Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 1.210
Filtrar
1.
J Clin Invest ; 134(7)2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38557491

RESUMEN

Mutations in genes encoding chromatin modifiers are enriched among mutations causing intellectual disability. The continuing development of the brain postnatally, coupled with the inherent reversibility of chromatin modifications, may afford an opportunity for therapeutic intervention following a genetic diagnosis. Development of treatments requires an understanding of protein function and models of the disease. Here, we provide a mouse model of Say-Barber-Biesecker-Young-Simpson syndrome (SBBYSS) (OMIM 603736) and demonstrate proof-of-principle efficacy of postnatal treatment. SBBYSS results from heterozygous mutations in the KAT6B (MYST4/MORF/QFK) gene and is characterized by intellectual disability and autism-like behaviors. Using human cells carrying SBBYSS-specific KAT6B mutations and Kat6b heterozygous mice (Kat6b+/-), we showed that KAT6B deficiency caused a reduction in histone H3 lysine 9 acetylation. Kat6b+/- mice displayed learning, memory, and social deficits, mirroring SBBYSS individuals. Treatment with a histone deacetylase inhibitor, valproic acid, or an acetyl donor, acetyl-carnitine (ALCAR), elevated histone acetylation levels in the human cells with SBBYSS mutations and in brain and blood cells of Kat6b+/- mice and partially reversed gene expression changes in Kat6b+/- cortical neurons. Both compounds improved sociability in Kat6b+/- mice, and ALCAR treatment restored learning and memory. These data suggest that a subset of SBBYSS individuals may benefit from postnatal therapeutic interventions.


Asunto(s)
Anomalías Múltiples , Acetilcarnitina , Hipotiroidismo Congénito , Anomalías Craneofaciales , Histona Acetiltransferasas , Discapacidad Intelectual , Inestabilidad de la Articulación , Animales , Humanos , Ratones , Anomalías Múltiples/tratamiento farmacológico , Anomalías Múltiples/genética , Acetilación , Acetilcarnitina/farmacología , Acetilcarnitina/uso terapéutico , Blefarofimosis , Cromatina , Anomalías Craneofaciales/tratamiento farmacológico , Anomalías Craneofaciales/genética , Exones , Facies , Cardiopatías Congénitas , Histona Acetiltransferasas/antagonistas & inhibidores , Histona Acetiltransferasas/genética , Histona Acetiltransferasas/metabolismo , Histonas/genética , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/genética
2.
Obes Res Clin Pract ; 18(2): 159-162, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38582735

RESUMEN

We present for the first-time efficacy and tolerability of GLP-1-RA (Semaglutide) in Smith-Kingsmore syndrome (SKS). SKS is a rare genetic disorder characterized by intellectual disability, macrocephaly, seizures and distinctive facial features due to MTOR gene mutation. We present a 22-year-old woman with mosaic SKS and severe obesity (Body Mass Index ≥40 kg/m²), treated with semaglutide. She achieved a 9 kg (7.44%) weight loss over 12 months without adverse effects.This case highlights semaglutide's potential in managing obesity in SKS patients, emphasizing the need for further research in this rare genetic disorder.


Asunto(s)
Péptidos Similares al Glucagón , Humanos , Femenino , Péptidos Similares al Glucagón/uso terapéutico , Adulto Joven , Mutación , Pérdida de Peso/efectos de los fármacos , Serina-Treonina Quinasas TOR , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/genética , Obesidad/tratamiento farmacológico , Obesidad/complicaciones , Resultado del Tratamiento , Índice de Masa Corporal , Obesidad Mórbida
3.
Tijdschr Psychiatr ; 66(1): 30-35, 2024.
Artículo en Holandés | MEDLINE | ID: mdl-38380485

RESUMEN

BACKGROUND: Sexual behavior disorders in intellectual disability form several challenges, despite evolutions in treatment options and risk assessment. The use of antilibidinal pharmacotherapy in this population is controversial and research is inconclusive about the most appropriate treatment strategy. AIM: To highlight pharmacotherapeutic management of sexual behavior disorders in intellectual disability, its medical and ethical considerations. METHOD: A literature review to provide an overview of the available literature, which was elaborated based on clinical experience. RESULTS: We found a lack of scientific evidence on the efficacy of pharmacotherapy specifically for sexual behavior disorders in people with intellectual disabilities. The routine use of antilibidinal medication is contraindicated. Medical and ethical guidelines have been published as well as contraindications for initiating androgen deprivation therapy in the general population. The necessity of pharmacotherapy should be closely monitored and supplemented with psychotherapeutic care to cultivate the patient’s sexual skills, attitudes and knowledge. A distinction should be made between sexual behavior disorders of the ‘paraphilic type’ and of the ‘sexually maladjusted or naive type’. CONCLUSION: Multidisciplinary evaluation, risk assessment and an individualized approach are the cornerstones of high-quality treatment of sexual behavior disorders in persons with intellectual disability.


Asunto(s)
Discapacidad Intelectual , Neoplasias de la Próstata , Masculino , Humanos , Discapacidad Intelectual/tratamiento farmacológico , Antagonistas de Andrógenos/uso terapéutico , Neoplasias de la Próstata/tratamiento farmacológico , Conducta Sexual , Psicotrópicos/uso terapéutico
4.
Enferm. glob ; 23(73): 35-67, ene. 2024. tab
Artículo en Español | IBECS | ID: ibc-228887

RESUMEN

Objetivo: Analizar la asociación entre situación escolar y uso de sustancias psicoactivas por parte de estudiantes con discapacidades. Métodos: Estudio transversal realizado en escuelas públicas. La población de estudio fueron estudiantes con discapacidades. Se utilizó el cuestionario Teen Addiction Severity Index. Los datos se analizaron mediante la prueba Chi-cuadrado, la prueba de tendencia lineal Chi-cuadrado (extensión de Mantel-Haenszel) y la prueba ANOVA. El estudio fue aprobado por el Comité de Ética en Investigación. Resultados: Participaron 110 estudiantes. La mayoría pertenecientes al grupo etario de entre 20 y 30 años, del sexo masculino, morenos, católicos y con discapacidades intelectuales. El 70% de los participantes refirió nunca consumir sustancias psicoactivas, mientras que el 30% afirmó haber usado estas sustancias alguna vez en la vida. Entre las sustancias consumidas, el 19,4% reportó uso de sedantes, el 4,6% consumo de alcohol, el 0,9% uso de opiáceos y el 0,9% de tabaco. Se registró una asociación entre edad y uso de sustancias psicoactivas. No hubo asociación significativa alguna entre situación escolar y consumo de estas sustancias. Conclusiones: Los hallazgos destacaron que existe mayor consumo de sustancias psicoactivas lícitas entre los estudiantes con discapacidades, lo que se asocia con la edad. Estos resultados son importantes para que los enfermeros desarrollen sus actividades de prevención del abuso de sustancias psicoactivas (AU)


Objetivo: Analisar a associação entre a situação escolar e o uso de substâncias psicoativas por estudantes com deficiência. Métodos: Estudo transversal realizado em escolas públicas. A população do estudo foi composta por estudantes com deficiência. Utilizou-se o questionário Teen Addiction Severity Index. Os dados foram analisados por meio dos testes Qui quadrado, Qui-quadrado (extensão de Mantel-Haenszel) e ANOVA. Estudo aprovado pelo Comitê de Ética em Pesquisa. Resultados: Participaram 110 estudantes. A maioria pertence a faixa etária entre 20 e 30 anos de idade, sexo masculino, pardos, católicos e com deficiência intelectual. 70% dos participantes referiu que nunca consumiu substâncias psicoativas, enquanto que 30% afirma ter consumido alguma substância pelo menos uma vez na vida. Dentre as substâncias consumidas, 19,4% relataram uso de sedativos, 4,6% uso de álcool, 0,9% uso de opiáceos e 0,9% de tabaco. Houve associação entre idade e o uso de substâncias psicoativas. Não houve associação significativa entre a situação escolar e o uso destas substâncias. Conclusões: Os resultados destacaram que existe um maior consumo de substâncias psicoativas lícitas entre os estudantes com deficiência, o que está associado com a idade. Estes resultados são importantes para que os enfermeiros desenvolvam suas atividades de prevenção ao abuso de substâncias psicoativas (AU)


Objective: To analyze the association between school situation and use of psychoactive substances by students with disabilities. Methods: A cross-sectional study carried out in public schools. The study population was students with disabilities. The Teen Addiction Severity Index questionnaire was used. The data were analyzed using the Chi-square test, the linear trend Chi-square test (Mantel-Haenszel extension) and the ANOVA test. The study was approved by Research Ethics Committee. Results: The participants were 110 students, most of them belonging to the age group between 20 and 30 years old, male, brown-skinned, Catholics, and with intellectual disabilities. 70% of the participants reported never having used psychoactive substances; in turn, 30% asserted having used these substances at least once in their lifetime. Among the substances consumed, 19.4% reported sedatives, 4.6% alcohol, 0.9% opioids, and 0.9% tobacco. There was an association between age and use of psychoactive substances. There was no significant association between school situation and use of these substances. Conclusions: The findings highlighted that there is greater consumption of licit psychoactive substances among students with disabilities, which is associated with age. These results are important for nurses to develop their activities to prevent psychoactive substance abuse (AU)


Asunto(s)
Humanos , Masculino , Femenino , Adulto Joven , Adulto , Educación de las Personas con Discapacidad Intelectual , Discapacidad Intelectual/tratamiento farmacológico , Psicotrópicos/uso terapéutico , Estudios Transversales , Encuestas y Cuestionarios
5.
Int Rev Neurobiol ; 173: 43-65, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37993179

RESUMEN

Engagement in challenging behaviour (e.g., aggression, self-injury) is reported to occur in neurodevelopmental disorders such as intellectual disabilities (ID), autism spectrum disorder (ASD), and fragile X syndrome (FXS). Common interventions to address these behaviours include both behavioural and pharmacological approaches. Although psychotropic medications are commonly used to address challenging behaviour in ID, ASD, and FXS, demonstration of the effectiveness of treatment is limited. Furthermore, research examining interaction effects between psychotropic medication, challenging behaviour, and environmental events within specific neurodevelopmental disorders such as ID, ASD, and FXS is scarce. The purpose of this chapter is to provide an overview of challenging behaviour within ID, ASD, and FXS and of the effectiveness of psychotropic medication as an intervention for challenging behaviour within these neurodevelopmental disorders. Finally, research examining how psychotropic medication may impact the relationship between challenging behaviour and environmental events is reviewed.


Asunto(s)
Trastorno del Espectro Autista , Síndrome del Cromosoma X Frágil , Discapacidad Intelectual , Humanos , Trastorno del Espectro Autista/tratamiento farmacológico , Síndrome del Cromosoma X Frágil/tratamiento farmacológico , Discapacidad Intelectual/tratamiento farmacológico , Psicotrópicos/uso terapéutico , Agresión
6.
J Psychopharmacol ; 37(12): 1201-1208, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37937428

RESUMEN

BACKGROUND: Around 2% of the population have intellectual disabilities. Over one-third people with intellectual disabilities (PwID) present with 'challenging behaviour', which nosologically and diagnostically is an abstract concept. Challenging behaviour is influenced by a range of bio-psycho-social factors in a population, which is unable to suitably comprehend and/or communicate concerns. This predisposes to poor health and social outcomes. There is no evidence-based treatments for managing challenging behaviour. Cannabidiol (CBD) and tetrahydrocannabinol (THC) are being trialled for a range of disorders, which are over-represented in PwID and provoke challenging behaviours, such as severe epilepsy, spasticity, post-traumatic stress disorder, social phobia, pain, etc. METHODS: This perspective review explores the different conditions, which benefit from medicinal CBD/THC preparations, by analysing recent literature from neurobiological, pre-clinical and clinical studies related to the topic. The evidence is synthesised to build an argument of the therapeutic benefits and challenges of medicinal cannabis to manage severe challenging behaviour in PwID. RESULTS: There is developing evidence of medicinal CBD/THC improving psychiatric and behavioural presentations in general. In particular, there is emergent proof in certain key areas of influence of medicinal CBD/THC positively supporting challenging behaviour, for example in children with neurodevelopmental disorders. However, there are significant challenges in employing such treatments in vulnerable populations such as PwID. CONCLUSION: Further clinical research for the considered use of medicinal CBD/THC for challenging behaviour management in PwID is needed. Strong co-production with experts with lived experience is needed for further testing to be done in this exciting new area.


Asunto(s)
Cannabidiol , Cannabis , Discapacidad Intelectual , Marihuana Medicinal , Abuso de Sustancias por Vía Intravenosa , Niño , Humanos , Marihuana Medicinal/uso terapéutico , Discapacidad Intelectual/tratamiento farmacológico , Abuso de Sustancias por Vía Intravenosa/tratamiento farmacológico , Cannabidiol/uso terapéutico , Dronabinol
7.
Health Technol Assess ; 27(15): 1-83, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37842916

RESUMEN

Background: Antidepressants are commonly prescribed during pregnancy, despite a lack of evidence from randomised trials on the benefits or risks. Some studies have reported associations of antidepressants during pregnancy with adverse offspring neurodevelopment, but whether or not such associations are causal is unclear. Objectives: To study the associations of antidepressants for depression in pregnancy with outcomes using multiple methods to strengthen causal inference. Design: This was an observational cohort design using multiple methods to strengthen causal inference, including multivariable regression, propensity score matching, instrumental variable analysis, negative control exposures, comparison across indications and exposure discordant pregnancies analysis. Setting: This took place in UK general practice. Participants: Participants were pregnant women with depression. Interventions: The interventions were initiation of antidepressants in pregnancy compared with no initiation, and continuation of antidepressants in pregnancy compared with discontinuation. Main outcome measures: The maternal outcome measures were the use of primary care and secondary mental health services during pregnancy, and during four 6-month follow-up periods up to 24 months after pregnancy, and antidepressant prescription status 24 months following pregnancy. The child outcome measures were diagnosis of autism, diagnosis of attention deficit hyperactivity disorder and intellectual disability. Data sources: UK Clinical Practice Research Datalink. Results: Data on 80,103 pregnancies were used to study maternal primary care outcomes and were linked to 34,274 children with at least 4-year follow-up for neurodevelopmental outcomes. Women who initiated or continued antidepressants during pregnancy were more likely to have contact with primary and secondary health-care services during and after pregnancy and more likely to be prescribed an antidepressant 2 years following the end of pregnancy than women who did not initiate or continue antidepressants during pregnancy (odds ratioinitiation 2.16, 95% confidence interval 1.95 to 2.39; odds ratiocontinuation 2.40, 95% confidence interval 2.27 to 2.53). There was little evidence for any substantial association with autism (odds ratiomultivariableregression 1.10, 95% confidence interval 0.90 to 1.35; odds ratiopropensityscore 1.06, 95% confidence interval 0.84 to 1.32), attention deficit hyperactivity disorder (odds ratiomultivariableregression 1.02, 95% confidence interval 0.80 to 1.29; odds ratiopropensityscore 0.97, 95% confidence interval 0.75 to 1.25) or intellectual disability (odds ratiomultivariableregression 0.81, 95% confidence interval 0.55 to 1.19; odds ratiopropensityscore 0.89, 95% confidence interval 0.61 to 1.31) in children of women who continued antidepressants compared with those who discontinued antidepressants. There was inconsistent evidence of an association between initiation of antidepressants in pregnancy and diagnosis of autism in offspring (odds ratiomultivariableregression 1.23, 95% confidence interval 0.85 to 1.78; odds ratiopropensityscore 1.64, 95% confidence interval 1.01 to 2.66) but not attention deficit hyperactivity disorder or intellectual disability; however, but results were imprecise owing to smaller numbers. Limitations: Several causal-inference analyses lacked precision owing to limited numbers. In addition, adherence to the prescribed treatment was not measured. Conclusions: Women prescribed antidepressants during pregnancy had greater service use during and after pregnancy than those not prescribed antidepressants. The evidence against any substantial association with autism, attention deficit hyperactivity disorder or intellectual disability in the children of women who continued compared with those who discontinued antidepressants in pregnancy is reassuring. Potential association of initiation of antidepressants during pregnancy with offspring autism needs further investigation. Future work: Further research on larger samples could increase the robustness and precision of these findings. These methods applied could be a template for future pharmaco-epidemiological investigation of other pregnancy-related prescribing safety concerns. Funding: This project was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (15/80/19) and will be published in full in Health Technology Assessment; Vol. 27, No. 15. See the NIHR Journals Library website for further project information.


About one in seven women experience depression during pregnancy. Left untreated, this may harm them and their unborn babies. However, the decision to take antidepressants during pregnancy is difficult because women often worry about the risks to their unborn baby. Research findings have been inconsistent, so women often do not have clear information to enable them to make informed decisions. We studied women's and children's outcomes after starting (compared with not starting) or continuing (compared with stopping) antidepressants in pregnancy. We used a large UK primary care database and several novel methods of analysis. We tracked 80,103 pregnancies of women with depression for up to 2 years after pregnancy. We also tracked 34,274 children from these pregnancies for at least 4 years to check for developmental outcomes. Women prescribed antidepressants were more likely than women not prescribed antidepressants to use general practice and mental health services during and after pregnancy, and to be prescribed antidepressants 2 years after pregnancy. This suggests that antidepressants were being prescribed to women with greater clinical need. Women who continued antidepressants in pregnancy had no higher likelihood than those who discontinued antidepressants of autism, attention deficit hyperactivity disorder or intellectual disability in their children. This should reassure women making the decision to continue taking their medications in pregnancy. Women who started antidepressants in pregnancy may possibly have had a slightly higher likelihood of autism in their children than those who did not start them. These findings were not seen in all analyses and were based on smaller numbers; therefore, they should be viewed with caution. Importantly, over 98 in every 100 children of women who initiated or continued antidepressants in pregnancy did not receive an autism diagnosis. The findings may help women and clinicians make informed decisions on treatment with antidepressants in pregnancy.


Asunto(s)
Trastorno Autístico , Discapacidad Intelectual , Humanos , Niño , Femenino , Embarazo , Discapacidad Intelectual/tratamiento farmacológico , Antidepresivos/efectos adversos , Familia , Evaluación de la Tecnología Biomédica
8.
J Neurol ; 270(12): 5889-5902, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37610448

RESUMEN

BACKGROUND: Approximately one quarter of people with an intellectual disability (PwID) have epilepsy of whom nearly three-quarters are pharmaco-resistant. There are higher reported neuropsychiatric side-effects to anti-seizure medication (ASM) in this group. Levetiracetam (LEV) is a first-line ASM with a stronger association with neuropsychiatric symptoms for PwID than other ASMs. Brivaracetam (BRV) is a newer ASM. Recent studies suggest a beneficial effect of swapping people who experience neuropsychiatric events with LEV to BRV. However, there is limited evidence of this for PwID. This evaluation analyses real world outcomes of LEV to BRV swap for PwID compared to those without ID. METHODS: We performed a multicentre, retrospective review of clinical records. Demographic, clinical characteristics and reported adverse events of patients switched from LEV to BRV (2016-2020) were recorded at 3 months pre and 6- and 12-month post-BRV initiation. Outcomes were compared between PwID and those without and summarised using cross-tabulations and logistic regression models. A Bonferroni correction was applied. RESULTS: Of 77 participants, 46 had ID and 52% had a past psychiatric illness. 71% participants switched overnight from LEV to BRV. Seizure reduction of > 50% was seen in 40% patients. Psychiatric illness history was predictive of having neuropsychiatric side-effects with LEV but not BRV (p = 0.001). There was no significant difference for any primary outcomes between PwID versus without ID. CONCLUSIONS: Switching from LEV to BRV appears as well tolerated and efficacious in PwID as those without ID with over 90% still on BRV after 12 months.


Asunto(s)
Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Epilepsia , Discapacidad Intelectual , Abuso de Sustancias por Vía Intravenosa , Humanos , Levetiracetam/uso terapéutico , Discapacidad Intelectual/complicaciones , Discapacidad Intelectual/tratamiento farmacológico , Anticonvulsivantes/efectos adversos , Estudios de Casos y Controles , Abuso de Sustancias por Vía Intravenosa/tratamiento farmacológico , Epilepsia/complicaciones , Epilepsia/tratamiento farmacológico , Resultado del Tratamiento
9.
J Pediatr Endocrinol Metab ; 36(8): 798-802, 2023 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-37283093

RESUMEN

OBJECTIVES: The 12q14 microdeletion syndrome is a rare genetic condition characterized by intrauterine growth restriction, proportionate short stature, failure to thrive, and intellectual disability. Few reports have discussed the therapeutic aspect of patients with 12q14 microdeletion syndrome. Herein, we report the first case of 12q14 microdeletion patient treated with rhGH without growth hormone deficiency. CASE PRESENTATION: The patient presented with feeding difficulties during infancy, failure to thrive, intellectual disability and subtle dysmorphic facial features. The patient first visited the clinic at 5 years and 3 months, his height was 91.4 cm (-4.9 SD) and weight 10.0 kg (-2.86 SD). The growth hormone level was within the normal range. Bone radiological testing revealed no significant abnormalities. Genetic analysis identified a 6.97 Mb deletion at the chromosome 12q14.1-q14.3 region in the proband. Recombinant human growth hormone therapy was initiated, which lasted for 12 months, and the new height was 101.0 cm (-4.0 SD) and weight 12.0 kg (-3.6 SD). CONCLUSIONS: This report first showed that patient with 12q14 microdeletion, although without growth hormone deficiency, can benefit from human growth hormone therapy.


Asunto(s)
Trastornos de los Cromosomas , Enanismo , Hormona de Crecimiento Humana , Hipopituitarismo , Discapacidad Intelectual , Niño , Femenino , Humanos , Deleción Cromosómica , Trastornos de los Cromosomas/genética , Enanismo/genética , Pueblos del Este de Asia , Insuficiencia de Crecimiento , Hormona de Crecimiento Humana/uso terapéutico , Hormona de Crecimiento Humana/genética , Hipopituitarismo/genética , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/genética
10.
Res Dev Disabil ; 138: 104534, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37224596

RESUMEN

BACKGROUND/AIMS/METHODS: Medication information is available from many sources. This short report provides a simple description of where caregivers of people with intellectual/developmental disability (IDD) obtain medication information, and compares these sources between family caregivers and direct support professionals (DSP). PROCEDURES/OUTCOMES: Cross-sectional study design using an internet-based survey of caregivers, aged 18 years or older, who provided support to adults with IDD. The primary outcome is the source of medication information reported by caregivers. RESULTS/CONCLUSIONS: Eighty-nine caregivers responded. Health care professionals were the primary source (87.6 %) of medication information, followed by the internet (77.5 %). There was no difference between caregiver groups for these two sources. The prescription label/information sheet was the next most common source (56.2 %), with significantly more family (76.2 %) versus DSP (38.3 %), p < 0.001. A medication reference was also common (43.8 %), with 28.6 % of family and 57.4 % of DSP, p = 0.006. House manager/nurse was next, with 16.9 %, and television/radio as a source (10.1 %), no difference between groups. Lastly, friends or coworkers were 7.9 %, with no DSP endorsing this option, p = 0.006. IMPLICATIONS: Caregivers obtain medication information from a variety of sources, with health care professionals being the primary source. The internet was also very common, which may be worrisome, due to the wide range of level of quality of information available. Educational interventions should be developed to provide caregivers with tools to be able identify and use legitimate medication information.


Asunto(s)
Cuidadores , Discapacidad Intelectual , Adulto , Niño , Humanos , Discapacidades del Desarrollo/tratamiento farmacológico , Estudios Transversales , Personal de Salud , Discapacidad Intelectual/tratamiento farmacológico
11.
Ann Neurol ; 94(2): 332-349, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37062836

RESUMEN

OBJECTIVE: Pathogenic variants in KCNT2 are rare causes of developmental epileptic encephalopathy (DEE). We herein describe the phenotypic and genetic features of patients with KCNT2-related DEE, and the in vitro functional and pharmacological properties of KCNT2 channels carrying 14 novel or previously untested variants. METHODS: Twenty-five patients harboring KCNT2 variants were investigated: 12 were identified through an international collaborative network, 13 were retrieved from the literature. Clinical data were collected and included in a standardized phenotyping sheet. Novel variants were detected using exome sequencing and classified using ACMG criteria. Functional and pharmacological studies were performed by whole-cell electrophysiology in HEK-293 and SH-SY5Y cells. RESULTS: The phenotypic spectrum encompassed: (a) intellectual disability/developmental delay (21/22 individuals with available information), ranging from mild to severe/profound; (b) epilepsy (15/25); (c) neurological impairment, with altered muscle tone (14/22); (d) dysmorphisms (13/20). Nineteen pathogenic KCNT2 variants were found (9 new, 10 reported previously): 16 missense, 1 in-frame deletion of a single amino acid, 1 nonsense, and 1 frameshift. Among tested variants, 8 showed gain-of-function (GoF), and 6 loss-of-function (LoF) features when expressed heterologously in vitro. Quinidine and fluoxetine blocked all GoF variants, whereas loxapine and riluzole activated some LoF variants while blocking others. INTERPRETATION: We expanded the phenotypic and genotypic spectrum of KCNT2-related disorders, highlighting novel genotype-phenotype associations. Pathogenic KCNT2 variants cause GoF or LoF in vitro phenotypes, and each shows a unique pharmacological profile, suggesting the need for in vitro functional and pharmacological investigation to enable targeted therapies based on the molecular phenotype. ANN NEUROL 2023;94:332-349.


Asunto(s)
Discapacidad Intelectual , Neuroblastoma , Humanos , Células HEK293 , Fenotipo , Genotipo , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/genética , Canales de potasio activados por Sodio/genética
12.
Brain ; 146(8): 3331-3346, 2023 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-37068912

RESUMEN

Pitt-Hopkins syndrome is an autism spectrum disorder caused by autosomal dominant mutations in the human transcription factor 4 gene (TCF4). One pathobiological process caused by murine Tcf4 mutation is a cell autonomous reduction in oligodendrocytes and myelination. In this study, we show that the promyelinating compounds, clemastine, sobetirome and Sob-AM2 are effective at restoring myelination defects in a Pitt-Hopkins syndrome mouse model. In vitro, clemastine treatment reduced excess oligodendrocyte precursor cells and normalized oligodendrocyte density. In vivo, 2-week intraperitoneal administration of clemastine also normalized oligodendrocyte precursor cell and oligodendrocyte density in the cortex of Tcf4 mutant mice and appeared to increase the number of axons undergoing myelination, as EM imaging of the corpus callosum showed a significant increase in the proportion of uncompacted myelin and an overall reduction in the g-ratio. Importantly, this treatment paradigm resulted in functional rescue by improving electrophysiology and behaviour. To confirm behavioural rescue was achieved via enhancing myelination, we show that treatment with the thyroid hormone receptor agonist sobetirome or its brain penetrating prodrug Sob-AM2, was also effective at normalizing oligodendrocyte precursor cell and oligodendrocyte densities and behaviour in the Pitt-Hopkins syndrome mouse model. Together, these results provide preclinical evidence that promyelinating therapies may be beneficial in Pitt-Hopkins syndrome and potentially other neurodevelopmental disorders characterized by dysmyelination.


Asunto(s)
Trastorno del Espectro Autista , Discapacidad Intelectual , Humanos , Animales , Ratones , Clemastina , Trastorno del Espectro Autista/tratamiento farmacológico , Trastorno del Espectro Autista/genética , Preparaciones Farmacéuticas , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/genética
13.
Br J Clin Pharmacol ; 89(7): 2028-2038, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37060156

RESUMEN

People with intellectual disabilities (PwID) have a bidirectional relationship with epilepsy. Nearly 25% of PwID have seizures and 30% people with epilepsy are thought to have a significant intellectual impairment. Furthermore, 70% of PwID are thought to have treatment-resistant epilepsy. In the United Kingdom, antiseizure medications (ASMs) are the second most widely prescribed psychotropic agent for PwID. However, it is unclear what the current evidence and patterns is on current prescribing of ASMs, including when and how a case is made to withdraw them. A narrative review along with an analysis of large-scale NHS Digital published data (2015-2020) on several aspects of ASM prescribing by general practices for PwID was undertaken. The review results and data analysis are consolidated and presented as 11 themes to provide a comprehensive overview of the study topic. Recent studies estimate that one-third and one-fifth of PwID are prescribed ASMs. A history of epilepsy is seen as the primary prescribing reason; however, often it is a legacy, and the indication is no longer clear. The proportion receiving ASMs continues to rise with age. This pattern of use does not correlate well with seizure onset. There are limited data on de-prescribing ASMs in PwID. The study population heterogenicity, associated polypharmacy, multimorbidity and higher sudden unexpected death in epilepsy risks are outlined. Suggestions are made from available evidence for improving prescribing practices for PwID and seizures, and key areas for further research in this complex clinical area are outlined.


Asunto(s)
Epilepsia , Medicina General , Discapacidad Intelectual , Abuso de Sustancias por Vía Intravenosa , Humanos , Discapacidad Intelectual/complicaciones , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/epidemiología , Epilepsia/complicaciones , Epilepsia/tratamiento farmacológico , Epilepsia/epidemiología , Convulsiones/tratamiento farmacológico , Convulsiones/epidemiología , Convulsiones/etiología
14.
Toxins (Basel) ; 15(4)2023 03 23.
Artículo en Inglés | MEDLINE | ID: mdl-37104174

RESUMEN

Self-injurious behaviors are repetitive, persistent actions directed toward one's body that threaten or cause physical harm. These behaviors are seen within a broad spectrum of neurodevelopmental and neuropsychiatric conditions, often associated with intellectual disability. Injuries can be severe and distressing to patients and caregivers. Furthermore, injuries can be life-threatening. Often, these behaviors are challenging to treat and require a tiered, multimodal approach which may include mechanical/physical restraints, behavioral therapy, pharmacotherapy, or in some cases, surgical management, such as tooth extraction or deep brain stimulation. Here, we describe a series of 17 children who presented to our institution with self-injurious behaviors in whom botulinum neurotoxin injections were found helpful in preventing or lessening self-injury.


Asunto(s)
Toxinas Botulínicas , Discapacidad Intelectual , Conducta Autodestructiva , Humanos , Niño , Toxinas Botulínicas/uso terapéutico , Neurotoxinas/uso terapéutico , Conducta Autodestructiva/complicaciones , Conducta Autodestructiva/psicología , Discapacidad Intelectual/complicaciones , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/psicología , Inyecciones
15.
J Intellect Disabil Res ; 67(6): 519-530, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36880447

RESUMEN

BACKGROUND: There is evidence that psychotropic medications are overprescribed and overused to manage behaviours of concern for people with intellectual disabilities. Disability support workers and support staff lack education and training on the administration and safety of psychotropic medication use. This study aimed to test the applicability and preliminary efficacy of SPECTROM, an education programme developed in the UK, in an Australian context. METHODS: The training comprises two parts: Module 1 encompasses psychotropic medications, their use and side effects. Module 2 focuses on non-pharmacological interventions for supporting people with behaviours of concern. Thirty-three participants attended the training course and completed pre-training and post-training surveys on the Psychotropic Knowledge Questionnaire and Management of Aggression and Violence Attitude Scale-Revised at four time points: pre-training, 2 weeks, 3 months and 5 months post-training. RESULTS: Psychotropic Knowledge Questionnaire scores showed statistically significant post-training improvement at all post-training time points (P < 0.05). Management of Aggression and Violence Attitude Scale-Revised scores were high at pre-training and did not change significantly at any of the post-training survey time points. A 2-week post-training feedback questionnaire reported 80% agreement that the training programme was appropriate, useful and valid. Only 36% of participants completed questionnaires at all time points. CONCLUSIONS: SPECTROM training increased staff knowledge of psychotropic medications, yet loss of participants was high. Further refinement of the applicability of the training for the Australian context and evaluation of the feasibility of implementation, clinical and cost-effectiveness of the programme are required.


Asunto(s)
Discapacidad Intelectual , Humanos , Australia , Discapacidad Intelectual/tratamiento farmacológico , Proyectos Piloto , Psicotrópicos/uso terapéutico , Apoyo a la Formación Profesional
16.
BMC Psychiatry ; 23(1): 202, 2023 03 28.
Artículo en Inglés | MEDLINE | ID: mdl-36978032

RESUMEN

BACKGROUND: Clear evidence of overprescribing of psychotropic medicines to manage behaviours that challenges in people with intellectual disabilities has led to national programmes within the U.K. such as NHS England's STOMP to address this. The focus of the intervention in our review was deprescribing of psychotropic medicines in children and adults with intellectual disabilities. Mental health symptomatology and quality of life were main outcomes. METHODS: We reviewed the evidence using databases Medline, Embase, PsycINFO, Web of Science, CINAHL and Open Grey with an initial cut-off date of 22nd August 2020 and an update on 14th March 2022. The first reviewer (DA) extracted data using a bespoke form and appraised study quality using CASP and Murad tools. The second reviewer (CS) independently assessed a random 20% of papers. RESULTS: Database searching identified 8675 records with 54 studies included in the final analysis. The narrative synthesis suggests that psychotropic medicines can sometimes be deprescribed. Positive and negative consequences were reported. Positive effects on behaviour, mental and physical health were associated with an interdisciplinary model. CONCLUSIONS: This is the first systematic review of the effects of deprescribing psychotropic medicines in people with intellectual disabilities which is not limited to antipsychotics. Main risks of bias were underpowered studies, poor recruitment processes, not accounting for other concurrent interventions and short follow up periods. Further research is needed to understand how to address the negative effects of deprescribing interventions. TRIAL REGISTRATION: The protocol was registered with PROSPERO (registration number CRD42019158079).


Asunto(s)
Deprescripciones , Discapacidad Intelectual , Niño , Adulto , Humanos , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/psicología , Calidad de Vida , Salud Mental , Psicotrópicos/uso terapéutico
17.
Ned Tijdschr Geneeskd ; 1672023 03 16.
Artículo en Holandés | MEDLINE | ID: mdl-36928629

RESUMEN

In The Netherlands, approximately 1 in 8 citizens (2.2 million) have an IQ between 70 and 85. Together the combination of a low IQ (< 70) and low adaptive functioning is referred to as mild intellectual disability (ID). People with ID are vulnerable to stress and psychological problems. The diagnosis and treatment of psychotic symptoms in patients with mild ID can prove to be a challenge. In this clinical lesson we present two different cases. We encourage physicians to adhere to a holistic approach. Furthermore the AAIDD model may guide structuring the analysis of psychotic symptoms. This enables finding the right treatment which may include medical treatment or emphasis on context improvement or a combination of both. Upon treatment initiation with antipsychotics, it's important to start low and go slow regarding the dosage. And if the context is the main problem, it is important to taper off the use of antipsychotics.


Asunto(s)
Antipsicóticos , Discapacidad Intelectual , Médicos , Trastornos Psicóticos , Humanos , Discapacidad Intelectual/complicaciones , Discapacidad Intelectual/diagnóstico , Discapacidad Intelectual/tratamiento farmacológico , Antipsicóticos/uso terapéutico , Trastornos Psicóticos/complicaciones , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/tratamiento farmacológico , Pacientes
18.
Br J Psychiatry ; 222(5): 191-195, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36786124

RESUMEN

Antiseizure medications (ASMs) are the second most widely prescribed psychotropic for people with intellectual disabilities in England. Multiple psychotropic prescribing is prevalent in almost half of people with intellectual disabilities on ASMs. This analysis identifies limited evidence of ASM benefit in challenging behaviour management and suggests improvements needed to inform clinical practice.


Asunto(s)
Discapacidad Intelectual , Humanos , Adulto , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/epidemiología , Psicotrópicos/uso terapéutico , Inglaterra/epidemiología
19.
J Appl Res Intellect Disabil ; 36(3): 594-603, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36808782

RESUMEN

BACKGROUND: Overprescribing of off-licence psychotropic medications, particularly antipsychotics, for challenging behaviours in people with intellectual disabilities without a psychiatric disorder is a significant public health concern. In the United Kingdom, the National Health Service England launched an initiative in 2016, 'STopping Over-Medication of People with learning disabilities, autism or both (STOMP)', to address this concern. STOMP is supposed to encourage psychiatrists in the United Kingdom and elsewhere to rationalise psychotropic medication use in people with intellectual disabilities. The current study aims to gather UK psychiatrists' views and experience of implementing the STOMP initiative. METHODS: An online questionnaire was sent to all UK psychiatrists working in the field of intellectual disabilities (estimated 225). Two open-ended questions allowed participants to write comments in response to these questions in the free text boxes. One question asked about the challenges psychiatrists faced locally to implement STOMP, and the other asked for examples of successes and positive experiences from the process. The free text data were analysed using a qualitative method with the help of the NVivo 12 plus software. RESULTS: Eighty-eight (estimated 39%) psychiatrists returned the completed questionnaire. The qualitative analysis of free-text data has shown variation within services in the experience and views of the psychiatrists. In areas with good support for STOMP implementation provided through adequate resources, psychiatrists reported satisfaction in the process with successful antipsychotic rationalisation, better local multi-disciplinary and multi-agency working, and increased awareness of STOMP issues among the stakeholders such as people with intellectual disabilities and their caregivers and multidisciplinary teams, and improved quality of life caused by reduced medication-related adverse events in people with intellectual disabilities. However, where resource utilisation is not optimum, psychiatrists seemed dissatisfied with the process with little success in medication rationalisation. CONCLUSIONS: Whereas some psychiatrists are successful and enthusiastic about rationalising antipsychotics, others still face barriers and challenges. Much work is needed to achieve a uniformly positive outcome throughout the United Kingdom.


Asunto(s)
Antipsicóticos , Discapacidad Intelectual , Psiquiatría , Humanos , Adulto , Antipsicóticos/uso terapéutico , Discapacidad Intelectual/tratamiento farmacológico , Discapacidad Intelectual/psicología , Calidad de Vida , Medicina Estatal , Reino Unido , Encuestas y Cuestionarios , Análisis de Datos
20.
J Appl Res Intellect Disabil ; 36(3): 486-496, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36655535

RESUMEN

BACKGROUND: Adults with intellectual disability are at higher risk of being administered psychotropic medications. The UK-developed SPECTROM (Short-term PsychoEducation for Carers To Reduce Over Medication of people with intellectual disabilities) training programme educates disability support workers on psychotropic medications and alternatives to these medications. METHOD: Interviews were conducted with 10 participants who took part in the pilot SPECTROM training programme to elicit their views on the programme and its appropriateness in an Australian context. RESULTS: The key theme was 'Need for a psychotropic medication practice framework'. Four sub-themes were Broad satisfaction with the SPECTROM training programme; Disability support workers acknowledging the limitations of their scope of practice; Empowering training through prescriptive and reflective methods and; Need for future mentoring from Multi-Disciplinary Team members in the application of new knowledge. CONCLUSIONS: Participants felt that whilst they could improve their knowledge and attitudes surrounding psychotropic medication administration for behaviours of concern through SPECTROM training, a national practice framework is needed to execute its goals at scale.


Asunto(s)
Discapacidad Intelectual , Humanos , Adulto , Discapacidad Intelectual/tratamiento farmacológico , Australia , Psicotrópicos/uso terapéutico , Cuidadores , Práctica Profesional
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...