HOME >> MEDICINE >> NEWS
Estrogen may dictate what problem-solving strategy brain uses

CHAMPAIGN, Ill. Deciding on hormone-replacement therapy weighing the far-reaching benefits and risks can give a woman a headache. Now researchers say estrogen may dictate what problem-solving strategies the brain uses to solve problems.

According to a study of rats published in the June issue of Behavioral Neuroscience, activation of different parts of the brain may depend on the presence or absence of estrogen. Rats treated with the hormone learned a place-oriented task faster than rats not getting it, but those not on estrogen were faster completing a response-driven task. These tasks are believed to be controlled by different neural or memory systems.

What we found is that given these analogous tasks that require different cognitive strategies, estrogen biased the rats to use a place, or spatial, strategy, said Donna L. Korol, a psychology professor at the University of Illinois at Urbana-Champaign. Those not given estrogen are better using a response, or non-spatial, strategy. This suggests that estrogen isnt just good for all kinds of memory. Rather, it is very specific in dictating what strategy one takes. Estrogen may enhance some and impair other forms of learning.

In the National Science Foundation-funded study, Korol and Lacy L. Kolo (St. Louis University School of Medicine) used young rats whose ovaries had been removed to decrease circulating estrogen levels. Three weeks later, some of them received injections of estrogen, while others got a placebo, before learning to find food in two similar four-arm mazes.

In the place-training test, food always was at the same place, but the required turn changed, depending on the rats starting point. Rats on estrogen learned the task faster than the untreated group. For the response-training test, the rats always found food by turning right (or left) at the first opportunity regardless of where they had started. Rats without estrogen learned this task quicker than the estrogen-tre
'"/>

Contact: Jim Barlow
b-james3@uiuc.edu
217-333-5802
University of Illinois at Urbana-Champaign
15-May-2002


Page: 1 2 3

Related medicine news :

1. Estrogen-associated COX-2 pathways explain protection from heart disease in female mice
2. Estrogen or stimulating environment boost memory
3. Estrogenlike drugs may eventually help postmenopausal women with weight gain
4. Estrogen offers no overall benefit for disease prevention in postmenopausal women with hysterectomy
5. Estrogen makes the brain more vulnerable to stress
6. Estrogen replacement increases risk factors for arrhythmia and sudden death
7. Estrogen may lower womens risk of heart disease by working as damper on inflammation
8. Testosterone may reduce risk of stroke in men; Estrogen levels not related to stroke
9. Estrogens role in preventing female cardiac disease
10. Estrogen has antitumor activity in hormone therapy-resistant breast tumors
11. Estrogen shows potential as stroke treatment, UF animal studies show

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... N.Y (PRWEB) , ... October 13, 2017 , ... Lori ... became a member of ElderCounsel, a national organization of elder law and special needs ... changing laws and rules. It also provides a forum to network with elder law ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Many families ... However, many long-term care insurance companies have a waiver for care if the client ... elimination period, when the family pays for care, is often waived, so the benefits ...
(Date:10/13/2017)... NY (PRWEB) , ... October 13, 2017 , ... Ellevate ... people in business to advocate for action towards gender equality at their inaugural Summit ... from around the globe, and reached a social audience of over 3 million. To ...
(Date:10/13/2017)... ... October 13, 2017 , ... Yisrayl Hawkins, Pastor and Overseer at ... of the most popular and least understood books in the Holy Scriptures, Revelation. The ... that have baffled scholars for centuries. Many have tossed it off as mere rubbish, ...
(Date:10/13/2017)... VA (PRWEB) , ... October 13, 2017 , ... ... of DevOps and Agile Software Development, has been awarded a contract by the ... Blanket Purchase Agreement (BPA) aims to accelerate the enterprise use of Agile methodologies ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)... -- NDS received FDA 510(k) clearance in May 2017 for its highly ... designed for endoscopy environments. An innovative secondary monitor solution, ZeroWire ... support the improvement of patient outcomes, procedural efficiency, and the lowering ... ... ...
(Date:10/5/2017)... Ill. , Oct. 5, 2017  In ... Association of Oral and Maxillofacial Surgeons (AAOMS) released ... opioids – to be used as a first-line ... pain. Recognizing ... the AAOMS White Paper "Opioid Prescribing: Acute and ...
(Date:10/4/2017)... , Oct. 4, 2017 ... single-use, self-contained, illuminating medical devices, today announced regulatory ... Health Surveillance Agency (or Agência Nacional de Vigilância ... first single-use, cordless surgical retractor with integrated LED ... optimal access, illumination and exposure of a tissue ...
Breaking Medicine Technology:
Cached News: