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Ito N, Umazume M, Ojima Y, Shibata D, Ida Y, Komiya T, Matsumura H. Comparison of traditional two-injection dorsal digital block versus transthecal and subcutaneous single-injection digital block: A systematic review and meta-analysis. Hand Surg Rehabil 2021; 40:369-376. [PMID: 33895422 DOI: 10.1016/j.hansur.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/07/2021] [Accepted: 04/14/2021] [Indexed: 10/21/2022]
Abstract
Digital nerve block is a common procedure with several techniques, including the traditional digital nerve block, transthecal digital nerve block, and single subcutaneous palmar digital nerve block. This review aimed to evaluate the efficacy of these three methods. A systematic search was performed in the PubMed, Scopus, and Cochrane Library databases. The risk of bias of the studies was assessed using the Cochrane Collaboration's tool for assessing the risk of bias and the Risk of Bias Assessment Tool for Non-Randomized Studies. Fourteen prospective randomized controlled studies and one prospective comparative study were included. The three methods of digital block showed similar onset times, durations, injection pain and incidence of incomplete anesthesia. This review confirmed that all three methods of digital block are equally effective. Considering that patients prefer a single injection and the potential risk of complications, the single subcutaneous digital block could be more widely used.
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Affiliation(s)
- N Ito
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - M Umazume
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - Y Ojima
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - D Shibata
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - Y Ida
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - T Komiya
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan
| | - H Matsumura
- Department of Plastic and Reconstructive Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku Shinjuku-ku, Tokyo 160-0023, Japan.
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Mori Y, Suzuki N, Nagasaka T, Tanioka H, Iwamoto Y, Neki Y, Yamatsuji T, Kobayashi M, Nakajima M, Ojima Y, Ikeda S, Kawamoto K, Shinozaki K, Tsuji A, Hinoi T, Yamaguchi Y, Yamashita K, Shimokawa M, Okajima M, Hazama S. Multicenter phase II study of biweekly XELIRI plus bevacizumab as a second-line therapy in patients with metastatic colorectal cancer (JSWOG-C3 study). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsujikawa A, Ojima Y, Yamashiro K, Ooto S, Tamura H, Nakata I, Yoshimura N. Development of polypoidal lesions in age-related macular degeneration. Eye (Lond) 2011; 25:481-8. [PMID: 21252945 DOI: 10.1038/eye.2010.232] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
PURPOSE To investigate the development of polypoidal lesions using indocyanine green angiography (IA) in eyes with typical age-related macular degeneration (AMD). METHODS We retrospectively reviewed the medical records of 47 consecutive patients (47 eyes) with typical AMD who had been followed up with IA for at least 2 years. RESULTS At the initial visit, although all eyes showed classic and/or occult choroidal neovascularization (CNV) associated with AMD, no eyes showed polypoidal lesions by IA. However, during follow-up, 13 (27.7%) of the 47 eyes did show polypoidal lesions. All polypoidal lesions developed at the edge of persistent CNV or, more often, at the terminus of recently progressed CNV. Of 12 eyes with a final lesion area >8 disc area, 7 (58.3%) showed newly developed polypoidal lesions. In the eyes with these newly developed polypoidal lesions, the mean area of the vascular lesion had extended significantly from 10.50 ± 7.88 mm² to 20.87 ± 10.21 mm² during follow-up (P=0.0018). CONCLUSION The current observation suggests that IA of active AMD sometimes reveals polypoidal lesions if there is progression of the CNV in the subretinal pigment epithelium space.
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Affiliation(s)
- A Tsujikawa
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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4
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Henglein A, Heckel E, Ojima Y, Meissner G. Die γ-Strahlenchemie flüssiger Mischungen von Tetrachlorkohlenstoff und Zyklohexan. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19630670923] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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5
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Masai H, Takatsuji K, Sato Y, Ojima Y. Morphological variation in crucian brains, with special reference to the origin of the goldfish. J ZOOL SYST EVOL RES 2009. [DOI: 10.1111/j.1439-0469.1983.tb00555.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Heparanase expression in both normal endometrium and endometrial cancer. Int J Gynecol Cancer 2007; 16:1401-6. [PMID: 16803537 DOI: 10.1111/j.1525-1438.2006.00614.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to investigate the relationship between heparanase expression and prognostic factors in endometrial cancer, as well as the relationship between heparanase expression during phases of the normal endometrial cycle. Immunohistochemical analysis of 166 endometrial cancers and 34 normal endometria in various phases of growth was performed. The heparanase expression in the late-proliferative phase of normal endometria was found to be significantly higher than in either the early-proliferative or the secretory phases (P= .012 and P= .044, respectively). Heparanase expression was also significantly higher in endometrial cancer patients with tumors of an advanced FIGO stage (P= .0003) and high FIGO grade (P= .004) and with cancers showing either deep myometrial invasion (P= .023), lymph node metastasis (P= .006), lymphvascular space involvement (P= .048), or positive peritoneal cytology (P= .010). The disease-free and overall survival rates of patients with intense heparanase expression were significantly lower than those of patients with absent or moderate heparanase expression (P= .004 and P= .002, respectively). Heparanase may participate in normal endometrial remodeling and can serve as an indicator of the aggressive potential and poor prognosis of endometrial cancers.
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Association of CXCR4 and CCR7 chemokine receptor expression and lymph node metastasis in human cervical cancer. Ann Oncol 2007; 18:70-76. [PMID: 17032700 DOI: 10.1093/annonc/mdl342] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The chemokine receptors CXCR4 and CCR7 have been suggested to play an important role in cancer invasion and metastasis. The expression of these receptors in human cervical cancer, however, has seldom been characterized. PATIENTS AND METHODS We investigated the expression of CXCR4 and CCR7 in cervical cancer specimens and determined the association between their expression and the clinicopathological features observed, including patient outcome. RESULTS CXCR4 expression was significantly higher in elderly patients (P=0.025); it was also significantly increased in patients with cancers displaying large tumor size (P=0.010), deep stromal invasion (P=0.0004), lymph-vascular space involvement (P=0.0002), or lymph node metastasis (P<0.0001). CCR7 expression was significantly higher in cases of squamous cell carcinomas (P=0.010) and in patients with cancers showing large tumor size (P<0.0001), deep stromal invasion (P<0.0001), vaginal invasion (P=0.047), lymph-vascular space involvement (P=0.012), or lymph node metastasis (P<0.0001). Logistic regression analysis revealed that deep stromal invasion (P=0.017) and CXCR4 (P=0.016) and CCR7 (P=0.022) expression were independent factors that influenced pelvic lymph node metastasis. The disease-free survival and overall survival (OS) rates of patients exhibiting both CXCR4 and CCR7 expression were significantly reduced (P<0.0001). In addition, the expression of both CXCR4 and CCR7 was an independent prognostic factor for OS (95% confidence interval=1.03-17.86; P=0.046). CONCLUSIONS CXCR4 and CCR7 expression may be associated with lymph node metastasis; moreover, the expression of these receptors can serve as an indicator of poor prognosis in patients with cervical cancer.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - T Kusumoto
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - N Seki
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Matsuo
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Ojima
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Nakamura
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Hongo
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Hiramatsu
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Nawata K, Ojima Y, Okida M, Ogawa T, Omatsu T. Power scaling of a pico-second Nd:YVO(4) master-oscillator power amplifier with a phase-conjugate mirror. Opt Express 2006; 14:10657-10662. [PMID: 19529471 DOI: 10.1364/oe.14.010657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We investigated design issues for the power scaling of a pico-second Nd:YVO(4) master-oscillator power amplifier system with a photorefractive phase-conjugate mirror by using standard beam propagation analysis. We also demonstrated a 25 W diffraction-limited pico-second output. A corresponding extraction efficiency of 31 % was achieved.
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Prognostic significance of stromal versican expression in human endometrial cancer. Ann Oncol 2006; 18:269-74. [PMID: 17065588 DOI: 10.1093/annonc/mdl370] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Versican expression may enhance tumor invasion and metastasis. However, the expression of versican in human endometrial cancer has seldom been characterized. The aim of this study was to investigate versican expression in endometrial cancers. PATIENTS AND METHODS We immunohistochemically investigated the expression of versican protein in 167 endometrial cancers and analyzed the correlation with various observed clinicopathological features, including patient outcome. RESULTS Stromal versican expression was significantly higher in the advanced-stage (P = 0.010) and high-grade (P = 0.049) cancers, lymph node metastasis (P = 0.012), and ovarian metastasis (P = 0.024). Epithelial versican expression was significantly higher in patients with lymph node metastasis (P = 0.014) and lymph-vascular space involvement (P = 0.014). The disease-free survival (DFS) and overall survival (OS) rates of patients exhibiting high stromal versican expression were significantly lower than those of patients exhibiting low stromal versican expression (P < 0.0001). Multivariate analysis showed that high stromal versican expression was an independent prognostic factor for DFS and OS. CONCLUSIONS Versican enrichment of the stroma may be associated with tumor progression in endometrial cancer. Stromal versican expression can serve as an indicator of poor prognosis for patients with endometrial cancer.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Eguchi D, Nishizaki T, Ohta M, Ishizaki Y, Hanaki N, Okita K, Ohga T, Takahashi I, Ojima Y, Wada H, Tsutsui S. Laparoscopy-assisted right hepatic lobectomy using a wall-lifting procedure. Surg Endosc 2006; 20:1326-8. [PMID: 16763923 DOI: 10.1007/s00464-005-0723-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2005] [Accepted: 02/23/2006] [Indexed: 12/17/2022]
Abstract
This article describes a new technique for performing a laparoscopy-assisted right hepatic lobectomy using a hanger wall-lifting procedure. The patient is placed in the left semi-lateral position. A cholecystectomy and hemi-hepatic vascular inflow control are then performed through a midline incision, through which the resected liver can be removed. Next, the right lower chest and right upper abdominal wall are lifted by two wires vertical to the abdominal wall. Two ports, a 5-mm port in right lateral abdomen for forceps and a 12-mm port just right of the umbilicus for the laparoscope, are inserted. The obtained view of the operative field in the right upper abdominal cavity is thus excellent. The laparoscopy-assisted mobilization of the right hepatic lobe is done with the assistance of a hand inserted through the midline incision, including a dissection of the hepato-renal ligament, the right triangular ligament, and the right coronary ligament. A parenchymal dissection is then performed using the Cavitron Ultrasonic Surgical Aspirator (CUSA) and the resected specimen is passed through the midline incision without any morcellation of the liver. This procedure can minimize the length of the wound, while avoiding the lethal complications associated with pneumoperitoneum.
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Affiliation(s)
- D Eguchi
- Department of Surgery, Matsuyama Red Cross Hospital, Ehime 790, Japan.
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11
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Kodama J, Kusumoto T, Seki N, Matsuo T, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Heparanase expression in both normal endometrium and endometrial cancer. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200605000-00069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The aim of this study was to investigate the relationship between heparanase expression and prognostic factors in endometrial cancer, as well as the relationship between heparanase expression during phases of the normal endometrial cycle. Immunohistochemical analysis of 166 endometrial cancers and 34 normal endometria in various phases of growth was performed. The heparanase expression in the late-proliferative phase of normal endometria was found to be significantly higher than in either the early-proliferative or the secretory phases (P = .012 and P = .044, respectively). Heparanase expression was also significantly higher in endometrial cancer patients with tumors of an advanced FIGO stage (P = .0003) and high FIGO grade (P = .004) and with cancers showing either deep myometrial invasion (P = .023), lymph node metastasis (P = .006), lymphvascular space involvement (P = .048), or positive peritoneal cytology (P = .010). The disease-free and overall survival rates of patients with intense heparanase expression were significantly lower than those of patients with absent or moderate heparanase expression (P = .004 and P = .002, respectively). Heparanase may participate in normal endometrial remodeling and can serve as an indicator of the aggressive potential and poor prognosis of endometrial cancers.
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12
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Kodama J, Seki N, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Prognostic factors in node-positive patients with stage IB-IIB cervical cancer treated by radical hysterectomy and pelvic lymphadenectomy. Int J Gynaecol Obstet 2006; 93:130-5. [PMID: 16563395 DOI: 10.1016/j.ijgo.2006.02.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2005] [Revised: 02/13/2006] [Accepted: 02/14/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE The purpose of the present study was to identify prognostic factors in surgically treated patients with stage IB-IIB cervical cancers, who also presented with positive pelvic nodes. METHOD The patient population consisted of 68 individuals presenting with stage IB-IIB cervical cancers and with histologically proven pelvic lymph nodes. RESULT We found no association between the type of adjuvant therapy and patient outcome. Multivariate analysis revealed that non-squamous histology was an independent prognostic factor for disease-free and overall survival rates. In squamous cell carcinomas, the bilateral nature of the positive nodes was found to be a significant factor for disease-free survival rates. In non-squamous cell carcinomas, positive nodes of more than 2 cm in size were found to be a significant factor for disease-free survival rates. CONCLUSION Non-squamous histology was an independent prognostic factor and chemoradiotherapy did not improve the survival outcomes of the patients in this study population.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Umeda M, Komatsubara H, Ojima Y, Minamikawa T, Shibuya Y, Yokoo S, Ishii J, Komori T. A comparison of brachytherapy and surgery for the treatment of stage I–II squamous cell carcinoma of the tongue. Int J Oral Maxillofac Surg 2005; 34:739-44. [PMID: 15921890 DOI: 10.1016/j.ijom.2005.02.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2004] [Accepted: 02/14/2005] [Indexed: 11/16/2022]
Abstract
The treatment method for early stage tongue cancer is still controversial in Japan. The aim of this study is to compare the prognosis for patients with early tongue cancer treated with brachytherapy and surgery. A retrospective study was conducted to compare the efficacy of low-dose-rate brachytherapy (LDR), high-dose-rate brachytherapy (HDR), and surgery for early tongue cancer. A total of 180 patients with stage I-II tongue cancer were divided into three treatment groups: LDR (78), HDR (26), and surgery (71). Local recurrence was seen in thirteen patients (17%) of the LDR, nine (35%) of the HDR, and four (6%) of the surgery group. After salvage therapy, final local cure was obtained for 71 patients (91%) of the LDR, 22 (85%) of the HDR, and 71 (100%) of the surgery group. Neck failure was recorded for eight patients in the LDR, six in the HDR, and three in the surgery group. The respective 5-year overall survival rates for the LDR, HDR and surgery groups were 84.0%, 72.9%, 95.4% for stage I, and 72.2%, 51.5%, 93.8% for stage II. These findings show that surgery is the optimal treatment method for patients with stage I-II tongue cancer.
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Affiliation(s)
- M Umeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-Ku, Kobe 650-0017, Japan.
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14
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Kodama J, Seki N, Ojima Y, Nakamura K, Hongo A, Hiramatsu Y. Correlation of presenting symptoms and patient characteristics with endometrial cancer prognosis in Japanese women. Int J Gynaecol Obstet 2005; 91:151-6. [PMID: 16162346 DOI: 10.1016/j.ijgo.2005.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2005] [Revised: 08/03/2005] [Accepted: 08/04/2005] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To determine whether patient characteristics and presenting symptoms could be prognostic indicators for endometrial cancer in Japanese women. METHODS Review of the medical charts, which included presenting symptoms and other patient characteristics, of 242 women who underwent surgical treatment for FIGO stage I-IV endometrial cancer. RESULTS FIGO stage, histologic grade, and lower abdominal pain were found to be significant independent factors for progression-free and overall survival. In contrast, abnormal uterine bleeding, comorbidities, and prior malignancy were not found to be prognostic factors. CONCLUSION Lower abdominal pain was found to be an independent prognostic factor in endometrial cancer among Japanese women.
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Affiliation(s)
- J Kodama
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
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Ojima Y, Mizuno M, Kuboki Y, Komori T. In vitro effect of platelet-derived growth factor-BB on collagen synthesis and proliferation of human periodontal ligament cells. Oral Dis 2003; 9:144-51. [PMID: 12945596 DOI: 10.1034/j.1601-0825.2003.02906.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Platelet-derived growth factor (PDGF)-BB is a polypeptide growth factor which has been shown to stimulate periodontal regeneration. In this study, we investigated the time- and dose-dependent effect of PDGF-BB on the proliferation and collagen synthesis of human periodontal ligament (PDL) cells. MATERIALS AND METHODS For the proliferation assay, PDL cells were cultured in 0.01-10 ng ml(-1) of PDGF-BB for 12 or 24 h, and cell numbers were counted. For the collagen synthesis assay, PDL cells were cultured in 0.1-10 ng ml(-1) of PDGF-BB for 1 to 24 h. The ratio of collagen content in total protein was evaluated, and the gene expression of type I collagen was assessed quantitatively by Northern blotting analysis. RESULT AND CONCLUSIONS PDGF-BB stimulated the proliferation of PDL cells in a time- and dose-dependent manner with the maximum effect at 10 ng ml(-1). PDGF-BB induced the collagen synthesis of PDL cells with the maximum effect for 24-h treatment, and 1 ng ml(-1) of PDGF-BB. PDGF-BB exhibits an inverse dose-dependent effect on proliferation and collagen synthesis by PDL cells. These findings suggest that PDGF-BB is one of the important regulators of the maintenance of the extracellular matrix in PDL, and may play an important role in the regeneration of PDL.
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Affiliation(s)
- Y Ojima
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
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Mahmood J, Takita H, Ojima Y, Kobayashi M, Kohgo T, Kuboki Y. Geometric effect of matrix upon cell differentiation: BMP-induced osteogenesis using a new bioglass with a feasible structure. J Biochem 2001; 129:163-71. [PMID: 11134971 DOI: 10.1093/oxfordjournals.jbchem.a002828] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A new biocompatible glass, which is composed of CaO, P2O5, SiO2, and Al2O3 (abbreviated CPSA) and is characterized by higher elasticity than previous bioglass products, was molded into fibers with a diameter of 9 microm. With CPSA fibers, two geometrically different structures, balls and bundles (each 20 mg in weight), were prepared, combined with 2.2 microg of rhBMP-2 (a gift from Yamanouchi Co., Japan) and implanted subcutaneously into rats. The histology showed remarkably higher bone formation in the ball-CPSA/BMP at 2 and 4 weeks than in the bundle-CPSA/BMP. The ball-CPSA/BMP showed 10 times higher alkaline phosphatase (ALP) activity at the second week and 5 times higher osteocalcin content at the fourth week than the bundle-CSPA/BMP. Vascular development in the implants was evaluated by mRNA expression of Flt-1 and KDR, two receptors for vascular endothelial growth factor (VEGF). Both receptors showed higher expression in the case of the ball, while they were not detected in the bundle. It is concluded that the BMP-induced bone formation depends highly upon the porous vasculature-inducing geometry of the matrix, which can be constructed with the new CPSA fibers.
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Affiliation(s)
- J Mahmood
- Department of Oral Health Science, Graduate School of Dentistry, Hokkaido University, Kita-ku, Sapporo 060-8586, Japan.
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Abstract
We describe a 29-year-old woman with rheumatoid arthritis who suffered an acute myocardial infarction 70 days after an initial presentation with toxic epidermal necrolysis (TEN). The trigger for the TEN was probably an over-the-counter anti-influenza treatment containing tipepidine hibenzate. Although the patient had familial hypercholesterolemia, we believe that thrombocytosis, induced by the inflammatory response and metabolic stress resulting from the TEN, may also have played a significant role in the pathogenesis of the myocardial infarction. Although TEN manifests itself principally as a skin disease, the potential for systemic morbidity, including cardiovascular abnormalities, should also be remembered.
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Affiliation(s)
- S Hirakawa
- Department of Dermatology, Okayama University Medical School, Japan.
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Ojima Y, Nakatsuka H, Haneji H, Kurihara T, Sadamoto S, Ohmoto T, Katayama N, Taniyama K. Primary anorectal malignant melanoma: report of a case. Surg Today 1999; 29:170-3. [PMID: 10030744 DOI: 10.1007/bf02482244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Primary anorectal malignant melanoma is a fairly uncommon but highly malignant disease. This disease is sometimes mistaken for such benign conditions as either a hemorrhoid or rectal polyp. We herein describe a case of early primary malignant melanoma of the anal canal. In this case, magnetic resonance (MR) imaging was found to be useful for diagnosing the melanotic melanoma. We especially emphasize the usefulness of a fat-saturation MR image in distinguishing melanotic melanoma from other rectal tumors.
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Affiliation(s)
- Y Ojima
- Department of Surgery, Kure City Medical Association Hospital, Hiroshima, Japan
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Asahara T, Kikkawa M, Okajima M, Ojima Y, Toyota K, Nakahara H, Katayama K, Itamoto T, Marubayashi S, One E, Yahata H, Dohi K, Azuma K, Ito K. Studies of postoperative transarterial infusion chemotherapy for liver metastasis of colorectal carcinoma after hepatectomy. Hepatogastroenterology 1998; 45:805-11. [PMID: 9684138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND/AIMS The aim of this study was to evaluate the efficacy of postoperative transarterial infusion chemotherapy (PTIC) for the prevention of metastatic liver cancer recurrence after hepatectomy following curative surgery for colorectal carcinoma. METHODOLOGY Thirty-eight patients who underwent curative hepatectomy for metastatic liver cancer from colorectal carcinoma were studied. Ten out of the 38 patients received PTIC (experimental group) and 28 patients did not receive chemotherapy (control group). PTIC was performed with an intrahepatic indwelling catheter, which was set-up for 3 weeks and repeated 3 times in two monthly intervals. RESULTS In the control group, no significant differences were observed in the survival between patients with a single hepatic nodule and those with multiple hepatic nodules. Between patients with hepatic tumors of more than 3 cm in diameter and those with tumors less than 3 cm, and between patients with tumors located at H1 and H2, no significant differences were seen, either. However, the 5-year survival rate of the patients with metachronous liver metastases was 90% which was significantly better than for those patients with synchronous liver tumors (p < 0.05). The 100% of 3- and 100% of 4-year survival rates of the experimental group were significantly better than the 60% and 47% respectively of the control group (p < 0.05). The non-recurrence rate in the remnant liver was also significantly better in the experimental group than that in the control group (p < 0.01). The adverse effect of this protocol was negligible. CONCLUSION We conclude that PTIC improved the survival and non-recurrence rate in the remnant liver of the patients with liver metastases from colorectal cancer after hepatectomy, and was considered to be safe and an important protective factor for the prevention of recurrence of liver metastases after hepatectomy.
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Affiliation(s)
- T Asahara
- Second Department of Surgery, Hiroshima University School of Medicine, Japan
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20
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Shiraga F, Ojima Y, Matsuo T, Takasu I, Matsuo N. Feeder vessel photocoagulation of subfoveal choroidal neovascularization secondary to age-related macular degeneration. Ophthalmology 1998; 105:662-9. [PMID: 9544641 DOI: 10.1016/s0161-6420(98)94021-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
PURPOSE This study aimed to assess the feasibility of laser photocoagulation of feeder vessels of subfoveal choroidal neovascularization (CNV) secondary to age-related macular degeneration. PATIENTS AND METHODS Of 170 consecutive patients with subfoveal CNV secondary to age-related macular degeneration, feeder vessels were detected in 37 patients by means of indocyanine green videoangiography using a scanning laser ophthalmoscope. Dye laser photocoagulation was applied to extrafoveal feeder vessels, with the fovea spared. RESULTS Twenty-six (70%) of those 37 patients had complete resolution of exudative manifestations. Persistent or worsened manifestations were seen in 11 patients (30%) because of recurrent CNV or persistent CNV. The visual acuity improved or stabilized in 25 patients (68%). Ten patients (27%) had a final visual acuity of 20/40 or better and six patients (16%) had a final visual acuity of 20/50 to 20/100. Significant factors prognostic of the visual outcome of 20/100 or better were small CNV (2 disc areas or smaller, Fisher's exact probability test, P = 0.041), the absence of white, fibrous tissue in neovascular membranes (Fisher's exact probability test, P = 0.003), and the closest distance of laser burns to the center of the foveal avascular zone (Fisher's exact probability test, P = 0.049). Preoperative visual acuity had a significant positive correlation with final visual acuity (Spearman's rank correlation test, P = 0.0076). CONCLUSION Feeder vessel photocoagulation should be considered as a treatment option for subfoveal CNV secondary to age-related macular degeneration, because no other treatment method has a better visual outcome.
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Affiliation(s)
- F Shiraga
- Department of Ophthalmology, Okayama University Medical School, Japan
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21
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Toyota K, Okajima M, Ojima Y, Asahara T, Dohi K. Motility of the canine pyloric ring following a pylorus-preserving pancreatoduodenectomy. J Smooth Muscle Res 1998; 34:35-43. [PMID: 9868700 DOI: 10.1540/jsmr.34.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Recently, function-preserving operations have become popular, and pylorus-preserving pancreatoduodenectomy (PPPD) is frequently performed for diseases of the head of the pancreas. However, there are only a few basic studies on the pyloric function after PPPD. Using strain gauge force transducers (SGTs), we studied the pyloric motility of normal and PPPD dogs. We prepared three normal and three PPPD dogs in which the SGTs were implanted onto the antrum and pyloric ring, etc. In conscious dogs, the spontaneous gastrointestinal motility was recorded, and the plasma motilin concentration was measured during the interdigestive state. Following the administration of exogenous Leu13-motilin, the motility was again recorded. The relaxation and opening of the pyloric ring was observed synchronously with intense contractions of the antrum during the phase III of normal dogs. Phase III-like motility was recorded in the PPPD dogs, which was not a typical periodic motility. The plasma motilin concentration of one PPPD dog could be measured, and the motilin levels during the phase III-like motility were higher than during phase I. The phase III-like motility was induced by Leu13-motilin in both normal and PPPD dogs. The phase III-like motility recorded in the PPPD dogs was not a typical periodic one, and this aberrant motility was considered to be one of the causes of delayed gastric emptying. Phase III-like motility was induced by the administration of Leu13-motilin; therefore, it is possible that Leu13-motilin improved the motility of the pyloric ring after PPPD.
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Affiliation(s)
- K Toyota
- Second Department of Surgery, Hiroshima University School of Medicine, Japan
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22
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Hayashi M, Ueda T, Uyeno K, Wada K, Kinae N, Saotome K, Tanaka N, Takai A, Sasaki YF, Asano N, Sofuni T, Ojima Y. Development of genotoxicity assay systems that use aquatic organisms. Mutat Res 1998; 399:125-33. [PMID: 9672655 DOI: 10.1016/s0027-5107(97)00251-0] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Our aim is to develop and evaluate monitoring systems that use aquatic organisms to assess the genotoxicity of water in the field and in the laboratory. In a field study, we have shown that the micronucleus assay is applicable to freshwater and marine fishes and that gill cells are more sensitive than hematopoietic cells to micronucleus-inducing agents. Gill cells from Carassius sp. (Funa) and Zacco platypus (Oikawa) collected upstream on the Tomio River (Nara, Japan), tended to have lower micronucleus frequencies than gill cells from fish collected at the midstream of the river. Leiognathus nuchalis (Hiiragi) and Ditrema temmincki (Umitanago), small marine fishes collected periodically at Mochimune Harbor (Shizuoka, Japan), showed seasonal differences in the frequencies of micronucleated gill cells and erythrocytes; they were highest in summer. For laboratory studies, we developed a method for analyzing chromosomal aberrations and micronuclei using Rhodeus ocellatus ocellatus (rose bitterling) embryos. One day after artificial insemination (gastrula stage), we observed structural chromosomal aberrations and micronuclei in the cells of embryos grown in water containing trichloroethylene. Although more work is needed to fully assess their sensitivity, these assays show promise as a means of detecting environmental genotoxins.
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Affiliation(s)
- M Hayashi
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, Tokyo, Japan
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23
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Ojima Y, Okajima M, Asahara T, Arita M, Kobayashi R, Nakahara M, Masaoka Y, Toyota K, Fujitaka T, Kawahori K, Shimamoto F, Dohi K. Inflammatory fibroid polyp of the ileum with the appearance of a Borrmann type II lesion, caused by colostomy irrigation: report of a case. Surg Today 1997; 27:1061-3. [PMID: 9413061 DOI: 10.1007/bf02385789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Inflammatory fibroid polyps (IFPs) are rarely found in the gastrointestinal tract. The majority of IFPs are sessile-pedunculated or pedunculated polypoid lesions, whereas a polyp presenting like a Borrmann type II lesion is extremely unusual. This report describes the case of a 74-year-old man with a history of intussusception, in whom a preoperative diagnosis of a cecal tumor of the ileocecal valve was made. A laparotomy subsequently revealed a lesion similar to a Borrmann type II tumor located 15 cm above the ileocecal valve, but not at the valve. The lesion was diagnosed as an IFP which had been caused by repeated colostomy irrigation. The aim of the present report is to draw attention to this entity, which should be included in the differential diagnosis of intussusception and small bowel obstruction.
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Affiliation(s)
- Y Ojima
- Second Department of Surgery, Hiroshima University School of Medicine, Japan
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24
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Ojima Y, Okajima M, Toyota K, Arita M, Kobayashi R, Masaoka Y, Nakahara M, Kawahori K, Asahara T, Dohi K. Effects of nitric oxide on canine gastrointestinal motility. J Smooth Muscle Res 1995; 31:456-8. [PMID: 8867971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Y Ojima
- Second Department of Surgery, Hiroshima University School of Medicine
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25
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Toyota K, Okajima M, Ojima Y, Arita M, Kobayashi R, Nakahara M, Masaoka Y, Kawahori K, Asahara T, Dohi K. A study of pyloric function after pylorus-preserving pancreatoduodenectomy in the canine model. J Smooth Muscle Res 1995; 31:383-6. [PMID: 8867940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- K Toyota
- Second Department of Surgery, Hiroshima University School of Medicine
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26
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Abstract
Tailgut cysts are rare congenital lesions. To date, only four cases have been reported in Japan, and the occurrence of a tailgut cyst with rectal cancer has never been documented. We describe here the case of a patient in whom a tailgut cyst in the retrorectal space was associated with rectal cancer. Preoperative computed tomography scans and endorectal ultrasonography failed to identify the lesion as cystic, instead suggesting an involved lymph node. This case emphasizes the necessity for careful diagnosis of masses in the retrorectal space in patients with rectal cancer.
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Affiliation(s)
- T Fujitaka
- Second Department of Surgery, Hiroshima University School of Medicine, Japan
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27
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Takahashi S, Sato T, Ito A, Ojima Y, Hosono T, Nagase H, Mori Y. Involvement of protein kinase C in the interleukin 1 alpha-induced gene expression of matrix metalloproteinases and tissue inhibitor-1 of metalloproteinases (TIMP-1) in human uterine cervical fibroblasts. Biochim Biophys Acta 1993; 1220:57-65. [PMID: 8268245 DOI: 10.1016/0167-4889(93)90097-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The role of protein kinase C in the interleukin 1 (IL-1)-mediated production of pro-matrix metalloproteinases (proMMPs) and tissue inhibitor-1 of metalloproteinases (TIMP-1) in human uterine cervical fibro-blasts has been investigated. IL-1 and a protein kinase C activator, 12-O-tetradecanoylphorbol 13-acetate (TPA) augmented the production of proMMP-1 (interstitial procollagenase), proMMP-3 (prostromelysin-1) and TIMP-1, but their effects were inhibited by the protein kinase C inhibitors 1-(5-isoquinolinesulfonyl)-2-methylpiperazine dihydrochloride (H-7) and staurosporine in a dose-dependent manner. The suppressive effect of H-7 and staurosporine on the IL-1-induced production of proMMPs-1 and -3 and TIMP-1 resulted from the decrease in the steady-state levels of their mRNAs. When protein kinase C was down-regulated by treating the cells with a high level of TPA, the inductive effect of IL-1 upon proMMP-3 production was reduced considerably. These results indicate that protein kinase C mediates the IL-1-induced production of proMMPs-1 and -3 and TIMP-1 at the pretranslational level in human uterine cervical fibroblasts. On the other hand, neither IL-1 nor TPA modulated the production of proMMP-2 (progelatinase A). Both IL-1 and TPA also accelerated the production of prostaglandin E2 (PGE2) by cervical fibroblasts. However, the treatment of the cells with staurosporine in the presence of IL-1 or TPA further augmented PGE2 synthesis, suggesting that the increased synthesis of PGE2 by IL-1 treatment is mediated via signalling pathways distinct from those of proMMPs-1 and -3 and TIMP-1.
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Affiliation(s)
- S Takahashi
- Department of Biochemistry, Tokyo College of Pharmacy, Japan
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28
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Hoshino S, Kimura A, Fukuda Y, Hori H, Satoh Y, Ojima Y, Shintaku T, Sasazuki T, Dohi K. A simple and practical test of HLA-DRB and -DQB matching in transplantation. Transplant Proc 1993; 25:191-3. [PMID: 8438269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- S Hoshino
- Second Department of Surgery, Hiroshima University School of Medicine, Japan
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29
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Ito A, Sato T, Ojima Y, Chen LC, Nagase H, Mori Y. Calmodulin differentially modulates the interleukin 1-induced biosynthesis of tissue inhibitor of metalloproteinases and matrix metalloproteinases in human uterine cervical fibroblasts. J Biol Chem 1991; 266:13598-601. [PMID: 1649824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The effects of a specific calmodulin inhibitor, N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7) on the synthesis of tissue inhibitor of metalloproteinases (TIMP) and precursor of matrix metalloproteinase 1/tissue collagenase (proMMP-1) and matrix metalloproteinase 3/stromelysin (proMMP-3), were examined using human uterine cervical fibroblasts in culture. When the cells were treated with human recombinant interleukin 1 alpha, the synthesis of TIMP, proMMP-1, and proMMP-3 was greatly enhanced along with the increase in the steady-state levels of mRNAs for respective proteins. The treatment of the cells with human recombinant interleukin 1 alpha and W-7 further augmented the production of proMMPs-1 and -3 and the accumulation of their mRNAs. In contrast, TIMP production and its steady-state mRNA level were reduced considerably under these conditions. Similar observations were made with another calmodulin inhibitor, trifluoperazine, but not with N-(6-aminohexyl)-1-naphthalenesulfonamide, the weakest inhibitor for calmodulin. These results indicate that calmodulin is required for the interleukin 1-enhanced synthesis of TIMP but it is a suppressor for the synthesis of proMMPs-1 and -3.
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Affiliation(s)
- A Ito
- Department of Biochemistry, Tokyo College of Pharmacy, Japan
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30
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Ito A, Sato T, Ojima Y, Chen L, Nagase H, Mori Y. Calmodulin differentially modulates the interleukin 1-induced biosynthesis of tissue inhibitor of metalloproteinases and matrix metalloproteinases in human uterine cervical fibroblasts. J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)92741-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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31
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Ojima Y, Ito A, Nagase H, Mori Y. Calmodulin regulates the interleukin 1-induced procollagenase production in human uterine cervical fibroblasts. Biochim Biophys Acta 1989; 1011:61-6. [PMID: 2538148 DOI: 10.1016/0167-4889(89)90079-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Interleukin 1 (IL-1) stimulates the synthesis of collagenase in human uterine cervical fibroblasts. This inductive effect of IL-1 on collagenase production was augmented by N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7), a specific inhibitor of calmodulin, in a dose-dependent manner. The apparent collagenase activity observed in the culture medium of the cells treated with IL-1 and 40 microM W-7 was about three times higher than that produced by the cells treated with IL-1 alone. The immunoblotting with the specific antibody against human collagenase showed that the increased collagenase activity resulted from the accelerated biosynthesis of collagenase. Another calmodulin inhibitor, trifluoperazine, enhanced the effect of IL-1 on collagenase production similarly. However, the effect of N-(6-aminohexyl)-1-naphthalenesulfonamide, the weakest inhibitor of calmodulin, was negligible. These results suggest that W-7 enhances the collagenase production by specifically inhibiting calmodulin and that calmodulin may act as a suppressor of the IL-1-induced collagenase production in human uterine cervical fibroblasts.
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Affiliation(s)
- Y Ojima
- Department of Biochemistry, Tokyo College of Pharmacy, Japan
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32
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Abstract
Uterine cervical explants in culture from pregnant rabbits at term spontaneously synthesized and secreted three species of interleukin-1-like factors in culture medium. The addition of the exogenous mitogen lipopolysaccharide to the culture system induced further release of these factors. However, these phenomena were not observed with explants from nonpregnant cervices. The molecular weights of these factors estimated by gel filtration were approximately 49, 22, and 12 kDa, respectively, and were identical to those of interleukin-1 from rabbit macrophages and polymorphonuclear leukocytes. These results indicate that interleukin-1-like factors are involved in cervical ripening and dilatation, especially in the acceleration of collagenase production, at term.
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Affiliation(s)
- A Ito
- Department of Biochemistry, Tokyo College of Pharmacy, Japan
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33
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Ojima Y, Kato M, Okuyama T, Masuzawa M, Matsuo S. [A case of cholangioma showing elevated serum AFP and hypercalcemia]. Nihon Shokakibyo Gakkai Zasshi 1984; 81:1634-7. [PMID: 6208397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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34
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Chiba A, Honma Y, Yoshie S, Ojima Y. Histological observation of some of the endocrine glands in the sterile carp-funa hybrid (F1), with special reference to the hypophysis. Arch Histol Jpn 1979; 42:305-18. [PMID: 539886 DOI: 10.1679/aohc1950.42.305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Some endocrine glands of the carp-funa hybrids were studied with a light microscope to elucidate their detailed structure and the possible causal factor of sterility in the males. Adult specimens of carp (Cyprinus carpio), gengoroh-buna (Carassius auratus cuvieri), and their hybrid (F1) were examined. The hybrid males are sterile as manifested by the failure of meiosis and seminomatous neoplasm in their testes. The hybrid females revealed well-developed ovaries, but their fertility was not tested. The hybrid hypophysis shows an intermediate condition between the parent species in the grade of ramification of the pars nervosa into the pars intermedia. Among seven types of granular cells demonstrated in the adenohypophysis, certain degenerative and anomalous changes are recognized only in the gonadotrophs of the hybrid hypophysis, especially in the female. These changes are discussed as a possible cause of sterility. A considerable amount of aldehyde fuchsin stainable neurosecretory material occurs in the cells of the nucleus preopticus and in the pars nervosa. The nucleus lateralis tuberis exhibits a histologically healthy condition.
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35
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Mori S, Ojima Y, Hirose T, Sasaki T, Hashimoto Y. The clinical effect of proteolytic enzyme containing bromelain and trypsin on urinary tract infection evaluated by double blind method. Acta Obstet Gynaecol Jpn 1972; 19:147-53. [PMID: 4587187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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36
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Anderson LL, Collins GJ, Ojima Y, Sullivan RD. A study of the distribution of methotrexate in human tissues and tumors. Cancer Res 1970; 30:1344-8. [PMID: 5426936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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37
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Ojima Y, Anderson LL, Collins GJ, Oberfield RA, Sullivan RD. Pharmacologic studies of methotrexate in cancer patients with uropathy. Arch Surg 1970; 100:173-7. [PMID: 5411410 DOI: 10.1001/archsurg.1970.01340200061014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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38
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Ojima Y, Takayama S, Kato F, Hitotsumachi S. Heterotransplantation of a mouse ascites tumor in rats. Gan 1969; 60:329-32. [PMID: 5346016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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39
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Kobayashi J, Morimoto Y, Kawano S, Ojima Y, Kawamura F. Radiosensitivity of mamalian cells. II. Distribution of DNA content in nuclei of Ehrlich tumor cells after irradiation. Tokushima J Exp Med 1968; 15:151-6. [PMID: 5712575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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40
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Ojima Y, Sullivan RD. Pharmacology of methotrexate in the human central nervous system. Surg Gynecol Obstet 1967; 125:1035-40. [PMID: 5630481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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41
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Sullivan RD, Miller E, Zurek WZ, Oberfield RA, Ojima Y. Re-evaluation of methotrexate as an anticancer drug. Surg Gynecol Obstet 1967; 125:819-24. [PMID: 6041727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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