keyword
https://read.qxmd.com/read/38651869/ploidy-inference-from-single-cell-data-application-to-human-and-mouse-cell-atlases
#21
JOURNAL ARTICLE
Fumihiko Takeuchi, Norihiro Kato
Ploidy is relevant to numerous biological phenomena, including development, metabolism, and tissue regeneration. Single-cell RNA-seq and other omics studies are revolutionizing our understanding of biology, yet they have largely overlooked ploidy. This is likely due to the additional assay step required for ploidy measurement. Here, we developed a statistical method to infer ploidy from single-cell ATAC-seq data, addressing this gap. When applied to data from human and mouse cell atlases, our method enabled systematic detection of polyploidy across diverse cell types...
April 23, 2024: Genetics
https://read.qxmd.com/read/38651830/how-structural-variants-shape-avian-phenotypes-lessons-from-model-systems
#22
REVIEW
María Recuerda, Leonardo Campagna
Despite receiving significant recent attention, the relevance of structural variation (SV) in driving phenotypic diversity remains understudied, although recent advances in long-read sequencing, bioinformatics and pangenomic approaches have enhanced SV detection. We review the role of SVs in shaping phenotypes in avian model systems, and identify some general patterns in SV type, length and their associated traits. We found that most of the avian SVs so far identified are short indels in chickens, which are frequently associated with changes in body weight and plumage colouration...
April 23, 2024: Molecular Ecology
https://read.qxmd.com/read/38651768/anisotropic-sensing-based-on-single-res-2-flake-for-vocs-discrimination
#23
JOURNAL ARTICLE
Yuan Xie, Zhe Zhang, Fanying Meng, Huo Shida, Xiaodong Hu, Pingjuan Niu, Enxiu Wu
Selective and sensitive detection of volatile organic compounds (VOCs) holds paramount importance in real-world applications. This study proposes an innovative approach utilizing a single ReS2 field-effect transistor (FET) characterized by distinct in-plane anisotropy, specifically tailored for VOC recognition. The unique responses of ReS2, endowed with robust in-plane anisotropic properties, demonstrate significant difference along the a-axis and b-axis directions when exposed to four kinds of VOCs: acetone, methanol, ethanol, and IPA...
April 23, 2024: Nanotechnology
https://read.qxmd.com/read/38651645/performance-of-a-handheld-point-of-care-ultrasonography-to-assess-iud-position-compared-to-conventional-transvaginal-ultrasonography
#24
JOURNAL ARTICLE
K G Araujo, A Yoshida, C R T Juliato, L O Sarian, S Derchain
OBJECTIVE: To compare the performance of the abdominal handheld point-of-care ultrasonography (POCUS) Butterfly-iQ to gold standard transvaginal ultrasonography (US) in identifying the position of intrauterine devices (IUDs) in the hands of a medical doctor specialised in ultrasonography. METHODS: In this diagnostic accuracy study, a single operator conducted abdominal POCUS followed by conventional transvaginal US. Seventy patients utilising copper or hormonal IUDs were assessed between June 2021 and October 2022...
April 2024: European Journal of Contraception & Reproductive Health Care
https://read.qxmd.com/read/38651451/monitoring-humoral-response-following-bnt162b2-mrna-vaccination-against-sars-cov-2-in-hematopoietic-stem-cell-transplantation-patients-a-single-center-prospective-study-along-with-a-brief-review-of-current-literature
#25
JOURNAL ARTICLE
John V Asimakopoulos, Eleni Lalou, George Seferlis, Maria Malliarou, Eliana Konstantinou, Ioannis Drandakis, Ioannis Vasilopoulos, Angeliki N Georgopoulou, Anastasia Kopsaftopoulou, Alexandros Machairas, Alexia Piperidou, Anestis Karapaschalidis, Maria-Ekaterini Lefaki, Dimitrios Galopoulos, Maria-Panagiota Arapaki, Panagiota Petsa, Ekaterini Benekou, Marina P Siakantaris, Athanasios G Papavassiliou, Panagiotis Tsaftaridis, Panayiotis Panayiotidis, Theodoros P Vassilakopoulos, Angeliki Papapanagiotou, Maria K Angelopoulou
Data on antibody response (AR) after vaccination against SARS-CoV2 in hematopoietic stem-cell transplantation setting (HSCT) were initially scarce, mainly due to the exclusion of such patients from approval studies. Shortly after the worldwide application of vaccination against SARS-CoV-2 in vulnerable populations such as patients with hematologic malignancies, limited single-center trials, including HSCT patients, were published. However, there was a great heterogeneity between them regarding the type of underlying malignancy, co-current treatment, type of vaccine, method of AR measurement, and time point of AR measurement...
April 16, 2024: Hematology Reports
https://read.qxmd.com/read/38651173/aerobic-anoxygenic-phototrophic-bacteria-in-the-marine-environments-revealed-by-raman-fluorescence-guided-single-cell-sorting-and-targeted-metagenomics
#26
JOURNAL ARTICLE
Lin Xu, Xiao-Lan Yue, Hong-Zhe Li, Shu-Ling Jian, Wen-Sheng Shu, Li Cui, Xue-Wei Xu
Aerobic anoxygenic phototrophic bacteria (AAPB) contribute profoundly to the global carbon cycle. However, most AAPB in marine environments are uncultured and at low abundance, hampering the recognition of their functions and molecular mechanisms. In this study, we developed a new culture-independent method to identify and sort AAPB using single-cell Raman/fluorescence spectroscopy. Characteristic Raman and fluorescent bands specific to bacteriochlorophyll a (Bchl a ) in AAPB were determined by comparing multiple known AAPB with non-AAPB isolates...
April 23, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38651166/noncontiguous-operon-atlas-for-the-staphylococcus-aureus-genome
#27
JOURNAL ARTICLE
Pablo Iturbe, Alvaro San Martín, Hiroshi Hamamoto, Marina Marcet-Houben, Toni Galbaldón, Cristina Solano, Iñigo Lasa
Bacteria synchronize the expression of genes with related functions by organizing genes into operons so that they are cotranscribed together in a single polycistronic messenger RNA. However, some cellular processes may benefit if the simultaneous production of the operon proteins coincides with the inhibition of the expression of an antagonist gene. To coordinate such situations, bacteria have evolved noncontiguous operons (NcOs), a subtype of operons that contain one or more genes that are transcribed in the opposite direction to the other operon genes...
2024: Microlife
https://read.qxmd.com/read/38650934/genetic-causal-relationship-between-immune-diseases-and-migraine-a-mendelian-randomization-study
#28
JOURNAL ARTICLE
Guanglu Li, Shaojie Duan, Tao Zheng, Tiantian Zhu, Baoquan Qu, Lei Liu, Zunjing Liu
BACKGROUND: Migraine has an increased prevalence in several immune disorders, but genetic cause-effect relationships remain unclear. Mendelian randomization (MR) was used in this study to explore whether immune diseases are causally associated with migraine and its subtypes. METHODS: We conducted a two-sample bidirectional multivariate Mendelian randomization study. Single-nucleotide polymorphisms (SNP) for six immune diseases, including rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), type 1 diabetes mellitus (T1D), allergic rhinitis (AR), asthma and psoriasis, were used as genetic instrumental variables...
2024: Frontiers in Immunology
https://read.qxmd.com/read/38650881/rapid-identification-of-lactic-acid-bacteria-at-species-subspecies-level-via-ensemble-learning-of-ramanomes
#29
JOURNAL ARTICLE
Yan Ren, Yang Zheng, Xiaojing Wang, Shuang Qu, Lijun Sun, Chenyong Song, Jia Ding, Yuetong Ji, Guoze Wang, Pengfei Zhu, Likun Cheng
Rapid and accurate identification of lactic acid bacteria (LAB) species would greatly improve the screening rate for functional LAB. Although many conventional and molecular methods have proven efficient and reliable, LAB identification using these methods has generally been slow and tedious. Single-cell Raman spectroscopy (SCRS) provides the phenotypic profile of a single cell and can be performed by Raman spectroscopy (which directly detects vibrations of chemical bonds through inelastic scattering by a laser light) using an individual live cell...
2024: Frontiers in Microbiology
https://read.qxmd.com/read/38650877/comprehensive-whole-genome-analysis-of-staphylococcus-aureus-isolates-from-dairy-cows-with-subclinical-mastitis
#30
JOURNAL ARTICLE
Ntelekwane George Khasapane, Jane Nkhebenyane, Zamantungwa Mnisi, Stanford Kwenda, Oriel Thekisoe
Staphylococcus species are the primary cause of mastitis in dairy cows across the world. Staphylococcus aureus has recently become a pathogen that is zoonotic and multidrug resistant. This study aimed to sequence whole genomes of 38 S. aureus isolates from 55 subclinical mastitis dairy cows of 7 small-scale farmers in the Free State Province, South Africa and document and their antimicrobial and virulence genes. The 38 isolates were grouped by the in silico multi-locus sequencing types (MLST) into seven sequence types (STs), that is (ST 97, 352, 152, 243) and three new STs (ST8495, ST8500, and ST8501)...
2024: Frontiers in Microbiology
https://read.qxmd.com/read/38650695/feature-importance-analysis-and-machine-learning-for-alzheimer-s-disease-early-detection-feature-fusion-of-the-hippocampus-entorhinal-cortex-and-standardized-uptake-value-ratio
#31
JOURNAL ARTICLE
Aya Hassouneh, Bradley Bazuin, Alessander Danna-Dos-Santos, Ilgin Acar, Ikhlas Abdel-Qader
INTRODUCTION: Alzheimer's disease (AD) is a progressive neurological disorder characterized by mild memory loss and ranks as a leading cause of mortality in the USA, accounting for approximately 120,000 deaths per year. It is also the primary form of dementia. Early detection is critical for timely intervention as the neurodegenerative process often starts 15-20 years before cognitive symptoms manifest. This study focuses on determining feature importance in AD classification using fused texture features from 3D magnetic resonance imaging hippocampal and entorhinal cortex and standardized uptake value ratio (SUVR) derived from positron emission tomography (PET) images...
2024: Digital Biomarkers
https://read.qxmd.com/read/38650655/effects-of-tcte1-knockout-on-energy-chain-transportation-and-spermatogenesis-implications-for-male-infertility
#32
JOURNAL ARTICLE
Marta Olszewska, Agnieszka Malcher, Tomasz Stokowy, Nijole Pollock, Andrea J Berman, Sylwia Budkiewicz, Marzena Kamieniczna, Hanna Jackowiak, Joanna Suszynska-Zajczyk, Piotr Jedrzejczak, Alexander N Yatsenko, Maciej Kurpisz
STUDY QUESTION: Is the Tcte1 mutation causative for male infertility? SUMMARY ANSWER: Our collected data underline the complex and devastating effect of the single-gene mutation on the testicular molecular network, leading to male reproductive failure. WHAT IS KNOWN ALREADY: Recent data have revealed mutations in genes related to axonemal dynein arms as causative for morphology and motility abnormalities in spermatozoa of infertile males, including dysplasia of fibrous sheath (DFS) and multiple morphological abnormalities in the sperm flagella (MMAF)...
2024: Human Reproduction Open
https://read.qxmd.com/read/38650621/esf-yolo-an-accurate-and-universal-object-detector-based-on-neural-networks
#33
JOURNAL ARTICLE
Wenguang Tao, Xiaotian Wang, Tian Yan, Zhengzhuo Liu, Shizheng Wan
As an excellent single-stage object detector based on neural networks, YOLOv5 has found extensive applications in the industrial domain; however, it still exhibits certain design limitations. To address these issues, this paper proposes Efficient Scale Fusion YOLO (ESF-YOLO). Firstly, the Multi-Sampling Conv Module (MSCM) is designed, which enhances the backbone network's learning capability for low-level features through multi-scale receptive fields and cross-scale feature fusion. Secondly, to tackle occlusion issues, a new Block-wise Channel Attention Module (BCAM) is designed, assigning greater weights to channels corresponding to critical information...
2024: Frontiers in Neuroscience
https://read.qxmd.com/read/38650443/in-vivo-assessment-of-bladder-cancer-with-diffuse-reflectance-and-fluorescence-spectroscopy-a-comparative-study
#34
JOURNAL ARTICLE
Nadezhda V Zlobina, Gleb S Budylin, Polina S Tseregorodtseva, Viktoria A Andreeva, Nikolay I Sorokin, David M Kamalov, Andrey A Strigunov, Artashes G Armaganov, Armais A Kamalov, Evgeny A Shirshin
OBJECTIVES: The aim of this work is to assess the performance of multimodal spectroscopic approach combined with single core optical fiber for detection of bladder cancer during surgery in vivo. METHODS: Multimodal approach combines diffuse reflectance spectroscopy (DRS), fluorescence spectroscopy in the visible (405 nm excitation) and near-infrared (NIR) (690 nm excitation) ranges, and high-wavenumber Raman spectroscopy. All four spectroscopic methods were combined in a single setup...
April 22, 2024: Lasers in Surgery and Medicine
https://read.qxmd.com/read/38650401/-prognosis-of-ureteral-dilatation-during-procedures-using-a-ureteral-access-sheath-in-patients-with-urolithiasis
#35
JOURNAL ARTICLE
V Protoshchak V, N Orlov D, V Paronnikov M, G Karpushchenko E
AIM: To improve the results of treatment of patients with urolithiasis who underwent endoscopic interventions using a ureteral access sheath (UAS) by developing a predictive model of ureteral dilatation without pre-stenting. MATERIALS AND METHODS: A total of 180 patients with kidney stones up to 20 mm were included in the study. They were divided into two groups: in the group 1 (n=79) UAS of 12/14 Ch was used, while in group II (n=101) UAS of 10/12 Ch was inserted...
March 2024: Urologii︠a︡
https://read.qxmd.com/read/38650387/screening-of-single-nucleotide-polymorphism-in-matrix-metalloproteinase-2-mmp2-and-tetraspanin-cd63-genes-in-chlamydia-trachomatis-infected-tubal-ectopic-pregnancy-patients
#36
JOURNAL ARTICLE
Shipra Pant, Tanu Bhati, Astha Dimri, Renu Arora, Fouzia Siraj, Sangita Rastogi
OBJECTIVE: Tubal ectopic pregnancy (EP) is a leading cause of maternal morbidity and mortality. Studies have suggested that infection-induced inflammatory responses are major risk factors for EP. The aim of the present study was to find an association between MMP2 and CD63 gene variants and risk of EP during Chlamydia trachomatis infection in an Indian population. METHODS: Fallopian tube samples of 120 EP and 120 tubal ligation women were collected. C. trachomatis was detected by PCR...
April 22, 2024: International Journal of Gynaecology and Obstetrics
https://read.qxmd.com/read/38650351/fully-automated-planning-for-anatomical-fetal-brain-mri-on-0-55t
#37
JOURNAL ARTICLE
Sara Neves Silva, Sarah McElroy, Jordina Aviles Verdera, Kathleen Colford, Kamilah St Clair, Raphael Tomi-Tricot, Alena Uus, Valéry Ozenne, Megan Hall, Lisa Story, Kuberan Pushparajah, Mary A Rutherford, Joseph V Hajnal, Jana Hutter
PURPOSE: Widening the availability of fetal MRI with fully automatic real-time planning of radiological brain planes on 0.55T MRI. METHODS: Deep learning-based detection of key brain landmarks on a whole-uterus echo planar imaging scan enables the subsequent fully automatic planning of the radiological single-shot Turbo Spin Echo acquisitions. The landmark detection pipeline was trained on over 120 datasets from varying field strength, echo times, and resolutions and quantitatively evaluated...
April 22, 2024: Magnetic Resonance in Medicine
https://read.qxmd.com/read/38650348/multielement-detection-of-nonmetals-by-barium-based-post-icp-chemical-ionization-coupled-to-orbitrap-ms
#38
JOURNAL ARTICLE
Grace Hahm, Frenio A Redeker, Kaveh Jorabchi
Prevalence of F, Cl, S, P, Br, and I in pharmaceuticals and environmental contaminants has promoted standard-free quantitation using analyte-independent heteroatom responses in inductively coupled plasma (ICP)-MS. However, in-plasma ionization challenges and element-dependent isobaric interference removal methods have hampered the multielement nonmetal detection in ICP-MS. Here, we examine an alternative approach to enhance multielement detection capabilities. Analytes are introduced into an ICP leading to post-plasma formation of HF, HCl, H3 PO3 , H2 SO4 , HBr, and HI, which are then chemically ionized to BaF+ , BaCl+ , BaH2 PO3 + , BaHSO4 + , BaBr+ , and BaI+ via reactions with barium-containing ions supplied by a nanospray...
April 22, 2024: Journal of the American Society for Mass Spectrometry
https://read.qxmd.com/read/38650033/mutations-in-the-nup93-nup107-and-nup160-genes-cause-steroid-resistant-nephrotic-syndrome-in-chinese-children
#39
JOURNAL ARTICLE
Yanxinli Han, Hongyu Sha, Yuan Yang, Zhuowei Yu, Lanqi Zhou, Yi Wang, Fengjie Yang, Liru Qiu, Yu Zhang, Jianhua Zhou
BACKGROUND: The variants of nucleoporins are extremely rare in hereditary steroid-resistant nephrotic syndrome (SRNS). Most of the patients carrying such variants progress to end stage kidney disease (ESKD) in their childhood. More clinical and genetic data from these patients are needed to characterize their genotype-phenotype relationships and elucidate the role of nucleoporins in SRNS. METHODS: Four patients of SRNS carrying biallelic variants in the NUP93, NUP107 and NUP160 genes were presented...
April 22, 2024: Italian Journal of Pediatrics
https://read.qxmd.com/read/38650030/the-translocator-protein-18kda-ligand-etifoxine-in-the-treatment-of-depressive-disorders-a-double-blind-randomized-placebo-controlled-proof-of-concept-study
#40
JOURNAL ARTICLE
Lisa-Marie Brunner, Marco Riebel, Simon Wein, Michael Koller, Florian Zeman, Gunnar Huppertz, Tanja Emmer, Yvonne Eberhardt, Jens Schwarzbach, Rainer Rupprecht, Caroline Nothdurfter
BACKGROUND: Recent developments suggest that neurosteroids may achieve rapid antidepressant effects. As such, neurosteroidogenesis mediated by the translocator protein 18 kDa (TSPO) might constitute a promising option for the treatment of depression. Therefore, the current clinical trial aims to get the first evidence of whether TPSO ligands promote rapid antidepressant effects. Furthermore, we study which mechanisms of action, e.g., modulation of distinct neuronal networks, neurosteroidogenesis, endocrinological mechanisms, TSPO expression or microbiome composition, contribute to their putative antidepressant effects...
April 22, 2024: Trials
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