Effect of SGLT2 inhibitors on anemia and their possible clinical implications.

Sodium-glucose cotransporter 2 inhibitors (SGLT2i) have demonstrated cardiovascular and renal benefits in patients with type 2 diabetes mellitus, heart failure, or chronic kidney disease. Since the first studies with these drugs, an initial increase in hemoglobin/hematocrit levels was observed, which was attributed to an increase in hemoconcentration associated with its diuretic effect, although it was early appearent that these drugs increased erythropoietin levels and erythropoiesis, and improved iron metabolism. Mediation studies found that the increase in hemoglobin was strongly associated with the cardiorenal benefits of these drugs. In this review, we discuss the mechanisms for improving erythropoiesis and the implication of the increase in hemoglobin on the cardiorenal prognostic benefit of these drugs.

Sodium-glucose cotransporter 2 inhibitors as the first universal treatment of chronic kidney disease.

In the last five years, the medical community was astonishingly surprised by the sequential large outcome trials that displayed the renal effects of sodium glucose co-transporter inhibitors (SGLT2Is) in type 2 diabetes mellitus (T2DM) patients with or without chronic kidney disease (CKD). This favorable effect was later disclosed in non-diabetic CKD patients. The EMPA-REG OUTCOME trial was the first trial that showed a reduction for the need for dialysis in patients suffering diabetic kidney disease (DKD) by 55%. This figure is double the score achieved by the angiotensin receptor blocker, Losartan, in RENAAL trial. The need for dialysis in DAPA-CKD trial was reduced in diabetic and non-diabetic CKD patients by 33%. The renal-specific composite outcome was reduced by 39% in EMPA-REG trial, 40% in CANVAS study, 47% in DECLARE-TIMI 58 study, 34% in CREDENCE trial, and 44% in DAPA-CKD trial. The greater surprise is the significant favorable effect of SGLT2Is on overall mortality in CKD patients with or without T2DM. Similar survival benefit was not previously encountered with any of the medications used in CKD patients with or without diabetes. In this review, we disclose the results of the DAPA-CKD trial, the CREDENCE trial and those of several cardiovascular outcome trials (CVOT) that used different SGLT2Is and showed that patients with lower eGFR levels may have greater benefit with respect to cardiovascular morbidity than patients with normal kidney function. In addition, we discuss the different mechanisms of action that explain the renal beneficial effects of SGLT2Is.

Sodium-glucose cotransporter 2 inhibitors as the first universal treatment of chronic kidney disease.

In the last five years, the medical community was astonishingly surprised by the sequential large outcome trials that displayed the renal effects of sodium glucose co-transporter inhibitors (SGLT2Is) in type 2 diabetes mellitus (T2DM) patients with or without chronic kidney disease (CKD). This favorable effect was later disclosed in non-diabetic CKD patients. The EMPA-REG OUTCOME trial was the first trial that showed a reduction for the need for dialysis in patients suffering diabetic kidney disease (DKD) by 55%. This figure is double the score achieved by the angiotensin receptor blocker, Losartan, in RENAAL trial. The need for dialysis in DAPA-CKD trial was reduced in diabetic and non-diabetic CKD patients by 33%. The renal-specific composite outcome was reduced by 39% in EMPA-REG trial, 40% in CANVAS study, 47% in DECLARE-TIMI 58 study, 34% in CREDENCE trial, and 44% in DAPA-CKD trial. The greater surprise is the significant favorable effect of SGLT2Is on overall mortality in CKD patients with or without T2DM. Similar survival benefit was not previously encountered with any of the medications used in CKD patients with or without diabetes. In this review, we disclose the results of the DAPA-CKD trial, the CREDENCE trial and those of several cardiovascular outcome trials (CVOT) that used different SGLT2Is and showed that patients with lower eGFR levels may have greater benefit with respect to cardiovascular morbidity than patients with normal kidney function. In addition, we discuss the different mechanisms of action that explain the renal beneficial effects of SGLT2Is.

Efecto de los inhibidores del cotransportador sodio-glucosa tipo 2 sobre la anemia: posibles implicaciones clínicas / Effect of SGLT2 inhibitors on anemia and their possible clinical implications

Los inhibidores del cotransportador sodio-glucosa tipo 2 (iSGLT2) han demostrado su beneficio cardiovascular y renal en pacientes con diabetes mellitus tipo 2, insuficiencia cardiaca (IC) o enfermedad renal crónica (ERC). Desde los primeros estudios, con estos fármacos se objetivó un incremento inicial de los niveles de hemoglobina/hematocrito que se atribuyó a un aumento de la hemoconcentración asociados a su efecto diurético, aunque pronto se constató que aumentaban los niveles de eritropoyetina (EPO) y eritropoyesis, mejorando el metabolismo férrico. Los estudios de mediación objetivaron que el incremento de hemoglobina se asociaba estrechamente con los beneficios cardiorrenales de estas sustancias. En la presente revisión se discuten los mecanismos de mejora de la eritropoyesis y la implicación del aumento de hemoglobina sobre el beneficio pronóstico cardiorrenal de estos medicamentos.(AU)

Sodium-glucose cotransporter 2 inhibitors (SGLT2i) have demonstrated cardiovascular and renal benefits in patients with type 2 diabetes mellitus, heart failure, or chronic kidney disease. Since the first studies with these drugs, an initial increase in hemoglobin/hematocrit levels was observed, which was attributed to an increase in hemoconcentration associated with its diuretic effect, although it was soon seen that these drugs increased erythropoietin levels and erythropoiesis, and improved iron metabolism. Mediation studies found that the increase in hemoglobin was strongly associated with the cardiorenal benefits of these drugs. In this review, we discuss the mechanisms for improving erythropoiesis and the implication of the increase in hemoglobin on the cardiorenal prognostic benefit of these drugs.(AU)

Sodium-glucose cotransporter 2 inhibitors as the first universal treatment of chronic kidney disease / Los inhibidores del cotransportador de sodio y glucosa de tipo 2 como primer tratamiento universal de la enfermedad renal crónica

In the last five years, the medical community was astonishingly surprised by the sequential large outcome trials that displayed the renal effects of sodium glucose co-transporter inhibitors (SGLT2Is) in type 2 diabetes mellitus (T2DM) patients with or without chronic kidney disease (CKD). This favorable effect was later disclosed in non-diabetic CKD patients. The EMPA-REG OUTCOME trial was the first trial that showed a reduction for the need for dialysis in patients suffering diabetic kidney disease (DKD) by 55%. This figure is double the score achieved by the angiotensin receptor blocker, Losartan, in RENAAL trial. The need for dialysis in DAPA-CKD trial was reduced in diabetic and non-diabetic CKD patients by 33%. The renal-specific composite outcome was reduced by 39% in EMPA-REG trial, 40% in CANVAS study, 47% in DECLARE-TIMI 58 study, 34% in CREDENCE trial, and 44% in DAPA-CKD trial. The greater surprise is the significant favorable effect of SGLT2Is on overall mortality in CKD patients with or without T2DM. Similar survival benefit was not previously encountered with any of the medications used in CKD patients with or without diabetes. In this review, we disclose the results of the DAPA-CKD trial, the CREDENCE trial and those of several cardiovascular outcome trials (CVOT) that used different SGLT2Is and showed that patients with lower eGFR levels may have greater benefit with respect to cardiovascular morbidity than patients with normal kidney function. In addition, we discuss the different mechanisms of action that explain the renal beneficial effects of SGLT2Is. (AU)

Durante los últimos cinco años la comunidad médica se ha visto sorprendida por los grandes ensayos de resultados secuenciales que mostraron los efectos renales de los inhibidores del cotransportador de sodio y glucosa (SGLT2I) en pacientes con diabetes mellitus de tipo 2 (DMT2), con o sin enfermedad renal crónica (ERC). Este efecto favorable se descubrió posteriormente en pacientes no diabéticos con ERC. El ensayo EMPA-REG OUTCOME fue el primero que mostró una disminución del 55% de la necesidad de diálisis en pacientes con enfermedad renal diabética (ERD). Esta cifra duplica la puntuación obtenida por el antagonista de los receptores de la angiotensina (losartán) en el ensayo RENAAL. La necesidad de diálisis en el ensayo DAPA-CKD se redujo en un 33% en los pacientes con ERC diabéticos y no diabéticos. El criterio de valoración compuesto específico renal se redujo en un 39% en el ensayo EMPA-REG, un 40% en el estudio CANVAS, un 47% en el estudio DECLARE-TIMI 58, un 34% en el ensayo CREDENCE y un 44% en el ensayo DAPA-CKD. La mayor sorpresa es el significativo efecto favorable de los SGLT2I en la mortalidad global de los pacientes con ERC con o sin DMT2. No se había encontrado con anterioridad un beneficio de supervivencia similar con ninguno de los medicamentos utilizados en pacientes con ERC diabéticos y no diabéticos. En esta revisión presentamos los resultados del ensayo DAPA-CKD, el ensayo CREDENCE y varios ensayos de resultados cardiovasculares (CVOT) que utilizaron diferentes SGLT2I y mostraron que los pacientes con niveles más bajos de tasa de filtración glomerular estimada (TFGe) pueden gozar de un mayor beneficio con respecto a la morbilidad cardiovascular que los pacientes con función renal normal. Además, se abordan los diferentes mecanismos de acción que explican los efectos renales beneficiosos de los SGLT2I. (AU)

Impact of SGLT2 inhibitors on renal function in elderly with type 2 diabetes in the firstyear of treatment / Impacto de los inhibidores de SGLT2 sobre la función renal en ancianos con diabetes tipo 2 durante el primer año de tratamiento

Objectives: This study aims to evaluate the effect of iSGLT2 on estimated glomerular filtration rate (eGFR) and albuminuria in elderly patients during the first year of treatment.Methods and Methodologies: Retrospective cohort study includingelderly patients (>65 years) with type 2 diabetes (T2D) treated withiSGLT2. Data were collected at the beginning of treatment, 3, 6, 9 and12 months after.Results: A total of 115 elderly patients were included, 48.7% male,mean age 72.4±5.2 years, median HbA1c 8.4±1.7% and medianT2D duration of 17±12 years. Dapagliflozin was initiated in 60.9%and empagliflozin in 39.1%. An eGFR of 30-60mL/min/1.73m2 wasobserved in 21.7%, with moderately increased albuminuria in 12.2%and severely increased albuminuria in 4.3%.Throughout the first year, there was a significant reduction in HbA1c(-0.32%±1,6%; p<0.038). Regarding eGFR, no significant differences at the beginning of treatment or after 1-year were observed,nonetheless, a non-significant reduction was observed in the firstsemester, followed by a significant increase in eGFR (71.4-84.9mL/min/1.73m2; p<0.006) in the second semester. As to the variation ofeGFR yearlong, there were no significant differences between dapagliflozin and empagliflozin, although in the first semester, empagliflozinpresented a greater variation in eGFR(p=0.021). There was no significant reduction in albuminuria(p=0,074).Conclusions: In our sample, iSGLT2 seems to preserve the glycemiceffects, without worsening renal function in an elderly population during the first-year treatment. It seems that the nephroprotective effectis also preserved in the elderly in real life. (AU)

Objetivos: Evaluar el efecto de iSGLT2 sobre la tasa de filtraciónglomerular estimada (TFGe) y la albuminuria en ancianos durante elprimer año de tratamiento.Métodos: Estudio coorte retrospectivo que incluyó a pacientes ancianos (>65 años) con diabetes tipo 2(DM2) tratados con iSGLT2.Los datos se recogieron al inicio del tratamiento, 3, 6, 9 y 12 mesesdespués.Resultados: Se incluyeron 115 ancianos, 48,7% varones, edad media 72,4±5,2 años, mediana de HbA1c 8,4±1,7% y de duración dela DM2 de 17±12 años. Se inició dapagliflozina en 60,9% y empagliflozina en 39,1%.Se observó una TFGe de 30-60 ml/min/1,73m2 en 21,7%, con unaumento moderado de la albuminuria en 12,2% y un aumento gravede la albuminuria en 4,3%.Durante el primer año, hubo una reducción significativa de la HbA1c(-0,32%±1,6%; p<0,038). En la TFGe no se observaron diferenciassignificativas al inicio del tratamiento ni al año, sin embargo, se observó una reducción no significativa en el primer semestre, seguida deun aumento significativo (71,4-84,9ml/min/1,73m2; p<0,006) en elsegundo semestre. La variación de la TFGe a lo largo del año no presentó diferencias significativas entre dapagliflozina y empagliflozina,aunque en el primer semestre la empagliflozina presentó una mayorvariación (p=0,021). No se ha demostrado una reducción significativade la albuminuria (p=0,074).Conclusiones: En nuestra muestra, iSGLT2 parece preservar losefectos glucémicos, sin empeorar la función renal en una poblaciónanciana durante el primer año de tratamiento. Por tanto, parece mantenerse el efecto nefroprotector en mayores de 65 años en vida real. (AU)

Infecciones urinarias asociadas al uso de ISGLT-2 / Urinary infections associated with the use of ISGLT-2

La reacción adversa más frecuentemente asociada al tratamiento con inhibidores del cotransportador sodio-glucosa es la infección micótica genital y en menor proporción la infección urinaria, esto no es dosis dependiente. Es más común en mujeres y en hombres antes de los 50 años de edad. Es infrecuente la necesidad de suspender el tratamiento por estas infecciones. Se recomienda evitar el uso en pacientes con historia de infecciones urinarias recurrentes o con episodio reciente de infección urinaria alta y especial cuidado al indicarla en aquellos con historia de hipertrofia prostática porque se han descripto casos de pielonefritis

The most frequent adverse reaction associated with sodiumglucose cotransporter inhibitors therapy is genital mycotic infection, and to a lesser extent urinary infection, this is not dose-dependent. It is more common in women and men before turning 50 years old. The need to interrupt treatment for these infections is rare. It is recommended to avoid the use in patients with a history of recurrent urinary infections or with a recent episode of upper urinary tract infection and special care when indicating it to patients with a history of prostatic hypertrophy since pyelonephritis cases have been described

[Contributions of SGLT-2 and new drugs under investigation]. / Aportaciones de los SGLT-2 y nuevos fármacos en investigación.

DeFronzo spoke of the "ominous octet", in which he referred to the existence of distinct pathways and organs related to the physiopathology of type 2 diabetes mellitus (DM2). One of these key organs is the kidney, which plays an important role in regulating glucose metabolism through gluconeogenesis and through glomerular filtration and glucose reabsorption in the proximal convoluted tubules. Approximately 180 g of glucose are filtered to the renal tubule from the blood stream through the glomerulus. The filtrate is subsequently reabsorbed from the tubules to the peritubular capillaries through the action of sodium glucose cotransporters (SGLT). There are 2 main cotransporters in the kidney, SGLT1 and SGLT2, which reabsorb the glucose (10% and 90%, respectively) and return it to the blood. In persons with DM2, SGLT2 is increased, leading to greater renal absorption of glucose, which has adverse effects as it contributes to the maintenance of hyperglycemia. Selective pharmacological SGLT2 inhibition increases renal glucose excretion and secondarily reduces its plasma values. SGLT2 inhibitors act exclusively on the kidney, reduce glycosylated hemoglobin (HbA1c) by about 0.66%, decrease blood pressure, and induce a weight loss of approximately 1.8 kg. These drugs have a low risk of hypoglycemia but carry an increased risk of genitourinary infections. Several clinical trials have shown that dapagliflozin (10mg/day), the first SGLT2 inhibitor commercialized in Spain, produces a statistically significant reduction in HbA1c of 0.82-0.97%, both in monotherapy and in combination with metformin, glimepiride, pioglitazone, or insulin. Its use produces a weight loss of between 2 and 3 kg and reduces both systolic and diastolic blood pressure, while the risk of hypoglycemias is low.

[Dapagliflozin, the first SGLT-2 inhibitor in the treatment of type 2 diabetes]. / Dapagliflozina, el primer inhibidor SGLT 2 en el tratamiento de la diabetes tipo 2.

Dapagliflozin is the first novel sodium-glucose co-transporter-2 (SGLT2) inhibitor approved by the European Medicines Agency (EMA) for the treatment of type 2 diabetes. By inhibiting SGLT2, dapagliflozin blocks reabsorption of filtered glucose in the kidney, increasing urinary glucose excretion and reducing blood glucose levels. Its mechanism of action is independent of pancreatic ß cell function and modulation of insulin sensitivity. The results of phase III clinical trials showed that dapagliflozin, at a dose of 5 or 10mg/day for 24 weeks as monotherapy in previously untreated patients, or as add-on combination therapy with metformin, glimepiride, pioglitazone or insulin-based therapy, significantly reduced both HbA1c and fasting plasma glucose levels compared with placebo. In addition, dapagliflozin was noninferior to glipizide, in terms of glycemic control after 52 weeks, when used as add-on therapy in patients with type 2 diabetes inadequately controlled with metformin. In most clinical trials, dapagliflozin reduced body weight. The combination of both effects (improved glycemic control and weight loss) is achieved to a greater extent in treatments that include dapaglifozin. Longer-term extension studies indicated that the efficacy of dapagliflozin on the glycemic control and weight reducción is maintained for up to 2 and 4 years. Dapagliflozin was well tolerated. Genital infections and urinary tract infections were more frequent in patients who received dapagliflozin than in placebo recipients. Hypoglycemic episodes were scarce with dapagliflozin. In conclusion, dapagliflozin is a novel option for the management of type 2 diabetes, particularly when used as add-on therapy.

iSGLT2 y su potencial efecto nefroprotector en pacientes con diabetes mellitus 2 / iSGLT2 and its potential nephroprotector effect in patients with diabetes mellitus 2

Resumen: La diabetes mellitus 2 es una epidemia mundial, aunado a esto, la nefropatía diabética se ha convertido en la principal causa de insuficiencia renal en etapa terminal. En los pacientes con diabetes mellitus 2 existe sobreexpresión de los cotransportadores de glucosa ligados a la vía del sodio tipo 2 (SGLT2) que contribuyen al mantenimiento de la hiperglucemia. Por tanto, los inhibidores de este transportador representan un tratamiento innovador independiente de la acción de la insulina o la función de las células beta pancreáticas. En estudios recientes se ha demostrado que los iSGLT2 tienen efectos benéficos en la microvasculatura, en especial en la progresión de la nefropatía diabética. Este efecto no sólo se debe a la mejora del control glucémico, sino también a efectos directos en el riñón. Los iSGLT2, al inducir la glucosuria, revierten la glucotoxicidad renal. En estudios experimentales se ha observado que, además, se reduce la hiperfiltración, así como los marcadores inflamatorios y fibróticos. También se ha visto reducción del volumen circulante efectivo y aumento en la actividad de bloqueadores del sistema renina-angiotensina-aldosterona (bloqueadores RAA) circulantes, creando así un efecto nefroprotector.

Abstract: Type 2 diabetes mellitus 2 (DM2) is already a worldwide epidemic, in addition, diabetic nephropathy has become the leading cause of end-stage renal failure. In patients with DM2 there is an increased expression of the sodium-glucose cotransporters 2 (SGLT2) that contribute to the maintenance of hyperglycemia. Therefore, the inhibitors of this transporter represent an innovative therapy independent of the action of insulin or the function of pancreatic beta cells. Recent studies have shown that iSGLT2 have beneficial effects on microvasculature, especially in the progression of diabetic nephropathy. This effect is due not only to improved glycemic control but also to direct effects on the kidney. iSGLT2 induce glycosuria to reverse renal glucotoxicity. In experimental studies it has been observed that, in addition, hyper-filtration as well as inflammatory and fibrotic markers are reduced. There has also been a reduction in effective circulating volume and an increase in the activity of circulating renin-angiotensin-aldosterone system blockers (RAA blockers), thus creating a nephroprotective effect.