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1.
Biochem Biophys Res Commun ; 733: 150700, 2024 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-39293332

RESUMO

Parathyroid hormone (PTH) and fibroblast growth factor-23 (FGF23) control serum phosphate levels by downregulating the renal Na-phosphate transporter NPT2A, thereby decreasing phosphate absorption and augmenting urinary excretion. This mechanism requires NHERF1, a PDZ scaffold protein, and is governed by the regulator of G protein signaling-14 (RGS14), which harbors a carboxy-terminal PDZ ligand that binds NHERF1. RGS14 is part of a triad of structurally related RGS proteins that includes RGS12 and RGS10. Like RGS14, RGS12 contains a class 1 PDZ ligand. However, unlike RGS14, the larger RGS12 contains an upstream PDZ-binding domain. The studies outlined here examined and characterized the binding of RGS12 with NHERF1 and NPT2A and its function on hormone-regulated phosphate transport. Immunoblotting experiments revealed RGS12 C-terminal PDZ ligand binding to NHERF1. Further structural analysis disclosed that NPT2A engaged full-length RGS12 and the upstream fragment containing the PDZ domain. Neither the downstream RGS12 portion nor RGS14 interacted with NPT2A. PTH and FGF23 profoundly inhibited phosphate uptake in opossum kidney proximal tubule cells. Transfection with human RGS14, or human RGS12, abolished hormone-sensitive phosphate transport as reported for human proximal tubule cells. RGS12 inhibitory activity resides in the downstream region and is comparable to RGS14. The carboxy-terminal RGS12(667-1447) splice variant is prominently expressed in the kidney and may contribute to regulating hormone-sensitive phosphate transport.

2.
Sleep Adv ; 5(1): zpae062, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39314745

RESUMO

Study Objectives: The aims of this review were to identify existing national surveillance systems monitoring one or more domains of sleep health in adults, and to describe the specific sleep health indicators used. Methods: We systematically searched the gray and peer-reviewed literature for routinely conducted cross-sectional and longitudinal nationally representative health surveys that included the assessment of at least one domain of sleep health. The methodology involved: (1) targeted searches of the websites of national and international health agencies and statistics departments for 199 countries, (2) country-specific customized internet searches, and (3) country-specific electronic database searches of PubMed. Results: A total of 19 762 records were identified from both the gray and peer-reviewed literature. Sleep health surveillance at the national level was conducted by 51 countries (25.6%) across 69 national health surveys. Sleep quality (96.1% of countries that surveilled sleep) was the most frequently assessed followed by sleep duration (27.5%), sleep medication use (25.5%), sleep disorders (17.6%), daytime alertness (15.7%), sleep satisfaction (15.7%), and sleep timing (7.8%). Additionally, 34.8% of the surveys utilized multiple sleep health indicators. Conclusions: This study identified three significant gaps in the coverage of sleep health within national surveillance systems. Limited population sleep data in low- and middle-income countries, inconsistent use of sleep-related items in surveys and questionnaires, and substantial variability in the definitions of sleep health indicators. Advocacy for the inclusion of sleep health within national surveillance systems may be warranted given the important role sleep plays in public health.

3.
Ann Rheum Dis ; 2024 Sep 24.
Artigo em Inglês | MEDLINE | ID: mdl-39317417

RESUMO

Systemic juvenile idiopathic arthritis (sJIA) and adult-onset Still's disease (AOSD) are considered the same disease, but a common approach for diagnosis and management is still missing. METHODS: In May 2022, EULAR and PReS endorsed a proposal for a joint task force (TF) to develop recommendations for the diagnosis and management of sJIA and AOSD. The TF agreed during a first meeting to address four topics: similarity between sJIA and AOSD, diagnostic biomarkers, therapeutic targets and strategies and complications including macrophage activation syndrome (MAS). Systematic literature reviews were conducted accordingly. RESULTS: The TF based their recommendations on four overarching principles, highlighting notably that sJIA and AOSD are one disease, to be designated by one name, Still's disease.Fourteen specific recommendations were issued. Two therapeutic targets were defined: clinically inactive disease (CID) and remission, that is, CID maintained for at least 6 months. The optimal therapeutic strategy relies on early use of interleukin (IL-1 or IL-6 inhibitors associated to short duration glucocorticoid (GC). MAS treatment should rely on high-dose GCs, IL-1 inhibitors, ciclosporin and interferon-γ inhibitors. A specific concern rose recently with cases of severe lung disease in children with Still's disease, for which T cell directed immunosuppressant are suggested. The recommendations emphasised the key role of expert centres for difficult-to-treat patients. All overarching principles and recommendations were agreed by over 80% of the TF experts with a high level of agreement. CONCLUSION: These recommendations are the first consensus for the diagnosis and management of children and adults with Still's disease.

4.
Breast Cancer Res ; 26(1): 138, 2024 Sep 24.
Artigo em Inglês | MEDLINE | ID: mdl-39317942

RESUMO

BACKGROUND: Patients with pathologic complete response (pCR) to neoadjuvant chemotherapy for invasive breast cancer (BC) have better outcomes, potentially warranting less extensive surgical and systemic treatments. Early prediction of treatment response could aid in adapting therapies. METHODS: On-treatment biopsies from 297 patients with invasive BC in three randomized, prospective neoadjuvant trials were assessed (GeparQuattro, GeparQuinto, GeparSixto). BC quantity, tumor-infiltrating lymphocytes (TILs), and the proliferation marker Ki-67 were compared to pre-treatment samples. The study investigated the correlation between residual cancer, changes in Ki-67 and TILs, and their impact on pathologic complete response (pCR) and disease-free survival (DFS). RESULTS: Among the 297 samples, 138 (46%) were hormone receptor-positive (HR+)/human epidermal growth factor 2-negative (HER2-), 87 (29%) were triple-negative (TNBC), and 72 (24%) were HER2+. Invasive tumor cells were found in 70% of on-treatment biopsies, with varying rates across subtypes (HR+/HER2-: 84%, TNBC: 62%, HER2+: 51%; p < 0.001). Patients with residual tumor on-treatment had an 8% pCR rate post-treatment (HR+/HER2-: 3%, TNBC: 19%, HER2+: 11%), while those without any invasive tumor had a 50% pCR rate (HR+/HER2-: 27%; TNBC: 48%, HER2+: 66%). Sensitivity for predicting residual disease was 0.81, with positive and negative predictive values of 0.92 and 0.50, respectively. Increasing TILs from baseline to on-treatment biopsy (if residual tumor was present) were linked to higher pCR likelihood in the overall cohort (OR 1.034, 95% CI 1.013-1.056 per % increase; p = 0.001) and with a longer DFS in TNBC (HR 0.980, 95% CI 0.963-0.997 per % increase; p = 0.026). Persisting or increased Ki-67 was associated with with lower pCR probability in the overall cohort (OR 0.957, 95% CI 0.928-0.986; p = 0.004) and shorter DFS in TNBC (HR 1.023, 95% CI 1.001-1.047; p = 0.04). CONCLUSION: On-treatment biopsies can predict patients unlikely to achieve pCR post-therapy. This could facilitate therapy adjustments for TNBC or HER2 + BC. They also might offer insights into therapy resistance mechanisms. Future research should explore whether standardized or expanded sampling enhances the accuracy of on-treatment biopsy procedures. Trial registration GeparQuattro (EudraCT 2005-001546-17), GeparQuinto (EudraCT 2006-005834-19) and GeparSixto (EudraCT 2011-000553-23).


Assuntos
Neoplasias da Mama , Linfócitos do Interstício Tumoral , Terapia Neoadjuvante , Receptor ErbB-2 , Humanos , Feminino , Terapia Neoadjuvante/métodos , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/mortalidade , Neoplasias da Mama/metabolismo , Linfócitos do Interstício Tumoral/metabolismo , Linfócitos do Interstício Tumoral/imunologia , Pessoa de Meia-Idade , Biópsia , Adulto , Receptor ErbB-2/metabolismo , Antígeno Ki-67/metabolismo , Idoso , Resultado do Tratamento , Biomarcadores Tumorais/metabolismo , Prognóstico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasia Residual/patologia , Intervalo Livre de Doença , Receptores de Progesterona/metabolismo , Receptores de Estrogênio/metabolismo , Quimioterapia Adjuvante/métodos
5.
Am J Manag Care ; 30(9): e274-e281, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-39302261

RESUMO

OBJECTIVES: The high costs of cancer care can cause significant harm to patients and society. Prostate cancer, the leading nonskin malignancy in men, is responsible for the second-highest out-of-pocket (OOP) payments among all malignancies. Multiple first-line treatment options exist for metastatic castration-resistant prostate cancer (mCRPC); although their costs vary substantially, comparative effectiveness data are limited. There is little evidence of how gross payments made by insurers and OOP payments made by patients differ by treatment and health plan type and how these payment differences relate to utilization. STUDY DESIGN: Retrospective cohort study. METHODS: We used IBM MarketScan databases from 2013-2019 to identify men with prostate cancer who initiated treatment with 1 of 6 drugs approved for first-line treatment of mCRPC. We calculated and compared gross and OOP payments and drug utilization across drug and insurance plan types. RESULTS: We identified 4298 patients who met our inclusion criteria. Insurer payments varied substantially by first-line therapy but were similar across different health plan types, except for docetaxel. OOP payments for a given first-line therapy, in contrast, varied by health plan type. Utilization of first-line therapies varied by plan type in unadjusted analyses, but not after adjusting for patient characteristics. CONCLUSIONS: The extent to which patient OOP payments for drugs reflect differences in gross payments made by insurers varies across health insurance plan types. However, even though OOP payments for the same treatment differ across plan types, treatment choice is not significantly different across type of health insurance after controlling for patient characteristics.


Assuntos
Gastos em Saúde , Seguro Saúde , Humanos , Masculino , Estudos Retrospectivos , Idoso , Gastos em Saúde/estatística & dados numéricos , Estados Unidos , Seguro Saúde/economia , Seguro Saúde/estatística & dados numéricos , Pessoa de Meia-Idade , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Neoplasias de Próstata Resistentes à Castração/patologia , Neoplasias de Próstata Resistentes à Castração/economia , Antineoplásicos/economia , Antineoplásicos/uso terapêutico , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/economia , Neoplasias da Próstata/terapia , Neoplasias da Próstata/patologia , Docetaxel/uso terapêutico , Docetaxel/economia
6.
J Am Chem Soc ; 146(38): 25943-25948, 2024 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-39283691

RESUMO

Despite the discovery of actinide borohydride complexes over 80 years ago, no plutonium borohydride complexes have been structurally validated using single-crystal X-ray diffraction (XRD). Here we describe Pu2(H3BPtBu2BH3)6, the first example of a Pu(III) borohydride complex authenticated by XRD and NMR spectroscopy. Theoretical calculations (DFT, EDA, and QTAIM) and experimental comparisons of metal-boron distances suggest that metal-borohydride covalency in M2(H3BPtBu2BH3)6 complexes generally decreases in the order M = U(III) > Pu(III) > Ln(III).

7.
Elife ; 132024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39302339

RESUMO

Genome-wide association studies (GWAS) have identified hundreds of genetic signals associated with autoimmune disease. The majority of these signals are located in non-coding regions and likely impact cis-regulatory elements (cRE). Because cRE function is dynamic across cell types and states, profiling the epigenetic status of cRE across physiological processes is necessary to characterize the molecular mechanisms by which autoimmune variants contribute to disease risk. We localized risk variants from 15 autoimmune GWAS to cRE active during TCR-CD28 co-stimulation of naïve human CD4+ T cells. To characterize how dynamic changes in gene expression correlate with cRE activity, we measured transcript levels, chromatin accessibility, and promoter-cRE contacts across three phases of naive CD4+ T cell activation using RNA-seq, ATAC-seq, and HiC. We identified ~1200 protein-coding genes physically connected to accessible disease-associated variants at 423 GWAS signals, at least one-third of which are dynamically regulated by activation. From these maps, we functionally validated a novel stretch of evolutionarily conserved intergenic enhancers whose activity is required for activation-induced IL2 gene expression in human and mouse, and is influenced by autoimmune-associated genetic variation. The set of genes implicated by this approach are enriched for genes controlling CD4+ T cell function and genes involved in human inborn errors of immunity, and we pharmacologically validated eight implicated genes as novel regulators of T cell activation. These studies directly show how autoimmune variants and the genes they regulate influence processes involved in CD4+ T cell proliferation and activation.


Assuntos
Linfócitos T CD4-Positivos , Cromatina , Estudo de Associação Genômica Ampla , Interleucina-2 , Ativação Linfocitária , Humanos , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD4-Positivos/metabolismo , Cromatina/metabolismo , Cromatina/genética , Ativação Linfocitária/genética , Interleucina-2/genética , Interleucina-2/metabolismo , Animais , Camundongos , Elementos Facilitadores Genéticos/genética , Doenças Autoimunes/genética , Doenças Autoimunes/imunologia , Regulação da Expressão Gênica , Autoimunidade/genética
8.
Mar Pollut Bull ; 208: 116959, 2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39305841

RESUMO

The heavy metal load in coral reefs of Singapore has not been comprehensively assessed since 1994. Here, we repeated the surveys conducted 27 years ago to quantify the levels of Cd, Cu, Cr, Fe, Pb, Ti, Zn in sediment and the sea urchin Diadema setosum from seven reefs. Cu and Cd showed significant reductions, Pb and Cr remained stable, while Fe, Ti and Zn had increased significantly. Overall, based on the Pollution Load Index (PLI), Singapore's reefs would not be considered polluted. Nevertheless, elevated concentrations of Cu, Pb and Zn were detected in sediment, with Cu and Pb exceeding the Threshold Effect Level. The spatial distribution of metal loads between sediment and sea urchin tissues were decoupled, underscoring the complexity of metal uptake and bioavailability. We reveal a mixed temporal trend among the heavy metals examined, each presenting different toxicity potentials and hence risks to local marine assemblages.

11.
Artigo em Inglês | MEDLINE | ID: mdl-39233016

RESUMO

BACKGROUND: A 6-food elimination diet in pediatric eosinophilic esophagitis (EoE) is difficult to implement and may negatively affect quality of life (QoL). Less restrictive elimination diets may balance QoL and efficacy. OBJECTIVE: We performed a multisite, randomized comparative efficacy trial of a 1-food (milk) elimination diet (1FED) versus 4-food (milk, egg, wheat, soy) elimination diet (4FED) in pediatric EoE. METHODS: Patients aged 6 to 17 years with histologically active and symptomatic EoE were randomized 1:1 to 1FED or 4FED for 12 weeks. Primary end point was symptom improvement by Pediatric Eosinophilic Esophagitis Symptom Score (PEESS). Secondary end points were proportion experiencing histologic remission (<15 eosinophils per high-power field); change in histologic features (histology scoring system), endoscopic severity (endoscopic reference score), transcriptome (EoE diagnostic panel), and QoL scores; and predictors of remission. RESULTS: Sixty-three patients were randomly assigned to 1FED (n = 38) and 4FED (n = 25). In 4FED versus 1FED, mean PEESS improved -25.0 versus -14.5 (P = .04), but remission rates (41% vs 44%; P = 1.00), histology scoring system (-0.25 vs -0.29; P = .77), endoscopic reference score (-1.10 vs -0.58; P = .47), and QoL scores were similar between groups. The EoE transcriptome normalized in those with histologic response to both diets. Baseline peak eosinophil count predicted remission (odds ratio, 0.975 [95% confidence interval, 0.953-0.999], P = .04; cutoff ≤42 eosinophils per high-power field). The 4FED withdrawal rate (32%) exceeded that of 1FED (11%) (P = .0496). CONCLUSIONS: Although 4FED moderately improved symptoms compared with 1FED, the histologic, endoscopic, QoL, and transcriptomic outcomes were similar in both groups. 1FED is a reasonable first-choice therapy for pediatric EoE, given its effects, tolerability, and relative simplicity.

12.
Mult Scler ; 30(10): 1268-1277, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39234802

RESUMO

BACKGROUND: Cerebrospinal fluid (CSF) oligoclonal bands (OCB) are a diagnostic biomarker in multiple sclerosis (MS). The central vein sign (CVS) is an imaging biomarker for MS that may improve diagnostic accuracy. OBJECTIVES: The objective of the study is to examine the diagnostic performance of simplified CVS methods in comparison to OCB in participants with clinical or radiological suspicion for MS. METHODS: Participants from the CentrAl Vein Sign in MS (CAVS-MS) pilot study with CSF testing were included. Select-3 and Select-6 (counting up to three or six CVS+ lesions per scan) were rated on post-gadolinium FLAIR* images. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value for Select-3, Select-6, OCB, and combinations thereof were calculated for MS diagnosis at baseline and at 12 months. RESULTS: Of 53 participants, 25 were OCB+. At baseline, sensitivity for MS diagnosis was 0.75 for OCB, 0.83 for Select-3, and 0.71 for Select-6. Specificity for MS diagnosis was 0.76 for OCB, 0.48 for Select-3, and 0.86 for Select-6. At 12 months, PPV for MS diagnosis was 0.95 for Select-6 and 1.00 for Select-6 with OCB+ status. DISCUSSION: Results suggest similar diagnostic performance of simplified CVS methods and OCB. Ongoing studies will refine whether CVS could be used in replacement or in conjunction with OCB.


Assuntos
Imageamento por Ressonância Magnética , Esclerose Múltipla , Bandas Oligoclonais , Humanos , Bandas Oligoclonais/líquido cefalorraquidiano , Adulto , Feminino , Masculino , Esclerose Múltipla/diagnóstico por imagem , Esclerose Múltipla/líquido cefalorraquidiano , Pessoa de Meia-Idade , Projetos Piloto , Sensibilidade e Especificidade , Biomarcadores/líquido cefalorraquidiano , Veias Cerebrais/diagnóstico por imagem , Valor Preditivo dos Testes
13.
bioRxiv ; 2024 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-39314470

RESUMO

γ-aminobutyric acid (GABA) is an abundant neurotransmitter that plays multiple roles in the vertebrate central nervous system (CNS). In the early developing CNS, GABAergic signaling acts to depolarize cells. It mediates several aspects of neural development, including cell proliferation, neuronal migration, neurite growth, and synapse formation, as well as the development of critical periods. Later in CNS development, GABAergic signaling acts in an inhibitory manner when it becomes the predominant inhibitory neurotransmitter in the brain. This behavior switch occurs due to changes in chloride/cation transporter expression. Abnormalities of GABAergic signaling appear to underlie several human neurological conditions, including seizure disorders. However, the impact of reduced GABAergic signaling on brain development has been challenging to study in mammals. Here we take advantage of zebrafish and light sheet imaging to assess the impact of reduced GABAergic signaling on the functional circuitry in the larval zebrafish optic tectum. Zebrafish have three gad genes: two gad1 paralogs known as gad1a and gad1b , and gad2. The gad1b and gad2 genes are expressed in the developing optic tectum. Null mutations in gad1b significantly reduce GABA levels in the brain and increase electrophysiological activity in the optic tectum. Fast light sheet imaging of genetically encoded calcium indicator (GCaMP)-expressing gab1b null larval zebrafish revealed patterns of neural activity that were different than either gad1b-normal larvae or gad1b -normal larvae acutely exposed to pentylenetetrazole (PTZ). These results demonstrate that reduced GABAergic signaling during development increases functional connectivity and concomitantly hyper-synchronization of neuronal networks. Significance Statement: Understanding the impact of reduced GABAergic signaling on vertebrate brain development and function will help elucidate the etiology of seizure initiation and propagation and other neurological disorders due to the altered formation of neural circuits. Here, we used fast light sheet imaging of larval zebrafish that neuronally expressed a genetically encoded calcium indicator (GCaMP) to assess the impact of reduced GABA levels through null mutation of gad1b during brain development. We show that reduced GABA levels during development result in increased functional connectivity in the brain.

14.
J Virol ; : e0111924, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39311578

RESUMO

The mechanism used by polyomavirus and other viral SF3 helicases to unwind DNA at replication forks remains unknown. Using AlphaFold2, we have determined the structure of a representative SF3 helicase, the SV40 T-antigen (T-ag). This model has been analyzed in terms of the features of T-ag required for helicase activity, particularly the proximity of the T-ag origin binding domain (OBD) to the replication fork and the distribution of basic residues on the surface of the OBD that are known to play roles in DNA unwinding. These and related studies provide additional evidence that the T-ag OBDs have a role in the unwinding of DNA at the replication fork. Nuclear magnetic resonance and modeling experiments also indicate that protonated histidines on the surface of the T-ag OBD play an important role in the unwinding process, and additional modeling studies indicate that protonated histidines are essential in other SF3 and SF6 helicases. Finally, a model for T-ag's helicase activity is presented, which is a variant of the "rope climber." According to this model, the hands are the N-terminal OBD domains that interact with the replication fork, while the C-terminal helicase domains contain the feet that bind to single-stranded DNA. IMPORTANCE: Enzymes termed helicases are essential for the replication of DNA tumor viruses. Unfortunately, much remains to be determined about this class of enzymes, including their structures and the mechanism(s) they employ to unwind DNA. Herein, we present the full-length structure of a model helicase encoded by a DNA tumor virus. Moreover, this AI-based structure has been analyzed in terms of its basic functional properties, such as the orientation of the helicase at replication forks and the relative locations of the amino acid residues that are critical for helicase activity. Obtaining this information is important because it permits proposals regarding how DNA is routed through these model helicases. Also presented is structural evidence that the conclusions drawn from our detailed analyses of one model helicase, encoded by one class of tumor viruses, are likely to apply to other viral and eukaryotic helicases.

15.
BMC Health Serv Res ; 24(1): 1066, 2024 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-39272036

RESUMO

BACKGROUND: In low- and middle-income countries (LMICs), such as Tanzania, the competency of healthcare providers critically influences the quality of pediatric care. To address this issue, we introduced Pediatric Acute Care Education (PACE), an adaptive learning program to enhance provider competency in Tanzania's guidelines for managing seriously ill children. Adaptive learning is a promising alternative to current in-service education, yet optimal implementation strategies in LMIC settings are unknown. OBJECTIVES: (1) To evaluate the initial PACE implementation in Mwanza, Tanzania, using the construct of normalization process theory (NPT); (2) To provide insights into its feasibility, acceptability, and scalability potential. METHODS: Mixed-methods study involving healthcare providers at three facilities. Quantitative data was collected using the Normalization MeAsure Development (NoMAD) questionnaire, while qualitative data was gathered through in-depth interviews (IDIs) and focus groups discussions (FGDs). RESULTS: Eighty-two healthcare providers completed the NoMAD survey. Additionally, 24 senior providers participated in IDIs, and 79 junior providers participated in FGDs. Coherence and cognitive participation were high, demonstrating that PACE is well understood and resonates with existing healthcare goals. Providers expressed a willingness to integrate PACE into their practices, distinguishing it from existing educational methods. However, challenges related to resources and infrastructure, particularly those affecting collective action, were noted. Early indicators point toward the potential for long-term sustainability of the PACE, but assessment of reflexive monitoring was limited due to the study's focus on PACE's initial implementation. CONCLUSION: This study offers vital insights into the feasibility and acceptability of implementing PACE in a Tanzanian context. While PACE aligns well with healthcare objectives, addressing resource and infrastructure challenges as well as conducting a longer-term study to assess reflexive monitoring is crucial for its successful implementation. Furthermore, the study underscores the value of the NPT as a framework for guiding implementation processes, with broader implications for implementation science and pediatric acute care in LMICs.


Assuntos
Grupos Focais , Pediatria , Tanzânia , Humanos , Masculino , Feminino , Pediatria/educação , Competência Clínica , Pessoal de Saúde/educação , Avaliação de Programas e Projetos de Saúde , Inquéritos e Questionários , Criança , Adulto , Pesquisa Qualitativa
17.
Curr Protoc ; 4(9): e70003, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39258384

RESUMO

DNA methylation is well-established as a major epigenetic mechanism that can control gene expression and is involved in both normal development and disease. Analysis of high-throughput-sequencing-based DNA methylation data is a step toward understanding the relationship between disease and phenotype. Analysis of CpG methylation at single-base resolution is routinely done by bisulfite sequencing, in which methylated Cs remain as C while unmethylated Cs are converted to U, subsequently seen as T nucleotides. Sequence reads are aligned to the reference genome using mapping tools that accept the C-T ambiguity. Then, various statistical packages are used to identify differences in methylation between (groups of) samples. We have previously developed the Differential Methylation Analysis Pipeline (DMAP) as an efficient, fast, and flexible tool for this work, both for whole-genome bisulfite sequencing (WGBS) and reduced-representation bisulfite sequencing (RRBS). The protocol described here includes a series of scripts that simplify the use of DMAP tools and that can accommodate the wider range of input formats now in use to perform analysis of whole-genome-scale DNA methylation sequencing data in various biological and clinical contexts. © 2024 The Author(s). Current Protocols published by Wiley Periodicals LLC. Basic Protocol: DMAP2 workflow for whole-genome bisulfite sequencing (WGBS) and reduced-representation bisulfite sequencing (RRBS).


Assuntos
Metilação de DNA , Sulfitos , Sequenciamento Completo do Genoma , Sequenciamento Completo do Genoma/métodos , Humanos , Sulfitos/química , Análise de Sequência de DNA/métodos , Software , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Ilhas de CpG/genética
18.
Artigo em Inglês | MEDLINE | ID: mdl-39254092

RESUMO

Influenza A virus (IAV) infection is a major health risk during pregnancy. Whilst vaccination and antiviral agents are widely employed and reduce IAV-induced symptoms, they are not sufficient to control IAV infections in pregnancy, especially during pandemics. Respiratory viruses like IAV, exploit immune alterations that occur during pregnancy, including the upregulation of immune checkpoint proteins (ICPs) like PDL1, PD1 and CTLA4. We hypothesize that blocking expression of PDL1 on innate immune cells will improve maternal immunity following IAV infection. We utilized murine models of IAV infection during pregnancy with and without treatment with the immune checkpoint inhibitor (ICI), a-PDL1. Pregnant and non-pregnant mice were infected with mouse adapted IAV (A/PR/8) and assessed at 3 days post infection (3dpi). Lung cells were analyzed using flow cytometry. Lung mRNA expression of inflammatory and antiviral markers and histology was measured. Protein concentrations of inflammatory and antiviral markers, as well as viral titers was measured from lung bronchiolar lavage fluid (BALF). Lung function was also assessed. Following IAV infection, immune cells from pregnant mice had significant increases in the ICPs, PDL1, PD1 and CTLA4. a-PDL1 treatment effectively suppressed these ICPs and increased the activation marker, CD86. A-PDL1 treatment also reduced lung inflammatory cell infiltration and viral titres, increased antiviral responses, and improved lung function. Overall, IAV infection in pregnancy activates key inhibitory ICPs, leading to worsened disease outcomes. a-PDL1 treatment during IAV infection in pregnancy is an effective method to reduce ICP expression and improve overall immune cell responses.

19.
Cureus ; 16(8): e66911, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39280511

RESUMO

In Hungary, possessing certain weapons (e.g. firearms, bows, air pistols, and air guns mainly over 7.5 Joule muzzle velocity) is strictly regulated. In case of firearm deaths, in our country, we usually have to consider the role of military personnel or a hunter. Getting a game license for five years is a complex procedure. Class participation in weapon training, hunter ethics, and rules, first aid, manners of hunting, wild animals' knowledge, wildlife management, game laws, etc. is compulsory besides a prosperous exam at the Hunt Authority. A psychological license is also mandatory. Through permission from the police for a firearm license, buying weapons for hunting is possible. The storage of firearms and cartridges is rigidly controlled and checked. Some special types of hunting (e.g. with a bow, bird of prey) require additional licenses. The fact and the duration of the hunt and all shoots should be registered. The authors report an extraordinary fatal hunting accident because of non-regulation rifle (Blaser R8 338) use (unintentional shot), in which the travel distance of the projectile was more than 2000 m and the victim suffered fatal injuries at his daughter's homeyard. This was a non-target, extreme long-range shot. The ethical range in hunting is within 150 m, a practiced hunter with proper precision tools can shoot accurately within 300-400 m and in extremely rare cases within 700-800 m. Military snipers can operate over a 1000 m distance. Even if this was a targeted shot (with a 2161 m range), not many professionals would have been able to aim at the target. A sequence of accidents was necessary for this fatal case. With the application of X-ray examination and a special layer-by-layer method of forensic autopsy, the bullet, the entry wound, the primary shot channel, and lethal injuries have been revealed. With the help of the found projectile and the rigorous hunting regulations, the alleged perpetrator was identified within a short time.

20.
JU Open Plus ; 2(3)2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39281710

RESUMO

Introduction: Promising new treatments exist for advanced prostate cancer. Decision-making is complicated: there is minimal comparative effectiveness data; differing routes of administration, drug mechanisms-of-action and side effects; and significant price differences. These challenges contribute to variations in care and quality, treatment disparities, and lack of concordance with patient values. The aim of this study was to examine physician perspectives of factors influencing decision-making for first-line advanced prostate cancer treatments. Methods: We conducted a qualitative descriptive study of physicians who treat patients with advanced prostate cancer from 09/2021-06/2022. Participants were purposively sampled from across the United States. Results: Twenty-seven physicians participated. We identified seventeen domains and three overarching themes affecting physician decision-making for advanced prostate cancer care. The themes were: 1) physician and practice factors impact prescribing decisions, 2) health practice resource availability affects the likelihood patients will receive the recommended treatment, and that the treatment will be in-line with patients' values and 3) patient non-clinical factors influence physician decision-making, but patient values could be better incorporated into prescribing decisions. Based upon the analyses, we constructed a preliminary framework of clinician decision-making for advanced prostate cancer. Conclusions: Physicians perceive non-clinical patient, physician, and practice factors impact decision-making. These factors, therefore, must be considered when implementing programs to optimize a physician's ability to provide quality cancer care, reduce health care disparities and patient financial burden and provide patient goal-concordant care. The preliminary theoretical model of clinician decision-making for advanced prostate cancer care may also be used to inform these efforts.

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