Publications by authors named "Ziwei Liu"

Purposes: Positron emission tomography (PET) imaging is widely used to detect focal lesions or diseases and to study metabolic abnormalities between organs. However, analyzing organ correlations alone does not fully capture the characteristics of the metabolic network. Our work proposes a graph-based analysis method for quantifying the topological properties of the network, both globally and at the nodal level, to detect systemic or single-organ metabolic abnormalities caused by diseases such as lung cancer.

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Objective: To identify the risk factors, manifestations, and clinical implications of chyle leak (CL) after pancreatic surgery, and to reappraise the International Study Group for Pancreatic Surgery (ISGPS) definition and classification of CL.

Summary Background Data: The risk factors, clinical scenarios, and management of CL after pancreatic surgery remain controversial.

Methods: Data from patients who underwent pancreatic surgery between January 2019 and July 2023 were retrieved from an institutional database.

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As a representative active ingredient of traditional Chinese medicine (TCM) and a clinically approved anticancer drug, elemene (ELE) exhibits exciting potential in the antitumor field; however, appropriate drug formulations still need to be explored for specific diseases such as postoperative cancer recurrence and metastasis. Herein, we report an ELE hydrogel with controlled drug release kinetics that can allow ELE to maintain effective concentrations at local lesion sites for extended periods to enhance the bioavailability of ELE. Concretely, dopamine-conjugated hyaluronic acid is synthesized and utilized to prepare ELE nanodrug-embedded hydrogels.

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The growing prevalence of microbial infections, and antimicrobial resistance (AMR) stemming from the overuse and misuse of antibiotics, call for novel therapeutic agents, particularly ones targeting resistant microbial strains. Scientists are striving to develop innovative agents to tackle the rising microbial infections and abate the risk of AMR. Pyrazole, a five-membered heterocyclic compound belonging to the azole family, is a versatile scaffold and serves as a core structure in many drugs with antimicrobial and other therapeutic effects.

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Rotavirus A (RVA) infects a relatively wide host range. Studying the evolutionary dynamics of viral genomes and the evolution of host adaptations can inform the development of epidemiological models of disease transmission. Moreover, comprehending the adaptive evolution of viruses in the host could provide insights into how viruses promote evolutionary advantages on a larger scale at host level.

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Research has demonstrated the significant involvement of immune cells in the development and progression of prostate cancer (PCa). However, the precise causal relationship between immune cells and PCa remains unclear. This study utilized bidirectional Mendelian randomization (MR) analysis to investigate the causal link between immune cells and PCa.

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The emergence of multidrug-resistant microbial species has become a global health concern, calling for novel antimicrobial agents. Peptoids, a class of synthetic peptidomimetics with unique structural properties, exhibit antimicrobial activity against a broad-spectrum of microbes, in addition to their stability to enzymatic degradation, selectivity, and relative ease of synthesis. Thus, peptoids have great potential in combating various drug-resistant pathogenic microbes.

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With the help of traffic lights and street cameras, optical camera communication (OCC) can be adopted in Internet of Vehicles (IoV) applications to realize communication between vehicles and roadside units. However, the encoded light emitted by these OCC transmitters (LED infrastructures on the roadside and/or LED-based headlamps embedded in cars) will generate stripe patterns in image frames captured by existing license-plate recognition systems, which seriously degrades the accuracy of the recognition. To this end, we propose and experimentally demonstrate a method that can reduce the interference of OCC stripes in the image frames captured by the license-plate recognition system.

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Protein aggregation is associated with various diseases caused by protein misfolding. Among them, amylin deposition is a prominent feature of type 2 diabetes. At present, the mechanism of amylin aggregation remains unclear, and this has hindered the treatment of type 2 diabetes.

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Tetracycline (TC) is one of the most important therapeutic drugs that is widely used in hospitals. However, its harmful effects on human health and various ecosystems cannot be ignored. Owing to its poor metabolic activity and low biodegradability, TC commonly discharges as the parent compound and accumulates readily in sludges and soils by precipitation from wastewater, which can induce the evolution of antibiotic-resistant bacteria; therefore, it has been listed as one of the new pollutants with potential ecotoxicological risk.

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Article Synopsis
  • Ferroptosis is a special type of cell death that is different from other types like apoptosis and necrosis, and it happens because of iron-related processes in the body.
  • * Since it was discovered in 2012, scientists have been paying a lot of attention to ferroptosis, as it may help in treating cancer and could overcome the problem of drug resistance.
  • * There’s a lot of potential for using nanotechnology to improve treatments related to ferroptosis, but more research is needed to understand how it can help with various diseases beyond cancer, like brain and heart diseases.
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Background: Low back pain has become a globally challenging health problem, and about 90% of cases are nonspecific. Due to the risks associated with opioid use and the limited effectiveness of drug treatment, acupuncture and other non-drug methods have become the first-line treatment for this disease. However, the best acupuncture method has not yet been determined.

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Introduction: This study combined the bioinformatics and experiment-related technologies to analyze the impact of steroid 5 alpha-reductase 3 (SRD5A3) on the prognosis and immune microenvironment of Liver Hepatocellular Carcinoma (LIHC).

Method: Gene expression and clinical data were obtained from public databases. The prognosis was evaluated using survival, multifactor Cox, enrichment, and mutation analyses.

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Article Synopsis
  • - The study investigates the complex link between schizophrenia and violent behavior, aiming to identify risk factors associated with violence in patients diagnosed with the disorder.
  • - A retrospective case-control methodology was used, comparing violent offenders with schizophrenia to non-violent individuals over a four-year period at a specific hospital unit.
  • - Key findings indicate that a history of violence, persecutory delusions, and lack of regular treatment are significant risk factors for violence, while having insight into their condition appears to reduce risk.
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Article Synopsis
  • Modern life is homochiral, meaning it primarily utilizes D-sugars in nucleic acids and L-amino acids in proteins, suggesting a significant evolutionary process.
  • The concept of a prebiotic RNA World implies that L-amino acids arose due to chiral transfer from an earlier D-RNA World, facilitated by aminoacyl-RNAs that helped develop the genetic code.
  • Research using D-ribozymes shows that while there is detectable chiral selectivity favoring certain enantiomers, it does not support the idea that D-RNA inherently prefers to react with L-amino acids, indicating that L-proteins can originate from different chiral contexts.
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The inversion of substrate size specificity is an evolutionary roadblock for proteins. The Duf4243 dioxygenases GedK and BTG13 are known to catalyze the aromatic cleavage of bulky tricyclic hydroquinone. In this study, we discover a Duf4243 dioxygenase PaD that favors small monocyclic hydroquinones from the penicillic-acid biosynthetic pathway.

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The preparation of histology slides is a critical step in histopathology, and poor-quality histology slides with weak adhesion of tissue sections to the substrate often affect diagnostic accuracy and sometimes lead to diagnostic failure due to tissue section detachment. This issue has been of concern and some methods have been proposed to enhance tissue-substrate adhesion. Unfortunately, quantitative analysis of the adhesion between tissue sections and glass slides is still challenging.

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Image- and video-based 3D human recovery (i.e., pose and shape estimation) have achieved substantial progress.

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Video-to-Video synthesis (Vid2Vid) gains remarkable performance in generating a photo-realistic video from a sequence of semantic maps, such as segmentation, sketch and pose. However, this pipeline is heavily limited to high computational cost and long inference latency, mainly attributed to two essential factors: 1) network architecture parameters, 2) sequential data stream. Recently, the parameters of image-based generative models have been significantly reduced via more efficient network architectures.

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Panoptic Scene Graph (PSG) is a challenging task in Scene Graph Generation (SGG) that aims to create a more comprehensive scene graph representation using panoptic segmentation instead of boxes. Compared to SGG, PSG has several challenging problems: pixel-level segment outputs and full relationship exploration (It also considers thing and stuff relation). Thus, current PSG methods have limited performance, which hinders downstream tasks or applications.

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Postharvest decay, primarily caused by pathogenic fungi in ripening fruits and fresh vegetables, poses a challenge to agricultural sustainability and results in significant economic losses. The regulation of the fruit ripening by DNA methylation has been well demonstrated, while defense response of fruit underlying epigenetic regulation against postharvest decay remains uncertain. In the present study, treatment of tomato fruits with the DNA methyltransferase inhibitor 5-Azacytidine (5-Aza) notably decreased their susceptibility to gray mold.

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Background: The introduction of non-native species is a primary driver of biodiversity loss in freshwater ecosystems. The redclaw crayfish (Cherax quadricarinatus) is a freshwater species that exhibits tolerance to hypoxic stresses, fluctuating temperatures, high ammonia concentration. These hardy physiological characteristics make C.

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Neural Prompt Search.

IEEE Trans Pattern Anal Mach Intell

July 2024

The size of vision models has grown exponentially over the last few years, especially after the emergence of Vision Transformer. This has motivated the development of parameter-efficient tuning methods, such as learning adapter layers or visual prompt tokens, which allow a tiny portion of model parameters to be trained whereas the vast majority obtained from pre-training are frozen. However, designing a proper tuning method is non-trivial: one might need to try out a lengthy list of design choices, not to mention that each downstream dataset often requires custom designs.

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