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Gut microbiome profile among children and adolescents living with sickle cell disease: a protocol for systematic review and meta-analysis

Por: Salako · A. O. · Ogbeh · J. I. · Adekola · H. A. · Odubela · O. · Akinsolu · F. · Jimoh · R. · Musari-Martins · T. E. · Luka · S. · Oba · A. · Ayegbeso · D. · Odubela · O. O. · Gbaja-Biamila · T. A. · Musa · A. Z. · Salako · B. L.
Introduction

This systematic review aims to synthesise current evidence on gut microbiome profiles among children with sickle cell disease (SCD), assess the influence of analgesic and antibiotic use, and explore the contributions of environmental factors on their gut microbiota diversity. Through identification of consistent microbial patterns and gaps in the existing literature, this review will provide vital insight into potential microbiome-targeted strategies for improving health outcomes in paediatric SCD care.

Methods and analysis

Studies describing the gut microbiota among paediatric SCD human subjects (

Ethics and dissemination

Ethical approval will not be required as this is a systematic review of published data. The findings will be disseminated through publications in peer-reviewed journals and presentations at relevant scientific conferences.

PROSPERO registration number

CRD420251102736.

Preventing Child Maltreatment in Early Childhood: The Clinical Role of Public Health Nurses in Primary Care

ABSTRACT

Aim and Objective

To explore how public health nurses at child and family health clinics work to prevent maltreatment and the experiences of public health nurses in the maltreatment prevention efforts.

Background

Child maltreatment is a serious societal issue with major consequences. Preventive efforts are increasing and have broad political support. A key objective of the child and family health clinic services is to prevent, identify, and stop maltreatment, abuse, and neglect. National clinical guidelines outline, in general terms, how such work should be conducted. However, limited research exists on how public health nurses prevent maltreatment and the effectiveness of their methods.

Design and Method

A qualitative and explorative design was used, based on semi-structured interviews with 14 public health nurses conducted as part of the project ‘Public Health Nurses in Child and Family Clinics' Role in Preventing and Detecting Child Maltreatment’ at Oslo Metropolitan University. The interviews were carried out between August and November 2021. We used qualitative content analysis with an inductive approach to analyse the data.

Result

Three main categories were developed: 1. Structure and system: weaving prevention into daily practice; 2. To dare and endure: a negotiation of courage and understanding, and 3. To empower and uphold: the goal of strengthening and supporting parents. The results show the importance of early intervention, barriers to discussing maltreatment with parents, and the importance of building trust and empowering parents.

Conclusion

Preventing maltreatment is a key part of public health nurses' clinical work, focusing on early risk identification and parental guidance. While building trust with families is prioritised, structural, resource, and guideline-related challenges persist.

Implications for Practice

This study provides knowledge about Norwegian public health nurses clinical work with child maltreatment at the child and family health clinics, which can serve as a valuable foundation for further research as well as for collaborating services.

Reporting Method

EQUATOR guidelines were followed, using the COREQ checklist.

Patient or Public Contribution

No patient or public contribution.

Arp2/3 complex contributes to the actin-dependent uptake of <i>Aspergillus terreus</i> conidia by alveolar epithelial cells

by Natalia Mach, Julien Polleux, Lea Heinrich, Lukas Lechner, Iryna Levytska, Cornelia Lass-Flörl, Susanne Perkhofer

Aspergillus terreus is an opportunistic fungal pathogen associated with high mortality rates and intrinsic resistance to amphotericin B. Its ability to persist within host tissues without inducing strong immune responses was suggested to contribute to poor clinical outcomes. The cellular mechanisms underlying A. terreus interactions with host cells remain largely unexplored. In this study, we have used a micropattern-based infection model to investigate the early interactions between A. terreus conidia and alveolar epithelial cells, focusing on the role of Arp2/3-dependent actin remodeling. This system allows quantitative analysis of conidia-cell interactions under defined spatial conditions. We show that A. terreus conidia rapidly bind to micropatterned A549 cell islands, with conidial numbers increasing over time. Conidia were found in actin- and Lamp1-positive vesicles already after one hour of infection. Inhibition of the Arp2/3 complex significantly impaired conidial binding and disrupted the formation of actin-positive vesicles, confirming the essential role of Arp2/3-mediated actin remodeling in early stages of conidial uptake. A subset of conidia was localized to Lamp1-positive phagolysosomes and accumulated over time. Interestingly, we have identified a small but consistent population of Lamp1-positive vesicles decorated with actin structures, potentially resembling actin flashes. These structures were entirely abolished upon Arp2/3 inhibition, indicating active cytoskeletal remodeling at the phagolysosomal interface. Our findings provide the first mechanistic insights into A. terreus internalization by alveolar epithelial cells and establish Arp2/3-mediated actin dynamics as a key process in early host-pathogen interactions. This cellular pathway may further contribute to intracellular trafficking and help understand the delayed onset of A. terreus infections.
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