Articles tagged with Drug Addiction
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Researchers found that brain-derived neurotrophic factor (BDNF) and its receptor TrkB play a crucial role in age-specific responses to stimulants. The study suggests that BDNF/TrkB might be used as a target for new treatments for childhood neuropsychiatric disorders or addiction.
Researchers used fMRI to show that cocaine-related images stimulate activity in the limbic system, a brain network involved in emotion and reward, even when subjects are unaware they've seen anything. The study suggests new drug treatment strategies by targeting the brain's sensitivity to conditioned drug cues.
A genetic study of 14,000 people found two genes, alpha 3 and alpha 5 nicotinic receptor subunits, to be associated with an increased risk of heavy smoking. The implicated DNA variants can be used to predict ability to quit using existing medications, potentially leading to more efficient treatment.
Researchers found that 77% of methadone users with low levels had no significant cardiac abnormalities, while 60% of non-methadone users had identifiable evidence of cardiac disease. The study suggests a link between methadone and sudden cardiac death, potentially necessitating additional safeguards before therapy.
A comprehensive gene atlas has been created to understand drug addiction, revealing five molecular pathways common to four different addictive substances. The atlas is based on an integrative meta-analysis of scientific literature and provides a more complete picture of the genetic factors underlying addiction.
A study by Andrew Chambers found that rats with damaged amygdalas showed abnormal behavior related to fear and fearlessness, as well as greater cocaine sensitivity. This suggests that brain conditions may alter addiction vulnerability independently of drug history.
A study found that state Medicaid policies, such as restricting access to pharmacy networks and preferred drug lists, limit the use of naltrexone, an inexpensive therapy proven to reduce problem drinking. Changing these policies could increase naltrexone's availability and address the huge financial burden of alcohol abuse.
Researchers found that Deep Brain Stimulation (DBS) actually speeds up decision-making in Parkinson's patients, contrary to expectations. The study suggests that DBS affects the brain's ability to deliberate on complicated decisions by interrupting the 'hold-your-horses' signal.
Researchers propose a new approach to treating psychiatric disorders by focusing on an individual's need for internal balance. Studies suggest that decision-making is linked to maintaining homeostatic balance, which can be disrupted in individuals with addictions and psychiatric disorders.
Chilean researchers have identified a brain region that plays a role in drug craving in amphetamine-addicted rats. The insular cortex processes information about the body's physiological states and guides behavior, indicating its potential as a target for treating drug addiction.
Researchers at UMass Chan Medical School found that an initial experience of relaxation in response to nicotine is the strongest predictor of future addiction among sixth-graders. Other factors that predicted addiction include familiarity with cigarette advertising, novelty-seeking personality and depressed mood.
Research reveals a key mechanism by which gene expression is modified in response to addictive drugs, identifying a splicing factor as a critical regulator. This study provides new insights into the molecular underpinnings of addiction and offers promising avenues for developing novel treatments.
Researchers found that rats most susceptible to addictive drugs had stronger nicotinic acetylcholine receptor responses, which can increase brain excitation and reward. This suggests that targeting these receptors may be a promising approach for treating multiple addictions.
A play about substance abuse was successful in prompting audience members to participate in prevention activities. After seeing the play, participants were more likely to talk about substance abuse, donate money to organizations, and volunteer time.
A recent study found that morphine's effectiveness in pain relief does not correlate with patient survival time. In fact, patients with no opioid experience are at risk of respiratory depression, while those with moderate-to-severe chronic pain are not. This challenges the common misconception that morphine is deadly.
Researchers discovered how nicotine adjusts neuronal wiring to enhance memory, including effects on GABAergic neurons and calcium-mediated signaling. This work provides insights into the mechanism of nicotine's learning-enhancing effects, which may lead to development of new treatments for cognitive deficits.
Researchers at the University of Cambridge have made a breakthrough in understanding why some individuals may be predisposed to drug addiction. They found that certain changes in brain chemistry pre-date drug use and are linked to impulsivity. This discovery could lead to more targeted treatments for addiction with fewer side effects.
A Penn State College of Medicine pilot study found that 89 percent of participants with diagnosed Crohn's disease showed improvement with low-dose naltrexone therapy, while 67 percent achieved remission. This novel approach offers a simple and safe treatment option for the chronic inflammatory disorder.
Researchers found that damage to the insula, a brain region linked to emotion and feelings, enables smokers to quit instantly. The discovery opens new directions for therapies targeting this specific region.
Researchers confirm that tobacco manufacturers have steadily increased the levels of nicotine in cigarettes since 1998, with an average annual increase of 1.6%. This re-analysis also found that design features such as puff count and flavor types contribute to increased addiction.
A new study has identified dihydrocodeine as an equally effective alternative to expensive methadone treatment for heroin addiction. The prescription painkiller is cheaper, safer and less toxic, with estimated annual costs of £713 compared to £1,500 for methadone.
Researchers found that adolescent smokers are more vulnerable to AUDs due to nicotine's impact on the brain's central reward circuitry. The study, published in Alcoholism: Clinical & Experimental Research, suggests smoking can make adolescents more susceptible to addictions beyond just alcohol.
Researchers propose a new classification system for addictive drugs based on their effect on dopamine levels in the brain. This new classification may help in directing research towards more effective treatment of addiction.
A new study from the University of Michigan finds that the brain chemical dopamine is involved in both pleasure and pain responses, with variations between individuals affecting vulnerability to drug addiction. The research may help explain why some people are more prone to developing addictions during times of stress or chronic pain.
Researchers found PPM abuse varies greatly across US states, differing from traditional illicit drug trends. States with large metropolitan areas often have lower abuse rates despite perceptions of city dwellers being more prone to drug use.
Research at Brookhaven National Laboratory found that cocaine-addicted individuals have a flattened sensitivity to relative monetary rewards, making it harder to inhibit maladaptive behavior. This altered perception of reward is linked to changes in the prefrontal cortex, a brain region essential for monitoring and controlling behavior.
Researchers identified brain circuits motivating desire to overeat in obese individuals, linked to the same circuits that cause addicted individuals to crave drugs. The study found significant changes in brain metabolism associated with emotional behaviors and eating habits.
Researchers found that blunt smokers associate clinical symptoms with nicotine rather than marijuana dependence. The study of 92 blunts users in New York City suggests tobacco's presence may foster dependence on blunts.
Scientists create radioactively tagged molecules for positron emission tomography (PET) scans, providing insights into addiction and brain function. The radiotracers help monitor drug distribution and receptor activity in the brain, revealing key factors in addiction.
A study published in BMC Public Health found that drug users who were coerced into treatment had a higher risk of dropping out. The proportion of individuals who completed treatment decreased from 5.8% to 3.5% between 1998 and 2002, while the number of re-presentations increased by 48.6%
Researchers at University at Buffalo found that methamphetamine increases expression of DC-SIGN receptor, allowing more virus to invade the immune system and promote HIV infection. The study suggests that dopamine receptor blockers could be beneficial in reducing HIV infection in high-risk populations.
A new study reveals that Pycnogenol, a French maritime pine bark extract, significantly reduces hyperactivity and improves attention, concentration, and motor-visual coordination in children with ADHD. The study's findings suggest that Pycnogenol may serve as a safe and effective treatment for children diagnosed with ADHD.
Researchers discovered that nicotine activates specific receptors in dopamine-producing neurons, leading to increased responsiveness and triggering exploratory behaviors. The study suggests a hierarchical role of two receptor subunits in regulating the response to nicotine.
Researchers found increased dopamine levels in the dorsal striatum, a part of the brain involved in desire and motivation, when cocaine addicts watched a video featuring people using cocaine. This increase was associated with craving levels and largest in severely addicted subjects.
A study analyzing data from over 7,250 patients in Zurich found a significant decrease in new heroin users between 1990 and 2002. The incidence of heroin use dropped from 850 to 150, while the overall number of heroin dependents only declined by 4% per year.
A recent study by Penn State researchers found that 89% of patients with diagnosed Crohn's disease showed improvement with therapy using naltrexone, while 67% achieved remission of symptoms. The treatment has been shown to be simple, safe, and cost-effective compared to traditional steroid treatments.
A study comparing therapeutic communities in the US, China, and Thailand will examine client and program characteristics to understand treatment effectiveness. The research aims to advance substance abuse treatment services globally by developing a standardized model.
Recent medical advances in drug treatment for alcoholics are seen as positive news, but recovery requires a combination of treatments addressing physical, psychological, and spiritual needs. Dr. Marvin D. Seppala emphasizes the need to better define specific subgroups for medication therapies.
A small study found that frequent tanners experience withdrawal symptoms when the 'feel-good' chemicals induced by ultraviolet light are blocked. The researchers tested whether exposure to UV light produces endorphins, brain chemicals linked to pain relief and euphoric feelings.
Pitt researchers identify critical brain area regulating dopamine function, which could explain disruptions in normal behaviors and psychiatric disorders like schizophrenia and drug addiction. The discovery provides new insights into the brain's reward system and its role in modulating goal-directed behavior.
A University of Minnesota study found that telephone support for smokers was more effective in helping them quit than standard medical care. The study, published in Archives of Internal Medicine, showed that 40% of participants who received telephone support had not smoked in the previous seven days after three months.
Researchers from the UAB have found a direct relationship between morphine addiction and a tendency to explore perseveringly in rats. The study suggests that individuals with a greater propensity to seek new sensations may be more likely to develop an addiction to morphine.
Researchers found that orexin A induces adaptation necessary for drug-craving behaviors in human addicts. The peptide signaling pathways for orexin and CRF may prove fruitful targets in the search for addiction medications.
A team of researchers, led by Xia Zhang, has discovered a potential universal strategy for treating drug addiction. They found that a naturally occurring enzyme called PTEN acts on the ventral tegmental area (VTA) of the brain, where many drugs of abuse exert their rewarding effects.
A new study finds that the herbal supplement NAC can help reduce cocaine cravings in individuals undergoing treatment for cocaine addiction. The research, conducted at the ACNP Annual Meeting, showed that NAC-treated subjects had reduced brain activity in the prefrontal cortex and reported less craving for cocaine.
A new study using an animal model suggests that anabolic steroids can be addictive. Hamsters showed a marked preference for testosterone, nandrolone or drostanolone, indicating the drugs' potential for addiction. The research highlights the need for awareness among coaches and mental health professionals about this risk.
A new study published in Neuropsychopharmacology found that bupropion significantly reduced methamphetamine cravings and diminished the 'high' associated with its use. The research suggests that bupropion prevents methamphetamine from entering brain cells, reducing feelings of euphoria.
A new targeted drug has been developed to prevent long-term changes in brain cells that contribute to addiction. The peptide works by tricking cellular machinery into pulling the glutamate receptor back onto the surface, restoring normal communication between neurons.
The NIH has renewed a network focused on understanding how genes influence drug responses, aiming to create personalized therapies with fewer side effects. The network will explore various genetic factors affecting medication efficacy and toxicity across nine NIH components.
A study by Ohio State University researchers found that a genetic variation in the mu opioid receptor gene may make brain cells more vulnerable to addictive drugs. The A118G variation resulted in reduced protein production and altered mRNA regulation, potentially increasing an individual's susceptibility to addiction.
Researchers found reduced MAO A levels in smokers' lungs, which may contribute to physiological effects of smoking like changes in blood pressure and pulmonary function. Smokers also retained tracer chemicals longer and had lower delivery into arterial blood supply.
Research by Dr Andrew Lawrence and Cameron McPherson found adolescent rats exposed to amphetamine had a more sensitised reaction when re-administered as adults, increasing the risk of heart attack. The study suggests teenage experimentation with drugs may have long-term effects on brain function.
A study published in Addictive Behaviors suggests that shame, not guilt, is related to substance-abuse problems. The research found that individuals prone to shame may use alcohol and other drugs to cope with feelings of self-blame, while those who experience guilt are less likely to develop substance-use problems.
The study found that gamblers and alcoholics have unique personality traits affecting their cravings, with gambling craving linked to positive emotions and alcohol craving tied to negative emotions. The research suggests that individuals with distinct emotional regulation patterns are more vulnerable to addiction.
A study by Yale University researchers found office-based buprenorphine treatment reaches individuals who are unable to use methadone, with key demographic differences including age, sex, and employment status. The treatment has shown success in reaching patients with lower rates of injection drug use and hepatitis C infection.
A study by Ohio State University found that benzodiazepines are widely prescribed for sleep disorders, with nearly two-thirds of visits resulting in medication prescriptions. The study also showed disparities in prescription patterns based on age, insurance type, and physician specialty.
A new study at Rockefeller University shows that contingency management treatment significantly increases patient success rates and improves the morale of clinic staff and administration. The treatment method uses positive reinforcement to encourage constructive actions towards recovery.
A randomized, controlled study evaluated four behavioral drug abuse treatments for reducing methamphetamine use and risky sexual behavior among gay and bisexual methamphetamine addicts. Treatment produced immediate, three-fold reductions in both methamphetamine use and risky sexual behavior.
Researchers have identified a potential therapeutic application for the new drug Nifrolidine in treating nicotine addiction and Alzheimer's disease. The study found that Nifrolidine binds to specific brain receptors implicated in these conditions, offering hope for early diagnosis and treatment.
Researchers at the University of Minnesota have developed a computational model of addiction that connects learning theories with neurophysiological mechanisms. The model uses temporal-difference reinforcement learning to simulate how addictive drugs impact brain function and behavior.