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1.
BMC Public Health ; 22(1): 1728, 2022 09 12.
Artigo em Inglês | MEDLINE | ID: mdl-36096758

RESUMO

BACKGROUND: Adolescent men who have sex with men (aMSM) and transgender women (aTGW) are affected disproportionately by human immunodeficiency virus (HIV) infection. Although new methods of pre-exposure prophylaxis (PrEP), such as long-acting injectable (LAI-PrEP), have been approved by the Food and Drug Administration, their acceptability among aMSM/aTGW is not well known. METHODS: Forty-eight semi-structured interviews were conducted to assess the knowledge and interest in LAI-PrEP among aMSM/aTGW enrolled in a daily oral PrEP cohort from two capital cities of Brazil since 2019. RESULTS: Previous knowledge of LAI-PrEP remains scarce, but the high interest regarding its use has been reported. Interest in the use of LAI-PrEP is associated with eliminating the burden of daily responsibility or the risk of missing the necessary medications, lowering the costs of this method, increasing confidentiality, and decreasing the frequency of visiting PrEP clinics. The reported barriers to uptake included fear of injection, doubts on its effectiveness, side effects, and greater dependence on a health provider. CONCLUSIONS: There is an urgent need to strengthen the preventive strategies against HIV infection among the youth, enhance their knowledge and those of healthcare providers, and offer safe and new options.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , Profilaxia Pré-Exposição , Minorias Sexuais e de Gênero , Pessoas Transgênero , Adolescente , Fármacos Anti-HIV/uso terapêutico , Brasil , Cidades , Feminino , Infecções por HIV/prevenção & controle , Homossexualidade Masculina , Humanos , Masculino , Aceitação pelo Paciente de Cuidados de Saúde
2.
Int J Mol Sci ; 23(15)2022 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-35955863

RESUMO

Advances in research have boosted therapy development for congenital disorders of glycosylation (CDG), a group of rare genetic disorders affecting protein and lipid glycosylation and glycosylphosphatidylinositol anchor biosynthesis. The (re)use of known drugs for novel medical purposes, known as drug repositioning, is growing for both common and rare disorders. The latest innovation concerns the rational search for repositioned molecules which also benefits from artificial intelligence (AI). Compared to traditional methods, drug repositioning accelerates the overall drug discovery process while saving costs. This is particularly valuable for rare diseases. AI tools have proven their worth in diagnosis, in disease classification and characterization, and ultimately in therapy discovery in rare diseases. The availability of biomarkers and reliable disease models is critical for research and development of new drugs, especially for rare and heterogeneous diseases such as CDG. This work reviews the literature related to repositioned drugs for CDG, discovered by serendipity or through a systemic approach. Recent advances in biomarkers and disease models are also outlined as well as stakeholders' views on AI for therapy discovery in CDG.


Assuntos
Defeitos Congênitos da Glicosilação , Inteligência Artificial , Biomarcadores , Defeitos Congênitos da Glicosilação/genética , Reposicionamento de Medicamentos , Humanos , Doenças Raras
3.
J Inherit Metab Dis ; 44(1): 148-163, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32681750

RESUMO

Phosphoglucomutase 1 (PGM1) deficiency is a rare genetic disorder that affects glycogen metabolism, glycolysis, and protein glycosylation. Previously known as GSD XIV, it was recently reclassified as a congenital disorder of glycosylation, PGM1-CDG. PGM1-CDG usually manifests as a multisystem disease. Most patients present as infants with cleft palate, liver function abnormalities and hypoglycemia, but some patients present in adulthood with isolated muscle involvement. Some patients develop life-threatening cardiomyopathy. Unlike most other CDG, PGM1-CDG has an effective treatment option, d-galactose, which has been shown to improve many of the patients' symptoms. Therefore, early diagnosis and initiation of treatment for PGM1-CDG patients are crucial decisions. In this article, our group of international experts suggests diagnostic, follow-up, and management guidelines for PGM1-CDG. These guidelines are based on the best available evidence-based data and experts' opinions aiming to provide a practical resource for health care providers to facilitate successful diagnosis and optimal management of PGM1-CDG patients.


Assuntos
Gerenciamento Clínico , Galactose/uso terapêutico , Doença de Depósito de Glicogênio/diagnóstico , Doença de Depósito de Glicogênio/tratamento farmacológico , Adulto , Cardiomiopatias/complicações , Cardiomiopatias/patologia , Fissura Palatina/complicações , Fissura Palatina/patologia , Consenso , Doença de Depósito de Glicogênio/complicações , Doença de Depósito de Glicogênio/enzimologia , Humanos , Hipoglicemia/complicações , Lactente , Cooperação Internacional , Doenças Musculares/complicações , Doenças Musculares/patologia
4.
J Inherit Metab Dis ; 42(1): 5-28, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30740725

RESUMO

Phosphomannomutase 2 (PMM2-CDG) is the most common congenital disorder of N-glycosylation and is caused by a deficient PMM2 activity. The clinical presentation and the onset of PMM2-CDG vary among affected individuals ranging from a severe antenatal presentation with multisystem involvement to mild adulthood presentation limited to minor neurological involvement. Management of affected patients requires a multidisciplinary approach. In this article, a systematic review of the literature on PMM2-CDG was conducted by a group of international experts in different aspects of CDG. Our managment guidelines were initiated based on the available evidence-based data and experts' opinions. This guideline mainly addresses the clinical evaluation of each system/organ involved in PMM2-CDG, and the recommended management approach. It is the first systematic review of current practices in PMM2-CDG and the first guidelines aiming at establishing a practical approach to the recognition, diagnosis and management of PMM2-CDG patients.


Assuntos
Defeitos Congênitos da Glicosilação/diagnóstico , Defeitos Congênitos da Glicosilação/tratamento farmacológico , Fosfotransferases (Fosfomutases)/deficiência , Seguimentos , Glicosilação , Humanos
5.
Int J Mol Sci ; 19(5)2018 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-29702557

RESUMO

Congenital disorders of glycosylation (CDG) are a group of genetic disorders that affect protein and lipid glycosylation and glycosylphosphatidylinositol synthesis. More than 100 different disorders have been reported and the number is rapidly increasing. Since glycosylation is an essential post-translational process, patients present a large range of symptoms and variable phenotypes, from very mild to extremely severe. Only for few CDG, potentially curative therapies are being used, including dietary supplementation (e.g., galactose for PGM1-CDG, fucose for SLC35C1-CDG, Mn2+ for TMEM165-CDG or mannose for MPI-CDG) and organ transplantation (e.g., liver for MPI-CDG and heart for DOLK-CDG). However, for the majority of patients, only symptomatic and preventive treatments are in use. This constitutes a burden for patients, care-givers and ultimately the healthcare system. Innovative diagnostic approaches, in vitro and in vivo models and novel biomarkers have been developed that can lead to novel therapeutic avenues aiming to ameliorate the patients’ symptoms and lives. This review summarizes the advances in therapeutic approaches for CDG.


Assuntos
Defeitos Congênitos da Glicosilação/diagnóstico , Defeitos Congênitos da Glicosilação/genética , Defeitos Congênitos da Glicosilação/terapia , Suplementos Nutricionais , Terapia Genética , Transplante de Órgãos , Animais , Biomarcadores , Ensaios Clínicos como Assunto , Modelos Animais de Doenças , Fucose/uso terapêutico , Galactose/uso terapêutico , Glicosilação , Humanos , Manose/uso terapêutico
6.
Hum Mutat ; 38(2): 160-168, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27774737

RESUMO

The congenital disorder of glycosylation (CDG) due to phosphomannomutase 2 deficiency (PMM2-CDG), the most common N-glycosylation disorder, is a multisystem disease for which no effective treatment is available. The recent functional characterization of disease-causing mutations described in patients with PMM2-CDG led to the idea of a therapeutic strategy involving pharmacological chaperones (PC) to rescue PMM2 loss-of-function mutations. The present work describes the high-throughput screening, by differential scanning fluorimetry, of 10,000 low-molecular-weight compounds from a commercial library, to search for possible PCs for the enzyme PMM2. This exercise identified eight compounds that increased the thermal stability of PMM2. Of these, four compounds functioned as potential PCs that significantly increased the stability of several destabilizing and oligomerization mutants and also increased PMM activity in a disease model of cells overexpressing PMM2 mutations. Structural analysis revealed one of these compounds to provide an excellent starting point for chemical optimization since it passed tests based on a number of pharmacochemical quality filters. The present results provide the first proof-of-concept of a possible treatment for PMM2-CDG and describe a promising chemical structure as a starting point for the development of new therapeutic agents for this severe orphan disease.


Assuntos
Defeitos Congênitos da Glicosilação/genética , Fosfotransferases (Fosfomutases)/genética , Alelos , Defeitos Congênitos da Glicosilação/tratamento farmacológico , Descoberta de Drogas , Ativação Enzimática , Fibroblastos/metabolismo , Genótipo , Ensaios de Triagem em Larga Escala , Humanos , Mutação com Perda de Função , Terapia de Alvo Molecular , Mutação , Fosfotransferases (Fosfomutases)/química , Fosfotransferases (Fosfomutases)/isolamento & purificação , Estabilidade Proteica , Proteólise , Proteínas Recombinantes de Fusão/química , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/isolamento & purificação , Proteínas Recombinantes de Fusão/metabolismo , Bibliotecas de Moléculas Pequenas , Relação Estrutura-Atividade
7.
Hum Mutat ; 36(9): 851-60, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26014514

RESUMO

Congenital disorder of glycosylation type Ia (PMM2-CDG), the most common form of CDG, is caused by mutations in the PMM2 gene that reduce phosphomannomutase 2 (PMM2) activity. No curative treatment is available. The present work describes the functional analysis of nine human PMM2 mutant proteins frequently found in PMM2-CDG patients and also two murine Pmm2 mutations carried by the unique PMM2-CDG mouse model described to overcome embryonic lethality. The effects of the mutations on PMM2/Pmm2 stability, oligomerization, and enzyme activity were explored in an optimized bacterial system. The mutant proteins were associated with an enzymatic activity of up to 47.3% as compared with wild type (WT). Stability analysis performed using differential scanning fluorimetry and a bacterial transcription-translation-coupled system allowed the identification of several destabilizing mutations (p.V44A, p.D65Y, p.R123Q, p.R141H, p.R162W, p.F207S, p.T237M, p.C241S). Exclusion chromatography identified one mutation, p.P113L, that affected dimer interaction. Expression analysis of the p.V44A, p.D65Y, p.R162W, and p.T237M mutations in a eukaryotic expression system under permissive folding conditions showed the possibility of recovering their associated PMM2 activity. Together, the results suggest that some loss-of-function mutations detected in PMM2-CDG patients could be destabilizing, and therefore PMM2 activity could be, in certain cases, rescuable via the use of synergetic proteostasis modulators and/or chaperones.


Assuntos
Defeitos Congênitos da Glicosilação/genética , Defeitos Congênitos da Glicosilação/metabolismo , Mutação , Fosfotransferases (Fosfomutases)/genética , Fosfotransferases (Fosfomutases)/metabolismo , Dobramento de Proteína , Animais , Ativação Enzimática/genética , Estabilidade Enzimática/genética , Fibroblastos , Expressão Gênica , Humanos , Camundongos , Fosfotransferases (Fosfomutases)/química , Multimerização Proteica , Proteólise , Proteínas Recombinantes de Fusão/química , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/metabolismo
8.
Hum Mol Genet ; 22(18): 3680-9, 2013 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-23674520

RESUMO

Methylmalonic aciduria (MMA) cblB type is caused by mutations in the MMAB gene. This encodes the enzyme ATP:cob(I)alamin adenosyltransferase (ATR), which converts reduced cob(I)alamin to an active adenosylcobalamin cofactor. We recently reported the presence of destabilizing pathogenic mutations that retain some residual ATR activity. The aim of the present study was to seek pharmacological chaperones as a tailored therapy for stabilizing the ATR protein. High-throughput ligand screening of over 2000 compounds was performed; six were found to enhance the thermal stability of purified recombinant ATR. Further studies using a well-established bacterial system in which the recombinant ATR protein was expressed in the presence of these six compounds, showed them all to increase the stability of the wild-type ATR and the p.Ile96Thr mutant proteins. Compound V (N-{[(4-chlorophenyl)carbamothioyl]amino}-2-phenylacetamide) significantly increased this stability and did not act as an inhibitor of the purified protein. Importantly, compound V increased the activity of ATR in patient-derived fibroblasts harboring the destabilizing p.Ile96Thr mutation in a hemizygous state to within control range. When cobalamin was coadministrated with compound V, mutant ATR activity further improved. Oral administration of low doses of compound V to C57BL/6J mice for 12 days, led to increase in steady-state levels of ATR protein in liver and brain (disease-relevant organs). These results hold promise for the clinical use of pharmacological chaperones in MMA cblB type patients harboring chaperone-responsive mutations.


Assuntos
Alquil e Aril Transferases/genética , Erros Inatos do Metabolismo dos Aminoácidos/tratamento farmacológico , Benzenoacetamidas/química , Benzenoacetamidas/farmacologia , Tioureia/análogos & derivados , Alquil e Aril Transferases/química , Alquil e Aril Transferases/metabolismo , Erros Inatos do Metabolismo dos Aminoácidos/metabolismo , Animais , Benzenoacetamidas/administração & dosagem , Sítios de Ligação , Encéfalo/efeitos dos fármacos , Encéfalo/enzimologia , Estabilidade Enzimática , Feminino , Ensaios de Triagem em Larga Escala , Humanos , Fígado/efeitos dos fármacos , Fígado/enzimologia , Camundongos , Camundongos Endogâmicos C57BL , Simulação de Acoplamento Molecular , Proteínas Mutantes/genética , Proteínas Mutantes/metabolismo , Tioureia/administração & dosagem , Tioureia/química , Tioureia/farmacologia , Vitamina B 12/administração & dosagem , Vitamina B 12/farmacologia
9.
Cad Saude Publica ; 40(4): e00066423, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38775571

RESUMO

This study aimed to analyze the challenges in demand creation for participation in an HIV pre-exposure prophylaxis (PrEP) project in two Brazilian capitals. This qualitative study was conducted with men who have sex with men and transgender women aged 15 to 19 years who lived in two Brazilian state capitals. For this analysis, 27 semi-structured interviews carried out from 2019 to 2020 were evaluated by reflexive thematic content analysis. For participants, PrEP demand creation was essential for their interaction, mediation, bonding, and attachment and proved effective for PrEP acceptability and adherence. Adolescents' narratives showed that the strategies promoted HIV combination prevention, opened up opportunities for recruitment meetings, helped to negotiate with and convince individuals to use PrEP, strengthened peer education, and evoked a feeling of "being with" and "walking together" despite the challenges. Face-to-face or online interactions using social technologies played a crucial role in recruiting adolescents for the project, expanding knowledge on PrEP and other combination prevention strategies and access to health services and self-care.


Assuntos
Infecções por HIV , Homossexualidade Masculina , Profilaxia Pré-Exposição , Pesquisa Qualitativa , Pessoas Transgênero , Humanos , Masculino , Adolescente , Brasil , Infecções por HIV/prevenção & controle , Pessoas Transgênero/psicologia , Adulto Jovem , Homossexualidade Masculina/psicologia , Feminino , Entrevistas como Assunto
10.
Cad Saude Publica ; 39Suppl 1(Suppl 1): e00201621, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36995869

RESUMO

This paper analyzed the genesis of the PrEP1519 study and feasibility conditions for its construction. A qualitative-approach study was conducted using the Bourdieusian sociology framework to reconstruct the dynamics of the social environment where PrEP1519 emerged during 2015-2018. A document analysis and ten in-depth interviews were carried out to analyze the trajectory of the project. Pre-exposure prophylaxis (PrEP) was introduced in Brazil as a public policy in 2017. The lack of scientific evidence available among the adolescent population led to the development of a demonstrative cohort study, associated with an intervention, aimed at combining the prevention and treatment of sexually transmitted infections at three sites in Brazil. PrEP1519 sought to generate evidence for global use and to help the Brazilian Ministry of Health apply PrEP among adolescents. The articulation of bureaucratic, scientific, and activist stakeholders enabled this study. The feasibility conditions for developing PrEP1519 included a favorable relationship of national organizations with international organizations, the favorable approach that public administrators had at the time towards new technologies and prevention strategies, the researchers' previous experience in studies with the target population or with PrEP, articulation efforts with social movements, civil society organizations, and other public agencies, and the integration between scientific institutions, which allowed using international resources and developing a response to the problem. Completing this study at a moment when conservatism advances in Brazil demands that the scientific community and activists closely monitor and take stances on PrEP to ensure its availability for adolescents as a public policy.


Assuntos
Síndrome da Imunodeficiência Adquirida , Fármacos Anti-HIV , Infecções por HIV , Infecções Sexualmente Transmissíveis , Adolescente , Humanos , Infecções por HIV/tratamento farmacológico , Estudos de Coortes , Brasil/epidemiologia , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Infecções Sexualmente Transmissíveis/epidemiologia , Fármacos Anti-HIV/uso terapêutico
11.
Orphanet J Rare Dis ; 18(1): 329, 2023 10 19.
Artigo em Inglês | MEDLINE | ID: mdl-37858231

RESUMO

Congenital disorders of glycosylation (CDG) are a complex and heterogeneous family of rare metabolic diseases. With a clinical history that dates back over 40 years, it was the recent multi-omics advances that mainly contributed to the fast-paced and encouraging developments in the field. However, much remains to be understood, with targeted therapies' discovery and approval being the most urgent unmet need. In this paper, we present the 2022 state of the art of CDG, including glycosylation pathways, phenotypes, genotypes, inheritance patterns, biomarkers, disease models, and treatments. In light of our current knowledge, it is not always clear whether a specific disease should be classified as a CDG. This can create ambiguity among professionals leading to confusion and misguidance, consequently affecting the patients and their families. This review aims to provide the CDG community with a comprehensive overview of the recent progress made in this field.


Assuntos
Defeitos Congênitos da Glicosilação , Humanos , Defeitos Congênitos da Glicosilação/genética , Defeitos Congênitos da Glicosilação/metabolismo , Glicosilação , Biomarcadores/metabolismo , Fenótipo , Genótipo
12.
Cad Saude Publica ; 39Suppl 1(Suppl 1): e00134421, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36995863

RESUMO

Studies indicate gaps in knowledge about the barriers to access and adhere to HIV pre-exposure prophylaxis (PrEP) in adolescents. In this article, we explore the perceptions and experiences of young gay, bisexual, and other men who have sex with men (YGBMSM) of the search, use and adherence to PrEP, considering their positions according to social markers of difference such as race/skin color, gender, sexuality, and social status. Intersectionality provides theoretical and methodological tools to interpret how the interlinking of these social markers of difference constitutes barriers and facilitators in the PrEP care continuum. The analyzed material is part of the PrEP1519 study and is comprised of 35 semi-structured interviews with YGBMSM from two Brazilian capitals (Salvador and São Paulo). The analyses suggest connections between social markers of difference, sexual cultures, and the social meanings of PrEP. Subjective, relational and symbolic aspects permeate the awareness of PrEP in the range of prevention tools. Willingness to use and adhere to PrEP is part of a learning process, production of meaning, and negotiation in the face of getting HIV and other sexually transmittable infections and the possibilities of pleasure. Thus, accessing and using PrEP makes several adolescents more informed about their vulnerabilities, leading to more informed decision-making. Interlinking the PrEP continuum of care among YGBMSM with the intersections of the social markers of difference may provide a conceptual framework to problematize the conditions and effects of implementing this prevention strategy, which could bring advantages to HIV prevention programs.


Assuntos
Infecções por HIV , Minorias Sexuais e de Gênero , Masculino , Humanos , Adolescente , Homossexualidade Masculina , Enquadramento Interseccional , Infecções por HIV/prevenção & controle , Infecções por HIV/tratamento farmacológico , Brasil , Percepção
13.
Cad Saude Publica ; 39Suppl 1(Suppl 1): e00139221, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36995864

RESUMO

This study offers a set of reflections on the relationship between risk and pleasure in the field of HIV prevention and care, as it mediates new biomedical prevention/care technologies, particularly pre-exposure prophylaxis (PrEP), among men who have sex with men (MSM). We begin by investigating some studies about condomless sex between men, more specifically barebacking and PrEP use among young MSM. We base our analysis on the assumption that PrEP, as one of these new actants, has reconfigured the field of HIV prevention/care, especially in relation to the dimensions of risk and pleasure, with the potential to considerably reduce the chances of HIV infection while enabling maximum pleasure and a sense of greater safety and freedom. Despite this progress, we also problematize some of the ambivalences, tensions, and moral conflicts that still exist in the field of prevention, especially the potential for condomless sex. Finally, taking a praxiographic perspective on health care and foregrounding the situated practices of human and non-human actors/actants in interaction, we consider HIV/AIDS prevention as a more fluid, non-linear, erratic phenomenon that involves multiple types of knowledge, feelings, and participations, and is open to different kinds of experimentation. Besides a "logic of choice", we hold that health care is a permeable, continuous process that is enacted in situated practices and may produce different effects in response to a heterogeneous network of interactions.


Assuntos
Síndrome da Imunodeficiência Adquirida , Fármacos Anti-HIV , Infecções por HIV , Minorias Sexuais e de Gênero , Masculino , Humanos , Infecções por HIV/prevenção & controle , Infecções por HIV/tratamento farmacológico , Homossexualidade Masculina , Comportamento Sexual , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico , Prazer , Fármacos Anti-HIV/uso terapêutico , Brasil
14.
Cad Saude Publica ; 39Suppl 1(Suppl 1): e00176821, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36995868

RESUMO

Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others' care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant's needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users' specific characteristics and lived experiences.


Assuntos
Síndrome da Imunodeficiência Adquirida , Fármacos Anti-HIV , Infecções por HIV , Minorias Sexuais e de Gênero , Pessoas Transgênero , Masculino , Humanos , Adolescente , Feminino , Adulto Jovem , Adulto , Homossexualidade Masculina/psicologia , Infecções por HIV/prevenção & controle , Infecções por HIV/tratamento farmacológico , Pessoas Transgênero/psicologia , Fármacos Anti-HIV/uso terapêutico , Brasil , Síndrome da Imunodeficiência Adquirida/tratamento farmacológico
15.
Orphanet J Rare Dis ; 17(1): 303, 2022 07 30.
Artigo em Inglês | MEDLINE | ID: mdl-35907899

RESUMO

BACKGROUND: Congenital disorders of glycosylation (CDG) are a large family of rare genetic diseases for which therapies are virtually nonexistent. However, CDG therapeutic research has been expanding, thanks to the continuous efforts of the CDG medical/scientific and patient communities. Hence, CDG drug development is a popular research topic. The main aim of this study was to understand current and steer future CDG drug development and approval by collecting and analysing the views and experiences of the CDG community, encompassing professionals and families. An electronic (e-)survey was developed and distributed to achieve this goal. RESULTS: A total of 128 respondents (46 CDG professionals and 82 family members), mainly from Europe and the USA, participated in this study. Most professionals (95.0%) were relatively familiar with drug development and approval processes, while CDG families revealed low familiarity levels, with 8.5% admitting to never having heard about drug development. However, both stakeholder groups agreed that patients and families make significant contributions to drug development and approval. Regarding their perceptions of and experiences with specific drug development and approval tools, namely biobanks, disease models, patient registries, natural history studies (NHS) and clinical trials (CT), the CDG community stakeholders described low use and participation, as well as variable familiarity. Additionally, CDG professionals and families shared conflicting views about CT patient engagement and related information sharing. Families reported lower levels of involvement in CT design (25.0% declared ever being involved) and information (60.0% stated having been informed) compared to professionals (60.0% and 85.7%, respectively). These contrasting perceptions were further extended to their insights and experiences with patient-centric research. Finally, the CDG community (67.4% of professionals and 54.0% of families) reported a positive vision of artificial intelligence (AI) as a drug development tool. Nevertheless, despite the high AI awareness among CDG families (76.8%), professionals described limited AI use in their research (23.9%). CONCLUSIONS: This community-centric study sheds new light on CDG drug development and approval. It identifies educational, communication and research gaps and opportunities for CDG professionals and families that could improve and accelerate CDG therapy development.


Assuntos
Defeitos Congênitos da Glicosilação , Inteligência Artificial , Defeitos Congênitos da Glicosilação/tratamento farmacológico , Defeitos Congênitos da Glicosilação/genética , Família , Glicosilação , Humanos , Participação do Paciente
16.
Orphanet J Rare Dis ; 17(1): 134, 2022 03 24.
Artigo em Inglês | MEDLINE | ID: mdl-35331276

RESUMO

BACKGROUND: Congenital Disorders of Glycosylation (CDG) are a complex family of rare metabolic diseases. Robust clinical data collection faces many hurdles, preventing full CDG biological and clinical comprehension. Web-based platforms offer privileged opportunities for biomedical data gathering, and participant recruitment, particularly in rare diseases. The immunology and CDG electronic (e-) questionnaire (ImmunoCDGQ) explores this paradigm, proposing a people-centric framework to advance health research and participant empowerment. OBJECTIVE: The objectives of this study were to: (1) Describe and characterize the ImmunoCDGQ development, engagement, recruitment, participation, and result dissemination strategies; (2) To critically compare this framework with published literature and making recommendations. METHODS: An international, multistakeholder people-centric approach was initiated to develop and distribute the ImmunoCDGQ, a multi-lingual e-questionnaire able to collect immune-related data directly from patients and family caregivers. An adapted version was produced and distributed among the general "healthy" population (ImmunoHealthyQ), serving as the control group. Literature screening was performed to identify and analyze comparable studies. RESULTS: The ImmunoCDGQ attained high participation and inclusion rates (94.6%, 209 out of 221). Comparatively to the control, CDG participants also showed higher and more variable questionnaire completion times as well as increased English version representativeness. Additionally, 20% of the CDG group (42 out of 209) chose not to complete the entire questionnaire in one go. Conditional logic structuring guided participant data provision and accurate data analysis assignment. Multi-channel recruitment created sustained engagement with Facebook emerging as the most followed social media outlet. Still, most included ImmunoCDGQ questionnaires (50.7%, 106 out of 209) were submitted within the first month of the project's launch. Literature search and analysis showed that most e-questionnaire-based studies in rare diseases are author-built (56.8%, 25 out of 44), simultaneously addressing medical and health-related quality of life (HRQoL) and/or information needs (79.5%, 35 out of 44). Also, over 68% of the studies adopt multi-platform recruitment (30 out of 44) actively supported by patient organizations (52.3%, 23 out of 44). CONCLUSIONS: The ImmunoCDGQ, its methodology and the CDG Community served as models for health research, hence paving a successful and reproducible road to people-centricity in biomedical research.


Assuntos
Defeitos Congênitos da Glicosilação , Mídias Sociais , Humanos , Qualidade de Vida , Doenças Raras , Inquéritos e Questionários
17.
Artigo em Inglês | MEDLINE | ID: mdl-36294089

RESUMO

BACKGROUND: Clinical management guidelines (CMGs) are decision support tools for patient care used by professionals, patients, and family caregivers. Since clinical experts develop numerous CMGs, their technical language hinders comprehension and access by nonmedical stakeholders. Additionally, the views of affected individuals and their families are often not incorporated into treatment guidelines. We developed an adequate methodology for addressing the needs and preferences of family and professional stakeholders regarding CMGs, a recently developed protocol for managing congenital disorders of glycosylation (CDG), a family of rare metabolic diseases. We used the CDG community and phosphomannomutase 2 (PMM2)-CDG CMGs as a pilot to test and implement our methodology. RESULTS: We listened to 89 PMM2-CDG families and 35 professional stakeholders and quantified their CMG-related needs and preferences through an electronic questionnaire. Most families and professionals rated CMGs as relevant (86.5% and 94.3%, respectively), and valuable (84.3% and 94.3%, respectively) in CDG management. The most identified challenges were the lack of CMG awareness (50.6% of families) and the lack of plain language CMG (39.3% of professionals). Concordantly, among families, the most suggested solution was involving them in CMG development (55.1%), while professionals proposed adapting CMGs to include plain language (71.4%). Based on these results, a participatory framework built upon health literacy principles was created to improve CMG comprehension and accessibility. The outputs are six complementary CMG-related resources differentially adapted to the CDG community's needs and preferences, with a plain language PMM2-CDG CMG as the primary outcome. Additionally, the participants established a distribution plan to ensure wider access to all resources. CONCLUSIONS: This empowering, people-centric methodology accelerates CMG development and accessibility to all stakeholders, ultimately improving the quality of life of individuals living with a specific condition and raising the possibility of application to other clinical guidelines.


Assuntos
Defeitos Congênitos da Glicosilação , Idioma , Humanos , Defeitos Congênitos da Glicosilação/tratamento farmacológico , Defeitos Congênitos da Glicosilação/metabolismo , Qualidade de Vida
18.
Artigo em Inglês | MEDLINE | ID: mdl-35682409

RESUMO

Congenital Disorders of Glycosylation (CDG) are a large family of rare genetic diseases for which effective therapies are almost nonexistent. To better understand the reasons behind this, to analyze ongoing therapy research and development (R&D) for CDG, and to provide future guidance, a community-led mixed methods approach was organized during the 4th World Conference on CDG for Families and Professionals. In the quantitative phase, electronic surveys pointed to the prioritization of six therapeutic R&D tools, namely biobanks, registries, biomarkers, disease models, natural history studies, and clinical trials. Subsequently, in the qualitative phase, the challenges and solutions associated with these research tools were explored through community-driven think tanks. The multiple challenges and solutions identified administrative/regulatory, communication, financial, technical, and biological issues, which are directly related to three fundamental aspects of therapy R&D, namely data, sample, and patient management. An interdependence was traced between the prioritized tools, with diagnosis and therapies acting as bidirectional triggers that fuel these interrelationships. In conclusion, this study's pioneering and adaptable community-led methodology identified several CDG therapy R&D gaps, many common to other rare diseases, without easy solutions. However, the strong proactive attitude towards research, based on inclusive and international partnerships and involving all members of the CDG community, sets the direction for better future therapy R&D.


Assuntos
Defeitos Congênitos da Glicosilação , Biomarcadores , Defeitos Congênitos da Glicosilação/diagnóstico , Defeitos Congênitos da Glicosilação/genética , Defeitos Congênitos da Glicosilação/terapia , Glicosilação , Humanos , Inquéritos e Questionários
19.
Hum Mutat ; 32(9): 1019-27, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21542064

RESUMO

Antisense oligonucleotide therapy to modulate splicing mutations in inherited diseases is emerging as a treatment option also for metabolic defects. In this article, we report the effect of cellular antisense therapy to suppress pseudoexon activation in primary dermal fibroblasts from patients with mutations in the PTS gene encoding 6-pyruvoyltetrahydropterin synthase (PTPS), which leads to tetrahydrobiopterin and monoamine neurotransmitter deficiency. Pathogenic inclusion of SINE or LINE-derived cryptic exons in different PTPS patients due to the intronic mutations c.84-322A>T, c.163 + 695_163 + 751del57, or c.164-712A>T was demonstrated by transcript analysis in fibroblasts and minigene ex vivo assays. Antisense morpholino oligonucleotides (AMOs) directed to the pseudoexons 3' or 5' splice sites were designed with the aim of preventing the pathological pseudoexon inclusion. At the time of AMO transfection, we investigated patients' cells for correct PTS-mRNA splicing and functional recovery of the PTPS protein. Transcriptional profiling after 24 hr posttransfection revealed a dose- and sequence-specific recovery of normal splicing. Furthermore, PTPS enzyme activity in all three patients' fibroblasts and the pterin profile were close to normal values after antisense treatment. Our results demonstrate proof-of-concept for pseudoexon exclusion therapy using AMO in inherited metabolic disease.


Assuntos
Éxons/genética , Oligonucleotídeos Antissenso/uso terapêutico , Fenilcetonúrias/tratamento farmacológico , Fósforo-Oxigênio Liases/deficiência , Elementos Alu/genética , Sequência de Bases , Biopterinas/metabolismo , Células Cultivadas , Fibroblastos/metabolismo , Fibroblastos/patologia , Humanos , Íntrons/genética , Dados de Sequência Molecular , Neopterina/metabolismo , Fenilcetonúrias/enzimologia , Fósforo-Oxigênio Liases/genética , Splicing de RNA , Transcriptoma/genética
20.
Front Mol Biosci ; 8: 648012, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34026829

RESUMO

More than 7,000 rare diseases (RDs) exist worldwide, affecting approximately 350 million people, out of which only 5% have treatment. The development of novel genome sequencing techniques has accelerated the discovery and diagnosis in RDs. However, most patients remain undiagnosed. Epigenetics has emerged as a promise for diagnosis and therapies in common disorders (e.g., cancer) with several epimarkers and epidrugs already approved and used in clinical practice. Hence, it may also become an opportunity to uncover new disease mechanisms and therapeutic targets in RDs. In this "big data" age, the amount of information generated, collected, and managed in (bio)medicine is increasing, leading to the need for its rapid and efficient collection, analysis, and characterization. Artificial intelligence (AI), particularly deep learning, is already being successfully applied to analyze genomic information in basic research, diagnosis, and drug discovery and is gaining momentum in the epigenetic field. The application of deep learning to epigenomic studies in RDs could significantly boost discovery and therapy development. This review aims to collect and summarize the application of AI tools in the epigenomic field of RDs. The lower number of studies found, specific for RDs, indicate that this is a field open to expansion, following the results obtained for other more common disorders.

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