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Takahashi T, Nagahori K, Omotehara T, Kuramasu M, Ogawa Y, Wu X, Natsuyama Y, Kawata S, Yakura T, Miyaso H, Li ZL, Itoh M. Effects of female bone marrow transplantation on male reproductive organs. J Reprod Immunol 2024; 163:104245. [PMID: 38608319 DOI: 10.1016/j.jri.2024.104245] [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: 02/05/2024] [Revised: 03/22/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024]
Abstract
Graft-versus-host disease (GVHD), an adverse effect after bone marrow transplantation (BMT), may affect male reproductive function. It is hypothesized that a sex-mismatched BMT induces GVHD in male reproductive organs because female immune cells are not immunologically tolerant to specific antigens of the male organs. However, this hypothesis has not been experimentally verified using male (M) recipient animals following BMT from the female (F) donors. Therefore, the aim of the present study is to examine whether the female BMT to males (F→M group) induces some GVHD reactions in the testis and the other male reproductive organs. The results showed that no inflammation was found in recipients of the male BMT to males (M→M group), whereas significant inflammatory cell responses lasting for at least 4 months were induced in testis, epididymis, prostate and preputial gland in some mice of F→M group. The most severe lesion was found in the preputial gland, in which lymphocytic inflammation was accompanied by loss of glandular acini, thickening of the interstitum and increased cytokines such as TNF-α and IFN-γ. Western blot analyses revealed that sera from the F→M group reacted with various antigens of the male reproductive organs. These results indicate that transplanted female immune cells may recognize the male reproductive organs as immunologically foreign ones and induce chronic GVHD, which may affect male reproductive function.
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Affiliation(s)
- Tatsuhiko Takahashi
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan; Department of Anatomy and Cellular Biology, Basic Medical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Takuya Omotehara
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan; Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Yuki Ogawa
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Xi Wu
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Yutaro Natsuyama
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Hidenobu Miyaso
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan; Department of Anatomy, Faculty of Medicine, School of Medicine, International University of Health and Welfare, 4-3 Kozunomori, Narita, Chiba 286-8686, Japan
| | - Zhong-Lian Li
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-Ku, Tokyo 160-8402, Japan.
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Natsuyama Y, Yang T, Li R, Shimada K, Uetake S, Ren K, Kamikawa Y, Tokita K, Kojima R, Itoh M, Yi SQ. Comparative study of the peroneus tertius muscle in pigs based on the origin, course, insertion and innervation. Folia Morphol (Warsz) 2024:VM/OJS/J/98348. [PMID: 38299444 DOI: 10.5603/fm.98348] [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: 11/29/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND That the peroneus tertius muscle (PT) is a separate entity has been debated. PT has been reported to be part of the extensor digitorum longus muscle, part of the extensor digitorum brevis, or a separate muscle. While pigs have a PT as well as primates, there are no reports of its association with the extensor digitorum longus muscle or extensor digitorum brevis. MATERIALS AND METHODS In this study, we used gross dissection and Sihler's staining to determine the origin, course, insertion, and innervation of the pig PT. RESULTS The PT and extensor digitorum longus muscles jointly originated from the femur and ran between the tibialis cranialis and peroneus longus muscles. The PT was inserted at the retinaculum of the metatarsal extensors, tarsal bone, and second metatarsal bone. The branches of the common fibular nerve to the extensor digitorum longus muscle were distributed to the PT. CONCLUSIONS The innervations suggest that the PT and extensor digitorum longus muscles of the pig were derived from the same muscle mass during development but were named separately due to differences in their morphology. Furthermore, morphological features suggest that pig PT and human PT are probably different muscles.
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Affiliation(s)
- Yutaro Natsuyama
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan.
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan.
| | - Ting Yang
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Rujia Li
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Kazuyuki Shimada
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Shunichi Uetake
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Ke Ren
- Faculty of Physical Education, Qu Jing Normal University, Yun Nan, China
| | - Yasuko Kamikawa
- Department of Maxillofacial Diagnostic and Surgical Science Field of Oral and Maxillofacial Rehabilitation, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Konosuke Tokita
- Department of Physical Therapy, Faculty of Health Sciences, Saitama Medical University, Saitama, Japan
| | - Ryuhei Kojima
- Department of Physical Therapy, Faculty of Health Sciences, Saitama Medical University, Saitama, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Shuang-Qin Yi
- Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
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Okazaki T, Omotehara T, Kawata S, Amano T, Enomoto M, Nagakawa Y, Itoh M. Two Types of Variational Arteries' Courses From the Superior Mesenteric Artery to Supply the Splenic Flexure: Gross Anatomical Study. Dis Colon Rectum 2024; 67:120-128. [PMID: 37493262 DOI: 10.1097/dcr.0000000000002967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
BACKGROUND Complete mesocolic excision with central vascular ligation is a standard method for managing colon cancer. However, there is no consensus on its procedure, especially for cancer in the splenic flexure of the transverse colon. This is because various types of variational arteries are distributed to the region, and their running course below and near the pancreas leads to difficulty in ligating the artery. OBJECTIVE To clarify the arterial distribution to the splenic flexure of the transverse colon using cadavers. DESIGN The arteries in the transverse mesocolon distributed to the colon were dissected in cadavers, and their route was quantitatively visualized using drawing software. SETTINGS This study was conducted at the Department of Anatomy, Tokyo Medical University. PATIENTS Sixty cadavers donated to Tokyo Medical University in 2017-2021 were used. MAIN OUTCOME MEASURES The arterial courses to the splenic flexure of the transverse colon in the mesocolon and their patterns were evaluated. RESULTS We found 34 variational arteries distributed to the splenic flexure of the transverse colon. Most originated from the superior mesenteric artery and the middle colic artery, with their typical course below the pancreas. We identified another arterial course, crossing the mesocolon away from the pancreas toward the splenic flexure of the transverse colon. Furthermore, the origin of these arteries was not behind the pancreas and can be found in the caudal region of the pancreas. LIMITATIONS We cannot discuss how the arteries within the transverse mesocolon are observed by CT examination. CONCLUSIONS This study showed 2 types of arterial courses (below the pancreas and within the mesocolon) toward the splenic flexure of the transverse colon for the first time. In the latter case, the complete mesocolic excision with central vascular ligation is likely performed more easily than in the former. See Video Abstract. DOS TIPOS DE RECORRIDO VARIACIONAL DE LA ARTERIA DESDE LA ARTERIA MESENTRICA SUPERIOR PARA IRRIGAR EL NGULO ESPLNICO ESTUDIO ANATMICO MACROSCPICO ANTECEDENTES:La escisión mesocólica completa con ligadura vascular central es un método estándar para el cáncer de colon. Sin embargo, no hay consenso sobre su procedimiento, especialmente para el cáncer en el ángulo esplénico del colon transverso. Esto se debe a que varios tipos de arterias variacionales se distribuyen en la región, y su recorrido por debajo y cerca del páncreas dificulta la ligadura de la arteria.OBJETIVO:Este estudio tuvo como objetivo aclarar la distribución arterial al SF del colon transverso utilizando cadáveres.DISEÑO:Las arterias en el mesocolon transverso distribuidas al colon fueron disecadas en cadáveres, y su ruta fue visualizada cuantitativamente utilizando un software de dibujo.AJUSTES:Este estudio se realizó en el Departamento de Anatomía de la Universidad Médica de Tokio.PACIENTES:Se utilizaron sesenta cadáveres donados a la Universidad Médica de Tokio en 2017-2021.PRINCIPALES MEDIDAS DE RESULTADO:Se evaluaron los cursos arteriales al ángulo esplénico del colon transverso en el mesocolon y sus patrones.RESULTADOS:Encontramos 34 arterias variacionales distribuidas al ángulo esplénico del colon transverso. La mayoría se originaron en la arteria mesentérica superior y la arteria cólica media, con su trayecto típico por debajo del páncreas. Identificamos otro curso arterial, cruzando el mesocolon alejándose del páncreas hacia el ángulo esplénico del colon transverso. Además, el origen de estas arterias no estaba detrás del páncreas y se pueden encontrar en la región caudal del páncreas.LIMITACIONES:No podemos discutir cómo se observan las arterias dentro del mesocolon transverso mediante un examen de tomografía computarizada.CONCLUSIONES:Este estudio mostró por primera vez dos tipos de trayectos arteriales (por debajo del páncreas y dentro del mesocolon) hacia el ángulo esplénico del colon transverso. En el último caso, es probable que la escisión mesocólica completa con ligadura vascular central se realice más fácilmente que en el primero. (Traducción-Dr. Aurian Garcia Gonzalez ).
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Affiliation(s)
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
- Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Takahiro Amano
- Department of Colorectal Surgery, Gastrointestinal Center, Cancer Institute Hospital, Tokyo, Japan
| | - Masanobu Enomoto
- Department of Gastrointestinal and Pediatric Surgery, Tokyo Medical University, Tokyo, Japan
| | - Yuichi Nagakawa
- Department of Gastrointestinal and Pediatric Surgery, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Miyaso H, Yokota S, Suga K, Hashimoto Y, Kouno C, Nagahori K, Itoh M, Kitajima S. Histological differences between the central and peripheral areas of the testes of busulfan-administered mice. J Toxicol Sci 2024; 49:139-149. [PMID: 38556351 DOI: 10.2131/jts.49.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Busulfan is an anticancer drug known to cause serious damage to seminiferous tubules in the testes and deplete germ cells in human and animal models. The testicular artery is anastomosed with deferential and cremasteric arteries and is divided into capsular arteries, which give rise to the centripetal arteries and then recurrent arteries. The arterial blood in the testicular tissue is supplied by such a consequent system of arterial vessels, in order from the peripheral to the central area. As anticancer drugs are generally distributed throughout the whole body via the bloodstream and the running and distribution of arteries differ among the testicular areas, we hypothesized that the efficacy of busulfan differs in different testicular areas, particularly between the central and peripheral areas. In this study, busulfan was intraperitoneally injected at 40 mg/kg body weight into C57BL/6J male mice. After 28 days, in busulfan-treated mice, the diameters of seminiferous tubules were significantly higher in the central than in the peripheral area of the testes. The seminiferous tubular areas also significantly decreased in the peripheral areas compared with the central areas. The number of germ cells per seminiferous tubule was significantly higher in the central than in the peripheral area. Sertoli cell nuclei were detached into the lumen in the peripheral area. The number of Leydig cells was significantly lower in the peripheral areas. These data suggest that the effects of busulfan differ between the central and peripheral areas of the testis at 4 weeks after busulfan administration.
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Affiliation(s)
- Hidenobu Miyaso
- Department of Anatomy, Faculty of Medicine, School of Medicine, International University of Health and Welfare
- Department of Anatomy, Tokyo Medical University
| | - Satoshi Yokota
- Division of Cellular & Molecular Toxicology, Center for Biological Safety & Research, National Institute of Health Sciences
| | - Kousuke Suga
- Division of Cellular & Molecular Toxicology, Center for Biological Safety & Research, National Institute of Health Sciences
| | - Yui Hashimoto
- Department of Nursing, School of Nursing at Narita, International University of Health and Welfare
| | - Céline Kouno
- Department of Nursing, School of Nursing at Narita, International University of Health and Welfare
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine
| | | | - Satoshi Kitajima
- Division of Cellular & Molecular Toxicology, Center for Biological Safety & Research, National Institute of Health Sciences
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Masuyama T, Sato I, Ueda Y, Kawata S, Yakura T, Itoh M. Neurotransmission, Vasculogenesis, and Osteogenesis Activities are Altered in the Aging Temporomandibular Joint of the Senescence-Accelerated Prone 8 Mouse Model. J Oral Maxillofac Surg 2024; 82:19-35. [PMID: 37832598 DOI: 10.1016/j.joms.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 10/15/2023]
Abstract
BACKGROUND Alterations in neurotransmission, vasculogenesis, and osteogenesis pathways that may play pivotal roles in age-related changes in the temporomandibular joint (TMJ) are poorly understood. PURPOSE This study aimed to measure the associations between gene and protein profiles in senescence-accelerated prone 8 (SAMP8) mice. STUDY DESIGN The investigators designed and used 3 groups of 2 mouse models: 1) early aging SAMP8 at 24 weeks of age and control SAMR1 at 12 and 24 weeks (each stage n = 12). PREDICTOR/EXPOSURE/INDEPENDENT VARIABLE The independent variable was investigated using 3 mouse models: an early aging mouse model and a control mouse model (12 and 24 weeks). MAIN OUTCOME VARIABLE(S) The primary outcome variables were CGRP, VEGF-A, CD31, LYVE-1, osteocalcin, osteopontin, type I and II collagen, and MMP-2. The secondary outcome variables were histological characteristics. COVARIATES Not applicable. ANALYSES The gene and protein expression profiles of neurotransmitters, vasculogenesis, and osteogenesis were identified by quantitative real-time polymerase chain reaction and dot blot analysis, respectively. The cellular localization of these events was verified by in situ hybridization and immunohistochemistry. Bivariate statistics were computed for each of the outcome variables. Statistical significance was set to a P value < .05. RESULTS The expression of CGRP mRNA in the bony mandibular condyle (BMC) of SAMP8 mice (SAMP8, 3.3 ± 0.39 vs SAMR1, 0.001 ± 0.0001) was high at 24 weeks of age (24 weeks) (P < .001). Higher numbers of cells positive percentage for CGRP (MF, SAMP8, 28.67 ± 1.60 vs SAMR 1, 6.36 ± 1.10; CMC, 27.5 ± 2.12 vs 9.00 ± 1.21; BMC, 31.31 ± 2.81 vs 7.85 ± 1.14) and VEGF-A (MF, 34.43 ± 2.45 vs 14.01 ± 1.28; MD, 32.69 ± 1.86 vs 8.00 ± 0.91; CMC, 36.60 ± 2.05 vs 14.19 ± 1.25 BMC 36.49 vs 12.59 ± 1.41) antibodies were found in the 24 weeks TMJ (P < .01). CONCLUSIONS AND RELEVANCE The neurotransmitter, vasculogenesis, and osteogenesis pathways are associated with TMJ aging in the SAMP8 mouse model. In the future, the SAMP8 mouse model may prove to be a robust model for identifying molecular and biochemical events underlying the effects of feeding, occlusal changes, and tooth loss in the aging TMJ.
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Affiliation(s)
| | - Iwao Sato
- Visiting Professor, Department of Anatomy, Tokyo Medical University, Tokyo, Japan.
| | - Yoko Ueda
- Research, Associate Professor, Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Shinichi Kawata
- Assistant Professor, Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Tomiko Yakura
- Associate Professor, Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Chief Professor, Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Ishi Y, Omotehara T, Wu X, Kuramasu M, Kawata S, Itoh M. Distribution of Contractile Structures in a Mouse and Human Lymph Node Associated with Lymph Flow. Acta Histochem Cytochem 2023; 56:137-144. [PMID: 38318104 PMCID: PMC10838635 DOI: 10.1267/ahc.23-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/28/2023] [Indexed: 02/07/2024] Open
Abstract
Lymph nodes have contractile structures, but their distribution in a lymph node has been less considered in terms of facilitation of lymph flow. Axillary, inguinal, and mesenteric lymph nodes were collected from mice and human cadavers, and their sections were immunostained for alpha-smooth muscle actin (αSMA) and high molecular weight caldesmon (H-caldesmon). The αSMA-positive cells were localized in the capsule beneath the ceiling epithelium on the afferent side in both mice and humans. We found an additional layer of the αSMA-positive cells in the human lymph node, surrounding the inner layer perpendicularly. H-caldesmon was expressed only in these cells of the outer layer. In some human lymph nodes highly containing fat tissue in the medulla, the capsule disappeared on the efferent side, resulting in a disrupted sinusoidal lymph pathway. These findings suggest that human lymph nodes have additional smooth muscles in the outer region of the capsule to facilitate lymph flow. The αSMA-positive cells in the outer and inner layers of human lymph nodes probably have different functions in contraction. The presence of lipomatosis in a human lymph node will reduce its contribution to the lymph flow.
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Affiliation(s)
- Yasuhisa Ishi
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
- Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Xi Wu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Omotehara T, Nakata H, Nagahori K, Kuramasu M, Ichimura K, Itoh M. A Single Administration of Progesterone during the Neonatal Period Shows No Structural Changes in Male Reproductive Tracts in Mice. Acta Histochem Cytochem 2023; 56:127-136. [PMID: 38318101 PMCID: PMC10838630 DOI: 10.1267/ahc.23-00052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/10/2023] [Indexed: 02/07/2024] Open
Abstract
The concentration of female-dominant steroid hormones, such as progesterone and estrogen, drops after birth in neonates. We have reported that neonatal estrogen treatment results in inflammation in the epididymis after puberty in male mice. Our recent study discovered that progesterone receptor was specifically expressed in efferent ducts just before birth in male mice. Therefore, this study aimed to reveal the impact of neonatal progesterone administration on the efferent ducts after puberty. Progesterone was subcutaneously administered to neonatal mice on their birthday in three groups: high-dose (200 mg/kg), low-dose (8 mg/kg), and control (cottonseed oil). Their testis and epididymis were collected at 12 weeks old. Semi-serial paraffin sections of these tissues were prepared and evaluated through PAS-hematoxylin staining. Efferent ducts were reconstructed into a three-dimensional structure, and their length and volume were analyzed. Spermatogenesis in the testis and epithelium of the tracts appeared normal, even in individuals administered with progesterone. There were no significant differences in the length and volume of the efferent ducts among the three groups. This study suggests that progesterone treatment in neonatal mice does not cause any structural changes in the male reproductive tracts at puberty, unlike the neonatal estrogen treatment.
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Affiliation(s)
- Takuya Omotehara
- Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Hiroki Nakata
- Department of Clinical Engineering, Faculty of Health Sciences, Komatsu University, Ishikawa, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
- Division of Basic Medical Science, Department of Anatomy, Tokai University School of Medicine, Kanagawa, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Koichiro Ichimura
- Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Ueda Y, Nakamata O, Kakizaki F, Natsuyama Y, Kawata S, Yakura T, Li ZL, Qu N, Itoh M. Relationship between scapular elevation exercises with different alignments and activity of the trapezius and levator scapulae muscles. J Phys Ther Sci 2023; 35:751-756. [PMID: 37915451 PMCID: PMC10618018 DOI: 10.1589/jpts.35.751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/21/2023] [Indexed: 11/03/2023] Open
Abstract
[Purpose] This study aimed to examine whether scapular elevation exercises in sitting positions with different alignments lead to contractions of the trapezius and levator scapulae muscles. [Participants and Methods] The participants were 25 males, measured in four sitting positions with different alignments. Spine alignment was assessed by measuring the head protrusion, upper thoracic spine tilt, and pelvic tilt angles. Upper limb alignment was evaluated using the scapula tilt angle, scapula rotation angle, and distance between scapular spinous processes. Scapular elevation exercises were measured, and the thickness of the trapezius and levator scapulae muscles were measured in resting and elevated positions, with changes in muscle thickness. [Results] The trapezius muscle thickness was greater in the sitting position with less thoracic spine tilt and scapula tilt angles. Conversely, the levator scapulae muscle thickness was greater in the sitting position with more thoracic spine tilt and scapula tilt angles. [Conclusion] Scapular elevation exercises induce separate contractions of the trapezius and levator scapulae muscles by modifying the alignment of the spine and upper limbs.
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Affiliation(s)
- Yasuhisa Ueda
- Department of Anatomy, Tokyo Medical University,
Japan
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan
| | - Osamu Nakamata
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan
| | - Fujiyasu Kakizaki
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan
| | | | | | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University,
Japan
| | | | - Ning Qu
- Department of Anatomy, Tokyo Medical University,
Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University,
Japan
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Omotehara T, Hess RA, Nakata H, Birch LA, Prins GS, Itoh M. Expression patterns of sex steroid receptors in developing mesonephros of the male mouse: three-dimensional analysis. Cell Tissue Res 2023; 393:577-593. [PMID: 37335379 DOI: 10.1007/s00441-023-03796-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023]
Abstract
The androgen pathway via androgen receptor (AR) has received the most attention for development of male reproductive tracts. The estrogen pathway through estrogen receptor (ESR1) is also a major contributor to rete testis and efferent duct formation, but the role of progesterone via progesterone receptor (PGR) has largely been overlooked. Expression patterns of these receptors in the mesonephric tubules (MTs) and Wolffian duct (WD), which differentiate into the efferent ductules and epididymis, respectively, remain unclear because of the difficulty in distinguishing each region of the tracts. This study investigated AR, ESR1, and PGR expressions in the murine mesonephros using three-dimensional (3-D) reconstruction. The receptors were localized in serial paraffin sections of the mouse testis and mesonephros by immunohistochemistry on embryonic days (E) 12.5, 15.5, and 18.5. Specific regions of the developing MTs and WD were determined by 3-D reconstruction using Amira software. AR was found first in the specific portion of the MTs near the MT-rete junction at E12.5, and the epithelial expression showed increasing strength from cranial to the caudal regions. Epithelial expression of ESR1 was found in the cranial WD and MTs near the WD first at E15.5. PGR was weakly positive only in the MTs and cranial WD starting on E15.5. This 3-D analysis suggests that gonadal androgen acts first on the MTs near the MT-rete junction but that estrogen is the first to influence MTs near the WD, while potential PGR activity is delayed and limited to the epithelium.
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Affiliation(s)
- Takuya Omotehara
- Department of Anatomy and Life Structure, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, 113-8421, Japan.
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan.
| | - Rex A Hess
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Chicago, IL, 61821, USA
| | - Hiroki Nakata
- Department of Clinical Engineering, Faculty of Health Sciences, Komatsu University, Komatsu, Japan
| | - Lynn A Birch
- Department of Urology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Gail S Prins
- Department of Urology, College of Medicine, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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10
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Kawana K, Fukui A, Chishima F, Takada K, Itoh M. Editorial (JSIR2021 Special issue). J Reprod Immunol 2023; 158:103976. [PMID: 37331086 DOI: 10.1016/j.jri.2023.103976] [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: 06/20/2023]
Affiliation(s)
- Kei Kawana
- Department of Obstetrics and Gynecology, Nihon University School of Medicine
| | - Atsushi Fukui
- Department of Obstetrics and Gynecology, Hyogo Medical University School of Medicine.
| | - Fumihisa Chishima
- Department of Obstetrics and Gynecology, Nihon University School of Medicine
| | - Kazuhide Takada
- Division of Microbiology, Department of Pathology and Microbiology Nihon University School of Medicine
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11
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Takiguchi M, Sato I, Ueda Y, Kawata S, Natsuyama Y, Yakura T, Li ZL, Itoh M. Structural and CBCT analysis of mandibular canal microvessels expressing neurotransmitters in human cadavers. Surg Radiol Anat 2023:10.1007/s00276-023-03184-x. [PMID: 37405410 DOI: 10.1007/s00276-023-03184-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 06/14/2023] [Indexed: 07/06/2023]
Abstract
PURPOSE This study focused on the detailed structure of microvessels of the neurotransmitter-positive vasa nervorum of the inferior alveolar nerve, vein, and artery in the mandibular canal (MC) to obtain information for improved safety in dental treatments. We also observed the detailed structure of the MC from the mental foramen to the mandibular foramen using cone-beam computed tomography (CBCT). METHODS In this study, mandibles from 45 sides of 23 human cadavers aged 76-104 years were examined by microscopy, immunohistochemistry, and CBCT analysis. These data were further evaluated by principal component analysis (PCA). RESULTS The microvessels of the vasa nervorum with calcitonin gene-related peptide- and neuropeptide Y-positive reactions were classified into 5 types: large (4.19%, 28/667); irregular large (7.35%, 49/667), numerous intermediate (29.23%, 195/667), irregular intermediate (29.23%, 195/667), and scattered fine (30.0%, 200/667) microvessels. The MC showed various structures from the 3rd molar to the premolars and was also classified into three types, including complete (57.0%, 228/400), partial (33.8%, 135/400), and unclear (9.2%, 37/400), from the mandibular foramen to the mental foramen. PCA results revealed that developed capillaries were mainly localized in the molar region. CONCLUSIONS Fine microvessels of the vasa nervorum expressing neurotransmitters are present from the molar to premolar region, which is key information for mandibular dental treatments. The different microvessel structures also indicate differences in specific characteristics between dentulous and edentulous cadavers regarding oral surgical and implant treatments.
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Affiliation(s)
- Masachika Takiguchi
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Yoko Ueda
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Yutaro Natsuyama
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
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12
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Nakamura C, Sato I, Ueda Y, Kawata S, Nagahori K, Omotehara T, Yakura T, Natsuyama Y, Li ZL, Itoh M. Expression of neurotransmitters, vasculogenesis markers and myosin heavy chain isoforms in the masseter muscle of senescence-accelerated mouse prone 8 mice. J Oral Rehabil 2023. [PMID: 36951759 DOI: 10.1111/joor.13449] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 03/24/2023]
Abstract
BACKGROUND Learning and memory deficits and pathologic changes in the hippocampus caused by toothlessness and soft diet feeding are related to reduced masseter muscle (MM) function. OBJECTIVE Myosin heavy chain (MyHC) isoform expression in the MM also changes under different chewing conditions. The neurotransmitter calcitonin gene-related peptide (CGRP) and vascular endothelial growth factor A (VEGF-A) are involved in MM formation. However, the relationship between CGRP, VEGF-A and MyHC isoforms in the MM in the senescence-accelerated mouse prone 8 (SAMP8) strain, a model of learning and memory deficits, remains unclear. METHODS Changes in CGRP, VEGF-A, vasculogenesis marker, and MyHC isoform mRNA expression in the MMs of aging SAMP8 and senescence-accelerated mouse resistant 1 (SAMR1) mice was investigated through quantitative real-time polymerase chain reaction (qRT-PCR) and in situ hybridization. RESULTS qRT-PCR revealed obviously high CGRP levels in the SAMP8 mouse MM (p<0.001). MyHC-IId/x mRNA expression in the MM was higher in 24-week-old SAMP8 mice than 24-week-old SAMR1 mice (p<0.001) but lower in slow-MyHC SAMP8 mice than SAMR1 mice (p<0.001). CGRP mRNA was observed on the muscle fibers of the SAMP8 mouse MM but not the SAMR1 mouse MM through in situ hybridization. Principal component analysis (PCA) revealed strong positive contributions of SAMP8-MyHC-IId/x, SAMP8-CGRP, SAMR1-MyHC-emb, SAMR1-CGRP, SAMR1-VEGF-A, SAMR1-CD31, SAMP8-VEGF-A, and SAMP8-CD31 in the MM at 12 and 24 weeks. CONCLUSION CGRP is also key for the MyHC-IId/x and slow-MyHC patterns in the MMs of SAMP8 mice.
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Affiliation(s)
- Chiaki Nakamura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Yoko Ueda
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Yutaro Natsuyama
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
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13
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Sato T, Fukui T, Kawata S, Nagahori K, Miyaso H, Li Z, Omotehara T, Itoh M. The interrelationship between three-dimensional foot mobility and bodyweight bearing. J Phys Ther Sci 2023; 35:199-203. [PMID: 36866006 PMCID: PMC9974320 DOI: 10.1589/jpts.35.199] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/01/2022] [Indexed: 03/04/2023] Open
Abstract
[Purpose] To clarify the three-dimensional nature of foot mobility and its interrelationships within the foot due to bodyweight bearing. [Participants and Methods] Data regarding left foot mobility due to body weight bearing were collected from 31 healthy adults. Foot shape differences while sitting and standing, and their interrelationship were examined. The same examiner reapplied the landmark stickers when misaligned during measurement position changes. [Results] The foot length, heel width, forefoot width, hallux valgus angle, and calcaneus eversion angle were significantly larger in the standing than in sitting position. The digitus minimus varus angle was significantly smaller in the standing than in sitting position. The medial and lateral malleoli, navicular, and dorsum of the foot were displaced medially and inferiorly; the other indices, except for the midfoot, were displaced anteriorly. The interrelationships within the foot showed a positive correlation between the calcaneus eversion angle and the medial displacement of the medial and lateral malleoli, navicular, and dorsum of the foot points. There was a negative correlation between the calcaneus eversion angle and inferior displacement of the medial malleolus, navicular, and dorsum of the foot. [Conclusion] The intra-foot coordination relationship in response to bodyweight bearing was clarified.
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Affiliation(s)
- Toshihiko Sato
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan, Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University, Japan,Corresponding author. Toshihiko Sato (E-mail: )
| | - Tsutomu Fukui
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University, Japan, Health Care Science, Graduate School, Bunkyo Gakuin
University, Japan
| | - Shinichi Kawata
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Hidenobu Miyaso
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Zhonglian Li
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, School of Medicine, Tokyo Medical
University: 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
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14
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Hirosawa A, Kakizaki F, Komuro N, Homma Y, Omotehara T, Kawata S, Nagahori K, Yakura T, Li ZL, Itoh M. Relationship between the bilateral ratios of the thoracic shape and electromyographic activity of the thoracic and lumbar iliocostalis muscles during thoracic lateral translation. J Phys Ther Sci 2023; 35:185-192. [PMID: 36866015 PMCID: PMC9974312 DOI: 10.1589/jpts.35.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/01/2022] [Indexed: 03/04/2023] Open
Abstract
[Purpose] This study aimed to determine the relationship between thoracic lateral deviation, the bilateral ratio of the thoracic shape, and the bilateral ratio of the thoracic and lumbar iliocostalis muscles during resting sitting and thoracic lateral translation. [Participants and Methods] We included 23 healthy adult males in the study. The measurement tasks were resting sitting and thoracic lateral translation relative to the pelvis. The thoracic lateral deviation and bilateral ratio of the upper and lower thoracic shapes were measured using three-dimensional motion capture. The bilateral ratio of the thoracic and lumbar iliocostalis muscles were measured using the surface electromyographic recording. [Results] The bilateral ratio of the lower thoracic shape was significantly positively correlated with the thoracic translation distance and the bilateral ratio of the thoracic and iliocostalis muscles. In addition, the bilateral ratio of the thoracic iliocostalis muscles was significantly negatively correlated with the bilateral ratios of the lower thoracic shape and lumbar iliocostalis muscles. [Conclusion] Our findings showed that the asymmetry of the lower thoracic shape is associated with left lateral deviation of the thorax at rest and thoracic translation distance. In addition, the thoracic and lumbar iliocostalis muscle activity differed between the left and right translations.
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Affiliation(s)
- Akira Hirosawa
- Department of Anatomy, Tokyo Medical University,
Japan, Department of Rehabilitation, Takashimadaira Chuo General
Hospital, Japan
| | - Fujiyasu Kakizaki
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino-shi, Saitama 356-8533,
Japan,Corresponding author. Fujiyasu Kakizaki (E-mail: )
| | - Naruyoshi Komuro
- Department of Anatomy, Tokyo Medical University,
Japan, Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino-shi, Saitama 356-8533,
Japan
| | - Yuuki Homma
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino-shi, Saitama 356-8533,
Japan
| | | | | | | | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University,
Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University,
Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University,
Japan
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15
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Asaumi R, Sato I, Takiguchi M, Kawata S, Nagahori K, Omotehara T, Yakura T, Kawai T, Itoh M. Three-dimensional structure of the facial canal and related blood vessels and nerves in the temporal bone. Surg Radiol Anat 2023; 45:121-135. [PMID: 36596940 DOI: 10.1007/s00276-022-03065-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 12/19/2022] [Indexed: 01/05/2023]
Abstract
PURPOSE There are only limited anatomical data on nerves, veins, and arteries in the temporal bone. More detailed anatomical data are required to improve planning of treatments targeting the temporal bone region. Herein, we performed a detailed analysis of the facial canal (FC) and the related carotid artery and vein. METHODS We examined the bony structure of the middle ear and FC, jugular foramen, and carotid canal in 30 Japanese elderly donor cadavers. Three-dimensional reconstruction of the canal structure was achieved using cone beam computed tomography, while macroscopic and histological analyses were also performed. RESULTS The FC form was classified as either straight (28%) or bent (72%). There were significant differences in the diameter of the FC and the distance between the internal jugular vein, other FC branches, and the FC. Principal component analysis (PCA) was performed for the FC using 29 factors. Two principal components significantly explained 30.9% (component 1, 18.6%; component 2, 12.3%) of the FC. Histological observation showed numerous ganglion cells and shrunken neurons in the geniculate ganglion of the facial nerve of elderly samples. CONCLUSION FC diameter is an important contributor to the relationship between the FC and the jugular foramen. The FC and the internal jugular vein are located close to each other, which is useful information for the trans-canal surgery of the otology. Furthermore, the geniculate ganglion contains numerous ganglion cells and shrunken neurons, which may affect the FC structure during bone matrix remodeling with aging.
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Affiliation(s)
- Rieko Asaumi
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan.
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Masachika Takiguchi
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Taisuke Kawai
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, 102-8159, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan
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16
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Adschiri T, Takami S, Umetsu M, Ohara S, Naka T, Minami K, Hojo D, Togashi T, Arita T, Taguchi M, Itoh M, Aoki N, Seong G, Tomai T, Yoko A. Supercritical Hydrothermal Reactions for Material Synthesis. BCSJ 2023. [DOI: 10.1246/bcsj.20220295] [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] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Tadafumi Adschiri
- WPI – Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
- New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Seiichi Takami
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603
| | - Mitsuo Umetsu
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579
| | - Satoshi Ohara
- Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Osaka, 567-0047
| | - Takashi Naka
- National Institute of Materials Sciences (NIMS), 1-2-1 Sengen, Tsukuba 305-0047
| | - Kimitaka Minami
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565
| | - Daisuke Hojo
- WPI – Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Takanari Togashi
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata, 990-8560
| | - Toshihiko Arita
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Minori Taguchi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Masahiro Itoh
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Nobuaki Aoki
- WPI – Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Gimyeong Seong
- New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579
| | - Takaaki Tomai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
| | - Akira Yoko
- WPI – Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577
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17
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Komuro N, Kakizaki F, Hirosawa A, Homma Y, Omotehara T, Kawata S, Nagahori K, Yakura T, Li ZL, Itoh M. Relationship between the thoracic asymmetry in standing position and the asymmetry of ankle moment in the frontal plane during gait. J Phys Ther Sci 2023; 35:18-23. [PMID: 36628136 PMCID: PMC9822818 DOI: 10.1589/jpts.35.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/03/2022] [Indexed: 01/01/2023] Open
Abstract
[Purpose] We aimed to investigate the relationship of thoracic asymmetry in standing position with asymmetry of the internal ankle moment in the frontal plane during gait. [Participants and Methods] The following measurements were recorded in 22 healthy adult males using a 3D motion analyzer and force plates: thoracic lateral deviation, asymmetrical ratios of the upper and lower thoracic shape, internal ankle moment in the frontal plane, mediolateral deviations of the center of mass and center of pressure. [Results] In the standing position, the thorax was deviated to the left relative to the pelvis, and the upper and lower thoracic shapes were asymmetrical. During gait, significant lateralities were observed in the internal ankle moment in the frontal plane, mediolateral deviations of the center of mass and the center of pressure. Significant positive correlations were observed between the asymmetrical ratio of the lower thoracic shape and both the asymmetry of the internal ankle moment in the frontal plane and the mediolateral deviation of the center of pressure. [Conclusion] These results suggest that thoracic asymmetry is associated with mediolateral control of the ankle during gait.
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Affiliation(s)
- Naruyoshi Komuro
- Department of Anatomy, Tokyo Medical University,
Japan, Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan
| | - Fujiyasu Kakizaki
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan,Corresponding author. Fujiyasu Kakizaki (E-mail: )
| | - Akira Hirosawa
- Department of Anatomy, Tokyo Medical University,
Japan, Department of Rehabilitation, IMS Group Takashimadaira Chuo
General Hospital, Japan
| | - Yuuki Homma
- Department of Physical Therapy, Faculty of Health Science
Technology, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533,
Japan
| | | | | | | | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University,
Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University,
Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University,
Japan
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18
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Steinke H, Saito T, Kuehner J, Reibetanz U, Heyde CE, Itoh M, Voelker A. Sacroiliac innervation. Eur Spine J 2022; 31:2831-2843. [PMID: 36029360 DOI: 10.1007/s00586-022-07353-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE To investigate the innervation pattern of the sacroiliac region, especially with regard to the sacroiliac joint (SIJ). Dorsal SIJ innervation was analyzed and described. Our main hypothesis was that nerves reach the SIJ dorsally, passing ligamental compartments, as this would explain dorsal SIJ pain. METHODS To examine sacroiliac innervation, we followed the nerves in over 50 specimens over several years. Plastinated slices were evaluated, nerves in the region were stained histologically, and the data were summarized as 3D models. RESULTS The Rami communicans and posterior branches of the spinal nerves and their branches that form a dorsal sacral plexus and communicating branches, together with corresponding vessels, were observed to form neurovascular bundles embedded by tiny fatty connectives in gaps and tunnels. Branches of L5-S1 pass the inner sacroiliac ligaments (the interosseous sacroiliac ligament and axial interosseous ligament). The outer sacroiliac ligaments (posterior sacroiliac ligaments, long posterior sacroiliac ligament, sacrotuberal ligament, thoracolumbar fascia) are passed by the S1-S4 branches. However, although the paths of these nerves are in the direction of the SIJ, they do not reach it. It is possible that impingement of the neurovascular bundles may result in pain. Moreover, the gaps and tunnels connect to the open dorsal SIJ. CONCLUSION Our findings suggest that Bogduk's term "sacroiliac pain" correlates to "sacroiliac innervation", which consists of "inner-" and "outer sacroiliac ligament innervation", and to ventral "SIJ pain". The watery gaps and tunnels observed could play a significant role in innervation and thus in the origins of SIJ pain. LEVEL OF EVIDENCE Individual cross-sectional studies with consistently applied reference standard and blinding.
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Affiliation(s)
- Hanno Steinke
- Department of Anatomy, University Leipzig, Liebigstr. 13, 04103, Leipzig, Germany.
| | - Toshiyuki Saito
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Janne Kuehner
- Department of Anatomy, University Leipzig, Liebigstr. 13, 04103, Leipzig, Germany
| | - Uta Reibetanz
- Department of Biophysics, University Leipzig, Härtelstr. 16-18, 04107, Leipzig, Germany
| | - Christoph-Eckhard Heyde
- Department of Orthopeadics, Trauma and Plastic Surgery, University Hospital Leipzig, Liebigstr. 20, 04103, Leipzig, Germany
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku-ku, Tokyo, 160-8402, Japan
| | - Anna Voelker
- Department of Orthopeadics, Trauma and Plastic Surgery, University Hospital Leipzig, Liebigstr. 20, 04103, Leipzig, Germany
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Zhong-Lian L, Yakura T, Nagahori K, Kawata S, Omotehara T, Yuki O, Kuramasu M, Itoh M. Effects of cytonuclear estrogen receptor alpha on mitochondrial function and cell cycle endometrial carcinoma cells. J Reprod Immunol 2022. [DOI: 10.1016/j.jri.2022.103719] [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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Nagahori K, Kuramasu M, Omotehara T, Li Z, Ogawa Y, Itoh M. HSPA4L and GIT1 as possible biomarkers in testicular autoimmunity. J Reprod Immunol 2022. [DOI: 10.1016/j.jri.2022.103708] [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: 10/14/2022]
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21
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Omotehara T, Nakata H, Itoh M. Three-dimensional and immunohistochemical analysis of sex steroid receptors in the developing murine mesonephros. J Reprod Immunol 2022. [DOI: 10.1016/j.jri.2022.103718] [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: 10/14/2022]
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22
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Takahashi T, Nagahori K, Kuramasu M, Omotehara T, Li Z, Ogawa Y, Itoh M. Histological analysis of male genitals following intersex bone marrow transplantation. J Reprod Immunol 2022. [DOI: 10.1016/j.jri.2022.103722] [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: 10/14/2022]
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23
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Kanazawa Y, Omotehara T, Nakata H, Hirashima T, Itoh M. Three-dimensional analysis and in vivo imaging for sperm release and transport in the murine seminiferous tubule. Reproduction 2022; 164:9-18. [PMID: 35521906 DOI: 10.1530/rep-21-0400] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 05/03/2022] [Indexed: 11/08/2022]
Abstract
Spermatozoa released from Sertoli cells must be transported to the epididymis. However, the mechanism of the luminal flow in seminiferous tubules has remained unclear to date. Therefore, in this study, we investigated luminal flow and movements in the seminiferous tubules by three-dimensional analysis and in vivo imaging. Serial 5-μm-thick mouse testicular sections at 50-µm-intervals were prepared and stained by Periodic Acid Schiff-hematoxylin. After three-dimensional reconstruction of the seminiferous tubules, the localization of the released spermatozoa and the stages observed in the sections were recorded in each reconstructed tubule. Luminal movements in the seminiferous tubules were observed by in vivo imaging using a fluorescent-reporter mouse and two-photon excitation microscopy system. Spermatozoa without contact to the seminiferous epithelium were not accumulated toward the rete testis. Additionally, such spermatozoa were found on their way not only to the most proximal rete testis but also a more distant rete testis from any stage VIII seminiferous epithelia. In vivo imaging demonstrated that the direction of the flagella of spermatozoa attached to the seminiferous epithelium was repeatedly reversed. The epithelium at the inner curve of the seminiferous tubule was shaken more actively and had fewer spermatozoa attached compared with the epithelium at the outer curve. Our results hence suggest that the luminal flow in the seminiferous tubules is repeatedly reversed and that this physical force helps spermatozoa to be released from Sertoli cells.
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Affiliation(s)
- Yuta Kanazawa
- Y Kanazawa, Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Japan
| | - Takuya Omotehara
- T Omotehara, Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Japan
| | - Hiroki Nakata
- H Nakata, Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, 920-8640, Japan
| | - Tsuyoshi Hirashima
- T Hirashima, The Hakubi Center/ Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Masahiro Itoh
- M Itoh, Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Japan
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Hoshino M, Shinozaki H, Kitahara Y, Kameda T, Hayashi K, Ogawa S, Itoh M, Iwase A. Optimal timing of elective repeat cesarean deliveries of term singleton pregnancies: A multicenter cross-sectional study. Taiwan J Obstet Gynecol 2022; 61:317-322. [PMID: 35361394 DOI: 10.1016/j.tjog.2022.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2020] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Cesarean deliveries must be optimally timed to minimize their effects on mothers and neonates. This study aimed to determine the optimal timing of elective repeat cesarean deliveries to reduce the incidence of neonatal respiratory disorders and of emergent cesarean deliveries. MATERIALS AND METHODS This multi-center, cross-sectional, retrospective analysis evaluated data on the maternal and neonatal outcomes of 856 singleton pregnancies scheduled for elective repeat cesarean deliveries at 37-39 weeks' gestation. The emergent cesarean delivery and neonatal respiratory disorder risks were analyzed according to the scheduled cesarean delivery times. RESULTS The elective cesarean delivery rates were 91.0% during the first and 92.6% during the second half of the 37th week of gestation, 88.7% during the first and 82.9% during the second half of the 38th week of gestation, and 62.5% during the first and 33.3% during the second half of the 39th week of gestation. The neonatal respiratory disorder rates were 21.8% for elective cesarean deliveries during the first half of the 37th week of gestation and approximately 8% for elective cesarean deliveries during the second half of the 37th week until the first half of the 38th week of gestation. No neonatal respiratory disorders occurred among the babies delivered by elective cesarean deliveries during the 39th week of gestation. CONCLUSION For improved maternal and neonatal outcomes in the Asian population, it may be better to perform scheduled elective repeat cesarean deliveries from the second half of the 37th week of gestation until the 38th week of gestation following confirmation of gestational age by early first trimester ultrasonography.
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Affiliation(s)
- Masamichi Hoshino
- Graduate School of Medicine, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8511, Japan; Iwajuku Clinic, 1506-3 Azami, Kasakakemachi, Midori, Gunma, 379-2311, Japan
| | - Hiromitsu Shinozaki
- Graduate School of Health Sciences, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8514, Japan.
| | - Yoshikazu Kitahara
- Graduate School of Medicine, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8511, Japan
| | - Takashi Kameda
- Graduate School of Medicine, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8511, Japan
| | - Kunihiko Hayashi
- Graduate School of Health Sciences, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8514, Japan
| | - Shota Ogawa
- Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Masahiro Itoh
- Japan Community Health Care Organization, Gunma Chuo Hospital, 1 Chome-7-13 Kouncho, Maebashi, Gunma, 371-0025, Japan
| | - Akira Iwase
- Graduate School of Medicine, Gunma University, 3 Chome-39-22 Showamachi, Maebashi, Gunma, 371-8511, Japan
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Nagahori K, Kuramasu M, Kawata S, Yakura T, Li Z, Hirai S, Qu N, Itoh M. GIT1 is an untolerized autoantigen involved in immunologic disturbance of spermatogenesis. Histochem Cell Biol 2022; 157:309-319. [DOI: 10.1007/s00418-021-02061-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2021] [Indexed: 12/14/2022]
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Omotehara T, Nakata H, Nagahori K, Itoh M. Comparative anatomy on the development of sperm transporting pathway between the testis and mesonephros. Histochem Cell Biol 2022; 157:321-332. [PMID: 34988611 DOI: 10.1007/s00418-021-02057-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2021] [Indexed: 11/27/2022]
Abstract
The male genital tract is diverse among vertebrates, but its development remains unclear, especially in the rete region. In this study, we investigated the testis-mesonephros complex of rabbit, chicken, and frog (Xenopus tropicalis) by immunohistochemistry for markers such as Ad4BP/Sf-1 (gonadal somatic and rete cells in mammals) and Pax2 (mesonephric tubules), and performed a three-dimensional reconstruction. In all investigated animals, testis cords were bundled at the mesonephros side. Rete cells positive for Ad4BP/Sf-1 (rabbit) or Pax2 (chicken and frog) were clustered at the border region between the testis and mesonephros. The cluster possessed two types of cords; one connected to the testis cords and the other to the mesonephric tubules. The latter rete cords were contiguous to Bowman's capsules in rabbit and chicken but to nephrostomes in frog. In conclusion, this study showed that mammals, avian species, and frogs commonly develop the bundle between the testis cords (testis canal) and the cluster of rete cells (lateral kidney canal), indicating that these animals share basic morphogenesis in the male genital tract. The connection site between the rete cells and mesonephric tubules is suggested to have changed from the nephrostome to the Bowman's capsule during vertebrate evolution from anamniote to amniote.
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Affiliation(s)
- Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku, Tokyo, 160-8402, Japan.
| | - Hiroki Nakata
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku, Tokyo, 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku, Tokyo, 160-8402, Japan
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Sawada I, Sato I, Kawata S, Nagahori K, Omotehara T, Yakura T, Li ZL, Itoh M. Characteristic expression of CGRP and osteogenic and vasculogenic markers in the proximal and distal regions of the rib during male mouse development. Ann Anat 2021; 240:151883. [PMID: 34915119 DOI: 10.1016/j.aanat.2021.151883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/19/2021] [Accepted: 12/09/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Neuropeptide calcitonin gene-related peptide (CGRP) is a neurotransmitter related to vasculogenesis and osteogenesis during bone formation and organ development. From the foetal period to the postnatal period, the thorax, which is necessary for lung respiration, forms. The thorax exhibits the same cartilage ossification as the bones of the extremities, but a specific system within the thorax exists as costal cartilage after birth. The relationship among CGRP, osteogenesis and vasculogenic markers in the two rib locations during thorax formation is not fully understood. MATERIALS AND METHODS In our study, male mice were used to provide ribs under different development conditions on various embryonic days (E12. 5, E14.5, and E17.5) and postnatal days (P1 and P5). The mRNA expression levels of CGRP, vascular endothelial growth factor (VEGF-A), type 1 collagen (Col1a-1), type 2 collagen (Col2a1), neuropeptide Y (NPY), osteocalcin (OCN) and osteopontin (OPN) were analysed by qRT-PCR. We also analysed the mRNA expression of CGRP, VEGF-A and OPN by in situ hybridization. Multivariate modelling with principal component analysis (PCA) was performed to estimate the interactions among the quantitative real-time RT-PCR data. RESULTS The mRNA expression levels of CGRP, VEGF-A, Col2a, Col1a-1, OCN, and NPY in the male mouse rib gradually increased during development. An antisense probe for CGRP mRNA was strongly detected in the central region of the mouse rib at E12.5 and the hypertrophic and ossification zones at E17.5 by in situ hybridization. VEGF-A was also located in the same region as CGRP at E12.5 and E17.5. OPN was strongly detected at the rib formation stage from E14.5 to E17.5. The expression of CGRP also differed between the proximal and distal regions of the rib at E17.5. As demonstrated by in situ hybridization, CGRP continuously participates in cartilage formation in the distal regions of the rib after birth. The PCA revealed that the mRNA expression of CGRP was related to that of Col1a-1 and VEGF-A during rib formation. CONCLUSION This study shows that CGRP is involved in vascular and bone formation during rib development and may also be involved in cartilage formation after birth. The findings suggest that CGRP may temporarily participate in bone formation and continuously participate in cartilage formation in the rib, which may also be related to the formation of the anterior thoracic wall after birth.
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Affiliation(s)
- Iori Sawada
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan.
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
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Yoshimura S, Yamamoto K, Fujimura S, Kawata S, Shimada K, Omotehara T, Itoh M. A case of double inferior vena cava with the connection to sacral venous plexus. Anat Sci Int 2021; 97:143-146. [PMID: 34797514 DOI: 10.1007/s12565-021-00640-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/06/2021] [Indexed: 11/28/2022]
Abstract
Double inferior vena cava (IVC) is known as a variation in which the additional IVC is found on the left side of the abdominal aorta. Their developmental process has been well documented, but the venous development around the lumbosacral region is controversial. In the present double IVC case, the left IVC entered the left renal vein at the L2 level, and the renal veins on each side flowed into the right IVC at the L1 level. The internal and external iliac veins were merged at the S1 level on each side. Besides, a venous communication (3-mm-width) was found horizontally between the internal iliac veins near their origin at the S1 level. It had also an extra narrow branch (1-mm-width), which ran obliquely upward and reached the left IVC at the level of L5. The median sacral artery (MSA) ran at the ventral side of the horizontal communication but at the dorsal side of its extra oblique branch. These results suggest that the oblique branch is a remnant of the anastomosis between the right and left posterior cardinal veins. Furthermore, the horizontal vein corresponds to the sacral venous plexus, suggesting that the anastomosis can be formed between the IVC and sacral venous plexus.
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Affiliation(s)
- Shiori Yoshimura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Kentaro Yamamoto
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Shintaro Fujimura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Kazuyuki Shimada
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan.
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
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Li ZL, Yakura T, Nagahori K, Kawata S, Omotehara T, Ogawa Y, Itoh M. Effects of cytonuclear estrogen receptor alpha on proliferation, cell-size and migration of endometrial carcinoma cells. J Reprod Immunol 2021. [DOI: 10.1016/j.jri.2021.103409] [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: 11/24/2022]
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Nutahara D, Nagai K, Sofuni A, Tsuchiya T, Ishii K, Furuichi Y, Kitamura K, Itoh M, Miyazawa H, Itoi T. Morphological study of the gastrointestinal tract around the ligament of Treitz using upper gastrointestinal radiography: Fundamental data for EUS-guided gastrojejunostomy. J Hepatobiliary Pancreat Sci 2021; 28:1023-1029. [PMID: 34181825 DOI: 10.1002/jhbp.1018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND/PURPOSE We developed EUS-guided double-balloon occluded gastrojejunostomy (EPASS) for gastric drainage tract obstruction. The success of EPASS depends on the proximity of the stomach and the gastrointestinal (GI) tract near the ligament of Treitz. The aim of this study is to clarify the GI anatomy near the ligament of Treitz. METHODS One thousand and sixteen cases imaged upper GI radiography using barium were retrospectively evaluated. Morphologically, the GI tract running near the ligament of Treitz was divided in three types: Type I: The 4th portion of the duodenum (D4) approaches the stomach; Type II: D4 does not approach the stomach; Type III: D4 forms a loop to the jejunum. The minimum distance between the stomach and the GI tract near the ligament of Treitz was measured. RESULTS Based on the morphological classification, 74.6% in the study group was classified in Type I, 22.0% in Type II, and 3.3% in Type III, respectively. The median minimum distance in Type II/III group were significantly longer, compared with the Type I (P < .01). CONCLUSIONS The GI anatomy near the ligament of Treitz was clarified using upper GI radiography. It is divided into three patterns, and one-fourth of cases may have difficulty in EUS-guided gastrojejunostomy.
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Affiliation(s)
- Daisuke Nutahara
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
- Department of Gastroenterology and Hepatology, Hachioji Medical Center, Tokyo Medical University, Shinjuku-ku, Japan
| | - Kazumasa Nagai
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
- Department of Gastroenterology and Hepatology, Hachioji Medical Center, Tokyo Medical University, Shinjuku-ku, Japan
| | - Atsushi Sofuni
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
| | - Takayoshi Tsuchiya
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
| | - Kentaro Ishii
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
| | - Yoshihiro Furuichi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
| | - Katsuya Kitamura
- Department of Gastroenterology and Hepatology, Hachioji Medical Center, Tokyo Medical University, Shinjuku-ku, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Japan
| | - Hideaki Miyazawa
- Department of Gastroenterology, Tokyo Kamata Medical Center, Ota-ku, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, Shinjuku-ku, Japan
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Omotehara T, Kanazawa Y, Nakata H, Hirashima T, Itoh M. Three-dimensional analysis for flowing spermatozoa in mouse seminiferous tubules. J Reprod Immunol 2021. [DOI: 10.1016/j.jri.2021.103412] [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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32
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Nagahori K, Kuramasu M, Hirai S, Omotehara T, Li Z, Ogawa Y, Itoh M. Experimental autoimmune orchitis induced by immunization with GIT1 in mice. J Reprod Immunol 2021. [DOI: 10.1016/j.jri.2021.103414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Omotehara T, Nakata H, Itoh M. Three-dimensional analysis of mesonephric tubules remodeling into efferent tubules in the male mouse embryo. Dev Dyn 2021; 251:513-524. [PMID: 34378268 DOI: 10.1002/dvdy.410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/06/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Spermatozoa are transported to the epididymal duct through efferent tubules. Although the origin of the efferent tubules is thought to be mesonephric tubules (MTs), their detailed developmental process, for example, where the rete testis and efferent tubules are connected, is unclear. We investigated the structural changes of the MTs in the male mouse embryo using a three-dimensional reconstruction method. RESULTS Three to six MTs were connected to the Wolffian duct, and some of them branched, resulting in five to nine tips. Rete cells contacted the three to six tips. The MTs showed a folded shape when the gonadal fate was determined. After the testis development started, they became short and straight but emerged as long and twisting by birth. Before birth, the efferent duct was composed of MTs and a cranial portion of the folded Wolffian duct. CONCLUSIONS The contact between the rete testis and efferent tubules is possibly established at the tip of each MT. The MTs regress after gonadal fate is determined but is remodeled to the twisting efferent tubules by birth. The efferent tubules are composed of the MTs but also a cranial portion of the folded Wolffian duct in the mouse.
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Affiliation(s)
| | - Hiroki Nakata
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Nakata H, Omotehara T, Itoh M, Iseki S, Mizokami A. Three-dimensional structure of testis cords in mice and rats. Andrology 2021; 9:1911-1922. [PMID: 34128333 DOI: 10.1111/andr.13069] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/01/2021] [Accepted: 06/11/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Testis cord elongation and coiling, which occur in the final stage of testis formation, have been attributed to Sertoli cell proliferation; however, the underlying mechanisms remain unclear. OBJECTIVE The aim of the present study was to clarify the precise three-dimensional structure of testis cords in the final stage of testis formation in mice and rats. MATERIALS AND METHODS We reconstructed whole testis cords in the final stage of testis formation in mice (on embryonic days 15.5 and 18.5) and rats (on embryonic days 16.5 and 19.5) using serial paraffin sections and high-performance three-dimensional reconstruction software. RESULTS Detailed morphometric parameters were calculated for three-dimensionally reconstructed testis cords in six mouse and rat testes each. The mean numbers of testis cords in mice and rats were 12.7 and 27.8, respectively. The mean number of branching points per testis cord was 1.52 in mice, whereas it was only 0.30 in rats. In contrast, the mean ratio of the inner cords, that is, cords not in contact with the tunica albuginea, was 23.0% in rats, whereas it was only 6.5% in mice. In both species, the cords on the cranial side coiled more strongly than those on the caudal side, consistent with the greater expansion of the testis volume on the caudal side. All cords formed right-handed helices from the rete testis side. DISCUSSION AND CONCLUSIONS The present results suggest that testis cords undergo anastomosis at a higher frequency in mice than in rats and that the coiling of testis cords proceeds from the cranial to caudal side of the testis in both species.
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Affiliation(s)
- Hiroki Nakata
- Department of Histology and Cell Biology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | | | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Shoichi Iseki
- Department of Clinical Engineering, Faculty of Health Sciences, Komatsu University, Komatsu, Japan
| | - Atsushi Mizokami
- Department of Integrative Cancer Therapy and Urology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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Asaumi R, Kawai T, Kawata S, Omotehara T, Kondo S, Itoh M. Morphological Observations of the Bony Canal Structure of the Eustachian Tube in Elderly Human Cadavers With Cone-Beam Computed Tomography and Principal Component Analysis. J Int Adv Otol 2021; 17:134-144. [PMID: 33893783 PMCID: PMC9476290 DOI: 10.5152/jiao.2021.0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective: Anatomical information regarding the eustachian tube (ET) is limited; therefore, more detailed analytical data on ET structure is needed when planning surgical treatments involving the temporal bone. Methods: We examined the bony structure of the middle ear and ET in 30 Japanese donor cadavers (71-97 years old at the time of death) both macroscopically and with cone-beam computed tomography. Each ET was reconstructed in 3 dimensions, and the structure and correlations of ET element measurements, identified via principal component analysis, were analyzed. Results: Delineation between bony and cartilaginous zones appeared unclear, and the space between ET cartilage and the carotid canal was narrow. We observed stenosis of the ET bony canal in 43.3% of the specimens (n = 30). In 50% of the specimens, the position of the ET bony canal was depressed at the pharyngeal orifice of the auditory side of the tube, and the middle region was a roundish structure. The lateral and central regions of the bony canal were related to the ET bony canal structure. Conclusion: The close proximity of the ET bony canal to the carotid canal is an important anatomical and morphological finding. Pre-surgical 3D modeling of the middle ear structure, or at a minimum, of the central region of the middle ear canal, may provide useful information for planning procedures that involve the ET.
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Affiliation(s)
- Rieko Asaumi
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Chiyoda-ku, Tokyo, Japan
| | - Taisuke Kawai
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Chiyoda-ku, Tokyo, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Shintaro Kondo
- Department of Anatomy, School of Dentistry at Matsudo, Nihon University, Matsudo, Chiba, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
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Saimi M, Moriya S, Li ZL, Miyaso H, Nagahori K, Kawata S, Omotehara T, Ogawa Y, Hino H, Miyazawa K, Sakabe K, Itoh M. Cytonuclear Estrogen Receptor Alpha Regulates Proliferation and Migration of Endometrial Carcinoma Cells. Tokai J Exp Clin Med 2021; 46:7-16. [PMID: 33835469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVE The effects of estrogen on cells are mediated by the estrogen receptor α (ERα) which localizes at the peri-membrane, cytoplasm, and the nucleus of cells. Therefore, we intended to investigate how cytonuclear ERα plays its roles in different cellular activities. METHODS We used amino acid substituted ERα that localized at the cytoplasm and nucleus but has no direct DNA-binding activities. ERα-negative endometrial carcinoma cells (ERα-) were stably transfected with plasmid of human ERα carrying a substituted phenylalanine at position 445 with alanine (ERα-F445A). Treated with 17β-estrogen (E2) or bazedoxifene (BDF), cell proliferation, migration, and expression of kinases related to ERα signal transduction pathways were observed. RESULTS E2 (40 nM) significantly activated proliferation in ERα-F445A cells, but not in ERα- cells. Similarly, E2 significantly activated cell migration in ERα-F445A cells, rather than that in ERα- cells. While no obvious change in the amount of the non-phosphorylated mammalian target of Rapamycin (mTOR), the expression of mTOR phosphorylated at serine 2448 decreased, which was recovered in presence of 17β-estrogen (E2) in the ERα-F445A cells. On the other hand, the expression of focal adhesion kinase (FAK) phosphorylated at tyrosine at 297 was attenuated in the ERα-F445A cells treated with E2. CONCLUSION It is suggested that the cytonuclear ERα-F445A induces phosphorylation of kinases in downstream pathways, which regulate cell proliferation and migration.
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Affiliation(s)
| | | | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan.
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Miyaso H, Takano K, Nagahori K, Kawata S, Li ZL, Kuramasu M, Wu X, Ogawa Y, Itoh M. Neonatal maternal separation increases the number of p27-positive Sertoli cells in prepuberty. Reprod Toxicol 2021; 102:56-66. [PMID: 33845160 DOI: 10.1016/j.reprotox.2021.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/03/2021] [Accepted: 03/24/2021] [Indexed: 10/21/2022]
Abstract
Neonatal maternal separation (NMS) is an experimental model for early life stress, which affects the growth and development of various organs, resulting in adverse health effects in humans and animals. In our previous study, we demonstrated that NMS [(0.5-, 1-, 2-h/day NMS, from postnatal day (PND) 1-10] induced morphological changes to the male reproductive system, including decreased Sertoli cell numbers in mouse testes at PND 70. To clarify the mechanism by which NMS decreases Sertoli cell numbers, we evaluated the effects of NMS on mouse testes at PNDs 10 and 16. At PND 10, the Sertoli cell number was not significantly different among experimental groups; however, it decreased in 0.5- and 2-h/day NMS mice at PND 16. The termination of Sertoli cell proliferation in prepuberty can be induced by p27, a cyclin-dependent kinase inhibitor. At PND 10, we observed an increase in the number of p27-positive Sertoli cells in 2-h/day NMS mice. The seminiferous tubule diameters decreased significantly in 1- and 2-h/day NMS mice, and the relative interstitial area increased in 2-h/day NMS mice. Serum corticosterone level significantly increased, and serum testosterone level significantly decreased in the 2-h/day NMS mice. At PND 16, the tubule diameters and height of seminiferous epithelium were significantly higher in 0.5- and 2-h/day NMS mice. Our results suggest that NMS disturbs serum corticosterone and testosterone levels and increases the number of p27-positive Sertoli cells at PND 10, resulting in a decrease in the number of Sertoli cells at PND 16.
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Affiliation(s)
- Hidenobu Miyaso
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan.
| | - Kaiya Takano
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Xi Wu
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Yuki Ogawa
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
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Nagahori K, Hirai S, Hatayama N, Kuramasu M, Omotehara T, Kawata S, Li Z, Miyaso H, Ogawa Y, Qu N, Terayama H, Hayashi S, Yi SQ, Naito M, Itoh M. Heat shock protein A4L is a potent autoantigen for testicular autoimmunity in mice. J Reprod Immunol 2021; 145:103318. [PMID: 33894646 DOI: 10.1016/j.jri.2021.103318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/19/2021] [Accepted: 03/24/2021] [Indexed: 01/12/2023]
Abstract
Experimental autoimmune orchitis (EAO) may be used as a model to investigate immunological infertility in men. Murine EAO is induced via immunization with auto-immunogenic antigens (AIAgs) from testicular germ cells (TGCs). CD4 + T cells play a crucial role in EAO induction. However, whether AIAgs induce an immune response remains unclear. We aimed to identify self-antigens that induce EAO by screening a phage display library of random TGC peptides using IgG from EAO-induced A/J mice. Twenty TGC-specific AIAgs were detected, and G protein-coupled receptor kinase 2 interacting protein-1 (GIT1) and heat shock protein A4L (HSPA4L) were identified as candidate AIAgs that induce EAO. Immunization with GIT1 or HSPA4L, emulsified in complete Freund's adjuvant, resulted in 66 % or 100 % incidence of EAO, respectively, indicating that HSPA4L is a most potent AIAg that induces EAO in mice. These findings may expectedly help improve the diagnostic procedures and treatment of immunological infertility in men.
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Affiliation(s)
- Kenta Nagahori
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Shuichi Hirai
- Department of Anatomy, School of Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
| | - Naoyuki Hatayama
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan; Department of Anatomy, School of Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
| | - Miyuki Kuramasu
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Takuya Omotehara
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Shinichi Kawata
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Zhonglian Li
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Hidenobu Miyaso
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Yuki Ogawa
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
| | - Ning Qu
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan; Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, Japan.
| | - Hayato Terayama
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan; Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, Japan.
| | - Shogo Hayashi
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, Japan.
| | - Shuang-Qin Yi
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan; Department of Frontier Health Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-ku, Tokyo, 116-8551, Japan.
| | - Munekazu Naito
- Department of Anatomy, School of Medicine, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
| | - Masahiro Itoh
- Department of Anatomy, School of Medicine, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Japan.
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Matsuda H, Sato I, Asaumi R, Omotehara T, Kawata S, Nagahori K, Li ZL, Itoh M. Comparison of CGRP distributions in the maxillary sinus and trigeminal ganglion between elderly dentulous and edentulous humans. Eur J Histochem 2021; 65. [PMID: 33787056 PMCID: PMC8054570 DOI: 10.4081/ejh.2021.3234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 03/24/2021] [Indexed: 11/22/2022] Open
Abstract
Thickening of the Schneiderian membrane (SM, mucosa of the maxillary sinus) appears in the paranasal sinus. Information on SM thickening is available for patients receiving sinus lift treatments, which is a risk factor for SM excretory dysfunction. However, more information is needed on the structure of the SM and the relationship between the maxilla sinus and palatine with the alveolar bone and the SM for dental implant treatment in the human maxilla. One hundred twenty-six sides of the maxilla from 71 cadavers were subjected to cone-beam computed tomography analysis and macroscopic and immunohistochemical observations in this study. A thickened SM was mainly observed in the middle region of the basal layer of the maxillary sinus (MS). Strong calcitonin gene-related peptide (CGRP)-positive reactions were observed in the alveolar bone, oral mucosa, mucosa of the MS, and trigeminal ganglion (TG) cells in dentulous samples compared with edentulous samples. TG cells play important roles in delivering CGRP through axons to the mucosal gland and in regulating the maxilla-related thickening of the SM. These data could help determine CGRP functions in the mucosal gland and bone formation between dentulous and edentulous samples and indicate that CGRP may pass from the TG to the MS glands.
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Affiliation(s)
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical Univsersity.
| | - Rieko Asaumi
- Department of Oral and Maxillofacial Radiology, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo.
| | | | | | | | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, Tokyo.
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo.
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40
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Aramaki Y, Kakizaki F, Kawata S, Omotehara T, Itoh M. Effects of the posterior pelvic tilt sitting posture on thoracic morphology and respiratory function. J Phys Ther Sci 2021; 33:118-124. [PMID: 33642685 PMCID: PMC7897525 DOI: 10.1589/jpts.33.118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/02/2020] [Indexed: 11/24/2022] Open
Abstract
[Purpose] We investigated how differences in pelvic angle in the posterior pelvic tilt sitting posture simultaneously affect the thoracic morphology and the respiratory function. [Participants and Methods] The participants were 18 healthy young males. We positioned the pelvis at 0°, 10°, 20°, and 30° of posterior tilt, following which the thoracic expansion volume ratio, thoracic spine tilt angle, and respiratory function were measured. We calculated the thoracic volume and thoracic spine tilt angle by measuring the amount of displacement of reflective markers attached to the thoracic area using the Vicon MX 3D-analysis system. Respiratory function was measured by spirometry. [Results] The expansion volume ratio decreased significantly in response to 10-30° posterior pelvic tilt sitting at the mid-thorax and 30° posterior pelvic tilt sitting at the lowest thorax. The upper thoracic spine level showed a change in anterior tilt at 10-30° posterior pelvic tilt sitting, whereas the lower thoracic spine level showed a change in posterior tilt at 30° posterior pelvic tilt sitting. Respiratory function was significantly lower at 30° posterior pelvic tilt sitting than at 0° posterior pelvic tilt sitting. A positive correlation between thoracic expansion volume ratio and respiratory function was found at 30° posterior pelvic tilt sitting. [Conclusion] Changes in thoracic spine tilt angle due to posterior pelvic tilt sitting may restrict the expansion of thoracic motion during respiration, thereby affecting respiratory function.
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Affiliation(s)
- Yoshihiro Aramaki
- Department of Anatomy, Tokyo Medical University, Japan.,Department of Rehabilitation, Sendai Seiyo Gakuin College, Japan
| | - Fujiyasu Kakizaki
- Graduate School of Health Care Sciences, Bunkyo Gakuin University: 1196 Kamekubo, Fujimino, Saitama 356-8533, Japan
| | | | | | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Japan
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41
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Chihara M, Asahina A, Itoh M. Corrigendum: A novel mutation in the KCNJ8 gene encoding the Kir6.1 subunit of an ATP-sensitive potassium channel in a Japanese patient with Cantú syndrome. J Eur Acad Dermatol Venereol 2021; 35:263. [PMID: 33617015 DOI: 10.1111/jdv.17015] [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: 11/30/2022]
Affiliation(s)
- M Chihara
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - A Asahina
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - M Itoh
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan.,Dermatology Clinic Itoiin, Shizuoka, Japan
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42
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Koga S, Sato I, Li Z, Miyaso H, Kawata S, Itoh M. Analysis of the mylohyoid nerve in elderly Japanese cadavers for dental implant surgery. Clin Exp Dent Res 2021; 7:20-32. [PMID: 33230980 PMCID: PMC7853905 DOI: 10.1002/cre2.341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/22/2020] [Accepted: 09/27/2020] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES Injury to the mandibular nerve (MN) branches may cause pain and irregular occlusal movement during mastication after mandibular dental treatments. Growing evidence indicates that the calcitonin gene-related peptide (CGRP) plays a key role in the development of peripheral sensitization and the associated enhanced pain, suggesting it may be a sign to ensure a safe and reliable dental implant treatment. Our focus was on the distribution of the MN branches and their communication with the lingual nerve (LN), the localized expression of CGRP, and the identification of a pain area related to the mylohyoid muscle (MM) fascia in the mandibular floor. MATERIAL AND METHODS In this study, MM samples from 440 sides of 303 human cadavers aged 61-103 years were examined microscopically and immunohistochemically. These data were further evaluated by the use of principal component analysis. RESULTS A complex but weak attachment site was identified for the fascia of the MM. CGRP expression was mainly located in small vessels and was scattered throughout the whole fascia of the MM. Communication between the MN and LN was found in 62.5% (275/440) of the samples. The results from the principal component analysis showed that the positive contributions were from the descending branch in the premolar region (correlation coefficient value R = 0.665), the ascending branch in the molar region (R = 0.709) and the intermediate branch of the digastric branch (R = 0.720) in component 1. In the fascia off the MM, strongly labeled CGRP-positive cells were also found around the blood vessels and the nerve. CONCLUSIONS The findings reported in this study indicate that there is a risk of damage when pulling the fascia off the MM at the border of the molar and premolar regions during dental implant surgery.
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Affiliation(s)
- Shintaro Koga
- Department of AnatomyTokyo Medical UniversityTokyoJapan
| | - Iwao Sato
- Department of AnatomyTokyo Medical UniversityTokyoJapan
| | - Zhong‐Lian Li
- Department of AnatomyTokyo Medical UniversityTokyoJapan
| | | | | | - Masahiro Itoh
- Department of AnatomyTokyo Medical UniversityTokyoJapan
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Omotehara T, Naito M, Hayashi S, Kawata S, Shimada K, Itoh M. Common hepatic artery originating from superior mesenteric artery with replaced right hepatic artery. Anat Sci Int 2021; 96:568-571. [PMID: 33420976 DOI: 10.1007/s12565-020-00599-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/26/2020] [Indexed: 10/22/2022]
Abstract
We found a variational case relating to the arteries distributed to the liver and pancreas during the routine cadaver dissection course. The common hepatic artery originated from the superior mesenteric artery as the first branch. The common hepatic artery was soon divided into the left and right hepatic arteries and distributed to the left and right lobe of the liver. The superior pancreaticoduodenal artery arose from the gastroduodenal artery, a branch of the left hepatic artery. The inferior pancreaticoduodenal artery originated from the superior mesenteric artery. Besides, two posterior branches of the right hepatic artery supplied the duodenum and the head of the pancreas. The arterial arcades were formed behind the head of the pancreas among the superior pancreaticoduodenal artery and these two posterior branches of the right hepatic artery. In conclusion, this case can be considered a rare case in which the replaced common hepatic artery and replaced right hepatic artery occurred simultaneously. The coexisting of these two replaced arteries suggests that the developmental processes to form these variations are independent.
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Affiliation(s)
- Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan.
| | - Michiko Naito
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Shogo Hayashi
- Division of Basic Medical Science, Department of Anatomy, Tokai University School of Medicine, 143, Shimokasuya, Isehara-shi, 259-1193, Kanagawa, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
| | - Kazuyuki Shimada
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan.,Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-Ku, Tokyo, 173-8610, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-Ku, Tokyo, 160-8402, Japan
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Abstract
It is difficult to correlate the direction of mandibular canal branches (MCBs) with altered sensation in dental treatments. In contrast, calcitonin gene-related peptide (CGRP) is related to vasodilation, bone formation, and the interaction with the peripheral nervous system. Therefore, we investigated the detailed morphological characteristics of MCBs using cone-beam computed tomography (CBCT) and observation of the CGRP distribution around the MCB. The MCB measurements were evaluated using principal component analysis (PCA) to identify morphological correlations. A total of 168 sides of mandibles from 84 cadavers were analyzed in this study. Most of the MCBs were primarily in the direction of the clock model from X to XI in sagittal sections and XII to I in coronal sections of the mandible. The structure of the MCB was divided into the fine canal branch (60.4%, 223/369), partial branch (24.4%, 90/369), and no canal branch (15.2%, 56/369). PCA indicated that the measurement element with the MCB and its structures were correlated in contrast to tooth factors. Positive CGRP reactions were clearly observed in the no-canal branch group compared to other groups. These data provide useful suggestions for MCB dynamics and information for clinical dental treatment.
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Affiliation(s)
- M Takiguchi
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - I Sato
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Z L Li
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - H Miyaso
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - S Kawata
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - M Itoh
- Department of Anatomy, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
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45
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Miyaso H, Nagahori K, Takano K, Omotehara T, Kawata S, Li ZL, Kuramasu M, Wu X, Ogawa Y, Itoh M. Neonatal maternal separation causes decreased numbers of sertoli cell, spermatogenic cells, and sperm in mice. Toxicol Mech Methods 2020; 31:116-125. [PMID: 33100103 DOI: 10.1080/15376516.2020.1841865] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neonatal maternal separation is an experimental model used to evaluate the effects of toxic stress in neonates, or early life stress. Although various physiological and psychological stresses during childhood have been reported, the effects of neonatal maternal separation on the male reproductive system remain unclear. Therefore, the present study evaluated the effects of neonatal maternal separation on the male reproductive system. In neonatal male ICR mice, maternal separation was performed for 0.5, 1, 2, and 4 hours/day, from postnatal day 1 to 10. At 10 weeks of age, the neonatal maternal separation mice exhibited decreases in both testicular weight and epididymal sperm number, along with various testicular morphological changes involving germ cells, Sertoli cells, and interstitial cells. Notably, neonatal maternal separation mice showed decreased numbers of Sertoli cells. Animals subjected to 0.5-, 1-, and 2-h/day neonatal maternal separation exhibited decreases in serum levels of testosterone but not in those of gonadotropin (luteinizing hormone and follicle-stimulating hormone). Together, these data showed that neonatal maternal separation in male mice causes decreased Sertoli cell numbers following puberty, resulting in subsequent decreased spermatogenic activity.
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Affiliation(s)
- Hidenobu Miyaso
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Kaiya Takano
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | | | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Xi Wu
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Yuki Ogawa
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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Nishi S, Hayashi S, Omotehara T, Kawata S, Suematsu Y, Itoh M. Pelvic collateral pathway during endovascular aortoiliac aneurysm repair with internal iliac artery interruption: a retrospective observational study. BMC Cardiovasc Disord 2020; 20:480. [PMID: 33176687 PMCID: PMC7659198 DOI: 10.1186/s12872-020-01764-y] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 10/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ipsilateral branches of the deep femoral artery (DFA) are qualitatively identified as collateral arteries based on angiography after internal iliac artery (IIA) interruption. The purpose of this study was to quantitatively identify the major collateral pathway after unilateral IIA interruption during endovascular aortoiliac aneurysm repair to preserve the pelvic circulation and reduce the risk of ischemic complications. METHODS The study population included 28 patients (mean age 76.3 years) with aortoiliac aneurysm who underwent endovascular aneurysm repair with unilateral IIA interruption from August 2012 to January 2020. The diameters of the bilateral preoperative and postoperative DFA, lateral femoral circumflex artery (LFCA), medial femoral circumflex artery (MFCA) and obturator artery (ObA) were measured on contrast-enhanced computed tomography using a 3-dimensional image analysis system. The measured values were evaluated and analyzed with a repeated measures two-way analysis of variance and Dunnett's test. RESULTS The postoperative diameters of the MFCA (P = 0.051) and ObA (P = 0.016) were observed to be larger than the preoperative diameters. Such increases in the MFCA (P < 0.001) and ObA (P < 0.001) diameters were only found to be significant on the unilateral side of the IIA interruption, and the diameter of the ipsilateral LFCA (P < 0.001) was also found to have significantly increased in size. However, no significant arterial extension was found on the contralateral side. CONCLUSIONS The ipsilateral MFCA-ObA pathway might therefore be a major collateral pathway arising from the DFA to preserve pelvic circulation after unilateral IIA interruption.
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Affiliation(s)
- Satoshi Nishi
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, Japan. .,Department of Cardiovascular Surgery, Tsukuba Memorial Hospital, 1187-299, Kaname, Tsukuba, Ibaraki, Japan.
| | - Shogo Hayashi
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, 143, Shimokasuya, Isehara, Kanagawa, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, Japan
| | - Yoshihiro Suematsu
- Department of Cardiovascular Surgery, Tsukuba Memorial Hospital, 1187-299, Kaname, Tsukuba, Ibaraki, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo, Japan
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Nagahori K, Hirai S, Kuramasu M, Omotehara T, Kawata S, Ogawa Y, Miyaso H, Li Z, Itoh M. Experimental autoimmune orchitis induced by immunization with HSP in mice. J Reprod Immunol 2020. [DOI: 10.1016/j.jri.2020.103229] [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: 10/22/2022]
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Qu N, Nagahori K, Kuramasu M, Ogawa Y, Suyama K, Hayashi S, Sakabe K, Itoh M. Effect of Gosha-Jinki-Gan on Levels of Specific mRNA Transcripts in Mouse Testes after Busulfan Treatment. Biomedicines 2020; 8:biomedicines8100432. [PMID: 33086656 PMCID: PMC7603379 DOI: 10.3390/biomedicines8100432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/17/2020] [Indexed: 11/16/2022] Open
Abstract
With the increase in survival rates of cancer patients in recent years, infertility caused by anticancer treatments has become a significant concern for cancer survivors. Some studies have suggested that Sertoli cells play a key role in mediating testicular immunology in busulfan-induced aspermatogenesis. We recently demonstrated that Gosha-jinki-gan (TJ107), a traditional Japanese medicine, can completely recover injured spermatogenesis in mice 60 days after busulfan injection. In the present study, we sought to examine the levels of mRNA transcripts encoding markers of 25 Sertoli cell-specific products and 10 markers of germ cell differentiation. Our results demonstrated that only supplementation of TJ107 at day 60 after busulfan injection could significantly recover the increase in five mRNA species (Amh, Clu, Shbg, Testin, and Il1a) and the decrease in four mRNA species (Aqp8, CST9, Wnt5a, and Tjp1) in response to Busulfan (BSF) at day 120, with the increase of all examined spermatogenic markers.
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Affiliation(s)
- Ning Qu
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, Kanagawa 259-1193, Japan; (K.S.); (S.H.); (K.S.)
- Department of Anatomy, Tokyo Medical University, Tokyo 160-8402, Japan; (K.N.); (M.K.); (Y.O.); (M.I.)
- Correspondence: or ; Tel.: +81-4-6393-1121; Fax: +81-4-6393-1517
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, Tokyo 160-8402, Japan; (K.N.); (M.K.); (Y.O.); (M.I.)
| | - Miyuki Kuramasu
- Department of Anatomy, Tokyo Medical University, Tokyo 160-8402, Japan; (K.N.); (M.K.); (Y.O.); (M.I.)
| | - Yuki Ogawa
- Department of Anatomy, Tokyo Medical University, Tokyo 160-8402, Japan; (K.N.); (M.K.); (Y.O.); (M.I.)
| | - Kaori Suyama
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, Kanagawa 259-1193, Japan; (K.S.); (S.H.); (K.S.)
| | - Shogo Hayashi
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, Kanagawa 259-1193, Japan; (K.S.); (S.H.); (K.S.)
| | - Kou Sakabe
- Department of Anatomy, Division of Basic Medical Science, Tokai University School of Medicine, Kanagawa 259-1193, Japan; (K.S.); (S.H.); (K.S.)
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo 160-8402, Japan; (K.N.); (M.K.); (Y.O.); (M.I.)
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Chihara M, Asahina A, Itoh M. A novel mutation in the KCNJ8 gene encoding the Kir6.1 subunit of an ATP-sensitive potassium channel in a Japanese patient with Cantú syndrome. J Eur Acad Dermatol Venereol 2020; 34:e476-e478. [PMID: 32215968 DOI: 10.1111/jdv.16384] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 03/16/2020] [Indexed: 11/27/2022]
Affiliation(s)
- M Chihara
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - A Asahina
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - M Itoh
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan.,Dermatology Clinic Itoiin, Shizuoka, Japan
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Watanabe M, Yoneyama Y, Hamada H, Kohno M, Hasegawa O, Takahashi H, Kawase-Koga Y, Matsuo A, Chikazu D, Kawata S, Itoh M. The Usefulness of Saturated Salt Solution Embalming Method for Oral Surgical Skills Training: A New Cadaveric Training Model for Bone Harvesting. Anat Sci Educ 2020; 13:628-635. [PMID: 31608585 DOI: 10.1002/ase.1925] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 07/24/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
The purpose of this study was to assess the usefulness of saturated salt solution-embalmed cadavers for oral surgical skills training related to bone graft harvesting. Two half-day surgical skills training workshops were held at the Tokyo Medical University utilizing eight cadavers embalmed with the saturated salt solution. A total of 22 participants including oral surgeons, residents, and dentists attended the workshop. Surgical training consisted of six procedures related to intraoral and extraoral bone harvesting. The participants were surveyed to assess self-confidence levels for each surgical procedure before and after completion of each workshop. The Wilcoxon signed-rank test was used to compare the differences between each median score before and after the workshop. There were statistically significant increases in the self-assessed confidence scores in bone harvesting procedures for the zygomatic bone (P = 0.003), maxillary tuberosity (P = 0.002), and other sites (P < 0.001). The anatomical features of saturated salt solution-embalmed cadavers were also examined. The textures of the oral mucosa and skin were similar to those of living individuals. The structure of bone tissues was well-preserved and the hardness was realistic. Consequently, all procedures were performed with sufficient realism. The saturated salt solution method has a relatively low cost of preparation and storage, and almost no odor. The authors suggest that saturated salt solution-embalmed cadavers could provide a new model for oral surgical skills training in bone harvesting.
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Affiliation(s)
- Masato Watanabe
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Yuya Yoneyama
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Hayato Hamada
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - Michihide Kohno
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - On Hasegawa
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Hidetoshi Takahashi
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Yoko Kawase-Koga
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Akira Matsuo
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | - Daichi Chikazu
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University Hospital, Tokyo, Japan
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, Tokyo, Japan
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