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1.
Clin Genitourin Cancer ; 22(3): 102073, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38626661

RESUMO

INTRODUCTION: Hand foot skin reaction (HFSR) is a common dose-limiting adverse effect of multi kinase inhibitors (MKI) whose mechanism is not fully understood, and the prophylaxis is inadequate. OBJECTIVE: In this pilot study, a double-blind, randomized placebo-controlled trial was conducted to evaluate the effect of topical urea in secondary prevention of sunitinib-induced HFSR in renal cell cancer patients. METHODS: Out of 55 screened patients, 14 were randomized to receive topical urea or placebo for four weeks. The association of HFSR with drug levels of sunitinib and its metabolite (n-desethyl sunitinib), genetic polymorphism of VEGFR2 gene, quality of life (QOL) and biochemical markers was also assessed. RESULTS: The results showed that urea-based cream was not superior to placebo (P = .075). There was no change in the QOL in both the groups. Single nucleotide polymorphism was checked for two nucleotides rs1870377 and rs2305948 located in VEGFR2 gene on chromosome 4. SNP (variant T > A) at rs1870377 was associated with appearance of new HFSR as compared to the wild type, although the association was not statistically significant (OR 0.714). There was no statistically significant difference between mean plasma levels of sunitinib and N-desethyl sunitinib in urea arm as compared to placebo arm as compared to placebo. The best fit population pharmacokinetic model for sunitinib was one compartment model with first order absorption and linear elimination. The median (IQR) of population parameters calculated from the population pharmacokinetics model for Ka, V and Cl was 0.22 (0.21-0.24) h-1, 4.4 (4.09-4.47) L, 0.049 (0.042-0.12) L/hr, respectively. CONCLUSION: The study suggested that the urea-based cream was not superior to placebo in decreasing the appearance of new HFSR in renal cancer patients receiving 4:2 regimen of sunitinib.


Assuntos
Carcinoma de Células Renais , Síndrome Mão-Pé , Neoplasias Renais , Sunitinibe , Ureia , Receptor 2 de Fatores de Crescimento do Endotélio Vascular , Humanos , Sunitinibe/administração & dosagem , Sunitinibe/farmacocinética , Sunitinibe/efeitos adversos , Método Duplo-Cego , Carcinoma de Células Renais/tratamento farmacológico , Masculino , Feminino , Pessoa de Meia-Idade , Ureia/análogos & derivados , Ureia/farmacocinética , Ureia/administração & dosagem , Neoplasias Renais/tratamento farmacológico , Síndrome Mão-Pé/etiologia , Síndrome Mão-Pé/prevenção & controle , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/genética , Projetos Piloto , Idoso , Polimorfismo de Nucleotídeo Único , Antineoplásicos/efeitos adversos , Antineoplásicos/administração & dosagem , Qualidade de Vida , Resultado do Tratamento , Administração Tópica , Adulto , Indóis/administração & dosagem , Indóis/farmacocinética , Indóis/efeitos adversos
2.
J Geriatr Cardiol ; 21(3): 323-330, 2024 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-38665288

RESUMO

BACKGROUND: Smartwatches have become readily accessible tools for detecting atrial fibrillation (AF). There remains limited data on how they affect psychosocial outcomes and engagement in older adults. We examine the health behavior outcomes of stroke survivors prescribed smartwatches for AF detection stratified by age. METHODS: We analyzed data from the Pulsewatch study, a randomized controlled trial that enrolled patients (≥ 50 years) with a history of stroke or transient ischemic attack and CHA2DS2-VASc ≥ 2. Intervention participants were equipped with a cardiac patch monitor and a smartwatch-app dyad, while control participants wore the cardiac patch monitor for up to 44 days. We evaluated health behavior parameters using standardized tools, including the Consumer Health Activation Index, the Generalized Anxiety Disorder questionnaire, the 12-Item Short Form Health Survey, and wear time of participants categorized into three age groups: Group 1 (ages 50-60), Group 2 (ages 61-69), and Group 3 (ages 70-87). We performed statistical analysis using a mixed-effects repeated measures linear regression model to examine differences amongst age groups. RESULTS: Comparative analysis between Groups 1, 2 and 3 revealed no significant differences in anxiety, patient activation, perception of physical health and wear time. The use of smartwatch technology was associated with a decrease in perception of mental health for Group 2 compared to Group 1 (ß = -3.29, P = 0.046). CONCLUSION: Stroke survivors demonstrated a willingness to use smartwatches for AF monitoring. Importantly, among these study participants, the majority did not experience negative health behavior outcomes or decreased engagement as age increased.

3.
JMIR Cardio ; 7: e45137, 2023 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-38015598

RESUMO

BACKGROUND: Atrial fibrillation (AF) is a common cause of stroke, and timely diagnosis is critical for secondary prevention. Little is known about smartwatches for AF detection among stroke survivors. We aimed to examine accuracy, usability, and adherence to a smartwatch-based AF monitoring system designed by older stroke survivors and their caregivers. OBJECTIVE: This study aims to examine the feasibility of smartwatches for AF detection in older stroke survivors. METHODS: Pulsewatch is a randomized controlled trial (RCT) in which stroke survivors received either a smartwatch-smartphone dyad for AF detection (Pulsewatch system) plus an electrocardiogram patch or the patch alone for 14 days to assess the accuracy and usability of the system (phase 1). Participants were subsequently rerandomized to potentially 30 additional days of system use to examine adherence to watch wear (phase 2). Participants were aged 50 years or older, had survived an ischemic stroke, and had no major contraindications to oral anticoagulants. The accuracy for AF detection was determined by comparing it to cardiologist-overread electrocardiogram patch, and the usability was assessed with the System Usability Scale (SUS). Adherence was operationalized as daily watch wear time over the 30-day monitoring period. RESULTS: A total of 120 participants were enrolled (mean age 65 years; 50/120, 41% female; 106/120, 88% White). The Pulsewatch system demonstrated 92.9% (95% CI 85.3%-97.4%) accuracy for AF detection. Mean usability score was 65 out of 100, and on average, participants wore the watch for 21.2 (SD 8.3) of the 30 days. CONCLUSIONS: Our findings demonstrate that a smartwatch system designed by and for stroke survivors is a viable option for long-term arrhythmia detection among older adults at risk for AF, though it may benefit from strategies to enhance adherence to watch wear. TRIAL REGISTRATION: ClinicalTrials.gov NCT03761394; https://clinicaltrials.gov/study/NCT03761394. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.1016/j.cvdhj.2021.07.002.

4.
Cardiovasc Digit Health J ; 4(4): 118-125, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37600446

RESUMO

Background: The detection of atrial fibrillation (AF) in stroke survivors is critical to decreasing the risk of recurrent stroke. Smartwatches have emerged as a convenient and accurate means of AF diagnosis; however, the impact on critical patient-reported outcomes, including anxiety, engagement, and quality of life, remains ill defined. Objectives: To examine the association between smartwatch prescription for AF detection and the patient-reported outcomes of anxiety, patient activation, and self-reported health. Methods: We used data from the Pulsewatch trial, a 2-phase randomized controlled trial that included participants aged 50 years or older with a history of ischemic stroke. Participants were randomized to use either a proprietary smartphone-smartwatch app for 30 days of AF monitoring or no cardiac rhythm monitoring. Validated surveys were deployed before and after the 30-day study period to assess anxiety, patient activation, and self-rated physical and mental health. Logistic regression and generalized estimation equations were used to examine the association between smartwatch prescription for AF monitoring and changes in the patient-reported outcomes. Results: A total of 110 participants (mean age 64 years, 41% female, 91% non-Hispanic White) were studied. Seventy percent of intervention participants were novice smartwatch users, as opposed to 84% of controls, and there was no significant difference in baseline rates of anxiety, activation, or self-rated health between the 2 groups. The incidence of new AF among smartwatch users was 6%. Participants who were prescribed smartwatches did not have a statistically significant change in anxiety, activation, or self-reported health as compared to those who were not prescribed smartwatches. The results held even after removing participants who received an AF alert on the watch. Conclusion: The prescription of smartwatches to stroke survivors for AF monitoring does not adversely affect key patient-reported outcomes. Further research is needed to better inform the successful deployment of smartwatches in clinical practice.

5.
Ann Med ; 55(1): 526-532, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-36724401

RESUMO

BACKGROUND: Early detection of AF is critical for stroke prevention. Several commercially available smartwatches are FDA cleared for AF detection. However, little is known about how patient-physician relationships affect patients' anxiety, activation, and health-related quality of life when prescribed smartwatch for AF detection. METHODS: Data were used from the Pulsewatch study (NCT03761394), which randomized adults (>50 years) with no contraindication to anticoagulation and a CHA2DS2-VASc risk score ≥2 to receive a smartwatch-smartphone app dyad for AF monitoring vs. conventional monitoring with an ECG patch (Cardea SoloTM) and monitored participants for up to 45 days. The Perceived Efficacy in Patient-Physician Interactions survey was used to assess patient confidence in physician interaction at baseline with scores ≥45 indicating high perceived efficacy in patient-provider interactions. Generalized Anxiety Disorder-7 Scale, Consumer Health Activation Index, and Short-Form Health Survey were utilized to examine anxiety, patient activation, and physical and mental health status, at baseline, 14, and 44 days, respectively. We used mixed-effects repeated measures linear regression models to assess changes in psychosocial outcomes among smartwatch users in relation to self-reported efficacy in physician interaction over the study period. RESULTS: A total of 93 participants (average age 64.1 ± 8.9 years; 43.0% female; 88.2% non-Hispanic white) were included in this analysis. At baseline, fifty-six (60%) participants reported high perceived efficacy in patient-physician interaction. In the fully adjusted models, high perceived efficacy (vs. low) at baseline was associated with greater patient activation and perceived mental health (ß 12.0, p-value <0.001; ß 3.39, p-value <0.05, respectively). High perceived self-efficacy was not associated with anxiety or physical health status (ß - 0.61, p-value 0.46; ß 0.64, p-value 0.77) among study participants. CONCLUSIONS: Higher self-efficacy in patient-physician interaction was associated with higher patient activation and mental health status among stroke survivors using smartwatches. Furthermore, we found no association between anxiety and smartwatch prescription for AF in participants with high self-efficacy in patient-physician interaction. Efforts to improve self-efficacy in patient-physician interaction may improve patient activation and self-rated health and subsequently may lead to better clinical outcomes.KEY MESSAGESHigher self-efficacy in patient-physician interaction was associated with higher patient activation and mental health status among stroke survivors using smartwatches.No association between anxiety and smartwatch prescription for AF in participants with high self-efficacy in patient-physician interaction.Efforts to improve self-efficacy in patient-physician interaction may improve patient activation and self-rated health and subsequently may lead to better clinical outcomes.


Assuntos
Fibrilação Atrial , Acidente Vascular Cerebral , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Ansiedade/etiologia , Transtornos de Ansiedade/complicações , Fibrilação Atrial/complicações , Participação do Paciente , Qualidade de Vida , Autorrelato , Acidente Vascular Cerebral/prevenção & controle
6.
J Ayub Med Coll Abbottabad ; 34(3): 474-477, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36377159

RESUMO

BACKGROUND: Hepatitis C is associated with a wide range of health repercussions. Pakistan is one of the highly prevalent countries of Hepatitis C Virus (HCV) infection. The availability of cost-effective, robust, and reliable screening and diagnostic tests for hepatitis C is important to address the disease burden. Standardization of screening and diagnostic assays in clinical laboratories is crucial for achieving big goals. Objectives of this study are to correlate the results of two different HCV antibody (HCV Ab) assays and to examine the correlation of HCV core antigen (HCV c Ag) results with HCV PCR for HCV infection diagnosis. METHODS: This descriptive cross-sectional study was carried out from November to December 2020 at Dow University of Health Sciences. Total number of 40 HCV Ab samples were analysed by both chemiluminescence (CMIA) and electrochemiluminescence (ECLIA) immunoassays. Tests for HCV RNA PCR and HCV c Ag were performed on all samples. Results of screening and diagnostic assays were correlated and agreements were examined. Statistical analysis for agreement was carried out by using R software version 3.6.3 through AC1 Gwetz Statistic. The study was approved by the institutional ethical review committee. RESULTS: An agreement of 0.73 and 0.95 was found between two different HCV Ab immunoassays and HCV c Ag and HCV PCR, respectively. CONCLUSIONS: We found a good correlation between CMIA and ECLIA for HCV Ab. An excellent correlation was found between HCV c Ag and HCV PCR. Based on our study findings, HCV c Ag is a candidate test for the diagnosis of active HCV infection.


Assuntos
Antígenos da Hepatite C , Hepatite C , Humanos , Estudos Transversais , Anticorpos Anti-Hepatite C , Hepacivirus/genética , Hepatite C/diagnóstico , Reação em Cadeia da Polimerase , Sensibilidade e Especificidade , RNA Viral
8.
JAMA Netw Open ; 5(8): e2228885, 2022 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-36018589

RESUMO

Importance: Widespread distribution of rapid antigen tests is integral to the US strategy to address COVID-19; however, it is estimated that few rapid antigen test results are reported to local departments of health. Objective: To characterize how often individuals in 6 communities throughout the United States used a digital assistant to log rapid antigen test results and report them to their local departments of health. Design, Setting, and Participants: This prospective cohort study is based on anonymously collected data from the beneficiaries of the Say Yes! Covid Test program, which distributed more than 3 000 000 rapid antigen tests at no cost to residents of 6 communities (Louisville, Kentucky; Indianapolis, Indiana; Fulton County, Georgia; O'ahu, Hawaii; Ann Arbor and Ypsilanti, Michigan; and Chattanooga, Tennessee) between April and October 2021. A descriptive evaluation of beneficiary use of a digital assistant for logging and reporting their rapid antigen test results was performed. Interventions: Widespread community distribution of rapid antigen tests. Main Outcomes and Measures: Number and proportion of tests logged and reported to the local department of health through the digital assistant. Results: A total of 313 000 test kits were distributed, including 178 785 test kits that were ordered using the digital assistant. Among all distributed kits, 14 398 households (4.6%) used the digital assistant, but beneficiaries reported three-quarters of their rapid antigen test results to their state public health departments (30 965 tests reported of 41 465 total test results [75.0%]). The reporting behavior varied by community and was significantly higher among communities that were incentivized for reporting test results vs those that were not incentivized or partially incentivized (90.5% [95% CI, 89.9%-91.2%] vs 70.5%; [95% CI, 70.0%-71.0%]). In all communities, positive tests were less frequently reported than negative tests (60.4% [95% CI, 58.1%-62.8%] vs 75.5% [95% CI, 75.1%-76.0%]). Conclusions and Relevance: These results suggest that application-based reporting with incentives may be associated with increased reporting of rapid tests for COVID-19. However, increasing the adoption of the digital assistant may be a critical first step.


Assuntos
COVID-19 , Coleta de Dados , Georgia , Humanos , Estudos Prospectivos , Autoteste , Estados Unidos
9.
Indian J Pharmacol ; 54(2): 90-96, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35546459

RESUMO

OBJECTIVES: Sinonasal mucormycosis is a serious fungal infection. Early diagnosis and prompt antifungal therapy along with surgical intervention is the key to its management. Liposomal amphotericin B (LAmB) given intravenously is the antifungal agent of choice. However, the current literature is not clear on its optimum dosage. We did a retrospective study to find the optimum dose of LAmB in cases with sinonasal mucormycosis. MATERIALS AND METHODS: Thirty patients diagnosed with mucormycosis involving sinonasal, rhino-orbital, or rhino-orbito-cerebral regions and receiving only LAmB as pharmacotherapy were included in our retrospective study from 2017 to 2020. A multiple logistic regression model was developed to correlate the total dose of LAmB and other parameters with the final outcome which was defined clinico-radiologically as improved, worsened, or death. The dose of LAmB which led to the first significant change in urea, creatinine, and potassium levels was also determined. RESULTS: The model showed a good fit in goodness-to-fit analysis (Pearson = 0.999, deviance = 0.995), while the likelihood ratio was statistically significant (0.001). The overall model prediction was 83.3%. However, the correlation of outcome with any of the variables, including mean LAmB dose per kilogram (82.2 ± 13.02 mg/kg), was statistically not significant. CONCLUSION: Many patient-related factors (such as age, comorbidities, extent of the disease, and side effects from LAmB therapy), which vary on a case-to-case basis, contribute to the outcome in a mucormycosis patient. The optimum dose of LAmB for improved outcome still requires individualization guided by experience, till well-designed studies address the question.


Assuntos
Infecções Oculares Fúngicas , Mucormicose , Doenças Orbitárias , Anfotericina B , Antifúngicos/uso terapêutico , Infecções Oculares Fúngicas/diagnóstico , Infecções Oculares Fúngicas/tratamento farmacológico , Infecções Oculares Fúngicas/microbiologia , Humanos , Mucormicose/tratamento farmacológico , Mucormicose/microbiologia , Doenças Orbitárias/tratamento farmacológico , Estudos Retrospectivos
10.
Vnitr Lek ; 68(E-1): 4-8, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35459399

RESUMO

Risk of type 2 diabetes mellitus (T2DM) is higher in tobacco smokers compared to non-smokers. The risk declines after smoking cessation. However, ex-smokers are also more prone to the metabolic syndrome. The question thus is, whether ex-smokers could temporarily have a higher risk of T2DM than current smokers. The available studies on this topic are not in agreement in their conclusions, as most of them also primarily do not compare ex-smokers to current smokers, but to non-smokers. However, based on the available studies, it rather seems the risk of T2DM is temporarily higher after smoking cessation. The higher risk of T2DM seems to be enhanced by weight gain that typically occurs first years after smoking cessation without intervention. Therefore, smoking cessation in patients who are in an increased risk of T2DM should be accompanied by T2DM preventative measures (lifestyle modification, weight monitoring and recommendation of pharmacotherapy of tobacco addiction to lower the risk of weight gain) and more frequent checks of blood glucose level to ensure early T2DM detection.


Assuntos
Diabetes Mellitus Tipo 2 , Abandono do Hábito de Fumar , Diabetes Mellitus Tipo 2/etiologia , Humanos , Fumar/efeitos adversos , Fumar/tratamento farmacológico , Aumento de Peso
11.
medRxiv ; 2022 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-35411338

RESUMO

Importance: Wide-spread distribution of rapid-antigen tests is integral to the United States' strategy to address COVID-19; however, it is estimated that few rapid-antigen test results are reported to local departments of health. Objective: To characterize how often individuals in six communities throughout the United States used a digital assistant to log rapid-antigen test results and report them to their local Department of Health. Design: This prospective cohort study is based on anonymously collected data from the beneficiaries of The Say Yes! Covid Test program, which distributed 3,000,000 rapid antigen tests at no cost to residents of six communities between April and October 2021. We provide a descriptive evaluation of beneficiaries' use of digital assistant for logging and reporting their rapid antigen test results. Main Outcome and Measures: Number and proportion of tests logged and reported to the Department of Health through the digital assistant. Results: A total of 178,785 test kits were ordered by the digital assistant, and 14,398 households used the digital assistant to log 41,465 test results. Overall, a small proportion of beneficiaries used the digital assistant (8%), but over 75% of those who used it reported their rapid antigen test results to their state public health department. The reporting behavior varied between communities and was significantly different for communities that were incentivized for reporting test results (p < 0.001). In all communities, positive tests were less reported than negative tests (60.4% vs 75.5%; p<0.001). Conclusions and Relevance: These results indicate that app-based reporting with incentives may be an effective way to increase reporting of rapid tests for COVID-19; however, increasing the adoption of the digital assistant is a critical first step.

12.
Transpl Infect Dis ; 23(1): e13451, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32815238

RESUMO

Novel coronavirus disease 2019 (COVID-19) is a highly infectious, rapidly spreading viral disease that typically presents with greater severity in patients with underlying medical conditions or those who are immunosuppressed. We present a novel case series of three kidney transplant recipients with COVID-19 who recovered after receiving COVID-19 convalescent plasma (CCP) therapy. Physicians should be aware of this potentially useful treatment option. Larger clinical registries and randomized clinical trials should be conducted to further explore the clinical and allograft outcomes associated with CCP use in this population.


Assuntos
COVID-19/complicações , COVID-19/terapia , Transplante de Rim , SARS-CoV-2 , Transplantados , Adulto , Idoso , Feminino , Humanos , Imunização Passiva , Masculino , Soroterapia para COVID-19
14.
Int J Surg Case Rep ; 67: 203-206, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32062508

RESUMO

INTRODUCTION: Bifurcated ribs are a neuroskeletal anomaly which are incidentally discovered on chest X-ray. It is a developmental disorder where sternal end of a rib is split into two, commonly found in males, on the right side and unilaterally not associated with a vertebral defect. PRESENTATION OF CASE: In this report we discuss a case of a 17-year-old girl with a left bifid rib alongside a segmental defect of the vertebra. DISCUSSION: Bifurcated ribs usually occur in isolation or with other rib abnormalities associated with vertebral defects. Most cases are asymptomatic or found at post-mortem. Gorlin Syndrome is a condition where both these anatomical defects form a part of its criteria. CONCLUSION: With barely any data on significance of bifid rib with vertebral defects and no conclusive exclusion of Gorlin Syndrome, close monitoring coupled with regular follow-ups in such patients is the likely plan of treatment. In addition, genetic testing for susceptible genes should be strongly considered.

15.
Naunyn Schmiedebergs Arch Pharmacol ; 393(4): 691-704, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31822939

RESUMO

Oxidative stress and inflammation are considered as therapeutic targets in myocardial injury. The aim of the present study was to investigate the protective effect of syringic acid (SA) and syringaldehyde (SYD) on peripheral blood mononuclear cells (PBMCs) of myocardial infarction (MI) patients. PBMCs from MI patients were cultured in the presence and absence of SA and SYD. The level of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and nitric oxide (NO) was estimated. Reactive oxygen species (ROS) formation, oxidation of lipids, proteins, and activity of antioxidant enzymes were also quantified. To further determine biomolecular changes in treated PBMCs, Fourier transform infrared (FTIR) spectroscopic analysis was done. Molecular docking study was also conducted to evaluate the binding interaction of SA and SYD with various target proteins. SA and SYD treated PBMCs of MI patients showed decreased secretion of TNF-α, IL-6, and NO. Moreover, the content of ROS, level of lipid, and protein oxidation showed diminution by treatment with both the compounds. Enhanced antioxidant defense was also observed in treated PBMCs. The FTIR spectra of treated cells revealed safeguarding effect of SA and SYD on biomolecular structure. The molecular docking analysis displayed significant binding affinity of the two compounds towards TNF-α, IL-6, and antioxidant enzymes. Our findings demonstrated potent antioxidant and anti-inflammatory effects of SA and SYD on PBMCs of MI patients. Thus, SA and SYD supplementation might be beneficial in attenuating oxidative stress and inflammation in MI.


Assuntos
Anti-Inflamatórios/farmacologia , Antioxidantes/farmacologia , Benzaldeídos/farmacologia , Ácido Gálico/análogos & derivados , Leucócitos Mononucleares/efeitos dos fármacos , Infarto do Miocárdio/metabolismo , Adulto , Células Cultivadas , Feminino , Ácido Gálico/farmacologia , Glutationa/metabolismo , Humanos , Interleucina-6/metabolismo , Leucócitos Mononucleares/metabolismo , Masculino , Malondialdeído/metabolismo , Pessoa de Meia-Idade , Simulação de Acoplamento Molecular , Infarto do Miocárdio/imunologia , Óxido Nítrico/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Espécies Reativas de Oxigênio/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
16.
Eur J Pharmacol ; 849: 135-145, 2019 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-30731086

RESUMO

Identification of pharmacologically potent antioxidant compounds for their use in preventive medicine is thrust area of current research. This study was undertaken with the aim of determining the protective role of syringic acid (SA) on isoproterenol (ISO) induced myocardial infarction (MI) in rats. SA was orally given to rats for 21 days at three different concentrations (12.5, 25 and 50 mg/kg). At 20th and 21st day, rats were subcutaneously injected with ISO and at the end of experimental period, rats were killed. ISO induced myocardial damage was averted by pre-co-treatment of SA, as decrease was found in serum level of marker enzymes (CKMB, LDH, AST, ALT), lipid peroxidation, protein carbonyl (PC) and proinflammatory cytokines (TNFα, IL 6). Furthermore, content of glutathione (GSH) and activities of antioxidant enzymes in heart tissue were significantly raised. Improvement in infarct size and erythrocyte (RBCs) morphology was also observed. The biochemical findings were supported by histopathological outcome and protective effect of SA was found to be dose dependent. The results of our study demonstrated that the cardioprotective potential of SA in rat model of ISO induced MI might be due to anti-lipid peroxidative and endogenous antioxidant system enhancement effects.


Assuntos
Cardiotoxicidade/etiologia , Cardiotoxicidade/prevenção & controle , Citoproteção/efeitos dos fármacos , Ácido Gálico/análogos & derivados , Isoproterenol/toxicidade , Adenosina Trifosfatases/metabolismo , Animais , Biomarcadores/sangue , Compostos de Bifenilo/metabolismo , Peso Corporal/efeitos dos fármacos , Cardiotoxicidade/metabolismo , Cardiotoxicidade/patologia , Eritrócitos/efeitos dos fármacos , Eritrócitos/patologia , Fibrose , Ácido Gálico/farmacologia , Glutationa/metabolismo , Coração/efeitos dos fármacos , Masculino , Miocárdio/metabolismo , Miocárdio/patologia , Óxido Nítrico/metabolismo , Tamanho do Órgão/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Picratos/metabolismo , Ratos , Ratos Wistar
17.
Eur J Pharmacol ; 852: 14-24, 2019 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-30796902

RESUMO

Rheumatoid arthritis (RA) is an autoimmune disorder affecting joints and frequently characterized by initial local and later systemic inflammation. The present study was conducted with the aim to determine the anti-inflammatory and antioxidant effects of cinnamaldehyde and eugenol in the peripheral blood mononuclear cells (PBMC) of RA patients. PBMCs obtained from RA patients were treated with varying concentrations of cinnamaldehyde and eugenol. The levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were monitored in the 24-h culture supernatant of PBMCs. Reactive oxygen species formation, biomolecular oxidation and the activities of antioxidant enzymes were also determined. FTIR analysis was done to determine structural alterations in the PBMCs. Molecular docking was performed to gain an insight into the binding mechanism of eugenol and cinnamaldehyde with pro-inflammatory cytokines. The levels of pro-inflammatory cytokines and markers of oxidative stress were found to be elevated in the PBMC culture of RA patients as compared to the healthy controls. Cinnamaldehyde and eugenol have significantly reduced the levels of cytokines. Reactive oxygen species formation, biomolecular oxidation and antioxidant defense response were also ameliorated by treating PBMCs with both the compounds. FTIR results further confirms cinnamaldehyde and eugenol mediated protection to biomolecules of PBMCs of RA patients. Molecular docking results indicates interaction of cinnamaldehyde and eugenol with key residues of TNF-α and IL-6. Cinnamaldehyde and eugenol were found to exert potent anti-inflammatory and anti-oxidant effects on the PBMC culture of RA patients. So, these compounds may be used as an adjunct in the management of RA.


Assuntos
Acroleína/análogos & derivados , Anti-Inflamatórios/farmacologia , Antioxidantes/farmacologia , Artrite Reumatoide/imunologia , Eugenol/farmacologia , Leucócitos Mononucleares/efeitos dos fármacos , Acroleína/metabolismo , Acroleína/farmacologia , Acroleína/uso terapêutico , Adulto , Anti-Inflamatórios/metabolismo , Anti-Inflamatórios/uso terapêutico , Antioxidantes/metabolismo , Antioxidantes/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/metabolismo , Biomarcadores/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Eugenol/metabolismo , Eugenol/uso terapêutico , Feminino , Glutationa/metabolismo , Humanos , Interleucina-6/metabolismo , Espaço Intracelular/efeitos dos fármacos , Espaço Intracelular/metabolismo , Leucócitos Mononucleares/metabolismo , Masculino , Simulação de Acoplamento Molecular , Óxido Nítrico/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Conformação Proteica , Espécies Reativas de Oxigênio/metabolismo , Fator de Necrose Tumoral alfa/química , Fator de Necrose Tumoral alfa/metabolismo
18.
Phytomedicine ; 53: 70-78, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30668414

RESUMO

BACKGROUND: Rheumatoid arthritis (RA) is an inflammatory autoimmune disease which leads to bone and cartilage erosion. Oxidative stress and pro-inflammatory cytokines plays crucial role in the pathophysiology of RA. Cinnamaldehyde and eugenol have a long history of medical use in various inflammatory disorders. PURPOSE: The drugs available for the treatment of RA are associated with various side effects. The present study was conducted to evaluate the anti-arthritic effects of cinnamaldehyde and eugenol in rat model of arthritis. METHODS: Type II collagen was intradermally injected to rats for the induction of arthritis. Cinnamaldehyde (10 and 20 mg/kg/day) and eugenol (10 and 20 mg/kg/day) were given orally for 15 days, starting from day 21 to 35. Dexamethasone treated rats served as positive control. Histological, radiological and scanning electron microscopic analysis were done to monitor the effect of compounds on collagen induced arthritis (CIA). Reactive oxygen species (ROS) formation, nitric oxide and antioxidant status were also determined. The markers of biomolecular oxidation (protein, lipid and DNA) and activities of enzymatic antioxidants (superoxide dismutase, glutathione peroxidase, catalase and glutathione reductase) were also evaluated in the joint homogenate and plasma of rats. For detecting inflammation, levels of TNF-α, IL-6 and IL-10 were monitored by ELISA. RESULTS: Our results showed anti-oxidant and anti-inflammatory effects of cinnamaldehyde and eugenol in arthritic rats. Scanning electron microscopy, histopathological and radiological findings also confirmed the anti-arthritic effects of cinnamaldehyde and eugenol. Both the compounds were effective in bringing significant decrease in the levels of ROS, nitric oxide, markers of biomolecular oxidation and increase in enzymatic and non-enzymatic antioxidants. The levels of TNF-α, IL-6 and IL-10 were also ameliorated by cinnamaldehyde and eugenol treatment. Between the two phytochemicals used, eugenol was found to be more effective than cinnamaldehyde in reducing the severity of arthritis. CONCLUSION: Cinnamaldehyde and eugenol were effective in ameliorating oxidative stress and inflammation in arthritic rats. These findings indicate that cinnamaldehdye and eugenol have a great potential to be used as an adjunct in the management of RA.


Assuntos
Acroleína/análogos & derivados , Artrite Experimental/tratamento farmacológico , Citocinas/metabolismo , Eugenol/farmacologia , Acroleína/farmacologia , Animais , Anti-Inflamatórios não Esteroides/farmacologia , Antioxidantes/metabolismo , Artrite Experimental/induzido quimicamente , Artrite Experimental/patologia , Artrite Reumatoide/tratamento farmacológico , Colágeno Tipo II/toxicidade , Feminino , Radicais Livres/metabolismo , Inflamação/tratamento farmacológico , Óxido Nítrico/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Ratos Wistar , Fator de Necrose Tumoral alfa/metabolismo
19.
Catheter Cardiovasc Interv ; 93(4): E217-E224, 2019 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-30467952

RESUMO

BACKGROUND: The aim of this study was to examine the relationship of albuminuria to cardiovascular disease outcomes in diabetic patients undergoing treatment for stable coronary artery disease. METHODS AND RESULTS: We analyzed data from 2176 participants of the Bypass Angioplasty Revascularization Investigation in type-2 diabetes (BARI-2D) trial, a randomized clinical trial comparing Percutaneous coronary intervention/Coronary artery bypass grafting (PCI/CABG) to medical therapy for people with diabetes. The population was stratified by baseline spot urine albumin-creatinine ratio (uACR) into normal (uACR <10 mg/g), mildly (uACR ≥10 mg/g < 30 mg/g), moderately (uACR ≥30 mg/g < 300 mg/g) and severely increased (uACR ≥300 mg/g) groups, and outcomes compared between groups. Death, myocardial infarction (MI) and/or stroke were experienced by 489 patients at a mean follow-up of 4.3 ± 1.5 years. Compared with normal uACR, mildly increased uACR was associated with a 1.4 times (P = 0.042) increase in all-cause mortality. Additionally, nonwhites with type-II diabetes and stable coronary artery disease who had mildly increased albuminuria had a Hazard ratio (HR) of 3.3 times (P = 0.028) for cardiovascular death, 3.1 times for (P = 0.002) all-cause mortality, and two times for (P = 0.015) MI during follow-up. CONCLUSIONS: Mildly increased albuminuria is a significant predictor of all-cause mortality in those with type-II diabetes mellitus and stable coronary artery disease, as well as for cardiovascular events those who are nonwhites.


Assuntos
Albuminúria/etnologia , Fármacos Cardiovasculares/uso terapêutico , Ponte de Artéria Coronária , Doença da Artéria Coronariana/terapia , Diabetes Mellitus Tipo 2/etnologia , Nefropatias Diabéticas/etnologia , Intervenção Coronária Percutânea , Idoso , Albuminúria/diagnóstico , Albuminúria/mortalidade , Brasil/epidemiologia , Fármacos Cardiovasculares/efeitos adversos , Ponte de Artéria Coronária/efeitos adversos , Ponte de Artéria Coronária/mortalidade , Doença da Artéria Coronariana/diagnóstico , Doença da Artéria Coronariana/etnologia , Doença da Artéria Coronariana/mortalidade , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/mortalidade , Nefropatias Diabéticas/diagnóstico , Nefropatias Diabéticas/mortalidade , Europa (Continente)/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/etnologia , Infarto do Miocárdio/mortalidade , América do Norte/epidemiologia , Intervenção Coronária Percutânea/efeitos adversos , Intervenção Coronária Percutânea/mortalidade , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Acidente Vascular Cerebral/etnologia , Acidente Vascular Cerebral/mortalidade , Fatores de Tempo , Resultado do Tratamento
20.
J Surg Res ; 232: 338-345, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30463739

RESUMO

BACKGROUND: Transfusion of blood products commonly occur in patients undergoing repair of acute type A aortic dissection (AADA). MATERIALS AND METHODS: The medical records of 102 AADA patients were retrospectively reviewed and stratified into cohorts by packed red blood cell (PRBC) and platelet units received: PRBC ≤2 units (n = 68) versus PRBC >2 units (n = 34); platelets ≤1 unit (n = 74) versus platelets >1 unit (n = 28). Continuous and categorical variables were assessed by analysis of variance testing and chi-square or Fisher's testing as appropriate. Multivariate logistic regression was applied to derive P values for post-transfusion complications. Kaplan-Meier survival analyses were used to compare the hospital length of stay (LOS) and survival rate at 1 mo and 1 y. RESULTS: Patients receiving >2 units of PRBC had a median LOS of 14 d versus 9 d for those receiving ≤2 units (P < 0.002). Transfusion of >2 units of PRBC was a risk factor for postoperative infection (odds ratio [OR] = 5.4, 95% confidence interval [CI]: 1.5-19.0, P = 0.009). Survival at 1 mo was 91% versus 94% (P = 0.783) and 1 y survival was 82% versus 93% (P = 0.269) between the two groups. Patients receiving >1 unit of platelets had a median LOS of 15 d versus 10 d for those receiving ≤1 unit (P = 0.005). Transfusion of >1 unit of platelets was a risk factor for postoperative atrial fibrillation and acute kidney injury (OR = 2.9, 95% CI: 1.1-7.6, P = 0.031; OR = 3.3, 95% CI: 1.2-9.4, P = 0.025, respectively). Survival at 1 mo was 93% versus 93% (P = 0.872) and 1 y survival was 81% versus 92% (P = 0.582) between the two groups. CONCLUSIONS: Transfusion of PRBC and platelets above a threshold increases the incidence of postoperative complications and hospital LOS among patients undergoing repair of AADA.


Assuntos
Aneurisma da Aorta Torácica/cirurgia , Dissecção Aórtica/cirurgia , Transfusão de Eritrócitos/efeitos adversos , Transfusão de Plaquetas/efeitos adversos , Complicações Pós-Operatórias/epidemiologia , Enxerto Vascular/efeitos adversos , Idoso , Dissecção Aórtica/mortalidade , Aneurisma da Aorta Torácica/mortalidade , Perda Sanguínea Cirúrgica , Transfusão de Eritrócitos/estatística & dados numéricos , Feminino , Mortalidade Hospitalar , Humanos , Incidência , Estimativa de Kaplan-Meier , Tempo de Internação/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Transfusão de Plaquetas/estatística & dados numéricos , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento , Enxerto Vascular/métodos
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