Health and Medical News and Resources

General interest items edited by Janice Flahiff

Cannabis during pregnancy endangers fetal brain development

Cannabis during pregnancy endangers fetal brain development.

From the 27 January 2014 Karolinski Institute press release

      IMAGE:   Professor Tibor Harkany has shown that the use of Cannabis during pregnancy endangers fetal brain development. The findings are presented online in the EMBO Journal in January 2014….

Click here for more information.An increasing number of children suffer from the consequences of maternal drug exposure during pregnancy, and Cannabis is one of the most frequently used substances. This motivated the study, published in the EMBO Journal, cunducted in mice and human brain tissue, to decipher the molecular basis of how the major psychoactive component from Cannabis called delta-9-tetrahydrocannabinol or THC affects brain development of the unborn foetus.

The study highlights that consuming Cannabis during pregnancy clearly results in defective development of nerve cells of the cerebral cortex, the part of the brain that orchestrates higher cognitive functions and drives memory formation. In particular, THC negatively impacts if and how the structural platform and conduit for communication between nerve cells, the synapses and axons, will develop and function. Researchers also identified Stathmin-2 as a key protein target for THC action, and its loss is characterized as a reason for erroneous nerve growth. It is stressed that Cannabis exposure in experimental models precisely coincided with the fetal period when nerve cells form connections amongst each other.

According to study leader Professor Tibor Harkany, who shares his time between Karolinska Institutet and the Medical University Vienna in Austria, these developmental deficits may evoke life-long modifications to the brain function of those affected. Even though not all children who have been exposed to Cannabis will suffer immediate and obvious deficits, Professor Harkany warns that relatively subtle damage can significantly increase the risk of delayed neuropsychiatric diseases.

“Even if THC only would cause small changes its effect may well be sufficient to sensitize the brain to later stressors or diseases to provoke neuropsychiatric illnesses in those affected in the future”, says Professor Harkany. “This concerns also the medical use of Cannabis, which should be avoided during pregnancy.”

January 30, 2014 Posted by | Medical and Health Research News | , , , , | Leave a comment

Pregnancies and Medicines

[From Pregnancies and Medicines]

“During pregnancy, any medicines you take, including over-the counter or prescription drugs, herbs, or supplements, can get into your baby’s system. Some medicines may be safe, but many are not. The decision about whether or not to take a medicine depends on the risks and benefits. You and your health care provider should make this choice together. Labels on prescription and over-the-counter drugs have information that can help with the decision.

Always speak with your health care provider before you start or stop any medicine. Not using medicine that you need may be more harmful to you and your baby than using the medicine.”

A Women’s Health Web Page includes great overview on this topic in Q&A format.

Additional Information at Pregnancies and Medicines includes Specific Conditions (as aspirin and flu shots), Patient Handouts (on many individual drugs), and Directories (as Find a Teratrogen Information Service to find answers about exposure questions during pregancy).

The Pregnancies and Medicines Web Site (part of MedlinePlus) includes information

August 6, 2010 Posted by | Consumer Health | , | Leave a comment

   

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