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1.
Int J Equity Health ; 21(Suppl 3): 193, 2023 01 24.
Artigo em Inglês | MEDLINE | ID: mdl-36694195

RESUMO

Since the 2008 publication of the reports of the Commission on Social Determinants of Health and its nine knowledge networks, substantial research has been undertaken to document and describe health inequities. The COVID-19 pandemic has underscored the need for a deeper understanding of, and broader action on, the social determinants of health. Building on this unique and critical opportunity, the World Health Organization is steering a multi-country Initiative to reduce health inequities through an action-learning process in 'Pathfinder' countries. The Initiative aims to develop replicable and reliable models and practices that can be adopted by WHO offices and UN staff to address the social determinants of health to advance health equity. This paper provides an overview of the Initiative by describing its broad theory of change and work undertaken in three regions and six Pathfinder countries in its first year-and-a-half. Participants engaged in the Initiative describe results of early country dialogues and promising entry points for implementation that involve model, network and capacity building. The insights communicated through this note from the field will be of interest for others aiming to advance health equity through taking action on the social determinants of health, in particular as regards structural determinants.


Assuntos
COVID-19 , Equidade em Saúde , Humanos , Determinantes Sociais da Saúde , Pandemias , Disparidades nos Níveis de Saúde , Organização Mundial da Saúde , Política de Saúde
2.
Lancet ; 397(10273): 533-542, 2021 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-33503459

RESUMO

Armed conflict disproportionately affects the morbidity, mortality, and wellbeing of women, newborns, children, and adolescents. Our study presents insights from a collection of ten country case studies aiming to assess the provision of sexual, reproductive, maternal, newborn, child, and adolescent health and nutrition interventions in ten conflict-affected settings in Afghanistan, Colombia, Democratic Republic of the Congo, Mali, Nigeria, Pakistan, Somalia, South Sudan, Syria, and Yemen. We found that despite large variations in contexts and decision making processes, antenatal care, basic emergency obstetric and newborn care, comprehensive emergency obstetric and newborn care, immunisation, treatment of common childhood illnesses, infant and young child feeding, and malnutrition treatment and screening were prioritised in these ten conflict settings. Many lifesaving women's and children's health (WCH) services, including the majority of reproductive, newborn, and adolescent health services, are not reported as being delivered in the ten conflict settings, and interventions to address stillbirths are absent. International donors remain the primary drivers of influencing the what, where, and how of implementing WCH interventions. Interpretation of WCH outcomes in conflict settings are particularly context-dependent given the myriad of complex factors that constitute conflict and their interactions. Moreover, the comprehensiveness and quality of data remain limited in conflict settings. The dynamic nature of modern conflict and the expanding role of non-state armed groups in large geographic areas pose new challenges to delivering WCH services. However, the humanitarian system is creative and pluralistic and has developed some novel solutions to bring lifesaving WCH services closer to populations using new modes of delivery. These solutions, when rigorously evaluated, can represent concrete response to current implementation challenges to modern armed conflicts.


Assuntos
Conflitos Armados , Atenção à Saúde/organização & administração , Socorro em Desastres/organização & administração , Adolescente , Saúde do Adolescente , Adulto , Criança , Saúde da Criança , Feminino , Humanos , Masculino , Refugiados/estatística & dados numéricos , Socorro em Desastres/estatística & dados numéricos , Saúde da Mulher
3.
J Clin Microbiol ; 60(4): e0240821, 2022 04 20.
Artigo em Inglês | MEDLINE | ID: mdl-35369709

RESUMO

Genome sequencing is a powerful tool for identifying SARS-CoV-2 variant lineages; however, there can be limitations due to sequence dropout when used to identify specific key mutations. Recently, ThermoFisher Scientific has developed genotyping assays to help bridge the gap between testing capacity and sequencing capability to generate real-time genotyping results based on specific variants. Over a 6-week period during the months of April and May 2021, we set out to assess the ThermoFisher TaqMan mutation panel genotyping assay, initially for three mutations of concern and then for an additional two mutations of concern, against SARS-CoV-2-positive clinical samples and the corresponding COVID-19 Genomics UK Consortium (COG-UK) sequencing data. We demonstrate that genotyping is a powerful in-depth technique for identifying specific mutations, is an excellent complement to genome sequencing, and has real clinical health value potential, allowing laboratories to report and take action on variants of concern much more quickly.


Assuntos
COVID-19 , SARS-CoV-2 , COVID-19/diagnóstico , Teste para COVID-19 , Humanos , Mutação , SARS-CoV-2/genética
4.
J Genet Couns ; 28(4): 887-896, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31058411

RESUMO

Misinformation and distrust often prevent individuals from minority communities to seek adequate healthcare, including genetic services. Immigrants appear to be further burdened by factors that negatively impact their health outcomes and little is known about their experience with genetic services. We sought to identify attitudes and perception of genetic services in one immigrant group, the Somali community of Minnesota and to establish a culturally informed framework for caring for members. A qualitative study comprised of 11 semi-structured key informant interviews was conducted and analyzed using a thematic approach. Main themes emerged from the analysis fell within one of four major topics: (a) Somali views and perspective on genetics and healthcare, (b) barriers to uptake of genetic services, (c) facilitators to uptake of genetic services, and (d) perspective on genetic service delivery subtypes. Somali views and perspective on genetics are often framed by religious and cultural values. These values, at times, conflicted with those common in the American healthcare system. Supports for different genetic service delivery subtypes also varied, ranging from little to no support in prenatal screening to generally positive support for pharmacogenetic testing. Future studies should prioritize topics with support and ways to better provide genetic counseling services within the Somali community.


Assuntos
Competência Cultural , Emigrantes e Imigrantes , Serviços em Genética , Adulto , Feminino , Predisposição Genética para Doença , Humanos , Masculino , Minnesota , Gravidez , Pesquisa Qualitativa , Somália/etnologia
5.
J Genet Couns ; 27(2): 329-338, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29362948

RESUMO

In 2009, the National Society of Genetic Counselors Service (NSGC) Delivery Model Task Force defined genetic counseling service delivery models including telephone (genetic counseling provided remotely by telephone) and telegenetics (counseling provided remotely using videoconferencing). Little is known about the experience of genetic counselors practicing telemedicine in the USA. We sought to evaluate perceived satisfaction, advantages, disadvantages, and barriers to the practice and implementation of telegenetics by practicing genetic counselors. A 21-question online survey was distributed via the NSGC's member directory. Descriptive statistics and a thematic analysis were used to analyze data. A total of 344 surveys were completed of which 235 (68.3%) respondents had delivered genetic counseling via telemedicine and 109 (36.6%) had not. Overall genetic counseling providers who had provided telegenetics were satisfied or very satisfied with their position (91%) and those who were not performing telegenetics were at least slightly interested in a telehealth position (92%).The most common appealing reasons for working in or wanting to work in telemedicine included an innovative approach to healthcare delivery, aspects of remote positions such as the ability to work from home, and flexibility of hours. Unappealing characteristics of telemedicine included the inability to see nonverbals, limited psychosocial counseling, and limited social interaction with colleague that is associated with remote positions. Barriers to implementation of telegenetics were noted by 53% of respondents with the largest barrier being billing and reimbursement. The results of this work suggest that telegenetics service organizations could consider increasing social interactions, attempting to use the preferred method of care (video) to increase ability to see nonverbals, offering flexible work hours, and allowing time to address psychosocial issues as they arise in consultations.


Assuntos
Conselheiros/psicologia , Aconselhamento Genético/métodos , Telemedicina/métodos , Adulto , Humanos , Satisfação no Emprego , Masculino , Encaminhamento e Consulta , Inquéritos e Questionários , Telefone , Comunicação por Videoconferência
7.
BMJ Case Rep ; 17(1)2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-38296509

RESUMO

A fit man in his 60s presented with an infected Achilles tendon (AT) following two failed repairs for a traumatic rupture. Initial debridement of necrotic tissue resulted in a large soft tissue defect requiring robust coverage. Following aggressive wound management, an anterolateral thigh flap was elevated with tensor fasciae latae (TFL) which was triple-rolled to provide soft tissue coverage and tendon reconstruction.The flap remained healthy and was monitored with a flow coupler device. Initially, the foot was placed in plantarflexion before gradually increasing the angle to neutral and a thermoplastic splint was used to offload pressure on the flap. Following 1 month of non-weight-bearing, gentle mobilisation began. Three months postoperatively, the patient could walk, had resumed indoor cycling and demonstrated a comparable heel raise with the contralateral side. MRI showed a taut TFL attached to the distal AT and ultrasound showed a smoothly gliding TFL.


Assuntos
Tendão do Calcâneo , Lesões dos Tecidos Moles , Masculino , Humanos , Coxa da Perna , Lesões dos Tecidos Moles/cirurgia , Resultado do Tratamento , Retalhos Cirúrgicos , Tendão do Calcâneo/cirurgia , Tendão do Calcâneo/lesões
8.
Q J Exp Psychol (Hove) ; 77(2): 308-325, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37129461

RESUMO

Self-cues such as personal pronouns are known to elicit processing biases, such as attention capture and prioritisation in working memory. This may impact the performance of tasks that have a high attentional load like mathematical problem-solving. Here, we compared the speed and accuracy with which children solved numerical problems that included either the self-cue "you," or a different character name. First, we piloted a self-referencing manipulation with N = 52, 7 to 11 year-olds, testing performance on addition and subtraction problems that had either a single referent ("You"/"Sam") or more than one referent. We took into account operation and positioning of the pronoun and also measured performance on attention and working memory tasks. We found a robust accuracy advantage for problems that included "you," regardless of how many characters were included. The accuracy advantage for problems with a self-pronoun was not statistically associated with individual differences in attention or working memory. In our main study (9 to 11 year-olds, N = 144), we manipulated problem difficulty by creating consistently and inconsistently worded addition and subtraction problems. We found significantly higher speed and accuracy for problems that included "you." However, this effect varied by task difficulty, with the self-pronoun effect being strongest in the most difficult inconsistently worded, subtraction problems. The advantage of problems with a self-pronoun was not associated with individual differences in working memory. These findings suggest that self-cues like the pronoun "you" can be usefully applied in numerical processing tasks, an effect that may be attributable to the effects of self-cues on attention.


Assuntos
Idioma , Resolução de Problemas , Criança , Humanos , Sinais (Psicologia) , Memória de Curto Prazo , Atenção
9.
Br J Dev Psychol ; 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38660978

RESUMO

The self-memory system depends on the prioritization and capture of self-relevant information, so may be disrupted by difficulties in attending to, encoding and retrieving self-relevant information. The current study compares memory for self-referenced and other-referenced items in children with ADHD and typically developing comparison groups matched for verbal and chronological age. Children aged 5-14 (N = 90) were presented with everyday objects alongside an own-face image (self-reference trials) or an unknown child's image (other-referenced trials). They were asked whether the child shown would like the object, before completing a surprise source memory test. In a second task, children performed, and watched another person perform, a series of actions before their memory for the actions was tested. A significant self-reference effect (SRE) was found in the typically developing children (i.e. both verbal and chronological age-matched comparison groups) for the first task, with significantly better memory for self-referenced than other-referenced objects. However, children with ADHD showed no SRE, suggesting a compromised ability to bind information with the cognitive self-concept. In the second task, all groups showed superior memory for actions carried out by the self, suggesting a preserved enactment effect in ADHD. Implications and applications for the self-memory system in ADHD are discussed.

10.
Br J Oral Maxillofac Surg ; 62(2): 128-139, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38290862

RESUMO

Ptosis is an abnormally low-positioned upper eyelid. Management depends on severity, aetiology, and function of the levator palpebrae superioris muscle (LPS). This review evaluates the success of autogenous fascia lata slings (AFLS) in the surgical management of ptosis, together with complication and reoperation/revision rates. A literature search was conducted on PubMed, Google Scholar PROSPERO, Dynamed, DARE, EMBASE, Cochrane, and BMJ databases (PROSPERO registration: CRD42023475090), and 30 studies (3690 patients and 5059 eyes) were included. The average age of the patients was 14.2 years with a ratio of male:female patients of 1:0.7. A total of 2532 eyes had undergone a fascial sling with autogenous fascia lata. The average follow-up period was 32.6 months. Improvement in the margin to reflex distance 1 (MRD1) with fascial sling surgery was 2.79 mm. The rate of complications from surgery involving autogenous fascia lata was 21.3%. The most common complications included lagophthalmos (19.8%), residual ptosis (11.5%), and corneal damage (10.4%). The reoperation rate was 13.4%. Most common indications for reoperation were cosmetic, with asymmetry (18%), lid crease abnormalities (30%), and upper eyelid trimming (18%). The overall complication rate in AFLS patients was 20% (95% CI: 6 to 35, p < 0.01; I2 = 89%) versus 27% (95% CI: 14 to 40, p < 0.01; I2 = 90%) in non-AFLS patients. AFLSs are prudent in the surgical management of ptosis. The results of this review demonstrate that their use is associated with similar complication rates but fewer reoperations than other traditional techniques.


Assuntos
Blefaroptose , Fascia Lata , Humanos , Blefaroptose/cirurgia , Pálpebras/cirurgia , Fascia Lata/transplante , Reoperação , Transplante Autólogo
11.
Adv Exp Med Biol ; 762: 201-38, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22975877

RESUMO

Dendritic cells and their subsets are diverse populations of immune cells in the skin and mucous membranes that possess the ability to sense the presence of microbes and orchestrate an efficient and adapted immune response. Dendritic cells (DC) have the unique ability to act as a bridge between the innate and adaptive immune responses. These cells are composed of a number of subsets behaving with preferential and specific features depending on their location and surrounding environment. Langerhans cells (LC) or dermal DC (dDC) are readily present in mucosal areas. Other DC subsets such as plasmacytoid DC (pDC), myeloid DC (myDC), or monocyte-derived DC (MDDC) are thought to be recruited or differentiated in sites of pathogenic challenge. Upon HIV infection, DC and their subsets are likely among the very first immune cells to encounter incoming pathogens and initiate innate and adaptive immune responses. However, as evidenced during HIV infection, some pathogens have evolved subtle strategies to hijack key cellular machineries essential to generate efficient antiviral responses and subvert immune responses for spread and survival.In this chapter, we review recent research aimed at investigating the involvement of DC subtypes in HIV transmission at mucosal sites, concentrating on HIV impact on cellular signalling and trafficking pathways in DC leading to DC-mediated immune response alterations and viral immune evasion. We also address some aspects of DC functions during the chronic immune pathogenesis and conclude with an overview of the current and novel therapeutic and prophylactic strategies aimed at improving DC-mediated immune responses, thus to potentially tackle the early events of mucosal HIV infection and spread.


Assuntos
Células Dendríticas/imunologia , HIV/fisiologia , HIV/imunologia , Infecções por HIV/imunologia , Humanos , Sinapses Imunológicas
12.
ACS Appl Mater Interfaces ; 15(39): 45626-45639, 2023 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-37729014

RESUMO

Modulation of pH is crucial to maintaining the chemical homeostasis of biological environments. The irregular metabolic pathways exhibited by cancer cells result in the production of acidic byproducts that are excreted and accumulate in the extracellular tumor microenvironment, reducing the pH. As a consequence of the lower pH in tumors, cancer cells increase the expression of metastatic phenotypes and chemotherapeutic resistance. A significant limitation in current cancer therapies is the inability to locally deliver chemotherapeutics, leading to significant damage to healthy cells in systemic administration. To overcome these challenges, we present an injectable chitosan-poly(ethylene glycol) hydrogel that is dual-loaded with doxorubicin and sodium bicarbonate providing alkaline buffering of extracellular acidity and simultaneous chemotherapeutic delivery to increase chemotherapeutic efficacy. We conducted in vitro studies of weak base chemotherapeutic and alkaline buffer release from the hydrogel. The release of doxorubicin from hydrogels increased in a low-pH environment and was dependent on the encapsulated sodium bicarbonate concentration. We investigated the influence of pH on the doxorubicin efficacy and viability of MCF-7 and MDA-MB-231 breast cancer cell lines. The results show a 2- to 3-fold increase in IC50 values from neutral pH to low pH, showing decreased cancer cell viability at neutral pH as compared to acidic pH. The IC50 results were shown to correlate with a decrease in intracellular uptake of doxorubicin at low pH. The proposed hydrogels were confirmed to be nontoxic to healthy MCF-10A mammary epithelial cells. Rheological studies were performed to verify that the dual-loaded hydrogels were injectable. The mechanical and release properties of the hydrogels were maintained after extended storage. The chemotherapeutic activity of doxorubicin was evaluated in the presence of the proposed pH-regulating hydrogels. The findings suggest a promising nontoxic, biodegradable hydrogel buffer delivery system that can achieve two simultaneous important goals of local acidosis neutralization and chemotherapeutic release.

13.
J Plast Reconstr Aesthet Surg ; 87: 180-186, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37879142

RESUMO

BACKGROUND: Currently, one published study documented operative time (OT) as a predictor for postoperative outcomes in bilateral deep inferior epigastric perforator (DIEP) flap breast reconstructions. No literature has investigated this in unilateral DIEP flaps. We aimed to determine the relationship between unilateral OT, postoperative complications, unplanned reoperations (UR), and extended length-of-stay (eLOS). METHODS: Patients who underwent elective unilateral DIEP reconstruction from 2018 to 2023 at a tertiary centre in London, United Kingdom, were retrospectively analysed. Patients were divided into four groups depending on OT quartiles to define a critical cut-off period. Data on extensive covariates, including procedural complexity, was recorded and used in univariable and multivariable regression models. RESULTS: The final cohort contained 173 patients. After risk-adjustment, ≥421-minute operations led to a significantly higher overall complication rate (HR: 2.14, 95% CI: 1.26, 3.64, p = 0.005) relative to <421 min. Significantly higher odds of eLOS were observed in the ≥460-minute group (OR: 2.07, 95% CI: 1.07, 3.99, p = 0.03) compared to <460 min. There was no significant effect on the rate of postoperative UR across any OT group. CONCLUSIONS: We confirmed OT was an independent predictor for postoperative outcomes in the DIEP flap, and demonstrated this in unilateral reconstructions. A clinical maximum threshold of 7 h was derived based on this cohort to help guide future surgical practice. Efficiency can be achieved by meticulous preoperative planning and process standardisation, multiple senior surgeons working per flap, and smooth teamwork between specialities and intraoperative staff.


Assuntos
Mamoplastia , Retalho Perfurante , Humanos , Estudos Retrospectivos , Retalho Perfurante/cirurgia , Duração da Cirurgia , Mamoplastia/efeitos adversos , Fatores de Risco , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Artérias Epigástricas/cirurgia
14.
Plast Reconstr Surg Glob Open ; 11(6): e5089, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37361509

RESUMO

The deep inferior epigastric perforator (DIEP) flap is the gold standard for autologous breast reconstruction. One or two pedicles may be used. Our study is the first to compare unipedicled and bipedicled DIEP flaps on donor and recipient site outcomes in the same patient cohort. Methods: This is a retrospective cohort study comparing DIEP flap outcomes between 2019 and 2022. Results: There were 98 patients, categorized differently for recipient or donor site. The recipient groups were unilateral unipedicled (N = 52), bilateral unipedicled (N = 15), and unilateral bipedicled (N = 31), and donor site groups were unipedicled (N = 52) and bipedicled (N = 46, including bilateral unipedicled and unilateral bipedicled). Bipedicled DIEP flaps had 1.15 times greater odds of donor site complication (95% CI, 0.52-2.55). Adjusting for operative time that was longer in bipedicled DIEP flaps (P < 0.001), odds ratio decreased, and there was a lower probability of donor site complication for bipedicled flaps (OR, 0.84; 95% CI, 0.31-2.29). Odds of recipient area complication was not significantly different between groups. Unilateral unipedicled DIEP flaps had significantly higher rates of revisional elective surgery than unilateral bipedicled DIEP flaps (40.4% versus 12.9%; P = 0.029). Conclusions: We demonstrate no significant difference in donor site morbidity between unipedicled and bipedicled DIEP flaps. Bipedicled DIEP flaps do have slightly higher rates of donor site morbidity, which can be partly explained by longer operative times. There is no significant difference in recipient site complications, and bipedicled DIEP flaps can reduce rates of further elective surgery.

15.
Cureus ; 15(7): e41658, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37565116

RESUMO

Background Health coaching is an increasingly used strategy to help in adopting lifestyle changes for weight loss. While Saudi Arabia has one of the highest obesity prevalences worldwide, research on lifestyle interventions for weight loss is limited. Aim We aimed to investigate the effectiveness of health coaching for weight loss among the Saudi population in real-world primary healthcare settings. Methods This is a retrospective observational study. Secondary data from the health coach national program in the Eastern Health Cluster were retrieved. Obese and overweight individuals aged 15 years or older with weight-related goals who completed at least 12 weeks of coaching were included in the analysis. The primary outcomes are weight change (kg) and weight change percent (%) of the initial weight. We further compared the weight change% between different follow-up methods (i.e., physical, virtual, and hybrid) and studied the factors associated with -5% weight loss. Results In total, 465 participants were included in the analysis, with a female predominance (66.2%) and a median initial weight of 90 kg (interquartile range (IQR): 77, 101). The median follow-up duration was 127 days (IQR: 101, 157), and the median total number of coaching sessions was three (IQR: 2, 5). The mean weight change was -2.68 kg (95% confidence interval (CI): -3.12, -2.24), p<0.001. Comparing each follow-up group, no statistically significant difference was found when controlling for number of visits (p=0.059). The adjusted means for weight change% were -3.77%, -2.59%, and -2.54% for hybrid, physical, and virtual visits, respectively. Factors that were associated with achieving at least -5% weight loss were male sex (adjusted odds ratio (aOR)=1.87, 95% CI: 1.16, 3.02), five or more total coaching visits (aOR=5.23, 95% CI: 2.88, 9.50), longer follow-up duration (aOR=1.09, 95% CI: 1.03, 1.15), and having a weight management goal (aOR=4.5, 95% CI: 1.63, 12.45) as the reason for initial coaching visit. Conclusion We found statistically significant weight change among clients who completed 12 weeks of coaching in primary care settings. The findings in this paper contribute to the importance of lifestyle interventions for weight loss among the Saudi population. However, stronger controlled studies are needed to confirm this finding.

16.
Nanoscale Adv ; 5(22): 6078-6092, 2023 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-37941955

RESUMO

Nanocomposite aerogels exhibit high porosity and large interfacial surface areas, enabling enhanced chemical transport and reactivity. Such mesoporous architectures can be prepared by freeze-casting naturally-derived biopolymers such as silk fibroin, but often form mechanically weak structures that degrade in water, which limits their performance under ambient conditions. Adding 2D material fillers such as graphene oxide (GO) or transition metal carbides (e.g. MXene) could potentially reinforce these aerogels via stronger intermolecular interactions with the polymeric binder. Here, we show that freeze-casting of GO nanosheets with silk fibroin results in a highly water-stable, mechanically robust aerogel, with considerably enhanced properties relative to silk-only or silk-MXene aerogels. These silk-GO aerogels exhibit high contact angles with water and are highly water stable. Moreover, aerogels can adsorb up 25-35 times their mass in oil, and can be used robustly for selective oil separation from water. This increased stability may occur due to strengthened intermolecular interactions such as hydrogen bonding, despite the random coil and α-helix conformation of silk fibroin, which is typically more soluble in water. Finally, we show these aerogels can be prepared at scale by freeze-casting on a copper mesh. Ultimately, we envision that these multicomponent aerogels could be widely utilized for molecular separations and environmental sensing, as well as for thermal insulation and electrical conductivity.

17.
J Glob Infect Dis ; 15(4): 172-174, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38292692

RESUMO

Varicella-zoster virus (VZV) can cause variable disease states in individuals with intact and compromised immune systems. Both meningoencephalitis and thrombotic thrombocytopenic purpura (TTP) are uncommon, life-threatening entities associated with VZV. There are few reported cases of TTP due to VZV and this may be the first case of TTP due to VZV meningoencephalitis confirmed through lumbar puncture. The literature tends to emphasize that this pathology mostly occurs in immunocompromised hosts. Here, we present a unique case of TTP due to VZV meningoencephalitis in a patient that was immunocompetent.

18.
J Infect ; 87(4): 328-335, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37543310

RESUMO

The importance of salivary SARS-CoV-2 antibodies, following infection and vaccination, has not been fully established. 875 healthcare workers were sampled during the first wave in 2020 and 66 longitudinally in response to Pfizer BioNTech 162b2 vaccination. We measured SARS-CoV-2 total IgGAM and individual IgG, IgA and IgM antibodies. IgGAM seroprevalence was 39.9%; however, only 34.1% of seropositive individuals also had salivary antibodies. Infection generated serum IgG antibodies in 51.4% and IgA antibodies in 34.1% of individuals. In contrast, the salivary antibody responses were dominated by IgA (30.9% and 12% generating IgA and IgG antibodies, respectively). Post 2nd vaccination dose, in serum, 100% of infection naïve individuals had IgG and 82.8% had IgA responses; in saliva, 65.5% exhibited IgG and 55.2% IgA antibodies. Prior infection enhanced the vaccine antibody response in serum but no such difference was observed in saliva. Strong neutralisation responses were seen for serum 6 months post 2nd-vaccination dose (median 87.1%) compared to low neutralisation responses in saliva (median 1%). Intramuscular vaccination induces significant serum antibodies and to a lesser extent, salivary antibodies; however, salivary antibodies are typically non-neutralising. This study provides further evidence for the need of mucosal vaccines to elicit nasopharyngeal/oral protection. Although saliva is an attractive non-invasive sero-surveillance tool, due to distinct differences between systemic and oral antibody responses, it cannot be used as a proxy for serum antibody measurement.


Assuntos
COVID-19 , Saliva , Humanos , COVID-19/prevenção & controle , Estudos Soroepidemiológicos , SARS-CoV-2 , Vacinação , Imunoglobulina A , Anticorpos Antivirais , Imunoglobulina G
19.
Nat Med ; 29(7): 1814-1820, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37460754

RESUMO

Predictive artificial intelligence (AI) systems based on deep learning have been shown to achieve expert-level identification of diseases in multiple medical imaging settings, but can make errors in cases accurately diagnosed by clinicians and vice versa. We developed Complementarity-Driven Deferral to Clinical Workflow (CoDoC), a system that can learn to decide between the opinion of a predictive AI model and a clinical workflow. CoDoC enhances accuracy relative to clinician-only or AI-only baselines in clinical workflows that screen for breast cancer or tuberculosis (TB). For breast cancer screening, compared to double reading with arbitration in a screening program in the UK, CoDoC reduced false positives by 25% at the same false-negative rate, while achieving a 66% reduction in clinician workload. For TB triaging, compared to standalone AI and clinical workflows, CoDoC achieved a 5-15% reduction in false positives at the same false-negative rate for three of five commercially available predictive AI systems. To facilitate the deployment of CoDoC in novel futuristic clinical settings, we present results showing that CoDoC's performance gains are sustained across several axes of variation (imaging modality, clinical setting and predictive AI system) and discuss the limitations of our evaluation and where further validation would be needed. We provide an open-source implementation to encourage further research and application.


Assuntos
Inteligência Artificial , Triagem , Reprodutibilidade dos Testes , Fluxo de Trabalho , Humanos
20.
East Mediterr Health J ; 28(3): 173-174, 2022 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-35394047

RESUMO

The World Health Organization has noted the important synergies between health and peace since its very inception, both in its foundational document and in its work globally. The WHO Constitution remarks that the "health of all peoples is fundamental to the attainment of peace and security and is dependent on the fullest co-operation of individuals and States". In addition, peace is noted as being one of the fundamental conditions to promote health in the Ottawa Charter for Health Promotion in 1986. The Eastern Mediterranean Region (EMR) has been contending with the challenges borne of conflict and insecurity for decades. Currently, nine out of the 22 countries and territories in the Eastern Mediterranean Region are represented in the World Bank's List of Fragile and Conflict Affected States ranging from acute conflict to high institutional fragility.


Assuntos
Promoção da Saúde , Humanos , Região do Mediterrâneo , Organização Mundial da Saúde
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