Glucose metabolism during androgen deprivation therapy with GNRH agonists


DOI: https://dx.doi.org/10.18565/therapy.2020.8.36-46

Demidova T.Yu., Gritskevich E.Yu., Maturov M.R., Bystrov A.A.

1) N.I. Pirogov Russian National Research Medical University of the Ministry of Healthcare of Russia, Moscow; 2) D.D. Pletnev Municipal Clinical Hospital of Moscow Healthcare Department; 3) Moscow Municipal Oncology Hospital No. 62 of Moscow Healthcare Department
Purpose: to study the impact of gonadotropin-releasing hormone agonists (aGnRH) in patients with locally advanced prostate cancer (PCa) on the parameters of carbohydrate metabolism.
Materials and methods. The study included 102 patients with PCa, receiving androgen-deprivation therapy (ADT) with aGnRH, 99 people completed it. Their average age was 69,11±8,64 years. To assess glucose metabolism, the level of glycohemoglobin (HbA1c), fasting plasma glucose (FPG) was studied before the start of ADT, after 3, 6 and 12 months from the start of therapy. For a more detailed determination of the patterns of daily changes in glycemia, 10 patients were installed with Flash glucose monitoring systems, which allow obtaining data of the «ambulatory glycemic profile», the following indices of variability were calculated to calculate the variability indices: AUC, MAGE, CONGA, J-index and HGBI.
Results. The following changes in the studied parameters were recorded: Metabolic parameters at baseline, after 3, 6 and 12 months, respectively: HbA1c 5,36%, 5,66 (+5,5%), 5,77 (+7,5%), 5,89 (+9,9%); fasting plasma glucose 5,18 ммоль/л, 5,67 (+9,5%), 5,77 (+11,4%), 5,90 (+13,9%) (for all differences p <0,05). According to Flash-monitoring data, early disorders of glucose metabolism were revealed: basal glycemic values ​​exceed 5,6 mmol/l, prandial peaks are higher than 7,8 mmol/l, and variability indices are higher than those of healthy persons of similar age, and CONGA exceeds the recommended value for patients with diabetes mellitus.
Conclusion. It was found that continuous ADT by GnRH agonists is accompanied by a permanent progressive deterioration of glucose metabolism indicators: fasting plasma glucose, HbA1c, glycemic variability. These disorders are early – their maximum change falls on the first 3 months of therapy. However, further, during the year, the increase in indicators remains, in connection with which there is a transition of early forms of carbohydrate metabolism disorders into the category of diabetes mellitus. It is necessary to further study the metabolic consequences of ADT and expand knowledge about the timing, conditions and risk factors of their development to determine the timing of potential intervention in order to prevent the negative consequences of ADT.

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About the Autors


Tatyana Yu. Demidova, MD, professor, head of the Department of endocrinology, faculty of general medicine of N.I. Pirogov Russian National Research Medical University of the Ministry of Healthcare of Russia. Address: 109263, Moscow, 4/1 Shkuleva Str. E-mail: t.y.demidova@gmail.com. ORCID: 0000-0001-6385-540X. Scopus Author ID: 7003771623. eLIBRARY.RU SPIN: 9600-9796
Elena Yu. Gritskevich, assistant of the Department of endocrinology, faculty of general medicine of N.I. Pirogov Russian National Research Medical University of the Ministry of Healthcare of Russia. Address: 109263, Moscow, 4/1 Shkuleva Str. E-mail: genyan.7@mail.ru. ORCID: 0000-0002-0086-869X. eLIBRARY.RU SPIN: 4125-2055
Mikhail R. Maturov, oncologist of D.D. Pletnev Municipal Clinical Hospital of Moscow Healthcare Department. Address: 105264, Moscow, 29 Verkhnyaya Pervomayskaya. E-mail: mihail.maturov@yandex.ru
Alexander A. Bystrov, PhD, oncologist of Moscow Municipal Oncology Hospital No. 62 of Moscow Healthcare Department (outpatient unit). Address: 125130, Moscow, 6/2 Staropetrovsky passage. E-mail: bystrov@list.ru


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