1.Determination of reactive oxygen generated from natural medicines and their antibacterial activity$
Noriko TAJIMA ; Makiko TAKASAKI ; Haruka FUKAMACHI ; Takeshi IGARASHI ; Yoshijiro NAKAJIMA ; Hidetoshi ARAKAWA
Journal of Pharmaceutical Analysis 2016;6(4):214-218
Extracts of 16 natural medicine powders (Galla chinensis, Malloti cortex, Cassiae semen, Sophorae radix, Myricae cortex, Crataegi fructus, Gambir, Mume fructus, Geranii herba, Phellodendri cortex, Coptidis rhizoma, Swertiae herba, and Cinnamomi cortex) were assayed for reactive oxygen concentrations using the per-oxyoxalate chemiluminescent detection system. High luminescence intensity was observed in Galla chinensis, Geranii herba, Malloti cortex, Myricae cortex, and Cinnamomi cortex. Additional experiments identified the reactive oxygen species as hydrogen peroxide. Galla chinensis generated 2.4 ? 10 ? 4 mol/L hydrogen peroxide from a 1 mg/mL solution. In bacterial growth tests, Galla chinensis extract had antibacterial activity against Escherichia coli, Staphylococcus aureus, Bacteroides thetaiotaomicron, Campylobacter sputorum biovar sputorum, Streptococcus salivarius thermophilus, Lactobacillus casei, and Bifidobacterium longum infantis. This antibacterial activity was de-creased by the addition of catalase. It revealed that hydrogen peroxide which Galla chinensis produced participated in antibacterial activity.
2.Interferon treatment for Japanese patients with favorable-risk metastatic renal cell carcinoma in the era of targeted therapy.
Tomokazu SAZUKA ; Naoki NIHEI ; Kazuyoshi NAKAMURA ; Shinichi SAKAMOTO ; Satoshi FUKASAWA ; Atsushi KOMARU ; Takeshi UEDA ; Tatsuo IGARASHI ; Tomohiko ICHIKAWA
Korean Journal of Urology 2015;56(3):205-211
PURPOSE: Single-agent interferon (IFN) is no longer regarded as a standard option for first-line systemic treatment of metastatic renal cell carcinoma (RCC) in Western countries. However, some patients with favorable-risk RCC may still achieve complete and long-lasting remission in response to IFN treatment. The present study compared favorable-risk Japanese patients with metastatic RCC Japanese patients who had been treated with IFN or tyrosine kinase inhibitor (TKI) therapy as a first-line systemic therapy. MATERIALS AND METHODS: From 1995 to 2014, a total of 48 patients with favorable risk as defined by the Memorial Sloan Kettering Cancer Center criteria who did not receive adjuvant systemic therapy were retrospectively enrolled in this study. We assessed the tumor response rate, progression-free survival (PFS), and overall survival (OS). RESULTS: The objective response rate for first-line therapy was 29% in the IFN group and 47% in the TKI group, but this difference did not reach the level of statistical significance. Median OS for IFN and TKI was 71 and 47 months, respectively (p=0.014). Median first-line PFS for IFN and TKI was 20 and 16 months, respectively (no significant difference). First-line IFN therapy did not prove inferior to TKI therapy in terms of OS according to metastatic sites. CONCLUSIONS: IFN is associated with a survival benefit in Japanese patients with favorable-risk metastatic RCC in the era of targeted therapy. Further prospective study is needed.
Adult
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Aged
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Antineoplastic Agents/*therapeutic use
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Carcinoma, Renal Cell/*drug therapy
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Disease-Free Survival
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Female
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Humans
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Interferons/*therapeutic use
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Japan
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Kidney Neoplasms/*drug therapy
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Male
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Middle Aged
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Neoplasm Metastasis/drug therapy
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Protein Kinase Inhibitors/therapeutic use
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Protein-Tyrosine Kinases/antagonists & inhibitors
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Retrospective Studies
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Risk Factors
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Treatment Outcome
3.Suppression of metastasis of rat prostate cancer by introduction of human chromosome 13.
Shigeru HOSOKI ; Sho OTA ; Yayoi ICHIKAWA ; Hiroyoshi SUZUKI ; Takeshi UEDA ; Yukio NAYA ; Koichiro AKAKURA ; Tatsuo IGARASHI ; Mitsuo OSHIMURA ; Naoki NIHEI ; J Carl BARRETT ; Tomohiko ICHIKAWA ; Haruo ITO
Asian Journal of Andrology 2002;4(2):131-136
AIMChromosome 13 is one of the most frequently altered chromosomes in prostate cancer. The present study was undertaken to examine the role of human chromosome 13 in the progression of prostate cancer.
METHODSHuman chromosome 13 was introduced into highly metastatic rat prostate cancer cells via microcell-mediated chromosome transfer.
RESULTSMicrocell hybrid clones containing human chromosome 13 showed suppression of metastasis to the lung without any suppression of tumorigenicity, except for one clone, which contained the smallest sized human chromosome 13 and did not show any suppression on lung metastasis. Expression of two known tumor suppressor genes, BRCA2 and RB1, which map to chromosome 13, was examined by reverse transcription- polymerase chain reaction analysis. BRCA2 was expressed only in the metastasis-suppressed microcell-hybrid clones, whereas RB1 was expressed in all clones.
CONCLUSIONHuman chromosome 13 contains metastasis suppressor gene(s) for prostate cancer derived from rat. Furthermore, the RB1 gene is unlikely to be involved in the suppression of metastasis evident in this system.
Animals ; Animals, Genetically Modified ; Cell Division ; genetics ; Chromosome Aberrations ; Chromosome Mapping ; Chromosomes, Human, Pair 13 ; Disease Progression ; Genetic Markers ; Humans ; In Situ Hybridization, Fluorescence ; Kinetics ; Male ; Neoplasm Metastasis ; Prostatic Neoplasms ; genetics ; pathology ; prevention & control ; Rats ; genetics
4.Translocation of the Isolated Left Vertebral Artery during Thoracic Endovascular Stent-Graft Repair
Takeshi ARAI ; Daichi TAKAGI ; Takuya WADA ; Itaru IGARASHI ; Yuya YAMAZAKI ; Wataru IGARASHI ; Takayuki KADOHAMA ; Hiroshi YAMAMOTO
Japanese Journal of Cardiovascular Surgery 2022;51(4):240-244
Spinal cord injury (SCI) is a main concern in patients who undergo thoracic endovascular therapy (TEVAR), because the blood flow of the vertebro-basilar artery may be reduced due to the left subclavian artery (LSA) occlusion. If the left vertebral artery originates directly from the aorta, which is called the isolated left vertebral artery (ILVA), a technical consideration for strategies regarding blood perfusion of the ILVA during TEVARs is required. We hereby aim to report three patients (No.1, No.2, and No.3) who underwent an ILVA translocation and TEVAR with Zone 2 landing for aortic dissection. The diameter of the ILVA was 4.2, 2.3, and 2.2 mm, respectively, and the right vertebral artery (RVA) was dominant in all cases. In Patient No.1 and No.2 (ILVA diameter: 4.2 and 2.3 mm, respectively), the ILVA was anastomosed directly to the left common carotid artery. In Patient No.2, the translocated ILVA was occluded resulting in SCI, but the SCI improved when blood pressure was augmented. In Patient No.3 (ILVA diameter: 2.2 mm), the saphenous vein graft was interposed between the ILVA and the bypass artery because the ILVA diameter was small, but postoperatively, the ILVA remained patent, and no paraplegia was observed. The occlusion of ILVA could cause SCI, even if the RVA is larger than the LVA. Reconstruction of the ILVA is a critical procedure to prevent postoperative SCIs in patients undergoing TEVARs.