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Nagata I, Kawashima M, Miyazaki A, Miyoshi M, Sakuraya T, Sonomura T, Oyanagi E, Yano H, Arakawa T. Icing after skeletal muscle injury with necrosis in a small fraction of myofibers limits iNOS-expressing macrophage invasion and facilitates muscle regeneration. Am J Physiol Regul Integr Comp Physiol 2023; 324:R574-R588. [PMID: 36878487 DOI: 10.1152/ajpregu.00258.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Growing evidence from animal experiments suggests that icing after skeletal muscle injury is harmful to muscle regeneration. However, these previous experimental models yielded massive necrotic myofibers, whereas muscle injury with necrosis in a small myofiber fraction (<10%) frequently occurs in human sports activities. Although macrophages play a pro-reparative role during muscle regeneration, they exert a cytotoxic effect on muscle cells through an inducible nitric oxide synthase (iNOS)-mediated mechanism. In this study, we established an animal injury model with necrosis limited to a small myofiber fraction and investigated the effect of icing on muscle regeneration with a focus on macrophage-related events. Icing after muscle injury of this model resulted in an enlarged size of regenerating myofibers compared with those in untreated animals. During the regenerative process, icing attenuated the accumulation of iNOS-expressing macrophages, suppressed iNOS expression in the whole damaged muscle, and limited the expansion of the injured myofiber area. Additionally, icing increased the ratio of M2 macrophages within the injured site at an earlier time point than that in untreated animals. Following these phenomena in icing-treated muscle regeneration, an early accumulation of activated satellite cells within the damaged/regenerating area was occurred. The expression level of myogenic regulatory factors, such as MyoD and myogenin, was not affected by icing. Taken together, our results suggest that icing after muscle injury with necrosis limited to a small fraction of myofibers facilitates muscle regeneration by attenuating iNOS-expressing macrophage invasion, limiting muscle damage expansion, and accelerating the accumulation of myogenic cells which form regenerating myofibers.
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Affiliation(s)
- Itsuki Nagata
- Department of Rehabilitation Sciences, Kobe University, Kobe, Japan
| | - Masato Kawashima
- Department of Rehabilitation Sciences, Kobe University, Kobe, Japan.,Department of Health and Sports Science, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Anna Miyazaki
- Department of Rehabilitation Sciences, Kobe University, Kobe, Japan
| | | | - Tohma Sakuraya
- Department of Rehabilitation Sciences, Kobe University, Kobe, Japan.,Department of Oral Anatomy, Asahi University, Gifu, Japan
| | | | - Eri Oyanagi
- Department of Health and Sports Science, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Hiromi Yano
- Department of Health and Sports Science, Kawasaki University of Medical Welfare, Kurashiki, Japan.,Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan
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2
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Sakuraya T, Sekiya SI, Emura K, Sonomura T, Hirasaki E, Arakawa T. Comparison of the soleus and plantaris muscles in humans and other primates: Macroscopic neuromuscular anatomy and evolutionary significance. Anat Rec (Hoboken) 2023; 306:386-400. [PMID: 35655371 DOI: 10.1002/ar.24999] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/26/2022] [Accepted: 05/11/2022] [Indexed: 01/25/2023]
Abstract
In humans, the soleus is more developed compared to other primates and has a unique architecture composed of anterior bipennate and posterior unipennate parts, which are innervated by different nerve branches. The anterior part of the human soleus was proposed to be important for bipedalism, however, the phylogenetic process resulting in its acquisition remains unclear. Providing insights into this process, the anterior part of the soleus was suggested to be closely related to the plantaris based on the branching pattern of their nerve fascicles. To reveal the phylogeny of the soleus and plantaris in primates, the innervation patterns of the posterior crural muscles were compared among a wide range of species. From their branching pattern, posterior crural muscles could be classified into superficial and deep muscle groups. The anterior part of the soleus and plantaris both belonged to the deep muscle group. In all the examined specimens of ring-tailed lemurs and chimpanzees, as well as in one out of two specimens of siamang, the nerve branches corresponding to those innervating the anterior part of the human soleus were found. The muscular branches innervating the anterior part of the soleus and plantaris formed a common trunk or were connected in all the specimens. These results indicate that the anterior part of the soleus is closely related to the plantaris across different species of primates. In turn, this suggests that the anterior part of the soleus is maintained among primates, and especially in humans, where it develops as the characteristic bipennate structure.
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Affiliation(s)
- Tohma Sakuraya
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan.,Department of Anatomy, Division of Oral Structure, Function and Development, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - Shin-Ichi Sekiya
- Faculty of Nursing, Niigata College of Nursing, Joetsu, Japan.,Department of Zoology, National Museum of Nature and Science, Tsukuba, Ibaraki, Japan
| | - Kenji Emura
- Faculty of Health Care Sciences, Himeji Dokkyo University, Himeji, Japan
| | - Takahiro Sonomura
- Department of Anatomy, Division of Oral Structure, Function and Development, Asahi University School of Dentistry, Mizuho, Gifu, Japan
| | - Eishi Hirasaki
- Section of Evolutionary Morphology, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Takamitsu Arakawa
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan
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3
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Miyazaki A, Kawashima M, Nagata I, Miyoshi M, Miyakawa M, Sugiyama M, Sakuraya T, Sonomura T, Arakawa T. Icing after skeletal muscle injury decreases M1 macrophage accumulation and TNF-α expression during the early phase of muscle regeneration in rats. Histochem Cell Biol 2023; 159:77-89. [PMID: 36114866 DOI: 10.1007/s00418-022-02143-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2022] [Indexed: 02/07/2023]
Abstract
Following skeletal muscle injury, both myogenic and immune cells interact closely during the regenerative process. Although icing is still a common acute treatment for sports-related skeletal muscle injuries, icing after muscle injury has been shown to disrupt macrophage accumulation and impair muscle regeneration in animal models. However, it remains unknown whether icing shortly after injury affects macrophage-related phenomena during the early stages of muscle regeneration. Therefore, we focused on the distribution of M1/M2 macrophages and cytokines expressed predominantly by macrophages during the early stages of muscle regeneration after muscle crush injury. Icing resulted in a decrease, not retardation, in the accumulation of M1 macrophages, but not M2 macrophages, in injured muscles. Consistent with the decrease in M1 macrophage accumulation, icing led to a reduction, instead of delay, in the level of tumor necrosis factor-α (TNF-α) expression. Additionally, at subsequent timepoints, icing decreased the number of myogenic precursor cells in the regenerating area and the size of centrally nucleated regenerating myofibers. Together, our findings suggest that icing after acute muscle damage by crushing disturbs muscle regeneration through hindering tM1 macrophage-related phenomena.
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Affiliation(s)
- Anna Miyazaki
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Masato Kawashima
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.,Department of Health and Sports Science, Kawasaki University of Medical Welfare, 288 Matsushima, Kurashiki, Okayama, 701-0193, Japan
| | - Itsuki Nagata
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Makoto Miyoshi
- Department of Biophysics, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan
| | - Motoi Miyakawa
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.,Department of Health and Sport Sciences, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Megumi Sugiyama
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.,General Tokyo Hospital, 3-15-2 Egota, Nakano-ku, Tokyo, 165-8906, Japan
| | - Tohma Sakuraya
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.,Department of Oral Anatomy, Asahi University School of Dentistry, 1851 Hozumi, Mizuho, Gifu, 501-0296, Japan
| | - Takahiro Sonomura
- Department of Oral Anatomy, Asahi University School of Dentistry, 1851 Hozumi, Mizuho, Gifu, 501-0296, Japan
| | - Takamitsu Arakawa
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, Hyogo, 654-0142, Japan.
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Kominami R, Sonomura T, Ito T, Shinohara H, Kishibe M, Uemura M, Honma S. Three-dimensional anatomical structure formed by granule cell layer and pyramidal cell layer in human hippocampus. Anat Sci Int 2023; 98:66-76. [PMID: 35661331 DOI: 10.1007/s12565-022-00673-8] [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: 11/24/2021] [Accepted: 05/14/2022] [Indexed: 01/20/2023]
Abstract
In the human hippocampus, the pyramidal layer consists of the inferior aspect of the hippocampus which is organized segmentally. Each segment, together with granule layer of the dentate gyrus, exhibits structural unity. In humans, ellipsoidal protrusions called pyramidal hillocks (PHs), which consist of a thick pyramidal cell layer (PL), are present in the inferior aspect of the hippocampus, and are segmentally organized along a longitudinal axis. It is also known that the granule cell layer (GL) of the dentate gyrus (DG) is not a smooth but undulated structure. However, the cytoarchitectural relationships between the protrusions and undulation have yet to be studied well. Here, we aimed to clarify the three-dimensional cytoarchitecture of the PL and GL of human hippocampus. For that purpose, the GL and PL were three-dimensionally reconstructed from serial sections of human hippocampus stained with hematoxylin and eosin. The GL was shaped as tubing with an opening in the dorsal part, and undulated especially in the medial part, forming digit-like processes. In the base of a digit-like process, protrusions of the GL extended laterally, with longer ones reaching the lateral edge, whereas shorter ones disappeared around the medial 1/3 of the GL. Consequently, the lateral part of the GL was undulated loosely. In the ventral view of the PL, the ellipsoidal PHs were sagittally aligned, whereas in the top view, each PH formed an ellipsoidal trough. Each structural unit was formed by a trough of the PH along the bottom, and had a longer GL protrusion in the upper-center, and shorter GL protrusions located between the longer protrusions and the lateral edge of the GL. A digit-like process extended into a dens. It is concluded that a unit of the PH and the GL comprises the longitudinal segmental formation of the hippocampus.
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Affiliation(s)
- Rieko Kominami
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Takahiro Sonomura
- Department of Oral Anatomy, Asahi University School of Dentistry, 1851 Hozumi, Mizuho, Gifu, 501-0296, Japan
| | - Tetsufumi Ito
- Department of Systems Function and Morphology, Graduate School of Innovative Life Science, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan
| | - Harumichi Shinohara
- Department of Functional Anatomy, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa, 920-0934, Japan
| | - Miyuki Kishibe
- Department of Plastic and Reconstructive Surgery, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Mamoru Uemura
- Department of Anatomy, Osaka Dental University, 8-1, Kuzuhanazono-cho, Hirakata, Osaka, 573-1121, Japan
| | - Satoru Honma
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan.
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Kawashima M, Kawanishi N, Tominaga T, Suzuki K, Miyazaki A, Nagata I, Miyoshi M, Miyakawa M, Sakuraya T, Sonomura T, Arakawa T. Icing after eccentric contraction-induced muscle damage perturbs the disappearance of necrotic muscle fibers and phenotypic dynamics of macrophages in mice. J Appl Physiol (1985) 2021; 130:1410-1420. [PMID: 33764172 DOI: 10.1152/japplphysiol.01069.2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Icing is still one of the most common treatments to acute skeletal muscle damage in sports medicine. However, previous studies using rodents reported the detrimental effect of icing on muscle regeneration following injury. This study aimed to elucidate the critical factors governing the impairment of muscle regeneration by icing with a murine model of eccentric contraction-induced muscle damage by electrical stimulation. Because of icing after muscle injury, the infiltration of polynuclear and mononuclear cells into necrotic muscle fibers was retarded and attenuated, leading to the persistent presence of necrotic cellular debris. These phenomena coincided with the delayed emergence and sustained accumulation of Pax7+ myogenic cells within the regenerating area. In addition, due to icing, delayed and/or sustained infiltration of M1 macrophages was noted in accordance with the perturbed expression patterns of inflammation-related factors, including tumor necrosis factor-α (TNF-α) and interleukin-10 (IL-10). The key myogenic regulatory factors (i.e., MyoD and myogenin) involved in the activation/proliferation and differentiation of myogenic precursor cells were not altered by icing during the regenerative process. A detailed analysis of regenerating myofibers by size distribution at day 14 after muscle damage showed that the ratio of small regenerating fibers to total regenerating fibers was higher in icing-treated animals than in untreated animals. These findings suggest that icing following muscle damage blunts the efficiency of muscle regeneration by perturbing the removal of necrotic myofibers and phenotypic dynamics of macrophages rather than affecting myogenic factors.NEW & NOTEWORTHY Icing blunted the muscle regeneration by perturbing the infiltration of polynuclear and mononuclear cells into necrotic myofibers and the phenotypic dynamics of macrophages rather than affecting the myogenic regulatory factors. Because of icing, the disappearance of necrotic muscle debris was retarded, coinciding with the delayed emergence and sustained accumulation of Pax7+ cells within the regenerating area. The expression patterns of TNF-α and IL-10 were altered by icing consistent with the perturbation of the macrophage phenotype.
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Affiliation(s)
- Masato Kawashima
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Noriaki Kawanishi
- Faculty of Advanced Engineering, Chiba Institute of Technology, Narashino, Japan
| | - Takaki Tominaga
- Graduate School of Sport Sciences, Waseda University, Tokorozawa, Japan.,Research Fellow of Japan Society for the Promotion of Sciences, Tokyo, Japan
| | | | - Anna Miyazaki
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Itsuki Nagata
- Faculty of Health Sciences, Kobe University School of Medicine, Kobe, Japan
| | - Makoto Miyoshi
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Motoi Miyakawa
- Department of Health and Sport Sciences, Graduate school of Medicine, Osaka University, Osaka, Japan
| | - Tohma Sakuraya
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Takahiro Sonomura
- Department of Oral Anatomy, Asahi University School of Dentistry, Gifu, Japan
| | - Takamitsu Arakawa
- Department of Rehabilitation Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan
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6
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Tanaka T, Nakada T, Ito T, Kominami R, Sonomura T, Kagaya M, Kawai K, Honma S. Topographical relationship between the accessory hepatic duct and the hepatic artery system. Anat Sci Int 2020; 96:112-118. [PMID: 32914370 DOI: 10.1007/s12565-020-00568-6] [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: 04/13/2020] [Accepted: 09/01/2020] [Indexed: 10/23/2022]
Abstract
Hepatic biliary injury is one of the most common complications in cholecystectomy and is frequently accompanied by arterial injuries. Because there are several anatomical variations of the hepatic ducts, including the accessory hepatic ducts (AHDs), it is important to consider not only the anatomical position of the hepatic ducts but also those of the AHDs in cholecystectomy. However, the topographical relationships between the AHDs and the hepatic arteries are still poorly understood. In the present study we show that AHDs were observed in 7 out of 59 (11.9%) of the cadavers. There was a single AHD in the 6 out of the 7 cadavers and double AHDs in one. In these cases, the right AHDs emerged from the anterior medial segment of the liver piercing the parenchyma, while the left AHDs emerged directly from the anterior part of the caudate lobe. The right AHDs ran anterior to the right hepatic artery, while the left AHDs ran posterior to the hepatic arteries. The topographical relationship between the AHD and the hepatic artery system was thus reversed in the cases of the right and the left AHDs.
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Affiliation(s)
- Takashi Tanaka
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Takayuki Nakada
- Anatomy Center, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Tetsufumi Ito
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Rieko Kominami
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Takahiro Sonomura
- Department of Anatomy, School of Dentistry, Asahi University, 1851 Hozumi, Mizuho, Gifu, 501-0296, Japan
| | - Miyuki Kagaya
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Katsushi Kawai
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | - Satoru Honma
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan.
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Sonomura T, Fujiwara T. 3pM_K1Volume bioimaging by advanced electron microscope and peripheral equipment. Microscopy (Oxf) 2018. [DOI: 10.1093/jmicro/dfy087] [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: 11/14/2022] Open
Affiliation(s)
- Takahiro Sonomura
- Department of Anatomy, School of Dentistry, Asahi University, Gifu, Japan
| | - Takio Fujiwara
- Fu-tec, Osaha, Japan
- Division of Next Generation Endoscopic Intervention, Global Center for Medical Engineering and Informatics, Osaka University, Osaka, Japan
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Matsuo M, Honma S, Sonomura T, Yamazaki M. Clinical anatomy of the cephalic vein for safe performance of venipuncture. JA Clin Rep 2018; 3:50. [PMID: 29457094 PMCID: PMC5804645 DOI: 10.1186/s40981-017-0121-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 09/05/2017] [Indexed: 01/24/2023] Open
Abstract
Background The aims of this study were to elucidate why the cephalic vein provides a reliable cannulation site from a morphological viewpoint and identify an effective landmark for avoiding injury to the superficial branch of the radial nerve (SBRN), allowing for safe venipuncture of the cephalic vein. Findings We examined 32 forearms and wrists from 18 cadavers. The cephalic vein was a constant structure containing a branch communicating with a collateral vein of the deep palmar arch via the first dorsal interossei muscle. The metacarpal vein from the medial two digits flowed into the cephalic vein. The venous confluence formed 5.8 ± 1.2 cm proximal to the radial styloid process. The SBRN passed 0.4 ± 0.3 cm volar to the venous confluence. The distance between the venous confluence and subcutaneous emergence of the SBRN was 2.6 ± 1.0 cm. Conclusions These observations suggest that the cephalic vein is a constant structure that serves as a drainage vein of the hand and provides a reliable cannulation site in the forearm. The venous confluence may serve as a novel landmark to predict the running course of the SBRN.
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Affiliation(s)
- Mitsuhiro Matsuo
- 1Department of Anesthesiology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Satoru Honma
- 2Anatomy II, Kanazawa Medical University, Uchinada, Japan
| | | | - Mitsuaki Yamazaki
- 1Department of Anesthesiology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
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Furukawa M, Tsukahara T, Tomita K, Iwai H, Sonomura T, Miyawaki S, Sato T. Neonatal maternal separation delays the GABA excitatory-to-inhibitory functional switch by inhibiting KCC2 expression. Biochem Biophys Res Commun 2017; 493:1243-1249. [PMID: 28962859 DOI: 10.1016/j.bbrc.2017.09.143] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [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: 09/15/2017] [Accepted: 09/26/2017] [Indexed: 12/23/2022]
Abstract
The excitatory-to-inhibitory functional switch of γ-aminobutyric acid (GABA; GABA switch), which normally occurs in the first to the second postnatal week in the hippocampus, is necessary for the development of appropriate central nervous system function. A deficit in GABAergic inhibitory function could cause excitatory/inhibitory (E/I) neuron imbalance that is found in many neurodegenerative disorders. In the present study, we examined whether neonatal stress can affect the timing of the GABA functional switch and cause disorders during adolescence. Neonatal stress was induced in C57BL/6J male mouse pups by maternal separation (MS) on postnatal days (PND) 1-21. Histological quantification of K+-Cl- co-transporter (KCC2) and Ca2+ imaging were performed to examine the timing of the GABA switch during the MS period. To evaluate the influence of neonatal MS on adolescent hippocampal function, we quantified KCC2 expression and evaluated hippocampal-related behavioral tasks at PND35-38. We showed that MS delayed the timing of the GABA switch in the hippocampus and inhibited the increase in membrane KCC2 expression, with KCC2 expression inhibition persisting until adolescence. Behavioral tests showed impaired cognition, declined attention, hyperlocomotion, and aggressive character in maternally separated mice. Taken together, our results show that neonatal stress delayed the timing of the GABA switch, which could change the E/I balance and cause neurodegenerative disorders in later life.
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Affiliation(s)
- Minami Furukawa
- Department of Applied Pharmacology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan; Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Takao Tsukahara
- Department of Applied Pharmacology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Kazuo Tomita
- Department of Applied Pharmacology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Haruki Iwai
- Department of Oral Anatomy and Cell Biology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Takahiro Sonomura
- Department of Oral Anatomy, Asahi University School of Dentistry, 1851 Hozumi, Mizuho, Gifu, 501-0226, Japan
| | - Shouichi Miyawaki
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Tomoaki Sato
- Department of Applied Pharmacology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan.
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10
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Nakata H, Sonomura T, Iseki S. Three-dimensional analysis of seminiferous tubules and spermatogenic waves in mice. Reproduction 2017; 154:569-579. [DOI: 10.1530/rep-17-0391] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/25/2017] [Accepted: 07/31/2017] [Indexed: 01/20/2023]
Abstract
The aim of the present study was to reconstruct seminiferous tubules and analyze spermatogenic waves in seminiferous epithelia in developing and adult mice using serial paraffin sections and high-performance three-dimensional (3D) reconstruction software. By labeling the basement membrane of seminiferous tubules with fluorescent immunohistochemistry or periodic acid-Schiff-hematoxylin staining, all seminiferous tubules were reconstructed in 9 testes from 9 different mice, 3 each at 0, 21 and 90 days (adult) postpartum. The 3D structure of seminiferous tubules, including the number and length of tubules as well as the number of connections with the rete testis, branching points and blind ends, was assessed accurately. Although tubules showed marked variations among individual mice, their overall structure was regular and retained from newborn to adult mice. Some seminiferous tubules contained inner portions running distant from the testis surface. In a representative testis at 21 days, the sites at which spermatids initially occurred were examined by labeling acrosomes and were found to be preferentially distributed in the upper and medial portions of the testis close to the rete testis. In a representative adult testis, 76 complete waves with an average length of 16.9 mm were found and their directions were analyzed. The methods used in the present study will be useful for investigating the structure and function of seminiferous tubules in mice and humans under normal and pathological conditions, such as infertility.
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11
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Matsuda W, Sonomura T, Honma S, Ohno S, Goto T, Hirai S, Itoh M, Honda Y, Fujieda H, Udagawa J, Ueda S. Anatomical variations of the recurrent artery of Heubner: number, origin, and course. Anat Sci Int 2017; 93:317-322. [PMID: 28948536 DOI: 10.1007/s12565-017-0415-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/06/2017] [Indexed: 10/18/2022]
Abstract
The clinical anatomy of the recurrent artery of Heubner (RAH) was examined, focusing on its number, origin, and course, in a large number of brain specimens. We studied 724 RAH in total from 357 brain specimens (714 hemispheres). In 98.74 % of 714 cases there were one or more RAHs, while it was absent in 1.26 % of cases. There was a single RAH in 96.22 % of cases, double in 2.38 % of cases, and triple in 0.14 % of cases. In this study, three origin types of the RAH were defined. We defined A1 and A2 segment of the anterior cerebral artery (ACA) as the artery from the origin of the ACA to the junction of the anterior communicating artery (AComA) and the artery from the junction of the AComA to the anterior border of the corpus callosum, respectively. In 76.2 % of 724 arteries, the RAH originated from the junction of the A1 and A2 segment of the ACA. In 16.3 %, the RAH originated from the A2 segment of the ACA. In 7.5 %, the RAH originated from the A1 segment of the ACA. The course of the RAH was superior to the A1 segment of the ACA in 30.1 % of 724 arteries, anterior in 62.2 %, and posterior in 7.7 %. It is of great importance for neurosurgeons to understand the detailed anatomical variations of the RAH before operating to prevent operative complications resulting in neurological deficits.
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Affiliation(s)
- Wakoto Matsuda
- Department of Anatomy, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, 520-2192, Shiga, Japan. .,Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kita-Kobayashi, Mibu-machi, Shimotsuga-gun, Tochigi, 321-0293, Japan.
| | - Takahiro Sonomura
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada-machi, Kahoku-gun, 920-0293, Ishikawa, Japan.,Department of Oral Anatomy, Asahi University School of Dentistry, 1851 Hozumi, Mizuho, 501-0296, Gifu, Japan
| | - Satoru Honma
- Department of Anatomy II, Kanazawa Medical University, 1-1 Daigaku, Uchinada-machi, Kahoku-gun, 920-0293, Ishikawa, Japan
| | - Sachi Ohno
- Department of Oral Anatomy and Cell Biology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Kagoshima, Japan.,Department of Dental Anesthesiology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Kagoshima, Japan
| | - Tetsuya Goto
- Department of Oral Anatomy and Cell Biology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Kagoshima, Japan
| | - Shuichi Hirai
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Tokyo, Japan.,Department of Anatomy, Aichi Medical University, 1-1 Yazakokarimata, Nagakute, 480-1195, Aichi, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo, 160-8402, Tokyo, Japan
| | - Yoshiko Honda
- Department of Anatomy, School of Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Tokyo, Japan
| | - Hiroki Fujieda
- Department of Anatomy, School of Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Tokyo, Japan
| | - Jun Udagawa
- Department of Anatomy, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, 520-2192, Shiga, Japan
| | - Shuichi Ueda
- Department of Histology and Neurobiology, Dokkyo Medical University School of Medicine, 880 Kita-Kobayashi, Mibu-machi, Shimotsuga-gun, Tochigi, 321-0293, Japan
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Kishi K, Mitsuzane K, Sonomura T, Nishida N, Sato M, Yamada R. Dacron-Covered Stent Therapy for Portal Vein Tumor Thrombus in Hepatocellular Carcinoma. Acta Radiol 2016. [DOI: 10.1177/028418519303400313] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A tumor thrombus of the portal vein is refractory to therapy and constitutes a serious prognostic factor in hepatocellular carcinoma. For the purpose of treating portal vein tumor thrombus by restoring the blood flow and preventing recurrent ingrowth of tumor, we devised a metallic stent partially covered with a Dacron mesh sheet, and a coaxial percutaneous delivery system. One half of the wall of a Gianturco Z-stent was covered with a sheet of 0.25-mm-thick Dacron mesh, fixed to the stent wall with nylon threads. The covered stent was implanted in a patient with severe main portal vein stenosis due to tumor thrombus protruding from the left portal vein branch. Immediately after stent placement the tumor stenosis was effectively dilated, the portal blood flow restored, and the portal hypertension relieved. CT and angiography after 8 months still showed complete portal vein patency. Intrahepatic tumor dissemination or other complications were not observed. Intraportal placement of a covered metallic stent appears to be an efficacious therapy of major portal tumor thrombi.
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Sonomura T, Furuta T, Nakatani I, Yamamoto Y, Honma S, Kaneko T. Attempt of correlative observation of morphological synaptic connectivity by combining confocal laser-scanning microscope and FIB-SEM for immunohistochemical staining technique. Microscopy (Oxf) 2016; 63 Suppl 1:i8. [PMID: 25359848 DOI: 10.1093/jmicro/dfu043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ten years have passed since a serial block-face scanning electron microscopy (SBF-SEM) method was developed [1]. In this innovative method, samples were automatically sectioned with an ultramicrotome placed inside a scanning electron microscope column, and the block surfaces were imaged one after another by SEM to capture back-scattered electrons. The contrast-inverted images obtained by the SBF-SEM were very similar to those acquired using conventional TEM. SFB-SEM has made easy to acquire image stacks of the transmission electron microscopy (TEM) in the mesoscale, which is taken with the confocal laser-scanning microcopy(CF-LSM).Furthermore, serial-section SEM has been combined with the focused ion beam (FIB) milling method [2]. FIB-incorporated SEM (FIB-SEM) has enabled the acquisition of three-dimensional images with a higher z-axis resolution com- pared to ultramicrotome-equipped SEM.We tried immunocytochemistry for FIB-SEM and correlated this immunoreactivity with that in CF-LSM. Dendrites of neurons in the rat neostriatum were visualized using a recombinant viral vector. Moreover, the thalamostriatal afferent terminals were immunolabeled with Cy5 fluorescence for vesicular glutamate transporter 2 (VGluT2). After detection of the sites of terminals apposed to the dendrites by using CF-LSM, GFP and VGluT2 immunoreactivities were further developed for EM by using immunogold/silver enhancement and immunoperoxidase/diaminobenzidine (DAB) methods, respectively.We showed that conventional immuno-cytochemical staining for TEM was applicable to FIB-SEM. Furthermore, several synaptic contacts, which were thought to exist on the basis of CF-LSM findings, were confirmed with FIB-SEM, revealing the usefulness of the combined method of CF-LSM and FIB-SEM.
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Affiliation(s)
| | - Takahiro Furuta
- Department of Morphological Brain Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Yo Yamamoto
- Hitachi High-Tech Science Corporation, Tokyo, Japan
| | - Satoru Honma
- Anatomy II, Kanazawa Medical University, Uchinada, Japan
| | - Takeshi Kaneko
- Department of Morphological Brain Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Tsukahara T, Masuhara M, Iwai H, Sonomura T, Sato T. The effect of repeated stress on KCC2 and NKCC1 immunoreactivity in the hippocampus of female mice. Data Brief 2016; 6:521-5. [PMID: 26904715 PMCID: PMC4724697 DOI: 10.1016/j.dib.2015.12.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/30/2015] [Accepted: 12/20/2015] [Indexed: 11/20/2022] Open
Abstract
K+–Cl− co-transporter (KCC2) and Na+–K+–2Cl− co-transporter (NKCC1) are the main regulators of neuronal intracellular chloride concentration; altered expression patterns of KCC2 and NKCC1 have been reported in several neurodegenerative diseases. In this paper, we show the effect of repeated stress on KCC2, NKCC1, and serine 940 phosphorylated KCC2 (pKCC2ser940) immunoreactivity. The data were obtained from the hippocampus of female mice using single-plane confocal microscopy images. The mean fluorescence intensity of the perisomatic area of neurons, defined as raw fluorescence intensity (RFI) was calculated. Repeated stress (RS) resulted in a decrease in perisomatic area of immunoreactive (IR)-KCC2 and an increase of the IR-NKCC1. In addition, RS decreased perisomatic IR-pKCC2ser940, corresponding to that of KCC2. The data in this article support the results of a previous study [1] and provide the details of immunohistological methods. Interpretation of the data in this article can be found in “Repeated stress-induced expression pattern alterations of the hippocampal chloride transporters KCC2 and NKCC1 associated with behavioral abnormalities in female mice” by Tsukahara et al. [1].
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Key Words
- (IR), immunoreactive
- CA1, cornus ammonis 1
- CA3, cornus ammonis 3
- DG, dentate gyrus
- GC, granular cell
- IHC
- IHC, immunohistochemistry
- KCC2
- KCC2, K+–Cl− co-transporter
- NKCC1
- NKCC1, Na+–K+–2Cl− co-transporter
- PB, phosphate buffer
- PBS, phosphate buffered saline
- PBS-X, phosphate buffered saline-triton X
- PFA, paraformaldehyde
- RFI, raw fluorescence intensity
- RS, repeated stress
- pKCC2ser940, serine 940 phosphorylated KCC2
- repeated stress
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Affiliation(s)
- Takao Tsukahara
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
| | - Masaaki Masuhara
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
| | - Haruki Iwai
- Department of Oral Anatomy and Cell Biology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
| | - Takahiro Sonomura
- Department of Anatomy II, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa 920-0293, Japan
| | - Tomoaki Sato
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
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Nakata H, Wakayama T, Sonomura T, Honma S, Hatta T, Iseki S. Three-dimensional structure of seminiferous tubules in the adult mouse. J Anat 2015; 227:686-94. [PMID: 26391090 DOI: 10.1111/joa.12375] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2015] [Indexed: 11/28/2022] Open
Abstract
Seminiferous tubules develop from sex cords, which are embryonic structures with simple C-shaped arches. Histologically, the epithelium of adult mouse seminiferous tubules has been divided into 12 stages based on the associations of spermatogenic cells in four cycles of spermatogenesis. However, the gross characteristics of the seminiferous tubules themselves, including their number, length, run, and mutual relationships remain largely unknown. In the present study, we analyzed all seminiferous tubules in a single adult mouse testis with high resolution using serial paraffin sections and high-perfomance three-dimensional reconstruction software. There were 11 seminiferous tubules with an average length of 140 mm. Each tubule ran along circular paths within the testis while making convolutions with cranial and caudal hairpin turns. The cranial turns of all tubules were in contact with the tunica albuginea, whereas the caudal turns were not, resulting in funnel-shaped networks of these tubules with tapered caudal portions. The caudally located networks surrounded the preceding cranially located networks from the bottom and outside, similar to stacked paper cups. Five out of the 11 seminiferous tubules were continuous from one end to the other both connected with the rete testis (10 connection points). Nine branching points, one blind end, and 18 more connection points with the rete testis were detected in the remaining six seminiferous tubules, making the paths of these tubules complicated to various degrees. The present study revealed that the 3D structures of seminiferous tubules were highly regular as a whole in the adult mouse testis.
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Affiliation(s)
- Hiroki Nakata
- Department of Histology and Embryology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Tomohiko Wakayama
- Department of Histology and Embryology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takahiro Sonomura
- Department of Anatomy II, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Satoru Honma
- Department of Anatomy II, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Toshihisa Hatta
- Department of Anatomy, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Shoichi Iseki
- Department of Histology and Embryology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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Tsukahara T, Masuhara M, Iwai H, Sonomura T, Sato T. Repeated stress-induced expression pattern alterations of the hippocampal chloride transporters KCC2 and NKCC1 associated with behavioral abnormalities in female mice. Biochem Biophys Res Commun 2015; 465:145-51. [PMID: 26239662 DOI: 10.1016/j.bbrc.2015.07.153] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 07/23/2015] [Accepted: 07/30/2015] [Indexed: 12/17/2022]
Abstract
The balance of cation-chloride co-transporters, particularly KCC2 and NKCC1, is critical for GABAergic inhibitory signaling. However, KCC2/NKCC1 balance is disrupted in many neurodegenerative diseases. Moreover, correlations between chronic stress, KCC2 and NKCC1 in the hippocampus remain poorly understood. Despite the fact that emotional disorders in humans are far more prevalent in women, there have been relatively few studies about female subjects. Here we investigated behaviors and expression patterns of KCC2 and NKCC1 in the hippocampi of female mice under chronic stress. Repeated stress (RS) was induced in experimental mice by repeated forced water administration. Then, expression patterns of GABAergic signaling molecules were identified by immunohistochemical analysis and performance was assessed using several behavioral tests. The results of semi-quantitative analysis showed that RS decreased KCC2 expression and increased NKCC1 expression in membranes of granular and pyramidal cells in the hippocampus. The novel object recognition (NOR) test and sociability test revealed that RS induced cognitive and sociability deficits, whereas RS increased the time spent in the open arms of the elevated plus maze test and induced attention deficits in other tests. In summary, RS induced alterations in membrane KCC2/NKCC1 balance in the hippocampus of female mice, which may contribute to GABAergic disinhibition associated with cognitional, sociability and attention deficits.
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Affiliation(s)
- Takao Tsukahara
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
| | - Masaaki Masuhara
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan
| | - Haruki Iwai
- Department of Oral Anatomy and Cell Biology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-854, Japan
| | - Takahiro Sonomura
- Department of Anatomy II, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa 920-0293, Japan
| | - Tomoaki Sato
- Department of Applied Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima 890-8544, Japan.
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Uemura M, Sonomura T, Iwai H, Yamanaka A. Localization of masticatory motoneurons in the trigeminal motor nucleus of shrew and pig, with emphasis on the innervation ratio in the shrew. J Oral Biosci 2013. [DOI: 10.1016/j.job.2013.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sonomura T, Furuta T, Nakatani I, Yamamoto Y, Unzai T, Matsuda W, Iwai H, Yamanaka A, Uemura M, Kaneko T. Correlative analysis of immunoreactivity in confocal laser-scanning microscopy and scanning electron microscopy with focused ion beam milling. Front Neural Circuits 2013; 7:26. [PMID: 23443927 PMCID: PMC3581071 DOI: 10.3389/fncir.2013.00026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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: 05/03/2012] [Accepted: 02/05/2013] [Indexed: 01/28/2023] Open
Abstract
Recently, three-dimensional reconstruction of ultrastructure of the brain has been realized with minimal effort by using scanning electron microscopy (SEM) combined with focused ion beam (FIB) milling (FIB-SEM). Application of immunohistochemical staining in electron microscopy (EM) provides a great advantage in that molecules of interest are specifically localized in ultrastructures. Thus, we applied immunocytochemistry for FIB-SEM and correlated this immunoreactivity with that in confocal laser-scanning microcopy (CF-LSM). Dendrites of medium-sized spiny neurons in the rat neostriatum were visualized using a recombinant viral vector, which labeled the infected neurons with membrane-targeted GFP in a Golgi stain-like fashion. Moreover, the thalamostriatal afferent terminals were immunolabeled with Cy5 fluorescence for vesicular glutamate transporter 2 (VGluT2). After detection of the sites of terminals apposed to the dendrites by using CF-LSM, GFP and VGluT2 immunoreactivities were further developed for EM by using immunogold/silver enhancement and immunoperoxidase/diaminobenzidine (DAB) methods, respectively. In contrast-inverted FIB-SEM images, silver precipitations and DAB deposits were observed as fine dark grains and diffuse dense profiles, respectively, indicating that these immunoreactivities were as easily recognizable as those in the transmission electron microscopy (TEM) images. Furthermore, in the sites of interest, some appositions displayed synaptic specializations of an asymmetric type. Thus, the present method was useful in the three-dimensional analysis of immunocytochemically differentiated synaptic connections in the central neural circuit.
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Affiliation(s)
- Takahiro Sonomura
- Department of Anatomy for Oral Sciences, Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima, Japan
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Kameda H, Hioki H, Tanaka YH, Tanaka T, Sohn J, Sonomura T, Furuta T, Fujiyama F, Kaneko T. Parvalbumin-producing cortical interneurons receive inhibitory inputs on proximal portions and cortical excitatory inputs on distal dendrites. Eur J Neurosci 2012; 35:838-54. [PMID: 22429243 DOI: 10.1111/j.1460-9568.2012.08027.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
To examine inputs to parvalbumin (PV)-producing interneurons, we generated transgenic mice expressing somatodendritic membrane-targeted green fluorescent protein specifically in the interneurons, and completely visualized their dendrites and somata. Using immunolabeling for vesicular glutamate transporter (VGluT)1, VGluT2, and vesicular GABA transporter, we found that VGluT1-positive terminals made contacts 4- and 3.1-fold more frequently with PV-producing interneurons than VGluT2-positive and GABAergic terminals, respectively, in the primary somatosensory cortex. Even in layer 4, where VGluT2-positive terminals were most densely distributed, VGluT1-positive inputs to PV-producing interneurons were 2.4-fold more frequent than VGluT2-positive inputs. Furthermore, although GABAergic inputs to PV-producing interneurons were as numerous as VGluT2-positive inputs in most cortical layers, GABAergic inputs clearly preferred the proximal dendrites and somata of the interneurons, indicating that the sites of GABAergic inputs were more optimized than those of VGluT2-positive inputs. Simulation analysis with a PV-producing interneuron model compatible with the present morphological data revealed a plausible reason for this observation, by showing that GABAergic and glutamatergic postsynaptic potentials evoked by inputs to distal dendrites were attenuated to 60 and 87%, respectively, of those evoked by somatic inputs. As VGluT1-positive and VGluT2-positive axon terminals were presumed to be cortical and thalamic glutamatergic inputs, respectively, cortical excitatory inputs to PV-producing interneurons outnumbered the thalamic excitatory and intrinsic inhibitory inputs more than two-fold in any cortical layer. Although thalamic inputs are known to evoke about two-fold larger unitary excitatory postsynaptic potentials than cortical ones, the present results suggest that cortical inputs control PV-producing interneurons at least as strongly as thalamic inputs.
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Affiliation(s)
- Hiroshi Kameda
- Department of Morphological Brain Science, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
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Kishi K, Sato M, Noda Y, Sonomura T, Shirai S, Yamada R. PO-203 RECTUM PRESERVATION BY BOLUS HYALURONAN INJECTION INTO PERI/PARA RECTAL SPACE DURING HDR-BT OF PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72169-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis. We present a case of a 56-year-old male with ECD. As time progressed, involvement of the orbital fossa, cranial convexity, spinal cord, brain stem, thyroid, lung, retroperitoneum, lower extremity bones and skin were found. Previously reported cases reveal the frequency of ECD with spinal cord involvement is rare. Although this was a presumed diagnosis based on other lesions, our case is the first in which both intramedullary and epidural masses are present.
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Affiliation(s)
- T Takeuchi
- Department of Radiology, Wakayama Medical University, Wakayama, Japan
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Ohno S, Kuramoto E, Furuta T, Hioki H, Tanaka YR, Fujiyama F, Sonomura T, Uemura M, Sugiyama K, Kaneko T. A Morphological Analysis of Thalamocortical Axon Fibers of Rat Posterior Thalamic Nuclei: A Single Neuron Tracing Study with Viral Vectors. Cereb Cortex 2011; 22:2840-57. [DOI: 10.1093/cercor/bhr356] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Matsuda W, Furuta T, Sonomura T, Kaneko T, Yasuhara O, Kudo M. Axonal arborization of midbrain non-dopaminergic neurons: Single-cell study. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.615] [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: 10/17/2022]
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Sonomura T, Furuta T, Unzai T, Matsuda W, Iwai H, Fujiyama F, Uemura M, Kaneko T. Attempt of quantitative analysis of morphological synaptic connectivity by combining focused ion beam milling and scanning electron microscopy (FIB–SEM) and confocal laser-scanning microscope. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.1351] [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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Yonamine Y, Matsuyama T, Sonomura T, Takeuchi H, Furuichi Y, Uemura M, Izumi Y, Noguchi K. Effectable application of vascular endothelial growth factor to critical sized rat calvaria defects. ACTA ACUST UNITED AC 2010; 109:225-31. [PMID: 20034820 DOI: 10.1016/j.tripleo.2009.09.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2009] [Revised: 08/19/2009] [Accepted: 09/05/2009] [Indexed: 11/25/2022]
Abstract
OBJECTIVE An early vascular response for angiogenesis is essential for the normal progression of bone defect healing. Vascular endothelial growth factor (VEGF) is a potent inducer of angiogenesis. The aim of this study was to evaluate the effects of a poly (L,D-lactic-co-glycolic acid) (PLGA) membrane with VEGF encapsulated into PLGA microspheres on bone regeneration at bone defects in rat calvaria. STUDY DESIGN Microspheres of PLGA incorporating VEGF(165) (VEGF microspheres) were prepared, and critical-size bone defects were created in rat calvaria. The VEGF microspheres, PLGA microspheres, or VEGF microspheres plus PLGA membrane were applied to the defects. Bone regeneration was evaluated using image analysis based on soft radiographic and histologic examination. RESULTS Mature thick bone regeneration was observed in selected sites at bone defects that had been applied with VEGF microspheres/PLGA membrane compared with those that had been applied with the other treatments. CONCLUSION A combination of VEGF microspheres and a PLGA membrane effectively enhances bone regeneration.
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Affiliation(s)
- Yutaka Yonamine
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Ohno S, Kuramoto E, Fujiyama F, Furuta T, Hioki H, Tanaka Y, Sonomura T, Sugiyama K, Kaneko T. A morphological analysis of thalamocortical neurons in rat posterior nuclei by single neuron labeling with viral vectors. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.2268] [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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Iwai H, Sonomura T, Yamanaka A, Uemura M. Territory of gustatory area in the rat thalamus. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.1713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Koshimizu Y, Wu SX, Unzai T, Hioki H, Sonomura T, Nakamura KC, Fujiyama F, Kaneko T. Paucity of enkephalin production in neostriatal striosomal neurons: analysis with preproenkephalin-green fluorescent protein transgenic mice. Eur J Neurosci 2009; 28:2053-64. [PMID: 19046386 DOI: 10.1111/j.1460-9568.2008.06502.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Whether or not the striosome compartment of the neostriatum contained preproenkephalin (PPE)-expressing neurons remained unresolved. To address this question by developing a sensitive detection method, we generated transgenic mice expressing enhanced green fluorescent protein (GFP) under the specific transcriptional control of the PPE gene. Eight transgenic lines were established, and three of them showed GFP expression which was distributed in agreement with the reported localization of PPE mRNA in the central nervous system. Furthermore, in the matrix compartment of the neostriatum of the three lines, intense GFP immunoreactivity was densely distributed in the neuronal cell bodies and neuropil, and matrix neurons displayed > 94% co-localization for GFP and PPE immunoreactivities. In sharp contrast, GFP immunoreactivity was very weak in the striosome compartment, which was characterized by intense immunoreactivity for mu-opioid receptors (MOR). Although neostriatal neurons were divided into GFP-immunopositive and -negative groups in both the striosome and matrix compartments, GFP immunoreactivity of cell bodies was much weaker (~1/5) in GFP-positive striosomal neurons than in GFP-positive matrix neurons. A similar reciprocal organization of PPE and MOR expression was also suggested in the ventral striatum, because GFP immunoreactivity was weaker in intensely MOR-immunopositive regions than in the surrounding MOR-negative regions. As PPE-derived peptides are endogenous ligands for MOR in the neostriatum and few axon collaterals of matrix neurons enter the striosome compartment, the present results raised the question of the target of those peptides produced abundantly by matrix neurons.
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Affiliation(s)
- Yoshinori Koshimizu
- Department of Morphological Brain Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Sonomura T, Furuta T, Okamoto-Furuta K, Unzai T, Uemura M, Kaneko T. Quantitative analysis of excitatory inputs to the three groups of the neostriatal projection neurons in rats. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.704] [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: 10/20/2022]
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Tanaka Y, Tanaka Y, Konno M, Fujiyama F, Okamoto-Furuta K, Sonomura T, Kameda H, Hioki H, Furuta T, Nakamura K, Kaneko T. Intra- and juxta-columnar projection of cortical pyramidal neurons to corticothalamic neurons in the rat somatosensory cortex. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.939] [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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Sonomura T, Nakamura K, Furuta T, Hioki H, Nishi A, Yamanaka A, Uemura M, Kaneko T. Expression of D1 but not D2 dopamine receptors in striatal neurons producing neurokinin B in rats. Eur J Neurosci 2008; 26:3093-103. [PMID: 18028111 DOI: 10.1111/j.1460-9568.2007.05923.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Neostriatal projection neurons are known to be largely divided into two groups, striatoentopeduncular/striatonigral and striatopallidal neurons, which mainly express D1 and D2 dopamine receptors, respectively. Recently, a small population of neostriatal neurons have been reported to produce neurokinin B (NKB), and send their axons mainly to the basal forebrain regions. To reveal which type of dopamine receptors were expressed by these NKB-producing neurons, we examined rat striatal neurons by combining immunofluorescence labeling for preprotachykinin B (PPTB), the precursor of NKB, and fluorescence in situ hybridization labeling for dopamine receptors. Fluorescent signals for D1 receptor mRNA were detected in 85-89% of PPTB-immunopositive neurons in the neostriatum, accumbens nucleus and lateral stripe of the striatum, whereas almost no signal for D2 receptor was observed in PPTB-positive striatal neurons. To further reveal intracellular signaling downstream of D1 receptor in PPTB-producing neurons, we used a double immunofluorescence labeling method to study the localization of some substrates for protein kinase A (PKA), which was known to be activated by D1 receptor. Although only 3-7% of PPTB-immunopositive striatal neurons displayed immunoreactivity for dopamine- and cAMP-regulated phosphoprotein of 32 kDa, a well-known PKA substrate expressed in the two major groups of neostriatal projection neurons, 60-64% of PPTB-positive striatal neurons exhibited immunoreactivity for striatal-enriched tyrosine phosphatase. These results suggest that NKB-producing neostriatal neurons are similar to striatoentopeduncular/striatonigral neurons in the usage of dopamine receptor subtypes, but different from the two major groups of neostriatal projection neurons in terms of the downstream signaling of dopamine receptors.
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Affiliation(s)
- Takahiro Sonomura
- Department of Anatomy for Oral Sciences, Graduate School of Medical and Dental Sciences, Advanced Therapeutic Course, Field of Neurology, Kagoshima University, Kagoshima 890-8544, Japan
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Kishi K, Shirai S, Sato M, Sonomura T. Computer-Aided Preservation of Risk Organs in Critical Brachytherapy by Tissue Spacing With Percutaneous Injection of Hyaluronic Acid Solution. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sonomura T, Furuta T, Furuta KO, Unzai T, Iwai H, Uemura M, Kaneko T. Quantitative analysis of inputs to projection neurons from the neocortex or the thalamus in the rat neostriatum. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.1106] [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: 11/27/2022]
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Kishi K, Yoshimasu T, Shirai S, Minakata Y, Kimura M, Sonomura T, Shioyama Y, Sato M. Usefulness of mini-tracheostomy and torque controlled insertion of applicator in fractionated endobronchial brachytherapy. Br J Radiol 2006; 79:522-5. [PMID: 16714756 DOI: 10.1259/bjr/31613651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Endobronchial brachytherapy was developed as effective treatment of endobronchial cancer and fractionated schedule is applied to decrease late toxicity. However, repeated bronchofiberscopy is onerous to the patient and restricts the treatment schedule itself. We applied mini-tracheostomy for a ready access route, and a torque controlled technique for easy insertion of the endobronchial applicator. Eight patients with tracheobronchial cancer invasion were treated with endobronchial brachytherapy of 18-30 Gy/3-5 fractions/1.5-2.5 weeks (median 24 Gy/4 fractions/2 weeks) at reference points of 5 mm from the bronchial surface. The averaged individual irradiation and single session times were 4 min and 24 min, respectively. There were no procedure-related complications. These technical improvements may facilitate flexible fractionated dose prescriptions.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical University, Wakayama City, Japan
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Kishi K, Takifuji K, Shirai S, Sonomura T, Sato M, Yamaue H. Brachytherapy technique for abdominal wall metastases of colorectal cancer: ultrasound-guided insertion of applicator needle and a skin preservation method. Acta Radiol 2006; 47:157-61. [PMID: 16604961 DOI: 10.1080/02841850500466542] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PURPOSE To report a technique of interstitial brachytherapy for the treatment of subcutaneous metastatic abdominal wall tumors. MATERIAL AND METHODS We developed a brachytherapy technique consisting of ultrasound-guided insertion of applicator needles to avoid the organs at risk, such as intestines, and saline injection into the subcutaneous tissue between the tumor and the skin to decrease the skin dose. We encountered three patients with painful metastases from rectal carcinoma in the abdominal wall refractory to external radiotherapy. They were subjected to this brachytherapy with a single dose of 20 Gy. RESULTS The procedure was safely achieved in all three patients. Long-lasting pain reduction and tumor shrinkage was obtained without early or late complications. CONCLUSION This interstitial brachytherapy technique seems to be feasible in the treatment of metastatic abdominal wall tumors.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical College, Wakayama City, Japan.
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Kishi K, Sonomura T, Shirai S, Sato M. Strategy in Treatment of Oncologic Superior Vena Cava Syndrome: a Retrospective Analysis on 100 Patients. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Radiotherapy has seldom been used in the treatment of arteriovenous malformations (AVM) involving the spinal cord because of the cord's limited radiation tolerance. A 57-year-old woman with progressive myelopathy due to AVM was treated with a selective conformal radiation therapy (55.6 Gy/20 days) on the nidus region preserving the spinal cord, drainer veins and involved bones. The drainers and symptoms were minimized at the end of treatment and disappeared over 2 years. This case illustrates the usefulness of selective conformal radiation therapy.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical University, Kimiidera 811-1, Wakayama City, 641-0012, Japan
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Sonomura T, Kataoka S, Chikugo T, Hirooka T, Makimoto S, Nakamoto T, Sato M. Epidermoid cyst originating from an intrapancreatic accessory spleen. Abdom Imaging 2002; 27:560-2. [PMID: 12172998 DOI: 10.1007/s00261-001-0145-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Pancreatectomy in a 45-year-old woman showed, after pathologic analysis, an epidermoid cyst originating from an intrapancreatic accessory spleen. This mass consisted of parenchymal and cystic components. It is important to note the relation between the splenic parenchyma and the parenchymal component of the mass for the differential diagnosis of a cystic mass in the pancreatic tail.
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Affiliation(s)
- T Sonomura
- Department of Radiology, Kishiwada Tokushukai Hospital, 4-22-38 Isonokami-Cho, Kishiwada-Shi, Osaka, 596-8522, Japan
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Sonomura T, Kishi K, Ishii S, Kawai N, Masuda M, Terada M, Nakamine H, Sato M. Usefulness of CT virtual endoscopy in imaging a large esophagorespiratory fistula. Eur J Radiol 2000; 34:60-2. [PMID: 10802210 DOI: 10.1016/s0720-048x(99)00100-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A 73-year-old woman with a large esophagorespiratory fistula underwent bronchoscopy and computed tomographic (CT) virtual endoscopy before stenting. Noninvasive CT virtual endoscopy showed the large fistula, and the CT findings agreed with the bronchoscopic findings.
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Affiliation(s)
- T Sonomura
- Department of Radiology, Wakayama Medical College, 811-1 Kimiidera, Wakayama Shi, Japan
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Kishi K, Matsunaka M, Sato M, Sonomura T, Sakurane M, Uede K. T1 and T2 lip cancer: a superselective method of facial arterial infusion therapy--preliminary experience. Radiology 1999; 213:173-9. [PMID: 10540658 DOI: 10.1148/radiology.213.1.r99oc06173] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To formulate and evaluate a facial arterial infusion chemotherapy for squamous cell lip carcinoma. MATERIALS AND METHODS The study included six patients (age range, 46-84 years) with squamous cell carcinoma of the lower lip. There were two T1 tumors, three T2 tumors, and one T1-compatible postoperative recurrent tumor. A 4-F, double-lumen balloon catheter was inserted into the external carotid artery through the superficial temporal artery and placed for selective infusion into the tumor-feeding facial artery. Patients received a combination of mitomycin C (4.4 mg/m2 per body surface area) on day 1 and 3.2 mg/m2 of peplomycin sulfate on days 1-7 (22.4 mg/m2 per week), or, when peplomycin sulfate was contraindicated, 16 mg/m2 of cisplatin only on days 1-5 (80 mg/m2 per week). Two to three cycles of chemotherapy were given until tumor disappearance was histologically confirmed. RESULTS Complete tumor disappearance was achieved in all cases. One patient had a self-limiting asthma attack during peplomycin sulfate treatment, and another had transient partial hair loss. No disfigurement, recurrence, or late complications were observed at a mean follow-up of 5.0 years (range, 2.3-11.2 years). CONCLUSION The described facial arterial infusion chemotherapy appears to be a safe and curative treatment for T1 and T2 squamous cell lip carcinomas.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical College, Japan.
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Kishi K, Shirai S, Sato M, Kawai N, Sonomura T. 2117 A selective respiratory-gated radiotherapy to portal or hepatic veinous tumor thrombi in patients with hepatocellular carcinoma and liver cirrhosis: A preliminary experience. Int J Radiat Oncol Biol Phys 1999. [DOI: 10.1016/s0360-3016(99)90387-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kawai N, Sato M, Sonomura T, Kishi K, Terada M, Tanaka K, Tanaka H, Nosaka M, Takata H, Nakanishi H, Yoshikawa A. [Experimental study of percutaneous hot ethanol injection therapy (PHEIT) by continuous heating device for hepatocellular carcinoma]. Nihon Igaku Hoshasen Gakkai Zasshi 1998; 58:366-8. [PMID: 9711077] [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] [Indexed: 02/08/2023]
Abstract
Percutaneous ethanol injection therapy (PEIT) is widely used as a local treatment for hepatocellular carcinoma (HCC). However, because only a small amount of ethanol can be used in one PEIT session and because the antitumor effect is limited, this modality is indicated only when there are three or fewer tumors and when the tumor diameter is < or = 3 cm. To obtain a more potent and certain antitumor effect, we have devised a new treatment called percutaneous hot ethanol injection therapy (PHEIT), and developed a Continuous Heating Device with which ethanol can be heated and locally injected at a specified temperature. The continuous Heating Device is composed of three major components: a syringe heater, a needle thermocontroller, and a needle tip thermosensor. A disposable syringe filled with liquid is inserted into the syringe heater, which heats the liquid to a desired temperature by adjusting the voltage. The needle thermocontroller is a puncture guide needle to which a heating device has been attached. The needle-tip thermosensor constantly measures, displays and records the temperature of the liquid at the needle tip during injection. Also, because the Continuous Heating Device is a closed-circuit system, there is no risk of accidental a fire, which ensures procedural safety. It is also possible to use this device to safely heat and inject a variety of other liquids, such as physiological saline and anticancer agents and thus contribute to the widespread development of ultrasound-guided injection therapy.
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Affiliation(s)
- N Kawai
- Department of Radiology, Wakayama Medical College
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Sonomura T, Sato M, Kishi K, Terada M, Shioyama Y, Kimura M, Suzuki K, Kutsukake Y, Ushimi T, Tanaka J, Hayashi S, Tanaka S. Balloon-occluded retrograde transvenous obliteration for gastric varices: a feasibility study. Cardiovasc Intervent Radiol 1998; 21:27-30. [PMID: 9473542 DOI: 10.1007/s002709900206] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE To evaluate the clinical feasibility of balloon-occluded retrograde transvenous obliteration (BORTO) for gastric varices. METHODS BORTO was performed in 14 patients with gastric varices due to liver cirrhosis. The gastric varices were confirmed by endoscopy, and their feeding and draining veins were identified by contrast-enhanced computed tomography (CT) and angiography. A 6 Fr Simmons-shaped balloon catheter was inserted into the gastrorenal shunt. The balloon was inflated, and 5% ethanolamine oleate iopamidol was infused slowly through the catheter. Patients were followed up with endoscopy and enhanced CT at 1 week, 1, 3, and 6 months after the procedure and every 6 months thereafter. RESULTS The gastric varices completely disappeared in 12 of 14 patients and was partially resolved in the remaining 2 patients. Neither a recurrence nor an aggravation of gastric varices were found. No major complications were experienced. CONCLUSION BORTO is a safe and effective treatment for gastric varices.
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Affiliation(s)
- T Sonomura
- Department of Radiology, Wakayama Medical College, 27 Banchi, 7 Bancho, Wakayama City 640, Japan
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Maeda H, Sato M, Kimura M, Kawai N, Sonomura T, Kishi K, Terada M. Focal fatty infiltration in the quadrate lobe of the liver accompanied by aberrant right gastric vein. Radiat Med 1998; 16:61-4. [PMID: 9568636] [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] [Indexed: 02/07/2023]
Abstract
Focal fatty liver in the posterior edge of the quadrate lobe was observed in a 59-year-old woman. This lesional portion was nourished by the aberrant right gastric vein, not by the main portal vein. This abnormality in portal blood flow was suspected to be one of the causes of the focal fatty liver.
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Affiliation(s)
- H Maeda
- Department of Radiology, Wakayama Medical College, Japan
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Kishi K, Fujimoto HK, Sonomura T, Uetani K, Nishida N, Ohata M, Sato M, Yamada R. A dedicated Z-stent for acquired saber-sheath tracheobronchomalacia. Cardiovasc Intervent Radiol 1997; 20:462-5. [PMID: 9354717 DOI: 10.1007/s002709900194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 02/05/2023]
Abstract
The tracheobronchial lumen has a continuous horseshoe arch morphology. We formed Z-stents accordingly to support the weakened cartilagenous portions. With this type of stent we treated a patient with acquired saber-sheath type tracheobronchomalacia (TBM), Rayl's type II, Johnson's grade III, whose condition was aggravated even under positive end expiratory pressure (PEEP) therapy. The patient improved gradually. No immediate complication was observed. Bronchofiberscopic examination revealed that the tracheobronchial arcade was closely strut-braced and showed no expiratory collapse. Six months later, when the patient was intubated due to asthmatic attacks, tissue ingrowth through the stent was found and removed. There was no recurrence of TBM. The patient died 2 years later of pneumoconiosis.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical College, 7-Bancho-27, Wakayama City, 640 Japan
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Maeda H, Sato M, Yoshikawa A, Kimura M, Sonomura T, Terada M, Kishi K. Brain MR imaging in patients with hepatic cirrhosis: relationship between high intensity signal in basal ganglia on T1-weighted images and elemental concentrations in brain. Neuroradiology 1997; 39:546-50. [PMID: 9272489 DOI: 10.1007/s002340050464] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In patients with hepatic cirrhosis, the globus pallidus and putamen show high intensity on T1-weighted MRI. While the causes of this high signal have been thought to include paramagnetic substances, especially manganese, no evidence for this has been presented. Autopsy in four cases of hepatic cirrhosis permitted measurement of metal concentrations in brain and histopathological examination. In three cases the globus pallidus showed high intensity on T1-weighted images. Mean manganese concentrations in globus pallidus, putamen and frontal white matter were 3.03 +/- 0.38, 2.12 +/- 0.37, and 1.38 +/- 0.24 (micrograms/g wet weight), respectively, being approximately four- to almost ten-fold the normal values. Copper concentrations in globus pallidus and putamen were also high, 50% more than normal. Calcium, iron, zinc and magnesium concentrations were all normal. The fourth case showed no abnormal intensity in the basal ganglia and brain metal concentrations were all normal. Histopathologically, cases with showing high signal remarkable atrophy, necrosis, and deciduation of nerve cells and proliferation of glial cells and microglia in globus pallidus.. These findings were similar to those in chronic manganese poisoning. On T1-weighted images, copper deposition shows no abnormal intensity. It is therefore inferred that deposition of highly concentrations of manganese may caused high signal on T1-weighted images and nerve cell death in the globus pallidus.
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Affiliation(s)
- H Maeda
- Department of Radiology, Wakayama Medical College, Japan
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Kishi K, Sonomura T, Terada M, Sato M. Scoop biopsy of intracaval tumor thrombi: a preliminary report of a minimally invasive technique to obtain large samples. Eur J Radiol 1997; 24:263-8. [PMID: 9232401 DOI: 10.1016/s0720-048x(96)01036-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE The purpose of this study is to safely improve the yield of intracaval biopsy. MATERIALS AND METHOD A co-axial system was composed of an inner catheter with a smoothly tapered tip with a shark jaw, and an outer sheath. The biopsy procedure consisted of four steps: (1) the tip was stuck into the target thrombi; (2) the inner sheath was advanced deeply into the target and the jaw was opened within the mass; (3) the outer sheath was advanced to envelope the inner cather; (4) then the system was withdrawn. After simulation experiments seven patients underwent this scoop biopsy. RESULTS A simulation experiment proved that this technique brought much larger samples with minimal damage of the target surface. Seven patients who had been suspected of intracaval tumor thrombi underwent this procedure and confidential pathological examination without any complications. CONCLUSION This scoop biopsy procedure was thought to be helpful in obtaining large samples safely.
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Affiliation(s)
- K Kishi
- Department of Radiology, Wakayama Medical College, Japan
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Yoshioka H, Sato M, Sonomura T, Terada M, Kishi K, Yoshikawa A. Factors associated with survival exceeding 5 years after transcatheter arterial embolization for hepatocellular carcinoma. Semin Oncol 1997; 24:S6-29-S6-37. [PMID: 9151914] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
During the period between April 1981 and March 1988, 232 consecutive patients underwent transcatheter arterial embolization (TAE) for hepatocellular carcinoma at the Department of Radiology, Wakayama Medical College. A > or = 5-year course calculated from the time of the initial TAE was able to be confirmed in 216 patients, who became the subjects of this study. Five-year survival rates were calculated by the direct method, while the clinical features existing at the time of the initial therapy and the clinical course of patients surviving > or = 5 years were studied. The 5-year survival rate was 6.0%. Comparison of the patients dying within 1 year and the patients surviving for > or = 5 years revealed differences in the severity of liver cirrhosis and the tumor type. The long-term survivors tended to have low serum alpha-fetoprotein values. The clinical picture of the patients surviving > or = 5 years after TAE was characterized by relatively mild liver cirrhosis (Child's class A or B), a serum alpha-fetoprotein value of < or = 1,500 ng/dL, relatively small nodular-type tumors with a maximum main tumor diameter of < or = 5.5 cm, a tumor-occupying rate of less than 20%, and absence of portal vein involvement by the tumor. There were patients in whom a relatively small number of TAE sessions was effective in controlling the tumor for a prolonged period, with the patients then dying of causes unrelated to the tumor, as well as patients in whom proliferation of the tumor was controlled by numerous applications of transcatheter therapy, resulting in > or = 5-year survival but with eventual death due to the tumor. Transcatheter arterial embolization makes a major contribution to achieving long-term survival of > or = 5 years in patients with hepatocellular carcinoma.
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Affiliation(s)
- H Yoshioka
- Department of Radiology, Wakayama Medical College, Wakayama City, Japan
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Kimura M, Sato M, Kawai N, Tanihata H, Horihata K, Shioyama Y, Sonomura T, Yoshikawa A, Kishi K, Terada M, Yamada R. [Evaluation of hepatic encephalopathy and portal hemodynamics by Doppler ultrasonography after a transjugular intrahepatic portosystemic shunt]. Nihon Igaku Hoshasen Gakkai Zasshi 1997; 57:233-7. [PMID: 9164110] [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] [Indexed: 02/04/2023]
Abstract
TIPS (transjugular intrahepatic portosystemic shunt) is an efficacious treatment for esophagogastric varices, ascites and hypertensive gastrointestinal vasculopathy associated with portal hypertension. The main complication after the procedure is hepatic encephalopathy. We tried to elucidate the correlation between hepatic encephalopathy and changes in portal hemodynamics after TIPS, based on observation by Doppler ultrasonography. We carried out Doppler ultrasonography in 28 cases of TIPS to assess hepatopetal and hepatofugal blood flow in the right and left portal branches. Hepatic encephalopathy occurred after TIPS in 9 cases out of 28 (32%), and new onset of disease was observed in 6 of 9. Doppler ultrasonography revealed hepatofugal blood flow in both right and left portal branches in 6 cases, 5 of which showed encephalopathy. Hepatopetal blood flow of the right and left portal branches was observed in 17 of 28 cases after TIPS. Hepatic encephalopathy occurred in only 2 of 17 cases. The changes in portal vein hemodynamics after TIPS were investigated by color Doppler ultrasonography, which were considered to be very useful for prediction of hepatic encephalopathy and indication of medical treatment to prevent the occurrence of this disease.
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Affiliation(s)
- M Kimura
- Department of Radiology, Wakayama Medical College
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