Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats
In certain disease states, such as epilepsy, the elevation of blood ketone levels with ketogenic diets (KDs) has beneficial effects, while exogenous ketone supplements (EKSs) were shown to increase the level of blood ketone bodies (such as β-hydroxybutyrate, βHB) and decrease blood glucose levels wi...
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| Language: | English |
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Frontiers Media S.A.
2021-01-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnins.2020.618422/full |
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| author | Zsolt Kovács Brigitta Brunner Brigitta Brunner Dominic P. D’Agostino Dominic P. D’Agostino Dominic P. D’Agostino Csilla Ari Csilla Ari |
| author_facet | Zsolt Kovács Brigitta Brunner Brigitta Brunner Dominic P. D’Agostino Dominic P. D’Agostino Dominic P. D’Agostino Csilla Ari Csilla Ari |
| author_sort | Zsolt Kovács |
| collection | DOAJ |
| description | In certain disease states, such as epilepsy, the elevation of blood ketone levels with ketogenic diets (KDs) has beneficial effects, while exogenous ketone supplements (EKSs) were shown to increase the level of blood ketone bodies (such as β-hydroxybutyrate, βHB) and decrease blood glucose levels without dietary restrictions. It has been suggested that ketone body and glucose utilization of the body may be modified by age and gender resulting in changes in blood βHB and glucose levels, but it was not investigated through several months yet. Thus, we investigated whether the effect of an EKS on blood βHB and glucose level is modulated by age and sex in Wistar Albino Glaxo Rijswijk (WAG/Rij) rats, a model animal of human absence epilepsy. We used KEMCT (1:1 mix of ketone ester/KE and medium-chain triglyceride/MCT oil) by oral gavage in female and male WAG/Rij rats. Animals were fed with standard diet, which was supplemented by KEMCT (2.5 g/kg) once per month by oral gavage for 17 months. One hour after KEMCT treatment, changes in blood R-beta-hydroxybutyrate (R-βHB) and glucose levels were measured. KEMCT gavage significantly increased blood R-βHB and decreased blood glucose levels, in both male and female rats, compared with the controls. In male rats, the KEMCT-induced increase in blood R-βHB levels was lower at the 7th and 8th months and higher at the 16th and 17th months, compared with the results at the 1st month. KEMCT-generated increase in R-βHB levels was higher in female rats, compared with male rats between the 2nd and 11th months, but older (between the 14th and 17th months) female rats showed lower levels than males. KEMCT gavage induced significantly lower glucose levels at the 4th, 9th, 10th, 12th, and 13th months in both sexes, but between the 14th and 17th months, only males showed significantly lower levels, compared with the results at the 1st month. KEMCT treatment induced lower blood glucose levels in female than in male rats between the 1st and 8th months, but higher glucose levels were measured in female rats at the 17th month than in males. These findings suggest that age and sex can modify the EKS-evoked effects on blood R-βHB and glucose concentrations. |
| first_indexed | 2024-12-13T12:08:47Z |
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| id | doaj.art-c2e69da505794c5aaf2d2217b0e24194 |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-12-13T12:08:47Z |
| publishDate | 2021-01-01 |
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| series | Frontiers in Neuroscience |
| spelling | doaj.art-c2e69da505794c5aaf2d2217b0e241942022-12-21T23:46:53ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2021-01-011410.3389/fnins.2020.618422618422Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk RatsZsolt Kovács0Brigitta Brunner1Brigitta Brunner2Dominic P. D’Agostino3Dominic P. D’Agostino4Dominic P. D’Agostino5Csilla Ari6Csilla Ari7Savaria Department of Biology, Savaria University Centre, ELTE Eötvös Loránd University, Szombathely, HungarySavaria Department of Biology, Savaria University Centre, ELTE Eötvös Loránd University, Szombathely, HungaryInstitute of Biology, Faculty of Sciences, University of Pécs, Pécs, HungaryLaboratory of Metabolic Medicine, Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, United StatesKetone Technologies LLC, Tampa, FL, United StatesInstitute for Human and Machine Cognition, Ocala, FL, United StatesKetone Technologies LLC, Tampa, FL, United StatesBehavioral Neuroscience Research Laboratory, Department of Psychology, University of South Florida, Tampa, FL, United StatesIn certain disease states, such as epilepsy, the elevation of blood ketone levels with ketogenic diets (KDs) has beneficial effects, while exogenous ketone supplements (EKSs) were shown to increase the level of blood ketone bodies (such as β-hydroxybutyrate, βHB) and decrease blood glucose levels without dietary restrictions. It has been suggested that ketone body and glucose utilization of the body may be modified by age and gender resulting in changes in blood βHB and glucose levels, but it was not investigated through several months yet. Thus, we investigated whether the effect of an EKS on blood βHB and glucose level is modulated by age and sex in Wistar Albino Glaxo Rijswijk (WAG/Rij) rats, a model animal of human absence epilepsy. We used KEMCT (1:1 mix of ketone ester/KE and medium-chain triglyceride/MCT oil) by oral gavage in female and male WAG/Rij rats. Animals were fed with standard diet, which was supplemented by KEMCT (2.5 g/kg) once per month by oral gavage for 17 months. One hour after KEMCT treatment, changes in blood R-beta-hydroxybutyrate (R-βHB) and glucose levels were measured. KEMCT gavage significantly increased blood R-βHB and decreased blood glucose levels, in both male and female rats, compared with the controls. In male rats, the KEMCT-induced increase in blood R-βHB levels was lower at the 7th and 8th months and higher at the 16th and 17th months, compared with the results at the 1st month. KEMCT-generated increase in R-βHB levels was higher in female rats, compared with male rats between the 2nd and 11th months, but older (between the 14th and 17th months) female rats showed lower levels than males. KEMCT gavage induced significantly lower glucose levels at the 4th, 9th, 10th, 12th, and 13th months in both sexes, but between the 14th and 17th months, only males showed significantly lower levels, compared with the results at the 1st month. KEMCT treatment induced lower blood glucose levels in female than in male rats between the 1st and 8th months, but higher glucose levels were measured in female rats at the 17th month than in males. These findings suggest that age and sex can modify the EKS-evoked effects on blood R-βHB and glucose concentrations.https://www.frontiersin.org/articles/10.3389/fnins.2020.618422/fullketone supplementationketone esterβ-hydroxybutyrateagingsexglycemia |
| spellingShingle | Zsolt Kovács Brigitta Brunner Brigitta Brunner Dominic P. D’Agostino Dominic P. D’Agostino Dominic P. D’Agostino Csilla Ari Csilla Ari Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats Frontiers in Neuroscience ketone supplementation ketone ester β-hydroxybutyrate aging sex glycemia |
| title | Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats |
| title_full | Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats |
| title_fullStr | Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats |
| title_full_unstemmed | Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats |
| title_short | Age- and Sex-Dependent Modulation of Exogenous Ketone Supplement-Evoked Effects on Blood Glucose and Ketone Body Levels in Wistar Albino Glaxo Rijswijk Rats |
| title_sort | age and sex dependent modulation of exogenous ketone supplement evoked effects on blood glucose and ketone body levels in wistar albino glaxo rijswijk rats |
| topic | ketone supplementation ketone ester β-hydroxybutyrate aging sex glycemia |
| url | https://www.frontiersin.org/articles/10.3389/fnins.2020.618422/full |
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