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Tanabe T, Tsukuda G, Hobo T, Yokoyama N, Inoue H. Abdominal compartment syndrome as a complication of endoscopic carbon dioxide insufflation in a patient with malignant bowel obstruction: a case report. Surg Case Rep 2023; 9:203. [PMID: 37987864 PMCID: PMC10663415 DOI: 10.1186/s40792-023-01783-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND A self-expandable metal stent is often placed as a bridge to elective surgical treatment of left-sided malignant obstruction of the colon because it allows for primary anastomosis without the need for a temporary stoma, which has a positive impact on the patient's quality of life. However, although a relatively safe procedure, colonic stenting can have complications that require emergency surgery. This case report describes a rare case of abdominal compartment syndrome that occurred as a complication of endoscopic insufflation during colonic stenting. CASE PRESENTATION The patient was a 72-year-old woman who presented complaining of several days of constipation and loss of appetite. Computed tomography of the abdomen revealed obstruction of the sigmoid colon by a tumor. There were no symptoms or computed tomography findings to suggest perforation. Therefore, an attempt was made to insert a self-expandable metal stent. Acute respiratory disturbance and a change in consciousness occurred during the stenting procedure, with marked abdominal distention. Abdominal compartment syndrome was diagnosed and treated by decompressive laparotomy. CONCLUSIONS To the best of our knowledge, this is the first reported case of abdominal compartment syndrome as a complication of endoscopic insufflation during colonic stenting. The possibility of abdominal compartment syndrome should be considered if acute respiratory disturbance or altered consciousness occurs during endoscopic procedure in a patient with malignant bowel obstruction.
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Affiliation(s)
- Taro Tanabe
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
| | - Genki Tsukuda
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan
| | - Takahiro Hobo
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan
| | - Noboru Yokoyama
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan
| | - Haruhiro Inoue
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-ku, Tokyo, 135-8577, Japan
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Toshimori A, Tanabe M, Shimamura Y, Shiomi D, Ushikubo K, Kishi Y, Kato H, Fukuda M, Shibata Y, Kunita K, Fujiyoshi MRA, Fujiyoshi Y, Nishikawa Y, Sumi K, Ikeda H, Onimaru M, Uragami N, Yokoyama N, Inoue H. Endoscopic carbon dioxide insufflation tolerance test on the anal sphincter for anorectal hypofunction: a pilot and feasibility study. Ann Gastroenterol 2023; 36:437-441. [PMID: 37396011 PMCID: PMC10304521 DOI: 10.20524/aog.2023.0805] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 04/25/2023] [Indexed: 07/04/2023] Open
Abstract
Background Anorectal function deteriorates with age. The diagnostic performance of the endoscopic pressure study integrated system (EPSIS), an endoscopic carbon dioxide (CO2) insufflation stress test of the lower esophageal sphincter has been previously evaluated as a diagnostic tool for gastroesophageal reflux disease. We aimed to evaluate the applicability of EPSIS in improving anorectal function. We hypothesized that EPSIS can be applied to the diagnosis of lower gastrointestinal tract disorders. Methods This was a pilot, single-center, retrospective study using prospectively collected data between December 2021 and March 2022. It was designed to evaluate the differences in EPSIS rectal pressure measurements between older (≥80 years) and younger (<80 years) patients. At the end of the screening colonoscopy, the colonoscope was fixed in a retroflex position. When bowel movement was observed, CO2 was insufflated to the point where gas leakage occurred through the anus. The measured maximum pressure was defined as EPSIS-rectal pressure max (EPSIS-RP max) and compared between the groups. Results Overall, 30 patients were included and examined. The median ages of the <80 and ≥80 years' groups were 53 (range: 27-79) and 82 (range: 80-94) years, respectively, with corresponding median measured EPSIS-RP max of 18.7 (range: 8.5-30.2) and 9.8 (range: 5.4-22.3) mmHg (P<0.001). Conclusions Measurement of maximum rectal pressure illustrates the age-related decline in physiological anorectal function. Future studies should consider a loading test using EPSIS to quantify the decline in anorectal function and use it as a routine tool for screening and adjunctive diagnosis of anorectal hypofunction.
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Affiliation(s)
- Akiko Toshimori
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Mayo Tanabe
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yuto Shimamura
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Daijiro Shiomi
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kei Ushikubo
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yumi Kishi
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Hisaki Kato
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Mai Fukuda
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yuki Shibata
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kosuke Kunita
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | | | - Yusuke Fujiyoshi
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yohei Nishikawa
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kazuya Sumi
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruo Ikeda
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Manabu Onimaru
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
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Ito H, Uragami N, Miyazaki T, Shimamura Y, Ikeda H, Nishikawa Y, Onimaru M, Matsuo K, Isozaki M, Yang W, Issha K, Kimura S, Kawamura M, Yokoyama N, Kushima M, Inoue H. Determination of esophageal squamous cell carcinoma and gastric adenocarcinoma on raw tissue using Raman spectroscopy. World J Gastroenterol 2023; 29:3145-3156. [PMID: 37346148 PMCID: PMC10280800 DOI: 10.3748/wjg.v29.i20.3145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 04/10/2023] [Accepted: 04/27/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND Cancer detection is a global research focus, and novel, rapid, and label-free techniques are being developed for routine clinical practice. This has led to the development of new tools and techniques from the bench side to routine clinical practice. In this study, we present a method that uses Raman spectroscopy (RS) to detect cancer in unstained formalin-fixed, resected specimens of the esophagus and stomach. Our method can record a clear Raman-scattered light spectrum in these specimens, confirming that the Raman-scattered light spectrum changes because of the histological differences in the mucosal tissue.
AIM To evaluate the use of Raman-scattered light spectrum for detecting endoscop-ically resected specimens of esophageal squamous cell carcinoma (SCC) and gastric adenocarcinoma (AC).
METHODS We created a Raman device that is suitable for observing living tissues, and attempted to acquire Raman-scattered light spectra in endoscopically resected specimens of six esophageal tissues and 12 gastric tissues. We evaluated formalin-fixed tissues using this technique and captured shifts at multiple locations based on feasibility, ranging from six to 19 locations 200 microns apart in the vertical and horizontal directions. Furthermore, a correlation between the obtained Raman scattered light spectra and histopathological diagnosis was performed.
RESULTS We successfully obtained Raman scattered light spectra from all six esophageal and 12 gastric specimens. After data capture, the tissue specimens were sent for histopathological analysis for further processing because RS is a label-free methodology that does not cause tissue destruction or alterations. Based on data analysis of molecular-level substrates, we established cut-off values for the diagnosis of esophageal SCC and gastric AC. By analyzing specific Raman shifts, we developed an algorithm to identify the range of esophageal SCC and gastric AC with an accuracy close to that of histopathological diagnoses.
CONCLUSION Our technique provides qualitative information for real-time morphological diagnosis. However, further in vivo evaluations require an excitation light source with low human toxicity and large amounts of data for validation.
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Affiliation(s)
- Hiroaki Ito
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | | | - Yuto Shimamura
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Haruo Ikeda
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Yohei Nishikawa
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Manabu Onimaru
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Kai Matsuo
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Masayuki Isozaki
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - William Yang
- Bay Spec Inc., San Jose, CA 95131, United States
| | - Kenji Issha
- Fuji Technical Research Inc., Yokohama 220-6215, Japan
| | - Satoshi Kimura
- Department of Laboratory Medicine and Central Clinical Laboratory, Showa University Northern Yokohama Hospital, Yokohama 224-8503, Japan
| | - Machiko Kawamura
- Department of Hematology, Saitama Cancer Center, Inamachi 362-0806, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Miki Kushima
- Department of Pathology, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
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Oinuma S, Yoshio D, Omotaka S, Terunuma T, Kasagi S, Kimura H, Yokoyama N, Inoue H. A case of acute cholecystitis with abnormally high CA19-9. Surg Case Rep 2023; 9:69. [PMID: 37133772 PMCID: PMC10156876 DOI: 10.1186/s40792-023-01648-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/12/2023] [Indexed: 05/04/2023] Open
Abstract
BACKGROUND CA19-9 is strongly expressed in malignant tumors of the digestive system and is widely used as a marker for gastrointestinal cancer. In this report, we describe a case of acute cholecystitis in which CA19-9 was markedly elevated. CASE PRESENTATION A 53-year-old man was admitted to our hospital with a diagnosis of acute cholecystitis after being referred to our hospital with a chief complaint of fever and right hypochondrial pain. CA19-9 was abnormally high at 17,539.1 U/ml. Although the possibility of malignancy was considered, there was no obvious malignant lesion on imaging; the patient was diagnosed with cholecystitis, and laparoscopic cholecystectomy was performed the day after admission. The surgical specimen showed no malignant findings either grossly or in the final pathological examination. There were no complications in the patient's postoperative course, and he was discharged from the hospital on the third postoperative day. CA19-9 level quickly returned to within normal range after surgery. CONCLUSIONS In acute cholecystitis, CA19-9 levels exceeding 10,000 U/ml are very rare. We report a case of acute cholecystitis without malignant findings despite a high CA19-9 level.
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Affiliation(s)
- Shinichiro Oinuma
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan.
| | - Deguchi Yoshio
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Syunsuke Omotaka
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Takuya Terunuma
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Shinya Kasagi
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Hironobu Kimura
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Koto-Ku, Tokyo, 135-8577, Japan
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Yokoyama N, Sato D, Katada T, Otani T, Furukawa K, Hashidate H. Gastrointestinal: Melanotic schwannoma of the pancreas associated with Carney complex: A cause of acute neoplastic symptom. J Gastroenterol Hepatol 2023; 38:7. [PMID: 35615762 DOI: 10.1111/jgh.15888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/07/2022] [Indexed: 01/19/2023]
Affiliation(s)
- N Yokoyama
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - D Sato
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - T Katada
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - T Otani
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - K Furukawa
- Department of Gastroenterology and Hepatology, Niigata City General Hospital, Niigata, Japan
| | - H Hashidate
- Department of Pathology, Niigata City General Hospital, Niigata, Japan
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Ito H, Uragami N, Miyazaki T, Yang W, Issha K, Matsuo K, Kimura S, Arai Y, Tokunaga H, Okada S, Kawamura M, Yokoyama N, Kushima M, Inoue H, Fukagai T, Kamijo Y. Highly accurate colorectal cancer prediction model based on Raman spectroscopy using patient serum. World J Gastrointest Oncol 2020; 12:1311-1324. [PMID: 33250963 PMCID: PMC7667458 DOI: 10.4251/wjgo.v12.i11.1311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/28/2020] [Accepted: 10/19/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is an important disease worldwide, accounting for the second highest number of cancer-related deaths and the third highest number of new cancer cases. The blood test is a simple and minimally invasive diagnostic test. However, there is currently no blood test that can accurately diagnose CRC.
AIM To develop a comprehensive, spontaneous, minimally invasive, label-free, blood-based CRC screening technique based on Raman spectroscopy.
METHODS We used Raman spectra recorded using 184 serum samples obtained from patients undergoing colonoscopies. Patients with malignant tumor histories as well as those with cancers in organs other than the large intestine were excluded. Consequently, the specific diseases of 184 patients were CRC (12), rectal neuroendocrine tumor (2), colorectal adenoma (68), colorectal hyperplastic polyp (18), and others (84). We used the 1064-nm wavelength laser for excitation. The power of the laser was set to 200 mW.
RESULTS Use of the recorded Raman spectra as training data allowed the construction of a boosted tree CRC prediction model based on machine learning. Therefore, the generalized R2 values for CRC, adenomas, hyperplastic polyps, and neuroendocrine tumors were 0.9982, 0.9630, 0.9962, and 0.9986, respectively.
CONCLUSION For machine learning using Raman spectral data, a highly accurate CRC prediction model with a high R2 value was constructed. We are currently planning studies to demonstrate the accuracy of this model with a large amount of additional data.
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Affiliation(s)
- Hiroaki Ito
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | | | | | - Kenji Issha
- Fuji Technical Research Inc., Yokohama 220-6215, Japan
| | - Kai Matsuo
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Satoshi Kimura
- Department of Laboratory Medicine and Central Clinical Laboratory, Showa University Northern Yokohama Hospital, Yokohama 224-8503, Japan
| | - Yuji Arai
- Department of Clinical Laboratory, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Hiromasa Tokunaga
- Department of Clinical Laboratory, Showa University Hospital, Tokyo 142-8555, Japan, BML Inc., Tokyo 151-0051, Japan
| | - Saiko Okada
- Department of Clinical Laboratory, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Machiko Kawamura
- Department of Hematology, Saitama Cancer Center, Inamachi, Saitama 362-0806, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Miki Kushima
- Department of Pathology, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Takashi Fukagai
- Department of Urology, Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
| | - Yumi Kamijo
- Showa University Koto Toyosu Hospital, Tokyo 135-8577, Japan
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Katayama T, Yokoyama N, Hirofumi H, Kataoka A, Watanabe Y, Kozuma K. Blood coagulation status after transcatheter aortic valve implantation between the patients with vitamin k antagonist and direct oral anticoagulants. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Ischemic stroke after transchatheter aortic valve implantation (TAVI) was recognized. Previous study showed that the median time of a stroke was 2.0 days (IQR, 1.0–5.0) after TAVI. One of the main mechanisms for ischemic stroke after TAVI was hyper-coagulation activity associated with TAVI procedure. However, the change of coagulation status in patients with oral anticoagulant (OAC) therapy was not investigated fully.
Purpose
We investigated the difference of blood coagulation parameters between the patients with vitamin K antagonist (VKA) and those with direct oral anticoagulants (DOAC).
Methods
We enrolled 253 patients underwent transfemoral TAVI between February 2017 and March 2019 in our hospital. Of 253 patients, 71 patients (age: 85, male: 20%) took OAC therapy (VKA: 21 patients, DOAC: 50 patients). Patients who took apixaban was 32 patients, rivaroxaban was 7, edoxaban was 11. Prothrombin activation fragment 1+2 (F1+2) as a molecular marker of thrombin generation, thrombin-anti-thrombin complex (TAT) as a marker of thrombin neutralization, soluble fibrin monomer complex (SFMC) as a marker of thrombophilia and fibrin/fibrinogen degradation product (FDP) as a marker of fibrinolysis were measured before and immediately after TAVI, and on 1 and 2 day postoperatively. We also assessed ischemic stroke after TAVI between 2 groups according to BARC-2 criteria.
Results
In patients with VKA, the value of PT-INR the day before TVAI was 1.2 (1.1–1.4). The level of F1+2 in patients with VKA was significantly greater on day 0 postoperatively than those with DOAC [855 pmol/l (595–1135) vs 614 pmol/l (452–774) P=0.003]. The level of SFMC in patients with VKA was significantly greater on day 0 postoperatively than those with DOAC [37.4 μg/ml (17.3–64.5) vs. 15.7 μg/ml (8.8–27.3) P=0.002]. The level of FDP in patients with VKA was significantly greater on day 0 postoperatively than those with DOAC [VKA: 5.8 μg/ml (3.8–7.9), DOAC: 4.0 μg/ml (3.1–5.3) P=0.023]. There were no patients with ischemic stroke among 2 groups.
Conclusion
This study revealed that coagulation activity was increased after TAVI. Furthermore, the coagulation activity in patients with VKA was significantly higher than that with DOAC at especially immediately after TAVI. Careful attention should be paid to hyper-coagulation status after TAVI in patients with VKA.
Funding Acknowledgement
Type of funding source: None
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Ito H, Miyazaki T, Uragami N, Yokoyama N, Inoue H. Analysis of serum by Raman spectroscopy finds changes in blood metabolites of cancer patients in 45 seconds. J Glob Oncol 2019. [DOI: 10.1200/jgo.2019.5.suppl.57] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
57 Background: Cancer is an important disease that accounts for many of the causes of death worldwide, and early diagnosis is important for improving treatment results. In medical care, blood test is a simple and excellent test method, but there is still no cancer blood diagnosis method with high accuracy that can be performed in general hospitals. We are trying to detect cancer patients by analyzing serum using Raman spectroscopy. Methods: Among the outpatients who underwent upper gastrointestinal endoscopy or colonoscopy, 236 subjects who agreed to participate in the study were included. Raman scattering spectra were measured by irradiating a 1064 nm wavelength laser for 15 seconds with serum collected from the subject before endoscopic examination. The average value measured a total of three times was taken as the measured value, and the three measured values were averaged to obtain the value of each examinee. In the obtained Raman scattering spectra, the scattering spectral intensities of the wavelength originating in the specific molecules were analyzed. Results: We were able to obtain clear Raman scattering spectra of all serum samples. When comparing the Raman scattering spectral intensities of the wavelength originating in specific molecules, a large number of serum measurement values were gathered at the center, and the measurement values of the cancer patients' serum were over low or high. By setting the appropriate cutoff line, cancer patients (gastric cancer or colon cancer) and non-cancerous persons could be relatively clearly distinguished (sensitivity, 100%; Specificity, 75%). Conclusions: Our micro Raman system is able to acquire Raman scattering spectra of serum samples. Furthermore, it has been suggested that cancer diagnosis using serum could be possible by comparing the scattering spectral intensities caused by specific molecules. Clinical trial information: UMIN000034306.
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Affiliation(s)
- Hiroaki Ito
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | | | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
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Mitsui M, Kataoka A, Nara Y, Nagura F, Kawashima H, Hioki H, Nakashima M, Watanabe Y, Yokoyama N, Kozuma K. P2621Clinical safety and efficacy of tolvaptan for acute phase therapy in patients with low-flow severe aortic stenosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Conventional diuretic therapy for low-flow (LF) severe aortic stenosis (SAS) often has an inadequate effect or causes hemodynamic instability. Tolvaptan is used for acute heart failure in addition to conventional diuretics in Japan, and it does not cause intravascular dehydration.
Purpose
This study aimed to retrospectively investigate the safety and efficacy of tolvaptan in the acute phase patients with SAS and compared LF-SAS with normal-flow (NF) SAS.
Methods
56 consecutive SAS patients are analyzed. The primary endpoints were adverse clinical events (death, worsening heart failure, worsening renal failure, fatal arrhythmia, cardiogenic or hypovolemic shock, and use of inotropic agents) and the volume of urine and fluid balance within 48 hours of tolvaptan administration (Figure).
Results
Among 56 patients, 16 had LF-SAS (29%), and 40 had NF-SAS (71%). Severe adverse clinical events were not observed 48 hours after tolvaptan administration. In both groups, the urine volume significantly increased after tolvaptan administration in comparison to 24 hours before tolvaptan administration (both, p<0.01). There were no changes in the urine volume during the initial 24 and 48 hours. In the LF-SAS group, tolvaptan resulted in a significant decrease in fluid balance during the initial 24 and 48 hours compared to 24 hours before tolvaptan administration (p<0.05).
Treatment and data collection protocols
Conclusion
Adding tolvaptan to conventional treatment leads to an increase in urine output and a decreased fluid balance without hemodynamic instability in patients with LF-SAS.
Acknowledgement/Funding
None
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Affiliation(s)
| | | | - Y Nara
- Teikyo University, Tokyo, Japan
| | | | | | - H Hioki
- Teikyo University, Tokyo, Japan
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Onimaru M, Inoue H, Ikeda H, Abad MRA, Quarta Colosso BM, Shimamura Y, Sumi K, Deguchi Y, Ito H, Yokoyama N. Combination of laparoscopic and endoscopic approaches for neoplasia with non-exposure technique (CLEAN-NET) for gastric submucosal tumors: updated advantages and limitations. Ann Transl Med 2019; 7:582. [PMID: 31807563 DOI: 10.21037/atm.2019.09.19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Laparoscopic and endoscopic cooperative surgery (LECS) for gastric submucosal tumors (SMTs) has been developed under the concept of resecting gastric tumors with both complete curability and preserving organ functions. Precise resection is obtained by classical LECS, however, concerns regarding intraoperative bacterial infection and dissemination of the tumor cells into the abdominal cavity by LECS with exposure technique still remain. To prevent these concerns, several LECS-related procedures with non-exposure techniques, such as combination of laparoscopic and endoscopic approaches for neoplasia with non-exposure technique (CLEAN-NET) and non-exposed endoscopic wall-inversion surgery (NEWS), have been reported to be safe and feasible. Classical LECS, CLEAN-NET, and NEWS have the same concept, however, each has its own different characteristic procedures; exposure or non-exposure technique, inversion of the tumor into or outer the lumen, retrieval of tumor per oral or through the abdominal cavity, and dominance in the role of the endoscopist or the laparoscopic surgeon. Familiarization with these procedure details is important to understand their indications, advantages and limitations, resulting in providing a tailored minimally invasive surgery for patients. The main scope of this review article is to introduce readers to the clinical application, procedure, and results of CLEAN-NET, both from previous literatures and from our experience, as well as to offer a closer look at its advantages and limitations while comparing with other LECS procedures from the viewpoint of introducing CLEAN-NET first.
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Affiliation(s)
- Manabu Onimaru
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruhiro Inoue
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruo Ikeda
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | | | | | - Yuto Shimamura
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kazuya Sumi
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yoshio Deguchi
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Hiroaki Ito
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
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11
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Ohara Y, Yabuki A, Nakamura R, Ichii O, Mizukawa H, Yokoyama N, Yamato O. Renal Infiltration of Macrophages in Canine and Feline Chronic Kidney Disease. J Comp Pathol 2019; 170:53-59. [PMID: 31375159 DOI: 10.1016/j.jcpa.2019.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 02/01/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 12/21/2022]
Abstract
During the progression of chronic kidney disease (CKD), macrophage infiltration is a crucial event leading to tubulointerstitial fibrosis. In the present study, macrophages infiltrating renal tissue in dogs and cats with CKD were analysed immunohistochemically. Iba-1 was used as a pan-macrophage marker, CD204 was used as a marker of M2 macrophages and tumour necrosis factor (TNF)-α was used as a marker of M1 macrophages. Signals for Iba1 and CD204 were observed in the interstitium of all tested kidney samples. In dogs, the signals were diffusely scattered. In cats, both diffuse and focal signals were observed. Cells that were positive for Iba1 and CD204 were also observed in the tubular lumina in cats. Co-expression of Iba1 and CD204 was also observed in the infiltrating cells by immunofluorescence labelling, and these cells were negative for TNF-α. By quantitative analysis, the indices for Iba1- and CD204-positive cells were significantly correlated with the concentrations of plasma creatinine and/or urea and the extent of interstitial fibrosis in both dogs and cats. These results demonstrated that renal infiltration of M2 macrophages plays an important role in the progression of CKD in dogs and cats. The distribution pattern of the kidney-infiltrating macrophages was unique in cats and may be associated with a cat-specific renal fibrotic process.
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Affiliation(s)
- Y Ohara
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
| | - A Yabuki
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima.
| | - R Nakamura
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
| | - O Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo
| | - H Mizukawa
- Laboratory of Environmental Analytical Chemistry, Department of Science and Technology for Biological Resources and Environment, Graduate School of Agriculture, Ehime University, Matsuyama
| | - N Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - O Yamato
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
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12
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Ito H, Uragami N, Miyazaki T, Yokoyama N, Inoue H. Raman spectroscopic evaluation of human serum using metal plate and 785- and 1064-nm excitation lasers. PLoS One 2019; 14:e0211986. [PMID: 30768643 PMCID: PMC6377121 DOI: 10.1371/journal.pone.0211986] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/23/2019] [Indexed: 12/15/2022] Open
Abstract
In this study, we utilized a stainless steel (SUS304) plate for measuring the Raman scattering spectra of body fluid samples. Using this stainless steel plate, we recorded the Raman scattering spectra of 99.5% ethanol and human serum samples by performing irradiation with 785- and 1064-nm lasers. Raman scattering spectra with intensities equal to or greater than those reported previously were obtained. In addition, the Raman scattering spectra acquired using the 1064-nm laser were less influenced by autofluorescence than those obtained via use of the shorter-wavelength laser. Moreover, the shapes of the spectra did not show any dependence on integration time, and denaturation of the samples was minimal. Our method, based on 1064-nm laser and the stainless steel plate, provides performance equal to or better than the methods reported thus far for the measurement of Raman scattering spectra from liquid samples. This method can be employed to rapidly evaluate the components of serum in liquid form without using surface-enhanced Raman scattering.
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Affiliation(s)
- Hiroaki Ito
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Toyosu, Koto-ku, Tokyo, Japan
- * E-mail:
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Toyosu, Koto-ku, Tokyo, Japan
| | - Tomokazu Miyazaki
- Research Planning Department, JSR Corporation, Higashi-Sinbashi, Minato-ku, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Toyosu, Koto-ku, Tokyo, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Toyosu, Koto-ku, Tokyo, Japan
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13
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Ikeda H, Ito H, Hikita M, Yamaguchi N, Uragami N, Yokoyama N, Hirota Y, Kushima M, Ajioka Y, Inoue H. Raman spectroscopy for the diagnosis of unlabeled and unstained histopathological tissue specimens. World J Gastrointest Oncol 2018; 10:439-448. [PMID: 30487955 PMCID: PMC6247109 DOI: 10.4251/wjgo.v10.i11.439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/06/2018] [Accepted: 10/17/2018] [Indexed: 02/05/2023] Open
Abstract
AIM To investigate the possibility of diagnosing gastric cancer from an unstained pathological tissue using Raman spectroscopy, and to compare the findings to those obtained with conventional histopathology.
METHODS We produced two consecutive tissue specimens from areas with and without cancer lesions in the surgically resected stomach of a patient with gastric cancer. One of the two tissue specimens was stained with hematoxylin and eosin and used as a reference for laser irradiation positioning by the spectroscopic method. The other specimen was left unstained and used for Raman spectroscopy analysis.
RESULTS A significant Raman scattering spectrum could be obtained at all measurement points. Raman scattering spectrum intensities of 725 cm-1 and 782 cm-1, are associated with the nucleotides adenine and cytosine, respectively. The Raman scattering spectrum intensity ratios of 782 cm-1/620 cm-1, 782 cm-1/756 cm-1, 782 cm-1/1250 cm-1, and 782 cm-1/1263 cm-1 in the gastric adenocarcinoma tissue were significantly higher than those in the normal stomach tissue.
CONCLUSION The results of this preliminary experiment suggest the feasibility of our spectroscopic method as a diagnostic tool for gastric cancer using unstained pathological specimens.
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Affiliation(s)
- Haruo Ikeda
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Hiroaki Ito
- Department of Surgery, Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Muneaki Hikita
- Stem Cell Business Development Department, Nikon Corporation, Sakae-ku, Yokohama, Kanagawa 2448533, Japan
| | - Noriko Yamaguchi
- Department of Surgery, Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Naoyuki Uragami
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Noboru Yokoyama
- Department of Surgery, Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Yuko Hirota
- Department of Pathology, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Miki Kushima
- Department of Pathology, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
| | - Yoichi Ajioka
- Division of Cellular and Molecular Pathology, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata City, Niigata 9518510, Japan
| | - Haruhiro Inoue
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Koto-ku, Tokyo 1358577, Japan
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14
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Yokoyama N, Ishimura T, Oda T, Ogawa S, Yamamoto K, Fujisawa M. Association of the PCK2 Gene Polymorphism With New-onset Glucose Intolerance in Japanese Kidney Transplant Recipients. Transplant Proc 2018; 50:1045-1049. [PMID: 29731064 DOI: 10.1016/j.transproceed.2018.01.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/22/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND New-onset diabetes mellitus after transplantation (NODAT) is a risk factor for both cardiovascular disease and poor graft survival after kidney transplantation (KTx). In this study, we identified single-nucleotide polymorphisms (SNPs) in genes involved in glucose metabolism and examined the correlation between these SNPs and glucose intolerance after KTx. METHODS Thirty-eight patients with normal glucose tolerance before KTx were included in this study. Patients with plasma glucose levels of >140 mg/dL at 120 minutes on the 75-g oral glucose tolerance test at 1 year after KTx were classified as having new-onset impaired glucose tolerance (NIGT). We identified 8 SNPs in 7 genes that are involved in glucose metabolism among the patients included in this study, and compared the prevalence rate of NIGT among SNPs in each gene. RESULTS Of the 38 patients, 11 (28.9%) were diagnosed with NIGT. For rs4982856 in the PCK2 gene, the distribution of genotypes among the total patient population was as follows: T/T, 12 (31.6%); T/C, 22 (57.9%); and C/C, 4 (10.5%). Seven of 11 patients with NIGT had the T/T genotype of rs4982856, whereas only 5 of 27 patients with normal glucose tolerance had this genotype. The T allele frequency of the rs4982856 was significantly higher in the NIGT group than in the normal group (81.8 vs 52.8%, respectively; P = .015). CONCLUSION Our study indicates that the T allele of the rs4982856 SNP in the PCK2 gene may be a risk factor for glucose intolerance after KTx.
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Affiliation(s)
- N Yokoyama
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Ishimura
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - T Oda
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Ogawa
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Yamamoto
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - M Fujisawa
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
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15
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Katayama T, Yokoyama N, Watanabe Y, Takahashi S, Kawamura H, Nakashima M, Kawasugi K, Kozuma K. P6316Differences of blood coagulation parameters and platelet counts in patients undergoing transcatheter aortic valve implantation with Edwards SAPIEN 3 or Corevalve Evolut R. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Katayama
- Teikyo University School of Medicine, Tokyo, Japan
| | - N Yokoyama
- Teikyo University School of Medicine, Tokyo, Japan
| | - Y Watanabe
- Teikyo University School of Medicine, Tokyo, Japan
| | - S Takahashi
- Teikyo University School of Medicine, Tokyo, Japan
| | - H Kawamura
- Teikyo University School of Medicine, Tokyo, Japan
| | - M Nakashima
- Teikyo University School of Medicine, Tokyo, Japan
| | - K Kawasugi
- Teikyo University School of Medicine, Tokyo, Japan
| | - K Kozuma
- Teikyo University School of Medicine, Tokyo, Japan
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16
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Nakaya H, Yokoyama N, Kataoka A, Watanabe Y, Kumiko K, Furukawa T, Kozuma K. P5442Prevalence and predictors of atherosclerotic peripheral arterial obstructive disease in heart valve disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Nakaya
- Teikyo University School of Medicine, Tokyo, Japan
| | - N Yokoyama
- Teikyo University School of Medicine, Tokyo, Japan
| | - A Kataoka
- Teikyo University School of Medicine, Tokyo, Japan
| | - Y Watanabe
- Teikyo University School of Medicine, Tokyo, Japan
| | - K Kumiko
- Teikyo University School of Medicine, Tokyo, Japan
| | - T Furukawa
- Teikyo University Hospital, Laboratory Medicine, Tokyo, Japan
| | - K Kozuma
- Teikyo University School of Medicine, Tokyo, Japan
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17
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Sasaoka K, Nakamura K, Osuga T, Morita T, Yokoyama N, Morishita K, Sasaki N, Ohta H, Takiguchi M. Transcranial Doppler Ultrasound Examination in Dogs with Suspected Intracranial Hypertension Caused by Neurologic Diseases. J Vet Intern Med 2017; 32:314-323. [PMID: 29265506 PMCID: PMC5787153 DOI: 10.1111/jvim.14900] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 01/30/2017] [Revised: 10/23/2017] [Accepted: 11/15/2017] [Indexed: 11/30/2022] Open
Abstract
Background Transcranial Doppler ultrasound examination (TCD) is a rapid, noninvasive technique used to evaluate cerebral blood flow and is useful for the detection of intracranial hypertension in humans. However, the clinical usefulness of TCD in diagnosing intracranial hypertension has not been demonstrated for intracranial diseases in dogs. Objectives To determine the association between the TCD variables and intracranial hypertension in dogs with intracranial diseases. Animals Fifty client‐owned dogs with neurologic signs. Methods Cross‐sectional study. All dogs underwent TCD of the basilar artery under isoflurane anesthesia after magnetic resonance imaging (MRI). Dogs were classified into 3 groups based on MRI findings: no structural diseases (group I), structural disease without MRI evidence of intracranial hypertension (group II), and structural disease with MRI evidence of intracranial hypertension (group III). The TCD vascular resistance variables (resistive index [RI], pulsatility index [PI], and the ratio of systolic to diastolic mean velocity [Sm/Dm]) were measured. Results Fifteen, 22, and 13 dogs were classified into groups I, II, and III, respectively. Dogs in group III had significantly higher Sm/Dm (median, 1.78; range, 1.44–2.58) than those in group I (median, 1.63; range, 1.43–1.75) and group II (median, 1.62; range, 1.27–2.10). No significant differences in RI and PI were identified among groups. Conclusions and Clinical Importance Our findings suggest that increased Sm/Dm is associated with MRI findings of suspected intracranial hypertension in dogs with intracranial diseases and that TCD could be a useful tool to help to diagnose intracranial hypertension.
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Affiliation(s)
- K Sasaoka
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Nakamura
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - T Osuga
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - T Morita
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - N Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Morishita
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - N Sasaki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - H Ohta
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - M Takiguchi
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
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Okuno K, Aoyama T, Oba K, Yokoyama N, Matsuhashi N, Kunieda K, Nishimura Y, Akamatsu H, Kobatake T, Morita S, Yoshikawa T, Sakamoto J, Saji S. Randomized phase III trial comparing surgery alone to UFT + PSK for stage II rectal cancer (JFMC38 trial). Cancer Chemother Pharmacol 2017; 81:65-71. [PMID: 29094178 PMCID: PMC5754396 DOI: 10.1007/s00280-017-3466-7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 10/16/2017] [Indexed: 11/26/2022]
Abstract
Background We conducted a randomized phase III trial comparing tegafur/uracil (UFT) and Polysaccharide-K (PSK) to surgery alone in curatively resected stage II rectal cancer patients. Methods Patients were randomly assigned to receive either UFT and PSK or surgery alone in a 1:1 ratio with a minimization method to balance the treatment allocation. The primary end point of this study was the disease-free survival (DFS). The secondary end point was the overall survival (OS). Results From October 2011 to February 2013, 111 patients were registered from 62 institutions. The study was prematurely closed due to poor accrual after reaching 20% of its goal. The patients’ characteristics were similar between the UFT and PSK group and the surgery-alone group. The DFS rate was 76.0% at 3 years and 65.1% at 5 years in the UFT and PSK arm and 84.0% at 3 years and 77.2% at 5 years in the surgery-alone arm. The DFS was slightly worse in the UFT + PSK arm than in the surgery-alone arm, but the difference did not reach statistical significance (log rank p = 0.102). The OS rate was 100% at 3 years and 97.9% at 5 years in the UFT + PSK arm, while that was 100% at 3 years and 93.4% at 5 years in the surgery-alone arm. The OS was similar in the UFT + PSK arm and surgery-alone arm (p = 0.533). Conclusion The present study suggests that UFT and PSK are not attractive candidates to advance to the next phase III study because the DFS was slightly worse in the UFT and PSK arm than in the surgery-alone arm.
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Affiliation(s)
- Kiyotaka Okuno
- Department of Surgery, Kindai University Faculty of Medicine, Osaka, Japan
| | - Toru Aoyama
- Department of Surgery, Yokohama City University Yokoham, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
| | - Koji Oba
- Department of Biostatistics, The University of Tokyo, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Disease Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | | | - Katsuyuki Kunieda
- Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Yoji Nishimura
- Department of Gastroenterological Surgery, Saitama Cancer Cancer, Saitama, Japan
| | | | - Takaya Kobatake
- Department of Surgery, Shikoku Cancer Center Hospital, Matsuyama, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takaki Yoshikawa
- Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - Junichi Sakamoto
- Japanese Foundation for Multidisciplinary Treatment of Cancer, Tokyo, Japan
- Tokai Central Hospital, Kakamigahara, Japan
| | - Shigetoyo Saji
- Japanese Foundation for Multidisciplinary Treatment of Cancer, Tokyo, Japan
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Cho T, Higaki H, Hirata M, Hojo H, Ichimura M, Ishii K, Islam K, Itakura A, Katanuma I, Kohagura J, Nakashima Y, Numakura T, Saito T, Tatematsu Y, Yoshikawa M, Tokioka S, Yokoyama N, Miyake Y, Tomii Y, Kojima Y, Takemura Y, Imai T, Yoshida M, Sakamoto K, Pastukhov VP, Miyoshi S. Recent Progress in the GAMMA 10 Tandem Mirror. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a601] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cho
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H. Higaki
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Hirata
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H. Hojo
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ichimura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - K. Ishii
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - K. Islam
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - A. Itakura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - I. Katanuma
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Nakashima
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Numakura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Saito
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Tatematsu
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshikawa
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - S. Tokioka
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - N. Yokoyama
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Miyake
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Tomii
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Kojima
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Takemura
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T. Imai
- Plasma Research Centre, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M. Yoshida
- JAERI, Naka Fusion Research Establishment, Ibaraki, Japan
| | - K. Sakamoto
- JAERI, Naka Fusion Research Establishment, Ibaraki, Japan
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Kyono H, Nakashima M, Takamura S, Nakaya H, Nishide S, Nara Y, Sasaki K, Katayama T, Nagura F, Kawashima H, Hioki H, Watanabe Y, Konno K, Yokoyama N, Kozuma K. P4289The impact of transient slow flow/no-reflow during rotational atherectomy on clinical outcomes. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Shiratori Y, Obana R, Tamura M, Kubo E, Iino R, Miyazawa A, Yokoyama N, Maruyama Y. P5182Five-year clinical outcome after angioplasty for symptomatic lower-limb ischemia in hemodialysis patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Oda T, Ishimura T, Yokoyama N, Ogawa S, Miyake H, Fujisaw M. Hypoxia-Inducible Factor-1α Expression in Kidney Transplant Biopsy Specimens After Reperfusion Is Associated With Early Recovery of Graft Function After Cadaveric Kidney Transplantation. Transplant Proc 2017; 49:68-72. [PMID: 28104162 DOI: 10.1016/j.transproceed.2016.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Ischemia/reperfusion injury during kidney transplantation (KTx) delays allograft recovery. Hypoxia-inducible factor-1α (HIF-1α) is the key regulator of the protective response to ischemia/reperfusion injury. We evaluated the impact of the HIF-1α signaling pathway on allograft recovery during cadaveric KTx. METHODS Between 1996 and 2015, 46 patients underwent cadaveric KTx. The expression levels of HIF-1α-related proteins, including phosphoinositide 3-kinase, phosphorylated (p)-Akt, p-mammalian target of rapamycin, p-Eukaryotic translation initiation factor 4E, p-S6 ribosomal protein, and HIF-1α, were immunohistochemically evaluated and semi-quantitatively scored in graft biopsy specimens after 1 hour of revascularization. Ten kidney biopsy specimens collected during donor nephrectomy for living KTx were used as controls. Delayed graft function (DGF) was defined as the need for dialysis within 1 week of KTx. We compared the staining scores of each protein and several clinical parameters between patients with and those without DGF. RESULTS Expression levels of all six proteins in specimens after revasculization were elevated compared with those in controls. Thirty-five patients had DGF. Expression levels of PI3K, p-AKT, p-mTOR, p-eIF4E, and HIF-1α were significantly higher in patients without DGF than in those with DGF. Univariate analysis identified expression levels of p-Akt, p-S6, and HIF-1α, in addition to donor type (heart beating/non-heart beating), cold ischemic time, and donor age as significant predictors of DGF. Of these, only expression levels of HIF-1α and donor type were independently associated with DGF in multivariate analysis. CONCLUSIONS Up-regulation of HIF-1α in allografts after reperfusion may be a predictor of early recovery after cadaveric KTx.
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Affiliation(s)
- T Oda
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - T Ishimura
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - N Yokoyama
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Ogawa
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Miyake
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Fujisaw
- Division of Urology, Department of Surgery Related, Faculty of Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
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Ohta H, Morita T, Yokoyama N, Osuga T, Sasaki N, Morishita K, Nakamura K, Takiguchi M. Serial measurement of pancreatic lipase immunoreactivity concentration in dogs with immune-mediated disease treated with prednisolone. J Small Anim Pract 2017; 58:342-347. [DOI: 10.1111/jsap.12652] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/28/2016] [Accepted: 01/02/2017] [Indexed: 12/21/2022]
Affiliation(s)
- H. Ohta
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - T. Morita
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - N. Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - T. Osuga
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - N. Sasaki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - K. Morishita
- Veterinary Teaching Hospital, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - K. Nakamura
- Veterinary Teaching Hospital, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
| | - M. Takiguchi
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine; Hokkaido University; Sapporo 060-0818 Japan
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Yokoyama N, Ohta H, Yamazaki J, Kagawa Y, Ichii O, Khoirun N, Morita T, Osuga T, Lim SY, Sasaki N, Morishita K, Nakamura K, Takiguchi M. Localization of Toll-like Receptor (TLR) 2 and TLR4 mRNA in the Colorectal Mucosa of Miniature Dachshunds with Inflammatory Colorectal Polyps. J Comp Pathol 2017; 156:183-190. [PMID: 28089357 DOI: 10.1016/j.jcpa.2016.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 08/05/2016] [Revised: 09/30/2016] [Accepted: 10/22/2016] [Indexed: 01/03/2023]
Abstract
Inflammatory colorectal polyps (ICRPs) are characterized by the formation of multiple or solitary polyps with marked neutrophil infiltration in the colorectal area, and are speculated to be a novel form of breed-specific canine idiopathic inflammatory bowel disease (IBD). In human IBD, toll-like receptor (TLR) 2 and TLR4 have been reported to be involved in the pathogenesis of the disease. The aim of this study was to evaluate the expression of TLR2 and TLR4 mRNA in the colorectal mucosa of dogs with ICRPs by in-situ hybridization using an RNAscope assay. Samples of inflamed colorectal mucosa (n = 5) and non-inflamed mucosa (n = 5) from miniature dachshunds (MDs) with ICRPs and colonic mucosa from healthy beagles (n = 5) were examined. TLR2 and TLR4 hybridization signals were localized to the colorectal epithelium, inflammatory cells and fibroblasts in the inflamed colorectal mucosa of affected dogs. The signals were significantly greater in inflamed colorectal epithelium compared with non-inflamed epithelium of MDs with ICRPs and healthy beagles (P <0.05). These results suggest that increased expression of TLR2 and TLR4 mRNA in the inflamed colorectal mucosa results from not only inflammatory cell infiltration, but also the upregulation of TLR2 and TLR4 mRNA in the colonic epithelium.
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Affiliation(s)
- N Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - H Ohta
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - J Yamazaki
- Laboratory of Molecular Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - Y Kagawa
- Department of Diagnostic Pathology, Sapporo, Japan
| | - O Ichii
- Laboratory of Anatomy, Department of Biomedical Science, Sapporo, Japan
| | - N Khoirun
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - T Morita
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - T Osuga
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - S Y Lim
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - N Sasaki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan
| | - K Morishita
- Veterinary Teaching Hospital, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - K Nakamura
- Veterinary Teaching Hospital, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - M Takiguchi
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Sapporo, Japan.
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Krill L, Jandial D, Blair C, Ji T, Eskander R, Yokoyama N, Bristow R, Randall L, Zi X. Inhibition of the Wnt Pathway in Ovarian Cancer Tumorigenesis. Gynecol Oncol 2016. [DOI: 10.1016/j.ygyno.2016.08.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yokoyama N, Nakakubo K, Iwata K, Asaka K, Nakahara H, Saito Y. Field emission patterns showing symmetry of electronic states in graphene edges. SURF INTERFACE ANAL 2016. [DOI: 10.1002/sia.6089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Noboru Yokoyama
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
| | - Kazuya Nakakubo
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
| | - Kohji Iwata
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
| | - Koji Asaka
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
| | - Hitoshi Nakahara
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
| | - Yahachi Saito
- Department of Quantum Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
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Rizk M, El-Sayd S, Yokoyama N, Igarashi I. Optimization of a fluorescence-based assay for mass drug screening against Babesia and Theileria. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.223] [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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Osuga T, Nakamura K, Morita T, Lim SY, Nisa K, Yokoyama N, Sasaki N, Morishita K, Ohta H, Takiguchi M. Vitamin D Status in Different Stages of Disease Severity in Dogs with Chronic Valvular Heart Disease. J Vet Intern Med 2015; 29:1518-23. [PMID: 26332427 PMCID: PMC4895654 DOI: 10.1111/jvim.13606] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 03/09/2015] [Revised: 06/09/2015] [Accepted: 07/29/2015] [Indexed: 11/26/2022] Open
Abstract
Background In humans with heart disease, vitamin D deficiency is associated with disease progression and a poor prognosis. A recent study showed that serum 25‐hydroxyvitamin D [25(OH)D] concentration, the hallmark of vitamin D status, was lower in dogs with heart failure than in normal dogs, and a low concentration was associated with poor outcome in dogs with heart failure. Objectives To elucidate the vitamin D status of dogs with chronic valvular heart disease (CVHD) at different stages of disease severity. Animals Forty‐three client‐owned dogs with CVHD. Methods In this cross‐sectional study, dogs were divided into 3 groups (14 dogs in Stage B1, 17 dogs in Stage B2, and 12 dogs in Stage C/D) according to ACVIM guidelines. Dogs underwent clinical examination including echocardiography. Serum 25(OH)D concentrations were measured in each dog. Results Serum 25(OH)D concentration was significantly lower in Stage B2 (median, 33.2 nmol/L; range, 4.9–171.7 nmol/L) and C/D (13.1 nmol/L; 4.9–58.1 nmol/L) than in Stage B1 (52.5 nmol/L; 33.5–178.0 nmol/L) and was not significantly different between Stage B2 and Stage C/D. Among clinical variables, there were significant negative correlations between 25(OH)D concentration and both left atrial‐to‐aortic root ratio and left ventricular end‐diastolic diameter normalized for body weight. Conclusions and Clinical Importance These results indicate that vitamin D status is associated with the degree of cardiac remodeling, and the serum 25(OH)D concentration begins to decrease before the onset of heart failure in dogs with CVHD.
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Affiliation(s)
- T Osuga
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Nakamura
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - T Morita
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - S Y Lim
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Nisa
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - N Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - N Sasaki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - K Morishita
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - H Ohta
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - M Takiguchi
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
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Tonouchi A, Yokoyama N, Hashidate H, Matsuzawa N, Katayanagi N, Otani T. Education and Imaging. Gastroenterology: Carcinosarcoma of the gallbladder presenting as a cholecysto-colic fistula. J Gastroenterol Hepatol 2015; 30:1112. [PMID: 26094660 DOI: 10.1111/jgh.12906] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 12/09/2022]
Affiliation(s)
- A Tonouchi
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - N Yokoyama
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - H Hashidate
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - N Matsuzawa
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - N Katayanagi
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
| | - T Otani
- Department of Digestive Surgery, Niigata City General Hospital, Niigata, Japan
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Yokoyama N, Ishimura T. Usefulness of Three-Dimensional Computerized Tomographic Volumetry for Determining Split Renal Function in Donors for Living-Related Kidney Transplantation. Transplant Proc 2015; 47:588-90. [DOI: 10.1016/j.transproceed.2014.11.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 11/19/2014] [Indexed: 10/23/2022]
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Lim S, Nakamura K, Morishita K, Sasaki N, Murakami M, Osuga T, Yokoyama N, Ohta H, Yamasaki M, Takiguchi M. Quantitative contrast-enhanced ultrasonographic assessment of naturally occurring pancreatitis in dogs. J Vet Intern Med 2015; 29:71-8. [PMID: 25270302 PMCID: PMC4858112 DOI: 10.1111/jvim.12470] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/31/2014] [Accepted: 08/28/2014] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Quantitative contrast-enhanced ultrasonography (CEUS) can detect pancreatic perfusion changes in experimentally induced canine pancreatitis. However, its usefulness in detecting perfusion changes in naturally occurring pancreatitis is unclear. HYPOTHESIS/OBJECTIVES To determine the feasibility of using CEUS to detect pancreatic and duodenal perfusion changes in naturally occurring canine pancreatitis. ANIMALS Twenty-three client-owned dogs with pancreatitis, 12 healthy control dogs. METHODS Dogs diagnosed with pancreatitis were prospectively included. CEUS of the pancreas and duodenum were performed. Time-intensity curves were created from regions of interest in the pancreas and duodenum. Five perfusion parameters were obtained for statistical analyses: time to initial up-slope, peak time (Tp), time to wash-out (TTW), peak intensity (PI), and area under the curve (AUC). RESULTS For the pancreas, Tp of the pancreatitis group was prolonged when compared to controls (62 ± 11 seconds versus 39 ± 13 seconds; P < .001). TTW also was prolonged but not significantly (268 ± 69 seconds versus 228 ± 47 seconds; P = .47). PI and AUC were increased when compared to controls (95 ± 15 versus 78 ± 13 MPV; P = .009 and 14,900 ± 3,400 versus 11,000 ± 2,800 MPV*s; P = .013, respectively). For the duodenum, PI and AUC were significantly increased in the pancreatitis group when compared to controls. CONCLUSIONS AND CLINICAL IMPORTANCE Contrast-enhanced ultrasonography can detect pancreatic perfusion changes in naturally occurring canine pancreatitis characterized by delayed peak with prolonged hyperechoic enhancement of the pancreas on CEUS. Additionally, duodenal perfusion changes secondary to pancreatitis were observed.
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Affiliation(s)
- S.Y. Lim
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - K. Nakamura
- Hokkaido University Veterinary Teaching HospitalGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - K. Morishita
- Hokkaido University Veterinary Teaching HospitalGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - N. Sasaki
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - M. Murakami
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - T. Osuga
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - N. Yokoyama
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - H. Ohta
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - M. Yamasaki
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
| | - M. Takiguchi
- Laboratory of Veterinary Internal MedicineGraduate School of Veterinary MedicineHokkaido UniversityHokkaidoJapan
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Yokoyama N, Takaoka M. Nonlinear energy in a wave turbulence system. Proc Estonian Acad Sci 2015. [DOI: 10.3176/proc.2015.3s.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Nakamura K, Osuga T, Morishita K, Suzuki S, Morita T, Yokoyama N, Ohta H, Yamasaki M, Takiguchi M. Prognostic value of left atrial function in dogs with chronic mitral valvular heart disease. J Vet Intern Med 2014; 28:1746-52. [PMID: 25327889 PMCID: PMC4895618 DOI: 10.1111/jvim.12441] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [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: 02/14/2014] [Revised: 06/26/2014] [Accepted: 07/23/2014] [Indexed: 11/28/2022] Open
Abstract
Background A strong correlation between left atrial (LA) dysfunction and the severity of cardiac disease has been described in human patients with various cardiac diseases. The role of LA dysfunction in dogs with chronic mitral valvular heart disease (CMVHD) has not been addressed. Objectives To investigate the correlation between LA function and the prognosis of dogs with CMVHD. Animals Thirty‐eight client‐owned dogs with CMVHD. Methods Prospective clinical cohort study. Dogs were divided into 2 groups (survivors and nonsurvivors) based on the onset of cardiac‐related death within 1 year. Physical examination and echocardiographic variables were compared between the groups. For the assessment of the comparative accuracy in identifying patients with cardiac‐related death, receiver operating characteristic (ROC) curves and multivariate logistic analysis were used. Results The highest accuracy was obtained for the LA active fractional area change (LA‐FACact), with an area under the ROC curve (AUC) of 0.95, followed by the left atrial to aortic root ratio (LA/Ao), with an AUC of 0.94; peak early diastolic mitral inflow velocity (E), with an AUC of 0.85; and LA total fractional area change (LA‐FACtotal), with an AUC of 0.85. In the multivariate logistic regression analysis, LA‐FACact emerged as the only independent correlate of cardiac‐related death within 1 year (odds ratio = 1.401, P = .002). Conclusions and Clinical Importance Regarding both the size and function, the LA has a strong correlation with the prognosis of dogs with CMVHD. The most significant independent predictor of mortality in this study was LA‐FACact.
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Affiliation(s)
- K Nakamura
- Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Veterinary Teaching Hospital, Sapporo, Hokkaido, Japan
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Tsurumi K, Kawada R, Yokoyama N, Sugihara G, Murai T, Takahashi H. OR08-1 * INSULAR ACTIVATION DURING REWARD ANTICIPATION REFLECTS DURATION OF ILLNESS IN ABSTINENT PATHOLOGICAL GAMBLERS. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu053.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takemae H, Sugi T, Kobayashi K, Murakoshi F, Recuenco FC, Ishiwa A, Inomata A, Horimoto T, Yokoyama N, Kato K. Analyses of the binding between Theileria orientalis major piroplasm surface proteins and bovine red blood cells. Vet Rec 2014; 175:149. [PMID: 24943099 DOI: 10.1136/vr.102535] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- H Takemae
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - T Sugi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Kobayashi
- Division of Microbiology and Immunology, Department of Host-Parasite Interaction, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - F Murakoshi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - F C Recuenco
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - A Ishiwa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - A Inomata
- Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Horimoto
- Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - N Yokoyama
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - K Kato
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
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Yokoyama N, Yasuda R, Ichida K, Murakoshi H, Okada J, Yoshida S, Motoyama S. Recurrent peritoneal inclusion cysts successfully treated with oral contraceptives: a report of two cases. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog16202014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yokoyama N, Yasuda R, Ichida K, Murakoshi H, Okada J, Yoshida S, Motoyama S. Recurrent peritoneal inclusion cysts successfully treated with oral contraceptives: a report of two cases. CLIN EXP OBSTET GYN 2014; 41:83-86. [PMID: 24707692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To examine whether conservative treatment with oral contraceptives is effective in the shrinkage of a peritoneal inclusion cyst (PIC). This is a case report of two patients with a PIC that developed after gynecological surgery. CASES Both cases were suspected of a PIC based on the medical history, laboratory data, and image findings. It was difficult in differentiate a PIC from an ovarian tumor. Surgery was chosen at first. However, PICs in both cases recurred after surgery and were treated with oral contraceptives as a conservative treatment. PICs shrank after the treatment of oral contraceptives in both cases. CONCLUSION Due to the high rate of recurrence following surgery, conservative treatment is recommended to treat PICs. Hormone therapy using oral contraceptives seems to have some therapeutic benefit for the PICs.
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Yokoyama N, Niino M, Takahashi T, Matsushima M, Maruo Y. Seroconversion of neuromyelitis optica spectrum disorder with hyperCKemia: a case report. Eur J Neurol 2012; 19:e143. [DOI: 10.1111/j.1468-1331.2012.03880.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 08/21/2012] [Indexed: 11/29/2022]
Affiliation(s)
- N Yokoyama
- Department of Neurology; Hakodate City Hospital; Hakodate Japan
| | - M Niino
- Department of Clinical Research; Hokkaido Medical Center; Sapporo Japan
| | - T Takahashi
- Department of Neurology; Tohoku University Graduate School of Medicine; Sendai Japan
| | - M Matsushima
- Department of Neurology; Hakodate City Hospital; Hakodate Japan
| | - Y Maruo
- Department of Neurology; Hakodate City Hospital; Hakodate Japan
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Shirahige Y, Irie J, Ashizawa K, Yokoyama N, Ishikawa N, Mimura T, Ito K, Nagataki S. Immunohistochemical detection of nm23-H1/NDP kinase in childhood thyroid carcinoma. Oncol Rep 2012; 4:285-8. [PMID: 21590044 DOI: 10.3892/or.4.2.285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Childhood thyroid cancer is known to be aggressive. High incidence of lymph node and distant metastasis are characteristic features of these cases. In adult, reduced expression of nm23-H1/nucleoside diphosphate (NDP) kinase has been correlated with cancer invasion and metastasis in some tumor types. Therefore, we examined the expression of nm23-H1 gene product in childhood thyroid carcinomas in Japan. 27 primary thyroid carcinomas and 8 metastatic lymph nodes were analyzed by immunohistochemistry using monoclonal antibody H1-229. 21 out of 23 cases (91%) of papillary carcinomas were positively immunostained, whereas none of the 4 follicular carcinomas showed any immunoreactivity. No correlation was found between the nm23-H1/NDP kinase antigen expression and nodal involvement or distant metastasis in primary tumors. However, only 50% (4 out of 8) of metastatic lymph nodes from papillary carcinoma were positively stained, demonstrating a significant decrease comparing to those of primary sites. These data indicate that the expression of nm23-H1/NDP kinase cannot predict tumor metastatic potential in childhood thyroid cancer.
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Affiliation(s)
- Y Shirahige
- NAGASAKI UNIV,SCH MED,DEPT INTERNAL MED 1,NAGASAKI 852,JAPAN. NAGASAKI UNIV,SCH MED,DEPT PATHOL 2,NAGASAKI 852,JAPAN. ITO HOSP,SHIBUYA KU,TOKYO 150,JAPAN
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Igarashi I, Yokoyama N, Xuenan X. Recent progress of the diagnosis for equine piroplasmosis. J Equine Vet Sci 2012. [DOI: 10.1016/j.jevs.2012.08.127] [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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Kumagai K, Shimizu K, Yokoyama N, Aida S, Arima S, Aikou T. Questionnaire survey regarding the current status and controversial issues concerning reconstruction after gastrectomy in Japan. Surg Today 2012; 42:411-8. [PMID: 22391980 DOI: 10.1007/s00595-012-0159-z] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 09/19/2011] [Indexed: 12/11/2022]
Abstract
The Japanese Society for the Study of Postoperative Morbidity after Gastrectomy conducted a nationwide questionnaire survey to clarify the current status of reconstruction after gastrectomy. One hundred and forty-five institutions (66%) responded to the survey. The questionnaire dealt with the reconstruction after a distal gastrectomy, pylorus-preserving gastrectomy (PPG), total gastrectomy, and proximal gastrectomy. The most common method of reconstruction after distal gastrectomy was Billroth I in 112 institutions (74%), and Roux-en-Y (RY) in 30 (21%). Seventy-seven institutions (53%) responded to the PPG questions. The lengths of the antral cuff were widely distributed among the institutions. Segmental gastrectomy was performed by 23 institutions for limited cases. The most common method of reconstruction after total gastrectomy was RY in 138 institutions (95%). Reconstruction with a pouch after total gastrectomy was done in 26 institutions (18%). The most common reconstructions after proximal gastrectomy were esophagogastrostomy in 69 institutions (48%), jejunal interposition in 41 (28%), double tract in 19 (13%) and pouch reconstruction in 6 (7%). Although most Japanese surgeons are concerned about the revised methods of reconstruction and quality of life after gastrectomy, surgeons have not yet reached a full consensus on these issues.
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Affiliation(s)
- Kazuhide Kumagai
- Department of Surgery, Showa University Toyosu Hospital, 4-1-18 Toyosu, Koto-ku, Tokyo, Japan.
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Abstract
ABSTRACTRefractory suicides form high temperature stable Schottky contacts to GaAs. This finding enabled us to develop self-aligned GaAs MESFETs, thereby enabling the development of today's GaAs ICs. This paper reviews electrical and metallurgical studies on refractory-metal/GaAs and refractory-metal-si licide/GaAs interfaces. We emphasize the fact that W5Si3/GaAs contacts have extremely stable electrical properties even after annealing at temperatures up to 850°C. Crystallographical properties of the W5S3 film on GaAs, investigated by x-ray and TEM measurement techiques, are also covered. We found that the Schottky electrical characteristics are not affected by whether the film is amorphous or crystalline.
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Miyazawa T, Takemoto K, Nakaoka T, Saito T, Hirose S, Sakuma Y, Yokoyama N, Arakawa Y. Effect of electronic structure on single-photon emission in InAs/InP quantum dot with quasi-resonant excitation. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pssc.201000590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Nakamuta N, Yokoyama N, Yamamoto Y, Taniguchi K, Taniguchi K. Lectin histochemical analysis of the olfactory bulbs in the barfin flounder (Verasper moseri). Anat Histol Embryol 2009; 39:67-73. [PMID: 19922511 DOI: 10.1111/j.1439-0264.2009.00979.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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Several lines of evidence have shown that the olfactory system of the fish contains the main and accessory olfactory systems. However, morphological data indicate that the accessory olfactory bulb, the primary centre for the accessory olfactory system, will not differentiate in the fish. Therefore, the fish olfactory bulb is supposed to engage in both main and accessory olfactory systems. To examine this possibility, we investigated the olfactory bulb of the barfin flounder (Verasper moseri) by histochemical examination using lectins. The olfactory bulb of the barfin flounder showed a laminar structure with four layers, and diffuse glomerular architecture was observed in the glomerular layer. Based on the expression patterns of sugar residues, the glomerular layer of the barfin olfactory bulb was largely divided into three portions. Heterogeneity in the lectin-binding pattern among olfactory glomeruli was clearly demonstrated by the fluorescent double-lectin staining. The results of this study suggest that the fish olfactory bulb contains both regions equivalent to the main and accessory olfactory bulbs, and they are subdivided into small subsets with different functions.
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Hirabayashi H, Honda S, Morioka I, Yokoyama N, Sugiyama D, Nishimura K, Matsuo M, Negi A. Inhibitory effects of maternal smoking on the development of severe retinopathy of prematurity. Eye (Lond) 2009; 24:1024-7. [PMID: 19893590 DOI: 10.1038/eye.2009.263] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE In this study, the effects of maternal smoking along with other clinical risk factors in developing severe retinopathy of prematurity (ROP) were evaluated. DESIGN A case-control study. METHODS Records of newborn infants with an estimated postmenstrual age of 32 weeks or less (n=86) were reviewed. ROP grading was evaluated in accordance with the International Classification of Retinopathy of Prematurity. Severe ROP was diagnosed when it progressed to stage 3 with plus disease. The factors were first evaluated using a univariate logistic regression analysis between the groups of severe and non-severe ROP, followed by a multivariate logistic regression analysis using STATA version 10 and R version 2.71. RESULTS A low birth weight, a long duration of artificial ventilation and oxygen supplementation, presence of chronic lung disease, and absence of maternal smoking were found to be significantly associated with severe ROP in the univariate logistic regression analysis. In the multivariate logistic regression analysis, maternal smoking was revealed as a significant factor independently associated with the incidence of severe ROP. CONCLUSIONS An inhibitory effect of maternal smoking against developing severe ROP is suggested. The mechanism by which smoking may reduce the incidence of severe ROP needs to be further investigated.
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Affiliation(s)
- H Hirabayashi
- Division of Ophthalmology, Department of Surgery, Kobe University Graduate School of Medicine, Hyogo, Japan
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Terkawi MA, Zhang G, Jia H, Aboge G, Goo YK, Nishikawa Y, Yokoyama N, Igarashi I, Kawazu SI, Fujisaki K, Xuan X. C3 contributes to the cross-protective immunity induced by Babesia gibsoni phosphoriboprotein P0 against a lethal B. rodhaini infection. Parasite Immunol 2008; 30:365-70. [PMID: 18533933 DOI: 10.1111/j.1365-3024.2008.01026.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have studied the impact of complement component 3 (C3) deficiency on the progression of lethal Babesia rodhaini infection in immune mice. A B. gibsoni ribosomal phosphoprotein P0 (BgP0) previously reported to be a cross-protective antigen against Babesia infection was used to immunize C57BL/6 wild-type (WT) and C3-deficient (C3-/-) mice. Test mice were immunized intraperitoneally (i.p.) with recombinant BgP0 (rBgP0), while controls either were immunized with PBS or did not receive any immunization. Following the immunization regime, test WT mice induced a specifically strong humoral response consisting of mixed immunoglobulins IgG1 and IgG2 associated with high production of IFN-gamma in the supernatant of splenocytes. While test C3-/- mice had significantly decreased total IgG, IgG1 and IgG2b responses, the secretions of IL-12 and IFN-gamma tended to be lower than those in WT mice. Furthermore, partial protection was only observed in rBgP0-immunized WT mice but not in C3-/- mice or controls. Indeed, rBgP0-immunized WT mice showed significant reductions in the initiation of parasitaemia correlated with delayed mortalities and considerable survival rates. Taken together, our results indicate that cross-protection was impaired in C3-/- mice in view of the decrease in the antibody responses and cytokine production and the high susceptibility to infection.
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Affiliation(s)
- M A Terkawi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
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Abe Y, Kuroda Y, Kuboki N, Matsushita M, Yokoyama N, Kojima N. Contribution of Complement Component C3 and Complement Receptor Type 3 to Carbohydrate-dependent Uptake of Oligomannose-coated Liposomes by Peritoneal Macrophages. J Biochem 2008; 144:563-70. [DOI: 10.1093/jb/mvn101] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsunoda A, Yasuda N, Nakao K, Yokoyama N, Marumori T, Hashimoto H, Kusano M, West K. Validation of the Japanese version of EORTC QLQ-CR38. Qual Life Res 2007; 17:317-22. [DOI: 10.1007/s11136-007-9298-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 11/30/2007] [Indexed: 11/28/2022]
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Jang H, Kitazawa T, Ono M, Kawaguchi Y, Maeda K, Yokoyama N, Tohya Y, Niikura M, Mikami T. Protection studies against Marek's disease using baculovirus‐expressed glycoproteins B and C of Marek's disease virus type 1. Avian Pathol 2007; 25:5-24. [DOI: 10.1080/03079459608419116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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