scholarly journals Hypoglycaemic and anorexigenic activities of an α-amylase inhibitor from white kidney beans (Phaseolus vulgaris) in Wistar rats

2004 ◽  
Vol 92 (5) ◽  
pp. 785-790 ◽  
Author(s):  
M. A. Tormo ◽  
I. Gil-Exojo ◽  
A. Romero de Tejada ◽  
J. E. Campillo
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Phaseolus Vulgaris ◽  
Wistar Rats ◽  
Body Weight Gain ◽  
Insulin Response ◽  
Standard Diet ◽  
Glucose Levels ◽  
Amylase Inhibitor ◽  
Kidney Beans

An inhibitor of α-amylase was isolated and purified from an extract of white kidney beans (Phaseolus vulgaris). The acute oral administration of the inhibitor (50 mg/kg body weight) to adult Wistar rats together with a starch load (2 g/kg body weight suspended in NaCl (9 g/l)) reduced the increase in glycaemia over the basal value (NaCl, 222 (SEM 49); inhibitor, 145 (SEM 16) mmol/l×180 min; P<0.05) without modifying the insulin response. On administering the inhibitor orally (50 mg/kg body weight dissolved in NaCl (9 g/l)) for 21 d to rats fed on a standard diet, a decline was observed in the glycaemia values on day 0 (NaCl, 5.53 (SEM 0.12); inhibitor, 5.25 (SEM 0.16) mmol/l) relative to those obtained on days 10 (NaCl, 5.00 (SEM 0.14); inhibitor, 4.60 (SEM 0.08) mmol/l; P<0.05) and 21 (NaCl, 5.22 (SEM 0.22); inhibitor, 4.50 (SEM 0.12) mmol/l; P<0.01) of treatment, without modifying the plasma concentration of insulin. There was found to be a significant anorexigenic action of the inhibitor; there was reduced food intake (NaCl, 23.07 (SEM 0.31); inhibitor, 19.50 (SEM 0.49) g/d; P<0.01), a reduced weight gain (NaCl, 52 (SEM 3); inhibitor, −1.33 (SEM 8.9) g/21 d; P<0.01), as well as changes in the activity of some intestinal enzymes such as maltase (NaCl, 87 (SEM 7); inhibitor, 127 (SEM 11) U/g proteins; P<0.05). The present study has shown, for the first time, that the prolonged administration of an α-amylase inhibitor reduces blood glucose levels and body-weight gain in Wistar rats.

scholarly journals Dexamethasone Administration in Mice Leads to Less Body Weight Gain over Time, Lower Serum Glucose, and Higher Insulin Levels Independently of NRF2

Antioxidants ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 4
Author(s):  
Fotini Filippopoulou ◽  
George I. Habeos ◽  
Vagelis Rinotas ◽  
Antonia Sophocleous ◽  
Gerasimos P. Sykiotis ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Molecular Mechanisms ◽  
Inflammatory Diseases ◽  
Body Weight Gain ◽  
Serum Glucose ◽  
Dexamethasone Treatment ◽  
Insulin Levels ◽  
Glucose Levels ◽  
High Insulin

Glucocorticoids are used widely on a long-term basis in autoimmune and inflammatory diseases. Their adverse effects include the development of hyperglycemia and osteoporosis, whose molecular mechanisms have been only partially studied in preclinical models. Both these glucocorticoid-induced pathologies have been shown to be mediated at least in part by oxidative stress. The transcription factor nuclear erythroid factor 2-like 2 (NRF2) is a central regulator of antioxidant and cytoprotective responses. Thus, we hypothesized that NRF2 may play a role in glucocorticoid-induced metabolic disease and osteoporosis. To this end, WT and Nrf2 knockout (Nrf2KO) mice of both genders were treated with 2 mg/kg dexamethasone or vehicle 3 times per week for 13 weeks. Dexamethasone treatment led to less weight gain during the treatment period without affecting food consumption, as well as to lower glucose levels and high insulin levels compared to vehicle-treated mice. Dexamethasone also reduced cortical bone volume and density. All these effects of dexamethasone were similar between male and female mice, as well as between WT and Nrf2KO mice. Hepatic NRF2 signaling and gluconeogenic gene expression were not affected by dexamethasone. A 2-day dexamethasone treatment was also sufficient to increase insulin levels without affecting body weight and glucose levels. Hence, dexamethasone induces hyperinsulinemia, which potentially leads to decreased glucose levels, as well as osteoporosis, both independently of NRF2.

Behavioral and endocrine traits of obesity-prone and obesity-resistant rats on macronutrient diets

1998 ◽  
Vol 274 (6) ◽  
pp. E1057-E1066 ◽  
Author(s):  
Jian Wang ◽  
Jesline T. Alexander ◽  
Ping Zheng ◽  
Hi Joon Yu ◽  
Jordan Dourmashkin ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Body Fat ◽  
High Fat Diet ◽  
Body Weight Gain ◽  
Normal Weight ◽  
Fat Intake ◽  
Sprague Dawley ◽  
Glucose Levels ◽  
Sprague Dawley Rats

Patterns of eating behavior, body weight gain, and hormone changes were examined in normal-weight albino Sprague-Dawley rats on macronutrient diets. These diets consisted of either three separate jars with pure macronutrients, fat, carbohydrate and protein, from which to choose, or a single diet with different concentrations of fat and carbohydrate. Similar patterns on the choice-diet and single-diet paradigms were observed. During the first 7–10 days on these diets but not subsequently, the rats consuming a fat-rich diet exhibit significant hyperphagia, an increase in both total and fat intake that produces higher body weight gain. Compared with a 10% fat diet, a 30% fat diet is associated with a decline in insulin and corticosterone (CORT) levels, whereas a 60% fat diet produces an increase in circulating glucose. Levels of glucose are positively correlated with fat intake, and together these measures are consistently related to body fat. These relationships are most strongly expressed in rats that consume a fat-rich diet with >30% fat. Whereas insulin levels are also positively related to body fat, CORT is inversely related in these normal-weight subjects. In animals consuming a high-fat diet, a clear separation can be seen between “obesity-prone” (OP) rats with 100% greater body fat than “obesity-resistant” (OR) rats. The OP rats, which consume 15% more total calories, have significantly higher insulin and glucose levels. In animals that consume a diet with >30% fat, it is the OP but not the OR rats that exhibit a positive relation between fat intake, glucose levels, and body fat and reveal an additional association between carbohydrate intake, insulin, and body fat. Thus these rats on macronutrient diets exhibit distinct traits that relate behavior to hormone disturbances and adiposity and distinguish subjects that are prone vs. resistant to obesity.

scholarly journals Whey protein isolate and glycomacropeptide decrease weight gain and alter body composition in male Wistar rats

2008 ◽  
Vol 100 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Peter J. Royle ◽  
Graeme H. McIntosh ◽  
Peter M. Clifton
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
Weight Gain ◽  
Whey Protein ◽  
Wistar Rats ◽  
Body Weight Gain ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Whey Protein Concentrate ◽  
Protein Concentrate

The effect of feed protein type on body composition and growth has been examined. Evidence exists that whey protein concentrate is effective at limiting body fat expansion. The presence of caseinomacropeptide, a mixture of glycosylated and non-glycosylated carbohydrate residues, in particular glycomacropeptide (GMP) in whey protein concentrate may be important for this effect. The influence of whey protein isolate (WPI) and GMP on weight gain and body composition was examined by feeding Wistar rats ad libitum for 7 weeks with five semi-purified American Institute of Nutrition-based diets differing in protein type: (1) casein; (2) barbequed beef; (3) control WPI (no GMP); (4) WPI+GMP at 100 g/kg; (5) WPI+GMP at 200 g/kg. Body composition was assessed, and plasma samples were assayed for TAG, insulin and glucose. Body-weight gain was lower ( − 21 %) on the control WPI diet relative to casein, with a non-significant influence associated with GMP inclusion ( − 30 %), the effect being equivalent at both levels of GMP addition. Renal and carcass fat mass were reduced in the highest GMP diet when compared with WPI (P < 0·05). Plasma insulin was lowered by GMP at the highest addition compared with WPI alone ( − 53 %; P < 0·01). Plasma TAG in the WPI+GMP (200 g/kg) group were lower ( − 27 %; P < 0·05) than the casein and beef groups. In conclusion, GMP appears to have a significant additional influence when combined with WPI on fat accumulation. WPI alone appears to have the predominant influence accounting for 70 % of the overall effect on body-weight gain. Mechanisms for this effect have not been identified but food intake was not responsible.

Effect of serum estradiol and leptin levels on thyroid function, food intake and body weight gain in female Wistar rats

Steroids ◽  
2010 ◽  
Vol 75 (10) ◽  
pp. 638-642 ◽  
Author(s):  
Thiago U. Pantaleão ◽  
Felippe Mousovich ◽  
Doris Rosenthal ◽  
Álvaro S. Padrón ◽  
Denise P. Carvalho ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Food Intake ◽  
Thyroid Function ◽  
Wistar Rats ◽  
Body Weight Gain ◽  
Serum Estradiol ◽  
Female Wistar Rats

scholarly journals 3-O-β-D-Glucosyl-(1→6)-β-D-glucosyl-kaempferol Isolated from Sauropus androgenus Reduces Body Weight Gain in Wistar Rats

2006 ◽  
Vol 29 (12) ◽  
pp. 2510-2513 ◽  
Author(s):  
Shih-Fing Yu ◽  
Chia-Tung Shun ◽  
Tzer-Ming Chen ◽  
Yen-Hui Chen
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Wistar Rats ◽  
Body Weight Gain

scholarly journals Early type 2 diabetes and obesity does not affect eicosanoids level and renal morphology in a rat model/ Diabetes tipo 2 no estágio inicial e obesidade não afetam o nível de eicosanóides e a morfologia renal em um modelo de rato

2021 ◽  
Vol 7 (8) ◽  
pp. 85230-85249
Author(s):  
Sandra Aparecida Benite Ribeiro ◽  
Kamila Lauany Lucas Lima ◽  
Júlia Matzenbacher dos Santos ◽  
Didier Quevedo Cagnini ◽  
Igo Gomes Guimarães ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Blood Glucose ◽  
Visceral Fat ◽  
Feed Efficiency ◽  
Body Weight Gain ◽  
Caloric Intake ◽  
Renal Tissue ◽  
Standard Diet ◽  
High Fat

This study evaluated the effects of the early development of Diabetes Mellitus 2 (T2D) and diet-induced Obesity in the eicosanoid pathways and its effects on renal tissue. Thirty male Wistar rats were fed with a high-fat or standard diet and were divided into 3 groups: The Control group received a standard diet, the T2D group received a high-fat diet and a single dose of streptozotocin (25mg/Kg) and the Obesity group received high-fat diet. Caloric intake, feed efficiency, body weight gain, visceral fat, blood glucose, plasma levels of 14,15 EET/DHET, 20-HETE, and kidneys’ morphology were analyzed. Total caloric intake and feed efficiency were higher in the animals of the Obesity group than in Control.  Body weight gain, visceral fat, and blood glucose were higher in Obesity and T2D induced groups than in Control. Body weight gain, visceral fat, and feed efficiency associated positively with blood glucose. However, there was no difference in 14,15 EET/DHET, 20-HETE levels, or kidney injury between groups. In conclusion, we were unable to assess whether changes in eicosanoids are due to obesity or diabetes induction. So, this study suggests that longer periods of homeostatic disturbance caused by these protocols seem to be necessary to induce complications related to the disruption of the eicosanoid’s pathway and its effects on renal tissue. 

scholarly journals Mitigating dietary aflatoxins in Wistar rat using selected phyto-antioxidant sources

2021 ◽  
Vol 48 (2) ◽  
pp. 38-52
Author(s):  
E. O. Ewuola ◽  
P. C. Emerue
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Wistar Rats ◽  
Body Weight Gain ◽  
Garlic Extract ◽  
Feed Conversion ◽  
Ginger Extract ◽  
Poids Corporel ◽  
Serum Biochemical ◽  
Carrot Extract

This study was conducted to investigate the mitigation of dietary aflatoxin in Wistar rats using extract from selected phyto-antioxidant sources. A total of one hundred and twenty Wistar rats weighing between 180-190g (80 females and 40 males) at six weeks old were allotted to eight treatments with 15 rats per treatment (10 females and 5 males), in a completely randomized design. The treatments were Treatment 1 (Normal diet + no extract and no aflatoxin), Treatment 2 (Aflatoxin contaminated diet + no extract), Treatment 3 (Aflatoxin contaminated diet + 100mg/kg BW Carrot extract), Treatment 4 (Aflatoxin contaminated diet + 200mg/kg BW Carrot extract), Treatment 5 (Aflatoxin contaminated diet + 100mg/kg BW Ginger extract), Treatment 6 (Aflatoxin contaminated diet + 200mg/kg BW Ginger extract), Treatment 7 (Aflatoxin contaminated diet +100mg/kg BW Garlic extract), Treatment 8 (Aflatoxin contaminated diet+ 200mg/kg BW Garlic extract). Body weight gain and feed conversion ratio of Wister rats (T8) administered 200 mg/kg BW was significant (p<0.05), with higher weight gain in male (206.00g) and female (199.70g). However, eviscerated and organs weights of both male and female Wistar rats was similar (p>0.05) across the treatments. Haematological and serum biochemical indices among the treatments was not significant (p>0.05), except for the globulin in male Wistar rats that differed significantly (p<0.05) with the value (5.00g/dL) being higher in T7. In conclusion, 200mg/kg body weight of garlic extract improved growth rate of Wistar rats, without any deleterious effect on haematological and serum biochemical parameters. Therefore, 200mg/kg body weight garlic extract mitigated the adverse effect of aflatoxin contaminated feed in Wistar rats.     Cette étude a été menée pour étudier l'atténuation de l'aflatoxine diététique chez les rats de 'Wistar' tout en employant l'extrait des sources phyto-antioxydantes choisies. Un total de cent vingt rats Wistar pesant entre 180 et 190 g (80 femelles et 40 mâles) à l'âge de six semaines ont été attribués à huit traitements avec 15 rats par traitement (10 femelles et 5 mâles), dans une conception complètement randomisée. Les traitements étaient le traitement 1 (régime normal + aucun extrait et aucune aflatoxine), traitement 2 (régime contaminé par l'aflatoxine + aucun extrait), traitement 3 (régime contaminé par l'aflatoxine + extrait de carotte BW de 100mg/kg), traitement 4 (régime contaminé par l'aflatoxine + extrait de carotte BW de 200mg/kg), traitement 5 (Aflatox alimentation contaminée par l'aflatoxine + extrait de gingembre BW 100mg/kg), Traitement 6 (régime contaminé à l'aflatoxine + extrait de gingembre BW 200mg/kg), Traitement 7 (régime contaminé par l'aflatoxine +100mg/kg extrait d'ail BW), Traitement 8 (régime contaminé à l'aflatoxine+ 200mg/kg extrait d'ail BW). Le gain de poids corporel et le rapport de conversion des aliments pour animaux des rats wisters (T8) administrés 200 mg/kg BW étaient significatifs (p<0.05), avec un gain de poids plus élevé chez les rats Wistar mâles (206.00 g) et femelles (199.70 g). Cependant, les poids éviscérés et organes des rats Wistar mâles et femelles étaient similaires (p>0.05) à travers les traitements. Les indices biochimiques hématologiques et sériques parmi les traitements n'étaient pas significatifs (p>0.05), à l'exception de la globuline chez les rats wistar mâles qui différait considérablement (p<0.05) avec la valeur (5.00 g/dL) étant plus élevée dans T7. En conclusion, le poids corporel de 200mg/kg de l'extrait d'ail a amélioré le taux de croissance des rats de Wistar, sans n'importe quel effet délétère sur les paramètres biochimiques hématologiques et sériques. Par conséquent, l'extrait d'ail de poids corporel de 200mg/kg a atténué l'effet défavorable de l'alimentation contaminée d'aflatoxin chez les rats de Wistar.

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