Article
Chemistry, Applied
Beatriz Herranz, Celia Criado, Maria Angeles Pozo-Bayon, Maria Dolores Alvarez
Summary: The study characterized the rheological properties of three commercial thickened fluids before and after the addition of unstimulated human saliva, showing significant changes in viscosity, consistency, flow behavior, and structural deformability. Variability in saliva composition, particularly in alpha-amylase activity, could impact the rheological behavior of these products. Consideration of structural changes induced by saliva addition is important in designing safer dysphagia products.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Multidisciplinary
Vahid Nasirimarekani, Fernando Benito-Lopez, Lourdes Basabe-Desmonts
Summary: The technology involves manipulating droplets using a magnetic field through the addition of magnetic particles or using magneto responsive surfaces. The experimental study presented and characterized a tunable superparamagnetic ring which stabilizes and enables physical manipulation of droplets on a surface. This work opens new applications in microfluidics and studies on tunable interfaces between immiscible liquids.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Chemical
Mauro Marengo, Davide Pezzilli, Eleonora Gianquinto, Alex Fissore, Simonetta Oliaro-Bosso, Barbara Sgorbini, Francesca Spyrakis, Salvatore Adinolfi
Summary: Alpha-amylases are enzymes with a wide distribution and high sequence identity, but their catalytic activities have diverged throughout evolution. By comparing alpha-amylases from human, Aspergillus oryzae, and pancreatic porcine, we found that despite structural homology, these enzymes exhibit strikingly different activities mediated by different ions. This highlights the need to carefully consider these functional differences and establish proper experimental conditions when using alpha-amylases from different organisms as models for human enzymes.
Article
Dentistry, Oral Surgery & Medicine
Hanife Merva Parlak, Esra Buber, Ali Tugrul Gur, Erdem Karabulut, Ferda Alev Akalin
Summary: The increase in statherin level may provide a protective effect against periodontitis and is related to the degree of gingival inflammation and plaque accumulation.
ARCHIVES OF ORAL BIOLOGY
(2023)
Article
Neurosciences
Marine Thieux, Aurore Guyon, Vania Herbillon, Lydie Merle, Jean-Philippe Lachaux, Sabine Plancoulaine, Laurent Seugnet, Patricia Franco
Summary: The study found that sleep quality and difficulty falling asleep the night before travel were associated with sleepiness and attentional performance in drivers. 47% of drivers scored pathologically high on the Stanford Sleepiness Scale during the test.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Chemistry, Applied
Dandan Pu, Wen Duan, Yan Huang, Lili Zhang, Yuyu Zhang, Baoguo Sun, Fazheng Ren, Huiying Zhang, Yizhuang Tang
Summary: The study found that microstructural and chemical composition properties play a crucial role in determining oral processing behaviors and dynamic texture perception. Adhesiveness and softness perception of the bolus were identified as key factors triggering swallowing.
Article
Biochemistry & Molecular Biology
Hui Yang, Yingying Hou, Yujie Pan, Tingting Zhang, Qi Meng, Jianzhong Han, Weilin Liu, Daofeng Qu
Summary: Chewing ability and rice variety have an impact on the properties of the mixture, gastric emptying, and the degree of starch hydrolysis.
Article
Medicine, General & Internal
Tanya Deneva, Youri Ianakiev, Oliana Boykinova
Summary: The study aims to analyze salivary mental stress biomarkers in hospitalized patients with COVID-19 and determine their potential relationship with stress symptoms.
FRONTIERS IN MEDICINE
(2022)
Article
Materials Science, Multidisciplinary
Iacopo Mattich, Joan Sendra, Henning Galinski, Golnaz Isapour, Ahmet F. Demirors, Marco Lattuada, Simone Schuerle, Andre R. Studart
Summary: The assembly of superparamagnetic colloids inside droplets under rotating magnetic fields is studied, and this phenomenon is exploited to create functional optical devices.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Psychology, Clinical
Shauna G. Simon, Larry D. Jamner, Amy L. Dent, Douglas A. Granger, Jenna L. Riis
Summary: This study examined the impact of chronic cannabis use on the hypothalamic-pituitary-adrenal (HPA) axis and sympathetic nervous system (SNS) reactivity and regulation. The results showed that, compared to non-users, cannabis users exhibited blunted cortisol reactivity and greater reduction in sAA concentrations when faced with stress. This suggests that chronic cannabis users may have a weakened response to acute psychosocial stress and better SNS recovery.
ADDICTIVE BEHAVIORS
(2023)
Article
Multidisciplinary Sciences
Samia S. Abouelkheir, Hassan A. H. Ibrahim, Ehab A. Beltagy
Summary: The study presents a method for producing highly magnetic iron oxide nanoparticles using the Bacillus subtilis SE05 strain. The strain was able to reduce Fe2O3 and synthesize magnetic nanoparticles with a cubic spinel structure. The nanoparticles showed potential for use in biofuel production, demonstrating a significant increase in production compared to free amylase enzyme. This research provides a biologically and environmentally friendly approach to fabricating magnetic iron oxide nanoparticles.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Jing Meng, Qingyue Li, Zengyuan Cao, Dongyu Gu, Yunxiao Wang, Yunci Zhang, Yi Wang, Yi Yang, Fei He
Summary: An efficient method combining ligand fishing and high-speed counter-current chromatography was established to screen, enrich, and separate active components with α-amylase inhibitory activity from Tornio sinensis. The potential active compound 1,2,3,4,6-penta-O-galloyl-beta-D-glucose was identified to have higher activity against α-amylase compared to a non-target compound. This study provides a new approach for the study of natural active components.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biochemistry & Molecular Biology
Ana Glavina, Liborija Lugovic-Mihic, Dinko Martinovic, Livia Cigic, Leida Tandara, Marino Lukenda, Dolores Biocina-Lukenda, Daniela Supe-Domic
Summary: This study aimed to examine the relationship between salivary stress biomarkers (cortisol, alpha-amylase) and the psychological profile of patients with oral lichen planus (OLP) and primary burning mouth syndrome (BMS). The results showed that patients with BMS had higher cortisol concentrations and alpha-amylase activity, as well as higher scores for depression, anxiety, and stress, compared to patients with OLP and control subjects. There was a strong positive correlation between anxiety and depression, stress and depression, and stress and anxiety in both patient groups. The study concluded that an interdisciplinary psychoneuroimmunological approach is important for both OLP and BMS patients.
Article
Chemistry, Multidisciplinary
Chao Huang, Yu Wang, Rui Zhong, Zhenkun Sun, Yonghui Deng, Lunbo Duan
Summary: In this study, induction heating was used to enhance the catalytic performance of Suzuki-Miyaura cross-coupling reactions by employing conductive superparamagnetic microspheres loaded with Pd nanoparticles as heterogeneous catalysts. Compared to conventional joule heating, the reactions using induction heating exhibited better catalytic performance with higher conversion and yield. The improvement is mainly attributed to the localized heating effect and high efficiency of heat transfer.
CHINESE CHEMICAL LETTERS
(2023)
Article
Multidisciplinary Sciences
Haimei Xie, Xiaomei Zheng, Ye Huang, Weihao Li, Wenkai Wang, Qiao Li, Jiangtao Hou, Lulu Luo, Xiuying Kuang, Chuan-Quan Lin
Summary: Saliva composition has diurnal variations, which are not affected by citric acid stimulation. The variation characteristics of male and female under resting state and acid stimulation are basically the same, with the trend of salivary alpha-amylase activity being opposite to that of cortisol.
