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Dive into the research topics where Hiroaki Nagamatsu is active.

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Featured researches published by Hiroaki Nagamatsu.


Hepatology Research | 2003

Investigation of associating factors in exacerbation of liver damage after chemotherapy in patients with HBV-related HCC

Hiroaki Nagamatsu; Ryukichi Kumashiro; Satoshi Itano; Satoru Matsugaki; Michio Sata

BACKGROUND/AIMS: Flare-up of hepatitis due to the reactivation of hepatitis B virus (HBV) is a well-known complication in patients with malignant disease who receive chemotherapy. Despite the widespread use of chemotherapy for patients with HBV-related hepatocellular carcinoma (HCC), there is little corresponding data on exacerbation of liver damage in these patients. In the present study, we investigated the associating factors in exacerbation of liver damage in patients with HBV-related HCC who were undergoing trans-hepatic arterial infusion chemotherapy (THAIC). PATIENTS AND METHODS: Thirty-three patients who received THAIC for HCC were investigated. All patients were hepatitis B surface antigen positive. Hepatitis e antigen and antibody were generally tested at baseline and within 1 month of final chemotherapy. Serum alanine aminotransferase, asparate aminotransferase, albumin, total bilirubin, and prothrombin time were estimated once a week or every 2 weeks. HBV-DNA levels were measured at baseline and once a month. Mutation in the regions of precore and core promoter in HBV DNA was generally estimated at baseline and within 1 month of final chemotherapy. RESULTS: Eight patients with hepatitis Be antigen positive and hepatitis Be antibody negative at baseline were found to have exacerbation of liver damage during or after chemotherapy. Of these, three patients died of progressive liver failure. There was no association between exacerbation of liver damage and age, sex, hepatic reserve function, HBV-DNA levels, precore and core promoter sequencing, therapeutic regimen, or tumor stage. The only associating factor was HBeAg positivity. CONCLUSIONS: These results suggest that hepatitis B e antigen positivity is a significant associating factor in exacerbation of liver damage during or after chemotherapy in patients with HBV-related HCC.


The American Journal of Gastroenterology | 2004

Prophylactic Lamivudine Administration Prevents Exacerbation of Liver Damage in HBe Antigen Positive Patients with Hepatocellular Carcinoma Undergoing Transhepatic Arterial Infusion Chemotherapy

Hiroaki Nagamatsu; Satoshi Itano; Sakae Nagaoka; Junji Akiyoshi; Satoru Matsugaki; Junichi Kurogi; Nobuyoshi Tajiri; Sanki Yamasaki; Hironori Koga; Takuji Torimura; Ryukichi Kumashiro; Michio Sata

BACKGROUND AND AIMS:Exacerbation of liver damage during transhepatic arterial infusion chemotherapy (THAIC) is a critical complication in patients with hepatitis B virus (HBV) related hepatocellular carcinoma (HCC). We previously reported that HBe antigen positivity was the associating factor for the exacerbation of liver damage. In the present study, we investigated the effect of lamivudine administration for exacerbation of liver damage in such patients.PATIENTS AND METHODS:Seventeen patients with HBV-related hepatocellular carcinoma who received THAIC were reviewed. Eight of these patients received lamivudine administration. Nine patients did not receive lamivudine administration. All patients were HBe antigen positive. Liver function tests, liver enzymes, HBV-DNA levels, HBe antigen, HBe antibody, and mutation in the precore and core-promoter regions of HBV DNA were evaluated.RESULTS:In the lamivudine-treated group, HBV-DNA levels were significantly reduced and did not increase throughout chemotherapy. Lamivudine did not induce any changes in precore or core-promoter regions. Although levels of alanine aminotransferase (ALT), asparate aminotransferase (AST), total bilirubin, and prothrombin time (PT) in the lamivudine-treated group did not change, levels of ALT, AST and total bilirubin increased, and PT were prolonged in the untreated group by chemotherapy. No patients receiving lamivudine administration showed exacerbation of liver damage. Exacerbation of liver damage was detected in six patients without lamivudine administration. Of these, three patients died of progressive liver failure due to reactivation of HBV.CONCLUSION:These results indicate that prophylactic lamivudine administration reduces HBV-DNA levels and prevents exacerbation of liver damage throughout the period of chemotherapy in HBe antigen positive patients with hepatocellular carcinoma.


Oncology | 2013

Efficacy, Safety, and Survival Factors for Sorafenib Treatment in Japanese Patients with Advanced Hepatocellular Carcinoma

Masahito Nakano; Masatoshi Tanaka; Ryoko Kuromatsu; Hiroaki Nagamatsu; Kenji Sakata; Satoru Matsugaki; Masahiko Kajiwara; Kunitaka Fukuizumi; Nobuyoshi Tajiri; Norito Matsukuma; Terufumi Sakai; Noriyuki Ono; Yoichi Yano; Hironori Koga; Junichi Kurogi; Akio Takata; Shuji Sumie; Manabu Satani; Shingo Yamada; Takashi Niizeki; Hajime Aino; Hideki Iwamoto; Takuji Torimura; Michio Sata

Background: Sorafenib, an oral multikinase inhibitor, was approved for the treatment of advanced hepatocellular carcinoma (HCC), but has not been adequately evaluated for safety and effectiveness in Japanese patients with advanced HCC. Aims: The purpose of this study was to prospectively assess the efficacy, safety, and risk factors for survival in patients with advanced HCC treated with sorafenib. Methods: Between May 2009 and December 2010, 96 Japanese patients with advanced HCC (76 male, 20 female, mean age: 70.4 years) were treated with sorafenib. Eighty-eight patients had Child-Pugh class A, and 8 patients had Child-Pugh class B liver cirrhosis. Barcelona Clinic Liver Cancer stage B and C were found in 64 and 32 patients, respectively. Results: Twelve patients demonstrated partial response to sorafenib therapy, 43 patients had stable disease, and 33 patients had progressive disease at the first radiologic assessment. The most frequent adverse events leading to discontinuation of sorafenib treatment were liver dysfunction (n = 8), hand-foot skin reaction (n = 7), and diarrhea (n = 4). The median survival time and time to progression were 11.6 and 3.2 months, respectively. By multivariate analysis, des-γ-carboxy prothrombin serum levels and duration of treatment were identified as independent risk factors for survival. Conclusions: This study showed that sorafenib was safe and useful in Japanese patients with advanced HCC. In addition, this study demonstrated that sorafenib should be administered as a long-term treatment for advanced HCC regardless of therapeutic effect and dosage.


Cancer Medicine | 2015

Sorafenib for the treatment of advanced hepatocellular carcinoma with extrahepatic metastasis: a prospective multicenter cohort study

Masahito Nakano; Masatoshi Tanaka; Ryoko Kuromatsu; Hiroaki Nagamatsu; Nobuyoshi Tajiri; Manabu Satani; Takashi Niizeki; Hajime Aino; Shusuke Okamura; Hideki Iwamoto; Shigeo Shimose; Tomotake Shirono; Hironori Koga; Takuji Torimura

Sorafenib, an oral multikinase inhibitor, is approved for advanced hepatocellular carcinoma (HCC) treatment. However, its therapeutic effect in advanced HCC patients with extrahepatic metastasis remains uncertain. This study aimed to prospectively assess the efficacy, safety, and survival risk factors and evaluate the prognostic impact of sorafenib treatment in advanced HCC patients with or without extrahepatic metastasis. Between May 2009 and March 2014, 312 consecutive advanced HCC patients who received sorafenib were enrolled in this study. We evaluated their characteristics and compared the clinical outcomes of those with and without extrahepatic metastasis. Of the enrolled patients, 245 (81%) received sorafenib treatment for more than 1 month, with a median duration of 3.6 months. Eighteen patients demonstrated partial response to sorafenib therapy, 127 had stable disease, and 134 had progressive disease at the first radiologic assessment. The median survival time (MST) and progression‐free survival (PFS) were 10.3 and 3.6 months, respectively. Multivariate analysis identified gender, Child‐Pugh class, baseline serum des‐gamma‐carboxy prothrombin level, and treatment duration as independent risk factors for survival. Extrahepatic metastasis was detected in 178 patients. However, the MST, PFS, and therapeutic effect were comparable between patients with and without extrahepatic metastasis. The independent risk factors for decreased overall survival in patients with extrahepatic metastasis were similar to those affecting all patients. Our results indicated that sorafenib could be administered for hepatic reserve and as long‐term treatment for advanced HCC patients regardless of their extrahepatic metastasis status.


Journal of Gastroenterology | 1999

Polyarteritis nodosa with mesenteric aneurysms demonstrated by angiography: report of a case and successful treatment of the patient with prednisolone and cyclophosphamide

Masaru Harada; Hiroshi Yoshida; Hideo Ikeda; Takafumi Yoshida; Hidetoshi Takedatsu; Hiroaki Nagamatsu; Kenshi Koga; Yuko Fujisawa; Masaharu Sakamoto; Kazuhiro Fujisaki; Shotaro Sakisaka; Kiyoshi Yasumoto; Atsushi Toyonaga; Michio Sata

Abstract: Polyarteritis nodosa is a necrotizing angitis that predominantly affects small and medium-sized arteries. The prognosis of untreated polyarteritis nodosa is very poor. Since symptoms are diverse and no serologic test is specific for polyarteritis nodosa, the diagnosis is difficult and often delayed. We describe a patient with polyarteritis nodosa who had gastrointestinal involvement with multiple aneurysms of the inferior mesenteric artery; only abdominal angiography provided a conclusive diagnosis. Alleviation of symptoms and regression of aneurysms were observed after combination therapy of an immunosuppressive agent, cyclophosphamide, and prednisolone. We emphasize the importance of early diagnosis by angiography and aggressive therapy in patients in whom physical signs indicating definite polyarteritis nodosa are not present.


Acta Haematologica | 2006

Simultaneous Hepatic Relapse of Non-Hodgkin’s Lymphoma and Hepatocellular Carcinoma in a Patient with Hepatitis C Virus-Related Cirrhosis

Korenori Ohtsubo; Eijiro Oku; Rie Imamura; Ritsuko Seki; Michitoshi Hashiguchi; Koichi Osaki; Kazuaki Yakushiji; Kohji Yoshimoto; Hideaki Ogata; Hiroaki Nagamatsu; Eiji Ando; Kazuhide Shimamatsu; Takashi Okamura; Michio Sata

We report a 66-year-old man with hepatitis C virus (HCV)-related cirrhosis and simultaneous hepatic relapse of non-Hodgkin’s lymphoma (NHL) and of hepatocellular carcinoma (HCC). Although the liver is frequently involved by NHL, hepatic colocalization of NHL and HCC is rarely detected by imaging techniques. HCV has been suggested to be lymphotrophic as well as hepatotrophic, and therefore has attracted speculation about a causative role in some cases of lymphoma. The patient had a past history of cutaneous diffuse large B cell lymphoma (DLBCL) in concurrence with HCC 32 months previously. Complete remission (CR) had been maintained for both diseases until February 2004, when ultrasonography and computed tomography (CT) showed multiple liver tumors. Two of these, appearing hyperattenuating in the arterial phase of contrast-enhanced CT, were diagnosed histopathologically as HCC, and treated with radiofrequency ablation. The other tumors, hypoattenuating in the portal phase CT, were diagnosed histopathologically as DLBCL, and treated with cyclophosphamide, tetrahydropyranyl-Adriamycin, vincristine and prednisolone (THP-COP) in combination with rituximab. CR was achieved for both DLBCL and HCC. Given the previously demonstrated immune system tropism and perturbation by HCV, the virus might have contributed to the occurrence of the NHL as well as the HCC.


Molecular and Clinical Oncology | 2017

Clinical effects and safety of intra‑arterial infusion therapy of cisplatin suspension in lipiodol combined with 5‑fluorouracil versus sorafenib, for advanced hepatocellular carcinoma with macroscopic vascular invasion without extra‑hepatic spread: A prospective cohort study

Masahito Nakano; Takashi Niizeki; Hiroaki Nagamatsu; Masatoshi Tanaka; Ryoko Kuromatsu; Manabu Satani; Shusuke Okamura; Hideki Iwamoto; Shigeo Shimose; Tomotake Shirono; Yu Noda; Hironori Koga; Takuji Torimura

Although sorafenib and hepatic arterial infusion chemotherapy (HAIC) have been proven to improve prognosis in hepatocellular carcinoma (HCC) patients with macroscopic vascular invasion (MVI), the most appropriate approach remains unclear. The present multicenter, non-randomized, prospective cohort study aimed to compare the efficacy and safety of HAIC and sorafenib in patients with advanced HCC and MVI, without extra-hepatic spread (EHS) and Child-Pugh class A disease. The present study was performed between April 2008 and March 2014, and 64 HCC patients with MVI, without EHS and Child-Pugh class A disease were registered. Of these patients, 44 were treated with HAIC and 20 with sorafenib. HAIC involved cisplatin (50 mg fine powder in 5-10 ml lipiodol) and a continuous infusion of 5-fluorouracil (FU) (1,500 mg/5 days), which is referred to as new 5-FU and cisplatin therapy (NFP). The primary outcome was progression-free survival, and the secondary outcome was overall survival (OS). Clinical factors influencing OS and the therapeutic effect were identified using univariate and multivariate analyses. There were no differences in clinical factors between the two groups. The median progression-free survival was 5.1 and 9.5 months in the sorafenib and NFP groups, respectively (P=0.001). The complete response (CR) or partial response (PR) rates were 10 and 71% in the sorafenib and NFP groups, respectively (P<0.001). The median OS in the sorafenib and NFP groups was 13.2 and 30.4 months, respectively (P=0.013). Multivariate analysis revealed that the independent predictors of survival were Child-Pugh score (5, P=0.022, 95% CI, 0.191-0.892), grade of portal vein invasion (brunch, P=0.009, 95% CI, 0.220-0.752), and therapeutic effect (CR or PR, P<0.001, 95% CI, 0.220-0.752), and the independent predictor of therapeutic effect was therapeutic regimen (NFP, P<0.001, 95% CI, 0.006-0.199). NFP should be the first choice for patients with advanced HCC and MVI, without EHS and Child-Pugh A disease.


American Journal of Roentgenology | 2007

Temporary indwelling catheter system via the left brachial artery: evaluation in 83 patients with hepatic tumors.

Sakae Nagaoka; Satoshi Itano; Hiroaki Nagamatsu; Junji Akiyoshi; Junichi Kurogi; Nobuyoshi Tajiri; Masahiko Kajiwara; Michio Sata

OBJECTIVE The purpose of our study was to evaluate retrospectively the usefulness and complications associated with a temporary indwelling catheter system through the brachial artery for patients with liver tumors. CONCLUSION The temporary indwelling catheter system via the left brachial artery can be used not only for CO2-enhanced sonographically guided aspiration biopsy, radiofrequency ablation, and percutaneous ethanol injection, but also for short-term hepatic arterial infusion chemotherapy and transcatheter arterial chemoembolization.


Archive | 2000

Phase II Trial of Hepatic Arterial Infusion Chemotherapy Using Cisplatin and 5-Fluorouracil in Patients with Advanced Hepatocellular Carcinoma

Masatoshi Tanaka; Eiji Ando; Sigeru Yutani; Kazuta Fukumori; Ryoko Kuromatsu; Yoshihiro Shimauchi; Hiroaki Nagamatsu; Satoshi Matsugaki; Satoshi Itano; Naohumi Ono; Shyotaroh Sakisaka; Michio Sata

We investigated the effect of hepatic artery infusion (HAI) chemotherapy on advanced hepatocellular carcinoma. Ten milligrams per hour of cisplatin for 1 h and subsequently 250mg/h for 5h of 5-fluorouracil were administered using a subcutaneously implanted vascular access device (an injection port) for 5 consecutive days followed by 2 days rest. One course consisted of repetition of the above dosage regimen for 4 weeks. We treated 77 patients with advanced hepatocellular carcinoma (HCC), excluding nodular-type tumors indicated for chemoembolization, percutaneous ethanol injection therapy, or hepatic resection. Vascular invasion was seen in 28 patients and distant metastasis was seen in 7 patients. Of patients with advanced HCC, 77% were at tumor stage IV. Ten patients (13%) had a complete response, 25 (32%) had a partial response, 30 (39%) exhibited no change, and 12 (16%) had progressive disease. The response rate was thus 46%. Estimated 1-year, 2-year, and 3-year survival by the Kaplan-Meier method in 77 patients was 56%, 28%, and 19%, respectively. According to a multivariate analysis, the effects of initial therapy (P > .0001) and the Child-Pugh grade (P = .0012) were significant prognostic factors. A survival benefit was noted in patients with portal vein invasion (1-year survival rate: 43%, 2- year survival rate: 24%) when compared with reported results, and HAI was considered to be the first choice for unresectable cases. Adverse reactions of patients were tolerable and included transient nausea, loss of appetite, and mild thrombocytopenia. In conclusion, HAI chemotherapy with the regimen described achieved favorable results, and is useful in treating patients with advanced HCC not indicating chemoembolization, hepatic resection, or ethanol injection therapy.


Oncotarget | 2016

Alternative treatments in advanced hepatocellular carcinoma patients with progressive disease after sorafenib treatment: a prospective multicenter cohort study

Masahito Nakano; Masatoshi Tanaka; Ryoko Kuromatsu; Hiroaki Nagamatsu; Manabu Satani; Takashi Niizeki; Shusuke Okamura; Hideki Iwamoto; Shigeo Shimose; Tomotake Shirono; Yu Noda; Hironori Koga; Takuji Torimura

Sorafenib is an oral multikinase inhibitor that has been approved to treat advanced hepatocellular carcinoma (HCC), though it is unclear how much benefit advanced HCC patients with progressive disease (PD) derive from sorafenib treatment. This study aimed to assess survival risk factors and evaluate therapeutic strategies for advanced HCC patients with PD after sorafenib treatment. We analyzed the clinical data and treatment outcomes for 315 consecutive advanced HCC patients treated with sorafenib. Univariate analyses of overall survival identified therapeutic effect as an independent risk factor in all patients. Among all patients, 141 developed PD. Of those, 58 (41%) were treated with sorafenib monotherapy, 70 (50%) with agents other than sorafenib, and 13 (9%) were not treated at all. The median survival time was 6.1 months for PD patients with sorafenib monotherapy and 12.2 months for those administered alternative treatments (p < 0.0001). Our results indicated that sorafenib treatment may have negative long-term therapeutic effects in advanced HCC patients with PD, and that alternative treatments should be considered for these patients after sorafenib administration.

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