• 생명과학회지
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• 제19권2호
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• pp.213-218
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• 2009

본 연구에서는 F344계 흰쥐를 대상으로 8주간 저강도 운동군과 고강도 운동군으로 나누어 수영운동을 실시하여, 갈색지방조직 내 UCP-1과 UCP-3mRNA 발현을 관찰하고 혈당 및 인슐린 수준이 어떠한 변화를 나타내는지 알아보았다. 그 결과 저강도 수영을 실시한 그룹이 대조군과 고강도 운동그룹보다 갈색지방조직 내 UCP-1과 UCP-3 mRNA 발현이 증가되는 것을 관찰하였으며, 고강도 수영군에서 대조군 보다 인슐린 수준이 낮게 나타났으나 혈당에서는 유의한차가 나타나지 않았다. 하지만 저강도 수영군에서 대조군보다 혈당 및 인슐린 수준이 유의하게 감소하는 것을 관찰하였다. 이러한 결과는 저강도 수영운동이 갈색지방조직 내 UCP-1과 UCP-3mRNA 발현을 증가시키고, 당대사를 활성화하여 인슐린민감도를 개선시킬 수 있음을 보여주는 결과이다.

• Journal of Nutrition and Health
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• 제41권8호
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• pp.767-775
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• 2008

1) 연구대상자 중 비만아동 빈도수 분석 결과, BIA법에서는 70.0%, BMI에 의한 비만도에서는 32.7%, 신장별 체중에 의한 비만도에서는 23.6%로 BAI법에 의해 비만아동의 빈도수가 가장 많았다. 혈청 생화화적 분석 결과는 NCEP의 이상지혈증 기준 이하로 나타났다. 2) UCP-1 유전자 다형성에 의한 신체계측의 결과의 분포는 정상형과 변이형에서 차이를 나타내지 않았고 혈중 생 화학 결과에서는 LDL (p = 0.039)과 TC (p = 0.063)이 정상형에 비해 변이형에서 유의적으로 증가하였다. 3) LDL을 130 mg/dL 기준으로 고LDL 콜레스테롤혈증과 정상으로 나누었을 때 각각에서 UCP-1 유전자 다형성의 분포는 고LDL 콜레스테롤혈증에서 A allele는 5.4%, G allele는 13.0%로 G allele의 빈도가 높게 분포하였고, 정상에서는 각각 94.6%, 87%의 분포를 나타내었다 (p = 0.062, ORs 2.640). LDL의 농도를 백분위수에 따라 4집단으로 나누고 UCP-1 유전자의 A allele와 G allele에서 LDL 농도의 빈도수를 나타내었을 때 G allele에서는 빈도수가 25th, 50th, 75th, 100th에 따라 유의적으로 증가하였다 ($r^2$ = 0.7995, p-trend = 0.032). 따라서 UCP-1 유전자 변이형은 정상형에 비해 고LDL-콜레스테롤혈증의 발병을 증가시키는 것으로 나타났다. UCP-1 유전자의 다형성은 이상지혈증의 위험인자인 LDL 농도를 증가시키는 위험요인으로써 나타났고, 체중을 감안할 때는 이상지혈증의 위험도가 더욱 증가할 것으로 생각되어진다. 따라서 UCP-1 유전자 변이형을 가지는 비만아동은 고LDL-콜레스테롤혈증의 발병과 관련된 식이 및 환경적 인자를 적절히 통제하는 예방 대책을 마련하여야겠다.

• Asian-Australasian Journal of Animal Sciences
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• 제32권2호
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• pp.170-175
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• 2019

Objective: Uncoupling protein 3 gene (UCP3) is a candidate gene associated with the meat quality of pigs. The aim of this study was to explore the regulation mechanism of UCP3 expression and provide a theoretical basis for the research of the function of porcine UCP3 gene in meat quality. Methods: Bisulfite sequencing polymerase chain reaction (PCR) and quantitative real-time PCR (Q-PCR) were used to analyze the methylation of UCP3 5′-flanking region and UCP3 mRNA expression in the adipose tissue or skeletal muscle of three pig breeds at different ages (1, 90, 210-day-old Putian Black pig; 90-day-old Duroc; and 90-day-old Dupu). Results: Results showed that two cytosine-guanine dinucleotide (CpG) islands are present in the promoter region of porcine UCP3 gene. The second CpG island located in the core promoter region contained 9 CpG sites. The methylation level of CpG island 2 was lower in the adipose tissue and skeletal muscle of 90-day-old Putian Black pigs compared with 1-day-old and 210-day-old Putian Black pigs, and the difference also existed in the skeletal muscle among the three 90-day-old pig breeds. Furthermore, the obvious changing difference of UCP3 mRNA expression was observed in the skeletal muscle of different groups. However, the difference of methylation status and expression level of UCP3 gene was not significant in the adipose tissue. Conclusion: Our data indicate that UCP3 mRNA expression level was associated with the methylation status of UCP3 promoter in the skeletal muscle of pigs.

• BMB Reports
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• 제39권4호
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• pp.346-354
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• 2006

The full-length cDNA of grass carp (Ctenopharyngodon idellus) and silver carp (Hypophthalmichthys molitrix) uncoupling protein 2 (UCP2) was obtained from liver. The grass carp UCP2 cDNA was determined to be 1152 bp in length with an open reading frame that encodes 310 amino acids. Five introns (Intron 3, 4, 5, 6 and 7) in the translated region, and partial sequence of Intron 2 in the untranslated region of grass carp UCP2 gene were also obtained. Gene structure comparison between grass carp and mammalian (human and mouse) UCP2 gene shows that, the UCP2 gene structure of grass carp is much similar to that of human and mouse. Partial UCP2 cDNA sequences of bighead carp (Aristichthys nobilis) and mud carp (Cirrhinus molitorella), were further determined. Together with the common carp (Cyprinus carpio) UCP2 sequence from GenBank (AJ243486), multiple alignment result shows that the nucleotide and amino acid sequences of the UCP2 gene, were highly conserved among the five major Chinese carps that belong to four subfamilies. Using beta-actin as control, the ratio UCP2/beta-actin mRNA (%) was determined to be $149.4{\pm}15.6$ (common carp), $127.4{\pm}22.1$ (mud carp), $96.7{\pm}12.7$ (silver carp), $94.1{\pm}26.8$ (bighead carp) and $63.7{\pm}16.2$ (grass carp). The relative liver UCP2 expression of the five major Chinese carps, shows a close relationship with their food habit: benthos and detrituseating fish (common carp and mud carp) > planktivorious fish (silver carp and bighead carp) > herbivorious fish (grass carp). We suggest that liver UCP2 might be important for Chinese carps to detoxify cyanotoxins and bacteria in debris and plankton food.

• BMB Reports
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• 제54권8호
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• pp.419-424
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• 2021

Cold-induced norepinephrine activates β3-adrenergic receptors (β3-AR) to stimulate the kinase cascade and cAMP-response element-binding protein, leading to the induction of thermogenic gene expression including uncoupling protein 1 (Ucp1). Here, we showed that stimulation of the β3-AR by its agonists isoproterenol and CL316,243 in adipocytes increased the expression of Ucp1 and Heme Oxygenase 1 (Hmox1), the principal Nrf2 target gene, suggesting the functional interaction of Nrf2 with β3-AR signaling. The activation of Nrf2 by tert-butylhydroquinone and reactive oxygen species (ROS) production by glucose oxidase induced both Ucp1 and Hmox1 expression. The increased expression of Ucp1 and Hmox1 was significantly reduced in the presence of a Nrf2 chemical inhibitor or in Nrf2-deleted (knockout) adipocytes. Furthermore, Nrf2 directly activated the Ucp1 promoter, and this required DNA regions located at -3.7 and -2.0 kb of the transcription start site. The CL316,243-induced Ucp1 expression in adipocytes and oxygen consumption in obese mice were partly compromised in the absence of Nrf2 expression. These data provide additional insight into the role of Nrf2 in β3-AR-mediated Ucp1 expression and energy expenditure, further highlighting the utility of Nrf2-mediated thermogenic stimulation as a therapeutic approach to diet-induced obesity.

• 통상정보연구
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• 제4권2호
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• pp.13-26
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• 2002

본 논문에서는 eUCP에서 전자자료 제시의 기준과 심사기준을 중심으로 연구하였다. 전자자료 제시의 장소, 제시의 방법에 대한 기준과 제시시기 및 전자제시에 대한 인증에서 발생하는 문제점을 제기하고 심사기간의 기준과 하이퍼링크방식의 전자자료에 대한 심사기준, 훼손된 전자기록에 대한 심사기준을 분석하였으며, 전자가록의 거절의 방법과 그에 대한 응답에 관련된 내용을 분석하였다. 전자제시의 문제점으로서 표준양식의 문제, 전자제시자의 면책의 문제, 환어음 유통성의 문제, 서류 심사기간, 인증기관과 방법에 관한 문제에 대하여 분석하여 해결방안을 제시하였다.

• Journal of Animal Science and Technology
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• 제58권1호
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• pp.3.1-3.6
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• 2016

Background: Uncoupling proteins 2 (UCP2) plays an important role in energy regulation, previous studies suggested that UCP2 is an excellent candidate gene for human obesity and growth-related traits in cattle and chicks. The current study was designed to detect the genetic variation of UCP2 gene, and to explore the association between polymorphism of UCP2 gene and growth, carcass and meat quality traits in rabbits. Results: A synonymous mutation in exon 1 and four variants in the first intron of the UCP2 gene were identified by using PCR-sequencing. The synonymous mutation c.72G>A was subsequently genotyped by MassArray system (Sequenom iPLEXassay) in 248 samples from three meat rabbit breeds (94 Ira rabbits, 83 Champagne rabbits, and 71 Tianfu black rabbits). Association analysis suggested that the individuals with AA and AG genotypes showed greater 70 d body weight (P < 0.05), 84 d body weight (P < 0.01), ADG from 28 to 84 days of age (P < 0.05), eviscerated weight (P < 0.01), semi-eviscerated weight (P < 0.01) and semi-eviscerated slaughter percentage (P < 0.05), respectively. Additionally, the individuals with AA and AG genotype had a lower pH value of longissimus muscle (P < 0.01) and hind leg muscle (P < 0.05) after slaughter 24 h. Conclusions: These findings indicated that UCP2 could be a candidate gene that associated with growth performance, body composition and meat quality in rabbits, and this would contribute to advancements in meat rabbit breeding practice.

• 대한한의학방제학회지
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• 제31권4호
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• pp.265-281
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• 2023

Objectives : Ukgan-san plus Citri Pericarpium and Pinelliae Rhizoma (UCP) is used as a traditional herbal formula in Korea and Japan for treatment of fever, fever-induced convulsions, and liver dysfunction and so on. In this study, we investigated the cytoprotective effect and underlying mechanism of UCP against oxidative stress induced by cotreatment of arachidonic acid (AA) and iron. Methods : To evaluate the hepatoprotective effects of UCP against AA + iron-induced oxidative stress in HepG2 cell, cell viability and changes on apoptosis-related proteins were assessed by MTT and immunoblot analyses. The changes in intracellular reactive oxygen species (ROS), glutathione (GSH), and mitochondrial membrane permeability (MMP) were investigated against to the oxidative stress. Furthermore, to verify underlying molecular mechanism, NF-E2-related factor 2 (Nrf2) and its downstream target genes were examined by immunoblot analysis. Results : Treatment of UCP increased the cell viability and altered the expression levels of apoptosis-related proteins such as PARP, caspase-9, caspase-3, Bcl-2. UCP also inhibited the GSH depletion, excessive ROS production and mitochondrial dysfunction induced by AA + iron. In addition, the Nrf2 and the Nrf2 target genes activation were increased by UCP. Conclusions : These results indicated that UCP has the ability to protect against oxidative stress-induced hepatocyte damage, which may be mediated with Nrf2 pathway.

• 대한의생명과학회지
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• 제16권4호
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• pp.239-246
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• 2010

It is suggested that ovariectomy induces body weight gain primarily in the form of adipose tissue in rodents. Since liver peroxisome proliferator-activated receptor ${\alpha}$ (PPAR${\alpha}$) and uncoupling 2 (UCP2) are involved in the regulation of energy expenditure, it was investigated whether swim training regulates ovariectomy-induced adiposity and steatosis through liver PPAR${\alpha}$ and UCP2 activation in female ovariectomized mice, an animal model of postmenopausal women. Swim-trained mice had significantly decreased adipose tissue weights compared with sedentary control mice. Histological analysis showed that hepatic lipid accumulation was inhibited by swim training. Concomitantly, swim training significantly increased mRNA levels of PPAR${\alpha}$ and its target genes responsible for peroxisomal fatty acid ${\beta}$-oxidation, such as acyl-CoA oxidase, enoyl-CoA hydratase/3-hydroxyacyl-CoA dehydrogenase and thiolase in the liver. Moreover, swim training induced the mRNA expression of UCP2. These results suggest that swim training can effectively prevent adiposity and steatosis caused by ovariectomy, in part through activation of liver PPAR${\alpha}$ and UCP2 in female obese mice.

• Journal of Yeungnam Medical Science
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• 제24권2호
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• pp.252-261
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• 2007

비만은 서구와 우리나라에서 가장 흔한 영양 관련 질환이며, 유전적, 환경적, 생활습관인자들에 의해 초래된다. 이 연구에서는 성인750명을 대상으로 ${\beta}_3AR$ Trp64Arg, UCP2 -866G/A 유전자 다형성을 PCR-RFLP법으로 조사한 후, 체질량지수와 비교하여 어떤 유전자의 다형성이 비만과 관련 있는지 분석하였다. ${\beta}_3AR$의 Trp64Arg의 다형성 분포는 Arg64Arg의 경우 체질량지수 27이상인 비만인에서만 관찰되었지만, 전체적으로 비만인과 정상인에서 통계적으로 유의한 차이가 없었다. UCP2 -866G/A 다형성의 분포는 G/A의 경우 비만인 에서, A/A의 경우 정상인에서 더 통계적으로 유의하게 높았다(p<0.05). 이상의 결과로부터 ${\beta}_3AR$ Trp64Arg 다형성에 비해 UCP2 -866G/A 다형성이 한국인에서 비만과 비만관련 질병을 예측하는데 더 유용한 것으로 판단된다.