The association between the OPRM1A118G (rs1799971" genes_norm="4988">Asn40Asp, rs1799971) polymorphism and alcohol use disorders and alcohol consumption was analyzed using three different population-based samples: (a) a Finnish cohort study, Health 2000, with 503 participants having a DSM-IV diagnosis for alcohol dependence and/or alcohol abuse and 506 age- and sex-matched controls; (b) a Finnish cohort study, FINRISK (n = 2360) and (c) the Helsinki Birth Cohort Study (n = 1384).
To study the impact of genetic factors that play an important role in an individual's vulnerability to alcohol abuse and dependence, we examined the genetic variations of the major neurotransmitter genes, including the dopamine D2 receptor (DRD2) TaqI A, B, and -141C insertion/deletion (Ins/Del) polymorphisms, the serotonin transporter-linked polymorphic region (5-HTTLPR), and the gamma-aminobutyric acid A (GABA(A)) receptor beta(3) subunit gene (GABRbeta3), for 130 Mexican-American alcoholic men and 251 nonalcoholic control subjects (105 men and 146 women).
Positive markers identify the alcohol dehydrogenase (ADH) locus, flank the brain-derived neurotropic factor (BDNF) locus, and mark seven other regions previously linked to vulnerability to nicotine or alcohol abuse.
In humans, genetic polymorphisms of the enzymes alcohol dehydrogenase and aldehyde dehydrogenase are also associated with alcohol drinking habits and the incidence of alcohol abuse.
Among conventional markers of alcohol abuse, the mean corpuscular volume (MCV) of erythrocytes is prognostic of alcohol-related cancer and its predictivity increases when combined with functional polymorphisms of alcohol dehydrogenase (ADH1B [rs1229984] and ADH1C [rs698]) and the mitochondrial aldehyde dehydrogenase (ALDH2 [rs671]).
It is proposed that those individuals diagnosed with ADHD who also have a mutation in the dopamine receptor D4 (DRD4) and who possess a deficiency in functionality of the prefrontal area of the brain designed for planning and reasoning may be more likely to develop alcohol abuse.
Mutations in factor V or the prothrombin 20210A gene were significantly more frequent in patients with idiopathic osteonecrosis than in a population of healthy control subjects (odds ratio, 2.7; 95% confidence interval range, 1.2-5.8) and in patients with osteonecrosis caused by corticosteroid medication or alcohol abuse (odds ratio, 10.8; 95% confidence interval range, 1.4-84).
In Caucasians, C282YHFE homozygotes are numerous, but they are only predisposed to hemochromatosis; complete organ disease develops in a minority, due to alcohol abuse or concurrent genetic modifiers that are now being identified.
We conclude that neither the COMT nor DRD3 polymorphisms are associated with anxiety, depression, or alcohol abuse.Am.J. Med.Genet.(Neuropsychiatr.Genet.)96:102-107, 2000
Studies have examined the interaction of MAOA genotype with childhood maltreatment in relation to depressive symptomatology and alcohol abuse with conflicting findings.
For example, it has been shown that childhood maltreatment interacts with a monoamine oxidase A (MAOA) gene variant to predict antisocial behavior that is often associated with alcoholism, and an interaction between early life stress and a serotonin transporter promoter variant predicts alcohol abuse in nonhuman primates and depression in humans.
This study shows the association of hypertriglyceridemia and APOE allele with the early onset of alcoholic liver cirrhosis, and the interaction between environmental factors, such as duration of alcohol abuse and amount of alcohol intake, and genetic factors (APOE*2 allele) on the hypertriglyceridemic process.
These patients differed from patients without PCT in that they were men, past history of alcohol abuse and HFE gene mutations were more common and the source of infection was almost always unknown.
Concerning anxiety disorders and alcohol use disorders, the current findings are preliminary and need further verification to explain the association of ARNTL2, being suggestive only, with social phobia (rs2306073) and with alcohol abuse (rs7958822, rs4964057).
We studied the distribution of genotypes and alleles of the polymorphism -93A/G (137346 T/C) in the 5' UTR region of the fyn gene in 207 male heavy drinkers (119 with alcohol dependence and 88 with alcohol abuse) and 100 control subjects from Castilla y León (Spain).
The specificity of N Latex CDT for identifying alcohol abuse may be higher than for immunoassays that use column separation, because transferrin genetic variants do not interfere with measurements.