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1.
Nature ; 598(7882): 611-617, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34707305

RESUMEN

Access to safely managed drinking water (SMDW) remains a global challenge, and affects 2.2 billion people1,2. Solar-driven atmospheric water harvesting (AWH) devices with continuous cycling may accelerate progress by enabling decentralized extraction of water from air3-6, but low specific yields (SY) and low daytime relative humidity (RH) have raised questions about their performance (in litres of water output per day)7-11. However, to our knowledge, no analysis has mapped the global potential of AWH12 despite favourable conditions in tropical regions, where two-thirds of people without SMDW live2. Here we show that AWH could provide SMDW for a billion people. Our assessment-using Google Earth Engine13-introduces a hypothetical 1-metre-square device with a SY profile of 0.2 to 2.5 litres per kilowatt-hour (0.1 to 1.25 litres per kilowatt-hour for a 2-metre-square device) at 30% to 90% RH, respectively. Such a device could meet a target average daily drinking water requirement of 5 litres per day per person14. We plot the impact potential of existing devices and new sorbent classes, which suggests that these targets could be met with continued technological development, and well within thermodynamic limits. Indeed, these performance targets have been achieved experimentally in demonstrations of sorbent materials15-17. Our tools can inform design trade-offs for atmospheric water harvesting devices that maximize global impact, alongside ongoing efforts to meet Sustainable Development Goals (SDGs) with existing technologies.

2.
Proc Natl Acad Sci U S A ; 119(32): e2121390119, 2022 08 09.
Artículo en Inglés | MEDLINE | ID: mdl-35878009

RESUMEN

Infants are born into networks of individuals who are socially connected. How do infants begin learning which individuals are their own potential social partners? Using digitally edited videos, we showed 12-mo-old infants' social interactions between unknown individuals and their own parents. In studies 1 to 4, after their parent showed affiliation toward one puppet, infants expected that puppet to engage with them. In study 5, infants made the reverse inference; after a puppet engaged with them, the infants expected that puppet to respond to their parent. In each study, infants' inferences were specific to social interactions that involved their own parent as opposed to another infant's parent. Thus, infants combine observation of social interactions with knowledge of their preexisting relationship with their parent to discover which newly encountered individuals are potential social partners for themselves and their families.


Asunto(s)
Aprendizaje , Padres , Interacción Social , Humanos , Lactante
3.
Pediatr Transplant ; 28(1): e14671, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38317335

RESUMEN

BACKGROUND: Adolescent solid organ transplant recipients (aSOTRs) who received three doses of the COVID-19 mRNA vaccine experience high seroconversion rates and antibody persistence for up to 3 months. Long-term antibody durability beyond this timeframe following three doses of the SARS-CoV-2 mRNA vaccine remains unknown. We describe antibody responses 6 months following the third vaccine dose (D3) of the BNT162b2 mRNA vaccination among aSOTRs. METHODS: Participants in a multi-center, observational cohort who received the third dose of the vaccine were analyzed for antibodies to the SARS-CoV-2 spike protein receptor-binding domain (Roche Elecsys anti-SARS-CoV-2-S positive: ≥0.8, maximum: >2500 U/mL). Samples were collected at 1-, 3-, and 6-months post-D3. Participants were surveyed at each timepoint and at 12-months post-D3. RESULTS: All 34 participants had positive anti-RBD antibody titers 6 months post-D3. Variations in titers occurred between 3 and 6 months post-D3, with 8/28 (29%) having decreased antibody levels at 6 months compared to 3 months and 2/28 (7%) reporting increased titers at 6 months. The remaining 18/28 (64%) had unchanged antibody titers compared to 3-month post-D3 levels. A total of 4/34 (12%) reported breakthrough infection within 6 months and 3/32 (9%) reported infection after 6-12 months following the third dose of the SARS-CoV-2 mRNA vaccine. CONCLUSIONS: The results suggest that antibody durability persists up to 6 months following three doses of the SARS-CoV-2 mRNA in aSOTRs. Demography and transplant characteristics did not differ for those who experienced antibody weaning. Breakthrough infections did occur, reflecting immune-evasive nature of novel variants such as Omicron.


Asunto(s)
COVID-19 , Trasplante de Órganos , Glicoproteína de la Espiga del Coronavirus , Adolescente , Humanos , Anticuerpos , Anticuerpos Antivirales , Vacuna BNT162 , COVID-19/prevención & control , Vacunas contra la COVID-19 , Vacunas de ARNm , ARN Mensajero , SARS-CoV-2 , Receptores de Trasplantes , Vacunación , Estudios de Cohortes
4.
Int J Neuropsychopharmacol ; 26(1): 80-90, 2023 01 19.
Artículo en Inglés | MEDLINE | ID: mdl-36402549

RESUMEN

BACKGROUND: Reward-related learning, where animals form associations between rewards and stimuli (i.e., conditioned stimuli [CS]) that predict or accompany those rewards, is an essential adaptive function for survival. METHODS: In this study, we investigated the mechanisms underlying the acquisition and performance of conditioned approach learning with a focus on the role of muscarinic acetylcholine (mACh) and NMDA glutamate receptors in the substantia nigra (SN), a brain region implicated in reward and motor processes. RESULTS: Using RNAscope in situ hybridization assays, we found that dopamine neurons of the SN express muscarinic (mACh5), NMDA2a, NMDA2b, and NMDA2d receptor mRNA but not mACh4. NMDA, but not mACh5, receptor mRNA was also found on SN GABA neurons. In a conditioned approach paradigm, rats were exposed to 3 or 7 conditioning sessions during which light/tone (CS) presentations were paired with delivery of food pellets, followed by a test session with CS-only presentations. Intra-SN microinjections of scopolamine (a mACh receptor antagonist) or AP-5 (a NMDA receptor antagonist) were made either prior to each conditioning session (to test their effects on acquisition) or prior to the CS-only test (to test their effects on expression of the learned response). Scopolamine and AP-5 produced dose-dependent significant reductions in the acquisition, but not performance, of conditioned approach. CONCLUSIONS: These results suggest that SN mACh and NMDA receptors are key players in the acquisition, but not the expression, of reward-related learning. Importantly, these findings redefine the role of the SN, which has traditionally been known for its involvement in motor processes, and suggest that the SN possesses attributes consistent with a function as a hub of integration of primary reward and CS signals.


Asunto(s)
N-Metilaspartato , Receptores de N-Metil-D-Aspartato , Ratas , Animales , Receptores de N-Metil-D-Aspartato/metabolismo , Recompensa , Escopolamina/farmacología , Colinérgicos , Sustancia Negra/metabolismo
5.
J Am Pharm Assoc (2003) ; 63(5): 1612-1616, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37301509

RESUMEN

BACKGROUND: Management of type 2 diabetes mellitus (T2DM) in patients with end-stage renal disease (ESRD) remains a challenge given limited data. Although current guidelines recommend use of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) for the treatment of T2DM in patients with concomitant chronic kidney disease, supporting safety and efficacy evidence is lacking for patients with ESRD or hemodialysis. OBJECTIVE: This retrospective study was conducted to evaluate the efficacy and safety of GLP-1 RAs for the treatment of T2DM in patients with ESRD. DESIGN, SETTING, AND PARTICIPANTS: This is a single-centered, multifacility retrospective cohort analysis. Patients were included if they had a diagnosis of T2DM and ESRD and were prescribed a GLP-1 RA. Patients were excluded if the GLP-1 RA was prescribed solely for weight loss. OUTCOME MEASURES: The primary outcome was change in A1C. Secondary outcomes included (1) incidence of acute kidney injury (AKI), (2) change in weight, (3) change in estimated glomerular filtration rate, (4) ability to discontinue basal or bolus insulin, and (5) incidence of emergent hypoglycemia. RESULTS: There were 46 unique patients and 64 individual GLP-1 RA prescriptions included. The mean reduction in A1C was 0.8%. There were 10 incidences of AKI, although none occurred in the semaglutide cohort. Emergent hypoglycemia occurred in 3 patients who were all prescribed concomitant insulin. CONCLUSION: Results from this retrospective review provide additional real-world data on use of GLP-1 RAs in this unique population. Prospective studies to control for confounding factors are warranted given that GLP-1RAs are a safer alternative to insulin in this high-risk population.


Asunto(s)
Lesión Renal Aguda , Diabetes Mellitus Tipo 2 , Hipoglucemia , Fallo Renal Crónico , Humanos , Lesión Renal Aguda/inducido químicamente , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Péptido 1 Similar al Glucagón , Receptor del Péptido 1 Similar al Glucagón/agonistas , Hemoglobina Glucada , Hipoglucemia/inducido químicamente , Hipoglucemiantes/efectos adversos , Insulina , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/inducido químicamente , Estudios Prospectivos , Estudios Retrospectivos
6.
J Contemp Dent Pract ; 24(2): 107-112, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-37272142

RESUMEN

AIM: The aim of the present study was to evaluate labiopalatal angulation of maxillary anterior teeth using Custom-made jig, Profile projector, and ImageJ computer software methods. MATERIALS AND METHODS: The subjects for this study were selected in the age-group of 20-30 years having permanent dentition, including 2nd molars and bilateral Angle's class 1 molar and canine relationship. Recording the labiopalatal angulation in proximal view was carried out by using one manual method and two digital methods namely using Custom-made jig, Profile projector, and ImageJ computer software, respectively. Alginate impressions were made for the subjects, and the spatial relationship of the maxilla to the cranium was recorded using a facebow. The casts were mounted in a semi-adjustable articulator, and the articulated mounted casts with the mounting ring were transferred to the Custom-made jig, and angulations were measured in proximal view. Digital methods of measurement were recorded by using Profile projector and ImageJ computer software methods. Data were tabulated and statistically analyzed. RESULTS: In males, the mean labiopalatal angulation of maxillary right and left maxillary canines of Custom-made jig was 91.94 ± 1.47 and 91.70 ± 1.68, in Profile projector method 87.41 ± 3.75 and 87.58 ± 3.79, and in ImageJ computer software 84.23 ± 5.72 and 83.29 ± 6.74, respectively. In females, Custom-made jig was 91.82 ± 1.55 and 92.17 ± 1.84, in Profile projector method 86.70 ± 5.58 and 86.94 ± 5.57, and in ImageJ computer software 82.76 ± 6.34 and 83.05 ± 6.12, respectively. There was a very high statistically significant difference found between different methods. CONCLUSION: In conclusion, the values obtained in the digital methods (i.e., both the Profile projector and ImageJ computer software) were more accurate than the manual method. However, the ImageJ computer software was most reliable in comparison with the values obtained in Profile projector. CLINICAL SIGNIFICANCE: The labiopalatal angulation of anterior teeth will act as a guideline in re-establishing the correct angulations and the anatomic contours of the maxillary arch to achieve the desired esthetics that provide adequate lip support and to restore the required functions.


Asunto(s)
Estética Dental , Diente , Masculino , Femenino , Animales , Diente Molar , Programas Informáticos , Maxilar
7.
Dev Med Child Neurol ; 64(6): 789-798, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35080266

RESUMEN

AIM: To investigate the short-term efficacy and safety of high-dose pyridoxine and pyridoxal 5-phosphate (P5P) in the treatment of inherited glycosylphosphatidylinositol (GPI) deficiency-associated epilepsy. METHOD: Participants with genetically confirmed GPI deficiency were treated with oral pyridoxine or P5P as compassionate use in an agreed-upon clinical regimen. Pyridoxine (20-30 mg/kg/day) was used for 3 months. Baseline evaluation included 4 weeks of prospective seizure data and one video electroencephalogram (EEG). Seizure frequency was captured daily. The EEG was repeated after reaching maximum dosage of pyridoxine. Pyridoxine was switched to P5P (20-30 mg/kg/day) if seizure burden was unchanged after 3 months' treatment. Another EEG was done after 3 months of P5P treatment. Primary outcome measures were reduction of seizure frequency and EEG improvements. RESULTS: Seven participants (one female, six males; age range 5-23 year; mean age 11 years 10 months, SD 5 year 2 months) were included. The genetic causes of inherited GPI deficiency were phosphatidylinositol N-acetylglucosaminyltransferase subunit A/T/V deficiency. All had drug-resistant epilepsy and neurodevelopmental impairment. We observed more than 50% seizure frequency reduction in 2 out of 7 and less than 50% reduction in another 3 out of 7 participants. No participants reached seizure freedom. No remarkable changes in electrophysiological findings were observed in 6 out of 7 participants treated with pyridoxine or P5P when comparing the baseline and follow-up EEGs. INTERPRETATION: We observed no long-lasting electrophysiological improvements during treatment but pyridoxine may reduce seizure frequency or burden in inherited GPI deficiency. WHAT THIS PAPER ADDS: Inherited glycosylphosphatidylinositol (GPI) deficiency often causes early-onset and drug-resistant epilepsy. Vitamin B6 is a potential disease-specific treatment; however, efficacy and safety are ill-defined. Pyridoxine may reduce seizure frequency or burden in inherited GPI deficiency. Pyridoxine and P5P could prove to be a useful treatment in some individuals with inherited GPI deficiency and epilepsy.


Asunto(s)
Epilepsia Refractaria , Epilepsia , Estudios de Cohortes , Epilepsia Refractaria/tratamiento farmacológico , Epilepsia/complicaciones , Epilepsia/tratamiento farmacológico , Epilepsia/genética , Femenino , Glicosilfosfatidilinositoles/deficiencia , Glicosilfosfatidilinositoles/uso terapéutico , Humanos , Lactante , Masculino , Fosfatos/uso terapéutico , Estudios Prospectivos , Fosfato de Piridoxal/uso terapéutico , Piridoxina/uso terapéutico , Convulsiones/tratamiento farmacológico , Convulsiones/etiología
8.
J Am Pharm Assoc (2003) ; 62(6): 1919-1924, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35927161

RESUMEN

OBJECTIVES: The primary objective was to evaluate chronic obstructive pulmonary disease (COPD) interventions in a pharmacist-led telemedicine clinic. Secondary objectives were to quantify emergency department (ED) visits and hospitalizations for COPD exacerbations. SETTING: A single-center, outpatient telemedicine clinic within the Veterans Affairs (VA) Tennessee Valley Healthcare System from January 2021 to June 2021. PRACTICE DESCRIPTION: Patients with an active COPD diagnosis and assigned to a primary care team within the local VA were reviewed for enrollment. Visits were conducted through VA video connect or telephone. During these appointments, pertinent information was collected and pharmacotherapy and nonpharmacotherapy interventions were implemented to optimize COPD management. PRACTICE INNOVATION: Visits were conducted by a postgraduate year 2 ambulatory care pharmacy resident under supervision of a clinical pharmacy specialist with a scope of practice. Appointments were virtual to reduce coronavirus disease 2019 exposure and increase access to care. Patients were identified through a COPD patient report and provider referral to target high-risk patients. EVALUATION: Interventions made were documented at each visit. Chart review and patient interview were used to quantify ED visits or hospitalizations for COPD exacerbations occurring the year before or during clinic enrollment. RESULTS: Of 82 charts reviewed, 18 patients were eligible for enrollment. Eleven were followed as 7 patients did not show for initial visits. A total of 31 COPD interventions occurred including 13 nonpharmacotherapy (i.e., inhaler education, smoking cessation) and 18 pharmacotherapy (i.e., optimization of COPD regimens). An average of 3 COPD interventions were completed per patient followed. No ED visits and 2 hospitalizations for a COPD exacerbation occurred during the study period. This cohort had 1 ED visit and 10 hospitalizations the year before enrollment. CONCLUSION: This telemedicine clinic experience, albeit a small study population, suggests an opportunity for pharmacists to provide pharmacotherapy and nonpharmacotherapy interventions, which may improve COPD-related outcomes and access to care.


Asunto(s)
COVID-19 , Enfermedad Pulmonar Obstructiva Crónica , Telemedicina , Veteranos , Humanos , Farmacéuticos , Pacientes Ambulatorios , Enfermedad Pulmonar Obstructiva Crónica/diagnóstico , Enfermedad Pulmonar Obstructiva Crónica/tratamiento farmacológico
9.
Behav Brain Sci ; 45: e118, 2022 07 07.
Artículo en Inglés | MEDLINE | ID: mdl-35796353

RESUMEN

Group representations based on recursive utilities can be used to derive the same predictions as Pietraszewski in conflict situations. Additionally, these representations generalize to non-conflict situations, asymmetric relationships, and represent the stakes in a conflict. However, both proposals fail to represent asymmetries of power and responsibility and to account for generalizations from specific observed individuals to collections of non-observed individuals.


Asunto(s)
Conducta Social , Humanos
10.
Behav Brain Sci ; 45: e269, 2022 11 10.
Artículo en Inglés | MEDLINE | ID: mdl-36353875

RESUMEN

Actions that do not have instrumental goals can communicate social goals that are not rituals. Many non-instrumental actions such as bowing or kissing communicate a commitment to or roles in dyadic relationships. What is unclear is when people understand such actions in terms of ritual and when they understand them in terms of relationships.


Asunto(s)
Conducta Ceremonial , Humanos
11.
Clin Anat ; 34(4): 544-549, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-32196762

RESUMEN

INTRODUCTION: The deep fibular sensory nerve can be recorded to evaluate for peripheral nerve injury; however, it can be challenging in some individuals. Anatomic variation could account for some of this difficulty. Cadaver dissection and electrophysiological testing were used to characterize deep and superficial fibular sensory nerve supply to the foot. MATERIALS AND METHODS: Nineteen feet from 15 (8 males and 7 females) cadavers were dissected to identify the deep fibular nerves (DFNs) and superficial fibular nerves (SFNs). Sensation to the first dorsal web space was tested electrophysiologically in 101 participants (31 males and 70 females) with an age range of 18-47 years with stimulation over both DFNs and SFNs. RESULTS: Eleven of the 19 (58%) cadaver limbs had a communication between SFNs and DFNs in the dorsum of the foot. A reliable sensory response was recorded in the first dorsal web space in 88% of the limbs tested. Deep fibular stimulation alone produced a response in 34% of the limbs, while superficial fibular stimulation alone produced a response in 10% of the limbs. A separate response with stimulation of both the DFNs and SFNs was recorded in 44% of the limbs. CONCLUSIONS: A functional superficial to deep fibular sensory communication is present in a significant portion of the population. Those with the communication may not have the isolated sensory loss that would be expected in the first dorsal web space in conditions impacting the DFNs.


Asunto(s)
Variación Anatómica , Pie/inervación , Nervio Peroneo/anatomía & histología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Cadáver , Electromiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
12.
J Foot Ankle Surg ; 60(6): 1188-1192, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34130931

RESUMEN

Talus osteochondral lesions are a commonly underdiagnosed problem in young athletes. Talus osteochondral lesions surgical algorithm remains controversial. Current metrics suggest that conventional treatment of osteochondral lesions of the talus is promising; yet return to sport is poorly studied. Fifty-seven patients following talus osteochondral lesion surgical intervention were included in this study. About 63.1% were female with mean age 37.1 years, mean lesion size 10 × 12.5 mm, and mean follow-up 79.9 months postoperatively. Patients were divided into 4 groups by surgery performed: antegrade arthroscopic bone marrow stimulation, retrograde arthroscopic drilling, osteochondral autograft transfer, and allograft cartilage implantation. Outcome metrics include Visual Analog Scale for pain and function, Short Form-12, Foot and Ankle Disability Scale, Tegner, Marx activity scores, Naal Sports inventory, and patient satisfaction. Over 77% of patients were satisfied with surgical intervention. Each intervention significantly decreased pain and increased function, except retrograde drilling. All interventions trended toward decreased Tegner score; only antegrade drilling showed significant decrease. Based on Naal's sports inventory, 85.7% of surgically treated patients reported participating in sport activities, on average 3 times/week and 50.6 minutes/session. Traditionally, talus osteochondral lesions present a difficult problem that is marred by unsatisfactory nonoperative outcomes in typically active patients. As our surgical understanding has evolved, we've continued to improve on outcomes. Our patients demonstrated 77.2% overall satisfaction rate, a statistically significant improvement in pain and function, at an average follow-up of 79.9 months postoperatively, and a high rate of return to sport with little difference between surgical interventions.


Asunto(s)
Cartílago Articular , Astrágalo , Adulto , Articulación del Tobillo , Artroscopía , Femenino , Humanos , Volver al Deporte , Astrágalo/cirugía , Trasplante Autólogo , Resultado del Tratamiento
13.
Epilepsia ; 61(6): 1142-1155, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32452540

RESUMEN

OBJECTIVE: To define the phenotypic spectrum of phosphatidylinositol glycan class A protein (PIGA)-related congenital disorder of glycosylation (PIGA-CDG) and evaluate genotype-phenotype correlations. METHODS: Our cohort encompasses 40 affected males with a pathogenic PIGA variant. We performed a detailed phenotypic assessment, and in addition, we reviewed the available clinical data of 36 previously published cases and assessed the variant pathogenicity using bioinformatical approaches. RESULTS: Most individuals had hypotonia, moderate to profound global developmental delay, and intractable seizures. We found that PIGA-CDG spans from a pure neurological phenotype at the mild end to a Fryns syndrome-like phenotype. We found a high frequency of cardiac anomalies including structural anomalies and cardiomyopathy, and a high frequency of spontaneous death, especially in childhood. Comparative bioinformatical analysis of common variants, found in the healthy population, and pathogenic variants, identified in affected individuals, revealed a profound physiochemical dissimilarity of the substituted amino acids in variant constrained regions of the protein. SIGNIFICANCE: Our comprehensive analysis of the largest cohort of published and novel PIGA patients broadens the spectrum of PIGA-CDG. Our genotype-phenotype correlation facilitates the estimation on pathogenicity of variants with unknown clinical significance and prognosis for individuals with pathogenic variants in PIGA.


Asunto(s)
Variación Genética/genética , Hernia Diafragmática/diagnóstico por imagen , Hernia Diafragmática/genética , Deformidades Congénitas de las Extremidades/diagnóstico por imagen , Deformidades Congénitas de las Extremidades/genética , Proteínas de la Membrana/genética , Adulto , Secuencia de Aminoácidos , Niño , Estudios de Cohortes , Electroencefalografía/métodos , Facies , Hernia Diafragmática/fisiopatología , Humanos , Recién Nacido , Deformidades Congénitas de las Extremidades/fisiopatología , Imagen por Resonancia Magnética/métodos , Masculino
14.
Med Ref Serv Q ; 39(4): 323-333, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33085951

RESUMEN

The Research Data Management Librarian Academy (RDMLA) is a free, online global professional development program designed by librarians for librarians working in research-intensive environments. Developed through a unique partnership that includes a Library and Information Sciences academic program, research and health sciences libraries, and industry, the RDMLA's inception, development, and launch provide helpful insights into the creation of online professional development courses. The RDMLA team's experience building the course's curriculum with an instructional designer (ID) and evaluating the operation and usefulness of the course's content through usability testing provides valuable lessons learned for librarians constructing an online continuing education (CE) course.


Asunto(s)
Curriculum , Manejo de Datos/organización & administración , Educación a Distancia/organización & administración , Educación Profesional/organización & administración , Bibliotecólogos/educación , Bibliotecas Médicas/organización & administración , Investigadores/educación , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos
15.
Behav Brain Sci ; 43: e49, 2020 04 15.
Artículo en Inglés | MEDLINE | ID: mdl-32292155

RESUMEN

We present a theoretical and an empirical challenge to Cushman's claim that rationalization is adaptive because it allows humans to extract more accurate beliefs from our non-rational motivations for behavior. Rationalization sometimes generates more adaptive decisions by making our beliefs about the world less accurate. We suggest that the most important adaptive advantage of rationalization is instead that it increases our predictability (and therefore attractiveness) as potential partners in cooperative social interactions.


Asunto(s)
Toma de Decisiones , Racionalización , Humanos , Motivación
16.
Epilepsy Behav ; 79: 193-204, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29309953

RESUMEN

Studies of emotion processing are needed to better understand the pathophysiology of psychogenic nonepileptic seizures (PNES). We examined the differences in facial emotion processing between 12 patients with PNES, 12 patients with temporal lobe epilepsy (TLE), and 24 matched healthy controls (HCs) using fMRI with emotional faces task (EFT) (happy/sad/fearful/neutral) and resting state connectivity. Compared with TLE, patients with PNES exhibited increased fMRI response to happy, neutral, and fearful faces in visual, temporal, and/or parietal regions and decreased fMRI response to sad faces in the putamen bilaterally. Regions showing significant differences between PNES and TLE were used as functional seed regions of interest (ROIs), in addition to amygdala structural seed ROIs for resting state functional connectivity analyses. Whole brain analyses showed that compared with TLE and HCs, patients with PNES exhibited increased functional connectivity of the functional seed ROIs to several brain regions, particularly to cerebellar, visual, motor, and frontotemporal regions. Connectograms showed increased functional connections between left parahippocampal gyrus/uncus ROIs and right temporal ROIs in PNES compared with both the TLE and HC groups. Resting state functional connectivity of the left and right amygdala to various brain regions including emotion regulation and motor control circuits was increased in PNES when compared with those with TLE. This study provides preliminary evidence that patients with PNES exhibit altered facial emotion processing compared with patients with TLE and HCs and increased amygdala functional connectivity compared with TLE. These findings identify potential key differences in facial emotion processing reflective of neurophysiologic markers of neural circuitry alterations that can be used to generate further hypotheses for developing studies that examine the contributions of emotion processing to the development and maintenance of PNES.


Asunto(s)
Emociones/fisiología , Epilepsia del Lóbulo Temporal , Expresión Facial , Convulsiones/fisiopatología , Adulto , Amígdala del Cerebelo/fisiopatología , Encéfalo/fisiopatología , Cerebelo/fisiopatología , Epilepsia del Lóbulo Temporal/fisiopatología , Miedo , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Giro Parahipocampal/fisiopatología , Adulto Joven
17.
Epilepsy Behav ; 87: 131-136, 2018 10.
Artículo en Inglés | MEDLINE | ID: mdl-30100226

RESUMEN

The objective of this study was to characterize the changes in adverse events, seizure severity, and frequency in response to a pharmaceutical formulation of highly purified cannabidiol (CBD; Epidiolex®) in a large, prospective, single-center, open-label study. We initiated CBD in 72 children and 60 adults with treatment-resistant epilepsy (TRE) at 5 mg/kg/day and titrated it up to a maximum dosage of 50 mg/kg/day. At each visit, we monitored treatment adverse events with the adverse events profile (AEP), seizure severity using the Chalfont Seizure Severity Scale (CSSS), and seizure frequency (SF) using seizure calendars. We analyzed data for the enrollment and visits at 12, 24, and 48 weeks. We recorded AEP, CSSS, and SF at each follow-up visit for the weeks preceding the visit (seizures were averaged over 2-week periods). Of the 139 study participants in this ongoing study, at the time of analysis, 132 had 12-week, 88 had 24-week, and 61 had 48-week data. Study retention was 77% at one year. There were no significant differences between participants who contributed all 4 data points and those who contributed 2 or 3 data points in baseline demographic and AEP/SF/CSSS measures. For all participants, AEP decreased between CBD initiation and the 12-week visit (40.8 vs. 33.2; p < 0.0001) with stable AEP scores thereafter (all p ≥ 0.14). Chalfont Seizure Severity Scale scores were 80.7 at baseline, decreasing to 39.2 at 12 weeks (p < 0.0001) and stable CSSS thereafter (all p ≥ 0.19). Bi-weekly SF decreased from a mean of 144.4 at entry to 52.2 at 12 weeks (p = 0.01) and remained stable thereafter (all p ≥ 0.65). Analyses of the pediatric and adult subgroups revealed similar patterns. Most patients were treated with dosages of CBD between 20 and 30 mg/kg/day. For the first time, this prospective, open-label safety study of CBD in TRE provides evidence for significant improvements in AEP, CSSS, and SF at 12 weeks that are sustained over the 48-week duration of treatment.


Asunto(s)
Anticonvulsivantes/uso terapéutico , Cannabidiol/uso terapéutico , Convulsiones/diagnóstico , Convulsiones/tratamiento farmacológico , Índice de Severidad de la Enfermedad , Adolescente , Adulto , Niño , Femenino , Humanos , Masculino , Estudios Prospectivos , Adulto Joven
20.
Epilepsy Behav ; 52(Pt A): 143-8, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26414344

RESUMEN

The purposes of this study were to determine whether personalities of patients with nonepileptic psychogenic status (NEPS) are different from those of patients with typical intermittent psychogenic nonepileptic seizures (iPNES) using the Personality Assessment Inventory (PAI) and to compare their PAI profiles with the population norms. We hypothesized that patients with NEPS have more psychopathology compared with patients with iPNES and that, as a group, patients with PNES (iPNES+NEPS) would have more psychopathology compared with healthy individuals. We first compared the PAI profiles of patients with iPNES and NEPS and then the profiles of patients with NEPS, iPNES, and PNES with population norms in order to assess which PAI specific scales differed between groups in order to better characterize the psychopathology of PNES. All patients admitted for diagnostic evaluation to the epilepsy monitoring unit (EMU) were prospectively approached for participation. All patient/family interviews were conducted by an epileptologist, and the diagnosis of iPNES or NEPS was confirmed in all cases through video/EEG and/or family interview. The population norms for PAI were obtained from the manual. Of the 224 approached patients, 130 completed the PAI, and included 43 iPNES and 11 with NEPS. There were no significant differences between the two groups in regard to demographic or PAI profiles. Comparison with population norms revealed the presence of abnormal personality profiles on all scales in patients with iPNES, NEPS, or PNES. We conclude that while the occurrence of NEPS is relatively common in patients with PNES, the demographic characteristics and personality profiles of patients with NEPS are not different from those of patients with iPNES. We also confirmed the presence of significant psychopathology in the group with PNES when compared with population norms.


Asunto(s)
Personalidad , Convulsiones/psicología , Trastornos Somatomorfos/psicología , Adulto , Afecto , Anciano , Ansiedad/etiología , Ansiedad/psicología , Depresión/etiología , Depresión/psicología , Electroencefalografía , Femenino , Humanos , Masculino , Trastornos Mentales/epidemiología , Persona de Mediana Edad , Pruebas de Personalidad , Estudios Prospectivos , Convulsiones/diagnóstico , Convulsiones/epidemiología , Trastornos Somatomorfos/diagnóstico , Trastornos Somatomorfos/epidemiología , Adulto Joven
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