keyword
https://read.qxmd.com/read/38618180/transient-expression-assay-and-microscopic-observation-in-kumquat-fruit
#21
JOURNAL ARTICLE
Jinli Gong, Xuepeng Sun
Citrus fruits encompass a diverse family, including oranges, mandarins, grapefruits, limes, kumquats, lemons, and others. In citrus, Agrobacterium tumefaciens -mediated genetic transformation of Hongkong kumquat ( Fortunella hindsii Swingle) has been widely employed for gene function analysis. However, the perennial nature of woody plants results in the generation of transgenic fruits taking several years. Here, we show the procedures of Agrobacterium -mediated transient transformation and live-cell imaging in kumquat ( F...
April 5, 2024: Bio-protocol
https://read.qxmd.com/read/38618179/agrobacterium-mediated-transient-gene-expression-optimized-for-the-bioenergy-crop-camelina-sativa
#22
JOURNAL ARTICLE
Pawan Kumar, Zeeshan Z Banday, John L Riley, Jean T Greenberg
Camelina sativa , a Brassicaceae family crop, is used for fodder, human food, and biofuels. Its relatively high resistance to abiotic and biotic stresses, as well as being a climate-resilient oilseed crop, has contributed to its popularity. Camelina's seed yield and oil contents have been improved using various technologies like RNAi and CRISPR/Cas9 genome editing. A stable transformation system for protein localization and other cell autonomous investigations, on the other hand, is tedious and time consuming...
April 5, 2024: Bio-protocol
https://read.qxmd.com/read/38618079/factors-associated-with-transient-bradycardia-during-local-anesthesia-administration-to-the-oral-cavity-under-intravenous-sedation-a-retrospective-cohort-study
#23
JOURNAL ARTICLE
Ryo Wakita, Yukiko BaBa, Haruhisa Fukayama, Shigeru Maeda
BACKGROUND/PURPOSE: The possibility of triggering the trigeminocardiac reflex (TCR) during oral surgery is considerably lower than that during other surgeries. A reduced heart rate (HR) of ≥20% from baseline is usually considered a diagnostical criterion for the TCR. Our automated anesthesia charting system often revealed cases of slight transient HR decrease during sedation. We aimed to explore its incidence and associated factors during local anesthesia administration under intravenous sedation...
April 2024: Journal of Dental Sciences
https://read.qxmd.com/read/38617992/an-overview-of-the-effects-of-tenapanor-on-visceral-hypersensitivity-in-the-treatment-of-irritable-bowel-syndrome-with-constipation
#24
REVIEW
Prashant Singh, Gregory S Sayuk, David P Rosenbaum, Susan Edelstein, Kenji Kozuka, Lin Chang
BACKGROUND: Patients with irritable bowel syndrome with constipation (IBS-C) experience persistent abdominal pain, a common symptom leading to greater healthcare utilization and reports of treatment non-response. Clinically significant improvements in abdominal pain were observed in clinical trials of tenapanor, a first-in-class inhibitor of sodium/hydrogen exchanger isoform 3 (NHE3), for the treatment of IBS-C in adults. AIM: This narrative review reports the current knowledge about visceral hypersensitivity as a mechanism for abdominal pain in patients with IBS-C and explores the published evidence for hypothesized mechanisms by which tenapanor may reduce visceral hypersensitivity leading to the observed clinical response of decreased abdominal pain...
2024: Clinical and Experimental Gastroenterology
https://read.qxmd.com/read/38617747/identification-and-characterization-of-two-p450-enzymes-from-citrus-sinensis-involved-in-tmtt-and-dmnt-biosyntheses-and-asian-citrus-psyllid-defense
#25
JOURNAL ARTICLE
Xueli Sun, Chunhua Hu, Ganjun Yi, Xinxin Zhang
The homoterpenes (3 E )-4,8-dimethyl-1,3,7-nonatriene (DMNT) and ( E , E )-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT) are the major herbivore-induced plant volatiles that help in defense directly by acting as repellants and indirectly by recruiting insects' natural enemies. In this study, DMNT and TMTT were confirmed to be emitted from citrus ( Citrus sinensis ) leaves infested with Asian citrus psyllid ( Diaphorina citri Kuwayama; ACP), and two cytochrome P450 (CYP) genes ( CsCYP82L1 and CsCYP82L2 ) were newly identified and characterized...
April 2024: Horticulture Research
https://read.qxmd.com/read/38617726/transient-activation-of-retinopathy-of-prematurity-secondary-to-erythrocyte-suspension-transfusion
#26
Alparslan Şahin
Retinopathy of prematurity (ROP) is a serious retinal vascular disorder that needs prompt diagnosis, and treatment to prevent undesired visual outcomes. Due to its shorter period of disease progression, it is important to be hasty in treating ROP. Erythrocyte suspension (ES) aggravates the progression of ROP. However, this progression may be transient as in the present case reports. This case report aimed to present two cases that developed type 1 ROP after erythrocyte suspension transfusion. Clinical findings of the patients were resolved within a few days without any intervention...
2024: Romanian Journal of Ophthalmology
https://read.qxmd.com/read/38617369/cryo-em-structure-of-aav2-rep68-bound-to-integration-site-aavs1-insights-into-the-mechanism-of-dna-melting
#27
R Jaiswal, V Santosh, B Braud, A Washington, Carlos R Escalante
The Rep68 protein from Adeno-Associated Virus (AAV) is a multifunctional SF3 helicase that performs most of the DNA transactions required for the viral life cycle. During AAV DNA replication, Rep68 assembles at the origin and catalyzes the DNA melting and nicking reactions during the hairpin rolling replication process to complete the second-strand synthesis of the AAV genome. Here, we report the Cryo-EM structures of Rep68 bound to double-stranded DNA (dsDNA) containing the sequence of the AAVS1 integration site in different nucleotide-bound states...
April 2, 2024: bioRxiv
https://read.qxmd.com/read/38617297/airway-injury-induces-alveolar-epithelial-and-mesenchymal-responses-mediated-by-macrophages
#28
Irene G Wong, Jillian Stark, VanNashlee Ya, Aaron L Moye, Alan Baez Vazquez, Susanna M Dang, Andrea Shehaj, Maral J Rouhani, Roderick Bronson, Sam M Janes, Samuel P Rowbotham, Margherita Paschini, Ruth A Franklin, Carla F Kim
UNLABELLED: Acute injury in the airways or the lung activates local progenitors and stimulates changes in cell-cell interactions to restore homeostasis, but it is not appreciated how more distant niches are impacted. We utilized mouse models of airway-specific epithelial injury to examine secondary tissue-wide alveolar, immune, and mesenchymal responses. Single-cell transcriptomics and in vivo validation revealed transient, tissue-wide proliferation of alveolar type 2 (AT2) progenitor cells after club cell-specific ablation...
April 3, 2024: bioRxiv
https://read.qxmd.com/read/38617263/mechanisms-underlying-trpv4-mediated-regulation-of-mir-146a-expression
#29
Bidisha Dutta, Manisha Mahanty, Lakshmyya Kesavalu, Shaik O Rahaman
Persistent inflammation is a major contributor in the development of various inflammatory diseases like atherosclerosis. Our study investigates how transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel, interacts with microRNA-146a (miR-146a), within the context of inflammation and atherosclerosis. Micro-RNAs play a critical role in controlling gene expression, and miR-146a is notable for its anti-inflammatory actions. TRPV4 is activated by diverse soluble and mechanical stimuli, and often associated with inflammatory responses in various diseases...
April 3, 2024: bioRxiv
https://read.qxmd.com/read/38617236/human-saposin-b-ligand-binding-and-presentation-to-%C3%AE-galactosidase-a
#30
Thomas K Sawyer, Efecan Aral, James V Staros, Cedric E Bobst, Scott C Garman
Sphingolipid activator protein B (saposin B; SapB) is an essential activator of globotriaosylceramide (Gb3) catabolism by α-galactosidase A. However, the manner by which SapB stimulates α-galactosidase A activity remains unknown. To uncover the molecular mechanism of SapB presenting Gb3 to α-galactosidase A, we subjected the fluorescent substrate globotriaosylceramide-nitrobenzoxidazole (Gb3-NBD) to a series of biochemical and structural assays involving SapB. First, we showed that SapB stably binds Gb3-NBD using a fluorescence equilibrium binding assay, isolates Gb3-NBD from micelles, and facilitates α-galactosidase A cleavage of Gb3-NBD in vitro ...
April 4, 2024: bioRxiv
https://read.qxmd.com/read/38616956/physiological-features-of-parvalbumin-expressing-gabaergic-interneurons-contributing-to-high-frequency-oscillations-in-the-cerebral-cortex
#31
REVIEW
Katarina D Milicevic, Brianna L Barbeau, Darko D Lovic, Aayushi A Patel, Violetta O Ivanova, Srdjan D Antic
Parvalbumin-expressing (PV+) inhibitory interneurons drive gamma oscillations (30-80 Hz), which underlie higher cognitive functions. In this review, we discuss two groups/aspects of fundamental properties of PV+ interneurons. In the first group (dubbed Before Axon ), we list properties representing optimal synaptic integration in PV+ interneurons designed to support fast oscillations. For example: [i] Information can neither enter nor leave the neocortex without the engagement of fast PV+ -mediated inhibition; [ii] Voltage responses in PV+ interneuron dendrites integrate linearly to reduce impact of the fluctuations in the afferent drive; and [iii] Reversed somatodendritic Rm gradient accelerates the time courses of synaptic potentials arriving at the soma...
2024: Current research in neurobiology
https://read.qxmd.com/read/38616813/unraveling-the-influence-of-topology-and-spatial-confinement-on-equilibrium-and-relaxation-properties-of-interlocked-ring-polymers
#32
JOURNAL ARTICLE
Michele Caraglio, Cristian Micheletti, Enzo Orlandini
We use Langevin dynamics simulations to study linked ring polymers in channel confinement. We address the in- and out-of-equilibrium behavior of the systems for varying degrees of confinement and increasing topological and geometrical complexity of the interlocking. The main findings are three. First, metric observables of different link topologies collapse onto the same master curve when plotted against the crossing number, revealing a universal response to confinement. Second, the relaxation process from initially stretched states is faster for more complex links...
April 9, 2024: Macromolecules
https://read.qxmd.com/read/38616658/a-path-to-persistence-after-egfr-inhibition
#33
JOURNAL ARTICLE
Purva H Rumde, Timothy F Burns
Residual cancer cells persist even after targeted therapies, serving as a reservoir for the subsequent acquisition of genetic alterations that lead to acquired drug resistance and tumor relapse. These initial drug-tolerant persisters (DTP) are phenotypically heterogenous with transient phenotypes attributed to epigenetic, metabolic, and cell-cycle changes. DTPs are responsible for the inevitable relapse seen in EGFR-mutant non-small cell lung cancer (NSCLC) despite high initial response to tyrosine kinase inhibitor (TKI) treatment...
April 15, 2024: Cancer Research
https://read.qxmd.com/read/38616528/the-growth-promotion-in-endophyte-symbiotic-plants-does-not-penalise-the-resistance-to-herbivores-and-bacterial-microbiota
#34
JOURNAL ARTICLE
Wei Zhang, Pedro E Gundel, Ruy Jáuregui, Stuart D Card, Wade J Mace, Richard D Johnson, Daniel A Bastías
A trade-off between growth and defence against biotic stresses is common in plants. Fungal endophytes of the genus Epichloë may relieve this trade-off in their host grasses since they can simultaneously induce plant growth and produce antiherbivore alkaloids that circumvent the need for host defence. The Epichloë ability to decouple the growth-defence trade-off was evaluated by subjecting ryegrass with and without Epichloë endophytes to an exogenous treatment with gibberellin (GA) followed by a challenge with Rhopalosiphum padi aphids...
April 14, 2024: Plant, Cell & Environment
https://read.qxmd.com/read/38616324/magnetic-resonance-guided-focused-ultrasound-mrgfus-thalamotomy-for-essential-tremor-lesion-location-and-clinical-outcomes
#35
JOURNAL ARTICLE
Alana Arcadi, Iciar Aviles-Olmos, Lain Hermes Gonzalez-Quarante, Arantza Gorospe, Adolfo Jiménez-Huete, Marta Macías de la Corte, Olga Parras, Antonio Martin-Bastida, Mario Riverol, Rafael Villino, Jorge Guridi, Maria C Rodríguez-Oroz
BACKGROUND: Factors predicting clinical outcomes after MR-guided focused ultrasound (MRgFUS)-thalamotomy in patients with essential tremor (ET) are not well known. OBJECTIVE: To examine the clinical outcomes and their relationship with patients' baseline demographic and clinical features and lesion characteristics at 6-month follow-up in ET patients. METHODS: A total of 127 patients were prospectively evaluated at 1 (n = 122), 3 (n = 102), and 6 months (n = 78) after MRgFUS-thalamotomy...
April 14, 2024: Movement Disorders: Official Journal of the Movement Disorder Society
https://read.qxmd.com/read/38615746/ammonium-chloride-induced-hypothermia-is-attenuated-by-transient-receptor-potential-channel-vanilloid-1-but-augmented-by-ankyrin-1-in-rodents
#36
JOURNAL ARTICLE
Zoltan Rumbus, Kata Fekete, Leonardo Kelava, Bibor Gardos, Krisztian Klonfar, Patrik Keringer, Erika Pinter, Eszter Pakai, Andras Garami
AIMS: Systemic administration of ammonium chloride (NH4 Cl), an acidifying agent used in human patients and experimental conditions, causes hypothermia in mice, however, the mechanisms of the thermoregulatory response to NH4 Cl and whether it develops in other species remained unknown. MAIN METHODS: We studied body temperature (Tb ) changes in rats and mice induced by intraperitoneal administration of NH4 Cl after blockade of transient receptor potential vanilloid-1 (TRPV1) or ankyrin-1 (TRPA1) channels...
April 12, 2024: Life Sciences
https://read.qxmd.com/read/38615716/safety-of-native-glucose-dependent-insulinotropic-polypeptide-in-humans
#37
JOURNAL ARTICLE
Mads M Helsted, Nina L Schaltz, Lærke S Gasbjerg, Mikkel B Christensen, Tina Vilsbøll, Filip K Knop
In this systematic review, we assessed the safety and possible safety events of native glucose-dependent insulinotropic polypeptide (GIP)(1-42) in human studies with administration of synthetic human GIP. We searched the PubMed database for all trials investigating synthetic human GIP(1-42) administration. A total of 67 studies were included. Study duration ranged from 30minutes to 6 days. In addition to healthy individuals, the studies included individuals with impaired glucose tolerance, type 2 diabetes, type 1 diabetes, chronic pancreatitis and secondary diabetes, latent autoimmune diabetes in adults, diabetes caused by a mutation in the hepatocyte nuclear factor 1-alpha gene, end-stage renal disease, chronic renal insufficiency, critical illness, hypoparathyroidism, or cystic fibrosis-related diabetes...
April 12, 2024: Peptides
https://read.qxmd.com/read/38615446/genome-wide-identification-of-the-cngc-gene-family-and-negative-regulation-of-drought-tolerance-by-hvcngc3-and-hvcngc16-in-transgenic-arabidopsis-thaliana
#38
JOURNAL ARTICLE
Li Zhang, Yongmei Cui, Likun An, Jie Li, Youhua Yao, Yixiong Bai, Xin Li, Xiaohua Yao, Kunlun Wu
Cyclic nucleotide-gated ion channels (CNGCs), as non-selective cation channels, play essential roles in plant growth and stress responses. However, they have not been identified in Qingke (Hordeum vulgare L.). Here, we performed a comprehensive genome-wide identification and function analysis of the HvCNGC gene family to determine its role in drought tolerance. Phylogenetic analysis showed that 27 HvCNGC genes were divided into four groups and unevenly located on seven chromosomes. Transcription analysis revealed that two closely related members of HvCNGC3 and HvCNGC16 were highly induced and the expression of both genes were distinctly different in two extremely drought-tolerant materials...
April 9, 2024: Plant Physiology and Biochemistry: PPB
https://read.qxmd.com/read/38615443/aluminium-tolerance-and-stomata-operation-towards-optimising-crop-performance-in-acid-soil
#39
REVIEW
Ce Guo, Sergey Shabala, Zhong-Hua Chen, Meixue Zhou, Chenchen Zhao
Stomatal operation is crucial for optimising plant water and gas exchange and represents a major trait conferring abiotic stress tolerance in plants. About 56% of agricultural land around the globe is classified as acidic, and Al toxicity is a major limiting factor affecting plant performance in such soils. While most of the research work in the field discusses the impact of major abiotic stresses such as drought or salinity on stomatal operation, the impact of toxic metals and, specifically aluminium (Al) on stomatal operation receives much less attention...
April 10, 2024: Plant Physiology and Biochemistry: PPB
https://read.qxmd.com/read/38615439/molecular-mechanism-of-abscisic-acid-signaling-response-factor-vcbzip55-to-promote-anthocyanin-biosynthesis-in-blueberry-vaccinium-corymbosum
#40
JOURNAL ARTICLE
Qi Tang, Xuan Wang, Shurui Ma, Shutian Fan, Fumei Chi, Yang Song
A high content of anthocyanin in blueberry (Vaccinium corymbosum) is an important indicator to evaluate fruit quality. Abscisic acid (ABA) can promote anthocyanin biosynthesis, but since the molecular mechanism is unclear, clarifying the mechanism will improve for blueberry breeding and cultivation regulation. VcbZIP55 regulating anthocyanin synthesis in blueberry were screened and mined using the published Isoform-sequencing, RNA-Seq and qRT-PCR at different fruit developmental stages. Blueberry genetic transformation and transgenic experiments confirmed that VcbZIP55 could promote anthocyanin biosynthesis in blueberry adventitious buds, tobacco leaves, blueberry leaves and blueberry fruit...
April 13, 2024: Plant Physiology and Biochemistry: PPB
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