Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 24
Filtrar
1.
Front Psychol ; 14: 1237278, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37928564

RESUMO

Introduction: Empathy is a complex, multifaceted ability allowing for the most basic forms of social communication and plays a prominent role in multiple aspects of everyday lives. In this intensive longitudinal study, we assessed how empathy interacts with stress to predict central domains of psychosocial functioning: mental health, romantic relationships, and parenting. Methods: Fluctuations and individual differences in empathy were assessed across eight time points, where participants from the general population (N = 566) self-reported their empathy, stress, depressive symptoms, romantic satisfaction, and parental functioning. Results: Both trait and state aspects of empathy were associated with all psychosocial outcomes, with state empathy showing a stronger effect. Additionally, empathy components interacted with stress-emotional empathy better-predicted outcomes under high stress, while cognitive empathy under low stress. Discussion: Our findings advance the theoretical understanding of empathy, emphasizing the effects of state-dependent empathy fluctuations on our everyday mental and social lives.

2.
Front Psychol ; 14: 1153447, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37275732

RESUMO

Introduction: Empathy is part of basic social cognition and is central to everyday interactions. Indeed, emotional and cognitive empathy deficits are related to various psychopathologies, yet the links reported have been inconsistent. Thus, the mechanism underlying these inconsistent links is poorly understood. At least a partial answer may lie in that the dependency between cognitive and emotional empathy has been overlooked. Here, we examined the (dis)equilibrium between emotional and cognitive empathy and how it relates to individual differences in clinical traits. We further examined a possible mediator of these links-emotional reactivity. Methods: Participants (N = 425) from the general population reported on their empathy, emotional reactivity, autistic traits, psychopathic tendencies, and symptoms of depression and anxiety. Results: Beyond empathy, both extremes of empathic disequilibrium were associated with various features of clinical conditions; Higher emotional relative to cognitive empathy was related to the social domain of autism and anxiety, while higher cognitive relative to emotional empathy was related to the non-social domain of autism, depression symptoms, and psychopathic tendencies. The associations with autistic traits, anxiety, and psychopathic tendencies were mediated by emotional reactivity. Discussion: Our findings suggest a new framework for understanding how individual variability in empathy is expressed in various psychopathologies.

3.
Autism Res ; 16(6): 1225-1235, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37119025

RESUMO

Some individuals with autism spectrum disorder (ASD) demonstrate marked behavioral improvements during febrile episodes, in what is perhaps the only present-day means of modulating the core ASD phenotype. Understanding the nature of this so-called fever effect is therefore essential for leveraging this natural temporary relief of symptoms to a sustained efficacious intervention. Toward this goal, we used machine learning to analyze the rich clinical data of the Simons Simplex Collection, in which one out of every six children with ASD was reported to improve during febrile episodes, across multiple ASD domains. Reported behavioral improvements during febrile episodes were associated with maternal infection in pregnancy (OR = 1.7, 95% CI = [1.42, 2.03], P = 4.24 × 10-4 ) and gastrointestinal (GI) dysfunction (OR = 1.46, 95% CI = [1.15, 1.81], P = 1.94 × 10-3 ). Family members of children reported to improve when febrile have an increased prevalence of autoimmune disorders (OR = 1.43, 95% CI = [1.23, 1.67], P = 3.0 × 10-6 ), language disorders (OR = 1.63, 95% CI = [1.29, 2.04], P = 2.5 × 10-5 ), and neuropsychiatric disorders (OR = 1.59, 95% CI = [1.34, 1.89], P < 1 × 10-6 ). Since both GI abnormalities and maternal immune activation have been linked to ASD via proinflammatory cytokines, these results might suggest a possible involvement of immune dysregulation in the fever effect, consistent with findings in mouse models. This work advances our understanding of the fever-responsive ASD subtype and motivates the future studies to directly test the link between proinflammatory cytokines and behavioral modifications in individuals with ASD.


Assuntos
Transtorno do Espectro Autista , Gastroenteropatias , Gravidez , Feminino , Animais , Camundongos , Transtorno do Espectro Autista/complicações , Transtorno do Espectro Autista/epidemiologia , Transtorno do Espectro Autista/diagnóstico , Febre/complicações , Febre/epidemiologia , Gastroenteropatias/complicações , Fenótipo , Citocinas
4.
Mucosal Immunol ; 16(3): 233-249, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36868479

RESUMO

The loss of IL-10R function leads to severe early onset colitis and, in murine models, is associated with the accumulation of immature inflammatory colonic macrophages. We have shown that IL-10R-deficient colonic macrophages exhibit increased STAT1-dependent gene expression, suggesting that IL-10R-mediated inhibition of STAT1 signaling in newly recruited colonic macrophages might interfere with the development of an inflammatory phenotype. Indeed, STAT1-/- mice exhibit defects in colonic macrophage accumulation after Helicobacter hepaticus infection and IL-10R blockade, and this was phenocopied in mice lacking IFNγR, an inducer of STAT1 activation. Radiation chimeras demonstrated that reduced accumulation of STAT1-deficient macrophages was based on a cell-intrinsic defect. Unexpectedly, mixed radiation chimeras generated with both wild-type and IL-10R-deficient bone marrow indicated that rather than directly interfering with STAT1 function, IL-10R inhibits the generation of cell extrinsic signals that promote the accumulation of immature macrophages. These results define the essential mechanisms controlling the inflammatory macrophage accumulation in inflammatory bowel diseases.


Assuntos
Colite , Camundongos , Animais , Colite/metabolismo , Macrófagos/metabolismo , Receptores de Interleucina-10/genética , Receptores de Interleucina-10/metabolismo , Transdução de Sinais , Camundongos Endogâmicos C57BL , Camundongos Knockout
5.
Sci Rep ; 12(1): 17657, 2022 10 21.
Artigo em Inglês | MEDLINE | ID: mdl-36271079

RESUMO

Delineation of public concerns that prevent vaccine compliance is a major step in generating assurances and enhancing the success of COVID-19 prevention programs. We therefore sought to identify public concerns associated with COVID-19 vaccines, as reflected by web and social media searches, with a focus on menstrual irregularities. We used trajectory analyses of web and social media search data in combination with global COVID-19 data to reveal time-dependent correlations between vaccination rates and the relative volume of vaccine and period related searches. A surge of period and vaccine related Google searches followed the introduction of Covid vaccines around the world, and the commencement of vaccination programs in English speaking countries and across the United States. The relative volume of searches such as "Covid vaccine menstrual irregularities", "Covid vaccine menstrual period", "Pfizer vaccine menstruation", and "Moderna vaccine menstruation" was each significantly correlated with vaccination rates (Spearman r = 0.42-0.88, P = 4.33 × 10-34-1.55 × 10-5), and significantly different before and after the introduction of Covid vaccines (Mann-Whitney P = 2.00 × 10-21-7.10 × 10-20). TikTok users were more engaged in period problems in 2021 than ever before. International, national, and state-level correlations between COVID-19 vaccinations and online activity demonstrate a global major concern of vaccine-related menstrual irregularities. Whether it is a potential side effect or an unfounded worry, monitoring of web and social media activity could reveal the public perception of COVID-19 prevention efforts, which could then be directly addressed and translated into insightful public health strategies.


Assuntos
COVID-19 , Mídias Sociais , Vacinas , Feminino , Humanos , Estados Unidos/epidemiologia , Vacinas contra COVID-19/efeitos adversos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Vacinação/efeitos adversos , Distúrbios Menstruais
6.
Autism Res ; 15(10): 1917-1928, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36053924

RESUMO

A large body of research showed that autistic people have intact emotional (affective) empathy alongside reduced cognitive empathy. However, there are mixed findings and these call for a more subtle understanding of empathy in autism. Empathic disequilibrium refers to the imbalance between emotional and cognitive empathy and is associated with a higher number of autistic traits in the typical population. Here we examined whether empathic disequilibrium predicts both the number of autistic traits and autism diagnosis. In a large sample of autistic (N = 1905) and typical individuals (N = 3009), we examined empathic disequilibrium and empathy as predictors of autistic traits and autism diagnosis, using a polynomial regression with response surface analysis. Empathy and autistic traits were measured using validated self-report questionnaires. Both empathic disequilibrium and empathy predicted linearly and non-linearly autism diagnosis and autistic traits. Specifically, a tendency towards higher emotional than cognitive empathy (empathic disequilibrium towards emotional empathy) predicted both autism diagnosis and the social domain of autistic traits, while higher cognitive than emotional empathy was associated with the non-social domain of autism. Empathic disequilibrium was also more prominent in autistic females. This study provides evidence that beyond empathy as was measured thus far, empathic disequilibrium offers a novel analytical approach for examining the role of empathy. Empathic disequilibrium allows for a more nuanced understanding of the links between empathy and autism. LAY SUMMARY: Many autistic individuals report feelings of excessive empathy, yet their experience is not reflected by most of the current literature, typically suggesting that autism is characterized by intact emotional and reduced cognitive empathy. To fill this gap, we looked at both ends of the imbalance between these components, termed empathic disequilibrium. We show that, like empathy, empathic disequilibrium is related to autism diagnosis and traits, and thus may provide a more nuanced understanding of empathy and its link with autism.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Transtorno do Espectro Autista/diagnóstico , Transtorno do Espectro Autista/psicologia , Transtorno Autístico/psicologia , Empatia , Feminino , Humanos , Fenótipo , Inquéritos e Questionários
7.
J Crohns Colitis ; 16(9): 1380-1396, 2022 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-35366317

RESUMO

BACKGROUND AND AIMS: Over 80 monogenic causes of very early onset inflammatory bowel disease [VEOIBD] have been identified. Prior reports of the natural history of VEOIBD have not considered monogenic disease status. The objective of this study is to describe clinical phenotypes and outcomes in a large single-centre cohort of patients with VEOIBD and universal access to whole exome sequencing [WES]. METHODS: Patients receiving IBD care at a single centre were prospectively enrolled in a longitudinal data repository starting in 2012. WES was offered with enrollment. Enrolled patients were filtered by age of diagnosis <6 years to comprise a VEOIBD cohort. Monogenic disease was identified by filtering proband variants for rare, loss-of-function, or missense variants in known VEOIBD genes inherited according to standard Mendelian inheritance patterns. RESULTS: This analysis included 216 VEOIBD patients, followed for a median of 5.8 years. Seventeen patients [7.9%] had monogenic disease. Patients with monogenic IBD were younger at diagnosis and were more likely to have Crohn's disease phenotype with higher rates of stricturing and penetrating disease and extraintestinal manifestations. Patients with monogenic disease were also more likely to experience outcomes of intensive care unit [ICU] hospitalisation, gastrostomy tube, total parenteral nutrition use, stunting at 3-year follow-up, haematopoietic stem cell transplant, and death. A total of 41 patients [19.0%] had infantile-onset disease. After controlling for monogenic disease, patients with infantile-onset IBD did not have increased risk for most severity outcomes. CONCLUSIONS: Monogenic disease is an important driver of disease severity in VEOIBD. WES is a valuable tool in prognostication and management of VEOIBD.


Assuntos
Doença de Crohn , Doenças Inflamatórias Intestinais , Idade de Início , Doença de Crohn/diagnóstico , Doença de Crohn/genética , Doença de Crohn/terapia , Humanos , Doenças Inflamatórias Intestinais/diagnóstico , Doenças Inflamatórias Intestinais/genética , Doenças Inflamatórias Intestinais/terapia , Intestinos , Fenótipo
8.
Eur J Hum Genet ; 30(12): 1363-1372, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35246665

RESUMO

RNA-DNA differences (RDD) have previously been identified in the human mitochondrial RNA (mt-RNA) transcripts, yet their functional impact is poorly understood. By analyzing 4928 RNA-seq samples from 23 body sites, we found that mtDNA gene expression negatively correlated with the levels of both m1A 947 16 S rRNA modification (mtDNA position 2617) and the m1A 1812 ND5 mRNA modification (mtDNA position 13,710) in 15 and 14 body sites, respectively. Such correlation was not evident in all tested brain tissues, thus suggesting a tissue-specific impact of these modifications on mtDNA gene expression. To assess the response of the tested modifications to environmental cues, we analyzed pairs of skin samples that were either exposed to the sun or not. We found that the correlations of mtDNA gene expression with both mt-RNA modifications were compromised upon sun exposure. As a first step to explore the underlying mechanism, we analyzed RNA-seq data from keratinocytes that were exposed to increasing doses of UV irradiation. Similar to sun exposure, we found a significant decrease in mtDNA gene expression upon increase in UV dosage. In contrast, there was a significant increase in the m1A 947 16 S rRNA modification levels upon elevation in UV dose. Finally, we identified candidate modulators of such responses. Taken together, our results indicate that mt-RNA modifications functionally correlate with mtDNA gene expression, and responds to environmental cues, hence supporting their physiological importance.


Assuntos
DNA Mitocondrial , Luz Solar , Humanos , Luz Solar/efeitos adversos , RNA Mitocondrial/genética , DNA Mitocondrial/genética , RNA , Expressão Gênica
9.
J Med Genet ; 59(10): 1002-1009, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34933910

RESUMO

BACKGROUND: Loss of tectonin ß-propeller repeat-containing 2 (TECPR2) function has been implicated in an array of neurodegenerative disorders, yet its physiological function remains largely unknown. Understanding TECPR2 function is essential for developing much needed precision therapeutics for TECPR2-related diseases. METHODS: We leveraged considerable amounts of functional data to obtain a comprehensive perspective of the role of TECPR2 in health and disease. We integrated expression patterns, population variation, phylogenetic profiling, protein-protein interactions and regulatory network data for a minimally biased multimodal functional analysis. Genes and proteins linked to TECPR2 via multiple lines of evidence were subject to functional enrichment analyses to identify molecular mechanisms involving TECPR2. RESULTS: TECPR2 was found to be part of a tight neurodevelopmental gene expression programme that includes KIF1A, ATXN1, TOM1L2 and FA2H, all implicated in neurological diseases. Functional enrichment analyses of TECPR2-related genes converged on a role in late autophagy and ribosomal processes. Large-scale population variation data demonstrated that this role is non-redundant. CONCLUSIONS: TECPR2 might serve as an indicator for the energy balance between protein synthesis and autophagy, and a marker for diseases associated with their imbalance, such as Alzheimer's disease and Huntington's disease. Specifically, we speculate that TECPR2 plays an important role as a proteostasis regulator during synaptogenesis, highlighting its importance in developing neurons. By advancing our understanding of TECPR2 function, this work provides an essential stepping stone towards the development of precision diagnostics and targeted treatment options for TECPR2-related disorders.


Assuntos
Proteínas de Transporte/genética , Proteínas do Tecido Nervoso/genética , Doenças Neurodegenerativas , Autofagia , Humanos , Cinesinas , Doenças Neurodegenerativas/genética , Doenças Neurodegenerativas/metabolismo , Neurônios/metabolismo , Filogenia
10.
Children (Basel) ; 8(10)2021 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-34682145

RESUMO

It has recently been shown that children with early shigellosis are at increased risk of attention deficit/hyperactivity disorder (ADHD). This study aimed to evaluate the association between antibiotic treatment of shigellosis with long-term ADHD rates. A retrospective cohort study was conducted that included all the Leumit Health Services (LHS) enrollees aged 5-18 years between 2000-2018 with a documented Shigella-positive gastroenteritis before the age of 3 years. Of the 5176 children who were positive for Shigella gastroenteritis before the age of 3 years, 972 (18.8%) were treated with antibiotics early (<5 days), 250 (4.8%) were treated late (≥5 days), and 3954 children (76.4%) were not prescribed antibiotics. Late antibiotic treatment was associated with significantly increased rates of ADHD (adjusted OR = 1.61; 95% CI, 1.1-2.3). Early treatment with antibiotics was not associated with increased ADHD rates (adjusted OR = 1.02; 95% CI, 0.8-1.3). In conclusion, late antibiotic treatment of early childhood shigellosis was associated with increased rates of ADHD.

11.
PLoS One ; 16(5): e0251121, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33983985

RESUMO

Several angiogenesis-dependent diseases, including age-related macular degeneration and infantile hemangioma, display differential prevalence among Black, as compared to White individuals. Although socioeconomic status and genetic architecture have been suggested as explaining these differences, we have recently shown that pigment production per se might be involved. For example, we have shown that the extracellular protein fibromodulin is a pro-angiogenic factor highly secreted by melanocytes in White but not Black individuals. Still, additional pigment-dependent angiogenic factors and their molecular mechanisms remain to be identified. Understanding the contribution of pigmentation to angiogenesis in health and disease is essential for precision medicine of angiogenesis-dependent diseases with racial disparity. Toward that goal, we compared the transcriptomes of Black and White individuals in three tissues with angiogenic activity, namely artery, whole blood, and skin. We identified several differentially expressed angiogenesis pathways, including artery morphogenesis, regulation of endothelial cell chemotaxis, and cellular response to vascular endothelial growth factor stimulus. We then demonstrated that the expression of key genes in these pathways is directly modulated by the degree of pigmentation. We further identified the precise pigment production pathway controlling the expression of these genes, namely melanocortin 1 receptor (MC1R) signaling. These results demonstrate pigment-mediated regulation of angiogenesis-related pathways and their driver genes across human tissues.


Assuntos
Melanócitos/metabolismo , Neovascularização Fisiológica/genética , Neovascularização Fisiológica/fisiologia , Animais , Artérias/metabolismo , População Negra/genética , Sangue/metabolismo , Bases de Dados Genéticas , Feminino , Expressão Gênica/genética , Regulação da Expressão Gênica/genética , Humanos , Masculino , Melanócitos/fisiologia , Camundongos , Camundongos Endogâmicos C57BL , Neovascularização Fisiológica/imunologia , Especificidade de Órgãos/genética , Receptor Tipo 1 de Melanocortina/genética , Receptor Tipo 1 de Melanocortina/metabolismo , Pele/metabolismo , Transcriptoma/genética , População Branca/genética
12.
Nat Med ; 26(9): 1375-1379, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32778826

RESUMO

The promise of precision medicine lies in data diversity. More than the sheer size of biomedical data, it is the layering of multiple data modalities, offering complementary perspectives, that is thought to enable the identification of patient subgroups with shared pathophysiology. In the present study, we use autism to test this notion. By combining healthcare claims, electronic health records, familial whole-exome sequences and neurodevelopmental gene expression patterns, we identified a subgroup of patients with dyslipidemia-associated autism.


Assuntos
Transtorno Autístico/diagnóstico , Dislipidemias/diagnóstico , Medicina de Precisão/métodos , Transtorno Autístico/genética , Transtorno Autístico/patologia , Dislipidemias/genética , Dislipidemias/patologia , Registros Eletrônicos de Saúde , Exoma/genética , Feminino , Predisposição Genética para Doença/genética , Humanos , Lipídeos/sangue , Masculino , Técnicas de Diagnóstico Molecular , Sequenciamento do Exoma
15.
Sci Rep ; 9(1): 5059, 2019 03 25.
Artigo em Inglês | MEDLINE | ID: mdl-30911095

RESUMO

Efficient large-scale annotation of genomic intervals is essential for personal genome interpretation in the realm of precision medicine. There are 13 possible relations between two intervals according to Allen's interval algebra. Conventional interval trees are routinely used to identify the genomic intervals satisfying a coarse relation with a query interval, but cannot support efficient query for more refined relations such as all Allen's relations. We design and implement a novel approach to address this unmet need. Through rewriting Allen's interval relations, we transform an interval query to a range query, then adapt and utilize the range trees for querying. We implement two types of range trees: a basic 2-dimensional range tree (2D-RT) and an augmented range tree with fractional cascading (RTFC) and compare them with the conventional interval tree (IT). Theoretical analysis shows that RTFC can achieve the best time complexity for interval queries regarding all Allen's relations among the three trees. We also perform comparative experiments on the efficiency of RTFC, 2D-RT and IT in querying noncoding element annotations in a large collection of personal genomes. Our experimental results show that 2D-RT is more efficient than IT for interval queries regarding most of Allen's relations, RTFC is even more efficient than 2D-RT. The results demonstrate that RTFC is an efficient data structure for querying large-scale datasets regarding Allen's relations between genomic intervals, such as those required by interpreting genome-wide variation in large populations.


Assuntos
Algoritmos , Biologia Computacional/métodos , Genômica/métodos , Software , Humanos
16.
JAMA Pediatr ; 171(11): 1107-1112, 2017 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-28973142

RESUMO

Importance: Autism spectrum disorder (ASD) is known to be more prevalent among males than females in the general population. Although overall risk of recurrence of ASD among siblings has been estimated to be between 6.1% and 24.7%, information on sex-specific recurrence patterns is lacking. Objective: To estimate high-confidence sex-specific recurrence rates of ASD among siblings. Design, Setting, and Participants: This observational study used an administrative database to measure the incidence of ASD among children in 1 583 271 families (37 507 with at least 1 diagnosis of ASD) enrolled in commercial health care insurance plans at a large US managed health care company from January 1, 2008, through February 29, 2016. Families in the study had 2 children who were observed for at least 12 months between 4 and 18 years of age. Main Outcomes and Measures: The primary measure of ASD recurrence was defined as the diagnosis of ASD in a younger sibling of an older sibling with an ASD diagnosis. Results: Among the 3 166 542 children (1 547 266 females and 1 619 174 males; mean [SD] age, 11.2 [4.7] years) in the study, the prevalence of ASD was 1.96% (95% CI, 1.94%-1.98%) among males and 0.50% (95% CI, 0.49%-0.51%) among females. When a male was associated with risk in the family, ASD was diagnosed in 4.2% (95% CI, 3.8%-4.7%) of female siblings and 12.9% (95% CI, 12.2%-13.6%) of male siblings. When a female was associated with risk in the family, ASD was diagnosed in 7.6% (95% CI, 6.5%-8.9%) of female siblings and 16.7% (95% CI, 15.2%-18.4%) of male siblings. Conclusions and Relevance: These findings are in agreement with the higher rates of ASD observed among males than among females in the general population. Our study provides more specific guidance for the screening and counseling of families and may help inform future investigations into the environmental and genetic factors that confer risk of ASD.


Assuntos
Transtorno do Espectro Autista/etiologia , Irmãos , Adolescente , Transtorno do Espectro Autista/epidemiologia , Criança , Pré-Escolar , Bases de Dados Factuais , Feminino , Humanos , Masculino , Estudos Retrospectivos , Fatores de Risco , Fatores Sexuais , Estados Unidos/epidemiologia
17.
PLoS One ; 12(4): e0172187, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28388645

RESUMO

We are fortunate to be living in an era of twin biomedical data surges: a burgeoning representation of human phenotypes in the medical records of our healthcare systems, and high-throughput sequencing making rapid technological advances. The difficulty representing genomic data and its annotations has almost by itself led to the recognition of a biomedical "Big Data" challenge, and the complexity of healthcare data only compounds the problem to the point that coherent representation of both systems on the same platform seems insuperably difficult. We investigated the capability for complex, integrative genomic and clinical queries to be supported in the Informatics for Integrating Biology and the Bedside (i2b2) translational software package. Three different data integration approaches were developed: The first is based on Sequence Ontology, the second is based on the tranSMART engine, and the third on CouchDB. These novel methods for representing and querying complex genomic and clinical data on the i2b2 platform are available today for advancing precision medicine.


Assuntos
Genômica , Software , Integração de Sistemas , Humanos , Polimorfismo de Nucleotídeo Único , Linguagens de Programação
18.
J Biomed Inform ; 63: 366-378, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27522000

RESUMO

We propose a model-driven methodology aimed to shed light on complex disorders. Our approach enables exploring shared etiologies of comorbid diseases at the molecular pathway level. The method, Comparative Comorbidities Simulation (CCS), uses stochastic Petri net simulation for examining the phenotypic effects of perturbation of a network known to be involved in comorbidities to predict new roles for mutations in comorbid conditions. To demonstrate the utility of our novel methodology, we investigated the molecular convergence of autism spectrum disorder (ASD) and inflammatory bowel disease (IBD) on the autophagy pathway. In addition to validation by domain experts, we used formal analyses to demonstrate the model's self-consistency. We then used CCS to compare the effects of loss of function (LoF) mutations previously implicated in either ASD or IBD on the autophagy pathway. CCS identified similar dynamic consequences of these mutations in the autophagy pathway. Our method suggests that two LoF mutations previously implicated in IBD may contribute to ASD, and one ASD-implicated LoF mutation may play a role in IBD. Future targeted genomic or functional studies could be designed to directly test these predictions.


Assuntos
Transtorno do Espectro Autista/complicações , Doenças Inflamatórias Intestinais/complicações , Mutação , Transtorno do Espectro Autista/genética , Autofagia/genética , Comorbidade , Humanos , Doenças Inflamatórias Intestinais/genética , Fenótipo
19.
Cell ; 163(5): 1204-1213, 2015 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-26582133

RESUMO

Duchenne muscular dystrophy (DMD), caused by mutations at the dystrophin gene, is the most common form of muscular dystrophy. There is no cure for DMD and current therapeutic approaches to restore dystrophin expression are only partially effective. The absence of dystrophin in muscle results in dysregulation of signaling pathways, which could be targets for disease therapy and drug discovery. Previously, we identified two exceptional Golden Retriever muscular dystrophy (GRMD) dogs that are mildly affected, have functional muscle, and normal lifespan despite the complete absence of dystrophin. Now, our data on linkage, whole-genome sequencing, and transcriptome analyses of these dogs compared to severely affected GRMD and control animals reveals that increased expression of Jagged1 gene, a known regulator of the Notch signaling pathway, is a hallmark of the mild phenotype. Functional analyses demonstrate that Jagged1 overexpression ameliorates the dystrophic phenotype, suggesting that Jagged1 may represent a target for DMD therapy in a dystrophin-independent manner. PAPERCLIP.


Assuntos
Proteínas de Ligação ao Cálcio/genética , Modelos Animais de Doenças , Peptídeos e Proteínas de Sinalização Intercelular/genética , Proteínas de Membrana/genética , Distrofia Muscular de Duchenne/genética , Animais , Proliferação de Células , Doenças do Cão/genética , Cães , Distrofina/deficiência , Distrofina/genética , Feminino , Estudo de Associação Genômica Ampla , Proteína Jagged-1 , Masculino , Camundongos , Distrofia Muscular Animal/genética , Linhagem , Penetrância , Proteínas Serrate-Jagged , Transcriptoma , Peixe-Zebra , Proteínas de Peixe-Zebra
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...