Can a woman use bone marrow to get pregnant
Stem cells have generated such an enormous amount of interest, in part, because of their applications related to areas such as fertility and genetics. In that same light, their interest for solving reproductive challenges has also generated a great deal of controversy. This is particularly true in the application of stem cells to facilitate reproduction for gay couples. At present, there are a number of research laboratories that are focused on the creation of cells that are genetically male but have been produced from eggs. Alternately, they are also trying to create sperm from female eggs.SEE VIDEO BY TOPIC: Bone Marrow Transplant - Mayo Clinic
Bone marrow may be the missing piece of the fertility puzzle
But recently a team of scientists announced they had made artificial sperm from human bone marrow , and media reports abounded with the dire news that my goodfellas and by extension, me had been rendered unnecessary.
There are at least half a dozen reasons why such speculation is silly, some scientific and some practical. For example, as long as sex feels good and remains no more expensive than dinner and a bottle of wine, most people will use natural-grown sperm. Still, suggests Gregory Stock, director of the program on medicine, society and technology at the UCLA School of Medicine and the CEO of a biotech company called Signum Biosciences, it is very interesting that there were any stories at all.
Experiments have created eggs and sperm, so-called artificial gametes, from embryonic stem cells and other cell types for years now with limited success, so the bone marrow work does not represent a giant leap. And the stories are reminiscent of some that were printed 10 years ago when the birth of Dolly the sheep, the first mammal cloned from an adult cell, was announced. We men were declared washed up then, too.
Well, what does that say about marriage laws? About whether men are needed? There are all sorts of ways that play into our psyche, who and what we are, what relationships are all about, the limits of the technological vision of ourselves.
I just want to know why you women are in such a rush to get rid of us. A world without our sperm So permit me to run with the tabloid visionaries and see where men wind up in a world that does not need our sperm because you ladies are out there making them on your own.
Video: Conceivable? Rates of women who are opting for preventive mastectomies, such as Angeline Jolie, have increased by an estimated 50 percent in recent years, experts say.
But many doctors are puzzled because the operation doesn't carry a percent guarantee, it's major surgery -- and women have other options, from a once-a-day pill to careful monitoring. In the near term, men may not be much different than the present. Well, strictly in terms of keeping the human species alive, you women need some of us. We make a glut of sperm, millions of them, so one man can spread a lot of seed. Sperm banking has long been an important part of in vitro fertilization, just as bull semen is integral to dairy production.
Frankly, you only need a small tribe of us guys equipped with porn magazines and plastic cups. You could feed us, groom us and give us a little exercise — pretty much like you do now.
Baby-making by the numbers: Stats on women in the workplace, the rate of assisted reproduction, numbers of twins and triplets, and much more. Once a worldwide network of stem cell banks is established already starting, by the way , the raw material represented by the cells could be used to make any kind of cell in the body, including sperm. Catalogs could be produced the way listings of sperm donors are created now, outlining features and benefits.
Women could make a toll-free call. Stag colonies of men eating Doritos? Being a man, I will assume that most women would prefer to give birth to female babies, girls being far more competent, intelligent and with less propensity to crash motorcycles. Two hundred years from now, a few isolated stag colonies are inhabited by men who have mutated to survive solely on Doritos.
Other future technologies like synthetically created genomes, artificial chromosomes and manufactured cells also may be used as part of reproductive services. And if any of this ever comes to pass, we are going to have to make conceptual adjustments because such developments will further change an already changing outlook on culture and on what it means to reproduce.
This is a real question for women, too. Roger Gosden, an IVF pioneer, favors the research. Show discussion. Will science render men unnecessary? The possibility seems real but don't drop your guy just yet Below: x Jump to discuss comments below discuss x Next story in BabyQuest Baby-making at a crossroads related. Discuss: Discussion comments.
Expand Collapse. View all comments. Leave your comment. Most active discussions votes comments. Top health stories. Search Most popular on msnbc. Popular stories currently unavailable Top videos Popular videos currently unavailable.
Bone stem cells turned into primitive sperm cells
Follow Slashdot blog updates by subscribing to our blog RSS feed. I guess after being told to "Go Fuck Yourself" for so many years, these scientists finally found a way to do it. There will be some interesting debates raging about this one for a long time. I'm of the opinion that on the whole, we are better off with the process of gene mixing than practicing self-eugenics.
Since the late s, scientists have explored how to produce sperm where all of the chromosomes come from a female donor. Creating female sperm was first raised as a possibility in a patent filed in  by injecting a woman's cells into a man's testicles, though the patent focused mostly on injecting altered male cells into a man's testes to correct genetic diseases. In , Japanese scientists partially confirmed such techniques by creating chicken female sperm in a similar manner. It is therefore concluded that most of the W-bearing PGC could not differentiate into spermatozoa because of restricted spermatogenesis. One potential roadblock to injecting a woman's cells into a man's testicles is that the man's immune system might attack and destroy the woman's cells.
Slashdot Top Deals
The study shows that when an egg is fertilized, stem cells leave the bone marrow and travel via the bloodstream to the uterus, where they help transform the uterine lining for implantation. If the lining fails to go through this essential transformation, the embryo cannot implant, and the body terminates the pregnancy. But knowing that bone marrow has a significant role is a paradigm shift. In this study, the researchers were able to prove the physiological relevance of stem cells to pregnancy. Reshef Tal , first author of the study and assistant professor of obstetrics, gynecology and reproductive sciences at Yale. In two mouse models with the Hoxa11 gene defect, which presents in mice as a defective endometrium, the researchers found that a bone marrow transplant from a healthy donor could improve fertility by promoting sufficient decidualization of the endometrium. In mice with only one copy of the defective gene, the transplant saved pregnancies that would otherwise have been lost and increased litter sizes, while in the mice with two bad copies of the gene, which were thus entirely infertile, the transplant caused growth and repair of the defective endometria. This study was made possible by a methods breakthrough that Tal and Taylor made a few years ago.
Cells that make bone marrow also travel to the womb to help pregnancy
But recently a team of scientists announced they had made artificial sperm from human bone marrow , and media reports abounded with the dire news that my goodfellas and by extension, me had been rendered unnecessary. There are at least half a dozen reasons why such speculation is silly, some scientific and some practical. For example, as long as sex feels good and remains no more expensive than dinner and a bottle of wine, most people will use natural-grown sperm. Still, suggests Gregory Stock, director of the program on medicine, society and technology at the UCLA School of Medicine and the CEO of a biotech company called Signum Biosciences, it is very interesting that there were any stories at all. Experiments have created eggs and sperm, so-called artificial gametes, from embryonic stem cells and other cell types for years now with limited success, so the bone marrow work does not represent a giant leap.
By Roxanne Khamsi. In a first step towards creating artificial sperm cells, researchers have turned human bone marrow tissue into primitive sperm cells. If these precursor cells can be coaxed into becoming fully functioning sperm cells, the technique could allow infertile men to father their own children, and even allow women to produce their own sperm.
Stem Cells and Same Sex Reproduction
Bone marrow-derived cells play a role in changes to the mouse uterus before and during pregnancy, enabling implantation of the embryo and reducing pregnancy loss, according to research published September 12 in the open-access journal PLOS Biology. Although the study was done in mice, it raises the possibility that dysfunction of bone marrow-derived progenitor cells may contribute to implantation failure and pregnancy loss in women. Bone marrow progenitors can become either blood or tissue cells. Within the uterus they differentiate into endometrial tissue cells in the lining of the womb, but until now it was not known if they have a function in pregnancy.SEE VIDEO BY TOPIC: Parent's conceive baby for bone marrow transplant for sick sibling - 60 Minutes Australia
Я тебе очень благодарен. - Не стоит благодарности. - Она улыбнулась и села напротив шефа. Стратмор был крупным кряжистым мужчиной, чье невыразительное лицо скрывало присущие ему решительность, настойчивость и неизменное стремление к совершенству. Серые глаза светились уверенностью, с которой сочеталась профессиональная скрытность, но сегодня в них проглядывали беспокойство и нерешительность. - У вас испуганный вид, - сказала Сьюзан.
Внезапно откуда-то появился пожилой человек, подбежал к Танкадо и опустился возле него на колени. Халохот замедлил шаги. Мгновение спустя появились еще двое - тучный мужчина и рыжеволосая женщина. Они также подошли к Танкадо. - Неудачный выбор места, - прокомментировал Смит. - Халохот думал, что поблизости никого. Халохот какое-то время наблюдал за происходящим, потом скрылся за деревьями, по-видимому, выжидая.
Приходи поиграть. - На улице еще темно, - засмеялся. - А-ах, - сладко потянулась. - Тем более приходи.
Беккер в отчаянии плюхнулся на скамейку и задумался о том, что делать. Что же предпринять. ГЛАВА 25 Городская больница закрылась для посетителей.
Стратмор был блестящим специалистом, возможно, лучшим в агентстве. И в то же время после провала с Попрыгунчиком Стратмор испытывал колоссальный стресс. Это беспокоило Фонтейна: к коммандеру сходится множество нитей в агентстве, а директору нужно оберегать свое ведомство.
Отключение ТРАНСТЕКСТА было логичным шагом в случае возникновения чрезвычайной ситуации, а ведь тот был уверен, что в машину проник вирус. К несчастью, это был самый надежный способ собрать в шифровалке всех сотрудников Отдела обеспечения системной безопасности. После таких экстренных действий на главном коммутаторе раздавался сигнал общей тревоги. Проверку шифровалки службой безопасности Хейл допустить не. Он выбежал из помещения Третьего узла и направился к люку.
Звонки в агентства услуг сопровождения ничего не дали. Коммандер, недовольный необходимостью говорить по линии, не защищенной от прослушивания, попросил Дэвида не звонить, пока кольцо не окажется в его руках. Он решил было обратиться в полицию - может быть, у них есть данные о рыжеволосых проститутках, - но Стратмор на этот счет выразился недвусмысленно: Вы должны оставаться невидимым. Никто не должен знать о существовании кольца. Может быть, стоит побродить по Триане, кварталу развлечений, и поискать там эту рыжую девицу. Или же обойти все рестораны - вдруг этот тучный немец окажется .
Извините, сэр… Бринкерхофф уже шел к двери, но Мидж точно прилипла к месту. - Я с вами попрощался, мисс Милкен, - холодно сказал Фонтейн. - Я вас ни в чем не виню. - Но, сэр… - заикаясь выдавила .