Publications by authors named "Ken-ichi Komatsu"

Background/aim: We examined the inhibitory effect of mulberry leaf (ML) (Morus alba L.) administration on the development of hepatocellular carcinoma (HCC) in stelic animal model (STAM) mice. This STAM mouse model of nonalcoholic steatohepatitis (NASH) closely resembles the progression from NASH to HCC in human clinical practice.

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Background/aim: We investigated the effect of Kumaizasa leaf extract (KLE) on innate immunity using the HEK293 and RAW 264.7 cell lines.

Materials And Methods: KLE, lipopolysaccharides (LPS), or KLE with LPS were added to RAW 264.

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Disturbed activation of autophagy is implicated in the pathogenesis of inflammatory bowel disease. Accordingly, several autophagy-related genes have been identified as Crohn's disease susceptibility genes. We screened the autophagy activators from a library including 3,922 natural extracts using a high-throughput assay system.

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Background/aim: Mulberry (Morus alba L.) leaves (ML) contain many functional components, such as 1-deoxynojirimycin, flavonoids (rutin, quercetin, kaempferol). It is well known that 1-deoxynojirimycin functions to suppress increases in blood glucose level by α-glucosidase inhibitory activity.

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Background/aim: Senescence marker protein-30/gluconolactonase knockout mice (SMP-30/GNL-KO) are a very useful model for clarifying the involvement of vitamin C (VC) in aging-related diseases. In this study, the effects of VC deficiency on skin and hair growth were investigated using SMP-30/GNL-KO mice by RNA sequencing.

Materials And Methods: SMP-30/GNL-KO mice were given water containing 1.

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Background: Perilla (Perilla frutescens Britton) leaf comprises many types of active components, mainly flavonoids, and acts as an anti-inflammatory agent in in vitro and in vivo atopic dermatitis (AD) models.

Objective: We investigated the effects of orally administered perilla leaf extract (PLE) on the symptoms of AD induced by Dermatophagoides farinae extract (DFE) in NC/Nga AD model mice.

Methods: The mice were allowed free intake of 0.

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Background/aim: Pantoea agglomerans LPS (immunopotentiator from Pantoea agglomerans 1: IP-PA1) has been reported to have anti-inflammatory effects in in vitro and in vivo models. The aim of the present study was to investigate the effects of orally-administered IP-PA1 on atopic dermatitis (AD) symptoms induced by Dermatophagoides farinae body extract (DFE) in NC/Nga mice.

Materials And Methods: Using the NC/Nga AD murine model, mice were orally administered 0.

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The protective effects of notoginseng against hepatic damage were investigated in mice. To prepare a model animal of hepatitis, a mixture of lipopolysaccharide and galactosamine (LPS/GAlN) was administered intraperitoneally, leading to the impairment of hepatic function. Extracts of notoginseng or its components (ginsenoside Rb1 and ginsenoside Rg1) were orally administered 2 h before LPS/GalN injection.

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Effects of azelnidipine were examined and compared with those of amlodipine on stunned myocardium in dogs. The left anterior descending (LAD) coronary artery was ligated for 20 min and subsequently released for 60 min. A vehicle, azelnidipine (0.

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Kamisyoyosan (KSS) and Tokisyakuyakusan (TSS) are widely used herbal formulas in Japanese traditional kampo medicine to relieve the symptoms occurred in climacteric disturbance. Since Japanese physicians frequently prescribe these formulas combined with etizolam, one of benzodiazepine anxiolytics, we evaluated the pharmacokinetic interaction between KSS or TSS and etizolam, and in vitro inhibitory effect of KSS and TSS on rat cytochrome P450 (CYP) 3A activity in rat microsomes, to obtain drug information to prevent from disadvantage or adverse effects by their combined therapy. In in vitro experiment, KSS and TSS inhibited CYP3A activity comparable to grapefruit juice.

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Sho-seiryu-to (SST) is widely used herbal formula in Japanese traditional medicine (kampo) to treat allergic diseases. Since Japanese physicians frequently prescribe this formula combined with azelastine hydrochloride, one of anti-histamine and anti-allergic medicines, we evaluated the pharmacokinetic interactions between SST and azelastine hydrochloride in rats to obtain the drug information for the prevention from disadvantage or adverse effects by their combined therapy. Oral administration of SST did not influence the plasma concentration profile of azelastine after its intravaneous injection, suggesting that SST would not change the activities of metabolic enzymes such as cytochrome P450s.

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