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1.
Am J Emerg Med ; 82: 75-81, 2024 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-38820809

RESUMO

OBJECTIVE: Artificial intelligence (AI) has emerged as a potentially transformative force, particularly in the realm of emergency medicine (EM). The implementation of AI in emergency departments (ED) has the potential to improve patient care through various modalities. However, the implementation of AI in the ED presents unique challenges that influence its clinical adoption. This scoping review summarizes the current literature exploring the barriers and facilitators of the clinical implementation of AI in the ED. METHODS: We systematically searched Embase (Ovid), MEDLINE (Ovid), Web of Science, and Engineering Village. All articles were published in English through November 20th, 2023. Two reviewers screened the search results, with disagreements resolved through third-party adjudication. RESULTS: A total of 8172 studies were included in the preliminary search, with 22 selected for the final data extraction. 10 studies were reviews and the remaining 12 were primary quantitative, qualitative, and mixed-methods studies. Out of the 22, 13 studies investigated a specific AI tool or application. Common barriers to implementation included a lack of model interpretability and explainability, encroachment on physician autonomy, and medicolegal considerations. Common facilitators to implementation included educating staff on the model, efficient integration into existing workflows, and sound external validation. CONCLUSION: There is increasing literature on AI implementation in the ED. Our research suggests that the most common barrier facing AI implementation in the ED is model interpretability and explainability. More primary research investigating the implementation of specific AI tools should be undertaken to help facilitate their successful clinical adoption in the ED.

2.
J Postgrad Med ; 69(3): 164-171, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37082991

RESUMO

Porphyrias are a rare group of inborn errors of metabolism due to defects in the heme biosynthetic pathway. The biochemical hallmark is the overproduction of porphyrin precursors and porphyrin species. Afflicted patients present with a myriad of symptoms causing a diagnostic odyssey. Symptoms often overlap with those of common diseases and may be overlooked unless there is heightened clinical suspicion. We are reporting clinical features and diagnostic challenges in four pediatric patients having variegate porphyria, congenital erythropoietic porphyria, acute intermittent porphyria, and erythropoietic protoporphyria (EPP), who presented with diverse multisystem manifestations. This case series illustrates a logical analysis of symptoms and judicious selection of investigations and the role of genotyping in successfully diagnosing porphyrias.


Assuntos
Porfiria Aguda Intermitente , Porfirias , Porfirinas , Criança , Humanos , Porfirias/diagnóstico , Porfiria Aguda Intermitente/diagnóstico
3.
Artigo em Inglês | MEDLINE | ID: mdl-36817165

RESUMO

In this research article, an improved Multi-criteria group decision-making (MCGDM) strategy has been developed in pentagonal neutrosophic environment incorporating grey relational analysis and method on the removal effects of criteria (MEREC) techniques to address the relative advantages and disadvantages of these aspects in MCGDM. The aim of the study is to improve MCGDM technique which can capture the underlying uncertainties in robust way and can produce consistent results in a more rigorous way. Here, the conception of Hamming distance between two pentagonal neutrosophic number (PNN)s is introduced and the weighted arithmetic and geometric averaging operators in PNN arena are deployed to craft our computational technique more progressive and robust. An agriculture-based numerical problem is illustrated to demonstrate the ranking results of the alternatives by both of the techniques. After evaluating the problem by two aggregation operators, it is found that "plantation crop" is the best alternative under certain circumstances. Lastly, the sensitivity investigation is performed which reveals that with the appliance of arithmetic and geometric aggregation operators the best ranked alternative preserves its position by both of the ranking methods, which definitely exhibit the consistency and robustness of our executed methodology.

4.
Phys Rev Lett ; 126(15): 153401, 2021 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-33929220

RESUMO

We prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the spin-stretched component of the first rotationally excited state, they collide inelastically with a rate coefficient k_{2}=(6.6±1.5)×10^{-11} cm^{3}/s at temperatures near 100 µK. We attribute this to rotation-changing collisions. When the molecules are in the ground rotational state we see no inelastic loss and set an upper bound on the spin-relaxation rate coefficient of k_{2}<5.8×10^{-12} cm^{3}/s with 95% confidence. We compare these measurements to the results of a single-channel loss model based on quantum defect theory. The comparison suggests a short-range loss parameter close to unity for rotationally excited molecules, but below 0.04 for molecules in the rotational ground state.

5.
Br J Dermatol ; 185(2): 294-301, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33660254

RESUMO

In metastatic melanoma, with a dismal survival rate and propensity for treatment resistance and recurrence, it is critical to establish biomarkers that better predict treatment response and disease severity. The melanoma glycome, composed of complex carbohydrates termed glycans, is an under-investigated area of research, although it is gaining momentum in the cancer biomarker and therapeutics field. Novel findings suggest that glycans play a major role in influencing melanoma progression and could be exploited for prognosticating metastatic activity and/or as therapeutic targets. In this review, we discuss the role of aberrant glycosylation, particularly the specialized function of ß1,6 N-acetylglucosaminyltransferase 2 (GCNT2), in melanoma pathogenesis and summarize mechanisms of GCNT2 regulation to illuminate its potential as a predictive marker and therapeutic target.


Assuntos
Glicosiltransferases , Melanoma , Biomarcadores , Linhagem Celular Tumoral , Humanos , N-Acetilglucosaminiltransferases/genética , N-Acetilexosaminiltransferases , Recidiva Local de Neoplasia
6.
J Appl Microbiol ; 128(1): 2-14, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31038778

RESUMO

Use of bacteria in cancer therapy, despite being considered as a potent strategy, has not really picked up the way other methods of cancer therapies have evolved. However, in recent years, the interest on use of bacteria to kill cancer cells has renewed considerably. The standard and widely followed strategies of cancer treatment often fail either due to the complexity of tumour biology or because of the accompanying side effects. In contrast, these limitations can be easily overcome in a bacteria-mediated approach. Salmonella is a bacterium, which is known for its ability to colonize solid or semisolid tumours more efficiently than any other bacteria. Among more than 2500 serovars of Salmonella, S. Typhimurium has been widely studied for its antagonistic effects on cancer cells. Here in, we review the current status of the preclinical and the clinical studies with a focus on the mechanisms that attribute the anticancer properties to nontyphoidal Salmonella.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias/terapia , Salmonella/fisiologia , Animais , Humanos , Neoplasias/microbiologia , Salmonella/crescimento & desenvolvimento , Salmonella typhimurium/crescimento & desenvolvimento , Salmonella typhimurium/fisiologia
7.
Arch Virol ; 164(9): 2255-2263, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31183556

RESUMO

Samples of leaves exhibiting symptoms resembling those caused by virus infection were collected from ornamental street flowers in a rural town in Western Australia. Thirty-seven leaf samples were collected from plants of iris, tulip, lily, daffodil, stock and grape hyacinth. Shotgun sequencing of cDNA derived from leaf samples was done, and analysis showed that about 6% of the sequences obtained were of viral origin. Assembly of virus-like sequences revealed complete or partial genome sequences of 13 virus isolates representing 11 virus species. Eight of the isolates were of potyviruses, one was of a macluravirus, three were of potexviruses, and one was of a bunya-like virus. The complete genome of an isolate originally classified as ornithogalum mosaic virus was genetically divergent and differed in polyprotein cleavage motifs, and we propose that this isolate represents a distinct species. The implications of importing to Australia live plant propagules infected with viruses are discussed.


Assuntos
Doenças das Plantas/virologia , Vírus de Plantas/isolamento & purificação , Plantas/virologia , Austrália , Flores/virologia , Genes Virais , Genoma Viral , Filogenia , Folhas de Planta/virologia , Vírus de Plantas/classificação , Vírus de Plantas/genética
8.
Eur J Pediatr ; 177(1): 39-45, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29063209

RESUMO

Iodine nutritional status of 128 lactating mothers and their breast-fed infants (1-3 months) from iodine-replete villages during post-salt iodization period was evaluated. Mothers' urine, blood, and breast milk (BM) and infants' urine and blood were collected and analyzed for iodine and serum FT4 and TSH estimation. Mothers' and infants' age, parity, occupation, education, and household income were recorded. Median urinary iodine concentration (UIC) of infants was 250 µg/L, indicating their iodine intake was more than adequate. Mothers' median UIC was 185 µg/L, indicating adequate iodine nutrition; however, 13.28% had mild to severe deficiency. Median breast milk iodine concentration (BMIC) was 230 µg/L, which was more than their median UIC 185 µg/L. In iodine-deficient mothers, positive correlation was found between mothers' and infants' serum FT4 and TSH levels, and negative correlation was found between mothers' and infants' serum FT4 and TSH levels in excessive iodine nutrition group. CONCLUSION: Iodine intake of breast-fed infants was at the limit of above requirement, and they are possibly at the risk of excess iodine intake. In iodine deficient and excessive iodine intake mothers, their infants' serum FT4 and TSH are independent on their iodine nutritional status but dependent on thyroid hormone profile of their mothers but differently. What is Known: • A median urinary iodine of 100 µg/L is used to define adequate iodine intake of lactating mothers and children < 2 years. However, adequate iodine intake in terms of urinary iodine of infants of age 1-3 months is not known. What is New: • Iodine intake of absolutely breast-fed infants (1-3 months) was more than adequate, though their mother's intake was adequate as breast milk contains more iodine than urine. The infants of iodine deficient and excessive iodine intake mothers, infants' hormonal profile is independent of their iodine nutritional status but dependent on their mothers thyroid hormone profile.


Assuntos
Aleitamento Materno , Iodo/análise , Lactação , Estado Nutricional , Saúde da População Rural , Adolescente , Adulto , Estudos Transversais , Suplementos Nutricionais , Feminino , Humanos , Índia , Lactente , Iodo/deficiência , Masculino , Leite Humano/química , Avaliação Nutricional , Inquéritos Nutricionais , Cloreto de Sódio na Dieta , Adulto Jovem
9.
Epidemiol Infect ; 144(2): 371-80, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26122675

RESUMO

Drinking raw date palm sap is the primary route of Nipah virus (NiV) transmission from bats to people in Bangladesh; subsequent person-to-person transmission is common. During December 2010 to March 2011, we investigated NiV epidemiology by interviewing cases using structured questionnaires, in-depth interviews, and group discussions to collect clinical and exposure histories. We conducted a case-control study to identify risk factors for transmission. We identified 43 cases; 23 were laboratory-confirmed and 20 probable. Thirty-eight (88%) cases died. Drinking raw date palm sap and contact with an infected person were major risk factors; one healthcare worker was infected and for another case transmission apparently occurred through contact with a corpse. In absence of these risk factors, apparent routes of transmission included drinking fermented date palm sap. For the first time, a case was detected in eastern Bangladesh. Identification of new epidemiological characteristics emphasizes the importance of continued NiV surveillance and case investigation.


Assuntos
Surtos de Doenças , Infecções por Henipavirus/epidemiologia , Infecções por Henipavirus/transmissão , Vírus Nipah/isolamento & purificação , Vírus Nipah/fisiologia , Adolescente , Adulto , Bangladesh/epidemiologia , Estudos de Casos e Controles , Criança , Pré-Escolar , Infecções por Henipavirus/mortalidade , Infecções por Henipavirus/virologia , Humanos , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
10.
J Phys Chem A ; 120(27): 4805-11, 2016 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-26837823

RESUMO

Four electronic systems with origin bands at 759.5, 559.3, 476.3, and 385.5 nm are detected in a 6 K neon matrix following deposition of mass-selected protonated fluoranthene C16H11(+) produced from a reaction of neutral vapor and ethanol in a hot-cathode ion source. Two cationic isomers are identified as the carriers of these band systems. The 559.3, 476.3, and 385.5 nm absorptions are assigned to 4,3,2 (1)A' ← X (1)A' transitions of isomer E(+) (γ-) and the 2 (1)A' ← X (1)A' system at 759.5 nm is of isomer C(+) (α-) of protonated fluoranthene on the basis of theoretical predictions. The electronic spectrum of E(+) was also recorded in the gas phase using a resonant 1 + 1 two-photon excitation-dissociation technique in an ion trap at vibrational and rotational temperatures of 10 K. The 3,2 (1)A' ← X (1)A' transitions have origin band maxima at 558.28 ± 0.01 and 474.92 ± 0.01 nm. Both the 2 (1)A' and 3 (1)A' excited states have a distinct vibrational pattern with lifetimes on the order of 1 ps.

11.
Curr Microbiol ; 72(3): 248-58, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26612034

RESUMO

The present study emphasizes the potential of gamma radiation in enhancing zinc tolerance of Aspergillus terreus. Gamma-exposed A. terreus could tolerate 1.13 times more Zn, reflecting higher growth (in terms of CFU) under Zn stress and enhanced Zn removal efficacies than their unirradiated counterparts. Radiation-induced upregulation of antioxidative system (SOD, CAT, GSH and MT) of A. terreus is responsible for radiation-induced enhancement of Zn tolerance. FTIR spectra reveals the involvement of functional groups in Zn biosorption; SEM study divulges the structural changes due to metal and gamma exposure and SEM-EDX depicts the Zn uptake by A. terreus (both in gamma-exposed and unexposed conditions). This work sheds light toward utilizing low doses of ionizing radiation for making more metal-tolerant fungi and the possible mechanisms adopted by A. terreus for being more metallo-resistant.


Assuntos
Aspergillus/efeitos dos fármacos , Aspergillus/efeitos da radiação , Tolerância a Medicamentos , Raios gama , Zinco/toxicidade , Antioxidantes/metabolismo , Aspergillus/crescimento & desenvolvimento , Aspergillus/metabolismo , Contagem de Colônia Microbiana , Viabilidade Microbiana/efeitos dos fármacos , Microscopia Eletrônica de Varredura , Espectrometria por Raios X
13.
Mol Psychiatry ; 19(3): 284-93, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23439485

RESUMO

Glycogen synthase kinase 3 (GSK3), a prominent enzyme in carbohydrate metabolism, also has a major role in brain function. It is physiologically regulated by the kinase Akt, which phosphorylates GSK3 to inhibit catalytic activity. Inositol hexakisphosphate-1 (IP6K1) generates the inositol pyrophosphate diphosphoinositol pentakisphosphate (IP7), which physiologically inhibits Akt leading to enhanced GSK3 activity. We report that IP6K1 binds and stimulates GSK3 enzymatic activity in a non-catalytic fashion. Physiological relevance is evident in the inhibition of GSK3 activity in the brains of IP6K1-deleted mice. Behavioral alterations of IP6K1 knockout mice resemble those of GSK3 mutants. Accordingly, modulation of IP6K1-GSK3ß interaction may exert beneficial effects in psychiatric disorders involving GSK3.


Assuntos
Quinase 3 da Glicogênio Sintase/metabolismo , Atividade Motora/fisiologia , Fosfotransferases (Aceptor do Grupo Fosfato)/fisiologia , Transdução de Sinais , Comportamento Social , Anfetamina/farmacologia , Animais , Masculino , Camundongos , Camundongos Knockout , Atividade Motora/efeitos dos fármacos , Atividade Motora/genética , Fosfotransferases (Aceptor do Grupo Fosfato)/genética , Fosfotransferases (Aceptor do Grupo Fosfato)/metabolismo , Ligação Proteica , Teste de Desempenho do Rota-Rod
14.
Epidemiol Infect ; 142(9): 1848-58, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24720882

RESUMO

Socio-behavioural factors and pathogens associated with childhood diarrhoea are of global public health concern. Our survey in 696 children aged ⩽2 years in rural West Bengal detected rotavirus as sole pathogen in 8% (17/199) of diarrhoeic stool specimens. Other organisms were detected along with rotavirus in 11% of faecal specimens. A third of the children with rotavirus diarrhoea, according to Vesikari score, had severe illness. The top four rotavirus genotypes were G9P[4] (28%), G1P[8] (19%), G2P[4] (14%) and G8P[4] (8%). In the multivariate model, the practice of 'drawing drinking water by dipping a pot in the storage vessel' [adjusted odds ratio (aOR) 2·21, 95% confidence interval (CI) 1·03-4·74, P = 0·041], and 'children aged ⩽6 months with non-exclusive breastfeeding' (aOR 2·07, 95% CI 1·1-3·82, P = 0·024) had twice the odds of having diarrhoea. Incidence of rotavirus diarrhoea was 24/100 child-years in children aged >6-18 months, 19/100 child-years in children aged >18-24 months and 5/100 child-years in those aged ⩽6 months. Results have translational implications for future interventions including vaccine development.


Assuntos
Diarreia/epidemiologia , Infecções por Rotavirus/epidemiologia , População Rural , Fezes/virologia , Feminino , Humanos , Incidência , Índia/epidemiologia , Lactente , Masculino , Razão de Chances , Fatores de Risco , Rotavirus/genética , Rotavirus/isolamento & purificação
15.
Water Environ Res ; 86(6): 524-31, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25109198

RESUMO

This study describes the potential use of steel-making slag as an arsenic-removal medium. Systematic analysis of slag material revealed a composition of oxides of calcium, iron, silicon, and phosphorous. Under the experimental conditions of this study, the equilibrium time was shown to be 2 hours, and the removal capacity to be 99%, with an adsorbent loading capacity of 1.25g/l. The adsorption kinetics were shown to follow a pseudo-second-order rate equation, and the adsorption isotherm closely followed both the Langmuir and Freundlich isothermic models. Variations in solution pH levels demonstrated that with a decrease in the initial solution pH, the adsorption capacity decreases. This is attributed to the leaching of silica and phosphate from the slag to the solution, which imparted a competing effect for adsorption sites. However, with an alkaline pH, such leaching was reduced, and due to formation of calcium carbonate from the leached calcium from the slag material, the arsenic removal efficiency increased as it was co-precipitated with calcium carbonate.


Assuntos
Arsênio/química , Resíduos Industriais/análise , Aço/química , Poluentes Químicos da Água/química , Adsorção , Cinética , Microscopia Eletrônica de Varredura , Água/química
17.
Mymensingh Med J ; 23(2): 401-5, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24858176

RESUMO

Uterine prolapse is commonly seen in the geriatric age group. Congenital vaginouterine prolapse is a rare condition occurring in neonates and is usually associated with spinal cord malformations in about 85% of cases. Several modalities of treatment have been described for neonatal uterine prolapse. Conservative treatment in the form of simple digital reposition, use of pessary or other self-retaining device is usually sufficient to treat this condition, which is self-limiting and regressive. Here we report our first case of neonatal uterine prolapse, managed successfully with simple digital reposition.


Assuntos
Prolapso Uterino/congênito , Prolapso Uterino/terapia , Feminino , Humanos , Recém-Nascido , Prolapso Uterino/diagnóstico
18.
Plant Biol (Stuttg) ; 26(2): 145-156, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38194349

RESUMO

Mycorrhization has been an integral part of plants since colonization by the early land plants. Over decades, substantial research has highlighted its potential role in improving nutritional efficiency and growth, development and survival of crop plants. However, the focus of this review is trees. Evidence have been provided to explain ecological and physiological significance of mycorrhization in trees. Advances in recent technologies (e.g., metagenomics, artificial intelligence, machine learning, agricultural drones) may open new windows to apply this knowledge in promoting tree growth in forest ecosystems. Dual mycorrhization relationships in trees and even triple relationships among trees, mycorrhizal fungi and bacteria offer an interesting physiological system to understand how plants interact with other organisms for better survival. Besides, studies indicate additional roles of mycorrhization in learning, memorizing and communication between host trees through a common mycorrhizal network (CMN). Recent observations in trees suggest that mycorrhization may even promote tolerance to multiple abiotic (e.g., drought, salt, heavy metal stress) and biotic (e.g. fungi) stresses. Due to the extent of physiological reliance, local adaptation of trees is heavily impacted by the mycorrhizal community. This knowledge opens the possibility of a non-GMO avenue to promote tree growth and development. Indeed, mycorrhization could impact growth of trees in nurserys and subsequent survival of the inoculated trees in field conditions. Future studies might integrate hyperspectral imaging and drone technologies to identify tree communities that are deficient in nitrogen and spray mycorrhizal spore formulations on them.


Assuntos
Micorrizas , Árvores , Raízes de Plantas , Ecossistema , Inteligência Artificial , Micorrizas/fisiologia , Plantas/microbiologia
19.
Phys Rev Lett ; 110(2): 022504, 2013 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-23383898

RESUMO

Based on results from a measurement of weak decay branches observed following the ß- decay of 94Y and on lifetime data from a study of 94Zr by inelastic neutron scattering, collective structure is deduced in the closed-subshell nucleus 94Zr. These results establish shape coexistence in 94Zr. The role of subshells for nuclear collectivity is suggested to be important.

20.
World J Microbiol Biotechnol ; 29(5): 789-803, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23239372

RESUMO

Soil microorganisms with potential for alleviation of abiotic stresses in combination with plant growth promotion would be extremely useful tools in sustainable agriculture. To this end, the present study was initiated where forty-five salt tolerant bacterial isolates with ability to grow in high salt medium were obtained from the rhizosphere of Triticum aestivum and Imperata cylindrica. These bacteria were tested for plant-growth-promoting rhizobacteria traits in vitro such as phosphate solubilization, siderophore, ACC deaminase and IAA production. Of the forty-five isolates, W10 from wheat rhizosphere and IP8 from blady grass rhizosphere, which tested positive in all the tests were identified by morpholological, biochemical and 16SrDNA sequencing as Bacillus safensis and Ochrobactrum pseudogregnonense respectively and selected for in vivo studies. Both the bacteria could promote growth in six varieties of wheat tested in terms of increase in root and shoot biomass, height of plants, yield, as well as increase in chlorophyll content. Besides, the wheat plants could withstand water stress more efficiently in presence of the bacteria as indicated by delay in appearance of wilting symptoms increases in relative water content of treated water stressed plants in comparison to untreated stressed ones, and elevated antioxidant responses. Enhanced antioxidant responses were evident as elevated activities of enzymes such as catalase, peroxidase, ascorbate peroxidase, superoxide dismutase and glutathione reductase as well as increased accumulation of antioxidants such as carotenoids and ascorbate. Results clearly indicate that the ability of wheat plants to withstand water stress is enhanced by application of these bacteria which also function as plant growth promoting rhizobacteria.


Assuntos
Bactérias/metabolismo , Microbiologia do Solo , Triticum/crescimento & desenvolvimento , Triticum/microbiologia , Água/metabolismo , Bactérias/classificação , Bactérias/genética , Bactérias/isolamento & purificação , Dados de Sequência Molecular , Filogenia , Raízes de Plantas/crescimento & desenvolvimento , Raízes de Plantas/microbiologia , Rizosfera , Cloreto de Sódio/metabolismo , Triticum/metabolismo
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