Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 20
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
JAMA Surg ; 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38959020

RESUMO

Importance: Exception From Informed Consent (EFIC) research requires community consultation (CC) and public disclosure (PD). Traditional methods of conducting CC and PD are slow, expensive, and labor intensive. Objective: To describe the feasibility and reach of a novel interactive, media-based approach to CC and PD and to identify the similarities and differences between trial sites in website views, survey responses, online community forum attendance, and opt-out requests. Design, Setting, and Participants: This survey study analyzed the CC and PD campaigns conducted for the TAP trial (Evaluation of BE1116 in Patients With Traumatic Injury and Acute Major Bleeding to Improve Survival), an EFIC trial of the early administration of prothrombin complex concentrate in patients with trauma. The CC and PD campaigns consisted of social media advertisements, linked websites, community surveys, and online community forums. These activities were coordinated from a central site and approved by a central institutional review board. This study focused on the first 52 of 91 TAP trial sites (level I trauma centers) in the US to have completed their CC and PD campaigns. Community members in the catchment areas of the participating trauma centers were targeted. Data analysis was conducted between October 2023 and February 2024. Exposure: Social media advertisements, surveys, and online community meetings conducted as part of the CC and PD campaign for the TAP trial. Main Outcomes and Measures: Social media campaign reach and engagement, web page views, survey results, online community forum attendance, and opt-out requests. Results: Fifty-two trial sites were approved for participant enrollment. Social media advertisements were displayed 92 million times, reaching 11.8 million individuals. The median (IQR) number of people reached in each location was 210 317 (172 068-276 968). Site-specific websites were viewed 144 197 times (median [IQR] viewings per site, 2984 [1267-4038]). A total of 17 206 fully or partly completed surveys were received, and survey respondents had a median (IQR) age of 40.1 (15-65) years and included 10 444 females (60.7%). Overall, 60.6% survey respondents said they would want to be entered into the trial even if they could not give consent, 87.7% agreed that emergency care research was necessary, and 88.0% agreed that the TAP trial should be conducted in their community. Online community forums were attended by a median (IQR) number of 38 (20-63) people. Four opt-out requests were received. Conclusions and Relevance: The interactive media-based approach to CC and PD for the ongoing TAP trial showed the feasibility and benefits of executing an efficient, coordinated, centrally run series of locally branded and geographically targeted CC and PD campaigns for a large EFIC study.

2.
Ticks Tick Borne Dis ; 14(4): 102181, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37084584

RESUMO

Canine piroplasmid infections can be caused by Babesia spp., Theileria spp. and Rangelia vitalii. In Brazil, canine babesiosis caused by Babesia vogeli is endemic and reported throughout the country. On the other hand, Rangeliosis caused by R. vitalii has only been described so far in the South and Southeast regions. Despite that, studies analyzing the laboratory and molecular characterization of these hemoprotozoa are still scarce. To investigate the occurrence, the laboratory features, the molecular characterization, and the diversity of piroplasmids from Midwestern Brazil, a survey was performed using blood samples obtained from 276 domestic dogs from Brasília, Federal District, Midwestern Brazil. A broad-range quantitative PCR (qPCR) targeting the mitochondrial large subunit ribosomal DNA (LSU4) was used to detect piroplasmid DNA. The overall molecular occurrence of piroplasmids was 11.2% (31/276), with 9.7% (27/276) of the sequences identified as Babesia vogeli (98-100% identity to B. vogeli isolate from the USA). Based on a partial 18S rRNA sequence pairwise alignment (-250 bp), 1.4% (4/276) of the sequences showed only 76.8% identity with B. vogeli but 100% identity with opossum-associated Babesia sp. (MW290046-53). These findings suggest the exposure of dogs from Brazil to a recently described Babesia sp. isolated from white-eared opossum. None of the analyzed dogs was positive for Theileria spp. or R. vitalii. Subsequently, all positive sequences were submitted to three additional PCR assays based on the 18S rRNA, cox-1, and cytb genes, aiming at performing a haplotype network analysis. Haplotype network using cox-1 sequences showed the presence of six different haplotypes of B. vogeli; one of them was shared with isolates from Brazil, the USA, and India. When including animals co-infected with other vector-borne diseases, piroplasmid-positive dogs had 2.3 times higher chance of having thrombocytopenia than the negative ones. The molecular results demonstrated that the compared Babesia vogeli sequences showed a low variability as well as evidence of exposure to a putative novel opossum-associated Babesia sp. in dogs from Midwestern Brazil.


Assuntos
Babesia , Babesiose , Doenças do Cão , Theileria , Cães , Animais , RNA Ribossômico 18S/genética , Brasil/epidemiologia , Doenças do Cão/parasitologia , Babesiose/parasitologia , Theileria/genética
3.
Parasitol Res ; 121(9): 2561-2570, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35876912

RESUMO

Feline piroplasmids include the genera Babesia spp., Cytauxzoon spp., and Theileria spp. In Brazil, there are few reports regarding these hemoprotozoans; however, clinicopathological and molecular data are scarce. This study aimed to characterize the clinical relevance of these parasites through hematological, biochemical, and molecular approaches. For this purpose, 166 cats from Brasilia, Federal District, Midwestern Brazil, were screened using a quantitative polymerase chain reaction (qPCR) for piroplasmids based on the LSU4 mitochondrial gene, which resulted in an overall prevalence of 36/166 (21.7%). Twelve of 166 samples (7.2%) were positive for C. felis, while 19/166 (11.4%) were positive for Babesia vogeli. No samples tested positive for Theileria spp. Babesia vogeli and Cytauxzoon spp. LSU4 sequences showed identities of 97-100% and 99.3%, respectively, to US isolates. The hematological and biochemical findings did not differ significantly between the cats that tested positive and negative for piroplasmids. Although the lack of abnormalities in clinical and laboratory parameters does not eliminate the possibility that these cats were sick and recovered, it may suggest that the Brazilian strain of Cytauxzoon spp. is not as pathogenic as that from the USA, despite the high molecular identity with North American isolates.


Assuntos
Babesia , Babesiose , Doenças do Gato , Felis , Piroplasmida , Theileria , Animais , Babesiose/epidemiologia , Babesiose/parasitologia , Brasil/epidemiologia , Doenças do Gato/epidemiologia , Gatos , Piroplasmida/genética , Theileria/genética
4.
Vet Sci ; 10(1)2022 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-36669027

RESUMO

Chronic inflammatory enteropathy (CE) is a common cause of persistent gastrointestinal signs and intestinal inflammation in dogs. Since evidence links dysbiosis to mucosal inflammation, probiotics, prebiotics, or their combination (synbiotics) may reduce intestinal inflammation and ameliorate dysbiosis in affected dogs. This study's aim was to investigate the effects of the synbiotic-IgY supplement on clinical signs, inflammatory indices, and mucosal microbiota in dogs with CE. Dogs with CE were enrolled in a randomized prospective trial. Twenty-four client-owned dogs were fed a hydrolyzed diet and administered supplement or placebo (diet) for 6 weeks. Dogs were evaluated at diagnosis and 2- and 6-week post-treatment. Outcome measures included clinical activity, endoscopic and histologic scores, inflammatory markers (fecal calprotectin, C-reactive protein), and composition of the mucosal microbiota via FISH. Eleven supplement- and nine placebo-treated dogs completed the trial. After 6 weeks of therapy, clinical activity and endoscopic scores decreased in both groups. Compared to placebo-treated dogs, dogs administered supplement showed decreased calprotectin at 2-week post-treatment, decreased CRP at 2- and 6-week post-treatment increased mucosal Clostridia and Bacteroides and decreased Enterobacteriaceae in colonic biopsies at trial completion. Results suggest a beneficial effect of diet and supplements on host responses and mucosal microbiota in dogs with CE.

5.
Behav Pharmacol ; 32(7): 549-560, 2021 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-34417357

RESUMO

The effectiveness of ketamine for treatment-resistant depression along with several other clinical advantages, such as rapid onset and reduced adverse effects associated with serotonin transporter inhibition, has garnered interest in other similar acting psychedelics as novel antidepressant drugs. The antitussive dextromethorphan exhibits glutamate N-methyl-d-aspartate receptor antagonism, sigma-1 receptor agonism, and serotonin reuptake inhibition, which has exhibited antidepressant effects in limited human studies and animal models. The present study sought to further examine dextromethorphan using a differential reinforcement of low-rate 72-s schedule, which can be used to screen antidepressant drugs, in male and female rats. The tricyclic antidepressant drug imipramine and the psychostimulant d-amphetamine also were examined. Sex differences were not shown for baseline performance or for the drugs tested. Further, performance did not differ between the estrus and diestrus stages. Dextromethorphan alone and with quinidine produced an antidepressant-like effect by reducing the number of responses emitted, increasing the number of reinforcers earned, and shifting inter-response times to the right, although significant response suppression occurred at these doses. An antidepressant-like effect was shown with imipramine, but d-amphetamine increased the number of responses emitted and did not affect the number of reinforcers earned. The present findings provide additional support for antidepressant effects produced by dextromethorphan.


Assuntos
Dextroanfetamina/farmacologia , Dextrometorfano/farmacologia , Imipramina/farmacologia , Receptores de N-Metil-D-Aspartato/antagonistas & inibidores , Reforço Psicológico , Animais , Antidepressivos/farmacologia , Comportamento Animal/efeitos dos fármacos , Estimulantes do Sistema Nervoso Central/farmacologia , Monitoramento de Medicamentos/métodos , Antagonistas de Aminoácidos Excitatórios/farmacologia , Feminino , Masculino , Modelos Animais , Ratos , Receptores sigma/agonistas , Inibidores Seletivos de Recaptação de Serotonina/farmacologia , Receptor Sigma-1
6.
PLoS One ; 16(1): e0244151, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33417603

RESUMO

Machine learning approaches are becoming increasingly widespread and are now present in most areas of research. Their recent surge can be explained in part due to our ability to generate and store enormous amounts of data with which to train these models. The requirement for large training sets is also responsible for limiting further potential applications of machine learning, particularly in fields where data tend to be scarce such as developmental biology. However, recent research seems to indicate that machine learning and Big Data can sometimes be decoupled to train models with modest amounts of data. In this work we set out to train a CNN-based classifier to stage zebrafish tail buds at four different stages of development using small information-rich data sets. Our results show that two and three dimensional convolutional neural networks can be trained to stage developing zebrafish tail buds based on both morphological and gene expression confocal microscopy images, achieving in each case up to 100% test accuracy scores. Importantly, we show that high accuracy can be achieved with data set sizes of under 100 images, much smaller than the typical training set size for a convolutional neural net. Furthermore, our classifier shows that it is possible to stage isolated embryonic structures without the need to refer to classic developmental landmarks in the whole embryo, which will be particularly useful to stage 3D culture in vitro systems such as organoids. We hope that this work will provide a proof of principle that will help dispel the myth that large data set sizes are always required to train CNNs, and encourage researchers in fields where data are scarce to also apply ML approaches.


Assuntos
Aprendizado Profundo , Embrião não Mamífero/metabolismo , Peixe-Zebra/metabolismo , Animais , Embrião não Mamífero/patologia , Expressão Gênica , Processamento de Imagem Assistida por Computador , Microscopia Confocal , Cauda/metabolismo , Cauda/patologia , Peixe-Zebra/crescimento & desenvolvimento
7.
Preprint em Inglês | bioRxiv | ID: ppbiorxiv-127589

RESUMO

Several molecular datasets have been recently compiled to characterize the activity of SARS-CoV-2 within human cells. Here we extend computational methods to integrate several different types of sequence, functional and interaction data to reconstruct networks and pathways activated by the virus in host cells. We identify key proteins in these networks and further intersect them with genes differentially expressed at conditions that are known to impact viral activity. Several of the top ranked genes do not directly interact with virus proteins. We experimentally tested treatments for a number of the predicted targets. We show that blocking one of the predicted indirect targets significantly reduces viral loads in stem cell-derived alveolar epithelial type II cells (iAT2s). Software and interactive visualizationhttps://github.com/phoenixding/sdremsc

8.
BMJ Case Rep ; 13(4)2020 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-32303524

RESUMO

A 62-year-old man presented to our institute with diarrhoea and dysuria on a background of subtotal colectomy and end ileostomy and biological therapy for Crohn's disease. He was diagnosed with urinary tract infection and acute kidney injury (AKI). Renal ultrasound suggested left hydronephrosis, with renal protocol computed tomography (CT) showing a large pelvic mass. Magnetic resonance imaging (MRI) of the pelvis demonstrated a rectal tumour invading the bladder and compressing both ureters. He underwent cystoscopy, flexible sigmoidoscopy and positron emission tomography-CT and was diagnosed with stage IV non-Hodgkin's diffuse large B-cell lymphoma. He was treated primarily with rituximab, cyclophosphamide, hydroxydaunomycin, oncovin and prednisolone chemotherapy regimen. He had ongoing urosepsis before admission for pelvic exenteration. He underwent cystoprostatectomy, excision of rectal stump and formation of ileal conduit. Histology showed no signs of residual malignancy. One year later, the patient was admitted to the intensive care unit with aspiration pneumonia, urosepsis and AKI. Despite maximal therapy, he developed multiorgan failure and passed away.


Assuntos
Terapia Biológica/efeitos adversos , Doença de Crohn/terapia , Linfoma Difuso de Grandes Células B/complicações , Neoplasias Retais/complicações , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Terapia Combinada , Ciclofosfamida/uso terapêutico , Diagnóstico Diferencial , Doxorrubicina/uso terapêutico , Evolução Fatal , Humanos , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Prednisona/uso terapêutico , Neoplasias Retais/tratamento farmacológico , Rituximab/uso terapêutico , Vincristina/uso terapêutico
9.
Parasit Vectors ; 13(1): 130, 2020 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-32312309

RESUMO

INTRODUCTION: Babesiosis is a protozoan tick-borne infection associated with anemia and life-threatening disease in humans, domestic and wildlife animals. Dogs are infected by at least six well-characterized Babesia spp. that cause clinical disease. Infection with a piroplasmid species was detected by light microscopy of stained blood smears from five sick dogs from Israel and prompted an investigation on the parasite's identity. METHODS: Genetic characterization of the piroplasmid was performed by PCR amplification of the 18S rRNA and the cytochrome c oxidase subunit 1 (cox1) genes, DNA sequencing and phylogenetic analysis. Four of the dogs were co-infected with Borrelia persica (Dschunkowsky, 1913), a relapsing fever spirochete transmitted by the argasid tick Ornithodoros tholozani Laboulbène & Mégnin. Co-infection of dogs with B. persica raised the possibility of transmission by O. tholozani and therefore, a piroplasmid PCR survey of ticks from this species was performed. RESULTS: The infected dogs presented with fever (4/5), anemia, thrombocytopenia (4/5) and icterus (3/5). Comparison of the 18S rRNA and cox1 piroplasmid gene sequences revealed 99-100% identity between sequences amplified from different dogs and ticks. Phylogenetic trees demonstrated a previously undescribed species of Babesia belonging to the western group of Babesia (sensu lato) and closely related to the human pathogen Babesia duncani Conrad, Kjemtrup, Carreno, Thomford, Wainwright, Eberhard, Quick, Telfrom & Herwalt, 2006 while more moderately related to Babesia conradae Kjemtrup, Wainwright, Miller, Penzhorn & Carreno, 2006 which infects dogs. The piroplasm forms detected included tetrads (Maltese cross), merozoite and trophozoite stages whose average size was larger than stages of other canine Babesia spp. belonging to the Babesia (s.l.) and B. gibsoni Patton, 1910, and smaller than other canine Babesia (sensu stricto) spp. Of 212 O. tholozani ticks surveyed, 11 (5.2%) harbored DNA of the new species of Babesia. CONCLUSIONS: Babesia negevi n. sp. is described based on morphological and genetic characterization and phylogenetic analyses. The species is named after the Negev desert of southern Israel, where the first infected dog originated from. Despite co-infection in four dogs, the fifth dog had fatal disease attesting that B. negevi n. sp. infection requires clinical attention. Incriminating O. tholozani or another tick species as the vector of Babesia negevi n. sp., would require additional studies.


Assuntos
Babesia/classificação , Babesia/patogenicidade , Babesiose/parasitologia , Coinfecção/veterinária , Doenças do Cão/parasitologia , Filogenia , Animais , Babesia/citologia , Babesiose/sangue , Babesiose/diagnóstico , Borrelia/genética , Borrelia/patogenicidade , Coinfecção/microbiologia , Coinfecção/parasitologia , Ciclo-Oxigenase 1/genética , Doenças do Cão/sangue , Cães , Feminino , Israel , Masculino , RNA Ribossômico 18S/genética , Análise de Sequência de DNA , Carrapatos/microbiologia , Carrapatos/parasitologia
10.
Am J Primatol ; 81(12): e23070, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31808195

RESUMO

Tropical forests harbor extremely high levels of biological diversity and are quickly disappearing. Despite the increasingly recognized high rate of habitat loss, it is expected that new species will be discovered as more effort is put to document tropical biodiversity. Exploring under-studied regions is particularly urgent if we consider the rapid changes in habitat due to anthropogenic activities. Madagascar is known for its extraordinary biological diversity and endemicity. It is also threatened by habitat loss and fragmentation. It holds more than 100 endemic primate species (lemurs). Among these, Microcebus (mouse lemurs) is one of the more diverse genera. We sampled mouse lemurs from several sites across northern Madagascar, including forests never sampled before. We obtained morphological data from 99 Microcebus individuals; we extracted DNA from tissue samples of 42 individuals and amplified two mitochondrial loci (cytb and cox2) commonly used for species identification. Our findings update the distribution of three species (Microcebus tavaratra, Microcebus arnholdi, and Microcebus mamiratra), including a major increase in the distribution area of M. arnholdi. We also report the discovery of a new Microcebus lineage genetically related to M. arnholdi. Several complementary approaches suggest that the newly identified Microcebus lineage might correspond to a new putative species, to be confirmed or rejected with additional data. In addition, morphological analyses showed (a) clear phenotypic differences between M. tavaratra and M. arnholdi, but no clear differences between the new Microcebus lineage and the sister species M. arnholdi; and (b) a significant correlation between climatic variables and morphology, suggesting a possible relationship between species identity, morphology, and environment. By integrating morphological, climatic, genetic, and spatial data of two northern Microcebus species, we show that the spatial distribution of forest-dwelling species may be used as a proxy to reconstruct the past spatial changes in forest cover and vegetation type.


Assuntos
Distribuição Animal , Cheirogaleidae/anatomia & histologia , Cheirogaleidae/genética , Animais , Cheirogaleidae/classificação , DNA Mitocondrial/análise , Ecossistema , Madagáscar
11.
Pharmacol Res Perspect ; 7(2): e00468, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30906561

RESUMO

Common variation in the CYP2B6 gene, encoding the cytochrome P450 2B6 enzyme, is associated with substrate-specific altered clearance of multiple drugs. CYP2B6 is a minor contributor to hepatic nicotine metabolism, but the enzyme has been proposed as relevant to nicotine-related behaviors because of reported CYP2B6 mRNA expression in human brain tissue. Therefore, we hypothesized that CYP2B6 variants would be associated with altered nicotine oxidation, and that nicotine metabolism by CYP2B6 would be detected in human brain microsomes. We generated recombinant enzymes in insect cells corresponding to nine common CYP2B6 haplotypes and demonstrate genetically determined differences in nicotine oxidation to nicotine iminium ion and nornicotine for both (S) and (R)-nicotine. Notably, the CYP2B6.6 and CYP2B6.9 variants demonstrated lower intrinsic clearance relative to the reference enzyme, CYP2B6.1. In the presence of human brain microsomes, along with nicotine-N-oxidation, we also detect nicotine oxidation to nicotine iminium ion. However, unlike N-oxidation, this activity is NADPH independent, does not follow Michaelis-Menten kinetics, and is not inhibited by NADP or carbon monoxide. Furthermore, metabolism of common CYP2B6 probe substrates, methadone and ketamine, is not detected in the presence of brain microsomes. We conclude that CYP2B6 metabolizes nicotine stereoselectively and common CYP2B6 variants differ in nicotine metabolism activity, but did not find evidence of CYP2B6 activity in human brain.


Assuntos
Encéfalo/metabolismo , Citocromo P-450 CYP2B6/metabolismo , Microssomos/metabolismo , Nicotina/metabolismo , Polimorfismo de Nucleotídeo Único , Idoso , Idoso de 80 Anos ou mais , Encéfalo/citologia , Citocromo P-450 CYP2B6/genética , Feminino , Humanos , Ketamina/metabolismo , Masculino , Metadona/metabolismo , Pessoa de Meia-Idade , Nicotina/análogos & derivados , Nicotina/química , Oxirredução , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Estereoisomerismo , Tabagismo/genética
12.
Indian J Thorac Cardiovasc Surg ; 35(Suppl 2): 57-66, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33061067

RESUMO

Thoracic aortic aneurysm (TAA), a typically silent but frequently lethal disease, is strongly influenced by underlying genetics. Approximately 30 genes have been associated with syndromic and non-syndromic familial thoracic aortic aneurysm and dissection (TAAD) to date. An estimated 30% of patients with non-syndromic familial TAAD, which is typically inherited in an autosomal dominant manner, have a mutation in one of these genes. The underlying genetic mutation helps predict patients' clinical presentation, risk of aortic dissection at small aortic sizes (< 5.0 cm), and risk of other cardiovascular disease. As a result, a TAAD genomic dictionary based on these genes is necessary to provide optimal patient care, but is not on its own sufficient as this disease is typically inherited with reduced penetrance and has widely variable expressivity. Next-generation sequencing has been and will continue to be critical for identifying novel genes and variants associated with TAAD as well as genotype-phenotype correlations that will allow for management to be targeted to not only the underlying gene harboring the pathogenic variant but also the specific mutation identified. The aortic dictionary, to which a clinician can turn to obtain information on clinical consequences of a specific genetic variants, is not only possible, but has been substantially written already. As additional entries to the dictionary are made, truly personalized, genetically based, aneurysm care can be delivered.

13.
J Int Soc Prevent Communit Dent ; 8(5): 402-408, September - October 2018. tab
Artigo em Inglês | MedCarib | ID: biblio-1368575

RESUMO

Objectives: This preliminary study seeks to determine the relationship between fractured teeth, restorations, prostheses, and specific dietary practices. Methodology: Anonymous questionnaires were randomly distributed to a convenience sample of Trinidadian adults at various locations around the country, after gaining consent. Data were analyzed using the software; Statistical Package for the Social Sciences for significant associations between various types of food and broken teeth or prosthesis using odds ratios. Results: Three hundred questionnaires were completed. Seventy­five percent of the patients preferred crunchy or hard foods and 51% of the respondents liked crushing bones, mostly chicken bones. It was observed that respondents with a dietary preference for fried whole chana, split chana, crab, and sugarcane were significantly associated with broken dentures. Respondents eating whole chana also had a significant association with broken teeth and broken dentures. Associations were found between some dietary preferences, ethnicities, and age groups. Conclusions: Significant associations between age, ethnicity, sex, and certain dietary practices and habits were found. There also appears to be a significant relationship between patients with fractured teeth, restorations, and prostheses with certain dietary preferences.


Assuntos
Humanos , Próteses e Implantes , Trinidad e Tobago , Dentaduras , Região do Caribe , Ingestão de Alimentos , Hábitos
14.
BMJ Case Rep ; 20172017 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-28096225

RESUMO

Here, we present a somewhat unusual suicide attempt where, despite an unbelievable overdose with transdermal fentanyl patches, the patient survived. The patient-a woman aged 70 years, who has suffered from chronic back pain despite starting transdermal fentanyl patches in 2007. The unconventional method of attempted suicide was based on online research into deaths from fentanyl patch toxicity. She had gradually accumulated 100 µg fentanyl patches from repeat prescriptions, applying 14 patches with fatal intent, alongside 2 45 mg mirtazapine tablets, and concurrent therapeutic doses of tramadol and morphine sulfate oral solution. However, after 24 hours, she awoke from a deep sleep to the sound of the telephone ringing, somewhat amazed her drastic efforts had failed. During admission to Great Western hospital, she was seen by liaison psychiatry and subsequently transferred to the care of the pain management team, to which she had already been referred.


Assuntos
Analgésicos Opioides/intoxicação , Overdose de Drogas , Fentanila/intoxicação , Tentativa de Suicídio , Idoso , Dor nas Costas , Dor Crônica , Feminino , Humanos , Adesivo Transdérmico
15.
Nanoscale ; 8(47): 19620-19628, 2016 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-27853794

RESUMO

The free energy associated with transferring a set of fullerene particles through a finite water layer is calculated using explicit solvent molecular dynamic simulations. Each fullerene particle is a carbon network of one or more spheroidal shells of graphitic carbon, and include single-shell (single-wall) or nested multi-shelled (nano-onions) structures ranging from 6 to 28 Å in radius. Corresponding changes in energy suggest a stronger affinity of carbon nano-onions for water compared to their single-shelled analogues. In the case of multi-shelled structures, the free energy profiles display a global minimum only in the bulk liquid indicating a high affinity of multi-shelled fullerene for complete hydration. Single-wall particles however, display a minimum at the air-water interface and for particles larger than 2 nm this minimum is a global minimum possessing a lower energy compared to the particle's state of complete hydration. While the propensity for single-shell particles to adsorb to the air-interface may increase with increasing particle size, there is an indication based on line tension calculations that larger single-shell particles may actually exhibit enhanced wetting compared to their smaller analogues.

16.
Can Vet J ; 57(10): 1072-1076, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27708446

RESUMO

A 6-year-old Labrador retriever dog was presented for acute abdominal pain. A tentative diagnosis of mesenteric thrombosis was established antemortem. The dog was treated with supportive care and anti-coagulation but was ultimately euthanized due to disease-related complications. Necropsy examination confirmed an acute mesenteric thrombus along with widespread thromboembolic disease. Potential causes were protein-losing nephropathy, hepatopathy, and/or corticosteroid administration.


Thrombose mésentérique associée à des thromboses pulmonaire, splénique, portale et cavale chez un chien présenté pour un abdomen aigu. Un Labrador de 6 ans est présenté pour abdomen aigu. Un diagnostic de thrombose mésentérique est établi. Malgré le traitement, l'animal est euthanasié. L'autopsie confirme la thrombose de l'artère mésentérique ainsi que d'autres organes intra-abdominaux. Les causes potentielles sont une fuite urinaire de protéines, une atteinte hépatique, et/ou un traitement stéroïdien.(Traduit par les auteurs).


Assuntos
Abdome Agudo/veterinária , Doenças do Cão/diagnóstico , Mesentério/irrigação sanguínea , Trombose/veterinária , Abdome Agudo/diagnóstico , Abdome Agudo/etiologia , Animais , Anticoagulantes/uso terapêutico , Doenças do Cão/tratamento farmacológico , Doenças do Cão/patologia , Cães , Evolução Fatal , Masculino , Trombose/diagnóstico , Trombose/tratamento farmacológico , Trombose/patologia
17.
J Endod ; 36(1): 123-5, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20003949

RESUMO

INTRODUCTION: The aim of this study was to evaluate apical transportation and working length changes after instrumentation using EndoSequence (Brasseler USA, Savannah, GA) and Guidance V-taper (Guidance Endo, Albuquerque, NM) rotary files. METHODS: Forty-four mesiobuccal and mesiolingual canals of extracted mandibular first and second molars were instrumented by using EndoSequence or Guidance NiTi rotary files. Group 1 (n = 22) was instrumented with EndoSequence #30/.06, #25/.06, and #20/.06 files in a crown-down technique until apical enlargement with #25/.06 was achieved at the working length. Group 2 (n = 22) was instrumented with Guidance #30/.10, #25/.08, and #20/.06 files in a crown-down method until apical enlargement with #25/.08 was reached. A double digital radiographic technique was used to measure the loss of working length and canal transportation at 0, 1, and 3 mm from the working length. Measurements were analyzed by using repeated-measures analysis of variance. RESULTS: The average amount of transportation at 0, 1, and 3 mm was 0.077 mm, 0.039 mm, and 0.040 mm for the EndoSequence group and 0.066 mm, 0.046 mm, and 0.05 mm for the Guidance group, respectively. The loss of working length was 0.001 mm for the EndoSequence group and -0.002 mm for the Guidance group. CONCLUSION: There was no statistically significant difference in the loss of working length or transportation at the measured level between EndoSequence and Guidance rotary files.


Assuntos
Instrumentos Odontológicos/efeitos adversos , Cavidade Pulpar/anatomia & histologia , Preparo de Canal Radicular/instrumentação , Ápice Dentário/anatomia & histologia , Desenho de Equipamento , Humanos , Dente Molar , Odontometria
18.
J Am Acad Dermatol ; 50(5): 657-75; quiz 676-8, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-15097948

RESUMO

UNLABELLED: Interleukin 10 (IL-10) is a key cytokine produced by a multitude of immune effector cells and possesses distinct regulatory effects on immune functioning in the skin. In this article we report the current understanding of the immunobiology of IL-10 and identify the role of IL-10 in cutaneous infection as well as in autoimmune and neoplastic processes. We reviewed the literature to examine the function of IL-10 in different cutaneous disorders. IL-10 can influence and potentially treat T1/T2 differentiation, antigen-presenting cell functioning, antigen-presenting cell-mediated T-cell activation, and T-cell, B-cell, and mast cell growth and differentiation that is aberrant in various disease processes. The literature consensus is that the multitude of effects of IL-10 contribute to the pathogenesis of different skin disorders. In certain circumstances IL-10 could represent novel therapeutic approaches to treating cutaneous diseases. LEARNING OBJECTIVE: At the conclusion of this learning activity, participants should be acquainted with the role of IL-10 in many infectious diseases, autoimmune skin disease, inflammatory processes, and malignancy. Its possible role in the resolution of various skin diseases should be better understood.


Assuntos
Interleucina-10/fisiologia , Dermatopatias/fisiopatologia , Animais , Doenças Autoimunes/imunologia , Doenças Autoimunes/fisiopatologia , Dermatite/imunologia , Dermatite/fisiopatologia , Humanos , Interleucina-10/imunologia , Interleucina-10/uso terapêutico , Psoríase/imunologia , Psoríase/fisiopatologia , Pele/imunologia , Dermatopatias/imunologia , Dermatopatias/terapia , Dermatopatias Infecciosas/imunologia , Dermatopatias Infecciosas/fisiopatologia , Neoplasias Cutâneas/imunologia , Neoplasias Cutâneas/fisiopatologia
19.
Nurs Adm Q ; 27(1): 58-76, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12674069

RESUMO

Successful organizations have the ability to measure and act on key indicators and events in real time. By leveraging the power of virtual instrumentation and open architecture standards, multidimensional executive dashboards can empower health care organizations to make better and faster data-driven decisions. This article will highlight how user-defined virtual instruments and dashboards can connect to hospital information systems (e.g., admissions/discharge/transfer systems, patient monitoring networks) and use statistical process control to "visualize" information and make timely, data-driven decisions. The case studies described will illustrate enterprisewide solutions for: bed management and census control, operational management, data mining and business intelligence applications, and clinical applications (physiological data acquisition and wound measurement and analysis).


Assuntos
Sistemas de Informação Hospitalar/organização & administração , Enfermeiros Administradores/organização & administração , Supervisão de Enfermagem/organização & administração , Interface Usuário-Computador , Ocupação de Leitos , Confidencialidade , Connecticut , Interpretação Estatística de Dados , Técnicas de Apoio para a Decisão , Reestruturação Hospitalar/organização & administração , Humanos , Avaliação de Processos e Resultados em Cuidados de Saúde/organização & administração , Admissão do Paciente/estatística & dados numéricos , Gestão da Qualidade Total/organização & administração
20.
Biomed Instrum Technol ; 37(1): 34-40, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12613292

RESUMO

We modified a system that uses vibrotactile stimulation (VTS) to treat apnea (a cessation of respiration) in neonates in order to make the system more portable and easier to use by clinicians and nurses. The biomedical engineering department at Hartford Hospital (Hartford, CT) together with the Neonatology Division at the Connecticut Children's Medical Center (CCMC) (Hartford, CT) has been involved in developing the VTS system. Clinical trails were conducted in the neonatal intensive care unit of CCMC, and further preliminary data were collected. The main components of the system are a Tacaid vibrotactile stimulator (Audiological Engineering, Somerville, MA), a neonatal physiological monitor (Model 511; CAS Medical Inc, Branford, CT), a laptop computer running Windows 95 by Microsoft, National Instruments' data acquisition cards DAQCard-1200 and DAQCard-5102, and a software application developed by Premise Development Corporation, Hartford, CT. Heart rate, oxygen saturation, pulse, thoracic impedance, nasal airflow, and electrocardiogram are recorded from the monitor to the laptop. Whenever an apneic spell is detected, the nurse has the option of triggering a 3-second, 10-V, 250-Hz square-wave pulse to the transducer. The vibrotactile transducer is placed noninvasively with tape on the infant's thorax. This stimulus should arouse the infant and end the apneic event. To facilitate clinical study, the system provides voice and visual prompts for the clinician and nurses. Preliminary data continue to support both the safety and efficacy of the VTS.


Assuntos
Apneia/terapia , Estimulação Física/instrumentação , Terapia Assistida por Computador/instrumentação , Vibração/uso terapêutico , Apneia/diagnóstico , Desenho de Equipamento , Humanos , Recém-Nascido , Resultado do Tratamento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...