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Promising role of D-amino acids in irritable bowel syndrome

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World Journal of Gastroenterology 2022年第31期28卷 4471-4474页

作者： Yuka Ikeda Kurumi Taniguchi Haruka Sawamura ai tsuji Satoru Matsuda Department of Food Science and Nutrition Nara Women's UniversityNara 630-8506Japan

Irritable bowel syndrome(IBS)is an important health care *** in the microbiota of the gut-brain axis may be linked to the pathophysiology of *** dietary intake could contribute to produce various metabolites including Damino acids by the fermentation by the gut microbiota.D-amino acids are the enantiomeric counterparts of L-amino acids,in general,which could play key roles in cellular physiological processes against various oxidative ***,the presence of D-amino acids has been shown to be linked to the protection of several organs in the *** particular,the gut microbiota could play significant roles in the stability of emotion via the action of D-amino ***,we would like to shed light on the roles of D-amino acids,which could be used for the treatment of IBS.

关键词： Irritable bowel syndrome D-amino acid Gut microbiota Colitis Probiotics Fecal microbiota transplantation

Efficacy of probiotics on the modulation of gut microbiota in the treatment of diabetic nephropathy

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World Journal of Diabetes 2022年第3期13卷 150-160页

作者： Nozomi Nagase Yuka Ikeda ai tsuji Yasuko Kitagishi Satoru Matsuda Department of Food Science and Nutrition Nara Women's UniversityNara 630-8506Japan

Diabetic nephropathy(DN)is a major cause of end-stage renal disease,and therapeutic options for preventing its progression are *** number of patients with DN has been increasing in Asian countries because of westernization of dietary lifestyle,which may be associated with the following changes in gut *** in the gut microbiota composition can lead to an imbalanced gastrointestinal environment that promotes abnormal production of metabolites and/or inflammatory *** microenvironments of the gut could be changed in the different stages of *** particular,altered levels of short chain fatty acids,D-amino acids,and reactive oxygen species biosynthesis in the gut have been shown to be relevant to the pathogenesis of the *** far,evidence suggests that the gut microbiota may play a key role in determining networks in the development of *** directing the gut microbiota deserve further investigation as a new protective therapy in *** this review,we discuss the potential roles of the gut microbiota and future perspectives in the protection and/or treatment of kidneys.

关键词： Diabetic nephropathy Short chain fatty acids Superoxide dismutase Reactive oxygen species D-amino acids Gut microbiota Diabetes mellitus Renal disease

Secretome-microRNA and anti-proliferative APRO family proteins as cancer prevention and stem cell research strategies

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BIOCELL 2022年第5期46卷 1163-1167页

作者： YUKA IKEDA NOZOMI NAGASE ai tsuji KURUMI TANIGUCHI YASUKO KITAGISHI SATORU MATSUDA Department of Food Science and Nutrition Nara Women’s UniversityNara630-8506Japan

Stemness of cancer cells contains limitless self-renewal *** the purpose of proliferation,secretome might exert its effects via the paracrine *** microRNAs enclosed in the secretome of cancer stem cells could regulate the expression of anti-proliferative APRO family *** biological functions of APRO family proteins seems to be quite intricate,however,which might be a key modulator of microRNAs,then could regulate the proliferation of cancer *** addition to affecting proliferation/differentiation during cellular development,APRO family proteins might also play an imperious role on keeping homeostasis in healthy stem cells under a physiological ***,relationship between the microRNAs and the APRO family proteins has attracted much attention in the field of cancer research and regenerative ***,we have described the molecular mechanism behind this interplay that have a potential role in the future promising tools with targeting APRO family proteins for the medical applications.

关键词： Cancer Stem cell Secretome Proliferation APRO family microRNA

Neuroprotection by dipeptidyl-peptidase-4 inhibitors and glucagonlike peptide-1 analogs via the modulation of AKT-signaling pathway in Alzheimer’s disease

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World Journal of Biological Chemistry 2021年第6期12卷 104-113页

作者： Yuka Ikeda Nozomi Nagase ai tsuji Yasuko Kitagishi Satoru Matsuda Satoru Matsuda Food Science and NutritionNara Women’s UniversityNara 630-8506Japan

Alzheimer’s disease(AD)is the most common reason for progressive dementia in the *** has been shown that disorders of the mammalian/mechanistic target of rapamycin(mTOR)signaling pathways are related to the *** the other hand,diabetes mellitus(DM)is a risk factor for the cognitive *** pathogenesis of the neuronal impairment caused by diabetic hyperglycemia is intricate,which contains neuro-inflammation and/or neurodegeneration and ***-like peptide-1(GLP1)is interesting as a possible link between metabolism and brain *** of GLP1 activity can influence amyloid-beta peptide aggregation via the phosphoinositide-3 kinase/AKT/mTOR signaling pathway in *** GLP1 receptor agonists have been shown to have favorable actions on the brain such as the improvement of neurological *** might also exert a beneficial effect with refining learning and memory on the cognitive impairment induced by *** experimental and clinical evidence indicates that dipeptidyl-peptidase-4(DPP4)inhibitors,being currently used for DM therapy,may also be effective for AD *** DPP-4 inhibitors have demonstrated neuroprotection and cognitive improvements in animal *** further studies for mTOR,GLP1,and DPP4 signaling pathways in humans would be intensively required,they seem to be a promising approach for innovative *** would like to review the characteristics of AD pathogenesis,the key roles of mTOR in AD and the preventive and/or therapeutic suggestions of directing the mTOR signaling pathway.

关键词： Alzheimer’s disease Cognitive disorder Dementia Glucagon-like peptide-1 Dipeptidyl peptidase-4 Mammalian/mechanistic target of rapamycin

Advantageous tactics with certain probiotics for the treatment of graft-versus-host-disease after hematopoietic stem cell transplantation

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World Journal of Hematology 2023年第2期10卷 15-24页

作者： Sayuri Yoshikawa Kurumi Taniguchi Haruka Sawamura Yuka Ikeda ai tsuji Satoru Matsuda Food Science and Nutrition Nara Women's UniversityNara 630-8506Japan

Hematopoietic stem cell transplantation(HSCT)becomes a standard form of cellular therapy for patients with malignant *** is the first-choice of immunotherapy,although HSCT can be associated with many complications such as graft-versus-host disease(GVHD)which is a major cause of morbidity and mortality after allogeneic *** has been shown that certain gut microbiota could exert protective and/or regenerative immunomodulatory effects by the production of short-chain fatty acids(SCFAs)such as butyrate in the experimental models of GVHD after allogeneic *** of gut commensal bacteria which can produce SCFAs may worsen dysbiosis,increasing the risk of *** of G-protein coupled receptors such as GPR41 seems to be upre-gulated in the presence of commensal bacteria,which might be associated with the biology of regulatory T cells(Tregs).Treg cells are a suppressive subset of CD4 positive T lymphocytes implicated in the prevention of GVHD after allogeneic ***,we discuss the current findings of the relationship between the modification of gut microbiota and the GVHD-related immunity,which suggested that tactics with certain probiotics for the beneficial symbiosis in gut-immune axis might lead to the elevation of safety in the allogeneic HSCT.

关键词： Gut microbiota Hematopoietic stem cell Reactive oxygen species Allogeneic hematopoietic stem cell transplantation Graft vs host disease Gut-immune axis©The Author(s)2023.Published by Baishideng Publishing Group Inc.All rights reserved.

Crustal magma oxidation state and endowments in porphyry copper deposits

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Science China Earth Sciences 2025年第1期68卷 226-236页

作者： Yumin ai Massimo CHIARADIA Chao WU Huayong CHEN Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Earth Sciences University of Geneva Guangdong Provincial Key Laboratory of Mineral Physics and Materials

Porphyry copper deposits（PCDs） supply the majority of the world's copper（Cu） as well as significant amounts of molybdenum（Mo） and gold（Au）. The formation of these deposits is controlled by a variety of geological factors, among which the magmatic oxidation is one of the focuses of current research. This study investigates the redox characteristics of arc magmas by analyzing the ratio of vanadium（V） to scandium（Sc） and its correlation with the oxygen fugacity （fO2） of magmas from arcs of various crustal thicknesses globally. We compiled an extensive dataset of published V/Sc values and studied the partition coefficients of Vand Sc between minerals and silicate melts across various magmatic environments. The results demonstrate that fractional crystallization of magnetite markedly reduces V/Sc values of the residual melt. Furthermore, magnesium number（Mg#） at the onset of magnetite fractionation is strongly positively correlated with fO2of the equilibrium magma. Based on this,the oxidation of arc magmas from different crustal thicknesses can be evaluated. The result suggests that magmas generated in crusts thicker than 20 km tend to be more oxidized with increasing crust thickness. This trend is attributed to enhanced intracrustal differentiation processes involving garnet and amphibole, particularly in mature island and continental arcs. In contrast,magmas in thinner arc crusts（<20 km）, which are significantly influenced by subducted slab materials, display higher oxidation states than most of their thicker crust counterparts. These findings suggest that both subduction dynamics and crustal thickness play a vital role in determining the oxidation state of arc magmas and, consequently, their capacity to generate PCDs. Highly oxidized, primitive arc magmas are less favorable for PCD formation due to that they tend to experience magnetite fractionation and thus sulfide saturation in the early stage of magma evolution, a process leading to copper depletion. On the contra

关键词： Magma evolution V/Sc systematics Magnetite Oxygen fugacity Porphyry copper deposits

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei Tang Shulin Bai Xiaodong Li Peng ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第1期68卷 174-180页

作者： Fan-Xiao Meng Xing-Yu Wang Ka Lu Ju-Song Yang Fu-Min Zhang ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

关键词： benzofuran atropisomers novel de novo synthetic strategy asymmetric formal [3 + 2] cycladdition Cu/SPDO complex DFT calculations

The interaction between KIF21A and KANK1 regulates dendritic morphology and synapse plasticity in neurons

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Neural Regeneration Research 2025年第1期20卷 209-223页

作者： Shi-Yan Sun Lingyun Nie Jing Zhang Xue Fang Hongmei Luo Chuanhai Fu Zhiyi Wei ai-Hui Tang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Brain Function and DiseaseMinistry of Education Key Laboratory for Membrane-less Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina CAS Center for Excellence in Molecular Cell Sciences Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Neurobiology School of Life SciencesSouthern University of Science and TechnologyShenzhenGuangdong ProvinceChina Brain Research Center Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina

Morphological alterations in dendritic spines have been linked to changes in functional communication between neurons that affect learning and ***-4 KIF21A helps organize the microtubule-actin network at the cell cortex by interacting with KANK1;however,whether KIF21A modulates dendritic structure and function in neurons remains *** this study,we found that KIF21A was distributed in a subset of dendritic spines,and that these KIF21A-positive spines were larger and more structurally plastic than KIF21A-negative ***,the interaction between KIF21A and KANK1 was found to be critical for dendritic spine morphogenesis and synaptic *** of either KIF21A or KANK1 inhibited dendritic spine morphogenesis and dendritic branching,and these deficits were fully rescued by coexpressing full-length KIF21A or KANK1,but not by proteins with mutations disrupting direct binding between KIF21A and KANK1 or binding between KANK1 and *** down KIF21A in the hippocampus of rats inhibited the amplitudes of long-term potentiation induced by high-frequency stimulation and negatively impacted the animals’cognitive *** together,our findings demonstrate the function of KIF21A in modulating spine morphology and provide insight into its role in synaptic function.

关键词： actin cytoskeleton dendrite KANK1 KIF21A microtubule spine morphology spine synaptic plasticity talin1

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