/sangre , Grasas de la Dieta/farmacología , Ácidos Grasos Omega-3/farmacología , Ácidos Grasos Omega-6/farmacología , Longevidad/efectos de los fármacos , Triglicéridos/sangre , Envejecimiento , Animales , Dieta , Ratas , Ratas Wistar , Factores de Tiempo
18.
J Nutr Sci Vitaminol (Tokyo) ; 55(5): 423-7, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19926929

RESUMEN

Previous studies have demonstrated that fatty acid oxidation in the liver may affect food intake. This study examined the influence of preloading of medium-chain triacylglycerol (MCT) on food intake in comparison with long-chain triacylglycerol (LCT). Male rats were fasted for 18 h and then administered LCT or MCT emulsion orally. Each group of rats was allowed to rest for 30 min, and then food intake during 1 h was measured. Food intake in the MCT group was significantly lower than that in the LCT group. To examine the influence of hepatic oxidation, the MCT+MA group was injected intraperitoneally with mercaptoacetate (MA), an inhibitor of fatty acid oxidation, 2 h before ingestion of MCT emulsion. Then, 30 min after ingestion of LCT or MCT emulsion, food intake was measured for 1 h. Food intake in the MCT group was significantly lower than that in the LCT group, but there was no significant difference between the MCT+MA group and the LCT group. Food intake in the MCT+MA group was significantly higher than that in the MCT group. The hepatic ATP content after MCT ingestion was significantly higher than that after LCT ingestion, but there was no significant difference between the MCT+MA group and the LCT group. The hepatic ATP content after MCT+MA ingestion was significantly lower than that after MCT ingestion. These results suggest that ingestion of medium-chain fatty acid (MCFA) increases the liver ATP content in fasted rats, consequently decreasing food intake.


Asunto(s)
Adenosina Trifosfato/metabolismo , Grasas de la Dieta/farmacología , Ingestión de Energía/efectos de los fármacos , Hígado/metabolismo , Triglicéridos/farmacología , Animales , Grasas de la Dieta/administración & dosificación , Ácidos Grasos/administración & dosificación , Ácidos Grasos/análisis , Masculino , Ratas , Ratas Wistar , Tioglicolatos/farmacología , Triglicéridos/administración & dosificación , Triglicéridos/química
19.
Asia Pac J Clin Nutr ; 18(3): 351-8, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19786383

RESUMEN

A double blind clinical trial was carried out to clarify the effects of oil with medium- and long-chain triglyceride (MLCT) on body fat and blood lipid profiles in hypertriglyceridemic subjects. One-hundred-and-twelve subjects were enrolled and divided into two groups; those that consumed MLCT oil and those that consumed long-chain triglyceride (LCT) oil for 8 weeks. All subjects were requested to consume 25-30 g of the oils daily and maintain a fixed level of energy intake and exercise. Anthropometric and blood biochemical parameters were measured when the study was initiated and completed. The LCT group consisted of 50 subjects (34 men and 16 women), while the MLCT group consisted of 51 subjects (33 men and 18 women) who completed the study. Larger decreases in body weight, body mass index, waist circumference, body fat, total fat area and subcutaneous fat area in the abdomen and serum triglycerides, low-density lipoprotein cholesterol, apolipoprotein B, C2, C3 and E were observed in male subjects in the MLCT group than those in the LCT group. However, no significant differences in these parameters between the female subjects in the two groups were observed. Data from this study indicate that consumption of medium-and long-chain triglycerides can reduce body weight and body fat and improve blood lipid profiles in male hypertriglyceridemic subjects.


Asunto(s)
Tejido Adiposo , Grasas Insaturadas en la Dieta/uso terapéutico , Hipertrigliceridemia/dietoterapia , Lípidos/sangre , Lipoproteínas/sangre , Caracteres Sexuales , Adolescente , Adulto , Anciano , Índice de Masa Corporal , Registros de Dieta , Grasas Insaturadas en la Dieta/análisis , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Triglicéridos/sangre , Triglicéridos/química , Adulto Joven
20.
Biosci Biotechnol Biochem ; 73(8): 1711-7, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-19661695

RESUMEN

Two groups of Chinese hypertriacylglycerolemic subjects were recruited and randomized to medium- and long-chain triacylglycerols (MLCT) oil or long-chain triacylglycerols (LCT) oil. Two subgroups were divided by age at less or more 60 years in both groups. Both oils were consumed at 25-30 g daily for 8 weeks. Anthropometry, blood biochemicals, and computed tomography (CT) scanning were done at the initial and final times. In subjects of age less than 60 years on MLCT, the body weight, body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-hip ratio (WHR), body fat, total fat area, and subcutaneous fat area were significantly lower than those of the initial values, and the change values in these indicators and visceral fat area lowered significantly as compared with those on LCT. The levels of apoB, apoA2, apoC2, and apoC3 decreased significantly, and the change in values in the levels of triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), apoA1, apoB, apoA2, apoC2, apoC3 were significantly lower on MLCT of age under 60 years as compared with those on LCT.


Asunto(s)
Grasas de la Dieta/farmacología , Ácidos Grasos/química , Hipertrigliceridemia , Triglicéridos/química , Triglicéridos/farmacología , Tejido Adiposo/efectos de los fármacos , Adulto , Distribución por Edad , Anciano , Apolipoproteínas/sangre , Pueblo Asiatico , Glucemia/metabolismo , Colesterol/sangre , Ingestión de Energía , Femenino , Humanos , Hipertrigliceridemia/sangre , Hipertrigliceridemia/enzimología , Hipertrigliceridemia/fisiopatología , Masculino , Actividad Motora , Triglicéridos/sangre
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