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Amimoto S, Ishii M, Tanaka K, Araki S, Kuwamura M, Suga S, Kondo E, Shibata E, Kusuhara K, Yoshino K. Alagille-like syndrome with surprising karyotype: a case report. J Med Case Rep 2023; 17:186. [PMID: 37101309 PMCID: PMC10131304 DOI: 10.1186/s13256-023-03810-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/08/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Chromosome 5p partial monosomy (5p-syndrome) and chromosome 6p partial trisomy are chromosomal abnormalities that result in a variety of symptoms, but liver dysfunction is not normally one of them. Alagille syndrome (OMIM #118450) is a multisystem disorder that is defined clinically by hepatic bile duct paucity and cholestasis, in association with cardiac, skeletal, and ophthalmologic manifestations, and characteristic facial features. Alagille syndrome is caused by mutations in JAG1 on chromosome 20 or NOTCH2 on chromosome 1. Here, we report a preterm infant with karyotype 46,XX,der(5)t(5,6)(p15.2;p22.3) and hepatic dysfunction, who was diagnosed as having incomplete Alagille syndrome. CASE PRESENTATION The Japanese infant was diagnosed based on the cardiac abnormalities, ocular abnormalities, characteristic facial features, and liver pathological findings. Analysis of the JAG1 and NOTCH sequences failed to detect any mutations in these genes. CONCLUSIONS These results suggest that, besides the genes that are known to be responsible for Alagille syndrome, other genetic mutations also may cause Alagille syndrome.
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Affiliation(s)
- S Amimoto
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - M Ishii
- Department of Pediatrics, Kitakyushu General Hospital, 1-1 Higashijonochou, Kokurakita-Ku, Kitakyushu-City, 802-8517, Japan.
| | - K Tanaka
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - S Araki
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - M Kuwamura
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - S Suga
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - E Kondo
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - E Shibata
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - K Kusuhara
- Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - K Yoshino
- Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, Kitakyushu, Japan
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Suzuki Y, Ishiyama K, Yoon DK, Takegahara-Tamakawa Y, Kondo E, Suganami M, Wada S, Miyake C, Makino A. Suppression of chloroplast triose phosphate isomerase evokes inorganic phosphate-limited photosynthesis in rice. Plant Physiol 2022; 188:1550-1562. [PMID: 34893891 PMCID: PMC8896644 DOI: 10.1093/plphys/kiab576] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/14/2021] [Indexed: 05/12/2023]
Abstract
The availability of inorganic phosphate (Pi) for ATP synthesis is thought to limit photosynthesis at elevated [CO2] when Pi regeneration via sucrose or starch synthesis is limited. We report here another mechanism for the occurrence of Pi-limited photosynthesis caused by insufficient capacity of chloroplast triose phosphate isomerase (cpTPI). In cpTPI-antisense transgenic rice (Oryza sativa) plants with 55%-86% reductions in cpTPI content, CO2 sensitivity of the rate of CO2 assimilation (A) decreased and even reversed at elevated [CO2]. The pool sizes of the Calvin-Benson cycle metabolites from pentose phosphates to 3-phosphoglycerate increased at elevated [CO2], whereas those of ATP decreased. These phenomena are similar to the typical symptoms of Pi-limited photosynthesis, suggesting sufficient capacity of cpTPI is necessary to prevent the occurrence of Pi-limited photosynthesis and that cpTPI content moderately affects photosynthetic capacity at elevated [CO2]. As there tended to be slight variations in the amounts of total leaf-N depending on the genotypes, relationships between A and the amounts of cpTPI were examined after these parameters were expressed per unit amount of total leaf-N (A/N and cpTPI/N, respectively). A/N at elevated [CO2] decreased linearly as cpTPI/N decreased before A/N sharply decreased, owing to further decreases in cpTPI/N. Within this linear range, decreases in cpTPI/N by 80% led to decreases up to 27% in A/N at elevated [CO2]. Thus, cpTPI function is crucial for photosynthesis at elevated [CO2].
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
- Author for communication:
| | - Keiki Ishiyama
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Dong-Kyung Yoon
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | | | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Mao Suganami
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Shinya Wada
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
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3
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Qu Y, Sakoda K, Fukayama H, Kondo E, Suzuki Y, Makino A, Terashima I, Yamori W. Overexpression of both Rubisco and Rubisco activase rescues rice photosynthesis and biomass under heat stress. Plant Cell Environ 2021; 44:2308-2320. [PMID: 33745135 DOI: 10.1111/pce.14051] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/09/2021] [Accepted: 03/11/2021] [Indexed: 05/15/2023]
Abstract
Global warming threatens food security by decreasing crop yields through damage to photosynthetic systems, especially Rubisco activation. We examined whether co-overexpression of Rubisco and Rubisco activase improves the photosynthetic and growth performance of rice under high temperatures. We grew three rice lines-the wild-type (WT), a Rubisco activase-overexpressing line (oxRCA) and a Rubisco- and Rubisco activase-co-overexpressing line (oxRCA-RBCS)-and analysed photosynthesis and biomass at 25 and 40°C. Compared with the WT, the Rubisco activase content was 153% higher in oxRCA and 138% higher in oxRCA-RBCS, and the Rubisco content was 27% lower in oxRCA and similar in oxRCA-RBCS. The CO2 assimilation rate (A) of WT was lower at 40°C than at 25°C, attributable to Rubisco deactivation by heat. On the other hand, that of oxRCA and oxRCA-RBCS was maintained at 40°C, resulting in higher A than WT. Notably, the dry weight of oxRCA-RBCS was 26% higher than that of WT at 40°C. These results show that increasing the Rubisco activase content without the reduction of Rubisco content could improve yield and sustainability in rice at high temperature.
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Affiliation(s)
- Yuchen Qu
- Graduate School of Agricultural and Life Science, Institute for Sustainable Agri-ecosystem, The University of Tokyo, Tokyo, Japan
| | - Kazuma Sakoda
- Graduate School of Agricultural and Life Science, Institute for Sustainable Agri-ecosystem, The University of Tokyo, Tokyo, Japan
- Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan
| | - Hiroshi Fukayama
- Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Yuji Suzuki
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
- Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Ichiro Terashima
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Wataru Yamori
- Graduate School of Agricultural and Life Science, Institute for Sustainable Agri-ecosystem, The University of Tokyo, Tokyo, Japan
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4
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Suzuki Y, Ishiyama K, Sugawara M, Suzuki Y, Kondo E, Takegahara-Tamakawa Y, Yoon DK, Suganami M, Wada S, Miyake C, Makino A. Overproduction of Chloroplast Glyceraldehyde-3-Phosphate Dehydrogenase Improves Photosynthesis Slightly under Elevated [CO2] Conditions in Rice. Plant Cell Physiol 2021; 62:156-165. [PMID: 33289530 DOI: 10.1093/pcp/pcaa149] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Chloroplast glyceraldehyde-3-phosphate dehydrogenase (GAPDH) limits the regeneration of ribulose 1,5-bisphosphate (RuBP) in the Calvin-Benson cycle. However, it does not always limit the rate of CO2 assimilation. In the present study, the effects of overproduction of GAPDH on the rate of CO2 assimilation under elevated [CO2] conditions, where the capacity for RuBP regeneration limits photosynthesis, were examined in transgenic rice (Oryza sativa). GAPDH activity was increased to 3.2- and 4.5-fold of the wild-type levels by co-overexpression of the GAPDH genes, GAPA and GAPB, respectively. In the transgenic rice plants, the rate of CO2 assimilation under elevated [CO2] conditions increased by approximately 10%, whereas that under normal and low [CO2] conditions was not affected. These results indicate that overproduction of GAPDH is effective in improving photosynthesis under elevated [CO2] conditions, although its magnitude is relatively small. By contrast, biomass production of the transgenic rice plants was not greater than that of wild-type plants under elevated [CO2] conditions, although starch content tended to increase marginally.
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Affiliation(s)
- Yuji Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Keiki Ishiyama
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Misaki Sugawara
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Yuka Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | | | - Dong-Kyung Yoon
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Mao Suganami
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
| | - Shinya Wada
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, 020-8550 Japan
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501 Japan
| | - Chikahiro Miyake
- Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe, 657-8501 Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572 Japan
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5
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Kojima Y, Yamaguchi T, Taguchi S, Kondo E, Yokoyama M, Shirayama S, Nikaido T, Yanagida O. Ascending Colon Schwannoma Surgically Treated after Accurate Preoperative Diagnosis. Case Rep Gastroenterol 2020; 14:483-490. [PMID: 33250686 PMCID: PMC7670325 DOI: 10.1159/000509542] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/16/2020] [Indexed: 12/20/2022] Open
Abstract
Colorectal schwannomas are rare and usually benign gastrointestinal mesenchymal tumors. However, these tumors are often overtreated, possibly owing to misleading malignant potential. To our knowledge, there have been no previous reports of ascending colon schwannoma preoperatively diagnosed as benign schwannoma. Herein, we report a case of ascending colon schwannoma accurately diagnosed by endoscopic biopsy and successfully treated by wedge resection. The patient was a 76-year-old woman with complaints of bloody stool. She had no relevant past medical history. Radiological findings revealed a protruded mass in the ascending colon, and colonoscopy revealed a submucosal tumor measuring approximately 3 cm in diameter with a reddish and uneven surface. Histological and immunohistochemical analysis for vimentin and S100 protein of the specimen obtained by endoscopic biopsy confirmed the diagnosis of schwannoma. Thus, we performed laparoscopy-assisted endoscopic full-thickness resection of the ascending colon wall, as appropriate for a benign soft tissue tumor. The postoperative course has been uneventful for 2 years. This case demonstrates that colonic schwannoma can be successfully treated with adequate resection if an accurate preoperative diagnosis is made, thereby avoiding overtreatment, such as surgery for colorectal tumor including lymph node dissection. Preoperatively diagnosed schwannomas should be treated by wedge resection, with postoperative pathological findings confirming the presence or absence of malignancy. Additional resection should be considered for very rare cases of coexisting malignant tissue.
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Affiliation(s)
- Yohei Kojima
- Department of Surgery, Kosei Hospital, Tokyo, Japan.,Department of Surgery, Kyorin University Hospital, Tokyo, Japan
| | | | | | - Eri Kondo
- Department of Surgery, Kosei Hospital, Tokyo, Japan
| | | | | | - Takashi Nikaido
- Department of Diagnostic Pathology, Kosei Hospital, Tokyo, Japan
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6
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Otagiri H, Yamadav S, Hashidume M, Sakurai A, Morioka M, Kondo E, Sakai H, Kurita H. A clinical investigation of the association between perioperative oral management and prognostic nutritional index in patients with digestive and urinary cancers. Curr Oncol 2020; 27:257-262. [PMID: 33173377 PMCID: PMC7606050 DOI: 10.3747/co.27.5963] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background The prognostic nutritional index (pni) is a simple metric calculated using serum albumin and the peripheral lymphocyte count. It was reported that a low pni score is significantly associated with major postoperative complications and poor prognosis. The purpose of the present study was to investigate the effects of perioperative oral management (pom) on the perioperative pni profiles of patients with digestive system or urinary cancers. Study Design The medical records of 181 patients with cancer who underwent surgery and for whom a pni could be calculated were retrospectively reviewed. Results The intervention rate with pom was 34.8%. The median preoperative pni score was 48.25 in all patients with a pom intervention [25% to 75% interquartile range (iqr): 44.38-54.13] and 47.25 in those without an intervention (iqr: 42.0-53.5). Compared with patients not receiving pom, those who received pom had significantly higher pni scores from the early postoperative period (p < 0.05). Notably, of patients who could resume oral intake within 3 days after surgery, those who received pom intervention, compared with those who did not, had significantly higher pni scores from the early postoperative period (p < 0.05). Conclusions Perioperative oral management interventions might have positive effects on the postoperative pni scores of patients with cancer.
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Affiliation(s)
- H Otagiri
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - S Yamadav
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Hashidume
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - A Sakurai
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - M Morioka
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - E Kondo
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - H Sakai
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - H Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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7
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Ito K, Nakagawa M, Hori K, Tashima L, Goto M, Yanagida S, Suzuki J, Kaya R, Kawabata A, Park J, Nasu H, Nishio S, Kondo E, Kaneda M, Tsubamoto H, Arakawa A, Nagasawa T, Yamada K. 834P A phase II study of gemcitabine, cisplatin, and bevacizumab for first recurrent and refractory ovarian clear-cell carcinoma (KCOG-G1601 trial). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.973] [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] Open
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8
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Makino A, Kaneta Y, Obara M, Ishiyama K, Kanno K, Kondo E, Suzuki Y, Mae T. High yielding ability of a large-grain rice cultivar, Akita 63. Sci Rep 2020; 10:12231. [PMID: 32699370 PMCID: PMC7376063 DOI: 10.1038/s41598-020-69289-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 03/19/2020] [Accepted: 07/09/2020] [Indexed: 01/22/2023] Open
Abstract
To increase the yield potential while limiting the environmental impact of N management practices is an important issue in rice cultivation. The large-grain rice cultivar Akita 63 showed higher N-use efficiency for grain production. To elucidate this, we analyzed yield characteristics of Akita 63 in comparison with those of a maternal cultivar, Oochikara with a large grain, a paternal cultivar, Akita 39 with a normal grain, and a Japanese leading cultivar, Akitakomachi. The yields of Akita 63 were 20% higher than those of Oochikara and Akita 39, and 50% higher than those of Akitakomachi for the same N application. Akita 63 showed superior N uptake capacity. Whereas a trade-off between single grain weight and grain number was found for Oochikara, Akita 63 did not show such a relationship. The success in Akita 63 breeding was due to overcoming such a trade-off. Akita 63 had the large-grain alleles of GS3 and qSW5. Thus, an enlargement of grain size can have a great impact on an increase in yield with improved N-use efficiency. However, an enlargement of sink capacity led to source limitation. Thus, both sink and source improvements are essential for a further increase in the yield of today's high-yielding cultivars.
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Affiliation(s)
- Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan.
| | - Yoshihiro Kaneta
- Faculty of Bioresource Sciences, Akita Prefectural University, Shimosinjyou, Akita, 010-0195, Japan
| | - Mitsuhiro Obara
- Japan International Research Center for Agricultural Sciences, Tsukuba, Ibaraki, 305-8686, Japan
| | - Keiki Ishiyama
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Keiichi Kanno
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
| | - Yuji Suzuki
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
- Faculty of Agriculture, Iwate University, Morioka, 020-8550, Japan
| | - Tadahiko Mae
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai, 980-8572, Japan
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9
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Shido K, Kondo E, Kojima K, Yamasaki K, Aiba S. 883 ‘DermAnnotation’ is All You Need; methodology to transfer knowledges of dermatologists to artificial intelligence. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.899] [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: 11/16/2022]
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10
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Suganami M, Suzuki Y, Kondo E, Nishida S, Konno S, Makino A. Effects of Overproduction of Rubisco Activase on Rubisco Content in Transgenic Rice Grown at Different N Levels. Int J Mol Sci 2020; 21:ijms21051626. [PMID: 32120887 PMCID: PMC7084177 DOI: 10.3390/ijms21051626] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/12/2020] [Accepted: 02/26/2020] [Indexed: 11/16/2022] Open
Abstract
It has been reported that overproduction of Rubisco activase (RCA) in rice (Oryza sativa L.) decreased Rubisco content, resulting in declining photosynthesis. We examined the effects of RCA levels on Rubisco content using transgenic rice with overexpressed or suppressed RCA under the control of different promoters of the RCA and Rubisco small subunit (RBCS) genes. All plants were grown hydroponically with different N concentrations (0.5, 2.0 and 8.0 mM-N). In RCA overproduced plants with > 2-fold RCA content (RCA-HI lines), a 10%-20% decrease in Rubisco content was observed at 0.5 and 2.0 mM-N. In contrast, at 8.0 mM-N, Rubisco content did not change in RCA-HI lines. Conversely, in plants with 50%-60% increased RCA content (RCA-MI lines), Rubisco levels remained unchanged, regardless of N concentration. Such effects on Rubisco content were independent of the promoter that was used. In plants with RCA suppression to < 10% of the wild-type RCA content, Rubisco levels were increased at 0.5 mM-N, but were unchanged at 2.0 and 8.0 mM-N. Thus, the effects of the changes in RCA levels on Rubisco content depended on N supply. Moreover, RCA overproduction was feasible without a decrease in Rubisco content, depending on the degree of RCA production.
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Affiliation(s)
- Mao Suganami
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai 980-8572, Japan; (M.S.); (E.K.); (S.N.); (S.K.)
| | - Yuji Suzuki
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan;
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai 980-8572, Japan; (M.S.); (E.K.); (S.N.); (S.K.)
| | - Shinji Nishida
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai 980-8572, Japan; (M.S.); (E.K.); (S.N.); (S.K.)
| | - So Konno
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai 980-8572, Japan; (M.S.); (E.K.); (S.N.); (S.K.)
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aramaki-Aoba, Aoba-ku, Sendai 980-8572, Japan; (M.S.); (E.K.); (S.N.); (S.K.)
- Correspondence: ; Tel.: +81-22-757-4287
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11
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Yahara H, Horita S, Yanamoto S, Kitagawa Y, Asaka T, Yoda T, Morita K, Michi Y, Takechi M, Shimasue H, Maruoka Y, Kondo E, Kusukawa J, Tsujiguchi H, Sato T, Kannon T, Nakamura H, Tajima A, Hosomichi K, Yahara K. A Targeted Genetic Association Study of the Rare Type of Osteomyelitis. J Dent Res 2020; 99:271-276. [PMID: 31977282 DOI: 10.1177/0022034520901519] [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] [Indexed: 12/14/2022] Open
Abstract
Chronic nonbacterial osteomyelitis is a rare bone disorder that can be found in the jaw. It is often associated with systemic conditions, including autoimmune deficiencies. However, little is known about how the genetic and immunologic background of patients influences the disease. Here, we focus on human leukocyte antigen (HLA), killer cell immunoglobulin-like receptors (KIRs), and their specific combinations that have been difficult to analyze owing to their high diversity. We employed a recently developed technology of simultaneous typing of HLA alleles and KIR haplotype and investigated alleles of the 35 HLA loci and KIR haplotypes composed of centromeric and telomeric motifs in 18 cases and 18 controls for discovery and 472 independent controls for validation. We identified an amino acid substitution of threonine at position 94 of HLA-C in combination with the telomeric KIR genotype of haplotype tA01/tB01 that had significantly higher frequency (>20%) in the case population than in both control populations. Multiple logistic regression analysis based on a dominant model with adjustments for age and sex revealed and validated its statistical significance and high predictive accuracy (C-statistic ≥0.85). Structure-based analysis revealed that the combination of the amino acid change in HLA-C and the telomeric genotype tA01/tB01 could be associated with lower stability of HLA-C. This is the first case-control study of a rare disease that employed the latest sequencing technology enabling simultaneous typing and investigated amino acid polymorphisms at HLA loci in combination with KIR haplotype.
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Affiliation(s)
- H Yahara
- Department of Molecular Immunology and Inflammation, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - S Horita
- Department of Bioregulation and Pharmacological Medicine, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - S Yanamoto
- Department of Clinical Oral Oncology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Y Kitagawa
- Department of Oral Diagnosis and Medicine, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - T Asaka
- Department of Oral Diagnosis and Medicine, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - T Yoda
- Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - K Morita
- Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Bioresource Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Michi
- Department of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - M Takechi
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - H Shimasue
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Maruoka
- Department of Oral and Maxillofacial Surgery, Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan
| | - E Kondo
- Department of Dentistry and Oral Surgery, School of Medicine, Shinshu University, Matsumoto, Japan
| | - J Kusukawa
- Dental and Oral Medical Center, School of Medicine, Kurume University, Fukuoka, Japan
| | - H Tsujiguchi
- Department of Environmental and Preventive Medicine, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - T Sato
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - T Kannon
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - H Nakamura
- Department of Environmental and Preventive Medicine, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - A Tajima
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - K Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - K Yahara
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
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12
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Kondo E, Shimizu-Koresawa R, Chihara D, Mizuta S, Izutsu K, Ikegame K, Uchida N, Fukuda T, Ichinohe T, Atsuta Y, Suzuki R. ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION FOR PRIMARY MEDIASTINAL LARGE B-CELL LYMPHOMA PATIENTS RELAPSING AFTER HIGH DOSE CHEMOTHERAPY WITH AUTOLOGOUS STEM CELL TRANSPLANTATION: DATA FROM THE JAPAN SOCIETY FOR HEMATOPOIETIC CELL TRANSPLANTATION. Hematol Oncol 2019. [DOI: 10.1002/hon.75_2630] [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: 11/09/2022]
Affiliation(s)
- E. Kondo
- Dept. of Hematology; Kawasaki Medical School; Kurashiki Japan
| | | | - D. Chihara
- Medical Oncology Service; Center for Cancer Research, National Cancer Institute; Bethesda United States
| | - S. Mizuta
- Department of Hematology and Immunology; Kanazawa Medical University; Uchinada Japan
| | - K. Izutsu
- Department of Hematology; National Cancer Center Hospital; Tokyo Japan
| | - K. Ikegame
- Division of Hematology; Department of Internal Medicine, Hyogo College of Medicine; Nishinomiya Japan
| | - N. Uchida
- Department of Hematology; Toranomon Hospital; Tokyo Japan
| | - T. Fukuda
- Department of Hematopoietic Stem Cell Transplantation Division; National Cancer Center Hospital; Tokyo Japan
| | - T. Ichinohe
- Department of Hematology and Oncology; Research Institute for Radiation Biology and Medicine, Hiroshima University; Hiroshima Japan
| | - Y. Atsuta
- Department of Healthcare Administration; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - R. Suzuki
- Department of Oncology/Haematology; Shimane University Hospital; Izumo Japan
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13
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Hasegawa T, Hayashida S, Kondo E, Takeda Y, Miyamoto H, Kawaoka Y, Ueda N, Iwata E, Nakahara H, Kobayashi M, Soutome S, Yamada SI, Tojyo I, Kojima Y, Umeda M, Fujita S, Kurita H, Shibuya Y, Kirita T, Komori T. Medication-related osteonecrosis of the jaw after tooth extraction in cancer patients: a multicenter retrospective study. Osteoporos Int 2019; 30:231-239. [PMID: 30406309 DOI: 10.1007/s00198-018-4746-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/17/2018] [Indexed: 11/29/2022]
Abstract
UNLABELLED Root amputation, immunosuppressive therapy, mandibular tooth extraction, pre-existing inflammation, and longer duration of treatment with bone-modifying agents were significantly associated with an increased risk of medication-related osteonecrosis of the jaw. Hopeless teeth should be extracted without drug holiday before the development of inflammation in cancer patients receiving high-dose bone-modifying agents. INTRODUCTION No studies have comprehensively analyzed the influence of pre-existing inflammation, surgical procedure-related factors such as primary wound closure, demographic factors, and drug holiday on the incidence of medication-related osteonecrosis of the jaw (MRONJ). The purpose of this study was to retrospectively investigate the relationships between these various factors and the development of MRONJ after tooth extraction in cancer patients receiving high-dose bone-modifying agents (BMAs) such as bisphosphonates or denosumab. METHODS Risk factors for MRONJ after tooth extraction were evaluated with univariate and multivariate analyses. The following parameters were investigated in all patients: demographics, type and duration of BMA use, whether BMA use was discontinued before tooth extraction (drug holiday), the duration of such discontinuation, the presence of pre-existing inflammation, and whether additional surgical procedures (e.g., incision, removal of bone edges, root amputation) were performed. RESULTS We found that root amputation (OR = 22.62), immunosuppressive therapy (OR = 16.61), extraction of mandibular teeth (OR = 12.14), extraction of teeth with pre-existing inflammation, and longer duration (≥ 8 months) of high-dose BMA (OR = 7.85) were all significantly associated with MRONJ. CONCLUSIONS Tooth extraction should not necessarily be postponed in cancer patients receiving high-dose BMA. The effectiveness of a short-term drug holiday was not confirmed, as drug holidays had no significant impact on MRONJ incidence. Tooth extraction may be acceptable during high-dose BMA therapy until 8 months after initiation.
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Affiliation(s)
- T Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - S Hayashida
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - E Kondo
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Takeda
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama, Japan
| | - H Miyamoto
- Department of Oral Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Y Kawaoka
- Department of Dentistry and Oral Surgery, Kansai Medical University, Hirakata, Japan
| | - N Ueda
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - E Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
- Department of Oral and Maxillofacial Surgery, Kakogawa Central City Hospital, Kakogawa, Japan
| | - H Nakahara
- Department of Oral and Maxillofacial Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Kobayashi
- Department of Oral and Maxillofacial Surgery, Shin-Suma General Hospital, Kobe, Japan
| | - S Soutome
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S I Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - I Tojyo
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama, Japan
| | - Y Kojima
- Department of Dentistry and Oral Surgery, Kansai Medical University, Hirakata, Japan
| | - M Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Fujita
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama, Japan
| | - H Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Y Shibuya
- Department of Oral Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - T Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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14
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Fujii T, Hirota K, Yasoda A, Takizawa A, Morozumi N, Nakamura R, Yotsumoto T, Kondo E, Yamashita Y, Sakane Y, Kanai Y, Ueda Y, Yamauchi I, Yamanaka S, Nakao K, Kuwahara K, Jindo T, Furuya M, Mashimo T, Inagaki N, Serikawa T, Nakao K. Rats deficient C-type natriuretic peptide suffer from impaired skeletal growth without early death. PLoS One 2018; 13:e0194812. [PMID: 29566041 PMCID: PMC5864047 DOI: 10.1371/journal.pone.0194812] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/09/2018] [Indexed: 12/22/2022] Open
Abstract
We have previously investigated the physiological role of C-type natriuretic peptide (CNP) on endochondral bone growth, mainly with mutant mouse models deficient in CNP, and reported that CNP is indispensable for physiological endochondral bone growth in mice. However, the survival rate of CNP knockout (KO) mice fell to as low as about 70% until 10 weeks after birth, and we could not sufficiently analyze the phenotype at the adult stage. Herein, we generated CNP KO rats by using zinc-finger nuclease-mediated genome editing technology. We established two lines of mutant rats completely deficient in CNP (CNP KO rats) that exhibited a phenotype identical to that observed in mice deficient in CNP, namely, a short stature with severely impaired endochondral bone growth. Histological analysis revealed that the width of the growth plate, especially that of the hypertrophic chondrocyte layer, was markedly lower and the proliferation of growth plate chondrocytes tended to be reduced in CNP KO rats. Notably, CNP KO rats did not have malocclusions and survived for over one year after birth. At 33 weeks of age, CNP KO rats persisted significantly shorter than wild-type rats, with closed growth plates of the femur in all samples, which were not observed in wild-type rats. Histologically, CNP deficiency affected only bones among all body tissues studied. Thus, CNP KO rats survive over one year, and exhibit a deficit in endochondral bone growth and growth retardation throughout life.
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Affiliation(s)
- Toshihito Fujii
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Keisho Hirota
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akihiro Yasoda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
- * E-mail:
| | - Akiko Takizawa
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | | | | | | | - Eri Kondo
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yui Yamashita
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoriko Sakane
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yugo Kanai
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yohei Ueda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ichiro Yamauchi
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shigeki Yamanaka
- Department of Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kazumasa Nakao
- Department of Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Koichiro Kuwahara
- Department of Cardiovascular Medicine, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | | | - Mayumi Furuya
- Asubio Pharma Co., Ltd., Kobe, Japan
- Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tomoji Mashimo
- Genome Editing Research and Development (R&D) Center and Institute of Experimental Animal Sciences, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Nobuya Inagaki
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tadao Serikawa
- Laboratory of Pharmacology, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Kazuwa Nakao
- Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
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15
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Yamauchi I, Sakane Y, Yamashita T, Hirota K, Ueda Y, Kanai Y, Yamashita Y, Kondo E, Fujii T, Taura D, Sone M, Yasoda A, Inagaki N. Effects of growth hormone on thyroid function are mediated by type 2 iodothyronine deiodinase in humans. Endocrine 2018; 59:353-363. [PMID: 29274063 DOI: 10.1007/s12020-017-1495-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 12/05/2017] [Indexed: 11/30/2022]
Abstract
PURPOSE Growth hormone (GH) therapy in adults alters thyroid function, and acromegaly often involves thyroid disease. The present study aimed to elucidate roles and mechanisms of GH in regulating thyroid function. METHODS We performed two retrospective observational studies, which focused on consecutive patients with severe adult GH deficiency who received recombinant human GH (rhGH) therapy (n = 20) and consecutive patients with acromegaly who underwent transsphenoidal surgery (TSS) (n = 25). In both studies, serum free triiodothyronine (fT3), free thyroxine (fT4), and fT3/fT4 ratio were examined before and after the interventions. We subsequently administered GH to four human cell lines (HepG2, TSA201, MCF7, and HTC/C3) in vitro, and examined changes in mRNA levels of iodothyronine deiodinases (D1, D2, and D3). RESULTS Median serum fT3 level significantly increased after rhGH therapy from 2.38 to 2.78 pg/mL (p < 0.001), and fT4 decreased from 1.115 to 1.065 ng/dL (p = 0.081). TSS significantly decreased median serum fT3 from 3.03 to 2.53 pg/mL (p < 0.001), and increased fT4 from 1.230 to 1.370 ng/dL (p < 0.001). In vitro, GH significantly increased D2 expression at the mRNA level in HTC/C3 cells (p < 0.01), as well as D2 protein and its activity. CONCLUSIONS GH increased serum fT3 level and decreased serum fT4 level in humans. Our results suggest that its mechanism involves D2 upregulation. Considering this GH effect on thyroid hormone metabolism, data on thyroid function could be useful in the management of GH deficiency and acromegaly.
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Affiliation(s)
- Ichiro Yamauchi
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Yoriko Sakane
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Preemptive Medicine and Lifestyle Disease Research Center, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Takafumi Yamashita
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Keisho Hirota
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yohei Ueda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yugo Kanai
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yui Yamashita
- Department of Internal Medicine, Otsu Red Cross Hospital, 1-1-35 Nagara, Otsu, Shiga, 520-8511, Japan
| | - Eri Kondo
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Toshihito Fujii
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Daisuke Taura
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Masakatsu Sone
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Akihiro Yasoda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Nobuya Inagaki
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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16
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Kanai Y, Yasoda A, Mori KP, Watanabe-Takano H, Nagai-Okatani C, Yamashita Y, Hirota K, Ueda Y, Yamauchi I, Kondo E, Yamanaka S, Sakane Y, Nakao K, Fujii T, Yokoi H, Minamino N, Mukoyama M, Mochizuki N, Inagaki N. Circulating osteocrin stimulates bone growth by limiting C-type natriuretic peptide clearance. J Clin Invest 2017; 127:4136-4147. [PMID: 28990933 DOI: 10.1172/jci94912] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/29/2017] [Indexed: 12/30/2022] Open
Abstract
Although peptides are safe and useful as therapeutics, they are often easily degraded or metabolized. Dampening the clearance system for peptide ligands is a promising strategy for increasing the efficacy of peptide therapies. Natriuretic peptide receptor B (NPR-B) and its naturally occurring ligand, C-type natriuretic peptide (CNP), are potent stimulators of endochondral bone growth, and activating the CNP/NPR-B system is expected to be a powerful strategy for treating impaired skeletal growth. CNP is cleared by natriuretic peptide clearance receptor (NPR-C); therefore, we investigated the effect of reducing the rate of CNP clearance on skeletal growth by limiting the interaction between CNP and NPR-C. Specifically, we generated transgenic mice with increased circulating levels of osteocrin (OSTN) protein, a natural NPR-C ligand without natriuretic activity, and observed a dose-dependent skeletal overgrowth phenotype in these animals. Skeletal overgrowth in OSTN-transgenic mice was diminished in either CNP- or NPR-C-depleted backgrounds, confirming that CNP and NPR-C are indispensable for the bone growth-stimulating effect of OSTN. Interestingly, double-transgenic mice of CNP and OSTN had even higher levels of circulating CNP and additional increases in bone length, as compared with mice with elevated CNP alone. Together, these results support OSTN administration as an adjuvant agent for CNP therapy and provide a potential therapeutic approach for diseases with impaired skeletal growth.
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Affiliation(s)
- Yugo Kanai
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Akihiro Yasoda
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Keita P Mori
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Chiaki Nagai-Okatani
- Department of Molecular Pharmacology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Yui Yamashita
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Keisho Hirota
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Yohei Ueda
- Department of Diabetes, Endocrinology and Nutrition, and
| | | | - Eri Kondo
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Shigeki Yamanaka
- Department of Oral and Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoriko Sakane
- Department of Diabetes, Endocrinology and Nutrition, and
| | - Kazumasa Nakao
- Department of Oral and Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Hideki Yokoi
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Naoto Minamino
- Department of Molecular Pharmacology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Masashi Mukoyama
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan.,Department of Nephrology, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Naoki Mochizuki
- Department of Cell Biology and.,Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Nobuya Inagaki
- Department of Diabetes, Endocrinology and Nutrition, and
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17
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Yamauchi I, Sakane Y, Fukuda Y, Fujii T, Taura D, Hirata M, Hirota K, Ueda Y, Kanai Y, Yamashita Y, Kondo E, Sone M, Yasoda A, Inagaki N. Clinical Features of Nivolumab-Induced Thyroiditis: A Case Series Study. Thyroid 2017; 27:894-901. [PMID: 28537531 DOI: 10.1089/thy.2016.0562] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND The programmed cell death-1 (PD-1) pathway is a novel therapeutic target in immune checkpoint therapy for cancer. It consists of the PD-1 receptor and its two ligands, programmed death-ligand 1 (PD-L1) and programmed death-ligand 2 (PD-L2). Nivolumab is an anti-PD-1 monoclonal antibody approved for malignant melanoma, advanced non-small cell lung cancer, and advanced renal cell carcinoma in Japan. Thyrotoxicosis and hypothyroidism have both been reported in international Phase 3 studies and national post-marketing surveillance of nivolumab in Japan. METHODS This study analyzed five consecutive cases with thyroid dysfunction associated with nivolumab therapy. Second, it examined the mRNA and protein expressions of PD-L1 and PD-L2 by reverse transcription polymerase chain reaction and Western blotting. RESULTS All patients were diagnosed with painless thyroiditis. Thyrotoxicosis developed within four weeks from the first administration of nivolumab and normalized within four weeks of onset in three of the five patients. Hypothyroidism after transient thyrotoxicosis developed in two patients, and preexisting hypothyroidism persisted in one patient. The other two patients were treated with glucocorticoids and discontinued nivolumab therapy for comorbid adverse events. One did not develop hypothyroidism, and the other developed mild, transient hypothyroidism. In addition, it was verified that normal thyroid tissue expresses PD-L1 and PD-L2 mRNA and those proteins. CONCLUSIONS In the present cases, nivolumab-induced thyrotoxicosis seemed to be associated with painless thyroiditis, while no patient with Graves' disease was observed. A transient and rapid course with subsequent hypothyroidism was observed in nivolumab-induced thyroiditis. In addition, it was verified that PD-L1 and PD-L2 are expressed in normal thyroid tissue. This suggests that nivolumab therapy reduces immune tolerance, even in normal thyroid tissue, and leads to the development of thyroiditis. Treating thyrotoxicosis with only supportive care and considering levothyroxine replacement therapy once subsequent hypothyroidism occurs is proposed. Further investigations are required to confirm whether glucocorticoid therapy and discontinuation of nivolumab therapy prevent subsequent hypothyroidism.
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Affiliation(s)
- Ichiro Yamauchi
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Yoriko Sakane
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
- 2 Preemptive Medicine and Lifestyle Disease Research Center, Kyoto University Hospital , Kyoto, Japan
| | - Yorihide Fukuda
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Toshihito Fujii
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Daisuke Taura
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Masakazu Hirata
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Keisho Hirota
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Yohei Ueda
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Yugo Kanai
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Yui Yamashita
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Eri Kondo
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Masakatsu Sone
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Akihiro Yasoda
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
| | - Nobuya Inagaki
- 1 Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine , Kyoto, Japan
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18
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Yamanaka S, Nakao K, Koyama N, Isobe Y, Ueda Y, Kanai Y, Kondo E, Fujii T, Miura M, Yasoda A, Nakao K, Bessho K. Circulatory CNP Rescues Craniofacial Hypoplasia in Achondroplasia. J Dent Res 2017. [PMID: 28644737 DOI: 10.1177/0022034517716437] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Achondroplasia is the most common genetic form of human dwarfism, characterized by midfacial hypoplasia resulting in occlusal abnormality and foramen magnum stenosis, leading to serious neurologic complications and hydrocephalus. Currently, surgery is the only way to manage jaw deformity, neurologic complications, and hydrocephalus in patients with achondroplasia. We previously showed that C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth of long bones and vertebrae and is also a potent stimulator in the craniofacial region, which is crucial for midfacial skeletogenesis. In this study, we analyzed craniofacial morphology in a mouse model of achondroplasia, in which fibroblast growth factor receptor 3 (FGFR3) is specifically activated in cartilage ( Fgfr3ach mice), and investigated the mechanisms of jaw deformities caused by this mutation. Furthermore, we analyzed the effect of CNP on the maxillofacial area in these animals. Fgfr3ach mice exhibited midfacial hypoplasia, especially in the sagittal direction, caused by impaired endochondral ossification in craniofacial cartilage and by premature closure of the spheno-occipital synchondrosis, an important growth center in craniomaxillofacial skeletogenesis. We crossed Fgfr3ach mice with transgenic mice in which CNP is expressed in the liver under the control of the human serum amyloid-P component promoter, resulting in elevated levels of circulatory CNP ( Fgfr3ach/SAP-Nppc-Tg mice). In the progeny, midfacial hypoplasia in the sagittal direction observed in Fgfr3ach mice was improved significantly by restoring the thickness of synchondrosis and promoting proliferation of chondrocytes in the craniofacial cartilage. In addition, the foramen magnum stenosis observed in Fgfr3ach mice was significantly ameliorated in Fgfr3ach/SAP-Nppc-Tg mice due to enhanced endochondral bone growth of the anterior intraoccipital synchondrosis. These results clearly demonstrate the therapeutic potential of CNP for treatment of midfacial hypoplasia and foramen magnum stenosis in achondroplasia.
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Affiliation(s)
- S Yamanaka
- 1 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazumasa Nakao
- 1 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - N Koyama
- 1 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Isobe
- 1 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Ueda
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Kanai
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - E Kondo
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Fujii
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Miura
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Yasoda
- 2 Department of Diabetes, Endocrinology and Nutrition, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kazuwa Nakao
- 3 TK Project, Medical Innovation Center, Kyoto University, Kyoto, Japan
| | - K Bessho
- 1 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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19
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Suzuki Y, Kondo E, Makino A. Effects of co-overexpression of the genes of Rubisco and transketolase on photosynthesis in rice. Photosynth Res 2017; 131:281-289. [PMID: 27817054 DOI: 10.1007/s11120-016-0320-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/18/2016] [Indexed: 05/03/2023]
Abstract
Metabolome analyses have indicated an accumulation of sedoheptulose 7-phosphate in transgenic rice plants with overproduction of Rubisco (Suzuki et al. in Plant Cell Environ 35:1369-1379, 2012. doi: 10.1111/j.1365-3040.2012.02494.x ). Since Rubisco overproduction did not quantitatively enhance photosynthesis even under CO2-limited conditions, it is suspected that such an accumulation of sedoheptulose 7-phosphate hampers the improvement of photosynthetic capacity. In the present study, the gene of transketolase, which is involved in the metabolism of sedoheptulose 7-phosphate, was co-overexpressed with the Rubisco small subunit gene in rice. Rubisco and transketolase were successfully overproduced in comparison with those in wild-type plants by 35-53 and 39-84 %, respectively. These changes in the amounts of the proteins were associated with those of the mRNA levels. However, the rate of CO2 assimilation under high irradiance and different [CO2] did not differ between co-overexpressed plants and wild-type plants. Thus, co-overproduction of Rubisco and transketolase did not improve photosynthesis in rice. Transketolase was probably not a limiting factor of photosynthesis as overproduction of transketolase alone by 80-94 % did not affect photosynthesis.
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Affiliation(s)
- Yuji Suzuki
- Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Sendai, 981-8555, Japan.
- CREST, JST, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan.
- Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka, Iwate, 020-8550, Japan.
| | - Eri Kondo
- Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Sendai, 981-8555, Japan
| | - Amane Makino
- Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Sendai, 981-8555, Japan
- CREST, JST, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan
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20
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Ueda Y, Yasoda A, Yamashita Y, Kanai Y, Hirota K, Yamauchi I, Kondo E, Sakane Y, Yamanaka S, Nakao K, Fujii T, Inagaki N. C-type natriuretic peptide restores impaired skeletal growth in a murine model of glucocorticoid-induced growth retardation. Bone 2016; 92:157-167. [PMID: 27594049 DOI: 10.1016/j.bone.2016.08.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/17/2016] [Accepted: 08/31/2016] [Indexed: 01/27/2023]
Abstract
Glucocorticoids are widely used for treating autoimmune conditions or inflammatory disorders. Long-term use of glucocorticoids causes impaired skeletal growth, a serious side effect when they are used in children. We have previously demonstrated that C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth. In this study, we investigated the effect of CNP on impaired bone growth caused by glucocorticoids by using a transgenic mouse model with an increased circulating CNP level. Daily administration of a high dose of dexamethasone (DEX) to 4-week-old male wild-type mice for 4weeks significantly shortened their naso-anal length, which was restored completely in DEX-treated CNP transgenic mice. Impaired growth of the long bones and vertebrae by DEX was restored to a large extent in the CNP transgenic background, with recovery in the narrowed growth plate by increased cell volume, whereas the decreased proliferation and increased apoptosis of the growth plate chondrocytes were unaffected. Trabecular bone volume was not changed by DEX treatment, but decreased significantly in a CNP transgenic background. In young male rats, the administration of high doses of DEX greatly decreased N-terminal proCNP concentrations, a marker of CNP production. In organ culture experiments using fetal wild-type murine tibias, longitudinal growth of tibial explants was inhibited by DEX but reversed by CNP. These findings now warrant further study of the therapeutic potency of CNP in glucocorticoid-induced bone growth impairment.
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Affiliation(s)
- Yohei Ueda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Akihiro Yasoda
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Yui Yamashita
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Yugo Kanai
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Keisho Hirota
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Ichiro Yamauchi
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Eri Kondo
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Yoriko Sakane
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Shigeki Yamanaka
- Department of Maxillofacial Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Kazumasa Nakao
- Department of Maxillofacial Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Toshihito Fujii
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
| | - Nobuya Inagaki
- Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, 606-8507 Kyoto, Japan.
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21
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Kondo E, Yamamoto K, Masunari T, Takizawa J, Miura K, Masaki Y, Matsumura T, Hiramatsu Y, Murakam J, Tsujimura H, Tomita N, Maeda Y, Kanno M. Final results of a phase II trial of R-IDEA as salvage therapy in patients with relapsed/refractory diffuse large B-cell lymphoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw375.26] [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: 11/13/2022] Open
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22
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Kitazawa K, Kondo E, Sotozono C, Kinoshita S. [A Case of Fungal Keratitis Treated Surgically]. Nippon Ganka Gakkai Zasshi 2016; 120:640-645. [PMID: 30067003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Purpose: Here we report a patient who underwent removal of a retrocorneal plaque and anterior chamber irrigation for acute-stage fungal keratitis. Case report: A 56-year-old woman was referred to the Baptist Yamasaki Eye Clinic, Kyoto, Japan due to refractory infectious keratitis. A white plume infiltration from the superficial to deep corneal stroma was present at the central cornea, and a white giant plaque was present on the posterior surface of the cornea. For diagnostic purposes and to reduce inflammation, the retrocorneal plaque was surgically removed and the anterior chamber was irrigated. Findings obtained from the surgically removed plaque revealed many neutrophils coiled with fibrin and filamentous fungus positive to Fungiflora Y staining. At 1-day postoperative, the amount of inflammation and infiltration were drastically decreased and the infection focus became gradually becoming smaller, finally disappearing at 6-weeks postoperative and with no signs of recurrence. Conclusion: The findings of this study show that surgical intervention can be an effective treatment option for cases of fungal keratitis with retrocorneal plaque.
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23
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Yamamoto A, Usami T, Kondo E, Kato K, Umayahara K. A case report of benign metastasizing leiomyoma of the lung: FDG-PET-CT findings and the utility of uterine needle biopsy. EUR J GYNAECOL ONCOL 2016; 37:568-571. [PMID: 29894087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Benign metastasizing leiomyoma (BML) is a rare condition that affects other organs out of the uterus. Recently, a few case reports in which 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) has been used to distinguish the malignancy have been published. Here, the authors present a case of BML with metabolic activity on PET, in which needle biopsy of the uterus was efficient to make diagnosis.
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24
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Abe N, Hashimoto Y, Kawaguchi S, Shimoyama H, Kojima Y, Yoshimoto E, Kondo E, Ohki A, Takeuchi H, Nagao G, Suzuki Y, Masaki T, Mori T, Sugiyama M. Successful treatment of large adenoma extending close to the papilla in the duodenum by laparoscopy-assisted pancreas-sparing duodenectomy. Asian J Endosc Surg 2016; 9:52-6. [PMID: 26781527 DOI: 10.1111/ases.12246] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/20/2015] [Accepted: 09/03/2015] [Indexed: 12/16/2022]
Abstract
A 54-year-old man had a 65-mm infrapapillary, circular, and laterally spreading tubular adenoma in the distal second and proximal third parts of the duodenum. The papilla was 15 mm from the proximal margin of the tumor. Because the patient requested organ-preserving laparoscopic surgery, we conducted laparoscopy-assisted pancreas-sparing duodenectomy (LAPSD). LAPSD consists of five major procedures: (i) laparoscopic wide Kocher maneuver and transection of the proximal jejunum; (ii) laparoscopic separation of the duodenum from the pancreas; (iii) creation of a small upper median laparotomy; (iv) extracorporeal completion of the segmental duodenectomy; and (v) extracorporeal intestinal reconstruction. The postoperative course was uneventful, and the patient was discharged on postoperative day 8. Histopathological examination revealed that the circumferential margin of the specimen was negative for tumor cells. LAPSD provided a clear margin without damaging the papilla and eliminated the possibility of peritoneal or port-site seeding of tumor cells because part of the procedure was performed extracorporeally. LAPSD is a useful alternative to pancreatoduodenectomy in patients with a large adenoma extending close to the papilla in the duodenum.
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Affiliation(s)
- Nobutsugu Abe
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | | | - Shouhei Kawaguchi
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Hayato Shimoyama
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Youhei Kojima
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Eri Yoshimoto
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Eri Kondo
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Atsuko Ohki
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Hirohisa Takeuchi
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Gen Nagao
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Yutaka Suzuki
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Tadahiko Masaki
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Toshiyuki Mori
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
| | - Masanori Sugiyama
- Department of Surgery, Kyorin University School of Medicine, Tokyo, Japan
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25
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Yamori W, Kondo E, Sugiura D, Terashima I, Suzuki Y, Makino A. Enhanced leaf photosynthesis as a target to increase grain yield: insights from transgenic rice lines with variable Rieske FeS protein content in the cytochrome b6 /f complex. Plant Cell Environ 2016; 39:80-7. [PMID: 26138548 DOI: 10.1111/pce.12594] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 06/15/2015] [Accepted: 06/21/2015] [Indexed: 05/18/2023]
Abstract
Although photosynthesis is the most important source for biomass and grain yield, a lack of correlation between photosynthesis and plant yield among different genotypes of various crop species has been frequently observed. Such observations contribute to the ongoing debate whether enhancing leaf photosynthesis can improve yield potential. Here, transgenic rice plants that contain variable amounts of the Rieske FeS protein in the cytochrome (cyt) b6 /f complex between 10 and 100% of wild-type levels have been used to investigate the effect of reductions of these proteins on photosynthesis, plant growth and yield. Reductions of the cyt b6 /f complex did not affect the electron transport rates through photosystem I but decreased electron transport rates through photosystem II, leading to concomitant decreases in CO2 assimilation rates. There was a strong control of plant growth and grain yield by the rate of leaf photosynthesis, leading to the conclusion that enhancing photosynthesis at the single-leaf level would be a useful target for improving crop productivity and yield both via conventional breeding and biotechnology. The data here also suggest that changing photosynthetic electron transport rates via manipulation of the cyt b6 /f complex could be a potential target for enhancing photosynthetic capacity in higher plants.
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Affiliation(s)
- Wataru Yamori
- Center for Environment, Health and Field Sciences, Chiba University, 6-2-1 Kashiwa-no-ha, Kashiwa, Chiba, 277-0882, Japan
- PRESTO and CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Eri Kondo
- Department of Applied Plant Science, Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, Miyagi, 981-8555, Japan
| | - Daisuke Sugiura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Ichiro Terashima
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- PRESTO and CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Yuji Suzuki
- Department of Applied Plant Science, Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, Miyagi, 981-8555, Japan
| | - Amane Makino
- Department of Applied Plant Science, Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai, Miyagi, 981-8555, Japan
- PRESTO and CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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26
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Nomura H, Takahashi A, Usami T, Matoda M, Kanao H, Kondo E, Omatsu K, Kato K, Takazawa Y, Takeshima N. 283P Clinicopathological features of primary malignant melanoma of the vagina. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv525.17] [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: 11/13/2022] Open
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27
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Kubota H, Endo H, Noma M, Ishii H, Tsuchiya H, Yoshimoto A, Takahashi Y, Inaba Y, Nishino Y, Nunokawa M, Hosoi Y, Ikezoe T, Nemoto M, Makino Y, Nemoto Y, Matsukura M, Sugiyama M, Abe N, Takeuchi H, Nagao G, Kondo E, Yanagida O, Yoshino H, Sudo K. Xenopericardial roll graft replacement for infectious pseudoaneurysms and graft infections of the aorta. J Cardiothorac Surg 2015; 10:133. [PMID: 26506850 PMCID: PMC4624649 DOI: 10.1186/s13019-015-0343-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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: 02/23/2015] [Accepted: 10/26/2015] [Indexed: 11/29/2022] Open
Abstract
Background Which graft material is the optimal graft material for the treatment of infected aortic aneurysms and aortic graft infections is still a matter of controversy. Orthotopic aortic reconstruction with intraoperatively prepared xenopericardial roll grafts without omentopexy was performed as the “initial” operation to treat aortic infection or as a “rescue” operation to treat graft infection. Mid-term outcomes were evaluated. Methods Between 2009 and 2013, orthotopic xenopericardial roll graft replacement was performed to treat eight patients (male/female: 6/2; mean age: 69.5 [55–80] yr). Graft material: equine/bovine pericardium: 2/6; type of operation: initial 4/rescue 4; omentopexy 0. Additional operation: esophagectomy 2. Mean follow-up period: 2.6 ± 1.6 (1.1–5.1) years. Results Replacement: ascending 3, arch 1 (reconstruction of neck vessels with small xenopericardial roll grafts), descending 3, and thoracoabdominal 1. Pathogens: MRSA 2, MSSA 1, Candida 1, E. coli 1, oral bacillus 1, and culture negative 2. Postoperative local recurrence of infection: 0. Graft-related complications: stenosis 0, calcification 0, non-infectious pseudoaneurysm of anastomosis 2 (surgical repair: 1/TEVAR 1). In-hospital mortality: 2 (MOF: initial 1/rescue 1); Survival rate exclusive of in-hospital deaths (~3 y): 100 %, but one patient died of lung cancer (3.6 yr). Conclusions Because xenopericardial roll grafts are not composed of synthetic material, the replacement procedure is simpler and less invasive than the standard procedure. Based on the favorable results obtained, this procedure may have the possibility to serve as an option for the treatment of aortic infections and aortic graft infections not only as a “rescue” treatment but as an “initial” treatment as well. Electronic supplementary material The online version of this article (doi:10.1186/s13019-015-0343-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hiroshi Kubota
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan.
| | - Hidehito Endo
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Mio Noma
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Hikaru Ishii
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Hiroshi Tsuchiya
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Akihiro Yoshimoto
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Yu Takahashi
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Yusuke Inaba
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Yoshifumi Nishino
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Masao Nunokawa
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Yutaka Hosoi
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Tooru Ikezoe
- Department of Cardiovascular Surgery, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - Masaru Nemoto
- Department of Vascular Surgery, Tokyo University, Tokyo, Japan
| | | | - Yoko Nemoto
- Department of Vascular Surgery, Tokyo University, Tokyo, Japan
| | | | - Masanori Sugiyama
- Department of Gastroenterological Surgery, Kyorin University, Tokyo, Japan
| | - Nobutsugu Abe
- Department of Gastroenterological Surgery, Kyorin University, Tokyo, Japan
| | - Hirohisa Takeuchi
- Department of Gastroenterological Surgery, Kyorin University, Tokyo, Japan
| | - Gen Nagao
- Department of Gastroenterological Surgery, Kyorin University, Tokyo, Japan
| | - Eri Kondo
- Department of Gastroenterological Surgery, Kyorin University, Tokyo, Japan
| | - Osamu Yanagida
- Kosei General Hospital affiliated to Rissho Kosei-Kai, Tokyo, Japan
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28
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Kondo E, Yasoda A, Fujii T, Nakao K, Yamashita Y, Ueda-Sakane Y, Kanamoto N, Miura M, Arai H, Mukoyama M, Inagaki N, Nakao K. Increased Bone Turnover and Possible Accelerated Fracture Healing in a Murine Model With an Increased Circulating C-Type Natriuretic Peptide. Endocrinology 2015; 156:2518-29. [PMID: 25860030 DOI: 10.1210/en.2014-1801] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Recent studies have revealed that C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth. Nevertheless, the effect of CNP on bone turnover has not yet been well studied. To elucidate this issue, we investigated the bone phenotype of a mouse model with elevated plasma CNP concentrations (SAP-CNP-Tg mice) in the present study. Microcomputed tomography (CT) analysis revealed less bone in femurs, but not in lumber vertebrae, of young adult SAP-CNP-Tg mice than that of wild-type mice. Bone histomorphometry of the tibiae from 8-week-old SAP-CNP-Tg mice showed enhanced osteoblastic and osteoclastic activities, in accordance with elevated serum levels of osteocalcin and tartrate-resistant acid phosphatase-5b, respectively. Next we performed an open and stabilized femoral fracture using 8-week-old SAP-CNP-Tg mice and compared the healing process with age-matched wild-type mice. An immunohistochemical study revealed that CNP and its receptors, natriuretic peptide receptor-B and natriuretic peptide clearance receptor, are expressed in hard calluses of wild-type mice, suggesting a possible role of CNP/natriuretic peptide receptor-B signaling in fracture repair, especially in bone remodeling stage. On micro-CT analysis, a rapid decrease in callus volume was observed in SAP-CNP-Tg mice, followed by a generation of significantly higher new bone volume with a tendency of increased bone strength. In addition, a micro-CT analysis also showed that bone remodeling was accelerated in SAP-CNP-Tg mice, which was also evident from increased serum osteocalcin and tartrate-resistant acid phosphatase-5b levels in SAP-CNP-Tg mice at the remodeling stage of fracture repair. These results indicate that CNP activates bone turnover and remodeling in vivo and possibly accelerates fracture healing in our mouse model.
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Affiliation(s)
- Eri Kondo
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Akihiro Yasoda
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Toshihito Fujii
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Kazumasa Nakao
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Yui Yamashita
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Yoriko Ueda-Sakane
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Naotetsu Kanamoto
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Masako Miura
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Hiroshi Arai
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Masashi Mukoyama
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Nobuya Inagaki
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
| | - Kazuwa Nakao
- Departments of Diabetes, Endocrinology, and Nutrition (E.K., A.Y., T.F., Y.Y., Y.U.-S., N.K., M.M., N.I.) and Maxillofacial Surgery (Kazum. N.) and Medical Innovation Center (Kazuw. N.), Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan; Health Care Service Center (H.A.), Kyoto Institute of Technology, Matsugasaki-Hashikami-cho, 606-8585 Kyoto, Japan; and Department of Nephrology (M.K.), Graduate School of Medical Science, Kumamoto University, 860-8556 Kumamoto City, Japan
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Izumi M, Hidema J, Wada S, Kondo E, Kurusu T, Kuchitsu K, Makino A, Ishida H. Establishment of monitoring methods for autophagy in rice reveals autophagic recycling of chloroplasts and root plastids during energy limitation. Plant Physiol 2015; 167:1307-20. [PMID: 25717038 PMCID: PMC4378162 DOI: 10.1104/pp.114.254078] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 02/25/2015] [Indexed: 05/19/2023]
Abstract
Autophagy is an intracellular process leading to vacuolar or lysosomal degradation of cytoplasmic components in eukaryotes. Establishment of proper methods to monitor autophagy was a key step in uncovering its role in organisms, such as yeast (Saccharomyces cerevisiae), mammals, and Arabidopsis (Arabidopsis thaliana), in which chloroplastic proteins were found to be recycled by autophagy. Chloroplast recycling has been predicted to function in nutrient remobilization for growing organs or grain filling in cereal crops. Here, to develop our understanding of autophagy in cereals, we established monitoring methods for chloroplast autophagy in rice (Oryza sativa). We generated transgenic rice-expressing fluorescent protein (FP) OsAuTophaGy8 (OsATG8) fusions as autophagy markers. FP-ATG8 signals were delivered into the vacuolar lumen in living cells of roots and leaves mainly as vesicles corresponding to autophagic bodies. This phenomenon was not observed upon the addition of wortmannin, an inhibitor of autophagy, or in an ATG7 knockout mutant. Markers for the chloroplast stroma, stromal FP, and FP-labeled Rubisco were delivered by a type of autophagic body called the Rubisco-containing body (RCB) in the same manner. RCB production in excised leaves was suppressed by supply of external sucrose or light. The release of free FP caused by autophagy-dependent breakdown of FP-labeled Rubisco was induced during accelerated senescence in individually darkened leaves. In roots, nongreen plastids underwent both RCB-mediated and entire organelle types of autophagy. Therefore, our newly developed methods to monitor autophagy directly showed autophagic degradation of leaf chloroplasts and root plastids in rice plants and its induction during energy limitation.
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Affiliation(s)
- Masanori Izumi
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Jun Hidema
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Shinya Wada
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Eri Kondo
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Takamitsu Kurusu
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Kazuyuki Kuchitsu
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Amane Makino
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
| | - Hiroyuki Ishida
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan (M.I);Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan (M.I., J.H.);Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University, Sendai 981-8555, Japan (S.W., E.K., A.M., H.I.);Department of Applied Biological Science (T.K., K.K.) andResearch Institute for Science and Technology (T.K., K.K.), Tokyo University of Science, Chiba 278-8510 Japan;School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo 192-0982, Japan (T.K.); andCore Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan (A.M.)
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Kondo E, Yamamoto K, Masunari T, Miura K, Takizawa J, Masaki Y, Matsumura T, Hiramatsu Y, Murakami J, Tsujimura H, Tomita N, Maeda Y, Kanno M. Interim Analysis of an Ongoing Phase Ii Trial Assessing Safety and Efficacy of R-Idea As Salvage Therapy in Patients with Relapsed/Refractory Dlbcl: an Intergroup Study of the Society of Lymphoma Treatment in Japan (Solt-J) and the West Japan Hematology/Oncology Group (Westjhog). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu339.12] [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: 11/14/2022] Open
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Sato Y, Yamauchi A, Urano M, Kondo E, Saito K. Corticosteroid therapy for duchenne muscular dystrophy: improvement of psychomotor function. Pediatr Neurol 2014; 50:31-7. [PMID: 24138948 DOI: 10.1016/j.pediatrneurol.2013.07.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 07/29/2013] [Accepted: 07/31/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND Of the numerous clinical trials for Duchenne muscular dystrophy, only the corticosteroid prednisolone has shown potential for temporal improvement in motor ability. In this study, the effects of prednisolone on intellectual ability are examined in 29 cases of Duchenne muscular dystrophy because little information has been reported. And also, motor functions and cardiac functions were evaluated. METHODS The treated group was administered prednisolone (0.75 mg/kg) orally on alternate days and the compared with the untreated control group. Gene mutations were investigated. The patients were examined for intelligence quotient adequate for age, brain natriuretic peptide, creatine kinase, and manual muscle testing before treatment and after the period 6 months to 2 years. RESULTS Intelligence quotient scores of the treated increased to 6.5 ± 11.9 (mean ± standard deviation) were compared with the controls 2.1 ± 4.9 (P = 0.009). Intelligence quotient scores of the patients with nonsense point mutations improved significantly (21.0 ± 7.9) more than those with deletion or duplication (1.9 ± 9.0; P = 0.015). Motor function, such as time to stand up, of those treated improved significantly and brain natriuretic peptide level was reduced to a normal level after treatment in 15 patients (73%). CONCLUSIONS Our results demonstrate the effectiveness of prednisolone in improving intellectual impairment as well as in preserving motor function and brain natriuretic peptide levels. We presume that prednisolone has a read-through effect on the stop codons in the central nervous systems of Duchenne muscular dystrophy because intelligence quotient of point mutation case was improved significantly.
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Affiliation(s)
- Yuko Sato
- Affiliated Field of Genetic Medicine, Division of Biomedical Engineering and Science, Graduate Course of Medicine, Graduate School of Tokyo Women's Medical University, Tokyo, Japan; Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Akemi Yamauchi
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Mari Urano
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Eri Kondo
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Kayoko Saito
- Affiliated Field of Genetic Medicine, Division of Biomedical Engineering and Science, Graduate Course of Medicine, Graduate School of Tokyo Women's Medical University, Tokyo, Japan; Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan.
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Ida M, Hirata M, Odori S, Mori E, Kondo E, Fujikura J, Kusakabe T, Ebihara K, Hosoda K, Nakao K. Early changes of abdominal adiposity detected with weekly dual bioelectrical impedance analysis during calorie restriction. Obesity (Silver Spring) 2013; 21:E350-3. [PMID: 23703886 DOI: 10.1002/oby.20300] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 11/20/2012] [Accepted: 11/25/2012] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To elucidate early change of intra-abdominal fat in response to calorie restriction in patients with obesity by weekly evaluation using a dual bioelectrical impedance analysis (Dual BIA) instrument. METHODS For 67 Japanese patients with obesity, diabetes, or metabolic syndrome, intra-abdominal fat area (IAFA), initially with both Dual BIA and computed tomography (CT), and in subsequent weeks of calorie restriction, with Dual BIA were measured. RESULTS IAFA by Dual BIA (Dual BIA-IAFA) correlated well with IAFA by CT (CT-IAFA) in obese patients (r = 0.821, P < .0001, n = 67). Ten males and 9 females (age 49.0 ± 14.4 years, BMI 33.2 ± 7.3 kg/m2) lost more than 5% of baseline body weight (BW) in 3 weeks, and their Dual BIA-IAFA, BW, and WC decreased by 18.9%, 5.3%, and 3.8%, respectively (P < .05, ANCOVA). CONCLUSION Dual BIA instrument could detect the weekly change of Dual BIA-IAFA under calorie restriction in obese patients and demonstrated a substantially larger change of IAFA compared with changes of BW and WC in early weeks. This observation corroborates the significance of evaluating IAFA as a biomarker for obesity, and indicates the clinical usefulness of the Dual BIA instrument.
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Affiliation(s)
- Midori Ida
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
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Nakao K, Yasoda A, Osawa K, Fujii T, Kondo E, Koyama N, Kanamoto N, Miura M, Kuwahara K, Akiyama H, Bessho K, Nakao K. Impact of local CNP/GC-B system in growth plates on endochondral bone growth. BMC Pharmacol Toxicol 2013. [PMCID: PMC3765567 DOI: 10.1186/2050-6511-14-s1-p48] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kawai Y, Kato A, Nishizawa Y, Kondo E, Saito A, Wakabayashi T, Akaike H, Tanaka T, Nakano T, Ouchi K, Miyashita N. P343 Prevalence of macrolide-resistant Mycoplasma pneumoniae infection in pediatric patients: a multicenter epidemiological study. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70584-3] [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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Saito K, Sakaguchi M, Iioka H, Matsui M, Nakanishi H, Huh NH, Kondo E. Coxsackie and adenovirus receptor is a critical regulator for the survival and growth of oral squamous carcinoma cells. Oncogene 2013; 33:1274-86. [PMID: 23503462 DOI: 10.1038/onc.2013.66] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/27/2012] [Accepted: 01/07/2013] [Indexed: 12/16/2022]
Abstract
Coxsackie and adenovirus receptor (CAR) is essential for adenovirus infection to target cells, and its constitutive expression in various cancerous and normal tissues has been reported. Recently, the biological role of CAR in human cancers of several different origins has been investigated with respect to tumor progression, metastasis and tumorigenesis. However, its biological function in tumor cells remains controversial. Here we report the critical role of CAR in growth regulation of oral squamous cell carcinomas (SCCs) in vitro and in vivo via the specific interaction with Rho-associated protein kinase (ROCK). Loss of endogenous CAR expression by knockdown using specific small interfering RNA (siRNA) against CAR facilitates growth suppression of SCC cells due to cell dissociation, followed by apoptosis. The consequent morphological reaction was reminiscent of anoikis, rather than epithelial-mesenchymal transition, and the dissociation of oral SCC cells was triggered not by lack of contact with extracellular matrix, but by loss of cell-to-cell contact caused by abnormal translocation of E-cadherin from surface membrane to cytoplasm. Immunoprecipitation assays of the CAR-transfected oral SCC cell line, HSC-2, with or without ROCK inhibitor (Y-27632) revealed that CAR directly associates with ROCKI and ROCKII, which results in inhibition of ROCK activity and contributes to maintenance of cell-to-cell adhesion for their growth and survival. Based on these findings, in vivo behavior of CAR-downregulated HSC-2 cells from siRNA knockdown was compared with that of normally CAR-expressing cells in intraperitoneally xenografted mouse models. The mice engrafted with CAR siRNA-pretreated HSC-2 cells showed poor formation of metastatic foci in contrast to those implanted with the control siRNA-pretreated cells. Thus, CAR substantially has an impact on growth and survival of oral SCC cells as a negative regulator of ROCK in vitro and in vivo.
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Affiliation(s)
- K Saito
- Division of Oncological Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - M Sakaguchi
- Department of Cell Biology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - H Iioka
- 1] Division of Oncological Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan [2] Division of Translational Research, Advanced Medical Research Center, Aichi Medical University, Nagakute, Japan
| | - M Matsui
- Division of Oncological Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - H Nakanishi
- Division of Oncological Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - N H Huh
- Department of Cell Biology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - E Kondo
- 1] Division of Oncological Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan [2] Department of Epidemiology, Program in Health and Community Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Iwamoto A, Kondo E, Fujihashi H, Sugiyama M. Kinematic study of root elongation in Arabidopsis thaliana with a novel image-analysis program. J Plant Res 2013; 126:187-192. [PMID: 23076437 DOI: 10.1007/s10265-012-0523-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 09/09/2012] [Indexed: 06/01/2023]
Abstract
The measurement of the spatial profile of root elongation needs to determine matching points between time-lapse images and calculate their displacement. These data have been obtained by laborious manual methods in the past. Some computer-based programs have been developed to improve the measurement, but they require many time-series digital images or sprinkling graphite particles on the root prior to image capture. Here, we have developed GrowthTracer, a new image-analysis program for the kinematic study of root elongation. GrowthTracer employs a multiresolution image matching method with a nonlinear filter called the critical point filter (CPF), which extracts critical points from images at each resolution and can determine precise matching points by analysis of only two intact images, without pre-marking by graphite particles. This program calculates the displacement of each matching point and determines the displacement velocity profile along the medial axis of the root. In addition, a manual input of distinct matching points increases the matching accuracy. We show a successful application of this novel program for the kinematic analysis of root growth in Arabidopsis thaliana.
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Affiliation(s)
- Akitoshi Iwamoto
- Department of Biology, Tokyo Gakugei University, 4-1-1 Nukui Kita-machi, Koganei-shi, Tokyo 184-8501, Japan.
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Kuroda A, Yasuda T, Takahara M, Sakamoto F, Kasami R, Miyashita K, Yoshida S, Kondo E, Aihara KI, Endo I, Matsuoka TA, Kaneto H, Matsumoto T, Shimomura I, Matsuhisa M. Carbohydrate-to-insulin ratio is estimated from 300-400 divided by total daily insulin dose in type 1 diabetes patients who use the insulin pump. Diabetes Technol Ther 2012; 14:1077-80. [PMID: 23101953 DOI: 10.1089/dia.2012.0109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND To optimize insulin dose using insulin pump, basal and bolus insulin doses are widely calculated from total daily insulin dose (TDD). It is recommended that total daily basal insulin dose (TBD) is 50% of TDD and that the carbohydrate-to-insulin ratio (CIR) equals 500 divided by TDD. We recently reported that basal insulin requirement is approximately 30% of TDD. We therefore investigated CIR after adjustment of the proper basal insulin rate. SUBJECTS AND METHODS Forty-five Japanese patients with type 1 diabetes were investigated during several weeks of hospitalization. The patients were served standard diabetes meals (25-30 kcal/kg of ideal body weight). Each meal omission was done to confirm basal insulin rate. Target blood glucose level was set at 100 and 150 mg/dL before and 2 h after each meal, respectively. After the basal insulin rate was fixed and target blood glucose levels were achieved, TBD, CIR, TDD, and their products were determined. RESULTS Mean (±SD) blood glucose levels before and 2 h after meals were 121±47 and 150±61 mg/dL, respectively. TDD was 31.5±9.0 U, and TBD was 27.0±6.5% of TDD. CIR×TDD of breakfast was significantly lower than those of lunch and supper (288±73 vs. 408±92 and 387±83, respectively; P<0.01). CONCLUSIONS CIR has diurnal variance and is estimated from the formula CIR=300/TDD at breakfast or CIR=400/TDD at lunch and supper in type 1 diabetes patients. These results indicate that the insulin dose has been underestimated by using previously established calculations.
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Affiliation(s)
- Akio Kuroda
- Diabetes Therapeutics and Research Center, The University of Tokushima, Tokushima, Japan
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Nakao K, Okubo Y, Yasoda A, Koyama N, Osawa K, Isobe Y, Kondo E, Fujii T, Miura M, Nakao K, Bessho K. The effects of C-type natriuretic peptide on craniofacial skeletogenesis. J Dent Res 2012; 92:58-64. [PMID: 23114031 DOI: 10.1177/0022034512466413] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
C-type natriuretic peptide (CNP) is a potent stimulator of long bone and vertebral development via endochondral ossification. In the present study, we investigated the effects of CNP on craniofacial skeletogenesis, which consists of both endochondral and membranous ossification. Morphometric analyses of crania from CNP knockout and transgenic mice revealed that CNP stimulates longitudinal growth along the cranial length, but does not regulate cranial width. CNP markedly increased the length of spheno-occipital synchondrosis in fetal murine organ cultures, and the thickness of cultured murine chondrocytes from the spheno-occipital synchondrosis or nasal septum, resulting in the stimulation of longitudinal cranial growth. Mandibular growth includes endochondral and membranous ossification; although CNP stimulated endochondral bone growth of condylar cartilage in cultured fetal murine mandibles, differences in the lengths of the lower jaw between CNP knockout or transgenic mice and wild-type mice were smaller than those observed for the lengths of the upper jaw. These results indicate that CNP primarily stimulates endochondral ossification in the craniofacial region and is crucial for midfacial skeletogenesis.
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Affiliation(s)
- K Nakao
- Department of Oral and Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Koyama N, Miura M, Nakao K, Kondo E, Fujii T, Taura D, Kanamoto N, Sone M, Yasoda A, Arai H, Bessho K, Nakao K. Human induced pluripotent stem cells differentiated into chondrogenic lineage via generation of mesenchymal progenitor cells. Stem Cells Dev 2012; 22:102-13. [PMID: 22817676 DOI: 10.1089/scd.2012.0127] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Human induced pluripotent stem cells (hiPSCs) exhibit pluripotency, proliferation capability, and gene expression similar to those of human embryonic stem cells (hESCs). hESCs readily form cartilaginous tissues in teratomas in vivo; despite extensive effort, however, to date no efficient method for inducing mature chondrocytes in vitro has been established. hiPSCs can also differentiate into cartilage in vivo by teratoma formation, but as with hESCs, no reliable system for in vitro chondrogenic differentiation of hiPSCs has yet been reported. Here, we examined the chondrogenic differentiation capability of hiPSCs using a multistep culture method consisting of embryoid body (EB) formation, cell outgrowth from EBs, monolayer culture of sprouted cells from EBs, and 3-dimensional pellet culture. In this culture process, the cell density of monolayer culture was critical for cell viability and subsequent differentiation capability. Monolayer-cultured cells exhibited fibroblast-like morphology and expressed markers for mesenchymal stem cells. After 2-3 weeks of pellet culture, cells in pellets exhibited a spherical morphology typical of chondrocytes and were surrounded by extracellular matrix that contained acidic proteoglycans. The expression of type II collagen and aggrecan in pellets progressively increased. Histological analysis revealed that over 70% of hiPSC-derived pellets successfully underwent chondrogenic differentiation. Using the same culture method, hESCs showed similar histological changes and gene expression, but differentiated slightly faster and more efficiently than hiPSCs. Our study demonstrates that hiPSCs can be efficiently differentiated into the chondrogenic lineage in vitro via generation of mesenchymal progenitor cells, using a simplified, multistep culture method.
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Affiliation(s)
- Noriaki Koyama
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Kondo E, Yasoda A, Tsuji T, Fujii T, Miura M, Kanamoto N, Tamura N, Arai H, Kunieda T, Nakao K. Skeletal analysis of the long bone abnormality (lbab/lbab) mouse, a novel chondrodysplastic C-type natriuretic peptide mutant. Calcif Tissue Int 2012; 90:307-18. [PMID: 22271248 DOI: 10.1007/s00223-011-9567-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 12/22/2011] [Indexed: 12/21/2022]
Abstract
Long bone abnormality (lbab/lbab) is a strain of dwarf mice. Recent studies revealed that the phenotype is caused by a spontaneous mutation in the Nppc gene, which encodes mouse C-type natriuretic peptide (CNP). In this study, we analyzed the chondrodysplastic skeletal phenotype of lbab/lbab mice. At birth, lbab/lbab mice are only slightly shorter than their wild-type littermates. Nevertheless, lbab/lbab mice do not undergo a growth spurt, and their final body and bone lengths are only ~60% of those of wild-type mice. Histological analysis revealed that the growth plate in lbab/lbab mice, especially the hypertrophic chondrocyte layer, was significantly thinner than in wild-type mice. Overexpression of CNP in the cartilage of lbab/lbab mice restored their thinned growth plate, followed by the complete rescue of their impaired endochondral bone growth. Furthermore, the bone volume in lbab/lbab mouse was severely decreased and was recovered by CNP overexpression. On the other hand, the thickness of the growth plate of lbab/+ mice was not different from that of wild-type mice; accordingly, impaired endochondral bone growth was not observed in lbab/+ mice. In organ culture experiments, tibial explants from fetal lbab/lbab mice were significantly shorter than those from lbab/+ mice and elongated by addition of 10(-7) M CNP to the same extent as lbab/+ tibiae treated with the same dose of CNP. These results demonstrate that lbab/lbab is a novel mouse model of chondrodysplasia caused by insufficient CNP action on endochondral ossification.
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Affiliation(s)
- Eri Kondo
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Kondo E, Nishimura T, Kosho T, Inaba Y, Mitsuhashi S, Ishida T, Baba A, Koike K, Nishino I, Nonaka I, Furukawa T, Saito K. Recessive RYR1 mutations in a patient with severe congenital nemaline myopathy with ophthalomoplegia identified through massively parallel sequencing. Am J Med Genet A 2012; 158A:772-8. [DOI: 10.1002/ajmg.a.35243] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Accepted: 01/08/2012] [Indexed: 01/28/2023]
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Orita Y, Sato Y, Kondo E, Ishihara H, Hirai H, Hanakawa H, Onoda T, Igawa T, Saito R, Nishizaki K, Yoshino T. Minimally Invasive Procedure for Accurate Diagnosis of Mucosa-associated Lymphoid Tissue Lymphoma of the Head and Neck. Jpn J Clin Oncol 2012; 42:325-30. [DOI: 10.1093/jjco/hys011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Inuzuka M, Tamura N, Sone M, Taura D, Sonoyama T, Honda K, Kojima K, Fukuda Y, Ueda Y, Yamashita Y, Kondo E, Yamada G, Fujii T, Miura M, Kanamoto N, Yasoda A, Arai H, Mikami Y, Sasano H, Nakao K. A case of myelolipoma with bilateral adrenal hyperaldosteronism cured after unilateral adrenalectomy. Intern Med 2012; 51:479-85. [PMID: 22382563 DOI: 10.2169/internalmedicine.51.5777] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Myelolipomas are adrenal tumors composed of both adipose and hematopoietic tissues which are rarely associated with primary aldosteronism (PA). Here, we report a case of myelolipoma associated with PA. Aldosterone hypersecretion from bilateral adrenal glands had been confirmed by adrenal venous sampling and pathological analyses, but PA was clinically cured after surgical removal of the unilateral adrenal gland together with the myelolipoma that was not producing aldosterone. It is suggested that myelolipomas may release some factors which stimulate aldosterone production in adrenal glands, although further investigation is necessary. Obesity-related hyperaldosteronism might in part participate in generation of hypertension in the present case.
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Affiliation(s)
- Megumi Inuzuka
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Japan
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Kobayashi T, Onodera S, Kondo E, Tohyama H, Fujiki H, Yokoyama A, Yasuda K. Impaired fracture healing in macrophage migration inhibitory factor-deficient mice. Osteoporos Int 2011; 22:1955-65. [PMID: 20838768 DOI: 10.1007/s00198-010-1385-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2010] [Accepted: 08/23/2010] [Indexed: 11/25/2022]
Abstract
UNLABELLED This study investigated the role of macrophage migration inhibitory factor (MIF) in fracture repair using MIF gene-deficient mice (MIF KO). Fracture healing was delayed in MIF KO, and this was mainly due to the delay in the mineralization of osteoid within the fracture callus. INTRODUCTION We previously reported that the expression of macrophage migration inhibitory factor (MIF) was up-regulated during the fracture healing process in rats. However, its role in the pathophysiology of this process remained unclear. The aim of the present study was to clarify the role of MIF in the fracture healing process using MIF gene-deficient mice (MIF KO). METHODS Bone repair in wild-type mice (WT) and MIF KO (n = 70, respectively) was investigated using a tibia fracture model. Radiographic, biomechanical, histological, bone histomorphometric, and molecular analyses were performed. RESULTS Post-fracture biomechanical testing showed that maximum load and stiffness were significantly lower in MIF KO than in WT on day 42. However, similar levels were observed between the two groups on day 84. Bone histomorphometric analysis revealed significantly higher osteoid volume, a lower mineral apposition rate, and smaller numbers of osteoclasts in the MIF KO callus compared to the WT callus. The messenger ribonucleic acid expressions of matrix metalloproteinase (MMP)-2, membranous type 1-MMP, cathepsin K, and tissue nonspecific alkaline phosphatase were found to be significantly suppressed in the MIF KO callus. CONCLUSION The results of the present study suggest that delayed fracture healing in MIF KO was mainly attributable to a delay in osteoid mineralization.
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Affiliation(s)
- T Kobayashi
- Department of Sports Medicine and Joint Reconstruction Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Yamasuji Y, Nishimori H, Fujii M, Sugiyama H, Kobayashi K, Kadohisa S, Kondo E, Shinagawa K, Mominoki K, Kanekura T, Tanimoto M, Maeda Y. Prevention of Idiopathic Pneumonia Syndrome by Intra-bone Marrow Injection of Donor Cells. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fujii N, Hara Y, Nishinohara M, Kondo E, Maeda Y, Shinagawa K, Tanimoto M. Bronchiolitis Obliterans Syndrome After Hematopoietic Stem Cell Transplantation: Analysis of Single Center Experience. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.271] [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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Kondo E. 424 Development of novel cancer cell-selective cell-penetrating peptides for the advanced peptide-based drug delivery system. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72131-5] [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] Open
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Fujii T, Komatsu Y, Yasoda A, Kondo E, Yoshioka T, Nambu T, Kanamoto N, Miura M, Tamura N, Arai H, Mukoyama M, Nakao K. Circulating C-type natriuretic peptide (CNP) rescues chondrodysplastic CNP knockout mice from their impaired skeletal growth and early death. Endocrinology 2010; 151:4381-8. [PMID: 20610569 DOI: 10.1210/en.2010-0078] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
C-type natriuretic peptide (CNP) is a potent stimulator of endochondral bone growth through a subtype of membranous guanylyl cyclase receptor, GC-B. Although its two cognate natriuretic peptides, ANP and BNP, are cardiac hormones produced from heart, CNP is thought to act as an autocrine/paracrine regulator. To elucidate whether systemic administration of CNP would be a novel medical treatment for chondrodysplasias, for which no drug therapy has yet been developed, we investigated the effect of circulating CNP by using the CNP transgenic mice with an increased circulating CNP under the control of human serum amyloid P component promoter (SAP-Nppc-Tg mice). SAP-Nppc-Tg mice developed prominent overgrowth of bones formed through endochondral ossification. In organ culture experiments, the growth of tibial explants of SAP-Nppc-Tg mice was not changed from that of their wild-type littermates, exhibiting that the stimulatory effect on endochondral bone growth observed in SAP-Nppc-Tg mice is humoral. Then we crossed chondrodysplastic CNP-depleted mice with SAP-Nppc-Tg mice. Impaired endochondral bone growth in CNP knockout mice were considerably and significantly recovered by increased circulating CNP, followed by the improvement in not only their longitudinal growth but also their body weight. In addition, the mortality of CNP knockout mice was greatly decreased by circulating CNP. Systemic administration of CNP might have therapeutic potential against not only impaired skeletal growth but also other aspects of impaired growth including impaired body weight gain in patients suffering from chondrodysplasias and might resultantly protect them from their early death.
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Affiliation(s)
- Toshihito Fujii
- Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
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Klein-González N, Balkow S, Kondo E, Grabbe S, Liebig T, Shimabukuro-Vornhagen A, Bloch W, von Bergwelt-Baildon M. CD40-Activated B Cells Migrate Towards Secondary Lymphoid Organs And Interact Dynamically With T Cells. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.071] [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: 10/19/2022]
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Liebig T, Shimabukuro-Vornhagen A, Klein-González N, Wickenhauser C, Kondo E, von Bergwelt-Baildon M. Developing A Murine Model To Study B Cells As APC In Vivo. Biol Blood Marrow Transplant 2010. [DOI: 10.1016/j.bbmt.2009.12.233] [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: 10/19/2022]
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