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1.
Int J Cardiol ; 415: 132441, 2024 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-39134125

RESUMO

BACKGROUNDS: A soluble guanylyl cyclase stimulator vericiguat has been shown to reduce cardiovascular mortality or hospitalization for heart failure in patients with worsening heart failure in the VICTORIA study. However, little is known about the effects of vericiguat on biventricular structure and function. METHODS AND RESULTS: A retrospective analysis of 63 consecutive patients with heart failure with reduced ejection fraction (HFrEF) who were treated with vericiguat was performed. Clinical data and echocardiographic parameters were compared between baseline and follow-up after the initiation of vericiguat. The median follow-up duration was 266 days. Treatment with vericiguat significantly reduced the plasma BNP levels (log-transformed) compared to baseline (2.46 ± 0.51 vs. 2.14 ± 0.58, p < 0.0001). Left ventricular end-diastolic volume index and left ventricular end-systolic volume index were significantly reduced (LVEDVI, 113.5 ± 46.3 vs. 103.6 ± 51.0, p = 0.0056; LVESVI, 82.0 ± 41.9 vs. 72.8 ± 44.7, p = 0.0077; respectively). The tricuspid annular plane systolic excursion to pulmonary artery systolic pressure (TAPSE/PASP) ratio, an indicator of right ventricle-pulmonary artery (RV-PA) coupling, increased significantly after the treatment (0.56 ± 0.29 vs. 0.92 ± 1.09, p < 0.0001). Univariate and multivariate analyses showed that the treatment effects of vericiguat on BNP levels, LV reverse remodeling, and RV-PA coupling were not correlated with the achievement of the quadruple therapy with beta-blockers, renin-angiotensin system inhibitors, mineralocorticoid inhibitors, and sodium-glucose cotransporter-2 inhibitors, nor with worsening heart failure (WHF). CONCLUSION: Treatment with vericiguat improved adverse LV remodeling and RV-PA uncoupling in HFrEF patients. These effects were independent of WHF and achieving the quadruple therapy. Patients with HFrEF may benefit from early initiation of vericiguat to prevent biventricular adverse remodeling.


Assuntos
Insuficiência Cardíaca , Artéria Pulmonar , Pirimidinas , Volume Sistólico , Humanos , Masculino , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Feminino , Estudos Retrospectivos , Volume Sistólico/efeitos dos fármacos , Volume Sistólico/fisiologia , Idoso , Pessoa de Meia-Idade , Artéria Pulmonar/efeitos dos fármacos , Artéria Pulmonar/fisiopatologia , Artéria Pulmonar/diagnóstico por imagem , Resultado do Tratamento , Pirimidinas/uso terapêutico , Seguimentos , Ventrículos do Coração/fisiopatologia , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/efeitos dos fármacos , Compostos Heterocíclicos com 2 Anéis
2.
Spectrochim Acta A Mol Biomol Spectrosc ; 323: 124906, 2024 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-39111032

RESUMO

A novel CB[6]-based supramolecular assembly [K(ANS)(CB[6])2(DMF)2(H2O)0.5] (1) (CB[6] = cucurbit[6]uril, ANS- = 8-amino-1-naphthalene sulfonic acid ion) was successfully synthesized under solvothermal condition. Performance studies have shown that 1 exhibited excellent chemical stability and recycling performance. Meanwhile, 1 exhibited remarkable potential as a fluorescence sensor for the detection of 2,4,6-trinitrophenol (TNP), 4-nitrophenol (4-NP), and rifampicin (RFP) in both aqueous environments and practical samples. This sensing capability is achieved through fluorescence quenching, which offers fast response times and exceptional sensitivity, with detection limits of 0.19 µM for both TNP and 4-NP, and 0.21 µM for RFP. Even more remarkably, an anti-counterfeiting ink based on 1 and a portable test hydrogel were devised for encrypting information and visually detecting using a smartphone application. This work has the potential to expand the utilization of CB[6]-based materials in optical applications.


Assuntos
Antibacterianos , Hidrocarbonetos Aromáticos com Pontes , Imidazóis , Espectrometria de Fluorescência , Hidrocarbonetos Aromáticos com Pontes/química , Espectrometria de Fluorescência/métodos , Imidazóis/química , Antibacterianos/análise , Antibacterianos/química , Nitrocompostos/análise , Nitrocompostos/química , Limite de Detecção , Corantes Fluorescentes/química , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
3.
Cell Chem Biol ; 31(8): 1490-1502.e42, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39116881

RESUMO

We describe a protein proximity inducing therapeutic modality called Regulated Induced Proximity Targeting Chimeras or RIPTACs: heterobifunctional small molecules that elicit a stable ternary complex between a target protein (TP) selectively expressed in tumor cells and a pan-expressed protein essential for cell survival. The resulting co-operative protein-protein interaction (PPI) abrogates the function of the essential protein, thus leading to death selectively in cells expressing the TP. This approach leverages differentially expressed intracellular proteins as novel cancer targets, with the advantage of not requiring the target to be a disease driver. In this chemical biology study, we design RIPTACs that incorporate a ligand against a model TP connected via a linker to effector ligands such as JQ1 (BRD4) or BI2536 (PLK1) or CDK inhibitors such as TMX3013 or dinaciclib. RIPTACs accumulate selectively in cells expressing the HaloTag-FKBP target, form co-operative intracellular ternary complexes, and induce an anti-proliferative response in target-expressing cells.


Assuntos
Antineoplásicos , Proteínas de Ciclo Celular , Bibliotecas de Moléculas Pequenas , Humanos , Proteínas de Ciclo Celular/metabolismo , Proteínas de Ciclo Celular/antagonistas & inibidores , Bibliotecas de Moléculas Pequenas/química , Bibliotecas de Moléculas Pequenas/farmacologia , Bibliotecas de Moléculas Pequenas/síntese química , Antineoplásicos/farmacologia , Antineoplásicos/química , Antineoplásicos/síntese química , Neoplasias/tratamento farmacológico , Neoplasias/metabolismo , Neoplasias/patologia , Proliferação de Células/efeitos dos fármacos , Triazóis/química , Triazóis/farmacologia , Quinase 1 Polo-Like , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Azepinas/farmacologia , Azepinas/química , Proteínas Proto-Oncogênicas/metabolismo , Proteínas Proto-Oncogênicas/antagonistas & inibidores , Fatores de Transcrição/metabolismo , Fatores de Transcrição/antagonistas & inibidores , Indolizinas/química , Indolizinas/farmacologia , Linhagem Celular Tumoral , Compostos Bicíclicos Heterocíclicos com Pontes/química , Compostos Bicíclicos Heterocíclicos com Pontes/farmacologia , Ligantes , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/síntese química , Compostos Heterocíclicos com 2 Anéis/farmacologia , Compostos Heterocíclicos com 2 Anéis/química , Compostos Heterocíclicos com 2 Anéis/síntese química , Proteínas Nucleares/metabolismo , Proteínas Nucleares/antagonistas & inibidores , Proteínas que Contêm Bromodomínio , Óxidos N-Cíclicos , Compostos de Piridínio
4.
J Am Chem Soc ; 146(36): 25383-25393, 2024 Sep 11.
Artigo em Inglês | MEDLINE | ID: mdl-39196894

RESUMO

The regulation of the cell membrane potential plays a crucial role in governing the transmembrane transport of various ions and cellular life processes. However, in situ and on-demand modulation of cell membrane potential for ion channel regulation is challenging. Herein, we have constructed a supramolecular assembly system based on water-soluble cationic oligo(phenylenevinylene) (OPV) and cucurbit[7]uril (CB[7]). The controllable disassembly of OPV/4CB[7] combined with the subsequent click reaction provides a step-by-step adjustable surface positive potential. These processes can be employed in situ on the plasma membrane to modulate the membrane potential on-demand for precisely controlling the activation of the transient receptor potential vanilloid 1 (TRPV1) ion channel and up-regulating exogenous calcium-responsive gene expression. Compared with typical optogenetics, electrogenetics, and mechanogenetics, our strategy provides a perspective supramolecular genetics toolbox for the regulation of membrane potential and downstream intracellular gene regulation events.


Assuntos
Imidazóis , Potenciais da Membrana , Imidazóis/química , Humanos , Hidrocarbonetos Aromáticos com Pontes/química , Polivinil/química , Membrana Celular/metabolismo , Membrana Celular/química , Canais de Cátion TRPV/metabolismo , Células HEK293 , Cálcio/metabolismo , Cálcio/química , Canais de Cálcio/metabolismo , Canais de Cálcio/química , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
5.
Anal Chem ; 96(36): 14490-14498, 2024 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-39185815

RESUMO

Bacterial infections have emerged as a significant contributor to global mortality and morbidity rates. Herein, we introduce a dual fluorescence "turn-on" supramolecular sensor array composed of three assembled complexes (C1-C3), formed from three positively charged fluorophores (A1-A3) and one cucurbit[7]uril (CB[7]). The ability of this three-element array to simultaneously recognize 10 bacterial species within just 30 s was remarkable, boasting an impressive 100% accuracy. Additionally, the array excelled at distinguishing among various bacterial mixtures and enabled the quantitative detection of common bacterial strains. Notably, it has been skillfully applied to differentiate 10 bacterial samples in urine, achieving excellent differentiation and showcasing promising potential for medical diagnostic applications.


Assuntos
Hidrocarbonetos Aromáticos com Pontes , Corantes Fluorescentes , Imidazóis , Imidazóis/química , Hidrocarbonetos Aromáticos com Pontes/química , Corantes Fluorescentes/química , Bactérias/isolamento & purificação , Humanos , Espectrometria de Fluorescência , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
6.
Int J Cardiol ; 415: 132467, 2024 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-39159756

RESUMO

BACKGROUND: Heart failure (HF) is a chronic-progressive disease. Once established, it is almost impossible to obtain a restitutio ad integrum of the cardiac function, but current strategies aim at slowing down the progression towards the terminal stages of the disease, which inevitably lead to the exitus. On the basis of these considerations, it appears clear that pharmacological interventions applied in this clinical condition should prevent first the development of the disease, by controlling the risk factors for HF thus reducing the onset of the disease, second slowing the disease evolution towards the terminal phases thus containing clinical symptoms and reducing the number of hospitalizations. In this scenario, the add-on therapy with vericiguat seems promising as reported in the VICTORIA study without affecting renal function. Several evidence indicates that renal arterial resistance index (RRI) seems to better reflect cardiovascular damage also in HF patients, thus affecting patients prognosis METHODS: In the present study we have analyzed the effect of vericiguat administration in 27 HF patients specifically evaluating RRI. RESULTS: Vericiguat signicantly reduces RRI. CONCLUSIONS: The findings of the present study seems to indicate that vericiguat, beyond its primary mechanism of action, might offer an additional advantage in HF patients.


Assuntos
Insuficiência Cardíaca , Resistência Vascular , Humanos , Masculino , Feminino , Idoso , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Pessoa de Meia-Idade , Resistência Vascular/efeitos dos fármacos , Resistência Vascular/fisiologia , Artéria Renal/efeitos dos fármacos , Pirimidinas/administração & dosagem , Compostos Heterocíclicos com 2 Anéis
7.
Int Heart J ; 65(4): 684-692, 2024 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-39010220

RESUMO

Vericiguat, a soluble guanylate cyclase stimulator known for augmenting cyclic guanosine monophosphate production, has garnered substantial clinical attention in patients with systolic heart failure. Despite its proven efficacy, discerning the specific subset of individuals who can enjoy clinical advantages from vericiguat therapy in contemporary real-world clinical practice, particularly among the individuals undergoing "quadruple medical therapy" comprising administration of a beta-blocker, angiotensin receptor neprilysin inhibitor, mineralocorticoid receptor antagonist, and sodium-glucose co-transporter 2 inhibitor, remains an unresolved query. This study involved patients undergoing 3-month vericiguat therapy alongside complete quadruple medical therapy in a contemporary real-world clinical practice. Baseline characteristics associated with the primary outcome, defined as a reduction in serum NT pro-B-type natriuretic peptide (BNP) levels over the 3-month therapeutic duration, were scrutinized. A cohort of 24 patients (median age: 66 years; 20 males) were included. All participants diligently adhered to the 3-month vericiguat therapy in conjunction with the quadruple medical regimen. A higher baseline systolic blood pressure emerged as an independent factor linked to the primary outcome, yielding an adjusted odds ratio of 1.31 (95% confidence interval: 1.03-1.65, P = 0.026) at a threshold of 105 mmHg. This threshold notably stratified the trajectories of serum NT pro-BNP levels during the 3-month vericiguat therapy. In conclusion, preservation of baseline systolic blood pressure emerged as a pivotal determinant for reaping the clinical benefits from mid-term vericiguat therapy among patients with systolic heart failure receiving quadruple medical therapy.


Assuntos
Quimioterapia Combinada , Insuficiência Cardíaca Sistólica , Peptídeo Natriurético Encefálico , Humanos , Masculino , Feminino , Insuficiência Cardíaca Sistólica/tratamento farmacológico , Insuficiência Cardíaca Sistólica/fisiopatologia , Idoso , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/sangue , Resultado do Tratamento , Pirimidinas/uso terapêutico , Pirimidinas/administração & dosagem , Fragmentos de Peptídeos/sangue , Antagonistas Adrenérgicos beta/uso terapêutico , Antagonistas de Receptores de Mineralocorticoides/uso terapêutico , Antagonistas de Receptores de Mineralocorticoides/administração & dosagem , Neprilisina/antagonistas & inibidores , Compostos Heterocíclicos com 2 Anéis
9.
Heart Fail Rev ; 29(5): 1135-1143, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39044114

RESUMO

In recent years, thanks to the advent of new classes of drugs (ARNI and SGLT2-i), the prognosis of patients suffering from heart failure with reduced ejection fraction (HFrEF) has gradually improved. Nonetheless, there is a residual risk that is not targeted by these therapies. Currently, it is recognized that vericiguat, an oral stimulator of soluble guanylate cyclase (sGC), can restore the NO-sGC-cGMP pathway, through stimulation and activation of sGC, aiming to increase cGMP levels with a reduction in heart failure-related oxidative stress and endothelial dysfunction. Even though the Victoria trial demonstrated that HFrEF patients in treatment with vericiguat showed a 10% reduction in the composite of cardiovascular mortality and rehospitalization for heart failure, statistically significantly reducing heart failure hospitalization, the international guidelines limit its use as a second-line drug for patients with worsening symptomatology despite optimized medical therapy. Furthermore, vericiguat has proved to be a valid therapeutic ally especially in those patients with comorbidities such that they cannot receive the classic four-pillar therapy of HF (in particular renal failure). In this review, the authors report on randomized clinical trials, substudies, and meta-analysis about vericiguat in HFrEF, emphasizing the strengths that would suggest the possible role of vericiguat as the fifth pillar of the HFrEF treatment, acknowledging that there are still gaps in the evidence that need to be clarified.


Assuntos
Insuficiência Cardíaca , Volume Sistólico , Humanos , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Volume Sistólico/fisiologia , Volume Sistólico/efeitos dos fármacos , Pirimidinas/uso terapêutico , Pirrolidinas/uso terapêutico , Resultado do Tratamento , Guanilil Ciclase Solúvel/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Ensaios Clínicos Controlados Aleatórios como Assunto , Compostos Heterocíclicos com 2 Anéis
10.
Heart Fail Rev ; 29(5): 949-955, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38951303

RESUMO

Quadruple therapy is effective for patients with heart failure with reduced ejection fraction, providing significant clinical benefits, including reduced mortality. Clinicians are now in an era focused on how to initiate and titrate quadrable therapy in the early phase of the disease trajectory, including during heart failure hospitalization. However, patients with heart failure with reduced ejection fraction still face a significant "residual risk" of mortality and heart failure hospitalization. Despite the effective implementation of quadruple therapy, high mortality and rehospitalization rates persist in heart failure with reduced ejection fraction, and many patients cannot maximize therapy due to side effects such as hypotension and renal dysfunction. In this context, ivabradine, vericiguat, and omecamtiv mecarbil may have adjunct roles in addition to quadruple therapy (note that omecamtiv mecarbil is not currently approved for clinical use). However, the contemporary use of ivabradine and vericiguat is relatively low globally, likely due in part to the under-recognition of the role of these therapies as well as costs. This review offers clinicians a straightforward guide for bedside evaluation of potential candidates for these medications. Quadruple therapy, with strong evidence to reduce mortality, should always be prioritized for implementation. As second-line therapies, ivabradine could be considered for patients who cannot achieve optimal heart rate control (≥ 70 bpm at rest) despite maximally tolerated beta-blocker dosing. Vericiguat could be considered for high-risk patients who have recently experienced worsening heart failure events despite being on quadrable therapy, but they should not have N-terminal pro-B-type natriuretic peptide levels exceeding 8000 pg/mL. In the future, omecamtiv mecarbil may be considered for severe heart failure (New York Heart Association class III to IV, ejection fraction ≤ 30%, and heart failure hospitalization within 6 months) when current quadrable therapy is limited, although this is still hypothesis-generating and requires further investigation before its approval.


Assuntos
Quimioterapia Combinada , Insuficiência Cardíaca , Ivabradina , Volume Sistólico , Humanos , Ivabradina/uso terapêutico , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Volume Sistólico/efeitos dos fármacos , Volume Sistólico/fisiologia , Fármacos Cardiovasculares/uso terapêutico , Fármacos Cardiovasculares/farmacologia , Pirimidinas/uso terapêutico , Ureia/análogos & derivados , Ureia/uso terapêutico , Benzazepinas/uso terapêutico , Benzazepinas/farmacologia , Compostos Heterocíclicos com 2 Anéis
11.
Nat Commun ; 15(1): 4787, 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38839843

RESUMO

Pure organic phosphorescence resonance energy transfer is a research hotspot. Herein, a single-molecule phosphorescence resonance energy transfer system with a large Stokes shift of 367 nm and near-infrared emission is constructed by guest molecule alkyl-bridged methoxy-tetraphenylethylene-phenylpyridines derivative, cucurbit[n]uril (n = 7, 8) and ß-cyclodextrin modified hyaluronic acid. The high binding affinity of cucurbituril to guest molecules in various stoichiometric ratios not only regulates the topological morphology of supramolecular assembly but also induces different phosphorescence emissions. Varying from the spherical nanoparticles and nanorods for binary assemblies, three-dimensional nanoplate is obtained by the ternary co-assembly of guest with cucurbit[7]uril/cucurbit[8]uril, accompanying enhanced phosphorescence at 540 nm. Uncommonly, the secondary assembly of ß-cyclodextrin modified hyaluronic acid and ternary assembly activates a single intramolecular phosphorescence resonance energy transfer process derived from phenyl pyridines unit to methoxy-tetraphenylethylene function group, enabling a near-infrared delayed fluorescence at 700 nm, which ultimately applied to mitochondrial targeted imaging for cancer cells.


Assuntos
Transferência Ressonante de Energia de Fluorescência , Ácido Hialurônico , Imidazóis , beta-Ciclodextrinas , beta-Ciclodextrinas/química , Humanos , Ácido Hialurônico/química , Imidazóis/química , Transferência Ressonante de Energia de Fluorescência/métodos , Hidrocarbonetos Aromáticos com Pontes/química , Nanopartículas/química , Estilbenos/química , Piridinas/química , Células HeLa , Nanotubos/química , Mitocôndrias/metabolismo , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
12.
Int J Pharm ; 660: 124351, 2024 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-38897491

RESUMO

Piroxicam (PX) is a nonsteroidal anti-inflammatory drug (NSAID) commonly associated with gastrointestinal (GI) injuries, including dyspepsia, heartburn, inflammation, bleeding, ulceration, and life-threatening perforation. The ß-cyclodextrin (ß-CD)-based PX formulation (PX@CD) has been shown to reduce gastric side effects by improving PX's solubility and dissolution rates. However, the solubility of PX can only be increased to a limited extent by ß-CD, due to the low binding constant between PX and ß-CD (∼100 M-1). As a result, adverse reactions such as epigastric pain and pyrosis are still commonly reported. Cucurbit[7]uril (CB[7]) is a synthetic macrocyclic host compound that binds strongly to various drugs. In this study, we demonstrated that CB[7] forms complexes with PX in the gastric acid environment with a binding constant approximately 70 times higher than that between ß-CD and PX. The PX@CB[7] inclusion complexes exhibited rapid dissolution rates in the gastric environment. In addition, PX@CB[7] showed significantly higher oral bioavailability and maximum concentration (Cmax) compared to PX and PX@CD (1:2.5), resulting in improved anti-inflammatory effects in both mouse and rat models. Moreover, PX@CB[7] (1:2.5) had the least adhesion to the gastric mucosa and caused the mildest gastric side effects in rat models when compared to PX, PX@CD (1:2.5), and PX@CB[7] (1:1). Lastly, CB[7] demonstrated good oral biocompatibility in a subacute toxicity evaluation study. These findings indicate that CB[7] could be used as an excipient to improve treatment effectiveness and decrease adverse reactions in orally administered formulations with a favorable safety profile.


Assuntos
Anti-Inflamatórios não Esteroides , Disponibilidade Biológica , Hidrocarbonetos Aromáticos com Pontes , Imidazóis , Piroxicam , Solubilidade , beta-Ciclodextrinas , Animais , Piroxicam/administração & dosagem , Piroxicam/química , Piroxicam/farmacocinética , Piroxicam/efeitos adversos , Imidazóis/química , Imidazóis/administração & dosagem , Imidazóis/farmacocinética , Imidazóis/efeitos adversos , Hidrocarbonetos Aromáticos com Pontes/química , Hidrocarbonetos Aromáticos com Pontes/administração & dosagem , Hidrocarbonetos Aromáticos com Pontes/farmacocinética , Anti-Inflamatórios não Esteroides/administração & dosagem , Anti-Inflamatórios não Esteroides/química , Anti-Inflamatórios não Esteroides/farmacocinética , Anti-Inflamatórios não Esteroides/efeitos adversos , beta-Ciclodextrinas/química , beta-Ciclodextrinas/administração & dosagem , Masculino , Camundongos , Ratos Sprague-Dawley , Ratos , Liberação Controlada de Fármacos , Administração Oral , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
13.
Am J Cardiovasc Drugs ; 24(4): 469-479, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38856965

RESUMO

Heart failure with reduced ejection fraction (HFrEF) represents an emerging epidemic, particularly affecting frail, older, and multimorbid patients. Current therapy for the management of HFrEF includes four different classes of disease-modifying drugs, commonly referred to as 'four pillars', which target the neurohormonal system that is overactivated in HF and contributes to its progression. These classes of drugs include ß-blockers, inhibitors of the renin-angiotensin-aldosterone system, mineralocorticoid receptor antagonists, and sodium-glucose co-transporter-2 (SGLT2) inhibitors. Unfortunately, these agents cannot be administered as frequently as needed to older patients because of poor tolerability and comorbidities. In addition, although these drugs have dramatically increased the survival expectations of patients with HF, their residual risk of rehospitalization and death at 5 years remains considerable. Vericiguat, a soluble guanylate cyclase (sGC) stimulator, was reported to exert beneficial effects in patients with worsening HF, including older subjects, reducing the rate of both hospitalizations and deaths, with limited adverse effects and drug interaction. In this narrative review, we present the current state of art on vericiguat, with a particular focus on elderly and frail patients.


Assuntos
Insuficiência Cardíaca , Volume Sistólico , Humanos , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Volume Sistólico/efeitos dos fármacos , Idoso , Pirimidinas/uso terapêutico , Pirimidinas/efeitos adversos , Pirimidinas/farmacologia , Compostos Heterocíclicos com 2 Anéis
14.
Food Chem ; 457: 140100, 2024 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-38901352

RESUMO

Chloramphenicol (CAP) poses a threat to human health due to its toxicity and bioaccumulation, and it is very important to measure it accurately and sensitively. This work explored a host-guest recognition strategy to mediate dual aggregation-induced electrochemiluminescence (AIECL) of 1,1,2,2-tetrakis(4-(pyridin-4-yl) phenyl)-ethene (TPPE) for ratio detection of CAP, in which, cucurbit[8]uril (CB[8]) served as host to assemble guest TPPE. The resulting supramolecular complex CB[8]-TPPE exhibited excellent dual-AIECL-emission with signal strength approximately four times that of TPPE aggregates and black hole quencher-1 (BHQ1) could efficiently quench dual-AIECL signal. CB[8]-TPPE coupled dual-function quencher BHQ1 and high-efficiency DNA reactor to achieve ultra-sensitive detection of CAP, exhibiting a linearity range of 10 fmol·L-1-100 nmol·L-1 and limit of detection of 1.81 fmol·L-1. CB[8]-TPPE provides a novel way to improve the dual-emission of TPE derivatives and sets up a promising platform for CAP detection, demonstrating a good practical application potential.


Assuntos
Cloranfenicol , Técnicas Eletroquímicas , Medições Luminescentes , Cloranfenicol/análise , Cloranfenicol/química , Técnicas Eletroquímicas/instrumentação , Medições Luminescentes/instrumentação , Medições Luminescentes/métodos , Limite de Detecção , Antibacterianos/química , Antibacterianos/análise , Contaminação de Alimentos/análise , Hidrocarbonetos Aromáticos com Pontes/química , Luminescência , Imidazóis/química , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
15.
Int J Biol Macromol ; 274(Pt 2): 133374, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38925182

RESUMO

KRAS G12D is the most common oncogenic mutation identified in several types of cancer. Therefore, design of inhibitors targeting KRAS G12D represents a promising strategy for anticancer therapy. MRTX1133 is a highly potent inhibitor (approximate experiment Kd ≈ 0.0002 nM) of KRAS G12D and is currently in Phase 1/2 study, however, pathways of the compound binding to KRAS G12D has remained unknown, and the mechanism underlying the complicated dynamic process are challenging to capture experimentally, which hinder the structure-based anti-cancer drug design. Here, using MRTX1133 as a probe, unbiased molecular dynamics (MD) was used to simulate the process of MRTX1133 spontaneously binding to KRAS G12D. In six of 42 independent MD simulation (a total of 99 µs), MRTX1133 was observed to successfully associate with KRAS G12D. The kinetically metastable states refer to the potential pathways of MRTX1133 binding to KRAS G12D were revealed by Markov state models (MSM) analysis. Additionally, 8 key residues that are essential for MRTX1133 recognition and tight binding at the preferred low energy states were identified by MM/GBSA analysis. In sum, this study provides a new perspective on understanding the pathways and mechanism of MRTX1133 binding to KRAS G12D.


Assuntos
Cadeias de Markov , Simulação de Dinâmica Molecular , Ligação Proteica , Proteínas Proto-Oncogênicas p21(ras) , Proteínas Proto-Oncogênicas p21(ras)/genética , Proteínas Proto-Oncogênicas p21(ras)/química , Proteínas Proto-Oncogênicas p21(ras)/metabolismo , Humanos , Mutação , Compostos Heterocíclicos com 2 Anéis , Naftalenos
16.
J Mater Chem B ; 12(25): 6137-6145, 2024 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-38842102

RESUMO

DNA hydrogels have been demonstrated with the advantages of good stability, easy modification, and extraordinary biocompatibility, which enables their great application prospects in biosensing, tissue engineering, and biomedicine. Based on the host-guest recognition properties of cucurbit[8]uril (CB[8]), we proposed a general method for constructing functional supramolecular DNA nanogels. Guest molecules have been conjugated into the DNA building units, which could be further crosslinked with CB[8] to construct supramolecular DNA nanogels. At the same time, the aptamer has also been modified into the hydrogel network to achieve cell targeting. These supramolecular DNA nanogels have been demonstrated with a controllable size and multiple stimuli responses, in addition to the excellent biocompatibility, stability and good targeting drug transport ability. Such a host-guest based strategy will provide a molecular library as a "toolbox" for the functionalization of DNA nanogels.


Assuntos
DNA , DNA/química , Humanos , Nanogéis/química , Sistemas de Liberação de Medicamentos , Imidazóis/química , Hidrogéis/química , Hidrocarbonetos Aromáticos com Pontes/química , Portadores de Fármacos/química , Materiais Biocompatíveis/química , Materiais Biocompatíveis/síntese química , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
17.
Biomed Pharmacother ; 177: 117026, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38936197

RESUMO

Cyclophosphamide is an anti-neoplastic drug that has shown competence in the management of a broad range of malignant tumors. In addition, it represents a keystone agent for management of immunological conditions. Despite these unique properties, induction of lung toxicity may limit its clinical use. Omarigliptin is one of the dipeptidyl peptidase-4 inhibitors that has proven efficacy in management of diabetes mellitus. Rosinidin is an anthocyanidin flavonoid that exhibited promising results in management of diseases characterized by oxidative stress, inflammation, and apoptosis. The present work investigated the possible effects of omarigliptin with or without rosinidin on cyclophosphamide-induced lung toxicity with an exploration of the molecular mechanisms that contribute to these effects. In a rodent model of cyclophosphamide elicited lung toxicity, the potential efficacy of omarigliptin with or without rosinidin was investigated at both the biochemical and the histopathological levels. Both omarigliptin and rosinidin exhibited a synergistic ability to augment the tissue antioxidant defenses, mitigate the inflammatory pathways, restore glucagon-like peptide-1 levels, modulate high mobility group box 1 (HMGB1)/receptors of advanced glycation end products (RAGE)/nuclear factor kappa B (NF-κB) axis, downregulate the fibrogenic mediators, and create a balance between the pathways involved in apoptosis and the autophagy signals in the pulmonary tissues. In conclusion, omarigliptin/rosinidin combination may be introduced as a novel therapeutic modality that attenuates the different forms of lung toxicities induced by cyclophosphamide.


Assuntos
Ciclofosfamida , Peptídeo 1 Semelhante ao Glucagon , Inflamassomos , Proteína 3 que Contém Domínio de Pirina da Família NLR , Fosfatidilinositol 3-Quinases , Proteínas Proto-Oncogênicas c-akt , Piranos , Transdução de Sinais , Animais , Ciclofosfamida/toxicidade , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Masculino , Inflamassomos/metabolismo , Inflamassomos/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais/efeitos dos fármacos , Ratos , Fosfatidilinositol 3-Quinases/metabolismo , Peptídeo 1 Semelhante ao Glucagon/metabolismo , Piranos/farmacologia , Pulmão/efeitos dos fármacos , Pulmão/metabolismo , Pulmão/patologia , Antocianinas/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Inibidores da Dipeptidil Peptidase IV/farmacologia , Ratos Wistar , Pirimidinas/farmacologia , Lesão Pulmonar/induzido quimicamente , Lesão Pulmonar/tratamento farmacológico , Lesão Pulmonar/metabolismo , Lesão Pulmonar/patologia , Proteína Forkhead Box O1 , Compostos Heterocíclicos com 2 Anéis
18.
Clin Pharmacokinet ; 63(6): 751-771, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38916717

RESUMO

Vericiguat is an oral soluble guanylate cyclase stimulator and enhances the cyclic guanosine monophosphate pathway independently of nitric oxide as well as synergistically in normal- and low-nitric oxide conditions. This review describes the pharmacokinetic and pharmacodynamic profile of vericiguat and summarizes the effect of vericiguat on cardiac electrophysiology and population pharmacokinetic/pharmacodynamic relationships. Vericiguat demonstrates virtually complete absorption and increased exposure with food. Vericiguat has high oral bioavailability when taken with food (93.0%) with dose-proportional pharmacokinetics in healthy volunteers. Vericiguat has slightly less than dose-proportional pharmacokinetics with a slight decrease in bioavailability at higher doses in patients with heart failure (HF) with reduced ejection fraction (HFrEF). Vericiguat is a low-clearance drug, with a half-life of approximately 20 h in healthy volunteers and 30 h in patients with HFrEF. Most drug metabolism is achieved by glucuronidation. Vericiguat has pharmacodynamic effects as expected from its pharmacological mechanism of action (i.e., relaxation of the smooth muscles in the vasculature leading to changes in hemodynamics). In the VICTORIA trial (NCT02861534), which enrolled patients with HFrEF, no meaningful exposure-response relationships for the incidence of symptomatic hypotension or syncope were evident. There were no significant imbalances in the incidence of undesirable hemodynamic-related effects (symptomatic hypotension and syncope) in subgroups with HFrEF defined by sex, age, race, and renal impairment. In addition, most patients achieved the 10-mg target dose per the blood pressure-guided titration regimen. No dose adjustments due to body weight, age, sex, race, or hepatic/renal impairment are necessary in adult patients with HFrEF. Observed and predicted changes in vericiguat exposure when co-administered with perpetrator drugs were small and not clinically meaningful. In addition, vericiguat has low potential as a perpetrator to affect exposure and/or pharmacodynamic effects of drugs commonly prescribed in patients with heart failure; therefore, no dose adjustment of these drugs is required in patients taking vericiguat. There is limited experience on the combined use of vericiguat with long-acting nitrates in patients with HFrEF. The ongoing VICTOR trial (NCT05093933), which is investigating vericiguat in patients with HFrEF, permits the co-administration of long-acting nitrates. Combined use of vericiguat and phosphodiesterase type-5 inhibitors has not been studied in patients with HFrEF and is therefore not recommended because of the potential increased risk for symptomatic hypotension. Vericiguat was not associated with electrophysiological abnormalities in preclinical and clinical studies up to the approved dose of 10 mg at steady state. Vericiguat is approved for the treatment of recently decompensated patients with worsening HFrEF. Vericiguat's safety and efficacy profile in patients with HFrEF will be further characterized by the VICTOR trial (NCT05093933) in adults without recent decompensation and in a pediatric population with HF due to left ventricular systolic dysfunction (VALOR trial, NCT05714085).


Assuntos
Insuficiência Cardíaca , Humanos , Administração Oral , Disponibilidade Biológica , Relação Dose-Resposta a Droga , Meia-Vida , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Compostos Heterocíclicos com 2 Anéis , Pirimidinas/farmacocinética , Pirimidinas/administração & dosagem , Pirimidinas/farmacologia , Pirimidinas/efeitos adversos , Ensaios Clínicos como Assunto
19.
PLoS One ; 19(6): e0305621, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38905267

RESUMO

OBJECTIVE: This study aims to evaluate the efficacy and safety of JAK inhibitors in the treatment of patients with RA. METHODS: The databases CNKI, VIP, Wanfang, CBM, and PubMed, Embase, Cochrane Library and Web of Science were searched to identify relevant randomized controlled trials (RCTs), all from the time of database creation to April 2024. Screening, data extraction, and risk of bias assessment (using Review Manager-5.3 software) were independently performed by at least two authors. The network meta-analysis was conducted using R 4.1.3 software. PROSPERO registration number: CRD42022370444. RESULTS: Thirty-three RCTs included 15,961 patients The experimental groups involved six JAK inhibitors (filgotinib, tofacitinib, decernotinib, baricitinib, upadacitinib and peficitinib) and 12 interventions (different doses of the six JAK inhibitors), and the control group involved adalimumab (ADA) and placebo. Compared with placebo, all JAK inhibitors showed a significant increase in efficacy measures (ACR20/50/70). Compared with ADA, only tofacitinib, low-dose decernotinib, and high-dose peficitinib showed a significant increase in ACR20/50/70. Decernotinib ranked first in the SUCRA ranking of ACR20/50/70. In terms of safety indicators, only those differences between low-dose filgotinib and high-dose upadacitinib, low-dose tofacitinib and high-dose upadacitinib were statistically significant. Low-dose filgotinib ranked first in the SUCRA ranking with adverse events as safety indicators. Only the efficacy and safety of tofacitinib ranked higher among different SUCRA rankings. CONCLUSION: Six JAK inhibitors have better efficacy than placebo. The superior efficacy of decernotinib and safety of low-dose filgotinib can be found in the SUCRA. However, there are no significant differences in safety between the different JAK inhibitors. Head-to-head trials, directly comparing one against each other, are required to provide more certain evidence.


Assuntos
Artrite Reumatoide , Azetidinas , Teorema de Bayes , Inibidores de Janus Quinases , Metanálise em Rede , Piperidinas , Pirimidinas , Humanos , Artrite Reumatoide/tratamento farmacológico , Inibidores de Janus Quinases/uso terapêutico , Inibidores de Janus Quinases/efeitos adversos , Pirimidinas/uso terapêutico , Pirimidinas/efeitos adversos , Piperidinas/uso terapêutico , Piperidinas/efeitos adversos , Azetidinas/uso terapêutico , Azetidinas/efeitos adversos , Purinas/uso terapêutico , Purinas/efeitos adversos , Pirróis/uso terapêutico , Pirróis/efeitos adversos , Pirazóis/uso terapêutico , Pirazóis/efeitos adversos , Sulfonamidas/uso terapêutico , Sulfonamidas/efeitos adversos , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento , Compostos Heterocíclicos com 2 Anéis/uso terapêutico , Compostos Heterocíclicos com 2 Anéis/efeitos adversos , Niacinamida/análogos & derivados , Niacinamida/uso terapêutico , Niacinamida/efeitos adversos , Benzamidas/uso terapêutico , Benzamidas/efeitos adversos , Compostos Heterocíclicos com 3 Anéis/uso terapêutico , Compostos Heterocíclicos com 3 Anéis/efeitos adversos , Antirreumáticos/uso terapêutico , Antirreumáticos/efeitos adversos , Triazóis/uso terapêutico , Triazóis/efeitos adversos , Triazóis/administração & dosagem , Adamantano/análogos & derivados , Piridinas , Valina/análogos & derivados
20.
J Am Chem Soc ; 146(27): 18513-18523, 2024 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-38941287

RESUMO

Gene expression technology has become an indispensable tool for elucidating biological processes and developing biotechnology. Cell-free gene expression (CFE) systems offer a fundamental platform for gene expression-based technology, in which the reversible and programmable control of transcription can expand its use in synthetic biology and medicine. This study shows that CFE can be controlled via the host-guest interaction of cucurbit[7]uril (CB[7]) with N6-guest-modified adenosines. These adenosine derivatives were conveniently incorporated into the DNA strand using a post-synthetic approach and formed a selective and stable base pair with complementary thymidine in DNA. Meanwhile, alternate addition of CB[7] and the exchanging guest molecule induced the reversible formation of a duplex structure through the formation and dissociation of a bulky complex on DNA. The kinetics of the reversibility was fine-tuned by changing the size of the modified guest moieties. When incorporated into a specific region of the T7 promoter sequence, the guest-modified adenosines enabled tight and reversible control of in vitro transcription and protein expression in the CFE system. This study marks the first utility of the host-guest interaction for gene expression control in the CFE system, opening new avenues for developing DNA-based technology, particularly for precise gene therapy and DNA nanotechnology.


Assuntos
Adenosina , Hidrocarbonetos Aromáticos com Pontes , DNA , Imidazóis , Imidazóis/química , Adenosina/química , Adenosina/análogos & derivados , Hidrocarbonetos Aromáticos com Pontes/química , DNA/química , Sistema Livre de Células , Regiões Promotoras Genéticas , Expressão Gênica , Compostos Heterocíclicos com 2 Anéis , Compostos Macrocíclicos , Imidazolidinas
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