1
|
Sakae Y, Takada H, Ichinose S, Nakajima M, Sakai A, Ogawa R. Treatment with YIGSR peptide ameliorates mouse tail lymphedema by 67 kDa laminin receptor (67LR)-dependent cell-cell adhesion. Biochem Biophys Rep 2023; 35:101514. [PMID: 37521371 PMCID: PMC10372372 DOI: 10.1016/j.bbrep.2023.101514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 08/01/2023] Open
Abstract
Impaired microcirculation can cause lymphatic leakage which leads to a chronic swelling in the tissues of the body. However, no successful treatment gives any protection against lymphedema due to the lack of well-revealed pathophysiology of secondary lymphedema. Binary image of laminin immunohistochemical expression revealed that distribution of laminin expression localized during surgically induced lymphedema. 67 kDa laminin receptor (67LR) mRNA expression showed a peak at during lymphedema exacerbation. Since the response of 67LR molecules may affect the prevention of inflammation and edema, here we have hypothesized that 67LR ligand of YIGSR peptide could permit reconstructive environment for amelioration of lymphedema and evaluated the effect of YIGSR in a mouse tail model of lymphedema. Indeed, intra-abdominal injections of YIGSR for the first 3 days after inducing lymphedema in the mouse tail model reduced the tail lymphedema on day 14 by 27% (P = 0.035). Histology showed that YIGSR treatment protected lymphedema impairment in epidermis and dermis, and it also inhibited the expansion of intercellular spaces and enhanced especially cell adhesion in the basement membrane as revealed by transmission electron microscopy. Interestingly, the treatment also reduced the local expression of transforming growth factor (TGF)β. Further elucidation of the mechanisms of 67LR-facilitated lymphangiogenesis contributes to find potential targets for the treatment of lymphedema.
Collapse
Affiliation(s)
- Y. Sakae
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Japan
| | - H. Takada
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Japan
- Department of Anti-Aging and Preventive Medicine, Nippon Medical School, Japan
| | - S. Ichinose
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Japan
| | - M. Nakajima
- Department of Pharmacology, Nippon Medical School, Japan
| | - A. Sakai
- Department of Pharmacology, Nippon Medical School, Japan
| | - R. Ogawa
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Japan
- Department of Anti-Aging and Preventive Medicine, Nippon Medical School, Japan
| |
Collapse
|
2
|
Morita A, Horiuchi A, Ota H, Horiuchi I, Takada H. Rising Trends of Endoscopic Barrett's Esophagus and Gastric Fundic Gland Polyps in Young Japanese Adults. Turk J Gastroenterol 2023; 34:925-931. [PMID: 37485560 PMCID: PMC10544187 DOI: 10.5152/tjg.2023.22533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/13/2022] [Indexed: 07/25/2023]
Abstract
BACKGROUND/AIMS This study examined changes in the esophageal-gastric junction and gastric mucosa in young Japanese adults undergoing endoscopy in the last 15 years. MATERIALS AND METHODS This was a retrospective study of young Japanese adults (aged 19-30 years) who underwent esophagogastrod uodenoscopy between 2006 and 2020. The indications were upper gastrointestinal symptoms and anemia. Changes in the appearance of the esophago-gastric junction (i.e., the Z line and distal esophagitis) and gastric mucosa were examined. Endoscopic Barrett's esophagus was defined using the Japanese criteria. RESULTS One thousand eight hundred forty-five patients were examined: 848 from 2006 to 2012 [400 males, mean age 26.5 years (range 19-30)] and 997 from 2013 to 2020 [433 males, mean age 26.2 years (range 19-30)]. The proportion showing endoscopic Barrett's esophagus and gastric fundic gland polyps increased significantly between the 2 periods (12.5% vs. 22.4%, P < .001; 3.4% vs. 7.2%, P < .001) with a significant correlation between the prevalence trends for endoscopic Barrett's esophagus and gastric fundic gland polyps (r = 0.789, P = .0008). Pathological examination showed that the prevalence of traditional fundic gland polyps unrelated to the use of proton pump inhibitors significantly increased from 40% (4/10) to 81% (25/31) between the 2 periods (P = .04). CONCLUSION The prevalence of both endoscopic Barrett's esophagus and gastric fundic gland polyps among young Japanese adults significantly increased in the last 15 years. The trend in endoscopic Barrett's esophagus was significantly correlated with that of nonproton pump inhibitor-related gastric fundic gland polyps.
Collapse
Affiliation(s)
- Atushi Morita
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Akira Horiuchi
- Digestive Disease Center, Showa Inan General Hospital, Komagane, Japan
| | - Hiroyoshi Ota
- Department of Biomedical Laboratory Medicine, Shinshu University Faculty of Medicine, Matsumoto, Japan
| | - Ichitaro Horiuchi
- Department of Gastroenterology, Shinshu University Faculty of Medicine, Matsumoto, Japan
| | - Hidetosi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| |
Collapse
|
3
|
Abstract
BACKGROUND Few studies have assessed depression in healthcare workers (HCWs) in Japan owing to the coronavirus disease 2019 (COVID-19) pandemic, and no studies have proposed effective interventions to help support their mental health. AIMS To test the hypothesis that enhancing access to mental healthcare professionals helps to improve HCWs' mental health. METHODS This cross-sectional study assessed depressive symptoms in HCWs at three hospitals in Osaka prefecture between May and July, 2020. The survey obtained information on HCWs' mental state and related situations/perceptions. Multivariable logistic regression analysis was performed to identify factors associated with depressive symptoms. RESULTS Of the 3291 eligible HCWs, 1269 (39%) completed the survey. Of all HCWs, 87 (7%) were physicians, and 700 (55%) were nurses. A total of 181 (14%) HCWs had moderate-to-severe symptoms of depression. Being a frontline worker was not significantly associated with depressive symptoms (odds ratio: 0.86 [95% confidence intervals: 0.54-1.37], P = 0.50). The unwillingness to consult with anyone was significantly associated with more severe depressive symptoms (1.70 [1.10-2.63], P < 0.01). HCWs who had no opportunity to confide in family/friends (1.66 [1.10-2.52], P < 0.01) or colleagues/supervisors (3.19 [2.22-4.58], P < 0.001) were significantly more likely to have depressive symptoms. CONCLUSIONS Being a frontline HCW in a Japanese hospital treating patients with COVID-19 was not significantly associated with having depressive symptoms. The study highlights that encouraging daily communication with close persons (family, friends, colleagues and supervisors), rather than improving access to mental health professionals, might help to prevent depression in HCWs during the COVID-19 pandemic.
Collapse
Affiliation(s)
- H Takada
- Osaka Prefectural Mental Health Centre, Bandai-higashi 3-1-46, Sumiyoshi, Osaka, Japan
| | - R Ae
- Division of Public Health, Centre for Community Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke, Tochigi, Japan
| | - M Ogawa
- Health Service Centre, Jichi Medical University, Yakushiji 3311-1, Shimotsuke, Tochigi, Japan
| | - T Kagomoto
- Osaka Prefectural Mental Health Centre, Bandai-higashi 3-1-46, Sumiyoshi, Osaka, Japan
| |
Collapse
|
4
|
Naniwa S, Yamada S, Awano K, Yoshida A, Takami K, Tagashira T, Tsuda S, Terashita D, Takada H, Akita T, Takata K, Kunigita T, Nishijo K. Impact of wall shear stress affected by anatomical difference between acute and chronic coronary syndrome in patients with LAD proximal disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1075] [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
Recent hemodynamic studies have demonstrated that progression of coronary atherosclerosis occurs at low wall share-stress site, whereas plaque rupture frequently occurs at high share stress site. It is well recognized that wall shear stress is relatively low along the outer walls of the bifurcation.
We investigated consecutive 140 patients (77 with acute coronary syndrome (ACS) and 63 with chronic coronary syndrome (CCS) performed PCI for LAD proximal lesions (AHA seg.6) from January 2016 to December 2019. In CCS group, entry criteria included stenosis of at least 90% in the LAD proximal lesion or at least 70% in the LAD proximal lesion and objective evidence of myocardial ischemia (inducible ischemia with either exercise or pharmacologic vasodilator stress or with pressure wire). Exclusion criteria were patients with maintenance dialysis, chronic total occlusion lesions, in-stent restenosis, and clinically diagnosed unstable angina without troponin I elevation. We measured the distance from LMT distal carina to the culprit site (Distance) and plaque location (Location) with intravascular ultrasound and angle between LMT and LAD with cardiovascular angiography analysis system (CAAS) (Angle).
The two groups were generally well balanced with regard to baseline clinical characteristics. The mean (±SD) age of the patients was 69.0±11.8 years, and 75% were men. Medication at baseline was also similar between two groups except higher prevalence of statin prescription in CCS group. The Distance was shorter and Angle was steeper in CCS group than in ACS group. The number of patients with Angle less than 150 degrees and with Location in the lateral wall side was much more in CCS group.
In this study, plaques in CCS were frequently observed at low shear stress site, whereas those in ACS at high shear stress site. Plaque progression in CCS may be associated with low wall shear stress, and high shear stress may play key role in plaque rupture in ACS. This anatomical difference can partly explain the different mechanisms of onset between of ACS and CCS.
Funding Acknowledgement
Type of funding sources: None. Anatomical differenceCharacteristics and results
Collapse
Affiliation(s)
- S Naniwa
- Kita-Harima Medical Centre, Ono, Japan
| | - S Yamada
- Kita-Harima Medical Centre, Ono, Japan
| | - K Awano
- Kita-Harima Medical Centre, Ono, Japan
| | - A Yoshida
- Kita-Harima Medical Centre, Ono, Japan
| | - K Takami
- Kita-Harima Medical Centre, Ono, Japan
| | | | - S Tsuda
- Kita-Harima Medical Centre, Ono, Japan
| | | | - H Takada
- Kita-Harima Medical Centre, Ono, Japan
| | - T Akita
- Kita-Harima Medical Centre, Ono, Japan
| | - K Takata
- Kita-Harima Medical Centre, Ono, Japan
| | | | - K Nishijo
- Kita-Harima Medical Centre, Ono, Japan
| |
Collapse
|
5
|
Hama M, Horie R, Kubota T, Matsumura T, Kimura E, Nakamura H, Takahashi M, Takada H. MYOTONIC DYSTROPHY. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.258] [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: 10/20/2022]
|
6
|
Yamashita K, Tanaka H, Hatazawa K, Tanaka Y, Sumimoto K, Shono A, Suzuki M, Yokota S, Suto M, Mukai J, Takada H, Matsumoto K, Minami H, Hirata K. Association between clinical risk factors and left ventricular function in patients with breast cancer following chemotherapy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1155] [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 sequential or concurrent use of two different types of agents such as anthracyclines and trastuzumab may increase myocardial injury and cancer therapeutics-related cardiac dysfunction (CTRCD), which is often the result of the combined detrimental effect of the two therapies for breast cancer patients. For risk stratification to detect the development of CTRCD, the current position paper from the European Society of Cardiology (ESC) lists several factors associated with risk of cardiotoxicity following treatment with chemotherapy. However, the association between clinical risk factors and left ventricular (LV) function in breast cancer patients is currently unclear.
Purpose
Our purpose was to investigate the impact of baseline risk factors on LV function in patients with preserved LV ejection fraction (LVEF) who have undergone anthracycline or trastuzumab chemotherapy for breast cancer.
Methods
We studied 86 breast cancer patients treated with anthracyclines, trastuzumab, or both. Mean age was 59±13 years and LVEF was 67±5%. In accordance with the current definition, CTRCD was defined as a decline in LVEF of >10% to an absolute value of <53% after chemotherapy. Based on the 2016 ESC position paper, clinical risk factors for CTRCD were defined as: (1) a cumulative total doxorubicin dose of ≥240 mg/m2, (2) age ≥65-year-old, (3) body mass index ≥30 kg/m2, (4) a previous history of radiation therapy to chest or mediastinum, (5) B-type natriuretic peptide ≥100pg/mL, (6) a previous history of cardiovascular disease, (7) atrial fibrillation, (8) hypertension, (9) diabetes mellitus, (10) current or ex-smoker.
Results
The relative decrease in LVEF after chemotherapy for patients with more than four risk factors was significantly greater than that for patients without (−9.3±10.8% vs. −2.2±10.2%; p=0.02). However, this finding did not apply to patients with more than one, two or three risk factors. Patients with more than four risk factors also tended to show a higher prevalence of CTRCD than those without (14.3% vs. 2.8%, p=0.12). Moreover, patients with more than four risk factors were more likely to have higher LV mass index (109.3±29.0 g/m2 vs. 83.2±21.0g /m2, p<0.001), lower global longitudinal strain (18.4±2.8% vs. 20.0±2.6%, p=0.06) and higher E/e' (10.4 (8.9–13.0) vs. 9.0 (7.4–10.9), p=0.06) compared to those without.
Conclusions
Association between clinical risk factors and LV dysfunction following chemotherapy became stronger with an increase in the number of risk factors in breast cancer patients, and was especially strong for patients treated with chemotherapy who had more than four risk factors. Our findings can thus be expected to have clinical implications for better management of patients with breast cancer referred for chemotherapy.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
| | | | | | | | | | - A Shono
- Kobe University, Kobe, Japan
| | | | | | - M Suto
- Kobe University, Kobe, Japan
| | - J Mukai
- Kobe University, Kobe, Japan
| | | | | | | | | |
Collapse
|
7
|
Shiraki H, Tanaka H, Yamashita K, Tanaka Y, Sumimoto K, Shono A, Suzuki M, Yokota S, Suto M, Mukai J, Takada H, Matsumoto K, Fukuzawa K, Hirata K. Consideration of non-valvular atrial fibrillation with left atrial appendage thrombus formation despite under appropriate oral anticoagulation therapy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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
Atrial fibrillation (AF) is the most frequently sustained cardiac arrhythmia, with a prevalence of about 2–3% in the general population. In accordance with CHADS2 or CHA2DS2-VASc score, appropriate oral anticoagulation therapy such as warfarin or direct oral anticoagulants (DOAC) significantly reduced the risk of thromboembolic events. However, left atrial (LA) thrombus can be detected in the LA appendage (LAA) in AF patients despite appropriate oral anticoagulation therapy.
Purpose
Our purpose was to investigate the associated factors of LAA thrombus formation in non-valvular atrial fibrillation (NVAF) patients despite under appropriate oral anticoagulation therapy.
Methods
We retrospectively studied consecutive 286 NVAF patients for scheduled catheter ablation or electrical cardioversion for AF in our institution between February 2017 and September 2019. Mean age was 67.1±9.4 years, 79 patients (29.5%) were female, and 140 (52.2%) were paroxysmal AF. All patients underwent transthoracic and transesophageal echocardiography before catheter ablation or electrical cardioversion. All patients received appropriate oral anticoagulation therapy including warfarin or DOAC for at least 3 weeks prior to transesophageal echocardiography based on the current guidelines. LAA thrombus was defined as an echodense intracavitary mass distinct from the underlying endocardium and not caused by pectinate muscles by at least three senior echocardiologists.
Results
Of 286 NVAF patients with under appropriate oral anticoagulation therapy, LAA thrombus was observed in 9 patients (3.3%). Univariate logistic regression analysis showed that age, paroxysmal AF, CHADS2 score ≥3, left ventricular end-diastolic volume index (LVEDVI), left ventricular ejection fraction (LVEF), left ventricular mass index (LVMI), LA volume index (LAVI), mitral inflow E and mitral e' annular velocities ratio (E/e'), and LAA flow were associated with LAA thrombus formation. It was noteworthy that multivariate logistic regression analysis showed that LAA flow was independent predictor of LAA thrombus (OR: 0.72, 95% CI: 0.59–0.89, p<0.005) as well as LVEF. Furthermore, receiver operating characteristic (ROC) curve analysis identified the optimal cutoff value of LAA flow for predicting LAA thrombus as ≤15cm/s, with a sensitivity of 88%, specificity of 93%, and area under the curve (AUC) of 0.95.
Conclusions
LAA flow was strongly associated with LAA thrombus formation even in NVAF patients with appropriate oral anticoagulation therapy. According to our findings, further strengthen of oral anticoagulation therapy or percutaneous transcatheter closure of the LAA may be considered in NVAF patients with appropriate oral anticoagulation therapy but low LAA flow, especially <15cm/s.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
| | | | | | | | | | - A Shono
- Kobe University, Kobe, Japan
| | | | | | - M Suto
- Kobe University, Kobe, Japan
| | - J Mukai
- Kobe University, Kobe, Japan
| | | | | | | | | |
Collapse
|
8
|
Shichiji M, Kihara Y, Ishiguro K, Sato T, Takahashi M, Komaki H, Takada H, Kuru S, Matsumura T, Ishigaki K. FSHD / OPMD / MYOTONIC DYSTROPHY. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.236] [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: 11/26/2022]
|
9
|
Ueno K, Takada H, Matsuo H, Kuru S, Goto K, Mitsui T, Ishizaki M, Sugimoto S, Ogata K, Matsumura T, Suwazono S, Furuya H, Watanabe A, Kawano Y, Yamamoto A, Sasagasako N, Arahata H. P.87Carnitine deficiency in patients with neuromuscular diseases on long-term tube feeding. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Abstract
Abstract
One aim of animal behaviour research is to explain why animals live in groups. The grouping behaviour of solitary mammals is important for understanding the ecological factors promoting the evolution of sociality. We present field data of Japanese serow, a primitive solitary ungulate, in forest and alpine meadow habitats. We found no differences in group size of all age–sex classes between the forest and alpine meadow habitats, and both populations were mainly solitary. The current findings suggest that group size in the serow is not affected by ecological conditions, including habitat structure, forage abundance, and population density. However, female associations involving up to three females occurred in the alpine meadow habitat throughout the year, whereas such groupings were not observed in the forest habitat. This finding suggests that abundant food supply in the alpine meadow promoted female associations by decreasing the cost of food resource competition.
Collapse
Affiliation(s)
- H. Takada
- aMount Fuji Research Institute Yamanashi Prefecture Government, 5597-1, Kenmarubi, Kamiyoshida, Fijiyoshida, Yamanashi 403-0005, Japan
- bLaboratory of Wildlife Ecology and Conservation, School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| | - M. Minami
- bLaboratory of Wildlife Ecology and Conservation, School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
| |
Collapse
|
11
|
Ogata K, Kosuga M, Takeshita E, Matsumura T, Ishigaki K, Ozasa S, Arahata H, Sugie K, Takahashi T, Kuru S, Kobayashi M, Takada H, Hattori A, Takahashi M, Tanaka N, Kimura T, Funato M, Okuyama T, Komaki H. METABOLIC MYOPATHIES II. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
12
|
Matsuzoe H, Matsumoto K, Tanaka H, Tahara N, Izawa Y, Toba T, Mori S, Suto M, Mukai J, Takada H, Soga F, Hatani Y, Hatazawa K, Shimoyama S, Hirata K. P6483Integrated assessment of aortic valve resistance using multi-detector computed tomography and echocardiography reflects aortic valvular burden and has prognostic value in patients with aortic stenosis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6483] [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)
- H Matsuzoe
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - K Matsumoto
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - H Tanaka
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - N Tahara
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - Y Izawa
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - T Toba
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - S Mori
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - M Suto
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - J Mukai
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - H Takada
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - F Soga
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - Y Hatani
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - K Hatazawa
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| | - S Shimoyama
- Kobe University, Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Hirata
- Kobe University, Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe, Japan
| |
Collapse
|
13
|
Suto M, Matsumoto K, Shibata N, Yokota S, Mukai J, Hisamatsu E, Takada H, Soga F, Dokuni K, Hatani Y, Hatazawa K, Matsuzoe H, Tanaka H, Hirata K. P1610Non-invasive assessment of preload reserve using the leg-positive pressure manoeuvre in patients with repaired tetralogy of Fallot. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1610] [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)
- M Suto
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - K Matsumoto
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - N Shibata
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - S Yokota
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - J Mukai
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - E Hisamatsu
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - H Takada
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - F Soga
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - K Dokuni
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - Y Hatani
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - K Hatazawa
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - H Matsuzoe
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - H Tanaka
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| | - K Hirata
- Kobe University, Division of Cardiovascular Medicine, Kobe, Japan
| |
Collapse
|
14
|
Teshigawara M, Ikeda Y, Ooi M, Harada M, Takada H, Kakishiro M, Noguchi G, Shimada T, Seita K, Murashima D, Fukatani K, Kanomata K, Teraoku T. Implementation of a low-activation Au-In-Cd decoupler into the J-PARC 1 MW short pulsed spallation neutron source. Nuclear Materials and Energy 2018. [DOI: 10.1016/j.nme.2018.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Ogata K, Kosuga M, Takeshita E, Matsumura T, Ishigaki K, Ozasa S, Arahata H, Sugie K, Takahashi T, Kuru S, Hattori A, Takada H, Kobayashi M, Takahashi M, Tanaka N, Okuyama T, Komaki H. High-risk screening for late-onset Pompe disease in Japan. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2324] [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]
|
16
|
Takada H, Odaira K, Konagaya M. Change over time in the treatment condition for patients with subacute myelo-optico-neuropathy in Japan. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Saito T, Ogata K, Takahashi T, Kobayashi M, Takada H, Kuru S, Mikata T, Matsumura T, Arahata H, Fukudome T, Funato M, Yonemoto N, Kimura E. Study on factor related to general condition and prognosis of patients with duchenne muscular dystrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2337] [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]
|
18
|
Murata K, Motomura Y, Tanaka T, Kanno S, Yano T, Onimaru M, Shimoyama A, Nishio H, Sakai Y, Oh-Hora M, Hara H, Fukase K, Takada H, Masuda S, Ohga S, Yamasaki S, Hara T. Calcineurin inhibitors exacerbate coronary arteritis via the MyD88 signalling pathway in a murine model of Kawasaki disease. Clin Exp Immunol 2017. [PMID: 28640392 DOI: 10.1111/cei.13002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Calcineurin inhibitors (CNIs) have been used off-label for the treatment of refractory Kawasaki disease (KD). However, it remains unknown whether CNIs show protective effects against the development of coronary artery lesions in KD patients. To investigate the effects of CNIs on coronary arteries and the mechanisms of their actions on coronary arteritis in a mouse model of KD, we performed experiments with FK565, a ligand of nucleotide-binding oligomerization domain-containing protein 1 (NOD1) in wild-type, severe combined immunodeficiency (SCID), caspase-associated recruitment domain 9 (CARD9)-/- and myeloid differentiation primary response gene 88 (MyD88)-/- mice. We also performed in-vitro studies with vascular and monocytic cells and vascular tissues. A histopathological analysis showed that both cyclosporin A and tacrolimus exacerbated the NOD1-mediated coronary arteritis in a dose-dependent manner. Cyclosporin A induced the exacerbation of coronary arteritis in mice only in high doses, while tacrolimus exacerbated it within the therapeutic range in humans. Similar effects were obtained in SCID and CARD9-/- mice but not in MyD88-/- mice. CNIs enhanced the expression of adhesion molecules by endothelial cells and the cytokine secretion by monocytic cells in our KD model. These data indicated that both vascular and monocytic cells were involved in the exacerbation of coronary arteritis. Activation of MyD88-dependent inflammatory signals in both vascular cells and macrophages appears to contribute to their adverse effects. Particular attention should be paid to the development of coronary artery lesions when using CNIs to treat refractory KD.
Collapse
Affiliation(s)
- K Murata
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Motomura
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - T Tanaka
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Kanno
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Yano
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan
| | - M Onimaru
- Division of Pathophysiological and Experimental Pathology, Department of Pathology, Kyushu University, Fukuoka, Japan
| | - A Shimoyama
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka, Japan
| | - H Nishio
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M Oh-Hora
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - H Hara
- Department of Immunology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - K Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka, Japan
| | - H Takada
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Masuda
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan
| | - S Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Yamasaki
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - T Hara
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.,Fukuoka Children's Hospital, Fukuoka, Japan
| |
Collapse
|
19
|
Takada H, Hosoya T, Kimura N, Kawahata K, Kohsaka H. Successful use of rituximab in a patient with refractory thrombotic thrombocytopaenic purpura complicated by polymyositis. Scand J Rheumatol Suppl 2017; 46:163-165. [DOI: 10.1080/03009742.2016.1181204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- H Takada
- Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan
| | - T Hosoya
- Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan
| | - N Kimura
- Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan
| | - K Kawahata
- Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan
| | - H Kohsaka
- Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Japan
| |
Collapse
|
20
|
Sugawara Y, Uehara A, Fujimoto Y, Kusumoto S, Fukase K, Shibata K, Sugawara S, Sasano T, Takada H. Toll-like Receptors, NOD1, and NOD2 in Oral Epithelial Cells. J Dent Res 2016; 85:524-9. [PMID: 16723649 DOI: 10.1177/154405910608500609] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [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: 01/01/2023] Open
Abstract
Oral epithelium might be the first barrier against oral bacteria in periodontal tissue. We hypothesized that oral epithelium is endowed with innate immune receptors for bacterial components, which play roles in host defense against bacterial infection without being accompanied by excessive inflammatory responses. We found clear expression of Toll-like receptor (TLR)4 as well as TLR2, and strong expression of NOD1 and NOD2 in normal oral epithelial tissues by immunohistochemical analysis. We also showed that primary oral epithelial cells in culture expressed these molecules using PCR, flow cytometry, and immunostaining. In inflamed oral epithelium, cell-surface localizations of TLR2 and TLR4 were more clearly observed than in healthy tissue. Upon stimulation with synthetic ligands for these receptors, the expression of β-defensin 2 was markedly up-regulated. These findings indicate that these molecules in oral epithelial cells are functional receptors that induce antibacterial responses.
Collapse
Affiliation(s)
- Y Sugawara
- Division of Oral Diagnosis, Department of Oral Medicine and Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Saito T, Ogata K, Kobayashi M, Takahashi T, Kuru S, Matsumura T, Takada H, Mikata T, Funato M, Arahata H, Fukudome T, Yonemoto N, Kimura E. Life prognostic factor of patients with Duchenne muscular dystrophy. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.134] [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: 11/17/2022]
|
22
|
|
23
|
Takada H, Nagata K, Hirata Y, Satoh Y, Watahiki Y, Sugawara J, Yokoyama E, Kondoh Y, Shishido F, Inugami A. Age-related decline of cerebral oxygen metabolism in normal population detected with positron emission tomography. Neurol Res 2016; 14:128-31. [PMID: 1355868 DOI: 10.1080/01616412.1992.11740031] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 10/21/2022]
Abstract
Using positron emission tomography (PET), cerebral blood flow (CBF) and cerebral metabolic rate of oxygen (CMRO2) were measured in 32 healthy volunteers aged from 27 to 67 years. In bilateral putamen, left supratemporal, left infrafrontal and left parietal cortices, CMRO2 showed a significant decline during aging. The age-related decline of CBF was seen only at the left superior temporal cortex. The mean CMRO2 was significantly lower in the elder group (over 51 years old) than in the younger group (under 50 years old), whereas no significant difference in mean CBF between the two groups. The poor correlation of CBF to the age could be explained partly by the fact that CBF is easily influenced by the physiological, psychological and/or environmental factors. The age-related changes of CMRO2 were more marked in the association cortices of the left hemisphere than in that of the right hemisphere.
Collapse
Affiliation(s)
- H Takada
- Department of Neurology, Research Institute for Brain and Blood Vessels, Akita, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Vegter AC, Barletta M, Beck C, Borrero J, Burton H, Campbell ML, Costa MF, Eriksen M, Eriksson C, Estrades A, Gilardi KVK, Hardesty BD, Ivar do Sul JA, Lavers JL, Lazar B, Lebreton L, Nichols WJ, Ribic CA, Ryan PG, Schuyler QA, Smith SDA, Takada H, Townsend KA, Wabnitz CCC, Wilcox C, Young LC, Hamann M. Global research priorities to mitigate plastic pollution impacts on marine wildlife. ENDANGER SPECIES RES 2014. [DOI: 10.3354/esr00623] [Citation(s) in RCA: 224] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
25
|
Takada H, Kon S, Oyama Y, Kimura T, Nagahata F. G.P.134. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.164] [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: 11/15/2022]
|
26
|
Natsume J, Maeda N, Itomi K, Kidokoro H, Ishihara N, Takada H, Okumura A, Kubota T, Miura K, Aso K, Morikawa T, Kato K, Negoro T, Watanabe K. PET in infancy predicts long-term outcome during adolescence in cryptogenic West syndrome. AJNR Am J Neuroradiol 2014; 35:1580-5. [PMID: 24676006 DOI: 10.3174/ajnr.a3899] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Developmental and seizure outcomes in patients with cryptogenic West syndrome are variable. Our aim was to clarify the relationship between FDG-PET findings in infancy and long-term seizure and developmental outcome in cryptogenic West syndrome. MATERIALS AND METHODS From 1991 to 1999, we prospectively performed FDG-PET from the onset of cryptogenic West syndrome in 27 patients. PET was performed at onset and at 10 months of age. In 2012, we evaluated the educational status, psychomotor development, and seizure outcome in 23 of the 27 patients (13-22 years of age). The correlation between PET findings and outcome was evaluated. RESULTS At onset, PET showed hypometabolism in 13 patients (57%). The second PET after the initial treatment revealed cortical hypometabolism in 7 patients (30%). While hypometabolism at onset disappeared on the second PET in 9 patients, it was newly revealed in 3 patients on the second PET. In 2012, seven patients had persistent or recurrent seizures. Eight patients had intellectual impairment. The first PET did not correlate with seizure or developmental outcome. Five of 7 patients (71%) with hypometabolism seen on the second PET had persistent or recurrent seizures, while 14 of 16 (88%) patients with normal findings on the second PET were free of seizures. Five of 7 patients (71%) showing hypometabolism on the second PET had intellectual impairment. Thirteen of 16 (81%) patients with normal findings on the second PET showed normal intelligence. A significant correlation was found between the second PET and long-term seizure (P = .01) or developmental outcome (P = .03). CONCLUSIONS Cortical hypometabolism is not permanent; it changes with clinical symptoms. Hypometabolism after initial treatment predicts long-term seizures and poor developmental outcome.
Collapse
Affiliation(s)
- J Natsume
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Maeda
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Itomi
- Department of Neurology (K.I.), Aichi Children's Health and Medical Center, Obu, Japan
| | - H Kidokoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Ishihara
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - H Takada
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - A Okumura
- Department of Pediatrics (A.O.), Juntendo University Faculty of Medicine, Tokyo, Japan
| | - T Kubota
- Department of Pediatrics (T.K.), Anjo Kosei Hospital, Anjo, Japan
| | - K Miura
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Aso
- Department of Pediatrics (K.A.), Aichi Prefecture Medical Welfare Center of Aoitori, Nagoya, Japan
| | | | - K Kato
- Radiological and Medical Laboratory Sciences (K.K.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Negoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Watanabe
- Faculty of Health and Medical Sciences (K.W.), Aichi Shukutoku University, Nagakute, Japan
| |
Collapse
|
27
|
Yamamura K, Takada H, Uike K, Nakashima Y, Hirata Y, Nagata H, Takimoto T, Ishimura M, Morihana E, Ohga S, Hara T. Early progression of atherosclerosis in children with chronic infantile neurological cutaneous and articular syndrome. Rheumatology (Oxford) 2014; 53:1783-7. [DOI: 10.1093/rheumatology/keu180] [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: 11/12/2022] Open
|
28
|
Takada H, Goto T, Kon S, Oyama Y. P.18.8 Day profile of plasma glucose in diabetic-complicated myotonic dystrophy type 1. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.677] [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]
|
29
|
Uzu K, Adachi K, Suehiro H, Takada H, Matsuura T, Kamemura K, Hirayama Y, Matsuura A, Kawata M, Sakamoto S. Impact of the left ventricular lead position for long-term prognosis after cardiac resynchronization therapy in heart failure patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
30
|
Tanaka K, Takada H, Isonishi S, Aoki D, Mikami M, Kiguchi K, Iwamori M. Possible involvement of glycolipids in anticancer drug resistance of human ovarian serous carcinoma-derived cells. J Biochem 2012; 152:587-94. [DOI: 10.1093/jb/mvs112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
|
31
|
Takada H, Washino K, Hanai T, Iwata H. Response of parathyroid hormone to exercise and bone mineral density in adolescent female athletes. Environ Health Prev Med 2012; 2:161-6. [PMID: 21432535 DOI: 10.1007/bf02931695] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/1997] [Accepted: 11/04/1997] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND This study investigates 1) the effects of amount of exercise on levels of serum parathyroid hormone (PTH) and calcium, and 2) the relationship between PTH response and bone mineral density in adolescent female athletes. SUBJECTS Twenty-one female athletes on a top-ranked high school basketball team in Japan participated in a one-month intensive basketball program. Subjects were divided into moderate-exercise and strenuous-exercise groups. METHODS The amount of exercise was quantified using estimated metabolic equivalent (METs) and exercise hours. Levels of serum intact-PTH and calcium were examined five times: twice before training to establish a baseline (T(-1) and T(0)), once 3rd week of the training period (T(1), once immediately at the end of the program (T(2)), and again one week later(3)). Bone mineral density of forearm (distal-BMD) was measured one week after the end of the program. PTH levels at T(1), T(2) and(3) were regressed on PTH at baseline (T(0)) for both groups and examined for statistical significance. Multiple regression analyses of the changes of PTH and distal-BMD were conducted. RESULTS 1) Strenuous-exercise subjects showed both increased and decreased PTH levels, while moderate-exercise subjects showed a uniform decrease in PTH throughout the exercise period. 2) Increased PTH was an independent negative predictor of distal-BMD, while high lean body mass, increased serum Ca, and exercise volume were positive predictors. CONCLUSION The amount of exercise affects PTH response: moderate exercise suppresses PTH secretion, while strenuous exercise is apt to induce continuous secretion, which has a negative effect on BMD.
Collapse
Affiliation(s)
- H Takada
- Department of Hygiene, Gifu University School of Medicine, 40, Tsukasa machi, Gifu city, Japan
| | | | | | | |
Collapse
|
32
|
Takada H, Goto T, Kon S, Oyama Y, Kobayashi M. G.P.104 Liver insulin resistance and insulin secretion abnormality in myotonic dystrophy type 1. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
33
|
Tatsugami F, Matsuki M, Nakai G, Inada Y, Kanazawa S, Takeda Y, Morita H, Takada H, Yoshikawa S, Fukumura K, Narumi Y. The effect of adaptive iterative dose reduction on image quality in 320-detector row CT coronary angiography. Br J Radiol 2012; 85:e378-82. [PMID: 22253355 DOI: 10.1259/bjr/10084599] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the effect of adaptive iterative dose reduction (AIDR) on image noise and image quality as compared with standard filtered back projection (FBP) in 320-detector row CT coronary angiography (CTCA). METHODS 50 patients (14 females, mean age 68 ± 9 years) who underwent CTCA (100 kV or 120 kV, 400-580 mA) within a single heartbeat were enrolled. Studies were reconstructed with FBP and subsequently AIDR. Image noise, vessel contrast and contrast-to-noise ratio (CNR) in the coronary arteries were evaluated. Overall image quality for coronary arteries was assessed using a five-point scale (1, non-diagnostic; 5, excellent). RESULTS All the examinations were performed in a single heartbeat. Image noise in the aorta was significantly lower in data sets reconstructed with AIDR than in those reconstructed with FBP (21.4 ± 3.1 HU vs 36.9 ± 4.5 HU; p<0.001). No significant differences were observed between FBP and AIDR for the mean vessel contrast (HU) in the proximal coronary arteries. Consequently, CNRs in the proximal coronary arteries were higher in the AIDR group than in the FBP group (p<0.001). The mean image quality score was improved by AIDR (3.75 ± 0.38 vs 4.24 ± 0.38; p<0.001). CONCLUSION The use of AIDR reduces image noise and improves image quality in 320-detector row CTCA.
Collapse
Affiliation(s)
- F Tatsugami
- Department of Radiology, Osaka Medical College, Takatsuki City, Osaka, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Takada H, Shimizu Y, Matsuura Y, Shiomi T, Miyao M. Non-linear analysis of stabilograms with alcoholic intake. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2012:4208-4211. [PMID: 23366856 DOI: 10.1109/embc.2012.6346895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Equilibrium function in the cerebellum (vestibulo-cerebellar system) can deteriorate under the influence of alcohol. In the Romberg posture, the center of gravity, which was measured every 50 ms by stabilometry, appeared to shift with alcohol ingestion. In the previous study, a locus in the center of gravity (stabilogram) was converted to values of statistical indices such as area of sway, total locus length, and locus length per unit area, although these indices could not always distinguish between the statokinesigrams sampled from seven healthy young males in sober and intoxicated states. This measurement was made with an AMTI force plate. In this study, "translation error" was estimated in a d-dimensional embedding space in order to compare statokinesigrams recorded before and after the ingestion of doubly diluted brandy in 30 s (1 ≤ d ≤ 10). We succeeded in validating a stochastic differential equation as a mathematical model of the body sway. The randomness in the model was preserved after alcohol intake and significantly increased in the medial/lateral direction. Visual information referred by the postural control system when standing might be interfered by the effects of intoxication, which was regarded as disturbance. This method is considered to be useful to diagnose the disorders of the vestibulocerebellar system.
Collapse
Affiliation(s)
- H Takada
- Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo Fukui-City, Fukui, 910-8507 Japan.
| | | | | | | | | |
Collapse
|
35
|
Ohmure H, Takada H, Nagayama K, Sakiyama T, Tsubouchi H, Miyawaki S. Mastication Suppresses Initial Gastric Emptying by Modulating Gastric Activity. J Dent Res 2011; 91:293-8. [DOI: 10.1177/0022034511433847] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Because various mastication-related factors influence gastric activity, the functional relationship between mastication and gastric function has not been fully elucidated. To investigate the influence of mastication on gastric emptying and motility, we conducted a randomized trial to compare the effects of mastication on gastric emptying and gastric myoelectrical activity under conditions that excluded the influences of food comminution, taste, and olfaction. A 13C-acetate breath test with electrogastrography and electrocardiography was performed in 14 healthy men who ingested a test meal with or without chewing gum. Autonomic nerve activity was evaluated by fluctuation analysis of heart rate. Gastric emptying was significantly delayed in the ‘ingestion with mastication’ group. Gastric myoelectrical activity was significantly suppressed during mastication and increased gradually in the post-mastication phase. A decrease in the high-frequency power of heart rate variability was observed coincidentally with gastric myoelectrical activity suppression. These findings suggest that initial gastric emptying is suppressed by mastication, and that the suppression is caused by mastication-induced inhibition of gastric activity (UMIN Clinical Trial Registration no. UMIN000005351).
Collapse
Affiliation(s)
- H. Ohmure
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - H. Takada
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - K. Nagayama
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - T. Sakiyama
- Kagoshima University Medical and Dental Hospital, Division of Endoscopy, Kagoshima, Japan
| | - H. Tsubouchi
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Digestive Disease and Lifestyle related Disease, Kagoshima, Japan
| | - S. Miyawaki
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| |
Collapse
|
36
|
|
37
|
Yamamura K, Ohga S, Nishiyama K, Doi T, Tsutsumi Y, Ikeda K, Fujishima A, Takada H, Hara T. Recurrent atrial fibrillation after high-dose methylprednisolone therapy in a girl with lupus-associated hemophagocytic syndrome. Lupus 2011; 20:871-5. [DOI: 10.1177/0961203310392429] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hemophagocytic syndrome (HPS) is a serious complication of systemic lupus erythematosus (SLE). A 15-year-old female with lupus-nephritis developed HPS. Bone marrow study showed florid thrombophagocytosis. There was no associated infection. High-dose methylprednisolone therapy ameliorated HPS. However, atrial fibrillation (Af) repeated after the infusion and required direct-current cardioversion. No underlying diseases were found in the heart and endocrine system. Chest roentgenogram and echocardiography were normal. Electrocardiogram showed slightly prolonged PR interval in sinus rhythm. Af occurred at high circulating levels of interferon-γ and interleukin (IL)-10, but not IL-6, IL-2, tumor necrosis factor-α, C-reactive protein or catecholamines. This is the first observation that high-dose corticosteroid induced Af in a case of lupus-HPS. Af is unusual in SLE children without cardiac disease, while conduction defect occurs associated with lupus-myocarditis. Lupus-HPS may be an aggressive SLE subset with cardiac involvement. High-dose corticosteroid infusion controls lupus activity, but could disclose the cardiac stress in lupus-HPS patients.
Collapse
Affiliation(s)
- K Yamamura
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Nishiyama
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Doi
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Tsutsumi
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Ikeda
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - A Fujishima
- Division of Clinical Laboratories, Kyushu University Hospital, Fukuoka, Japan
| | - H Takada
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Hara
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| |
Collapse
|
38
|
Abstract
Behçet's disease is a chronic, relapsing, multisystem inflammatory disease of unknown etiology. Nuclear factor κB (NF-κB) essential modulator (NEMO) that is required for the activation of NF-κB plays an important role in inflammation. To investigate the role of NEMO in the pathogenesis of Behçet's disease, we analyzed NEMO gene and its expression pattern in tissues in a family with Behçet's disease. We found a heterozygous mutation (1217A> T, D406V) in a 6-year-old girl and her mother. Skewed X-chromosome inactivation was not observed in the peripheral blood mononuclear cells as well as in oral and intestinal mucosa of the patients. Accordingly, there was a significant proportion of peripheral blood monocytes that did not produce sufficient intracellular tumor necrosis factor-α with the stimulation of lipopolysaccharide. Heterozygous NEMO mutation is a cause of familial occurrence of Behçet's disease in female patients.
Collapse
Affiliation(s)
- H Takada
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | | | | | | | | | | |
Collapse
|
39
|
Karapanagioti HK, Endo S, Ogata Y, Takada H. Diffuse pollution by persistent organic pollutants as measured in plastic pellets sampled from various beaches in Greece. Mar Pollut Bull 2011; 62:312-317. [PMID: 21092999 DOI: 10.1016/j.marpolbul.2010.10.009] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2010] [Revised: 10/13/2010] [Accepted: 10/15/2010] [Indexed: 05/27/2023]
Abstract
Plastic pellets found stranded on beaches are hydrophobic organic materials and thus, they are a favourable medium for persistent organic pollutants to absorb to. In the present study, plastic pellets are used to determine the diffuse pollution of selected Greek beaches. Samples of pellets were taken from these beaches and were analyzed for PCBs, DDTs, HCHs, and PAHs. The observed differences among pellets from various sampling sites are related to the pollution occurring at each site. Plastic pellets collected in Saronikos Gulf beaches demonstrate much higher pollutant loading than the ones collected in a remote island or close to an agricultural area. Based on data collected in this study and the International Pellet Watch program, pollution in Saronikos Gulf, Greece, is comparable to other heavily industrialized places of the world. The present study demonstrates the potential of pellet watch to be utilized as a detailed-scale monitoring tool within a single country.
Collapse
|
40
|
Marcus N, Takada H, Dalal J, Regueiro J, Friedrich W, Roifman C. Stem Cell Transplantation for CD3-Delta Deficiency. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.096] [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]
|
41
|
Takada H, Kon S, Oyama Y, Gotoh T. P2.30 Oral fat loading study – does specific hyperlipemia exist in myotonic dystrophy type 1? Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.102] [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: 11/26/2022]
|
42
|
Ikeda K, Yamaguchi K, Tanaka T, Mizuno Y, Hijikata A, Ohara O, Takada H, Kusuhara K, Hara T. Unique activation status of peripheral blood mononuclear cells at acute phase of Kawasaki disease. Clin Exp Immunol 2009; 160:246-55. [PMID: 20015095 DOI: 10.1111/j.1365-2249.2009.04073.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Although Kawasaki disease (KD) is characterized by a marked activation of the immune system with elevations of serum proinflammatory cytokines and chemokines at acute phase, the major sources for these chemical mediators remain controversial. We analysed the activation status of peripheral blood mononuclear cells (PBMCs) by flow cytometry, DNA microarray and quantitative reverse transcription-polymerase chain reaction. The proportions of CD69+ cells in both natural killer cells and gammadeltaT cells at acute-phase KD were significantly higher than those at convalescent-phase KD. Microarray analysis revealed that five genes such as NAIP, IPAF, S100A9, FCGR1A and GCA up-regulated in acute-phase KD and the pathways involved in acute phase KD were related closely to the innate immune system. The relative expression levels of damage-associated molecular pattern molecule (DAMP) (S100A9 and S100A12) genes in PBMCs at acute-phase KD were significantly higher than those at convalescent-phase KD, while those of TNFA, IL1B and IL6 genes were not significantly different between KD patients and healthy controls. Intracellular production of tumour necrosis factor-alpha, interleukin-10 and interferon-gamma in PBMCs was not observed in KD patients. The present data have indicated that PBMCs showed a unique activation status with high expression of DAMP genes but low expression of proinflammatory cytokine genes, and that the innate immune system appears to play a role in the pathogenesis and pathophysiology of KD.
Collapse
Affiliation(s)
- K Ikeda
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Hasan AK, Takada H, Esaki N, Soda K. Catalytic action of L-2-halo acid dehalogenase on long-chain L-2-haloalkanoic acids in organic solvents. Biotechnol Bioeng 2009; 38:1114-7. [PMID: 18600877 DOI: 10.1002/bit.260380921] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A Lyophilized preparation of L-2-halo acid dehalogenase was not only stable but also catalytically active in anhydrous dimethyl sulfoxide, toluene, and other organic solvents. 2-Halo acids with long alkyl (C(5)-C(16)) or aromatic (phenyl and benzyl) side chains were inert in water but dehalogenated effectively in anhydrous dimethyl sulfoxide by the lyophilized enzyme. Long chain 2-haloalkanoic acids such as 2-bromohexadecanoic acids were better as substrate than short-chain halo acids (e.g., 2-chloropropanoic acid). The dehalogenation proceed with inversion of C(2) configuration to produce the corresponding (2R)-2-hydroxy acids in anhydrous dimethyl sulfoxide in the same way as found in water.
Collapse
Affiliation(s)
- A K Hasan
- Laboratory of Microbial Biochemistry, Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611, Japan
| | | | | | | |
Collapse
|
44
|
Takada H, Kon S, Oyama Y, Gotoh T. FP45-TH-02 Hypothesis for the stages of glucose intolerance in myotonic dystrophy: evaluation by glucose tolerance test. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)70507-6] [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: 10/20/2022]
|
45
|
Takada H, Kon S, Oyama Y. WITHDRAWN: P.P.2 04 Chronological observation of glucose intolerance in myotonic dystrophy. Neuromuscul Disord 2009:S0960-8966(06)00256-2. [PMID: 19324549 DOI: 10.1016/j.nmd.2006.05.098] [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: 10/24/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
Collapse
Affiliation(s)
- H Takada
- National Hospital Organization, Neurology, Aomori Hospital, Aomori, Japan
| | | | | |
Collapse
|
46
|
Sawaki M, Sato S, Kagawa C, Yamada T, Takada H, Kikumori T, Oda K, Ishihara S, Ito Y, Imai T. 0118 A preliminary report of a phase I study of intraoperative radiotherapy (IORT) for early breast cancer in Japan. Breast 2009. [DOI: 10.1016/s0960-9776(09)70159-6] [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: 10/20/2022] Open
|
47
|
Tsubura A, Yuri T, Yoshizawa K, Uehara N, Takada H. Role of fatty acids in malignancy and visual impairment: epidemiological evidence and experimental studies. Histol Histopathol 2009; 24:223-34. [PMID: 19085838 DOI: 10.14670/hh-24.223] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
International variation in breast and colon cancer incidence is positively related to total fat intake. However, total fat consists of different fatty acid families, e.g., saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs), and n-3 and n-6 polyunsaturated fatty acids (PUFAs). Epidemiological evidence and experimental studies suggest that these fatty acid families have different effects on breast and colon carcinogenesis. Therefore the action of each fatty acid on carcinogenesis should be evaluated separately. Although it is difficult to establish firm conclusions on the effect of each fatty acid in human epidemiological studies, experimental studies on animals and cultured cells suggest that n-6 PUFAs (linoleic acid and arachidonic acid) may have a tumor promoting effect, while n-3 PUFAs (eicosapentaenoic acid, docosahexaenoic acid and alpha-linolenic acid) and conjugated fatty acids (CFAs; a mixture of positional and geometric isomers of PUFAs with conjugated double bonds) exert an inhibitory effect on tumor growth. SFAs such as palmitic acid and stearic acid show little or no tumor promoting effect, and the action of oleic acid, a MUFA, is inconclusive. In addition to regulation of abnormal cell growth seen in cancers, fatty acids also control cell loss seen in degenerative eye diseases, such as degeneration of lens material in cataract and degeneration of photoreceptor cells in retinitis pigmentosa. Experiments suggest that n-6 PUFAs cause deleterious effects, while n-3 PUFAs result in beneficial effects on the lens and retina. In particular, docosahexaenoic acid is known to be effective in rescuing photoreceptor cells from damage. Thus, understanding the function of each fatty acid is likely to be important for making progress in treating these and other diseases.
Collapse
Affiliation(s)
- A Tsubura
- Department of Pathology II, Kansai Medical University, Takii Hospital, Moriguchi, Osaka, Japan.
| | | | | | | | | |
Collapse
|
48
|
Nagashima J, Musha H, Takada H, Awaya T, Oba H, Mori N, Ohmiya K, Nobuoka S, Murayama M. Influence of angiotensin-converting enzyme gene polymorphism on development of athlete's heart. Clin Cardiol 2009; 23:621-4. [PMID: 10941550 PMCID: PMC6655082 DOI: 10.1002/clc.4960230814] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND HYPOTHESIS Genetic influence on development of athlete's heart is uncertain. This study investigated whether angiotensin-converting enzyme (ACE) gene polymorphism influenced development of athlete's heart. METHODS Forty-three participants in a 100-km ultramarathon were classified on the basis of ACE gene polymorphism into a deletion group (n = 26) and an insertion group (n = 17). Echocardiograms were recorded to determine left ventricular end-diastolic and end-systolic diameters, interventricular septal thickness, left ventricular posterior wall thickness, left ventricular mass, and ejection fraction. RESULTS Left ventricular end-diastolic diameter (65.5 +/- 4.0 mm) and left ventricular mass (369.5 +/- 73.9 g) were significantly larger in the subjects with deletion than in those with insertion (57.4 +/- 4.2 mm, 306.5 +/- 93.7 g). However, no significant differences in the other parameters were noted. CONCLUSIONS In long-distance runners, ACE gene polymorphism of the D/D and D/I genotypes has a stronger influence on left ventricular hypertrophy than polymorphism of the I/I genotype.
Collapse
Affiliation(s)
- J Nagashima
- Department of Cardiology, St. Marianna University School of Medicine, Kawasaki, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Nagamine T, Takada H, Kusakabe T, Nakazato K, Sakai T, Oikawa M, Kamiya T, Arakawa K, Iha M. Intracellular changes of metal elements by fucoidan extracted from brown seaweed (Cladosiphon okamuranus). Biol Trace Elem Res 2008; 124:60-9. [PMID: 18473126 DOI: 10.1007/s12011-008-8123-x] [Citation(s) in RCA: 3] [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] [Received: 11/28/2007] [Accepted: 03/14/2008] [Indexed: 10/22/2022]
Abstract
This study was undertaken to elucidate the intracellular changes of metal elements after the administration of fucoidan extracted from Cladosiphon okamuranus. TRL1215 cells (normal rat liver cell line) were treated with 0, 0.1, or 1.0 mg/ml fucoidan and incubated in 5% CO2 at 37 degrees C. The cellular levels of Mg, Al, Fe, and Zn were significantly increased in the 1.0 mg/ml fucoidan-treated cells compared to those of the 0.1 mg/ml fucoidan-treated cells and the control. Next, TRL1215 cells were cultured on Mylar film overnight. At 24 h after 5-bromo-2'-deoxyuridine dosing, 0, 0.1, or 1.0 mg/ml fucoidan was treated for 9 h. The cellular distribution of elements was analyzed using in-air micro-micro-particle induced X-ray emission. The X-ray spectra showed that yields of Al, Mg, and Zn were high in order of the 1.0 mg/ml fucoidan-treated sample, the 0.1 mg/ml fucoidan-treated sample, and the control. Fe yield was mildly increased by fucoidan administration. In fucoidan-treated cells, the focal accumulation of Br was correlated spatially with phosphorous-rich region, suggesting that Br was localized within the nucleus. Al distribution provided a spatial association with Br map. These data suggest that fucoidan increases the accumulations of Al, Mg, Fe, and Zn in normal rat hepatocytes, and fucoidan-binding Al is postulated to be transferred into the nucleus.
Collapse
Affiliation(s)
- T Nagamine
- School of Health Science, Gunma University Faculty of Medicine, Maebashi, 371-8514, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Abstract
Oral epithelium is the first barrier against oral bacteria in periodontal tissue. Oral epithelial cells constitutively express Toll-like receptors (TLRs) and NOD1/2, functional receptors which induce the production of antibacterial factors such as peptidoglycan recognition proteins (PGRPs) and β-defensin 2, but not pro-inflammatory cytokines such as interleukin (IL)-8. In this study, we hypothesized that innate immune responses in the oral epithelium are enhanced in inflamed tissue. We found that NOD1 and NOD2 agonists, in combination with TLR agonists, synergistically induced production of PGRPs and of β-defensin 2 in human oral epithelial cells via NF-κB. In contrast, co-stimulation with NOD1/2 and TLR ligands had no effect on the production of pro-inflammatory cytokines (IL-6, IL-8, and monocyte chemoattractant protein-1). These findings indicate that, in innate immune responses to invading microbes, a combination of signaling through TLRs and NODs leads to the synergistic activation of antibacterial responses in the oral epithelium.
Collapse
Affiliation(s)
- A. Uehara
- Department of Microbiology and Immunology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - H. Takada
- Department of Microbiology and Immunology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| |
Collapse
|