Sodium glucose cotransporter2 inhibitor-possible treatment for patients with diabetes, pulmonary disease and CO2 retention

Use of Sodium-glucose cotransporter 2 (SGLT 2) inhibitor is associated with reduced emergency room visits and hospitalizations in patients with Chronic obstructive pulmonary disease (COPD) and type 2 Diabetes Mellitus

BACKGROUND

The Sodium-Glucose Cotransporter 2 inhibitors (SGLT2i) are a class of anti-diabetic medications that confer cardio-renal-metabolic (CRM) benefits. Emerging evidence also suggests that these agents provide better benefits for chronic pulmonary conditions, especially chronic obstructive pulmonary disease (COPD).

RESEARCH QUESTION

We aimed to assess the association between SGLT2i use and outcomes in patients with COPD and concomitant Type 2 Diabetes Mellitus (T2DM).

STUDY DESIGN AND METHODS

We conducted a retrospective cohort study on adults with T2DM and COPD in a primary care clinic from January 01, 2019 to 01/01//2023. Patients were categorized into two groups based on SGLT2i use. We collected demographic information and outcomes such as emergency room (ER) visits, hospitalizations secondary to COPD exacerbation over the period of four years and time to hospitalization and ER visits. Chi-square analysis was used for categorical variables, whereas an unpaired t-test was used for continuous variables. Cox regression was performed to identify significant prognostic factors of hospitalization and ER visits. A Kaplan-Meir analysis was used to visualize the probability of non-hospitalization and the probability of not visiting the ER. Statistical significance was set at p-value <0.05.

RESULTS

Of the 220 patients screened, 94 met the inclusion criteria, of which 20 patients (21.3 %) had SGLT2i use at admission, and 74 (78.7 %) did not. Baseline demographic information were well-matched between the two groups. SGLT2i use was associated with a significant reduction in ER visits (70 % vs. 97.3 %, p-0.001) and the number of hospitalizations (55 % vs 87.8 %, p-0.001). Further multivariate analysis showed lower hazards of hospitalization (adjusted HR-0.156; CI:0.073 to 0.331) and ER visits (HR)-0.232; CI:0.118 to 0.453) in patients on SGLT2i.

INTERPRETATION

In patients with T2DM with COPD, SGLT2i use was associated with reduced ER visits and hospitalizations related to COPD. This protective effect of SGLT2i could be explained by reduced systemic proinflammatory markers and increased anti-inflammatory markers via inhibition of Node like receptor protein 3(NLRP3) inflammasome activation in multiple tissues, including the lungs.

Association of Novel Antihyperglycemic Drugs Versus Metformin With a Decrease in Asthma Exacerbations

BACKGROUND

Similar to metformin, dipeptidyl peptidase-4 inhibitors (DPP-4 Is), glucagon-like peptidase 1 receptor agonists (GLP-1 RAs), and sodium glucose co-transporter-2 inhibitors (SGLT-2 Is) may improve control of asthma owing to their multiple potential mechanisms, including differential improvements in glycemic control, direct anti-inflammatory effects, and systemic changes in metabolism.

OBJECTIVE

To investigate whether these novel antihyperglycemic drugs were associated with fewer asthma exacerbations compared with metformin in patients with asthma comorbid with type 2 diabetes.

METHODS

Using a Japanese national administrative database, we constructed 3 active comparators-new user cohorts of 137,173 patients with a history of asthma starting the novel antihyperglycemic drugs and metformin between 2014 and 2022. Patient characteristics were balanced using overlap propensity score weighting. The primary outcome was the first exacerbation requiring systemic corticosteroids, and the secondary outcomes included the number of exacerbations requiring systemic corticosteroids.

RESULTS

DPP-4 Is and GLP-1 RAs were associated with a higher incidence of exacerbations requiring systemic corticosteroids compared with metformin (DPP-4 Is: 18.2 vs 17.4 per 100 person-years, hazard ratio: 1.09, 95% confidence interval [CI]: 1.05-1.14; GLP-1 RAs: 24.9 vs 19.0 per 100 person-years, hazard ratio: 1.14, 95% CI: 1.01-1.28). In contrast, the incidence of exacerbations requiring systemic corticosteroids was similar between the SGLT-2 Is and metformin groups (17.3 vs 18.1 per 100 person-years, hazard ratio: 1.00, 95% CI: 0.97-1.03). While DPP-4 Is and GLP-1 RAs were associated with more exacerbations requiring systemic corticosteroids, SGLT-2 Is were associated with slightly fewer exacerbations requiring systemic corticosteroids (53.7 vs 56.6 per 100 person-years, rate ratio: 0.95, 95% CI: 0.91-0.99).

CONCLUSIONS

While DPP-4 Is and GLP-1 RAs were associated with poorer control of asthma compared with metformin, SGLT-2 Is offered asthma control comparable to that of metformin.

Association of COPD with adverse outcomes in heart failure patients with preserved ejection fraction

We performed a systematic review and meta-analysis to detect the impact of chronic obstructive pulmonary disease (COPD) on the prognosis of heart failure patients with preserved ejection fraction (HFpEF). We systematically screened eligible literature from three electronic databases, PubMed, EMBASE and Cochrane Library, up to April 2023. Two researchers participated in data collection independently. Risk ratios (RRs) from included studies with 95% confidence intervals (CIs) were pooled in the Review Manager version 5.40 software using a random-effects model for analysis. A total of 11 studies (3 post hoc analyses of RCTs and 8 observational studies) with 18 602 participants were included in this meta-analysis. After pooling all the data from eligible studies, our results indicated that COPD was associated with an increased risk of hospitalization (RR = 1.66, 95% CI, 1.47-1.87, P < 0.00001), mortality (RR = 1.62, 95% CI, 1.34-1.95, P < 0.00001), and the composition of hospitalization or mortality (RR = 1.84, 95% CI, 1.35-2.51, P < 0.001) in patients with HFpEF. In a subgroup analysis, the risks of cardiovascular-related mortality (RR = 1.59, 95% CI, 1.30-1.93, P < 0.00001) and post-discharge mortality risk (RR = 2.57, 1.34-4.93, P < 0.01) were increased in HFpEF patients comorbid with COPD, and these associations were also detected in HF-caused hospitalization (RR = 1.64, 95% CI, 1.44-1.87, P < 0.00001). Evidence from existing studies supported that COPD was an independent prognostic risk factor for patients with HFpEF. Developing rapid clinical diagnostic indicators and early use of novel drugs such as SGLT-2 and ARNI may improve the prognosis of this population, deserving further study.

Novel antihyperglycaemic drugs and prevention of chronic obstructive pulmonary disease exacerbations among patients with type 2 diabetes: population based cohort study

OBJECTIVE

To determine whether the use of glucagon-like peptide 1 (GLP-1) receptor agonists, dipeptidyl peptidase 4 (DPP-4) inhibitors, and sodium-glucose co-transporter-2 (SGLT-2) inhibitors, separately, is associated with a decreased risk of exacerbations of chronic obstructive pulmonary disease among patients with chronic obstructive pulmonary disease and type 2 diabetes.

DESIGN

Population based cohort study using an active comparator, new user design.

SETTING

The United Kingdom Clinical Practice Research Datalink linked with the Hospital Episode Statistics Admitted Patient Care and Office for National Statistics databases.

PARTICIPANTS

Three active comparator, new user cohorts of patients starting the study drugs (GLP-1 receptor agonists, DPP-4 inhibitors, or SGLT-2 inhibitors) or sulfonylureas with a history of chronic obstructive pulmonary disease. The first cohort included 1252 patients starting GLP-1 receptor agonists and 14 259 starting sulfonylureas, the second cohort included 8731 patients starting DPP-4 inhibitors and 18 204 starting sulfonylureas, and the third cohort included 2956 patients starting SGLT-2 inhibitors and 10 841 starting sulfonylureas.

MAIN OUTCOME MEASURES

Cox proportional hazards models with propensity score fine stratification weighting were fitted to estimate hazard ratios and 95% confidence intervals of severe exacerbation of chronic obstructive pulmonary disease (defined as hospital admission for chronic obstructive pulmonary disease), separately for GLP-1 receptor agonists, DPP-4 inhibitors, and SGLT-2 inhibitors. Whether these drugs were associated with a decreased risk of moderate exacerbation (defined as a co-prescription of an oral corticosteroid and an antibiotic along with an outpatient diagnosis of acute chronic obstructive pulmonary disease exacerbation on the same day) was also assessed.

RESULTS

Compared with sulfonylureas, GLP-1 receptor agonists were associated with a 30% decreased risk of severe exacerbation (3.5 v 5.0 events per 100 person years; hazard ratio 0.70, 95% confidence interval 0.49 to 0.99) and moderate exacerbation (0.63, 0.43 to 0.94). DPP-4 inhibitors were associated with a modestly decreased incidence of severe exacerbation (4.6 v. 5.1 events per 100 person years; hazard ratio 0.91, 0.82 to 1.02) and moderate exacerbation (0.93, 0.82 to 1.07), with confidence intervals including the null value. Finally, SGLT-2 inhibitors were associated with a 38% decreased risk of severe exacerbation (2.4 v 3.9 events per 100 person years; hazard ratio 0.62, 0.48 to 0.81) but not moderate exacerbation (1.02, 0.83 to 1.27).

CONCLUSIONS

In this population based study, GLP-1 receptor agonists and SGLT-2 inhibitors were associated with a reduced risk of severe exacerbations compared with sulfonylureas in patients with chronic obstructive pulmonary disease and type 2 diabetes. DPP-4 inhibitors were not clearly associated with a decreased risk of chronic obstructive pulmonary disease exacerbations.

Use of SGLT2 inhibitors and occurrence of noninfectious respiratory disorders: a meta-analysis of large randomized trials of SGLT2 inhibitors

PURPOSE

The impact of use of sodium-glucose transporter 2 (SGLT2) inhibitors on occurrence of various kinds of respiratory disorders has not been established. We aimed at evaluating the relationship between use of SGLT2 inhibitors and occurrence of 9 kinds of noninfectious respiratory disorders.

METHODS

Large randomized controlled trials (RCTs) of SGLT2 inhibitors were included in this study. We conducted fixed-effects meta-analysis to synthesize risk ratios (RRs) and 95% confidence intervals (CIs). We did subgroup analysis respectively stratified by type of underlying diseases and type of SGLT2 inhibitors.

RESULTS

Nine Large RCTs were included for analysis. Compared with placebo, SGLT2 inhibitors significantly reduced the occurrence of overall respiratory disorders (RR 0.75, 95% CI 0.62-0.91), acute pulmonary oedema (RR 0.51, 95% CI 0.29-0.88), asthma (RR 0.57, 95% CI 0.33-0.995), and sleep apnoea syndrome (RR 0.35, 95% CI 0.12-0.99). SGLT2 inhibitors showed the reduced trends in the risks of chronic obstructive pulmonary disease (COPD) (RR 0.79, 95% CI 0.61-1.02; P = 0.073) and pulmonary hypertension (RR 0.43, 95% CI 0.16-1.17; P = 0.098). SGLT2 inhibitors had no significant effects on three other respiratory disorders. These effects exhibited by SGLT2 inhibitors were consistent across different underlying diseases (P_subgroup ≥0.209) and different SGLT2 inhibitors (P_subgroup ≥0.192).

CONCLUSIONS

SGLT2 inhibitors can significantly reduce the occurrence of acute pulmonary oedema, asthma, and sleep apnoea syndrome; and produce the reduced trends in the risks of COPD and pulmonary hypertension. These findings will prompt further investigation on SGLT2 inhibitors for primary and secondary prevention of various respiratory disorders.