A clot waveform analysis-based system for differential diagnosis of prolonged activated partial thromboplastin time in plasma samples.

Introduction: Prolonged activated partial thromboplastin time (aPTT) in plasma samples requires quick and accurate differential diagnosis. We developed two methods using clot waveform analysis (CWA) for plasma samples with prolonged aPTT, particularly for factor (F)VIII deficiency. One method estimates FVIII activity (FVIII:C) using CWA without measuring FVIII:C by template matching.

Food odor perception promotes systemic lipid utilization.

Food cues during fasting elicit Pavlovian conditioning to adapt for anticipated food intake. However, whether the olfactory system is involved in metabolic adaptations remains elusive. Here we show that food-odor perception promotes lipid metabolism in male mice.

The balance of comprehensive coagulation and fibrinolytic potential is disrupted in patients with moderate to severe COVID-19.

Coagulation and fibrinolytic mechanisms are enhanced in patients with coronavirus (COVID-19), but disturbances in the balance of both functions in COVID-19 patients remain unclear. We assessed global coagulation and fibrinolysis in plasma from 167 COVID-19 patients (mild/moderate/severe: 62/88/17, respectively) on admission using clot-fibrinolysis waveform analysis (CFWA). Maximum coagulation velocity (|min1|) and maximum fibrinolysis velocity (|FL-min1|) were expressed as ratios relative to normal plasma.

LY6D-induced macropinocytosis as a survival mechanism of senescent cells.

Although senescent cells display various morphological changes including vacuole formation, it is still unclear how these processes are regulated. We have recently identified the gene, lymphocyte antigen 6 complex, locus D (LY6D), to be upregulated specifically in senescent cells. LY6D is a glycosylphosphatidylinositol-anchored cell-surface protein whose function remains unknown.

Proline dehydrogenase promotes senescence through the generation of reactive oxygen species.

Cellular senescence is a complex stress response characterized by permanent loss of proliferative capacity and is implicated in age-related disorders. Although the transcriptional activity of p53 (encoded by ) is known to be vital for senescence induction, the downstream effector genes critical for senescence remain unsolved. Recently, we have identified the proline dehydrogenase gene () to be upregulated specifically in senescent cells in a p53-dependent manner, and the functional relevance of this to senescence is yet to be defined.

Identification of cellular senescence-specific genes by comparative transcriptomics.

Cellular senescence is defined as permanent cell cycle arrest induced by various stresses. Although the p53 transcriptional activity is essential for senescence induction, the downstream genes that are crucial for senescence remain unsolved. Here, by using a developed experimental system in which cellular senescence or apoptosis is induced preferentially by altering concentration of etoposide, a DNA-damaging drug, we compared gene expression profiles of senescent and apoptotic cells by microarray analysis.

A novel organobismuth compound, 1-[(2-di-p-tolylbismuthanophenyl)diazenyl]pyrrolidine, induces apoptosis in the human acute promyelocytic leukemia cell line NB4 via reactive oxygen species.

A novel organobismuth compound, 1-[(2-di-p-tolylbismuthanophenyl)diazenyl]pyrrolidine (4), which has 1-(phenyldiazenyl)pyrrolidine (1) substituent in a benzene ring of tri(p-tolyl)bismuthane (2), was synthesized and tested for biological activity toward human tumor cell lines. 4 had a potent anti-proliferative effect on human cancer cell lines, although both 1 and 2 exhibited only weak activity. The sensitivity of leukemic cell lines to 4 was relatively high; IC(50) values for the human leukemia cell line NB4 and cervical cancer cell line HeLa were 0.