TWO DAY (RAPID) TOLERANCE TO ALCOHOL AND THE FAMILIAL RISK FOR ALCOHOLISM

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。我们之前的研究表明，在仔细控制大脑酒精暴露的同时，基于对大脑功能的主观和客观测量，对酒精的最初反应清楚地反映了酗酒家族史（FHA）的影响。急性（治疗期间）酒精耐受性也反映了FHA的影响，但没有那么强烈，也没有那么多的措施。我们建议通过以下四种方式提高检测FHA对酒精中毒急性耐受性影响的能力：我们将采用先进的方法，产生比我们以前的研究更早建立并维持更长时间的夹紧BrAC。2. 我们将完善大脑功能的相关测量方法；用高度可遗传的、可靠的、对酒精敏感的客观测量方法代替以往研究中效果较差的测量方法。3. 我们将使用改进的家族史阳性（FHP）状态定义来招募受试者。4. 在这项研究中，我们将在24小时后重复BrAC夹紧过程，以寻求第二次受控酒精暴露的放大效应，这在动物研究中经常观察到，被称为快速耐受性。BrAC的时间过程将在个人进行的两次夹持中各一次相同。这项研究将进行5年，是NIAAA资助的3项研究之一，其中包括最近更新的印第安纳酒精研究中心（IARC）的人类遗传学研究部分。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Our previous studies demonstrate that the initial response to alcohol, based on subjective and objective measures of brain function that are obtained while carefully controlling the brain's exposure to alcohol, clearly reflect the influence of a family history of alcoholism (FHA). Acute (within-session) tolerance to alcohol also reflected the influence of FHA, but not as strongly, nor in as many measures. We propose to improve our ability to detect the FHA influence on acute tolerance to alcoholism in four ways: 1. We will adopt advances in methodology yielding a clamped BrAC that is established earlier and maintained longer than in our previous studies. 2. We will refine the battery of dependent measures of brain function; substituting objective measures that are highly heritable, reliable, and sensitive to alcohol, for measures that were less effective in previous studies. 3. We will recruit subjects using an improved definition of family history positive (FHP) status. 4. In this study, we will repeat the BrAC clamping session 24 hours later, seeking the amplifying effect, of a second episode of controlled exposure to alcohol, that is often observed in animal studies where it is called rapid tolerance. The time course of BrAC will be identical in each of the 2 clamps that an individual undertakes. The research will be conducted over 5 years and is one of 3 studies funded by NIAAA comprising the Human Genetics Research Component of the recently renewed Indiana Alcohol Research Center (IARC), David Crabb, PI.