Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 37
Filtrar
1.
J Clin Hypertens (Greenwich) ; 26(6): 635-644, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38751037

RESUMO

During our previous bilateral adrenal vein sampling (AVS) procedure, the authors observed that accessing the left adrenal vein through the antecubital vein was more feasible than the conventional femoral vein. Meanwhile, the femoral vein pathway facilitated access to the right adrenal vein than the antecubital vein pathway. Therefore, the authors hypothesized that simultaneous bilateral AVS via the antecubital combined with the femoral vein pathway could improve the success rate. A total of 94 cases of AVS via the antecubital combined with the femoral vein pathway were performed, while the remaining 20 cases employed the antecubital vein pathway at our center between August 2020 and April 2023. Furthermore, a meta-analysis was conducted in this study using 15 selected articles to determine the success rate of AVS in each center and pathway. The success rate of ACTH-stimulated simultaneous bilateral AVS via the antecubital vein combined with the femoral vein pathway was 92.85% (P = .503) on the right and 95.00% (P < .001) on the left. In the antecubital vein pathway, the success rates were only 25.00% (P < .001) on the right side and 80.00% (P = .289) on the left side. The results of meta-analysis demonstrated a success rate of 78.16% on the right and 94.98% on the left for ACTH-stimulated AVS via the femoral vein pathway. Based on our center's experience, simultaneous bilateral adrenal vein sampling via the combined pathway could improve the success rate of AVS in the short term and shorten the learning curve.


Assuntos
Glândulas Suprarrenais , Veia Femoral , Curva de Aprendizado , Humanos , Glândulas Suprarrenais/irrigação sanguínea , Masculino , Feminino , Pessoa de Meia-Idade , Adulto , Veias , Hormônio Adrenocorticotrópico/sangue , Coleta de Amostras Sanguíneas/métodos
3.
BMC Cardiovasc Disord ; 23(1): 457, 2023 09 14.
Artigo em Inglês | MEDLINE | ID: mdl-37710160

RESUMO

BACKGROUND: Intravascular ultrasound (IVUS) can provide detailed coronary anatomic parameters. The purpose of our study was to evaluate the parameters measured by IVUS for the prediction of intermediate coronary lesions function by referencing quantitative fraction ratio (QFR) ≤ 0.80 (vs. > 0.80). METHODS: Eighty four cases with 92 intermediate coronary lesions in vessels with a diameter ≥ 2.50 mm were enrolled. Paired assessment of IVUS and cQFR was available, and vessels with cQFR ≤ 0.8 were considered the positive reference standard. Logistic regression was used to select model variables by a maximum partial likelihood estimation test and receiver operating characteristic curve (ROC) analysis to evaluate the diagnostic value of different indices. RESULTS: Plaque burden (PB) and lesion length (LL) of IVUS were independent risk factors for the function of coronary lesions. The predictive probability P was derived from the combined PB and LL model. The area under the curve (AUC) of PB, (minimum lumen area) MLA, and LL and the predicted probability P are 0.789,0.732,0731, and 0.863, respectively (P < 0.01). The AUC of the predicted probability P was the biggest among them; the prediction accuracy of cQFR ≤ 0.8 was 84.8%, and the sensitivity of the diagnostic model was 0.826, specificity was 0. 725, and P < 0.01. CONCLUSION: PB and LL of IVUS were independent risk factors influencing the function of intermediate coronary lesions. The model combining the PB and LL may predict coronary artery function better than any other single parameter.


Assuntos
Vasos Coronários , Coração , Humanos , Vasos Coronários/diagnóstico por imagem , Ultrassonografia , Área Sob a Curva , Ultrassonografia de Intervenção
4.
Hypertens Res ; 45(5): 856-865, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35064249

RESUMO

The global coronavirus disease 2019 (COVID-19) pandemic has led to a health crisis. It remains unclear how anxiety affects blood pressure (BP) and cardiovascular risk among older patients with hypertension. In this study, we extracted longitudinal data on home BP monitored via a smartphone-based application in 3724 elderly patients with hypertension from a clinical trial (60-80 years; 240 in Wuhan and 3484 in non-Wuhan areas) to examine changes in morning BP during the COVID-19 outbreak in China. Anxiety was evaluated using Generalized Anxiety Disorder-7 item scores. Changes in morning systolic BP (SBP) were analyzed for five 30-day periods during the pandemic (October 21, 2019 to March 21, 2020), including the pre-epidemic, incubation, developing, outbreak, and plateau periods. Data on cardiovascular events were prospectively collected for one year. A total of 262 individuals (7.0%) reported an increased level of anxiety, and 3462 individuals (93.0%) did not. Patients with anxiety showed higher morning SBP than patients without anxiety, and the between-group differences in SBP change were +1.2 mmHg and +1.7 mmHg during the outbreak and plateau periods (P < 0.05), respectively. The seasonal BP variation in winter among patients with anxiety was suppressed during the pandemic. Anxious patients had higher rates of uncontrolled BP. During the 1-year follow-up period, patients with anxiety had an increased risk of cardiovascular events with a hazard ratio of 2.47 (95% confidence interval, 1.10-5.58; P = 0.03). In summary, COVID-19-related anxiety was associated with a short-term increase in morning SBP among older patients and led to a greater risk of cardiovascular events. (ClinicalTrials. gov number, NCT03015311).


Assuntos
COVID-19 , Hipertensão , Idoso , Idoso de 80 Anos ou mais , Ansiedade/epidemiologia , Transtornos de Ansiedade/epidemiologia , Pressão Sanguínea/fisiologia , Monitorização Ambulatorial da Pressão Arterial , Humanos , Hipertensão/complicações , Hipertensão/epidemiologia , Pessoa de Meia-Idade , Pandemias
5.
Arterioscler Thromb Vasc Biol ; 41(9): 2399-2416, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34289702

RESUMO

Objective: Vascular smooth muscle cell (VSMC) plasticity plays a critical role in the development of atherosclerosis. Long noncoding RNAs (lncRNAs) are emerging as important regulators in the vessel wall and impact cellular function through diverse interactors. However, the role of lncRNAs in regulating VSMCs plasticity and atherosclerosis remains unclear. Approach and Results: We identified a VSMC-enriched lncRNA cardiac mesoderm enhancer-associated noncoding RNA (CARMN) that is dynamically regulated with progression of atherosclerosis. In both mouse and human atherosclerotic plaques, CARMN colocalized with VSMCs and was expressed in the nucleus. Knockdown of CARMN using antisense oligonucleotides in Ldlr−/− mice significantly reduced atherosclerotic lesion formation by 38% and suppressed VSMCs proliferation by 45% without affecting apoptosis. In vitro CARMN gain- and loss-of-function studies verified effects on VSMC proliferation, migration, and differentiation. TGF-ß1 (transforming growth factor-beta) induced CARMN expression in a Smad2/3-dependent manner. CARMN regulated VSMC plasticity independent of the miR143/145 cluster, which is located in close proximity to the CARMN locus. Mechanistically, lncRNA pulldown in combination with mass spectrometry analysis showed that the nuclear-localized CARMN interacted with SRF (serum response factor) through a specific 600­1197 nucleotide domain. CARMN enhanced SRF occupancy on the promoter regions of its downstream VSMC targets. Finally, knockdown of SRF abolished the regulatory role of CARMN in VSMC plasticity. Conclusions: The lncRNA CARMN is a critical regulator of VSMC plasticity and atherosclerosis. These findings highlight the role of a lncRNA in SRF-dependent signaling and provide implications for a range of chronic vascular occlusive disease states.


Assuntos
Aterosclerose/metabolismo , Plasticidade Celular , Músculo Liso Vascular/metabolismo , Miócitos de Músculo Liso/metabolismo , RNA Longo não Codificante/metabolismo , Fator de Resposta Sérica/metabolismo , Animais , Aterosclerose/genética , Aterosclerose/patologia , Linhagem Celular , Movimento Celular , Proliferação de Células , Modelos Animais de Doenças , Humanos , Masculino , Camundongos Endogâmicos C57BL , Camundongos Knockout , Músculo Liso Vascular/patologia , Miócitos de Músculo Liso/patologia , Fenótipo , Placa Aterosclerótica , RNA Longo não Codificante/genética , Receptores de LDL/deficiência , Receptores de LDL/genética , Fator de Resposta Sérica/genética , Transdução de Sinais
6.
Atherosclerosis ; 317: 1-9, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33321327

RESUMO

BACKGROUND AND AIMS: During the development of atherosclerosis, nicotine activates macrophage inflammation. However, whether nicotine induces macrophage pyroptosis and the underlying mechanisms remain unclear. This study aimed to investigate the role of histone deacetylase 6 (HDAC6) in nicotine-induced macrophage pyroptosis. METHODS: For the in vivo study, nicotine was administered to 8-week-old ApoE-/- mice fed a high-fat diet (HFD) for 12 weeks. TUNEL/CD68 and Caspase-1/CD68 staining was used to assess macrophage pyroptosis in plaque. For the in vitro study, Western blotting, lactic dehydrogenase activity (LDH), coimmunoprecipitation, chromatin immunoprecipitation and immunofluorescence were used to evaluate pyroptosis and related signaling pathway in RAW264.7 cells. RESULTS: A high-fat diet and nicotine upregulated macrophage pyroptosis in atherosclerotic lesions. Nicotine promoted pyroptosis in RAW264.7 cells, as evidenced by increased expression of cleaved Caspase1, NLRP3, IL-1ß, IL-18, and elevated LDH release. Inhibition of HDAC6 suppressed nicotine-induced pyroptosis, which is partly mediated by p65 acetylation and NLRP3 transcription. Silencing p65 or NLRP3 resulted in decreased pyroptosis in RAW264.7 cells. CONCLUSIONS: Nicotine induces macrophage pyroptosis in atherosclerosis through HDAC6/NF-κB/NLRP3 signaling pathway.


Assuntos
Proteína 3 que Contém Domínio de Pirina da Família NLR , Piroptose , Animais , Desacetilase 6 de Histona , Inflamassomos , Macrófagos , Camundongos , NF-kappa B , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Nicotina/toxicidade , Espécies Reativas de Oxigênio
7.
Arterioscler Thromb Vasc Biol ; 40(9): 2054-2069, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32640907

RESUMO

OBJECTIVE: Increased CTSS (cathepsin S) has been reported to play a critical role in atherosclerosis progression. Both CTSS synthesis and secretion are essential for exerting its functions. However, the underlying mechanisms contributing to CTSS synthesis and secretion in atherosclerosis remain unclear. Approach and Results: In this study, we showed that nicotine activated autophagy and upregulated CTSS expression in vascular smooth muscle cells and in atherosclerotic plaques. Western blotting and immunofluorescent staining showed that nicotine inhibited the mTORC1 (mammalian target of rapamycin complex 1) activity, promoted the nuclear translocation of TFEB (transcription factor EB), and upregulated the expression of CTSS. Chromatin immunoprecipitation-qualificative polymerase chain reaction, electrophoretic mobility shift assay, and luciferase reporter assay further demonstrated that TFEB directly bound to the CTSS promoter. mTORC1 inhibition by nicotine or rapamycin promoted lysosomal exocytosis and CTSS secretion. Live cell assays and IP-MS (immunoprecipitation-mass spectrometry) identified that the interactions involving Rab10 (Rab10, member RAS oncogene family) and mTORC1 control CTSS secretion. Nicotine promoted vascular smooth muscle cell migration by upregulating CTSS, and CTSS inhibition suppressed nicotine-induced atherosclerosis in vivo. CONCLUSIONS: We concluded that nicotine mediates CTSS synthesis and secretion through regulating the autophagy-lysosomal machinery, which offers a potential therapeutic target for atherosclerosis treatment.


Assuntos
Aterosclerose/tratamento farmacológico , Autofagia/efeitos dos fármacos , Catepsinas/biossíntese , Lisossomos/efeitos dos fármacos , Músculo Liso Vascular/efeitos dos fármacos , Miócitos de Músculo Liso/efeitos dos fármacos , Nicotina/farmacologia , Animais , Aterosclerose/enzimologia , Aterosclerose/genética , Aterosclerose/patologia , Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/genética , Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/metabolismo , Catepsinas/genética , Linhagem Celular , Movimento Celular/efeitos dos fármacos , Modelos Animais de Doenças , Exocitose , Lisossomos/enzimologia , Lisossomos/ultraestrutura , Alvo Mecanístico do Complexo 1 de Rapamicina/metabolismo , Camundongos Knockout para ApoE , Músculo Liso Vascular/enzimologia , Músculo Liso Vascular/ultraestrutura , Miócitos de Músculo Liso/enzimologia , Miócitos de Músculo Liso/ultraestrutura , Via Secretória , Transdução de Sinais , Proteínas rab de Ligação ao GTP/genética , Proteínas rab de Ligação ao GTP/metabolismo
8.
J Clin Hypertens (Greenwich) ; 22(3): 378-383, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31891454

RESUMO

In China, automated blood pressure monitors have been readily available for home use. Home blood pressure monitoring has been indispensable in the management of hypertension. There is therefore a need to establish guidelines for home blood pressure monitoring on the basis of the 2012 consensus document. In this guidelines document, the committee put forward recommendations on the selection and calibration of blood pressure measuring devices, the frequency (times) and duration (days) of blood pressure measurement, and the diagnostic threshold of home blood pressure.


Assuntos
Monitorização Ambulatorial da Pressão Arterial , Hipertensão , Pressão Sanguínea , Determinação da Pressão Arterial , China/epidemiologia , Humanos , Hipertensão/diagnóstico , Esfigmomanômetros
9.
Aging (Albany NY) ; 11(19): 8120-8138, 2019 10 14.
Artigo em Inglês | MEDLINE | ID: mdl-31612866

RESUMO

During atherosclerosis development, nicotine and its α1 nicotinic acetylcholine receptors (nAChRα1) activate atherogenic inflammation. However, the effect of signal transducer and activator of transcription 3 (STAT3)-related inflammatory pathways in nicotine-induced atherosclerosis has been poorly studied. This study investigated the transcriptional mechanism of STAT3 in nicotine/nAChRα1-induced atherosclerosis. In vivo, ApoE-/- mice were used to establish an atherosclerotic model. Plaque area and composition were assessed by oil red O staining and immunohistochemistry. In vitro, vascular smooth muscle cells and macrophages were used to investigate cell migration, proliferation, inflammation and related signaling pathways by Transwell migration assay, EdU assay, immunofluorescence, western blotting, coimmunoprecipitation and chromatin immunoprecipitation. nAChRα1 knockdown significantly decreases the nicotine-induced upregulation of p-STAT3, p-Akt and p-mTOR in vitro, while nAChRα1 overexpression has the opposite effects. The inhibition of STAT3 attenuated nicotine-induced atherosclerosis, by reducing the proliferation and migration of vascular smooth muscle cells and inflammation in macrophages. Moreover, there is a direct interaction between STAT3 and nAChRα1 that modulates STAT3 nuclear translocation and its binding to the Akt promoter region upon nicotine exposure. Taken together, STAT3 and nAChRα1 blockade attenuates nicotine-induced atherosclerosis by reducing the migration and proliferation of vascular smooth muscle cells and inflammation in macrophages via the Akt/mTOR pathway.


Assuntos
Aterosclerose/induzido quimicamente , Nicotina/toxicidade , Proteínas Proto-Oncogênicas c-akt/metabolismo , Receptores Nicotínicos/metabolismo , Fator de Transcrição STAT3/metabolismo , Animais , Proliferação de Células/efeitos dos fármacos , Regulação da Expressão Gênica/efeitos dos fármacos , Masculino , Camundongos , Camundongos Knockout para ApoE , Músculo Liso Vascular/citologia , Miócitos de Músculo Liso/efeitos dos fármacos , Miócitos de Músculo Liso/metabolismo , Proteínas Proto-Oncogênicas c-akt/genética , Células RAW 264.7 , Receptores Nicotínicos/genética , Fator de Transcrição STAT3/genética , Serina-Treonina Quinases TOR
10.
Curr Ther Res Clin Exp ; 90: 99-105, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31388362

RESUMO

BACKGROUND: Amlodipine (AML) is the initial therapy most commonly prescribed for patients with hypertension in China. However, AML monotherapy is often less effective in achieving blood pressure (BP) control than other agents. OBJECTIVE: We performed a clinical study to evaluate efficacy and safety of a combination therapy with AML, olmesartan (OLM), or an OLM/hydrochlorothiazide (HCTZ) compound for Chinese patients with mild-to-moderate hypertension. METHODS: In the clinical trial, patients were initially treated with OLM 20 mg/d combined with AML 5 mg/d. Then OLM was uptitrated to 40 mg/d or changed to an OLM/HCTZ (20/12.5 mg/d) compound if the patients did not reach the target of seated diastolic BP <90 mm Hg (<80 mm Hg in patients with diabetes) after 8 weeks. RESULTS: The overall response rate of the combination therapy was 59.2% (95% CI, 54.23%-63.97%) at Week 2 and gradually increased to 97.1% (95% CI, 94.93%-98.47%) at the end of the study (Week 16). CONCLUSIONS: The combination therapy with OLM or OLM/HCTZ was well tolerated. The total incidence of adverse events was 42.9% (n = 176). Most of the adverse events were mild in severity (39.5%; n = 162) and not associated with the drugs (33.2%). In conclusion, combination therapy with AML, OLM, or OLM/HCTZ can significantly lower BP safely and achieve a high BP control rate in patients with mild-to-moderate hypertension in China. ClinicalTrial.org identifier: ChiCTR-ONC-12001963.

12.
J Cell Physiol ; 234(9): 14507-14518, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30585623

RESUMO

α1 Nicotinic acetylcholine receptor (α1nAChR) is an important nicotine receptor that is widely distributed in vascular smooth muscle cells, macrophages, and endothelial cells. However, the role of α1nAChR in nicotine-mediated atherosclerosis remains unclear. The administration of nicotine for 12 weeks increased the area of the atherosclerotic lesion, the number of macrophages infiltrating the plaques, and the circulating levels of inflammatory cytokines, such as interleukin-6 and tumor necrosis factor-α, in apolipoprotein E-deficient (ApoE-/- ) mice fed a high-fat diet. Nicotine also increased α1nAChR, calpain-1, matrix metalloproteinase-2 (MMP-2), and MMP-9 expression in the aortic tissue. Silencing of α1nAChR with an adenoassociated virus decreased the atherosclerotic size, lesion macrophage content, and circulating levels of inflammatory cytokines and suppressed α1nAChR, calpain-1, MMP-2, and MMP-9 expression in the nicotine group. In vitro, nicotine-induced α1nAChR, calpain-1, MMP-2, and MMP-9 expression in mouse vascular smooth muscle cells (MOVAS) and macrophages (RAW264.7), and enhanced the migration and proliferation of these cells. The silencing of α1nAChR inhibited these effects of nicotine MOVAS and RAW264.7 cells. Thus, we concluded that nicotine promoted the development of atherosclerosis partially by inducing the migration and proliferation of vascular smooth muscle cells and macrophages and inducing an inflammatory reaction. The effect of nicotine on atherogenesis may be mediated by α1nAChR-induced activation of the calpain-1/MMP-2/MMP-9 signaling pathway.

13.
J Atheroscler Thromb ; 25(2): 111-123, 2018 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-28978867

RESUMO

Atherosclerotic cardiovascular disease (ASCVD) is an inflammatory disease characterized by extensive arterial wall matrix protein degradation. Cysteine protease cathepsins play a pivotal role in extracellular matrix (ECM) remodeling and have been implicated in the development and progression of atherosclerosis-based cardiovascular diseases. An imbalance in expression between cathepsins (such as cathepsins S, K, L, C) and their inhibitor cystatin C may favor proteolysis of ECM in the pathogenesis of cardiovascular disease such as atherosclerosis, aneurysm formation, restenosis, and neovascularization. New insights into cathepsin functions have been made possible by the generation of knockout mice and by the application of specific inhibitors. Inflammatory cytokines regulate the expression and activities of cathepsins in cultured vascular cells and macrophages. In addition, evaluations of the possibility of cathepsins as a diagnostic tool revealed that the circulating levels of cathepsin S, K, and L, and their endogenous inhibitor cystatin C could be promising biomarkers in the diagnosis of coronary artery disease, aneurysm, adiposity, peripheral arterial disease, and coronary artery calcification. In this review, we summarize the available information regarding the mechanistic contributions of cathepsins to ASCVD.


Assuntos
Aterosclerose/fisiopatologia , Doenças Cardiovasculares/fisiopatologia , Catepsinas/metabolismo , Animais , Aterosclerose/enzimologia , Doenças Cardiovasculares/enzimologia , Humanos
14.
Blood Press Monit ; 22(5): 290-294, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28505014

RESUMO

OBJECTIVE: The aim of this study was to validate the accuracy of the Accutension XYZ-110 blood pressure (BP) kit according to the American National Standards Institute/Association for the Advancement of Medical Instrumentation/International Organization for Standardization (ANSI/AAMI/ISO) 81060-2:2013 standard. PARTICIPANTS AND METHODS: Systolic blood pressure (SBP) and diastolic blood pressure (DBP) were measured simultaneously on the same arm in 85 Chinese adults (female : male=48 : 37) with a mean age of 43.2 years using the mercury sphygmomanometer (two observers) and the Accutension XYZ-110 device (one supervisor). The ANSI/AAMI/ISO 81060-2:2013 standard for the validation of BP-measuring devices in adults was followed precisely. A total of 255 comparison pairs were obtained for analysis. RESULTS: The mean device-observer difference in the 255 separate BP data pairs was 2.45±2.24 mmHg for SBP and 0.69±2.09 mmHg for DBP. The data were in accordance with the criterion 1 of the ANSI/AAMI/ISO 81060-2:2013 standard requirements (≤5±8 mmHg). In addition, the mean device-observer difference of the 85 participants was 2.45±1.47 mmHg for SBP and 0.69±1.36 mmHg for DBP. The device accuracy also fulfilled the criterion 2 with the SD of less than or equal to 6.47 for SBP and less than or equal to 6.90 mmHg for DBP. CONCLUSION: The Accutension XYZ-110 BP kit fulfilled the requirements of the ANSI/AAMI/ISO 81060-2:2013 standard, and hence could be recommended for both clinical and self/home BP measurement in adults.


Assuntos
Determinação da Pressão Arterial/instrumentação , Pressão Sanguínea , Smartphone , Esfigmomanômetros/normas , Adulto , Feminino , Humanos , Masculino
15.
Mediators Inflamm ; 2017: 2401027, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29348704

RESUMO

Vagus nerve stimulation through alpha7 nicotine acetylcholine receptors (α7-nAChR) signaling had been demonstrated attenuation of inflammation. This study aimed to determine whether PNU-282987, a selective α7-nAChR agonist, affected activities of matrix metalloproteinase (MMP) and inflammatory cytokines in nicotine-treatment RAW264.7 and MOVAS cells and to assess the underlying molecular mechanisms. RAW264.7 and MOVAS cells were treated with nicotine at different concentrations (0, 1, 10, and 100 ng/ml) for 0-120 min. Nicotine markedly stimulated the phosphorylation of extracellular signal-regulated kinase1/2 (ERK1/2) and c-Jun in RAW264.7 cells. Pretreatment with U0126 significantly suppressed phosphorylation of ERK1/2 and further attenuated nicotine-induced activation of c-Jun and upregulation of MMP-2, MMP-9, monocyte chemotactic protein- (MCP-) 1, and regulated upon activation normal T cell expressed and secreted (RANTES). Similarly, nicotine treatment also increased phosphorylation of c-Jun and expressions of MMP-2, MMP-9, MCP-1, and RANTES in MOVAS cells. When cells were pretreated with PNU-282987, nicotine-induced activations of ERK1/2 and c-Jun in RAW264.7 cells and c-Jun in MOVAS cells were effectively inhibited. Furthermore, nicotine-induced secretions of MMP-2, MMP-9, MCP-1, and RANTES were remarkably downregulated. Treatment with α7-nAChR agonist inhibits nicotine-induced upregulation of MMP and inflammatory cytokines through modulating ERK1/2/AP-1 signaling in RAW264.7 cells and AP-1 in MOVAS cells, providing a new therapeutic for abdominal aortic aneurysm.


Assuntos
Quimiocina CCL2/genética , Quimiocina CCL5/genética , MAP Quinases Reguladas por Sinal Extracelular/fisiologia , Metaloproteinases da Matriz/genética , Nicotina/farmacologia , Transdução de Sinais/fisiologia , Fator de Transcrição AP-1/fisiologia , Receptor Nicotínico de Acetilcolina alfa7/fisiologia , Animais , Benzamidas/farmacologia , Compostos Bicíclicos com Pontes/farmacologia , Butadienos/farmacologia , Proteínas Quinases JNK Ativadas por Mitógeno/metabolismo , Sistema de Sinalização das MAP Quinases/fisiologia , Camundongos , Nitrilas/farmacologia , Fosforilação , Células RAW 264.7 , Regulação para Cima/fisiologia , Receptor Nicotínico de Acetilcolina alfa7/agonistas
16.
Curr Med Res Opin ; 32(sup2): 43-52, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27779454

RESUMO

OBJECTIVE: The objective of this study was to compare the effectiveness of lercanidipine with felodipine in patients with mild-to-moderate hypertension on day-to-day home blood pressure variability. METHODS: This is a sub-study of a multicenter, randomized, open-label, parallel group and active controlled clinical trial. Hypertensive patients aged 18-75 (i.e. diastolic blood pressure ≥90 mmHg and <110 mmHg; systolic blood pressure ≥140 mmHg and <180 mmHg) and 24 h mean BP >130/80 mmHg) were eligible for this study. During the study, blood pressure (BP) and heart rate (HR) were recorded. The day-to-day BP variability (BPV) and HR variability (HRV) were obtained by the standard deviation (SD) of daily BP/HR average (of six readings) in 7 days. RESULTS: There were 186 patients (89 and 97 patients in the lercanidipine and felodipine groups, respectively) included in this study. Lercanidipine hydrochloride 10 mg/d and felodipine sustained-release tablets 5 mg/d were given to their respective groups. After 6 weeks of treatment, SD of home BP significantly reduced compared with baseline in both groups (P < .05) while SD of home HR also changed significantly after treatment (P < .05). There was no significant difference in SD of home BPV between the lercanidipine and felodipine groups after treatment. CONCLUSION: Treatment with lercanidipine and felodipine both resulted in reduction of BPV and HRV. There was no significant inter-group difference in reduction of BPV between the groups. Lercanidipine is an effective antihypertensive drug in improving BPV. National clinical trial: NCT01520285.


Assuntos
Anti-Hipertensivos/uso terapêutico , Pressão Sanguínea/efeitos dos fármacos , Di-Hidropiridinas/uso terapêutico , Felodipino/uso terapêutico , Hipertensão/tratamento farmacológico , Adulto , Idoso , Monitorização Ambulatorial da Pressão Arterial , Preparações de Ação Retardada/uso terapêutico , Feminino , Frequência Cardíaca/efeitos dos fármacos , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
17.
Mediators Inflamm ; 2016: 9142425, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27688602

RESUMO

Nicotine, a major chemical component of cigarettes, plays a pivotal role in the development of abdominal aortic aneurysm (AAA). c-Jun N-terminal kinase (JNK) has been demonstrated to participate in elastase-induced AAA. This study aimed to elucidate whether the JNK inhibitor SP600125 can attenuate nicotine plus angiotensin II- (AngII-) induced AAA formation and to assess the underlying molecular mechanisms. SP600125 significantly attenuated nicotine plus AngII-induced AAA formation. The expression of matrix metalloproteinase- (MMP-) 2, MMP-9, monocyte chemoattractant protein- (MCP-) 1, and regulated-on-activation, normal T-cells expressed and secreted (RANTES) was significantly upregulated in aortic aneurysm lesions but inhibited by SP600125. In vitro, nicotine induced the expression of MCP-1 and RANTES in both RAW264.7 (mouse macrophage) and MOVAS (mouse vascular smooth muscle) cells in a dose-dependent manner; expression was upregulated by 0.5 ng/mL nicotine but strongly downregulated by 500 ng/mL nicotine. SP600125 attenuated the upregulation of MCP-1 and RANTES expression and subsequent macrophage migration. In conclusion, SP600125 attenuates nicotine plus AngII-induced AAA formation likely by inhibiting MMP-2, MMP-9, MCP-1, and RANTES. The expression of chemokines in MOVAS cells induced by nicotine has an effect on RAW264.7 migration, which is likely to contribute to the development of nicotine-related AAA.

18.
Arterioscler Thromb Vasc Biol ; 36(8): 1549-57, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27365406

RESUMO

OBJECTIVE: Cathepsin S (CatS) participates in atherogenesis through several putative mechanisms. The ability of cathepsins to modify histone tail is likely to contribute to stem cell development. Histone deacetylase 6 (HDAC6) is required in modulating the proliferation and migration of various types of cancer cells. Here, we investigated the cross talk between CatS and HADC6 in injury-related vascular repair in mice. APPROACH AND RESULTS: Ligation injury to the carotid artery in mice increased the CatS expression, and CatS-deficient mice showed reduced neointimal formation in injured arteries. CatS deficiency decreased the phosphorylation levels of p38 mitogen-activated protein kinase, Akt, and HDAC6 and toll-like receptor 2 expression in ligated arteries. The genetic or pharmacological inhibition of CatS also alleviated the increased phosphorylation of p38 mitogen-activated protein kinase, Akt, and HDAC6 induced by platelet-derived growth factor BB in cultured vascular smooth muscle cells (VSMCs), and p38 mitogen-activated protein kinase inhibition and Akt inhibition decreased the phospho-HDAC6 levels. Moreover, CatS inhibition caused decrease in the levels of the HDAC6 activity in VSMCs in response to platelet-derived growth factor BB. The HDAC6 inhibitor tubastatin A downregulated platelet-derived growth factor-induced VSMC proliferation and migration, whereas HDAC6 overexpression exerted the opposite effect. Tubastatin A also decreased the intimal VSMC proliferation and neointimal hyperplasia in response to injury. Toll-like receptor 2 silencing decreased the phosphorylation levels of p38 mitogen-activated protein kinase, Akt, and HDAC6 and VSMC migration and proliferation. CONCLUSIONS: This is the first report detailing cross-interaction between toll-like receptor 2-mediated CatS and HDAC6 during injury-related vascular repair. These data suggest that CatS/HDAC6 could be a potential therapeutic target for the control of vascular diseases that are involved in neointimal lesion formation.


Assuntos
Lesões das Artérias Carótidas/enzimologia , Artéria Carótida Primitiva/enzimologia , Catepsinas/metabolismo , Histona Desacetilases/metabolismo , Fosfatidilinositol 3-Quinase/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Receptor 2 Toll-Like/metabolismo , Cicatrização , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo , Animais , Lesões das Artérias Carótidas/genética , Lesões das Artérias Carótidas/patologia , Artéria Carótida Primitiva/efeitos dos fármacos , Artéria Carótida Primitiva/patologia , Catepsinas/antagonistas & inibidores , Catepsinas/deficiência , Catepsinas/genética , Pontos de Checagem do Ciclo Celular , Movimento Celular , Proliferação de Células , Células Cultivadas , Modelos Animais de Doenças , Genótipo , Desacetilase 6 de Histona , Inibidores de Histona Desacetilases/farmacologia , Histona Desacetilases/genética , Masculino , Camundongos Knockout , Músculo Liso Vascular/enzimologia , Músculo Liso Vascular/patologia , Miócitos de Músculo Liso/enzimologia , Miócitos de Músculo Liso/patologia , Neointima , Fenótipo , Fosforilação , Inibidores de Proteases/farmacologia , Interferência de RNA , Transdução de Sinais , Receptor 2 Toll-Like/genética , Transfecção , Remodelação Vascular , Cicatrização/efeitos dos fármacos
19.
J Clin Hypertens (Greenwich) ; 18(2): 153-8, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26278919

RESUMO

This study aimed to analyze the effect of continuous positive airway pressure (CPAP) on blood pressure (BP) in patients with obstructive sleep apnea (OSA) and resistant hypertension. Randomized controlled trials (RCTs) that evaluated the effect of CPAP on BP in patients with OSA and resistant hypertension, indexed in MEDLINE, Embase, and the Cochrane Library from inception until March 20, 2015, were included in the meta-analysis. A total of five RCTs were identified to meet the inclusion criteria. The pooled changes after CPAP treatment for 24-hour ambulatory systolic BP and diastolic BP (DBP) were -4.78 mm Hg (95% confidence interval [CI], -7.95 to -1.61) and -2.95 mm Hg (95% CI, -5.37 to -0.53) in favor of the CPAP group. CPAP was also associated with reduction in nocturnal DBP (mean difference, -1.53 mm Hg, 95% CI, -3.07 to 0). The results indicated a favorable reduction in BP with CPAP treatment in patients with OSA and resistant hypertension.


Assuntos
Pressão Positiva Contínua nas Vias Aéreas/métodos , Hipertensão , Hipoglicemiantes/uso terapêutico , Apneia Obstrutiva do Sono , Resistência a Medicamentos , Humanos , Hipertensão/complicações , Hipertensão/terapia , Avaliação de Processos e Resultados em Cuidados de Saúde , Ensaios Clínicos Controlados Aleatórios como Assunto , Apneia Obstrutiva do Sono/complicações , Apneia Obstrutiva do Sono/terapia
20.
Curr Med Res Opin ; 31(1): 171-6, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25425015

RESUMO

OBJECTIVE: Lercanidipine hydrochloride and felodipine sustained-release tablets comparison for the treatment of patients with mild-to-moderate primary hypertension. RESEARCH DESIGN AND METHODS: The study was designed as a multicenter, randomized, open-label, parallel-group clinical trial. A total of 281 adult patients (18-75 years) with a mild-to-moderate primary hypertension diagnosis were randomly assigned, in a 1:1 ratio, to lercanidipine hydrochloride (n = 139; 81 males) or felodipine sustained-release tablets (n = 142; 87 males). Study duration was 8 weeks, including two run-in weeks and 6 weeks of treatment. MAIN OUTCOME MEASURES: The mean seated diastolic blood pressure (BP) change from baseline to 6 weeks of treatment was the primary endpoint. Main secondary efficacy parameters were: (i) mean seated systolic BP change from baseline to 6 weeks of treatment; (ii) normalization BP rate. The incidence of adverse events was also considered. RESULTS: BP monitoring showed a significant decrease compared with baseline in diastolic BP (lercanidipine: from 96 ± 4 to 83 ± 6 mmHg, p < 0.0001; felodipine: from 96 ± 4 to 82 ± 5 mmHg, p < 0.0001). The mean systolic BP decreased, when compared with baseline values, by 18 mmHg and 19 mmHg in the lercanidipine and felodipine arm, respectively (p < 0.0001 versus baseline for both comparisons). The normalization rates of BP were 79.5% and 87.2%, in the lercanidipine and felodipine groups, respectively (in-office monitoring; p = n.s.). In total, 73 patients experienced 103 AEs: 26.6% (37/139) in the lercanidipine group and 25.3% (36/142) in the felodipine arm (p = n.s.). The analysis of safety showed no unexpected adverse events. CONCLUSIONS: Although the overall short follow-up of the present study should be taken into account, lercanidipine is an effective and safe treatment option for BP control in adult patients with mild-to-moderate primary hypertension.


Assuntos
Anti-Hipertensivos/uso terapêutico , Di-Hidropiridinas/uso terapêutico , Felodipino/uso terapêutico , Hipertensão/tratamento farmacológico , Adolescente , Adulto , Idoso , Preparações de Ação Retardada , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA