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1.
Ir Med J ; 115(2): 536, 2022 02 17.
Artigo em Inglês | MEDLINE | ID: mdl-35416462

RESUMO

Background Radium 223 (Ra-223) has been successfully utilised for the treatment of men with metastatic castrate resistant prostate cancer (mCRPC). To date, no real world outcomes from its use in the Irish population have been described. Methods All men referred to our institution for Ra-223 from September 2016 to March 2019 were included. Patient demographics, treatments received, toxicities and outcomes were recorded. Overall survival (OS) and progression free survival (PFS) were analysed using the Kaplan-Meier method. Results Complete data was available for 54 men. Median age was 75 years (range 61-86 years). The median number of prior systemic treatments for mCRPC was 2 (range 0-4). Median ECOG performance status was 1 at the start of treatment and 2 at completion. The median number of Ra-223 cycles received was 4 with 37%(n=20) completing all 6 planned cycles. The most common treatment-related toxicity was fatigue seen in 52% of patients ( n=28). Improved pain scores were documented in 76% of men requiring opioid analgesia at the start of treatment. The median OS was 7 months. A good ECOG performance status, fewer than 6 bone metastases, normal alkaline phosphatase level at start of treatment and chemotherapy naivety were associated with improved OS. Conclusions Ra-223 is a moderately well tolerated palliative treatment amongst Irish men with mCRPC.


Assuntos
Neoplasias Ósseas , Neoplasias de Próstata Resistentes à Castração , Rádio (Elemento) , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/radioterapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Neoplasias de Próstata Resistentes à Castração/radioterapia , Rádio (Elemento)/efeitos adversos , Estudos Retrospectivos , Resultado do Tratamento
2.
Osteoporos Int ; 30(9): 1865-1872, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31317248

RESUMO

We studied 46,797 older adults who initiated denosumab in Ontario, Canada. Patient characteristics remained relatively stable over time and aligned with public reimbursement restrictions. Almost half of patients persisted with therapy for at least 3 years. Fifty-nine percent of patients who discontinued denosumab returned to treatment within 3.6 years. INTRODUCTION: The purpose of this study was to describe the characteristics of patients who initiated denosumab and estimate persistence with therapy. METHODS: We identified older adults (aged ≥ 66 years) in Ontario who initiated denosumab between 2012/02 and 2015/03 and followed them to 2016/03. Patient characteristics were summarized using medical and pharmacy claims in the year before starting denosumab and osteoporosis drug use considered since 1996/10. Persistence with denosumab and return after discontinuation (> 90-day gap) were estimated using Kaplan-Meier curves. Analyses were stratified by community and long-term care (LTC) residence. RESULTS: We identified 46,797 patients (monthly mean = 1263, SD = 187); 97% female, 13% LTC. Community-dwelling patients had a higher prevalence of bone mineral density testing (62% vs. 5%), yet were younger (mean age 78.5 vs. 86.6 years) and had lower prevalence of hip fractures (3% vs. 10%) compared to LTC patients. Eighty-two percent of patients had used osteoporosis medications in the past; 99% of whom took an oral bisphosphonate. Persistence was similar between community-dwelling and LTC patients: 59% persisted ≥ 2 years, 48% ≥ 3 years, and 38% ≥ 4 years, yet a larger proportion of LTC patients returned to denosumab after discontinuation (76% vs. 57%). CONCLUSIONS: Denosumab utilization is increasing at a steady rate in Ontario. However, persistence remains a concern given the highly reversible pharmacokinetic profile of denosumab that results in a rapid increased fracture risk following discontinuation. Over 80% of patients had a history of oral bisphosphonate therapy, which may persist in bone despite discontinuing denosumab. Consequently, better understanding of denosumab safety and effectiveness among real-world users is important.


Assuntos
Conservadores da Densidade Óssea/uso terapêutico , Denosumab/uso terapêutico , Adesão à Medicação/estatística & dados numéricos , Osteoporose/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Densidade Óssea/efeitos dos fármacos , Conservadores da Densidade Óssea/administração & dosagem , Bases de Dados Factuais , Denosumab/administração & dosagem , Esquema de Medicação , Uso de Medicamentos/estatística & dados numéricos , Feminino , Seguimentos , Fraturas do Quadril/epidemiologia , Fraturas do Quadril/fisiopatologia , Fraturas do Quadril/prevenção & controle , Humanos , Estimativa de Kaplan-Meier , Masculino , Ontário/epidemiologia , Osteoporose/epidemiologia , Osteoporose/fisiopatologia , Osteoporose Pós-Menopausa/tratamento farmacológico , Osteoporose Pós-Menopausa/epidemiologia , Osteoporose Pós-Menopausa/fisiopatologia , Fraturas por Osteoporose/epidemiologia , Fraturas por Osteoporose/fisiopatologia , Fraturas por Osteoporose/prevenção & controle , Pacientes Desistentes do Tratamento/estatística & dados numéricos , Características de Residência/estatística & dados numéricos
3.
BMC Health Serv Res ; 17(1): 524, 2017 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-28774291

RESUMO

BACKGROUND: Australian Aboriginal and Torres Strait Islander women have high rates of gestational and pre-existing type 2 diabetes in pregnancy. The Northern Territory (NT) Diabetes in Pregnancy Partnership was established to enhance systems and services to improve health outcomes. It has three arms: a clinical register, developing models of care and a longitudinal birth cohort. This study used a process evaluation to report on health professional's perceptions of models of care and related quality improvement activities since the implementation of the Partnership. METHODS: Changes to models of care were documented according to goals and aims of the Partnership and reviewed annually by the Partnership Steering group. A 'systems assessment tool' was used to guide six focus groups (49 healthcare professionals). Transcripts were coded and analysed according to pre-identified themes of orientation and guidelines, education, communication, logistics and access, and information technology. RESULTS: Key improvements since implementation of the Partnership include: health professional relationships, communication and education; and integration of quality improvement activities. Focus groups with 49 health professionals provided in depth information about how these activities have impacted their practice and models of care for diabetes in pregnancy. Co-ordination of care was reported to have improved, however it was also identified as an opportunity for further development. Recommendations included a central care coordinator, better integration of information technology systems and ongoing comprehensive quality improvement processes. CONCLUSIONS: The Partnership has facilitated quality improvement through supporting the development of improved systems that enhance models of care. Persisting challenges exist for delivering care to a high risk population however improvements in formal processes and structures, as demonstrated in this work thus far, play an important role in work towards improving health outcomes.


Assuntos
Atenção à Saúde/métodos , Diabetes Mellitus Tipo 2/etnologia , Serviços de Saúde do Indígena , Havaiano Nativo ou Outro Ilhéu do Pacífico , Gravidez em Diabéticas/etnologia , Melhoria de Qualidade , Austrália/epidemiologia , Atenção à Saúde/organização & administração , Diabetes Mellitus Tipo 2/terapia , Feminino , Grupos Focais , Pessoal de Saúde , Humanos , Gravidez , Gravidez em Diabéticas/terapia
4.
Br J Anaesth ; 115(1): 45-52, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25991758

RESUMO

BACKGROUND: After cardiac surgery, patients receive large amounts of fluid in the Intensive Care Unit (ICU). We plan to conduct a multi-centre randomised controlled trial, of a conservative fluid regime, in patients after cardiac surgery, and have reported results of a feasibility study that evaluated efficacy and safety of the proposed regime. METHODS: After ethical approval, a single-centre, prospectively randomised interventional study was undertaken. Participants were randomised to either usual care, or to a protocolised algorithm, utilising stroke volume variation, to guide fluid administration to patients who were deemed to have inadequate cardiac output and were likely to be volume responsive. The study protocol lasted from ICU admission to de-sedation or 24 h, whichever occurred first. RESULTS: We randomised 144 subjects over 9 months. Less bolus fluid and less total overall fluid volume was administered in the intervention group (median (IQR) 1620 ml (500-3410) and 2525 ml (1440-5250; P<0.001), compared with the usual care group (2050 ml (910-4280) and 2980 ml (2070-6580; P=0.001), from ICU admission to extubation. There was no significant difference in incidence of acute kidney injury or the average amount of fluid administered to the usual care group at the beginning compared with the end of the study. CONCLUSION: It is both possible and safe to achieve a significant reduction in the amount of fluid administered to patients, allocated to a conservative fluid protocol. These results suggest that a planned multi-centre study is both justified and feasible. CLINICAL TRIAL REGISTRATION: Australia New Zealand Clinical Trials Registry www.anzctr.org.au (ACTRN12612000754842).


Assuntos
Procedimentos Cirúrgicos Cardíacos , Hidratação/métodos , Cuidados Pós-Operatórios/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Débito Cardíaco , Estudos de Viabilidade , Feminino , Humanos , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Volume Sistólico , Adulto Jovem
5.
Dis Aquat Organ ; 112(2): 121-30, 2014 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-25449323

RESUMO

Rhabdovirus infections are an emerging problem for both wild and farmed freshwater fish in Northern Europe. In October 2005, a clinical outbreak with an approximate mortality rate of 40% occurred in a single batch of juvenile perch on a farm in the Republic of Ireland. Clinical signs developed slowly and were consistent with a perch rhabdovirus infection: signs included haemorrhages at the base of the fins and apparent impairment of the central nervous system (manifested as loss of equilibrium and erratic swimming behaviour). Studies suggest that the infected fish originated from a hatchery within the country which relied on wild fish broodstock to supplement the production of perch juveniles. A related rhabdovirus was subsequently isolated from this hatchery. Virus isolation studies have shown that rhabdoviruses were often isolated from wild fish in the vicinity of the hatchery between 1993 and 2005. All isolates were analysed using a generic primer set specific for the L gene of fish vesiculotype viruses. Phylogenetic analysis revealed that all isolates recovered from perch clustered together with the European lake trout rhabdovirus (903/87) of the genus Perhabdovirus. In addition to this, anguillid rhabdovirus was isolated from eel, and the partial L-gene sequence of a previously reported isolate from tench clustered with the pike fry rhabdoviruses, in the genus Sprivivirus.


Assuntos
Doenças dos Peixes/virologia , Variação Genética , Percas , Infecções por Rhabdoviridae/veterinária , Rhabdoviridae , Animais , Aquicultura , Sequência de Bases , Doenças dos Peixes/epidemiologia , Irlanda/epidemiologia , Filogenia , RNA Viral/genética , Infecções por Rhabdoviridae/virologia
6.
BMC Prim Care ; 25(1): 104, 2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38565981

RESUMO

BACKGROUND: Providing primary care for people with frailty can be challenging due to an increased risk of adverse outcomes and use of potentially inappropriate medications which may exacerbate characteristics of frailty. eConsult is a service where primary care providers can receive timely specialist advice for their patients through a secure web-based application. We aimed to develop a classification system to characterize medication-focused eConsult questions for older adults with frailty and assess its usability. METHODS: A classification system was developed and refined over three cycles of improvement through a cross-sectional study of 35 cases categorized as medication-focused from cases submitted in 2019 for patients aged 65 or older with frailty through the Champlain BASE eConsult service (Ontario, Canada). The final classification system was then applied to each case. RESULTS: The classification system contains 5 sections: (1) case descriptives; (2) intent and type of question; (3) medication recommendations and additional information in the response; (4) medication classification; and (5) potentially inappropriate medications. Among the 35 medication-focused cases, the most common specialties consulted were endocrinology (9 cases, 26%) and cardiology (5 cases, 14%). Medication histories were available for 29 cases (83%). Many patients were prescribed potentially inappropriate medications based on explicit tools (AGS Beers Criteria®, STOPPFall, Anticholinergic Cognitive Burden Scale, ThinkCascades) yet few consults inquired about these medications. CONCLUSION: A classification system to describe medication-related eConsult cases for patients experiencing frailty was developed and applied to 35 eConsult cases. It can be applied to more cases to identify professional development opportunities and enhancements for eConsult services.


Assuntos
Fragilidade , Humanos , Idoso , Estudos Transversais , Fragilidade/diagnóstico , Atenção Primária à Saúde , Encaminhamento e Consulta , Ontário
7.
Anaesthesia ; 68(9): 899-903, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23789738

RESUMO

We undertook a randomised, controlled trial to compare the analgesic efficacy and opioid sparing effect of nerve stimulator-guided femoral nerve block with fascia iliaca compartment block in patients awaiting surgery for fractured neck of femur. Ten-centimetre visual analogue pain scores were measured before and 2 h after the block and opioid consumption was recorded in the 12-h period after the block. One hundred and ten patients were randomly assigned. Femoral nerve block provided superior pre-operative analgesia for fractured neck of femur compared with fascia iliaca compartment block. The difference in the mean reduction of pain score after the block was 0.9 (95% CI 0-1.8); p = 0.047. Patients receiving a femoral nerve block required less morphine after the block than those receiving fascia iliaca compartment block (p = 0.041).


Assuntos
Fraturas do Colo Femoral/cirurgia , Bloqueio Nervoso/métodos , Dor/tratamento farmacológico , Cuidados Pré-Operatórios/métodos , Idoso , Idoso de 80 Anos ou mais , Analgésicos Opioides/administração & dosagem , Anestésicos Locais , Bupivacaína/análogos & derivados , Estimulação Elétrica/métodos , Fáscia , Feminino , Nervo Femoral , Humanos , Levobupivacaína , Masculino , Pessoa de Meia-Idade , Manejo da Dor/métodos , Medição da Dor/métodos
8.
Nat Genet ; 1(4): 273-7, 1992 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-1302023

RESUMO

The genome of the fission yeast, Schizosaccharomyces pombe, consists of some 14 million base pairs of DNA contained in three chromosomes. On account of its excellent genetics we used it as a test system for a strategy designed to map mammalian chromosomes and genomes. Data obtained from hybridization fingerprinting established an ordered library of 1,248 yeast artificial chromosome clones with an average size of 535 kilobases. The clones fall into three contigs completely representing the three chromosomes of the organism. This work provides a high resolution physical and clone map of the genome, which has been related to available genetic and physical map information.


Assuntos
Cromossomos Fúngicos , Genoma Fúngico , Composição de Bases , Evolução Biológica , Quimera , Mapeamento Cromossômico/métodos , Clonagem Molecular , DNA Fúngico/genética , Desoxirribonucleases de Sítio Específico do Tipo II , Biblioteca Gênica , Humanos , Dados de Sequência Molecular , Saccharomyces cerevisiae/genética , Schizosaccharomyces
9.
Nat Genet ; 22(1): 27-36, 1999 May.
Artigo em Inglês | MEDLINE | ID: mdl-10319858

RESUMO

A whole-genome radiation hybrid (RH) panel was used to construct a high-resolution map of the rat genome based on microsatellite and gene markers. These include 3,019 new microsatellite markers described here for the first time and 1,714 microsatellite markers with known genetic locations, allowing comparison and integration of maps from different sources. A robust RH framework map containing 1,030 positions ordered with odds of at least 1,000:1 has been defined as a tool for mapping these markers, and for future RH mapping in the rat. More than 500 genes which have been mapped in mouse and/or human were localized with respect to the rat RH framework, allowing the construction of detailed rat-mouse and rat-human comparative maps and illustrating the power of the RH approach for comparative mapping.


Assuntos
Marcadores Genéticos/genética , Genoma , Ratos/genética , Animais , Mapeamento Cromossômico , Cromossomos/genética , Genes/genética , Humanos , Células Híbridas , Camundongos , Dados de Sequência Molecular
10.
Water Sci Technol ; 66(8): 1708-15, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22907455

RESUMO

The short-term impacts of atrazine (herbicide), tributyltin (organometal) and copper on the behaviour of Euglena gracilis Klebs (Euglenophyta) were assessed. First, the ECOTOX automated image analysis system was used, which measured swimming velocity, cell shape, percentage of cells swimming upwards, and randomness of swimming. Next, visual observation by microscopy was used to measure percentage of cell motility and cell shape. Behavioural changes can be used as an indicator of stress in less than 24 h, potentially making them suitable for inclusion in early-warning systems for water quality. Findings indicate that E. gracilis is a very sensitive organism to copper, showing inhibition of motility with visual observation at 0.8 µmol/L within 1 h. The image analysis system was in general less sensitive than visual observation for detecting behavioural changes after incubation in copper. In contrast, after exposure to organic contaminants atrazine and tributyltin, the ECOTOX system detected small changes in the number of cells swimming upwards (antigravitactic behaviour) at higher concentrations.


Assuntos
Euglena gracilis/efeitos dos fármacos , Poluentes Químicos da Água/toxicidade , Atrazina/toxicidade , Cobre/toxicidade , Herbicidas/toxicidade , Compostos de Trialquitina/toxicidade
11.
AJNR Am J Neuroradiol ; 43(10): 1378-1395, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35618424

RESUMO

MRS, including single-voxel spectroscopy and MR spectroscopic imaging, captures metabolites in high-grade gliomas. Emerging evidence indicates that 7T MRS may be more sensitive to aberrant metabolic activity than lower-field strength MRS. However, the literature on the use of 7T MRS to visualize high-grade gliomas has not been summarized. We aimed to identify metabolic information provided by 7T MRS, optimal spectroscopic sequences, and areas for improvement in and new applications for 7T MRS. Literature was found on PubMed using "high-grade glioma," "malignant glioma," "glioblastoma," "anaplastic astrocytoma," "7T," "MR spectroscopy," and "MR spectroscopic imaging." 7T MRS offers higher SNR, modestly improved spatial resolution, and better resolution of overlapping resonances. 7T MRS also yields reduced Cramér-Rao lower bound values. These features help to quantify D-2-hydroxyglutarate in isocitrate dehydrogenase 1 and 2 gliomas and to isolate variable glutamate, increased glutamine, and increased glycine with higher sensitivity and specificity. 7T MRS may better characterize tumor infiltration and treatment effect in high-grade gliomas, though further study is necessary. 7T MRS will benefit from increased sample size; reductions in field inhomogeneity, specific absorption rate, and acquisition time; and advanced editing techniques. These findings suggest that 7T MRS may advance understanding of high-grade glioma metabolism, with reduced Cramér-Rao lower bound values and better measurement of smaller metabolite signals. Nevertheless, 7T is not widely used clinically, and technical improvements are necessary. 7T MRS isolates metabolites that may be valuable therapeutic targets in high-grade gliomas, potentially resulting in wider ranging neuro-oncologic applications.


Assuntos
Neoplasias Encefálicas , Glioma , Humanos , Neoplasias Encefálicas/patologia , Isocitrato Desidrogenase , Glioma/patologia , Espectroscopia de Ressonância Magnética/métodos , Imageamento por Ressonância Magnética/métodos
12.
Science ; 377(6603): 285-291, 2022 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-35857591

RESUMO

Carbonaceous asteroids, such as (101955) Bennu, preserve material from the early Solar System, including volatile compounds and organic molecules. We report spacecraft imaging and spectral data collected during and after retrieval of a sample from Bennu's surface. The sampling event mobilized rocks and dust into a debris plume, excavating a 9-meter-long elliptical crater. This exposed material is darker, spectrally redder, and more abundant in fine particulates than the original surface. The bulk density of the displaced subsurface material was 500 to 700 kilograms per cubic meter, which is about half that of the whole asteroid. Particulates that landed on instrument optics spectrally resemble aqueously altered carbonaceous meteorites. The spacecraft stored 250 ± 101 grams of material, which will be delivered to Earth in 2023.

13.
J Fish Dis ; 33(2): 123-35, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19732268

RESUMO

Prospective longitudinal studies of two outbreaks of pancreas disease in Atlantic salmon (AS), Salmo salar L., in Ireland were conducted. Both outbreaks occurred during the marine phase of production, with one caused by salmonid alphavirus subtype 1 (SAV1) and the other by SAV4. In addition to screening a range of tissues by real-time reverse transcriptase polymerase chain reaction (RRT-PCR), virological, serological and histopathological examinations were performed along with partial genome sequencing and results were related to environmental and production data and farm history. On Farm 1 (marine sampling only), infection was detected within 3 weeks of smolts being placed on the farm, while on Farm 2 (freshwater and marine sampling), infection was first detected 315 days after transfer to sea. In both outbreaks, RRT-PCR signals were detected in a range of tissues including gill, heart, kidney, pancreas/pyloric caeca, brain and serum. Persistence of signal was longest in gill and heart (> or =265 days on both farms) and shortest in serum. Mortalities on the two farms varied from 10.9% to 30%. In both cases, partial genome sequence of the causative viruses were identical to SAV strains detected in previous populations of AS on each of the study farms, including populations with which the study populations overlapped in time and space.


Assuntos
Infecções por Alphavirus/veterinária , Alphavirus/fisiologia , Doenças dos Peixes/epidemiologia , Pesqueiros , Salmo salar/virologia , Alphavirus/isolamento & purificação , Infecções por Alphavirus/epidemiologia , Infecções por Alphavirus/mortalidade , Infecções por Alphavirus/patologia , Animais , Anticorpos Antivirais/sangue , Doenças dos Peixes/mortalidade , Doenças dos Peixes/patologia , Doenças dos Peixes/virologia , Irlanda , Estudos Longitudinais , RNA Viral/sangue , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Temperatura
14.
J Fish Dis ; 32(12): 979-87, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19602095

RESUMO

This study investigated the genotypes and sub-groups of infectious pancreatic necrosis virus (IPNV) present in farmed and wild salmonid fish in Ireland. An 1100-bp portion of the VP2 region of segment A from each of 55 IPNV isolates collected over 2003-2007 was amplified by reverse-transcription-polymerase chain reaction and the product directly sequenced. The nucleotide sequences of each isolate were aligned and compared with each other and with the corresponding sequences of a number of reference isolates. All the 55 sequenced isolates belonged to genogroup 5 (Sp serotype) and could be divided into two subgroups. Irish subgroup 1 consisted of isolates from farmed salmon originating from an Irish salmon broodstock. Irish subgroup 2 consisted of isolates from imported farmed stock and all reported clinical outbreaks of IPN were associated with isolates from subgroup 2. Isolates from wild fish were identical to some isolates from subgroup 2, and therefore are believed to have originated from infected farms. These results highlight the importance of import risk analysis for diseases not listed under current legislation.


Assuntos
Animais Selvagens/virologia , Infecções por Birnaviridae/veterinária , Doenças dos Peixes/virologia , Pesqueiros , Vírus da Necrose Pancreática Infecciosa/genética , Substituição de Aminoácidos , Animais , Infecções por Birnaviridae/epidemiologia , Doenças dos Peixes/epidemiologia , Variação Genética , Vírus da Necrose Pancreática Infecciosa/classificação , Vírus da Necrose Pancreática Infecciosa/isolamento & purificação , Vírus da Necrose Pancreática Infecciosa/patogenicidade , Irlanda/epidemiologia , Filogenia , Salmonidae/virologia , Proteínas Virais/genética
15.
J Pediatr Urol ; 15(1): 46.e1-46.e6, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30446299

RESUMO

INTRODUCTION: Renal agenesis and multicystic dysplastic kidney (MCDK) are usually associated with either an absent or atretic ureter. Occasionally, these renal anomalies may be associated with a dilated tortuous ureter, ureterocele or other cystic malformation of mesonephric duct (MND) remnants. OBJECTIVES: The objective of this study was to identify and classify anatomical variants of tubulocystic remnants of the MND, with a secondary focus on natural history and management outcomes. PATIENTS AND METHODS: A retrospective cohort study of patients seen in the study institution between 2007 and 2014 with a tubulocystic abnormality of MND structures associated with either MCDK or renal agenesis was conducted. Medical imaging and progress notes were reviewed for all patients. Data collected included anatomical information, surgical intervention, histology and outcomes of both conservatively managed and surgically resected MND remnant structures. RESULTS: Nineteen patients were identified, 5 girls and 14 boys. Median age at presentation was 4.6 years. Anomalies of the MND occurred on the left in 9 patients and on the right in 10 patients. Mean follow-up was 3.4 years. Patients fell into 3 distinct anatomical groups: Type I, including orthotopic remnants corresponding to ureteric bud structures (ureter and trigone); Type II, including ectopic MND remnants of ureteric bud structures, and Type III, including complex remnants corresponding to MND structures other than those from ureteric bud (vas, epididymis and seminal vesicles). Anomalies of structures arising from urogenital sinus and paramesonephric ducts were also identified. Most patients were asymptomatic and successfully managed conservatively. Transvesical puncture of trigonal cysts provided effective decompression in 5 patients. Partial or complete MCDK regression was seen in 7 patients, whereas MND cystic anomalies did not regress spontaneously. DISCUSSION: When MND tubulocystic structures persist along with renal agenesis or MCDK, most arise from ureteric bud structures in an orthotopic position as a ureterocele with or without a blind-ending ureter-like structure. Less commonly, ureteric bud structures insert ectopically into the urogenital tract, or tubulocystic structures arising from the remainder of the MND occur. Embryogenesis of other urogenital structures may also be abnormal, and conditions such as Zinner syndrome and obstructed hemivagina and ipsilateral renal agenesis syndrome should be considered. CONCLUSIONS: Complications are uncommon, and surgical intervention should be limited to symptomatic patients. Remnants of metanephric blastema may involute, but MND remnants persist.


Assuntos
Anormalidades Múltiplas , Rim/anormalidades , Rim Displásico Multicístico/complicações , Ductos Mesonéfricos/anormalidades , Anormalidades Múltiplas/diagnóstico , Anormalidades Múltiplas/cirurgia , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Rim/cirurgia , Masculino , Rim Displásico Multicístico/cirurgia , Estudos Retrospectivos , Resultado do Tratamento , Ductos Mesonéfricos/cirurgia
16.
Endocr Connect ; 8(2): 100-110, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30668521

RESUMO

Disorders of sex development (DSDs) are a diverse group of conditions where the chromosomal, gonadal or anatomical sex can be atypical. The highly heterogeneous nature of this group of conditions often makes determining a genetic diagnosis challenging. Prior to next generation sequencing (NGS) technologies, genetic diagnostic tests were only available for a few of the many DSD-associated genes, which consequently had to be tested sequentially. Genetic testing is key in establishing the diagnosis, allowing for personalised management of these patients. Pinpointing the molecular cause of a patient's DSD can significantly impact patient management by informing future development needs, altering management strategies and identifying correct inheritance pattern when counselling family members. We have developed a 30-gene NGS panel, designed to be used as a frontline test for all suspected cases of DSD (both 46,XX and 46,XY cases). We have confirmed a diagnosis in 25 of the 80 patients tested to date. Confirmed diagnoses were linked to mutations in AMH, AMHR2, AR, HSD17B3, HSD3B2, MAMLD1, NR5A1, SRD5A2 and WT1 which have resulted in changes to patient management. The minimum diagnostic yield for patients with 46,XY DSD is 25/73. In 34/80 patients, only benign or likely benign variants were identified, and in 21/80 patients only variants of uncertain significance (VOUS) were identified, resulting in a diagnosis not being confirmed in these individuals. Our data support previous studies that an NGS panel approach is a clinically useful and cost-effective frontline test for patients with DSDs.

17.
Science ; 366(6470)2019 12 06.
Artigo em Inglês | MEDLINE | ID: mdl-31806784

RESUMO

Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu, demonstrating that it is an active asteroid. The ejection events were imaged by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) spacecraft. For the three largest observed events, we estimated the ejected particle velocities and sizes, event times, source regions, and energies. We also determined the trajectories and photometric properties of several gravitationally bound particles that orbited temporarily in the Bennu environment. We consider multiple hypotheses for the mechanisms that lead to particle ejection for the largest events, including rotational disruption, electrostatic lofting, ice sublimation, phyllosilicate dehydration, meteoroid impacts, thermal stress fracturing, and secondary impacts.

18.
J Pediatr Urol ; 13(3): 265.e1-265.e6, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28159527

RESUMO

OBJECTIVE: Radiological bladder abnormalities in boys with posterior urethral valves (PUV) are well recognised; however, the assessment is subjective. The shape, wall, reflux and diverticuli (SWRD) score objectively assesses shape, wall, reflux and diverticuli in a simple way. This study was undertaken to demonstrate that the SWRD score is reliable, reproducible and correlates with bladder outcome and videourodynamic (VUD) assessment in boys with PUV. MATERIALS AND METHODS: Three blinded assessors determined the SWRD scores of PUV bladders from cystometrograms taken during VUD from September 2012 to October 2013. The scores were correlated with clinical outcome and VUD pressure measurements. Data were given as median (interquartile range), non-parametric tests used as appropriate (Mann-Whitney U test, or Kruskall-Wallis) and P < 0.05 was taken as significant. RESULTS: A total of 55 boys with PUV underwent VUD assessment, for which 52 cystometrograms were available. The SWRD score for non-operative management was 1.0 (0.1-1.9) vs 2.0 (1.0-3.3) for operative intervention, P = 0.018 (Summary Figure). The SWRD score for compliant bladders was 1.1 (0.6-2.0) vs hypercompliant 1.7 (0.5-2.8) vs non-compliant 3.3 (2.8-5.0), Kruskall-Wallis P = 0.011. The hostile detrusor overactivity (DO) bladders (Pdet >40 cmH2O) had a SWRD score of 2.0 (1.3-3.7) vs 1.0 (0.5-2.5) for low-pressure DO bladders, P < 0.05. DISCUSSION: In this series of patients, increasingly distorted bladder shape was seen to be associated with poor bladder dynamics on VUD. Patients with poorly compliant bladders had a significantly higher SWRD score than normal or megacystis patients. Severe DO was also significantly associated with a high SWRD score. Therefore, the radiological appearance of a hostile bladder represented a marker for high intravesical pressure. VUR and bladder diverticuli may lead to spurious pressure measurements during VUD; however, the SWRD score provided an independent mechanism with which to objectively assess these patients, even in the presence of gross VUR. CONCLUSIONS: The SWRD score is a simple and objective scoring system for the radiological abnormalities of PUV bladders. It correlates with clinical outcome and VUD assessment of compliance and DO, but is independent of pressure measurements and so not confounded by VUR acting as a 'pop-off' mechanism.


Assuntos
Cistografia , Uretra/anormalidades , Uretra/diagnóstico por imagem , Urodinâmica , Adolescente , Criança , Pré-Escolar , Humanos , Masculino , Reprodutibilidade dos Testes
19.
Leukemia ; 31(12): 2642-2651, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28439107

RESUMO

Multiple myeloma (MM) is characterized by the clonal expansion and metastatic spread of malignant plasma cells to multiple sites in the bone marrow (BM). Recently, we implicated the sialyltransferase ST3Gal-6, an enzyme critical to the generation of E-selectin ligands, in MM BM homing and resistance to therapy. Since E-selectin is constitutively expressed in the BM microvasculature, we wished to establish the contribution of E-selectin ligands to MM biology. We report that functional E-selectin ligands are restricted to a minor subpopulation of MM cell lines which, upon expansion, demonstrate specific and robust interaction with recombinant E-selectin in vitro. Moreover, an increase in the mRNA levels of genes involved in the generation of E-selectin ligands was associated with inferior progression-free survival in the CoMMpass study. In vivo, E-selectin ligand-enriched cells induced a more aggressive disease and were completely insensitive to Bortezomib. Importantly, this resistance could be reverted by co-administration of GMI-1271, a specific glycomimetic antagonist of E-selectin. Finally, we report that E-selectin ligand-bearing cells are present in primary MM samples from BM and peripheral blood with a higher proportion seen in relapsed patients. This study provides a rationale for targeting E-selectin receptor/ligand interactions to overcome MM metastasis and chemoresistance.


Assuntos
Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Selectina E/antagonistas & inibidores , Selectina E/metabolismo , Mieloma Múltiplo/metabolismo , Animais , Bortezomib/farmacologia , Adesão Celular , Sobrevivência Celular/efeitos dos fármacos , Modelos Animais de Doenças , Feminino , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Ligantes , Camundongos , Mieloma Múltiplo/genética , Mieloma Múltiplo/mortalidade , Mieloma Múltiplo/patologia , Prognóstico , Ligação Proteica , Recidiva , Células Tumorais Cultivadas , Ensaios Antitumorais Modelo de Xenoenxerto
20.
Cochrane Database Syst Rev ; (1): CD005652, 2006 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-16437534

RESUMO

BACKGROUND: Borderline personality disorder (BPD) is a relatively common personality disorder with a major impact on health services as those affected often present in crisis, often self-harming. OBJECTIVES: To evaluate the effects of psychological interventions for people with borderline personality disorder. SEARCH STRATEGY: We conducted a systematic search of 26 specialist and general bibliographic databases (December 2002) and searched relevant reference lists for further trials. SELECTION CRITERIA: All relevant clinical randomised controlled trials involving psychological treatments for people with BPD. The definition of psychological treatments included behavioural, cognitive-behavioural, psychodynamic and psychoanalytic. DATA COLLECTION AND ANALYSIS: We independently selected, quality assessed and data extracted studies. For binary outcomes we calculated a standard estimation of the risk ratio (RR), its 95% confidence interval (CI), and where possible the number need to help/harm (NNT/H). For continuous outcomes, endpoint data were preferred to change data. Non-skewed data from valid scales were summated using a weighted mean difference (WMD). MAIN RESULTS: We identified seven studies involving 262 people, and five separate comparisons. Comparing dialectical behaviour therapy (DBT) with treatment as usual studies found no difference for the outcome of still meeting SCID-II criteria for the diagnosis of BPD by six months (n=28, 1 RCT, RR 0.69 CI 0.35 to 1.38) or admission to hospital in previous three months (n=28, 1 RCT, RR 0.77 CI 0.28 to 2.14). Self harm or parasuicide may decrease at 6 to 12 months (n=63, 1 RCT, RR 0.81 CI 0.66 to 0.98, NNT 12 CI 7 to 108). One study detected statistical difference in favour of people receiving DBT compared with those allocated to treatment as usual for average scores of suicidal ideation at 6 months (n=20, MD -15.30 CI -25.46 to -5.14). There was no difference for the outcome of leaving the study early (n=155, 3 RCTs, RR 0.74 CI 0.52 to 1.04). For the outcome of interviewer-assessed alcohol free days, skewed data are reported and tend to favour DBT. When a substance abuse focused DBT was compared with comprehensive validation therapy plus 12-step substance misuse programme no clear differences were found for service outcomes (n=23, 1 RCT, RR imprisoned 1.09 CI 0.64 to 1.87) or leaving the study early (n=23, 1 RCT, RR 7.58 CI 0.44 to 132.08). When dialectical behaviour therapy-oriented treatment is compared with client centred therapy no differences were found for service outcomes (n=24, 1 RCT, RR admitted 0.33 CI 0.08 to 1.33). However, fewer people in the DBT group displayed indicators of parasuicidal behaviour (n=24, RR 0.13 CI 0.02 to 0.85, NNT 2 CI 2 to 11). There were no differences for outcomes of anxiety and depression (n=24, 1 RCT, RR anxiety BAI >/=10 0.60 CI 0.32 to 1.12; RR depression HDRS >/=10 0.43 CI 0.14 to 1.28) but people who received DBT had less general psychiatric severity than those in the control (MD BPRS at 6 months -7.41 CI -13.72 to -1.10). Finally this one relevant study reports skewed data for suicidal ideation with considerably lower scores for people allocated to DBT. When psychoanalytically oriented partial hospitalization was compared with general psychiatric care the former tended to come off best. People who received treatment in a psychoanalytic orientated day hospital were less likely to be admitted into inpatient care when measured at different time points (e.g. n=44, RR admitted to inpatient 24 hour care >18 to 24 months 0.05 CI 0.00 to 0.77, NNT 3 CI 3 to 10) Fewer people in psychoanalytically oriented partial hospitalization needed day hospital intervention in the 18 months after discharge (n=44, 1 RCT, RR 0.04 CI 0.00 to 0.59, NNT 2 CI 2 to 8). More people in the control group took psychotropic medication by the 30 to 36 month follow-up, than those receiving psychoanalytic treatment (n=44, 1 RCT, RR 0.44 CI 0.25 to 0.80, NNT 3 CI 2 to 7). Anxiety and depression scores were generally lower in the psychoanalytically oriented partial hospitalization group (n=44, 1 RCT, RR >/=14 on BDI 0.52 CI 0.34 to 0.80, NNT 3 CI 3 to 6), as are global severity scores. People receiving psychoanalytic care in a day hospital had better social improvement in social adjustment using the SAS-SR at 6 to 12 months compared with people in general psychiatric care (MD -0.70 CI -1.08 to -0.32). Rates of attrition were the same (n=44, 1 RCT, RR leaving the study early 1.00 CI 0.23 to 4.42). AUTHORS' CONCLUSIONS: This review suggests that some of the problems frequently encountered by people with borderline personality disorder may be amenable to talking/behavioural treatments but all therapies remain experimental and the studies are too few and small to inspire full confidence in their results. These findings require replication in larger 'real-world' studies.


Assuntos
Transtorno da Personalidade Borderline/terapia , Psicoterapia/métodos , Terapia Comportamental , Transtorno da Personalidade Borderline/psicologia , Humanos , Psicanálise , Psicoterapia de Grupo , Ensaios Clínicos Controlados Aleatórios como Assunto
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