Background: Alcohol use disorder (AUD) is a major public health concern and cause of mortality and morbidity. Alcohol-associated liver disease (ALD) is a debilitating complication of AUD, mitigated by abstinence from alcohol use. Deep brain stimulation (DBS) is emerging as a potential treatment for AUD.
View Article and Find Full Text PDFCue reactivity is the maladaptive neurobiological and behavioral response upon exposure to drug cues and is a major driver of relapse. A widely accepted assumption is that drugs of abuse result in disparate dopamine responses to cues that predict drug vs. natural rewards.
View Article and Find Full Text PDFPlant hosts can gain significant growth benefits from symbiosis with microbes, but these benefits could be threatened by divergent fitness interests among partners. Here, we measured fitness outcomes in symbiosis, by varying the genotypes of both microbes and hosts, to examine scenarios that might favor uncooperative symbionts. We studied associations between Acmispon strigosus, an annual legume native to California, and its nitrogen fixing symbionts in the genus Bradyrhizobium.
View Article and Find Full Text PDFBackground: Mild behavioral impairment (MBI) has been associated with global brain atrophy, but the regional neural correlates of MBI symptoms are less clear, particularly among community-dwelling older individuals without dementia.
Objective: Our objective was to examine the associations of MBI domains with gray matter (GM) volumes in a large population-based sample of older adults without dementia.
Methods: We performed a cross-sectional study of 1445 community-dwelling older adults in the Atherosclerosis Risk in Communities Study who underwent detailed neurocognitive assessment and brain magnetic resonance imaging in 2011-2013.