keyword
https://read.qxmd.com/read/38652748/plasmid-partitioning-driven-by-collective-migration-of-para-between-nucleoid-lobes
#1
JOURNAL ARTICLE
Robin Köhler, Seán M Murray
The ParABS system is crucial for the faithful segregation and inheritance of many bacterial chromosomes and low-copy-number plasmids. However, despite extensive research, the spatiotemporal dynamics of the ATPase ParA and its connection to the dynamics and positioning of the ParB-coated cargo have remained unclear. In this study, we utilize high-throughput imaging, quantitative data analysis, and computational modeling to explore the in vivo dynamics of ParA and its interaction with ParB-coated plasmids and the nucleoid...
April 30, 2024: Proceedings of the National Academy of Sciences of the United States of America
https://read.qxmd.com/read/38650896/comprehensive-overview-of-genotype-distribution-and-prevalence-of-human-papillomavirus-in-cervical-lesions
#2
JOURNAL ARTICLE
Yuhong Ye, Terrel Jones, Tiannan Wang, Xianxu Zeng, Yang Liu, Chengquan Zhao
Across cervical squamous and glandular lesions, a spectrum of human papillomavirus (HPV) genotypes has been identified. This review aims to provide a comprehensive summary detailing the distribution and profile of HPV genotypes detected in cervical lesions, leveraging insights from histological and cytological findings. High-risk HPV (HR-HPV) genotypes exhibit varying degrees of oncogenic potential, with HPV16 and HPV18 identified as the most prevalent and oncogenic types. The distribution of HR-HPV genotypes varies among different degrees of the cervical lesions and varies between squamous and glandular neoplasia...
April 2024: Gynecol Obstet Clin Med
https://read.qxmd.com/read/38650623/exploring-research-hotspots-and-future-directions-in-neural-tube-defects-field-by-bibliometric-and-bioinformatics-analysis
#3
JOURNAL ARTICLE
Rui Cao, Yanbing Su, Jianting Li, Ruifang Ao, Xiangchao Xu, Yuxiang Liang, Zhizhen Liu, Qi Yu, Jun Xie
BACKGROUND: Neural tube defects (NTDs) is the most common birth defect of the central nervous system (CNS) which causes the death of almost 88,000 people every year around the world. Much efforts have been made to investigate the reasons that contribute to NTD and explore new ways to for prevention. We trawl the past decade (2013-2022) published records in order to get a worldwide view about NTDs research field. METHODS: 7,437 records about NTDs were retrieved from the Web of Science (WOS) database...
2024: Frontiers in Neuroscience
https://read.qxmd.com/read/38633402/cooperative-conformational-transitions-underpin-the-activation-heat-capacity-in-the-temperature-dependence-of-enzyme-catalysis
#4
JOURNAL ARTICLE
Emma J Walker, Carlin J Hamill, Rory Crean, Michael S Connolly, Annmaree K Warrender, Kirsty L Kraakman, Erica J Prentice, Alistair Steyn-Ross, Moira Steyn-Ross, Christopher R Pudney, Marc W van der Kamp, Louis A Schipper, Adrian J Mulholland, Vickery L Arcus
Many enzymes display non-Arrhenius behavior with curved Arrhenius plots in the absence of denaturation. There has been significant debate about the origin of this behavior and recently the role of the activation heat capacity (Δ C P ⧧ ) has been widely discussed. If enzyme-catalyzed reactions occur with appreciable negative values of Δ C P ⧧ (arising from narrowing of the conformational space along the reaction coordinate), then curved Arrhenius plots are a consequence. To investigate these phenomena in detail, we have collected high precision temperature-rate data over a wide temperature interval for a model glycosidase enzyme MalL, and a series of mutants that change the temperature-dependence of the enzyme-catalyzed rate...
April 5, 2024: ACS Catalysis
https://read.qxmd.com/read/38632916/green-education-divide-a-comparative-case-study-analysis-of-countries-of-the-association-of-southeast-asian-nations
#5
JOURNAL ARTICLE
Hui Hui Teow, Pervaiz K Ahmed, Mahendhiran Sanggaran Nair, Santha Vaithilingam
BACKGROUND: Green education is an essential precursor to promoting long-term sustainable practices and fostering environmentally conscious behaviours, especially among the younger generations. Such education equips individuals with the knowledge, awareness, and experiences necessary for green behavioural shifts, empowering them to engage actively in sustainable practices in the long run, which is essential for ensuring environmental sustainability. However, green education practices and policies vary among the countries of the Association of Southeast Asian Nations (ASEAN) owing to different levels of socioeconomic development, national priorities, and capacities of each member state...
April 2024: Lancet. Planetary Health
https://read.qxmd.com/read/38625776/adaptive-individual-q-learning-a-multiagent-reinforcement-learning-method-for-coordination-optimization
#6
JOURNAL ARTICLE
Zhen Zhang, Dongqing Wang
Multiagent reinforcement learning (MARL) has been extensively applied to coordination optimization for its task distribution and scalability. The goal of the MARL algorithms for coordination optimization is to learn the optimal joint strategy that maximizes the expected cumulative reward of all agents. Some cooperative MARL algorithms exhibit exciting characteristics in empirical studies. However, the majority of the convergence results are confined to repeated games. Moreover, few MARL algorithms consider adaptation to the switched environments such as the alternation between peak hours and off-peak hours of urban traffic flow or an obstacle suddenly appearing on the planned route for the automated guided vehicle...
April 16, 2024: IEEE Transactions on Neural Networks and Learning Systems
https://read.qxmd.com/read/38623621/mechanistic-studies-on-single-electron-transfer-in-frustrated-lewis-pairs-and-its-application-to-main-group-chemistry
#7
REVIEW
Lars J C van der Zee, Jelle Hofman, Joost M van Gaalen, J Chris Slootweg
Advances in the field of frustrated Lewis pair (FLP) chemistry have led to the discovery of radical pairs, obtained by a single-electron transfer (SET) from the Lewis base to the Lewis acid. Radical pairs are intriguing for their potential to enable cooperative activation of challenging substrates ( e.g. , CH4 , N2 ) in a homolytic fashion, as well as the exploration of novel radical reactions. In this review, we will cover the two known mechanisms of SET in FLPs-thermal and photoinduced-along with methods ( i...
April 16, 2024: Chemical Society Reviews
https://read.qxmd.com/read/38622731/a-systematic-review-of-instrumented-assessments-for-upper-limb-function-in-cerebral-palsy-current-limitations-and-future-directions
#8
REVIEW
Julie Rozaire, Clémence Paquin, Lauren Henry, Hovannes Agopyan, Rachel Bard-Pondarré, Alexandre Naaim, Sonia Duprey, Emmanuelle Chaleat-Valayer
INTRODUCTION: Recently, interest in quantifying upper limb function in cerebral palsy has grown. However, the lack of reference tasks and protocols, have hindered the development of quantified movement analysis in clinical practice. This study aimed to evaluate existing instrumented assessments of upper limb function in cerebral palsy, with a focus on their clinical applicability, to identify reasons for the lack of adoption and provide recommendations for improving clinical relevance and utility...
April 16, 2024: Journal of Neuroengineering and Rehabilitation
https://read.qxmd.com/read/38619428/isolated-fragments-of-intact-microvessels-tissue-vascularization-modeling-and-therapeutics
#9
REVIEW
Hannah A Strobel, Sarah M Moss, James B Hoying
The microvasculature is integral to nearly every tissue in the body, providing not only perfusion to and from the tissue, but also homing sites for immune cells, cellular niches for tissue dynamics, and cooperative interactions with other tissue elements. As a microtissue itself, the microvasculature is a composite of multiple cell types exquisitely organized into structures (individual vessel segments and extensive vessel networks) capable of considerable dynamics and plasticity. Consequently, it has been challenging to include a functional microvasculature in assembled or fabricated tissues...
April 15, 2024: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://read.qxmd.com/read/38614173/impact-of-c-terminal-domains-of-paralogous-single-stranded-dna-binding-proteins-from-streptomyces-coelicolor-on-their-biophysical-properties-and-biological-functions
#10
JOURNAL ARTICLE
Goran Pipalović, Želimira Filić, Mirsada Ćehić, Tina Paradžik, Ksenija Zahradka, Ivo Crnolatac, Dušica Vujaklija
Single-stranded DNA-binding proteins (SSB) are crucial in DNA metabolism. While Escherichia coli SSB is extensively studied, the significance of its C-terminal domain has only recently emerged. This study explored the significance of C-domains of two paralogous Ssb proteins in S. coelicolor. Mutational analyses of C-domains uncovered a novel role of SsbA during sporulation-specific cell division and demonstrated that the C-tip is non-essential for survival. In vitro methods revealed altered biophysical and biochemical properties of Ssb proteins with modified C-domains...
April 11, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38611169/effect-of-starch-and-paperboard-reinforcing-structures-on-insulative-fiber-foam-composites
#11
JOURNAL ARTICLE
Gregory M Glenn, Gustavo H D Tonoli, Luiz E Silva, Artur P Klamczynski, Delilah Wood, Bor-Sen Chiou, Charles Lee, William Hart-Cooper, Zach McCaffrey, William Orts
Single-use plastic foams are used extensively as interior packaging to insulate and protect items during shipment but have come under increasing scrutiny due to the volume sent to landfills and their negative impact on the environment. Insulative compression molded cellulose fiber foams could be a viable alternative, but they do not have the mechanical strength of plastic foams. To address this issue, a novel approach was used that combined the insulative properties of cellulose fiber foams, a binder (starch), and three different reinforcing paperboard elements (angular, cylindrical, and grid) to make low-density foam composites with excellent mechanical strength...
March 26, 2024: Polymers
https://read.qxmd.com/read/38610054/the-effect-of-physical-therapy-and-mechanical-stimulation-on-dysfunction-of-lower-extremities-after-total-pelvic-exenteration-in-cervical-carcinoma-patient-with-rectovesicovaginal-fistula-induced-by-radiotherapy-a-case-report
#12
JOURNAL ARTICLE
Wujian Lin, Bing Yao, Jiahui He, Shuangyan Lin, Yafei Wang, Fangting Chen, Weichao Zhang, Jiashu Yang, Zhihong Ye, Jianguang Qiu, Yuling Wang
BACKGROUND: Total pelvic exenteration is the ultimate solution for rectovesicovaginal fistula caused by radiation therapy, yet total pelvic exenteration frequently causes intraoperative complications and postoperative complications. These complications are responsible for the dysfunction of lower extremities, impaired quality of life, and even the high long-term morbidity rate, thus multidisciplinary cooperation and early intervention for prevention of complications are necessary. Physical therapy was found to reduce the postoperative complications and promote rehabilitation, yet the effect on how physiotherapy prevents and treats complications after total pelvic exenteration and pelvic lymphadenectomy remains unclear...
April 13, 2024: Journal of Medical Case Reports
https://read.qxmd.com/read/38608828/convergence-of-oxytocin-and-dopamine-signaling-in-neuronal-circuits-insights-into-the-neurobiology-of-social-interactions-across-species
#13
REVIEW
Virginie Rappeneau, Fernando Castillo-Díaz
Social behaviours are essential for animal survival, and the hypothalamic neuropeptide oxytocin (OXT) critically impacts bonding, parenting, and decision-making. Dopamine (DA), is released by ventral tegmental area (VTA) dopaminergic neurons, regulating social cues in the mesolimbic system. Despite extensive exploration of OXT and DA roles in social behaviour independently, limited studies investigate their interplay. This narrative review integrates insights from human and animal studies, particularly rodents, emphasising recent research on pharmacological manipulations of OXT or DA systems in social behaviour...
April 10, 2024: Neuroscience and Biobehavioral Reviews
https://read.qxmd.com/read/38607046/cooperation-of-various-cytoskeletal-components-orchestrates-intercellular-spread-of-mitochondria-between-b-lymphoma-cells-through-tunnelling-nanotubes
#14
JOURNAL ARTICLE
Henriett Halász, Viktória Tárnai, János Matkó, Miklós Nyitrai, Edina Szabó-Meleg
Membrane nanotubes (NTs) are dynamic communication channels connecting spatially separated cells even over long distances and promoting the transport of different cellular cargos. NTs are also involved in the intercellular spread of different pathogens and the deterioration of some neurological disorders. Transport processes via NTs may be controlled by cytoskeletal elements. NTs are frequently observed membrane projections in numerous mammalian cell lines, including various immune cells, but their functional significance in the 'antibody factory' B cells is poorly elucidated...
March 30, 2024: Cells
https://read.qxmd.com/read/38599250/structural-characteristics-of-amygdala-subregions-in-type-2-diabetes-mellitus
#15
JOURNAL ARTICLE
Wenbin Qiu, Xiaomei Yue, Haoming Huang, Limin Ge, Weiye Lu, Zidong Cao, Yawen Rao, Xin Tan, Yan Wang, Jinjian Wu, Yuna Chen, Shijun Qiu, Gang Li
Type 2 diabetes mellitus (T2DM) patients often suffer from depressive symptoms, which seriously affect cooperation in treatment and nursing. The amygdala plays a significant role in depression. This study aims to explore the microstructural alterations of the amygdala in T2DM and to investigate the relationship between the alterations and depressive symptoms. Fifty T2DM and 50 healthy controls were included. Firstly, the volumes of subcortical regions and subregions of amygdala were calculated by FreeSurfer...
April 8, 2024: Behavioural Brain Research
https://read.qxmd.com/read/38596896/comprehensive-management-of-challenging-recurrent-aortoiliac-and-lower-extremity-occlusive-disease-with-simultaneous-modified-covered-endovascular-reconstruction-of-the-aortic-bifurcation-inferior-mesenteric-artery-snorkel-and-lower-extremity-bypass
#16
JOURNAL ARTICLE
Wei Li, Dixon Santana, Cooper Phillips
OBJECTIVES: Despite recent advancements in endovascular technology and proven durability of open surgeries, managing extensive aortoiliac occlusive disease (AIOD) with concurrent severe lower extremity (LE) arterial occlusion remains a formidable challenge. This paper introduces a comprehensive approach to addressing recurrent AIOD and LE occlusive diseases by employing modified-CERAB, inferior mesenteric artery (IMA) snorkel, and LE bypass in a challenging case. METHODS: A 56-year-old male patient presented with subacute bilateral lower extremity rest pain with dry gangrene in the left great toe and a complex medical history...
April 10, 2024: Vascular
https://read.qxmd.com/read/38593644/focused-active-learning-for-histopathological-image-classification
#17
JOURNAL ARTICLE
Arne Schmidt, Pablo Morales-Álvarez, Lee Ad Cooper, Lee A Newberg, Andinet Enquobahrie, Rafael Molina, Aggelos K Katsaggelos
Active Learning (AL) has the potential to solve a major problem of digital pathology: the efficient acquisition of labeled data for machine learning algorithms. However, existing AL methods often struggle in realistic settings with artifacts, ambiguities, and class imbalances, as commonly seen in the medical field. The lack of precise uncertainty estimations leads to the acquisition of images with a low informative value. To address these challenges, we propose Focused Active Learning (FocAL), which combines a Bayesian Neural Network with Out-of-Distribution detection to estimate different uncertainties for the acquisition function...
April 4, 2024: Medical Image Analysis
https://read.qxmd.com/read/38586775/the-usefulness-of-deep-tendon-reflexes-in-the-diagnosis-of-lumbar-spine-diseases-a-narrative-review
#18
REVIEW
Tadatsugu Morimoto, Hirohito Hirata, Kazuyuki Watanabe, Kinshi Kato, Koji Otani, Masaaki Mawatari, Takuya Nikaido
The deep tendon reflex (DTR) is a more objective indicator than sensory and muscle assessments for lumbar spine disorders. Further, unlike sensory and muscle assessments that require patient cooperation, the DTR can be assessed even in patients with impaired consciousness or cognition. Therefore, DTR assessment with a hammer is an essential neurological test for lumbar spinal diseases. However, despite the usefulness of DTR assessment, few reports have described the significance of increased, diminished, or absent deep lower extremity reflexes in lumbar spine diseases...
March 2024: Curēus
https://read.qxmd.com/read/38586234/childhood-pneumonia-in-low-and-middle-income-countries-a-systematic-review-of-prevalence-risk-factors-and-healthcare-seeking-behaviors
#19
REVIEW
Selvi M, Sasi Vaithilingan
Childhood pneumonia is a major contributor to illness and death in children under the age of five globally. Despite advancements in medical science, the burden of pediatric community-acquired pneumonia (CAP) remains high, particularly in low- and middle-income countries. This systematic review aims to synthesize existing literature on the prevalence, risk factors, and healthcare-seeking behaviors associated with pediatric CAP to inform the development of targeted community-based interventions. An extensive search of various databases such as Medline, EMBASE, Web of Science, Cochrane, PubMed, PubMed Central, Helinet, SpringerLink, Google Scholar, and Biomed Central was performed, resulting in 65 potentially relevant studies...
April 2024: Curēus
https://read.qxmd.com/read/38585335/identification-of-distinct-immune-signatures-in-inclusion-body-myositis-by-peripheral-blood-immunophenotyping-using-machine-learning-models
#20
JOURNAL ARTICLE
Emily McLeish, Anuradha Sooda, Nataliya Slater, Kelly Beer, Ian Cooper, Frank L Mastaglia, Merrilee Needham, Jerome D Coudert
OBJECTIVE: Inclusion body myositis (IBM) is a progressive late-onset muscle disease characterised by preferential weakness of quadriceps femoris and finger flexors, with elusive causes involving immune, degenerative, genetic and age-related factors. Overlapping with normal muscle ageing makes diagnosis and prognosis problematic. METHODS: We characterised peripheral blood leucocytes in 81 IBM patients and 45 healthy controls using flow cytometry. Using a random forest classifier, we identified immune changes in IBM compared to HC...
2024: Clinical & Translational Immunology
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