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Tsutsui T, Fujiwara T, Matsumoto Y, Kimura A, Kanahori M, Arisumi S, Oyamada A, Ohishi M, Ikuta K, Tsuchiya K, Tayama N, Tomari S, Miyahara H, Mae T, Hara T, Saito T, Arizono T, Kaji K, Mawatari T, Fujiwara M, Takasaki M, Shin K, Ninomiya K, Nakaie K, Antoku Y, Iwamoto Y, Nakashima Y. Geriatric nutritional risk index as the prognostic factor in older patients with fragility hip fractures. Osteoporos Int 2023:10.1007/s00198-023-06753-3. [PMID: 37067545 DOI: 10.1007/s00198-023-06753-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 04/06/2023] [Indexed: 04/18/2023]
Abstract
This study investigated the long-term survival and incidence of secondary fractures after fragility hip fractures. The 5-year survival rate was 62%, and the mortality risk was seen in patients with GNRI < 92. The 5-year incidence of secondary fracture was 22%, which was significantly higher in patients with a BMI < 20. BACKGROUND Malnutrition negatively influences the postoperative survival of patients with fragility hip fractures (FHFs); however, little is known about their association over the long term. OBJECTIVE This study evaluated the ability of the geriatric nutritional risk index (GNRI) as a risk factor for long-term mortality after FHFs. METHODS This study included 623 Japanese patients with FHFs over the age of 60 years. We prospectively collected data on admission and during hospitalization and assessed the patients' conditions after discharge through a questionnaire. We examined the long-term mortality and the incidence of secondary FHFs and assessed the prognostic factors. RESULTS The mean observation period was 4.0 years (range 0-7 years). The average age at the time of admission was 82 years (range 60-101 years). The overall survival after FHFs (1 year, 91%; 5 years, 62%) and the incidence of secondary FHFs were high (1 year, 4%; 5 years, 22%). The multivariate Cox proportional hazard analysis revealed the risk factors for mortality as older age (hazard ratio [HR] 1.04), male sex (HR 1.96), lower GNRI score (HR 0.96), comorbidities (malignancy, HR 2.51; ischemic heart disease, HR 2.24; revised Hasegawa dementia scale ≤ 20, HR 1.64), no use of active vitamin D3 on admission (HR 0.46), and a lower Barthel index (BI) (on admission, HR 1.00; at discharge, HR 0.99). The GNRI scores were divided into four risk categories: major risk (GNRI, < 82), moderate risk (82-91), low risk (92-98), and no risk (> 98). Patients at major and moderate risks of GNRI had a significantly lower overall survival rate (p < 0.001). Lower body mass index (BMI) was also identified as a prognostic factor for secondary FHFs (HR 0.88 [p = 0.004]). CONCLUSIONS We showed that older age, male sex, a lower GNRI score, comorbidities, and a lower BI are risk factors for mortality following FHFs. GNRI is a novel and simple predictor of long-term survival after FHFs.
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Affiliation(s)
- T Tsutsui
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - T Fujiwara
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Y Matsumoto
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - A Kimura
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - M Kanahori
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - S Arisumi
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - A Oyamada
- Department of Orthopaedic Surgery, Saga Handicapped Children's Hospital, Saga, Japan
| | - M Ohishi
- Department of Orthopaedic Surgery, Chihaya Hospital, Fukuoka, Japan
| | - K Ikuta
- Department of Orthopaedic Surgery, Karatsu Red Cross Hospital, Saga, Japan
| | - K Tsuchiya
- Department of Orthopaedic Surgery, Japan Community Healthcare Organization, Kyushu Hospital, Fukuoka, Japan
| | - N Tayama
- Department of Orthopaedic Surgery, Steel Memorial Yawata Hospital, Fukuoka, Japan
| | - S Tomari
- Department of Orthopaedic Surgery, Japanese Red Cross Fukuoka Hospital, Fukuoka, Japan
| | - H Miyahara
- Department of Orthopaedic Surgery, National Hospital Organization Kyushu Medical Centre, Fukuoka, Japan
| | - T Mae
- Department of Orthopaedic Surgery, Saga-Ken Medical Centre Koseikan, Saga, Japan
| | - T Hara
- Department of Orthopaedic Surgery, Aso Iizuka Hospital, Fukuoka, Japan
| | - T Saito
- Department of Orthopaedic Surgery, Fukuoka City Hospital, Fukuoka, Japan
| | - T Arizono
- Department of Orthopaedic Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - K Kaji
- Department of Orthopaedic Surgery, Kyushu Rosai Hospital, Fukuoka, Japan
| | - T Mawatari
- Department of Orthopaedic Surgery, Hamanomachi Hospital, Fukuoka, Japan
| | - M Fujiwara
- Department of Orthopaedic Surgery, Sada Hospital, Fukuoka, Japan
| | - M Takasaki
- Department of Orthopaedic Surgery, Harasanshin Hospital, Fukuoka, Japan
| | - K Shin
- Department of Orthopaedic Surgery, Saiseikai Yahata General Hospital, Fukuoka, Japan
| | - K Ninomiya
- Department of Orthopaedic Surgery, Koga Hospital 21, Fukuoka, Japan
| | - K Nakaie
- Department of Orthopaedic Surgery, National Hospital Organization Fukuoka-Higashi Medical Centre, Fukuoka, Japan
| | - Y Antoku
- Faculty of Medicine, Hospital Informatic Centre, Oita University, Oita, Japan
| | - Y Iwamoto
- Department of Orthopaedic Surgery, Kyushu Rosai Hospital, Fukuoka, Japan
| | - Y Nakashima
- Department of Orthopaedic Surgery, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Miyahara H, Kubota N, Furuta J, Iijima S, Nomura T. Novel disinfectant olanexidine gluconate induced contact dermatitis. J Eur Acad Dermatol Venereol 2023. [PMID: 37016966 DOI: 10.1111/jdv.19097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/28/2023] [Indexed: 04/06/2023]
Affiliation(s)
- H Miyahara
- Department of Dermatology Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - N Kubota
- Department of Dermatology Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - J Furuta
- Department of Dermatology Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - S Iijima
- Division of Dermatology, Hanamizuki Clinic, Ushiku, Ibaraki, Japan
- Department of Dermatology, Ryugasaki Saiseikai Hospital, Ryugasaki, Ibaraki, Japan
| | - T Nomura
- Department of Dermatology Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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Kawasoe S, Kubozono T, Ojima S, Kawabata T, Ikeda Y, Miyahara H, Tokushige K, Ohishi M. Development of a risk prediction score and equation for chronic kidney disease: a retrospective cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Chronic kidney disease (CKD) is a risk factor for end-stage renal disease and contributes to increased risk of cardiovascular disease morbidity and mortality. We aimed to develop a risk prediction score and equation for future onset of CKD using large-scale health checkup data.
Methods
This retrospective cohort study included 58,423 participants without baseline CKD who were randomly assigned to Derivation (n=38,948) and Validation cohorts (n=19,475) at a ratio of 2:1. The predictors were anthropometric indices, life style, and blood sampling data. In the Derivation cohort, we performed multivariable logistic regression analysis and obtained the standardized beta coefficient of each factor that was significantly associated with new-onset CKD and assigned scores to each factor. We created a score and an equation to determine the risk of developing CKD after 5 years and applied them to the Validation cohort to assess their reproducibility.
Results
The risk prediction scores ranged from 0 to 16, consisting of the seven indicators, including age, sex, hypertension, dyslipidemia, diabetes, hyperuricemia, and estimated glomerular filtration rate (eGFR). From the receiver operating characteristic (ROC) curve predicting CKD incidence, the area under the curve (AUC) was 0.78. A score of ≥8 showed the highest Youden index in the Derivation cohort, with a sensitivity of 0.90 and specificity of 0.52. The CKD incidence gradually and constantly increased as the score increased from ≤6 to ≥14 (Figure). The risk prediction equation consisted of aforementioned seven indicators: 1/(1 + exp[−(9.4876 + 0.0311×age + 0.2400×sex + 0.3470×hypertension + 0.0893×dyslipidemia + 0.3444×diabetes + 0.0832×hyperuricemia + (−0.1980)×eGFR]). The median probability obtained from the Derivation cohort was 0.018 (interquartile range 0.002–0.084), and the AUC value of the ROC curve for the development of CKD after 5 years was 0.88, with a sensitivity of 0.84 and a specificity of 0.78 at a cutoff value of 0.077. The Validation cohort analysis yielded similar results.
Conclusion
We developed a clinically useful risk score and equation to predict the CKD incidence after 5 years in the general Japanese population. These models have reasonably high predictability and reproducibility.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Kawasoe
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
| | - T Kubozono
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
| | - S Ojima
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
| | - T Kawabata
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
| | - Y Ikeda
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
| | - H Miyahara
- Kagoshima Kouseiren Medical Health Care Center , Kagoshima , Japan
| | - K Tokushige
- Kagoshima Kouseiren Medical Health Care Center , Kagoshima , Japan
| | - M Ohishi
- Kagoshima University, Cardiovascular Medicine and Hypertension , Kagoshima , Japan
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Kawasoe S, Kubozono T, Ojima S, Kawabata T, Miyahara H, Tokushige K, Ohishi M. Gender differences in the effects of weight reduction on future blood pressure elevation in the overweight middle-aged population. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The effectiveness of weight loss (WL) to prevent blood pressure (BP) elevation is common knowledge; however, the effect of gender differences on this efficacy is not known. We aimed to investigate whether there were gender differences in the degree of BP increase and the prevalence of hypertension in the future when middle-aged obese participants achieved slight WL.
Methods
We analyzed the annual health checkup data for the general Japanese population collected from January 2001 through December 2015. Middle-aged participants (40–49 years old) with overweight (body mass index [BMI], 25.0–29.9 kg/m2) who had examination data for two follow-up time-points (after 3 and 10 years) were included. The participants with a BMI decrease ≥1.0 kg/m2 in 3 years (WL group) were propensity score (PS)-matched to those with a BMI decrease <1.0 kg/m2 or weight gain (non-WL group) based on the data of the first examination, including age, BMI, smoking and drinking status, eGFR, systolic BP and diastolic BP, and hypertension (defined as SBP ≥140 mmHg and/or DBP ≥90 mmHg). We compared the BMI, systolic BP, and hypertension prevalence after 10 years in both groups.
Results
There were 17,554 individuals, aged 40–49 years, with overweight. After excluding subjects who did not satisfy the inclusion criteria and PS matching, we identified 232 men and 160 women in both WL and non-WL groups. The BMI in the WL group after 3 years was significantly lower than that in the non-WL group (men, 25.2±1.4 kg/m2 vs. 27.1±1.6 kg/m2, P<0.001; women, 24.9±1.4 kg/m2 vs. 27.1±1.5 kg/m2, P<0.001), and the significance persisted even after 10 years among both men and women (men, 25.5±1.8 kg/m2 vs. 26.8±2.1 kg/m2, P<0.001; women, 25.3±2.0 kg/m2 vs. 26.8±2.2 kg/m2, P<0.001). Among women, the systolic BP and hypertension prevalence after 10 years were significantly lower in the WL group than in the non-WL group (systolic BP, 124.8±16.3 mmHg vs. 130.3±19.0 mmHg, P<0.01; hypertension prevalence, 35.0% vs. 48.1%, P<0.05). In contrast, there were no significant differences in the SBP and hypertension prevalence after 10 years among men between the groups (systolic BP, 129.0±17.7 mmHg vs. 129.0±17.5 mmHg, P=0.96; hypertension prevalence, 46.1% vs. 48.7%, P=0.57).
Conclusions
There were gender differences in the effectiveness of WL to prevent future BP elevation in overweight middle-aged participants. WL could prevent future BP elevation and the hypertension onset in women but not in men.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Kawasoe
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - T Kubozono
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - S Ojima
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - T Kawabata
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - H Miyahara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - K Tokushige
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - M Ohishi
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
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Ojima S, Kubozono T, Kawasoe S, Kawabata T, Miyahara H, Tokushige K, Ohishi M. Fib4 index is a more relevant marker for pulse wave velocity but not for carotid intima-media thickness in a men population. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Carotid intima-media thickness (IMT) and pulse wave velocity (PWV) are useful markers for predicting cardiovascular disease not only in patients with cardiovascular disease but also in the general population. On the other hand, liver disease due to obesity has become a problem and has been reported to be associated with the progression of atherosclerosis. Recently, an indicator of liver stiffness, the Fibrosis-4 index (Fib4 index), has been used to detect the pre-stage liver diseases. However, there is no report to investigate the association between atherosclerotic parameters such as IMT and PWV, and Fib4 index. The Fib4 index is a simple index calculated from age and three blood sample data, and it will be useful for screening for an early stage of atherosclerosis if we can show the association between Fib4 index and these parameters.
Purpose
To investigate the association between atherosclerotic parameters such as IMT or PWV and Fib4 index
Methods
We recruited 3, 128 men participants who underwent health checkup. IMT was evaluated by carotid ultrasonography, and branchial-ankle PWV (baPWV) was measured by an automatic device. We analysed the association of IMT or baPWV with Fib4 index and atherosclerotic risk factors such as age, systolic blood pressure (SBP), low-density lipoprotein cholesterol (LDL-C) and fasting blood sugar (FBS). baPWV ≥1,600 cm/s was defined high baPWV and we performed the receiver operating characteristics (ROC) analysis to demonstrate the significance of Fib4 index for baPWV.
Results
Mean Fib4 index was 1.39±0.68. In the univariate linear regression analysis, all factors such as age, SBP, LDL-C, FBS, Fib4 index were significantly associated with IMT or baPWV. On the other hand, in the multivariate linear regression analysis, Fib4 index was an independent factor for baPWV but not for IMT (IMT, p=0.498; baPWV, p=0.023). Figure 1 showed the result of ROC analysis to predict the high baPWV by Fib4 index. The area under curve (AUC) was 0.73, with the highest discriminating sensitivity and specificity at 0.71 and 0.65, respectively at Fib4 index = 1.27.
Conclusions
Fib4 index was significantly related to baPWV and could be the useful screening marker for arterial stiffness in a general men population.
Figure 1. ROC curve analysis
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Ojima
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - T Kubozono
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - S Kawasoe
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - T Kawabata
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - H Miyahara
- JA Kagoshima Kouseiren Hospital, Kagoshima, Japan
| | - K Tokushige
- JA Kagoshima Kouseiren Hospital, Kagoshima, Japan
| | - M Ohishi
- Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Ninomiya Y, Kawasoe S, Ichiki H, Kubozono T, Miyahara H, Tokushige K, Ohishi M. Gender-specific relationship between abdominal obesity and prevalence of new-onset atrial fibrillation in the general Japanese population. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The number of incidences of atrial fibrillation (AF) is expected to rise rapidly in the near future because of the increased number of geriatric patients in Japanese society. In addition, obesity is increasing in the general Japanese population. Although a higher body mass index is associated with a higher risk of AF, the relationship between abdominal obesity (large waist circumference) and new-onset AF is unclear.
Methods and results
We performed a longitudinal retrospective observational study from January 2007 to October 2018 using the annual health checkup data. Data from 58,844 adults (29,572 males, age 54±13 years) without baseline AF, who underwent routine health checkups, were analyzed. We performed logistic regression analyses to determine the strength of the association between abdominal obesity and new-onset AF. We also examined the effect of abdominal obesity on the incidences of AF stratified by gender. During a median follow-up of 4 years, we recorded new cases of AF in 322 (0.5%) individuals. In univariate analysis, a large waist circumference was significantly associated with new-onset AF, both in males [hazard ratio (HR) 1.04, 95% confidence interval (CI) 1.02 to 1.05, p<0.001] and in females (HR 1.04, 95% CI 1.01 to 1.06, p=0.002), respectively. In multivariate analysis adjusted for clinical variables (age, hypertension, dyslipidemia, estimated glomerular filtration rate, habitual drinking and diabetes), a large waist circumference was significantly and independently associated with new-onset AF in males (HR 1.04, 95% CI 1.03 to 1.06, p<0.001), but not in females (HR 1.01, 95% CI 0.99 to 1.04, p=0.269).
Conclusion
Abdominal obesity is independently associated with an increased risk of new-onset AF in males. This association in males might imply some sex-specific mechanisms. There might be a gender difference in the effectiveness of interventions to decrease abdominal obesity to prevent AF.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - S Kawasoe
- Kagoshima University, Kagoshima, Japan
| | - H Ichiki
- Kagoshima University, Kagoshima, Japan
| | | | - H Miyahara
- Kagoshima Kouseiren Hospital, Kagoshima, Japan
| | - K Tokushige
- Kagoshima Kouseiren Hospital, Kagoshima, Japan
| | - M Ohishi
- Kagoshima University, Kagoshima, Japan
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Kawasoe S, Kubozono T, Ojima S, Miyahara H, Maenohara S, Ohishi M. P6232Exploring the bottom of J-shaped curve association between serum uric acid and cardiovascular risks: description using a large Japanese general population. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The J-shaped association between serum uric acid (SUA) and cardiovascular risks is known. However, the bottom of the J-shaped curve has not been elucidated because of the lack of epidemiological knowledge about hypouricemia.
Purpose
To explore the SUA levels related to the most preferable cardiovascular risks using data from a Japanese general population.
Methods
Data from 246,923 individuals (111,117 men and 135,806 women) who underwent routine health checkups between January 2001 and December 2015 were analyzed. The participants were divided into quartiles according to their SUA levels, and patients with hypouricemia (SUA level <2.0 mg/dL) were subdivided into two groups according to their distributions. We compared their characteristics, including their cardiovascular risks.
Results
The prevalence of hypouricemia was 0.46% overall, 0.21% for men, and 0.66% for women (P<0.001). The subjects with hypouricemia were divided into two groups according to SUA level: a lower hypouricemia group (0.4–1.1 mg/dL, which included a peak at 0.7–0.8 mg/dL) and a higher hypouricemia group (1.4–2.0 mg/dL). The two groups exhibited significanly different characteristics in several variables: body mass index and triglyceride in men, and age, body mass index, triglyceride, low-density lipoprotein cholesterol, and renal function in women. Furthermore, several cardiovascular risk factors showed the most preferable values in subjects with SUA 1.4–2.0 mg/dL (Figure).
Conclusions
There were two independent distributions in subjects with SUA ≤2.0 mg/dL. The individuals with SUA 1.4–2.0 mg/dL exhibited the most preferable values for several cardiovascular risk factors, suggesting an association with the bottom of the J-shaped curve between SUA and cardiovascular risks.
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Affiliation(s)
- S Kawasoe
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - T Kubozono
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - S Ojima
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - H Miyahara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - S Maenohara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - M Ohishi
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
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Ishiyama A, Kusabiraki S, Inoue M, Oya Y, Miyahara H, Takeshita E, Motohashi Y, Komaki H, Sasaki M, Nishino I. FSHD / OPMD / EDMD / DMI. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Kawasoe S, Kubozono T, Yoshifuku S, Ojima S, Miyata M, Miyahara H, Maenohara S, Ohishi M. P4467Uric acid level and incident atrial fibrillation in Japanese general population. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Kawasoe
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - T Kubozono
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - S Yoshifuku
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - S Ojima
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - M Miyata
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - H Miyahara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - S Maenohara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - M Ohishi
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
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10
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Kawasoe S, Ide K, Usui T, Kubozono T, Yoshifuku S, Miyahara H, Maenohara S, Ohishi M, Kawakami K. P5390Serum triglycerides are associated with arterial stiffness in subjects with low low-density lipoprotein cholesterol levels. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Kawasoe
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - K Ide
- Kyoto University, Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - T Usui
- Kyoto University, Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - T Kubozono
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - S Yoshifuku
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - H Miyahara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - S Maenohara
- Kagoshima Kouseiren Medical Health Care Center, Kagoshima, Japan
| | - M Ohishi
- Kagoshima University, Cardiovascular Medicine and Hypertension, Kagoshima, Japan
| | - K Kawakami
- Kyoto University, Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
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Takayanagi K, Takeuchi A, Nara Y, Miyahara H, Ikeda N. Arrhythmia Curve Interpretation Using a Dynamic System Model of the Myocardial Pacemaker. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1636850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:A problem of identifying the phase response curve of the myocardial pacemaker was investigated using a simple dynamic system model of cardiac arrhythmia. A hybrid optimization method of a genetic algorithm and a local optimization technique was employed to obtain a solution of the model fitting. The method was applied to two categories of arrhythmias, ventricular parasystole and high-degree AV block. The present study offered a new insight into the mechanism of cardiac arrhythmias.
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Kojima T, Ishikawa H, Nishida K, Tanaka S, Haga N, Yukioka M, Miyahara H, Hashimoto J, KImura T, Oda H, Niki Y, Liu M, Kojima M, Ishiguro N. FRI0102 Characteristics of Functional Impairment in Patients with Long-Standing Rheumatoid Arthritis Based on Range of Motion of Joints: Multicenter Prospective Cohort Study for Evaluation of Joint Surgery on Physical Function. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2431] [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: 11/03/2022]
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Sakuraba K, Fujimura K, Kamura S, Esaki Y, Miyahara H, Yoshikai Y, Yamada H. THU0055 IL-21 Signaling in B Cells is Critical for the Development of Collagen Induced Arthritis in Mice. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3434] [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: 11/03/2022]
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14
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Kojima T, Ishikawa H, Nishida K, Hashimoto J, Miyahara H, Tanaka S, Haga N, Niki Y, Kojima M, Ishiguro N. THU0602 Relationship Between Index of Activity Speed (Time Up and Go Test) and Patient-Reported Outcome in Patients with Long-Standing Rheumatoid Arthritis: Multicenter Prospective Cohort Study for Evaluation of Joint Surgery on Physical Function. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1494] [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: 11/03/2022]
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Kojima T, Ishikawa H, Nishida K, Hashimoto J, Miyahara H, Tanaka S, Haga N, Niki Y, Kojima M, Ishiguro N. AB1113 Characteristics of Physical Disability in Patients with Long-Standing Rheumatoid Arthritis: Baseline Analysis of Multicenter Prospective Cohort Study for Evaluation of Joint Reconstructive Procedure. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1789] [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: 11/04/2022]
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16
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Hanada Y, Sasai H, Kamakura A, Nakamura M, Sakata Y, Miyahara H. [Rupture of an internal carotid artery pseudoaneurysm after irradiation for a nasopharyngeal carcinoma--case report]. Nihon Jibiinkoka Gakkai Kaiho 2013; 116:606-11. [PMID: 23819358 DOI: 10.3950/jibiinkoka.116.606] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The primary treatment of nasopharyngeal carcinoma (NPC) has been external radiotherapy. Rupture of an internal carotid artery (ICA) pseudoaneurysm is a rare complication of irradiation therapy for a nasopharyngeal carcinoma. A 78 years old man had a history of NPC treated with radiotherapy in 1993. He was admitted to the hospital because of epistaxis. Angiography showed an ICA pseudoaneurysm pointing medially to the nasopharynx. Coil embolization of the ICA was performed, but cerebral infarction occurred. Internal carotid artery (ICA) pseudoaneurysms are an uncommon but potentially lethal condition. Angiography is the mainstay of diagnosis of the aneurysm and planning the embolization of the ICA. We should be more aware of this complication in NPC patients.
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Miyamoto K, Kimura A, Okuda T, Miyahara H, Kuroda K, Namatame H, Taniguchi M, Eremeev SV, Menshchikova TV, Chulkov EV, Kokh KA, Tereshchenko OE. Topological surface states with persistent high spin polarization across the Dirac point in Bi2Te2Se and Bi2Se2Te. Phys Rev Lett 2012; 109:166802. [PMID: 23215110 DOI: 10.1103/physrevlett.109.166802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Indexed: 06/01/2023]
Abstract
Helical spin textures with marked spin polarizations of topological surface states have been unveiled for the first time by state-of-the-art spin- and angle-resolved photoemission spectroscopy for two promising topological insulators, Bi(2)Te(2)Se and Bi(2)Se(2)Te. Their highly spin-polarized natures are found to be persistent across the Dirac point in both compounds. This novel finding paves a pathway to extending the utilization of topological surface states of these compounds for future spintronic applications.
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Affiliation(s)
- K Miyamoto
- Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan.
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Miyahara H, Yane K, Naitoh H, Konishi N, Kitahori Y, Matsunaga T, Hiasa Y. p53 tumor suppressor gene and ras oncogene mutations in hypopharyngeal squamous cell carcinomas. Int J Oncol 2012; 11:133-7. [PMID: 21528191 DOI: 10.3892/ijo.11.1.133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To examine the potential role of p53 and ras gene mutations in hypopharyngeal tumorigenesis, twenty-eight primary hypopharyngeal carcinomas, obtained at biopsy or total pharyngolaryngectomy, were investigated. Exons 5 through 9 of the p53 gene and exons 1 and 2 of the H-, K-, N-ras gene were screened using a combination of immunohistochemistry and single-strand conformation polymorphism analysis of polymerase chain reaction products (PCR-SSCP). The targeted DNA sequences coding for p53 and ras were confirmed by direct DNA sequencing. Point mutations of p53 were found in 9 (32.1%) of the 28 cases, including one with a double mutation, 3 in exon 5, 1 in exon 6, 2 in exon 7 and 4 in exon 8. Positive nuclear immunostaining for p53 was evident in 14 (50.0%) lesions. Seven (25.0%) of the 28 demonstrated point mutations in the H-rns gene, and 11 (39.3%) showed positive cytoplasmic staining for I as. The 5-year survival rate was worse with than without p53 overexpression (p <0.05). The present results suggest that gene mutations, although they occur at a relatively low incidence, are involved in hypopharyngeal tumorigenesis with p53 expression being a prognostic factor.
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Affiliation(s)
- H Miyahara
- NARA MED UNIV,DEPT PATHOL 2,KASHIHARA,NARA 634,JAPAN
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Okazaki K, Ota Y, Kotani Y, Malaeb W, Ishida Y, Shimojima T, Kiss T, Watanabe S, Chen CT, Kihou K, Lee CH, Iyo A, Eisaki H, Saito T, Fukazawa H, Kohori Y, Hashimoto K, Shibauchi T, Matsuda Y, Ikeda H, Miyahara H, Arita R, Chainani A, Shin S. Octet-Line Node Structure of Superconducting Order Parameter in KFe2As2. Science 2012; 337:1314-7. [DOI: 10.1126/science.1222793] [Citation(s) in RCA: 198] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Kuroda K, Miyahara H, Ye M, Eremeev SV, Koroteev YM, Krasovskii EE, Chulkov EV, Hiramoto S, Moriyoshi C, Kuroiwa Y, Miyamoto K, Okuda T, Arita M, Shimada K, Namatame H, Taniguchi M, Ueda Y, Kimura A. Experimental verification of PbBi2Te4 as a 3D topological insulator. Phys Rev Lett 2012; 108:206803. [PMID: 23003165 DOI: 10.1103/physrevlett.108.206803] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Indexed: 06/01/2023]
Abstract
The experimental evidence is presented of the topological insulator state in PbBi2Te4. A single surface Dirac cone is observed by angle-resolved photoemission spectroscopy with synchrotron radiation. Topological invariants Z2 are calculated from the ab initio band structure to be 1;(111). The observed two-dimensional isoenergy contours in the bulk energy gap are found to be the largest among the known three-dimensional topological insulators. This opens a pathway to achieving a sufficiently large spin current density in future spintronic devices.
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Affiliation(s)
- K Kuroda
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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Miyahara H, Nakashima R, Inoue M, Katsuda T, Yamaji H, Katoh S. Optimization and Performance of Silica-Based Media for Industrial-Scale Antibody Purification. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201100245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Ishizaka K, Bahramy MS, Murakawa H, Sakano M, Shimojima T, Sonobe T, Koizumi K, Shin S, Miyahara H, Kimura A, Miyamoto K, Okuda T, Namatame H, Taniguchi M, Arita R, Nagaosa N, Kobayashi K, Murakami Y, Kumai R, Kaneko Y, Onose Y, Tokura Y. Giant Rashba-type spin splitting in bulk BiTeI. Nat Mater 2011; 10:521-526. [PMID: 21685900 DOI: 10.1038/nmat3051] [Citation(s) in RCA: 225] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Accepted: 05/19/2011] [Indexed: 05/30/2023]
Abstract
There has been increasing interest in phenomena emerging from relativistic electrons in a solid, which have a potential impact on spintronics and magnetoelectrics. One example is the Rashba effect, which lifts the electron-spin degeneracy as a consequence of spin-orbit interaction under broken inversion symmetry. A high-energy-scale Rashba spin splitting is highly desirable for enhancing the coupling between electron spins and electricity relevant for spintronic functions. Here we describe the finding of a huge spin-orbit interaction effect in a polar semiconductor composed of heavy elements, BiTeI, where the bulk carriers are ruled by large Rashba-like spin splitting. The band splitting and its spin polarization obtained by spin- and angle-resolved photoemission spectroscopy are well in accord with relativistic first-principles calculations, confirming that the spin splitting is indeed derived from bulk atomic configurations. Together with the feasibility of carrier-doping control, the giant-Rashba semiconductor BiTeI possesses excellent potential for application to various spin-dependent electronic functions.
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Affiliation(s)
- K Ishizaka
- Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
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23
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Ogata Y, Ishigure N, Mochizuki S, Ito K, Hatano K, Abe J, Miyahara H, Masumoto K, Nakamura H. Distribution of thermal neutron flux around a PET cyclotron. Health Phys 2011; 100 Suppl 2:S60-S66. [PMID: 21451309 DOI: 10.1097/hp.0b013e3182004d89] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The number of positron emission tomography (PET) examinations has greatly increased world-wide. Since positron emission nuclides for the PET examinations have short half-lives, they are mainly produced using on-site cyclotrons. During the production of the nuclides, significant quantities of neutrons are generated from the cyclotrons. Neutrons have potential to activate the materials around the cyclotrons and cause exposure to the staff. To investigate quantities and distribution of the thermal neutrons, thermal neutron fluxes were measured around a PET cyclotron in a laboratory associating with a hospital. The cyclotron accelerates protons up to 18 MeV, and the mean particle current is 20 μA. The neutron fluxes were measured during both 18F production and C production. Gold foils and thermoluminescent dosimeter (TLD) badges were used to measure the neutron fluxes. The neutron fluxes in the target box averaged 9.3 × 10(6) cm(-2) s(-1) and 1.7 × 10(6) cm(-2) s(-1) during 18F and 11C production, respectively. Those in the cyclotron room averaged 4.1 × 10(5) cm(-2) s(-1) and 1.2 × 10(5) cm(-2) s(-1), respectively. Those outside the concrete wall shielding were estimated as being equal to or less than ∼3 cm s, which corresponded to 0.1 μSv h(-1) in effective dose. The neutron fluxes outside the concrete shielding were confirmed to be quite low compared to the legal limit.
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Affiliation(s)
- Yoshimune Ogata
- School of Health Sciences, Nagoya University, Daiko-Minami, Higashi-Ku, 461-8673 Nagoya, Japan.
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Miyahara H, Okazaki N, Nagakura T, Korematsu S, Izumi T. Elevated umbilical cord serum TARC/CCL17 levels predict the development of atopic dermatitis in infancy. Clin Exp Allergy 2010; 41:186-91. [DOI: 10.1111/j.1365-2222.2010.03634.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
OBJECTIVES We studied the long-term histological response of the human larynx to Gore-Tex implant and evaluated whether its biocompatibility. STUDY DESIGN Retrospective histological study. METHODS We conducted medialization laryngoplasty with expanded polytetrafluoroethylene (ePTEE or Gore-Tex) in a patient with vocal-fold paralysis. A strip of Gore-Tex was folded several times and inserted into the pocket preserving the inner perichondrium through a thyroid cartilage window. The patient died 12 months later and we histologically analyzed the larynx. RESULTS No evidence was seen of foreign body granuloma, migration, extrusion, or infection. A modest inflammatory response with a fibrous capsule was present around implants. We confirmed the infiltration of abundant collagen and numerous fibroblasts into the microporous implant structure. CONCLUSION Histological examination results suggest that Gore-Tex implants are safe and biocompatible with the human larynx. A slight inflammatory response and infiltration of fibrous tissue into the implant itself demonstrated that Gore-Tex implants are immunologically well tolerated.
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Affiliation(s)
- Hisanori Sasai
- Department of Otolaryngology-Head and Neck Surgery, Mita Hospital International University of Health & Welfare, Tokyo
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Seino Y, Nakajima H, Miyahara H, Kurita T, Bush M, Yang F, Stewart M. Safet and tolerability, pharmacokinetic and spharmacodynamics of albiglutide in Japanese subjects with type 2 diabetes: a comparison with an ethnically mixed population. Can J Diabetes 2009. [DOI: 10.1016/s1499-2671(09)33270-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kaibara N, Yamada H, Shuto T, Nakashima Y, Okazaki K, Miyahara H, Esaki Y, Hirata G, Iwamoto Y. Comparative histopathological analysis between tenosynovitis and joint synovitis in rheumatoid arthritis. Histopathology 2008; 52:856-64. [DOI: 10.1111/j.1365-2559.2008.03050.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- Kazuhiko Nario
- Department of Otorhinolaryngology, Nara Medical University
| | - Hiroshi Miyahara
- Department of Otorhinolaryngology, Head and Neck Surgery, Osaka General Medical Center
| | - Hisanori Sasai
- Department of Otorhinolaryngology, Head and Neck Surgery, Osaka General Medical Center
| | - Aya Kamakura
- Department of Otorhinolaryngology, Head and Neck Surgery, Osaka General Medical Center
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Sasai H, Watanabe Y, Miyahara H, Kubo T. [Effects and use of the suture direction mimicking only the force action of the lateral cricoarytenoid muscle in arytenoid adduction combined with thyroplasty type I]. Nihon Jibiinkoka Gakkai Kaiho 2007; 109:830-4. [PMID: 17233438 DOI: 10.3950/jibiinkoka.109.830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Isshiki's arytenoid adduction combined with thyroplasty type I is a useful procedure for correcting the membranous vocal fold atrophy and the height difference between the two vocal folds, particularly in patients with a large posterior glottal chink and atrophy. Conventional arytenoid adduction (Isshiki's arytenoid adduction) is designed to place a suture through the muscular process of the arytenoid attached anteriorly to the thyroid ala, stimulating the function of the thyroarytenoid muscle and lateral cricoarytenoid muscle. Combining with thyroplasty type I, the suture direction of conventional arytenoid adduction prevented inserting implant material into the pocket of the thyroid cartilage window. In contrast to conventional arytenoid adduction, the suture direction in our approach is anchored anteroinferiorly, mimicking only the action of the lateral cricoarytenoid muscle (the major adductor of the larynx). It is used the thyroid cartilage window in thyroplasty type I to determine the direction of the lateral cricoarytenoid muscle. After approaching the muscular process based on Isshiki's arytenoid adduction, two nylon sutures are tied across the muscular process or the lateral cricoarytenoid muscle nearby the muscular process. The cricoarytenoid joint is not dislocated. One of the sutures was anchored to the inferior rear corner of the thyroid cartilage window to be used with thyroplasty type I and the other was anchored to the rear lower margin of the thyroid lamina. Gore-tex medialization thyroplasty is done after tying the sutures on the thyroid ala. Subjects were 30 unilateral paralytic dysphonia. Maximum phonation of all patients improved significantly after surgery. The preoperative and postoperative mean maximum phonation times were 6.0 and 17.9 seconds. No major complications occurred in this study. Our approach effectively combined arytenoid adduction and thyroplasty type I for patients with severe insufficient glottic closure.
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Affiliation(s)
- Hisanori Sasai
- Department of Otolaryngology-Head and Neck Surgery, Osaka General Medical Center, Osaka
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Abstract
Delayed facial nerve palsy (DFP) is rarely experienced after otologic surgeries that do not directly touch the facial nerves, such as tympano-mastoidectomy, cochlear implants, and stapes surgery, and is troublesome to both surgeons and patients if it happens. Here, we report 7 cases of DFP, including one case that developed DFP after endolymphatic sac surgery. The ratios of occurrence were as follows: 0.7% (2/305) for tympano-mastoidectomy, 0.8% (3/354) for cochlear implant, 0.4% (1/260) for stapes surgery and 1.0% (1/98) for endolymphatic sac surgery. All otologic surgeries, except for endolymphatic sac surgery, exposed the chorda tympani, and all surgeries, except for stapes surgery, underwent drilling for a mastoidectomy. Furthermore, DFP was always observed ipsilaterally to the operated ear after otologic surgeries and was never seen after benign parotid tumor surgery or total laryngectomy. Therefore, there may be a strong relationship between DFP and the procedures, used during otologic surgeries.
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Miyahara H, Tsuruta Y, Yane K, Ogawa Y. Spindle cell carcinoma of the larynx. Auris Nasus Larynx 2004; 31:177-82. [PMID: 15121229 DOI: 10.1016/j.anl.2004.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2003] [Revised: 12/24/2003] [Accepted: 01/16/2004] [Indexed: 11/17/2022]
Abstract
Four rare cases of spindle cell carcinoma of the larynx are reported and the histo-pathological and immuno-histochemical findings are described. The spindle cell carcinoma involved the right vocal cord of an 88-year-old and an 86-year-old male patients and the anterior commissure of a 76-year-old and a 68-year-old male patients. Two patients underwent total laryngectomy, one patient extirpation under laryngomicrosurgery and one radiation therapy. All were well controlled thereafter and there was no recurrence. Surgery seemed to be the most satisfactory therapeutic approach and radiation therapy was effective in a patient with relatively small tumor. The histo-pathological and immuno-histochemical analysis in one patient revealed a sarcoma-like component of the carcinoma and the findings suggested that this was the result of a metaplastic change in the mesenchyme without inflammatory changes.
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Affiliation(s)
- Hiroshi Miyahara
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, 800 Shijo-cho, Kashihara 637-8522, Nara, Japan.
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Miyahara H, Nario K, Matsushiro N, Sasai H, Kajikawa H. [Four cases of hypopharyngeal cancer treated with docetaxel, cisplatin, and 5-FU followed by radiotherapy and/or neck dissection]. Gan To Kagaku Ryoho 2004; 31:739-42. [PMID: 15170983] [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: 04/29/2023]
Abstract
We treated 4 patients with hypopharyngeal cancer, each of whom had a complete response after 2 cycles of chemotherapy with docetaxel, cisplatin, and 5-FU followed by radiation and/or neck dissection. Twenty-one months to 2 years after this therapy, 3 patients had no recurrence and no metastasis with their laryngeal framework and function preserved. Chemotherapy including docetaxel, cisplatin, and 5-FU is a useful treatment for early head and neck cancer.
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Affiliation(s)
- Hiroshi Miyahara
- Division of Otolaryngology-Head and Neck Surgery, Osaka General Medical Center
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Kajikawa H, Nario K, Miyahara H. [A case of neck metastasis from hypopharyngeal carcinoma successfully treated with TS-1]. Gan To Kagaku Ryoho 2004; 31:631-4. [PMID: 15114715] [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: 04/29/2023]
Abstract
We report a case of hypopharyngeal carcinoma with recurrent neck metastasis. Preoperative chemoradiation and pharyngo-laryngo-esophagectomy with bilateral neck dissection was done as first-line therapy. Six months later, the carcinoma metastasized to the right paratracheal lymph node. Because of resistance to chemoradiation (CBDCA) as second-line therapy, we administered TS-1 for the treatment after 60 Gy radiation. The chemotherapy with TS-1 resulted in complete response by diagnostic imaging (CT). There was no sign of recurrence for 1 year after 5 courses of treatment. TS-1, which allows oral chemotherapy on an outpatient basis, would be a useful drug for treatment with radiotherapy in patients with advanced and/or recurrent head and neck cancer.
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Affiliation(s)
- Hiroshi Kajikawa
- Dept. of Otolaryngology and Sensory Organ Surgery, Graduate School of Medicine, Osaka University
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Abstract
Precise relative gamma-ray intensities of 56Mn and 72Ga produced by neutron irradiation of natural Mn3O4 and enriched 71Ga2O3 (99.8%) were measured by an HPGe detector with highly-precisely calibrated detection efficiencies. As both nuclides exhibit no beta branch to the ground state, the absolute emission probabilities of the 846.8 keV gamma ray for 56Mn and 834.0 keV gamma ray for 72Ga were determined to be 0.9888+/-0.0014 and 0.9553+/-0.0005, respectively.
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Affiliation(s)
- Hiroshi Miyahara
- Department of Radiological Technology, School of Health Sciences, Nagoya University, 1-1-20, Daikominami, Higashi-ku, Nagoya 461-8673, Japan.
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Abstract
199Pt has been produced by neutron irradiation of enriched 198Pt (95.71%) metal powder, and precise measurements have been made of the gamma-ray emission probabilities by means of 4pibeta-gamma coincidence apparatus and a live-timed two-dimensional data-acquisition system. Daughter 199Au decays with a half-life of 3.139 d, and therefore the measured disintegration rate had to be corrected. The absolute emission probability of the 543.0 keV gamma ray was determined to be 0.1174+/-0.0007 from the gamma-ray intensity and the corrected disintegration rate.
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Affiliation(s)
- Hiroshi Miyahara
- Department of Radiological Technology, School of Health Sciences, Nagoya University, 1-1-20, Daikominami, Higashi-ku, Nagoya 461-8673, Japan.
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Kajikawa H, Nario K, Kubo T, Miyahara H. The Usefulness of a Clinical Pathway for Patient Care Management Following Tonsillectomy. ACTA ACUST UNITED AC 2004. [DOI: 10.5631/jibirin.97.905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Miyahara H, Yane K, Naito K. [A case of posterior wall cancer of the hypopharynx treated with docetaxel followed by radiation]. Gan To Kagaku Ryoho 2003; 30:1139-42. [PMID: 12938269] [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: 03/04/2023]
Abstract
We treated a 67-year-old female with hypopharyngeal cancer (T2N0) in the posterior wall, who had a complete response after two cycles of chemotherapy with docetaxel followed by radiation. Five years after this therapy she has had no recurrence and no metastasis, with preserved laryngeal framework and function. Docetaxel is useful for treating early head and neck cancer.
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Affiliation(s)
- Hiroshi Miyahara
- Division of Otolaryngology-Head and Neck Surgery, Osaka Prefectural General Hospital
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Abstract
We retrospectively analyzed 213 patients--197 men and 14 women aged 40 to 87 years--with laryngeal cancer treated at our department from September 1986 to December 1997. The male to female ratio was about 12:1. Cases included 120 glottic (56.3%), 90 supraglottic (42.3%), and 3 subglottic (1.4%). Radiotherapy for early cases and surgery, mainly total laryngectomy for T3 and T4 were conducted first. The 5-year cause-specific survival by site was 97.6% glottic and 77.5% supraglottic. The five-year survival was 88.6% overall. Local control was 83.8% in glottic T1a and 84.6% in glottic T1b. The 3-year preservation of the larynx was 89.1% in glottic T1a and 92.3% in glottic T1b. Distant metastases were observed in 14 cases, mostly to the lung, bones, and liver. At high risk for distant metastasis were those with supraglottic T3-T4, N1, N2b, or pN2c.
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Affiliation(s)
- Hiroshi Miyahara
- Department of Otolaryngology Head and Neck Surgery, Nara Medical University, Nara
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41
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Miyahara H, Hayashi N, Fujiki K, Takeuchi N, Hino Y. Determination of the emission probabilities of the principal gamma-rays for 134Cs to a high precision. Appl Radiat Isot 2002; 56:131-5. [PMID: 11839005 DOI: 10.1016/s0969-8043(01)00178-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
While multi-gamma-ray emitting nuclides such as 75Se, 134Cs and 152Eu have reasonably well-defined decay scheme, some inconsistencies still remain. Detailed evaluations and weighted-mean analyses result in the recommendation of gamma-ray emission probabilities with small uncertainties, although significant deviations exist in the measured values. Therefore, the gamma-ray emission probabilities of 134Cs have been measured to a high precision after an extremely accurate calibration of detection efficiency. The resulting data agree extremely well with the evaluated values in IAEA-TECDOC-619 (IAEA, X-ray and gamma-ray standards for detector calibration, IAEA-TECDOC-619, IAEA, Vienna, 1991).
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Affiliation(s)
- Hiroshi Miyahara
- Department of Radiological Technology, School of Health Sciences, Nagoya University, Japan.
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Furuta S, Fukuda Y, Sugimoto T, Miyahara H, Kamada E, Sano H, Fukuta Y, Takei M, Kurimoto T. Pharmacodynamic analysis of steroid 5alpha-reductase inhibitory actions of Z-350 in rat prostate. Eur J Pharmacol 2001; 426:105-11. [PMID: 11525778 DOI: 10.1016/s0014-2999(01)01208-0] [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: 11/24/2022]
Abstract
The pharmacodynamics of (S)-4-[3-[4-[1-(4-methylphenyl)-3-[4-(2-methoxyphenyl)piperazine-1-yl]propoxy]benzoyl]indole-1-yl] butyric acid hydrochloride (Z-350), which has alpha(1)-adrenoceptor antagonistic and steroid 5alpha-reductase inhibitory effects, were investigated in rats. The disposition of Z-350 was a function of linear kinetics at doses from 1 to 30 mg/kg; the bioavailability was calculated to be 65.2%. The inhibition of 5alpha-reductase was dependent on the concentration of Z-350 in plasma and in the prostate. Analysis of the relationship between the concentration in the prostate and the inhibition seen after a single oral administration showed that the Hill constant was almost 1.0 and EC(50)(n(H)) was 47.4 ng/g of tissue; these parameters did not change after multiple administration. Z-350 inhibited 5alpha-reductase 1 h after oral administration at a dose of 3 mg/kg; maximum inhibition was observed after 2-4 h, and the inhibition (%) was maintained for 24 h after oral administration.
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Affiliation(s)
- S Furuta
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., 2512-1 Oshikiri, Konan-machi, Osato-gun, Saitama 360-0111, Japan.
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43
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Abstract
A simple high-performance liquid chromatographic assay with using UV detection (266 nm) was developed to determine a novel gastroprokinetic agent, Z-338 in dog plasma. The extraction procedure using solid-phase extraction with a Isolute SCX column produces extremely clean eluates and a high recovery. Intra- and inter-day variabilities were lower than 5%. The limit of quantitation of the method was 2.5 ng/ml. This assay was applied to the monitoring of Z-338 concentrations in dogs after oral administration. The method also appeared rapid, simple and suitable for therapeutic Z-338 monitoring.
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Affiliation(s)
- S Furuta
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., 2512-1 Oshikiri, Kohnan-machi, Ohsato-gun, 360-0111, Saitama-ken, Japan.
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44
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Abstract
Measurement of emission probabilities for principal gamma-rays of 159Gd with 4pibeta(ppc)-gamma(HPGe) coincidence apparatus has given precise values as indicated by uncertainties of about 1%. Improved certainties are seen when comparing the present results with emission probabilities evaluated in Nuclear Data Sheets (Helmer, 1994, p. 72) for which the uncertainties are about 24%. The improvement resulted in precise decay scheme parameters of the nuclide.
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Affiliation(s)
- N Marnada
- Department of Nuclear Engineering, Graduate School of Engineering, Nagoya University, Japan.
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45
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Takenaka S, Miyahara H, Yamashita K, Takagi M, Kondo H. Base mutation analysis by a ferrocenyl naphthalene diimide derivative. Nucleosides Nucleotides Nucleic Acids 2001; 20:1429-32. [PMID: 11563037 DOI: 10.1081/ncn-100002570] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
An electrochemical DNA sensing technique was developed by using ferrocenyl naphthalene diimide coupled with a probe DNA-immobilized electrode. This technique enabled detection of target DNA quickly and with high sensitivity. Applicability of this technique for single nucleotide polymorphisms (SNPs) analysis was demonstrated by successful analysis of a DNA mismatch on the cancer repression gene p53 with high precision.
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Affiliation(s)
- S Takenaka
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka 812-8581, Japan
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46
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Takeda T, Morimoto N, Kinukawa N, Nagamine R, Shuto T, Iwamoto Y, Miyahara H. Factors affecting emotional instability in female rheumatoid arthritis outpatients with limited functional disorder. Mod Rheumatol 2000. [DOI: 10.1007/s101650070010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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47
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Takeda T, Morimoto N, Kinukawa N, Nagamine R, Shuto T, Iwamoto Y, Miyahara H. Factors affecting emotional instability in female rheumatoid arthritis outpatients with limited functional disorder. Mod Rheumatol 2000; 10:240-6. [PMID: 24383637 DOI: 10.3109/s101650070010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract We attempted to identify which background factors were the most important indicators of such psychological problems as emotional instability, a feeling of hopelessness, and suicidal tendencies in female rheumatoid arthritis (RA) outpatients with limited functional disorder. Among female RA patients aged 20 years and older who visited the outpatient clinic, 101 class I and II patients were selected as subjects for the present study. An original questionnaire and a psychological test (CMI) were given to those subjects who had given their written consent to such testing, and an analysis was carried out on 85 patients who returned all the written forms. Their emotional instability was related to factors such as "not being able to understand the nature of RA disease and its treatment," "sense of value had changed after developing RA," "nonuse of drugs," and "duration of disease." A feeling of hopelessness was related to "smoking," and a suicidal tendency was related to "smoking" and "class I." We identified a characteristic correlation between emotional instability and background factors in this study. Paying close attention to these factors may thus be useful in preventing the appearance of psychological problems as well as in developing effective early treatment strategies.
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Affiliation(s)
- T Takeda
- Department of Neuropsychiatry, Graduate School of Medical Science, Kyushu University , 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582 , Japan
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48
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Horiuchi T, Tsukamoto H, Morita C, Sawabe T, Harashima S, Nakashima H, Miyahara H, Hashimura C, Kondo M. Mannose binding lectin (MBL) gene mutation is not a risk factor for systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) in Japanese. Genes Immun 2000; 1:464-6. [PMID: 11196679 DOI: 10.1038/sj.gene.6363710] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Mannose binding lectin (MBL) deficiency may be associated with increased susceptibility to infection and autoimmune disorders, such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). In the present study, we performed for the first systematic search for mutations in all the four exons of the MBL gene using polymerase chain reaction (PCR)/single-strand conformation polymorphism (SSCP) analysis. Of 49 healthy Japanese individuals studied, only the previously reported mutation at the codon 54 (substitution from Gly to Asp; G54D) was identified. The allele frequencies of G54D in 105 healthy Japanese individuals, 95 SLE patients and 59 RA patients, were 0.233, 0.226 and 0.178, respectively, which were not significantly different. In addition, two polymorphisms at positions of -550 and -221 in the promoter region were not associated with SLE and RA. It is unlikely that MBL deficiency plays a major role in the pathogenesis of SLE and RA in Japanese.
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Affiliation(s)
- T Horiuchi
- Kyushu University Graduate School of Medical Sciences, Fukuoka 812-8582, Japan.
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49
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Kanata H, Yane K, Ota I, Miyahara H, Matsunaga T, Takahashi A, Ohnishi K, Ohnishi T, Hosoi H. CDDP induces p53-dependent apoptosis in tongue cancer cells. Int J Oncol 2000; 17:513-7. [PMID: 10938392 DOI: 10.3892/ijo.17.3.513] [Citation(s) in RCA: 2] [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: 11/05/2022] Open
Abstract
We have investigated the CDDP sensitivities of two tongue cancer cell lines with differing p53 genetic status, one with wild-type p53 (SAS) and the other with mutant-type p53 (HSC-4). SAS was about 2 times more sensitive at the D10 dose and demonstrated increased p53 and Bax protein levels at 10 h after CDDP treatment on Western blot analysis. On the other hand, overexpression of p53 in HSC-4 was observed without CDDP treatment and no elevation of Bax could be detected. Apoptosis was observed after CDDP treatment in SAS but not in HSC-4 by Hoechst 33342-staining and electrophoresis methods. These findings indicate that p53 plays an important role in apoptosis as a positive regulator of Bax expression. It is suggested that p53 status may have predictive potential with regard to response to CDDP therapy.
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Affiliation(s)
- H Kanata
- Department of Otorhinolaryngology, NARA Medical University, Kashihara, Nara, Japan.
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50
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Kamijo T, Yokose T, Hasebe T, Yonou H, Sasaki S, Hayashi R, Ebihara S, Miyahara H, Hosoi H, Ochiai A. Potential role of microvessel density in predicting radiosensitivity of T1 and T2 stage laryngeal squamous cell carcinoma treated with radiotherapy. Clin Cancer Res 2000; 6:3159-65. [PMID: 10955798] [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: 02/17/2023]
Abstract
Curative radiotherapy is the first choice of therapy for T1 and T2 stage laryngeal squamous cell carcinoma (LSCC) patients to preserve their phonation. Patients with recurrent tumors who undergo salvage surgery require prolonged nasal feeding. Therefore, clinical interest has been focused on elucidating a predictive factor indicating which tumors are likely to be radiosensitive before radiotherapy. We analyzed the relations between radiosensitivity and clinicopathological factors (gender, tumor location, histological factors, and clinical tumor-node-metastasis stage), expression of apoptosis-related proteins (p53, bax, bcl-2), apoptotic index using the terminal deoxynucleotidyltransferase-mediated nick end labeling method, expression of cell proliferation-related proteins (Ki-67-labeling index and epidermal growth factor receptor overexpression) and microvessel density (MVD, vessels/field = 0.391 mm2) in biopsy specimens from 31 LSCC patients given radiotherapy (total radiotherapy dose of 52-70 Gy over 4-6.5 weeks). Univariate analysis revealed that tumors with a high MVD (> or =35 vessels/field) showed better radiosensitivity than those with a low MVD (<35 vessels/field, P = 0.008) and that a high Ki-67-labeling index (> or =40%) was weakly associated with radiosensitivity (P = 0.056). Multivariate analysis and Kaplan-Meier analysis showed that MVD alone had significant predictive power for radiosensitivity in T1 and T2 stage LSCCs after radiotherapy (P = 0.012, 0.0003, respectively). No significant association between clinicopathological factors, or of overexpression of p53, bax, bcl-2, epidermal growth factor receptor, or apoptotic index, with radiosensitivity was found. These results indicate that MVD is a potentially useful clinical factor predicting radiosensitivity for patients with early stage LSCCs before treatment.
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Affiliation(s)
- T Kamijo
- Pathology, Division, National Cancer Center Research Institute East, Chiba, Japan
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