2,320 research outputs found
Correlation between periostin and SNCG and esophageal cancer invasion, infiltration and apoptosis
AbstractObjectiveTo investigate the correlation between periostin and SNCG and esophageal cancer invasion, infiltration and apoptosis.MethodsA total of 78 cases esophageal surgical resection specimens were collected, expression of periostin and SNCG in esophageal cancer were detected. Effect of periostin and SNCG in esophageal carcinoma invasion and infiltration was analyzed.ResultsThe upregulated rate of periostin had significant difference in esophageal cancer tissues (39.74%), adjacent tissues (17.86%) and normal tissues (0.00%); The positive expression rates of SNCG had significant difference in esophageal cancer tissues (61.54%), adjacent tissues (32.14%) and normal tissues (1.96%); The upregulated rate of periostin had a significant correlation with lymph node metastasis, adventitia invasion, TNM stage; The positive expression rates of SNCG had a significant correlation with differentiation degree, lymph node metastasis, adventitia invasion, TNM stage; Apoptosis index of the positive of expression of SNCG of esophageal cancer tissue (4.541±2.267) was significantly lower than that of the negative expression (7.316±2.582) (P<0.05).ConclusionsSNCG may play an important role in invasion, infiltration and apoptosis of esophageal cancer and serve as target spots in the targeted therapy of esophageal cancer
Development and evaluation of a prototype non-woven fabric filter for purification of malaria-infected blood
BACKGROUND: Many malaria-related studies depend on infected red blood cells (iRBCs) as fundamental material; however, infected blood samples from human or animal models include leukocytes (white blood cells or WBCs), especially difficult to separate from iRBCs in cases involving Plasmodium vivax. These host WBCs are a source of contamination in biology, immunology and molecular biology studies, requiring their removal. Non-woven fabric (NWF) has the ability to adsorb leukocytes and is already used as filtration material to deplete WBCs for blood transfusion and surgery. The present study describes the development and evaluation of a prototype NWF filter designed for purifying iRBCs from malaria-infected blood. METHODS: Blood samples of P. vivax patients were processed separately by NWF filter and CF11 column methods. WBCs and RBCs were counted, parasite density, morphology and developing stage was checked by microscopy, and compared before and after treatment. The viability of filtrated P. vivax parasites was examined by in vitro short-term cultivation. RESULTS: A total of 15 P. vivax-infected blood samples were treated by both NWF filter and CF11 methods. The WBC removal rate of the NWF filter method was 99.03%, significantly higher than the CF11 methods (98.41%, P < 0.01). The RBC recovery rate of the NWF filter method was 95.48%, also significantly higher than the CF11 method (87.05%, P < 0.01). Fourteen in vitro short-term culture results showed that after filter treatment, P. vivax parasite could develop as normal as CF11 method, and no obvious density, developing stage difference were fund between two methods. CONCLUSIONS: NWF filter filtration removed most leukocytes from malaria-infected blood, and the recovery rate of RBCs was higher than with CF11 column method. Filtrated P. vivax parasites were morphologically normal, viable, and suitable for short-term in vitro culture. NWF filter filtration is simple, fast and robust, and is ideal for purification of malaria-infected blood
Hybrid Strangeon Stars
It was conjectured that the basic units of the ground state of bulk strong
matter may be strange-clusters called strangeons, and they can form self-bound
strangeon stars that are highly compact. Strangeon stars can develop a strange
quark matter (SQM) core at high densities, particularly in the
color-flavor-locking phase, yielding a branch of hybrid strangeon stars. We
explore the stellar structure and astrophysical implications of hybrid
strangeon stars. We find that hybrid strangeon stars can meet various
astrophysical constraints on pulsar masses, radii, and tidal deformabilities.
Finally, we show that the strangeon-SQM mixed phase is not preferred if the
charge-neutrality condition is imposed at the strangeon-SQM transition region.Comment: 10 pages, 4 figure
Differential isospin-fractionation in dilute asymmetric nuclear matter
The differential isospin-fractionation (IsoF) during the liquid-gas phase
transition in dilute asymmetric nuclear matter is studied as a function of
nucleon momentum. Within a self-consistent thermal model it is shown that the
neutron/proton ratio of the gas phase becomes {\it smaller} than that of the
liquid phase for energetic nucleons, although the gas phase is overall more
neutron-rich. Clear indications of the differential IsoF consistent with the
thermal model predictions are demonstrated within a transport model for
heavy-ion reactions. Future comparisons with experimental data will allow us to
extract critical information about the momentum dependence of the isovector
strong interaction.Comment: Rapid Communication, Phys. Rev. C (2007) in pres
Urban Generative Intelligence (UGI): A Foundational Platform for Agents in Embodied City Environment
Urban environments, characterized by their complex, multi-layered networks
encompassing physical, social, economic, and environmental dimensions, face
significant challenges in the face of rapid urbanization. These challenges,
ranging from traffic congestion and pollution to social inequality, call for
advanced technological interventions. Recent developments in big data,
artificial intelligence, urban computing, and digital twins have laid the
groundwork for sophisticated city modeling and simulation. However, a gap
persists between these technological capabilities and their practical
implementation in addressing urban challenges in an systemic-intelligent way.
This paper proposes Urban Generative Intelligence (UGI), a novel foundational
platform integrating Large Language Models (LLMs) into urban systems to foster
a new paradigm of urban intelligence. UGI leverages CityGPT, a foundation model
trained on city-specific multi-source data, to create embodied agents for
various urban tasks. These agents, operating within a textual urban environment
emulated by city simulator and urban knowledge graph, interact through a
natural language interface, offering an open platform for diverse intelligent
and embodied agent development. This platform not only addresses specific urban
issues but also simulates complex urban systems, providing a multidisciplinary
approach to understand and manage urban complexity. This work signifies a
transformative step in city science and urban intelligence, harnessing the
power of LLMs to unravel and address the intricate dynamics of urban systems.
The code repository with demonstrations will soon be released here
https://github.com/tsinghua-fib-lab/UGI
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