Publications by authors named "Peng-Feng Li"
Article Synopsis
- - The study aimed to analyze how the Omicron variant affected the incidence and clinical presentation of acute primary angle closure (APAC) in patients at Shenzhen Eye Hospital during the pandemic.
- - Compared to two pre-pandemic control periods, the prevalence of APAC was significantly higher during the Omicron outbreak, with a rise from 7.87% and 8.96% in control groups to 23.43% in the pandemic cohort, along with increased surgical rates and larger pupil diameters among patients.
- - Key findings revealed that 83% of Omicron-infected patients experienced ocular symptoms within three days of systemic symptoms, suggesting a potential link between Omicron infection and increased severity of APAC during this period.
Genome-Wide Characterization of High-Affinity Nitrate Transporter 2 (NRT2) Gene Family in .
Int J Mol Sci
April 2022
Article Synopsis
- - The study focuses on the Nitrate transporter 2 (NRT2) gene family, crucial for nitrogen uptake and stress resistance, identifying 31 genes in 'Zhongshuang11' and 19 in 'Darmor-'
- - Genes were categorized into three groups based on phylogenetic analysis, revealing expansions due to allopolyploidization and smaller duplication events, with a conserved regulatory structure across groups
- - RNA-seq and RT-qPCR findings highlighted diverse expression patterns in Group I under low nitrogen stress while Groups II and III exhibited more conserved expression, providing insights for future research.
Article Synopsis
- - The HAK family is the largest potassium transporter family in plants, crucial for potassium uptake, stress resistance, and plant development, but not yet characterized in a specific context.
- - This study identified 40 potential HAK genes grouped into four categories based on phylogenetic analysis, revealing conserved gene structures and factors influencing their expression.
- - Analysis showed that certain HAK genes are significantly more responsive to hormone induction and K-deficiency conditions, providing candidate genes for future research into their functions.
Article Synopsis
- The NITRATE TRANSPORTER 1/PEPTIDE TRANSPORTER (NRT1/PTR) family includes crucial transporters in plants that handle various substrates, and this study focuses on their roles in the oil crop Brassica napus.
- Researchers identified 199 BnaNPF genes, categorized into 11 subfamilies, and found conserved structures as well as specific expression patterns influenced by hormones and stress.
- The evolutionary analysis of these genes indicates that their rapid expansion in B. napus is largely due to previous hybridizations and duplications, with certain genes consistently expressing across different developmental stages and specific plant organs.
Genome-wide survey of the bHLH super gene family in Brassica napus.
BMC Plant Biol
March 2020
Article Synopsis
- - A study identified 602 bHLH genes in the oil crop Brassica napus and classified them into 35 subfamilies, including seven new ones, based on genetic and structural characteristics.
- - Analyses showed that hybridization with other Brassica species contributed to the expansion of these genes, and their expression varied across different plant tissues, indicating their roles in B. napus development.
- - Treatment with various hormones affected the expression of many bHLH genes, suggesting that a significant number of them are involved in root development, providing insights into their functions for future research.
Phosphate (Pi) transporters play critical roles in Pi acquisition and homeostasis. However, currently little is known about these genes in oil crops. In this study, we aimed to characterize the five Pi transporter gene families (PHT1-5) in allotetraploid .
View Article and Find Full Text PDFThe plant-specific Teosinte-branched 1/Cycloidea/Proliferating (TCP) transcription factor genes are involved in plants' development, hormonal pathways, and stress response but their evolutionary history is uncertain. The genome-wide analysis performed here for 47 plant species revealed 535 TCP candidates in terrestrial plants and none in aquatic plants, and that TCP family genes originated early in the history of land plants. Phylogenetic analysis divided the candidate genes into Classes I and II, and Class II was further divided into CYCLOIDEA (CYC) and CINCINNATA (CIN) clades; CYC is more recent and originated from CIN in angiosperms.
View Article and Find Full Text PDFThe plant-specific () transcription factor gene family is important for plant growth and development but little studied in oil crops. We identified and characterized 58 putative genes in (s), which were divided into three major clades and nine subclades based on the gene structure and conserved motifs. Collinearity analysis revealed that most s were the products of allopolyploidization and segmental duplication events.
View Article and Find Full Text PDFModel based control of a rehabilitation robot for lower extremities.
Annu Int Conf IEEE Eng Med Biol Soc
March 2011
This paper mainly focuses on the trajectory tracking control of a lower extremity rehabilitation robot during passive training process of patients. Firstly, a mathematical model of the rehabilitation robot is introduced by using Lagrangian analysis. Then, a model based computed-torque control scheme is designed to control the constrained four-link robot (with patient's foot fixed on robot's end-effector) to track a predefined trajectory.
View Article and Find Full Text PDFThis paper presents a scientific strategy for cycling induced by the functional electrical stimulation. In order to simulate the FES-cycling movement produced by human body, a neuro-musculo-skeletal model containing 16 segments and 186 muscles is developed, which can simulate human movements precisely. This model contains mathematical model of electrically stimulated skeletal muscles.
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