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1.
Int J Mol Sci ; 25(5)2024 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-38473703

RESUMEN

Multiple sclerosis (MS) is the most common autoimmune demyelinating disease of the central nervous system (CNS), consisting of heterogeneous clinical courses varying from relapsing-remitting MS (RRMS), in which disability is linked to bouts of inflammation, to progressive disease such as primary progressive MS (PPMS) and secondary progressive MS (SPMS), in which neurological disability is thought to be linked to neurodegeneration. As a result, successful therapeutics for progressive MS likely need to have both anti-inflammatory and direct neuroprotective properties. The modulation of sphingosine-1-phosphate (S1P) receptors has been implicated in neuroprotection in preclinical animal models. Siponimod/BAF312, the first oral treatment approved for SPMS, may have direct neuroprotective benefits mediated by its activity as a selective (S1P receptor 1) S1P1 and (S1P receptor 5) S1P5 modulator. We showed that S1P1 was mainly present in cortical neurons in lesioned areas of the MS brain. To gain a better understanding of the neuroprotective effects of siponimod in MS, we used both rat neurons and human-induced pluripotent stem cell (iPSC)-derived neurons treated with the neuroinflammatory cytokine tumor necrosis factor-alpha (TNF-α). Cell survival/apoptotic assays using flow cytometry and IncuCyte live cell analyses showed that siponimod decreased TNF-α induced neuronal cell apoptosis in both rat and human iPSCs. Importantly, a transcriptomic analysis revealed that mitochondrial oxidative phosphorylation, NFκB and cytokine signaling pathways contributed to siponimod's neuroprotective effects. Our data suggest that the neuroprotection of siponimod/BAF312 likely involves the relief of oxidative stress in neuronal cells. Further studies are needed to explore the molecular mechanisms of such interactions to determine the relationship between mitochondrial dysfunction and neuroinflammation/neurodegeneration.


Asunto(s)
Azetidinas , Compuestos de Bencilo , Esclerosis Múltiple Crónica Progresiva , Esclerosis Múltiple , Fármacos Neuroprotectores , Humanos , Animales , Ratas , Receptores de Esfingosina-1-Fosfato , Enfermedades Neuroinflamatorias , Fármacos Neuroprotectores/farmacología , Factor de Necrosis Tumoral alfa/uso terapéutico , Esclerosis Múltiple/tratamiento farmacológico , Esclerosis Múltiple Crónica Progresiva/tratamiento farmacológico , Muerte Celular
2.
Mult Scler Relat Disord ; 79: 105020, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37806231

RESUMEN

BACKGROUND: Though most patients with multiple sclerosis (MS) presented earlier on as a relapsing-remitting (RR) disease, disability progression eventually occurred. Uncovering the mechanisms underlying progression may facilitate the unmet need for developing therapies to prevent progression. Benign MS (BMS), a rare form of MS, is the opposite from secondary progressive MS (SPMS) in that it lacks disease progression defined as Expanded Disability Status Scale (EDSS) ≤3 after at least 15 years of disease onset. BMS is characterized by rare and mild relapses with complete remission of clinical symptoms (lower activity of the disease) and lack of progression. Our study aims to identify transcriptomic and immunological differences between BMS and SPMS to unravel the pathogenesis of disease progression. METHODS: We took multi-modal approaches with microarrays, flow cytometry, and lipidomics by three-way comparisons of patients with BMS vs. RRMS (low disease activity vs. moderate or severe activity), RRMS vs. SPMS (continued activity vs. complete transformation into progressive phase) as well as BMS vs. SPMS, matched for age and disease-duration (low disease activity and no progression vs. progression with or without activity). RESULTS: We found that patients with RRMS and SPMS have a significantly higher percentage of B cells than those with BMS. BMS shows a different transcriptomic profile than SPMS. Many of the differentially expressed genes (DEGs) are involved in B cell-mediated immune responses. Additionally, long-chain fatty acids (LCFA), which can act as inflammatory mediators, are also altered in SPMS. Overall, our data suggest a role for the dysregulation of B cell differentiation and function, humoral immunity, and iron and lipid homeostasis in the pathogenesis of MS disease progression. CONCLUSION: BMS has a unique transcriptomic and immunological profile compared to RRMS and SPMS. These differences will allow for personalized precision medicine and may ultimately lead to the discovery of new therapeutic targets for disease progression.


Asunto(s)
Esclerosis Múltiple Crónica Progresiva , Esclerosis Múltiple Recurrente-Remitente , Esclerosis Múltiple , Humanos , Esclerosis Múltiple/tratamiento farmacológico , Esclerosis Múltiple Recurrente-Remitente/tratamiento farmacológico , Inmunidad Humoral , Metabolismo de los Lípidos , Progresión de la Enfermedad , Esclerosis Múltiple Crónica Progresiva/tratamiento farmacológico , Homeostasis
3.
Front Aging ; 4: 1234572, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37900152

RESUMEN

Aging is associated with a progressive decline of innate and adaptive immune responses, called immunosenescence. This phenomenon links to different multiple sclerosis (MS) disease courses among different age groups. While clinical relapse and active demyelination are mainly related to the altered adaptive immunity, including invasion of T- and B-lymphocytes, impairment of innate immune cell (e.g., microglia, astrocyte) function is the main contributor to disability progression and neurodegeneration. Most patients with MS manifest the relapsing-remitting phenotype at a younger age, while progressive phenotypes are mainly seen in older patients. Current disease-modifying therapies (DMTs) primarily targeting adaptive immunity are less efficacious in older patients, suggesting that immunosenescence plays a role in treatment response. This review summarizes the recent immune mechanistic studies regarding immunosenescence in patients with MS and discusses the clinical implications of these findings.

4.
BMJ Open ; 13(9): e074023, 2023 09 21.
Artículo en Inglés | MEDLINE | ID: mdl-37734889

RESUMEN

OBJECTIVES: To develop consensus on the principles and key actions for collaborative working in practice between general practice, community pharmacy and patients and their carers. DESIGN: Three-round modified eDelphi study, starting from an established conceptual model of collaboration between general practitioners (GPs) and community pharmacists. SETTING: Community pharmacies and general practices in England, UK. PARTICIPANTS: A panel of 123 experts: 43% from a community pharmacy background; 36% from a GP background; 13% patients, carers or patient representatives and 8% from academic or commissioner backgrounds. Panellist numbers reduced by approximately 30% in rounds 2 and 3. PRIMARY AND SECONDARY OUTCOME MEASURES: Consensus between expert panellists, defined as at least 75% agreement. RESULTS: A high level of consensus (>80%) was achieved on all components of a model of collaboration composed of Fundamental Principles of Collaboration and Key Activities for Action, supported by a series of aspirational statements and suggested practical actions. The fundamental principles and key activities are appended by contextual points. The findings indicate that collaboration in practice involves team members other than just GPs and community pharmacists and recognises that patients often want to know how each professional team is involved in their care. This study also provides insights into how collaboration between general practice and community pharmacy settings appears to have shifted during the COVID-19 pandemic, especially through opportunities for virtual collaboration and communication that can transcend the need for close geographical proximity. CONCLUSION: A consensus-based model of collaboration between general practice teams, community pharmacy teams, and patients and their carers has been developed. It is practically focused, values the patient voice and incorporates general practice and community pharmacy team members. While developed in England, the model is likely to also have applicability to other countries with similar health systems that include general practices and community pharmacies.


Asunto(s)
COVID-19 , Medicina General , Farmacias , Humanos , Consenso , Pandemias
5.
Nat Commun ; 14(1): 4119, 2023 07 11.
Artículo en Inglés | MEDLINE | ID: mdl-37433773

RESUMEN

The accumulation of atypical, cytotoxic 1-deoxysphingolipids (1-dSLs) has been linked to retinal diseases such as diabetic retinopathy and Macular Telangiectasia Type 2. However, the molecular mechanisms by which 1-dSLs induce toxicity in retinal cells remain poorly understood. Here, we integrate bulk and single-nucleus RNA-sequencing to define biological pathways that modulate 1-dSL toxicity in human retinal organoids. Our results demonstrate that 1-dSLs differentially activate signaling arms of the unfolded protein response (UPR) in photoreceptor cells and Müller glia. Using a combination of pharmacologic activators and inhibitors, we show that sustained PERK signaling through the integrated stress response (ISR) and deficiencies in signaling through the protective ATF6 arm of the UPR are implicated in 1-dSL-induced photoreceptor toxicity. Further, we demonstrate that pharmacologic activation of ATF6 mitigates 1-dSL toxicity without impacting PERK/ISR signaling. Collectively, our results identify new opportunities to intervene in 1-dSL linked diseases through targeting different arms of the UPR.


Asunto(s)
Retinopatía Diabética , Telangiectasia Retiniana , Humanos , Esfingolípidos , Respuesta de Proteína Desplegada
6.
Glia ; 71(10): 2372-2382, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37335016

RESUMEN

In the retina, microglia are resident immune cells that are essential for development and function. Retinal microglia play a central role in mediating pathological degeneration in diseases such as glaucoma, retinitis pigmentosa, age-related neurodegeneration, ischemic retinopathy, and diabetic retinopathy. Current models of mature human retinal organoids (ROs) derived from iPS cell (hiPSC) do not contain resident microglia integrated into retinal layers. Increasing cellular diversity in ROs by including resident microglia would more accurately represent the native retina and better model diseases in which microglia play a key role. In this study, we develop a new 3D in vitro tissue model of microglia-containing retinal organoids by co-culturing ROs and hiPSC-derived macrophage precursor cells (MPCs). We optimized the parameters for successful integration of MPCs into retinal organoids. We show that while in the ROs, MPCs migrate to the equivalent of the outer plexiform layer where retinal microglia cells reside in healthy retinal tissue. While there, they develop a mature morphology characterized by small cell bodies and long branching processes which is only observed in vivo. During this maturation process these MPCs cycle through an activated phase followed by a stable mature microglial phase as seen by the down regulation of pro-inflammatory cytokines and upregulation of anti-inflammatory cytokines. Finally, we characterized mature ROs with integrated MPCs using RNAseq showing an enrichment of cell-type specific microglia markers. We propose that this co-culture system may be useful for understanding the pathogenesis of retinal diseases involving retinal microglia and for drug discovery directly in human tissue.


Asunto(s)
Células Madre Pluripotentes Inducidas , Enfermedades de la Retina , Humanos , Células Madre Pluripotentes Inducidas/patología , Microglía/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Retina , Enfermedades de la Retina/patología , Organoides/patología , Macrófagos/patología , Citocinas/metabolismo
7.
J Child Health Care ; : 13674935231184919, 2023 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-37387448

RESUMEN

Type 1 diabetes mellitus (T1DM) is the second most common chronic or long-term condition (LTC) affecting young people (YP); when transitioning from paediatric to adult healthcare, young people with LTCs such as T1DM are expected to self-manage medication, diet and clinical appointments. This scoping review aimed to analyse research examining ways digital health technologies were used to support YP with LTCs during transition from paediatric to adult healthcare and to establish YP's needs, experiences and challenges when transitioning. We aimed to identify knowledge gaps and inform development of a novel chatbot with components such as avatars and linked videos to help YP with T1DM gain self-management confidence and competence during transition. Nineteen studies identified through searching five electronic databases were included in this review. A combination of digital health technologies was used to support transition of YP with LTCs to adult healthcare. Barriers to successful transition were reported and YP described the importance of social relationships and transition readiness and expressed the need for individualised interventions that acknowledge social factors such as work and college. No supportive chatbots with components to help YP with T1DM were identified. This contribution will inform future development and evaluation of such a chatbot.

8.
Mult Scler Relat Disord ; 75: 104719, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37172367

RESUMEN

BACKGROUND: Teriflunomide (TER) (Aubagio™) is an FDA-approved disease-modifying therapy (DMT) for relapsing-remitting multiple sclerosis (RRMS). The mechanism of action of TER is thought to be related to the inhibition of dihydroorotate dehydrogenase (DHODH), a key mitochondrial enzyme in the de novo pyrimidine synthesis pathway required by rapidly dividing lymphocytes. Several large pivotal studies have established the efficacy and safety of TER in patients with RRMS. Despite this, little is known about how the adaptive and innate immune cell subsets are affected by the treatment in patients with MS. METHODS: We recruited 20 patients with RRMS who were newly started on TER and performed multicolor flow cytometry and functional assays on peripheral blood samples. A paired t-test was used for the statistical analysis and comparison. RESULTS: Our data showed that TER promoted a tolerogenic environment by shifting the balance between activated pathogenic and naïve or immunosuppressive immune cell subsets. In our cohort, TER increased the expression of the immunosuppressive marker CD39 on regulatory T cells (Tregs) while it decreased the expression of the activation marker CXCR3 on CD4+ T helper cells. TER treatment also reduced switched memory (sm) B cells while it increased naïve B cells and downregulated the expression of co-stimulatory molecules CD80 and CD86. Additionally, TER reduced the percentage and absolute numbers of natural killer T (NKT) cells, as well as the percentage of natural killer (NK) cells and showed a trend toward reducing the CD56dim NK pathogenic subset. CONCLUSION: TER promotes the tolerogenic immune response and suppresses the pathogenic immune response in patients with RRMS.


Asunto(s)
Esclerosis Múltiple Recurrente-Remitente , Esclerosis Múltiple , Humanos , Inmunosupresores/efectos adversos , Nitrilos
9.
J Clin Invest ; 133(9)2023 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-37115691

RESUMEN

Patient-derived induced pluripotent stem cells (iPSCs) provide a powerful tool for identifying cellular and molecular mechanisms of disease. Macular telangiectasia type 2 (MacTel) is a rare, late-onset degenerative retinal disease with an extremely heterogeneous genetic architecture, lending itself to the use of iPSCs. Whole-exome sequencing screens and pedigree analyses have identified rare causative mutations that account for less than 5% of cases. Metabolomic surveys of patient populations and GWAS have linked MacTel to decreased circulating levels of serine and elevated levels of neurotoxic 1-deoxysphingolipids (1-dSLs). However, retina-specific, disease-contributing factors have yet to be identified. Here, we used iPSC-differentiated retinal pigmented epithelial (iRPE) cells derived from donors with or without MacTel to screen for novel cell-intrinsic pathological mechanisms. We show that MacTel iRPE cells mimicked the low serine levels observed in serum from patients with MacTel. Through RNA-Seq and gene set enrichment pathway analysis, we determined that MacTel iRPE cells are enriched in cellular stress pathways and dysregulation of central carbon metabolism. Using respirometry and mitochondrial stress testing, we functionally validated that MacTel iRPE cells had a reduction in mitochondrial function that was independent of defects in serine biosynthesis and 1-dSL accumulation. Thus, we identified phenotypes that may constitute alternative disease mechanisms beyond the known serine/sphingolipid pathway.


Asunto(s)
Retinopatía Diabética , Células Madre Pluripotentes Inducidas , Telangiectasia Retiniana , Humanos , Células Madre Pluripotentes Inducidas/metabolismo , Telangiectasia Retiniana/metabolismo , Telangiectasia Retiniana/patología , Retinopatía Diabética/metabolismo , Mitocondrias/metabolismo , Células Epiteliales/metabolismo , Serina/metabolismo
10.
Traffic Inj Prev ; 23(5): 244-249, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35333678

RESUMEN

OBJECTIVE: It is often assumed that a child restraint with a five or six-point internal harness provides greater protection for children in frontal crashes than a booster seat with a lap-sash seat belt. However, most research comparing these restraint types has focused on protection for children aged up to approximately 3-4 years of age. Recently, harnessed child restraints for older children up to approximately 8 years of age have become available, but there is little data on their performance compared to booster seats for children over 4 years of age. This study aimed to compare frontal crash performance of a series of harnessed child restraints for children aged 4-8 years to booster seats. METHODS: Four large harnessed child restraints (Type G in the Australian Standard, AS/NZS 1754:2013) and six high back booster seats (Type E in AS/NZS 1754:2013) were tested in frontal impact on a deceleration sled. Head and pelvis accelerations were recorded and head excursions were measured from high speed video. RESULTS: Head excursion was an average of 92 mm greater in the large harnessed child restraints than the high back booster seats. The initial position of the head in Type G restraints, an average of 58 mm further forward compared to Type E boosters, was the main contributor to the larger head excursion during impact. Conversely, peak head accelerations in the impact phase were, on average, 37.2 g lower in the large harnessed child restraints than the high back booster seats. CONCLUSIONS: These data suggest that recommendations for harnessed restraints and booster seats for children aged 4-8 years is not as obvious as is sometimes assumed. Harnessed restraints allow greater head excursion in frontal impacts, potentially increasing the chances of head impacts, especially in vehicles with limited clearance between the restraint and the seat in front. The likelihood, and types of, incorrect use that occur in each restraint type, the vehicle occupant space, and the restraint's crash performance under ideal conditions should be considered in recommending restraints for these older children.


Asunto(s)
Sistemas de Retención Infantil , Aceleración , Accidentes de Tránsito/prevención & control , Adolescente , Australia , Niño , Preescolar , Humanos , Cinturones de Seguridad
11.
Allergy ; 77(5): 1545-1558, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34716996

RESUMEN

BACKGROUND: The heterogeneity and lack of validation of existing severity scores for food allergic reactions limit standardization of case management and research advances. We aimed to develop and validate a severity score for food allergic reactions. METHODS: Following a multidisciplinary experts consensus, it was decided to develop a food allergy severity score (FASS) with ordinal (oFASS) and numerical (nFASS) formats. oFASS with 3 and 5 grades were generated through expert consensus, and nFASS by mathematical modeling. Evaluation was performed in the EuroPrevall outpatient clinic cohort (8232 food reactions) by logistic regression with request of emergency care and medications used as outcomes. Discrimination, classification, and calibration were calculated. Bootstrapping internal validation was followed by external validation (logistic regression) in 5 cohorts (3622 food reactions). Correlation of nFASS with the severity classification done by expert allergy clinicians by Best-Worst Scaling of 32 food reactions was calculated. RESULTS: oFASS and nFASS map consistently, with nFASS having greater granularity. With the outcomes emergency care, adrenaline and critical medical treatment, oFASS and nFASS had a good discrimination (receiver operating characteristic area under the curve [ROC-AUC]>0.80), classification (sensitivity 0.87-0.92, specificity 0.73-0.78), and calibration. Bootstrapping over ROC-AUC showed negligible biases (1.0 × 10-6 -1.23 × 10-3 ). In external validation, nFASS performed best with higher ROC-AUC. nFASS was strongly correlated (R 0.89) to best-worst scoring of 334 expert clinicians. CONCLUSION: FASS is a validated and reliable method to measure severity of food allergic reactions. The ordinal and numerical versions that map onto each other are suitable for use by different stakeholders in different settings.


Asunto(s)
Hipersensibilidad a los Alimentos , Alérgenos , Área Bajo la Curva , Alimentos , Hipersensibilidad a los Alimentos/diagnóstico , Humanos , Curva ROC
12.
Stud Health Technol Inform ; 284: 191-193, 2021 Dec 15.
Artículo en Inglés | MEDLINE | ID: mdl-34920507

RESUMEN

The poster will report upon a longitudinal study exploring the attitudes towards the implementation of health technology into clinical and community nursing practice from the perspective of third year undergraduate students studying adult, child, mental health and learning disability nursing.


Asunto(s)
Actitud , Tecnología Biomédica , Estudiantes de Enfermería , Humanos , Estudios Longitudinales
13.
J Cent Nerv Syst Dis ; 13: 11795735211050712, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34720605

RESUMEN

BACKGROUND: The long-term prognosis of relapsing-remitting multiple sclerosis (RRMS) is usually unfavorable as most patients transition to secondary progressive multiple sclerosis (SPMS) with accumulative disability. A rare form of non-progressive multiple sclerosis (MS) also exists, known as benign MS (BMS or NPMS), which lacks disease progression defined as Expanded Disability Status Scale (EDSS) ≤3 after 15 years of disease onset without treatment. PURPOSE: Our study aims to identify soluble plasma factors predicting disease progression in multiple sclerosis (MS). RESEARCH DESIGN AND STUDY SAMPLE: We utilized Luminex multiplex to analyze plasma levels of 33 soluble factors, comparing 32 SPMS patients to age-, sex-, and disease duration-matched non-progressive BMS patients, as well as to RRMS patients and healthy controls. RESULTS: Plasma levels of EGF, sCD40L, MCP1/CCL2, fractalkine/CX3CL1, IL-13, Eotaxin, TNFß/LTα, and IL-12p40 were significantly different between the various types of MS. Plasma sCD40L was significantly elevated in SPMS compared to BMS and RRMS. The combination of MCP1/CCL2 and sCD40L discriminated between RRMS and SPMS. MCP1/CCL2 was found to be the most effective classifier between BMS and RRMS, while BMS was most effectively distinguished from SPMS by the combination of sCD40L and IFNγ levels. CONCLUSIONS: These differences may facilitate personalized precision medicine and aid in the discovery of new therapeutic targets for disease progression through the improvement of patient stratification.

14.
Int J Clin Pract ; 75(5): e13932, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33305382

RESUMEN

BACKGROUND: The benefits of clinical pharmacy services are established within hospital practice but staff numbers required for service delivery are not well described and staffing levels vary. The need for a consistent, objective method of determining staffing levels was recognised at a UK University Hospital and a Clinical Pharmacy Workforce Calculator (CPWC) was developed. OBJECTIVE: To develop the Activity Standard (AS) for pharmaceutical care and establish the reliability of the CPWC across acute hospital settings in UK. SETTING: Acute hospital in-patient clinical pharmacy services on medical and surgical wards. METHOD: Using the World Health Organisation's Workload Indicators of Staffing Need (WISN) methodology, a two-round Delphi study was undertaken. This developed the Activity Standard for pharmaceutical care and identified the staff-time unavailable for clinical work. Consenting panel members then tested the CPWC, calculating the staff required for three scenarios to determine whether it could be reliably used by different operators. RESULTS: Thirty-six participants consented to participate. Data were returned from 22 (61%) of whom 20 (56%) supplied analysable data. Consensus was achieved on the tasks required for pharmaceutical care delivery, the mean time each takes, how frequently they should be completed and the time unavailable for clinical work for each grade of staff. The CPWC calculates staffing requirements using these data. Eleven participants (55%) tested the CPWC and analysis of responses demonstrated that 30 of 33 (91%) calculations were accurately completed. DISCUSSION: This study defined the WISN Activity Standard for UK pharmaceutical care delivery to hospital inpatients and showed content validity for the CPWC in acute medical and surgical hospital settings. Different operators used the CPWC reliably and applied it to local sites. CONCLUSION: The CPWC offers hospital pharmacy managers a useful tool to negotiate adequate staffing to deliver pharmaceutical care. Its development methodology could be applied widely in pharmacy practice.


Asunto(s)
Servicio de Farmacia en Hospital , Farmacia , Hospitales , Humanos , Admisión y Programación de Personal , Reproducibilidad de los Resultados , Recursos Humanos
15.
Clin Exp Allergy ; 50(9): 1093-1102, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32648641

RESUMEN

BACKGROUND: Bioaccessibility of food allergens may be a key determinant of allergic reactions. OBJECTIVE: To develop a protocol allowing the detection of the major peanut allergen, Ara h 6, in the bloodstream following ingestion of low amounts of peanut and to compare Ara h 6 bioaccessibility by food matrix. We further assessed for differences in absorption in healthy versus peanut-allergic volunteers. METHODS: A blood pretreatment combining acidic shock and thermal treatment was developed. This protocol was then applied to blood samples collected from human volunteers (n = 6, healthy controls; n = 14, peanut-allergic patients) at various time-points following ingestion of increasing levels of peanut incurred in different food matrices (cookies, peanut butter and chocolate dessert). Immunodetection was performed using an in-house immunoassay. RESULTS: An original pretreatment protocol was optimized, resulting in irreversible dissociation of human antibodies-Ara h 6 immune complex, thus rendering Ara h 6 accessible for its immunodetection. Ara h 6 was detected in samples from all volunteers following ingestion of 300-1000 mg peanut protein, although variations in the kinetics of passage were observed between individuals and matrices. Interestingly, in peanut-allergic subjects, Ara h 6 could be detected following ingestion of lower doses and at higher concentrations than in non-allergic volunteers. CONCLUSIONS AND CLINICAL RELEVANCE: The kinetics and intensity of Ara h 6 passage in bloodstream depend on both individual and food matrix. Peanut-allergic patients appear to demonstrate higher absorption rate, the clinical significance of which warrants further evaluation.


Asunto(s)
Albuminas 2S de Plantas/sangre , Antígenos de Plantas/sangre , Arachis/efectos adversos , Absorción Gastrointestinal , Inmunoensayo , Hipersensibilidad al Cacahuete/inmunología , Albuminas 2S de Plantas/farmacocinética , Adolescente , Adulto , Arachis/inmunología , Biomarcadores/sangre , Estudios Cruzados , Método Doble Ciego , Femenino , Humanos , Masculino , Hipersensibilidad al Cacahuete/sangre , Hipersensibilidad al Cacahuete/diagnóstico , Valor Predictivo de las Pruebas , Distribución Aleatoria , Adulto Joven
16.
Nat Rev Neurol ; 16(3): 154-170, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32080393

RESUMEN

Neuromyelitis optica spectrum disorders (NMOSD) are a type of neurological autoimmune disease characterized by attacks of CNS inflammation that are often severe and predominantly affect the spinal cord and optic nerve. The majority of individuals with NMOSD are women, many of whom are of childbearing age. Although NMOSD are rare, several small retrospective studies and case reports have indicated that pregnancy can worsen disease activity and might contribute to disease onset. NMOSD disease activity seems to negatively affect pregnancy outcomes. Moreover, some of the current NMOSD treatments are known to pose risks to the developing fetus and only limited safety data are available for others. Here, we review published studies regarding the relationship between pregnancy outcomes and NMOSD disease activity. We also assess the risks associated with using disease-modifying therapies for NMOSD during the course of pregnancy and breastfeeding. On the basis of the available evidence, we offer recommendations regarding the use of these therapies in the course of pregnancy planning in individuals with NMOSD.


Asunto(s)
Anomalías Inducidas por Medicamentos , Aborto Espontáneo/inducido químicamente , Factores Inmunológicos/efectos adversos , Neuromielitis Óptica/tratamiento farmacológico , Neuromielitis Óptica/inmunología , Complicaciones del Trabajo de Parto/inducido químicamente , Preeclampsia/inducido químicamente , Adulto , Femenino , Humanos , Embarazo
17.
JCI Insight ; 5(3)2020 02 13.
Artículo en Inglés | MEDLINE | ID: mdl-31935197

RESUMEN

BACKGROUNDSiponimod (BAF312) is a selective sphingosine-1-phosphate receptor 1 and 5 (S1PR1, S1PR5) modulator recently approved for active secondary progressive multiple sclerosis (SPMS). The immunomodulatory effects of siponimod in SPMS have not been previously described.METHODSWe conducted a multicentered, randomized, double-blind, placebo-controlled AMS04 mechanistic study with 36 SPMS participants enrolled in the EXPAND trial. Gene expression profiles were analyzed using RNA derived from whole blood with Affymetrix Human Gene ST 2.1 microarray technology. We performed flow cytometry-based assays to analyze the immune cell composition and microarray gene expression analysis on peripheral blood from siponimod-treated participants with SPMS relative to baseline and placebo during the first-year randomization phase.RESULTSMicroarray analysis showed that immune-associated genes involved in T and B cell activation and receptor signaling were largely decreased by siponimod, which is consistent with the reduction in CD4+ T cells, CD8+ T cells, and B cells. Flow cytometric analysis showed that within the remaining lymphocyte subsets there was a reduction in the frequencies of CD4+ and CD8+ naive T cells and central memory cells, while T effector memory cells, antiinflammatory Th2, and T regulatory cells (Tregs) were enriched. Transitional regulatory B cells (CD24hiCD38hi) and B1 cell subsets (CD43+CD27+) were enriched, shifting the balance in favor of regulatory B cells over memory B cells. The proregulatory shift driven by siponimod treatment included a higher proliferative potential of Tregs compared with non-Tregs, and upregulated expression of PD-1 on Tregs. Additionally, a positive correlation was found between Tregs and regulatory B cells in siponimod-treated participants.CONCLUSIONThe shift toward an antiinflammatory and suppressive homeostatic immune system may contribute to the clinical efficacy of siponimod in SPMS.TRIAL REGISTRATIONNCT02330965.


Asunto(s)
Azetidinas/farmacología , Linfocitos B/efectos de los fármacos , Compuestos de Bencilo/farmacología , Esclerosis Múltiple Crónica Progresiva/inmunología , Receptores de Lisoesfingolípidos/efectos de los fármacos , Linfocitos T/efectos de los fármacos , Adolescente , Adulto , Linfocitos B/inmunología , Método Doble Ciego , Femenino , Perfilación de la Expresión Génica , Humanos , Masculino , Esclerosis Múltiple Crónica Progresiva/genética , Placebos , Linfocitos T/inmunología , Adulto Joven
19.
BMJ Open ; 9(9): e031707, 2019 09 20.
Artículo en Inglés | MEDLINE | ID: mdl-31542765

RESUMEN

OBJECTIVES: To survey current prescribing practices of psychotropic drugs by child and adolescent eating disorder (CAED) psychiatrists in the treatment of anorexia nervosa (AN). DESIGN: Cross-sectional self-administered survey. SETTING: All children and young people eating disorder services (CYP EDS) in England during a national training programme. PARTICIPANTS: 44 CAED psychiatrists practising in CYP EDS in England. PRIMARY AND SECONDARY OUTCOME MEASURES: CAED psychiatrists completed a questionnaire regarding the pattern of psychopharmacological care in AN that they provide and the medication treatment pattern at their CYP EDS. Secondary outcome measures included the process of continuing pharmacotherapy from secondary care to primary care. RESULTS: Of the 77 CYP EDS representing every team in England, 44 teams represented by a CAED psychiatrist responded, despite 13 having no psychiatrists in post at the time of the study (response rate 69%). Most (40%) respondents estimated that <10% of patients with AN were prescribed psychotropic medications. Olanzapine was reported as the most commonly prescribed medication for AN by 38% of the respondents, followed by fluoxetine (29%) and sertraline (10%). The most common minimum olanzapine initiation dose in this study was at 2.5 mg/day for a duration of 2-4 weeks, reaching a maximum dose of 5 mg/day. Most (68%) reviewed medications every week (30%) or every 2 weeks (38%). Over 50% of the respondents reported continuation of olanzapine prescribing within the CYP EDS teams. CONCLUSIONS: This nationally representative survey showed that despite a lack of evidence, psychotropic medications are commonly prescribed to a minority of patients, most frequently, olanzapine. Further evidence is needed on which patients may potentially benefit from pharmacotherapy as an adjunct to psychological interventions.


Asunto(s)
Anorexia Nerviosa/tratamiento farmacológico , Prescripciones de Medicamentos/estadística & datos numéricos , Pautas de la Práctica en Medicina , Psiquiatría , Psicotrópicos/uso terapéutico , Estudios Transversales , Humanos , Autoinforme
20.
Am J Obstet Gynecol ; 221(4): 349.e1-349.e9, 2019 10.
Artículo en Inglés | MEDLINE | ID: mdl-31238038

RESUMEN

BACKGROUND: Enhanced recovery after surgery pathways provide a multidisciplinary, evidence-based approach to the care of surgical patients. They have been shown to decrease postoperative length of stay and cost in several surgical subspecialties, including gynecology, but have not been well-studied in obstetric patients who undergo cesarean delivery. OBJECTIVE: We sought to determine whether the implementation of an enhanced recovery after surgery pathway for cesarean delivery would decrease postoperative length of stay and postoperative direct cost compared with historic controls. STUDY DESIGN: We conducted a retrospective cohort study that compared postoperative length of stay and postoperative direct cost among women on the enhanced recovery after surgery cesarean delivery pathway in the first year of implementation (April 1, 2017, to March 31, 2018; n=531) compared with historic controls (March 1, 2016, to February 28, 2017; n=661). Literature review informed the development of a prototype enhanced recovery after surgery pathway for cesarean delivery based on best practices from previous enhanced recovery after surgery experience in obstetrics (if available) or from other surgical disciplines if there were no available data for obstetrics. When there was not relevant published evidence from obstetrics, the taskforce used clinical experience and expert opinion to develop the pathway. The enhanced recovery after surgery cesarean delivery pathway included preadmission patient education and preoperative, intrapartum, and postoperative elements. Some components reflected standard obstetric care, and others were specific to the enhanced recovery after surgery pathway. Women with pregestational diabetes mellitus who were receiving insulin therapy before pregnancy, women with preeclampsia with severe features, women with complex pain needs, and women with surgical complications were excluded from baseline and implementation groups. Enhanced recovery after surgery cesarean delivery pathway participation was determined by order set usage. Analysis was stratified for women who underwent planned (no labor; n=530) and unplanned (labor; n=662) cesarean delivery. Demographic and clinical characteristics, postoperative length of stay, postoperative direct cost, and readmission rates for the baseline and implementation groups were compared with the use of chi-square and t-tests. RESULTS: During the first year of implementation, 531 of 640 eligible women (83%) were included in the enhanced recovery after surgery cesarean delivery pathway. Body mass index was marginally higher in the baseline group for unplanned cesarean delivery (32.5±7.1 vs 31.4±6.7 kg/m2; P=.04). Otherwise there were no significant differences in demographic or maternal clinical characteristics between baseline or implementation groups overall or for planned or unplanned cesarean delivery. Compared with baseline, implementation of the enhanced recovery after surgery cesarean delivery pathway resulted in a significant decrease in postoperative length of stay by 7.8% or 4.86 hours overall (P<.001) and for both planned (P=.001) and unplanned (P=.002) cesarean delivery. Total postoperative direct costs decreased by 8.4% or $642.85 per patient overall (P<.001) and for both planned (P<.001) and unplanned (P<.001) cesarean delivery. There were no significant differences in readmission rates. CONCLUSION: Implementation of an enhanced recovery after surgery pathway for women who had planned or unplanned cesarean delivery was associated with significantly decreased postoperative length of stay and significant direct cost-savings per patient, without an increase in hospital readmissions. Given that cesarean delivery is 1 of the most common surgical procedures performed in the United States, positively impacting postoperative length of stay and direct cost for women who undergo cesarean delivery could have significant healthcare cost-savings.


Asunto(s)
Cesárea/métodos , Recuperación Mejorada Después de la Cirugía , Costos de la Atención en Salud/estadística & datos numéricos , Tiempo de Internación/estadística & datos numéricos , Adulto , Antiinflamatorios no Esteroideos/uso terapéutico , Cesárea/economía , Ambulación Precoz , Nutrición Enteral , Ayuno , Femenino , Fluidoterapia/métodos , Humanos , Ketorolaco/uso terapéutico , Dolor Postoperatorio/tratamiento farmacológico , Educación del Paciente como Asunto , Atención Perioperativa , Fenilefrina/uso terapéutico , Embarazo , Desarrollo de Programa , Evaluación de Programas y Proyectos de Salud , Estudios Retrospectivos , Vasoconstrictores/uso terapéutico
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