Search

Your search keyword '"Nishi, Yuriko"' showing total 5 results
Start Over Author "Nishi, Yuriko"
5 results on '"Nishi, Yuriko"'

1. Abundant Synthesis of Netrin-1 in Satellite Cell-Derived Myoblasts Isolated from EDL Rather Than Soleus Muscle Regulates Fast-Type Myotube Formation

Author

Suzuki, Takahiro, Mori, Aika, Maeno, Takahiro, Arimatsu, Rio, Ichimura, Emi, Nishi, Yuriko, Hisaeda, Kouga, Yamaya, Yuki, Kobayashi, Ken, Nakamura, Mako, Tatsumi, Ryuichi, Ojima, Koichi, Nishimura, Takanori, Suzuki, Takahiro, Mori, Aika, Maeno, Takahiro, Arimatsu, Rio, Ichimura, Emi, Nishi, Yuriko, Hisaeda, Kouga, Yamaya, Yuki, Kobayashi, Ken, Nakamura, Mako, Tatsumi, Ryuichi, Ojima, Koichi, and Nishimura, Takanori

Abstract

Resident myogenic stem cells (satellite cells) are attracting attention for their novel roles in myofiber type regulation. In the myogenic differentiation phase, satellite cells from soleus muscle (slow fiber-abundant) synthesize and secrete higher levels of semaphorin 3A (Sema3A, a multifunctional modulator) than those derived from extensor digitorum longus (EDL; fast fiber-abundant), suggesting the role of Sema3A in forming slow-twitch myofibers. However, the regulatory mechanisms underlying fast-twitch myotube commitment remain unclear. Herein, we focused on netrin family members (netrin-1, -3, and -4) that compete with Sema3A in neurogenesis and osteogenesis. We examined whether netrins affect fast-twitch myotube generation by evaluating their expression in primary satellite cell cultures. Initially, netrins are upregulated during myogenic differentiation. Next, we compared the expression levels of netrins and their cell membrane receptors between soleus- and EDL-derived satellite cells; only netrin-1 showed higher expression in EDL-derived satellite cells than in soleus-derived satellite cells. We also performed netrin-1 knockdown experiments and additional experiments with recombinant netrin-1 in differentiated satellite cell-derived myoblasts. Netrin-1 knockdown in myoblasts substantially reduced fast-type myosin heavy chain (MyHC) expression; exogenous netrin-1 upregulated fast-type MyHC in satellite cells. Thus, netrin-1 synthesized in EDL-derived satellite cells may promote myofiber type commitment of fast muscles.

Published
2021

2. Abundant Synthesis of Netrin-1 in Satellite Cell-Derived Myoblasts Isolated from EDL Rather Than Soleus Muscle Regulates Fast-Type Myotube Formation

Author

Suzuki, Takahiro, primary, Mori, Aika, additional, Maeno, Takahiro, additional, Arimatsu, Rio, additional, Ichimura, Emi, additional, Nishi, Yuriko, additional, Hisaeda, Kouga, additional, Yamaya, Yuki, additional, Kobayashi, Ken, additional, Nakamura, Mako, additional, Tatsumi, Ryuichi, additional, Ojima, Koichi, additional, and Nishimura, Takanori, additional

Published
2021
Full Text
View/download PDF

3. Tropospheric ozone reduces resistance of Japonica rice (Oryza sativa L., cv. Koshihikari) to lodging

Author

YAMAGUCHI, Masahiro, NISHI, Yuriko, KAWADA, Sayaka, and NAKASHIMA, Kentaro

Subjects
Pushing resistance, food and beverages, Root lodging, Photochemical oxidant, Root development
Abstract

To clarify the effects of ozone (O3) on the resistance of Japonica rice (Oryza sativa L.) to root lodging, the Japanese major rice cultivar Koshihikari was exposed to four levels of O3 in open-top chambers (mean O3 concentration: 17.3, 32.4, 51.1, and 66.3 nl l-1). We evaluated the resistance to root lodging by measuring pushing resistance at 15 days after heading (DAH) and the dry masses of plant organs such as roots at harvest (35 DAH). Exposure to O3 significantly reduced pushing resistance per panicle, suggesting that the O3 reduced resistance to root lodging. Because the degree of O3-induced reduction in pushing resistance per panicle correlated with that of O3-induced reduction in root dry mass per panicle, the O3-induced reduction in the resistance to root lodging could be caused by O3-induced reduction in root development. There was a significant negative correlation between relative value of pushing resistance per panicle and O3 concentration or dose, indicating that resistance to root lodging decreases with increasing O3 concentration. In East Asia, because the O3 concentration is projected to increase in the near future, lodging issues in the rice cultivation could become serious., Journal of Agricultural Meteorology, 74(3), pp.97-101; 2018

Published
2018

4. Society of Agricultural Meteorology of Japan

Author

YAMAGUCHI, Masahiro, NISHI, Yuriko, KAWADA, Sayaka, and NAKASHIMA, Kentaro

Subjects
Pushing resistance, food and beverages, Root lodging, Photochemical oxidant, Root development
Abstract

To clarify the effects of ozone (O3) on the resistance of Japonica rice (Oryza sativa L.) to root lodging, the Japanese major rice cultivar Koshihikari was exposed to four levels of O3 in open-top chambers (mean O3 concentration: 17.3, 32.4, 51.1, and 66.3 nl l-1). We evaluated the resistance to root lodging by measuring pushing resistance at 15 days after heading (DAH) and the dry masses of plant organs such as roots at harvest (35 DAH). Exposure to O3 significantly reduced pushing resistance per panicle, suggesting that the O3 reduced resistance to root lodging. Because the degree of O3-induced reduction in pushing resistance per panicle correlated with that of O3-induced reduction in root dry mass per panicle, the O3-induced reduction in the resistance to root lodging could be caused by O3-induced reduction in root development. There was a significant negative correlation between relative value of pushing resistance per panicle and O3 concentration or dose, indicating that resistance to root lodging decreases with increasing O3 concentration. In East Asia, because the O3 concentration is projected to increase in the near future, lodging issues in the rice cultivation could become serious.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results