Navigation Links
Estrogen May Combat Marijuana's Effect on Cognition
Date:4/20/2009

In study on rats, protection eludes those exposed as adolescents

MONDAY, April 20 (HealthDay News) -- Ovaries and the estrogen hormone they produce might help protect women from some of the learning and memory issues caused by the active ingredient in marijuana, Louisiana State University researchers predict, based on their study on rats.

The protection did not seem to apply, however, if the female rats were exposed to the drug during the time period equivalent to human adolescence.

The findings led the researchers to hypothesize that exposure to tetrahydrocannabinol, better known as THC, the main ingredient in marijuana, during the critical puberty and teenage development period of humans could have lifelong ramifications.

The study, though, involved only female rats so any implication for adolescent males remains untested.

The findings were to be presented April 19 in New Orleans at the Experimental Biology meeting sponsored by the Federation of American Societies for Experimental Biology.

In earlier experiments on adult rats, the researchers had found that estrogen, or having ovaries, somewhat countered THC's effects of slowing response time and increasing mistakes on tests of memory and learning.

In the latest tests, the researchers removed the ovaries from six female rats and then exposed them and six female rats with ovaries intact to THC during the rodent equivalent of adolescence. They trained the rats to perform sequential tasks to obtain rewards of food. When the rats became adults, they were again exposed to THC and given a learning test. For comparison, another group of 12 rats, half with ovaries removed, were given the same learning and memory skills training but were not exposed to THC as adolescents.

The rats exposed to THC during adolescence all performed more poorly on the tests than a similar group of female rats exposed to THC only as adults, regardless of whether they did or did not have ovaries.

More information

The Drug Policy Alliance Network has more about marijuana facts and myths.



-- Kevin McKeever



SOURCE: Federation of American Societies for Experimental Biology, news release, April 19, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. New study suggests Rx estrogen delivery through the skin may show safety benefits as opposed to oral delivery
2. Naturally produced estrogen may protect women from Parkinsons disease
3. Estrogen found to increase growth of the most common childhood brain tumor
4. Estrogen pills can benefit women with metastatic breast cancer
5. FDA Approves Durameds Synthetic Conjugated Estrogens-A Vaginal Cream
6. Estrogen therapy could be dangerous for women with existing heart risk
7. Estrogen May Explain Why Women With Cystic Fibrosis Suffer More
8. Estrogen and progesterone receptor isoforms expression in the stomach of Mongolian gerbils
9. Estrogen flooding our rivers, Université de Montréal study
10. Estrogen Cream No Match for Sun-Damaged Skin
11. Estrogen May Have Preventive Role in Womens Schizophrenia
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Estrogen May Combat Marijuana's Effect on Cognition
(Date:6/26/2016)... ... 2016 , ... Pixel Film Studios Released ProSlice Levels, a Media Slicing Effect ... videos a whole new perspective by using the title layers in ProSlice Levels ... , ProSlice Levels contains over 30 Different presets to choose from. FCPX ...
(Date:6/26/2016)... ... 26, 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping to ... app. The fitness app plans to fix the two major problems leading the fitness industry ... fits all type program , They don’t eliminate all the reasons people quit ...
(Date:6/25/2016)... ... June 25, 2016 , ... Experts from the American ... Annual Research Meeting June 26-28, 2016, at the Hynes Convention Center in Boston. ... including advance care planning, healthcare costs and patient and family engagement. , AIR ...
(Date:6/25/2016)... , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on ... Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ability ... fumigation is not a common occurrence, but a necessary one in the event that lice ...
(Date:6/25/2016)... ... 25, 2016 , ... First Choice Emergency Room , the largest network ... the Medical Director of its new Mesquite-Samuell Farm facility. , “We are pleased ... location,” said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... -- The Academy of Managed Care Pharmacy (AMCP) today ... allow biopharmaceutical companies to more easily share health care ... coverage decisions, a move that addresses the growing need ... The recommendations address restrictions in the sharing of product ... a prohibition that hinders decision makers from accessing HCEI ...
(Date:6/24/2016)... Mass. and SAN CLEMENTE, Calif. , ... California -based mobile pulmonary function testing company, is now able ... PFT devices developed by ndd Medical Technologies , Inc. ... testing done in hospital-based labs.  Thanks to ndd,s EasyOne PRO ® ... , can get any needed testing done in the comfort ...
(Date:6/24/2016)... , June 24, 2016 ... Market by Type (Standard Pen Needles, Safety Pen Needles), ... (Insulin, GLP-1, Growth Hormone), Mode of Purchase (Retail, Non-Retail) ... MarketsandMarkets, This report studies the market for the forecast ... to reach USD 2.81 Billion by 2021 from USD ...
Breaking Medicine Technology: