Live
- Wild Elephant Gets Stuck at Rail Track Fence Forest Department Frees Animal
- Kolar’s Compassionate Leap: Mechanical Elephant Leads Temple Procession
- Centre to unveil startups under new National Quantum Mission guidelines
- Women’s protest rally in Imphal against re-imposition of AFSPA in 6 police station areas
- Greater Nicobar Island project has all environmental clearances: Govt
- Fadnavis leaves for Delhi, expected to meet Amit Shah along with Shinde, Ajit Pawar
- HYDRA-Relocated Residents Struggling with Severe Maintenance Issues at New Dignity Housing Colony
- BGT 2024-25: Jasprit Bumrah is one of the best in the world, says Pat Cummins
- BIS to develop standards for 214 critical medical devices by 2025 end
- HM Amit Shah pens story of co-operatives revival, gets thumbs up from PM Modi
How does prenatal alcohol exposure raise addiction risk
Babies\' exposure to alcohol in the womb causes alteration in the brain\'s reward system, which then increases their risk for drug addiction later in life, according to a study.
Babies' exposure to alcohol in the womb causes alteration in the brain's reward system, which then increases their risk for drug addiction later in life, according to a study.
The key appears to lie with endocannibinoids -- cannabis-like chemicals that are produced by the brain itself, the research showed.
After the prenatal brain is exposed to alcohol, these endocannibinoids impact certain dopamine neurons -- that are involved in addicted behaviours.
The endocannibinoids weaken the excitatory synapses onto dopamine neurons, in the ventral tegmental area (VTA) -- part of the brain implicated in addiction, attention and reward processes.
"The end result is that the dopamine neurons in the brain become more sensitive to a drug of abuse's effect. So, later in life, a person needs much less drug use to become addicted," said Roh-Yu Shen, senior research scientist at the University at Buffalo.
However, in a brain that is prenatally exposed to alcohol, the effect of the endocannabinoids is reduced due to a decreased function of endocannabinoid receptors.
As a result, the excitatory synapses lose the ability to be weakened and continue to strengthen, which Shen believes is a critical brain mechanism for increased addiction risk, Shen said, in the paper detailed in The Journal of Neuroscience.
"By understanding the role endocannibinoids play in increasing the brain's susceptibility to addiction, we can start developing drug therapies or other interventions to combat that effect and, perhaps, other negative consequences of prenatal alcohol exposure," Shen noted.
Prenatal alcohol exposure is the leading preventable cause of birth defects and neurodevelopmental abnormalities.
Foetal Alcohol Spectrum Disorders (FASD) cause cognitive and behavioural problems. In addition to increased vulnerability of alcohol and other substance use disorders, FASD can lead to other mental health issues including attention deficit hyperactivity disorder (ADHD), depression, anxiety and problems with impulse control.
