• 제목/요약/키워드: Non-alcoholic steatohepatitis

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Overview of RCT for Non-Alcoholic Fatty Liver Disease and Non-Alcoholic Steatohepatitis

  • Son, Chang-Gue
    • 대한한의학회지
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    • 제32권3호
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    • pp.44-49
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    • 2011
  • Objective: This study aimed to get information on the current status of therapies to date for non-alcoholic fatty liver disease (NAFLD), including non-alcoholic steatohepatitis (NASH). Methods: All randomized clinical controlled trial (RCT)-derived papers for NAFLD or NASH were reviewed via PubMed Database. Results: 39 RCTs met the review criteria, of which 15 and 24 papers were for NAFLD and NASH, respectively. 83% of the papers were released since 2006, and 30 studies were conducted for western medicines, antioxidants and lifestyle intervention whereas nine trials were done using herbal medicine or acupuncture which showed positive outcome. Conclusions: NAFLD and NASH are new epidemic disorders which can be a target of traditional Oriental medicine. This study will be helpful for the Oriental medicine-based strategies or therapeutic development for them.

A Case of Non-alcoholic Steatohepatitis Treated with Herbal Medicine

  • Son, Chang-Gue
    • 대한한의학회지
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    • 제32권3호
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    • pp.50-54
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    • 2011
  • Objective: To understand the characteristic of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH), and study the traditional Korean medicine (TKM)-based strategies or therapeutics for them. Methods: A male patient with NASH was treated with only Oriental therapies, and then the clinical outcome was evaluated by serum biochemical parameters and radiographs. Result: The clinical and biochemical values of the patient fluctuated over three years according to the treatments and cessation of herbal medicines. Conclusion: NASH or NAFLD are now prevalent and these disorders could be targets of TKM, and this case report would provide useful information.

Amomum villosum var. xanthioides의 에틸아세테이트 분획물이 항산화 활성을 통한 간 소포체 스트레스 유발 비알코올성 지방간 저해 (Ethyl Acetate Fraction of Amomum villosum var. xanthioides Attenuates Hepatic Endoplasmic Reticulum Stress-Induced Non-Alcoholic Steatohepatitis via Enhancement of Antioxidant Activities)

  • 안은정;신수영;이승영;이창민;최경민;정진우
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2021년도 춘계학술대회
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    • pp.60-60
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    • 2021
  • Non-alcoholic fatty liver disease (NAFLD), especially including non-alcoholic steatohepatitis (NASH) is one of the common diseases with 25% of prevalence globally, but there is no thera-peutic access available. Amomum villosum var. xanthioides (Wall. ex Baker) T.L.Wu & S.J.Chen (AX), which is a medicinal herb and traditionally used for treating digestive tract disorders in Asia countries. We aimed to examine pharmacological effects of ethyl acetate fraction of AX (AXEF) against ER stress-induced NASH mice model using C57/BL6J male mice by tunicamycin (TM, 2 mg/kg) injection focusing on the oxidative stress. Mice were orally administrated AXEF (12.5, 25, or 50 mg/kg), silymarin (50 mg/kg) or distilled water daily for 5 days, and outcomes for fatty liver, inflammation, and oxidative stress were measured in serum or liver tissue levels. AXEF drastically attenuated hepatic ER stress-induced NASH which were evidenced by decreases of li-pid droplet accumulations, serum liver enzymes, hepatic inflammations, and cell death signals in the hepatic tissue or serum levels. Interestingly, AXEF showed potent antioxidant effects by quenching of reactive oxidative stress and its final product of lipid peroxide in the hepatic tissue, specifically increase of metallothionein (MT). To confirm underlying actions of AXEF, we ob-served that AXEF increase MT1gene promoter activities in the physiological levels. Collectively, AXEF showed antioxidant properties on TM-induced ER stress of NASH by enhancement of MTs.

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소아에서의 비만과 인슐린 저항성 (Obesity and Insulin Resistance in Childhood)

  • 최광해
    • Journal of Yeungnam Medical Science
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    • 제29권2호
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    • pp.73-76
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    • 2012
  • More and more children are becoming obese and overweight due to several factors that include a high energy density in the diet (a high fat intake) and low energy expenditure. Consequently childhood obesity is becoming a significant health problem. Fat tissue releases many cytokines such as resistin, tumor necrosis factor-${\alpha}$, leptin, interleukin-6. These adipocytokines induce obesity-related insulin resistance. Insulin resistance is a key component of obesity-related metabolic problems such as hypertension, type 2 diabetes mellitus, dyslipidemia, non-alcoholic steatohepatitis, acanthosis nigricans and polycystic ovarian syndrome. This review article focused on insulin resistance and its related metabolic diseases.

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Experimental model and novel therapeutic targets for non-alcoholic fatty liver disease development

  • Yujin Jin;Kyung-Sun Heo
    • The Korean Journal of Physiology and Pharmacology
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    • 제27권4호
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    • pp.299-310
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    • 2023
  • Non-alcoholic fatty liver disease (NAFLD) is a complex disorder characterized by the accumulation of fat in the liver in the absence of excessive alcohol consumption. It is one of the most common liver diseases worldwide, affecting approximately 25% of the global population. It is closely associated with obesity, type 2 diabetes, and metabolic syndrome. Moreover, NAFLD can progress to non-alcoholic steatohepatitis, which can cause liver cirrhosis, liver failure, and hepatocellular carcinoma. Currently, there are no approved drugs for the treatment of NAFLD. Therefore, the development of effective drugs is essential for NAFLD treatment. In this article, we discuss the experimental models and novel therapeutic targets for NAFLD. Additionally, we propose new strategies for the development of drugs for NAFLD.

소아 비알코올성 지방간의 최신 지견 (Update on Non-alcoholic Fatty Liver Disease in Children)

  • 이경훈
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제12권sup1호
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    • pp.62-71
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    • 2009
  • Non-alcoholic fatty liver disease (NAFLD) is the most common cause of pediatric liver disease. Similar to NAFLD in adults, NAFLD in children is associated with obesity and insulin resistance and requires liver histology for diagnosis and staging. However, significant histological differences exist between adult and pediatric NAFLD. The rise in childhood obesity has been accompanied by an increase in pediatric NAFLD. Age, gender and race/ethnicity are significant determinants of risk, and sex hormones, insulin sensitivity and adipocytokines are implicated in the pathogenesis of pediatric NAFLD. There is no consensus for treatment of NAFLD, however, data suggest that diet, exercise and some pharmacological therapies may be of benefit. To evaluate and effectively treat pediatric NAFLD, the pathophysiology and natural history of the disease should be clarified and non-invasive methods for screening, diagnosis, and longitudinal assessment developed.

비만아에서 비알코올성 지방간염의 위험요인 (Risk Factors of Non-alcoholic Steatohepatitis in Childhood Obesity)

  • 윤은실;박용훈;최광해
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제10권2호
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    • pp.179-184
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    • 2007
  • 목 적: 비만 인구 증가와 함께 비알코올성 지방간염의 유병율이 증가하고 있어 이에 대한 관심이 높아지고 있지만, 비만아 중 비알코올성 지방간염 발생의 위험요인에 대한 연구는 별로 없는 실정이어서, 비만아 중 비알코올성 지방간염을 예측할 수 있는 위험 요인을 알아보고자 하였다. 방 법: 영남대학교 병원 소아 비만 클리닉을 방문한 비만아 84명을 대상으로 하였으며, ALT 40 IU/L 이하 (Group 1), 41 IU/L 이상(Group 2)로 나누었으며, 간염이 있는 경우에는 다른 원인에 의한 간염은 배제 시켰으며 나이와 총콜레스테롤, 고밀도와 저밀도 지단백 콜레스테롤, 중성지방, 비만도, 체지방률을 비교하고 빈도를 분석하였다. 결 과: 연령, 총콜레스테롤, 고밀도와 저밀도 지단백 콜레스테롤, 중성지방, 비만도, 체지방율의 평균을 비교하였을 때 1군에서는 연령이 $10.5{\pm}1.6$세, 2군은 $10.7{\pm}2.0$세였으며, 총콜레스테롤은 1군에서 $183.0{\pm}29.1$ mg/dL, 2군에서 $183.7{\pm}31.3$ mg/dL였고, 고밀도 지단백 콜레스테롤은 1군, 2군 각각 $53.0{\pm}10.2$ mg/dL, $55.7{\pm}13.0$ mg/dL, 저밀도 지단백 콜레스테롤은 1군에서 $113.4{\pm}30.2$ mg/dL, 2군에서 $113.0{\pm}30.0$ mg/dL, 중성지방은 1군에서 $99.4{\pm}62.9$ mg/dL, 2군에서 $114.2{\pm}47.3$ mg/dL, 비만도는 1군에서 $44.7{\pm}12.2%$, 2군에서 $47.9{\pm}15.1%$, 체지방률은 각각 $32.7{\pm}5.0%$, $34.0{\pm}4.8%$로 두 군 간에 통계적으로 유의한 차이가 없었으나, 이상지혈증의 분포는 총콜레스테롤, 고밀도와 저밀도 지단백 콜레스테롤은 두 군에서 통계적으로 유의한 차이가 없었으나, 중성지방은 110 mg/dL 이상인 경우가 1군에서 13명(28.9%), 2군에서 21명(53.8%)으로 2군에서 통계적으로 유의하게 많았다(p-value=0.023). 결 론: 비만아에서 비알코올성 지방간염을 예측할 수 있는 위험요인으로 중성지방이 유용할 것으로 생각된다.

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The expression and secretion of vimentin in the progression of non-alcoholic steatohepatitis

  • Lee, Su Jin;Yoo, Jae Do;Choi, Soo Young;Kwon, Oh-Shin
    • BMB Reports
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    • 제47권8호
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    • pp.457-462
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    • 2014
  • The pathogenesis of non-alcoholic steatohepatitis (NASH) is not fully understood. In the present study, both in vitro and in vivo vimentin expression and secretion in NASH were investigated. The exposure of palmitate and lipopolysaccharide (LPS) to HepG2 cells enhanced caspase-3 activity and vimentin expression, respectively. The combined effects of both treatments on vimentin expression and caspase-3 activation appeared to be synergic. In contrast, blockade of caspase-3 activity by zVADfmk resulted in a significant reduction of cleaved vimentin and secreted vimentin into the culture supernatant. Similarly, lipid accumulation and inflammation occurred in mice fed a methionine-choline-deficient diet; thus, vimentin expression and serum cleaved vimentin levels were increased. However, vimentin was not significantly upregulated, and no cleavage occurred in mice fed a high-fat diet. It was conclusively determined that lipid accumulation in hepatocytes induces apoptosis through a caspase-3 dependent pathway; whereas, LPS stimulates vimentin expression, leading to its cleavage and secretion. Increased vimentin fragment levels indicated the existence of substantial hepatocellular death via an apoptotic mechanism.

비알콜성지방간의 유병율과 병리기전에 대한 문헌적 고찰 (Overview for Prevalence and Pathology of Non-Alcoholic Fatty Liver Disease)

  • 박연화;유사라;손창규
    • 대한한방내과학회지
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    • 제32권1호
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    • pp.26-32
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    • 2011
  • Objectives : Non-alcoholic fatty liver disease (NAFLD) is known to be increasing and becoming a health-related issue worldwide. This study aimed to analyze its prevalence and characterize NAFLD. Methods : NAFLD-related papers were surveyed via PubMed and in Korean medical journals, and then the prevalence and pathology were reviewed. Results : The prevalence of NAFLD in the general population is around 10~30% worldwide. The prevalence of NAFLD in Korea is estimated as 15~30%, which is higher than in China and Japan. The most important etiological-factors of NAFLD include central obesity resulting from excessive calorie intake and less physical activity, which lead to adiponectin hypoactivity and insulin resistance. The Oriental medicine view point of NAFLD pathology is phlegm-dampness by dysfunction of free flow in liver. Conclusions : This study provided an overview of the prevalence and pathology of NAFLD, and can support the development of a strategy for traditional Korean medicine-based prevention or treatment of NAFLD.

GPx7 ameliorates non-alcoholic steatohepatitis by regulating oxidative stress

  • Kim, Hyeon Ju;Lee, Yoseob;Fang, Sungsoon;Kim, Won;Kim, Hyo Jung;Kim, Jae-woo
    • BMB Reports
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    • 제53권6호
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    • pp.317-322
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    • 2020
  • Non-alcoholic fatty liver disease (NAFLD) is one of the most common liver diseases. NAFLD can further progress to irreversible liver failure such as non-alcoholic steatohepatitis (NASH) fibrosis and cirrhosis. However, specific regulator of NASH-fibrosis has yet to be established. Here, we found that glutathione peroxidase 7 (GPx7) was markedly expressed in NASH fibrosis. Although GPx7 is an antioxidant enzyme protecting other organs, whether GPx7 plays a role in NASH fibrosis has yet to be studied. We found that knockdown of GPx7 in transforming growth factor-β (TGF-β) and free fatty acids (FFA)-treated LX-2 cells elevated the expression of pro-fibrotic and pro-inflammatory genes and collagen synthesis. Consistently, GPx7 overexpression in LX-2 cells led to the suppression of ROS production and reduced the expression of pro-fibrotic and pro-inflammatory genes. Further, NASH fibrosis induced by choline-deficient amino acid defined, high fat diet (CDAHFD) feeding was significantly accelerated by knockdown of GPx7, as evidenced by up-regulated liver fibrosis and inflammation compared with CDAHFD control mice. Collectively, these results suggest that GPx7 might be a novel therapeutic target to prevent the progression and development of NAFLD.