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Kakimoto Y, Ohno S, Saito T, Isozaki S, Ikeda H, Matsushima Y, Ueda A, Tsuboi A, Osawa M. Assessment of maxillary sinus fluid volume for postmortem diagnosis of drowning. Radiography (Lond) 2024; 30:308-312. [PMID: 38091921 DOI: 10.1016/j.radi.2023.12.001] [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] [Received: 10/11/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 01/15/2024]
Abstract
INTRODUCTION Drowning is a comprehensive and exclusive diagnosis at autopsy. Autopsy findings such as pleural effusion and waterlogged lungs contribute to the diagnosis. Herein, we aim to reveal the practical usefulness and postmortem changes of the maxillary sinus fluid volume to diagnose drowning. METHODS We evaluated 52 drowning and 59 nondrowning cases. The maxillary sinus fluid volume was measured using a computed tomography (CT) scan, and pleural effusion volume and lung weight were manually measured at autopsy. The utility of these three indices for diagnosing drowning and its postmortem changes was evaluated. RESULTS The maxillary sinus fluid volume was significantly higher in drowning cases than in other external causes and cardiovascular death cases. Receiver operating characteristic curve analysis revealed that a total maxillary sinus fluid volume >1.04 mL more usefully indicated drowning (odds ratio, 8.19) than a total pleural effusion volume >175 mL (odds ratio, 7.23) and a total lung weight >829 g (odds ratio, 2.29). The combination of maxillary sinus fluid volume and pleural effusion volume more effectively predicted drowning than one index alone. Moreover, the maxillary sinus fluid volume was less influenced by the postmortem interval than the other two indices up to a week after death. CONCLUSION Maxillary sinus fluid volume can be more useful than pleural effusion volume and lung weight with higher sensitivity and odds ratio for diagnosing drowning. IMPLICATIONS FOR PRACTICE Fluid accumulation in both the maxillary sinuses strongly predicts drowning in the postmortem imaging.
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Affiliation(s)
- Y Kakimoto
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan.
| | - S Ohno
- Japan Coast Guard, Tokyo, Japan
| | - T Saito
- Japan Coast Guard, Tokyo, Japan
| | - S Isozaki
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - H Ikeda
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - Y Matsushima
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - A Ueda
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - A Tsuboi
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - M Osawa
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
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Kusajima EG, Yamamoto Y, Ishikawa K, Miura T, Funayama E, Osawa M, Takagi R, Maeda T. Sentinel node restoration by vascularized lymph node transfer in mice. Microsurgery 2024; 44:e30981. [PMID: 36321604 DOI: 10.1002/micr.30981] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/30/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Recent reports have indicated that vascularized lymph node transfer (VLNT) may improve the impaired immunity in lymphedema but there has been no report concerning anti-cancer immunity. In the early tumor immune response, dendritic cells (DCs) participate in tumor recognition and antigen presentation in local lymphatics. Here, we investigated the impact of VLNT on DC dynamics against cancer in mouse models. METHODS Forty-seven 8-week-old C57BL/6 N male mice were divided into three surgical groups: a VLNT model in which a vascularized inguinal lymph node (LN) flap was transferred into the ipsilateral fossa after a popliteal LN was removed; a LN dissection (LND) model in which the popliteal LN was dissected; and a control model in which a skin incision was made at the popliteal fossa and an ipsilateral inguinal LN was removed. Postoperative lymphatic flows were observed by indocyanine green lymphography and B16-F10-luc2 mouse melanoma were implanted into the ipsilateral footpad. The proportion of DCs in the transplanted nodes was measured by CD11c immunohistochemistry using digital imaging analysis 4 days after cancer implantation. Metastases to the lungs and LNs were quantitatively evaluated by luciferase assay 4 weeks after cancer implantation. RESULTS After VLNT, lymphatic reconnection was observed in 59.2% of mice. The proportion of DCs was significantly higher in the VLNT group with lymphatic reconnection (8.6% ± 1.0%) than in the naïve LN (4.3% ± 0.4%) (p < .001). The tumor burden of lung metastases was significantly less in the VLNT group with lymphatic reconnection compared with the LND group (p = .049). CONCLUSIONS Metastasis decreased in mice with reconnected lymphatics after VLNT. A possible explanation was that lymphatic restoration may have contributed to the tumor immune response by allowing DC migration to LNs.
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Affiliation(s)
- Erika G Kusajima
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takahiro Miura
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Ryo Takagi
- Department of Biostatistics, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Hoshino Y, Osawa M, Funayama E, Ishikawa K, Miura T, Hojo M, Yamamoto Y, Maeda T. Therapeutic Potential of the Prolyl Hydroxylase Inhibitor Roxadustat in a Mouse Hindlimb Lymphedema Model. Lymphat Res Biol 2023; 21:372-380. [PMID: 36880955 DOI: 10.1089/lrb.2022.0071] [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: 03/08/2023] Open
Abstract
Background: Lymphedema is an intractable disease with no curative treatment available. Conservative treatment is the mainstay, and new drug treatment options are strongly needed. The purpose of this study was to investigate the effect of roxadustat, a prolyl-4-hydroxylase inhibitor, on lymphangiogenesis and its therapeutic effect on lymphedema in a radiation-free mouse hindlimb lymphedema model. Methods and Results: Male C57BL/6N mice (8-10 weeks old) were used for the lymphedema model. Mice were randomized to an experimental group receiving roxadustat or a control group. The circumferential ratio of the hindlimbs was evaluated, and lymphatic flow of the hindlimbs was compared by fluorescent lymphography up to 28 days postoperatively. The roxadustat group showed an early improvement in hindlimb circumference and stasis of lymphatic flow. The number and area of lymphatic vessels on postoperative day 7 were significantly larger and smaller, respectively, in the roxadustat group compared with the control group. Skin thickness and macrophage infiltration on postoperative day 7 were significantly reduced in the roxadustat group compared with the control group. The relative mRNA expression of hypoxia-inducible factor-1α (Hif-1α), vascular endothelial growth factor receptor-3 (VEGFR-3), vascular endothelial growth factor-C (VEGF-C), and Prospero homeobox 1 (Prox1) on postoperative day 4 was significantly higher in the roxadustat group compared with the control group. Conclusions: Roxadustat demonstrated a therapeutic effect in a murine model of hindlimb lymphedema through promotion of lymphangiogenesis through the activation of HIF-1α, VEGF-C, VEGFR-3, and Prox1, suggesting the potential of roxadustat as a therapeutic option in lymphedema.
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Affiliation(s)
- Yoshitada Hoshino
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takahiro Miura
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masahiro Hojo
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Osawa M, Chan TY, Yang CH. New records of the squat lobster genus Munidopsis Whiteaves, 1874 (Crustacea, Decapoda, Munidopsidae) from the deep sea off Taiwan. Zookeys 2023; 1166:271-286. [PMID: 37346768 PMCID: PMC10280391 DOI: 10.3897/zookeys.1166.104009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/26/2023] [Indexed: 06/23/2023] Open
Abstract
Two species of the squat lobster family Munidopsidae, Munidopsisalbatrossae Pequegnat & Pequegnat, 1973 and M.pycnopoda Baba, 2005, are reported from Taiwan for the first time based on specimens collected from lower bathyal depths. The Taiwanese material of M.pycnopoda also represents the first record of the species from the Pacific Ocean and greatly extends this species' geographical range from the western Indian Ocean to western Pacific. The giant Munidopsis specimen from Taiwan is identified as M.albatrossae mainly by DNA barcoding even though M.albatrossae and M.aries (A. Milne-Edwards, 1880) are both morphologically and genetically extremely similar.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, JapanShimane UniversityShimaneJapan
| | - Tin-Yam Chan
- Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 202231, TaiwanNational Taiwan Ocean UniversityKeelungTaiwan
| | - Chien-Hui Yang
- Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 202231, TaiwanNational Taiwan Ocean UniversityKeelungTaiwan
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Tiwari S, Padate VP, Cubelio SS, Osawa M. Squat lobsters of the genera Raymunida Macpherson & Machordom, 2000 and Munidopsis Whiteaves, 1874 (Decapoda: Anomura: Galatheoidea) from the Indian Exclusive Economic Zone, with descriptions of three new species. J NAT HIST 2022. [DOI: 10.1080/00222933.2022.2138600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Shivam Tiwari
- Centre for Marine Living Resources & Ecology, Ministry of Earth Sciences, Government of India, Kochi, India
- Faculty of Marine Sciences, Cochin University of Science and Technology, Kochi, India
| | - Vinay P. Padate
- Centre for Marine Living Resources & Ecology, Ministry of Earth Sciences, Government of India, Kochi, India
| | - Sherine S. Cubelio
- Centre for Marine Living Resources & Ecology, Ministry of Earth Sciences, Government of India, Kochi, India
| | - Masayuki Osawa
- Estuary Research Center, Shimane University, Matsue, Japan
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Osawa M, Yamamoto Y, Fujita M, Maeda T, Funayama E. Novel Surgical Technique for Correction of Incomplete Median Cleft Lip Deformity in Oral-Facial-Digital Syndrome Type II. J Craniofac Surg 2021; 32:e741-e742. [PMID: 34446671 DOI: 10.1097/scs.0000000000007720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
ABSTRACT Oral-facial-digital syndromes (OFDSs) represent a heterogenous group of embryonic development disorders characterized by malformations of the face, oral cavity, and extremities. Oral-facial-digital syndrome type II is an autosomal recessive disease characterized by median cleft lip, gingival frenula, cleft lobulated tongue, and polydactyly. There are few reports on surgical techniques for correction of incomplete median cleft lip. Here we describe a novel surgical method that we used to correct an incomplete median cleft lip in a 5-year-old girl with oral-facial-digital syndrome type II. She had previously undergone surgery for congenital heart disease, oral anomalies, and polydactyly. Cheiloplasty was performed at 5 years and 8 months using a surgical approach that focused on repair of the median tubercle using lateral labial elements. A reasonably good Cupid's bow and median tubercle were achieved. Our technique for surgical correction of moderate incomplete median cleft lip provides adequate philtral height, vermillion fullness, and a good-shaped Cupid's bow.
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Affiliation(s)
- Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Maeda T, Yamamoto Y, Murao N, Hayashi T, Kimura C, Matsui S, Saito T, Matsui H, Osawa M, Funayama E. Maggot debridement therapy in critical limb ischaemia: a case study. J Wound Care 2021; 29:S28-S32. [PMID: 33320762 DOI: 10.12968/jowc.2020.29.sup12.s28] [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] [Indexed: 11/11/2022]
Abstract
OBJECTIVE In critical limb ischaemia (CLI), first-line therapy is revascularisation, but alternative treatment options are needed in certain cases. Maggot debridement therapy (MDT) is historically considered to be contraindicated in ischaemic ulcers. Wound care in patients with CLI is becoming increasingly diverse with the development of novel revascularisation strategies; therefore, CLI now needs to be reconsidered as an indication for MDT. METHOD We retrospectively reviewed five legs with CLI (five male, one female) treated with MDT between January 2013 and December 2017. Changes in skin perfusion pressure (SPP) around the ulcer before and after MDT were evaluated. One or two cycles of MDT were performed (eight in total). We also evaluated the proportion of necrotic tissue in the ulcer and the presence of exposed necrotic bone. The proportion of necrotic tissue in the ulcer was classified as NT 1+ (<25%), NT 2+ (25-50%), NT 3+ (50-75%) or NT 4+ (>75%). RESULTS When the proportion of necrotic tissue was >50%, with no exposed necrotic bone in the wound, an increase in SPP was observed after five (62.5%) of eight cycles of MDT. And with a proportion of necrotic tissue of <25% and/or exposed necrotic bone in the wound, a decrease in SPP was observed after three (37.5%) of eight cycles. Wound healing was accelerated in the presence of increased SPP. CONCLUSION Effective MDT with increased SPP requires an ulcerative state of necrotic tissue grade > NT 3+, with no exposed necrotic bone.
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Affiliation(s)
- Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Chu Kimura
- Department of Plastic and Reconstructive Surgery, Hakodate General Central Hospital, Hokkaido, Japan
| | - Suguru Matsui
- Center of Limb Salvage and Wound Care, Souen Central Hospital, Sapporo, Hokkaido, Japan
| | - Tatsuya Saito
- Center of Limb Salvage and Wound Care, Souen Central Hospital, Sapporo, Hokkaido, Japan
| | - Hotaka Matsui
- Center of Limb Salvage and Wound Care, Souen Central Hospital, Sapporo, Hokkaido, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
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Miura T, Yamamoto Y, Murao N, Maeda T, Osawa M, Hayashi T, Funayama E. Combined internal and external negative pressure wound therapy: breakthrough treatment for lymphocutaneous intractable fistula. Surg Today 2021; 51:1630-1637. [PMID: 33993364 DOI: 10.1007/s00595-021-02283-9] [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] [Received: 10/05/2020] [Accepted: 01/31/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE Lymphocutaneous fistula after lymph node dissection is intractable, yet there is no established treatment strategy. This study demonstrates the wound closure time achieved by a new method of combined internal and external negative pressure wound therapy (CIEN) in patients with lymphocutaneous fistula. METHODS The subjects of this study were six consecutive patients with lymphocutaneous fistula after lymphatic surgery, who were treated with CIEN between 2018 and 2020. The CIEN technique can be summarized as follows: first, internal foam is inserted into the fistula from the opening of the fenestration. Next, a slightly larger area of external foam is applied above the fistula flap outside the external margin of the foam-filled fistula. After bridging the internal foam and external foam, negative-pressure wound therapy is carried out on this bridging foam block. RESULTS CIEN led to rapid and complete wound healing in all six patients. Fistula flap margin ischemia developed in one patient, but adjusting the mode and pressure settings resulted in improvement. Three patients suffered contact dermatitis. There were no signs of tumor or fistula recurrence in any patients after at least 3 months of follow-up. CONCLUSION CIEN is an effective and less invasive treatment modality than the conventional method of managing lymphocutaneous fistula.
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Affiliation(s)
- Takahiro Miura
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
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Kimura S, Suzuki M, Honma A, Nakazono A, Osawa M, Nakamaru Y, Homma A. Objective evaluation of caudal deviation of the nasal septum and selection of the appropriate septoplasty technique. Auris Nasus Larynx 2021; 49:67-76. [PMID: 33966932 DOI: 10.1016/j.anl.2021.04.012] [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: 08/27/2020] [Revised: 03/16/2021] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Several methods have been reported to correct caudal deviation of the nasal septum, including open septorhinoplasty (OSR) and septoplasty with Killian incision (KI). In general, OSR is applied instead of KI for caudal deviation. However, there is little objective evidence own on the effects of OSR and KI for caudal deviation. In this study, we compared surgical outcomes between OSR and KI by quantifying nasal septum deviation using two simple and objective parameters on routine paranasal sinus CT scans. METHODS We retrospectively analyzed 18 patients who underwent OSR and 11 patients who underwent septoplasty with KI between April 2006 and October 2019. Caudal deviation was defined on the basis of the "Anterior-posterior Position of the most deviated point of the nasal septum (AP)," which was measured on computerized tomography. The deformation rate (DR) of the nasal septum was also calculated. Nasal airway resistance and visual analogue scale (VAS) score for nasal obstruction were examined. RESULTS The AP was significantly correlated with the VAS score (r=-0.58, p=0.017). The DR in patients with caudal septal deviation was significantly decreased by OSR (0.14±0.06 to 0.03±0.03, p=0.004), but not by KI (0.09±0.08 to 0.04±0.03, p=0.25). OSR also improved nasal airway resistance (1.10±0.44 to 0.42±0.15, p=0.02), and the VAS score (79.11±14.74 to 5.78±7.89, p=0.004). CONCLUSION Nasal obstruction is more severe in patients with the caudal deviation. OSR corrects caudal deviation of the nasal septum more effectively than does KI. The AP could be useful for the evaluation of the deviation of the nasal septum and help in selecting the appropriate septoplastic technique.
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Affiliation(s)
- Shogo Kimura
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Masanobu Suzuki
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Aya Honma
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Akira Nakazono
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yuji Nakamaru
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan.
| | - Akihiro Homma
- Department of Otolaryngology-Head & Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
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Maeda T, Funayama E, Yamamoto Y, Murao N, Osawa M, Ishikawa K, Hayashi T. Long-term outcomes and recurrence-free interval after the treatment of keloids with a standardized protocol. J Tissue Viability 2020; 30:128-132. [PMID: 33288386 DOI: 10.1016/j.jtv.2020.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 07/17/2020] [Revised: 10/29/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Recurrence rates of keloids have generally been reported at one time point. However, the longer the duration after treatment, the greater the likelihood that such lesions will recur. In this study, we analysed the time to recurrence during long-term follow-up. MATERIAL AND METHODS We retrospectively reviewed recurrence-free interval in 52 patients with keloid (age 8-79 years) who had been treated between June 2006 and January 2011 using a standardised protocol developed by our group. RESULTS Mean duration of follow-up was 37.5 (range, 7-120) months in patients with keloid. Kaplan-Meier survival curves revealed a statistically significant difference in recurrence-free interval between ear keloids and keloids excluding ear keloids. Recurrence rate for keloids was high in the first 2 years after treatment. CONCLUSIONS Kaplan-Meier analysis was useful for understanding the tendency of recurrence of keloids after treatment using a standardised protocol.
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Affiliation(s)
- T Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - E Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - Y Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - N Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - M Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - K Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan
| | - T Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Japan; Department of Oral and Maxillofacial Surgery, Graduate School of Dental Medicine, Hokkaido University, Japan.
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Ishikawa K, Funayama E, Yamamoto Y, Furukawa H, Hayashi T, Murao N, Osawa M, Maeda T, Fujita M, Sasaki S. Squamous cell carcinoma arising in a chronic leg ulcer in Klippel–Trenaunay syndrome after the Charles procedure: A case with 40 years of follow up. J Dermatol 2019; 46:e403-e405. [DOI: 10.1111/1346-8138.15001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
- Department of Plastic and Reconstructive Surgery Center for Vascular Anomalies Tonan Hospital SapporoJapan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Hiroshi Furukawa
- Department of Plastic and Reconstructive Surgery Aichi Medical University Nagakute Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery Faculty of Medicine and Graduate School of Medicine Hokkaido University SapporoJapan
| | - Munezumi Fujita
- Department of Plastic and Reconstructive Surgery Center for Vascular Anomalies Tonan Hospital SapporoJapan
| | - Satoru Sasaki
- Department of Plastic and Reconstructive Surgery Center for Vascular Anomalies Tonan Hospital SapporoJapan
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12
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Uchida Y, Kinose D, Noma K, Tsugawa T, Aoki K, Nakagawa H, Fukunaga K, Yamaguchi M, Osawa M, Tanaka-Mizuno S, Ogawa E, Nakano Y. P2.05-06 New Dosimetric Parameters Encompassing High Attenuation Enables More Accurate Prediction of Radiation Pneumonitis in Various Types of Cancers. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1605] [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: 10/25/2022]
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13
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Ishigaki K, Ihara C, Nakamura H, Mori-Yoshimura M, Maruo K, Murakami T, Sato T, Shichiji M, Ishiguro K, Nagata S, Kaiya H, Osawa M. FUKUYAMA CONGENITAL MUSCULAR DYSTROPHY. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.457] [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: 10/25/2022]
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14
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Ishiguro K, Nakayama T, Yoshioka M, Murakami T, Kajino S, Shichiji M, Sato T, Fukuyo N, Kuru S, Osawa M, Nagata S, Okubo M, Murakami N, Hayashi Y, Nishino I, Ishigaki K. EP.31Characteristic findings of skeletal muscle MRI in caveolinopathies. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.263] [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: 10/25/2022]
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15
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Funayama E, Yamamoto Y, Oyama A, Murao N, Hayashi T, Maeda T, Furukawa H, Osawa M. Combination laser therapy as a non-surgical method for treating congenital melanocytic nevi from cosmetically sensitive locations on the body. Lasers Med Sci 2019; 34:1925-1928. [PMID: 30820775 DOI: 10.1007/s10103-019-02753-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 02/13/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Akihiko Oyama
- Department of Plastic and Reconstructive Surgery, Fukushima Medical University, Fukushima, Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
| | - Hiroshi Furukawa
- Department of Plastic and Reconstructive Surgery, Aichi Medical University, Nagakute, Aichi, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan
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16
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Osawa M, Fujita Y. Submarine cave hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea) from three islands of the Ryukyu Islands, southwestern Japan. Zootaxa 2019; 4560:zootaxa.4560.3.3. [PMID: 31716567 DOI: 10.11646/zootaxa.4560.3.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 02/25/2019] [Indexed: 11/04/2022]
Abstract
Hermit crab species are reported on the basis of specimens collected by recent faunal surveys in submarine caves of three islands (Ie, Okinawa, and Shimoji Islands) of the Ryukyu Islands, southwestern Japan. The material includes three species in three genera of Diogenidae and 11 species in four genera of Paguridae. Catapaguroides longior Komai, Yamada Shirakawa, 2010 and Pylopaguropsis granulata Asakura, 2000, each previously known only from the holotype, are recorded with intraspecific morphological variation observed in the present specimens. Color and morphological variations of Pagurixus nomurai Komai Asakura, 1995 are also discussed. The present specimens of Catapaguroides foresti McLaughlin, 2002, C. longior, and Pylopaguropsis granulata suggest that the three species prefer the sandy or silty substrate in the deeper inner sites of submarine caves rather than other cryptic habitats in coral or rocky reefs.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane, 690-8504 Japan..
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17
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Osawa M, Higashiji T. Two large squat lobsters of the superfamily Chirostyloidea (Crustacea: Decapoda: Anomura) from the Ryukyu Islands, southwestern Japan, with description of a new species of the genus Eumunida Smith, 1883. Zootaxa 2019; 4555:319-330. [PMID: 30790919 DOI: 10.11646/zootaxa.4555.3.2] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Indexed: 11/04/2022]
Abstract
Two species of the chirostyloid families Sternostylidae and Eumunididae, Sternostylus investigatoris (Alcock Anderson, 1899) and Eumunida balteipes n. sp., are reported on the basis of material collected from deep waters off Kume Island, Ryukyu Islands, southwestern Japan. Sternostylus investigatoris is recorded for the first time and is the second species of the genus from Japanese waters. Eumunida balteipes n. sp. is morphologically closest to E. sternomaculata de Saint Laurent Macpherson, 1990, but the armature of the thoracic sternite 3 and P1 palm distinguishes the two species.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane, 690-8504 Japan.
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18
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Fujii K, Ito Y, Osawa M, Ido M, Ando T, Mouri Y, Kousaka J, Nakano S. Clinicopathological evaluation of papillary thyroid microcarcinomas. Eur J Surg Oncol 2019. [DOI: 10.1016/j.ejso.2018.10.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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19
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Fujita M, Yamamoto Y, Jiang JJ, Atsumi T, Tanaka Y, Ohki T, Murao N, Funayama E, Hayashi T, Osawa M, Maeda T, Kamimura D, Murakami M. NEDD4 Is Involved in Inflammation Development during Keloid Formation. J Invest Dermatol 2019; 139:333-341. [DOI: 10.1016/j.jid.2018.07.044] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 07/22/2018] [Accepted: 07/27/2018] [Indexed: 12/19/2022]
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20
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Ueno T, Osawa M, Shiozaki T, Green M, Garimella T. Exposure-Response Analysis for Efficacy of Daclatasvir, Asunaprevir, and Beclabuvir Combinations in HCV-Infected Patients. Clin Pharmacol Drug Dev 2019; 8:903-913. [PMID: 30667592 DOI: 10.1002/cpdd.646] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 12/03/2018] [Indexed: 12/21/2022]
Abstract
The combination regimen of daclatasvir, asunaprevir, and beclabuvir (3DAA regimen) was developed as a fixed-dose combination for the treatment of hepatitis C virus (HCV) infection in Japan. The objectives of this analysis were to characterize the relationship between drug exposure and sustained virologic response at posttreatment week 12 (SVR12) in HCV-infected subjects and to evaluate the impact of demographic covariates and clinical factors on the exposure-response (E-R) relationship. The E-R efficacy analysis was performed with data from phase 2 and phase 3 studies in HCV-infected subjects treated with the 3DAA regimen. The relationship between the probability of achieving SVR12 and exposure to daclatasvir, asunaprevir, and beclabuvir was described using a logistic regression model and included assessments of the potential covariate effects. The impacts of the covariates on the rate of SVR12 and interactions of covariates with the individual drug effects were tested. The final model for SVR12 included effects of non-genotype-1a status, resistance-associated NS5A-Q30 substitution in genotype-1a subjects, and baseline RNA level on the intercept, and effect of prior peg-interferon failure on the beclabuvir slope. Sex, race, age, weight, fibrosis score, alanine transaminase, and cirrhosis status had no statistically significant impact on the rate of SVR12. The individual E-R relationships with each drug, were relatively flat, and the effects of exposure were not significant. With the exception of the NS5A-Q30 substitution in genotype-1a subjects, statistically significant covariate effects had little impact on SVR12 rates. Overall, the E-R model was developed that captured the high SVR12 rates and the effect of covariates for the 3DAA regimen in HCV-infected patients.
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Affiliation(s)
- T Ueno
- Bristol-Myers Squibb KK, Tokyo, Japan
| | - M Osawa
- Bristol-Myers Squibb KK, Tokyo, Japan
| | | | - M Green
- Certara, Menlo Park, CA, USA
| | - T Garimella
- Bristol-Myers Squibb Research and Development, Lawrenceville, NJ, USA
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21
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Ishikawa K, Funayama E, Maeda T, Hayashi T, Murao N, Osawa M, Ito R, Furukawa H, Oyama A, Yamamoto Y. Changes in high endothelial venules in lymph nodes after vascularized and nonvascularized lymph node transfer in a murine autograft model. J Surg Oncol 2019; 119:700-707. [PMID: 30636050 DOI: 10.1002/jso.25365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 12/26/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVES Vascularized lymph node transfer (LNT) is gaining popularity in the treatment of lymphedema. However, it is unclear whether the vascularization of transferred lymph nodes (LNs) contributes to functional improvement. High endothelial venules (HEVs) are specialized vessels that allow lymphocytes to enter LNs. In this study, we compared the numbers of HEVs and lymphocytes in LNs after vascularized and nonvascularized LNT. METHODS Fifty mice were divided into three groups (group 1, pedicled vascularized LNT; group 2, pedicled nonvascularized LNT; group 3, free nonvascularized LNT). Afferent lymphatic reconnection was confirmed by patent blue staining. The transferred LNs were harvested 4 weeks after surgery. HEVs, B-cells, and T-cells were subjected to immunohistochemical staining and quantified. RESULTS Afferent lymphatic reconnection was observed in 13 of 20 transferred LNs in group 1, 11 of 15 in group 2, and 7 of 15 in group 3. The ratio of dilated/total HEVs in transferred LNs with afferent lymphatic reconnection was significantly higher in group 1 than in groups 2 and 3. No significant differences in numbers of B-cells and T-cells were found in the transferred LNs. CONCLUSIONS We found that more functional HEVs were preserved in cases with successful afferent lymphatic reconnection after vascularized LNT than after nonvascularized LNT.
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Affiliation(s)
- Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Riri Ito
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Furukawa
- Department of Plastic and Reconstructive Surgery, Aichi Medical University, Nagakute, Japan
| | - Akihiko Oyama
- Department of Plastic and Reconstructive Surgery, Fukushima Medical University, Fukushima, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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22
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Ishikawa K, Maeda T, Funayama E, Hayashi T, Murao N, Osawa M, Furukawa H, Oyama A, Yamamoto Y. Feasibility of pedicled vascularized inguinal lymph node transfer in a mouse model: A preliminary study. Microsurgery 2018; 39:247-254. [PMID: 30508286 DOI: 10.1002/micr.30394] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 08/31/2018] [Accepted: 10/05/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE Vascularized lymph node transfer is becoming more common in the treatment of lymphedema, but suitable small animal models for research are lacking. Here, we evaluated the feasibility of pedicled vascularized inguinal lymph node transfer in mice. METHODS Twenty-five mice were used in the study. An inguinal lymph node-bearing flap with a vascular pedicle containing the superficial caudal epigastric vessels was transferred into the ipsilateral popliteal fossa after excision of the popliteal lymph node. Indocyanine green (ICG) angiography was used to confirm vascularity of the flap. ICG lymphography was performed to evaluate lymphatic flow at 3 and 4 weeks postoperatively. Patent blue dye was injected into the ipsilateral hind paw to observe staining of the transferred lymph node at 4 weeks postoperatively. All transferred lymph nodes were then harvested and histologically evaluated by hematoxylin and eosin staining. RESULTS In 16 of the 25 mice, ICG lymphography showed reconnection between the transferred lymph node and the afferent lymphatic vessels, as confirmed by patent blue staining. Histologically, these transferred lymph nodes with afferent lymphatic reconnection significantly regressed in size (0.37 ± 0.24 mm2 ) and showed clear follicle formation, whereas those without afferent lymphatic reconnection showed less size regression (1.31 ± 1.17 mm2 ); the cell population was too dense to allow identification of follicles. CONCLUSIONS We established a mouse model of vascularized lymph node transfer with predictable afferent lymphatic reconnection. Both the vascularization and reconnection might be necessary for functional regeneration of the transferred lymph node.
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Affiliation(s)
- Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Taku Maeda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Furukawa
- Department of Plastic and Reconstructive Surgery, Aichi Medical University, Nagakute, Japan
| | - Akihiko Oyama
- Department of Plastic and Reconstructive Surgery, Fukushima Medical University, Fukushima, Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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23
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Osawa M. A new species of the Polyonyx sinensis group (Crustacea: Decapoda: Anomura: Porcellanidae) from the Central Philippines. Zootaxa 2018; 4486:393-400. [PMID: 30313753 DOI: 10.11646/zootaxa.4486.3.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Indexed: 11/04/2022]
Abstract
A new species of porcelain crab, Polyonyx angustus n. sp., is described on the basis of material collected from Panglao Island, the Central Philippines. It is morphologically allied to P. boucheti Osawa, 2007, P. pilosibrachium Osawa, Naruse Ng, 2018, and P. utinomii Miyake, 1943, but distinguished by the shape of the carapace and rostrum. Re-examination of the specimens from the Maldives previously referred to P. utinomii has showed that they belong to the new species instead. The present knowledge suggests that P. utinomii is distributed only in the Japanese main islands from central Honshu to Kyushu.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
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24
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Osawa M, Ng PKL. A new species of the genus Raphidopus Stimpson, 1858 (Crustacea: Decapoda: Anomura: Porcellanidae) from Peninsular Malaysia, with additional records of R. johnsoni Ng Nakasone, 1994 from Southeast Asia, and a key to species in the genus. Zootaxa 2018; 4433:111-126. [PMID: 30313241 DOI: 10.11646/zootaxa.4433.1.6] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 11/04/2022]
Abstract
A new species of the porcellanid genus Raphidopus Stimpson, 1858, is described on the basis of specimens from Penang and Kuala Selangor, Peninsular Malaysia. Raphidopus brevipes n. sp. is distinguished from its allied congeners, R. indicus Henderson, 1893 and R. johnsoni Ng Nakasone, 1994, by the proportionally narrower carapace and stouter ambulatory legs, as well as the different dentition on the cutting edge of the dactylus of the larger cheliped. Raphidopus johnsoni, previously known only by the holotype from Singapore, is now also recorded from Phuket (Thailand) and Java (Indonesia). Raphidopus indicus and R. johnsoni are rediagnosed on the basis of the respective type material and other specimens. A key to species of the genus Raphidopus is provided.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
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25
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Osawa M, Naruse T, Ng PKL. New records of species of the Polyonyx sinensis group (Crustacea: Decapoda: Anomura: Porcellanidae) from Japan, the Philippines, Singapore, and Malaysia, with descriptions of two new species. Zootaxa 2018; 4429:303-323. [PMID: 30313270 DOI: 10.11646/zootaxa.4429.2.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Indexed: 11/04/2022]
Abstract
Five species of the genus Polyonyx Stimpson, 1858 are reported from southern Japan, the Philippines, Singapore, and Peninsular Malaysia. All of them belong to the P. sinensis group, which is morphologically defined by having the dactyli of the ambulatory legs each with the dorsal claw being much smaller than the ventral claw. Two species are described as new to science, one each from Peninsular Malaysia and the Ryukyu Islands in Japan, and their affinities are discussed. Polyonyx boucheti Osawa, 2007, P. heok Osawa Ng, 2016, and P. thai Werding, 2001, are also newly reported from southern Japan, the Philippines, and Singapore. A key to the Indo-West Pacific species of the P. sinensis group is provided.
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Affiliation(s)
- Masayuki Osawa
- Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
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26
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Maeda T, Hayashi T, Furukawa H, Iwasaki D, Ishikawa K, Funayama E, Murao N, Osawa M, Oyama A, Yamamoto Y. Immune-mediated antitumor effect of a transplanted lymph node. Int J Cancer 2018; 143:1224-1235. [DOI: 10.1002/ijc.31414] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/23/2018] [Accepted: 03/13/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Taku Maeda
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Toshihiko Hayashi
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Hiroshi Furukawa
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Daisuke Iwasaki
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Kosuke Ishikawa
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Emi Funayama
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Naoki Murao
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Akihiko Oyama
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
| | - Yuhei Yamamoto
- Department of Plastic and Reconstructive Surgery; Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita-15 Nishi-7, Kita-ku; Sapporo City Hokkaido 060-8638 Japan
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27
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Sato T, Adachi M, Nakamura K, Zushi M, Goto K, Murakami T, Ishiguro K, Shichiji M, Saito K, Ikai T, Osawa M, Kondo I, Nagata S, Ishigaki K. The gross motor function measure is valid for Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Ishiguro K, Murakami T, Kajino S, Shichiji M, Sato T, Hayashi Y, Nakayama T, Kuru S, Osawa M, Nagata S, Ishigaki K. Characteristic findings of skeletal muscle MRI in childhood-onset Rippling muscle disease. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shichiji M, Ishigaki K, Ishiguro K, Sato T, Murakami T, Matsumura T, Osawa M, Nagata S. Results of a Japanese nationwide survey on congenital myotonic dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Ujihira K, Kurimoto Y, Maruyama R, Iba Y, Nishioka N, Yamada A, Nakanishi K, Kato H, Abe M, Narita Y, Osawa M. Alternative Treatment for Residual Aortobronchial Fistula After Thoracic Endovascular Aortic Repair. Innovations (Phila) 2017; 11:453-456. [PMID: 27918318 DOI: 10.1097/imi.0000000000000327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
A patient with an aortobronchial fistula secondary to a thoracic endovascular aortic repair was successfully treated with a re-thoracic endovascular aortic repair with debranching technique. Five months postoperatively, the aneurysm had shrunk; however, computed tomography revealed air in the thrombo-excluded aortic aneurysmal sac without signs of infection. Because of worsening air finding at the eighth month, we performed a resection of the residual fistula and wrapped the stent graft in a pedicled muscle flap.
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Affiliation(s)
- Kosuke Ujihira
- From the Departments of *Cardiovascular Surgery, †Thoracic Surgery, and ‡Plastic and Reconstructive Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
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Trivedi JN, Osawa M, Vachhrajani KD. A new species of the genus <i>Diogenes</i> Dana, 1851 (Crustacea: Decapoda: Anomura: Diogenidae) from Gujarat, northwestern India. Zootaxa 2016; 4208:zootaxa.4208.2.6. [PMID: 27988534 DOI: 10.11646/zootaxa.4208.2.6] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Indexed: 11/04/2022]
Abstract
A new species of diogenid hermit crab, Diogenes chhapgari n. sp., is described on the basis of material collected during the crustacean faunal survey along the coastal areas of the Gujarat State, northwestern India. The new species is referred to the D. edwardsii (De Haan, 1849) species group and appears closest to D. singaporensis Rahayu, 2015. However, D. chhapgari n. sp. is distinguished from this species by the armature on the fourth segment of the antennal peduncle and carpus of the left cheliped.
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Affiliation(s)
- Jigneshkumar N Trivedi
- Marine Biodiversity and Ecology Lab., Department of Zoology, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India..
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Ujihira K, Kurimoto Y, Maruyama R, Iba Y, Nishioka N, Yamada A, Nakanishi K, Kato H, Abe M, Narita Y, Osawa M. Alternative Treatment for Residual Aortobronchial Fistula after Thoracic Endovascular Aortic Repair. Innovations 2016. [DOI: 10.1177/155698451601100617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Kosuke Ujihira
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Yoshihiko Kurimoto
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Ryushi Maruyama
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Yutaka Iba
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Naritomo Nishioka
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Akira Yamada
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Katsuhiko Nakanishi
- Department of Cardiovascular Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Hiroaki Kato
- Department of Thoracic Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Masaru Abe
- Department of Thoracic Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Yoshiaki Narita
- Department of Thoracic Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Masayuki Osawa
- Department of Plastic and Reconstructive Surgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
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Ishigaki K, Ihara C, Mori-Yoshimura M, Murakami T, Sato T, Ishiguro K, Shichiji M, Nagata S, Kaiya H, Osawa M. Japanese nationwide registry for Fukuyama congenital muscular dystrophy patients. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.284] [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: 10/21/2022]
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Abstract
After several years of treatment for type 2 diabetes mellitus, a 69-year-old Japanese man developed an acute painful neuropathy, characterized by bilateral causalgia and dysaesthesia in his cheeks and around his eyes, typically 30 min to 3h after meals. As his glycaemic control deteriorated, his haemoglobin (Hb) A1c level gradually increased from 7-8% to 10.3% and his symptoms became more severe. The pain radiated out along the distribution of the ophthalmic and maxillary divisions of the trigeminal nerve. The patient was treated with insulin therapy and his HbA1c level decreased from 10.3% to 6.8% within 7 months. Five months after initiating insulin therapy, his symptoms showed a dramatic improvement. This was a very unusual case of bilateral acute painful neuropathy that involved the ophthalmic and maxillary divisions of the trigeminal nerve, and in which aggravation of the symptoms clearly related to poor glycaemic control.
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Affiliation(s)
- S Takayama
- Diabetes Centre, Tokyo Women's Medical University School of Medicine, Tokyo, Japan.
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Tanahashi Y, Kondo H, Osawa M, Yamamoto T, Kawada H, Goshima S, Furui S. Transcatheter arterial embolization for primary postpartum hemorrhage: predictive factors for embolic material conversion of gelatin sponge particles to N-Butyl cyanoacrylate. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Osawa M. A new strikingly-colored species of the genus Galathea Fabricius, 1793 (Crustacea: Decapoda: Anomura: Galatheidae) from the Ryukyu Islands, Japan. Zootaxa 2015; 4039:591-8. [PMID: 26624645 DOI: 10.11646/zootaxa.4039.4.9] [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] [Received: 11/05/2015] [Indexed: 11/04/2022]
Abstract
A new shallow-water squat lobster, Galathea ryuguu, is described on the basis of material obtained from a colony of unidentified sea fan of the genus Muricella Verrill, 1868. The new species is most closely allied to G. squamea Baba, 1979, but is distinguished by the ornamentation and armature of the carapace, third maxilliped, and ambulatory legs.
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Affiliation(s)
- Masayuki Osawa
- Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan.;
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Shichiji M, Ishigaki K, Ishiguro K, Sato T, Murakami T, Muto A, Osawa M, Nagata S. Perinatal complications in patients with congenital myotonic dystrophy. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.100] [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: 11/29/2022]
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Ito M, Murakami M, Saito M, Niwa A, Osawa M, Nakahata T, Nishimoto N. AB0100 Monocytes Differentiated from IPS Cells Derived from Rheumatoid Arthritis Patients Express More M-Scf-Receptor Together with Rank Than Those from Healthy Donors Resulting in the Accelerated Osteoclastgenesis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ishiguro K, Ishigaki K, Sato T, Murakami T, Saito K, Osawa M, Nagata S. G.P.318. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sato T, Ishigaki K, Shichiji M, Saito T, Murakami T, Saito K, Osawa M, Nagata S. G.P.316. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.406] [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: 12/01/2022]
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Osawa M, Safaie M. Two squat lobster species (Crustacea: Decapoda: Anomura) from the Persian Gulf, with description of a new species of Raymunida Macpherson & Machordom, 2000. Zootaxa 2014; 3861:265-74. [PMID: 25283407 DOI: 10.11646/zootaxa.3861.3.4] [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] [Received: 09/12/2014] [Indexed: 11/04/2022]
Abstract
Galathea ternatensis De Man, 1902 and Raymunida iranica n. sp., are reported from the Iranian coast as the first records of squat lobster species from the Persian Gulf. The new species morphologically resembles R. cagnetei Macpherson & Machordom, 2000, but is unique in the genus in having a small spine near the base of each supraocular spine and a spine ventral to the second branchial marginal spine of the carapace.
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Affiliation(s)
- Masayuki Osawa
- Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan.;
| | - Mohsen Safaie
- Fisheries Department, Hormozgan University, Bandar Abbas, PO Box:3995, Iran.;
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Murakami T, Ishigaki K, Sato T, Osawa M. P.8.4 Steroid Treatment for exacerbation of muscle weakness after viral infection in Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sato T, Ishigaki K, Murakami T, Saito K, Osawa M. P.8.3 Chronic respiratory failure in patients with Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ishigaki K, Murakami T, Saito T, Sato T, Kato I, Osawa M. P.8.5 Therapeutic intervention for dysphagia in patients with Fukuyama congenital muscular dystrophy. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.506] [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: 10/26/2022]
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Osawa M, Kawai T, Sakamaki T. New records of Pagurixus Melin, 1939 (Crustacea: Decapoda: Paguridae) from the Ryukyu Islands, southwestern Japan, with description of a new species. Zootaxa 2013; 3669:350-66. [PMID: 26312347 DOI: 10.11646/zootaxa.3669.3.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Seven hermit crab species of the pagurid genus Pagurixus Melin, 1939 are reported on the basis of material recently collected from the northern and central islands of the Ryukyu Islands, southwestern Japan. Four species are new to the hermit crab fauna of the Ryukyu Islands: P. acanthocarpus Komai & Okuno, 2009; P. fasciatus Komai & Myorin, 2005; P. formosus Komai, 2010; and P. tweediei (Forest, 1956). One species is described as new to science: P vicinus sp. nov. is closely similar to P. fasciatus in both morphology and coloration, but distinguished by the armature on the left cheliped and right second pereopod. Paguruxus carininanus Komai & Osawa, 2006 and P. pseliophorus Komai & Osawa, 2006, both previously known from the Ryukyu Islands, are here reported from new localities.
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Affiliation(s)
- Masayuki Osawa
- Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shiniane 690-8504, Japan.
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Osawa M, Uyeno D. A new subtidal species of the genus Petrolisthes Stimpson, 1858 (Crustacea: Decapoda: Porcellanidae) from Okinawa, with an account of species of the genus known from the Ryukyu Islands, southwestern Japan. Zootaxa 2013; 3670:329-38. [PMID: 26438943 DOI: 10.11646/zootaxa.3670.3.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A new porcellanid crab, Petrolisthes uruma sp. nov., is described based on a single specimen collected from Okinawajima Island in the Ryukyus, southwestern Japan. The unique holotype was collected from a subtidal depth of 10 m, though vast majority of the genus occur in intertidal to shallow subtidal zone. The new species is morphologically closest to P. noluccensis (De Man, 1888), but is distinguished by the weaker striation on the carapace, the proportionally longer carpus of the cheliped, the number of the anterior marginal teeth of the carpus of the cheliped, and the meri of the second and third pereopods each with a much stronger spine at the lateroventral distal angle. A brief note on species of Petrolisthes presently known from the Ryukyu Islands is given.
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Affiliation(s)
- Masayuki Osawa
- Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan.
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Sato T, Hayashi Y, Noguchi S, Osawa M, Nonaka I, Nishino I. G.P.39 DNAJB6 myopathy in Japanese cohort. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.098] [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: 10/28/2022]
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Yoshida R, Osawa M, Hirose M, Hirose E. A new genus and two new species of Peltogastridae (Crustacea: Cirripedia: Rhizocephala) parasitizing hermit crabs from Okinawa Island (Ryukyu Archipelago, Japan), and their DNA-barcodes. Zoolog Sci 2012; 28:853-62. [PMID: 22035309 DOI: 10.2108/zsj.28.853] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new genus and two new species of Peltogastridae, Peltogaster postica sp. nov. and Ommatogaster nana gen. et sp. nov., are described from Okinawa Island, Ryukyu Islands, southwestern Japan. The two new rhizocephalans were found to be parasitic on the estuarine hermit crabs, Pagurus minutus Hess, 1865 and Diogenes leptocerus Forest, 1956, respectively. Peltogaster postica sp. nov. is allied to P. curvata Kossmann, 1874, P. paguri Rathke, 1842 , and P. reticulata Shiino, 1943 , but is distinguished by its relative length and internal and external structures of the mature externa. Ommatogaster gen. nov. is established for the present new species O. nana based on the morphologies of the visceral mass of the externa and the presence of a nauplius eye in the larvae. Partial COI sequences were obtained from the two new species and one known species, Dipterosaccus indicus Van Kampen and Boschma, 1925, to test the possible usefulness of the sequences as tags for species identification.
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Affiliation(s)
- Ryuta Yoshida
- Faculty of Science, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa 903-0213, Japan.
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