Hyperglycemia in COVID-19 infection without diabetes mellitus:Association with inflammatory markers

作     者：Harinivaas Shanmugavel Geetha Garima Singh Abinesh Sekar Maya Gogtay Yuvaraj Singh George MAbraham Nitin Trivedi 

作者机构：Department of Internal MedicineSaint Vincent HospitalWorcesterMA 01608United States Department of Hospice and Palliative MedicineUniversity of Texas HealthSan AntonioTX 78229United States Department of Internal MedicineUniversity of Massachusetts Chan Medical SchoolWorcesterMA 01655United States 

出 版 物：《World Journal of Clinical Cases》 (世界临床病例杂志)

年 卷 期：2023年第11卷第6期

页      面：1287-1298页

核心收录：

学科分类：1002[医学-临床医学] 10[医学] 

基　　金：The study was reviewed and approved by our local Medical Center Institutional Review Board(Approval No.2020-035). 

主　　题：COVID-19 Inflammatory markers Hyperglycemia C-reactive protein Mortality Severity Mechanisms Diabetes mellitus 

摘      要：BACKGROUND New onset hyperglycemia is common in patients with severe coronavirus disease 2019(COVID-19)infection.Cytokine storm due to COVID-19 infection is an essential etiology for new-onset hyperglycemia,but factors like direct severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)-induced pancreaticβ-cell failure have also been postulated to play a role.AIM We plan to investigate further the mechanisms underlying SARS-CoV-2 infection-induced hyperglycemia,particularly the rationale of the cytokine-induced hyperglycemia hypothesis,by evaluating the association between inflammatory markers and new onset hyperglycemia in non-diabetic patients with COVID-19 infection.METHODS We conducted a retrospective case-control study on adults without diabetes mellitus hospitalized for COVID-19 infection.The serum levels of glucose and inflammatory markers at presentation before initiation of corticosteroid were collected.Hyperglycemia was defined as glucose levels≥140 mg/dL.C-Reactive protein(CRP)≥100 mg/L,ferritin≥530 ng/mL,lactate dehydrogenase(LDH)≥590 U/L,and D-dimer≥0.5 mg/L were considered elevated.We used theχ2 test for categorical variables and the Mann-Whitney U test for continuous variables and calculated the logistic regression for hyperglycemia.RESULTS Of the 520 patients screened,248 met the inclusion criteria.Baseline demographics were equally distributed between patients with hyperglycemia and those who were normoglycemic.Serum inflammatory markers in patients with or without new-onset hyperglycemia were elevated as follows:CRP(58.1%vs 65.6%,P=0.29),ferritin(48.4%vs 34.9%,P=0.14),D-dimer(37.1%vs 37.1%,P=0.76)and LDH(19.4%vs 11.8%,P=0.02).Logistic regression analysis showed LDH odds ratio(OR)=1.623(P=0.256).We observed significantly higher mortality(24.2%vs 9.1%,P=0.001;OR=2.528,P=0.024)and length of stay(8.89 vs 6.69,P=0.026)in patients with hyperglycemia.CONCLUSION Our study showed no association between CRP,ferritin,LDH,D-dimer levels,and new-onset hyperglycemia in non-diabetic patients with COVID-19 infection.It also shows an increased mortality risk and length of stay in patients with hyperglycemia.With new-onset hyperglycemia being closely associated with poor prognostic indices,it becomes pivotal to understand the underlying pathophysiological mechanisms behind the SARS-CoV-2 infection-induced hyperglycemia.We conclude that the stress hyperglycemia hypothesis is not the only mechanism of SARS-CoV-2 infection-induced hyperglycemia but rather a multicausal pathogenesis leading to hyperglycemia that requires further research and understanding.This would help us improve not only the clinical outcomes of COVID-19 disease and inpatient hyperglycemia management but also understand the long-term effects of SARS-CoV-2 infection and further management.