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1.
Blood ; 141(2): 168-179, 2023 01 12.
Artigo em Inglês | MEDLINE | ID: mdl-35981565

RESUMO

The efficacy and safety of rivipansel, a predominantly E-selectin antagonist, were studied in a phase 3, randomized, controlled trial for vaso-occlusive crisis (VOC) requiring hospitalization (RESET). A total of 345 subjects (204 adults and 141 children) were randomized and 320 were treated (162 with rivipansel, 158 with placebo) with an IV loading dose, followed by up to 14 additional 12-hourly maintenance doses of rivipansel or placebo, in addition to standard care. Rivipansel was similarly administered during subsequent VOCs in the Open-label Extension (OLE) study. In the full analysis population, the median time to readiness for discharge (TTRFD), the primary end point, was not different between rivipansel and placebo (-5.7 hours, P = .79; hazard ratio, 0.97), nor were differences seen in secondary end points of time to discharge (TTD), time to discontinuation of IV opioids (TTDIVO), and cumulative IV opioid use. Mean soluble E-selectin decreased 61% from baseline after the loading dose in the rivipansel group, while remaining unchanged in the placebo group. In a post hoc analysis, early rivipansel treatment within 26.4 hours of VOC pain onset (earliest quartile of time from VOC onset to treatment) reduced median TTRFD by 56.3 hours, reduced median TTD by 41.5 hours, and reduced median TTDIVO by 50.5 hours, compared with placebo (all P < .05). A similar subgroup analysis comparing OLE early-treatment with early-treatment RESET placebo showed a reduction in TTD of 23.1 hours (P = .062) and in TTDIVO of 30.1 hours (P = .087). Timing of rivipansel administration after pain onset may be critical to achieving accelerated resolution of acute VOC. Trial Registration: Clinicaltrials.gov, NCT02187003 (RESET), NCT02433158 (OLE).


Assuntos
Anemia Falciforme , Hemoglobinopatias , Compostos Orgânicos Voláteis , Adulto , Criança , Humanos , Selectina E/uso terapêutico , Anemia Falciforme/complicações , Anemia Falciforme/tratamento farmacológico , Compostos Orgânicos Voláteis/uso terapêutico , Dor/tratamento farmacológico , Dor/etiologia , Analgésicos Opioides/uso terapêutico , Método Duplo-Cego
2.
Water Res ; 209: 117967, 2021 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-34936976

RESUMO

Stormwater runoff typically contains significant quantities of metal contaminants that enter urban waterways over short durations and represent a potential risk to water quality. The origin of metals within the catchment and processes that occur over the storm can control the partitioning of metals between a range of different forms. Understanding the fraction of metals present in a form that is potentially bioavailable to aquatic organisms is useful for environmental risk assessment. To help provide this information, the forms and dynamics of metal contaminants in an urban system were assessed across a storm. Temporal patterns in the concentration of metals in dissolved and particulate (total suspended solids; TSS) forms were assessed from water samples, and diffusive gradients in thin-films (DGTs) were deployed to measure the DGT-labile time-integrated metal concentration. Results indicate that the concentrations of dissolved and TSS-associated metals increased during the storm, with the metals Al, Cd, Co, Cu, Pb and Zn representing the greatest concern relative to water quality guideline values (GVs). The portion of labile metal as measured by DGT devices indicated that during the storm a substantial fraction (∼98%) of metals were complexed and pose a lower risk of acute toxicity to aquatic organisms. Comparison of DGT results to GVs indicate that current GVs are likely quite conservative when assessing stormwater pollution risks with regards to metal contaminants. This study provides valuable insight into the forms and dynamics of metals in an urban system receiving stormwater inputs and assists with the development of improved approaches for the assessment of short-term, intermittent discharge events.

4.
Mol Phylogenet Evol ; 160: 107140, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33711446

RESUMO

Snubnose gobies (genus Pseudogobius: Gobionellinae) are ubiquitous to, and important components of, estuarine ecosystems of the Indo-west Pacific. These small benthic fishes occur in freshwater, brackish and marine habitats such as mangroves, sheltered tide pools and lowland streams, and represent a model group for understanding the biodiversity and biogeography of estuarine fauna. To develop the species-level framework required for a concurrent morphological taxonomic appraisal, we undertook thorough sampling around the extensive Australian coastline, referenced to international locations, as part of a molecular systematic review using both nuclear and mitochondrial markers. The results indicate that while there are currently eight recognised species, the true diversity is close to double this, with a hotspot of endemism located in Australia. Complicated patterns were observed in southern Australia owing to two differing zones of introgression/admixture. Key drivers of diversity in the group appear to include plate tectonics, latitude, and historic barriers under glacial maxima, where an interplay between ready dispersal and habitat specialisation has led to regional panmixia but frequent geographic compartmentalisation within past and present landscapes. The findings have significant implications for biodiversity conservation, coastal and estuarine development, the basic foundations of field ecology, and for applied use such as in biomonitoring.


Assuntos
Biodiversidade , Estuários , Peixes/classificação , Peixes/genética , Animais , Austrália , Filogeografia
5.
Lupus ; 30(4): 568-577, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33402037

RESUMO

OBJECTIVE: It has been reported that patients with antiphospholipid antibodies (aPL) and refractory migraine may experience symptomatic improvement with antithrombotic therapy, but this phenomenon has not been well studied. This study was undertaken to detail the response to trials of antithrombotic therapy in these patients. METHODS: This is a retrospective study of 75 patients with refractory migraine and aPL who were given a 2-4 week trial of aspirin, clopidogrel and/or anticoagulation. Major response was defined as 50-100% improvement in frequency and/or severity of migraine; minor response: 25-49% improvement; no response: <25% improvement. RESULTS: 66 patients were given a trial of aspirin: 47% responded (21% major); 60 patients were given a trial of clopidogrel: 83% responded (67% major); and 34 patients were given a trial of anticoagulation (usually apixaban): 94% responded (85% major). The response rate to any anti-thrombotic therapy was 89% (83% major). Many patients also noted improvement in non-headache symptoms. No patient experienced stroke. There was no major bleeding during any 2-4 week treatment trial and only 3 of 69 patients maintained on an antithrombotic regimen for a median follow up of 29.9 months (5-100) experienced major bleeding. CONCLUSIONS: There was a high rate of symptomatic response to antithrombotic therapy in this context and long-term follow up suggested an individualized symptom-derived antithrombotic regimen may be associated with a low bleeding risk. Our data support consideration of a 2-4 week trial of antithrombotic therapy, usually starting with antiplatelet therapy, in aPL-positive patients with refractory migraine, particularly if other treatment options have been exhausted. As a retrospective study, our data provide only Class IV level of evidence, but they suggest randomized controlled trials are warranted to validate these encouraging findings.


Assuntos
Anticorpos Antifosfolipídeos/sangue , Fibrinolíticos/uso terapêutico , Transtornos de Enxaqueca/tratamento farmacológico , Pirazóis/uso terapêutico , Piridonas/uso terapêutico , Adolescente , Adulto , Idoso , Síndrome Antifosfolipídica/complicações , Síndrome Antifosfolipídica/diagnóstico , Síndrome Antifosfolipídica/imunologia , Aspirina/administração & dosagem , Aspirina/uso terapêutico , Criança , Clopidogrel/administração & dosagem , Clopidogrel/uso terapêutico , Inibidores de Ciclo-Oxigenase/administração & dosagem , Inibidores de Ciclo-Oxigenase/uso terapêutico , Feminino , Fibrinolíticos/administração & dosagem , Hemorragia/induzido quimicamente , Hemorragia/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos de Enxaqueca/imunologia , Antagonistas do Receptor Purinérgico P2Y/administração & dosagem , Antagonistas do Receptor Purinérgico P2Y/uso terapêutico , Pirazóis/administração & dosagem , Piridonas/administração & dosagem , Estudos Retrospectivos , Índice de Gravidade de Doença , Acidente Vascular Cerebral/induzido quimicamente , Acidente Vascular Cerebral/epidemiologia , Resultado do Tratamento , Adulto Jovem
6.
Metabolites ; 10(1)2020 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-31935843

RESUMO

This exploratory study aims to investigate the health of sand flathead (Platycephalus bassensis) sampled from five sites in Port Phillip Bay, Australia using gas chromatography-mass spectrometry (GC-MS) metabolomics approaches. Three of the sites were the recipients of industrial, agricultural, and urban run-off and were considered urban sites, while the remaining two sites were remote from contaminant inputs, and hence classed as rural sites. Morphological parameters as well as polar and free fatty acid metabolites were used to investigate inter-site differences in fish health. Significant differences in liver somatic index (LSI) and metabolite abundance were observed between the urban and rural sites. Differences included higher LSI, an increased abundance of amino acids and energy metabolites, and reduced abundance of free fatty acids at the urban sites compared to the rural sites. These differences might be related to the additional energy requirements needed to cope with low-level contaminant exposure through energy demanding processes such as detoxification and antioxidant responses as well as differences in diet between the sites. In this study, we demonstrate that metabolomics approaches can offer a greater level of sensitivity compared to traditional parameters such as physiological parameters or biochemical markers of fish health, most of which showed no or little inter-site differences in the present study. Moreover, the metabolite responses are more informative than traditional biomarkers in terms of biological significance as disturbances in specific metabolic pathways can be identified.

7.
Environ Toxicol Chem ; 39(3): 595-603, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31751491

RESUMO

Per- and poly-fluoroalkyl substances (PFAS) are ubiquitously distributed throughout aquatic environments and can bioaccumulate in organisms. We examined dietary uptake and depuration of a mixture of 3 PFAS: perfluorooctanoic acid (PFOA; C8 HF15 O2 ), perfluorooctane sulfonate (PFOS; C8 HF17 SO3 ), and hexafluoropropylene oxide dimer acid (HPFO-DA; C6 HF11 O3 ; trade name GenX). Benthic fish (blue spot gobies, Pseudogobius sp.) were fed contaminated food (nominal dose 500 ng g-1 ) daily for a 21-d uptake period, followed by a 42-d depuration period. The compounds PFOA, linear-PFOS (linear PFOS), and total PFOS (sum of linear and branched PFOS) were detected in freeze-dried fish, whereas GenX was not, indicating either a lack of uptake or rapid elimination (<24 h). Depuration rates (d-1 ) were 0.150 (PFOA), 0.045 (linear-PFOS), and 0.042 (linear+branched-PFOS) with corresponding biological half-lives of 5.9, 15, and 16 d, respectively. The PFOS isomers were eliminated differently, resulting in enrichment of linear-PFOS (70-90%) throughout the depuration period. The present study is the first reported study of GenX dietary bioaccumulation potential in fish, and the first dietary study to investigate uptake and depuration of multiple PFASs simultaneously, allowing us to determine that whereas PFOA and PFOS accumulated as expected, GenX, administered in the same way, did not appear to bioaccumulate. Environ Toxicol Chem 2020;39:595-603. © 2019 SETAC.


Assuntos
Ácidos Alcanossulfônicos/metabolismo , Bioacumulação , Caprilatos/metabolismo , Peixes/metabolismo , Fluorocarbonos/metabolismo , Poluentes Químicos da Água/metabolismo , Animais , Cinética
8.
Chemosphere ; 228: 65-74, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31022621

RESUMO

Biomonitoring microplastics in freshwater ecosystems has been insufficient in comparison with its practice in marine environments. It is an important first step to understand microplastic uptake in organisms when assessing risk in natural freshwater habitats. We conducted microplastic biomonitoring within the Greater Melbourne Area; where the microplastic baseline pollution in freshwater organisms was largely unknown. A common noxious fish species, Gambusia holbrooki, was targeted. Individuals (n = 180) from nine wetlands were analyzed. Uptake pathway, size, weight and gender were examined in relation to microplastic uptake in the body (presumed uptake via gut) and head (presumed uptake via gills). On average, 19.4% of fish had microplastics present in their bodies with an abundance of 0.6 items per individual (items/ind) and 7.2% of fish had microplastics in their heads with an abundance of 0.1 items/ind. Polyester was the dominant plastic type and fibers were the most common shape. The amount of microplastics in Gambusia holbrooki in current study is relatively low in a global comparison. The bodies of fish contained more microplastics on average than heads, and the size of microplastics detected in heads were smaller than those found in bodies. Microplastic uptake was directly proportional to size and weight. Furthermore, female individuals showed a tendency to ingest more microplastics than males. Laboratory experiments under controlled conditions are suggested to further explore such relationships. Our findings are important to understanding the potential ecological risks posed by microplastics to organisms in freshwater environments and provide suitable methodologies to conduct biomonitoring in future investigations.


Assuntos
Ciprinodontiformes/metabolismo , Monitoramento Ambiental/métodos , Plásticos/farmacocinética , Áreas Alagadas , Animais , Austrália , Ecossistema , Feminino , Água Doce/química , Masculino , Fatores Sexuais , Distribuição Tecidual , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/farmacocinética
9.
Am J Hematol ; 94(4): 446-454, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30637784

RESUMO

We conducted a multicenter pilot investigation of the safety and feasibility of bone marrow transplantation (BMT) in adults with severe sickle cell disease (SCD) (NCT 01565616) using a reduced toxicity preparative regimen of busulfan (13.2 mg/kg), fludarabine (175 mg/m2 ) and thymoglobulin (6 mg/kg) and cyclosporine or tacrolimus and methotrexate for graft-vs-host disease (GVHD) prophylaxis. Twenty-two patients (median age 22 years; range 17-36) were enrolled at eight centers. Seventeen patients received marrow from an HLA-identical sibling donor and five patients received marrow from an 8/8 HLA-allele matched unrelated donor. Before BMT, patients had stroke, acute chest syndrome, recurrent pain events, were receiving regular red blood cell transfusions, or had an elevated tricuspid regurgitant jet (TRJ) velocity, which fulfilled eligibility criteria. Four patients developed grades II-III acute GVHD (18%) and six developed chronic GVHD (27%) that was moderate in two and severe in one patient. One patient died of intracranial hemorrhage and one of GVHD. Nineteen patients had stable donor chimerism, 1-year post-transplant. One patient who developed secondary graft failure survives disease-free after a second BMT. The one-year overall survival and event-free survival (EFS) are 91% (95% CI 68%-98%) and 86% (95% CI, 63%-95%), respectively, and 3-year EFS is 82%. Statistically significant improvements in the pain interference and physical function domains of health-related quality of life were observed. The study satisfied the primary endpoint of 1-year EFS ≥70%. This regimen is being studied in a prospective clinical trial comparing HLA-matched donor BMT with standard of care in adults with severe SCD (NCT02766465).


Assuntos
Anemia Falciforme , Transplante de Medula Óssea , Doença Enxerto-Hospedeiro , Doadores não Relacionados , Doença Aguda , Adolescente , Adulto , Aloenxertos , Anemia Falciforme/sangue , Anemia Falciforme/mortalidade , Anemia Falciforme/terapia , Intervalo Livre de Doença , Feminino , Doença Enxerto-Hospedeiro/sangue , Doença Enxerto-Hospedeiro/mortalidade , Doença Enxerto-Hospedeiro/terapia , Teste de Histocompatibilidade , Humanos , Masculino , Estudos Prospectivos , Taxa de Sobrevida , Fatores de Tempo , Adulto Jovem
10.
Ann Intern Med ; 169(9): 619-627, 2018 11 06.
Artigo em Inglês | MEDLINE | ID: mdl-30383109

RESUMO

Background: Although sickle cell trait (SCT) is largely a benign carrier state, it may increase risk for certain clinical outcomes. Purpose: To evaluate associations between SCT and clinical outcomes in children and adults. Data Sources: English-language searches of PubMed, CINAHL, the Cochrane Library, Current Contents Connect, Scopus, and Embase (1 January 1970 to 30 June 2018) and bibliographies of review articles. Study Selection: Observational controlled studies (published in English) in children or adults that examined an association between SCT and any of 24 clinical outcomes specified a priori in the following 6 categories: exertion-related injury; renal, vascular, pediatric, and surgery- or trauma-related outcomes; and overall mortality. Data Extraction: A single reviewer extracted study data, which was checked by another; 2 reviewers independently assessed study quality; and strength of evidence was assessed by consensus. Data Synthesis: Of 7083 screened studies, 41 met inclusion criteria. High-strength evidence supported a positive association between SCT and risk for pulmonary embolism, proteinuria, and chronic kidney disease. Moderate-strength evidence supported a positive association between SCT and exertional rhabdomyolysis and a null association between SCT and deep venous thrombosis, heart failure or cardiomyopathy, stroke, and pediatric height or weight. Absolute risks for thromboembolism and rhabdomyolysis were small. For the remaining 15 clinical outcomes, data were insufficient or strength of evidence was low. Limitation: Publication bias was possible, and high-quality evidence was scant. Conclusion: Sickle cell trait is a risk factor for a few adverse health outcomes, such as pulmonary embolism, kidney disease, and exertional rhabdomyolysis, but does not seem to be associated with such complications as heart failure and stroke. Insufficient data or low-strength evidence exists for most speculated complications of SCT. Primary Funding Source: National Human Genome Research Institute.


Assuntos
Traço Falciforme/complicações , Adulto , Estatura , Peso Corporal , Doenças Cardiovasculares/complicações , Criança , Humanos , Complicações Pós-Operatórias , Proteinúria/complicações , Insuficiência Renal Crônica/complicações , Rabdomiólise/complicações , Fatores de Risco , Ferimentos e Lesões/complicações
11.
J Fish Biol ; 93(2): 428-431, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29971763

RESUMO

This is the first report of intersex in a lutjanid species, the goldband snapper Pristipomoides multidens, in which the gonads of a male fish contain multifocal oocytes scattered among testicular tissue. The incidence rate of intersex was low (<1.0%), with oocytes observed in the testes of only two of 206 male fish examined. The capacity for P. multidens to develop an intersex condition suggests that future monitoring of this species should include histological analysis of gonads.


Assuntos
Transtornos do Desenvolvimento Sexual/patologia , Oócitos , Perciformes/anatomia & histologia , Testículo/citologia , Animais , Feminino , Gônadas , Masculino
12.
J Clin Transl Sci ; 2(5): 334-342, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30828476

RESUMO

INTRODUCTION: A growing population of adults living with severe, chronic childhood-onset health conditions has created a need for specialized health care delivered by providers who have expertise both in adult medicine and in those conditions. Optimal care of these patients requires systematic approaches to healthcare transition (HCT). Guidelines for HCT exist, but gaps in care occur, and there are limited data on outcomes of HCT processes. METHODS: The Single Disease Workgroup of the Lifespan Domain Task Force of the National Center for Advancing Translational Sciences Clinical and Translational Science Award programs convened a group to review the current state of HCT and to identify gaps in research and practice. Using cystic fibrosis and sickle cell disease as models, key themes were developed. A literature search identified general and disease-specific articles. We summarized key findings. RESULTS: We identified literature characterizing patient, parent and healthcare provider perspectives, recommendations for transition care, and barriers to effective transition. CONCLUSIONS: With increased survival of patients with severe childhood onset diseases, ongoing study of effective transition practices is essential as survival increases for severe childhood onset diseases. We propose pragmatic methods to enhance transition research to improve health and key outcomes.

13.
MMWR Morb Mortal Wkly Rep ; 66(46): 1269-1271, 2017 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-29166365

RESUMO

Approximately 100,000 Americans have sickle cell disease (SCD), a group of recessively inherited red blood cell disorders characterized by abnormal hemoglobin, called hemoglobin S or sickle hemoglobin, in the red blood cells. Persons with hemoglobin SS or hemoglobin Sß0 thalassemia, also known as sickle cell anemia (SCA), have the most severe form of SCD. Hemoglobin SC disease and hemoglobin Sß+ thalassemia are other common forms of SCD. Red blood cells that contain sickle hemoglobin are inflexible and can stick to vessel walls, causing a blockage that slows or stops blood flow. When this happens, oxygen cannot reach nearby tissues, leading to attacks of sudden, severe pain, called pain crises, which are the clinical hallmark of SCD. The red cell sickling and poor oxygen delivery can also cause damage to the brain, spleen, eyes, lungs, liver, and multiple other organs and organ systems. These chronic complications can lead to increased morbidity, early mortality, or both. Tremendous strides in treating and preventing the complications of SCD have extended life expectancy. Now, nearly 95% of persons born with SCD in the United States reach age 18 years (1); however, adults with the most severe forms of SCD have a life span that is 20-30 years shorter than that of persons without SCD (2).


Assuntos
Anemia Falciforme/terapia , Qualidade de Vida , Adolescente , Adulto , Centers for Disease Control and Prevention, U.S. , Criança , Pré-Escolar , Serviços de Saúde Comunitária/organização & administração , Continuidade da Assistência ao Paciente/organização & administração , Política de Saúde , Humanos , Pediatria/organização & administração , Prática de Saúde Pública , Estados Unidos , Adulto Jovem
14.
Health Qual Life Outcomes ; 15(1): 117, 2017 Jun 02.
Artigo em Inglês | MEDLINE | ID: mdl-28577358

RESUMO

BACKGROUND: Sickle Cell Disease (SCD) causes profound suffering and decrements in daily functioning. Demand is growing for valid and reliable measures to systematically document these effects, particularly in adults. The Adult Sickle Cell Quality of Life Measurement System, ASCQ-Me℠, was developed for this purpose. ASCQ-Me℠ is one of four measurement systems housed within the Person-Centered Assessment Resource (PCAR), funded by the National Institutes of Health, to support clinical research. To help users select the best of these measures for adults with SCD, we evaluated and compared two PCAR systems: one designed to be "universally applicable" (the Patient-Reported Outcome Measurement Information System, PROMIS®) and one designed specifically for SCD (ASCQ-Me℠). METHODS: Respondents to PROMIS and ASCQ-Me questions were 490 adults with SCD from seven geographically-disbursed clinics within the US. Data were collected for six ASCQ-Me measures (Emotional Impact, Sleep Impact, Social Impact, Stiffness Impact, Pain Impact, SCD Pain Episode Frequency and Severity) and ten PROMIS measures (Pain Impact, Pain Behavior, Physical Functioning, Anxiety, Depression, Fatigue, Satisfaction with Discretionary Social Activities, Satisfaction with Social Roles, Sleep Disturbance, and Sleep-Related Impairment). Statistical analyses, including analysis of variance and multiple linear regression, were conducted to determine the sensitivity of measures to SCD severity. SCD severity was assessed via a checklist of associated treatments and conditions. RESULTS: For those with the most severe SCD, PROMIS scores showed worse health compared to the general population for nine of ten health domains: the magnitude of the difference ranged 0.5 to 1.1 standard deviation units. The PROMIS domains most severely affected were Physical Functioning and Pain (Impact and Behavior). Significant differences by tertile of the SCD-MHC were shown for most PROMIS short forms and all ASCQ-Me short and fixed forms. In most models, ASCQ-Me measures explained statistically significant unique variance in SCD-MHC scores complementary to that explained by corresponding PROMIS measures. CONCLUSIONS: Study results supported the validity of both PROMIS and ASCQ-Me measures for use in adults with SCD. Compared to comparable PROMIS scores, most ASCQ-Me scores were better predictors of SCD disease severity, as measured by a medical history checklist. The clinical implications of these results require further investigation.


Assuntos
Anemia Falciforme/psicologia , Qualidade de Vida , Inquéritos e Questionários/normas , Adulto , Depressão/psicologia , Fadiga/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/psicologia , Reprodutibilidade dos Testes , Índice de Gravidade de Doença , Adulto Jovem
15.
Mar Pollut Bull ; 119(1): 211-219, 2017 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-28392090

RESUMO

Hepatic gene expression and liver histology were examined in sand flathead (Platycephalus bassensis) from six locations in Port Phillip Bay, Victoria, Australia. Four sets of genes including thyroid-related genes (D1, D2, TTR, TRα and TRß), metal metabolism-related genes (MT, MTF1, TF, Ferritin and FPN1), apoptosis-related genes (Diablo/SMAC1, Diablo/SMAC2 and CYP1A) and an endoplasmic reticulum stress biomarker gene (GRP78) were examined in female flathead using qRT-PCR. TRß and Diablo/SMAC1 gene expression was significantly up-regulated in fish from all polluted sites compared to those from a reference site. The transcripts of TRα and FPN1 were significantly higher in flathead from Corio Bay, while the hepatic mRNA of TTR and GRP78 were significantly lower in those fish. Positive correlations were observed between Diablo/SMAC1 and CYP1A, D2 and TRß, TRα and TRß. This study demonstrates that application of pathway-based biomarker genes and histopathology can provide comprehensive information on the impact of environmental pollutants on fish.


Assuntos
Peixes/metabolismo , Poluentes Químicos da Água/toxicidade , Animais , Baías , Biomarcadores , Feminino , Marcadores Genéticos , Vitória
16.
Blood Adv ; 1(27): 2703-2711, 2017 Dec 26.
Artigo em Inglês | MEDLINE | ID: mdl-29296922

RESUMO

Standard measures and common data elements for sickle cell disease (SCD) will improve the data quality and comparability necessary for cross-study analyses and the development of guidelines that support effective treatments and interventions. In 2014, the National Institutes of Health, National Heart, Lung, and Blood Institute (NHLBI) funded an Administrative Supplement to the PhenX Toolkit (consensus measures for Phenotypes and eXposures; https://www.phenxtoolkit.org/) to identify common measures to promote data comparability across SCD research. An 11-member Sickle Cell Disease Research and Scientific Panel provided guidance to the project, establishing a core collection of SCD-related measures and defining the scope of 2 specialty collections: (1) cardiovascular, pulmonary, and renal complications, and (2) neurology, quality-of-life, and health services. For each specialty collection, a working group of SCD experts selected high-priority measures using a consensus process that included scientific community input. The SCD measures were released into the Toolkit in August 2015. The 25 measures included in the core collection are recommended for use by all NHLBI-funded investigators performing human-subject SCD research. The 10 neurology, quality-of-life, and health services measures and 14 cardiovascular, pulmonary, and renal measures are recommended for use within these specialized research areas. For SCD and other researchers, PhenX measures will promote collaborations with clinicians and patients, facilitate cross-study analysis, accelerate translational research, and lead to greater understanding of SCD phenotypes and epigenetics. For clinicians, using PhenX measures will help elucidate the etiology, progression, and treatment of SCD, leading to improved patient care and quality of life.

17.
PLoS One ; 11(10): e0164257, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27711198

RESUMO

Port Phillip Bay, Australia, is a large semi-closed bay with over four million people living in its catchment basin. The Bay receives waters from the Yarra River which drains the city of Melbourne, as well as receiving the discharges of sewage treatment plants and petrochemical and agricultural chemicals. A 1999 study demonstrated that fish inhabiting Port Phillip Bay showed signs of effects related to pollutant exposure despite pollution management practices having been implemented for over a decade. To assess the current health status of the fish inhabiting the Bay, a follow up survey was conducted in 2015. A suite of biomarkers of exposure and effects were measured to determine the health status of Port Phillip Bay sand flathead (Platycephalus bassensis), namely ethoxyresorufin-O-deethylase (EROD) activity, polycyclic aromatic hydrocarbons (PAH) biliary metabolites, carboxylesterase activity (CbE) and DNA damage (8-oxo-dG). The reduction in EROD activity in the present study suggests a decline in the presence of EROD activity-inducing chemicals within the Bay since the 1990s. Fish collected in the most industrialised/urbanised sites did not display higher PAH metabolite levels than those in less developed areas of the Bay. Ratios of PAH biliary metabolite types were used to indicate PAH contaminant origin. Ratios indicated fish collected at Corio Bay and Hobsons Bay were subjected to increased low molecular weight hydrocarbons of petrogenic origin, likely attributed to the close proximity of these sites to oil refineries, compared to PAH biliary metabolites in fish from Geelong Arm and Mordialloc. Quantification of DNA damage indicated a localised effect of exposure to pollutants, with a 10-fold higher DNA damage level in fish sampled from the industrial site of Corio Bay relative to the less developed site of Sorrento. Overall, integration of biomarkers by multivariate analysis indicated that the health of fish collected in industrialised areas was compromised, with biologically significant biomarkers of effects (LSI, CF and DNA damage) discriminating between individuals collected in industrialised areas from observations made in fish collected in less developed areas of the Bay.


Assuntos
Biomarcadores/análise , Peixes/fisiologia , Hidrocarbonetos Policíclicos Aromáticos/toxicidade , Poluentes Químicos da Água/toxicidade , Animais , Austrália , Baías , Bile/efeitos dos fármacos , Bile/metabolismo , Citocromo P-450 CYP1A1/metabolismo , Dano ao DNA/efeitos dos fármacos , Exposição Ambiental , Monitoramento Ambiental , Proteínas de Peixes/metabolismo , Nível de Saúde , Fígado/efeitos dos fármacos , Fígado/metabolismo , Análise Multivariada , Hidrocarbonetos Policíclicos Aromáticos/metabolismo , Análise de Componente Principal , Urbanização , Poluentes Químicos da Água/metabolismo
18.
Medicine (Baltimore) ; 95(35): e4528, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27583862

RESUMO

Documented deficiencies in adult sickle cell disease (SCD) care include poor access to knowledgeable providers and inadequate treatment in emergency departments (EDs).The aim of this study was to create patient-reported outcome measures of the quality of ambulatory and ED care for adults with SCD.We developed and pilot tested SCD quality of care questions consistent with Consumer Assessments of Healthcare Providers and Systems surveys. We applied psychometric methods to develop scores and evaluate reliability and validity.The participants of this study were adults with SCD (n = 556)-63% aged 18 to 34 years; 64% female; 64% SCD-SS-at 7 US sites.The measure used was Adult Sickle Cell Quality of Life Measurement information system Quality of Care survey.Most participants (90%) reported at least 1 severe pain episode (pain intensity 7.8 ±â€Š2.3, 0-10 scale) in the past year. Most (81%) chose to manage pain at home rather than the ED, citing negative ED experiences (83%). Using factor analysis, we identified Access, Provider Interaction, and ED Care composites with reliable scores (Cronbach α 0.70-0.83) and construct validity (r = 0.32-0.83 correlations with global care ratings). Compared to general adult Consumer Assessments of Healthcare Providers and Systems scores, adults with SCD had worse care, adjusted for age, education, and general health.Results were consistent with other research reflecting deficiencies in ED care for adults with SCD. The Adult Sickle Cell Quality of Life Measurement Quality of Care measure is a useful self-report measure for documenting and tracking disparities in quality of SCD care.


Assuntos
Assistência Ambulatorial/normas , Anemia Falciforme/terapia , Serviço Hospitalar de Emergência/normas , Medidas de Resultados Relatados pelo Paciente , Qualidade da Assistência à Saúde , Adolescente , Adulto , Comunicação , Estudos Transversais , Análise Fatorial , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Relações Médico-Paciente , Projetos Piloto , Psicometria , Adulto Jovem
19.
Environ Toxicol Chem ; 35(9): 2209-14, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27552396

RESUMO

Fish, at all life stages, utilize olfactory information in the decision-making processes essential to survival. Olfaction is a sensitive sensory process, and toxicants within urban aquatic environments can have destructive or depreciating effects. In the present study, the authors exposed Galaxias maculatus, a native fish commonly found in urban waterways throughout southeastern Australia, to 1 of 5 ecologically relevant copper (II) chloride concentrations (<1 µg/L, 1 µg/L, 6 µg/L, 8 µg/L, 18 µg/L) for 16 h. After exposure, the authors tested the response of individual fish to 1 of 3 stimuli: a conspecific skin extract containing a stress-inducing alarm chemical odor, a conspecific odor, and distilled water as a control. Stress responses were quantified through behavioral assays. The authors found evidence for distinct changes in behavioral response with increasing copper concentration and a marked difference in response between control fish and fish exposed to the alarm chemical odor. Copper, even at relatively low concentrations, can have a significant effect on the stress response behavior shown by G. maculatus. Environ Toxicol Chem 2016;35:2209-2214. © 2016 SETAC.


Assuntos
Cobre/toxicidade , Percepção Olfatória/efeitos dos fármacos , Osmeriformes/fisiologia , Poluentes Químicos da Água/toxicidade , Animais , Austrália , Comportamento Animal/efeitos dos fármacos , Relação Dose-Resposta a Droga , Odorantes/análise
20.
Mol Genet Metab ; 118(4): 221-9, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27268406

RESUMO

UNLABELLED: Newborn screening (NBS) is intended to identify congenital conditions prior to the onset of symptoms in order to provide early intervention that leads to improved outcomes. NBS is a public health success, providing reduction in mortality and improved developmental outcomes for screened conditions. However, it is less clear to what extent newborn screening achieves the long-term goals relating to improved health, growth, development and function. We propose a framework for assessing outcomes for the health and well-being of children identified through NBS programs. The framework proposed here, and this manuscript, were approved for publication by the Secretary of Health and Human Services' Advisory Committee on Heritable Disorders in Newborns and Children (ACHDNC). This framework can be applied to each screened condition within the Recommended Uniform Screening Panel (RUSP), recognizing that the data elements and measures will vary by condition. As an example, we applied the framework to sickle cell disease and phenylketonuria (PKU), two diverse conditions with different outcome measures and potential sources of data. Widespread and consistent application of this framework across state NBS and child health systems is envisioned as useful to standardize approaches to assessment of outcomes and for continuous improvement of the NBS and child health systems. SIGNIFICANCE: Successful interventions for newborn screening conditions have been a driving force for public health newborn screening for over fifty years. Organizing interventions and outcome measures into a standard framework to systematically assess outcomes has not yet come into practice. This paper presents a customizable outcomes framework for organizing measures for newborn screening condition-specific health outcomes, and an approach to identifying sources and challenges to populating those measures.


Assuntos
Anemia Falciforme/diagnóstico , Triagem Neonatal/normas , Fenilcetonúrias/diagnóstico , Anemia Falciforme/epidemiologia , Anemia Falciforme/genética , Criança , Pré-Escolar , Humanos , Recém-Nascido , Triagem Neonatal/tendências , Fenilcetonúrias/genética , Fenilcetonúrias/patologia , Saúde Pública
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