• Asian-Australasian Journal of Animal Sciences
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• v.17 no.11
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• pp.1599-1607
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• 2004

This study examined the effects of pre-slaughter fasting, chasing stress and chiller ageing on objective meat quality, and their relations to the proteome profile of longissimus muscle using 20 male Korean native black pigs. Treatments were composed of two levels of pre-slaughter feed withdrawal, two levels of pre-slaughter stress and four chiller ageing times. A 15 min chasing stress immediately prior to slaughter significantly (p<0.05) decreased detectable levels of $\mu$-calpain activity during rigor development and chiller ageing, but did not have any direct effect on objective meat quality. On the other hand, pigs fed until the morning of slaughter resulted in significantly (p<0.05) higher hunter L* value and cooking loss than those which received an 18 h feed withdrawal prior to slaughter. Cooking loss and hunter L* value were constant during 7 d of chiller ageing, followed by significant increases at 14 d. The fed animals showed a significantly (p<0.05) higher hunter a* value at both 3 and 7 d, while the other group maintained a stable redness for 7 d. WB-shear force was not affected by the pre-slaughter treatments, but had significant (p<0.05) linear reduction from 1 to 7 d. A gelbased proteome analysis was performed on selected animals for low and high hunter L* values at 1 d. Ten and five spots had greater than two-fold spot densities for the low and high hunter L* groups, respectively. The ten spots included chain A, deoxyribounclease I complex with actin, heat shock protein 27 kDa, a protein similar to cardiac $Ca^{2+}$ release channel, and myosin heavy chain, while the five spots included chain A aldehyde dehydrogenase, glycerol-3 phosphate dehydrogenase, and hemoglobin alpha chain. In general, feeding until the morning of slaughter resulted in more desirable meat color, but appeared to reduce palatability due to increased cooking loss. Proteome analysis demonstrated that various proteins were concomitantly involved in the determination of final meat color. The most noticeable observation in the current study was that various isoforms for a particular protein differed in degradation and/or expression rate depending on meat quality.

• Journal of Life Science
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• v.21 no.12
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• pp.1726-1731
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• 2011

Human Stem Cell Factor (hSCF) is a cytokine that binds to the c-Kit receptor and plays an important role in hematopoiesis, spermatogenesis, and melanogenesis. To produce the human Stem Cell Factor (hSCF) recombinant protein, we constructed a germline transgenic silkworm using the piggyback vector. The expression of the hSCF gene was driven by the Drosophila heat shock protein 70 (dHsp70) promoter. 3XP3 promotor-driven EGFP was used as a marker which allowed us to rapidly distinguish the transgenic silkworm. A mixture of the donor and helper vector was micro-injected into 1,020 eggs of bivoltin silkworms, Keomokjam. We obtained approximately 22 G1 broods that were EGFP-positive. The expression of the hSCF gene in the transgenic silkworm was analyzed by SDS-PAGE and immunoblotting. Also, analysis of insertion sites into the silkworm genome using inverse PCR showed that exogenous DNA was inserted into the transgenic silkworm genome. These results show that successfully constructed transgenic silkworm expresses the hSCF recombinant protein.

• Physical Therapy Korea
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• v.13 no.3
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• pp.57-66
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• 2006

Ischemic stroke results from a transient or permanent reduction in cerebral blood flow that is restricted to the territory of a major brain artery. Thus, this study was performed to examine (1) the effects of swimming exercise on the improvement of muscle atrophy, and (2) exercise and HSP 70 expression in an ischemic stroke model induced by middle cerebral artery occlusion. The results of this study were as follows: One week after ischemic stroke was induced, changes appeared in the muscle weight of the gastrocnemius muscle due to muscle atrophy in the affected side. Group II showed statistically significant difference from group III eight weeks after ischemic stroke was induced. (p<.05). One week and eight weeks after ischemic stroke was induced there was significant decrease in the relative muscle weight of the gastrocnemius muscle in each group except Group IV, while there was statistically significant increase in group II eight weeks after ischemic stroke was induced, compared to group III (p<.05). For neurologic exercise behavior tests, Group II generally had the highest score, compared to other groups. In immunohistochemical observations, Group II showed a decrease in HSP 70. The above results suggest that swimming exercise improved muscle atrophy, changed the HSP 70 expression of ischemic stroke in rats, and contributed to the improvement of exercise function.

• Korean Journal of Environmental Biology
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• v.33 no.4
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• pp.433-440
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• 2015

The Apostichopus japonicus is an important species in some Asia countries including Korea, China and Japan. The purpose of the present study was to investigate the differential gene expression of heat shock protein90 (Hsp90) and ferritin as a biomarker for the thermal stress during water temperature rising in the sea cucumber, A. japonicus. The A. japonicus (1.4 g) was cultured in incubator of separate temperature ($15^{\circ}C$, $20^{\circ}C$, $25^{\circ}C$ and $30^{\circ}C$) for each 0, 3, 6, 12, 24, 48 hours. The mRNA expression levels of Hsp90 and ferritin were examined using RT-PCR assay. Results showed that, the expression of Hsp90 mRNA was not significantly changed at $15^{\circ}C$. The expression of Hsp90 mRNA was significantly increased at high temperature such as $20^{\circ}C$ and $25^{\circ}C$. Furthermore, Hsp90 mRNA was early increased at $25^{\circ}C$ than $20^{\circ}C$. The ferritin mRNA was similar expression pattern with Hsp90. But, Hsp90 mRNA was more sensitive than ferritin mRNA at high thermal stress. These results indicate that Hsp90 and ferritin mRNAs were involved in the temperature changes response and may be play an important role in mediating the thermal stress in A. japonicas.

• Asian-Australasian Journal of Animal Sciences
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• v.24 no.1
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• pp.110-124
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• 2011

Anatomically separate fat depots differ in size, function, and contribution to pathological states such as the metabolic syndrome. We isolated pre-adipocytes from different adipose depots, omental, subcutaneous and intramuscular, of beef cattle, and cultured in vitro to determine the basis for the variations and attribute these variations to the inherent properties of adipocyte progenitors. The proliferating cells from all depots before the confluence were harvested and the proteome was analyzed by a functional proteomic approach, involving 2-DE and MALDI-TOF/TOF. More than 252 protein spots were identified, selected and analyzed by Image Master (ver 7.0) and MALDI-TOF/TOF. Further, our analysis showed that there were specific differences in proteome expression patterns among proliferating precursor cells from the three depots. Sixteen proteins were found to be differentially expressed and these were identified as proteins involved in cellular processes, heat shock/chaperones, redox proteins, cytoskeletal proteins and metabolic enzymes. The results also enabled us to understand the basic roles of these proteins in different inherent properties exhibited by adipose tissue depots.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.11
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• pp.5849-5855
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• 2012

Objective: The purpose of this study was to determine pretreatment effects of moderate-term endurance training before the various dosages (10 and $20{_{mg.kg}}^{-1}$) of DOX on a heat shock protein ($HSP_{70kda}$) and cardiotoxicity in heart tissue. Methods: Forty-eight male rats were randomly assigned to nontraining (NT) and training (T) groups and three subgroups; $DOX{_{10mg.kg}}^{-1}$ and $DOX{_{20mg.kg}}^{-1}$ and saline treatment. The training program included treadmill running between 25-39 min/day and 15-17 m/min, 5 days/wk for 3 wk. Result: DOX administration, in particularly with $20{_{mg.kg}}^{-1}$, caused up-regulation of oxidants and cardiac damage (MDA, CK, CPK-MB and CK/CPK-MB) and down-regulation of cardioprotection ($HSP_{70}$, SOD) markers, as compared to NT+saline group. Pretreatment effect of treadmill running endurance exercise in the presence of DOX with $10{_{mg.kg}}^{-1}$ caused a significant increase in $HSP_{70}$, SOD and a significant decrease in MDA and insignificant decrease in CK, CPK-MB and CK/CPK-MB, in comparison $T+DOX_{10}$ with $NT+DOX_{10}$ group. However, there was no significant difference between $T+DOX{_{10mg.kg}}^{-1}$ and $T+DOX{_{20mg.kg}}^{-1}$ in the aforesaid markers. Conclusion: Dox-induced cardiotoxicity is related to oxidative stress. Our study suggests that pretreatment with endurance exercise may be considered as a potentially useful strategy to improve myocardial tolerance against single dose DOX-induced oxidative damage.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.10
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• pp.4655-4659
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• 2016

Background and Aim: Breast cancer is a major healthcare problem in women. There are many reports about up-regulation of Hsp27 in cancer tissues but less is known about the potential relationship between Hsp27 antibody levels and breast cancer complications. We here investigated concentrations of serum Hsp27 antigen and antibodies in subjects with and without breast cancer and assessed potential associations with two-year disease-free survival, histological grade and number of lymph nodes. Materials and Methods: Specifically, serum Hsp27 antigen and antibody levels from 97 patients with breast cancer, and 65 healthy controls were determined by enzyme-linkedimmunosorbent assays (ELISAs). Results: Serum Hsp27 and antibody levels were significantly (p<0.001) higher in patients with breast cancer compared to the control group, but no relationship were found with two-year disease free survival, histological grade or number of lymph nodes (p> 0.6, 0.2 and 0.9 respectively). Conclusions: Elevated levels of Hsp27 antibody occur with women with breast cancer but do not appear to be associated with the presence of disease clinical complications.

• Journal of Acupuncture Research
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• v.26 no.4
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• pp.49-58
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• 2009

목적 : 파킨슨 병은 기저핵 흑질의 치밀부에서 도파민성 신경세포의 퇴행으로 인하여 발생하는 질병으로 신경 염증이 주요 병인으로 밝혀져 있다. 이 연구는 MPTP 유발 파킨슨 병 동물 모델에서 신수혈($BL_{23}$)에 대한 봉독 약침의 항염증 효과 및 그 기전을 확인하기 위해 시행되었다. 방법 : $C57_{BL}$/6쥐를 무처치군, MPTP+saline군, MPTP+BVA(0.06mg/kg)군, MPTP+BVA(0.6mg/kg)군의 4군으로 나눈 뒤 무처치군을 제외한 모든 그룹에 총 8시간 동안 2시간 간격으로 MPTP-HCl(20mg/kg per dose$\times$4)을 복강내로 주입하였다. MPTP+BVA 군에서 봉독약침은 마지막 MPTP 주입 2시간 후부터 48시간 간격으로 신수혈($BL_{23}$)에 양측으로 각 20${\mu}\ell$씩 주입하였고 MPTP+saline군에서는 봉독약침 대신 Saline을 주입하였다. 마지막 MPTP 주입 후 7일째에 쥐의 뇌를 적출한 후 면역조직화학법을 시행하였다. 결과 : MPTP 유발 파킨슨 병 동물 모델에서 신수혈에 대한 봉독약침은 농도 의존적으로 TH-Immunoreactivity neuron의 감소와 microglial activation을 억제하였다. HSP70-IR neuron은 모든 군에서 나타나지 않았다. 결론 : 봉독약침이 용량의존적으로 microglial activation을 억제하는 효과를 통해 도파민성 신경세포의 파괴를 억제함으로써 항염 효과를 나타냄을 알 수 있었다. 이 결과는 봉독약침이 microglial activation 억제를 통해 임상적으로 파킨슨 병과 같은 신경 퇴행성 질병에 있어 유용한 치료수단이 될 수 있음을 시사한다.

• The Korea Journal of Herbology
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• v.20 no.4
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• pp.1-10
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• 2005

Objectives : We investigated the anti-aging effect on skin with the extract of the needles of red pine, Pinus densiflora. Methods : We measured various effects related to skin such as the anti-oxidant effect, the protection against ultraviolet (UV) irradiation, the inhibition of reactive oxygen species (ROS) generation, the induction of heat shock protein 70 (HSP70), the reduction of matrix metalloproteinase-2 (MMP-2) synthesis and senescent cell. Results : The results were as follows : The extract of the needles of red pine (RP) had the potent anti-oxidant effect and the ROS scavenging effect. Also RP preserved the systemic anti-oxidant enzyme system (superoxide dismutase and catalase) from UVB irradiation. RP protected the cell membrane from the damages induced by UVB irradiation. RP induced HSP70, a mediator of resistance to UVB irradiation. RP reduced the synthesis of MMP-2 induced by UVB irradiation. And RP inhibited the amount of senescent-associated (SA) ${\beta}-galactosidase$ staining, as a marker of replicative senescence. Conclusions : The results of our study indicate that the extract of the needles of red pine, Pinus densiflora, has anti-aging effects on skin.

• Asian-Australasian Journal of Animal Sciences
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• v.26 no.11
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• pp.1598-1608
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• 2013

An optimum dietary carbohydrate content is important for maximum fish growth. In this study, we fed Wuchang bream (Megalobrama amblycephala) with either control diet (30.42%) or high carbohydrate diet (52.92%) for 90 d. Fish were fed to apparent satiation three times daily in an aquarium with automatic temperature control and circulated water. Growth performance, plasma biochemical parameters, hepatic morphology and enzyme activities were determined. It was shown that compared to fish fed control diet, fish fed high carbohydrate diet had higher plasma triglyceride and cortisol levels for d 90, and lower alkaline phosphatase level for d 45, lower hepatic superoxide dismutase and total antioxidative capacity for d 90, higher malondialdehyde for d 45 and glycogen content for d 45 and 90 (p<0.05). Histological and transmission electron microscopy studies showed that hepatocytes of fish fed high carbohydrate diet contained large lipid droplets, causing displacement of cellular organelles to periphery of hepatocytes. The relative level of hepatic heat shock protein 70 (HSP70) mRNA of Wuchang bream fed high carbohydrate diet was significantly higher than that of fish fed the control diet for 90 d (p<0.05). These changes led to decreased specific growth rate and increased feed conversion ratio (p<0.05). Upon hypoxia challenge, fish fed high carbohydrate diet had higher cumulative mortality than those fed the control diet (p<0.05). These results suggested that high dietary carbohydrate (52.92%) was detrimental to the growth performance and health of Wuchang bream.