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Yokota S, Kaur S, VanderHorst VG, Saper CB, Chamberlin NL. Respiratory-related outputs of glutamatergic, hypercapnia-responsive parabrachial neurons in mice. J Comp Neurol 2015; 523:907-20. [PMID: 25424719 DOI: 10.1002/cne.23720] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/20/2014] [Accepted: 11/21/2014] [Indexed: 01/16/2023]
Abstract
In patients with obstructive sleep apnea, airway obstruction during sleep produces hypercapnia, which in turn activates respiratory muscles that pump air into the lungs (e.g., the diaphragm) and that dilate and stabilize the upper airway (e.g., the genioglossus). We hypothesized that these responses are facilitated by glutamatergic neurons in the parabrachial complex (PB) that respond to hypercapnia and project to premotor and motor neurons that innervate the diaphragm and genioglossus muscles. To test this hypothesis, we combined c-Fos immunohistochemistry with in situ hybridization for vGluT2 or GAD67 or with retrograde tracing from the ventrolateral medullary region that contains phrenic premotor neurons, the phrenic motor nucleus in the C3-C5 spinal ventral horn, or the hypoglossal motor nucleus. We found that hypercapnia (10% CO2 for 2 hours) activated c-Fos expression in neurons in the external lateral, lateral crescent (PBcr), and Kölliker-Fuse (KF) PB subnuclei and that most of these neurons were glutamatergic and virtually none γ-aminobutyric acidergic. Numerous CO2 -responsive neurons in the KF and PBcr were labeled after retrograde tracer injection into the ventrolateral medulla or hypoglossal motor nuclei, and in the KF after injections into the spinal cord, making them candidates for mediating respiratory-facilitatory and upper-airway-stabilizing effects of hypercapnia.
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Urata Y, Sueoka-Aragane N, Katakami N, Satouchi M, Yokota S, Aoe K, Iwanaga K, Otsuka K, Kimura S, Negoro S. Monitoring Egfr T790M Using Plasma Dna in Lung Cancer Patients Treated with Egfr Tyrosine Kinase Inhibitor in a Prospective Observational Study. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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53
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Nishiyama A, Katakami N, Morita S, Seto T, Iwamoto Y, Hirashima T, Kaneda H, Kawaguchi T, Matsuoka H, Yokota S, Nishimura T, Okada M, Fujita M, Shibata K, Urata Y, Yamamoto N, Nakagawa K, Nakanishi Y. Randomized Phase III Study Comparing Gefitinib (G) with Erlotinib (E) in Patients (Pts) with Previously Treated Advanced Lung Adenocarcinoma (La): Wjog 5108L. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.50] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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54
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Yoshida O, Kimura S, Dou L, Matta B, Yokota S, Stolz D, Geller D, Thomson AW. DAP12 deficiency in liver allografts results in enhanced donor DC migration, augmented effector T cell responses and abrogation of transplant tolerance. Am J Transplant 2014; 14:1791-805. [PMID: 24935196 PMCID: PMC4107008 DOI: 10.1111/ajt.12757] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/28/2014] [Accepted: 03/19/2014] [Indexed: 01/25/2023]
Abstract
Liver interstitial dendritic cells (DC) have been implicated in immune regulation and tolerance induction. We found that the transmembrane immuno-adaptor DNAX-activating protein of 12 kDa (DAP12) negatively regulated conventional liver myeloid (m) DC maturation and their in vivo migratory and T cell allostimulatory ability. Livers were transplanted from C57BL/6(H2(b) ) (B6) WT or DAP12(-/-) mice into WT C3H (H2(k) ) recipients. Donor mDC (H2-K(b+) CD11c(+) ) were quantified in spleens by flow cytometry. Anti-donor T cell reactivity was evaluated by ex vivo carboxyfluorescein diacetate succinimidyl ester-mixed leukocyte reaction and delayed-type hypersensitivity responses, while T effector and regulatory T cells were determined by flow analysis. A threefold to fourfold increase in donor-derived DC was detected in spleens of DAP12(-/-) liver recipients compared with those given WT grafts. Moreover, pro-inflammatory cytokine gene expression in the graft, interferon gamma (IFNγ) production by graft-infiltrating CD8(+) T cells and systemic levels of IFNγ were all elevated significantly in DAP12(-/-) liver recipients. DAP12(-/-) grafts also exhibited reduced incidences of CD4(+) Foxp3(+) cells and enhanced CD8(+) T cell IFNγ secretion in response to donor antigen challenge. Unlike WT grafts, DAP12(-/-) livers failed to induce tolerance and were rejected acutely. Thus, DAP12 expression in liver grafts regulates donor mDC migration to host lymphoid tissue, alloreactive T cell responses and transplant tolerance.
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Yoshida H, Nishihara H, Yokota S, Ohyanagi M, Nakaoki T. Field-Swept NMR Spectra of 11B in Pyrex Glass and 93Nb in NbN Perturbed by Quadrupole Interaction. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/zna-1998-6-709] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
NMR experiments of 11B by both field-swept and high-resolution NMR are reported to probe the electric field gradient at boron sites and its distribution in Pyrex glass. Both spectra are successfully interpreted with the same set of parameters. It is stressed that field-swept NMR experiments to observe total powder spectrum can be helpful to get information on electric field gradients and asymmetry pa-rameters if there exist many nonequivalent sites of atoms, since satellite transitions are affected by the larger first-order quadrupole effect. Field-swept NMR of 93Nb in superconducting NbN powder, prepared by self-propagating high-temperature synthesis, is also reported. A very broad field-swept spectrum disturbed by quadrupole interaction has been observed. The spectrum is simulated by assuming distributions in electric field gradient and Knight shift at Nb sites. It is stressed that a combination of experiments at separated frequencies is important.
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Koshiya N, Oku Y, Yokota S, Oyamada Y, Yasui Y, Okada Y. Anatomical and functional pathways of rhythmogenic inspiratory premotor information flow originating in the pre-Bötzinger complex in the rat medulla. Neuroscience 2014; 268:194-211. [DOI: 10.1016/j.neuroscience.2014.03.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 03/02/2014] [Accepted: 03/04/2014] [Indexed: 01/30/2023]
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57
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How R, Kimura S, Yokota S, Klune J, Spadaro A, Du Q, Tsung A, Geller D. The Pro-apoptotic Protein XIAP-associated Factor 1 (XAF1) Promotes Activation of Caspase 3 and Contributes to Liver Damage in Liver Ischemia/Reperfusion through the Apoptotic Pathway. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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58
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Yokota S, Kimura S, Klune J, Du Q, Dou L, Murase N, Tsung A, Geller D. Interferon Regulatory Factor-1 (IRF-1) Contributes to Hepatic Ischemia Reperfusion Injury in Allogeneic Liver Transplantation. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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59
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Sato T, Nishimura K, Nozawa T, Kanetaka T, Kikuchi M, Hara R, Sakurai N, Yamazaki K, Takeuchi Y, Yokota S. PReS-FINAL-2110: Tocilizumab for patients with oligoarticular juvenile idiopathic arthritis refractory to conventional therapy. Pediatr Rheumatol Online J 2013. [PMCID: PMC4044449 DOI: 10.1186/1546-0096-11-s2-p122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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60
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Kikuchi M, Nozawa T, Kanetaka T, Nishimura K, Hara R, Yamazaki K, Sato T, Sakurai N, Yokota S. PReS-FINAL-2172: Efficacy of corticosteroids and intravenous cyclophosphamide for patients with juvenile systemic sclerosis. Pediatr Rheumatol Online J 2013. [PMCID: PMC4043886 DOI: 10.1186/1546-0096-11-s2-p184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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61
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Fujiki Y, Yokota S, Okada Y, Oku Y, Tamura Y, Ishiguro M, Miwakeichi F. Standardization of size, shape and internal structure of spinal cord images: comparison of three transformation methods. PLoS One 2013; 8:e76415. [PMID: 24223702 PMCID: PMC3818318 DOI: 10.1371/journal.pone.0076415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 08/26/2013] [Indexed: 11/18/2022] Open
Abstract
Functional fluorescence imaging has been widely applied to analyze spatio-temporal patterns of cellular dynamics in the brain and spinal cord. However, it is difficult to integrate spatial information obtained from imaging data in specific regions of interest across multiple samples, due to large variability in the size, shape and internal structure of samples. To solve this problem, we attempted to standardize transversely sectioned spinal cord images focusing on the laminar structure in the gray matter. We employed three standardization methods, the affine transformation (AT), the angle-dependent transformation (ADT) and the combination of these two methods (AT+ADT). The ADT is a novel non-linear transformation method developed in this study to adjust an individual image onto the template image in the polar coordinate system. We next compared the accuracy of these three standardization methods. We evaluated two indices, i.e., the spatial distribution of pixels that are not categorized to any layer and the error ratio by the leave-one-out cross validation method. In this study, we used neuron-specific marker (NeuN)-stained histological images of transversely sectioned cervical spinal cord slices (21 images obtained from 4 rats) to create the standard atlas and also to serve for benchmark tests. We found that the AT+ADT outperformed other two methods, though the accuracy of each method varied depending on the layer. This novel image standardization technique would be applicable to optical recording such as voltage-sensitive dye imaging, and will enable statistical evaluations of neural activation across multiple samples.
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Namba Y, Nakazawa Y, Niinaka M, Yano Y, Yoneda T, Kimura H, Mori M, Okada T, Yamaguchi T, Yokota S. Characteristics of Non-Small Cell Lung Cancer with Rare Epidermal Growth Factor Receptor Gene Mutations. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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63
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Kaneko H, Tsutsumi Y, Ohshiro M, Iwai T, Kuroda J, Horiike S, Yokota S, Taniwaki M. Up-Front Autologous Stem Cell Transplantation for Elderly Patients with Diffuse Large B-Cell Lymphoma. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.94] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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64
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Nakatsuji N, Nishizawa M, Namba Y, Nakata I, Yokota S. Effort of Patient Support Team for Chemotherapy in NHO National Toneyama Hospital. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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65
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Tsumori T, Oka T, Yokota S, Niu JG, Yasui Y. Intrapancreatic ganglia neurons receive projection fibers from melanocortin-4 receptor-expressing neurons in the dorsal motor nucleus of the vagus nerve of the mouse. Brain Res 2013; 1537:132-42. [PMID: 24028856 DOI: 10.1016/j.brainres.2013.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 08/26/2013] [Accepted: 09/04/2013] [Indexed: 11/19/2022]
Abstract
Melanocortin-4 receptor (MC4R)-expressing neurons are widely distributed in the central nervous system and play a crucial role in a variety of physiological functions including energy and glucose/insulin homeostasis. However, their neural pathways remain to be elucidated. In the present study, we examined a possible pathway from MC4R-expressing neurons in the dorsal motor nucleus of the vagus nerve (DMV) to the intrapancreatic ganglia using transgenic mice that express green fluorescent protein (GFP) under the control of the MC4R-promoter. Using immunofluorescence labeling, we demonstrated that GFP-immunoreactive (ir) nerve fibers were distributed in the intrapancreatic ganglia closely associated with the islets as well as among the acini. These GFP-ir fibers with bouton-like varicosities were frequently observed to surround ganglion cells immunoreactive for vasoactive intestinal polypeptide, a marker for postganglionic parasympathetic neurons. Using the pre-embedding immunoperoxidase method, we clearly showed that GFP-ir terminals formed synapses predominantly with dendrites and additionally with somata of the ganglion cells. Moreover, bilateral subdiaphragmatic vagotomy caused a marked loss of GFP immunoreactivity in the pancreas. Using a combination of retrograde tracing and immunohistochemistry, we finally demonstrated that nearly half of the pancreas-projecting DMV neurons were immunoreactive for GFP. These results suggest that MC4R-expressing DMV neurons may participate in the regulation of glucose/insulin homeostasis through their projections to the intrapancreatic ganglia.
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66
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Toda C, Shiuchi T, Kageyama H, Okamoto S, Coutinho EA, Sato T, Okamatsu-Ogura Y, Yokota S, Takagi K, Tang L, Saito K, Shioda S, Minokoshi Y. Extracellular signal-regulated kinase in the ventromedial hypothalamus mediates leptin-induced glucose uptake in red-type skeletal muscle. Diabetes 2013; 62:2295-307. [PMID: 23530005 PMCID: PMC3712028 DOI: 10.2337/db12-1629] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Leptin is a key regulator of glucose metabolism in mammals, but the mechanisms of its action have remained elusive. We now show that signaling by extracellular signal-regulated kinase (ERK) and its upstream kinase MEK in the ventromedial hypothalamus (VMH) mediates the leptin-induced increase in glucose utilization as well as its insulin sensitivity in the whole body and in red-type skeletal muscle of mice through activation of the melanocortin receptor (MCR) in the VMH. In contrast, activation of signal transducer and activator of transcription 3 (STAT3), but not the MEK-ERK pathway, in the VMH by leptin enhances the insulin-induced suppression of endogenous glucose production in an MCR-independent manner, with this effect of leptin occurring only in the presence of an increased plasma concentration of insulin. Given that leptin requires 6 h to increase muscle glucose uptake, the transient activation of the MEK-ERK pathway in the VMH by leptin may play a role in the induction of synaptic plasticity in the VMH, resulting in the enhancement of MCR signaling in the nucleus and leading to an increase in insulin sensitivity in red-type muscle.
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Kizawa T, Nozawa T, Kanetaka T, Hara T, Kikuchi M, Hara R, Miyamae T, Imagawa T, Mori M, Yokota S. FRI0239 Arthritis complicated with kawasaki disease is not TNF-alpha-dependent. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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68
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Yamamoto S, Yokota S, Wakui H, Kubota H, Itoh H, Fujii N. P35 Aminoglycoside antibiotics suppress the heat shock protein 70 function. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70280-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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69
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Yokota S, Tsukamoto N, Ohkosm Y, Sato T, Olkubo T, Yamamoto S, Kuwahara O, Tamura Y, Fujii N. P78 High prevalence of cross resistance to aminoglycosides and acquisition of ESBL in fluoroquinolone-resistant Escherichia coli. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70323-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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70
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Kobayashi N, Sato S, Mori M, Koike K, Yokota S. AB0827 Poor prognostic factors of interdtitial lung disease in juvenile dermatomyositis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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71
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Nozawa T, Kanetaka T, Kikuchi M, Kizawa T, Miyamae T, Imagawa T, Takahashi K, Yokota S. AB1209 A clinical and cutaneous pathological study of 11 patients with juvenile dermatomyositis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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72
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Miyamae T, Nozawa T, Kikuchi M, Kizawa T, Imagawa T, Yokota S. OP0178 Tocilizumab-effects on growth impairment in systemic juvenile idiopathic arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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73
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Kikuchi M, Kanetaka T, Nozawa T, Kizawa T, Miyamae T, Imagawa T, Yokota S. SAT0407 Association between the rates of enlarged nailfold capillaries and serum FDP-E levels reflects microvascular injuries in juvenile dermatomyositis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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74
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How R, Klune J, Kimura S, Yokota S, Spadaro A, Bartels C, Du Q, Tsung A, Murase N, Geller D. Interferon Regulatory Factor-1 (IRF-1) Upregulates the Pro-Apoptotic Protein XIAP-Associated Factor-1 (XAF-1) In Liver Transplant I/R Injury. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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75
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Takita E, Yokota S, Tahara Y, Hirao A, Aoki N, Nakamura Y, Nakao A, Shibata S. Biological clock dysfunction exacerbates contact hypersensitivity in mice. Br J Dermatol 2012; 168:39-46. [PMID: 22834538 DOI: 10.1111/j.1365-2133.2012.11176.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Immediate-type skin allergic reactions, such as passive cutaneous anaphylactic reaction, are associated with circadian rhythm, but the role of circadian mechanisms on delayed-type skin allergic reactions, such as contact hypersensitivity (CHS), remains uncertain. In mice, CHS, a T-cell-mediated immune response, is a classic model of human allergic contact dermatitis. OBJECTIVES We investigated whether biological clock dysfunction affects CHS pathogenesis in CLOCK mutant mice compared with wild-type (WT) mice. METHODS Mice were treated with 2,4,6-trinitro-1-chlorobenzene (TNCB) on the abdominal skin on day 0 (sensitization) and then treated with TNCB on the ears on day 5 (challenge). RESULTS We found that biological clock dysfunction resulted in severe inflammation. Ear swelling, serum immunoglobulin E level and mast cell number were significantly increased in CLOCK mutant mice compared with WT mice. These results provide evidence that CLOCK mutation promotes the T-helper type 2 immune response and exacerbates CHS. Corticosterone has a protective effect on CHS. The serum corticosterone level lost rhythmicity and showed a decreased daily level in CLOCK mutant mice compared with WT mice, supporting the exacerbating effect of CLOCK mutation on CHS. Adrenalectomy markedly worsened TNCB-induced CHS in WT mice but not in CLOCK mutant mice. In addition, dramatic dexamethasone-induced protection of CHS was observed in CLOCK mutant mice compared with WT mice. CONCLUSIONS The present results suggest that circadian rhythm might be an important factor in the regulation of CHS via corticosterone rhythmicity and/or level.
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