1
|
Kuga K, Shiotani M, Hori K, Mizuno H, Matsushita Y, Ozaki H, Hayashi K, Kubo T, Kano M. Novel predictive approaches for drug-induced convulsions in non-human primates using machine learning and heart rate variability analysis. J Toxicol Sci 2024; 49:231-240. [PMID: 38692910 DOI: 10.2131/jts.49.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Drug-induced convulsions are a major challenge to drug development because of the lack of reliable biomarkers. Using machine learning, our previous research indicated the potential use of an index derived from heart rate variability (HRV) analysis in non-human primates as a biomarker for convulsions induced by GABAA receptor antagonists. The present study aimed to explore the application of this methodology to other convulsants and evaluate its specificity by testing non-convulsants that affect the autonomic nervous system. Telemetry-implanted males were administered various convulsants (4-aminopyridine, bupropion, kainic acid, and ranolazine) at different doses. Electrocardiogram data gathered during the pre-dose period were employed as training data, and the convulsive potential was evaluated using HRV and multivariate statistical process control. Our findings show that the Q-statistic-derived convulsive index for 4-aminopyridine increased at doses lower than that of the convulsive dose. Increases were also observed for kainic acid and ranolazine at convulsive doses, whereas bupropion did not change the index up to the highest dose (1/3 of the convulsive dose). When the same analysis was applied to non-convulsants (atropine, atenolol, and clonidine), an increase in the index was noted. Thus, the index elevation appeared to correlate with or even predict alterations in autonomic nerve activity indices, implying that this method might be regarded as a sensitive index to fluctuations within the autonomic nervous system. Despite potential false positives, this methodology offers valuable insights into predicting drug-induced convulsions when the pharmacological profile is used to carefully choose a compound.
Collapse
Affiliation(s)
- Kazuhiro Kuga
- Preclinical and Translational Sciences, Takeda Pharmaceutical Company Ltd
| | | | | | | | | | - Harushige Ozaki
- Preclinical and Translational Sciences, Takeda Pharmaceutical Company Ltd
| | | | - Takatomi Kubo
- Graduate School of Information Science, Nara Institute of Science and Technology
| | - Manabu Kano
- Department of Systems Science, Kyoto University
| |
Collapse
|
2
|
Escandón L, Matsui C, Tanaka T, Nishimura T, Imai T, Mizuno H. Case Report of Gas Gangrene after Reconstructive Surgery with Anterolateral Thigh Flap for Resection of Oral Cancer. Plast Reconstr Surg Glob Open 2023; 11:e5381. [PMID: 37964920 PMCID: PMC10642894 DOI: 10.1097/gox.0000000000005381] [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: 04/10/2023] [Accepted: 09/20/2023] [Indexed: 11/16/2023]
Abstract
Necrotizing fasciitis (NF) type I is an acute subcutaneous tissue infection that can promptly disseminate generating crepitus. If not accurately diagnosed and expeditiously treated, it becomes a life-threatening infection. In this report, we present a 65-year-old man who developed a case of NF after a hemiglossectomy resecting a tumor in the dorsal surface of the tongue. A biopsy was performed, and he was pathologically diagnosed with squamous cell carcinoma (T2N1M0). The patient underwent preoperative oral cleaning. Right hemiglossectomy was performed by cervical dissection, pull-through style, with tooth removal on the right mandible and a left anterolateral femoral flap reconstruction. Routine intraoperative lavage was performed with 2000 mL of saline solution. Cefazolin 1gr was administered two times per day postoperatively. Four days after primary surgery, the flap circulation was inadequate; therefore, a computed tomography scan was taken, which indicated gas in the ventral neck area. Tooth extraction was the suspected etiology. Debridement was performed; the abscess was drained and cultured, indicating the presence of Staphylococcus haemolyticus and Escherichia coli. It seems that the abscess was not formed by NF, but rather by leachate reservoir associated with the head and neck tumor. After debridement, re-reconstruction was performed with a deltopectoral flap and pectoralis major myocutaneous flap. When NF is present after a neck dissection, there is a risk of disruption due to the direct invasion and inflammation into the carotid artery. Therefore, it is important to provide adequate oral cleaning care before the surgery and early suspicion of the diagnosis.
Collapse
Affiliation(s)
| | - Chihiro Matsui
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Takakuni Tanaka
- Department of Oral and Maxillofacial Surgery, Toyooka Public Hospital, Hyogo, Japan
| | - Takayoshi Nishimura
- Department of Oral and Maxillofacial Surgery, Toyooka Public Hospital, Hyogo, Japan
| | - Takumi Imai
- Department of Oral and Maxillofacial Surgery, Toyooka Public Hospital, Hyogo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| |
Collapse
|
3
|
Ishigooka G, Mizuno H, Oosuka S, Jin D, Takai S, Kida T. Effects of Angiotensin Receptor Blockers on Streptozotocin-Induced Diabetic Cataracts. J Clin Med 2023; 12:6627. [PMID: 37892765 PMCID: PMC10607684 DOI: 10.3390/jcm12206627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/06/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
This study aimed to determine the role of oxidative stress produced by the renin-angiotensin system (RAS) in cataract formation in streptozotocin-induced diabetic rats (STZ) using angiotensin II receptor blockers (ARBs). Rats were treated with streptozotocin and orally administered candesartan (2.5 mg/kg/day) or a normal diet for 10 weeks until sacrifice. Cataract progression was assessed through a slit-lamp examination. Animals were euthanized at 18 weeks, and the degree of cataract progression was evaluated. Oxidative stress was also assessed. In STZ-treated rats, lens opacity occurred at 12 weeks. Cataract progression was inhibited in the ARB-treated group compared with the placebo group (p < 0.05). STZ-treated rats exhibited upregulated angiotensin-converting enzyme (ACE) gene expression than control rats. Oxidative stress-related factors were upregulated in the placebo-treated group but suppressed in the ARB-treated group. A correlation coefficient test revealed a positive correlation between ACE gene expression and oxidative stress-related factors and a negative correlation between ACE and superoxide dismutase. Immunostaining revealed oxidative stress-related factors and advanced glycation end products in the lens cortex of the placebo-treated group. The mechanism of diabetic cataracts may be related to RAS, and the increase in focal ACE and angiotensin II in the lens promotes oxidative stress-related factor production.
Collapse
Affiliation(s)
- Gaku Ishigooka
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (H.M.); (S.O.)
| | - Hiroshi Mizuno
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (H.M.); (S.O.)
| | - Shou Oosuka
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (H.M.); (S.O.)
| | - Denan Jin
- Department of Innovative Medicine, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (D.J.); (S.T.)
| | - Shinji Takai
- Department of Innovative Medicine, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (D.J.); (S.T.)
| | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan; (H.M.); (S.O.)
| |
Collapse
|
4
|
Matsui C, Escandón JM, Mohammad A, Tanaka T, Wynn ET, Mizuno H, Roche N. Clinical applications of the chimeric anterolateral thigh (ALT) flap in head and neck reconstruction. Acta Chir Belg 2023; 123:473-480. [PMID: 35499297 DOI: 10.1080/00015458.2022.2073016] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Surgical site infection (SSI) is a common complication following head and neck surgery. Dead space at the excision site can increase the risk of infection, abscess formation, and mortality. Herein, we evaluated the performance of the chimeric anterolateral thigh (ALT) flap in addressing these concerns. METHODS Patients who underwent oncologic head and neck reconstruction between October 2016 and November 2021 were divided in two groups: a normal ALT flap and a chimeric dead space filling (DSF) ALT-vastus lateralis flap group. We evaluated the postoperative outcomes. RESULTS Twenty-five patients treated with normal ALT flaps (34.7%) and 47 with DSF ALT flap group (65.2%) were included. Only one ALT per case was necessary. Most of the cases involved tongue (31.9%) and lower gingival reconstruction (27.8%). The time to harvest the DSF ALT flap was 134.3 min when compared to the normal ALT flap (116.2 min, p < .001). Vascular occlusion, flap loss, partial necrosis, and fat necrosis were not observed among the different groups. CONCLUSION The DSF process can be used as a preventive measure for SSI or vessel exposure due to radiation-induced skin damage. This flap allows same-site reconstruction if the primary tumor recurs by using the pedicle of the chimeric flap for reattachment of another free flap.
Collapse
Affiliation(s)
- Chihiro Matsui
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Joseph M Escandón
- Division of Plastic and Reconstructive Surgery, University of Rochester Medical Center, Strong Memorial Hospital, New York, NY, USA
| | - Arbab Mohammad
- Aarupadai Veedu Medical College and Hospital, Puducherry, India
| | | | - Ei Thinzar Wynn
- Department of Plastic and Reconstructive Surgery, Countess of Chester Hospital NHS Foundation Trust, Chester, UK
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Nathalie Roche
- Department of Plastic and Reconstructive Surgery, Ghent University Hospital, Ghent, Belgium
| |
Collapse
|
5
|
Sano K, Kimura K, Ichikawa Y, Mizuno H. Blind Curettage Technique for Treatment of Mucous Cysts Associated with Heberden Nodes: Description of Operative Technique. J Hand Microsurg 2023. [DOI: 10.1055/s-0043-1761228] [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: 03/14/2023] Open
Abstract
AbstractThe standard treatment for mucous cysts with Heberden nodes is excision of the dorsolateral osteophytes and capsule of the distal interphalangeal joint or thumb interphalangeal joint, including the stalk of the cyst. The skin incision varies for cases depending upon the geometry. We propose a surgical method utilizing blind lateral approaches for treating such mucous cysts.
Collapse
Affiliation(s)
- Kazufumi Sano
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
- Division of Orthopedic Surgery, Koshigaya Seiwa Hospital, 4-25-5 Yanaka-cho Koshigaya, Saitama, Japan
| | - Kazumasa Kimura
- Division of Orthopedic Surgery, Koshigaya Seiwa Hospital, 4-25-5 Yanaka-cho Koshigaya, Saitama, Japan
- Department of Orthopedic Surgery, Dokkyo Saitama Medical Center, 2-1-50 Minami-koshigaya Koshigaya, Saitama, Japan
| | - Yuichi Ichikawa
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| |
Collapse
|
6
|
Sano K, Suehara Y, Kubota D, Takahashi R, Ichikawa Y, Tobita M, Mizuno H. Subtotal Second Toe Transfer for Finger Reconstruction after Malignant Fibroblastic Tumor Resection. J Hand Microsurg 2023. [DOI: 10.1055/s-0043-1762897] [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: 03/16/2023] Open
Abstract
AbstractThe transposition of an adjacent finger following the loss of a finger due to a malignant tumor resection improves hand function. However, patients may not accept the resulting appearance of a three-finger hand. A 28-year-old male with a malignant fibroblastic tumor at the base of the ring finger underwent resection of the tumor, excising the phalanx and a portion of the metacarpal. He refused a ray amputation and subsequent fifth-finger transposition. Therefore, we reconstructed the defect with a long-vascularized subtotal second toe from the metacarpal neck to the middle phalanx base of the fourth finger. There was no tumor recurrence, and the patient was highly satisfied with hand function and cosmetic appearance at 3 years of follow-up.
Collapse
Affiliation(s)
- Kazufumi Sano
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Yoshiyuki Suehara
- Department of Orthopaedic Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Daisuke Kubota
- Department of Orthopaedic Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Rina Takahashi
- Department of Rehabilitation Medicine, Dokkyo Saitama Medical Center, 2-1-50 Minami-koshigaya Koshigaya, Saitama, Japan
| | - Yuichi Ichikawa
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Miho Tobita
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic & Reconstructive Surgery, Juntendo University Hospital, 3-1-3 Hongo Bunkyoku, Tokyo, Japan
| |
Collapse
|
7
|
Mohammad A, Escandón JM, Matsui C, Tanaka T, Wei-Kai Lao W, Yoshitsugu H, Matsui Y, Mizuno H. Intraoperative Identification of Perforator Spasm and Decreased Pulsation Using Video-capillaroscopy during Free Flap Harvest. Plast Reconstr Surg Glob Open 2022; 10:e4613. [PMID: 36348753 PMCID: PMC9633086 DOI: 10.1097/gox.0000000000004613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/31/2022] [Indexed: 11/23/2022]
Abstract
Temporary or prolonged vascular spasm can be appreciated when perivascular dissection is performed for microvascular reconstruction. Due to a lack of reliable assessment modalities, the resolution of spasm at the periphery of perforators cannot be determined by naked eyes or surgical loupes. To address this conundrum, we aimed to observe the state of perforator vessel spasm after flap elevation using video-capillaroscopy. Between November 2021 and February 2022, seven free flaps were evaluated with video-capillaroscopy to determine the incidence of vasospasm in less than 1 mm-diameter perforators. The type of perforator spasm after flap elevation was divided into six types according to the video-capillaroscopy findings: type A, no spasm/decreased pulsation (S/DP); type B, S/DP with recovery within 5 minutes; type C, S/DP requiring papaverine hydrochloride spraying and hot water treatment (PHS+HWT) resulting in recovery within 5 minutes; type D, S/DP requiring PHS+HWT resulting in recovery within 10 minutes; type E, S/DP requiring PHS+HWT resulting in recovery within 15 minutes; and type F, S/DP with no recovery of pulsation even after PHS+HWT. Twenty-five perforators were evaluated, 3.57 perforators (range, 3-4) per flap. Using our classification for perforator vessel spasms on video-capillaroscopy, observations of five perforating branches were classified as type A, seven as type B, six as type C, five as type D, and two as type E. No type F spasm was observed. With video-capillaroscopy it is possible to confirm if blood flow deterioration occurs even in areas that are difficult to determine macroscopically. Video-capillaroscopy, a noninvasive imaging modality, is a useful alternative for the intraoperative evaluation of perforator flow and spasm.
Collapse
Affiliation(s)
- Arbab Mohammad
- From the Aarupadai Veedu Medical College and Hospital, Puducherry, India
| | - Joseph M. Escandón
- Division of Plastic and Reconstructive Surgery, Strong Memorial Hospital, University of Rochester Medical Center, N.Y
| | - Chihiro Matsui
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Takakuni Tanaka
- Department of Oral and Maxillofacial Surgery, Toyooka Public Hospital, Hyogo, Japan
| | | | - Hattori Yoshitsugu
- Department of Plastic Surgery, Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Tokyo, Japan
| | - Yuki Matsui
- Department of Urology, Showa University Fujigaoka Hospital, Kanagawa, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| |
Collapse
|
8
|
Jiang S, Ito-Hirano R, Shen TNY, Fujimura S, Mizuno H, Tanaka R. Effect of MNCQQ Cells on Migration of Human Dermal Fibroblast in Diabetic Condition. Biomedicines 2022; 10:biomedicines10102544. [PMID: 36289806 PMCID: PMC9599466 DOI: 10.3390/biomedicines10102544] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/05/2022] [Accepted: 10/09/2022] [Indexed: 11/18/2022] Open
Abstract
A major symptom of diabetes mellitus (DM) is unfit hyperglycemia, which leads to impaired wound healing. It has been reported that the migration of fibroblasts can be suppressed under high glucose (HG) conditions. In our previous study, we introduced a serum-free culture method for mononuclear cells (MNCs) called quantity and quality control culture (QQc), which could improve the vasculogenic and tissue regeneration ability of MNCs. In this study, we described a culture model in which we applied a high glucose condition in human dermal fibroblasts to simulate the hyperglycemia condition in diabetic patients. MNC-QQ cells were cocultured with fibroblasts in this model to evaluate its role in improving fibroblasts dysfunction induced by HG and investigate its molecular mechanism. It was proven in this study that the impaired migration of fibroblasts induced by high glucose could be remarkably enhanced by coculture with MNC-QQ cells. PDGF B is known to play important roles in fibroblasts migration. Quantitative PCR revealed that MNC-QQ cells enhanced the gene expressions of PDGF B in fibroblasts under HG. Taken with these results, our data suggested a possibility that MNC-QQ cells accelerate wound healing via improving the fibroblasts migration and promote the gene expressions of PDGF B under diabetic conditions.
Collapse
Affiliation(s)
- Sen Jiang
- Division of Regenerative Therapy, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Rie Ito-Hirano
- Division of Regenerative Therapy, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Center for Genomic and Regenerative Medicine, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Tsubame Nishikai-Yan Shen
- Division of Regenerative Therapy, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Plastic and Reconstructive Surgery, School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Satoshi Fujimura
- Division of Regenerative Therapy, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Hiroshi Mizuno
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Plastic and Reconstructive Surgery, School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Rica Tanaka
- Division of Regenerative Therapy, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Department of Plastic and Reconstructive Surgery, School of Medicine, Juntendo University, 2-1-1, Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
- Correspondence:
| |
Collapse
|
9
|
Tobita M, Masubuchi Y, Ogata Y, Mitani A, Kikuchi T, Toriumi T, Montenegro Raudales JL, Mizuno H, Suzuki Y, Wakana K, Yoneda H, Kamijo R, Kino-oka M, Morio T, Okada K, Murakami S, Honda M. Study protocol for periodontal tissue regeneration with a mixture of autologous adipose-derived stem cells and platelet rich plasma: A multicenter, randomized, open-label clinical trial. Regen Ther 2022; 21:436-441. [PMID: 36274681 PMCID: PMC9576627 DOI: 10.1016/j.reth.2022.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 09/12/2022] [Accepted: 09/25/2022] [Indexed: 11/11/2022] Open
Abstract
Introduction Adipose-derived stem cells (ASCs) secrete various growth factors to promote wound healing and to regenerate various tissues, such as bone, cartilage, and fat tissue. Subcutaneous adipose tissue is a considerable cell source in clinical practice and can be collected relatively easily and safely under local anesthesia. Moreover, platelet-rich plasma (PRP), a plasma component containing many platelets purified by centrifuging the collected blood, also promotes wound healing. PRP can be easily gelled and is therefore attracting attention as a scaffolding material for transplanted cells. The usefulness of a mixture of ASCs and PRP for periodontal tissue regeneration has been in vitro demonstrated in our previous study. The aim of this study is to present the protocol of translation of tissue regeneration with ASCs and PRP into practical use, evaluating its efficacy. Methods This study is a multicenter, randomized, open-label comparative clinical trial. Fifteen patients will be randomly assigned to the treatment with mixture of ASCs and PRP or enamel matrix derivate administration into periodontal tissue defects. Increase in height of new alveolar bone in the transplanted area will be evaluated. The evaluation will be performed using dental radiographs after 36 weeks of transplantation. Occurrence of adverse events will be evaluated as secondary outcome. Results This clinical study was initiated after meeting the regulations to be complied with, including ethical review and regulatory notifications. Conclusions If effective, this cell therapy using autologous mesenchymal stem cells can represent a useful medical technology for regeneration of periodontal defects.
Collapse
Affiliation(s)
- Morikuni Tobita
- Department of Oral and Maxillofacial Surgery, Juntendo University Hospital, 3-1-3 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan,Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan,Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan,Clinical Trial and Research Center, Juntendo University Hospital, 3-1-3 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan,Corresponding author. Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan. Fax: +81 3 5802 1715.
| | - Yosuke Masubuchi
- Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan
| | - Yorimasa Ogata
- Department of Periodontology, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakae-cho Nishi, Matsudo, Chiba 271-8587, Japan
| | - Akio Mitani
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, 2-11 Suemoridori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Takeshi Kikuchi
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, 2-11 Suemoridori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Taku Toriumi
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumotocho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan,Faculty of Rehabilitation, Kyushu Nutrition Welfare University, 1-5-1 Kuzuharatakamatsu, Kokuraminami-ku, Kitakyushu, Fukuoka 800-0298, Japan
| | - Jorge Luis Montenegro Raudales
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumotocho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan
| | - Yuki Suzuki
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, 2-11 Suemoridori, Chikusa-ku, Nagoya, Aichi 464-8651, Japan
| | - Keiko Wakana
- Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan
| | - Hikari Yoneda
- Clinical Trial and Research Center, Juntendo University Hospital, 3-1-3 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Reika Kamijo
- Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo, Tokyo 1138421, Japan
| | - Masahiro Kino-oka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Kiyoshi Okada
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shinya Murakami
- Department of Periodontology, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masaki Honda
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumotocho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan
| |
Collapse
|
10
|
Sunaga A, Hikoso S, Tamaki S, Yano M, Hayashi T, Oeun B, Kida H, Sotomi Y, Dohi T, Okada K, Mizuno H, Nakatani D, Yamada T, Yasumura Y, Sakata Y. Association between prognosis and the use of angiotensin-converting enzyme inhibitors and/or angiotensin II receptor blocker in frail patients with heart failure with preserved ejection fraction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The effectiveness of angiotensin-converting enzyme inhibitors (ACE-I) and angiotensin II receptor blockers (ARB) has not been demonstrated in patients with heart failure with preserved ejection fraction (HFpEF). We recently reported significant interaction between the use of ACE-I and/or ARB (ACE-I/ARB) and frailty on prognosis in patients with HFpEF.
Purpose
In the present study, we examined the association between ACE-I/ARB and prognosis in patients with HFpEF stratified by the presence or absence of frailty.
Methods
We examined the association between the use of ACE-I/ARB and prognosis according to the presence (Clinical Frailty Scale (CFS) ≥5) or absence (CFS ≤4) of frailty in patients with HFpEF in a post-hoc analysis of registry data. Primary endpoint was the composite of all-cause mortality and heart failure admission. Secondary endpoints were all-cause mortality and heart failure admission.
Results
Of 1059 patients, median age was 83 years and 45% were male. Kaplan-Meier analysis showed that the risk of composite endpoint (log-rank P=0.001) and all-cause death (log-rank P=0.005) in patients with ACE-I/ARB was lower in those with CFS ≥5, but similar between patients with and without ACE-I/ARB in patients with CFS ≤4 (composite endpoint: log-rank P=0.830; all-cause death: log-rank P=0.192). In a multivariable Cox proportional hazards model, use of ACE-I/ARB was significantly associated with lower risk of the composite endpoint (hazard ratio = 0.52, 95% CI: 0.33–0.83, P=0.005) and heart failure admission (hazard ratio = 0.45, 95% CI: 0.25–0.83, P=0.010) in patients with CFS ≥5, but not in patients with CFS ≤4 (composite endpoint: hazard ratio = 1.41, 95% CI: 0.99–2.02, P=0.059; heart failure admission: hazard ratio = 1.43, 95% CI: 0.94–2.18, P=0.091). The association between ACE-I or ARB and prognosis did not significantly differ by CFS (CFS ≤4: log-rank P=0.562; CFS ≥5: log-rank P=0.100, for with ACE-I vs. ARB, respectively). Adjusted HRs for CFS 1–4 were higher than 1.0, but were less than 1.0 at CFS 5.
Conclusions
In patients with HFpEF, use of ACE-I/ARB was associated with better prognosis in patients with frailty as assessed with the CFS, but not in those without frailty.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Roche
Collapse
Affiliation(s)
- A Sunaga
- Osaka University Graduate School of Medicine , Suita , Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine , Suita , Japan
| | - S Tamaki
- Osaka General Medical Center, Cardiology , Osaka , Japan
| | - M Yano
- Osaka Rosai Hospital , Sakai , Japan
| | - T Hayashi
- Osaka Police Hospital , Osaka , Japan
| | - B Oeun
- Osaka University Graduate School of Medicine , Suita , Japan
| | - H Kida
- Osaka University Graduate School of Medicine , Suita , Japan
| | - Y Sotomi
- Osaka University Graduate School of Medicine , Suita , Japan
| | - T Dohi
- Osaka University Graduate School of Medicine , Suita , Japan
| | - K Okada
- Osaka University Graduate School of Medicine , Suita , Japan
| | - H Mizuno
- Osaka University Graduate School of Medicine , Suita , Japan
| | - D Nakatani
- Osaka University Graduate School of Medicine , Suita , Japan
| | - T Yamada
- Osaka General Medical Center, Cardiology , Osaka , Japan
| | - Y Yasumura
- Amagasaki Central Hospital, Cardiology , Amagasaki , Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine , Suita , Japan
| |
Collapse
|
11
|
Sunaga A, Tanaka N, Masuda M, Watanabe T, Kida H, Oeun B, Sato T, Sotomi Y, Dohi T, Okada K, Mizuno H, Nakatani D, Hikoso S, Inoue K, Sakata Y. Premature atrial contraction on Holter electrocardiogram predicts the recurrence of atrial fibrillation after catheter ablation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
It is important to detect the recurrence of atrial fibrillation (AF) after catheter ablation (CA) early, but the method of detection has not been established. The purpose of this study is to determine whether 24-h Holter electrocardiogram (ECG) can predict the recurrence of AF after CA.
Methods
We studied 336 patients of 497 patients enrolled in EARNEST-PVI trial to investigate whether the total number of premature atrial contraction (PAC) and the maximum number of PAC run by 24-h Holter ECG at 6 months after CA predicted AF recurrence after 6 months. We excluded 86 patients with recurrence by 6 months after CA and 75 patients without Holter ECG at 6 months after CA.
Results
Median age was 66 years, male were 77% and median follow-up period was 1138 days. Receiver operating characteristic curve analysis identified the total number of PAC ≥270 beats and the maximum number of PAC run ≥8 beats as the optimal cutoff for prediction of AF recurrence. Kaplan-Meier analysis showed patients with the total number of PAC ≥270 beats had more frequent AF recurrence than those without (Kaplan-Meier estimated 3-year AF recurrence rate 34% vs. 17%, Log-rank P=0.001) and patients with the maximum number of PAC run ≥8 beats had more frequent AF recurrence than those without (Kaplan-Meier estimated 3-year AF recurrence rate 33% vs. 20%, Log-rank P=0.006). Multivariate analysis revealed that the total number of PAC ≥270 beats and the maximum number of PAC run were significantly associated with AF recurrence (hazard ratio [95% confidence interval] 1.83 [1.16–2.91], P=0.01 and 1.01 [1.01–1.02], P=0.001, respectively)
Conclusion
The total number of PAC and the maximum number of PAC run on the Holter ECG may be useful in predicting AF recurrence after CA.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- A Sunaga
- Osaka University Graduate School of Medicine , Suita , Japan
| | - N Tanaka
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - M Masuda
- Kansai Rosai Hospital , Amagasaki , Japan
| | - T Watanabe
- Osaka General Medical Center, Cardiology , Osaka , Japan
| | - H Kida
- Osaka University Graduate School of Medicine , Suita , Japan
| | - B Oeun
- Osaka University Graduate School of Medicine , Suita , Japan
| | - T Sato
- Osaka University Graduate School of Medicine , Suita , Japan
| | - Y Sotomi
- Osaka University Graduate School of Medicine , Suita , Japan
| | - T Dohi
- Osaka University Graduate School of Medicine , Suita , Japan
| | - K Okada
- Osaka University Graduate School of Medicine , Suita , Japan
| | - H Mizuno
- Osaka University Graduate School of Medicine , Suita , Japan
| | - D Nakatani
- Osaka University Graduate School of Medicine , Suita , Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine , Suita , Japan
| | - K Inoue
- National Hospital Organization Osaka National Hospital , Osaka , Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine , Suita , Japan
| |
Collapse
|
12
|
Kiyosawa A, Yonemaru JI, Mizuno H, Kanamori H, Wu J, Kawahigashi H, Goto K. Fine mapping of Rf5 region for a sorghum fertility restorer gene and microsynteny analysis across grass species. Breed Sci 2022; 72:141-149. [PMID: 36275935 PMCID: PMC9522528 DOI: 10.1270/jsbbs.21057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/20/2021] [Indexed: 06/16/2023]
Abstract
Cytoplasmic male sterility (CMS) is widely used to control pollination in the production of commercial F1 hybrid seed in sorghum. So far, 6 major fertility restorer genes, Rf1 to Rf6, have been reported in sorghum. Here, we fine-mapped the Rf5 locus on sorghum chromosome 5 using descendant populations of a 'Nakei MS-3A' × 'JN43' cross. The Rf5 locus was narrowed to a 140-kb region in BTx623 genome (161-kb in JN43) with 16 predicted genes, including 6 homologous to the rice fertility restorer Rf1 (PPR.1 to PPR.6). These 6 homologs have tandem pentatricopeptide repeat (PPR) motifs. Many Rf genes encode PPR proteins, which bind RNA transcripts and modulate gene expression at the RNA level. No PPR genes were detected at the Rf5 locus on the corresponding homologous chromosome of rice, foxtail millet, or maize, so this gene cluster may have originated by chromosome translocation and duplication after the divergence of sorghum from these species. Comparison of the sequences of these genes between fertile and CMS lines identified PPR.4 as the most plausible candidate gene for Rf5.
Collapse
Affiliation(s)
- Atsushi Kiyosawa
- Nagano Animal Industry Experiment Station, 10931-1 Kataoka, Shiojiri, Nagano 399-0711, Japan
| | - Jun-ichi Yonemaru
- Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Hiroshi Mizuno
- Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Hiroyuki Kanamori
- Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Jianzhong Wu
- Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Hiroyuki Kawahigashi
- Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Kazumi Goto
- Nagano Animal Industry Experiment Station, 10931-1 Kataoka, Shiojiri, Nagano 399-0711, Japan
- Nagano Agricultural Development Public Corporation, Kami-Ina Branch, 3497 Arai, Ina, Nagano 396-8666, Japan
| |
Collapse
|
13
|
Tanaka R, Fujimura S, Kado M, Fukuta T, Arita K, Hirano-Ito R, Mita T, Watada H, Kato Y, Miyauchi K, Mizuno H. Phase I/IIa Feasibility Trial of Autologous Quality- and Quantity-Cultured Peripheral Blood Mononuclear Cell Therapy for Non-Healing Extremity Ulcers. Stem Cells Transl Med 2022; 11:146-158. [PMID: 35298656 PMCID: PMC8929435 DOI: 10.1093/stcltm/szab018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 10/24/2021] [Indexed: 11/24/2022] Open
Abstract
Non-healing wounds are among the main causes of morbidity and mortality. We recently described a novel, serum-free ex vivo expansion system, the quantity and quality culture system (QQc), which uses peripheral blood mononuclear cells (PBMNCs) for effective and noninvasive regeneration of tissue and vasculature in murine and porcine models. In this prospective clinical study, we investigated the safety and efficacy of QQ-cultured peripheral blood mononuclear cell (MNC-QQ) therapy for chronic non-healing ischemic extremity wounds. Peripheral blood was collected from 9 patients with 10 chronic (>1 month) non-healing wounds (8 males, 1 female; 64-74 years) corresponding to ischemic extremity ulcers. PBMNCs were isolated and cultured using QQc. Within a 20-cm area surrounding the ulcer, 2 × 107 cells were injected under local anesthesia. Wound healing was monitored photometrically every 2 weeks. The primary endpoint was safety, whereas the secondary endpoint was efficacy at 12-week post-injection. All patients remained ambulant, and no deaths, other serious adverse events, or major amputations were observed for 12 weeks after cell transplantation. Six of the 10 cases showed complete wound closure with an average wound closure rate of 73.2% ± 40.1% at 12 weeks. MNC-QQ therapy increased vascular perfusion, skin perfusion pressure, and decreased pain intensity in all patients. These results indicate the feasibility and safety of MNC-QQ therapy in patients with chronic non-healing ischemic extremity wounds. As the therapy involves transplanting highly vasculogenic cells obtained from a small blood sample, it may be an effective and highly vasculogenic strategy for limb salvage.
Collapse
Affiliation(s)
- Rica Tanaka
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Satoshi Fujimura
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Makiko Kado
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Taro Fukuta
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Kayo Arita
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Rie Hirano-Ito
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Center for Genomic and Regenerative Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomoya Mita
- Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hirotaka Watada
- Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoshiteru Kato
- Department of Internal Medicine, Division of Cardiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Katsumi Miyauchi
- Department of Internal Medicine, Division of Cardiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
14
|
Mizuno H, Suzuki H, Mimura M, Fukumoto M, Sato T, Kida T, Ikeda T. Three cases of macular hole that occurred in inferior scleral staphyloma associated with tilted disc syndrome: a case series. J Med Case Rep 2022; 16:36. [PMID: 35090537 PMCID: PMC8800225 DOI: 10.1186/s13256-022-03252-7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 12/30/2021] [Indexed: 11/18/2022] Open
Abstract
Background The objective is to examine the clinical characteristics of three patients with macular hole that occurred in inferior posterior staphyloma associated with tilted disc syndrome. Case presentations This study involved three eyes of three Japanese female patients (mean age 76.0 years, range 73–84 years) with macular hole occurring in inferior posterior staphyloma associated with tilted disc syndrome. One of the three eyes was slightly myopic, while the other two eyes were highly myopic. In all three eyes, the macular hole was found to be located in or near the margin of the inferior posterior staphyloma. In one eye, the extent of retinoschisis was rather broad in the margin of the macular hole, and another eye had a history of treatment for choroidal neovascularization. As surgical treatment, the internal limiting membrane in areas surrounding the macular hole was detached after producing artificial posterior vitreous detachment, and a gas tamponade was performed. It was found during surgery that the extensibility of the retina in the margin of the MH was decreased in the three eyes as compared with a usual macular hole. Although the macular hole was successfully closed in all three cases post surgery, the layer structure of the central retina was poorly repaired in all three cases and choroidal neovascularization remained in one case. In all three cases, corrected visual acuity remained at 0.3–0.5 post surgery. Conclusions Our findings showed poor improvement of visual acuity in all three cases post surgery, even if closure of the macular hole is achieved, thus suggesting that in cases of macular hole associated with tilted disc syndrome and inferior posterior staphyloma, the presence of macular dysfunction existing prior to the onset of macular hole affects visual prognosis.
Collapse
Affiliation(s)
- Hiroshi Mizuno
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Hiroyuki Suzuki
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan.,Department of Ophthalmology, Hirakata City Hospital, Hirakata, Osaka, Japan
| | - Masashi Mimura
- Department of Ophthalmology, First Towakai Hospital, Takatsuki, Osaka, Japan
| | | | - Takaki Sato
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical and Pharmaceutical University, Takatsuki, Osaka, Japan
| | - Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Kaisei Hospital, 1-6-10 Miyahara Yodogawa-ku, Osaka, 532-0003, Japan.
| |
Collapse
|
15
|
Nishikai-Yan Shen T, Kado M, Hagiwara H, Fujimura S, Mizuno H, Tanaka R. MMP9 secreted from mononuclear cell quality and quantity culture mediates STAT3 phosphorylation and fibroblast migration in wounds. Regen Ther 2021; 18:464-471. [PMID: 34805452 PMCID: PMC8581454 DOI: 10.1016/j.reth.2021.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 06/08/2021] [Revised: 09/21/2021] [Accepted: 10/20/2021] [Indexed: 01/13/2023] Open
Abstract
Introduction Intractable ulcers may ultimately lead to amputation. To promote wound healing, researchers developed a serum-free ex vivo peripheral blood mononuclear cell quality and quantity culture (MNC-QQc) as a source for cell therapy. In mice, pigs, and even humans, cell therapy with MNC-QQc reportedly yields a high regenerative efficacy. However, the mechanism of wound healing by MNC-QQc cells remains largely unknown. Hence, using an in vitro wound healing model, this study aimed to investigate MNC-QQc cells and the migratory potential of dermal fibroblasts. Methods After separation from a 50 mL blood sample from healthy individuals, mononuclear cells were cultured for 7 days in a serum-free ex vivo expansion system with five different cytokines (MNC-QQc method). The effects of MNC-QQc cells on human dermal fibroblast migration were observed by scratch assay. An angiogenesis array screened the MNC-QQc cell supernatant for proteins related to wound healing. Finally, fibroblast migration was confirmed by observing the intracellular signal transduction pathways via Western blot. Results The migration of fibroblasts co-cultured with MNC-QQc cells increased by matrix metallopeptidase-9 (MMP9) secretion, as suggested by the angiogenesis array. Furthermore, the phosphorylation of signal transducer and activator of transcription 3 (STAT3) in fibroblast/MNC-QQc cell co-culture and fibroblast culture with added recombinant human MMP9 protein increased. When fibroblasts were cultured with either an MMP9 inhibitor or a STAT3 inhibitor, both fibroblast migration and STAT3 phosphorylation were significantly suppressed. Conclusions MNC-QQc cells promote wound healing by the secretion of MMP9, which induces fibroblast migration via the STAT3 signaling pathway.
Collapse
Key Words
- BM, Bone marrow
- BMMNC, Bone marrow mononuclear cells
- Cell culture
- Cell therapy
- DMEM, Dulbecco's modified Eagle's medium
- EPC, Endothelial progenitor cells
- FBS, Fetal bovine serum
- HRP, Horseradish peroxidase
- MMP, Matrix metallopeptidase
- MMP9
- MNC, Monocyte cell
- MNC-QQc
- PB, Peripheral blood
- PBMNC, Peripheral blood monocyte cells
- PBS, Phosphate-buffered saline
- QQc, Quality and quantity culture
- SE, Standard error
- VEGF, Vascular endothelial growth factor
- Wound healing
Collapse
Affiliation(s)
- Tsubame Nishikai-Yan Shen
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Makiko Kado
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroko Hagiwara
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Center for Genomic and Regenerative Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Satoshi Fujimura
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University School of Medicine, Tokyo, Japan.,Center for Genomic and Regenerative Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Rica Tanaka
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University School of Medicine, Tokyo, Japan.,Center for Genomic and Regenerative Medicine, Juntendo University School of Medicine, Tokyo, Japan
| |
Collapse
|
16
|
Josh F, Soekamto TH, Adriani JR, Jonatan B, Mizuno H, Faruk M. The Combination of Stromal Vascular Fraction Cells and Platelet-Rich Plasma Reduces Malondialdehyde and Nitric Oxide Levels in Deep Dermal Burn Injury. J Inflamm Res 2021; 14:3049-3061. [PMID: 34267534 PMCID: PMC8275197 DOI: 10.2147/jir.s318055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/25/2021] [Indexed: 12/22/2022] Open
Abstract
Introduction Thermal burns release reactive oxygen species, which cause profound systemic and local changes. Stromal vascular fraction cells (SVFs) combined with platelet-rich plasma accelerate burn wound healing. This study investigated the effect of a combination of locally injected SVFs and PRP on malondialdehyde (MDA) and nitric oxide (NO) serum and tissue levels in a deep dermal burn model in Wistar rats. Methods Thirty-six adult Wistar rats weighing between 150 and 250 grams were used in this study to establish a deep dermal degree burn wound model. They were randomly divided into 4 groups: locally injected the combination SVFs and PRP, the Vaseline group, the placebo group, and healthy Wistar rats (the normal control group). MDA and NO levels in blood serum and burn wound tissue were measured at 8, 24, and 48 hours. Data were analyzed with one-way ANOVA followed by multiple comparisons tests and regression tests. Results Local injection of SVFs and PRP in combination affected blood MDA, tissue MDA, blood NO and tissue NO levels, with reductions of 0.257µmol/L, 0.427 µmol/L, 21.78nmol/mg, and 23.777nmol/mg, respectively. Injection of SVFs and PRP in combination reduced tissue MDA levels by 1.282 times, NO blood levels by 2.305, and NO tissue levels by 2.377 times compared to Vaseline application. Conclusion The combination of SVFs and PRP undeniably reduced the MDA and NO levels in blood and tissue compared to those in the Vaseline and placebo groups. The injection of these two preparations in combination inhibited the local and systemic stress oxidative response, as illustrated by the decreased MDA and NO levels in blood serum and tissue.
Collapse
Affiliation(s)
- Fonny Josh
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, South Sulawesi, Indonesia.,Department of Plastic and Reconstructive Surgery, Wahidin Sudirohusodo Hospital, Makassar, South Sulawesi, Indonesia
| | | | - Januar Rizky Adriani
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, South Sulawesi, Indonesia
| | - Billy Jonatan
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, South Sulawesi, Indonesia
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University, Tokyo, Japan
| | - Muhammad Faruk
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, South Sulawesi, Indonesia
| |
Collapse
|
17
|
Josh F, Soekamto TH, Adriani JR, Jonatan B, Mizuno H, Faruk M. The Combination of Stromal Vascular Fraction Cells and Platelet-Rich Plasma Reduces Malondialdehyde and Nitric Oxide Levels in Deep Dermal Burn Injury. J Inflamm Res 2021; Volume 14:3049-3061. [DOI: https:/doi.org/10.2147/jir.s318055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
18
|
Hirokawa T, Oosuka S, Tonari M, Mizuno H, Kida T, Inoue A, Ashida A, Ikeda T. A Case of Presumed Dyskeratosis Congenita Causing Severe Retinal Vascular Occlusion. Case Rep Ophthalmol 2021; 12:344-349. [PMID: 34054482 PMCID: PMC8136308 DOI: 10.1159/000513484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/27/2020] [Indexed: 11/28/2022] Open
Abstract
Dyskeratosis congenita (DKC) is a rare, multisystem, bone marrow failure disease characterized by abnormalities such as in the skin, mucosa, nervous system, and lungs. Here we report a rare case of presumed DKC causing total retinal detachment in the right eye and severe peripheral retinal vascular occlusion in the left eye. A 3-year-old boy was presented with vitreous hemorrhage and total retinal detachment in the right eye and was scheduled to undergo vitreous surgery in the right eye and detailed ophthalmologic examination of the left eye under general anesthesia. Since a systemic examination revealed anemia and marked thrombocytopenia, he underwent a detailed pediatric examination. Although genetic testing revealed no significant pathologic mutations, the presence of shortened telomere length and other clinical findings suggested the possibility of DKC. His right eye had severe proliferative vitreoretinopathy, and retinal reattachment was not achieved with vitreous surgery, thus resulting in phthisis bulbi. The left eye showed a wide retinal avascular area in the temporal retina, retinal neovascularization, and hard exudates on fluorescein fundus angiography and was treated with laser photocoagulation using a binocular indirect ophthalmoscopic photocoagulator. Following laser surgery, the new blood vessels regressed, and the visual acuity was maintained at 1.0. The findings in this rare case indicate that DKC can cause severe retinal vascular occlusion, thus leading to vitreous hemorrhage and retinal detachment. Therefore, early detection with fundus examination and early treatment with photocoagulation are important.
Collapse
Affiliation(s)
- Takahisa Hirokawa
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| | - Shou Oosuka
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| | - Masahiro Tonari
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| | - Hiroshi Mizuno
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| | - Akiko Inoue
- Department of Pediatrics, Osaka Medical College, Takatsuki-City, Japan
| | - Akira Ashida
- Department of Pediatrics, Osaka Medical College, Takatsuki-City, Japan
| | - Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
| |
Collapse
|
19
|
Tanaka R, Inoue H, Ishikawa T, Ichikawa Y, Sato R, Shimizu A, Mizuno H. Use of Sponge-Foam Inserts in Compression Bandaging of Non-Healing Venous Leg Ulcers. Ann Vasc Dis 2021; 14:46-51. [PMID: 33786099 PMCID: PMC7991709 DOI: 10.3400/avd.oa.20-00159] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/28/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Venous leg ulcers (VLUs) caused by chronic venous insufficiency are difficult to treat. Outcomes after compression therapy and the current standard of care often used in conjunction with other options vary widely. We examined the effects of foam inserts on sub-bandage pressures in patients with VLUs and compared use of foam inserts in elastic and inelastic compression bandaging. Methods: Six patients (≥20 years old) with VLUs and skin perfusion pressure >40 mmHg were included. Each patient underwent weekly treatment regimens of debridement, dressing changes, and dual sponge-insert application followed by elastic (n=3) or inelastic (n=3) compression bandaging. The median resting sub-bandage pressures of the ulcer beds, wound sizes, and healing percentages were recorded. Wound beds were biopsied before and after treatment for histological assessment. Nine healthy volunteers served as controls during preliminary testing. Results: With proper sub-bandage pressures (>35 mmHg), the average healing time was 88.0±66 days, which was shorter than anticipated (i.e., ≥6 months). Combining large and local sponge-foam inserts increased sub-bandage pressures regardless of the compression bandage selected, with marked improvements seen in deeper wounds. Conclusion: Layering one or two sponge-foam inserts beneath compression bandages facilitates uniform and optimal wound-bed pressure, which accelerates the healing of VLUs.
Collapse
Affiliation(s)
- Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Sapporo, Hokkaido, Japan
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | | | | | - Yuichi Ichikawa
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Sapporo, Hokkaido, Japan
| | - Rumiko Sato
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Sapporo, Hokkaido, Japan
| | - Azusa Shimizu
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Sapporo, Hokkaido, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Sapporo, Hokkaido, Japan
| |
Collapse
|
20
|
Sato Y, Mizuno H, Matsumoto N, Ikegaya Y. Subthreshold membrane potential dynamics of posterior parietal cortical neurons coupled with hippocampal ripples. Physiol Int 2021. [PMID: 33769956 DOI: 10.1556/2060.2021.00001] [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: 03/06/2020] [Accepted: 11/17/2020] [Indexed: 11/19/2022]
Abstract
During behavioral states of immobility, sleep, and anesthesia, the hippocampus generates high-frequency oscillations called ripples. Ripples occur simultaneously with synchronous neuronal activity in the neocortex, known as slow waves, and contribute to memory consolidation. During these ripples, various neocortical regions exhibit modulations in spike rates and local field activity irrespective of whether they receive direct synaptic inputs from the hippocampus. However, little is known about the subthreshold dynamics of the membrane potentials of neocortical neurons during ripples. We patch-clamped layer 2/3 pyramidal cells in the posterior parietal cortex (PPC), a neocortical region that is involved in allocentric spatial representation of behavioral exploration and sequential series of relevant action potentials during ripples. We simultaneously monitored the membrane potentials of post hoc-identified PPC neurons and the local field potentials of the hippocampus in anesthetized mice. More than 50% of the recorded PPC neurons exhibited significant depolarizations and/or hyperpolarizations during ripples. Histological inspections of the recorded neurons revealed that the ripple-modulated PPC neurons were distributed in the PPC in a spatially non-biased fashion. These results suggest that hippocampal ripples are widely but selectively associated with the subthreshold dynamics of the membrane potentials of PPC neurons even though there is no monosynaptic connectivity between the hippocampus and the PPC.
Collapse
Affiliation(s)
- Y Sato
- 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - H Mizuno
- 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - N Matsumoto
- 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Y Ikegaya
- 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
- 2Institute for AI and Beyond, The University of Tokyo, Tokyo 113-0033, Japan
- 3Center for Information and Neural Networks, National Institute of Information and Communications Technology, Suita City, Osaka, 565-0871, Japan
| |
Collapse
|
21
|
Tanaka R, Ito-Hirano R, Fujimura S, Arita K, Hagiwara H, Mita T, Itoh M, Kawaji H, Ogawa T, Watada H, Masuda H, Asahara T, Mizuno H. Ex vivo conditioning of peripheral blood mononuclear cells of diabetic patients promotes vasculogenic wound healing. Stem Cells Transl Med 2021; 10:895-909. [PMID: 33599112 PMCID: PMC8133343 DOI: 10.1002/sctm.20-0309] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/16/2020] [Accepted: 01/07/2021] [Indexed: 12/11/2022] Open
Abstract
The quality and quantity of endothelial progenitor cells (EPCs) are impaired in patients with diabetes mellitus patients, leading to reduced tissue repair during autologous EPC therapy. This study aimed to address the limitations of the previously described serum-free Quantity and Quality Control Culture System (QQc) using CD34+ cells by investigating the therapeutic potential of a novel mononuclear cell (MNC)-QQ. MNCs were isolated from 50 mL of peripheral blood of patients with diabetes mellitus and healthy volunteers (n = 13 each) and subjected to QQc for 7 days in serum-free expansion media with VEGF, Flt-3 ligand, TPO, IL-6, and SCF. The vascular regeneration capability of MNC-QQ cells pre- or post-QQc was evaluated with an EPC colony-forming assay, FACS, EPC culture, tube formation assay, and quantitative real time PCR. For in vivo assessment, 1 × 104 pre- and post-MNC-QQc cells from diabetic donors were injected into a murine wound-healing model using Balb/c nude mice. The percentage of wound closure and angio-vasculogenesis was then assessed. This study revealed vasculogenic, anti-inflammatory, and wound-healing effects of MNC-QQ therapy in both in vitro and in vivo models. This system addresses the low efficiency and efficacy of the current naïve MNC therapy for wound-healing in diabetic patients. As this technique requires a simple blood draw, isolation, and peripheral blood MNC suspension culture for only a week, it can be used as a simple and effective outpatient-based vascular and regenerative therapy for patients with diabetes mellitus.
Collapse
Affiliation(s)
- Rica Tanaka
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Rie Ito-Hirano
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Center for Genomic and Regenerative Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Satoshi Fujimura
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kayo Arita
- Division of Regenerative Therapy, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hiroko Hagiwara
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Center for Genomic and Regenerative Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomoya Mita
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Masayoshi Itoh
- RIKEN Preventive Medicine and Diagnosis Innovation Program, Wako, Japan
| | - Hideya Kawaji
- RIKEN Preventive Medicine and Diagnosis Innovation Program, Wako, Japan.,Preventive Medicine and Applied Genomics Unit, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.,Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Takasuke Ogawa
- Department of Dermatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hirotaka Watada
- Department of Metabolism & Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Haruchika Masuda
- Department of Basic Clinical Science, Division of Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Takayuki Asahara
- Department of Basic Clinical Science, Division of Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Intractable Disease Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| |
Collapse
|
22
|
Morimura N, Mizobata Y, Sugita M, Takeda S, Kiyozumi T, Shoko T, Inoue Y, Otomo Y, Sakurai A, Koido Y, Tanabe S, Okumura T, Yamasawa F, Tanaka H, Kinoshi T, Kaku K, Matsuda K, Kitamura N, Hayakawa T, Kuroda Y, Kuroki Y, Sasaki J, Oda J, Inokuchi M, Kakuta T, Arai S, Sato N, Matsuura H, Nozawa M, Osamura T, Yamashita K, Okudera H, Kawana A, Koshinaga T, Hirano S, Sugawara E, Kamata M, Tajiri Y, Kohno M, Suzuki M, Nakase H, Suehiro E, Yamase H, Otake H, Morisaki H, Ozawa A, Takahashi S, Otsuka K, Harikae K, Kishi K, Mizuno H, Nakajima H, Ueta H, Nagayama M, Kikuchi M, Yokota H, Shimazu T, Yukioka T. Medicine at mass gatherings: current progress of preparedness of emergency medical services and disaster medical response during 2020 Tokyo Olympic and Paralympic Games from the perspective of the Academic Consortium (AC2020). Acute Med Surg 2021; 8:e626. [PMID: 33552526 PMCID: PMC7852170 DOI: 10.1002/ams2.626] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 12/23/2020] [Indexed: 01/08/2023] Open
Abstract
Mass gatherings are events characterized by “the concentration of people at a specific location for a specific purpose over a set period of time that have the potential to strain the planning and response resources of the host country or community.” Previous reports showed that, as a result of the concentration of people in the limited area, injury and illness occurred due to several factors. The response plan should aim to provide timely medical care to the patients and to reduce the burden on emergency hospitals, and to maintain a daily emergency medical services system for residents of the local area. Although a mass gathering event will place a significant burden on the local health‐care system, it can provide the opportunity for long‐term benefits of public health‐care and improvement of daily medical service systems after the end of the event. The next Olympic and Paralympic Games will be held in Tokyo, during which mass gatherings will occur on a daily basis in the context of the coronavirus disease (COVID‐19) epidemic. The Academic Consortium on Emergency Medical Services and Disaster Medical Response Plan during the Tokyo Olympic and Paralympic Games in 2020 (AC2020) was launched 2016, consisting of 28 academic societies in Japan, it has released statements based on assessments of medical risk and publishing guidelines and manuals on its website. This paper outlines the issues and countermeasures for emergency and disaster medical care related to the holding of this big event, focusing on the activities of the academic consortium.
Collapse
Affiliation(s)
- Naoto Morimura
- Japanese Association for Acute Medicine Tokyo Japan.,The Scientific Research Group of Ministry of Health, Labor and Welfare of Japan Tokyo Japan
| | | | | | - Satoshi Takeda
- The Education and Training Working Group of AC2020 Tokyo Japan.,AED Foundation of Japan Tokyo Japan
| | | | - Tomohisa Shoko
- The Education and Training Working Group of AC2020 Tokyo Japan
| | - Yoshiaki Inoue
- The Education and Training Working Group of AC2020 Tokyo Japan
| | - Yasuhiro Otomo
- The Scientific Research Group of Ministry of Health, Labor and Welfare of Japan Tokyo Japan.,Japanese Association for the Surgery of Trauma Tokyo Japan
| | | | - Yuichi Koido
- Japanese Association for Disaster Medicine Tokyo Japan
| | - Seizan Tanabe
- Japanese Association for Disaster Medicine Tokyo Japan
| | - Tetsu Okumura
- Japanese Society for Clinical Toxicology Tokyo Japan
| | | | | | - Tomoya Kinoshi
- Japanese Association of First Aid and Emergency Medicine Kyoto Japan
| | - Koki Kaku
- Japanese Society for Infection Prevention and Control Tokyo Japan
| | - Kiyoshi Matsuda
- Japan Prehospital Trauma Evaluation and Care Council Tokyo Japan
| | | | | | - Yasuhiro Kuroda
- Japanese Society of Intensive Care Medicine Tokyo Japan.,Japanese Society of Reanimatology Ube Japan
| | - Yumiko Kuroki
- Japanese Society for Clinical Toxicology Tokyo Japan
| | - Junichi Sasaki
- Japanese Society for Burn Injuries Tokyo Japan.,Japanese Association for Infectious Diseases Tokyo Japan
| | - Jun Oda
- Japanese Society for Burn Injuries Tokyo Japan
| | | | | | | | - Noriaki Sato
- Japanese Association for Emergency Nursing Tokyo Japan
| | | | | | | | | | - Hiroshi Okudera
- Japanese Association of First Aid and Emergency Medicine Kyoto Japan
| | - Akihiko Kawana
- Japanese Association for Infectious Diseases Tokyo Japan
| | | | | | - Erisa Sugawara
- Japanese Society for Infection Prevention and Control Tokyo Japan
| | | | | | | | | | | | | | | | | | | | - Akiko Ozawa
- Japanese Society of Anesthesiologists Kobe Japan
| | - Sho Takahashi
- Japanese Society of Psychiatry and Neurology Tokyo Japan
| | - Kotaro Otsuka
- Japan Society of Plastic and Reconstructive Surgery Tokyo Japan
| | - Kiyokazu Harikae
- Japan Prehospital Trauma Evaluation and Care Council Tokyo Japan
| | - Kazuo Kishi
- Japan Society of Plastic and Reconstructive Surgery Tokyo Japan
| | - Hiroshi Mizuno
- Japan Society of Plastic and Reconstructive Surgery Tokyo Japan
| | | | | | | | | | - Hiroyuki Yokota
- The Scientific Research Group of Ministry of Health, Labor and Welfare of Japan Tokyo Japan
| | | | | | | |
Collapse
|
23
|
Sunaga A, Yamada T, Yasumura Y, Tamaki S, Hayashi T, Yano M, Nakatani D, Mizuno H, Okada K, Kitamura T, Dohi T, Kojima T, Kida H, Hikoso S, Yasushi S. Cardiac factors as well as non-cardiac factors were associated with frailty in patients with heart failure with preserved ejection fraction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Frailty is associated with malnutrition and poor prognosis in patients with heart failure with preserved ejection fraction (HFpEF). However, the cardiac factors associated with frailty have not been fully examined in patients with HFpEF.
Purpose
The purpose of this study is to clarify the cardiac factors related to frailty in patients with HFpEF.
Methods
Of the 756 patients who registered prospective, multicenter, observational study of patients with HFpEF (PURSUIT-HFpEF) registry, 481 cases with clinical frailty score (CFS) and prognosis after discharge were examined. Frailty was defined as CFS ≥5. Outcomes were composite endpoint of all-cause death and heart failure readmission, and all-cause mortality. We compared outcomes between patients without and with frailty, and sought to identify factors which were associated with increase in clinical frailty score by the correlation analysis and linear regression analysis.
Results
Of 481 patients, 131 patients (27.2%) were frail. Male gender was less in patients with frailty than those without frailty (26.7% vs 73.3%, P<0.001). Frail patients had higher age (85.2±7.3 vs 78.7±9.4 years, P<0.001). During follow-up period of 396 [343, 697] days, composite endpoint (Kaplan-Meier event rate estimates, 77% vs. 60%; log-rank P<0.001), and all-cause mortality (Kaplan-Meier event rate estimates, 57% vs. 28%; log-rank P<0.001) was higher in patients with frailty than those without frailty. Multivariate Cox regression analysis revealed frailty was significantly and independently associated with mortality (HR=1.40, 95% CI=1.17–1.68, P<0.001). CFS was significantly correlated with age (r=0.401, P<0.001), sex (r=0.223, P<0.001), body mass index (r=−0.146, P=0.001), hemoglobin (r=−0.148, P=0.001), albumin (r=−0.222, P<0.001), left ventricular diastolic diameter (r=−0.184, P<0.001), interventricular septum thickness (r=−0.124, P=0.008), left ventricular mass (r=−0.217, P<0.001), tricuspid annular plane systolic excursion (r=−0.165, P=0.001), and tricuspid regurgitation pressure gradient (TRPG) (r=0.189, P<0.001). Multivariate linear regression analysis using these factors as covariates revealed age (standardized β: 0.337, P<0.001), sex (standardized β: 0.120, P=0.014), albumin (standardized β: −0.151, P=0.003) and TRPG (standardized β: 0.129, P=0.005) were significantly and independently associated with increase in clinical frailty score.
Conclusion
Our results suggest that not only nutritional factors but also a cardiac factor were associated with frailty, and frailty was associated with mortality in patients with HFpEF. Improvement of hemodynamics in HFpEF patients as well as improvement of nutrition might contribute to alleviation of frail in HFpEF patients.
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): Roche Diagnostics K.K.; Fuji Film Toyama Chemical Co. Ltd.
Collapse
Affiliation(s)
- A Sunaga
- Osaka University Graduate School of Medicine, Suita, Japan
| | - T Yamada
- Osaka General Medical Center, Cardiology, Osaka, Japan
| | - Y Yasumura
- Amagasaki Chuo Hospital, Cardiology, Amagasaki, Japan
| | - S Tamaki
- Osaka General Medical Center, Cardiology, Osaka, Japan
| | - T Hayashi
- Osaka Police Hospital, Cardiology, Osaka, Japan
| | - M Yano
- Osaka Rosai Hospital, Cardiology, Osaka, Japan
| | - D Nakatani
- Osaka University Graduate School of Medicine, Suita, Japan
| | - H Mizuno
- Osaka University Graduate School of Medicine, Suita, Japan
| | - K Okada
- Osaka University Graduate School of Medicine, Suita, Japan
| | - T Kitamura
- Osaka University Graduate School of Medicine, Suita, Japan
| | - T Dohi
- Osaka University Graduate School of Medicine, Suita, Japan
| | - T Kojima
- Osaka University Graduate School of Medicine, Suita, Japan
| | - H Kida
- Osaka University Graduate School of Medicine, Suita, Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Suita, Japan
| | - S Yasushi
- Osaka University Graduate School of Medicine, Suita, Japan
| |
Collapse
|
24
|
Wu YJ, Tanaka T, Komori T, Fujii M, Mizuno H, Itoh S, Takada T, Fujita E, Xu Y. Essential structural and experimental descriptors for bulk and grain boundary conductivities of Li solid electrolytes. Sci Technol Adv Mater 2020; 21:712-725. [PMID: 33209090 PMCID: PMC7594868 DOI: 10.1080/14686996.2020.1824985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/27/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
We present a computational approach for identifying the important descriptors of the ionic conductivities of lithium solid electrolytes. Our approach discriminates the factors of both bulk and grain boundary conductivities, which have been rarely reported. The effects of the interrelated structural (e.g. grain size, phase), material (e.g. Li ratio), chemical (e.g. electronegativity, polarizability) and experimental (e.g. sintering temperature, synthesis method) properties on the bulk and grain boundary conductivities are investigated via machine learning. The data are trained using the bulk and grain boundary conductivities of Li solid conductors at room temperature. The important descriptors are elucidated by their feature importance and predictive performances, as determined by a nonlinear XGBoost algorithm: (i) the experimental descriptors of sintering conditions are significant for both bulk and grain boundary, (ii) the material descriptors of Li site occupancy and Li ratio are the prior descriptors for bulk, (iii) the density and unit cell volume are the prior structural descriptors while the polarizability and electronegativity are the prior chemical descriptors for grain boundary, (iv) the grain size provides physical insights such as the thermodynamic condition and should be considered for determining grain boundary conductance in solid polycrystalline ionic conductors.
Collapse
Affiliation(s)
- Yen-Ju Wu
- Center for Materials Research by Information Integration (CMI2), Research and Services Division of Materials Data and Integrated System (Madis), National Institute for Materials Science (NIMS), Tsukuba, Japan
- International Center for Young Scientists (ICYS), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Takehiro Tanaka
- Technology Division, Innovation Promotion Sector, Panasonic Corporation, Osaka, Japan
| | - Tomoyuki Komori
- Technology Division, Innovation Promotion Sector, Panasonic Corporation, Osaka, Japan
| | - Mikiya Fujii
- Technology Division, Innovation Promotion Sector, Panasonic Corporation, Osaka, Japan
| | - Hiroshi Mizuno
- Technology Division, Innovation Promotion Sector, Panasonic Corporation, Osaka, Japan
| | - Satoshi Itoh
- Center for Materials Research by Information Integration (CMI2), Research and Services Division of Materials Data and Integrated System (Madis), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Tadanobu Takada
- Center for Materials Research by Information Integration (CMI2), Research and Services Division of Materials Data and Integrated System (Madis), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Erina Fujita
- Center for Materials Research by Information Integration (CMI2), Research and Services Division of Materials Data and Integrated System (Madis), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Yibin Xu
- Center for Materials Research by Information Integration (CMI2), Research and Services Division of Materials Data and Integrated System (Madis), National Institute for Materials Science (NIMS), Tsukuba, Japan
| |
Collapse
|
25
|
Mizuno H, Fukumoto M, Sato T, Horie T, Kida T, Oku H, Nakamura K, Jin D, Takai S, Ikeda T. Involvement of the Retinal Pigment Epithelium in the Development of Retinal Lattice Degeneration. Int J Mol Sci 2020; 21:ijms21197347. [PMID: 33027920 PMCID: PMC7583762 DOI: 10.3390/ijms21197347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/01/2020] [Accepted: 10/03/2020] [Indexed: 11/16/2022] Open
Abstract
Lattice degeneration involves thinning of the retina that occurs over time. Here we performed an immunohistological study of tissue sections of human peripheral retinal lattice degeneration to investigate if retinal pigment epithelium (RPE) cells are involved in the pathogenesis of this condition. In two cases of retinal detachment with a large tear that underwent vitreous surgery, retinal lattice degeneration tissue specimens were collected during surgery. In the obtained specimens, both whole mounts and horizontal section slices were prepared, and immunostaining was then performed with hematoxylin and antibodies against glial fibrillary acidic protein (GFAP), RPE-specific protein 65 kDa (RPE65), pan-cytokeratin (pan-CK), and CK18. Hematoxylin staining showed no nuclei in the center of the degenerative lesion, thus suggesting the possibility of the occurrence of apoptosis. In the degenerative lesion specimens, GFAP staining was observed in the center, RPE65 staining was observed in the slightly peripheral region, and pan-CK staining was observed in all areas. However, no obvious CK18 staining was observed. In a monkey retina used as the control specimen of a normal healthy retina, no RPE65 or pan-CK staining was observed in the neural retina. Our findings suggest that migration, proliferation, and differentiation of RPE cells might be involved in the repair of retinal lattice degeneration.
Collapse
Affiliation(s)
- Hiroshi Mizuno
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | - Masanori Fukumoto
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | - Takaki Sato
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | - Taeko Horie
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | - Hidehiro Oku
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
| | | | - Denan Jin
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (D.J.); (S.T.)
| | - Shinji Takai
- Department of Innovative Medicine, Graduate School of Medicine, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (D.J.); (S.T.)
| | - Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka 569-8686, Japan; (H.M.); (M.F.); (T.S.); (T.H.); (T.K.); (H.O.)
- Correspondence: ; Tel.: +81-72-684-6434; Fax: +81-72-682-0995
| |
Collapse
|
26
|
Kashihara N, Nishio T, Osonoi T, Saka Y, Imasawa T, Ohtake T, Mizuno H, Shibagaki Y, Kim H, Yajima T, Sarai N. Correction of serum potassium with sodium zirconium cyclosilicate in Japanese patients with hyperkalemia: a randomized, dose-response, phase 2/3 study. Clin Exp Nephrol 2020; 24:1144-1153. [PMID: 32779057 PMCID: PMC7599176 DOI: 10.1007/s10157-020-01937-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/29/2020] [Accepted: 07/19/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND Sodium zirconium cyclosilicate (SZC) is an oral potassium binder approved to treat hyperkalemia in adults in a number of countries, including Japan. METHODS This phase 2/3, randomized, double-blind, placebo-controlled, dose-response study (ClinicalTrials.gov: NCT03127644) was designed to determine the efficacy and safety of SZC in Japanese adults with hyperkalemia. Patients with serum potassium (sK+) concentrations ≥ 5.1- ≤ 6.5 mmol/L were randomized 1:1:1 to SZC 5 g, SZC 10 g, or placebo three times daily for 48 h (six doses total). The primary efficacy endpoint was the exponential rate of change in sK+ over 48 h. The proportion of patients with normokalemia (sK+ 3.5-5.0 mmol/L) at 48 h and adverse events (AEs) were also evaluated. RESULTS Overall, 103 patients (mean age, 73.2 years; range 50-89 years) received SZC 5 g (n = 34), SZC 10 g (n = 36), or placebo (n = 33). The exponential rate of sK+ change from 0 to 48 h versus placebo was - 0.00261 (SZC 5 g) and - 0.00496 (SZC 10 g; both P < 0.0001). At 48 h, the proportions of patients with normokalemia were 85.3%, 91.7%, and 15.2% with SZC 5 g, SZC 10 g, and placebo, respectively. No serious AEs were reported. Hypokalemia (sK+ < 3.5 mmol/L) occurred in two patients in the SZC 10 g group; normokalemia was re-established within 6 days and no treatment-related AEs were reported. CONCLUSION SZC is effective and well tolerated in Japanese patients with hyperkalemia.
Collapse
Affiliation(s)
- Naoki Kashihara
- Department of Nephrology and Hypertension, Kawasaki Medical School, Okayama, Japan
| | - Toshiki Nishio
- Nephrology Dialysis Center, Kusatsu General Hospital, Shiga, Japan
| | - Takeshi Osonoi
- Department of Internal Medicine, Nakakinen Clinic, Ibaraki, Japan
| | - Yosuke Saka
- Department of Nephrology, Kasugai Municipal Hospital, Aichi, Japan
| | | | - Takayasu Ohtake
- Department of Nephrology, Shonan Kamakura General Hospital, Kanagawa, Japan
| | | | - Yugo Shibagaki
- Division of Nephrology and Hypertension, St. Marianna University School of Medicine Hospital, Kanagawa, Japan
| | - Hyosung Kim
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan
| | - Toshitaka Yajima
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan
| | - Nobuaki Sarai
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan.
| |
Collapse
|
27
|
Mizuno H, Katagiri S, Kanamori H, Mukai Y, Sasaki T, Matsumoto T, Wu J. Evolutionary dynamics and impacts of chromosome regions carrying R-gene clusters in rice. Sci Rep 2020; 10:872. [PMID: 31964985 PMCID: PMC6972905 DOI: 10.1038/s41598-020-57729-w] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/06/2020] [Indexed: 11/17/2022] Open
Abstract
To elucidate R-gene evolution, we compared the genomic compositions and structures of chromosome regions carrying R-gene clusters among cultivated and wild rice species. Map-based sequencing and gene annotation of orthologous genomic regions (1.2 to 1.9 Mb) close to the terminal end of the long arm of rice chromosome 11 revealed R-gene clusters within six cultivated and ancestral wild rice accessions. NBS-LRR R-genes were much more abundant in Asian cultivated rice (O. sativa L.) than in its ancestors, indicating that homologs of functional genes involved in the same pathway likely increase in number because of tandem duplication of chromosomal segments and were selected during cultivation. Phylogenetic analysis using amino acid sequences indicated that homologs of paired Pikm1–Pikm2 (NBS-LRR) genes conferring rice-blast resistance were likely conserved among all cultivated and wild rice species we examined, and the homolog of Xa3/Xa26 (LRR-RLK) conferring bacterial blight resistance was lacking only in Kasalath.
Collapse
Affiliation(s)
- Hiroshi Mizuno
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 1-2, Ohwashi, Tsukuba, Ibaraki, 305-8634, Japan
| | - Satoshi Katagiri
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 1-2, Ohwashi, Tsukuba, Ibaraki, 305-8634, Japan
| | - Hiroyuki Kanamori
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 1-2, Ohwashi, Tsukuba, Ibaraki, 305-8634, Japan
| | - Yoshiyuki Mukai
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 1-2, Ohwashi, Tsukuba, Ibaraki, 305-8634, Japan
| | - Takuji Sasaki
- Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo, 156-0054, Japan
| | - Takashi Matsumoto
- Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo, 156-0054, Japan
| | - Jianzhong Wu
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 1-2, Ohwashi, Tsukuba, Ibaraki, 305-8634, Japan.
| |
Collapse
|
28
|
Kanematsu N, Mizuno H, Nakaji T, Yonai S, Matsumoto S, Inaniwa T. PO-185: Longitudinal radiochromic-film dosimetry for carbonion radiotherapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(20)30526-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
29
|
Tamakuma Y, Yamada R, Suzuki T, Kuroki T, Saga R, Mizuno H, Sasaki H, Iwaoka K, Hosoda M, Tokonami S. COMPARATIVE STUDY ON PERFORMANCE OF VARIOUS ENVIRONMENTAL RADIATION MONITORS. Radiat Prot Dosimetry 2019; 184:307-310. [PMID: 31330024 DOI: 10.1093/rpd/ncz104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/07/2019] [Indexed: 06/10/2023]
Abstract
After the Fukushima Daiichi Nuclear Power Plant accident, the radiation dose for first responders was not evaluated accurately due to lack of the monitoring data. It has been important to evaluate a radiation dose for workers in emergency response at a nuclear accident. In this study, a new device which can evaluate both of external and internal exposure doses was developed and the performance of various environmental radiation monitors including commercially available monitors were tested and compared from the viewpoint of an environmental monitoring at emergency situation. Background counts of the monitors and the ambient dose equivalent rate were measured in Fukushima Prefecture. The detection limit for beta particles was evaluated by the method of ISO11929. The sensitivity for gamma-rays of the dust monitor using a ZnS(Ag) and a plastic scintillator was high, but that of the external exposure monitor using a silicon photodiode with CsI(Tl) crystal was relatively low. The detection limit ranged 190-280 Bq m-3 at 100 μSv h-1, exceeding the detection limit of 100 Bq m-3 in the minimum requirement by the National Regulation Authority in Japan. Use of the shielding with lead is necessary to achieve the minimum requirement. These results indicate that the dust monitor using a ZnS(Ag) scintillator and a plastic scintillator is suitable for the external exposure monitor and the developed internal exposure monitor is for the internal exposure monitor at emergency situation among the evaluated monitors. In the future study, the counting efficiency, the relative uncertainty and the performance of the detection for alpha particles will be evaluated, and it will be considered which type of a monitor is suitable after taking the portability into account.
Collapse
Affiliation(s)
- Y Tamakuma
- Departmenet of Radiation Sciences, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - R Yamada
- Departmenet of Radiation Sciences, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - T Suzuki
- Departmenet of Radiation Sciences, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - T Kuroki
- Fuji Electric Co. Ltd., 11-2 Osaki, Shinagawa, Tokyo, Japan
| | - R Saga
- Fuji Electric Co. Ltd., 11-2 Osaki, Shinagawa, Tokyo, Japan
| | - H Mizuno
- Fuji Electric Co. Ltd., 11-2 Osaki, Shinagawa, Tokyo, Japan
| | - H Sasaki
- Fuji Electric Co. Ltd., 11-2 Osaki, Shinagawa, Tokyo, Japan
| | - K Iwaoka
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba, Japan
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - M Hosoda
- Departmenet of Radiation Sciences, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - S Tokonami
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| |
Collapse
|
30
|
Kida H, Hikoso S, Nakatani D, Suna S, Dohi T, Mizuno H, Okada K, Kitamura T, Kojima T, Oeun B, Sunaga A, Sakata Y. P5734The outcome of intra-aortic balloon pumping support for acute myocardial infarction with extracorporeal membrane oxygenation therapy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
It has been reported that intra-aortic balloon pumping (IABP) support for acute myocardial infarction (AMI) with cardiogenic shock did not reduce short and long-term mortality. However, the significance of IABP support for AMI patients with extracorporeal membrane oxygenation (ECMO) therapy remains unclear. The aim of this study was to investigate the effect of IABP support for the short and long-term outcome in AMI patients who received ECMO.
Methods
Using the database of the Osaka Acute Coronary Insufficiency Study (OACIS), 12,093 consecutive AMI patients were enrolled in this analysis. Among these, we analyzed 520 patients with ECMO. We classified the patients into two groups, patients who received IABP support [IABP group (n=460)] and patients who did not [no IABP group (n=60)]. Primary outcome was all-cause death.
Results
Study patients had following baseline clinical characteristics, age: 66.8±12.0 year old, male: 78.3%, diabetes mellitus: 41.0%, Killip class≥II: 66.2%, multi-vessel disease: 72.3%, peak creatine phosphokinase >3000IU/L: 68.1%. During a mean follow-up period of 349±625 days, Kaplan-Meier analysis revealed that the all-cause death was significantly lower in IABP group than no IABP group for 30-day (45.5% vs 72.7%, log-rank p<0.001) and long-term (66.2% vs 78.4%, Log rank p=0.005) follow-up period. Cox multivariate analysis revealed that IABP support was significantly associated with a reduced risk of mortality (Hazard ratio 0.445, 95% confidence interval 0.289 to 0.687, p<0.001).
Conclusions
IABP support for AMI patients with ECMO was significantly associated with reduced risks of the short and long-term mortality, suggesting that IABP support might contribute to improvement of the survival in AMI patients with ECMO.
Collapse
Affiliation(s)
- H Kida
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - D Nakatani
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - S Suna
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - T Dohi
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - H Mizuno
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - K Okada
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - T Kitamura
- Osaka University Graduate School of Medicine, Social and Environmental Medicine, Osaka, Japan
| | - T Kojima
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - B Oeun
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - A Sunaga
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Cardiology, Osaka, Japan
| |
Collapse
|
31
|
Ichikawa Y, Senda D, Shingyochi Y, Mizuno H. Potential Advantages of Using Three-Dimensional Exoscope for Microvascular Anastomosis in Free Flap Transfer. Plast Reconstr Surg 2019; 144:726e-727e. [PMID: 31568348 DOI: 10.1097/prs.0000000000006088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Yuichi Ichikawa
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | | | | | | |
Collapse
|
32
|
Sunaga A, Hikoso S, Yamada T, Yasumura Y, Uematsu M, Abe H, Nakagawa Y, Higuchi Y, Fuji H, Mano T, Nakatani D, Mizuno H, Okada K, Kitamura T, Sakata Y. 128Change in geriatric nutritional risk index predicts one-year mortality in patients with heart failure with preserved ejection fraction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Malnutrition is associated with adverse prognosis in heart failure patients. However, in patients with heart failure with preserved ejection fraction (HFpEF), the effects of change in nutritional status during hospitalization on prognosis is unknown. Geriatric nutritional risk index (GNRI) is a widely used objective index for evaluating nutritional status. Low GNRI (<92) has moderate or severe nutritional risk and high GNRI (≥92) has no or low nutritional risk.
Purpose
The purpose of this study was to clarify the effect of change in GNRI during hospitalization on one-year mortality and the association between the value of GNRI and one-year mortality in patients with HFpEF.
Methods
We prospectively registered patients with HFpEF in PURSUIT-HFpEF registry when they were hospitalized for heart failure in 29 hospitals. Preserved ejection fraction was defined as more than 50% of left ventricular ejection fraction. Of the 486 patients who registered PURSUIT-HFpEF, 228 cases with one-year follow-up data were examined. GNRI was calculated as follows: 14.89 × serum albumin (g/dl) + 41.7 × body mass index/22.
Results
Mean age was 81±10 years and 100 patients (44%) were male. During a median [interquartile range] follow-up period of 374 [342, 400] days, 28 patients (12%) died. Mortality was significantly higher in patients with low GNRI at admission (n=65) than those with high GNRI at admission (n=163) (26% vs. 9%, log-rank P=0.011) and higher in patients with low GNRI at discharge (n=109) than those with high GNRI at discharge (n=119) (22% vs. 6%, log-rank P=0.002). Multivariate analysis with Cox proportional hazard model with patient characteristics at admission revealed that low GNRI at admission was independently associated with mortality (hazard ratio: 0.96, 95% CI: 0.93–0.99, P=0.035) and that with patient characteristics at discharge revealed that low GNRI at discharge was independently associated with mortality (hazard ratio: 0.94, 95% CI: 0.91–0.97, P<0.001). We also compared mortality by dividing patients into 4 group according to whether GNRI was high or low at the time of admission and discharge. Patients with low GNRI at admission and at discharge (n=59) exhibited the highest mortality, on the other hand, patients with high GNRI at admission and low GNRI at discharge (n=50) exhibited higher mortality than those with high GNRI both at admission and at discharge (n=113) (Low and low: 28% vs. High and low: 14% vs. High and high: 6% vs. Low and high: 0%, log-rank P=0.010).
All cause mortality
Conclusion
GNRI at admission or at discharge was independently associated with one-year mortality in patients with HFpEF. Moreover, worsening GNRI during hospitalization is associated with the worse prognosis. It is important to prevent lowering GNRI during treatment of acute decompensated HFpEF.
Acknowledgement/Funding
Roche Diagnostics, FUJIFILM Toyama Chemical
Collapse
Affiliation(s)
- A Sunaga
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - S Hikoso
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - T Yamada
- Osaka General Medical Center, Cardiology, Osaka, Japan
| | - Y Yasumura
- Amagasaki Central Hospital, Cardiology, Amagasaki, Japan
| | - M Uematsu
- Osaka National Hospital, Cardiology, Osaka, Japan
| | - H Abe
- Osaka National Hospital, Cardiology, Osaka, Japan
| | - Y Nakagawa
- Kawanishi City Hospital, Cardiology, Kawanishi, Japan
| | - Y Higuchi
- Osaka Police Hospital, Cardiology, Osaka, Japan
| | - H Fuji
- Kobe Ekisaikai Hospital, Cardiology, Kobe, Japan
| | - T Mano
- Kansai Rosai Hospital, Cardiovascular Center, Amagasaki, Japan
| | - D Nakatani
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - H Mizuno
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - K Okada
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - T Kitamura
- Osaka University, Cardiovascular Medicine, Suita, Japan
| | - Y Sakata
- Osaka University, Cardiovascular Medicine, Suita, Japan
| |
Collapse
|
33
|
Tanaka R, Umeyama Y, Hagiwara H, Ito-Hirano R, Fujimura S, Mizuno H, Ogawa R. Keloid patients have higher peripheral blood endothelial progenitor cell counts and CD34 + cells with normal vasculogenic and angiogenic function that overexpress vascular endothelial growth factor and interleukin-8. Int J Dermatol 2019; 58:1398-1405. [PMID: 31290139 DOI: 10.1111/ijd.14575] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND One suggested reason for aberrant wound healing in keloid scars is chronic inflammation of the dermis. We hypothesized that excessive blood vessel formation and high capillary density in keloid tissue is caused by dysfunction of endothelial progenitor cells. METHODS We compared the number of circulating endothelial progenitor cells and vasculogenic and angiogenic capacity, as well as secretory function, of circulating CD34+ cells in keloid patients and healthy individuals. RESULTS Compared to mononuclear cell cultures from healthy donors, cultures of peripheral blood mononuclear cells obtained from keloid patients showed a more than twofold increase in the number of peripheral blood EPCs (fibronectin-adhering cells that phagocytized acetylated low-density lipoprotein and bound Ulex europaeus agglutinin-I lectin). However, there was no difference in colony-forming ability and participation in in vitro angiogenesis between circulating CD34+ cells isolated from keloid patients and healthy individuals. This means that circulating CD34+ /endothelial progenitor cells in keloid patients have normal vasculogenic and angiogenic function. However, CD34+ cells derived from keloid patients demonstrated a more than sevenfold expression of the interleukin-8 gene and a more than fivefold expression of the vascular endothelial growth factor gene than CD34+ cells derived from healthy individuals. CONCLUSIONS These results support the role of vascular endothelial growth factor and interleukin-8 in increased recruitment of endothelial progenitor cells in keloid patients.
Collapse
Affiliation(s)
- Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Yuri Umeyama
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroko Hagiwara
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rie Ito-Hirano
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Satoshi Fujimura
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rei Ogawa
- Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Tokyo, Japan
| |
Collapse
|
34
|
Ozu K, Minamiguchi H, Konishi S, Mizote I, Mizuno H, Hikoso S, Sakata Y. P6641Prediction of the distribution of local abnormal vetricular activities for ventricular tachycardia ablation with Tc-99m scintigram. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Ozu
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - H Minamiguchi
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - S Konishi
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - I Mizote
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - H Mizuno
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine, Suita, Japan
| |
Collapse
|
35
|
Kado M, Tanaka R, Arita K, Okada K, Ito-Hirano R, Fujimura S, Mizuno H. Human peripheral blood mononuclear cells enriched in endothelial progenitor cells via quality and quantity controlled culture accelerate vascularization and wound healing in a porcine wound model. Cell Transplant 2018; 27:1068-1079. [PMID: 29974793 PMCID: PMC6158547 DOI: 10.1177/0963689718780307] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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] [Indexed: 12/26/2022] Open
Abstract
The transplantation of endothelial progenitor cells (EPCs) is used to promote wound angiogenesis. In patients with chronic wounds and accompanying morbidities, EPCs are often compromised in number and function. To overcome these limitations, we previously developed a quality and quantity controlled (QQ) culture system to enrich peripheral blood mononuclear cells (PBMNCs) in EPCs. To evaluate the wound healing efficacy of mononuclear cells (MNCs) harvested after QQ culture (QQMNCs), preclinical studies were performed on large animals. MNCs harvested from the blood of healthy human subjects were cultured in the presence of angiogenic cytokines and growth factors in a serum-free medium for 7 days. A total of 5 × 106 QQMNCs per full-thickness skin defect or control saline was injected into wounds induced in cyclosporine-immunosuppressed pigs. EPC colony-forming assays revealed a significantly higher number of definitive (partially differentiated) EPC colony-forming units in QQMNCs. Flow cytometry evaluation of QQMNC surface markers showed enrichment of CD34+ and CD133+ stem cell populations, significant reduction in CCR2+ cell percentages, and a greater than 10-fold increase in the percentage of anti-inflammatory M2-type macrophages (CD206+ cells) compared with PBMNCs. Wounds treated with QQMNCs had a significantly higher closure rate. Wounds were harvested, frozen, and sectioned at day 21 postoperatively. Hematoxylin and eosin staining revealed that the epithelization of QQMNC-treated wounds was more advanced than in controls. Treated wounds developed granulation tissue with more mature collagen and larger capillary networks. CD31 and human mitochondrial co-staining confirmed the presence of differentiated human cells within newly formed vessels. Real-time polymerase chain reaction (PCR) showed upregulation of interleukin 6 (IL-6), IL-10, and IL-4 in the wound bed, suggesting paracrine activity of the transplanted QQMNCs. Our data demonstrate for the first time that QQ culture of MNCs obtained from a small amount of peripheral blood yields vasculogenic and therapeutic cells effective in wound healing.
Collapse
Affiliation(s)
- Makiko Kado
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rica Tanaka
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Kayo Arita
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Kayoko Okada
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rie Ito-Hirano
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Satoshi Fujimura
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- 1 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| |
Collapse
|
36
|
Ohtake T, Kobayashi S, Slavin S, Mochida Y, Ishioka K, Moriya H, Hidaka S, Matsuura R, Sumida M, Katagiri D, Noiri E, Okada K, Mizuno H, Tanaka R. Human Peripheral Blood Mononuclear Cells Incubated in Vasculogenic Conditioning Medium Dramatically Improve Ischemia/Reperfusion Acute Kidney Injury in Mice. Cell Transplant 2018; 27:520-530. [PMID: 29737200 PMCID: PMC6038042 DOI: 10.1177/0963689717753186] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Acute kidney injury (AKI) is a major clinical problem that still has no established treatment. We investigated the efficacy of cultured human peripheral blood mononuclear cells (PBMNCs) for AKI. Ischemia/reperfusion injury (IRI) was used to induce AKI in male nonobese diabetic (NOD/severe combined immunodeficiency) mice aged 7 to 8 wk. PBMNCs were isolated from healthy volunteers and were subjected to quality and quantity controlled (QQc) culture for 7 d in medium containing stem cell factor, thrombopoietin, Flt-3 ligand, vascular endothelial growth factor, and interleukin 6. IRI-induced mice were divided into 3 groups and administered (1) 1 × 106 PBMNCs after QQc culture (QQc PBMNCs group), (2) 1 × 106 PBMNCs without QQc culture (non-QQc PBMNCs group), or (3) vehicle without PBMNCs (IRI control group). PBMNCs were injected via the tail vein 24 h after induction of IRI, followed by assessment of renal function, histological changes, and homing of injected cells. Blood urea nitrogen and serum creatinine (Cr) 72 h after induction of IRI in the QQc PBMNCs group dramatically improved compared with those in the IRI control and the non-QQc PBMNCs groups, accompanied by the improvement of tubular damages. Interstitial fibrosis 14 d after induction of IRI was also significantly improved in the QQc PBMNCs group compared with the other groups. The renoprotective effect noted in the QQc PBMNCs group was accompanied by reduction of peritubular capillary loss. The change of PBMNCs’ population (increase of CD34+ cells, CD133+ cells, and CD206+ cells) and increased endothelial progenitor cell colony-forming potential by QQc culture might be one of the beneficial mechanisms for restoring AKI. In conclusion, an injection of human QQc PBMNCs 24 h after induction of IRI dramatically improved AKI in mice.
Collapse
Affiliation(s)
- Takayasu Ohtake
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan.,2 Division of Regenerative Medicine, Department of Center for Clinical and Translational Science, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Shuzo Kobayashi
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan.,2 Division of Regenerative Medicine, Department of Center for Clinical and Translational Science, Shonan Kamakura General Hospital, Kamakura, Japan
| | | | - Yasuhiro Mochida
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Kunihiro Ishioka
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Hidekazu Moriya
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Sumi Hidaka
- 1 Department of Kidney Disease and Transplant Center, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Ryo Matsuura
- 4 Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Maki Sumida
- 4 Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Daisuke Katagiri
- 4 Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Eisei Noiri
- 4 Department of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
| | - Kayoko Okada
- 5 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Ochanomizu, Japan
| | - Hiroshi Mizuno
- 5 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Ochanomizu, Japan
| | - Rica Tanaka
- 5 Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Ochanomizu, Japan
| |
Collapse
|
37
|
Yamada KT, Suzuki M, Pradipto AM, Koyama T, Kim S, Kim KJ, Ono S, Taniguchi T, Mizuno H, Ando F, Oda K, Kakizakai H, Moriyama T, Nakamura K, Chiba D, Ono T. Microscopic Investigation into the Electric Field Effect on Proximity-Induced Magnetism in Pt. Phys Rev Lett 2018; 120:157203. [PMID: 29756866 DOI: 10.1103/physrevlett.120.157203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 06/08/2023]
Abstract
Electric field effects on magnetism in metals have attracted widespread attention, but the microscopic mechanism is still controversial. We experimentally show the relevancy between the electric field effect on magnetism and on the electronic structure in Pt in a ferromagnetic state using element-specific measurements: x-ray magnetic circular dichroism (XMCD) and x-ray absorption spectroscopy (XAS). Electric fields are applied to the surface of ultrathin metallic Pt, in which a magnetic moment is induced by the ferromagnetic proximity effect resulting from a Co underlayer. XMCD and XAS measurements performed under the application of electric fields reveal that both the spin and orbital magnetic moments of Pt atoms are electrically modulated, which can be explained not only by the electric-field-induced shift of the Fermi level but also by the change in the orbital hybridizations.
Collapse
Affiliation(s)
- K T Yamada
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Suzuki
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - A-M Pradipto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - T Koyama
- Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - S Kim
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K-J Kim
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ono
- Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa 240-0196, Japan
| | - T Taniguchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Mizuno
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Ando
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Oda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Kakizakai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Moriyama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nakamura
- Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - D Chiba
- Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - T Ono
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Center for Spintronics Research Network (CSRN), Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
38
|
Kimura D, Kida T, Sato T, Fukumoto M, Kohmoto R, Kojima S, Mizuno H, Sakaguchi H, Sugasawa J, Ikeda T. A Case of Retinal Detachment with Unique Optical Coherence Tomography Findings after Gamma Knife® Radiosurgery Treatment for Choroidal Melanoma. Case Rep Ophthalmol 2018; 9:17-23. [PMID: 29643777 PMCID: PMC5892324 DOI: 10.1159/000485317] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 11/15/2017] [Indexed: 11/19/2022] Open
Abstract
Purpose To report a case of retinal detachment with unique optical coherence tomography (OCT) findings after Gamma Knife® (GK; Elekta Instrument AB, Stockholm, Sweden) treatment for choroidal melanoma (CM). Case Report A 48-year-old woman underwent GK therapy for CM in her right eye from the macula to the temporal side. While the tumor subsequently shrank, the patient developed radiation retinopathy, which was treated with laser photocoagulation. The tumor lesions later subsided; however, her visual acuity (VA) decreased 8 years after the initial treatment. Although the tumor lesions in the right eye had become scarred, a bullous retinal detachment with fixed folds occurred in the superior-nasal quadrants. OCT examination revealed a preretinal membrane, vitreoretinal traction, and an inner retinal break; however, no outer retinal break was clearly detectable. MRI scans showed no increase in tumorous lesions, and 123I-IMP SPECT imaging showed no photon accumulation. Thus, it was determined that there was no tumor activity. The corrected VA in her right eye was light perception, and it was determined that there was no indication for vitreous surgery. Conclusion In this case, an inner retinal break was formed by the vitreoretinal traction around the scarred tumor and radiation retinopathy, thus suggesting the possibility of the development of a rhegmatogenous retinal detachment presumably complicated with an outer retinal break.
Collapse
Affiliation(s)
- Daisaku Kimura
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan.,Department of Ophthalmology, Takatsuki Red Cross Hospital, Takatsuki, Japan
| | - Teruyo Kida
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Takaki Sato
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Masanori Fukumoto
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Ryohsuke Kohmoto
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Shota Kojima
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Hiroshi Mizuno
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan.,Department of Ophthalmology, Osaka City General Hospital, Osaka, Japan
| | - Hitoshi Sakaguchi
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan.,Department of Ophthalmology, Osaka City General Hospital, Osaka, Japan
| | - Jun Sugasawa
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| | - Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Medical College, Takatsuki, Japan
| |
Collapse
|
39
|
Tanaka R, Masuda H, Fujimura S, Ito-Hirano R, Arita K, Kakinuma Y, Hagiwara H, Kado M, Hayashi A, Mita T, Ogawa T, Watada H, Mizuno H, Sawada N, Asahara T. Quality-Quantity Control Culture Enhances Vasculogenesis and Wound Healing Efficacy of Human Diabetic Peripheral Blood CD34+ Cells. Stem Cells Transl Med 2018; 7:428-438. [PMID: 29573563 PMCID: PMC5905232 DOI: 10.1002/sctm.17-0043] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 02/25/2017] [Accepted: 01/17/2018] [Indexed: 01/16/2023] Open
Abstract
Autologous endothelial progenitor cell (EPC) therapy is commonly used to stimulate angiogenesis in ischemic repair and wound healing. However, low total numbers and functional deficits of EPCs make autologous EPC therapy ineffective in diabetes. Currently, no known ex vivo culture techniques can expand and/or ameliorate the functional deficits of EPCs for clinical usage. Recently, we showed that a quality‐quantity culture (QQc) system restores the vasculogenic and wound‐healing efficacy of murine diabetic EPCs. To validate these results and elucidate the mechanism in a translational study, we evaluated the efficacy of this QQc system to restore the vasculogenic potential of diabetic human peripheral blood (PB) CD34+ cells. CD34+ cells purified from PB of diabetic and healthy patients were subjected to QQc. Gene expression, vascular regeneration, and expression of cytokines and paracrine mediators were analyzed. Pre‐ or post‐QQc diabetic human PB‐CD34+ cells were transplanted into wounded BALB/c nude mice and streptozotocin‐induced diabetic mice to assess functional efficacy. Post‐QQc diabetic human PB‐CD34+ cell therapy significantly accelerated wound closure, re‐epithelialization, and angiogenesis. The higher therapeutic efficacy of post‐QQc diabetic human PB‐CD34+ cells was attributed to increased differentiation ability of diabetic CD34+ cells, direct vasculogenesis, and enhanced expression of angiogenic factors and wound‐healing genes. Thus, QQc can significantly enhance the therapeutic efficacy of human PB‐CD34+ cells in diabetic wounds, overcoming the inherent limitation of autologous cell therapy in diabetic patients, and could be useful for treatment of not only wounds but also other ischemic diseases. Stem Cells Translational Medicine2018;7:428–438
Collapse
Affiliation(s)
- Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Haruchika Masuda
- Department of Basic Clinical Science, Division of Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan
| | | | - Rie Ito-Hirano
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Kayo Arita
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Yusuke Kakinuma
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Hiroko Hagiwara
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Makiko Kado
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Ayato Hayashi
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Tomoya Mita
- Department of Internal Medicine, Division of Diabetes and Metabolism, Tokyo, Japan
| | - Takasuke Ogawa
- Department of Dermatology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hirotaka Watada
- Department of Internal Medicine, Division of Diabetes and Metabolism, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Tokyo, Japan
| | - Naoki Sawada
- Global COE Program, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayuki Asahara
- Department of Basic Clinical Science, Division of Regenerative Medicine, Tokai University School of Medicine, Isehara, Japan
| |
Collapse
|
40
|
Vangindertael J, Camacho R, Sempels W, Mizuno H, Dedecker P, Janssen KPF. An introduction to optical super-resolution microscopy for the adventurous biologist. Methods Appl Fluoresc 2018; 6:022003. [DOI: 10.1088/2050-6120/aaae0c] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
41
|
Mizuno H, Isobe J, Matsunobe S, Nakamura T, Shimizu Y, Hitomi S. A liquid-liquid blood-gas exchange for the treatment of acute respiratory failure: A new blood gas exchange using artificial blood as an oxygen carrier. Int J Artif Organs 2018. [DOI: 10.1177/039139889401701110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new liquid-liquid blood gas exchange system was investigated using a veno-venous low flow extracorporeal circuit. A 2 m2 hollow fiber dialyzer served as the interface of the blood and oxygen carrier (a 38 percent FC-43, perfluorocarbon emulsion in a buffered electrolyte solution), which was continuously recycled through a bubble oxygenator. Experiments were performed on five mongrel dogs under general anesthesia. Upon the arrest of spontaneous ventilation, the dogs' lungs were inflated with 50% oxygen gas under a positive pressure of 10 cmH2O. After 10 min of apnea the dogs' PaO2 decreased to 37 ± 14 mmHg, and the extracorporeal circulation was started at 10 ml/min/kg b./w. At 15 min the PaO2 had risen to 80 ± 41 mmHg and at 30 min to 121 ± 17 mmHg. The oxygen transfer was 8.3 ± 2.3 ml/min. The extracorporeal circulation was continued 5h, when PaO2 reached 156 ± 90 mmHg, and PaCO2 148 ± 43 mmHg, then stopped. Fifteen minutes later, the PaO2 had returned to 32 ± 10 mmHg. These findings indicate that our blood gas exchange system can supply a sufficient amount of oxygen to the body under apnea with continuous positive airway pressure.
Collapse
Affiliation(s)
- H. Mizuno
- Chest Disease Research Institute, Kyoto University, Kyoto
| | - J. Isobe
- Research Center for Biomedical Engineering, Kyoto University, Kyoto - Japan
| | - S. Matsunobe
- Research Center for Biomedical Engineering, Kyoto University, Kyoto - Japan
| | - T. Nakamura
- Research Center for Biomedical Engineering, Kyoto University, Kyoto - Japan
| | - Y. Shimizu
- Research Center for Biomedical Engineering, Kyoto University, Kyoto - Japan
| | - S. Hitomi
- Chest Disease Research Institute, Kyoto University, Kyoto
| |
Collapse
|
42
|
Mizuno H, Kasuga S, Kawahigashi H. Root lodging is a physical stress that changes gene expression from sucrose accumulation to degradation in sorghum. BMC Plant Biol 2018; 18:2. [PMID: 29298675 PMCID: PMC5751775 DOI: 10.1186/s12870-017-1218-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 12/19/2017] [Indexed: 05/24/2023]
Abstract
BACKGROUND Sorghum (Sorghum bicolor L.) is used as a raw material for biofuels because it accumulates sugars at high levels in the stem. Lodging of sorghum occurs when the soil is wet and very high winds blow across the field. In root lodging, the roots are pulled loose from the soil, causing the plant to fall over. Lodging reduces the yield of nonstructural carbohydrates. It is not yet clear which genes show changes in expression when sorghum falls over. We compared whole-gene expression in the mature stems of intact and lodged sorghum plants, with a focus on comparisons from the perspective of differences in sugar accumulation or degradation. RESULTS Lodging decreased sucrose content, starch content, and ratio of sucrose to total sugars in the stems of the sorghum cultivar SIL-05. Particular paralogs of SWEET and TMT family genes, which encode sucrose or hexose transporters, or both, were significantly highly expressed in intact or lodged sorghum stems. In intact stems, genes encoding the glucose-6-phosphate translocator, aquaporins, and enzymes involved in photosynthesis and starch synthesis were highly expressed. In lodged sorghum stems, expression of genes associated with sucrose or starch degradation or energy production was increased. Notably, expression of genes encoding enzymes catalyzing irreversible reactions and associated with the first steps of these metabolic pathways (e.g. INV, SUS, and hexokinase- and fructokinase-encoding genes) was significantly increased by lodging. Expression of SUT, SPS, and SPP was almost the same in intact and lodged sorghum. CONCLUSIONS Specific paralogs of sucrose-associated genes involved in metabolic pathways and in membrane transport were expressed in the stems of sorghum SIL-05 at the full-ripe stage. Root lodging drastically changed the expression of these genes from sucrose accumulation to degradation. The changes in gene expression resulted in decreases in sugar content and in the proportion of sucrose to hexoses in the stems of lodged plants.
Collapse
Affiliation(s)
- Hiroshi Mizuno
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 2-1-2, Kannondai, Tsukuba, Ibaraki 305-8518 Japan
| | - Shigemitsu Kasuga
- Faculty of Agriculture, Shinshu University, 8304 Minami-minowa, Nagano, 399-4598 Japan
| | - Hiroyuki Kawahigashi
- Institute of Crop Science (NICS), National Agriculture and Food Research Organization, 2-1-2, Kannondai, Tsukuba, Ibaraki 305-8518 Japan
| |
Collapse
|
43
|
Abstract
Mesenchymal stem cells (MSCs) have the potential to directly differentiate into osteogenic cells and efficiently regenerate bone tissue. Adipose-derived stem cells (ASCs) have the potential to differentiate into an osteogenic lineage, too. In addition, ASCs can be readily harvested in large numbers with low donor-site morbidity. Meanwhile, recent reports have demonstrated that platelet-rich plasma (PRP) contains a variety of growth factors and may be a powerful biological autologous cocktail of growth factors for tissue engineering.We have shown that ASC/PRP admixture had dramatic effects on bone regeneration in a rat calvarial defect model, not only through the osteogenic potential of ASCs, but also through the release of cytokines by platelets in PRP, which, in turn, support ASCs.In this chapter, we introduce the bone regeneration using a combination of ASCs and PRP in a rat calvarial defect model.
Collapse
Affiliation(s)
- Satoshi Tajima
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Department of Dentistry and Oral Surgery, AOI Universal Hospital, Kanagawa, Japan
| | - Morikuni Tobita
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.
| |
Collapse
|
44
|
Gopinath S, Shikamoto Y, Mizuno H, Kumar P. A potent anti-coagulant RNA aptamer inhibits blood coagulation by specifically blocking the extrinsic clotting pathway. Thromb Haemost 2017. [DOI: 10.1160/th06-01-0047] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
SummaryA potent antidote-controlled aptamer, as an anticoagulant, has reportedly overcome the complications of acute bleeding by the administration of available anticoagulants. In the present study, we provide evidence that the aptamer binds specifically to factors IX and IXa and inhibits their functions. Furthermore, we demonstrated that the aptamer inhibits blood coagulation by interfering with the extrinsic pathway, blocking the complex of factor VIIa and tissue factor interactions with factor IX. The results from the previous and present studies suggest that the aptamer probably binds in the vicinity of the EGF1 and EGF2 domains of factor IX.
Collapse
|
45
|
Abstract
Many bone regeneration therapies have been developed for clinical use and have variable outcomes and serious limitations. The goal of bone regeneration is to repair a bone defect in a stable and durable manner. Cellular strategies play an important role in bone tissue engineering. Clinical factors important for successful bone regeneration are the recruitment of cells to the defect site and the production of a suitable extracellular matrix consistent with bone tissues. Adipose-derived stem cells (ASCs) can be obtained in large quantities with little donor site morbidity or patient discomfort. They are multipotent somatic stem cells and have a strong potential to differentiate and secrete growth factors. In this review, we discuss the osteogenic potential of ASCs with/without several types of scaffolds in vivo and their clinical application for bone regeneration.
Collapse
Affiliation(s)
- Satoshi Tajima
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.,Department of Dentistry and Oral Surgery, AOI Universal Hospital, Kanagawa, Japan
| | - Morikuni Tobita
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan.
| |
Collapse
|
46
|
Ishizaka T, Mizuno H, Komatsu R, Ito A, Jikuzono T, Kakoi T, Bando M, Koga T, Handa J, Takahashi Y, Kanno A, Ozaki H, Chiba K. Japan Activity for Improvement of Cardiovascular Evaluation by Telemetry system (J-ICET)_ECG: Usefulness of Exposure Response Analysis in Telemetered Monkeys Toward the Early Clinical QT Assessment. J Pharmacol Toxicol Methods 2017. [DOI: 10.1016/j.vascn.2017.09.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
47
|
Mifuji K, Ishikawa M, Kamei N, Tanaka R, Arita K, Mizuno H, Asahara T, Adachi N, Ochi M. Angiogenic conditioning of peripheral blood mononuclear cells promotes fracture healing. Bone Joint Res 2017; 6:489-498. [PMID: 28835445 PMCID: PMC5579315 DOI: 10.1302/2046-3758.68.bjr-2016-0338.r1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 05/08/2017] [Indexed: 12/22/2022] Open
Abstract
Objectives The objective of this study was to investigate the therapeutic effect of peripheral blood mononuclear cells (PBMNCs) treated with quality and quantity control culture (QQ-culture) to expand and fortify angiogenic cells on the acceleration of fracture healing. Methods Human PBMNCs were cultured for seven days with the QQ-culture method using a serum-free medium containing five specific cytokines and growth factors. The QQ-cultured PBMNCs (QQMNCs) obtained were counted and characterised by flow cytometry and real-time polymerase chain reaction (RT-PCR). Angiogenic and osteo-inductive potentials were evaluated using tube formation assays and co-culture with mesenchymal stem cells with osteo-inductive medium in vitro. In order to evaluate the therapeutic potential of QQMNCs, cells were transplanted into an immunodeficient rat femur nonunion model. The rats were randomised into three groups: control; PBMNCs; and QQMNCs. The fracture healing was evaluated radiographically and histologically. Results The total number of PBMNCs was decreased after QQ-culture, however, the number of CD34+ and CD206+ cells were found to have increased as assessed by flow cytometry analysis. In addition, gene expression of angiogenic factors was upregulated in QQMNCs. In the animal model, the rate of bone union was higher in the QQMNC group than in the other groups. Radiographic scores and bone volume were significantly associated with the enhancement of angiogenesis in the QQMNC group. Conclusion We have demonstrated that QQMNCs have superior potential to accelerate fracture healing compared with PBMNCs. The QQMNCs could be a promising option for fracture nonunion. Cite this article: K. Mifuji, M. Ishikawa, N. Kamei, R. Tanaka, K. Arita, H. Mizuno, T. Asahara, N. Adachi, M. Ochi. Angiogenic conditioning of peripheral blood mononuclear cells promotes fracture healing. Bone Joint Res 2017;6: 489–498. DOI: 10.1302/2046-3758.68.BJR-2016-0338.R1.
Collapse
Affiliation(s)
- K Mifuji
- Hiroshima University, Hiroshima, Japan
| | | | - N Kamei
- Hiroshima University, Hiroshima, Japan
| | - R Tanaka
- Juntendo University School of Medicine, Tokyo, Japan
| | - K Arita
- Juntendo University School of Medicine, Tokyo, Japan
| | - H Mizuno
- Juntendo University School of Medicine, Tokyo, Japan
| | - T Asahara
- Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - N Adachi
- Hiroshima University, Hiroshima, Japan
| | - M Ochi
- Hiroshima University, Hiroshima, Japan
| |
Collapse
|
48
|
Nishikai-Yan Shen T, Kanazawa S, Kado M, Okada K, Luo L, Hayashi A, Mizuno H, Tanaka R. Interleukin-6 stimulates Akt and p38 MAPK phosphorylation and fibroblast migration in non-diabetic but not diabetic mice. PLoS One 2017; 12:e0178232. [PMID: 28542434 PMCID: PMC5441644 DOI: 10.1371/journal.pone.0178232] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 05/03/2017] [Indexed: 12/12/2022] Open
Abstract
Persistent inflammatory environment and abnormal macrophage activation are characteristics of chronic diabetic wounds. Here, we attempted to characterize the differences in macrophage activation and temporal variations in cytokine expression in diabetic and non-diabetic wounds, with a focus on interleukin (IL)-6 mRNA expression and the p38 MAPK and PI3K/Akt signaling pathways. Cutaneous wound closure, CD68- and arginase-1 (Arg-1)-expressing macrophages, and cytokine mRNA expression were examined in non-diabetic and streptozotocin-induced type 1 diabetic mice at different time points after injury. The effect of IL-6 on p38 MAPK and Akt phosphorylation was investigated, and an in vitro scratch assay was performed to determine the role of IL-6 in primary skin fibroblast migration. Before injury, mRNA expression levels of the inflammatory markers iNOS, IL-6, and TNF-α were higher in diabetic mice; however, IL-6 expression was significantly lower 6 h post injury in diabetic wounds than that in non-diabetic wounds. Non-diabetic wounds exhibited increased p38 MAPK and Akt phosphorylation; however, no such increase was found in diabetic wounds. In fibroblasts from non-diabetic mice, IL-6 increased the phosphorylation of p38 MAPK and levels of its downstream factor CREB, and also significantly increased Akt phosphorylation and levels of its upstream factor P13K. These effects of IL-6 were not detected in fibroblasts derived from the diabetic mice. In scratch assays, IL-6 stimulated the migration of primary cultured skin fibroblasts from the non-diabetic mice, and the inhibition of p38 MAPK was found to markedly suppress IL-6–stimulated fibroblast migration. These findings underscore the critical differences between diabetic and non-diabetic wounds in terms of macrophage activation, cytokine mRNA expression profile, and involvement of the IL-6-stimulated p38 MAPK–Akt signaling pathway. Aberrant macrophage activation and abnormalities in the cytokine mRNA expression profile during different phases of wound healing should be addressed when designing effective therapeutic modalities for refractory diabetic wounds.
Collapse
MESH Headings
- Animals
- Antigens, CD/metabolism
- Antigens, Differentiation, Myelomonocytic/metabolism
- Cell Movement/drug effects
- Cell Movement/physiology
- Cells, Cultured
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Fibroblasts/drug effects
- Fibroblasts/metabolism
- Fibroblasts/pathology
- Interleukin-6/administration & dosage
- Interleukin-6/metabolism
- Macrophages/drug effects
- Macrophages/metabolism
- Macrophages/pathology
- Male
- Mice, Inbred C57BL
- Phosphorylation/drug effects
- Phosphorylation/physiology
- Proto-Oncogene Proteins c-akt/metabolism
- RNA, Messenger/metabolism
- Skin/drug effects
- Skin/metabolism
- Skin/pathology
- Wound Healing/drug effects
- Wound Healing/physiology
- p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors
- p38 Mitogen-Activated Protein Kinases/metabolism
Collapse
Affiliation(s)
- Tsubame Nishikai-Yan Shen
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Shigeyuki Kanazawa
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
- Department of Plastic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Makiko Kado
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Kayoko Okada
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Lin Luo
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Ayato Hayashi
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Tokyo, Japan
- * E-mail:
| |
Collapse
|
49
|
Orgun D, Mizuno H. Multipotency and secretome: the mechanisms behind the regenerative potential of adipose-derived stem cells. ACTA ACUST UNITED AC 2017. [DOI: 10.20517/2347-9264.2016.109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
50
|
Shingyochi Y, Kanazawa S, Tajima S, Tanaka R, Mizuno H, Tobita M. A Low-Level Carbon Dioxide Laser Promotes Fibroblast Proliferation and Migration through Activation of Akt, ERK, and JNK. PLoS One 2017; 12:e0168937. [PMID: 28045948 PMCID: PMC5207507 DOI: 10.1371/journal.pone.0168937] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 12/08/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Low-level laser therapy (LLLT) with various types of lasers promotes fibroblast proliferation and migration during the process of wound healing. Although LLLT with a carbon dioxide (CO2) laser was also reported to promote wound healing, the underlying mechanisms at the cellular level have not been previously described. Herein, we investigated the effect of LLLT with a CO2 laser on fibroblast proliferation and migration. MATERIALS AND METHODS Cultured human dermal fibroblasts were prepared. MTS and cell migration assays were performed with fibroblasts after LLLT with a CO2 laser at various doses (0.1, 0.5, 1.0, 2.0, or 5.0 J/cm2) to observe the effects of LLLT with a CO2 laser on the proliferation and migration of fibroblasts. The non-irradiated group served as the control. Moreover, western blot analysis was performed using fibroblasts after LLLT with a CO2 laser to analyze changes in the activities of Akt, extracellular signal-regulated kinase (ERK), and Jun N-terminal kinase (JNK), which are signaling molecules associated with cell proliferation and migration. Finally, the MTS assay, a cell migration assay, and western blot analysis were performed using fibroblasts treated with inhibitors of Akt, ERK, or JNK before LLLT with a CO2 laser. RESULTS In MTS and cell migration assays, fibroblast proliferation and migration were promoted after LLLT with a CO2 laser at 1.0 J/cm2. Western blot analysis revealed that Akt, ERK, and JNK activities were promoted in fibroblasts after LLLT with a CO2 laser at 1.0 J/cm2. Moreover, inhibition of Akt, ERK, or JNK significantly blocked fibroblast proliferation and migration. CONCLUSIONS These findings suggested that LLLT with a CO2 laser would accelerate wound healing by promoting the proliferation and migration of fibroblasts. Activation of Akt, ERK, and JNK was essential for CO2 laser-induced proliferation and migration of fibroblasts.
Collapse
Affiliation(s)
- Yoshiaki Shingyochi
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shigeyuki Kanazawa
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Satoshi Tajima
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Rica Tanaka
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Hiroshi Mizuno
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Morikuni Tobita
- Department of Plastic and Reconstructive Surgery, Juntendo University School of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
- * E-mail:
| |
Collapse
|