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Izumi T, Saito A, Ida T, Mukuda T, Katayama Y, Wong MKS, Tsukada T. Paracrine and endocrine pathways of natriuretic peptides assessed by ligand-receptor mapping in the Japanese eel brain. Cell Tissue Res 2024; 396:197-212. [PMID: 38369645 DOI: 10.1007/s00441-024-03873-y] [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: 10/20/2023] [Accepted: 01/26/2024] [Indexed: 02/20/2024]
Abstract
The natriuretic peptide (NP) family consists of cardiac NPs (ANP, BNP, and VNP) and brain NPs (CNPs) in teleosts. In addition to CNP1-4, a paralogue of CNP4 (named CNP4b) was recently discovered in basal teleosts including Japanese eel. Mammals have lost most Cnps during the evolution, but teleost cnps were conserved and diversified, suggesting that CNPs are important hormones for maintaining brain functions in teleost. The present study evaluated the potency of each Japanese eel CNP to their NP receptors (NPR-A, NPR-B, NPR-C, and NPR-D) overexpressed in CHO cells. A comprehensive brain map of cnps- and nprs-expressing neurons in Japanese eel was constructed by integrating the localization results obtained by in situ hybridization. The result showed that CHO cells expressing NPR-A and NPR-B induced strong cGMP productions after stimulation by cardiac and brain NPs, respectively. Regarding brain distribution of cnps, cnp1 is engaged in the ventral telencephalic area and periventricular area including the parvocellular preoptic nucleus (Pp), anterior/posterior tuberal nuclei, and periventricular gray zone of the optic tectum. cnp3 is found in the habenular nucleus and prolactin cells in the pituitary. cnp4 is expressed in the ventral telencephalic area, while cnp4b is expressed in the motoneurons in the medullary area. Such CNP isoform-specific localizations suggest that function of each CNP has diverged in the eel brain. Furthermore, the Pp lacking the blood-brain barrier expressed both npra and nprb, suggesting that endocrine and paracrine NPs interplay for regulating the Pp functions in Japanese eels.
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Affiliation(s)
- Tomoki Izumi
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Ami Saito
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Takanori Ida
- Department of Bioactive Peptides, Frontier Science Research Center, University of Miyazaki, 5200, Kihara, Kiyotake, Miyazaki, Miyazaki, 889-1692, Japan
| | - Takao Mukuda
- Department of Anatomy, Faculty of Medicine, Tottori University, 86 Nishicho, Yonago, Tottori, 683-8503, Japan
| | - Yukitoshi Katayama
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Marty Kwok-Shing Wong
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
- Center for Earth Surface System Dynamics, Atmosphere and Ocean Research Institute, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan.
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Horiguchi K, Tsutsui Y, Fujiwara K, Tsukada T, Nakakura T, Yoshida S, Hasegawa R, Takigami S. Fluctuation of CD9/SOX2-positive cell populations during the turnover of GH- and TSH-producing cells in the adult anterior pituitary gland. J Reprod Dev 2023; 69:308-316. [PMID: 37778977 PMCID: PMC10721853 DOI: 10.1262/jrd.2023-023] [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: 03/08/2023] [Accepted: 09/06/2023] [Indexed: 10/03/2023] Open
Abstract
The adenohypophysis is comprised of the anterior and intermediate lobes (AL and IL, respectively). Cluster of differentiation 9 (CD9)- and sex-determining region Y-box 2 (SOX2)-positive cells are stem/progenitor hormone-producing cells in the AL. They are located in the marginal cell layer (MCL) facing Rathke's cleft between the AL and IL (primary niche) and the parenchyma of the AL (secondary niche). We previously showed that, in rats, CD9/SOX2-positive cells in the IL side of the MCL (IL-side MCL) migrate to the AL side (AL-side MCL) and differentiate into prolactin-producing cells (PRL cells) in the AL parenchyma during pregnancy, lactation, and diethylstilbestrol treatment, all of which increase PRL cell turnover. This study examined the changes in CD9/SOX2-positive stem/progenitor cell niches and their proportions by manipulating the turnover of growth hormone (GH)- and thyroid-stimulating hormone (TSH)-producing cells (GH and TSH cells, respectively), which are Pit1 lineage cells, as well as PRL cells. After induction, the isolated CD9/SOX2-positive cells from the IL-side MCL formed spheres and differentiated into GH and TSH cells. We also observed an increased GH cell proportion upon treatment with GH-releasing hormone and recovery from continuous stress and an increased TSH cell proportion upon propylthiouracil treatment, concomitant with alterations in the proportion of CD9/SOX2-positive cells in the primary and secondary niches. These findings suggest that CD9/SOX2-positive cells have the potential to supply GH and TSH when an increase in GH and TSH cell populations is required in the adult pituitary gland.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Yuto Tsutsui
- Department of Clinical Laboratory, St. Marianna University Yokohama Seibu Hospital, Kanagawa 241-0811, Japan
| | - Ken Fujiwara
- Department of Biological Science, Faculty of Science, Kanagawa University, Kanagawa 259-1293, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, Chiba 274-8510, Japan
| | - Takashi Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, Tokyo 173-8605, Japan
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
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Wong MKS, Tsuneoka Y, Tsukada T. Subcellular localization of Na +/K +-ATPase isoforms resolved by in situ hybridization chain reaction in the gill of chum salmon at freshwater and seawater. Fish Physiol Biochem 2023; 49:751-767. [PMID: 37464181 PMCID: PMC10415477 DOI: 10.1007/s10695-023-01212-6] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 06/22/2023] [Indexed: 07/20/2023]
Abstract
The Na+/K+-ATPase (NKA) α1-isoforms were examined by in situ hybridization chain reaction (ISHCR) using short hairpin DNAs, and we showed triple staining of NKA α1a, α1b, and α1c transcripts in the gill of chum salmon acclimated to freshwater (FW) and seawater (SW). The NKA α1-isoforms have closely resembled nucleotide sequences, which could not be differentiated by conventional in situ hybridization. The ISHCR uses a split probe strategy to allow specific hybridization using regular oligo DNA, resulting in high specificity at low cost. The results showed that NKA α1c was expressed ubiquitously in gill tissue and no salinity effects were observed. FW lamellar ionocytes (type-I ionocytes) expressed cytoplasmic NKA α1a and nuclear NKA α1b transcripts. However, both transcripts of NKA α1a and α1b were present in the cytoplasm of immature type-I ionocytes. The developing type-I ionocytes increased the cytoplasmic volume and migrated to the distal region of the lamellae. SW filament ionocytes (type-II ionocytes) expressed cytoplasmic NKA α1b transcripts as the major isoform. Results from morphometric analysis and nonmetric multidimensional scaling indicated that a large portion of FW ionocytes was NKA α1b-rich, suggesting that isoform identity alone cannot mark the ionocyte types. Both immature or residual type-II ionocytes and type-I ionocytes were found on the FW and SW gills, suggesting that the chum salmon retains the potential to switch the ionocyte population to fit the ion-transporting demands, which contributes to their salinity tolerance and osmoregulatory plasticity.
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Affiliation(s)
- Marty Kwok Shing Wong
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510 Japan
- Center for Earth Surface System Dynamics, Atmosphere and Ocean Research Institute, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564 Japan
| | - Yousuke Tsuneoka
- Department of Anatomy, Faculty of Medicine, Toho University, 5-21-16 Omori-nishi, Ota, Tokyo, 143-8540 Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510 Japan
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Katayama Y, Tsukada T, Hyodo S, Sakamoto H, Sakamoto T. Behavioural osmoregulation during land invasion in fish: Prandial drinking and wetting of the dry skin. PLoS One 2022; 17:e0277968. [PMID: 36477197 PMCID: PMC9728915 DOI: 10.1371/journal.pone.0277968] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 11/08/2022] [Indexed: 12/12/2022] Open
Abstract
Osmoregulatory behaviours should have evolutionarily modified for terrestrialisation of vertebrates. In mammals, sensations of buccal food and drying have immediate effects on postprandial thirst to prevent future systemic dehydration, and is thereby considered to be 'anticipatory thirst'. However, it remains unclear whether such an anticipatory response has been acquired in the non-tetrapod lineage. Using the mudskipper goby (Periophthalmus modestus) as a semi-terrestrial ray-finned fish, we herein investigated postprandial drinking and other unique features like full-body 'rolling' over on the back although these behaviours had not been considered to have osmoregulatory functions. In our observations on tidal flats, mudskippers migrated into water areas within a minute after terrestrial eating, and exhibited rolling behaviour with accompanying pectoral-fin movements. In aquarium experiments, frequency of migration into a water area for drinking increased within a few minutes after eating onset, without systemic dehydration. During their low humidity exposure, frequency of the rolling behaviour and pectoral-fin movements increased by more than five times to moisten the skin before systemic dehydration. These findings suggest anticipatory responses which arise from oral/gastrointestinal and cutaneous sensation in the goby. These sensation and motivation seem to have evolved in distantly related species in order to solve osmoregulatory challenges during terrestrialisation.
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Affiliation(s)
- Yukitoshi Katayama
- Ushimado Marine Institute, Faculty of Science, Okayama University, Setouchi, Okayama, Japan
- Department of Biomolecular Science, Toho University, Funabashi, Chiba, Japan
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Chiba, Japan
- * E-mail:
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, Funabashi, Chiba, Japan
| | - Susumu Hyodo
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Chiba, Japan
| | - Hirotaka Sakamoto
- Ushimado Marine Institute, Faculty of Science, Okayama University, Setouchi, Okayama, Japan
| | - Tatsuya Sakamoto
- Ushimado Marine Institute, Faculty of Science, Okayama University, Setouchi, Okayama, Japan
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Horiguchi K, Fujiwara K, Tsukada T, Nakakura T, Yoshida S, Hasegawa R, Takigami S. Differentiation of stem progenitor CD9/SOX2-positive cells is promoted with increased prolactin-producing and endothelial cells in the pituitary. J Reprod Dev 2022; 68:278-286. [PMID: 35691820 PMCID: PMC9334323 DOI: 10.1262/jrd.2022-047] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sex-determining region Y-box 2 (SOX2)-positive cells are stem/progenitor cells in the adenohypophysis, comprising the anterior and intermediate lobes (AL and IL, respectively). The cells
are located in the marginal cell layer (MCL) facing Rathke’s cleft (primary niche) and the parenchyma of the AL (secondary niche). We previously demonstrated in vitro that
the tetraspanin superfamily CD9 and SOX2 double-positive (CD9/SOX2-positive) cells in the IL-side MCL migrate to the AL side and differentiate into hormone-producing and endothelial cells in
the AL parenchyma. Here, we performed in vivo studies to evaluate the role of IL-side CD9/SOX2-positive cells in pregnancy, lactation, and treatment with diethylstilbestrol
(DES; an estrogen analog) when an increased population of prolactin (PRL) cells was observed in the AL of the rat pituitary. The proportions of CD9/SOX2-, CD9/Ki67-, and PRL/TUNEL-positive
cells decreased in the primary and secondary niches during pregnancy and DES treatment. In contrast, the number of CD9/PRL-positive cells increased in the AL-side MCL and AL parenchyma
during pregnancy and during DES treatment. The proportion of PRL/Ki67-positive cells increased in the AL-side MCL and AL parenchyma in response to DES treatment. Next, we isolated
CD9-positive cells from the IL-side MCL using an anti-CD9 antibody. During cell culture, the cells formed free-floating three-dimensional clusters (pituispheres). Furthermore, CD9-positive
cells in the pituisphere differentiated into PRL cells, and their differentiation potential was promoted by DES. These findings suggest that CD9/SOX2-positive cells in the IL-side MCL may
act as adult stem cells in the AL parenchyma that supply PRL cells under the influence of estrogen.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Ken Fujiwara
- Department of Biological Science, Faculty of Science, Kanagawa University, Kanagawa 259-1293, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, Chiba 274-8510, Japan
| | - Takashi Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, Tokyo 173-8605, Japan
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
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Katayama Y, Saito A, Ogoshi M, Tsuneoka Y, Mukuda T, Azuma M, Kusakabe M, Takei Y, Tsukada T. Gene duplication of C-type natriuretic peptide-4 (CNP4) in teleost lineage elicits subfunctionalization of ancestral CNP. Cell Tissue Res 2022; 388:225-238. [PMID: 35171324 DOI: 10.1007/s00441-022-03596-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 01/27/2022] [Indexed: 02/06/2023]
Abstract
The diversified natriuretic peptide (NP) family, consisting of four CNPs (CNP1-4), ANP, BNP, and VNP, has been identified in the eel. Here, we successfully cloned additional cnp genes from the brain of eel (a basal teleost) and zebrafish (a later branching teleost). The genes were identified as paralogues of cnp4 generated by the third round of whole genome duplication (3R) in the teleost lineage, thereby being named eel cnp4b and zebrafish cnp4-like, respectively. To examine the histological patterns of their expressions, we employed a newly developed in situ hybridization (ISH) chain reaction using short hairpin DNAs, in addition to conventional ISH. Eel cnp4b was expressed in the medulla oblongata, while mRNAs of eel cnp4a (former cnp4) were localized in the preoptic area. In the zebrafish brain, cnp4-like mRNA was undetectable, while the known cnp4 was expressed in both the preoptic area and medulla oblongata. Together with the different mRNA distribution of cnp4a and cnp4b in eel peripheral tissues determined by RT-PCR and ISH, it is suggested that subfunctionalization by duplicated cnp4s in ancestral teleosts has been retained only in basal teleosts. Intriguingly, cnp4b-expressing neurons in the glossopharyngeal-vagal motor complex of the medulla oblongata were co-localized with choline acetyltransferase, suggesting an involvement of Cnp4b in swallowing and respiration functions that are modulated by the vagus. Since teleost Cnp4 is an ortholog of mammalian CNP, the identified localization of teleost Cnp4 will contribute to future studies aimed at deciphering the physiological functions of CNP.
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Affiliation(s)
- Yukitoshi Katayama
- Faculty of Science, Ushimado Marine Institute, Okayama University, 130-17 Kashino, Setouchi, Okayama, 701-4303, Japan
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Ami Saito
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Maho Ogoshi
- Graduate School of Natural Science and Technology, Okayama University, 1-1-1 Tsushima-Naka, Kita, Okayama, Okayama, 700-8530, Japan
| | - Yousuke Tsuneoka
- Department of Anatomy, Faculty of Medicine, Toho University, 5-21-16 Omori-nishi, Ota, Tokyo, 143-8540, Japan
| | - Takao Mukuda
- Department of Anatomy, Faculty of Medicine, Tottori University, 86 Nishicho, Yonago, Tottori, 683-8503, Japan
| | - Morio Azuma
- Division of Molecular Pharmacology, Department of Pharmacology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Makoto Kusakabe
- Faculty of Science, Shizuoka University, 836 Otani, Suruga, Shizuoka, Shizuoka, 422-8529, Japan
| | - Yoshio Takei
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan.
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Takei Y, Ando M, Wong MKS, Tsukada T. Molecular mechanisms underlying guanylin-induced transcellular Cl - secretion into the intestinal lumen of seawater-acclimated eels. Gen Comp Endocrinol 2022; 318:113986. [PMID: 35114197 DOI: 10.1016/j.ygcen.2022.113986] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/20/2021] [Accepted: 01/27/2022] [Indexed: 11/19/2022]
Abstract
Guanylin (GN) stimulates Cl- secretion into the intestinal lumen of seawater-acclimated eels, but the molecular mechanisms of transepithelial Cl- transport are still unknown. In Ussing chamber experiments, we confirmed that mucosal application of eel GN reversed intestinal serosa-negative potential difference, indicating Cl- secretion. Serosal application of DNDS or mucosal application of DPC inhibited the GN effect, but serosal application of bumetanide had no effect. Removal of HCO3- from the serosal fluid also inhibited the GN effect. In intestinal sac experiments, mucosal GN stimulated luminal secretion of both Cl- and Na+, which was blocked by serosal DNDS. These results suggest that Cl- is taken up at the serosal side by DNDS-sensitive anion exchanger (AE) coupled with Na+-HCO3- cotransporter (NBC) but not by Na+-K+-2Cl- cotransporter 1 (NKCC1), and Cl- is secreted by unknown DPC-sensitive Cl- channel (ClC) at the mucosal side. The transcriptomic analysis combined with qPCR showed low expression of NKCC1 gene and no upregulation of the gene after seawater transfer, while high expression of ClC2 gene and upregulation after seawater transfer. In addition, SO42- transporters (apical Slc26a3/6 and basolateral Slc26a1) are also candidates for transcellular Cl- secretion in exchange of luminal SO42. Na+ secretion could occur through a paracellular route, as Na+-leaky claudin15 was highly expressed and upregulated after seawater transfer. High local Na+ concentration in the lateral interspace produced by Na+/K+-ATPase (NKA) coupled with K+ channels (Kir5.1b) seems to facilitate the paracellular transport. In situ hybridization confirmed the expression of the candidate genes in the epithelial enterocytes. Together with our previous results, we suggest that GN stimulates basolateral NBCela/AE2 and apical ClC2 to increase transcellular Cl- secretion in seawater eel intestine, which differs from the involvement of apical CFTR and basolateral NKCC1 as suggested in mammals and other teleosts.
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Affiliation(s)
- Yoshio Takei
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan.
| | - Masaaki Ando
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
| | - Marty K S Wong
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, Funabashi, Chiba 274-8510, Japan
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Horiguchi K, Fujiwara K, Tsukada T, Nakakura T, Yoshida S, Hasegawa R, Takigami S, Ohsako S. CD9-positive cells in the intermediate lobe migrate into the anterior lobe to supply endocrine cells. Histochem Cell Biol 2021; 156:301-313. [PMID: 34185148 DOI: 10.1007/s00418-021-02009-5] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2021] [Indexed: 12/20/2022]
Abstract
The adenohypophysis is composed of the anterior and intermediate lobes (AL and IL), and secretes important hormones for growth, sexual development, metabolism, and reproduction. In the marginal cell layer (MCL) facing Rathke's cleft between the IL and AL, cluster of differentiation (CD) 9-, CD81-, S100β-, and SOX2-quadruple positive (CD9/CD81/S100β/SOX2-positive) cells in the adult IL are settled as tissue-resident stem/progenitor cells supplying hormone-producing cells to the AL. However, it is unclear how CD9/CD81/S100β/SOX2-positive cells in the IL-side MCL migrate into the AL across Rathke's cleft. In the present study, we performed chimeric pituitary tissue culture using S100β/GFP-transgenic rats and Wistar rats, and traced the footprint of S100β/GFP-expressing cells. We detected IL-side S100β/GFP-expressing cells in the AL tissue, demonstrating that these cells migrate from the IL to the AL. However, the cells failed to migrate in the opposite direction. Consistently, scanning electron microscopic analysis revealed well-developed cytoplasmic protrusions in the IL-side MCL, but not in the AL-side MCL, suggesting that IL-side CD9/CD81/S100β/SOX2-positive cells had higher migratory activity. We also searched for a specific marker for IL-side CD9/CD81/S100β/SOX2-positive cells and identified tetraspanin 1 (TSPAN1) from microarray analysis. Downregulation of Tspan1 by specific siRNA impaired cell migration and significantly reduced expression of snail family transcriptional repressor 2 (Slug), a marker of epithelial-mesenchymal transition (EMT). Therefore, CD9/CD81/S100β/SOX2-positive cells in the IL-side MCL can be stem/progenitor cells that provide stem/progenitor cells to the AL-side MCL via SLUG-mediated EMT and cell migration.
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Affiliation(s)
- K Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan.
| | - K Fujiwara
- Department of Biological Science, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan
| | - T Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - T Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - S Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - R Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - S Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - S Ohsako
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
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Horiguchi K, Fujiwara K, Takeda Y, Nakakura T, Tsukada T, Yoshida S, Hasegawa R, Takigami S, Ohsako S. CD9-positive cells in the intermediate lobe of the pituitary gland are important supplier for prolactin-producing cells in the anterior lobe. Cell Tissue Res 2021; 385:713-726. [PMID: 33961126 DOI: 10.1007/s00441-021-03460-5] [Citation(s) in RCA: 6] [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] [Received: 11/10/2020] [Accepted: 04/08/2021] [Indexed: 11/28/2022]
Abstract
A supply of hormone-producing cells from stem/progenitor cells is critical to sustain the endocrine activity of the pituitary gland. In the adenohypophysis composing the anterior and intermediate lobe (AL and IL, respectively), stem/progenitor cells expressing sex-determining region Y-box 2 (SOX2) and S100β are located in the marginal cell layer (MCL) facing Rathke's cleft (primary niche) and the parenchyma of the AL (secondary niche). Our previous studies using mice and rats indicated that the tetraspanin superfamily CD9 and CD81 are expressed in S100β/SOX2-positive cells of primary and secondary niches (named CD9/CD81/S100β/SOX2-positive cell), and the cells located in the AL-side niches exhibit plasticity and multipotency. However, it is unclear whether CD9/CD81/S100β/SOX2-positive cells in the IL-side primary niche are stem/progenitor cells for the AL or IL. Here, we successfully isolated pure CD9/CD81/S100β/SOX2-positive cells from the IL-side primary niche. They had a higher level of S100β and SOX2 mRNA and a greater pituisphere forming capacity than those of CD9/CD81/S100β/SOX2-positive cells isolated from the AL. They also had capacity to differentiate into all types of adenohypophyseal hormone-producing cells, concomitantly with the loss of CD9 expression. Loss of CD9 and CD81 function in CD9/CD81/S100β/SOX2-positive cells by siRNA treatment impaired prolactin cell differentiation. Consistently, in the pituitary gland of CD9/CD81 double knockout mice, dysgenesis of the MCL and a lower population of prolactin cells were observed. These results suggest that the CD9/CD81/S100β/SOX2-positive cells in the MCL of the IL-side are potential suppliers of adult core stem cells in the AL.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan.
| | - Ken Fujiwara
- Department of Biological Science, Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan
| | - Yoshito Takeda
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, 565-0871, Japan
| | - Takashi Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - Shunji Ohsako
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
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10
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Horiguchi K, Yoshida S, Tsukada T, Fujiwara K, Nakakura T, Hasegawa R, Takigami S, Ohsako S. Cluster of differentiation (CD) 9-positive mouse pituitary cells are adult stem/progenitor cells. Histochem Cell Biol 2020; 155:391-404. [PMID: 33221951 DOI: 10.1007/s00418-020-01943-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 10/22/2022]
Abstract
SOX2-positive cells are stem/progenitor cells that supply hormone-producing cells; they are found in the anterior lobe of the rodent pituitary gland. However, they are likely composed of several subpopulations. In rats, a SOX2-positive cell populations can be distinguished by the presence of S100β. We identified the novel markers cluster of differentiation (CD) CD9 and CD81, members of the tetraspanin superfamily, for the identification of S100β/SOX2-positive cells. Recently, CD9/CD81 double-knockout mice were generated. Although they grew normally until 3 weeks after birth, they exhibited atrophy of the pituitary gland. These findings suggested that CD9/CD81/S100β/SOX2-positive cells in the mouse pituitary are adult stem/progenitor cells. To substantiate this hypothesis, we examined CD9 and CD81 expression in the adult and developing anterior lobe. Immunohistochemistry showed that CD9/CD81-positive cells began appearing from postnatal day 0 and settled in the stem cell niches (marginal cell layer and parenchyma) of the adult anterior lobe while expressing S100β. We next isolated CD9 -positive cells from the adult anterior lobe, using the anti-CD9 antibody for cell characterisation. The cells in culture formed free-floating three-dimensional clusters (pituispheres); moreover, induction into all types of hormone-producing cells was successful. Furthermore, reduction of CD9 and CD81 mRNAs by siRNAs inhibited cell proliferation. These findings indicate that CD9/CD81/S100β/SOX2-positive cells may play a role as adult stem/progenitor cells in SOX2-positive subpopulations, thus supplying hormone-producing cells in the postnatal anterior lobe. Furthermore, CD9 and CD81 are implicated in cell proliferation. The current findings provide novel insights into adult pituitary stem/progenitor cells.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan.
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Ken Fujiwara
- Department of Biological Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa, 259-1293, Japan
| | - Takashi Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, 2-11-1 Kaga, Itabashi, Tokyo, 173-8605, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
| | - Shunji Ohsako
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka, Tokyo, 181-8612, Japan
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11
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Katano S, Yano T, Tsukada T, Kouzu H, Honma S, Inoue T, Takamura Y, Nagaoka R, Ohori K, Koyama M, Nagano N, Nishikawa R, Hashimoto A, Katayose M, Miura T. Clinical determinants and prognostic impact of osteoporosis in patients with chronic heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3418] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Despite accumulating evidence of a close association between orthopedic fractures and chronic heart failure (CHF), the clinical risk factors of osteoporosis, defined as reduction in bone mineral densities (BMDs), in CHF patients have not been systematically analyzed. In addition, the impact of osteoporosis on prognosis of CHF remains unclear.
Aims
We aimed to clarify the prevalence, clinical risk factors, and prognostic impact of osteoporosis in CHF patients.
Methods
We retrospectively examined 303 CHF patients (75 years, [interquartile range (IQR), 66–82 years]; 41% female). BMDs at the lumber spine, femoral neck, and total femur were measured by dual-energy X-ray absorptiometry (DEXA), and osteoporosis was diagnosed when BMD at any of the three sites was less than 70% of Young Adult Mean.
Results
The prevalence of osteoporosis in the CHF patients was 40%. Patients with osteoporosis were older (79 [IQR, 74–86] vs. 72 [IQR, 62–80] years), included a large percentage of females, had slower gait speed and had lower body mass index (BMI). Loop diuretics and warfarin were used more frequently and direct oral anticoagulants (DOACs) were used less frequently in patients with osteoporosis than in patients without osteoporosis. Multivariate logistic regression analysis indicated that sex (odds ratio [OR] 5.07, 95% Confidence Interval [CI] 2.68–9.61, p<0.01), BMI (OR, 0.83; 95% CI, 0.75–0.91; p<0.01), gait speed (OR, 0.80; 95% CI, 0.70–0.92; p<0.01), loop diuretics use (OR, 2.52; 95% CI, 1.20–5.27; p=0.01) and no DOACs use (OR, 0.43; 95% CI, 0.19–0.96; p=0.04) were independently associated with osteoporosis. During the mean follow-up period of 290±254 days, 92 patients (30.4%) had adverse events. When patients with osteoporosis were divided into subgroups according to the number of sites with BMD of an osteoporosis level, Kaplan-Meier survival curves showed that the rate of adverse events (death and cardiovascular events) was higher in patients with osteoporotic BMD at two or more sites than in patients without osteoporosis (51% vs. 23%, p=0.03) (Figure). In multivariate Cox regression analyses, osteoporotic BMD at two or more sites was an independent predictor of adverse events after adjustment for age, sex, and NT-proBNP level (Hazard ratio, 1.74; 95% CI, 1.01–2.99; p=0.04).
Conclusion
The risk of osteoporosis may be increased in users of loop diuretics and may be decreased in users of DOACs in CHF patients. Extent of osteoporosis is a novel predictor of adverse events in CHF patients.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): The Japan Society for the Promotion of Science KAKENHI
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Affiliation(s)
- S Katano
- Sapporo Medical University Hospital, Division of Rehabilitation, Sapporo, Japan
| | - T Yano
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - T Tsukada
- Social Welfare Corporation, Hokkaido Social Work Association Obihiro Hospital, Cardiac Rehabilitation Center, Obihiro, Japan
| | - H Kouzu
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - S Honma
- Sapporo Cardiovascular Hospital, Department of Rehabilitation, Sapporo, Japan
| | - T Inoue
- Sapporo Medical University Hospital, Division of Rehabilitation, Sapporo, Japan
| | - Y Takamura
- Sapporo Medical University Hospital, Division of Rehabilitation, Sapporo, Japan
| | - R Nagaoka
- Sapporo Medical University Hospital, Division of Rehabilitation, Sapporo, Japan
| | - K Ohori
- Hokkaido Cardiovascular Hospital, Department of Cardiology, Sapporo, Japan
| | - M Koyama
- Sapporo Medical University, Department of Public Health, Sapporo, Japan
| | - N Nagano
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - R Nishikawa
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
| | - A Hashimoto
- Sapporo Medical University, Division of Health Care Administration and Management, Sapporo, Japan
| | - M Katayose
- Sapporo Medical University, Second Division of Physical Therapy, Sapporo, Japan
| | - T Miura
- Sapporo Medical University, Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo, Japan
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12
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Horiguchi K, Yoshida S, Tsukada T, Nakakura T, Fujiwara K, Hasegawa R, Takigami S, Ohsako S. Expression and functions of cluster of differentiation 9 and 81 in rat mammary epithelial cells. J Reprod Dev 2020; 66:515-522. [PMID: 32830152 PMCID: PMC7768173 DOI: 10.1262/jrd.2020-082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cluster of differentiation (CD) 9 and CD81 are closely-related members of the tetraspanin family that consist of four-transmembrane domain proteins.
Cd9 and Cd81 are highly expressed in breast cancer cells; however, their expression in healthy mammary glands is unclear. In
this study, we performed quantitative real-time PCR to analyze the expression levels of Cd9 and Cd81. Histological techniques
were employed to identify Cd9- and Cd81-expressing cells in rat mammary glands during pregnancy and lactation. It was observed
that Cd9 and Cd81 were expressed in the mammary glands, and their expression levels correlated with mammary gland development.
To identify cells expressing Cd9 and Cd81 in the mammary glands, we performed double immunohistochemical staining for CD9 and
CD81, prolactin receptor long form, estrogen receptor alpha, or Ki67. The results showed that CD9 and CD81 were co-expressed in proliferating mammary epithelial
cells. Next, we attempted to isolate CD9-positive epithelial cells from the mammary gland using pluriBead cell-separation technology based on antibody-mediated
binding of cells to beads of different sizes, followed by isolation using sieves with different mesh sizes. We successfully isolated CD9-positive epithelial
cells with 96.8% purity. In addition, we observed that small-interfering RNAs against Cd9 and Cd81 inhibited estrogen-induced
proliferation of CD9-positive mammary epithelial cells. Our current findings may provide novel insights into the proliferation of mammary epithelial cells
during pregnancy and lactation as well as in pathological processes associated with breast cancer.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University, Chiba 274-8510, Japan
| | - Takashi Nakakura
- Department of Anatomy, Graduate School of Medicine, Teikyo University, Tokyo 173-8605, Japan
| | - Ken Fujiwara
- Department of Biological Science, Kanagwa University, Kanagawa 259-1293, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
| | - Shunji Ohsako
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo 181-8612, Japan
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13
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Fujiwara K, Tsukada T, Horiguchi K, Fujiwara Y, Takemoto K, Nio-Kobayashi J, Ohno N, Inoue K. Aldolase C is a novel molecular marker for folliculo-stellate cells in rodent pituitary. Cell Tissue Res 2020; 381:273-284. [DOI: 10.1007/s00441-020-03200-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/03/2020] [Indexed: 12/31/2022]
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14
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Katayama Y, Wong MKS, Kusakabe M, Fujio M, Takahashi N, Yaguchi M, Tsukada T. Seawater transfer down-regulates C-type natriuretic peptide-3 expression in prolactin-producing cells of Japanese eel: Negative correlation with plasma chloride concentration. Mol Cell Endocrinol 2020; 507:110780. [PMID: 32142860 DOI: 10.1016/j.mce.2020.110780] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/30/2020] [Accepted: 02/27/2020] [Indexed: 10/24/2022]
Abstract
In euryhaline fishes, atrial and B-type natriuretic peptides are important hormones in hypo-osmoregulation, whereas osmoregulatory functions of C-type natriuretic peptides (CNPs) remain to be investigated. Although four CNP isoforms (CNP1-4) are mainly expressed in the brain, multiorgan expression of CNP3 was found in euryhaline Japanese eel, Anguilla japonica. Here we identified the CNP3-expressing cells and examined their response to osmotic stress in eel. CNP3 was expressed in several endocrine cells: prolactin-producing cells (pituitary), glucagon-producing cells (pancreas), and cardiomyocytes (heart). Pituitary CNP3 expression was the highest among organs and was decreased following seawater transfer, followed by a decrease in the freshwater-adaptating (hyper-osmoregulatory) hormone prolactin. We also showed the negative correlation between CNP3/prolactin expression in the pituitary and plasma Cl- concentration, but not for plasma Na+ concentration. These results suggest that CNP3 in the pituitary (and pancreas) plays a critical role in freshwater adaptation of euryhaline eel together with prolactin.
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Affiliation(s)
- Yukitoshi Katayama
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Marty Kwok-Shing Wong
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan
| | - Makoto Kusakabe
- Faculty of Science, Shizuoka University, 836 Otani, Suruga, Shizuoka, Shizuoka, 422-8529, Japan
| | - Megumi Fujio
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Natsuki Takahashi
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Miku Yaguchi
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan.
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15
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Wong MKS, Uchida M, Tsukada T. Histological differentiation of mucus cell subtypes suggests functional compartmentation in the eel esophagus. Cell Tissue Res 2020; 380:499-512. [PMID: 31900664 DOI: 10.1007/s00441-019-03140-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 11/07/2019] [Indexed: 11/25/2022]
Abstract
We investigated the morphological and histological changes in eel esophagus during the course of freshwater (FW) to seawater (SW) transfer and identified multiple types of mucus cells from tissues that were fixed using Carnoy's solution to retain the mucus structure. The FW esophageal epithelium is stratified and composed of superficial cells, mucus cells, club cells (exocrine cells with a large vacuole), and basal cells. Two types of periodic acid-Schiff (PAS)-positive mucus cells were identified, and they can be further distinguished by the periodic acid-thionin Schiff/KOH/PAS (PAT) method, indicating that C7/9- and C8-sialic acids were produced. Isolectin B4-positive mucus cells were found among the C8-sialic acid-producing cells and located at the tips of the villi at mid-posterior regions of the FW esophagus. The two different muci were immiscible and may form separate layers to protect the tissues from the high osmolality of imbibed SW during early SW acclimation. The densities of club cells and isolectin B4-positive cells decreased after SW acclimation, and cuboidal/columnar epithelial cells subsequently developed for active Na+ and Cl- absorption. Cuboidal/columnar epithelial cells proliferated in scattered array rather than at the bases of the villi, thereby retaining the characteristic of the stratified epithelium. Prominent leukocyte invasion was found at the base of the stratified epithelium at early SW transfer, indicating that the immune system was also activated in response to antigen exposure from imbibed SW. The mucus composition in FW is more complicated than that in SW, fueling further studies for their functions to form unstirred layers as osmoregulatory barriers.
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Affiliation(s)
- Marty Kwok-Shing Wong
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan.
| | - Mizuki Uchida
- Department of Biomolecular Science, Faculty of Sciences, Toho University, Chiba, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Sciences, Toho University, Chiba, Japan
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16
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Uechi T, Shibata S, Suda T, Hata N, Hirabuki K, Tsukada T, Hirasawa A, Matsuda T. P1707Non-business hours and cold exposure independently worsen neurological outcome after out-of-hospital cardiac arrest. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0462] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
It has been known that survival rates after out-of-hospital cardiac arrest (OHCA) are lower at night than during the day. It may be explained by diurnal temperature changes.
Purpose
The purpose of the present study was to test our hypothesis that diurnal variation of the prognosis after OHCA would be independent from the ambient temperature changes.
Methods
We used the All-Japan Utstein Registry (2005–2010) combined with atmospheric temperature from the Automated Meteorological Data Acquisition System, and enrolled adult OHCA patients who had suffered from a witnessed cardiac arrest and who had been resuscitated.
The primary outcome was a favorable neurological outcome one month after OHCA and the secondary outcome was the presence of return of spontaneous circulation (ROSC) before hospital admission. Effects of business vs. non-business hours and ambient temperature on the primary and secondary outcomes were assessed with adjustment for factors that are known to potentially affect OHCA outcomes. Sub-group analysis based on the initial cardiac rhythm (VT/Vf, PEA and Asystole) was also performed.
Results
Among the 263,750 witnessed OHCA patients, neurological survival and ROSC rates were significantly increased with an adjusted odds ratio (OR) of 1.13 (95% CI 1.08–1.18) and hazard ratio (HR) of 1.06 (95% CI 1.04–1.09) for non-business hours, and OR of 1.11 (95% CI 1.05–1.17) and HR of 1.05 (95% CI 1.02–1.08) for each 20°C increase in temperature. The effects were different between business vs. non-business hours and ambient temperature dependent on the initial cardiac rhythm.
Conclusions
These findings suggest that both the outdoor temperature and business hours are independent factors for predicting neurological outcomes after OHCA with different characteristics based on the initial cardiac rhythms. Diurnal variability of prognosis after OHCA is likely to be attributable to diurnal variation of medical resources.
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Affiliation(s)
- T Uechi
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - S Shibata
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - T Suda
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - N Hata
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - K Hirabuki
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - T Tsukada
- Kyorin University School of Medicine, Department of General Medicine, Tokyo, Japan
| | - A Hirasawa
- Kyorin University, Faculty of Health Sciences, Department of Health and Welfare, Tokyo, Japan
| | - T Matsuda
- Kyorin University School of Medicine, Department of Traumatology and Critical Care Medicine, Tokyo, Japan
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17
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Tsukada T, Isowa Y, Kito K, Yoshida S, Toneri S, Horiguchi K, Fujiwara K, Yashiro T, Kato T, Kato Y. Identification of TGFβ-induced proteins in non-endocrine mouse pituitary cell line TtT/GF by SILAC-assisted quantitative mass spectrometry. Cell Tissue Res 2019; 376:281-293. [DOI: 10.1007/s00441-018-02989-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 12/29/2018] [Indexed: 01/04/2023]
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18
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Azuma M, Tsukada T, Inagaki T, Casmad F, Jindatip D, Tofrizal A, Maliza R, Batchuluun K, Syaidah R, Ohno N, Fujiwara K, Kikuchi M, Yashiro T. Immunohistochemical Study of the Laminin α5 Chain and Its Specific Receptor, Basal Cell Adhesion Molecule (BCAM), in both Fetal and Adult Rat Pituitary Glands. Acta Histochem Cytochem 2018; 51:145-152. [PMID: 30510328 PMCID: PMC6261841 DOI: 10.1267/ahc.18014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/16/2018] [Accepted: 08/10/2018] [Indexed: 01/01/2023] Open
Abstract
Laminin, a major basement membrane protein, comprises three subunit chains: α, β, and γ chains. Among these chains, only the laminin α chain is capable of signaling via laminin receptors. Although laminin isoforms containing the α5 chain were reported to be the first laminin produced during rat anterior pituitary gland development, the functions of these isoforms are unknown. We used immunohistochemical techniques to localize the laminin α5 chain and its specific receptor, basal cell adhesion molecule (BCAM), in fetal and adult pituitary gland. Laminin α5 chain immunoreactivity was observed in the basement membrane of the primordial adenohypophysis at embryonic days 12.5 to 19.5. Double immunostaining showed that BCAM was present and co-localized with the laminin α5 chain in the tissue. Quantitative analysis showed that the laminin α5 chain and BCAM were expressed in the anterior pituitary gland during postnatal development and in adulthood (postnatal day 60). In the adult gland, co-localization of the laminin α5 chain and BCAM was observed, and BCAM was detected in both the folliculo-stellate cells and endothelial cells. These results suggest that laminin α5 chain signaling via BCAM occurs in both the fetal adenohypophysis and adult anterior pituitary gland.
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Affiliation(s)
- Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University
| | - Takeshi Inagaki
- Division of Forensic Medicine, Department of Anatomy, Jichi Medical University School of Medicine
| | - Fujianti Casmad
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Depicha Jindatip
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Department of Anatomy, Faculty of Medicine, Chulalongkorn University
| | - Alimuddin Tofrizal
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rita Maliza
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Khongorzul Batchuluun
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rahimi Syaidah
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Nobuhiko Ohno
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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19
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Tsukada T, Yoshida S, Kito K, Fujiwara K, Yako H, Horiguchi K, Isowa Y, Yashiro T, Kato T, Kato Y. TGFβ signaling reinforces pericyte properties of the non-endocrine mouse pituitary cell line TtT/GF. Cell Tissue Res 2017; 371:339-350. [DOI: 10.1007/s00441-017-2758-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/19/2017] [Indexed: 01/11/2023]
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20
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Wong MKS, Tsukada T, Ogawa N, Pipil S, Ozaki H, Suzuki Y, Iwasaki W, Takei Y. A sodium binding system alleviates acute salt stress during seawater acclimation in eels. Zoological Lett 2017; 3:22. [PMID: 29255617 PMCID: PMC5727781 DOI: 10.1186/s40851-017-0081-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 10/11/2017] [Indexed: 05/28/2023]
Abstract
BACKGROUND Teleosts transiting from freshwater (FW) to seawater (SW) environments face an immediate osmotic stress from ion influxes and water loss, but some euryhaline species such as eels can maintain a stable plasma osmolality during early SW exposure. The time course changes in the gene expression, protein abundance, and localization of key ion transporters suggested that the reversal of the ion transport systems was gradual, and we investigate how eels utilize a Na-binding strategy to slow down the ion invasion and complement the transporter-mediated osmoregulation. RESULTS Using an electron probe micro-analyzer, we localized bound Na in various eel tissues in response to SW transfer, suggesting that the Na-binding molecules were produced to sequester excess ionic Na+ to negate its osmotic potential, thus preventing acute cellular dehydration. Mucus cells were acutely activated in digestive tract, gill, and skin after SW transfer, producing Na-binding molecule-containing mucus layers that fence off high osmolality of SW. Using gel filtration HPLC, some molecules at 18 kDa were found to bind Na in the luminal secretion of esophagus and intestine, and higher binding was associated with SW transfer. Transcriptome and protein interaction results indicated that downregulation of Notch and β-catenin pathways, and dynamic changes in TGFβ pathways in intestine were involved during early SW transition, supporting the observed histological changes on epithelial desquamation and increased mucus production. CONCLUSIONS The timing for the activation of the Na-binding mechanism to alleviate the adverse osmotic gradient was temporally complementary to the subsequent remodeling of branchial ionocytes and transporting epithelia of the digestive tract. The strategy to manipulate the osmotic potential of Na+ by specific binding molecules is similar to the osmotically inactive Na described in human skin and muscle. The Na-binding molecules provide a buffer to tolerate the salinity changes, which is advantageous to the estuary and migrating fishes. Our data pave the way to identify this unknown class of molecules and open a new area of vertebrate osmoregulation research.
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Affiliation(s)
- Marty Kwok Shing Wong
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa City, Japan
| | - Takehiro Tsukada
- Department of Biomolecular Science, Toho University, Funabashi City, Japan
| | - Nobuhiro Ogawa
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa City, Japan
| | - Supriya Pipil
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa City, Japan
| | - Haruka Ozaki
- Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Japan
- Bioinformatics Research Unit, Advanced Center for Computing and Communication, RIKEN, Wako City, Japan
| | - Yutaka Suzuki
- Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Japan
| | - Wataru Iwasaki
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa City, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa City, Japan
| | - Yoshio Takei
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa City, Japan
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Syaidah R, Tsukada T, Azuma M, Horiguchi K, Fujiwara K, Kikuchi M, Yashiro T. Fibromodulin Expression in Folliculostellate Cells and Pericytes Is Promoted by TGFβ Signaling in Rat Anterior Pituitary Gland. Acta Histochem Cytochem 2016; 49:171-179. [PMID: 28127105 PMCID: PMC5263227 DOI: 10.1267/ahc.16021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 10/07/2016] [Indexed: 11/22/2022] Open
Abstract
Fibromodulin belongs to the family of small leucine-rich proteoglycans (SLRPs), an active component of extracellular matrix. It directly binds collagens to promote fibrillogenesis and also binds transforming growth factor-beta (TGFβ) to antagonize its actions. Our previous studies of rat anterior pituitary gland revealed that fibromodulin is expressed in folliculostellate cells and pericytes. Although our recent study showed that TGFβ2 secreted from folliculostellate cells induces collagen synthesis in pericytes, the involvement of fibromodulin in TGFβ2-mediated collagen regulation has not been studied. The present study examined the effect of TGFβ2 on fibromodulin synthesis in rat anterior pituitary gland. In situ hybridization for TGFβ receptor II and immunohistological techniques revealed the presence of TGFβ receptor II in folliculostellate cells and pericytes. To confirm canonical TGFβ intracellular signaling, Smad2 immunocytochemistry was performed. Nuclear translocation of Smad2 was observed in folliculostellate cells and pericytes after TGFβ2 treatment. TGFβ2 strongly enhanced fibromodulin mRNA and protein expressions, and TGFβ2-induced mRNA expression was completely blocked by TGFβ receptor I inhibitor (SB431542). These results suggest that folliculostellate cells and pericytes exhibit canonical TGFβ2 signaling, which is associated with fibromodulin production. Thus, this is the first report to show that TGFβ signaling regulates the endogenous TGFβ antagonist fibromodulin in the gland.
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Affiliation(s)
- Rahimi Syaidah
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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22
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Horiguchi K, Nakakura T, Yoshida S, Tsukada T, Kanno N, Hasegawa R, Takigami S, Ohsako S, Kato T, Kato Y. Identification of THY1 as a novel thyrotrope marker and THY1 antibody-mediated thyrotrope isolation in the rat anterior pituitary gland. Biochem Biophys Res Commun 2016; 480:273-279. [DOI: 10.1016/j.bbrc.2016.10.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 10/16/2016] [Indexed: 10/20/2022]
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23
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Maliza R, Fujiwara K, Tsukada T, Azuma M, Kikuchi M, Yashiro T. Effects of retinoic acid on growth hormone-releasing hormone receptor, growth hormone secretagogue receptor gene expression and growth hormone secretion in rat anterior pituitary cells. Endocr J 2016; 63:555-61. [PMID: 27052215 DOI: 10.1507/endocrj.ej16-0086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Retinoic acid (RA) is an important signaling molecule in embryonic development and adult tissue. The actions of RA are mediated by the nuclear receptors retinoic acid receptor (RAR) and retinoid X receptor (RXR), which regulate gene expression. RAR and RXR are widely expressed in the anterior pituitary gland. RA was reported to stimulate growth hormone (GH) gene expression in the anterior pituitary cells. However, current evidence is unclear on the role of RA in gene expression of growth hormone-releasing hormone receptor (Ghrh-r), growth hormone secretagogue receptor (Ghs-r) and somatostatin receptors (Sst-rs). Using isolated anterior pituitary cells of rats, we examined the effects of RA on gene expression of these receptors and GH release. Quantitative real-time PCR revealed that treatment with all-trans retinoic acid (ATRA; 10(-6) M) for 24 h increased gene expression levels of Ghrh-r and Ghs-r; however, expressions of Sst-r2 and Sst-r5 were unchanged. Combination treatment with the RAR-agonist Am80 and RXR-agonist PA024 mimicked the effects of ATRA on Ghrh-r and Ghs-r gene expressions. Exposure of isolated pituitary cells to ATRA had no effect on basal GH release. In contrast, ATRA increased growth hormone-releasing hormone (GHRH)- and ghrelin-stimulated GH release from cultured anterior pituitary cells. Our results suggest that expressions of Ghrh-r and Ghs-r are regulated by RA through the RAR-RXR receptor complex and that RA enhances the effects of GHRH and ghrelin on GH release from the anterior pituitary gland.
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Affiliation(s)
- Rita Maliza
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, Shimotsuke, Japan
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24
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Kinoshita J, Fushida S, Kaji M, Oyama K, Hirono Y, Nezuka H, Takeda T, Tsukada T, Ohyama S, Fujimura T, Ohta T. P-283 Paclitaxel plus valproic acid versus paclitaxel alone as second or third line therapy for advanced gastric cancer: a randomized phase 2 trial. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.273] [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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25
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Kurata T, Fushida S, Tsukada T, Kinoshita J, Oyama K, Ohta T. P-206 Effects of eribulin mesilate for tumor progression and fibrosis in gastric cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.198] [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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26
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Tsukada T, Azuma M, Horiguchi K, Fujiwara K, Kouki T, Kikuchi M, Yashiro T. Folliculostellate cell interacts with pericyte via TGFβ2 in rat anterior pituitary. J Endocrinol 2016; 229:159-70. [PMID: 26957638 DOI: 10.1530/joe-16-0033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 03/07/2016] [Indexed: 12/14/2022]
Abstract
The anterior pituitary gland comprises five types of endocrine cells plus non-endocrine cells including folliculostellate cells, endothelial cells, and capillary mural cells (pericytes). In addition to being controlled by the hypothalamic-pituitary-target organ axis, the functions of these cells are likely regulated by local cell and extracellular matrix (ECM) interactions. However, these complex interactions are not fully understood. We investigated folliculostellate cell-mediated cell-to-cell interaction. Using S100β-GFP transgenic rats, which express GFP in folliculostellate cells, we designed a three-dimensional cell culture to examine the effects of folliculostellate cells. Interestingly, removal of folliculostellate cells reduced collagen synthesis (Col1a1 and Col3a1). Because pericytes are important collagen-producing cells in the gland, we stained for desmin (a pericyte marker). Removal of folliculostellate cells resulted in fewer desmin-positive pericytes and less desmin mRNA. We then attempted to identify the factor mediating folliculostellate cell-pericyte interaction. RT-PCR and in situ hybridization revealed that the important profibrotic factor transforming growth factor beta-2 (TGFβ2) was specifically expressed in folliculostellate cells and that TGFβ receptor II was expressed in pericytes, endothelial cells, and parenchymal cells. Immunocytochemistry showed that TGFβ2 induced SMAD2 nuclear translocation in pericytes. TGFβ2 increased collagen synthesis in a dose-dependent manner. This action was completely blocked by TGFβ receptor I inhibitor (SB431542). Diminished collagen synthesis in folliculostellate cell-deficient cell aggregates was partially recovered by TGFβ2. TGFβ2-mediated folliculostellate cell-pericyte interaction appears to be essential for collagen synthesis in rat anterior pituitary. This finding sheds new light on local cell-ECM interactions in the gland.
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Affiliation(s)
- Takehiro Tsukada
- Division of Histology and Cell BiologyDepartment of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Morio Azuma
- Division of Histology and Cell BiologyDepartment of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Kotaro Horiguchi
- Laboratory of Anatomy and Cell BiologyDepartment of Health Sciences, Kyorin University, Tokyo, Japan
| | - Ken Fujiwara
- Division of Histology and Cell BiologyDepartment of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Tom Kouki
- Division of Histology and Cell BiologyDepartment of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Motoshi Kikuchi
- Laboratory of Natural HistoryJichi Medical University School of Medicine, Tochigi, Japan
| | - Takashi Yashiro
- Division of Histology and Cell BiologyDepartment of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
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27
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Azuma M, Tofrizal A, Maliza R, Batchuluun K, Ramadhani D, Syaidah R, Tsukada T, Fujiwara K, Kikuchi M, Horiguchi K, Yashiro T. Maintenance of the Extracellular Matrix in Rat Anterior Pituitary Gland: Identification of Cells Expressing Tissue Inhibitors of Metalloproteinases. Acta Histochem Cytochem 2015; 48:185-92. [PMID: 26855451 PMCID: PMC4726572 DOI: 10.1267/ahc.15020] [Citation(s) in RCA: 12] [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: 07/13/2015] [Accepted: 10/13/2015] [Indexed: 01/16/2023] Open
Abstract
The extracellular matrix (ECM) is important in creating cellular environments in tissues. Recent studies have demonstrated that ECM components are localized in anterior pituitary cells and affect cell activity. Thus, clarifying the mechanism responsible for ECM maintenance would improve understanding of gland function. Tissue inhibitors of metalloproteinases (TIMPs) are endogenous inhibitors of matrix metalloproteinases and participate in ECM degradation. In this study, we investigated whether cells expressing TIMPs are present in rat anterior pituitary gland. Reverse transcription polymerase chain reaction was used to analyze expression of the TIMP family (TIMP1-4), and cells producing TIMPs in the gland were identified by using in situ hybridization. Expression of TIMP1, TIMP2, and TIMP3 mRNAs was detected, and the TIMP-expressing cells were located in the gland. The TIMP-expressing cells were also investigated by means of double-staining with in situ hybridization and immunohistochemical techniques. Double-staining revealed that TIMP1 mRNA was expressed in folliculostellate cells. TIMP2 mRNA was detected in folliculostellate cells, prolactin cells, and thyroid-stimulating hormone cells. TIMP3 mRNA was identified in endothelial cells, pericytes, novel desmin-immunopositive perivascular cells, and folliculostellate cells. These findings indicate that TIMP1-, TIMP2-, and TIMP3-expressing cells are present in rat anterior pituitary gland and that they are involved in maintaining ECM components.
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Affiliation(s)
- Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Alimuddin Tofrizal
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rita Maliza
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Khongorzul Batchuluun
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rahimi Syaidah
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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28
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Horiguchi K, Fujiwara K, Tsukada T, Yako H, Tateno K, Hasegawa R, Takigami S, Ohsako S, Yashiro T, Kato T, Kato Y. Expression of Slug in S100β-protein-positive cells of postnatal developing rat anterior pituitary gland. Cell Tissue Res 2015; 363:513-24. [PMID: 26246400 DOI: 10.1007/s00441-015-2256-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/06/2015] [Indexed: 01/06/2023]
Abstract
Among heterogeneous S100β-protein-positive (S100β-positive) cells, star-like cells with extended cytoplasmic processes, the so-called folliculo-stellate cells, envelop hormone-producing cells or interconnect homophilically in the anterior pituitary. S100β-positive cells are known, from immunohistochemistry, to emerge from postnatal day (P) 10 and to proliferate and migrate in the parenchyma of the anterior pituitary with growth. Recent establishment of S100β-GFP transgenic rats expressing specifically green fluorescent protein (GFP) under the control of the S100β-promoter has allowed us to observe living S100β-positive cells. In the present study, we first confirmed that living S100β-positive cells in tissue cultures of S100β-GFP rat pituitary at P5 were present prior to P10 by means of confocal laser microscopy and that they proliferated and extended their cytoplasmic processes. Second, we examined the expression of the Snail-family zinc-finger transcription factors, Snail and Slug, to investigate the mechanism behind the morphological changes and the proliferation of S100β-positive cells. Interestingly, we detected Slug expression in S100β-positive cells and its increase together with development in the anterior pituitary. To analyze downstream of SLUG in S100β-positive cells, we utilized specific small interfering RNA for Slug mRNAs and observed that the expression of matrix metalloprotease (Mmp) 9, Mmp14 and chemokine Cxcl12 was down-regulated and that morphological changes and proliferation were decreased. Thus, our findings suggest that S100β-positive cells express Slug and that its expression is important for subsequent migration and proliferation.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 476 Miyashita-cho, Hachioji, Tokyo, 192-8508, Japan. .,Institute of Reproduction and Endocrinology, Meiji University, Kanagawa, Japan.
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Hideji Yako
- Division of Life Science, Graduate School of Agriculture, Meiji University, Kanagawa, Japan
| | - Kozue Tateno
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 476 Miyashita-cho, Hachioji, Tokyo, 192-8508, Japan
| | - Rumi Hasegawa
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 476 Miyashita-cho, Hachioji, Tokyo, 192-8508, Japan
| | - Shu Takigami
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 476 Miyashita-cho, Hachioji, Tokyo, 192-8508, Japan
| | - Shunji Ohsako
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, 476 Miyashita-cho, Hachioji, Tokyo, 192-8508, Japan
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Takako Kato
- Institute of Reproduction and Endocrinology, Meiji University, Kanagawa, Japan
| | - Yukio Kato
- Department of Life Science, School of Agriculture, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan. .,Institute of Reproduction and Endocrinology, Meiji University, Kanagawa, Japan. .,Division of Life Science, Graduate School of Agriculture, Meiji University, Kanagawa, Japan.
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Kinoshita J, Fushida S, Tsukada T, Oyama K, Okamoto K, Makino I, Nakamura K, Miyashita T, Tajima H, Takamura H, Ninomiya I, Ohta T. Efficacy of conversion gastrectomy following docetaxel, cisplatin, and S-1 therapy in potentially resectable stage IV gastric cancer. Eur J Surg Oncol 2015; 41:1354-60. [PMID: 26028256 DOI: 10.1016/j.ejso.2015.04.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [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: 03/19/2015] [Revised: 04/21/2015] [Accepted: 04/24/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Recent advances in gastric cancer chemotherapy have made macroscopic complete resection possible in some patients with stage IV disease. METHODS We retrospectively investigated the efficacy of multimodal therapy with combined docetaxel, cisplatin, and S-1 (DCS) and conversion gastrectomy in 57 patients with stage IV gastric cancer. RESULTS Of the 57 patients, 15 patients were categorized into potentially resectable case, which is defined as patients with single incurable factor including the upper abdominal para-aortic lymph node metastasis (16a2b1 PAN metastasis) or fewer than three peripheral liver metastases. The other 42 were categorized as initially unresectable. All of patients underwent DCS therapy, and then 34 patients underwent conversion gastrectomy. The 3-year overall survival (OS) rate among the patients who underwent conversion gastrectomy was 50.1% with MST of 29.9 months. They had significantly longer OS than patients who underwent DCS therapy alone (p < 0.01). Univariate analysis among the patents with conversion gastrectomy identified 16a2b1PAN metastasis, peritoneal metastasis, potential resectable case, R0 resection as significant prognostic factors. A 3-year OS in potential resectable cases was 92.9%. Multivariate analysis identified potential resectability as the only independent prognostic factor contributing to OS (HR 0.133, 95%CI 0.024-0. 744, p = 0.021). In contrast, clinical response was selected as the only independent prognostic factor in the subgroup of initially unresectable cases (HR 0.354, 95%CI 0.151-0.783, p = 0.021). CONCLUSION Patients with potentially resectable disease had a remarkably good prognosis among stage IV gastric cancer patients, and might be ideal candidates for conversion gastrectomy following DCS therapy.
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Affiliation(s)
- J Kinoshita
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - S Fushida
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan.
| | - T Tsukada
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Oyama
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Okamoto
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - I Makino
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - K Nakamura
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - T Miyashita
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - H Tajima
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - H Takamura
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - I Ninomiya
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
| | - T Ohta
- Department of Gastroenterologic Surgery Division of Cancer Medicine, Graduate School of Medicine Science, Kanazawa University, 13-1 Takaramachi, Kanazawa, 920-8641, Japan
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Katano S, Tsukada T, Saito R, Fujito T, Neki T, Katayose M, Hashimoto A. The difference in cardiopulmonary response to exercise between heart failure with and without pulmonary hypertension. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Ramadhani D, Tofrizal A, Tsukada T, Yashiro T. Histochemical Analysis of Laminin α Chains in Diethylstilbestrol-Induced Prolactinoma in Rats. Acta Histochem Cytochem 2015; 48:69-73. [PMID: 26019376 PMCID: PMC4427567 DOI: 10.1267/ahc.14067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/16/2015] [Indexed: 11/22/2022] Open
Abstract
Laminin, a major basement membrane component, is important in structural support and cell proliferation and differentiation. Its 19 isoforms are assemblies of α, β, and γ chains, and the α chains (α1-5) determine the isoform characteristics. Although our previous studies showed alterations in α chain expressions during anterior pituitary development, their expressions in pituitary tumors yet to be determined. The present study used a rat model of diethylstilbestrol (DES)-induced prolactinoma to examine α chain expressions during prolactinoma tumorigenesis (0–12 weeks of DES treatment) by in situ hybridization and immunohistochemistry. mRNA of α1, α3, and α4 chains was detected in control and after 4 weeks of DES treatment. These expressions were undetectable after 8 weeks of DES treatment and in prolactinoma (12 weeks of DES treatment). Immunohistochemistry showed that the α1 chain was localized in some anterior pituitary cells in control and after 4 weeks of treatment and in endothelial cells after 8 weeks of treatment. The α3 and α4 chains were expressed in endothelial cells, and immunoreactivity and the number of immunopositive cells decreased during DES treatment. These findings suggest that alteration of laminin α chains is related to abnormal cell proliferation and neovascularization during development of DES-induced prolactinoma.
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Affiliation(s)
- Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Alimuddin Tofrizal
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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Ramadhani D, Tsukada T, Fujiwara K, Azuma M, Kikuchi M, Yashiro T. Changes in laminin chain expression in pre- and postnatal rat pituitary gland. Acta Histochem Cytochem 2014; 47:231-7. [PMID: 25861129 PMCID: PMC4387244 DOI: 10.1267/ahc.14031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 08/26/2014] [Indexed: 12/13/2022] Open
Abstract
Cell–matrix interaction is required for tissue development. Laminin, a major constituent of the basement membrane, is important for structural support and as a ligand in tissue development. Laminin has 19 isoforms, which are determined by combinational assembly of five α, three β, and three γ chains (eg, laminin 121 is α1, β2, and γ1). However, no report has identified the laminin isoforms expressed during pituitary development. We used in situ hybridization to investigate all laminin chains expressed during rat anterior pituitary development. The α5 chain was expressed during early pituitary development (embryonic day 12.5–15.5). Expression of α1 and α4 chains was noted in vasculature cells at embryonic day 19.5, but later diminished. The α1 chain was re-expressed in parenchymal cells of anterior lobe from postnatal day 10 (P10), while the α4 chain was present in vasculature cells from P30. The α2 and α3 chains were transiently expressed in vasculature cells and anterior lobe, respectively, only at P30. Widespread distribution of β and γ chains was also observed during development. These findings suggest that numerous laminin isoforms are involved in anterior pituitary gland development and that alteration of the expression pattern is required for proper development of the gland.
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Affiliation(s)
- Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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Tsukada T, Fujiwara K, Horiguchi K, Azuma M, Ramadhani D, Tofrizal A, Batchuluun K, Maliza R, Syaidah R, Kikuchi M, Yashiro T. Folliculostellate cells are required for laminin release from gonadotrophs in rat anterior pituitary. Acta Histochem Cytochem 2014; 47:239-45. [PMID: 25861130 PMCID: PMC4387245 DOI: 10.1267/ahc.14036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 08/26/2014] [Indexed: 11/22/2022] Open
Abstract
The anterior pituitary gland is organized tissue comprising hormone-producing cells and folliculostellate (FS) cells. FS cells interconnect to form a meshwork, and their cytoplasmic processes are anchored by a basement membrane containing laminin. Recently, we developed a three-dimensional (3D) cell culture that reproduces this FS cell architecture. In this study of the novel function of FS cells, we used transgenic rats that express green fluorescent protein in FS cells for the 3D culture. Anterior pituitary cells were cultured with different proportions of FS cells (0%, 5%, 10%, and 20%). Anterior pituitary cells containing 5-20% FS cells formed round/oval cell aggregates, whereas amorphous cell aggregates were formed in the absence of FS cells. Interestingly, immunohistochemistry showed laminin-immunopositive cells instead of extracellular laminin deposition in FS cell-deficient cell aggregates. Double-immunostaining revealed that these laminin-immunopositive cells were gonadotrophs. Laminin mRNA expression did not differ in relation to the presence or absence of FS cells. When anterior pituitary cells with no FS cells were cultured with FS cell-conditioned medium, the proportion of laminin-immunopositive cells was lower than in control. These results suggest that a humoral factor from FS cells is required for laminin release from gonadotrophs.
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Affiliation(s)
- Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University
| | - Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Alimuddin Tofrizal
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Khongorzul Batchuluun
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rita Maliza
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rahimi Syaidah
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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Fujikawa K, Migita K, Shigemitsu Y, Umeda M, Nonaka F, Tamai M, Nakamura H, Mizokami A, Tsukada T, Origuchi T, Yonemitsu N, Yasunami M, Kawakami A, Eguchi K. MEFV gene polymorphisms and TNFRSF1A mutation in patients with inflammatory myopathy with abundant macrophages. Clin Exp Immunol 2014; 178:224-8. [PMID: 24965843 DOI: 10.1111/cei.12407] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2014] [Indexed: 12/29/2022] Open
Abstract
Inflammatory myopathy with abundant macrophages (IMAM) has recently been proposed as a new clinical condition. Although IMAM shares certain similarities with other inflammatory myopathies, the mechanisms responsible for this condition remain unknown. Patients with familial Mediterranean fever (FMF) and tumour necrosis factor receptor-associated periodic syndrome (TRAPS) also often develop myalgia. We therefore investigated the polymorphisms or mutations of MEFV and TNFRSF1A genes in patients with IMAM to identify their potential role in this condition. We analysed the clinical features of nine patients with IMAM and sequenced exons of the MEFV and TNFRSF1A genes. The patients with IMAM had clinical symptoms such as myalgia, muscle weakness, erythema, fever and arthralgia. Although none of the patients were diagnosed with FMF or TRAPS, seven demonstrated MEFV polymorphisms (G304R, R202R, E148Q, E148Q-L110P and P369S-R408Q), and one demonstrated a TNFRSF1A mutation (C43R). These results suggest that MEFV gene polymorphisms and TNFRSF1A mutation are susceptibility and modifier genes in IMAM.
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Affiliation(s)
- K Fujikawa
- Department of Rheumatology, Japan Community Health Care Organization, Isahaya General Hospital, Isahaya, Japan
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Bliss KT, Tsukada T, Novak SM, Dorovkov MV, Shah SP, Nworu C, Kostyukova AS, Gregorio CC. Phosphorylation of tropomodulin1 contributes to the regulation of actin filament architecture in cardiac muscle. FASEB J 2014; 28:3987-95. [PMID: 24891520 DOI: 10.1096/fj.13-246009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 05/19/2014] [Indexed: 01/09/2023]
Abstract
Tropomodulin1 (Tmod1) is an actin-capping protein that plays an important role in actin filament pointed-end dynamics and length in striated muscle. No mechanisms have been identified to explain how Tmod1's functional properties are regulated. The purpose of this investigation was to explore the functional significance of the phosphorylation of Tmod1 at previously identified Thr54. Rat cardiomyocytes were assessed for phosphorylation of Tmod1 using Pro-Q Diamond staining and (32)P labeling. Green fluorescent protein-tagged phosphorylation-mimic (T54E) and phosphorylation-deficient (T54A) versions of Tmod1 were expressed in cultured cardiomyocytes, and the ability of these mutants to assemble and restrict actin lengths was observed. We report for the first time that Tmod1 is phosphorylated endogenously in cardiomyocytes, and phosphorylation at Thr54 causes a significant reduction in the ability of Tmod1 to assemble to the pointed end compared with that of the wild type (WT; 48 vs. 78%, respectively). In addition, overexpression of Tmod1-T54E restricts actin filament lengths by only ∼3%, whereas Tmod1-WT restricts the lengths significantly by ∼8%. Finally, Tmod1-T54E altered the actin filament-capping activity in polymerization assays. Taken together, our data suggest that pointed-end assembly and Tmod1's thin filament length regulatory function are regulated by its phosphorylation state.
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Affiliation(s)
- Katherine T Bliss
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, Arizona, USA
| | - Takehiro Tsukada
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, Arizona, USA
| | - Stefanie Mares Novak
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, Arizona, USA
| | | | - Samar P Shah
- Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Piscataway, New Jersey, USA; and
| | - Chinedu Nworu
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, Arizona, USA
| | - Alla S Kostyukova
- Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Piscataway, New Jersey, USA; and School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington, USA
| | - Carol C Gregorio
- Department of Cellular and Molecular Medicine and Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, Arizona, USA;
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Fujikawa K, Migita K, Umeda M, Nonaka F, Kawashiri SY, Iwamoto N, Ichinose K, Tamai M, Nakamura H, Mizokami A, Tsukada T, Origuchi T, Ueki Y, Yasunami M, Kawakami A, Eguchi K. OP0225 Mefv and TNFRSF1A Gene Mutations in Patients with Inflammatory Myopathy with Abundant Macrophages. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1474] [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: 11/04/2022]
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37
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Origuchi T, Arima K, Kawashiri SY, Tamai M, Nakamura H, Kawakami A, Tsukada T, Miyashita T, Aramaki T, Furuyama M, Kawabe Y, Iwanaga N, Ueki Y, Fukuda T, Eguchi K. OP0117 Surveillance of the Outcome of Remitting Seronegative Symmetrical Synovitis with Pitting Edema (RS3PE) Syndrome. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4160] [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: 11/04/2022]
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38
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Horai Y, Takatani A, Nishino A, Nakashima Y, Suzuki T, Fujikawa K, Tsukada T, Tsuboi M, Matsuoka N, Migita K, Aramaki T, Ueki Y, Kawashiri SY, Iwamoto N, Ichinose K, Tamai M, Nakamura H, Origuchi T, Kawakami A. SAT0261 Abatacept is A Suitable Biologic Disease Modifying Anti-Rheumatic Drugs in Patients with Anti-Ss-A Antibodies-Positive Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3956] [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: 11/03/2022]
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39
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Fujiwara K, Maliza R, Tofrizal A, Batchuluun K, Ramadhani D, Tsukada T, Azuma M, Horiguchi K, Kikuchi M, Yashiro T. In situ hybridization analysis of the temporospatial expression of the midkine/pleiotrophin family in rat embryonic pituitary gland. Cell Tissue Res 2014; 357:337-44. [PMID: 24816986 DOI: 10.1007/s00441-014-1875-z] [Citation(s) in RCA: 6] [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] [Received: 12/18/2013] [Accepted: 03/12/2014] [Indexed: 01/04/2023]
Abstract
Pituitary gland development is controlled by numerous signaling molecules, which are produced in the oral ectoderm and diencephalon. A newly described family of heparin-binding growth factors, namely midkine (MK)/pleiotrophin (PTN), is involved in regulating the growth and differentiation of many tissues and organs. Using in situ hybridization with digoxigenin-labeled cRNA probes, we detected cells expressing MK and PTN in the developing rat pituitary gland. At embryonic day 12.5 (E12.5), MK expression was localized in Rathke's pouch (derived from the oral ectoderm) and in the neurohypophyseal bud (derived from the diencephalon). From E12.5 to E19.5, MK mRNA was expressed in the developing neurohypophysis, and expression gradually decreased in the developing adenohypophysis. To characterize MK-expressing cells, we performed double-staining of MK mRNA and anterior pituitary hormones. At E19.5, no MK-expressing cells were stained with any hormone. In contrast, PTN was expressed only in the neurohypophysis primordium during all embryonic stages. In situ hybridization clearly showed that MK was expressed in primitive (immature/undifferentiated) adenohypophyseal cells and neurohypophyseal cells, whereas PTN was expressed only in neurohypophyseal cells. Thus, MK and PTN might play roles as signaling molecules during pituitary development.
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Affiliation(s)
- Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan,
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40
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Horiguchi K, Fujiwara K, Higuchi M, Yoshida S, Tsukada T, Ueharu H, Chen M, Hasegawa R, Takigami S, Ohsako S, Yashiro T, Kato T, Kato Y. Expression of chemokine CXCL10 in dendritic-cell-like S100β-positive cells in rat anterior pituitary gland. Cell Tissue Res 2014; 357:757-65. [PMID: 24770897 DOI: 10.1007/s00441-014-1864-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/26/2014] [Indexed: 12/30/2022]
Abstract
Chemokines are mostly small secreted polypeptides whose signals are mediated by seven trans-membrane G-protein-coupled receptors. Their functions include the control of leukocytes and the intercellular mediation of cell migration, proliferation, and adhesion in several tissues. We have previously revealed that the CXC chemokine ligand 12 (CXCL12) and its receptor 4 (CXCR4) are expressed in the anterior pituitary gland, and that the CXCL12/CXCR4 axis evokes the migration and interconnection of S100β-protein-positive cells (S100β-positive cells), which do not produce classical anterior pituitary hormones. However, little is known of the cells producing the other CXCLs and CXCRs or of their characteristics in the anterior pituitary. We therefore examined whether CXCLs and CXCRs occurred in the rat anterior pituitary lobe. We used reverse transcription plus the polymerase chain reaction to analyze the expression of Cxcl and Cxcr and identified the cells that expressed Cxcl by in situ hybridization. Transcripts of Cxcl10 and its receptor (Cxcr3 and toll-like receptor 4, Tlr4) were clearly detected: cells expressing Cxcl10 and Tlr4 were identified amongst S100β-positive cells and those expressing Cxcr3 amongst adrenocorticotropic hormone (ACTH)-producing cells. We also investigated Cxcl10 expression in subpopulations of S100β-positive cells. We separated cultured S100β-positive cells into the round-type (dendritic-cell-like) and process-type (astrocyte- or epithelial-cell-like) by their adherent activity to laminin, a component of the extracellular matrix; CXCL10 was expressed only in round-type S100β-positive cells. Thus, CXCL10 produced by a subpopulation of S100β-positive cells probably exerts an autocrine/paracrine effect on S100β-positive cells and ACTH-producing cells in the anterior lobe.
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Affiliation(s)
- Kotaro Horiguchi
- Laboratory of Anatomy and Cell Biology, Department of Health Sciences, Kyorin University, Tokyo, Japan
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Tsukada T, Kouki T, Fujiwara K, Ramadhani D, Horiguchi K, Kikuchi M, Yashiro T. Reassembly of anterior pituitary organization by hanging drop three-dimensional cell culture. Acta Histochem Cytochem 2013; 46:121-7. [PMID: 24023396 PMCID: PMC3766829 DOI: 10.1267/ahc.13015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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: 05/17/2013] [Accepted: 07/09/2013] [Indexed: 11/22/2022] Open
Abstract
The anterior pituitary gland comprises 5 types of hormone-producing cells and non-endocrine cells, such as folliculostellate (FS) cells. The cells form a lobular structure surrounded by extracellular matrix (ECM) but are not randomly distributed in each lobule; hormone-producing cells have affinities for specific cell types (topographic affinity), and FS cells form a homotypic meshwork. To determine whether this cell and ECM organization can be reproduced in vitro, we developed a 3-dimensional (3D) model that utilizes hanging drop cell culture. We found that the topographic affinities of hormone-producing cells were indeed maintained (ie, GH to ACTH cells, GH to TSH cells, PRL to LH/FSH cells). Fine structures in hormone-producing cells retained their normal appearance. In addition, FS cells displayed well-developed cytoplasmic protrusions, which interconnected with adjacent FS cells to form a 3D meshwork. In addition, reassembly of gap junctions and pseudofollicles among FS cells was observed in cell aggregates. Major ECM components—collagens and laminin—were deposited and distributed around the cells. In sum, the dissociated anterior pituitary cells largely maintained their in vivo anterior pituitary architectures. This culture system appears to be a powerful experimental tool for detailed analysis of anterior pituitary cell organization.
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Affiliation(s)
- Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Tom Kouki
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Kotaro Horiguchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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Jindatip D, Fujiwara K, Horiguchi K, Tsukada T, Kouki T, Yashiro T. Changes in fine structure of pericytes and novel desmin-immunopositive perivascular cells during postnatal development in rat anterior pituitary gland. Anat Sci Int 2013; 88:196-203. [PMID: 23681702 DOI: 10.1007/s12565-013-0180-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 05/02/2013] [Indexed: 11/26/2022]
Abstract
Pericytes are perivascular cells associated with capillaries. We previously demonstrated that pericytes, identified by desmin immunohistochemistry, produce type I and III collagens in the anterior pituitary gland of adult rats. In addition, we recently used desmin immunoelectron microscopy to characterize a novel type of perivascular cell, dubbed a desmin-immunopositive perivascular cell, in the anterior pituitary. These two types of perivascular cells differ in fine structure. The present study attempted to characterize the morphological features of pituitary pericytes and novel desmin-immunopositive perivascular cells during postnatal development, in particular their role in collagen synthesis. Desmin immunostaining revealed numerous perivascular cells at postnatal day 5 (P5) and P10. Transmission electron microscopy showed differences in the fine structure of the two cell types, starting at P5. Pericytes had well-developed rough endoplasmic reticulum and Golgi apparatus at P5 and P10. The novel desmin-immunopositive perivascular cells exhibited dilated cisternae of rough endoplasmic reticulum at P5-P30. In addition, during early postnatal development in the gland, a number of type I and III collagen-expressing cells were observed, as were high expression levels of these collagen mRNAs. We conclude that pituitary pericytes and novel desmin-immunopositive perivascular cells contain well-developed cell organelles and that they actively synthesize collagens during the early postnatal period.
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Affiliation(s)
- Depicha Jindatip
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
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43
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Ninomiya I, Osugi H, Fujimura T, Fushida S, Okamoto K, Maruzen S, Oyama K, Kinoshita J, Tsukada T, Kitagawa H, Takamura H, Nakagawara H, Tajima H, Hayashi H, Makino I, Ohta T. Thoracoscopic esophagectomy with extended lymph node dissection in the left lateral position: technical feasibility and oncologic outcomes. Dis Esophagus 2013; 27:159-67. [PMID: 23551804 DOI: 10.1111/dote.12071] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of this study was to estimate the technical and oncologic feasibility of video-assisted thoracoscopic radical esophagectomy (VATS) in the left lateral position. From January 2003 to December 2011, 132 patients with esophageal cancer underwent VATS. The mean duration of the thoracic procedure and the entire procedure was 294 ± 88 and 623 ± 123 minutes, respectively. Mean blood loss during the thoracic procedure and the entire procedure was 313 ± 577 and 657 ± 719 g, respectively. The mean number of dissected thoracic lymph nodes was 32.6 ± 12.9. There were four in-hospital deaths (3.0%); two patients (1.5%) died of acute respiratory distress syndrome and two patients (1.5%) died of tumor progression. Postoperative unilateral or bilateral recurrent laryngeal nerve (RLN) palsy, or pneumonia was found in 33 (25.0%), 21 (15.9%), and 27(20.5%) patients, respectively. The patients were divided into the first 66 patients who underwent VATS (Group 1) and the subsequent 66 patients (Group 2). The numbers of cases who underwent neoadjuvant or induction chemotherapy for T4 tumor and intrathoracic anastomosis were higher in Group 2 than in Group 1. The duration of the procedure, amount of blood loss, and the number of dissected thoracic lymph nodes were not different between the two groups. The total number of dissected lymph nodes was higher in Group 2 than in Group 1 (72.6 ± 27.8 vs. 62.6 ± 21.6, P = 0.023). The rate of bilateral RLN palsy was less in Group 2 than in Group 1 (7.6% vs. 24.2%, P = 0.042). The mean follow-up period was 38.7 months. Primary recurrence consisted of hematogenous, lymphatic, peritoneal dissemination, pleural dissemination, and locoregional in 15 (11.3%), 20 (15.1%), 3 (2.3%), 4 (3.0%), and 5 patients (3.8%), respectively. The rate of regional lymph node recurrence within the dissection field was only 4.5%. The prognosis of patients with lymph node metastasis was significantly poorer than that of patients without lymph node metastasis. However, the prognosis of the 11 cases that had metastasis only around RLNs was similar to that of node-negative cases. Thirteen patients with pathological remnant tumor (R1 or R2) did not survive longer than 5 years at present. The overall 5-year survival rate of stage I, II, and III disease after curative VATS was 82.2%, 77.0%, and 52.3%, respectively. Expansion of VATS criteria for patients after induction chemotherapy for T4 tumor or thoracoscopic anastomosis did not adversely affect the surgical results by experience. Although the VATS procedure is accompanied by a certain degree of morbidity including RLN palsy and pulmonary complications, VATS has an excellent locoregional control effect. In addition, the favorable survival after VATS shows that the procedure is oncologically feasible.
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Affiliation(s)
- I Ninomiya
- Gastroenterologic Surgery, Department of Oncology, Division of Cancer Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa
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Hoshida K, Miwa Y, Miyakoshi M, Tsukada T, Yusu S, Yoshino H, Ikeda T. T-Wave Alternans and Heart Rate Turbulence in Patients After Myocardial Infarction. Circ J 2013; 77:830. [DOI: 10.1253/circj.cj-12-1379] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kyoko Hoshida
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Yosuke Miwa
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Mutsumi Miyakoshi
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takehiro Tsukada
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Satoru Yusu
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Hideaki Yoshino
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takanori Ikeda
- Department of Cardiovascular Medicine, Toho University Faculty of Medicine
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45
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Hoshida K, Miwa Y, Miyakoshi M, Tsukada T, Yusu S, Yoshino H, Ikeda T. Independent and Complementary Utility of Ambulatory Electrocardiogram-Based T-Wave Alternans and Heart Rate Turbulence for Predicting Major Cardiac Events in Patients After Myocardial Infarction. Circ J 2013; 77:1086. [DOI: 10.1253/circj.cj-12-1603] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kyoko Hoshida
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Yosuke Miwa
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Mutsumi Miyakoshi
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takehiro Tsukada
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Satoru Yusu
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Hideaki Yoshino
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takanori Ikeda
- Department of Cardiovascular Medicine, Toho University Faculty of Medicine
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Hoshida K, Miwa Y, Miyakoshi M, Tsukada T, Yusu S, Yoshino H, Ikeda T. Simultaneous Assessment of T-Wave Alternans and Heart Rate Turbulence on Holter Electrocardiograms as Predictors for Serious Cardiac Events in Patients After Myocardial Infarction. Circ J 2013; 77:432-8. [DOI: 10.1253/circj.cj-12-0789] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kyoko Hoshida
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Yosuke Miwa
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Mutsumi Miyakoshi
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takehiro Tsukada
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Satoru Yusu
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Hideaki Yoshino
- Second Department of Internal Medicine, Kyorin University School of Medicine
| | - Takanori Ikeda
- Department of Cardiovascular Medicine, Toho University Faculty of Medicine
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Miwa Y, Yoshino H, Hoshida K, Miyakoshi M, Tsukada T, Yusu S, Ikeda T. Risk stratification for serious arrhythmic events using nonsustained ventricular tachycardia and heart rate turbulence detected by 24-hour holter electrocardiograms in patients with left ventricular dysfunction. Ann Noninvasive Electrocardiol 2012; 17:260-7. [PMID: 22816545 DOI: 10.1111/j.1542-474x.2012.00522.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 11/29/2022] Open
Abstract
BACKGROUND Previous studies have described the clinical usefulness of the presence of nonsustained ventricular tachycardia (NSVT) and defined heart rate turbulence (HRT) in stratifying patients at risk. We prospectively assessed whether HRT can facilitate the predictive accuracy of NSVT for identifying patients at risk for serious arrhythmic events in patients with left ventricular (LV) dysfunction. METHODS We enrolled 299 consecutive patients with LV dysfunction (ejection fraction ≤ 40%) including ischemic (n = 184) and nonischemic causes (n = 115). The presence of NSVT was assessed on Holter electrocardiograms (ECGs). HRT was simultaneously measured from Holter ECGs, assessing two parameters: turbulence onset (TO) and turbulence slope (TS). HRT was considered positive when both TO and TS were abnormal. The end point was defined as of sudden cardiac death (SCD) and sustained ventricular tachyarrhythmias (VTs). RESULTS NSVT was documented in 93 patients (32.7%). For HRT assessment, 17 patients (5.6%) were not utilized. Of 282 patients, 68 (24.1%) were HRT positive. During follow-up of 960 ± 444 days, 14 patients (5.0%) reached the end point. NSVT, HRT, and diabetes were significantly associated with the end point. On multivariate analysis, NSVT had the strongest value for the end point, with an HR of 4.4 (95%CI, 1.4-14.3; P = 0.0138). When NSVT combined with HRT, the predictive accuracy is more increased, with an HR of 8.2 (95%CI, 2.9-23.3; P < 0.0001). The predictive values of the combination were higher than single use of NSVT or HRT. CONCLUSIONS HRT can facilitate the predictive accuracy of NSVT for identifying patients at risk for serious arrhythmic events in patients with LV dysfunction.
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Affiliation(s)
- Yosuke Miwa
- Second Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan
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Ramadhani D, Tsukada T, Fujiwara K, Horiguchi K, Kikuchi M, Yashiro T. Laminin isoforms and laminin-producing cells in rat anterior pituitary. Acta Histochem Cytochem 2012; 45:309-15. [PMID: 23209340 PMCID: PMC3499700 DOI: 10.1267/ahc.12028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 08/07/2012] [Indexed: 12/31/2022] Open
Abstract
Laminin is a key component of the basement membrane and is involved in the structural scaffold and in cell proliferation and differentiation. Research has identified 19 laminin isoforms, which are assemblies of α, β, and γ chains (eg, the α1, β1, and γ1 chains form the laminin 111 isoform). Although laminin is known to be present in the anterior pituitary, the specific laminin isoforms have not been identified. This study used molecular biological and histochemical techniques-namely, RT-PCR, immunohistochemistry, and in situ hybridization-to identify the laminin isoforms and laminin-producing cells in rat anterior pituitary. RT-PCR showed that laminin α1, α3, and α4 genes were expressed in anterior pituitary. Immunohistochemistry revealed laminin α1 in gonadotrophs and laminin α4 in almost all vascular endothelial cells. Laminin α3 was seen in a subset of vascular endothelial cells. We then performed in situ hybridization to localize β and γ chains in these cells and found that laminin β1, β2, and γ1 were expressed in gonadotrophs and that laminin β1 and γ1 were expressed in endothelial cells. In conclusion, we identified gonadotroph-type (laminin 111 and 121) and vascular-type (laminin 411 and 311) laminin isoforms in rat anterior pituitary.
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Affiliation(s)
- Dini Ramadhani
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Kotaro Horiguchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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Yusu S, Mera H, Hoshida K, Miyakoshi M, Miwa Y, Tsukada T, Yoshino H, Ikeda T. Selective site pacing from the right ventricular mid-septum. Follow-up of lead performance and procedure technique. Int Heart J 2012; 53:113-6. [PMID: 22688315 DOI: 10.1536/ihj.53.113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Pacing from the right ventricular (RV) apex is associated with adverse effects such as heart failure and atrial fibrillation. We attempted pacing from the RV mid-septum, which is theoretically a more physiological pacing site. A total of 172 consecutive patients with indications for permanent pacemaker implantation were studied. A screw-in lead and a curved stylet were used for lead positioning on the RV mid-septum. Pacemaker indices were evaluated at implantation and one year later. As an electrocardiographic parameter, QRS duration was measured in lead II. These data were compared to those of 66 patients subjected to conventional RV apical pacing. Lead placement was successful in all patients of RV mid-septal pacing. There were no technical problems during or after the procedure. The cumulative percentage of ventricular pacing at one year postimplantation was 85 ± 24 % in the SSP group. Sensing, pacing threshold, and lead impedance in the SSP group remained clinically stable over one year. When these measurements were compared between the SSP and AP groups, the pacing threshold and the lead impedance at one year postimplantation in the SSP group were higher (P < 0.05) and lower (P < 0.01), respectively, than those of the AP group. The mean QRS duration was markedly shorter (123 ± 16 versus 150 ± 18 msec, P < 0.0001). Selective site pacing from the RV mid-septum is feasible and results in less conduction delay compared to conventional RV apical pacing, and its procedure seems to be more physiological in permanent pacemaker implantation.
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Affiliation(s)
- Satoru Yusu
- Second Department of Internal Medicine, Kyorin University School of Medicine, Japan
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Horiguchi K, Kouki T, Fujiwara K, Tsukada T, Ly F, Kikuchi M, Yashiro T. Expression of the proteoglycan syndecan-4 and the mechanism by which it mediates stress fiber formation in folliculostellate cells in the rat anterior pituitary gland. J Endocrinol 2012; 214:199-206. [PMID: 22645300 DOI: 10.1530/joe-12-0156] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Folliculostellate (FS) cells in the anterior pituitary gland appear to have multifunctional properties. FS cells connect to each other at gap junctions and thereby form a histological and functional network. We have performed a series of studies on network formation in FS cells and recently reported that FS cells markedly prolong their cytoplasmic processes and form numerous interconnections with neighboring FS cells in the presence of laminin, an extracellular matrix (ECM) component of the basement membrane. In this study, we investigated the mechanism of this extension of FS cell cytoplasmic processes under the influence of laminin and found that laminin promoted stress fiber formation within FS cells. Next, we noted that formation of stress fibers in FS cells was mediated by syndecan-4, a transmembrane proteoglycan that binds ECM and soluble factors via their extracellular glycosaminoglycan chain. We then observed that expressions of syndecan-4 and α-actinin (a microfilament bundling protein that cross-links actin stress fibers in FS cells) were upregulated by laminin. Using specific siRNA of syndecan-4, actin polymerization of FS cells was inhibited. Our findings suggest that FS cells received a signal from laminin-syndecan-4 interaction, which resulted in morphological changes, and that the formation of a morphological and functional network in FS cells was transduced by a syndecan-4-dependent mechanism in the presence of ECM.
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Affiliation(s)
- Kotaro Horiguchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan.
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