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1.
Women Birth ; 37(4): 101631, 2024 Jun 10.
Article En | MEDLINE | ID: mdl-38861852

BACKGROUND: Obstetric violence, including unconsented interventions, coercion and disrespect, violates human rights; impacting the physical and psychosocial health of women. The perspective and experience of midwives related to obstetric violence have been explored in low and middle-income countries, with limited research into the experience of midwives in high income nations. AIM: To explore Australian midwives' perspectives of obstetric violence. METHODS: Thematic analysis of qualitative in-depth interviews with 15 midwives experienced in supporting women during birth. Critical feminist theory underpinned each stage of the research. FINDINGS: Interviews with 15 Australian midwives from diverse care settings were analysed thematically. Four key themes were developed from the data: 'the operationalisation of obstetric violence', 'the impact of obstetric violence' 'the historical and situational context' and 'hope for the future'. Midwives considered entrenched patriarchal structures and gender inequity as fundamental to the occurrence of obstetric violence. This societal scaffold is intensified within health care systems where power imbalances facilitate maternal mistreatment through coercion and grooming women for compliance in the antenatal period. Fragmented care models expose women to mistreatment with continuity models being protective only to a point. Midwives experience their own trauma, as a result of what they have witnessed, and due to the lack of support they receive when advocating for women. CONCLUSIONS: Obstetric violence occurs in Australian maternity systems with unconsented interventions, overmedicalisation, coercion, and disrespect observed by midwives. Care-related trauma impacts on the mental health of midwives, raising workforce concerns for policy makers, consumer advocates and professional bodies.

2.
Sci Rep ; 14(1): 13447, 2024 06 11.
Article En | MEDLINE | ID: mdl-38862628

Aedes aegypti is vector of many arboviruses including Zika, dengue, yellow fever, West Nile, and Chikungunya. Its control efforts are hampered by widespread insecticide resistance reported in the Americas and Asia, while data from Africa is more limited. Here we use publicly available 729 Ae. aegypti whole-genome sequencing samples from 15 countries, including nine in Africa, to investigate the genetic diversity in four insecticide resistance linked genes: ace-1, GSTe2, rdl and vgsc. Apart from vgsc, the other genes have been less investigated in Ae. aegypti, and almost no genetic diversity information is available. Among the four genes, we identified 1,829 genetic variants including 474 non-synonymous substitutions, some of which have been previously documented, as well as putative copy number variations in GSTe2 and vgsc. Global insecticide resistance phenotypic data demonstrated variable resistance in geographic areas with resistant genotypes. Overall, our work provides the first global catalogue and geographic distribution of known and new amino-acid mutations and duplications that can be used to guide the identification of resistance drivers in Ae. aegypti and thereby support monitoring efforts and strategies for vector control.


Aedes , Genetic Variation , Insecticide Resistance , Insecticide Resistance/genetics , Animals , Aedes/genetics , Aedes/drug effects , Genomics/methods , Mosquito Vectors/genetics , Mosquito Vectors/drug effects , Insecticides/pharmacology , Insect Proteins/genetics , Whole Genome Sequencing/methods , DNA Copy Number Variations
3.
Midwifery ; 134: 104016, 2024 Jul.
Article En | MEDLINE | ID: mdl-38703427

BACKGROUND: The COVID-19 pandemic resulted in rapid changes aimed at reducing disease transmission in maternity services in Australia. An increase in personal protective equipment (PPE) in the clinical and community setting was a key strategy. There was variation in the type of PPE and when it was to be worn in clincial practice. AIM: This paper reports on Australian midwives' experiences of PPE during the pandemic. METHODS: This sequential mixed methods study was part of the Birth in the Time of COVID-19 (BITTOC 2020) study. Data were obtained from in-depth semi-structured interviews with midwives in 2020 followed by a national survey undertaken at two time points (2020 and 2021). Qualitative open-text survey responses and interview data were analysed using content analysis. FINDINGS: 16 midwives were interviewed and 687 midwives provided survey responses (2020 n = 477, 2021 n = 210). Whilst midwives largley understood the need for increased PPE, and were mainly happy with this, as it was protective, they reported a number of concerns. These included: inconsistency with PPE type, use, availability, quality, fit and policy; the impact of PPE on the physical and psychological comfort of midwives; and the barriers PPE use placed on communication and woman centred care. This at times resulted in midwives working outside of policy. CONCLUSION: These findings highlight the need for future comprehensive pandemic preparedness that ensures policy and procedure recommendations are consistent and PPE is available, of approriate quality, and individually fitted in order to ensure that Australian maternity services are well placed to manage future pandemics.


COVID-19 , Nurse Midwives , Personal Protective Equipment , Humans , COVID-19/prevention & control , COVID-19/epidemiology , Australia/epidemiology , Female , Adult , Pregnancy , Nurse Midwives/psychology , SARS-CoV-2 , Pandemics/prevention & control , Surveys and Questionnaires , Midwifery , Qualitative Research , Middle Aged , Attitude of Health Personnel
5.
Circulation ; 149(23): 1802-1811, 2024 Jun 04.
Article En | MEDLINE | ID: mdl-38583146

BACKGROUND: Several SGLT2i (sodium-glucose transport protein 2 inhibitors) and GLP1-RA (glucagon-like peptide-1 receptor agonists) reduce cardiovascular events and improve kidney outcomes in patients with type 2 diabetes; however, utilization remains low despite guideline recommendations. METHODS: A randomized, remote implementation trial in the Mass General Brigham network enrolled patients with type 2 diabetes with increased cardiovascular or kidney risk. Patients eligible for, but not prescribed, SGLT2i or GLP1-RA were randomly assigned to simultaneous virtual patient education with concurrent prescription of SGLT2i or GLP1-RA (ie, Simultaneous) or 2 months of virtual education followed by medication prescription (ie, Education-First) delivered by a multidisciplinary team driven by nonlicensed navigators and clinical pharmacists who prescribed SGLT2i or GLP1-RA using a standardized treatment algorithm. The primary outcome was the proportion of patients with prescriptions for either SGLT2i or GLP1-RA by 6 months. RESULTS: Between March 2021 and December 2022, 200 patients were randomized. The mean age was 66.5 years; 36.5% were female, and 22.0% were non-White. Overall, 30.0% had cardiovascular disease, 5.0% had cerebrovascular disease, and 1.5% had both. Mean estimated glomerular filtration rate was 77.9 mL/(min‧1.73 m2), and mean urine/albumin creatinine ratio was 88.6 mg/g. After 2 months, 69 of 200 (34.5%) patients received a new prescription for either SGLT2i or GLP1-RA: 53.4% of patients in the Simultaneous arm and 8.3% of patients in the Education-First arm (P<0.001). After 6 months, 128 of 200 (64.0%) received a new prescription: 69.8% of patients in the Simultaneous arm and 56.0% of patients in Education-First (P<0.001). Patient self-report of taking SGLT2i or GLP1-RA within 6 months of trial entry was similarly greater in the Simultaneous versus Education-First arm (69 of 116 [59.5%] versus 37 of 84 [44.0%]; P<0.001) Median time to first prescription was 24 (interquartile range [IQR], 13-50) versus 85 days (IQR, 65-106), respectively (P<0.001). CONCLUSIONS: In this randomized trial, a remote, team-based program identifies patients with type 2 diabetes and high cardiovascular or kidney risk, provides virtual education, prescribes SGLT2i or GLP1-RA, and improves guideline-directed medical therapy. These findings support greater utilization of virtual team-based approaches to optimize chronic disease management. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT06046560.


Diabetes Mellitus, Type 2 , Sodium-Glucose Transporter 2 Inhibitors , Humans , Female , Male , Aged , Diabetes Mellitus, Type 2/drug therapy , Sodium-Glucose Transporter 2 Inhibitors/therapeutic use , Middle Aged , Patient Education as Topic , Glucagon-Like Peptide-1 Receptor/agonists , Hypoglycemic Agents/therapeutic use , Practice Guidelines as Topic , Cardiovascular Diseases , Telemedicine , Guideline Adherence , Treatment Outcome
6.
Biochem J ; 481(5): 363-385, 2024 Mar 06.
Article En | MEDLINE | ID: mdl-38421035

The plant macronutrient phosphorus is a scarce resource and plant-available phosphate is limiting in most soil types. Generally, a gene regulatory module called the phosphate starvation response (PSR) enables efficient phosphate acquisition by roots and translocation to other organs. Plants growing on moderate to nutrient-rich soils need to co-ordinate availability of different nutrients and repress the highly efficient PSR to adjust phosphate acquisition to the availability of other macro- and micronutrients, and in particular nitrogen. PSR repression is mediated by a small family of single SYG1/Pho81/XPR1 (SPX) domain proteins. The SPX domain binds higher order inositol pyrophosphates that signal cellular phosphorus status and modulate SPX protein interaction with PHOSPHATE STARVATION RESPONSE1 (PHR1), the central transcriptional regulator of PSR. Sequestration by SPX repressors restricts PHR1 access to PSR gene promoters. Here we focus on SPX4 that primarily acts in shoots and sequesters many transcription factors other than PHR1 in the cytosol to control processes beyond the classical PSR, such as nitrate, auxin, and jasmonic acid signalling. Unlike SPX1 and SPX2, SPX4 is subject to proteasomal degradation not only by singular E3 ligases, but also by SCF-CRL complexes. Emerging models for these different layers of control and their consequences for plant acclimation to the environment will be discussed.


Phosphates , Phosphorus , Phosphates/metabolism , Phosphorus/metabolism , Transcription Factors/metabolism , Plants/genetics , Plants/metabolism , Ubiquitination , Gene Expression Regulation, Plant
7.
Women Birth ; 37(2): 419-427, 2024 Mar.
Article En | MEDLINE | ID: mdl-38218652

BACKGROUND: To reduce transmission risk during the COVID-19 pandemic, 'telehealth' (health care delivered via telephone/video-conferencing) was implemented into Australian maternity services. Whilst some reports on telehealth implementation ensued, there was scant evidence on women and midwives' perspectives regarding telehealth use. METHODS: A qualitative study was conducted in Australia during 2020-2021 using two data sources from the Birth in the Time of COVID-19 (BITTOC) study: i) interviews and ii) surveys (open-text responses). Content analysis was utilised to analyse the data and explore telehealth from the perspective of midwives and women accessing maternity care services. In-depth interviews were conducted with 20 women and 16 midwives. Survey responses were provided from 687 midwives and 2525 women who were pregnant or gave birth in 2021, generating 212 and 812 comments respectively. FINDINGS: Telehealth delivery was variable nationally and undertaken primarily by telephone/videoconferencing. Perceived benefits included: reduced COVID-19 transmission risk, increased flexibility, convenience and cost efficiency. However, women described inadequate assessment, and negative impacts on communication and rapport development. Midwives had similar concerns and also reported technological challenges. CONCLUSION: During the COVID-19 pandemic, telehealth offered flexibility, convenience and cost efficiency whilst reducing COVID-19 transmission, yet benefits came at a cost. Telehealth may particularly suit women in rural and remote areas, however, it also has the potential to further reduce equitable, and appropriate care delivery for those at greatest risk of poor outcomes. Telehealth may play an adjunct role in post-pandemic maternity services, but is not a suitable replacement to traditional face-to-face maternity care.


COVID-19 , Maternal Health Services , Telemedicine , Female , Pregnancy , Humans , Pandemics/prevention & control , Australia/epidemiology , COVID-19/epidemiology , COVID-19/prevention & control
8.
Parasit Vectors ; 17(1): 10, 2024 Jan 04.
Article En | MEDLINE | ID: mdl-38178249

BACKGROUND: Insecticide resistance is reducing the efficacy of vector control interventions, consequently threatening efforts to control vector-borne diseases, including malaria. Investigating the prevalence of molecular markers of resistance is a useful tool for monitoring the spread of insecticide resistance in disease vectors. The Bijagós Archipelago (Bijagós) in Guinea-Bissau is a region of stable malaria transmission where insecticide-treated nets are the mainstay for malaria control. However, the prevalence of molecular markers of insecticide resistance in malaria vectors is not well understood. METHODS: A total of 214 Anopheles mosquitoes were analysed from 13 islands across the Bijagós. These mosquitoes were collected using CDC light traps in November 2019, during the peak malaria transmission season. High-throughput multiplex amplicon sequencing was used to investigate the prevalence of 17 different molecular markers associated with insecticide resistance in four genes: vgsc, rdl, ace1 and gste2. RESULTS: Of the 17 screened mutations, four were identified in mosquitoes from the Bijagós: vgsc L995F (12.2%), N1570Y (6.2%) and A1746S (0.7%) and rdl A269G (1.1%). This study is the first to report the L995F knock-down resistance (kdr)-west allele in Anopheles melas on the Archipelago. An additional eight non-synonymous single-nucleotide polymorphisms were identified across the four genes which have not been described previously. The prevalences of the vgsc L995F and N1570Y mutations were higher on Bubaque Island than on the other islands in this study; Bubaque is the most populous island in the archipelago, with the greatest population mobility and connection to continental Guinea-Bissau. CONCLUSIONS: This study provides the first surveillance data for genetic markers present in malaria vectors from islands across the Bijagós Archipelago. Overall prevalence of insecticide resistance mutations was found to be low. However, the identification of the vgsc L995F and N1570Y mutations associated with pyrethroid resistance warrants further monitoring. This is particularly important as the mainstay of malaria control on the islands is the use of pyrethroid insecticide-treated nets.


Anopheles , Insecticides , Malaria , Pyrethrins , Animals , Anopheles/genetics , Insecticide Resistance/genetics , Insecticides/pharmacology , Mosquito Vectors/genetics , Pyrethrins/pharmacology , Genomics , Mutation
9.
Sci Rep ; 13(1): 5612, 2023 04 05.
Article En | MEDLINE | ID: mdl-37019918

Since its first detection in 2012 in Djibouti, Anopheles stephensi has invaded and established in the Horn of Africa, and more recently Nigeria. The expansion of this vector poses a significant threat to malaria control and elimination efforts. Integrated vector management is the primary strategy used to interrupt disease transmission; however, growing insecticide resistance is threatening to reverse gains in global malaria control. We present a next-generation amplicon-sequencing approach, for high-throughput monitoring of insecticide resistance genes (ace1, GSTe2, vgsc and rdl), species identification and characterization of genetic diversity (its2 and cox1) in An. stephensi. Ninety-five An. stephensi mosquitoes, collected in Ethiopia, were screened, identifying 104 SNPs, including the knock-down mutation L958F (L1014F in Musca domestica), and for the first time in this vector species, the A296S substitution (A301S in Drosophila melanogaster) in the rdl locus. Two other amino acid substitutions (ace1-N177D, GSTe2-V189L) were also identified but have not been previously implicated in insecticide resistance. Genetic diversity in the mitochondrial cox1 gene revealed shared haplotypes between Ethiopian An. stephensi with samples from Pakistan, Sudan, and Djibouti. Overall, we present a reliable, cost-effective strategy using amplicon-sequencing to monitor known insecticide resistance mutations, with the potential to identify new genetic variants, to assist in the high-throughput surveillance of insecticide resistance in An. stephensi populations.


Anopheles , Insecticides , Malaria , Animals , Insecticide Resistance/genetics , Anopheles/genetics , Drosophila melanogaster , Mosquito Vectors/genetics , Insecticides/pharmacology , Ethiopia
10.
Sci Rep ; 13(1): 2729, 2023 02 15.
Article En | MEDLINE | ID: mdl-36792622

The invasion and establishment of An. stephensi mosquitoes in the Horn of Africa represents a significant regional threat, which may jeopardise malaria control, particularly in urban areas which were formally free from disease transmission. Novel vector surveillance methods are urgently needed, both agnostic to mosquito larval morphology, and simple to implement at the sampling stage. Using new multiplex TaqMan assays, specifically targeting An. stephensi and Ae. aegypti, we validated the use of environmental DNA (eDNA) for simultaneous vector detection in shared artificial breeding sites. Study findings demonstrated that An. stephensi and Ae. aegypti eDNA deposited by as few as one second instar larva in 1L of water was detectable. Characterization of molecular insecticide resistance mechanisms, using novel amplicon-sequencing panels for both vector species, was possible from eDNA shed by as few as 16-32 s instar larvae in 50 ml of water. An. stephensi eDNA, derived from emergent pupae for 24 h, was remarkably stable, and still detectable ~ 2 weeks later. eDNA surveillance has the potential to be implemented in local endemic communities and at points of country entry, to monitor the spread of invasive vector species. Further studies are required to validate the feasibility of this technique under field conditions.


Aedes , Anopheles , Insecticides , Animals , Anopheles/genetics , Aedes/genetics , Larva/genetics , Mosquito Vectors/genetics , Plant Breeding
11.
Adv Med Educ Pract ; 14: 71-86, 2023.
Article En | MEDLINE | ID: mdl-36761370

Background: Medical student and health-care staff bullying remain international concerns. Our understanding about what might solve such problems is still developing. A common approach suggested for bystanders to bullying is that they challenge or "stand up" to the bully. At the same time, the considerable risks should they act (eg, verbal rebuke) are rarely acknowledged, and neither is the potential for considerable cognitive dissonance should they choose not to. Methods: Drawing on a substantial literature review, we developed an interventional program, initially with medical student bullying in mind, that generally employed a discourse for values cultivation. We implemented and evaluated this program through 6 cycles of action research methodology in 6 different departments of one tertiary teaching hospital. Data include individual interviews, discussions with key participants plus freehand comments from wider staff's workshop evaluations. Results: Alongside others, an early serendipitous finding was the "IMO" [Indirect, focus on Me, focus on Outcome] framework, intended for bystanders to student bullying. From using this framework, participants reported developing confidence in tackling negative behaviours, that interactions had better outcomes and that the workplace atmosphere felt more relaxed. It's use also significantly reduced cognitive dissonance. Encouragingly, participants went on to use IMO for staff-staff bullying incidents, and other common negative behaviours. We attribute IMO's utility to its memorability, simplicity and for catering to the many possible causes of bullying, including values issues, without perpetuating or creating conflict. Conclusion: The IMO framework is offered as a widely usable framework for all staff in a clinical environment - a useful addition to popular frameworks used in the clinical workplace, ideas from which might also help these be further refined. Further evaluation would establish whether IMO invites long-term change and its utility in other contexts.

12.
Violence Against Women ; 29(9): 1832-1852, 2023 07.
Article En | MEDLINE | ID: mdl-36366732

This study explores a social marketing campaign aimed to promote compassionate responses to disclosures of sexual violence from peers and raise awareness of university-based formal support services. Findings from a survey (n = 189) and follow-up focus groups (n = 11) conducted with university students in Australia indicated that exposure to the campaign may support students' self-perceived confidence in responding compassionately to disclosures of sexual violence and raise awareness of university-based formal support services. These findings suggest social marketing may be a useful tool to form part of universities' sexual violence response and prevention strategies. These findings may help inform future university campaigns.


Sex Offenses , Social Marketing , Humans , Universities , Disclosure , Sex Offenses/prevention & control , Focus Groups
13.
PLoS Negl Trop Dis ; 16(12): e0010935, 2022 12.
Article En | MEDLINE | ID: mdl-36512510

Aedes mosquito vectors transmit many viruses of global health concern, including dengue, chikungunya and Zika. These vector-borne viral diseases have a limited number of treatment options, and vaccines vary in their effectiveness. Consequently, integrated vector management is a primary strategy for disease control. However, the increasing emergence and spread of insecticide resistance is threatening the efficacy of vector control methods. Identifying mutations associated with resistance in vector populations is important to monitor the occurrence and evolution of insecticide resistance and inform control strategies. Rapid and cost-effective genome sequencing approaches are urgently needed. Here we present an adaptable targeted amplicon approach for cost-effective implementation within next generation sequencing platforms. This approach can identify single nucleotide polymorphisms (SNPs) and small insertions and deletions (indels) in genes involved in insecticide resistance in Aedes aegypti mosquitoes. We designed and tested eleven amplicons, which included segments of the ace-1 (carbamate target), the Voltage-Gated Sodium Channel (vgsc; pyrethroids, DDT and organochlorines), and rdl (dieldrin) genes; thereby covering established knockdown resistance (kdr) mutations (e.g., S989P, I1011M/V, V1016G/I and F1534C), with the potential to identify novel ones. The amplicon assays were designed with internal barcodes, to facilitate multiplexing of large numbers of mosquitoes at low cost, and were sequenced using an Illumina platform. Our approach was evaluated on 152 Ae. aegypti mosquitoes collected in Cabo Verde, an archipelago with a history of arbovirus outbreaks. The amplicon sequence data revealed 146 SNPs, including four non-synonymous polymorphisms in the vgsc gene, one in ace-1 and the 296S rdl mutation previously associated with resistance to organochlorines. The 296S rdl mutation was identified in 98% of mosquitoes screened, consistent with the past use of an organochlorine compound (e.g., DDT). Overall, our work shows that targeted amplicon sequencing is a rapid, robust, and cost-effective tool that can be used to perform high throughput monitoring of insecticide resistance.


Aedes , Insecticides , Pyrethrins , Voltage-Gated Sodium Channels , Zika Virus Infection , Zika Virus , Animals , Insecticide Resistance/genetics , Aedes/genetics , DDT , Cabo Verde , Insecticides/pharmacology , Pyrethrins/pharmacology , Mosquito Vectors/genetics , Voltage-Gated Sodium Channels/genetics , Mutation
14.
Sci Rep ; 12(1): 13893, 2022 08 16.
Article En | MEDLINE | ID: mdl-35974073

Surveillance of malaria vector species and the monitoring of insecticide resistance are essential to inform malaria control strategies and support the reduction of infections and disease. Genetic barcoding of mosquitoes is a useful tool to assist the high-throughput surveillance of insecticide resistance, discriminate between sibling species and to detect the presence of Plasmodium infections. In this study, we combined multiplex PCR, custom designed dual indexing, and Illumina next generation sequencing for high throughput single nucleotide polymorphism (SNP)-profiling of four species from the Anopheles (An.) gambiae complex (An. gambiae sensu stricto, An. coluzzii, An. arabiensis and An. melas). By amplifying and sequencing only 14 genetic fragments (500 bp each), we were able to simultaneously detect Plasmodium infection; insecticide resistance-conferring SNPs in ace1, gste2, vgsc and rdl genes; the partial sequences of nuclear ribosomal internal transcribed spacers (ITS1 and ITS2) and intergenic spacers (IGS), Short INterspersed Elements (SINE), as well as mitochondrial genes (cox1 and nd4) for species identification and genetic diversity. Using this amplicon sequencing approach with the four selected An. gambiae complex species, we identified a total of 15 non-synonymous mutations in the insecticide target genes, including previously described mutations associated with resistance and two new mutations (F1525L in vgsc and D148E in gste2). Overall, we present a reliable and cost-effective high-throughput panel for surveillance of An. gambiae complex mosquitoes in malaria endemic regions.


Anopheles , Insecticides , Malaria , Animals , Anopheles/genetics , Insecticide Resistance/genetics , Insecticides/pharmacology , Mosquito Vectors/genetics
15.
Stud Health Technol Inform ; 284: 124-129, 2021 Dec 15.
Article En | MEDLINE | ID: mdl-34920488

Preparing nurses for practice and ensuring nursing informatics is included in their curricula is a challenge for many nurse educators. This study asked nurse educators from around New Zealand (n=40) what they perceived as the concerns, barriers and facilitators to implementing nursing informatics within their curricula. Among the findings a key issue is the constantly evolving nature of information and communication technology in healthcare and nursing which results in the ongoing need for professional development to keep up-to-date. Outcomes from this study are recommendations which will inform our next steps in this project to support nurse educators provide the best education possible for new nurses.


Nursing Informatics , Curriculum , Humans , New Zealand
16.
Stud Health Technol Inform ; 284: 148-152, 2021 Dec 15.
Article En | MEDLINE | ID: mdl-34920492

In 2019, two standardised holographic patients viewed through a mixed-reality (MR) HoloLens headset were used in a structured learning activity to develop clinical reasoning skills among second-year nursing students (N=99, 94%). Quantitative results indicated that all students felt that being able to closely view holographic patients enhanced their learning experience. Qualitative results showed that the best feature of the MR technology was being able to clinically assess the patient in a safe facilitated environment. Further analysis revealed that students were at the 'beginning' or 'developing' skill level of the vpLCJR. These findings confirm that using standardized holographic patients offers a dynamic and effective experience for students and helps students to develop clinical reasoning and judgement skills. The technology also allows educators to determine a student's development of clinical judgement skills and tailor learning experiences to further develop these skills.


Clinical Reasoning , Students, Nursing , Clinical Competence , Humans , Judgment , Problem Solving
17.
Br J Nurs ; 30(15): 880, 2021 Aug 12.
Article En | MEDLINE | ID: mdl-34379460
18.
Biochem Soc Trans ; 49(4): 1817-1827, 2021 08 27.
Article En | MEDLINE | ID: mdl-34374409

Hematopoiesis, the process of blood formation, is controlled by a complex developmental program that involves intrinsic and extrinsic regulators. Blood formation is critical to normal embryonic development and during embryogenesis distinct waves of hematopoiesis have been defined that represent the emergence of hematopoietic stem or progenitor cells. The Class I family of homeobox (HOX) genes are also critical for normal embryonic development, whereby mutations are associated with malformations and deformity. Recently, members of the HOXA cluster (comprising 11 genes and non-coding RNA elements) have been associated with the emergence and maintenance of long-term repopulating HSCs. Previous studies identified a gradient of HOXA expression from high in HSCs to low in circulating peripheral cells, indicating their importance in maintaining blood cell numbers and differentiation state. Indeed, dysregulation of HOXA genes either directly or by genetic lesions of upstream regulators correlates with a malignant phenotype. This review discusses the role of the HOXA cluster in both HSC emergence and blood cancer formation highlighting the need for further research to identify specific roles of these master regulators in normal and malignant hematopoiesis.


Hematologic Neoplasms/pathology , Hematopoietic Stem Cells/pathology , Homeodomain Proteins/genetics , Multigene Family , Cell Differentiation , Hematologic Neoplasms/genetics , Hematopoiesis , Homeodomain Proteins/physiology , Humans
19.
Nat Commun ; 12(1): 3589, 2021 06 11.
Article En | MEDLINE | ID: mdl-34117240

Insecticide-treated nets (ITNs) are one of the most widespread and impactful malaria interventions in Africa, yet a spatially-resolved time series of ITN coverage has never been published. Using data from multiple sources, we generate high-resolution maps of ITN access, use, and nets-per-capita annually from 2000 to 2020 across the 40 highest-burden African countries. Our findings support several existing hypotheses: that use is high among those with access, that nets are discarded more quickly than official policy presumes, and that effectively distributing nets grows more difficult as coverage increases. The primary driving factors behind these findings are most likely strong cultural and social messaging around the importance of net use, low physical net durability, and a mixture of inherent commodity distribution challenges and less-than-optimal net allocation policies, respectively. These results can inform both policy decisions and downstream malaria analyses.


Benchmarking/methods , Insecticide-Treated Bednets , Insecticides , Malaria/prevention & control , Africa , Communicable Disease Control/methods , Computational Biology , Humans , Life Style , Malaria/epidemiology , Mosquito Control/methods
20.
Future Healthc J ; 8(1): e7-e10, 2021 Mar.
Article En | MEDLINE | ID: mdl-33791466

The COVID-19 pandemic has had a significant impact on the provision of postgraduate medical education across the country. There has been a widespread need to upskill and empower the medical workforce in order to tackle the evolving clinical situation. At Lewisham and Greenwich NHS Trust, traditional face-to-face group teaching was suspended due to the need for social distancing, but the appetite for learning was high. We recognised the need for alternative teaching methods and identified two key educational areas that required attention: topics related to COVID-19 and its management, and education for doctors being redeployed to other specialties. We developed an innovative method of education delivery to regularly provide high-quality, relevant material to hundreds of healthcare professionals at both hospital sites. We believe that our methods could help other organisations to maintain teaching as the pandemic progresses.

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