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Takahashi I, Watanabe Y, Sonoda H, Tsunoda D, Amano I, Koibuchi N, Iizuka H, Shimokawa N. Calcium sensing and signaling are impaired in the lumbar spine of a rat model of congenital kyphosis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:3403-3412. [PMID: 37555955 DOI: 10.1007/s00586-023-07877-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 07/07/2023] [Accepted: 07/28/2023] [Indexed: 08/10/2023]
Abstract
PURPOSE Kyphosis involves spines curving excessively backward beyond their physiological curvature. Although the normal structure of the spinal vertebrae is extremely important for maintaining posture and the normal function of the thoracic and abdominal organs, our knowledge concerning the pathogenesis of the disease is insufficient. We herein report that the downregulation of the calcium signaling pathway is involved in the pathogenesis of congenital kyphosis. METHODS The third to fifth lumbar spine segments, the kyphotic region of Ishibashi (IS) rats, which are used as a model of congenital kyphoscoliosis, were collected. A DNA microarray, quantitative PCR, Western blotting, and immunohistochemistry were used to measure the expression of genes and proteins related to intracellular calcium signaling. RESULTS We found that the expression of calcium-sensing receptor (CaSR) and transient receptor potential vanilloid 1 (Trpv1)-two receptors involved in the calcium signaling-was decreased in the lumbar spine of IS rats. We also observed that the number of CaSR-immunoreactive and Trpv1-immunoreactive cells in the lumbar spine of IS rats was lower than in wild-type rats. Furthermore, the expression of intracellular molecules downstream of these receptors, such as phosphorylated protein kinase C, c-Jun N-terminal kinase, and neural EGFL-like 1, was also reduced. In fact, the calcium content in the lumbar spine of IS rats was significantly lower than that in wild-type rats. CONCLUSION These results indicate that adequate calcium signaling is extremely important for the regulation of normal bone formation and may also be a key factor for understanding the pathogenesis of congenital kyphosis.
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Affiliation(s)
- Itsuki Takahashi
- Department of Nutrition, Takasaki University Graduate Scholl of Health and Welfare, 37-1 Nakaorui-Machi, Takasaki, Gunma, 370-0033, Japan
| | - Yusuke Watanabe
- Department of Nutrition, Takasaki University Graduate Scholl of Health and Welfare, 37-1 Nakaorui-Machi, Takasaki, Gunma, 370-0033, Japan
| | - Hiroyuki Sonoda
- Orthopaedic Surgery, Japanese Red Cross Maebashi Hospital, Maebashi, Gunma, Japan
| | - Daisuke Tsunoda
- Spine Surgery, Higashi-Maebashi Orthopaedic Hospital, Maebashi, Gunma, Japan
| | - Izuki Amano
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Noriyuki Koibuchi
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Haku Iizuka
- Orthopedic Surgery, Isesaki Municipal Hospital, Isesaki, Gunma, Japan.
| | - Noriaki Shimokawa
- Department of Nutrition, Takasaki University Graduate Scholl of Health and Welfare, 37-1 Nakaorui-Machi, Takasaki, Gunma, 370-0033, Japan.
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
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Shimokawa N, Takahashi I, Iizuka H. Spinal malformation - A biochemical analysis using congenital kyphosis rats. J Cell Biochem 2022; 123:501-505. [PMID: 34978108 DOI: 10.1002/jcb.30206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/25/2021] [Accepted: 12/17/2021] [Indexed: 11/06/2022]
Abstract
Spinal kyphosis involves the vertebrae curving excessively backward, beyond their physiological curvature. Although the normal structure of the spinal vertebrae is extremely important for maintaining posture, the normal function of the thoracic and abdominal organs, and cosmetics, our knowledge concerning the pathogenesis of this disease is lacking. Furthermore, the responsible gene has not yet been identified. In this short review, we summarize the current state of kyphosis research and introduce the molecular and cellular mechanisms associated with the pathogenesis of this disease, based on findings obtained using rats that develop kyphosis.
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Affiliation(s)
- Noriaki Shimokawa
- Department of Nutrition, Takasaki University of Health and Welfare, Takasaki, Gunma, Japan.,Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Itsuki Takahashi
- Department of Nutrition, Takasaki University of Health and Welfare, Takasaki, Gunma, Japan
| | - Haku Iizuka
- Division of Orthopedic Surgery, Isesaki Municipal Hospital, Isesaki, Gunma, Japan
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Ishiwata S, Iizuka H, Sonoda H, Tsunoda D, Tajika Y, Chikuda H, Koibuchi N, Shimokawa N. Upregulated miR-224-5p suppresses osteoblast differentiation by increasing the expression of Pai-1 in the lumbar spine of a rat model of congenital kyphoscoliosis. Mol Cell Biochem 2020; 475:53-62. [PMID: 32748313 DOI: 10.1007/s11010-020-03859-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/26/2020] [Indexed: 01/08/2023]
Abstract
Congenital scoliosis is defined by the presence of structural anatomical malformations that arise from failures of vertebral formation or segmentation before and after birth. The understanding of genetic background and key genes for congenital scoliosis is still poor. We herein report that the excess expression of plasminogen activator inhibitor-1 (Pai-1) induced by the upregulation of miR-224-5p is involved in the pathogenesis of congenital kyphoscoliosis through impaired osteoblast differentiation. We first investigated the variety and progression of abnormalities of the lumbar spines in Ishibashi (IS) rats, a rat model of congenital kyphoscoliosis. The rats had already shown fusion and division of the primary ossification center at postnatal day 4. Over time, the rats showed various abnormalities of the lumbar spine, including the fusion of the annular epiphyseal nucleus. At postnatal day 42, spinal curvature was clearly observed due to the fusion of the vertebral bodies. Using a microRNA array, we found that the expression of miR-224-5p was increased in the lumbar spine of the rats at postnatal day 4. The expression of Pai-1, which is involved in osteoblast differentiation regulated by miR-224-5p, was also increased, while the levels of type I collagen, a marker of osteoblast differentiation, were decreased in the lumbar spine. These results indicate that the aberrant expression of miRNA-224-5p and its target genes is involved in the impaired osteoblast differentiation and may provide a partial molecular explanation for the pathogenesis of congenital scoliosis.
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Affiliation(s)
- Sho Ishiwata
- Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Haku Iizuka
- Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Isesaki Municipal Hospital, Isesaki, Japan
| | - Hiroyuki Sonoda
- Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Japanese Red Cross Maebashi Hospital, Maebashi, Japan
| | - Daisuke Tsunoda
- Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Yuki Tajika
- Department of Anatomy, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hirotaka Chikuda
- Department of Orthopedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Noriyuki Koibuchi
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Noriaki Shimokawa
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
- Department of Nutrition, Takasaki University of Health and Welfare, 31-1 Nakaorui-machi, Takasaki, Gunma, 370-0033, Japan.
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Sonoda H, Iizuka H, Ishiwata S, Tsunoda D, Abe M, Takagishi K, Chikuda H, Koibuchi N, Shimokawa N. The retinol‐retinoic acid metabolic pathway is impaired in the lumbar spine of a rat model of congenital kyphoscoliosis. J Cell Biochem 2019; 120:15007-15017. [DOI: 10.1002/jcb.28762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 12/16/2018] [Accepted: 01/10/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroyuki Sonoda
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
- Department of Integrative Physiology Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Haku Iizuka
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Sho Ishiwata
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Daisuke Tsunoda
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Masako Abe
- Department of Nutrition Takasaki University of Health and Welfare Takasaki Gunma Japan
| | - Kenji Takagishi
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Hirotaka Chikuda
- Department of Orthopedic Surgery Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Noriyuki Koibuchi
- Department of Integrative Physiology Gunma University Graduate School of Medicine Maebashi Gunma Japan
| | - Noriaki Shimokawa
- Department of Integrative Physiology Gunma University Graduate School of Medicine Maebashi Gunma Japan
- Department of Nutrition Takasaki University of Health and Welfare Takasaki Gunma Japan
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Esapa CT, Piret SE, Nesbit MA, Thomas GP, Coulton LA, Gallagher OM, Simon MM, Kumar S, Mallon AM, Bellantuono I, Brown MA, Croucher PI, Potter PK, Brown SD, Cox RD, Thakker RV. An N-Ethyl- N-Nitrosourea (ENU) Mutagenized Mouse Model for Autosomal Dominant Nonsyndromic Kyphoscoliosis Due to Vertebral Fusion. JBMR Plus 2018; 2:154-163. [PMID: 30283900 PMCID: PMC6124210 DOI: 10.1002/jbm4.10033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 01/01/2018] [Accepted: 01/14/2018] [Indexed: 02/06/2023] Open
Abstract
Kyphosis and scoliosis are common spinal disorders that occur as part of complex syndromes or as nonsyndromic, idiopathic diseases. Familial and twin studies implicate genetic involvement, although the causative genes for idiopathic kyphoscoliosis remain to be identified. To facilitate these studies, we investigated progeny of mice treated with the chemical mutagen N-ethyl-N-nitrosourea (ENU) and assessed them for morphological and radiographic abnormalities. This identified a mouse with kyphoscoliosis due to fused lumbar vertebrae, which was inherited as an autosomal dominant trait; the phenotype was designated as hereditary vertebral fusion (HVF) and the locus as Hvf. Micro-computed tomography (μCT) analysis confirmed the occurrence of nonsyndromic kyphoscoliosis due to fusion of lumbar vertebrae in HVF mice, consistent with a pattern of blocked vertebrae due to failure of segmentation. μCT scans also showed the lumbar vertebral column of HVF mice to have generalized disc narrowing, displacement with compression of the neural spine, and distorted transverse processes. Histology of lumbar vertebrae revealed HVF mice to have irregularly shaped vertebral bodies and displacement of intervertebral discs and ossification centers. Genetic mapping using a panel of single nucleotide polymorphic (SNP) loci arranged in chromosome sets and DNA samples from 23 HVF (eight males and 15 females) mice, localized Hvf to chromosome 4A3 and within a 5-megabase (Mb) region containing nine protein coding genes, two processed transcripts, three microRNAs, five small nuclear RNAs, three large intergenic noncoding RNAs, and 24 pseudogenes. However, genome sequence analysis in this interval did not identify any abnormalities in the coding exons, or exon-intron boundaries of any of these genes. Thus, our studies have established a mouse model for a monogenic form of nonsyndromic kyphoscoliosis due to fusion of lumbar vertebrae, and further identification of the underlying genetic defect will help elucidate the molecular mechanisms involved in kyphoscoliosis. © 2018 The Authors. JBMR Plus is published by Wiley Periodicals, Inc. on behalf of the American Society for Bone and Mineral Research.
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Affiliation(s)
- Christopher T Esapa
- Academic Endocrine Unit Radcliffe Department of Medicine University of Oxford Oxford Centre for Diabetes, Endocrinology and Metabolism Churchill Hospital Headington UK.,MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Sian E Piret
- Academic Endocrine Unit Radcliffe Department of Medicine University of Oxford Oxford Centre for Diabetes, Endocrinology and Metabolism Churchill Hospital Headington UK
| | - M Andrew Nesbit
- Academic Endocrine Unit Radcliffe Department of Medicine University of Oxford Oxford Centre for Diabetes, Endocrinology and Metabolism Churchill Hospital Headington UK.,School of Biomedical Sciences Ulster University Coleraine UK
| | - Gethin P Thomas
- Institute of Health and Biomedical Innovation Queensland University of Technology Translational Research Institute Princess Alexandra Hospital Brisbane Australia.,Charles Sturt University Boorooma Street Wagga Wagga Australia
| | - Leslie A Coulton
- The Mellanby Centre for Bone Research University of Sheffield Sheffield UK
| | - Orla M Gallagher
- The Mellanby Centre for Bone Research University of Sheffield Sheffield UK
| | - Michelle M Simon
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Saumya Kumar
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK.,Instituto de Medicina Molecular (IMM) Faculdade de Medicina de Universidade de Lisboa Lisboa Portugal
| | - Ann-Marie Mallon
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Ilaria Bellantuono
- The Mellanby Centre for Bone Research University of Sheffield Sheffield UK
| | - Matthew A Brown
- Institute of Health and Biomedical Innovation Queensland University of Technology Translational Research Institute Princess Alexandra Hospital Brisbane Australia
| | - Peter I Croucher
- The Mellanby Centre for Bone Research University of Sheffield Sheffield UK.,Garvan Institute for Medical Research Sydney Australia
| | - Paul K Potter
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Steve Dm Brown
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Roger D Cox
- MRC Mammalian Genetics Unit and Mary Lyon Centre MRC Harwell Institute Harwell Science and Innovation Campus Harwell UK
| | - Rajesh V Thakker
- Academic Endocrine Unit Radcliffe Department of Medicine University of Oxford Oxford Centre for Diabetes, Endocrinology and Metabolism Churchill Hospital Headington UK
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The Trk family of neurotrophin receptors is downregulated in the lumbar spines of rats with congenital kyphoscoliosis. Mol Cell Biochem 2015; 412:11-8. [DOI: 10.1007/s11010-015-2603-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/29/2015] [Indexed: 02/07/2023]
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Takano M, Ogawa E, Saitou T, Yamaguchi Y, Asano Y, Serikawa T, Kuramoto T. Morphological features of adult rats of IS/Kyo and IS-Tlk/Kyo strains with lumbar and caudal vertebral anomalies. Exp Anim 2014; 63:269-75. [PMID: 25077756 PMCID: PMC4206730 DOI: 10.1538/expanim.63.269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
IS-Tlk/Kyo, a mutant derived from IS/Kyo strain,
exhibits a kinked and/or short tail, in addition to the congenital lumbar vertebral
anomaly. Homozygotes of Tlk dominant gene are known to die during
embryonic development. We previously reported the morphological features of the skeleton
in IS/Kyo and IS-Tlk/Kyo fetuses and of the heart in
IS/Kyo fetuses [19]. This study was conducted to
clarify the morphological features of the skeleton in both adult rats and of the heart in
adult IS/Kyo rats. Ventricular septal defect (VSD) was observed in 3 out of 10 IS/Kyo
rats. Neither splitting of lumbar vertebra and supernumerary rib (in both strains) nor
fused or absent caudal cartilage (in IS-Tlk/Kyo strain) was detected in
adult rats. Fusion of lumbar vertebrae was observed in almost all specimens together with
lumbarization of sacral vertebrae in a few specimens in both adult rats as well as fusion
of sacral and caudal vertebrae only in adult IS-Tlk/Kyo rats. In
addition, a severe reduction in the ossified sacral and caudal vertebrae was noted in
adult IS-Tlk/Kyo rats (mean number: 20.6) and IS/Kyo
rats (31.8), and the difference was similar to that in the length of sacral and caudal
vertebrae. These results suggest that the Tlk gene may be involved in
both the congenital and acquired abnormal formation of the lower vertebral centra as well
as the persistent occurrence of VSD by the background gene in IS/Kyo strain.
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Affiliation(s)
- Masao Takano
- Gotemba Laboratory, Bozo Research Center Inc., 1284 Kamado, Gotemba-shi, Shizuoka 412-0039, Japan
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Itoh M, Shimokawa N, Tajika Y, Murakami T, Aotsuka N, Lesmana R, Farenia R, Iwasaki T, Okda J, Yorifuji H, Koibuchi N. Alterations of biochemical marker levels and myonuclear numbers in rat skeletal muscle after ischemia-reperfusion. Mol Cell Biochem 2012; 373:11-8. [PMID: 23065010 DOI: 10.1007/s11010-012-1470-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 09/26/2012] [Indexed: 11/28/2022]
Abstract
Prolonged ischemia-reperfusion results in various damages in skeletal muscle. Following reperfusion, although the damaged muscles undergo regeneration, the precise process and mechanism of regeneration have not yet been fully understood. Here, we show the altered levels of plasma biochemical markers of muscle damage, and the change in myonuclear numbers in adult rat skeletal muscle by ischemia-reperfusion. Male Wistar rats were subjected to unilateral hindlimb ischemia by clamping the anterior tibial artery for 2 h before reperfusion. Both plasma creatine kinase activity and C-reactive protein levels in plasma were increased significantly at 0.5 h of reperfusion and returned to the control level at 24 h. The transverse sectional area of muscle belly of the anterior tibial muscles in ischemic side was significantly decreased by 20 % compared with those in sham-ischemic (control) side at 2 days, and returned to the control level at 5 days of reperfusion. Moreover, the number of interstitial nuclei in the ischemic side were significantly increased at 5-14 days and returned to the control level at 21 days of reperfusion. Central nuclei that are specifically observed in regenerating muscle, appeared at 5 days, reached a peak at 14 days, and disappeared at 28 days of reperfusion. Furthermore, MyoD, a regulatory factor for myogenesis, showed a transient expression at 5 days of reperfusion. These results indicate that, although the size of muscle seems to be recovered by 5 days of reperfusion, the most active muscle regeneration occurs much later, as shown by the increase in central nuclei.
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Affiliation(s)
- Motoharu Itoh
- Department of Integrative Physiology, Gunma University Graduate School of Medicine, 3-39-22, Maebashi, Gunma 371-8511, Japan
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Takano M, Katsumata Y, Ogawa J, Ebata T, Urasoko Y, Asano Y, Serikawa T, Kuramoto T. Morphological features of mutant rat, IS-Tlk/Kyo, fetuses with caudal vertebral anomalies. Congenit Anom (Kyoto) 2012; 52:42-7. [PMID: 22348782 DOI: 10.1111/j.1741-4520.2011.00348.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
IS-Tlk/Kyo, a rat mutant strain derived from IS/Kyo strain, exhibits a kinked and/or short tail, in addition to a congenital anomaly of the lumbar vertebrae that is a hallmark of IS/Kyo rats. Homozygotes (Tlk/Tlk) of Tlk dominant gene are known to die during embryonic development. The present report deals with the morphological features of heterozygous IS-Tlk/Kyo rat fetuses in comparison with those of IS/Kyo rat fetuses. One of the morphological features was a high incidence of tail vertebral anomalies in IS-Tlk rats (81.6% versus 0% in IS/Kyo rats). Significantly low values in number of live fetuses and ossified 5th sternebra and sacral and caudal vertebrae were observed in IS-Tlk/Kyo rats compared with those in IS/Kyo rats as well as a low incidence of fetuses with ventral septal defects in IS-Tlk/Kyo (0% versus 54.4% in IS rats). These results suggest that the Tlk gene may be involved in the formation of the vertebral centra and the ventral septum when it expresses on the genetic background of the IS rat.
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Affiliation(s)
- Masao Takano
- Gotemba Laboratory, Bozo Research Center, Shizuoka, Japan.
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