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成秀光,黃文枝 대구효성가톨릭대학교 1986 연구논문집 Vol.33 No.1
This study was carried out to choice the most suitable lining fabric materials that has it's required various functions. Six fabrics of silk, rayon, cupra, acetate, polyester and nylon, each of which had 5 kinds as sample were used. According to four required functions for lining fabric, characteristics of 12 items that is warmth retaining, air permeability, moisture transmission, electrostatic property, extensibility, smoothness, crease resistance, stiffness, shrinkage, tensil strength, bursting strength, and surface abrasion resistance were measured. The most suitable lining fabric for good health is silk, for activity is polyester and rayon, for decoration is polyester and for durability is polyester and nylon.
Effects of acute exercise on mitochondrial dynamics and mitophagy in the rat skeletal muscles
Su-Zi Yoo,Jun-Won Heo,Mi-Hyun No,Dong-Ho Park,Ju-Hee Kang,Hyo-Bum Kwak 한국운동재활학회 2018 한국운동재활학회 학술대회 Vol.2018 No.10
The current study aims to investigate how mitochondrial dynamics and mitophagy are changed by a single bout aerobic exercise. Four month Fischer 344 rats were divided into 2 groups: sedentary group (SED, n=6) and acute exercise group (AEX, n=6). Rats were performed in a single bout treadmill exercise for 60 minutes. Mitochondrial fusion (e.g., Mfn1, Mfn2, Opa1), mitochondrial fission (e.g., Drp1, Fis1), and mitophagy (e.g., Parkin, Pink1, BNIP3, LC3) were measured in the permeabilized skeletal muscles (e.g., soleus, white gastrocnemius). Mitochondrial fusion-related protein (Opa1) was decreased in soleus of AEX compared with SED. Also, mitochondrial fission-related protein (Drp1) was reduced in soleus of AEX compared with SED. Similarly, in soleus muscle of AEX, mitochondrial autophagy-related protein (LC3) was decreased compared with SED. However, other proteins of mitochondrial dynamics and mitophagy didn’t show significant difference in soleus and white gastrocnemius. A single bout aerobic exercise showed tissue-specific results in mitochondrial dynamics and mitophagy. It demonstrates that acute aerobic exercise may improve mitochondrial function predominantly in soleus muscle (type I fiber). However, further research is needed to understand the cellular and molecular mechanism by which acute aerobic exercise affects mitochondrial dynamics and mitophagy in different types of muscle fibers.
Su Liu,Xiao-Xiao Shi,Qing-Zi Zhu,Wen-Juan Jiao,Zi-Jie Zhu,Hang Yu,Gui-YaoWang,Zengrong Zhu 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.1
Insect chemosensory proteins (CSPs) are small, water-soluble proteins which can bind and transport hydrophobic odorants through sensillum lymph to activate odorant receptors, thus play important roles in the olfactory recognition. In the present study, by searching the transcriptome data sets, a total of 22 candidate CSP genes were identified from Cnaphalocrocis medinalis, a serious lepidopteran rice pest in Asia. CSP proteins encoded by these genes showed typical characteristics: an N-terminal signal peptide, four conserved cysteine residues and the pattern of cysteine spacing. The expression profiles of these putative CSP genes were investigated using real-time quantitative PCR. The results showed that five genes (CmedCSP4, CmedCSP8, CmedCSP11, CmedCSP18 and CmedCSP21) were expressed primarily in antennae, suggesting their involvement in olfactory processes; whilst other genes are mainly expressed in non-olfactory tissues, such as abdomen and legs, indicating a broader physiological function for these CSPs. The findings will lead to a better understanding of the molecular mechanisms of chemoreception in C. medinalis.
Su-Zi Yoo,Mi-Hyun No,Jun-won Heo,Dae-Yun Seo,Su-Jeen Jung,Hyo-Bum Kwak 한국운동재활학회 2019 한국운동재활학회 학술대회 Vol.2019 No.05
The purpose of this study was to determine the effects of in vivo atorvastatin, L-carnosine, and resistance exercise training on mitochondria-mediated apoptotic signaling in the rat skeletal muscle. Male Wistar rats were randomly assigned to control (CON), 5 mg atorvastatin treated group (STAT), 5 mg atorvastatin plus resistance (ladder climbing) exercise training group (STAT + EX), 5 mg atorvastatin plus L-carnosine treatment group (STAT + CAR), and 5 mg atorvastatin treatment plus resistance exercise training plus L-carnosine treatment group (STAT + EX + CAR) (n=12 rats/group). Animals were administered via oral gavage with a vehicle, 5 mg/kg/day atorvastatin, and 250 mg/kg/day L-carnosine dissolved in 0.25 % w/v hydroxypropyl methylcellulose for 12 weeks. Also, animals were trained for 12 weeks on a ladder with a gradient of about 80 degrees. Mitochondria-mediated apoptotic signaling (e.g., Bax, Bcl-2, mPTP opening, cytochrome c, cleaved caspase-3) were measured in skeletal muscles (e.g., soleus, white gastocnemius). Bax , pro-apoptotic protein, was increased in STAT in both soleus and white gastrocnemius and decreased in STAT + EX, STAT + CAR, and STAT + EX + CAR in both soleus and white gastrocnemius. In contrast, Bcl-2, anti-apoptotic protein, was elevated in STAT + EX, STAT + CAR, and STAT + EX + CAR in both soleus and white gastrocnemius and reduced in STAT in both soleus and white gastrocnemius. Also, mPTP opening, cytochrome c, and cleaved caspase-3 showed the same patterns like Bax in both soleus and white gastrocnemius. These data demonstrated that skeletal muscle mitochondria-mediated apoptotic signaling was impaired by atorvastatin treatment for 12 weeks. However, L-carnosine and resistance exercise training protected against statin-induced mitochondria-mediated apoptotic signaling in the rat skeletal muscle, suggesting that both L-carnosine and resistance exercise training play a pivotal role in ameliorating apoptosis in statin-induced myopathy.
Yoo, Su-Zi,No, Mi-Hyun,Heo, Jun-Won,Park, Dong-Ho,Kang, Ju-Hee,Kim, Joon-Hee,Seo, Dae-Yun,Han, Jin,Jung, Su-Jeen,Kwak, Hyo-Bum Korean Continence Society 2019 International Neurourology Journal Vol.23 No.S1
<P><B>Purpose</B></P><P>This study aimed to investigate the effects of single-bout exercise on mitochondrial function, dynamics (fusion, fission), and mitophagy in cardiac and skeletal muscles.</P><P><B>Methods</B></P><P>Fischer 344 rats (4 months old) were randomly divided into the control (CON) or acute exercise (EX) group (n=10 each). The rats performed a single bout of treadmill exercise for 60 minutes. Mitochondrial function (e.g., O<SUB>2</SUB> respiration, H<SUB>2</SUB>O<SUB>2</SUB> emission, Ca<SUP>2+</SUP> retention capacity), mitochondrial fusion (e.g., Mfn1, Mfn2, Opa1), mitochondrial fission (e.g., Drp1, Fis1), and mitophagy (e.g., Parkin, Pink1, LC3II, Bnip3) were measured in permeabilized cardiac (e.g., left ventricle) and skeletal (e.g., soleus, white gastrocnemius) muscles.</P><P><B>Results</B></P><P>Mitochondrial O<SUB>2</SUB> respiration and Ca<SUP>2+</SUP> retention capacity were significantly increased in all tissues of the EX group compared with the CON group. Mitochondrial H<SUB>2</SUB>O<SUB>2</SUB> emissions showed tissue-specific results; the emissions showed no significant differences in the left ventricle or soleus (type I fibers) but was significantly increased in the white gastrocnemius (type II fibers) after acute exercise. Mitochondrial fusion and fission were not altered in any tissues of the EX group. Mitophagy showed tissue-specific differences: It was not changed in the left ventricle or white gastrocnemius, whereas Parkin and LC3II were significantly elevated in the soleus muscle.</P><P><B>Conclusions</B></P><P>A single bout of aerobic exercise may improve mitochondrial function (e.g., O<SUB>2</SUB> respiration and Ca<SUP>2+</SUP> retention capacity) in the heart and skeletal muscles without changes in mitochondrial dynamics or mitophagy.</P>