0000000000537893

AUTHOR

Henrike Scholz

showing 3 related works from this author

Genetic contribution to alcohol dependence: Investigation of a heterogeneous german sample of individuals with alcohol dependence, chronic alcoholic …

2017

The present study investigated the genetic contribution to alcohol dependence (AD) using genome-wide association data from three German samples. These comprised patients with: (i) AD; (ii) chronic alcoholic pancreatitis (ACP); and (iii) alcohol-related liver cirrhosis (ALC). Single marker, gene-based, and pathway analyses were conducted. A significant association was detected for the ADH1B locus in a gene-based approach (puncorrected = 1.2 × 10-6; pcorrected = 0.020). This was driven by the AD subsample. No association with ADH1B was found in the combined ACP + ALC sample. On first inspection, this seems surprising, since ADH1B is a robustly replicated risk gene for AD and may therefore be …

0301 basic medicinemedicine.medical_specialtyCirrhosislcsh:QH426-470alcohol dependenceMedizinGenome-wide association studyLocus (genetics)610 Medicine & healthGastroenterologyArticle03 medical and health sciencesLiver diseaseInternal medicineGeneticsMedicine610 Medicine &amp; healthAllele frequencyGenetics (clinical)genome-wide association studybusiness.industryAlcohol dependencealcohol dehydrogenaseADH1Bchronic alcoholic pancreatitisalcohol dependence; chronic alcoholic pancreatitis; alcoholic liver cirrhosis; genome-wide association study; alcohol dehydrogenase; <i>ADH1B</i>; <i>ADH1C</i>medicine.diseaseADH1CADH1Blcsh:Genetics030104 developmental biologyPancreatitisalcoholic liver cirrhosisbusiness
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XRCC5 as a Risk Gene for Alcohol Dependence : Evidence from a Genome-Wide Gene-Set-Based Analysis and Follow-up Studies in Drosophila and Humans

2015

Genetic factors play as large a role as environmental factors in the etiology of alcohol dependence. Although genome-wide association studies (GWAS) enable systematic searches for loci not hitherto implicated in the etiology of alcohol dependence, many true findings may be missed due to correction for multiple testing. The aim of the present study was to circumvent this limitation by searching for biological system-level differences, and then following up these findings in humans and animals. Gene-set based analysis of GWAS data from 1333 cases and 2168 controls identified 19 significantly associated gene-sets of which five could be replicated in an independent sample. Clustered in these ge…

MaleRiskAdolescentMedizinGenome-wide association studyBiologyPolymorphism Single NucleotideWhite PeopleAnimals Genetically ModifiedRNA interferenceGermanyGenetic variationAnimalsHumansGene silencingGenetic Predisposition to DiseaseKu AutoantigenGeneGenetic associationPharmacologyGeneticsEthanolAlcohol dependenceDNA HelicasesCentral Nervous System DepressantsPhenotypeAlcoholismPsychiatry and Mental healthDrosophila melanogasterFemaleOriginal ArticleFollow-Up StudiesGenome-Wide Association Study
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Octopamine Shifts the Behavioral Response From Indecision to Approach or Aversion in Drosophila melanogaster

2018

Animals must make constant decisions whether to respond to external sensory stimuli or not to respond. The activation of positive and/or negative reinforcers might bias the behavioral response towards approach or aversion. To analyze whether the activation of the octopaminergic neurotransmitter system can shift the decision between two identical odor sources, we active in Drosophila melanogaster different sets of octopaminergic neurons using optogenetics and analyze the choice of the flies using a binary odor trap assay. We show that the release of octopamine from a set of neurons and not acetylcholine acts as positive reinforcer for one food odor source resulting in attraction. The activat…

0301 basic medicineTβhCognitive NeuroscienceSensory systemOptogeneticsPositive Reinforcerdecision makinglcsh:RC321-57103 medical and health sciencesBehavioral Neurosciencechemistry.chemical_compound0302 clinical medicineethanol attractionoctopaminefood odoraversionNeurotransmitterlcsh:Neurosciences. Biological psychiatry. NeuropsychiatryOriginal ResearchbiologyOctopamine (drug)biology.organism_classificationAttraction030104 developmental biologyNeuropsychology and Physiological PsychologychemistryOdorDrosophila melanogasterNeuroscience030217 neurology & neurosurgeryNeuroscienceattractionFrontiers in Behavioral Neuroscience
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