Ethnic/Racial Differences in Metabolism and DNA Adduct Formation
2020年9月30日 更新者:Masonic Cancer Center, University of Minnesota
Ethnic/Racial Differences in Metabolism and DNA Adduct Formation by 1,3-butadiene
The study will investigate the role of 1,3-butadiene metabolic activation and deactivation in lung cancer risk among various ethnic/racial groups.
This project will require urine samples from smokers and nonsmokers from the three ethnic/racial groups recruited by the Clinical and Biomarker Core for the analysis of 1,3-butadiene DNA adducts.
Data on nicotine intake (urinary TNE) in these subjects as well as in 400 lung cancer cases and 400 controls from Project 1 will be also required for this project.
研究概览
研究类型
观察性的
参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
21年 及以上 (成人、年长者)
接受健康志愿者
是的
有资格学习的性别
全部
取样方法
非概率样本
研究人群
Approximately 300 smokers will be recruited from the Multiethnic Cohort (MEC) study or the general population in Hawai'i
描述
Inclusion Criteria:
One of the three targeted ethnic groups:
- Japanese American - two parents of Japanese descent
- Non-Hispanic Whites - two parents of non-Hispanic white descent
- Native Hawaiians will include individuals with at least one parent of Hawaiian descent;
- Smoke 5 cigarettes per day over the past three months;
- >21 years of age;
- Consumes 14 or fewer drinks of alcohol per week;
- Generally stable and good health (determined by review of medical history);
- Able to provide written voluntary consent before performance of any study related procedure.
Exclusion Criteria:
- Current use of other nicotine containing products for > 4 times per month (and no use of any nicotine-containing products except cigarettes for 2 weeks prior to their study visits);
- Acute or uncontrolled medical or psychiatric conditions;
- Currently taking any medications that affect relevant metabolic enzymes or anti- inflammatory medications such as ibuprofen (this will be reviewed by study investigators on a case-by-case basis);
- Active infection (e.g., influenza, cold, respiratory infection, sinus infection) at the time of the visit;
- Pregnant or nursing or planning on becoming pregnant during the study;
- Unable to read and understand English.
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
队列和干预
团体/队列 |
干预/治疗 |
---|---|
Japanese American
Two parents of Japanese descent
|
One to two home visits where tobacco use and medical history and biological samples will be collected including blood, buccal cells and urine
|
Non-Hispanic Whites
Two parents of non-Hispanic white descent
|
One to two home visits where tobacco use and medical history and biological samples will be collected including blood, buccal cells and urine
|
Native Hawaiians
At least one parent of Hawaiian descent
|
One to two home visits where tobacco use and medical history and biological samples will be collected including blood, buccal cells and urine
|
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 |
---|---|---|
Butadiene-DNA adducts in different ethnic groups
大体时间:Day 1 & 2
|
Investigate ethnic differences in butadiene-DNA adducts in smokers belonging to different ethnic groups.
|
Day 1 & 2
|
Butadiene-DNA adduct load in smokers with lung cancer
大体时间:Day 1 & 2
|
Investigate the association between butadiene-DNA adduct load and lung cancer development in smokers.
|
Day 1 & 2
|
Polymorphisms of carnicogen metabolizing genes
大体时间:Day 1 & 2
|
Examine how polymorphisms of carcinogen metabolizing genes influence metabolic inactivation, DNA adduct formation/repair, and toxicity of butadiene-derived epoxides.
|
Day 1 & 2
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员:Dorothy Hatsukami, Ph.D.、University of Minnesota, Department of Psychiatry
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (预期的)
2020年10月1日
初级完成 (预期的)
2023年6月1日
研究完成 (预期的)
2023年6月1日
研究注册日期
首次提交
2018年1月23日
首先提交符合 QC 标准的
2018年1月29日
首次发布 (实际的)
2018年2月5日
研究记录更新
最后更新发布 (实际的)
2020年10月5日
上次提交的符合 QC 标准的更新
2020年9月30日
最后验证
2020年9月1日
更多信息
与本研究相关的术语
其他研究编号
- 2017NTLS019
药物和器械信息、研究文件
研究美国 FDA 监管的药品
不
研究美国 FDA 监管的设备产品
不
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.