• 제목/요약/키워드: acetaldehyde dehydrogenase

검색결과 127건 처리시간 0.023초

Aqueous extract of Laurus nobilis leaf accelerates the alcohol metabolism and prevents liver damage in single-ethanol binge rats

  • Jae In Jung;Yean-Jung Choi;Jinhak Kim;Kwang-Soo Baek;Eun Ji Kim
    • Nutrition Research and Practice
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    • 제17권6호
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    • pp.1113-1127
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    • 2023
  • BACKGROUND/OBJECTIVES: Excessive alcohol consumption has harmful health effects, including alcohol hangovers and alcohol-related liver disease. Therefore, methods to accelerate the alcohol metabolism are needed. Laurus nobilis is a spice, flavoring agent, and traditional herbal medicine against various diseases. This study examined whether the standardized aqueous extract of L. nobilis leaves (LN) accelerates the alcohol metabolism and protects against liver damage in single-ethanol binge Sprague-Dawley (SD) rats. MATERIALS/METHODS: LN was administered orally to SD rats 1 h before ethanol administration (3 g/kg body weight [BW]) at 100 and 300 mg/kg BW. Blood samples were collected 0.5, 1, 2, and 4 h after ethanol administration. The livers were excised 1 h after ethanol administration to determine the hepatic enzyme activity. The alcohol dehydrogenase (ADH), aldehyde dehydrogenase (ALDH), superoxide dismutase (SOD), and glutathione peroxidase (GPx) activities in the liver tissue were measured. RESULTS: LN decreased the serum ethanol and acetaldehyde levels in ethanol-administered rats. LN increased the hepatic ADH and ALDH activities but decreased the alanine aminotransferase, aspartate aminotransferase, and gamma-glutamyl transferase activities in the ethanol-administered rats. In addition, LN inhibited lipid peroxidation and increased the activities of SOD and GPx. CONCLUSIONS: LN modulates the mediators of various etiological effects of excessive alcohol consumption and enhances the alcohol metabolism and antioxidant activity, making it a potential candidate for hangover treatments.

알코올성 간 손상을 유발한 흰쥐에 대한 고 분지아미노산 함유 옥수수 단백가수물의 간 기능 보호효과 (Protective Effects of Branched-chain Amino Acid (BCAA)-enriched Corn Gluten Hydrolysates on Ethanol-induced Hepatic Injury in Rats)

  • 정용일;배인영;이지연;전향숙;이현규
    • 한국식품과학회지
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    • 제41권6호
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    • pp.706-711
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    • 2009
  • 옥수수 글루텐 가수분해물(corn gluten hydrolysates, CGH)의 알코올 대사 및 간 기능 보호효과에 대한 효과를 알아보았다. 즉, 흰쥐에게 4주간 시료를 함유한 알코올을 경구투여함에 의해 간 손상을 유도시키고, 혈액 중 생화학적 간 기능 지표(ALP, GOT, GPT), 간세포 내 항산화 효소(SOD, GPX, catalase)와 지질과산화물(MDA) 및 알코올 대사와 관련된 효소(ADH, ALDH, MEOS)의 활성을 조사하였다. 또한 알코올 섭취에 따른 경시적인 ethanol과 acetaldehyde 농도에 대한 시료의 효과를 분석하였다. 알코올성 간 손상을 입은 흰쥐의 체중변화 및 간 중량에 대한 에탄올 투여 및 CGH의 효과는 보이지 않았으며, 식이섭취량은 정상군에 비해 CGH 섭취군에서 유의적으로 감소하였다. 알코올 섭취로 증가된 혈중 ALP 활성은 CGH 처치로 30% 감소한 반면, GOT 및 GPT 활성은 유의적인 변화를 보이지 않았다. 알코올성간 손상에 따른 체내 항산화 반응계 중 catalase 효소활성은 알코올 투여군에 비해 CGH 처리군에서 79%까지 유의적으로 감소하였다. ADH 활성은 유의적인 차이를 보이지 않았으나, ALDH 활성은 알코올 투여 대조군에 비해 CGH군에서 20% 정도 유의적으로 증가하였다. 특히, CGH는 MEOS활성에 대해 농도 의존적으로 작용하여 3% CGH을 급여한 그룹에서는 알코올 투여 대조군에 비해 20%까지 활성이 감소하는 결과를 보였다. 알코올 단회 투여에 따른 경시적인 혈액 중 ethanol 농도는 유의적인 차이가 없었다. 그러나 acetaldehyde 농도는 CGH 투여에 의해 급격히 감소하였고, 시간에 따른 곡선 하 면적으로 환산한 결과, 약 60% 정도 감소한 효과를 보였다. 이상과 같이, CGH는 알코올대사과정 중 ALDH 및 MEOS 활성에 작용하여 체내 알코올성 간 손상에 대한 간 기능 보호효과와 함께 ethanol 대사산물인 acetaldehyde의 체내 배출을 촉진시키는 기능성 소재로 활용이 가능함을 알 수 있었다.

알로에 베라 젤 및 껍질 추출물의 생리활성 평가 (Biological Activity of Aloe Vera Gel and Skin Extracts)

  • 조은혜;김소영;방순일;김동청;인만진;채희정
    • KSBB Journal
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    • 제29권6호
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    • pp.437-442
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    • 2014
  • In vitro biological activities of Aloe vera gel and skin extracts were evaluated. Total polyphenol contents of Aloe vera skin were measured 41.12 mg/g. DPPH radical scavenging activity of Aloe vera skin-70% EtOH extract, Aloe vera skin-water extract, Aloe vera gel-70% EtOH extract and Aloe vera gel-water extract were 55%, 38%, 11% and 10%, respectively. In addition, 70% EtOH extract and water extract were compared with respect to SOD-like antioxidant activity of Aloe vera-70% EtOH extract has higher activity than Aloe vera water extract. Tyrosinase inhibition rate of Aloe vera gel extract was higher than Aloe vera skin extract. Alcohol dehydrogenase (ADH) and Acetaldehyde dehydrogenase (ALDH) relative percentage activity of Aloe vera gel extract were 126% and 216%, respectively. It was suggested that Aloe vera gel and skin extracts could be used as a functional biomaterial for functional food and cosmetics.

Hypoglycemic Effect and Hepatic Detoxification Activity of Extracts from Crataegus fructus and Morus alba L. in Alcohol-treated Rats

  • Kim, Ji-Su
    • 대한의생명과학회지
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    • 제13권1호
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    • pp.17-23
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    • 2007
  • To consider potentially new sources which have hypoglycemic effect and accelerating alcohol detoxification, this study was designed to investigate the effect of Crataegus fructus and Morns alba L. in alcohol-treated rats. I compared the body weight, glucose, aspartate aminotransferase (AST), alanine aminotransferase (ALT), alcohol dehydrogenase (ADH), and aldehyde dehydrogenase (ALDH) of rats administered both alcohol and extract of experimental plants to rats treated with alcohol alone. Administration of extracts of C. fructus and M alba, respectively, resulted in a significant reduction in the blood glucose level and the activities of ADH of liver compared to the control rats, and administration of extract of M. alba showed significantly lower on bodyweight gain in the rats than in other treated rats. In contrast, the activities of ALDH of liver were increased. The activities of AST and ALT between the only alcohol-treated rats and the alcohol and experimental plants-treated rats were no significant difference. The results suggest that C. fructus and M alba have a hypoglycemic effect, and reduce liver damage by accelerating acetaldehyde metabolism in alcoholic rats, so the combined effect of C. fructus and M alba may be considered as an alternative remedy for hangovers, alcohol-induced overweight and alcohol-induced diabetes.

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대장균에서 사람 ALDH2 유전자의 발현 (Expression of Human ALDH2 Gene in escherichia coli)

  • 곽보연;이기환;정한승
    • 한국식품영양학회지
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    • 제10권2호
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    • pp.268-271
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    • 1997
  • 사람의 미토콘드리아에 있는 aldehyde dehydrogenase(ALDH2)는 체내에서 알코올 대사 과정 중에 생성되는 아세트알데히드를 산화시키는 주된 역할을 담당하고 있다. 이 ALDH2가 알코올 대사에 미치는 영향을 연구하기 위하여 가용화된 효소가 필요하다. 알려져 있는 유전자의 염기서열 데이터를 바탕으로 ALDH2의 cDNA는 cDNA 라이브러리에서 선별하였으며, 이를 여러 가지 대장균 발현벡터에 연결하였다. 제조한 발현벡터를 형질전환시킨 대장균을 사용하여 단백질의 발현을 확인한 결과 대부분의 계에서 ALDH가 과발현되고 있었다. 그러나 발현된 단백질의 대부분은 inclusion body로 형성되어, 실제로 가용화된 효소의 양은 전체 발현된 양의 5% 이하 였고 이들 몇 가지 발현 system으로 재조합 미오2DML 발현을 확인하였다.

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Elucidation of the Regulation of Ethanol Catabolic Genes and ptsG Using a glxR and Adenylate Cyclase Gene (cyaB) Deletion Mutants of Corynebacterium glutamicum ATCC 13032

  • Subhadra, Bindu;Lee, Jung-Kee
    • Journal of Microbiology and Biotechnology
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    • 제23권12호
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    • pp.1683-1690
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    • 2013
  • The cyclic AMP receptor protein (CRP) homolog, GlxR, controls the expression of several genes involved in the regulation of diverse physiological processes in Corynebacterium glutamicum. In silico analysis has revealed the presence of glxR binding sites upstream of genes ptsG, adhA, and ald, encoding glucose-specific phosphotransferase system protein, alcohol dehydrogenase (ADH), and acetaldehyde dehydrogenase (ALDH), respectively. However, the involvement of the GlxR-cAMP complex on the expression of these genes has been explored only in vitro. In this study, the expressions of ptsG, adhA, and ald were analyzed in detail using an adenylate cyclase gene (cyaB) deletion mutant and glxR deletion mutant. The specific activities of ADH and ALDH were increased in both the mutants in glucose and glucose plus ethanol media, in contrast to the wild type. In accordance, the promoter activities of adhA and ald were derepressed in the cyaB mutant, indicating that glxR acts as a repressor of adhA. Similarly, both the mutants exhibited derepression of ptsG regardless of the carbon source. These results confirm the involvement of GlxR on the expression of important carbon metabolic genes; adhA, ald, and ptsG.

Production of Indole-3-acetate in Corynebacterium glutamicum by Heterologous Expression of the Indole-3-pyruvate Pathway Genes

  • Kim, Yu-mi;Kwak, Mi-hyang;Kim, Hee-sook;Lee, Jin-ho
    • 한국미생물·생명공학회지
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    • 제47권2호
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    • pp.242-249
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    • 2019
  • Biosynthesis of indole-3-acetate (IAA) from L-tryptophan via indole-3-pyruvate pathway requires three enzymes including aminotransferase, indole-3-pyruvate decarboxylase, and indole-3-acetate dehydrogenase. To establish a bio-based production of IAA, the aspC, ipdC, and iad1 from Escherichia coli, Enterobacter cloacae, and Ustilago maydis, respectively, were expressed under control of the tac, ilvC, and sod promoters in C. glutamicum. Cells harboring ipdC produced tryptophol, indicating that the ipdC product is functional in this host. Analyses of SDS-PAGE and enzyme activity revealed that genes encoding AspC and Iad1 were efficiently expressed from the sod promoter, and their enzyme activities were 5.8 and 168.5 nmol/min/mg-protein, respectively. The final resulting strain expressing aspC, ipdC, and iad1 produced 2.3 g/l and 7.3 g/l of IAA from 10 g/l L-tryptophan, respectively, in flask cultures and a 5-L bioreactor.

Effects of a Health Drink Containing the Extract of the Hovenia Dulcis Fruit Stalk and Theracurmin, on Ethanol-Induced Hangover

  • Kang, Nam E;Oh, Yoon Sin;Yeo, Hee Kyung;Baik, Hyun Wook;Jang, Se-Eun
    • 한국식생활문화학회지
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    • 제36권6호
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    • pp.563-570
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    • 2021
  • The fruit stalk of Hovenia dulcis (H.dulcis) is traditionally used to relieve hangovers in Korea. Theracurmin is a highly absorbable curcumin preparation which increases the bioavailability of curcumin. Curcumin is known for its antioxidant and anti-inflammatory effects. However, the role of this combination in lowering alcohol levels in the body, thereby alleviating the severity of alcohol-induced hangover has not been investigated. Therefore, we conducted a study to investigate the eliminatory effects of a health drink containing the extract of the H. dulcis fruit stalk and theracurmin (theracurmin drink) on ethanol-induced hangover in rats. The theracurmin drink delivered orally to rats 30 mins before the administration of 40% ethanol (5 g/kg body weight), lowered the concentration of ethanol and acetaldehyde in the blood samples collected 1, 3, and 5 h after ethanol administration. Furthermore, the theracurmin drink increased the activities of alcohol dehydrogenase and aldehyde dehydrogenase enzymes. The effectiveness of the theracurmin drink was thus superior to that of other health drink products, suggesting that its consumption may alleviate or prevent an alcohol-induced hangover.

일반메밀과 쓴메밀의 식초 추출물의 알코올 대사 및 숙취개선 효능 평가 (Evaluation of the Effects of Hangover-Releasing Agent Containing Vinegar Extract in Common Buckwheat and Tartary Buckwheat on Alcohol Metabolism and Hangover Improvement)

  • 김수정;손황배;박아현;이종남;박수형;남정환;김도연;장동칠;김율호
    • 한국자원식물학회지
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    • 제36권5호
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    • pp.435-445
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    • 2023
  • 메밀은 루틴과 콜린을 많이 함유한 기능성 작물로 항산화, 항염증, 항당뇨 등의 효과가 있는 것으로 알려져 있다. 일반메밀과 쓴메밀 식초추출물의 알코올대사와 숙취해소에 대한 효능을 비교 평가하기 위해 혈중 알코올 분해능, 혈액과 간조직의 Alcohol dehydrogenase (ADH) 및 Acetaldehyde dehydrogenase (ALDH) 효소 측정, 간 조직의 Superoxide Dismutase (SOD)와 Catalase 농도를 분석하였다. 루틴 함량은 쓴메밀 종실에서 일반메밀 종실보다 55배 높았다. 콜린 함량은 쓴메밀 식초 추출물에서 약간 높게 나타났다. 알코올 분해능은 대조군에 비해 쓴메밀군에서 36.0%의 알코올 농도 감소 효과를 보여 유의한 알코올 분해 효과가 인정되었다. 혈중 아세트알데하이드 농도는 대조군에서는 시간이 경과할수록 증가하였으나, 일반메밀군은 120분, 쓴메밀군은 90분에 최고치 도달 후 감소하여 숙취 개선 효능이 확인되었다. 또한, 혈액과 간 조직의 ADH와 ALDH 효소 활성은 대조군에 비해 메밀처리군에서 증가하는 경향을 보여 숙취해소 효과가 모두 인정되었으며, 일반메밀군보다 쓴메밀군에서 더 우수하였다. 간 조직의 SOD와 Catalase 활성도 일반메밀보다 쓴메밀군에서 각각23%, 37% 고도로 유의미하게 높았다. 이상의 결과를 요약하면, 일반메밀과 쓴메밀 식초추출물은 모두 숙취해소에 효과가 있었으며, 특히 루틴 함량이 높은 쓴메밀 '황금미소'는 일반메밀보다 숙취해소 소재로 개발하는데 활용 가능성이 높을 것으로 판단되었다.

단감 잎 추출물의 생리 활성 (Physiological activities of water extracts from sweet persimmon leaves)

  • 손지영;안광환;김은경;최성태;이동욱;박혜원;이승철
    • 한국식품과학회지
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    • 제52권4호
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    • pp.363-368
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    • 2020
  • 단감연구소에서 출하 시기 조절을 위해 육성된 중생종 단감 신품종 홍추와 기존 재배품종 상서조생, 서촌조생, 부유 3품종의 잎 추출물을 제조하여 생리활성을 비교하였다. 그 결과, 홍추의 잎 추출물의 총페놀 함량, Vit. C 함량, DPPH 및 ABTS 라디칼 소거능, ADH 활성에 미치는 영향이 다른 추출물에 비하여 유의하게 높다는 결과를 얻을 수 있었다. ADH 활성도는 부유의 잎 추출물에서 다른 품종에 비해 비교적 높게 나타났다. 이상의 결과는 신품종 단감 홍추의 잎을 이용한 고품질 감잎차의 제조가 가능함을 시사한다.