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result(s) for
"Lu, Xiaoyu"
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The Imperative to Narrate: Personal Storytelling and LGBT Norm Translation in China
2020
How do personal stories emerge and shape norm translation in human rights advocacy? This article explores the relationship between personal storytelling and human rights, through a political ethnography of the United Nations Development Programme (UNDP) regional LGBT project in China. Drawing on participant observations and interviews with norm translators, the actors who reframe and repackage normative scripts across local-global layers, this article traces how personal stories are used as evidence, a tool of mobilization, and means of localization in the case of emerging LGBT norm. The article argues that, first, instead of training and empowering the narrators, norm translators focus on the selection and organization of typical stories in order to highlight structural restraints in defined areas and justify normative changes. Second, instead of replacing or reframing the local norm, the selected personal stories maintain the centrality of individuals in human rights advocacy, while redefining and shifting the meaning of individuality and personhood to include local norms such as family roles. In contestation, norm translators supplement the stories based on data and lessons from other localities, which reinforce the public and the universalistic character of the human rights issues beyond the impression of being emotional, subjective, and individualistic voices.
Journal Article
Tiger Nut (Cyperus esculentus L.): Nutrition, Processing, Function and Applications
2022
The tiger nut is the tuber of Cyperus esculentus L., which is a high-quality wholesome crop that contains lipids, protein, starch, fiber, vitamins, minerals and bioactive factors. This article systematically reviewed the nutritional composition of tiger nuts; the processing methods for extracting oil, starch and other edible components; the physiochemical and functional characteristics; as well as their applications in food industry. Different extraction methods can affect functional and nutritional properties to a certain extent. At present, mechanical compression, alkaline methods and alkali extraction–acid precipitation are the most suitable methods for the production of its oil, starch and protein in the food industry, respectively. Based on traditional extraction methods, combination of innovative techniques aimed at yield and physiochemical characteristics is essential for the comprehensive utilization of nutrients. In addition, tiger nut has the radical scavenging ability, in vitro inhibition of lipid peroxidation, anti-inflammatory and anti-apoptotic effects and displays medical properties. It has been made to milk, snacks, beverages and gluten-free bread. Despite their ancient use for food and feed and the many years of intense research, tiger nuts and their components still deserve further exploitation on the functional properties, modifications and intensive processing to make them suitable for industrial production.
Journal Article
Integrating transcriptomic and metabolomic analysis of hormone pathways in Acer rubrum during developmental leaf senescence
by
Zhu, Chen
,
Yun, Xuan
,
Junlan, Gao
in
Abscisic acid
,
Acer - genetics
,
Acer - growth & development
2020
Background
To fully elucidate the roles and mechanisms of plant hormones in leaf senescence, we adopted an integrated analysis of both non-senescing and senescing leaves from red maple with transcriptome and metabolome data.
Results
Transcription and metabolite profiles were generated through a combination of deep sequencing, third-generation sequencing data analysis, and ultrahigh-performance liquid chromatograph Q extractive mass spectrometry (UHPLC-QE-MS), respectively. We investigated the accumulation of compounds and the expression of biosynthesis and signaling genes for eight hormones. The results revealed that ethylene and abscisic acid concentrations increased during the leaf senescence process, while the contents of cytokinin, auxin, jasmonic acid, and salicylic acid continued to decrease. Correlation tests between the hormone content and transcriptional changes were analyzed, and in six pathways, genes closely linked with leaf senescence were identified.
Conclusions
These results will enrich our understanding of the mechanisms of plant hormones that regulate leaf senescence in red maple, while establishing a foundation for the genetic modification of
Acer
in the future.
Journal Article
PLUS: Predicting cancer metastasis potential based on positive and unlabeled learning
2022
Metastatic cancer accounts for over 90% of all cancer deaths, and evaluations of metastasis potential are vital for minimizing the metastasis-associated mortality and achieving optimal clinical decision-making. Computational assessment of metastasis potential based on large-scale transcriptomic cancer data is challenging because metastasis events are not always clinically detectable. The under-diagnosis of metastasis events results in biased classification labels, and classification tools using biased labels may lead to inaccurate estimations of metastasis potential. This issue is further complicated by the unknown metastasis prevalence at the population level, the small number of confirmed metastasis cases, and the high dimensionality of the candidate molecular features. Our proposed algorithm, called
P
ositive and unlabeled
L
earning from
U
nbalanced cases and
S
parse structures (
PLUS
), is the first to use a positive and unlabeled learning framework to account for the under-detection of metastasis events in building a classifier. PLUS is specifically tailored for studying metastasis that deals with the unbalanced instance allocation as well as unknown metastasis prevalence, which are not considered by other methods. PLUS achieves superior performance on synthetic datasets compared with other state-of-the-art methods. Application of PLUS to The Cancer Genome Atlas Pan-Cancer gene expression data generated metastasis potential predictions that show good agreement with the clinical follow-up data, in addition to predictive genes that have been validated by independent single-cell RNA-sequencing datasets.
Journal Article
Comparative Ionomics and Metabolic Responses and Adaptive Strategies of Cotton to Salt and Alkali Stress
by
Guo, Jiaxin
,
Tao, Yifan
,
Guo, Huijuan
in
Abiotic stress
,
Accumulation
,
Agricultural production
2022
Soil salinization and alkalization severely inhibit agriculture. However, the response mechanisms of cotton to salt stress or alkali stress are unclear. Ionomics and metabolomics were used to investigate salt and alkali stresses in cotton roots and leaves. Compared with the control, salt-treated and alkali-treated cotton plants showed 51.8 and 53.0% decreases in biomass, respectively. Under salt stress, the concentration of N decreased in roots but increased in leaves, and the concentrations of P and K increased in roots but decreased in leaves. Salt stress inhibited Ca, B, N, and Fe uptake and Mg, K, P, S, and Cu transport, but promoted Mo, Mn, Zn, Mg, K, P, S, and Cu uptake and Mo, Mn, Zn, B, N, and Fe transport. Under alkali stress, the concentrations of N and P in roots and leaves decreased, while the concentrations of K in roots and leaves increased. Alkali stress inhibited P, Ca, S, N, Fe, and Zn uptake and N, P, Mg and B transport, but promoted K, Mn, Cu, Mo, Mg, and B uptake and K, Mn, Cu, Mo, Fe, and Zn transport. Under salt stress in the leaves, 93 metabolites increased, mainly organic acids, amino acids, and sugars, increased in abundance, while 6 decreased. In the roots, 72 metabolites increased, mainly amino acids, organic acids, and sugars, while 18 decreased. Under alkali stress, in the leaves, 96 metabolites increased, including organic acids, amino acids, and sugars, 83 metabolites decreased, including organic acids, amino acids, and sugars; In the roots, 108 metabolites increased, including organic acids, amino acids, and sugars. 83 metabolites decreased, including organic acids and amino acids. Under salt stress, cotton adapts to osmotic stress through the accumulation of organic acids, amino acids and sugars, while under alkali stress, osmoregulation was achieved
via
inorganic ion accumulation. Under salt stress, significant metabolic pathways in the leaves and roots were associated with amino acid and organic acid metabolism, sugar metabolism was mainly used as a source of energy, while under alkali stress, the pathways in the leaves were related to amino acid and linoleic acid metabolism, β-Oxidation, TCA cycle, and glycolysis were enhanced to provide the energy needed for life activities. Enhancing organic acid accumulation and metabolism in the roots is the key response mechanism of cotton to alkalinity.
Journal Article
Flavonoid-rich foods (FRF): A promising nutraceutical approach against lifespan-shortening diseases
2020
It is well documented that life expectancy in developed countries at birth is going to surpass the 20
century. However, regrettably, a potential decline in life expectancy has been proposed for these nations in the 21st century due to a rapid upsurge in the prevalence of fatal degenerative diseases like cardiovascular diseases (CVD), cancer and diabetes. Collectively, these three diseases accounted for 65% of all deaths in urbanized societies and were considered as a dynamic issue for shortening the genetically determined lifespan through increased mortalities, morbidities, disabilities, immense sufferings, and premature aging. These fatal degenerative diseases and premature aging are closely associated with oxidative stress produced by the free radicals in the body. In epidemiologic studies, flavonoid-rich foods (FRF) like fruits, vegetables, and beverages have been associated as protective agents against these diseases. These also have been observed for their geroprotective effects and help in preventing premature aging and deterioration of brain function, which is related to Alzheimer's disease and dementia. In this review, we presented a comprehensive overview of the FRF for their potential role against lifespan-shortening complications, i.e., CVD, cancer, and diabetes. We also have drawn the future perspective and dietary guidelines to reduce the fatal disease burden in urban populations.
Journal Article
Widefield imaging of rapid pan-cortical voltage dynamics with an indicator evolved for one-photon microscopy
2023
Widefield imaging with genetically encoded voltage indicators (GEVIs) is a promising approach for understanding the role of large cortical networks in the neural coding of behavior. However, the limited performance of current GEVIs restricts their deployment for single-trial imaging of rapid neuronal voltage dynamics. Here, we developed a high-throughput platform to screen for GEVIs that combine fast kinetics with high brightness, sensitivity, and photostability under widefield one-photon illumination. Rounds of directed evolution produced JEDI-1P, a green-emitting fluorescent indicator with enhanced performance across all metrics. Next, we optimized a neonatal intracerebroventricular delivery method to achieve cost-effective and wide-spread JEDI-1P expression in mice. We also developed an approach to correct optical measurements from hemodynamic and motion artifacts effectively. Finally, we achieved stable brain-wide voltage imaging and successfully tracked gamma-frequency whisker and visual stimulations in awake mice in single trials, opening the door to investigating the role of high-frequency signals in brain computations.
Genetically encoded voltage indicators need fast and large signals to allow widefield imaging of rapid neuronal activity. Here, the authors develop the indicator JEDI-1P and demonstrate pan-cortical voltage imaging and gamma-frequency tracking in awake mice in single trials.
Journal Article
Transcriptome analysis based on a combination of sequencing platforms provides insights into leaf pigmentation in Acer rubrum
by
Fu, Songling
,
Ren, Jie
,
Tang, Fei
in
Accumulation
,
Acer - genetics
,
Acer - growth & development
2019
Background
Red maple (
Acer rubrum
L.) is one of the most common and widespread trees with colorful leaves. We found a mutant with red, yellow, and green leaf phenotypes in different branches, which provided ideal materials with the same genetic relationship, and little interference from the environment, for the study of complex metabolic networks that underly variations in the coloration of leaves. We applied a combination of NGS and SMRT sequencing to various red maple tissues.
Results
A total of 125,448 unigenes were obtained, of which 46 and 69 were thought to be related to the synthesis of anthocyanins and carotenoids, respectively. In addition, 88 unigenes were presumed to be involved in the chlorophyll metabolic pathway. Based on a comprehensive analysis of the pigment gene expression network, the mechanisms of leaf color were investigated. The massive accumulation of Cy led to its higher content and proportion than other pigments, which caused the redness of leaves. Yellow coloration was the result of the complete decomposition of chlorophyll pigments, the unmasking of carotenoid pigments, and a slight accumulation of Cy.
Conclusions
This study provides a systematic analysis of color variations in the red maple. Moreover, mass sequence data obtained by deep sequencing will provide references for the controlled breeding of red maple.
Journal Article
Detection and genomic characterization of Klebsiella pneumoniae and Escherichia coli harboring tet(X4) in black kites (Milvus migrans) in Pakistan
2024
The emergence of plasmid-mediated tigecycline resistance gene
tet
(X4) among clinically relevant bacteria has promoted significant concerns, as tigecycline is considered a last-resort drug against serious infections caused by multidrug-resistant bacteria. We herein focused on the isolation and molecular characterization of
tet
(X4)-positive
Klebsiella pneumoniae (K. pneumoniae)
and
Escherichia coli (E. coli)
in wild bird populations with anthropogenic interaction in Faisalabad, Pakistan. A total of 150 birds including black kites (
Milvus migrans
) and house crows (
Corvus splendens
) were screened for the presence of tigecycline resistance
K. pneumoniae
and
E. coli.
We found two
K. pneumoniae
and one
E. coli
isolate carrying
tet
(X4) originating from black kites. A combination of short- and long-read sequencing strategies showed that
tet
(X4) was located on a broad host range IncFII plasmid family in
K. pneumoniae
isolates whereas on an IncFII-IncFIB hybrid plasmid in
E. coli
. We also found an integrative and conjugative element ICE
Kp2
in
K. pneumoniae
isolate KP8336. We demonstrate the first description of
tet
(X4) gene in the WHO critical-priority pathogen
K. pneumoniae
among wild birds. The convergence of
tet
(X4) and virulence associated ICE
Kp2
in a wild bird with known anthropogenic contact should be further investigated to evaluate the potential epidemiological implications. The potential risk of global transmission of
tet
(X4)-positive
K. pneumoniae
and
E. coli
warrant comprehensive evaluation and emphasizes the need for effective mitigation strategies to reduce anthropogenic-driven dissemination of AMR in the environment.
Journal Article
Cannabis use disorder increases risk of large-artery atherosclerotic stroke and migraine with aura through mendelian randomization study
by
Zhang, Yanchi
,
Li, Weizhen
,
Dong, Lin
in
631/378/1689
,
631/378/1689/5
,
Alzheimer Disease - genetics
2024
Observational studies have shown some association between cannabis use disorder (CUD) and neurological disorders, but their causal relationship is unclear. In this study, we tested the potential causal relationship between CUD and three common neurological disorders using two-sample Mendelian randomization (TSMR) and multivariate MR (MVMR) methods. Thirty-two genetic loci were extracted as exposure factors from the largest genome-wide association study (GWAS) summary statistics for CUD to date. TSMR results showed that genetic prediction of CUD with all stroke, ischemic stroke, large-artery atherosclerotic stroke, migraine with aura, and Alzheimer’s disease (AD) had a positive causal relationship (
P
< 0.05), which was not found in several other diseases. The association between CUD and stroke, ischemic stroke, and AD in the MVMR study may have been influenced by confounding factors (
P
> 0.05). Subgroup analyses highlighted a causal relationship between genetically predicted CUD and large-artery atherosclerotic stroke (OR = 1.169; 95%CI 1.030–1.328;
P
= 0.016) and migraine with aura (OR = 1.142; 95% 1.021–1.278;
P
= 0.020). Our further functional mapping and annotation enrichment analyses using FUMA suggest that the brain-gut axis may serve as another layer of explanation for the existence of an association between CUD and neurological disorders.
Journal Article