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Seishima R, Miyata H, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Monno M, Yamashita Y, Inomata M, Wakabayashi G, Kakeji Y, Kitagawa Y, Watanabe M. Safety and feasibility of laparoscopic surgery for elderly rectal cancer patients in Japan: a nationwide study. BJS Open 2021; 5:6220252. [PMID: 33839748 PMCID: PMC8038266 DOI: 10.1093/bjsopen/zrab007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 01/14/2021] [Indexed: 11/30/2022] Open
Abstract
Background This study aimed to analyse the perioperative results from a national dataset of rectal cancer resections in elderly patients. Methods The clinical records of patients undergoing rectal cancer surgery between 2012 and 2014 were retrieved from the Japanese National Clinical Database and analysed retrospectively. Patients were categorized according to age and those 80 years or older were defined as elderly. Subgroups were also defined according to the surgical approach (laparoscopy versus open surgery). The short-term outcomes, including mortality, anastomotic leak, surgical site infections and medical complications were compared between subgroups. Results Of 56 175 patients undergoing rectal cancer surgery, some 6717 patients were elderly and laparoscopy was performed in 46.8 per cent of the sample. When comparing laparoscopy and open surgery in elderly patients, the operative mortality rate (1.5 versus 2.8 per cent; P < 0.001), the incidence of anastomotic leakage (5.2 versus 6.5 per cent; P = 0.026), surgical site infections (6.0 versus 8.0 per cent; P = 0.001), pneumonia (1.4 versus 2.5 per cent; P = 0.001), renal failure (0.7 versus 1.3 per cent; P = 0.016) and cardiac events (0.3 versus 0.8 per cent; P = 0.008) were lower for laparoscopy than for open surgery. The overall complication rate in elderly patients (19.5 per cent) was comparable to that in the younger group (P = 0.07). However, incidence of systemic complications was significantly higher in elderly than in younger patients (all P < 0.001). Conclusion Laparoscopy was safe and feasible in elderly patients compared with open surgery. However, the rates of systemic complications were significantly higher than in younger patients.
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Affiliation(s)
- R Seishima
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Miyata
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan
| | - K Okabayashi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Hasegawa
- Department of Surgery, Tokyo Dental College Ichikawa General Hospital, Ichikawa, Japan
| | - M Tsuruta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Shigeta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - M Monno
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Yamashita
- Department of Gastroenterological Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - M Inomata
- Department of Gastroenterological and Pediatric Surgery, Faculty of Medicine, Oita University, Yufu, Japan
| | - G Wakabayashi
- Department of Surgery, Ageo Central General Hospital, Ageo, Japan
| | - Y Kakeji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.,Database Committee, The Japanese Society of Gastroenterological Surgery
| | - Y Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan.,The Japanese Society of Gastroenterological Surgery
| | - M Watanabe
- Department of Surgery, Kitasato University Kitasato Institute Hospital, Sagamihara, Japan
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2
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Matsui S, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Ishida T, Yamada T, Kondo T, Yamauchi S, Sugihara K, Kitagawa Y. Effect of high ligation on survival of patients undergoing surgery for primary colorectal cancer and synchronous liver metastases. BJS Open 2020; 4:508-515. [PMID: 32243733 PMCID: PMC7260402 DOI: 10.1002/bjs5.50274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/29/2020] [Accepted: 02/03/2020] [Indexed: 11/25/2022] Open
Abstract
Background Although R0 surgery is recommended for stage IV colorectal cancer, the degree of required lymphadenectomy has not been established. The aim of this study was to investigate the prognostic impact of high ligation (HL) of the feeding artery and the number of retrieved lymph nodes after R0 surgery for colorectal cancer and synchronous colorectal cancer liver metastasis (CRLM). Methods This was a multi‐institutional retrospective analysis of patients with colorectal cancer and synchronous CRLM who had R0 surgery between January 1997 and December 2007. Clinical and pathological features were compared in patients who underwent HL and those who had a low ligation (LL). Kaplan–Meier analysis was performed to estimate the effect of HL on overall survival (OS). The impact of several risk factors on survival was analysed using the Cox proportional hazards model. Results Of 549 patients, 409 (74·5 per cent) had HL. Median follow‐up was 51·4 months. HL significantly improved the 5‐year OS rate (58·2 per cent versus 49·3 per cent for LL; P = 0·017). Multivariable analysis revealed HL to be a significant prognostic factor compared with LL (5‐year mortality: hazard ratio (HR) 0·68, 95 per cent c.i. 0·51 to 0·90; P = 0·007). In subgroup analysis, the positive effect of HL on OS was greatest in patients with lymph node metastasis. Conclusion HL of the feeding artery was associated with improved OS in patients with colorectal cancer and synchronous CRLM after R0 surgery.
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Affiliation(s)
- S Matsui
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Okabayashi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Hasegawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan.,Department of Surgery, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
| | - M Tsuruta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Shigeta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - T Ishida
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - T Yamada
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - T Kondo
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - S Yamauchi
- Department of Surgical Oncology, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Sugihara
- Department of Surgical Oncology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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3
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Oka H, Ito Y, Goto T, Minami T, Yamamoto I, Matsumoto H, Mizuno Y, Tsuruta M, Hayashi I. Survey of Residual Tetracycline Antibiotics and Sulfa Drugs in Kidneys of Diseased Animals in the Aichi Prefecture, Japan (1995–1999). J AOAC Int 2019. [DOI: 10.1093/jaoac/86.3.494] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Animal kidneys were collected in order to survey the incidence of tetracycline (TC) antibiotics and sulfa (SA) drug residues in slaughtered animals that did not pass inspection for human consumption by the Japanese Food Sanitation Law and the Meat Inspection Law at the slaughterhouses in Aichi Prefecture, Japan, from April 1995 to March 2000. The kidneys were analyzed by AOAC Official Method 995.09 for TCs and our previously reported liquid chromatographic method for SAs. Among 292 animals (94 cattle and 198 pigs), 106 (36.6%) and 41 (14.0%) contained TCs and SAs, respectively, including chlortetracycline, 59 (20.2%); oxytetracycline, 47 (16.1%); sulfamonomethoxine, 35 (12.0%); sulfadimethoxine and sulfamethoxazole, each 2 (0.7%); and sulfamerazine and sulfisoxazole, each 1 (0.3%). A small number of animals (5 cattle and 9 pigs) contained more than one drug residue. The frequency of residue detections was significantly higher for TCs than SAs in both cattle and pig kidneys (p < 0.001).
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Affiliation(s)
- Hisao Oka
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Yuko Ito
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Tomomi Goto
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Tamae Minami
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Isao Yamamoto
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Hiroshi Matsumoto
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan
| | - Yoshihisa Mizuno
- Aichi Prefectural Food Inspection Office, Hattan, Toyoba, Toyoyama-cho, Nishikasugai-gun, Aichi 480-0202, Japan
| | - Masukiyo Tsuruta
- Aichi Prefectural Food Inspection Office, Hattan, Toyoba, Toyoyama-cho, Nishikasugai-gun, Aichi 480-0202, Japan
| | - Itsuki Hayashi
- Aichi Prefectural Food Inspection Office, Hattan, Toyoba, Toyoyama-cho, Nishikasugai-gun, Aichi 480-0202, Japan
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Tsuruta M, Fukushima S, Hayano S, Yoshikawa T, Kawabe K, Makino T, Jinnin M, Ihn H. 456 Secreted Protein Acidic and Rich in Cysteine, a new biomarker of localized scleroderma. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.652] [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: 10/18/2022]
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5
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Yahagi M, Tsuruta M, Hasegawa H, Okabayashi K, Toyoda N, Iwama N, Morita S, Kitagawa Y. Smoking is a risk factor for pulmonary metastasis in colorectal cancer. Colorectal Dis 2017; 19:O322-O328. [PMID: 28755421 DOI: 10.1111/codi.13833] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 06/14/2017] [Indexed: 12/13/2022]
Abstract
AIM The hepatic microenvironment, which may include chronic inflammation and fibrosis, is considered to contribute to the pathogenesis of liver metastases of colorectal cancer. A similar mechanism is anticipated for pulmonary metastases, although no reports are available. Smoking causes pulmonary inflammation and fibrosis. Thus, we hypothesized that smokers would be especially affected by pulmonary metastases of colorectal cancer. In this study, we attempted to clarify the impact of smoking on pulmonary metastasis of colorectal cancer. METHOD Between September 2005 and December 2010 we reviewed 567 patients with pathological Stage I, II or III colorectal cancer, whose clinicopathological background included a preoperative smoking history, pack-year history from medical records. Univariate and multivariate analyses using the Cox proportional hazard model were performed to determine the independent prognostic factors for pulmonary metastasis-free survival. RESULTS Pulmonary metastases occurred in 39 (6.9%) patients. The smoking histories revealed 355 never smokers, 119 former smokers and 93 current smokers among the subjects. Multivariate analysis revealed that being a current smoker (hazard ratio = 2.72, 95% CI 1.18-6.25; P = 0.02) was an independent risk factor for pulmonary metastases. CONCLUSION Smoking may be a risk factor for pulmonary metastasis of colorectal cancer. Cessation of smoking should be recommended to prevent pulmonary metastasis, although further basic and clinical studies are required.
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Affiliation(s)
- M Yahagi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - M Tsuruta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Hasegawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Okabayashi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - N Toyoda
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - N Iwama
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - S Morita
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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6
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Hasegawa H, Okabayashi K, Tsuruta M, Koike J, Funahashi K, Yokomizo H, Yoshimatsu K, Kan H, Yamada T, Ishida H, Ishibashi K, Saida Y, Enomoto T, Katsumata K, Koda K, Ochiai T, Sakamoto K, Ogawa S, Itabashi M, Kameoka S. Updated survival results of FACT trial: Multicenter phase II trial of neoadjuvant chemotherapy with mFOLFOX6 for stage II/III rectal cancer with a T3/T4 tumor. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Yamada T, Okabayashi K, Hasegawa H, Tsuruta M, Yoo JH, Seishima R, Kitagawa Y. Meta-analysis of the risk of small bowel obstruction following open or laparoscopic colorectal surgery. Br J Surg 2016; 103:493-503. [DOI: 10.1002/bjs.10105] [Citation(s) in RCA: 39] [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: 06/17/2015] [Revised: 12/13/2015] [Accepted: 12/14/2015] [Indexed: 12/17/2022]
Abstract
Abstract
Background
One of the potential advantages of laparoscopic compared with open colorectal surgery is a reduction in postoperative bowel obstruction events. Early reports support this proposal, but accumulated evidence is lacking.
Methods
A systematic review and meta-analysis was performed of randomized clinical trials and observational studies by searching the PubMed and Cochrane Library databases from 1990 to August 2015. The primary outcomes were early and late postoperative bowel obstruction following laparoscopic and open colorectal surgery. Both ileus and bowel obstruction were defined as a postoperative bowel obstruction. Subgroup and sensitivity analyses were performed, and a random-effects model was used to account for the heterogeneity among the studies.
Results
Twenty-four randomized clinical trials and 88 observational studies were included in the meta-analysis; 106 studies reported early outcome and 12 late outcome. Collectively, these studies reported on the outcomes of 148 392 patients, of whom 58 133 had laparoscopic surgery and 90 259 open surgery. Compared with open surgery, laparoscopic surgery was associated with reduced rates of early (odds ratio 0·62, 95 per cent c.i. 0·54 to 0·72; P < 0·001) and late (odds ratio 0·61, 0·41 to 0·92; P = 0·019) postoperative bowel obstruction. Weighted mean values for early postoperative bowel obstruction were 8 (95 per cent c.i. 6 to 10) and 5 (3 to 7) per cent for open and laparoscopic surgery respectively, and for late bowel obstruction were 4 (2 to 6) and 3 (1 to 5) per cent respectively.
Conclusion
The reduction in postoperative bowel obstruction demonstrates an advantage of laparoscopic surgery in patients with colorectal disease.
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Affiliation(s)
- T Yamada
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Okabayashi
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Hasegawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - M Tsuruta
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - J-H Yoo
- Department of Surgery, National Hospital Organization Saitama National Hospital, 2–1 Suwa Wako, Saitama, Japan
| | - R Seishima
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
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8
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Oka H, Ito Y, Goto T, Minami T, Yamamoto I, Matsumoto H, Mizuno Y, Tsuruta M, Hayashi I. Survey of residual tetracycline antibiotics and sulfa drugs in kidneys of diseased animals in the Aichi Prefecture, Japan (1995-1999). J AOAC Int 2003; 86:494-500. [PMID: 12852565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Animal kidneys were collected in order to survey the incidence of tetracycline (TC) antibiotics and sulfa (SA) drug residues in slaughtered animals that did not pass inspection for human consumption by the Japanese Food Sanitation Law and the Meat Inspection Law at the slaughterhouses in Aichi Prefecture, Japan, from April 1995 to March 2000. The kidneys were analyzed by AOAC Official Method 995.09 for TCs and our previously reported liquid chromatographic method for SAs. Among 292 animals (94 cattle and 198 pigs), 106 (36.6%) and 41 (14.0%) contained TCs and SAs, respectively, including chlortetracycline, 59 (20.2%); oxytetracycline, 47 (16.1%); sulfamonomethoxine, 35 (12.0%); sulfadimethoxine and sulfamethoxazole, each 2 (0.7%); and sulfamerazine and sulfisoxazole, each 1 (0.3%). A small number of animals (5 cattle and 9 pigs) contained more than one drug residue. The frequency of residue detections was significantly higher for TCs than SAs in both cattle and pig kidneys (p < 0.001).
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Affiliation(s)
- Hisao Oka
- Aichi Prefectural Institute of Public Health, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan.
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9
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Abstract
This article reports on the treatment for a 24 year 9 month adult female patient with severe skeletal Class III and crowding. As the patient wanted to wear an invisible appliance treatment we provided treatment with lingual brackets.
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Affiliation(s)
- T Fukui
- Department of Orthodontics, School of Dental Medicine, Tsurumi University, Yokohama, Japan.
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10
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Fukui T, Tsuruta M, Murata K, Wakimoto Y, Tokiwa H, Kuwahara Y. Correlation between facial morphology, mouth opening ability, and condylar movement during opening-closing jaw movements in female adults with normal occlusion. Eur J Orthod 2002; 24:327-36. [PMID: 12198862 DOI: 10.1093/ejo/24.4.327] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The aim of this study was to investigate the relationship between parameters of facial morphology, maximal voluntary mouth opening ability, and condylar movements in 21 adult females, aged between 20 and 24 years. The subjects had a normal occlusion without sign or symptoms of temporomandibular joint (TMJ) dysfunction. Mandibular movements were recorded using an opto-electric jaw movement recording system with six degrees of freedom under a series of maximal mouth opening-closing movements. Maximal jaw opening and coincident condylar movement were measured three-dimensionally. The mean values of the incisor and condylar path were 41.1 +/- 3.5 mm (range 35.6-50.9 mm) and 12.8 +/- 2.8 mm (range 8.1-19.2 mm), respectively. Although the positive correlation between maximal jaw opening and facial morphology was significant, none of the variables significantly differed between the value of the condylar path and facial morphology. The length of the path of maximum incisor movement and the condylar path during mandibular movement also did not correlate. Stepwise multiple regression analysis indicated a positive association between the maximal length of the incisor path and the cephalometric value of mandibular ramus inclination (R2 value was 0.369). The results of this study suggest that facial morphology size has a limited effect on maximal voluntary mandibular opening and condylar movements in normal adult female subjects.
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Affiliation(s)
- T Fukui
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
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11
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Yoshizawa A, Gyouda Y, Ishiguro T, Yoshida S, Yoshizawa T, Narita I, Tsuruta M, Fukumoto Y. [Indication of home oxygen therapy for terminal cancer patients--comparison with present standards--as the result from investigation of our patients and questionnaire survey to home care doctors]. Gan To Kagaku Ryoho 2001; 28 Suppl 1:46-8. [PMID: 11787295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
As the result of the observation of our patients and a questionnaire answered by home care doctors, we think it is necessary to establish new standards for home oxygen therapy, based on the characteristics of terminal cancer patients and to put great emphasis on the QOL of patients.
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12
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Fujiura Y, Adachi H, Tsuruta M, Jacobs DR, Hirai Y, Imaizumi T. Heart rate and mortality in a Japanese general population: an 18-year follow-up study. J Clin Epidemiol 2001; 54:495-500. [PMID: 11337213 DOI: 10.1016/s0895-4356(00)00323-1] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The predictive power of elevated heart rate for total mortality was evaluated in a Japanese general population. A total of 573 male participants, aged 40 to 64, who underwent a health examination in 1977, were followed until 1994. Heart rate (beats per minute; bpm) was measured using an electrocardiogram. During the 18 years, 82 subjects died; 18 from cerebro-cardiovascular diseases and 36 from cancer. In a multivariate proportional hazards regression model, age, elevated systolic and diastolic blood pressures, antihypertensive medication, heart rate, uric acid, vital capacity (inversely), and serum cholesterol (inversely) were significantly associated with all-cause death. Of these variables, elevated heart rate was the strongest predictor of all-cause death after adjustment for age. Resting heart rate levels were classified into five groups: < 60 (G1), 60-69 (G2), 70-79 (G3), 80-89 (G4), and > or = 90 (G5) bpm. Heart rates of 60-69 (G2) bpm showed the lowest death rate (14.3%) and heart rate > or = 90 (G5) bpm showed the highest death rate (38.2%) after adjustments for age and other confounding factors. The relative risk of G2 versus G5 was 2.68. An increased mortality risk was shown in men whose heart rate was > or = 90 bpm. Moreover, a continuous model suggested a graded increase in risk, so that risk is likely elevated even for heart rates less than 90 bpm, and lowest risk may be around 60 bpm.
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Affiliation(s)
- Y Fujiura
- The Third Department of Internal Medicine, The Cardiovascular Research Institute, Kurume University School of Medicine, 67 Asahi-machi, 830-0011, Kurume City, Fukuoka, Japan
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13
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Abstract
Pre- and postmenopausal cholesterol (mg/dl), body mass index (BMI; kg/m(2)), and systolic blood pressure (SBP; mmHg) levels were compared in three age-at-time-of-menopause (ATM) groups to examine the relationship between the three risk factors and age ATM. Cholesterol, BMI, and SBP levels recorded 4 years prior to and 8 years after menopause were examined and increases in these risk factors between the two measurements were noted. The three age groups were: group A (n=49; age ATM [44+/-1]<45), group B (n=395; 45< or =age ATM [48+/-1]<50), and group C (n=578; age ATM [52+/-2]> or =50). Cholesterol levels in premenopausal groups A (169+/-31 mg/dl, 40 years) and B (174+/-31, 44 years) were lower than those in group C (179+/-30, 48 years) (0.05< or =P<0.1 and P<0.05). Because, the increases in cholesterol were greater in group A (41+/-28 mg/dl) than in groups B (32+/-28) and C (29+/-28) (0.05< or =P<0.1 and P<0.05), cholesterol levels were identical among groups despite age differences upon reaching the postmenopause phase: group A (210+/-34, 51 years), group B (206+/-35, 56 years) and group C (208+/-35, 60 years). BMI and SBP increases were not different in groups A, B, and C. Differences in BMI and SBP levels among groups in order of premenopausal age were still observed after menopause. These data suggest that the greater increase in cholesterol associated with early menopause may be related to a higher prevalence of ischemic heart disease (IHD) in younger menopausal women.
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Affiliation(s)
- M Akahoshi
- Department of Clinical Studies, Radiation Effects Research Foundation, 8-6 Nakagawa 1-chome, Nagasaki 850-0013, Japan.
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Abstract
Insulin resistance and/or diabetes are risk factors for coronary artery disease. However, it is still controversial whether they are associated with the development of stroke. A total of 304 Japanese men and women, aged 20-69 years, were selected on the basis of casual high blood glucose concentrations from 2732 participants of a population-based health examination in 1980. They all underwent a 50 g oral glucose tolerance test in 1981. Homa IR (index of insulin resistance) and Homa beta-cells (index of beta-cell function) were calculated from their fasting insulin and glucose using the formulas for the homeostasis model. They were followed-up for 18 years. Incidence of stroke was investigated by computed tomography. During 18 years, 28 subjects had a stroke; 21 had ischemic and nine had hemorrhagic strokes (two had both). Baseline variables, which showed an independent association with the incidence of stroke in the Cox proportional hazard model, were blood pressure, use of anti-hypertensive medications, and Homa beta-cell index (inversely) after adjustments for age and sex. After further adjustment for blood pressure using a step-forward method, Homa beta-cell was significantly related to the incidence of stroke (Hazard ratio: 0.65, 95% confidence interval: 0.44-0.95). In addition to hypertension, diabetes but not insulin resistance, is a risk factor for stroke.
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Affiliation(s)
- H Adachi
- Third Department of Internal Medicine, Cardiovascular Research Institute, Kurume University School of Medicine, 67 Asahi-machi, Kurume, 830-0011, Japan.
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15
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Adachi H, Goetz FC, Jacobs DR, Tsuruta M, Hirai Y, Fujiura Y, Imaizumi T. The role of obesity in the association of cardiovascular risk factors and glucose intolerance in small Japanese and North American communities. Diabetes Res Clin Pract 2000; 49:41-51. [PMID: 10808062 DOI: 10.1016/s0168-8227(00)00133-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To investigate whether the influence of obesity on cardiovascular risk factors and glucose intolerance differs between Japan and the US, we conducted cross-sectional surveys in those with elevated plasma glucose in Tanushimaru, Japan, and a stratified random population sample, in Wadena, MN. Subjects numbered 204 in Tanushimaru and 334 in Wadena. Body mass index (BMI), blood pressure, blood lipids, fasting plasma levels of glucose, glycosylated hemoglobin A(1c,) insulin, and free fatty acids were assessed. Overweight was defined as BMI of 27.5-29.9 kg/m(2) and obesity as BMI> or =30 kg/m(2). Gradual increases in risk factors were seen as BMI increased in both studies. Most risk factors were associated with glucose intolerance, except for BMI in Tanushimaru. In Wadena, glucose intolerance increased sharply among the obese. Adjustment for BMI attenuated the associations of cardiovascular risk factors with glucose intolerance in Wadena, but not in Tanushimaru. Obesity has an exaggerated influence on risk factors, compared with being overweight. The associations of glucose intolerance with cardiovascular risk factors are more affected by adjustment for BMI in Wadena than in Tanushimaru, not because of a different influence of body weight on risk factors between the two cities, but because obesity is rare in Japan.
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Affiliation(s)
- H Adachi
- The Third Department of Internal Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, Japan
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Tsuruta M, Adachi H, Hirai Y, Fujiura Y, Imaizumi T. Association between alcohol intake and development of hypertension in Japanese normotensive men: 12-year follow-up study. Am J Hypertens 2000; 13:482-7. [PMID: 10826398 DOI: 10.1016/s0895-7061(99)00238-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
Although it has been suggested that alcohol intake is related to hypertension, few long-term prospective studies have investigated this relationship. We therefore conducted a prospective study in male residents of a farming community in Japan to determine whether heavy drinking would predispose to the development of hypertension. A total of 325 normotensive (< 140/90 mm Hg) men were enrolled in 1977. Twelve years later, 93 (28.6%) subjects became hypertensive (defined as blood pressure > or = 140/90 mm Hg or use of antihypertensive medication). The probability of the development of hypertension in heavy drinkers predicted from a logistic regression equation was 44.6% (relative risk: 2.05 versus nondrinkers) after adjusting for age and body mass index (BMI). It was 36.2% (relative risk: 1.86 versus nondrinkers) after a further adjustment for systolic blood pressure at baseline. A high odds ratio of 2.39 for the development of hypertension with alcohol intake of < 46 g/day versus > or = 46 g/day at baseline was obtained even after adjustments for age, BMI, and confounding factors. We conclude that habitual heavy drinking of alcohol is a risk factor for the development of hypertension. This is the first report demonstrating a significant relationship between habitual alcohol intake and the development of hypertension in a long-term prospective study in Japan.
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Affiliation(s)
- M Tsuruta
- The Third Department of Internal Medicine, and The Cardiovascular Research Institute, Kurume University School of Medicine, Japan.
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17
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Fukui T, Tsuruta M, Yong-Bong C, Kuwahara Y. Multilingual bracket treatment combined with orthognathic surgery in a skeletal class III patient with facial asymmetry. Am J Orthod Dentofacial Orthop 1999; 115:654-9. [PMID: 10358248 DOI: 10.1016/s0889-5406(99)70291-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
A case report is presented on a female adult with a Class III mandibular protrusion. Resolution of her dentoskeletal problem required a combination of comprehensive multibonded orthodontic mechanotherapy and orthognathic surgery. The patient preferred a multilingual bracket appliance because of esthetics. Both surgical and orthodontic treatment were quite successful in the correction of the facial profile and occlusion. Both psychological and esthetic satisfaction were achieved.
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Affiliation(s)
- T Fukui
- Department of Orthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan
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18
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Abstract
To determine the selectivity of long-chain fatty acid (LCFA) in the oral cavity, short-term (5 min) two-bottle tests were conducted in rats. Fifteen male Wistar rats were given oleic acid, linoleic acid, linolenic acid, and their derivatives. All compounds used were 99% pure. The concentration of test fluids was made 1% in 0.3% xanthan gum to minimize postingestive and textural effects. The rats preferred LCFA fluids to the control of 0.3% xanthan gum solution. The preference order of LCFA was linolenic acid > linoleic acid > oleic acid. Four LCFA derivatives (methyl oleate, oleyl alcohol, methyl linoleate, and linolyl alcohol), triolein, and capric acid were not preferred to LCFA, but LCFA derivatives were preferred to the control of xanthan gum solution. These studies suggest that rats select LCFA from olfactory or gustatory cues that are related to both the carbon chain and carboxylate group.
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Affiliation(s)
- M Tsuruta
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Japan
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19
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Tsuruta M, Utsunomiya T, Yoshida K, Ogata T, Tsuji S, Tokushima T, Higuchi H, Matsuo S. Effect of ticlopidine on exercise-induced platelet aggregation and exercise tolerance time in patients with ischemic heart disease. J Cardiovasc Pharmacol 1999; 33:659-64. [PMID: 10218739 DOI: 10.1097/00005344-199904000-00021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Platelet aggregation is one of the most important mechanisms for acute myocardial infarction during exercise. We sought to evaluate the effect of ticlopidine (TP) on platelet aggregation (PA) during exercise in patients with ischemic heart disease (IHD). We studied 38 patients with IHD, 26 patients with effort angina pectoris, and 12 patients with a previous myocardial infarction. In protocol I, subjects were divided into two groups. Drugs altering platelet aggregation were withheld 2-4 weeks before the study in 25 patients (control group). TP (200 mg/day) was administered for 7 days in 13 patients (ticlopidine group). A symptom-limited modified Bruce protocol treadmill exercise test was performed. PA was measured at rest and after exercise by using optical densitometry induced by adenosine diphosphate (ADP). PA ratio (percentage of maximum) was compared. In protocol II, in 12 patients, treadmill exercise test and PA measurement were performed with and without TP. PA significantly increased after exercise in control (from 51.7+/-23.3% to 64.4+/-27.7%, p < 0.01) and ticlopidine (from 31.9+/-10.5% to 42.0+/-20.4%, p < .01) groups; however, its grade was lower in the ticlopidine group than in the control group. After exercise, PA was lower in the ticlopidine group than in control group (42.0+/-20.4% vs. 64.4+/-27.7%; p < 0.01). In the same patients, PA was lower with TP than without TP after exercise. Treadmill exercise-tolerance time was greater in the ticlopidine group than in the control group, but not statistically significant (762.3+/-139.2 vs. 711.6+/-169.6 s; NS). Exercise-tolerance time was significantly greater with TP than without TP in same patient (791.7+/-98.9 vs. 733.3+/-152.8 s; p < .05). TP suppressed the increase of PA during exercise and increased the exercise-tolerance time in patients with IHD.
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Affiliation(s)
- M Tsuruta
- Department of Internal Medicine, Saga Medical School, Japan
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20
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Tsuruta M, Mitsubuchi H, Mardy S, Miura Y, Hayashida Y, Kinugasa A, Ishitsu T, Matsuda I, Indo Y. Molecular basis of intermittent maple syrup urine disease: novel mutations in the E2 gene of the branched-chain alpha-keto acid dehydrogenase complex. J Hum Genet 1998; 43:91-100. [PMID: 9621512 DOI: 10.1007/s100380050047] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The E2 gene of the branched-chain alpha-keto acid dehydrogenase (BCKDH) complex was studied at the molecular level in three patients with intermittent maple syrup urine disease (MSUD). All three patients had higher BCKDH activity than did those with the classical phenotype. In the first patient, a single base substitution from A to G in intron 8 created a new 5' splice site and caused an insertion of 126 nucleotides between exons 8 and 9 by activating an upstream cryptic 3' splice site in the same intron. The predicted mRNA encoded a truncated protein with 282 amino acids including 4 novel ones at the carboxyl terminus, compared with the normal protein with 421 amino acids. In vitro, the region from the patient but not from a normal control was recognized and was recovered as a novel exon, indicating that the single substitution was responsible for incorporation of the region into mRNA. This mutation probably supports an exon definition model in which the spliceosome recognizes a 3' splice site and then scans downstream for an acceptable 5' splice site, thereby defining an exon. The second patient was homozygous for a G to T transversion at nucleotide 1463 in exon 11, which predicted a substitution of the termination codon by a leucine residue and the addition of 7 extra amino acids at the carboxyl terminus. For each mutation, these two patients were homozygous and their parents were heterozygous. The third patient was a compound heterozygote for a C to G transversion at nucleotide 309 in exon 4 and a G to A transition at nucleotide 1165 in exon 9, causing an Ile-to-Met substitution at amino acid 37 and a Gly-to-Ser substitution at amino acid 323, respectively. Taken together, these results indicate that the molecular basis of intermittent phenotype MSUD in some patients can be due to mutations in the E2 gene, giving rise to a low but significant residual activity of the BCKDH complex.
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Affiliation(s)
- M Tsuruta
- Department of Pediatrics, Kumamoto University School of Medicine, Japan
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21
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Abstract
Clustering of cardiovascular risk factors in hyperinsulinemia was investigated in 247 Japanese subjects without diabetes. After adjustment for age and sex, the highest quartile of the summed values of insulin concentrations after oral glucose loading showed high odds ratios (OR; 95% confidence intervals) for the prevalence of cardiovascular risk factors: OR = 2.02 (1.07-3.83) for hypertension, 3.91 (1.82-8.40) for hypertriglyceridemia, 2.41 (1.30-4.46) for low high-density lipoprotein cholesterol, 2.41 (1.28-4.51) for impaired glucose tolerance, and 3.58 (1.44-8.88) for high uric acid. Two or more of these factors were clinically elevated in 50% of those in the highest quartile of the summed values of insulin, compared to 16-28% of those in the lower three quartiles. These findings were slightly attenuated after further adjustment for body mass index and sum of skinfolds. In conclusion, multiple risk factors for cardiovascular disease existed in the subjects with hyperinsulinemia in Japanese without diabetes.
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Affiliation(s)
- H Adachi
- Third Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan
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22
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Adachi H, Hashimoto R, Tsuruta M, Jacobs DR, Crow RS, Imaizumi T. Hyperinsulinemia and the development of ST-T electrocardiographic abnormalities. An 11-year follow-up study. Diabetes Care 1997; 20:1688-92. [PMID: 9353609 DOI: 10.2337/diacare.20.11.1688] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE It has been suggested that insulin resistance and consequent hyperinsulinemia promote atherosclerosis, but few prospective studies have reported the relationships between hyperinsulinemia and the development of ST-T abnormalities in the 12-lead resting electrocardiogram (ECG) in populations in which atherosclerosis is rare. RESEARCH DESIGN AND METHODS A total of 304 Japanese men and women, aged 20-69 years, selected for having high blood glucose or more than a trace-positive urine glucose from a population-based health examination in 1981, were followed for 11 years. Of these, 33 died, 1 from myocardial infarction, while 260/271 living were reexamined in 1992. The 237 subjects with a normal ECG at the baseline examination were analyzed. RESULTS Incident ST-T abnormalities occurred in 13/237 people. Insulin concentrations were positively associated with the development of ST-T abnormalities (relative risk approximately 8, comparing those in the highest versus lowest quartile of insulin values). Adjustment for age, sex, and systolic blood pressure or other risk factors had little effect on this relationship. CONCLUSIONS Hyperinsulinemia was related to the development of ST-T abnormalities in ECGs in the absence of the development of clinical signs of atherosclerosis, independent of blood pressure and other risk factors in men and women with mild glucose intolerance.
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Affiliation(s)
- H Adachi
- Third Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan
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23
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Nakazato H, Hattori S, Furuse A, Kawano T, Karashima S, Tsuruta M, Yoshimuta J, Endo F, Matsuda I. Mutations in the CLCN5 gene in Japanese patients with familial idiopathic low-molecular-weight proteinuria. Kidney Int 1997; 52:895-900. [PMID: 9328927 DOI: 10.1038/ki.1997.410] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Familial idiopathic low-molecular-weight proteinuria (FILMWP) is a renal proximal tubulopathy that occurs predominantly in males. FILMWP is characterized by mild proteinuria consisting of low-molecular-weight proteinuria, aminoaciduria and relatively conserved renal function, but without rickets. To determine whether FILMWP is related to the CLCN5 gene, which is responsible for Dent's disease and two related disorders, we analyzed the CLCN5 gene from four Japanese families with FILMWP. We identified two novel mutations: one was a single base insertion at codon 520 serine in exon 10 and the other was a single base deletion at codon 403 tyrosine in exon 8. These mutations caused a shift in the reading frame, resulting in synthesis of truncated CLC5 proteins that lacked 220 (29%) and 314 (42%) amino acids, respectively. These mutations were demonstrated to cosegregate with the disease in two families, respectively. We conclude that the CLCN5 gene is responsible for this proximal renal tubulopathy in some Japanese families and that FILMWP is possibly a variant of Dent's disease.
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Affiliation(s)
- H Nakazato
- Department of Pediatrics, Kumamoto University School of Medicine, Japan
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24
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Fukuwatari T, Kawada T, Tsuruta M, Hiraoka T, Iwanaga T, Sugimoto E, Fushiki T. Expression of the putative membrane fatty acid transporter (FAT) in taste buds of the circumvallate papillae in rats. FEBS Lett 1997; 414:461-4. [PMID: 9315741 DOI: 10.1016/s0014-5793(97)01055-7] [Citation(s) in RCA: 195] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The putative membrane fatty acid transporter (FAT) protein and its mRNA, originally expressed in adipose tissue, were found in the tongue of rats. Northern blot analysis showed a significant expression of FAT mRNA in the epithelial layer of circumvallate papillae. Immunohistochemical staining revealed that immunoreactivity for FAT is specifically localized in the apical part of taste bud cells, possibly gustatory cells, in the circumvallate papillae.
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Affiliation(s)
- T Fukuwatari
- School of Human Culture, University of Shiga Prefecture, Hikone, Japan
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25
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Indo Y, Mardy S, Tsuruta M, Karim MA, Matsuda I. Structure and organization of the human TRKA gene encoding a high affinity receptor for nerve growth factor. Jpn J Hum Genet 1997; 42:343-51. [PMID: 9290260 DOI: 10.1007/bf02766957] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Nerve growth factor (NGF) induces neurite outgrowth and promotes survival of embryonic sensory and sympathetic neurons. TRKA, a receptor tyrosine kinase cloned from a human colon cancer was later found to be expressed in the nervous system and phosphorylated in response to NGF. Somatic rearrangement(s) of the TRKA gene (also designated NTRK1) are responsible for formation of some oncogenes. Genetic defects in TRKA are responsible for a human disorder, congenital insensitivity to pain with anhidrosis (CIPA). We report here isolation and characterization of the TRKA gene which spans at least 23 kb and is split into 17 exons. Exon sizes range from 18 to 394 bp and intron sizes range from 170 bp to at least 3.3 kb. Sizes and boundaries of the exons were determined, and all the splice donor and acceptor sites conformed to the GT/AG rule. Approximately 1.2 kb of the 5'-flanking regions was sequenced, and putative regulatory elements were identified. These results will be useful for studies on the developmental and biological regulation of the TRKA gene and for further characterization of mutations in CIPA patients as well as elucidation of mechanisms responsible for rearrangement(s) observed in human tumors.
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Affiliation(s)
- Y Indo
- Department of Pediatrics, Kumamoto University School of Medicine, Japan
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26
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Ajisaka R, Idegawa C, Yoshizawa A, Yoshizawa T, Oozeki O, Tsuruta M. [What terminal cancer patients seek from nurses in treatment at home]. Gan To Kagaku Ryoho 1996; 23 Suppl 3:206-10. [PMID: 8982303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We have provided care at home for 29 patients who were terminally ill, and from the fact that 3 of them needed excretion care, we learned something important for successful nursing care. The first necessity is the technical skill and knowledge of nursing care for the terminal cancer patients. We need to be able to provide guidance for the patient or family. The second is prompt consultation anytime when the patient or family needs it. The key to success is to create a medical network system for terminal cancer patients. The third is to provide support for the patient and family so that they pass the time without pain and meaningfully.
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Affiliation(s)
- R Ajisaka
- Dept. of Nursing Care, Kaname-cho Hospital
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27
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Yoshizawa A, Yoshizawa T, Azisaka R, Idegawa C, Oozeki O, Tsuruta M. [Questionnaire survey of families who lost a member regarding the home care received--mostly of families whose member had terminal cancer]. Gan To Kagaku Ryoho 1996; 23 Suppl 3:256-60. [PMID: 8982311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We conducted a questionnaire survey of 14 families who each had lost a member regarding the home care they received. Thirteen of the families surveyed had a member who had suffered from terminal cancer. This was thus a survey of "Home Care of Terminal Cancer Patients." In home care for patients with terminal cancer, one should realize they do not have much time, so to improve the balance of supply and demand, we urgently need to build a better system of cooperation with public officials to provide aggressive and prompt home care simulating welfare service.
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Affiliation(s)
- A Yoshizawa
- Dept. of Internal Medicine, Kaname-cho Hospital
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28
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Indo Y, Tsuruta M, Hayashida Y, Karim MA, Ohta K, Kawano T, Mitsubuchi H, Tonoki H, Awaya Y, Matsuda I. Mutations in the TRKA/NGF receptor gene in patients with congenital insensitivity to pain with anhidrosis. Nat Genet 1996; 13:485-8. [PMID: 8696348 DOI: 10.1038/ng0896-485] [Citation(s) in RCA: 419] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Congenital insensitivity to pain with anhidrosis (CIPA; MIM 256800) is an autosomal-recessive disorder characterized by recurrent episodes of unexplained fever, anhidrosis (absence of sweating) and absence of reaction to noxious stimuli, self-mutilating behaviour and mental retardation. The genetic basis for CIPA is unknown. Nerve growth factor (NGF) induces neurite outgrowth and promotes survival of embryonic sensory and sympathetic neurons. Mice lacking the gene for TrkA, a receptor tyrosine kinase for NGF, share dramatic phenotypic features of CIPA, including loss of responses to painful stimuli, although anhidrosis is not apparent in these animals. We therefore considered the human TRKA homologue as a candidate for the CIPA gene. The mRNA and genomic DNA encoding TRKA were analysed in three unrelated CIPA patients who had consanguineous parents. We detected a deletion-, splice- and missense-mutation in the tyrosine kinase domain in these three patients. Our findings strongly suggest that defects in TRKA cause CIPA and that the NGF-TRKA system has a crucial role in the development and function of the nociceptive reception as well as establishment of thermoregulation via sweating in humans. These results also implicate genes encoding other TRK and neurotrophin family members as candidates for developmental defect(s) of the nervous system.
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Affiliation(s)
- Y Indo
- Department of Pediatrics, Kumamoto University School of Medicine, Japan
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29
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Imaizumi T, Tsuruta M, Koike Y, Ono M, Shirakawa K, Nagata M, Konishi R. A 4-week repeated percutaneous dose toxicity study of calcipotriol (MC903) followed by a 4-week recovery test in dogs. J Toxicol Sci 1996; 21 Suppl 2:309-23. [PMID: 8741417 DOI: 10.2131/jts.21.supplementii_309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A 4-week repeated percutaneous dose toxicity of calcipotriol (MC903), an anti-psoriasic agent, followed by a 4-week recovery was studied in beagle dogs at doses of 0.04, 0.4 and 4 micrograms/kg/day. 1. In general conditions, reddening, desquamation, rash, and wet and hot skin were observed at the skin of application site at 4 micrograms/kg/day. 2. In urinalysis, a tendency to an increase in Ca level, was observed at 4 micrograms/kg/ day. In hematology, an increase in the segmented neutrophils and tendency to a decrease in the lymphocyte counts were observed at 4 micrograms/kg/day. In biochemistry of serum, an increase in gamma-globulin ratio, and decreases in A/G and albumin ratios were observed at 4 micrograms/kg/day. 3. In organ weights, tendency to decreases of the absolute and relative weights in the thymus was observed at 4 micrograms/kg/day. 4. Histopathological examination revealed squamous cell hyperplasia and hyperkeratosis at the skin of application site at 4 micrograms/kg/day. 5. The above changes disappeared after the 4-week recovery period and suggested that they were reversible. 6. On the basis of results obtained in the present study, it is considered that 0.4 microgram/kg/day is the no-toxic dose of MC903 applied percutaneously in both sexes of beagle dogs.
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Affiliation(s)
- T Imaizumi
- Japan Seigiken Research Center Co., Ltd., Shizuoka, Japan
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30
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Imaizumi T, Tsuruta M, Kitagaki T, Ono M, Shirakawa K, Nagata M, Konishi R. [Single dose toxicity studies of calcipotriol (MC903) in rats and dogs]. J Toxicol Sci 1996; 21 Suppl 2:277-85. [PMID: 8741415 DOI: 10.2131/jts.21.supplementii_277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A single dose toxicity of calcipotriol (MC903), an anti-psoriasic agent, administered subcutaneously (s.c.) and percutaneously (p.c.) was studied in Slc:SD rats (s.c. and p.c.) and beagle dogs (s.c.). The LD50 values of MC903 were as follows: rats, 2.19 mg/kg in males and 2.51 mg/kg in females by s.c., and more than 15 mg/kg in both sexes by p.c.; dogs, more than 1.5 mg/kg in males by p.c. No sexual difference was noted in LD50 values of rats. Death of rats was observed from 1 to 3 days after administration by both routes. Dead animals showed decreases in body weight and locomotor activity, reddish tear, abnormal gait and dirty hair by both routes. Furthermore, dead animals administered by s.c. showed salivation, nasal discharge, piloerection, ptosis, diarrhea, urorrhea, nasal and vaginal bleeding, subnormal temperature, loose stool, cyanosis, irregular and deep respirations, clonic and tonic convulsions. Survival of rats showed similar signs to those of dead animals except for nasal discharge, nasal and vaginal bleeding, cyanosis, agonal respiration and convulsion. Discoloration of the kidney, white patch of the heart and a dilatation of the stomach wall were observed on macroscopic examinations. No mortalities were observed in dogs which showed vomiting, conjunctival congestion, circumoral and auricular reddenings, periblepharal purplish reddening, decreases in locomotor activity and defecation, emaciation, eye discharge, skin desquamation of treated area and an increase in respiration. On macroscopic examination, desquamation of the skin, reddening of the circumoral mucosa, pale gray yellow striations in renal tubules of the cortex and discoloration of the thyroid were observed. Histopathological findings revealed epidermal thickening with parakeratosis, fibrocytes, hypertrophy and hypersecretion of the sebaceous and sweat glands, formation of epitheloid glanulomas and infiltration of neutrophils in the subcutaneous tissues. Furthermore, moderate calcium deposits in the renal tubules, fatty cells and slight calcium deposits in interstitial tissues of the thyroid, and a cystic nest of an ectopic intestinal epithelium between muscle layers of the duodenum were observed at the highest dose. On the basis of results obtained in the present study, rats administered MC903 by s.c. or p.c. died probably due to the circulatory and renal disturbance resulted from effects of this drug on the heart and kidney.
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Affiliation(s)
- T Imaizumi
- Japan Seigiken Research Center Co., Ltd., Shizuoka, Japan
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31
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Imaizumi T, Tsuruta M, Koike Y, Ono M, Shirakawa K, Nagata M, Konishi R. [A 26-week repeated percutaneous dose toxicity study of calcipotriol (MC903) in dogs]. J Toxicol Sci 1996; 21 Suppl 2:365-87. [PMID: 8741420 DOI: 10.2131/jts.21.supplementii_365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A 26-week repeated percutaneous dose toxicity of calcipotriol (MC903), an anti-psoriasic agent, was studied in beagle dogs at doses of 0.04, 0.4 and 4 micrograms/kg/day. 1. In general conditions, reddening, rash, desquamation, pruritus, wet and hot skin at 4 micrograms/kg/day, reddening, rash and desquamation at 0.4 microgram/kg/day, pruritus and desquamation at 0.04 microgram/kg/day, were observed at the skin of application site. 2. In urinalysis, an increase or a tendency to an increase in Ca level, were observed at 4 micrograms/kg/day. 3. Histopathological examinations revealed squamous cell hyperplasia and parakeratosis at the skin of application site in both sexes at 4 micrograms/kg/day. However, these findings were not shown at the skin of application site at 0.4 and 0.04 microgram/kg/day. 4. On the basis of results obtained in the present study, it is considered that 0.4 microgram/kg/day is the no-toxic dose of MC903 applied percutaneously in both sexes of beagle dogs.
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Affiliation(s)
- T Imaizumi
- Japan Seigiken Research Center Co., Ltd., Shizuoka, Japan
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32
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Tsuruta M, Hashimoto R, Adachi H, Imaizumi T, Nomura G. Hyperinsulinaemia as a predictor of hypertension: an 11-year follow-up study in Japan. J Hypertens 1996; 14:483-8. [PMID: 8761898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To examine the hypothesis that hyperinsulinaemia is associated with the development of borderline hypertension or hypertension. DESIGN Blood pressure status in non-obese normotensives (< 140/90 mmHg, n = 135) people were re-examined after 11 years after the baseline examination. Participants were selected from a 1981 population-based health examination and had a high blood glucose level or more than a trace of glucose in their urine. Out of 319 people recruited for further examination of glucose tolerance status, 135 normotensive participants with body mass index < 26 kg/m2 and without diabetes according to World Health Organization criteria were re-examined at the follow-up survey. RESULTS Sixty-two (46%) out of 135 normotensive participants were hypertensive (defined as blood pressure > or = 140/90 mmHg) or receiving antihypertensive medication (n = 8) at the follow-up survey. Significant associations between the development of hypertension and baseline parameters were observed for systolic and diastolic blood pressure, serum triglycerides, high-density lipoprotein (HDL)-cholesterol, fasting and 60 min post-load insulin levels, and the sum of insulin concentrations from fasting to 180 min after glucose challenge after adjustments for age and sex. Odds ratios (95% confidence intervals) for the future development of hypertension between the highest and the lowest tertiles of insulin levels were 4.06 (1.40-11.76) for fasting insulin, 4.25 (1.45-12.45) for 60 min post-glucose load insulin, and 3.88 (1.34-11.20) for the sum of insulin concentrations, after adjustment for age, sex, systolic blood pressure, body mass index and alcohol consumption. Further adjustments for serum triglycerides and serum creatinine did not affect the insulin-hypertension relationship. CONCLUSION The present study suggests that hyperinsulinemia is significantly related to the development of hypertension in non-obese and non-diabetic Japanese people.
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Affiliation(s)
- M Tsuruta
- Third Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan
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33
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Misumi S, Tsuruta M, Furuishi K, Shoji S. Determination of N-myristoyl peptide sequence both by MALDI TOF MASS and with an N-myristoyl cleaving enzyme (polymyxin acylase). Biochem Biophys Res Commun 1995; 217:632-9. [PMID: 7503745 DOI: 10.1006/bbrc.1995.2821] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Polymyxin acylase isolated from Pseudomonas sp. M-6-3 was used as an N-myristoyl cleaving enzyme in order to determine a part of the N-terminal amino acid sequence of N-myristoyl proteins. The enzyme hydrolyzed a number of N-myristoyl oligopeptides at various hydrolysis rates but not N-myristoyl proteins. The oncogenic protein (N-myristoyl-pp60c-src) was isolated from human colon adenocarcinoma cell line COLO 320DM by two-dimensional polyacrylamide gel electrophoresis. The protein was digested with trypsin and the resultant tryptic N-myristoyl tetrapeptide (N-myristoyl-Gly-Ser-Asn-Lys) was purified by HPLC and the structure was determined both by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI TOF MASS) and by a gas-phase protein sequencer before or after treatment with the polymyxin acylase. The results suggest that the N-myristoyl peptide sequence derived from N-myristoyl proteins was clearly determined by the combined use of MALDI TOF MASS and the N-myristoyl cleaving enzyme.
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Affiliation(s)
- S Misumi
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Kumamoto University, Japan
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34
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Yoshizawa A, Yoshizawa T, Azisaka R, Ohzeki O, Tsuruta M. [Role of medical social workers in home care]. Gan To Kagaku Ryoho 1995; 22 Suppl 4:345-8. [PMID: 8849274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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35
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Hashimoto R, Adachi H, Nishida H, Tsuruta M, Nomura G. Serum N-acetyl-beta-D-glucosaminidase activity in predicting the development of hypertension. Hypertension 1995; 25:1311-4. [PMID: 7768579 DOI: 10.1161/01.hyp.25.6.1311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We conducted a prospective study in residents of a small farming community in southwestern Japan to determine whether elevated serum N-acetyl-beta-D-glucosaminidase (NAG) activity would predict future hypertension. The 505 normotensive subjects (blood pressure, < 140/90 mm Hg; mean age, 52 +/- 12 years) were reexamined after 7 years; 111 (22%) had become hypertensive (defined as blood pressure > or = 140/90 mm Hg and/or taking antihypertensive medication at follow-up). After adjustment for age and sex, the development of hypertension was significantly related to body mass index (P < .002), the sum of skinfolds (P < .001), baseline blood pressure (P < .0001), serum cholesterol (P < .01), serum uric acid level (P < .0001), and serum NAG activity (P < .005). Elevated NAG activity showed an independent relationship to future hypertension (P < .005) after adjustments for age, sex, baseline blood pressure (systolic, diastolic, or mean), uric acid level, and the sum of skinfolds. Therefore, elevated serum NAG activity was an effective indicator of future hypertension, and it might therefore be related to functional and/or structural changes in the cardiovascular system.
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Affiliation(s)
- R Hashimoto
- Third Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan
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36
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Tsuruta M. [Activities of volunteers in hospitals. Church members work as volunteers for library service and for sick children]. Kango 1995; 47:48-54. [PMID: 8709501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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37
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Fujiyama K, Kiriyama T, Ito M, Kimura H, Ashizawa K, Tsuruta M, Nagayama Y, Villadolid MC, Yokoyama N, Nagataki S. Suppressive doses of thyroxine do not accelerate age-related bone loss in late postmenopausal women. Thyroid 1995; 5:13-7. [PMID: 7787427 DOI: 10.1089/thy.1995.5.13] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To examine whether suppressive doses of thyroxine have any adverse effects on bone, we evaluated various bone metabolic markers (lectin-precipitated alkaline phosphatase, osteocalcin, carboxyl-terminal region of type I collagen propeptide, tartrate-resistant alkaline phosphatase, and urinary excretion of hydroxyproline and pyridinium crosslinks), incidence of vertebral deformity, total body and regional (lumbar spine and radius) bone mineral densities (BMDs), and rates of bone loss in 24 late postmenopausal (more than 5 years after menopause) women who were treated with levothyroxine (L-T4) after total thyroidectomy for differentiated carcinoma. Depending on the clinical records, including serum TSH levels measured by immunoradiometric assay, these patients were divided into two groups. One group of patients was given suppressive doses of L-T4 (TSH < 0.1 mU/L, n = 12) and the other group was given nonsuppressive doses of L-T4 (TSH > 0.1 mU/L, n = 12). There was no difference in bone metabolic markers and incidence of vertebral deformity between the groups. In patients with TSH suppression, Z-scores of BMDs calculated from age-matched healthy women (n = 179, aged 55 to 80) were nearly in the zero range of values (0.077 at total body, 0.228 at lumbar spine, and -0.117 at trabecular region of lumbar spine). The rate of bone loss in TSH-suppressed patients (-0.849 +/- 0.605%/year) was not significantly different from that of nonsuppressed patients (-0.669 +/- 0.659). These prospective and cross-sectional data suggest that long-term levothyroxine therapy using suppressive doses has no significant adverse effects on bone.
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Affiliation(s)
- K Fujiyama
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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38
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Hashimoto R, Adachi H, Tsuruta M, Tashiro H, Toshima H. Association of hyperinsulinemia and serum free fatty acids with serum high density lipoprotein-cholesterol. J Atheroscler Thromb 1995; 2:53-9. [PMID: 9225209 DOI: 10.5551/jat1994.2.53] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A total of 155 Japanese subjects (79 men and 76 women) who were classified as having normal or borderline glucose tolerance, according to the criteria for the 50-g oral glucose tolerance test (GTT) of the Japanese Diabetes Society, were analyzed for factors related to serum high density lipoprotein (HDL)-cholesterol concentration, especially the responses of insulin and free fatty acid (FFA) after a glucose challenge. In men, significant negative univariate correlations were observed with body mass index (P < 0.01), the summed values of triceps and subscapular skin-folds (P < 0.01), serum insulin concentration at all time intervals, and serum FFA at 30 and 60 min of GTT. Serum insulin at 60, 120, and 180 min, sum insulin, and FFA at 30 and 60 min of GTT were significantly related to serum HDL-cholesterol after adjustment for body mass index and triglyceride concentration. Multiple linear regression analysis with the step-forward method showed that sum insulin (P < 0.01), FFA at 60 min of GTT (P < 0.001), and alcohol consumption (P < 0.01) were independently related to serum HDL-cholesterol concentration. Only the triglyceride concentration was inversely correlated (P < 0.05) with HDL-cholesterol concentration in women. These data indicate that both insulin and FFA concentration, as markers of insulin resistance, apparently influence on HDL kinetics in men, but not in women. The lack of this association in women was appeared to related to the degree of obesity.
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Affiliation(s)
- R Hashimoto
- Third Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan
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39
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Nagayama Y, Ohta K, Tsuruta M, Takeshita A, Kimura H, Hamasaki K, Ashizawa K, Nakata K, Yokoyama N, Nagataki S. Exacerbation of thyroid autoimmunity by interferon alpha treatment in patients with chronic viral hepatitis: our studies and review of the literature. Endocr J 1994; 41:565-72. [PMID: 7889118 DOI: 10.1507/endocrj.41.565] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In the present studies, the long term effects of IFN alpha on thyroid function and thyroid autoantibodies were evaluated in 42 patients with chronic viral hepatitis type C treated with IFN alpha for at least 4 months. Before IFN treatment, 41 patients tested were all euthyroid. Five (12%) out of 24 patients tested had positive tests for thyroid autoantibodies. MCHA/TPOAb was detected in all 5 and TGHA/TGAb in 3 out of these 5 patients. Six to 10 x 10(6) units (U) of recombinant or natural IFN alpha were given intramuscularly daily for the first 2 to 4 weeks, followed by 3 to 10 x 10(6) U thrice weekly for the subsequent 14 to 22 weeks. Thyroid dysfunction and/or rises in titers of thyroid autoantibodies were observed in 6 patients during IFN alpha treatment; clinically overt thyroid dysfunctions, destructive thyroiditis and thyrotoxicosis of unidentified etiology, developed in 2 patients 4 to 5 months after start of IFN treatment, subclinical hypothyroidism with a slight increase in serum TSH concentrations but no serum thyroid hormone alternations was observed in 2 patients, and increases in titers of thyroid autoantibodies without thyroid dysfunction were found in 2 patients. Thus, IFN alpha exacerbated thyroid autoimmunity exclusively in all patients with positive tests for thyroid autoantibodies prior to treatment, but did not induce thyroid autoimmunity in thyroid autoantibody-negative patients. These data suggest that the prolonged IFN alpha therapy can lead to exacerbation of thyroid autoimmunity in susceptible (thyroid autoantibody-positive) patients.
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Affiliation(s)
- Y Nagayama
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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40
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Urisu A, Kondo Y, Wada E, Horiba F, Tsuruta M, Yasaki T. Specific IgE antibodies and serum eosinophil cationic protein in children with atopic dermatitis alone. Acta Paediatr Jpn 1994; 36:146-9. [PMID: 8203257 DOI: 10.1111/j.1442-200x.1994.tb03150.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Both eosinophils and specific immunoglobulin E (IgE) to foods and mites have been considered involved in the pathogenesis of atopic dermatitis (AD). The relationship between eosinophils and specific IgE, however, remains to be elucidated. Blood eosinophil counts, serum eosinophil cationic protein (ECP) and IgE to egg white, cow's milk, soybean, rice and Dermatophagoides pteronyssinus (Dp) were measured in subjects with AD alone or bronchial asthma (BA) alone. Subjects with positive IgE titers (Pharmacia radioallergosorbent test (RAST) units > 0.7) of one or more items were defined as RAST-positive. Immunoglobulin E titers to egg white, cow's milk and soybean of subjects with AD were high in early childhood and declined with aging, whereas the titers of subjects with BA were negative or low. Immunoglobulin E titers to Dp were elevated after 1 year of age in both disease groups. Eosinophil cationic protein (ECP) levels and blood eosinophil counts in the AD and BA groups were significantly higher than those of non-atopic controls. No difference in ECP levels or blood eosinophil counts were observed between RAST-positive and negative groups. It is concluded that IgE to foods such as egg white, cow's milk and soybean might have a role in the pathogenesis of AD of young children, while IgE to mites might be involved in older children. Eosinophils may also participate in AD. However, different mechanisms may be responsible for the rise in specific IgE and high ECP levels and blood eosinophil counts.
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Affiliation(s)
- A Urisu
- Department of Pediatrics, Fujita Health University School of Medicine, Aichi, Japan
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41
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Tsuruta M, Nagayama Y, Yokoyama N, Izumi M, Nagataki S. Long-term follow-up studies on iodine-131 treatment of hyperthyroid Graves' disease based on the measurement of thyroid volume by ultrasonography. Ann Nucl Med 1993; 7:193-7. [PMID: 8217496 DOI: 10.1007/bf03164966] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In the present series of studies, the long-term (four year) effect of 80 Gy of 131I treatment was evaluated in patients with hyperthyroid Graves' disease whose thyroid volumes have been accurately estimated with a high resolution ultrasound scanner. One year after 131I treatment, 23.1% (3 out of 13 patients) remained hyperthyroid, 69.2% (9 out of 13) became euthyroid, and 7.7% (1 out of 13) were in a hypothyroid state. Since three patients in a hyperthyroid state one year after treatment were subsequently treated with either antithyroid drugs or additional 131I treatment, the remaining ten patients (9 euthyroid and 1 hypothyroid patients) have been followed up for three more years. Two patients developed a hypothyroid state three years after treatment and one patient four years after treatment. Overall, 60% (6 out of 10 patients) were in a euthyroid state and 40% (4 out of 10) in a hypothyroid state, four years after 80 Gy 131I treatment. There was no significant difference between eu- and hypothyroid groups in the sex ratio, age, radiation dose, therapeutic dose, thyroid gland volume, 24-hr 131I uptake, the effective half-life of 131I in the thyroid or the duration of hyperthyroidism. In our preliminary studies, the incidence of late hypothyroidism in our 131I treatment is similar to those previously reported. These suggest that uncertain factor(s), such as inhomogeneity of iodine distribution in the thyroid, unequal sensitivity of the thyroid cells to the radiation, and/or persistent destructive effects of the autoimmune process may influence the long-term effect of 131I treatment of Graves' disease.
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Affiliation(s)
- M Tsuruta
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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42
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Kondo Y, Urisu A, Wada E, Tsuruta M, Yasaki T, Yamada K, Masuda S, Morita Y. [Allergen analysis of buckwheat by the immunoblotting method]. Arerugi 1993; 42:142-148. [PMID: 8507155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Inhalation or ingestion of very small amounts of buckwheat allergen can initiate severe symptoms including wheezing, rhinorrhea, urticaria, vomiting and anaphylactic shock in patients with hypersensitivity against buckwheat. However, few studies of the immunological properties of buckwheat allergen have been made. The aim of the present investigation was to analyze the allergen in buckwheat antigen using the immunoblotting method, radioallergosorbent test (RAST) and RAST inhibition assay. Buckwheat 24 kilodalton protein (BW24KD) was shown by immunoblotting analysis to be the most frequently recognized allergenic component, binding to IgE antibodies from 100% of the patients' sera. There was a significant positive correlation (p < 0.001) between % bindings for BW24KD and buckwheat. In the RAST inhibition assay using patients' sera which showed positive IgE antibodies to buckwheat and BW24KD, there was effective inhibition in a dose-dependent manner between inhibition in a dose-dependent manner between BW24KD and buckwheat. These data indicated that BW24KD was a major allergen in buckwheat antigens. The experiments of SDS-PAGE using digestion buffer with or without 2-mercaptoethanol suggested that BW24KD was a component of heterodimer and the paired components had different molecular weights.
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Affiliation(s)
- Y Kondo
- Department of Pediatrics, Fujita Health University School of Medicine
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Kimura H, Yamashita S, Namba H, Usa T, Fujiyama K, Tsuruta M, Yokoyama N, Izumi M, Nagataki S. Impairment of the TSH signal transduction system in human thyroid carcinoma cells. Exp Cell Res 1992; 203:402-6. [PMID: 1333981 DOI: 10.1016/0014-4827(92)90014-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In order to further evaluate the role of TSH in the proliferation and the differentiation of human thyroid carcinoma cells, we have analyzed the function of the TSH receptor in the established thyroid carcinoma cell lines NPA and WRO. The TSH signal transduction system in the carcinoma cells was also compared with that in normal thyroid cells. Although unresponsiveness to bovine and human TSH was demonstrated by measurement of cAMP production and [3H]thymidine incorporation after treatment of TSH, cAMP production was induced after stimulation of these cells by forskolin, cholera toxin, and isoproterenol. Specific binding to 125I-TSH was demonstrated in both NPA and WRO cells in addition to the existence of a TSH receptor mRNA and thyroglobulin mRNA species, although thyroid-specific gene expression in these cells was not regulated by TSH. These findings suggest that the unresponsiveness to TSH in these cells may be due to an abnormality of TSH receptor-G protein coupling rather than to a decreased level of TSH-receptor expression or a Gs protein abnormality.
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Affiliation(s)
- H Kimura
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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44
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Abstract
In order to further clarify the growth regulating effect of cytokines on thyroid cell proliferation, the effect of interleukin-1 (IL-1) was tested on growth of human papillary and follicular thyroid carcinoma cells (NPA and WRO). Although fetal bovine serum stimulated DNA synthesis, TSH did not affect cell growth and the level of thyroglobulin messenger RNA (mRNA) in NPA. Eight-bromo-cAMP and forskolin, however, significantly suppressed DNA synthesis, suggesting the impairment of TSH receptor signal transduction in NPA cells despite of the presence of [125I]TSH binding. Both IL-1 alpha and beta inhibited [3H] thymidine uptake into NPA cell DNA in a dose- and time-dependent manner at concentrations ranging from 5 x 10(2) to 10(5) U/L; 10(5) U/L of IL-1 suppressed DNA synthesis by more than 40% of control. The suppressive activity of IL-1 beta was more potent than that of IL-1 alpha in spite of the same lymphocytes activating factor (LAF) activity. Steady state levels of c-myc mRNA transcripts were also inhibited by both IL-1 alpha and beta, respectively. On the other hand, IL-1 alpha and beta did not affect the WRO cell growth. Although forskolin stimulated cAMP production in NPA cells, IL-1 did not induce cAMP generation. Indomethacin (1.0 approximately 10 mg/L) did not alter the suppressive activity of IL-1. Neither IL-1 alpha and beta caused a cytotoxic effect on the NPA cells. Although changes in c-myc mRNA content may just be an epiphenomenon of the decrease in proliferative activity in response to IL-1, and not a direct target of action of the peptide, these results demonstrate the inhibitory effect of IL-1 on cell growth of NPA. IL-1 may have an aspect of antitumorigenic action in some human thyroid carcinoma differentiation and replication.
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Affiliation(s)
- H Kimura
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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45
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Namba H, Kondo H, Yamashita S, Kimura H, Yokoyama N, Tsuruta M, Sato A, Izumi M, Kinoshita H, Hakariya S. Multiple endocrine neoplasia type 2 with malignant pheochromocytoma — Long term follow-up of a case by131I-meta-iodobenzylguanidine scintigraphy—. Ann Nucl Med 1992; 6:111-5. [PMID: 1352456 DOI: 10.1007/bf03164652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The case of a 33-year-old Japanese man, who has Multiple Endocrine Neoplasia Type 2 (MEN IIa) (Sipple's syndrome) with malignant pheochromocytoma, is reported. He had survived for twelve years since the initial diagnosis of malignant pheochromocytoma. Within this period, he had undergone 131I-meta-iodobenzylguanidine scintigraphy twice, in 1983 and 1990. This is the first case in Japan of a longterm surviving patient with malignant pheochromocytoma followed up by 131I-MIBG scintigraphy. Although he had no exacerbation of clinical symptoms or urinary catecholamine levels, second scintigraphy clearly showed an increase in the tumor size, new metastasis of the malignant pheochromocytoma and exacerbation of the medullary thyroid carcinoma. Compared with any other roentgenological device and hormonal data, 131I-MIBG scintigraphy was seen to be a good tool for evaluating the localization and the progression of tumors. 131I-MIBG scintigraphy is a useful procedure not only for initial diagnosis but also for judging progression in a case of advanced malignant pheochromocytoma.
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Affiliation(s)
- H Namba
- Department of Cell Physiology, Atomic Disease Institute, Nagasaki, Japan
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46
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Tanigawa K, Yamashita S, Namba H, Villadolid MC, Kimura H, Tominaga T, Tsuruta M, Yokoyama N, Izumi M, Nagataki S. Acute adrenal insufficiency due to symptomatic Rathke's cleft cyst. Intern Med 1992; 31:467-9. [PMID: 1633349 DOI: 10.2169/internalmedicine.31.467] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A 65-year-old Japanese man who suffered from secondary hypopituitarism due to Rathke's cleft cyst is reported. Although computed tomography failed to detect any pituitary abnormality, magnetic resonance imaging demonstrated the presence of a cystic intrasellar mass, initially suggesting craniopharyngioma or abscess. Operative findings revealed Rathke's cleft cysts within the pituitary fossa which resulted in secondary hypopituitarism. Among cases of secondary hypopituitarism with abnormal findings in the pituitary, symptomatic Rathke's cleft cysts should be included in the differential diagnosis of adrenal insufficiency.
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Affiliation(s)
- K Tanigawa
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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47
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Bauman WA, Spungen AM, Raza M, Rothstein J, Zhang RL, Zhong YG, Tsuruta M, Shahidi R, Pierson RN, Wang J. Coronary artery disease: metabolic risk factors and latent disease in individuals with paraplegia. Mt Sinai J Med 1992; 59:163-8. [PMID: 1574072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Individuals with spinal cord injury (SCI) currently have a longer life span as a result of recent improvements in medical care. As in the able-bodied population, cardiovascular disease is the leading cause of death in persons with SCI, but it appears to occur at younger ages in those with SCI than in the able-bodied population. The reduction in level of activity and adverse changes in body composition caused by SCI have profound metabolic consequences that may influence the progression and severity of coronary artery disease. Metabolic sequelae of SCI include disorders of carbohydrate and lipid metabolism. Almost half of the 45 active, healthy subjects with paraplegia we studied have a disorder of carbohydrate tolerance, 1 in 5 subjects having a diabetic oral glucose tolerance test. Hyperinsulinemia is found in those with abnormal glucose tolerance. Subjects with paraplegia having impaired glucose tolerance or diabetes mellitus are significantly older than those with normal glucose tolerance. High-density lipoprotein cholesterol is markedly depressed, and low density lipoprotein is relatively elevated. Radionuclide myocardial perfusion imaging after upper body ergometry exercise reveals latent coronary artery disease in 12 of 19 subjects with paraplegia.
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Affiliation(s)
- W A Bauman
- Spinal Cord Damage Research Center, Mount Siani Medical Center, New York, NY
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48
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Namba H, Yamashita S, Pei HC, Ishikawa N, Villadolid MC, Tominaga T, Kimura H, Tsuruta M, Yokoyama N, Izumi M. Lack of PTC gene (ret proto-oncogene rearrangement) in human thyroid tumors. Endocrinol Jpn 1991; 38:627-32. [PMID: 1823030 DOI: 10.1507/endocrj1954.38.627] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PTC gene, which is derived from the rearranged form of the ret proto-oncogene, was originally discovered in human thyroid papillary carcinomas. This gene has been thought to act as a tumorigenetic factor in thyroid carcinoma, although the action of PTC oncogene products is still unknown. To study the frequency of the PTC gene present in human thyroid carcinomas, we investigated four cell lines derived from thyroid carcinoma and 22 thyroid tumor tissue specimens. The reverse transcriptase-polymerase chain reaction (RT-PCR) method was performed to detect putative PTC mRNA. The presence of the PTC gene in genomic DNA was analyzed by Southern blot hybridization. PTC mRNA was detected by the RT-PCR method in only one papillary carcinoma cell line (TPC-1 cell). Southern gel analysis confirmed the rearrangement of the ret proto-oncogene in this cell line. In the other three cell lines and 22 tumor tissue specimens, however, neither the PTC gene or mRNA was detected. These results demonstrate that the prevalence of the PTC gene in thyroid tumor is low and may not be essential for human thyroid tumorigenesis. That our present results conflict with previous reports may be due to general differences in genetic background among races.
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Affiliation(s)
- H Namba
- First Department of Internal Medicine, Nagasaki University School of Medicine, Japan
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Wada E, Urisu A, Kondo Y, Horiba F, Tsuruta M, Yasaki T, Masuda S, Yamada K, Kozawa T, Hida Y. [Relationship between immediate hypersensitive reactions by buckwheat ingestion and specific IgE for rice in subject with positive IgE-RAST for buckwheat]. Arerugi 1991; 40:1493-9. [PMID: 1793368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
IgE-mediated mechanisms are important in immediate hypersensitive reactions (IHR) to buckwheat. However, a part of subjects with high IgE for buckwheat show no IHR to buckwheat ingestion. Inspite of cross-allergenicity between buckwheat and rice, rice ingestion rarely induces IHR even in subjects with high IgE for rice unlike buckwheat-induced IHR. We speculated that there were some relationships between the presence of IHR to buckwheat and recognition of cross-allergenic determinants on buckwheat components with rice components. We examined IgE-RAST for rice in 58 subjects with positive IgE-RAST for buckwheat. IgE-RAST for Dermatophagoides pteronyssinus (Dp), egg white and cow's milk as unrelated antigens with rice were also assessed for a comparison. Subjects (n = 33) without IHR to buckwheat showed higher IgE-RAST values for rice than those (n = 25) with IHR, whereas there were no differences in IgE-RAST values for Dp, egg white and cow's milk between two groups with and without IHR. IgE-RAST values for buckwheat showed significant close correlations to those for rice in subjects without IHR to buckwheat but not in those with IHR. There were no significant correlations between IgE-RAST values for buckwheat and for Dp, egg white or cow's milk in both groups with and without IHR. These results suggested that the IgE from subjects without IHR to buckwheat recognized cross-allergenic determinants with rice on the buckwheat components.
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Affiliation(s)
- E Wada
- Department of Pediatrics, Fujita Health University School of Medicine
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Hidaka T, Tsuruta M, Tomita Y, Inokuchi T, Sugiyama M, Ogura R. Generation of leukotrienes and hydroxyeicosatetraenoic acids in peritoneal macrophages of tumor-bearing mice. Prostaglandins Leukot Essent Fatty Acids 1991; 44:185-90. [PMID: 1808627 DOI: 10.1016/0952-3278(91)90054-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To examine the potential role of lipoxygenase products in the pathophysiology observed after experimental tumor implantation, we examined the generation of leukotrienes (LTs) and hydroxyeicosatetraenoic acids (HETEs) in peritoneal macrophages. C57BL/6 mice were given subcutaneous inoculations of B16 melanoma cells, and peritoneal macrophages were isolated various days after the inoculation. Macrophages were incubated for 1 h at 37 degrees C in serum-free RPM11640 containing 10 microM calcium ionophore A23187, 10 microM exogenous arachidonic acid (AA), 5 mM cysteine hydrochloride and 1 mM reduced glutathione. LTs and HETEs were separately extracted, passed through Sep-Pak cartridges, then identified and quantitated with a HPLC system using UV absorbance. The B16 melanoma-cell-treated/untreated macrophages were found to produce substantial amounts of 15-HETE, 12-HETE and 5-HETE and LTC4 by enzymatic mechanisms. Thus, when determined under various conditions, the production of HETEs was dependent on substrate-concentration, incubation-time and cell-number. The production of LTC4 was dependent on incubation-time and cell number but not substrate-concentration, indicating utilization of endogenous AA stores. Of these products, 12-HETE and LTC4 showed a significant increase on the fourth day after the tumor cell inoculation and returned to the control level by the 11th day after the same treatment. These results suggest that in vivo tumor cell implantation may induce a transient increase of 12-HETE and LTC4 production in macrophages.
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Affiliation(s)
- T Hidaka
- Department of Medical Biochemistry, Kurume University School of Medicine, Fukuoka, Japan
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