A group of temperate grassland plant species termed the "Mansen elements" occurs in Japan and is widely distributed in the grasslands of continental East Asia. It has been hypothesized that these species are continental grassland relicts in Japan that stretch back to a colder age, but their migration history has not been elucidated. To assess the migration history of the Mansen elements, we performed phylogeographic analyses of Tephroseris kirilowii, a member of this group, using single-nucleotide polymorphisms (SNPs) obtained from multiplexed inter-simple sequence repeat genotyping by sequencing (MIG-seq).
View Article and Find Full Text PDFBackground And Aims: Artemisia is a mega-diverse genus consisting of ~400 species. Despite its medicinal importance and ecological significance, a well-resolved phylogeny for global Artemisia, a natural generic delimitation and infrageneric taxonomy remain missing, owing to the obstructions from limited taxon sampling and insufficient information on DNA markers. Its morphological characters, such as capitulum, life form and leaf, show marked variations and are widely used in its infrageneric taxonomy.
View Article and Find Full Text PDFJ Toxicol Pathol
January 2022
We analyzed the histopathological changes and the number of motor neurons (MNs) in the lumbar spinal cord of Cu/Zn superoxide dismutase transgenic (SOD1Tg) mice, which are frequently used as a disease model of amyotrophic lateral sclerosis (ALS). In SOD1Tg mice, hyaline inclusions and foamy vacuoles in the neuronal cell body were observed at 7 weeks of age before neurologic symptoms, and large vacuoles, spheroid formation, and nerve cell aggregation became prominent after 13 weeks of age. The number of healthy MNs was 28.
View Article and Find Full Text PDFTo elucidate the origin and migration history of the "Mansen elements," a group of temperate grassland plants mainly distributed in northeastern Asia, phylogeographic analyses based on chloroplast DNA markers and double-digest restriction site-associated DNA sequencing (ddRAD-seq) data were performed on Viola orientalis, one of the representative species of the group. Phylogenetic analyses using ddRAD-seq data revealed that the populations of V. orientalis were clustered into five clades, among which the continental clades made of populations from Russia and Korea diverged more than 100,000 years earlier than the Japanese clades.
View Article and Find Full Text PDFSurvivin belongs to the inhibitor of apoptosis protein family, which is consistently overexpressed in most cancer cells but rarely expressed in normal adult tissues. Therefore, the detection and inhibition of survivin are regarded as attractive strategies for cancer-specific treatment. In this study, we designed and synthesized 7-19 residues of inner centromere protein (INCENP)-derived small peptides (INC peptides) as novel survivin-targeting agents.
View Article and Find Full Text PDFBackground And Aims: Domatia are plant structures within which organisms reside. Callicarpa saccata (Lamiaceae) is the sole myrmecophyte, or 'ant plant', that develops foliar (leaf-borne) myrmeco-domatia in this genus. In this work we examined domatium development in C.
View Article and Find Full Text PDFPatient Prefer Adherence
October 2019
Introduction: Regorafenib is an oral multikinase inhibitor for the treatment of metastatic colorectal cancer (mCRC). The clinical factors that may affect adherence to regorafenib remain unclear. The aim of this study was to evaluate adherence to regorafenib with mCRC and to identify factors that might affect adherence to regorafenib.
View Article and Find Full Text PDFThe genetic diversity and structure of a continental-grassland relict, were investigated using variations in chloroplast DNA (cpDNA) and microsatellites of nuclear DNA. In the analyses of three cpDNA regions, 17 haplotypes were found in 24 populations of from Japan, Korea, and Russia. Although the route and time of migration between the continent of Asia and Japan could not be well resolved, the cpDNA haplotype network suggests the existence of several ancient lineages in Japan and a recent secondary migration from Japan to the continent.
View Article and Find Full Text PDFTokai J Exp Clin Med
December 2018
Objective: Because of the shape of a double-lumen tube (DLT), it is more difficult to use for intubation than an ordinary endotracheal tube. We prospectively investigated the usefulness of the Airtraq DL attached to the Universal Adapter for Smartphones for DLT intubation.
Method: At Tokai University Hachioji Hospital, anesthesiologists with ≥ 5 years' clinical experience intubated a tracheal intubation training mannequin with DLTs using the Airtraq DL (Airtraq-alone phase) and the Airtraq DL attached to the Universal Adapter for Smartphones (adapter phase), and the time required was measured.
The genus Stevia comprises approximately 200 species, which are distributed in North and South America, and are representative of the species diversity of the Asteraceae in the New World. We reconstructed the phylogenetic relationships using sequences of ITS and cpDNA and estimated the divergence times of the major clade of this genus. Our results suggested that Stevia originated in Mexico 7.
View Article and Find Full Text PDFA new species, Callicarpa bachmaensis Soejima & Tagane, sp. nov., is described and illustrated from Bach Ma National Park in Thua Thien Hue Province, Central Vietnam.
View Article and Find Full Text PDFA tropical small tree, Callicarpa saccata, is known to have a symbiotic relationship with ants. It has sac-like structures at the base of the leaves that are inhabited by ants. No other species has been determined to be a myrmecophyte among the ca.
View Article and Find Full Text PDFAdult T-cell leukemia-lymphoma (ATL) shows global gene expression alterations that confer cellular characteristics and unfavorable prognosis. However, molecular mechanisms of the sustained expression changes are largely unknown, because there is no study addressing the relationship between landscapes of the gene expression and epigenetic modifications. Here, we analyzed ATL epigenome and integrated it with transcriptome from primary ATL cells and those from corresponding normal CD4(+)T cells to decipher ATL-specific "epigenetic code" that was critical for cell identity.
View Article and Find Full Text PDFAims: Human mercaptalbumin (HMA) acts as a covalent-carrier protein for sulfur-containing amino acids, cysteine, and glutathione. In addition, its sulfhydryl residue reacts with peroxyl radicals. In this study, we evaluated the redox state of human serum albumin and its relationship with serum amino thiol levels in non-diabetic chronic kidney disease (CKD) patients with various degrees of renal function.
View Article and Find Full Text PDFA novel series of pyrrolidine derivatives as Na(+) channel blockers was synthesized and evaluated for their inhibitory effects on neuronal Na(+) channels. Structure-activity relationship (SAR) studies of a pyrrolidine analogue 2 led to the discovery of 5e as a potent Na(+) channel blocker with a low inhibitory action against human ether-a-go-go-related gene (hERG) channels. Compound 5e showed remarkably neuroprotective activity in a rat transient middle cerebral artery occlusion (MCAO) model, suggesting that 5e would act as a neuroprotectant for ischemic stroke.
View Article and Find Full Text PDFDipeptidyl peptidase IV (DPP-4) inhibition is suitable mechanism for once daily oral dosing regimen because of its low risk of hypoglycemia. We explored linked bicyclic heteroarylpiperazines substituted at the γ-position of the proline structure in the course of the investigation of l-prolylthiazolidines. The efforts led to the discovery of a highly potent, selective, long-lasting and orally active DPP-4 inhibitor, 3-[(2S,4S)-4-[4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazin-1-yl]pyrrolidin-2-ylcarbonyl]thiazolidine (8 g), which has a unique structure characterized by five consecutive rings.
View Article and Find Full Text PDFIn investigating potent sodium (Na(+)) channel blockers for the treatment of ischemic stroke, we synthesized a novel series of 3-amino-1-(5-indanyloxy)-2-propanol derivatives and evaluated their inhibitory effects on neuronal Na(+) channels. The 3-amino-1-(5-indanyloxy)-2-propanol derivatives exhibited potent blocking activity for Na(+) channels and a significantly low affinity for dopamine D(2) receptors, which demonstrates a minimal clinical risk for extrapyramidal side effects. In particular, compound 4b, a 3-amino-1-(5-indanyloxy)-2-propanol derivative bearing a benzimidazole moiety, showed desirable neuroprotective activity in a rat transient middle cerebral artery occlusion model.
View Article and Find Full Text PDFPremise Of The Study: Biogeographic analyses of ferns with an eastern Asian-North American disjunction are few. The Adiantum pedatum complex has such a disjunct distribution. The monophyly of the complex needs to be tested and diversification history of the four species needs to be reconstructed.
View Article and Find Full Text PDFWe examined the relationship between change in the redox state of the plasma albumin molecule and the metabolic disorder of sulfur amino acid observed being accompanied by reduction of renal function. Thirty-seven cases of pre-dialysis renal failure with conservative treatment and thirteen cases of chronic hemodialysis were selected as the subjects of this examination. The fraction of plasma albumin and the concentration of plasma cysteine and homocysteine were respectively measured by the HPLC and GC/MS (gas chromatography/mass spectrometry) methods.
View Article and Find Full Text PDFCurrent conventional measurement of allantoin levels in human serum uses an HPLC method. However, performing this assay is time-consuming and sample-intensive, and it requires expensive equipment. We have developed a novel enzyme cycling method for measuring allantoin concentrations in human serum.
View Article and Find Full Text PDFJ Chromatogr B Analyt Technol Biomed Life Sci
July 2008
Individual variability of the pharmacokinetics of prednisolone based on the unbound concentration in plasma is of significant clinical consideration. The unbound concentrations of prednisolone were measured in 10 patients with nephrotic syndrome, two patients with systemic lupus erythematosus, and one patient with dermatomyositis by examining protein bindings of prednisolone on one or more occasions during prednisolone treatment. In this study, plasma concentrations of prednisolone, prednisone, cortisol, and cortisone were simultaneously analyzed by GC-MS by using stable isotope-labeled internal standards.
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