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Showing posts from September, 2017

Younger mothers are more likely to engage in risky drinking during and after pregnancy

Researchers recruited 456 pregnant women, ages 13 to 42 years, at an urban prenatal clinic. The women (64% African-American, 36% White) were interviewed about alcohol use during pregnancy, at delivery, and again at six, 10, 14, and 16 years postpartum. The majority of mothers (66%) were identified as having low-risk trajectories of alcohol use during the 17-year span. However, maternal age at first birth predicted one high-risk group: younger mothers were more likely to engage in risky drinking early in pregnancy, which continued for six to 14 years postpartum. The authors suggest that these results can help physicians target mothers who are likely to exceed national guidelines calling for abstinence during pregnancy, and no more than seven drinks per week during postpartum. for more information visit our product website: Buy Caverta 100 mg Online 

Eleven minutes of mindfulness training helps drinkers cut back

After an 11-minute training session and encouragement to continue practising mindfulness -- which involves focusing on what's happening in the present moment -- heavy drinkers drank less over the next week than people who were taught relaxation techniques, according to the study published in the  International Journal of Neuropsychopharmacology . "We found that a very brief, simple exercise in mindfulness can help drinkers cut back, and the benefits can be seen quite quickly," said the study's lead author, Dr Sunjeev Kamboj (UCL Clinical Psychopharmacology Unit). The researchers brought in 68 drinkers, who drink heavily but not to the point of having an alcohol use disorder. Half of them were trained to practise mindfulness, which teaches a heightened awareness of one's feelings and bodily sensations, so that they pay attention to cravings instead of suppressing them. They were told that by noticing bodily sensations, they could tolerate them as tempora...

Magic enzymes in 'magic' mushrooms analyzed

For centuries, Central American cultures considered  Psilocybe mushrooms to be divine and used them for spiritual purposes. More recently, they have been called magic mushrooms and used for their hallucinogenic effects. These mushroom drugs may soon also be in use as pharmaceuticals that treat the existential anxiety of advanced-stage cancer patients, depression, and nicotine addiction. Their effects stem from tryptamines, which are chemical derivatives of the amino acid L-tryptophan and structural relatives of the neurotransmitters serotonin and melatonin. Among these, psilocybin is the primary chemical mushroom component. Psilocybin is an inactive precursor that is rapidly activated when consumed: splitting off a phosphate group results in the actual active ingredient, psilocin. Although the structure of psilocybin has been known for about 60 years, it has not been possible to decode the enzymatic basis of its biosynthesis. Researchers working with Dirk Hoffmeister at the F...

Given the choice, zebrafish willingly dose themselves with opioids

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Zebrafish at College of Utah Well being Centralized Zebrafish Animal Useful resource (CZAR) facility. Credit score: College of Utah Well being Because the opioid disaster escalates, the science behind dependancy stays poorly understood. To handle this want, researchers at College of Utah Well being devised a system that allowed zebrafish, a small tropical fish, to self-administer doses of hydrocodone, an opioid generally prescribed to folks for ache. After one-week, the fish had elevated their drug-seeking habits, even when doing so required them to place themselves in dangerous circumstances. Additional, 48-hours after the final publicity, conditioned fish confirmed indicators of hysteria, a trademark of withdrawal. Printed August 25 on-line within the journal  Behavioral Mind Analysis , this research affords a brand new method to discover the organic pathways behind dependancy and withdrawal that might result in new therapies to deal with depen...

Genetics, ethnicity can influence pathway between early drinking and alcohol use disorders

Researchers examined 604 college students recruited from the University of California, San Diego: 214 of Korean ancestry (107 men, 107 women), 200 of European ancestry (106 men, 94 women), and 190 of Chinese ancestry (99 women, 91 men), each with both biological parents having the same heritage. Participants were genotyped for the  ALDH2*2  variant allele and completed a self-report assessment. The effect of ADI as a risk factor for developing AUD symptoms varied with both ethnicity and  ALDH2*2  status. ADI was not associated with AUD symptoms in Korean-Americans with an  ALDH2*2  allele or in Chinese-Americans regardless of  ALDH2*2 status. This indicates that being Korean (and having the protective  ALDH2*2  allele) or Chinese buffered the risk for developing AUD symptoms associated with an early ADI. Although an earlier ADI places some individuals at risk to develop AUD symptoms, the path from ADI to AUD symptoms is complex and ca...

Cosmetic surgery may help patients quit smoking

"Our results show an association between cosmetic surgery and smoking cessation at long-term follow-up," comments lead author Aaron C. Van Slyke, MD, MSc, of University of British Columbia, Vancouver. "Surgeons who request preoperative smoking cessation may influence patients' long-term smoking status." Many Cosmetic Surgery Patients Quit or Reduce Smoking The follow-up study included 85 patients who were smokers when evaluated for cosmetic surgery. Like most plastic surgeons, Dr. Van Slyke and colleagues required patients to refrain from smoking for at least two weeks before elective procedures. Those instructions reflect a well-demonstrated increase in wound healing problems and other negative outcomes among smokers after plastic surgery. Five years after cosmetic surgery, 47 patients responded to a follow-up survey. Most of the patients were women; the average age was 40 years. The most common procedures were "tummy tuck" (abdominoplasty), ...

E-cigarettes can help smokers quit, but there's a catch

The findings, published in  Nicotine & Tobacco Research , examined a national survey of more than 24,500 current or recent former cigarette smokers, which is the largest sample of smokers studied to date. This study, along with a July study published in the  BMJ , provide some of the strongest evidence so far on the link between use of e-cigarettes and cessation, says the study's lead author David Levy, PhD, professor of oncology at Georgetown Lombardi. However, Levy notes, there are important nuances in the data that impact a person's success in quitting cigarette smoking. "Both cigarette quit attempts and quit success were directly related to the number of days of e-cigarette use," Levy explains. "The odds of quit success increased by 10 percent with each additional day of e-cigarette use." The data also show that among those making at least one quit attempt, quit success was lower among individuals who had used e-cigarettes at some point in th...

Serotonin is a neurotransmitter which helps brain cells communicate with one another, playing important roles in stabilising mood and regulating stress. Despite its importance, current models to explain serotonin's function in the brain remain incomplete. Now, in a review paper published this month in the Journal of Psychopharmacology, researchers from Imperial College London suggest that serotonin pathways are more nuanced than previously thought. They argue that the existing view should be updated to incorporate a 'two-pronged' model of how serotonin acts. The researchers believe their updated model could have implications for treating recalcitrant mental health conditions, including depression, obsessive compulsive disorder and addiction, and could exploit the therapeutic potential of psychedelic drugs. In the brain, serotonin acts via a number of sites called 'receptors' and serotonin has at least 14 of these. Brain drugs such antidepressants, antipsychotics and psychedelics are known to interact with serotonin receptors and two of these are thought to be particularly important -- the so-called serotonin 1A and 2A receptors. For patients with depression, commonly prescribed drugs called SSRIs (Selective Serotonin Reuptake Inhibitors) can help to relieve symptoms by boosting levels of serotonin in the brain. Evidence suggests an important part of how they work is to increase activity at the serotonin 1A receptor, which reduces brain activity in important stress circuitry, thereby helping a person cope better. In contrast, psychedelic compounds such as LSD and psilocybin (the psychoactive component of magic mushrooms), are thought to act primarily on the serotonin 2A receptor. Accumulating evidence suggests that psychedelics with psychotherapy can be an effective treatment for certain mental illnesses and, with a focus on the 2A receptor, the authors' paper attempts to explain why. Writing in the review paper, the researchers say that while the traditional view of developing psychiatric treatments has been focused on promoting 1A activity and often blocking the 2A, the therapeutic importance of activating the 2A pathway -- the mechanism by which psychedelics have their effect -- has been largely overlooked. "We may have got it wrong in the past," said Dr Robin Carhart-Harris, Head of Psychedelic Research at Imperial and lead author on the paper. "Activating serotonin 2A receptors may be a good thing, as it makes individuals very sensitive to context and to their environment. Crucially, if that is made therapeutic, then the combination can be very effective. This is how psychedelics work -- they make people sensitive to context and 'open' to change via activating the 2A receptor." According to the researchers, the 1A and 2A pathways form part of a two-pronged approach which may have evolved to help us adapt to adversity. By triggering the 1A pathway, serotonin can make situations less stressful, helping us to become more resilient. However, they argue that this approach may not always be enough, and that in extreme crises, the 2A pathway may kick in to rapidly open a window of plasticity in which fundamental changes in outlook and behaviour can occur. Growing evidence shows that in conditions such as treatment-resistant depression, obsessive compulsive disorder and addiction, certain brain circuitry may become 'stamped in' and resistant to change. The researchers suggest that in such cases, activating the 2A pathway -- such as through psychedelics -- could potentially offer a way to break the cycle, helping patients to change negative behaviours and thought patterns which have become entrenched. By enabling the brain to enter into a more adaptive or 'plastic' state and providing patients with a suitably enriched clinical environment when they receive a drug treatment, clinicians could create a window for therapy, effectively making patients more receptive to psychotherapy. According to the authors, their updated model of how serotonin acts in the brain could lead to a shift in psychiatric care, with the potential to move patients from enduring a condition using current pharmacological treatments, to actively addressing their condition by fundamentally modifying behaviours and thinking. Professor David Nutt, Director of Neuropsychopharmacology in Imperial's Division of Brain Sciences, explained: "This is an exciting and novel insight into the role of serotonin and its receptors in recovery from depression that I hope may inspire more research into develop 5-HT2A receptor drugs as new treatments." Dr Carhart-Harris added: "I think our model suggests that you cannot just administer a drug in isolation, at least certainly not psychedelics, and the same may also true for SSRIs. We need to pay more attention to the context in which medications are given. We have to acknowledge the evidence which shows that environment is a critical component of how our biology is expressed." He added: "In psychiatry, as in science, things are rarely black and white, and part of the approach we're promoting is to have a more sophisticated model of mental healthcare that isn't just a drug or psychotherapy, it's both. I believe this is the future." 'Serotonin and brain function: a tale of two receptors' by Robin Carhart-Harris and David Nutt is published in the Journal of Psychopharmacology.

A Finnish research group worked with 11 young men and 16 young women who had a heavy 10-year alcohol use, and compared them with 12 young men and 13 young women who had little or no alcohol use. All were between 23 to 28 years old at the time the measurements were taken. The researchers examined the responses of the brain to being stimulated by magnetic pulses -- known as Transcranial Magnetic Stimulation (TMS), which activates brain neurons. The brain activity was measured using EEG (electroencephalogram). Previously, the researchers had found that heavy alcohol users showed a greater electrical response in the cortex of the brain than non-alcohol users, which indicates that there had been long-term changes to how the brain responds. This time, they found that young men and young women responded differently, with males showing a greater increase in electrical activity in the brain in response to a TMS pulse. As researcher Dr Outi Kaarre (University of Eastern Finland and Kuopio ...

Rethinking serotonin could lead to a shift in psychiatric care

Serotonin is a neurotransmitte r which helps brain cells communicate with one another, playing important roles in stabilising mood and regulating stress. Despite its importance, current models to explain serotonin's function in the brain remain incomplete. Now, in a review paper published this month in the Journal of Psychopharmacology, researchers from Imperial College London suggest that serotonin pathways are more nuanced than previously thought. They argue that the existing view should be updated to incorporate a 'two-pronged' model of how serotonin acts. The researchers believe their updated model could have implications for treating recalcitrant mental health conditions, including depression, obsessive compulsive disorder and addiction, and could exploit the therapeutic potential of psychedelic drugs. In the brain, serotonin acts via a number of sites called 'receptors' and serotonin has at least 14 of these. Brain drugs such antidepressants, anti...

Long-term opioid prescription use jumps threefold over 16-year period, study suggests

Long-term use, which is associated with greater risk for addiction and overdose, increased threefold during the study's time frame. In 1999-2000, less than half of the people who were taking prescription opioids were taking them for 90 days or more. By 2013-2014, more than 70 percent were taking opioid medication on a long-term basis. The findings come as the U.S. grapples with a worsening opioid epidemic that on average is killing nearly 100 people a day, some from prescription opioids and others from illegal forms, primarily heroin. Last month, the Trump administration declared the opioid epidemic a public health emergency, a step that will allow the government to dispense additional federal funds for treatment. The study, published online in the journal  Pharmacoepidemiology and Drug Safety , draws from survey data gathered by the National Health and Nutritional Examination Survey, which the National Center for Health Statistics has conducted every two years since 1999-20...