scholarly journals Effects of unloading by tail suspension on biological apatite crystallite alignment in mouse femur

2020 ◽  
Vol 39 (4) ◽  
pp. 670-677
Author(s):  
Kosuke NAKAJIMA ◽  
Satoru MATSUNAGA ◽  
Toshiyuki MORIOKA ◽  
Takayoshi NAKANO ◽  
Shinichi ABE ◽  
...  
2011 ◽  
Vol 26 (1) ◽  
pp. 78-84 ◽  
Author(s):  
Jia YU ◽  
Xiu-Feng XIAO ◽  
Jian-He LIANG ◽  
Rong-Fang LIU ◽  
Chun-Yan WANG ◽  
...  

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 379
Author(s):  
Luchuanyang Sun ◽  
Nobuyuki Miyaji ◽  
Min Yang ◽  
Edward M. Mills ◽  
Shigeto Taniyama ◽  
...  

Astaxanthin (AX) is a carotenoid that exerts potent antioxidant activity and acts in the lipid bilayer. This study aimed to investigate the effects of AX on muscle-atrophy-mediated disturbance of mitochondria, which have a lipid bilayer. Tail suspension was used to establish a muscle-atrophied mouse model. AX diet fed to tail-suspension mice prevented loss of muscle weight, inhibited the decrease of myofiber size, and restrained the increase of hydrogen peroxide (H2O2) production in the soleus muscle. Additionally, AX improved downregulation of mitochondrial respiratory chain complexes I and III in the soleus muscle after tail suspension. Meanwhile, AX promoted mitochondrial biogenesis by upregulating the expressions of adenosine 5′-monophosphate–activated protein kinase (AMPK) α-1, peroxisome proliferator–activated receptor (PPAR)-γ, and creatine kinase in mitochondrial (Ckmt) 2 in the soleus muscle of tail-suspension mice. To confirm the AX phenotype in the soleus muscle, we examined its effects on mitochondria using Sol8 myotubes derived from the soleus muscle. We found that AX was preferentially detected in the mitochondrial fraction; it significantly suppressed mitochondrial reactive oxygen species (ROS) production in Sol8 myotubes. Moreover, AX inhibited the activation of caspase 3 via inhibiting the release of cytochrome c into the cytosol in antimycin A–treated Sol8 myotubes. These results suggested that AX protected the functional stability of mitochondria, alleviated mitochondrial oxidative stress and mitochondria-mediated apoptosis, and thus, prevented muscle atrophy.


2017 ◽  
Vol 58 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Kento Odaka ◽  
Satoru Matsunaga ◽  
Masaaki Kasahara ◽  
Takayoshi Nakano ◽  
Masao Yoshinari ◽  
...  
Keyword(s):  

2006 ◽  
Vol 312 (16) ◽  
pp. 3075-3083 ◽  
Author(s):  
Muneaki Ishijima ◽  
Yoichi Ezura ◽  
Kunikazu Tsuji ◽  
Susan R. Rittling ◽  
Hisashi Kurosawa ◽  
...  

Heliyon ◽  
2017 ◽  
Vol 3 (6) ◽  
pp. e00316 ◽  
Author(s):  
Kentaro Hiraoka ◽  
Keisuke Motomura ◽  
Satoru Yanagida ◽  
Ayako Ohashi ◽  
Nozomi Ishisaka-Furuno ◽  
...  

2011 ◽  
Vol 25 (11) ◽  
pp. 1636-1639 ◽  
Author(s):  
Cui Yin ◽  
Lingshan Gou ◽  
Yi Liu ◽  
Xiaoxing Yin ◽  
Ling Zhang ◽  
...  
Keyword(s):  

Author(s):  
Hossein Omidi-Ardali ◽  
Abolfazl Ghasemi Badi ◽  
Elham Saghaei ◽  
Hossein Amini-Khoei

AbstractObjectivesPrevious studies have suggested antidepressant properties for modafinil; however, the underlying mechanisms mediating the antidepressant effect of modafinil have not been well recognized in clinical and animal studies. Nitric oxide (NO) is involved in the pathophysiology of depression. We attempted to investigate the possible role of NO in the antidepressant-like effect of modafinil in mouse forced swimming test (FST) and tail suspension test (TST).MethodsThe antidepressant-like effect of modafinil (25, 50 and 75 mg/kg), alone and in combination with l-arginine, l-arg, (100 mg/kg) and NG-l-arginine methyl ester, l-NAME (5 mg/kg), was evaluated using FST and TST. Following behavioral tests, the hippocampi were dissected out to measure nitrite levels.ResultsFindings suggested that administration of modafinil at doses of 50 and 75 mg/kg significantly reduced immobility time in the FST and TST. Furthermore, administration of l-arg and l-NAME increased and decreased, respectively, the immobility time in the FST and TST. We showed that co-administration of a sub-effective dose of modafinil (25 mg/kg) plus l-NAME potentiated the antidepressant-like effect of the sub-effective dose of modafinil. In addition, co-treatment of an effective dose of modafinil (75 mg/kg) with l-arg attenuated the antidepressant-like effect of the effective dose of modafinil. We showed that the antidepressant-like effect of modafinil is associated with decreased nitrite levels in the hippocampus.ConclusionsOur findings for the first time support that the modulation of NO, partially at least, is involved in the antidepressant-like effect of modafinil in mouse FST and TST.


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