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1.
Clin Hypertens ; 29(1): 25, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37653547

RESUMO

Nocturnal blood pressure (BP) has been shown to have a significant predictive value for cardiovascular disease. In some cases, it has a superior predictive value for future cardiovascular outcomes than daytime BP. As efficacy of BP medications wanes during nighttime and early morning, control of nocturnal hypertension and morning hypertension can be difficult. As such, chronotherapy, the dosing of BP medication in the evening, has been an ongoing topic of interest in the field of hypertension. Some studies have shown that chronotherapy is effective in reducing nocturnal BP, improving non dipping and rising patterns to dipping patterns, and improving cardiovascular prognosis. However, criticism and concerns have been raised regarding the design of these studies, such as the Hygia study, and the implausible clinical benefits in cardiovascular outcomes considering the degree of BP lowering from bedtime dosing. Studies have shown that there is no consistent evidence to suggest that routine administration of antihypertensive medications at bedtime can improve nocturnal BP and early morning BP control. However, in some cases of uncontrolled nocturnal hypertension and morning hypertension, such as in those with diabetes mellitus, chronic kidney disease, and obstructive sleep apnea, bedtime dosing has shown efficacy in reducing evening and early morning BP. The recently published the Treatment in Morning versus Evening (TIME) study failed to demonstrate benefit of bedtime dosing in reducing cardiovascular outcomes in patients with hypertension. With issues of the Hygia study and negative results from the TIME study, it is unclear at this time whether routine bedtime dosing is beneficial for reducing cardiovascular outcomes.

2.
BMB Rep ; 54(8): 437, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34433511

RESUMO

[Erratum to: BMB Reports 2021; 54(5): 278-283, PMID: 33972011] In the originally published version of this article, there was an error in the Supplementary information. Fig. 1 as following image was missing in the Supplementary Information. The Supplementary file in the original version has now been updated to include the corrected. We apologize for any inconvenience that this may have caused.

4.
J Clin Hypertens (Greenwich) ; 23(3): 504-512, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33283971

RESUMO

The "triple burden" of aging population, hypertension, and mental health problems making elderly in Asia is more vulnerable. There is evidence of a bidirectional relationship between mental health and hypertension, which results in lower quality of life, lower rate of treatment adherence, and higher mortality among elderly individuals. It is essential to overcome known barriers and care for the elderly with high-risk factors in order to address these burdens. This review revealed that elderly with hypertension were more likely to suffer from depression and anxiety. Therefore, debunking myths, creating awareness regarding mental health, and increasing access to mental health resources through holistic community-based programs would greatly reduce such problems and optimize the chances of success in controlling hypertension-related problems.


Assuntos
Hipertensão , Saúde Mental , Idoso , Transtornos de Ansiedade , Ásia/epidemiologia , Humanos , Hipertensão/epidemiologia , Qualidade de Vida
5.
Molecules ; 24(9)2019 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-31027372

RESUMO

Nelumbo nucifera Gaertn. (lotus) is an important medicinal plant, and many parts of the plant have been investigated for their therapeutic effects. However, the therapeutic effect of receptacles of lotuses on pathological cardiomyocyte hypertrophy has not been investigated yet. Therefore, the current study aimed to determine the protective effect of lotus against angiotensin II (Ang II)-induced cardiomyocyte hypertrophy in vitro. Ang II was used to induce hypertrophy of H9c2 cells. The lotus receptacle powder (MeOH extract of receptaculum Nelumbinis; MRN) used in the experiments was prepared by MeOH extraction and subsequent evaporation. To evaluate the effect of MRN on cardiomyocyte hypertrophy, cell size, protein synthesis, and hypertrophic marker expressions were examined. The antioxidant ability of MRN was determined by using CM-H2DCFDA, a general oxidative stress indicator. Ang II-induced cardiomyocyte hypertrophy was significantly attenuated by 5 µg/mL of MRN, as confirmed by the reductions in cell size, protein synthesis, and hypertrophic marker expression. MRN also attenuated Ang II-induced excessive intracellular reactive oxygen species (ROS) production through the suppression of protein kinase C (PKC), extracellular-signal-regulated kinase (ERK), and NF-κB activation and subsequent type I angiotensin receptor (AT1R), receptor for advanced glycation end products (RAGE), and NADPH oxidase (NOX) expression. MRN exerted a significant protective effect against Ang II-induced cardiomyocyte hypertrophy through suppression of PKC-ERK signaling, and this subsequently led to attenuation of intracellular ROS production.


Assuntos
Angiotensina II/metabolismo , Miócitos Cardíacos/efeitos dos fármacos , Miócitos Cardíacos/metabolismo , Nelumbo/química , Extratos Vegetais/farmacologia , Angiotensina II/farmacologia , Animais , Biomarcadores , Linhagem Celular , Sobrevivência Celular/efeitos dos fármacos , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Hipertrofia , Miócitos Cardíacos/patologia , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/química , Proteína Quinase C/metabolismo , Ratos , Espécies Reativas de Oxigênio/metabolismo , Transdução de Sinais/efeitos dos fármacos
6.
J Neurochem ; 136(6): 1232-1245, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26710244

RESUMO

Alzheimer's disease (AD) is a chronic neurodegenerative disease and the risk of developing it increases with advancing age. In this study, we investigated the protective effects of saikosaponin C (SSc), one of the main bioactive components produced by the traditional Chinese herb, radix bupleuri, the root of Bupleurum falcatum, against AD in various neuronal models. Interestingly, we found that SSc has dual effects on AD by targeting amyloid beta (Aß) and tau, two key proteins in AD. SSc significantly suppressed the release of both Aß peptides 1-40 and 1-42 into cell culture supernatants, though it does not affect BACE1 activity and expression. SSc also inhibited abnormal tau phosphorylation at multiple AD-related residues. Moreover, SSc seems to have beneficial effects on cellular tau function; it accelerated nerve growth factor-mediated neurite outgrowth and increased the assembly of microtubules. In addition, SSc increased synaptic marker proteins such as synaptophysin and PSD-95. Considering its various biological activities, our results suggest that SSc might be a novel therapeutic tool for treating human AD and other neurodegenerative diseases. Tau and amyloid beta are two key features in Alzheimer's disease. Saikosaponin C, an active component of Bupleuri Radix, inhibits abnormal tau phosphorylation and amyloid beta production, thereby promoting synaptic integrity. Saikosaponin C also prevents amyloid beta-induced apoptosis in brain vascular endothelial cells. Therefore, Saikosaponin C may provide a new therapeutic strategy for treatment of neurodegenerative diseases, including Alzheimer's disease.

7.
Circ J ; 78(10): 2447-54, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25168278

RESUMO

BACKGROUND: High-dose statin loading is known to reduce periprocedural myocardial infarction and contrast-induced acute kidney injury in patients undergoing percutaneous coronary intervention. However, the clinical role of high-dose statin loading in patients with acute heart failure (AHF) remains unknown. METHODS AND RESULTS: In a prospective, single-center, randomized, controlled, open-label pilot study, patients hospitalized with AHF were randomly assigned to receive oral high-dose atorvastatin loading (80 mg for 3 days, followed by 10 mg/day until discharge) or no statin therapy, on top of optimal HF treatment. The primary outcome measures were changes to the level of biomarkers related to inflammation and renal injury from admission to hospital day 4. No significant changes in the levels of NT-proBNP (-2,627±4,956 vs. -2,981±6,951 pg/ml, P=0.845), hsCRP (-6.1±16.4 vs. -2.1±16.2 mg/L, P=0.105), cystatin C (0.002±0.185 vs. 0.009±0.216 mg/L, P=0.904), ACR (-886.3±1,984.9 vs. -165.6±825.2 mg/day, P=0.124) were observed in either group. In-hospital mortality (4.3% vs. 3.8%, P>0.999) and all-cause mortality at 90 days (4.3% vs. 3.8%, P>0.999) were not significantly different between groups. CONCLUSIONS: This pilot study showed that oral high-dose atorvastatin loading may be used safely in patients with AHF, but is not effective in reducing the levels of circulating biomarkers related to inflammation and renal injury during hospitalization.


Assuntos
Injúria Renal Aguda , Insuficiência Cardíaca , Ácidos Heptanoicos/administração & dosagem , Hospitalização , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Peptídeo Natriurético Encefálico/sangue , Fragmentos de Peptídeos/sangue , Pirróis/administração & dosagem , Injúria Renal Aguda/sangue , Injúria Renal Aguda/mortalidade , Administração Oral , Idoso , Idoso de 80 Anos ou mais , Atorvastatina , Biomarcadores/sangue , Feminino , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/complicações , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/mortalidade , Ácidos Heptanoicos/efeitos adversos , Mortalidade Hospitalar , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Estudos Prospectivos , Pirróis/efeitos adversos
8.
J Mol Med (Berl) ; 91(12): 1369-81, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24132651

RESUMO

UNLABELLED: Signaling of the receptor for advanced glycation end products (RAGE) has been implicated in the development of injury-elicited vascular complications. Soluble RAGE (sRAGE) acts as a decoy of RAGE and has been used to treat pathological vascular conditions in animal models. However, previous studies used a high dose of sRAGE produced in insect Sf9 cells (sRAGE(Sf9))and multiple injections to achieve the therapeutic outcome. Here, we explore whether modulation of sRAGE N-glycoform impacts its bioactivity and augments its therapeutic efficacy. We first profiled carbohydrate components of sRAGE produced in Chinese hamster Ovary cells (sRAGE(CHO)) to show that a majority of its N-glycans belong to sialylated complex types that are not shared by sRAGE(Sf9). In cell-based NF-κB activation and vascular smooth muscle cell (VSMC) migration assays, sRAGE(CHO) exhibited a significantly higher bioactivity relative to sRAGE(Sf9) to inhibit RAGE alarmin ligand-induced NF-κB activation and VSMC migration. We next studied whether this N-glycoform-associated bioactivity of sRAGE(CHO) is translated to higher in vivo therapeutic efficacy in a rat carotid artery balloon injury model. Consistent with the observed higher bioactivity in cell assays, sRAGE(CHO) significantly reduced injury-induced neointimal growth and the expression of inflammatory markers in injured vasculature. Specifically, a single dose of 3 ng/g of sRAGE(CHO) reduced neointimal hyperplasia by over 70%, whereas the same dose of sRAGE(Sf9) showed no effect. The administered sRAGE(CHO) is rapidly and specifically recruited to the injured arterial locus, suggesting that early intervention of arterial injury with sRAGE(CHO) may offset an inflammatory circuit and reduce the ensuing tissue remodeling. Our findings showed that the N-glycoform of sRAGE is the key determinant underlying its bioactivity and thus is an important glycobioengineering target to develop a highly potent therapeutic sRAGE for future clinical applications. KEY MESSAGE: The specific N-glycoform modification is the key underlying sRAGE bioactivity Markedly reduced sRAGE dose to attenuate neointimal hyperplasia and inflammation Provide a molecular target for glycobioengineering of sRAGE as a therapeutic protein Blocking RAGE alarmin ligands during acute injury phase offsets neointimal growth.


Assuntos
Artrite/metabolismo , Artrite/patologia , Neointima/metabolismo , Receptores Imunológicos/metabolismo , Animais , Artrite/tratamento farmacológico , Biomarcadores/metabolismo , Células CHO , Artérias Carótidas/efeitos dos fármacos , Artérias Carótidas/metabolismo , Artérias Carótidas/patologia , Movimento Celular/efeitos dos fármacos , Cricetinae , Cricetulus , Modelos Animais de Doenças , Ativação Enzimática/efeitos dos fármacos , Glicosilação , Humanos , Ligantes , Masculino , Músculo Liso Vascular/efeitos dos fármacos , Músculo Liso Vascular/metabolismo , NF-kappa B/metabolismo , Neointima/tratamento farmacológico , Ratos , Receptor para Produtos Finais de Glicação Avançada , Receptores Imunológicos/administração & dosagem , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/metabolismo , Células Sf9
9.
Hypertens Res ; 31(8): 1583-8, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18971533

RESUMO

The objective of this study was to examine the effects of nattokinase supplementation on blood pressure in subjects with pre-hypertension or stage 1 hypertension. In a randomized, double-blind, placebo-controlled trial, 86 participants ranging from 20 to 80 years of age with an initial untreated systolic blood pressure (SBP) of 130 to 159 mmHg received nattokinase (2,000 FU/capsule) or a placebo capsule for 8 weeks. Seventy-three subjects completed the protocol. Compared with the control group, the net changes in SBP and diastolic blood pressure (DBP) were -5.55 mmHg (95% confidence interval [CI], -10.5 to -0.57 mmHg; p<0.05) and -2.84 mmHg (CI, -5.33 to -0.33 mmHg; p<0.05), respectively, after the 8-week intervention. The corresponding net change in renin activity was -1.17 ng/mL/h for the nattokinase group compared with the control group (p<0.05). In conclusion, nattokinase supplementation resulted in a reduction in SBP and DBP. These findings suggest that increased intake of nattokinase may play an important role in preventing and treating hypertension.


Assuntos
Suplementos Nutricionais , Hipertensão/dietoterapia , Alimentos de Soja , Subtilisinas/administração & dosagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Pressão Sanguínea , Feminino , Humanos , Hipertensão/sangue , Masculino , Pessoa de Meia-Idade , Peptidil Dipeptidase A/sangue , Placebos , Renina/sangue , Resultado do Tratamento
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