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1.
Diabetes Obes Metab ; 25(12): 3478-3489, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37749746

RESUMEN

AIM: Patient- and physician-associated barriers impact the effectiveness of basal insulin (BI) titration in the management of type 2 diabetes (T2D). We evaluated the experiences of patients with T2D and physicians with BI titration education. MATERIALS AND METHODS: In this observational, cross-sectional study, patients with T2D and physicians treating patients with T2D were identified by claims in the Optum Research Database and were invited to complete a survey. Eligible patients had 12 months of continuous health-plan enrolment with medical and pharmacy benefits during the baseline period, and recent initiation of BI therapy. Eligible physicians had initiated BI for ≥1 eligible patient with T2D during the past 6 months. RESULTS: In total, 416 patients and 386 physicians completed the survey. Ninety per cent of physicians reported treating ≥50 patients with T2D; 66% treated ≥25% of patients with BI. Whereas 74% of patients reported that BI titration was explained to them by a physician, 96% of physicians reported doing so. Furthermore, 20% of patients stated they were offered educational materials whereas 56% of physicians reported having provided materials. Physicians had higher expectations of glycaemic target achievement than were seen in the patient survey; their main concern was the patients' ability to titrate accurately (79%). CONCLUSIONS: There is a marked difference in patients' and physicians' experiences of BI titration education. Novel tools and strategies are required to enable effective BI titration, with more educational resources at the outset, and ongoing access to tools that provide clear, simple direction for self-titration with less reliance on physicians/health care providers.


Asunto(s)
Diabetes Mellitus Tipo 2 , Médicos , Humanos , Estudios Transversales , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Diabetes Mellitus Tipo 2/epidemiología , Hipoglucemiantes , Insulina , Estados Unidos/epidemiología
2.
Clin Diabetes ; 41(2): 258-272, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37092144

RESUMEN

This article reviews the efficacy and safety data of tirzepatide, a once-weekly, novel glucose-dependent insulinotropic polypeptide and glucagon-like peptide 1 (GLP-1) receptor agonist approved in the United States, the European Union, and other regions for the treatment of type 2 diabetes. All doses of tirzepatide demonstrated superiority in reducing A1C and body weight from baseline versus placebo or active comparators. The safety profile of tirzepatide was consistent with that of the GLP-1 receptor agonist class, with mild to moderate and transient gastrointestinal side effects being the most common adverse events. With clinically and statistically significant reductions in A1C and body weight without increased risk of hypoglycemia in various populations, tirzepatide has demonstrated potential as a first-in-class treatment option for many people with type 2 diabetes.

3.
Diabetes Spectr ; 33(2): 165-174, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32425454

RESUMEN

Long-term risks of macro- and microvascular complications may be reduced in people with type 2 diabetes who achieve early and sustained glycemic control. Delays in attaining A1C goals are associated with poor long-term cardiovascular (CV) outcomes. Glucagon-like peptide 1 (GLP-1) receptor agonists and sodium-glucose cotransporter 2 (SGLT2) inhibitors are glucose-lowering therapies that act through complementary mechanisms of action with regard to the pathophysiologic defects of type 2 diabetes. Trials of agents in both drug classes have demonstrated improvements in CV and renal outcomes. This review discusses the rationale for combination therapy with a GLP-1 receptor agonist and an SGLT2 inhibitor, including early initiation of this combination in newly diagnosed patients. This combination may lead to timely glycemic control and potentially additive CV and renal benefits. Clinical studies of the combination have shown partially additive effects on A1C reduction, additive effects on weight reduction, and potentially synergistic effects on blood pressure reduction. Long-term studies are needed to determine whether the combination provides an additional effect on CV and renal outcomes compared with agents from either drug class when used alone.

5.
Int J Colorectal Dis ; 33(1): 65-69, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29101452

RESUMEN

AIMS: Scottish Intercollegiate Guidelines Network (SIGN) guidelines require patients with colorectal cancer to wait no longer than 62 days from first referral to initiation of definitive treatment. We previously demonstrated that failure to meet with these guidelines did not appear to lead to poor outcomes in the short term. This study investigates whether this holds true over a longer period. METHODS: The survival status of 1,012 patients treated for colorectal cancer between January 1999 and June 2005 was reviewed. As in the previous audit, patients were placed into four groups, standard met (elective), standard met (emergency), standard failed (elective) and standard failed (emergency). Parameters analysed were pathological staging, 30-day mortality, long-term survival and cause of death. Data was analysed using log rank and chi-squared tests. RESULTS: Operative mortality was higher in patients meeting the standard (7% elective, 20% emergency) compared to those who did not meet the standard (4% elective, 7% emergency). The proportion of early stage disease (Dukes' A and B) was highest in elective patients who failed the standard (50%) and lowest in emergencies meeting the standard (30%). Long-term survival was greatest in elective patients who failed the standard with 52% alive in October 2011 compared to 34% of elective cases meeting the standard. The most common cause of recorded death was colorectal cancer in all groups. CONCLUSIONS: Patients who were not treated within the time frame set by the SIGN guidelines survived for longer following surgery. Reasons for this are likely to be multifactorial and include pathological cancer stage.


Asunto(s)
Neoplasias Colorrectales/mortalidad , Cooperación del Paciente , Adulto , Anciano , Anciano de 80 o más Años , Causas de Muerte , Humanos , Persona de Mediana Edad , Análisis de Supervivencia , Factores de Tiempo
6.
J Org Chem ; 80(24): 12137-45, 2015 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-26647642

RESUMEN

This paper describes the room-temperature S(N)Ar fluorination of aryl halides and nitroarenes using anhydrous tetramethylammonium fluoride (NMe4F). This reagent effectively converts aryl-X (X = Cl, Br, I, NO2, OTf) to aryl-F under mild conditions (often room temperature). Substrates for this reaction include electron-deficient heteroaromatics (22 examples) and arenes (5 examples). The relative rates of the reactions vary with X as well as with the structure of the substrate. However, in general, substrates bearing X = NO2 or Br react fastest. In all cases examined, the yields of these reactions are comparable to or better than those obtained with CsF at elevated temperatures (i.e., more traditional halex fluorination conditions). The reactions also afford comparable yields on scales ranging from 100 mg to 10 g. A cost analysis is presented, which shows that fluorination with NMe4F is generally more cost-effective than fluorination with CsF.

8.
JACC Heart Fail ; 12(6S): S10-S11, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38839135

RESUMEN

In this video, Javed Butler, MD, Jonathan Rich, MD, Rachel Pessah-Pollack, MD, and John E. Anderson, MD, summarize the key points of the enhanced publication "Role of SGLT2 Inhibitors in the Management of Heart Failure With and Without Type 2 Diabetes." The panel then delves deeper into some of the topics raised.


Asunto(s)
Diabetes Mellitus Tipo 2 , Insuficiencia Cardíaca , Inhibidores del Cotransportador de Sodio-Glucosa 2 , Humanos , Insuficiencia Cardíaca/tratamiento farmacológico , Inhibidores del Cotransportador de Sodio-Glucosa 2/uso terapéutico , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico
9.
Metabolism ; : 155931, 2024 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-38852020

RESUMEN

The spectrum of cardiorenal and metabolic diseases comprises many disorders, including obesity, type 2 diabetes (T2D), chronic kidney disease (CKD), atherosclerotic cardiovascular disease (ASCVD), heart failure (HF), dyslipidemias, hypertension, and associated comorbidities such as pulmonary diseases and metabolism dysfunction-associated steatotic liver disease and metabolism dysfunction-associated steatohepatitis (MASLD and MASH, respectively, formerly known as nonalcoholic fatty liver disease and nonalcoholic steatohepatitis [NAFLD and NASH]). Because cardiorenal and metabolic diseases share pathophysiologic pathways, two or more are often present in the same individual. Findings from recent outcome trials have demonstrated benefits of various treatments across a range of conditions, suggesting a need for practice recommendations that will guide clinicians to better manage complex conditions involving diabetes, cardiorenal, and/or metabolic (DCRM) diseases. To meet this need, we formed an international volunteer task force comprising leading cardiologists, nephrologists, endocrinologists, and primary care physicians to develop the DCRM 2.0 Practice Recommendations, an updated and expanded revision of a previously published multispecialty consensus on the comprehensive management of persons living with DCRM. The recommendations are presented as 22 separate graphics covering the essentials of management to improve general health, control cardiorenal risk factors, and manage cardiorenal and metabolic comorbidities, leading to improved patient outcomes.

10.
J Fam Pract ; 72(6 Suppl): S55-S60, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37549420

RESUMEN

KEY TAKEAWAYS: Stroke is a significant cause of mortality worldwide, and diabetes is an independent risk factor for ischemic stroke occurrence and recurrence. Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) lower the risk of ischemic stroke through beneficial effects on traditional stroke risk factors such as hyperglycemia, hypertension, and dyslipidemia. Primary care practitioners (PCPs) can play a substantial role in reducing ischemic stroke; studies have indicated that patients who have a PCP at the time of first stroke have a lower risk of stroke recurrence. Clinical practice guidelines recommend treating type 2 diabetes in patients with or at risk for cardiovascular (CV) disease with glucose-lowering agents with proven CV benefit, such as GLP-1 RAs and sodium-glucose cotransporter-2 (SGLT2) inhibitors. Based on meta-analyses of CV outcomes trials, GLP-1 RAs have a substantial and statistically significant benefit on ischemic stroke risk reduction, whereas SGLT2 inhibitors have a nonsignificant effect. The use of GLP-1 RAs, in addition to non-pharmacologic and pharmacologic management of traditional stroke risk factors, is a key component of complex therapy for ischemic stroke risk reduction.


Asunto(s)
Enfermedades Cardiovasculares , Diabetes Mellitus Tipo 2 , Receptor del Péptido 1 Similar al Glucagón , Accidente Cerebrovascular Isquémico , Humanos , Enfermedades Cardiovasculares/etiología , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Receptor del Péptido 1 Similar al Glucagón/agonistas , Hipoglucemiantes , Accidente Cerebrovascular Isquémico/complicaciones , Accidente Cerebrovascular Isquémico/tratamiento farmacológico
11.
Nephron Clin Pract ; 120(1): c8-16, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22156587

RESUMEN

BACKGROUND/AIMS: Abnormal serum potassium is associated with higher mortality in dialysis patients, but its impact on outcomes in predialysis chronic kidney disease (CKD) is less clear. Furthermore, blacks with normal kidney function have lower urinary potassium excretion, but it is unclear if such differences have a bearing on race-associated outcomes in CKD. METHODS: We studied predialysis mortality and slopes of estimated glomerular filtration rate, eGFR) associated with serum potassium in 1,227 males with CKD. Mortality was examined in time-dependent Cox models, and slopes of eGFR in linear mixed effects models with adjustments for case mix and laboratory values. RESULTS: Both hypo- and hyperkalemia were associated with mortality overall and in 933 white patients, but in 294 blacks hypokalemia was a stronger death predictor. Hypokalemia was associated with loss of kidney function independent of race: a 1 mEq/l lower potassium was associated with an adjusted difference in slopes of eGFR of -0.13 ml/min/1.73 m(2)/year (95% CI: -0.20 to -0.07), p < 0.001. CONCLUSION: Hypo- and hyperkalemia are associated with higher mortality in CKD patients. Blacks appear to better tolerate higher potassium than whites. Hypokalemia is associated with faster CKD progression independent of race. Hyperkalemia management may warrant race-specific consideration, and hypokalemia correction may slow CKD progression.


Asunto(s)
Población Negra , Hiperpotasemia/etiología , Hipopotasemia/etiología , Enfermedades Renales/sangre , Población Blanca , Anciano , Anciano de 80 o más Años , Presión Sanguínea , Índice de Masa Corporal , Enfermedad Crónica , Comorbilidad , Progresión de la Enfermedad , Humanos , Hiperpotasemia/epidemiología , Hipopotasemia/epidemiología , Enfermedades Renales/complicaciones , Enfermedades Renales/etnología , Enfermedades Renales/mortalidad , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Fumar/epidemiología , Virginia/epidemiología
12.
Matern Child Health J ; 16(4): 807-13, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-21516300

RESUMEN

The objectives of this study were to determine risk factors for early (less than 34 weeks gestation) and late (34-36 weeks gestation) preterm singleton birth, by assisted reproductive technology (ART) status. We linked data from Massachusetts birth records and ART records representing singleton live births from 1997 through 2004. Using multinomial regression models, we assessed risk factors for early and late preterm birth by ART status. From 1997 to 2004 in Massachusetts, among non-ART births, risk factors for early and late preterm birth were similar and included women <15 and ≥ 35 years of age, those of non-white race or Hispanic ethnicity, those with ≤ 12 years of education, those with chronic diabetes, those with gestational diabetes, those with gestational hypertension, those who smoked during pregnancy, those who used fertility medications, and those who had not had a previous live birth. Among ART births, risk factors for early and late preterm birth differed and odds of early preterm birth were increased among women with ≤ 12 years of education while odds of late preterm birth were increased among women with gestational diabetes. Odds of both early and late preterm birth were increased among women of non-white race or Hispanic ethnicity and among women with gestational hypertension. Among non-ART births, increased risk for preterm birth was more strongly related to socioeconomic factors than among ART births. Medical conditions were associated with an increased risk for preterm birth regardless of women's ART status. Efforts to prevent preterm births should focus on reducing modifiable risk factors.


Asunto(s)
Nacimiento Prematuro/epidemiología , Técnicas Reproductivas Asistidas , Adulto , Certificado de Nacimiento , Femenino , Edad Gestacional , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Modelos Logísticos , Massachusetts/epidemiología , Vigilancia de la Población , Embarazo , Complicaciones del Embarazo/epidemiología , Resultado del Embarazo , Técnicas Reproductivas Asistidas/efectos adversos , Técnicas Reproductivas Asistidas/estadística & datos numéricos , Factores de Riesgo , Factores Socioeconómicos , Adulto Joven
13.
Obes Sci Pract ; 8(3): 363-370, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35664250

RESUMEN

Long-term therapeutic benefit of treatments for weight management in patients with overweight (also termed preobesity) or obesity may be limited by variable safety, tolerability, and efficacy profiles, and patient adherence to treatment regimens. There is a medical need for nonsystemic treatments that promote weight loss in patients with overweight or early obesity. This report reviews four different approaches of utilizing superabsorbent hydrogel technology for weight management at varying stages of preclinical and clinical development. The first is a nonsystemic, oral superabsorbent hydrogel created from naturally derived building blocks used in foods (cellulose-based), designed to mix homogenously with and change the properties of the ingested meal throughout the gastrointestinal tract (stomach and small intestine). This is the first-in-class to be cleared by the Food and Drug Administration (FDA) to aid in weight-management for adults with BMI of 25-40 kg/m2 in conjunction with diet and exercise. In contrast, the other three approaches in development utilize superabsorbent hydrogel technologies to support an intragastric balloon-like structure, solely occupying space in the stomach and displacing the meal: (1) a pufferfish-inspired device; (2) Epitomee, a pH-sensitive self-expanding hydrogel device; and (3) a light-degradable hydrogel used to control balloon deflation. These new approaches that utilize superabsorbent hydrogel technology offer a wide range of clinical applicability and have the potential to broaden the weight management treatment landscape. Over time, increasing the number of patients treated with superabsorbent hydrogel technologies will provide important information on long-term efficacy and safety.

14.
J Diabetes Complications ; 36(2): 108101, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34922811

RESUMEN

Type 2 diabetes (T2D), chronic kidney disease (CKD), atherosclerotic cardiovascular disease (ASCVD), and heart failure (HF)-along with their associated risk factors-have overlapping etiologies, and two or more of these conditions frequently occur in the same patient. Many recent cardiovascular outcome trials (CVOTs) have demonstrated the benefits of agents originally developed to control T2D, ASCVD, or CKD risk factors, and these agents have transcended their primary indications to confer benefits across a range of conditions. This evolution in CVOT evidence calls for practice recommendations that are not constrained by a single discipline to help clinicians manage patients with complex conditions involving diabetes, cardiorenal, and/or metabolic (DCRM) diseases. The ultimate goal for these recommendations is to be comprehensive yet succinct and easy to follow by the nonexpert-whether a specialist or a primary care clinician. To meet this need, we formed a volunteer task force comprising leading cardiologists, nephrologists, endocrinologists, and primary care physicians to develop the DCRM Practice Recommendations, a multispecialty consensus on the comprehensive management of the patient with complicated metabolic disease. The task force recommendations are based on strong evidence and incorporate practical guidance that is clinically relevant and simple to implement, with the aim of improving outcomes in patients with DCRM. The recommendations are presented as 18 separate graphics covering lifestyle therapy, patient self-management education, technology for DCRM management, prediabetes, cognitive dysfunction, vaccinations, clinical tests, lipids, hypertension, anticoagulation and antiplatelet therapy, antihyperglycemic therapy, hypoglycemia, nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH), ASCVD, HF, CKD, and comorbid HF and CKD, as well as a graphical summary of medications used for DCRM.


Asunto(s)
Enfermedades Cardiovasculares , Sistema Cardiovascular , Diabetes Mellitus Tipo 2 , Insuficiencia Renal Crónica , Enfermedades Cardiovasculares/complicaciones , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/prevención & control , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/epidemiología , Diabetes Mellitus Tipo 2/terapia , Humanos , Hipoglucemiantes/uso terapéutico , Insuficiencia Renal Crónica/complicaciones , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/terapia
15.
Sex Transm Dis ; 38(10): 919-21, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-21934564

RESUMEN

The prevalence of condom use at last intercourse, estimated from questions added to a national survey, was estimated to be 20.2%. Use of condom was significantly higher for sex outside ongoing relationships and among those with 2 or more past-year sex partners and its use increased slightly but significantly from 1996 to 2008.


Asunto(s)
Condones/estadística & datos numéricos , Conducta Anticonceptiva/tendencias , Conducta Sexual/estadística & datos numéricos , Adolescente , Adulto , Condones/tendencias , Femenino , Infecciones por VIH/prevención & control , Encuestas Epidemiológicas , Humanos , Masculino , Estado Civil , Persona de Mediana Edad , Factores de Riesgo , Parejas Sexuales/clasificación , Enfermedades de Transmisión Sexual/prevención & control , Estados Unidos , Adulto Joven
16.
J Fluoresc ; 21(1): 119-24, 2011 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-20607370

RESUMEN

Nanoporous silica gel was employed to extract uranyl from contaminated soil and to enhance the fluorescence intensity and lifetime. The fluorescence lifetime and intensity of uranyl ions absorbed within nanoporous silica gel was measured from pH 1-13. The results show that the uranyl fluorescence intensity can be enhanced by approximately two orders of magnitude by the silica nanoporous matrix from pH 4-12 with the greatest enhancement occurring from pH 4-7. The enhanced fluorescence lifetime can be used in time-gated measurements to help minimize the influence of background environmental fluorophores.

17.
Diabetes Technol Ther ; 23(S3): S45-S55, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34160300

RESUMEN

Recent studies have demonstrated the clinical utility of continuous glucose monitoring (CGM) use in type 2 diabetes (T2D) patients who are treated with intensive insulin management. Large retrospective database analyses of T2D patients treated with less-intensive therapies have also shown that CGM use was associated with significant reductions in hemoglobin A1c levels and health resource utilization, including diabetes-related hospitalizations and emergency room care. Despite the growing body of evidence supporting CGM use in the broader T2D population, current eligibility criteria required by public and many private insurers are denying millions of individuals with T2D access to this valuable technology. In this article, we discuss an evidence-based rationale for modifying current eligibility requirements for CGM coverage.


Asunto(s)
Automonitorización de la Glucosa Sanguínea , Diabetes Mellitus Tipo 2 , Glucemia/análisis , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Humanos , Cobertura del Seguro , Estudios Retrospectivos , Recompensa
18.
Stem Cell Investig ; 8: 2, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33575315

RESUMEN

BACKGROUND: Ischemic cardiomyopathy (ICM) is a leading cause of cardiovascular mortality worldwide. It is defined as abnormal enlargement of the left ventricular (LV) cavity with poor LV function due to coronary artery disease. Currently available established treatments are palliative whereby blood supply is recovered to ischemic regions but fails to regenerate heart tissues. Mesenchymal stem cells (MSCs) offer a promising treatment for ICM given their regenerative and multipotent characteristics. This study aims to investigate the effect of MSCs infusion with concurrent revascularization in patients with severe ICM compared to receiving only revascularization procedure or MSCs infusion. METHODS: Twenty-seven patients with history of anterior myocardial infarction (MI) and baseline left ventricular ejection fraction (LVEF) of less than 35% were recruited into this study. Patients who are eligible for revascularization were grouped into group A (MSCs infusion with concurrent revascularization) or group B (revascularization only) while patients who were not eligible for revascularization were allocated in group C to receive intracoronary MSCs infusion. LV function was measured using echocardiography. RESULTS: Patients who received MSCs infusion (either with or without revascularization) demonstrated significant LVEF improvements at 3, 6 and 12 months post-infusion when compared to baseline LVEF within its own group. When comparing the groups, the magnitude of change in LVEF from baseline for third visits i.e., 12 months post-infusion was significant for patients who received MSCs infusion plus concurrent revascularization in comparison to patients who only had the revascularization procedure. CONCLUSIONS: MSCs infusion significantly improves LV function in ICM patients. MSCs infusion plus concurrent revascularization procedure worked synergistically to improve cardiac function in patients with severe ICM.

19.
Postgrad Med ; 132(4): 305-313, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32223687

RESUMEN

Use of continuous glucose monitoring (CGM) improves clinical outcomes in type 1 diabetes, and significant benefits been demonstrated in patients with type 2 diabetes, including improved glycemic control, better treatment adherence, and an increased understanding of their treatment regimens. Currently, there are two types of CGM systems: real-time CGM (rtCGM) and flash CGM (FCGM). Retrospective analysis of CGM data allows patients and their clinicians to identify glycemic patterns that support and facilitate informed therapy decisions. With the increasing prevalence of diabetes, primary care physicians will be compelled to take on more responsibility for managing patients with diabetes. This article focuses on practical approaches and decision-making strategies for utilizing FCGM in primary care settings.


Asunto(s)
Automonitorización de la Glucosa Sanguínea/instrumentación , Diabetes Mellitus/sangre , Atención Primaria de Salud/organización & administración , Dispositivos Electrónicos Vestibles , Factores de Edad , Toma de Decisiones , Humanos , Estudios Longitudinales , Prioridad del Paciente , Estudios Retrospectivos
20.
JAMA Oncol ; 6(4): 495-503, 2020 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-32027343

RESUMEN

Importance: Per the World Health Organization 2016 integrative classification, newly diagnosed glioblastomas are separated into isocitrate dehydrogenase gene 1 or 2 (IDH)-wild-type and IDH-mutant subtypes, with median patient survival of 1.2 and 3.6 years, respectively. Although maximal resection of contrast-enhanced (CE) tumor is associated with longer survival, the prognostic importance of maximal resection within molecular subgroups and the potential importance of resection of non-contrast-enhanced (NCE) disease is poorly understood. Objective: To assess the association of resection of CE and NCE tumors in conjunction with molecular and clinical information to develop a new road map for cytoreductive surgery. Design, Setting, and Participants: This retrospective, multicenter cohort study included a development cohort from the University of California, San Francisco (761 patients diagnosed from January 1, 1997, through December 31, 2017, with 9.6 years of follow-up) and validation cohorts from the Mayo Clinic (107 patients diagnosed from January 1, 2004, through December 31, 2014, with 5.7 years of follow-up) and the Ohio Brain Tumor Study (99 patients with data collected from January 1, 2008, through December 31, 2011, with a median follow-up of 10.9 months). Image accessors were blinded to patient groupings. Eligible patients underwent surgical resection for newly diagnosed glioblastoma and had available survival, molecular, and clinical data and preoperative and postoperative magnetic resonance images. Data were analyzed from November 15, 2018, to March 15, 2019. Main Outcomes and Measures: Overall survival. Results: Among the 761 patients included in the development cohort (468 [61.5%] men; median age, 60 [interquartile range, 51.6-67.7] years), younger patients with IDH-wild-type tumors and aggressive resection of CE and NCE tumors had survival similar to that of patients with IDH-mutant tumors (median overall survival [OS], 37.3 [95% CI, 31.6-70.7] months). Younger patients with IDH-wild-type tumors and reduction of CE tumor but residual NCE tumors fared worse (median OS, 16.5 [95% CI, 14.7-18.3] months). Older patients with IDH-wild-type tumors benefited from reduction of CE tumor (median OS, 12.4 [95% CI, 11.4-14.0] months). The results were validated in the 2 external cohorts. The association between aggressive CE and NCE in patients with IDH-wild-type tumors was not attenuated by the methylation status of the promoter region of the DNA repair enzyme O6-methylguanine-DNA methyltransferase. Conclusions and Relevance: This study confirms an association between maximal resection of CE tumor and OS in patients with glioblastoma across all subgroups. In addition, maximal resection of NCE tumor was associated with longer OS in younger patients, regardless of IDH status, and among patients with IDH-wild-type glioblastoma regardless of the methylation status of the promoter region of the DNA repair enzyme O6-methylguanine-DNA methyltransferase. These conclusions may help reassess surgical strategies for individual patients with newly diagnosed glioblastoma.


Asunto(s)
Glioblastoma/tratamiento farmacológico , Glioblastoma/cirugía , Isocitrato Deshidrogenasa/genética , Adolescente , Adulto , Anciano , Antineoplásicos Alquilantes/administración & dosificación , Biomarcadores de Tumor/genética , Preescolar , Estudios de Cohortes , Medios de Contraste/administración & dosificación , Metilación de ADN/efectos de los fármacos , Femenino , Glioblastoma/genética , Glioblastoma/patología , Humanos , Isocitrato Deshidrogenasa/administración & dosificación , Masculino , Persona de Mediana Edad , Ohio/epidemiología , Pronóstico , Regiones Promotoras Genéticas/efectos de los fármacos , Estudios Retrospectivos , Temozolomida/administración & dosificación
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