1
|
Aihara M, Irie T, Yasukawa K, Minoura I, Miyauchi N, Nishi M, Katayama N, Yachiku K, Jinnouchi H, Kadowaki T, Yamauchi T, Yatomi Y, Kubota N, Sekimizu K. Development of a high-performance liquid chromatographic glycated albumin assay using finger-prick blood samples. Clin Chim Acta 2023; 542:117272. [PMID: 36858193 DOI: 10.1016/j.cca.2023.117272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023]
Abstract
BACKGROUND Home blood glucose monitoring can be effective for the self-management of diabetic patients. Hemoglobin A1c (HbA1c) is a widely used marker that reflects the average blood glucose within 1-2 months but does not sensitively respond to behavioral changes. Self-monitoring of blood glucose, continuous glucose monitoring, and flush glucose monitoring are sensitive; however, the cost and invasiveness of these tests prevent their widespread use. We focused on glycated albumin (GA), which reflects the average blood glucose levels over 1-2 weeks, and established a GA measurement method for self-sampling, finger-prick blood, which may be submitted for testing through postal service to receive weekly results. METHODS A high-performance liquid chromatography assay was established to measure GA levels in finger-prick blood samples from 103 diabetic patients and the results were compared with venous blood measurements using an enzymatic method. Furthermore, conditions for sending blood samples by mail were evaluated. Under these conditions, samples from 27 healthy and 32 patient volunteers sent through postal service were compared with samples stored in the laboratory. RESULTS GA levels were measured in samples containing > 20 μg albumin, which resulted in a CV less than 0.3%. The correlation between the GA levels of finger-prick blood measured using HPLC and the GA levels of venous blood measured using the enzymatic method was R2 = 0.988 with the slope ∼ 1.0, suggesting that the two were nearly equivalent. GA levels were stable for four days at 30 °C and two days at 37 °C. Mail-delivered samples exhibited a high correlation with samples that were not sent (R2 > 0.99). CONCLUSIONS We established a method to measure GA levels in self-sampled, finger-prick blood sent through postal service in Japan. The method is applicable for weekly feedback of GA levels, which is potentially useful for motivating behavioral changes. In addition to markers such as HbA1c and blood glucose, GA can be used as a marker for assessing dietary and physical activities. This study highlighted the importance of GA monitoring by developing a suitable measurement method for weekly monitoring of GA levels.
Collapse
Affiliation(s)
- Masakazu Aihara
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoko Irie
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Itsushi Minoura
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Noriko Miyauchi
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mitsumi Nishi
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Norikazu Katayama
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kenji Yachiku
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hideaki Jinnouchi
- Jinnouchi Hospital, Kuhonji 6-2-3, Chuo-ku, Kumamoto 862-0976, Japan
| | - Takashi Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan; Toranomon Hospital, Toranomon 2-2-2, Minato-ku, Tokyo 105-8470, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Naoto Kubota
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.
| | - Koshin Sekimizu
- Provigate Inc., University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| |
Collapse
|
2
|
Kusumoto Y, Sato M, Ikeda H, Yasukawa K, Tang X, Yatomi Y. Redox state as assessed using the measurement of human non-mercaptalbumin in embryo culture media is associated with successful embryo development in human in vitro fertilization. J Clin Biochem Nutr 2022; 71:69-72. [PMID: 35903606 PMCID: PMC9309080 DOI: 10.3164/jcbn.21-114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/03/2021] [Indexed: 11/22/2022] Open
Abstract
The role of oxidative stress in the pathogenesis of various diseases has been attracting attention. We speculated as to whether the redox state of treatment solutions used for various diseases may play a role in treatment success. In the current study, we focused on the human embryo culture medium used for in vitro fertilization (IVF). A total of 173 oocytes from a total of 91 patients treated with IVF were enrolled. The redox state was assessed by measuring the levels of human non-mercaptalbumin (HNA). We analyzed factors related to blastocyst formation on day 5 or 6 after insemination. We also developed a random forest (RF) model for the prediction of blastocyst formation. The variable importance in the predictive model was assessed using the mean decrease in the Gini impurity. Blastocyst formation was observed in 41.04% (71/173) of the oocytes and was associated with a lower %HNA in the culture medium, a younger patient age, and the fertilization method (standard IVF or intracytoplasmic sperm injection). The RF model developed using these factors and 70% of the samples (training set, n = 121) was validated in the remaining testing set (n = 52) and produced an area under the curve of 0.761, where the %HNA in the culture medium was the most important variable for predicting blastocyst formation. In conclusion, lower levels of oxidative stress in embryo culture media were associated with the success of IVF treatment. The redox state of treatment solutions should be considered to support treatment success.
Collapse
Affiliation(s)
- Yoshika Kusumoto
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo
| | - Masaya Sato
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo
| | - Hitoshi Ikeda
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo
| | - Keiko Yasukawa
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo
| | | | - Yutaka Yatomi
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo
| |
Collapse
|
3
|
Notake T, Shimizu A, Kubota K, Ikehara T, Hayashi H, Yasukawa K, Kobayashi A, Yamada A, Fujinaga Y, Soejima Y. Hepatocellular uptake index obtained with gadoxetate disodium-enhanced magnetic resonance imaging in the assessment future liver remnant function after major hepatectomy for biliary malignancy. BJS Open 2021; 5:6319789. [PMID: 34254117 PMCID: PMC8275880 DOI: 10.1093/bjsopen/zraa048] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 11/06/2020] [Indexed: 12/19/2022] Open
Abstract
Background Functional assessment of the future liver remnant (FLR) after major hepatectomy is essential but often difficult in patients with biliary malignancy, owing to obstructive jaundice and portal vein embolization. This study evaluated whether a novel index using gadoxetate disodium-enhanced MRI (EOB-MRI) could predict posthepatectomy liver failure (PHLF) after major hepatectomy for biliary malignancy. Methods The remnant hepatocellular uptake index (rHUI) was calculated in patients undergoing EOB-MRI before major hepatectomy for biliary malignancy. Receiver operating characteristic (ROC) curve analyses were used to evaluate the accuracy of rHUI for predicting PHLF grade B or C, according to International Study Group of Liver Surgery criteria. Multivariable logistic regression analyses comprised stepwise selection of parameters, including rHUI and other conventional indices. Results This study included 67 patients. The rHUI accurately predicted PHLF (area under the curve (AUC) 0.896). A cut-off value for rHUI of less than 0.410 predicted all patients who developed grade B or C PHLF. In multivariable analysis, only rHUI was an independent risk factor for grade B or C PHLF (odds ratio 2.0 × 103, 95 per cent c.i. 19.6 to 3.8 × 107; P < 0.001). In patients who underwent preoperative portal vein embolization, rHUI accurately predicted PHLF (AUC 0.885), whereas other conventional indices, such as the plasma disappearance rate of indocyanine green of the FLR and FLR volume, did not. Conclusion The rHUI is potentially a useful predictor of PHLF after major hepatectomy for biliary malignancy.
Collapse
Affiliation(s)
- T Notake
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - A Shimizu
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Kubota
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - T Ikehara
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - H Hayashi
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - K Yasukawa
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - A Kobayashi
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - A Yamada
- Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Fujinaga
- Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Soejima
- Division of Gastroenterological, Hepato-Biliary-Pancreatic, Transplantation and Paediatric Surgery, Department of Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| |
Collapse
|
4
|
Kobayashi Y, Suzuki R, Yasukawa K, Oba K, Yamauchi T, Yatomi Y, Kadowaki T. Oxidized albumin in blood reflects the severity of multiple vascular complications in diabetes mellitus. Metabol Open 2020; 6:100032. [PMID: 32812907 PMCID: PMC7424782 DOI: 10.1016/j.metop.2020.100032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 02/06/2023] Open
Abstract
Albumin has an oxidized form, known as non-mercaptalbumin (HNA), which reflects systemic oxidative stress. The association between serum HNA levels and diabetic complications are yet to be reported. In this cross-sectional study, we investigated 164 diabetic subjects to assess the correlation between HNA% (the proportion in the total albumin) and various clinical parameters. HNA% was significantly associated with the severity of multiple complications including neuropathy (23.3 ± 4.1% vs 26.2 ± 5.1%) and nephropathy (24.1 ± 3.9%, 24.6 ± 4.2%, 28.5 ± 6.1%, 31.3 ± 5.7%, 37.8 ± 2.9%, stage 1/2/3/4/5, respectively). These findings highlight the universal importance of oxidative stress, indicating HNA% potential as a versatile marker of the severity of diabetic complications.
Collapse
Affiliation(s)
- Yuka Kobayashi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ryo Suzuki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Diabetes, Metabolism and Endocrinololy, Tokyo Medical University, Tokyo, Japan
| | - Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Koji Oba
- Graduate School of Interdisciplinary Information Studies, Department of Biostatistics, School of Public Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Takashi Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Prevention of Diabetes and Lifestyle-Related Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
5
|
Ueno SI, Hatano T, Okuzumi A, Saiki S, Oji Y, Mori A, Koinuma T, Fujimaki M, Takeshige-Amano H, Kondo A, Yoshikawa N, Nojiri T, Kurano M, Yasukawa K, Yatomi Y, Ikeda H, Hattori N. Nonmercaptalbumin as an oxidative stress marker in Parkinson's and PARK2 disease. Ann Clin Transl Neurol 2020; 7:307-317. [PMID: 32059082 PMCID: PMC7086006 DOI: 10.1002/acn3.50990] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 12/20/2022] Open
Abstract
Objective To investigate the oxidized albumin ratio, which is the redox ratio of human nonmercaptalbumin (HNA) to serum albumin (%HNA), as a biomarker in idiopathic Parkinson’s disease (iPD) and related neurodegenerative disorders. Methods This prospective study enrolled 216 iPD patients, 15 patients with autosomal recessive familial PD due to parkin mutations (PARK2), 30 multiple system atrophy (MSA) patients, 32 progressive nuclear palsy (PSP) patients, and 143 healthy controls. HNA was analyzed using modified high‐performance liquid chromatography and was evaluated alongside other parameters. Results iPD and PARK2 patients had a higher %HNA than controls (iPD vs. controls: odds ratio (OR) 1.325, P < 0.001; PARK2 vs. controls: OR 1.712, P < 0.001). Even iPD patients at an early Hoehn & Yahr stage (I and II) showed a higher %HNA than controls. iPD patients had a higher %HNA than MSA and PSP patients (iPD vs. MSA: OR 1.249, P < 0.001, iPD vs. PSP: OR 1.288, P < 0.05). When discriminating iPD patients from controls, %HNA corrected by age achieved an AUC of 0.750; when discriminating iPD patients from MSA and PSP patients, an AUC of 0.747 was achieved. Furthermore, uric acid, an antioxidant compound, was decreased in iPD patients, similar to the change in %HNA. Interpretation %HNA was significantly increased in iPD and PARK2 patients compared with controls, regardless of disease course and severity. Oxidative stress might be increased from the early stages of iPD and PARK2 and play an important role in their pathomechanisms.
Collapse
Affiliation(s)
- Shin-Ichi Ueno
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Taku Hatano
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Ayami Okuzumi
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Shinji Saiki
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Yutaka Oji
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Akio Mori
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Takahiro Koinuma
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Motoki Fujimaki
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | | | - Akihide Kondo
- Department of Neurosurgery, Faculty of Medicine, Juntendo University, Tokyo, Japan
| | - Naoyuki Yoshikawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Takahiro Nojiri
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Makoto Kurano
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hitoshi Ikeda
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Neurology, Faculty of Medicine, Juntendo University, Tokyo, Japan
| |
Collapse
|
6
|
Fukuhara S, Yasukawa K, Sato M, Ikeda H, Inoguchi Y, Etoh T, Masakado M, Umeda F, Yatomi Y, Yamauchi T, Inoguchi T. Clinical usefulness of human serum nonmercaptalbumin to mercaptalbumin ratio as a biomarker for diabetic complications and disability in activities of daily living in elderly patients with diabetes. Metabolism 2020; 103:153995. [PMID: 31672444 DOI: 10.1016/j.metabol.2019.153995] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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] [Received: 08/14/2019] [Revised: 10/14/2019] [Accepted: 10/24/2019] [Indexed: 11/20/2022]
Abstract
BACKGROUND Oxidative stress may play an important role in the development of diabetic complications. The ratio of human nonmercaptalbumin (HNA; oxidized form) to human mercaptalbumin (HMA; reduced form) has attracted attention as an indicator for systemic redox states. In this study, we measured the ratio in elderly patients with diabetes and evaluated its association with diabetic complications and disability in activities of daily living (ADL disability). METHODS One hundred twenty-six elderly patients with diabetes, aged 70 years and older, under medical care at Yukuhashi Central Hospital from April 2018 to June 2018, were continuously recruited. HNA%, defined as HNA / (HNA + HMA) × 100, was measured by a high-performance liquid chromatography method. First, multivariate regression analysis was performed to evaluate which variables were significant determinants for HNA%. Next, to evaluate the association of HNA% with ADL disability, logistic regression analysis in various models was performed. Then we plotted the receiver operating characteristic (ROC) curve and calculated the under area the curve (AUC), sensitivity, and specificity in each model. RESULTS In elderly patients with diabetes, multiple regression analysis showed that serum bilirubin levels and albumin levels, both of which are major endogenous anti-oxidants, and chronic renal failure (or proliferative nephropathy) were significantly associated with HNA%, suggesting that HNA% may be a good biomarker for oxidative stress in those patients. We then evaluated the association of HNA% with ADL disability in various logistic regression models. Model using only HNA% showed that it was a significant determinant for ADL disability (OR 1.158, 95% CI 1.077-1.244, P < 0.001). Model using HNA% and age showed that both variables were significant determinants for ADL disability (OR 1.160, 95% CI 1.069-1.258, P < 0.001; OR 1.258, 95% CI 1.110-1.427, P < 0.001, respectively). ROC analysis showed that the AUC of HNA% alone was 0.765. The AUC of model using HNA% and age was further increased to 0.866. CONCLUSIONS HNA% was significantly associated with diabetic complications and ADL disability, thereby may be clinically useful as an oxidative stress marker in elderly patients with diabetes.
Collapse
Affiliation(s)
| | - Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Masaya Sato
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Hitoshi Ikeda
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | | | | | | | - Fumio Umeda
- Yukuhashi Central Hospital, Yukuhashi, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | | | - Toyoshi Inoguchi
- Fukuoka City Health Promotion Support Center, Fukuoka City Medical Association, Fukuoka, Japan.
| |
Collapse
|
7
|
Yasukawa K, Sato M, Nojiri T, Yoshikawa N, Morita K, Kai M, Oike Y, Yamazaki T, Ikeda H, Yatomi Y. Establishment of a stable sampling method to assay mercaptoalbumin/non-mercaptoalbumin and reference ranges. Pract Lab Med 2019; 17:e00132. [PMID: 31649984 PMCID: PMC6804495 DOI: 10.1016/j.plabm.2019.e00132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 07/05/2019] [Accepted: 08/28/2019] [Indexed: 12/28/2022] Open
Abstract
Oxidative stress is reportedly associated with many diseases such as cancer, arteriosclerosis, diabetes and aging, but no practical biomarkers are currently available in actual clinical practice. Human mercaptoalbumin (HMA) and human non-mercaptoalbumin (HNA) are expected to become markers of oxidative stress, but the stability of HMA/HNA has been problematic. We investigated the conditions for stabilizing HMA/HNA and found that HMA/HNA was stable at room temperature for 25 h if whole blood samples were mixed with a citrate buffer so that the citric acid concentration after mixing was 70 mM or higher and the pH of the added buffer was less than pH 6.0. Whole blood samples were then collected under the above conditions, and the reference range for HNA was set at 21.8% ± 7.4% (HMA, 78.2% ± 7.4%) based on samples from 65 volunteers (28 males and 37 females; average age, 55.0 ± 13.8 years). The clinical usefulness of HMA/HNA as an oxidative stress marker should be clarified for specific pathological conditions using the previously reported, highly accurate measurement method under the conditions required for HMA/HNA stability.
Collapse
Affiliation(s)
- Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Masaya Sato
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Takahiro Nojiri
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Naoyuki Yoshikawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Kazuharu Morita
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Miyoko Kai
- Department of Center for Epidemiology and Preventive, The University of Tokyo Hospital, Tokyo, Japan
| | - Yumiko Oike
- Department of Center for Epidemiology and Preventive, The University of Tokyo Hospital, Tokyo, Japan
| | - Tsutomu Yamazaki
- Department of Center for Epidemiology and Preventive, The University of Tokyo Hospital, Tokyo, Japan
| | - Hitoshi Ikeda
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| |
Collapse
|
8
|
Affiliation(s)
- Makoto Kurano
- Department of Clinical Laboratory, Medicine, The University of Tokyo, Tokyo, Japan
| | - Keiko Yasukawa
- Department of Clinical Laboratory, Medicine, The University of Tokyo, Tokyo, Japan
| | - Hitoshi Ikeda
- Department of Clinical Laboratory, Medicine, The University of Tokyo, Tokyo, Japan
| | - Junken Aoki
- Laboratory of Molecular and Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Miyagi, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
9
|
Masudo R, Yasukawa K, Nojiri T, Yoshikawa N, Shimosaka H, Sone S, Oike Y, Ugawa A, Yamazaki T, Shimokado K, Yatomi Y, Ikeda H. Evaluation of human nonmercaptalbumin as a marker for oxidative stress and its association with various parameters in blood. J Clin Biochem Nutr 2017; 61:79-84. [PMID: 28955123 PMCID: PMC5612822 DOI: 10.3164/jcbn.17-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 02/28/2017] [Indexed: 12/26/2022] Open
Abstract
Oxidative status of albumin was not a useful biomarker for oxidative stress in practical use due to time-consuming measuring method. We evaluated oxidized, human nonmercaptalbumin measured more quickly than ever by a novel method using anion-exchange HPLC. In 60 subjects taking a general health examination, mean serum human nonmercaptalbumin level was 25.1 ± 3.0% with no gender difference but positive correlation with age. There were no links between human nonmercaptalbumin and C-reactive protein, γ-glutamyltransferase or iron, reportedly associated with oxidative stress. Human nonmercaptalbumin correlated with systolic blood pressure, pulse pressure and body mass index among physical findings. Positive correlations were observed between human nonmercaptalbumin and AST, LDH, BUN, or creatinine, suggesting that oxidative stress may link with liver injury and renal function. Human nonmercaptalbumin correlated with uric acid in female but not in male, suggesting that higher uric acid levels may be associated with increased oxidative stress only in female. As another gender difference, white blood cell counts correlated with human nonmercaptalbumin in female, while the parameters for red blood cells correlated with human nonmercaptalbumin in male. In conclusion, serum human nonmercaptalbumin level in healthy subjects was approximately 25% as previously reported. Oxidative stress may be closely associated with hypertension, obesity, liver injury, renal function, and anemia.
Collapse
Affiliation(s)
- Rie Masudo
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.,Department of Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Keiko Yasukawa
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Takahiro Nojiri
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Naoyuki Yoshikawa
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Hironori Shimosaka
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Shinji Sone
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yumiko Oike
- Department of Center for Epidemiology & Preventive Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Akemi Ugawa
- Department of Center for Epidemiology & Preventive Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Tsutomu Yamazaki
- Department of Center for Epidemiology & Preventive Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kentaro Shimokado
- Department of Geriatrics and Vascular Medicine, Tokyo Medical and Dental University Graduate School, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Hitoshi Ikeda
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| |
Collapse
|
10
|
Martrette JM, Egloff C, Clément C, Yasukawa K, Thornton SN, Trabalon M. Effects of prolonged exposure to CO 2 on behaviour, hormone secretion and respiratory muscles in young female rats. Physiol Behav 2017; 177:257-262. [PMID: 28501558 DOI: 10.1016/j.physbeh.2017.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 12/01/2016] [Revised: 02/07/2017] [Accepted: 05/04/2017] [Indexed: 11/28/2022]
Abstract
Atmospheric CO2 concentrations increased significantly over the last century and continuing increases are expected to have significant effects on current ecosystems. This study evaluated the behavioural and physiological (hormone status, muscle structure) effects of prolonged CO2 exposure in young female Wistar rats exposed at 700ppm of CO2 during 6h a day for 15days. Prolonged CO2 exposure, though not continuous, produced significant disturbances in behaviour with an increase in drinking, grooming and resting, and a reduction in rearing, jumping-play and locomotor activity. Furthermore, CO2 exposure was accompanied by increased plasma levels of corticosterone, suggesting that prolonged exposure to CO2 was stressful. The muscular structure can also be modified also when respiratory working conditions change. The expression of myosin heavy chain was significantly affected in the diaphragm and oral respiratory muscles: Masseter Superficialis and Anterior Digastric. Modified behaviour and hormonal changes both appear to be at the origin of the observed muscular adaptation.
Collapse
Affiliation(s)
- J M Martrette
- EA 3450 DevAH, Université de Lorraine, 54505 Vandœuvre-lès-Nancy, France
| | - C Egloff
- UMR 7039 CNRS, Université de Lorraine, 54505 Vandœuvre-lès-Nancy, France.
| | - C Clément
- EA 3450 DevAH, Université de Lorraine, 54505 Vandœuvre-lès-Nancy, France
| | - K Yasukawa
- EA 3450 DevAH, Université de Lorraine, 54505 Vandœuvre-lès-Nancy, France
| | - S N Thornton
- INSERM U_1116, Université de Lorraine, 54505 Vandœuvre-lès-Nancy, France
| | - M Trabalon
- UMR 6552 CNRS, Université de Rennes 1, 35042 Rennes, France
| |
Collapse
|
11
|
Yasukawa K, Shimosawa T, Okubo S, Yatomi Y. A simple, rapid and validated high-performance liquid chromatography method suitable for clinical measurements of human mercaptalbumin and non-mercaptalbumin. Ann Clin Biochem 2017; 55:121-127. [PMID: 28114791 DOI: 10.1177/0004563217693257] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background Human mercaptalbumin and human non-mercaptalbumin have been reported as markers for various pathological conditions, such as kidney and liver diseases. These markers play important roles in redox regulations throughout the body. Despite the recognition of these markers in various pathophysiologic conditions, the measurements of human mercaptalbumin and non-mercaptalbumin have not been popular because of the technical complexity and long measurement time of conventional methods. Methods Based on previous reports, we explored the optimal analytical conditions for a high-performance liquid chromatography method using an anion-exchange column packed with a hydrophilic polyvinyl alcohol gel. The method was then validated using performance tests as well as measurements of various patients' serum samples. Results We successfully established a reliable high-performance liquid chromatography method with an analytical time of only 12 min per test. The repeatability (within-day variability) and reproducibility (day-to-day variability) were 0.30% and 0.27% (CV), respectively. A very good correlation was obtained with the results of the conventional method. Conclusions A practical method for the clinical measurement of human mercaptalbumin and non-mercaptalbumin was established. This high-performance liquid chromatography method is expected to be a powerful tool enabling the expansion of clinical usefulness and ensuring the elucidation of the roles of albumin in redox reactions throughout the human body.
Collapse
Affiliation(s)
- Keiko Yasukawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Shigeo Okubo
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| | - Yutaka Yatomi
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo, Japan
| |
Collapse
|
12
|
Takei I, Hoshino T, Tominaga M, Ishibashi M, Kuwa K, Umemoto M, Tani W, Okahashi M, Yasukawa K, Kohzuma T, Sato A. Committee on Diabetes Mellitus Indices of the Japan Society of Clinical Chemistry-recommended reference measurement procedure and reference materials for glycated albumin determination. Ann Clin Biochem 2015; 53:124-32. [DOI: 10.1177/0004563215599178] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2015] [Indexed: 01/22/2023]
Abstract
Background Glycated albumin is an intermediate glycaemic control marker for which there are several measurement procedures with entirely different reference intervals. We have developed a reference measurement procedure for the purpose of standardizing glycated albumin measurements. Methods The isotope dilution liquid chromatography/tandem mass spectrometry method was developed as a reference measurement procedure for glycated albumin. The stable isotopes of lysine and fructosyl-lysine, which serve as an internal standard, were added to albumin isolated from serum, followed by hydrogenation. After hydrolysis of albumin with hot hydrochloric acid, the liberated lysine and fructosyl-lysine were measured by liquid chromatography/tandem mass spectrometry, and their concentrations were determined from each isotope ratio. The reference materials (JCCRM611) for determining of glycated albumin were prepared from pooled patient blood samples. Results The isotope dilution–tandem mass spectrometry calibration curve of fructosyl-lysine and lysine showed good linearity (r = 0.999). The inter-assay and intra-assay coefficient of variation values of glycated albumin measurement were 1.2 and 1.4%, respectively. The glycated albumin values of serum in patients with diabetes assessed through the use of this method showed a good relationship with routine measurement procedures (r = 0.997). The relationship of glycated albumin values of the reference material (JCCRM611) between these two methods was the same as the relationship with the patient serum samples. Conclusion The Committee on Diabetes Mellitus Indices of the Japan Society of Clinical Chemistry recommends the isotope dilution liquid chromatography/tandem mass spectrometry method as a reference measurement procedure, and JCCRM611 as a certified reference material for glycated albumin measurement. In addition, we recommend the traceability system for glycated albumin measurement.
Collapse
Affiliation(s)
- Izumi Takei
- Division of Internal Medicine, Tokyo Dental College, Ichikawa General Hospital, Chiba, Japan
| | - Tadao Hoshino
- Institute of Biopathological Medicine, Kanagawa Japan
| | - Makoto Tominaga
- Division of Internal Medicine, Hananoie Hospital, Tochigi, Japan
| | - Midori Ishibashi
- Department of Laboratory Medicine, New Tokyo Hospital, Chiba Japan
| | - Katsuhiko Kuwa
- Bio-Medical Standards Section, Organic Analytical Chemistry Division, National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan
| | - Masao Umemoto
- Reference Material Institute for Clinical Chemistry Standard (ReCCS), Kanagawa, Japan
| | - Wataru Tani
- Japan Reference Measurement Institute, Kanagawa, Japan
| | | | - Keiko Yasukawa
- Science and Technology Group, Diagnostics Department, Asahi Kasei Pharma, Tokyo, Japan
| | - Takuji Kohzuma
- Science and Technology Group, Diagnostics Department, Asahi Kasei Pharma, Tokyo, Japan
| | - Asako Sato
- Clinical Laboratory, Tokyo Women’s Medical University, Tokyo, Japan
| |
Collapse
|
13
|
Liu IA, Johndrow JE, Abe J, Lüpold S, Yasukawa K, Westneat DF, Nowicki S. Genetic diversity does not explain variation in extra-pair paternity in multiple populations of a songbird. J Evol Biol 2015; 28:1156-69. [PMID: 25876793 DOI: 10.1111/jeb.12644] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 12/19/2014] [Revised: 04/03/2015] [Accepted: 04/08/2015] [Indexed: 11/28/2022]
Abstract
Many songbirds are socially monogamous but genetically polyandrous, mating with individuals outside their pair bonds. Extra-pair paternity (EPP) varies within and across species, but reasons for this variation remain unclear. One possible source of variation is population genetic diversity, which has been shown in interspecific meta-analyses to correlate with EPP but which has limited support from intraspecific tests. Using eight populations of the genetically polyandrous red-winged blackbird (Agelaius phoeniceus), including an island population, we investigated whether population-level differences in genetic diversity led to differences in EPP. We first measured genetic diversity over 10 microsatellite loci and found, as predicted, low genetic diversity in the island population. Additional structure analyses with multilocus genotypes and mtDNA showed the island population to be distinct from the continental populations. However, the island population's EPP rate fell in the middle of the continental populations' distribution, whereas the continental populations themselves showed significant variation in EPP. This result suggests that genetic diversity by itself is not a predictor of EPP rate. We discuss reasons for the departure from previous results, including hypotheses for EPP that do not solely implicate female-driven behaviour.
Collapse
Affiliation(s)
- I A Liu
- Department of Biology, Duke University, Durham, NC, USA
| | - J E Johndrow
- Department of Statistical Science, Duke University, Durham, NC, USA
| | - J Abe
- Department of Biology, Duke University, Durham, NC, USA
| | - S Lüpold
- Department of Biology, Syracuse University, Syracuse, NY, USA
| | - K Yasukawa
- Department of Biology, Beloit College, Beloit, WI, USA
| | - D F Westneat
- Department of Biology, University of Kentucky, Lexington, KY, USA
| | - S Nowicki
- Department of Biology, Duke University, Durham, NC, USA
| |
Collapse
|
14
|
Yasukawa K, Kaneko T, Iba Y, Hirayama K, Kondo Y, Sawada T, Sowa M, Ho J, Kim Y, Chung Y. Preparation of mouse-human chimeric antibody against pancreatic cancer-associated mucin. Int J Oncol 2012; 6:1047-51. [PMID: 21556638 DOI: 10.3892/ijo.6.5.1047] [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
A murine monoclonal antibody, designated Nd2, was generated using a purified mucin from the human pancreatic cancer cell line SW1990 as the immunogen. Administration of Nd2 into the patients with pancreatic cancer has shown that Nd2 is of clinical use for in vivo diagnostics of pancreatic cancer. In this study, starting with a previously established hybridoma producing Nd2, we have established a transfected cell line expressing a recombinant chimeric Nd2 composed of mouse-derived antigen-binding variable regions and human-derived constant regions. The chimeric Nd2 was shown to bind purified mucin from SW1990 cells with the same dose-response curve as the original Nd2. Immunohistochemical experiments have shown that the reactivity of the chimeric Nd2 in normal and malignant pancreatic tissue is also the same as that of the original Nd2. Replacement of a substantial portion of the mouse protein makes this chimeric Nd2 more promising for clinical application than the original mouse-derived Nd2 because its antigenicity is expected to be reduced.
Collapse
Affiliation(s)
- K Yasukawa
- OSAKA CITY UNIV,SCH MED,DEPT SURG 1,ABENO KU,OSAKA 545,JAPAN. UNIV CALIF SAN FRANCISCO,VET AFFAIRS MED CTR,GASTROINTESTINAL RES LAB,SAN FRANCISCO,CA. UNIV CALIF SAN FRANCISCO,DEPT MED,SAN FRANCISCO,CA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Menach E, Yasukawa K, Inouye K. Effects of site-directed mutagenesis of Asn116 in the -hairpin of the N-terminal domain of thermolysin on its activity and stability. J Biochem 2012; 152:231-9. [DOI: 10.1093/jb/mvs064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
16
|
Samukange V, Yasukawa K, Inouye K. Interaction of 8-anilinonaphthalene 1-sulphonate (ANS) and human matrix metalloproteinase 7 (MMP-7) as examined by MMP-7 activity and ANS fluorescence. J Biochem 2012; 151:533-40. [DOI: 10.1093/jb/mvs025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
17
|
Ohnuki Y, Torii C, Kosaki R, Yagihashi T, Sago H, Hayashi K, Yasukawa K, Takahashi T, Kosaki K. Cri-du-Chat Syndrome Cytogenetically Cryptic Recombination Aneusomy of Chromosome 5: Implications in Recurrence Risk Estimation. Mol Syndromol 2010; 1:95-98. [PMID: 21045963 DOI: 10.1159/000319321] [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: 11/19/2022] Open
Abstract
Cri-du-chat syndrome is caused by haploinsufficiency of the genes on the distal part of the short arm of chromosome 5, and characteristic features include microcephaly, developmental delays, and a distinctive high-pitched mewing cry. Most cri-du-chat syndrome cases result from a sporadic de novo deletion that is associated with a low recurrence risk. On rare occasions, however, cri-du-chat syndrome with 5p monosomy can be accompanied by 5q trisomy. This combination is virtually always associated with parental large pericentric inversions. Among previously reported cri-du-chat syndrome cases with 5p monosomy accompanied by 5q trisomy, the aneusomy of chromosome 5 in all but one case was cytogenetically visible using G-banding. When an accompanying 5q trisomy is detected, a significant recurrence risk is expected. We here report on a patient with cri-du-chat syndrome phenotype who initially exhibited a normal karyotype on G-banding but in whom molecular analysis using multiplex ligation-dependent probe amplification and array comparative genomic hybridization revealed a 5p deletion accompanied by a 5q duplication. Parental chromosomal testing led to the identification of a very large pericentric inversion, of which breakpoints resided at the terminal regions of 5p15.31 and 5q35.1. This information was vital for counseling the family regarding the significantly high recurrence risk.
Collapse
Affiliation(s)
- Y Ohnuki
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Chardin H, Yasukawa K, Nouacer N, Plainvert C, Aucouturier P, Ergani A, Descroix V, Toledo-Arenas R, Azerad J, Bouvet A. Reduced susceptibility to amoxicillin of oral streptococci following amoxicillin exposure. J Med Microbiol 2009; 58:1092-1097. [DOI: 10.1099/jmm.0.010207-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
As antibiotic pressure often triggers bacterial resistance, the use of short-duration therapies is increasingly recommended. The objective of the present study was to evaluate both the clinical efficiency and the impact on oral streptococci of a 3 day versus a 7 day amoxicillin therapy for odontogenic infection requiring tooth extraction. On day 0, patients were randomly assigned to a 3 day or 7 day amoxicillin treatment. The tooth was extracted on day 2 and the post-operative follow-up was carried out on day 9. Oral flora was collected on days 0, 9 and 30, and the susceptibility of the streptococci to amoxicillin was determined. The results showed that treatment with amoxicillin for 3 or 7 days had a similar clinical efficiency, and also induced similar selection of oral streptococci with reduced susceptibility to amoxicillin, suggesting that the selection of strains with reduced susceptibility to amoxicillin is a rapid phenomenon, appearing even with short-duration therapies.
Collapse
Affiliation(s)
- H. Chardin
- Université Paris Descartes, Paris, France
- Service d'Odontologie, Hôpital Albert Chenevier, AP-HP, 40 Rue de Mesly, 94000 Créteil, France
| | - K. Yasukawa
- Service d'Odontologie, Hôpital Albert Chenevier, AP-HP, 40 Rue de Mesly, 94000 Créteil, France
| | - N. Nouacer
- Service de Microbiologie-Hygiène, Laboratoire Associé au Centre National de Référence des Streptocoques, AP-HP, Hôpital de l'Hôtel-Dieu, Paris, France
| | - C. Plainvert
- Service de Microbiologie-Hygiène, Laboratoire Associé au Centre National de Référence des Streptocoques, AP-HP, Hôpital de l'Hôtel-Dieu, Paris, France
- Université Paris Descartes, Paris, France
| | - P. Aucouturier
- Unité de Recherche Clinique, Hôpital Européen Georges Pompidou, AP-HP, INSERM CIE 4, Paris, France
| | - A. Ergani
- Service de Microbiologie-Hygiène, Laboratoire Associé au Centre National de Référence des Streptocoques, AP-HP, Hôpital de l'Hôtel-Dieu, Paris, France
- Université Paris Descartes, Paris, France
| | - V. Descroix
- Service d'Odontologie, Hôpital de la Pitié – Salpétrière, AP-HP, Paris, France
| | - R. Toledo-Arenas
- Service d'Odontologie, Hôpital de la Pitié – Salpétrière, AP-HP, Paris, France
| | - J. Azerad
- Service d'Odontologie, Hôpital de la Pitié – Salpétrière, AP-HP, Paris, France
| | - A. Bouvet
- Service de Microbiologie-Hygiène, Laboratoire Associé au Centre National de Référence des Streptocoques, AP-HP, Hôpital de l'Hôtel-Dieu, Paris, France
- Université Paris Descartes, Paris, France
| |
Collapse
|
19
|
Yasukawa K, Mizuno M, Inouye K. Characterization of Moloney Murine Leukaemia Virus/Avian Myeloblastosis Virus Chimeric Reverse Transcriptases. J Biochem 2009; 145:315-24. [DOI: 10.1093/jb/mvn166] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
20
|
Kusano M, Yasukawa K, Inouye K. Insights into the Catalytic Roles of the Polypeptide Regions in the Active Site of Thermolysin and Generation of the Thermolysin Variants with High Activity and Stability. J Biochem 2008; 145:103-13. [DOI: 10.1093/jb/mvn140] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
21
|
Hirano T, Taga T, Yamasaki K, Matsuda T, Yasukawa K, Hirata Y, Yawata H, Tanabe O, Akira S, Kishimoto T. Molecular cloning of the cDNAs for interleukin-6/B cell stimulatory factor 2 and its receptor. Ann N Y Acad Sci 2008; 557:167-78, discussion 178-80. [PMID: 2786692 DOI: 10.1111/j.1749-6632.1989.tb24010.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- T Hirano
- Division of Cellular Immunology, Osaka University, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Yasukawa K, Sawamura D, Goto M, Nakamura H, Shimizu H. Histone deacetylase inhibitors preferentially augment transient transgene expression in human dermal fibroblasts. Br J Dermatol 2007; 157:662-9. [PMID: 17711521 DOI: 10.1111/j.1365-2133.2007.08122.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Skin is an attractive target for gene therapy. However, low efficiency of gene transfection has been a major problem. Histone deacetylase (HDAC) inhibitors have been reported to increase transgene expression in malignant cells. OBJECTIVES We have estimated how much HDAC inhibitors might increase transgene expression in HaCaT cells, normal human epidermal keratinocyte (NHEK) cells, normal human dermal fibroblast (NHDF) cells and also in stratified cultured epidermal sheets that mimic the structure of the skin. METHODS After treatment with each HDAC inhibitor [trichostatin A, FK228 and cyclic hydroxamic acid-containing peptide 31 (CHAP31)], transient transgene expression in HaCaT, NHEK and NHDF cells and stratified cultured epidermal sheets was compared with that of respective controls without treatment. Reactivation of transgene expression using HDAC inhibitors in HaCaT cells stably expressing the transgene was also studied. RESULTS All HDAC inhibitors equally increased transient transgene expression by 2-fold in NHEK cells, 20-fold in NHDF cells and 6-fold in HaCaT cells when compared with untreated cells. This augmented expression continued for 72 h in all cell lines maintained under each HDAC inhibitor. In cells stably expressing the transgene, only CHAP31 reactivated transgene expression. In stratified cultured epidermal sheets, CHAP31 most effectively improved transient transgene expression. CONCLUSIONS HDAC inhibitors are most efficient at amplifying transient transgene expression in NHDF cells. This suggests that NHDF cells may be most suitable as transgene targets for transient gene transfection using HDAC inhibitors. Specific HDAC inhibitors may not prove so useful for treating genetic dermatoses requiring cells stably expressing the correct gene, but may be advantageous in treating nonhealing cutaneous wounds or cancer.
Collapse
Affiliation(s)
- K Yasukawa
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo 060-8638, Japan.
| | | | | | | | | |
Collapse
|
23
|
Yasukawa K, Kato N, Aikawa K, Kodama K, Hamasaka A, Hata H. Neutrophilic Eccrine Hidradenitis with Sclerodermoid Change Heralding the Relapse of Acute Myelogenous Leukemia: Is This a Paraneoplastic Phenomenon? Dermatology 2007; 215:261-4. [PMID: 17823528 DOI: 10.1159/000106588] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
24
|
Moriuchi R, Shibaki A, Yasukawa K, Onozuka T, Sato T, Kaneda M, Iguchi A, Kobayashi R, Shimizu H. Neonatal vesiculopustular eruption of the face: a sign of trisomy 21-associated transient myeloproliferative disorder. Br J Dermatol 2007; 156:1373-4. [PMID: 17459046 DOI: 10.1111/j.1365-2133.2007.07877.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Tatekawa T, Ogawa H, Kawakami M, Oka Y, Yasukawa K, Sugiyama H, Kawase I, Soma T. A novel direct competitive repopulation assay for human hematopoietic stem cells using NOD/SCID mice. Cytotherapy 2007; 8:390-8. [PMID: 16923615 DOI: 10.1080/14653240600847191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND The major problem in cord blood (CB) transplantation for adult patients is shortage of stem cell number. To overcome this disadvantage, several studies on ex vivo expansion have been performed. However, such efforts are always troubled by the lack of a reliable and simple assay system for stem cells. Our aim was to establish an in vivo assay system to compare the directly repopulating ability of two populations of human hematopoietic stem cells using a xenogeneic transplant system. METHODS Thirty CB samples from infants of each sex were pooled and enriched for CD34(+) progenitor cells. Enriched CD34(+) cells were transplanted into irradiated NOD/SCID mice at different male to female ratios, and human hematopoietic cells recovered 7 weeks after transplantation were analyzed by a quantitative DNA sex test using competitive PCR for the amelogenin gene. Using this assay system, ex vivo cultured and non-cultured CB cells were compared for repopulating ability. RESULTS The sex ratio of human CB cells transplanted was found to be maintained for 7 weeks in matured and progenitor cells. The competitive repopulation assay of cultured and non-cultured CB cells showed a marked defect in the repopulating ability of cultured cells, although the LTCIC count was maintained during cultivation. DISCUSSION Our assay system is a simple and reliable quantitative method that permits direct comparison of two stem cell compartments. The assay system will be useful for the assessment of the functional abilities of various human hematopoietic stem cells.
Collapse
Affiliation(s)
- T Tatekawa
- Department of Molecular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Yasukawa K, Sawamura D, Goto M, Nakamura H, Jung SY, Kim SC, Shimizu H. Epidermolysis bullosa simplex in Japanese and Korean patients: genetic studies in 19 cases. Br J Dermatol 2006; 155:313-7. [PMID: 16882168 DOI: 10.1111/j.1365-2133.2006.07285.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Epidermolysis bullosa simplex (EBS) comprises a group of hereditary bullous diseases characterized by intraepidermal blistering caused by mutations in either keratin gene, KRT5 or KRT14. Significant correlation between the position of mutations within these proteins and the clinical severity of EBS has been noted. A recent report showed EBS cases in Israel had unique genetic features compared with European or U.S.A. associated families, which suggests that the ethnic and geographical features of EBS patients may be different. OBJECTIVES To assess the possibility that EBS may present with certain specific features in Japanese and Koreans and to identify additional EBS mutations for genotype/phenotype correlation. METHODS EBS was clinically diagnosed and confirmed by transmission electron microscopic examination of a skin biopsy. Mutation analysis of KRT5 and KRT14 was performed by direct sequencing in 17 Japanese and two Korean EBS patients. RESULTS We have identified six novel KRT5 missense mutations (V143D, D158V, V186M, Q191P, R352S, G517D). R352S is the first mutation in the 2A domain. Most of these novel mutations changed amino acids that were evolutionarily conserved. Eight including all five mutations in EBS-Dowling-Meara patients have been previously reported. We were unable to detect mutations in five sporadic EBS-Koebner patients. The proportion of mutations in KRT5 (11 of 14; 78%) is higher than that for KRT14 mutations (3 of 14; 21%) in these Japanese and Korean EBS patients. CONCLUSIONS Japanese and Korean patients with EBS showed very similar phenotype and genotype correlations with patients from Western countries. Whether the higher proportion of KRT5 mutations is a definite characteristic of Japanese and Korean patients with EBS or not, requires further research into mutations in Japanese and Korean people.
Collapse
Affiliation(s)
- K Yasukawa
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 060-8638, Japan
| | | | | | | | | | | | | |
Collapse
|
27
|
Hatta Y, Takeuchi J, Saitoh T, Itoh T, Ishizuka H, Iriyama N, Miyajima T, Kaneita Y, Saiki M, Yasukawa K, Yasukawa R, Kura Y, Nishinarita S, Sawada U, Horie T. WT1 expression level and clinical factors in multiple myeloma. J Exp Clin Cancer Res 2005; 24:595-9. [PMID: 16471322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Although Wilm's Tuomor gene (WT1) was first identified as a tumor suppressor gene for Wilm's tumor, WT1 overexpression has been detected in different malignant cell types including leukemia. Increased expression of WT1 in acute leukemia is potentially used as a marker of minimal residual disease. However, the significance of the gene for multiple myeloma is still not clear. To determine the clinical relevance of WT1 expression in multiple myeloma, we examined the association of clinical parameters and WT1 expression in bone marrow for 17 newly diagnosed multiple myeloma patients. WT1 was assessed by real-time quantitative polymerase chain reaction (RQ-PCR) and calculated standardized WT1 expression level per 100 plasma cells in the bone marrow specimen as "corrected WT1". The expression of standardized WT1 and corrected WT1 in myeloma was 59 to 1,600 copies/microg RNA and 0.05 to 406.3 copies/microg RNA/100 plasma cells, respectively, lower than in leukemia. WT1 transcripts increased when clinical factors worsen, including the stage, amount of M protein, Hb, platelet count, blood urea nitrogen (BUN), creatinine, serum alkaline phosphatase (ALP), calcium, beta2-microglobulin, thymidine kinase activity (TK), and C-reactive protein (CRP). In conclusion, the expression level of WT1 could be an additional marker to the standard parameters considered in risk assessment for multiple myeloma.
Collapse
Affiliation(s)
- Y Hatta
- Dept. of Hematology and Rheumatology, Nihon University School of Medicine, Tokyo, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Mizuguchi H, Mizuno H, Yasukawa K, Ishiguro T, Fukui K, Imanaka T, Takagi M. Enhanced signal transduction by a directly fused protein of interleukin-6 and its receptor. J Biosci Bioeng 2005; 91:299-304. [PMID: 16232993 DOI: 10.1263/jbb.91.299] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2000] [Accepted: 12/23/2000] [Indexed: 11/17/2022]
Abstract
In order to develop a new type of agonist for the interleukin 6 (IL-6) signal, the gene encoding a directly fused protein (DFP) was constructed by joining the N-terminal portion of IL-6 and the C-terminal (soluble) portion of IL-6R (sIL-6R) without using a flexible polypeptide linker. The biological activity if DFP from a recombinant Pichia pastoris was examined by growth stimulation of IL-6-dependent BAF130 cells expressing human gp130, a membrane receptor. The recombinant DFP exhibited a much stronger growth stimulation (10 times) than the independent IL-6 and sIL-6R (IL-6/sIL-6R), mainly because association of the IL-6 and IL-6R could be maintained even at lower concentrations of DFP. Surface plasmon resonance (SPR) analysis showed that DFP bound to the extracellular portion of gp130 in the biphasic mode, and the dissociation constants of DFP for two phases were the same as those of IL-6/sIL-6R. In cells treated with DFP, stimulation of Stat3 phosphorylation was maintained for a longer period (150 min) than in cells treated with IL6/Il-6R, suggesting that the signal mediated by the DFP was more durable than that mediated by IL-6/sIL-6R, although the signal transduction mechanisms are almost the same for both DFP and IL-6/IL-6R. Therefore, the stronger activity of DFP was attributed to the maintained association of its subunits and/or prolonged phosphorylation of Stat3.
Collapse
Affiliation(s)
- H Mizuguchi
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | | | | | | | | | | | | |
Collapse
|
29
|
Abstract
Leuprorelin acetate, an agonist of gonadotropin-releasing hormone (GnRH), is indicated in the treatment of prostate cancer. Recently, depot formulations of leuprorelin acetate have been widely used. We report three patients who showed a granulomatous reaction after treatment using a leuprorelin acetate 3-month depot formulation. These patients presented with 5-6-cm subcutaneous nodules at injection sites, which developed after the depot type was changed from a 1-month to a 3-month formulation. Skin biopsy showed epithelioid cells and foreign body giant cells containing round, translucent microspheres which formed sarcoidal granulomas. Changing to other GnRH agonists resulted in no further problems. We have reviewed the previous reports of leuprorelin acetate-induced granuloma formation. The formation of such granulomas may be related to the polymers that allow slow release after injection, or leuprorelin acetate itself may be responsible. The depot injection methods using leuprorelin also seem to have a causal effect in granuloma formation. Dermatologists need to know that depot leuprorelin acetate may cause a granulomatous reaction which produces a subcutaneous nodule that might be misdiagnosed as a malignant tumour.
Collapse
Affiliation(s)
- K Yasukawa
- Department of Dermatology, National Hospital Organization Hokkaido Cancer Centre, Sapporo, Hokkaido, Japan
| | | | | | | |
Collapse
|
30
|
Shimizu S, Yasui C, Yasukawa K, Nakamura H, Shimizu H, Tsuchiya K. Subcutaneous nodules on the buttocks as a manifestation of dialysis-related amyloidosis: a clinicopathological entity? Br J Dermatol 2003; 149:400-4. [PMID: 12932251 DOI: 10.1046/j.1365-2133.2003.05466.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
While beta 2-microglobulin amyloidosis occurring in patients undergoing long-term dialysis is frequently associated with joint involvement, skin lesions have rarely been encountered. We report a 57-year-old man with extensive subcutaneous amyloid deposition forming large nodules on the buttocks; the patient had been on maintenance dialysis for 28 years. Although this condition is rare, a review of the literature indicates that the majority of such lesions occur around the buttock region.
Collapse
Affiliation(s)
- S Shimizu
- Department of Dermatology, Sapporo City General Hospital, North 11, West 13, Chuo-Ku, Sapporo 060-8604, Japan.
| | | | | | | | | | | |
Collapse
|
31
|
Akihisa T, Tokuda H, Ichiishi E, Mukainaka T, Toriumi M, Ukiya M, Yasukawa K, Nishino H. Anti-tumor promoting effects of multiflorane-type triterpenoids and cytotoxic activity of karounidiol against human cancer cell lines. Cancer Lett 2001; 173:9-14. [PMID: 11578803 DOI: 10.1016/s0304-3835(01)00689-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Forty-nine multiflorane-type triterpenoids consisting of 11 compounds isolated from the seeds of Trichosanthes kirilowii (Cucurbitaceae) and 38 of their derivatives have been evaluated for their inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) activation induced by the tumor promoter 12-O-tetradecanoylphorbol-13-acetate in Raji cells as a primary screening test for anti-tumor promoters. All of the compounds tested showed an inhibitory effect against EBV-EA activation, and among which 43 were revealed to possess remarkable activity with potencies either comparable to or stronger than that of glycyrrhetic acid, a known natural anti-tumor promoter. Their structure-activity relationship is discussed. Evaluation of the cytotoxic activity of karounidiol (27) against human cancer cell lines exhibited cytotoxicity especially against a human renal cancer.
Collapse
Affiliation(s)
- T Akihisa
- College of Science and Technology, Nihon University, 1-8 Kanda Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Abstract
A female infant with isolated noncompaction of ventricular myocardium who developed ventricular tachyarrhythmia is described. Wolff-Parkinson-White syndrome was shown by electrocardiography. At 9 months of age, the patient suddenly developed cardiac arrest. Electrocardiography following resuscitation with DC cardioversion demonstrated sinus rhythm without delta wave. The QT interval was normal. Frequent premature ventricular captures caused ventricular fibrillation. DC cardioversion was necessary to terminate frequent attacks of ventricular fibrillation until the introduction of beta blockers and lidocaine. Two-dimensional echocardiogram confirmed the diagnosis of isolated non-compaction of ventricular myocardium. Three months later, the patient died of ventricular fibrillation during respiratory syncytial viral infection.
Collapse
Affiliation(s)
- K Yasukawa
- Department of Pediatrics, Chiba University School of Medicine, and Department of Pediatrics, Asahi General Hospital Chiba 260-8670, Japan
| | | | | | | |
Collapse
|
33
|
Rajic A, Akihisa T, Ukiya M, Yasukawa K, Sandeman RM, Chandler DS, Polya GM. Inhibition of trypsin and chymotrypsin by anti-inflammatory triterpenoids from Compositae flowers. Planta Med 2001; 67:599-604. [PMID: 11582534 DOI: 10.1055/s-2001-17350] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Taraxastane, oleanane, ursane, lupane, taraxane, cycloartane, dammarane and tirucallane triterpenoids isolated from flowers of Compositae plants have been previously reported to exhibit anti-inflammatory effects and are variously competitive and non-competitive inhibitors of the serine proteases trypsin and chymotrypsin. The general features of those triterpenoids found to be protease inhibitors are having a hydroxy group and an appropriate side chain in the region of the molecule distal to the 3-hydroxy group. However, fatty acid esterification of the triterpenoid 3-hydroxy group can have a marked effect on inhibitor effectiveness. This suggests a possible means of rapid alteration of the plant defensive complement in vivo and of the bioactivity of these anti-inflammatory compounds.
Collapse
Affiliation(s)
- A Rajic
- Department of Biochemistry, La Trobe University, Bundoora, Victoria 3086, Australia
| | | | | | | | | | | | | |
Collapse
|
34
|
Ishida T, Yasukawa K, Kojima H, Harashima H, Kiwada H. Effect of cholesterol content in activation of the classical versus the alternative pathway of rat complement system induced by hydrogenated egg phosphatidylcholine-based liposomes. Int J Pharm 2001; 224:69-79. [PMID: 11472816 DOI: 10.1016/s0378-5173(01)00737-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Liposomes composed of hydrogenated egg phosphatidylcholine (HEPC) and cholesterol (CHOL) were found to activate the rat complement (C) system in a CHOL content-dependent manner. Liposomes containing 22 or 33 mol% CHOL activated the C system in a Ca(2+)-dependent manner, suggesting that C activation occurred via the classical pathway. Liposomes containing 44 mol% CHOL activated the C system in a Ca(2+) independent manner, suggesting that C activation occurred via the alternative pathway. The CHOL content appeared to dictate the pathway by which the C system was activated. This C activation was inhibited by removal of serum component(s), which adsorb to the liposomes. Activation of the alternative pathway, induced by the liposomes, was reduced by the depletion of IgG and IgM, whereas the classical pathway activation was reduced by the depletion of IgG, but not IgM. In addition, the removal of adsorbed serum component(s) by treatment with 44 mol% CHOL-containing liposomes decreased serum IgG and IgM levels that adsorb to the same liposomes, whereas the removal of adsorbed serum component(s) by treatment with 22 mol% CHOL-containing liposomes only slightly decreased serum IgG levels, which adsorbs to the same liposomes. Collectively, both IgG and IgM, which are specifically adsorbed to the liposomes in a CHOL-content dependent manner, were responsible for C activation via the alternative pathway induced by the 44 mol% CHOL containing liposomes. IgG alone would be partially responsible for C activation via the classical pathway induced by 22 or 33 mol% CHOL-containing liposomes. The discovery of this unique C-activating property of liposomes will be of value in attempts to decipher the underlying mechanism of C activation by providing a useful model membrane system.
Collapse
Affiliation(s)
- T Ishida
- Department of Pharmacokinetics, Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | | | | | | | | |
Collapse
|
35
|
Ukiya M, Akihisa T, Yasukawa K, Kasahara Y, Kimura Y, Koike K, Nikaido T, Takido M. Constituents of compositae plants. 2. Triterpene diols, triols, and their 3-o-fatty acid esters from edible chrysanthemum flower extract and their anti-inflammatory effects. J Agric Food Chem 2001; 49:3187-97. [PMID: 11453750 DOI: 10.1021/jf010164e] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The n-hexane soluble and the nonsaponifiable lipid fractions of the edible flower extract of chrysanthemum (Chrysanthemum morifolium) were investigated for triterpene diol and triol constituents. These triterpenes occur as the 3-O-fatty acid esters in the n-hexane soluble fraction from which 26 new and 6 known fatty acid esters were isolated and characterized. From the nonsaponifiable lipid fraction, 24 triterpene diols and triols were isolated, of which 3 were new compounds: (24S)-25-methoxycycloartane-3beta,24-diol (11), (24S)-25-methoxycycloartane-3beta,24,28-triol (22), and 22alpha-methoxyfaradiol (23). Faradiol (9) and heliantriol C (19), present in the nonsaponifiable lipid fraction and as the 3-O-palmitoyl esters in the n-hexane soluble fraction, were the most predominant triterpene diol and triol constituents. Fourteen triterpene diols and triols and 9 fatty acid esters were evaluated with respect to their anti-inflammatory activity against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation in mice. All of the triterpenes examined showed marked inhibitory activity, with a 50% inhibitory dose (ID50) of 0.03-1.0 mg/ear, which was more inhibitive than quercetin (ID50 = 1.6 mg/ear), a known inhibitor of TPA-induced inflammation in mice.
Collapse
Affiliation(s)
- M Ukiya
- College of Science and Technology, Nihon University, 1-8 Kanda Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Tateno S, Terai M, Niwa K, Jibiki T, Hamada H, Yasukawa K, Honda T, Oana S, Kohno Y. Alleviation of myocardial ischemia after Kawasaki disease by heparin and exercise therapy. Circulation 2001; 103:2591-7. [PMID: 11382729 DOI: 10.1161/01.cir.103.21.2591] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Heparin promotes angiogenesis. We evaluated the effects of combined treatment with heparin and exercise on myocardial ischemia in the chronic stage of Kawasaki disease. METHODS AND RESULTS This study was conducted in 7 patients (aged 6 to 19 years) who had a totally occluded coronary artery and stress-induced myocardial ischemia in the collateral-dependent areas. Twice-daily exercise using a bicycle ergometer was performed with increments of 0.5 W/kg every 3 minutes up to maximal exertion for 10 days. Heparin, which immediately increased circulating hepatocyte growth factor, was given intravenously 10 minutes before each exercise period. Newly developed myocardial infarction, ventricular tachyarrhythmia, anginal attack, or hemorrhagic complication was not observed in any patient. Dipyridamole-loading single photon emission computed tomography documented improved myocardial perfusion in the collateral-dependent areas and a significant reduction in total defect scores in all patients after the completion of 20 sessions (P=0.01). In control patients who did not receive the heparin-exercise therapy, however, stress defect scores remained unchanged (n=1) or increased (n=2) during follow-up. Computerized quantitative coronary angiography provided evidence that the heparin-exercise therapy increased the diameter of the occluded artery to which collaterals terminated (P=0.001) but not that of the reference artery with which collaterals were not connected (P=0.96). CONCLUSIONS The findings suggest that a series of heparin and exercise treatments over 10 days may have a dramatic effect on the alleviation of myocardial ischemia in collateral-dependent regions. This may be a safe, noninvasive revascularization therapy for patients with coronary artery occlusion in the chronic stage of Kawasaki disease.
Collapse
Affiliation(s)
- S Tateno
- Departments of Pediatrics, Chiba University School of Medicine, Chiba Cardiovascular Center, Chiba, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Akihisa T, Ogihara J, Kato J, Yasukawa K, Ukiya M, Yamanouchi S, Oishi K. Inhibitory effects of triterpenoids and sterols on human immunodeficiency virus-1 reverse transcriptase. Lipids 2001; 36:507-12. [PMID: 11432464 DOI: 10.1007/s11745-001-0750-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Fifty-five triterpenoids consisting of 19 tetracyclic, 32 pentacyclic, and 4 incompletely cyclized triterpenoids, and 2 sterols, mostly isolated from various plant and fungal materials, were examined for their inhibitory effects on a purified human immunodeficiency virus type 1 (HIV-1) reverse transcriptase. Twenty triterpenoids and one sterol showed inhibitory effects with 50% inhibition concentration (IC50) values less than 5.0 microM. Among these cycloartenol ferulate (IC50 = 2.2 microM), 24-methylenecycloartanol ferulate (1.9 microM), lupenone (2.1 microM), betulin diacetate (1.4 microM), and karounidiol 29-benzoate (2.2 microM) inhibited most effectively. Some of the triterpenoids and sterols may be potential new lead compounds to find still more potent HIV-1 reverse transcriptase inhibitors.
Collapse
Affiliation(s)
- T Akihisa
- College of Science and Technology, Nihon University, Tokyo, Japan.
| | | | | | | | | | | | | |
Collapse
|
38
|
Yasukawa K, Swarz H, Ito Y. Review of orthostatic tests on the safety of tamsulosin, a selective alpha1A-adrenergic receptor antagonist, shows lack of orthostatic hypotensive effects. J Int Med Res 2001; 29:236-51. [PMID: 11471862 DOI: 10.1177/147323000102900312] [Citation(s) in RCA: 13] [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: 11/17/2022] Open
Abstract
Two phase III studies with tamsulosin, a selective alpha1A-adrenergic receptor antagonist, were conducted to evaluate the safety and efficacy of the standard treatment doses of 0.4 mg/day and 0.8 mg/day in patients with symptoms of benign prostatic hyperplasia (BPH). These large-scale clinical trials were the first to include extensive testing for possible drug-induced orthostatic hypotension (OH). The frequency of positive orthostatic tests and magnitude of vital sign changes were compared among tamsulosin and placebo-treated groups. The results indicate that tamsulosin up to 0.8 mg/day does not induce higher risk of OH than that of placebo. Data from post-marketing surveillance (PMS) studies of tamsulosin indicate that the incidence of hypotension and syncope is extremely low in community-dwelling elderly men treated for BPH. From the results of the phase III studies, PMS studies and an active-controlled clinical pharmacology study, we conclude that the orthostatic test is a useful and convenient method to evaluate the risk of OH and syncope during the investigational stage.
Collapse
Affiliation(s)
- K Yasukawa
- Yamanouchi Pharmaceutical Co. Ltd, Tokyo, Japan
| | | | | |
Collapse
|
39
|
Yasukawa K, Matsumura T, Sato-Matsumura KC, Takahashi T, Fujioka Y, Kobayashi H, Shimizu H. Kikuchi's disease and the skin: case report and review of the literature. Br J Dermatol 2001; 144:885-9. [PMID: 11298555 DOI: 10.1046/j.1365-2133.2001.04151.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report scattered indurated erythematous lesions that presented in an 18-year-old Japanese man with Kikuchi's disease (KD; histiocytic necrotizing lymphadenitis). A skin biopsy showed a proliferation of histiocytes and abundant nuclear debris without the presence of neutrophils, which is characteristic of KD. The specific dermatological and pathological details of KD have been yet to be fully described. In order to assess the typical skin features of KD better, we have reviewed all the previously well-documented reports of such lesions. As the clinical and histopathological cutaneous findings in KD are so heterogeneous, it is important that scattered indurated erythematous lesions should be included as one of the possible cutaneous manifestations of this disease.
Collapse
Affiliation(s)
- K Yasukawa
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo 060-8638, Japan.
| | | | | | | | | | | | | |
Collapse
|
40
|
Takizawa T, Yanagisawa M, Ochiai W, Yasukawa K, Ishiguro T, Nakashima K, Taga T. Directly linked soluble IL-6 receptor-IL-6 fusion protein induces astrocyte differentiation from neuroepithelial cells via activation of STAT3. Cytokine 2001; 13:272-9. [PMID: 11243705 DOI: 10.1006/cyto.2000.0831] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Signals of interleukin 6 (IL-6) are transduced by binding of IL-6 to its cell surface receptor (IL-6R) and subsequent association of the resultant IL-6/IL-6R complex with gp130, the signal transducing receptor component utilized in common by all the IL-6 family of cytokines. A soluble form of IL-6R (sIL-6R), which lacks transmembrane and cytoplasmic regions, retains the ability to bind IL-6 and signal through gp130. We show here that a fusion protein of sIL-6R and IL-6 without a polypeptide linker, termed FP6, induces differentiation of astrocytes from fetal mouse neuroepithelial cells as potently as a representative IL-6 family cytokine, leukaemia inhibitory factor (LIF). FP6 has a potential to activate a transcription factor, signal transducer and activator of transcription 3 (STAT3), and mitogen-activated protein kinases, ERK1 and ERK2, in these cells as does LIF. FP6 activates a promoter of the gene for an astrocytic marker, glial fibrillary acidic protein (GFAP), in neuroepithelial cells. This activation is virtually abolished by ectopic expression of a dominant-negative form of STAT3, or by introducing a point mutation into the STAT3 response element located in the GFAP promoter. These results suggest that FP6 induces astrocyte differentiation from neuroepithelial cells through STAT3 activation and that FP6 could be of use as a substitute for natural IL-6 family cytokines.
Collapse
Affiliation(s)
- T Takizawa
- Department of Cell Fate Modulation, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | | | | | | | | | | | | |
Collapse
|
41
|
Kimura T, Wang J, Minamiguchi H, Fujiki H, Harada S, Okuda K, Kaneko H, Yokota S, Yasukawa K, Abe T, Sonoda Y. Signal through gp130 activated by soluble interleukin (IL)-6 receptor (R) and IL-6 or IL-6R/IL-6 fusion protein enhances ex vivo expansion of human peripheral blood-derived hematopoietic progenitors. Stem Cells 2001; 18:444-52. [PMID: 11072033 DOI: 10.1634/stemcells.18-6-444] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study was designed to investigate the effects of a combination of soluble interleukin (sIL)-6 receptor (R) and IL-6 on the ex vivo expansion of human peripheral blood (PB)-derived hematopoietic progenitor cells in a short-term serum-free liquid suspension culture system, using PB-derived CD34(+)IL-6R(+/-) cells as a target. In combination with stem cell factor (SCF), IL-3, and sIL-6R/IL-6, the expansion efficiency (EE) for granulocyte/macrophage colony-forming unit (CFU-GM) reached a peak level on day 10 of incubation. On the other hand, the EE for erythroid burst (BFU-E) and mixed colony-forming unit (CFU-Mix) reached a peak level on day 7 of incubation. Among the cytokine combinations tested, SCF + IL-3 + sIL-6R/IL-6 + flt3 ligand (FL) most effectively expanded CFU-GM and CFU-Mix. The maximum EEs for CFU-GM and CFU-Mix were 208-fold and 42-fold, respectively. While the EE for BFU-E was 70-90-fold in the presence of SCF + IL-3 + sIL-6R/IL-6, FL significantly augmented the EE for CFU-GM and CFU-Mix. In contrast, thrombopoietin (TPO) significantly augmented the EE for CFU-Mix. Interestingly, in combination with IL-3 and SCF, newly generated IL-6R/IL-6 fusion protein (FP) expanded PB-derived BFU-E and CFU-Mix twice more effectively than a combination of sIL-6R and IL-6. These results demonstrated that human PB-derived committed progenitors were effectively expanded in vitro using sIL-6R/IL-6 or FP, in combination with IL-3, SCF and/or FL or TPO, and that FP may transduce a stronger intracellular signal than a combination of sIL-6R and IL-6.
Collapse
Affiliation(s)
- T Kimura
- Department of Hygiene, the Department of Gastroenterological Surgery, and the Third Department of Internal Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Abstract
BACKGROUND CD2- CD4+ CD56+ lymphoid malignancy has been only rarely reported the last 5 years. It is characterized by a high incidence of cutaneous involvement, cytologically agranular cells, aggressive clinical course, and negative Epstein-Barr virus (EBV) involvement. OBSERVATION We describe a Japanese patient with a unique hematolymphoid malignancy characterized by an involvement of skin, nasopharyngeal region, bone marrow, lymph node, and a CD4+ CD43+ CD56+ CD2- CD3- CD8- and terminal deoxynucleotidyl transferase phenotype. Clinically, the cutaneous eruptions were purplish, hard, multiple nodules. Histologically, a massive proliferation of atypical pleomorphic cells with medium-sized nuclei were observed throughout the dermis. No clonal rearrangement of T-cell receptor (TCR)-beta gene or immunoglobulin heavy chain J gene was found, and no positive identification of EBV by in situ hybridization for EBV-encoded small nuclear RNA was found. The patient underwent high-dose chemotherapy with autografting of peripheral blood stem cells; however, the tumors quickly relapsed. CONCLUSION We gathered data from 17 cases of lymphoid malignancy from the literature sharing immunophenotypic and genotypic features similar to those of our case, including CD2- CD4+ CD56+ and germline rearrangement of TCR. Although the cellular origin could not be decided, this malignancy was found to have 100% affinity for skin, a short course, and poor prognosis.
Collapse
Affiliation(s)
- N Kato
- Department of Dermatology and Clinical Research Institute, National Sapporo Hospital, Japan
| | | | | | | | | | | | | |
Collapse
|
43
|
Osaki Y, Oana S, Yasukawa K, Fujimori K, Terai M, Niimi H. CATCH22 syndrome with gastroesophageal reflux. Pediatr Int 2000; 42:367-8. [PMID: 10986867 DOI: 10.1046/j.1442-200x.2000.01233.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Y Osaki
- Department of Pediatrics, Chiba University School of Medicine, Japan.
| | | | | | | | | | | |
Collapse
|
44
|
Kato N, Onozuka T, Yasukawa K, Kimura K, Sasaki K. Penile hybrid verrucous-squamous carcinoma associated with a superficial inguinal lymph node metastasis. Am J Dermatopathol 2000; 22:339-43. [PMID: 10949460 DOI: 10.1097/00000372-200008000-00008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A 62-year-old Japanese man who presented with penile carcinoma is reported. The initial exophytic neoplasm excised from the coronal sulcus and prepuce on the abdominal side of the penis was diagnosed histologically as verrucous carcinoma. Twenty-six months after the primary operation, an epithelial neoplasm recurred within the scar of the primary operation. The neoplasm histologically showed verrucous carcinoma and multiple invasive foci of conventional squamous cell carcinoma in the advancing edge of the tumor, as such representing a hybrid verrucous-squamous carcinoma. A lymph node metastasis in the left superficial inguinal lymph node occurred 4 months after the second operation. A total bilateral inguinal lymphadenectomy was performed and revealed no other lymph node metastases. The patient is alive without local recurrence or evidence of metastases in pelvic lymph nodes or visceral organs 2 years after the resection of the hybrid verrucous-squamous carcinoma. The initial verrucous carcinoma, recurrent hybrid verrucous-squamous carcinoma, and metastatic lymph node were negative for human papillomavirus DNA type 6, 11, 16, 18, and 33 sequences by dot blot hybridization of polymerase chain reaction products. The characteristics of hybrid verrucous-squamous carcinoma and importance of lymph node metastasis in penile carcinoma are discussed.
Collapse
Affiliation(s)
- N Kato
- Department of Dermatology and Clinical Research Institute, National Sapporo Hospital, Japan
| | | | | | | | | |
Collapse
|
45
|
Minamiguchi H, Yahata N, Kimura T, Fujiki H, Harada S, Wang J, Okuda K, Kaneko H, Hodohara K, Banba T, Yasukawa K, Ohyashiki JH, Ohyashiki K, Abe T, Sonoda Y. Interleukin 6 receptor expression by human cord blood- or peripheral blood-derived primitive haematopoietic progenitors implies acquisition of different functional properties. Br J Haematol 2000; 110:327-38. [PMID: 10971389 DOI: 10.1046/j.1365-2141.2000.02148.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The significance of interleukin 6 receptor (IL-6R) expression by cord blood (CB)- and peripheral blood (PB)-derived primitive haematopoietic progenitors was investigated. IL-6R was preferentially expressed by PB-derived myeloid progenitors. Most PB-derived erythroid bursts (BFU-E) and mixed colony-forming cells (CFU-Mix) did not express this receptor. However, CB-derived primitive progenitor cells possessed multipotentiality, irrespective of IL-6R expression. Interestingly, the long-term culture-initiating cell (LTC-IC) population was enriched in PB-derived CD34+ IL-6R+ cells, but the extended LTC-IC (ELTC-IC) population, which represents a less mature class of haematopoietic progenitors, seemed to be equally distributed in the IL-6R+ and IL-6R- cell populations. In contrast, the number of LTC-ICs and ELTC-ICs was similar in CB-derived CD34+ IL-6R+ or IL-6R- cells. It is noteworthy that the number of LTC-ICs and ELTC-ICs in CB-derived CD34+ cells was markedly higher than that in PB-derived CD34+ cells regardless of IL-6R expression. Telomerase activity was consistently lower in PB-derived CD34+ IL-6R- cells than in CD34+ IL-6R+ cells. In contrast, telomerase activity was similar in CB-derived CD34+ IL-6R+ or IL-6R- cells. The pattern of telomerase induction upon cytokine stimulation differed between CB- and PB-derived CD34+ IL-6R+ or IL-6R- cells. However, overall telomerase activity per dish was well correlated with the proliferative potential of both cell populations, suggesting that induction of telomerase plays an important role in the escape from replicative senescence of primitive haematopoietic progenitors. Collectively, these results suggest that CB-derived primitive progenitors are less mature than PB-derived progenitors and that the expression of IL-6R by primitive haematopoietic progenitors may have different implications for PB- and CB-derived CD34+ cells.
Collapse
Affiliation(s)
- H Minamiguchi
- Department of Hygiene, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Ukiya M, Akihisa T, Motohashi S, Yasukawa K, Kimura Y, Kasahara Y, Takido M, Tokutake N. 6S,8R-Stereochemistry of the C27- and C29-alkane-6,8-diols isolated from three compositae flowers. Chem Pharm Bull (Tokyo) 2000; 48:1187-9. [PMID: 10959584 DOI: 10.1248/cpb.48.1187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Deltadelta (deltaS-deltaR) values for the C-1 methyl 1H signals in the 1H-NMR spectroscopy of the bis-MTPA esters of four synthetic stereoisomers of alkane-6,8-diols, viz., bis-MTPA esters of (6S,8R)-C27- (1a) and C29- (3a) (Deltadelta = -0.05 ppm), (6R,8S)-C27- (2a) and C29- (4a) (Deltadelta = +0.05 ppm), (6S,8S)-C27- (5a) (Deltadelta = -0.01 ppm), and (6R,8R)-C27- (6a) (Deltadelta = +0.01 ppm) alkane-6,8-diols, made it possible to differentiate unequivocally among the four stereoisomers. This allowed the determination of the (6S,8R)-stereochemistry (Deltadelta = -0.05 ppm for the bis-MTPA esters) for the natural C27- and C29-alkane-6,8-diols isolated from the flowers of three Compositae plants, Carthamus tinctorius, Cynara cardanclus, and Taraxacum platycarpum.
Collapse
Affiliation(s)
- M Ukiya
- College of Science and Technology, Nihon University, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Akihisa T, Yasukawa K, Yamaura M, Ukiya M, Kimura Y, Shimizu N, Arai K. Triterpene alcohol and sterol ferulates from rice bran and their anti-inflammatory effects. J Agric Food Chem 2000; 48:2313-2319. [PMID: 10888543 DOI: 10.1021/jf000135o] [Citation(s) in RCA: 202] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Six novel feruloyl esters of triterpene alcohols and sterols, viz., two trans-ferulates, cycloeucalenol and 24-methylenecholesterol trans-ferulates, and four cis-ferulates, cycloartenol, 24-methyelenecycloartanol, 24-methylcholesterol, and sitosterol cis-ferulates, besides five known trans-ferulates, cycloartenol (CAR), 24-methylenecycloartanol (24-MCA), 24-methylcholesterol, sitosterol, and stigmastanol trans-ferulates, and one known cis-ferulate, stigmastanol cis-ferulate, were isolated from the methanol extract of edible rice bran. These and eight other synthetic trans- and cis-ferulates of triterpene alcohols and sterols, along with the corresponding free alcohols, were evaluated with respect to their anti-inflammatory activity against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation (1 microg per ear) in mice. All of the ferulates showed marked inhibitory activity, and their 50% inhibitory dose (ID(50)) was 0. 1-0.8 mg per ear. On the other hand, whereas two free triterpene alcohols, CAR and 24-MCA, showed strong inhibition (ID(50) 0.2-0.3 mg/ear), eight free sterols examined showed weaker activity (ID(50) 0.7-2.7 mg/ear) than their corresponding ferulates.
Collapse
Affiliation(s)
- T Akihisa
- College of Science and Technology, Nihon University, Tokyo, Japan.
| | | | | | | | | | | | | |
Collapse
|
48
|
Mitani H, Katayama N, Araki H, Ohishi K, Kobayashi K, Suzuki H, Nishii K, Masuya M, Yasukawa K, Minami N, Shiku H. Activity of interleukin 6 in the differentiation of monocytes to macrophages and dendritic cells. Br J Haematol 2000; 109:288-95. [PMID: 10848814 DOI: 10.1046/j.1365-2141.2000.02020.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Peripheral blood monocytes are common precursor cells of dendritic cells (DCs) and macrophages. We have searched for factors with the potential to regulate the differentiation of monocytes to DCs and macrophages. When CD14+ monocytes are cultured with granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin (IL) 4, the CD14+CD1a- population, which consists of macrophages, was found in the serum-containing cultures but not in the serum-free cultures. Addition of IL-6 receptor-neutralizing monoclonal antibody (mAb) or gp130-neutralizing mAb to the serum-containing cultures resulted in a decreased population of CD14+CD1a- cells. An increase in the CD14+CD1a- population with reduction in CD14-CD1a+ DCs was observed with the addition of IL-6 to cultures, whereas IL-11, leukaemia inhibitory factor, oncostatin M or macrophage colony-stimulating factor did not affect the differentiation of monocytes in the presence of GM-CSF plus IL-4. This effect of IL-6 was blocked by tumour necrosis factor alpha (TNF-alpha), lipopolysaccharide (LPS), IL-1beta, CD40 ligand (CD40L) and transforming growth factor beta1 (TGF-beta1). Among these factors, TNF-alpha was most potent in interfering with the action of IL-6. These results suggest that IL-6 inhibits the differentiation of monocytes to DCs by promoting their differentiation toward macrophages, which is modulated by factors such as TNF-alpha, LPS, IL-1beta, CD40L and TGF-beta1.
Collapse
Affiliation(s)
- H Mitani
- The Second Department of Internal Medicine, Mie University School of Medicine, Tsu, Mie 514-8507, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
Anaplastic, CD30(+), large-cell lymphoma (ALCL) is a subtype of non-Hodgkin's lymphoma that accounts for 2% to 8% of all lymphomas. Its most common form is a classical systemic type, which involves multiple nodal and extranodal sites, including the skin. Malignant lymphoproliferative disorders, especially Hodgkin's disease, are known rarely to be associated with acquired ichthyosis, whereas only 1 case of ALCL has been reported to be associated with acquired ichthyosis. We describe a 74-year-old Japanese man with ALCL, involving lymph nodes and the skin, who exhibited acquired ichthyosis. The clinical and histopathologic findings were recorded, and immunophenotyping, T-cell receptor (TCR), and immunoglobulin gene rearrangement were determined. Clinically, right axillary and bilateral inguinal lymph nodes were palpable. The cutaneous eruptions were multiple pinkish and yellow colored, up to thumb-sized nodules, some of which were ulcerated. Histologically, the right axillary lymph node showed proliferation of anaplastic large cells in the paracortical and sinusoidal areas. Both the lymph node and skin showed pleomorphic proliferation of lymphoid cells with a mixture of mononuclear cells having oval, embryo-shaped, reniform, and lobulated nuclei, binucleated Reed-Sternberg-like cells, and multinucleated cells, with giant anaplastic and wreath-shaped nuclei. Immunophenotyping of the neoplastic cells revealed that they were positive for CD30 (Ber-H2), CD15 (Leu-M1), CD45 (LCA), and CD45RO (UCHL-1). Southern blot analysis demonstrated clonal rearrangement of the TCR beta region. In contrast, no novel bands were detected with the immunoglobulin heavy chain JH probe. Several months after the detection of the axillary nodes, an ichthyosiform, scaly eruption developed over almost the entire body of the patient. Histologically, it showed orthokeratotic, slight hyperkeratosis of the epidermis without a granular layer or with only a single layer of cells in the granular layer. Several kinds of lymphoproliferative diseases are associated with acquired ichthyosis, including Hodgkin's disease, multiple myeloma, and lymphomatoid papulosis. This is the second case report of acquired ichthyosis associated with ALCL. Although a common pathomechanism is suspected of underlying the development of acquired ichthyosis in these diseases, it is still unexplained.
Collapse
MESH Headings
- Aged
- Antigens, CD/analysis
- Axilla
- Blotting, Southern
- Gene Rearrangement
- Gene Rearrangement, beta-Chain T-Cell Antigen Receptor/genetics
- Genes, Immunoglobulin/genetics
- Humans
- Ichthyosis/genetics
- Ichthyosis/immunology
- Ichthyosis/pathology
- Immunophenotyping
- Lymph Nodes/pathology
- Lymphatic Metastasis
- Lymphoma, Large-Cell, Anaplastic/genetics
- Lymphoma, Large-Cell, Anaplastic/immunology
- Lymphoma, Large-Cell, Anaplastic/pathology
- Male
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- Skin Neoplasms/pathology
Collapse
Affiliation(s)
- N Kato
- Departments of Dermatology and Clinical Research Institute and Hematology and Clinical Research Institute, National Sapporo Hospital, Sapporo, Japan
| | | | | | | |
Collapse
|
50
|
Ueda T, Tsuji K, Yoshino H, Ebihara Y, Yagasaki H, Hisakawa H, Mitsui T, Manabe A, Tanaka R, Kobayashi K, Ito M, Yasukawa K, Nakahata T. Expansion of human NOD/SCID-repopulating cells by stem cell factor, Flk2/Flt3 ligand, thrombopoietin, IL-6, and soluble IL-6 receptor. J Clin Invest 2000; 105:1013-21. [PMID: 10749580 PMCID: PMC377479 DOI: 10.1172/jci8583] [Citation(s) in RCA: 231] [Impact Index Per Article: 9.6] [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: 12/15/2022] Open
Abstract
Here, we demonstrate a significant ex vivo expansion of human hematopoietic stem cells capable of repopulating in NOD/SCID mice. Using a combination of stem cell factor (SCF), Flk2/Flt3 ligand (FL), thrombopoietin (TPO), and a complex of IL-6 and soluble IL-6 receptor (IL-6/sIL-6R), we cultured cord blood CD34(+) cells for 7 days and transplanted these cells into NOD/SCID mice. Bone marrow engraftment was judged successful when recipient animals contained measurable numbers of human CD45(+) cells 10-12 weeks after transplantation. When cells were cultured with SCF+FL+TPO+IL-6/sIL-6R, 13 of 16 recipients were successfully engrafted, and CD45(+) cells represented 11.5% of bone marrow cells in engrafted recipients. Cells cultured with a subset of these factors were less efficiently engrafted, both as measured by frequency of successful transplantations and prevalence of CD45(+) cells. In animals receiving cells cultured with all 4 factors, human CD45(+) cells represented various lineages, including a large number of CD34(+) cells. The proportion of CD45(+) cells in recipient marrow was 10 times higher in animals receiving these cultured cells than in those receiving comparable numbers of fresh CD34(+) cells, and the expansion rate was estimated at 4.2-fold by a limiting dilution method. Addition of IL-3 to the cytokine combination abrogated the repopulating ability of the expanded cells. The present study may provide a novel culture method for the expansion of human transplantable hematopoietic stem cells suitable for clinical applications.
Collapse
Affiliation(s)
- T Ueda
- Department of Clinical Oncology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|