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1.
Diabetes Ther ; 15(5): 1201-1214, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38573466

RESUMO

INTRODUCTION: This study aimed to compare weight loss and glycated hemoglobin (HbA1c)-reduction effects of two obesity-centric, weight-loss management approaches (with or without anti-obesity medication) versus usual glucose-centric care in patients with obesity and type 2 diabetes. METHODS: Single-center, randomized, open-label, 3-armed, parallel-group, pragmatic, noninferiority trial, July 2020 to August 2022. Adults enrolled in the Cleveland Clinic Employee Health Plan (body mass index [BMI] ≥ 30 kg/m2, type 2 diabetes diagnosis, HbA1c > 7.5%) were randomized to usual glucose-centric management ("Usual-Care" group) or one of two obesity-centric management strategies: participation in a weight management program plus anti-obesity medication ("WMP + AOM" group), or WMP participation without anti-obesity medication ("WMP-Only" group). Primary endpoints were changes in weight and HbA1c, baseline to month 12. RESULTS: Due to enrollment and retention challenges, largely related to COVID-19, only 74/300 planned participants were randomized and the study was terminated early. Participants were predominantly female (59%), median (interquartile range [IQR]) age 53.5 (47, 60) years, 68% white, with baseline median (IQR) BMI and HbA1c of 37.4 (34.2, 42.7) kg/m2 and 8.8% (7.9%, 10.4%), respectively. At month 12, mean (90% confidence interval [CI]) percentage weight change in the Usual-Care, WMP-Only, and WMP + AOM groups was - 4.5% (- 6.5%, - 2.5%), - 6.7% (- 8.7%, - 4.7%), and - 8.7% (- 10.7%, - 6.8%), respectively; mean (90% CI) HbA1c change was - 1.7% (- 2.1%, - 1.2%), - 2.2% (- 2.7%, - 1.8%), and - 2.2% (- 2.6%, - 1.7%), respectively. WMP + AOM was superior to Usual-Care for weight change (P = 0.02); both WMP + AOM and WMP-Only were noninferior (P ≤ 0.01) to Usual-Care for change in HbA1c. CONCLUSIONS: Including anti-obesity medication was associated with superior weight loss with noninferior HbA1c reductions, warranting further evaluation in larger study populations of obesity-focused approaches to type 2 diabetes management. Graphical abstract available for this article. TRIAL REGISTRATION: ClinicalTrials.gov NCT03799198.

2.
Methodist Debakey Cardiovasc J ; 20(2): 128-131, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38495655

RESUMO

Why does anyone write poetry? Lisel Mueller (1924-2020) was a poet, author, and translator with a long and much-decorated career. She and her family fled Nazi Germany in the 1930s and emigrated to the United States, where she would establish herself as a writer. The poem "When I Am Asked" describes the beginning of her journey into poetry, undertaken during a period of grief after the death of her mother. Her writing would come to include nine collections of poetry and myriad accolades, including the 1981 National Book Award and the 1997 Pulitzer Prize for Poetry. Though her ouvre is filled with evocative works, this piece stands out as particularly relevant to physicians and other writers who find solace by expressing themselves through the art of poetry.


Assuntos
Médicos , Feminino , Humanos , Estados Unidos , Redação
3.
Angew Chem Int Ed Engl ; : e202403026, 2024 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-38416815

RESUMO

We demonstrate that electrochemical-induced decarboxylation enables reliable post-polymerization modification and degradation of polymers. Polymers containing N-(acryloxy)phthalimides were subjected to electrochemical decarboxylation under mild conditions, which led to the formation of transient alkyl radicals. By installing these redox-active units, we systematically modified the pendent groups and chain ends of polyacrylates. This approach enabled the production of poly(ethylene-co-methyl acrylate) and poly(propylene-co-methyl acrylate) copolymers, which are difficult to synthesize by direct polymerization. Spectroscopic and chromatographic techniques reveal these transformations are near-quantitative on several polymer systems. Electrochemical decarboxylation also enables the degradation of all-methacrylate poly(N-(methacryloxy)phthalimide-co-methyl methacrylate) copolymers with a degradation efficiency of >95 %. Chain cleavage is achieved through the decarboxylation of the N-hydroxyphthalimide ester and subsequent ß-scission of the backbone radical. Electrochemistry is thus shown to be a powerful tool in selective polymer transformations and controlled macromolecular degradation.

4.
J Am Chem Soc ; 146(9): 6217-6224, 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38382047

RESUMO

In this study, we present an efficient approach for the depolymerization of poly(methyl methacrylate) (PMMA) copolymers synthesized via conventional radical polymerization. By incorporating low mol % phthalimide ester-containing monomers during the polymerization process, colorless and transparent polymers closely resembling unfunctionalized PMMA are obtained, which can achieve >95% reversion to methyl methacrylate (MMA). Notably, our catalyst-free bulk depolymerization method exhibits exceptional efficiency, even for high-molecular-weight polymers, including ultrahigh-molecular-weight (106-107 g/mol) PMMA, where near-quantitative depolymerization is achieved. Moreover, this approach yields polymer byproducts of significantly lower molecular weight, distinguishing it from bulk depolymerization methods initiated from chain ends. Furthermore, we extend our investigation to polymethacrylate networks, demonstrating high extents of depolymerization. This innovative depolymerization strategy offers promising opportunities for the development of sustainable polymethacrylate materials, holding great potential for various applications in polymer science.

5.
Methodist Debakey Cardiovasc J ; 19(4): 104-106, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37547890

RESUMO

Truman Capote (1924-1984) was a fascinating, entertaining, and much ballyhooed American character who came of age in the mid-Twentieth Century. Some would say he led a tragic life. Often described as a notable novelist, he was more generally a polymath dabbling in nonfiction between his parties. He also was a screenwriter, playwright, actor, and short-story writer. His literary classics include the novella Breakfast at Tiffany's (1958, movie 1961) and true crime nonfiction "novel" (as Capote described it) In Cold Blood (1965, movie 1967). These two efforts became his most famous. But what about his poetry? Was this one of his creative passions?


Assuntos
Pessoas Famosas , Masculino , Humanos , História do Século XX , História do Século XIX , Emoções
6.
Methodist Debakey Cardiovasc J ; 19(3): 111-113, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37213884

RESUMO

The Christina Rossetti poem "Up-Hill" (1862) is an exemplary poem of the Victorian era by one of the rare female poets of the time, including Emily Brontë, Elizabeth Browning, Katherine Tynan, and Alice Meynell. Rossetti, typical of the era and the Victorian genre, wrote allegories about faith and love. She came from a distinguished literary family. "Up-Hill" was one of her better-known works.


Assuntos
Amor , Redação , Humanos , Feminino , Masculino
7.
Methodist Debakey Cardiovasc J ; 19(2): 103-106, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36910547

RESUMO

Dr. Oliver Wendell Holmes Sr. was a 19th century elite physician, curmudgeon, essayist, and poet. His works were numerous, insightful, entertaining, and characteristic of the pre-Civil War, Civil War, and Gilded age eras. Many of his shorter poems are taught in high school as examples of late 19th century works, as they are relatively easy to memorize and understand. Holmes and the Fireside Poets (Emerson, Longfellow, and Lowell, among others) created works that, in their time, were read aloud by fathers and mothers to their family because the poems often centered around values, morals, and historic events. "Old Ironsides" is characteristic of the type of work for which the Fireside Poets became famous. It is an entertaining poem to read, study, and hear, particularly when linking it to the oldest ship in the world, still afloat and sailing around Boston Bay.

8.
ACS Macro Lett ; 11(12): 1390-1395, 2022 12 20.
Artigo em Inglês | MEDLINE | ID: mdl-36469937

RESUMO

Controlled radical polymerization techniques enable the synthesis of polymers with predetermined molecular weights, narrow molecular weight distributions, and controlled architectures. Moreover, these polymerization approaches have been routinely shown to result in retained end-group functionality that can be reactivated to continue polymerization. However, reactivation of these end groups under conditions that instead promote depropagation is a viable route to initiate depolymerization and potentially enable closed-loop recycling from polymer to monomer. In this report, we investigate light as a trigger for thermal depolymerization of polymers prepared by reversible-addition-fragmentation chain-transfer (RAFT) polymerization. We study the role of irradiation wavelength by targeting the n → π* and π → π* electronic transitions of the thiocarbonylthio end-groups of RAFT-generated polymers to enhance depolymerization via terminal bond homolysis. Specifically, we explore depolymerization of polymers with trithiocarbonate, dithiocarbamate, and p-substituted dithiobenzoate end groups with the purpose of increasing depolymerization efficiency with light. As the wavelength decreases from the visible range to the UV range, the rate of depolymerization is dramatically increased. This method of photoassisted depolymerization allows up to 87% depolymerization efficiency within 1 h, results that may further the advancement of recyclable materials and life-cycle circularity.


Assuntos
Polímeros , Polimerização , Peso Molecular
9.
Methodist Debakey Cardiovasc J ; 18(5): 74-76, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36561079

RESUMO

Every physician encounters a barrage of direct-to-consumer and direct-to-physician advertising and is faced with the daunting task of deciding which drugs to add to their clinical armamentarium and how and when to add them. The purpose of this Points to Remember is to present a commonsense approach to incorporating newer drugs, or perhaps new indications for older drugs, into our clinical practice. To illustrate these points, this article focuses on a single drug, empagliflozin, a sodium-glucose cotransporter-2 (SGLT-2) inhibitor that has been highly marketed in lay and medical media and hence has been incorporated into professional society treatment guidelines.


Assuntos
Cardiologistas , Diabetes Mellitus Tipo 2 , Inibidores do Transportador 2 de Sódio-Glicose , Humanos , Hipoglicemiantes/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Inibidores do Transportador 2 de Sódio-Glicose/efeitos adversos , Glicemia
11.
Methodist Debakey Cardiovasc J ; 18(5): 54-57, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36561089

RESUMO

This video interview features Steven Nissen, MD, telling his 2007 story of revealing that the number-1 diabetes drug, rosiglitazone, led to more cardiovascular events than placebo or a variety of competitors. The discovery resulted in new requirements for clinical trials to rule out harm. It focuses on how a new understanding of drug or drug class pharmacology often drives drug development, and includes a discussion of the approval process, which may bring a different result than was originally intended. View the video at https://youtu.be/aFtCfZyd54E.


Assuntos
Hipoglicemiantes , Humanos , Estados Unidos , Rosiglitazona/efeitos adversos , Hipoglicemiantes/efeitos adversos
12.
Methodist Debakey Cardiovasc J ; 18(5): 81-84, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36561090

RESUMO

This issue's Poet's Pen is an experiential work submitted by Captain Justin C. Cordova, MD, from the Department of Anesthesiology at Walter Reed National Military Medical Center in Bethesda, Maryland. The submission was a response to an invitation for our readers to submit poems for consideration of publication. Captain Cordova's work, "Against Medical Advice," is an engaging and provocative poem that focuses on a disturbing healthcare provider challenge-attempting to deliver "best care" to patients who, for countless reasons, choose a pathway we label as noncompliance or against medical advice.


Assuntos
Militares , Humanos , Maryland
13.
AMA J Ethics ; 24(12): E1166-1171, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-36520973

RESUMO

William Osler (1849-1919) was an academic physician who has been revered by many as an accomplished internist of his time. His contributions to the philosophy and practice of medicine foreground characteristics of a compassionate caregiver, including imperturbability and equanimity. This article defines these qualities, argues that Osler demonstrated both, and suggests how today's clinicians can apply these qualities to their own pursuits of stillness in their practices and relationships with patients.


Assuntos
Medicina , Médicos , Humanos , História do Século XX , História do Século XIX , Empatia
14.
Methodist Debakey Cardiovasc J ; 18(4): 97-100, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36132577

RESUMO

After a tumultuous time in the United States, including flunking out of medical school in 1901, Gertrude Stein, an iconic American author, art lover, and critic, moved to Paris in 1903 as an avant garde modernist who became a leading and legendary guru in the Parisian art and literature world.


Assuntos
Redação , Arte , História do Século XX , Humanos , Paris , Médicos , Estados Unidos
15.
Methodist Debakey Cardiovasc J ; 18(3): 94-97, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35734151
16.
Methodist Debakey Cardiovasc J ; 18(2): 111-113, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35414849

RESUMO

Do not go gentle into that good night,Old age should burn and rave at close of day;Rage, rage against the dying of the light. Though wise men at their end know dark is right,Because their works had forked no lightning theyDo not go gentle into that good night. Good men, the last wave by, crying how brightTheir frail deeds might have danced in a green bay,Rage, rage against the dying of the light. Wild men who caught and sang the sun in flight,And learn, too late, they grieved it on its way,Do not go gentle into that good night. Grave men, near death, who see with blinding sightBlind eyes could blaze like meteors and be gay,Rage, rage against the dying of the light. And you, my father, there on the sad height,Curse, bless, me now with your fierce tears, I pray.Do not go gentle into that good night.Rage, rage against the dying of the light. Dylan ThomasThe Poems of Dylan Thomas, New Directions Publishing 1971. This poem is in the public domain.

17.
JACC Heart Fail ; 10(2): 89-100, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35115092

RESUMO

OBJECTIVES: This study examined the association between phosphodiesterase-5 inhibitor (PDE-5i) use and outcomes in patients with contemporary centrifugal flow left ventricular assist devices (LVADs). BACKGROUND: PDE-5i use may affect outcomes in patients with continuous flow LVADs. METHODS: Patients enrolled in INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support), with HeartMate 3 (n = 4,628) or HeartWare Ventricular Assist Device (HVAD) (n = 2,601) implant were included in the analysis. The mean duration of follow-up was 11.94 ± 8.65 months. PDE-5is were used in 2,173 patients. The primary endpoint was the composite of all-cause mortality, ischemic stroke, and pump thrombosis. Propensity matching and stabilized inverse probability of treatment weights were used to adjust for baseline differences between patients receiving and not receiving PDE-5i. Adjusted Cox proportional hazards analysis was performed for each outcome. RESULTS: The primary endpoint was lower in the PDE-5i group (adjusted HR: 0.77; 95% CI: 0.69-0.86; P < 0.0001; HeartMate 3: adjusted HR: 0.77; 95% CI: 0.64-0.92; P = 0.0044; HVAD: adjusted HR: 0.76; 95% CI: 0.66-0.88; P = 0.0002). All-cause mortality was lower with PDE-5is (adjusted HR: 0.75; 95% CI: 0.65-0.86; P < 0.0001; HeartMate 3: adjusted HR: 0.70; 95% CI: 0.57-0.86; P = 0.0007; HVAD: adjusted HR: 0.78; 95% CI: 0.65-0.94; P = 0.0098) and fewer ischemic strokes with PDE-5is were observed (adjusted HR: 0.71; 95% CI: 0.56-0.89; P = 0.003; HeartMate 3: adjusted HR: 0.67; 95% CI: 0.45-0.99; P = 0.045; HVAD: adjusted HR: 0.73; 95% CI: 0.56-0.97; P = 0.03). LVAD thrombosis was unchanged with PDE-5is, with overall low event rates observed. CONCLUSIONS: Postimplant PDE-5i use was associated with lower mortality and ischemic strokes in patients with centrifugal flow LVADs.


Assuntos
Insuficiência Cardíaca , Coração Auxiliar , AVC Isquêmico , Trombose , Nucleotídeo Cíclico Fosfodiesterase do Tipo 5 , Coração Auxiliar/efeitos adversos , Humanos , Inibidores da Fosfodiesterase 5/uso terapêutico , Estudos Retrospectivos , Trombose/etiologia
18.
Am J Cardiol ; 164: 93-99, 2022 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-34815060

RESUMO

Patients with continuous flow destination therapy (DT) left ventricular assist devices (LVAD) comprise a heterogeneous population. We hypothesized that phenotypic clustering of individuals with DT LVADs by their implantation characteristics will be associated with different long-term risk profiles. We analyzed 5,999 patients with continuous flow DT LVADs in Interagency Registry for Mechanically Assisted Circulatory Support using 18 continuous variable baseline characteristics. We Z-transformed the variables and applied a Gaussian finite mixture model to perform unsupervised clustering resulting in identification of 4 phenogroups. Survival analyses considered the competing risk for cumulative incidence of transplant or the composite end point of death or heart transplant where appropriate. Phenogroup 1 (n = 1,163, 19%) was older (71 years) and primarily white (81%). Phenogroups 2 (n = 648, 11%) and 3 (n = 3,671, 61%) were of intermediate age (70 and 62 years), weight (85 and 87 kg), and ventricular size. Phenogroup 4 (n = 517, 9%) was younger (40 years), heavier (108 kg), and more racially diverse. The cumulative incidence of death, heart transplant, bleeding, LVAD malfunction, and LVAD thrombosis differed among phenogroups. The highest incidence of death and the lowest rate of heart transplant was seen in phenogroup 1 (p <0.001). For adverse outcomes, phenogroup 4 had the lowest incidence of bleeding, whereas LVAD device thrombosis and malfunction were lowest in phenogroup 1 (p <0.001 for all). Finally, the incidence of stroke, infection, and renal dysfunction were not statistically different. In conclusion, the present unsupervised machine learning analysis identified 4 phenogroups with different rates of adverse outcomes and these findings underscore the influence of phenotypic heterogeneity on post-LVAD implantation outcomes.


Assuntos
Insuficiência Cardíaca/classificação , Insuficiência Cardíaca/terapia , Transplante de Coração/estatística & dados numéricos , Coração Auxiliar , Mortalidade , Adulto , Fatores Etários , Idoso , Terapia de Ressincronização Cardíaca , Análise por Conglomerados , Desfibriladores Implantáveis , Etnicidade/estatística & dados numéricos , Feminino , Insuficiência Cardíaca/fisiopatologia , Hemorragia/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Fenótipo , Análise de Sobrevida , Trombose/epidemiologia , Aprendizado de Máquina não Supervisionado
19.
Heart Rhythm ; 19(4): 595-603, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34843964

RESUMO

BACKGROUND: Cardiac resynchronization therapy (CRT) reduces mortality and improves outcomes in appropriately selected patients with heart failure (HF); however, response may vary. OBJECTIVE: We sought to correlate 6-month CRT response assessed by clinical composite score (CCS) and left ventricular end-systolic volume index (LVESVi) with longer-term mortality and HF-related hospitalizations. METHODS: Individual patient data from 5 prospective CRT studies-Multicenter InSync Randomized Clinical Evaluation (MIRACLE), Multicenter InSync ICD Randomized Clinical Evaluation (MIRACLE ICD), InSync III Marquis, predictors of response to cardiac resynchronization therapy (PROSPECT), and Adaptive CRT-were pooled. Classification of CRT response status using CCS and LVESVi were made at 6 months. Kaplan-Meier analyses were used to assess time to mortality. Cox proportional hazards regression models were used to compute hazard ratios (HRs) for the 3 levels of CRT response: improved, stabilized, and worsened. Adjusted models controlled for baseline factors known to influence both CRT response and mortality. HF-related hospitalization was compared between CRT response categories using incidence rate ratios. RESULTS: Among a total of 1603 patients, 1426 and 1165 were evaluated in the CCS and LVESVi outcome assessments, respectively. Mortality was significantly lower for patients in the improved (CCS: HR 0.22; 95% confidence interval [CI] 0.15-0.31; LVESVi: HR 0.40; 95% CI 0.27-0.60) and stabilized (CCS: HR 0.38; 95% CI 0.24-0.61; LVESVi: HR 0.41; 95% CI 0.25-0.68) groups than in the worsened group for both measures after adjusting for potential confounders. CONCLUSION: Patients with a worsened CRT response status have a high mortality rate and HF-related hospitalizations. Stabilized patients have a more favorable prognosis than do worsened patients and thus should not be considered CRT nonresponders.


Assuntos
Terapia de Ressincronização Cardíaca , Desfibriladores Implantáveis , Insuficiência Cardíaca , Terapia de Ressincronização Cardíaca/métodos , Desfibriladores Implantáveis/efeitos adversos , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/terapia , Humanos , Prognóstico , Estudos Prospectivos , Resultado do Tratamento
20.
Clin Res Cardiol ; 111(4): 440-450, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34611778

RESUMO

AIMS: We aimed to assess the value of GDF-15, a stress-responsive cytokine, in predicting clinical outcomes in patients with heart failure (HF) with reduced ejection fraction (HFrEF) and anemia METHODS AND RESULTS: Serum GDF-15 was assessed in 1582 HFrEF and mild-to-moderate anemia patients who where followed for 28 months in the Reduction of Events by Darbepoetin alfa in Heart Failure (RED-HF) trial, an overall neutral RCT evaluating the effect darbepoetin alfa on clinical outcomes in patients with systolic heart failure and mild-to-moderate anemia. Association between baseline and change in GDF-15 during 6 months follow-up and the primary composite outcome of all-cause death or HF hospitalization were evaluated in multivariable Cox-models adjusted for conventional clinical and biochemical risk factors. The adjusted risk for the primary outcome increased with (i) successive tertiles of baseline GDF-15 (tertile 3 HR 1.56 [1.23-1.98] p < 0.001) as well as with (ii) a 15% increase in GDF-15 levels over 6 months of follow-up (HR 1.68 [1.38-2.06] p < 0.001). Addition of change in GDF-15 to the fully adjusted model improved the C-statistics (p < 0.001). No interaction between treatment and baseline or change in GDF-15 on outcome was observed. GDF-15 was inversely associated with several indices of anemia and correlated positively with ferritin. CONCLUSIONS: In patients with HF and anemia, both higher baseline serum GDF-15 levels and an increase in GDF-15 during follow-up, were associated with worse clinical outcomes. GDF-15 did not identify subgroups of patients who might benefit from correction of anemia but was associated with several indices of anemia and iron status in the HF patients.


Assuntos
Anemia , Insuficiência Cardíaca Sistólica , Insuficiência Cardíaca , Anemia/diagnóstico , Anemia/tratamento farmacológico , Fator 15 de Diferenciação de Crescimento , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca Sistólica/complicações , Humanos , Prognóstico , Volume Sistólico
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