LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 138

Search options

  1. Article ; Online: All who wander are not lost: the search for homology during homologous recombination.

    Hu, Jingyi / Crickard, J Brooks

    Biochemical Society transactions

    2024  Volume 52, Issue 1, Page(s) 367–377

    Abstract: Homologous recombination (HR) is a template-based DNA double-strand break repair pathway that functions to maintain genomic integrity. A vital component of the HR reaction is the identification of template DNA to be used during repair. This occurs ... ...

    Abstract Homologous recombination (HR) is a template-based DNA double-strand break repair pathway that functions to maintain genomic integrity. A vital component of the HR reaction is the identification of template DNA to be used during repair. This occurs through a mechanism known as the homology search. The homology search occurs in two steps: a collision step in which two pieces of DNA are forced to collide and a selection step that results in homologous pairing between matching DNA sequences. Selection of a homologous template is facilitated by recombinases of the RecA/Rad51 family of proteins in cooperation with helicases, translocases, and topoisomerases that determine the overall fidelity of the match. This menagerie of molecular machines acts to regulate critical intermediates during the homology search. These intermediates include recombinase filaments that probe for short stretches of homology and early strand invasion intermediates in the form of displacement loops (D-loops) that stabilize paired DNA. Here, we will discuss recent advances in understanding how these specific intermediates are regulated on the molecular level during the HR reaction. We will also discuss how the stability of these intermediates influences the ultimate outcomes of the HR reaction. Finally, we will discuss recent physiological models developed to explain how the homology search protects the genome.
    MeSH term(s) Homologous Recombination ; DNA/metabolism ; DNA Repair ; DNA Helicases/metabolism ; DNA Breaks, Double-Stranded ; Proteins/genetics
    Chemical Substances DNA (9007-49-2) ; DNA Helicases (EC 3.6.4.-) ; Proteins
    Language English
    Publishing date 2024-02-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 184237-7
    ISSN 1470-8752 ; 0300-5127
    ISSN (online) 1470-8752
    ISSN 0300-5127
    DOI 10.1042/BST20230705
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: An attention-based approach for assessing the effectiveness of emotion-evoking in immersive environment.

    Liu, Feng / Zhou, Yihao / Hu, Jingyi

    Heliyon

    2024  Volume 10, Issue 3, Page(s) e25017

    Abstract: Visual stimuli within an immersive virtual environment impact human perception and behavior in notably different ways compared to the real world. Previous studies have presented evidence indicating that individuals in various emotional states exhibit an ... ...

    Abstract Visual stimuli within an immersive virtual environment impact human perception and behavior in notably different ways compared to the real world. Previous studies have presented evidence indicating that individuals in various emotional states exhibit an unconscious attentional bias toward either positive or negative stimuli. However, whether these findings can be replicated within an immersive virtual environment remains uncertain. In this study, we devised an attention-based experiment to explore whether the correlation between participants' emotional states and the valence of visual stimuli influences their attentional bias. Participants (n=28) viewed 360-degree videos with varying valence levels (positive and negative) to evoke emotions. Subsequently, we utilized standard emotional human faces as stimuli to assess how the consistency in video valence and emotional faces affects reaction time (RT) in Go tasks and error rates in No-go tasks. We employed the Ex-Gaussian approach to analyze the RT data. The parameters-mu (
    Language English
    Publishing date 2024-01-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2024.e25017
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Chemical vapor deposition growth of graphene and other nanomaterials with 3D architectures towards electrocatalysis and secondary battery-related applications.

    Peng, You / Hu, Jingyi / Huan, Yahuan / Zhang, Yanfeng

    Nanoscale

    2024  Volume 16, Issue 16, Page(s) 7734–7751

    Abstract: Recently, two-dimensional (2D) layered materials, such as graphene and transition metal dichalcogenides (TMDCs), have garnered a lot of attention in energy storage/conversion-related fields due to their novel physical and chemical properties. ... ...

    Abstract Recently, two-dimensional (2D) layered materials, such as graphene and transition metal dichalcogenides (TMDCs), have garnered a lot of attention in energy storage/conversion-related fields due to their novel physical and chemical properties. Constructing flat graphene and TMDCs nanosheets into 3D architectures can significantly increase their exposed surface area and prevent the restacking of adjacent 2D layers, thus dramatically promoting their applications in various energy-related fields. Chemical Vapor Deposition (CVD) is a low-cost, facile, and scalable method, which has been widely employed to produce high-quality graphene and TMDCs nanosheets with 3D architectures. During the CVD process, the morphologies and properties of the 3D architectures of such 2D materials can be designed by selecting substrates with different compositions, stacking geometries, and micro-structures. In this review, we focus on the recent advances in the CVD synthesis of graphene, TMDCs, and their hybrids with 3D architectures on different 3D-structured substrates, as well as their applications in the electrocatalytic hydrogen evolution reaction (HER) and various secondary batteries. In addition, the challenges and future prospects for the CVD synthesis and energy-related applications of these unique layered materials will also be discussed.
    Language English
    Publishing date 2024-04-25
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr06143d
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Reduced interocular suppression after inverse patching in anisometropic amblyopia.

    Hu, Jingyi / Chen, Jing / Ku, Yixuan / Yu, Minbin

    Frontiers in neuroscience

    2023  Volume 17, Page(s) 1280436

    Abstract: Purpose: Recent investigations observed substantial enhancements in binocular balance, visual acuity, and stereovision among older children and adults with amblyopia by patching the amblyopic eye (i.e., inverse patching) for 2 h daily over 2 months. ... ...

    Abstract Purpose: Recent investigations observed substantial enhancements in binocular balance, visual acuity, and stereovision among older children and adults with amblyopia by patching the amblyopic eye (i.e., inverse patching) for 2 h daily over 2 months. Despite these promising findings, the precise neural mechanisms underlying inverse patching remain elusive. This study endeavors to delve deeper into the neural alterations induced by inverse patching, focusing on steady-state visual evoked potentials (SSVEPs). We specifically investigate the changes in SSVEPs following monocular deprivation of either the fellow eye or the amblyopic eye in older amblyopic children and adults.
    Method: Ten participants (17.60 ± 2.03 years old; mean ± SEM), clinically diagnosed with anisometropic amblyopia, were recruited for this study. Each participant underwent a 120 min patching session on their fellow eye on the first day, followed by a similar session on their amblyopic eye on the second day. Baseline steady-state visual evoked potentials (SSVEPs) measurements were collected each day prior to patching, with post-patching SSVEPs measurements obtained immediately after the patching session. The experimental design incorporated a binocular rivalry paradigm, utilizing SSVEPs measurements.
    Results: The results revealed that inverse patching induced a heightened influence on neural plasticity, manifesting in a reduction of interocular suppression from the fellow eye to the amblyopic eye. In contrast, patching the fellow eye demonstrated negligible effects on the visual cortex. Furthermore, alterations in interocular suppression subsequent to inverse patching exhibited a correlation with the visual acuity of the amblyopic eye.
    Conclusion: Inverse patching emerges as a promising therapeutic avenue for adolescents and adults grappling with severe anisometropic amblyopia that proves refractory to conventional interventions. This innovative approach exhibits the potential to induce more robust neural plasticity within the visual cortex, thereby modulating neural interactions more effectively than traditional amblyopia treatments.
    Language English
    Publishing date 2023-12-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2411902-7
    ISSN 1662-453X ; 1662-4548
    ISSN (online) 1662-453X
    ISSN 1662-4548
    DOI 10.3389/fnins.2023.1280436
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Association between antihypertensive drugs and hepatocellular carcinoma: A trans-ancestry and drug-target Mendelian randomization study.

    Wang, Zhenqian / Lu, Jiawen / Hu, Jingyi

    Liver international : official journal of the International Association for the Study of the Liver

    2023  Volume 43, Issue 6, Page(s) 1320–1331

    Abstract: Background and aims: Antihypertensive drugs were recently reported to have an oncogenic role in common cancer, however, whether these drugs would affect the risk of hepatocellular carcinoma (HCC) remains unclear.: Methods: A drug-target Mendelian ... ...

    Abstract Background and aims: Antihypertensive drugs were recently reported to have an oncogenic role in common cancer, however, whether these drugs would affect the risk of hepatocellular carcinoma (HCC) remains unclear.
    Methods: A drug-target Mendelian randomization method was adopted to examine the long-term effect of 12 antihypertensive drugs classes on the risk of HCC in Europeans and East Asians. To proxy antihypertensive drugs, we leveraged genetic variants located near or within drug target genes that were associated with systolic blood pressure (SBP). Genetically proxied drugs associated with reduced risk of coronary artery disease were included in primary analysis. Genetic summary statistics of SBP and HCC were derived from publicly available large-scale genome-wide association studies in Europeans and East Asians respectively. Expression quantitative trait loci (eQTLs) of drugs target genes were used to proxy drugs in a sensitivity analysis.
    Results: Genetically proxied thiazides and related diuretics were associated with decreased risk of HCC in both Europeans (OR [95% CI]: 0.79 [0.73, 0.86] per 1 mmHg reduction in SBP; p < 0.001) and East Asians (0.60 [0.45, 0.82]; p = 0.001). Genetically proxied beta-adrenoceptor blockers (BBs) were strongly associated with increased risk of HCC in Europeans (1.46 [1.12, 1.91]; p = 0.004). These findings were replicated in deCODE genetics study and remained consistent when using eQTLs to proxy antihypertensive drugs.
    Conclusions: Our findings suggested that thiazides diuretics may lower the risk of HCC in both Europeans and East Asians, while BBs may increase the risk of HCC specifically in Europeans. Further studies are warranted to explore the potential of repurposing or retargeting antihypertensive drugs for HCC prevention.
    MeSH term(s) Humans ; Antihypertensive Agents/therapeutic use ; Carcinoma, Hepatocellular/drug therapy ; Mendelian Randomization Analysis ; Genome-Wide Association Study ; Liver Neoplasms/drug therapy ; Diuretics ; Adrenergic beta-Antagonists ; Thiazides ; Polymorphism, Single Nucleotide
    Chemical Substances Antihypertensive Agents ; Diuretics ; Adrenergic beta-Antagonists ; Thiazides
    Language English
    Publishing date 2023-04-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2102783-3
    ISSN 1478-3231 ; 1478-3223
    ISSN (online) 1478-3231
    ISSN 1478-3223
    DOI 10.1111/liv.15566
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Mechanism of growth inhibition mediated by disorder of chlorophyll metabolism in rice (Oryza sativa) under the stress of three polycyclic aromatic hydrocarbons.

    Hu, Jingyi / Chen, Jie / Wang, Wei / Zhu, Lizhong

    Chemosphere

    2023  Volume 329, Page(s) 138554

    Abstract: Photosynthesis mediated by chlorophyll metabolism is the basis for plant growth, and also the important regulatory mechanism of carbon pool in cropland ecosystems. Soil organic pollutants induced growth inhibition in crop plants, herein, we conducted an ... ...

    Abstract Photosynthesis mediated by chlorophyll metabolism is the basis for plant growth, and also the important regulatory mechanism of carbon pool in cropland ecosystems. Soil organic pollutants induced growth inhibition in crop plants, herein, we conducted an in-depth investigation on the effects of three representative polycyclic aromatic hydrocarbons (PAHs), including phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene (BaP) on rice (Oryza sativa) growth and photosynthesis. PAHs were absorbed via root uptake and accumulated in leaves, causing the swelling of thylakoids and the increase of osmiophilic granules in chloroplasts. The actual quantum efficiency of PSII was significantly decreased under the stress of PHE, PYR, and BaP by 29.9%, 11.9%, and 24.1% respectively, indicating the inhibition in photon absorption and transfer, which was consistent with the decrease of chlorophyll a (22.3%-32.2% compared to the control) in rice leaves. Twenty-two encoding genes involved in chlorophyll metabolism were determined and the results indicated that the expression of chlorophyll synthetases was downregulated by over 50% whereas the degradation process was promoted. Consequently, the production of carbohydrates and the carbon fixation were inhibited, which revealed by the downregulation of intermediate metabolites in Calvin cycle and the declined carboxylation rate. The disturbed photosynthesis resulted in the decrease of the biomasses of both roots (21.0%-42.7%) and leaves (6.4%-22.1%) under the tested PAH stresses. The findings of this study implied that the photosynthetic inhibition was possibly attributed to the disorder of chlorophyll metabolism, thus providing novel insights into the mechanism of growth inhibition induced by organic pollutants and theoretical basis for the estimation of cropland carbon sequestration potential.
    MeSH term(s) Polycyclic Aromatic Hydrocarbons/metabolism ; Oryza/metabolism ; Chlorophyll A/metabolism ; Ecosystem ; Photosynthesis ; Environmental Pollutants/metabolism ; Chlorophyll/metabolism
    Chemical Substances Polycyclic Aromatic Hydrocarbons ; Chlorophyll A (YF5Q9EJC8Y) ; phenanthrene (448J8E5BST) ; pyrene (9E0T7WFW93) ; Environmental Pollutants ; Chlorophyll (1406-65-1)
    Language English
    Publishing date 2023-04-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2023.138554
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: The impact of carbon finance on energy consumption structure: evidence from China

    Geng, Limin / Hu, Jingyi / Shen, Wenxing

    Environ Sci Pollut Res. 2023 Mar., v. 30, no. 11 p.30107-30121

    2023  

    Abstract: As a financial innovation model to promote sustainable economic development, carbon finance promotes green and inclusive economic development by reshaping the financial system. As a big energy consumer, China has been committed to the green ... ...

    Abstract As a financial innovation model to promote sustainable economic development, carbon finance promotes green and inclusive economic development by reshaping the financial system. As a big energy consumer, China has been committed to the green transformation of energy structure, and carbon finance has been regarded as an important tool to support carbon emission reduction. This paper divides carbon finance from three levels, financial macro, environmental governance, and technological development, and selects 17 indexes to measure the development level of carbon finance in China. Time series regression model and the entropy weight method (EWM) are used to analyze the impact of carbon finance on China’s energy consumption structure. The empirical results show that carbon finance plays a positive role in promoting China’s energy consumption structure, and developing carbon finance is conducive to the use of clean energy and the optimization of energy consumption structure in China; carbon finance can further optimize China’s energy consumption structure by investing capital, resources, and technology in industries related to promoting clean energy consumption. Therefore, China should continue to develop carbon finance and promote the establishment of a unified national carbon trading market; at the same time, China should use the CCER trading mechanism to promote the development of renewable energy and enhance the endogenous driving force of energy transformation by promoting technological progress.
    Keywords capital ; carbon ; clean energy ; economic development ; energy conversion ; entropy ; environmental governance ; finance ; markets ; models ; regression analysis ; renewable energy sources ; time series analysis ; China
    Language English
    Dates of publication 2023-03
    Size p. 30107-30121.
    Publishing place Springer Berlin Heidelberg
    Document type Article ; Online
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-022-24303-y
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  8. Article ; Online: Mechanism of growth inhibition mediated by disorder of chlorophyll metabolism in rice (Oryza sativa) under the stress of three polycyclic aromatic hydrocarbons

    Hu, Jingyi / Chen, Jie / Wang, Wei / Zhu, Lizhong

    Chemosphere. 2023 July, v. 329 p.138554-

    2023  

    Abstract: Photosynthesis mediated by chlorophyll metabolism is the basis for plant growth, and also the important regulatory mechanism of carbon pool in cropland ecosystems. Soil organic pollutants induced growth inhibition in crop plants, herein, we conducted an ... ...

    Abstract Photosynthesis mediated by chlorophyll metabolism is the basis for plant growth, and also the important regulatory mechanism of carbon pool in cropland ecosystems. Soil organic pollutants induced growth inhibition in crop plants, herein, we conducted an in-depth investigation on the effects of three representative polycyclic aromatic hydrocarbons (PAHs), including phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene (BaP) on rice (Oryza sativa) growth and photosynthesis. PAHs were absorbed via root uptake and accumulated in leaves, causing the swelling of thylakoids and the increase of osmiophilic granules in chloroplasts. The actual quantum efficiency of PSII was significantly decreased under the stress of PHE, PYR, and BaP by 29.9%, 11.9%, and 24.1% respectively, indicating the inhibition in photon absorption and transfer, which was consistent with the decrease of chlorophyll a (22.3%–32.2% compared to the control) in rice leaves. Twenty-two encoding genes involved in chlorophyll metabolism were determined and the results indicated that the expression of chlorophyll synthetases was downregulated by over 50% whereas the degradation process was promoted. Consequently, the production of carbohydrates and the carbon fixation were inhibited, which revealed by the downregulation of intermediate metabolites in Calvin cycle and the declined carboxylation rate. The disturbed photosynthesis resulted in the decrease of the biomasses of both roots (21.0%–42.7%) and leaves (6.4%–22.1%) under the tested PAH stresses. The findings of this study implied that the photosynthetic inhibition was possibly attributed to the disorder of chlorophyll metabolism, thus providing novel insights into the mechanism of growth inhibition induced by organic pollutants and theoretical basis for the estimation of cropland carbon sequestration potential.
    Keywords Calvin cycle ; Oryza sativa ; absorption ; carbon dioxide fixation ; carbon sequestration ; carbon sinks ; carboxylation ; chlorophyll ; cropland ; growth retardation ; ligases ; metabolites ; phenanthrenes ; photons ; photosystem II ; plant growth ; rice ; soil ; thylakoids ; Polycyclic aromatic hydrocarbons ; Chlorophyll metabolism ; Photosynthesis
    Language English
    Dates of publication 2023-07
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 120089-6
    ISSN 1879-1298 ; 0045-6535 ; 0366-7111
    ISSN (online) 1879-1298
    ISSN 0045-6535 ; 0366-7111
    DOI 10.1016/j.chemosphere.2023.138554
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article: A systematic review and meta-analysis comparing the diagnostic capability of automated breast ultrasound and contrast-enhanced ultrasound in breast cancer.

    Zhang, Haoyu / Hu, Jingyi / Meng, Rong / Liu, Fangfang / Xu, Fan / Huang, Min

    Frontiers in oncology

    2024  Volume 13, Page(s) 1305545

    Abstract: Objective: To compare the diagnostic performance of automated breast ultrasound (ABUS) and contrast-enhanced ultrasound (CEUS) in breast cancer.: Methods: Published studies were collected by systematically searching the databases PubMed, Embase, ... ...

    Abstract Objective: To compare the diagnostic performance of automated breast ultrasound (ABUS) and contrast-enhanced ultrasound (CEUS) in breast cancer.
    Methods: Published studies were collected by systematically searching the databases PubMed, Embase, Cochrane Library and Web of Science. The sensitivities, specificities, likelihood ratios and diagnostic odds ratio (DOR) were confirmed. The symmetric receiver operator characteristic curve (SROC) was used to assess the threshold of ABUS and CEUS. Fagan's nomogram was drawn. Meta-regression and subgroup analyses were applied to search for sources of heterogeneity among the included studies.
    Results: A total of 16 studies were included, comprising 4115 participants. The combined sensitivity of ABUS was 0.88 [95% CI (0.73-0.95)], specificity was 0.93 [95% CI (0.82-0.97)], area under the SROC curve (AUC) was 0.96 [95% CI (0.94-0.96)] and DOR was 89. The combined sensitivity of CEUS was 0.88 [95% CI (0.84-0.91)], specificity was 0.76 [95% CI (0.66-0.84)], AUC was 0.89 [95% CI (0.86-0.92)] and DOR was 24. The Deeks' funnel plot showed no existing publication bias. The prospective design, partial verification bias and blinding contributed to the heterogeneity in specificity, while no sources contributed to the heterogeneity in sensitivity. The post-test probability of ABUS in BC was 75%, and the post-test probability of CEUS in breast cancer was 48%.
    Conclusion: Compared with CEUS, ABUS showed higher specificity and DOR for detecting breast cancer. ABUS is expected to further improve the accuracy of BC diagnosis.
    Language English
    Publishing date 2024-01-09
    Publishing country Switzerland
    Document type Systematic Review
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2023.1305545
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Clinical value of lymphocyte count in autoimmune diabetic nephropathy.

    Xiang, Zhongyuan / Liu, Wen'en / Fu, Sangya / Hu, Jingyi / Yang, Yanyi

    Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences

    2024  Volume 48, Issue 11, Page(s) 1639–1649

    Abstract: Objectives: In recent years, the prevalence of diabetic nephropathy (DN) has increased significantly. An increasing number of studies have shown that lymphocyte-associated inflammatory responses play a role in DN. This study aims to investigate the ... ...

    Title translation 淋巴细胞计数在自身免疫性糖尿病肾病中的临床价值(英文).
    Abstract Objectives: In recent years, the prevalence of diabetic nephropathy (DN) has increased significantly. An increasing number of studies have shown that lymphocyte-associated inflammatory responses play a role in DN. This study aims to investigate the relationship between lymphocytes and DN in patients with autoimmune diabetes.
    Methods: The clinical data of 226 patients with Type 1 diabetes (T1D) and 79 patients with latent autoimmune diabetes in adults (LADA) were retrospectively studied and stratified according to the urinary albumin to creatinine ratio (ACR). Risk factors associated with DN were analyzed using correlation analysis and logistic regression.
    Results: In T1D and LADA patients, systolic blood pressure (SBP), uric acid duration, and diabetes duration in patients with normoalbuminuria were lower or shorter than those in patients with macroalbuminuria (
    Conclusions: Lymphocyte counts in autoimmune diabetic patients are closely associated with DN, suggesting that lymphocyte-mediated inflammation may be involved in the pathogenesis of DN in autoimmune diabetic patients. This study provides a possible perspective for using lymphocytes as a potential biomarker for the early identification of individuals at risk for DN and potential therapeutic targets for DN.
    MeSH term(s) Adult ; Humans ; Diabetic Nephropathies ; Diabetes Mellitus, Type 1/complications ; Retrospective Studies ; Lymphocyte Count ; Risk Factors ; Albuminuria
    Language Chinese
    Publishing date 2024-03-01
    Publishing country China
    Document type Journal Article
    ZDB-ID 2168533-2
    ISSN 1672-7347
    ISSN 1672-7347
    DOI 10.11817/j.issn.1672-7347.2023.230110
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top