FullText URL fulltext.pdf
Author Sugimoto, Seiichiro| Soh, Junichi| Suzawa, Ken| Miyoshi, Kentaroh| Otani, Shinji| Yamamoto, Hiromasa| Okazaki, Mikio| Yamane, Masaomi| Oto, Takahiro| Kanazawa, Susumu| Kiura, Katsuyuki| Toyooka, Shinichi|
Keywords Lung cancer Aspergillosis Surgery Radiation Chemotherapy
Note This is a post-peer-review, pre-copyedit version of an article published in Surgery Today. The final authenticated version is available online at: http://dx.doi.org/10.1007/s00595-020-01960-5.|
Published Date 2020-01-21
Publication Title Surgery Today
Volume volume50
Issue issue8
Publisher Springer
Start Page 863
End Page 871
ISSN 0941-1291
NCID AA10824685
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 31965262
DOI 10.1007/s00595-020-01960-5
Web of Science KeyUT 000550244700010
Related Url isVersionOf https://doi.org/10.1007/s00595-020-01960-5
FullText URL fulltext.pdf
Author Sugiura, Hiroyuki| Nishimori, Hisakazu| Nishii, Kazuya| Toji, Tomohiro| Fujii, Keiko| Fujii, Nobuharu| Matsuoka, Ken-ichi| Nakata, Koh| Kiura, Katsuyuki| Maeda, Yoshinobu|
Keywords pulmonary alveolar proteinosis primary myelofibrosis autopsy ruxolitinib
Published Date 2020-08-15
Publication Title Internal Medicine
Volume volume59
Issue issue16
Start Page 2023
End Page 2028
ISSN 0918-2918
NCID AA10827774
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 by The Japanese Society of Internal Medicine
File Version publisher
PubMed ID 32448830
DOI 10.2169/internalmedicine.4082-19
Web of Science KeyUT 000563078400014
Related Url isVersionOf https://doi.org/10.2169/internalmedicine.4082-19
FullText URL fulltext.pdf figure.pptx
Author Higo, Hisao| Miyahara, Nobuaki| Taniguchi, Akihiko| Senoo, Satoru| Itano, Junko| Watanabe, Hiromi| Oda, Naohiro| Kayatani, Hiroe| Ichikawa, Hirohisa| Shibayama, Takuo| Kajimoto, Kazuhiro| Tanimoto, Yasushi| Kanehiro, Arihiko| Maeda, Yoshinobu| Kiura, Katsuyuki| OKAYAMA respiratory disease study group (ORDSG)|
Keywords Idiopathic pulmonary fibrosis High-resolution computed tomography Pirfenidone Forced vital capacity
Note This fulltext is available in Feb. 2021.|
Published Date 2020-02-23
Publication Title Respiratory Investigation
Volume volume58
Issue issue3
Publisher Elsevier
Start Page 185
End Page 189
ISSN 22125345
NCID AA12579673
Content Type Journal Article
language 英語
File Version author
PubMed ID 32102769
DOI 10.1016/j.resinv.2019.12.007
Web of Science KeyUT 000531841500009
Related Url isVersionOf https://doi.org/10.1016/j.resinv.2019.12.007
JaLCDOI 10.18926/AMO/61429
FullText URL 75_1_15.pdf
Author Katsui, Kuniaki| Ogata, Takeshi| Tada, Akihiro| Sugiyama, Soichi| Yoshio, Kotaro| Kuroda, Masahiro| Kiura, Katsuyuki| Maeda, Yoshinobu| Toyooka, Shinichi| Hiraki, Takao| Kanazawa, Susumu|
Abstract The aim of this study was to investigate whether volumetric positron emission tomography (PET) parameters are prognostic predictors in stage III non-small cell lung cancer patients receiving definitive concurrent chemo-radiotherapy (CCRT) with cisplatin/docetaxel. Cases involving definitive CCRT were reviewed retrospectively, and the maximum standardized uptake value, metabolic tumor volume (MTV) and total lesion glycolysis (TLG) were calculated. The relationships between these PET parameters and prognosis were analyzed. MTV and TLG were significant predictors of distant metastasis-free survival (DMFS) (p = 0.0003 and 0.0005, respectively) and progression-free survival (PFS) (p = 0.001 and 0.0007, respectively). The three-year DMFS rates in patients with low and high MTV were 13.3% and 64.6%, respectively, and the corresponding values in those with low and high TLG were 13.3% and 65.2%, respectively. The three-year PFS rates in patients with low and high MTV were 13.3% and 57.8%, respectively, and the corresponding values in patients with low and high TLG were 13.3% and 57.8%, respectively. However, MTV and TLG were not predictors of local control or overall sur-vival. We demonstrated that volumetric PET parameters were predictors of patients receiving definitive CCRT. Our findings contradict the findings of previous reports and warrant further research to validate them.
Keywords volumetric positron emission tomography parameters distant metastasis-free survival chemoradiotherapy cisplatin/docetaxel non-small cell lung cancer
Amo Type Original Article
Published Date 2021-02
Publication Title Acta Medica Okayama
Volume volume75
Issue issue1
Publisher Okayama University Medical School
Start Page 15
End Page 23
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2021 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 33649609
JaLCDOI 10.18926/AMO/60796
FullText URL 74_5_371.pdf
Author Makimoto, Go| Ohashi, Kadoaki| Maeda, Yoshinobu| Kiura, Katsuyuki|
Abstract The prognosis of advanced non-small cell lung cancer (NSCLC) patients has improved in recent decades, especially for patients with an oncogenic driver mutation. Anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitors (TKIs) are effective for patients with the echinoderm microtubule-associated protein-like 4-ALK fusion gene. Several ALK-TKIs have been established: the first-generation ALK-TKI, crizotinib; second-generation ALK-TKIs, alectinib and ceritinib; and third-generation ALK-TKI, lorlatinib. Some ALK-TKIs are effective for tumors that are resistant to other ALK-TKIs; however, as is known in epidermal growth factor receptormutant lung cancer, tumor resistance is inevitable. ALK-positive NSCLCs acquire resistance via various mechanisms, making it a heterogeneous disease. Therefore, it is necessary to develop next-generation treatment strategies, such as the use of next-generation ALK-TKIs for secondary mutations, or combination therapies with ALK-TKIs and other TKIs. In this review, we summarize the development and use of ALK-TKIs, prior pivotal clinical trials, and resistance mechanisms.
Keywords lung cancer anaplastic lymphoma kinase tyrosine kinase inhibitors resistance mechanism
Amo Type Review
Published Date 2020-10
Publication Title Acta Medica Okayama
Volume volume74
Issue issue5
Publisher Okayama University Medical School
Start Page 371
End Page 379
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 33106692
Web of Science KeyUT 000581970100001
NAID 120006892922
JaLCDOI 10.18926/AMO/60802
FullText URL 74_5_423.pdf
Author Hirabae, Atsuko| Ichihara, Eiki| Sunami, Ryota| Ota, Moeko| Iwamoto, Yoshitaka| Maeda, Yoshinobu| Kiura, Katsuyuki|
Abstract We report a case of late-onset hyperprogressive disease after cessation of a PD-1 inhibitor. A male was diagnosed with metastatic lung adenocarcinoma with little progression for 2 months before treatment. He received pembrolizumab as a second-line treatment and was subsequently prescribed docetaxel for 3 months until a slight increase in pleural effusion. At the time of progression to docetaxel, he commenced prednisolone because of immune-system-related diarrhea. After that, his general condition rapidly worsened with severe fatigue and hypoxia. Computed tomography revealed a massive increase of pleural effusion and replacement of almost the entire liver with cancer over a period of 5 weeks.
Keywords lung cancer immune checkpoint inhibitors pembrolizumab hyperprogression
Amo Type Case Report
Published Date 2020-10
Publication Title Acta Medica Okayama
Volume volume74
Issue issue5
Publisher Okayama University Medical School
Start Page 423
End Page 425
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 33106698
Web of Science KeyUT 000581970100007
NAID 120006892928
FullText URL fulltext.pdf
Author Nishii, Kazuya| Inoue, Masaaki| Obata, Hideto| Ueda, Yutaka| Kozuki, Toshiyuki| Yamasaki, Masahiro| Moritaka, Tomonori| Awaya, Yoshikazu| Sugimoto, Keisuke| Gemba, Kenichi| Kuyama, Shoichi| Ichikawa, Hirohisa| Shibayama, Takuo| Kubota, Tetsuya| Kodani, Masahiro| Kishino, Daizo| Fujimoto, Nobukazu| Ishikawa, Nobuhisa| Tsubata, Yukari| Ishii, Tomoya| Fujitaka, Kazunori| Hotta, Katsuyuki| Kiura, Katsuyuki|
Keywords Database observational study real world data surveillance treatment
Published Date 2021-01-12
Publication Title Thoracic Cancer
Volume volume12
Issue issue5
Publisher Wiley
Start Page 725
End Page 731
ISSN 1759-7706
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 The Authors.
File Version publisher
PubMed ID 33434415
DOI 10.1111/1759-7714.13789
Web of Science KeyUT 000606961500001
Related Url isVersionOf https://doi.org/10.1111/1759-7714.13789
FullText URL fulltext.pdf
Author Harada, Daijiro| Isozaki, Hideko| Kozuki, Toshiyuki| Yokoyama, Toshihide| Yoshioka, Hiroshige| Bessho, Akihiro| Hosokawa, Shinobu| Takata, Ichiro| Takigawa, Nagio| Hotta, Katsuyuki| Kiura, Katsuyuki| Okayama Lung Cancer Study Group|
Keywords Alectinib anaplastic lymphoma kinase crizotinib drug therapy non-small cell lung carcinoma
Published Date 2021-01-20
Publication Title Thoracic Cancer
Volume volume12
Issue issue5
Publisher Wiley
Start Page 643
End Page 649
ISSN 1759-7706
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2021 The Authors.
File Version publisher
PubMed ID 33470536
DOI 10.1111/1759-7714.13825
Web of Science KeyUT 000608856400001
Related Url isVersionOf https://doi.org/10.1111/1759-7714.13825
FullText URL fulltext.pdf
Author Watanabe, Kenta| Katsui, Kuniaki| Sugiyama, Soichiro| Yoshio, Kotaro| Kuroda, Masahiro| Hiraki, Takao| Kiura, Katsuyuki| Maeda, Yoshinobu| Toyooka, Shinichi| Kanazawa, Susumu|
Keywords Clinical pathology Elderly Non-small cell lung carcinoma Radiosurgery Stereotactic body radiation therapy
Published Date 2021-02-23
Publication Title Radiation Oncology
Volume volume16
Issue issue1
Publisher BMC
Start Page 39
ISSN 1748-717X
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © The Author(s) 2021.
File Version publisher
PubMed ID 33622369
DOI 10.1186/s13014-021-01769-7
Web of Science KeyUT 000623175000001
Related Url isVersionOf https://doi.org/10.1186/s13014-021-01769-7
Author 木浦 勝行| 谷本 安| 田端 雅弘| 金廣 有彦| 上岡 博| 谷本 光音| 渡邊 都貴子| 草野 展周| 小出 典男|
Published Date 2005-05-30
Publication Title 岡山医学会雑誌
Volume volume115
Issue issue1
Content Type Journal Article
Author Nogami, Naoyuki| Hotta, Katsuyuki| Kuyama, Shoichi| Kiura, Katsuyuki| Takigawa, Nagio| Chikamori, Kenichi| Shibayama, Takuo| Kishino, Daizo| Hosokawa, Shinobu| Tamaoki, Akihiko| Harita, Shingo| Tabata, Masahiro| Ueoka, Hiroshi| Shinkai, Tetsu| Tanimoto, Mitsune|
Published Date 2011-10
Publication Title Lung Cancer
Volume volume74
Issue issue1
Content Type Journal Article
Author Murakami, Toshi| Takigawa, Nagio| Ninomiya, Takashi| Ochi, Nobuaki| Yasugi, Masaaki| Honda, Yoshihiro| Kubo, Toshio| Ichihara, Eiki| Hotta, Katsuyuki| Tanimoto, Mitsune| Kiura, Katsuyuki|
Published Date 2014-01
Publication Title Lung Cancer
Volume volume83
Issue issue1
Content Type Journal Article
Author Ochi, Nobuaki| Takigawa, Nagio| Harada, Daijiro| Yasugi, Masayuki| Ichihara, Eiki| Hotta, Katsuyuki| Tabata, Masahiro| Tanimoto, Mitsune| Kiura, Katsuyuki|
Published Date 2014-03-10
Publication Title Experimental Cell Research
Volume volume322
Issue issue1
Content Type Journal Article
JaLCDOI 10.18926/AMO/30737
FullText URL fulltext.pdf
Author Suzaki, Noriyuki| Hiraki, Akio| Takigawa, Nagio| Ueoka, Hiroshi| Tanimoto, Yasushi| Kozuki, Toshiyuki| Tabata, Masahiro| Kanehiro, Arihiko| Kiura, Katsuyuki| Tanimoto, Mitsune|
Abstract A 71-year-old Japanese man with adenocarcinoma of the lung developed interstitial pneumonia after treatment with paclitaxel. The patient had acute chills and fever on the fourth day after the second exposure to paclitaxel, rapidly got worse despite empiric therapies, and developed prolonged respiratory failure requiring mechanical ventilation. Four months later, he died of respiratory failure due to progression of both interstitial pneumonia and lung cancer. This is the first case developing fatal paclitaxel-induced pulmonary toxicity to date. Interstitial pneumonia should be considered one of the possible life-threatening complications during treatment with paclitaxel.
Keywords paclitaxel adverse effect lung cancer interstitial pneumonia
Amo Type Article
Published Date 2006-10
Publication Title Acta Medica Okayama
Volume volume60
Issue issue5
Publisher Okayama University Medical School
Start Page 295
End Page 298
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 17072376
Web of Science KeyUT 000241509000006
JaLCDOI 10.18926/AMO/30751
FullText URL fulltext.pdf
Author Kitajima, Takuji| Nishii, Kenji| Ueoka, Hiroshi| Shibayama, Takuo| Gemba, Kenichi| Kodani, Tsuyoshi| Kiura, Katsuyuki| Tabata, Masahiro| Hotta, Katsuyuki| Tanimoto, Mitsune| Sobue, Tomotaka|
Abstract <p>To evaluate recent improvements in lung cancer screening, we compared the results of recently conducted lung cancer screening with those of a previous screening. This study compared the survival of lung cancer patients detected by lung cancer screening conducted between 1976 and 1984 (early period) with that conducted between 1989 and 1997 (late period). Two hundred seventy-six patients with lung cancer were detected in the early period and 541 patients with lung cancer were detected in the late period. The median survival time (late : 49.8 vs. early : 27.8 months) and the 5-year survival rate (late : 47.8 vs. early : 34.8%) of the patients with lung cancer detected in the late period were significantly better than those in the early period (p = 0.0054). Among patients undergoing resection, the proportion of pathological stage I patients in the late period was significantly higher than that in the early period (late : 60.8 vs. early : 54.9%, p = 0.005). Multivariate analysis showed that the screening time period was a significant prognostic factor (hazard ratio = 0.685, 95% confidence interval : 0.563-0.832, p = 0.0002). These results were consistent with the findings of case-control studies of lung cancer screening programs in the late period recently conducted in Japan, which also showed a greater efficacy for screening than for previous case-control studies in the early period.</p>
Keywords lung cancer screening survival lung cancer mortality
Amo Type Article
Published Date 2006-06
Publication Title Acta Medica Okayama
Volume volume60
Issue issue3
Publisher Okayama University Medical School
Start Page 173
End Page 179
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 16838046
Web of Science KeyUT 000238503600005
JaLCDOI 10.18926/AMO/30795
FullText URL fulltext.pdf
Author Matsuo, Keisuke| Kiura, Katsuyuki| Ueoka, Hiroshi| Tabata, Masahiro| Shibayama, Takuo| Matsumura, Tadashi| Takigawa, Nagio| Hiraki, Shunkichi| Harada, Mine|
Abstract <p>We have established an Adriamycin (ADM) -resistant small cell lung cancer (SCLC) cell line, SBC-3/ADM100, which shows multifactorial mechanisms of resistance to ADM, such as overexpression of P-glycoprotein, an enhanced detoxifying system and a decrease in topoisomerase II activity. In the present study, we confirmed that SBC-3/ADM 100 showed collateral sensitivity to methotrexate and TNP-351, a new antifolate, though this cell line showed a typical multidrug resistance (MDR) pattern. We also demonstrated a faster uptake and higher accumulation (1.3-fold) of TNP-351 in the SBC-3/ADM100 cells than those in the parent SBC-3 cells. These results explain one of the mechanisms for collateral sensitivity in the resistant cells. Furthermore, this cell line was found to have no cross-resistance to edatrexate and minimal cross-resistance to trimetrexate, 254-S (cisplatin analog), 5-fluorouracil and 4-hydroperoxyifosfamide. These drugs will have clinical importance in patients with SCLC who were previously treated with an ADM-containing regimen. Thus, antifolates, especially TNP-351 and edatrexate, can be expected to eradicate residual multidrug resistant SCLC cells selected by ADM.</p>
Keywords Adriamycin-resistant cell line antifolates small cell lung cancer
Amo Type Article
Published Date 1997-06
Publication Title Acta Medica Okayama
Volume volume51
Issue issue3
Publisher Okayama University Medical School
Start Page 121
End Page 127
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9227790
Web of Science KeyUT A1997XJ12700002
JaLCDOI 10.18926/AMO/31310
FullText URL fulltext.pdf
Author Tamura, Makoto| Ueoka, Hiroshi| Kiura, Katsuyuki| Tabata, Masahiro| Shibayama, Takuo| Miyatake, Kazuyo| Genba, Kenichi| Hiraki, Shunkichi| harada, Mine|
Abstract <p>In order to elucidate factors influencing the prognosis of small-cell lung cancer (SCLC), we reviewed the records of 253 patients with SCLC and evaluated 20 pretreatment prognostic factors by univariate analysis and Cox's multiple regression analysis. Recursive partitioning and amalgamation (RPA) was employed to identify subgroups with similar survival rates. Cox's multiple regression analysis identified five significant factors: extent of disease, number of metastatic sites, serum albumin, serum lactate dehydrogenase, and presence of weight loss. Among these, extent of disease was the most influential factor. RPA analysis revealed three subgroups predicting significantly different prognoses. The median survival time and 3-year survival rate were 18.4 months and 20.6%, respectively for the good-risk group (limited disease without weight loss), 13.5 months and 9.1%, respectively for the intermediate-risk group (limited disease with weight loss or extensive disease with less than two metastatic sites), and 9.2 months and 0%, respectively for the poor-risk group (extensive disease with two or more metastatic sites). These results will be useful for development of new staging system or subsequent stratification for randomized trials.</p>
Keywords prognostic factors Cox's multiple regression analysis recursive partitioning and amalgamayion method small-sell lung canser
Amo Type Article
Published Date 1998-04
Publication Title Acta Medica Okayama
Volume volume52
Issue issue2
Publisher Okayama University Medical School
Start Page 105
End Page 111
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 9588226
Web of Science KeyUT 000073363000006
JaLCDOI 10.18926/AMO/31552
FullText URL fulltext.pdf
Author Yonei, Toshiro| Ohnoshi, Taisuke| Hiraki, Shunkichi| Ueoka, Hiroshi| Kiura, Katsuyuki| Moritaka, Tomonori| Shibayama, Takuo| Tabata, Masahiro| Segawa, Yoshihiko| Takigawa, Nagio| Kimura, Ikuro|
Abstract <p>Antitumor activities of five platinum analogs, including cisplatin, carboplatin, 254-S, DWA2114R, and NK121, were compared using five human lung cancer cell lines and 19 tumor specimens obtained from lung cancer patients. The antitumor activity was evaluated by determining the ratio of the maximum tolerated dose of each drug to the 70% tumor growth inhibitory concentration in a colony assay. Cisplatin was the most potent agent, followed by 254-S and carboplatin. DWA2114R and NK121 were less potent than cisplatin and 254-S. Cross-resistance to adriamycin was also investigated using an adriamycin-resistant small cell lung cancer subline, SBC -3/ADM30. SBC-3/ADM30 was 1.7- to 4.0-fold more resistant to cisplatin, carboplatin, NK121, and DWA2114R, than was the parent line, SBC-3, and the subline was 2.0-fold more sensitive to 254-S. Using SBC-3, in vitro combination effects of etoposide and cisplatin, carboplatin, or 254-S were evaluated by the median-effect principle. Synergism was noted when cisplatin and etoposide were combined at a fixed molar ratio of 1:1. Combination of carboplatin and etoposide showed an additive effect. The combination of 254-S and etoposide was antagonistic at low concentrations, but was markedly synergistic at higher concentrations. These data suggested the efficacy of 254-S in the treatment of lung cancer.</p>
Keywords platinum analogs antitumor activity lung cancer colony assay combination effect
Amo Type Article
Published Date 1993-08
Publication Title Acta Medica Okayama
Volume volume47
Issue issue4
Publisher Okayama University Medical School
Start Page 233
End Page 241
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8213217
Web of Science KeyUT A1993LV73800003
JaLCDOI 10.18926/AMO/31553
FullText URL fulltext.pdf
Author Tabata, Masahiro| Ohnoshi, Taisuke| Ueoka, Hiroshi| Kiura, Katsuyuki| Kimura, Ikuro|
Abstract <p>We report a preliminary study to determine whether MDR1 gene expression level in small cell lung cancer (SCLC) tumors is a useful predictor of tumor response to chemotherapy and patient survival in association with myc amplification in the tumor. We analyzed 18 patients with SCLC receiving adriamycin and etoposide combination chemotherapy between August 1989 and November 1991; 16 males and 2 females, median age of 68 years, and 7 with limited disease and 11 with extensive disease. MDR1 mRNA expression level and myc family gene amplification were simultaneously determined by polymerase chain reaction using transbronchial biopsy specimens which were obtained at diagnosis. Patients with tumors expressing low MDR1 mRNA responded more favorably to chemotherapy than those with tumors expressing high MDRI mRNA, however, the difference in tumor response was statistically not significant (84.6% versus 40%). The overall survival was significantly shorter in the latter than in the former (7.2 months versus 11.7 months; p = 0.023). The survival of the 4 patients with tumor showing myc family gene amplification was almost identical to that of patients with tumors showing no amplification of the gene (8.2 months versus 8.8 months; p = 0.73). Multivariate Cox's regression analysis supports the notion that MDR1 may be a useful independent prognostic factor.</p>
Keywords small cell lung cancer MDR1 mRNA expression myc gene amplification prognostic factor
Amo Type Article
Published Date 1993-08
Publication Title Acta Medica Okayama
Volume volume47
Issue issue4
Publisher Okayama University Medical School
Start Page 243
End Page 248
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8213218
Web of Science KeyUT A1993LV73800004
JaLCDOI 10.18926/AMO/31590
FullText URL fulltext.pdf
Author Segawa, Yoshihiko| Ohnoshi, Taisuke| Hiraki, Shunkichi| Ueoka, Hiroshi| Kiura, Katsuyuki| Kamei, Haruhito| Tabata, Masahiro| Shibayama, Takuo| Miyatake, Kazuyo| Genda, ken-ichi| Matsumura, Tadashi| Kimura, Ikuro|
Abstract <p>In an attempt to elucidate the tumor properties relating to responsiveness to chemotherapy, we examined immunohistochemically the expression of P-glycoprotein (P-gp) and carcinoembryonic antigen (CEA) in small cell lung cancer (SCLC) tumors. Tumor specimens from 33 patients were obtained at the time of diagnosis and relapse. Four patients expressed P-gp in their initial tumors, and 7 others did in recurrent tumors. The overall response rate to chemotherapy of the initial tumors was 75% for P-gp-positive initial tumors and 86% for P-gp-negative tumors, whereas the disease-free and overall survival times were significantly shorter in the former than the latter. Three patients showed CEA in their initial tumors, and 5 others did in recurrent tumors. The patients with CEA-positive initial tumors tended to relapse earlier than those with CEA-negative tumors. In addition, recurrent tumors expressing CEA were resistant to salvage chemotherapy. A clear correlation between CEA expression by tumors and the CEA level in the serum was observed at diagnosis as well as at relapse. These findings indicate that P-gp and/or CEA expression by a tumor and elevated CEA level in the serum may predict refractoriness of the tumor to chemotherapy.</p>
Keywords small cell lung cancer immunohistochemistry drug resistance P-glycoprotein carcinoembryonic antigen
Amo Type Article
Published Date 1993-06
Publication Title Acta Medica Okayama
Volume volume47
Issue issue3
Publisher Okayama University Medical School
Start Page 181
End Page 189
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 8104371
Web of Science KeyUT A1993LL12400007