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1.
BMC Oral Health ; 23(1): 1014, 2023 12 19.
Artigo em Inglês | MEDLINE | ID: mdl-38110929

RESUMO

BACKGROUND: Recurrent aphthous stomatitis has a complex and inflammatory origin. Among the great variety of medications it is increasingly common to use herbal medicines due to the adverse side effects of chemical medications. Considering the anti-inflammatory properties of cinnamaldehyde and the lack of studies related to the effectiveness of its nano form; This study investigates the effect of cinnamaldehyde and nano cinnamaldehyde on the healing rate of recurrent aphthous stomatitis lesions. METHODS: In a laboratory experiment, cinnamaldehyde was converted into niosomal nanoparticles. The niosome vesicles diameter and polydispersity index were measured at 25°C using a dynamic light scattering (DLS) Mastersizer 2000 (Malvern Panalytical technologies: UK) and Zetasizer Nano ZS system (Malvern Instruments Worcestershire: UK). After characterizing these particles, the (2,3-Bis-(2-Methoxy-4-Nitro-5-Sulfophenyl)-2H-Tetrazolium-5-Carboxanilide) [XTT] assay was used to assess the toxicity of cinnamaldehyde and nano cinnamaldehyde on gingival fibroblast (HGF) and macrophage (THP-1) cells. By determining the release of TNF-α, IL-6, and TGF-ß cytokines using ELISA kits, the level of tissue repair and anti-inflammatory capabilities of these two substances were evaluated. RESULTS: The size and loading rate of the cinnamaldehyde nanoparticles were established after its creation. The optimized nanovesicle exhibited the following characteristics: particle size of 228.75 ± 2.38 nm, PDI of 0.244 ± 0.01, the zeta potential of -10.87 ± 1.09 mV and the drug encapsulation percentage of 66.72 ± 3.93%. PDIs range was between 0.242-0.274. The zeta potential values at 25°C were from -2.67 to -12.9 mV. The results of the XTT test demonstrated that nano cinnamaldehyde exhibited dose-dependent toxicity effects. Moreover, nano cinnamaldehyde released more TGF-ß and had better reparative effects when taken at lower concentrations than cinnamaldehyde. CONCLUSION: Nano cinnamaldehyde and cinnamaldehyde are effective in repairing tissue when used in non-toxic amounts. After confirmation in animal models, it is envisaged that these substances can be utilized to treat recurrent aphthous stomatitis.


Assuntos
Estomatite Aftosa , Animais , Macrófagos , Anti-Inflamatórios/farmacologia , Fibroblastos , Fator de Crescimento Transformador beta/farmacologia
2.
Immunol Cell Biol ; 99(2): 192-205, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32864784

RESUMO

The coronavirus disease 2019 (COVID-19) pandemic has affected the daily lives of millions of people worldwide and had caused significant mortality; hence, the assessment of therapeutic options is of great interest. The leading cause of death among COVID-19 patients is acute respiratory distress syndrome caused by hyperinflammation secondary to cytokine release syndrome (CRS). Cytokines, such as tumor necrosis factor-α, interleukin-6, interferon-γ and interleukin-10, are the main mediators of CRS. Based on recent evidence, the angiotensin-converting enzyme (ACE) II is known to be the target of the COVID-19 spike protein, which enables the virus to penetrate human cells. ACE II also possesses an anti-inflammatory role in many pathologies such as cardiovascular disease, hypertension, diabetes mellitus and other conditions, which are the main risk factors of poor prognosis in COVID-19 infection. Changes in tissue ACE II levels are associated with many diseases and hyperinflammatory states, and it is assumed that elevated levels of ACE II could aggravate the course of COVID-19 infection. Therefore, the use of renin-angiotensin-aldosterone system inhibitors (RASis) in COVID-19 patients could be hypothetically considered, though sufficient evidence is not presented by the scientific community. In this work, based on the most recent pieces of evidence, the roles of RAS and RASi in immunologic interactions are addressed. Furthermore, the molecular and immunologic aspects of RASi and their potential significance in COVID-19 are discussed.


Assuntos
Enzima de Conversão de Angiotensina 2/fisiologia , COVID-19 , SARS-CoV-2/fisiologia , Internalização do Vírus , Antagonistas de Receptores de Angiotensina/uso terapêutico , Enzima de Conversão de Angiotensina 2/antagonistas & inibidores , Enzima de Conversão de Angiotensina 2/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Animais , COVID-19/imunologia , COVID-19/patologia , COVID-19/virologia , Humanos , Sistema Imunitário/metabolismo , Sistema Imunitário/patologia , Sistema Renina-Angiotensina/efeitos dos fármacos , Sistema Renina-Angiotensina/fisiologia , SARS-CoV-2/efeitos dos fármacos , SARS-CoV-2/metabolismo , Glicoproteína da Espícula de Coronavírus/metabolismo , Internalização do Vírus/efeitos dos fármacos
3.
BMC Oral Health ; 20(1): 212, 2020 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-32723352

RESUMO

BACKGROUND: Recurrent aphthous stomatitis (RAS) is a common lesion that affects the oral mucosa. There are several methods to treat RAS, including systemic and topical formulations. This study was conducted to evaluate the anti-inflammatory effect of topical zinc sulfate and its efficacy in the treatment of RAS. METHODS: A double-blind randomized clinical trial was conducted on 46 patients with RAS. They were randomly assigned into two groups to receive a zinc sulfate mucoadhesive tablet or placebo for 7 days. The pain severity was measured at baseline and daily while the diameter of the lesion was measured at baseline and on days 3, 5, and 7. The obtained data were analyzed in SPSS V.16. RESULTS: There was no significant difference in the mean diameter of lesions and pain at baseline between the two groups (P = 0.643 and P = 0.842, respectively). However, on the third, fifth, and seventh days of the study, the diameter of the lesion significantly reduced in the intervention group (P = 0.001) and the pain intensity became significantly different between groups from the fourth day of the study (P = 0.001). CONCLUSION: Zinc sulfate mucoadhesive tablet was effective in recovery and reducing the pain and diameter of the aphthous lesion and could be considered for the treatment of RAS. TRIAL REGISTRATION: Evaluation of the effectiveness of zinc sulfate mucoadhesive tablet in the improvement of recurrent aphthous stomatitis (RAS), IRCT20151109024975N9. Registered August 1, 2018, https://en.irct.ir/trial/32423 . This project was registered by the Iranian Registry of Clinical Trials ( http://www.irct.ir ). The IRCT ID was IRCT20151109024975N9.


Assuntos
Estomatite Aftosa , Sulfato de Zinco , Método Duplo-Cego , Humanos , Irã (Geográfico) , Estomatite Aftosa/tratamento farmacológico , Resultado do Tratamento , Sulfato de Zinco/uso terapêutico
4.
Cell Immunol ; 345: 103963, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31445668

RESUMO

Cancer immunotherapy aims to enhance the immune system reactivity against tumour cells. Chimeric Antigen Receptor (CAR), presented on the surface of the T cells, specifically redirects the cell and demonstrates significant promises in treating patients with different types of haematologic malignancies. Although several cases of improvement have been reported, clinical experiences, such as excessive activity, poor control, toxicity and limited life span of conventional CAR T cells have emerged as treatment challenges associated with this therapeutic strategy. Recently, multiple switchable CAR T platforms have been made to enable better control in a dose-dependent manner, which is correlated to distinct characteristics of different switch molecules. This review aimed at a brief represention of toxicities of the CAR T cells, the obstacles facing tumour treatments especially in solid tumours, and finally providing a framework for classification of the newly developed Conjugated/Split CAR-T cell technologies to overcome difficulties. Overall, Newly developed Conjugated CAR T cells using among with soluble switch molecules seems to be as responsive as the conventional CAR T cells, yet providing many new useful options to effectively overcome limitations and significantly improve patient safety.


Assuntos
Imunoterapia Adotiva/métodos , Neoplasias/terapia , Receptores de Antígenos de Linfócitos T/imunologia , Receptores de Antígenos Quiméricos/imunologia , Neoplasias Hematológicas/imunologia , Neoplasias Hematológicas/terapia , Humanos , Imunoterapia/métodos , Imunoterapia/tendências , Imunoterapia Adotiva/tendências , Neoplasias/imunologia , Neoplasias/metabolismo , Receptores de Antígenos de Linfócitos T/metabolismo , Receptores de Antígenos Quiméricos/metabolismo , Linfócitos T/imunologia , Linfócitos T/metabolismo
6.
Circulation ; 131(9): 774-85, 2015 Mar 03.
Artigo em Inglês | MEDLINE | ID: mdl-25573147

RESUMO

BACKGROUND: High-throughput profiling of circulating metabolites may improve cardiovascular risk prediction over established risk factors. METHODS AND RESULTS: We applied quantitative nuclear magnetic resonance metabolomics to identify the biomarkers for incident cardiovascular disease during long-term follow-up. Biomarker discovery was conducted in the National Finnish FINRISK study (n=7256; 800 events). Replication and incremental risk prediction was assessed in the Southall and Brent Revisited (SABRE) study (n=2622; 573 events) and British Women's Health and Heart Study (n=3563; 368 events). In targeted analyses of 68 lipids and metabolites, 33 measures were associated with incident cardiovascular events at P<0.0007 after adjusting for age, sex, blood pressure, smoking, diabetes mellitus, and medication. When further adjusting for routine lipids, 4 metabolites were associated with future cardiovascular events in meta-analyses: higher serum phenylalanine (hazard ratio per standard deviation, 1.18; 95% confidence interval, 1.12-1.24; P=4×10(-10)) and monounsaturated fatty acid levels (1.17; 1.11-1.24; P=1×10(-8)) were associated with increased cardiovascular risk, while higher omega-6 fatty acids (0.89; 0.84-0.94; P=6×10(-5)) and docosahexaenoic acid levels (0.90; 0.86-0.95; P=5×10(-5)) were associated with lower risk. A risk score incorporating these 4 biomarkers was derived in FINRISK. Risk prediction estimates were more accurate in the 2 validation cohorts (relative integrated discrimination improvement, 8.8% and 4.3%), albeit discrimination was not enhanced. Risk classification was particularly improved for persons in the 5% to 10% risk range (net reclassification, 27.1% and 15.5%). Biomarker associations were further corroborated with mass spectrometry in FINRISK (n=671) and the Framingham Offspring Study (n=2289). CONCLUSIONS: Metabolite profiling in large prospective cohorts identified phenylalanine, monounsaturated fatty acids, and polyunsaturated fatty acids as biomarkers for cardiovascular risk. This study substantiates the value of high-throughput metabolomics for biomarker discovery and improved risk assessment.


Assuntos
Doenças Cardiovasculares/epidemiologia , Ácidos Docosa-Hexaenoicos/sangue , Endofenótipos/sangue , Ácidos Graxos Monoinsaturados/sangue , Ácidos Graxos Ômega-6/sangue , Ensaios de Triagem em Larga Escala/métodos , Metabolômica/métodos , Fenilalanina/sangue , Adolescente , Adulto , Distribuição por Idade , Idoso , Biomarcadores/sangue , Pressão Sanguínea , Fármacos Cardiovasculares/uso terapêutico , Doenças Cardiovasculares/sangue , Criança , Comorbidade , Diabetes Mellitus/sangue , Diabetes Mellitus/epidemiologia , Feminino , Finlândia/epidemiologia , Inquéritos Epidemiológicos , Humanos , Masculino , Espectrometria de Massas , Pessoa de Meia-Idade , Ressonância Magnética Nuclear Biomolecular , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Distribuição por Sexo , Fumar/sangue , Fumar/epidemiologia , Reino Unido/epidemiologia , Estados Unidos/epidemiologia , Adulto Jovem
7.
Eur Heart J ; 35(42): 2972-9, 2014 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-24742886

RESUMO

OBJECTIVE: To examine the relation of endothelial microparticles (EMPs) with cardiometabolic risk in the community. BACKGROUND: Circulating EMPs are small membrane vesicles released after endothelial cell injury. Endothelial microparticles are reportedly increased among individuals with a high burden of cardiovascular risk factors. However, prior investigations have been limited to small, highly selected samples. METHODS: We studied 844 individuals without a history of cardiovascular disease in the Framingham Offspring cohort (mean age 66 ± 9 years, 57% women). We used standardized flow cytometry methods to identify and quantify circulating CD144+ and CD31+/CD41- EMPs. We then used multivariable regression analyses to investigate the relations of EMP phenotypes with cardiovascular and metabolic risk factors. RESULTS: In multivariable analyses, the following cardiovascular risk factors were associated with one or more of the circulating EMP populations: hypertension (P = 0.025 for CD144+,), elevated triglycerides (P = 0.002 for CD144+, P < 0.0001 for CD31+/CD41-), and metabolic syndrome (P < 0.0001 for CD144+,). Overall, each tertile increase in the Framingham risk score corresponded to a 9% increase in log-CD31+/CD41- EMPs (P = 0.022). Furthermore, the presence of hypertriglyceridaemic waist status was associated with 38% higher levels of CD144+ EMPs (P < 0.0001) and 46% higher levels of CD31+/CD41- EMPs (P < 0.0001). CONCLUSION: In a large community-based sample, circulating EMP levels were associated with the presence of cardiometabolic risk factors, particularly dyslipidaemia. These data underscore the potential influence of high-risk metabolic profiles on endothelial integrity.


Assuntos
Doenças Cardiovasculares/patologia , Micropartículas Derivadas de Células/patologia , Endotélio Vascular/patologia , Síndrome Metabólica/patologia , Idoso , Antígenos CD/metabolismo , Células Endoteliais/patologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Fatores de Risco
8.
Clin Chem ; 60(11): 1402-8, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25237063

RESUMO

BACKGROUND: Biomarkers of cardiovascular stress have been associated with incident cardiovascular outcomes. Their relations with measures of subclinical atherosclerosis, as assessed by carotid intima-media thickness, have not been well described. METHODS: We measured plasma growth differentiation factor-15 (GDF-15), soluble ST2 (sST2), and high-sensitivity troponin I (hsTnI) in 3111 Framingham Offspring participants who also underwent carotid ultrasonography during the sixth examination (1995-1998, mean age 58 years, 54% women). Carotid measurements included maximal internal carotid artery (ICA) intima-media thickness (IMT), plaque presence (defined as ICA IMT >1.5 mm), and mean common carotid artery IMT. We carried out multivariable regressions for carotid measurements vs biomarkers using linear and logistic models; P < 0.0056 was deemed statistically significant. RESULTS: Maximal ICA IMT was significantly associated with plasma GDF-15 [ß-estimate 0.04 per 1-U increase in log(GDF-15), SE 0.01, P < 0.0001]. Similarly, the odds of having carotid plaque increased 33% [odds ratio 1.33 per 1-U increase in log(GDF-15), 95% CI 1.20-1.48, P < 0.0001]. In contrast, there was no significant association of maximal ICA IMT or plaque presence with sST2 or hsTnI, and none of the 3 biomarkers was significantly associated with mean CCA IMT. GDF-15 was a stronger predictor of maximal ICA thickness and plaque presence compared with BNP and CRP when these conventional biomarkers were tested together. CONCLUSIONS: Increased GDF-15 concentrations are associated with subclinical atherosclerosis, including maximal ICA IMT and carotid plaque presence. Future studies investigating the role of GDF-15 for screening and management of patients with subclinical atherosclerosis are warranted.


Assuntos
Aterosclerose/sangue , Doenças Cardiovasculares/sangue , Aterosclerose/diagnóstico por imagem , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Doenças Cardiovasculares/diagnóstico por imagem , Doenças Cardiovasculares/patologia , Espessura Intima-Media Carotídea , Estudos de Coortes , Estudos Transversais , Feminino , Fator 15 de Diferenciação de Crescimento/sangue , Humanos , Proteína 1 Semelhante a Receptor de Interleucina-1 , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/sangue , Receptores de Superfície Celular/sangue , Reprodutibilidade dos Testes , Troponina I/sangue
9.
J Am Soc Nephrol ; 24(8): 1330-8, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23687356

RESUMO

Metabolomic approaches have begun to catalog the metabolic disturbances that accompany CKD, but whether metabolite alterations can predict future CKD is unknown. We performed liquid chromatography/mass spectrometry-based metabolite profiling on plasma from 1434 participants in the Framingham Heart Study (FHS) who did not have CKD at baseline. During the following 8 years, 123 individuals developed CKD, defined by an estimated GFR of <60 ml/min per 1.73 m(2). Numerous metabolites were associated with incident CKD, including 16 that achieved the Bonferroni-adjusted significance threshold of P≤0.00023. To explore how the human kidney modulates these metabolites, we profiled arterial and renal venous plasma from nine individuals. Nine metabolites that predicted CKD in the FHS cohort decreased more than creatinine across the renal circulation, suggesting that they may reflect non-GFR-dependent functions, such as renal metabolism and secretion. Urine isotope dilution studies identified citrulline and choline as markers of renal metabolism and kynurenic acid as a marker of renal secretion. In turn, these analytes remained associated with incident CKD in the FHS cohort, even after adjustment for eGFR, age, sex, diabetes, hypertension, and proteinuria at baseline. Addition of a multimarker metabolite panel to clinical variables significantly increased the c-statistic (0.77-0.83, P<0.0001); net reclassification improvement was 0.78 (95% confidence interval, 0.60 to 0.95; P<0.0001). Thus, the addition of metabolite profiling to clinical data may significantly improve the ability to predict whether an individual will develop CKD by identifying predictors of renal risk that are independent of estimated GFR.


Assuntos
Falência Renal Crônica/diagnóstico , Falência Renal Crônica/epidemiologia , Metabolômica/métodos , Idoso , Biomarcadores/sangue , Cromatografia Líquida , Feminino , Seguimentos , Humanos , Incidência , Falência Renal Crônica/sangue , Testes de Função Renal , Masculino , Espectrometria de Massas , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco
10.
Circulation ; 126(13): 1596-604, 2012 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-22907935

RESUMO

BACKGROUND: Biomarkers for predicting cardiovascular events in community-based populations have not consistently added information to standard risk factors. A limitation of many previously studied biomarkers is their lack of cardiovascular specificity. METHODS AND RESULTS: To determine the prognostic value of 3 novel biomarkers induced by cardiovascular stress, we measured soluble ST2, growth differentiation factor-15, and high-sensitivity troponin I in 3428 participants (mean age, 59 years; 53% women) in the Framingham Heart Study. We performed multivariable-adjusted proportional hazards models to assess the individual and combined ability of the biomarkers to predict adverse outcomes. We also constructed a "multimarker" score composed of the 3 biomarkers in addition to B-type natriuretic peptide and high-sensitivity C-reactive protein. During a mean follow-up of 11.3 years, there were 488 deaths, 336 major cardiovascular events, 162 heart failure events, and 142 coronary events. In multivariable-adjusted models, the 3 new biomarkers were associated with each end point (P<0.001) except coronary events. Individuals with multimarker scores in the highest quartile had a 3-fold risk of death (adjusted hazard ratio, 3.2; 95% confidence interval, 2.2-4.7; P<0.001), 6-fold risk of heart failure (6.2; 95% confidence interval, 2.6-14.8; P<0.001), and 2-fold risk of cardiovascular events (1.9; 95% confidence interval, 1.3-2.7; P=0.001). Addition of the multimarker score to clinical variables led to significant increases in the c statistic (P=0.005 or lower) and net reclassification improvement (P=0.001 or lower). CONCLUSION: Multiple biomarkers of cardiovascular stress are detectable in ambulatory individuals and add prognostic value to standard risk factors for predicting death, overall cardiovascular events, and heart failure.


Assuntos
Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/diagnóstico , Fator 15 de Diferenciação de Crescimento/sangue , Receptores de Superfície Celular/sangue , Troponina I/sangue , Idoso , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Doenças Cardiovasculares/epidemiologia , Seguimentos , Insuficiência Cardíaca/epidemiologia , Humanos , Proteína 1 Semelhante a Receptor de Interleucina-1 , Masculino , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/sangue , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco
11.
Front Dent ; 20: 18, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37701655

RESUMO

Objectives: This study aimed to assess the efficacy of oral mucoadhesive N-acetylcysteine (NAC) tablets for treatment of recurrent aphthous stomatitis (RAS). Materials and Methods: Forty-nine patients with RAS were randomized to receive mucoadhesive NAC tablets (n=25) or placebo (n=24). Tablets were prescribed three times a day for 7 days in each group. Pain intensity was evaluated with visual analog scale (VAS) three times a day from day 1 to day 7. Also, patients were clinically examined on days 0 (before entering the study), 3, 5, and 7 using a metal caliper to measure the diameter of the lesions. The data were statistically analyzed and P<0.05 was considered statistically significant. Results: Regarding the VAS score, all participants in the treatment group showed complete recovery on day 7 (P<0.01). Also, the diameter of the lesions was significantly smaller in the treatment group than the placebo group at the end of the study (P<0.001). Conclusion: The results of this clinical trial showed for the first time that mucoadhesive NAC tablets can significantly decrease pain and the diameter of RAS lesions without any systemic complications.

12.
Resuscitation ; 191: 109937, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37591443

RESUMO

AIM: Assessment of neurologic injury within the immediate hours following out-of-hospital cardiac arrest (OHCA) resuscitation remains a major clinical challenge. Extracellular vesicles (EVs), small bodies derived from cytosolic contents during injury, may provide the opportunity for "liquid biopsy" within hours following resuscitation, as they contain proteins and RNA linked to cell type of origin. We evaluated whether micro-RNA (miRNA) from serologic EVs were associated with post-arrest neurologic outcome. METHODS: We obtained serial blood samples in an OHCA cohort. Using novel microfluidic techniques to isolate EVs based on EV surface marker GluR2 (present on excitatory neuronal dendrites enriched in hippocampal tissue), we employed reverse transcription quantitative polymerase chain reaction (RT-qPCR) methods to measure a panel of miRNAs and tested association with dichotomized modified Rankin Score (mRS) at discharge. RESULTS: EVs were assessed in 27 post-arrest patients between 7/3/2019 and 7/21/2022; 9 patients experienced good outcomes. Several miRNA species including miR-124 were statistically associated with mRS at discharge when measured within 6 hours of resuscitation (AUC = 0.84 for miR-124, p < 0.05). In a Kendall ranked correlation analysis, miRNA associations with outcome were not strongly correlated with standard serologic marker measurements, or amongst themselves, suggesting that miRNA provide distinct information from common protein biomarkers. CONCLUSIONS: This study explores the associations between miRNAs from neuron-derived EVs (NDEs) and circulating protein biomarkers within 6 hours with neurologic outcome, suggesting a panel of very early biomarker may be useful during clinical care. Future work will be required to test larger cohorts with a broader panel of miRNA species.


Assuntos
Lesões Encefálicas , Vesículas Extracelulares , MicroRNAs , Parada Cardíaca Extra-Hospitalar , Humanos , Estudos de Viabilidade , MicroRNAs/genética , MicroRNAs/metabolismo , Encéfalo , Biomarcadores , Vesículas Extracelulares/genética , Vesículas Extracelulares/metabolismo , Parada Cardíaca Extra-Hospitalar/terapia , Parada Cardíaca Extra-Hospitalar/metabolismo
13.
Clin Chem ; 58(12): 1673-81, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23065477

RESUMO

BACKGROUND: Soluble ST2 (sST2) is a cardiac biomarker whose concentration rises in response to myocardial strain. Increased sST2 concentrations may predict adverse outcomes in patients with heart failure and myocardial infarction. Because sST2 was largely undetectable with first-generation assays in ambulatory individuals, there are few data regarding its distribution and correlates in community-based populations. METHODS: We measured sST2 using a highly sensitive ELISA in 3450 Framingham Heart Study participants who attended a routine examination. We used multivariable linear regression models to identify covariates associated with sST2 in the general sample. We obtained a reference sample (n = 1136) by excluding individuals with prevalent coronary disease, heart failure, atrial fibrillation, diabetes, hypertension, obesity, valvular disease, left ventricular systolic dysfunction, and pulmonary and renal dysfunction. We used empiric and quantile regression techniques to estimate the 2.5th, 50th, 97.5th, and 99th quantiles. RESULTS: In the general sample (mean age 59 years, 55% women), systolic blood pressure (P = 0.006), antihypertensive medication use (P = 0.03), and diabetes (P < 0.001) were associated with sST2 concentrations. In the reference sample (mean age 55, 59% women), male sex (P < 0.0001) and older age (P = 0.004) were predictive of higher sST2 concentrations. Quantile and empirical methods were used to define the reference intervals. Using the empirical approach, upper 99% percentile values in different age groups ranged from 46.6 to 64.4 µg/L in men and 36.7 to 53.0 µg/L in women. CONCLUSIONS: In a well-characterized, community-based cohort, values for sST2 differ between men and women, increase with age, and are associated with diabetes and hypertension.


Assuntos
Receptores de Superfície Celular/sangue , Adulto , Fatores Etários , Idoso , Anti-Hipertensivos/uso terapêutico , Biomarcadores/sangue , Diabetes Mellitus/sangue , Feminino , Humanos , Hipertensão/sangue , Hipertensão/tratamento farmacológico , Hipertensão/fisiopatologia , Proteína 1 Semelhante a Receptor de Interleucina-1 , Masculino , Pessoa de Meia-Idade , Valores de Referência , Fatores Sexuais
14.
Clin Chem ; 58(11): 1582-91, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22997280

RESUMO

BACKGROUND: Growth differentiation factor 15 (GDF15), a stress-responsive cytokine produced in cardiovascular cells under conditions of inflammation and oxidative stress, is emerging as an important prognostic marker in individuals with and without existing cardiovascular disease (CVD). We therefore examined the clinical and genetic correlates of circulating GDF15 concentrations, which have not been investigated collectively. METHODS: Plasma GDF15 concentrations were measured in 2991 participants in the Framingham Offspring Study who were free of clinically overt CVD (mean age, 59 years; 56% women). Clinical correlates of GDF15 were examined in multivariable analyses. We then conducted a genomewide association study of the GDF15 concentration that included participants in the Framingham Offspring Study and participants in the PIVUS (Prospective Investigation of the Vasculature in Uppsala Seniors) study. RESULTS: GDF15 was positively associated with age, smoking, antihypertensive treatment, diabetes, worse kidney function, and use of nonsteroidal antiinflammatory drugs (NSAIDs), but it was negatively associated with total cholesterol and HDL cholesterol. Clinical correlates accounted for 38% of interindividual variation in the circulating GDF15 concentration, whereas genetic factors accounted for up to 38% of the residual variability (h(2) = 0.38; P = 2.5 × 10(-11)). We identified 1 locus of genomewide significance. This locus, which is on chromosome 19p13.11 and includes the GDF15 gene, is associated with GDF15 concentration (smallest P = 2.74 × 10(-32) for rs888663). Conditional analyses revealed 2 independent association signals at this locus (rs888663 and rs1054564), which were associated with altered cis gene expression in blood cell lines. CONCLUSIONS: In ambulatory individuals, both cardiometabolic risk factors and genetic factors play important roles in determining circulating GDF15 concentrations and contribute similarly to the overall variation.


Assuntos
Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/genética , Fator 15 de Diferenciação de Crescimento/sangue , Fator 15 de Diferenciação de Crescimento/genética , Idoso , Doenças Cardiovasculares/fisiopatologia , HDL-Colesterol/sangue , Estudos de Coortes , Feminino , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Polimorfismo de Nucleotídeo Único , Locos de Características Quantitativas , Fatores de Risco
15.
Gastroenterol Hepatol Bed Bench ; 15(1): 59-65, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35611251

RESUMO

Aim: Compared to the prevalence and complications, there is still limited evidence in this regard. Background: With an incidence rate of 200,000 cases annually and the induction of numerous complications, caustic ingestion imposes a significant burden on the healthcare system. Apart from being fatal in some cases, this injury affects its victims' quality of life as it is followed by many gastrointestinal problems. This injury mainly occurs accidentally among children, whereas in adults, it often occurs with suicidal intentions. Despite recent advances in internal medicine, gastroenterology, and toxicology, this type of injury remains a debilitating and, in some cases, fatal disorder for its victims. Methods: This study retrospectively evaluated the clinical, laboratory, and endoscopic findings of 150 patients admitted to a referral center of toxicology and forensic medicine and assessed factors associated with each type of injury. Results: The findings indicated a mortality rate as high as 7.3% in this population. Age, pH, and previous medical conditions were associated with more complications. Higher degrees of injury were also significantly associated with higher mortality. No significant difference was observed between types of corrosive substances. Conclusion: It seems that the most effective intervention for controlling caustic ingestion injuries would be psychiatric support, primary healthcare, and household education.

16.
Life Sci ; 282: 119796, 2021 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-34245774

RESUMO

Adenosine, an endogenous purine nucleoside, is a well-known actor of the immune system and the inflammatory response both in physiologic and pathologic conditions. By acting upon particular, G-protein coupled adenosine receptors, i.e., A1, A2- a & b, and A3 receptors mediate a variety of intracellular and immunomodulatory actions. Several studies have elucidated Adenosine's effect and its up-and downstream molecules and enzymes on the anti-tumor response against several types of cancers. We have also targeted a couple of molecules to manipulate this pathway and get the immune system's desired response in our previous experiences. Besides, the outgrowth of the studies on ocular Adenosine in recent years has significantly enhanced the knowledge about Adenosine and its role in ocular immunology and the inflammatory response of the eye. Glaucoma is the second leading cause of blindness globally, and the recent application of Adenosine and its derivatives has shown the critical role of the adenosine pathway in its pathophysiology. However, despite a very promising background, the phase III clinical trial of Trabodenoson failed to achieve the non-inferiority goals of the study. In this review, we discuss different aspects of the abovementioned pathway in ophthalmology and ocular immunology; following a brief evaluation of the current immunotherapeutic strategies, we try to elucidate the links between cancer immunotherapy and glaucoma in order to introduce novel therapeutic targets for glaucoma.


Assuntos
Adenosina/imunologia , Glaucoma/imunologia , Neoplasias/imunologia , Animais , Olho/imunologia , Glaucoma/terapia , Humanos , Imunidade , Imunoterapia , Neoplasias/terapia
17.
JBI Evid Implement ; 20(1): 101-110, 2021 Aug 25.
Artigo em Inglês | MEDLINE | ID: mdl-34433188

RESUMO

INTRODUCTION: Oral mucositis is a common debilitating complication of cancer treatments, particularly chemotherapy and radiation. OBJECTIVES: The purpose of this study was to improve oral mucositis prevention and control among cancer patients through the implementation of best practice guidelines in a tertiary referral center in Northern Iran. METHODS: A clinical audit design was utilized in this implementation project. A preimplementation audit was conducted against nine best practice criteria for the prevention and treatment of oral mucositis among new cases of cancer patients in November and December 2019. Fifty cancer patients and 20 nurses participated in this phase of the clinical audit. The next step included a facilitated multidisciplinary focus group identifying targeted strategies and implementing them, completed in late December 2019. A postimplementation audit was then conducted on another 50 cancer patients and the same 20 nurses in January and early February 2020. The project utilized the Joanna Briggs Institute Practical Application of Clinical Evidence System and Getting Research into Practice software. RESULTS: The preimplementation audit revealed gaps between the current practice and best practice across eight of the nine criteria. After implementing the targeted strategies, the outcomes improved across most of the criteria in the follow-up audit: 80% increase was observed in compliance of staff education, 100% increase in providing standard oral hygiene protocol in place, 64% increase in carrying out a dental examination and conducting initial oral cavity examination, and also 34% increase in conducting of ongoing oral cavity examination by a dentist, and finally 100% increase in providing preventive and therapeutic oral care regimens in place and oral pain assessment using a validated tool. CONCLUSION: The results of this project indicate that clinical auditing is an effective approach to the assessment of evidence-based care practices for oral mucositis among new cancer patients. Evidence-based oral mucositis management among cancer patients can be achieved by educating the patients and nursing staff using the newest guidelines and dentists' comprehensive dental and oral hygiene examinations.


Assuntos
Neoplasias , Estomatite , Prática Clínica Baseada em Evidências , Humanos , Irã (Geográfico) , Neoplasias/tratamento farmacológico , Medição da Dor , Estomatite/prevenção & controle , Centros de Atenção Terciária
18.
Crit Care Explor ; 3(7): e0498, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34291225

RESUMO

OBJECTIVES: There is increasing evidence of cardiovascular morbidity associated with severe acute respiratory syndrome coronavirus 2 (coronavirus disease 2019). Pro-B-type natriuretic peptide is a biomarker of myocardial stress, associated with various respiratory and cardiac outcomes. We hypothesized that pro-B-type natriuretic peptide level would be associated with mortality and clinical outcomes in hospitalized coronavirus disease 2019 patients. DESIGN: We performed a retrospective analysis using adjusted logistic and linear regression to assess the association of admission pro-B-type natriuretic peptide (analyzed by both cutoff > 125 pg/mL and log transformed pro-B-type natriuretic peptide) with clinical outcomes. We additionally treated body mass index, a confounder of both pro-B-type natriuretic peptide levels and coronavirus disease 2019 outcomes, as an ordinal variable. SETTING: We reviewed hospitalized patients with coronavirus disease 2019 who had a pro-B-type natriuretic peptide level measured within 48 hours of admission between March 1, and August 31, 2020, from a multihospital U.S. health system. PATIENTS: Adult patients (≥ 18 yr old; n = 1232) with confirmed coronavirus disease 2019 admitted to the health system. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: After adjustment for demographics, comorbidities, and troponin I level, higher pro-B-type natriuretic peptide level was significantly associated with death and secondary outcomes of new heart failure, length of stay, ICU duration, and need for ventilation among hospitalized coronavirus disease 2019 patients. This significance persisted after adjustment for body mass index as an ordinal variable. The adjusted hazard ratio of death for log transformed pro-B-type natriuretic peptide was 1.56 (95% CI, 1.23-1.97; p < 0.0001). CONCLUSIONS: Further investigation is warranted on the utility of pro-B-type natriuretic peptide for clinical prognostication in coronavirus disease 2019 as well as implications of abnormal pro-B-type natriuretic peptide in the underlying pathophysiology of coronavirus disease 2019-related myocardial injury.

19.
Dig Dis Sci ; 55(5): 1385-90, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-19507027

RESUMO

Herbal remedies, particularly peppermint, have been reported to be helpful in controlling symptoms of irritable bowel syndrome (IBS). We conducted a randomized double-blind placebo-controlled study on 90 outpatients with IBS. Subjects took one capsule of enteric-coated, delayed-release peppermint oil (Colpermin) or placebo three times daily for 8 weeks. We visited patients after the first, fourth, and eighth weeks and evaluated their symptoms and quality of life. The number of subjects free from abdominal pain or discomfort changed from 0 at week 0 to 14 at week 8 in the Colpermin group and from 0 to 6 in controls (P < 0.001). The severity of abdominal pain was also reduced significantly in the Colpermin group as compared to controls. Furthermore, Colpermin significantly improved the quality of life. There was no significant adverse reaction. Colpermin is effective and safe as a therapeutic agent in patients with IBS suffering from abdominal pain or discomfort.


Assuntos
Síndrome do Intestino Irritável/tratamento farmacológico , Óleos de Plantas/farmacologia , Adulto , Distribuição de Qui-Quadrado , Preparações de Ação Retardada , Método Duplo-Cego , Feminino , Humanos , Masculino , Mentha piperita , Placebos , Estatísticas não Paramétricas , Inquéritos e Questionários , Resultado do Tratamento
20.
Life Sci ; 259: 118150, 2020 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-32726663

RESUMO

Conventional therapeutic methods against cancer, including chemotherapy, radiotherapy, surgery, and combination therapy, have exhibited different toxicity levels due to their unspecific mechanism of action. To overcome the challenges facing conventional cancer therapies, newly developed methods are being investigated. Significant levels of specificity, remarkable accumulation at the tumor site, limited side effects, and minimal off-target effects enable the newly synthesized nanoparticles (NPs) to become the preferred drug delivery method in anticancer therapeutic approaches. According to the literature, CD73 has a pivotal role in cancer progression and resistance to chemotherapy and radiotherapy. Therefore, CD73 has attracted considerable attention among scientists to target this molecule. Accordingly, FDA approved CDK inhibitors such as Dinaciclib that blocks CDK1, 2, 5, and 9, and exhibits significant anticancer activity. So in this study, we intended to simultaneously suppress CD73 and CDKs in cancer cells by using the folic acid (FA)-conjugated chitosan-lactate (CL) NPs loaded with anti-CD73 siRNA and Dinaciclib to control tumor progression and metastasis. The results showed that NPs could effectively transfect cancer cells in a FA receptor-dependent manner leading to suppression of proliferation, survival, migration, and metastatic potential. Moreover, the treatment of tumor-bearing mice with this combination strategy robustly inhibited tumor growth and enhanced survival time in mice. These findings imply the high potential of FA-CL NPs loaded with anti-CD73 siRNA and Dinaciclib for use in cancer treatment shortly.


Assuntos
5'-Nucleotidase/efeitos dos fármacos , Antineoplásicos/farmacologia , Compostos Bicíclicos Heterocíclicos com Pontes/farmacologia , Ácido Fólico , Nanopartículas , Compostos de Piridínio/farmacologia , RNA Interferente Pequeno/administração & dosagem , RNA Interferente Pequeno/farmacologia , 5'-Nucleotidase/antagonistas & inibidores , Animais , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Terapia Combinada , Óxidos N-Cíclicos , Quinases Ciclina-Dependentes/efeitos dos fármacos , Progressão da Doença , Sistemas de Liberação de Medicamentos , Sinergismo Farmacológico , Humanos , Indolizinas , Camundongos , Metástase Neoplásica/tratamento farmacológico , Neoplasias Experimentais/tratamento farmacológico , Ensaio Tumoral de Célula-Tronco
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