Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 511
Filtrar
1.
BMJ Case Rep ; 17(3)2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38514164

RESUMO

Autosomal recessive congenital ichthyosis is a type of inherited ichthyosis which is a rare cluster of genetic disorders leading to defective keratinisation. The combined prevalence for lamellar ichthyosis and congenital ichthyosiform erythroderma is almost 1 per 200 000-300 000 people. Among all the mutations in this gene, missense and frameshift mutations are most common which account for 80% of the cases. Our patient had a mutation in R-type arachidonate 12-lipoxygenase gene (ALOX12B, OMIM*603741).


Assuntos
Eritrodermia Ictiosiforme Congênita , Ictiose Lamelar , Ictiose , Lactente , Humanos , Ictiose Lamelar/genética , Colódio , Araquidonato 12-Lipoxigenase/genética , Eritrodermia Ictiosiforme Congênita/genética , Mutação , Genes Recessivos
2.
BMC Geriatr ; 24(1): 256, 2024 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-38486200

RESUMO

BACKGROUND: Drug-related problems (DRPs) and potentially inappropriate prescribing (PIP) are associated with adverse patient and health care outcomes. In the setting of hospitalized older patients, Clinical Decision Support Systems (CDSSs) could reduce PIP and therefore improve clinical outcomes. However, prior research showed a low proportion of adherence to CDSS recommendations by clinicians with possible explanatory factors such as little clinical relevance and alert fatigue. OBJECTIVE: To investigate the use of a CDSS in a real-life setting of hospitalized older patients. We aim to (I) report the natural course and interventions based on the top 20 rule alerts (the 20 most frequently generated alerts per clinical rule) of generated red CDSS alerts (those requiring action) over time from day 1 to 7 of hospitalization; and (II) to explore whether an optimal timing can be defined (in terms of day per rule). METHODS: All hospitalized patients aged ≥ 60 years, admitted to Zuyderland Medical Centre (the Netherlands) were included. The evaluation of the CDSS was investigated using a database used for standard care. Our CDSS was run daily and was evaluated on day 1 to 7 of hospitalization. We collected demographic and clinical data, and moreover the total number of CDSS alerts; the total number of top 20 rule alerts; those that resulted in an action by the pharmacist and the course of outcome of the alerts on days 1 to 7 of hospitalization. RESULTS: In total 3574 unique hospitalized patients, mean age 76.7 (SD 8.3) years and 53% female, were included. From these patients, in total 8073 alerts were generated; with the top 20 of rule alerts we covered roughly 90% of the total. For most rules in the top 20 the highest percentage of resolved alerts lies somewhere between day 4 and 5 of hospitalization, after which there is equalization or a decrease. Although for some rules, there is a gradual increase in resolved alerts until day 7. The level of resolved rule alerts varied between the different clinical rules; varying from > 50-70% (potassium levels, anticoagulation, renal function) to less than 25%. CONCLUSION: This study reports the course of the 20 most frequently generated alerts of a CDSS in a setting of hospitalized older patients. We have shown that for most rules, irrespective of an intervention by the pharmacist, the highest percentage of resolved rules is between day 4 and 5 of hospitalization. The difference in level of resolved alerts between the different rules, could point to more or less clinical relevance and advocates further research to explore ways of optimizing CDSSs by adjustment in timing and number of alerts to prevent alert fatigue.


Assuntos
Sistemas de Apoio a Decisões Clínicas , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Humanos , Feminino , Idoso , Masculino , Bases de Dados Factuais , Hospitalização , Hospitais
3.
JMIR Hum Factors ; 11: e55802, 2024 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-38530337

RESUMO

BACKGROUND: Ventricular tachycardia (VT) diagnosis is challenging due to the similarity between VT and some forms of supraventricular tachycardia, complexity of clinical manifestations, heterogeneity of underlying diseases, and potential for life-threatening hemodynamic instability. Clinical decision support systems (CDSSs) have emerged as promising tools to augment the diagnostic capabilities of cardiologists. However, a requirements analysis is acknowledged to be vital for the success of a CDSS, especially for complex clinical tasks such as VT diagnosis. OBJECTIVE: The aims of this study were to analyze the requirements for a VT diagnosis CDSS within the frameworks of knowledge and practice and to determine the clinical decision support (CDS) needs. METHODS: Our multidisciplinary team first conducted semistructured interviews with seven cardiologists related to the clinical challenges of VT and expected decision support. A questionnaire was designed by the multidisciplinary team based on the results of interviews. The questionnaire was divided into four sections: demographic information, knowledge assessment, practice assessment, and CDS needs. The practice section consisted of two simulated cases for a total score of 10 marks. Online questionnaires were disseminated to registered cardiologists across China from December 2022 to February 2023. The scores for the practice section were summarized as continuous variables, using the mean, median, and range. The knowledge and CDS needs sections were assessed using a 4-point Likert scale without a neutral option. Kruskal-Wallis tests were performed to investigate the relationship between scores and practice years or specialty. RESULTS: Of the 687 cardiologists who completed the questionnaire, 567 responses were eligible for further analysis. The results of the knowledge assessment showed that 383 cardiologists (68%) lacked knowledge in diagnostic evaluation. The overall average score of the practice assessment was 6.11 (SD 0.55); the etiological diagnosis section had the highest overall scores (mean 6.74, SD 1.75), whereas the diagnostic evaluation section had the lowest scores (mean 5.78, SD 1.19). A majority of cardiologists (344/567, 60.7%) reported the need for a CDSS. There was a significant difference in practice competency scores between general cardiologists and arrhythmia specialists (P=.02). CONCLUSIONS: There was a notable deficiency in the knowledge and practice of VT among Chinese cardiologists. Specific knowledge and practice support requirements were identified, which provide a foundation for further development and optimization of a CDSS. Moreover, it is important to consider clinicians' specialization levels and years of practice for effective and personalized support.


Assuntos
Sistemas de Apoio a Decisões Clínicas , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Taquicardia Ventricular , Humanos , Arritmias Cardíacas , Taquicardia Ventricular/diagnóstico , Povo Asiático
4.
Braz J Med Biol Res ; 57: e13192, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38381884

RESUMO

The aim of this study was to explore the association between differential percentages of dendritic cell (DC) subsets in peripheral blood and malignancy (grade and lymph node metastasis) of peritoneal adenocarcinoma patients and the frequencies of dendritic cell subsets in the normal controls. The peripheral blood of 30 patients with peritoneal adenocarcinoma and 12 healthy controls were collected for multicolor flow cytometry analysis. Peritoneal adenocarcinoma patients were grouped according to the malignant degree (grade and lymph node metastasis). Percentages of myeloid DCs (mDCs) and its subsets MDC1 and MDC2 in DCs were lower in peripheral blood of patients with peritoneal adenocarcinoma than in normal controls. The percentages of plasmacytoid dendritic cells (pDCs) and CD16+mDCs in DCs were higher than in normal controls. Compared with poor differentiation grade, patients with well/moderate differentiation grade had an increased percentage of CD16+mDCs. Contrary to CD16+mDCs, the percentage of MDC1 was lower in the well/moderate differentiation grade group. In patients with no lymph node metastasis, pDCs and CD16+mDCs levels were higher compared with patients with lymph node metastasis. mDCs and MDC1 levels had opposite results. pDCs were positively correlated with CD16+mDCs in peripheral blood of peritoneal patients, as was mDCs and MDC1. CD16+mDCs were negatively correlated with MDC1. The percentages of pDCs and CD16+mDCs in DCs were positively correlated with CD3+CD8+T cells, and pDCs also positively correlated with CD8+PD-1+T cells. Our results revealed that DCs subsets correlated with peritoneal adenocarcinoma malignancy. Dendritic cells play an independent role in the immune function of peritoneal adenocarcinoma.


Assuntos
Adenocarcinoma , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Receptor de Morte Celular Programada 1 , Humanos , Metástase Linfática/patologia , Células Dendríticas , Adenocarcinoma/patologia
5.
Clin Biochem ; 125: 110735, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38401771

RESUMO

BACKGROUND: Multiple Acyl-CoA Dehydrogenase Deficiency (MADD), also known as Glutaric Aciduria Type II, is an exceptionally rare autosomal recessive genetic disorder that disrupts the metabolism of fatty acids, amino acids, and choline. It presents with a wide range of clinical manifestations, from severe neonatal-onset forms to milder late-onset cases, with symptoms including metabolic disturbances and muscle weakness. Jordan's anomaly is a distinctive morphological feature found in peripheral blood white cells and is typically associated with Neutral Lipid Storage Disease (NLSD). CASE REPORT: In our case report, the patient initially presented with symptoms of vomiting, abdominal pain, and altered consciousness. The presence of white cell Jordan's anomaly was detected in the blood smear. Subsequent serum tests revealed elevated levels of transaminases, creatine kinase, uric acid, and multiple acylcarnitines, while blood glucose and free carnitine levels were notably reduced. High-throughput sequencing confirmed heterozygous pathogenic variants in the electron-transferring flavoprotein dehydrogenase (ETFDH) gene, leading to the conclusive diagnosis of MADD. Following a three-month treatment regimen involving high-dose vitamin B2, coenzyme Q10, and other supportive interventions, the patient exhibited significant clinical improvement, ultimately resulting in discharge. CONCLUSION: The identification of Jordan's anomaly in a pediatric patient with late-onset MADD sheds light on its broader implications within the realm of lipid storage myopathies. The significance of this finding extends beyond its conventional association with NLSD, challenging the notion of its exclusivity. This novel observation serves as a compelling reminder of the diagnostic significance this morphological abnormality holds, potentially revolutionizing diagnostic practices within the field.


Assuntos
Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Deficiência Múltipla de Acil Coenzima A Desidrogenase , Doenças Musculares , Recém-Nascido , Humanos , Criança , Deficiência Múltipla de Acil Coenzima A Desidrogenase/diagnóstico , Deficiência Múltipla de Acil Coenzima A Desidrogenase/genética , Deficiência Múltipla de Acil Coenzima A Desidrogenase/tratamento farmacológico , Jordânia , Aminoácidos , Lipídeos , Mutação , Acil-CoA Desidrogenase/genética
6.
Lancet ; 403(10425): 439-449, 2024 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-38262430

RESUMO

BACKGROUND: Drug-drug interactions (DDIs) can harm patients admitted to the intensive care unit (ICU). Yet, clinical decision support systems (CDSSs) aimed at helping physicians prevent DDIs are plagued by low-yield alerts, causing alert fatigue and compromising patient safety. The aim of this multicentre study was to evaluate the effect of tailoring potential DDI alerts to the ICU setting on the frequency of administered high-risk drug combinations. METHODS: We implemented a cluster randomised stepped-wedge trial in nine ICUs in the Netherlands. Five ICUs already used potential DDI alerts. Patients aged 18 years or older admitted to the ICU with at least two drugs administered were included. Our intervention was an adapted CDSS, only providing alerts for potential DDIs considered as high risk. The intervention was delivered at the ICU level and targeted physicians. We hypothesised that showing only relevant alerts would improve CDSS effectiveness and lead to a decreased number of administered high-risk drug combinations. The order in which the intervention was implemented in the ICUs was randomised by an independent researcher. The primary outcome was the number of administered high-risk drug combinations per 1000 drug administrations per patient and was assessed in all included patients. This trial was registered in the Netherlands Trial Register (identifier NL6762) on Nov 26, 2018, and is now closed. FINDINGS: In total, 10 423 patients admitted to the ICU between Sept 1, 2018, and Sept 1, 2019, were assessed and 9887 patients were included. The mean number of administered high-risk drug combinations per 1000 drug administrations per patient was 26·2 (SD 53·4) in the intervention group (n=5534), compared with 35·6 (65·0) in the control group (n=4353). Tailoring potential DDI alerts to the ICU led to a 12% decrease (95% CI 5-18%; p=0·0008) in the number of administered high-risk drug combinations per 1000 drug administrations per patient, after adjusting for clustering and prognostic factors. INTERPRETATION: This cluster randomised stepped-wedge trial showed that tailoring potential DDI alerts to the ICU setting significantly reduced the number of administered high-risk drug combinations. Our list of high-risk drug combinations can be used in other ICUs, and our strategy of tailoring alerts based on clinical relevance could be applied to other clinical settings. FUNDING: ZonMw.


Assuntos
Cuidados Críticos , Sistemas de Apoio a Decisões Clínicas , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Humanos , Combinação de Medicamentos , Interações Medicamentosas , Unidades de Terapia Intensiva , Adolescente , Adulto
7.
Neuromuscul Disord ; 35: 19-24, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38194732

RESUMO

The rare disorder known as Neutral Lipid Storage Disease with Myopathy presents with a variety of clinical manifestations, including myopathy, cardiac dysfunction, and other organ complications. Early diagnosis is crucial due to the increased risk of cardiomyopathy. We describe the clinical, histopathological, muscle imaging, and genetic findings of nine neutral lipid storage myopathy patients. Proximal weakness and asymmetric involvement may suggest lipid storage myopathy. While skeletal muscle weakness was the main manifestation in our patients, one case presented only with hyperCKemia. Additionally, three patients had fertility issues, two suffered from diabetes mellitus, two had cardiomyopathy, and one had a history of hypothyroidism. Muscle histopathology revealed lipid depositions and rimmed vacuoles, prompting peripheral blood smears to detect Jordan Anomalies. All muscle biopsies and peripheral blood smear showed lipid droplets, rimmed vacuoles, and Jordan anomaly. Identifying PNPLA2 gene mutations is important for diagnosing neutral lipid storage myopathy; our cases showed some novel mutations. This study highlights the importance of early diagnosis and comprehensive evaluation in managing neutral lipid storage myopathy cases.


Assuntos
Cardiomiopatias , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Humanos , Irã (Geográfico) , Músculo Esquelético/patologia , Lipase/genética , Doenças Musculares/diagnóstico , Doenças Musculares/genética , Doenças Musculares/patologia , Erros Inatos do Metabolismo Lipídico/diagnóstico , Erros Inatos do Metabolismo Lipídico/genética , Erros Inatos do Metabolismo Lipídico/patologia , Cardiomiopatias/diagnóstico , Cardiomiopatias/genética , Cardiomiopatias/patologia , Mutação
8.
Genes (Basel) ; 15(1)2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38254987

RESUMO

Rehmannia chingii is an important medicinal plant with immense value in scientific research. However, its mitochondrial genome (mitogenome) has not yet been characterized. Herein, based on whole-genome Illumina short reads and PacBio HiFi reads, we obtained the complete mitogenome of R. chingii through a de novo assembly strategy. We carried out comparative genomic analyses and found that, in comparison with the plastid genome (plastome) showing a high degree of structural conservation, the R. chingii mitogenome structure is relatively complex, showing an intricate ring structure with 16 connections, owing to five repetitive sequences. The R. chingii mitogenome was 783,161 bp with a GC content of 44.8% and contained 77 genes, comprising 47 protein-coding genes (CDS), 27 tRNA genes, and 3 rRNA genes. We counted 579 RNA editing events in 47 CDS and 12,828 codons in all CDSs of the R. chingii mitogenome. Furthermore, 24 unique sequence transfer fragments were found between the mitogenome and plastome, comprising 8 mitogenome CDS genes and 16 plastome CDS genes, corresponding to 2.39% of the R. chingii mitogenome. Mitogenomes had shorter but more collinear regions, evidenced by a comparison of the organelles of non-parasitic R. chingii, hemiparasitic Pedicularis chinensis, and holoparasitic Aeginetia indica in the Orobanchaceae family. Moreover, from non-parasitic to holoparasitic species, the genome size in the mitogenomes of Orobanchaceae species did not decrease gradually. Instead, the smallest mitogenome was found in the hemiparasitic species P. chinensis, with a size of 225,612 bp. The findings fill the gap in the mitogenome research of the medicinal plant R. chingii, promote the progress of the organelle genome research of the Orobanchaceae family, and provide clues for molecular breeding.


Assuntos
Genoma Mitocondrial , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Doenças Musculares , Orobanchaceae , Rehmannia , Genoma Mitocondrial/genética , Hibridização Genômica Comparativa
9.
Res Dev Disabil ; 145: 104669, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38215502

RESUMO

BACKGROUND: Although physical, cognitive and behavioural manifestations of Williams syndrome (WS) affect every dimension of caregivers lives, no studies on the parental experiences of caring for a WS child have to date been carried out in Poland. METHODS: In order to identify the challenges and needs of Polish carers of WS children a survey was conducted with 32 family caregivers who were supported by the Polish Williams Syndrome Association. RESULTS: While caregivers were mostly challenged by their WS child's behaviours, health problems and mood swings, many parents experienced fatigue, intimacy problems with the partner and deterioration of mental health. They were also burdened by the lack of time for themselves and work restrictions resulting from caregiving responsibilities. Even though parents positively assessed quality of medical care for WS children, still many expressed their dissatisfaction both with the way the healthcare system for WS children works in Poland and complained about the doctors' lack of knowledge about WS, access to specialist care and lack of support from government and social institutions. Although many parents stressed positive impact of rising WS child, more than half experienced role captivity or role overload and felt not being understood by others. They also experienced variety of distressing emotions, including impatience, emotional lability, helplessness, anxiety and depression. CONCLUSIONS: Although many WS parents stressed the affirmative aspect of raising WS child this research shows that the burden of caring for such a child goes far beyond clinical aspects and seriously affects every aspect of parents' lives, including their mental health, daily lives, family, their professional and social lives. Because apart from the daily challenges related to caring for a WS child, parents' dealings with the healthcare system and support services represent major problems there is a the need for a bio-psychosocial approach to WS that should include not only WS children, but also their caregivers. WHAT THIS PAPER ADDS?: 1. It analyses the challenges and needs of parents caring for children with Williams syndrome; 2. It provides evidence that the impact of caring for WS children goes far beyond clinical aspects and seriously affects every aspect of parents' lives, including their mental health, daily lives, family, their professional and social lives; 3. It also shows that, apart from the daily challenges related to caring for a WS child, parents' dealings with the healthcare system and support services represent major problems. 4. Thereby, it highlights the importance of incorporating a bio-psychosocial approach to WS that should include not only WS children, but also their caregivers.


Assuntos
Anormalidades Múltiplas , Doenças Genéticas Ligadas ao Cromossomo X , Eritrodermia Ictiosiforme Congênita , Deformidades Congênitas dos Membros , Síndrome de Williams , Criança , Humanos , Polônia , Pais/psicologia , Cuidadores/psicologia , Saúde Mental
10.
J Dermatol ; 51(1): 101-105, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37752865

RESUMO

Pathogenic variants in ABCA12 are important causative genetic defects for autosomal recessive congenital ichthyoses (ARCI), which include congenital ichthyosiform erythroderma (CIE), harlequin ichthyosis, and lamellar ichthyosis. In addition, pathogenic variants in ABCA12 are known to cause a localized nevoid form of CIE due to recessive mosaicism. We previously reported siblings who carried an ABCA12 variant but did not show a "congenital" phenotype. They were considered to have pityriasis rubra pilaris (PRP). Here, we present a further patient with ABCA12 variants whose phenotype was not congenital ichthyosis, in an independent family. Notably, these three patients had geographic unaffected areas. Such areas are not usually found in patients with ARCI who have ABCA12 variants, suggesting mild phenotypes for these patients. Interestingly, the histological features of the ichthyotic lesions in these patients resembled those of PRP. All three patients had homozygous pathogenic missense variants in ABCA12. Our findings expand the phenotypic spectrum of patients with ABCA12 variants.


Assuntos
Eritrodermia Ictiosiforme Congênita , Ictiose Lamelar , Ictiose , Pitiríase Rubra Pilar , Humanos , Pitiríase Rubra Pilar/genética , Ictiose Lamelar/genética , Eritrodermia Ictiosiforme Congênita/genética , Eritrodermia Ictiosiforme Congênita/patologia , Fenótipo , Mutação , Transportadores de Cassetes de Ligação de ATP/genética
11.
Glob Health Sci Pract ; 11(4)2023 08 28.
Artigo em Inglês | MEDLINE | ID: mdl-37640492

RESUMO

Clinical decision support systems (CDSSs) can strengthen the quality of integrated management of childhood illness (IMCI) in resource-constrained settings. Several IMCI-related CDSSs have been developed and implemented in recent years. Yet, despite having a shared starting point, the IMCI-related CDSSs are markedly varied due to the need for interpretation when translating narrative guidelines into decision logic combined with considerations of context and design choices. Between October 2019 and April 2021, we conducted a comparative analysis of 4 IMCI-related CDSSs. The extent of adaptations to IMCI varied, but common themes emerged. Scope was extended to cover a broader range of conditions. Content was added or modified to enhance precision, align with new evidence, and support rational resource use. Structure was modified to increase efficiency, improve usability, and prioritize care for severely ill children. The multistakeholder development processes involved syntheses of recommendations from existing guidelines and literature; creation and validation of clinical algorithms; and iterative development, implementation, and evaluation. The common themes surrounding adaptations of IMCI guidance highlight the complexities of digitalizing evidence-based recommendations and reinforce the rationale for leveraging standards for CDSS development, such as the World Health Organization's SMART Guidelines. Implementation through multistakeholder dialogue is critical to ensure CDSSs can effectively and equitably improve quality of care for children in resource-constrained settings.


Assuntos
Sistemas de Apoio a Decisões Clínicas , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Criança , Humanos , Algoritmos
15.
Genes (Basel) ; 14(5)2023 05 14.
Artigo em Inglês | MEDLINE | ID: mdl-37239440

RESUMO

Netherton syndrome (NS) is a rare autosomal recessive disorder caused by SPINK5 mutations, resulting in a deficiency in its processed protein LEKTI. It is clinically characterized by the triad of congenital ichthyosis, atopic diathesis, and hair shaft abnormalities. The SPINK5 (NM_006846.4): c.1258A>G polymorphism (rs2303067) shows a significant association with atopy and atopic dermatitis (AD), which share several clinical features with NS. We describe an NS patient, initially misdiagnosed with severe AD, who carried the heterozygous frameshift (null) mutation (NM_006846.4): c.957_960dup combined with homozygous rs2303067 in the SPINK5 gene. Histopathological examination confirmed the diagnosis, whereas an immunohistochemical study showed normal epidermal expression of LEKTI, despite the genetic findings. Our results corroborate the hypothesis that haploinsufficiency of SPINK5, in the presence of a SPINK5 null heterozygous mutation in combination with homozygous SPINK5 rs2303067 polymorphism, can be causative of an NS phenotype, impairing the function of LEKTI despite its normal expression. Due to the clinical overlap between NS and AD, we suggest performing SPINK5 genetic testing to search for the SPINK5 (NM_006846.4): c.1258A>G polymorphism (rs2303067) and ensure a correct diagnosis, mainly in doubtful cases.


Assuntos
Dermatite Atópica , Eritrodermia Ictiosiforme Congênita , Síndrome de Netherton , Humanos , Mutação da Fase de Leitura , Síndrome de Netherton/genética , Inibidor de Serinopeptidase do Tipo Kazal 5/genética , Mutação , Eritrodermia Ictiosiforme Congênita/genética , Dermatite Atópica/genética
17.
Genes (Basel) ; 14(3)2023 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-36980989

RESUMO

Autosomal recessive congenital ichthyosis (ARCI) is a non-syndromic congenital disorder of cornification characterized by abnormal scaling of the skin. The three major phenotypes are lamellar ichthyosis, congenital ichthyosiform erythroderma, and harlequin ichthyosis. ARCI is caused by biallelic mutations in ABCA12, ALOX12B, ALOXE3, CERS3, CYP4F22, NIPAL4, PNPLA1, SDR9C7, SULT2B1, and TGM1. The most severe form of ARCI, harlequin ichthyosis, is caused by mutations in ABCA12. Mutations in this gene can also lead to congenital ichthyosiform erythroderma or lamellar ichthyosis. We present a large cohort of 64 patients affected with ARCI carrying biallelic mutations in ABCA12. Our study comprises 34 novel mutations in ABCA12, expanding the mutational spectrum of ABCA12-associated ARCI up to 217 mutations. Within these we found the possible mutational hotspots c.4541G>A, p.(Arg1514His) and c.4139A>G, p.(Asn1380Ser). A correlation of the phenotype with the effect of the genetic mutation on protein function is demonstrated. Loss-of-function mutations on both alleles generally result in harlequin ichthyosis, whereas biallelic missense mutations mainly lead to CIE or LI.


Assuntos
Eritrodermia Ictiosiforme Congênita , Ictiose Lamelar , Humanos , Ictiose Lamelar/genética , Genes Recessivos , Mutação , Eritrodermia Ictiosiforme Congênita/genética , Estudos de Associação Genética , Transportadores de Cassetes de Ligação de ATP/genética , Aciltransferases/genética , Fosfolipases/genética
18.
Clin Exp Dermatol ; 48(6): 623-630, 2023 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-36794376

RESUMO

BACKGROUND: In two severe congenital ichthyosis subtypes, autosomal recessive lamellar ichthyosis (ARCI-LI) and X-linked recessive ichthyosis (XLRI), cutaneous manifestations include widespread scaling. Approved topical treatment options are limited to emollients and keratolytics. AIM: This analysis from the randomized phase IIb CONTROL study assessed whether the efficacy and safety of TMB-001, a novel topical isotretinoin ointment formulation, differed between ARCI-LI and XLRI subtypes. METHODS: Participants ≥ 9 years with genetically confirmed XLRI or ARCI-LI and ≥ 2 (of 4) Visual Index for Ichthyosis Severity (VIIS) assessment areas with ≥ 3 scaling score were randomized 1 : 1 : 1 to TMB-001 0.05%/TMB-001 0.1%/vehicle, twice daily for 12 weeks. The proportion of participants with ≥ 50% reduction vs. baseline in VIIS scaling (VIIS 50; primary endpoint) and ≥ 2-grade reduction in Investigator's Global Assessment (IGA)-scaling score vs. baseline (key secondary endpoint) were evaluated. Adverse events (AEs) were monitored. RESULTS: Among enrolled participants (TMB-001 0.05%, n = 11; 0.1%, n = 10; and vehicle, n = 12), 52% had ARCI-LI and 48% XLRI subtypes. Mean age was 33.6 and 35.4 years for participants with ARCI-LI and XLRI, respectively. Overall, 33%, 50% and 17% of participants with ARCI-LI and 100%, 33% and 75% of participants with XLRI achieved VIIS 50 in the TMB-001 0.05%, TMB-001 0.1% and vehicle groups, respectively (nominal P = 0.24 for 0.05% vs. vehicle, intent-to-treat population). Improvement of ≥ 2-grade IGA score was observed in 33%, 50% and 0% of participants with ARCI-LI and 83%, 33% and 25% of participants with XLRI in the TMB-001 0.05%, TMB-001 0.1% and vehicle groups, respectively (nominal P = 0.03 for 0.05% vs. vehicle, intention-to-treat population). Most AEs were application-site reactions. CONCLUSION: Regardless of congenital ichthyosis subtype, TMB-001 demonstrated greater proportions of participants achieving VIIS 50 and ≥ 2-grade IGA improvement vs. vehicle.


Assuntos
Eritrodermia Ictiosiforme Congênita , Ictiose Lamelar , Ictiose Ligada ao Cromossomo X , Ictiose , Humanos , Adulto , Ictiose Lamelar/tratamento farmacológico , Ictiose Lamelar/genética , Isotretinoína/uso terapêutico , Imunoglobulina A
19.
BMJ Case Rep ; 16(2)2023 Feb 17.
Artigo em Inglês | MEDLINE | ID: mdl-36805864

RESUMO

A teenage boy who was previously diagnosed to have congenital ichthyosis presented to the eye clinic with complaints of gradually decreasing vision in both eyes since childhood. The best-corrected distance visual acuity was 20/125 in the right eye and 20/40 in the left eye. Clinical examination revealed developmental cataracts in both eyes. He underwent cataract surgery in the right eye and visual acuity improved to 20/25. Hence, we conclude that congenital ichthyosis can be associated with developmental cataracts. Cataract surgery helps in restoring vision in those with visually significant cataracts.


Assuntos
Extração de Catarata , Catarata , Eritrodermia Ictiosiforme Congênita , Ictiose Lamelar , Masculino , Adolescente , Humanos , Criança , Ictiose Lamelar/complicações , Ictiose Lamelar/diagnóstico , Olho , Catarata/complicações
20.
Curr Opin Oncol ; 35(2): 87-93, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36721893

RESUMO

PURPOSE OF REVIEW: Dendritic cells (DCs) are the gatekeepers of our immune system and indispensable in the antitumor immune response. In recent years, their classification has been revised considerably using single-cell sequencing approaches. In this review, we focus on their unique role in cancer and how specific DC subsets can be manipulated to induce an effective and durable antitumor response. RECENT FINDINGS: Historically, due to the ease of their isolation in sufficient cell numbers from peripheral blood, the utility of monocyte-derived DCs as therapeutic cancer vaccines was explored in the clinic. However, it became clear that naturally circulating myeloid DCs (myDC), exerting their physiological role, are a functionally more powerful cellular source of antigen presenting cells. With the advent of immunomagnetic bead technology to isolate naturally circulating DC subsets, the therapeutic value of these myDC subsets is currently being explored. Since DCs are also needed in the tumor microenvironment in order to "relicense" the activity of antitumor T cells, also intratumoral administration routes for DC vaccines are explored. In addition, to circumvent the use of expensive cellular vaccines, approaches to attract DCs to the tumor microenvironment are considered of interest in order to repair a defective cancer-immunity cycle. SUMMARY: In recent years, the type of DCs used for vaccination and their administration route evolved considerably. Intratumoral vaccination strategies require combination with additional stimuli to ensure proper functioning of DCs in the tumor microenvironment. Moreover, intratumoral administration limits the applicability to patients with accessible lesions.


Assuntos
Vacinas Anticâncer , Eritrodermia Ictiosiforme Congênita , Erros Inatos do Metabolismo Lipídico , Melanoma , Humanos , Vacinas Anticâncer/uso terapêutico , Melanoma/terapia , Células Dendríticas , Microambiente Tumoral
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...