Masahito Tanaka

ORCID: 0000-0003-4009-1296
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About
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Research Areas
  • Ruminant Nutrition and Digestive Physiology
  • Reproductive Physiology in Livestock
  • Effects of Environmental Stressors on Livestock
  • Animal health and immunology
  • Cellular Mechanics and Interactions
  • Microtubule and mitosis dynamics
  • Multiple Sclerosis Research Studies
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Genetic and phenotypic traits in livestock
  • Animal Nutrition and Physiology
  • Amyotrophic Lateral Sclerosis Research
  • Neurogenetic and Muscular Disorders Research
  • Genomics and Chromatin Dynamics
  • Meat and Animal Product Quality
  • Agriculture Sustainability and Environmental Impact
  • Peripheral Neuropathies and Disorders
  • Animal Behavior and Welfare Studies
  • Origins and Evolution of Life
  • Tuberous Sclerosis Complex Research
  • Liver Disease Diagnosis and Treatment
  • Cervical and Thoracic Myelopathy
  • Agricultural Systems and Practices
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Nuclear Structure and Function
  • Renal cell carcinoma treatment

National Institute of Genetics
2021-2024

Kyushu Okinawa Agricultural Research Center
2007-2021

Yamaguchi University
2017-2021

The Graduate University for Advanced Studies, SOKENDAI
2021

Kyushu University
1996-2014

Otaru Municipal Hospital
2012

Agricultural Research Center
2011

National Agriculture and Food Research Organization
2008-2011

Memorial Hospital of South Bend
2006

Kokura Memorial Hospital
2005

There are two distinct subtypes of multiple sclerosis in Asians, opticospinal (OS-multiple sclerosis) and conventional (C-multiple sclerosis). In OS-multiple sclerosis, selective severe involvement the optic nerves spinal cord is characteristic, though its mechanisms unknown. The present study aimed to find out possible differences cytokine/chemokine profiles CSF between C-multiple delineate relationships these neuroimaging pathological features. Sixteen cytokines/chemokines, namely...

10.1093/brain/awh453 article EN Brain 2005-03-02

The role of cell membrane dynamics in migration is unclear. To examine whether total surface area changes are required for migration, Dictyostelium cells were flattened by agar-overlay. Scanning electron microscopy demonstrated that migrating have no reservoirs such as projections and folds. Similarly, optical sectioning fluorescence showed the does not change during migration. Interestingly, staining with a fluorescent lipid analogue turnover rate closely related to velocity. Next, clarify...

10.1038/s41598-017-13438-5 article EN cc-by Scientific Reports 2017-10-05

To investigate cytokine/chemokine changes in amyotrophic lateral sclerosis (ALS), we simultaneously measured 16 cytokine/chemokines (interleukin [IL]-1beta, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12 [p70], IL-13, IL-17, interferon-gamma, tumor necrosis factor-alpha, granulocyte colony stimulating factor [G-CSF], macrophage chemoattractant protein-1 [MCP-1], and inflammatory protein-1beta) cerebrospinal fluid (CSF) sera from 37 patients with sporadic ALS 33 controls using a multiplexed...

10.1097/01.jnen.0000232025.84238.e1 article EN Journal of Neuropathology & Experimental Neurology 2006-08-01

We reported the emergence of a distinct myelitis in patients with atopic diathesis (atopic [AM]) by nationwide survey throughout Japan. Similar cases have recently been Caucasians. Pathologic studies biopsied spinal cord specimens revealed chronic active inflammation eosinophilic infiltration.To clarify cytokine/chemokine alterations CSF from AM comparison to other causes myelitis.We measured 27 cytokines, chemokines, and growth factors simultaneously 22 AM, 20 opticospinal multiple...

10.1212/01.wnl.0000326589.57128.c3 article EN Neurology 2008-09-22

We investigated the mechanisms underlying abnormal vascular endothelial growth factor (VEGF) production in amyotrophic lateral sclerosis (ALS). immunohistochemically studied VEGF, its receptors VEGFR1 and 2, hypoxia-inducible factor-1α (HIF-1α) autopsied ALS spinal cords. also chronologically assessed expression of HIF-1α, karyopherin β1, β-cargo protein complex inhibitors nuclear pore proteins G93A mutant superoxide dismutase 1 (mSOD1) transgenic mice at presymptomatic, symptomatic end...

10.1111/bpa.12040 article EN Brain Pathology 2013-01-31

Zygotes require two accurate sets of parental chromosomes, one each from the mother and father, to undergo normal embryogenesis. However, upon egg–sperm fusion in vertebrates, zygote has three sperm egg. The therefore eliminates set maternal chromosomes (but not paternal chromosomes) into polar body through meiosis, but how are protected meiosis been unclear. Here we report that RanGTP F-actin dynamics prevent proximity chromosomes. prevents localization Juno CD9, egg membrane proteins...

10.1083/jcb.202012001 article EN cc-by The Journal of Cell Biology 2021-08-07

ABSTRACT Three experiments were performed to examine the effects of high ambient temperature and feed restrictions on urinary 3‐methylhistidine (3MH) excretion plasma 3MH concentrations as a marker myofibrillar proteolysis in lactating Holstein cows. In crossover design, four cows maintained during two 14‐day treatment periods with ad libitum intake under constant moderate (18°C) or (28°C) (Experiment 1), 70% 2), 3). The total digestible nutrients was decreased ( P < 0.01) 1) restriction...

10.1111/j.1740-0929.2006.00338.x article EN Animal Science Journal 2006-03-30

ABSTRACT Information on oxidative stress under hot conditions from the levels of cells to organs and whole body has accumulated in last decades. Although a climate decreased dairy performance, changes markers have remained obscure. Therefore, effect high environmental temperature ascorbic acid, sulfhydryl (SH) residue oxidized lipids concentrations plasma total 128 cows was investigated. The monthly average maximum day varied 9.2°C January 32°C August 2004 this institute. High ambient...

10.1111/j.1740-0929.2007.00439.x article EN Animal Science Journal 2007-05-06

We investigated the changes in plasma concentrations of oxidative stress markers periparturient dairy cows hot conditions. This study was performed on 10 from day -5 to after parturition. The experimental duration divided into three periods: period 1 (5 days before parturition); 2 and 3 (from 6 parturition). average rectal temperature during more than 39 °C. Plasma aspartate aminotransferase activities periods were higher that (P<0.05). Blood urea nitrogen concentration lower those total...

10.1111/j.1740-0929.2010.00839.x article EN Animal Science Journal 2011-02-24

Effects of exposure to hot environment on urea metabolism were studied in lactating Holstein cows. Four cows fed ad libitum a total mixed ration and housed temperature-controlled chamber at constant moderate (18°C) or high (28°C) ambient temperatures cross-over design. Urea nitrogen (N) kinetics was measured by determining isotopomer urine after single injection [(15) N(2) ]urea into the jugular vein. Both dry matter intake milk yield decreased under temperature. Intakes N digestible...

10.1111/j.1740-0929.2011.00880.x article EN Animal Science Journal 2011-04-20

ABSTRACT Eight pregnant heifers (primiparous cows) and seven cows in their second, third forth pregnancies (multiparous were assigned to two groups fed either a low calcium (Ca) diet (Ca, 0.46%) or high Ca 0.86%) ad libitum from 3 weeks before the expected calving date days after parturition. All examined for change dry matter intake (DMI), plasma minerals bone turnover around The dietary level did not affect DMI both primiparous multiparous cows. of was significantly lower than that ( P...

10.1111/j.1740-0929.2005.00271.x article EN Animal Science Journal 2005-07-21

ABSTRACT Oxidative stress markers, ascorbic acid, and sulfhydryl (SH) residue concentration in primiparous cows' plasma their relationship to milking performance during hot seasons were investigated. The rectal temperature of cows correlated negatively with SH (r = −0.38, n 38, P &lt; 0.05) acid −0.34, concentrations the plasma. group a higher over mean value produced significantly more milk ( than did lower concentration. Although production showed positive correlation 0.47, 0.05), relation...

10.1111/j.1740-0929.2008.00553.x article EN Animal Science Journal 2008-07-24

ABSTRACT Three experiments were performed to examine the effects of high ambient temperature and feed restriction on nitrogen (N) utilization in lactating cows. Experiment 1 investigated N four cows fed ad libitum a 2 × crossover design under constant moderate (18°C) or (28°C) temperatures. The milk secretion ( P &lt; 0.01) protein concentration 0.05) decreased temperature. with 70% intake. both 0.05). 3 0.01). tended decrease 0.10). Therefore, for production at is mainly caused by reduced...

10.1111/j.1740-0929.2005.00259.x article EN Animal Science Journal 2005-05-19

When a cell divides into two daughter cells, the total surface area should increase. There are models for membrane supply to support division: (1) unfolding of small reservoirs such as microvilli or wrinkles and (2) exocytosis intracellular vesicles. Here, we precisely measured in dividing Dictyostelium flattened by agar overlay that eliminated complexity reservoirs. Because cells divided normally under overlay, was not required division. Under slightly decreased from interphase metaphase...

10.3389/fcell.2020.00238 article EN cc-by Frontiers in Cell and Developmental Biology 2020-04-08

A case of chronic meningitis caused by the achloric alga Prototheca wickerhamii is described, which has persisted for more than 6 years despite treatment with various antifungal agents. For last year no been given, but patient complaints.

10.3109/00365549609027183 article EN Scandinavian Journal of Infectious Diseases 1996-01-01

Akiyama, Yasuhiko MD; Nakahara, Ichiro Tanaka, Masahito Iwamuro, Yasushi Hayashi, Junya Harada, Kei Fujimoto, Motoaki MD Author Information

10.1097/01.ta.0000096662.79685.ea article SW Journal of Trauma and Acute Care Surgery 2005-03-01

Objectives: The aim of this study was to develop a limited sampling strategy (LSS) for monitoring the use mycophenolic acid (MPA) in maintenance therapy with tacrolimus (TCL) renal transplant patients. Methods: Eighteen adult patients receiving first were investigated. All treated combination TCL, steroid and mycophenolate mofetil (MMF). Besides predose trough concentration (C0), whole blood samples taken measurement MPA at 0·5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 12 h 14-point 12-h...

10.1111/j.1365-2710.2008.00896.x article EN Journal of Clinical Pharmacy and Therapeutics 2008-03-04
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