scholarly journals Dietary Whole Egg Reduces Body Weight Gain in a Dose-Dependent Manner in Zucker Diabetic Fatty Rats

2019 ◽  
Vol 149 (10) ◽  
pp. 1766-1775 ◽  
Author(s):  
Cassondra J Saande ◽  
Joseph L Webb ◽  
Paige E Curry ◽  
Matthew J Rowling ◽  
Kevin L Schalinske

ABSTRACT Background We previously reported that a whole-egg–based diet attenuated weight gain in rats with type 2 diabetes (T2D) and more effectively maintained vitamin D status than an equivalent amount of supplemental cholecalciferol. Objectives The objective of this study was to determine the lowest dose of whole egg effective at maintaining vitamin D homeostasis and attenuating the obese phenotype in T2D rats. Methods Zucker diabetic fatty (ZDF) rats (n = 40; age 6 wk; prediabetic) and their lean controls (n = 40; age 6 wk) were randomly assigned to a diet containing 20% casein (CAS) or 20%, 10%, 5%, or 2.5% protein from whole egg (20% EGG, 10% EGG, 5% EGG, and 2.5% EGG, respectively). All diets contained 20% total protein (wt:wt). All rats received their respective diets for 8 wk, at a stage of growth and development that translates to adolescence in humans, until 14 wk of age, a point at which ZDF rats exhibit overt T2D. Weight gain was measured 5 d/wk, and circulating 25-hydroxyvitamin D [25(OH)D] was measured by ELISA. Mean values were compared by 2-factor ANOVA. Results The 20% EGG diet maintained serum 25(OH)D at 30 nmol/L in ZDF rats, whereas the 10%, 5%, and 2.5% EGG diets did not prevent insufficiency, resulting in mean serum 25(OH)D concentrations of 24 nmol/L in ZDF rats. Body weight gain was reduced by 29% (P < 0.001) and 31% (P < 0.001) in ZDF rats consuming 20% and 10% EGG diets, respectively, and by 16% (P = 0.004) and 12% (P = 0.030) in ZDF rats consuming 5% and 2.5% EGG diets, respectively, compared with CAS. Conclusions Whole-egg–based diets exerted a dose-dependent response with respect to attenuating weight gain. These data could support dietary recommendations aimed at body weight management in individuals predisposed to obesity and T2D.

1989 ◽  
Vol 8 (2) ◽  
pp. 377-404 ◽  
Author(s):  
Joseph F. Borzelleca ◽  
Elizabeth C. Clarke ◽  
L. W. Condie

Male and female Sprague-Dawley-derived rats received CdCl2 by gavage at doses of 25, 51, 107, and 225 mg CdCl2 per kg body weight per day for 1 or 10 consecutive days or in drinking solutions at concentrations of 13–323 mg CdCl2 per liter for 10 consecutive days. There were appropriate controls. In the 1 day study in males only, an apparent treatment-related but not statistically significant decrease in body weight was reported; spleen weights and ratios were significantly lower and lung weights and ratios were significantly higher (in the highest dose only). Dose-dependent mortality was observed in the 10 day gavage study. Body weight gain was depressed in a dose-dependent manner in both males and females. Weights and/or ratios of brain, liver, spleen, lungs, thymus, kidneys, and testes of treated males were depressed in a dose-dependent manner. In females, weights and/or ratios of liver, spleen, thymus, and kidneys were depressed in a dose-dependent manner. Focal necrotic changes in renal tubular epithelium and tubular degeneration were reported in males and females. Testicular and hepatic histopathologic changes (testicular atrophy and necrosis and hepatic necrosis) were also reported in males. In the drinking water study, males demonstrated dose-dependent decreases in body weight gain and weight and/or ratios of liver, spleen, thymus, and kidneys. There were no significant compound-related effects in females, although liver weights and ratios were lower. There were no compound-related histopathologic effects.


2021 ◽  
Vol 12 ◽  
Author(s):  
Joice Cristina Kuchler ◽  
Bruna Schumaker Siqueira ◽  
Vanessa Marieli Ceglarek ◽  
Fernanda Vigilato Chasko ◽  
Isllany Carvalho Moura ◽  
...  

The vagus nerve (VN) and spleen represent a complex interface between neural and immunological functions, affecting both energy metabolism and white adipose tissue (WAT) content. Here, we evaluated whether vagal and splenic axis participates in WAT mass regulation in obese and non-obese male Wistar rats. High doses of monosodium glutamate (M; 4 g/Kg) were administered during the neonatal period to induce hypothalamic lesion and obesity (M-Obese rats). Non-obese or Control (CTL) rats received equimolar saline. At 60 days of life, M-Obese and CTL rats were randomly distributed into experimental subgroups according to the following surgical procedures: sham, subdiaphragmatic vagotomy (SV), splenectomy (SPL), and SV + SPL (n = 11 rats/group). At 150 days of life and after 12 h of fasting, rats were euthanized, blood was collected, and the plasma levels of glucose, triglycerides, cholesterol, insulin, and interleukin 10 (IL10) were analyzed. The visceral and subcutaneous WAT depots were excised, weighed, and histologically evaluated for number and size of adipocytes as well as IL10 protein expression. M-Obese rats showed higher adiposity, hyperinsulinemia, hypertriglyceridemia, and insulin resistance when compared with CTL groups (p < 0.05). In CTL and M-Obese rats, SV reduced body weight gain and triglycerides levels, diminishing adipocyte size without changes in IL10 expression in WAT (p< 0.05). The SV procedure resulted in high IL10 plasma levels in CTL rats, but not in the M-Obese group. The splenectomy prevented the SV anti-adiposity effects, as well as blocked the elevation of IL10 levels in plasma of CTL rats. In contrast, neither SV nor SPL surgeries modified the plasma levels of IL10 and IL10 protein expression in WAT from M-Obese rats. In conclusion, vagotomy promotes body weight and adiposity reduction, elevating IL10 plasma levels in non-obese animals, in a spleen-dependent manner. Under hypothalamic obesity conditions, VN ablation also reduces body weight gain and adiposity, improving insulin sensitivity without changes in IL10 protein expression in WAT or IL10 plasma levels, in a spleen-independent manner. Our findings indicate that the vagal-spleen axis influence the WAT mass in a health state, while this mechanism seems to be disturbed in hypothalamic obese animals.


1999 ◽  
pp. 180-189 ◽  
Author(s):  
BS Hansen ◽  
K Raun ◽  
KK Nielsen ◽  
PB Johansen ◽  
TK Hansen ◽  
...  

NN703 is a novel orally active GH secretagogue (GHS) derived from ipamorelin. NN703 stimulates GH release from rat pituitary cells in a dose-dependent manner with a potency and efficacy similar to that of GHRP-6. The effect is inhibited by known GHS antagonists, but not by a GH-releasing hormone antagonist. Binding of (35)S-MK677 to the human type 1A GHS receptor (GHS-R 1A) stably expressed on BHK cells was inhibited by GHRP-6 and MK677 as expected. NN703 was also able to inhibit the binding of (35)S-MK677. However, the observed K(i) value was lower than expected, as based on the observed potencies regarding GH release from rat pituitary cells. Similarly, the effect of NN703 on the GHS-R 1A-induced inositol phosphate turnover in these cells showed a lower potency, when compared with GHRP-6 and MK677, than that observed in rat pituitary cells. The effect of i.v. administration of NN703 on GH and cortisol release was studied in swine. The potency and efficacy of NN703 on GH release were determined to be 155+/-23 nmol/kg and 91+/-7 ng GH/ml plasma respectively. A 50% increase of cortisol, compared with basal levels, was observed for all the tested doses of NN703, but no dose-dependency was shown. The effect of NN703 on GH release after i. v. and oral dosing in beagle dogs was studied. NN703 dose-dependently increased the GH release after oral administration. At the highest dose (20 micromol/kg), a 35-fold increase in peak GH concentration was observed (49.5+/-17.8 ng/ml, mean+/-s.e.m.). After a single i.v. dose of 1 micromol/kg the peak GH plasma concentration was elevated to 38.5+/-19.6 ng/ml (mean+/-s.e.m.) approximately 30 min after dosing and returned to basal level after 360 min. The oral bioavailability was 30%. The plasma half-life of NN703 was 4.1+/-0.4 h. A long-term biological effect of NN703 was demonstrated in a rat study, where the body weight gain was measured during a 14-day once daily oral challenge with 100 micromol/kg. The body weight gain was significantly increased after 14 days as compared with a vehicle-treated group. In summary, we here describe an orally active and GH specific secretagogue, NN703. This compound acts through a similar mechanism as GHRP-6, but has a different receptor pharmacology. NN703 induced GH release in both swine and dogs after i.v. and/or p.o. administration, had a high degree of GH specificity in swine and significantly increased the body weight gain in rats.


2012 ◽  
Vol 36 (1) ◽  
pp. 75-84
Author(s):  
Areej B. Abass

The present study was aimed to evaluate neurotoxic effects of oseltamivir phosphate in lactating pups of orally dosed mice mothers during lactation. Twelve recently parturited female albino mice were divided equally into three groups, one control and two treated groups, each group consists of 4 dosed dams and 8 chosen pups .The nursing dams of T1 and T2 dosed daily orally with 1mg/kg and 5mg/kg,oseltamivir phosphate respectively representing the therapeutic dose and 5 fold dose of drug while control group dosed with distilled water. Lactating mice pups of all groups examined for the following parameters: First parameter was body weight changes and gain: In which T1group showed significant increase in mice pups body weight gain after 14 day of treatment in comparison with control group and T2. Second parameter was clinical symptoms observation /daily, all treatment groups that showed neurotoxic symptoms appeared from 1st dose and extended along the next few days of treatment to be gradually disappeared and completely lost within the last days of treatment in dose dependent manner.These neurotoxic symptoms were weakness, convulsions ,lay on back or side, extended body, incoordination ,extended limbs and limbs stiffness. Third parameter was gross and histopathological studies which demonstrate that the brain was the most affected organ beside extensive lesions in liver, kidney, stomach and small intestine of treated groups in dose dependent manner.In conclusion of this study revealed that Oseltamivir phosphate produce neurotoxic effect in mice pups through indirect administration by nursing mothers dosing during lactation period and the level of toxicity was in dose dependent manner.


2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Sae-Rom Yoo ◽  
Soo-Jin Jeong ◽  
Mee-young Lee ◽  
Hyeun-Kyoo Shin ◽  
Chang-Seob Seo ◽  
...  

We had tested antiobesity effect of 52 traditional herbal formulas in 3T3-L1 adipocyte, and Banhasasim-tang (BHSST) was chosen as one of the effective medications to inhibit triglyceride accumulation. We investigated the antiobesity effect of BHSST on 3T3-L1 adipocytes and high-fat diet- (HFD-) induced obese mice. In addition, we evaluated the acute toxicity of BHSST in Sprague Dawley (SD) rats. Differentiated 3T3-L1 cells were treated with various concentrations of BHSST for 8 days. Accumulated triglyceride level and the expressions of adipogenesis-related genes and proteins were subsequently investigated. To evaluate the single oral toxicity of BHSST, the SD rats of each sex were administered a single dose (5000 mg/kg) of BHSST via oral gavage; the control group received vehicle only. After a single administration, the mortality, clinical signs, gross findings, and body weight were monitored for 15 days. Male C57BL/6J mice were fed HFD for 4 weeks to induce obesity and randomly received 50 mg/kg of Orlistat (n=12, OR), 200 mg/kg of BHSST (n=12, B200), and 1000 mg/kg of BHSST (n=12, B1000) for another 8 weeks. BHSST suppressed the triglyceride contents and lipid accumulation in a dose-dependent manner in 3T3-L1 adipocytes. BHSST also downregulated the adipogenesis-related gene levels and protein expression compared with those in undifferentiated adipocytes. In a single oral dose toxicity study, there was no adverse effect on mortality, clinical signs, body weight changes, and gross findings in the treatment group. HFD-fed mice treated with BHSST showed significantly reduced body weight gain, food efficiency ratio, and white adipose tissue weight. The medial lethal dose (LD50) of BHSST was 5000 mg/kg/day body weight for each sex in the rats. BHSST decreased the body weight gain in HFD-fed obese mice and inhibited triglyceride accumulation via a cascade of multiple factors at the mRNA and protein levels in 3T3-L1 adipocytes.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Joe Webb ◽  
Cassondra Saande ◽  
Kevin Schalinske ◽  
Matthew Rowling

Abstract Objectives The objective of this study was to determine the lowest dose of whole egg-based diets to effectively attenuate the obese phenotype in type 2 diabetic (T2D) rats using a dose-response experimental design. Methods Male Zucker diabetic fatty (ZDF) rats (n = 8) and their lean controls (n = 8) were obtained at 6 weeks of age. Following one week of acclimation, animals were randomly assigned to one of 5 treatment groups: a casein-based diet (20% protein, w/w) or a whole-egg based diet provided at either 20, 10, 5, or 2.5% egg protein (w/w). Animals were fed their respective diets for 8 weeks with weight gain and food intake measured daily. At 14 weeks of age, body composition was analyzed by dual X-ray absorptiometry and statistical differences were measured between groups using a 2-way ANOVA at P < 0.05. Results Whole egg-based diets exerted a dose-dependent decrease in cumulative body weight gain and final body weight; increased in food intake; decreased total body fat; and increased lean body mass. Interestingly, the 20% whole egg protein diet decreased body fat and increased lean body mass in the ZDF rats and their lean controls. Conclusions Together, these data support the hypothesis that dietary consumption of whole eggs may decrease weight gain, reduce body fat, and increase lean body mass in a dose-dependent manner in ZDF rats. These results suggest the need to modify dietary recommendations during T2D and obesity to potentially consume more whole egg. Funding Sources This work was supported by the Egg Nutrition Center and in part by a National Science Foundation Graduate Research Fellowship. Supporting Tables, Images and/or Graphs


Endocrinology ◽  
2009 ◽  
Vol 150 (2) ◽  
pp. 642-650 ◽  
Author(s):  
Ignasi Canals ◽  
María C. Carmona ◽  
Marta Amigó ◽  
Albert Barbera ◽  
Analía Bortolozzi ◽  
...  

Sodium tungstate is a novel agent in the treatment of obesity. In diet-induced obese rats, it is able to reduce body weight gain by increasing energy expenditure. This study evaluated the role of leptin, a key regulator of energy homeostasis, in the tungstate antiobesity effect. Leptin receptor-deficient Zucker fa/fa rats and leptin-deficient ob/ob mice were treated with tungstate. In lean animals, tungstate administration reduced body weight gain and food intake and increased energy expenditure. However, in animals with deficiencies in the leptin system, treatment did not modify these parameters. In ob/ob mice in which leptin deficiency was restored through adipose tissue transplantation, treatment restored the tungstate-induced body weight gain and food intake reduction as well as energy expenditure increase. Furthermore, in animals in which tungstate administration increased energy expenditure, changes in the expression of key genes involved in brown adipose tissue thermogenesis were detected. Finally, the gene expression of the hypothalamic neuropeptides, Npy, Agrp, and Cart, involved in the leptin regulation of energy homeostasis, was also modified by tungstate in a leptin-dependent manner. In summary, the results indicate that the effectiveness of tungstate in reducing body weight gain is completely dependent on a functional leptin system. Anti-obesity activity of tungstate is due to an increase in thermogenesis and a reduction in food intake and depends entirely on a functional leptin system.


1969 ◽  
Vol 22 (6) ◽  
pp. 1507 ◽  
Author(s):  
WF Colebrook ◽  
PJ Reis

Supplements (supplying c. 100 g protein per day) of whole egg protein, egg albumen, maize gluten, and gelatin were given to sheep via the abomasum and the effects on wool growth rate, body weight gain, and nitrogen retention were compared with those of casein.


1970 ◽  
Vol 2 (1) ◽  
pp. 45-48 ◽  
Author(s):  
MS Islam ◽  
MER Bhuiyan ◽  
MIA Begum ◽  
MA Miah ◽  
M Myenuddin

This experiment was conducted to study the effect of vitamin-mineral premix supplementation on body weight gain and certain haemato-biochemical parameters in 20 broiler chickens of Shaver Star Bro strain, aged 20 days old during the period from 21st January to 10th February 2002. The chickens of three groups fed with a commercial ration supplemented with vitamin-mineral premix (Provita®, Arifs Bangladesh Ltd.) @ 1%, 2%, and 4% of total feed for a period of 21 days. Significantly (p < 0.05) higher body weight gain was recorded on 7th, 14th and 21st days of experiment in all the supplemented groups in comparison to control. Among the treated groups, highest body weight gain was recorded in 4% vitamin-mineral supplemented group (2007 ± 4.88 g) and lowest in 1% supplemented group (1823 ± 6.24 g) at 21st day of experiment. Haematological study revealed insignificant increase in TEC, Hb, ESR and PCV in all the vitamin-mineral premix supplemented groups. The lymphocytes were increased at a dose dependent manner and were significantly (p < 0.05) higher (68.60 ± 0.49) in 4% vitamin-mineral supplemented group but the heterophils were significantly (p < 0.05) lower (25.20 ± 0.38) in that group at 21st days of experiment. Total serum protein, albumin and globulin values were significantly (p < 0.05) increased in 2% (11.48 ± 0.34 mg / dl, 6.64 ± 0.30 mg / dl and 4.84 ± 0.13 mg / dl respectively) and 4% (15.20 ± 0.17 mg / dl, 8.98 ± 0.08 mg / dl and 6.22 ± 0.10 mg / dl respectively) vitamin-mineral supplemented groups. It is therefore, suggested that supplementation of vitamin-mineral premix with commercial poultry ration is essential for proper growth and body resistance of poultry.   Key words: Effects; vitamin-mineral premix; body weight; haemato-biochemical values; broiler chickensdoi: 10.3329/bjvm.v2i1.1934 Bangl. J. Vet. Med. (2004). 2 (1) : 45-48


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