Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?

Background/Aim: Secondary failure of oral therapy occurs after a long period of successful use of oral antidiabetic drugs. The exact mechanism of its occurrence is not known. Recent data suggest heterogeneity of this phenomenon, analogous that of type 2 diabetes pathogenesis. Research objective was...

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Main Authors: Marković Aleksandra, Dojčinović Tamara, Risović Ivona, Grujičić Milorad, Malinović-Pančić Jelena
Format: Article
Language:English
Published: Medical Society of the Republic of Srpska, Banja Luka, University of Banja Luka. Faculty of Medicine 2025-01-01
Series:Scripta Medica
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Online Access:https://scindeks-clanci.ceon.rs/data/pdf/2490-3329/2025/2490-33292501093M.pdf
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author Marković Aleksandra
Dojčinović Tamara
Risović Ivona
Grujičić Milorad
Malinović-Pančić Jelena
author_facet Marković Aleksandra
Dojčinović Tamara
Risović Ivona
Grujičić Milorad
Malinović-Pančić Jelena
author_sort Marković Aleksandra
collection DOAJ
description Background/Aim: Secondary failure of oral therapy occurs after a long period of successful use of oral antidiabetic drugs. The exact mechanism of its occurrence is not known. Recent data suggest heterogeneity of this phenomenon, analogous that of type 2 diabetes pathogenesis. Research objective was to assess glucoregulation and insulin secretory function before, three months after the use of insulin therapy and three months after the exclusion and re-introduction of oral antidiabetic therapy. Methods: Forty-nine patients with unsatisfactory glycaemic control were selected and insulin therapy in four daily doses (basal-bolus regimen) was subsequently initiated. Glycaemic regulation and beta cell function (C-peptide and insulinemia) were monitored at three time points: before starting insulin therapy, three months after initiating insulin and three months after discontinuing insulin and resuming the previously used oral antidiabetics. Results: After the introduction of insulin therapy, there was a significant improvement in glycaemic regulation parameters (p < 0.001). Improvements in beta-cell function and reductions in insulin resistance were confirmed during the period after insulin therapy (p < 0.001). However, a certain deterioration in these parameters was observed following the discontinuation of insulin therapy. Additionally, there was a slight decrease in C-peptide and an increase in insulinemia, though these changes were not statistically significant. Conclusion: Application of intensified insulin therapy for three months leads to improvement of glucoregulation and partial recovery of the secretory function of the endocrine pancreas. The reintroduction of oral antidiabetic therapy led to a slight worsening of the observed parameters, although this change was not statistically significant.
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spelling doaj-art-65d7f637b67d472c95b8d927cbdabebc2025-08-20T01:51:35ZengMedical Society of the Republic of Srpska, Banja Luka, University of Banja Luka. Faculty of MedicineScripta Medica2490-33292303-79542025-01-01561939810.5937/scriptamed56-526832490-33292501093MSecondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?Marković Aleksandra0https://orcid.org/0009-0006-2979-2058Dojčinović Tamara1https://orcid.org/0009-0007-1183-8940Risović Ivona2https://orcid.org/0000-0002-3391-9801Grujičić Milorad3https://orcid.org/0009-0007-9076-554XMalinović-Pančić Jelena4https://orcid.org/0009-0001-0171-5927University Clinical Centre of the Republic of Srpska, Internal Medicine Department, Banja Luka, The Republic of Srpska, Bosnia and HerzegovinaUniversity Clinical Centre of the Republic of Srpska, Internal Medicine Department, Banja Luka, The Republic of Srpska, Bosnia and HerzegovinaUniversity Clinical Centre of the Republic of Srpska, Internal Medicine Department, Banja Luka, The Republic of Srpska, Bosnia and HerzegovinaUniversity Clinical Centre of the Republic of Srpska, Internal Medicine Department, Banja Luka, The Republic of Srpska, Bosnia and HerzegovinaUniversity Clinical Centre of the Republic of Srpska, Internal Medicine Department, Banja Luka, The Republic of Srpska, Bosnia and HerzegovinaBackground/Aim: Secondary failure of oral therapy occurs after a long period of successful use of oral antidiabetic drugs. The exact mechanism of its occurrence is not known. Recent data suggest heterogeneity of this phenomenon, analogous that of type 2 diabetes pathogenesis. Research objective was to assess glucoregulation and insulin secretory function before, three months after the use of insulin therapy and three months after the exclusion and re-introduction of oral antidiabetic therapy. Methods: Forty-nine patients with unsatisfactory glycaemic control were selected and insulin therapy in four daily doses (basal-bolus regimen) was subsequently initiated. Glycaemic regulation and beta cell function (C-peptide and insulinemia) were monitored at three time points: before starting insulin therapy, three months after initiating insulin and three months after discontinuing insulin and resuming the previously used oral antidiabetics. Results: After the introduction of insulin therapy, there was a significant improvement in glycaemic regulation parameters (p < 0.001). Improvements in beta-cell function and reductions in insulin resistance were confirmed during the period after insulin therapy (p < 0.001). However, a certain deterioration in these parameters was observed following the discontinuation of insulin therapy. Additionally, there was a slight decrease in C-peptide and an increase in insulinemia, though these changes were not statistically significant. Conclusion: Application of intensified insulin therapy for three months leads to improvement of glucoregulation and partial recovery of the secretory function of the endocrine pancreas. The reintroduction of oral antidiabetic therapy led to a slight worsening of the observed parameters, although this change was not statistically significant.https://scindeks-clanci.ceon.rs/data/pdf/2490-3329/2025/2490-33292501093M.pdfpharmaceuticstherapyinsulinfailurediabetes mellitus type 2treatment switchingadministration, oral
spellingShingle Marković Aleksandra
Dojčinović Tamara
Risović Ivona
Grujičić Milorad
Malinović-Pančić Jelena
Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
Scripta Medica
pharmaceutics
therapy
insulin
failure
diabetes mellitus type 2
treatment switching
administration, oral
title Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
title_full Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
title_fullStr Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
title_full_unstemmed Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
title_short Secondary failure of oral therapy in patients with type 2 diabetes: How to overcome it?
title_sort secondary failure of oral therapy in patients with type 2 diabetes how to overcome it
topic pharmaceutics
therapy
insulin
failure
diabetes mellitus type 2
treatment switching
administration, oral
url https://scindeks-clanci.ceon.rs/data/pdf/2490-3329/2025/2490-33292501093M.pdf
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AT dojcinovictamara secondaryfailureoforaltherapyinpatientswithtype2diabeteshowtoovercomeit
AT risovicivona secondaryfailureoforaltherapyinpatientswithtype2diabeteshowtoovercomeit
AT grujicicmilorad secondaryfailureoforaltherapyinpatientswithtype2diabeteshowtoovercomeit
AT malinovicpancicjelena secondaryfailureoforaltherapyinpatientswithtype2diabeteshowtoovercomeit