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1.
Rheumatology (Oxford) ; 62(5): 1804-1813, 2023 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-36018230

RESUMEN

OBJECTIVES: Evaluate the importance of treatment sequencing in SELECT-COMPARE, assessing potential differences between starting upadacitinib or adalimumab therapy following inadequate MTX response. METHODS: Patients from SELECT-COMPARE were randomized to upadacitinib 15 mg once daily, placebo or adalimumab 40 mg. Per protocol, patients with <20% improvement in tender or swollen joint counts (weeks 14, 18, 22) or failure to achieve Clinical Disease Activity Index (CDAI) low disease activity (LDA) at week 26 were blindly switched from upadacitinib to adalimumab or vice versa. Treatment outcomes, including clinical remission/LDA, physical function, pain and a novel combined endpoint for deep response, were evaluated through 48 weeks and corresponding time-averaged response rates determined. Data were analysed by initial randomized group regardless of any subsequent switch in therapy. RESULTS: This post hoc analysis included 651 patients initially randomized to upadacitinib (of whom 252 switched to adalimumab) and 327 patients initially randomized to adalimumab (of whom 159 switched to upadacitinib). At week 48, patients randomized to either therapy demonstrated similar achievement of most treatment endpoints. Greater improvements in the total time spent in a lower disease state were observed for initial upadacitinib vs initial adalimumab therapy across most clinical and patient-reported outcomes through 48 weeks, and the median time to DAS28(CRP) <2.6/≤3.2 occurred 6-8 weeks earlier among those randomized to upadacitinib. CONCLUSION: Following a modified treat-to-target strategy, rates of CDAI remission/LDA and DAS28(CRP) <2.6/≤3.2 at 48 weeks were similar, regardless of starting therapy. However, patients initially receiving upadacitinib reached treatment targets more quickly and spent more time in clinical targets over the initial 48 weeks of treatment. TRIAL REGISTRATION: ClinicalTrials.gov, https://clinicaltrials.gov, NCT02629159.


Asunto(s)
Antirreumáticos , Artritis Reumatoide , Humanos , Adalimumab/uso terapéutico , Antirreumáticos/uso terapéutico , Metotrexato/uso terapéutico , Objetivos , Método Doble Ciego , Artritis Reumatoide/tratamiento farmacológico , Resultado del Tratamiento , Quimioterapia Combinada
2.
Mol Biol Rep ; 51(1): 25, 2023 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-38127178

RESUMEN

BACKGROUND: The blood-brain barrier (BBB) is a complex and dynamic structure that serves as a gatekeeper, restricting the migrations of most compounds and molecules from blood into the central nervous system (CNS). The BBB plays a crucial role in maintaining CNS physiological function and brain homeostasis. It can protect the CNS from the entrance of toxic and infectious agents, however, it also restricts the drug permeation into brain to play a therapeutic role. The BBB has been the biggest limiting hurdle to medications entering the brain excluding from the brain about 100% of large-molecule and more than 98% of all small-molecule neurotherapeutics. As a result, it is of inability for drug molecule to reach requisite concentrations within the brain. OBJECTIVE: With the aim of enhancing drug permeability and efficacy, a variety of strategies have been developed: invasive approaches, such as intraarterial delivery, intrathecal delivery, or administrating directly the drug intraventricularly and intracerebrally; non-invasive approaches that take advantage of innate BBB functions, using prodrugs, focused ultrasound, intranasal administration or nanotechnology. CONCLUSIONS: Here we mainly review recent developments and challenges related to non-invasive BBB-crossing techniques, whose benefits include higher efficacy, easier application, less treatment burden, better patient acceptability, and adherence. Additionally, we also analyze the potential of non-invasive methods in the treatment of CNS disorders and render them as a most suitable platform for the management of neurological diseases.


Asunto(s)
Barrera Hematoencefálica , Encéfalo , Humanos , Sistema Nervioso Central , Sistemas de Liberación de Medicamentos , Homeostasis
3.
Ann Rheum Dis ; 81(2): 206-213, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34615638

RESUMEN

BACKGROUND: Upadacitinib (UPA) is an oral Janus kinase (JAK) inhibitor approved for the treatment of rheumatoid arthritis (RA). JAK inhibitors have been associated with an increased risk of herpes zoster (HZ) in patients with RA. OBJECTIVES: To evaluate the incidence and risk factors for HZ in UPA-treated patients with RA from the UPA phase III clinical trial programme. METHODS: Exposure-adjusted incidence/event rates for HZ were determined in patients receiving UPA (monotherapy or combination therapy) in six randomised phase III trials (data cut-off on 30 June 2020). HZ incidence and event rates were also determined in patients receiving methotrexate (MTX) monotherapy or adalimumab (ADA) + MTX. Multivariable Cox regression analysis was used to identify HZ risk factors in UPA-treated patients. RESULTS: A total of 5306 patients were included in this analysis. The incidence rate of HZ/100 patient-years (95% CI) was 0.8 (0.3 to 1.9), 1.1 (0.5 to 1.9), 3.0 (2.6 to 3.5) and 5.3 (4.5 to 6.2), in the MTX monotherapy, ADA + MTX, UPA 15 mg and UPA 30 mg groups, respectively. The majority of HZ cases with UPA (71%) involved a single dermatome. Prior history of HZ and Asian region were HZ risk factors in UPA-treated patients. CONCLUSION: In the UPA phase III RA clinical programme, HZ incidence and event rates were higher with UPA versus ADA + MTX or MTX monotherapy, and higher with the 30 mg versus 15 mg dose. Patients from Asia and those with a history of HZ may be at increased risk of HZ while receiving UPA.


Asunto(s)
Artritis Reumatoide/tratamiento farmacológico , Herpes Zóster/inducido químicamente , Herpes Zóster/epidemiología , Compuestos Heterocíclicos con 3 Anillos/efectos adversos , Inhibidores de las Cinasas Janus/efectos adversos , Adulto , Anciano , Antirreumáticos/efectos adversos , Ensayos Clínicos Fase III como Asunto , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Factores de Riesgo
4.
Neuromodulation ; 25(6): 846-853, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34288271

RESUMEN

INTRODUCTION: The efficacy of pharmacotherapy and deep brain stimulation of the subthalamic nucleus in treating Parkinson's disease motor symptoms is highly variable and may be influenced by patient genotype. The relatively common (prevalence about one in three) and protein-altering rs6265 single nucleotide polymorphism (C > T) in the gene BDNF has been associated with different clinical outcomes with levodopa. OBJECTIVE: We sought to replicate this reported association in early-stage Parkinson's disease subjects and to examine whether a difference in clinical outcomes was present with subthalamic nucleus deep brain stimulation. MATERIALS AND METHODS: Fifteen deep brain stimulation and 13 medical therapy subjects were followed for 24 months as part of the Vanderbilt DBS in Early Stage PD clinical trial (NCT00282152, FDA IDE #G050016). Primary outcome measures were the Unified Parkinson's Disease Rating Scale (UPDRS) and Parkinson's Disease Questionnaire-39. RESULTS: Outcomes with drug therapy in subjects carrying the rs6265 T allele were significantly worse following 12 months of treatment compared to C/C subjects (UPDRS: +20 points, p = 0.019; PDQ-39: +16 points, p = 0.018). In contrast, rs6265 genotype had no effect on overall motor response to subthalamic nucleus deep brain stimulation at any time point; further, rs6265 C/C subjects treated with stimulation were associated with worse UPDRS part II scores at 24 months compared to medical therapy. CONCLUSIONS: Genotyping for the rs6265 polymorphism may be useful for predicting long-term response to drug therapy and counseling Parkinson's disease patients regarding whether to consider earlier subthalamic nucleus deep brain stimulation. Validation in a larger cohort of early-stage Parkinson's disease subjects is warranted.


Asunto(s)
Estimulación Encefálica Profunda , Enfermedad de Parkinson , Núcleo Subtalámico , Factor Neurotrófico Derivado del Encéfalo/genética , Factor Neurotrófico Derivado del Encéfalo/uso terapéutico , Genotipo , Humanos , Enfermedad de Parkinson/complicaciones , Enfermedad de Parkinson/genética , Enfermedad de Parkinson/terapia , Resultado del Tratamiento
5.
Ann Rheum Dis ; 80(4): 432-439, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33148701

RESUMEN

OBJECTIVES: To evaluate efficacy and safety of immediate switch from upadacitinib to adalimumab, or vice versa, in patients with rheumatoid arthritis with non-response or incomplete-response to the initial therapy. METHODS: SELECT-COMPARE randomised patients to upadacitinib 15 mg once daily (n=651), placebo (n=651) or adalimumab 40 mg every other week (n=327). A treat-to-target study design was implemented, with blinded rescue occurring prior to week 26 for patients who did not achieve at least 20% improvement in both tender and swollen joint counts ('non-responders') and at week 26 based on Clinical Disease Activity Index (CDAI) >10 ('incomplete-responders') without washout. RESULTS: A total of 39% (252/651) and 49% (159/327) of patients originally randomised to upadacitinib and adalimumab were rescued to the alternate therapy. In both switch groups (adalimumab to upadacitinib and vice versa) and in non-responders and incomplete-responders, improvements in disease activity were observed at 3 and 6 months following rescue. CDAI low disease activity was achieved by 36% and 47% of non-responders and 45% and 58% of incomplete-responders switched to adalimumab and upadacitinib, respectively, 6 months following switch. Overall, approximately 5% of rescued patients experienced worsening in disease activity at 6 months postswitch. The frequency of adverse events was similar between switch groups. CONCLUSIONS: These observations support a treat-to-target strategy, in which patients who fail to respond initially (or do not achieve sufficient response) are switched to a therapy with an alternate mechanism of action and experience improved outcomes. No new safety findings were observed despite immediate switch without washout.


Asunto(s)
Antirreumáticos , Artritis Reumatoide , Inhibidores de las Cinasas Janus , Adalimumab/uso terapéutico , Artritis Reumatoide/inducido químicamente , Artritis Reumatoide/tratamiento farmacológico , Método Doble Ciego , Compuestos Heterocíclicos con 3 Anillos/efectos adversos , Humanos , Metotrexato/uso terapéutico , Resultado del Tratamiento
6.
Circulation ; 131(3): 254-62, 2015 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-25359163

RESUMEN

BACKGROUND: A large body of epidemiological and experimental evidence suggests that vitamin D deficiency may promote hypertension. This raises the possibility that vitamin D supplementation could be a simple intervention to reduce blood pressure, but data from prospective, randomized trials are limited. METHODS AND RESULTS: A double-blind, randomized, controlled trial was conducted at 4 sites in the United States. We enrolled 534 individuals 18 to 50 years of age with low vitamin D status (25-hydroxyvitamin D levels ≤25 ng/mL) and systolic blood pressure of 120 to 159 mm Hg. Participants were randomized to high-dose (4000 IU/d) versus low-dose (400 IU/d) oral vitamin D3 for 6 months. The primary end point was change in mean 24-hour systolic blood pressure. Secondary end points included change in ambulatory diastolic blood pressure and clinic systolic and diastolic blood pressures. The median age was 38 years, and 62% of participants were men. Forty-six percent of participants were white, and 48% were black. The median 25-hydroxyvitamin D level at baseline was 15.3 ng/mL. Four-hundred fifty-five participants (85%) had at least 1 follow-up blood pressure measurement; 383 participants (72%) completed the full 6-month study. At the end of the study, there was no significant difference in the primary end point (change in mean 24-hour systolic blood pressure, -0.8 versus -1.6 mm Hg in the high-dose and low-dose arms; P=0.71) or in any of the secondary end points. Furthermore, there was no evidence of association between change in 25-hydroxyvitamin D and change in 24-hour systolic blood pressure at 6 months (Spearman correlation coefficient, -0.05, P=0.34). Results were consistent across prespecified subgroups. CONCLUSIONS: Vitamin D supplementation did not reduce blood pressure in individuals with prehypertension or stage I hypertension and vitamin D deficiency. Our findings suggest that the association between vitamin D status and elevated blood pressure noted in observational studies is not causal. CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov. Unique identifier: NCT01240512.


Asunto(s)
Colecalciferol/uso terapéutico , Hipertensión/tratamiento farmacológico , Prehipertensión/tratamiento farmacológico , Deficiencia de Vitamina D/tratamiento farmacológico , Adulto , Presión Sanguínea/efectos de los fármacos , Presión Sanguínea/fisiología , Colecalciferol/sangre , Colecalciferol/farmacología , Método Doble Ciego , Femenino , Estudios de Seguimiento , Humanos , Hipertensión/sangre , Hipertensión/diagnóstico , Masculino , Persona de Mediana Edad , Prehipertensión/sangre , Prehipertensión/diagnóstico , Deficiencia de Vitamina D/sangre , Deficiencia de Vitamina D/diagnóstico
7.
J Thromb Thrombolysis ; 41(4): 656-62, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26446588

RESUMEN

Abnormal platelet reactivity is associated with recurrent ischemia and bleeding following percutaneous coronary intervention (PCI). Protease-activated receptor-1 (PAR1), encoded by F2R, is a high affinity thrombin receptor on platelets and the target of the antiplatelet drug vorapaxar. The intronic single nucleotide polymorphism F2R IVS-14 A/T affects PAR1 receptor density and function. We hypothesized that carriers of the T allele, who have been shown to have decreased platelet reactivity, would be at lower risk for thrombotic events, but higher risk for bleeding following PCI. Using BioVU, the Vanderbilt DNA repository linked to the electronic medical record, we studied 660 patients who underwent PCI for unstable or stable coronary artery disease. Primary outcome measures were major adverse cardiovascular events (MACE, composite of revascularization, MI, stroke, death) and bleeding (assessed by Bleeding Academic Research Consortium scale) over 24 months. The minor allele (T) frequency was 14.8 %. There were no genotypic differences in the frequency of MACE (33.7, 28.8, and 31.6 % for A/A, A/T, and T/T respectively, P = 0.50) or bleeding (15.7, 14.7, and 18.8 % for A/A, A/T, and T/T respectively, P = 0.90). In a Cox regression model, fully adjusted for age, race, sex, BMI, and smoking status, carrying a T allele was not associated with MACE (HR 1.19, 95 % CI 0.89-1.59, P = 0.23) or bleeding (HR 0.73, 95 % CI 0.37-1.4, P = 0.34). In conclusion, in our population, F2R IVS-14 PAR1 variability does not affect risk of MACE or bleeding following PCI.


Asunto(s)
Enfermedad de la Arteria Coronaria/genética , Enfermedad de la Arteria Coronaria/cirugía , Intervención Coronaria Percutánea/efectos adversos , Polimorfismo Genético , Hemorragia Posoperatoria/genética , Receptor PAR-1/genética , Anciano , Anciano de 80 o más Años , Enfermedad de la Arteria Coronaria/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/etiología , Infarto del Miocardio/genética , Infarto del Miocardio/mortalidad , Hemorragia Posoperatoria/etiología , Hemorragia Posoperatoria/mortalidad , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/genética , Accidente Cerebrovascular/mortalidad
8.
Sleep Breath ; 20(2): 515-22, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26092280

RESUMEN

PURPOSE: Accurate identification of atrial fibrillation episodes from polysomnograms is important for research purposes but requires manual review of a large number of long electrocardiographic tracings. As automated assessment of these tracings for atrial fibrillation may improve efficiency, this study aimed to evaluate this approach in polysomnogram-derived electrocardiographic data. METHODS: A previously described algorithm to detect atrial fibrillation from single-lead electrocardiograms was applied to polysomnograms from a large epidemiologic study of obstructive sleep apnea in older men (Osteoporotic Fractures in Men [MrOS] Sleep Study). Atrial fibrillation status during each participant's PSG was determined by independent manual review. Models to predict atrial fibrillation status from a combination of algorithm output and clinical/polysomnographic characteristics were developed, and their accuracy was evaluated using standard statistical techniques. RESULTS: Derivation and validation cohorts each consisted of 1395 individuals; 5 % of each group had atrial fibrillation. Model parameters were optimized for the derivation cohort using the Akaike information criterion. Application to the validation cohort of these optimized models revealed high sensitivity (85-90 %) and specificity (90-95 %) as well as good predictive ability, as assessed by the C statistic (>0.9) and generalized R (2) values (∼0.6). Addition of cardiovascular or polysomnogram data to the models did not improve their performance. CONCLUSIONS: In a research setting, automated detection of atrial fibrillation from polysomnogram-derived electrocardiographic signals appears feasible and agrees well with manual identification. Future studies can evaluate the utility of this technique as applied to clinical polysomnograms and ambulatory electrocardiographic monitoring.


Asunto(s)
Fibrilación Atrial/diagnóstico , Diagnóstico por Computador , Electrocardiografía , Polisomnografía , Procesamiento de Señales Asistido por Computador , Apnea Central del Sueño/diagnóstico , Apnea Obstructiva del Sueño/diagnóstico , Anciano , Algoritmos , Estudios de Cohortes , Humanos , Masculino , Modelos Estadísticos , Osteoporosis/fisiopatología , Valor Predictivo de las Pruebas
9.
Brain Inj ; 30(13-14): 1642-1647, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27740854

RESUMEN

OBJECTIVE: To determine risk factors associated with tracheostomy placement after severe traumatic brain injury (TBI) and subsequent outcomes among those who did and did not receive a tracheostomy. METHODS: This retrospective cohort study compared adult trauma patients with severe TBI (n = 583) who did and did not receive tracheostomy. A multivariable logistic regression model assessed the associations between age, sex, race, insurance status, admission GCS, AIS (Head, Face, Chest) and tracheostomy placement. Ordinal logistic regression models assessed tracheostomy's influence on ventilator days and ICU LOS. To limit immortal time bias, Cox proportional hazards models assessed mortality at 1, 3 and 12-months. RESULTS: In this multivariable model, younger age and private insurance were associated with increased probability of tracheostomy. AIS, ISS, GCS, race and sex were not risk factors for tracheostomy placement. Age showed a non-linear relationship with tracheostomy placement; likelihood peaked in the fourth decade and declined with age. Compared to uninsured patients, privately insured patients had an increased probability of receiving a tracheostomy (OR = 1.89 [95% CI = 1.09-3.23]). Mortality was higher in those without tracheostomy placement (HR = 4.92 [95% CI = 3.49-6.93]). Abbreviated injury scale-Head was an independent factor for time to death (HR = 2.53 [95% CI = 2.00-3.19]), but age, gender and insurance were not. CONCLUSIONS: Age and insurance status are independently associated with tracheostomy placement, but not with mortality after severe TBI. Tracheostomy placement is associated with increased survival after severe TBI.


Asunto(s)
Lesiones Traumáticas del Encéfalo/epidemiología , Lesiones Traumáticas del Encéfalo/cirugía , Complicaciones Posoperatorias/epidemiología , Traqueostomía/métodos , Adulto , Factores de Edad , Lesiones Traumáticas del Encéfalo/mortalidad , Estudios de Cohortes , Femenino , Escala de Coma de Glasgow , Humanos , Cobertura del Seguro , Modelos Logísticos , Masculino , Complicaciones Posoperatorias/etiología , Factores de Riesgo , Adulto Joven
10.
Crit Care Med ; 43(8): 1595-602, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25867906

RESUMEN

OBJECTIVES: To determine whether addition of an electronic sepsis evaluation and management tool to electronic sepsis alerting improves compliance with treatment guidelines and clinical outcomes in septic ICU patients. DESIGN: A pragmatic randomized trial. SETTING: Medical and surgical ICUs of an academic, tertiary care medical center. PATIENTS: Four hundred and seven patients admitted during a 4-month period to the medical or surgical ICU with a diagnosis of sepsis established at the time of admission or in response to an electronic sepsis alert. INTERVENTIONS: Patients were randomized to usual care or the availability of an electronic tool capable of importing, synthesizing, and displaying sepsis-related data from the medical record, using logic rules to offer individualized evaluations of sepsis severity and response to therapy, informing users about evidence-based guidelines, and facilitating rapid order entry. MEASUREMENTS AND MAIN RESULTS: There was no difference between the electronic tool (218 patients) and usual care (189 patients) with regard to the primary outcome of time to completion of all indicated Surviving Sepsis Campaign 6-hour Sepsis Resuscitation Bundle elements (hazard ratio, 1.98; 95% CI, 0.75-5.20; p = 0.159) or time to completion of each element individually. ICU mortality, ICU-free days, and ventilator-free days did not differ between intervention and control. Providers used the tool to enter orders in only 28% of available cases. CONCLUSIONS: A comprehensive electronic sepsis evaluation and management tool is feasible and safe but did not influence guideline compliance or clinical outcomes, perhaps due to low utilization.


Asunto(s)
Sistemas de Apoyo a Decisiones Clínicas , Unidades de Cuidados Intensivos/normas , Sepsis/diagnóstico , Sepsis/terapia , Centros Médicos Académicos , Adulto , Anciano , Femenino , Adhesión a Directriz , Mortalidad Hospitalaria , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Evaluación de Procesos y Resultados en Atención de Salud , Guías de Práctica Clínica como Asunto , Índice de Severidad de la Enfermedad , Choque Séptico/diagnóstico , Choque Séptico/terapia , Método Simple Ciego
11.
J Surg Oncol ; 111(2): 173-7, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25219789

RESUMEN

BACKGROUND AND OBJECTIVES: In 2002, with the advent of better classification techniques, the World Health Organization declassified malignant fibrous histiocytoma (MFH) as a distinct histological entity in favor of the reclassified entity high-grade undifferentiated pleomorphic sarcoma (HGUPS). To date, no study has evaluated comparative outcomes between patients designated historically in the MFH group and those classified in the new HGUPS classification. Our goal was to determine the presence of clinical prognostic implications that have evolved with this new nomenclature. METHODS: Sixty-eight patients were retrospectively evaluated between January 1998 and December 2007. Forty-five patients diagnosed with MFH between 1998 and 2003 were compared to 23 patients in the HGUPS group, from 2004 to 2007. Primary prognostic outcomes assessed included overall survival, metastatic-free, and local recurrence-free survival. RESULTS: Five-year survivorship between MFH and HGUPS populations, using Kaplan-Meier or competing risk methods, did not show statistical difference for overall survival (60% vs. 74%, P=0.36), 5-year metastasis-free survival (31% vs. 26%, P=0.67), or local recurrence-free survival (13% vs. 16%, P=0.62). CONCLUSION: Despite new classification nomenclature, there appears to be no identifiable prognostic implications for sarcomas that remain in the unclassifiable HGUPS group, as compared to the previously accepted MFH group.


Asunto(s)
Histiocitoma Fibroso Maligno/mortalidad , Histiocitoma Fibroso Maligno/patología , Sarcoma/mortalidad , Sarcoma/patología , Neoplasias de los Tejidos Blandos/mortalidad , Neoplasias de los Tejidos Blandos/patología , Anciano , Estudios de Cohortes , Femenino , Histiocitoma Fibroso Maligno/terapia , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Metástasis de la Neoplasia , Recurrencia Local de Neoplasia , Pronóstico , Estudios Retrospectivos , Sarcoma/terapia , Neoplasias de los Tejidos Blandos/terapia , Terminología como Asunto
12.
J Pharmacol Exp Ther ; 351(1): 33-43, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25052834

RESUMEN

Although resistance to the P2Y12 antagonist clopidogrel is linked to altered drug metabolism, some studies suggest that these pharmacokinetic abnormalities only partially account for drug resistance. To circumvent pharmacokinetic complications and target P2Y12 receptor function we applied the direct P2Y12 antagonist 2-methylthio-AMP (2-methylthioadenosine 5'-monophosphate triethylammonium salt) to purified platelets ex vivo. Platelets were purified from healthy and type 2 diabetes mellitus (T2DM) patients and stimulated with thrombin or the selective protease-activated receptor agonists, protease-activated receptor 1-activating peptide (PAR1-AP), or PAR4-AP. Platelet activation as measured by αIIbß3 activation, and P-selectin expression was monitored in 141 subjects. Our results demonstrate that, compared with healthy subjects, platelets from diabetic patients are resistant to inhibition by 2-methylthio-AMP, demonstrating P2Y12 pharmacodynamic defects among diabetic patients. Inhibition of thrombin-mediated αIIbß3 activation by 2-methylthio-AMP was lower in diabetic platelets versus healthy platelets. Subgroup analysis revealed a racial difference in the resistance to 2-methylthio-AMP. We found no resistance in platelets from diabetic African Americans; they were inhibited by 2-methylthio-AMP equally as well as platelets from healthy African Americans. In contrast, platelets from Caucasian patients with diabetes were resistant to P2Y12 antagonism compared with healthy Caucasians. Multivariable analysis demonstrated that other variables, such as obesity, age, or gender, could not account for the differential resistance to 2-methylthio-AMP among races. These results suggest that in addition to altered drug metabolism, P2Y12 receptor function itself is altered in the Caucasian diabetic population. The racial difference in platelet function in T2DM is a novel finding, which may lead to differences in treatment as well as new targets for antiplatelet therapy.


Asunto(s)
Adenosina Monofosfato/análogos & derivados , Adenosina Monofosfato/farmacología , Plaquetas/efectos de los fármacos , Diabetes Mellitus Tipo 2/etnología , Resistencia a Medicamentos , Antagonistas del Receptor Purinérgico P2Y/farmacología , Adenosina Monofosfato/farmacocinética , Adulto , Negro o Afroamericano , Diabetes Mellitus Tipo 2/metabolismo , Femenino , Humanos , Masculino , Población Blanca
13.
J Card Fail ; 20(9): 630-7, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24954426

RESUMEN

BACKGROUND: Peripherally inserted central catheters (PICCs) are used to deliver continuous intravenous (IV) milrinone in stage D heart failure (HF) patients awaiting heart transplantation (HT). METHODS: We retrospectively analyzed PICC adverse events (AEs) and associated cost in 129 status 1B patients from 2005 to 2012. End points were HT, left ventricular assist device (LVAD), and death. Regression analysis was used to identify AE risk factors. RESULTS: Fifty-three PICC AEs occurred in 35 patients (27%), consisting of 48 infections, 4 thromboses, and 1 bleeding event. Median duration of PICC support was 63 (interquartile range [IQR] 34-131) days, and median time to first PICC infection was 44 (IQR 14-76) days. Among PICC infections, 9% required defibrillator removal and 30% were inactivated on the HT list for a mean of 23 ± 17 days. Rate of HT, LVAD, or death was similar between groups (P > .05). Regression analysis found that a double lumen PICC was associated with a shorter time to first PICC infection (hazard ratio 7.59, 95% CI 1.97-29.23; P = .003). Median cost per PICC infection was $10,704 (IQR $7,401-$26,083). CONCLUSIONS: PICC infections were the most frequent AEs. PICCs with >1 lumen were associated with increased risk of infection. PICC AEs accounted for increased intensive care unit admissions, HT list inactivations, and overall cost.


Asunto(s)
Cardiotónicos/uso terapéutico , Cateterismo Venoso Central/efectos adversos , Cateterismo Periférico/efectos adversos , Insuficiencia Cardíaca/tratamiento farmacológico , Milrinona/uso terapéutico , Centros Médicos Académicos , Infecciones Relacionadas con Catéteres/economía , Infecciones Relacionadas con Catéteres/epidemiología , Cateterismo Venoso Central/instrumentación , Cateterismo Periférico/instrumentación , Femenino , Insuficiencia Cardíaca/clasificación , Trasplante de Corazón , Corazón Auxiliar , Hemorragia/epidemiología , Humanos , Infusiones Intravenosas , Unidades de Cuidados Intensivos/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Análisis de Regresión , Estudios Retrospectivos , Tennessee/epidemiología , Tromboembolia Venosa/epidemiología , Listas de Espera
14.
J Child Psychol Psychiatry ; 55(8): 924-34, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24329926

RESUMEN

BACKGROUND: Children with autism spectrum disorder (ASD) are impaired in social communication and interaction with peers, which may reflect diminished social motivation. Many children with ASD show enhanced stress when playing with other children. This study investigated social and stress profiles of children with ASD during play. METHODS: We utilized a peer interaction paradigm in a natural playground setting with 66 unmedicated, prepubertal, children aged 8-12 years [38 with ASD, 28 with typical development (TD)]. Salivary cortisol was collected before and after a 20-min playground interaction that was divided into periods of free and solicited play facilitated by a confederate child. Statistical analyses included Wilcoxon rank-sum tests, mixed effects models, and Spearman correlations to assess the between-group differences in social and stress functioning, identify stress responders, and explore associations between variables, respectively. RESULTS: There were no differences between the groups during unsolicited free play; however, during solicited play by the confederate, significant differences emerged such that children with ASD engaged in fewer verbal interactions and more self-play than the TD group. Regarding physiological arousal, children with ASD as a group showed relatively higher cortisol in response to social play; however, there was a broad range of responses. Moreover, those with the highest cortisol levels engaged in less social communication. CONCLUSIONS: The social interaction of children with ASD can be facilitated by peer solicitation; however, it may be accompanied by increased stress. The children with ASD that have the highest level of cortisol show less social motivation; yet, it is unclear if it reflects an underlying state of heightened arousal or enhanced reactivity to social engagement, or both.


Asunto(s)
Nivel de Alerta , Trastornos Generalizados del Desarrollo Infantil/psicología , Motivación , Conducta Social , Nivel de Alerta/fisiología , Niño , Trastornos Generalizados del Desarrollo Infantil/fisiopatología , Femenino , Humanos , Hidrocortisona/análisis , Masculino , Motivación/fisiología , Grupo Paritario , Juego e Implementos de Juego/psicología , Saliva/química , Estrés Psicológico/etiología , Estrés Psicológico/psicología , Encuestas y Cuestionarios , Escalas de Wechsler
15.
J Surg Oncol ; 109(5): 415-20, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24284805

RESUMEN

BACKGROUND AND OBJECTIVES: Prior studies have demonstrated postoperative infection may confer a survival benefit after osteosarcoma resection. Our aim was to determine whether infection after soft tissue sarcoma resection has similar effects on metastasis, recurrence and survival. METHODS: A retrospective review was conducted; 396 patients treated surgically for a soft tissue sarcoma between 2000 and 2008 were identified. Relevant oncologic data were collected. Fifty-six patients with a postoperative infection were compared with 340 patients without infection. Hazard ratios and overall cumulative risk were evaluated. RESULTS: There was no difference in survival, local recurrence or metastasis between patients with or without a postoperative infection. Patients were evenly matched for age at diagnosis, gender, smoking status, and diabetes status. Tumor characteristics did not differ between groups in tumor size, location, depth, grade, margin status, stage, and histologic subtype. There was no difference in utilization of chemotherapy or radiation therapy between groups. From our competing risk model, only positive margin status significantly impacted the risk of local recurrence. An increase in tumor size corresponded to an increased risk of metastasis and death. CONCLUSIONS: Postoperative infection neither conferred a protective effect, nor increased the risk of adverse oncologic outcomes after soft tissue sarcoma resection.


Asunto(s)
Recurrencia Local de Neoplasia/diagnóstico , Sarcoma/mortalidad , Sarcoma/cirugía , Infección de la Herida Quirúrgica/etiología , Adulto , Anciano , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Oportunidad Relativa , Pronóstico , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Sarcoma/inmunología , Sarcoma/patología , Infección de la Herida Quirúrgica/inmunología , Factores de Tiempo , Resultado del Tratamiento
16.
Arch Phys Med Rehabil ; 95(12): 2382-9, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25175161

RESUMEN

OBJECTIVES: To determine whether delirium during the hospital stay predicted health-related quality of life (HRQOL) at 1 year after injury in trauma intensive care unit (ICU) survivors without intracranial hemorrhage, and to examine the association between depressive and posttraumatic stress disorder (PTSD) symptoms and each of the HRQOL domains at 1-year follow-up. DESIGN: Prognostic cohort with a 1-year follow-up. SETTING: Level 1 trauma ICU. PARTICIPANTS: Adult patients without intracranial hemorrhage (N=173) admitted to a level 1 trauma ICU. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: HRQOL was measured with the Medical Outcomes Study 36-Item Short-Form Health Survey at 1 year after traumatic injury. RESULTS: Average delirium duration ± SD was .51±1.1 days. Hierarchical multivariable linear regression analyses did not find a statistical relationship between delirium and HRQOL at 1-year follow-up. However, increased levels of depressive symptoms at 1 year were statistically associated with poorer functioning in all physical and mental health HRQOL domains, whereas PTSD at 1 year was statistically associated with all HRQOL domains except role-physical (P<.05). CONCLUSIONS: There was no statistical association between delirium during the hospital stay and HRQOL at 1 year, which may be due to the short time spent in delirium by our study population. Depressive symptoms demonstrated a stronger relationship with mental and physical HRQOL domains at 1 year than PTSD, indicating their own unique pathway after trauma. Findings lend support for the separate assessment and management of depression and PTSD. Additional research on the duration and subtypes of delirium is needed within the trauma ICU population, as the effects are not widely known.


Asunto(s)
Delirio/psicología , Depresión/epidemiología , Calidad de Vida/psicología , Trastornos por Estrés Postraumático/epidemiología , Heridas y Lesiones/psicología , Adulto , Depresión/psicología , Femenino , Estudios de Seguimiento , Hospitalización , Humanos , Unidades de Cuidados Intensivos , Masculino , Persona de Mediana Edad , Escalas de Valoración Psiquiátrica , Trastornos por Estrés Postraumático/psicología , Factores de Tiempo , Índices de Gravedad del Trauma
17.
J Cardiothorac Vasc Anesth ; 28(3): 441-7, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24746336

RESUMEN

OBJECTIVE: To test the effect of a high reliability organization (HRO) intervention on patient lengths of stay in the CVICU and hospital. The authors proposed that (1) higher safety related evidence based protocol (SREBP) team compliance scores and (2) lower SREBP milestone scores are associated with shorter lengths of CVICU and hospital stay. DESIGN: A prospective, longitudinal observational evaluation was used to assess the effects of SREBP-focused rounding processes and a milestone-tracking tool. SETTING: United States, university academic medical center's 27-bed CVICU. PARTICIPANTS: Six hundred sixty-five adult cardiac surgery patients and the CVICU care team (100 registered nurses and 16 clinical providers) participated. MEASUREMENTS AND MAIN RESULTS: Team compliance was the proportion of SREBP-related team behaviors exhibited during daily rounds. Patients' milestone scores were the cumulative difference between actual and expected times for 4 SREBP milestones over 48 hours. Milestones achieved earlier than expected indicated reduced complication risk, and milestones achieved later than expected indicated increased risk. As team compliance increased, CVICU length of stay decreased 0.66 (95% CI: -0.04 to 1.28; p = 0.08) days; hospital stay decreased 0.89 times (95% CI: 0.77-1.03; p = 0.008). As the mean milestone scores increased from -7 to 12, length of ICU stay increased 2.63 (95% CI: 1.66-3.59; p<0.001) days; hospital length of stay increased 1.44 times (95% CI: 1.23-1.7; p = 0.05). CONCLUSIONS: A milestone-driven pathway supported by team rounding was associated with decreased lengths of CVICU and hospital stay. However, tracking patient trajectories by milestones suggests a more complex relationship than anticipated and presents new opportunities for SREBP implementation and research.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos/métodos , Protocolos Clínicos , Objetivos , Anciano , Cuidados Críticos , Medicina Basada en la Evidencia , Femenino , Adhesión a Directriz , Humanos , Tiempo de Internación , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Grupo de Atención al Paciente , Seguridad del Paciente , Estudios Prospectivos , Volumen Sistólico
18.
Clin Orthop Relat Res ; 472(9): 2799-806, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24903824

RESUMEN

BACKGROUND: Obesity is a growing epidemic and has been associated with an increased frequency of complications after various surgical procedures. Studies also have shown adipose tissue to promote a microenvironment favorable for tumor growth. Additionally, the relationship between obesity and prognosis of soft tissue sarcomas has yet to be evaluated. QUESTIONS/PURPOSES: We sought to assess if (1) obesity affects survival outcomes (local recurrence, distant metastasis, and death attributable to disease) in patients with extremity soft tissue sarcomas; and (2) whether obesity affected wound healing and other surgical complications after treatment. METHODS: A BMI of 30 kg/m(2) or greater was used to define obesity. Querying our prospective database between 2001 and 2008, we identified 397 patients for the study; 154 were obese and 243 were not obese. Mean followup was 4.5 years (SD, 3.1 years) in the obese group and 3.9 years (SD, 3.2 years) in the nonobese group; the group with a BMI of 30 kg/m(2) or greater had a higher proportion of patients with followups of at least 2 years compared with the group with a BMI less than 30 kg/m(2) (76% versus 62%). Outcomes, including local recurrence, distant metastasis, and overall survival, were analyzed after patients were stratified by BMI. Multivariable survival models were used to identify independent predictors of survival outcomes. Wilcoxon rank sum test was used to compare continuous variables. Based on the accrual interval of 8 years, the additional followup of 5 years after data collection, and the median survival time for the patients with a BMI less than 30 kg/m(2) of 3 years, we were able to detect true median survival times in the patients with a BMI of 30 kg/m(2) of 2.2 years or less with 80% power and type I error rate of 0.05. RESULTS: Patients who were obese had similar survival outcomes and wound complication rates when compared with their nonobese counterparts. Patients who were obese were more likely to have lower-grade tumors (31% versus 20%; p = 0.021) and additional comorbidities including diabetes mellitus (26% versus 7%; p < 0.001), hypertension (63% versus 38%; p < 0.001), and smoking (49% versus 37%; p = 0.027). Regression analysis confirmed that even after accounting for certain tumor characteristics and comorbidities, obesity did not serve as an independent risk factor in affecting survival outcomes. CONCLUSIONS: Although the prevalence of obesity continues to increase and lead to many negative health consequences, it does not appear to adversely affect survival, local recurrence, or wound complication rates for patients with extremity soft tissue sarcomas. LEVEL OF EVIDENCE: Level III, therapeutic study. See the Instructions for Authors for a complete description of levels of evidence.


Asunto(s)
Obesidad/complicaciones , Sarcoma/mortalidad , Anciano , Índice de Masa Corporal , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Pierna , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/epidemiología , Obesidad/mortalidad , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Sarcoma/complicaciones , Sarcoma/terapia , Tasa de Supervivencia/tendencias , Tennessee/epidemiología , Factores de Tiempo , Resultado del Tratamiento
19.
Clin Diabetes ; 32(4): 178-82, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25646944

RESUMEN

In Brief Postpartum follow-up for patients with gestational diabetes mellitus (GDM) is essential to manage future disease risk. In a diverse, urban population of GDM patients at a major medical center, high fasting glucose, high BMI at diagnosis, and low education level were associated with not following up in the endocrinology clinic after delivery; patients least likely to follow up are, therefore, also at greatest risk of GDM complications. Although race/ethnicity was not a significant predictor of follow-up, Hispanic/Latina and African-American patients were more likely to have risk factors for postpartum clinical attrition.

20.
Heliyon ; 10(9): e30524, 2024 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-38726122

RESUMEN

Background: Respiratory failure requiring mechanical ventilation (MV) is a common and severe complication of Guillain-Barré syndrome (GBS) with a reported incidence ranging from 20 % to 30 %. Thus, we aim to develop a nomogram to evaluate the risk of MV in patients with GBS at admission and tailor individualized care and treatment. Methods: A total of 633 patients with GBS (434 in the training set, and 199 in the validation set) admitted to the First Hospital of Jilin University, Changchun, China from January 2010 to January 2021 were retrospectively enrolled. Subjects (n = 71) from the same institution from January 2021 to May 2022 were prospectively collected and allocated to the testing set. Multivariable logistic regression analysis was applied to build a predictive model incorporating the optimal features selected in the least absolute shrinkage and selection operator (LASSO) in the training set. The predictive model was validated using internal bootstrap resampling, an external validation set, and a prospective testing set, and the model's performance was assessed by using the concordance index (C-index), calibration curves, and decision curve analysis (DCA). Finally, we established a multivariable logistic model by using variables of the Erasmus GBS Respiratory Insufficiency Score (EGRIS) and did the same analysis to compare the performance of our predictive model with the EGRIS model. Results: Variables in the final model selected by LASSO included time from onset to admission, facial and/or bulbar weakness, Medical Research Council sum score at admission, neutrophil-to-lymphocyte ratio, and platelet-lymphocyte ratio. The model presented as a nomogram displaying favorable discriminative ability with a C-index of 0.914 in the training set, 0.903 in the internal validation set, 0.953 in the external validation set, and 0.929 in the testing set. The model was well-calibrated and clinically useful as assessed by the calibration curve and DCA. As compared with the EGRIS model, our predictive model displayed satisfactory performance. Conclusions: We constructed a nomogram for early prediction of the risk of MV in patients with GBS. This model had satisfactory performance and appeared more efficient than the EGRIS model in Chinese patients with GBS.

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