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Ōkawara, Japan

Inoue A.,Tohoku University | Sugawara S.,Sendai Kousei Hospital | Harada M.,Hokkaido Cancer Center | Kobayashi K.,Saitama University | And 8 more authors.
Journal of Thoracic Oncology | Year: 2014

Background: There has been no standard chemotherapy for advanced or recurrent thymic malignancies including thymic carcinoma (TC) and invasive thymoma (IT), though platinum and anthracycline have been reported as effective agents for the treatment of these diseases. The objective of this study was to evaluate the efficacy and safety of the combination of amrubicin (AMR), a new anthracycline agent, and carboplatin (CBDCA) in patients with advanced thymic malignancies. Methods: Patients with histologically confirmed thymic malignancies received AMR (35 mg/m2, days 1-3) and CBDCA (area under the curve 4.0, day 1) every 3 weeks. Patients who had received previous chemotherapy were treated with a reduced dose of AMR (30 mg/m2). The primary end point was objective response rate (ORR), and secondary endpoints were progression-free survival, overall survival, and toxicity profile. Results: From December 2008 to October 2012, 51 patients (33 TC and 18 IT) were enrolled. The median number of treatment cycles was four in each group. The ORR and progression-free survival were 30% (95% confidence interval, 14-46) and 7.6 months in the TC group, and 17% (95% confidence interval, 0-34) and 7.6 months in the IT group, respectively. The ORR of TC patients without previous chemotherapy (n = 19) was 42%. Although grade 3 or 4 hematological toxicities were common including neutropenia (82%) and febrile neutropenia (22%), these were transient and manageable. Nonhematological toxicities were moderate and no treatment-related death was observed. Conclusions: The combination of AMR with CBDCA was active for TC with acceptable toxicity, although it was not effective for IT. Further investigation of this regimen for advanced TC is warranted. Copyright © 2014 by the International Association for the Study of Lung Cancer. Source


Soeda H.,Tohoku University | Shimodaira H.,Tohoku University | Watanabe M.,Tohoku University | Suzuki T.,Sendai Medical Center | And 6 more authors.
International Journal of Clinical Oncology | Year: 2013

Background: Anti-epidermal growth factor receptor (EGFR) antibodies, cetuximab, and panitumumab are established as a new treatment option for metastatic colorectal cancer (mCRC). Among activating mutations downstream of EGFR, the KRAS mutation, which is present in 30-45 % of CRC patients, has shown to be a predictive biomarker of resistance to anti-EGFR antibody therapy based on Caucasian studies. Methods: Forty-three chemotherapy-refractory Japanese patients with mCRC were treated with cetuximab monotherapy or cetuximab plus irinotecan. KRAS, BRAF, and PIK3CA mutational status of tumors was assessed. The association between mutational status and treatment outcome was evaluated. Results: Of 43 tumors, KRAS, BRAF, and PIK3CA mutations were identified in 12 (27.9 %), 2 (4.7 %), and 2 (4.7 %) tumors, respectively. The wild-type KRAS subgroup showed better clinical outcomes than the mutant KRAS subgroup in terms of response rate (RR) (31.3 % vs. 0 %, P = 0.034) and progression-free survival (PFS) (5.1 vs. 3.0 months, P = 0.017). No responder to treatment was shown in 16 (37.2 %) patients with tumors harboring mutations in any one of the three genes (KRAS, BRAF, and PIK3CA). The wild-type subgroup without any mutations in KRAS, BRAF, and PIK3CA had a better RR (37.0 %) and PFS (6.4 months) than did the wild-type KRAS subgroup. Conclusion: Our data indicated that KRAS status is predictive of cetuximab response in the Japanese population. The additional analysis of BRAF and PIK3CA genes in wild-type KRAS patients could improve selection of patients who are most likely to benefit from anti-EGFR antibody therapy. © 2012 Japan Society of Clinical Oncology. Source


Watanuki Z.,South Miyagi Medical Center
The Tohoku journal of experimental medicine | Year: 2012

Interstitial lung diseases (ILDs) represent a large group of different diseases, with a large part comprising idiopathic interstitial pneumonias. Differentiating hypersensitivity pneumonitis (HP), especially its chronic form and other ILDs, is difficult because of similarities in radiological manifestation and clinical course, and the difficulty of identifying causative antigens. We recently experienced a patient with Cladosporium-induced chronic HP that developed in a household environment, but the cause had been misdiagnosed as idiopathic interstitial pneumonia for several years. This case highlighted the need for measures differentiating HP from idiopathic interstitial pneumonia. In this study, we examined fungal exposure in ILDs using an antibody titer in serum to identify possible fungus-related HP. We measured the antibody titer to Cladosporium spp. in 34 patients with various ILDs, 17 patients with bronchial asthma, and 21 control subjects using an immunofluorescence assay. ILDs included HP (5 patients), idiopathic interstitial pneumonias (21 patients), and ILDs with collagen vascular diseases (8 patients). Results showed a significantly higher tendency for high anti-Cladosporium antibody titers in ILD groups (12 patients out of 34 patients), compared to patients with bronchial asthma (0/17) or control subjects (0/21). This increase in antibody titers was observed not only in patients with HP, but also in those with idiopathic interstitial pneumonias and those exhibiting collagen vascular diseases with ILDs. This report highlights the pathogenic role of fungal antigens in various ILDs. In conclusion, fungi commonly observed in our living environment such as Cladosporium could be involved in the development of ILDs. Source


Kakisaka Y.,South Miyagi Medical Center
Journal of child neurology | Year: 2013

The symptoms and prevalence of migraine headaches are widely recognized; however, less is known about migraine-related spontaneous body pain, or migrainous corpalgia. Only a few reports have described it. The case of a 13-year-old boy with onset of migrainous corpalgia at the age of 12 years is presented. He suffered from pulsatile headaches and bilateral lower back pain, which would appear either with the headache or as an isolated symptom. Various medical examinations showed no abnormalities. He was diagnosed as having migraine without aura and successfully treated with valproic acid. It is unique for this patient to have lower back pain as a symptom of migrainous corpalgia. It would be important for physicians to understand the variety of pain symptoms in migraine patients, as shown here, for better and comprehensive understanding of migraine and its related condition. Source


Kanno T.,Tohoku University | Iijima K.,Tohoku University | Abe Y.,Tohoku University | Koike T.,Tohoku University | And 9 more authors.
Journal of Gastroenterology | Year: 2013

Background Societal stress derived from an event that affects the whole society, e. g., a natural disaster, provides a unique, indirect way of determining the relationship between psychological stress and peptic ulcer disease in humans. In this study, we investigated the changing patterns of the incidence of peptic ulcers before and after the Great East Japan earthquake, which occurred on 11 March, 2011. Methods Clinical data of patients with peptic ulcers were retrospectively collected during the 3 months after the earthquake (2011) from 7 major hospitals in the middle of the stricken area, and were compared with the data for the same period of the previous year (2010). The eligible subjects were classified into four groups according to Helicobacter pylori infection status and intake of nonsteroidal anti-inflammatory drugs (NSAIDs). Results The incidence of all types of peptic ulcers was 1.5-fold increased after the earthquake, and in particular, the incidence of hemorrhagic ulcers was 2.2-fold increased; the gastric ulcer/duodenal ulcer ratio in hemorrhagic ulcers was also significantly increased (p<0.05). Regarding the etiology of the peptic ulcers, the proportion of non-H. pylori and non-NSAID ulcers was significantly increased, from 13 % in 2010 to 24 % in 2011 after the earthquake (p<0.05). Conclusion In addition to the increased incidence of peptic ulcers, compositional changes in the disease were observed after the Great East Japan earthquake. The significant increase in the proportion of non-H. pylori and non-NSAID ulcers after the earthquake indicated that psychological stress alone induced peptic ulcers in humans independently of H. pylori infection and NSAID intake. © Springer 2012. Source

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