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Maesawa S, Yokoyama T, Sakanoue W, Yamamoto Y, Hirakawa M, Shiraishi H, Sato K, Saino T. ADP-mediated Modulation of Intracellular Calcium Responses in Chromaffin Cells: The Role of Ectonucleoside Triphosphate Diphosphohydrolase 2 on Rat Adrenal Medulla Function. J Histochem Cytochem 2024; 72:41-60. [PMID: 38158780 PMCID: PMC10795562 DOI: 10.1369/00221554231221872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024] Open
Abstract
The present study investigated the localization and the adenosine 5'-triphosphate (ATP)-degrading function of the plasma membrane-bound ecto-nucleotidase, ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2), in the rat adrenal medulla. The effect of ATP degradation product, adenosine 5'-diphosphate (ADP), on carbachol (CCh)-induced intracellular Ca2+ ([Ca2+]i) responses in adrenal chromaffin cells was examined using calcium imaging. NTPDase2-immunoreactive cells were distributed between chromaffin cells. NTPDase2-immunoreactive cells were immunoreactive for glial fibrillary acidic protein and S100B, suggesting that they were sustentacular cells. NTPDase2-immunoreactive cells surrounded chromaffin cells immunoreactive for vesicular nucleotide transporter and P2Y12 ADP-selective purinoceptors. In ATP bioluminescence assays using adrenal medullary slices, ATP was rapidly degraded and its degradation was attenuated by the NTPDase inhibitors sodium polyoxotungstate (POM-1) and 6-N, N-diethyl-d-β,γ-dibromomethylene ATP (ARL67156). ADP inhibited CCh-induced [Ca2+]i increases of chromaffin cells in adrenal medullary slices. The inhibition of CCh-induced [Ca2+]i increases by ADP was blocked by the P2Y12 purinoceptor antagonist AZD1283. CCh-induced [Ca2+]i increases were also inhibited by the P2Y1, P2Y12, and P2Y13 purinoceptor agonist 2-methylthioadenosine diphosphate trisodium (2MeSADP), in combination with the P2Y1 purinoceptor antagonist MRS2179. These results suggest that sustentacular cells express NTPDase2 to degrade ATP released from adrenal chromaffin cells, and ADP modulates the excitability of chromaffin cells via P2Y12 purinoceptors to regulate catecholamine release during preganglionic sympathetic stimuli. (J Histochem Cytochem 72: 41-60, 2024).
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Affiliation(s)
- Satsuki Maesawa
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Takuya Yokoyama
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Wakana Sakanoue
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Hirohisa Shiraishi
- Division of Pharmaceutical Education, Department of Clinical Pharmacy, School of Pharmacy, Iwate Medical University, Yahaba, Japan
| | - Kenichi Sato
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Yokoyama T, Hirakawa M, Mochizuki K, Suzuki T, Nakajima K, Saino T. Distribution of P2X3 purinoceptor-immunoreactive sensory nerve endings in the carotid body of Japanese macaque (Macaca fuscata). Anat Sci Int 2024; 99:68-74. [PMID: 37410337 DOI: 10.1007/s12565-023-00735-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
In the carotid body of laboratory rodents, adenosine 5'-triphosphate (ATP)-mediated transmission is regarded as critical for transmission from chemoreceptor type I cells to P2X3 purinoceptor-expressing sensory nerve endings. The present study investigated the distribution of P2X3-immunoreactive sensory nerve endings in the carotid body of the adult male Japanese monkey (Macaca fuscata) using multilabeling immunofluorescence. Immunoreactivity for P2X3 was detected in nerve endings associated with chemoreceptor type I cells immunoreactive for synaptophysin. Spherical or flattened terminal parts of P2X3-immunoreactive nerve endings were in close apposition to the perinuclear cytoplasm of synaptophysin-immunoreactive type I cells. Immunoreactivity for ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2), which hydrolyzes extracellular ATP, was localized in the cell body and cytoplasmic processes of S100B-immunoreactive cells. NTPDase2-immunoreactive cells surrounded P2X3-immunoreactive terminal parts and synaptophysin-immunoreactive type I cells, but did not intrude into attachment surfaces between terminal parts and type I cells. These results suggest ATP-mediated transmission between type I cells and sensory nerve endings in the carotid body of the Japanese monkey, as well as those of rodents.
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Affiliation(s)
- Takuya Yokoyama
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, 18-8 Ueda 3-Chome, Morioka, Iwate, 020-8550, Japan.
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Kei Mochizuki
- Department of Physiology (Integrative Physiology), Iwate Medical University, Yahaba, Japan
| | - Takashi Suzuki
- Department of Physiology (Integrative Physiology), Iwate Medical University, Yahaba, Japan
| | - Katsumi Nakajima
- Department of Physiology (Integrative Physiology), Iwate Medical University, Yahaba, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Yokoyama T, Ito M, Yamamoto Y, Hirakawa M, Sakanoue W, Sato K, Saino T. Immunolocalization of vesicular glutamate transporter 2 and exocytosis-related proteins in afferent nerve endings innervating taste buds in the rat incisive papilla. Anat Histol Embryol 2023. [PMID: 36825501 DOI: 10.1111/ahe.12911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/17/2023] [Accepted: 02/07/2023] [Indexed: 02/25/2023]
Abstract
The present study aimed to investigate the immunolocalization of vesicular glutamate transporter (VGLUT) 1 and 2, and proteins associated with exocytosis, i.e., core components of the soluble N-ethylmaleimide-sensitive factor attachment protein receptor complex (synaptosomal-associated protein of 25 kDa, syntaxin 1, and vesicle-associated membrane protein 2) and synaptotagmin-1 (Syt1), in incisive papillary taste buds of rats using double-indirect immunofluorescence. No VGLUT1 immunoreactivity was observed, whereas VGLUT2-immunoreactive punctate products were closely associated with guanine nucleotide-binding protein G(t) subunit α3-immmunoreactive cells in taste buds. VGLUT2 was immunolocalized in P2X3 purinoceptor-expressing afferent nerve endings. Synaptosomal-associated protein of 25 kDa, syntaxin 1, and vesicle-associated membrane protein 2 were immunolocalized in nerve endings containing VGLUT2-immunoreactive products as well as a few cells in taste buds. VGLUT2 was co-immunolocalized in some intragemmal nerve endings immunoreactive for Syt1, a calcium sensor implicated in vesicle membrane fusion. The present results suggest that afferent nerve endings innervating incisive taste buds release glutamate by exocytosis to modulate taste cell function.
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Affiliation(s)
- Takuya Yokoyama
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Motoi Ito
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Wakana Sakanoue
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Kenichi Sato
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Sakanoue W, Yokoyama T, Hirakawa M, Maesawa S, Sato K, Saino T. 3-Iodothyronamine, a trace amine-associated receptor agonist, regulates intracellular Ca2+ increases via CaMK II through Epac2 in rat cerebral arterioles. Biomed Res 2023; 44:219-232. [PMID: 37779034 DOI: 10.2220/biomedres.44.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Trace amines (TAs) in the nervous system bind to TA-associated receptors (TAARs) and are involved in the regulation of monoaminergic functions. Among TAAR subtypes, TAAR1 has been implicated in the development of neurological disorders, such as schizophrenia. The present study investigated the effects of the TAAR1 agonist, 3-iodothyronamine (T1AM) on cerebral arterioles using fluctuations in the intracellular concentration of Ca2+ ([Ca2+]i) as an index of contractile responses. In cerebral arterioles, most of the TAAR agonists did not increase [Ca2+]i, while only T1AM elevated [Ca2+]i in vascular smooth muscle cells. This increase involved extracellular Ca2+ influx through T-type Ca2+ channels and inositol trisphosphate- and ryanodine-receptor-mediated Ca2+ release from intracellular stores. The inhibition of the cAMP sensor, exchange protein directly activated by cAMP (Epac) 2, and calmodulin kinase (CaMK) II strongly inhibited Ca2+ elevations. The present study revealed that T1AM acted not only on the TAAR1 receptor as previously suggested, but also on other G-protein coupled receptors and/or signal transduction systems to increase intracellular Ca2+ in cerebral arteriole smooth muscle cells. These results suggest that when using T1AM in clinical practice, attention should be paid to the early rise in blood pressure.
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Affiliation(s)
- Wakana Sakanoue
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Takuya Yokoyama
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Satsuki Maesawa
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Kenichi Sato
- Division of Dental Anesthesiology, Department of Reconstructive Oral and Maxillofacial Surgery, School of Dentistry, Iwate Medical University, Yahaba, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Ito M, Yokoyama T, Hirakawa M, Yamamoto Y, Sakanoue W, Sato K, Saino T. Morphology and chemical characteristics of taste buds associated with P2X3-immunoreactive afferent nerve endings in the rat incisive papilla. J Anat 2022; 240:688-699. [PMID: 34719779 PMCID: PMC8930809 DOI: 10.1111/joa.13583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/16/2021] [Accepted: 10/22/2021] [Indexed: 11/30/2022] Open
Abstract
The present study investigated the cellular components and afferent innervations of taste buds in the rat incisive papilla by immunohistochemistry using confocal scanning laser microscopy. Taste buds containing guanine nucleotide-binding protein G(t), subunit α3 (GNAT3)-imunoreactive cells were densely distributed in the lateral wall of incisive papilla forming the opening of nasoincisor ducts. GNAT3-immunoreactive cells in the taste buds were slender in shape and the tips of apical processes gathered at one point at the surface of the epithelium. The number of taste buds was 56.8 ± 4.5 in the incisive papilla. The incisive taste buds also contained ectonucleoside triphosphate diphosphohydrolase 2-immunoreactive cells and synaptotagmin-1-immunoreactive cells in addition to GNAT3-immunoreactive cells. Furthermore, GNAT3-immunoreactive cells were immunoreactive to taste transduction molecules such as phospholipase C, β2-subunit, and inositol 1,4,5-trisphosphate receptor, type 3. P2X3-immunoreactive subepithelial nerve fibers intruded into the taste buds and terminated with hederiform or calix-like nerve endings attached to GNAT3-immunoreactive cells and synaptosomal-associated protein, 25 kDa-immunoreactive cells. Some P2X3-immunoreactive endings were also weakly immunoreactive for P2X2. Furthermore, a retrograde tracing method using fast blue dye indicated that most of the P2X3-immunoreactive nerve endings originated from the geniculate ganglia (GG) of the facial nerve. These results suggest that incisive taste buds are morphologically and cellularly homologous to lingual taste buds and are innervated by P2X3-immunoreactive nerve endings derived from the GG. The incisive papilla may be the palatal taste papilla that transmits chemosensory information in the oral cavity to the GG via P2X3-immunoreactive afferent nerve endings.
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Affiliation(s)
- Motoi Ito
- Division of Dental AnesthesiologyDepartment of Reconstructive Oral and Maxillofacial SurgerySchool of DentistryIwate Medical UniversityYahabaJapan
| | - Takuya Yokoyama
- Department of Anatomy (Cell Biology)Iwate Medical UniversityYahabaJapan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology)Iwate Medical UniversityYahabaJapan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell BiologyFaculty of AgricultureIwate UniversityMoriokaJapan
| | - Wakana Sakanoue
- Division of Dental AnesthesiologyDepartment of Reconstructive Oral and Maxillofacial SurgerySchool of DentistryIwate Medical UniversityYahabaJapan
| | - Kenichi Sato
- Division of Dental AnesthesiologyDepartment of Reconstructive Oral and Maxillofacial SurgerySchool of DentistryIwate Medical UniversityYahabaJapan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology)Iwate Medical UniversityYahabaJapan
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Hirakawa M, Yokoyama T, Yamamoto Y, Saino T. Morphology of P2X3-immunoreactive basket-like afferent nerve endings surrounding serosal ganglia and close relationship with vesicular nucleotide transporter-immunoreactive nerve fibers in the rat gastric antrum. J Comp Neurol 2021; 529:3866-3881. [PMID: 34297862 DOI: 10.1002/cne.25219] [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: 05/26/2021] [Revised: 07/05/2021] [Accepted: 07/16/2021] [Indexed: 11/11/2022]
Abstract
We previously reported P2X3 purinoceptor (P2X3)-expressing vagal afferent nerve endings with large web-like structures in the subserosal tissue of the antral lesser curvature, suggesting that these nerve endings were one of the vagal mechanoreceptors. The present study investigated the morphological relationship between P2X3-immunoreactive nerve endings and serosal ganglia in the rat gastric antrum by immunohistochemistry of whole-mount preparations using confocal scanning laser microscopy. P2X3-immunoreactive basket-like subserosal nerve endings with new morphology were distributed laterally to the gastric sling muscles in the distal antrum of the lesser curvature. Parent axons ramified into numerous nerve fibers with pleomorphic flattened structures to form basket-like nerve endings, and the parent axons were originated from large net-like structures of vagal afferent nerve endings. Basket-like nerve endings wrapped around the whole serosal ganglia, which were characterized by neurofilament 200 kDa-immunoreactive neurons with or without neuronal nitric oxide synthase immunoreactivity and S100B-immunoreactive glial cells. Furthermore, basket-like nerve endings were localized in close apposition to dopamine beta-hydroxylase-immunoreactive sympathetic nerve fibers immunoreactive for vesicular nucleotide transporter. These results suggest that P2X3-immunoreactive basket-like nerve endings associated with serosal ganglia are the specialized ending structures of vagal subserosal mechanoreceptors in order to increase the sensitivity during antral peristalsis, and are activated by ATP from sympathetic nerve fibers and/or serosal ganglia for the regulation of mechanoreceptor function.
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Affiliation(s)
- Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Takuya Yokoyama
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Yokoyama T, Yamamoto Y, Hirakawa M, Saino T. GluN2A- and GluN2B-immunoreactive type I cells attached to vesicular glutamate transporter 2-immunoreactive afferent nerve terminals of the rat carotid body. Histochem Cell Biol 2021; 155:719-726. [PMID: 33550485 DOI: 10.1007/s00418-021-01970-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2021] [Indexed: 11/25/2022]
Abstract
We previously reported the immunoreactivity for the vesicular glutamate transporter 2 (VGLUT2) in afferent nerve terminals attached to chemoreceptor type I cells of the carotid body (CB), suggesting that glutamate is released from afferent terminals to stimulate these cells. In the present study, we examined the immunoreactivity for the glutamate-binding subunits of N-methyl-D-aspartate (NMDA) receptors, GluN2A and GluN2B in the rat CB, and the immunohistochemical relationships between these subunits and VGLUT2. Immunoreactivities for GluN2A and GluN2B were predominant in a subpopulation of tyrosine hydroxylase-immunoreactive type I cells rather than those of dopamine beta-hydroxylase-immunoreactive cells. Punctate VGLUT2-immunoreactive products were attached to GluN2A- and GluN2B-immunoreactive type I cells. Bassoon-immunoreactive products were localized between VGLUT2-immunoreactive puncta and type I cells immunoreactive for GluN2A and GluN2B. These results suggest that afferent nerve terminals release glutamate by exocytosis to modulate chemosensory activity of a subpopulation of type I cells via GluN2A- and GluN2B subunits-containing NMDA receptors.
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Affiliation(s)
- Takuya Yokoyama
- Department of Anatomy (Cell Biology), Iwate Medical University, 1-1-1 Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan.
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, 1-1-1 Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, 1-1-1 Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
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Hirakawa M, Yokoyama T, Yamamoto Y, Saino T. Distribution and morphology of P2X3-immunoreactive subserosal afferent nerve endings in the rat gastric antrum. J Comp Neurol 2020; 529:2014-2028. [PMID: 33190284 DOI: 10.1002/cne.25069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/27/2020] [Accepted: 11/09/2020] [Indexed: 12/15/2022]
Abstract
The present study investigated the morphological characteristics of subserosal afferent nerve endings with immunoreactivity for the P2X3 purinoceptor (P2X3) in the rat stomach by immunohistochemistry of whole-mount preparations using confocal scanning laser microscopy. P2X3 immunoreactivity was observed in subserosal nerve endings proximal and lateral to the gastric sling muscles in the distal antrum of the lesser curvature. Parent axons ramified into several lamellar processes to form net-like complex structures that extended two-dimensionally in every direction on the surface of the longitudinal smooth muscle layer. The axon terminals in the periphery of P2X3-immunoreactive net-like structures were flat and looped or leaf-like in shape. Some net-like lamellar structures and their axon terminals with P2X3 immunoreactivity were also immunoreactive for P2X2. P2X3-immunoreactive nerve fibers forming net-like terminal structures were closely surrounded by S100B-immunoreactive terminal Schwann cells, whereas axon terminals twined around these cells and extended club-, knob-, or thread-like protrusions in the surrounding tissues. Furthermore, a retrograde tracing method using fast blue dye indicated that most of these nerve endings originated from the nodose ganglia of the vagus nerve. These results suggest that P2X3-immunoreactive subserosal nerve endings have morphological characteristics of mechanoreceptors and contribute to sensation of a mechanical deformation of the distal antral wall associated with antral peristalsis.
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Affiliation(s)
- Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba-cho, Japan
| | - Takuya Yokoyama
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba-cho, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba-cho, Japan
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Uneno Y, Sato K, Morita T, Nishimura M, Ito S, Mori M, Shimizu C, Horie Y, Hirakawa M, Nakajima TE, Tsuneto S, Muto M. Current status of integrating oncology and palliative care in Japan: a nationwide survey. BMC Palliat Care 2020; 19:12. [PMID: 31980015 PMCID: PMC6982384 DOI: 10.1186/s12904-020-0515-5] [Citation(s) in RCA: 5] [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: 10/26/2019] [Accepted: 01/13/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Palliative care (PC) is increasingly recognized as essential for oncology care, and several academic societies strongly recommend integrating oncology and palliative care (IOP) in daily practice. Similarly, the Japanese government encouraged the implementation of IOP through the Cancer Control Act of 2007; however, its detailed progress remains unclear. Therefore, this cross-sectional nationwide survey was conducted to investigate the current status and hospital executive physicians' perception of IOP. METHODS The questionnaire was developed based on IOP indicators with international consensus. It was distributed to executive physicians at all government-designated cancer hospitals (DCHs, n = 399) and matched non-DCHs (n = 478) in November 2017 and the results were compared. RESULTS In total, 269 (67.4%) DCHs and 259 (54.2%) non-DCHs responded. The number of PC resources in DCHs was significantly higher than those in non-DCHs (e.g., full-time PC physicians and nurses, 52.8% vs. 14.0%, p < 0.001; availability of outpatient PC service ≥3 days per week, 47.6% vs. 20.7%, p < 0.001). Routine symptom screening was more frequently performed in DCHs than in non-DCHs (65.1% vs. 34.7%, p < 0.001). Automatic trigger for PC referral availability was limited (e.g., referral using time trigger, 14.9% vs. 15.3%, p = 0.700). Education and research opportunities were seriously limited in both types of hospitals. Most executive physicians regarded IOP as beneficial for their patients (95.9% vs. 94.7%, p = 0.163) and were willing to facilitate an early referral to PC services (54.7% vs. 60.0%, p < 0.569); however, the majority faced challenges to increase the number of full-time PC staff, and < 30% were planning to increase the staff members. CONCLUSIONS This survey highlighted a considerable number of IOP indicators met, particularly in DCHs probably due to the government policy. Further efforts are needed to address the serious research/educational gaps.
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Affiliation(s)
- Y Uneno
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho Shogoin Sakyo-ku, Kyoto, 606-8507, Japan. .,Seirei Hospice, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
| | - K Sato
- Department of Nursing, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Morita
- Division of Supportive and Palliative Care, Seirei Mikatahara General Hospital, Hamamatsu, Japan
| | - M Nishimura
- Geriatric Health Service Facility, You-You no Sono, Hiroshima, Japan.,Department of Health Informatics, Kyoto University Graduate School of Medicine/ School of Public Health, Kyoto, Japan
| | - S Ito
- Department of Health Informatics, Kyoto University Graduate School of Medicine/ School of Public Health, Kyoto, Japan
| | - M Mori
- Palliative Care Team, Seirei Mikatahara General Hospital, Hamamatsu, Japan
| | - C Shimizu
- Department of Breast Medical Oncology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Y Horie
- Department of Clinical Oncology, St Marianna University School of Medicine, Kawasaki, Japan
| | - M Hirakawa
- Department of Clinical Oncology, St Marianna University School of Medicine, Kawasaki, Japan
| | - T E Nakajima
- Department of Clinical Oncology, St Marianna University School of Medicine, Kawasaki, Japan
| | - S Tsuneto
- Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Muto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho Shogoin Sakyo-ku, Kyoto, 606-8507, Japan
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Yokoyama T, Yamamoto Y, Hirakawa M, Kato K, Saino T. Vesicular nucleotide transporter-immunoreactive type I cells associated with P2X3-immunoreactive nerve endings in the rat carotid body. J Comp Neurol 2019; 528:1486-1501. [PMID: 31808543 DOI: 10.1002/cne.24837] [Citation(s) in RCA: 5] [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: 08/14/2019] [Revised: 11/21/2019] [Accepted: 12/02/2019] [Indexed: 12/23/2022]
Abstract
ATP is the major excitatory transmitter from chemoreceptor type I cells to sensory nerve endings in the carotid body, and has been suggested to be released by exocytosis from these cells. We investigated the mRNA expression and immunohistochemical localization of vesicular nucleotide transporter (VNUT) in the rat carotid body. RT-PCR detected mRNA expression of VNUT in extracts of the tissue. Immunoreactivity for VNUT was localized in a part of type I cells immunoreactive for synaptophysin (SYN), but not in glial-like type II cells immunoreactive for S100 and S100B. Among SYN-immunoreactive type I cells, VNUT immunoreactivity was selectively localized in the sub-population of tyrosine hydroxylase (TH)-immunorective type I cells associated with nerve endings immunoreactive for the P2X3 purinoceptor; however, it was not detected in the sub-population of type I cells immunoreactive for dopamine beta-hydroxylase. Multi-immunolabeling for VNUT, P2X3, and Bassoon revealed that Bassoon-immunoreactive products were localized in type I cells with VNUT immunoreactivity, and accumulated on the contact side of P2X3-immunoreactive nerve endings. These results revealed the selective localization of VNUT in the subpopulation of TH-immunoreactive type I cells attached to sensory nerve endings and suggested that these cells release ATP by exocytosis for chemosensory transmission in the carotid body.
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Affiliation(s)
- Takuya Yokoyama
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Faculty of Agriculture, Iwate University, Morioka, Japan
| | - Masato Hirakawa
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
| | - Kouki Kato
- Center for Laboratory Animal Science, National Defense Medical College, Tokorozawa, Japan
| | - Tomoyuki Saino
- Department of Anatomy (Cell Biology), Iwate Medical University, Yahaba, Japan
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Yokoyama T, Takemoto M, Hirakawa M, Saino T. Different immunohistochemical localization for TMEM16A and CFTR in acinar and ductal cells of rat major salivary glands and exocrine pancreas. Acta Histochem 2019; 121:50-55. [PMID: 30389171 DOI: 10.1016/j.acthis.2018.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/10/2018] [Accepted: 10/24/2018] [Indexed: 12/27/2022]
Abstract
We investigated the mRNA expression and immunohistochemical localization of Cl- channels, transmembrane member 16A (TMEM16A or anoctamin 1), and cystic fibrosis transmembrane conductance regulator (CFTR) in rat major salivary glands and exocrine pancreas. RT-PCR detected mRNA expression of TMEM16A and CFTR in the extracts of the parotid gland (PG), submandibular gland (SMG), sublingual gland (SLG), and pancreas. Immunoreactivity for TMEM16A was localized in the apical membrane of serous acinar and intercalated ductal cells in the PG and SMG as well as mucous acinar cells in the SLG; however, it was not detected in striated ductal cells of these tissues. Although striated ductal cells in the PG, SMG and SLG, and granular ductal cells in the SMG, were immunoreactive for CFTR in the luminal side, serous, mucous acinar, and intercalated ductal cells were not immunoreactive for CFTR in any of the major salivary glands. In the exocrine pancreas, immunoreactivity for TMEM16A was localized in the apical membrane of acinar cells, while immunoreactivity for CFTR was localized in the luminal side of intercalated ductal cells. These results suggest that different localization of TMEM16A and CFTR immunoreactivities reflects the respective functions of acinar and ductal cells in major salivary glands and exocrine pancreas.
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Yu U, Sato K, Morita T, Mori M, Shimizu C, Horie Y, Hirakawa M, Nakajima T, Tsuneto S, Muto M. Current status of the integration of oncology and palliative care in Japan: A nationwide survey. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy295.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Yu U, Sato K, Morita T, Mori M, Shimizu C, Horie Y, Hirakawa M, Nakajima T, Tsuneto S, Muto M. Perspectives and attitudes towards the integration of oncology and palliative care in Japan: A nationwide survey. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy295.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Mizukami T, Sunakawa Y, Arai H, Chosokabe M, Doi A, Horie Y, Hirakawa M, Saji O, Naruki S, Izawa N, Ogura T, Tsuda T, Enomoto T, Mikami S, Fujino T, Otsubo T, Nakajima T. Dynamic change of immune-related gene expression status during chemoradiotherapy in locally advanced esophageal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Nakajima R, Miyagaki T, Hirakawa M, Oka T, Takahashi N, Suga H, Yoshizaki A, Fujita H, Asano Y, Sugaya M, Sato S. Interleukin-25 is involved in cutaneous T-cell lymphoma progression by establishing a T helper 2-dominant microenvironment. Br J Dermatol 2018; 178:1373-1382. [PMID: 29238954 DOI: 10.1111/bjd.16237] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND Interleukin (IL)-25 is a member of the IL-17 family, which can promote and augment T-helper (Th) type 2 responses. The expression of IL-25 and its cognate receptor, IL-25 receptor (IL-25R), is upregulated and correlated with disease activity in Th2-associated diseases. OBJECTIVES To examine the expression and function of IL-25 in cutaneous T-cell lymphoma (CTCL). METHODS Expression and location of IL-25 in lesional skin was investigated with immunohistochemistry. The effect of various cytokines on IL-25 production from normal human epidermal keratinocytes was assessed by quantitative reverse-transcription real-time polymerase chain reaction. Serum IL-25 levels were measured by enzyme-linked immunosorbent assay. The direct effect of IL-25 on tumour cells was also examined using CTCL cell lines and peripheral blood mononuclear cells in patients with Sézary syndrome. RESULTS IL-25 expression was increased in epidermal keratinocytes in lesional skin of CTCL. Th2 cytokines, IL-4 and IL-13, and periostin induced IL-25 expression by normal human epidermal keratinocytes. Serum IL-25 levels were increased in patients with advanced CTCL and correlated with serum lactate dehydrogenase levels. MyLa cells expressed IL-25R and its expression was augmented by stimulation with IL-25. IL-25 enhanced IL-13 production from MyLa cells via phosphorylation of signal transducer and activator of transcription 6. Peripheral blood mononuclear cells from one patient with Sézary syndrome expressed IL-25R and showed increase of IL-13 production by IL-25. CONCLUSIONS Th2 cytokines highly expressed in CTCL lesional skin induce IL-25 production by epidermal keratinocytes, which may, in turn, lead to formation of a Th2-dominant microenvironment through the direct induction of IL-13 by tumour cells.
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Affiliation(s)
- R Nakajima
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - T Miyagaki
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - M Hirakawa
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - T Oka
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - N Takahashi
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - H Suga
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - A Yoshizaki
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - H Fujita
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Y Asano
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - M Sugaya
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - S Sato
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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Sato Y, Ohnuma H, Okamoto K, Miyamoto H, Hirakawa M, Uemura N, Kikuchi S, Sagawa T, Fujikawa K, Takahashi Y, Minami S, Okuda T, Takahashi M, Kato J, Takayama T. Phase II study of modified docetaxel, cisplatin and S-1 (mDCS) combination chemotherapy in patients with unresectable metastatic gastric cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.064] [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: 11/12/2022] Open
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17
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Okubo M, Satoh YI, Hirakawa M, Sasaki K, Masu K, J McHonde G, Ikeda-Kurosawa C, Kurosaka D, Saino T. Different effect of serotonin on intracellular calcium ion dynamics in the smooth muscle cells between rat posterior ciliary artery and vorticose vein. Biomed Res 2017; 37:101-15. [PMID: 27108880 DOI: 10.2220/biomedres.37.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
5-hydroxytriptamine (5-HT: serotonin) is an important transmitter that causes vessel constriction, although few studies have examined the effect of 5-HT on venous smooth muscles. The intracellular Ca(2+) concentration ([Ca(2+)]i) plays an essential role in stimulus-response coupling in numerous tissue/cells including vascular smooth muscle cells. The present study was performed to examine whether differences between arteries and veins in the response to 5-HT can be detected under confocal microscope with respect to [Ca(2+)]i dynamics. In posterior ciliary arteries of rats, 5-HT induced a [Ca(2+)]i increase. The 5-HT-induced responses were caused by both Ca(2+) influx and mobilization. Agonist and antagonist experiments revealed that arterial smooth muscles possess 5-HT1a, 1b, 2 (Gprotein-coupled type) and 5-HT3 (ion channel type) receptors, and that 5-HT2 in particular plays a major role in these responses. For vorticose veins, the 5-HT-induced responses were also caused by both Ca(2+) influx and mobilization. However, the cAMP dependent pathway (5-HT4-7) was found to be significant in vasocontraction with respect to 5-HT in these vessels. Thus, Ca(2+) mobilization was induced by 5-HT2 and 5-HT4-7 in a vessel-dependent manner, whereas Ca(2+) influx universally was induced by 5-HT3. These results indicate that the posterior ciliary arteries and vorticose veins in the same tissue might differ greatly in their responses to stimulus.
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Affiliation(s)
- Masatoshi Okubo
- Department of Anatomy (Cell Biology), Iwate Medical University
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18
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Sato Y, Ohnuma H, Hirakawa M, Kikuch S, Takahashi M, Okamoto T, Tsuji Y, Okita K, Furuhata T, Takemasa I, Kato J. A triplet combination with oxaliplatin/capecitabine/irinotecan (XELOXIRI) plus cetuximab (Cmab) as a first-line therapy in wild-type KRAS, metastatic colorectal cancer: a dose escalating study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw370.44] [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: 11/14/2022] Open
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19
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Sato Y, Ohnuma H, Hirakawa M, Osuga T, Okagawa Y, Sagawa T, Takahashi Y, Takahashi M, Maeda M, Katsuki S, Hirayama M, Kikuchi S, Murase K, Takada K, Sato T, Miyanishi K, Kobune M, Takimoto R, Takayama T, Kato J. 2298 Docetaxel, cisplatin and S-1 (DCS) combination chemotherapy for gastric cancer patients with peritoneal metastasis: a multi-institute retrospective study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31214-x] [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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20
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Horie Y, Mori K, Kyomori C, Izawa N, Taniyama T, Hirakawa M, Ogura T, Tsuda T, Nakajima T, Boku N. 1504 Impact of worsening in patient reported symptomatic adverse events (AEs) on deterioration of daily assessed quality of life(QOL) in cancer patients receiving initial chemotherapy; prospective exploratory study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30595-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Atsumi K, Nakamura K, Arimura H, Hirayama R, Sasaki T, Ohga S, Yoshitake T, Sakamoto K, Hirakawa M, Honda H. Utility of an Artificial Neural Network for Prediction of Survival in Patients With Esophageal Cancer Treated With Radiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1110] [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: 10/24/2022]
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22
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Sato Y, Ohnuma H, Takayama T, Sagawa T, Hirakawa M, Sato Y, Takahashi Y, Takahashi M, Maeda M, Katsuki S, Hirayama M, Takada K, Hayashi T, Sato T, Miyanishi K, Kobune M, Takimoto R, Nobuoka T, Hirata K, Kato J. Treatment Strategy for Conversion Therapy Using Docetaxel/Cddp/S-1 (Dcs) or Dcs-Trastuzumab (Dcs-T) According to Her2 Status in Metastatic Gastric Cancer Patients. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.41] [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: 11/14/2022] Open
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23
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Terashima K, Nakamura K, Shioyama Y, Sasaki T, Ohga S, Nonoshita T, Yoshitake T, Atsumi K, Asai K, Hirakawa M, Anai S, Yoshikawa H, Honda H. Can a Belly Board Reduce Respiratory-Induced Prostate Motion in the Prone Position? — Assessed by Cine-Magnetic Resonance Imaging. Technol Cancer Res Treat 2013; 12:447-53. [DOI: 10.7785/tcrt.2012.500334] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The purpose of this study is to evaluate the real-time respiratory motion of the prostate and surrounding tissues/organs in the supine and prone positions and to investigate, using cine-MRI, whether a belly board can reduce respiratory-induced motion in the prone position. Cine-MRI scans were made of 13 volunteers in the supine and prone positions on a flat board and in two different prone positions using a belly board. Images in cine mode were recorded for 20 seconds. For each session, the points of interest (POIs) were located at the apex, base, mid-anterior surface and mid-posterior surface of the prostate; the tip of the seminal vesicle; the pubic symphysis; and the sacrum. The maximum range and standard deviation (SD) of the displacement from the mean value were calculated. The SDs for each of the four different positions were compared using a paired t-test. Respiratory-induced prostate motion was significantly larger in the prone position than in the supine position. However, when a belly board was used in the prone position, motion in the prostate and surrounding tissues/organs was significantly reduced. There were no significant differences between the two different positions using a belly board in any of the POIs.
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Affiliation(s)
- K. Terashima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Nakamura
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y. Shioyama
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T. Sasaki
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S. Ohga
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T. Nonoshita
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T. Yoshitake
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Atsumi
- Department of Radiology, Kyushu University Hospital at Beppu, Beppu, Japan
| | - K. Asai
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Hirakawa
- Department of Radiology, Kyushu University Hospital at Beppu, Beppu, Japan
| | - S. Anai
- Department of Radiology, Kyushu University Hospital at Beppu, Beppu, Japan
| | - H. Yoshikawa
- Department of Radiology, Kyushu University Hospital at Beppu, Beppu, Japan
| | - H. Honda
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Atsumi K, Nakamura K, Shioyama Y, Abe K, Sasaki T, Ohga S, Yoshitake T, Sakamoto K, Hirakawa M, Honda H. Prognostic Value of FDG-PET in Definitive Chemoradiation Therapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Wada S, Owaki T, Hirakawa M, Nishino T, Shimozono K, Yamada T. Auditory middle latency responses (A-MLR) in patients with dementia: A relationship between A-MLR and temporal lobe atrophy. Int J Psychophysiol 2012. [DOI: 10.1016/j.ijpsycho.2012.07.019] [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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26
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Miyasaka M, Hirakawa M, Nakamura K, Tanaka F, Mimori K, Mori M, Honda H. The endoscopic diagnosis of nonerosive reflux disease using flexible spectral imaging color enhancement image: a feasibility trial. Dis Esophagus 2011; 24:395-400. [PMID: 21848816 DOI: 10.1111/j.1442-2050.2010.01166.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nonerosive reflux disease (NERD) is classified into grade M (minimal change, endoscopically; erythema without sharp demarcation, whitish turbidity, and/or invisibility of vessels due to these findings) and grade N (normal) in the modified Los Angeles classification system in Japan. However, the classification of grades M and N NERD is not included in the original Los Angeles system because interobserver agreement for the conventional endoscopic diagnosis of grades M or N NERD is poor. Flexible spectral imaging color enhancement (FICE) is a virtual chromoendoscopy technique that enhances mucosal and vascular visibility. The aim of this study is to evaluate whether the endoscopic diagnosis of grades M or N NERD using FICE images is feasible. Between April 2006 and May 2008, 26 NERD patients and 31 controls were enrolled in the present study. First, an experienced endoscopist assessed the color pattern of minimal change in FICE images using conventional endoscopic images and FICE images side-by-side and comparing the proportion of minimal change between the two groups. Second, three blinded endoscopists assessed the presence or absence of minimal change in both groups using conventional endoscopic images and FICE images separately. Intraobserver variability was compared using McNemar's test, and interobserver agreement was described using the kappa value. Minimal changes, such as erythema and whitish turbidity, which were detected using conventional endoscopic images, showed up as navy blue and pink-white, respectively, in color using FICE images in the present FICE mode. The NERD group had a higher proportion of minimal change, compared with the control group (77% and 48%, respectively) (P= 0.033). In all three readers, the detection rates of minimal change using FICE images were greater than those using conventional endoscopic images (P= 0.025, <0.0001, and 0.034 for readers A, B, and C, respectively). The kappa values for all pairs of three readers using FICE images were between 0.683 and 0.812, while those using conventional endoscopic images were between 0.364 and 0.624. Thus, the endoscopic diagnosis of grades M or N NERD using FICE images is feasible and may improve interobserver agreement.
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Affiliation(s)
- M Miyasaka
- Department of Radiology, Kyushu University Hospital at Beppu, Oita, Japan.
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27
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Toyonaga J, Tsuruya K, Ikeda H, Noguchi H, Yotsueda H, Fujisaki K, Hirakawa M, Taniguchi M, Masutani K, Iida M. Spironolactone inhibits hyperglycemia-induced podocyte injury by attenuating ROS production. Nephrol Dial Transplant 2011; 26:2475-2484. [DOI: 10.1093/ndt/gfq750] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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28
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Ohnuma H, Sato Y, Takayama T, Sagawa T, Hirakawa M, Harada K, Nobuoka T, Hirata K, Sato Y, Takahashi Y, Katsuki S, Takahashi S, Hirayama M, Takahashi M, Maeda M, Sato T, Miyanishi K, Kobune M, Takimoto R, Kato J. A phase II study of neoadjuvant combination chemotherapy with docetaxel, cisplatin, and S-1 for locally advanced gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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29
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Nagai Y, Wakayama A, Suzuki S, Asato K, Hirakawa M, Kudaka W, Inamine M, Aoki Y. Metastatic placental site trophoblastic tumour successfully treated with hysterectomy and EMA/CO chemotherapy. J OBSTET GYNAECOL 2011; 31:99-101. [PMID: 21281015 DOI: 10.3109/01443615.2010.522272] [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: 11/13/2022]
Affiliation(s)
- Y Nagai
- Department of Obstetrics and Gynecology, University of the Ryukyus, Okinawa, Japan
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30
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Kasuya G, Ogawa K, Nagai Y, Shiraishi M, Hirakawa M, Toita T, Kakinohana Y, Nishimaki T, Aoki Y, Murayama S. Risk Factors of Severe Late Complications in Patients with Uterine Cancer Treated with Postoperative Radiotherapy. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.989] [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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31
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Nakamura K, Anai S, Hirakawa M, Miyasaka M, Yoshikawa H, Sasaki T, Shioyama Y, Ohga S, Terashima K, Honda H. Respiratory-induced Prostate Motion in the Supine and Prone Positions as Assessed by Cine-magnetic Resonance Imaging. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.911] [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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32
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Hirakawa M, Nagai Y, Toita T, Kudaka W, Inamine M, Ogawa K, Murayama S, Aoki Y. High-risk group for locoregional recurrence in patients with stage IB-IIB squamous cell carcinoma of the cervix treated with concurrent chemoradiotherapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15519] [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: 11/20/2022] Open
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33
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Hirakawa M, Ikeda K, Akuta N, Kawamura Y, Hosaka T, Kobayashi M, Suzuki F, Suzuki Y, Arase Y, Kumada H. Effect of IFN therapy and amino acid substitutions in the hepatitis C virus (HCV) core region on hepatocarcinogenesis in HCV-related cirrhotic patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.4009] [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: 11/20/2022] Open
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34
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Tsuda T, Watanabe Y, Hirakawa M, Hosoya K, Izawa N, Inaba H, Matsumoto N, Toyota M, Itoh F. Identification of DNA methylation changes in esophageal cancer before/after chemoradiation therapy using a MCA-microarray and bisulfate pyrosequencing. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10550] [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: 11/20/2022] Open
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35
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Kawamura Y, Ikeda K, Hirakawa M, Hosaka T, Akuta N, Kobayashi M, Saitoh S, Suzuki F, Suzuki Y, Kumada H. A new classification of dynamic CT images predictive of malignant characteristics of hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14598] [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: 11/20/2022] Open
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36
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Tajima T, Yoshimitsu K, Irie H, Nishie A, Hirakawa M, Ishigami K, Ushijima Y, Okamoto D, Honda H. Hepatic falciform ligament artery in patients with chronic liver diseases: detection on computed tomography hepatic arteriography. Acta Radiol 2009; 50:743-51. [PMID: 19533449 DOI: 10.1080/02841850903036280] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The detection rate of hepatic falciform ligament artery (FLA) has been reported as ranging from 2-25%. The rate of FLA on laparotomy, however, is reported to be higher, at 68%. PURPOSE To compare the detection rate of FLA on computed tomography hepatic arteriography (CTHA) with that on angiography and dynamic CT, and to clarify the clinical significance of FLA in patients with chronic liver disease. MATERIAL AND METHODS 126 consecutive patients underwent CTHA angiography and dynamic CT to evaluate suspected liver tumors. Liver function was classified as follows: normal, n=5; Child-Pugh class A, n=94; B, n=21; and C, n=6. All CT images were obtained using multidetector (MDCT) scanners (Aquilion; Toshiba, Tokyo, Japan). For CTHA, CT images were obtained during contrast material injection through the left hepatic, proper, or common hepatic artery. On CT, FLAs were retrospectively identified within the hepatic falciform ligament and the hepatic round ligament by the paging method on a workstation (TWS-5000; Toshiba, Tokyo, Japan). The detection rates were compared among the three modalities (hepatic arterial phase of dynamic CT, CTHA, and angiography). The calibers of FLA were also correlated with the hepatic function of the patients. RESULTS The detection rates of FLA by angiography, dynamic CT, and CTHA were 37% (47/126), 10% (13/126), and 77% (97/126), respectively. The calibers of FLA increased as the hepatic function deteriorated (P=0.001). CONCLUSION The detection rates of FLA with CTHA are far higher than those with angiography and dynamic CT. Careful interpretation with recognition of FLA on CTHA images is important, as inadvertent embolization or chemotherapeutic infusion of the FLA may result in supraumbilical skin rash.
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Affiliation(s)
- T. Tajima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Yoshimitsu
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H. Irie
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - A. Nishie
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Hirakawa
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Ishigami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y. Ushijima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - D. Okamoto
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H. Honda
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Tajima T, Yoshimitsu K, Irie H, Nishie A, Hirakawa M, Ishigami K, Ushijima Y, Okamoto D, Honda H. Microcoil embolization through a downsized coaxial catheter system: an experimental study. Acta Radiol 2009; 50:469-73. [PMID: 19455446 DOI: 10.1080/02841850902845848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Most of the recently developed microcatheters for abdominal angiography still have large diameters at their trailing ends, and thus cannot be used for microcoil embolization in combination with a 3-French (F) system. PURPOSE To evaluate the in vitro passage of microcoils through a newly developed 2-F microcatheter (Meister Cath Superselective Plus, MC6) that is compatible with a downsized coaxial catheter system (3-F system) in an experimental study. MATERIAL AND METHODS We evaluated the passage of microcoils through MC6 within a blood vessel model using the saline flush technique. Six types of microcoils and 17 size variations (maximal curled diameter 2-10 mm, total length 20-140 mm) were used. We evaluated the passage and post-deployment shape of the microcoils as well as the volume of saline required to flush them. RESULTS In the experimental study, all microcoils passed through the MC6 and deployed in a satisfactory manner without catheter occlusion. The mean volumes of saline required to flush the TORNADO (n=1), Reverse TORNADO (n=6), HILAL (n=1), Micronester (n=3), VortX (n=4), and C-Stopper Coil (n=2) were 0.7 ml, 0.58+/-0.20 ml, 0.5 ml, 0.57+/-0.058 ml, 3.5+/-1.5 ml, and 0.70+/-0.14 ml, respectively. There was a statistically significant difference in the mean volume of saline required between the VortX and Reverse TORNADO (P=0.029), and between the VortX and C-Stopper Coil (P=0.031). The VortX required the greatest volume of saline. CONCLUSION Microcoil embolization through a 3-F system appears to be feasible for the coils examined in this study.
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Affiliation(s)
- T. Tajima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Yoshimitsu
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H. Irie
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - A. Nishie
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Hirakawa
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K. Ishigami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y. Ushijima
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - D. Okamoto
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H. Honda
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Aoki Y, Inamine M, Hirakawa M, Kudaka W, Nagai Y. Heparanase expression and angiogenesis in endometrial cancer: Analyses of RT-PCR and immunohistochemistry. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.5535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5535 Background: The human heparanase has been shown to function in tumor progression, metastatic spread, and tumor angiogenesis. The aim of the present study was to assess heparanase expression in endometrial cancer in correlation with neovascularization and clinicopathological factors.Methods: Fifty-two endometrial cancers were obtained from previously untreated patients (median age, 56 years; range, 35–80 years). The expression of heparanase mRNA was evaluated using a semi-quantitative reverse transcriptase-polymerase chain reaction and immunohistochemical staining (IHC) with anti-heparanase polyclonal antibody. This antibody was raised by immunizing a rabbit with a peptide containing the amino acid residues from 238 to 250 of the Heparanase. Tumor angiogenesis was assessed using microvessel counting. The Mann-Whitney U test, one factor ANOVA test, and Spearman's test were used to determine the relationship between heparanase expression, microvessel density, and clinicopathological parameters. Results: The expression of heparanase mRNA was detected in 26 of 52 (50%) endometrial cancers, and was significantly correlated with FIGO stage IIIc (p = 0.0075), the presence of lymph-vascular space involvement (LVSI) (p = 0.0041), lymph node metastasis (LNM) (p = 0.0049), and histological tumor grade (p = 0.003). IHC showed that the heparanase was expressed in 23 of 52 (44.2%) endometrial cancers, which was significantly related to LVSI (p = 0.0028), depth of myometrial invasion (p = 0.0026), and histological tumor grade (p = 0.0135). Microvessel density was also associated with FIGO stage IIIc (p = 0.027), LVSI (p = 0.001), LNM (p = 0.038), ovarian metastasis (p = 0.03) and histological tumor grade (p = 0.003). Moreover, we found a strong positive correlation between heparanase expression and microvessel density (r2 = 0.475, p = 0.0001). Conclusions: These results suggest that the expression of heparanase can promote tumor angiogenesis and develop metastasis in endometrial cancer. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Aoki
- University of the Ryukyus, Nishihara, Japan
| | - M. Inamine
- University of the Ryukyus, Nishihara, Japan
| | | | - W. Kudaka
- University of the Ryukyus, Nishihara, Japan
| | - Y. Nagai
- University of the Ryukyus, Nishihara, Japan
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Inamine M, Nagai Y, Hirakawa M, Mekaru K, Yagi C, Masamoto H, Aoki Y. Heparanase expression in endometrial cancer: analysis of immunohistochemistry. J OBSTET GYNAECOL 2009; 28:634-7. [PMID: 19003663 DOI: 10.1080/01443610802323542] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The human enzyme heparanase has been shown to function in tumour progression, metastatic spread and tumour angiogenesis. The aim of the present study was to assess heparanase expression assessed by immunohistochemical staining (IHC) in endometrial cancer in correlation with clinicopathological factors. A total of 52 endometrial cancers were obtained from previously untreated patients (median age, 56 years, range, 35-80 years). The expression of heparanase was evaluated by using IHC with anti-heparanase polyclonal antibody. This antibody was raised by immunising a rabbit with a peptide containing the amino acid residues from 238 to 250 of the heparanase. The IHC data were used to determine the relationship between heparanase expression, and clinicopathological parameters. IHC showed that the heparanase was expressed in 23 of 52 (44.2%) endometrial cancers. Heparanase was abundantly and equally expressed in both the cytoplasm and the cell membrane of the cells in endometrial cancer. Strong heparanase-positive staining was also seen at the invasive front of the tumour into myometrium. The expression was significantly related to lymph-vascular space involvement (p = 0.0028), depth of myometrial invasion (p = 0.0026), and histological tumour grade (p = 0.0135). In six tumours with positive lymph nodes, the heparanase expression was observed as being higher compared with tumours with negative lymph nodes, which was not significant (p = 0.2349). In terms of peritoneal cytology, ovarian metastasis, and cervical invasion, we observed no significant difference in the heparanase expression assessed by IHC. These results suggest that the expression of heparanase may promote tumour invasion into myometrium and lymph vascular space in endometrial cancer.
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Affiliation(s)
- M Inamine
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
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Kanzaki M, Kaida K, Ueda M, Morita D, Hirakawa M, Motoyoshi K, Kamakura K, Kusunoki S. Ganglioside complexes containing GQ1b as targets in Miller Fisher and Guillain-Barre syndromes. J Neurol Neurosurg Psychiatry 2008; 79:1148-52. [PMID: 18339728 DOI: 10.1136/jnnp.2007.142950] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Serum antibodies to GQ1b are associated with Miller Fisher syndrome (MFS) and Guillain-Barré syndrome (GBS) with ophthalmoplegia. Antibodies to ganglioside complexes (GSCs) have not yet been examined in a large population of patients with MFS or GBS. This study aimed to determine the clinical significance of antibodies to GSCs in MFS and GBS. METHODS The study investigated serum anti-GSC antibodies and the clinical features in 64 MFS patients, 53 GBS patients with ophthalmoplegia (GBS-OP(+)) and 53 GBS patients without ophthalmoplegia (GBS-OP(-)). RESULTS Thirty patients with MFS (47%), 25 with GBS-OP(+) (47%) and none with GBS-OP(-) had antibodies to GSCs containing GQ1b or GT1a. Patients with MFS and GBS-OP(+) were subdivided according to the antibody reactivities; patients with antibodies specific to GQ1b and/or GT1a (without anti-GSCs antibodies) were placed in Group 1, those with antibodies against GSCs with a total of two sialic acids in the terminal residues, such as GQ1b/GM1, were placed in Group 2, and those with antibodies against GSCs with a total of three sialic acids in the terminal residue, such as GQ1b/GD1a, were placed in Group 3. In MFS, sensory disturbances were infrequent in Group 2 compared with the other groups (p<0.0001). Antibodies specific to GQ1b were observed more often in MFS than in GBS-OP(+) (p = 0.0002). CONCLUSIONS IgG antibodies to GSCs containing GQ1b or GT1a were closely associated with the development of ophthalmoplegia in GBS, as well as MFS. Both GQ1b and clustered epitopes of GSCs containing GQ1b or GT1a may be prime target antigens for MFS and GBS-OP(+).
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Affiliation(s)
- M Kanzaki
- Division of Neurology, Internal Medicine 3, National Defense Medical College, Saitama, Japan
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Hirakawa M, Nagai Y, Yagi C, Nashiro T, Inamine M, Aoki Y. Recurrent juvenile granulosa cell tumor of the ovary managed by palliative radiotherapy. Int J Gynecol Cancer 2008; 18:913-5. [DOI: 10.1111/j.1525-1438.2007.01133.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Prognosis in the few patients with advanced-stage juvenile granulosa cell tumor (JGCT) of the ovary has traditionally been unfavorable. We report a recurrent JGCT patient managed by palliative radiotherapy. A 37-year-old woman with recurrent JGCT received a combination of paclitaxel–carboplatin chemotherapy and then single-agent docetaxel, but her disease progressed with multiple abdominal masses and ascites. We chose palliative radiation therapy to relieve her complaints. Whole-abdominal external beam radiotherapy with pelvic boost was delivered. She tolerated the treatment well. After the completion of radiotherapy, ultrasonography showed shrinkage of the tumor, and the ascites disappeared. We should consider using radiation therapy in a palliative setting for such patients with recurrent JGCT suffering from abdominal complaints
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Hirakawa M, Tanaka M, Tanaka Y, Okubo A, Koriyama C, Tsuji M, Akiba S, Miyamoto K, Hillebrand G, Yamashita T, Sakamoto T. Age-related maculopathy and sunlight exposure evaluated by objective measurement. Br J Ophthalmol 2008; 92:630-4. [PMID: 18441173 PMCID: PMC2569146 DOI: 10.1136/bjo.2007.130575] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aim: To study the relationship between age-related maculopathy (ARM) and exposure to sunlight using an objective method. Methods: In a case–control study of Japanese men aged ⩾50 years (67 controls without ophthalmic disease and 148 with ARM), those with ARM were separated into groups of early (n = 75) and late (n = 73) ARM. Facial wrinkle length and area of hyperpigmentation, which are considered to be associated with exposure to sun, were measured using imaging with computer-based image analysis. Skin tone was also measured on the upper inner arm, which is not exposed to sun. Early and late ARM association with skin measurements was then evaluated. Results: Significantly more facial wrinkling (p = 0.047, odds ratio 3.8; 95% CI 1.01 to 13.97) and less facial hyperpigmentation (p = 0.035, odds ratio 0.3; 95% CI 0.08 to 0.92) was present in late ARM cases. The relationship between skin tone and ARM risk was not statistically significant. Conclusions: This objective method showed that lifetime exposure to sunlight is an important factor in the progression of late ARM. An individual’s reaction to sunlight exposure may have a role in ARM progression in addition to total lifetime exposure to sunlight.
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Affiliation(s)
- M Hirakawa
- Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
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Hirakawa M, Nagai Y, Yagi C, Nashiro T, Inamine M, Aoki Y. Neoadjuvant chemotherapy followed by extended-field concurrent chemoradiotherapy in squamous cell carcinoma of the cervix with positive paraaortic lymph nodes: two cases. EUR J GYNAECOL ONCOL 2008; 29:171-173. [PMID: 18459556] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
PURPOSE To report the feasibility of neoadjuvant chemotherapy (NAC) followed by extended-field concurrent chemoradiotherapy (EF-CCRT) for squamous cell carcinoma of the cervix (CC) with paraaortic lymph node (PAN) metastasis. METHODS Two patients were diagnosed with CC with positive PAN, and received two courses of cisplatin (120 mg/m2) in a neoadjuvant setting. They then received extended-field, external-beam radiotherapy (50.4 Gy) followed by intracavitary brachytherapy concurrently with cisplatin (20 mg/m2 x 5 days) at 21-day intervals. RESULTS EF-CCRT was interrupted in one patient for five days because of grade 4 neutropenia. No severe late toxicities were observed. The two patients are alive with no evidence of recurrence at present. CONCLUSIONS NAC followed by EF-CCRT is feasible and may improve the survival outcome of patients with CC with positive PAN.
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Affiliation(s)
- M Hirakawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan.
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Toita T, Tamaki W, Nagai Y, Ogawa K, Gibo S, Kakinohana Y, Hirakawa M, Kamiyama K, Aoki Y, Murayama S. 5037 POSTER Pelvic node control in locally advanced uterine cervical cancer treated with concurrent chemoradiotherapy. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71209-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Aoki Y, Nagai Y, Toita T, Hirakawa M, Toma M, Yagi C, Nashiro T, Inamine M, Kamiyama K. Concurrent chemoradiotherapy for locally advanced cervical cancer: Analysis of a single institutional 10-year experience. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.16056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
16056 Background: The purpose of this study was to report the feasibility and efficacy of concurrent chemoradiotherapy (CCRT) for the locally advanced cervical cancer in our institute. Methods: We retrospectively reviewed 147 patients (stage Ib: 9, II: 82, III: 80, and IVa: 7) with squamous cell carcinoma of the cervix treated with CCRT. Cisplatin (20mg/m2/day) was administered for 5 days every 3 weeks for a median of three courses (range: 1–5 courses) during radiotherapy (RT). The patients with paraaortic and/or common iliac lymphadenopathy were excluded. RT consisted of pelvic external beam RT (EBRT) with 40Gy/20 fractions followed by high-dose rate brachytherapy (HDR-BT) with 18Gy/3 fractions and pelvic EBRT with 10Gy/5 fractions using a midline block. Late complications were graded by the RTOG/EORTC criteria. Results: The 5-year actuarial overall survival (OS), disease-free survival (DFS), and pelvic relapse-free survival were 78.5%, 70.7%, and 78.0%, respectively. The 5-year OS by the disease stage was as follows: stage Ib 100%, II 82.0%, III 62.3%, and IVa 35.7%. Multivariate analysis identified pelvic lymphadenopathy, tumor diameter > 7cm, and pretreatment hemoglobin < 9.0g/dl as an independent prognostic factor for both OS and DFS. Only one patient suffered from grade 3 enterocolitis, but no grade 4 complication developed. Conclusions: Our experience suggests that CCRT using HDR-BT for locally advanced cervical cancer could achieve favorable local control without suffering from severe late complications. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Aoki
- University of the Ryukyus, Okinawa, Japan
| | - Y. Nagai
- University of the Ryukyus, Okinawa, Japan
| | - T. Toita
- University of the Ryukyus, Okinawa, Japan
| | | | - M. Toma
- University of the Ryukyus, Okinawa, Japan
| | - C. Yagi
- University of the Ryukyus, Okinawa, Japan
| | - T. Nashiro
- University of the Ryukyus, Okinawa, Japan
| | - M. Inamine
- University of the Ryukyus, Okinawa, Japan
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Kaida K, Morita D, Kanzaki M, Kamakura K, Motoyoshi K, Hirakawa M, Kusunoki S. Anti-ganglioside complex antibodies associated with severe disability in GBS. J Neuroimmunol 2007; 182:212-8. [PMID: 17113161 DOI: 10.1016/j.jneuroim.2006.09.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2006] [Revised: 09/08/2006] [Accepted: 09/27/2006] [Indexed: 10/23/2022]
Abstract
Ganglioside complexes (GSCs) are known as target antigens in Guillain-Barré syndrome (GBS). To elucidate the clinical importance of the anti-GSC antibodies in GBS, we investigated serum antibodies to GSCs containing two of the gangliosides, GM1, GD1a, GD1b and GT1b, and analyzed clinical features of anti-GSC-positive GBS patients. Thirty-nine (17%) of 234 GBS patients had IgG anti-GSC antibodies. Anti-GSC-positive GBS had antecedent gastrointestinal infection and lower cranial nerve deficits more frequently than control GBS. The presence of antibody specificity to GD1a/GD1b and/or GD1b/GT1b was significantly associated with severe disability and a requirement for mechanical ventilation.
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Affiliation(s)
- K Kaida
- Third Department of Internal Medicine, National Defense Medical College, 3-2 Namiki, Saitama-ken, 359-8513, Japan
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Sanai T, Hirakawa M, Yokoyama M, Soejima M, Nakayama M, Uesugi N, Takeshita N, Iguchi A, Nanishi F. Idiopathic retroperitoneal fibrosis associated with Hashimoto's thyroiditis: a long-term follow-up. Clin Nephrol 2006; 66:476-8. [PMID: 17176923 DOI: 10.5414/cnp66476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Abstract
BACKGROUND Some ganglioside complexes (GSCs) are target antigens for serum antibodies in patients with Guillain-Barré syndrome (GBS). Anti-GSC antibodies may be associated with particular clinical features of GBS. OBJECTIVE To investigate antibodies to GSCs in the sera of patients with Miller Fisher syndrome (MFS) characterised by elevation of the IgG anti-GQ1b antibody. RESULTS In all, 7 of 12 (58%) consecutive patients with MFS were found to have IgG antibodies to GSCs containing GQ1b, of whom 5 had IgG antibodies to GQ1b-GM1 complex (GQ1b/GM1) and 2 had antibodies to GQ1b/GD1a; 4 of 5 patients without sensory symptoms had anti-GQ1b/GM1 antibodies. CONCLUSIONS At least three different specificities in MFS-associated antibodies, GQ1b-specific, anti-GQ1b/GM1-positive and anti-GQ1b/GD1a-positive, were observed. In patients with MFS not only GQ1b itself but also clustered epitopes of GSCs, including GQ1b, may be considered to be prime target antigens for serum antibodies. A tendency to escape sensory disturbances is shown by anti-GQ1b/GM1-positive MFS.
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Affiliation(s)
- K Kaida
- Third Department of Internal Medicine, National Defense Medical College, Tokorozawa, Saitama-Ken, Japan
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Abstract
OBJECTIVES Dysbaric osteonecrosis (DON) is a complication of ineffective decompression following exposure to high-pressure environments. This study was designed to determine risk factors for the occurrence of DON in divers. METHODS Fifty-six male divers received skeletal examinations by radiography to assess the occurrence of DON. A questionnaire was used to obtain clinical and diving information, including diving experience and maximum diving depth. Blood samples were collected to analyse the levels of plasminogen activator inhibitor (PAI)-1, cholesterol, triglyceride, low-density lipoprotein, very low-density lipoprotein, high-density lipoprotein, apolipoprotein A1 and apolipoprotein B. RESULTS Lesions of DON were detected in 31 of the 56 (55%) divers. Multivariate logistic regression analysis showed that high levels of PAI-1, a coagulation marker (odds ratio 4.281; P=0.0296) and great maximum diving depth (odds ratio 5.627; P=0.0231) were independent predictors of DON. CONCLUSIONS This study has shown the presence of coagulation abnormality in divers with DON. This result suggests that a pharmacological approach incorporating the use of an anticoagulant may represent a potential strategy for the prevention of DON.
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Affiliation(s)
- K Miyanishi
- Department of Orthopaedic Surgery, Kyushu Rosai Hospital, 1-3-1, Kuzuharatakamatsu, Kokuraminami-ku, Kitakyushu, 800-0296 Japan
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Takahashi T, Itano Y, Noji S, Matsumoto K, Taga N, Mizukawa S, Toda N, Matsumi M, Morita K, Hirakawa M. Induction of renal metallothionein in rats with ischemic renal failure. Res Commun Mol Pathol Pharmacol 2003; 110:147-60. [PMID: 12760485] [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: 03/02/2023]
Abstract
Metallothionein (MT) is induced by various types of oxidative stress. However, whether or not MT is induced in renal ischemia/reperfusion injury, in which oxidative stress is believed to play a major role, remains unknown. The present study investigated MT expression in the kidneys of rats with ischmic acute renal failure (IARF). Rats were subjected to 60 min of bilateral renal ischemia followed by reperfusion. Renal MT mRNA expression was then analyzed by Northern blotting. MT expression in ischemic kidney was also localized by in situ hybridization and immunohistochemistry. Renal MT mRNA expression, which was barely detectable in the sham-operated control kidney, increased significantly at 3 h afer reperfsion, continued to increase to a maximal level at 24 h that was maintained for 48 h. The level of MT mRNA expression returned to that of the control by day 4. A morphological study revealed that MT was expressed exclusively in the renal tubular epithelial cells, which are the targets of ischemia/reperfusion injury, and that MT predominated in the outer medulla in the IARF rat kidney at transcriptional and translational levels. These results suggest that MT induced in the IARF rat kidney plays an important role in protecting renal cells against oxidative stress induced by ischemia/reperfusion.
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Affiliation(s)
- T Takahashi
- Department of Anesthesiology and Resuscitology, Okayma University Medical School, 2-5-1 Shikata-cho, Okayama city 700-8558, Japan.
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