Yasuhiro Takikawa

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AIM   Carnosic acid (CA) inhibits adipogenesis in vitro. The present study evaluated the therapeutic effects of CA in ob/ob mice. METHODS   The experimental animals were given a standard chow diet with or without CA for 5 weeks. Bodyweight gain and food intake were measured during this period. Magnetic resonance imaging analysis, histological examination,(More)
Among 87 patients who were previously treated for acute hepatitis of unknown etiology between 1992 and 2001 at five hospitals in Japan, 11 (13%) patients were positive for immunoglobulin M-class antibodies to hepatitis E virus (HEV) by enzyme immunoassay and had detectable HEV RNA by reverse transcription-PCR with two independent sets of primers derived(More)
The liver is a unique organ with a remarkably high potential to regenerate upon injuries. In severely damaged livers where hepatocyte proliferation is impaired, facultative liver progenitor cells (LPCs) proliferate and are assumed to contribute to regeneration. An expansion of LPCs is often observed in patients with various types of liver diseases. However,(More)
We report a case of primary hepatic lymphoma in a 55-yr-old female patient with primary biliary cirrhosis and Sjögren's syndrome. On July 1994, a tumor measuring 11 mm in diameter was detected in the right lobe of the liver by abdominal ultrasonography. A needle biopsy specimen showed the lesion to contain small- and medium-sized lymphoid cells without(More)
In the previous studies, we reported that carnosic acid (CA) and carnosol (CS) originating from rosemary protected cortical neurons by activating the Keap1/Nrf2 pathway, which activation was initiated by S-alkylation of the critical cysteine thiol of the Keap1 protein by the "electrophilic"quinone-type of CA or CS. Here, we found that CA and CS inhibited(More)
BACKGROUND The aim of the present study was to examine the safety and efficacy of endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) based on the long-term outcomes. PATIENTS AND METHODS From June 2002 to March 2007, ESD was carried out in 472 cases and 570 lesions of EGC. Post-surgical cases and status-unknown cases were excluded. The(More)
AIM To use leptin-deficient (ob/ob) mice with demonstrated differences in steatosis levels to test a new diagnostic method using the acoustical structure quantification (ASQ) mode and the associated analytical parameter, "focal disturbance ratio" (FD-ratio). METHODS Nine ob/ob mice, at 5, 8, and 12 wk of age (n = 3 in each age group), were used as models(More)
We compared acute hepatitis E (AH-E) and acute hepatitis A (AH-A) to investigate the epidemiology, clinical features, and prognosis of AH-E caused by an indigenous hepatitis E virus (HEV) in Japan. We enrolled 58 patients diagnosed with AH-A or AH-E (32 men and 26 women; age, 20–72 years) from December 1997 to October 2002. Phylogenetic analysis of the(More)
UNLABELLED The proportion of patients who progress to chronicity following acute hepatitis B (AHB) varies widely worldwide. Moreover, the association between viral persistence after AHB and hepatitis B virus (HBV) genotypes in adults remains unclear. A nationwide multicenter study was conducted throughout Japan to evaluate the influence of clinical and(More)
AIMS Epidermal growth factor receptor (EGFR) transactivation induced by angiotensin II (Ang II) participates in the progression of various diseases. A disintegrin and metalloproteinase 17 (ADAM17) is thought to promote renal fibrosis, cardiac hypertrophy with fibrosis and atherosclerosis by activation of the EGFR through secretion of EGFR ligands. The(More)