Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 828
Filtrar
1.
Contemp Clin Trials ; 141: 107537, 2024 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-38614445

RESUMO

INTRODUCTION: Children, adolescent, and young adult cancer survivors experience overall increased risks of infertility that are preventable through effective fertility preservation services prior to starting cancer treatment. Oncofertility care is the evidence-based practice of informing newly diagnosed cancer patients about their reproductive risks and supporting shared decision-making on fertility preservation services. Despite longstanding clinical guidelines, oncofertility care delivery continues to be limited and highly variable across adult and pediatric oncology settings. MATERIALS AND METHODS: We describe the design of a stepped wedge cluster randomized clinical trial to evaluate the effectiveness of the multi-component Telehealth Oncofertility Care (TOC) intervention conducted in 20 adult and pediatric oncology clinics across three health systems in Southern California. Intervention components are: 1) electronic health record-based oncofertility needs screen and referral pathway to a virtual oncofertility hub; 2) telehealth oncofertility counseling through the hub; and 3) telehealth oncofertility financial navigation through the hub. We hypothesize the intervention condition will be associated with increased proportions of patients who engage in goal-concordant oncofertility care (i.e., engagement in reproductive risk counseling and fertility preservation services that meet the patient's fertility goals) and improved patient-reported outcomes, compared to the usual care control condition. We will also evaluate intervention implementation in a mixed-methods study guided by implementation science frameworks. DISCUSSION: Our overall goal is to speed implementation of a scalable oncofertility care intervention at cancer diagnosis for children, adolescent and young adult cancer patients to improve their future fertility and quality of life. TRIAL REGISTRATION: Clinicaltrials.gov Identifier: NCT05443737.

2.
Nan Fang Yi Ke Da Xue Xue Bao ; 44(2): 317-323, 2024 Feb 20.
Artigo em Chinês | MEDLINE | ID: mdl-38501417

RESUMO

OBJECTIVE: To investigate the role of caspase-1-medicated canonical pyroptosis pathway in chlorogenic acid (CGA) treatment of acute kidney injury (AKI) in mice. METHOD: Twenty-four C57Bl/6J mice were randomized into sham-operated group, cecal ligation and puncture (CLP) group, CLP+dexamethasone group (CLP+DXM group), and CLP+CGA group (n=6) and subjected to either sham operation (laparotomy only) or CLP. After modeling the mice received intravenous infusion of 10 mg/kg normal saline (in sham and CLP groups), 1 µg/kg dexamethasone or 15 mg/kg of chlorogenic acid for 6 h delivered using an intravenous pump. Eight hours after the infusion, renal morphology and histology, renal cell apoptosis, and the renal function parameters such as urea nitrogen (BUN), creatinine (Scr), and kidney injury molecule 1 (KIM-1) were compared among the 4 groups; the 7-day survival rates of the mice were recorded, and the expressions of NLRP3 inflammasomes and key proteins of the caspase-1 pathway in the renal tissue were detected. RESULTS: CGA treatment significantly improved the 7-day survival rate, reduced renal pathologies of the septic mice (P < 0.05), and lowered the levels of BUN, Scr, KIM-1, NLRP3 inflammasome and expressions of key proteins of the caspase-1 pathway. CONCLUSION: CGA alleviates AKI in mice with CLP-induced sepsis by inhibiting NLRP3 inflammasomes and the caspase-1 signaling pathway.


Assuntos
Injúria Renal Aguda , Sepse , Camundongos , Animais , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR , Caspase 1/metabolismo , Piroptose , Ácido Clorogênico/uso terapêutico , Injúria Renal Aguda/metabolismo , Sepse/tratamento farmacológico , Sepse/metabolismo , Dexametasona/uso terapêutico , Camundongos Endogâmicos C57BL
3.
EBioMedicine ; 102: 105025, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38458111

RESUMO

BACKGROUND: Lung function trajectories (LFTs) have been shown to be an important measure of long-term health in asthma. While there is a growing body of metabolomic studies on asthma status and other phenotypes, there are no prospective studies of the relationship between metabolomics and LFTs or their genomic determinants. METHODS: We utilized ordinal logistic regression to identify plasma metabolite principal components associated with four previously-published LFTs in children from the Childhood Asthma Management Program (CAMP) (n = 660). The top significant metabolite principal component (PCLF) was evaluated in an independent cross-sectional child cohort, the Genetic Epidemiology of Asthma in Costa Rica Study (GACRS) (n = 1151) and evaluated for association with spirometric measures. Using meta-analysis of CAMP and GACRS, we identified associations between PCLF and microRNA, and SNPs in their target genes. Statistical significance was determined using an false discovery rate-adjusted Q-value. FINDINGS: The top metabolite principal component, PCLF, was significantly associated with better LFTs after multiple-testing correction (Q-value = 0.03). PCLF is composed of the urea cycle, caffeine, corticosteroid, carnitine, and potential microbial (secondary bile acid, tryptophan, linoleate, histidine metabolism) metabolites. Higher levels of PCLF were also associated with increases in lung function measures and decreased circulating neutrophil percentage in both CAMP and GACRS. PCLF was also significantly associated with microRNA miR-143-3p, and SNPs in three miR-143-3p target genes; CCZ1 (P-value = 2.6 × 10-5), SLC8A1 (P-value = 3.9 × 10-5); and TENM4 (P-value = 4.9 × 10-5). INTERPRETATION: This study reveals associations between metabolites, miR-143-3p and LFTs in children with asthma, offering insights into asthma physiology and possible interventions to enhance lung function and long-term health. FUNDING: Molecular data for CAMP and GACRS via the Trans-Omics in Precision Medicine (TOPMed) program was supported by the National Heart, Lung, and Blood Institute (NHLBI).


Assuntos
Asma , MicroRNAs , Criança , Humanos , Estudos Transversais , Pulmão/metabolismo , MicroRNAs/metabolismo , Metabolômica
4.
medRxiv ; 2024 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-38496582

RESUMO

Despite the high prevalence of neurodevelopmental disorders, there are a lack of clinical studies examining the impact of pregnancy diet on child neurodevelopment. This observational clinical study examined the associations between pregnancy dietary patterns and neurodevelopmental diagnoses, as well as their symptoms, in a prospective cohort of 10-year-old children (n=508). Data-driven dietary patterns were derived from self-reported food frequency questionnaires. An Unhealthy dietary pattern in pregnancy (per SD change) was significantly associated with attention deficit hyperactivity disorder (ADHD) OR 1.66 [1.21 - 2.27], p=0.002 and autism diagnosis OR 2.22 [1.33 - 3.74], p=0.002 and associated symptoms p<0.001. Findings for ADHD were validated in two large (n=656, n=348), independent mother-child cohorts via blood metabolome modelling. Objective metabolite scores, assessed at five timepoints in mothers and children in two independent mother-child cohorts, indicated that the strongest association with ADHD was during early-to mid-pregnancy. These results provide evidence for targeted prenatal dietary interventions to prevent neurodevelopmental disorders in children.

5.
Eur Rev Med Pharmacol Sci ; 28(4): 1541-1553, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38436187

RESUMO

OBJECTIVE: In recent years, Helicobacter pylori (H. pylori) has been increasingly associated with extra-digestive manifestations, including scleroderma, rheumatism, and blood system diseases. Iron deficiency anemia (IDA) is a common chronic disease worldwide, with an insidious onset, but as the disease progresses, it will eventually seriously affect the quality of life of patients. The aim of our study was to investigate the relationship between H. pylori infection, iron deficiency (ID), and IDA, and to identify potential serological markers. PATIENTS AND METHODS: We conducted a cross-sectional study of 998 individuals who had regular physical examinations at Beijing Shijitan Hospital from January 2021 to March 2022. We detected H. pylori infection by the 13C breath test, and recorded the patient's serum iron, ferritin, transferrin saturation, blood count, etc. We assessed the association between IDA and H. pylori infection and related serum markers using logistic regression and multiple linear regression. Afterward, we analyzed the correlation between sex and potential serum biomarkers. RESULTS: Among all study participants, 57.5% of patients had H. pylori and 42.5% did not have H. pylori. ID and IDA were significantly associated with H. pylori infection in women (p=0.031). This association persisted after further adjustment for sex, metabolic variables, liver function, and kidney function. Fasting blood glucose, triglycerides, and uric acid may be associated with IDA. CONCLUSIONS: In women, H. pylori infection is associated with ID and IDA. The relationship between H. pylori and IDA may be mediated by glycometabolism, lipid metabolism, and uric acid metabolism.


Assuntos
Anemia Ferropriva , Infecções por Helicobacter , Helicobacter pylori , Deficiências de Ferro , Humanos , Feminino , Anemia Ferropriva/epidemiologia , Infecções por Helicobacter/complicações , Infecções por Helicobacter/epidemiologia , Estudos Transversais , Qualidade de Vida , Ácido Úrico
6.
Fertil Steril ; 2024 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-38316209

RESUMO

OBJECTIVE: To estimate the effect of platinum-based chemotherapy on live birth (LB) and infertility after cancer, in order to address a lack of treatment-specific fertility risks for female survivors of adolescent and young adult cancer, which limits counseling on fertility preservation decisions. DESIGN: Retrospective cohort study. SETTING: US administrative database. PATIENTS: We identified incident breast, colorectal, and ovarian cancer cases in females aged 15-39 years who received platinum-based chemotherapy or no chemotherapy and matched them to females without cancer. INTERVENTION: Platinum-based chemotherapy. MAIN OUTCOME MEASURES: We estimated the effect of chemotherapy on the incidence of LB and infertility after cancer, overall, and after accounting for competing events (recurrence, death, and sterilizing surgeries). RESULTS: There were 1,287 survivors in the chemotherapy group, 3,192 in the no chemotherapy group, and 34,147 women in the no cancer group, with a mean age of 33 years. Accounting for competing events, the overall 5-year LB incidence was lower in the chemotherapy group (3.9%) vs. the no chemotherapy group (6.4%). Adjusted relative risks vs. no chemotherapy and no cancer groups were 0.61 (95% confidence interval [CI] 0.42-0.82) and 0.70 (95% CI 0.51-0.93), respectively. The overall 5-year infertility incidence was similar in the chemotherapy group (21.8%) compared with the no chemotherapy group (20.7%). The adjusted relative risks vs. no chemotherapy and no cancer groups were 1.05 (95% CI 0.97-1.15) and 1.42 (95% CI 1.31-1.53), respectively. CONCLUSIONS: Cancer survivors treated with platinum-based chemotherapy experienced modestly increased adverse fertility outcomes. The estimated effects of platinum-based chemotherapy were affected by competing events, suggesting the importance of this analytic approach for interpretations that ultimately inform clinical fertility preservation decisions.

7.
Implement Sci ; 19(1): 14, 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38365808

RESUMO

BACKGROUND: A myriad of federal, state, and organizational policies are designed to improve access to evidence-based healthcare, but the impact of these policies likely varies due to contextual determinants of, reinterpretations of, and poor compliance with policy requirements throughout implementation. Strategies enhancing implementation and compliance with policy intent can improve population health. Critically assessing the multi-level environments where health policies and their related health services are implemented is essential to designing effective policy-level implementation strategies. California passed a 2019 health insurance benefit mandate requiring coverage of fertility preservation services for individuals at risk of infertility due to medical treatments, in order to improve access to services that are otherwise cost prohibitive. Our objective was to document and understand the multi-level environment, relationships, and activities involved in using state benefit mandates to facilitate patient access to fertility preservation services. METHODS: We conducted a mixed-methods study and used the policy-optimized exploration, preparation, implementation, and sustainment (EPIS) framework to analyze the implementation of California's fertility preservation benefit mandate (SB 600) at and between the state insurance regulator, insurer, and clinic levels. RESULTS: Seventeen publicly available fertility preservation benefit mandate-relevant documents were reviewed. Interviews were conducted with four insurers; 25 financial, administrative, and provider participants from 16 oncology and fertility clinics; three fertility pharmaceutical representatives; and two patient advocates. The mandate and insurance regulator guidance represented two "Big P" (system level) policies that gave rise to a host of "little p" (organizational) policies by and between the regulator, insurers, clinics, and patients. Many little p policies were bridging factors to support implementation across levels and fertility preservation service access. Characterizing the mandate's functions (i.e., policy goals) and forms (i.e., ways that policies were enacted) led to identification of (1) intended and unintended implementation, service, and patient outcomes, (2) implementation processes by level and EPIS phase, (3) actor-delineated key processes and heterogeneity among them, and (4) inner and outer context determinants that drove adaptations. CONCLUSIONS: Following the midstream and downstream implementation of a state health insurance benefit mandate, data generated will enable development of policy-level implementation strategies, evaluation of determinants and important outcomes of effective implementation, and design of future mandates to improve fit and fidelity.


Assuntos
Preservação da Fertilidade , Neoplasias , Humanos , Benefícios do Seguro , Política de Saúde , Política Organizacional , Neoplasias/terapia , Seguro Saúde
8.
Sci Rep ; 14(1): 4418, 2024 02 22.
Artigo em Inglês | MEDLINE | ID: mdl-38388636

RESUMO

Survey data from the Mayo Clinic Breast Disease Registry were used to assess fertility counseling and fertility preservation strategies in a modern cohort of young women with breast cancer. One hundred respondents were identified who were under age 50 at the time of breast cancer diagnosis and who expressed interest in future childbearing near the time of diagnosis and/or 1 year later. Ninety-three percent of the 81 respondents to the year one survey recalled fertility counseling prior to cancer treatment. Most who reported a high level of fertility concern declared that this concern had impacted their treatment decisions, often shortening their planned duration of endocrine therapy. Approximately half had taken steps to preserve future fertility, and a third had used a gonadotropin-releasing hormone agonist either alone or combined with another method (e.g., embryo or oocyte cryopreservation).


Assuntos
Neoplasias da Mama , Preservação da Fertilidade , Humanos , Feminino , Pessoa de Meia-Idade , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/terapia , Prevalência , Criopreservação , Fertilidade
9.
Zhonghua Zhong Liu Za Zhi ; 46(2): 140-145, 2024 Feb 23.
Artigo em Chinês | MEDLINE | ID: mdl-38418188

RESUMO

Objectives: This study aims to explore the clinical significance of lateral pelvic sentinel lymph node biopsy (SLNB) using indocyanine green (ICG) fluorescence navigation in laparoscopic lateral pelvic lymph node dissection (LLND) and evaluate the accuracy and feasibility of this technique to predict the status of lateral pelvic lymph nodes (LPLNs). Methods: The clinical and pathological characteristics, surgical outcomes, lymph node findings and perioperative complications of 16 rectal cancer patients who underwent SLNB using ICG fluorescence navigation in laparoscopic LLND in the Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College during April 2017 and October 2022 were retrospectively collected and analyzed. The patients did not receive preoperative neoadjuvant radiotherapy and presented with LPLNs but without LPLN enlargement (MRI showed the maximum short axes of the LPLNs were ≥5 mm and <10 mm at first visit). Results: All 16 patients were successfully performed SLNB using ICG fluorescence navigation in laparoscopic LLND. Three patients underwent bilateral LLND and 13 patients underwent unilateral LLND. The lateral pelvic sentinel lymph nodes (SLNs) were clearly fluorescent before dissection in 14 patients and the detection rate of SLNs for these patients was 87.5%. Lateral pelvic SLN metastasis was diagnosed in 2 patients and negative results were found in 12 patients by frozen pathological examinations. Among the 14 patients in whom lateral pelvic SLNs were detected, the dissected lateral pelvic non-SLNs were all negative. All dissected LPLNs were negative in two patients without fluorescent lateral pelvic SLNs. The specificity, sensitivity, negative predictive value, and accuracy was 85.7%, 100%, 100%, and 100%, respectively. Conclusions: This study indicates that lateral pelvic SLNB using ICG fluorescence navigation shows promise as a safe and feasible procedure with good accuracy. This technique may replace preventive LLND for locally advanced lower rectal cancer.


Assuntos
Laparoscopia , Neoplasias Retais , Linfonodo Sentinela , Humanos , Biópsia de Linfonodo Sentinela/métodos , Verde de Indocianina , Relevância Clínica , Estudos Retrospectivos , Excisão de Linfonodo , Linfonodo Sentinela/diagnóstico por imagem , Linfonodo Sentinela/cirurgia , Linfonodo Sentinela/patologia , Corantes , Linfonodos/diagnóstico por imagem , Linfonodos/cirurgia , Linfonodos/patologia , Laparoscopia/métodos , Neoplasias Retais/diagnóstico por imagem , Neoplasias Retais/cirurgia , Neoplasias Retais/patologia
10.
Metabolomics ; 20(1): 16, 2024 Jan 24.
Artigo em Inglês | MEDLINE | ID: mdl-38267770

RESUMO

INTRODUCTION: Meta-analyses across diverse independent studies provide improved confidence in results. However, within the context of metabolomic epidemiology, meta-analysis investigations are complicated by differences in study design, data acquisition, and other factors that may impact reproducibility. OBJECTIVE: The objective of this study was to identify maternal blood metabolites during pregnancy (> 24 gestational weeks) related to offspring body mass index (BMI) at age two years through a meta-analysis framework. METHODS: We used adjusted linear regression summary statistics from three cohorts (total N = 1012 mother-child pairs) participating in the NIH Environmental influences on Child Health Outcomes (ECHO) Program. We applied a random-effects meta-analysis framework to regression results and adjusted by false discovery rate (FDR) using the Benjamini-Hochberg procedure. RESULTS: Only 20 metabolites were detected in all three cohorts, with an additional 127 metabolites detected in two of three cohorts. Of these 147, 6 maternal metabolites were nominally associated (P < 0.05) with offspring BMI z-scores at age 2 years in a meta-analytic framework including at least two studies: arabinose (Coefmeta = 0.40 [95% CI 0.10,0.70], Pmeta = 9.7 × 10-3), guanidinoacetate (Coefmeta = - 0.28 [- 0.54, - 0.02], Pmeta = 0.033), 3-ureidopropionate (Coefmeta = 0.22 [0.017,0.41], Pmeta = 0.033), 1-methylhistidine (Coefmeta = - 0.18 [- 0.33, - 0.04], Pmeta = 0.011), serine (Coefmeta = - 0.18 [- 0.36, - 0.01], Pmeta = 0.034), and lysine (Coefmeta = - 0.16 [- 0.32, - 0.01], Pmeta = 0.044). No associations were robust to multiple testing correction. CONCLUSIONS: Despite including three cohorts with large sample sizes (N > 100), we failed to identify significant metabolite associations after FDR correction. Our investigation demonstrates difficulties in applying epidemiological meta-analysis to clinical metabolomics, emphasizes challenges to reproducibility, and highlights the need for standardized best practices in metabolomic epidemiology.


Assuntos
Lisina , Metabolômica , Criança , Feminino , Gravidez , Humanos , Pré-Escolar , Índice de Massa Corporal , Reprodutibilidade dos Testes , Modelos Lineares
11.
Cell Genom ; 4(1): 100464, 2024 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-38216281

RESUMO

Non-invasively evaluating gene expression products in human pre-implantation embryos remains a significant challenge. Here, we develop a non-invasive method for comprehensive characterization of the extracellular RNAs (exRNAs) in a single droplet of spent media that was used to culture human in vitro fertilization embryos. We generate the temporal extracellular transcriptome atlas (TETA) of human pre-implantation development. TETA consists of 245 exRNA sequencing datasets for five developmental stages. These data reveal approximately 4,000 exRNAs at each stage. The exRNAs of the developmentally arrested embryos are enriched with the genes involved in negative regulation of the cell cycle, revealing an exRNA signature of developmental arrest. Furthermore, a machine-learning model can approximate the morphology-based rating of embryo quality based on the exRNA levels. These data reveal the widespread presence of coding gene-derived exRNAs at every stage of human pre-implantation development, and these exRNAs provide rich information on the physiology of the embryo.


Assuntos
Desenvolvimento Embrionário , Transcriptoma , Humanos , Transcriptoma/genética , Desenvolvimento Embrionário/genética , RNA/genética , Fertilização In Vitro , Embrião de Mamíferos
12.
Cancer ; 130(3): 344-355, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-37962199

RESUMO

Fertility is a top concern for many survivors of cancer diagnosed as children, adolescents and young adults (CAYA). Fertility preservation (FP) treatments are effective, evidence-based interventions to support their family building goals. Fertility discussions are a part of quality oncology care throughout the cancer care continuum. For nearly 2 decades, clinical guidelines recommend counseling patients about the possibility of infertility promptly at diagnosis and offering FP options and referrals as indicated. Multiple guidelines now recommend post-treatment counseling. Infertility risks differ by cancer treatments and age, rendering risk stratification a central part of FP care. To support FP decision-making, online tools for female risk estimation are available. At diagnosis, females can engage in mature oocyte/embryo cryopreservation, ovarian tissue cryopreservation, ovarian suppression with GnRH agonists, in vitro oocyte maturation, and/or conservative management for gynecologic cancers. Post-treatment, several populations may consider undergoing oocyte/embryo cryopreservation. Male survivors' standard of care FP treatments center on sperm cryopreservation before cancer treatment and do not have the same post-treatment indication for additional gamete cryopreservation. In practice, FP care requires systemized processes to routinely screen for FP needs, bridge oncology referrals to fertility, offer timely fertility consultations and access to FP treatments, and support financial navigation. Sixteen US states passed laws requiring health insurers to provide insurance benefits for FP treatments, but variation among the laws and downstream implementation are barriers to accessing FP treatments. To preserve the reproductive futures of CAYA survivors, research is needed to improve risk stratification, FP options, and delivery of FP care.


Assuntos
Preservação da Fertilidade , Neoplasias dos Genitais Femininos , Infertilidade , Neoplasias , Criança , Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Sêmen , Criopreservação , Neoplasias/complicações , Neoplasias/terapia , Neoplasias/psicologia , Infertilidade/etiologia , Infertilidade/prevenção & controle
13.
Faraday Discuss ; 249(0): 229-242, 2024 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-37814783

RESUMO

Phase transitions of water and its mixtures are of fundamental importance in physical chemistry, the pharmaceutical industry, materials sciences, and atmospheric sciences. However, current understanding remains elusive to explain relevant observations, especially at the nanoscale. Here, by using molecular dynamics simulations, we investigate the dissolution of sodium chloride (NaCl) nanocrystals with volume-equivalent diameters from 0.51 to 1.75 nm. Our results show that the dissolution of NaCl in aqueous nanodroplets show a strong size dependence, and its solubility can be predicted by the Ostwald-Freundlich equation and Gibbs-Duhem equation after considering a size-dependent solid-liquid surface tension. We find that the structure of dissolved ions in the saturated aqueous nanodropplet resembles the structure of a molten NaCl nanoparticle. With decreasing nanodroplet size, this similarity grows and the average potential energy of NaCl in solution, the molten phase and the crystal phase converges.

14.
Allergy ; 79(2): 404-418, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38014461

RESUMO

BACKGROUND: While dysregulated sphingolipid metabolism has been associated with risk of childhood asthma, the specific sphingolipid classes and/or mechanisms driving this relationship remain unclear. We aimed to understand the multifaceted role between sphingolipids and other established asthma risk factors that complicate this relationship. METHODS: We performed targeted LC-MS/MS-based quantification of 77 sphingolipids in plasma from 997 children aged 6 years from two independent cohorts (VDAART and COPSAC2010 ). We examined associations of circulatory sphingolipids with childhood asthma, lung function, and three asthma risk factors: functional SNPs in ORMDL3, low vitamin D levels, and reduced gut microbial maturity. Given racial differences between these cohorts, association analyses were performed separately and then meta-analyzed together. RESULTS: We observed elevations in circulatory sphingolipids with asthma phenotypes and risk factors; however, there were differential associations of sphingolipid classes with clinical outcomes and/or risk factors. While elevations from metabolites involved in ceramide recycling and catabolic pathways were associated with asthma and worse lung function [meta p-value range: 1.863E-04 to 2.24E-3], increased ceramide levels were associated with asthma risk factors [meta p-value range: 7.75E-5 to .013], but not asthma. Further investigation identified that some ceramides acted as mediators while some interacted with risk factors in the associations with asthma outcomes. CONCLUSION: This study demonstrates the differential role that sphingolipid subclasses may play in asthma and its risk factors. While overall elevations in sphingolipids appeared to be deleterious overall; elevations in ceramides were uniquely associated with increases in asthma risk factors only; while elevations in asthma phenotypes were associated with recycling sphingolipids. Modification of asthma risk factors may play an important role in regulating sphingolipid homeostasis via ceramides to affect asthma. Further function work may validate the observed associations.


Assuntos
Asma , Esfingolipídeos , Criança , Humanos , Esfingolipídeos/metabolismo , Cromatografia Líquida , Espectrometria de Massas em Tandem , Ceramidas/metabolismo , Asma/etiologia , Asma/genética , Fatores de Risco
15.
Rev Sci Instrum ; 94(12)2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-38038637

RESUMO

A transportable, compact, accelerator-based neutron source is under development at Xian Jiaotong University. An electrostatic low energy beam transport (LEBT) structure with a double Einzel-lens setup was adopted due to its short length and low power consumption. It can transport a pulsed proton beam to the radio frequency quadrupole with a required beam current of 15 mA and an energy of 30 keV. We performed detailed structure optimization and beam tracking to achieve beam matching and small emittance growth. In addition, the fast chopper, beam steering, and diagnostic devices are integrated into the LEBT. The fabrication and assembly of the proton injector have been completed, and beam commissioning was carried out to measure the beam current and Twiss parameters. The design strategy, beam simulation, and experimental results are presented and discussed in this paper.

16.
ESMO Open ; 8(6): 102194, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38100934

RESUMO

BACKGROUND: Treatment regimens for recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) after failure of platinum-based chemotherapy have been illustrated with limited efficacy. PATIENTS AND METHODS: Here, we report a single-arm, multicenter, phase Ⅱ study of R/M HNSCC patients treated with a programmed cell death-1 antibody penpulimab (200 mg) and anlotinib (12 mg) after failing at least one line of platinum-based chemotherapy. RESULTS: Of 38 patients in total, 13 (34.21%) patients achieved partial response and 16 (42.11%) patients achieved stable disease. After a median follow-up of 7.06 months (range: 4.14-15.70 months), the independent review committee-assessed objective response rate was 34.21%, the disease control rate was 76.32%. The median progression-free survival was 8.35 months (95% confidence interval 5.95-13.11 months). Twelve patients died and the median overall survival (OS) was not reached. The 12-month OS rate was 59.76%. Grade 3/4 treatment-related adverse events occurred in 47.37% of the patients. CONCLUSION: Penpulimab combined with anlotinib demonstrated promising efficacy and manageable safety in R/M HNSCC patients after failure of platinum-based chemotherapy.


Assuntos
Neoplasias de Cabeça e Pescoço , Platina , Humanos , Carcinoma de Células Escamosas de Cabeça e Pescoço/tratamento farmacológico , Neoplasias de Cabeça e Pescoço/tratamento farmacológico
17.
bioRxiv ; 2023 Oct 24.
Artigo em Inglês | MEDLINE | ID: mdl-37904959

RESUMO

Biological aging is a multifactorial process involving complex interactions of cellular and biochemical processes that is reflected in omic profiles. Using common clinical laboratory measures in ~30,000 individuals from the MGB-Biobank, we developed a robust, predictive biological aging phenotype, EMRAge, that balances clinical biomarkers with overall mortality risk and can be broadly recapitulated across EMRs. We then applied elastic-net regression to model EMRAge with DNA-methylation (DNAm) and multiple omics, generating DNAmEMRAge and OMICmAge, respectively. Both biomarkers demonstrated strong associations with chronic diseases and mortality that outperform current biomarkers across our discovery (MGB-ABC, n=3,451) and validation (TruDiagnostic, n=12,666) cohorts. Through the use of epigenetic biomarker proxies, OMICmAge has the unique advantage of expanding the predictive search space to include epigenomic, proteomic, metabolomic, and clinical data while distilling this in a measure with DNAm alone, providing opportunities to identify clinically-relevant interconnections central to the aging process.

18.
Res Sq ; 2023 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-37886467

RESUMO

Background: A myriad of federal, state, and organizational policies are designed to improve access to evidence-based healthcare, but the impact of these policies likely varies due to contextual determinants, re-interpretations of and poor compliance with policy requirements throughout implementation. Strategies enhancing implementation and compliance with policy intent can improve population health. Critically assessing the multi-level environments where health policies and their related health services are implemented is essential to designing effective policy-level implementation strategies. California passed a 2019 health insurance benefit mandate requiring coverage of fertility preservation (FP) services for individuals at risk of infertility due to medical treatments to improve access to services that are otherwise cost-prohibitive. Our objective was to document and understand multi-level environment, relationships, and activities involved in using state benefit mandates to facilitate patient access to FP services. Methods: We conducted a mixed-methods study and used the policy-optimized Exploration, Preparation, Implementation, Sustainment (EPIS) framework to analyze implementation of California's fertility preservation benefit mandate (SB 600) at and between the state insurance regulator, insurer and clinic levels. Results: Seventeen publicly available FP benefit mandate-relevant documents were reviewed, and four insurers, 25 financial, administrative and provider participants from 16 oncology and fertility clinics, three fertility pharmaceutical representatives, and two patient advocates were interviewed. The mandate and insurance regulator guidance represented two "Big P" (system level) policies that gave rise to a host of "little p" (organizational) policies by and between the regulator, insurers, clinics, and patients. Many little p policies were bridging factors to support implementation across levels and FP service access. Characterizing the mandate's functions (i.e., policy goals) and forms (i.e., ways that policies were enacted) led to identification of (1) intended and unintended implementation, service, and patient outcomes; (2) implementation processes by level, EPIS phase; (3) actor-delineated key processes and heterogeneity among them; and (4) inner and outer context determinants that drove adaptations. Conclusions: Following the mid- and down-stream implementation of a state health insurance benefit mandate, data generated will enable development of policy level implementation strategies, evaluation of determinants and important outcomes of effective implementation, and design of future mandates to improve fit and fidelity.

19.
Artigo em Chinês | MEDLINE | ID: mdl-37805741

RESUMO

Objective: To explore the clinical effects of plantar split-thickness skin grafts in repairing the deep burn wounds in the back and buttocks. Methods: A retrospective observational study was conducted. From January 2011 to February 2022, 98 patients with deep burn who met the inclusion criteria were admitted to the 910th Hospital of Joint Service Support Unit of PLA, including 64 males and 34 females, aged 17 to 78 years, with total burn areas of 35%-95% total body surface area (TBSA). The area of full-thickness burns in the back and buttocks ranged from 5% to 17% TBSA and the wounds were repaired only using stamp-shaped split-thickness skin grafts from plantar areas of both feet or combined with Meek microskin grafts or stamp-shaped skin grafts from other sites. According to the times of skin graft harvesting from both soles, these patients were divided into one-harvesting group (29 cases), two-harvesting group (38 cases), three-harvesting group (21 cases), and four-harvesting group (10 cases). The area of skin grafts harvested each time from both soles, the healing time of donor sites after each skin graft harvesting, and the survival rate of plantar skin graft in recipient site at 7 days after each skin graft harvesting in 98 patients, the interval between two adjacent skin graft harvesting in 69 patients with skin grafts harvested twice or more, as well as the healing time of donor site and survival rate of skin graft in recipient site after the last skin graft harvesting from both soles of patients in the 4 groups were recorded. The patients were followed up to observe the appearance, texture, and scar in recipient site of plantar skin grafts as well as the scar and function in plantar donor sites. Data were statistically analyzed with one-way analysis of variance, Kruskal-Wallis test, and chi-square test. Results: In the 98 patients, the area of skin graft was 2.0%-4.5% ((3.4±0.6)%) TBSA harvested each time from both soles, the healing time of donor site after each skin graft harvesting was 7-10 (7.8±1.1) d, and the survival rate of plantar skin graft in recipient site at 7 days after each skin graft harvesting was 93% (92%, 95%). The interval between two adjacent skin graft harvesting in the 69 patients was 7-38 (11.2±0.5) d. The healing time of donor site and survival rate of skin graft in recipient site after the last skin graft harvesting from both soles of patients in the 4 groups showed no statistically significant differences (P>0.05). A total of 88 patients were followed up for 3 months to 5 years, the appearance in recipient site of plantar skin graft was smooth, the texture was firm, the scar hyperplasia was mild, and the area was compressive- and wear-resistant. Among them, the plantar donor site recovered well in 85 patients, without obvious scar hyperplasia and only 3 patients had small area of scar hyperplasia in the non-weight-bearing areas which did not affect walking or wearing shoes or socks. Ten patients were lost in the follow up after discharge. Conclusions: Stamp-shaped split-thickness skin grafts can be repeatedly harvested from both soles of patient to repair the deep burn wounds in the back and buttocks, with high survival rate of skin grafts, thus can reduce the burden of other donor sites. Moreover, the skin grafts have good wear-resistance and pressure-resistance, without affecting postoperative normal walk.


Assuntos
Queimaduras , Transplante de Pele , Masculino , Feminino , Humanos , Cicatriz/cirurgia , Nádegas/cirurgia , Hiperplasia , Queimaduras/cirurgia , Resultado do Tratamento
20.
JAMA Netw Open ; 6(10): e2337245, 2023 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-37819662

RESUMO

Importance: Fertility is important to many survivors of adolescent and young adult (AYA) cancer, yet data on this population's fertility perceptions and their alignment with objective infertility risk are scant. Objective: To assess whether estimated treatment gonadotoxicity and posttreatment menstrual pattern are associated with higher infertility risk perception. Design, Setting, and Participants: This retrospective cohort study included female young adult survivors of cancer diagnosed between ages 15 and 39 years were recruited between March 25, 2015, and September 24, 2018, from 2 state cancer registries, social media, and clinician referrals to participate in a study of posttreatment ovarian function. Data analysis occurred between March 1 and September 1, 2022. Exposures: Participants reported their menstrual pattern. Estimated treatment gonadotoxicity was ascertained through medical record review. Main Outcomes and Measures: Participants reported infertility risk perception and were categorized as increased risk (feeling less fertile or unable to become pregnant) or no increased risk (feeling more or as fertile) compared with female individuals their age. Objective infertility risk was determined by estimated gonadotoxicity, menstrual pattern, and ovarian reserve testing of self-collected dried blood spots. Multivariable logistic regression identified factors associated with perceived infertility and underestimation or overestimation of infertility risk. Results: This study included 785 female participants with a mean (SD) age of 33.2 (4.8) years at enrollment and 25.9 (5.7) years at diagnosis. Most participants self-identified their race and ethnicity as White (585 [74.5%]) and non-Hispanic (628 [78.7%]). Most participants (483 [61.5%]) perceived a higher risk of infertility compared with female participants their age. Prior exposure to moderate- or high-gonadotoxicity treatments was associated with higher odds of perceiving increased infertility risk compared with exposure to low-gonadotoxicity treatments (adjusted odds ratio [AOR], 2.73 [95% CI, 1.87-3.97] and 15.39 [95% CI, 5.52-42.96], respectively). Amenorrhea and irregular cycles were associated with higher odds of perceiving increased infertility risk (AOR, 3.98 [95% CI, 2.13-7.41] and 1.69 [95% CI, 1.19-2.40], respectively). Perceived infertility risk had minimal agreement with objective risk (κ = 0.19). Multiparity (AOR, 4.17 [95% CI, 2.61-6.64]) was associated with increased odds of underestimation, while older age (AOR, 0.94 [95% CI, 0.89-0.98]), endocrine comorbidity (AOR, 0.35 [95% CI, 0.18-0.69]), and prior infertility (AOR, 0.16 [95% CI, 0.07-0.38]) were associated with lower odds of underestimation. Multiparity (AOR, 0.48 [95% CI, 0.27-0.86]), breast cancer (AOR, 0.38 [95% CI, 0.20-0.73]), and skin cancer (AOR, 0.24 [95% CI, 0.11-0.51]) were associated with lower odds of overestimation. Conclusions and Relevance: In this cohort study, survivors of AYA cancer had high rates of perceiving increased infertility risk but frequently overestimated or underestimated their risk. These findings suggest that counseling on infertility risk throughout survivorship may reduce misalignment between perceptions and actual risk, decrease fertility-related psychological distress, and inform family planning decisions.


Assuntos
Neoplasias da Mama , Sobreviventes de Câncer , Infertilidade , Gravidez , Humanos , Feminino , Adulto Jovem , Adolescente , Adulto , Estudos de Coortes , Estudos Retrospectivos , Sobreviventes de Câncer/psicologia , Fertilidade , Sobreviventes
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...