An attempt to differentiate dysmetabolism variants based on biological age in combination with the induction of physiological ketosis: mini-review and own results

Volume 7, Issue 1, February 2023     |     PP. 1-13      |     PDF (226 K)    |     Pub. Date: January 25, 2023
DOI: 10.54647/pmh33243    107 Downloads     102982 Views  

Author(s)

Marakhouski Y.K., State Educational Institution "Belarusian Medical Academy of Postgraduate Education", Minsk, Belarus
Zharskaya O.M., State Educational Institution "Belarusian Medical Academy of Postgraduate Education", Minsk, Belarus

Abstract
Background. Metabolic flexibility describes the body's adaptive ability to changing metabolic or energy requirements.
Objective. To determine the possibility of detecting dysmetabolism based on bioimpedancometry (systemic dysmetabolism) and metabolic flexibility (local dysmetabolism) by the intensity of switching from the glucogenic to the ketogenic variant of energy supply. Biological (metabolic) clock was calculated by the difference between chronological age (CHR-age) minus biological (metabolic) age (MET-age), as more than 1year difference.
Material and Methods. The biological age was determined with tetrapolar bioimpedansometry. The amino acid L-lysine was taken orally to induce ketosis, the content of ketones in the exhaled air was dynamically recorded for 3 hours.
Results. Group with younger MET-age FM(fate mass): r = -0,36; p = 0,04( y = 18,1 - 0,08*x) and intracellular fluid (ICF): r = -0,5 p = 0,002( y = 1796,2 - 8,9*x) and group with older MET-age - ICF: r = -0,32; p = 0,074 (y = 24,38 - 0,08*x) (not significant or loss of reliability), FM: r = -0,36; p = 0,04 (y = 18,1 - 0,08*x). At the same time, highly sensitive CRP (hsCRP) above 5 mg/l was found much more often in group (26% v.s.2%, Chi-square (df=1) - 6,50, p= 0,01), as well as cholesterol over 6.5 mmol/l. Moreover, hsCRP significant more higher in older MET-age group: mean - 3,5 (95%CI =2,3 - 4,7) v.s. 1,9 (95%CI=1,5 - 2,3). These data clearly indicate the presence metabolic dysfunction (systemic dysmetabolism) in the group with premature metabolic (biological) age. A significant relationship was found between the degree of hepatic ketosis and the difference between biological and chronological age, i.e. younger age was characterized by higher metabolic flexibility. The KETO-MET-younger group (group-2) has significantly more Body Cells Mass (BCM) proportion (50,5 (95%CI =50,0-51,1) v.s. 43,9(95%CI =42,8-45,0) ) and less content of Fat Mass (in kg) (14,7 (95%CI =13,7-15,6) v.s. 27,9(95%CI =25,3-30,5), according to the results of BIM-V. KETO-Lysine test revealed a significantly more frequent increase in blood ALT activity (more than 30 IU) in the older MET-age group (41% vs. 5%),
Conclusions. The results deepen the scientific understanding of the metabolic flexibility assessment according to the original indicator - the induction of physiological ketosis by an amino acid metabolized in the liver, and make it possible to implement a personalized approach in the diagnosis and differentiation of metabolic disorders.

Keywords
Metabolic flexibility, bioimpedancometry, ketosis, biological age.

Cite this paper
Marakhouski Y.K., Zharskaya O.M., An attempt to differentiate dysmetabolism variants based on biological age in combination with the induction of physiological ketosis: mini-review and own results , SCIREA Journal of Health. Volume 7, Issue 1, February 2023 | PP. 1-13. 10.54647/pmh33243

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