scholarly journals Time-course morphological and functional disorders of the kidney induced by long-term high-fat diet intake in female rats

2013 ◽  
Vol 28 (10) ◽  
pp. 2464-2476 ◽  
Author(s):  
C. S. Pinhal ◽  
A. Lopes ◽  
D. B. Torres ◽  
S. L. Felisbino ◽  
J. A. Rocha Gontijo ◽  
...  
2016 ◽  
Vol 60 (1) ◽  
pp. 28536 ◽  
Author(s):  
Noemi A. V. Roza ◽  
Luiz F. Possignolo ◽  
Adrianne C. Palanch ◽  
José A. R. Gontijo

2010 ◽  
Vol 26 (3) ◽  
pp. 291-302 ◽  
Author(s):  
Antònia Nadal-Casellas ◽  
Emilia Amengual-Cladera ◽  
Ana María Proenza ◽  
Isabel Lladó ◽  
Magdalena Gianotti

Obesity ◽  
2020 ◽  
Vol 28 (5) ◽  
pp. 942-952 ◽  
Author(s):  
Calyn B. Maske ◽  
Isabel I. Coiduras ◽  
Zeleen E. Ondriezek ◽  
Sarah J. Terrill ◽  
Diana L. Williams

Author(s):  
Sara Pereira Silva ◽  
José Ivo Araújo Beserra-Filho ◽  
Melina Chiemi Kubota ◽  
Gabriela Nascimento Cardoso ◽  
Francisca Rayanne Silva Freitas ◽  
...  

2016 ◽  
Vol 8 (1) ◽  
pp. 89-100 ◽  
Author(s):  
V. H. G. Rizzi ◽  
L. d. B. Sene ◽  
C. D. B. Fernandez ◽  
J. A. R. Gontijo ◽  
P. A. Boer

Emerging evidence highlights the far-reaching consequences of high-fat diet (HFD) and obesity on kidney morphological and functional disorders. In the present study, we aim to evaluate the effects of early HFD intake on renal function and morphology in maternal protein-restricted offspring (LP). LP and normal protein-intake offspring (NP) were fed HFD (LPH and NPH, respectively) or standard rodent (LPN and NPN) diet from the 8th to 13th week of age. Blood pressure, kidney function, immunohistochemistry and scanning electron microscopy were analyzed. Increased total cholesterol and low-density lipoprotein serum levels were observed in LPH offspring. The adiposity index was reduced in the (LPN) group and, conversely, increased in the NPH and LPH groups. Blood pressure was higher beyond the 10th week of age in the LPH group compared with the other groups. Decreased urinary sodium excretion was observed in LP offspring, whereas the HFD-treated groups presented a decreased urine pH in a time-dependent fashion. The LPN, NPH and LPH groups showed increased expression of type 1 angiotensin II (AngII) receptor (AT1R), TGF-β1, collagen and fibronectin in the kidneys. Moreover, the adult fetal-programmed offspring showed pronounced effacement of the podocyte foot process associated with the rupture of cell membranes and striking urinary protein excretion, exacerbated by HFD treatment. To the best of our knowledge, this is the first study demonstrating that young fetal-programmed offspring submitted to long-term HFD intake have increased susceptibility to renal structural and functional disorders associated with an accentuated stage of fibrosis and tubular dysfunction.


1997 ◽  
Vol 272 (1) ◽  
pp. E147-E154 ◽  
Author(s):  
A. P. Rocchini ◽  
P. Marker ◽  
T. Cervenka

The current study evaluated both the time course of insulin resistance associated with feeding dogs a high-fat diet and the relationship between the development of insulin resistance and the increase in blood pressure that also occurs. Twelve adult mongrel dogs were chronically instrumented and randomly assigned to either a control diet group (n = 4) or a high-fat diet group (n = 8). Insulin resistance was assessed by a weekly, single-dose (2 mU.kg-1.min-1) euglycemic-hyperinsulinemic clamp on all dogs. Feeding dogs a high-fat diet was associated with a 3.7 +/- 0.5 kg increase in body weight, a 20 +/- 4 mmHg increase in mean blood pressure, a reduction in insulin-mediated glucose uptake [(in mumol-kg-1.min-1) decreasing from 72 +/- 6 before to 49 +/- 7 at 1 wk, 29 +/- 3 at 3 wk, and 30 +/- 2 at 6 wk of the high-fat diet, P < 0.01]. and a reduced insulin-mediated increase in cardiac output. In eight dogs (4 high fat and 4 control), the dose-response relationship of insulin-induced glucose uptake also was studied. The whole body glucose uptake dose-response curve was shifted to the right, and the rate of maximal whole body glucose uptake was significantly decreased (P < 0.001). Finally, we observed a direct relationship between the high-fat diet-induced weekly increase in mean arterial pressure and the degree to which insulin resistance developed. In summary, the current study documents that feeding dogs a high-fat diet causes the rapid development of insulin resistance that is the result of both a reduced sensitivity and a reduced responsiveness to insulin.


2021 ◽  
Author(s):  
Qi Guan ◽  
Xinwen Ding ◽  
Lingyue Zhong ◽  
Chuang Zhu ◽  
Pan Nie ◽  
...  

Long term high-fat diet (HF) can cause metabolic disorders, which might induce fatty liver. Fermented whole cereal food exhibit healthy potential due to their unique phytochemical composition and probiotics. In...


2021 ◽  
Vol 22 (4) ◽  
pp. 1647
Author(s):  
Brandi Miller ◽  
Rabina Mainali ◽  
Ravinder Nagpal ◽  
Hariom Yadav

The prevalence of type 2 diabetes mellitus (T2D) is increasing worldwide, and there are no long-term preventive strategies to stop this growth. Emerging research shows that perturbations in the gut microbiome significantly contribute to the development of T2D, while microbiome modulators may be beneficial for T2D prevention. However, microbiome modulators that are effective, safe, affordable, and able to be administered daily are not yet available. Based on our previous pro- and prebiotic studies, we developed a novel synbiotic yogurt comprised of human-origin probiotics and plant-based prebiotics and investigated its impact on diet- and streptozotocin-induced T2D in mice. We compared the effects of our synbiotic yogurt to those of a commercially available yogurt (control yogurt). Interestingly, we found that the feeding of the synbiotic yogurt significantly reduced the development of hyperglycemia (diabetes) in response to high-fat diet feeding and streptozotocin compared to milk-fed controls. Surprisingly, the control yogurt exacerbated diabetes progression. Synbiotic yogurt beneficially modulated the gut microbiota composition compared to milk, while the control yogurt negatively modulated it by significantly increasing the abundance of detrimental bacteria such as Proteobacteria and Enterobacteriaceae. In addition, the synbiotic yogurt protected pancreatic islet morphology compared to the milk control, while the control yogurt demonstrated worse effects on islets. These results suggest that our newly developed synbiotic yogurt protects against diabetes in mice and can be used as a therapeutic to prevent diabetes progression.


2021 ◽  
pp. 113470
Author(s):  
Everett Altherr ◽  
Aundrea Rainwater ◽  
Darian Kaviani ◽  
Qijun Tang ◽  
Ali D. Güler

2021 ◽  
pp. 1-14
Author(s):  
Jian Bao ◽  
Zheng Liang ◽  
Xiaokang Gong ◽  
Jing Yu ◽  
Yifan Xiao ◽  
...  

Background: Alzheimer’s disease (AD) is the most common form of dementia in older adults and extracellular accumulation of amyloid-β (Aβ) is one of the two characterized pathologies of AD. Obesity is significantly associated with AD developing factors. Several studies have reported that high fat diet (HFD) influenced Aβ accumulation and cognitive performance during AD pathology. However, the underlying neurobiological mechanisms have not yet been elucidated. Objective: The objective of this study was to explore the underlying neurobiological mechanisms of HFD influenced Aβ accumulation and cognitive performance during AD pathology. Methods: 2.5-month-old male APP/PS1 mice were randomly separated into two groups: 1) the normal diet (ND) group, fed a standard diet (10 kcal%fat); and 2) the HFD group, fed a high fat diet (40 kcal%fat, D12492; Research Diets). After 4 months of HFD or ND feeding, mice in the two groups were subjected for further ethological, morphological, and biochemical analyses. Results: A long-term HFD diet significantly increased perirenal fat and impaired dendritic integrity and aggravated neurodegeneration, and augmented learning and memory deficits in APP/PS1 mice. Furthermore, the HFD increased beta amyloid cleaving enzyme 1 (BACE1) dephosphorylation and SUMOylation, resulting in enhanced enzyme activity and stability, which exacerbated the deposition of amyloid plaques. Conclusion: Our study demonstrates that long-term HFD consumption aggravates amyloid-β accumulation and cognitive impairments, and that modifiable lifestyle factors, such as obesity, can induce BACE1 post-modifications which may contribute to AD pathogenesis.


Sign in / Sign up

Export Citation Format

Share Document