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Hashiguchi K, Yamaguchi N, Shiota J, Akashi T, Ogihara K, Tabuchi M, Kitayama M, Matsushima K, Akazawa Y, Ohnita K, Nakao K. 'Underwater endoscopic mucosal resection with submucosal injection and marking' for superficial non-ampullary duodenal epithelial tumors to achieve R0 resection: a single-center case series. Scand J Gastroenterol 2023:1-9. [PMID: 36708197 DOI: 10.1080/00365521.2023.2171315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVES To describe an endoscopic technique named 'underwater endoscopic mucosal resection (UEMR) with submucosal injection and marking (UEMR-SIM)' and to evaluate the therapeutic characteristics of superficial non-ampullary duodenal epithelial tumors (SNADETs) < 20 mm vis-a-vis classical EMR (CEMR) and UEMR techniques. MATERIALS AND METHODS This retrospective study included 103 consecutive SNADET patients (103 lesions) who underwent CEMR, UEMR, or UEMR-SIM. The UEMR-SIM procedure included (1) marking and submucosal injection, (2) filling of the duodenal lumen with 0.9% saline, (3) snaring of the lesion, and (4) electrosurgical removal. The procedural outcomes were compared between the UEMR-SIM and other-procedure groups. RESULTS The en bloc resection rate was significantly higher in the UEMR-SIM group (100%) than in the CEMR group (76.8%) (p = 0.015) but was not statistically different between the UEMR-SIM and UEMR groups (88.0%) (p = 0.236). The R0 resection rate was significantly higher in the UEMR-SIM group (90.9%) than in the UEMR group (48.0%) (p = 0.001) but was not statistically different between the UEMR-SIM and CEMR groups (76.8%) (p = 0.209). CONCLUSIONS Our study indicates that the proposed method, UEMR-SIM for SNADETs, is feasible to achieve a high R0 resection rate and a potentially low local recurrence rate.
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Affiliation(s)
- Keiichi Hashiguchi
- Department of Endoscopy, Nagasaki University Hospital, Nagasaki, Japan.,Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Naoyuki Yamaguchi
- Department of Endoscopy, Nagasaki University Hospital, Nagasaki, Japan
| | - Junya Shiota
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Taro Akashi
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Maiko Tabuchi
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Moto Kitayama
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kayoko Matsushima
- Medical Education Development Center, Nagasaki University Hospital, Nagasaki, Japan
| | - Yuko Akazawa
- Department of Histology and Biomedical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ken Ohnita
- Department of Gastroenterology, Inoue Hospital, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Yamamoto H, Takeshima F, Haraguchi M, Akazawa Y, Matsushima K, Kitayama M, Ogihara K, Tabuchi M, Hashiguchi K, Yamaguchi N, Miyaaki H, Kondo H, Nakao K. High serum concentrations of growth differentiation factor-15 and their association with Crohn's disease and a low skeletal muscle index. Sci Rep 2022; 12:6591. [PMID: 35449185 PMCID: PMC9023473 DOI: 10.1038/s41598-022-10587-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Received: 09/14/2021] [Accepted: 04/05/2022] [Indexed: 12/26/2022] Open
Abstract
Sarcopenia comprises a low skeletal muscle index (SMI) and low muscle strength (MS) or low physical function. Many sarcopenia biomarkers have been reported. With Crohn’s disease (CD), a low SMI is predictive of intestinal complications. Therefore, many CD studies have reported that sarcopenia is defined by SMI alone. This study investigated the sarcopenia frequency by assessing the SMI and MS of Japanese patients with CD and biomarkers predicting a low SMI. We evaluated the SMI using a bioelectrical impedance analysis, handgrip strength, and C-reactive protein, albumin, interleukin-6, tumor necrosis factor-α, growth differentiation factor (GDF)-8, and GDF-15 levels as biomarker candidates for 78 CD patients at our hospital. Sarcopenia and a low SMI were observed in 7.7% and 42.3% of the patients, respectively. There was a significant difference in the GDF-15 levels of the low SMI group and normal group according to the multivariate analysis (P = 0.028; odds ratio [OR], 1.001; 95% confidence interval [CI] 1.000–1.002). When evaluated by sex, males exhibited a negative correlation between the GDF-15 level and SMI (Pearson’s r = − 0.414; P = 0.0031), and the multivariate analysis indicated a significant difference in the GDF-15 levels (P = 0.011; OR, 1.001; 95% CI 1.000–1.002). GDF-15 levels may indicate a low SMI with CD.
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Affiliation(s)
- Hiroyuki Yamamoto
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan.
| | - Fuminao Takeshima
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan.,Department of Internal Medicine, Nagasaki Prefecture Goto Central Hospital, Nagasaki, Japan
| | - Masafumi Haraguchi
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | - Yuko Akazawa
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan.,Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Kayoko Matsushima
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | - Moto Kitayama
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | - Maiko Tabuchi
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | | | - Naoyuki Yamaguchi
- Department of Endoscopy, Nagasaki University Hospital, Nagasaki, Japan
| | - Hisamitsu Miyaaki
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
| | - Hisayoshi Kondo
- Biostatistics Section, Division of Scientific Data Registry, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Graduate School of Biomedical Science, Nagasaki University, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan
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Kanda T, Yoshida A, Ogihara K, Minami H, Yamaguchi N, Ikebuchi Y, Nakao K, Isomoto H. Detection of cytokine storm in patients with achalasia using ELISA. Biomed Rep 2021; 15:62. [PMID: 34113444 PMCID: PMC8188164 DOI: 10.3892/br.2021.1438] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/19/2021] [Indexed: 12/18/2022] Open
Abstract
Esophageal achalasia is characterized by abnormal peristaltic movements of the esophageal body and impaired relaxation of the lower esophageal sphincter (LES). However, its etiology remains unknown. In our previous study, it was shown that in the LES of patients with achalasia, hsv1-miR-H1 was overexpressed, ATG16L1 expression was downregulated and interleukin (IL)-1β levels were upregulated. However, systemic features were not evaluated. Herein, the plasma cytokine levels in patients with achalasia were determined. Plasma was collected from patients at Nagasaki University Hospital between February 2013 and March 2016, both before and after peroral endoscopic myotomy (POEM). Cytokine analysis was performed using plasma collected from 10 healthy individuals (control group) and 12 patients with achalasia using the Bio-Plex Pro™ Human Cytokine 27-plex assay kit. The levels of IL-17, IL-1β, C-C motif chemokine ligand 2, IL-4, IL-5, IL-1ra, IL-7, IL-12, interferon-γ, IL-2, fibroblast growth factor-2, colony-stimulating factor (CSF)2 and CSF3 were significantly higher in patients with achalasia compared with the control subjects. However, the levels did not differ between plasma samples collected before and after POEM. Thus, the occurrence of a cytokine storm was confirmed in the patients with achalasia.
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Affiliation(s)
- Tsutomu Kanda
- Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan
| | - Akira Yoshida
- Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University, Nagasaki 852-8501, Japan
| | - Hitomi Minami
- Department of Gastroenterology and Hepatology, Nagasaki University, Nagasaki 852-8501, Japan
| | - Naoyuki Yamaguchi
- Department of Gastroenterology and Hepatology, Nagasaki University, Nagasaki 852-8501, Japan
| | - Yuichiro Ikebuchi
- Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University, Nagasaki 852-8501, Japan
| | - Hajime Isomoto
- Division of Gastroenterology and Nephrology, Faculty of Medicine, Tottori University, Yonago, Tottori 683-8504, Japan
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Shigeta K, Kufukihara R, Ogihara K, Arita Y, Akita H, Suzuki T, Mizuno R, Kikuchi E, Jinzaki M, Oya M. Diagnostic performance of vesical imaging-reporting and data system for detecting muscle-invasive bladder cancer in real clinical setting: Comparison to diagnostic cystoscopy. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01108-8] [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: 11/27/2022]
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Ichkhanian Y, Abimansour JP, Pioche M, Vosoughi K, Eleftheriadis N, Chiu PWY, Minami H, Ogihara K, Sanaei O, Jovani M, Khashab MA. Outcomes of anterior versus posterior peroral endoscopic myotomy 2 years post-procedure: prospective follow-up results from a randomized clinical trial. Endoscopy 2021; 53:462-468. [PMID: 32572862 DOI: 10.1055/a-1204-4242] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 12/28/2022]
Abstract
BACKGROUND Peroral endoscopic myotomy (POEM) is considered a primary treatment modality for achalasia. It can be performed using either the anterior or posterior approach. A previous randomized clinical trial (RCT) showed that the posterior approach was noninferior to the anterior approach at 1 year post-POEM in terms of clinical success, rate of adverse event, and risk of gastroesophageal reflux disease (GERD). The aim of this post-RCT study was to compare outcomes at ≥ 2 years post-POEM. METHODS Patients who previously completed the 1-year follow-up were contacted and their Eckardt, dysphagia, and GERD questionnaire (GERDQ) scores and frequency of proton pump inhibitor use were recorded. Clinical success was defined as an Eckardt score < 3. RESULTS 150 patients were initially randomized and 138 completed the 1-year follow-up. Of the 138, 111 (anterior group 54, posterior group 57) also completed ≥ 2 years of follow-up, with an overall clinical success decrease from 89 % to 82 %. At ≥ 2 years post-POEM, clinical success was achieved in 46/54 (85 %) and 45/57 (79 %) in the anterior and posterior groups, respectively (P = 0.43). A similar decrease in clinical success was noted in both groups at ≥ 2 years (anterior: 90 % to 85 %; posterior 89 % to 79 %; P = 0.47). GERDQ score was 6 (interquartile range 6 - 8; P = 0.08) in both treatment groups. CONCLUSIONS The anterior and posterior POEM techniques remained equally effective at 2 years and decreases in efficacy were similar between the two approaches over time. GERD outcomes were also similar in both groups during medium-term follow-up.
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Affiliation(s)
- Yervant Ichkhanian
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
| | - Jad P Abimansour
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
| | - Mathieu Pioche
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Lyon, France
| | - Kia Vosoughi
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
| | - Nicholas Eleftheriadis
- Endoscopy Department, Gastroenterology Unit, Metropolitan Hospital Athens, Athens, Greece.,Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Philip Wai Yan Chiu
- Division of Upper GI and Metabolic Surgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hitomi Minami
- Department of Gastroenterology and Hepatology, Nagazaki University Hospital, Nagazaki, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagazaki University Hospital, Nagazaki, Japan
| | - Omid Sanaei
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
| | - Manol Jovani
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
| | - Mouen A Khashab
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, United States
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Hashiguchi K, Maruya Y, Matsumoto R, Yamaguchi S, Ogihara K, Ohnita K, Kobayashi S, Kanetaka K, Nakao K, Eguchi S. Establishment of an in-vivo porcine delayed perforation model after duodenal endoscopic submucosal dissection. Dig Endosc 2021; 33:381-389. [PMID: 32367598 DOI: 10.1111/den.13710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/18/2019] [Accepted: 04/27/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Duodenal endoscopic submucosal dissection (ESD) for superficial non-ampullary duodenal epithelial tumors has a significant incidence rate of delayed perforation. Although several methods have been proposed to prevent delayed perforation, the most appropriate methods remain unclear. Currently, there is no appropriate animal model to validate methods for preventing duodenal delayed perforation. This study aimed to establish an in-vivo porcine delayed perforation model after duodenal submucosal dissection. METHODS Two porcine models underwent either ESD or surgical submucosal dissection. In the surgical dissection model, an inverted duodenal mucosa was resected with electrosurgical energy. In the ESD model, a gauze was placed behind the duodenum with grasped transverse part to improve endoscopic maneuverability. The mucosal defects after dissection were treated with omental coverage without suture in both models. All models were euthanized 0-5 days after procedure. Body weight; resection size; procedure dissection time; presence of intraoperative perforation and delayed perforation; and adhesion score were assessed. RESULTS There were no significant differences in body weight and adhesion score between the two models. Resection size was significantly larger in the surgical dissection models than in the ESD models (19 mm vs 14.3 mm, P < 0.01). Procedure time was significantly longer in the ESD models than in the surgical models (45.2 minutes vs 4.5 minutes, P < 0.01). Delayed perforation rates in the surgical dissection models and the ESD models were 0% (0/5) and 100% (5/5), respectively (P < 0.01). CONCLUSIONS This study indicated that our in-vivo porcine duodenal ESD model is beneficial to evaluate a prevention strategy for delayed perforation.
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Affiliation(s)
| | - Yasuhiro Maruya
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Tissue Engineering and Regenerative Therapeutics in Gastrointestinal Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ryo Matsumoto
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shun Yamaguchi
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kumi Ogihara
- Department of, Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ken Ohnita
- Department of Gastroenterology, Inoue Hospital, Nagasaki, Japan
| | - Shinichiro Kobayashi
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kengo Kanetaka
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Tissue Engineering and Regenerative Therapeutics in Gastrointestinal Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of, Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Susumu Eguchi
- Departments of, Department of, Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Khashab MA, Sanaei O, Rivory J, Eleftheriadis N, Chiu PWY, Shiwaku H, Ogihara K, Ismail A, Abusamaan MS, El Zein MH, Wong VW, Billioux VG, Kumbhari V, Kalloo AN, Ponchon T, Pioche M. Peroral endoscopic myotomy: anterior versus posterior approach: a randomized single-blinded clinical trial. Gastrointest Endosc 2020; 91:288-297.e7. [PMID: 31408652 DOI: 10.1016/j.gie.2019.07.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [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] [Received: 01/25/2019] [Accepted: 07/24/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Peroral endoscopic myotomy (POEM) has become the mainstay for the treatment of achalasia at many institutions around the world since its inception in 2008. POEM can be performed using either the anterior or posterior approach. The primary aim of this study was to compare the efficacy of the anterior and posterior approaches at 1 year after POEM. METHODS This is a single-blinded, randomized, noninferiority international clinical trial. Eligible participants were adult patients with a confirmed diagnosis of achalasia via high-resolution esophageal manometry. Patients were randomly allocated with a 1:1 ratio to receive POEM with anterior or posterior approach. The primary aim was to compare the rate of clinical success (Eckardt score <3) of anterior and posterior approaches at 1 year. RESULTS One hundred fifty patients were randomized to receive either anterior (n = 73) or posterior (n = 77) POEM. One hundred forty-eight patients received the POEM treatment, and 138 patients completed the 1-year follow-up and were included in the primary efficacy analysis. Technical success was achieved in 71 patients (97.3%) in the anterior group versus 77 patients (100%) in the posterior group (P = .23). The median (interquartile range) length of hospital stay after the procedure was 2 (1-3) days for both groups. Adverse events occurred in 15 patients (10%), 8 patients (11%) in the anterior group and 7 patients (9%) in the posterior group (P = .703). Clinical success was achieved in 90% of patients in the anterior group and 89% of patients in the posterior group. Abnormal esophageal acid exposure was detected in 29 of 59 patients (49%) and 25 of 60 patients (42%) in the anterior and posterior groups, respectively (P = .67). GERD questionnaire scores were also not significantly different between the study groups. In both groups, quality of life improved after POEM for all 36-Item Short-Form Health Survey measures and was similar between both groups. CONCLUSIONS Posterior myotomy during POEM was not inferior to anterior myotomy in terms of efficacy and safety in the treatment of patients with achalasia. (Clinical trial registration number: NCT02454335.).
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Affiliation(s)
- Mouen A Khashab
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Omid Sanaei
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Jerome Rivory
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Lyon, France
| | - Nicholas Eleftheriadis
- Endoscopy Department, Gastroenterology Unit, Metropolitan Hospital Athens, Athens, and Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Philip Wai Yan Chiu
- Division of Upper GI & Metabolic Surgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hironari Shiwaku
- Department of Gastroenterological Surgery, Fukuoka University Faculty of Medicine, Fukuoka, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagazaki University Hospital, Nagazaki, Japan
| | - Amr Ismail
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Mohammed S Abusamaan
- Division of General Internal Medicine, Johns Hopkins Medical Institutions, Baltimore, MD, United States
| | - Mohamad H El Zein
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Vivien W Wong
- Division of Upper GI & Metabolic Surgery, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Veena G Billioux
- Bayview Pediatrics, Johns Hopkins University, School of Medicine, Baltimore, Maryland, USA
| | - Vivek Kumbhari
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Anthony N Kalloo
- Division of Gastroenterology and Hepatology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Thierry Ponchon
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Lyon, France
| | - Mathieu Pioche
- Endoscopy and Gastroenterology Unit, Edouard Herriot Hospital, Lyon, France
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Ogihara K, Kikuchi E, Okabe T, Hattori S, Yamashita R, Yoshimine S, Shirotake S, Matsumoto K, Mizuno R, Hara S, Oyama M, Niwakawa M, Oya M. Neutrophil-to-lymphocyte ratio is a useful biomarker for predicting worse clinical outcome in chemo-resistant urothelial carcinoma patients treated with pembrolizumab. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz425.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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9
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Shigeta K, Kikuchi E, Abe T, Hagiwara M, Ogihara K, Tanaka N, Takeda T, Matsumoto K, Mizuno R, Oya M. A novel risk-based approach simulating oncologic surveillance according to smoking status after radical nephroureterectomy with upper tract urothelial carcinoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz425.001] [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: 11/14/2022] Open
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10
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Tag-Adeen M, Ozawa E, Ogihara K, Iwatsu S, Akazawa Y, Ohnita K, Adachi T, Sumida Y, Nakao K. The role of pancreatic juice cytology in the diagnosis of pancreatic intraductal papillary mucinous neoplasm. Rev Esp Enferm Dig 2019; 110:775-781. [PMID: 30168338 DOI: 10.17235/reed.2018.5564/2018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND AIM pancreatic juice cytology (PJC) is an important predictor of malignant intraductal papillary mucinous neoplasm (IPMN). This study aimed to determine the role of PJC for the prediction of malignant IPMN (intraductal papillary mucinous cancer [IPMC]). METHODS medical records of IPMN patients who underwent surgery between 2012 and 2016 at the Nagasaki University Hospital were reviewed. Patients who underwent preoperative PJC were classified as high risk stigmata (HRS), worrisome features (WF) and no-criteria, based on imaging criteria. PJC class III or higher was considered as positive and only invasive IPMN was defined as IPMC. PJC was validated in each group with regard to sensitivity, specificity, accuracy with the corresponding 95% confidence intervals (95% CI) and area under receiver operating curve (AUROC) analysis. A p-value of < 0.05 was considered as statistically significant. RESULTS preoperative pancreatic juice was obtained in 33/52 IPMN patients; only patients with adequate aspirate for cytology (n = 29) were included. In the HRS group (n = 9), 4/6 non-IPMC had a negative PJC and 3/3 IPMC had a positive PJC. In the WF group (n = 17), 9/11 non-IPMC had a negative PJC and 3/6 IPMC had a positive PJC. Adding PJC to imaging results improved the AUROCs of HRS and WF from 0.63 and 0.62 to 0.83 and 0.66, respectively. PJC was negative in all no-criteria cases (n = 3; one IPMC and two non-IPMC). In all 29 patients, PJC sensitivity was 60% (95% CI: 26%-88%), specificity was 79% (95% CI: 54%-94%), accuracy was 72% (95% CI: 63%-89%) and the AUROC was 0.69 (p = 0.03). CONCLUSION PJC is a statistically significant IPMC predictor that can improve the validity of imaging for IPMC prediction.
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Affiliation(s)
- Mohammed Tag-Adeen
- Department off Internal Medicine, Faculty of Medicine, South Valley University, Egypt
| | - Eisuke Ozawa
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan., Nagasaki
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan
| | - Shinichi Iwatsu
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan
| | - Yuko Akazawa
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan
| | - Ken Ohnita
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan
| | - Tomohiko Adachi
- Department of Surgery, Nagasaki University Hospital, Nagasaki, Japan
| | - Yorihisa Sumida
- Department of Surgery, Nagasaki University Hospital, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki, Japan
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11
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Tabuchi M, Minami H, Akazawa Y, Ogihara K, Kitayama M, Hashiguchi K, Matsushima K, Yamaguchi N, Ohnita K, Takeshima F, Inoue H, Nakao K. Persistent chest pain in young male patient: Jackhammer esophagus treated with peroral endoscopic myotomy. JGH Open 2019. [PMCID: PMC6487828 DOI: 10.1002/jgh3.12115] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Initial esophagogastroduodenoscopy (EGD) shows segmental contractions right above the gastro‐esophageal junction, which may be related to the symptoms. A clip was applied during a previously performed manometry. There was no evidence of stricture. High‐resolution manometry before peroral endoscopic myotomy shows a hypercontractile esophagus expressed as distal contractile integral > 8000 mmHg cm s two times out of 10.
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Affiliation(s)
- Maiko Tabuchi
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Hitomi Minami
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Yuko Akazawa
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Kumi Ogihara
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Moto Kitayama
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Keiichi Hashiguchi
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Kayoko Matsushima
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Naoyuki Yamaguchi
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Ken Ohnita
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Fuminao Takeshima
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
| | - Haruhiro Inoue
- Digestive Disease CenterShowa University Koto‐Toyosu Hospital Tokyo Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and HepatologyNagasaki University Graduate School of Biomedical Science Nagasaki Japan
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12
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Madarame H, Kayanuma H, Ogihara K, Yoshida S, Yamamoto K, Tsuyuki Y, Wada T, Yamamoto T. Disseminated non-tuberculous mycobacterial disease in a cat caused by Mycobacterium sp. Strain MFM001. J Comp Pathol 2019. [DOI: 10.1016/j.jcpa.2018.10.098] [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: 10/27/2022]
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13
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Kurumi H, Kanda T, Kawaguchi K, Yashima K, Koda H, Ogihara K, Matsushima K, Nakao K, Saito H, Fujiwara Y, Osaki M, Okada F, Isomoto H. Protoporphyrinogen oxidase is involved in the fluorescence intensity of 5-aminolevulinic acid-mediated laser-based photodynamic endoscopic diagnosis for early gastric cancer. Photodiagnosis Photodyn Ther 2018; 22:79-85. [PMID: 29425880 DOI: 10.1016/j.pdpdt.2018.02.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 11/18/2017] [Revised: 01/10/2018] [Accepted: 02/05/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM Laser-based photodynamic endoscopic diagnosis (LPDED) is a type of endoscopic diagnosis that uses the fluorescence caused by the photochemical reaction that occurs when a fluorescent substance is irradiated by a light of a specific wavelength. Although 5-aminolevulinic acid (5-ALA) can detect early gastric cancer (EGC) during LPDED, there is an unresolved issue of the differences in fluorescence intensity among histopathological types of gastric cancer. Thus, the aim of the present study was to assess whether protoporphyrinogen oxidase (PPOX), involved in the activation of protoporphyrin IX, can affect the fluorescence intensity in EGC. METHODS Thirty-three gastric tumor lesions in 30 patients were assessed by LPDED using a prototype endoscope equipped with a blue laser ray to cause excitation following oral 5-ALA administration. The tumors were then resected by endoscopic submucosal dissection or laparoscopic surgery. PPOX expression was examined immunohistochemically in the excised specimens. To explore the mechanisms of histopathological diversity in PPOX and coproporphyrinogen oxidase (CPOX) expression of EGC, immunohistochemical analysis was performed using 75 surgically resected specimens of diverse EGCs. RESULTS Among the 33 lesions, 26 tumors were detectable by LPDED, whereas seven were undetectable. Between the LPDED-positive and negative groups, there was a significant difference in histopathology. The expression of PPOX was higher in tubular adenocarcinoma (tub) than in signet-ring cell carcinoma (sig). There were significant differences in PPOX and CPOX expression scores of the surgically resected specimens among tub, poorly differentiated adenocarcinoma (por), and sig. CONCLUSION PPOX protein expression could be involved in the fluorescence intensity of LPDED in EGC, possibly reflecting histopathological features.
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Affiliation(s)
- Hiroki Kurumi
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Tsutomu Kanda
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Koichiro Kawaguchi
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Kazuo Yashima
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Hiroki Koda
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Kayoko Matsushima
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Hiroaki Saito
- Division of Surgical Oncology, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Yoshiyuki Fujiwara
- Division of Surgical Oncology, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan
| | - Mitsuhiko Osaki
- Division of Pathological Biochemistry, Faculty of Medicine, Tottori University, 86-1 Nishi-cho, Yonago 683-8503, Japan
| | - Futoshi Okada
- Division of Pathological Biochemistry, Faculty of Medicine, Tottori University, 86-1 Nishi-cho, Yonago 683-8503, Japan
| | - Hajime Isomoto
- Division of Medicine and Clinical Science, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8504, Japan.
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14
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Lai YC, Ushio N, Rahman MM, Katanoda Y, Ogihara K, Naya Y, Moriyama A, Iwanaga T, Saitoh Y, Sogawa T, Sunaga T, Momoi Y, Izumi H, Miyoshi N, Endo Y, Fujiki M, Kawaguchi H, Miura N. Aberrant expression of microRNAs and the miR-1/MET pathway in canine hepatocellular carcinoma. Vet Comp Oncol 2018; 16:288-296. [DOI: 10.1111/vco.12379] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 11/16/2017] [Accepted: 11/30/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Y.-C. Lai
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - N. Ushio
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - M. M. Rahman
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - Y. Katanoda
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - K. Ogihara
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - Y. Naya
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - A. Moriyama
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - T. Iwanaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Saitoh
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sogawa
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sunaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Momoi
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Izumi
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - N. Miyoshi
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Endo
- Laboratory of Small Animal Internal Medicine, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - M. Fujiki
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Kawaguchi
- Department of Hygiene and Health Promotion Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - N. Miura
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
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15
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Madarame H, Saito M, Ogihara K, Ochiai H, Oba M, Omatsu T, Tsuyuki Y, Mizutani T. Mycobacterium avium Subsup. hominissuis Meningoencephalitis in a Cat. J Comp Pathol 2018. [DOI: 10.1016/j.jcpa.2017.10.088] [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: 11/28/2022]
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16
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Ogihara K, Akazawa Y, Nakao K. Successful endoscopic closure of gastrocutaneous fistulas using a combination of polyethylene glycolic acid mesh and the Funada-style gastropexy device. Dig Endosc 2017; 29:728-729. [PMID: 28556975 DOI: 10.1111/den.12899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 02/08/2023]
Affiliation(s)
- Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuko Akazawa
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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17
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Ogihara K, Isomoto H, Kurumi H, Kanda T, Hashisako M, Tabata K, Ishii H, Ohnita K, Yamaguchi N, Akazawa Y, Matsushima K, Takeshima F, Kunizaki M, Hidaka S, Nanashima A, Fukuoka J, Nagayasu T, Nakao K. Expression of coproporphyrinogen oxidase is associated with detection of upper gastrointestinal carcinomas by 5-aminolevulinic acid-mediated photodynamic diagnosis. Photodiagnosis Photodyn Ther 2017; 19:15-21. [PMID: 28416355 DOI: 10.1016/j.pdpdt.2017.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 04/02/2017] [Accepted: 04/05/2017] [Indexed: 01/22/2023]
Abstract
BACKGROUND 5-Aminolevulinic acid is a precursor of photosensitizing protoporphyrin IX and has been applied for photodynamic diagnosis of brain and bladder tumors with few side effects. Although most upper gastrointestinal tumors can be detected during photodynamic diagnosis, some tumors containing signet-ring cells cannot be visualized. Here, we aimed to assess whether proteins involved in the absorbance, activation, and turnover of protoporphyrin IX altered the fluorescence signal in gastric cancer. METHODS Aminolevulinic acid-mediated photodynamic diagnosis was performed in 23 lesions from 20 patients using an endoscope equipped with a blue laser light that caused red fluorescence emission of photosensitizing protoporphyrin IX. Red fluorescence signal and intensity was assessed during photodynamic diagnosis procedures. Lesions were resected by endoscopic and/or laparoscopic surgery, and specimens were immunostained and assessed for the expression of ATP-binding cassette sub-family G member 2, oligopeptide transporter-1, and coproporphyrinogen oxidase. RESULTS Photodynamic diagnosis was negative in four cases (17.4%). Three cases of photodynamic diagnosis-negative lesions were signet-ring cell carcinomas, and only one case was differentiated adenocarcinoma (intestinal type). Twenty intestinal type, photodynamic diagnosis-positive lesions showed high expression of coproporphyrinogen oxidase, whereas signet-ring cell carcinomas were all negative. Oligopeptide transporter-1 immunoreactivity was significantly higher in tumors of intestinal type. ATP-binding cassette sub-family G member 2 expression tended to be higher in luminal surface tumors than in intestinal type tumors. CONCLUSION Aminolevulinic acid-mediated photodynamic diagnosis provided good detection of upper gastrointestinal tumors of intestinal type but not diffuse type tumors, such as signet-ring cell carcinomas, possibly owing to coproporphyrinogen oxidase expression.
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Affiliation(s)
- Kumi Ogihara
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hajime Isomoto
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Tottori University, Faculty of Medicine, Yonago, Japan.
| | - Hiroki Kurumi
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Tottori University, Faculty of Medicine, Yonago, Japan
| | - Tsutomu Kanda
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, Tottori University, Faculty of Medicine, Yonago, Japan
| | - Mikiko Hashisako
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazuhiro Tabata
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hiroyuki Ishii
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ken Ohnita
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Naoyuki Yamaguchi
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuko Akazawa
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kayoko Matsushima
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Fuminao Takeshima
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masaki Kunizaki
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shigekazu Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Atsushi Nanashima
- Division of Hepato-Biliary-Pancreas Surgery, University of Miyazaki, Faculty of Medicine, Miyazaki, Japan
| | - Junya Fukuoka
- Department of Pathology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takeshi Nagayasu
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazuhiko Nakao
- Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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18
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Ogihara K, Itoh T, Mizuno Y, Tamukai K, Madarame H. Disseminated Histiocytic Sarcoma in an African Hedgehog (Atelerix albiventris). J Comp Pathol 2016; 155:361-364. [PMID: 27720131 DOI: 10.1016/j.jcpa.2016.09.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 08/23/2016] [Revised: 09/02/2016] [Accepted: 09/05/2016] [Indexed: 11/17/2022]
Abstract
Disseminated histiocytic sarcoma (HS) was diagnosed on post-mortem examination of a 1.5-year-old African hedgehog (Atelerix albiventris) that was presented in poor physical condition and with diarrhoea. Leucocytosis and a hypoechoic abdominal mass were noted on haematological and ultrasonographical examinations. Gross pathological, histopathological, immunohistochemical and ultrastructural evaluation of the mass supported a diagnosis of disseminated HS. To our knowledge, this report represents the first documentation of disseminated HS in this species.
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Affiliation(s)
- K Ogihara
- Laboratory of Pathology, School of Life and Environmental Science, Japan
| | - T Itoh
- Laboratory of Small Animal Clinics, Veterinary Teaching Hospital, Azabu University, 1-17-71, Fuchinobe, Chuo, Sagamihara, Kanagawa, Japan
| | - Y Mizuno
- Laboratory of Small Animal Clinics, Veterinary Teaching Hospital, Azabu University, 1-17-71, Fuchinobe, Chuo, Sagamihara, Kanagawa, Japan
| | - K Tamukai
- Den-en-chofu Animal Hospital, 2-1-3 Denenchofu, Ota-ku, Tokyo, Japan
| | - H Madarame
- Laboratory of Small Animal Clinics, Veterinary Teaching Hospital, Azabu University, 1-17-71, Fuchinobe, Chuo, Sagamihara, Kanagawa, Japan.
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19
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Madarame H, Ogihara K, Kimura M, Nagai M, Omatsu T, Ochiai H, Mizutani T. Detection of pneumonia virus of mice in an african hedgehog (aterelix arbiventris) with suspected ‘wobbly hedgehog syndrome’. J Comp Pathol 2015. [DOI: 10.1016/j.jcpa.2014.10.192] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Tanabe A, Deguchi T, Sato T, Nemoto Y, Maruo T, Madarame H, Shida T, Naya Y, Ogihara K, Sahara H. Radioresistance of cancer stem-like cell derived from canine tumours. Vet Comp Oncol 2014; 14:e93-e101. [DOI: 10.1111/vco.12110] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 05/27/2014] [Accepted: 06/11/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. Tanabe
- Laboratory of Biology; Azabu University School of Veterinary Medicine; Chuo-ku, Sagamihara Japan
| | - T. Deguchi
- Veterinary Teaching Hospital; Azabu University; Chuo-ku, Sagamihara Japan
| | - T. Sato
- Veterinary Teaching Hospital; Azabu University; Chuo-ku, Sagamihara Japan
| | - Y. Nemoto
- Veterinary Teaching Hospital; Azabu University; Chuo-ku, Sagamihara Japan
| | - T. Maruo
- Veterinary Teaching Hospital; Azabu University; Chuo-ku, Sagamihara Japan
| | - H. Madarame
- Veterinary Teaching Hospital; Azabu University; Chuo-ku, Sagamihara Japan
| | - T. Shida
- Department of Veterinary Radiology; Azabu University School of Veterinary Medicine; Chuo-ku, Sagamihara Japan
| | - Y. Naya
- Laboratory of Pathology; Azabu University School of Life and Environmental Science; 1-17-71 Fuchinobe Chuo-ku, Sagamihara, Kanagawa Japan
| | - K. Ogihara
- Laboratory of Pathology; Azabu University School of Life and Environmental Science; 1-17-71 Fuchinobe Chuo-ku, Sagamihara, Kanagawa Japan
| | - H. Sahara
- Laboratory of Biology; Azabu University School of Veterinary Medicine; Chuo-ku, Sagamihara Japan
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21
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Fukuda Y, Takeshima F, Ogihara K, Shoji H, Akazawa Y, Tsutsumi T, Abe K, Mizuta Y, Isomoto H, Nakao K. [Successful management of liver metastasis from gastric adenosquamous carcinoma with adjuvant chemotherapy and radiofrequency ablation]. Nihon Shokakibyo Gakkai Zasshi 2012; 109:606-614. [PMID: 22481262] [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: 05/31/2023]
Abstract
A 70-year-old man was given a diagnosis of advanced type 3 gastric cancer and underwent surgery. In addition to total gastrectomy and D2 lymph node resection, partial liver resection was performed due to detection of a solitary liver metastasis which was initially overlooked on preoperative CT. Histopathologically, the tumor was diagnosed as gastric adenosquamous carcinoma (Int, INFβ, pT2 (ss), H1, ly1, v2 (mp), EVG, n (-), pPM (-), pDM (-)). Three metastasic lesions appeared in the liver on abdominal CT scan performed 3 months after the operation. The patient underwent adjuvant chemotherapy with S-1. Since enlargement of the liver metastases was observed following 2 courses of treatment, the patient received combination chemotherapy of irinotecan and cisplatin. Of 3 metastatic lesions, 1 disappeared and 2 decreased to less than 2 cm in diameter after 8 courses of 2nd line treatment. Radiofrequency ablation (RFA) was successfully performed to treat the remaining liver metastases. The patient has been free of recurrence for 41 months.
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Affiliation(s)
- Yasuhiro Fukuda
- Department of Internal Medicine, Nagasaki Municipal Medical Center.
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22
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Nakajima K, Taharaguchi S, Ogihara K, Murakami M, Une Y. Evaluation of Pathogenicity of Two Ranaviruses (RCV-JP, HNV) Isolated from the Bullfrog and a Salamander for Japanese Native Amphibians. J Comp Pathol 2012. [DOI: 10.1016/j.jcpa.2011.11.100] [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]
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23
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Kobayashi R, Kamiie J, Yasuno K, Ogihara K, Shirota K. Expression of nephrin, podocin, α-actinin-4 and α3-integrin in canine renal glomeruli. J Comp Pathol 2011; 145:220-5. [PMID: 21388638 DOI: 10.1016/j.jcpa.2011.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 12/16/2010] [Accepted: 01/13/2011] [Indexed: 10/18/2022]
Abstract
The biological features of podocytes that contribute to the pathogenesis of proteinuria have not been investigated in dogs. The aim of this study was to investigate the expression and localization of nephrin, podocin, α-actinin-4 and α3-integrin in canine renal glomeruli. Renal cortical tissue was collected from the kidneys of five normal adult beagles. Western blotting and immunofluorescence microscopy revealed specific expression and localization of the four proteins in canine glomeruli. Expression of genes encoding the four molecules in isolated glomeruli was detected by reverse transcriptase polymerase chain reaction. The results of this study will permit future exploration of podocyte injury and its involvement in protein leakage from the capillary wall in canine glomerular diseases.
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Affiliation(s)
- R Kobayashi
- Research Institute of Biosciences, Azabu University, Fuchinobe 1-17-71, Chuo, Sagamihara, Kanagawa 252-5201, Japan
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Une Y, Nakajima K, Taharaguchi S, Ogihara K, Murakami M. Ranavirus Infection Outbreak in the Salamander (Hynobius Nebulosus) in Japan. J Comp Pathol 2009. [DOI: 10.1016/j.jcpa.2009.08.133] [Citation(s) in RCA: 4] [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: 10/20/2022]
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25
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Kamiie J, Yasuno K, Ogihara K, Nakamura A, Tamahara S, Fujino Y, Ono K, Shirota K. Collagenofibrotic Glomerulonephropathy with Fibronectin Deposition in a Dog. Vet Pathol 2009; 46:688-92. [DOI: 10.1354/vp.08-vp-0272-s-cr] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report herein a case of collagenofibrotic glomerulonephropathy in a 3-year-old Shiba Inu with severe proteinuria. Histologically, renal glomeruli were enlarged with massive deposition of a homogeneous eosinophilic substance within the mesangium and capillary walls. The deposits reacted weakly with periodic acid-Schiff, stained deep blue with Masson's trichrome, and were positive by immunofluorescence for type III collagen and fibronectin. Ultrastructurally, the deposits consisted of fibrils and amorphous material in the mesangial matrix and beneath the glomerular capillary endothelium. The fibrils had transverse bands analogous to those of collagen fibrils. Electron microscopy also revealed focal detachment of podocytes and foot process effacement in glomerular tufts, which suggested that podocyte injury had contributed to the development of proteinuria in this dog. The current case resembles collagenofibrotic glomerulonephropathy (CFGN) in humans in histopathologic, immunofluorescence, and electron microscopic findings. This is the first report of CFGN in a nonhuman species with glomerular deposition of fibronectin and type III collagen.
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Affiliation(s)
- J. Kamiie
- Laboratory of Veterinary Pathology, Azabu University, Sagamihara, Kanagawa
| | - K. Yasuno
- Research Institute of Biosciences, Azabu University, Sagamihara, Kanagawa
| | - K. Ogihara
- Laboratory of Environmental Pathology, Azabu University, Sagamihara, Kanagawa
| | - A. Nakamura
- Laboratory of Veterinary Clinical Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - S. Tamahara
- Laboratory of Veterinary Clinical Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Y. Fujino
- Laboratory of Veterinary Clinical Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - K. Ono
- Laboratory of Veterinary Clinical Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - K. Shirota
- Laboratory of Veterinary Pathology, Azabu University, Sagamihara, Kanagawa
- Research Institute of Biosciences, Azabu University, Sagamihara, Kanagawa
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Lee JY, Tanabe S, Shimohira H, Kobayashi Y, Oomachi T, Azuma S, Ogihara K, Inokuma H. Expression of cyclooxygenase-2, P-glycoprotein and multi-drug resistance-associated protein in canine transitional cell carcinoma. Res Vet Sci 2007; 83:210-6. [PMID: 17316722 DOI: 10.1016/j.rvsc.2006.12.012] [Citation(s) in RCA: 25] [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] [Received: 04/21/2006] [Revised: 11/20/2006] [Accepted: 12/17/2006] [Indexed: 12/31/2022]
Abstract
Cyclooxygenase-2 (COX-2), P-glycoprotein (P-gp) and multi-drug resistance-associated protein (MRP) are considered important tumor-associated proteins in humans and dogs. In the present study, we immunohistochemically evaluated the expression of these proteins in canine patients with transitional cell carcinoma (TCC). Of 52 cases, 30 (57.7%) were positive for COX-2, 40 (76.9%) for P-gp, and only 10 (19.2%) for MRP. In addition, 27 samples (27/52, 51.9%) were positive for two markers, while 3 (5.7%) and 5 (9.6%) cases were positive and negative, respectively, for all three markers. No significant correlations were seen for COX-2 and P-gp on Fisher's exact test and Mann-Whitney's test, but a significance was seen on Spearman's rank correlation analysis using the IHC scoring system (P=0.043). These results suggest that P-gp expression is induced by overexpression of COX-2 in canine patients with TCC.
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Affiliation(s)
- J-Y Lee
- Department of Clinical Veterinary Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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27
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Horigane M, Ogihara K, Nakajima Y, Shinoda T, Taylor D. Cloning and expression of the ecdysteroid receptor during ecdysis and reproduction in females of the soft tick, Ornithodoros moubata (Acari: Argasidae). Insect Mol Biol 2007; 16:601-12. [PMID: 17894558 DOI: 10.1111/j.1365-2583.2007.00754.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Molecular mechanisms of ecdysteroid regulation in development and reproduction have been thoroughly investigated in Diptera and Lepidoptera, but few studies report the molecular actions of ecdysteroids in hemimetabolous insects and more primitive arthropods. Ecdysteroids appear to be the main hormones regulating development and vitellogenesis in ticks. An ecdysteroid receptor that showed high homology with EcRs of other arthropods was isolated from Ornithodoros moubata (OmEcRA). OmEcR expression patterns coincided with ecdysteroid titres in the haemolymph during moulting and vitellogenesis and differed between mated and virgin females. Therefore, OmEcR appears to mediate the regulation of moulting and vitellogenesis by ecdysteroids in O. moubata females as seen in other arthropods.
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Affiliation(s)
- M Horigane
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, Japan
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Madarame H, Itoh A, Hirose M, Ogihara K. Spontaneous extraskeletal osteosarcomas of the subcutis in Djungarian hamsters (Phodopus sungorus): report of two cases. ACTA ACUST UNITED AC 2004; 51:232-6. [PMID: 15315702 DOI: 10.1111/j.1439-0442.2004.00635.x] [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] [Indexed: 11/30/2022]
Abstract
Spontaneous subcutaneous extraskeletal osteosarcoma was diagnosed in the subcutaneous tissue of two Djungarian hamsters. Histologically, the tumour was characterized by multiple nests of osseous and cartilaginous components within a proliferation of pleomorphic cells. No abnormality was observed in any skeletal bones and no change suggesting tumorous growth was observed in any other sites. This is the first report of extraskeletal osteosarcomas in Djungarian hamsters.
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Affiliation(s)
- H Madarame
- Veterinary Teaching Hospital, School of Veterinary Medicine, Azabu University, Sagamihara-shi, Kanagawa-ken 229-8501, Japan.
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29
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Abstract
The aim of this study was to investigate the relation between clenching strength and occlusal force distribution in primary dentition. Twenty healthy children with normal occlusions: 11 boys and 9 girls, ages 3.2-5.8 years (avg. 4.5 years) were selected. Setting the bilateral masseter muscular activity at maximum clenching in full intercuspation as 100%, the occluding forces at 20, 40, 60, 80 and 100% clenching were recorded with pressure-sensitive sheets (Dental Prescale 50H, type R, Fuji Photo Film Co.), and the force of each primary tooth was analysed by computer (Occluzer FPD703). Occlusal force distribution was expressed as a percentage of the total occlusal force of each tooth and was compared between each clenching. There were no significant differences between various clenching strengths in the occlusal force distribution in primary dentition [one-way repeated-measures analysis of variance (ANOVA)]. Thus, the results of the present study suggest that the distribution of occluding forces on a primary dental arch had its own pattern and that the clenching strength had no effect on that pattern. These patterns may be useful in determining occlusal function in children.
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Affiliation(s)
- H Karibe
- Department of Paediatric Dentistry, Nippon Dental University, Tokyo, Japan.
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30
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Zubkov AY, Tibbs RE, Clower B, Ogihara K, Aoki K, Zhang JH. Apoptosis in basilar endothelial cells in a canine double hemorrhage model. Acta Neurochir Suppl 2002; 77:29-31. [PMID: 11563303 DOI: 10.1007/978-3-7091-6232-3_7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- A Y Zubkov
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, USA
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31
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Abstract
OBJECT Myonecrosis in the tunica media, which is defined morphologically, is one of the most striking alterations in the cerebral arterial wall following subarachnoid hemorrhage (SAH). In this study, oxyhemoglobin (OxyHb) was added to cultured rat aortic smooth muscle cells to determine the pattern of cell death by morphological and biochemical techniques. METHODS Confluent rat aortic smooth muscle cells were treated with OxyHb in a concentration- and time-dependent manner. Cell density was assayed by counting the number of cells that attached to the culture dishes after exposed to OxyHb. To identify cell death pattern, DNA analysis, electron microscopy, and Western blotting using poly (ADP-ribose) polymerase (PARP) antibody were performed. CONCLUSIONS OxyHb decreased cell density in a concentration- and time-dependent manner. DNA analysis showed a smear pattern characteristic of cell necrosis. Transmission electron microscopy demonstrated disintegration of cell membrane and destruction of cell organelles. No apoptotic changes, such as condensation of chromatin or apoptotic bodies were observed. Western blotting using PARP antibody revealed that 116 kDa PARP was not cleaved to 85 kDa, an apoptosis-related fragment. These results demonstrated morphologically and biochemically that OxyHb induced necrosis, not apoptosis, in cultured smooth muscle cells.
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Affiliation(s)
- K Ogihara
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi
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32
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Zubkov AY, Ogihara K, Patllola A, Parent AD, Zhang J. Mitogen-activated protein kinase plays an important role in hemolysate-induced contraction in rabbit basilar artery. Acta Neurochir Suppl 2001; 76:217-21. [PMID: 11450011 DOI: 10.1007/978-3-7091-6346-7_44] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECT Mitogen-activated protein kinase (MAPK) is an important signaling factor in the vascular proliferation and contraction, the two features of cerebral vasospasm following subarachnoid hemorrhage. We studied the possible involvement of MAPK in hemolysate-induced signal transduction and contraction in rabbit basilar artery. METHODS Isometric tension was used to record the contractile response of rabbit basilar artery to hemolysate. Western blots using antibodies for MAPK were conducted. 1) Hemolysate produced a concentration-dependent contraction of rabbit basilar artery. Pre-incubation of arteries with MAPK kinase inhibitor PD-98059 markedly reduced the contraction induced by hemolysate. PD-98059 also relaxed, in a concentration-dependent fashion, the sustained contraction induced by hemolysate (10%). 2) Hemolysate produced a time-dependent elevation of MAPK immunoreactivity in Western blot in rabbit basilar artery. MAPK was enhanced 3 min after hemolysate exposure and the effect reached maximum at 5 min. The immunoreactivity of MAPK decayed slowly with time, but the level of MAPK was still higher than the basal level even at two hours after exposure to hemolysate. 3) Pre-incubation of arteries with MAPK kinase inhibitor PD-98059 abolished the effect of hemolysate on MAPK immunoreactivity. CONCLUSION Hemolysate produced contraction of rabbit basilar artery possibly by activation of MAPK. MAPK inhibitors may be useful in the treatment of cerebral vasospasm.
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Affiliation(s)
- A Y Zubkov
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, USA
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Patlolla A, Ogihara K, Zubkov A, Aoki K, Parent AD, Zhang JH. Role of tyrosine kinase in fibroblast compaction and cerebral vasospasm. Acta Neurochir Suppl 2001; 76:227-30. [PMID: 11450013 DOI: 10.1007/978-3-7091-6346-7_46] [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] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Hemolysate, a proposed causative agent for cerebral vasospasm following subarachnoid hemorrhage, produces contraction of cerebral arteries by activation of tyrosine kinases. In addition, hemolysate accelerates fibroblast collagen compaction that could play a role in cerebral vasospasm. We studied the effect of hemolysate on tyrosine phosphorylation and fibroblast collagen compaction in cultured dog cerebral and human dermal fibroblasts using tyrosine kinase inhibitors and tyrosine antibodies (Western blot). 1) Hemolysate was found to enhance tyrosine phosphorylation of two proteins approximately 64 and 120 kDa. The effect of hemolysate was time- and concentration-dependent. 2) Two main components in hemolysate, oxyhemoglobin and adenosine triphosphate (ATP), produced similar results to that of hemolysate. 3) Tyrosine kinase inhibitor genistein and tyrphostin A51 (30 microM) markedly reduced the effect of hemolysate on tyrosine phosphorylation. 4) In another study, hemolysate increased fibroblast collagen compaction and the effect of hemolysate was reduced by genistein and tyrphostin A51. We conclude that hemolysate activates tyrosine kinase that may lead to acceleration of fibroblast compaction. This effect of hemolysate may contribute to cerebral vasospasm.
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Affiliation(s)
- A Patlolla
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, USA
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34
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Abstract
Confluent rat aortic smooth muscle cells were treated with OxyHb in a concentration- and time-dependent manner. A high concentration of OxyHb (100 microM) within 24 h decreased cell density. DNA analysis showed a smear pattern characteristic of cell necrosis. Transmission electron microscopy demonstrated disintegration of the cell membrane and destruction of cell organelles. Western blotting using PARP antibody revealed that 116 kDa PARP was not cleaved to 85 kDa, an apoptosis-related fragment. On the contrary, a low concentration of OxyHb (10 microM) produced apoptotic cell death at 72 h that was supported by DNA analysis and TUNEL staining. These results demonstrated that a high level of OxyHb induced necrosis within 24 h and a low concentration of OxyHb produced apoptosis after 72 h in cultured smooth muscle cells. Morphological alterations induced by OxyHb might contribute to the vascular wall changes in the cerebral arteries following subarachnoid hemorrhage (SAH).
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Affiliation(s)
- K Ogihara
- Department of Neurosurgery, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216, USA
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35
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Abstract
Spontaneous hydronephrosis in KK-A(Y) mice was studied using light and electron microscopy and scanning electron microscopy of resin casts to evaluate micro vascular changes in the kidney. The renal parenchyma was extremely thin as a result of tubular atrophy. Histologically, varying degrees of glomerulosclerosis were observed. Ultrastructurally, marked thickenings of the glomerular basal lamina, an increase in mesangial cells and matrix, and marked effacement of foot processes were observed. In resin casts, a marked reduction in number of glomeruli was evident. The capillaries were thin, strangulated and tom-off to varying degrees in severely affected glomeruli. In the medulla, the three-dimensional capillary network running along the tubules was lost and changed to a two-dimensional vascular bed. Despite severe hydronephrosis, the glomerular capillary network was relatively well preserved, being either slightly or moderately injured in approximately 60% of surviving glomeruli.
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Affiliation(s)
- H Ninomiya
- Department of Laboratory Animal Science, Azabu University, Sagamihara, Japan
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36
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Ogihara K, Barnanke DH, Zubkov AY, Parent AD, Zhang JH. Effect of endothelin receptor antagonists on non-muscle matrix compaction in a cell culture vasospasm model. Neurol Res 2000; 22:209-14. [PMID: 10763512 DOI: 10.1080/01616412.2000.11741063] [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: 10/21/2022]
Abstract
Endothelin-1 (ET-1), a potent vascular smooth muscle constrictor, is one of the possible spasmogens in cerebral vasospasm. However, the role of ET-1 in non-muscle compaction (another aspect of the pathogenesis of cerebral vasospasm) has not been reported. This study was undertaken to demonstrate the effect of ET-1, as well as erythrocyte lysate and bloody cerebrospinal fluid (CSF), on fibroblast populated collagen lattice (FPCL) compaction. Human dermal fibroblasts were used to form FPCL. The concentration-dependent effect of ET-1 was examined in the absence and presence of an ETA receptor antagonist (BQ-485), or an ETB receptor antagonist (BQ-788), or both. FPCL compaction was determined by measuring reduction of areas over five days following treatment. To compare the effect of ET-1 on lattice compaction, erythrocyte lysate and bloody CSF obtained from a cerebral vasospasm patient were also tested. We found that ET-1 increased FPCL compaction in a concentration-dependent (but not time-dependent) manner. Erythrocyte lysate produced the strongest compaction, however, without time-dependence. Bloody CSF promoted FPCL compaction in a time-dependent fashion. Compaction induced by ET-1 was inhibited by BQ-485 but not by BQ-788. We concluded that ET-1 promotes FPCL compaction by activation of ETA receptors. Other components in bloody CSF or erythrocytes may also contribute to FPCL compaction.
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Affiliation(s)
- K Ogihara
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson 39216, USA
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37
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Abstract
BACKGROUND Cerebral vasospasm after subarachnoid hemorrhage is a prolonged contraction that leads to cerebral ischemia or infarction. Morphological studies of cerebral arteries during vasospasm have shown extensive necrosis of smooth-muscle cells and desquamation and dystrophy of endothelial cells. The mechanism of cellular death is unknown. METHODS We report an observation of apoptotic changes in the cerebral arteries of a patient who died after suffering severe cerebral vasospasm caused by aneurysmal rupture. Subarachnoid hemorrhage and cerebral vasospasm were confirmed by computed tomography scanning and angiogram. Histological and immunohistological examinations for apoptosis were performed in cerebral arteries. For control, the arteries from another patient, who died of trauma without head injury, were used. RESULTS Corrugation of the internal elastic lamina and increased amounts of connective tissue was demonstrated by light microscopy. Apoptotic changes, characterized by condensation of chromatin of the nucleus and detachment from the basal membrane, were found on transmission electron microscopy in endothelial cells. Terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end labeling reaction revealed positive staining of the nuclei of the endothelial cells. CONCLUSIONS This study demonstrates that apoptosis occurred in the cerebral arteries in a patient who died of cerebral vasospasm. The possible role of apoptosis in cerebral vasospasm is discussed.
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Affiliation(s)
- A Y Zubkov
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA
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38
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Patlolla A, Ogihara K, Aoki K, Zubkov A, Bengten E, Parent AD, Zhang JH. Hemolysate induces tyrosine phosphorylation and collagen-lattice compaction in cultured fibroblasts. Biochem Biophys Res Commun 1999; 264:100-7. [PMID: 10527848 DOI: 10.1006/bbrc.1999.1383] [Citation(s) in RCA: 16] [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: 11/22/2022]
Abstract
Hemolysate, a proposed causative agent for cerebral vasospasm after subarachnoid hemorrhage, produces contraction of cerebral arteries by activation of tyrosine kinases. In addition, hemolysate increases fibroblast-collagen compaction that could play a role in cerebral vasospasm. We studied the effect of hemolysate on tyrosine phosphorylation and fibroblast-collagen compaction in cultured canine basilar and human dermal fibroblasts using tyrosine kinase inhibitors and tyrosine antibodies. Hemolysate enhanced tyrosine phosphorylation of two proteins, 64 and 120 kDa, in cultured canine basilar artery and human dermal fibroblast cells. The effect of hemolysate was time-dependent and concentration-dependent. Oxyhemoglobin and ATP, the two major components of hemolysate, produced similar tyrosine phosphorylation, however, with a different time course. Tyrosine kinase inhibitors genistein and tyrphostin A51 abolished the effect of hemolysate in both cerebral and dermal fibroblasts. Hemolysate increased fibroblast-populated collagen-lattice compaction and tyrosine kinase inhibitors genistein and tyrphostin A51 attenuated the effect of hemolysate. We conclude that hemolysate activates tyrosine kinase that leads to the increase of fibroblast compaction. This effect of hemolysate may contribute to cerebral vasospasm.
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Affiliation(s)
- A Patlolla
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, 39216, USA
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Kishikawa S, Shan L, Ogihara K, Utsunomiya H, Nakamura M, Nakamura Y, Naito A, Kakudo K. Overexpression and genetic abnormality of p53 in parathyroid adenomas. Pathol Int 1999; 49:853-7. [PMID: 10571817 DOI: 10.1046/j.1440-1827.1999.00961.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 11/20/2022]
Abstract
To study the significance of p53 abnormality in parathyroid tumors, 32 parathyroid adenomas and 22 hyperplastic glands from 14 cases of secondary hyperparathyroidism were analysed using immunohistochemistry, polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), single-strand conformation polymorphism (SSCP) and DNA sequencing. Immunohistochemical study revealed p53 overexpression in four parathyroid adenomas, of which two showed diffuse and one showed focal nuclear pleomorphism. Genetic analysis disclosed allelic loss in one, and a point mutation (R290H) and a polymorphism (L257 L) in another of the two other adenomas with diffuse nuclear pleomorphism. No abnormalities were discovered in the other two adenomas, although one had a R72P polymorphism in exon 4. There was no evidence of malignancy of the four tumors in either clinical or pathological terms. None of the 22 hyperplastic glands showed p53 overexpression. These results demonstrate that p53 abnormality can occur in benign parathyroid adenomas and is more prevalent in those with nuclear pleomorphism than in those without.
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Affiliation(s)
- S Kishikawa
- Department of Environmental Pathology, Azabu University, Kanagawa, Japan
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40
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Abstract
OBJECT Oxyhemoglobin (OxyHb) is one of the most important spasmogens for cerebral vasospasm that follows aneurysmal subarachnoid hemorrhage. The cytotoxic effect of OxyHb has been documented in endothelial and smooth-muscle cells; however, the pattern of cell death--necrosis or apoptosis--as the final stage of cell damage has not been demonstrated. This study was undertaken to determine if OxyHb induces apoptotic changes in cultured bovine aortic endothelial cells. METHODS Confluent bovine aortic endothelial cells were treated with OxyHb in a concentration- and time-dependent manner. Cell density was assayed by counting the number of cells that attached to culture dishes after exposure to OxyHb. To identify apoptotic changes, the investigators used three specific methods: DNA fragmentation (electrophoreses), the apoptotic body (transmission electron microscopy), and cleavage of poly (adenosine diphosphate ribose) polymerase (PARP [Western blotting]). CONCLUSIONS Oxyhemoglobin decreased cell density in a concentration- and time-dependent manner. Analysis of DNA showed a pattern of internucleosomal cleavage characteristic of apoptosis (DNA ladder). Transmission electron microscopy demonstrated condensation of nuclei and apoptotic bodies in OxyHb-treated endothelial cells. Western blotting with the PARP antibody revealed that the 116-kD PARP was cleaved to the 85-kD apoptosis-related fragment. These results for the first time demonstrated that the OxyHb induces apoptosis in cultured endothelial cells.
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MESH Headings
- Animals
- Aorta
- Apoptosis/drug effects
- Blotting, Western
- Cattle
- Cell Count/drug effects
- Cell Death/physiology
- Cell Nucleus/drug effects
- Cells, Cultured
- Clone Cells
- DNA Fragmentation
- Dose-Response Relationship, Drug
- Electrophoresis, Agar Gel
- Electrophoresis, Polyacrylamide Gel
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/physiopathology
- Intracranial Aneurysm/complications
- Ischemic Attack, Transient/etiology
- Ischemic Attack, Transient/physiopathology
- Luminescent Measurements
- Microscopy, Electron
- Muscle, Smooth, Vascular/physiopathology
- Necrosis
- Nucleosomes/drug effects
- Oxyhemoglobins/administration & dosage
- Oxyhemoglobins/pharmacology
- Oxyhemoglobins/physiology
- Poly(ADP-ribose) Polymerases/drug effects
- Subarachnoid Hemorrhage/complications
- Time Factors
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Affiliation(s)
- K Ogihara
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson 39216, USA
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41
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Abstract
The pathogenesis of cerebral vasospasm that follows aneurysmal subarachnoid hemorrhage (SAH) is poorly understood. Multiple methods have been used to clarify the mechanism of spasmogen-induced vasospasm, however, each method has its own limitations. Cultured cells lose their phenotype and inter-cellular interactions, and animal models are expensive and can be used only in some established centers. Isolated cerebral arteries have been used extensively to study the contractility by transient exposure to spasmogens that, however, can hardly represent cerebral vasospasm that occurs 2-4 days after SAH. In this study, we cultured arteries with bloody cerebrospinal fluid (CSF) from patients of cerebral vasospasm and studied the contractility of the arteries 1, 3 and 4 days later. This method preserves artery wall structure, prolongs exposure of artery to bloody CSF, and is simple and inexpensive. Cultured rat aorta showed enhanced contractile response to 5-HT (p < 0.001) but reduced response to KCl (p < 0.05) 4 days after culturing with bloody CSF. We concluded that the contractility of arteries was modified by prolonged incubation with bloody CSF. Our observations in this study could be important and may explain some aspects of pathogenesis of cerebral vasospasm.
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Affiliation(s)
- A Y Zubkov
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson 39216, USA
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42
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Zubkov AY, Ogihara K, Tumu P, Patlolla A, Lewis AI, Parent AD, Zhang J. Mitogen-activated protein kinase mediation of hemolysate-induced contraction in rabbit basilar artery. J Neurosurg 1999; 90:1091-7. [PMID: 10350257 DOI: 10.3171/jns.1999.90.6.1091] [Citation(s) in RCA: 39] [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: 11/06/2022]
Abstract
OBJECT Mitogen-activated protein kinase (MAPK) is an important signaling factor in vascular proliferation and contraction, which are the two features of cerebral vasospasm that follow subarachnoid hemorrhage. The authors studied the possible involvement of MAPK in hemolysate-induced signal transduction and contraction in rabbit basilar artery (BA). METHODS Isometric tension was used to record the contractile response of rabbit BA to hemolysate, and Western blots were obtained using antibodies for MAPK. The following results are reported. 1) Hemolysate produced a concentration-dependent contraction of rabbit BA; however, preincubation of arteries with the MAPK kinase (MEK) inhibitor PD-98059 markedly reduced this contraction. The administration of PD-98059 also relaxed, in a concentration-dependent fashion, the sustained contraction induced by 10% hemolysate. 2) The Janus tyrosine kinase 2 inhibitor AG-490, preincubated with arterial rings, reduced the contractile response to hemolysate but failed to relax the sustained contraction induced by this agent. The Src-tyrosine kinase inhibitor damnacanthal and the phosphatidylinositol 3-kinase inhibitor wortmannin failed to reduce hemolysate-induced contraction. 3) Hemolysate produced a time-dependent elevation of MAPK immunoreactivity as seen on Western blots of rabbit BA. The MAPK was enhanced 1 minute after hemolysate exposure and the effect reached maximum levels at 5 minutes. The immunoreactivity of MAPK decayed slowly over time, but the level of this kinase was still higher than the basal level, even at 2 hours after exposure to hemolysate. Preincubation of arteries with the MEK inhibitor PD-98059 abolished the effect of hemolysate on MAPK immunoreactivity. CONCLUSIONS Hemolysate produced contraction of rabbit BA, possibly by activation of MAPK, and therefore MAPK inhibitors may be useful in the treatment of cerebral vasospasm.
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Affiliation(s)
- A Y Zubkov
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson 39216-4505, USA.
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43
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Abstract
A case of unruptured bilateral large carotid-ophthalmic aneurysms, which appear to be adjoining and "kissing" each other when visualized by three-dimensional computed tomographic angiography (3-D CTA), is reported. Although bilateral carotid-ophthalmic aneurysms are not rare, bilateral large ones are quite rare, and direct imaging of "kissing aneurysms" of this portion has not been reported. Since 3-D CTA is becoming a useful tool for the diagnosis of cerebral aneurysms, we propose that these and similar bilateral large carotid-ophthalmic aneurysms are good candidates for the term "kissing aneurysms".
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Affiliation(s)
- I Date
- Department of Neurological Surgery, Okayama University Medical School, Japan
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44
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Ogihara K, Nakahara R, Koyanagi S, Suda M. Treatment of a Brodie bite by lower lateral expansion: a case report and fourth year follow-up. J Clin Pediatr Dent 1999; 23:17-21. [PMID: 10023228] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
The patient was a 4 year 4 month old boy at the first visit. The chief complaint was chewing dysfunction. The intra-oral and facial films, study casts, cephalometrics, muscle-balance monitor, temporomandibular joint radiographs were analyzed. The patient presented with a Brodie bite or unilateral posterior cross bite. The upper dental arch was wider than other children of his age. The lower dental arch was significantly smaller than the upper dental arch. The lower dental arch was expanded using a Schwarz appliance. The period of treatment was one year and two months. The period of observation was four years and ten months. First the patient underwent chewing training and secondarily then was treated by lateral expansion. After this treatment the patient achieved good occlusion and muscle function, while the morphology and function of the temporomandibular joints were improved, as well.
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Affiliation(s)
- K Ogihara
- Department of Pediatric Dentistry, Nippon Dental University at Tokyo, Japan
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45
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Abstract
We determined the 4251-bp sequence of open reading frame 2 (ORF2) of canine LINE-1 retroposon that encodes 1275 amino acids. The truncated LINE-1 inserts associated with transmissible venereal tumor (TVT) of dogs contained the 1378-bp LINE-1 insert (TVT-LINE) flanked by 10-bp direct repeats upstream to c-myc gene. The TVT-LINE elements were composed of 416 bp inverse sequences homologous to the complementary strand of the LINE-1, a 5-bp deletion and 962-bp sequences homologous to the 3' region of the LINE-1.
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Affiliation(s)
- Y Choi
- Department of Veterinary Public Health, Obihiro University of Agriculture and Veterinary Medicine, Japan
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46
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Abstract
Uropathy associated with hydronephrosis was observed frequently in our male KK-Ay mouse colony during a long-term study of diabetes. The lesion occurred in 24 of the 31 KK-Ay male mice and accounted for the greatest number of spontaneous deaths among them. It was observed after 4 months of age and involved about hard plugs of altered seminal material resembling the seminal vesicle secretion. The plugs became impacted in the urethral bulb and the bladder. The penile anatomy, with its flexure, pressure on the urethra from the bulbocavernosus muscle, and the characteristic ability of the seminal fluid to easily coagulate to form the vaginal plug may have contributed to the lesion. Correlation between development of the uropathy and diabetes has not been established.
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Affiliation(s)
- H Ninomiya
- Department of Laboratory Animal Science, Azabu University, Sagamihara, Japan
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47
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Abstract
Cell-maceration/scanning electron microscopy, serial sections and scanning electron microscopy of vascular resin casts were employed to demonstrate the arrangement of collagen fibers in the terminal hepatic venules, involving the central, intercalated and collecting veins in dog liver. In cell-maceration specimens, each collagen fiber was observed to run in various directions, forming a sheath with a compact meshwork of collagen fibers. The collagenous meshwork in the hepatic venules was looser than those of the terminal portal venules and hepatic arterioles. Some collagen fibers formed bundles with an elongated spiral arrangement encircling the wall of the terminal hepatic venules. In resin casts, these venules were observed as a twisted configuration caused by spiral collagen bundles. A helical modification of such connective tissue bundles might provide a mechanically stable vascular structure and permit reversible changes in linear and circumferential vascular dimensions at the terminal tributaries of veins. Round or oval pores with diameters of approximately 9 microns were also observed in the sheath of collagen fibers. These pores, together with the relatively loose collagenous meshwork in the hepatic venules, might play a role in lymphocyte migration from these venules into the surrounding tissue and provide high permeability to the venule walls. No such helical configuration and pores were observed in either the portal venules or the hepatic arterioles.
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Affiliation(s)
- H Ninomiya
- Department of Laboratory Animal Science, Azabu University, Kanagawa, Japan
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48
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Ninomiya H, Inomata T, Ogihara K. Glomerular vascular changes in KK-Ay mice with early diabetes: scanning electron microscopy of vascular resin casts. J Vet Med Sci 1998; 60:103-6. [PMID: 9492368 DOI: 10.1292/jvms.60.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Vascular changes, the angioarchitecture of renal glomerular fine vessels in early diabetic KK-Ay mice of 4 months of age were examined by scanning electron microscopy of corrosion casts. Histologically, enlargement of glomeruli and dilation of glomerular capillaries were found. In resin cast specimens, glomeruli with diabetes were larger than normal, and an increase in diameter of the glomerular vessels was found in diabetic mice. No capillary proliferation, distortion of glomerular vessels and destruction of glomerular capillary loops were found in diabetic mice. The increased vascular diameter may explain the increase in blood flow in the glomeruli, affecting kidney function in early diabetes.
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Affiliation(s)
- H Ninomiya
- Department of Laboratory Animal Science, Research Institute of Biosciences, Azabu University, Sagamihara, Kanagawa, Japan
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49
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Ono S, Date I, Nakajima M, Onoda K, Ogihara K, Shiota T, Asari S, Ninomiya Y, Yabuno N, Ohmoto T. Three-dimensional analysis of vasospastic major cerebral arteries in rats with the corrosion cast technique. Stroke 1997; 28:1631-7; discussion 1638. [PMID: 9259761 DOI: 10.1161/01.str.28.8.1631] [Citation(s) in RCA: 28] [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: 02/05/2023]
Abstract
BACKGROUND AND PURPOSE Although mice, rats, and other small animals are commonly used for molecular biology research, their use in the evaluation of cerebral vasospasm after subarachnoid hemorrhage is somewhat problematic because of the correspondingly small size of their cerebral vessels. We have already reported that the corrosion cast technique was useful for evaluating newly formed cerebral vessels in neural grafts in these small animals. In the present study we applied the corrosion cast technique to the evaluation of hemolysate-induced cerebral vasospasm in rats and performed three-dimensional analysis for comparison. The casting was done 10 minutes after the hemolysate injection, so that only acute "vasospasm" was assessed. METHODS After withdrawal of 0.1 mL cerebrospinal fluid, 0.2 mL hemolysate (n = 9) or saline (n = 10) was injected into the cisterna magna of male Sprague-Dawley rats weighing between 300 and 350 g. Ten minutes later, perfusion of a semipolymerized casting medium was performed at an injection pressure of 100 to 120 mm Hg. The brains were immersed and corroded in 10% NaOH solution. After these procedures, the basilar artery as well as peripheral vessels was analyzed morphologically with scanning electron microscopy. Conventional histological analysis with the use of paraffin-embedded section with hematoxylin-eosin staining was also performed, and the results were compared with those for the corrosion cast methods. RESULTS In the saline-injected group, SEM showed that the inner surface of the basilar artery was smooth and the form of the endothelial cell was printed on the surface of the cast. In the hemolysate-injected group, the basilar artery showed an apparent vasospasm over its entire length, and corrugation was observed on the inner surface of the basilar artery in a three-dimensional fashion. Higher magnification revealed that the nuclei of the endothelial cells were distorted. Local narrowing of the basilar artery and vasospasm in the arteries of the anterior circulation and in peripheral arteries were also observed. Measurement of the inner diameter of the basilar artery showed 37.8% contraction in the hemolysate-injected group compared with the saline-injected group by the corrosion cast method. This degree of vasospasm was similar to that observed by the conventional histological method. CONCLUSIONS In this report we show that detailed three-dimensional observation in the rat can be performed qualitatively and quantitatively with the corrosion cast technique. We conclude that this method derives an accurate measurement of the diameter of rat major cerebral arteries and is more reliable for analyzing vasospasm in rats than angiography and other conventional procedures.
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Affiliation(s)
- S Ono
- Department of Neurological Surgery, University Medical School, Japan
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50
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Onoda K, Ono S, Ogihara K, Shiota T, Asari S, Ohmoto T, Ninomiya Y. Role of extracellular matrix in experimental vasospasm. Inhibitory effect of antisense oligonucleotide on collagen induction. Stroke 1996; 27:2102-8; discussion 2108-9. [PMID: 8898823 DOI: 10.1161/01.str.27.11.2102] [Citation(s) in RCA: 16] [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: 02/02/2023]
Abstract
BACKGROUND AND PURPOSE Although it has been suggested that collagen plays a role in the pathogenesis of cerebral vasospasm after subarachnoid hemorrhage, there has been no constructive research to prove it directly. In this study we stopped the transcription of the procollagen type I gene by introducing antisense oligonucleotides for its mRNA in a rat femoral artery model of vasospasm induced by blood and assayed the changes in the vasoconstrictive activity of the vessel and expression of the procollagen mRNA. METHODS We applied antisense, sense, or missense oligonucleotides, located at the carboxyl propeptide region for alpha 1(I) procollagen mRNA, onto the femoral artery in a rat femoral artery model of vasospasm. The diameter of the artery was measured by angiography. The transcription level of the procollagen gene in the arterial tissue was assayed by use of reverse transcription-polymerase chain reaction. Morphological change in the artery was observed with aldehyde-fuchsin-Masson-Goldner staining. RESULTS In the model, when the artery was exposed to antisense oligonucleotides in pluronic gel for 5 days to prevent arterial contraction, the contraction was inhibited at a significant level (76.0% +/- 5.6) when compared with that in control experiments using sense oligonucleotides (64.0% +/- 2.4), missense oligonucleotides (63.5% +/- 3.5), or gel alone (62.1% +/- 5.8). The application of antisense oligonucleotide resulted in a marked decrease in alpha 1(I) procollagen mRNA expression as determined by polymerase chain reaction, indicating that the collagen reduction by antisense oligonucleotides occurred at the transcription level. Histological staining suggested that collagen accumulation at the site in the artery where antisense oligonucleotide had been administered was indeed less than that in the control artery. CONCLUSIONS The results indicate that the induction of procollagen type 1 could cause pathogenesis of the arterial contraction induced by blood in a rat femoral vasospasm model.
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Affiliation(s)
- K Onoda
- Department of Neurological Surgery, Okayama University Medical School, Japan
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