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Psychological impotence is where erection or penetration fails due to thoughts or feelings (psychological reasons) rather than physical impossibility; this is somewhat less frequent but often can be helped. Notably in psychological impotence, there is a strong response to placebo treatment. Erectile dysfunction, tied closely as it is about ideas of physical well being, can have severe psychological consequences. viagra online buy Medication (tablets taken by mouth) In 1998, the first tablet to treat ED was launched. This made a huge impact on the treatment of ED. There are now four different tablets licensed in the UK to treat ED: Three of the tablets work by increasing the blood flow to your penis. They do this by affecting cGMP, the chemical involved in dilating (widening) the blood vessels when you are sexually aroused (described above). They are sildenafil (trade name Viagra®), tadalafil (trade name Cialis®), and vardenafil (trade name Levitra®). You take a dose before you plan to have sex. Because of the way they work, these medicines are called phosphodiesterase type 5 (PDE5) inhibitors. buy viagra online site buy viagra
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In a study of mice, researchers "found a complex positive feedback loop in the penile nerves that triggers waves of nitric oxide to keep the penis erect," a release stated. After the initial release of nitric oxide, the nerve impulses that begin in the brain or from physical stimulation are sustained, thanks to a biochemical process called phosphorylation. This process ensures that nitric oxide continues to be released, maintaining the erections of both mice and men. Medication (tablets taken by mouth) In 1998, the first tablet to treat ED was launched. This made a huge impact on the treatment of ED. There are now four different tablets licensed in the UK to treat ED: Apomorphine (trade name Uprima®) works by increasing the level of certain chemicals in the brain which are involved in sending messages down nerves to the penis when you are sexually aroused. You take a tablet, which dissolves under the tongue, 20 minutes before you plan to have sex. viagra online buy Surgery to repair arteries (penile arterial reconstructive surgery) can reduce impotence caused by obstructions that block the flow of blood to the penis. The best candidates for such surgery are young men with discrete blockage of an artery because of a physical injury to the pubic area or a fracture of the pelvis. The procedure is less successful in older men with widespread blockage of arteries. Neurogenic disorders (spinal cord and brain injuries, nerve disorders such as Parkinson's disease, Alzheimer's disease, multiple sclerosis, and stroke) How does an erection normally occur? The neurotransmitters which are released in the penis cause another chemical to be made called cyclic guanosine monophosphate (cGMP). An increase of cGMP causes the arteries in the penis to dilate (widen). This allows extra blood to flood into the penis. The rapid inflow of blood causes the penis to swell into an erection. The swollen inner part of the penis also presses on the veins nearer to the skin surface of the penis. These veins normally drain the penis of blood. So, the flow of blood out of the penis is also restricted, which enhances the erection. viagra online buy subaction showcomments cialis start from online cialis online
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Vontobel Asset Management - Executive Director, Global Equity Analyst
Dr. Maria Custer is an equity analyst within the Global Equity Research Team. In her role, she is responsible for the coverage of the Global Health Care and Chemical sectors. Maria has over ten years research experience, focused on the Healthcare sector as well as four years experience working within the pharmaceutical industry.
Before joining Vontobel, Maria worked for Swiss Re, as an analyst within the Global Equities Portfolio Team. Prior to this from 2001 to 2007 Maria was Head of the Global Health Care Team and the Global Nanotechnology Team at Credit Suisse. Maria also has extensive experience working within the pharmaceutical industry having previously worked for Roche as a senior scientist leading a research laboratory within Roche's former Flavors and Fragrances division. Maria started her career at the Institute of Physiology of the University of Zurich as a scientific research assistant working in the field of nephrology.
Maria earned a PhD in Biochemistry and also holds a Master of Science in Biochemistry from the University of Zurich. She also holds a federal diploma for financial analyst and portfolio manager from the Swiss Training Center for Investment Professionals (SFAA).
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