1
|
Tomita S, Nagai K, Matsunaga N, Kerckhove MD, Fujii M, Terao Y. Detailed Analysis of Three Major Breast Reconstructions Using BREAST-Q Responses From 1001 Patients. Aesthet Surg J 2023; 43:NP888-NP897. [PMID: 37392431 DOI: 10.1093/asj/sjad205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Patient-reported outcomes have become as important as mortality and morbidity in the postoperative evaluation of breast reconstruction surgery. The BREAST-Q is one of the most widely used patient-reported outcomes for breast reconstruction. OBJECTIVES A comparative analysis of the scores on each of the BREAST-Q modules could help analyze different reconstruction methods. However, few studies have utilized BREAST-Q for this purpose. The aim of this study was therefore to compare breast reconstruction methods in terms of BREAST-Q module ratings. METHODS The authors retrospectively reviewed the data of 1001 patients who had been followed for more than 1 year after breast reconstruction. The 6 BREAST-Q modules were rated on a scale of 0 to 100 and statistically analyzed by multiple regression. In addition, Fisher's exact test was performed after dividing the responses to each question into high- and low-rating groups. RESULTS Microvascular abdominal flap reconstruction scored significantly better than implant-based reconstruction on all modules, except psychosocial and sexual well-being. In terms of satisfaction with the breast, latissimus dorsi flap reconstruction was superior to implant-based reconstruction. However, in terms of the reconstruction method, there were no differences in patients' willingness to make the same choice again or whether they regretted having surgery. CONCLUSIONS The results highlight the superiority of autologous breast reconstruction. Reconstruction methods should only be performed after a thorough explanation of their characteristics to achieve results that meet patient expectations. The findings are useful for facilitating patient decision-making in breast reconstruction. LEVEL OF EVIDENCE: 4
Collapse
|
2
|
de Kerckhove M, Matsunaga N, Tomita S, Fujii M, Terao Y. Tertiary Autologous Breast Reconstruction After Implant-Based Reconstruction: Safety and Patient-Related Outcomes. J Plast Reconstr Aesthet Surg 2023; 79:47-54. [PMID: 36868171 DOI: 10.1016/j.bjps.2023.01.016] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/29/2023] [Indexed: 02/10/2023]
Abstract
Silicone breast implants are popularly used for breast reconstruction. As more patients receive long-term silicone breast implants, the number of replacement operations will also increase, and some patients prefer to change from silicone breast implantation to tertiary autologous reconstruction. We evaluated the safety of tertiary reconstruction and assessed patient views regarding the two reconstruction methods. We retrospectively analyzed patient backgrounds, surgical characteristics, and silicone breast implantation retention periods until tertiary reconstruction. We designed an original questionnaire to assess patient opinion regarding silicone breast implantation and tertiary reconstruction. Twenty-three patients (24 breasts) with decisive factors of patient-initiated elective surgery (n = 16), contralateral breast cancer occurrence (n = 5), or late-onset infection (n = 2) underwent tertiary reconstruction. The median time from silicone breast implantation to tertiary reconstruction was significantly shorter in patients with metachronous cancer (47 months) than that in those undergoing elective surgery (92 months). Complications included partial flap loss (n = 1), seroma (n = 6), hematoma (n = 5), and infection (n = 1). Total necrosis did not occur. Twenty-one patients responded to the questionnaire. The satisfaction score was significantly higher for abdominal flaps than for silicone breast implants. When presented with the option to select the initial reconstruction method again, 13 of 21 respondents chose silicone breast implantation. Tertiary reconstruction is beneficial because it reduces clinical symptoms and cosmetic complaints and is recommended as a bilateral reconstruction method, especially for patients with metachronous breast cancer. However, silicone breast implants, which are minimally invasive and associated with shorter hospital stays, were simultaneously found to be sufficiently attractive to patients.
Collapse
Affiliation(s)
- Maiko de Kerckhove
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo, Japan.
| | - Noriko Matsunaga
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Shoichi Tomita
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Miwako Fujii
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo, Japan
| | - Yasunobu Terao
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
3
|
Hidaka M, Soyama A, Hashizume J, Hara T, Matsunaga N, Matsushima H, Tanaka T, Hamada T, Imamura H, Adachi T, Kanetaka K, Ohyama K, Eguchi S. The Effects of Vonoprazan Fumarate on the Tacrolimus Blood Concentration in Liver Transplant Recipients. Cancer Diagn Progn 2022; 2:553-557. [PMID: 36060027 PMCID: PMC9425576 DOI: 10.21873/cdp.10141] [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: 06/09/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND/AIM The proton pump inhibitors were reported to affect the blood concentration of tacrolimus. Vonoprazan fumarate is a new acid suppressant with potent acid inhibitory effects. There have been no reports concerning the effect of vonoprazan on the tacrolimus blood concentration in liver transplant (LT) recipients. PATIENTS AND METHODS Eighteen living donor liver transplantation (LDLT) recipients who switched from proton pump inhibitors (PPIs) to vonoprazan between 2016 to 2018 were enrolled in this retrospective study. We investigated blood levels of tacrolimus, and liver and renal function before and after the change from PPIs to vonoprazan. RESULTS The median C 0 /D of tacrolimus before conversion, 3 months after conversion, and 6 months after conversion were 2.33, 1.53, and 1.89, respectively, and there was no significant difference. Conversion from another PPI to vonoprazan was not associated with a worsening liver function. The estimated glomerular filtration rate was significantly worse after conversion. CONCLUSION Vonoprazan can be safely administered to LT recipients receiving tacrolimus during the stable period.
Collapse
Affiliation(s)
- Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Akihiko Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Junya Hashizume
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Takanobu Hara
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Noriko Matsunaga
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Hajime Matsushima
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takayuki Tanaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takashi Hamada
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hajime Imamura
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tomohiko Adachi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kengo Kanetaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kaname Ohyama
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| |
Collapse
|
4
|
Tomita S, Matsunaga N, Fujita Y, de Kerckhove M, Fujii M, Honda Y, Tokisawa H, Aruga T, Terao Y. Safety evaluation of immediate breast reconstruction for locally advanced breast cancer in Japanese patients. J Plast Reconstr Aesthet Surg 2022; 75:2526-2534. [PMID: 35599220 DOI: 10.1016/j.bjps.2022.04.021] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/27/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND While breast reconstruction often improves the quality of life of patients with locally advanced breast cancer, there is still no consensus on its safety. This retrospective report aimed to verify the safety of immediate breast reconstruction for locally advanced breast cancer. METHODS We retrospectively analyzed 500 breast cancer surgeries performed between January 2005 and December 2019 at our hospital, including 120 immediate breast reconstructions. The following five items were analyzed: the patients' choice of reconstruction method, rate of chemotherapy and radiotherapy, surgical margin positivity rate, complications associated with surgery, overall survival rate, and breast cancer-free survival rate. RESULTS Sixty-three of the 120 patients underwent autologous breast reconstruction. Of those who underwent reconstruction surgery, 95.8% received chemotherapy and 78.3% underwent post-mastectomy radiation therapy. Reconstruction failed in 8 cases with tissue expander and in 1 case with free TRAM flap. Breast reconstruction surgery was not a factor in delaying adjuvant therapy, but complications requiring intervention tended to increase the duration of adjuvant therapy. There was no statistically significant difference in the rate of surgical margin positivity, overall survival rate, or breast cancer-free survival rate. CONCLUSIONS Although complications associated with reconstructive surgery occurred, appropriate intervention prevented delays in breast cancer treatment, and the complications did not negatively affect the overall or breast cancer-free survival rates. Our study found no evidence to avoid primary breast reconstruction in patients with locally advanced breast cancer.
Collapse
Affiliation(s)
- Shoichi Tomita
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan.
| | - Noriko Matsunaga
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Yoshihiko Fujita
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Maiko de Kerckhove
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Miwako Fujii
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Yayoi Honda
- Department of Breast Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Hiromi Tokisawa
- Department of Breast Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Tomoyuki Aruga
- Department of Breast Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Yasunobu Terao
- Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| |
Collapse
|
5
|
Tsuzuki S, Yu J, Matsunaga N, Ohmagari N. Length of stay, hospitalisation costs and in-hospital mortality of methicillin-susceptible and methicillin-resistant Staphylococcus aureus bacteremia in Japan. Public Health 2021; 198:292-296. [PMID: 34507134 DOI: 10.1016/j.puhe.2021.07.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/29/2021] [Accepted: 07/30/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To examine the length of stay, hospitalisation costs and case fatality of methicillin-susceptible and -resistant Staphylococcus aureus (MSSA and MRSA) bacteremia in Japan. STUDY DESIGN Retrospective cohort study. Patients with a diagnosis of S. aureus bacteremia who were admitted to a tertiary care hospital (the National Centre for Global Health and Medicine [NCGM]) in Tokyo, Japan, between 1st January 2016 and 31st December 2020 were included in the study. METHODS We combined Japan Nosocomial Infections Surveillance data and Diagnosis Procedure Combination data at NCGM from 2016 to 2020. The data were stratified into MSSA and MRSA groups. Length of stay (LoS), LoS after submission of a blood culture specimen (LoS-after), hospitalisation cost, hospitalisation costs per day and clinical outcome were compared after propensity score matching. RESULTS Median LoS was 46 (interquartile range [IQR] 28.5-64.5) days in the MSSA group and 66 (IQR 40-91) days in the MRSA group (P = 0.020). Median LoS-after was 38 (IQR 25-62.5) days and 45 (IQR 24-63) days (P = 0.691) in the MSSA and MRSA groups, respectively. Median hospitalisation cost was significantly higher in the MRSA group (26,035 [IQR 18,154-47,362] USD) than in the MSSA group (19,823 [IQR 13,764-32,042] USD) (P = 0.036), but cost per day was not (MRSA: 528.9 [IQR 374.9-647.4] USD; MSSA: 455.6 [IQR 359.2-701.7] USD; P = 0.990). Case fatality rate was higher in the MRSA group than in the MSSA group (22/60 vs 9/60, P = 0.012). CONCLUSIONS Patients with MRSA bacteremia had longer LoS and higher costs than those with MSSA bacteremia. However, LoS-after and hospitalisation costs per day were not different. The longer LoS of patients in Japan compared with other countries might contribute to the higher disease burden of S. aureus bacteremia in Japan.
Collapse
Affiliation(s)
- S Tsuzuki
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
| | - J Yu
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - N Matsunaga
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - N Ohmagari
- AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan; Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| |
Collapse
|
6
|
Mitsuya S, Tsuruoka K, Kanaoka K, Funamoto T, Tsuji H, Matsunaga N, Nakamura T, Tamura Y, Imanishi M, Ikeda S, Fujisaka Y, Goto I. P76.23 A Retrospective Study of Non-Small Cell Lung Cancer Treated with Second- and Third-Generation EGFR Tyrosine Kinase Inhibitors. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1080] [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: 10/21/2022]
|
7
|
Lee M, Matsunaga N, Akabane S, Yasuda I, Ueda T, Takeuchi-Tomita N. Reconstitution of mammalian mitochondrial translation system capable of correct initiation and long polypeptide synthesis from leaderless mRNA. Nucleic Acids Res 2021; 49:371-382. [PMID: 33300043 PMCID: PMC7797035 DOI: 10.1093/nar/gkaa1165] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 12/31/2022] Open
Abstract
Mammalian mitochondria have their own dedicated protein synthesis system, which produces 13 essential subunits of the oxidative phosphorylation complexes. We have reconstituted an in vitro translation system from mammalian mitochondria, utilizing purified recombinant mitochondrial translation factors, 55S ribosomes from pig liver mitochondria, and a tRNA mixture from either Escherichia coli or yeast. The system is capable of translating leaderless mRNAs encoding model proteins (DHFR and nanoLuciferase) or some mtDNA-encoded proteins. We show that a leaderless mRNA, encoding nanoLuciferase, is faithfully initiated without the need for any auxiliary factors other than IF-2mt and IF-3mt. We found that the ribosome-dependent GTPase activities of both the translocase EF-G1mt and the recycling factor EF-G2mt are insensitive to fusidic acid (FA), the translation inhibitor that targets bacterial EF-G homologs, and consequently the system is resistant to FA. Moreover, we demonstrate that a polyproline sequence in the protein causes 55S mitochondrial ribosome stalling, yielding ribosome nascent chain complexes. Analyses of the effects of the Mg concentration on the polyproline-mediated ribosome stalling suggested the unique regulation of peptide elongation by the mitoribosome. This system will be useful for analyzing the mechanism of translation initiation, and the interactions between the nascent peptide chain and the mitochondrial ribosome.
Collapse
Affiliation(s)
- Muhoon Lee
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Noriko Matsunaga
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Shiori Akabane
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan.,Department of Life Science, Rikkyo University, Tokyo, 171-8501, Japan
| | - Ippei Yasuda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| | - Takuya Ueda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Science and Engineering, Waseda University, Tokyo, Shinjuku 162-8480, Japan
| | - Nono Takeuchi-Tomita
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa-shi, Chiba 277-8562, Japan
| |
Collapse
|
8
|
Kotake Y, Matsunaga N. The regulation of INK4 locus by long non-coding RNAs. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz238.038] [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: 11/12/2022] Open
|
9
|
Tsuzuki S, Matsunaga N, Hayakawa K, Suzuki Y, Noda A, Yamagishi K, Yahara K, Tsutsui A, Shibayama K, Noda H, Omagari N, Nishiura H. The recent trend of MRSA surveillance in Japanese health care facilities. Int J Infect Dis 2019. [DOI: 10.1016/j.ijid.2018.11.131] [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: 11/16/2022] Open
|
10
|
Matsunaga N, Kitahara T, Yamada M, Sato K, Kodama Y, Sasaki H. The influence of light sources on sunitinib measurements with photoisomerization. Biomed Chromatogr 2018; 33:e4407. [PMID: 30315654 DOI: 10.1002/bmc.4407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 09/18/2018] [Accepted: 10/04/2018] [Indexed: 11/06/2022]
Abstract
Sunitinib is an orally administered tyrosine kinase inhibitor. Therapeutic drug monitoring is an important component of the follow-up of patients because of high interpatient variability in the pharmacokinetics of sunitinib and large variabilities in its efficacy and toxicity. The aim of the present study was to examine the light stability of sunitinib and confirm the effects of light exposure on sunitinib measurements by LC-MS/MS. Sunitinib and its active metabolite, SU12662, convert Z isomers to E isomers with exposure to light. The Z-E photoisomerization ratio reached a plateau at 35% for both E isomers in methanol within 15 min of normal light exposure (700 lx). However, the Z isomer of the sunitinib and SU12662 peak area ratios in plasma decreased by 10% within 15 min. These results suggest that sunitinib samples need to be handled without light exposure in all sample preparation steps. Alternatively, it should be measured sunitinib and SU12662 after the sample has reached photoisomerical equilibrium. These results suggest that the sunitinib therapeutic range changes depending on light conditions during sample handling in sunitinib and SU12662 measurements.
Collapse
Affiliation(s)
- Noriko Matsunaga
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Takashi Kitahara
- Clinical Pharmacology, Graduate School of Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Makiko Yamada
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Kayoko Sato
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Yukinobu Kodama
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| | - Hitoshi Sasaki
- Department of Hospital Pharmacy, Nagasaki University Hospital, Nagasaki, Japan
| |
Collapse
|
11
|
Ohba K, Miyata Y, Yasuda T, Asai A, Mitsunari K, Matsuo T, Mochizuki Y, Matsunaga N, Sakai H. Efficacy and safety of sunitinib alternate day regimen in patients with metastatic renal cell carcinoma in Japan: Comparison with standard 4/2 schedule. Asia Pac J Clin Oncol 2018; 14:153-158. [DOI: 10.1111/ajco.12849] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 11/18/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Kojiro Ohba
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Yasuyoshi Miyata
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Takuji Yasuda
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Akihiro Asai
- Department of Urology; The Japanese Red Cross Nagasaki Genbaku Hospital; Nagasaki Japan
| | | | - Tomohiro Matsuo
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Yasushi Mochizuki
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Noriko Matsunaga
- Department of Hospital Pharmacy; Nagasaki University Hospital; Nagasaki Japan
| | - Hideki Sakai
- Department of Urology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| |
Collapse
|
12
|
Suga K, Yuan Y, Ogasawara N, Okada M, Matsunaga N. Localization of breast sentinel lymph nodes by MR lymphography with a conventional gadolinium contrast agent: Preliminary observations in dongs and humans. Acta Radiol 2016. [DOI: 10.1258/rsmacta.44.1.35] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose: To test the capability of an indirect MR lymphography (MRLG) using a conventional extracellular gadolinium (Gd)-based contrast agent for localizing breast sentinel lymph node (SLN). Methods: A total of 1 and 0.5 ml of undiluted gadopentetate dimeglumine were injected subcutaneously into the two periareolar areas overlying each caudal mammary gland in 10 female dogs. Contiguous 2-mm-thick fast gradient echo MR images were acquired through the upper breast and axilla before and for 60 min after gentle massage at the injection sites, yielding 3D displays. The localized SLN was resected from the living animals, followed by post mortem examinations. MRLG (1 ml contrast agent injected) was also attempted in 5 female volunteers. Results: Even with 0.5-ml contrast agent, the MRLG clearly visualized the connection of SLN and lymphatic vessels directly draining from the injection sites, and the remaining distant nodes, with the maximal enhancement peaks within 10 min after massage. The 3D images provided comprehensive anatomy of these lymphatic pathways in each axilla. Of the 20 SLN and 128 distant nodes visualized on the MRLG, all the SLN (100%) and 107 (83.5%) distant nodes could be resected pre- and post mortem, in good correlation with the locations and sizes on the MR images. MRLG also effectively localized SLN in the volunteers, without significant adverse effects. Conclusion: An indirect MRLG using small volumes of conventional Gd-based contrast agent may have potential for accurate identification and surgical biopsy of breast SLN.
Collapse
Affiliation(s)
- K. Suga
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - Y. Yuan
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - N. Ogasawara
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - M. Okada
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - N. Matsunaga
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| |
Collapse
|
13
|
Matsunaga N, Hayashi K, Aikawa H, Uetani M, Iwao M, Matsuoka Y, Hombo A, Fukushima T, Maeda H. Digital Subtraction Angiography in Takayasu Arteritis. Acta Radiol 2016. [DOI: 10.1177/028418518702800305] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The usefulness and limitation of digital subtraction angiography (DSA) in Takayasu arteritis were investigated in 32 patients. Intravenous DSA was particularly useful in the follow-up of patients with an established diagnosis of Takayasu arteritis. Pulmonary arterial involvement could also be demonstrated with intravenous DSA as obstructive arterial changes and lack of accumulation of contrast medium in the pulmonary parenchyma. Detailed information concerning the site and extent of vascular involvement and development of collateral vessels were obtained with intraarterial DSA. Thickening of the thoracic aortic wall, however, could not be recognized with either intravenous or intraarterial DSA. Conventional angiography of the descending thoracic aorta is still required as an initial examination, particularly when there is no aortic arch involvement. However, there is no doubt that DSA has the potential to become the diagnostic procedure of choice in Takayasu arteritis.
Collapse
|
14
|
Abstract
An unusual systemic arteriovenous malformation arising from the left 9th intercostal artery, taking a caudal course through the left paravertebral veins, eventually drained into the left ascending lumbar vein, as illustrated at computed tomography and angiography. An embryologic maldevelopment of the azygos venous system is not the only possible explanation for venous drainage in the caudal direction. We believe that predominant venous drainage can take place in either direction because of the potentially bidirectional flow in the vertebral venous systems.
Collapse
|
15
|
Tanaka N, Kunihiro Y, Kobayashi T, Yujiri T, Kido S, Ueda K, Matsunaga N. High-resolution CT findings of idiopathic pneumonia syndrome after haematopoietic stem cell transplantation: based on the updated concept of idiopathic pneumonia syndrome by the American Thoracic Society in 2011. Clin Radiol 2016; 71:953-959. [PMID: 27421574 DOI: 10.1016/j.crad.2016.06.109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 06/07/2016] [Accepted: 06/10/2016] [Indexed: 10/21/2022]
Abstract
Idiopathic pneumonia syndrome (IPS) is an acute lung dysfunction of non-infectious aetiology and a severe complication following haematopoietic stem cell transplantation (HSCT). Recently, the American Thoracic Society (ATS) updated the concept of IPS and extended the concept to a wider range; it defined IPS as "an idiopathic syndrome of pneumopathy after HSCT, with evidence of widespread alveolar injury and in which infectious aetiologies and cardiac dysfunction, acute renal failure, or iatrogenic fluid overload have been excluded." The ATS also categorised the presumed site of primary tissue injury into three patterns (pulmonary parenchyma, vascular endothelium, and airway epithelium), each of which has several entities. Since the therapeutic strategies for IPS are clearly different from those of infectious diseases, and therapeutic delay causes a poor prognosis, radiologists should be aware of some characteristic HRCT findings of IPS, which includes a wide spectrum of entities. In this article, the characteristic HRCT findings of these entities, including acute interstitial pneumonia/acute respiratory distress syndrome, eosinophilic pneumonia, non-cardiogenic capillary leak syndrome, diffuse alveolar haemorrhage, transfusion-related acute lung injury, organising pneumonia, and bronchiolitis obliterans syndrome, are shown.
Collapse
Affiliation(s)
- N Tanaka
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan; Department of Radiology, Saiseikai Yamaguchi General Hospital, 2-11 Midoricho, Yamaguchi, Yamaguchi 753-8517, Japan.
| | - Y Kunihiro
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - T Kobayashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - T Yujiri
- Division of Endocrinology, Metabolism, Hematological Science and Therapeutics, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - S Kido
- Medical Engineering Science, Yamaguchi University Graduate School of Medicine, 2-16-1, Tokiwadai, Ube 755-8611, Japan
| | - K Ueda
- Department of Surgery and Clinical Science, Yamaguchi University Graduate, School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - N Matsunaga
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| |
Collapse
|
16
|
Kunihiro Y, Kobayashi T, Tanaka N, Matsumoto T, Okada M, Kamiya M, Ueda K, Kawano H, Matsunaga N. High-resolution CT findings of primary lung cancer with cavitation: a comparison between adenocarcinoma and squamous cell carcinoma. Clin Radiol 2016; 71:1126-31. [PMID: 27394062 DOI: 10.1016/j.crad.2016.06.110] [Citation(s) in RCA: 13] [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: 03/16/2016] [Revised: 05/21/2016] [Accepted: 06/09/2016] [Indexed: 12/17/2022]
Abstract
AIM To evaluate the high-resolution computed tomography (CT) findings of primary lung cancer with cavitation and compare the findings in adenocarcinoma and squamous cell carcinoma. MATERIALS AND METHODS The high-resolution CT findings of tumours with cavitation were retrospectively evaluated in 60 patients. Forty-seven of the lesions were diagnosed as adenocarcinomas; 13 were diagnosed as squamous cell carcinomas. The diameters of the tumour and cavity, the maximum thickness of the cavity wall, shape of the cavity wall, the number of cavities, and the presence of ground-glass opacity, bronchial obstruction, intratumoural bronchiectasis, emphysema, and honeycombing were evaluated. The mechanisms of cavity formation were examined according to the pathological features. RESULTS The maximum thickness of the cavity wall was significantly greater in squamous cell carcinomas than in adenocarcinomas (p=0.002). Ground-glass opacity and intratumoural bronchiectasis were significantly more common in adenocarcinomas than in squamous cell carcinomas (p<0.001 and p=0.040, respectively). Regarding the pathological findings, intratumoural bronchiectasis with or without alveolar wall destruction contributed to a significant difference between adenocarcinoma and squamous cell carcinoma (p<0.001; odds ratio [OR], 20.35; 95% confidence interval [CI], 3.87-107.10). CONCLUSION The cavity wall tends to be thicker in squamous cell carcinomas than in adenocarcinomas. The presence of ground-glass opacity and intratumoural bronchiectasis is strongly suggestive of adenocarcinoma.
Collapse
Affiliation(s)
- Y Kunihiro
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
| | - T Kobayashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - N Tanaka
- Department of Radiology, Saiseikai Yamaguchi General Hospital, 2-11, Midori-town, Yamaguchi-city, Yamaguchi 755-8517, Japan
| | - T Matsumoto
- Department of Radiology, National Hospital Organization, Yamaguchi Ube Medical Center, 685, Higashikiwa, Ube, Yamaguchi 755-0241, Japan
| | - M Okada
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - M Kamiya
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - K Ueda
- Department of Surgery and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - H Kawano
- Department of Molecular Pathology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - N Matsunaga
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| |
Collapse
|
17
|
Hashizume J, Higuchi N, Sato K, Kodama Y, Matsunaga N, Sakamoto T, Yamaguchi K, Nakamura T, Kitahara T, Sasaki H. Evaluation of Antiemetic Therapy for Hepatic Transcatheter Arterial Infusion Chemotherapy with Cisplatin. Biol Pharm Bull 2016; 39:611-4. [PMID: 27040634 DOI: 10.1248/bpb.b15-00603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Antiemetic prophylaxis with aprepitant, a 5-hydroxytryptamine3 (5-HT3) receptor antagonist and dexamethasone is recommended for patients receiving intravenous cisplatin chemotherapy. Whether the same antiemetic regime is superior for hepatic transcatheter arterial infusion chemotherapy with cisplatin (CDDP-TAI) is unknown. We conducted a retrospective study of antiemetic prophylaxis protection against chemotherapy-induced nausea and vomiting (CINV) in CDDP-TAI at Nagasaki University Hospital. The rate of complete response (CR) to antiemetics in the acute (<24 h) and delayed phases (24-120 h) was measured. Twenty-four patients were treated with a 5-HT3 receptor antagonist (granisetron or azasetron) and dexamethasone on the day of chemotherapy (day 1 only). There was a significant difference between the CR rates in the acute and delayed phases, 91.6, and 69.7%, respectively. Combination of a 5-HT3 antagonist and dexamethasone on day 1 is effective against acute CINV, but not delayed CINV during CDDP-TAI. These results may help guide the management of nausea and vomiting during CDDP-TAI to achieve better tolerance and compliance for fewer interventions and increased favorable therapeutic outcomes.
Collapse
Affiliation(s)
- Junya Hashizume
- Department of Hospital Pharmacy, Nagasaki University Hospital
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Kishi T, Shimizu K, Hashimoto S, Onoda H, Washida Y, Sakaida I, Matsunaga N. CT enteroclysis/enterography findings in drug-induced small-bowel damage. Br J Radiol 2014; 87:20140367. [PMID: 25348282 DOI: 10.1259/bjr.20140367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE To evaluate the CT enteroclysis (CTE)/enterography findings of patients with small-bowel mucosal damage induced by aspirin or non-steroidal anti-inflammatory drugs (NSAIDs) and to compare these findings with the duration of drug use and endoscopic findings. METHODS CTE findings of 11 patients (22 lesions) with drug-induced small-bowel damage were reviewed, including 8 NSAID users and 3 aspirin users. Three patients were short-term users (6 months or shorter) and eight were long-term users (3 years or longer). Nine patients also underwent videocapsule endoscopy (VCE) or double-balloon enteroscopy (DBE). RESULTS Small-bowel abnormalities were visible in 8 of 11 patients (73%) on CTE. Multiple lesions were seen in five patients, including all short-term users. Lesions were classified into three types. Type 1 (mucosal patchy enhancement) was found in four of eight patients (50%, 12 lesions) all were short-term users. Small erosions with mild oedema/redness were shown by DBE. Type 2 (homogeneous hyperenhancement) was found in two of eight patients (25%, four lesions) who were long-term users. Large ulcers with marked oedema/redness were shown by DBE. Type 3 (stratification enhancement) was found in four of eight patients (50%, six lesions), both short-term and long-term users. Annular or large ulcers with strictures were shown by VCE or DBE. CONCLUSION On CTE, Type 1 lesions in patients with mostly short-term aspirin or NSAID use, Type 2 lesions in patients with long-term use and Type 3 lesions in both types of patients were detected. CTE may have usefulness for the detection of mild damage. ADVANCES IN KNOWLEDGE Small-bowel abnormalities owing to aspirin or NSAID present with three different patterns on CTE.
Collapse
Affiliation(s)
- T Kishi
- 1 Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | | | | | | | | | | | | |
Collapse
|
19
|
Kinoshita K, Matsunaga N, Hiraoka M, Yanagimoto H, Minami H. Preparation of boron nitride and polystyrene/boron nitride composite particles by dehydrogenation in ionic liquids. RSC Adv 2014. [DOI: 10.1039/c3ra47722c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
20
|
Fujita T, Tanabe M, Takahashi S, Iida E, Matsunaga N. Percutaneous transhepatic hybrid biliary endoprostheses using both plastic and metallic stents for palliative treatment of malignant common bile duct obstruction. Eur J Cancer Care (Engl) 2013; 22:782-8. [PMID: 23834370 DOI: 10.1111/ecc.12088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2013] [Indexed: 01/29/2023]
Abstract
To evaluate clinical safety and efficacy of percutaneous transhepatic hybrid biliary prostheses for palliative treatment in patients with common bile duct obstruction caused by advanced malignancies. A total of 13 consecutive patients was treated with percutaneous transhepatic biliary endoprostheses concurrently using both plastic and metallic stents. Serum total bilirubin levels before and after stent placement were evaluated. The technical success rate, the period with no obstructive jaundice, patient survival and complications were also assessed. Median bilirubin levels decreased from 3.8 mg/dL before to 1.2 mg/dL after stent placement, and this difference was statistically significant. The median no-jaundice period after bile duct stent placement was 6.0 months (range: 2-11 months), and overall survival time was 7.0 months. Of the 13 patients, nine did not have recurrent jaundice by the time of death, whereas four (31%) had recurrent jaundice. A second intervention was performed in these four patients. A new plastic stent was placed and jaundice did not recur up to the time of death. No serious complications such as cholangitis, pancreatitis or bile duct perforation developed. Percutaneous transhepatic hybrid biliary endoprostheses using both plastic and metallic stents can be useful as non-invasive palliative treatment to relieve jaundice in patients with malignant obstructive jaundice.
Collapse
Affiliation(s)
- T Fujita
- Department of Radiology, UBE INDUSTRIES, LTD. Central Hospital, Ube, Yamaguchi, Japan
| | | | | | | | | |
Collapse
|
21
|
Tokuda O, Harada Y, Shiraishi G, Motomura T, Fukuda K, Kimura M, Matsunaga N. MRI of the anatomical structures of the knee: the proton density-weighted fast spin-echo sequence vs the proton density-weighted fast-recovery fast spin-echo sequence. Br J Radiol 2012; 85:e686-93. [PMID: 22215886 DOI: 10.1259/bjr/99570113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The purpose of this study was to compare the proton-density (PD)-weighted fast spin-echo (FSE) and fast-recovery FSE (FRFSE) sequences for the evaluation of the anatomical structures of the knee. METHOD 24 healthy volunteers who underwent MRI by both sagittal PD-weighted FSE and FRFSE sequences were evaluated. The signal-to-noise ratio, contrast-to-noise ratio (CNR) and anatomical detail visualisation were compared for the two techniques. RESULTS The mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FRFSE images than for the PD-weighted FSE images in the cartilages/the femorotibial joint effusion and the cruciate ligaments/the effusion around the cruciate ligaments; however, the mean CNRs and reader ratings for both readers were significantly higher for the PD-weighted FSE sequences than for the PD-weighted FRFSE sequences in the cartilages/the menisci and the cruciate ligaments. CONCLUSIONS The main advantages of the PD-weighted FRFSE sequence are the increase in contrast between fluid and non-fluid tissues and the time saved by using the procedure. However, in the absence of joint effusion, the PD-weighted FRFSE sequence generates a poorer contrast between the cartilage and meniscus, the cruciate ligaments and fat of the intercondylar fossa.
Collapse
Affiliation(s)
- O Tokuda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan.
| | | | | | | | | | | | | |
Collapse
|
22
|
Çolak M, Shimizu T, Matsunaga N, Murayama C, Nagashima S, Kataoka M, Kawashima C, Matsui M, Dorland HAV, Bruckmaier RM, Miyamoto A. Oestradiol Enhances Plasma Growth Hormone and Insulin-like Growth Factor-I Concentrations and Increased the Expression of their Receptors mRNAs in the Liver of Ovariectomized Cows. Reprod Domest Anim 2011; 46:854-61. [DOI: 10.1111/j.1439-0531.2011.01754.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Inoue A, Ishida T, Okura Y, Akiyama M, Ito K, Matsunaga N. [Effect of a comprehensive image processing on radiologists' performance in differential diagnosis of liver lesions using CT and MRI]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2010; 66:692-693. [PMID: 20702990 DOI: 10.6009/jjrt.66.692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE To evaluate whether a comprehensive image processing method as CAD using CT and MRI can improve the radiologists' diagnosis performance in the differentiation of focal liver lesions. METHOD AND MATERIALS A clinical image database used in this study consists of 14 cases of each lesion including hepatic cysts, hepatocellular carcinoma (HCC), metastatic liver cancer, and hemangioma. This technique by using MR images obtained with various imaging sequences and a series of dynamic MR and dynamic CT images is designed for the enhancement of liver lesions pixel by pixel. In this method, we make the pixel sizes of MR images the same size of CT image by using tri-linear interpolation technique. Then the 3D image registration technique based on mutual information is applied for the matching of images. The image intensity pattern with and without contrast enhancement is determined as the template for the differential detection of each lesion. Pixel-by-pixel cross-correlation coefficient is calculated for the enhancement of each lesion. The radiologists' performance in distinguishing between the liver lesion was evaluated by receiver operating characteristic analysis (ROC) with a continuous rating scale. RESULTS In free-response ROC analysis, true positive fractions were 75%, 87%, 85%, and 86% for hepatic cysts, HCC, metastatic liver cancer and hemangioma, respectively. Furthermore, average number of false positive and false negatives per image was 3.4 and 0.3, respectively. When radiologists made differential diagnosis of the liver lesions with the images of this technique, diagnostic accuracy was statistically significantly improved compared to the diagnostic accuracy without the images of this technique. The average area under the ROC curve (Az value) improved from 0.881 to 0.964 (p=0.069) for the differential diagnosis of hepatic cysts. Furthermore, the Az value of HCC, metastatic liver cancer, and hemangioma improved from 0.951 to 0.979 (p=0.040), from 0.946 to 0.976 (p=0.226), and from 0.966 to 0.987(p=0.045), respectively. CONCLUSION A comprehensive image processing method as CAD using CT and MRI can improve the radiologists' diagnostic performance in the differentiation of focal liver lesions. CLINICAL RELEVANCE/APPLICATION: This method improved the performance of differential detection of liver lesions from a large number of images and it would save radiologists' reading time, and thus could assist their diagnosis.
Collapse
|
24
|
Takashima K, Matsunaga N, Yoshimatsu M, Hazeki K, Kaisho T, Uekata M, Hazeki O, Akira S, Iizawa Y, Ii M. Analysis of binding site for the novel small-molecule TLR4 signal transduction inhibitor TAK-242 and its therapeutic effect on mouse sepsis model. Br J Pharmacol 2009; 157:1250-62. [PMID: 19563534 PMCID: PMC2743844 DOI: 10.1111/j.1476-5381.2009.00297.x] [Citation(s) in RCA: 172] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 02/17/2009] [Accepted: 03/10/2009] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE TAK-242, a novel synthetic small-molecule, suppresses production of multiple cytokines by inhibiting Toll-like receptor (TLR) 4 signalling. In this study, we investigated the target molecule of TAK-242 and examined its therapeutic effect in a mouse sepsis model. EXPERIMENTAL APPROACH Binding assay with [(3)H]-TAK-242 and nuclear factor-kappaB reporter assay were used to identify the target molecule and binding site of TAK-242. Bacillus calmette guerin (BCG)-primed mouse sepsis model using live Escherichia coli was used to estimate the efficacy of TAK-242 in sepsis. KEY RESULTS TAK-242 strongly bound to TLR4, but binding to TLR2, 3, 5, 9, TLR-related adaptor molecules and MD-2 was either not observed or marginal. Mutational analysis using TLR4 mutants indicated that TAK-242 inhibits TLR4 signalling by binding to Cys747 in the intracellular domain of TLR4. TAK-242 inhibited MyD88-independent pathway as well as MyD88-dependent pathway and its inhibitory effect was largely unaffected by lipopolysaccharide (LPS) concentration and types of TLR4 ligands. TAK-242 had no effect on the LPS-induced conformational change of TLR4-MD-2 and TLR4 homodimerization. In mouse sepsis model, although TAK-242 alone did not affect bacterial counts in blood, if co-administered with ceftazidime it inhibited the increases in serum cytokine levels and improved survival of mice. CONCLUSIONS AND IMPLICATIONS TAK-242 suppressed TLR4 signalling by binding directly to a specific amino acid Cys747 in the intracellular domain of TLR4. When co-administered with antibiotics, TAK-242 showed potent therapeutic effects in an E. coli-induced sepsis model using BCG-primed mice. Thus, TAK-242 may be a promising therapeutic agent for sepsis.
Collapse
Affiliation(s)
- K Takashima
- Pharmaceutical Research Division, Pharmacology Research Laboratories I, Takeda Pharmaceutical Company Limited, 2-17-85 Jusohonmachi, Yodogawa-ku, Osaka, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Sakamoto M, Suzuki N, Matsunaga N, Koshihara K, Seki M, Komiya H, Benno Y. Parabacteroides gordonii sp. nov., isolated from human blood cultures. Int J Syst Evol Microbiol 2009; 59:2843-7. [DOI: 10.1099/ijs.0.010611-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
26
|
Matsunaga N, Anan I, Rosenberg P, Nagai R, Lundström O, Horiuchi S, Ando Y, Suhr OB. Advanced glycation end product is implicated in amyloid‐related kidney complications. Scandinavian Journal of Clinical and Laboratory Investigation 2009; 65:263-71. [PMID: 16076681 DOI: 10.1080/00365510510013794] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Kidney failure is a common complication in familial amyloidotic polyneuropathy (FAP). It has been suggested that advanced glycation end products (AGEs) play an important role in the development and pathogenesis of FAP. MATERIAL AND METHODS To evaluate the impact of AGEs on FAP patients' kidney dysfunction, we measured AGE in serum and urine of 28 FAP patients and 18 healthy controls by AGE-specific enzyme-linked immunosorbent assay (ELISA). Immunohistochemistry utilizing antibodies to AGE and the receptor for AGE (RAGE) were used on kidney tissue from 3 FAP patients and 3 diabetic patients to disclose a correlation between amyloid deposits and AGE-RAGE. RESULTS The glomeruli of FAP patients were heavily deposited with amyloid and the glomerular size was enlarged. The space between Bowman's capsule and glomerulus was totally covered by the enlarged glomerulus. AGE and RAGE were deposited in glomeruli and tubuli and correlated with amyloid deposits. Decreased AGE levels in the liver-transplanted FAP patients' serum compared with that of non-transplanted patients were noted, and AGE concentration in serum tended to be higher in non-transplanted FAP patients compared with normal control subjects. There were no differences in the AGE urine levels in FAP patients compared with controls. No correlation could be found between AGE in urine and serum compared with serum albumin, serum creatinine and creatinine clearance. CONCLUSIONS The accumulation of AGE, RAGE and amyloid in the kidney of FAP patients suggests that these molecules play an important role in the origin and pathogenesis of renal failure in FAP patients.
Collapse
Affiliation(s)
- N Matsunaga
- Department of Medicine, Gastroenterology and Hepatology Section, University Hospital of Umeå, Sweden
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Suga K, Yasuhiko K, Iwanaga H, Tokuda O, Matsunaga N. Functional mechanism of lung mosaic CT attenuation: assessment with deep-inspiration breath-hold perfusion SPECT-CT fusion imaging and non-breath-hold Technegas SPECT. Acta Radiol 2009; 50:34-41. [PMID: 19052938 DOI: 10.1080/02841850802575628] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND The functional mechanism of lung mosaic computed tomography attenuation (MCA) in pulmonary vascular disease (PVD) and obstructive airway disease (OAD) has not yet been fully clarified. PURPOSE To clarify the mechanism of MCA in these diseases by assessing the relationship between regional lung function and CT attenuation change at MCA sites with the use of automated deep-inspiratory breath-hold (DIBrH) perfusion single-photon emission computed tomography (SPECT)-CT fusion images and non-breath-hold Technegas SPECT. MATERIAL AND METHODS Subjects were 42 PVD patients (31 pulmonary thromboembolism, four primary/two secondary pulmonary hypertension, and five Takayasu arteritis), 12 OAD patients (five acute asthma, four obliterative bronchiolitis, and three bronchiectasis), and 12 normal controls, all of whom had MCA on DIBrH CT. The relationship between regional lung function and CT attenuation change at the lung slices with MCA was assessed using DIBrH perfusion SPECT-CT fusion images and non-breath-hold Technegas SPECT. The severity of perfusion defects with or without MCA was quantified by regions-of-interest analysis. RESULTS On DIBrH CT and perfusion SPECT, in contrast to no noticeable CT attenuation abnormality and fairly uniform perfusion in controls, 60 MCA and 274 perfusion defects in PVD patients, and 18 MCA and 61 defects in OAD patients were identified, with a total of 77 ventilation defects on Technegas SPECT in all patients. SPECT-CT correlation showed that, throughout the 78 MCA sites of all patients, lung perfusion was persistently decreased at low CT attenuation and preserved at intervening high CT attenuation, while lung ventilation was poorly correlated with CT attenuation change. The radioactivity ratios of reduced perfusion and the intervening preserved perfusion at the 78 perfusion defects with MCA were significantly lower than those at the remaining 257 defects without MCA (P<0.0001). CONCLUSION Although further validation is required, our results indicate that heterogeneous pulmonary arterial perfusion may be a dominant mechanism of MCA in PVD and OAD.
Collapse
Affiliation(s)
- K. Suga
- Department of Radiology, St. Hill Hospital, Ube, Yamaguchi, Japan
| | - K. Yasuhiko
- Department of Radiology, St. Hill Hospital, Ube, Yamaguchi, Japan
| | - H. Iwanaga
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - O. Tokuda
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| | - N. Matsunaga
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan
| |
Collapse
|
28
|
Nozaki Y, Matsunaga N, Ishizawa T, Ueda T, Takeuchi N. HMRF1L is a human mitochondrial translation release factor involved in the decoding of the termination codons UAA and UAG. Genes Cells 2008; 13:429-38. [PMID: 18429816 DOI: 10.1111/j.1365-2443.2008.01181.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
While all essential mammalian mitochondrial factors involved in the initiation and elongation phases of translation have been cloned and well characterized, little is known about the factors involved in the termination process. In the present work, we report the functional analysis of human mitochondrial translation release factors (RF). Here, we show that HMRF1, which had been previously denoted as a human mitochondrial RF, was inactive in in vitro translation system, although it is a mitochondrial protein. Instead, we identified another human mitochondrial RF candidate, HMRF1L, and demonstrated that HMRF1L is indeed a mitochondrial protein that functions specifically as an RF for the decoding of mitochondrial UAA and UAG termination codons in vitro. The identification of the functional mitochondrial RF brings us much closer to a detailed understanding of the translational termination process in mammalian mitochondria as well as to the unraveling of the molecular mechanism of diseases caused by the dys-regulation of translational termination in human mitochondria.
Collapse
Affiliation(s)
- Yusuke Nozaki
- Department of Medical Genome Sciences, Graduate School of Frontier Sciences, University of Tokyo, Building FSB-401, 5-1-5, Kashiwanoha, Kashiwa, Chiba Prefecture 277-8562, Japan
| | | | | | | | | |
Collapse
|
29
|
Bytautas L, Matsunaga N, Nagata T, Gordon MS, Ruedenberg K. Accurate ab initio potential energy curve of F2. III. The vibration rotation spectrum. J Chem Phys 2008; 127:204313. [PMID: 18052433 DOI: 10.1063/1.2805392] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An analytical expression is found for the accurate ab initio potential energy curve of the fluorine molecule that has been determined in the preceding two papers. With it, the vibrational and rotational energy levels of F(2) are calculated using the discrete variable representation. The comparison of this theoretical spectrum with the experimental spectrum, which had been measured earlier using high-resolution electronic spectroscopy, yields a mean absolute deviation of about 5 cm(-1) over the 22 levels. The dissociation energy with respect to the lowest vibrational energy is calculated within 30 cm(-1) of the experimental value of 12 953+/-8 cm(-1). The reported agreement of the theoretical spectrum and dissociation energy with experiment is contingent upon the inclusion of the effects of core-generated electron correlation, spin-orbit coupling, and scalar relativity. The Dunham analysis [Phys. Rev. 41, 721 (1932)] of the spectrum is found to be very accurate. New values are given for the spectroscopic constants.
Collapse
Affiliation(s)
- L Bytautas
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
| | | | | | | | | |
Collapse
|
30
|
Bytautas L, Matsunaga N, Nagata T, Gordon MS, Ruedenberg K. Accurate ab initio potential energy curve of F2. II. Core-valence correlations, relativistic contributions, and long-range interactions. J Chem Phys 2008; 127:204301. [PMID: 18052421 DOI: 10.1063/1.2801989] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The nonrelativistic, valence-shell-only-correlated ab initio potential energy curve of the F(2) molecule, which was reported in the preceding paper, is complemented by determining the energy contributions that arise from the electron correlations that involve the core electrons as well as the contributions that are due to spin-orbit coupling and scalar relativistic effects. The dissociation curve rises rather steeply toward the energy of the dissociated atoms because, at larger distances, the atomic quadrupole-quadrupole repulsion and spin-orbit coupling counteract the attractive contributions from incipient covalent binding and correlation forces including dispersion.
Collapse
Affiliation(s)
- L Bytautas
- Department of Chemistry and Ames Laboratory/US Department of Energy, Iowa State University, Ames, IA 50011, USA
| | | | | | | | | |
Collapse
|
31
|
Oyagi A, Oida Y, Hara H, Izuta H, Shimazawa M, Matsunaga N, Adachi T, Hara H. Protective effects of SUN N8075, a novel agent with antioxidant properties, in in vitro and in vivo models of Parkinson's disease. Brain Res 2008; 1214:169-76. [PMID: 18457816 DOI: 10.1016/j.brainres.2008.02.073] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Revised: 02/20/2008] [Accepted: 02/24/2008] [Indexed: 10/22/2022]
Abstract
SUN N8075 is a novel antioxidant with neuroprotective properties. This study was designed to elucidate its neuroprotective effects against 6-hydroxy dopamine (6-OHDA)-induced cell death and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurotoxicity (known as in vitro and in vivo models of Parkinson's disease, respectively). In the in vitro study, on human neuroblastoma SH-SY5Y cells, SUN N8075 decreased the hydrogen peroxide (H2O2)-induced production of reactive oxygen species and protected against 6-OHDA-induced cell death. In the in vivo study, SUN N8075, when injected intraperitoneally (i.p.) twice with a 5-h interval, inhibited lipid peroxidation (viz. the production of thiobarbituric acid reactive substance) in the mouse forebrain at 1 h after the second injection. Mice were injected i.p. with MPTP (10 mg/kg) four times at 1-h intervals, and brains were analyzed 7 days later. SUN N8075 at 30 mg/kg (i.p., twice) exhibited a protective effect against the MPTP-induced decrease in tyrosine hydroxylase (TH)-positive fibers in the striatum. Moreover, SUN N8075 at 10 and 30 mg/kg (i.p., twice) had a similar protective effect against the MPTP-induced decrease in TH-positive cells in the substantia nigra. Further, SUN N8075 30 mg/kg (i.p. twice) markedly suppressed the MPTP-induced accumulation of 8-hydroxy-deoxyguanosine (8-OHdG) in the striatum. These findings indicate that SUN N8075 exerts protective effects, at least in part via an anti-oxidation mechanism, in these in vitro and in vivo models of Parkinson's disease.
Collapse
Affiliation(s)
- A Oyagi
- Department of Biofunctional Evaluation, Molecular Pharmacology, Gifu Pharmaceutical University, 5-6-1 Mitahora-higashi, Gifu 502-8585, Japan
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Kadokawa H, Matsui M, Hayashi K, Matsunaga N, Kawashima C, Shimizu T, Kida K, Miyamoto A. Peripheral administration of kisspeptin-10 increases plasma concentrations of GH as well as LH in prepubertal Holstein heifers. J Endocrinol 2008; 196:331-4. [PMID: 18252956 DOI: 10.1677/joe-07-0504] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study was conducted to estimate the effects of kisspeptin-10 on blood concentrations of LH and GH in prepubertal dairy heifers. Heifers received a single injection of 1 mg kisspeptin-10 (n=5) or saline (n=5) intravenously, and serial blood samples were collected at 15-min intervals to analyze the response curves of both LH and GH after injection. Peak-shaped responses were observed for concentrations of LH and GH, and the peaks were observed at 27+/-3 and 75+/-9 min, respectively, after injection, only in heifers injected with kisspeptin-10. These data suggest various possible important links among kisspeptin, the reproductive axis, and also the somatotropic axis in prepubertal Holstein heifers.
Collapse
Affiliation(s)
- H Kadokawa
- Department of Veterinary Medicine, Faculty of Agricultural Science, Yamaguchi University, Yoshida 1677-1, Yamaguchi 753-8515, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Suga K, Karino Y, Fujita T, Okada M, Kawakami Y, Ueda K, Yuan Y, Matsunaga N. Cutaneous drainage lymphatic map with interstitial multidetector-row computed tomographic lymphography using iopamidol: preliminary results. Lymphology 2007; 40:63-73. [PMID: 17853616] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We performed preliminary tests of the feasibility of multi-detector computed tomographic lymphography (MDCT-LG) with interstitial injection of iopamidol for mapping cutaneous lymphatic drainage pathways. MDCT-LG images were obtained following cutaneous injection of a total of 1ml iopamidol bilaterally into hind legs of 10 dogs. The locations of the first draining lymph nodes were marked on the skin under MDCT-LG guidance. Five dogs served for postmortem examination of lymphatic anatomy, and the remaining 5 underwent MDCT-LG after ligation of the afferent lymphatic vessels of the first draining popliteal nodes. Clinically, MDCT-LG was attempted in 6 patients with cutaneous malignant melanoma and compared with Tc-99m-human serum albumin lymphoscintigraphy. MDCT-LG clearly visualized the first draining lymph nodes and their afferent lymphatic vessels draining from the contrast injection sites with detailed underlying anatomy in all dogs. At surgery, all these first draining nodes could be found at predicted locations under MDCT-LG guidance. MDCT-LG showed rerouting of lymphatic vessels after ligation of the afferent lymph vessels of the popliteal nodes in the second 5 dogs. Clinically, MDCT-LG also allowed accurate mapping and biopsy of the first draining nodes from primary tumors at predicted locations, with minimal skin incision. Lymphoscintigraphy failed to identify these nodes due to overlapping radioactivity of clustered nodes or transport of the radiotracer to subsequent distant nodes in 4 patients. Although a more extensive study is warranted for further validation, preoperative interstitial MDCT-LG appears to have the potential feasibility for accurate sentinel lymph node mapping and biopsy in patients with cutaneous melanoma.
Collapse
Affiliation(s)
- K Suga
- Department of Radiology, Yamaguchi University School of Medicine, Yamaguchi, Ube, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Kawashima C, Amaya Montoya C, Masuda Y, Kaneko E, Matsui M, Shimizu T, Matsunaga N, Kida K, Miyake YI, Suzuki M, Miyamoto A. Short Communication: A Positive Relationship Between the First Ovulation Postpartum and the Increasing Ratio of Milk Yield in the First Part of Lactation in Dairy Cows. J Dairy Sci 2007; 90:2279-82. [PMID: 17430928 DOI: 10.3168/jds.2006-414] [Citation(s) in RCA: 7] [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] [Indexed: 11/19/2022]
Abstract
The aim of the present study was to examine the relationship between characteristics of the lactation curve, on the basis of daily milk yield, and ovulation within 3 wk postpartum as an indicator of early return to luteal activity in dairy cows. Lactation records from 46 lactating Holstein cows between calving and 305 d postpartum were studied. Milk samples were collected twice weekly between d 7 and 100 for later determination of progesterone concentrations. Occurrence of an early first ovulation was determined by an increase in milk progesterone by 3 wk after calving. Milk yield was recorded daily until 305 d postpartum, and average yield was calculated weekly. The lactation curve was characterized by 8 indices on the basis of the weekly average of milk yield as follows: a) first-week milk yield; b) peak milk yield; c) actual 305-d milk yield; d) peak week; e) difference in milk yield between the first week and peak week; f) difference in milk yield between the peak week and last week (43rd week postpartum); g) ratio of increase in milk yield between wk 1 and the week of peak yield; and h) ratio of decline in milk yield between the week of peak yield and the last week. Indices g and h were calculated as linear. The number of cows having ovulated by 3 wk postpartum was 22 (47.8%). The resumption of ovarian cycles with normal luteal phases occurred earlier in ovular cows than in anovular cows (32.0 d vs. 57.1 d). Although total milk yield did not differ between ovular and anovular cows, the ratio of increase in milk yield from the first week to the peak week (index g) in ovular cows was smaller compared with that of anovular cows (1.71 vs. 2.54). In addition, the ratio of increase in milk yield from the first week to the third week postpartum was greater in anovular cows by 3 wk postpartum (ovular = 1.43 +/- 0.23 vs. anovular = 2.32 +/- 0.29). In conclusion, the present study demonstrates that a greater increasing ratio of milk yield during early lactation may delay resumption of ovarian cycles after parturition. Therefore, this study is the first to demonstrate statistically that a smaller increasing ratio of milk yield (index g) during early lactation may have a beneficial effect on the first ovulation by 3 wk postpartum.
Collapse
Affiliation(s)
- C Kawashima
- Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Kawashima C, Sudo N, Amaya Montoya C, Kaneko E, Matsui M, Matsunaga N, Tetsuka M, Shimizu T, Kida K, Miyake YI, Miyamoto A. 252 THE ROLE OF INSULIN-LIKE GROWTH FACTOR 1 (IGF-1) IN DEVELOPMENT OF AN ESTROGEN-ACTIVE DOMINANT FOLLICLE DURING THE FIRST FOLLICULAR WAVE POSTPARTUM IN DAIRY COWS. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Recent studies have shown that IGF-1 is a crucial factor for ovarian follicular development in mammals. In postpartum (pp) dairy cows, plasma IGF-1 and estradiol (E2) levels in ovulatory cows at the first follicular wave pp are higher than in anovulatory cows. However, the plasma IGF-1 profile in an ovulatory or anovulatory dominant follicle (DF), which have different E2 production, at the first follicular wave pp have not yet been elucidated. Thus, we investigated the changing profile of plasma IGF-1 levels during first follicular wave pp. In 22 multiparous Holstein cows, blood samples were obtained 2 times/week from 4 weeks prepartum to 3 weeks pp, and the first follicular wave was monitored by ultrasound 2 times/week from 7 days pp to ovulatory phase. Detailed IGF-1 profiles in blood were determined during DF growth and maturation 4 times/day from 10 days pp to 7 days after the first ovulation in 5 ovulatory cows and to 20 days pp in 4 anovulatory cows; the data were analyzed by repeated measures ANOVA, and Student's t-test. There was no interaction between groups and time within the prepartum or the pp period. The ovulatory cows (n = 13/22) with an estrogen-active dominant (EAD: high plasma E2 level with peak) follicle showed higher IGF-1 levels than anovulatory cows (n = 9/22) with an estrogen-inactive dominant (EID: low plasma E2 level without peak) follicle during the prepartum (117 � 8 vs. 91 � 5 ng mL-1; P < 0.05) and the pp (91 � 4 vs. 64 � 4 ng mL-1; P < 0.001) period. Especially noteworthy, during the first follicular wave pp in ovulatory cows, the plasma IGF-1 levels were maintained at a high level until E2 levels increased, followed by an LH surge. We observed that the EAD follicle in ovulatory cows ovulated. To further examine the IGF-1 system in the intra-follicular environment, we used the EAD and EID follicles from ovaries of dairy cows obtained at a slaughterhouse. The EAD and EID follicles were classified on the basis of follicle diameter and E2 concentrations in follicular fluid (FF). The significant differences of factors between EAD and EID were analyzed by Student's t-test. The expression of IGF-1 mRNA was not detected in follicular cells in either EAD and EID, suggesting that IGF-1 in FF is mainly derived from liver. The free IGF-1 levels in FF in EAD (4.8 � 0.5 ng mL-1) were higher than those in EID (2.7 � 0.1 ng mL-1; P < 0.05). In addition, the expression of type 1 IGF receptor (IGFR-1) mRNA in EAD was higher than hat in EID (P < 0.0001). From the results of the present study, it is apparent that the EAD follicle during the first follicular wave pp in ovulatory cows sufficiently expressed IGFR-1, and a liver-derived IGF-1 stimulates E2 production in the follicle to ovulate. In conclusion, our data suggest that a high concentration of IGF-1, secreted from the liver, during the peripartum period may be one of important factors for the appearance of an ovulatory follicle during the first follicular wave pp cows.
Collapse
|
36
|
|
37
|
Hiyama A, Ebe K, Kanzaki R, Tsukamoto K, Tsukuda T, Taguchi K, Mukae H, Tanaka N, Awaya H, Miura G, Matsumoto T, Matsunaga N. 3D Set-up Accuracy for Moving Pulmonary Tumors on a CT-on-Rails System Evaluated with Fluoroscopic Real-Time Tumor-Tracking System. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.843] [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: 10/25/2022]
|
38
|
Matsunaga N, Ozeki H, Hirabayashi Y, Shimada S, Ogura Y. HISTOPATHOLOGIC EVALUATION OF THE INTERNAL LIMITING MEMBRANE SURGICALLY EXCISED FROM EYES WITH DIABETIC MACULOPATHY. Retina 2005; 25:311-6. [PMID: 15805908 DOI: 10.1097/00006982-200504000-00010] [Citation(s) in RCA: 56] [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: 02/07/2023]
Abstract
PURPOSE To histopathologically evaluate the internal limiting membrane (ILM) in diabetic eyes with macular edema as compared to nondiabetic controls. METHODS The authors ultrastructurally and immunohistochemically studied ILM specimens that were intentionally peeled from five eyes with diabetic maculopathy, comprising four with diffuse diabetic macular edema and one with macular hole accompanying diabetic retinopathy (DM group), and five with nondiabetic idiopathic macular hole (MH group). They compared ultrastructural and immunohistochemical findings between the two groups. RESULTS A larger amount of cellular elements was observed on the vitreous side of the ILM in the DM group. The thickness of the ILM in the DM group was significantly increased (mean 4.8 +/- 1.6 microm) compared with that in the MH group (1.8 +/- 0.6 microm) (P < 0.0001). Immunoreactions for heparan sulfate proteoglycan in the ILM were more abundant in the DM group than in the MH group. CONCLUSION The ILM thickening and cell abundance on the vitreous surface might contribute to the course and the pathogenesis of diabetic maculopathy.
Collapse
Affiliation(s)
- Noriko Matsunaga
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, Japan.
| | | | | | | | | |
Collapse
|
39
|
Matsunaga N, Hayashi M, Yamamoto K, Nishijima T, Kizu J, Nishihara K, Takanaka A, Morikawa A, Nakashima E. Simultaneous assessment of the in vivo amount of CYP1A2 and CYP3A2 by the PKCYP-test using theophylline in rats. Drug Metab Pharmacokinet 2004; 17:190-8. [PMID: 15618669 DOI: 10.2133/dmpk.17.190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recently, we developed a method for assessing in vivo drug metabolism capacity by pharmacokinetic estimation of the quantity of cytochrome P450 (CYP) in vivo (PKCYP-test), in which an apparent liver-to-blood free concentration gradient in vivo (qg) is introduced. The qg value can be alternatively defined as the ratio of the in vivo-in vitro clearance by a single CYP isoform. In this study, we examined the application of the PKCYP-test to drugs metabolized by multiple CYP isoforms in a rat model with fluctuating CYP1A2 levels using theophylline as a model drug. In control rats, the estimated qg values for each CYP1A2 and CYP3A2 based on the in vivo hepatic intrinsic clearance, in vitro Michaelis constant (K(m)) and maximal rate of metabolism (V(max)) values for liver slices agreed well. Moreover, the qg value for CYP1A2 determined by the K(m) and V(max) values for recombinant CYP1A2 was compatible with that based on liver slices. These qg values also agreed with that of rats pretreated with 3-methylcholanthrene. The time-course of theophylline concentrations in serum simulated by a physiologically-based pharmacokinetic model incorporating the hepatic clearance determined by the PKCYP-test agreed with the observed values. These results demonstrate that the qg value in the PKCYP-test is applicable to drugs metabolized by multiple CYP isoforms.
Collapse
Affiliation(s)
- Noriko Matsunaga
- Department of Pharmaceutics, Kyoritsu College of Pharmacy, Tokyo, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Ebe K, Shirato H, Hiyama A, Kanzaki R, Tsukamoto K, Ariga M, Karino Y, Mukae H, Matsumoto T, Matsunaga N. Integration of fluoroscopic real-time tumor-tracking system and tomographic scanner on the rail in the treatment room. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.608] [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: 10/26/2022]
|
41
|
Affiliation(s)
- Mayu Kojima
- Department of Ophthalmology, Kyoritu Juzen Hospital, Shizuoka, Japan.
| | | | | | | | | |
Collapse
|
42
|
Vega RA, Hidari H, Matsunaga N, Kuwayama H, Manalo DD, Lee HG, Hata H. Plasma Leptin and Performance of Purebred and Backcrossed Hereford throughout Grazing and Feedlot Fattening. Asian Australas J Anim Sci 2004. [DOI: 10.5713/ajas.2004.954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
43
|
Kokaze A, Ishikawa M, Matsunaga N, Yoshida M, Sekine Y, Sekiguchi K, Harada M, Satoh M, Teruya K, Takeda N, Fukazawa S, Uchida Y, Takashima Y. Longevity-associated mitochondrial DNA 5178 A/C polymorphism and blood pressure in the Japanese population. J Hum Hypertens 2003; 18:41-5. [PMID: 14688809 DOI: 10.1038/sj.jhh.1001632] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
It has been reported that the mitochondrial DNA 5178 adenine/cytosine (mt5178 A/C) polymorphism, also called NADH dehydrogenase subunit 2-237 methionine/leucine (ND2-237 Met/Leu) polymorphism, may be associated with longevity in Japanese individuals, and that the mt5178A genotype may have an antiatherogenic influence. To determine whether mt5178 A/C polymorphism influences blood pressure, we genotyped 412 healthy Japanese individuals and performed a cross-sectional study investigating the relationship between genotype and blood pressure. In women with mt5178A, the mean diastolic blood pressure was higher than in those with mt5178C by 3.2 mmHg (P=0.040). In men, no statistically significant difference in systolic or diastolic blood pressure was observed between mt5178 A/C genotypes. However, a significant correlation between mt5178 A/C genotypes and the effects of habitual drinking on blood pressure was found. After adjustment for several factors, in men carrying mt5178C, both systolic and diastolic blood pressure were significantly higher in daily drinkers than in occasional (P=0.002 and 0.002, respectively) as well as nondrinkers (P<0.001 and 0.001, respectively), whereas in men carrying mt5178A, no significant differences in blood pressure were detected, irrespective of alcohol consumption. These results suggest that mt5178 A/C (=ND2-237 Met/Leu) polymorphism may influence both diastolic blood pressure in Japanese women and the blood-pressure-increasing effect of drinking in Japanese men.
Collapse
Affiliation(s)
- A Kokaze
- Department of Public Health, Kyorin University School of Medicine, Shinkawa Mitaka-shi, Tokyo, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Nou V, Inoue H, Lee H, Matsunaga N, Kuwayama H, Hidari H. Effect of Twice Daily Administration of GH-releasing Peptide-2 for 10 Days on Growth Performance, Plasma GH Responses and Insulin-like Growth Factor-1 Concentrations in Swine. Asian Australas J Anim Sci 2003. [DOI: 10.5713/ajas.2003.1193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
45
|
Suga K, Yuan Y, Ogasawara N, Okada M, Matsunaga N. Localization of Breast Sentinel Lymph Nodes by Mr Lymphography With a Conventional Gadolinium Contrast Agent. Preliminary Observations in Dogs and Humans. Acta Radiol 2003. [DOI: 10.1034/j.1600-0455.2003.00014.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
46
|
Suga K, Yuan Y, Ogasawara N, Okada M, Matsunaga N. Localization of breast sentinel lymph nodes by MR lymphography with a conventional gadolinium contrast agent. Preliminary observations in dogs and humans. Acta Radiol 2003; 44:35-42. [PMID: 12630996] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
PURPOSE To test the capability of an indirect MR lymphography (MRLG) using a conventional extracellular gadolinium (Gd)-based contrast agent for localizing breast sentinel lymph node (SLN). METHODS A total of 1 and 0.5 ml of undiluted gadopentetate dimeglumine were injected subcutaneously into the two periareolar areas overlying each caudal mammary gland in 10 female dogs. Contiguous 2-mm-thick fast gradient echo MR images were acquired through the upper breast and axilla before and for 60 min after gentle massage at the injection sites, yielding 3D displays. The localized SLN was resected from the living animals, followed by post mortem examinations. MRLG (1 ml contrast agent injected) was also attempted in 5 female volunteers. RESULTS Even with 0.5-ml contrast agent, the MRLG clearly visualized the connection of SLN and lymphatic vessels directly draining from the injection sites, and the remaining distant nodes, with the maximal enhancement peaks within 10 min after massage. The 3D images provided comprehensive anatomy of these lymphatic pathways in each axilla. Of the 20 SLN and 128 distant nodes visualized on the MRLG, all the SLN (100%) and 107 (83.5%) distant nodes could be resected pre- and post mortem, in good correlation with the locations and sizes on the MR images. MRLG also effectively localized SLN in the volunteers, without significant adverse effects. CONCLUSION An indirect MRLG using small volumes of conventional Gd-based contrast agent may have potential for accurate identification and surgical biopsy of breast SLN.
Collapse
Affiliation(s)
- K Suga
- Department of Radiology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan.
| | | | | | | | | |
Collapse
|
47
|
Nou V, Tomoshi K, Inoue H, Matsunaga N, Kuwayama H, Hidari H. Effect of Exogenous Porcine GH Administration on GH Responses to GH-releasing Peptide-2 and GH-releasing Hormone in Swine. Asian Australas J Anim Sci 2003. [DOI: 10.5713/ajas.2003.1188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
48
|
Abstract
BACKGROUND Paraovarian cysts are common intrapelvic neoplasms, but the magnetic resonance (MR) findings of paraovarian cyst have never been reported. We investigated the spectrum of MR imaging features of paraovarian cyst. METHODS MR images of 18 paraovarian cysts in 16 patients were reviewed retrospectively. MR images were evaluated for the size and location of paraovarian cysts, single or multicystic, signal intensity on T1- and T2-weighted images, and visualization of the normal ovary on the affected side. RESULTS The normal ovary of the affected side was recognized in 13 lesions. Four of these 13 cysts were separated from the ipsilateral ovary. In seven cysts, the normal ovary was abutted by cysts but maintained its shape. In two cysts, the beak sign was recognized at the interface between the cyst and the ovary. Most other MR features were nonspecific. CONCLUSION Most paraovarian cysts were homogeneous cystic masses near the ipsilateral round ligament and the uterus. Demonstration of a normal ipsilateral ovary close to, but separated from, the adnexal cyst may be an important MR finding for the diagnosis of paraovarian cysts.
Collapse
Affiliation(s)
- K Kishimoto
- Department of Radiology, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | | | | | | | | | | |
Collapse
|
49
|
Kitano T, Iizasa H, Terasaki T, Asashima T, Matsunaga N, Utoguchi N, Watanabe Y, Obinata M, Ueda M, Nakashima E. Polarized glucose transporters and mRNA expression properties in newly developed rat syncytiotrophoblast cell lines, TR-TBTs. J Cell Physiol 2002; 193:208-18. [PMID: 12384998 DOI: 10.1002/jcp.10165] [Citation(s) in RCA: 36] [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] [Indexed: 01/27/2023]
Abstract
In this study, we have established new syncytiotrophoblast cell lines (TR-TBTs) from the recently developed transgenic rat harboring temperature-sensitive simian virus 40 large T-antigen gene (Tg-rat). Four conditionally immortalized syncytiotrophoblast cell lines (TR-TBT 18d-1 approximately 4) were obtained from pregnant Tg-rats at gestational day 18. These cell lines had a syncytium-like morphology, could be prepared as monolayers, expressed cytokeratins and rat syncytiotrophoblast markers, and exhibited apical or basal GLUT1 localizations and apical GLUT3 localizations. TR-TBTs express large T-antigen and grow well at 33 degrees C with a doubling time of about 30 h. TR-TBTs have processes for the uptake of dehydroepiandrosteron-3-sulfate (DHEAS) and these are predominantly located on the basal side, and this is the first report of an in vitro model of blood placental barrier (BPB) able to incorporate DHEAS. Therefore, TR-TBTs are an appropriate in vitro model for investigating carrier-mediated transport functions at the BPB. Moreover, TR-TBTs express betaine/GABA transporter (GAT-2/BGT-1), concentrative nucleoside transporter 2 (CNT2), equilibrative nucleoside transporter 1 (ENT1), and ENT2 and the expression of these transporters has been reported in blood-brain barrier (BBB). Thus, the expression patterns of nucleoside and neurotransmitter transporters examined are quite similar in both the BPB and BBB.
Collapse
Affiliation(s)
- Tomohide Kitano
- Department of Pharmaceutics, Kyoritsu College of Pharmacy, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Iizasa H, Bae SH, Asashima T, Kitano T, Matsunaga N, Terasaki T, Kang YS, Nakashima E. Augmented expression of the tight junction protein occludin in brain endothelial cell line TR-BBB by rat angiopoietin-1 expressed in baculovirus-infected Sf plus insect cells. Pharm Res 2002; 19:1757-60. [PMID: 12458684 DOI: 10.1023/a:1020921818105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Himashi Iizasa
- Department of Pharmaceutics, Kyoritsu College of Pharmacy, 1-5-30 Shiba-koen, Minato-ku, Tokyo 105-8512, Japan
| | | | | | | | | | | | | | | |
Collapse
|