Yasuyuki Tanaka

ORCID: 0000-0002-7639-809X
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About
Contact & Profiles
Research Areas
  • Plant biochemistry and biosynthesis
  • Gastrointestinal disorders and treatments
  • Gastrointestinal Tumor Research and Treatment
  • biodegradable polymer synthesis and properties
  • Esophageal and GI Pathology
  • Tracheal and airway disorders
  • Gastric Cancer Management and Outcomes
  • Natural product bioactivities and synthesis
  • Metastasis and carcinoma case studies
  • Plant-Derived Bioactive Compounds
  • Polymer Nanocomposites and Properties
  • Ginkgo biloba and Cashew Applications
  • Cardiovascular Function and Risk Factors
  • Synthetic Organic Chemistry Methods
  • Helicobacter pylori-related gastroenterology studies
  • Biliary and Gastrointestinal Fistulas
  • Lung Cancer Diagnosis and Treatment
  • Cardiac Imaging and Diagnostics
  • Analytical Chemistry and Chromatography
  • Medical Imaging Techniques and Applications
  • Gastrointestinal motility and disorders
  • Autoimmune and Inflammatory Disorders
  • Polymer crystallization and properties
  • Systemic Lupus Erythematosus Research
  • Abdominal vascular conditions and treatments

Kyoto Katsura Hospital
2014-2023

Osaka Minami Medical Center
2020

Akita University
2018

Osaka City University
2017

Shizuoka Cancer Center
2014

Japanese Red Cross Society Wakayama Medical Center
2014

Jikei University School of Medicine
1996-2007

Kyoto Prefectural University of Medicine
1994-2003

Koga Hospital
2003

Katsushika Medical Center
2000-2003

A long-chain betulaprenol-type polyprenol mixture was isolated from the leaves of Ginkgo biloba mainly as acetate. The structure determined by mass spectroscopy, 1H-n.m.r. spectroscopy and 13C-n.m.r. spectroscopy. contained polyprenols-14-22, predominantly polyprenols-17, -18 -19, consisted dimethylallyl terminal unit (omega-terminal), two trans-isoprene residues, a sequence 11-19 cis-isoprene residues hydroxylated isoprene (alpha-terminal) aligned in that order. concentration these...

10.1042/bj2130305 article EN Biochemical Journal 1983-08-01

10.1016/0079-6700(89)90006-3 article EN Progress in Polymer Science 1989-01-01

Case Report A 9-yr-old boy (height, 132 cm; weight, 26 kg) was admitted to the hospital for an emergency appendectomy. His medical history unremarkable. General anesthesia induced without muscle relaxants. After intratracheal topical performed with 4% lidocaine spray, child maintained 100% oxygen by mask in sniffing position under spontaneous respiration 1 min. Intubation then achieved. Anesthesia ventilation during surgery. 22-gauge Tuohy epidural needle inserted at T10-11 interspace a left...

10.1097/00000539-200301000-00014 article EN Anesthesia & Analgesia 2003-01-01

Case Report A 9-yr-old boy (height, 132 cm; weight, 26 kg) was admitted to the hospital for an emergency appendectomy. His medical history unremarkable. General anesthesia induced without muscle relaxants. After intratracheal topical performed with 4% lidocaine spray, child maintained 100% oxygen by mask in sniffing position under spontaneous respiration 1 min. Intubation then achieved. Anesthesia ventilation during surgery. 22-gauge Tuohy epidural needle inserted at T10-11 interspace a left...

10.1213/00000539-200301000-00014 article EN Anesthesia & Analgesia 2003-01-01

The location of the internal trans and cis isoprene units in ficaprenol-11 isolated from Ficus elastica was determined by 13C nuclear magnetic resonance. alignment estimated to be order: omega-terminal unit, three units, six alpha-terminal alcohol unit.

10.1042/bj1830163 article EN Biochemical Journal 1979-10-01

Abstract The chemical structure of naturally occurring cis-polyisoprene isolated from Solidago altissima was determined by 13C NMR spectroscopy. alignment the isoprene units in polymer estimated to be order: dimethylallyl terminal unit, three trans units, about 1000 2200 internal cis and a allyl alcohol unit. This demonstrates that biosynthesis this higher plant starts trans,trans,trans-geranylgeranyl pyrophosphate.

10.5254/1.3538125 article EN Rubber Chemistry and Technology 1983-05-01

The major 70 kDa heat shock protein (HSP70), which is scarcely expressed in unstressed rodent cells, was apparently induced by infection with herpes simplex virus (HSV). Infection HSV types 1 and 2 elevated HSP70 mRNA levels within 4 hr post-infection. synthesis accumulation increased HSV-infected cells. Irradiation of UV-light abolished the ability to induce mRNA. Inhibitors viral DNA did not affect induction infected Protein after necessary for induction.

10.1111/j.1348-0421.1994.tb01785.x article EN Microbiology and Immunology 1994-04-01

10.1016/0009-3084(89)90005-4 article EN Chemistry and Physics of Lipids 1989-11-01

Fatty alteration of bone marrow was analyzed in upper lumbar vertebrae obtained from 94 autopsies. Of these, 85 were individuals over 60 years age. marrows classified grossly into three groups: Group I, a massive type, II, moderate or less significant type; III, nonfatty type. Groups I and II found most frequently the older subjects. They not observed (0/9) below age, but present 42% (5/12) 6th decade, 61% (23/38) 7th 76% (25/33) 8th 100% (2/2) 9th decade. This may relate to decreasing...

10.1093/geronj/31.5.527 article EN Journal of Gerontology 1976-09-01

The heat shock proteins (HSPs) are believed to act as molecular chaperones which appear play some roles in regulation of normal protein folding and also preventing damage structures under various conditions environmental stress. We examined the expression major HSP families, HSP60, 70 90 families small HSP32, at mRNA level ocular development. Expression HSP70, HSP84, HSP86 cognate (HSC)70 mRNAs was by situ hybridization. HSC70, HSP60 were expressed strongly all tissues during early stages 3...

10.3109/02713689508995819 article EN Current Eye Research 1995-01-01

The arrangement of isoprene units in pig liver dolichol-18, -19 and -20 was determined by 1H- 13C-n.m.r. spectroscopies. alignment trans cis found to be the order: dimethylallyl unit, two units, a sequence 14-16 saturated unit terminated with hydroxyl group, which verified presumed chemical structure dolichol. absence geometric isomers confirmed. A slight amount impurity detected each reversed-phase h.p.l.c. fraction dolichol obtained conventional method. Detailed assignments spectrum were...

10.1042/bj2430481 article EN Biochemical Journal 1987-04-15

The aim of this study was to compare the initial and long-term outcomes sirolimus-eluting stents (SES) bare-metal (BMS) in patients with calcified lesions without performing rotational atherectomy. subjects were 79 consecutive (38 SES group 41 BMS group) which confirmed have superficially by intravascular ultrasound. In all lesions, stent implanted after predilatation a balloon. patient characteristics not different between 2 groups. All procedures successfully performed both Vessel area...

10.1536/ihj.48.137 article EN International Heart Journal 2007-01-01
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