Results 41 to 50 of about 32,992 (301)

Structural Modification and Biological Activity of Polysaccharides

Molecules, 2023
Natural polysaccharides are macromolecular substances with a wide range of biological activities. The structural modification of polysaccharides by chemical means can enhance their biological activity.
Ting Zhao, Min Yang, Lina Ma, Xinglong Liu, Qiteng Ding, Guodong Chai, Yang Lu, Hewei Wei, Shuai Zhang, Chuanbo Ding   +9 more
doaj   +1 more source

Hydraulic Resistance and Macromolecular Structure of Aerobic and Anaerobic Mixed-Culture Extracellular Polymeric Substances Gel Layers: Opportunities and Challenges

Frontiers in Environmental Science, 2022
Soluble Extracellular Polymeric Substances (sEPS) are a mixture of microbial soluble polymers produced during aerobic or anaerobic treatment of wastewater.
Emanuel Fonseca Dinis Costa, Emanuel Fonseca Dinis Costa, Maria Cristina Gagliano, Antoine Kemperman, Antoine Kemperman, Huub H. M. Rijnaarts, Rob G. H. Lammertink, Hardy Temmink, Hardy Temmink   +8 more
doaj   +1 more source

Gender differences in microcirculation: Observation using the hamster cheek pouch

Clinics, 2013
OBJECTIVES: Estrogen has been shown to play an important protective role in non-reproductive systems, such as the cardiovascular system. Our aim was to observe gender differences in vivo with regard to the increase in macromolecular permeability and ...
Diogo Guarnieri Panazzolo, Lucia Henriques Alves da Silva, Fatima Zely Garcia de Almeida Cyrino, Fernando Lencastre Sicuro, Luiz Guilherme Kraemer-Aguiar, Eliete Bouskela   +5 more
doaj   +1 more source

Food Polysaccharides and Proteins: Processing, Characterization, and Health Benefits

Foods
Natural macromolecular substances are prevalent in the organs of plants and animals, such as polysaccharides, resins, proteins, etc [...]
Liyuan Rong, Mingyue Shen, Yanjun Zhang, Hansong Yu, Jianhua Xie   +4 more
doaj   +1 more source

Temperature dependency of VOCs release characteristics of asphalt materials under varying test conditions

Journal of Traffic and Transportation Engineering (English ed. Online), 2022
Asphalt pavement is increasingly used in paving and roofing. However, the release of volatile organic compounds (VOCs) from asphalt harm both the environment and humans.
Xiwen Chang, Yue Xiao, Yongshuang Long, Feng Wang, Zhanping You   +4 more
doaj   +1 more source

Hydroboration-Oxidation of (±)-(1α,3α,3aβ,6aβ) -1,2,3,3a,4,6a-Hexahydro-1,3-pentalenedimethanol and Its O-Protected Derivatives: Synthesis of New Compounds Useful for Obtaining (iso)Carbacyclin Analogues and X-ray Analysis of the Products

Molecules, 2017
Hydroboration-oxidation of 2α,4α-dimethanol-1β,5β-bicyclo[3.3.0]oct-6-en dibenzoate (1) gave alcohols 2 (symmetric) and 3 (unsymmetric) in ~60% yield, together with the monobenzoate diol 4a (37%), resulting from the reduction of the closer benzoate by ...
Constantin I. Tănase, Florea G. Cocu, Miron Teodor Căproiu, Constantin Drăghici, Sergiu Shova   +4 more
doaj   +1 more source

Biomass-Derived Plant Extracts in Macromolecular Chitosan Matrices as a Green Coating for PLA Films

Journal of Functional Biomaterials, 2022
Due to the growing problem of food and packaging waste, environmental awareness, and customer requirements for food safety, there is a great need for the development of innovative and functional packaging.
Lidija Fras Zemljič, Tjaša Kraševac Glaser, Olivija Plohl, Ivan Anžel, Vida Šimat, Martina Čagalj, Eva Mežnar, Valentina Malin, Meta Sterniša, Sonja Smole Možina   +9 more
doaj   +1 more source

Pleiotropic Role of Tenascin-C in Central Nervous System Diseases: From Basic to Clinical Applications

Frontiers in Neurology, 2020
The extracellular matrix is composed of a variety of macromolecular substances secreted by cells, which form a complex network that supports and connects tissue structures, regulates the morphogenesis of tissues, and maintains the physiological ...
Chen Hanmin, Zhou Xiangyue, Cameron Lenahan, Wang Ling, Ou Yibo, He Yue   +5 more
doaj   +1 more source

Identification of compositional and structural changes in the nucleus pulposus of patients with cervical disc herniation by Raman spectroscopy

Frontiers in Endocrinology, 2022
PurposeCervical disc herniation (CDH) is one of the most common spinal diseases in modern society; intervertebral disc degeneration (IVDD) has long been considered as its primary cause.
Zhiqi Wang, Tao Xue, Tongxing Zhang, Xuehui Wang, Hui Zhang, Zhongyu Gao, Qiang Zhou, Erke Gao, Tao Zhang, Zhaoyang Li   +9 more
doaj   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source