Microbial quality of surface water and subsurface soil after wildfire.

Runoff from wildfire affected areas typically carries high concentrations of fine burned residues or eroded sediment and deposits them in surface water bodies or on subsurface soils. Although the role of wildfire residues in increasing the concentration of chemical contaminants in both environments is known, whether and to what degree wildfire residues may affect microbial contaminants is poorly understood. To examine the effect of wildfire residues on growth and die-off of Escherichia coli (E.

Author Correction: A cell-free platform for the prenylation of natural products and application to cannabinoid production.

In the original version of this Article, the genotype of the M30 mutant presented in Fig. 3b was given incorrectly as Y288V/A232S, and the M31 mutant was given incorrectly as M1/A232S. The correct genotype of the M30 mutant is Y288A/A232S and for M31 it is Y288V/A232S.

Genome-wide association study identifies loci associated with liability to alcohol and drug dependence that is associated with variability in reward-related ventral striatum activity in African- and European-Americans.

Genetic influences on alcohol and drug dependence partially overlap, however, specific loci underlying this overlap remain unclear. We conducted a genome-wide association study (GWAS) of a phenotype representing alcohol or illicit drug dependence (ANYDEP) among 7291 European-Americans (EA; 2927 cases) and 3132 African-Americans (AA: 1315 cases) participating in the family-based Collaborative Study on the Genetics of Alcoholism. ANYDEP was heritable (h in EA = 0.

Genome-wide association studies of alcohol dependence, DSM-IV criterion count and individual criteria.

Genome-wide association studies (GWAS) of alcohol dependence (AD) have reliably identified variation within alcohol metabolizing genes (eg, ADH1B) but have inconsistently located other signals, which may be partially attributable to symptom heterogeneity underlying the disorder. We conducted GWAS of DSM-IV AD (primary analysis), DSM-IV AD criterion count (secondary analysis), and individual dependence criteria (tertiary analysis) among 7418 (1121 families) European American (EA) individuals from the Collaborative Study on the Genetics of Alcoholism (COGA). Trans-ancestral meta-analyses combined these results with data from 3175 (585 families) African-American (AA) individuals from COGA.

A cell-free platform for the prenylation of natural products and application to cannabinoid production.

Prenylation of natural compounds adds structural diversity, alters biological activity, and enhances therapeutic potential. Because prenylated compounds often have a low natural abundance, alternative production methods are needed. Metabolic engineering enables natural product biosynthesis from inexpensive biomass, but is limited by the complexity of secondary metabolite pathways, intermediate and product toxicities, and substrate accessibility.

Alcohol-Induced Increases in Inflammatory Cytokines Are Attenuated by Nicotine in Region-Selective Manner in Male Rats.

Background: Heavy use of alcohol is commonly associated with heavy smoking (nicotine intake). Although many factors, including mood effects of these two drugs may contribute to their co-use, the exact neurobiological underpinnings are far from clear. It is well known that chronic alcohol exposure induces neuroinflammation that may precipitate depressive-like behavior, which is considered an important factor in alcohol relapse.

Low Vs. High Alcohol: Central Benefits Vs. Detriments.

The dose-dependent effects of alcohol, where the initial euphoric and stimulant effects initiated by the exposure to low ethanol levels can quickly lead to a deadly consequence are well established. Thus, high blood alcohol concentration (BAC), as seen in alcoholics, can cause significant damage to various organs. At low concentrations (e.

Effects of Cd vacancies and unconventional spin dynamics in the Dirac semimetal CdAs.

CdAs is a Dirac semimetal that is a 3D analog of graphene. We investigated the local structure and nuclear-spin dynamics in CdAs via Cd NMR. The wideline spectrum of the static sample at 295 K is asymmetric and its features are well described by a two-site model with the shielding parameters extracted via Herzfeld-Berger analysis of the magic-angle spinning spectrum.

Role of cortical alpha-2 adrenoceptors in alcohol withdrawal-induced depression and tricyclic antidepressants.

Introduction: Although a role for alpha-2 adrenoceptors (alpha-2 ARs) in alcohol use disorder (AUD) and depression is suggested, very little information on a direct interaction between alcohol and these receptors is available.

Methods: In this study adult female Wistar and Wistar-Kyoto (WKY) rats, a putative animal model of depression, were exposed to alcohol vapor 3h daily for 10days (blood alcohol concentration ∼150mg%) followed by daily injection of 10mg/kg of imipramine (IMP, a selective norepinephrine NE/serotonin reuptake inhibitor) or nomifensine (NOMI, a selective NE/dopamine reuptake inhibitor). On day 11 animals were tested for open field locomotor activity (OFLA) and forced swim test (FST) and were sacrificed 2h later for measurement of alpha-2 ARs densities in the frontal cortex and hippocampus using [3H]RX 821002 as the specific ligand.

Beliefs and Preferences for Medical Research Among African-Americans.

Background And Objectives: Numerous factors contribute to underrepresentation of African-Americans in medical research, including beliefs, historical events, structural, and health access obstacles. This study examined beliefs about medical research and the types of study methods preferred among potential African-American research participants.

Methods: A sample of 304 African-American participants from the Washington, DC Metropolitan area, completed a survey evaluating beliefs about medical research and preferred research study methods.

Activation of HIV-1 with Nanoparticle-Packaged Small-Molecule Protein Phosphatase-1-Targeting Compound.

Complete eradication of HIV-1 infection is impeded by the existence of latent HIV-1 reservoirs in which the integrated HIV-1 provirus is transcriptionally inactive. Activation of HIV-1 transcription requires the viral Tat protein and host cell factors, including protein phosphatase-1 (PP1). We previously developed a library of small compounds that targeted PP1 and identified a compound, SMAPP1, which induced HIV-1 transcription.

Impact of a multicomponent screening, brief intervention, and referral to treatment (SBIRT) training curriculum on a medical residency program.

Background: Substance-related disorders are a growing problem in the United States. The patient-provider setting can serve as a crucial environment to detect and prevent at-risk substance use. Screening, brief intervention, and referral to treatment (SBIRT) is an integrated approach to deliver early intervention and treatment services for persons who have or are at risk for substance-related disorders.

Genetic testing for the susceptibility to alcohol dependence: interest and concerns in an African American population.

Background: The search to identify genes for the susceptibility to alcohol dependence (AD) is generating interest for genetic risk assessment. The purpose of this study is to examine the level of interest and concerns for genetic testing for susceptibility to AD.

Methods: Three hundred four African American adults were recruited through public advertisement.

Evaluation of the influence of alcohol dehydrogenase polymorphisms on alcohol elimination rates in African Americans.

Introduction: The relationship between alcohol dehydrogenase (ADH) polymorphisms and alcohol use disorders in populations of African descent has not been clearly established. This study examined the effect of ADH1B polymorphisms on alcohol metabolism and subjective response, following intravenous (IV) alcohol administration, and the influence of gender, recent drinking history, and family history of alcoholism (FHA), in nondependent African American drinkers.

Materials: The sample included eighty-seven 21- to 35-year-old, light social drinkers of African descent.

Alcohol dependence and health care utilization in African Americans.

Objective: Ethnic and cultural differences in patterns of alcohol use disorders must be understood in order to address improvement in prevention of such disorders and accessibility to health care services. The purpose of this study was to evaluate factors that influence the utilization of medical and mental health services among alcohol-dependent and non-alcohol-dependent African Americans.

Method: A cohort of 454 African Americans was evaluated.

Nicotine Blocks the Depressogenic Effects of Alcohol: Implications for Drinking-Smoking Co-Morbidity.

Alcohol and nicotine are two very commonly abused legal substances. Although various hypotheses for such co-dependence have been suggested, it is not known whether the effects of alcohol and nicotine on mood behavior may also contribute to such co-abuse. Chronic exposure to high alcohol levels may lead to various neurochemical changes and precipitate depressive-like behavior.

NMR probe of metallic states in nanoscale topological insulators.

A 125Te NMR study of bismuth telluride nanoparticles as a function of particle size revealed that the spin-lattice relaxation is enhanced below 33 nm, accompanied by a transition of NMR spectra from the single to the bimodal regime. The satellite peak features a negative Knight shift and higher relaxivity, consistent with core polarization from p-band carriers. Whereas nanocrystals follow a Korringa law in the range 140-420 K, micrometer particles do so only below 200 K.

Institutional incorporation of screening, brief intervention, and referral to treatment (SBIRT) in residency training: achieving a sustainable curriculum.

The success of implementing a screening, brief intervention and referral to treatment (SBIRT) program within a medical residency program for sustainability is contingent upon a well-crafted training curriculum that incorporates substance abuse education and clinical practice skills. The goal of the Howard University (HU) SBIRT program is to train residents in providing culturally competent evidence-based screening, brief intervention and referral to treatment for patients who have a substance use disorder or who are at risk for developing the disorder. Utilizing the Office of Graduate Medical Education (GME) allows all residents to be trained in SBIRT techniques and receive continuing education in SBIRT and SBIRT-related topics through new resident orientation and the core lecture series.

Screening, brief intervention, and referral to treatment: public health training for primary care.

Objectives: The purpose of this study was to elucidate changes in attitudes, experiences, readiness, and confidence levels of medical residents to perform screening, brief intervention, and referral to treatment (SBIRT) and factors that moderate these changes.

Methods: A cohort of 121 medical residents received an educational intervention. Self-reported experience, readiness, attitude, and confidence toward SBIRT-related skills were measured at baseline and at follow-up.

The 5-HTTLPR polymorphism moderates the effect of stressful life events on drinking behavior in college students of African descent.

Covault et al. [Covault et al. (2007); Biol Psychiatry 61(5): 609-616] reported that the common functional polymorphism, 5-HTTLPR, in the serotonin transporter gene moderated the association between past-year stressful events and daily reports of drinking in a sample of European-American (EA) college students.

Perceptions about genetic testing for the susceptibility to alcohol dependence and other multifactorial diseases.

Background: Beliefs, attitudes, and preferences about the risk and benefits of genetic testing are important determinants of willingness to undergo testing.

Aims: The purpose of this study was to evaluate the perceived importance of genetic testing for alcohol dependence compared with other multifactorial diseases among African Americans.

Methods: Surveys were conducted with 258 participants using the Genetic Psycho-Social Implications (GPSI) questionnaire to evaluate several areas of hypothetical genetic testing for alcohol dependence.

Positive and negative effects of alcohol and nicotine and their interactions: a mechanistic review.

Nicotine and alcohol are two of the most commonly abused legal substances. Heavy use of one drug can often lead to, or is predictive of, heavy use of the other drug in adolescents and adults. Heavy drinking and smoking alone are of significant health hazard.

Alcohol induced depressive-like behavior is associated with a reduction in hippocampal BDNF.

Strong positive correlation between depression and alcoholism is evident in epidemiological reports. However, a causal relationship for this co-morbidity has not been established. We have observed that chronic daily exposure to a relatively high dose of alcohol can induce depressive-like behavior in rats and that pretreatment with nomifensine or imipramine can block the "depressogenic" effects of alcohol.