Publications by authors named "Katsuhiko Hasegawa"

Background: Obstructive sleep apnea (OSA) has been suggested as an independent risk factor for nonalcoholic fatty liver disease (NAFLD), and continuous positive airway pressure (CPAP) is the first-line therapy for OSA.

Aim: To clarify the efficacy of effective CPAP therapy on NAFLD of OSA patients by serum markers and transient elastography (TE) using FibroScan (Echosens, Paris, France).

Methods: We prospectively enrolled 123 consecutive patients with OSA who met the indications for CPAP.

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Fatty infiltration of liver may induce insulin resistance (IR), and a proportion of patients with nonalcoholic fatty liver disease (NAFLD) is diagnosed with nonalcoholic steatohepatitis. Transient elastography is gaining popularity as a means of non-invasively determining both liver stiffness (fibrosis level) and degree of fatty infiltration, expressed as controlled attenuation parameter (CAP) value. The aims of this study were to investigate the association between IR and level of fatty liver, and to identify the group at a greater risk of nonalcoholic steatohepatitis using transient elastography and other noninvasive fibrosis markers.

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BACKGROUND Ulcerative colitis (UC) is a chronic inflammatory bowel disease, affecting the colon continuously from the rectum proximally. However, a clinical type with right-sided colitis sparing the anal side of the colon is also known. Mesalamine, which is generally used to treat UC, can rarely aggravate the disease.

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Acute liver failure is a refractory disease and its prognosis, if not treated using liver transplantation, is extremely poor. It is a good candidate for regenerative medicine, where stem cell-based therapies play a central role. Mesenchymal stem cells (MSCs) are known to differentiate into multiple cell lineages including hepatocytes.

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The fibrosis of liver cirrhosis was considered to be irreversible before the anti-viral drugs showed that it is reversible when they lead to continuous suppression of viral replication and inflammation. However, several reports previously showed that fibrosis of type B liver cirrhosis was almost completely absorbed after the natural remission of chronic inflammation. This phenomenon might not be limited to exceptional patients, but rather occur commonly, considering the dynamic clinical features of chronic hepatitis B (CHB), where inactive carrier stage normally follows aggravation of hepatitis and progression of fibrosis at the time of HBeAg seroconversion.

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Transgenic mouse technology has enabled the investigation of the pathogenic effects, including those on development, immunological reactions and carcinogenesis, of viral genes directly in living organism in a real-time manner. Although viral hepatocarcinogenesis comprises multiple sequences of pathological events, that is, chronic necroinflammation and the subsequent regeneration of hepatocytes that induces the accumulation of genetic alterations and hepatocellular carcinoma (HCC), the direct action of viral proteins also play significant roles. The pathogenesis of hepatitis B virus X and hepatitis C virus (HCV) core genes has been extensively studied by virtue of their functions as a transactivator and a steatosis inducer, respectively.

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Ulcerative colitis (UC) is an immune disorder of the gastrointestinal tract which has been reported to be precipitated by interferon (IFN) therapy. We describe the results of a literature review of cases in which the development or exacerbation of UC was coincident with IFN and/or ribavirin (RIB) treatment for chronic hepatitis C. We summarized the studies on the effectiveness of IFN for UC or Crohn's disease, which were primarily carried out in Europe and the USA.

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A 75-year-old female, who had an abnormal stomach x-ray finding, was admitted to the hospital for further examination and therapy. Upper GI endoscopy showed reddish and swollen folds on the greater curvature of the gastric body and a biopsy was of this lesion revealed malignant lymphoma (small cell type or mucosa-associated lymphoid tissue (MALT) lymphoma suspected). The patient was infected with Helicobacter pylori (H.

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A 64-year-old man who had been given a diagnosis of idiopathic chronic cold agglutinin disease in a medical clinic suffered from Raynaud's phenomenon and acrocyanosis in winter. He was admitted to our hospital with unbearable abdominal pain. Blood tests showed liver dysfunction with jaundice and severe acidosis.

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As a result of having undergone computed tomography (CT), a 75-year-old woman with type-C liver cirrhosiswas shown to have two tumors on the ventral and dorsal sides of subsegment 3 (S3). The tumor on the ventral side was diagnosed as a classic hepatocellular carcinoma (HCC), while that on the dorsal side was considered atypical for a HCC. Although the indocyanine green (ICG) findings indicated poor hepatic reserve, the prothrombin time (PT) was relatively good.

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A 59-year-old man diagnosed as gastric cancer with peritonitis carcinomatosa was treated with paclitaxel and TS-1; 60 mg/m(2)/day of paclitaxel was given on days 1 and 8, and 60-80 mg/m(2)/day of TS-1 was given for 2 weeks. Six courses of combination therapy were administered, and the ascites disappeared completely. Because multiple bone metastases occurred, we attempted combination therapy with cisplatin and irinotecan hydrochloride; 50 or 30 mg/m(2)/day of cisplatin was given on day 1 or day 15, and 70 mg/m(2)/day of irinotecam hydrochloride was given on days 1 and 15.

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Aim: To characterize the clinical features of hepatocellular carcinoma (HCC) associated with autoimmune liver disease, we critically evaluated the literature on HCC associated with autoimmune hepatitis (AIH) and primary biliary cirrhosis (PBC).

Methods: A systematic review of the literature was conducted using the Japana Centra Revuo Medicina database which produced 38 cases of HCC with AIH (AIH-series) and 50 cases of HCC with PBC (PBC-series). We compared the clinical features of these two sets of patients with the general Japanese HCC population.

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A 65-year-old woman with liver injury was referred to our hospital in 1992. She was diagnosed with primary biliary cirrhosis (PBC) of Scheuer's histological classification stage IV. She was treated with 600 mg/day of ursodeoxycholic acid.

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A 60-year-old man, who had been admitted to another hospital with complaints of constipation, abdominal fullness and appetite loss, was referred to our hospital for further examination and therapy. The patient was diagnosed as advanced gastric cancer (type-3) with multiple liver metastasis and obstructive jaundice. He was treated with combination therapy of paclitaxel and TS-1 (60 mg/m(2)/day of paclitaxel was iv administered on day 1 and 8, and TS-1 of 80 mg/m(2)/day was orally administered for 2 weeks followed by one drug-free week), and showed a remarkable response.

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A 55-year-old man with chronic hepatitis C had diarrhea with bloody stool in July, 2003 and ulcerative colitis was suspected. However, he quickly improved. He was treated with percutaneous radiofrequency ablation therapy for adenomatous hyperplasia in S5 of the liver in December, 2004.

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