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1.
PLoS One ; 19(7): e0305291, 2024.
Article in English | MEDLINE | ID: mdl-38968287

ABSTRACT

Patients face numerous health-related decisions once advanced chronic kidney disease (CKD) is diagnosed. Yet, when patients are underprepared to navigate and discuss health-related decisions, they can make choices inconsistent with their expectations for the future. This pilot study, guided by the multiphase optimization strategy and community-engaged research principles, aimed to explore the acceptability of a developed patient component to a decision-support training intervention called ImPart (Improving Decisional Partnership of CKD Dyads). CKD patients and their family caregivers were recruited from an urban, academic medical center. Eligibility criteria for patients included a diagnosis of stage 3 or higher CKD (on chart review), and caregivers participated in interview sessions only. Patients without a caregiver were not eligible. The intervention was lay coach, telephone-delivered, and designed to be administered in 1-2 week intervals for 4 sessions. An interview guide, developed in collaboration with an advisory group, was designed to ascertain participants' experiences with the intervention. Caregiver interviews focused on changes in the patient's decision ability or engagement. Thirteen patients and eleven caregivers were interviewed. The program was viewed as "good" or "beneficial." Three themes capture the intervention's impact- 1) Frequent and deliberate disease-focused communication, 2) Future planning activation, and 3) Coaching relationship. The piloted intervention was successfully delivered, acceptable to use, and found to promote enhanced disease and future planning communication. By undergoing this work, we ensure that the patient component is feasible to use and meets the needs of participants before implementation in a larger factorial trial.


Subject(s)
Caregivers , Renal Insufficiency, Chronic , Humans , Caregivers/psychology , Male , Female , Renal Insufficiency, Chronic/therapy , Renal Insufficiency, Chronic/psychology , Middle Aged , Aged , Pilot Projects , Decision Making , Adult , Patient Participation , Decision Support Techniques
2.
Pediatr Blood Cancer ; 71(8): e31082, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38804869

ABSTRACT

INTRODUCTION: Children, adolescents, and young adults (CAYAs) with Down syndrome (DS) and hematologic malignancies are particularly vulnerable to infections and related complications. There are limited data regarding COVID-19 infections in this group. We aimed to understand the clinical course of COVID-19 in this population. METHODS: This observational study leverages the de-identified clinical and sociodemographic data captured by the Pediatric Oncology COVID-19 Case Report Registry (POCC) regarding CAYAs with cancer and COVID-19. We evaluated CAYAs (≤21 years at COVID-19 infection) with hematologic malignancies and COVID-19 reported from April 1, 2020 to May 2, 2023, comparing those with and without DS. Using multivariable logistic regression, we examined rates of hospitalization, intensive care unit (ICU) admission, respiratory support, and changes in cancer-directed therapy. RESULTS: Among 1408 CAYAs with hematologic malignancies, 55 had DS (CAYA-DS). CAYA-DS had higher rates of hospitalization, ICU admission, and respiratory support (p < .001) than CAYAs without DS. Similarly, multivariable analyses found higher odds of hospitalization (odds ratio [OR] = 2.8, 95% confidence interval [CI]: 1.5-5.1), ICU admission (OR = 4.2, 95% CI: 1.9-9.1), and need for respiratory support (OR = 4.2, 95% CI: 2.0-8.8) among CAYA-DS. Modifications to cancer-directed therapy were more common among CAYA-DS when related to neutropenia (p = .001), but not when unrelated to neutropenia (p = .88); CAYA-DS did not have higher odds of changes to cancer-directed therapy (OR = 1.20, 95% CI: 0.7-2.1). CONCLUSIONS: We identify CAYA-DS with hematologic malignancies as a vulnerable subpopulation at greater risk for severe COVID-19 infection. This can inform conversations with patients and families regarding therapeutic and preventive measures, as well as the risks and benefits of modifying chemotherapy in the setting of COVID-19.


Subject(s)
COVID-19 , Down Syndrome , Hematologic Neoplasms , Hospitalization , SARS-CoV-2 , Humans , COVID-19/epidemiology , COVID-19/complications , Hematologic Neoplasms/epidemiology , Hematologic Neoplasms/therapy , Hematologic Neoplasms/complications , Adolescent , Male , Down Syndrome/complications , Down Syndrome/epidemiology , Female , Child , Young Adult , Hospitalization/statistics & numerical data , Adult , Child, Preschool , Infant
3.
J Natl Cancer Inst ; 2024 Apr 16.
Article in English | MEDLINE | ID: mdl-38627241

ABSTRACT

Adolescents and Young Adults (AYAs: 15-39 y) with cancer face unique vulnerabilities, yet remain under-represented on clinical trials, including adult registries of COVID-19 in cancer (AYAs: 8-12%). Thus, we leveraged the Pediatric Oncology COVID-19 Case Report (POCC) to examine the clinical course of COVID-19 among AYAs with cancer. POCC collects de-identified clinical and sociodemographic data regarding 0-39yo with cancer (AYAs = 37%) and COVID-19 from >100 institutions. Between 04/01/2020-11/28/2023, 191 older AYAs [22-39y] and 640 younger AYAs [15-21y] were captured. Older AYAs were less often hospitalized (p < .001), admitted to the intensive care unit (ICU, p = .02), and/or required respiratory support (p = .057). In multivariable analyses, older AYAs faced 80% lower odds of ICU admission but 2.3-times greater odds of changes to cancer-directed therapy. Unvaccinated patients had 5.4-times higher odds of ICU admission. Among AYAs with cancer, the COVID-19 course varies by age. These findings can inform pediatric/adult oncology teams surrounding COVID-19 management and prevention.

4.
J Pediatr ; 271: 114038, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38554745

ABSTRACT

OBJECTIVE: To determine which groups of children with cancer for whom to apply the newly developed quality measures (QMs) for end-of-life (EOL) care. STUDY DESIGN: In a series of nominal groups, panelists answered the question: "Which children, diagnoses, conditions, or prognoses should be included when examining the quality of EOL care for children with cancer?" In each group, individual panelists proposed answers to the question. After collating individual responses, each panelist ranked their 5 top answers and points were assigned (5 pts for the best answer, 4 pts the second best, etc.). A team of pediatric oncology and palliative care clinician-scientists developed and applied a coding structure for responses and associated themes and subthemes for responses. RESULTS: We conducted 5 nominal groups with a total of 44 participants. Most participants identified as female (88%) and non-Hispanic White (86%). Seventy-nine percent were clinicians, mainly in pediatric palliative care, pediatric oncology, or hospice; 40% were researchers and 12% were bereaved parents. Responses fell into 5 themes: (1) poor prognosis cancer; (2) specific treatment scenarios; (3) certain populations; (4) certain symptoms; and (5) specific utilization scenarios. Poor prognosis cancer and specific treatment scenarios received the most points (320 pts [49%] and 147 pts [23%], respectively). CONCLUSIONS: Participants developed a framework to identify which children should be included in EOL QMs for children with cancer. The deliberate identification of the denominator for pediatric QMs serves as a potent tool for enhancing quality, conducting research, and developing clinical programs.


Subject(s)
Neoplasms , Palliative Care , Terminal Care , Humans , Neoplasms/therapy , Terminal Care/standards , Female , Male , Child , Palliative Care/standards , Quality of Health Care
5.
Ann Thorac Surg ; 117(4): 770-778, 2024 Apr.
Article in English | MEDLINE | ID: mdl-37488005

ABSTRACT

BACKGROUND: Reduction of variability through process reengineering can improve surgical results for patients with type A acute aortic syndrome. We compare short-term results before and after implementation of an Aorta Code for patients with type A acute aortic syndrome who underwent surgery. METHODS: The Aorta Code was implemented in a 5-hospital healthcare network in 2019. This critical pathway was based on a simple diagnostic algorithm, ongoing training, immediate patient transfer, and treatment by an expert multidisciplinary team. We retrospectively compared all patients operated on in our center before (2005-2018) and after (January 2019 to February 2023) its implementation. RESULTS: One hundred two and 70 patients underwent surgery in the precode and code periods, respectively. In the code period the number of patients operated on per year increased (from 7.3 to 16.8), and the median elapsed time until diagnosis (6.5 hours vs 4.2 hours), transfer (4 hours vs 2.2 hours), and operating room (2.7 hours vs 1.8 hours) were significantly shorter (P < .05). Aortic root repair and total arch replacement were more frequent (66.7% vs 82.9% [P = .003] and 20.6% vs 40% [P = .001]). Cardiopulmonary bypass and ischemia times were also shorter (179.7 minutes vs 148.2 minutes [P = .001] and 105 minutes vs 91.2 minutes [P = .022]). Incidence of prolonged mechanical ventilation (53.9% vs 34.3%, P = .011), major stroke (17.7% vs 7.1%, P = .047), and 30-day mortality (27.5% vs 7.1%, P = .001) decreased significantly. CONCLUSIONS: An Aorta Code can be successfully implemented by using a standardized protocol within a hospital network. The number of cases increased; time to diagnosis, transfer, and operating room were reduced; and 30- day mortality significantly decreased.


Subject(s)
Acute Aortic Syndrome , Aortic Dissection , Humans , Retrospective Studies , Aorta/surgery , Aortic Dissection/diagnosis , Aortic Dissection/surgery , Cardiopulmonary Bypass , Treatment Outcome , Aorta, Thoracic/surgery
6.
JAMA Oncol ; 9(8): 1108-1112, 2023 08 01.
Article in English | MEDLINE | ID: mdl-37166782

ABSTRACT

Importance: Little is known about the risk of post-COVID-19 multisystem inflammatory syndrome in children (MIS-C) in the setting of childhood cancer. Objective: To evaluate factors associated with MIS-C and describe the clinical course of COVID-19 in the setting of MIS-C. Design, Setting, and Participants: Multisite observational cohort study of a registry representing more than 100 US pediatric oncology sites. All included patients were registered between April 1, 2020, and May 18, 2022. Sites submitted deidentified data surrounding sociodemographics, cancer diagnosis and treatment, and COVID-19 course (symptoms, maximum support required, outcome). Patients with MIS-C (n = 24) were compared with matched controls (n = 96). Children (<21 years) with cancer who developed COVID-19 while receiving cancer treatment or within 1 year of completing treatment were characterized based on their development of MIS-C. Exposures: (1) Clinical and sociodemographic characteristics of children with cancer and COVID-19; and (2) MIS-C. Main Outcomes and Measures: (1) Development of MIS-C among children with cancer and COVID-19; and (2) symptoms and disease severity associated with MIS-C. Results: Among 2035 children with cancer and COVID-19, 24 (1.2%) developed MIS-C. COVID-19 occurred at a median (IQR) age of 12.5 (5.5-17.1) years in those with MIS-C and 11 (6-16) years among matched controls (P = .86). The majority of children with MIS-C had a hematologic cancer (83.3% [n = 20]), were publicly insured (66.7% [n = 16]), and were Hispanic (54.2% [n = 13]). Half (n = 12) had 1 or more noncancer comorbidity. Those with comorbidities were more likely to develop MIS-C than those without (odds ratio [OR], 2.5 [95% CI, 1.1-5.7]). Among children with MIS-C, 100% (n = 24) were admitted to the hospital and 54.2% (n = 13) to the intensive care unit (ICU), while COVID-19 contributed to the death of 20.1% (n = 5); cancer therapy was changed in 62.5% (n = 15). Compared with matched controls, those with MIS-C had higher odds of symptoms classified as systemic (OR, 4.7 [95% CI, 1.4-15.8]) or gastrointestinal (OR, 5.0 [95% CI, 1.7-14.6]) along with higher odds of hospitalization (OR, 42.9 [95% CI, 7.1-258]), ICU admission (OR, 11.4 [95% CI, 3.6-36.4]), and changes to cancer therapy (OR, 24.9 [95% CI, 6.5-94.8]). Conclusions and Relevance: In this cohort study among children with cancer and COVID-19, those with MIS-C had a more severe clinical course than those without MIS-C. The risk of MIS-C and its severity are important to consider as clinicians monitor patients with COVID-19. These findings can inform their conversations with families regarding COVID-19 risks and the benefits of prevention strategies that are pharmacologic (vaccination) and nonpharmacologic (masking), as well as treatment (antivirals, monoclonal antibodies).


Subject(s)
COVID-19 , Neoplasms , Child , Humans , Adolescent , COVID-19/complications , COVID-19/epidemiology , COVID-19/therapy , SARS-CoV-2 , Cohort Studies , Risk Factors , Neoplasms/epidemiology , Neoplasms/therapy , Disease Progression
7.
Rev. ADM ; 80(1): 18-23, ene.-feb. 2023. ilus
Article in Spanish | LILACS | ID: biblio-1510578

ABSTRACT

Los modelos de estudio son un registro fundamental para el diagnóstico, el plan de tratamiento, la presentación de caso y la evaluación del progreso del tratamiento dental; son registros anatomofisiológicos de las arcadas dentarias que sirven para evaluar la dentición en los tres planos del espacio y la oclusión en la relación cúspide-fosa, en una dimensión estática y dinámica. Para obtener los modelos de estudio es imprescindible obtener impresiones totales con diversos materiales de impresión de los arcos dentarios, que reproduzcan fielmente todos los detalles anatómicos, para posteriormente obtener un modelo en yeso piedra. Los modelos obtenidos a partir de una impresión generalmente son a base de yeso odontológico, los cuales a pesar de sus mejoras aún conservan algunas características negativas como: baja resistencia a la fractura por impacto, baja resistencia al desgaste por abrasión, inestabilidad dimensional y radiopacidad que impide la simulación de procedimientos endodóncicos. Con la finalidad de mejorar la simulación en la práctica odontológica, se usa la resina epóxica que puede emplearse en la obtención de modelos, este material es más resistente y presenta una mayor resistencia a la abrasión; además es radiolúcido, por lo que es útil para la réplica de preparaciones y procedimientos de simulación endodóntica. Los detalles de la superficie obtenidos con resina epóxica son superiores a los obtenidos con yeso. El uso de simuladores es una herramienta educativa con la que se favorece la adquisición de ciertas habilidades, destrezas, técnicas y competencias necesarias para la formación de estudiantes o profesionales de odontología. En el presente trabajo se describe la técnica para la elaboración de modelos dentales didácticos en resina epóxica para utilizarlos en la enseñanza de la práctica odontológica (AU)


Study studies are a fundamental record for diagnosis, treatment plan, case presentation and evaluation of the progress of dental treatment. They are anatomo-physiological records of the dental arches to evaluate the dentition in the three planes of space and the occlusion in the cusp-fossa relationships, in a static and dynamic dimension. To obtain the study models, it is essential to obtain total impressions with various impression materials of the dental arches, which faithfully reproduce all the anatomical details, in order to later obtain a stone plaster model. Those obtained from an impression are generally based on dental plaster, which despite its improvements still retain some negative characteristics such as: low resistance to fracture by impact, low resistance to wear by abrasion, dimensional instability and radio opacity that prevents the simulation of endodontic procedures. In order to improve simulation in dental practice, the use of epoxy resin can be used to obtain models, this material is more resistant and has greater resistance to abrasion, it is radiolucent, which makes them Useful for replicating preparations and endodontic simulation procedures, the surface details obtained with epoxy resin are superior to those obtained with plaster. The use of simulators is an educational tool that favors the acquisition of certain abilities, skills, techniques and competencies necessary for the training of the student or professional in dentistry. In the present work, the technique for the elaboration of didactic dental models in epoxy resin to be used in the teaching of dental practice is described.(AU)


Subject(s)
Computer Simulation , Models, Educational
8.
Exp Brain Res ; 241(2): 417-425, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36571635

ABSTRACT

Intermittent ethanol consumption changes the neuronal activity of the orbitofrontal cortex (OFC) in rodents, which has been attributed to important participation in the development of addiction, particularly alcoholism. The OFC participates in gustatory sensory integration. However, it is unknown whether this region can encode chemosensory elements of oral ethanol administration independently of the consumption movement (orofacial motor response) when administered for the first time (naïve mice). To answer this question, we used a sedated mouse model and a temporary analysis protocol to register extracellular neuronal responses during the oral administration of ethanol. Our results show an increase in neuronal frequency (in the first 500 ms) when low (0.6, 1, and 2.1 M) and high (3.2, 4.3, and 8.6 M) concentrations of ethanol are orally administered. The modulatory effect of ethanol was observed from low and high concentrations and differed from the tastants. There was consistent neuronal activity independent of the concentration of ethanol. Our results demonstrate a sensory representation of oral ethanol stimulation in the OFC neurons of naïve mice under sedation.


Subject(s)
Alcoholism , Ethanol , Mice , Animals , Ethanol/pharmacology , Prefrontal Cortex/physiology , Neurons/physiology , Sensation
9.
Exp Brain Res ; 240(10): 2747-2756, 2022 Oct.
Article in English | MEDLINE | ID: mdl-36063191

ABSTRACT

Type 2 diabetes mellitus (T2DM) is a global health problem for many reasons including the comorbidities, such as diabetic neuropathy (DPN), which is the most common. It has been suggested that aerobic training can improve metabolic health in individuals with T2DM. Still, the effect of aerobic training on DPN signs and its relationship with serum levels of tumor necrosis tumor alpha (TNF-α), an essential molecule in T2DM development, is unknown. We evaluated the effect of two intensities of aerobic training in adult male C57BL/6 mice divided into six groups: sedentary control (CTRL), control with low-intensity training (CTRL-LI), control with moderate-intensity training (CTRL-MI), T2DM sedentary (T2DM), T2DM with low-intensity training (T2DM-LI), and T2DM with moderate-intensity training (T2DM-MI). We induced the T2DM model by combining a hypercaloric diet and low doses of streptozotocin. We measured serum TNF-α levels and correlated them with peripheral sensitization and the cardinal signs of T2DM in mice. Moderate intensity aerobic training decreased the symptoms of DPN and improved metabolic health in T2DM. Interestingly, decreased TNF-α serum levels correlated with reduced peripheral thermal sensitivity and mechanical sensitivity by aerobic training. Moderate intensity aerobic training counteracts the development and symptoms of DPN and improve metabolic health in T2DM. Decreased TNF-α correlates with reduced peripheral thermal sensitivity and mechanical sensitivity by aerobic training.


Subject(s)
Diabetes Mellitus, Type 2 , Animals , Male , Mice , Diabetes Mellitus, Type 2/therapy , Mice, Inbred C57BL , Streptozocin , Tumor Necrosis Factor-alpha
10.
Odovtos (En línea) ; 24(2)ago. 2022.
Article in English | LILACS, SaludCR | ID: biblio-1386589

ABSTRACT

Abstract Evidence has been reported that shows that somatosensory perception can be altered by a trigeminal injury resulting from maxillofacial surgical procedures. However, the surgical procedures that most frequently cause trigeminal lesions and the risk factors are unknown. In the same way, there is little information on what has been determined in preclinical models of trigeminal injury. This article integrates relevant information on trigeminal injury from both clinical findings and primary basic science studies. This review shows that the age and complexity of surgical procedures are essential to induce orofacial sensory alterations.


Resumen Se han reportado evidencias que demuestran que la percepción somatosensorial puede ser alterada por la lesión trigeminal producto de procedimientos quirúrgicos maxilofaciales. Sin embargo, se desconoce cuáles son los procedimientos quirúrgicos que más frecuentemente producen lesiones trigeminales, y los factores de riesgo. De la misma forma hay poca información sobre lo que se ha determinado en modelos preclínicos de lesión trigeminal. El objetivo de este artículo es integrar información relevante sobre la lesión trigeminal desde los hallazgos clínicos como los principales estudios de ciencia básica. Esta revisión demuestra que la edad y el tipo de procedimiento son fundamentales para inducir alteraciones sensoriales orofaciales, así como los procesos neurobiológicos que subyacen a estos padecimientos.


Subject(s)
Humans , Surgery, Oral , Somatosensory Disorders , Facial Pain , Trigeminal Nerve Injuries
11.
Cancer ; 128(2): 391-400, 2022 01 15.
Article in English | MEDLINE | ID: mdl-34614197

ABSTRACT

BACKGROUND: Regional studies show that children with cancer receive medically intense end-of-life (EOL) care, but EOL care patterns, including palliative care utilization in Alabama, remain unknown. METHODS: This was a retrospective study of 233 children (0-19 years) who received cancer-directed therapy at Children's of Alabama and died from 2010 through 2019. Rates and disparities in palliative care utilization and the association between palliative care and intense EOL care, death location, and hospice were examined. RESULTS: The median death age was 11 years; 62% were non-Hispanic White. Forty-one percent had a non-central nervous system (CNS) solid tumor. Fifty-eight percent received palliative care, and 36% received early palliative care (≥30 days before death). Children without relapsed/refractory disease were less likely to receive palliative care than those who had relapsed/refractory disease (adjusted odds ratio [aOR], 0.2; 95% confidence interval [CI], 0.1-0.7). Children with CNS tumors and hematologic malignancies were less likely to have early palliative care (aOR for CNS tumors, 0.4; 95% CI, 0.2-0.7; aOR for hematologic malignancies, 0.3; 95% CI, 0.2-0.7) than children with non-CNS solid tumors. Late palliative care (vs none) was associated with more medically intense care (aOR, 3.3; 95% CI, 1.4-7.8) and hospital death (aOR, 4.8; 95% CI, 1.9-11.6). Early palliative care (vs none) was associated with more hospice enrollment (aOR, 3.4; 95% CI, 1.5-7.6) but not medically intense care (aOR, 1.3; 95% CI, 0.6-2.9) or hospital death (aOR, 1.8; 95% CI, 0.8-3.7). CONCLUSIONS: Fifty-eight percent of children dying of cancer in Alabama receive palliative care, but EOL care varies with the receipt and timing (early vs late) of palliative care. Whether this variation reflects differences in child and family preferences or systemic factors (eg, hospice access) remains unknown.


Subject(s)
Hospice Care , Neoplasms , Terminal Care , Alabama/epidemiology , Child , Humans , Neoplasms/therapy , Palliative Care , Retrospective Studies
12.
J Clin Oncol ; 39(34): 3778-3788, 2021 12 01.
Article in English | MEDLINE | ID: mdl-34694886

ABSTRACT

PURPOSE: The Pediatric Oncology COVID-19 Case Report registry supplies pediatric oncologists with data surrounding the clinical course and outcomes in children with cancer and SARS-CoV-2. METHODS: This observational study captured clinical and sociodemographic characteristics for children (≤ 21 years) receiving cancer therapy and infected with SARS-CoV-2 from the pandemic onset through February 19, 2021. The demographic and clinical characteristics of the cohort were compared with population-level pediatric oncology data (SEER). Multivariable binomial regression models evaluated patient characteristics associated with hospitalization, intensive care unit (ICU) admission, and changes in cancer therapy. RESULTS: Ninety-four institutions contributed details on 917 children with cancer and SARS-CoV-2. Median age at SARS-CoV-2 infection was 11 years (range, 0-21 years). Compared with SEER, there was an over-representation of Hispanics (43.6% v 29.7%, P < .01), publicly insured (59.3% v 33.5%, P < .01), and patients with hematologic malignancies (65.8% v 38.3%, P < .01) in our cohort. The majority (64.1%) were symptomatic; 31.2% were hospitalized, 10.9% required respiratory support, 9.2% were admitted to the ICU, and 1.6% died because of SARS-CoV-2. Cancer therapy was modified in 44.9%. Hispanic ethnicity was associated with changes in cancer-directed therapy (adjusted risk ratio [aRR] = 1.3; 95% CI, 1.1 to 1.6]). Presence of comorbidities was associated with hospitalization (aRR = 1.3; 95% CI, 1.1 to 1.6) and ICU admission (aRR = 2.3; 95% CI, 1.5 to 3.6). Hematologic malignancies were associated with hospitalization (aRR = 1.6; 95% CI, 1.3 to 2.1). CONCLUSION: These findings provide critical information for decision making among pediatric oncologists, including inpatient versus outpatient management, cancer therapy modifications, consideration of monoclonal antibody therapy, and counseling families on infection risks in the setting of the SARS-CoV-2 pandemic. The over-representation of Hispanic and publicly insured patients in this national cohort suggests disparities that require attention.


Subject(s)
COVID-19/complications , Ethnicity/statistics & numerical data , Health Status Disparities , Hospitalization/statistics & numerical data , Neoplasms/virology , Registries/statistics & numerical data , SARS-CoV-2/isolation & purification , Adolescent , Adult , COVID-19/virology , Child , Child, Preschool , Cohort Studies , Comorbidity , Female , Humans , Infant , Infant, Newborn , Male , Neoplasms/drug therapy , Neoplasms/epidemiology , Risk Factors , United States/epidemiology , Young Adult , COVID-19 Drug Treatment
13.
Molecules ; 26(18)2021 Sep 08.
Article in English | MEDLINE | ID: mdl-34576935

ABSTRACT

The drying of fruit juices has advantages such as easy handling of powders, reduction in volume, and preservation of the characteristics of the fruit. Thus, in this work, the effect of the spray drying conditions of strawberry juice (SJ) with maltodextrin (MX) as a carrying agent on the microencapsulation of bioactive compounds and physicochemical properties was studied. The content of phenolic compounds and antioxidant activity showed higher values at low concentrations of MX, while the effect of drying temperature was negligible. The thermal characterization showed that the low molecular weight sugars in the juice decreased the glass transition temperature (Tg). The morphological analysis by scanning electron microscopy (SEM) indicated that at low concentrations of MX, the particles agglomerated, while at intermediate and high concentrations, the particles were observed as well separated. Through microstructural analysis by X-ray diffraction (XRD), the presence of amorphous state was confirmed in all the samples, which is beneficial for preventing chemical and biochemical reactions, and promoting the conservation of the microencapsulated bioactive compounds.


Subject(s)
Drug Compounding/methods , Fragaria/chemistry , Powders/chemistry , Antioxidants/chemistry , Fruit and Vegetable Juices , Microscopy, Electron, Scanning , Phenols/analysis , Polysaccharides/chemistry , Spray Drying , Temperature , Thermogravimetry , X-Ray Diffraction
14.
J Am Chem Soc ; 143(34): 13525-13537, 2021 09 01.
Article in English | MEDLINE | ID: mdl-34398608

ABSTRACT

The mechanism by which informational polymers first formed on the early earth is currently unknown. The RNA world hypothesis implies that RNA oligomers were produced prebiotically, before the emergence of enzymes, but the demonstration of such a process remains challenging. Alternatively, RNA may have been preceded by an earlier ancestral polymer, or proto-RNA, that had a greater propensity for self-assembly than RNA, with the eventual transition to functionally superior RNA being the result of chemical or biological evolution. We report a new class of nucleic acid analog, depsipeptide nucleic acid (DepsiPNA), which displays several properties that are attractive as a candidate for proto-RNA. The monomers of depsipeptide nucleic acids can form under plausibly prebiotic conditions. These monomers oligomerize spontaneously when dried from aqueous solutions to form nucleobase-functionalized depsipeptides. Once formed, these DepsiPNA oligomers are capable of complementary self-assembly and are resistant to hydrolysis in the assembled state. These results suggest that the initial formation of primitive, self-assembling, informational polymers on the early earth may have been relatively facile if the constraints of an RNA-first scenario are relaxed.


Subject(s)
Depsipeptides/chemistry , Nucleic Acids/chemistry , Prebiotics/analysis , Hydrolysis , Polymers/chemistry , Triazines/chemistry
15.
Eur Heart J Case Rep ; 5(3): ytab056, 2021 Mar.
Article in English | MEDLINE | ID: mdl-34113759

ABSTRACT

BACKGROUND: Coronary subclavian steal syndrome (CSSS) is an uncommon complication observed in patients after coronary artery bypass surgery with left internal mammary artery (LIMA) grafts. It is defined as coronary ischaemia due to reversal flow from the LIMA to the left subclavian artery (SA) when a proximal left SA stenosis is present. In practice, the entire clinical spectrum of ischaemic heart disease, ranging from asymptomatic patients to acute myocardial infarction, may be encountered. CASE SUMMARY: Three cases of CSSS recently detected at our hospital are being described. Two patients presented with an acute coronary syndrome, so diagnosis was suspected based on coronary angiography findings, as retrograde blood flow from LIMA to the distal SA was present. Myocardial ischaemia was documented by myocardial perfusion scintigraphy in one case. The third patient was asymptomatic and CSSS was suspected during physical examination and confirmed by computed tomography (CT). Endovascular intervention with balloon-expandable stent implantation of the stenotic SA was performed by vascular surgeons in all patients. No periprocedural complications occurred, and complete resolution of symptoms was achieved. DISCUSSION: In CSSS, subclavian angiography is the standard diagnostic test. However, other diagnostic techniques may be valuable to better clarify this challenging diagnosis. In the herein small series, the usefulness of a multimodality imaging approach including Doppler ultrasound, myocardial perfusion scintigraphy, and CT is well demonstrated. Furthermore, this study endorses the safety and utility of endovascular treatment in different clinical scenarios, including asymptomatic patients.

16.
Cancer ; 127(14): 2571-2578, 2021 07 15.
Article in English | MEDLINE | ID: mdl-33784408

ABSTRACT

BACKGROUND: The quality of adult end-of-life (EOL) cancer care has benefited from quality measures, but corresponding pediatric measures are lacking. Therefore, the authors used a validated expert panel method to recommend EOL quality measures for pediatric oncology. METHODS: The authors used the modified Delphi method to assess potential quality measures. Panelists were selected on the basis of professional organization nominations and expert qualifications. Pediatric and adult oncology, pediatric palliative care, social work, nursing, and hospice were represented. The authors provided the panel with a literature review on 20 proposed measures derived from adult measures and bereaved family interviews. The panel first scored the importance of each measure on a 9-point scale and then discussed the measures via a conference call. The panel then rescored the measures. According to a priori standards, measures with median scores ≥ 7 with at least 7 of 9 experts ranking it as ≥4 were endorsed. RESULTS: The 16 endorsed measures included measures related to avoidance of medically intense care (eg, intensive care unit death and intubation in the last 14 days of life), death location (eg, death in the preferred location), hospital policies/programs (eg, the removal of visitor restrictions at EOL and the presence of a bereavement program), and supportive care services (eg, pediatric palliative care involvement and sibling needs assessment). Unendorsed measures included avoidance of chemotherapy at EOL and home death. CONCLUSIONS: Expert panel-endorsed quality measures have been developed for EOL care in pediatric oncology. The measures need validation with bereaved families and further refinement before they are ready for real-world application as a tool for standardizing EOL care in pediatric oncology. LAY SUMMARY: Quality measures for end-of-life care for children with cancer lag behind adult quality measures. Therefore, the authors have conducted an expert panel to develop an endorsed list of quality measures for end-of-life care for children with cancer. The 16 endorsed measures include measures related to avoidance of medically intense care (eg, intensive care unit death and intubation in the last 14 days of life), location of death (eg, death in the preferred location), hospital policies/programs (eg, the removal of visitor restrictions at the end of life and the presence of a bereavement program), and supportive care services (eg, pediatric palliative care involvement and sibling needs assessment).


Subject(s)
Hospice Care , Neoplasms , Terminal Care , Adult , Child , Hospice Care/methods , Humans , Neoplasms/therapy , Palliative Care/methods , Quality Indicators, Health Care , Terminal Care/methods
18.
In. Valcárcel Izquierdo, Norberto; Díaz Díaz, Alejandro Antuán. Epistemología de las ciencias de la educación médica: sistematización cubana. La Habana, Editorial Ciencias Médicas, 2021. .
Monography in Spanish | CUMED | ID: cum-77649
19.
Oncol Rep ; 44(6): 2353-2363, 2020 12.
Article in English | MEDLINE | ID: mdl-33125103

ABSTRACT

Breast cancer is the most common type of cancer with the highest morbidity and mortality rates in women worldwide. Recent efforts to improve the current antitumor therapies have led to the development of novel treatment approaches based on the delivery of therapeutic non­coding RNAs (ncRNAs) using nanotechnology. Treatment methods using lipid­based nanoparticles (LBNPs) have greatly improved the delivery efficiency of ncRNAs into tumor cells and tissues. This type of delivery approach has provided significant advantages, such as reduced therapeutic doses, lower cytotoxicity to normal cells and the ability to reverse resistance to chemotherapy. LBNPs have demonstrated the ability to deliver therapeutic ncRNAs, more specifically microRNAs (miRNAs) and small interfering RNAs (siRNAs); this has been reported modulate the expression levels of oncogenes and tumor suppressor genes involved in several biological processes, including cell growth and proliferation, cell death, invasion and metastasis, thus impairing the malignant behavior of tumors. Therefore, ncRNA­based therapies combined with the LBNP delivery strategy, namely nanomiRNAs, may represent a promising antitumor strategy guaranteeing superior biocompatibility, higher biodegradability, lower immunogenicity and decreased toxicity to normal cells compared with other therapeutic approaches. The present review summarized the current knowledge of the application of LBNPs for delivering miRNAs and siRNAs in breast cancer cells and mouse models, in addition to discussing their promising antitumor effects.


Subject(s)
Antineoplastic Agents/administration & dosage , Breast Neoplasms/drug therapy , Lipids/chemistry , MicroRNAs/administration & dosage , RNA, Small Interfering/administration & dosage , Animals , Breast/pathology , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Cell Line, Tumor , Disease Models, Animal , Female , Gene Expression Regulation, Neoplastic/drug effects , Humans , Injections, Intralesional , Liposomes , Mice , Nanoparticles/chemistry , Xenograft Model Antitumor Assays
20.
J Oral Maxillofac Surg ; 78(12): 2169-2181, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32866484

ABSTRACT

PURPOSE: To characterize adequate study of chronic neuropathic orofacial pain induced by a mental nerve injury in a mouse model, we propose a behavioral assessment of its dimensions: sensory, affective, and cognitive. MATERIALS AND METHODS: Trigeminal injury was induced by a chronic mental nerve constriction (MnC). Behavioral tests were conducted to assess the different dimensions of pain and to evaluate the general well-being of mice. RESULTS: Rodents who went through MnC showed signs of mechanical hyperalgesia and increased escape/avoidance behavior. They showed no alterations in general well-being behaviors, yet the injury was sufficient to induce impairment in the ability to adapt to the environmental requirements. CONCLUSIONS: MnC injury is an efficient model for the study of orofacial pain in mice, capable of inducing impairment in the different dimensions of pain. Intensity and temporality of its effects make our model less aggressive, yet effective to generate cognitive impairment. This work provides a solid foundation for the study of the neural circuits involved in the processing of neuropathic orofacial pain.


Subject(s)
Neuralgia , Animals , Cognition , Disease Models, Animal , Facial Pain/etiology , Hyperalgesia , Mice , Neuralgia/etiology , Pain Measurement
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