1
|
Bishop DG, Fernandes NL, Dyer RA, Sumikura H, Okada H, Suga Y, Shen F, Xu Z, Liu Z, Vasco M, George RB, Guasch E. Global issues in obstetric anaesthesia: perspectives from South Africa, Japan, China, Latin America and North America. Int J Obstet Anesth 2023; 54:103648. [PMID: 36930996 DOI: 10.1016/j.ijoa.2023.103648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/12/2023] [Accepted: 02/20/2023] [Indexed: 03/02/2023]
Abstract
South Africa is classified as a low- and middle-income country, with a complex mixture of resource-rich and resource-limited settings. In the major referral hospitals, the necessary skill level exists for the management of complex challenges. However, this contrasts with the frequently-inadequate skill levels of anaesthesia practitioners in resource-limited environments. In Japan, obstetricians administer anaesthesia for 40% of caesarean deliveries and 80% of labour analgesia. Centralisation of delivery facilities is now occurring and it is expected that obstetric anaesthesiologists will be available 24 h a day in centralised facilities in the future. In China, improvements in women's reproductive, maternal, neonatal, child, and adolescent health are critical government policies. Obstetric anaesthesia, especially labour analgesia, has received unprecedented attention. Chinese obstetric anaesthesiologists are passionate about clinical research, focusing on efficacy, safety, and topical issues. The Latin-American region has different landscapes, people, languages, and cultures, and is one of the world's regions with the most inequality. There are large gaps in research, knowledge, and health services, and the World Federation of Societies of Anaesthesiologists is committed to working with governmental and non-governmental organisations to improve patient care and access to safe anaesthesia. Anaesthesia workforce challenges, exacerbated by coronavirus disease 2019, beset North American healthcare. Pre-existing struggles by governments and decision-makers to improve health care access remain, partly due to unfamiliarity with the role of the anaesthesiologist. In addition to weaknesses in work environments and dated standards of work culture, the work-life balance demanded by new generations of anaesthesiologists must be acknowledged.
Collapse
Affiliation(s)
- D G Bishop
- Perioperative Research Group, Department of Anaesthetics, Critical Care and Pain Management, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - N L Fernandes
- Department of Anaesthesia and Perioperative Medicine, Groote Schuur Hospital, Faculty of Health Sciences, University of Cape Town, South Africa
| | - R A Dyer
- Department of Anaesthesia and Perioperative Medicine, Groote Schuur Hospital, Faculty of Health Sciences, University of Cape Town, South Africa
| | - H Sumikura
- Department of Anesthesiology and Pain Medicine, Juntendo University, Japan
| | - H Okada
- Department of Anesthesiology and Pain Medicine, Juntendo University, Japan
| | - Y Suga
- Department of Anesthesiology and Pain Medicine, Juntendo University, Japan
| | - F Shen
- Department of Anaesthesiology, Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai Institute of Maternal-Fetal Medicine and Gynaecologic Oncology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Z Xu
- Department of Anaesthesiology, Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai Institute of Maternal-Fetal Medicine and Gynaecologic Oncology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Z Liu
- Department of Anaesthesiology, Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai Institute of Maternal-Fetal Medicine and Gynaecologic Oncology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - M Vasco
- Director of Clinical Simulation, Universidad CES, Medellín, Colombia
| | - R B George
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
| | - E Guasch
- Division Chief Obstetric Anaesthesia, Hospital Universitario La Paz, Madrid, Spain.
| |
Collapse
|
2
|
Takeuchi S, Takeichi T, Koike Y, Takama H, Tanahashi K, Okuno Y, Ishii N, Muro Y, Ogi T, Suga Y, Akiyama M. Mutations in SAM syndrome and palmoplantar keratoderma patients suggest genotype/phenotype correlations in DSG1 mutations. J Eur Acad Dermatol Venereol 2021; 36:e215-e218. [PMID: 34657339 DOI: 10.1111/jdv.17752] [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] [Received: 07/17/2021] [Revised: 09/21/2021] [Accepted: 10/13/2021] [Indexed: 11/28/2022]
Affiliation(s)
- S Takeuchi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Koike
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Takama
- Department of Dermatology, Aichi Medical University, Nagakute, Japan
| | - K Tanahashi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Okuno
- Medical Genomics Center, Nagoya University Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Virology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - Y Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Ogi
- Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Y Suga
- Department of Dermatology, Juntendo University Urayasu Hospital, Urayasu, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
3
|
Toba-Ichihashi Y, Yoshino T, Suzuki T, Sakurai T, Suga Y, Tominaga M, Takamori K. 329 In vitro co-culture models of merkel cell-neurite complex in touch domes. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.337] [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: 11/25/2022]
|
4
|
Yoshikawa T, Takeichi T, Suga Y, Kitajima Y, Akiyama M. Unique reticular hyperkeratotic eruptions seen in a patient with Darier's disease and attention deficit hyperactivity disorder. J Eur Acad Dermatol Venereol 2019; 34:e41-e43. [PMID: 31430409 DOI: 10.1111/jdv.15892] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T Yoshikawa
- Departments of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Departments of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suga
- Department of Dermatology, Juntendo University Urayasu Hospital, Urayasu, Japan
| | - Y Kitajima
- Department of Dermatology, Kizawa Memorial Hospital, Minokamo, Japan
| | - M Akiyama
- Departments of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
5
|
Tamura S, Suga Y, Tanamura M, Murata-Kawakami M, Takagi Y, Hottori Y, Kakihara M, Suzuki S, Takagi A, Kojima T. Optimisation of antithrombin resistance assay as a practical clinical laboratory test: Development of prothrombin activator using factors Xa/Va and automation of assay. Int J Lab Hematol 2018; 40:312-319. [PMID: 29436777 DOI: 10.1111/ijlh.12786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/11/2018] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Antithrombin resistance (ATR) is a novel thrombotic risk in abnormal prothrombins. A manual ATR assay using Oxyuranus scutellatus (Ox) venom as a prothrombin activator was established for detecting antithrombin-resistant prothrombin. However, this assay was limited because of Ox snake venom availability and its throughput capacity. Here, we have improved the ATR assay using bovine factors Xa and Va (FXa/Va) as prothrombin activators and have optimised assay conditions for an automated instrument (ACL TOP 500). METHODS Diluted plasma was incubated with a prothrombin activator mix (phospholipids, CaCl2 , and bovine FXa/Va), followed by inactivation with antithrombin for 10, 20 and 30 minutes. We added a chromogenic substrate S-2238, and assessed changes in absorbance/min at 405 nm. We also adapted assay conditions for ACL TOP 500. RESULTS Optimum conditions for FXa/Va treatment were 6.25% phospholipids, 5 mM CaCL2 , 0.01 μg/mL FXa and 0.1 μg/mL FVa. ATR assay kinetics with the FXa/Va activator was comparable with that with the Ox activator in heterozygous reconstituted plasma with the recombinant wild-type or antithrombin-resistant prothrombin. Using ACL TOP 500, optimum conditions for the FXa/Va treatment were 10.0% phospholipids, 5 mM CaCl2 , 0.02 μg/mL FXa and 0.2 μg/mL FVa. The automated ATR assay with the FXa/Va activator demonstrated good detectability for antithrombin-resistant prothrombin in plasma from a heterozygous carrier with prothrombin Yukuhashi or Belgrade. CONCLUSION We optimised the ATR assay with the FXa/Va activator and adapted the assay for ACL TOP 500; the assay showed the ability to clearly detect antithrombin-resistant prothrombin in manual and automated procedures.
Collapse
Affiliation(s)
- S Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suga
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Tanamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Murata-Kawakami
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Y Hottori
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Kakihara
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Suzuki
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
6
|
Hashimoto T, Teye K, Numata S, Suga Y, Hamada T, Ishii N. Detection of SERPINB7 mutation can distinguish Nagashima-type palmoplantar keratoderma from other keratodermas with palmoplantar lesions. Clin Exp Dermatol 2017; 42:342-345. [PMID: 28211129 DOI: 10.1111/ced.13059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2016] [Indexed: 11/30/2022]
Affiliation(s)
- T Hashimoto
- Kurume University Institute of Cutaneous Cell Biology, 67 Asahimachi, Kurume, Fukuoka, 830-0011, Japan
| | - K Teye
- Kurume University Institute of Cutaneous Cell Biology, 67 Asahimachi, Kurume, Fukuoka, 830-0011, Japan
| | - S Numata
- Kurume University Institute of Cutaneous Cell Biology, 67 Asahimachi, Kurume, Fukuoka, 830-0011, Japan
| | - Y Suga
- Department of Dermatology and Allergology, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan
| | - T Hamada
- Department of Dermatology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| |
Collapse
|
7
|
Kumarasamy H, Veerakumar AM, Subhathra S, Suga Y, Murugaraj R. Determinants of Awareness and Practice of Breast Self Examination Among Rural Women in Trichy, Tamil Nadu. J Midlife Health 2017; 8:84-88. [PMID: 28706409 PMCID: PMC5496285 DOI: 10.4103/jmh.jmh_79_16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction: Breast cancer is the most common cancer among women worldwide, and it can be detected at an early stage through self-examination which increases the chance of survival. This study aimed to assess knowledge and practice of breast self-examination (BSE) among females in a rural area of Trichy district. Methodology: This community-based, cross-sectional study was carried out among a total sample of 200 women in rural area of Trichy. The participants were interviewed using a structured interviewer-administered questionnaire to obtain information on their sociodemographic characteristics, awareness on breast cancer, and knowledge, attitude, practice of BSE. Data were entered into MS Excel and analyzed using SPSS version 20.0. Spearman correlation and Chi-square test were used to analyze the association between the variables. Results: The mean age of the study group was 36.9 ± 8.8 years. Eighty percent were literates. Most of the women 178 (89%) were aware of breast cancer. Only 26% of the women were aware of BSE. Only 18% of the females had ever checked their breast and 5% practiced it regularly. Awareness of BSE was found to be significantly associated with age and educational attainment. Conclusion: The level of knowledge and practice of BSE among females are unacceptably low. Efforts should be made to increase level of knowledge and practice of BSE through health education programs.
Collapse
Affiliation(s)
- Hemalatha Kumarasamy
- Department of Community Medicine, Chennai Medical College Hospital and Research Centre, Trichy, Tamil Nadu, India
| | - A M Veerakumar
- Department of Community Medicine, Chennai Medical College Hospital and Research Centre, Trichy, Tamil Nadu, India
| | - S Subhathra
- Department of Community Medicine, Chennai Medical College Hospital and Research Centre, Trichy, Tamil Nadu, India
| | - Y Suga
- Department of Community Medicine, Chennai Medical College Hospital and Research Centre, Trichy, Tamil Nadu, India
| | - R Murugaraj
- Department of Community Medicine, Chennai Medical College Hospital and Research Centre, Trichy, Tamil Nadu, India
| |
Collapse
|
8
|
Irie R, Suzuki M, Yamamoto M, Takano N, Suga Y, Hori M, Kamagata K, Takayama M, Yoshida M, Sato S, Hamasaki N, Oishi H, Aoki S. Assessing Blood Flow in an Intracranial Stent: A Feasibility Study of MR Angiography Using a Silent Scan after Stent-Assisted Coil Embolization for Anterior Circulation Aneurysms. AJNR Am J Neuroradiol 2014; 36:967-70. [PMID: 25523588 DOI: 10.3174/ajnr.a4199] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 10/29/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Blood flow in an intracranial stent cannot be visualized with 3D time-of-flight MR angiography owing to magnetic susceptibility and radiofrequency shielding. As a novel follow-up tool after stent-assisted coil embolization, we applied MRA by using a Silent Scan algorithm that contains an ultrashort TE combined with an arterial spin-labeling technique (Silent MRA). The purpose of this study was to determine whether Silent MRA could visualize flow in an intracranial stent placed in the anterior circulation. MATERIALS AND METHODS Nine patients treated with stent-assisted coil embolization for anterior circulation aneurysms underwent MRAs (Silent MRA and TOF MRA) and x-ray digital subtraction angiography. MRAs were performed in the same session on a 3T unit. Two neuroradiologists independently reviewed the MRA images and subjectively scored flow in a stent as 1 (not visible) to 4 (excellent) by referring to the latest x-ray digital subtraction angiography image as a criterion standard. RESULTS Both observers gave MRA higher scores than TOF MRA for flow in a stent in all cases. The mean score for Silent MRA was 3.44 ± 0.53, and for TOF MRA, it was 1.44 ± 0.46 (P < .001). CONCLUSIONS Silent MRA was able to visualize flow in an intracranial stent more effectively than TOF MRA. Silent MRA might be useful for follow-up imaging after stent-assisted coil embolization, though these study results may be only preliminary due to some limitations.
Collapse
Affiliation(s)
- R Irie
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - M Suzuki
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - M Yamamoto
- Neurosurgery (M. Yamamoto, Y.S., H.O.), Juntendo University Hospital, Tokyo, Japan
| | - N Takano
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - Y Suga
- Neurosurgery (M. Yamamoto, Y.S., H.O.), Juntendo University Hospital, Tokyo, Japan
| | - M Hori
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - K Kamagata
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - M Takayama
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - M Yoshida
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - S Sato
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - N Hamasaki
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| | - H Oishi
- Neurosurgery (M. Yamamoto, Y.S., H.O.), Juntendo University Hospital, Tokyo, Japan Department of Neuroendovascular Therapy (H.O.), Juntendo University School of Medicine, Tokyo, Japan
| | - S Aoki
- From the Departments of Radiology (R.I., M.S., N.T., M.H., K.K., M.T., M. Yoshida, S.S., N.H., S.A.)
| |
Collapse
|
9
|
Sugiura K, Haruna K, Suga Y, Akiyama M. Generalized pustular psoriasis caused by deficiency of interleukin-36 receptor antagonist successfully treated with granulocyte and monocyte adsorption apheresis. J Eur Acad Dermatol Venereol 2014; 28:1835-6. [DOI: 10.1111/jdv.12383] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Sugiura
- Department of Dermatology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - K. Haruna
- Department of Dermatology; Juntendo University Urayasu Hospital; Urayasu Japan
| | - Y. Suga
- Department of Dermatology; Juntendo University Urayasu Hospital; Urayasu Japan
| | - M. Akiyama
- Department of Dermatology; Nagoya University Graduate School of Medicine; Nagoya Japan
| |
Collapse
|
10
|
Shimodera S, Kawamura A, Fujita H, Iwagawa C, Akamatsu M, Suga Y, Doi E, Fuji M, Gibo N, Kakeda K, Kamimura N, Furukawa T, Morinobu S. EPA-1764 – Effect of depression-related somatic pain on treatment satisfaction and daily living functions. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78893-5] [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: 12/01/2022] Open
|
11
|
Hara S, Hosoi K, Suga Y, Takata T, Degami H, Kinoshita Y, Min K, Katsuyama S, Takayama O, Murata M. A Pleomorphic Carcinoma of the Lung with Small Intestinal Metastasis Producing Multiple Cytokines. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
12
|
Shimodera S, Kawamura A, Fujita H, Suga Y, Kamimura N, Inoue S, Furukawa T. P-529 - Physical pain and depression: a survey in japanese patients and physicians. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74696-5] [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: 11/28/2022] Open
|
13
|
Umemoto H, Akiyama M, Yanagi T, Sakai K, Aoyama Y, Oizumi A, Suga Y, Kitagawa Y, Shimizu H. New insight into genotype/phenotype correlations in ABCA12 mutations in harlequin ichthyosis. J Dermatol Sci 2011; 61:136-9. [DOI: 10.1016/j.jdermsci.2010.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Accepted: 11/24/2010] [Indexed: 11/25/2022]
|
14
|
Rafai M, Boulaajaj F, Seito A, Suga Y, Slassi I, Fadel H. Syndrome de Sjögren-Larsson en rapport avec une nouvelle mutation chez un enfant marocain. Arch Pediatr 2008; 15:1648-51. [DOI: 10.1016/j.arcped.2008.07.022] [Citation(s) in RCA: 5] [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] [Received: 05/22/2007] [Revised: 05/25/2008] [Accepted: 07/31/2008] [Indexed: 11/16/2022]
|
15
|
Maeda J, Hirano T, Ogiwara A, Akimoto S, Kawakami T, Fukui Y, Oka T, Gong Y, Guo R, Inada H, Nawa K, Kojika M, Suga Y, Ohira T, Mukai K, Kato H. Erratum: Proteomic analysis of stage I primary lung adenocarcinoma aimed at individualization of postoperative therapy. Br J Cancer 2008. [PMCID: PMC2441957 DOI: 10.1038/sj.bjc.6604414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
16
|
Suga Y, Ogasawara K, Saito H. Preoperative cerebral hemodynamic impairment and reactive oxygen species produced during carotid endarterectomy correlate with development of postoperative cerebral hyperperfusion. J Vasc Surg 2008. [DOI: 10.1016/j.jvs.2008.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
17
|
Maeda J, Hirano T, Ogiwara A, Akimoto S, Kawakami T, Fukui Y, Oka T, Gong Y, Guo R, Inada H, Nawa K, Kojika M, Suga Y, Ohira T, Mukai K, Kato H. Proteomic analysis of stage I primary lung adenocarcinoma aimed at individualisation of postoperative therapy. Br J Cancer 2008; 98:596-603. [PMID: 18212748 PMCID: PMC2243141 DOI: 10.1038/sj.bjc.6604197] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Although postoperative adjuvant chemotherapy (PAC) with uracil–tegafur significantly improves the prognosis of patients with stage I lung adenocarcinoma, subset analysis has revealed that only 11.5% of patients with stage IB derive actual benefit from such therapy. Therefore, it is extremely important to identify patients for whom adjuvant chemotherapy will be beneficial. We performed comprehensive protein analysis of 24 surgically resected specimens of stage I adenocarcinoma using liquid chromatography-tandem mass spectrometry (LC-MS/MS), followed by bioinformatical investigations to identify protein molecules. Furthermore, we carried out immunohistochemical studies of 90 adenocarcinoma specimens to validate the results of LC-MS/MS. We detected two kinds of protein molecules (myosin IIA and vimentin) by LC-MS/MS. We confirmed their immunohistochemical expression and distribution, and evaluated the relationship between the expression of these proteins and prognosis after adjuvant chemotherapy. Patients with no expression of either myosin IIA or vimentin showed a significantly better outcome regardless of PAC using uracil–tegafur. However, we were unable to select responders to uracil–tegafur using these proteins. Cases of adenocarcinoma lacking expression of either myosin IIA or vimentin show a good outcome without PAC, and therefore do not require such treatment.
Collapse
Affiliation(s)
- J Maeda
- Department of Surgery, Tokyo Medical University, 6-7-1 Nishi-shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Usuda J, Ohira T, Suga Y, Oikawa T, Ichinose S, Inoue T, Ohtani K, Maehara S, Imai K, Kubota M, Tsunoda Y, Tsutsui H, Furukawa K, Okunaka T, Sugimoto Y, Kato H. Breast cancer resistance protein (BCRP) affected acquired resistance to gefitinib in a "never-smoked" female patient with advanced non-small cell lung cancer. Lung Cancer 2007; 58:296-9. [PMID: 17618705 DOI: 10.1016/j.lungcan.2007.05.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2007] [Revised: 05/05/2007] [Accepted: 05/17/2007] [Indexed: 01/29/2023]
Abstract
Development of acquired resistance to gefitinib after an initial good response is common. Recently, it was reported that this acquired resistance is related to a secondary mutation associated with a substitution of threonine by methionine at codon 790 (T790M) of the epidermal growth factor receptor (EGFR) gene. In this report, we present a "never smoking" woman with advanced lung cancer who showed acquired resistance to gefitinib, and analysis of autopsy samples revealed no evidence of EGFR mutations in either exons 18-21 or codon 790, and positive immunostaining for breast cancer resistance protein (BCRP). We describe, for the first time, a case in which expression of BCRP was associated with acquired resistance to gefitinib, independent of EGFR mutations.
Collapse
Affiliation(s)
- J Usuda
- Department of Thoracic Surgery, Tokyo Medical University Hospital, Tokyo 160-0023, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Kato H, Usuda J, Okunaka T, Furukawa K, Honda H, Sakaniwa N, Suga Y, Hirata T, Ohtani K, Inoue T, Maehara S, Kubota M, Yamada K, Tsuitsui H. Basic and clinical research on photodynamic therapy at Tokyo Medical University Hospital. Lasers Surg Med 2007; 38:371-5. [PMID: 16788919 DOI: 10.1002/lsm.20346] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND OBJECTIVES We have been engaged in basic and clinical research on photodynamic therapy (PDT) and photodynamic diagnosis (PDD) for more than 25 years. STUDY DESIGN/MATERIALS AND METHODS PDT for 264 centrally located early-stage lung cancer lesions yielded an initial complete response (CR) rate of 84.8%. PDT is now becoming a standard option for centrally located stage 0 (TisN0M0) and stage I (T1N0M0) lung cancer. It is an attractive option for elderly patients in poor physical condition. RESULTS Recent results of interstitial PDT for peripheral-type lung cancers suggest that it may be a promising local curative treatment modality for lesions less than 1.0 cm in diameter. CONCLUSIONS In this article, we introduce our recent clinical trials of PDT for lung cancers (both central and peripheral), and new techniques of PDD in sentinel node navigation biopsy for breast cancers. Moreover, we introduce basic research on cancers and infectious diseases in order to expand the clinical applications of PDT.
Collapse
Affiliation(s)
- H Kato
- Department of Thoracic Surgery, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Mizuno Y, Suga Y, Haruna K, Muramatsu S, Hasegawa T, Kohroh K, Shimizu T, Komatsu N, Ogawa H, Ikeda S. A case of a Japanese neonate with congenital ichthyosiform erythroderma diagnosed as Netherton syndrome. Clin Exp Dermatol 2006; 31:677-80. [PMID: 16901309 DOI: 10.1111/j.1365-2230.2006.02207.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We report a 6-day-old Japanese girl showing generalized erythroderma accompanied by yellowish, exfoliative scaling that was accentuated on the face and scalp. Histological analysis showed psoriasiform dermatitis with acanthotic epidermis and premature shedding of the stratum corneum. Measurement of trypsin-like hydrolytic activity in SC showed six-fold greater activity compared with age-matched controls. DNA analysis revealed two mutations, 375delAT and 966insC, in exons 5 and 11, respectively, of the SPINK5 gene. Although at 4 weeks the child was still too young to display characteristic hair abnormalities or atopic diathesis, we diagnosed Netherton syndrome based on enzyme assay and DNA analysis.
Collapse
Affiliation(s)
- Y Mizuno
- Department of Dermatology, Juntendo University School of Medicine, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Usuda J, Kato H, Okunaka T, Furukawa K, Honda H, Suga Y, Hirata T, Ohira T, Tsuboi M, Hirano T. Photodynamic therapy using Laserphyrin for centrally located early stage lung cancer. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7229] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7229 Background: In central type early stage lung cancer, the tumor must be located only as far as the segmental bronchi and be carcinoma in situ or with only limited invasion into the bronchial wall. Laserphyrin (mono-L-aspartyl chlorine e6, NPe6) is a second generation photosensitize and approved by the Japanese government and has been on sale from June 2004. Methods: Four h after the administration of Laserphyrin 40 mg/m2, we irradiated using diode laser (100 mJ/cm2). Before PDT, we evaluated the tumor lesions and tumor depth using autofluorescence bronchoscopy and endobronchial ultrasonography (EBUS), and we confirmed the area of laser irradiation. Results: From February 1980 to December 2005, a total number of 204 patients with 264 lesions of centrally located early stage lung cancer underwent photodynamic therapy (PDT) in the Department of Thoracic Surgery, Tokyo Medical University Hospital. There were 185 clinical stage 0 lesions and 79 stage I lesions. CRs and PRs were obtained in 224 lesions (84.8%) and 40 lesions (15.2%) out of 264 lesions. From July 2004 to December 2005, we performed Laserphyrin-PDT for 28 lesions of centrally located early stage lung cancer in Tokyo Medical University Hospital. The rate of CR was 92.9% (26 lesions) in 28 lesions. For Laserphyrin-PDT, Skin photosensitivity was very low and the clean-up bronchoscopies were not frequently needed, and the period of hospitalization was shorter compared to that for Photofrin-PDT. Conclusions: We conclude that PDT using Laserphyrin will be a standard option for stage 0 (TisN0M0) and stage I (T1N0M0) centrally located early stage lung cancer. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- J. Usuda
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - H. Kato
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - T. Okunaka
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - K. Furukawa
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - H. Honda
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - Y. Suga
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - T. Hirata
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - T. Ohira
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - M. Tsuboi
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| | - T. Hirano
- Tokyo Medical University, Tokyo, Japan; International University of Health and Welfare, Tokyo, Japan
| |
Collapse
|
22
|
Mizuno Y, Suga Y, Muramatsu S, Hasegawa T, Shimizu T, Ogawa H. A Japanese infant with localized ichthyosis linearis circumflexa on the palms and soles harbouring a compound heterozygous mutation in the SPINK5 gene. Br J Dermatol 2005; 153:661-3. [PMID: 16120162 DOI: 10.1111/j.1365-2133.2005.06770.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [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: 11/28/2022]
Abstract
We report a 6-month-old Japanese boy showing ichthyosis linearis circumflexa localized on the palms and soles. He showed bamboo hairs and aminoaciduria, and was positive for cow's milk and egg IgE antibodies by radioallergosorbent tests. Trypsin-like hydrolytic activity in the patient's lesional stratum corneum showed an activity seven times higher than that in age-matched controls. DNA analysis showed that the patient harboured the compound heterozygous mutations R790X and 1220+1 G-->C in the SPINK5 gene, compatible with the diagnosis of Netherton syndrome (NS). As the genotype/phenotype correlations in NS have not yet been fully clarified, the position of the premature termination codon in the SPINK5 gene may contribute to explain such a mild form of NS in our patient.
Collapse
Affiliation(s)
- Y Mizuno
- Department of Dermatology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
23
|
Hirano T, Ohira T, Suga Y, Maeda J, Kato Y, Hayashi A, Kajiwara N, Tsuboi M, Ikeda N, Kato H. P-247 Quantitative proteomic exploration of biomarkers for early detection of adenocarcinoma of the lung. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80741-x] [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: 11/29/2022]
|
24
|
Muramatsu S, Suga Y, Mizuno Y, Hasegawa T, Tsuchihashi H, Matsuba S, Kohroh K, Yaguchi H, Ogawa H. A novel threonine to proline mutation in the helix termination motif of keratin 1 in epidermolytic hyperkeratosis with severe palmoplantar hyperkeratosis and contractures of the digits. Br J Dermatol 2005; 152:1087-9. [PMID: 15888189 DOI: 10.1111/j.1365-2133.2005.06584.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
Muramatsu S, Suga Y, Mizuno Y, Haseegawa T, Komuro Y, Kubo Y, Imakado S, Ogawa H. A Japanese case of naevoid basal cell carcinoma syndrome associated with segmental vitiligo. Br J Dermatol 2005; 152:812-4. [PMID: 15840128 DOI: 10.1111/j.1365-2133.2005.06504.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
26
|
Ahn MH, Aoki S, Ashie Y, Bhang H, Boyd S, Casper D, Choi JH, Fukuda S, Fukuda Y, Gran R, Hara T, Hasegawa M, Hasegawa T, Hayashi K, Hayato Y, Hill J, Ichikawa AK, Ikeda A, Inagaki T, Ishida T, Ishii T, Ishitsuka M, Itow Y, Iwashita T, Jang HI, Jang JS, Jeon EJ, Joo KK, Jung CK, Kajita T, Kameda J, Kaneyuki K, Kato I, Kearns E, Kibayashi A, Kielczewska D, Kim BJ, Kim CO, Kim JY, Kim SB, Kobayashi K, Kobayashi T, Koshio Y, Kropp WR, Learned JG, Lim SH, Lim IT, Maesaka H, Maruyama T, Matsuno S, Mauger C, Mcgrew C, Minamino A, Mine S, Miura M, Miyano K, Morita T, Moriyama S, Nakahata M, Nakamura K, Nakano I, Nakata F, Nakaya T, Nakayama S, Namba T, Nambu R, Nishikawa K, Nishiyama S, Noda S, Obayashi Y, Okada A, Oyama Y, Pac MY, Park H, Saji C, Sakuda M, Sarrat A, Sasaki T, Sasao N, Scholberg K, Sekiguchi M, Sharkey E, Shiozawa M, Shiraishi KK, Smy M, Sobel HW, Stone JL, Suga Y, Sulak LR, Suzuki A, Suzuki Y, Takeuchi Y, Tamura N, Tanaka M, Totsuka Y, Ueda S, Vagins MR, Walter CW, Wang W, Wilkes RJ, Yamada S, Yamamoto S, Yanagisawa C, Yokoyama H, Yoo J, Yoshida M, Zalipska J. Search for electron neutrino appearance in a 250 km long-baseline experiment. Phys Rev Lett 2004; 93:051801. [PMID: 15323684 DOI: 10.1103/physrevlett.93.051801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2004] [Indexed: 05/24/2023]
Abstract
We present a search for electron neutrino appearance from accelerator-produced muon neutrinos in the K2K long-baseline neutrino experiment. One candidate event is found in the data corresponding to an exposure of 4.8 x 10(19) protons on target. The expected background in the absence of neutrino oscillations is estimated to be 2.4+/-0.6 events and is dominated by misidentification of events from neutral current pi(0) production. We exclude the nu(micro) to nu(e) oscillations at 90% C.L. for the effective mixing angle in the 2-flavor approximation of sin((2)2theta(microe)( approximately 1/2sin((2)2theta(13))>0.15 at Deltam(2)(microe)=2.8 x 10(-3) eV(2), the best-fit value of the nu(micro) disappearance analysis in K2K. The most stringent limit of sin((2)2theta(microe)<0.09 is obtained at Deltam(2)(microe)=6 x 10(-3) eV(2).
Collapse
Affiliation(s)
- M H Ahn
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Muramatsu S, Suga Y, Kon J, Matsuba S, Hashimoto Y, Ogawa H. A Japanese patient with a mild form of lamellar ichthyosis harbouring two missense mutations in the core domain of the transglutaminase 1 gene. Br J Dermatol 2004; 150:390-2. [PMID: 14996130 DOI: 10.1111/j.1365-2133.2003.05803.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Hashimoto Y, Suga Y, Chikenji T, Matsuba S, Mizoguchi M, Kakuta M, Ogawa H. Immunohistological characterization of a Japanese case of pityriasis rotunda. Br J Dermatol 2003; 149:196-8. [PMID: 12890220 DOI: 10.1046/j.1365-2133.2003.05400.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
29
|
Ahn MH, Aoki S, Bhang H, Boyd S, Casper D, Choi JH, Fukuda S, Fukuda Y, Gajewski W, Hara T, Hasegawa M, Hasegawa T, Hayato Y, Hill J, Ichikawa AK, Ikeda A, Inagaki T, Ishida T, Ishii T, Ishitsuka M, Itow Y, Iwashita T, Jang HI, Jang JS, Jeon EJ, Jung CK, Kajita T, Kameda J, Kaneyuki K, Kato I, Kearns E, Kibayashi A, Kielczewska D, Kobayashi K, Kim BJ, Kim CO, Kim JY, Kim SB, Kobayashi T, Kohama M, Koshio Y, Kropp WR, Learned JG, Lim SH, Lim IT, Maesaka H, Martens K, Maruyama T, Matsuno S, Mauger C, McGrew C, Mine S, Miura M, Miyano K, Moriyama S, Nakahata M, Nakamura K, Nakano I, Nakata F, Nakaya T, Nakayama S, Namba T, Nishikawa K, Nishiyama S, Noda S, Obayashi A, Okada A, Ooyabu T, Oyama Y, Pac MY, Park H, Sakuda M, Sakurai N, Sasao N, Scholberg K, Sharkey E, Shiozawa M, So H, Sobel HW, Stachyra A, Stone JL, Suga Y, Sulak LR, Suzuki A, Suzuki Y, Takeuchi Y, Tamura N, Toshito T, Totsuka Y, Vagins MR, Walter CW, Wilkes RJ, Yamada S, Yamamoto S, Yanagisawa C, Yokoyama H, Yoo J, Yoshida M, Zalipska J. Indications of neutrino oscillation in a 250 km long-baseline experiment. Phys Rev Lett 2003; 90:041801. [PMID: 12570410 DOI: 10.1103/physrevlett.90.041801] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2002] [Indexed: 05/24/2023]
Abstract
The K2K experiment observes indications of neutrino oscillation: a reduction of nu(mu) flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino production point, with an expectation of 80.1(+6.2)(-5.4). Twenty-nine one ring mu-like events are used to reconstruct the neutrino energy spectrum, which is better matched to the expected spectrum with neutrino oscillation than without. The probability that the observed flux at SK is explained by statistical fluctuation without neutrino oscillation is less than 1%.
Collapse
Affiliation(s)
- M H Ahn
- Department of Physics, Seoul National University, Seoul 151-742, Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Asakura H, Ichino T, Yoshida T, Suga Y, Ontachi Y, Mizutani T, Kato M, Ito T, Yamazaki M, Aoshima K, Morishita E, Saito M, Miyamoto KI, Nakao S. Beneficial effect of JTV-803, a new synthetic inhibitor of activated factor X, against both lipopolysaccharide-induced and tissue factor-induced disseminated intravascular coagulation in rat models. Blood Coagul Fibrinolysis 2002; 13:233-9. [PMID: 11943937 DOI: 10.1097/00001721-200204000-00009] [Citation(s) in RCA: 5] [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] [Indexed: 11/26/2022]
Abstract
We examined whether JTV-803, a specific activated factor X inhibitor independent of antithrombin III (ATIII), is effective against disseminated intravascular coagulation (DIC) in rat models induced by tissue factor (TF) or lipopolysaccharides (LPS). In male Wistar rats, DIC was induced by a 4 h infusion of thromboplastin (3.75 U/kg) or LPS (50 mg/kg). The rats were given JTV-803 (0.3 or 3 mg/kg, bolus intravenously) (JTV-803 groups) or low molecular weight heparin (LMWH groups) (200 U/kg, bolus intravenously) prior to an injection of TF or LPS. The results showed that JTV-803 was dose-dependently effective against DIC in both TF-induced and LPS-induced rat models. This anti-DIC effect of JTV-803 at higher doses was almost equivalent to that of LMWH in both types of DIC. Plasma ATIII activity was more prominent in the group treated with JTV-803 than in that treated with LMWH. None of rats died in the TF-induced DIC model with or without drug administration. On the contrary, seven of 22 rats died (mortality rate, 31.8%) in the LPS-induced DIC model without drug administration. Although the mortality rate of rats induced with LPS and treated with LMWH was quite high (6/16, 37.5%), none of the LPS-induced rats treated with JTV-803 died. These findings suggested that JTV-803 can treat both TF-induced and LPS-induced DIC models, and that this drug has greater potential in preserving ATIII and in improving the prognosis of DIC.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine (III), Kanazawa University School of Medicine, Kanazawa, Ishikawa, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Abstract
We report a Japanese case of dominant dystrophic epidermolysis bullosa with a de novo mutation in the triple-helical domain of the type VII collagen. Mutation detection revealed a glycine --> aspartic acid substitution at amino acid position 2012 in exon 73 (G2012D). This previously unreported mutation underlies a clinical phenotype of moderately severe, localized skin blistering.
Collapse
Affiliation(s)
- S Matsuba
- Department of Dermatology, Juntendo University School of Medicine, Tokyo Japan.
| | | | | | | | | |
Collapse
|
32
|
Arimura T, Ide S, Suga Y, Nishioka T, Murata S, Tachiya M, Nagamura T, Inoue H. Electron transfer through-space or through-bonds? A novel system that permits a direct evaluation. J Am Chem Soc 2001; 123:10744-5. [PMID: 11674010 DOI: 10.1021/ja010711c] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- T Arimura
- Photoreaction Control Research Center, AIST Tsukuba Central 5, Tsukuba 305-8565, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Hashimoto Y, Suga Y, Matsuba S, Mizoguchi M, Takamori K, Seitz J, Ogawa H. Inquiry into the role of skin sulfhydryl oxidase in epidermal disulfide bond formation: implications of the localization and regulation of skin SOx as revealed by TPA, retinoic acid, and UVB radiation. J Invest Dermatol 2001; 117:752-4. [PMID: 11564189 DOI: 10.1046/j.0022-202x.2001.01488.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
34
|
Asakura H, Ontachi Y, Mizutani T, Kato M, Ito T, Saito M, Morishita E, Yamazaki M, Aoshima K, Takami A, Yoshida T, Suga Y, Miyamoto K, Nakao S. Decreased plasma activity of antithrombin or protein C is not due to consumption coagulopathy in septic patients with disseminated intravascular coagulation. Eur J Haematol 2001; 67:170-5. [PMID: 11737250 DOI: 10.1034/j.1600-0609.2001.5790508.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We investigated whether depressed plasma antithrombin and protein C activity, considered as a specific finding of disseminated intravascular coagulation (DIC), is due to consumption coagulopathy in septic patients with DIC. An analysis of hemostatic parameters was performed in 139 septic patients (68 with DIC and 71 without DIC). Plasma activity of antithrombin and protein C tended to be significantly decreased in septic patients with DIC but not in those without DIC (p < 0.001). However, when the septic patients were classified into three groups according to the albumin (or choline esterase) level, no significant differences in antithrombin activity or protein C activity were observed between the patients with and without DIC in any of the subgroups. Notably, neither the plasma activity of antithrombin nor protein C was decreased even in septic patients with DIC who had normal plasma levels of albumin (or choline esterase). No significant correlation was observed between plasma levels of thrombin-antithrombin complex (TAT) and antithrombin activity, or between plasma levels of TAT and protein C activity either in septic patients with DIC or without DIC. It is reasonable to conclude that the markedly reduced plasma activity of antithrombin and protein C is not due to consumption coagulopathy in septic patients with DIC.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine (III), Kanazawa University School of Medicine, Kanazawa, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Asakura H, Ontachi Y, Mizutani T, Kato M, Ito T, Saito M, Morishita E, Yamazaki M, Suga Y, Miyamoto KI, Nakao S. Depressed plasma activity of plasminogen or alpha2 plasmin inhibitor is not due to consumption coagulopathy in septic patients with disseminated intravascular coagulation. Blood Coagul Fibrinolysis 2001; 12:275-81. [PMID: 11460011 DOI: 10.1097/00001721-200106000-00008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 11/26/2022]
Abstract
We have attempted to determine whether depressed plasma plasminogen and alpha2 plasmin inhibitor (or alpha2 antiplasmin) activity is, as a result of consumption coagulopathy, a specific finding of disseminated intravascular coagulation (DIC) in septic patients. The hemostatic parameters of 139 septic patients (68 with DIC and 71 without DIC) were analyzed. Among the group as a whole, plasma activities of plasminogen and alpha2 plasmin inhibitor were significantly depressed in septic patients with DIC relative to those without DIC (P < 0.01 and P < 0.05, respectively). Notably, a significant correlation was observed between plasma levels of albumin and plasminogen activity, as well as between plasma levels of albumin and alpha2 plasmin inhibitor activity both in septic patients with DIC and those without DIC. However, no significant correlation was observed between plasma levels of plasmin-alpha2 plasmin inhibitor complex (PIC) and plasminogen activity, nor between PIC and alpha2 plasmin inhibitor activity either in septic patients with DIC or those without DIC. We concluded that depressed activity of plasminogen or alpha2 plasmin inhibitor is not as a result of consumption coagulopathy, but rather a result of low synthetic function of the liver in septic patients with DIC.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine (III), Kanazawa University School of Medicine Kanazawa, Ishikawa, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Asakura H, Aoshima K, Ichino T, Suga Y, Saito M, Morishita E, Yamazaki M, Ontachi Y, Mizutani T, Kato M, Miyamoto KI, Nakao S. All-trans retinoic acid is partially effective against lipopolysaccharide-induced but not against tissue-factor-induced disseminated intravascular coagulation in rat models. Blood Coagul Fibrinolysis 2001; 12:301-6. [PMID: 11460014 DOI: 10.1097/00001721-200106000-00011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
All-trans retinoic acid (ATRA) has been introduced to the management of acute promyelocytic leukemia (APL) as a differentiation treatment. This drug not only causes complete remission, but also improves disseminated intravascular coagulation (DIC) without adding anticoagulants in APL. We have attempted to determine whether ATRA is effective against DIC in rat models induced by tissue factor (TF) or lipopolysaccharide (LPS), because the anticoagulant effect of ATRA has been considered to induce thrombomodulin upregulation and TF downregulation on endothelial cells as well as on APL cells. In male Wistar rats, DIC was induced by a 4-h infusion of thromboplastin (3.75 U/kg) or lipopolysaccharide (30 mg/kg). The rats were given ATRA orally each day at a dose of 100 mg/kg per day for 1 week before the injection of TF or LPS in ATRA treatment groups, or given low molecular weight heparin (LMWH) 10 min before the injection of TF or LPS (200 U/kg, bolus intravenously) in LMWH treatment groups. No significant changes in hemostatic parameters or markers of organ dysfunction were caused by the ATRA administration, while DIC was significantly improved by LMWH in the TF-induced model. DIC was significantly improved by both ATRA and LMWH in the LPS-induced model. These findings suggested that ATRA was useful for treating DIC only in the LPS-induced model, and that drug efficacy should be carefully assessed because the agents used to induce DIC considerably influenced the outcome.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine (III), Kanazawa University School of Medicine, Kanazawa, Ishikawa, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Asakura H, Aoshima K, Suga Y, Yamazaki M, Morishita E, Saito M, Miyamoto K, Nakao S. Beneficial effect of the active form of vitamin D3 against LPS-induced DIC but not against tissue-factor-induced DIC in rat models. Thromb Haemost 2001; 85:287-90. [PMID: 11246549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
1Alpha,25-dihydroxyvitamin D3 (active form of vitamin D3; vitamin D3) has been reported to induce the upregulation of thrombomodulin and downregulation of tissue factor (TF) on monocytes. The possibility exists that vitamin D3 prevents the development of disseminated intravascular coagulation (DIC). In particular, monocyte TF production plays an important role in the pathophysiology of DIC in septic patients. We have attempted to determine whether vitamin D3 is effective against DIC in a rat model induced by lipopolysaccharides (LPS) (30 mg/kg, 4 h) or TF (3.75 U/kg, 4 h) using selective hemostatic parameters, markers of organ dysfunction and pathological findings (assessment of glomelular fibrin deposition). Vitamin D3 was administered orally each day at a dose of 2.0 mg/kg/day for 3 days, or low molecular weight heparin (LMWH 200 u/kg; i.v.) was given 10 min before the injection of TF or LPS in each treatment group. Vitamin D3 was effective against DIC in the rat model induced by LPS only, whereas LMWH was effective against DIC in both rat models induced by either TF or LPS. The anti-DIC effect of vitamin D3 was equal to (or more potent than) that of LMWH. The results suggested that vitamin D3 was useful for the treatment of LPS-induced DIC, and that the assessment of a drug's efficacy should be done carefully given the markedly different results obtained according to the agents used to induce DIC.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine (III), Kanazawa University School of Medicine, Ishikawa, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Asakura H, Ontachi Y, Mizutani T, Kato M, Saito M, Morishita E, Yamazaki M, Suga Y, Takami A, Miyamoto K, Nakao S. Elevated levels of free tissue factor pathway inhibitor antigen in cases of disseminated intravascular coagulation caused by various underlying diseases. Blood Coagul Fibrinolysis 2001; 12:1-8. [PMID: 11229821 DOI: 10.1097/00001721-200101000-00001] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Tissue factor pathway inhibitor (TFPI) is primarily synthesized by vascular endothelial cells and is found in vivo in association with endothelial cells, lipoproteins, or in free form. Free TFPI is the most potent and important type, because it is released from endothelial cells following an injection of heparin, or as a result of pathological stimuli. In order to study the role of TFPI in disease, the concentration of free form TFPI was measured in the plasma of 114 patients suffering from disseminated intravascular coagulation (DIC), as the result of several underlying diseases. Plasma antigen levels of free TFPI were significantly higher even in those patients not exhibiting DIC than in normal healthy subjects. These levels were even higher among patients exhibiting DIC, especially those with acute promyelocytic leukemia or cancer, receiving continuous heparin drip infusions. A significant correlation was observed between the plasma antigen levels of free form TFPI and those of fibrin/fibrinogen degradation products, and free form TFPI and plasmin inhibitor complex (r = 0.428, P < 0.0001 and r = 0.329, P < 0.0001, respectively) among 114 DIC patients. There were no significant differences between the plasma levels of free TFPI in DIC patients with or without multiple organ failure. It has been suggested that the plasma levels of free TFPI are closely related to the levels of fibrinolysis occurring in DIC patients, although further study is required to clarify the degree to which TFPI is expressed by endothelial cells during DIC.
Collapse
Affiliation(s)
- H Asakura
- Department of Internal Medicine III, Kanazawa University School of Medicine, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Hashimoto Y, Suga Y, Matsuba S, Mizoguchi M, Takamori K, Seitz J, Ogawa H. Immunohistochemical localization of sulfhydryl oxidase correlates with disulfide crosslinking in the upper epidermis of rat skin. Arch Dermatol Res 2000; 292:570-2. [PMID: 11194897 DOI: 10.1007/s004030000171] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Y Hashimoto
- Department of Dermatology, Juntendo University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
40
|
Suga Y, Jarnik M, Attar PS, Longley MA, Bundman D, Steven AC, Koch PJ, Roop DR. Transgenic mice expressing a mutant form of loricrin reveal the molecular basis of the skin diseases, Vohwinkel syndrome and progressive symmetric erythrokeratoderma. J Cell Biol 2000; 151:401-12. [PMID: 11038186 PMCID: PMC2192631 DOI: 10.1083/jcb.151.2.401] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Mutations in the cornified cell envelope protein loricrin have been reported recently in some patients with Vohwinkel syndrome (VS) and progressive symmetric erythrokeratoderma (PSEK). To establish a causative relationship between loricrin mutations and these diseases, we have generated transgenic mice expressing a COOH-terminal truncated form of loricrin that is similar to the protein expressed in VS and PSEK patients. At birth, transgenic mice (ML.VS) exhibited erythrokeratoderma with an epidermal barrier dysfunction. 4 d after birth, high-expressing transgenic animals showed a generalized scaling of the skin, as well as a constricting band encircling the tail and, by day 7, a thickening of the footpads. Histologically, ML. VS transgenic mice also showed retention of nuclei in the stratum corneum, a characteristic feature of VS and PSEK. Immunofluorescence and immunoelectron microscopy showed the mutant loricrin protein in the nucleus and cytoplasm of epidermal keratinocytes, but did not detect the protein in the cornified cell envelope. Transfection experiments indicated that the COOH-terminal domain of the mutant loricrin contains a nuclear localization signal. To determine whether the ML.VS phenotype resulted from dominant-negative interference of the transgene with endogenous loricrin, we mated the ML.VS transgenics with loricrin knockout mice. A severe phenotype was observed in mice that lacked expression of wild-type loricrin. Since loricrin knockout mice are largely asymptomatic (Koch, P.K., P. A. de Viragh, E. Scharer, D. Bundman, M.A. Longley, J. Bickenbach, Y. Kawachi, Y. Suga, Z. Zhou, M. Huber, et al., J. Cell Biol. 151:389-400, this issue), this phenotype may be attributed to expression of the mutant form of loricrin. Thus, deposition of the mutant protein in the nucleus appears to interfere with late stages of epidermal differentiation, resulting in a VS-like phenotype.
Collapse
Affiliation(s)
- Y Suga
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Koch PJ, de Viragh PA, Scharer E, Bundman D, Longley MA, Bickenbach J, Kawachi Y, Suga Y, Zhou Z, Huber M, Hohl D, Kartasova T, Jarnik M, Steven AC, Roop DR. Lessons from loricrin-deficient mice: compensatory mechanisms maintaining skin barrier function in the absence of a major cornified envelope protein. J Cell Biol 2000; 151:389-400. [PMID: 11038185 PMCID: PMC2192642 DOI: 10.1083/jcb.151.2.389] [Citation(s) in RCA: 215] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The epidermal cornified cell envelope (CE) is a complex protein-lipid composite that replaces the plasma membrane of terminally differentiated keratinocytes. This lamellar structure is essential for the barrier function of the skin and has the ability to prevent the loss of water and ions and to protect from environmental hazards. The major protein of the epidermal CE is loricrin, contributing approximately 70% by mass. We have generated mice that are deficient for this protein. These mice showed a delay in the formation of the skin barrier in embryonic development. At birth, homozygous mutant mice weighed less than control littermates and showed skin abnormalities, such as congenital erythroderma with a shiny, translucent skin. Tape stripping experiments suggested that the stratum corneum stability was reduced in newborn Lor(-/-) mice compared with wild-type controls. Isolated mutant CEs were more easily fragmented by sonication in vitro, indicating a greater susceptibility to mechanical stress. Nevertheless, we did not detect impaired epidermal barrier function in these mice. Surprisingly, the skin phenotype disappeared 4-5 d after birth. At least one of the compensatory mechanisms preventing a more severe skin phenotype in newborn Lor(-/-) mice is an increase in the expression of other CE components, such as SPRRP2D and SPRRP2H, members of the family of "small proline rich proteins", and repetin, a member of the "fused gene" subgroup of the S100 gene family.
Collapse
Affiliation(s)
- P J Koch
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Mizoguchi M, Ikeda S, Suga Y, Ogawa H. Expression of cytokeratins and cornified cell envelope-associated proteins in umbilical cord epithelium: a comparative study of the umbilical cord, amniotic epithelia and fetal skin. J Invest Dermatol 2000; 115:133-4. [PMID: 10886524 DOI: 10.1046/j.1523-1747.2000.00031-4.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
43
|
Kobayashi M, Hiruma M, Suga Y, Nishimura K, Ogawa H. A patient with a seborrheic keratosis which caused impaired hearing by closure of the external auditory meatus. Int J Dermatol 2000; 39:550-1. [PMID: 10940123 DOI: 10.1046/j.1365-4362.2000.00819.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
44
|
Abe Y, Sugiura T, Suga Y, Takehana K, Kamihata H, Karakawa M, Inada M, Iwasaka T. Scintigraphic predictor of left ventricular size after acute myocardial infarction. Cardiology 2000; 92:73-8. [PMID: 10702647 DOI: 10.1159/000006951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to evaluate the relation between thallium-201 scintigraphic indices and left ventricular size after acute myocardial infarction. Forty-seven patients with acute myocardial infarction underwent rest-redistribution thallium-201 scintigraphy at 2 weeks and left ventriculography at 4 weeks, after the onset of myocardial infarction. Percent (%) fixed defect, %redistribution and %reverse redistribution, calculated as a percentage of whole left ventricular area, were quantified with computer-generated unfolded map method of the myocardial radioactivity. Despite no significant difference in peak plasma creatine phosphokinase between the two groups, patients with anterior myocardial infarction (28 patients) had larger %fixed defect (p < 0.01), which was associated with higher end-diastolic pressure (p < 0.05) and larger end-diastolic volume index (p < 0.01) than those with inferior myocardial infarction (19 patients). End-diastolic volume index was not related to %redistribution and %reverse redistribution, but there was a good relation between end-diastolic volume index and %fixed defect in anterior (r = 0.79, p < 0.001) and in inferior (r = 0.73, p < 0.001) myocardial infarction. However, left ventricular end-diastolic volume index in anterior myocardial infarction was larger than that of inferior myocardial infarction at any given %fixed defect. Thus, site as well as size of fixed defect at 2 weeks after the onset of acute myocardial infarction was related to left ventricular end-diastolic volume at chronic phase.
Collapse
Affiliation(s)
- Y Abe
- Second Department of Internal Medicine and Department of Radiology Kansai Medical University, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Abstract
A 25-year-old Japanese woman presented with contracture of the fingers and toes, and difficulty in opening her mouth. Her grandparents are first cousins, but none of the other members of the family are affected. Bulla formation started at birth on areas of the skin that received pressure, and in infancy and early childhood the lesions were limited only to the acral areas. She also had bilateral, incomplete syndactylies involving all web spaces (Fig. 1a). The formation of blisters ceased after the age of 15 years, but a generalized progressive poikiloderma then appeared with accompanying cutaneous atrophy of the skin of the neck, trunk, and extremities (Fig. 1b). The patient experienced mild photosensitivity of the face and neck. At age 18 years, surgical removal of the webbing of all her fingers was performed. Oral examination showed atrophy of the buccal mucosa, and an inability to fully open the mouth. The patient also suffered from poor dentition and easily bleeding gums, but had no symptoms of esophageal dysfunction. Histology of separate biopsy specimens, taken from the poikilodermatous pretibial and trunk skin, showed classical features of poikiloderma, namely epidermal atrophy with flattening of the rete ridges, vacuolization of basal keratinocytes, pigmentary incontinence, and mild dermal perivascularization (Fig. 2a). Interestingly, dyskeratotic cells (Fig. 2b) and eosinophilic rounded bodies (colloid bodies) (Fig. 2c) were frequently found at the basal keratinocyte layer and in the upper dermis, respectively. Pigment was also present in the upper epidermis. To rule out the possibility of a congenital epidermolysis bullosa, ultrastructural and immunofluorescence studies were performed. Ultrastructural studies demonstrated the reduplication of the basal lamina with branching structures within the upper dermis and cleavage between the lamina densa and the cell membrane of the keratinocytes (Fig. 3a). The numbers of associated anchoring fibrils did not seem to be reduced, and colloid bodies and dyskeratotic cells were detected. Immunofluorescence studies with the antibody against type VII collagen (LH 7 : 2) were subsequently carried out. The results showed extensive broad bands with intermittently discontinuous and reticular staining at the dermo-epidermal junction (DEJ) (Fig. 3b), whereas a linear distribution is typically seen in healthy tissue (data not shown). Interestingly, direct immunofluorescence studies revealed intracellular accumulation of immunoglobulin G (IgG), IgM, IgA, and C3 in colloid bodies under the basement membrane (Fig. 3c).
Collapse
Affiliation(s)
- Y Suga
- Department of Dermatology, Juntendo University School of Medicine, Tokyo, Japan
| | | | | | | | | |
Collapse
|
46
|
Oikawa M, Saito T, Takahisa K, Suga Y, Kino K, Nakagawa T, Tohei T, Abe K, Ueno H. Out of plane measurements of the decay neutron from the giant resonance in the 12C(e,e(')n)11C reaction. Phys Rev Lett 2000; 84:2338-2341. [PMID: 11018879 DOI: 10.1103/physrevlett.84.2338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/1999] [Indexed: 05/23/2023]
Abstract
Out of plane measurements of the angular correlations for the 12C(e, e(')n) reaction have been performed for the first time in the giant resonance region. The cross sections were directly separated into the longitudinal and transverse, longitudinal-transverse, and transverse-transverse components. The cross section at the peak of the giant resonance ( omega = 22.5 MeV) has been found to be almost all longitudinal. It was reproduced by the multipole expansion with E0 and E2 components besides E1. The longitudinal-transverse component might have a maximum around 24 MeV. The transverse-transverse component is very small over the giant resonance.
Collapse
Affiliation(s)
- M Oikawa
- Laboratory of Nuclear Science, Tohoku University, Mikamine, Taihakuku, Sendai 982-0826, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
We report a case of ichthyosis linearis circumflexa (ILC) without the typical atopic manifestations and deformities of the hair shaft. The patient responded positively to treatment with topical tacrolimus, suggesting that abnormalities in the immunoregulatory mechanism may be involved in the pathogenesis of ILC.
Collapse
Affiliation(s)
- Y Suga
- Department of Dermatology, Juntendo University School of Medicine, Tokyo, Japan
| | | | | | | | | |
Collapse
|
48
|
Suga Y, Arin MJ, Scott G, Goldsmith LA, Magro CM, Baden LA, Baden HP, Roop DR. Hot spot mutations in keratin 2e suggest a correlation between genotype and phenotype in patients with ichthyosis bullosa of Siemens. Exp Dermatol 2000; 9:11-5. [PMID: 10688369 DOI: 10.1034/j.1600-0625.2000.009001011.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Ichthyosis bullosa of Siemens (IBS) is a rare disorder of cornification characterized by blister formation in the upper suprabasal layers of the epidermis. Molecular analysis of IBS has identified mutations in the keratin 2e (K2e) gene, which is located in the type II keratin gene cluster on chromosome 12q. We have studied two IBS families and have identified heterozygous point mutations in codon 493 of the K2e gene in both families. Whereas a non-conservative amino acid substitution at position 117 of the 2B region of K2e (E117K) was associated with a severe phenotype in family 1, family 2 showed mild clinical features as a result of a conservative substitution (E117D). These data suggest a phenotype-genotype correlation in these families.
Collapse
Affiliation(s)
- Y Suga
- Department of Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Hashimoto Y, Suga Y, Yoshiike T, Hashimoto T, Takamori K. A case of antiepiligrin cicatricial pemphigoid successfully treated by plasmapheresis. Dermatology 2000; 201:58-60. [PMID: 10971064 DOI: 10.1159/000018433] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [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: 11/19/2022] Open
Abstract
We report the case of a 73-year-old Japanese woman suffering from antiepiligrin (laminin 5) cicatricial pemphigoid (CP) with typical clinical and immunopathological features. Histologically, the lesional mucous membrane showed a subepidermal blister formation. When indirect immunofluorescence techniques with skin split by 1 M NaCl as the substrate were used, the patient's serum reacted only to the dermal side. Immunoprecipitation studies demonstrated that the patient's serum contained IgG autoantibodies directed against a set of polypeptides that corresponded to epiligrin (laminin 5). After corticosteroids and immunosuppressive agents had been administered systemically, the patient's autoantibody titer decreased and the cutaneous and mucosal blister formations were suppressed. However, the ocular lesions persisted in spite of these therapeutic regimens. After combining these treatments with double-filtration plasmapheresis, the ocular lesions improved and showed almost no progression. Plasmapheresis may thus present a new option for the treatment of CP.
Collapse
Affiliation(s)
- Y Hashimoto
- Department of Dermatology, Juntendo University School of Medicine Urayasu Hospital, Chiba, Japan
| | | | | | | | | |
Collapse
|
50
|
Ohsumi K, Hatanaka T, Nakagawa R, Fukuda Y, Morinaga Y, Suga Y, Nihei Y, Ohishi K, Akiyama Y, Tsuji T. Synthesis and antitumor activities of amino acid prodrugs of amino-combretastatins. Anticancer Drug Des 1999; 14:539-48. [PMID: 10834274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The synthesis and antitumor activity of water-soluble amino acid prodrugs of amino-combretastatins were reported. Among the synthesized compounds, 7e (CS-39-L-Ser HCI, AC-7700) showed enhanced antitumor activity and decreased toxicity in a Colon 26 murine adenocarcinoma model. Compound 7e showed improved solubility and was easily formulated for in vivo administration. Compound 7e was cleaved to generate the parent compound, CS-39, in the whole blood of mice as well as man, possibly by the action of amino peptidase on the erythrocyte membrane.
Collapse
Affiliation(s)
- K Ohsumi
- Pharmaceutical Research Laboratories, Ajinomoto Co Inc., Kawasaki, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|