Navigation Links
The brain is broadly wired for reproduction

eived the signals were unknown. Even more importantly for us, though certain brain areas had been implicated in pheromone signaling, specific neurons that transmit pheromone signals to GnRH neurons had not been identified."

To map the neural circuits involving GnRH neurons, the researchers used a genetic tracing method that they previously developed for charting neural pathways. They first engineered mice in which GnRH neurons produce barley lectin (BL), a tracer molecule that travels upstream and downstream to connected neurons, and green fluorescent protein (GFP), to mark the producing cells. By visualizing the locations of BL, GFP, and GnRH neurons and their axons, the researchers were able to identify neurons directly connected to GnRH neurons. They also determined which neurons sent signals to GnRH neurons and which neurons received signals from GnRH neurons.

These studies revealed that connections go in both directions between GnRH neurons and relay stations in the brain that process signals from both the olfactory and vomeronasal systems, said Buck.

In mice and other mammals, the olfactory and vomeronasal systems are distinct pathways for sensing chemicals in the environment. While the main olfactory system that begins in the nose processes odors, the vomeronasal (accessory) system receives signals -- triggered by pheromones -- from the vomeronasal organ (VNO) in the nasal septum. However, the systems are not entirely parallel. Buck and her colleagues have shown that the VNO can detect some odorants. And conversely, there is evidence that some pheromone signals require input from the nose in addition to the VNO.

"Our findings suggest that both odor and pheromone relay areas in the brain are sending pheromone signals to GnRH neurons. Moreover, GnRH neurons, in turn, are sending information back to those relay areas," said Buck. "This surprising finding suggests that the GnRH neurons are influencing the processing of odor and ph
'"/>

Source:Howard Hughes Medical Institute


Page: 1 2 3 4 5

Related biology news :

1. Controversial drug shown to act on brain protein to cut alcohol use
2. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
3. Mouse brain tumors mimic those in human genetic disorder
4. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
5. First atlas of key brain genes could speed research on cancer, neurological diseases
6. NYU study reveals how brains immune system fights viral encephalitis
7. Stem cells from brain transformed to produce insulin at Stanford
8. Birds brains reveal source of songs
9. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
10. Revolutionary nanotechnology illuminates brain cells at work
11. A puzzle piece found in unraveling the wiring of the brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The brain broadly wired for reproduction

(Date:9/18/2014)... millions of Americans to undertake jaunts into the countryside each ... longer within a century, according to new research. , Climate ... the United States as summer temperatures linger later into the ... Ecology and Biogeography . For instance, the paper birch ... New Hampshire could change color one to three weeks ...
(Date:9/18/2014)... the first smartphone app that automatically reveals students, ... other words, your smartphone knows your state of ... how that affects you. , The StudentLife app, ... to their academic performance, also may be used ... monitor mental health, trigger intervention and improve productivity ...
(Date:9/18/2014)... be cheerful, happy-go-lucky characters, so you might expect that ... , In fact some dogs are distinctly more pessimistic ... , "This research is exciting because it measures ... non-invasively. It offers researchers and dog owners an insight ... said Dr Melissa Starling, from the Faculty of Veterinary ...
Breaking Biology News(10 mins):Fall foliage season may be later, but longer on warmer Earth 2Fall foliage season may be later, but longer on warmer Earth 3Fall foliage season may be later, but longer on warmer Earth 4New Dartmouth smartphone app reveals users' mental health, performance, behavior 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 4Dogs can be pessimists too 2Dogs can be pessimists too 3
... understudies. Now, an increasingly popular radioactive isotope has ... at the National Institute of Standards and Technology ... speed up clinical trials of many drugs and ... The number of medical images obtained through ...
... come in boy and girl varieties, but they do have ... Medical Center shows that some of the earliest evolved forms ... higher animals, including that distant cousin of fungus, the human. ... sex-determining genes from one of the oldest known types of ...
... ingestion of soil, or geophagy, has important health ... her colleagues from the Musum National dHistoire Naturelle ... dysfunctional behavior, geophagy has evolved as a practice ... particular study (1), to be published online this ...
Cached Biology News:Radioactive 'understudy' may aid medical imaging, drug development 2Evolution of the sexes: What a fungus can tell us 2Down to earth remedies for chimps 2
(Date:9/19/2014)... (PRWEB) September 19, 2014 ... its potential to revolutionize the world has attracted ... corporations and small start-ups. The early years of ... projects largely due to the high risks involved, ... budgets earmarked for this evolving technology have been ...
(Date:9/19/2014)... , Sept. 19, 2014 Pfenex Inc. (NYSE ... development of high-value and difficult to manufacture proteins including ... at the 21 st Annual NewsMakers in the ... . Bertrand Liang , chief executive officer of ... programs and business strategy on Friday, September 26, 2014 ...
(Date:9/19/2014)... Dublin ... announced the addition of the  "Micro Market Monitor ... offering.       (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , , ... fastest-growing segments in the chromatography market. The market ... expected to reach $2.0 billion by 2019, at ...
(Date:9/18/2014)... TX (PRWEB) September 18, 2014 ... integrated urological and interventional radiology products and services, ... known as cryotherapy and cryoablation) versus external beam ... Section of the American Urological Association (MAAUA) Annual ... , "Comparing Relative Effectiveness of Cryosurgery and External ...
Breaking Biology Technology:Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 2Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 3Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 4Pfenex to Present at Upcoming Industry Conference on September 26 2Micro Market Monitor : Global Pre-packed Chromatography Columns 2HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2
... , , , ... (Nasdaq: GHDX ) today reported financial results and business progress for ... increased to $36.6 million in the second quarter of 2009 compared with $27.8 ... type DX(R) breast cancer test was $35.2 million in the second quarter ...
... 4 Oramed,Pharmaceuticals Inc. (OTCBB: ORMP.OB) ( http://www.oramed.com ... its wholly owned Israeli,subsidiary, Oramed Ltd., was awarded a ... 3.1 million ($828,000), from the Office of the Chief,Scientist ... of Israel. This,grant was awarded as government participation in ...
... , VENLO, The Netherlands, Aug. 4 QIAGEN N.V. (Nasdaq: ... call. The Webcast will take place at 9:30 a.m. EDT on Tuesday, August 11, ... Roland Sackers, Chief Financial Officer. , , ... When: 9:30 a.m. EDT on August 11, ...
Cached Biology Technology:Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 2Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 3Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 4Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 5Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 6Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 7Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 8Genomic Health Announces Second Quarter 2009 Financial Results and Business Progress 9Oramed Pharmaceuticals was Awarded a NIS 3.1 Million Grant From the Israeli Office of the Chief Scientist 2Webcast of QIAGEN N.V.'s (Nasdaq: QGEN) Second Quarter 2009 Financial Results Call Set for August 11 2
... microplate stacker system, offers fast and reliable ... devices:, , Ultra Evolution , SAFIRE monochromator ... SpectraFluor Plus , LS Series of Laser ... a wide range of detection and separation ...
... your life easier. It offers a wide array of ... balance. *Instruments supported: ... XS, XP, PR, SR, PG-S, PG, SG, AT, MT, ... User guidance on the balance ...
... The STag Purification Kits enable rapid ... STag fusion proteins produced from appropriate vectors. ... up to 1 mg target protein under ... incubated with S-protein Agarose, which specifically retains ...
Request Info...
Biology Products: