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A measurement of luteinizing hormone (LH) and, in some instances, prolactin, may be helpful. A serum prolactin level is obtained if the patient has evidence of pituitary hyperfunction, a common endocrine cause of erectile dysfunction (ED), and in documented cases of low serum testosterone levels. LH levels vary according to the body's need for testosterone. The hypothalamus regulates testosterone levels by releasing or inhibiting LH-releasing hormone, which acts in the pituitary to produce LH. A high LH level associated with a low testosterone level implies primary testicular (Leydig cell) failure. Conversely, a low LH level associated with a low testosterone level suggests a central defect.
Venous leak: If the veins in the penis cannot prevent blood from leaving the penis during an erection, an erection cannot be maintained. This is known as a venous leak, and can be a result of injury or disease.
FRIDAY, Sept. 25 (HealthDay News) -- Scientists may have discovered a novel way to treat erectile dysfunction -- using the venom of a deadly spider.
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Tests such as the bulbocavernosus reflex test are used to determine if there is sufficient nerve sensation in the penis. The physician squeezes the glans (head) of the penis, which immediately causes the anus to contract if nerve function is normal. A physician measures the latency between squeeze and contraction by observing the anal sphincter or by feeling it with a gloved finger inserted past the anus. Specific nerve tests are used in patients with suspected nerve damage as a result of diabetes or nerve disease.
The pain-free therapy boosts performance by stimulating the growth of new blood vessels in the genital area.
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The nice news is that these medicine work nearly instantly, but the dangerous information is that they, as almost all artificial erectile dysfunction medication have side effects that vary from mild to really severe.
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Cutting back on any drugs with harmful side effects is considered next. For example, drugs for high blood pressure work in different ways. If you think a particular drug is causing problems with erection, tell your doctor and ask whether you can try a different class of blood pressure medicine.
A Randomized Controlled Trial
The results may surprise you. Here are a few of the highlights.
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Main outcome measures: Erectile dysfunction was identified in men who reported having had trouble keeping an erection when they wanted to, a problem which persisted for at least one month over the previous year. Variables examined in multivariate logistic regression analyses included age, education, presence of cardiovascular disease and diabetes, and current alcohol and tobacco consumption.
PDE5 inhibition restores T cell proliferation in MM and head and neck cancer patients
Almost immediately after the discovery of cAMP by Sutherland and colleagues, cyclic nucleotide PDE activity was described (Butcher and Sutherland, 1962). With the subsequent discovery of cGMP, it was found that both cAMP and cGMP could be hydrolyzed by the same type of activity, i.e., hydrolysis of the 3? cyclic phosphate bond. On the basis of substrate competition studies, it was clear that at least some of these activities must have the same catalytic site. In fact, many of the early studies on cyclic nucleotides were directed toward understanding PDE activity since at that time it was much easier to measure PDE activity than either cAMP or cGMP themselves or the enzymes that catalyzed their synthesis. With the advent of assays using radioactive substrate, it became clear that there were likely to be multiple forms of PDEs with different kinetic and regulatory properties (Thompson et al., 1979; Beavo et al., 1982). However, it was not until higher resolution fractionation techniques, monoclonal antibodies, and molecular cloning and sequencing procedures were applied to the PDEs that the truly large number of different gene products was fully appreciated.
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The most important component of diagnosing erectile dysfunction is obtaining a complete medical and sexual history. It is important to distinguish the condition from other sexual dysfunctions, such as premature ejaculation and loss of libido. Several formalized sexual questionnaires, such as the IIEF (Internation Index of Erectile Function) and EDITS (Erectile Dysfunction Inventory of Treatment Satisfaction), allow one to detect the presence and grade the severity of erectile dysfunction. The complete IIEF is composed of 15 questions; an abridged 5-item version, called the sexual health inventory for men (SHIM), has been developed and validated.29 Allowing a patient to complete such a questionnaire before his first clinical encounter may produce a more comfortable clinical environment.30 The duration of the problem, time of onset and degree of patient and partner concern should also be elucidated. The circumstances surrounding erectile dysfunction may be helpful in determining whether a situational or nonorganic factor is involved. Sudden onset, maintenance of nocturnal erections, presence of psychological problems and concurrent major life events or relationship issues may be associated with nonorganic erectile dysfunction.31 Concurrent medical illnesses and any medications the patient may be taking should be reviewed. Erectile dysfunction is often a component of generalized medical illness and may represent the initial presentation of cardiovascular disease or diabetes. The history may also reveal certain reversible or modifiable risk factors, such as tobacco use or inadequate diabetes control.
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Depression affects the way one feels about oneself and the way one thinks about life. People who are depressed cannot simply "pull themselves together" and get better. Without treatment, symptoms of depression can last indefinitely. Appropriate treatment, however, can help most people who suffer from depression get back on track.
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