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Kanazawa H, Shimoda T, Kou N, Okamura Y, Ito H. Optic nerve sheath diameter measurement using ultrasonography: associations with in-hospital mortality in COVID-19 intensive care unit admissions. QJM 2023; 116:617-618. [PMID: 37079750 DOI: 10.1093/qjmed/hcad070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Indexed: 04/22/2023] Open
Affiliation(s)
- H Kanazawa
- The University of Texas Health Science Center at Tyler, Tyler, TX, USA
| | - T Shimoda
- University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - N Kou
- Chiba University Hospital, Chiba, Chiba, Japan
| | - Y Okamura
- College of Medicine, School of Medicine and Health Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - H Ito
- Division of General Internal Medicine, Department of Internal Medicine, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
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Kuyama N, Kaikita K, Mitsuse T, Fujisue K, Nakanishi N, Tabata N, Yamanaga K, Sueta D, Kanazawa H, Takashio S, Araki S, Arima Y, Yamamoto E, Matsushita K, Tsujita K. Total thrombus-formation analysis system (T-TAS) can predict target lesion revascularization in patients undergoing endovascular therapy for critical limb ischemia. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2033] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Despite of the development of endovascular therapy (EVT), the frequency of target lesion revascularization (TLR) after EVT in patients with critical limb ischemia (CLI) is still high. Recent histrogical study suggested the possibility of thromboembolic phenomenon in the development of CLI; however, there is few monitoring system of total thrombogenicity in perioperative period of EVT in CLI patients. The total thrombus-formation analysis system (T-TAS), a novel system for quantitatively analyzing thrombus formation using microchips with thrombogenic surfaces (collagen plus tissue factor, atheroma [AR]-chip), is validated and can evaluate the total thrombogenicity.
Purpose
To investigate the utility of T-TAS parameters in predicting TLR after EVT in CLI patients.
Methods
We analyzed 27 CLI patients (45 lesions; aortoiliac 20%, femoropopliteal 40%, infrapopliteal 40%) who underwent EVT at our institution between January 2018 and December 2020. Patients undergoing hemodialysis were excluded. Blood sample was collected on the day of EVT and was used in T-TAS to compute the thrombus formation area under the curve (AUC; AUC for the first 30 minutes for AR tested at flow rate of 10 lL/min [AR10-AUC30]). We investigated the relationship between the AR10-AUC30 level and the occurrence of clinically-driven TLR, and the predictors of TLR among CLI patients.
Results
Study population had a mean age of 77 years, and 56% were male. During the follow-up period (mean 1.0±0.7 years), 11 lesions (24%) required clinically-driven TLR. The AR10-AUC30 level was significantly higher in patients requiring TLR than those without TLR (1783±121 vs. 1587±205; p<0.01). The frequency of TLR significantly increased in association with a tertile of the AR10-AUC30 level (Figure 1, p for trend=0.003). As shown in Figure 2, univariate logistic regression analysis demonstrated male sex and the third tertile of the AR10-AUC30 level compared to its first or second tertiles were significantly associated with TLR in patients with CLI, whereas platelet count, PT-INR, APTT, and atherosclerotic risk factors including glycated hemoglobin, low-density lipoprotein cholesterol, and renal function were not. Multivariate logistic regression analysis also revealed that the AR10-AUC30 level ≥1707 (=its third tertile) as an independent predictor for TLR, even after adjusted by age and sex (OR=6.28, 95% CI=1.18–33.3, p=0.03).
Conclusions
In patients with CLI, the AR10-AUC30 level measured by the T-TAS may be a potential predictor to identify the high-risk patients requiring TLR after EVT. This finding suggests the hypercoagulability in CLI patients and that an anticoagulant agent following EVT may be useful in preventing a restenosis in CLI patients. Further study with a larger sample size is warranted to validate this finding.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
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Affiliation(s)
- N Kuyama
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - K Kaikita
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - T Mitsuse
- Arao Municipal Hospital, Cardiology, Arao, Japan
| | - K Fujisue
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - N Nakanishi
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - N Tabata
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - K Yamanaga
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - D Sueta
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - H Kanazawa
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - S Takashio
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - S Araki
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - Y Arima
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - E Yamamoto
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - K Matsushita
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
| | - K Tsujita
- Kumamoto University, Cardiovascular medicine, Kumamoto, Japan
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3
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Niwa F, Kawai M, Kanazawa H, Okanoya K, Myowa M. The development of the hypothalamus-pituitary-adrenal axis during infancy may be affected by antenatal glucocorticoid therapy. J Neonatal Perinatal Med 2020; 13:55-61. [PMID: 31609703 DOI: 10.3233/npm-180040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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] [Indexed: 06/10/2023]
Abstract
BACKGROUND Developmental changes in the hypothalamus-pituitary-adrenal (HPA) axis during infancy have been reported in term infants, but those in preterm infants have yet to be elucidated. If developmental changes in the HPA axis of preterm infants are modulated by any factors, it may affect their future health. Few studies have examined the lasting consequences of antenatal glucocorticoids on the development of the HPA axis. METHODS We measured pre- and post-palivizumab vaccination salivary cortisol values in two conforming periods of three-months intervals during infancy, and compared cortisol values and the response of cortisol secretion between groups with and without antenatal glucocorticoid (AG) therapy. RESULTS Although the strength of the response of cortisol secretion to palivizumab fell age-dependently (until late infancy) in the Non-AG group, the opposite pattern was exhibited in the AG group. The changes of the delta cortisol values between the 2 groups were significant. CONCLUSIONS This study suggests that the HPA axis of preterm infants whose mothers receive AG therapy may be upregulated during infancy, possibly leading to long lasting health problems.
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Affiliation(s)
- F Niwa
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Japan
- Japan Science and Technology Agency, ERATO Okanoya Emotional Information Project, Japan
| | - M Kawai
- Department of Pediatrics, Graduate School of Medicine, Kyoto University, Japan
| | - H Kanazawa
- Graduate School of Information Science and Technology, The University of Tokyo, Japan
- Research Fellow of the Japan Society for the Promotion of Science, Japan
| | - K Okanoya
- Joint Research Laboratory for Emotional Information, Riken Brain Science Institute, and Department of Life Sciences, Graduate School of Arts and Sciences, the University of Tokyo, Japan
- Japan Science and Technology Agency, ERATO Okanoya Emotional Information Project, Japan
| | - M Myowa
- Japan Science and Technology Agency, ERATO Okanoya Emotional Information Project, Japan
- Graduate School of Education, Kyoto University, Japan
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4
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Fujii H, Fujita A, Kanazawa H, Sung E, Sakai O, Sugimoto H. Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol 2019; 40:1037-1042. [PMID: 31122915 DOI: 10.3174/ajnr.a6078] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/21/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Reliable preoperative facial nerve mapping may help avoid or minimize facial nerve injury during parotid tumor resection. The purpose of this study was to investigate the diagnostic performance of the 3D double-echo steady-state with water excitation sequence in localizing parotid gland tumors through direct visualization of the intraparotid facial nerve in comparison with indirect methods of estimating the facial nerve location. MATERIALS AND METHODS We retrospectively reviewed 91 parotid gland tumors in 90 patients who underwent surgical resection and preoperative MR imaging, including the 3D double-echo steady-state with water excitation sequence. The tumor locations were categorized as deep or superficial on the basis of direct and 3 indirect methods: the facial nerve line, retromandibular vein, and Utrecht line. Surgical localization was considered the criterion standard. The diagnostic performance for localizing deep lobe lesions using direct and indirect methods was calculated and compared using the McNemar test. RESULTS Surgical localization confirmed 75 superficial lesions and 16 deep lesions. The interobserver variability of the 3D double-echo steady-state with water excitation sequence was excellent (κ = 0.870). The diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for localizing deep lobe lesions using the 3D double-echo steady-state with water excitation method were 97.8%, 87.5%, 100%, 100%, and 97.4%, respectively. These findings were significantly higher than the facial nerve line in sensitivity, the retromandibular vein in sensitivity, and the Utrecht line in accuracy and specificity (P < .05). Overall, the direct method was the most accurate, sensitive, and specific in localizing parotid gland tumors. CONCLUSIONS We can achieve higher diagnostic performance in localizing parotid gland tumors by directly visualizing the intraparotid facial nerve using the 3D double-echo steady-state with water excitation sequence compared with indirect methods.
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Affiliation(s)
- H Fujii
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - A Fujita
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - H Kanazawa
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - E Sung
- Departments of Radiology (E.S., O.S.)
| | - O Sakai
- Departments of Radiology (E.S., O.S.).,Otolaryngology-Head and Neck Surgery (O.S.).,Radiation Oncology (O.S.), Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - H Sugimoto
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
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5
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Mali V, Fukuda A, Shigeta T, Uchida H, Kanazawa H, Hirata Y, Rahayatri T, Chiaki B, Sasaki K, Kitamura M, Sakamoto S, Kasahara M. Mild to Moderate Intrapulmonary Shunting in Pediatric Liver Transplantation: Is Screening Necessary? Transplant Proc 2018; 50:3496-3500. [DOI: 10.1016/j.transproceed.2018.05.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/23/2018] [Indexed: 01/26/2023]
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6
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Shimizu S, Matsushita H, Minami A, Kanazawa H, Suzuki T, Watanabe K, Wakatsuki A. Royal jelly does not prevent bone loss but improves bone strength in ovariectomized rats. Climacteric 2018; 21:601-606. [PMID: 30296854 DOI: 10.1080/13697137.2018.1517739] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Royal jelly (RJ) has been used for medical and nutritional purposes, and previous studies have indicated that it may have estrogenic activity. The present study investigated the effects of RJ on bone metabolism in ovariectomized (OVX) rats. METHODS Rats (12 weeks old) were randomly divided into four groups, namely Baseline, Sham, OVX, and OVX + RJ groups. Rats in the Baseline group were killed immediately, whereas rats in the OVX and OVX + RJ groups underwent bilateral ovariectomy and those in the Sham group underwent sham operation. RJ was administered to rats in the OVX + RJ group daily for 12 weeks. At the end of the 12-week period, bone mass, bone histomorphometry, and bone mechanics were analyzed. RESULTS Femur bone mineral density (BMD) was significantly lower in the OVX group than in the Sham group, and this decrease in BMD was not ameliorated by RJ administration. However, femur stiffness, as evaluated by a three-point bending test, was significantly higher in the OVX + RJ group than in the OVX group. CONCLUSION The findings of the present study suggest that RJ does not prevent bone loss, but does improve bone strength in OVX rats.
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Affiliation(s)
- S Shimizu
- a Department of Obstetrics and Gynecology, School of Medicine , Aichi Medical University , Nagakute , Japan
| | - H Matsushita
- a Department of Obstetrics and Gynecology, School of Medicine , Aichi Medical University , Nagakute , Japan
| | - A Minami
- b Department of Biochemistry, School of Pharmaceutical Sciences , University of Shizuoka , Shizuoka , Japan
| | - H Kanazawa
- c Department of Functional Anatomy, School of Nursing , University of Shizuoka , Shizuoka , Japan
| | - T Suzuki
- b Department of Biochemistry, School of Pharmaceutical Sciences , University of Shizuoka , Shizuoka , Japan
| | - K Watanabe
- a Department of Obstetrics and Gynecology, School of Medicine , Aichi Medical University , Nagakute , Japan
| | - A Wakatsuki
- a Department of Obstetrics and Gynecology, School of Medicine , Aichi Medical University , Nagakute , Japan
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7
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Ito M, Kaikita K, Sueta D, Ishii M, Oimatsu Y, Mitsuse T, Arima Y, Iwashita S, Takahashi A, Kanazawa H, Kaneko S, Kanemaru Y, Kiyama T, Yamabe H, Tsujita K. P2504Inappropriate dose of direct oral anticoagulants therapy in patients with non-valvular atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Ito
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - K Kaikita
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - D Sueta
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - M Ishii
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - Y Oimatsu
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - T Mitsuse
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - Y Arima
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - S Iwashita
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - A Takahashi
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - H Kanazawa
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - S Kaneko
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - Y Kanemaru
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - T Kiyama
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - H Yamabe
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
| | - K Tsujita
- Kumamoto University Hospital, Department of Cardiovascular Medicine, Kumamoto University Graduate School of Medical Science, Kumamoto, Japan
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8
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Nakajima K, Fujita J, Tohyama S, Ohno R, Kanazawa H, Seki T, Kishino Y, Okada M, Kawaguchi S, Tanosaki S, Someya S, Shimizu H, Tabata Y, Kobayashi E, Fukuda K. P2542The regenerative therapy of human induced pluripotent stem cells-derived pure cardiac spheroids with gelatin hydrogel restores cardiac function and has weak arrhythmogenic property in heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2542] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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9
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Kawaguchi S, Fujita J, Hirano A, Kanazawa H, Tohyama S, Handa N, Okuda S, Hishikawa S, Kunita S, Seki T, Nakajima K, Tabata Y, Kobayashi E, Shimizu H, Fukuda K. P2560The regenerative therapy with human iPS cells-derived cardiac spheroids and gelatin hydrogel significantly improves cardiac function and cause no lethal arrhythmia in a pig model of heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2560] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Iizuka T, Masui K, Miyabe-Nishiwaki T, Kanazawa H, Nishimura R. Propofol-fentanyl interaction in Beagles - Apnea, response to mechanical ventilation, endotracheal tube, and tetanic stimulation. Res Vet Sci 2017; 115:34-42. [PMID: 28152385 DOI: 10.1016/j.rvsc.2017.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 05/16/2016] [Revised: 11/28/2016] [Accepted: 01/20/2017] [Indexed: 12/25/2022]
Abstract
The objective of this study was to characterize the propofol-fentanyl interaction in Beagles for four pharmacodynamic endpoints: apnea, response to mechanical ventilation, endotracheal tube, and tetanic stimulation. After anesthesia was induced with varying combinations of propofol and fentanyl, the pharmacodynamic endpoints were assessed in intubated dogs (n=6) using the cross-over design. Effective concentrations of propofol plasma concentration (Cp) and fentanyl Cp were assessed using additive, reduced Greco, Minto, and hierarchical interaction models. The interaction was best described as synergistic by the hierarchical model. A 1ng/mL fentanyl Cp reduced the effective propofol Cp to half or less of that without fentanyl for all endpoints. An additional increment of fentanyl Cp to 5ng/mL or higher hardly reduced effective propofol Cp for all endpoints except response to tetanic stimulation. Additionally, the effective propofol Cp in 50% dogs for response to tetanic stimulation (15% increase of heart rate) was lower than that for the other endpoints at fentanyl Cp >7ng/mL. Peripheral oxygen saturation decreased below 90% after extubation in five treatments in which fentanyl Cps were ≥5ng/mL. Propofol and fentanyl interacted synergistically. To avoid patient-ventilator dyssynchrony and hypoxemia after extubation, fentanyl Cp at 1-5ng/mL may be appropriate in intubated dogs. When a dog responds to mechanical ventilation or endotracheal tube at a high fentanyl Cp >5ng/mL under propofol anesthesia even if the dog tolerate to tetanic stimulation, it may be necessary to increase propofol Cp to eliminate the responses because an additional fentanyl may be little impact.
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Affiliation(s)
- T Iizuka
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Masui
- Department of Anesthesiology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan.
| | - T Miyabe-Nishiwaki
- Center of Human Evolution Modeling Research, Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan
| | - H Kanazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - R Nishimura
- Laboratory of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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11
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Mali VP, Fukuda A, Shigeta T, Uchida H, Hirata Y, Rahayatri TH, Kanazawa H, Sasaki K, de Ville de Goyet J, Kasahara M. Total internal biliary diversion during liver transplantation for type 1 progressive familial intrahepatic cholestasis: a novel approach. Pediatr Transplant 2016; 20:981-986. [PMID: 27534385 DOI: 10.1111/petr.12782] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/13/2016] [Indexed: 12/11/2022]
Abstract
LT for PFIC type 1 is often complicated by postoperative diarrhea and recurrent graft steatosis. A 26-month-old female child with cholestatic jaundice, pruritus, diarrhea, and growth retardation revealed total bilirubin 9.1 mg/dL, gamma-glutamyl transpeptidase 64 IU/L, and TBA 295.8 μmol/L. Genetic analysis confirmed ATP8B1 defects. A LT (segment 2, 3 graft) from the heterozygous father was performed. Biliary diversion was performed by a 35-cm jejunum conduit between the graft hepatic duct and the mid-transverse colon. Stools became pigmented immediately. Follow-up at 138 days revealed resolution of jaundice and pruritus and soft-to-hard stools (6-8 daily). Radioisotope hepato-biliary scintigraphy (days 26, 68, and 139) confirmed unobstructed bile drainage into the colon (t1/2 34, 27, and 19 minutes, respectively). Contrast meal follow-through at day 62 confirmed the absence of any colo-jejuno-hepatic reflux. At 140 days, contrast follow-through via the biliary stent revealed patent jejuno-colonic anastomosis and satisfactory transit. Graft biopsy at LT, 138 days, and 9 months follow-up revealed comparable grades of macrovesicular steatosis (<20%). TIBD during LT may be a clinically effective stoma-free biliary diversion and may prevent recurrent graft steatosis following LT for PFIC type 1.
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Affiliation(s)
- V P Mali
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan.
| | - A Fukuda
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - T Shigeta
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Uchida
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - Y Hirata
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - T H Rahayatri
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Kanazawa
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - K Sasaki
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - J de Ville de Goyet
- Department of Surgery and Transplantation Centre, Bambino Gesù Children's Hospital, Rome, Italy.,Paediatric Surgery Chair, Università di Roma Tor Vergata, Rome, Italy
| | - M Kasahara
- Organ Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
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12
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Minami A, Matsushita H, Ieno D, Matsuda Y, Horii Y, Ishii A, Takahashi T, Kanazawa H, Wakatsuki A, Suzuki T. Improvement of neurological disorders in postmenopausal model rats by administration of royal jelly. Climacteric 2016; 19:568-573. [PMID: 27736245 DOI: 10.1080/13697137.2016.1238452] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Royal jelly (RJ) from honeybees (Apis mellifera) has estrogenic activity. Estrogen deficiency after menopause leads to a high risk of memory impairment and depression as well as metabolic syndrome and osteoporosis. We here investigated the effect of RJ on memory impairment and depression-like behaviors in ovariectomized (OVX) rats. METHODS OVX rats were administered with RJ for 82 days. Hippocampus-dependent spatial memory and depression-like behaviors were assessed by the Morris water maze test and the forced swimming test, respectively. The weights of body, brain and uterus and the contents of protein and myelin galactolipids including galactosylceramide and sulfatide were measured. RESULTS Memory impairment and depression-like behaviors in OVX rats were recovered to the levels of sham-operated rats by RJ administration. Increased body weight and decreased uterine weight in OVX rats were recovered to the levels of sham-operated rats by 17β-estradiol (E2) administration but not by RJ administration. In contrast, brain weight was slightly increased by RJ administration but not by E2 administration. The contents of protein and myelin galactolipids were higher in the brains of RJ-administered OVX rats than in the brains of E2-administered OVX rats. CONCLUSION The results suggest that RJ has a beneficial effect on neurological symptoms of a menopausal disorder.
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Affiliation(s)
- A Minami
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - H Matsushita
- b Department of Obstetrics and Gynecology , School of Medicine, Aichi Medical University , Nagakute , Japan
| | - D Ieno
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - Y Matsuda
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - Y Horii
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - A Ishii
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - T Takahashi
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
| | - H Kanazawa
- c Department of Functional Anatomy, School of Nursing , University of Shizuoka , Shizuoka , Japan
| | - A Wakatsuki
- b Department of Obstetrics and Gynecology , School of Medicine, Aichi Medical University , Nagakute , Japan
| | - T Suzuki
- a Department of Biochemistry , School of Pharmaceutical Sciences, University of Shizuoka , Shizuoka , Japan
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13
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Fujii H, Fujita A, Yang A, Kanazawa H, Buch K, Sakai O, Sugimoto H. Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol 2015; 36:1333-7. [PMID: 25836724 DOI: 10.3174/ajnr.a4288] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/17/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although visualization of the extracranial branches of the cranial nerves has improved with advances in MR imaging, only limited studies have assessed the detection of extracranial branches of the mandibular nerve (V3). We investigated the detectability of the branches of V3 on a 3D double-echo steady-state with water excitation sequence. MATERIALS AND METHODS We retrospectively evaluated the detectability of the 6 branches of the V3, the masseteric, buccal, auriculotemporal, lingual, inferior alveolar, and mylohyoid nerves, by using a 5-point scale (4, excellent; 3, good; 2, fair; 1, poor; and 0, none) in 86 consecutive patients who underwent MR imaging with the 3D double-echo steady-state with water excitation sequence. Weighted κ analysis was used to calculate interobserver variability among the 3 readers. RESULTS The detection of the lingual and inferior alveolar nerves was the most successful, with excellent average scores of 3.80 and 3.99, respectively. The detection of the masseteric, the buccal, and the auriculotemporal nerves was good, with average scores of 3.31, 2.67, and 3.11, respectively. The mylohyoid nerve was difficult to detect with poor average scores of 0.62. All nerves had excellent interobserver variability across the 3 readers (average weighted κ value, 0.95-1.00). CONCLUSIONS The 3D double-echo steady-state with water excitation sequence demonstrated excellent visualization of the extracranial branches of V3 in most patients. The 3D double-echo steady-state with water excitation sequence has the potential for diagnosing V3 pathologies and preoperatively identifying peripheral cranial nerves to prevent surgical complications.
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Affiliation(s)
- H Fujii
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
| | - A Fujita
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan Departments of Radiology (A.F., K.B., O.S.)
| | - A Yang
- Boston University School of Medicine (A.Y.), Boston, Massachusetts
| | - H Kanazawa
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
| | - K Buch
- Departments of Radiology (A.F., K.B., O.S.)
| | - O Sakai
- Departments of Radiology (A.F., K.B., O.S.) Otolaryngology-Head and Neck Surgery (O.S.) Radiation Oncology (O.S.), Boston Medical Center
| | - H Sugimoto
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
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Hanessian S, Saavedra OM, Vilchis-Reyes MA, Maianti JP, Kanazawa H, Dozzo P, Matias RD, Serio A, Kondo J. Synthesis, broad spectrum antibacterial activity, and X-ray co-crystal structure of the decoding bacterial ribosomal A-site with 4′-deoxy-4′-fluoro neomycin analogs. Chem Sci 2014. [DOI: 10.1039/c4sc01626b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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15
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Kanazawa H, Kawai M, Niwa F, Hasegawa T, Iwanaga K, Ohata K, Tamaki A, Heike T. Subcutaneous fat accumulation in early infancy is more strongly associated with motor development and delay than muscle growth. Acta Paediatr 2014; 103:e262-7. [PMID: 24528278 DOI: 10.1111/apa.12597] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 01/11/2014] [Accepted: 02/10/2014] [Indexed: 11/28/2022]
Abstract
AIM Physical growth in neurologically healthy preterm infants affects motor development. This study investigated the separate relationships between muscle and fat in infancy and later motor development and physical growth. METHODS Muscle thickness and subcutaneous fat thickness of the anterior thigh were measured using ultrasound images obtained from neurologically healthy preterm infants at birth, 3, 6, 12 and 18 months' corrected age. We also obtained the Pediatric Evaluation of Disability Inventory and Alberta Infant Motor Scale scores at 18 months' corrected age to assess motor ability and motor delay. RESULTS Thirty preterm infants completed the study protocol. There was a significant positive correlation between motor ability and increments in subcutaneous fat thickness during the first 3 and 6 months' corrected age (r = 0.48 and 0.40, p < 0.05, respectively), but not between motor ability and muscle thickness growth in any of the periods. A secondary, logistic regression analysis showed that increments in subcutaneous fat thickness during the first 3 months were a protective factor for motor delay. CONCLUSION Subcutaneous fat accumulation in early infancy is more strongly associated with motor development and delay than muscle growth.
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Affiliation(s)
- H Kanazawa
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
- Research fellow of the Japan Society for the Promotion of Science; Tokyo Japan
| | - M Kawai
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
| | - F Niwa
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
| | - T Hasegawa
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
| | - K Iwanaga
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
| | - K Ohata
- Human Health Sciences; Graduate School of Medicine; Kyoto University; Kyoto Japan
| | - A Tamaki
- Department of Rehabilitation Science; Graduate School of Health Science; Hyogo University of Health Sciences; Hyogo Japan
| | - T Heike
- Department of Pediatrics; Graduate School of Medicine; Kyoto University; Kyoto Japan
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16
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Fukuda A, Sakamoto S, Shigeta T, Uchida H, Hamano I, Sasaki K, Kanazawa H, Loh DL, Kakee N, Nakazawa A, Kasahara M. Clinical outcomes and evaluation of the quality of life of living donors for pediatric liver transplantation: a single-center analysis of 100 donors. Transplant Proc 2014; 46:1371-6. [PMID: 24836837 DOI: 10.1016/j.transproceed.2013.12.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Accepted: 12/16/2013] [Indexed: 01/10/2023]
Abstract
There are few reports about the quality of life (QOL) and morbidities of pediatric living donor liver transplantation (LDLT) donors. We evaluated the potential morbidities and identified the predictive factors regarding the QOL of living donors after pediatric LDLT. This cross-sectional study was a single-center analysis of 100 donors for pediatric LDLT. The severity of morbidities was assessed with the Clavien classification, the QOL was investigated with the short form-36 (SF-36), and the decision-making process regarding donation was analyzed with questionnaires. The median follow-up period was 3.8 years (range, 2.2-6.0 years). A total of 13% of the donors developed postoperative complications of Clavien grades I (7%), II (3%), and IIIA (3%). There was no grade IV morbidity or mortality. Eighty-one donors responded to the questionnaire and SF-36. The analysis of the questionnaires revealed that the donors had difficulty in the decision-making process, and suggested that it may be necessary to administer multistep informed consent. We identified unique predictive risk factors for lower SF-36 scores in the donors, which were the time to donation (more than 4 weeks) and the predonation self-oriented perception. The donors who have risk factors require enhanced pre- and post-donation psychological care.
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Affiliation(s)
- A Fukuda
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan.
| | - S Sakamoto
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - T Shigeta
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Uchida
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - I Hamano
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - K Sasaki
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - H Kanazawa
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - D L Loh
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - N Kakee
- Department of Health Policy, National Research Institute for Child Health and Development, Tokyo, Japan
| | - A Nakazawa
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
| | - M Kasahara
- Transplantation Center, National Center for Child Health and Development, Tokyo, Japan
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17
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Matsuno N, Obara H, Watanabe R, Iwata S, Kono S, Fujiyama M, Hirano T, Kanazawa H, Enosawa S. Rewarming Preservation by Organ Perfusion System for Donation After Cardiac Death Liver Grafts in Pigs. Transplant Proc 2014; 46:1095-8. [DOI: 10.1016/j.transproceed.2013.12.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/03/2013] [Accepted: 12/11/2013] [Indexed: 11/24/2022]
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18
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Ohyama Y, Matsushita H, Minami A, Kanazawa H, Suzuki T, Watanabe K, Wakatsuki A. Effect of the ethanol extract ofPleurotus eryngiion bone metabolism in ovariectomized rats. Climacteric 2014; 17:492-9. [DOI: 10.3109/13697137.2014.891197] [Citation(s) in RCA: 2] [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: 12/26/2022]
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19
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Shigeta T, Matsuno N, Obara H, Kanazawa H, Tanaka H, Fukuda A, Sakamoto S, Kasahara M, Mizunuma H, Enosawa S. Impact of rewarming preservation by continuous machine perfusion: improved post-transplant recovery in pigs. Transplant Proc 2014; 45:1684-9. [PMID: 23769024 DOI: 10.1016/j.transproceed.2013.01.098] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 01/16/2013] [Accepted: 01/31/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND Utilization of grafts from donors after cardiac death (DCD) greatly expands the organ pool. However, implementation of such a strategy requires the development of novel preservation methods to achieve recovery from changes owing to warm ischemia. METHODS To assess potential methods, porcine livers harvested after 60 minutes of warm ischemic time (WIT) were perfused and preserved under the following conditions: Group 1 (n = 3), 2-hour simple cold storage and 2-hour machine perfusion (MP) at 8°C; group 2 (n = 3), 2 hours at 25°C and MP at 25°C and group 3 (n = 3), 2-hour simple cold storage and gradual rewarming to 25°C by MP. The preserved liver grafts were transplanted orthotopically into recipients. RESULTS The aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and hyaluronic acid (HA) levels in recipient blood at 2 hours after reperfusion were significantly lower among group 3: AST, 789 ± 258.8, 1203 ± 217.0, and 421 ± 55.8 IU/L; LDH, 1417 ± 671.2, 2132 ± 483.9, and 634 ± 263.9 IU/L; and HA, 1660 ± 556.5, 1463 ± 332.3, and 575 ± 239.0 ng/mL for groups 1, 2 and 3, respectively. Histologically, necrosis and swelling of hepatocytes were less severe among group 3 than groups 1 and 2. Group 3 animals showed better vital responses and started spontaneous breathing within 2 hours after reperfusion; 1 recipient survived for >24 hours, although all animals in groups 1 and 2 died within 2 to 3 hours after reperfusion. CONCLUSION Rewarming by MP preservation may facilitate recovery and resuscitation of DCD liver grafts.
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Affiliation(s)
- T Shigeta
- National Center for Child Health and Development, Transplantation Center, Division for Advanced Medical Sciences, Tokyo, Japan
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20
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Yoshikawa T, Kanazawa H. Cellular signaling crosstalk between multiple receptors for investigation of pathophysiology in multifactorial diseases--what is clinically-relevant crosstalk? Curr Med Chem 2013; 20:1091-102. [PMID: 23317163 DOI: 10.2174/0929867311320090001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 12/19/2012] [Accepted: 01/06/2013] [Indexed: 11/22/2022]
Abstract
Recently, genomics and proteomics have been utilized as advanced tools for investigation of cellular signaling pathways and molecular interactions, and elucidated promiscuous networks composed of numerous interactions among pathways. However, some of these interactions are considered to be simply contributing to background 'noise' and others are as 'crosstalk' biologically-relevant to cellular physiology, leading to synergy effects more than additive responses in an entire organism. Effort is now required to determine which interactions truly contribute to final physiological output. A receptor is the prime example of connectors among the networks. It functions, not simply as a signaling gateway, but also as an active trader by forming inter-receptor dimers. Furthermore, various receptors can modulate the function of the other receptors by input to common intracellular signaling pathways, establishing functional crosstalk among networks. Our findings by combined analyses of gene polymorphisms of two separate genes present evidences that such is the case with human body in a clinical setting: 1) an integrated effect of epidermal growth factor receptor (EGFR) and protease activated receptor-1 (PAR-1) on susceptibility to airway hyperresponsiveness (AHR), and 2) a crosstalk effect between muscarinic acetylcholine receptor (mAChRs) and β(2) adrenoceptor (β(2)AR) on bronchodilatory response to anticholinergic agents in patients with COPD. These results indicate that these interactions are unlikely to be 'noise' but functionally-relevant 'crosstalk' in a human body. This review attempts to highlight the clinically-relevant 'crosstalk' paradigm in a human body which provides us a novel insight necessary to investigate pathophysiology in common multifactorial diseases and to develop new drugs.
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Affiliation(s)
- T Yoshikawa
- Department of Sports Medicine, Osaka City University Graduate School of Medicine, 1-4-3, Asahimachi, Osaka, 545-8585, Japan.
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21
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Arai T, Kimura K, Kanazawa H, Munakata M, Sukegawa H, Tabei R, Ieda M, Yuasa S, Fukuda K. Upregulation of neuropeptide Y in the cardiac sympathetic nerves causes stress (takotsubo) cardiomyopathy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1203] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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22
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Kanazawa H, Yamamoto K, Matsushima Y, Takai N, Kikuchi A, Sakurai Y, Okano T. Temperature-Responsive Chromatography Using Poly(N-isopropylacrylamide)-Modified Silica. Anal Chem 2012; 68:100-5. [PMID: 21619225 DOI: 10.1021/ac950359j] [Citation(s) in RCA: 372] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new concept in chromatography is proposed that utilizes a temperature-responsive surface with a constant aqueous mobile phase. The surface of the silica stationary phase in high-performance liquid chromatography (HPLC) has been modified with temperature-responsive polymers to exhibit temperature-controlled hydrophilic/hydrophobic changes. Poly(N-isopropylacrylamide) (PIPAAm) was grafted onto (aminopropyl)silica using an activated ester-amine coupling method. These grafted silica surfaces show hydrophilic properties at lower temperatures which, as temperature increases, transform to hydrophobic surface properties. The elution profile of five mixed steroids on an HPLC column packed with this material depends largely on the temperature of the aqueous mobile phase. Retention times increase with increasing temperature without any change in the eluent. Changes in the retention times of hydrophobic steroids were larger than those for hydrophilic steroids. The temperature-responsive interaction between PIPAAm-modified silica and these steroids is proposed to result from changes in the surface properties of the HPLC stationary phase by the transition of hydrophilic/hydrophobic surface-grafted IPAAm polymers. We demonstrate a novel and useful new chromatography system in which surface properties and the resulting function of the HPLC stationary phase are controlled by external temperature changes. This method should be effective in biological and biomedical separations of peptides and proteins using only aqueous mobile phases.
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Affiliation(s)
- H Kanazawa
- Kyoritsu College of Pharmacy, 1-5-30 Shiba-koen, Minato, Tokyo 105, Japan
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23
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Kondo C, Atsukawa M, Tsubota A, Itokawa N, Fukuda T, Matsushita Y, Kidokoro H, Kobayashi T, Narahara Y, Nakatsuka K, Kanazawa H, Sakamoto C. An open-label randomized controlled study of pegylated interferon/ribavirin combination therapy for chronic hepatitis C with versus without fluvastatin. J Viral Hepat 2012; 19:615-22. [PMID: 22863265 DOI: 10.1111/j.1365-2893.2011.01584.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [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: 01/08/2023]
Abstract
Pegylated interferon (PEG-IFN)/ribavirin combination therapy is the standard-of-care (SOC) treatment for chronic hepatitis C patients infected with hepatitis C virus (HCV) genotype 1b and high viral load. The addition of fluvastatin to SOC treatment has been suggested to be effective for better outcome in retrospective pilot analyses. We investigated whether the combination of fluvastatin with PEG-IFN/ribavirin could actually improve sustained viral response (SVR) in patients with HCV genotype 1b and high viral load. A randomized, open-labeled, controlled study was conducted between July 2008 and December 2009 in 101 chronic hepatitis C patients allocated to PEG-IFN/ribavirin combination therapy with or without fluvastatin. SVR rates were calculated in groups, stratifying host and viral factors. We also analyzed predictive factors for SVR among patients on fluvastatin with multivariate regression analysis. Rapid and early virological, and end of treatment response rates in the fluvastatin group were not significantly different from those in the non-fluvastatin group. Notwithstanding, SVR rate was significantly higher in the fluvastatin group than in the non-fluvastatin group (63.0%vs 41.7%, P = 0.0422). Comparison of the two groups stratifying demographic data and HCV characteristics showed significantly higher SVR rates to more than 80% in males, more than two mutations in the interferon sensitivity determining region (ISDR), and a history of relapse among the fluvastatin group than the non-fluvastatin group. Being male and major genotype IL28B single nucleotide polymorphisms (SNPs) were independent predictive factors for SVR among patients on fluvastatin with multivariate analysis. Fluvastatin-combined with PEG-IFN/ribavirin therapy significantly improves SVR rates in patients with HCV genotype 1b and high viral load. Male and major genotype IL28B SNPs were independent predictors for SVR among patients on fluvastatin combination therapy.
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Affiliation(s)
- C Kondo
- Division of Gastroenterology, Department of Internal Medicine, Nippon Medical School Chiba Hokusoh Hospital, Inzai, Chiba, Japan
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Miyabe-Nishiwaki T, Masui K, Kaneko A, Nishiwaki K, Nishio T, Kanazawa H. Evaluation of the predictive performance of a pharmacokinetic model for propofol in Japanese macaques (Macaca fuscata fuscata). J Vet Pharmacol Ther 2012; 36:169-73. [PMID: 22568878 DOI: 10.1111/j.1365-2885.2012.01404.x] [Citation(s) in RCA: 11] [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] [Indexed: 11/28/2022]
Abstract
Propofol is a short-acting intravenous anesthetic used for induction/maintenance anesthesia. The objective of this study was to assess a population pharmacokinetic (PPK) model for Japanese macaques during a step-down infusion of propofol. Five male Japanese macaques were immobilized with ketamine (10 mg/kg) and atropine (0.02 mg/kg). A bolus dose of propofol (5 mg/kg) was administrated intravenously (360 mg/kg/h) followed by step-down infusion at 40 mg/kg/h for 10 min, 20 mg/kg/h for 10 min, and then 15 mg/kg/h for 100 min. Venous blood samples were repeatedly collected following the administration. The plasma concentration of propofol (Cp) was measured by high-speed LC-FL. PPK analyses were performed using NONMEM VII. Median absolute prediction error and median prediction error (MDPE), the indices of prediction inaccuracy and bias, respectively, were calculated, and PE - individual MDPE vs. time was depicted to show the variability of prediction errors. In addition, we developed another population pharmacokinetic model using previous and current datasets. The previous PK model achieved stable prediction of propofol Cp throughout the study period, although it underestimates Cp. The step-down infusion regimen described in this study would be feasible in macaques during noninvasive procedures.
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Affiliation(s)
- T Miyabe-Nishiwaki
- Center of Human Evolution Modeling Research, Primate Research Institute, Aichi University, Kyoto, Japan
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25
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Shigeta T, Matsuno N, Obara H, Mizunuma H, Kanazawa H, Tanaka H, Fukuda A, Sakamoto S, Kasahara M, Uemoto S, Enosawa S. Functional Recovery of Donation After Cardiac Death Liver Graft by Continuous Machine Perfusion Preservation in Pigs. Transplant Proc 2012; 44:946-7. [DOI: 10.1016/j.transproceed.2012.01.078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Ogura Y, Kanazawa H, Yoshizawa A, Nitta T, Ikeda T, Uemoto S. Supradiaphragmatic approach for Budd-Chiari syndrome with transjugular intrahepatic portosystemic shunt stent in combination with inferior vena cava reconstruction during living donor liver transplantation: a case report. Transplant Proc 2011; 43:2093-6. [PMID: 21693334 DOI: 10.1016/j.transproceed.2011.03.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 03/15/2011] [Indexed: 02/08/2023]
Abstract
Treatment of Budd-Chiari syndrome consists of medical management, surgical shunt, transjugular intrahepatic portosystemic shunt (TIPS), and liver transplantation. Liver transplantation is indicated only when other treatments have failed. A 36-year-old Japanese man underwent living-donor liver transplantation after radiologic intervention procedures. Because of the position of the TIPS stent and the damaged vascular lesion of Budd-Chiari syndrome, a supradiaphragmatic approach was employed to achieve a safe total hepatectomy. Moreover, after resection of damaged portion of the inferior vena cava (IVC), an artificial vascular graft was utilized to fill the IVC gap. The postoperative course was uneventful; no serious complications were experienced within 2 years after liver transplantation. This supradiaphragmatic IVC approach and IVC reconstruction technique emphasized the option of surgical techniques to decrease the operative risk during liver transplantation for Budd-Chiari syndrome.
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Affiliation(s)
- Y Ogura
- Department of Surgery, HPB and Transplantation Surgery, Kyoto University Hospital, Kyoto City, Japan.
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27
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Abstract
Sialadenoma papilliferum (SP) is a benign non-invasive lesion with slow and limited growth. This report describes an unusual SP that enlarged rapidly and presented as an extensive intraoral tumour highly suspicious for verrucous carcinoma. Radiographic resorption of the underlying bone was evident in the mandible. This type of destructive growth does not conform to any previously reported SP. Histological features were also atypical: surface verrucous hyperplasia and deeper florid cystic-duct adenoma. Overall, the SP is likely to be considered a borderline lesion with malignant potential. Four published cases of malignancy associated with SP showed completely different clinical and pathological settings, further obfuscating the concept of malignant SP.
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Affiliation(s)
- F Ide
- Division of Pathology, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Saitama 350-0283, Japan.
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28
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Kanazawa H, Asai K, Tochino Y, Kyoh S, Kodama T, Hirata K. Increased levels of angiopoietin-2 in induced sputum from smoking asthmatic patients. Clin Exp Allergy 2009; 39:1330-7. [PMID: 19438587 DOI: 10.1111/j.1365-2222.2009.03262.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Active cigarette smoking has detrimental effects on asthma morbidity and severity. Angiopoietin-1 has been shown to protect the microvessels against plasma leakage, whereas angiopoietin-2 enhances vascular permeability and subsequently induces airway mucosal oedema. Therefore, it is recently thought that angiopoietin-2 may contribute to the pathophysiology of asthma. OBJECTIVE To determine whether angiopoietin-2 levels in the airways are associated with clinical profiles in smoking asthmatics. METHODS We measured angiopoietin-1 and -2 levels in induced sputum in 35 normal controls (18 non-smokers and 17 smokers) and 49 asthmatics (24 non-smokers and 25 smokers) before and after inhaled beclomethasone dipropionate (BDP: 800 microg/day) therapy for 12 weeks. RESULTS Angiopoietin-1 and -2 levels in induced sputum were significantly higher in asthmatics than in normal controls. Moreover, angiopoietin-2 levels were significantly higher in smoking asthmatics than in non-smoking asthmatics (P=0.0001). The airway vascular permeability index was also higher in smoking asthmatics than in non-smoking asthmatics. Moreover, the angiopoietin-2 level was positively correlated with the airway vascular permeability index (non-smoking asthmatics: r=0.87, P<0.001, smoking asthmatics: r=0.64, P=0.002). After BDP therapy, angiopoietin-1 levels were significantly decreased in non-smoking asthmatics, smoking-cessation asthmatics, and active-smoking asthmatics. In contrast, angiopoietin-2 levels did not differ from before to after BDP therapy in non-smoking asthmatics and active-smoking asthmatics. However, its levels were significantly decreased from before to after BDP therapy in smoking-cessation asthmatics (P=0.002). Although forced expiratory volume in 1 s (FEV(1))/forced vital capacity (FVC) before BDP therapy was comparable in all subgroups, this parameter after BDP therapy was significantly lower in active-smoking asthmatics than in non-smoking and smoking-cessation asthmatics. Moreover, the reduction in angiopoietin-2 levels after BDP therapy in smoking-cessation asthmatics was significantly correlated with an improvement in FEV(1)/FVC. CONCLUSION Angiopoietin-2 levels were elevated in the airways of smoking asthmatics, and its levels were associated with impaired airway responses.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan.
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29
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Mitsui K, Hatakeyama K, Matsushita M, Kanazawa H. Saccharomyces cerevisiae Na+/H+ Antiporter Nha1p Associates with Lipid Rafts and Requires Sphingolipid for Stable Localization to the Plasma Membrane. J Biochem 2009; 145:709-20. [DOI: 10.1093/jb/mvp032] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Kanazawa H, Inada A, Takayuki A. Availability of solid-state polymerization of amino acid NCAs as compared with solution reactions. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808642x] [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: 11/10/2022] Open
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Ichimaru Y, Kanazawa H, Kamoi H, Kyoh S, Tochino Y, Kodama T, Hirata K. Correlations of health-related quality of life questionnaire results in asthma and allergic rhinitis: effects of a leukotriene receptor antagonist. J Int Med Res 2008; 36:559-66. [PMID: 18534139 DOI: 10.1177/147323000803600322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Bronchial asthma and allergic rhinitis frequently coexist. This study investigated correlations of health-related quality of life (QOL) questionnaires for these diseases, assessing whether the selective leukotriene receptor antagonist (LTRA), pranlukast, had additional benefits to overall asthma control when there was concomitant allergic rhinitis. Patients with asthma-associated allergic rhinitis were randomly allocated to either LTRA(+) (n = 21, treated for 3 months with pranlukast), or LTRA(-) (n = 8, no pranlukast). At study start and at 3 months, pulmonary function was evaluated and QOL assessments were made using the Asthma Health Questionnaire-Japan (AHQ-Japan) and the Japan Rhino-conjunctivitis Quality of Life Questionnaire (JRQLQ). Total scores were significantly correlated both before and after therapy. After 3 months' therapy, pulmonary function and total AHQ-Japan and JRQLQ scores significantly improved in the LTRA(+) group, but not in the LTRA(-) group. A significant correlation between change at 3 months in the AHQ-Japan and JRQLQ scores from baseline values was seen in the LTRA(+) group. LTRA therapy improved allergic rhinitis symptoms, asthma symptoms and pulmonary function.
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Affiliation(s)
- Y Ichimaru
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abenoku, Osaka, Japan.
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Abstract
OBJECTIVE Tumour budding, defined as small clusters of undifferentiated cancer cells at invasive margins, has been shown to reflect biologic aggressiveness of colorectal cancers. We therefore examined the prognostic significance of tumour budding in patients with colorectal carcinoma, particularly focusing on comparisons with other clinicopathological findings. METHOD Tumour budding was investigated in surgically resected specimens from 159 patients with colorectal carcinoma. With haematoxylin and eosin stained slides containing the entire invasive margin, the degree of tumour budding was classified into three grades: mild, <1/3 of the entire invasive margin; moderate, 1/3-2/3; marked, >2/3. RESULTS Mild tumour budding was found in 54 (34%) cases, moderate in 59 (37%) cases and marked in 46 (29%) cases. The degree of budding was linked with poor tumour differentiation, lymph node metastasis and advanced TNM stage (P < 0.001). In univariate analysis, patients with marked tumour budding [5-year cancer-related survival (CRS)/recurrence-free survival (RFS), 39%/53%] had significantly worse survival [CRS, hazard ratio (HR), 4.561; 95% confidence interval (CI), 2.265-9.184; P < 0.001; RFS, HR, 3.240; 95% CI, 1.430-7.342; P = 0.005] than those with mild (5-year CRS/RFS, 80%/82%) or moderate (63%/66%) budding. In the Cox regression model, marked tumour budding (HR, 3.137; 95% CI, 1.517-6.487; P = 0.002) and advanced tumour stage (stage III, HR, 3.226; 95% CI, 1.475-7.053; P = 0.003; stage IV, HR, 24.443; 95% CI, 10.843-55.100; P < 0.001) proved to be an independent predictor of short CRS. CONCLUSION Tumour budding is a practical and significant histological index for identification of high malignant potential and poor outcome in patients with colorectal carcinoma.
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Affiliation(s)
- H Kanazawa
- Department of Surgery, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
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Komada Y, Murata S, Tajima H, Kumita S, Kanazawa H, Tajiri T. Haemodynamic changes in the liver under balloon occlusion of a portal vein branch: evaluation with single-level dynamic computed tomography during hepatic arteriography. Clin Radiol 2007; 62:579-86. [PMID: 17467396 DOI: 10.1016/j.crad.2007.01.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 09/23/2006] [Revised: 12/23/2006] [Accepted: 01/11/2007] [Indexed: 02/08/2023]
Abstract
AIM To assess haemodynamic changes in the liver under temporary occlusion of an intrahepatic portal vein. MATERIALS AND METHODS Between February 2000 and October 2004, 16 patients with hepatobiliary disease underwent single-level dynamic computed tomography during hepatic arteriography (SLD-CTHA) under temporary balloon occlusion of an intrahepatic portal vein. All patients needed percutaneous transhepatic portography for therapy of their disease. SLD-CTHA was undertaken to clarify the time-attenuation curve influenced by portal vein occlusion, and it was performed continuously over a period of 30s. The difference in absolute attenuation of the liver parenchyma in segments with occluded and non-occluded portal vein branches was determined by means of the CT number, and the difference in absolute attenuation of the occluded and non-occluded portal veins themselves was also evaluated. RESULTS SLD-CTHA demonstrated a demarcated hyperattenuation area in the corresponding distribution of the occluded portal vein branch. The attenuation of the liver parenchyma supplied by the occluded portal vein was significantly higher than that in the non-occluded area (p<0.01). The balloon-occluded portal branch enhancement in 15 of 16 cases (94%) appears due to arterio-portal communications. Failure to evaluate a remaining case for portal branch enhancement was due to absence of a visualized portal branch in the section. CONCLUSION Under temporary occlusion of an intrahepatic portal vein, hepatic angiography produced enhancement of the occluded portal branches and their corresponding parenchymal distribution; this finding is considered consistent with the presence of arterio-portal communications.
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Affiliation(s)
- Y Komada
- Department of Radiology, Center for Advanced Medical Technology, Sendagi, Tokyo, Japan.
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Aoki K, Nakazawa S, Takahashi Y, Kanazawa H, Yamazaki Y. [Durability of aortic root preservation using gelatin-resorcin-formalin glue in acute type A aortic dissection]. Kyobu Geka 2007; 60:324-8. [PMID: 17416101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
During the last 9 years, aortic root preservation using gelatin-resorcin-formalin (GRF) glue was performed in 63 patients as a part of surgery for acute type A aortic dissection. Residual aortic regurgitation (AR) was evaluated, grading 0 to IV+ by echocardiography. The survival and root reoperation-free rates were also assessed. The operative mortality was 9.5% (6 patients). Early postoperative AR < or = I+, = II+ and > or =III+ were 93, 7 and 0%, respectively. Late postoperative AR > or =III+ was observed in 4 patients. Root reoperation was performed in 4 patients (7.0%). In a case of reoperation, medial degeneration was found in the aortic wall, suggesting toxic effect of GRF glue. The actuarial survival and root reoperation-free rates at 9 years were 73 and 80%, respectively. In conclusion, aortic root preservation with the proper use of GRF glue has long-term durability with very low adverse effect.
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Affiliation(s)
- Kenji Aoki
- Department of Cardiovascular Surgery, Niigata City Hospital, Niigata, Japan
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Kanazawa H, Urabe Y, Iwamoto H, Shirakawa T. IN VIVO DYNAMICS OF THE INACTIVE HUMAN MUSCLE-TENDON UNIT. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70707-8] [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: 11/30/2022]
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36
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Hayashi N, Watanabe H, Yasukawa H, Uratsuji H, Kanazawa H, Ishimaru M, Kotera N, Akatsuka M, Kawashima M. Comedolytic effect of topically applied active vitamin D3
analogue on pseudocomedones in the rhino mouse. Br J Dermatol 2006; 155:895-901. [PMID: 17034516 DOI: 10.1111/j.1365-2133.2006.07486.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Retinoids and active vitamin D(3) analogues regulate the proliferation and differentiation of keratinocytes and are effective in the treatment of psoriasis. Retinoids are known to be effective against acne vulgaris through comedolysis. However, the comedolytic effect of active vitamin D(3) analogues has not been reported. OBJECTIVES To investigate whether maxacalcitol, one of the active vitamin D(3) analogues, has a comedolytic effect by using spontaneously comedogenic rhino mice. METHODS Rhino mice were treated topically with tretinoin and maxacalcitol once daily for 2 and 4 weeks, respectively. The dermal side of the epidermal sheet was observed to determine the size of the utricle. Haematoxylin and eosin-stained vertical sections were used to measure utricle diameter and density and to evaluate histological changes. RESULTS Maxacalcitol (25 microg g(-1)) and tretinoin (0.1%) significantly decreased the size and the diameter of the utricle after 1 week of treatment. However, maxacalcitol did not affect the density while tretinoin did have an effect. Histopathologically, maxacalcitol and tretinoin markedly induced epidermal hyperplasia accompanied by a minor accumulation of inflammatory cells in the dermis, with and without hypercornification, respectively. CONCLUSIONS These results indicate that maxacalcitol has a prominent effect on comedolysis and that its mechanism of action may be different from that of retinoids.
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Affiliation(s)
- N Hayashi
- Research Laboratories, Kyoto R&D Center, Maruho Co., Ltd, Chudoji, Kyoto 600-8815, Japan.
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Abstract
BACKGROUND Recent attention has been devoted to the respiratory manifestations that may be associated with diseases of distant organs. The most prevalent and distinctive pattern of respiratory involvement in ulcerative colitis (UC) is airway inflammation. OBJECTIVE This study was designed to examine the contribution of airway microvascular permeability to the pathophysiological association of asthma with UC. METHODS Sputum induction and methacholine provocation test were performed in 27 asthmatic patients (15 without UC and 12 with UC), nine patients with UC and 15 normal controls. Inflammatory indexes, vascular endothelial growth factor (VEGF) levels in induced sputum, airway vascular permeability index and exhaled nitric oxide (NO) levels were examined in all subjects. RESULTS The percentage of eosinophils and concentration of eosinophil cationic protein in induced sputum were similar in all four groups. Though exhaled NO levels were significantly higher in asthmatics with or without UC than in normal controls or UC patients, these levels were comparable in asthmatics with and without UC. VEGF levels in induced sputum and airway vascular permeability index were significantly higher in asthmatics without UC (VEGF: 1920 (990) pg/mL; airway vascular permeability index: 0.018 (0.008)) and asthmatics with UC (6570 (1000) pg/mL; 0.040 (0.006)) than in normal controls (950 (700) pg/mL; 0.009 (0.003)), whose levels were comparable to those of UC patients (900 (600) pg/mL; 0.011 (0.003)). In particular, these parameters were markedly increased in asthmatics with UC than in asthmatics without UC. VEGF level was significantly correlated with airway vascular permeability index in asthmatics with UC. Moreover, VEGF level and airway vascular permeability index was inversely correlated with degree of airway obstruction and airway hyper-reactivity to methacholine in these asthmatics. CONCLUSION Airway microvascular hyper-permeability induced by VEGF may have a profound effect on airway function and can explain the heightened airway hyper-responsiveness characteristic of asthma associated with UC.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Osaka, Japan.
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Amano H, Kanazawa H, Nakazawa S, Shiraishi S, Aoki K, Takahashi Y. [Acute myocardial infarction with left ventricular free wall rupture and papillary muscle rupture caused by infectious endocarditis]. Kyobu Geka 2006; 59:193-6. [PMID: 16528990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Infectious endocarditis sometimes causes coronary embolism which induces acute myocardial infarction. A 59-year-old man was admitted to our hospital with a diagnosis of acute myocardial infarction accompanied by left ventricular free wall rupture and papillary muscle rupture. We perfomed mitral valve replacement combined with repair of left ventricular free wall rupture. The anterior mitral leaflet had perforation and vegetation, which suggested that acute myocardial infarction was caused by septic embolus originated from infectious endocarditis in this case.
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Affiliation(s)
- H Amano
- Department of Cardiovascular Surgery, Niigata City General Hospital, Niigata, Japan
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Naoe Y, Arita K, Hashimoto H, Kanazawa H, Sato M, Shimizu T. Structural studies of rat calucineurin B homologous protein 1. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305091725] [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: 11/10/2022] Open
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Affiliation(s)
- S Mitsuoka
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, 1-4-3, Asahi-machi, Abenoku, Osaka 545-8585, Japan
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Matsuura K, Kudoh S, Mitsuoka S, Yoshimura N, Kanazawa H, Hirata K, Yoshikawa J. Evaluating a prognostic factor in advanced adenocarcinoma of the lung who have treated with gefinitib. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.7334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- K. Matsuura
- Osaka city university school of medicine, Osaka, Japan
| | - S. Kudoh
- Osaka city university school of medicine, Osaka, Japan
| | - S. Mitsuoka
- Osaka city university school of medicine, Osaka, Japan
| | - N. Yoshimura
- Osaka city university school of medicine, Osaka, Japan
| | - H. Kanazawa
- Osaka city university school of medicine, Osaka, Japan
| | - K. Hirata
- Osaka city university school of medicine, Osaka, Japan
| | - J. Yoshikawa
- Osaka city university school of medicine, Osaka, Japan
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Abstract
Vascular endothelial growth factor (VEGF) stimulates endothelial cell proliferation, and endostatin directly antagonises the biological effects of VEGF. The maintenance of pulmonary endothelial cells is also thought to depend upon the local balance of VEGF and endostatin in the lung. Therefore, this study was designed to determine whether there is an imbalance between VEGF and endostatin levels in patients with pulmonary emphysema. VEGF and endostatin levels were simultaneously measured from 25 emphysema patients and 12 normal control subjects, and their correlation and balance in induced sputum was evaluated. VEGF levels in induced sputum were significantly lower in emphysema patients (854 +/- 307 pg x mL(-1)) than in normal controls (1,791 +/- 1,192 pg x mL(-1)). In contrast, there was no significant difference in endostatin levels among the two groups. Therefore, the ratio of VEGF to endostatin levels was markedly lower in emphysema patients (4.5 +/- 1.8) than in normal controls (8.1 +/- 2.6). Moreover, VEGF levels were correlated with endostatin levels in normal controls but not in emphysema patients. In addition, the ratio of VEGF to endostatin levels was correlated with forced expiratory volume in one second (FEV1), FEV1/forced vital capacity and carbon monoxide diffusing capacity of the lung in emphysema patients. The findings in this study suggest that there is an imbalance between vascular endothelial growth factor and endostatin levels in induced sputum from emphysema patients.
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Affiliation(s)
- H Kanazawa
- Dept of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Abenoku, Osaka, Japan.
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Kanazawa H, Hirata K, Yoshikawa J. Effects of captopril administration on pulmonary haemodynamics and tissue oxygenation during exercise in ACE gene subtypes in patients with COPD: a preliminary study. Thorax 2003; 58:629-31. [PMID: 12832683 PMCID: PMC1746721 DOI: 10.1136/thorax.58.7.629] [Citation(s) in RCA: 34] [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: 11/03/2022]
Abstract
BACKGROUND We have previously shown that angiotensin converting enzyme (ACE) DD genotype is associated with exaggerated pulmonary hypertension and disturbance of tissue oxygenation during exercise in patients with chronic obstructive pulmonary disease (COPD). A pilot study was designed to examine the effects of captopril on these exercise related variables in COPD patients categorised according to ACE gene polymorphisms. METHODS Thirty six patients with COPD (II=13, ID=11, DD=12) received oral captopril (25 mg) or placebo in a randomised, double blind, crossover manner and underwent right heart catheterisation with exercise. RESULTS Mean pulmonary arterial pressure (mPAP), pulmonary vascular resistance (PVR), and lactate concentration after exercise with both placebo and captopril were higher in patients with the DD genotype than in those with the II or ID genotypes. In contrast, mixed venous oxygen tension (PvO(2)) was lower in patients with the DD genotype than in those with the other genotypes. Moreover, mPAP, PVR, and lactate concentration after exercise were lower in the captopril group than in the placebo group in patients with the II or ID genotype, but not in those with the DD genotype. PvO(2) after exercise was higher with captopril than with placebo in patients with the II genotype, but not in those with the other genotypes. CONCLUSIONS These findings suggest that pulmonary haemodynamic variables and state of tissue oxygenation during exercise are dependent on ACE genotypes, and that captopril administration effectively influences these exercise related variables. Although the sample size in this pilot study was limited, it is likely that the improvement in exercise related variables in COPD patients with the II genotype is relatively sensitive to captopril.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Abenoku, Osaka 545-8585, Japan.
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Asai K, Kanazawa H, Kamoi H, Shiraishi S, Hirata K, Yoshikawa J. Increased levels of vascular endothelial growth factor in induced sputum in asthmatic patients. Clin Exp Allergy 2003; 33:595-9. [PMID: 12752587 DOI: 10.1046/j.1365-2222.2003.01576.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is highly expressed in the airway of asthmatic patients. As VEGF increases airway vascular permeability, consequent thickening of the airway wall mucosa may lead to narrowing of the airway lumen. OBJECTIVE We evaluated the relationship between VEGF levels in induced sputum and eosinophilic inflammatory profiles, and the degree of airway vascular permeability in asthmatic patients and we evaluated the effect of inhaled corticosteroids on VEGF levels in induced sputum. METHODS Induced sputum specimens were obtained from 28 glucocorticosteroids free asthmatics and 11 healthy control subjects. We examined VEGF levels and airway vascular permeability index in induced sputum. After the initial sputum induction, 21 asthmatics received 8-week inhaled beclomethasone dipropionate (BDP, 800 micro g/day) therapy, then sputum induction was repeated. RESULTS The VEGF levels in asthmatics were significantly higher than in healthy control subjects (P < 0.0001). The VEGF levels were negatively correlated with forced expiratory volume of 1 s (FEV1, % predicted, r = - 0.68, P < 0.001), the percentage of eosinophils (r = 0.51, P < 0.01) and ECP levels (r = 0.39, P < 0.05). Moreover, the VEGF levels were significantly correlated with airway vascular permeability index (r = 0.61, P < 0.001). After 8-week inhaled BDP therapy, the VEGF levels were significantly decreased compared to pretreatment levels (P < 0.0001) and the VEGF levels were significantly correlated with airway vascular permeability index even in post-treatment asthmatics (r = 0.62, P < 0.01). CONCLUSION The VEGF levels in induced sputum were increased in asthmatics and its levels were associated with degree of airway narrowing and airway vascular permeability. These findings provide strong evidence that VEGF may play an important role in the pathogenesis of bronchial asthma.
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Affiliation(s)
- K Asai
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Abeno-ku, Osaka, Japan.
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Kanazawa H, Shiraishi S, Hirata K, Yoshikawa J. Imbalance between levels of nitrogen oxides and peroxynitrite inhibitory activity in chronic obstructive pulmonary disease. Thorax 2003; 58:106-9. [PMID: 12554889 PMCID: PMC1746558 DOI: 10.1136/thorax.58.2.106] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The prevalent theory concerning the pathogenesis of chronic obstructive pulmonary disease (COPD) is of an imbalance between oxidants and antioxidants in the lung. It has recently been reported that the production of peroxynitrite, an extremely potent oxidant, is increased in the airways of patients with COPD. A study was undertaken of the imbalance between the levels of nitrogen oxides and antioxidant activity against peroxynitrite in the airways of patients with COPD. METHODS Sputum induction was performed in 30 patients with COPD and 15 normal control subjects. Levels of nitrogen oxides, percentage of neutrophils, and interleukin 8 (IL-8) levels were measured in sputum samples, and peroxynitrite inhibitory activity was assayed by monitoring rhodamine formation. RESULTS Nitrite and nitrate levels in induced sputum were significantly higher in patients with COPD than in normal controls (949 (133) microM v 621 (89) microM, p<0.001). In contrast, peroxynitrite inhibitory activity in induced sputum was significantly lower in patients with COPD than in normal controls (47.4 (12.7)% v 92.9 (3.9)%, p<0.001). There was a negative correlation between nitrite and nitrate levels and peroxynitrite inhibitory activity in induced sputum (r=-0.775, p<0.001). Peroxynitrite inhibitory activity was also significantly correlated with forced expiratory volume in 1 second (FEV(1)) % predicted (r=0.539, p=0.004), FEV(1)/FVC (r=0.512, p=0.006), and carbon monoxide transfer factor (TLCO) (r=0.486, p=0.009). Moreover, there was a significant negative correlation between peroxynitrite inhibitory activity and the degree of neutrophilic inflammation (percentage of neutrophils: r=-0.754, p<0.001; IL-8 levels: r=-0.497, p=0.007). CONCLUSIONS Reduced peroxynitrite inhibitory activity and increased levels of nitrogen oxides are found in induced sputum from patients with COPD. An imbalance in nitrogen oxides and antioxidant defence may contribute to the pathogenesis of COPD.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, Abenoku, Osaka, Japan.
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Tsuchiya K, Katase S, Fujikawa A, Hachiya J, Kanazawa H, Yodo K. Diffusion-weighted MRI of the cervical spinal cord using a single-shot fast spin-echo technique: findings in normal subjects and in myelomalacia. Neuroradiology 2003; 45:90-4. [PMID: 12592491 DOI: 10.1007/s00234-002-0898-4] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2002] [Accepted: 10/08/2002] [Indexed: 10/20/2022]
Abstract
We have implemented a new diffusion-weighted MRI (DWI) sequence based on the single-shot fast spin-echo technique. We hypothesised that this would add information to conventional MRI for diagnosis of lesions of the cervical spinal cord. DWI was performed using a technique in which echo collection after the application of motion-probing gradients was done in the same manner as in the single-shot fast spin-echo technique. We first imaged six healthy volunteers to demonstrate the cervical spinal cord using the sequence. Then we applied the sequence to 12 patients with cervical myelomalacia due to chronic cord compression. The spinal cord was well seen in all subjects without the distortion associated with echo-planar DWI. In the patients, lesions appeared as areas of low- or isointense signal on DWI. Calculated apparent diffusion coefficients of the lesions (3.30+/-0.38x10(-3) mm(2)/s) were significantly higher than those of normal volunteers (2.26+/-0.08x10(-3) mm(2)/s). Increased diffusion in areas of cervical myelomalacia, suggesting irreversible damage, can be detected using this technique.
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Affiliation(s)
- K Tsuchiya
- Department of Radiology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, 181-8611 Tokyo, Japan.
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Abstract
BACKGROUND There is evidence that the bronchial microcirculation has the potential to contribute to the pathophysiological mechanisms of exercise induced bronchoconstriction (EIB) in asthmatic subjects. Vascular endothelial growth factor (VEGF), which is highly expressed in asthmatic airways, increases vascular permeability. The relationship between VEGF levels in induced sputum and the severity of EIB in asthmatic subjects was studied. METHODS The concentration of VEGF in induced sputum was examined in 23 asthmatic subjects and 11 normal controls. The asthmatic subjects performed an exercise test and the % maximal fall in forced expiratory volume in 1 second (FEV(1)) was measured. Beclomethasone dipropionate (BDP) 400 micro g twice daily was administered to the asthmatic subjects for 8 weeks and the exercise test and sputum induction were repeated. RESULTS The concentration of VEGF in induced sputum was significantly higher in asthmatic subjects than in normal controls. There was a significant correlation between the concentration of VEGF and the % maximal fall in FEV(1) (r=0.826, p=0.0001) and between the concentration of VEGF and airway vascular permeability index (r=0.621, p=0.0037). After treatment with inhaled BDP there was a significant decrease in the concentration of VEGF in the asthmatic subjects (before treatment: 7051 (2361) pg/ml, after treatment: 4498 (2135) pg/ml, p<0.0001). The change in the concentration of VEGF was significantly correlated with the change in the % maximal fall in FEV(1) (r=0.463, p=0.031). CONCLUSIONS Excessive production of VEGF in asthmatic airways may contribute to the pathogenesis of EIB via increased airway vascular permeability.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abenoku, Japan.
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Kishino K, Kikuchi A, Kanazawa H, Tachibana T. Intersubband Absorption at? ? 1.2-1.6 ?m in GaN/AlN Multiple Quantum Wells Grown by rf-Plasma Molecular Beam Epitaxy. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/1521-396x(200207)192:1<124::aid-pssa124>3.0.co;2-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
BACKGROUND The production of peroxynitrite, an extremely potent oxidant, is increased in inflammatory lung disease. It is therefore important to measure antioxidant activity against peroxynitrite in epithelial lining fluid to examine the physiological effects of peroxynitrite in the airways of patients with asthma. This study was designed to determine whether peroxynitrite inhibitory activity in induced sputum is correlated with clinical characteristics and airway inflammatory indices in asthmatic patients. METHODS Inflammatory indices were measured in induced sputum from 25 patients with asthma and 12 normal control subjects. Peroxynitrite inhibitory activity was also measured by monitoring rhodamine formation in sputum samples. RESULTS Peroxynitrite inhibitory activity in induced sputum was significantly lower in asthmatic patients (52.4 (24.5)%) than in normal control subjects (92.1 (3.9)%, p<0.0001). Its activity was significantly correlated with forced expiratory volume in 1 second (FEV(1)) % predicted (r=0.774, p<0.0001) and bronchial hyperreactivity to methacholine (r=0.464, p=0.023). There was a significant negative correlation between peroxynitrite inhibitory activity and the degree of eosinophilic airway inflammation (% eosinophils, r=-0.758, p<0.0001; eosinophil cationic protein, r=-0.780, p<0.0001). CONCLUSIONS Decreased peroxynitrite inhibitory activity occurs in induced sputum of asthmatic patients. Since even in patients with stable asthma the airway lining fluid lacks peroxynitrite inhibitory activity, large amounts of peroxynitrite, which are further increased during an acute asthma attack, would not be completely inactivated and asthmatic airways might have markedly increased susceptibility to peroxynitrite induced airway injury.
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Affiliation(s)
- H Kanazawa
- Department of Respiratory Medicine, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abenoku, 545-8585, Japan.
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Namura O, Kanazawa H, Yoshiya K, Nakazawa S, Yamazaki Y. Successful surgical treatment of a ruptured abdominal aortic aneurysm without homologous blood transfusion in a Jehovah's Witness: report of a case. Surg Today 2002; 31:912-4. [PMID: 11759889 DOI: 10.1007/s005950170034] [Citation(s) in RCA: 9] [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: 10/27/2022]
Abstract
We report herein the case of a 47-year-old woman of the Jehovah's Witness faith in whom Y-grafting for a ruptured abdominal aortic aneurysm was successfully performed without a homologous blood transfusion. We used a Cell Saver (Haemonetics, Braintree, MA. USA) red cell salvaging device and an aortic occlusion balloon catheter, and performed gentle and minimal dissection during the operation. Postoperatively. the patient was kept heavily sedated and required hypothermic therapy for only 14h. We treated her severe anemia using conventional drugs, including iron and folic acid, and her hemoglobin increased smoothly. Although her hemoglobin level decreased to 2.8g/dl during the operation, her postoperative course was uneventful.
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Affiliation(s)
- O Namura
- Department of Cardiovascular Surgery, Niigata City General Hospital, Niigata, Japan
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