H
Hiroshi Wachi
Researcher at Hitachi
Publications - 75
Citations - 692
Hiroshi Wachi is an academic researcher from Hitachi. The author has contributed to research in topics: Alloy & Welding. The author has an hindex of 13, co-authored 75 publications receiving 669 citations. Previous affiliations of Hiroshi Wachi include National Defense Medical College.
Papers
More filters
Journal ArticleDOI
Modulation by elastin peptide VGVAPG of cell proliferation and elastin expression in human skin fibroblasts
TL;DR: The effects of two synthetic elastin peptides VPGVG and VGVAPG, both of which are present in humanElastin molecules, are evaluated on the biosynthetic phenotype of extracellular matrix proteins and on the proliferation of human dermal fibroblasts.
Patent
Method and apparatus for automatically controlling arc welding
TL;DR: In this article, a method and apparatus for automatically controlling arc welding is presented, in which pieces of optical information provided by at least two bands of different wavelengths of light radiated from a weld area being arc-welded under predetermined welding conditions are alternately picked up by an optical device to extract various weld factors representing the actual status of the weld area from these pieces of light information, and the extracted weld factors are compared with the desired values of the welding factors representing a desired status representing the desired status.
Journal ArticleDOI
Increase in Elastin Gene Expression and Protein Synthesis in Arterial Smooth Muscle Cells Derived From Patients with Moyamoya Disease
Mari Yamamoto,Masaru Aoyagi,Shingo Tajima,Hiroshi Wachi,Naomi Fukai,Yoshiharu Matsushima,Kiyotaka Yamamoto +6 more
TL;DR: The findings suggest that moyamoya disease may result, at least in part, from an abnormal regulation of extracellular matrix metabolism that leads to increased steady state levels of elastin mRNA andElastin accumulation in the intimal thickening and that increased elast in accumulation is a stable marker of SMCs from patients with moy amoya disease.
Journal ArticleDOI
Stimulation of cell proliferation and autoregulation of elastin expression by elastin peptide VPGVG in cultured chick vascular smooth muscle cells
Hiroshi Wachi,Yoshiyuki Seyama,Sabrou Yamashita,Hideki Suganami,Yuko Uemura,Kouji Okamoto,Haruyoshi Yamada,Shingo Tajima +7 more
TL;DR: Synthetic elastin peptides, VPGVG or its polymer (VPGVG) n , enhanced the proliferation of smooth muscle cells 1.5‐fold during 48 h treatment at the concetrations over 10−6 M or 1.0 μg/ml, respectively, which may reflect the feedback regulation ofElastin expression which may play an essential role in elastsin metabolism under the normal and diseased conditions.
Journal ArticleDOI
Accumulation of elafin in actinic elastosis of sun-damaged skin: elafin binds to elastin and prevents elastolytic degradation.
TL;DR: The results indicate that dermal fibroblasts potentially express elafin on UV irradiation, UV-mediated elAFin interacts with elastin, and theElafin-elastin complex protects elastic fibers from elastolytic degradation, leading to the accumulation of elastic fibers in the actinic elastosis of sun-damaged skin.