bluuebunny/crossref_metadata_2025 huggingface dataset:
Sharenting as a regulatory paradox – a comprehensive overview of the conceptualization and regulation of sharenting
Authors: Lendvai Gergely Ferenc
Published: August 2024

The present study aims to provide a comprehensive overview of the conceptualization and regulation of sharenting, a new media phenomenon strongly intertwined with the online sphere. Through a comprehensive literature review and legal analysis, the article analyses a wide array of academic sources, case studies, and sources of law to understand the polemics and implications of sharenting. The study provides a systemic overview of sharenting definitions to provide a synchronized concept. A significant portion of the research is dedicated to a comparative legal analysis of international regulations. The article examines the UN Convention on the Rights of the Child, the US Children’s Online Privacy Protection Act, and the European General Data Protection Regulation to assess their effectiveness in addressing the issues related to sharenting. Findings reveal that while these regulations provide some protection, they often fall short in fully safeguarding children’s digital identities from the risks associated with sharenting. To opt for a more activist approach, the article concludes with 17 recommendations aimed at both parents and policymakers. These recommendations include practical steps for parents to protect their children’s privacy online and suggestions for policymakers to enhance existing regulatory frameworks.
The Spectrum Between Catatonia and Functional Neurologic Disorder Superimposed on Post-Infectious Encephalitis in a Marine Recruit
Authors: Rogers Sydney , Lilley Jessica , Raynor Geoffrey , Hodges Sarah , Larson Derek
Published: August 2024

Catatonia, a neuropsychiatric condition characterized by abnormal speech, volition, and movement, is primarily thought of as a symptom of a primary psychiatric pathology, but there are a variety of non-psychiatric medical conditions that must be considered. As a result of symptomatic complexity and the wide range of differential diagnoses, catatonia-like symptoms can cloud the clinical evaluation and complicate treatment regimens. Within the realm of catatonic-like diagnoses is functional neurological disorder because of its vast range of potential presentations. Functional neurologic disorder can be diagnosed by evidence of incompatibility between neurologic symptoms and recognized neurological or medical conditions. Clinical uncertainty is further intensified in the presence of co-morbid medical etiologies because of inability to neatly delegate symptoms to a specific diagnosis. The blurred spectrum between catatonia and functional neurologic disorder is highlighted in this patient’s complex clinical presentation while being further obscured in the setting of a possible overlying encephalitis exacerbating the presentation. This case report presents a unique case of a Marine recruit whose inconsistent catatonic symptoms caused diagnostic uncertainty and were ultimately decided to have neurologic and psychiatric contributions, highlighting that diagnoses are not mutually exclusive and should be continually re-assessed as new data become available. This report also showcases the distinctiveness of U.S. Marine culture and possible physical manifestations because of imposed psychological stress.
Multiple Horizontal Mini-chromosome Transfers Drive Genome Evolution of Clonal Blast Fungus Lineages
Authors: Barragan Ana Cristina , Latorre Sergio M , Malmgren Angus , Harant Adeline , Win Joe , Sugihara Yu , Burbano Hernán A , Kamoun Sophien , Langner Thorsten
Published: August 2024

Crop disease pandemics are often driven by asexually reproducing clonal lineages of plant pathogens that reproduce asexually. How these clonal pathogens continuously adapt to their hosts despite harboring limited genetic variation, and in absence of sexual recombination remains elusive. Here, we reveal multiple instances of horizontal chromosome transfer within pandemic clonal lineages of the blast fungus Magnaporthe (Syn. Pyricularia) oryzae. We identified a horizontally transferred 1.2Mb accessory mini-chromosome which is remarkably conserved between M. oryzae isolates from both the rice blast fungus lineage and the lineage infecting Indian goosegrass (Eleusine indica), a wild grass that often grows in the proximity of cultivated cereal crops. Furthermore, we show that this mini-chromosome was horizontally acquired by clonal rice blast isolates through at least nine distinct transfer events over the past three centuries. These findings establish horizontal mini-chromosome transfer as a mechanism facilitating genetic exchange among different host-associated blast fungus lineages. We propose that blast fungus populations infecting wild grasses act as genetic reservoirs that drive genome evolution of pandemic clonal lineages that afflict cereal crops.
Phylogenetic distribution of DNA topoisomerase VI and its distinction from SPO11
Authors: Allen Adam M B , Maxwell Anthony
Published: August 2024

DNA topoisomerases (topos) are major targets for antimicrobial and chemotherapeutic drugs due to their fundamental roles in regulating DNA topology. Type II topos are essential for chromosome segregation and relaxing positive DNA supercoils, and are exemplified by topo II in eukaryotes, topo IV and DNA gyrase in bacteria, and topo VI in archaea. Topo VI occurs ubiquitously in plants and sporadically in bacteria, algae, and other protists and is highly homologous to Spo11, which initiates eukaryotic homologous recombination. This homology makes the two complexes difficult to distinguish by sequence and leads to discrepancies such as the identity of the putative topo VI in malarial Plasmodium species. A lack of understanding of the role and distribution of topo VI outside of archaea hampers its pursuit as a potential drug target, and the present study addresses this with an up-to-date and extensive phylogenetic analysis. We show that the A and B subunits of topo VI and Spo11 can be distinguished using phylogenetics and structural modelling, and that topo VI is not present in Plasmodium nor other members of the phylum Apicomplexa. These findings provide insights into the evolutionary relationships between topo VI and Spo11, and their adoption alongside other type II topos.
SIRV: spatial inference of RNA velocity at the single-cell resolution
Authors: Abdelaal Tamim , Grossouw Laurens M , Pasterkamp R Jeroen , Lelieveldt Boudewijn P F , Reinders Marcel J T , Mahfouz Ahmed
Published: August 2024

RNA Velocity allows the inference of cellular differentiation trajectories from single-cell RNA sequencing (scRNA-seq) data. It would be highly interesting to study these differentiation dynamics in the spatial context of tissues. Estimating spatial RNA velocities is, however, limited by the inability to spatially capture spliced and unspliced mRNA molecules in high-resolution spatial transcriptomics. We present SIRV, a method to spatially infer RNA velocities at the single-cell resolution by enriching spatial transcriptomics data with the expression of spliced and unspliced mRNA from reference scRNA-seq data. We used SIRV to infer spatial differentiation trajectories in the developing mouse brain, including the differentiation of midbrain-hindbrain boundary cells and marking the forebrain origin of the cortical hem and diencephalon cells. Our results show that SIRV reveals spatial differentiation patterns not identifiable with scRNA-seq data alone. Additionally, we applied SIRV to mouse organogenesis data and obtained robust spatial differentiation trajectories. Finally, we verified the spatial RNA velocities obtained by SIRV using 10x Visium data of the developing chicken heart and MERFISH data from human osteosarcoma cells. Altogether, SIRV allows the inference of spatial RNA velocities at the single-cell resolution to facilitate studying tissue development.
Targeted radionuclide therapy for gliomas: Emerging clinical trial landscape
Authors: Weller Michael , Albert Nathalie L , Galldiks Norbert , Bink Andrea , Preusser Matthias , Sulman Erik P , Treyer Valerie , Wen Patrick Y , Tonn Joerg C , Le Rhun Emilie
Published: August 2024

According to the new WHO classification of 2021, gliomas are a heterogeneous group of tumors with very different histology, molecular genetics, and prognoses. In addition to glioblastomas, the most common gliomas, there are also numerous less common gliomas, some of which have a very favorable prognosis. Targeted radionuclide therapy is a therapeutic option that can be attractive if a tumor can be targeted based on its molecular characteristics. It is particularly useful when tumors cannot be completely resected or when conventional imaging does not fully capture the extent of the tumor. Numerous approaches to radionuclide therapy for gliomas are in early development. The most advanced approaches for patients with gliomas in the clinic employ L-type amino acid transporter 1 as an uptake mechanism for radiolabeled amino acids or target somatostatin receptor 2 or gastrin-releasing peptide receptor. Here, we discuss the various target structures of radionuclide therapy in gliomas and provide an outlook for which glioma entities radionuclide therapy could most likely provide a therapeutic alternative.
Insights into interrupted rolling strategy as post-processing impact on dual phase tribological behaviour properties of Mg-8%Li doped bagasse nanoparticles composite
Authors: Aigbodion Victor Sunday
Published: August 2024

A combined effect of percentage reduction in rolling and weight percentage bagasse nanoparticles were used to improved the wear behaviour of Mg-8% Li/bagasse nanoparticle composites for the first time. The composites were produced using the double stir casting method by varying bagasse nanoparticles from 1 to 3%. The interrupted rolling process was used to reduce the samples to 50, 70, and 90%. The microstructural, hardness, and wear properties of the rolled composite were investigated. The results show that interrupted rolling lessen macrocracking and increase the rolled sample's formability. At 90% rolled reduction and 3% bagasse addition, the sample's hardness values improved to 74%. The coefficient of friction and wear resistance improved; with 90% rolled work exhibiting the highest wear resistance. Adhesion and delamination were the main wear processes in the as-cast samples; in the rolled samples, abrasion was the predominant wear mechanism. This study showed how to make Mg-8% Li-bagasse nanoparticle composites more resistant to wear by combining the effects of bagasse nanoparticles and rolling reduction.
N6-methyladenosine RNA modification regulates photoperiod sensitivity in cotton
Authors: He Ying , Si Zhanfeng , Mei Gaofu , Cheng Yu , Zhang Jun , Jiang Tao , Chen Jiani , Xiong Huifang , Zhang Tianzhen , Hu Yan
Published: August 2024

The methylation of N6-methyladenosine (m6A) involves writers, erasers, and readers, acting synergistically in posttranscriptional regulation. These processes influence various biological processes, including plant floral transition. However, the specific role of m6A modifications in photoperiod sensitivity in cotton (Gossypium hirsutum) remains obscure. To elucidate this, in this study, we conducted transcriptome-wide m6A sequencing during critical flowering transition stages in the photoperiod-sensitive wild G. hirsutum var. yucatanense (yucatanense) and the photoperiod-insensitive cultivated cotton G. hirsutum acc. TM-1 (TM-1). Our results revealed significant variations in m6A methylation of 2 cotton varieties, with yucatanense exhibiting elevated m6A modification levels compared with TM-1 under long-day conditions. Notably, distinct m6A peaks between TM-1 and yucatanense correlated significantly with photoperiod sensitivity. Moreover, our study highlighted the role of the demethylase G. hirsutum ALKB homolog 5 (GhALKBH5) in modulating m6A modification levels. Silencing GhALKBH5 led to a decreased mRNA level of key photoperiodic flowering genes (GhADO3, GhAGL24, and GhFT1), resulting in delayed bud emergence and flowering. Reverse transcription quantitative PCR analyses confirmed that silencing GhADO3 and GhAGL24 significantly downregulated the expression of the floral integrator GhFT1. Collectively, our findings unveiled a transcriptional regulatory mechanism in which GhALKBH5-mediated m6A demethylation of crucial photoperiodic flowering transcripts modulated photoperiod sensitivity in cotton.
Ocean weather, biological rates, and unexplained global ecological patterns
Authors: Li Shing Hiung Darren L C Y , Schuster Jasmin M , Duncan Murray I , Payne Nicholas L , Helmuth Brian , Chu Jackson W F , Baum Julia K , Brambilla Viviana , Bruno John , Davies Sarah W , Dornelas Maria , Gagnon Patrick , Guy-Haim Tamar , Jackson Jennifer M , Leichter James J , Madin Joshua S , Monteith Zachary L , Queirós Ana M , Schneider Eric V C , Starko Samuel , Talwar Brendan S , Wyatt Alex S J , Aichelman Hannah E , Bensoussan Nathaniel , Caruso Carlo , Castillo Karl , Choi Francis , Dong Yun-Wei , Garrabou Joaquim , Guillemain Dorian , Higgs Nicholas , Jiang Yuwu , Kersting Diego K , Kushner David J , Longo Guilherme O , Neufeld Christopher , Peirache Marion , Smyth Tim , Sprague Joshua L , Urvoy Gaëlle , Zuberer Frederic , Bates Amanda E
Published: August 2024

As on land, oceans exhibit high temporal and spatial temperature variation. This “ocean weather” contributes to the physiological and ecological processes that ultimately determine the patterns of species distribution and abundance, yet is often unrecognized, especially in tropical oceans. Here, we tested the paradigm of temperature stability in shallow waters (<12.5 m) across different zones of latitude. We collated hundreds of in situ, high temporal-frequency ocean temperature time series globally to produce an intuitive measure of temperature variability, ranging in scale from quarter-diurnal to annual time spans. To estimate organismal sensitivity of ectotherms (i.e. microbes, algae, and animals whose body temperatures depend upon ocean temperature), we computed the corresponding range of biological rates (such as metabolic rate or photosynthesis) for each time span, assuming an exponential relationship. We found that subtropical regions had the broadest temperature ranges at time spans equal to or shorter than a month, while temperate and tropical systems both exhibited narrow (i.e. stable) short-term temperature range estimates. However, temperature-dependent biological rates in tropical regions displayed greater ranges than in temperate systems. Hence, our results suggest that tropical ectotherms may be relatively more sensitive to short-term thermal variability. We also highlight previously unexplained macroecological patterns that may be underpinned by short-term temperature variability.
Development of a novel bacterial production system for recombinant bioactive proteins completely free from endotoxin contamination
Authors: Kamoshida Go , Yamaguchi Daiki , Kaya Yuki , Yamakado Toshiki , Yamashita Kenta , Aoyagi Moe , Nagai Saaya , Yamada Noriteru , Kawagishi Yu , Sugano Mizuki , Sakairi Yoshiaki , Ueno Mikako , Takemoto Norihiko , Morita Yuji , Ishizaka Yukihito , Yahiro Kinnosuke
Published: August 2024

Endotoxins, or lipopolysaccharides (LPS), are potent immunostimulatory molecules of critical concern in bacterial recombinant protein expression systems. The gram-negative bacterium Acinetobacter baumannii exhibits an interesting and unique phenotype characterized by the complete loss of LPS. In this study, we developed a novel system for producing recombinant proteins completely devoid of endotoxin contamination using LPS-deficient A. baumannii. We purified endotoxin-free functional green fluorescent protein, which reduced endotoxin contamination by approximately three orders of magnitude, and also purified the functional cytokine tumor necrosis factor (TNF)-α. Additionally, utilization of the Omp38 signal peptide of A. baumannii enabled the extracellular production of variable domain of heavy chain of heavy chain (VHH) antibodies. With these advantages, mNb6-tri-20aa, a multivalent VHH that specifically binds to the spike protein of severe acute respiratory syndrome coronavirus 2, was purified from the culture supernatant, and endotoxin contamination was reduced by a factor of approximately 2 × 105 compared with that in conventional expression systems. A virus neutralization assay demonstrated the functionality of the purified antibody in suppressing viral infections. Moreover, we applied our system to produce ozoralizumab, a multispecific VHH that binds to human TNF-α and albumin and are marketed as a rheumatoid arthritis drug. We successfully purified a functional antibody from endotoxin contamination. This system establishes a new, completely endotoxin-free platform for the expression of recombinant proteins, which distinguishes it from other bacterial expression systems, and holds promise for future applications.
A Falls Prevention Program for People After Stroke in Guyana: An International Collaboration
Authors: Pascal Maureen Romanow , Lawrence Barbara , Pires Stephanie , Newton Elton , Babulall Deoranie , Saroka Kelly , Shaver Megan , Schanzlin Mackenzie , Pearage Kristi
Published: August 2024

Objective

The objective was to describe the social, environmental, and cultural adaptations to an existing falls program and assess acceptability and preliminary effectiveness of the program in reducing fear, reducing falls, and improving function among individuals poststroke in Guyana.

Methods

A quasi-experimental pilot study with a pretest/posttest in-group design was developed through a collaboration of researchers in Guyana and the US. Participants took part in the falls prevention program for 8 weeks. Outcome measures included a 10-m walk test, the Five Times Sit to Stand Test, and subjective questionnaires for falls incidence and balance confidence at the beginning and end.

Results

Twenty participants completed the study. One participant experienced medical complications, and their data were excluded from analysis. Fifteen participants (78.9%) demonstrated improvements in comfortable and fast walking speed. Twelve participants completed the Five Times Sit to Stand Test. Eleven (91.67%) improved their time at the posttest, with 9 (81.8%) demonstrating a clinically important improvement. Nineteen participants had sustained at least 1 fall prior to the study. Only 1 participant reported a fall during the program. Initially, the majority of participants (11/19) were very concerned about falling. At the end, only 1 was very concerned about falling, and the majority (15/19) were not concerned at all. Posttest surveys of participants indicated acceptability of the program.

Conclusions

This pilot program helped reduce fall risk and improve confidence, gait speed, and community mobility of the study participants. Future research at other rehabilitation departments in Guyana would help increase the generalizability of the program.

Impact

The program can be used clinically by physical therapists in Guyana, both in departments and as a home program. Shared knowledge and experience of researchers considering research evidence and the environmental, social, and economic conditions of people living in Guyana were important in developing an effective program.
Exploring the association between circulating endothelial protein C receptor and disease activity of rheumatoid arthritis in a pilot study
Authors: Xue Meilang , Lin Haiyan , Lynch Tom , Bereza-Malcolm Lara , Sinnathurai Premarani , Thomas Ranjeny , Keen Helen , Hill Catherine , Lester Susan , Wechalekar Mihir , March Lyn
Published: August 2024

Objectives

To investigate whether circulating endothelial protein C receptor (EPCR) is associated with disease activity and inflammatory markers in rheumatoid arthritis.

Methods

Thirty-eight RA patients and 21 healthy controls (HC) were recruited via the A3BC biobank. Peripheral blood mononuclear cells and plasma were isolated from the blood of these participants. Plasma soluble (s)EPCR, IL-6, IL-17 and sCD14 were measured by enzyme-linked immunosorbent assay, cell membrane-associated (m)EPCR by flow cytometry; EPCR gene H3 single nucleotide polymorphism (SNP), which contributes to high plasma sEPCR levels, by PCR and DNA sequencing. Data were analysed using FlowJo10 and GraphPad Prism 10.

Results

RA patients had higher levels of mEPCR on T cells and plasma sEPCR compared with HC. No difference in the EPCR gene H3 SNP G genotype frequency was found between RA and HC. This SNP was significantly correlated with higher sEPCR levels in HC but not in RA patients. In RA, plasma sEPCR levels were positively correlated with IL-6, IL-17, sCD14, anti-CCP and rheumatoid factor. In contrast, mEPCR levels on T cells and natural killer cells (NK) were inversely associated with disease activity measures including 28/66 swollen joint count, 28/68 tender joint count and/or DAS28-CRP/ESR scores, and positively correlated with EPCR gene H3 SNP, which was also correlated with lower disease activity measures in RA.

Conclusion

Our findings suggest that EPCR may play an important role in RA, with plasma sEPCR being potentially associated with inflammatory markers and mEPCR and the EPCR gene H3 SNP possibly related to disease activity measures.
Rutin mitigates acetic acid-induced ulcerative colitis: novel coloprotective mechanism
Authors: Sherif Iman O , Al-Shaalan Nora H , Awadin Walaa F
Published: August 2024

Background

Ulcerative colitis, an inflammatory bowel disease, is characterized by a status of oxidative stress and inflammation. Rutin is a natural flavonoid with many pharmacological activities and its role in acetic acid-induced ulcerative colitis through the high mobility group B1 (HMGB1)/ toll-like receptor-4 (TLR4)/ myeloid differentiation primary response protein 88 (MYD88)/ nuclear factor-kB (NF-kB) signaling pathway needs to be explored.

Methods

Four experimental groups were divided into control group, rutin group: treated with 100 mg/kg/day rutin orally for 10 days, acetic acid (AA) group: given intracolonic instillation of AA to induce ulcerative colitis, and acetic acid with rutin treatment (AA/Rutin) group.

Results

Acetic acid caused a marked increase in the colon weight/length ratio and induced colonic histopathological changes, leading to a marked rise in the colonic histopathological scores. Acetic acid exhibited a significant rise in LDH and CRP serum levels as well as TOS colonic levels, accompanied by a marked decline in TAS colonic contents compared to the control group. Moreover, AA-induced activation of the HMGB1/TLR4/MYD88/NF-kB signaling pathway. Rutin demonstrated a significant decrease in the colon weight/length ratio, ameliorated the colonic histopathological changes induced by AA, and exhibited a marked decline in the colonic histopathological scores. Rutin showed a significant decrease in serum LDH, and CRP levels as well as colonic TOS contents when compared with the AA group. Rutin suppressed the colonic activation of the HMGB1/TLR4/MYD88/NF-kB signaling pathway.

Conclusion

Rutin could be a promising coloprotective agent against AA-induced ulcerative colitis by targeting the HMGB1/TLR4/MYD88/NF-kB signaling pathway.
Comparative in silico and in vitro evaluation of possible toxic effects of bisphenol derivatives in HepG2 cells
Authors: Balci-Ozyurt Aylin , Yirun Anıl , Cakır Deniz Arca , Ozcelik İbrahim , Bacanli Merve , Ozkemahli Gizem , Sabuncuoglu Suna , Basaran Nursen , Erkekoglu Pınar
Published: August 2024

Introduction

Bisphenols are widely used in the production of polycarbonate plastics and resin coatings. Bisphenol A (BPA) is suggested to cause a wide range of unwanted effects and “low dose toxicity”. With the search for alternative substances to BPA, the use of other bisphenol derivatives namely bisphenol F (BPF) and bisphenol S (BPS) has increased.

Methods

In the current study, we aimed to evaluate the in silico predicted inhibitory concentration 50s (pIC50s) of bisphenol derivatives on immune and apoptotic markers and DNA damage on HepG2 cells. Moreover, apoptotic, genotoxic and immunotoxic effects of BPA, BPF and BPS were determined comparatively. Effects of bisphenols on apoptosis were evaluated by detecting different caspase activities. The genotoxic effects of bisphenols were evaluated by measuring the levels of 8-hydroxy-2′-deoxyguanosine (8-OHdG) and 8-oxoguanine glycosylase (OGG1). To determine the immunotoxic effect of bisphenol derivatives, the levels of interleukin 4 (IL-4) and interleukin 10 (IL-10), transforming growth factor beta (TGF-β) and tumor necrosis factor-alpha (TNF-α), which are known to be expressed by HepG2 cells, were measured. Results: In silico data indicate that all of the bisphenols may cause alterations in immune and apoptotic markers as well as DNA damage at low doses. İn vitro data revealed that all bisphenol derivatives could affect immune markers at inhibitory concentration 30s (IC30s). In addition, BPF and BPS may also have apoptotic immunotoxic effects.

Conclusion

Both in silico and in vivo research are needed further to examine the toxic effects of alternative bisphenol derivatives.
Phosphorus-induced restructuring of the ascorbate–glutathione cycle and lignin biosynthesis alleviates manganese toxicity in peach roots
Authors: Noor Iqra , Sohail Hamza , Wentao Cao , Zhu Kaijie , Hasanuzzaman Mirza , Li Guohuai , Liu Junwei
Published: August 2024

Manganese (Mn) is indispensable for plant growth, but its excessive uptake in acidic soils leads to toxicity, hampering food safety. Phosphorus (P) application is known to mitigate Mn toxicity, yet the underlying molecular mechanism remains elusive. Here, we conducted physiological and transcriptomic analyses of peach roots response to P supply under Mn toxicity. Manganese treatment disrupted root architecture and caused ultrastructural damage due to oxidative injury. Notably, P application ameliorated the detrimental effects and improved the damaged roots by preventing the shrinkage of cortical cells, epidermis and endodermis, as well as reducing the accumulation of reactive oxygen species (ROS). Transcriptomic analysis revealed the differentially expressed genes enriched in phenylpropanoid biosynthesis, cysteine, methionine and glutathione metabolism under Mn and P treatments. Phosphorus application upregulated the transcripts and activities of core enzymes crucial for lignin biosynthesis, enhancing cell wall integrity. Furthermore, P treatment activated ascorbate–glutathione cycle, augmenting ROS detoxification. Additionally, under Mn toxicity, P application downregulated Mn uptake transporter while enhancing vacuolar sequestration transporter transcripts, reducing Mn uptake and facilitating vacuolar storage. Collectively, P application prevents Mn accumulation in roots by modulating Mn transporters, bolstering lignin biosynthesis and attenuating oxidative stress, thereby improving root growth under Mn toxicity. Our findings provide novel insights into the mechanism of P-mediated alleviation of Mn stress and strategies for managing metal toxicity in peach orchards.
A Diagnostic Guide for Orange Rust Disease in Sugarcane
Authors: Cárdenas Daniela E. , Carrillo-Tarazona Yisel , Sood Sushma G. , Hincapie Martha A. , Wang Jianping , Rott Philippe C. , Cano Liliana M.
Published: August 2024

Puccinia kuehnii is an important airborne fungal pathogen of sugarcane, causing orange rust disease. P. kuehnii has been present in the Asia–Oceania region for over a century. The first report of this pathogen in the Western Hemisphere was in 2007, when it appeared in Florida, U.S.A. The main objective of this diagnostic guide is to provide detailed information about symptoms and signs of sugarcane orange rust as well as taxonomy, geographic distribution, isolation, identification, and storage of P. kuehnii. We also highlight the management strategies used in recent years to control this devastating fungal disease. This diagnostic guide will help facilitate future research focusing on fungal isolation procedures, genetics, and population studies of this pathogen.
A Diagnostic Guide for Fusarium Fruit Rot of Pumpkin and Winter Squash
Authors: Krasnow Charles S. , Bhatta Usha , Raphael Ginat , Quesada-Ocampo Lina M. , Ziv Carmit
Published: August 2024

Fusarium fruit rot caused by Fusarium solani f. sp. cucurbitae is an important postharvest disease impacting the global production and storage of pumpkins and winter squash ( Cucurbita spp.). The pathogen infects fruit through wounds, causing water-soaked lesions that may become sunken, coalesce, and be covered by fine mycelial growth. F. solani is soilborne and can survive long term in soil and plant debris. Storage rots impact several Cucurbita spp. grown for long-term storage. F. solani f. sp. cucurbitae has two races and is the most commonly found Fusarium species infecting cucurbits. Identification includes morphologic and PCR-based methods. This guide outlines taxonomy, symptoms, isolation, and epidemiology and provides methods to identify the pathogen.
Contribution of Basic Science Education to the Professional Identity Development of Medical Learners: A Critical Scoping Review
Authors: Lindsley Janet E. , Abali Emine E. , Asare Elliot A. , Chow Candace J. , Cluff Caden , Hernandez Marisol , Jamieson Susan , Kaushal Amit , Woods Nicole N.
Published: August 2024

Purpose

Professional identity development (PID) has become an important focus of medical education. To date, contributions of basic science education to physician PID have not been broadly explored. This review explores the literature surrounding the contribution of basic science education to the PID of medical learners and interprets findings critically in terms of the landscapes of practice (LoP) framework.

Method

In this critical scoping review, the authors searched 12 different databases and professional organization websites from January 1988 to October 2022 for references relating to how, if at all, the basic science component of medical education contributes to the PID of medical learners. The LoP learning theory was chosen as a framework for critically interpreting the identified articles.

Results

Of the 6,674 identified references, 257 met the inclusion criteria. After data extraction, content analysis of recorded key findings was used to ensure all findings were incorporated into the synthesis. Findings aligned with and were critically interpreted in relation to the 3 LoP modes of identification: engagement (engaging in the work of a physician), imagination (imagining oneself becoming a “good doctor”), and alignment (aligning with the practices and expectations of a medical community or specialty). Within each mode of identification, it was possible to see how basic science may support, or catalyze, PID and how basic science may serve as a barrier, or an inhibitor, to PID or contribute to the development of negative aspects of identity development.

Conclusions

The LoP learning theory suggests that the effect of basic science on physicians’ PID is most effective if educators view themselves as guides through interfaces between their scientific disciplines and medicine. Learners need opportunities to be engaged, to imagine how their current learning activities and developing skills will be useful as future physicians, and to feel alignment with medical specialties.
Fascial plane blocks: from microanatomy to clinical applications
Authors: Pirri Carmelo , Torre Debora Emanuela , Stecco Carla
Published: August 2024

Purpose of review

In the last 20 years, advancements in the understanding of fasciae have significantly transformed anaesthesia and surgery. Fascial plane blocks (FPBs) have gained popularity due to their validated safety profile and relative ease. They are used in various clinical settings for surgical and nonsurgical indications. Growing evidence suggests a link between the microscopic anatomy of fasciae and their mechanism of action. As a result, knowledge of these aspects is urgently needed to better optimise pain management. The purpose of this review is to summarise the different microscopic aspects of deep/muscular fascia to expand our understanding in the performance of FPBs.

Recent findings

There is ample evidence to support the role of FPBs in pain management. However, the exact mechanism of action remains unclear. Fasciae are composed of various structural elements and display complex anatomical characteristics at the microscopic level. They include various cell types embedded within an extracellular matrix abundant in collagens and hyaluronan. Increasingly, numerous studies demonstrated their innervation that contributes to their sensory functions and their role in proprioception, motor coordination and pain perception. Lastly, the diversity of the cellular and extracellular matrix, with their viscoelastic properties, is essential to understanding the FPBs’ mechanism of action.

Physicians must be aware of the role of fascial microscopic anatomy and better understand their properties to perform FPBs in a conscious manner and enhance pain management.
Family Involvement During Comprehensive Developmental Evaluations: Perspectives of Diverse Mothers
Authors: Blakey Ariel O. , Eilenberg Jenna Sandler , Cardona Nicole , Kizildag Deniz , Broder-Fingert Sarabeth , Feinberg Emily , Long Kristin A.
Published: August 2024

Objective:

Early diagnosis and social support postdiagnosis (i.e., family involvement) can lead to improved outcomes for children with autism spectrum disorder (ASD) and other developmental disorders. Children of minority ethnic and racial groups are typically diagnosed later in childhood compared with White children, contributing to disparities in outcomes. Research has not yet explored family involvement during comprehensive developmental evaluations nor accounted for cross-cultural differences in family roles and involvement. This qualitative study sought to characterize the nature and impact of family involvement during the developmental evaluation process among racially and ethnically marginalized mothers of children with developmental delays and possible ASD.

Methods:

Mothers (N = 27) of children who had a positive autism screen during their 18- or 24-month well-child visit but did not receive an ASD diagnosis after comprehensive developmental evaluation participated in individual semi-structured interviews exploring experiences with developmental screening, related services, and family involvement/social support. Qualitative data were transcribed, coded, and analyzed using applied thematic analysis. Data were stratified by partner status (i.e., partnered vs. nonpartnered) to examine differences in support and family involvement across varying family compositions.

Results:

Three qualitative themes emerged: (1) mothers sought family involvement when making decisions about pursuing developmental evaluations, (2) family involvement affected mothers' navigation of logistical challenges, and (3) mothers involved family members for emotional support. Differences by partner status emerged in themes 1 and 2.

Conclusion:

Findings highlight benefits of and potential approaches to harnessing family involvement to support parents' navigation of the developmental evaluation process and ultimately improve child outcomes.
Studying Continuous, Time-varying, and/or Complex Exposures Using Longitudinal Modified Treatment Policies
Authors: Hoffman Katherine L. , Salazar-Barreto Diego , Williams Nicholas T. , Rudolph Kara E. , Díaz Iván
Published: August 2024

This tutorial discusses a methodology for causal inference using longitudinal modified treatment policies. This method facilitates the mathematical formalization, identification, and estimation of many novel parameters and mathematically generalizes many commonly used parameters, such as the average treatment effect. Longitudinal modified treatment policies apply to a wide variety of exposures, including binary, multivariate, and continuous, and can accommodate time-varying treatments and confounders, competing risks, loss to follow-up, as well as survival, binary, or continuous outcomes. Longitudinal modified treatment policies can be seen as an extension of static and dynamic interventions to involve the natural value of treatment and, like dynamic interventions, can be used to define alternative estimands with a positivity assumption that is more likely to be satisfied than estimands corresponding to static interventions. This tutorial aims to illustrate several practical uses of the longitudinal modified treatment policy methodology, including describing different estimation strategies and their corresponding advantages and disadvantages. We provide numerous examples of types of research questions that can be answered using longitudinal modified treatment policies. We go into more depth with one of these examples, specifically, estimating the effect of delaying intubation on critically ill COVID-19 patients’ mortality. We demonstrate the use of the open-source R package lmtp to estimate the effects, and we provide code on https://github.com/kathoffman/lmtp-tutorial.
Unravelling the vaginal microbiome, impact on health and disease
Authors: Plummer Erica L. , Vodstrcil Lenka A. , Bradshaw Catriona S.
Published: August 2024

Purpose of review

The vaginal microbiome has a fundamental role in supporting optimal vaginal, reproductive, and sexual health. Conversely, dysbiosis of the vaginal microbiome is linked to vaginal symptoms and adverse health outcomes. This review summarizes recent literature concerning the role of the vaginal microbiome in health and disease, with a focus on the most common vaginal dysbiosis, bacterial vaginosis.

Recent findings

Molecular studies have expanded our understanding of the composition of the vaginal microbiome. Lactic acid-producing lactobacilli are an important component of host defences against pathogens, whereas a paucity of lactobacilli is associated with adverse sequelae. Bacterial vaginosis is characterized by low levels of lactobacilli and increased levels of nonoptimal anaerobes; however, the exact cause remains unclear. Furthermore, despite decades of research, bacterial vaginosis recurrence rates following standard treatment are unacceptably high. Strategies to improve bacterial vaginosis cure and promote an optimal lactobacilli-dominated vaginal microbiome are being investigated. Importantly, historical and emerging evidence supports the sexual transmission of bacterial vaginosis, which opens exciting opportunities for novel treatments that incorporate partners.

A mechanistic and deeper understanding of the vaginal microbiome in health and disease is needed to inform ongoing development of therapeutics to improve bacterial vaginosis cure. Partner treatment holds promise for improving bacterial vaginosis cure.
Providing adolescent-friendly sexually transmitted infection screening and treatment services
Authors: Friedman Julie C. , Cannon Bianca , Tyson Nichole , Kang Melissa
Published: August 2024

Purpose of review

There are high rates of sexually transmitted infections (STIs) worldwide. Adolescents and young adults (AYA) ages 15–24 years remain one of the populations that is most vulnerable to STIs. The goal of this review is to summarize recent international updates in adolescent STI screening and treatment.

Recent findings

Normalizing sexual history taking and STI testing, and advocating for adolescents to receive comprehensive sexuality education improves stigma surrounding sexual health. The global rise in syphilis is pervasive and includes high rates of infection among AYA and women of reproductive age – universal screening may be indicated depending on local epidemiology. Gonococcal antimicrobial resistance remains a significant public health concern worldwide, thus judicious use of antimicrobials and reporting cases of resistance is crucial. Sexual health services are increasingly using virtual platforms, which may be an effective strategy for STI testing and treatment among AYA.

Specific areas of focus to address the STI epidemic among AYA include reducing stigma surrounding sexual health, screening, and treatment of STIs, especially with the global rise in syphilis and high rates of gonorrhea resistance, in addition to increased use of telehealth services as effective education and intervention strategies.
Enhancing equity in cervical screening – initiatives to increase screening participation
Authors: Costa Telma , Bateson Deborah , Woo Yin Ling
Published: August 2024

Purpose of review

Cervical cancer can be eliminated as a public health problem through a three-pillar approach including high coverage of human papillomavirus (HPV) vaccination and HPV-based cervical screening, and treatment of precancers and invasive cancers. However, access inequities prevent many women and people with a cervix benefitting from these life-saving advances. This review focuses on evidence-based interventions that can improve equity and scale-up of cervical screening.

Recent findings

The transition from conventional cytology to HPV screening provides multiple opportunities to address equity and a multipronged approach can be used to identify priority groups, understand barriers and develop tailored solutions. There are proven financing mechanisms, tools, technologies and screening delivery methods to overcome screening barriers in different settings. This includes self-sampling interventions, point-of-care testing, health service integration, consumer-led co-design processes and digital screening registries.

To achieve cervical cancer elimination globally, cervical screening must be delivered in an inclusive, culturally safe and context-appropriate manner. There are multiple tools and strategies that can be implemented to improve participation of never- and under-screened groups, and to enhance equity in cervical screening.
No test medical abortion – a review of the evidence on selective use of preabortion testing
Authors: Cleeve Amanda , Wallengren Emma , Brandell Karin , Lee Sabrina , Endler Margit , Reynolds-Wright John
Published: August 2024

Purpose of review

The last decade has seen a cascade of different telemedicine models for medical abortion (MA) being tested and implemented. Among these service delivery models is the ‘no-test’ MA model, in which care is provided remotely and eligibility for the MA is based on history alone. The purpose of this review is to provide an overview of the existing evidence for no-test MA.

Recent findings

The evidence base for no-test MA relies heavily on cohort and noncomparative studies predominantly from high resource settings. Recent findings indicate that no-test MA is safe, effective, and highly acceptable. Diagnoses of ectopic pregnancy and underestimation of gestational age were rare. Identified advantages included shortening time to access MA and mitigating access barriers such as cost, and geographical barriers. Abortion seekers valued omitting the ultrasound citing reasons such as privacy concerns, costs, more flexibility, and control. The impacts of no-test MA on unscheduled postabortion contacts and visits and on contraceptive use were unclear due to limited evidence.

No-test MA can be provided to complement other care pathways including those with some or no in-person care. Further research is needed to allow for widespread adoption of no-test MA and scale-up in a variety of contexts, including low-resource settings.
Subareolar Sealant Reduces Minor Complications and Surgery for Necrosis in Prosthetic Reconstruction after Nipple-sparing Mastectomy
Authors: Bushong Elizabeth E. , Wesely Nicholas , Huffman Cuyler , Komorowska-Timek Ewa D.
Published: August 2024

Nipple-sparing mastectomy (NSM) is aesthetically superior to skin-sparing only mastectomy or reconstructed nipples. However, nipple-sparing mastectomy partially preserves nipple ducts, which are remaining communications between the environment and breast pocket that can potentially allow bacteria transfer and compromise the prosthesis. Previous methods to create a subareolar “barrier” to reduce through-duct bacteria penetration involve subpectoral implant placement, adjunct meshes or acellular dermal matrix, and external nipple adhesives. To further protect the implant from nipple-derived contamination, we propose subareolar sealant (SAS). SAS involves the application of a synthetic sealant on the nipple undersurface before implant placement. In our study, we analyzed 77 breasts that received prepectoral prosthetic breast reconstruction. SAS was used in 70 of 77 breasts. All breasts received adjunctive acellular dermal matrix. Comparing SAS versus no-SAS, we found that no-SAS was associated with 10.4-fold more infections (P = 0.032) and 17.3-fold more re-hospitalizations (P = 0.017). No-SAS also resulted in more “at least one major complication” (P < 0.001), capsular contracture (P < 0.001), and necrosis requiring surgery (P < 0.001). Due to the small no-SAS sample size, goodness-of-fit (Quasi-likelihood independence model) criteria was applied, and a post hoc power analysis was calculated. Erythema, all minor complications, dehiscence, and necrosis requiring surgery remained significant (all P < 0.0001). This innovative technique markedly reduces overall minor complications and necrosis requiring surgery. A larger no-SAS sample size is required to adequately determine whether SAS reduces infection and hospitalization rates. Nonetheless, SAS reduces complications and is cost effective compared with other adjunct materials.
Geometric Morphometric Study on Distinguishing Metopic Craniosynostosis from Metopic Ridging
Authors: Sakamoto Yoshiaki , Amano Hideki , Ogihara Naomichi , Miwa Tomoru , Tamada Ikkei , Hikosaka Makoto , Imai Keisuke
Published: August 2024

Background:

Craniosynostosis, a common congenital anomaly, results from premature fusion of the cranial sutures. One of the forms of craniosynostosis is premature fusion of the metopic suture, referred to as trigonocephaly, but the diagnosis of metopic suture synostosis remains controversial. The purpose of this study was to clarify, using geometric morphometric analysis, if a metopic ridge alone observed in cases of mild trigonocephaly represents a pathological phenomenon.

Methods:

Three different cranial morphologies were compared among patients up to 2 years old who were categorized into the true group, the mild group, and the normal group, based on the presence or absence of specific symptoms, history of cranioplasty for trigonocephaly, or lack of any abnormality on computed tomography. Using the obtained computed tomography images, 235 anatomical landmarks and semi-landmarks were plotted on the entire cranial surface for analysis of neurocranial morphology, and the cranial shapes represented by landmarks were analyzed using geometric morphometrics. Principal components of shape variations among specimens were then computed, based on the variance–covariance matrix of the Procrustes residuals of all specimens, and statistically analyzed.

Results:

The principal component analyses of the variations in endocranial shape, frontal bone shape, and occipital bone shape did not show any significant differences in cranial morphology between mild trigonocephaly and normal skulls; however, true trigonocephaly was found to differ significantly from mild trigonocephaly and normal skulls.

Conclusions:

These findings suggest that in assessments of cranial morphology, the presence of a ridge alone cannot be diagnosed as fundamentally pathological, and may represent normal morphology.