Adult Stem Cell Therapy For Erectile Dysfunction

A new experiment on stem cell research shows great promise for the technology on stem cell as a cure for erectile dysfunction on older men. According to a study being conducted by several researchers from the American Urological Association, headed by Dr. Tom Lue, it is possible for a autologous adipose derived stem cells (ADSCs) to be used to regenerate erectile function.

In adipose tissue there are stem cells as demonstrated by immunohistochemistry, RT-PCR and Western blotting experiments. The adipose derived stem cells (ADSCs) reside near small blood vessels. CD34 staining identifies 60% of peri-vascular areas as harboring ADSCs. It occurs in new blood vessels, and is a sign of regeneration. ADSCs can be harvested by liposuction or fat excision. Adipose cells are digested and ADSCs are cultured for further induction, labeling or gene transfection. ADSCs can also be used for in vivo tissue engineering. In vitro induction can result in hepatocytes, beta cells to produce insulin or endothelial cells. In vivo, ADSCs placed in muscle can differentiate into skeletal muscle, placed near blood vessels become smooth muscle and in fat can become fat cells. The differentiate into component cell types and integrate into the tissue. Four weeks after injection of ADSCs following cavernous nerve crush injury in a rat model, there is return of function.

A study showed injection of umbilical cord blood stem cells into men having failed PDE5 inhibitors resulted in improved erectile function. This is only a pilot experiment, but shows great promise.

These results were presented by Dr. Lue at the Annual Meeting of the American Urological Association held at Orlando, Florida las May 2008.

Female Hormone To Prevent HIV in Men

A study published in PLoS ONE (plosone.org), an open-access, online scientific journal from the Public Library fo Science, suggests that the female hormone estrogen when applied to the penis boosts a defensive protein that acts as a "living condom" and could reduce a man's risk of contracting HIV.

This is after a group of researchers from the University of Melbourne in Australia did an experiment where they applied the oestrogen cream oestriol, a substance used to treat prolapse in women, to the inner foreskin of the penis and found out that this increased the protein keratin in the skin by four-fold acting like a barrier against HIV. They described this keratin as a "natural condom" or a "biological membrane which HIV can't get through."

By using the keratin, the researchers is hoping that they can increase the body's natural defense against the virus so it can't physically inject itself to the body.

Though the treatment has worked in the laboratory, further tests are still needed, one of which will be a clinical trial in Africa.

Although the treatment did not protect against other sexually transmitted infections, it could be a simple, inexpensive and effective guard against HIV that could be applied once weekly or eventually have applications in condoms and lubricants. And if the trials become successful, treatment could significantly reduce HIV/AIDS caseloads over time.

Your Sex Questions, Answered!

You've heard them millions of time. You yourself asked it more times than that. But just like the pot of gold at the end of the rainbow, the answers to our sex quandaries have eluded us many times more than we can count. Maybe it's because of its taboo nature or we are just too embarrass to really make a serious conversation about it but let's all admit it, we want answers that can satisfy us when we ask questions about our sexuality and sex lives.

Is my penis the right size? How long should I last to satisfy my lover? Where exactly is her G-spot? Get ready to be blown away because we have the answers for you.

Penis Talk

Men have always been insecure when it comes to their penis size. I know for a fact that every guy out there experienced discomfort whenever they get inside the locker room to take a shower and change their clothes in front of other guys. There's always the anxiety about being laughed on and teased by the others because your peepee might not measure up to them. Masculinity and male power has always been equated to the size of the penis and it will stay like that for more years to come. And the idea that "the bigger, the better," which is a complete myth by the way according to many studies in past, just adds to the pressure on the male population. So finally, what really is the average size of a guy's penis?

Cold hard fact: the average penis size is between five and six inches, when ERECT! On the flaccid state, it should be around three and a half inches.

Spotting the G-spot

For a very long time, the existence of the G-spot on the female anatomy has been debated and the idea of the vaginal orgasm widely criticized. The G-spot, named after German doctor Ernst Grafenberg who first wrote about this female part, is the erogenous zone in the anterior vaginal wall that triggers the much elusive vaginal orgasm on women. Vaginal orgasms are said to be elusive because they are considered as the more powerful climax for women as compared to clitoral orgasms because it involved penile penetration. And as according to psychologist Sigmund Freud, "if a woman couldn't be satisfied by penetrative sex, something must be wrong with her." So to prove that women are not abnormal just because they can't have orgasms through penetration, we asked where really is the G-spot located?

Cold hard fact: Though there are still no scientific basis for the existence of the G-spot, it is believed to be located inside the front wall of the vagina. It is really not a spot, but more of a zone that is only two-and-a-half to five centimeters in size. If you wanna explore it and try whether it really can induce sexual arousal, feel it inside the vagina. It is a bit of a rough area in there, a bit like a walnut, and is not smooth and silky like the rest of the vaginal wall.

Blowing Off Early

Premature ejaculation is the most common form of sexual dysfunction on men, affecting 20 to 30 per cent of the male population. That is why this concept has been a frequent topic involved in most sex myths. The question of how long can a guy last and how long should he last to satisfy her partner have been thrown more times than a baseball in a baseball game. The fact that the definition of the term itself is a bit blurry adds to the confusion on this topic. There are men who ejaculates within a minute but says that they don't have premature ejaculation problems. Some can last up to 20 minutes but still think they do have problems. So what really right time to be not considered a to not having premature ejaculation?

Cold hard fact: if you want to hear a number, the average time of penetration time for men is around 5.4 minutes. But there is really no exact number that can say how much time does a man need to be able to satisfy his partner. Sex therapist advice men though to be less anxious when having sex to be able to make sure that he is doing it right for his partner. Many techniques have been offered to men so they can manage their anxiety and prolong their time of ejaculation. And contrary to popular belief, distraction or decreasing stimulation won't help either. The way to be able to last longer is by getting used to intense stimulation and just being able to enjoy it.

So there you go, answers to some of your sex questions. I just hope you learn something from this.