Objective: To study the protective effects of Xuedan on the experimental gastric ulcer and the effects of anti-inflammatory, analgesic and bacteriostasis.
Method: The anti-gastric ulcer effects of Xuedan was investigated with gastric ulcer models induced by being immersed in cold water, having pylorus ligature and HAC injected into serous membrane in rats. The influence of gastric juice secrete in normal rats, the anti-inflammation action resulted from auricle swelling in mice, the analgesic action by mice body torsion method and the bacteriostotic effect in vitro were observed.
Result: Xuedan could reduce the ulcer area and decrease ulcer index, and gastric juice secrete. The hydrochloric acid in gastric juice and the activity of pepsin were reduced in rats. It could inhibit and disinfect Helicobacter pylori, lessen auricle swelling and the number of body torsion in mice.
Conclusion: Xuedan obvious preventive and treating effects on experimental gastric ulcer.
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Microb Ecol
February 2024
CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, No. 9, Section 4, South Renmin Road, Chengdu, 610041, China.
Sphagnum mosses are keystone plant species in the peatland ecosystems that play a crucial role in the formation of peat, which shelters a broad diversity of endophytic bacteria with important ecological functions. In particular, methanotrophic and nitrogen-fixing endophytic bacteria benefit Sphagnum moss hosts by providing both carbon and nitrogen. However, the composition and abundance of endophytic bacteria from different species of Sphagnum moss in peatlands of different nutrient statuses and their drivers remain unclear.
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April 2022
College of Pharmaceutical Sciences and Chinese Medicine, Southwest University, Chongqing, China.
Cucurbitacins have a variety of bioactivities, such as anticancer, anti-inflammatory, antidepressant-like, and antiviral effects, but their pharmacological effect in ulcerative colitis (UC) has not been reported until now. Thus, this study aims to investigate the preventive effects of Xuedan sustained release pellets (XSPs) on UC rats and the underlying mechanisms. XSPs were prepared by extracting cucurbitacins from .
View Article and Find Full Text PDFTalanta
February 2022
Department of Respiratory Medicine, Fujian Medical University Union Hospital, Fuzhou, China; Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China. Electronic address:
This work describes the unique design of a bidirectional activatable synergetic DNA machine (BAS-DNA machine) for speeded and ultrasensitive determination of microRNA-21 (miR-21), a well-known biomarker for biomedical research and early diagnosis of lung cancer. The BAS-DNA machine is composed by a pair of track strands (Track 1 and Track 2) encoding with two regions in the opposite direction for miR-21 recognition. Introduction of miR-21 can hybridize either with Track 1 or with Track 2 to activate the BAS-DNA machine with a synergistic effect for speeded amplifying the fluorescence signal.
View Article and Find Full Text PDFSoft Matter
December 2021
Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA.
The construction of functional nano-/micro-architectures through self-assembly and self-organization of organic molecules and polymeric materials plays an important role in the development of many technologies. In this study, we report the spontaneous formation of uniform polymer microrods with lengths of up to a few tens of micrometers from paraffin wax. Through a solvent attrition approach, colloidal structures of paraffin wax are introduced into water.
View Article and Find Full Text PDFNat Commun
July 2019
Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL, 60439, USA.
Semiconductor quantum rings are topological structures that support fascinating phenomena such as the Aharonov-Bohm effect and persistent current, which are of high relevance in the research of quantum information devices. The annular shape of quantum rings distinguishes them from other low-dimensional materials, and enables topologically induced properties such as geometry-dependent spin manipulation and emission. While optical transition dipole moments (TDMs) in zero to two-dimensional optical emitters have been well investigated, those in quantum rings remain obscure despite their utmost relevance to the quantum photonic applications of quantum rings.
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