keyword
https://read.qxmd.com/read/38635924/dynamic-roles-of-signaling-pathways-in-maintaining-pluripotency-of-mouse-and-human-embryonic-stem-cells
#1
REVIEW
Anagha Oke, Sonal M Manohar
Culturing of mouse and human embryonic stem cells (ESCs) in vitro was a major breakthrough in the field of stem cell biology. These models gained popularity very soon mainly due to their pluripotency. Evidently, the ESCs of mouse and human origin share typical phenotypic responses due to their pluripotent nature, such as self-renewal capacity and potency. The conserved network of core transcription factors regulates these responses. However, significantly different signaling pathways and upstream transcriptional networks regulate expression and activity of these core pluripotency factors in ESCs of both the species...
April 2024: Cellular Reprogramming
https://read.qxmd.com/read/38635923/reprogramming-stars-15-colliding-cellular-reprogramming-paths-an-interview-with-dr-stefan-stricker
#2
JOURNAL ARTICLE
Stefan H Stricker, Carlos-Filipe Pereira
No abstract text is available yet for this article.
April 2024: Cellular Reprogramming
https://read.qxmd.com/read/38635898/vehicular-motions-dominate-the-ion-transport-in-concentrated-litfsi-aqueous-solutions
#3
JOURNAL ARTICLE
Linbo Ma, Jian Jiang
Water-in-salt electrolytes (WiSEs) show great promise for applications in grid-scale energy storage. The design of high-performance WiSEs requires a comprehensive understanding of their microstructures and ion transport properties. In the present work, based on the CL&Pol force field, we have developed a polarizable force field (PFF) tailored for high-concentration LiTFSI aqueous solutions, which accurately reproduces the structural and dynamical properties. Unlike the literature, we do not observe the presence of bulk-like water in LiTFSI solutions exceeding 19 mol/kg...
April 18, 2024: Journal of Physical Chemistry Letters
https://read.qxmd.com/read/38635754/mathematical-modeling-and-dynamics-of-immunological-exhaustion-caused-by-measles-transmissibility-interaction-with-hiv-host
#4
JOURNAL ARTICLE
Dilber Uzun Ozsahin, Najeeb Alam Khan, Araib Aqeel, Hijaz Ahmad, Maged F Alotaibi, Muhammad Ayaz
This paper mainly addressed the study of the transmission dynamics of infectious diseases and analysed the effect of two different types of viruses simultaneously that cause immunodeficiency in the host. The two infectious diseases that often spread in the populace are HIV and measles. The interaction between measles and HIV can cause severe illness and even fatal patient cases. The effects of the measles virus on the host with HIV infection are studied using a mathematical model and their dynamics. Analysing the dynamics of infectious diseases in communities requires the use of mathematical models...
2024: PloS One
https://read.qxmd.com/read/38635726/variable-resource-allocation-pattern-biased-sex-ratio-and-extent-of-sexual-dimorphism-in-subdioecious-hippophae-rhamnoides
#5
JOURNAL ARTICLE
Manisha Jhajhariya, Yash Mangla, Atika Chandra, Shailendra Goel, Rajesh Tandon
Evolutionary maintenance of dioecy is a complex phenomenon and varies by species and underlying pathways. Also, different sexes may exhibit variable resource allocation (RA) patterns among the vegetative and reproductive functions. Such differences are reflected in the extent of sexual dimorphism. Though rarely pursued, investigation on plant species harbouring intermediate sexual phenotypes may reveal useful information on the strategy pertaining to sex-ratios and evolutionary pathways. We studied H. rhamnoides ssp...
2024: PloS One
https://read.qxmd.com/read/38635674/floral-visitors-of-sesame-sesamum-indicum-l-elucidating-their-nectar-robbing-behaviour-and-impacts-on-the-plant-reproduction
#6
JOURNAL ARTICLE
Ujjwal Layek, Trisha Bhandari, Alokesh Das, Prakash Karmakar
Nectar robbing is common in angiosperms, especially in long tubular flowers or flowers with spurs that keep nectar out of reach of visitors. However, the robbing behaviour of bees is less understood. Here, we studied the sesame visitors, their robbing behaviour, and the impacts of robbing on plant reproductive fitness. Diverse insect species (primarily members of Hymenoptera) visited sesame flowers. The most effective pollinators were Amegilla zonata, Apis cerana, Apis dorsata, Apis florea, Ceratina binghami, Halictus acrocephalus and Xylocopa amethystina...
2024: PloS One
https://read.qxmd.com/read/38635655/the-omop-common-data-model-in-australian-primary-care-data-building-a-quality-research-ready-harmonised-dataset
#7
JOURNAL ARTICLE
Roger Ward, Christine Mary Hallinan, David Ormiston-Smith, Christine Chidgey, Dougie Boyle
BACKGROUND: The use of routinely collected health data for secondary research purposes is increasingly recognised as a methodology that advances medical research, improves patient outcomes, and guides policy. This secondary data, as found in electronic medical records (EMRs), can be optimised through conversion into a uniform data structure to enable analysis alongside other comparable health metric datasets. This can be achieved with the Observational Medical Outcomes Partnership Common Data Model (OMOP-CDM), which employs a standardised vocabulary to facilitate systematic analysis across various observational databases...
2024: PloS One
https://read.qxmd.com/read/38635643/spatial-distribution-and-associated-factors-of-co-occurrence-of-overweight-obesity-and-anemia-among-women-in-the-reproductive-age-in-sub-saharan-africa-a-multilevel-analysis-dhs-2016-2021
#8
JOURNAL ARTICLE
Mihret Getnet, Wullo Sisay Sisay, Adugnaw Zeleke Alem
BACKGROUND: Overweight/obesity is one of the major public health problems that affect both developed and developing nations. The co-occurrence of overweight/obesity and anemia is thought to be largely preventable if detected early. To date, no spatial analyses have been performed to identify areas of hotspots for the co-occurrence of overweight/obesity and anemia among reproductive women in sub-Saharan Africa. Therefore, this study aimed to assess the spatial distribution and associated factors of the co-occurrence of overweight/obesity and anemia among women of reproductive age...
2024: PloS One
https://read.qxmd.com/read/38635529/population-structure-and-connectivity-among-coastal-and-freshwater-kelp-gull-larus-dominicanus-populations-from-patagonia
#9
JOURNAL ARTICLE
Tatiana Kasinsky, Natalia Rosciano, Juliana A Vianna, Pablo Yorio, Leonardo Campagna
The genetic identification of evolutionary significant units and information on their connectivity can be used to design effective management and conservation plans for species of concern. Despite having high dispersal capacity, several seabird species show population structure due to both abiotic and biotic barriers to gene flow. The Kelp Gull is the most abundant species of gull in the southern hemisphere. In Argentina it reproduces in both marine and freshwater environments, with more than 100,000 breeding pairs following a metapopulation dynamic across 140 colonies in the Atlantic coast of Patagonia...
2024: PloS One
https://read.qxmd.com/read/38635464/tenoscopy-for-the-treatment-of-hand-intratendinous-ganglion-technique-description-and-case-report
#10
JOURNAL ARTICLE
Ricardo Kaempf de Oliveira, João Pedro Farina Brunelli, Fernando Corella Montoya, Pedro J Delgado
Synovial or ganglion cysts are the most common soft tissue tumors of the wrist and hand and can arise from joints or tendons. Intratendinous synovial cysts, in contrast, are rare and their pathogenesis is still a matter of debate. The treatment of synovial cysts of articular origin using arthroscopy is commonly used with good results. For cysts of tendon origin, that is, extra-articular, when located at the ankle, shoulder, knee, and wrist, endoscopic treatment has also been described in a procedure called tenoscopy...
April 18, 2024: Techniques in Hand & Upper Extremity Surgery
https://read.qxmd.com/read/38635460/jointless-maintains-inflorescence-meristem-identity-in-tomato
#11
JOURNAL ARTICLE
Samuel Huerga-Fernández, Nathalie Detry, Beata Orman-Ligeza, Frédéric Bouché, Marc Hanikenne, Claire Périlleux
JOINTLESS (J) was isolated in tomato (Solanum lycopersicum) from mutants lacking a flower pedicel abscission zone (AZ), and encodes a MADS-box protein of the SVP/AGL24 sub-family. The loss of J function also causes the return to leaf initiation in the inflorescences, indicating a pivotal role in inflorescence meristem identity. Here, we compared j mutants in different accessions that exhibit either an indeterminate shoot growth, producing regular sympodial segments, or a determinate shoot growth, due to the reduction of sympodial segments and causal mutation of the SELF PRUNING (SP) gene...
April 18, 2024: Plant & Cell Physiology
https://read.qxmd.com/read/38635398/protocol-for-automated-n-glycan-sequencing-using-mass-spectrometry-and-computer-assisted-intelligent-fragmentation
#12
JOURNAL ARTICLE
Chuncui Huang, Hui Wang, Jinyu Zhou, Yikang Huang, Yihui Ren, Keli Zhao, Yaojun Wang, Meijie Hou, Jingwei Zhang, Yaming Liu, Xinyue Ma, Jingyu Yan, Dongbo Bu, Wengang Chai, Shiwei Sun, Yan Li
Biological functions of glycans are intimately linked to fine details in branches and linkages, which make structural identification extremely challenging. Here, we present a protocol for automated N-glycan sequencing using multi-stage mass spectrometry (MSn ). We describe steps for release/purification and derivation of glycans and procedures for MSn scanning. We then detail "glycan intelligent precursor selection" to computationally guide MSn experiments. The protocol can be used for both discrete individual glycans and isomeric glycan mixtures...
April 16, 2024: STAR protocols
https://read.qxmd.com/read/38635397/protocol-for-identifying-properties-of-erbb-receptor-antagonists-using-the-barcoded-erbbprofiler-assay
#13
JOURNAL ARTICLE
Lukša Popović, Moritz J Rossner, Michael C Wehr
The ERBBprofiler assay measures compound effects on ERBB family receptors and key downstream signaling pathways that are implicated in cancer or other complex diseases. Here, we present a protocol for identifying properties of ERBB receptor antagonists using the barcoded ERBBprofiler assay. We describe steps for in-solution transfection, cell treatment, combined processing of samples, amplification and indexing of PCRs, sequencing, and data analysis. This approach allows for the simultaneous assessment of drug effects and cell-type-dependent effects...
April 16, 2024: STAR protocols
https://read.qxmd.com/read/38635396/protocol-for-evaluating-the-effect-of-potential-on-electrochemical-reactions-via-the-grand-canonical-fixed-potential-technique
#14
JOURNAL ARTICLE
Guoping Gao, Lin-Wang Wang
The grand canonical constant potential approach is a cornerstone for modeling the electrochemical reactions under work conditions. Here, we present a protocol for evaluating the effect of potential on electrochemical reactions using the grand canonical fixed-potential technique. We describe steps for installing PWmat software, preparing input files for the fixed-potential calculation, and simulating different electrochemical states under the same potential. We then detail procedures for analyzing the free energy evolution under the same potential...
April 16, 2024: STAR protocols
https://read.qxmd.com/read/38635395/simultaneous-quantitative-respirometry-and-fluorometric-assays-in-dissected-hippocampal-tissue-from-mice
#15
JOURNAL ARTICLE
Sreemathi Logan, Rojina Ranjit, Hadyn Rose, Anne Bredegaard, Carlos Manlio Díaz-García
Respirometry is a technique for studying mitochondrial function that has proven compatibility with ≥0.5 mg of brain tissue. Here, we present a protocol for assessing oxygen consumption and H2 O2 production rates in hippocampal tissue using the Oroboros O2k system. We describe steps for brain harvesting, tissue preparation, hippocampal microdissection, and respirometry assays. This approach has been valuable to study the metabolism of dentate granule cells of the hippocampus and could be applicable to other brain subregions...
April 16, 2024: STAR protocols
https://read.qxmd.com/read/38635394/a-vascularized-adipose-organoid-model-using-stromal-vascular-fraction-cells-from-ruminant-animals
#16
JOURNAL ARTICLE
Zongyou Jiang, Zhongzuo Huang, Yating Li, Xiaoxiao Yu, Yannan Ma, Jinyan Yu, Yifan Xiang, Yue Lv, Shaoqi Gao, Yicheng Luo, Bo Wang
In vitro cell culture serves as an efficient system for studying animal cell behavior in a controlled setting. Here, we present a 3D culture model for forming ruminant adipose organoids using stromal vascular fraction cells. We describe steps for forming cell spheroids and growing them on a Matrigel-coated surface. We then detail procedures for inducing organoids to undergo angiogenesis and adipogenesis followed by capillary sprouting. This protocol can be utilized to study the interaction between blood vessels and adipocytes...
April 17, 2024: STAR protocols
https://read.qxmd.com/read/38635393/protocol-to-analyze-3d-neurodegenerative-vacuoles-in-drosophila-melanogaster
#17
JOURNAL ARTICLE
Guangmei Liu, Shruthi Bandyadka, Kimberly McCall
Vacuole formation is a key hallmark of age-dependent neurodegeneration in the Drosophila brain. Here, we present a protocol to analyze 3D neurodegenerative vacuoles in the whole-mount Drosophila melanogaster brain. We describe steps for whole-brain dissection, staining, 3D imaging, and z-stack image processing using Fiji ImageJ. We then detail procedures for annotating and 3D-reconstructing neurodegenerative vacuoles with WEBKNOSSOS and Python, and performing statistical analysis in Python. This protocol enables measurement of parameters such as the number and volume of each vacuole...
April 17, 2024: STAR protocols
https://read.qxmd.com/read/38635365/stage-specific-demographic-effects-of-hydrologic-variation-in-a-stream-salamander
#18
JOURNAL ARTICLE
Madaline M Cochrane, Brett R Addis, Winsor H Lowe
AbstractWe lack a strong understanding of how organisms with complex life histories respond to climate variation. Many stream-associated species have multistage life histories that are likely to influence the demographic consequences of floods and droughts. However, tracking stage-specific demographic responses requires high-resolution, long-term data that are rare. We used 8 years of capture-recapture data for the headwater stream salamander Gyrinophilus porphyriticus to quantify the effects of flooding and drying magnitude on stage-specific vital rates and population growth...
May 2024: American Naturalist
https://read.qxmd.com/read/38635363/divergence-in-reproductive-behaviors-is-associated-with-the-evolutionary-loss-of-parental-care
#19
JOURNAL ARTICLE
Colby Behrens, Meghan F Maciejewski, Eric Arredondo, Anne C Dalziel, Laura K Weir, Alison M Bell
AbstractThe mechanisms underlying the divergence of reproductive strategies between closely related species are still poorly understood. Additionally, it is unclear which selective factors drive the evolution of reproductive behavioral variation and how these traits coevolve, particularly during early divergence. To address these questions, we quantified behavioral differences in a recently diverged pair of Nova Scotian three-spined stickleback ( Gasterosteus aculeatus ) populations, which vary in parental care, with one population displaying paternal care and the other lacking this...
May 2024: American Naturalist
https://read.qxmd.com/read/38635359/benefits-of-pair-bond-duration-on-reproduction-in-a-lifelong-monogamous-cooperative-passerine
#20
JOURNAL ARTICLE
Pietro B D'Amelio, Rita Covas, André C Ferreira, Rita Fortuna, Liliana R Silva, Franck Theron, Fanny Rybak, Claire Doutrelant
AbstractLong-term social and genetic monogamy is rare in animals except birds, but even in birds it is infrequent and poorly understood. We investigated possible advantages of monogamy in a colonial, facultative cooperatively breeding bird from an arid, unpredictable environment, the sociable weaver ( Philetairus socius ). We documented divorce and extrapair paternity of 703 pairs over 10 years and separated effects of pair duration from breeding experience by analyzing longitudinal and cross-sectional datasets...
May 2024: American Naturalist
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