Genetics of Fatty Liver Disease in Children
Genetics of Fatty Liver Disease in Childhood Obesity.
This is a study to investigate genetic predisposition to hepatic steatosis and the expression of gluconeogenic and lipogenic genes in livers of obese children and adolescents.
Hypothesis 1: Common variants recently associated with variation in plasma TG levels identified in Genome Wide Association Studies (GWAS) (such as GCKR, PNPLA3) can affect accumulation of fat and subsequent development of Non Alcoholic Fatty Liver Disease (NAFLD). Gene variants act in additive or synergistic manner with progressive liver fat accumulation per additional risk allele.
Hypothesis 2: With increase in hepatic fat content NASH and fibrosis will increase. Furthermore, expression of lipogenic markers (SREBP1c) will increase.
研究概览
地位
条件
详细说明
研究类型
注册 (实际的)
联系人和位置
学习地点
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Connecticut
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New Haven、Connecticut、美国、06510
- Yale University
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
取样方法
研究人群
描述
Inclusion Criteria:
- between 7 and 18 years of age,
- overweight or obese with a BMI greater than the 85th percentile for age and gender, and
- be otherwise healthy.
Exclusion Criteria:
- the use of any medication that alters liver function, blood pressure, glucose or lipid metabolism and
- no use of any antipsychotic medication
- Youth on chronic anti-inflammatory medications or who consume alcohol are also excluded.
学习计划
研究是如何设计的?
设计细节
- 观测模型:队列
- 时间观点:预期
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
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Pediatric NAFLD Cohort
Overweight and obese children and adolescents at risk for non alcoholic fatty liver disease will undergo oral glucose tolerance testing (ogtt), genotyping, abdominal and liver magnetic resonance imaging (mri), and will provide a stool sample at baseline and at 2 year follow up.
A small subset will undergo liver biopsy to test for hepatic steatosis and nonalcoholic steatohepatitis.
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oral glucose tolerance test
genotyping to look for risk alleles
magnetic resonance imaging scan of abdomen and liver - abdominal and liver mri
stool sample taken to investigate metabolites
liver biopsy to examine for cellular change and steatosis
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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gene expression
大体时间:Baseline
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gene mutation allele variation identification measure via gene extraction
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Baseline
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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hepatic fat content
大体时间:2 years
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Abdominal MRI to measure liver fat and subcutaneous and visceral fat ratio done at baseline and 2 year follow up
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2 years
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glucose tolerance
大体时间:2 years
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glucose tolerance status measured by 3 hour oral glucose tolerance test done at baseline and 2 year follow up
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2 years
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其他结果措施
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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DNA gene sequencing of intestinal bacteria's
大体时间:2 years
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Measure microbiota diversity via stool samples to understand variance of triglycerides accumulation in liver
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2 years
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Use liver biopsy specimen to assess differences in gene expression, as well as inflammation.
大体时间:As indicated by Pediatric Hepatolgist
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liver biopsy tissue obtained when subject is scheduled for pre-ordered biopsy by hepatologist
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As indicated by Pediatric Hepatolgist
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合作者和调查者
调查人员
- 首席研究员:Sonia Caprio, M.D.、Yale University
出版物和有用的链接
一般刊物
- Burgert TS, Taksali SE, Dziura J, Goodman TR, Yeckel CW, Papademetris X, Constable RT, Weiss R, Tamborlane WV, Savoye M, Seyal AA, Caprio S. Alanine aminotransferase levels and fatty liver in childhood obesity: associations with insulin resistance, adiponectin, and visceral fat. J Clin Endocrinol Metab. 2006 Nov;91(11):4287-94. doi: 10.1210/jc.2006-1010. Epub 2006 Aug 15.
- Trico D, Caprio S, Rosaria Umano G, Pierpont B, Nouws J, Galderisi A, Kim G, Mata MM, Santoro N. Metabolic Features of Nonalcoholic Fatty Liver (NAFL) in Obese Adolescents: Findings From a Multiethnic Cohort. Hepatology. 2018 Oct;68(4):1376-1390. doi: 10.1002/hep.30035.
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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